diff -urN linux-2.5.8-pre3/Documentation/mmio_barrier.txt lia64-2.5.8-pre3/Documentation/mmio_barrier.txt
--- linux-2.5.8-pre3/Documentation/mmio_barrier.txt Wed Dec 31 16:00:00 1969
+++ lia64-2.5.8-pre3/Documentation/mmio_barrier.txt Thu Apr 11 16:29:00 2002
@@ -0,0 +1,15 @@
+On some platforms, so-called memory-mapped I/O is weakly ordered. For
+example, the following might occur:
+
+CPU A writes 0x1 to Device #1
+CPU B writes 0x2 to Device #1
+Device #1 sees 0x2
+Device #1 sees 0x1
+
+On such platforms, driver writers are responsible for ensuring that I/O
+writes to memory-mapped addresses on their device arrive in the order
+intended. The mmiob() macro is provided for this purpose. A typical use
+of this macro might be immediately prior to the exit of a critical
+section of code proteced by spinlocks. This would ensure that subsequent
+writes to I/O space arrived only after all prior writes (much like a
+typical memory barrier op, mb(), only with respect to I/O).
diff -urN linux-2.5.8-pre3/Makefile lia64-2.5.8-pre3/Makefile
--- linux-2.5.8-pre3/Makefile Thu Apr 11 15:26:09 2002
+++ lia64-2.5.8-pre3/Makefile Thu Apr 11 16:28:19 2002
@@ -88,7 +88,7 @@
CPPFLAGS := -D__KERNEL__ -I$(HPATH)
-CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes -Wno-trigraphs -O2 \
+CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes -Wno-trigraphs -g -O2 \
-fomit-frame-pointer -fno-strict-aliasing -fno-common
AFLAGS := -D__ASSEMBLY__ $(CPPFLAGS)
diff -urN linux-2.5.8-pre3/arch/i386/mm/fault.c lia64-2.5.8-pre3/arch/i386/mm/fault.c
--- linux-2.5.8-pre3/arch/i386/mm/fault.c Thu Apr 11 15:25:49 2002
+++ lia64-2.5.8-pre3/arch/i386/mm/fault.c Thu Apr 11 16:28:09 2002
@@ -27,8 +27,6 @@
extern void die(const char *,struct pt_regs *,long);
-extern int console_loglevel;
-
/*
* Ugly, ugly, but the goto's result in better assembly..
*/
diff -urN linux-2.5.8-pre3/arch/ia64/Config.help lia64-2.5.8-pre3/arch/ia64/Config.help
--- linux-2.5.8-pre3/arch/ia64/Config.help Thu Apr 11 15:26:40 2002
+++ lia64-2.5.8-pre3/arch/ia64/Config.help Thu Apr 11 16:28:42 2002
@@ -414,12 +414,18 @@
HP-simulator For the HP simulator
().
+ HP-zx1 For HP zx1 platforms.
SN1-simulator For the SGI SN1 simulator.
DIG-compliant For DIG ("Developer's Interface Guide") compliant
- system.
+ systems.
If you don't know what to do, choose "generic".
+CONFIG_IA64_HP_ZX1
+ Build a kernel that runs on HP zx1-based systems. This adds support
+ for the zx1 IOMMU and makes root bus bridges appear in PCI config space
+ (required for zx1 agpgart support).
+
CONFIG_IA64_PAGE_SIZE_4KB
This lets you select the page size of the kernel. For best IA-64
performance, a page size of 8KB or 16KB is recommended. For best
@@ -439,6 +445,32 @@
Select this option to build a kernel for an Itanium prototype system
with a B-step CPU. You have a B-step CPU if the "revision" field in
/proc/cpuinfo has a value in the range from 1 to 4.
+
+CONFIG_IA64_SGI_AUTOTEST
+ Build a kernel used for hardware validation. If you include the
+ keyword "autotest" on the boot command line, the kernel does NOT boot.
+ Instead, it starts all cpus and runs cache coherency tests instead.
+
+ If unsure, say N.
+
+CONFIG_IA64_SGI_SN_DEBUG
+ Turns on extra debugging code in the SGI SN (Scalable NUMA) platform
+ for IA64. Unless you are debugging problems on an SGI SN IA64 box,
+ say N.
+
+CONFIG_IA64_SGI_SN_SIM
+ If you are compiling a kernel that will run under SGI's IA64
+ simulator (Medusa) then say Y, otherwise say N.
+
+CONFIG_SERIAL_SGI_L1_PROTOCOL
+ Uses protocol mode instead of raw mode for the level 1 console on the
+ SGI SN (Scalable NUMA) platform for IA64. If you are compiling for
+ an SGI SN box then Y is the recommended value, otherwise say N.
+
+CONFIG_PCIBA
+ IRIX PCIBA-inspired user mode PCI interface for the SGI SN (Scalable
+ NUMA) platform for IA64. Unless you are compiling a kernel for an
+ SGI SN IA64 box, say N.
CONFIG_IA64_MCA
Say Y here to enable machine check support for IA-64. If you're
diff -urN linux-2.5.8-pre3/arch/ia64/Makefile lia64-2.5.8-pre3/arch/ia64/Makefile
--- linux-2.5.8-pre3/arch/ia64/Makefile Thu Apr 11 15:25:55 2002
+++ lia64-2.5.8-pre3/arch/ia64/Makefile Thu Apr 11 16:28:11 2002
@@ -22,7 +22,7 @@
# -ffunction-sections
CFLAGS_KERNEL := -mconstant-gp
-GCC_VERSION=$(shell $(CROSS_COMPILE)$(HOSTCC) -v 2>&1 | fgrep 'gcc version' | cut -f3 -d' ' | cut -f1 -d'.')
+GCC_VERSION=$(shell $(CC) -v 2>&1 | fgrep 'gcc version' | cut -f3 -d' ' | cut -f1 -d'.')
ifneq ($(GCC_VERSION),2)
CFLAGS += -frename-registers --param max-inline-insns=2000
@@ -33,16 +33,11 @@
endif
ifdef CONFIG_IA64_GENERIC
- CORE_FILES := arch/$(ARCH)/hp/hp.a \
- arch/$(ARCH)/sn/sn.o \
- arch/$(ARCH)/dig/dig.a \
- arch/$(ARCH)/sn/io/sgiio.o \
+ CORE_FILES := arch/$(ARCH)/hp/hp.o \
+ arch/$(ARCH)/dig/dig.a \
$(CORE_FILES)
SUBDIRS := arch/$(ARCH)/hp \
- arch/$(ARCH)/sn/sn1 \
- arch/$(ARCH)/sn \
arch/$(ARCH)/dig \
- arch/$(ARCH)/sn/io \
$(SUBDIRS)
else # !GENERIC
@@ -50,7 +45,16 @@
ifdef CONFIG_IA64_HP_SIM
SUBDIRS := arch/$(ARCH)/hp \
$(SUBDIRS)
- CORE_FILES := arch/$(ARCH)/hp/hp.a \
+ CORE_FILES := arch/$(ARCH)/hp/hp.o \
+ $(CORE_FILES)
+endif
+
+ifdef CONFIG_IA64_HP_ZX1
+ SUBDIRS := arch/$(ARCH)/hp \
+ arch/$(ARCH)/dig \
+ $(SUBDIRS)
+ CORE_FILES := arch/$(ARCH)/hp/hp.o \
+ arch/$(ARCH)/dig/dig.a \
$(CORE_FILES)
endif
diff -urN linux-2.5.8-pre3/arch/ia64/config.in lia64-2.5.8-pre3/arch/ia64/config.in
--- linux-2.5.8-pre3/arch/ia64/config.in Thu Apr 11 15:27:21 2002
+++ lia64-2.5.8-pre3/arch/ia64/config.in Thu Apr 11 16:29:16 2002
@@ -22,6 +22,7 @@
"generic CONFIG_IA64_GENERIC \
DIG-compliant CONFIG_IA64_DIG \
HP-simulator CONFIG_IA64_HP_SIM \
+ HP-zx1 CONFIG_IA64_HP_ZX1 \
SGI-SN1 CONFIG_IA64_SGI_SN1 \
SGI-SN2 CONFIG_IA64_SGI_SN2" generic
@@ -56,7 +57,7 @@
fi
fi
-if [ "$CONFIG_IA64_DIG" = "y" ]; then
+if [ "$CONFIG_IA64_GENERIC" = "y" ] || [ "$CONFIG_IA64_DIG" = "y" ] || [ "$CONFIG_IA64_HP_ZX1" = "y" ]; then
bool ' Enable IA-64 Machine Check Abort' CONFIG_IA64_MCA
define_bool CONFIG_PM y
fi
diff -urN linux-2.5.8-pre3/arch/ia64/defconfig lia64-2.5.8-pre3/arch/ia64/defconfig
--- linux-2.5.8-pre3/arch/ia64/defconfig Thu Apr 11 15:26:08 2002
+++ lia64-2.5.8-pre3/arch/ia64/defconfig Thu Apr 11 16:28:18 2002
@@ -23,7 +23,7 @@
# CONFIG_KMOD is not set
#
-# General setup
+# Processor type and features
#
CONFIG_IA64=y
# CONFIG_ISA is not set
@@ -32,21 +32,22 @@
# CONFIG_SBUS is not set
CONFIG_RWSEM_GENERIC_SPINLOCK=y
# CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
-CONFIG_ACPI=y
-CONFIG_ACPI_EFI=y
-CONFIG_ACPI_INTERPRETER=y
-CONFIG_ACPI_KERNEL_CONFIG=y
CONFIG_ITANIUM=y
# CONFIG_MCKINLEY is not set
# CONFIG_IA64_GENERIC is not set
CONFIG_IA64_DIG=y
# CONFIG_IA64_HP_SIM is not set
+# CONFIG_IA64_HP_ZX1 is not set
# CONFIG_IA64_SGI_SN1 is not set
# CONFIG_IA64_SGI_SN2 is not set
# CONFIG_IA64_PAGE_SIZE_4KB is not set
# CONFIG_IA64_PAGE_SIZE_8KB is not set
CONFIG_IA64_PAGE_SIZE_16KB=y
# CONFIG_IA64_PAGE_SIZE_64KB is not set
+CONFIG_ACPI=y
+CONFIG_ACPI_EFI=y
+CONFIG_ACPI_INTERPRETER=y
+CONFIG_ACPI_KERNEL_CONFIG=y
CONFIG_IA64_BRL_EMU=y
# CONFIG_ITANIUM_BSTEP_SPECIFIC is not set
CONFIG_IA64_L1_CACHE_SHIFT=6
@@ -60,15 +61,23 @@
CONFIG_EFI_VARS=y
CONFIG_BINFMT_ELF=y
# CONFIG_BINFMT_MISC is not set
-# CONFIG_ACPI_DEBUG is not set
-CONFIG_ACPI_BUSMGR=y
-CONFIG_ACPI_SYS=y
-CONFIG_ACPI_CPU=y
+
+#
+# ACPI Support
+#
+CONFIG_ACPI=y
+CONFIG_ACPI_EFI=y
+CONFIG_ACPI_BOOT=y
+CONFIG_ACPI_BUS=y
+CONFIG_ACPI_INTERPRETER=y
+CONFIG_ACPI_PCI=y
+CONFIG_ACPI_POWER=y
+CONFIG_ACPI_SYSTEM=y
CONFIG_ACPI_BUTTON=y
-CONFIG_ACPI_AC=y
-CONFIG_ACPI_EC=y
-CONFIG_ACPI_CMBATT=y
-CONFIG_ACPI_THERMAL=y
+CONFIG_ACPI_FAN=m
+CONFIG_ACPI_PROCESSOR=m
+CONFIG_ACPI_THERMAL=m
+# CONFIG_ACPI_DEBUG is not set
CONFIG_PCI=y
CONFIG_PCI_NAMES=y
# CONFIG_HOTPLUG is not set
@@ -231,15 +240,13 @@
# CONFIG_BLK_DEV_ALI15X3 is not set
# CONFIG_WDC_ALI15X3 is not set
# CONFIG_BLK_DEV_AMD74XX is not set
-# CONFIG_AMD74XX_OVERRIDE is not set
# CONFIG_BLK_DEV_CMD64X is not set
# CONFIG_BLK_DEV_CY82C693 is not set
# CONFIG_BLK_DEV_CS5530 is not set
# CONFIG_BLK_DEV_HPT34X is not set
# CONFIG_HPT34X_AUTODMA is not set
# CONFIG_BLK_DEV_HPT366 is not set
-CONFIG_BLK_DEV_PIIX=y
-# CONFIG_PIIX_TUNING is not set
+# CONFIG_BLK_DEV_PIIX is not set
# CONFIG_BLK_DEV_NS87415 is not set
# CONFIG_BLK_DEV_OPTI621 is not set
# CONFIG_BLK_DEV_PDC_ADMA is not set
@@ -254,7 +261,6 @@
# CONFIG_IDEDMA_IVB is not set
# CONFIG_IDEDMA_AUTO is not set
# CONFIG_DMA_NONPCI is not set
-CONFIG_BLK_DEV_IDE_MODES=y
# CONFIG_BLK_DEV_ATARAID is not set
# CONFIG_BLK_DEV_ATARAID_PDC is not set
# CONFIG_BLK_DEV_ATARAID_HPT is not set
@@ -691,8 +697,6 @@
# CONFIG_MINIX_SUBPARTITION is not set
# CONFIG_SOLARIS_X86_PARTITION is not set
# CONFIG_UNIXWARE_DISKLABEL is not set
-CONFIG_EFI_PARTITION=y
-# CONFIG_DEVFS_GUID is not set
# CONFIG_LDM_PARTITION is not set
# CONFIG_SGI_PARTITION is not set
# CONFIG_ULTRIX_PARTITION is not set
@@ -726,6 +730,7 @@
# CONFIG_NLS_CODEPAGE_949 is not set
# CONFIG_NLS_CODEPAGE_874 is not set
# CONFIG_NLS_ISO8859_8 is not set
+# CONFIG_NLS_CODEPAGE_1250 is not set
# CONFIG_NLS_CODEPAGE_1251 is not set
# CONFIG_NLS_ISO8859_1 is not set
# CONFIG_NLS_ISO8859_2 is not set
@@ -814,8 +819,9 @@
# USB Device Class drivers
#
# CONFIG_USB_AUDIO is not set
-# CONFIG_USB_EMI26 is not set
-# CONFIG_USB_BLUETOOTH is not set
+# CONFIG_USB_BLUETOOTH_TTY is not set
+# CONFIG_USB_ACM is not set
+# CONFIG_USB_PRINTER is not set
# CONFIG_USB_STORAGE is not set
# CONFIG_USB_STORAGE_DEBUG is not set
# CONFIG_USB_STORAGE_DATAFAB is not set
@@ -825,13 +831,12 @@
# CONFIG_USB_STORAGE_HP8200e is not set
# CONFIG_USB_STORAGE_SDDR09 is not set
# CONFIG_USB_STORAGE_JUMPSHOT is not set
-# CONFIG_USB_ACM is not set
-# CONFIG_USB_PRINTER is not set
#
# USB Human Interface Devices (HID)
#
CONFIG_USB_HID=m
+CONFIG_USB_HIDINPUT=y
CONFIG_USB_HIDDEV=y
CONFIG_USB_KBD=m
CONFIG_USB_MOUSE=m
@@ -849,23 +854,24 @@
#
# USB Multimedia devices
#
+# CONFIG_USB_DABUSB is not set
+# CONFIG_USB_VICAM is not set
+# CONFIG_USB_DSBR is not set
# CONFIG_USB_IBMCAM is not set
+# CONFIG_USB_KONICAWC is not set
# CONFIG_USB_OV511 is not set
# CONFIG_USB_PWC is not set
# CONFIG_USB_SE401 is not set
# CONFIG_USB_STV680 is not set
-# CONFIG_USB_VICAM is not set
-# CONFIG_USB_DSBR is not set
-# CONFIG_USB_DABUSB is not set
-# CONFIG_USB_KONICAWC is not set
#
# USB Network adaptors
#
-# CONFIG_USB_PEGASUS is not set
-# CONFIG_USB_KAWETH is not set
# CONFIG_USB_CATC is not set
# CONFIG_USB_CDCETHER is not set
+# CONFIG_USB_KAWETH is not set
+# CONFIG_USB_PEGASUS is not set
+# CONFIG_USB_RTL8150 is not set
# CONFIG_USB_USBNET is not set
#
@@ -897,9 +903,11 @@
# CONFIG_USB_SERIAL_KEYSPAN_USA18X is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA19W is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA49W is not set
-# CONFIG_USB_SERIAL_MCT_U232 is not set
# CONFIG_USB_SERIAL_KLSI is not set
+# CONFIG_USB_SERIAL_MCT_U232 is not set
# CONFIG_USB_SERIAL_PL2303 is not set
+# CONFIG_USB_SERIAL_SAFE is not set
+# CONFIG_USB_SERIAL_SAFE_PADDED is not set
# CONFIG_USB_SERIAL_CYBERJACK is not set
# CONFIG_USB_SERIAL_XIRCOM is not set
# CONFIG_USB_SERIAL_OMNINET is not set
@@ -907,8 +915,10 @@
#
# USB Miscellaneous drivers
#
-# CONFIG_USB_RIO500 is not set
+# CONFIG_USB_EMI26 is not set
+# CONFIG_USB_TIGL is not set
# CONFIG_USB_AUERSWALD is not set
+# CONFIG_USB_RIO500 is not set
#
# Library routines
@@ -936,11 +946,3 @@
# CONFIG_DEBUG_SPINLOCK is not set
# CONFIG_IA64_DEBUG_CMPXCHG is not set
# CONFIG_IA64_DEBUG_IRQ is not set
-CONFIG_KDB=y
-# CONFIG_KDB_MODULES is not set
-# CONFIG_KDB_OFF is not set
-
-#
-# Load all symbols for debugging is required for KDB
-#
-CONFIG_KALLSYMS=y
diff -urN linux-2.5.8-pre3/arch/ia64/dig/setup.c lia64-2.5.8-pre3/arch/ia64/dig/setup.c
--- linux-2.5.8-pre3/arch/ia64/dig/setup.c Thu Apr 11 15:26:23 2002
+++ lia64-2.5.8-pre3/arch/ia64/dig/setup.c Thu Apr 11 16:28:37 2002
@@ -33,9 +33,6 @@
* is sufficient (the IDE driver will autodetect the drive geometry).
*/
char drive_info[4*16];
-extern int pcat_compat;
-
-unsigned char aux_device_present = 0xaa; /* XXX remove this when legacy I/O is gone */
void __init
dig_setup (char **cmdline_p)
@@ -85,16 +82,4 @@
void __init
dig_irq_init (void)
{
- if (pcat_compat) {
- /*
- * Disable the compatibility mode interrupts (8259 style), needs IN/OUT support
- * enabled.
- */
- printk("%s: Disabling PC-AT compatible 8259 interrupts\n", __FUNCTION__);
- outb(0xff, 0xA1);
- outb(0xff, 0x21);
- } else {
- printk("%s: System doesn't have PC-AT compatible dual-8259 setup. "
- "Nothing to be done\n", __FUNCTION__);
- }
}
diff -urN linux-2.5.8-pre3/arch/ia64/hp/Config.in lia64-2.5.8-pre3/arch/ia64/hp/Config.in
--- linux-2.5.8-pre3/arch/ia64/hp/Config.in Wed Dec 31 16:00:00 1969
+++ lia64-2.5.8-pre3/arch/ia64/hp/Config.in Thu Apr 11 16:28:15 2002
@@ -0,0 +1,9 @@
+mainmenu_option next_comment
+comment 'HP Simulator drivers'
+
+bool 'Simulated Ethernet ' CONFIG_HP_SIMETH
+bool 'Simulated serial driver support' CONFIG_HP_SIMSERIAL
+if [ "$CONFIG_SCSI" != "n" ]; then
+ bool 'Simulated SCSI disk' CONFIG_HP_SIMSCSI
+fi
+endmenu
diff -urN linux-2.5.8-pre3/arch/ia64/hp/Makefile lia64-2.5.8-pre3/arch/ia64/hp/Makefile
--- linux-2.5.8-pre3/arch/ia64/hp/Makefile Thu Apr 11 15:27:27 2002
+++ lia64-2.5.8-pre3/arch/ia64/hp/Makefile Thu Apr 11 16:29:26 2002
@@ -1,23 +1,15 @@
-#
-# ia64/platform/hp/Makefile
-#
-# Copyright (C) 2002 Hewlett-Packard Co.
-# David Mosberger-Tang
-# Copyright (C) 1999 Silicon Graphics, Inc.
-# Copyright (C) Srinivasa Thirumalachar (sprasad@engr.sgi.com)
-#
+# arch/ia64/hp/Makefile
+# Copyright (c) 2002 Matthew Wilcox for Hewlett Packard
-all: hp.a
+ALL_SUB_DIRS := sim zx1 common
-O_TARGET := hp.a
+O_TARGET := hp.o
-obj-y := hpsim_console.o hpsim_irq.o hpsim_setup.o
-obj-$(CONFIG_IA64_GENERIC) += hpsim_machvec.o
+subdir-$(CONFIG_IA64_GENERIC) += $(ALL_SUB_DIRS)
+subdir-$(CONFIG_IA64_HP_SIM) += sim
+subdir-$(CONFIG_IA64_HP_ZX1) += zx1 common
-obj-$(CONFIG_SIMETH) += simeth.o
-obj-$(CONFIG_SIM_SERIAL) += simserial.o
-obj-$(CONFIG_SCSI_SIM) += simscsi.o
-
-clean::
+SUB_DIRS := $(subdir-y)
+obj-y += $(join $(subdir-y),$(subdir-y:%=/%.o))
include $(TOPDIR)/Rules.make
diff -urN linux-2.5.8-pre3/arch/ia64/hp/common/Makefile lia64-2.5.8-pre3/arch/ia64/hp/common/Makefile
--- linux-2.5.8-pre3/arch/ia64/hp/common/Makefile Wed Dec 31 16:00:00 1969
+++ lia64-2.5.8-pre3/arch/ia64/hp/common/Makefile Thu Apr 11 16:28:41 2002
@@ -0,0 +1,28 @@
+#
+# ia64/platform/hp/common/Makefile
+#
+# Copyright (C) 2002 Hewlett Packard
+# Copyright (C) Alex Williamson (alex_williamson@hp.com)
+#
+
+O_TARGET := common.o
+
+export-objs := sba_iommu.o
+
+obj-y := sba_iommu.o
+
+include $(TOPDIR)/Rules.make
+#
+# ia64/platform/hp/common/Makefile
+#
+# Copyright (C) 2002 Hewlett Packard
+# Copyright (C) Alex Williamson (alex_williamson@hp.com)
+#
+
+O_TARGET := common.o
+
+export-objs := sba_iommu.o
+
+obj-y := sba_iommu.o
+
+include $(TOPDIR)/Rules.make
diff -urN linux-2.5.8-pre3/arch/ia64/hp/common/sba_iommu.c lia64-2.5.8-pre3/arch/ia64/hp/common/sba_iommu.c
--- linux-2.5.8-pre3/arch/ia64/hp/common/sba_iommu.c Wed Dec 31 16:00:00 1969
+++ lia64-2.5.8-pre3/arch/ia64/hp/common/sba_iommu.c Thu Apr 11 16:28:20 2002
@@ -0,0 +1,3700 @@
+/*
+** IA64 System Bus Adapter (SBA) I/O MMU manager
+**
+** (c) Copyright 2002 Alex Williamson
+** (c) Copyright 2002 Hewlett-Packard Company
+**
+** Portions (c) 2000 Grant Grundler (from parisc I/O MMU code)
+** Portions (c) 1999 Dave S. Miller (from sparc64 I/O MMU code)
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+**
+** This module initializes the IOC (I/O Controller) found on HP
+** McKinley machines and their successors.
+**
+*/
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+#include /* ia64_get_itc() */
+#include
+#include /* PAGE_OFFSET */
+#include
+
+
+#define DRIVER_NAME "SBA"
+
+#ifndef CONFIG_IA64_HP_PROTO
+#define ALLOW_IOV_BYPASS
+#endif
+#define ENABLE_MARK_CLEAN
+/*
+** The number of debug flags is a clue - this code is fragile.
+*/
+#undef DEBUG_SBA_INIT
+#undef DEBUG_SBA_RUN
+#undef DEBUG_SBA_RUN_SG
+#undef DEBUG_SBA_RESOURCE
+#undef ASSERT_PDIR_SANITY
+#undef DEBUG_LARGE_SG_ENTRIES
+#undef DEBUG_BYPASS
+
+#define SBA_INLINE __inline__
+/* #define SBA_INLINE */
+
+#ifdef DEBUG_SBA_INIT
+#define DBG_INIT(x...) printk(x)
+#else
+#define DBG_INIT(x...)
+#endif
+
+#ifdef DEBUG_SBA_RUN
+#define DBG_RUN(x...) printk(x)
+#else
+#define DBG_RUN(x...)
+#endif
+
+#ifdef DEBUG_SBA_RUN_SG
+#define DBG_RUN_SG(x...) printk(x)
+#else
+#define DBG_RUN_SG(x...)
+#endif
+
+
+#ifdef DEBUG_SBA_RESOURCE
+#define DBG_RES(x...) printk(x)
+#else
+#define DBG_RES(x...)
+#endif
+
+#ifdef DEBUG_BYPASS
+#define DBG_BYPASS(x...) printk(x)
+#else
+#define DBG_BYPASS(x...)
+#endif
+
+#ifdef ASSERT_PDIR_SANITY
+#define ASSERT(expr) \
+ if(!(expr)) { \
+ printk( "\n" __FILE__ ":%d: Assertion " #expr " failed!\n",__LINE__); \
+ panic(#expr); \
+ }
+#else
+#define ASSERT(expr)
+#endif
+
+#define KB(x) ((x) * 1024)
+#define MB(x) (KB (KB (x)))
+#define GB(x) (MB (KB (x)))
+
+/*
+** The number of pdir entries to "free" before issueing
+** a read to PCOM register to flush out PCOM writes.
+** Interacts with allocation granularity (ie 4 or 8 entries
+** allocated and free'd/purged at a time might make this
+** less interesting).
+*/
+#define DELAYED_RESOURCE_CNT 16
+
+#define DEFAULT_DMA_HINT_REG 0
+
+#define ZX1_FUNC_ID_VALUE ((PCI_DEVICE_ID_HP_ZX1_SBA << 16) | PCI_VENDOR_ID_HP)
+#define ZX1_MC_ID ((PCI_DEVICE_ID_HP_ZX1_MC << 16) | PCI_VENDOR_ID_HP)
+
+#define SBA_FUNC_ID 0x0000 /* function id */
+#define SBA_FCLASS 0x0008 /* function class, bist, header, rev... */
+
+#define SBA_FUNC_SIZE 0x10000 /* SBA configuration function reg set */
+
+unsigned int __initdata zx1_func_offsets[] = {0x1000, 0x4000, 0x8000,
+ 0x9000, 0xa000, -1};
+
+#define SBA_IOC_OFFSET 0x1000
+
+#define MAX_IOC 1 /* we only have 1 for now*/
+
+#define IOC_IBASE 0x300 /* IO TLB */
+#define IOC_IMASK 0x308
+#define IOC_PCOM 0x310
+#define IOC_TCNFG 0x318
+#define IOC_PDIR_BASE 0x320
+
+#define IOC_IOVA_SPACE_BASE 0x40000000 /* IOVA ranges start at 1GB */
+
+/*
+** IOC supports 4/8/16/64KB page sizes (see TCNFG register)
+** It's safer (avoid memory corruption) to keep DMA page mappings
+** equivalently sized to VM PAGE_SIZE.
+**
+** We really can't avoid generating a new mapping for each
+** page since the Virtual Coherence Index has to be generated
+** and updated for each page.
+**
+** IOVP_SIZE could only be greater than PAGE_SIZE if we are
+** confident the drivers really only touch the next physical
+** page iff that driver instance owns it.
+*/
+#define IOVP_SIZE PAGE_SIZE
+#define IOVP_SHIFT PAGE_SHIFT
+#define IOVP_MASK PAGE_MASK
+
+struct ioc {
+ unsigned long ioc_hpa; /* I/O MMU base address */
+ char *res_map; /* resource map, bit == pdir entry */
+ u64 *pdir_base; /* physical base address */
+ unsigned long ibase; /* pdir IOV Space base */
+ unsigned long imask; /* pdir IOV Space mask */
+
+ unsigned long *res_hint; /* next avail IOVP - circular search */
+ spinlock_t res_lock;
+ unsigned long hint_mask_pdir; /* bits used for DMA hints */
+ unsigned int res_bitshift; /* from the RIGHT! */
+ unsigned int res_size; /* size of resource map in bytes */
+ unsigned int hint_shift_pdir;
+ unsigned long dma_mask;
+#if DELAYED_RESOURCE_CNT > 0
+ int saved_cnt;
+ struct sba_dma_pair {
+ dma_addr_t iova;
+ size_t size;
+ } saved[DELAYED_RESOURCE_CNT];
+#endif
+
+#ifdef CONFIG_PROC_FS
+#define SBA_SEARCH_SAMPLE 0x100
+ unsigned long avg_search[SBA_SEARCH_SAMPLE];
+ unsigned long avg_idx; /* current index into avg_search */
+ unsigned long used_pages;
+ unsigned long msingle_calls;
+ unsigned long msingle_pages;
+ unsigned long msg_calls;
+ unsigned long msg_pages;
+ unsigned long usingle_calls;
+ unsigned long usingle_pages;
+ unsigned long usg_calls;
+ unsigned long usg_pages;
+#ifdef ALLOW_IOV_BYPASS
+ unsigned long msingle_bypass;
+ unsigned long usingle_bypass;
+ unsigned long msg_bypass;
+#endif
+#endif
+
+ /* STUFF We don't need in performance path */
+ unsigned int pdir_size; /* in bytes, determined by IOV Space size */
+};
+
+struct sba_device {
+ struct sba_device *next; /* list of SBA's in system */
+ const char *name;
+ unsigned long sba_hpa; /* base address */
+ spinlock_t sba_lock;
+ unsigned int flags; /* state/functionality enabled */
+ unsigned int hw_rev; /* HW revision of chip */
+
+ unsigned int num_ioc; /* number of on-board IOC's */
+ struct ioc ioc[MAX_IOC];
+};
+
+
+static struct sba_device *sba_list;
+static int sba_count;
+static int reserve_sba_gart = 1;
+
+#define sba_sg_iova(sg) (sg->address)
+#define sba_sg_len(sg) (sg->length)
+#define sba_sg_buffer(sg) (sg->orig_address)
+
+/* REVISIT - fix me for multiple SBAs/IOCs */
+#define GET_IOC(dev) (sba_list->ioc)
+#define SBA_SET_AGP(sba_dev) (sba_dev->flags |= 0x1)
+#define SBA_GET_AGP(sba_dev) (sba_dev->flags & 0x1)
+
+/*
+** DMA_CHUNK_SIZE is used by the SCSI mid-layer to break up
+** (or rather not merge) DMA's into managable chunks.
+** On parisc, this is more of the software/tuning constraint
+** rather than the HW. I/O MMU allocation alogorithms can be
+** faster with smaller size is (to some degree).
+*/
+#define DMA_CHUNK_SIZE (BITS_PER_LONG*PAGE_SIZE)
+
+/* Looks nice and keeps the compiler happy */
+#define SBA_DEV(d) ((struct sba_device *) (d))
+
+#define ROUNDUP(x,y) ((x + ((y)-1)) & ~((y)-1))
+
+/************************************
+** SBA register read and write support
+**
+** BE WARNED: register writes are posted.
+** (ie follow writes which must reach HW with a read)
+**
+*/
+#define READ_REG(addr) __raw_readq(addr)
+#define WRITE_REG(val, addr) __raw_writeq(val, addr)
+
+#ifdef DEBUG_SBA_INIT
+
+/**
+ * sba_dump_tlb - debugging only - print IOMMU operating parameters
+ * @hpa: base address of the IOMMU
+ *
+ * Print the size/location of the IO MMU PDIR.
+ */
+static void
+sba_dump_tlb(char *hpa)
+{
+ DBG_INIT("IO TLB at 0x%p\n", (void *)hpa);
+ DBG_INIT("IOC_IBASE : %016lx\n", READ_REG(hpa+IOC_IBASE));
+ DBG_INIT("IOC_IMASK : %016lx\n", READ_REG(hpa+IOC_IMASK));
+ DBG_INIT("IOC_TCNFG : %016lx\n", READ_REG(hpa+IOC_TCNFG));
+ DBG_INIT("IOC_PDIR_BASE: %016lx\n", READ_REG(hpa+IOC_PDIR_BASE));
+ DBG_INIT("\n");
+}
+#endif
+
+
+#ifdef ASSERT_PDIR_SANITY
+
+/**
+ * sba_dump_pdir_entry - debugging only - print one IOMMU PDIR entry
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @msg: text to print ont the output line.
+ * @pide: pdir index.
+ *
+ * Print one entry of the IO MMU PDIR in human readable form.
+ */
+static void
+sba_dump_pdir_entry(struct ioc *ioc, char *msg, uint pide)
+{
+ /* start printing from lowest pde in rval */
+ u64 *ptr = &(ioc->pdir_base[pide & ~(BITS_PER_LONG - 1)]);
+ unsigned long *rptr = (unsigned long *) &(ioc->res_map[(pide >>3) & ~(sizeof(unsigned long) - 1)]);
+ uint rcnt;
+
+ /* printk(KERN_DEBUG "SBA: %s rp %p bit %d rval 0x%lx\n", */
+ printk("SBA: %s rp %p bit %d rval 0x%lx\n",
+ msg, rptr, pide & (BITS_PER_LONG - 1), *rptr);
+
+ rcnt = 0;
+ while (rcnt < BITS_PER_LONG) {
+ printk("%s %2d %p %016Lx\n",
+ (rcnt == (pide & (BITS_PER_LONG - 1)))
+ ? " -->" : " ",
+ rcnt, ptr, *ptr );
+ rcnt++;
+ ptr++;
+ }
+ printk("%s", msg);
+}
+
+
+/**
+ * sba_check_pdir - debugging only - consistency checker
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @msg: text to print ont the output line.
+ *
+ * Verify the resource map and pdir state is consistent
+ */
+static int
+sba_check_pdir(struct ioc *ioc, char *msg)
+{
+ u64 *rptr_end = (u64 *) &(ioc->res_map[ioc->res_size]);
+ u64 *rptr = (u64 *) ioc->res_map; /* resource map ptr */
+ u64 *pptr = ioc->pdir_base; /* pdir ptr */
+ uint pide = 0;
+
+ while (rptr < rptr_end) {
+ u64 rval;
+ int rcnt; /* number of bits we might check */
+
+ rval = *rptr;
+ rcnt = 64;
+
+ while (rcnt) {
+ /* Get last byte and highest bit from that */
+ u32 pde = ((u32)((*pptr >> (63)) & 0x1));
+ if ((rval & 0x1) ^ pde)
+ {
+ /*
+ ** BUMMER! -- res_map != pdir --
+ ** Dump rval and matching pdir entries
+ */
+ sba_dump_pdir_entry(ioc, msg, pide);
+ return(1);
+ }
+ rcnt--;
+ rval >>= 1; /* try the next bit */
+ pptr++;
+ pide++;
+ }
+ rptr++; /* look at next word of res_map */
+ }
+ /* It'd be nice if we always got here :^) */
+ return 0;
+}
+
+
+/**
+ * sba_dump_sg - debugging only - print Scatter-Gather list
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @startsg: head of the SG list
+ * @nents: number of entries in SG list
+ *
+ * print the SG list so we can verify it's correct by hand.
+ */
+static void
+sba_dump_sg( struct ioc *ioc, struct scatterlist *startsg, int nents)
+{
+ while (nents-- > 0) {
+ printk(" %d : %08lx/%05x %p\n",
+ nents,
+ (unsigned long) sba_sg_iova(startsg),
+ sba_sg_len(startsg),
+ sba_sg_buffer(startsg));
+ startsg++;
+ }
+}
+static void
+sba_check_sg( struct ioc *ioc, struct scatterlist *startsg, int nents)
+{
+ struct scatterlist *the_sg = startsg;
+ int the_nents = nents;
+
+ while (the_nents-- > 0) {
+ if (sba_sg_buffer(the_sg) == 0x0UL)
+ sba_dump_sg(NULL, startsg, nents);
+ the_sg++;
+ }
+}
+
+#endif /* ASSERT_PDIR_SANITY */
+
+
+
+
+/**************************************************************
+*
+* I/O Pdir Resource Management
+*
+* Bits set in the resource map are in use.
+* Each bit can represent a number of pages.
+* LSbs represent lower addresses (IOVA's).
+*
+***************************************************************/
+#define PAGES_PER_RANGE 1 /* could increase this to 4 or 8 if needed */
+
+/* Convert from IOVP to IOVA and vice versa. */
+#define SBA_IOVA(ioc,iovp,offset,hint_reg) ((ioc->ibase) | (iovp) | (offset) | ((hint_reg)<<(ioc->hint_shift_pdir)))
+#define SBA_IOVP(ioc,iova) (((iova) & ioc->hint_mask_pdir) & ~(ioc->ibase))
+
+/* FIXME : review these macros to verify correctness and usage */
+#define PDIR_INDEX(iovp) ((iovp)>>IOVP_SHIFT)
+
+#define RESMAP_MASK(n) ~(~0UL << (n))
+#define RESMAP_IDX_MASK (sizeof(unsigned long) - 1)
+
+
+/**
+ * sba_search_bitmap - find free space in IO PDIR resource bitmap
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @bits_wanted: number of entries we need.
+ *
+ * Find consecutive free bits in resource bitmap.
+ * Each bit represents one entry in the IO Pdir.
+ * Cool perf optimization: search for log2(size) bits at a time.
+ */
+static SBA_INLINE unsigned long
+sba_search_bitmap(struct ioc *ioc, unsigned long bits_wanted)
+{
+ unsigned long *res_ptr = ioc->res_hint;
+ unsigned long *res_end = (unsigned long *) &(ioc->res_map[ioc->res_size]);
+ unsigned long pide = ~0UL;
+
+ ASSERT(((unsigned long) ioc->res_hint & (sizeof(unsigned long) - 1UL)) == 0);
+ ASSERT(res_ptr < res_end);
+ if (bits_wanted > (BITS_PER_LONG/2)) {
+ /* Search word at a time - no mask needed */
+ for(; res_ptr < res_end; ++res_ptr) {
+ if (*res_ptr == 0) {
+ *res_ptr = RESMAP_MASK(bits_wanted);
+ pide = ((unsigned long)res_ptr - (unsigned long)ioc->res_map);
+ pide <<= 3; /* convert to bit address */
+ break;
+ }
+ }
+ /* point to the next word on next pass */
+ res_ptr++;
+ ioc->res_bitshift = 0;
+ } else {
+ /*
+ ** Search the resource bit map on well-aligned values.
+ ** "o" is the alignment.
+ ** We need the alignment to invalidate I/O TLB using
+ ** SBA HW features in the unmap path.
+ */
+ unsigned long o = 1 << get_order(bits_wanted << PAGE_SHIFT);
+ uint bitshiftcnt = ROUNDUP(ioc->res_bitshift, o);
+ unsigned long mask;
+
+ if (bitshiftcnt >= BITS_PER_LONG) {
+ bitshiftcnt = 0;
+ res_ptr++;
+ }
+ mask = RESMAP_MASK(bits_wanted) << bitshiftcnt;
+
+ DBG_RES("%s() o %ld %p", __FUNCTION__, o, res_ptr);
+ while(res_ptr < res_end)
+ {
+ DBG_RES(" %p %lx %lx\n", res_ptr, mask, *res_ptr);
+ ASSERT(0 != mask);
+ if(0 == ((*res_ptr) & mask)) {
+ *res_ptr |= mask; /* mark resources busy! */
+ pide = ((unsigned long)res_ptr - (unsigned long)ioc->res_map);
+ pide <<= 3; /* convert to bit address */
+ pide += bitshiftcnt;
+ break;
+ }
+ mask <<= o;
+ bitshiftcnt += o;
+ if (0 == mask) {
+ mask = RESMAP_MASK(bits_wanted);
+ bitshiftcnt=0;
+ res_ptr++;
+ }
+ }
+ /* look in the same word on the next pass */
+ ioc->res_bitshift = bitshiftcnt + bits_wanted;
+ }
+
+ /* wrapped ? */
+ if (res_end <= res_ptr) {
+ ioc->res_hint = (unsigned long *) ioc->res_map;
+ ioc->res_bitshift = 0;
+ } else {
+ ioc->res_hint = res_ptr;
+ }
+ return (pide);
+}
+
+
+/**
+ * sba_alloc_range - find free bits and mark them in IO PDIR resource bitmap
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @size: number of bytes to create a mapping for
+ *
+ * Given a size, find consecutive unmarked and then mark those bits in the
+ * resource bit map.
+ */
+static int
+sba_alloc_range(struct ioc *ioc, size_t size)
+{
+ unsigned int pages_needed = size >> IOVP_SHIFT;
+#ifdef CONFIG_PROC_FS
+ unsigned long itc_start = ia64_get_itc();
+#endif
+ unsigned long pide;
+
+ ASSERT(pages_needed);
+ ASSERT((pages_needed * IOVP_SIZE) <= DMA_CHUNK_SIZE);
+ ASSERT(pages_needed <= BITS_PER_LONG);
+ ASSERT(0 == (size & ~IOVP_MASK));
+
+ /*
+ ** "seek and ye shall find"...praying never hurts either...
+ */
+
+ pide = sba_search_bitmap(ioc, pages_needed);
+ if (pide >= (ioc->res_size << 3)) {
+ pide = sba_search_bitmap(ioc, pages_needed);
+ if (pide >= (ioc->res_size << 3))
+ panic(__FILE__ ": I/O MMU @ %lx is out of mapping resources\n", ioc->ioc_hpa);
+ }
+
+#ifdef ASSERT_PDIR_SANITY
+ /* verify the first enable bit is clear */
+ if(0x00 != ((u8 *) ioc->pdir_base)[pide*sizeof(u64) + 7]) {
+ sba_dump_pdir_entry(ioc, "sba_search_bitmap() botched it?", pide);
+ }
+#endif
+
+ DBG_RES("%s(%x) %d -> %lx hint %x/%x\n",
+ __FUNCTION__, size, pages_needed, pide,
+ (uint) ((unsigned long) ioc->res_hint - (unsigned long) ioc->res_map),
+ ioc->res_bitshift );
+
+#ifdef CONFIG_PROC_FS
+ {
+ unsigned long itc_end = ia64_get_itc();
+ unsigned long tmp = itc_end - itc_start;
+ /* check for roll over */
+ itc_start = (itc_end < itc_start) ? -(tmp) : (tmp);
+ }
+ ioc->avg_search[ioc->avg_idx++] = itc_start;
+ ioc->avg_idx &= SBA_SEARCH_SAMPLE - 1;
+
+ ioc->used_pages += pages_needed;
+#endif
+
+ return (pide);
+}
+
+
+/**
+ * sba_free_range - unmark bits in IO PDIR resource bitmap
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @iova: IO virtual address which was previously allocated.
+ * @size: number of bytes to create a mapping for
+ *
+ * clear bits in the ioc's resource map
+ */
+static SBA_INLINE void
+sba_free_range(struct ioc *ioc, dma_addr_t iova, size_t size)
+{
+ unsigned long iovp = SBA_IOVP(ioc, iova);
+ unsigned int pide = PDIR_INDEX(iovp);
+ unsigned int ridx = pide >> 3; /* convert bit to byte address */
+ unsigned long *res_ptr = (unsigned long *) &((ioc)->res_map[ridx & ~RESMAP_IDX_MASK]);
+
+ int bits_not_wanted = size >> IOVP_SHIFT;
+
+ /* 3-bits "bit" address plus 2 (or 3) bits for "byte" == bit in word */
+ unsigned long m = RESMAP_MASK(bits_not_wanted) << (pide & (BITS_PER_LONG - 1));
+
+ DBG_RES("%s( ,%x,%x) %x/%lx %x %p %lx\n",
+ __FUNCTION__, (uint) iova, size,
+ bits_not_wanted, m, pide, res_ptr, *res_ptr);
+
+#ifdef CONFIG_PROC_FS
+ ioc->used_pages -= bits_not_wanted;
+#endif
+
+ ASSERT(m != 0);
+ ASSERT(bits_not_wanted);
+ ASSERT((bits_not_wanted * IOVP_SIZE) <= DMA_CHUNK_SIZE);
+ ASSERT(bits_not_wanted <= BITS_PER_LONG);
+ ASSERT((*res_ptr & m) == m); /* verify same bits are set */
+ *res_ptr &= ~m;
+}
+
+
+/**************************************************************
+*
+* "Dynamic DMA Mapping" support (aka "Coherent I/O")
+*
+***************************************************************/
+
+#define SBA_DMA_HINT(ioc, val) ((val) << (ioc)->hint_shift_pdir)
+
+
+/**
+ * sba_io_pdir_entry - fill in one IO PDIR entry
+ * @pdir_ptr: pointer to IO PDIR entry
+ * @vba: Virtual CPU address of buffer to map
+ *
+ * SBA Mapping Routine
+ *
+ * Given a virtual address (vba, arg1) sba_io_pdir_entry()
+ * loads the I/O PDIR entry pointed to by pdir_ptr (arg0).
+ * Each IO Pdir entry consists of 8 bytes as shown below
+ * (LSB == bit 0):
+ *
+ * 63 40 11 7 0
+ * +-+---------------------+----------------------------------+----+--------+
+ * |V| U | PPN[39:12] | U | FF |
+ * +-+---------------------+----------------------------------+----+--------+
+ *
+ * V == Valid Bit
+ * U == Unused
+ * PPN == Physical Page Number
+ *
+ * The physical address fields are filled with the results of virt_to_phys()
+ * on the vba.
+ */
+
+#if 1
+#define sba_io_pdir_entry(pdir_ptr, vba) *pdir_ptr = ((vba & ~0xE000000000000FFFULL) | 0x80000000000000FFULL)
+#else
+void SBA_INLINE
+sba_io_pdir_entry(u64 *pdir_ptr, unsigned long vba)
+{
+ *pdir_ptr = ((vba & ~0xE000000000000FFFULL) | 0x80000000000000FFULL);
+}
+#endif
+
+#ifdef ENABLE_MARK_CLEAN
+/**
+ * Since DMA is i-cache coherent, any (complete) pages that were written via
+ * DMA can be marked as "clean" so that update_mmu_cache() doesn't have to
+ * flush them when they get mapped into an executable vm-area.
+ */
+static void
+mark_clean (void *addr, size_t size)
+{
+ unsigned long pg_addr, end;
+
+ pg_addr = PAGE_ALIGN((unsigned long) addr);
+ end = (unsigned long) addr + size;
+ while (pg_addr + PAGE_SIZE <= end) {
+ struct page *page = virt_to_page(pg_addr);
+ set_bit(PG_arch_1, &page->flags);
+ pg_addr += PAGE_SIZE;
+ }
+}
+#endif
+
+/**
+ * sba_mark_invalid - invalidate one or more IO PDIR entries
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @iova: IO Virtual Address mapped earlier
+ * @byte_cnt: number of bytes this mapping covers.
+ *
+ * Marking the IO PDIR entry(ies) as Invalid and invalidate
+ * corresponding IO TLB entry. The PCOM (Purge Command Register)
+ * is to purge stale entries in the IO TLB when unmapping entries.
+ *
+ * The PCOM register supports purging of multiple pages, with a minium
+ * of 1 page and a maximum of 2GB. Hardware requires the address be
+ * aligned to the size of the range being purged. The size of the range
+ * must be a power of 2. The "Cool perf optimization" in the
+ * allocation routine helps keep that true.
+ */
+static SBA_INLINE void
+sba_mark_invalid(struct ioc *ioc, dma_addr_t iova, size_t byte_cnt)
+{
+ u32 iovp = (u32) SBA_IOVP(ioc,iova);
+
+ int off = PDIR_INDEX(iovp);
+
+ /* Must be non-zero and rounded up */
+ ASSERT(byte_cnt > 0);
+ ASSERT(0 == (byte_cnt & ~IOVP_MASK));
+
+#ifdef ASSERT_PDIR_SANITY
+ /* Assert first pdir entry is set */
+ if (!(ioc->pdir_base[off] >> 60)) {
+ sba_dump_pdir_entry(ioc,"sba_mark_invalid()", PDIR_INDEX(iovp));
+ }
+#endif
+
+ if (byte_cnt <= IOVP_SIZE)
+ {
+ ASSERT(off < ioc->pdir_size);
+
+ iovp |= IOVP_SHIFT; /* set "size" field for PCOM */
+
+ /*
+ ** clear I/O PDIR entry "valid" bit
+ ** Do NOT clear the rest - save it for debugging.
+ ** We should only clear bits that have previously
+ ** been enabled.
+ */
+ ioc->pdir_base[off] &= ~(0x80000000000000FFULL);
+ } else {
+ u32 t = get_order(byte_cnt) + PAGE_SHIFT;
+
+ iovp |= t;
+ ASSERT(t <= 31); /* 2GB! Max value of "size" field */
+
+ do {
+ /* verify this pdir entry is enabled */
+ ASSERT(ioc->pdir_base[off] >> 63);
+ /* clear I/O Pdir entry "valid" bit first */
+ ioc->pdir_base[off] &= ~(0x80000000000000FFULL);
+ off++;
+ byte_cnt -= IOVP_SIZE;
+ } while (byte_cnt > 0);
+ }
+
+ WRITE_REG(iovp, ioc->ioc_hpa+IOC_PCOM);
+}
+
+/**
+ * sba_map_single - map one buffer and return IOVA for DMA
+ * @dev: instance of PCI owned by the driver that's asking.
+ * @addr: driver buffer to map.
+ * @size: number of bytes to map in driver buffer.
+ * @direction: R/W or both.
+ *
+ * See Documentation/DMA-mapping.txt
+ */
+dma_addr_t
+sba_map_single(struct pci_dev *dev, void *addr, size_t size, int direction)
+{
+ struct ioc *ioc;
+ unsigned long flags;
+ dma_addr_t iovp;
+ dma_addr_t offset;
+ u64 *pdir_start;
+ int pide;
+#ifdef ALLOW_IOV_BYPASS
+ unsigned long pci_addr = virt_to_phys(addr);
+#endif
+
+ ioc = GET_IOC(dev);
+ ASSERT(ioc);
+
+#ifdef ALLOW_IOV_BYPASS
+ /*
+ ** Check if the PCI device can DMA to ptr... if so, just return ptr
+ */
+ if ((pci_addr & ~dev->dma_mask) == 0) {
+ /*
+ ** Device is bit capable of DMA'ing to the buffer...
+ ** just return the PCI address of ptr
+ */
+#ifdef CONFIG_PROC_FS
+ spin_lock_irqsave(&ioc->res_lock, flags);
+ ioc->msingle_bypass++;
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+#endif
+ DBG_BYPASS("sba_map_single() bypass mask/addr: 0x%lx/0x%lx\n",
+ dev->dma_mask, pci_addr);
+ return pci_addr;
+ }
+#endif
+
+ ASSERT(size > 0);
+ ASSERT(size <= DMA_CHUNK_SIZE);
+
+ /* save offset bits */
+ offset = ((dma_addr_t) (long) addr) & ~IOVP_MASK;
+
+ /* round up to nearest IOVP_SIZE */
+ size = (size + offset + ~IOVP_MASK) & IOVP_MASK;
+
+ spin_lock_irqsave(&ioc->res_lock, flags);
+#ifdef ASSERT_PDIR_SANITY
+ if (sba_check_pdir(ioc,"Check before sba_map_single()"))
+ panic("Sanity check failed");
+#endif
+
+#ifdef CONFIG_PROC_FS
+ ioc->msingle_calls++;
+ ioc->msingle_pages += size >> IOVP_SHIFT;
+#endif
+ pide = sba_alloc_range(ioc, size);
+ iovp = (dma_addr_t) pide << IOVP_SHIFT;
+
+ DBG_RUN("%s() 0x%p -> 0x%lx\n",
+ __FUNCTION__, addr, (long) iovp | offset);
+
+ pdir_start = &(ioc->pdir_base[pide]);
+
+ while (size > 0) {
+ ASSERT(((u8 *)pdir_start)[7] == 0); /* verify availability */
+ sba_io_pdir_entry(pdir_start, (unsigned long) addr);
+
+ DBG_RUN(" pdir 0x%p %lx\n", pdir_start, *pdir_start);
+
+ addr += IOVP_SIZE;
+ size -= IOVP_SIZE;
+ pdir_start++;
+ }
+ /* form complete address */
+#ifdef ASSERT_PDIR_SANITY
+ sba_check_pdir(ioc,"Check after sba_map_single()");
+#endif
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+ return SBA_IOVA(ioc, iovp, offset, DEFAULT_DMA_HINT_REG);
+}
+
+/**
+ * sba_unmap_single - unmap one IOVA and free resources
+ * @dev: instance of PCI owned by the driver that's asking.
+ * @iova: IOVA of driver buffer previously mapped.
+ * @size: number of bytes mapped in driver buffer.
+ * @direction: R/W or both.
+ *
+ * See Documentation/DMA-mapping.txt
+ */
+void sba_unmap_single(struct pci_dev *dev, dma_addr_t iova, size_t size,
+ int direction)
+{
+ struct ioc *ioc;
+#if DELAYED_RESOURCE_CNT > 0
+ struct sba_dma_pair *d;
+#endif
+ unsigned long flags;
+ dma_addr_t offset;
+
+ ioc = GET_IOC(dev);
+ ASSERT(ioc);
+
+#ifdef ALLOW_IOV_BYPASS
+ if ((iova & ioc->imask) != ioc->ibase) {
+ /*
+ ** Address does not fall w/in IOVA, must be bypassing
+ */
+#ifdef CONFIG_PROC_FS
+ spin_lock_irqsave(&ioc->res_lock, flags);
+ ioc->usingle_bypass++;
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+#endif
+ DBG_BYPASS("sba_unmap_single() bypass addr: 0x%lx\n", iova);
+
+#ifdef ENABLE_MARK_CLEAN
+ if (direction == PCI_DMA_FROMDEVICE) {
+ mark_clean(phys_to_virt(iova), size);
+ }
+#endif
+ return;
+ }
+#endif
+ offset = iova & ~IOVP_MASK;
+
+ DBG_RUN("%s() iovp 0x%lx/%x\n",
+ __FUNCTION__, (long) iova, size);
+
+ iova ^= offset; /* clear offset bits */
+ size += offset;
+ size = ROUNDUP(size, IOVP_SIZE);
+
+ spin_lock_irqsave(&ioc->res_lock, flags);
+#ifdef CONFIG_PROC_FS
+ ioc->usingle_calls++;
+ ioc->usingle_pages += size >> IOVP_SHIFT;
+#endif
+
+#if DELAYED_RESOURCE_CNT > 0
+ d = &(ioc->saved[ioc->saved_cnt]);
+ d->iova = iova;
+ d->size = size;
+ if (++(ioc->saved_cnt) >= DELAYED_RESOURCE_CNT) {
+ int cnt = ioc->saved_cnt;
+ while (cnt--) {
+ sba_mark_invalid(ioc, d->iova, d->size);
+ sba_free_range(ioc, d->iova, d->size);
+ d--;
+ }
+ ioc->saved_cnt = 0;
+ READ_REG(ioc->ioc_hpa+IOC_PCOM); /* flush purges */
+ }
+#else /* DELAYED_RESOURCE_CNT == 0 */
+ sba_mark_invalid(ioc, iova, size);
+ sba_free_range(ioc, iova, size);
+ READ_REG(ioc->ioc_hpa+IOC_PCOM); /* flush purges */
+#endif /* DELAYED_RESOURCE_CNT == 0 */
+#ifdef ENABLE_MARK_CLEAN
+ if (direction == PCI_DMA_FROMDEVICE) {
+ u32 iovp = (u32) SBA_IOVP(ioc,iova);
+ int off = PDIR_INDEX(iovp);
+ void *addr;
+
+ if (size <= IOVP_SIZE) {
+ addr = phys_to_virt(ioc->pdir_base[off] &
+ ~0xE000000000000FFFULL);
+ mark_clean(addr, size);
+ } else {
+ size_t byte_cnt = size;
+
+ do {
+ addr = phys_to_virt(ioc->pdir_base[off] &
+ ~0xE000000000000FFFULL);
+ mark_clean(addr, min(byte_cnt, IOVP_SIZE));
+ off++;
+ byte_cnt -= IOVP_SIZE;
+
+ } while (byte_cnt > 0);
+ }
+ }
+#endif
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+
+ /* XXX REVISIT for 2.5 Linux - need syncdma for zero-copy support.
+ ** For Astro based systems this isn't a big deal WRT performance.
+ ** As long as 2.4 kernels copyin/copyout data from/to userspace,
+ ** we don't need the syncdma. The issue here is I/O MMU cachelines
+ ** are *not* coherent in all cases. May be hwrev dependent.
+ ** Need to investigate more.
+ asm volatile("syncdma");
+ */
+}
+
+
+/**
+ * sba_alloc_consistent - allocate/map shared mem for DMA
+ * @hwdev: instance of PCI owned by the driver that's asking.
+ * @size: number of bytes mapped in driver buffer.
+ * @dma_handle: IOVA of new buffer.
+ *
+ * See Documentation/DMA-mapping.txt
+ */
+void *
+sba_alloc_consistent(struct pci_dev *hwdev, size_t size, dma_addr_t *dma_handle)
+{
+ void *ret;
+
+ if (!hwdev) {
+ /* only support PCI */
+ *dma_handle = 0;
+ return 0;
+ }
+
+ ret = (void *) __get_free_pages(GFP_ATOMIC, get_order(size));
+
+ if (ret) {
+ memset(ret, 0, size);
+ *dma_handle = sba_map_single(hwdev, ret, size, 0);
+ }
+
+ return ret;
+}
+
+
+/**
+ * sba_free_consistent - free/unmap shared mem for DMA
+ * @hwdev: instance of PCI owned by the driver that's asking.
+ * @size: number of bytes mapped in driver buffer.
+ * @vaddr: virtual address IOVA of "consistent" buffer.
+ * @dma_handler: IO virtual address of "consistent" buffer.
+ *
+ * See Documentation/DMA-mapping.txt
+ */
+void sba_free_consistent(struct pci_dev *hwdev, size_t size, void *vaddr,
+ dma_addr_t dma_handle)
+{
+ sba_unmap_single(hwdev, dma_handle, size, 0);
+ free_pages((unsigned long) vaddr, get_order(size));
+}
+
+
+/*
+** Since 0 is a valid pdir_base index value, can't use that
+** to determine if a value is valid or not. Use a flag to indicate
+** the SG list entry contains a valid pdir index.
+*/
+#define PIDE_FLAG 0x1UL
+
+#ifdef DEBUG_LARGE_SG_ENTRIES
+int dump_run_sg = 0;
+#endif
+
+
+/**
+ * sba_fill_pdir - write allocated SG entries into IO PDIR
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @startsg: list of IOVA/size pairs
+ * @nents: number of entries in startsg list
+ *
+ * Take preprocessed SG list and write corresponding entries
+ * in the IO PDIR.
+ */
+
+static SBA_INLINE int
+sba_fill_pdir(
+ struct ioc *ioc,
+ struct scatterlist *startsg,
+ int nents)
+{
+ struct scatterlist *dma_sg = startsg; /* pointer to current DMA */
+ int n_mappings = 0;
+ u64 *pdirp = 0;
+ unsigned long dma_offset = 0;
+
+ dma_sg--;
+ while (nents-- > 0) {
+ int cnt = sba_sg_len(startsg);
+ sba_sg_len(startsg) = 0;
+
+#ifdef DEBUG_LARGE_SG_ENTRIES
+ if (dump_run_sg)
+ printk(" %2d : %08lx/%05x %p\n",
+ nents,
+ (unsigned long) sba_sg_iova(startsg), cnt,
+ sba_sg_buffer(startsg)
+ );
+#else
+ DBG_RUN_SG(" %d : %08lx/%05x %p\n",
+ nents,
+ (unsigned long) sba_sg_iova(startsg), cnt,
+ sba_sg_buffer(startsg)
+ );
+#endif
+ /*
+ ** Look for the start of a new DMA stream
+ */
+ if ((u64)sba_sg_iova(startsg) & PIDE_FLAG) {
+ u32 pide = (u64)sba_sg_iova(startsg) & ~PIDE_FLAG;
+ dma_offset = (unsigned long) pide & ~IOVP_MASK;
+ sba_sg_iova(startsg) = 0;
+ dma_sg++;
+ sba_sg_iova(dma_sg) = (char *)(pide | ioc->ibase);
+ pdirp = &(ioc->pdir_base[pide >> IOVP_SHIFT]);
+ n_mappings++;
+ }
+
+ /*
+ ** Look for a VCONTIG chunk
+ */
+ if (cnt) {
+ unsigned long vaddr = (unsigned long) sba_sg_buffer(startsg);
+ ASSERT(pdirp);
+
+ /* Since multiple Vcontig blocks could make up
+ ** one DMA stream, *add* cnt to dma_len.
+ */
+ sba_sg_len(dma_sg) += cnt;
+ cnt += dma_offset;
+ dma_offset=0; /* only want offset on first chunk */
+ cnt = ROUNDUP(cnt, IOVP_SIZE);
+#ifdef CONFIG_PROC_FS
+ ioc->msg_pages += cnt >> IOVP_SHIFT;
+#endif
+ do {
+ sba_io_pdir_entry(pdirp, vaddr);
+ vaddr += IOVP_SIZE;
+ cnt -= IOVP_SIZE;
+ pdirp++;
+ } while (cnt > 0);
+ }
+ startsg++;
+ }
+#ifdef DEBUG_LARGE_SG_ENTRIES
+ dump_run_sg = 0;
+#endif
+ return(n_mappings);
+}
+
+
+/*
+** Two address ranges are DMA contiguous *iff* "end of prev" and
+** "start of next" are both on a page boundry.
+**
+** (shift left is a quick trick to mask off upper bits)
+*/
+#define DMA_CONTIG(__X, __Y) \
+ (((((unsigned long) __X) | ((unsigned long) __Y)) << (BITS_PER_LONG - PAGE_SHIFT)) == 0UL)
+
+
+/**
+ * sba_coalesce_chunks - preprocess the SG list
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @startsg: list of IOVA/size pairs
+ * @nents: number of entries in startsg list
+ *
+ * First pass is to walk the SG list and determine where the breaks are
+ * in the DMA stream. Allocates PDIR entries but does not fill them.
+ * Returns the number of DMA chunks.
+ *
+ * Doing the fill seperate from the coalescing/allocation keeps the
+ * code simpler. Future enhancement could make one pass through
+ * the sglist do both.
+ */
+static SBA_INLINE int
+sba_coalesce_chunks( struct ioc *ioc,
+ struct scatterlist *startsg,
+ int nents)
+{
+ struct scatterlist *vcontig_sg; /* VCONTIG chunk head */
+ unsigned long vcontig_len; /* len of VCONTIG chunk */
+ unsigned long vcontig_end;
+ struct scatterlist *dma_sg; /* next DMA stream head */
+ unsigned long dma_offset, dma_len; /* start/len of DMA stream */
+ int n_mappings = 0;
+
+ while (nents > 0) {
+ unsigned long vaddr = (unsigned long) (startsg->address);
+
+ /*
+ ** Prepare for first/next DMA stream
+ */
+ dma_sg = vcontig_sg = startsg;
+ dma_len = vcontig_len = vcontig_end = sba_sg_len(startsg);
+ vcontig_end += vaddr;
+ dma_offset = vaddr & ~IOVP_MASK;
+
+ /* PARANOID: clear entries */
+ sba_sg_buffer(startsg) = sba_sg_iova(startsg);
+ sba_sg_iova(startsg) = 0;
+ sba_sg_len(startsg) = 0;
+
+ /*
+ ** This loop terminates one iteration "early" since
+ ** it's always looking one "ahead".
+ */
+ while (--nents > 0) {
+ unsigned long vaddr; /* tmp */
+
+ startsg++;
+
+ /* catch brokenness in SCSI layer */
+ ASSERT(startsg->length <= DMA_CHUNK_SIZE);
+
+ /*
+ ** First make sure current dma stream won't
+ ** exceed DMA_CHUNK_SIZE if we coalesce the
+ ** next entry.
+ */
+ if (((dma_len + dma_offset + startsg->length + ~IOVP_MASK) & IOVP_MASK) > DMA_CHUNK_SIZE)
+ break;
+
+ /*
+ ** Then look for virtually contiguous blocks.
+ **
+ ** append the next transaction?
+ */
+ vaddr = (unsigned long) sba_sg_iova(startsg);
+ if (vcontig_end == vaddr)
+ {
+ vcontig_len += sba_sg_len(startsg);
+ vcontig_end += sba_sg_len(startsg);
+ dma_len += sba_sg_len(startsg);
+ sba_sg_buffer(startsg) = (char *)vaddr;
+ sba_sg_iova(startsg) = 0;
+ sba_sg_len(startsg) = 0;
+ continue;
+ }
+
+#ifdef DEBUG_LARGE_SG_ENTRIES
+ dump_run_sg = (vcontig_len > IOVP_SIZE);
+#endif
+
+ /*
+ ** Not virtually contigous.
+ ** Terminate prev chunk.
+ ** Start a new chunk.
+ **
+ ** Once we start a new VCONTIG chunk, dma_offset
+ ** can't change. And we need the offset from the first
+ ** chunk - not the last one. Ergo Successive chunks
+ ** must start on page boundaries and dove tail
+ ** with it's predecessor.
+ */
+ sba_sg_len(vcontig_sg) = vcontig_len;
+
+ vcontig_sg = startsg;
+ vcontig_len = sba_sg_len(startsg);
+
+ /*
+ ** 3) do the entries end/start on page boundaries?
+ ** Don't update vcontig_end until we've checked.
+ */
+ if (DMA_CONTIG(vcontig_end, vaddr))
+ {
+ vcontig_end = vcontig_len + vaddr;
+ dma_len += vcontig_len;
+ sba_sg_buffer(startsg) = (char *)vaddr;
+ sba_sg_iova(startsg) = 0;
+ continue;
+ } else {
+ break;
+ }
+ }
+
+ /*
+ ** End of DMA Stream
+ ** Terminate last VCONTIG block.
+ ** Allocate space for DMA stream.
+ */
+ sba_sg_len(vcontig_sg) = vcontig_len;
+ dma_len = (dma_len + dma_offset + ~IOVP_MASK) & IOVP_MASK;
+ ASSERT(dma_len <= DMA_CHUNK_SIZE);
+ sba_sg_iova(dma_sg) = (char *) (PIDE_FLAG
+ | (sba_alloc_range(ioc, dma_len) << IOVP_SHIFT)
+ | dma_offset);
+ n_mappings++;
+ }
+
+ return n_mappings;
+}
+
+
+/**
+ * sba_map_sg - map Scatter/Gather list
+ * @dev: instance of PCI owned by the driver that's asking.
+ * @sglist: array of buffer/length pairs
+ * @nents: number of entries in list
+ * @direction: R/W or both.
+ *
+ * See Documentation/DMA-mapping.txt
+ */
+int sba_map_sg(struct pci_dev *dev, struct scatterlist *sglist, int nents,
+ int direction)
+{
+ struct ioc *ioc;
+ int coalesced, filled = 0;
+ unsigned long flags;
+#ifdef ALLOW_IOV_BYPASS
+ struct scatterlist *sg;
+#endif
+
+ DBG_RUN_SG("%s() START %d entries\n", __FUNCTION__, nents);
+ ioc = GET_IOC(dev);
+ ASSERT(ioc);
+
+#ifdef ALLOW_IOV_BYPASS
+ if (dev->dma_mask >= ioc->dma_mask) {
+ for (sg = sglist ; filled < nents ; filled++, sg++){
+ sba_sg_buffer(sg) = sba_sg_iova(sg);
+ sba_sg_iova(sg) = (char *)virt_to_phys(sba_sg_buffer(sg));
+ }
+#ifdef CONFIG_PROC_FS
+ spin_lock_irqsave(&ioc->res_lock, flags);
+ ioc->msg_bypass++;
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+#endif
+ return filled;
+ }
+#endif
+ /* Fast path single entry scatterlists. */
+ if (nents == 1) {
+ sba_sg_buffer(sglist) = sba_sg_iova(sglist);
+ sba_sg_iova(sglist) = (char *)sba_map_single(dev,
+ sba_sg_buffer(sglist),
+ sba_sg_len(sglist), direction);
+#ifdef CONFIG_PROC_FS
+ /*
+ ** Should probably do some stats counting, but trying to
+ ** be precise quickly starts wasting CPU time.
+ */
+#endif
+ return 1;
+ }
+
+ spin_lock_irqsave(&ioc->res_lock, flags);
+
+#ifdef ASSERT_PDIR_SANITY
+ if (sba_check_pdir(ioc,"Check before sba_map_sg()"))
+ {
+ sba_dump_sg(ioc, sglist, nents);
+ panic("Check before sba_map_sg()");
+ }
+#endif
+
+#ifdef CONFIG_PROC_FS
+ ioc->msg_calls++;
+#endif
+
+ /*
+ ** First coalesce the chunks and allocate I/O pdir space
+ **
+ ** If this is one DMA stream, we can properly map using the
+ ** correct virtual address associated with each DMA page.
+ ** w/o this association, we wouldn't have coherent DMA!
+ ** Access to the virtual address is what forces a two pass algorithm.
+ */
+ coalesced = sba_coalesce_chunks(ioc, sglist, nents);
+
+ /*
+ ** Program the I/O Pdir
+ **
+ ** map the virtual addresses to the I/O Pdir
+ ** o dma_address will contain the pdir index
+ ** o dma_len will contain the number of bytes to map
+ ** o address contains the virtual address.
+ */
+ filled = sba_fill_pdir(ioc, sglist, nents);
+
+#ifdef ASSERT_PDIR_SANITY
+ if (sba_check_pdir(ioc,"Check after sba_map_sg()"))
+ {
+ sba_dump_sg(ioc, sglist, nents);
+ panic("Check after sba_map_sg()\n");
+ }
+#endif
+
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+
+ ASSERT(coalesced == filled);
+ DBG_RUN_SG("%s() DONE %d mappings\n", __FUNCTION__, filled);
+
+ return filled;
+}
+
+
+/**
+ * sba_unmap_sg - unmap Scatter/Gather list
+ * @dev: instance of PCI owned by the driver that's asking.
+ * @sglist: array of buffer/length pairs
+ * @nents: number of entries in list
+ * @direction: R/W or both.
+ *
+ * See Documentation/DMA-mapping.txt
+ */
+void sba_unmap_sg(struct pci_dev *dev, struct scatterlist *sglist, int nents,
+ int direction)
+{
+ struct ioc *ioc;
+#ifdef ASSERT_PDIR_SANITY
+ unsigned long flags;
+#endif
+
+ DBG_RUN_SG("%s() START %d entries, %p,%x\n",
+ __FUNCTION__, nents, sba_sg_buffer(sglist), sglist->length);
+
+ ioc = GET_IOC(dev);
+ ASSERT(ioc);
+
+#ifdef CONFIG_PROC_FS
+ ioc->usg_calls++;
+#endif
+
+#ifdef ASSERT_PDIR_SANITY
+ spin_lock_irqsave(&ioc->res_lock, flags);
+ sba_check_pdir(ioc,"Check before sba_unmap_sg()");
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+#endif
+
+ while (sba_sg_len(sglist) && nents--) {
+
+ sba_unmap_single(dev, (dma_addr_t)sba_sg_iova(sglist),
+ sba_sg_len(sglist), direction);
+#ifdef CONFIG_PROC_FS
+ /*
+ ** This leaves inconsistent data in the stats, but we can't
+ ** tell which sg lists were mapped by map_single and which
+ ** were coalesced to a single entry. The stats are fun,
+ ** but speed is more important.
+ */
+ ioc->usg_pages += (((u64)sba_sg_iova(sglist) & ~IOVP_MASK) + sba_sg_len(sglist) + IOVP_SIZE - 1) >> PAGE_SHIFT;
+#endif
+ ++sglist;
+ }
+
+ DBG_RUN_SG("%s() DONE (nents %d)\n", __FUNCTION__, nents);
+
+#ifdef ASSERT_PDIR_SANITY
+ spin_lock_irqsave(&ioc->res_lock, flags);
+ sba_check_pdir(ioc,"Check after sba_unmap_sg()");
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+#endif
+
+}
+
+unsigned long
+sba_dma_address (struct scatterlist *sg)
+{
+ return ((unsigned long)sba_sg_iova(sg));
+}
+
+/**************************************************************
+*
+* Initialization and claim
+*
+***************************************************************/
+
+
+static void
+sba_ioc_init(struct sba_device *sba_dev, struct ioc *ioc, int ioc_num)
+{
+ u32 iova_space_size, iova_space_mask;
+ void * pdir_base;
+ int pdir_size, iov_order, tcnfg;
+
+ /*
+ ** Firmware programs the maximum IOV space size into the imask reg
+ */
+ iova_space_size = ~(READ_REG(ioc->ioc_hpa + IOC_IMASK) & 0xFFFFFFFFUL) + 1;
+#ifdef CONFIG_IA64_HP_PROTO
+ if (!iova_space_size)
+ iova_space_size = GB(1);
+#endif
+
+ /*
+ ** iov_order is always based on a 1GB IOVA space since we want to
+ ** turn on the other half for AGP GART.
+ */
+ iov_order = get_order(iova_space_size >> (IOVP_SHIFT-PAGE_SHIFT));
+ ioc->pdir_size = pdir_size = (iova_space_size/IOVP_SIZE) * sizeof(u64);
+
+ DBG_INIT("%s() hpa 0x%lx IOV %dMB (%d bits) PDIR size 0x%0x\n",
+ __FUNCTION__, ioc->ioc_hpa, iova_space_size>>20,
+ iov_order + PAGE_SHIFT, ioc->pdir_size);
+
+ /* FIXME : DMA HINTs not used */
+ ioc->hint_shift_pdir = iov_order + PAGE_SHIFT;
+ ioc->hint_mask_pdir = ~(0x3 << (iov_order + PAGE_SHIFT));
+
+ ioc->pdir_base =
+ pdir_base = (void *) __get_free_pages(GFP_KERNEL, get_order(pdir_size));
+ if (NULL == pdir_base)
+ {
+ panic(__FILE__ ":%s() could not allocate I/O Page Table\n", __FUNCTION__);
+ }
+ memset(pdir_base, 0, pdir_size);
+
+ DBG_INIT("%s() pdir %p size %x hint_shift_pdir %x hint_mask_pdir %lx\n",
+ __FUNCTION__, pdir_base, pdir_size,
+ ioc->hint_shift_pdir, ioc->hint_mask_pdir);
+
+ ASSERT((((unsigned long) pdir_base) & PAGE_MASK) == (unsigned long) pdir_base);
+ WRITE_REG(virt_to_phys(pdir_base), ioc->ioc_hpa + IOC_PDIR_BASE);
+
+ DBG_INIT(" base %p\n", pdir_base);
+
+ /* build IMASK for IOC and Elroy */
+ iova_space_mask = 0xffffffff;
+ iova_space_mask <<= (iov_order + PAGE_SHIFT);
+
+#ifdef CONFIG_IA64_HP_PROTO
+ /*
+ ** REVISIT - this is a kludge, but we won't be supporting anything but
+ ** zx1 2.0 or greater for real. When fw is in shape, ibase will
+ ** be preprogrammed w/ the IOVA hole base and imask will give us
+ ** the size.
+ */
+ if ((sba_dev->hw_rev & 0xFF) < 0x20) {
+ DBG_INIT("%s() Found SBA rev < 2.0, setting IOVA base to 0. This device will not be supported in the future.\n", __FUNCTION__);
+ ioc->ibase = 0x0;
+ } else
+#endif
+ ioc->ibase = READ_REG(ioc->ioc_hpa + IOC_IBASE) & 0xFFFFFFFEUL;
+
+ ioc->imask = iova_space_mask; /* save it */
+
+ DBG_INIT("%s() IOV base 0x%lx mask 0x%0lx\n",
+ __FUNCTION__, ioc->ibase, ioc->imask);
+
+ /*
+ ** FIXME: Hint registers are programmed with default hint
+ ** values during boot, so hints should be sane even if we
+ ** can't reprogram them the way drivers want.
+ */
+
+ WRITE_REG(ioc->imask, ioc->ioc_hpa+IOC_IMASK);
+
+ /*
+ ** Setting the upper bits makes checking for bypass addresses
+ ** a little faster later on.
+ */
+ ioc->imask |= 0xFFFFFFFF00000000UL;
+
+ /* Set I/O PDIR Page size to system page size */
+ switch (PAGE_SHIFT) {
+ case 12: /* 4K */
+ tcnfg = 0;
+ break;
+ case 13: /* 8K */
+ tcnfg = 1;
+ break;
+ case 14: /* 16K */
+ tcnfg = 2;
+ break;
+ case 16: /* 64K */
+ tcnfg = 3;
+ break;
+ }
+ WRITE_REG(tcnfg, ioc->ioc_hpa+IOC_TCNFG);
+
+ /*
+ ** Program the IOC's ibase and enable IOVA translation
+ ** Bit zero == enable bit.
+ */
+ WRITE_REG(ioc->ibase | 1, ioc->ioc_hpa+IOC_IBASE);
+
+ /*
+ ** Clear I/O TLB of any possible entries.
+ ** (Yes. This is a bit paranoid...but so what)
+ */
+ WRITE_REG(0 | 31, ioc->ioc_hpa+IOC_PCOM);
+
+ /*
+ ** If an AGP device is present, only use half of the IOV space
+ ** for PCI DMA. Unfortunately we can't know ahead of time
+ ** whether GART support will actually be used, for now we
+ ** can just key on an AGP device found in the system.
+ ** We program the next pdir index after we stop w/ a key for
+ ** the GART code to handshake on.
+ */
+ if (SBA_GET_AGP(sba_dev)) {
+ DBG_INIT("%s() AGP Device found, reserving 512MB for GART support\n", __FUNCTION__);
+ ioc->pdir_size /= 2;
+ ((u64 *)pdir_base)[PDIR_INDEX(iova_space_size/2)] = 0x0000badbadc0ffeeULL;
+ }
+
+ DBG_INIT("%s() DONE\n", __FUNCTION__);
+}
+
+
+
+/**************************************************************************
+**
+** SBA initialization code (HW and SW)
+**
+** o identify SBA chip itself
+** o FIXME: initialize DMA hints for reasonable defaults
+**
+**************************************************************************/
+
+static void
+sba_hw_init(struct sba_device *sba_dev)
+{
+ int i;
+ int num_ioc;
+ u64 dma_mask;
+ u32 func_id;
+
+ /*
+ ** Identify the SBA so we can set the dma_mask. We can make a virtual
+ ** dma_mask of the memory subsystem such that devices not implmenting
+ ** a full 64bit mask might still be able to bypass efficiently.
+ */
+ func_id = READ_REG(sba_dev->sba_hpa + SBA_FUNC_ID);
+
+ if (func_id == ZX1_FUNC_ID_VALUE) {
+ dma_mask = 0xFFFFFFFFFFUL;
+ } else {
+ dma_mask = 0xFFFFFFFFFFFFFFFFUL;
+ }
+
+ DBG_INIT("%s(): ioc->dma_mask == 0x%lx\n", __FUNCTION__, dma_mask);
+
+ /*
+ ** Leaving in the multiple ioc code from parisc for the future,
+ ** currently there are no muli-ioc mckinley sbas
+ */
+ sba_dev->ioc[0].ioc_hpa = SBA_IOC_OFFSET;
+ num_ioc = 1;
+
+ sba_dev->num_ioc = num_ioc;
+ for (i = 0; i < num_ioc; i++) {
+ sba_dev->ioc[i].dma_mask = dma_mask;
+ sba_dev->ioc[i].ioc_hpa += sba_dev->sba_hpa;
+ sba_ioc_init(sba_dev, &(sba_dev->ioc[i]), i);
+ }
+}
+
+static void
+sba_common_init(struct sba_device *sba_dev)
+{
+ int i;
+
+ /* add this one to the head of the list (order doesn't matter)
+ ** This will be useful for debugging - especially if we get coredumps
+ */
+ sba_dev->next = sba_list;
+ sba_list = sba_dev;
+ sba_count++;
+
+ for(i=0; i< sba_dev->num_ioc; i++) {
+ int res_size;
+
+ /* resource map size dictated by pdir_size */
+ res_size = sba_dev->ioc[i].pdir_size/sizeof(u64); /* entries */
+ res_size >>= 3; /* convert bit count to byte count */
+ DBG_INIT("%s() res_size 0x%x\n",
+ __FUNCTION__, res_size);
+
+ sba_dev->ioc[i].res_size = res_size;
+ sba_dev->ioc[i].res_map = (char *) __get_free_pages(GFP_KERNEL, get_order(res_size));
+
+ if (NULL == sba_dev->ioc[i].res_map)
+ {
+ panic(__FILE__ ":%s() could not allocate resource map\n", __FUNCTION__ );
+ }
+
+ memset(sba_dev->ioc[i].res_map, 0, res_size);
+ /* next available IOVP - circular search */
+ if ((sba_dev->hw_rev & 0xFF) >= 0x20) {
+ sba_dev->ioc[i].res_hint = (unsigned long *)
+ sba_dev->ioc[i].res_map;
+ } else {
+ u64 reserved_iov;
+
+ /* Yet another 1.x hack */
+ printk("zx1 1.x: Starting resource hint offset into IOV space to avoid initial zero value IOVA\n");
+ sba_dev->ioc[i].res_hint = (unsigned long *)
+ &(sba_dev->ioc[i].res_map[L1_CACHE_BYTES]);
+
+ sba_dev->ioc[i].res_map[0] = 0x1;
+ sba_dev->ioc[i].pdir_base[0] = 0x8000badbadc0ffeeULL;
+
+ for (reserved_iov = 0xA0000 ; reserved_iov < 0xC0000 ; reserved_iov += IOVP_SIZE) {
+ u64 *res_ptr = sba_dev->ioc[i].res_map;
+ int index = PDIR_INDEX(reserved_iov);
+ int res_word;
+ u64 mask;
+
+ res_word = (int)(index / BITS_PER_LONG);
+ mask = 0x1UL << (index - (res_word * BITS_PER_LONG));
+ res_ptr[res_word] |= mask;
+ sba_dev->ioc[i].pdir_base[PDIR_INDEX(reserved_iov)] = (0x80000000000000FFULL | reserved_iov);
+
+ }
+ }
+
+#ifdef ASSERT_PDIR_SANITY
+ /* Mark first bit busy - ie no IOVA 0 */
+ sba_dev->ioc[i].res_map[0] = 0x1;
+ sba_dev->ioc[i].pdir_base[0] = 0x8000badbadc0ffeeULL;
+#endif
+
+ DBG_INIT("%s() %d res_map %x %p\n", __FUNCTION__,
+ i, res_size, (void *)sba_dev->ioc[i].res_map);
+ }
+
+ sba_dev->sba_lock = SPIN_LOCK_UNLOCKED;
+}
+
+#ifdef CONFIG_PROC_FS
+static int sba_proc_info(char *buf, char **start, off_t offset, int len)
+{
+ struct sba_device *sba_dev = sba_list;
+ struct ioc *ioc = &sba_dev->ioc[0]; /* FIXME: Multi-IOC support! */
+ int total_pages = (int) (ioc->res_size << 3); /* 8 bits per byte */
+ unsigned long i = 0, avg = 0, min, max;
+
+ sprintf(buf, "%s rev %d.%d\n",
+ "Hewlett Packard zx1 SBA",
+ ((sba_dev->hw_rev >> 4) & 0xF),
+ (sba_dev->hw_rev & 0xF)
+ );
+ sprintf(buf, "%sIO PDIR size : %d bytes (%d entries)\n",
+ buf,
+ (int) ((ioc->res_size << 3) * sizeof(u64)), /* 8 bits/byte */
+ total_pages);
+
+ sprintf(buf, "%sIO PDIR entries : %ld free %ld used (%d%%)\n", buf,
+ total_pages - ioc->used_pages, ioc->used_pages,
+ (int) (ioc->used_pages * 100 / total_pages));
+
+ sprintf(buf, "%sResource bitmap : %d bytes (%d pages)\n",
+ buf, ioc->res_size, ioc->res_size << 3); /* 8 bits per byte */
+
+ min = max = ioc->avg_search[0];
+ for (i = 0; i < SBA_SEARCH_SAMPLE; i++) {
+ avg += ioc->avg_search[i];
+ if (ioc->avg_search[i] > max) max = ioc->avg_search[i];
+ if (ioc->avg_search[i] < min) min = ioc->avg_search[i];
+ }
+ avg /= SBA_SEARCH_SAMPLE;
+ sprintf(buf, "%s Bitmap search : %ld/%ld/%ld (min/avg/max CPU Cycles)\n",
+ buf, min, avg, max);
+
+ sprintf(buf, "%spci_map_single(): %12ld calls %12ld pages (avg %d/1000)\n",
+ buf, ioc->msingle_calls, ioc->msingle_pages,
+ (int) ((ioc->msingle_pages * 1000)/ioc->msingle_calls));
+#ifdef ALLOW_IOV_BYPASS
+ sprintf(buf, "%spci_map_single(): %12ld bypasses\n",
+ buf, ioc->msingle_bypass);
+#endif
+
+ sprintf(buf, "%spci_unmap_single: %12ld calls %12ld pages (avg %d/1000)\n",
+ buf, ioc->usingle_calls, ioc->usingle_pages,
+ (int) ((ioc->usingle_pages * 1000)/ioc->usingle_calls));
+#ifdef ALLOW_IOV_BYPASS
+ sprintf(buf, "%spci_unmap_single: %12ld bypasses\n",
+ buf, ioc->usingle_bypass);
+#endif
+
+ sprintf(buf, "%spci_map_sg() : %12ld calls %12ld pages (avg %d/1000)\n",
+ buf, ioc->msg_calls, ioc->msg_pages,
+ (int) ((ioc->msg_pages * 1000)/ioc->msg_calls));
+#ifdef ALLOW_IOV_BYPASS
+ sprintf(buf, "%spci_map_sg() : %12ld bypasses\n",
+ buf, ioc->msg_bypass);
+#endif
+
+ sprintf(buf, "%spci_unmap_sg() : %12ld calls %12ld pages (avg %d/1000)\n",
+ buf, ioc->usg_calls, ioc->usg_pages,
+ (int) ((ioc->usg_pages * 1000)/ioc->usg_calls));
+
+ return strlen(buf);
+}
+
+static int
+sba_resource_map(char *buf, char **start, off_t offset, int len)
+{
+ struct ioc *ioc = sba_list->ioc; /* FIXME: Multi-IOC support! */
+ unsigned int *res_ptr = (unsigned int *)ioc->res_map;
+ int i;
+
+ buf[0] = '\0';
+ for(i = 0; i < (ioc->res_size / sizeof(unsigned int)); ++i, ++res_ptr) {
+ if ((i & 7) == 0)
+ strcat(buf,"\n ");
+ sprintf(buf, "%s %08x", buf, *res_ptr);
+ }
+ strcat(buf, "\n");
+
+ return strlen(buf);
+}
+#endif
+
+/*
+** Determine if sba should claim this chip (return 0) or not (return 1).
+** If so, initialize the chip and tell other partners in crime they
+** have work to do.
+*/
+void __init sba_init(void)
+{
+ struct sba_device *sba_dev;
+ u32 func_id, hw_rev;
+ u32 *func_offset = NULL;
+ int i, agp_found = 0;
+ static char sba_rev[6];
+ struct pci_dev *device = NULL;
+ u64 hpa = 0;
+
+ if (!(device = pci_find_device(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_ZX1_SBA, NULL)))
+ return;
+
+ for (i = 0; i < PCI_NUM_RESOURCES; i++) {
+ if (pci_resource_flags(device, i) == IORESOURCE_MEM) {
+ hpa = ioremap(pci_resource_start(device, i),
+ pci_resource_len(device, i));
+ break;
+ }
+ }
+
+ func_id = READ_REG(hpa + SBA_FUNC_ID);
+
+ if (func_id == ZX1_FUNC_ID_VALUE) {
+ (void)strcpy(sba_rev, "zx1");
+ func_offset = zx1_func_offsets;
+ } else {
+ return;
+ }
+
+ /* Read HW Rev First */
+ hw_rev = READ_REG(hpa + SBA_FCLASS) & 0xFFUL;
+
+ /*
+ * Not all revision registers of the chipset are updated on every
+ * turn. Must scan through all functions looking for the highest rev
+ */
+ if (func_offset) {
+ for (i = 0 ; func_offset[i] != -1 ; i++) {
+ u32 func_rev;
+
+ func_rev = READ_REG(hpa + SBA_FCLASS + func_offset[i]) & 0xFFUL;
+ DBG_INIT("%s() func offset: 0x%x rev: 0x%x\n",
+ __FUNCTION__, func_offset[i], func_rev);
+ if (func_rev > hw_rev)
+ hw_rev = func_rev;
+ }
+ }
+
+ printk(KERN_INFO "%s found %s %d.%d at %s, HPA 0x%lx\n", DRIVER_NAME,
+ sba_rev, ((hw_rev >> 4) & 0xF), (hw_rev & 0xF),
+ device->slot_name, hpa);
+
+ if ((hw_rev & 0xFF) < 0x20) {
+ printk(KERN_INFO "%s WARNING rev 2.0 or greater will be required for IO MMU support in the future\n", DRIVER_NAME);
+#ifndef CONFIG_IA64_HP_PROTO
+ panic("%s: CONFIG_IA64_HP_PROTO MUST be enabled to support SBA rev less than 2.0", DRIVER_NAME);
+#endif
+ }
+
+ sba_dev = kmalloc(sizeof(struct sba_device), GFP_KERNEL);
+ if (NULL == sba_dev) {
+ printk(KERN_ERR DRIVER_NAME " - couldn't alloc sba_device\n");
+ return;
+ }
+
+ memset(sba_dev, 0, sizeof(struct sba_device));
+
+ for(i=0; iioc[i].res_lock));
+
+ sba_dev->hw_rev = hw_rev;
+ sba_dev->sba_hpa = hpa;
+
+ /*
+ * We need to check for an AGP device, if we find one, then only
+ * use part of the IOVA space for PCI DMA, the rest is for GART.
+ * REVISIT for multiple IOC.
+ */
+ pci_for_each_dev(device)
+ agp_found |= pci_find_capability(device, PCI_CAP_ID_AGP);
+
+ if (agp_found && reserve_sba_gart)
+ SBA_SET_AGP(sba_dev);
+
+ sba_hw_init(sba_dev);
+ sba_common_init(sba_dev);
+
+#ifdef CONFIG_PROC_FS
+ {
+ struct proc_dir_entry * proc_mckinley_root;
+
+ proc_mckinley_root = proc_mkdir("bus/mckinley",0);
+ create_proc_info_entry(sba_rev, 0, proc_mckinley_root, sba_proc_info);
+ create_proc_info_entry("bitmap", 0, proc_mckinley_root, sba_resource_map);
+ }
+#endif
+}
+
+static int __init
+nosbagart (char *str)
+{
+ reserve_sba_gart = 0;
+ return 1;
+}
+
+__setup("nosbagart",nosbagart);
+
+EXPORT_SYMBOL(sba_init);
+EXPORT_SYMBOL(sba_map_single);
+EXPORT_SYMBOL(sba_unmap_single);
+EXPORT_SYMBOL(sba_map_sg);
+EXPORT_SYMBOL(sba_unmap_sg);
+EXPORT_SYMBOL(sba_dma_address);
+EXPORT_SYMBOL(sba_alloc_consistent);
+EXPORT_SYMBOL(sba_free_consistent);
+/*
+** IA64 System Bus Adapter (SBA) I/O MMU manager
+**
+** (c) Copyright 2002 Alex Williamson
+** (c) Copyright 2002 Hewlett-Packard Company
+**
+** Portions (c) 2000 Grant Grundler (from parisc I/O MMU code)
+** Portions (c) 1999 Dave S. Miller (from sparc64 I/O MMU code)
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+**
+** This module initializes the IOC (I/O Controller) found on HP
+** McKinley machines and their successors.
+**
+*/
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+#include /* ia64_get_itc() */
+#include
+#include /* PAGE_OFFSET */
+#include
+
+
+#define DRIVER_NAME "SBA"
+
+#ifndef CONFIG_IA64_HP_PROTO
+#define ALLOW_IOV_BYPASS
+#endif
+#define ENABLE_MARK_CLEAN
+/*
+** The number of debug flags is a clue - this code is fragile.
+*/
+#undef DEBUG_SBA_INIT
+#undef DEBUG_SBA_RUN
+#undef DEBUG_SBA_RUN_SG
+#undef DEBUG_SBA_RESOURCE
+#undef ASSERT_PDIR_SANITY
+#undef DEBUG_LARGE_SG_ENTRIES
+#undef DEBUG_BYPASS
+
+#define SBA_INLINE __inline__
+/* #define SBA_INLINE */
+
+#ifdef DEBUG_SBA_INIT
+#define DBG_INIT(x...) printk(x)
+#else
+#define DBG_INIT(x...)
+#endif
+
+#ifdef DEBUG_SBA_RUN
+#define DBG_RUN(x...) printk(x)
+#else
+#define DBG_RUN(x...)
+#endif
+
+#ifdef DEBUG_SBA_RUN_SG
+#define DBG_RUN_SG(x...) printk(x)
+#else
+#define DBG_RUN_SG(x...)
+#endif
+
+
+#ifdef DEBUG_SBA_RESOURCE
+#define DBG_RES(x...) printk(x)
+#else
+#define DBG_RES(x...)
+#endif
+
+#ifdef DEBUG_BYPASS
+#define DBG_BYPASS(x...) printk(x)
+#else
+#define DBG_BYPASS(x...)
+#endif
+
+#ifdef ASSERT_PDIR_SANITY
+#define ASSERT(expr) \
+ if(!(expr)) { \
+ printk( "\n" __FILE__ ":%d: Assertion " #expr " failed!\n",__LINE__); \
+ panic(#expr); \
+ }
+#else
+#define ASSERT(expr)
+#endif
+
+#define KB(x) ((x) * 1024)
+#define MB(x) (KB (KB (x)))
+#define GB(x) (MB (KB (x)))
+
+/*
+** The number of pdir entries to "free" before issueing
+** a read to PCOM register to flush out PCOM writes.
+** Interacts with allocation granularity (ie 4 or 8 entries
+** allocated and free'd/purged at a time might make this
+** less interesting).
+*/
+#define DELAYED_RESOURCE_CNT 16
+
+#define DEFAULT_DMA_HINT_REG 0
+
+#define ZX1_FUNC_ID_VALUE ((PCI_DEVICE_ID_HP_ZX1_SBA << 16) | PCI_VENDOR_ID_HP)
+#define ZX1_MC_ID ((PCI_DEVICE_ID_HP_ZX1_MC << 16) | PCI_VENDOR_ID_HP)
+
+#define SBA_FUNC_ID 0x0000 /* function id */
+#define SBA_FCLASS 0x0008 /* function class, bist, header, rev... */
+
+#define SBA_FUNC_SIZE 0x10000 /* SBA configuration function reg set */
+
+unsigned int __initdata zx1_func_offsets[] = {0x1000, 0x4000, 0x8000,
+ 0x9000, 0xa000, -1};
+
+#define SBA_IOC_OFFSET 0x1000
+
+#define MAX_IOC 1 /* we only have 1 for now*/
+
+#define IOC_IBASE 0x300 /* IO TLB */
+#define IOC_IMASK 0x308
+#define IOC_PCOM 0x310
+#define IOC_TCNFG 0x318
+#define IOC_PDIR_BASE 0x320
+
+#define IOC_IOVA_SPACE_BASE 0x40000000 /* IOVA ranges start at 1GB */
+
+/*
+** IOC supports 4/8/16/64KB page sizes (see TCNFG register)
+** It's safer (avoid memory corruption) to keep DMA page mappings
+** equivalently sized to VM PAGE_SIZE.
+**
+** We really can't avoid generating a new mapping for each
+** page since the Virtual Coherence Index has to be generated
+** and updated for each page.
+**
+** IOVP_SIZE could only be greater than PAGE_SIZE if we are
+** confident the drivers really only touch the next physical
+** page iff that driver instance owns it.
+*/
+#define IOVP_SIZE PAGE_SIZE
+#define IOVP_SHIFT PAGE_SHIFT
+#define IOVP_MASK PAGE_MASK
+
+struct ioc {
+ unsigned long ioc_hpa; /* I/O MMU base address */
+ char *res_map; /* resource map, bit == pdir entry */
+ u64 *pdir_base; /* physical base address */
+ unsigned long ibase; /* pdir IOV Space base */
+ unsigned long imask; /* pdir IOV Space mask */
+
+ unsigned long *res_hint; /* next avail IOVP - circular search */
+ spinlock_t res_lock;
+ unsigned long hint_mask_pdir; /* bits used for DMA hints */
+ unsigned int res_bitshift; /* from the RIGHT! */
+ unsigned int res_size; /* size of resource map in bytes */
+ unsigned int hint_shift_pdir;
+ unsigned long dma_mask;
+#if DELAYED_RESOURCE_CNT > 0
+ int saved_cnt;
+ struct sba_dma_pair {
+ dma_addr_t iova;
+ size_t size;
+ } saved[DELAYED_RESOURCE_CNT];
+#endif
+
+#ifdef CONFIG_PROC_FS
+#define SBA_SEARCH_SAMPLE 0x100
+ unsigned long avg_search[SBA_SEARCH_SAMPLE];
+ unsigned long avg_idx; /* current index into avg_search */
+ unsigned long used_pages;
+ unsigned long msingle_calls;
+ unsigned long msingle_pages;
+ unsigned long msg_calls;
+ unsigned long msg_pages;
+ unsigned long usingle_calls;
+ unsigned long usingle_pages;
+ unsigned long usg_calls;
+ unsigned long usg_pages;
+#ifdef ALLOW_IOV_BYPASS
+ unsigned long msingle_bypass;
+ unsigned long usingle_bypass;
+ unsigned long msg_bypass;
+#endif
+#endif
+
+ /* STUFF We don't need in performance path */
+ unsigned int pdir_size; /* in bytes, determined by IOV Space size */
+};
+
+struct sba_device {
+ struct sba_device *next; /* list of SBA's in system */
+ const char *name;
+ unsigned long sba_hpa; /* base address */
+ spinlock_t sba_lock;
+ unsigned int flags; /* state/functionality enabled */
+ unsigned int hw_rev; /* HW revision of chip */
+
+ unsigned int num_ioc; /* number of on-board IOC's */
+ struct ioc ioc[MAX_IOC];
+};
+
+
+static struct sba_device *sba_list;
+static int sba_count;
+static int reserve_sba_gart = 1;
+
+#define sba_sg_iova(sg) (sg->address)
+#define sba_sg_len(sg) (sg->length)
+#define sba_sg_buffer(sg) (sg->orig_address)
+
+/* REVISIT - fix me for multiple SBAs/IOCs */
+#define GET_IOC(dev) (sba_list->ioc)
+#define SBA_SET_AGP(sba_dev) (sba_dev->flags |= 0x1)
+#define SBA_GET_AGP(sba_dev) (sba_dev->flags & 0x1)
+
+/*
+** DMA_CHUNK_SIZE is used by the SCSI mid-layer to break up
+** (or rather not merge) DMA's into managable chunks.
+** On parisc, this is more of the software/tuning constraint
+** rather than the HW. I/O MMU allocation alogorithms can be
+** faster with smaller size is (to some degree).
+*/
+#define DMA_CHUNK_SIZE (BITS_PER_LONG*PAGE_SIZE)
+
+/* Looks nice and keeps the compiler happy */
+#define SBA_DEV(d) ((struct sba_device *) (d))
+
+#define ROUNDUP(x,y) ((x + ((y)-1)) & ~((y)-1))
+
+/************************************
+** SBA register read and write support
+**
+** BE WARNED: register writes are posted.
+** (ie follow writes which must reach HW with a read)
+**
+*/
+#define READ_REG(addr) __raw_readq(addr)
+#define WRITE_REG(val, addr) __raw_writeq(val, addr)
+
+#ifdef DEBUG_SBA_INIT
+
+/**
+ * sba_dump_tlb - debugging only - print IOMMU operating parameters
+ * @hpa: base address of the IOMMU
+ *
+ * Print the size/location of the IO MMU PDIR.
+ */
+static void
+sba_dump_tlb(char *hpa)
+{
+ DBG_INIT("IO TLB at 0x%p\n", (void *)hpa);
+ DBG_INIT("IOC_IBASE : %016lx\n", READ_REG(hpa+IOC_IBASE));
+ DBG_INIT("IOC_IMASK : %016lx\n", READ_REG(hpa+IOC_IMASK));
+ DBG_INIT("IOC_TCNFG : %016lx\n", READ_REG(hpa+IOC_TCNFG));
+ DBG_INIT("IOC_PDIR_BASE: %016lx\n", READ_REG(hpa+IOC_PDIR_BASE));
+ DBG_INIT("\n");
+}
+#endif
+
+
+#ifdef ASSERT_PDIR_SANITY
+
+/**
+ * sba_dump_pdir_entry - debugging only - print one IOMMU PDIR entry
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @msg: text to print ont the output line.
+ * @pide: pdir index.
+ *
+ * Print one entry of the IO MMU PDIR in human readable form.
+ */
+static void
+sba_dump_pdir_entry(struct ioc *ioc, char *msg, uint pide)
+{
+ /* start printing from lowest pde in rval */
+ u64 *ptr = &(ioc->pdir_base[pide & ~(BITS_PER_LONG - 1)]);
+ unsigned long *rptr = (unsigned long *) &(ioc->res_map[(pide >>3) & ~(sizeof(unsigned long) - 1)]);
+ uint rcnt;
+
+ /* printk(KERN_DEBUG "SBA: %s rp %p bit %d rval 0x%lx\n", */
+ printk("SBA: %s rp %p bit %d rval 0x%lx\n",
+ msg, rptr, pide & (BITS_PER_LONG - 1), *rptr);
+
+ rcnt = 0;
+ while (rcnt < BITS_PER_LONG) {
+ printk("%s %2d %p %016Lx\n",
+ (rcnt == (pide & (BITS_PER_LONG - 1)))
+ ? " -->" : " ",
+ rcnt, ptr, *ptr );
+ rcnt++;
+ ptr++;
+ }
+ printk("%s", msg);
+}
+
+
+/**
+ * sba_check_pdir - debugging only - consistency checker
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @msg: text to print ont the output line.
+ *
+ * Verify the resource map and pdir state is consistent
+ */
+static int
+sba_check_pdir(struct ioc *ioc, char *msg)
+{
+ u64 *rptr_end = (u64 *) &(ioc->res_map[ioc->res_size]);
+ u64 *rptr = (u64 *) ioc->res_map; /* resource map ptr */
+ u64 *pptr = ioc->pdir_base; /* pdir ptr */
+ uint pide = 0;
+
+ while (rptr < rptr_end) {
+ u64 rval;
+ int rcnt; /* number of bits we might check */
+
+ rval = *rptr;
+ rcnt = 64;
+
+ while (rcnt) {
+ /* Get last byte and highest bit from that */
+ u32 pde = ((u32)((*pptr >> (63)) & 0x1));
+ if ((rval & 0x1) ^ pde)
+ {
+ /*
+ ** BUMMER! -- res_map != pdir --
+ ** Dump rval and matching pdir entries
+ */
+ sba_dump_pdir_entry(ioc, msg, pide);
+ return(1);
+ }
+ rcnt--;
+ rval >>= 1; /* try the next bit */
+ pptr++;
+ pide++;
+ }
+ rptr++; /* look at next word of res_map */
+ }
+ /* It'd be nice if we always got here :^) */
+ return 0;
+}
+
+
+/**
+ * sba_dump_sg - debugging only - print Scatter-Gather list
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @startsg: head of the SG list
+ * @nents: number of entries in SG list
+ *
+ * print the SG list so we can verify it's correct by hand.
+ */
+static void
+sba_dump_sg( struct ioc *ioc, struct scatterlist *startsg, int nents)
+{
+ while (nents-- > 0) {
+ printk(" %d : %08lx/%05x %p\n",
+ nents,
+ (unsigned long) sba_sg_iova(startsg),
+ sba_sg_len(startsg),
+ sba_sg_buffer(startsg));
+ startsg++;
+ }
+}
+static void
+sba_check_sg( struct ioc *ioc, struct scatterlist *startsg, int nents)
+{
+ struct scatterlist *the_sg = startsg;
+ int the_nents = nents;
+
+ while (the_nents-- > 0) {
+ if (sba_sg_buffer(the_sg) == 0x0UL)
+ sba_dump_sg(NULL, startsg, nents);
+ the_sg++;
+ }
+}
+
+#endif /* ASSERT_PDIR_SANITY */
+
+
+
+
+/**************************************************************
+*
+* I/O Pdir Resource Management
+*
+* Bits set in the resource map are in use.
+* Each bit can represent a number of pages.
+* LSbs represent lower addresses (IOVA's).
+*
+***************************************************************/
+#define PAGES_PER_RANGE 1 /* could increase this to 4 or 8 if needed */
+
+/* Convert from IOVP to IOVA and vice versa. */
+#define SBA_IOVA(ioc,iovp,offset,hint_reg) ((ioc->ibase) | (iovp) | (offset) | ((hint_reg)<<(ioc->hint_shift_pdir)))
+#define SBA_IOVP(ioc,iova) (((iova) & ioc->hint_mask_pdir) & ~(ioc->ibase))
+
+/* FIXME : review these macros to verify correctness and usage */
+#define PDIR_INDEX(iovp) ((iovp)>>IOVP_SHIFT)
+
+#define RESMAP_MASK(n) ~(~0UL << (n))
+#define RESMAP_IDX_MASK (sizeof(unsigned long) - 1)
+
+
+/**
+ * sba_search_bitmap - find free space in IO PDIR resource bitmap
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @bits_wanted: number of entries we need.
+ *
+ * Find consecutive free bits in resource bitmap.
+ * Each bit represents one entry in the IO Pdir.
+ * Cool perf optimization: search for log2(size) bits at a time.
+ */
+static SBA_INLINE unsigned long
+sba_search_bitmap(struct ioc *ioc, unsigned long bits_wanted)
+{
+ unsigned long *res_ptr = ioc->res_hint;
+ unsigned long *res_end = (unsigned long *) &(ioc->res_map[ioc->res_size]);
+ unsigned long pide = ~0UL;
+
+ ASSERT(((unsigned long) ioc->res_hint & (sizeof(unsigned long) - 1UL)) == 0);
+ ASSERT(res_ptr < res_end);
+ if (bits_wanted > (BITS_PER_LONG/2)) {
+ /* Search word at a time - no mask needed */
+ for(; res_ptr < res_end; ++res_ptr) {
+ if (*res_ptr == 0) {
+ *res_ptr = RESMAP_MASK(bits_wanted);
+ pide = ((unsigned long)res_ptr - (unsigned long)ioc->res_map);
+ pide <<= 3; /* convert to bit address */
+ break;
+ }
+ }
+ /* point to the next word on next pass */
+ res_ptr++;
+ ioc->res_bitshift = 0;
+ } else {
+ /*
+ ** Search the resource bit map on well-aligned values.
+ ** "o" is the alignment.
+ ** We need the alignment to invalidate I/O TLB using
+ ** SBA HW features in the unmap path.
+ */
+ unsigned long o = 1 << get_order(bits_wanted << PAGE_SHIFT);
+ uint bitshiftcnt = ROUNDUP(ioc->res_bitshift, o);
+ unsigned long mask;
+
+ if (bitshiftcnt >= BITS_PER_LONG) {
+ bitshiftcnt = 0;
+ res_ptr++;
+ }
+ mask = RESMAP_MASK(bits_wanted) << bitshiftcnt;
+
+ DBG_RES("%s() o %ld %p", __FUNCTION__, o, res_ptr);
+ while(res_ptr < res_end)
+ {
+ DBG_RES(" %p %lx %lx\n", res_ptr, mask, *res_ptr);
+ ASSERT(0 != mask);
+ if(0 == ((*res_ptr) & mask)) {
+ *res_ptr |= mask; /* mark resources busy! */
+ pide = ((unsigned long)res_ptr - (unsigned long)ioc->res_map);
+ pide <<= 3; /* convert to bit address */
+ pide += bitshiftcnt;
+ break;
+ }
+ mask <<= o;
+ bitshiftcnt += o;
+ if (0 == mask) {
+ mask = RESMAP_MASK(bits_wanted);
+ bitshiftcnt=0;
+ res_ptr++;
+ }
+ }
+ /* look in the same word on the next pass */
+ ioc->res_bitshift = bitshiftcnt + bits_wanted;
+ }
+
+ /* wrapped ? */
+ if (res_end <= res_ptr) {
+ ioc->res_hint = (unsigned long *) ioc->res_map;
+ ioc->res_bitshift = 0;
+ } else {
+ ioc->res_hint = res_ptr;
+ }
+ return (pide);
+}
+
+
+/**
+ * sba_alloc_range - find free bits and mark them in IO PDIR resource bitmap
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @size: number of bytes to create a mapping for
+ *
+ * Given a size, find consecutive unmarked and then mark those bits in the
+ * resource bit map.
+ */
+static int
+sba_alloc_range(struct ioc *ioc, size_t size)
+{
+ unsigned int pages_needed = size >> IOVP_SHIFT;
+#ifdef CONFIG_PROC_FS
+ unsigned long itc_start = ia64_get_itc();
+#endif
+ unsigned long pide;
+
+ ASSERT(pages_needed);
+ ASSERT((pages_needed * IOVP_SIZE) <= DMA_CHUNK_SIZE);
+ ASSERT(pages_needed <= BITS_PER_LONG);
+ ASSERT(0 == (size & ~IOVP_MASK));
+
+ /*
+ ** "seek and ye shall find"...praying never hurts either...
+ */
+
+ pide = sba_search_bitmap(ioc, pages_needed);
+ if (pide >= (ioc->res_size << 3)) {
+ pide = sba_search_bitmap(ioc, pages_needed);
+ if (pide >= (ioc->res_size << 3))
+ panic(__FILE__ ": I/O MMU @ %lx is out of mapping resources\n", ioc->ioc_hpa);
+ }
+
+#ifdef ASSERT_PDIR_SANITY
+ /* verify the first enable bit is clear */
+ if(0x00 != ((u8 *) ioc->pdir_base)[pide*sizeof(u64) + 7]) {
+ sba_dump_pdir_entry(ioc, "sba_search_bitmap() botched it?", pide);
+ }
+#endif
+
+ DBG_RES("%s(%x) %d -> %lx hint %x/%x\n",
+ __FUNCTION__, size, pages_needed, pide,
+ (uint) ((unsigned long) ioc->res_hint - (unsigned long) ioc->res_map),
+ ioc->res_bitshift );
+
+#ifdef CONFIG_PROC_FS
+ {
+ unsigned long itc_end = ia64_get_itc();
+ unsigned long tmp = itc_end - itc_start;
+ /* check for roll over */
+ itc_start = (itc_end < itc_start) ? -(tmp) : (tmp);
+ }
+ ioc->avg_search[ioc->avg_idx++] = itc_start;
+ ioc->avg_idx &= SBA_SEARCH_SAMPLE - 1;
+
+ ioc->used_pages += pages_needed;
+#endif
+
+ return (pide);
+}
+
+
+/**
+ * sba_free_range - unmark bits in IO PDIR resource bitmap
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @iova: IO virtual address which was previously allocated.
+ * @size: number of bytes to create a mapping for
+ *
+ * clear bits in the ioc's resource map
+ */
+static SBA_INLINE void
+sba_free_range(struct ioc *ioc, dma_addr_t iova, size_t size)
+{
+ unsigned long iovp = SBA_IOVP(ioc, iova);
+ unsigned int pide = PDIR_INDEX(iovp);
+ unsigned int ridx = pide >> 3; /* convert bit to byte address */
+ unsigned long *res_ptr = (unsigned long *) &((ioc)->res_map[ridx & ~RESMAP_IDX_MASK]);
+
+ int bits_not_wanted = size >> IOVP_SHIFT;
+
+ /* 3-bits "bit" address plus 2 (or 3) bits for "byte" == bit in word */
+ unsigned long m = RESMAP_MASK(bits_not_wanted) << (pide & (BITS_PER_LONG - 1));
+
+ DBG_RES("%s( ,%x,%x) %x/%lx %x %p %lx\n",
+ __FUNCTION__, (uint) iova, size,
+ bits_not_wanted, m, pide, res_ptr, *res_ptr);
+
+#ifdef CONFIG_PROC_FS
+ ioc->used_pages -= bits_not_wanted;
+#endif
+
+ ASSERT(m != 0);
+ ASSERT(bits_not_wanted);
+ ASSERT((bits_not_wanted * IOVP_SIZE) <= DMA_CHUNK_SIZE);
+ ASSERT(bits_not_wanted <= BITS_PER_LONG);
+ ASSERT((*res_ptr & m) == m); /* verify same bits are set */
+ *res_ptr &= ~m;
+}
+
+
+/**************************************************************
+*
+* "Dynamic DMA Mapping" support (aka "Coherent I/O")
+*
+***************************************************************/
+
+#define SBA_DMA_HINT(ioc, val) ((val) << (ioc)->hint_shift_pdir)
+
+
+/**
+ * sba_io_pdir_entry - fill in one IO PDIR entry
+ * @pdir_ptr: pointer to IO PDIR entry
+ * @vba: Virtual CPU address of buffer to map
+ *
+ * SBA Mapping Routine
+ *
+ * Given a virtual address (vba, arg1) sba_io_pdir_entry()
+ * loads the I/O PDIR entry pointed to by pdir_ptr (arg0).
+ * Each IO Pdir entry consists of 8 bytes as shown below
+ * (LSB == bit 0):
+ *
+ * 63 40 11 7 0
+ * +-+---------------------+----------------------------------+----+--------+
+ * |V| U | PPN[39:12] | U | FF |
+ * +-+---------------------+----------------------------------+----+--------+
+ *
+ * V == Valid Bit
+ * U == Unused
+ * PPN == Physical Page Number
+ *
+ * The physical address fields are filled with the results of virt_to_phys()
+ * on the vba.
+ */
+
+#if 1
+#define sba_io_pdir_entry(pdir_ptr, vba) *pdir_ptr = ((vba & ~0xE000000000000FFFULL) | 0x80000000000000FFULL)
+#else
+void SBA_INLINE
+sba_io_pdir_entry(u64 *pdir_ptr, unsigned long vba)
+{
+ *pdir_ptr = ((vba & ~0xE000000000000FFFULL) | 0x80000000000000FFULL);
+}
+#endif
+
+#ifdef ENABLE_MARK_CLEAN
+/**
+ * Since DMA is i-cache coherent, any (complete) pages that were written via
+ * DMA can be marked as "clean" so that update_mmu_cache() doesn't have to
+ * flush them when they get mapped into an executable vm-area.
+ */
+static void
+mark_clean (void *addr, size_t size)
+{
+ unsigned long pg_addr, end;
+
+ pg_addr = PAGE_ALIGN((unsigned long) addr);
+ end = (unsigned long) addr + size;
+ while (pg_addr + PAGE_SIZE <= end) {
+ struct page *page = virt_to_page(pg_addr);
+ set_bit(PG_arch_1, &page->flags);
+ pg_addr += PAGE_SIZE;
+ }
+}
+#endif
+
+/**
+ * sba_mark_invalid - invalidate one or more IO PDIR entries
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @iova: IO Virtual Address mapped earlier
+ * @byte_cnt: number of bytes this mapping covers.
+ *
+ * Marking the IO PDIR entry(ies) as Invalid and invalidate
+ * corresponding IO TLB entry. The PCOM (Purge Command Register)
+ * is to purge stale entries in the IO TLB when unmapping entries.
+ *
+ * The PCOM register supports purging of multiple pages, with a minium
+ * of 1 page and a maximum of 2GB. Hardware requires the address be
+ * aligned to the size of the range being purged. The size of the range
+ * must be a power of 2. The "Cool perf optimization" in the
+ * allocation routine helps keep that true.
+ */
+static SBA_INLINE void
+sba_mark_invalid(struct ioc *ioc, dma_addr_t iova, size_t byte_cnt)
+{
+ u32 iovp = (u32) SBA_IOVP(ioc,iova);
+
+ int off = PDIR_INDEX(iovp);
+
+ /* Must be non-zero and rounded up */
+ ASSERT(byte_cnt > 0);
+ ASSERT(0 == (byte_cnt & ~IOVP_MASK));
+
+#ifdef ASSERT_PDIR_SANITY
+ /* Assert first pdir entry is set */
+ if (!(ioc->pdir_base[off] >> 60)) {
+ sba_dump_pdir_entry(ioc,"sba_mark_invalid()", PDIR_INDEX(iovp));
+ }
+#endif
+
+ if (byte_cnt <= IOVP_SIZE)
+ {
+ ASSERT(off < ioc->pdir_size);
+
+ iovp |= IOVP_SHIFT; /* set "size" field for PCOM */
+
+ /*
+ ** clear I/O PDIR entry "valid" bit
+ ** Do NOT clear the rest - save it for debugging.
+ ** We should only clear bits that have previously
+ ** been enabled.
+ */
+ ioc->pdir_base[off] &= ~(0x80000000000000FFULL);
+ } else {
+ u32 t = get_order(byte_cnt) + PAGE_SHIFT;
+
+ iovp |= t;
+ ASSERT(t <= 31); /* 2GB! Max value of "size" field */
+
+ do {
+ /* verify this pdir entry is enabled */
+ ASSERT(ioc->pdir_base[off] >> 63);
+ /* clear I/O Pdir entry "valid" bit first */
+ ioc->pdir_base[off] &= ~(0x80000000000000FFULL);
+ off++;
+ byte_cnt -= IOVP_SIZE;
+ } while (byte_cnt > 0);
+ }
+
+ WRITE_REG(iovp, ioc->ioc_hpa+IOC_PCOM);
+}
+
+/**
+ * sba_map_single - map one buffer and return IOVA for DMA
+ * @dev: instance of PCI owned by the driver that's asking.
+ * @addr: driver buffer to map.
+ * @size: number of bytes to map in driver buffer.
+ * @direction: R/W or both.
+ *
+ * See Documentation/DMA-mapping.txt
+ */
+dma_addr_t
+sba_map_single(struct pci_dev *dev, void *addr, size_t size, int direction)
+{
+ struct ioc *ioc;
+ unsigned long flags;
+ dma_addr_t iovp;
+ dma_addr_t offset;
+ u64 *pdir_start;
+ int pide;
+#ifdef ALLOW_IOV_BYPASS
+ unsigned long pci_addr = virt_to_phys(addr);
+#endif
+
+ ioc = GET_IOC(dev);
+ ASSERT(ioc);
+
+#ifdef ALLOW_IOV_BYPASS
+ /*
+ ** Check if the PCI device can DMA to ptr... if so, just return ptr
+ */
+ if ((pci_addr & ~dev->dma_mask) == 0) {
+ /*
+ ** Device is bit capable of DMA'ing to the buffer...
+ ** just return the PCI address of ptr
+ */
+#ifdef CONFIG_PROC_FS
+ spin_lock_irqsave(&ioc->res_lock, flags);
+ ioc->msingle_bypass++;
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+#endif
+ DBG_BYPASS("sba_map_single() bypass mask/addr: 0x%lx/0x%lx\n",
+ dev->dma_mask, pci_addr);
+ return pci_addr;
+ }
+#endif
+
+ ASSERT(size > 0);
+ ASSERT(size <= DMA_CHUNK_SIZE);
+
+ /* save offset bits */
+ offset = ((dma_addr_t) (long) addr) & ~IOVP_MASK;
+
+ /* round up to nearest IOVP_SIZE */
+ size = (size + offset + ~IOVP_MASK) & IOVP_MASK;
+
+ spin_lock_irqsave(&ioc->res_lock, flags);
+#ifdef ASSERT_PDIR_SANITY
+ if (sba_check_pdir(ioc,"Check before sba_map_single()"))
+ panic("Sanity check failed");
+#endif
+
+#ifdef CONFIG_PROC_FS
+ ioc->msingle_calls++;
+ ioc->msingle_pages += size >> IOVP_SHIFT;
+#endif
+ pide = sba_alloc_range(ioc, size);
+ iovp = (dma_addr_t) pide << IOVP_SHIFT;
+
+ DBG_RUN("%s() 0x%p -> 0x%lx\n",
+ __FUNCTION__, addr, (long) iovp | offset);
+
+ pdir_start = &(ioc->pdir_base[pide]);
+
+ while (size > 0) {
+ ASSERT(((u8 *)pdir_start)[7] == 0); /* verify availability */
+ sba_io_pdir_entry(pdir_start, (unsigned long) addr);
+
+ DBG_RUN(" pdir 0x%p %lx\n", pdir_start, *pdir_start);
+
+ addr += IOVP_SIZE;
+ size -= IOVP_SIZE;
+ pdir_start++;
+ }
+ /* form complete address */
+#ifdef ASSERT_PDIR_SANITY
+ sba_check_pdir(ioc,"Check after sba_map_single()");
+#endif
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+ return SBA_IOVA(ioc, iovp, offset, DEFAULT_DMA_HINT_REG);
+}
+
+/**
+ * sba_unmap_single - unmap one IOVA and free resources
+ * @dev: instance of PCI owned by the driver that's asking.
+ * @iova: IOVA of driver buffer previously mapped.
+ * @size: number of bytes mapped in driver buffer.
+ * @direction: R/W or both.
+ *
+ * See Documentation/DMA-mapping.txt
+ */
+void sba_unmap_single(struct pci_dev *dev, dma_addr_t iova, size_t size,
+ int direction)
+{
+ struct ioc *ioc;
+#if DELAYED_RESOURCE_CNT > 0
+ struct sba_dma_pair *d;
+#endif
+ unsigned long flags;
+ dma_addr_t offset;
+
+ ioc = GET_IOC(dev);
+ ASSERT(ioc);
+
+#ifdef ALLOW_IOV_BYPASS
+ if ((iova & ioc->imask) != ioc->ibase) {
+ /*
+ ** Address does not fall w/in IOVA, must be bypassing
+ */
+#ifdef CONFIG_PROC_FS
+ spin_lock_irqsave(&ioc->res_lock, flags);
+ ioc->usingle_bypass++;
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+#endif
+ DBG_BYPASS("sba_unmap_single() bypass addr: 0x%lx\n", iova);
+
+#ifdef ENABLE_MARK_CLEAN
+ if (direction == PCI_DMA_FROMDEVICE) {
+ mark_clean(phys_to_virt(iova), size);
+ }
+#endif
+ return;
+ }
+#endif
+ offset = iova & ~IOVP_MASK;
+
+ DBG_RUN("%s() iovp 0x%lx/%x\n",
+ __FUNCTION__, (long) iova, size);
+
+ iova ^= offset; /* clear offset bits */
+ size += offset;
+ size = ROUNDUP(size, IOVP_SIZE);
+
+ spin_lock_irqsave(&ioc->res_lock, flags);
+#ifdef CONFIG_PROC_FS
+ ioc->usingle_calls++;
+ ioc->usingle_pages += size >> IOVP_SHIFT;
+#endif
+
+#if DELAYED_RESOURCE_CNT > 0
+ d = &(ioc->saved[ioc->saved_cnt]);
+ d->iova = iova;
+ d->size = size;
+ if (++(ioc->saved_cnt) >= DELAYED_RESOURCE_CNT) {
+ int cnt = ioc->saved_cnt;
+ while (cnt--) {
+ sba_mark_invalid(ioc, d->iova, d->size);
+ sba_free_range(ioc, d->iova, d->size);
+ d--;
+ }
+ ioc->saved_cnt = 0;
+ READ_REG(ioc->ioc_hpa+IOC_PCOM); /* flush purges */
+ }
+#else /* DELAYED_RESOURCE_CNT == 0 */
+ sba_mark_invalid(ioc, iova, size);
+ sba_free_range(ioc, iova, size);
+ READ_REG(ioc->ioc_hpa+IOC_PCOM); /* flush purges */
+#endif /* DELAYED_RESOURCE_CNT == 0 */
+#ifdef ENABLE_MARK_CLEAN
+ if (direction == PCI_DMA_FROMDEVICE) {
+ u32 iovp = (u32) SBA_IOVP(ioc,iova);
+ int off = PDIR_INDEX(iovp);
+ void *addr;
+
+ if (size <= IOVP_SIZE) {
+ addr = phys_to_virt(ioc->pdir_base[off] &
+ ~0xE000000000000FFFULL);
+ mark_clean(addr, size);
+ } else {
+ size_t byte_cnt = size;
+
+ do {
+ addr = phys_to_virt(ioc->pdir_base[off] &
+ ~0xE000000000000FFFULL);
+ mark_clean(addr, min(byte_cnt, IOVP_SIZE));
+ off++;
+ byte_cnt -= IOVP_SIZE;
+
+ } while (byte_cnt > 0);
+ }
+ }
+#endif
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+
+ /* XXX REVISIT for 2.5 Linux - need syncdma for zero-copy support.
+ ** For Astro based systems this isn't a big deal WRT performance.
+ ** As long as 2.4 kernels copyin/copyout data from/to userspace,
+ ** we don't need the syncdma. The issue here is I/O MMU cachelines
+ ** are *not* coherent in all cases. May be hwrev dependent.
+ ** Need to investigate more.
+ asm volatile("syncdma");
+ */
+}
+
+
+/**
+ * sba_alloc_consistent - allocate/map shared mem for DMA
+ * @hwdev: instance of PCI owned by the driver that's asking.
+ * @size: number of bytes mapped in driver buffer.
+ * @dma_handle: IOVA of new buffer.
+ *
+ * See Documentation/DMA-mapping.txt
+ */
+void *
+sba_alloc_consistent(struct pci_dev *hwdev, size_t size, dma_addr_t *dma_handle)
+{
+ void *ret;
+
+ if (!hwdev) {
+ /* only support PCI */
+ *dma_handle = 0;
+ return 0;
+ }
+
+ ret = (void *) __get_free_pages(GFP_ATOMIC, get_order(size));
+
+ if (ret) {
+ memset(ret, 0, size);
+ *dma_handle = sba_map_single(hwdev, ret, size, 0);
+ }
+
+ return ret;
+}
+
+
+/**
+ * sba_free_consistent - free/unmap shared mem for DMA
+ * @hwdev: instance of PCI owned by the driver that's asking.
+ * @size: number of bytes mapped in driver buffer.
+ * @vaddr: virtual address IOVA of "consistent" buffer.
+ * @dma_handler: IO virtual address of "consistent" buffer.
+ *
+ * See Documentation/DMA-mapping.txt
+ */
+void sba_free_consistent(struct pci_dev *hwdev, size_t size, void *vaddr,
+ dma_addr_t dma_handle)
+{
+ sba_unmap_single(hwdev, dma_handle, size, 0);
+ free_pages((unsigned long) vaddr, get_order(size));
+}
+
+
+/*
+** Since 0 is a valid pdir_base index value, can't use that
+** to determine if a value is valid or not. Use a flag to indicate
+** the SG list entry contains a valid pdir index.
+*/
+#define PIDE_FLAG 0x1UL
+
+#ifdef DEBUG_LARGE_SG_ENTRIES
+int dump_run_sg = 0;
+#endif
+
+
+/**
+ * sba_fill_pdir - write allocated SG entries into IO PDIR
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @startsg: list of IOVA/size pairs
+ * @nents: number of entries in startsg list
+ *
+ * Take preprocessed SG list and write corresponding entries
+ * in the IO PDIR.
+ */
+
+static SBA_INLINE int
+sba_fill_pdir(
+ struct ioc *ioc,
+ struct scatterlist *startsg,
+ int nents)
+{
+ struct scatterlist *dma_sg = startsg; /* pointer to current DMA */
+ int n_mappings = 0;
+ u64 *pdirp = 0;
+ unsigned long dma_offset = 0;
+
+ dma_sg--;
+ while (nents-- > 0) {
+ int cnt = sba_sg_len(startsg);
+ sba_sg_len(startsg) = 0;
+
+#ifdef DEBUG_LARGE_SG_ENTRIES
+ if (dump_run_sg)
+ printk(" %2d : %08lx/%05x %p\n",
+ nents,
+ (unsigned long) sba_sg_iova(startsg), cnt,
+ sba_sg_buffer(startsg)
+ );
+#else
+ DBG_RUN_SG(" %d : %08lx/%05x %p\n",
+ nents,
+ (unsigned long) sba_sg_iova(startsg), cnt,
+ sba_sg_buffer(startsg)
+ );
+#endif
+ /*
+ ** Look for the start of a new DMA stream
+ */
+ if ((u64)sba_sg_iova(startsg) & PIDE_FLAG) {
+ u32 pide = (u64)sba_sg_iova(startsg) & ~PIDE_FLAG;
+ dma_offset = (unsigned long) pide & ~IOVP_MASK;
+ sba_sg_iova(startsg) = 0;
+ dma_sg++;
+ sba_sg_iova(dma_sg) = (char *)(pide | ioc->ibase);
+ pdirp = &(ioc->pdir_base[pide >> IOVP_SHIFT]);
+ n_mappings++;
+ }
+
+ /*
+ ** Look for a VCONTIG chunk
+ */
+ if (cnt) {
+ unsigned long vaddr = (unsigned long) sba_sg_buffer(startsg);
+ ASSERT(pdirp);
+
+ /* Since multiple Vcontig blocks could make up
+ ** one DMA stream, *add* cnt to dma_len.
+ */
+ sba_sg_len(dma_sg) += cnt;
+ cnt += dma_offset;
+ dma_offset=0; /* only want offset on first chunk */
+ cnt = ROUNDUP(cnt, IOVP_SIZE);
+#ifdef CONFIG_PROC_FS
+ ioc->msg_pages += cnt >> IOVP_SHIFT;
+#endif
+ do {
+ sba_io_pdir_entry(pdirp, vaddr);
+ vaddr += IOVP_SIZE;
+ cnt -= IOVP_SIZE;
+ pdirp++;
+ } while (cnt > 0);
+ }
+ startsg++;
+ }
+#ifdef DEBUG_LARGE_SG_ENTRIES
+ dump_run_sg = 0;
+#endif
+ return(n_mappings);
+}
+
+
+/*
+** Two address ranges are DMA contiguous *iff* "end of prev" and
+** "start of next" are both on a page boundry.
+**
+** (shift left is a quick trick to mask off upper bits)
+*/
+#define DMA_CONTIG(__X, __Y) \
+ (((((unsigned long) __X) | ((unsigned long) __Y)) << (BITS_PER_LONG - PAGE_SHIFT)) == 0UL)
+
+
+/**
+ * sba_coalesce_chunks - preprocess the SG list
+ * @ioc: IO MMU structure which owns the pdir we are interested in.
+ * @startsg: list of IOVA/size pairs
+ * @nents: number of entries in startsg list
+ *
+ * First pass is to walk the SG list and determine where the breaks are
+ * in the DMA stream. Allocates PDIR entries but does not fill them.
+ * Returns the number of DMA chunks.
+ *
+ * Doing the fill seperate from the coalescing/allocation keeps the
+ * code simpler. Future enhancement could make one pass through
+ * the sglist do both.
+ */
+static SBA_INLINE int
+sba_coalesce_chunks( struct ioc *ioc,
+ struct scatterlist *startsg,
+ int nents)
+{
+ struct scatterlist *vcontig_sg; /* VCONTIG chunk head */
+ unsigned long vcontig_len; /* len of VCONTIG chunk */
+ unsigned long vcontig_end;
+ struct scatterlist *dma_sg; /* next DMA stream head */
+ unsigned long dma_offset, dma_len; /* start/len of DMA stream */
+ int n_mappings = 0;
+
+ while (nents > 0) {
+ unsigned long vaddr = (unsigned long) (startsg->address);
+
+ /*
+ ** Prepare for first/next DMA stream
+ */
+ dma_sg = vcontig_sg = startsg;
+ dma_len = vcontig_len = vcontig_end = sba_sg_len(startsg);
+ vcontig_end += vaddr;
+ dma_offset = vaddr & ~IOVP_MASK;
+
+ /* PARANOID: clear entries */
+ sba_sg_buffer(startsg) = sba_sg_iova(startsg);
+ sba_sg_iova(startsg) = 0;
+ sba_sg_len(startsg) = 0;
+
+ /*
+ ** This loop terminates one iteration "early" since
+ ** it's always looking one "ahead".
+ */
+ while (--nents > 0) {
+ unsigned long vaddr; /* tmp */
+
+ startsg++;
+
+ /* catch brokenness in SCSI layer */
+ ASSERT(startsg->length <= DMA_CHUNK_SIZE);
+
+ /*
+ ** First make sure current dma stream won't
+ ** exceed DMA_CHUNK_SIZE if we coalesce the
+ ** next entry.
+ */
+ if (((dma_len + dma_offset + startsg->length + ~IOVP_MASK) & IOVP_MASK) > DMA_CHUNK_SIZE)
+ break;
+
+ /*
+ ** Then look for virtually contiguous blocks.
+ **
+ ** append the next transaction?
+ */
+ vaddr = (unsigned long) sba_sg_iova(startsg);
+ if (vcontig_end == vaddr)
+ {
+ vcontig_len += sba_sg_len(startsg);
+ vcontig_end += sba_sg_len(startsg);
+ dma_len += sba_sg_len(startsg);
+ sba_sg_buffer(startsg) = (char *)vaddr;
+ sba_sg_iova(startsg) = 0;
+ sba_sg_len(startsg) = 0;
+ continue;
+ }
+
+#ifdef DEBUG_LARGE_SG_ENTRIES
+ dump_run_sg = (vcontig_len > IOVP_SIZE);
+#endif
+
+ /*
+ ** Not virtually contigous.
+ ** Terminate prev chunk.
+ ** Start a new chunk.
+ **
+ ** Once we start a new VCONTIG chunk, dma_offset
+ ** can't change. And we need the offset from the first
+ ** chunk - not the last one. Ergo Successive chunks
+ ** must start on page boundaries and dove tail
+ ** with it's predecessor.
+ */
+ sba_sg_len(vcontig_sg) = vcontig_len;
+
+ vcontig_sg = startsg;
+ vcontig_len = sba_sg_len(startsg);
+
+ /*
+ ** 3) do the entries end/start on page boundaries?
+ ** Don't update vcontig_end until we've checked.
+ */
+ if (DMA_CONTIG(vcontig_end, vaddr))
+ {
+ vcontig_end = vcontig_len + vaddr;
+ dma_len += vcontig_len;
+ sba_sg_buffer(startsg) = (char *)vaddr;
+ sba_sg_iova(startsg) = 0;
+ continue;
+ } else {
+ break;
+ }
+ }
+
+ /*
+ ** End of DMA Stream
+ ** Terminate last VCONTIG block.
+ ** Allocate space for DMA stream.
+ */
+ sba_sg_len(vcontig_sg) = vcontig_len;
+ dma_len = (dma_len + dma_offset + ~IOVP_MASK) & IOVP_MASK;
+ ASSERT(dma_len <= DMA_CHUNK_SIZE);
+ sba_sg_iova(dma_sg) = (char *) (PIDE_FLAG
+ | (sba_alloc_range(ioc, dma_len) << IOVP_SHIFT)
+ | dma_offset);
+ n_mappings++;
+ }
+
+ return n_mappings;
+}
+
+
+/**
+ * sba_map_sg - map Scatter/Gather list
+ * @dev: instance of PCI owned by the driver that's asking.
+ * @sglist: array of buffer/length pairs
+ * @nents: number of entries in list
+ * @direction: R/W or both.
+ *
+ * See Documentation/DMA-mapping.txt
+ */
+int sba_map_sg(struct pci_dev *dev, struct scatterlist *sglist, int nents,
+ int direction)
+{
+ struct ioc *ioc;
+ int coalesced, filled = 0;
+ unsigned long flags;
+#ifdef ALLOW_IOV_BYPASS
+ struct scatterlist *sg;
+#endif
+
+ DBG_RUN_SG("%s() START %d entries\n", __FUNCTION__, nents);
+ ioc = GET_IOC(dev);
+ ASSERT(ioc);
+
+#ifdef ALLOW_IOV_BYPASS
+ if (dev->dma_mask >= ioc->dma_mask) {
+ for (sg = sglist ; filled < nents ; filled++, sg++){
+ sba_sg_buffer(sg) = sba_sg_iova(sg);
+ sba_sg_iova(sg) = (char *)virt_to_phys(sba_sg_buffer(sg));
+ }
+#ifdef CONFIG_PROC_FS
+ spin_lock_irqsave(&ioc->res_lock, flags);
+ ioc->msg_bypass++;
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+#endif
+ return filled;
+ }
+#endif
+ /* Fast path single entry scatterlists. */
+ if (nents == 1) {
+ sba_sg_buffer(sglist) = sba_sg_iova(sglist);
+ sba_sg_iova(sglist) = (char *)sba_map_single(dev,
+ sba_sg_buffer(sglist),
+ sba_sg_len(sglist), direction);
+#ifdef CONFIG_PROC_FS
+ /*
+ ** Should probably do some stats counting, but trying to
+ ** be precise quickly starts wasting CPU time.
+ */
+#endif
+ return 1;
+ }
+
+ spin_lock_irqsave(&ioc->res_lock, flags);
+
+#ifdef ASSERT_PDIR_SANITY
+ if (sba_check_pdir(ioc,"Check before sba_map_sg()"))
+ {
+ sba_dump_sg(ioc, sglist, nents);
+ panic("Check before sba_map_sg()");
+ }
+#endif
+
+#ifdef CONFIG_PROC_FS
+ ioc->msg_calls++;
+#endif
+
+ /*
+ ** First coalesce the chunks and allocate I/O pdir space
+ **
+ ** If this is one DMA stream, we can properly map using the
+ ** correct virtual address associated with each DMA page.
+ ** w/o this association, we wouldn't have coherent DMA!
+ ** Access to the virtual address is what forces a two pass algorithm.
+ */
+ coalesced = sba_coalesce_chunks(ioc, sglist, nents);
+
+ /*
+ ** Program the I/O Pdir
+ **
+ ** map the virtual addresses to the I/O Pdir
+ ** o dma_address will contain the pdir index
+ ** o dma_len will contain the number of bytes to map
+ ** o address contains the virtual address.
+ */
+ filled = sba_fill_pdir(ioc, sglist, nents);
+
+#ifdef ASSERT_PDIR_SANITY
+ if (sba_check_pdir(ioc,"Check after sba_map_sg()"))
+ {
+ sba_dump_sg(ioc, sglist, nents);
+ panic("Check after sba_map_sg()\n");
+ }
+#endif
+
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+
+ ASSERT(coalesced == filled);
+ DBG_RUN_SG("%s() DONE %d mappings\n", __FUNCTION__, filled);
+
+ return filled;
+}
+
+
+/**
+ * sba_unmap_sg - unmap Scatter/Gather list
+ * @dev: instance of PCI owned by the driver that's asking.
+ * @sglist: array of buffer/length pairs
+ * @nents: number of entries in list
+ * @direction: R/W or both.
+ *
+ * See Documentation/DMA-mapping.txt
+ */
+void sba_unmap_sg(struct pci_dev *dev, struct scatterlist *sglist, int nents,
+ int direction)
+{
+ struct ioc *ioc;
+#ifdef ASSERT_PDIR_SANITY
+ unsigned long flags;
+#endif
+
+ DBG_RUN_SG("%s() START %d entries, %p,%x\n",
+ __FUNCTION__, nents, sba_sg_buffer(sglist), sglist->length);
+
+ ioc = GET_IOC(dev);
+ ASSERT(ioc);
+
+#ifdef CONFIG_PROC_FS
+ ioc->usg_calls++;
+#endif
+
+#ifdef ASSERT_PDIR_SANITY
+ spin_lock_irqsave(&ioc->res_lock, flags);
+ sba_check_pdir(ioc,"Check before sba_unmap_sg()");
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+#endif
+
+ while (sba_sg_len(sglist) && nents--) {
+
+ sba_unmap_single(dev, (dma_addr_t)sba_sg_iova(sglist),
+ sba_sg_len(sglist), direction);
+#ifdef CONFIG_PROC_FS
+ /*
+ ** This leaves inconsistent data in the stats, but we can't
+ ** tell which sg lists were mapped by map_single and which
+ ** were coalesced to a single entry. The stats are fun,
+ ** but speed is more important.
+ */
+ ioc->usg_pages += (((u64)sba_sg_iova(sglist) & ~IOVP_MASK) + sba_sg_len(sglist) + IOVP_SIZE - 1) >> PAGE_SHIFT;
+#endif
+ ++sglist;
+ }
+
+ DBG_RUN_SG("%s() DONE (nents %d)\n", __FUNCTION__, nents);
+
+#ifdef ASSERT_PDIR_SANITY
+ spin_lock_irqsave(&ioc->res_lock, flags);
+ sba_check_pdir(ioc,"Check after sba_unmap_sg()");
+ spin_unlock_irqrestore(&ioc->res_lock, flags);
+#endif
+
+}
+
+unsigned long
+sba_dma_address (struct scatterlist *sg)
+{
+ return ((unsigned long)sba_sg_iova(sg));
+}
+
+/**************************************************************
+*
+* Initialization and claim
+*
+***************************************************************/
+
+
+static void
+sba_ioc_init(struct sba_device *sba_dev, struct ioc *ioc, int ioc_num)
+{
+ u32 iova_space_size, iova_space_mask;
+ void * pdir_base;
+ int pdir_size, iov_order, tcnfg;
+
+ /*
+ ** Firmware programs the maximum IOV space size into the imask reg
+ */
+ iova_space_size = ~(READ_REG(ioc->ioc_hpa + IOC_IMASK) & 0xFFFFFFFFUL) + 1;
+#ifdef CONFIG_IA64_HP_PROTO
+ if (!iova_space_size)
+ iova_space_size = GB(1);
+#endif
+
+ /*
+ ** iov_order is always based on a 1GB IOVA space since we want to
+ ** turn on the other half for AGP GART.
+ */
+ iov_order = get_order(iova_space_size >> (IOVP_SHIFT-PAGE_SHIFT));
+ ioc->pdir_size = pdir_size = (iova_space_size/IOVP_SIZE) * sizeof(u64);
+
+ DBG_INIT("%s() hpa 0x%lx IOV %dMB (%d bits) PDIR size 0x%0x\n",
+ __FUNCTION__, ioc->ioc_hpa, iova_space_size>>20,
+ iov_order + PAGE_SHIFT, ioc->pdir_size);
+
+ /* FIXME : DMA HINTs not used */
+ ioc->hint_shift_pdir = iov_order + PAGE_SHIFT;
+ ioc->hint_mask_pdir = ~(0x3 << (iov_order + PAGE_SHIFT));
+
+ ioc->pdir_base =
+ pdir_base = (void *) __get_free_pages(GFP_KERNEL, get_order(pdir_size));
+ if (NULL == pdir_base)
+ {
+ panic(__FILE__ ":%s() could not allocate I/O Page Table\n", __FUNCTION__);
+ }
+ memset(pdir_base, 0, pdir_size);
+
+ DBG_INIT("%s() pdir %p size %x hint_shift_pdir %x hint_mask_pdir %lx\n",
+ __FUNCTION__, pdir_base, pdir_size,
+ ioc->hint_shift_pdir, ioc->hint_mask_pdir);
+
+ ASSERT((((unsigned long) pdir_base) & PAGE_MASK) == (unsigned long) pdir_base);
+ WRITE_REG(virt_to_phys(pdir_base), ioc->ioc_hpa + IOC_PDIR_BASE);
+
+ DBG_INIT(" base %p\n", pdir_base);
+
+ /* build IMASK for IOC and Elroy */
+ iova_space_mask = 0xffffffff;
+ iova_space_mask <<= (iov_order + PAGE_SHIFT);
+
+#ifdef CONFIG_IA64_HP_PROTO
+ /*
+ ** REVISIT - this is a kludge, but we won't be supporting anything but
+ ** zx1 2.0 or greater for real. When fw is in shape, ibase will
+ ** be preprogrammed w/ the IOVA hole base and imask will give us
+ ** the size.
+ */
+ if ((sba_dev->hw_rev & 0xFF) < 0x20) {
+ DBG_INIT("%s() Found SBA rev < 2.0, setting IOVA base to 0. This device will not be supported in the future.\n", __FUNCTION__);
+ ioc->ibase = 0x0;
+ } else
+#endif
+ ioc->ibase = READ_REG(ioc->ioc_hpa + IOC_IBASE) & 0xFFFFFFFEUL;
+
+ ioc->imask = iova_space_mask; /* save it */
+
+ DBG_INIT("%s() IOV base 0x%lx mask 0x%0lx\n",
+ __FUNCTION__, ioc->ibase, ioc->imask);
+
+ /*
+ ** FIXME: Hint registers are programmed with default hint
+ ** values during boot, so hints should be sane even if we
+ ** can't reprogram them the way drivers want.
+ */
+
+ WRITE_REG(ioc->imask, ioc->ioc_hpa+IOC_IMASK);
+
+ /*
+ ** Setting the upper bits makes checking for bypass addresses
+ ** a little faster later on.
+ */
+ ioc->imask |= 0xFFFFFFFF00000000UL;
+
+ /* Set I/O PDIR Page size to system page size */
+ switch (PAGE_SHIFT) {
+ case 12: /* 4K */
+ tcnfg = 0;
+ break;
+ case 13: /* 8K */
+ tcnfg = 1;
+ break;
+ case 14: /* 16K */
+ tcnfg = 2;
+ break;
+ case 16: /* 64K */
+ tcnfg = 3;
+ break;
+ }
+ WRITE_REG(tcnfg, ioc->ioc_hpa+IOC_TCNFG);
+
+ /*
+ ** Program the IOC's ibase and enable IOVA translation
+ ** Bit zero == enable bit.
+ */
+ WRITE_REG(ioc->ibase | 1, ioc->ioc_hpa+IOC_IBASE);
+
+ /*
+ ** Clear I/O TLB of any possible entries.
+ ** (Yes. This is a bit paranoid...but so what)
+ */
+ WRITE_REG(0 | 31, ioc->ioc_hpa+IOC_PCOM);
+
+ /*
+ ** If an AGP device is present, only use half of the IOV space
+ ** for PCI DMA. Unfortunately we can't know ahead of time
+ ** whether GART support will actually be used, for now we
+ ** can just key on an AGP device found in the system.
+ ** We program the next pdir index after we stop w/ a key for
+ ** the GART code to handshake on.
+ */
+ if (SBA_GET_AGP(sba_dev)) {
+ DBG_INIT("%s() AGP Device found, reserving 512MB for GART support\n", __FUNCTION__);
+ ioc->pdir_size /= 2;
+ ((u64 *)pdir_base)[PDIR_INDEX(iova_space_size/2)] = 0x0000badbadc0ffeeULL;
+ }
+
+ DBG_INIT("%s() DONE\n", __FUNCTION__);
+}
+
+
+
+/**************************************************************************
+**
+** SBA initialization code (HW and SW)
+**
+** o identify SBA chip itself
+** o FIXME: initialize DMA hints for reasonable defaults
+**
+**************************************************************************/
+
+static void
+sba_hw_init(struct sba_device *sba_dev)
+{
+ int i;
+ int num_ioc;
+ u64 dma_mask;
+ u32 func_id;
+
+ /*
+ ** Identify the SBA so we can set the dma_mask. We can make a virtual
+ ** dma_mask of the memory subsystem such that devices not implmenting
+ ** a full 64bit mask might still be able to bypass efficiently.
+ */
+ func_id = READ_REG(sba_dev->sba_hpa + SBA_FUNC_ID);
+
+ if (func_id == ZX1_FUNC_ID_VALUE) {
+ dma_mask = 0xFFFFFFFFFFUL;
+ } else {
+ dma_mask = 0xFFFFFFFFFFFFFFFFUL;
+ }
+
+ DBG_INIT("%s(): ioc->dma_mask == 0x%lx\n", __FUNCTION__, dma_mask);
+
+ /*
+ ** Leaving in the multiple ioc code from parisc for the future,
+ ** currently there are no muli-ioc mckinley sbas
+ */
+ sba_dev->ioc[0].ioc_hpa = SBA_IOC_OFFSET;
+ num_ioc = 1;
+
+ sba_dev->num_ioc = num_ioc;
+ for (i = 0; i < num_ioc; i++) {
+ sba_dev->ioc[i].dma_mask = dma_mask;
+ sba_dev->ioc[i].ioc_hpa += sba_dev->sba_hpa;
+ sba_ioc_init(sba_dev, &(sba_dev->ioc[i]), i);
+ }
+}
+
+static void
+sba_common_init(struct sba_device *sba_dev)
+{
+ int i;
+
+ /* add this one to the head of the list (order doesn't matter)
+ ** This will be useful for debugging - especially if we get coredumps
+ */
+ sba_dev->next = sba_list;
+ sba_list = sba_dev;
+ sba_count++;
+
+ for(i=0; i< sba_dev->num_ioc; i++) {
+ int res_size;
+
+ /* resource map size dictated by pdir_size */
+ res_size = sba_dev->ioc[i].pdir_size/sizeof(u64); /* entries */
+ res_size >>= 3; /* convert bit count to byte count */
+ DBG_INIT("%s() res_size 0x%x\n",
+ __FUNCTION__, res_size);
+
+ sba_dev->ioc[i].res_size = res_size;
+ sba_dev->ioc[i].res_map = (char *) __get_free_pages(GFP_KERNEL, get_order(res_size));
+
+ if (NULL == sba_dev->ioc[i].res_map)
+ {
+ panic(__FILE__ ":%s() could not allocate resource map\n", __FUNCTION__ );
+ }
+
+ memset(sba_dev->ioc[i].res_map, 0, res_size);
+ /* next available IOVP - circular search */
+ if ((sba_dev->hw_rev & 0xFF) >= 0x20) {
+ sba_dev->ioc[i].res_hint = (unsigned long *)
+ sba_dev->ioc[i].res_map;
+ } else {
+ u64 reserved_iov;
+
+ /* Yet another 1.x hack */
+ printk("zx1 1.x: Starting resource hint offset into IOV space to avoid initial zero value IOVA\n");
+ sba_dev->ioc[i].res_hint = (unsigned long *)
+ &(sba_dev->ioc[i].res_map[L1_CACHE_BYTES]);
+
+ sba_dev->ioc[i].res_map[0] = 0x1;
+ sba_dev->ioc[i].pdir_base[0] = 0x8000badbadc0ffeeULL;
+
+ for (reserved_iov = 0xA0000 ; reserved_iov < 0xC0000 ; reserved_iov += IOVP_SIZE) {
+ u64 *res_ptr = sba_dev->ioc[i].res_map;
+ int index = PDIR_INDEX(reserved_iov);
+ int res_word;
+ u64 mask;
+
+ res_word = (int)(index / BITS_PER_LONG);
+ mask = 0x1UL << (index - (res_word * BITS_PER_LONG));
+ res_ptr[res_word] |= mask;
+ sba_dev->ioc[i].pdir_base[PDIR_INDEX(reserved_iov)] = (0x80000000000000FFULL | reserved_iov);
+
+ }
+ }
+
+#ifdef ASSERT_PDIR_SANITY
+ /* Mark first bit busy - ie no IOVA 0 */
+ sba_dev->ioc[i].res_map[0] = 0x1;
+ sba_dev->ioc[i].pdir_base[0] = 0x8000badbadc0ffeeULL;
+#endif
+
+ DBG_INIT("%s() %d res_map %x %p\n", __FUNCTION__,
+ i, res_size, (void *)sba_dev->ioc[i].res_map);
+ }
+
+ sba_dev->sba_lock = SPIN_LOCK_UNLOCKED;
+}
+
+#ifdef CONFIG_PROC_FS
+static int sba_proc_info(char *buf, char **start, off_t offset, int len)
+{
+ struct sba_device *sba_dev = sba_list;
+ struct ioc *ioc = &sba_dev->ioc[0]; /* FIXME: Multi-IOC support! */
+ int total_pages = (int) (ioc->res_size << 3); /* 8 bits per byte */
+ unsigned long i = 0, avg = 0, min, max;
+
+ sprintf(buf, "%s rev %d.%d\n",
+ "Hewlett Packard zx1 SBA",
+ ((sba_dev->hw_rev >> 4) & 0xF),
+ (sba_dev->hw_rev & 0xF)
+ );
+ sprintf(buf, "%sIO PDIR size : %d bytes (%d entries)\n",
+ buf,
+ (int) ((ioc->res_size << 3) * sizeof(u64)), /* 8 bits/byte */
+ total_pages);
+
+ sprintf(buf, "%sIO PDIR entries : %ld free %ld used (%d%%)\n", buf,
+ total_pages - ioc->used_pages, ioc->used_pages,
+ (int) (ioc->used_pages * 100 / total_pages));
+
+ sprintf(buf, "%sResource bitmap : %d bytes (%d pages)\n",
+ buf, ioc->res_size, ioc->res_size << 3); /* 8 bits per byte */
+
+ min = max = ioc->avg_search[0];
+ for (i = 0; i < SBA_SEARCH_SAMPLE; i++) {
+ avg += ioc->avg_search[i];
+ if (ioc->avg_search[i] > max) max = ioc->avg_search[i];
+ if (ioc->avg_search[i] < min) min = ioc->avg_search[i];
+ }
+ avg /= SBA_SEARCH_SAMPLE;
+ sprintf(buf, "%s Bitmap search : %ld/%ld/%ld (min/avg/max CPU Cycles)\n",
+ buf, min, avg, max);
+
+ sprintf(buf, "%spci_map_single(): %12ld calls %12ld pages (avg %d/1000)\n",
+ buf, ioc->msingle_calls, ioc->msingle_pages,
+ (int) ((ioc->msingle_pages * 1000)/ioc->msingle_calls));
+#ifdef ALLOW_IOV_BYPASS
+ sprintf(buf, "%spci_map_single(): %12ld bypasses\n",
+ buf, ioc->msingle_bypass);
+#endif
+
+ sprintf(buf, "%spci_unmap_single: %12ld calls %12ld pages (avg %d/1000)\n",
+ buf, ioc->usingle_calls, ioc->usingle_pages,
+ (int) ((ioc->usingle_pages * 1000)/ioc->usingle_calls));
+#ifdef ALLOW_IOV_BYPASS
+ sprintf(buf, "%spci_unmap_single: %12ld bypasses\n",
+ buf, ioc->usingle_bypass);
+#endif
+
+ sprintf(buf, "%spci_map_sg() : %12ld calls %12ld pages (avg %d/1000)\n",
+ buf, ioc->msg_calls, ioc->msg_pages,
+ (int) ((ioc->msg_pages * 1000)/ioc->msg_calls));
+#ifdef ALLOW_IOV_BYPASS
+ sprintf(buf, "%spci_map_sg() : %12ld bypasses\n",
+ buf, ioc->msg_bypass);
+#endif
+
+ sprintf(buf, "%spci_unmap_sg() : %12ld calls %12ld pages (avg %d/1000)\n",
+ buf, ioc->usg_calls, ioc->usg_pages,
+ (int) ((ioc->usg_pages * 1000)/ioc->usg_calls));
+
+ return strlen(buf);
+}
+
+static int
+sba_resource_map(char *buf, char **start, off_t offset, int len)
+{
+ struct ioc *ioc = sba_list->ioc; /* FIXME: Multi-IOC support! */
+ unsigned int *res_ptr = (unsigned int *)ioc->res_map;
+ int i;
+
+ buf[0] = '\0';
+ for(i = 0; i < (ioc->res_size / sizeof(unsigned int)); ++i, ++res_ptr) {
+ if ((i & 7) == 0)
+ strcat(buf,"\n ");
+ sprintf(buf, "%s %08x", buf, *res_ptr);
+ }
+ strcat(buf, "\n");
+
+ return strlen(buf);
+}
+#endif
+
+/*
+** Determine if sba should claim this chip (return 0) or not (return 1).
+** If so, initialize the chip and tell other partners in crime they
+** have work to do.
+*/
+void __init sba_init(void)
+{
+ struct sba_device *sba_dev;
+ u32 func_id, hw_rev;
+ u32 *func_offset = NULL;
+ int i, agp_found = 0;
+ static char sba_rev[6];
+ struct pci_dev *device = NULL;
+ u64 hpa = 0;
+
+ if (!(device = pci_find_device(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_ZX1_SBA, NULL)))
+ return;
+
+ for (i = 0; i < PCI_NUM_RESOURCES; i++) {
+ if (pci_resource_flags(device, i) == IORESOURCE_MEM) {
+ hpa = ioremap(pci_resource_start(device, i),
+ pci_resource_len(device, i));
+ break;
+ }
+ }
+
+ func_id = READ_REG(hpa + SBA_FUNC_ID);
+
+ if (func_id == ZX1_FUNC_ID_VALUE) {
+ (void)strcpy(sba_rev, "zx1");
+ func_offset = zx1_func_offsets;
+ } else {
+ return;
+ }
+
+ /* Read HW Rev First */
+ hw_rev = READ_REG(hpa + SBA_FCLASS) & 0xFFUL;
+
+ /*
+ * Not all revision registers of the chipset are updated on every
+ * turn. Must scan through all functions looking for the highest rev
+ */
+ if (func_offset) {
+ for (i = 0 ; func_offset[i] != -1 ; i++) {
+ u32 func_rev;
+
+ func_rev = READ_REG(hpa + SBA_FCLASS + func_offset[i]) & 0xFFUL;
+ DBG_INIT("%s() func offset: 0x%x rev: 0x%x\n",
+ __FUNCTION__, func_offset[i], func_rev);
+ if (func_rev > hw_rev)
+ hw_rev = func_rev;
+ }
+ }
+
+ printk(KERN_INFO "%s found %s %d.%d at %s, HPA 0x%lx\n", DRIVER_NAME,
+ sba_rev, ((hw_rev >> 4) & 0xF), (hw_rev & 0xF),
+ device->slot_name, hpa);
+
+ if ((hw_rev & 0xFF) < 0x20) {
+ printk(KERN_INFO "%s WARNING rev 2.0 or greater will be required for IO MMU support in the future\n", DRIVER_NAME);
+#ifndef CONFIG_IA64_HP_PROTO
+ panic("%s: CONFIG_IA64_HP_PROTO MUST be enabled to support SBA rev less than 2.0", DRIVER_NAME);
+#endif
+ }
+
+ sba_dev = kmalloc(sizeof(struct sba_device), GFP_KERNEL);
+ if (NULL == sba_dev) {
+ printk(KERN_ERR DRIVER_NAME " - couldn't alloc sba_device\n");
+ return;
+ }
+
+ memset(sba_dev, 0, sizeof(struct sba_device));
+
+ for(i=0; iioc[i].res_lock));
+
+ sba_dev->hw_rev = hw_rev;
+ sba_dev->sba_hpa = hpa;
+
+ /*
+ * We need to check for an AGP device, if we find one, then only
+ * use part of the IOVA space for PCI DMA, the rest is for GART.
+ * REVISIT for multiple IOC.
+ */
+ pci_for_each_dev(device)
+ agp_found |= pci_find_capability(device, PCI_CAP_ID_AGP);
+
+ if (agp_found && reserve_sba_gart)
+ SBA_SET_AGP(sba_dev);
+
+ sba_hw_init(sba_dev);
+ sba_common_init(sba_dev);
+
+#ifdef CONFIG_PROC_FS
+ {
+ struct proc_dir_entry * proc_mckinley_root;
+
+ proc_mckinley_root = proc_mkdir("bus/mckinley",0);
+ create_proc_info_entry(sba_rev, 0, proc_mckinley_root, sba_proc_info);
+ create_proc_info_entry("bitmap", 0, proc_mckinley_root, sba_resource_map);
+ }
+#endif
+}
+
+static int __init
+nosbagart (char *str)
+{
+ reserve_sba_gart = 0;
+ return 1;
+}
+
+__setup("nosbagart",nosbagart);
+
+EXPORT_SYMBOL(sba_init);
+EXPORT_SYMBOL(sba_map_single);
+EXPORT_SYMBOL(sba_unmap_single);
+EXPORT_SYMBOL(sba_map_sg);
+EXPORT_SYMBOL(sba_unmap_sg);
+EXPORT_SYMBOL(sba_dma_address);
+EXPORT_SYMBOL(sba_alloc_consistent);
+EXPORT_SYMBOL(sba_free_consistent);
diff -urN linux-2.5.8-pre3/arch/ia64/hp/hpsim_console.c lia64-2.5.8-pre3/arch/ia64/hp/hpsim_console.c
--- linux-2.5.8-pre3/arch/ia64/hp/hpsim_console.c Thu Apr 11 15:26:29 2002
+++ lia64-2.5.8-pre3/arch/ia64/hp/hpsim_console.c Wed Dec 31 16:00:00 1969
@@ -1,64 +0,0 @@
-/*
- * Platform dependent support for HP simulator.
- *
- * Copyright (C) 1998, 1999, 2002 Hewlett-Packard Co
- * David Mosberger-Tang
- * Copyright (C) 1999 Vijay Chander
- */
-#include
-
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-
-#include
-#include
-#include
-#include
-#include
-#include
-
-#include "hpsim_ssc.h"
-
-static int simcons_init (struct console *, char *);
-static void simcons_write (struct console *, const char *, unsigned);
-static kdev_t simcons_console_device (struct console *);
-
-struct console hpsim_cons = {
- name: "simcons",
- write: simcons_write,
- device: simcons_console_device,
- setup: simcons_init,
- flags: CON_PRINTBUFFER,
- index: -1,
-};
-
-static int
-simcons_init (struct console *cons, char *options)
-{
- return 0;
-}
-
-static void
-simcons_write (struct console *cons, const char *buf, unsigned count)
-{
- unsigned long ch;
-
- while (count-- > 0) {
- ch = *buf++;
- ia64_ssc(ch, 0, 0, 0, SSC_PUTCHAR);
- if (ch == '\n')
- ia64_ssc('\r', 0, 0, 0, SSC_PUTCHAR);
- }
-}
-
-static kdev_t
-simcons_console_device (struct console *c)
-{
- return mk_kdev(TTY_MAJOR, 64 + c->index);
-}
diff -urN linux-2.5.8-pre3/arch/ia64/hp/hpsim_irq.c lia64-2.5.8-pre3/arch/ia64/hp/hpsim_irq.c
--- linux-2.5.8-pre3/arch/ia64/hp/hpsim_irq.c Thu Apr 11 15:27:20 2002
+++ lia64-2.5.8-pre3/arch/ia64/hp/hpsim_irq.c Wed Dec 31 16:00:00 1969
@@ -1,46 +0,0 @@
-/*
- * Platform dependent support for HP simulator.
- *
- * Copyright (C) 1998-2001 Hewlett-Packard Co
- * Copyright (C) 1998-2001 David Mosberger-Tang
- */
-
-#include
-#include
-#include
-#include
-
-static unsigned int
-hpsim_irq_startup (unsigned int irq)
-{
- return 0;
-}
-
-static void
-hpsim_irq_noop (unsigned int irq)
-{
-}
-
-static struct hw_interrupt_type irq_type_hp_sim = {
- typename: "hpsim",
- startup: hpsim_irq_startup,
- shutdown: hpsim_irq_noop,
- enable: hpsim_irq_noop,
- disable: hpsim_irq_noop,
- ack: hpsim_irq_noop,
- end: hpsim_irq_noop,
- set_affinity: (void (*)(unsigned int, unsigned long)) hpsim_irq_noop,
-};
-
-void __init
-hpsim_irq_init (void)
-{
- irq_desc_t *idesc;
- int i;
-
- for (i = 0; i < NR_IRQS; ++i) {
- idesc = irq_desc(i);
- if (idesc->handler == &no_irq_type)
- idesc->handler = &irq_type_hp_sim;
- }
-}
diff -urN linux-2.5.8-pre3/arch/ia64/hp/hpsim_machvec.c lia64-2.5.8-pre3/arch/ia64/hp/hpsim_machvec.c
--- linux-2.5.8-pre3/arch/ia64/hp/hpsim_machvec.c Thu Apr 11 15:27:25 2002
+++ lia64-2.5.8-pre3/arch/ia64/hp/hpsim_machvec.c Wed Dec 31 16:00:00 1969
@@ -1,2 +0,0 @@
-#define MACHVEC_PLATFORM_NAME hpsim
-#include
diff -urN linux-2.5.8-pre3/arch/ia64/hp/hpsim_setup.c lia64-2.5.8-pre3/arch/ia64/hp/hpsim_setup.c
--- linux-2.5.8-pre3/arch/ia64/hp/hpsim_setup.c Thu Apr 11 15:27:39 2002
+++ lia64-2.5.8-pre3/arch/ia64/hp/hpsim_setup.c Wed Dec 31 16:00:00 1969
@@ -1,58 +0,0 @@
-/*
- * Platform dependent support for HP simulator.
- *
- * Copyright (C) 1998, 1999 Hewlett-Packard Co
- * Copyright (C) 1998, 1999 David Mosberger-Tang
- * Copyright (C) 1999 Vijay Chander
- */
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-
-#include
-#include
-#include
-#include
-#include
-#include
-
-#include "hpsim_ssc.h"
-
-extern struct console hpsim_cons;
-
-/*
- * Simulator system call.
- */
-asm (".text\n"
- ".align 32\n"
- ".global ia64_ssc\n"
- ".proc ia64_ssc\n"
- "ia64_ssc:\n"
- "mov r15=r36\n"
- "break 0x80001\n"
- "br.ret.sptk.many rp\n"
- ".endp\n");
-
-void
-ia64_ssc_connect_irq (long intr, long irq)
-{
- ia64_ssc(intr, irq, 0, 0, SSC_CONNECT_INTERRUPT);
-}
-
-void
-ia64_ctl_trace (long on)
-{
- ia64_ssc(on, 0, 0, 0, SSC_CTL_TRACE);
-}
-
-void __init
-hpsim_setup (char **cmdline_p)
-{
- ROOT_DEV = to_kdev_t(0x0801); /* default to first SCSI drive */
-
- register_console (&hpsim_cons);
-}
diff -urN linux-2.5.8-pre3/arch/ia64/hp/hpsim_ssc.h lia64-2.5.8-pre3/arch/ia64/hp/hpsim_ssc.h
--- linux-2.5.8-pre3/arch/ia64/hp/hpsim_ssc.h Thu Apr 11 15:27:42 2002
+++ lia64-2.5.8-pre3/arch/ia64/hp/hpsim_ssc.h Wed Dec 31 16:00:00 1969
@@ -1,36 +0,0 @@
-/*
- * Platform dependent support for HP simulator.
- *
- * Copyright (C) 1998, 1999 Hewlett-Packard Co
- * Copyright (C) 1998, 1999 David Mosberger-Tang
- * Copyright (C) 1999 Vijay Chander
- */
-#ifndef _IA64_PLATFORM_HPSIM_SSC_H
-#define _IA64_PLATFORM_HPSIM_SSC_H
-
-/* Simulator system calls: */
-
-#define SSC_CONSOLE_INIT 20
-#define SSC_GETCHAR 21
-#define SSC_PUTCHAR 31
-#define SSC_CONNECT_INTERRUPT 58
-#define SSC_GENERATE_INTERRUPT 59
-#define SSC_SET_PERIODIC_INTERRUPT 60
-#define SSC_GET_RTC 65
-#define SSC_EXIT 66
-#define SSC_LOAD_SYMBOLS 69
-#define SSC_GET_TOD 74
-#define SSC_CTL_TRACE 76
-
-#define SSC_NETDEV_PROBE 100
-#define SSC_NETDEV_SEND 101
-#define SSC_NETDEV_RECV 102
-#define SSC_NETDEV_ATTACH 103
-#define SSC_NETDEV_DETACH 104
-
-/*
- * Simulator system call.
- */
-extern long ia64_ssc (long arg0, long arg1, long arg2, long arg3, int nr);
-
-#endif /* _IA64_PLATFORM_HPSIM_SSC_H */
diff -urN linux-2.5.8-pre3/arch/ia64/hp/sim/Makefile lia64-2.5.8-pre3/arch/ia64/hp/sim/Makefile
--- linux-2.5.8-pre3/arch/ia64/hp/sim/Makefile Wed Dec 31 16:00:00 1969
+++ lia64-2.5.8-pre3/arch/ia64/hp/sim/Makefile Thu Apr 11 16:29:28 2002
@@ -0,0 +1,19 @@
+#
+# ia64/platform/hp/sim/Makefile
+#
+# Copyright (C) 2002 Hewlett-Packard Co.
+# David Mosberger-Tang
+# Copyright (C) 1999 Silicon Graphics, Inc.
+# Copyright (C) Srinivasa Thirumalachar (sprasad@engr.sgi.com)
+#
+
+O_TARGET := sim.o
+
+obj-y := hpsim_console.o hpsim_irq.o hpsim_setup.o
+obj-$(CONFIG_IA64_GENERIC) += hpsim_machvec.o
+
+obj-$(CONFIG_HP_SIMETH) += simeth.o
+obj-$(CONFIG_HP_SIMSERIAL) += simserial.o
+obj-$(CONFIG_HP_SIMSCSI) += simscsi.o
+
+include $(TOPDIR)/Rules.make
diff -urN linux-2.5.8-pre3/arch/ia64/hp/sim/hpsim_console.c lia64-2.5.8-pre3/arch/ia64/hp/sim/hpsim_console.c
--- linux-2.5.8-pre3/arch/ia64/hp/sim/hpsim_console.c Wed Dec 31 16:00:00 1969
+++ lia64-2.5.8-pre3/arch/ia64/hp/sim/hpsim_console.c Thu Apr 11 16:28:40 2002
@@ -0,0 +1,64 @@
+/*
+ * Platform dependent support for HP simulator.
+ *
+ * Copyright (C) 1998, 1999, 2002 Hewlett-Packard Co
+ * David Mosberger-Tang
+ * Copyright (C) 1999 Vijay Chander
+ */
+#include
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+#include
+#include
+#include
+#include
+#include
+#include
+
+#include "hpsim_ssc.h"
+
+static int simcons_init (struct console *, char *);
+static void simcons_write (struct console *, const char *, unsigned);
+static kdev_t simcons_console_device (struct console *);
+
+struct console hpsim_cons = {
+ name: "simcons",
+ write: simcons_write,
+ device: simcons_console_device,
+ setup: simcons_init,
+ flags: CON_PRINTBUFFER,
+ index: -1,
+};
+
+static int
+simcons_init (struct console *cons, char *options)
+{
+ return 0;
+}
+
+static void
+simcons_write (struct console *cons, const char *buf, unsigned count)
+{
+ unsigned long ch;
+
+ while (count-- > 0) {
+ ch = *buf++;
+ ia64_ssc(ch, 0, 0, 0, SSC_PUTCHAR);
+ if (ch == '\n')
+ ia64_ssc('\r', 0, 0, 0, SSC_PUTCHAR);
+ }
+}
+
+static kdev_t
+simcons_console_device (struct console *c)
+{
+ return mk_kdev(TTY_MAJOR, 64 + c->index);
+}
diff -urN linux-2.5.8-pre3/arch/ia64/hp/sim/hpsim_irq.c lia64-2.5.8-pre3/arch/ia64/hp/sim/hpsim_irq.c
--- linux-2.5.8-pre3/arch/ia64/hp/sim/hpsim_irq.c Wed Dec 31 16:00:00 1969
+++ lia64-2.5.8-pre3/arch/ia64/hp/sim/hpsim_irq.c Thu Apr 11 16:29:02 2002
@@ -0,0 +1,46 @@
+/*
+ * Platform dependent support for HP simulator.
+ *
+ * Copyright (C) 1998-2001 Hewlett-Packard Co
+ * Copyright (C) 1998-2001 David Mosberger-Tang
+ */
+
+#include
+#include
+#include
+#include
+
+static unsigned int
+hpsim_irq_startup (unsigned int irq)
+{
+ return 0;
+}
+
+static void
+hpsim_irq_noop (unsigned int irq)
+{
+}
+
+static struct hw_interrupt_type irq_type_hp_sim = {
+ typename: "hpsim",
+ startup: hpsim_irq_startup,
+ shutdown: hpsim_irq_noop,
+ enable: hpsim_irq_noop,
+ disable: hpsim_irq_noop,
+ ack: hpsim_irq_noop,
+ end: hpsim_irq_noop,
+ set_affinity: (void (*)(unsigned int, unsigned long)) hpsim_irq_noop,
+};
+
+void __init
+hpsim_irq_init (void)
+{
+ irq_desc_t *idesc;
+ int i;
+
+ for (i = 0; i < NR_IRQS; ++i) {
+ idesc = irq_desc(i);
+ if (idesc->handler == &no_irq_type)
+ idesc->handler = &irq_type_hp_sim;
+ }
+}
diff -urN linux-2.5.8-pre3/arch/ia64/hp/sim/hpsim_machvec.c lia64-2.5.8-pre3/arch/ia64/hp/sim/hpsim_machvec.c
--- linux-2.5.8-pre3/arch/ia64/hp/sim/hpsim_machvec.c Wed Dec 31 16:00:00 1969
+++ lia64-2.5.8-pre3/arch/ia64/hp/sim/hpsim_machvec.c Thu Apr 11 16:29:21 2002
@@ -0,0 +1,2 @@
+#define MACHVEC_PLATFORM_NAME hpsim
+#include
diff -urN linux-2.5.8-pre3/arch/ia64/hp/sim/hpsim_setup.c lia64-2.5.8-pre3/arch/ia64/hp/sim/hpsim_setup.c
--- linux-2.5.8-pre3/arch/ia64/hp/sim/hpsim_setup.c Wed Dec 31 16:00:00 1969
+++ lia64-2.5.8-pre3/arch/ia64/hp/sim/hpsim_setup.c Thu Apr 11 16:29:28 2002
@@ -0,0 +1,58 @@
+/*
+ * Platform dependent support for HP simulator.
+ *
+ * Copyright (C) 1998, 1999 Hewlett-Packard Co
+ * Copyright (C) 1998, 1999 David Mosberger-Tang
+ * Copyright (C) 1999 Vijay Chander
+ */
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+#include
+#include
+#include
+#include
+#include
+#include
+
+#include "hpsim_ssc.h"
+
+extern struct console hpsim_cons;
+
+/*
+ * Simulator system call.
+ */
+asm (".text\n"
+ ".align 32\n"
+ ".global ia64_ssc\n"
+ ".proc ia64_ssc\n"
+ "ia64_ssc:\n"
+ "mov r15=r36\n"
+ "break 0x80001\n"
+ "br.ret.sptk.many rp\n"
+ ".endp\n");
+
+void
+ia64_ssc_connect_irq (long intr, long irq)
+{
+ ia64_ssc(intr, irq, 0, 0, SSC_CONNECT_INTERRUPT);
+}
+
+void
+ia64_ctl_trace (long on)
+{
+ ia64_ssc(on, 0, 0, 0, SSC_CTL_TRACE);
+}
+
+void __init
+hpsim_setup (char **cmdline_p)
+{
+ ROOT_DEV = to_kdev_t(0x0801); /* default to first SCSI drive */
+
+ register_console (&hpsim_cons);
+}
diff -urN linux-2.5.8-pre3/arch/ia64/hp/sim/hpsim_ssc.h lia64-2.5.8-pre3/arch/ia64/hp/sim/hpsim_ssc.h
--- linux-2.5.8-pre3/arch/ia64/hp/sim/hpsim_ssc.h Wed Dec 31 16:00:00 1969
+++ lia64-2.5.8-pre3/arch/ia64/hp/sim/hpsim_ssc.h Thu Apr 11 16:29:36 2002
@@ -0,0 +1,36 @@
+/*
+ * Platform dependent support for HP simulator.
+ *
+ * Copyright (C) 1998, 1999 Hewlett-Packard Co
+ * Copyright (C) 1998, 1999 David Mosberger-Tang
+ * Copyright (C) 1999 Vijay Chander
+ */
+#ifndef _IA64_PLATFORM_HPSIM_SSC_H
+#define _IA64_PLATFORM_HPSIM_SSC_H
+
+/* Simulator system calls: */
+
+#define SSC_CONSOLE_INIT 20
+#define SSC_GETCHAR 21
+#define SSC_PUTCHAR 31
+#define SSC_CONNECT_INTERRUPT 58
+#define SSC_GENERATE_INTERRUPT 59
+#define SSC_SET_PERIODIC_INTERRUPT 60
+#define SSC_GET_RTC 65
+#define SSC_EXIT 66
+#define SSC_LOAD_SYMBOLS 69
+#define SSC_GET_TOD 74
+#define SSC_CTL_TRACE 76
+
+#define SSC_NETDEV_PROBE 100
+#define SSC_NETDEV_SEND 101
+#define SSC_NETDEV_RECV 102
+#define SSC_NETDEV_ATTACH 103
+#define SSC_NETDEV_DETACH 104
+
+/*
+ * Simulator system call.
+ */
+extern long ia64_ssc (long arg0, long arg1, long arg2, long arg3, int nr);
+
+#endif /* _IA64_PLATFORM_HPSIM_SSC_H */
diff -urN linux-2.5.8-pre3/arch/ia64/hp/sim/simeth.c lia64-2.5.8-pre3/arch/ia64/hp/sim/simeth.c
--- linux-2.5.8-pre3/arch/ia64/hp/sim/simeth.c Wed Dec 31 16:00:00 1969
+++ lia64-2.5.8-pre3/arch/ia64/hp/sim/simeth.c Thu Apr 11 16:28:16 2002
@@ -0,0 +1,533 @@
+/*
+ * Simulated Ethernet Driver
+ *
+ * Copyright (C) 1999-2001 Hewlett-Packard Co
+ * Stephane Eranian
+ */
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+#define SIMETH_RECV_MAX 10
+
+/*
+ * Maximum possible received frame for Ethernet.
+ * We preallocate an sk_buff of that size to avoid costly
+ * memcpy for temporary buffer into sk_buff. We do basically
+ * what's done in other drivers, like eepro with a ring.
+ * The difference is, of course, that we don't have real DMA !!!
+ */
+#define SIMETH_FRAME_SIZE ETH_FRAME_LEN
+
+
+#define SSC_NETDEV_PROBE 100
+#define SSC_NETDEV_SEND 101
+#define SSC_NETDEV_RECV 102
+#define SSC_NETDEV_ATTACH 103
+#define SSC_NETDEV_DETACH 104
+
+#define NETWORK_INTR 8
+
+struct simeth_local {
+ struct net_device_stats stats;
+ int simfd; /* descriptor in the simulator */
+};
+
+static int simeth_probe1(void);
+static int simeth_open(struct net_device *dev);
+static int simeth_close(struct net_device *dev);
+static int simeth_tx(struct sk_buff *skb, struct net_device *dev);
+static int simeth_rx(struct net_device *dev);
+static struct net_device_stats *simeth_get_stats(struct net_device *dev);
+static void simeth_interrupt(int irq, void *dev_id, struct pt_regs * regs);
+static void set_multicast_list(struct net_device *dev);
+static int simeth_device_event(struct notifier_block *this,unsigned long event, void *ptr);
+
+static char *simeth_version="0.3";
+
+/*
+ * This variable is used to establish a mapping between the Linux/ia64 kernel
+ * and the host linux kernel.
+ *
+ * As of today, we support only one card, even though most of the code
+ * is ready for many more. The mapping is then:
+ * linux/ia64 -> linux/x86
+ * eth0 -> eth1
+ *
+ * In the future, we some string operations, we could easily support up
+ * to 10 cards (0-9).
+ *
+ * The default mapping can be changed on the kernel command line by
+ * specifying simeth=ethX (or whatever string you want).
+ */
+static char *simeth_device="eth0"; /* default host interface to use */
+
+
+
+static volatile unsigned int card_count; /* how many cards "found" so far */
+static int simeth_debug; /* set to 1 to get debug information */
+
+/*
+ * Used to catch IFF_UP & IFF_DOWN events
+ */
+static struct notifier_block simeth_dev_notifier = {
+ simeth_device_event,
+ 0
+};
+
+
+/*
+ * Function used when using a kernel command line option.
+ *
+ * Format: simeth=interface_name (like eth0)
+ */
+static int __init
+simeth_setup(char *str)
+{
+ simeth_device = str;
+ return 1;
+}
+
+__setup("simeth=", simeth_setup);
+
+/*
+ * Function used to probe for simeth devices when not installed
+ * as a loadable module
+ */
+
+int __init
+simeth_probe (void)
+{
+ int r;
+
+ printk("simeth: v%s\n", simeth_version);
+
+ r = simeth_probe1();
+
+ if (r == 0) register_netdevice_notifier(&simeth_dev_notifier);
+
+ return r;
+}
+
+extern long ia64_ssc (long, long, long, long, int);
+extern void ia64_ssc_connect_irq (long intr, long irq);
+
+static inline int
+netdev_probe(char *name, unsigned char *ether)
+{
+ return ia64_ssc(__pa(name), __pa(ether), 0,0, SSC_NETDEV_PROBE);
+}
+
+
+static inline int
+netdev_connect(int irq)
+{
+ /* XXX Fix me
+ * this does not support multiple cards
+ * also no return value
+ */
+ ia64_ssc_connect_irq(NETWORK_INTR, irq);
+ return 0;
+}
+
+static inline int
+netdev_attach(int fd, int irq, unsigned int ipaddr)
+{
+ /* this puts the host interface in the right mode (start interupting) */
+ return ia64_ssc(fd, ipaddr, 0,0, SSC_NETDEV_ATTACH);
+}
+
+
+static inline int
+netdev_detach(int fd)
+{
+ /*
+ * inactivate the host interface (don't interrupt anymore) */
+ return ia64_ssc(fd, 0,0,0, SSC_NETDEV_DETACH);
+}
+
+static inline int
+netdev_send(int fd, unsigned char *buf, unsigned int len)
+{
+ return ia64_ssc(fd, __pa(buf), len, 0, SSC_NETDEV_SEND);
+}
+
+static inline int
+netdev_read(int fd, unsigned char *buf, unsigned int len)
+{
+ return ia64_ssc(fd, __pa(buf), len, 0, SSC_NETDEV_RECV);
+}
+
+/*
+ * Function shared with module code, so cannot be in init section
+ *
+ * So far this function "detects" only one card (test_&_set) but could
+ * be extended easily.
+ *
+ * Return:
+ * - -ENODEV is no device found
+ * - -ENOMEM is no more memory
+ * - 0 otherwise
+ */
+static int
+simeth_probe1(void)
+{
+ unsigned char mac_addr[ETH_ALEN];
+ struct simeth_local *local;
+ struct net_device *dev;
+ int fd, i;
+
+ /*
+ * XXX Fix me
+ * let's support just one card for now
+ */
+ if (test_and_set_bit(0, &card_count))
+ return -ENODEV;
+
+ /*
+ * check with the simulator for the device
+ */
+ fd = netdev_probe(simeth_device, mac_addr);
+ if (fd == -1)
+ return -ENODEV;
+
+ dev = init_etherdev(NULL, sizeof(struct simeth_local));
+ if (!dev)
+ return -ENOMEM;
+
+ memcpy(dev->dev_addr, mac_addr, sizeof(mac_addr));
+
+ dev->irq = ia64_alloc_irq();
+
+ /*
+ * attach the interrupt in the simulator, this does enable interrupts
+ * until a netdev_attach() is called
+ */
+ netdev_connect(dev->irq);
+
+ memset(dev->priv, 0, sizeof(struct simeth_local));
+
+ local = dev->priv;
+ local->simfd = fd; /* keep track of underlying file descriptor */
+
+ dev->open = simeth_open;
+ dev->stop = simeth_close;
+ dev->hard_start_xmit = simeth_tx;
+ dev->get_stats = simeth_get_stats;
+ dev->set_multicast_list = set_multicast_list; /* no yet used */
+
+ /* Fill in the fields of the device structure with ethernet-generic values. */
+ ether_setup(dev);
+
+ printk("%s: hosteth=%s simfd=%d, HwAddr", dev->name, simeth_device, local->simfd);
+ for(i = 0; i < ETH_ALEN; i++) {
+ printk(" %2.2x", dev->dev_addr[i]);
+ }
+ printk(", IRQ %d\n", dev->irq);
+
+ return 0;
+}
+
+/*
+ * actually binds the device to an interrupt vector
+ */
+static int
+simeth_open(struct net_device *dev)
+{
+ if (request_irq(dev->irq, simeth_interrupt, 0, "simeth", dev)) {
+ printk ("simeth: unable to get IRQ %d.\n", dev->irq);
+ return -EAGAIN;
+ }
+
+ netif_start_queue(dev);
+
+ return 0;
+}
+
+/* copied from lapbether.c */
+static __inline__ int dev_is_ethdev(struct net_device *dev)
+{
+ return ( dev->type == ARPHRD_ETHER && strncmp(dev->name, "dummy", 5));
+}
+
+
+/*
+ * Handler for IFF_UP or IFF_DOWN
+ *
+ * The reason for that is that we don't want to be interrupted when the
+ * interface is down. There is no way to unconnect in the simualtor. Instead
+ * we use this function to shutdown packet processing in the frame filter
+ * in the simulator. Thus no interrupts are generated
+ *
+ *
+ * That's also the place where we pass the IP address of this device to the
+ * simulator so that that we can start filtering packets for it
+ *
+ * There may be a better way of doing this, but I don't know which yet.
+ */
+static int
+simeth_device_event(struct notifier_block *this,unsigned long event, void *ptr)
+{
+ struct net_device *dev = (struct net_device *)ptr;
+ struct simeth_local *local;
+ struct in_device *in_dev;
+ struct in_ifaddr **ifap = NULL;
+ struct in_ifaddr *ifa = NULL;
+ int r;
+
+
+ if ( ! dev ) {
+ printk(KERN_WARNING "simeth_device_event dev=0\n");
+ return NOTIFY_DONE;
+ }
+
+ if ( event != NETDEV_UP && event != NETDEV_DOWN ) return NOTIFY_DONE;
+
+ /*
+ * Check whether or not it's for an ethernet device
+ *
+ * XXX Fixme: This works only as long as we support one
+ * type of ethernet device.
+ */
+ if ( !dev_is_ethdev(dev) ) return NOTIFY_DONE;
+
+ if ((in_dev=dev->ip_ptr) != NULL) {
+ for (ifap=&in_dev->ifa_list; (ifa=*ifap) != NULL; ifap=&ifa->ifa_next)
+ if (strcmp(dev->name, ifa->ifa_label) == 0) break;
+ }
+ if ( ifa == NULL ) {
+ printk("simeth_open: can't find device %s's ifa\n", dev->name);
+ return NOTIFY_DONE;
+ }
+
+ printk("simeth_device_event: %s ipaddr=0x%x\n", dev->name, htonl(ifa->ifa_local));
+
+ /*
+ * XXX Fix me
+ * if the device was up, and we're simply reconfiguring it, not sure
+ * we get DOWN then UP.
+ */
+
+ local = dev->priv;
+ /* now do it for real */
+ r = event == NETDEV_UP ?
+ netdev_attach(local->simfd, dev->irq, htonl(ifa->ifa_local)):
+ netdev_detach(local->simfd);
+
+ printk("simeth: netdev_attach/detach: event=%s ->%d\n", event == NETDEV_UP ? "attach":"detach", r);
+
+ return NOTIFY_DONE;
+}
+
+static int
+simeth_close(struct net_device *dev)
+{
+ netif_stop_queue(dev);
+
+ free_irq(dev->irq, dev);
+
+ return 0;
+}
+
+/*
+ * Only used for debug
+ */
+static void
+frame_print(unsigned char *from, unsigned char *frame, int len)
+{
+ int i;
+
+ printk("%s: (%d) %02x", from, len, frame[0] & 0xff);
+ for(i=1; i < 6; i++ ) {
+ printk(":%02x", frame[i] &0xff);
+ }
+ printk(" %2x", frame[6] &0xff);
+ for(i=7; i < 12; i++ ) {
+ printk(":%02x", frame[i] &0xff);
+ }
+ printk(" [%02x%02x]\n", frame[12], frame[13]);
+
+ for(i=14; i < len; i++ ) {
+ printk("%02x ", frame[i] &0xff);
+ if ( (i%10)==0) printk("\n");
+ }
+ printk("\n");
+}
+
+
+/*
+ * Function used to transmit of frame, very last one on the path before
+ * going to the simulator.
+ */
+static int
+simeth_tx(struct sk_buff *skb, struct net_device *dev)
+{
+ struct simeth_local *local = (struct simeth_local *)dev->priv;
+
+#if 0
+ /* ensure we have at least ETH_ZLEN bytes (min frame size) */
+ unsigned int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
+ /* Where do the extra padding bytes comes from inthe skbuff ? */
+#else
+ /* the real driver in the host system is going to take care of that
+ * or maybe it's the NIC itself.
+ */
+ unsigned int length = skb->len;
+#endif
+
+ local->stats.tx_bytes += skb->len;
+ local->stats.tx_packets++;
+
+
+ if (simeth_debug > 5) frame_print("simeth_tx", skb->data, length);
+
+ netdev_send(local->simfd, skb->data, length);
+
+ /*
+ * we are synchronous on write, so we don't simulate a
+ * trasnmit complete interrupt, thus we don't need to arm a tx
+ */
+
+ dev_kfree_skb(skb);
+ return 0;
+}
+
+static inline struct sk_buff *
+make_new_skb(struct net_device *dev)
+{
+ struct sk_buff *nskb;
+
+ /*
+ * The +2 is used to make sure that the IP header is nicely
+ * aligned (on 4byte boundary I assume 14+2=16)
+ */
+ nskb = dev_alloc_skb(SIMETH_FRAME_SIZE + 2);
+ if ( nskb == NULL ) {
+ printk(KERN_NOTICE "%s: memory squeeze. dropping packet.\n", dev->name);
+ return NULL;
+ }
+ nskb->dev = dev;
+
+ skb_reserve(nskb, 2); /* Align IP on 16 byte boundaries */
+
+ skb_put(nskb,SIMETH_FRAME_SIZE);
+
+ return nskb;
+}
+
+/*
+ * called from interrupt handler to process a received frame
+ */
+static int
+simeth_rx(struct net_device *dev)
+{
+ struct simeth_local *local;
+ struct sk_buff *skb;
+ int len;
+ int rcv_count = SIMETH_RECV_MAX;
+
+ local = (struct simeth_local *)dev->priv;
+ /*
+ * the loop concept has been borrowed from other drivers
+ * looks to me like it's a throttling thing to avoid pushing to many
+ * packets at one time into the stack. Making sure we can process them
+ * upstream and make forward progress overall
+ */
+ do {
+ if ( (skb=make_new_skb(dev)) == NULL ) {
+ printk(KERN_NOTICE "%s: memory squeeze. dropping packet.\n", dev->name);
+ local->stats.rx_dropped++;
+ return 0;
+ }
+ /*
+ * Read only one frame at a time
+ */
+ len = netdev_read(local->simfd, skb->data, SIMETH_FRAME_SIZE);
+ if ( len == 0 ) {
+ if ( simeth_debug > 0 ) printk(KERN_WARNING "%s: count=%d netdev_read=0\n", dev->name, SIMETH_RECV_MAX-rcv_count);
+ break;
+ }
+#if 0
+ /*
+ * XXX Fix me
+ * Should really do a csum+copy here
+ */
+ memcpy(skb->data, frame, len);
+#endif
+ skb->protocol = eth_type_trans(skb, dev);
+
+ if ( simeth_debug > 6 ) frame_print("simeth_rx", skb->data, len);
+
+ /*
+ * push the packet up & trigger software interrupt
+ */
+ netif_rx(skb);
+
+ local->stats.rx_packets++;
+ local->stats.rx_bytes += len;
+
+ } while ( --rcv_count );
+
+ return len; /* 0 = nothing left to read, otherwise, we can try again */
+}
+
+/*
+ * Interrupt handler (Yes, we can do it too !!!)
+ */
+static void
+simeth_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+{
+ struct net_device *dev = dev_id;
+
+ if ( dev == NULL ) {
+ printk(KERN_WARNING "simeth: irq %d for unknown device\n", irq);
+ return;
+ }
+
+ /*
+ * very simple loop because we get interrupts only when receving
+ */
+ while (simeth_rx(dev));
+}
+
+static struct net_device_stats *
+simeth_get_stats(struct net_device *dev)
+{
+ struct simeth_local *local = (struct simeth_local *) dev->priv;
+
+ return &local->stats;
+}
+
+/* fake multicast ability */
+static void
+set_multicast_list(struct net_device *dev)
+{
+ printk(KERN_WARNING "%s: set_multicast_list called\n", dev->name);
+}
+
+#ifdef CONFIG_NET_FASTROUTE
+static int
+simeth_accept_fastpath(struct net_device *dev, struct dst_entry *dst)
+{
+ printk(KERN_WARNING "%s: simeth_accept_fastpath called\n", dev->name);
+ return -1;
+}
+#endif
+
+__initcall(simeth_probe);
diff -urN linux-2.5.8-pre3/arch/ia64/hp/sim/simscsi.c lia64-2.5.8-pre3/arch/ia64/hp/sim/simscsi.c
--- linux-2.5.8-pre3/arch/ia64/hp/sim/simscsi.c Wed Dec 31 16:00:00 1969
+++ lia64-2.5.8-pre3/arch/ia64/hp/sim/simscsi.c Thu Apr 11 16:28:51 2002
@@ -0,0 +1,368 @@
+/*
+ * Simulated SCSI driver.
+ *
+ * Copyright (C) 1999, 2001-2002 Hewlett-Packard Co
+ * David Mosberger-Tang
+ * Stephane Eranian
+ *
+ * 02/01/15 David Mosberger Updated for v2.5.1
+ * 99/12/18 David Mosberger Added support for READ10/WRITE10 needed by linux v2.3.33
+ */
+#include
+#include
+#include
+#include
+#include
+#include
+
+#include
+
+#include
+
+#include "../drivers/scsi/scsi.h"
+#include "../drivers/scsi/sd.h"
+#include "../drivers/scsi/hosts.h"
+#include "simscsi.h"
+
+#define DEBUG_SIMSCSI 1
+
+/* Simulator system calls: */
+
+#define SSC_OPEN 50
+#define SSC_CLOSE 51
+#define SSC_READ 52
+#define SSC_WRITE 53
+#define SSC_GET_COMPLETION 54
+#define SSC_WAIT_COMPLETION 55
+
+#define SSC_WRITE_ACCESS 2
+#define SSC_READ_ACCESS 1
+
+#if DEBUG_SIMSCSI
+ int simscsi_debug;
+# define DBG simscsi_debug
+#else
+# define DBG 0
+#endif
+
+static struct Scsi_Host *host;
+
+static void simscsi_interrupt (unsigned long val);
+DECLARE_TASKLET(simscsi_tasklet, simscsi_interrupt, 0);
+
+struct disk_req {
+ unsigned long addr;
+ unsigned len;
+};
+
+struct disk_stat {
+ int fd;
+ unsigned count;
+};
+
+extern long ia64_ssc (long arg0, long arg1, long arg2, long arg3, int nr);
+
+static int desc[8] = { -1, -1, -1, -1, -1, -1, -1, -1 };
+
+static struct queue_entry {
+ Scsi_Cmnd *sc;
+} queue[SIMSCSI_REQ_QUEUE_LEN];
+
+static int rd, wr;
+static atomic_t num_reqs = ATOMIC_INIT(0);
+
+/* base name for default disks */
+static char *simscsi_root = DEFAULT_SIMSCSI_ROOT;
+
+#define MAX_ROOT_LEN 128
+
+/*
+ * used to setup a new base for disk images
+ * to use /foo/bar/disk[a-z] as disk images
+ * you have to specify simscsi=/foo/bar/disk on the command line
+ */
+static int __init
+simscsi_setup (char *s)
+{
+ /* XXX Fix me we may need to strcpy() ? */
+ if (strlen(s) > MAX_ROOT_LEN) {
+ printk("simscsi_setup: prefix too long---using default %s\n", simscsi_root);
+ }
+ simscsi_root = s;
+ return 1;
+}
+
+__setup("simscsi=", simscsi_setup);
+
+static void
+simscsi_interrupt (unsigned long val)
+{
+ Scsi_Cmnd *sc;
+
+ while ((sc = queue[rd].sc) != 0) {
+ atomic_dec(&num_reqs);
+ queue[rd].sc = 0;
+ if (DBG)
+ printk("simscsi_interrupt: done with %ld\n", sc->serial_number);
+ (*sc->scsi_done)(sc);
+ rd = (rd + 1) % SIMSCSI_REQ_QUEUE_LEN;
+ }
+}
+
+int
+simscsi_detect (Scsi_Host_Template *templ)
+{
+ templ->proc_name = "simscsi";
+ host = scsi_register(templ, 0);
+ return 1; /* fake one SCSI host adapter */
+}
+
+int
+simscsi_release (struct Scsi_Host *host)
+{
+ return 0; /* this is easy... */
+}
+
+const char *
+simscsi_info (struct Scsi_Host *host)
+{
+ return "simulated SCSI host adapter";
+}
+
+int
+simscsi_abort (Scsi_Cmnd *cmd)
+{
+ printk ("simscsi_abort: unimplemented\n");
+ return SCSI_ABORT_SUCCESS;
+}
+
+int
+simscsi_reset (Scsi_Cmnd *cmd, unsigned int reset_flags)
+{
+ printk ("simscsi_reset: unimplemented\n");
+ return SCSI_RESET_SUCCESS;
+}
+
+int
+simscsi_biosparam (Disk *disk, kdev_t n, int ip[])
+{
+ int size = disk->capacity;
+
+ ip[0] = 64;
+ ip[1] = 32;
+ ip[2] = size >> 11;
+ return 0;
+}
+
+static void
+simscsi_readwrite (Scsi_Cmnd *sc, int mode, unsigned long offset, unsigned long len)
+{
+ struct disk_stat stat;
+ struct disk_req req;
+
+ req.addr = __pa(sc->request_buffer);
+ req.len = len; /* # of bytes to transfer */
+
+ if (sc->request_bufflen < req.len)
+ return;
+
+ stat.fd = desc[sc->target];
+ if (DBG)
+ printk("simscsi_%s @ %lx (off %lx)\n",
+ mode == SSC_READ ? "read":"write", req.addr, offset);
+ ia64_ssc(stat.fd, 1, __pa(&req), offset, mode);
+ ia64_ssc(__pa(&stat), 0, 0, 0, SSC_WAIT_COMPLETION);
+
+ if (stat.count == req.len) {
+ sc->result = GOOD;
+ } else {
+ sc->result = DID_ERROR << 16;
+ }
+}
+
+static void
+simscsi_sg_readwrite (Scsi_Cmnd *sc, int mode, unsigned long offset)
+{
+ int list_len = sc->use_sg;
+ struct scatterlist *sl = (struct scatterlist *)sc->buffer;
+ struct disk_stat stat;
+ struct disk_req req;
+
+ stat.fd = desc[sc->target];
+
+ while (list_len) {
+ req.addr = __pa(page_address(sl->page) + sl->offset);
+ req.len = sl->length;
+ if (DBG)
+ printk("simscsi_sg_%s @ %lx (off %lx) use_sg=%d len=%d\n",
+ mode == SSC_READ ? "read":"write", req.addr, offset,
+ list_len, sl->length);
+ ia64_ssc(stat.fd, 1, __pa(&req), offset, mode);
+ ia64_ssc(__pa(&stat), 0, 0, 0, SSC_WAIT_COMPLETION);
+
+ /* should not happen in our case */
+ if (stat.count != req.len) {
+ sc->result = DID_ERROR << 16;
+ return;
+ }
+ offset += sl->length;
+ sl++;
+ list_len--;
+ }
+ sc->result = GOOD;
+}
+
+/*
+ * function handling both READ_6/WRITE_6 (non-scatter/gather mode)
+ * commands.
+ * Added 02/26/99 S.Eranian
+ */
+static void
+simscsi_readwrite6 (Scsi_Cmnd *sc, int mode)
+{
+ unsigned long offset;
+
+ offset = (((sc->cmnd[1] & 0x1f) << 16) | (sc->cmnd[2] << 8) | sc->cmnd[3])*512;
+ if (sc->use_sg > 0)
+ simscsi_sg_readwrite(sc, mode, offset);
+ else
+ simscsi_readwrite(sc, mode, offset, sc->cmnd[4]*512);
+}
+
+
+static void
+simscsi_readwrite10 (Scsi_Cmnd *sc, int mode)
+{
+ unsigned long offset;
+
+ offset = ( (sc->cmnd[2] << 24) | (sc->cmnd[3] << 16)
+ | (sc->cmnd[4] << 8) | (sc->cmnd[5] << 0))*512;
+ if (sc->use_sg > 0)
+ simscsi_sg_readwrite(sc, mode, offset);
+ else
+ simscsi_readwrite(sc, mode, offset, ((sc->cmnd[7] << 8) | sc->cmnd[8])*512);
+}
+
+int
+simscsi_queuecommand (Scsi_Cmnd *sc, void (*done)(Scsi_Cmnd *))
+{
+ char fname[MAX_ROOT_LEN+16];
+ char *buf;
+#if DEBUG_SIMSCSI
+ register long sp asm ("sp");
+
+ if (DBG)
+ printk("simscsi_queuecommand: target=%d,cmnd=%u,sc=%lu,sp=%lx,done=%p\n",
+ sc->target, sc->cmnd[0], sc->serial_number, sp, done);
+#endif
+
+ sc->result = DID_BAD_TARGET << 16;
+ sc->scsi_done = done;
+ if (sc->target <= 7 && sc->lun == 0) {
+ switch (sc->cmnd[0]) {
+ case INQUIRY:
+ if (sc->request_bufflen < 35) {
+ break;
+ }
+ sprintf (fname, "%s%c", simscsi_root, 'a' + sc->target);
+ desc[sc->target] = ia64_ssc (__pa(fname), SSC_READ_ACCESS|SSC_WRITE_ACCESS,
+ 0, 0, SSC_OPEN);
+ if (desc[sc->target] < 0) {
+ /* disk doesn't exist... */
+ break;
+ }
+ buf = sc->request_buffer;
+ buf[0] = 0; /* magnetic disk */
+ buf[1] = 0; /* not a removable medium */
+ buf[2] = 2; /* SCSI-2 compliant device */
+ buf[3] = 2; /* SCSI-2 response data format */
+ buf[4] = 31; /* additional length (bytes) */
+ buf[5] = 0; /* reserved */
+ buf[6] = 0; /* reserved */
+ buf[7] = 0; /* various flags */
+ memcpy(buf + 8, "HP SIMULATED DISK 0.00", 28);
+ sc->result = GOOD;
+ break;
+
+ case TEST_UNIT_READY:
+ sc->result = GOOD;
+ break;
+
+ case READ_6:
+ if (desc[sc->target] < 0 )
+ break;
+ simscsi_readwrite6(sc, SSC_READ);
+ break;
+
+ case READ_10:
+ if (desc[sc->target] < 0 )
+ break;
+ simscsi_readwrite10(sc, SSC_READ);
+ break;
+
+ case WRITE_6:
+ if (desc[sc->target] < 0)
+ break;
+ simscsi_readwrite6(sc, SSC_WRITE);
+ break;
+
+ case WRITE_10:
+ if (desc[sc->target] < 0)
+ break;
+ simscsi_readwrite10(sc, SSC_WRITE);
+ break;
+
+
+ case READ_CAPACITY:
+ if (desc[sc->target] < 0 || sc->request_bufflen < 8) {
+ break;
+ }
+ buf = sc->request_buffer;
+
+ /* pretend to be a 1GB disk (partition table contains real stuff): */
+ buf[0] = 0x00;
+ buf[1] = 0x1f;
+ buf[2] = 0xff;
+ buf[3] = 0xff;
+ /* set block size of 512 bytes: */
+ buf[4] = 0;
+ buf[5] = 0;
+ buf[6] = 2;
+ buf[7] = 0;
+ sc->result = GOOD;
+ break;
+
+ case MODE_SENSE:
+ printk("MODE_SENSE\n");
+ break;
+
+ case START_STOP:
+ printk("START_STOP\n");
+ break;
+
+ default:
+ panic("simscsi: unknown SCSI command %u\n", sc->cmnd[0]);
+ }
+ }
+ if (sc->result == DID_BAD_TARGET) {
+ sc->result |= DRIVER_SENSE << 24;
+ sc->sense_buffer[0] = 0x70;
+ sc->sense_buffer[2] = 0x00;
+ }
+ if (atomic_read(&num_reqs) >= SIMSCSI_REQ_QUEUE_LEN) {
+ panic("Attempt to queue command while command is pending!!");
+ }
+ atomic_inc(&num_reqs);
+ queue[wr].sc = sc;
+ wr = (wr + 1) % SIMSCSI_REQ_QUEUE_LEN;
+
+ tasklet_schedule(&simscsi_tasklet);
+ return 0;
+}
+
+
+static Scsi_Host_Template driver_template = SIMSCSI;
+
+#define __initcall(fn) late_initcall(fn)
+
+#include "../drivers/scsi/scsi_module.c"
diff -urN linux-2.5.8-pre3/arch/ia64/hp/sim/simscsi.h lia64-2.5.8-pre3/arch/ia64/hp/sim/simscsi.h
--- linux-2.5.8-pre3/arch/ia64/hp/sim/simscsi.h Wed Dec 31 16:00:00 1969
+++ lia64-2.5.8-pre3/arch/ia64/hp/sim/simscsi.h Thu Apr 11 16:28:10 2002
@@ -0,0 +1,39 @@
+/*
+ * Simulated SCSI driver.
+ *
+ * Copyright (C) 1999 Hewlett-Packard Co
+ * David Mosberger-Tang
+ */
+#ifndef SIMSCSI_H
+#define SIMSCSI_H
+
+#define SIMSCSI_REQ_QUEUE_LEN 64
+
+#define DEFAULT_SIMSCSI_ROOT "/var/ski-disks/sd"
+
+extern int simscsi_detect (Scsi_Host_Template *);
+extern int simscsi_release (struct Scsi_Host *);
+extern const char *simscsi_info (struct Scsi_Host *);
+extern int simscsi_queuecommand (Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
+extern int simscsi_abort (Scsi_Cmnd *);
+extern int simscsi_reset (Scsi_Cmnd *, unsigned int);
+extern int simscsi_biosparam (Disk *, kdev_t, int[]);
+
+#define SIMSCSI { \
+ detect: simscsi_detect, \
+ release: simscsi_release, \
+ info: simscsi_info, \
+ queuecommand: simscsi_queuecommand, \
+ abort: simscsi_abort, \
+ reset: simscsi_reset, \
+ bios_param: simscsi_biosparam, \
+ can_queue: SIMSCSI_REQ_QUEUE_LEN, \
+ this_id: -1, \
+ sg_tablesize: SG_ALL, \
+ cmd_per_lun: SIMSCSI_REQ_QUEUE_LEN, \
+ present: 0, \
+ unchecked_isa_dma: 0, \
+ use_clustering: DISABLE_CLUSTERING \
+}
+
+#endif /* SIMSCSI_H */
diff -urN linux-2.5.8-pre3/arch/ia64/hp/sim/simserial.c lia64-2.5.8-pre3/arch/ia64/hp/sim/simserial.c
--- linux-2.5.8-pre3/arch/ia64/hp/sim/simserial.c Wed Dec 31 16:00:00 1969
+++ lia64-2.5.8-pre3/arch/ia64/hp/sim/simserial.c Thu Apr 11 16:28:57 2002
@@ -0,0 +1,1104 @@
+/*
+ * Simulated Serial Driver (fake serial)
+ *
+ * This driver is mostly used for bringup purposes and will go away.
+ * It has a strong dependency on the system console. All outputs
+ * are rerouted to the same facility as the one used by printk which, in our
+ * case means sys_sim.c console (goes via the simulator). The code hereafter
+ * is completely leveraged from the serial.c driver.
+ *
+ * Copyright (C) 1999-2000 Hewlett-Packard Co
+ * Copyright (C) 1999 Stephane Eranian
+ * Copyright (C) 2000 David Mosberger-Tang
+ *
+ * 02/04/00 D. Mosberger Merged in serial.c bug fixes in rs_close().
+ * 02/25/00 D. Mosberger Synced up with 2.3.99pre-5 version of serial.c.
+ */
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+#include
+#include
+
+#ifdef CONFIG_KDB
+# include
+#endif
+
+#undef SIMSERIAL_DEBUG /* define this to get some debug information */
+
+#define KEYBOARD_INTR 3 /* must match with simulator! */
+
+#define NR_PORTS 1 /* only one port for now */
+#define SERIAL_INLINE 1
+
+#ifdef SERIAL_INLINE
+#define _INLINE_ inline
+#endif
+
+#ifndef MIN
+#define MIN(a,b) ((a) < (b) ? (a) : (b))
+#endif
+
+#define IRQ_T(info) ((info->flags & ASYNC_SHARE_IRQ) ? SA_SHIRQ : SA_INTERRUPT)
+
+#define SSC_GETCHAR 21
+
+extern long ia64_ssc (long, long, long, long, int);
+extern void ia64_ssc_connect_irq (long intr, long irq);
+
+static char *serial_name = "SimSerial driver";
+static char *serial_version = "0.6";
+
+/*
+ * This has been extracted from asm/serial.h. We need one eventually but
+ * I don't know exactly what we're going to put in it so just fake one
+ * for now.
+ */
+#define BASE_BAUD ( 1843200 / 16 )
+
+#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST)
+
+/*
+ * Most of the values here are meaningless to this particular driver.
+ * However some values must be preserved for the code (leveraged from serial.c
+ * to work correctly).
+ * port must not be 0
+ * type must not be UNKNOWN
+ * So I picked arbitrary (guess from where?) values instead
+ */
+static struct serial_state rs_table[NR_PORTS]={
+ /* UART CLK PORT IRQ FLAGS */
+ { 0, BASE_BAUD, 0x3F8, 0, STD_COM_FLAGS,0,PORT_16550 } /* ttyS0 */
+};
+
+/*
+ * Just for the fun of it !
+ */
+static struct serial_uart_config uart_config[] = {
+ { "unknown", 1, 0 },
+ { "8250", 1, 0 },
+ { "16450", 1, 0 },
+ { "16550", 1, 0 },
+ { "16550A", 16, UART_CLEAR_FIFO | UART_USE_FIFO },
+ { "cirrus", 1, 0 },
+ { "ST16650", 1, UART_CLEAR_FIFO | UART_STARTECH },
+ { "ST16650V2", 32, UART_CLEAR_FIFO | UART_USE_FIFO |
+ UART_STARTECH },
+ { "TI16750", 64, UART_CLEAR_FIFO | UART_USE_FIFO},
+ { 0, 0}
+};
+
+static struct tty_driver serial_driver, callout_driver;
+static int serial_refcount;
+
+static struct async_struct *IRQ_ports[NR_IRQS];
+static struct tty_struct *serial_table[NR_PORTS];
+static struct termios *serial_termios[NR_PORTS];
+static struct termios *serial_termios_locked[NR_PORTS];
+
+static struct console *console;
+
+static unsigned char *tmp_buf;
+static DECLARE_MUTEX(tmp_buf_sem);
+
+extern struct console *console_drivers; /* from kernel/printk.c */
+
+/*
+ * ------------------------------------------------------------
+ * rs_stop() and rs_start()
+ *
+ * This routines are called before setting or resetting tty->stopped.
+ * They enable or disable transmitter interrupts, as necessary.
+ * ------------------------------------------------------------
+ */
+static void rs_stop(struct tty_struct *tty)
+{
+#ifdef SIMSERIAL_DEBUG
+ printk("rs_stop: tty->stopped=%d tty->hw_stopped=%d tty->flow_stopped=%d\n",
+ tty->stopped, tty->hw_stopped, tty->flow_stopped);
+#endif
+
+}
+
+static void rs_start(struct tty_struct *tty)
+{
+#if SIMSERIAL_DEBUG
+ printk("rs_start: tty->stopped=%d tty->hw_stopped=%d tty->flow_stopped=%d\n",
+ tty->stopped, tty->hw_stopped, tty->flow_stopped);
+#endif
+}
+
+static void receive_chars(struct tty_struct *tty, struct pt_regs *regs)
+{
+ unsigned char ch;
+ static unsigned char seen_esc = 0;
+
+ while ( (ch = ia64_ssc(0, 0, 0, 0, SSC_GETCHAR)) ) {
+ if ( ch == 27 && seen_esc == 0 ) {
+ seen_esc = 1;
+ continue;
+ } else {
+ if ( seen_esc==1 && ch == 'O' ) {
+ seen_esc = 2;
+ continue;
+ } else if ( seen_esc == 2 ) {
+ if ( ch == 'P' ) show_state(); /* F1 key */
+ if ( ch == 'Q' ) show_buffers(); /* F2 key */
+#ifdef CONFIG_KDB
+ if ( ch == 'S' )
+ kdb(KDB_REASON_KEYBOARD, 0, (kdb_eframe_t) regs);
+#endif
+
+ seen_esc = 0;
+ continue;
+ }
+ }
+ seen_esc = 0;
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE) break;
+
+ *tty->flip.char_buf_ptr = ch;
+
+ *tty->flip.flag_buf_ptr = 0;
+
+ tty->flip.flag_buf_ptr++;
+ tty->flip.char_buf_ptr++;
+ tty->flip.count++;
+ }
+ tty_flip_buffer_push(tty);
+}
+
+/*
+ * This is the serial driver's interrupt routine for a single port
+ */
+static void rs_interrupt_single(int irq, void *dev_id, struct pt_regs * regs)
+{
+ struct async_struct * info;
+
+ /*
+ * I don't know exactly why they don't use the dev_id opaque data
+ * pointer instead of this extra lookup table
+ */
+ info = IRQ_ports[irq];
+ if (!info || !info->tty) {
+ printk("simrs_interrupt_single: info|tty=0 info=%p problem\n", info);
+ return;
+ }
+ /*
+ * pretty simple in our case, because we only get interrupts
+ * on inbound traffic
+ */
+ receive_chars(info->tty, regs);
+}
+
+/*
+ * -------------------------------------------------------------------
+ * Here ends the serial interrupt routines.
+ * -------------------------------------------------------------------
+ */
+
+#if 0
+/*
+ * not really used in our situation so keep them commented out for now
+ */
+static DECLARE_TASK_QUEUE(tq_serial); /* used to be at the top of the file */
+static void do_serial_bh(void)
+{
+ run_task_queue(&tq_serial);
+ printk("do_serial_bh: called\n");
+}
+#endif
+
+static void do_softint(void *private_)
+{
+ printk("simserial: do_softint called\n");
+}
+
+static void rs_put_char(struct tty_struct *tty, unsigned char ch)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+ unsigned long flags;
+
+ if (!tty || !info->xmit.buf) return;
+
+ save_flags(flags); cli();
+ if (CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE) == 0) {
+ restore_flags(flags);
+ return;
+ }
+ info->xmit.buf[info->xmit.head] = ch;
+ info->xmit.head = (info->xmit.head + 1) & (SERIAL_XMIT_SIZE-1);
+ restore_flags(flags);
+}
+
+static _INLINE_ void transmit_chars(struct async_struct *info, int *intr_done)
+{
+ int count;
+ unsigned long flags;
+
+ save_flags(flags); cli();
+
+ if (info->x_char) {
+ char c = info->x_char;
+
+ console->write(console, &c, 1);
+
+ info->state->icount.tx++;
+ info->x_char = 0;
+
+ goto out;
+ }
+
+ if (info->xmit.head == info->xmit.tail || info->tty->stopped || info->tty->hw_stopped) {
+#ifdef SIMSERIAL_DEBUG
+ printk("transmit_chars: head=%d, tail=%d, stopped=%d\n",
+ info->xmit.head, info->xmit.tail, info->tty->stopped);
+#endif
+ goto out;
+ }
+ /*
+ * We removed the loop and try to do it in to chunks. We need
+ * 2 operations maximum because it's a ring buffer.
+ *
+ * First from current to tail if possible.
+ * Then from the beginning of the buffer until necessary
+ */
+
+ count = MIN(CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE),
+ SERIAL_XMIT_SIZE - info->xmit.tail);
+ console->write(console, info->xmit.buf+info->xmit.tail, count);
+
+ info->xmit.tail = (info->xmit.tail+count) & (SERIAL_XMIT_SIZE-1);
+
+ /*
+ * We have more at the beginning of the buffer
+ */
+ count = CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
+ if (count) {
+ console->write(console, info->xmit.buf, count);
+ info->xmit.tail += count;
+ }
+out:
+ restore_flags(flags);
+}
+
+static void rs_flush_chars(struct tty_struct *tty)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+
+ if (info->xmit.head == info->xmit.tail || tty->stopped || tty->hw_stopped ||
+ !info->xmit.buf)
+ return;
+
+ transmit_chars(info, NULL);
+}
+
+
+static int rs_write(struct tty_struct * tty, int from_user,
+ const unsigned char *buf, int count)
+{
+ int c, ret = 0;
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+ unsigned long flags;
+
+ if (!tty || !info->xmit.buf || !tmp_buf) return 0;
+
+ save_flags(flags);
+ if (from_user) {
+ down(&tmp_buf_sem);
+ while (1) {
+ int c1;
+ c = CIRC_SPACE_TO_END(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
+ if (count < c)
+ c = count;
+ if (c <= 0)
+ break;
+
+ c -= copy_from_user(tmp_buf, buf, c);
+ if (!c) {
+ if (!ret)
+ ret = -EFAULT;
+ break;
+ }
+ cli();
+ c1 = CIRC_SPACE_TO_END(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
+ if (c1 < c)
+ c = c1;
+ memcpy(info->xmit.buf + info->xmit.head, tmp_buf, c);
+ info->xmit.head = ((info->xmit.head + c) &
+ (SERIAL_XMIT_SIZE-1));
+ restore_flags(flags);
+ buf += c;
+ count -= c;
+ ret += c;
+ }
+ up(&tmp_buf_sem);
+ } else {
+ cli();
+ while (1) {
+ c = CIRC_SPACE_TO_END(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
+ if (count < c)
+ c = count;
+ if (c <= 0) {
+ break;
+ }
+ memcpy(info->xmit.buf + info->xmit.head, buf, c);
+ info->xmit.head = ((info->xmit.head + c) &
+ (SERIAL_XMIT_SIZE-1));
+ buf += c;
+ count -= c;
+ ret += c;
+ }
+ restore_flags(flags);
+ }
+ /*
+ * Hey, we transmit directly from here in our case
+ */
+ if (CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE)
+ && !tty->stopped && !tty->hw_stopped) {
+ transmit_chars(info, NULL);
+ }
+ return ret;
+}
+
+static int rs_write_room(struct tty_struct *tty)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+
+ return CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
+}
+
+static int rs_chars_in_buffer(struct tty_struct *tty)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+
+ return CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
+}
+
+static void rs_flush_buffer(struct tty_struct *tty)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+ unsigned long flags;
+
+ save_flags(flags); cli();
+ info->xmit.head = info->xmit.tail = 0;
+ restore_flags(flags);
+
+ wake_up_interruptible(&tty->write_wait);
+
+ if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
+ tty->ldisc.write_wakeup)
+ (tty->ldisc.write_wakeup)(tty);
+}
+
+/*
+ * This function is used to send a high-priority XON/XOFF character to
+ * the device
+ */
+static void rs_send_xchar(struct tty_struct *tty, char ch)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+
+ info->x_char = ch;
+ if (ch) {
+ /*
+ * I guess we could call console->write() directly but
+ * let's do that for now.
+ */
+ transmit_chars(info, NULL);
+ }
+}
+
+/*
+ * ------------------------------------------------------------
+ * rs_throttle()
+ *
+ * This routine is called by the upper-layer tty layer to signal that
+ * incoming characters should be throttled.
+ * ------------------------------------------------------------
+ */
+static void rs_throttle(struct tty_struct * tty)
+{
+ if (I_IXOFF(tty)) rs_send_xchar(tty, STOP_CHAR(tty));
+
+ printk("simrs_throttle called\n");
+}
+
+static void rs_unthrottle(struct tty_struct * tty)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+
+ if (I_IXOFF(tty)) {
+ if (info->x_char)
+ info->x_char = 0;
+ else
+ rs_send_xchar(tty, START_CHAR(tty));
+ }
+ printk("simrs_unthrottle called\n");
+}
+
+/*
+ * rs_break() --- routine which turns the break handling on or off
+ */
+static void rs_break(struct tty_struct *tty, int break_state)
+{
+}
+
+static int rs_ioctl(struct tty_struct *tty, struct file * file,
+ unsigned int cmd, unsigned long arg)
+{
+ if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
+ (cmd != TIOCSERCONFIG) && (cmd != TIOCSERGSTRUCT) &&
+ (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) {
+ if (tty->flags & (1 << TTY_IO_ERROR))
+ return -EIO;
+ }
+
+ switch (cmd) {
+ case TIOCMGET:
+ printk("rs_ioctl: TIOCMGET called\n");
+ return -EINVAL;
+ case TIOCMBIS:
+ case TIOCMBIC:
+ case TIOCMSET:
+ printk("rs_ioctl: TIOCMBIS/BIC/SET called\n");
+ return -EINVAL;
+ case TIOCGSERIAL:
+ printk("simrs_ioctl TIOCGSERIAL called\n");
+ return 0;
+ case TIOCSSERIAL:
+ printk("simrs_ioctl TIOCSSERIAL called\n");
+ return 0;
+ case TIOCSERCONFIG:
+ printk("rs_ioctl: TIOCSERCONFIG called\n");
+ return -EINVAL;
+
+ case TIOCSERGETLSR: /* Get line status register */
+ printk("rs_ioctl: TIOCSERGETLSR called\n");
+ return -EINVAL;
+
+ case TIOCSERGSTRUCT:
+ printk("rs_ioctl: TIOCSERGSTRUCT called\n");
+#if 0
+ if (copy_to_user((struct async_struct *) arg,
+ info, sizeof(struct async_struct)))
+ return -EFAULT;
+#endif
+ return 0;
+
+ /*
+ * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
+ * - mask passed in arg for lines of interest
+ * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
+ * Caller should use TIOCGICOUNT to see which one it was
+ */
+ case TIOCMIWAIT:
+ printk("rs_ioctl: TIOCMIWAIT: called\n");
+ return 0;
+ /*
+ * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
+ * Return: write counters to the user passed counter struct
+ * NB: both 1->0 and 0->1 transitions are counted except for
+ * RI where only 0->1 is counted.
+ */
+ case TIOCGICOUNT:
+ printk("rs_ioctl: TIOCGICOUNT called\n");
+ return 0;
+
+ case TIOCSERGWILD:
+ case TIOCSERSWILD:
+ /* "setserial -W" is called in Debian boot */
+ printk ("TIOCSER?WILD ioctl obsolete, ignored.\n");
+ return 0;
+
+ default:
+ return -ENOIOCTLCMD;
+ }
+ return 0;
+}
+
+#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
+
+static void rs_set_termios(struct tty_struct *tty, struct termios *old_termios)
+{
+ unsigned int cflag = tty->termios->c_cflag;
+
+ if ( (cflag == old_termios->c_cflag)
+ && ( RELEVANT_IFLAG(tty->termios->c_iflag)
+ == RELEVANT_IFLAG(old_termios->c_iflag)))
+ return;
+
+
+ /* Handle turning off CRTSCTS */
+ if ((old_termios->c_cflag & CRTSCTS) &&
+ !(tty->termios->c_cflag & CRTSCTS)) {
+ tty->hw_stopped = 0;
+ rs_start(tty);
+ }
+}
+/*
+ * This routine will shutdown a serial port; interrupts are disabled, and
+ * DTR is dropped if the hangup on close termio flag is on.
+ */
+static void shutdown(struct async_struct * info)
+{
+ unsigned long flags;
+ struct serial_state *state;
+ int retval;
+
+ if (!(info->flags & ASYNC_INITIALIZED)) return;
+
+ state = info->state;
+
+#ifdef SIMSERIAL_DEBUG
+ printk("Shutting down serial port %d (irq %d)....", info->line,
+ state->irq);
+#endif
+
+ save_flags(flags); cli(); /* Disable interrupts */
+
+ /*
+ * First unlink the serial port from the IRQ chain...
+ */
+ if (info->next_port)
+ info->next_port->prev_port = info->prev_port;
+ if (info->prev_port)
+ info->prev_port->next_port = info->next_port;
+ else
+ IRQ_ports[state->irq] = info->next_port;
+
+ /*
+ * Free the IRQ, if necessary
+ */
+ if (state->irq && (!IRQ_ports[state->irq] ||
+ !IRQ_ports[state->irq]->next_port)) {
+ if (IRQ_ports[state->irq]) {
+ free_irq(state->irq, NULL);
+ retval = request_irq(state->irq, rs_interrupt_single,
+ IRQ_T(info), "serial", NULL);
+
+ if (retval)
+ printk("serial shutdown: request_irq: error %d"
+ " Couldn't reacquire IRQ.\n", retval);
+ } else
+ free_irq(state->irq, NULL);
+ }
+
+ if (info->xmit.buf) {
+ free_page((unsigned long) info->xmit.buf);
+ info->xmit.buf = 0;
+ }
+
+ if (info->tty) set_bit(TTY_IO_ERROR, &info->tty->flags);
+
+ info->flags &= ~ASYNC_INITIALIZED;
+ restore_flags(flags);
+}
+
+/*
+ * ------------------------------------------------------------
+ * rs_close()
+ *
+ * This routine is called when the serial port gets closed. First, we
+ * wait for the last remaining data to be sent. Then, we unlink its
+ * async structure from the interrupt chain if necessary, and we free
+ * that IRQ if nothing is left in the chain.
+ * ------------------------------------------------------------
+ */
+static void rs_close(struct tty_struct *tty, struct file * filp)
+{
+ struct async_struct * info = (struct async_struct *)tty->driver_data;
+ struct serial_state *state;
+ unsigned long flags;
+
+ if (!info ) return;
+
+ state = info->state;
+
+ save_flags(flags); cli();
+
+ if (tty_hung_up_p(filp)) {
+#ifdef SIMSERIAL_DEBUG
+ printk("rs_close: hung_up\n");
+#endif
+ MOD_DEC_USE_COUNT;
+ restore_flags(flags);
+ return;
+ }
+#ifdef SIMSERIAL_DEBUG
+ printk("rs_close ttys%d, count = %d\n", info->line, state->count);
+#endif
+ if ((tty->count == 1) && (state->count != 1)) {
+ /*
+ * Uh, oh. tty->count is 1, which means that the tty
+ * structure will be freed. state->count should always
+ * be one in these conditions. If it's greater than
+ * one, we've got real problems, since it means the
+ * serial port won't be shutdown.
+ */
+ printk("rs_close: bad serial port count; tty->count is 1, "
+ "state->count is %d\n", state->count);
+ state->count = 1;
+ }
+ if (--state->count < 0) {
+ printk("rs_close: bad serial port count for ttys%d: %d\n",
+ info->line, state->count);
+ state->count = 0;
+ }
+ if (state->count) {
+ MOD_DEC_USE_COUNT;
+ restore_flags(flags);
+ return;
+ }
+ info->flags |= ASYNC_CLOSING;
+ restore_flags(flags);
+
+ /*
+ * Now we wait for the transmit buffer to clear; and we notify
+ * the line discipline to only process XON/XOFF characters.
+ */
+ shutdown(info);
+ if (tty->driver.flush_buffer) tty->driver.flush_buffer(tty);
+ if (tty->ldisc.flush_buffer) tty->ldisc.flush_buffer(tty);
+ info->event = 0;
+ info->tty = 0;
+ if (info->blocked_open) {
+ if (info->close_delay) {
+ current->state = TASK_INTERRUPTIBLE;
+ schedule_timeout(info->close_delay);
+ }
+ wake_up_interruptible(&info->open_wait);
+ }
+ info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE|ASYNC_CLOSING);
+ wake_up_interruptible(&info->close_wait);
+ MOD_DEC_USE_COUNT;
+}
+
+/*
+ * rs_wait_until_sent() --- wait until the transmitter is empty
+ */
+static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
+{
+}
+
+
+/*
+ * rs_hangup() --- called by tty_hangup() when a hangup is signaled.
+ */
+static void rs_hangup(struct tty_struct *tty)
+{
+ struct async_struct * info = (struct async_struct *)tty->driver_data;
+ struct serial_state *state = info->state;
+
+#ifdef SIMSERIAL_DEBUG
+ printk("rs_hangup: called\n");
+#endif
+
+ state = info->state;
+
+ rs_flush_buffer(tty);
+ if (info->flags & ASYNC_CLOSING)
+ return;
+ shutdown(info);
+
+ info->event = 0;
+ state->count = 0;
+ info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE);
+ info->tty = 0;
+ wake_up_interruptible(&info->open_wait);
+}
+
+
+static int get_async_struct(int line, struct async_struct **ret_info)
+{
+ struct async_struct *info;
+ struct serial_state *sstate;
+
+ sstate = rs_table + line;
+ sstate->count++;
+ if (sstate->info) {
+ *ret_info = sstate->info;
+ return 0;
+ }
+ info = kmalloc(sizeof(struct async_struct), GFP_KERNEL);
+ if (!info) {
+ sstate->count--;
+ return -ENOMEM;
+ }
+ memset(info, 0, sizeof(struct async_struct));
+ init_waitqueue_head(&info->open_wait);
+ init_waitqueue_head(&info->close_wait);
+ init_waitqueue_head(&info->delta_msr_wait);
+ info->magic = SERIAL_MAGIC;
+ info->port = sstate->port;
+ info->flags = sstate->flags;
+ info->xmit_fifo_size = sstate->xmit_fifo_size;
+ info->line = line;
+ info->tqueue.routine = do_softint;
+ info->tqueue.data = info;
+ info->state = sstate;
+ if (sstate->info) {
+ kfree(info);
+ *ret_info = sstate->info;
+ return 0;
+ }
+ *ret_info = sstate->info = info;
+ return 0;
+}
+
+static int
+startup(struct async_struct *info)
+{
+ unsigned long flags;
+ int retval=0;
+ void (*handler)(int, void *, struct pt_regs *);
+ struct serial_state *state= info->state;
+ unsigned long page;
+
+ page = get_free_page(GFP_KERNEL);
+ if (!page)
+ return -ENOMEM;
+
+ save_flags(flags); cli();
+
+ if (info->flags & ASYNC_INITIALIZED) {
+ free_page(page);
+ goto errout;
+ }
+
+ if (!state->port || !state->type) {
+ if (info->tty) set_bit(TTY_IO_ERROR, &info->tty->flags);
+ free_page(page);
+ goto errout;
+ }
+ if (info->xmit.buf)
+ free_page(page);
+ else
+ info->xmit.buf = (unsigned char *) page;
+
+#ifdef SIMSERIAL_DEBUG
+ printk("startup: ttys%d (irq %d)...", info->line, state->irq);
+#endif
+
+ /*
+ * Allocate the IRQ if necessary
+ */
+ if (state->irq && (!IRQ_ports[state->irq] ||
+ !IRQ_ports[state->irq]->next_port)) {
+ if (IRQ_ports[state->irq]) {
+ retval = -EBUSY;
+ goto errout;
+ } else
+ handler = rs_interrupt_single;
+
+ retval = request_irq(state->irq, handler, IRQ_T(info),
+ "simserial", NULL);
+ if (retval) {
+ if (capable(CAP_SYS_ADMIN)) {
+ if (info->tty)
+ set_bit(TTY_IO_ERROR,
+ &info->tty->flags);
+ retval = 0;
+ }
+ goto errout;
+ }
+ }
+
+ /*
+ * Insert serial port into IRQ chain.
+ */
+ info->prev_port = 0;
+ info->next_port = IRQ_ports[state->irq];
+ if (info->next_port)
+ info->next_port->prev_port = info;
+ IRQ_ports[state->irq] = info;
+
+ if (info->tty) clear_bit(TTY_IO_ERROR, &info->tty->flags);
+
+ info->xmit.head = info->xmit.tail = 0;
+
+#if 0
+ /*
+ * Set up serial timers...
+ */
+ timer_table[RS_TIMER].expires = jiffies + 2*HZ/100;
+ timer_active |= 1 << RS_TIMER;
+#endif
+
+ /*
+ * Set up the tty->alt_speed kludge
+ */
+ if (info->tty) {
+ if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
+ info->tty->alt_speed = 57600;
+ if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
+ info->tty->alt_speed = 115200;
+ if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
+ info->tty->alt_speed = 230400;
+ if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
+ info->tty->alt_speed = 460800;
+ }
+
+ info->flags |= ASYNC_INITIALIZED;
+ restore_flags(flags);
+ return 0;
+
+errout:
+ restore_flags(flags);
+ return retval;
+}
+
+
+/*
+ * This routine is called whenever a serial port is opened. It
+ * enables interrupts for a serial port, linking in its async structure into
+ * the IRQ chain. It also performs the serial-specific
+ * initialization for the tty structure.
+ */
+static int rs_open(struct tty_struct *tty, struct file * filp)
+{
+ struct async_struct *info;
+ int retval, line;
+ unsigned long page;
+
+ MOD_INC_USE_COUNT;
+ line = minor(tty->device) - tty->driver.minor_start;
+ if ((line < 0) || (line >= NR_PORTS)) {
+ MOD_DEC_USE_COUNT;
+ return -ENODEV;
+ }
+ retval = get_async_struct(line, &info);
+ if (retval) {
+ MOD_DEC_USE_COUNT;
+ return retval;
+ }
+ tty->driver_data = info;
+ info->tty = tty;
+
+#ifdef SIMSERIAL_DEBUG
+ printk("rs_open %s%d, count = %d\n", tty->driver.name, info->line,
+ info->state->count);
+#endif
+ info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+
+ if (!tmp_buf) {
+ page = get_free_page(GFP_KERNEL);
+ if (!page) {
+ /* MOD_DEC_USE_COUNT; "info->tty" will cause this? */
+ return -ENOMEM;
+ }
+ if (tmp_buf)
+ free_page(page);
+ else
+ tmp_buf = (unsigned char *) page;
+ }
+
+ /*
+ * If the port is the middle of closing, bail out now
+ */
+ if (tty_hung_up_p(filp) ||
+ (info->flags & ASYNC_CLOSING)) {
+ if (info->flags & ASYNC_CLOSING)
+ interruptible_sleep_on(&info->close_wait);
+ /* MOD_DEC_USE_COUNT; "info->tty" will cause this? */
+#ifdef SERIAL_DO_RESTART
+ return ((info->flags & ASYNC_HUP_NOTIFY) ?
+ -EAGAIN : -ERESTARTSYS);
+#else
+ return -EAGAIN;
+#endif
+ }
+
+ /*
+ * Start up serial port
+ */
+ retval = startup(info);
+ if (retval) {
+ /* MOD_DEC_USE_COUNT; "info->tty" will cause this? */
+ return retval;
+ }
+
+ if ((info->state->count == 1) &&
+ (info->flags & ASYNC_SPLIT_TERMIOS)) {
+ if (tty->driver.subtype == SERIAL_TYPE_NORMAL)
+ *tty->termios = info->state->normal_termios;
+ else
+ *tty->termios = info->state->callout_termios;
+ }
+
+ /*
+ * figure out which console to use (should be one already)
+ */
+ console = console_drivers;
+ while (console) {
+ if ((console->flags & CON_ENABLED) && console->write) break;
+ console = console->next;
+ }
+
+ info->session = current->session;
+ info->pgrp = current->pgrp;
+
+#ifdef SIMSERIAL_DEBUG
+ printk("rs_open ttys%d successful\n", info->line);
+#endif
+ return 0;
+}
+
+/*
+ * /proc fs routines....
+ */
+
+static inline int line_info(char *buf, struct serial_state *state)
+{
+ return sprintf(buf, "%d: uart:%s port:%lX irq:%d\n",
+ state->line, uart_config[state->type].name,
+ state->port, state->irq);
+}
+
+static int rs_read_proc(char *page, char **start, off_t off, int count,
+ int *eof, void *data)
+{
+ int i, len = 0, l;
+ off_t begin = 0;
+
+ len += sprintf(page, "simserinfo:1.0 driver:%s\n", serial_version);
+ for (i = 0; i < NR_PORTS && len < 4000; i++) {
+ l = line_info(page + len, &rs_table[i]);
+ len += l;
+ if (len+begin > off+count)
+ goto done;
+ if (len+begin < off) {
+ begin += len;
+ len = 0;
+ }
+ }
+ *eof = 1;
+done:
+ if (off >= len+begin)
+ return 0;
+ *start = page + (begin-off);
+ return ((count < begin+len-off) ? count : begin+len-off);
+}
+
+/*
+ * ---------------------------------------------------------------------
+ * rs_init() and friends
+ *
+ * rs_init() is called at boot-time to initialize the serial driver.
+ * ---------------------------------------------------------------------
+ */
+
+/*
+ * This routine prints out the appropriate serial driver version
+ * number, and identifies which options were configured into this
+ * driver.
+ */
+static inline void show_serial_version(void)
+{
+ printk(KERN_INFO "%s version %s with", serial_name, serial_version);
+ printk(" no serial options enabled\n");
+}
+
+/*
+ * The serial driver boot-time initialization code!
+ */
+static int __init
+simrs_init (void)
+{
+ int i;
+ struct serial_state *state;
+
+ show_serial_version();
+
+ /* Initialize the tty_driver structure */
+
+ memset(&serial_driver, 0, sizeof(struct tty_driver));
+ serial_driver.magic = TTY_DRIVER_MAGIC;
+ serial_driver.driver_name = "simserial";
+ serial_driver.name = "ttyS";
+ serial_driver.major = TTY_MAJOR;
+ serial_driver.minor_start = 64;
+ serial_driver.num = 1;
+ serial_driver.type = TTY_DRIVER_TYPE_SERIAL;
+ serial_driver.subtype = SERIAL_TYPE_NORMAL;
+ serial_driver.init_termios = tty_std_termios;
+ serial_driver.init_termios.c_cflag =
+ B9600 | CS8 | CREAD | HUPCL | CLOCAL;
+ serial_driver.flags = TTY_DRIVER_REAL_RAW;
+ serial_driver.refcount = &serial_refcount;
+ serial_driver.table = serial_table;
+ serial_driver.termios = serial_termios;
+ serial_driver.termios_locked = serial_termios_locked;
+
+ serial_driver.open = rs_open;
+ serial_driver.close = rs_close;
+ serial_driver.write = rs_write;
+ serial_driver.put_char = rs_put_char;
+ serial_driver.flush_chars = rs_flush_chars;
+ serial_driver.write_room = rs_write_room;
+ serial_driver.chars_in_buffer = rs_chars_in_buffer;
+ serial_driver.flush_buffer = rs_flush_buffer;
+ serial_driver.ioctl = rs_ioctl;
+ serial_driver.throttle = rs_throttle;
+ serial_driver.unthrottle = rs_unthrottle;
+ serial_driver.send_xchar = rs_send_xchar;
+ serial_driver.set_termios = rs_set_termios;
+ serial_driver.stop = rs_stop;
+ serial_driver.start = rs_start;
+ serial_driver.hangup = rs_hangup;
+ serial_driver.break_ctl = rs_break;
+ serial_driver.wait_until_sent = rs_wait_until_sent;
+ serial_driver.read_proc = rs_read_proc;
+
+ /*
+ * Let's have a little bit of fun !
+ */
+ for (i = 0, state = rs_table; i < NR_PORTS; i++,state++) {
+
+ if (state->type == PORT_UNKNOWN) continue;
+
+ if (!state->irq) {
+ state->irq = ia64_alloc_irq();
+ ia64_ssc_connect_irq(KEYBOARD_INTR, state->irq);
+ }
+
+ printk(KERN_INFO "ttyS%02d at 0x%04lx (irq = %d) is a %s\n",
+ state->line,
+ state->port, state->irq,
+ uart_config[state->type].name);
+ }
+ /*
+ * The callout device is just like normal device except for
+ * major number and the subtype code.
+ */
+ callout_driver = serial_driver;
+ callout_driver.name = "cua";
+ callout_driver.major = TTYAUX_MAJOR;
+ callout_driver.subtype = SERIAL_TYPE_CALLOUT;
+ callout_driver.read_proc = 0;
+ callout_driver.proc_entry = 0;
+
+ if (tty_register_driver(&serial_driver))
+ panic("Couldn't register simserial driver\n");
+
+ if (tty_register_driver(&callout_driver))
+ panic("Couldn't register callout driver\n");
+
+ return 0;
+}
+
+#ifndef MODULE
+__initcall(simrs_init);
+#endif
diff -urN linux-2.5.8-pre3/arch/ia64/hp/simeth.c lia64-2.5.8-pre3/arch/ia64/hp/simeth.c
--- linux-2.5.8-pre3/arch/ia64/hp/simeth.c Thu Apr 11 15:26:07 2002
+++ lia64-2.5.8-pre3/arch/ia64/hp/simeth.c Wed Dec 31 16:00:00 1969
@@ -1,533 +0,0 @@
-/*
- * Simulated Ethernet Driver
- *
- * Copyright (C) 1999-2001 Hewlett-Packard Co
- * Stephane Eranian
- */
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-
-#define SIMETH_RECV_MAX 10
-
-/*
- * Maximum possible received frame for Ethernet.
- * We preallocate an sk_buff of that size to avoid costly
- * memcpy for temporary buffer into sk_buff. We do basically
- * what's done in other drivers, like eepro with a ring.
- * The difference is, of course, that we don't have real DMA !!!
- */
-#define SIMETH_FRAME_SIZE ETH_FRAME_LEN
-
-
-#define SSC_NETDEV_PROBE 100
-#define SSC_NETDEV_SEND 101
-#define SSC_NETDEV_RECV 102
-#define SSC_NETDEV_ATTACH 103
-#define SSC_NETDEV_DETACH 104
-
-#define NETWORK_INTR 8
-
-struct simeth_local {
- struct net_device_stats stats;
- int simfd; /* descriptor in the simulator */
-};
-
-static int simeth_probe1(void);
-static int simeth_open(struct net_device *dev);
-static int simeth_close(struct net_device *dev);
-static int simeth_tx(struct sk_buff *skb, struct net_device *dev);
-static int simeth_rx(struct net_device *dev);
-static struct net_device_stats *simeth_get_stats(struct net_device *dev);
-static void simeth_interrupt(int irq, void *dev_id, struct pt_regs * regs);
-static void set_multicast_list(struct net_device *dev);
-static int simeth_device_event(struct notifier_block *this,unsigned long event, void *ptr);
-
-static char *simeth_version="0.3";
-
-/*
- * This variable is used to establish a mapping between the Linux/ia64 kernel
- * and the host linux kernel.
- *
- * As of today, we support only one card, even though most of the code
- * is ready for many more. The mapping is then:
- * linux/ia64 -> linux/x86
- * eth0 -> eth1
- *
- * In the future, we some string operations, we could easily support up
- * to 10 cards (0-9).
- *
- * The default mapping can be changed on the kernel command line by
- * specifying simeth=ethX (or whatever string you want).
- */
-static char *simeth_device="eth0"; /* default host interface to use */
-
-
-
-static volatile unsigned int card_count; /* how many cards "found" so far */
-static int simeth_debug; /* set to 1 to get debug information */
-
-/*
- * Used to catch IFF_UP & IFF_DOWN events
- */
-static struct notifier_block simeth_dev_notifier = {
- simeth_device_event,
- 0
-};
-
-
-/*
- * Function used when using a kernel command line option.
- *
- * Format: simeth=interface_name (like eth0)
- */
-static int __init
-simeth_setup(char *str)
-{
- simeth_device = str;
- return 1;
-}
-
-__setup("simeth=", simeth_setup);
-
-/*
- * Function used to probe for simeth devices when not installed
- * as a loadable module
- */
-
-int __init
-simeth_probe (void)
-{
- int r;
-
- printk("simeth: v%s\n", simeth_version);
-
- r = simeth_probe1();
-
- if (r == 0) register_netdevice_notifier(&simeth_dev_notifier);
-
- return r;
-}
-
-extern long ia64_ssc (long, long, long, long, int);
-extern void ia64_ssc_connect_irq (long intr, long irq);
-
-static inline int
-netdev_probe(char *name, unsigned char *ether)
-{
- return ia64_ssc(__pa(name), __pa(ether), 0,0, SSC_NETDEV_PROBE);
-}
-
-
-static inline int
-netdev_connect(int irq)
-{
- /* XXX Fix me
- * this does not support multiple cards
- * also no return value
- */
- ia64_ssc_connect_irq(NETWORK_INTR, irq);
- return 0;
-}
-
-static inline int
-netdev_attach(int fd, int irq, unsigned int ipaddr)
-{
- /* this puts the host interface in the right mode (start interupting) */
- return ia64_ssc(fd, ipaddr, 0,0, SSC_NETDEV_ATTACH);
-}
-
-
-static inline int
-netdev_detach(int fd)
-{
- /*
- * inactivate the host interface (don't interrupt anymore) */
- return ia64_ssc(fd, 0,0,0, SSC_NETDEV_DETACH);
-}
-
-static inline int
-netdev_send(int fd, unsigned char *buf, unsigned int len)
-{
- return ia64_ssc(fd, __pa(buf), len, 0, SSC_NETDEV_SEND);
-}
-
-static inline int
-netdev_read(int fd, unsigned char *buf, unsigned int len)
-{
- return ia64_ssc(fd, __pa(buf), len, 0, SSC_NETDEV_RECV);
-}
-
-/*
- * Function shared with module code, so cannot be in init section
- *
- * So far this function "detects" only one card (test_&_set) but could
- * be extended easily.
- *
- * Return:
- * - -ENODEV is no device found
- * - -ENOMEM is no more memory
- * - 0 otherwise
- */
-static int
-simeth_probe1(void)
-{
- unsigned char mac_addr[ETH_ALEN];
- struct simeth_local *local;
- struct net_device *dev;
- int fd, i;
-
- /*
- * XXX Fix me
- * let's support just one card for now
- */
- if (test_and_set_bit(0, &card_count))
- return -ENODEV;
-
- /*
- * check with the simulator for the device
- */
- fd = netdev_probe(simeth_device, mac_addr);
- if (fd == -1)
- return -ENODEV;
-
- dev = init_etherdev(NULL, sizeof(struct simeth_local));
- if (!dev)
- return -ENOMEM;
-
- memcpy(dev->dev_addr, mac_addr, sizeof(mac_addr));
-
- dev->irq = ia64_alloc_irq();
-
- /*
- * attach the interrupt in the simulator, this does enable interrupts
- * until a netdev_attach() is called
- */
- netdev_connect(dev->irq);
-
- memset(dev->priv, 0, sizeof(struct simeth_local));
-
- local = dev->priv;
- local->simfd = fd; /* keep track of underlying file descriptor */
-
- dev->open = simeth_open;
- dev->stop = simeth_close;
- dev->hard_start_xmit = simeth_tx;
- dev->get_stats = simeth_get_stats;
- dev->set_multicast_list = set_multicast_list; /* no yet used */
-
- /* Fill in the fields of the device structure with ethernet-generic values. */
- ether_setup(dev);
-
- printk("%s: hosteth=%s simfd=%d, HwAddr", dev->name, simeth_device, local->simfd);
- for(i = 0; i < ETH_ALEN; i++) {
- printk(" %2.2x", dev->dev_addr[i]);
- }
- printk(", IRQ %d\n", dev->irq);
-
- return 0;
-}
-
-/*
- * actually binds the device to an interrupt vector
- */
-static int
-simeth_open(struct net_device *dev)
-{
- if (request_irq(dev->irq, simeth_interrupt, 0, "simeth", dev)) {
- printk ("simeth: unable to get IRQ %d.\n", dev->irq);
- return -EAGAIN;
- }
-
- netif_start_queue(dev);
-
- return 0;
-}
-
-/* copied from lapbether.c */
-static __inline__ int dev_is_ethdev(struct net_device *dev)
-{
- return ( dev->type == ARPHRD_ETHER && strncmp(dev->name, "dummy", 5));
-}
-
-
-/*
- * Handler for IFF_UP or IFF_DOWN
- *
- * The reason for that is that we don't want to be interrupted when the
- * interface is down. There is no way to unconnect in the simualtor. Instead
- * we use this function to shutdown packet processing in the frame filter
- * in the simulator. Thus no interrupts are generated
- *
- *
- * That's also the place where we pass the IP address of this device to the
- * simulator so that that we can start filtering packets for it
- *
- * There may be a better way of doing this, but I don't know which yet.
- */
-static int
-simeth_device_event(struct notifier_block *this,unsigned long event, void *ptr)
-{
- struct net_device *dev = (struct net_device *)ptr;
- struct simeth_local *local;
- struct in_device *in_dev;
- struct in_ifaddr **ifap = NULL;
- struct in_ifaddr *ifa = NULL;
- int r;
-
-
- if ( ! dev ) {
- printk(KERN_WARNING "simeth_device_event dev=0\n");
- return NOTIFY_DONE;
- }
-
- if ( event != NETDEV_UP && event != NETDEV_DOWN ) return NOTIFY_DONE;
-
- /*
- * Check whether or not it's for an ethernet device
- *
- * XXX Fixme: This works only as long as we support one
- * type of ethernet device.
- */
- if ( !dev_is_ethdev(dev) ) return NOTIFY_DONE;
-
- if ((in_dev=dev->ip_ptr) != NULL) {
- for (ifap=&in_dev->ifa_list; (ifa=*ifap) != NULL; ifap=&ifa->ifa_next)
- if (strcmp(dev->name, ifa->ifa_label) == 0) break;
- }
- if ( ifa == NULL ) {
- printk("simeth_open: can't find device %s's ifa\n", dev->name);
- return NOTIFY_DONE;
- }
-
- printk("simeth_device_event: %s ipaddr=0x%x\n", dev->name, htonl(ifa->ifa_local));
-
- /*
- * XXX Fix me
- * if the device was up, and we're simply reconfiguring it, not sure
- * we get DOWN then UP.
- */
-
- local = dev->priv;
- /* now do it for real */
- r = event == NETDEV_UP ?
- netdev_attach(local->simfd, dev->irq, htonl(ifa->ifa_local)):
- netdev_detach(local->simfd);
-
- printk("simeth: netdev_attach/detach: event=%s ->%d\n", event == NETDEV_UP ? "attach":"detach", r);
-
- return NOTIFY_DONE;
-}
-
-static int
-simeth_close(struct net_device *dev)
-{
- netif_stop_queue(dev);
-
- free_irq(dev->irq, dev);
-
- return 0;
-}
-
-/*
- * Only used for debug
- */
-static void
-frame_print(unsigned char *from, unsigned char *frame, int len)
-{
- int i;
-
- printk("%s: (%d) %02x", from, len, frame[0] & 0xff);
- for(i=1; i < 6; i++ ) {
- printk(":%02x", frame[i] &0xff);
- }
- printk(" %2x", frame[6] &0xff);
- for(i=7; i < 12; i++ ) {
- printk(":%02x", frame[i] &0xff);
- }
- printk(" [%02x%02x]\n", frame[12], frame[13]);
-
- for(i=14; i < len; i++ ) {
- printk("%02x ", frame[i] &0xff);
- if ( (i%10)==0) printk("\n");
- }
- printk("\n");
-}
-
-
-/*
- * Function used to transmit of frame, very last one on the path before
- * going to the simulator.
- */
-static int
-simeth_tx(struct sk_buff *skb, struct net_device *dev)
-{
- struct simeth_local *local = (struct simeth_local *)dev->priv;
-
-#if 0
- /* ensure we have at least ETH_ZLEN bytes (min frame size) */
- unsigned int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
- /* Where do the extra padding bytes comes from inthe skbuff ? */
-#else
- /* the real driver in the host system is going to take care of that
- * or maybe it's the NIC itself.
- */
- unsigned int length = skb->len;
-#endif
-
- local->stats.tx_bytes += skb->len;
- local->stats.tx_packets++;
-
-
- if (simeth_debug > 5) frame_print("simeth_tx", skb->data, length);
-
- netdev_send(local->simfd, skb->data, length);
-
- /*
- * we are synchronous on write, so we don't simulate a
- * trasnmit complete interrupt, thus we don't need to arm a tx
- */
-
- dev_kfree_skb(skb);
- return 0;
-}
-
-static inline struct sk_buff *
-make_new_skb(struct net_device *dev)
-{
- struct sk_buff *nskb;
-
- /*
- * The +2 is used to make sure that the IP header is nicely
- * aligned (on 4byte boundary I assume 14+2=16)
- */
- nskb = dev_alloc_skb(SIMETH_FRAME_SIZE + 2);
- if ( nskb == NULL ) {
- printk(KERN_NOTICE "%s: memory squeeze. dropping packet.\n", dev->name);
- return NULL;
- }
- nskb->dev = dev;
-
- skb_reserve(nskb, 2); /* Align IP on 16 byte boundaries */
-
- skb_put(nskb,SIMETH_FRAME_SIZE);
-
- return nskb;
-}
-
-/*
- * called from interrupt handler to process a received frame
- */
-static int
-simeth_rx(struct net_device *dev)
-{
- struct simeth_local *local;
- struct sk_buff *skb;
- int len;
- int rcv_count = SIMETH_RECV_MAX;
-
- local = (struct simeth_local *)dev->priv;
- /*
- * the loop concept has been borrowed from other drivers
- * looks to me like it's a throttling thing to avoid pushing to many
- * packets at one time into the stack. Making sure we can process them
- * upstream and make forward progress overall
- */
- do {
- if ( (skb=make_new_skb(dev)) == NULL ) {
- printk(KERN_NOTICE "%s: memory squeeze. dropping packet.\n", dev->name);
- local->stats.rx_dropped++;
- return 0;
- }
- /*
- * Read only one frame at a time
- */
- len = netdev_read(local->simfd, skb->data, SIMETH_FRAME_SIZE);
- if ( len == 0 ) {
- if ( simeth_debug > 0 ) printk(KERN_WARNING "%s: count=%d netdev_read=0\n", dev->name, SIMETH_RECV_MAX-rcv_count);
- break;
- }
-#if 0
- /*
- * XXX Fix me
- * Should really do a csum+copy here
- */
- memcpy(skb->data, frame, len);
-#endif
- skb->protocol = eth_type_trans(skb, dev);
-
- if ( simeth_debug > 6 ) frame_print("simeth_rx", skb->data, len);
-
- /*
- * push the packet up & trigger software interrupt
- */
- netif_rx(skb);
-
- local->stats.rx_packets++;
- local->stats.rx_bytes += len;
-
- } while ( --rcv_count );
-
- return len; /* 0 = nothing left to read, otherwise, we can try again */
-}
-
-/*
- * Interrupt handler (Yes, we can do it too !!!)
- */
-static void
-simeth_interrupt(int irq, void *dev_id, struct pt_regs * regs)
-{
- struct net_device *dev = dev_id;
-
- if ( dev == NULL ) {
- printk(KERN_WARNING "simeth: irq %d for unknown device\n", irq);
- return;
- }
-
- /*
- * very simple loop because we get interrupts only when receving
- */
- while (simeth_rx(dev));
-}
-
-static struct net_device_stats *
-simeth_get_stats(struct net_device *dev)
-{
- struct simeth_local *local = (struct simeth_local *) dev->priv;
-
- return &local->stats;
-}
-
-/* fake multicast ability */
-static void
-set_multicast_list(struct net_device *dev)
-{
- printk(KERN_WARNING "%s: set_multicast_list called\n", dev->name);
-}
-
-#ifdef CONFIG_NET_FASTROUTE
-static int
-simeth_accept_fastpath(struct net_device *dev, struct dst_entry *dst)
-{
- printk(KERN_WARNING "%s: simeth_accept_fastpath called\n", dev->name);
- return -1;
-}
-#endif
-
-__initcall(simeth_probe);
diff -urN linux-2.5.8-pre3/arch/ia64/hp/simscsi.c lia64-2.5.8-pre3/arch/ia64/hp/simscsi.c
--- linux-2.5.8-pre3/arch/ia64/hp/simscsi.c Thu Apr 11 15:27:10 2002
+++ lia64-2.5.8-pre3/arch/ia64/hp/simscsi.c Wed Dec 31 16:00:00 1969
@@ -1,368 +0,0 @@
-/*
- * Simulated SCSI driver.
- *
- * Copyright (C) 1999, 2001-2002 Hewlett-Packard Co
- * David Mosberger-Tang
- * Stephane Eranian
- *
- * 02/01/15 David Mosberger Updated for v2.5.1
- * 99/12/18 David Mosberger Added support for READ10/WRITE10 needed by linux v2.3.33
- */
-#include
-#include
-#include
-#include
-#include
-#include
-
-#include
-
-#include
-
-#include "../drivers/scsi/scsi.h"
-#include "../drivers/scsi/sd.h"
-#include "../drivers/scsi/hosts.h"
-#include "simscsi.h"
-
-#define DEBUG_SIMSCSI 1
-
-/* Simulator system calls: */
-
-#define SSC_OPEN 50
-#define SSC_CLOSE 51
-#define SSC_READ 52
-#define SSC_WRITE 53
-#define SSC_GET_COMPLETION 54
-#define SSC_WAIT_COMPLETION 55
-
-#define SSC_WRITE_ACCESS 2
-#define SSC_READ_ACCESS 1
-
-#if DEBUG_SIMSCSI
- int simscsi_debug;
-# define DBG simscsi_debug
-#else
-# define DBG 0
-#endif
-
-static struct Scsi_Host *host;
-
-static void simscsi_interrupt (unsigned long val);
-DECLARE_TASKLET(simscsi_tasklet, simscsi_interrupt, 0);
-
-struct disk_req {
- unsigned long addr;
- unsigned len;
-};
-
-struct disk_stat {
- int fd;
- unsigned count;
-};
-
-extern long ia64_ssc (long arg0, long arg1, long arg2, long arg3, int nr);
-
-static int desc[8] = { -1, -1, -1, -1, -1, -1, -1, -1 };
-
-static struct queue_entry {
- Scsi_Cmnd *sc;
-} queue[SIMSCSI_REQ_QUEUE_LEN];
-
-static int rd, wr;
-static atomic_t num_reqs = ATOMIC_INIT(0);
-
-/* base name for default disks */
-static char *simscsi_root = DEFAULT_SIMSCSI_ROOT;
-
-#define MAX_ROOT_LEN 128
-
-/*
- * used to setup a new base for disk images
- * to use /foo/bar/disk[a-z] as disk images
- * you have to specify simscsi=/foo/bar/disk on the command line
- */
-static int __init
-simscsi_setup (char *s)
-{
- /* XXX Fix me we may need to strcpy() ? */
- if (strlen(s) > MAX_ROOT_LEN) {
- printk("simscsi_setup: prefix too long---using default %s\n", simscsi_root);
- }
- simscsi_root = s;
- return 1;
-}
-
-__setup("simscsi=", simscsi_setup);
-
-static void
-simscsi_interrupt (unsigned long val)
-{
- Scsi_Cmnd *sc;
-
- while ((sc = queue[rd].sc) != 0) {
- atomic_dec(&num_reqs);
- queue[rd].sc = 0;
- if (DBG)
- printk("simscsi_interrupt: done with %ld\n", sc->serial_number);
- (*sc->scsi_done)(sc);
- rd = (rd + 1) % SIMSCSI_REQ_QUEUE_LEN;
- }
-}
-
-int
-simscsi_detect (Scsi_Host_Template *templ)
-{
- templ->proc_name = "simscsi";
- host = scsi_register(templ, 0);
- return 1; /* fake one SCSI host adapter */
-}
-
-int
-simscsi_release (struct Scsi_Host *host)
-{
- return 0; /* this is easy... */
-}
-
-const char *
-simscsi_info (struct Scsi_Host *host)
-{
- return "simulated SCSI host adapter";
-}
-
-int
-simscsi_abort (Scsi_Cmnd *cmd)
-{
- printk ("simscsi_abort: unimplemented\n");
- return SCSI_ABORT_SUCCESS;
-}
-
-int
-simscsi_reset (Scsi_Cmnd *cmd, unsigned int reset_flags)
-{
- printk ("simscsi_reset: unimplemented\n");
- return SCSI_RESET_SUCCESS;
-}
-
-int
-simscsi_biosparam (Disk *disk, kdev_t n, int ip[])
-{
- int size = disk->capacity;
-
- ip[0] = 64;
- ip[1] = 32;
- ip[2] = size >> 11;
- return 0;
-}
-
-static void
-simscsi_readwrite (Scsi_Cmnd *sc, int mode, unsigned long offset, unsigned long len)
-{
- struct disk_stat stat;
- struct disk_req req;
-
- req.addr = __pa(sc->request_buffer);
- req.len = len; /* # of bytes to transfer */
-
- if (sc->request_bufflen < req.len)
- return;
-
- stat.fd = desc[sc->target];
- if (DBG)
- printk("simscsi_%s @ %lx (off %lx)\n",
- mode == SSC_READ ? "read":"write", req.addr, offset);
- ia64_ssc(stat.fd, 1, __pa(&req), offset, mode);
- ia64_ssc(__pa(&stat), 0, 0, 0, SSC_WAIT_COMPLETION);
-
- if (stat.count == req.len) {
- sc->result = GOOD;
- } else {
- sc->result = DID_ERROR << 16;
- }
-}
-
-static void
-simscsi_sg_readwrite (Scsi_Cmnd *sc, int mode, unsigned long offset)
-{
- int list_len = sc->use_sg;
- struct scatterlist *sl = (struct scatterlist *)sc->buffer;
- struct disk_stat stat;
- struct disk_req req;
-
- stat.fd = desc[sc->target];
-
- while (list_len) {
- req.addr = __pa(page_address(sl->page) + sl->offset);
- req.len = sl->length;
- if (DBG)
- printk("simscsi_sg_%s @ %lx (off %lx) use_sg=%d len=%d\n",
- mode == SSC_READ ? "read":"write", req.addr, offset,
- list_len, sl->length);
- ia64_ssc(stat.fd, 1, __pa(&req), offset, mode);
- ia64_ssc(__pa(&stat), 0, 0, 0, SSC_WAIT_COMPLETION);
-
- /* should not happen in our case */
- if (stat.count != req.len) {
- sc->result = DID_ERROR << 16;
- return;
- }
- offset += sl->length;
- sl++;
- list_len--;
- }
- sc->result = GOOD;
-}
-
-/*
- * function handling both READ_6/WRITE_6 (non-scatter/gather mode)
- * commands.
- * Added 02/26/99 S.Eranian
- */
-static void
-simscsi_readwrite6 (Scsi_Cmnd *sc, int mode)
-{
- unsigned long offset;
-
- offset = (((sc->cmnd[1] & 0x1f) << 16) | (sc->cmnd[2] << 8) | sc->cmnd[3])*512;
- if (sc->use_sg > 0)
- simscsi_sg_readwrite(sc, mode, offset);
- else
- simscsi_readwrite(sc, mode, offset, sc->cmnd[4]*512);
-}
-
-
-static void
-simscsi_readwrite10 (Scsi_Cmnd *sc, int mode)
-{
- unsigned long offset;
-
- offset = ( (sc->cmnd[2] << 24) | (sc->cmnd[3] << 16)
- | (sc->cmnd[4] << 8) | (sc->cmnd[5] << 0))*512;
- if (sc->use_sg > 0)
- simscsi_sg_readwrite(sc, mode, offset);
- else
- simscsi_readwrite(sc, mode, offset, ((sc->cmnd[7] << 8) | sc->cmnd[8])*512);
-}
-
-int
-simscsi_queuecommand (Scsi_Cmnd *sc, void (*done)(Scsi_Cmnd *))
-{
- char fname[MAX_ROOT_LEN+16];
- char *buf;
-#if DEBUG_SIMSCSI
- register long sp asm ("sp");
-
- if (DBG)
- printk("simscsi_queuecommand: target=%d,cmnd=%u,sc=%lu,sp=%lx,done=%p\n",
- sc->target, sc->cmnd[0], sc->serial_number, sp, done);
-#endif
-
- sc->result = DID_BAD_TARGET << 16;
- sc->scsi_done = done;
- if (sc->target <= 7 && sc->lun == 0) {
- switch (sc->cmnd[0]) {
- case INQUIRY:
- if (sc->request_bufflen < 35) {
- break;
- }
- sprintf (fname, "%s%c", simscsi_root, 'a' + sc->target);
- desc[sc->target] = ia64_ssc (__pa(fname), SSC_READ_ACCESS|SSC_WRITE_ACCESS,
- 0, 0, SSC_OPEN);
- if (desc[sc->target] < 0) {
- /* disk doesn't exist... */
- break;
- }
- buf = sc->request_buffer;
- buf[0] = 0; /* magnetic disk */
- buf[1] = 0; /* not a removable medium */
- buf[2] = 2; /* SCSI-2 compliant device */
- buf[3] = 2; /* SCSI-2 response data format */
- buf[4] = 31; /* additional length (bytes) */
- buf[5] = 0; /* reserved */
- buf[6] = 0; /* reserved */
- buf[7] = 0; /* various flags */
- memcpy(buf + 8, "HP SIMULATED DISK 0.00", 28);
- sc->result = GOOD;
- break;
-
- case TEST_UNIT_READY:
- sc->result = GOOD;
- break;
-
- case READ_6:
- if (desc[sc->target] < 0 )
- break;
- simscsi_readwrite6(sc, SSC_READ);
- break;
-
- case READ_10:
- if (desc[sc->target] < 0 )
- break;
- simscsi_readwrite10(sc, SSC_READ);
- break;
-
- case WRITE_6:
- if (desc[sc->target] < 0)
- break;
- simscsi_readwrite6(sc, SSC_WRITE);
- break;
-
- case WRITE_10:
- if (desc[sc->target] < 0)
- break;
- simscsi_readwrite10(sc, SSC_WRITE);
- break;
-
-
- case READ_CAPACITY:
- if (desc[sc->target] < 0 || sc->request_bufflen < 8) {
- break;
- }
- buf = sc->request_buffer;
-
- /* pretend to be a 1GB disk (partition table contains real stuff): */
- buf[0] = 0x00;
- buf[1] = 0x1f;
- buf[2] = 0xff;
- buf[3] = 0xff;
- /* set block size of 512 bytes: */
- buf[4] = 0;
- buf[5] = 0;
- buf[6] = 2;
- buf[7] = 0;
- sc->result = GOOD;
- break;
-
- case MODE_SENSE:
- printk("MODE_SENSE\n");
- break;
-
- case START_STOP:
- printk("START_STOP\n");
- break;
-
- default:
- panic("simscsi: unknown SCSI command %u\n", sc->cmnd[0]);
- }
- }
- if (sc->result == DID_BAD_TARGET) {
- sc->result |= DRIVER_SENSE << 24;
- sc->sense_buffer[0] = 0x70;
- sc->sense_buffer[2] = 0x00;
- }
- if (atomic_read(&num_reqs) >= SIMSCSI_REQ_QUEUE_LEN) {
- panic("Attempt to queue command while command is pending!!");
- }
- atomic_inc(&num_reqs);
- queue[wr].sc = sc;
- wr = (wr + 1) % SIMSCSI_REQ_QUEUE_LEN;
-
- tasklet_schedule(&simscsi_tasklet);
- return 0;
-}
-
-
-static Scsi_Host_Template driver_template = SIMSCSI;
-
-#define __initcall(fn) late_initcall(fn)
-
-#include "../drivers/scsi/scsi_module.c"
diff -urN linux-2.5.8-pre3/arch/ia64/hp/simscsi.h lia64-2.5.8-pre3/arch/ia64/hp/simscsi.h
--- linux-2.5.8-pre3/arch/ia64/hp/simscsi.h Thu Apr 11 15:25:50 2002
+++ lia64-2.5.8-pre3/arch/ia64/hp/simscsi.h Wed Dec 31 16:00:00 1969
@@ -1,39 +0,0 @@
-/*
- * Simulated SCSI driver.
- *
- * Copyright (C) 1999 Hewlett-Packard Co
- * David Mosberger-Tang
- */
-#ifndef SIMSCSI_H
-#define SIMSCSI_H
-
-#define SIMSCSI_REQ_QUEUE_LEN 64
-
-#define DEFAULT_SIMSCSI_ROOT "/var/ski-disks/sd"
-
-extern int simscsi_detect (Scsi_Host_Template *);
-extern int simscsi_release (struct Scsi_Host *);
-extern const char *simscsi_info (struct Scsi_Host *);
-extern int simscsi_queuecommand (Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
-extern int simscsi_abort (Scsi_Cmnd *);
-extern int simscsi_reset (Scsi_Cmnd *, unsigned int);
-extern int simscsi_biosparam (Disk *, kdev_t, int[]);
-
-#define SIMSCSI { \
- detect: simscsi_detect, \
- release: simscsi_release, \
- info: simscsi_info, \
- queuecommand: simscsi_queuecommand, \
- abort: simscsi_abort, \
- reset: simscsi_reset, \
- bios_param: simscsi_biosparam, \
- can_queue: SIMSCSI_REQ_QUEUE_LEN, \
- this_id: -1, \
- sg_tablesize: SG_ALL, \
- cmd_per_lun: SIMSCSI_REQ_QUEUE_LEN, \
- present: 0, \
- unchecked_isa_dma: 0, \
- use_clustering: DISABLE_CLUSTERING \
-}
-
-#endif /* SIMSCSI_H */
diff -urN linux-2.5.8-pre3/arch/ia64/hp/simserial.c lia64-2.5.8-pre3/arch/ia64/hp/simserial.c
--- linux-2.5.8-pre3/arch/ia64/hp/simserial.c Thu Apr 11 15:27:16 2002
+++ lia64-2.5.8-pre3/arch/ia64/hp/simserial.c Wed Dec 31 16:00:00 1969
@@ -1,1104 +0,0 @@
-/*
- * Simulated Serial Driver (fake serial)
- *
- * This driver is mostly used for bringup purposes and will go away.
- * It has a strong dependency on the system console. All outputs
- * are rerouted to the same facility as the one used by printk which, in our
- * case means sys_sim.c console (goes via the simulator). The code hereafter
- * is completely leveraged from the serial.c driver.
- *
- * Copyright (C) 1999-2000 Hewlett-Packard Co
- * Copyright (C) 1999 Stephane Eranian
- * Copyright (C) 2000 David Mosberger-Tang
- *
- * 02/04/00 D. Mosberger Merged in serial.c bug fixes in rs_close().
- * 02/25/00 D. Mosberger Synced up with 2.3.99pre-5 version of serial.c.
- */
-
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-#include
-
-#include
-#include
-
-#ifdef CONFIG_KDB
-# include
-#endif
-
-#undef SIMSERIAL_DEBUG /* define this to get some debug information */
-
-#define KEYBOARD_INTR 3 /* must match with simulator! */
-
-#define NR_PORTS 1 /* only one port for now */
-#define SERIAL_INLINE 1
-
-#ifdef SERIAL_INLINE
-#define _INLINE_ inline
-#endif
-
-#ifndef MIN
-#define MIN(a,b) ((a) < (b) ? (a) : (b))
-#endif
-
-#define IRQ_T(info) ((info->flags & ASYNC_SHARE_IRQ) ? SA_SHIRQ : SA_INTERRUPT)
-
-#define SSC_GETCHAR 21
-
-extern long ia64_ssc (long, long, long, long, int);
-extern void ia64_ssc_connect_irq (long intr, long irq);
-
-static char *serial_name = "SimSerial driver";
-static char *serial_version = "0.6";
-
-/*
- * This has been extracted from asm/serial.h. We need one eventually but
- * I don't know exactly what we're going to put in it so just fake one
- * for now.
- */
-#define BASE_BAUD ( 1843200 / 16 )
-
-#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST)
-
-/*
- * Most of the values here are meaningless to this particular driver.
- * However some values must be preserved for the code (leveraged from serial.c
- * to work correctly).
- * port must not be 0
- * type must not be UNKNOWN
- * So I picked arbitrary (guess from where?) values instead
- */
-static struct serial_state rs_table[NR_PORTS]={
- /* UART CLK PORT IRQ FLAGS */
- { 0, BASE_BAUD, 0x3F8, 0, STD_COM_FLAGS,0,PORT_16550 } /* ttyS0 */
-};
-
-/*
- * Just for the fun of it !
- */
-static struct serial_uart_config uart_config[] = {
- { "unknown", 1, 0 },
- { "8250", 1, 0 },
- { "16450", 1, 0 },
- { "16550", 1, 0 },
- { "16550A", 16, UART_CLEAR_FIFO | UART_USE_FIFO },
- { "cirrus", 1, 0 },
- { "ST16650", 1, UART_CLEAR_FIFO | UART_STARTECH },
- { "ST16650V2", 32, UART_CLEAR_FIFO | UART_USE_FIFO |
- UART_STARTECH },
- { "TI16750", 64, UART_CLEAR_FIFO | UART_USE_FIFO},
- { 0, 0}
-};
-
-static struct tty_driver serial_driver, callout_driver;
-static int serial_refcount;
-
-static struct async_struct *IRQ_ports[NR_IRQS];
-static struct tty_struct *serial_table[NR_PORTS];
-static struct termios *serial_termios[NR_PORTS];
-static struct termios *serial_termios_locked[NR_PORTS];
-
-static struct console *console;
-
-static unsigned char *tmp_buf;
-static DECLARE_MUTEX(tmp_buf_sem);
-
-extern struct console *console_drivers; /* from kernel/printk.c */
-
-/*
- * ------------------------------------------------------------
- * rs_stop() and rs_start()
- *
- * This routines are called before setting or resetting tty->stopped.
- * They enable or disable transmitter interrupts, as necessary.
- * ------------------------------------------------------------
- */
-static void rs_stop(struct tty_struct *tty)
-{
-#ifdef SIMSERIAL_DEBUG
- printk("rs_stop: tty->stopped=%d tty->hw_stopped=%d tty->flow_stopped=%d\n",
- tty->stopped, tty->hw_stopped, tty->flow_stopped);
-#endif
-
-}
-
-static void rs_start(struct tty_struct *tty)
-{
-#if SIMSERIAL_DEBUG
- printk("rs_start: tty->stopped=%d tty->hw_stopped=%d tty->flow_stopped=%d\n",
- tty->stopped, tty->hw_stopped, tty->flow_stopped);
-#endif
-}
-
-static void receive_chars(struct tty_struct *tty, struct pt_regs *regs)
-{
- unsigned char ch;
- static unsigned char seen_esc = 0;
-
- while ( (ch = ia64_ssc(0, 0, 0, 0, SSC_GETCHAR)) ) {
- if ( ch == 27 && seen_esc == 0 ) {
- seen_esc = 1;
- continue;
- } else {
- if ( seen_esc==1 && ch == 'O' ) {
- seen_esc = 2;
- continue;
- } else if ( seen_esc == 2 ) {
- if ( ch == 'P' ) show_state(); /* F1 key */
- if ( ch == 'Q' ) show_buffers(); /* F2 key */
-#ifdef CONFIG_KDB
- if ( ch == 'S' )
- kdb(KDB_REASON_KEYBOARD, 0, (kdb_eframe_t) regs);
-#endif
-
- seen_esc = 0;
- continue;
- }
- }
- seen_esc = 0;
- if (tty->flip.count >= TTY_FLIPBUF_SIZE) break;
-
- *tty->flip.char_buf_ptr = ch;
-
- *tty->flip.flag_buf_ptr = 0;
-
- tty->flip.flag_buf_ptr++;
- tty->flip.char_buf_ptr++;
- tty->flip.count++;
- }
- tty_flip_buffer_push(tty);
-}
-
-/*
- * This is the serial driver's interrupt routine for a single port
- */
-static void rs_interrupt_single(int irq, void *dev_id, struct pt_regs * regs)
-{
- struct async_struct * info;
-
- /*
- * I don't know exactly why they don't use the dev_id opaque data
- * pointer instead of this extra lookup table
- */
- info = IRQ_ports[irq];
- if (!info || !info->tty) {
- printk("simrs_interrupt_single: info|tty=0 info=%p problem\n", info);
- return;
- }
- /*
- * pretty simple in our case, because we only get interrupts
- * on inbound traffic
- */
- receive_chars(info->tty, regs);
-}
-
-/*
- * -------------------------------------------------------------------
- * Here ends the serial interrupt routines.
- * -------------------------------------------------------------------
- */
-
-#if 0
-/*
- * not really used in our situation so keep them commented out for now
- */
-static DECLARE_TASK_QUEUE(tq_serial); /* used to be at the top of the file */
-static void do_serial_bh(void)
-{
- run_task_queue(&tq_serial);
- printk("do_serial_bh: called\n");
-}
-#endif
-
-static void do_softint(void *private_)
-{
- printk("simserial: do_softint called\n");
-}
-
-static void rs_put_char(struct tty_struct *tty, unsigned char ch)
-{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
- unsigned long flags;
-
- if (!tty || !info->xmit.buf) return;
-
- save_flags(flags); cli();
- if (CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE) == 0) {
- restore_flags(flags);
- return;
- }
- info->xmit.buf[info->xmit.head] = ch;
- info->xmit.head = (info->xmit.head + 1) & (SERIAL_XMIT_SIZE-1);
- restore_flags(flags);
-}
-
-static _INLINE_ void transmit_chars(struct async_struct *info, int *intr_done)
-{
- int count;
- unsigned long flags;
-
- save_flags(flags); cli();
-
- if (info->x_char) {
- char c = info->x_char;
-
- console->write(console, &c, 1);
-
- info->state->icount.tx++;
- info->x_char = 0;
-
- goto out;
- }
-
- if (info->xmit.head == info->xmit.tail || info->tty->stopped || info->tty->hw_stopped) {
-#ifdef SIMSERIAL_DEBUG
- printk("transmit_chars: head=%d, tail=%d, stopped=%d\n",
- info->xmit.head, info->xmit.tail, info->tty->stopped);
-#endif
- goto out;
- }
- /*
- * We removed the loop and try to do it in to chunks. We need
- * 2 operations maximum because it's a ring buffer.
- *
- * First from current to tail if possible.
- * Then from the beginning of the buffer until necessary
- */
-
- count = MIN(CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE),
- SERIAL_XMIT_SIZE - info->xmit.tail);
- console->write(console, info->xmit.buf+info->xmit.tail, count);
-
- info->xmit.tail = (info->xmit.tail+count) & (SERIAL_XMIT_SIZE-1);
-
- /*
- * We have more at the beginning of the buffer
- */
- count = CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
- if (count) {
- console->write(console, info->xmit.buf, count);
- info->xmit.tail += count;
- }
-out:
- restore_flags(flags);
-}
-
-static void rs_flush_chars(struct tty_struct *tty)
-{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
-
- if (info->xmit.head == info->xmit.tail || tty->stopped || tty->hw_stopped ||
- !info->xmit.buf)
- return;
-
- transmit_chars(info, NULL);
-}
-
-
-static int rs_write(struct tty_struct * tty, int from_user,
- const unsigned char *buf, int count)
-{
- int c, ret = 0;
- struct async_struct *info = (struct async_struct *)tty->driver_data;
- unsigned long flags;
-
- if (!tty || !info->xmit.buf || !tmp_buf) return 0;
-
- save_flags(flags);
- if (from_user) {
- down(&tmp_buf_sem);
- while (1) {
- int c1;
- c = CIRC_SPACE_TO_END(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
- if (count < c)
- c = count;
- if (c <= 0)
- break;
-
- c -= copy_from_user(tmp_buf, buf, c);
- if (!c) {
- if (!ret)
- ret = -EFAULT;
- break;
- }
- cli();
- c1 = CIRC_SPACE_TO_END(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
- if (c1 < c)
- c = c1;
- memcpy(info->xmit.buf + info->xmit.head, tmp_buf, c);
- info->xmit.head = ((info->xmit.head + c) &
- (SERIAL_XMIT_SIZE-1));
- restore_flags(flags);
- buf += c;
- count -= c;
- ret += c;
- }
- up(&tmp_buf_sem);
- } else {
- cli();
- while (1) {
- c = CIRC_SPACE_TO_END(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
- if (count < c)
- c = count;
- if (c <= 0) {
- break;
- }
- memcpy(info->xmit.buf + info->xmit.head, buf, c);
- info->xmit.head = ((info->xmit.head + c) &
- (SERIAL_XMIT_SIZE-1));
- buf += c;
- count -= c;
- ret += c;
- }
- restore_flags(flags);
- }
- /*
- * Hey, we transmit directly from here in our case
- */
- if (CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE)
- && !tty->stopped && !tty->hw_stopped) {
- transmit_chars(info, NULL);
- }
- return ret;
-}
-
-static int rs_write_room(struct tty_struct *tty)
-{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
-
- return CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
-}
-
-static int rs_chars_in_buffer(struct tty_struct *tty)
-{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
-
- return CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
-}
-
-static void rs_flush_buffer(struct tty_struct *tty)
-{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
- unsigned long flags;
-
- save_flags(flags); cli();
- info->xmit.head = info->xmit.tail = 0;
- restore_flags(flags);
-
- wake_up_interruptible(&tty->write_wait);
-
- if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
- tty->ldisc.write_wakeup)
- (tty->ldisc.write_wakeup)(tty);
-}
-
-/*
- * This function is used to send a high-priority XON/XOFF character to
- * the device
- */
-static void rs_send_xchar(struct tty_struct *tty, char ch)
-{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
-
- info->x_char = ch;
- if (ch) {
- /*
- * I guess we could call console->write() directly but
- * let's do that for now.
- */
- transmit_chars(info, NULL);
- }
-}
-
-/*
- * ------------------------------------------------------------
- * rs_throttle()
- *
- * This routine is called by the upper-layer tty layer to signal that
- * incoming characters should be throttled.
- * ------------------------------------------------------------
- */
-static void rs_throttle(struct tty_struct * tty)
-{
- if (I_IXOFF(tty)) rs_send_xchar(tty, STOP_CHAR(tty));
-
- printk("simrs_throttle called\n");
-}
-
-static void rs_unthrottle(struct tty_struct * tty)
-{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
-
- if (I_IXOFF(tty)) {
- if (info->x_char)
- info->x_char = 0;
- else
- rs_send_xchar(tty, START_CHAR(tty));
- }
- printk("simrs_unthrottle called\n");
-}
-
-/*
- * rs_break() --- routine which turns the break handling on or off
- */
-static void rs_break(struct tty_struct *tty, int break_state)
-{
-}
-
-static int rs_ioctl(struct tty_struct *tty, struct file * file,
- unsigned int cmd, unsigned long arg)
-{
- if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
- (cmd != TIOCSERCONFIG) && (cmd != TIOCSERGSTRUCT) &&
- (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) {
- if (tty->flags & (1 << TTY_IO_ERROR))
- return -EIO;
- }
-
- switch (cmd) {
- case TIOCMGET:
- printk("rs_ioctl: TIOCMGET called\n");
- return -EINVAL;
- case TIOCMBIS:
- case TIOCMBIC:
- case TIOCMSET:
- printk("rs_ioctl: TIOCMBIS/BIC/SET called\n");
- return -EINVAL;
- case TIOCGSERIAL:
- printk("simrs_ioctl TIOCGSERIAL called\n");
- return 0;
- case TIOCSSERIAL:
- printk("simrs_ioctl TIOCSSERIAL called\n");
- return 0;
- case TIOCSERCONFIG:
- printk("rs_ioctl: TIOCSERCONFIG called\n");
- return -EINVAL;
-
- case TIOCSERGETLSR: /* Get line status register */
- printk("rs_ioctl: TIOCSERGETLSR called\n");
- return -EINVAL;
-
- case TIOCSERGSTRUCT:
- printk("rs_ioctl: TIOCSERGSTRUCT called\n");
-#if 0
- if (copy_to_user((struct async_struct *) arg,
- info, sizeof(struct async_struct)))
- return -EFAULT;
-#endif
- return 0;
-
- /*
- * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
- * - mask passed in arg for lines of interest
- * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
- * Caller should use TIOCGICOUNT to see which one it was
- */
- case TIOCMIWAIT:
- printk("rs_ioctl: TIOCMIWAIT: called\n");
- return 0;
- /*
- * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
- * Return: write counters to the user passed counter struct
- * NB: both 1->0 and 0->1 transitions are counted except for
- * RI where only 0->1 is counted.
- */
- case TIOCGICOUNT:
- printk("rs_ioctl: TIOCGICOUNT called\n");
- return 0;
-
- case TIOCSERGWILD:
- case TIOCSERSWILD:
- /* "setserial -W" is called in Debian boot */
- printk ("TIOCSER?WILD ioctl obsolete, ignored.\n");
- return 0;
-
- default:
- return -ENOIOCTLCMD;
- }
- return 0;
-}
-
-#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
-
-static void rs_set_termios(struct tty_struct *tty, struct termios *old_termios)
-{
- unsigned int cflag = tty->termios->c_cflag;
-
- if ( (cflag == old_termios->c_cflag)
- && ( RELEVANT_IFLAG(tty->termios->c_iflag)
- == RELEVANT_IFLAG(old_termios->c_iflag)))
- return;
-
-
- /* Handle turning off CRTSCTS */
- if ((old_termios->c_cflag & CRTSCTS) &&
- !(tty->termios->c_cflag & CRTSCTS)) {
- tty->hw_stopped = 0;
- rs_start(tty);
- }
-}
-/*
- * This routine will shutdown a serial port; interrupts are disabled, and
- * DTR is dropped if the hangup on close termio flag is on.
- */
-static void shutdown(struct async_struct * info)
-{
- unsigned long flags;
- struct serial_state *state;
- int retval;
-
- if (!(info->flags & ASYNC_INITIALIZED)) return;
-
- state = info->state;
-
-#ifdef SIMSERIAL_DEBUG
- printk("Shutting down serial port %d (irq %d)....", info->line,
- state->irq);
-#endif
-
- save_flags(flags); cli(); /* Disable interrupts */
-
- /*
- * First unlink the serial port from the IRQ chain...
- */
- if (info->next_port)
- info->next_port->prev_port = info->prev_port;
- if (info->prev_port)
- info->prev_port->next_port = info->next_port;
- else
- IRQ_ports[state->irq] = info->next_port;
-
- /*
- * Free the IRQ, if necessary
- */
- if (state->irq && (!IRQ_ports[state->irq] ||
- !IRQ_ports[state->irq]->next_port)) {
- if (IRQ_ports[state->irq]) {
- free_irq(state->irq, NULL);
- retval = request_irq(state->irq, rs_interrupt_single,
- IRQ_T(info), "serial", NULL);
-
- if (retval)
- printk("serial shutdown: request_irq: error %d"
- " Couldn't reacquire IRQ.\n", retval);
- } else
- free_irq(state->irq, NULL);
- }
-
- if (info->xmit.buf) {
- free_page((unsigned long) info->xmit.buf);
- info->xmit.buf = 0;
- }
-
- if (info->tty) set_bit(TTY_IO_ERROR, &info->tty->flags);
-
- info->flags &= ~ASYNC_INITIALIZED;
- restore_flags(flags);
-}
-
-/*
- * ------------------------------------------------------------
- * rs_close()
- *
- * This routine is called when the serial port gets closed. First, we
- * wait for the last remaining data to be sent. Then, we unlink its
- * async structure from the interrupt chain if necessary, and we free
- * that IRQ if nothing is left in the chain.
- * ------------------------------------------------------------
- */
-static void rs_close(struct tty_struct *tty, struct file * filp)
-{
- struct async_struct * info = (struct async_struct *)tty->driver_data;
- struct serial_state *state;
- unsigned long flags;
-
- if (!info ) return;
-
- state = info->state;
-
- save_flags(flags); cli();
-
- if (tty_hung_up_p(filp)) {
-#ifdef SIMSERIAL_DEBUG
- printk("rs_close: hung_up\n");
-#endif
- MOD_DEC_USE_COUNT;
- restore_flags(flags);
- return;
- }
-#ifdef SIMSERIAL_DEBUG
- printk("rs_close ttys%d, count = %d\n", info->line, state->count);
-#endif
- if ((tty->count == 1) && (state->count != 1)) {
- /*
- * Uh, oh. tty->count is 1, which means that the tty
- * structure will be freed. state->count should always
- * be one in these conditions. If it's greater than
- * one, we've got real problems, since it means the
- * serial port won't be shutdown.
- */
- printk("rs_close: bad serial port count; tty->count is 1, "
- "state->count is %d\n", state->count);
- state->count = 1;
- }
- if (--state->count < 0) {
- printk("rs_close: bad serial port count for ttys%d: %d\n",
- info->line, state->count);
- state->count = 0;
- }
- if (state->count) {
- MOD_DEC_USE_COUNT;
- restore_flags(flags);
- return;
- }
- info->flags |= ASYNC_CLOSING;
- restore_flags(flags);
-
- /*
- * Now we wait for the transmit buffer to clear; and we notify
- * the line discipline to only process XON/XOFF characters.
- */
- shutdown(info);
- if (tty->driver.flush_buffer) tty->driver.flush_buffer(tty);
- if (tty->ldisc.flush_buffer) tty->ldisc.flush_buffer(tty);
- info->event = 0;
- info->tty = 0;
- if (info->blocked_open) {
- if (info->close_delay) {
- current->state = TASK_INTERRUPTIBLE;
- schedule_timeout(info->close_delay);
- }
- wake_up_interruptible(&info->open_wait);
- }
- info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE|ASYNC_CLOSING);
- wake_up_interruptible(&info->close_wait);
- MOD_DEC_USE_COUNT;
-}
-
-/*
- * rs_wait_until_sent() --- wait until the transmitter is empty
- */
-static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
-{
-}
-
-
-/*
- * rs_hangup() --- called by tty_hangup() when a hangup is signaled.
- */
-static void rs_hangup(struct tty_struct *tty)
-{
- struct async_struct * info = (struct async_struct *)tty->driver_data;
- struct serial_state *state = info->state;
-
-#ifdef SIMSERIAL_DEBUG
- printk("rs_hangup: called\n");
-#endif
-
- state = info->state;
-
- rs_flush_buffer(tty);
- if (info->flags & ASYNC_CLOSING)
- return;
- shutdown(info);
-
- info->event = 0;
- state->count = 0;
- info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE);
- info->tty = 0;
- wake_up_interruptible(&info->open_wait);
-}
-
-
-static int get_async_struct(int line, struct async_struct **ret_info)
-{
- struct async_struct *info;
- struct serial_state *sstate;
-
- sstate = rs_table + line;
- sstate->count++;
- if (sstate->info) {
- *ret_info = sstate->info;
- return 0;
- }
- info = kmalloc(sizeof(struct async_struct), GFP_KERNEL);
- if (!info) {
- sstate->count--;
- return -ENOMEM;
- }
- memset(info, 0, sizeof(struct async_struct));
- init_waitqueue_head(&info->open_wait);
- init_waitqueue_head(&info->close_wait);
- init_waitqueue_head(&info->delta_msr_wait);
- info->magic = SERIAL_MAGIC;
- info->port = sstate->port;
- info->flags = sstate->flags;
- info->xmit_fifo_size = sstate->xmit_fifo_size;
- info->line = line;
- info->tqueue.routine = do_softint;
- info->tqueue.data = info;
- info->state = sstate;
- if (sstate->info) {
- kfree(info);
- *ret_info = sstate->info;
- return 0;
- }
- *ret_info = sstate->info = info;
- return 0;
-}
-
-static int
-startup(struct async_struct *info)
-{
- unsigned long flags;
- int retval=0;
- void (*handler)(int, void *, struct pt_regs *);
- struct serial_state *state= info->state;
- unsigned long page;
-
- page = get_free_page(GFP_KERNEL);
- if (!page)
- return -ENOMEM;
-
- save_flags(flags); cli();
-
- if (info->flags & ASYNC_INITIALIZED) {
- free_page(page);
- goto errout;
- }
-
- if (!state->port || !state->type) {
- if (info->tty) set_bit(TTY_IO_ERROR, &info->tty->flags);
- free_page(page);
- goto errout;
- }
- if (info->xmit.buf)
- free_page(page);
- else
- info->xmit.buf = (unsigned char *) page;
-
-#ifdef SIMSERIAL_DEBUG
- printk("startup: ttys%d (irq %d)...", info->line, state->irq);
-#endif
-
- /*
- * Allocate the IRQ if necessary
- */
- if (state->irq && (!IRQ_ports[state->irq] ||
- !IRQ_ports[state->irq]->next_port)) {
- if (IRQ_ports[state->irq]) {
- retval = -EBUSY;
- goto errout;
- } else
- handler = rs_interrupt_single;
-
- retval = request_irq(state->irq, handler, IRQ_T(info),
- "simserial", NULL);
- if (retval) {
- if (capable(CAP_SYS_ADMIN)) {
- if (info->tty)
- set_bit(TTY_IO_ERROR,
- &info->tty->flags);
- retval = 0;
- }
- goto errout;
- }
- }
-
- /*
- * Insert serial port into IRQ chain.
- */
- info->prev_port = 0;
- info->next_port = IRQ_ports[state->irq];
- if (info->next_port)
- info->next_port->prev_port = info;
- IRQ_ports[state->irq] = info;
-
- if (info->tty) clear_bit(TTY_IO_ERROR, &info->tty->flags);
-
- info->xmit.head = info->xmit.tail = 0;
-
-#if 0
- /*
- * Set up serial timers...
- */
- timer_table[RS_TIMER].expires = jiffies + 2*HZ/100;
- timer_active |= 1 << RS_TIMER;
-#endif
-
- /*
- * Set up the tty->alt_speed kludge
- */
- if (info->tty) {
- if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
- info->tty->alt_speed = 57600;
- if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
- info->tty->alt_speed = 115200;
- if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
- info->tty->alt_speed = 230400;
- if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
- info->tty->alt_speed = 460800;
- }
-
- info->flags |= ASYNC_INITIALIZED;
- restore_flags(flags);
- return 0;
-
-errout:
- restore_flags(flags);
- return retval;
-}
-
-
-/*
- * This routine is called whenever a serial port is opened. It
- * enables interrupts for a serial port, linking in its async structure into
- * the IRQ chain. It also performs the serial-specific
- * initialization for the tty structure.
- */
-static int rs_open(struct tty_struct *tty, struct file * filp)
-{
- struct async_struct *info;
- int retval, line;
- unsigned long page;
-
- MOD_INC_USE_COUNT;
- line = minor(tty->device) - tty->driver.minor_start;
- if ((line < 0) || (line >= NR_PORTS)) {
- MOD_DEC_USE_COUNT;
- return -ENODEV;
- }
- retval = get_async_struct(line, &info);
- if (retval) {
- MOD_DEC_USE_COUNT;
- return retval;
- }
- tty->driver_data = info;
- info->tty = tty;
-
-#ifdef SIMSERIAL_DEBUG
- printk("rs_open %s%d, count = %d\n", tty->driver.name, info->line,
- info->state->count);
-#endif
- info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
-
- if (!tmp_buf) {
- page = get_free_page(GFP_KERNEL);
- if (!page) {
- /* MOD_DEC_USE_COUNT; "info->tty" will cause this? */
- return -ENOMEM;
- }
- if (tmp_buf)
- free_page(page);
- else
- tmp_buf = (unsigned char *) page;
- }
-
- /*
- * If the port is the middle of closing, bail out now
- */
- if (tty_hung_up_p(filp) ||
- (info->flags & ASYNC_CLOSING)) {
- if (info->flags & ASYNC_CLOSING)
- interruptible_sleep_on(&info->close_wait);
- /* MOD_DEC_USE_COUNT; "info->tty" will cause this? */
-#ifdef SERIAL_DO_RESTART
- return ((info->flags & ASYNC_HUP_NOTIFY) ?
- -EAGAIN : -ERESTARTSYS);
-#else
- return -EAGAIN;
-#endif
- }
-
- /*
- * Start up serial port
- */
- retval = startup(info);
- if (retval) {
- /* MOD_DEC_USE_COUNT; "info->tty" will cause this? */
- return retval;
- }
-
- if ((info->state->count == 1) &&
- (info->flags & ASYNC_SPLIT_TERMIOS)) {
- if (tty->driver.subtype == SERIAL_TYPE_NORMAL)
- *tty->termios = info->state->normal_termios;
- else
- *tty->termios = info->state->callout_termios;
- }
-
- /*
- * figure out which console to use (should be one already)
- */
- console = console_drivers;
- while (console) {
- if ((console->flags & CON_ENABLED) && console->write) break;
- console = console->next;
- }
-
- info->session = current->session;
- info->pgrp = current->pgrp;
-
-#ifdef SIMSERIAL_DEBUG
- printk("rs_open ttys%d successful\n", info->line);
-#endif
- return 0;
-}
-
-/*
- * /proc fs routines....
- */
-
-static inline int line_info(char *buf, struct serial_state *state)
-{
- return sprintf(buf, "%d: uart:%s port:%lX irq:%d\n",
- state->line, uart_config[state->type].name,
- state->port, state->irq);
-}
-
-static int rs_read_proc(char *page, char **start, off_t off, int count,
- int *eof, void *data)
-{
- int i, len = 0, l;
- off_t begin = 0;
-
- len += sprintf(page, "simserinfo:1.0 driver:%s\n", serial_version);
- for (i = 0; i < NR_PORTS && len < 4000; i++) {
- l = line_info(page + len, &rs_table[i]);
- len += l;
- if (len+begin > off+count)
- goto done;
- if (len+begin < off) {
- begin += len;
- len = 0;
- }
- }
- *eof = 1;
-done:
- if (off >= len+begin)
- return 0;
- *start = page + (begin-off);
- return ((count < begin+len-off) ? count : begin+len-off);
-}
-
-/*
- * ---------------------------------------------------------------------
- * rs_init() and friends
- *
- * rs_init() is called at boot-time to initialize the serial driver.
- * ---------------------------------------------------------------------
- */
-
-/*
- * This routine prints out the appropriate serial driver version
- * number, and identifies which options were configured into this
- * driver.
- */
-static inline void show_serial_version(void)
-{
- printk(KERN_INFO "%s version %s with", serial_name, serial_version);
- printk(" no serial options enabled\n");
-}
-
-/*
- * The serial driver boot-time initialization code!
- */
-static int __init
-simrs_init (void)
-{
- int i;
- struct serial_state *state;
-
- show_serial_version();
-
- /* Initialize the tty_driver structure */
-
- memset(&serial_driver, 0, sizeof(struct tty_driver));
- serial_driver.magic = TTY_DRIVER_MAGIC;
- serial_driver.driver_name = "simserial";
- serial_driver.name = "ttyS";
- serial_driver.major = TTY_MAJOR;
- serial_driver.minor_start = 64;
- serial_driver.num = 1;
- serial_driver.type = TTY_DRIVER_TYPE_SERIAL;
- serial_driver.subtype = SERIAL_TYPE_NORMAL;
- serial_driver.init_termios = tty_std_termios;
- serial_driver.init_termios.c_cflag =
- B9600 | CS8 | CREAD | HUPCL | CLOCAL;
- serial_driver.flags = TTY_DRIVER_REAL_RAW;
- serial_driver.refcount = &serial_refcount;
- serial_driver.table = serial_table;
- serial_driver.termios = serial_termios;
- serial_driver.termios_locked = serial_termios_locked;
-
- serial_driver.open = rs_open;
- serial_driver.close = rs_close;
- serial_driver.write = rs_write;
- serial_driver.put_char = rs_put_char;
- serial_driver.flush_chars = rs_flush_chars;
- serial_driver.write_room = rs_write_room;
- serial_driver.chars_in_buffer = rs_chars_in_buffer;
- serial_driver.flush_buffer = rs_flush_buffer;
- serial_driver.ioctl = rs_ioctl;
- serial_driver.throttle = rs_throttle;
- serial_driver.unthrottle = rs_unthrottle;
- serial_driver.send_xchar = rs_send_xchar;
- serial_driver.set_termios = rs_set_termios;
- serial_driver.stop = rs_stop;
- serial_driver.start = rs_start;
- serial_driver.hangup = rs_hangup;
- serial_driver.break_ctl = rs_break;
- serial_driver.wait_until_sent = rs_wait_until_sent;
- serial_driver.read_proc = rs_read_proc;
-
- /*
- * Let's have a little bit of fun !
- */
- for (i = 0, state = rs_table; i < NR_PORTS; i++,state++) {
-
- if (state->type == PORT_UNKNOWN) continue;
-
- if (!state->irq) {
- state->irq = ia64_alloc_irq();
- ia64_ssc_connect_irq(KEYBOARD_INTR, state->irq);
- }
-
- printk(KERN_INFO "ttyS%02d at 0x%04lx (irq = %d) is a %s\n",
- state->line,
- state->port, state->irq,
- uart_config[state->type].name);
- }
- /*
- * The callout device is just like normal device except for
- * major number and the subtype code.
- */
- callout_driver = serial_driver;
- callout_driver.name = "cua";
- callout_driver.major = TTYAUX_MAJOR;
- callout_driver.subtype = SERIAL_TYPE_CALLOUT;
- callout_driver.read_proc = 0;
- callout_driver.proc_entry = 0;
-
- if (tty_register_driver(&serial_driver))
- panic("Couldn't register simserial driver\n");
-
- if (tty_register_driver(&callout_driver))
- panic("Couldn't register callout driver\n");
-
- return 0;
-}
-
-#ifndef MODULE
-__initcall(simrs_init);
-#endif
diff -urN linux-2.5.8-pre3/arch/ia64/hp/zx1/Makefile lia64-2.5.8-pre3/arch/ia64/hp/zx1/Makefile
--- linux-2.5.8-pre3/arch/ia64/hp/zx1/Makefile Wed Dec 31 16:00:00 1969
+++ lia64-2.5.8-pre3/arch/ia64/hp/zx1/Makefile Thu Apr 11 16:28:51 2002
@@ -0,0 +1,26 @@
+#
+# ia64/platform/hp/zx1/Makefile
+#
+# Copyright (C) 2002 Hewlett Packard
+# Copyright (C) Alex Williamson (alex_williamson@hp.com)
+#
+
+O_TARGET := zx1.o
+
+obj-y := hpzx1_misc.o
+obj-$(CONFIG_IA64_GENERIC) += hpzx1_machvec.o
+
+include $(TOPDIR)/Rules.make
+#
+# ia64/platform/hp/zx1/Makefile
+#
+# Copyright (C) 2002 Hewlett Packard
+# Copyright (C) Alex Williamson (alex_williamson@hp.com)
+#
+
+O_TARGET := zx1.o
+
+obj-y := hpzx1_misc.o
+obj-$(CONFIG_IA64_GENERIC) += hpzx1_machvec.o
+
+include $(TOPDIR)/Rules.make
diff -urN linux-2.5.8-pre3/arch/ia64/hp/zx1/hpzx1_machvec.c lia64-2.5.8-pre3/arch/ia64/hp/zx1/hpzx1_machvec.c
--- linux-2.5.8-pre3/arch/ia64/hp/zx1/hpzx1_machvec.c Wed Dec 31 16:00:00 1969
+++ lia64-2.5.8-pre3/arch/ia64/hp/zx1/hpzx1_machvec.c Thu Apr 11 16:28:46 2002
@@ -0,0 +1,4 @@
+#define MACHVEC_PLATFORM_NAME hpzx1
+#include
+#define MACHVEC_PLATFORM_NAME hpzx1
+#include
diff -urN linux-2.5.8-pre3/arch/ia64/hp/zx1/hpzx1_misc.c lia64-2.5.8-pre3/arch/ia64/hp/zx1/hpzx1_misc.c
--- linux-2.5.8-pre3/arch/ia64/hp/zx1/hpzx1_misc.c Wed Dec 31 16:00:00 1969
+++ lia64-2.5.8-pre3/arch/ia64/hp/zx1/hpzx1_misc.c Thu Apr 11 16:28:51 2002
@@ -0,0 +1,800 @@
+/*
+ * Misc. support for HP zx1 chipset support
+ *
+ * Copyright (C) 2002 Hewlett-Packard Co
+ * Copyright (C) 2002 Alex Williamson
+ * Copyright (C) 2002 Bjorn Helgaas
+ */
+
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+#include "../drivers/acpi/include/platform/acgcc.h"
+#include "../drivers/acpi/include/actypes.h"
+#include "../drivers/acpi/include/acexcep.h"
+#include "../drivers/acpi/include/acpixf.h"
+#include "../drivers/acpi/include/actbl.h"
+#include "../drivers/acpi/include/acconfig.h"
+#include "../drivers/acpi/include/acmacros.h"
+#include "../drivers/acpi/include/aclocal.h"
+#include "../drivers/acpi/include/acobject.h"
+#include "../drivers/acpi/include/acstruct.h"
+#include "../drivers/acpi/include/acnamesp.h"
+#include "../drivers/acpi/include/acutils.h"
+
+#define PFX "hpzx1: "
+
+struct fake_pci_dev {
+ struct fake_pci_dev *next;
+ unsigned char bus;
+ unsigned int devfn;
+ int sizing; // in middle of BAR sizing operation?
+ unsigned long csr_base;
+ unsigned int csr_size;
+ unsigned long mapped_csrs; // ioremapped
+};
+
+static struct fake_pci_dev *fake_pci_head, **fake_pci_tail = &fake_pci_head;
+
+static struct pci_ops orig_pci_ops;
+
+static inline struct fake_pci_dev *
+fake_pci_find_slot(unsigned char bus, unsigned int devfn)
+{
+ struct fake_pci_dev *dev;
+
+ for (dev = fake_pci_head; dev; dev = dev->next)
+ if (dev->bus == bus && dev->devfn == devfn)
+ return dev;
+ return NULL;
+}
+
+static struct fake_pci_dev *
+alloc_fake_pci_dev(void)
+{
+ struct fake_pci_dev *dev;
+
+ dev = kmalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return NULL;
+
+ memset(dev, 0, sizeof(*dev));
+
+ *fake_pci_tail = dev;
+ fake_pci_tail = &dev->next;
+
+ return dev;
+}
+
+#define HP_CFG_RD(sz, bits, name) \
+static int hp_cfg_read##sz (struct pci_dev *dev, int where, u##bits *value) \
+{ \
+ struct fake_pci_dev *fake_dev; \
+ if (!(fake_dev = fake_pci_find_slot(dev->bus->number, dev->devfn))) \
+ return orig_pci_ops.name(dev, where, value); \
+ \
+ switch (where) { \
+ case PCI_COMMAND: \
+ *value = read##sz(fake_dev->mapped_csrs + where); \
+ *value |= PCI_COMMAND_MEMORY; /* SBA omits this */ \
+ break; \
+ case PCI_BASE_ADDRESS_0: \
+ if (fake_dev->sizing) \
+ *value = ~(fake_dev->csr_size - 1); \
+ else \
+ *value = (fake_dev->csr_base & \
+ PCI_BASE_ADDRESS_MEM_MASK) | \
+ PCI_BASE_ADDRESS_SPACE_MEMORY; \
+ fake_dev->sizing = 0; \
+ break; \
+ default: \
+ *value = read##sz(fake_dev->mapped_csrs + where); \
+ break; \
+ } \
+ return PCIBIOS_SUCCESSFUL; \
+}
+
+#define HP_CFG_WR(sz, bits, name) \
+static int hp_cfg_write##sz (struct pci_dev *dev, int where, u##bits value) \
+{ \
+ struct fake_pci_dev *fake_dev; \
+ if (!(fake_dev = fake_pci_find_slot(dev->bus->number, dev->devfn))) \
+ return orig_pci_ops.name(dev, where, value); \
+ \
+ switch (where) { \
+ case PCI_BASE_ADDRESS_0: \
+ if (value == ~0) \
+ fake_dev->sizing = 1; \
+ break; \
+ default: \
+ write##sz(value, fake_dev->mapped_csrs + where); \
+ break; \
+ } \
+ return PCIBIOS_SUCCESSFUL; \
+}
+
+HP_CFG_RD(b, 8, read_byte)
+HP_CFG_RD(w, 16, read_word)
+HP_CFG_RD(l, 32, read_dword)
+HP_CFG_WR(b, 8, write_byte)
+HP_CFG_WR(w, 16, write_word)
+HP_CFG_WR(l, 32, write_dword)
+
+static struct pci_ops hp_pci_conf = {
+ hp_cfg_readb,
+ hp_cfg_readw,
+ hp_cfg_readl,
+ hp_cfg_writeb,
+ hp_cfg_writew,
+ hp_cfg_writel,
+};
+
+/*
+ * Assume we'll never have a physical slot higher than 0x10, so we can
+ * use slots above that for "fake" PCI devices to represent things
+ * that only show up in the ACPI namespace.
+ */
+#define HP_MAX_SLOT 0x10
+
+static struct fake_pci_dev *
+hpzx1_fake_pci_dev(unsigned long addr, unsigned int bus, unsigned int size)
+{
+ struct fake_pci_dev *dev;
+ int slot;
+
+ // Note: lspci thinks 0x1f is invalid
+ for (slot = 0x1e; slot > HP_MAX_SLOT; slot--) {
+ if (!fake_pci_find_slot(bus, PCI_DEVFN(slot, 0)))
+ break;
+ }
+ if (slot == HP_MAX_SLOT) {
+ printk(KERN_ERR PFX
+ "no slot space for device (0x%p) on bus 0x%02x\n",
+ (void *) addr, bus);
+ return NULL;
+ }
+
+ dev = alloc_fake_pci_dev();
+ if (!dev) {
+ printk(KERN_ERR PFX
+ "no memory for device (0x%p) on bus 0x%02x\n",
+ (void *) addr, bus);
+ return NULL;
+ }
+
+ dev->bus = bus;
+ dev->devfn = PCI_DEVFN(slot, 0);
+ dev->csr_base = addr;
+ dev->csr_size = size;
+
+ /*
+ * Drivers should ioremap what they need, but we have to do
+ * it here, too, so PCI config accesses work.
+ */
+ dev->mapped_csrs = ioremap(dev->csr_base, dev->csr_size);
+
+ return dev;
+}
+
+typedef struct {
+ u8 guid_id;
+ u8 guid[16];
+ u8 csr_base[8];
+ u8 csr_length[8];
+} acpi_hp_vendor_long;
+
+#define HP_CCSR_LENGTH 0x21
+#define HP_CCSR_TYPE 0x2
+#define HP_CCSR_GUID EFI_GUID(0x69e9adf9, 0x924f, 0xab5f, \
+ 0xf6, 0x4a, 0x24, 0xd2, 0x01, 0x37, 0x0e, 0xad)
+
+extern acpi_status acpi_get_crs(acpi_handle, acpi_buffer *);
+extern acpi_resource *acpi_get_crs_next(acpi_buffer *, int *);
+extern acpi_resource_data *acpi_get_crs_type(acpi_buffer *, int *, int);
+extern void acpi_dispose_crs(acpi_buffer *);
+extern acpi_status acpi_cf_evaluate_method(acpi_handle, UINT8 *, NATIVE_UINT *);
+
+static acpi_status
+hp_csr_space(acpi_handle obj, u64 *csr_base, u64 *csr_length)
+{
+ int i, offset = 0;
+ acpi_status status;
+ acpi_buffer buf;
+ acpi_resource_vendor *res;
+ acpi_hp_vendor_long *hp_res;
+ efi_guid_t vendor_guid;
+
+ *csr_base = 0;
+ *csr_length = 0;
+
+ status = acpi_get_crs(obj, &buf);
+ if (status != AE_OK) {
+ printk(KERN_ERR PFX "Unable to get _CRS data on object\n");
+ return status;
+ }
+
+ res = (acpi_resource_vendor *)acpi_get_crs_type(&buf, &offset, ACPI_RSTYPE_VENDOR);
+ if (!res) {
+ printk(KERN_ERR PFX "Failed to find config space for device\n");
+ acpi_dispose_crs(&buf);
+ return AE_NOT_FOUND;
+ }
+
+ hp_res = (acpi_hp_vendor_long *)(res->reserved);
+
+ if (res->length != HP_CCSR_LENGTH || hp_res->guid_id != HP_CCSR_TYPE) {
+ printk(KERN_ERR PFX "Unknown Vendor data\n");
+ acpi_dispose_crs(&buf);
+ return AE_TYPE; /* Revisit error? */
+ }
+
+ memcpy(&vendor_guid, hp_res->guid, sizeof(efi_guid_t));
+ if (efi_guidcmp(vendor_guid, HP_CCSR_GUID) != 0) {
+ printk(KERN_ERR PFX "Vendor GUID does not match\n");
+ acpi_dispose_crs(&buf);
+ return AE_TYPE; /* Revisit error? */
+ }
+
+ for (i = 0 ; i < 8 ; i++) {
+ *csr_base |= ((u64)(hp_res->csr_base[i]) << (i * 8));
+ *csr_length |= ((u64)(hp_res->csr_length[i]) << (i * 8));
+ }
+
+ acpi_dispose_crs(&buf);
+
+ return AE_OK;
+}
+
+static acpi_status
+hpzx1_sba_probe(acpi_handle obj, u32 depth, void *context, void **ret)
+{
+ u64 csr_base = 0, csr_length = 0;
+ char *name = context;
+ struct fake_pci_dev *dev;
+ acpi_status status;
+
+ status = hp_csr_space(obj, &csr_base, &csr_length);
+
+ if (status != AE_OK)
+ return status;
+
+ /*
+ * Only SBA shows up in ACPI namespace, so its CSR space
+ * includes both SBA and IOC. Make SBA and IOC show up
+ * separately in PCI space.
+ */
+ if ((dev = hpzx1_fake_pci_dev(csr_base, 0, 0x1000)))
+ printk(KERN_INFO PFX "%s SBA at 0x%lx; pci dev %02x:%02x.%d\n",
+ name, csr_base, dev->bus,
+ PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
+ if ((dev = hpzx1_fake_pci_dev(csr_base + 0x1000, 0, 0x1000)))
+ printk(KERN_INFO PFX "%s IOC at 0x%lx; pci dev %02x:%02x.%d\n",
+ name, csr_base + 0x1000, dev->bus,
+ PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
+
+ return AE_OK;
+}
+
+static acpi_status
+hpzx1_lba_probe(acpi_handle obj, u32 depth, void *context, void **ret)
+{
+ acpi_status status;
+ u64 csr_base = 0, csr_length = 0;
+ char *name = context;
+ NATIVE_UINT busnum = 0;
+ struct fake_pci_dev *dev;
+
+ status = hp_csr_space(obj, &csr_base, &csr_length);
+
+ if (status != AE_OK)
+ return status;
+
+ status = acpi_cf_evaluate_method(obj, METHOD_NAME__BBN, &busnum);
+ if (ACPI_FAILURE(status)) {
+ printk(KERN_ERR PFX "evaluate _BBN fail=0x%x\n", status);
+ busnum = 0; // no _BBN; stick it on bus 0
+ }
+
+ if ((dev = hpzx1_fake_pci_dev(csr_base, busnum, csr_length)))
+ printk(KERN_INFO PFX "%s LBA at 0x%lx, _BBN 0x%02x; "
+ "pci dev %02x:%02x.%d\n",
+ name, csr_base, busnum, dev->bus,
+ PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
+
+ return AE_OK;
+}
+
+static void
+hpzx1_acpi_dev_init(void)
+{
+ extern struct pci_ops pci_conf;
+
+ /*
+ * Make fake PCI devices for the following hardware in the
+ * ACPI namespace. This makes it more convenient for drivers
+ * because they can claim these devices based on PCI
+ * information, rather than needing to know about ACPI. The
+ * 64-bit "HPA" space for this hardware is available as BAR
+ * 0/1.
+ *
+ * HWP0001: Single IOC SBA w/o IOC in namespace
+ * HWP0002: LBA device
+ * HWP0003: AGP LBA device
+ */
+ acpi_get_devices("HWP0001", hpzx1_sba_probe, "HWP0001", NULL);
+#ifdef CONFIG_IA64_HP_PROTO
+ if (fake_pci_tail != &fake_pci_head) {
+#endif
+ acpi_get_devices("HWP0002", hpzx1_lba_probe, "HWP0002", NULL);
+ acpi_get_devices("HWP0003", hpzx1_lba_probe, "HWP0003", NULL);
+
+#ifdef CONFIG_IA64_HP_PROTO
+ }
+
+#define ZX1_FUNC_ID_VALUE (PCI_DEVICE_ID_HP_ZX1_SBA << 16) | PCI_VENDOR_ID_HP
+ /*
+ * Early protos don't have bridges in the ACPI namespace, so
+ * if we didn't find anything, add the things we know are
+ * there.
+ */
+ if (fake_pci_tail == &fake_pci_head) {
+ u64 hpa, csr_base;
+ struct fake_pci_dev *dev;
+
+ csr_base = 0xfed00000UL;
+ hpa = (u64) ioremap(csr_base, 0x1000);
+ if (__raw_readl(hpa) == ZX1_FUNC_ID_VALUE) {
+ if ((dev = hpzx1_fake_pci_dev(csr_base, 0, 0x1000)))
+ printk(KERN_INFO PFX "HWP0001 SBA at 0x%lx; "
+ "pci dev %02x:%02x.%d\n", csr_base,
+ dev->bus, PCI_SLOT(dev->devfn),
+ PCI_FUNC(dev->devfn));
+ if ((dev = hpzx1_fake_pci_dev(csr_base + 0x1000, 0,
+ 0x1000)))
+ printk(KERN_INFO PFX "HWP0001 IOC at 0x%lx; "
+ "pci dev %02x:%02x.%d\n",
+ csr_base + 0x1000,
+ dev->bus, PCI_SLOT(dev->devfn),
+ PCI_FUNC(dev->devfn));
+
+ csr_base = 0xfed24000UL;
+ iounmap(hpa);
+ hpa = (u64) ioremap(csr_base, 0x1000);
+ if ((dev = hpzx1_fake_pci_dev(csr_base, 0x40, 0x1000)))
+ printk(KERN_INFO PFX "HWP0003 AGP LBA at "
+ "0x%lx; pci dev %02x:%02x.%d\n",
+ csr_base,
+ dev->bus, PCI_SLOT(dev->devfn),
+ PCI_FUNC(dev->devfn));
+ }
+ iounmap(hpa);
+ }
+#endif
+
+ if (fake_pci_tail == &fake_pci_head)
+ return;
+
+ /*
+ * Replace PCI ops, but only if we made fake devices.
+ */
+ orig_pci_ops = pci_conf;
+ pci_conf = hp_pci_conf;
+}
+
+extern void sba_init(void);
+
+void
+hpzx1_pci_fixup (int phase)
+{
+ if (phase == 0)
+ hpzx1_acpi_dev_init();
+ iosapic_pci_fixup(phase);
+ if (phase == 1)
+ sba_init();
+}
+/*
+ * Misc. support for HP zx1 chipset support
+ *
+ * Copyright (C) 2002 Hewlett-Packard Co
+ * Copyright (C) 2002 Alex Williamson
+ * Copyright (C) 2002 Bjorn Helgaas
+ */
+
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+#include "../drivers/acpi/include/platform/acgcc.h"
+#include "../drivers/acpi/include/actypes.h"
+#include "../drivers/acpi/include/acexcep.h"
+#include "../drivers/acpi/include/acpixf.h"
+#include "../drivers/acpi/include/actbl.h"
+#include "../drivers/acpi/include/acconfig.h"
+#include "../drivers/acpi/include/acmacros.h"
+#include "../drivers/acpi/include/aclocal.h"
+#include "../drivers/acpi/include/acobject.h"
+#include "../drivers/acpi/include/acstruct.h"
+#include "../drivers/acpi/include/acnamesp.h"
+#include "../drivers/acpi/include/acutils.h"
+
+#define PFX "hpzx1: "
+
+struct fake_pci_dev {
+ struct fake_pci_dev *next;
+ unsigned char bus;
+ unsigned int devfn;
+ int sizing; // in middle of BAR sizing operation?
+ unsigned long csr_base;
+ unsigned int csr_size;
+ unsigned long mapped_csrs; // ioremapped
+};
+
+static struct fake_pci_dev *fake_pci_head, **fake_pci_tail = &fake_pci_head;
+
+static struct pci_ops orig_pci_ops;
+
+static inline struct fake_pci_dev *
+fake_pci_find_slot(unsigned char bus, unsigned int devfn)
+{
+ struct fake_pci_dev *dev;
+
+ for (dev = fake_pci_head; dev; dev = dev->next)
+ if (dev->bus == bus && dev->devfn == devfn)
+ return dev;
+ return NULL;
+}
+
+static struct fake_pci_dev *
+alloc_fake_pci_dev(void)
+{
+ struct fake_pci_dev *dev;
+
+ dev = kmalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return NULL;
+
+ memset(dev, 0, sizeof(*dev));
+
+ *fake_pci_tail = dev;
+ fake_pci_tail = &dev->next;
+
+ return dev;
+}
+
+#define HP_CFG_RD(sz, bits, name) \
+static int hp_cfg_read##sz (struct pci_dev *dev, int where, u##bits *value) \
+{ \
+ struct fake_pci_dev *fake_dev; \
+ if (!(fake_dev = fake_pci_find_slot(dev->bus->number, dev->devfn))) \
+ return orig_pci_ops.name(dev, where, value); \
+ \
+ switch (where) { \
+ case PCI_COMMAND: \
+ *value = read##sz(fake_dev->mapped_csrs + where); \
+ *value |= PCI_COMMAND_MEMORY; /* SBA omits this */ \
+ break; \
+ case PCI_BASE_ADDRESS_0: \
+ if (fake_dev->sizing) \
+ *value = ~(fake_dev->csr_size - 1); \
+ else \
+ *value = (fake_dev->csr_base & \
+ PCI_BASE_ADDRESS_MEM_MASK) | \
+ PCI_BASE_ADDRESS_SPACE_MEMORY; \
+ fake_dev->sizing = 0; \
+ break; \
+ default: \
+ *value = read##sz(fake_dev->mapped_csrs + where); \
+ break; \
+ } \
+ return PCIBIOS_SUCCESSFUL; \
+}
+
+#define HP_CFG_WR(sz, bits, name) \
+static int hp_cfg_write##sz (struct pci_dev *dev, int where, u##bits value) \
+{ \
+ struct fake_pci_dev *fake_dev; \
+ if (!(fake_dev = fake_pci_find_slot(dev->bus->number, dev->devfn))) \
+ return orig_pci_ops.name(dev, where, value); \
+ \
+ switch (where) { \
+ case PCI_BASE_ADDRESS_0: \
+ if (value == ~0) \
+ fake_dev->sizing = 1; \
+ break; \
+ default: \
+ write##sz(value, fake_dev->mapped_csrs + where); \
+ break; \
+ } \
+ return PCIBIOS_SUCCESSFUL; \
+}
+
+HP_CFG_RD(b, 8, read_byte)
+HP_CFG_RD(w, 16, read_word)
+HP_CFG_RD(l, 32, read_dword)
+HP_CFG_WR(b, 8, write_byte)
+HP_CFG_WR(w, 16, write_word)
+HP_CFG_WR(l, 32, write_dword)
+
+static struct pci_ops hp_pci_conf = {
+ hp_cfg_readb,
+ hp_cfg_readw,
+ hp_cfg_readl,
+ hp_cfg_writeb,
+ hp_cfg_writew,
+ hp_cfg_writel,
+};
+
+/*
+ * Assume we'll never have a physical slot higher than 0x10, so we can
+ * use slots above that for "fake" PCI devices to represent things
+ * that only show up in the ACPI namespace.
+ */
+#define HP_MAX_SLOT 0x10
+
+static struct fake_pci_dev *
+hpzx1_fake_pci_dev(unsigned long addr, unsigned int bus, unsigned int size)
+{
+ struct fake_pci_dev *dev;
+ int slot;
+
+ // Note: lspci thinks 0x1f is invalid
+ for (slot = 0x1e; slot > HP_MAX_SLOT; slot--) {
+ if (!fake_pci_find_slot(bus, PCI_DEVFN(slot, 0)))
+ break;
+ }
+ if (slot == HP_MAX_SLOT) {
+ printk(KERN_ERR PFX
+ "no slot space for device (0x%p) on bus 0x%02x\n",
+ (void *) addr, bus);
+ return NULL;
+ }
+
+ dev = alloc_fake_pci_dev();
+ if (!dev) {
+ printk(KERN_ERR PFX
+ "no memory for device (0x%p) on bus 0x%02x\n",
+ (void *) addr, bus);
+ return NULL;
+ }
+
+ dev->bus = bus;
+ dev->devfn = PCI_DEVFN(slot, 0);
+ dev->csr_base = addr;
+ dev->csr_size = size;
+
+ /*
+ * Drivers should ioremap what they need, but we have to do
+ * it here, too, so PCI config accesses work.
+ */
+ dev->mapped_csrs = (unsigned long) ioremap(dev->csr_base, dev->csr_size);
+
+ return dev;
+}
+
+typedef struct {
+ u8 guid_id;
+ u8 guid[16];
+ u8 csr_base[8];
+ u8 csr_length[8];
+} acpi_hp_vendor_long;
+
+#define HP_CCSR_LENGTH 0x21
+#define HP_CCSR_TYPE 0x2
+#define HP_CCSR_GUID \
+ ((efi_guid_t) { 0x69e9adf9, 0x924f, 0xab5f, { 0xf6, 0x4a, 0x24, 0xd2, 0x01, 0x37, 0x0e, 0xad }})
+
+extern acpi_status acpi_get_crs(acpi_handle, acpi_buffer *);
+extern acpi_resource *acpi_get_crs_next(acpi_buffer *, int *);
+extern acpi_resource_data *acpi_get_crs_type(acpi_buffer *, int *, int);
+extern void acpi_dispose_crs(acpi_buffer *);
+extern acpi_status acpi_cf_evaluate_method(acpi_handle, UINT8 *, NATIVE_UINT *);
+
+static acpi_status
+hp_csr_space(acpi_handle obj, u64 *csr_base, u64 *csr_length)
+{
+ int i, offset = 0;
+ acpi_status status;
+ acpi_buffer buf;
+ acpi_resource_vendor *res;
+ acpi_hp_vendor_long *hp_res;
+ efi_guid_t vendor_guid;
+
+ *csr_base = 0;
+ *csr_length = 0;
+
+ status = acpi_get_crs(obj, &buf);
+ if (status != AE_OK) {
+ printk(KERN_ERR PFX "Unable to get _CRS data on object\n");
+ return status;
+ }
+
+ res = (acpi_resource_vendor *)acpi_get_crs_type(&buf, &offset, ACPI_RSTYPE_VENDOR);
+ if (!res) {
+ printk(KERN_ERR PFX "Failed to find config space for device\n");
+ acpi_dispose_crs(&buf);
+ return AE_NOT_FOUND;
+ }
+
+ hp_res = (acpi_hp_vendor_long *)(res->reserved);
+
+ if (res->length != HP_CCSR_LENGTH || hp_res->guid_id != HP_CCSR_TYPE) {
+ printk(KERN_ERR PFX "Unknown Vendor data\n");
+ acpi_dispose_crs(&buf);
+ return AE_TYPE; /* Revisit error? */
+ }
+
+ memcpy(&vendor_guid, hp_res->guid, sizeof(efi_guid_t));
+ if (efi_guidcmp(vendor_guid, HP_CCSR_GUID) != 0) {
+ printk(KERN_ERR PFX "Vendor GUID does not match\n");
+ acpi_dispose_crs(&buf);
+ return AE_TYPE; /* Revisit error? */
+ }
+
+ for (i = 0 ; i < 8 ; i++) {
+ *csr_base |= ((u64)(hp_res->csr_base[i]) << (i * 8));
+ *csr_length |= ((u64)(hp_res->csr_length[i]) << (i * 8));
+ }
+
+ acpi_dispose_crs(&buf);
+
+ return AE_OK;
+}
+
+static acpi_status
+hpzx1_sba_probe(acpi_handle obj, u32 depth, void *context, void **ret)
+{
+ u64 csr_base = 0, csr_length = 0;
+ char *name = context;
+ struct fake_pci_dev *dev;
+ acpi_status status;
+
+ status = hp_csr_space(obj, &csr_base, &csr_length);
+
+ if (status != AE_OK)
+ return status;
+
+ /*
+ * Only SBA shows up in ACPI namespace, so its CSR space
+ * includes both SBA and IOC. Make SBA and IOC show up
+ * separately in PCI space.
+ */
+ if ((dev = hpzx1_fake_pci_dev(csr_base, 0, 0x1000)))
+ printk(KERN_INFO PFX "%s SBA at 0x%lx; pci dev %02x:%02x.%d\n",
+ name, csr_base, dev->bus,
+ PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
+ if ((dev = hpzx1_fake_pci_dev(csr_base + 0x1000, 0, 0x1000)))
+ printk(KERN_INFO PFX "%s IOC at 0x%lx; pci dev %02x:%02x.%d\n",
+ name, csr_base + 0x1000, dev->bus,
+ PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
+
+ return AE_OK;
+}
+
+static acpi_status
+hpzx1_lba_probe(acpi_handle obj, u32 depth, void *context, void **ret)
+{
+ acpi_status status;
+ u64 csr_base = 0, csr_length = 0;
+ char *name = context;
+ NATIVE_UINT busnum = 0;
+ struct fake_pci_dev *dev;
+
+ status = hp_csr_space(obj, &csr_base, &csr_length);
+
+ if (status != AE_OK)
+ return status;
+
+ status = acpi_cf_evaluate_method(obj, METHOD_NAME__BBN, &busnum);
+ if (ACPI_FAILURE(status)) {
+ printk(KERN_ERR PFX "evaluate _BBN fail=0x%x\n", status);
+ busnum = 0; // no _BBN; stick it on bus 0
+ }
+
+ if ((dev = hpzx1_fake_pci_dev(csr_base, busnum, csr_length)))
+ printk(KERN_INFO PFX "%s LBA at 0x%lx, _BBN 0x%02x; "
+ "pci dev %02x:%02x.%d\n",
+ name, csr_base, busnum, dev->bus,
+ PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
+
+ return AE_OK;
+}
+
+static void
+hpzx1_acpi_dev_init(void)
+{
+ extern struct pci_ops pci_conf;
+
+ /*
+ * Make fake PCI devices for the following hardware in the
+ * ACPI namespace. This makes it more convenient for drivers
+ * because they can claim these devices based on PCI
+ * information, rather than needing to know about ACPI. The
+ * 64-bit "HPA" space for this hardware is available as BAR
+ * 0/1.
+ *
+ * HWP0001: Single IOC SBA w/o IOC in namespace
+ * HWP0002: LBA device
+ * HWP0003: AGP LBA device
+ */
+ acpi_get_devices("HWP0001", hpzx1_sba_probe, "HWP0001", NULL);
+#ifdef CONFIG_IA64_HP_PROTO
+ if (fake_pci_tail != &fake_pci_head) {
+#endif
+ acpi_get_devices("HWP0002", hpzx1_lba_probe, "HWP0002", NULL);
+ acpi_get_devices("HWP0003", hpzx1_lba_probe, "HWP0003", NULL);
+
+#ifdef CONFIG_IA64_HP_PROTO
+ }
+
+#define ZX1_FUNC_ID_VALUE (PCI_DEVICE_ID_HP_ZX1_SBA << 16) | PCI_VENDOR_ID_HP
+ /*
+ * Early protos don't have bridges in the ACPI namespace, so
+ * if we didn't find anything, add the things we know are
+ * there.
+ */
+ if (fake_pci_tail == &fake_pci_head) {
+ u64 hpa, csr_base;
+ struct fake_pci_dev *dev;
+
+ csr_base = 0xfed00000UL;
+ hpa = (u64) ioremap(csr_base, 0x1000);
+ if (__raw_readl(hpa) == ZX1_FUNC_ID_VALUE) {
+ if ((dev = hpzx1_fake_pci_dev(csr_base, 0, 0x1000)))
+ printk(KERN_INFO PFX "HWP0001 SBA at 0x%lx; "
+ "pci dev %02x:%02x.%d\n", csr_base,
+ dev->bus, PCI_SLOT(dev->devfn),
+ PCI_FUNC(dev->devfn));
+ if ((dev = hpzx1_fake_pci_dev(csr_base + 0x1000, 0,
+ 0x1000)))
+ printk(KERN_INFO PFX "HWP0001 IOC at 0x%lx; "
+ "pci dev %02x:%02x.%d\n",
+ csr_base + 0x1000,
+ dev->bus, PCI_SLOT(dev->devfn),
+ PCI_FUNC(dev->devfn));
+
+ csr_base = 0xfed24000UL;
+ iounmap(hpa);
+ hpa = (u64) ioremap(csr_base, 0x1000);
+ if ((dev = hpzx1_fake_pci_dev(csr_base, 0x40, 0x1000)))
+ printk(KERN_INFO PFX "HWP0003 AGP LBA at "
+ "0x%lx; pci dev %02x:%02x.%d\n",
+ csr_base,
+ dev->bus, PCI_SLOT(dev->devfn),
+ PCI_FUNC(dev->devfn));
+ }
+ iounmap(hpa);
+ }
+#endif
+
+ if (fake_pci_tail == &fake_pci_head)
+ return;
+
+ /*
+ * Replace PCI ops, but only if we made fake devices.
+ */
+ orig_pci_ops = pci_conf;
+ pci_conf = hp_pci_conf;
+}
+
+extern void sba_init(void);
+
+void
+hpzx1_pci_fixup (int phase)
+{
+ if (phase == 0)
+ hpzx1_acpi_dev_init();
+ iosapic_pci_fixup(phase);
+ if (phase == 1)
+ sba_init();
+}
diff -urN linux-2.5.8-pre3/arch/ia64/ia32/binfmt_elf32.c lia64-2.5.8-pre3/arch/ia64/ia32/binfmt_elf32.c
--- linux-2.5.8-pre3/arch/ia64/ia32/binfmt_elf32.c Thu Apr 11 15:27:50 2002
+++ lia64-2.5.8-pre3/arch/ia64/ia32/binfmt_elf32.c Thu Apr 11 16:29:45 2002
@@ -47,6 +47,8 @@
#define ELF_PLAT_INIT(_r) ia64_elf32_init(_r)
#define setup_arg_pages(bprm) ia32_setup_arg_pages(bprm)
#define elf_map elf32_map
+
+#undef SET_PERSONALITY
#define SET_PERSONALITY(ex, ibcs2) elf32_set_personality()
/* Ugly but avoids duplication */
diff -urN linux-2.5.8-pre3/arch/ia64/ia32/sys_ia32.c lia64-2.5.8-pre3/arch/ia64/ia32/sys_ia32.c
--- linux-2.5.8-pre3/arch/ia64/ia32/sys_ia32.c Thu Apr 11 15:26:07 2002
+++ lia64-2.5.8-pre3/arch/ia64/ia32/sys_ia32.c Thu Apr 11 16:28:15 2002
@@ -3003,7 +3003,7 @@
if (request != PTRACE_KILL)
goto out;
}
- if (child->p_pptr != current)
+ if (child->parent != current)
goto out;
switch (request) {
diff -urN linux-2.5.8-pre3/arch/ia64/kernel/Makefile lia64-2.5.8-pre3/arch/ia64/kernel/Makefile
--- linux-2.5.8-pre3/arch/ia64/kernel/Makefile Thu Apr 11 15:27:15 2002
+++ lia64-2.5.8-pre3/arch/ia64/kernel/Makefile Thu Apr 11 16:28:52 2002
@@ -17,6 +17,7 @@
machvec.o pal.o process.o perfmon.o ptrace.o sal.o semaphore.o setup.o \
signal.o sys_ia64.o traps.o time.o unaligned.o unwind.o
obj-$(CONFIG_IA64_GENERIC) += iosapic.o
+obj-$(CONFIG_IA64_HP_ZX1) += iosapic.o
obj-$(CONFIG_IA64_DIG) += iosapic.o
obj-$(CONFIG_IA64_PALINFO) += palinfo.o
obj-$(CONFIG_EFI_VARS) += efivars.o
diff -urN linux-2.5.8-pre3/arch/ia64/kernel/acpi.c lia64-2.5.8-pre3/arch/ia64/kernel/acpi.c
--- linux-2.5.8-pre3/arch/ia64/kernel/acpi.c Thu Apr 11 15:27:16 2002
+++ lia64-2.5.8-pre3/arch/ia64/kernel/acpi.c Thu Apr 11 16:28:57 2002
@@ -1,21 +1,34 @@
/*
- * Advanced Configuration and Power Interface
+ * acpi.c - Architecture-Specific Low-Level ACPI Support
*
- * Based on 'ACPI Specification 1.0b' February 2, 1999 and
- * 'IA-64 Extensions to ACPI Specification' Revision 0.6
+ * Copyright (C) 1999 VA Linux Systems
+ * Copyright (C) 1999,2000 Walt Drummond
+ * Copyright (C) 2000 Hewlett-Packard Co.
+ * Copyright (C) 2000 David Mosberger-Tang
+ * Copyright (C) 2000 Intel Corp.
+ * Copyright (C) 2000,2001 J.I. Lee
+ * Copyright (C) 2001 Paul Diefenbaugh
*
- * Copyright (C) 1999 VA Linux Systems
- * Copyright (C) 1999, 2000 Walt Drummond
- * Copyright (C) 2000, 2002 Hewlett-Packard Co.
- * David Mosberger-Tang
- * Copyright (C) 2000 Intel Corp.
- * Copyright (C) 2000, 2001 J.I. Lee
- * ACPI based kernel configuration manager.
- * ACPI 2.0 & IA64 ext 0.71
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#include
-
#include
#include
#include
@@ -23,31 +36,16 @@
#include
#include
#include
-#ifdef CONFIG_SERIAL_ACPI
-#include
-#endif
-
-#include
-#include
+#include
#include
#include
#include