Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

arch/ia64/hp/common/Makefile

@@ -0,0 +1,10 @@
+#
+# ia64/platform/hp/common/Makefile
+#
+# Copyright (C) 2002 Hewlett Packard
+# Copyright (C) Alex Williamson (alex_williamson@hp.com)
+#
+
+obj-y := sba_iommu.o
+obj-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += hwsw_iommu.o
+obj-$(CONFIG_IA64_GENERIC) += hwsw_iommu.o

arch/ia64/hp/common/hwsw_iommu.c

@@ -0,0 +1,185 @@
+/*
+ * Copyright (c) 2004 Hewlett-Packard Development Company, L.P.
+ *   Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
+ *
+ * This is a pseudo I/O MMU which dispatches to the hardware I/O MMU
+ * whenever possible.  We assume that the hardware I/O MMU requires
+ * full 32-bit addressability, as is the case, e.g., for HP zx1-based
+ * systems (there, the I/O MMU window is mapped at 3-4GB).  If a
+ * device doesn't provide full 32-bit addressability, we fall back on
+ * the sw I/O TLB.  This is good enough to let us support broken
+ * hardware such as soundcards which have a DMA engine that can
+ * address only 28 bits.
+ */
+
+#include <linux/device.h>
+
+#include <asm/machvec.h>
+
+/* swiotlb declarations & definitions: */
+extern void swiotlb_init_with_default_size (size_t size);
+extern ia64_mv_dma_alloc_coherent	swiotlb_alloc_coherent;
+extern ia64_mv_dma_free_coherent	swiotlb_free_coherent;
+extern ia64_mv_dma_map_single		swiotlb_map_single;
+extern ia64_mv_dma_unmap_single		swiotlb_unmap_single;
+extern ia64_mv_dma_map_sg		swiotlb_map_sg;
+extern ia64_mv_dma_unmap_sg		swiotlb_unmap_sg;
+extern ia64_mv_dma_supported		swiotlb_dma_supported;
+extern ia64_mv_dma_mapping_error	swiotlb_dma_mapping_error;
+
+/* hwiommu declarations & definitions: */
+
+extern ia64_mv_dma_alloc_coherent	sba_alloc_coherent;
+extern ia64_mv_dma_free_coherent	sba_free_coherent;
+extern ia64_mv_dma_map_single		sba_map_single;
+extern ia64_mv_dma_unmap_single		sba_unmap_single;
+extern ia64_mv_dma_map_sg		sba_map_sg;
+extern ia64_mv_dma_unmap_sg		sba_unmap_sg;
+extern ia64_mv_dma_supported		sba_dma_supported;
+extern ia64_mv_dma_mapping_error	sba_dma_mapping_error;
+
+#define hwiommu_alloc_coherent		sba_alloc_coherent
+#define hwiommu_free_coherent		sba_free_coherent
+#define hwiommu_map_single		sba_map_single
+#define hwiommu_unmap_single		sba_unmap_single
+#define hwiommu_map_sg			sba_map_sg
+#define hwiommu_unmap_sg		sba_unmap_sg
+#define hwiommu_dma_supported		sba_dma_supported
+#define hwiommu_dma_mapping_error	sba_dma_mapping_error
+#define hwiommu_sync_single_for_cpu	machvec_dma_sync_single
+#define hwiommu_sync_sg_for_cpu		machvec_dma_sync_sg
+#define hwiommu_sync_single_for_device	machvec_dma_sync_single
+#define hwiommu_sync_sg_for_device	machvec_dma_sync_sg
+
+
+/*
+ * Note: we need to make the determination of whether or not to use
+ * the sw I/O TLB based purely on the device structure.  Anything else
+ * would be unreliable or would be too intrusive.
+ */
+static inline int
+use_swiotlb (struct device *dev)
+{
+	return dev && dev->dma_mask && !hwiommu_dma_supported(dev, *dev->dma_mask);
+}
+
+void
+hwsw_init (void)
+{
+	/* default to a smallish 2MB sw I/O TLB */
+	swiotlb_init_with_default_size (2 * (1<<20));
+}
+
+void *
+hwsw_alloc_coherent (struct device *dev, size_t size, dma_addr_t *dma_handle, int flags)
+{
+	if (use_swiotlb(dev))
+		return swiotlb_alloc_coherent(dev, size, dma_handle, flags);
+	else
+		return hwiommu_alloc_coherent(dev, size, dma_handle, flags);
+}
+
+void
+hwsw_free_coherent (struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle)
+{
+	if (use_swiotlb(dev))
+		swiotlb_free_coherent(dev, size, vaddr, dma_handle);
+	else
+		hwiommu_free_coherent(dev, size, vaddr, dma_handle);
+}
+
+dma_addr_t
+hwsw_map_single (struct device *dev, void *addr, size_t size, int dir)
+{
+	if (use_swiotlb(dev))
+		return swiotlb_map_single(dev, addr, size, dir);
+	else
+		return hwiommu_map_single(dev, addr, size, dir);
+}
+
+void
+hwsw_unmap_single (struct device *dev, dma_addr_t iova, size_t size, int dir)
+{
+	if (use_swiotlb(dev))
+		return swiotlb_unmap_single(dev, iova, size, dir);
+	else
+		return hwiommu_unmap_single(dev, iova, size, dir);
+}
+
+
+int
+hwsw_map_sg (struct device *dev, struct scatterlist *sglist, int nents, int dir)
+{
+	if (use_swiotlb(dev))
+		return swiotlb_map_sg(dev, sglist, nents, dir);
+	else
+		return hwiommu_map_sg(dev, sglist, nents, dir);
+}
+
+void
+hwsw_unmap_sg (struct device *dev, struct scatterlist *sglist, int nents, int dir)
+{
+	if (use_swiotlb(dev))
+		return swiotlb_unmap_sg(dev, sglist, nents, dir);
+	else
+		return hwiommu_unmap_sg(dev, sglist, nents, dir);
+}
+
+void
+hwsw_sync_single_for_cpu (struct device *dev, dma_addr_t addr, size_t size, int dir)
+{
+	if (use_swiotlb(dev))
+		swiotlb_sync_single_for_cpu(dev, addr, size, dir);
+	else
+		hwiommu_sync_single_for_cpu(dev, addr, size, dir);
+}
+
+void
+hwsw_sync_sg_for_cpu (struct device *dev, struct scatterlist *sg, int nelems, int dir)
+{
+	if (use_swiotlb(dev))
+		swiotlb_sync_sg_for_cpu(dev, sg, nelems, dir);
+	else
+		hwiommu_sync_sg_for_cpu(dev, sg, nelems, dir);
+}
+
+void
+hwsw_sync_single_for_device (struct device *dev, dma_addr_t addr, size_t size, int dir)
+{
+	if (use_swiotlb(dev))
+		swiotlb_sync_single_for_device(dev, addr, size, dir);
+	else
+		hwiommu_sync_single_for_device(dev, addr, size, dir);
+}
+
+void
+hwsw_sync_sg_for_device (struct device *dev, struct scatterlist *sg, int nelems, int dir)
+{
+	if (use_swiotlb(dev))
+		swiotlb_sync_sg_for_device(dev, sg, nelems, dir);
+	else
+		hwiommu_sync_sg_for_device(dev, sg, nelems, dir);
+}
+
+int
+hwsw_dma_supported (struct device *dev, u64 mask)
+{
+	if (hwiommu_dma_supported(dev, mask))
+		return 1;
+	return swiotlb_dma_supported(dev, mask);
+}
+
+int
+hwsw_dma_mapping_error (dma_addr_t dma_addr)
+{
+	return hwiommu_dma_mapping_error (dma_addr) || swiotlb_dma_mapping_error(dma_addr);
+}
+
+EXPORT_SYMBOL(hwsw_dma_mapping_error);
+EXPORT_SYMBOL(hwsw_map_single);
+EXPORT_SYMBOL(hwsw_unmap_single);
+EXPORT_SYMBOL(hwsw_map_sg);
+EXPORT_SYMBOL(hwsw_unmap_sg);
+EXPORT_SYMBOL(hwsw_dma_supported);
+EXPORT_SYMBOL(hwsw_alloc_coherent);
+EXPORT_SYMBOL(hwsw_free_coherent);

arch/ia64/hp/sim/Kconfig

@@ -0,0 +1,20 @@
+
+menu "HP Simulator drivers"
+	depends on IA64_HP_SIM || IA64_GENERIC
+
+config HP_SIMETH
+	bool "Simulated Ethernet "
+
+config HP_SIMSERIAL
+	bool "Simulated serial driver support"
+
+config HP_SIMSERIAL_CONSOLE
+	bool "Console for HP simulator"
+	depends on HP_SIMSERIAL
+
+config HP_SIMSCSI
+	tristate "Simulated SCSI disk"
+	depends on SCSI
+
+endmenu
+

arch/ia64/hp/sim/Makefile

@@ -0,0 +1,16 @@
+#
+# ia64/platform/hp/sim/Makefile
+#
+# Copyright (C) 2002 Hewlett-Packard Co.
+#	David Mosberger-Tang <davidm@hpl.hp.com>
+# Copyright (C) 1999 Silicon Graphics, Inc.
+# Copyright (C) Srinivasa Thirumalachar (sprasad@engr.sgi.com)
+#
+
+obj-y := hpsim_irq.o hpsim_setup.o hpsim.o
+obj-$(CONFIG_IA64_GENERIC) += hpsim_machvec.o
+
+obj-$(CONFIG_HP_SIMETH)	+= simeth.o
+obj-$(CONFIG_HP_SIMSERIAL) += simserial.o
+obj-$(CONFIG_HP_SIMSERIAL_CONSOLE) += hpsim_console.o
+obj-$(CONFIG_HP_SIMSCSI) += simscsi.o

arch/ia64/hp/sim/boot/Makefile

@@ -0,0 +1,37 @@
+#
+# ia64/boot/Makefile
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License.  See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+# Copyright (C) 1998, 2003 by David Mosberger-Tang <davidm@hpl.hp.com>
+#
+
+targets-$(CONFIG_IA64_HP_SIM)  += bootloader
+targets := vmlinux.bin vmlinux.gz $(targets-y)
+
+quiet_cmd_cptotop = LN      $@
+      cmd_cptotop = ln -f $< $@
+
+vmlinux.gz: $(obj)/vmlinux.gz $(addprefix $(obj)/,$(targets-y))
+	$(call cmd,cptotop)
+	@echo '  Kernel: $@ is ready'
+
+boot: bootloader
+
+bootloader: $(obj)/bootloader
+	$(call cmd,cptotop)
+
+$(obj)/vmlinux.gz: $(obj)/vmlinux.bin FORCE
+	$(call if_changed,gzip)
+
+$(obj)/vmlinux.bin: vmlinux FORCE
+	$(call if_changed,objcopy)
+
+
+LDFLAGS_bootloader = -static -T
+
+$(obj)/bootloader: $(src)/bootloader.lds $(obj)/bootloader.o $(obj)/boot_head.o $(obj)/fw-emu.o \
+                   lib/lib.a arch/ia64/lib/lib.a FORCE
+	$(call if_changed,ld)

arch/ia64/hp/sim/boot/boot_head.S

@@ -0,0 +1,144 @@
+/*
+ * Copyright (C) 1998-2003 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
+ */
+
+#include <asm/asmmacro.h>
+
+	.bss
+	.align 16
+stack_mem:
+	.skip 16834
+
+	.text
+
+/* This needs to be defined because lib/string.c:strlcat() calls it in case of error... */
+GLOBAL_ENTRY(printk)
+	break 0
+END(printk)
+
+GLOBAL_ENTRY(_start)
+	.prologue
+	.save rp, r0
+	.body
+	movl gp = __gp
+	movl sp = stack_mem
+	bsw.1
+	br.call.sptk.many rp=start_bootloader
+END(_start)
+
+/*
+ * Set a break point on this function so that symbols are available to set breakpoints in
+ * the kernel being debugged.
+ */
+GLOBAL_ENTRY(debug_break)
+	br.ret.sptk.many b0
+END(debug_break)
+
+GLOBAL_ENTRY(ssc)
+	.regstk 5,0,0,0
+	mov r15=in4
+	break 0x80001
+	br.ret.sptk.many b0
+END(ssc)
+
+GLOBAL_ENTRY(jmp_to_kernel)
+	.regstk 2,0,0,0
+	mov r28=in0
+	mov b7=in1
+	br.sptk.few b7
+END(jmp_to_kernel)
+
+
+GLOBAL_ENTRY(pal_emulator_static)
+	mov r8=-1
+	mov r9=256
+	;;
+	cmp.gtu p6,p7=r9,r28		/* r28 <= 255? */
+(p6)	br.cond.sptk.few static
+	;;
+	mov r9=512
+	;;
+	cmp.gtu p6,p7=r9,r28
+(p6)	br.cond.sptk.few stacked
+	;;
+static:	cmp.eq p6,p7=6,r28		/* PAL_PTCE_INFO */
+(p7)	br.cond.sptk.few 1f
+	;;
+	mov r8=0			/* status = 0 */
+	movl r9=0x100000000		/* tc.base */
+	movl r10=0x0000000200000003	/* count[0], count[1] */
+	movl r11=0x1000000000002000	/* stride[0], stride[1] */
+	br.cond.sptk.few rp
+1:	cmp.eq p6,p7=14,r28		/* PAL_FREQ_RATIOS */
+(p7)	br.cond.sptk.few 1f
+	mov r8=0			/* status = 0 */
+	movl r9 =0x100000064		/* proc_ratio (1/100) */
+	movl r10=0x100000100		/* bus_ratio<<32 (1/256) */
+	movl r11=0x100000064		/* itc_ratio<<32 (1/100) */
+	;;
+1:	cmp.eq p6,p7=19,r28		/* PAL_RSE_INFO */
+(p7)	br.cond.sptk.few 1f
+	mov r8=0			/* status = 0 */
+	mov r9=96			/* num phys stacked */
+	mov r10=0			/* hints */
+	mov r11=0
+	br.cond.sptk.few rp
+1:	cmp.eq p6,p7=1,r28		/* PAL_CACHE_FLUSH */
+(p7)	br.cond.sptk.few 1f
+	mov r9=ar.lc
+	movl r8=524288			/* flush 512k million cache lines (16MB) */
+	;;
+	mov ar.lc=r8
+	movl r8=0xe000000000000000
+	;;
+.loop:	fc r8
+	add r8=32,r8
+	br.cloop.sptk.few .loop
+	sync.i
+	;;
+	srlz.i
+	;;
+	mov ar.lc=r9
+	mov r8=r0
+	;;
+1:	cmp.eq p6,p7=15,r28		/* PAL_PERF_MON_INFO */
+(p7)	br.cond.sptk.few 1f
+	mov r8=0			/* status = 0 */
+	movl r9 =0x08122f04		/* generic=4 width=47 retired=8 cycles=18 */
+	mov r10=0			/* reserved */
+	mov r11=0			/* reserved */
+	mov r16=0xffff			/* implemented PMC */
+	mov r17=0x3ffff			/* implemented PMD */
+	add r18=8,r29			/* second index */
+	;;
+	st8 [r29]=r16,16		/* store implemented PMC */
+	st8 [r18]=r0,16			/* clear remaining bits  */
+	;;
+	st8 [r29]=r0,16			/* clear remaining bits  */
+	st8 [r18]=r0,16			/* clear remaining bits  */
+	;;
+	st8 [r29]=r17,16		/* store implemented PMD */
+	st8 [r18]=r0,16			/* clear remaining bits  */
+	mov r16=0xf0			/* cycles count capable PMC */
+	;;
+	st8 [r29]=r0,16			/* clear remaining bits  */
+	st8 [r18]=r0,16			/* clear remaining bits  */
+	mov r17=0xf0			/* retired bundles capable PMC */
+	;;
+	st8 [r29]=r16,16		/* store cycles capable */
+	st8 [r18]=r0,16			/* clear remaining bits  */
+	;;
+	st8 [r29]=r0,16			/* clear remaining bits  */
+	st8 [r18]=r0,16			/* clear remaining bits  */
+	;;
+	st8 [r29]=r17,16		/* store retired bundle capable */
+	st8 [r18]=r0,16			/* clear remaining bits  */
+	;;
+	st8 [r29]=r0,16			/* clear remaining bits  */
+	st8 [r18]=r0,16			/* clear remaining bits  */
+	;;
+1:	br.cond.sptk.few rp
+stacked:
+	br.ret.sptk.few rp
+END(pal_emulator_static)

arch/ia64/hp/sim/boot/bootloader.c

@@ -0,0 +1,176 @@
+/*
+ * arch/ia64/hp/sim/boot/bootloader.c
+ *
+ * Loads an ELF kernel.
+ *
+ * Copyright (C) 1998-2003 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
+ *	Stephane Eranian <eranian@hpl.hp.com>
+ *
+ * 01/07/99 S.Eranian modified to pass command line arguments to kernel
+ */
+struct task_struct;	/* forward declaration for elf.h */
+
+#include <linux/config.h>
+#include <linux/elf.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+
+#include <asm/elf.h>
+#include <asm/intrinsics.h>
+#include <asm/pal.h>
+#include <asm/pgtable.h>
+#include <asm/sal.h>
+#include <asm/system.h>
+
+#include "ssc.h"
+
+struct disk_req {
+	unsigned long addr;
+	unsigned len;
+};
+
+struct disk_stat {
+	int fd;
+	unsigned count;
+};
+
+extern void jmp_to_kernel (unsigned long bp, unsigned long e_entry);
+extern struct ia64_boot_param *sys_fw_init (const char *args, int arglen);
+extern void debug_break (void);
+
+static void
+cons_write (const char *buf)
+{
+	unsigned long ch;
+
+	while ((ch = *buf++) != '\0') {
+		ssc(ch, 0, 0, 0, SSC_PUTCHAR);
+		if (ch == '\n')
+		  ssc('\r', 0, 0, 0, SSC_PUTCHAR);
+	}
+}
+
+#define MAX_ARGS 32
+
+void
+start_bootloader (void)
+{
+	static char mem[4096];
+	static char buffer[1024];
+	unsigned long off;
+	int fd, i;
+	struct disk_req req;
+	struct disk_stat stat;
+	struct elfhdr *elf;
+	struct elf_phdr *elf_phdr;	/* program header */
+	unsigned long e_entry, e_phoff, e_phnum;
+	register struct ia64_boot_param *bp;
+	char *kpath, *args;
+	long arglen = 0;
+
+	ssc(0, 0, 0, 0, SSC_CONSOLE_INIT);
+
+	/*
+	 * S.Eranian: extract the commandline argument from the simulator
+	 *
+	 * The expected format is as follows:
+         *
+	 *	kernelname args...
+	 *
+	 * Both are optional but you can't have the second one without the first.
+	 */
+	arglen = ssc((long) buffer, 0, 0, 0, SSC_GET_ARGS);
+
+	kpath = "vmlinux";
+	args = buffer;
+	if (arglen > 0) {
+		kpath = buffer;
+		while (*args != ' ' && *args != '\0')
+			++args, --arglen;
+		if (*args == ' ')
+			*args++ = '\0', --arglen;
+	}
+
+	if (arglen <= 0) {
+		args = "";
+		arglen = 1;
+	}
+
+	fd = ssc((long) kpath, 1, 0, 0, SSC_OPEN);
+
+	if (fd < 0) {
+		cons_write(kpath);
+		cons_write(": file not found, reboot now\n");
+		for(;;);
+	}
+	stat.fd = fd;
+	off = 0;
+
+	req.len = sizeof(mem);
+	req.addr = (long) mem;
+	ssc(fd, 1, (long) &req, off, SSC_READ);
+	ssc((long) &stat, 0, 0, 0, SSC_WAIT_COMPLETION);
+
+	elf = (struct elfhdr *) mem;
+	if (elf->e_ident[0] == 0x7f && strncmp(elf->e_ident + 1, "ELF", 3) != 0) {
+		cons_write("not an ELF file\n");
+		return;
+	}
+	if (elf->e_type != ET_EXEC) {
+		cons_write("not an ELF executable\n");
+		return;
+	}
+	if (!elf_check_arch(elf)) {
+		cons_write("kernel not for this processor\n");
+		return;
+	}
+
+	e_entry = elf->e_entry;
+	e_phnum = elf->e_phnum;
+	e_phoff = elf->e_phoff;
+
+	cons_write("loading ");
+	cons_write(kpath);
+	cons_write("...\n");
+
+	for (i = 0; i < e_phnum; ++i) {
+		req.len = sizeof(*elf_phdr);
+		req.addr = (long) mem;
+		ssc(fd, 1, (long) &req, e_phoff, SSC_READ);
+		ssc((long) &stat, 0, 0, 0, SSC_WAIT_COMPLETION);
+		if (stat.count != sizeof(*elf_phdr)) {
+			cons_write("failed to read phdr\n");
+			return;
+		}
+		e_phoff += sizeof(*elf_phdr);
+
+		elf_phdr = (struct elf_phdr *) mem;
+
+		if (elf_phdr->p_type != PT_LOAD)
+			continue;
+
+		req.len = elf_phdr->p_filesz;
+		req.addr = __pa(elf_phdr->p_paddr);
+		ssc(fd, 1, (long) &req, elf_phdr->p_offset, SSC_READ);
+		ssc((long) &stat, 0, 0, 0, SSC_WAIT_COMPLETION);
+		memset((char *)__pa(elf_phdr->p_paddr) + elf_phdr->p_filesz, 0,
+		       elf_phdr->p_memsz - elf_phdr->p_filesz);
+	}
+	ssc(fd, 0, 0, 0, SSC_CLOSE);
+
+	cons_write("starting kernel...\n");
+
+	/* fake an I/O base address: */
+	ia64_setreg(_IA64_REG_AR_KR0, 0xffffc000000UL);
+
+	bp = sys_fw_init(args, arglen);
+
+	ssc(0, (long) kpath, 0, 0, SSC_LOAD_SYMBOLS);
+
+	debug_break();
+	jmp_to_kernel((unsigned long) bp, e_entry);
+
+	cons_write("kernel returned!\n");
+	ssc(-1, 0, 0, 0, SSC_EXIT);
+}

arch/ia64/hp/sim/boot/bootloader.lds

@@ -0,0 +1,65 @@
+OUTPUT_FORMAT("elf64-ia64-little")
+OUTPUT_ARCH(ia64)
+ENTRY(_start)
+SECTIONS
+{
+  /* Read-only sections, merged into text segment: */
+  . = 0x100000;
+
+  _text = .;
+  .text : { *(__ivt_section) *(.text) }
+  _etext = .;
+
+  /* Global data */
+  _data = .;
+  .rodata : { *(.rodata) *(.rodata.*) }
+  .data    : { *(.data) *(.gnu.linkonce.d*) CONSTRUCTORS }
+  __gp = ALIGN (8) + 0x200000;
+  .got           : { *(.got.plt) *(.got) }
+  /* We want the small data sections together, so single-instruction offsets
+     can access them all, and initialized data all before uninitialized, so
+     we can shorten the on-disk segment size.  */
+  .sdata     : { *(.sdata) }
+  _edata  =  .;
+
+  _bss = .;
+  .sbss      : { *(.sbss) *(.scommon) }
+  .bss       : { *(.bss) *(COMMON) }
+  . = ALIGN(64 / 8);
+  _end = . ;
+
+  /* Stabs debugging sections.  */
+  .stab 0 : { *(.stab) }
+  .stabstr 0 : { *(.stabstr) }
+  .stab.excl 0 : { *(.stab.excl) }
+  .stab.exclstr 0 : { *(.stab.exclstr) }
+  .stab.index 0 : { *(.stab.index) }
+  .stab.indexstr 0 : { *(.stab.indexstr) }
+  .comment 0 : { *(.comment) }
+  /* DWARF debug sections.
+     Symbols in the DWARF debugging sections are relative to the beginning
+     of the section so we begin them at 0.  */
+  /* DWARF 1 */
+  .debug          0 : { *(.debug) }
+  .line           0 : { *(.line) }
+  /* GNU DWARF 1 extensions */
+  .debug_srcinfo  0 : { *(.debug_srcinfo) }
+  .debug_sfnames  0 : { *(.debug_sfnames) }
+  /* DWARF 1.1 and DWARF 2 */
+  .debug_aranges  0 : { *(.debug_aranges) }
+  .debug_pubnames 0 : { *(.debug_pubnames) }
+  /* DWARF 2 */
+  .debug_info     0 : { *(.debug_info) }
+  .debug_abbrev   0 : { *(.debug_abbrev) }
+  .debug_line     0 : { *(.debug_line) }
+  .debug_frame    0 : { *(.debug_frame) }
+  .debug_str      0 : { *(.debug_str) }
+  .debug_loc      0 : { *(.debug_loc) }
+  .debug_macinfo  0 : { *(.debug_macinfo) }
+  /* SGI/MIPS DWARF 2 extensions */
+  .debug_weaknames 0 : { *(.debug_weaknames) }
+  .debug_funcnames 0 : { *(.debug_funcnames) }
+  .debug_typenames 0 : { *(.debug_typenames) }
+  .debug_varnames  0 : { *(.debug_varnames) }
+  /* These must appear regardless of  .  */
+}

arch/ia64/hp/sim/boot/fw-emu.c

@@ -0,0 +1,398 @@
+/*
+ * PAL & SAL emulation.
+ *
+ * Copyright (C) 1998-2001 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
+ */
+#include <linux/config.h>
+
+#ifdef CONFIG_PCI
+# include <linux/pci.h>
+#endif
+
+#include <linux/efi.h>
+#include <asm/io.h>
+#include <asm/pal.h>
+#include <asm/sal.h>
+
+#include "ssc.h"
+
+#define MB	(1024*1024UL)
+
+#define SIMPLE_MEMMAP	1
+
+#if SIMPLE_MEMMAP
+# define NUM_MEM_DESCS	4
+#else
+# define NUM_MEM_DESCS	16
+#endif
+
+static char fw_mem[(  sizeof(struct ia64_boot_param)
+		    + sizeof(efi_system_table_t)
+		    + sizeof(efi_runtime_services_t)
+		    + 1*sizeof(efi_config_table_t)
+		    + sizeof(struct ia64_sal_systab)
+		    + sizeof(struct ia64_sal_desc_entry_point)
+		    + NUM_MEM_DESCS*(sizeof(efi_memory_desc_t))
+		    + 1024)] __attribute__ ((aligned (8)));
+
+#define SECS_PER_HOUR   (60 * 60)
+#define SECS_PER_DAY    (SECS_PER_HOUR * 24)
+
+/* Compute the `struct tm' representation of *T,
+   offset OFFSET seconds east of UTC,
+   and store year, yday, mon, mday, wday, hour, min, sec into *TP.
+   Return nonzero if successful.  */
+int
+offtime (unsigned long t, efi_time_t *tp)
+{
+	const unsigned short int __mon_yday[2][13] =
+	{
+		/* Normal years.  */
+		{ 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
+		/* Leap years.  */
+		{ 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
+	};
+	long int days, rem, y;
+	const unsigned short int *ip;
+
+	days = t / SECS_PER_DAY;
+	rem = t % SECS_PER_DAY;
+	while (rem < 0) {
+		rem += SECS_PER_DAY;
+		--days;
+	}
+	while (rem >= SECS_PER_DAY) {
+		rem -= SECS_PER_DAY;
+		++days;
+	}
+	tp->hour = rem / SECS_PER_HOUR;
+	rem %= SECS_PER_HOUR;
+	tp->minute = rem / 60;
+	tp->second = rem % 60;
+	/* January 1, 1970 was a Thursday.  */
+	y = 1970;
+
+#	define DIV(a, b) ((a) / (b) - ((a) % (b) < 0))
+#	define LEAPS_THRU_END_OF(y) (DIV (y, 4) - DIV (y, 100) + DIV (y, 400))
+#	define __isleap(year) \
+	  ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
+
+	while (days < 0 || days >= (__isleap (y) ? 366 : 365)) {
+		/* Guess a corrected year, assuming 365 days per year.  */
+		long int yg = y + days / 365 - (days % 365 < 0);
+
+		/* Adjust DAYS and Y to match the guessed year.  */
+		days -= ((yg - y) * 365 + LEAPS_THRU_END_OF (yg - 1)
+			 - LEAPS_THRU_END_OF (y - 1));
+		y = yg;
+	}
+	tp->year = y;
+	ip = __mon_yday[__isleap(y)];
+	for (y = 11; days < (long int) ip[y]; --y)
+		continue;
+	days -= ip[y];
+	tp->month = y + 1;
+	tp->day = days + 1;
+	return 1;
+}
+
+extern void pal_emulator_static (void);
+
+/* Macro to emulate SAL call using legacy IN and OUT calls to CF8, CFC etc.. */
+
+#define BUILD_CMD(addr)		((0x80000000 | (addr)) & ~3)
+
+#define REG_OFFSET(addr)	(0x00000000000000FF & (addr))
+#define DEVICE_FUNCTION(addr)	(0x000000000000FF00 & (addr))
+#define BUS_NUMBER(addr)	(0x0000000000FF0000 & (addr))
+
+static efi_status_t
+fw_efi_get_time (efi_time_t *tm, efi_time_cap_t *tc)
+{
+#if defined(CONFIG_IA64_HP_SIM) || defined(CONFIG_IA64_GENERIC)
+	struct {
+		int tv_sec;	/* must be 32bits to work */
+		int tv_usec;
+	} tv32bits;
+
+	ssc((unsigned long) &tv32bits, 0, 0, 0, SSC_GET_TOD);
+
+	memset(tm, 0, sizeof(*tm));
+	offtime(tv32bits.tv_sec, tm);
+
+	if (tc)
+		memset(tc, 0, sizeof(*tc));
+#else
+#	error Not implemented yet...
+#endif
+	return EFI_SUCCESS;
+}
+
+static void
+efi_reset_system (int reset_type, efi_status_t status, unsigned long data_size, efi_char16_t *data)
+{
+#if defined(CONFIG_IA64_HP_SIM) || defined(CONFIG_IA64_GENERIC)
+	ssc(status, 0, 0, 0, SSC_EXIT);
+#else
+#	error Not implemented yet...
+#endif
+}
+
+static efi_status_t
+efi_unimplemented (void)
+{
+	return EFI_UNSUPPORTED;
+}
+
+static struct sal_ret_values
+sal_emulator (long index, unsigned long in1, unsigned long in2,
+	      unsigned long in3, unsigned long in4, unsigned long in5,
+	      unsigned long in6, unsigned long in7)
+{
+	long r9  = 0;
+	long r10 = 0;
+	long r11 = 0;
+	long status;
+
+	/*
+	 * Don't do a "switch" here since that gives us code that
+	 * isn't self-relocatable.
+	 */
+	status = 0;
+	if (index == SAL_FREQ_BASE) {
+		switch (in1) {
+		      case SAL_FREQ_BASE_PLATFORM:
+			r9 = 200000000;
+			break;
+
+		      case SAL_FREQ_BASE_INTERVAL_TIMER:
+			/*
+			 * Is this supposed to be the cr.itc frequency
+			 * or something platform specific?  The SAL
+			 * doc ain't exactly clear on this...
+			 */
+			r9 = 700000000;
+			break;
+
+		      case SAL_FREQ_BASE_REALTIME_CLOCK:
+			r9 = 1;
+			break;
+
+		      default:
+			status = -1;
+			break;
+		}
+	} else if (index == SAL_SET_VECTORS) {
+		;
+	} else if (index == SAL_GET_STATE_INFO) {
+		;
+	} else if (index == SAL_GET_STATE_INFO_SIZE) {
+		;
+	} else if (index == SAL_CLEAR_STATE_INFO) {
+		;
+	} else if (index == SAL_MC_RENDEZ) {
+		;
+	} else if (index == SAL_MC_SET_PARAMS) {
+		;
+	} else if (index == SAL_CACHE_FLUSH) {
+		;
+	} else if (index == SAL_CACHE_INIT) {
+		;
+#ifdef CONFIG_PCI
+	} else if (index == SAL_PCI_CONFIG_READ) {
+		/*
+		 * in1 contains the PCI configuration address and in2
+		 * the size of the read.  The value that is read is
+		 * returned via the general register r9.
+		 */
+                outl(BUILD_CMD(in1), 0xCF8);
+                if (in2 == 1)                           /* Reading byte  */
+                        r9 = inb(0xCFC + ((REG_OFFSET(in1) & 3)));
+                else if (in2 == 2)                      /* Reading word  */
+                        r9 = inw(0xCFC + ((REG_OFFSET(in1) & 2)));
+                else                                    /* Reading dword */
+                        r9 = inl(0xCFC);
+                status = PCIBIOS_SUCCESSFUL;
+	} else if (index == SAL_PCI_CONFIG_WRITE) {
+	      	/*
+		 * in1 contains the PCI configuration address, in2 the
+		 * size of the write, and in3 the actual value to be
+		 * written out.
+		 */
+                outl(BUILD_CMD(in1), 0xCF8);
+                if (in2 == 1)                           /* Writing byte  */
+                        outb(in3, 0xCFC + ((REG_OFFSET(in1) & 3)));
+                else if (in2 == 2)                      /* Writing word  */
+                        outw(in3, 0xCFC + ((REG_OFFSET(in1) & 2)));
+                else                                    /* Writing dword */
+                        outl(in3, 0xCFC);
+                status = PCIBIOS_SUCCESSFUL;
+#endif /* CONFIG_PCI */
+	} else if (index == SAL_UPDATE_PAL) {
+		;
+	} else {
+		status = -1;
+	}
+	return ((struct sal_ret_values) {status, r9, r10, r11});
+}
+
+
+/*
+ * This is here to work around a bug in egcs-1.1.1b that causes the
+ * compiler to crash (seems like a bug in the new alias analysis code.
+ */
+void *
+id (long addr)
+{
+	return (void *) addr;
+}
+
+struct ia64_boot_param *
+sys_fw_init (const char *args, int arglen)
+{
+	efi_system_table_t *efi_systab;
+	efi_runtime_services_t *efi_runtime;
+	efi_config_table_t *efi_tables;
+	struct ia64_sal_systab *sal_systab;
+	efi_memory_desc_t *efi_memmap, *md;
+	unsigned long *pal_desc, *sal_desc;
+	struct ia64_sal_desc_entry_point *sal_ed;
+	struct ia64_boot_param *bp;
+	unsigned char checksum = 0;
+	char *cp, *cmd_line;
+	int i = 0;
+#	define MAKE_MD(typ, attr, start, end)		\
+	do {						\
+		md = efi_memmap + i++;			\
+		md->type = typ;				\
+		md->pad = 0;				\
+		md->phys_addr = start;			\
+		md->virt_addr = 0;			\
+		md->num_pages = (end - start) >> 12;	\
+		md->attribute = attr;			\
+	} while (0)
+
+	memset(fw_mem, 0, sizeof(fw_mem));
+
+	pal_desc = (unsigned long *) &pal_emulator_static;
+	sal_desc = (unsigned long *) &sal_emulator;
+
+	cp = fw_mem;
+	efi_systab  = (void *) cp; cp += sizeof(*efi_systab);
+	efi_runtime = (void *) cp; cp += sizeof(*efi_runtime);
+	efi_tables  = (void *) cp; cp += sizeof(*efi_tables);
+	sal_systab  = (void *) cp; cp += sizeof(*sal_systab);
+	sal_ed      = (void *) cp; cp += sizeof(*sal_ed);
+	efi_memmap  = (void *) cp; cp += NUM_MEM_DESCS*sizeof(*efi_memmap);
+	bp	    = (void *) cp; cp += sizeof(*bp);
+	cmd_line    = (void *) cp;
+
+	if (args) {
+		if (arglen >= 1024)
+			arglen = 1023;
+		memcpy(cmd_line, args, arglen);
+	} else {
+		arglen = 0;
+	}
+	cmd_line[arglen] = '\0';
+
+	memset(efi_systab, 0, sizeof(efi_systab));
+	efi_systab->hdr.signature = EFI_SYSTEM_TABLE_SIGNATURE;
+	efi_systab->hdr.revision  = EFI_SYSTEM_TABLE_REVISION;
+	efi_systab->hdr.headersize = sizeof(efi_systab->hdr);
+	efi_systab->fw_vendor = __pa("H\0e\0w\0l\0e\0t\0t\0-\0P\0a\0c\0k\0a\0r\0d\0\0");
+	efi_systab->fw_revision = 1;
+	efi_systab->runtime = (void *) __pa(efi_runtime);
+	efi_systab->nr_tables = 1;
+	efi_systab->tables = __pa(efi_tables);
+
+	efi_runtime->hdr.signature = EFI_RUNTIME_SERVICES_SIGNATURE;
+	efi_runtime->hdr.revision = EFI_RUNTIME_SERVICES_REVISION;
+	efi_runtime->hdr.headersize = sizeof(efi_runtime->hdr);
+	efi_runtime->get_time = __pa(&fw_efi_get_time);
+	efi_runtime->set_time = __pa(&efi_unimplemented);
+	efi_runtime->get_wakeup_time = __pa(&efi_unimplemented);
+	efi_runtime->set_wakeup_time = __pa(&efi_unimplemented);
+	efi_runtime->set_virtual_address_map = __pa(&efi_unimplemented);
+	efi_runtime->get_variable = __pa(&efi_unimplemented);
+	efi_runtime->get_next_variable = __pa(&efi_unimplemented);
+	efi_runtime->set_variable = __pa(&efi_unimplemented);
+	efi_runtime->get_next_high_mono_count = __pa(&efi_unimplemented);
+	efi_runtime->reset_system = __pa(&efi_reset_system);
+
+	efi_tables->guid = SAL_SYSTEM_TABLE_GUID;
+	efi_tables->table = __pa(sal_systab);
+
+	/* fill in the SAL system table: */
+	memcpy(sal_systab->signature, "SST_", 4);
+	sal_systab->size = sizeof(*sal_systab);
+	sal_systab->sal_rev_minor = 1;
+	sal_systab->sal_rev_major = 0;
+	sal_systab->entry_count = 1;
+
+#ifdef CONFIG_IA64_GENERIC
+        strcpy(sal_systab->oem_id, "Generic");
+        strcpy(sal_systab->product_id, "IA-64 system");
+#endif
+
+#ifdef CONFIG_IA64_HP_SIM
+	strcpy(sal_systab->oem_id, "Hewlett-Packard");
+	strcpy(sal_systab->product_id, "HP-simulator");
+#endif
+
+#ifdef CONFIG_IA64_SDV
+	strcpy(sal_systab->oem_id, "Intel");
+	strcpy(sal_systab->product_id, "SDV");
+#endif
+
+	/* fill in an entry point: */
+	sal_ed->type = SAL_DESC_ENTRY_POINT;
+	sal_ed->pal_proc = __pa(pal_desc[0]);
+	sal_ed->sal_proc = __pa(sal_desc[0]);
+	sal_ed->gp = __pa(sal_desc[1]);
+
+	for (cp = (char *) sal_systab; cp < (char *) efi_memmap; ++cp)
+		checksum += *cp;
+
+	sal_systab->checksum = -checksum;
+
+#if SIMPLE_MEMMAP
+	/* simulate free memory at physical address zero */
+	MAKE_MD(EFI_BOOT_SERVICES_DATA,		EFI_MEMORY_WB,    0*MB,    1*MB);
+	MAKE_MD(EFI_PAL_CODE,			EFI_MEMORY_WB,    1*MB,    2*MB);
+	MAKE_MD(EFI_CONVENTIONAL_MEMORY,	EFI_MEMORY_WB,    2*MB,  130*MB);
+	MAKE_MD(EFI_CONVENTIONAL_MEMORY,	EFI_MEMORY_WB, 4096*MB, 4128*MB);
+#else
+	MAKE_MD( 4,		   0x9, 0x0000000000000000, 0x0000000000001000);
+	MAKE_MD( 7,		   0x9, 0x0000000000001000, 0x000000000008a000);
+	MAKE_MD( 4,		   0x9, 0x000000000008a000, 0x00000000000a0000);
+	MAKE_MD( 5, 0x8000000000000009, 0x00000000000c0000, 0x0000000000100000);
+	MAKE_MD( 7,		   0x9, 0x0000000000100000, 0x0000000004400000);
+	MAKE_MD( 2,		   0x9, 0x0000000004400000, 0x0000000004be5000);
+	MAKE_MD( 7,		   0x9, 0x0000000004be5000, 0x000000007f77e000);
+	MAKE_MD( 6, 0x8000000000000009, 0x000000007f77e000, 0x000000007fb94000);
+	MAKE_MD( 6, 0x8000000000000009, 0x000000007fb94000, 0x000000007fb95000);
+	MAKE_MD( 6, 0x8000000000000009, 0x000000007fb95000, 0x000000007fc00000);
+	MAKE_MD(13, 0x8000000000000009, 0x000000007fc00000, 0x000000007fc3a000);
+	MAKE_MD( 7,		   0x9, 0x000000007fc3a000, 0x000000007fea0000);
+	MAKE_MD( 5, 0x8000000000000009, 0x000000007fea0000, 0x000000007fea8000);
+	MAKE_MD( 7,		   0x9, 0x000000007fea8000, 0x000000007feab000);
+	MAKE_MD( 5, 0x8000000000000009, 0x000000007feab000, 0x000000007ffff000);
+	MAKE_MD( 7,		   0x9, 0x00000000ff400000, 0x0000000104000000);
+#endif
+
+	bp->efi_systab = __pa(&fw_mem);
+	bp->efi_memmap = __pa(efi_memmap);
+	bp->efi_memmap_size = NUM_MEM_DESCS*sizeof(efi_memory_desc_t);
+	bp->efi_memdesc_size = sizeof(efi_memory_desc_t);
+	bp->efi_memdesc_version = 1;
+	bp->command_line = __pa(cmd_line);
+	bp->console_info.num_cols = 80;
+	bp->console_info.num_rows = 25;
+	bp->console_info.orig_x = 0;
+	bp->console_info.orig_y = 24;
+	bp->fpswa = 0;
+
+	return bp;
+}

arch/ia64/hp/sim/boot/ssc.h

@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 1998-2003 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
+ *	Stephane Eranian <eranian@hpl.hp.com>
+ */
+#ifndef ssc_h
+#define ssc_h
+
+/* Simulator system calls: */
+
+#define SSC_CONSOLE_INIT		20
+#define SSC_GETCHAR			21
+#define SSC_PUTCHAR			31
+#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_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_GET_ARGS			75
+
+/*
+ * Simulator system call.
+ */
+extern long ssc (long arg0, long arg1, long arg2, long arg3, int nr);
+
+#endif /* ssc_h */

arch/ia64/hp/sim/hpsim.S

@@ -0,0 +1,10 @@
+#include <asm/asmmacro.h>
+
+/*
+ * Simulator system call.
+ */
+GLOBAL_ENTRY(ia64_ssc)
+	mov r15=r36
+	break 0x80001
+	br.ret.sptk.many rp
+END(ia64_ssc)

arch/ia64/hp/sim/hpsim_console.c

@@ -0,0 +1,65 @@
+/*
+ * Platform dependent support for HP simulator.
+ *
+ * Copyright (C) 1998, 1999, 2002 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 1999 Vijay Chander <vijay@engr.sgi.com>
+ */
+#include <linux/config.h>
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/tty.h>
+#include <linux/kdev_t.h>
+#include <linux/console.h>
+
+#include <asm/delay.h>
+#include <asm/irq.h>
+#include <asm/pal.h>
+#include <asm/machvec.h>
+#include <asm/pgtable.h>
+#include <asm/sal.h>
+
+#include "hpsim_ssc.h"
+
+static int simcons_init (struct console *, char *);
+static void simcons_write (struct console *, const char *, unsigned);
+static struct tty_driver *simcons_console_device (struct console *, int *);
+
+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 struct tty_driver *simcons_console_device (struct console *c, int *index)
+{
+	extern struct tty_driver *hp_simserial_driver;
+	*index = c->index;
+	return hp_simserial_driver;
+}

arch/ia64/hp/sim/hpsim_irq.c

@@ -0,0 +1,51 @@
+/*
+ * Platform dependent support for HP simulator.
+ *
+ * Copyright (C) 1998-2001 Hewlett-Packard Co
+ * Copyright (C) 1998-2001 David Mosberger-Tang <davidm@hpl.hp.com>
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/irq.h>
+
+static unsigned int
+hpsim_irq_startup (unsigned int irq)
+{
+	return 0;
+}
+
+static void
+hpsim_irq_noop (unsigned int irq)
+{
+}
+
+static void
+hpsim_set_affinity_noop (unsigned int a, cpumask_t b)
+{
+}
+
+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 =	hpsim_set_affinity_noop,
+};
+
+void __init
+hpsim_irq_init (void)
+{
+	irq_desc_t *idesc;
+	int i;
+
+	for (i = 0; i < NR_IRQS; ++i) {
+		idesc = irq_descp(i);
+		if (idesc->handler == &no_irq_type)
+			idesc->handler = &irq_type_hp_sim;
+	}
+}

arch/ia64/hp/sim/hpsim_machvec.c

@@ -0,0 +1,3 @@
+#define MACHVEC_PLATFORM_NAME		hpsim
+#define MACHVEC_PLATFORM_HEADER		<asm/machvec_hpsim.h>
+#include <asm/machvec_init.h>

arch/ia64/hp/sim/hpsim_setup.c

@@ -0,0 +1,52 @@
+/*
+ * Platform dependent support for HP simulator.
+ *
+ * Copyright (C) 1998, 1999, 2002 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 1999 Vijay Chander <vijay@engr.sgi.com>
+ */
+#include <linux/config.h>
+#include <linux/console.h>
+#include <linux/init.h>
+#include <linux/kdev_t.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/param.h>
+#include <linux/root_dev.h>
+#include <linux/string.h>
+#include <linux/types.h>
+
+#include <asm/delay.h>
+#include <asm/irq.h>
+#include <asm/pal.h>
+#include <asm/machvec.h>
+#include <asm/pgtable.h>
+#include <asm/sal.h>
+
+#include "hpsim_ssc.h"
+
+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 = Root_SDA1;		/* default to first SCSI drive */
+
+#ifdef CONFIG_HP_SIMSERIAL_CONSOLE
+	{
+		extern struct console hpsim_cons;
+		if (ia64_platform_is("hpsim"))
+			register_console(&hpsim_cons);
+	}
+#endif
+}

arch/ia64/hp/sim/hpsim_ssc.h

@@ -0,0 +1,36 @@
+/*
+ * Platform dependent support for HP simulator.
+ *
+ * Copyright (C) 1998, 1999 Hewlett-Packard Co
+ * Copyright (C) 1998, 1999 David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 1999 Vijay Chander <vijay@engr.sgi.com>
+ */
+#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 */

arch/ia64/hp/sim/simeth.c

@@ -0,0 +1,530 @@
+/*
+ * Simulated Ethernet Driver
+ *
+ * Copyright (C) 1999-2001, 2003 Hewlett-Packard Co
+ *	Stephane Eranian <eranian@hpl.hp.com>
+ */
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/in.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/inetdevice.h>
+#include <linux/if_ether.h>
+#include <linux/if_arp.h>
+#include <linux/skbuff.h>
+#include <linux/notifier.h>
+#include <linux/bitops.h>
+#include <asm/system.h>
+#include <asm/irq.h>
+
+#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 irqreturn_t 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(KERN_INFO "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 interrupting) */
+	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, err;
+
+	/*
+	 * 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 = alloc_etherdev(sizeof(struct simeth_local));
+	if (!dev)
+		return -ENOMEM;
+
+	memcpy(dev->dev_addr, mac_addr, sizeof(mac_addr));
+
+	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 */
+
+	err = register_netdev(dev);
+	if (err) {
+		free_netdev(dev);
+		return err;
+	}
+
+	dev->irq = assign_irq_vector(AUTO_ASSIGN);
+
+	/*
+	 * attach the interrupt in the simulator, this does enable interrupts
+	 * until a netdev_attach() is called
+	 */
+	netdev_connect(dev->irq);
+
+	printk(KERN_INFO "%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(KERN_WARNING "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 = 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(KERN_ERR "simeth_open: can't find device %s's ifa\n", dev->name);
+		return NOTIFY_DONE;
+	}
+
+	printk(KERN_INFO "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(KERN_INFO "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 = 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 = 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 irqreturn_t
+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 IRQ_NONE;
+	}
+
+	/*
+	 * very simple loop because we get interrupts only when receiving
+	 */
+	while (simeth_rx(dev));
+	return IRQ_HANDLED;
+}
+
+static struct net_device_stats *
+simeth_get_stats(struct net_device *dev)
+{
+	struct simeth_local *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);
+}
+
+__initcall(simeth_probe);

arch/ia64/hp/sim/simscsi.c

@@ -0,0 +1,404 @@
+/*
+ * Simulated SCSI driver.
+ *
+ * Copyright (C) 1999, 2001-2003 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
+ *	Stephane Eranian <eranian@hpl.hp.com>
+ *
+ * 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 <linux/blkdev.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/timer.h>
+#include <asm/irq.h>
+
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_host.h>
+
+#define DEBUG_SIMSCSI	0
+
+#define SIMSCSI_REQ_QUEUE_LEN	64
+#define DEFAULT_SIMSCSI_ROOT	"/var/ski-disks/sd"
+
+/* 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);
+static 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[16] = {
+	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
+};
+
+static struct queue_entry {
+	struct 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(KERN_ERR "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)
+{
+	struct 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;
+	}
+}
+
+static int
+simscsi_biosparam (struct scsi_device *sdev, struct block_device *n,
+		sector_t capacity, int ip[])
+{
+	ip[0] = 64;		/* heads */
+	ip[1] = 32;		/* sectors */
+	ip[2] = capacity >> 11;	/* cylinders */
+	return 0;
+}
+
+static void
+simscsi_readwrite (struct 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->device->id];
+	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 (struct 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->device->id];
+
+	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 (struct 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 size_t
+simscsi_get_disk_size (int fd)
+{
+	struct disk_stat stat;
+	size_t bit, sectors = 0;
+	struct disk_req req;
+	char buf[512];
+
+	/*
+	 * This is a bit kludgey: the simulator doesn't provide a direct way of determining
+	 * the disk size, so we do a binary search, assuming a maximum disk size of 4GB.
+	 */
+	for (bit = (4UL << 30)/512; bit != 0; bit >>= 1) {
+		req.addr = __pa(&buf);
+		req.len = sizeof(buf);
+		ia64_ssc(fd, 1, __pa(&req), ((sectors | bit) - 1)*512, SSC_READ);
+		stat.fd = fd;
+		ia64_ssc(__pa(&stat), 0, 0, 0, SSC_WAIT_COMPLETION);
+		if (stat.count == sizeof(buf))
+			sectors |= bit;
+	}
+	return sectors - 1;	/* return last valid sector number */
+}
+
+static void
+simscsi_readwrite10 (struct 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);
+}
+
+static int
+simscsi_queuecommand (struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *))
+{
+	unsigned int target_id = sc->device->id;
+	char fname[MAX_ROOT_LEN+16];
+	size_t disk_size;
+	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",
+		       target_id, sc->cmnd[0], sc->serial_number, sp, done);
+#endif
+
+	sc->result = DID_BAD_TARGET << 16;
+	sc->scsi_done = done;
+	if (target_id <= 15 && sc->device->lun == 0) {
+		switch (sc->cmnd[0]) {
+		      case INQUIRY:
+			if (sc->request_bufflen < 35) {
+				break;
+			}
+			sprintf (fname, "%s%c", simscsi_root, 'a' + target_id);
+			desc[target_id] = ia64_ssc(__pa(fname), SSC_READ_ACCESS|SSC_WRITE_ACCESS,
+						   0, 0, SSC_OPEN);
+			if (desc[target_id] < 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[target_id] < 0 )
+				break;
+			simscsi_readwrite6(sc, SSC_READ);
+			break;
+
+		      case READ_10:
+			if (desc[target_id] < 0 )
+				break;
+			simscsi_readwrite10(sc, SSC_READ);
+			break;
+
+		      case WRITE_6:
+			if (desc[target_id] < 0)
+				break;
+			simscsi_readwrite6(sc, SSC_WRITE);
+			break;
+
+		      case WRITE_10:
+			if (desc[target_id] < 0)
+				break;
+			simscsi_readwrite10(sc, SSC_WRITE);
+			break;
+
+
+		      case READ_CAPACITY:
+			if (desc[target_id] < 0 || sc->request_bufflen < 8) {
+				break;
+			}
+			buf = sc->request_buffer;
+
+			disk_size = simscsi_get_disk_size(desc[target_id]);
+
+			/* pretend to be a 1GB disk (partition table contains real stuff): */
+			buf[0] = (disk_size >> 24) & 0xff;
+			buf[1] = (disk_size >> 16) & 0xff;
+			buf[2] = (disk_size >>  8) & 0xff;
+			buf[3] = (disk_size >>  0) & 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:
+		      case MODE_SENSE_10:
+			/* sd.c uses this to determine whether disk does write-caching. */
+			memset(sc->request_buffer, 0, 128);
+			sc->result = GOOD;
+			break;
+
+		      case START_STOP:
+			printk(KERN_ERR "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 int
+simscsi_host_reset (struct scsi_cmnd *sc)
+{
+	printk(KERN_ERR "simscsi_host_reset: not implemented\n");
+	return 0;
+}
+
+static struct scsi_host_template driver_template = {
+	.name			= "simulated SCSI host adapter",
+	.proc_name		= "simscsi",
+	.queuecommand		= simscsi_queuecommand,
+	.eh_host_reset_handler	= simscsi_host_reset,
+	.bios_param		= simscsi_biosparam,
+	.can_queue		= SIMSCSI_REQ_QUEUE_LEN,
+	.this_id		= -1,
+	.sg_tablesize		= SG_ALL,
+	.max_sectors		= 1024,
+	.cmd_per_lun		= SIMSCSI_REQ_QUEUE_LEN,
+	.use_clustering		= DISABLE_CLUSTERING,
+};
+
+static int __init
+simscsi_init(void)
+{
+	int error;
+
+	host = scsi_host_alloc(&driver_template, 0);
+	if (!host)
+		return -ENOMEM;
+
+	error = scsi_add_host(host, NULL);
+	if (!error)
+		scsi_scan_host(host);
+	return error;
+}
+
+static void __exit
+simscsi_exit(void)
+{
+	scsi_remove_host(host);
+	scsi_host_put(host);
+}
+
+module_init(simscsi_init);
+module_exit(simscsi_exit);

arch/ia64/hp/zx1/Makefile

@@ -0,0 +1,8 @@
+#
+# ia64/hp/zx1/Makefile
+#
+# Copyright (C) 2002 Hewlett Packard
+# Copyright (C) Alex Williamson (alex_williamson@hp.com)
+#
+
+obj-$(CONFIG_IA64_GENERIC) += hpzx1_machvec.o hpzx1_swiotlb_machvec.o

arch/ia64/hp/zx1/hpzx1_machvec.c

@@ -0,0 +1,3 @@
+#define MACHVEC_PLATFORM_NAME		hpzx1
+#define MACHVEC_PLATFORM_HEADER		<asm/machvec_hpzx1.h>
+#include <asm/machvec_init.h>

arch/ia64/hp/zx1/hpzx1_swiotlb_machvec.c

@@ -0,0 +1,3 @@
+#define MACHVEC_PLATFORM_NAME		hpzx1_swiotlb
+#define MACHVEC_PLATFORM_HEADER		<asm/machvec_hpzx1_swiotlb.h>
+#include <asm/machvec_init.h>