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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/ia64/hp/sim
downloadlinux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz
Linux-2.6.12-rc2v2.6.12-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!
Diffstat (limited to 'arch/ia64/hp/sim')
-rw-r--r--arch/ia64/hp/sim/Kconfig20
-rw-r--r--arch/ia64/hp/sim/Makefile16
-rw-r--r--arch/ia64/hp/sim/boot/Makefile37
-rw-r--r--arch/ia64/hp/sim/boot/boot_head.S144
-rw-r--r--arch/ia64/hp/sim/boot/bootloader.c176
-rw-r--r--arch/ia64/hp/sim/boot/bootloader.lds65
-rw-r--r--arch/ia64/hp/sim/boot/fw-emu.c398
-rw-r--r--arch/ia64/hp/sim/boot/ssc.h35
-rw-r--r--arch/ia64/hp/sim/hpsim.S10
-rw-r--r--arch/ia64/hp/sim/hpsim_console.c65
-rw-r--r--arch/ia64/hp/sim/hpsim_irq.c51
-rw-r--r--arch/ia64/hp/sim/hpsim_machvec.c3
-rw-r--r--arch/ia64/hp/sim/hpsim_setup.c52
-rw-r--r--arch/ia64/hp/sim/hpsim_ssc.h36
-rw-r--r--arch/ia64/hp/sim/simeth.c530
-rw-r--r--arch/ia64/hp/sim/simscsi.c404
-rw-r--r--arch/ia64/hp/sim/simserial.c1032
17 files changed, 3074 insertions, 0 deletions
diff --git a/arch/ia64/hp/sim/Kconfig b/arch/ia64/hp/sim/Kconfig
new file mode 100644
index 000000000000..18ccb1266e18
--- /dev/null
+++ b/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
+
diff --git a/arch/ia64/hp/sim/Makefile b/arch/ia64/hp/sim/Makefile
new file mode 100644
index 000000000000..d10da47931d7
--- /dev/null
+++ b/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-$(CONFIG_HP_SIMSCSI) += simscsi.o
diff --git a/arch/ia64/hp/sim/boot/Makefile b/arch/ia64/hp/sim/boot/Makefile
new file mode 100644
index 000000000000..df6e9968c845
--- /dev/null
+++ b/arch/ia64/hp/sim/boot/Makefile
@@ -0,0 +1,37 @@
+#
+# ia64/boot/Makefile
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License. See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+# Copyright (C) 1998, 2003 by David Mosberger-Tang <davidm@hpl.hp.com>
+#
+
+targets-$(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)
diff --git a/arch/ia64/hp/sim/boot/boot_head.S b/arch/ia64/hp/sim/boot/boot_head.S
new file mode 100644
index 000000000000..9364199e5632
--- /dev/null
+++ b/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)
diff --git a/arch/ia64/hp/sim/boot/bootloader.c b/arch/ia64/hp/sim/boot/bootloader.c
new file mode 100644
index 000000000000..51a7b7b4dd0e
--- /dev/null
+++ b/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);
+}
diff --git a/arch/ia64/hp/sim/boot/bootloader.lds b/arch/ia64/hp/sim/boot/bootloader.lds
new file mode 100644
index 000000000000..69ae58531033
--- /dev/null
+++ b/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 . */
+}
diff --git a/arch/ia64/hp/sim/boot/fw-emu.c b/arch/ia64/hp/sim/boot/fw-emu.c
new file mode 100644
index 000000000000..5c46928e3dc6
--- /dev/null
+++ b/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;
+}
diff --git a/arch/ia64/hp/sim/boot/ssc.h b/arch/ia64/hp/sim/boot/ssc.h
new file mode 100644
index 000000000000..3b94c03e43a9
--- /dev/null
+++ b/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 */
diff --git a/arch/ia64/hp/sim/hpsim.S b/arch/ia64/hp/sim/hpsim.S
new file mode 100644
index 000000000000..ff16e8a857d1
--- /dev/null
+++ b/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)
diff --git a/arch/ia64/hp/sim/hpsim_console.c b/arch/ia64/hp/sim/hpsim_console.c
new file mode 100644
index 000000000000..5deff21e5877
--- /dev/null
+++ b/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;
+}
diff --git a/arch/ia64/hp/sim/hpsim_irq.c b/arch/ia64/hp/sim/hpsim_irq.c
new file mode 100644
index 000000000000..c0d25a2a3e9c
--- /dev/null
+++ b/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;
+ }
+}
diff --git a/arch/ia64/hp/sim/hpsim_machvec.c b/arch/ia64/hp/sim/hpsim_machvec.c
new file mode 100644
index 000000000000..c21419359185
--- /dev/null
+++ b/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>
diff --git a/arch/ia64/hp/sim/hpsim_setup.c b/arch/ia64/hp/sim/hpsim_setup.c
new file mode 100644
index 000000000000..694fc86bfbd5
--- /dev/null
+++ b/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
+}
diff --git a/arch/ia64/hp/sim/hpsim_ssc.h b/arch/ia64/hp/sim/hpsim_ssc.h
new file mode 100644
index 000000000000..bfa3906274b3
--- /dev/null
+++ b/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 */
diff --git a/arch/ia64/hp/sim/simeth.c b/arch/ia64/hp/sim/simeth.c
new file mode 100644
index 000000000000..ae84a1018a89
--- /dev/null
+++ b/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);
diff --git a/arch/ia64/hp/sim/simscsi.c b/arch/ia64/hp/sim/simscsi.c
new file mode 100644
index 000000000000..56405dbfd739
--- /dev/null
+++ b/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);
diff --git a/arch/ia64/hp/sim/simserial.c b/arch/ia64/hp/sim/simserial.c
new file mode 100644
index 000000000000..786e70718ce4
--- /dev/null
+++ b/arch/ia64/hp/sim/simserial.c
@@ -0,0 +1,1032 @@
+/*
+ * 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, 2002-2003 Hewlett-Packard Co
+ * Stephane Eranian <eranian@hpl.hp.com>
+ * David Mosberger-Tang <davidm@hpl.hp.com>
+ *
+ * 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.
+ * 07/30/02 D. Mosberger Replace sti()/cli() with explicit spinlocks & local irq masking
+ */
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/major.h>
+#include <linux/fcntl.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/console.h>
+#include <linux/module.h>
+#include <linux/serial.h>
+#include <linux/serialP.h>
+
+#include <asm/irq.h>
+#include <asm/hw_irq.h>
+#include <asm/uaccess.h>
+
+#ifdef CONFIG_KDB
+# include <linux/kdb.h>
+#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
+
+#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}
+};
+
+struct tty_driver *hp_simserial_driver;
+
+static struct async_struct *IRQ_ports[NR_IRQS];
+
+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 */
+#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 irqreturn_t 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(KERN_INFO "simrs_interrupt_single: info|tty=0 info=%p problem\n", info);
+ return IRQ_NONE;
+ }
+ /*
+ * pretty simple in our case, because we only get interrupts
+ * on inbound traffic
+ */
+ receive_chars(info->tty, regs);
+ return IRQ_HANDLED;
+}
+
+/*
+ * -------------------------------------------------------------------
+ * 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(KERN_ERR "do_serial_bh: called\n");
+}
+#endif
+
+static void do_softint(void *private_)
+{
+ printk(KERN_ERR "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;
+
+ local_irq_save(flags);
+ if (CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE) == 0) {
+ local_irq_restore(flags);
+ return;
+ }
+ info->xmit.buf[info->xmit.head] = ch;
+ info->xmit.head = (info->xmit.head + 1) & (SERIAL_XMIT_SIZE-1);
+ local_irq_restore(flags);
+}
+
+static _INLINE_ void transmit_chars(struct async_struct *info, int *intr_done)
+{
+ int count;
+ unsigned long flags;
+
+
+ local_irq_save(flags);
+
+ 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:
+ local_irq_restore(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,
+ 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;
+
+ local_irq_save(flags);
+ 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;
+ }
+ local_irq_restore(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;
+
+ local_irq_save(flags);
+ info->xmit.head = info->xmit.tail = 0;
+ local_irq_restore(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(KERN_INFO "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(KERN_INFO "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(KERN_INFO "rs_ioctl: TIOCMGET called\n");
+ return -EINVAL;
+ case TIOCMBIS:
+ case TIOCMBIC:
+ case TIOCMSET:
+ printk(KERN_INFO "rs_ioctl: TIOCMBIS/BIC/SET called\n");
+ return -EINVAL;
+ case TIOCGSERIAL:
+ printk(KERN_INFO "simrs_ioctl TIOCGSERIAL called\n");
+ return 0;
+ case TIOCSSERIAL:
+ printk(KERN_INFO "simrs_ioctl TIOCSSERIAL called\n");
+ return 0;
+ case TIOCSERCONFIG:
+ printk(KERN_INFO "rs_ioctl: TIOCSERCONFIG called\n");
+ return -EINVAL;
+
+ case TIOCSERGETLSR: /* Get line status register */
+ printk(KERN_INFO "rs_ioctl: TIOCSERGETLSR called\n");
+ return -EINVAL;
+
+ case TIOCSERGSTRUCT:
+ printk(KERN_INFO "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(KERN_INFO "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(KERN_INFO "rs_ioctl: TIOCGICOUNT called\n");
+ return 0;
+
+ case TIOCSERGWILD:
+ case TIOCSERSWILD:
+ /* "setserial -W" is called in Debian boot */
+ printk (KERN_INFO "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
+
+ local_irq_save(flags);
+ {
+ /*
+ * 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(KERN_ERR "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;
+ }
+ local_irq_restore(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;
+
+ local_irq_save(flags);
+ if (tty_hung_up_p(filp)) {
+#ifdef SIMSERIAL_DEBUG
+ printk("rs_close: hung_up\n");
+#endif
+ local_irq_restore(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(KERN_ERR "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(KERN_ERR "rs_close: bad serial port count for ttys%d: %d\n",
+ info->line, state->count);
+ state->count = 0;
+ }
+ if (state->count) {
+ local_irq_restore(flags);
+ return;
+ }
+ info->flags |= ASYNC_CLOSING;
+ local_irq_restore(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_CLOSING);
+ wake_up_interruptible(&info->close_wait);
+}
+
+/*
+ * 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;
+ 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;
+ INIT_WORK(&info->work, do_softint, 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;
+ irqreturn_t (*handler)(int, void *, struct pt_regs *);
+ struct serial_state *state= info->state;
+ unsigned long page;
+
+ page = get_zeroed_page(GFP_KERNEL);
+ if (!page)
+ return -ENOMEM;
+
+ local_irq_save(flags);
+
+ 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;
+ local_irq_restore(flags);
+ return 0;
+
+errout:
+ local_irq_restore(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;
+
+ line = tty->index;
+ if ((line < 0) || (line >= NR_PORTS))
+ return -ENODEV;
+ retval = get_async_struct(line, &info);
+ if (retval)
+ return retval;
+ tty->driver_data = info;
+ info->tty = tty;
+
+#ifdef SIMSERIAL_DEBUG
+ printk("rs_open %s, count = %d\n", tty->name, info->state->count);
+#endif
+ info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+
+ if (!tmp_buf) {
+ page = get_zeroed_page(GFP_KERNEL);
+ if (!page)
+ 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);
+#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) {
+ return retval;
+ }
+
+ /*
+ * 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;
+ }
+
+#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(KERN_INFO " no serial options enabled\n");
+}
+
+static struct tty_operations hp_ops = {
+ .open = rs_open,
+ .close = rs_close,
+ .write = rs_write,
+ .put_char = rs_put_char,
+ .flush_chars = rs_flush_chars,
+ .write_room = rs_write_room,
+ .chars_in_buffer = rs_chars_in_buffer,
+ .flush_buffer = rs_flush_buffer,
+ .ioctl = rs_ioctl,
+ .throttle = rs_throttle,
+ .unthrottle = rs_unthrottle,
+ .send_xchar = rs_send_xchar,
+ .set_termios = rs_set_termios,
+ .stop = rs_stop,
+ .start = rs_start,
+ .hangup = rs_hangup,
+ .break_ctl = rs_break,
+ .wait_until_sent = rs_wait_until_sent,
+ .read_proc = rs_read_proc,
+};
+
+/*
+ * The serial driver boot-time initialization code!
+ */
+static int __init
+simrs_init (void)
+{
+ int i;
+ struct serial_state *state;
+
+ if (!ia64_platform_is("hpsim"))
+ return -ENODEV;
+
+ hp_simserial_driver = alloc_tty_driver(1);
+ if (!hp_simserial_driver)
+ return -ENOMEM;
+
+ show_serial_version();
+
+ /* Initialize the tty_driver structure */
+
+ hp_simserial_driver->owner = THIS_MODULE;
+ hp_simserial_driver->driver_name = "simserial";
+ hp_simserial_driver->name = "ttyS";
+ hp_simserial_driver->major = TTY_MAJOR;
+ hp_simserial_driver->minor_start = 64;
+ hp_simserial_driver->type = TTY_DRIVER_TYPE_SERIAL;
+ hp_simserial_driver->subtype = SERIAL_TYPE_NORMAL;
+ hp_simserial_driver->init_termios = tty_std_termios;
+ hp_simserial_driver->init_termios.c_cflag =
+ B9600 | CS8 | CREAD | HUPCL | CLOCAL;
+ hp_simserial_driver->flags = TTY_DRIVER_REAL_RAW;
+ tty_set_operations(hp_simserial_driver, &hp_ops);
+
+ /*
+ * 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 = assign_irq_vector(AUTO_ASSIGN);
+ ia64_ssc_connect_irq(KEYBOARD_INTR, state->irq);
+ }
+
+ printk(KERN_INFO "ttyS%d at 0x%04lx (irq = %d) is a %s\n",
+ state->line,
+ state->port, state->irq,
+ uart_config[state->type].name);
+ }
+
+ if (tty_register_driver(hp_simserial_driver))
+ panic("Couldn't register simserial driver\n");
+
+ return 0;
+}
+
+#ifndef MODULE
+__initcall(simrs_init);
+#endif
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-24 22:38:01 +0300