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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/ia64/hp/sim
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 @@
1
2menu "HP Simulator drivers"
3 depends on IA64_HP_SIM || IA64_GENERIC
4
5config HP_SIMETH
6 bool "Simulated Ethernet "
7
8config HP_SIMSERIAL
9 bool "Simulated serial driver support"
10
11config HP_SIMSERIAL_CONSOLE
12 bool "Console for HP simulator"
13 depends on HP_SIMSERIAL
14
15config HP_SIMSCSI
16 tristate "Simulated SCSI disk"
17 depends on SCSI
18
19endmenu
20
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 @@
1#
2# ia64/platform/hp/sim/Makefile
3#
4# Copyright (C) 2002 Hewlett-Packard Co.
5# David Mosberger-Tang <davidm@hpl.hp.com>
6# Copyright (C) 1999 Silicon Graphics, Inc.
7# Copyright (C) Srinivasa Thirumalachar (sprasad@engr.sgi.com)
8#
9
10obj-y := hpsim_irq.o hpsim_setup.o hpsim.o
11obj-$(CONFIG_IA64_GENERIC) += hpsim_machvec.o
12
13obj-$(CONFIG_HP_SIMETH) += simeth.o
14obj-$(CONFIG_HP_SIMSERIAL) += simserial.o
15obj-$(CONFIG_HP_SIMSERIAL_CONSOLE) += hpsim_console.o
16obj-$(CONFIG_HP_SIMSCSI) += simscsi.o
diff --git a/arch/ia64/hp/sim/boot/Makefile b/arch/ia64/hp/sim/boot/Makefile
new file mode 100644
index 000000000000..df6e9968c845
--- /dev/null
+++ b/arch/ia64/hp/sim/boot/Makefile
@@ -0,0 +1,37 @@
1#
2# ia64/boot/Makefile
3#
4# This file is subject to the terms and conditions of the GNU General Public
5# License. See the file "COPYING" in the main directory of this archive
6# for more details.
7#
8# Copyright (C) 1998, 2003 by David Mosberger-Tang <davidm@hpl.hp.com>
9#
10
11targets-$(CONFIG_IA64_HP_SIM) += bootloader
12targets := vmlinux.bin vmlinux.gz $(targets-y)
13
14quiet_cmd_cptotop = LN $@
15 cmd_cptotop = ln -f $< $@
16
17vmlinux.gz: $(obj)/vmlinux.gz $(addprefix $(obj)/,$(targets-y))
18 $(call cmd,cptotop)
19 @echo ' Kernel: $@ is ready'
20
21boot: bootloader
22
23bootloader: $(obj)/bootloader
24 $(call cmd,cptotop)
25
26$(obj)/vmlinux.gz: $(obj)/vmlinux.bin FORCE
27 $(call if_changed,gzip)
28
29$(obj)/vmlinux.bin: vmlinux FORCE
30 $(call if_changed,objcopy)
31
32
33LDFLAGS_bootloader = -static -T
34
35$(obj)/bootloader: $(src)/bootloader.lds $(obj)/bootloader.o $(obj)/boot_head.o $(obj)/fw-emu.o \
36 lib/lib.a arch/ia64/lib/lib.a FORCE
37 $(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 @@
1/*
2 * Copyright (C) 1998-2003 Hewlett-Packard Co
3 * David Mosberger-Tang <davidm@hpl.hp.com>
4 */
5
6#include <asm/asmmacro.h>
7
8 .bss
9 .align 16
10stack_mem:
11 .skip 16834
12
13 .text
14
15/* This needs to be defined because lib/string.c:strlcat() calls it in case of error... */
16GLOBAL_ENTRY(printk)
17 break 0
18END(printk)
19
20GLOBAL_ENTRY(_start)
21 .prologue
22 .save rp, r0
23 .body
24 movl gp = __gp
25 movl sp = stack_mem
26 bsw.1
27 br.call.sptk.many rp=start_bootloader
28END(_start)
29
30/*
31 * Set a break point on this function so that symbols are available to set breakpoints in
32 * the kernel being debugged.
33 */
34GLOBAL_ENTRY(debug_break)
35 br.ret.sptk.many b0
36END(debug_break)
37
38GLOBAL_ENTRY(ssc)
39 .regstk 5,0,0,0
40 mov r15=in4
41 break 0x80001
42 br.ret.sptk.many b0
43END(ssc)
44
45GLOBAL_ENTRY(jmp_to_kernel)
46 .regstk 2,0,0,0
47 mov r28=in0
48 mov b7=in1
49 br.sptk.few b7
50END(jmp_to_kernel)
51
52
53GLOBAL_ENTRY(pal_emulator_static)
54 mov r8=-1
55 mov r9=256
56 ;;
57 cmp.gtu p6,p7=r9,r28 /* r28 <= 255? */
58(p6) br.cond.sptk.few static
59 ;;
60 mov r9=512
61 ;;
62 cmp.gtu p6,p7=r9,r28
63(p6) br.cond.sptk.few stacked
64 ;;
65static: cmp.eq p6,p7=6,r28 /* PAL_PTCE_INFO */
66(p7) br.cond.sptk.few 1f
67 ;;
68 mov r8=0 /* status = 0 */
69 movl r9=0x100000000 /* tc.base */
70 movl r10=0x0000000200000003 /* count[0], count[1] */
71 movl r11=0x1000000000002000 /* stride[0], stride[1] */
72 br.cond.sptk.few rp
731: cmp.eq p6,p7=14,r28 /* PAL_FREQ_RATIOS */
74(p7) br.cond.sptk.few 1f
75 mov r8=0 /* status = 0 */
76 movl r9 =0x100000064 /* proc_ratio (1/100) */
77 movl r10=0x100000100 /* bus_ratio<<32 (1/256) */
78 movl r11=0x100000064 /* itc_ratio<<32 (1/100) */
79 ;;
801: cmp.eq p6,p7=19,r28 /* PAL_RSE_INFO */
81(p7) br.cond.sptk.few 1f
82 mov r8=0 /* status = 0 */
83 mov r9=96 /* num phys stacked */
84 mov r10=0 /* hints */
85 mov r11=0
86 br.cond.sptk.few rp
871: cmp.eq p6,p7=1,r28 /* PAL_CACHE_FLUSH */
88(p7) br.cond.sptk.few 1f
89 mov r9=ar.lc
90 movl r8=524288 /* flush 512k million cache lines (16MB) */
91 ;;
92 mov ar.lc=r8
93 movl r8=0xe000000000000000
94 ;;
95.loop: fc r8
96 add r8=32,r8
97 br.cloop.sptk.few .loop
98 sync.i
99 ;;
100 srlz.i
101 ;;
102 mov ar.lc=r9
103 mov r8=r0
104 ;;
1051: cmp.eq p6,p7=15,r28 /* PAL_PERF_MON_INFO */
106(p7) br.cond.sptk.few 1f
107 mov r8=0 /* status = 0 */
108 movl r9 =0x08122f04 /* generic=4 width=47 retired=8 cycles=18 */
109 mov r10=0 /* reserved */
110 mov r11=0 /* reserved */
111 mov r16=0xffff /* implemented PMC */
112 mov r17=0x3ffff /* implemented PMD */
113 add r18=8,r29 /* second index */
114 ;;
115 st8 [r29]=r16,16 /* store implemented PMC */
116 st8 [r18]=r0,16 /* clear remaining bits */
117 ;;
118 st8 [r29]=r0,16 /* clear remaining bits */
119 st8 [r18]=r0,16 /* clear remaining bits */
120 ;;
121 st8 [r29]=r17,16 /* store implemented PMD */
122 st8 [r18]=r0,16 /* clear remaining bits */
123 mov r16=0xf0 /* cycles count capable PMC */
124 ;;
125 st8 [r29]=r0,16 /* clear remaining bits */
126 st8 [r18]=r0,16 /* clear remaining bits */
127 mov r17=0xf0 /* retired bundles capable PMC */
128 ;;
129 st8 [r29]=r16,16 /* store cycles capable */
130 st8 [r18]=r0,16 /* clear remaining bits */
131 ;;
132 st8 [r29]=r0,16 /* clear remaining bits */
133 st8 [r18]=r0,16 /* clear remaining bits */
134 ;;
135 st8 [r29]=r17,16 /* store retired bundle capable */
136 st8 [r18]=r0,16 /* clear remaining bits */
137 ;;
138 st8 [r29]=r0,16 /* clear remaining bits */
139 st8 [r18]=r0,16 /* clear remaining bits */
140 ;;
1411: br.cond.sptk.few rp
142stacked:
143 br.ret.sptk.few rp
144END(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 @@
1/*
2 * arch/ia64/hp/sim/boot/bootloader.c
3 *
4 * Loads an ELF kernel.
5 *
6 * Copyright (C) 1998-2003 Hewlett-Packard Co
7 * David Mosberger-Tang <davidm@hpl.hp.com>
8 * Stephane Eranian <eranian@hpl.hp.com>
9 *
10 * 01/07/99 S.Eranian modified to pass command line arguments to kernel
11 */
12struct task_struct; /* forward declaration for elf.h */
13
14#include <linux/config.h>
15#include <linux/elf.h>
16#include <linux/init.h>
17#include <linux/kernel.h>
18
19#include <asm/elf.h>
20#include <asm/intrinsics.h>
21#include <asm/pal.h>
22#include <asm/pgtable.h>
23#include <asm/sal.h>
24#include <asm/system.h>
25
26#include "ssc.h"
27
28struct disk_req {
29 unsigned long addr;
30 unsigned len;
31};
32
33struct disk_stat {
34 int fd;
35 unsigned count;
36};
37
38extern void jmp_to_kernel (unsigned long bp, unsigned long e_entry);
39extern struct ia64_boot_param *sys_fw_init (const char *args, int arglen);
40extern void debug_break (void);
41
42static void
43cons_write (const char *buf)
44{
45 unsigned long ch;
46
47 while ((ch = *buf++) != '\0') {
48 ssc(ch, 0, 0, 0, SSC_PUTCHAR);
49 if (ch == '\n')
50 ssc('\r', 0, 0, 0, SSC_PUTCHAR);
51 }
52}
53
54#define MAX_ARGS 32
55
56void
57start_bootloader (void)
58{
59 static char mem[4096];
60 static char buffer[1024];
61 unsigned long off;
62 int fd, i;
63 struct disk_req req;
64 struct disk_stat stat;
65 struct elfhdr *elf;
66 struct elf_phdr *elf_phdr; /* program header */
67 unsigned long e_entry, e_phoff, e_phnum;
68 register struct ia64_boot_param *bp;
69 char *kpath, *args;
70 long arglen = 0;
71
72 ssc(0, 0, 0, 0, SSC_CONSOLE_INIT);
73
74 /*
75 * S.Eranian: extract the commandline argument from the simulator
76 *
77 * The expected format is as follows:
78 *
79 * kernelname args...
80 *
81 * Both are optional but you can't have the second one without the first.
82 */
83 arglen = ssc((long) buffer, 0, 0, 0, SSC_GET_ARGS);
84
85 kpath = "vmlinux";
86 args = buffer;
87 if (arglen > 0) {
88 kpath = buffer;
89 while (*args != ' ' && *args != '\0')
90 ++args, --arglen;
91 if (*args == ' ')
92 *args++ = '\0', --arglen;
93 }
94
95 if (arglen <= 0) {
96 args = "";
97 arglen = 1;
98 }
99
100 fd = ssc((long) kpath, 1, 0, 0, SSC_OPEN);
101
102 if (fd < 0) {
103 cons_write(kpath);
104 cons_write(": file not found, reboot now\n");
105 for(;;);
106 }
107 stat.fd = fd;
108 off = 0;
109
110 req.len = sizeof(mem);
111 req.addr = (long) mem;
112 ssc(fd, 1, (long) &req, off, SSC_READ);
113 ssc((long) &stat, 0, 0, 0, SSC_WAIT_COMPLETION);
114
115 elf = (struct elfhdr *) mem;
116 if (elf->e_ident[0] == 0x7f && strncmp(elf->e_ident + 1, "ELF", 3) != 0) {
117 cons_write("not an ELF file\n");
118 return;
119 }
120 if (elf->e_type != ET_EXEC) {
121 cons_write("not an ELF executable\n");
122 return;
123 }
124 if (!elf_check_arch(elf)) {
125 cons_write("kernel not for this processor\n");
126 return;
127 }
128
129 e_entry = elf->e_entry;
130 e_phnum = elf->e_phnum;
131 e_phoff = elf->e_phoff;
132
133 cons_write("loading ");
134 cons_write(kpath);
135 cons_write("...\n");
136
137 for (i = 0; i < e_phnum; ++i) {
138 req.len = sizeof(*elf_phdr);
139 req.addr = (long) mem;
140 ssc(fd, 1, (long) &req, e_phoff, SSC_READ);
141 ssc((long) &stat, 0, 0, 0, SSC_WAIT_COMPLETION);
142 if (stat.count != sizeof(*elf_phdr)) {
143 cons_write("failed to read phdr\n");
144 return;
145 }
146 e_phoff += sizeof(*elf_phdr);
147
148 elf_phdr = (struct elf_phdr *) mem;
149
150 if (elf_phdr->p_type != PT_LOAD)
151 continue;
152
153 req.len = elf_phdr->p_filesz;
154 req.addr = __pa(elf_phdr->p_paddr);
155 ssc(fd, 1, (long) &req, elf_phdr->p_offset, SSC_READ);
156 ssc((long) &stat, 0, 0, 0, SSC_WAIT_COMPLETION);
157 memset((char *)__pa(elf_phdr->p_paddr) + elf_phdr->p_filesz, 0,
158 elf_phdr->p_memsz - elf_phdr->p_filesz);
159 }
160 ssc(fd, 0, 0, 0, SSC_CLOSE);
161
162 cons_write("starting kernel...\n");
163
164 /* fake an I/O base address: */
165 ia64_setreg(_IA64_REG_AR_KR0, 0xffffc000000UL);
166
167 bp = sys_fw_init(args, arglen);
168
169 ssc(0, (long) kpath, 0, 0, SSC_LOAD_SYMBOLS);
170
171 debug_break();
172 jmp_to_kernel((unsigned long) bp, e_entry);
173
174 cons_write("kernel returned!\n");
175 ssc(-1, 0, 0, 0, SSC_EXIT);
176}
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 @@
1OUTPUT_FORMAT("elf64-ia64-little")
2OUTPUT_ARCH(ia64)
3ENTRY(_start)
4SECTIONS
5{
6 /* Read-only sections, merged into text segment: */
7 . = 0x100000;
8
9 _text = .;
10 .text : { *(__ivt_section) *(.text) }
11 _etext = .;
12
13 /* Global data */
14 _data = .;
15 .rodata : { *(.rodata) *(.rodata.*) }
16 .data : { *(.data) *(.gnu.linkonce.d*) CONSTRUCTORS }
17 __gp = ALIGN (8) + 0x200000;
18 .got : { *(.got.plt) *(.got) }
19 /* We want the small data sections together, so single-instruction offsets
20 can access them all, and initialized data all before uninitialized, so
21 we can shorten the on-disk segment size. */
22 .sdata : { *(.sdata) }
23 _edata = .;
24
25 _bss = .;
26 .sbss : { *(.sbss) *(.scommon) }
27 .bss : { *(.bss) *(COMMON) }
28 . = ALIGN(64 / 8);
29 _end = . ;
30
31 /* Stabs debugging sections. */
32 .stab 0 : { *(.stab) }
33 .stabstr 0 : { *(.stabstr) }
34 .stab.excl 0 : { *(.stab.excl) }
35 .stab.exclstr 0 : { *(.stab.exclstr) }
36 .stab.index 0 : { *(.stab.index) }
37 .stab.indexstr 0 : { *(.stab.indexstr) }
38 .comment 0 : { *(.comment) }
39 /* DWARF debug sections.
40 Symbols in the DWARF debugging sections are relative to the beginning
41 of the section so we begin them at 0. */
42 /* DWARF 1 */
43 .debug 0 : { *(.debug) }
44 .line 0 : { *(.line) }
45 /* GNU DWARF 1 extensions */
46 .debug_srcinfo 0 : { *(.debug_srcinfo) }
47 .debug_sfnames 0 : { *(.debug_sfnames) }
48 /* DWARF 1.1 and DWARF 2 */
49 .debug_aranges 0 : { *(.debug_aranges) }
50 .debug_pubnames 0 : { *(.debug_pubnames) }
51 /* DWARF 2 */
52 .debug_info 0 : { *(.debug_info) }
53 .debug_abbrev 0 : { *(.debug_abbrev) }
54 .debug_line 0 : { *(.debug_line) }
55 .debug_frame 0 : { *(.debug_frame) }
56 .debug_str 0 : { *(.debug_str) }
57 .debug_loc 0 : { *(.debug_loc) }
58 .debug_macinfo 0 : { *(.debug_macinfo) }
59 /* SGI/MIPS DWARF 2 extensions */
60 .debug_weaknames 0 : { *(.debug_weaknames) }
61 .debug_funcnames 0 : { *(.debug_funcnames) }
62 .debug_typenames 0 : { *(.debug_typenames) }
63 .debug_varnames 0 : { *(.debug_varnames) }
64 /* These must appear regardless of . */
65}
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 @@
1/*
2 * PAL & SAL emulation.
3 *
4 * Copyright (C) 1998-2001 Hewlett-Packard Co
5 * David Mosberger-Tang <davidm@hpl.hp.com>
6 */
7#include <linux/config.h>
8
9#ifdef CONFIG_PCI
10# include <linux/pci.h>
11#endif
12
13#include <linux/efi.h>
14#include <asm/io.h>
15#include <asm/pal.h>
16#include <asm/sal.h>
17
18#include "ssc.h"
19
20#define MB (1024*1024UL)
21
22#define SIMPLE_MEMMAP 1
23
24#if SIMPLE_MEMMAP
25# define NUM_MEM_DESCS 4
26#else
27# define NUM_MEM_DESCS 16
28#endif
29
30static char fw_mem[( sizeof(struct ia64_boot_param)
31 + sizeof(efi_system_table_t)
32 + sizeof(efi_runtime_services_t)
33 + 1*sizeof(efi_config_table_t)
34 + sizeof(struct ia64_sal_systab)
35 + sizeof(struct ia64_sal_desc_entry_point)
36 + NUM_MEM_DESCS*(sizeof(efi_memory_desc_t))
37 + 1024)] __attribute__ ((aligned (8)));
38
39#define SECS_PER_HOUR (60 * 60)
40#define SECS_PER_DAY (SECS_PER_HOUR * 24)
41
42/* Compute the `struct tm' representation of *T,
43 offset OFFSET seconds east of UTC,
44 and store year, yday, mon, mday, wday, hour, min, sec into *TP.
45 Return nonzero if successful. */
46int
47offtime (unsigned long t, efi_time_t *tp)
48{
49 const unsigned short int __mon_yday[2][13] =
50 {
51 /* Normal years. */
52 { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
53 /* Leap years. */
54 { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
55 };
56 long int days, rem, y;
57 const unsigned short int *ip;
58
59 days = t / SECS_PER_DAY;
60 rem = t % SECS_PER_DAY;
61 while (rem < 0) {
62 rem += SECS_PER_DAY;
63 --days;
64 }
65 while (rem >= SECS_PER_DAY) {
66 rem -= SECS_PER_DAY;
67 ++days;
68 }
69 tp->hour = rem / SECS_PER_HOUR;
70 rem %= SECS_PER_HOUR;
71 tp->minute = rem / 60;
72 tp->second = rem % 60;
73 /* January 1, 1970 was a Thursday. */
74 y = 1970;
75
76# define DIV(a, b) ((a) / (b) - ((a) % (b) < 0))
77# define LEAPS_THRU_END_OF(y) (DIV (y, 4) - DIV (y, 100) + DIV (y, 400))
78# define __isleap(year) \
79 ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
80
81 while (days < 0 || days >= (__isleap (y) ? 366 : 365)) {
82 /* Guess a corrected year, assuming 365 days per year. */
83 long int yg = y + days / 365 - (days % 365 < 0);
84
85 /* Adjust DAYS and Y to match the guessed year. */
86 days -= ((yg - y) * 365 + LEAPS_THRU_END_OF (yg - 1)
87 - LEAPS_THRU_END_OF (y - 1));
88 y = yg;
89 }
90 tp->year = y;
91 ip = __mon_yday[__isleap(y)];
92 for (y = 11; days < (long int) ip[y]; --y)
93 continue;
94 days -= ip[y];
95 tp->month = y + 1;
96 tp->day = days + 1;
97 return 1;
98}
99
100extern void pal_emulator_static (void);
101
102/* Macro to emulate SAL call using legacy IN and OUT calls to CF8, CFC etc.. */
103
104#define BUILD_CMD(addr) ((0x80000000 | (addr)) & ~3)
105
106#define REG_OFFSET(addr) (0x00000000000000FF & (addr))
107#define DEVICE_FUNCTION(addr) (0x000000000000FF00 & (addr))
108#define BUS_NUMBER(addr) (0x0000000000FF0000 & (addr))
109
110static efi_status_t
111fw_efi_get_time (efi_time_t *tm, efi_time_cap_t *tc)
112{
113#if defined(CONFIG_IA64_HP_SIM) || defined(CONFIG_IA64_GENERIC)
114 struct {
115 int tv_sec; /* must be 32bits to work */
116 int tv_usec;
117 } tv32bits;
118
119 ssc((unsigned long) &tv32bits, 0, 0, 0, SSC_GET_TOD);
120
121 memset(tm, 0, sizeof(*tm));
122 offtime(tv32bits.tv_sec, tm);
123
124 if (tc)
125 memset(tc, 0, sizeof(*tc));
126#else
127# error Not implemented yet...
128#endif
129 return EFI_SUCCESS;
130}
131
132static void
133efi_reset_system (int reset_type, efi_status_t status, unsigned long data_size, efi_char16_t *data)
134{
135#if defined(CONFIG_IA64_HP_SIM) || defined(CONFIG_IA64_GENERIC)
136 ssc(status, 0, 0, 0, SSC_EXIT);
137#else
138# error Not implemented yet...
139#endif
140}
141
142static efi_status_t
143efi_unimplemented (void)
144{
145 return EFI_UNSUPPORTED;
146}
147
148static struct sal_ret_values
149sal_emulator (long index, unsigned long in1, unsigned long in2,
150 unsigned long in3, unsigned long in4, unsigned long in5,
151 unsigned long in6, unsigned long in7)
152{
153 long r9 = 0;
154 long r10 = 0;
155 long r11 = 0;
156 long status;
157
158 /*
159 * Don't do a "switch" here since that gives us code that
160 * isn't self-relocatable.
161 */
162 status = 0;
163 if (index == SAL_FREQ_BASE) {
164 switch (in1) {
165 case SAL_FREQ_BASE_PLATFORM:
166 r9 = 200000000;
167 break;
168
169 case SAL_FREQ_BASE_INTERVAL_TIMER:
170 /*
171 * Is this supposed to be the cr.itc frequency
172 * or something platform specific? The SAL
173 * doc ain't exactly clear on this...
174 */
175 r9 = 700000000;
176 break;
177
178 case SAL_FREQ_BASE_REALTIME_CLOCK:
179 r9 = 1;
180 break;
181
182 default:
183 status = -1;
184 break;
185 }
186 } else if (index == SAL_SET_VECTORS) {
187 ;
188 } else if (index == SAL_GET_STATE_INFO) {
189 ;
190 } else if (index == SAL_GET_STATE_INFO_SIZE) {
191 ;
192 } else if (index == SAL_CLEAR_STATE_INFO) {
193 ;
194 } else if (index == SAL_MC_RENDEZ) {
195 ;
196 } else if (index == SAL_MC_SET_PARAMS) {
197 ;
198 } else if (index == SAL_CACHE_FLUSH) {
199 ;
200 } else if (index == SAL_CACHE_INIT) {
201 ;
202#ifdef CONFIG_PCI
203 } else if (index == SAL_PCI_CONFIG_READ) {
204 /*
205 * in1 contains the PCI configuration address and in2
206 * the size of the read. The value that is read is
207 * returned via the general register r9.
208 */
209 outl(BUILD_CMD(in1), 0xCF8);
210 if (in2 == 1) /* Reading byte */
211 r9 = inb(0xCFC + ((REG_OFFSET(in1) & 3)));
212 else if (in2 == 2) /* Reading word */
213 r9 = inw(0xCFC + ((REG_OFFSET(in1) & 2)));
214 else /* Reading dword */
215 r9 = inl(0xCFC);
216 status = PCIBIOS_SUCCESSFUL;
217 } else if (index == SAL_PCI_CONFIG_WRITE) {
218 /*
219 * in1 contains the PCI configuration address, in2 the
220 * size of the write, and in3 the actual value to be
221 * written out.
222 */
223 outl(BUILD_CMD(in1), 0xCF8);
224 if (in2 == 1) /* Writing byte */
225 outb(in3, 0xCFC + ((REG_OFFSET(in1) & 3)));
226 else if (in2 == 2) /* Writing word */
227 outw(in3, 0xCFC + ((REG_OFFSET(in1) & 2)));
228 else /* Writing dword */
229 outl(in3, 0xCFC);
230 status = PCIBIOS_SUCCESSFUL;
231#endif /* CONFIG_PCI */
232 } else if (index == SAL_UPDATE_PAL) {
233 ;
234 } else {
235 status = -1;
236 }
237 return ((struct sal_ret_values) {status, r9, r10, r11});
238}
239
240
241/*
242 * This is here to work around a bug in egcs-1.1.1b that causes the
243 * compiler to crash (seems like a bug in the new alias analysis code.
244 */
245void *
246id (long addr)
247{
248 return (void *) addr;
249}
250
251struct ia64_boot_param *
252sys_fw_init (const char *args, int arglen)
253{
254 efi_system_table_t *efi_systab;
255 efi_runtime_services_t *efi_runtime;
256 efi_config_table_t *efi_tables;
257 struct ia64_sal_systab *sal_systab;
258 efi_memory_desc_t *efi_memmap, *md;
259 unsigned long *pal_desc, *sal_desc;
260 struct ia64_sal_desc_entry_point *sal_ed;
261 struct ia64_boot_param *bp;
262 unsigned char checksum = 0;
263 char *cp, *cmd_line;
264 int i = 0;
265# define MAKE_MD(typ, attr, start, end) \
266 do { \
267 md = efi_memmap + i++; \
268 md->type = typ; \
269 md->pad = 0; \
270 md->phys_addr = start; \
271 md->virt_addr = 0; \
272 md->num_pages = (end - start) >> 12; \
273 md->attribute = attr; \
274 } while (0)
275
276 memset(fw_mem, 0, sizeof(fw_mem));
277
278 pal_desc = (unsigned long *) &pal_emulator_static;
279 sal_desc = (unsigned long *) &sal_emulator;
280
281 cp = fw_mem;
282 efi_systab = (void *) cp; cp += sizeof(*efi_systab);
283 efi_runtime = (void *) cp; cp += sizeof(*efi_runtime);
284 efi_tables = (void *) cp; cp += sizeof(*efi_tables);
285 sal_systab = (void *) cp; cp += sizeof(*sal_systab);
286 sal_ed = (void *) cp; cp += sizeof(*sal_ed);
287 efi_memmap = (void *) cp; cp += NUM_MEM_DESCS*sizeof(*efi_memmap);
288 bp = (void *) cp; cp += sizeof(*bp);
289 cmd_line = (void *) cp;
290
291 if (args) {
292 if (arglen >= 1024)
293 arglen = 1023;
294 memcpy(cmd_line, args, arglen);
295 } else {
296 arglen = 0;
297 }
298 cmd_line[arglen] = '\0';
299
300 memset(efi_systab, 0, sizeof(efi_systab));
301 efi_systab->hdr.signature = EFI_SYSTEM_TABLE_SIGNATURE;
302 efi_systab->hdr.revision = EFI_SYSTEM_TABLE_REVISION;
303 efi_systab->hdr.headersize = sizeof(efi_systab->hdr);
304 efi_systab->fw_vendor = __pa("H\0e\0w\0l\0e\0t\0t\0-\0P\0a\0c\0k\0a\0r\0d\0\0");
305 efi_systab->fw_revision = 1;
306 efi_systab->runtime = (void *) __pa(efi_runtime);
307 efi_systab->nr_tables = 1;
308 efi_systab->tables = __pa(efi_tables);
309
310 efi_runtime->hdr.signature = EFI_RUNTIME_SERVICES_SIGNATURE;
311 efi_runtime->hdr.revision = EFI_RUNTIME_SERVICES_REVISION;
312 efi_runtime->hdr.headersize = sizeof(efi_runtime->hdr);
313 efi_runtime->get_time = __pa(&fw_efi_get_time);
314 efi_runtime->set_time = __pa(&efi_unimplemented);
315 efi_runtime->get_wakeup_time = __pa(&efi_unimplemented);
316 efi_runtime->set_wakeup_time = __pa(&efi_unimplemented);
317 efi_runtime->set_virtual_address_map = __pa(&efi_unimplemented);
318 efi_runtime->get_variable = __pa(&efi_unimplemented);
319 efi_runtime->get_next_variable = __pa(&efi_unimplemented);
320 efi_runtime->set_variable = __pa(&efi_unimplemented);
321 efi_runtime->get_next_high_mono_count = __pa(&efi_unimplemented);
322 efi_runtime->reset_system = __pa(&efi_reset_system);
323
324 efi_tables->guid = SAL_SYSTEM_TABLE_GUID;
325 efi_tables->table = __pa(sal_systab);
326
327 /* fill in the SAL system table: */
328 memcpy(sal_systab->signature, "SST_", 4);
329 sal_systab->size = sizeof(*sal_systab);
330 sal_systab->sal_rev_minor = 1;
331 sal_systab->sal_rev_major = 0;
332 sal_systab->entry_count = 1;
333
334#ifdef CONFIG_IA64_GENERIC
335 strcpy(sal_systab->oem_id, "Generic");
336 strcpy(sal_systab->product_id, "IA-64 system");
337#endif
338
339#ifdef CONFIG_IA64_HP_SIM
340 strcpy(sal_systab->oem_id, "Hewlett-Packard");
341 strcpy(sal_systab->product_id, "HP-simulator");
342#endif
343
344#ifdef CONFIG_IA64_SDV
345 strcpy(sal_systab->oem_id, "Intel");
346 strcpy(sal_systab->product_id, "SDV");
347#endif
348
349 /* fill in an entry point: */
350 sal_ed->type = SAL_DESC_ENTRY_POINT;
351 sal_ed->pal_proc = __pa(pal_desc[0]);
352 sal_ed->sal_proc = __pa(sal_desc[0]);
353 sal_ed->gp = __pa(sal_desc[1]);
354
355 for (cp = (char *) sal_systab; cp < (char *) efi_memmap; ++cp)
356 checksum += *cp;
357
358 sal_systab->checksum = -checksum;
359
360#if SIMPLE_MEMMAP
361 /* simulate free memory at physical address zero */
362 MAKE_MD(EFI_BOOT_SERVICES_DATA, EFI_MEMORY_WB, 0*MB, 1*MB);
363 MAKE_MD(EFI_PAL_CODE, EFI_MEMORY_WB, 1*MB, 2*MB);
364 MAKE_MD(EFI_CONVENTIONAL_MEMORY, EFI_MEMORY_WB, 2*MB, 130*MB);
365 MAKE_MD(EFI_CONVENTIONAL_MEMORY, EFI_MEMORY_WB, 4096*MB, 4128*MB);
366#else
367 MAKE_MD( 4, 0x9, 0x0000000000000000, 0x0000000000001000);
368 MAKE_MD( 7, 0x9, 0x0000000000001000, 0x000000000008a000);
369 MAKE_MD( 4, 0x9, 0x000000000008a000, 0x00000000000a0000);
370 MAKE_MD( 5, 0x8000000000000009, 0x00000000000c0000, 0x0000000000100000);
371 MAKE_MD( 7, 0x9, 0x0000000000100000, 0x0000000004400000);
372 MAKE_MD( 2, 0x9, 0x0000000004400000, 0x0000000004be5000);
373 MAKE_MD( 7, 0x9, 0x0000000004be5000, 0x000000007f77e000);
374 MAKE_MD( 6, 0x8000000000000009, 0x000000007f77e000, 0x000000007fb94000);
375 MAKE_MD( 6, 0x8000000000000009, 0x000000007fb94000, 0x000000007fb95000);
376 MAKE_MD( 6, 0x8000000000000009, 0x000000007fb95000, 0x000000007fc00000);
377 MAKE_MD(13, 0x8000000000000009, 0x000000007fc00000, 0x000000007fc3a000);
378 MAKE_MD( 7, 0x9, 0x000000007fc3a000, 0x000000007fea0000);
379 MAKE_MD( 5, 0x8000000000000009, 0x000000007fea0000, 0x000000007fea8000);
380 MAKE_MD( 7, 0x9, 0x000000007fea8000, 0x000000007feab000);
381 MAKE_MD( 5, 0x8000000000000009, 0x000000007feab000, 0x000000007ffff000);
382 MAKE_MD( 7, 0x9, 0x00000000ff400000, 0x0000000104000000);
383#endif
384
385 bp->efi_systab = __pa(&fw_mem);
386 bp->efi_memmap = __pa(efi_memmap);
387 bp->efi_memmap_size = NUM_MEM_DESCS*sizeof(efi_memory_desc_t);
388 bp->efi_memdesc_size = sizeof(efi_memory_desc_t);
389 bp->efi_memdesc_version = 1;
390 bp->command_line = __pa(cmd_line);
391 bp->console_info.num_cols = 80;
392 bp->console_info.num_rows = 25;
393 bp->console_info.orig_x = 0;
394 bp->console_info.orig_y = 24;
395 bp->fpswa = 0;
396
397 return bp;
398}
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 @@
1/*
2 * Copyright (C) 1998-2003 Hewlett-Packard Co
3 * David Mosberger-Tang <davidm@hpl.hp.com>
4 * Stephane Eranian <eranian@hpl.hp.com>
5 */
6#ifndef ssc_h
7#define ssc_h
8
9/* Simulator system calls: */
10
11#define SSC_CONSOLE_INIT 20
12#define SSC_GETCHAR 21
13#define SSC_PUTCHAR 31
14#define SSC_OPEN 50
15#define SSC_CLOSE 51
16#define SSC_READ 52
17#define SSC_WRITE 53
18#define SSC_GET_COMPLETION 54
19#define SSC_WAIT_COMPLETION 55
20#define SSC_CONNECT_INTERRUPT 58
21#define SSC_GENERATE_INTERRUPT 59
22#define SSC_SET_PERIODIC_INTERRUPT 60
23#define SSC_GET_RTC 65
24#define SSC_EXIT 66
25#define SSC_LOAD_SYMBOLS 69
26#define SSC_GET_TOD 74
27
28#define SSC_GET_ARGS 75
29
30/*
31 * Simulator system call.
32 */
33extern long ssc (long arg0, long arg1, long arg2, long arg3, int nr);
34
35#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 @@
1#include <asm/asmmacro.h>
2
3/*
4 * Simulator system call.
5 */
6GLOBAL_ENTRY(ia64_ssc)
7 mov r15=r36
8 break 0x80001
9 br.ret.sptk.many rp
10END(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 @@
1/*
2 * Platform dependent support for HP simulator.
3 *
4 * Copyright (C) 1998, 1999, 2002 Hewlett-Packard Co
5 * David Mosberger-Tang <davidm@hpl.hp.com>
6 * Copyright (C) 1999 Vijay Chander <vijay@engr.sgi.com>
7 */
8#include <linux/config.h>
9
10#include <linux/init.h>
11#include <linux/kernel.h>
12#include <linux/param.h>
13#include <linux/string.h>
14#include <linux/types.h>
15#include <linux/tty.h>
16#include <linux/kdev_t.h>
17#include <linux/console.h>
18
19#include <asm/delay.h>
20#include <asm/irq.h>
21#include <asm/pal.h>
22#include <asm/machvec.h>
23#include <asm/pgtable.h>
24#include <asm/sal.h>
25
26#include "hpsim_ssc.h"
27
28static int simcons_init (struct console *, char *);
29static void simcons_write (struct console *, const char *, unsigned);
30static struct tty_driver *simcons_console_device (struct console *, int *);
31
32struct console hpsim_cons = {
33 .name = "simcons",
34 .write = simcons_write,
35 .device = simcons_console_device,
36 .setup = simcons_init,
37 .flags = CON_PRINTBUFFER,
38 .index = -1,
39};
40
41static int
42simcons_init (struct console *cons, char *options)
43{
44 return 0;
45}
46
47static void
48simcons_write (struct console *cons, const char *buf, unsigned count)
49{
50 unsigned long ch;
51
52 while (count-- > 0) {
53 ch = *buf++;
54 ia64_ssc(ch, 0, 0, 0, SSC_PUTCHAR);
55 if (ch == '\n')
56 ia64_ssc('\r', 0, 0, 0, SSC_PUTCHAR);
57 }
58}
59
60static struct tty_driver *simcons_console_device (struct console *c, int *index)
61{
62 extern struct tty_driver *hp_simserial_driver;
63 *index = c->index;
64 return hp_simserial_driver;
65}
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 @@
1/*
2 * Platform dependent support for HP simulator.
3 *
4 * Copyright (C) 1998-2001 Hewlett-Packard Co
5 * Copyright (C) 1998-2001 David Mosberger-Tang <davidm@hpl.hp.com>
6 */
7
8#include <linux/init.h>
9#include <linux/kernel.h>
10#include <linux/sched.h>
11#include <linux/irq.h>
12
13static unsigned int
14hpsim_irq_startup (unsigned int irq)
15{
16 return 0;
17}
18
19static void
20hpsim_irq_noop (unsigned int irq)
21{
22}
23
24static void
25hpsim_set_affinity_noop (unsigned int a, cpumask_t b)
26{
27}
28
29static struct hw_interrupt_type irq_type_hp_sim = {
30 .typename = "hpsim",
31 .startup = hpsim_irq_startup,
32 .shutdown = hpsim_irq_noop,
33 .enable = hpsim_irq_noop,
34 .disable = hpsim_irq_noop,
35 .ack = hpsim_irq_noop,
36 .end = hpsim_irq_noop,
37 .set_affinity = hpsim_set_affinity_noop,
38};
39
40void __init
41hpsim_irq_init (void)
42{
43 irq_desc_t *idesc;
44 int i;
45
46 for (i = 0; i < NR_IRQS; ++i) {
47 idesc = irq_descp(i);
48 if (idesc->handler == &no_irq_type)
49 idesc->handler = &irq_type_hp_sim;
50 }
51}
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 @@
1#define MACHVEC_PLATFORM_NAME hpsim
2#define MACHVEC_PLATFORM_HEADER <asm/machvec_hpsim.h>
3#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 @@
1/*
2 * Platform dependent support for HP simulator.
3 *
4 * Copyright (C) 1998, 1999, 2002 Hewlett-Packard Co
5 * David Mosberger-Tang <davidm@hpl.hp.com>
6 * Copyright (C) 1999 Vijay Chander <vijay@engr.sgi.com>
7 */
8#include <linux/config.h>
9#include <linux/console.h>
10#include <linux/init.h>
11#include <linux/kdev_t.h>
12#include <linux/kernel.h>
13#include <linux/major.h>
14#include <linux/param.h>
15#include <linux/root_dev.h>
16#include <linux/string.h>
17#include <linux/types.h>
18
19#include <asm/delay.h>
20#include <asm/irq.h>
21#include <asm/pal.h>
22#include <asm/machvec.h>
23#include <asm/pgtable.h>
24#include <asm/sal.h>
25
26#include "hpsim_ssc.h"
27
28void
29ia64_ssc_connect_irq (long intr, long irq)
30{
31 ia64_ssc(intr, irq, 0, 0, SSC_CONNECT_INTERRUPT);
32}
33
34void
35ia64_ctl_trace (long on)
36{
37 ia64_ssc(on, 0, 0, 0, SSC_CTL_TRACE);
38}
39
40void __init
41hpsim_setup (char **cmdline_p)
42{
43 ROOT_DEV = Root_SDA1; /* default to first SCSI drive */
44
45#ifdef CONFIG_HP_SIMSERIAL_CONSOLE
46 {
47 extern struct console hpsim_cons;
48 if (ia64_platform_is("hpsim"))
49 register_console(&hpsim_cons);
50 }
51#endif
52}
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 @@
1/*
2 * Platform dependent support for HP simulator.
3 *
4 * Copyright (C) 1998, 1999 Hewlett-Packard Co
5 * Copyright (C) 1998, 1999 David Mosberger-Tang <davidm@hpl.hp.com>
6 * Copyright (C) 1999 Vijay Chander <vijay@engr.sgi.com>
7 */
8#ifndef _IA64_PLATFORM_HPSIM_SSC_H
9#define _IA64_PLATFORM_HPSIM_SSC_H
10
11/* Simulator system calls: */
12
13#define SSC_CONSOLE_INIT 20
14#define SSC_GETCHAR 21
15#define SSC_PUTCHAR 31
16#define SSC_CONNECT_INTERRUPT 58
17#define SSC_GENERATE_INTERRUPT 59
18#define SSC_SET_PERIODIC_INTERRUPT 60
19#define SSC_GET_RTC 65
20#define SSC_EXIT 66
21#define SSC_LOAD_SYMBOLS 69
22#define SSC_GET_TOD 74
23#define SSC_CTL_TRACE 76
24
25#define SSC_NETDEV_PROBE 100
26#define SSC_NETDEV_SEND 101
27#define SSC_NETDEV_RECV 102
28#define SSC_NETDEV_ATTACH 103
29#define SSC_NETDEV_DETACH 104
30
31/*
32 * Simulator system call.
33 */
34extern long ia64_ssc (long arg0, long arg1, long arg2, long arg3, int nr);
35
36#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 @@
1/*
2 * Simulated Ethernet Driver
3 *
4 * Copyright (C) 1999-2001, 2003 Hewlett-Packard Co
5 * Stephane Eranian <eranian@hpl.hp.com>
6 */
7#include <linux/config.h>
8#include <linux/kernel.h>
9#include <linux/sched.h>
10#include <linux/types.h>
11#include <linux/in.h>
12#include <linux/string.h>
13#include <linux/init.h>
14#include <linux/errno.h>
15#include <linux/interrupt.h>
16#include <linux/netdevice.h>
17#include <linux/etherdevice.h>
18#include <linux/inetdevice.h>
19#include <linux/if_ether.h>
20#include <linux/if_arp.h>
21#include <linux/skbuff.h>
22#include <linux/notifier.h>
23#include <linux/bitops.h>
24#include <asm/system.h>
25#include <asm/irq.h>
26
27#define SIMETH_RECV_MAX 10
28
29/*
30 * Maximum possible received frame for Ethernet.
31 * We preallocate an sk_buff of that size to avoid costly
32 * memcpy for temporary buffer into sk_buff. We do basically
33 * what's done in other drivers, like eepro with a ring.
34 * The difference is, of course, that we don't have real DMA !!!
35 */
36#define SIMETH_FRAME_SIZE ETH_FRAME_LEN
37
38
39#define SSC_NETDEV_PROBE 100
40#define SSC_NETDEV_SEND 101
41#define SSC_NETDEV_RECV 102
42#define SSC_NETDEV_ATTACH 103
43#define SSC_NETDEV_DETACH 104
44
45#define NETWORK_INTR 8
46
47struct simeth_local {
48 struct net_device_stats stats;
49 int simfd; /* descriptor in the simulator */
50};
51
52static int simeth_probe1(void);
53static int simeth_open(struct net_device *dev);
54static int simeth_close(struct net_device *dev);
55static int simeth_tx(struct sk_buff *skb, struct net_device *dev);
56static int simeth_rx(struct net_device *dev);
57static struct net_device_stats *simeth_get_stats(struct net_device *dev);
58static irqreturn_t simeth_interrupt(int irq, void *dev_id, struct pt_regs * regs);
59static void set_multicast_list(struct net_device *dev);
60static int simeth_device_event(struct notifier_block *this,unsigned long event, void *ptr);
61
62static char *simeth_version="0.3";
63
64/*
65 * This variable is used to establish a mapping between the Linux/ia64 kernel
66 * and the host linux kernel.
67 *
68 * As of today, we support only one card, even though most of the code
69 * is ready for many more. The mapping is then:
70 * linux/ia64 -> linux/x86
71 * eth0 -> eth1
72 *
73 * In the future, we some string operations, we could easily support up
74 * to 10 cards (0-9).
75 *
76 * The default mapping can be changed on the kernel command line by
77 * specifying simeth=ethX (or whatever string you want).
78 */
79static char *simeth_device="eth0"; /* default host interface to use */
80
81
82
83static volatile unsigned int card_count; /* how many cards "found" so far */
84static int simeth_debug; /* set to 1 to get debug information */
85
86/*
87 * Used to catch IFF_UP & IFF_DOWN events
88 */
89static struct notifier_block simeth_dev_notifier = {
90 simeth_device_event,
91 0
92};
93
94
95/*
96 * Function used when using a kernel command line option.
97 *
98 * Format: simeth=interface_name (like eth0)
99 */
100static int __init
101simeth_setup(char *str)
102{
103 simeth_device = str;
104 return 1;
105}
106
107__setup("simeth=", simeth_setup);
108
109/*
110 * Function used to probe for simeth devices when not installed
111 * as a loadable module
112 */
113
114int __init
115simeth_probe (void)
116{
117 int r;
118
119 printk(KERN_INFO "simeth: v%s\n", simeth_version);
120
121 r = simeth_probe1();
122
123 if (r == 0) register_netdevice_notifier(&simeth_dev_notifier);
124
125 return r;
126}
127
128extern long ia64_ssc (long, long, long, long, int);
129extern void ia64_ssc_connect_irq (long intr, long irq);
130
131static inline int
132netdev_probe(char *name, unsigned char *ether)
133{
134 return ia64_ssc(__pa(name), __pa(ether), 0,0, SSC_NETDEV_PROBE);
135}
136
137
138static inline int
139netdev_connect(int irq)
140{
141 /* XXX Fix me
142 * this does not support multiple cards
143 * also no return value
144 */
145 ia64_ssc_connect_irq(NETWORK_INTR, irq);
146 return 0;
147}
148
149static inline int
150netdev_attach(int fd, int irq, unsigned int ipaddr)
151{
152 /* this puts the host interface in the right mode (start interrupting) */
153 return ia64_ssc(fd, ipaddr, 0,0, SSC_NETDEV_ATTACH);
154}
155
156
157static inline int
158netdev_detach(int fd)
159{
160 /*
161 * inactivate the host interface (don't interrupt anymore) */
162 return ia64_ssc(fd, 0,0,0, SSC_NETDEV_DETACH);
163}
164
165static inline int
166netdev_send(int fd, unsigned char *buf, unsigned int len)
167{
168 return ia64_ssc(fd, __pa(buf), len, 0, SSC_NETDEV_SEND);
169}
170
171static inline int
172netdev_read(int fd, unsigned char *buf, unsigned int len)
173{
174 return ia64_ssc(fd, __pa(buf), len, 0, SSC_NETDEV_RECV);
175}
176
177/*
178 * Function shared with module code, so cannot be in init section
179 *
180 * So far this function "detects" only one card (test_&_set) but could
181 * be extended easily.
182 *
183 * Return:
184 * - -ENODEV is no device found
185 * - -ENOMEM is no more memory
186 * - 0 otherwise
187 */
188static int
189simeth_probe1(void)
190{
191 unsigned char mac_addr[ETH_ALEN];
192 struct simeth_local *local;
193 struct net_device *dev;
194 int fd, i, err;
195
196 /*
197 * XXX Fix me
198 * let's support just one card for now
199 */
200 if (test_and_set_bit(0, &card_count))
201 return -ENODEV;
202
203 /*
204 * check with the simulator for the device
205 */
206 fd = netdev_probe(simeth_device, mac_addr);
207 if (fd == -1)
208 return -ENODEV;
209
210 dev = alloc_etherdev(sizeof(struct simeth_local));
211 if (!dev)
212 return -ENOMEM;
213
214 memcpy(dev->dev_addr, mac_addr, sizeof(mac_addr));
215
216 local = dev->priv;
217 local->simfd = fd; /* keep track of underlying file descriptor */
218
219 dev->open = simeth_open;
220 dev->stop = simeth_close;
221 dev->hard_start_xmit = simeth_tx;
222 dev->get_stats = simeth_get_stats;
223 dev->set_multicast_list = set_multicast_list; /* no yet used */
224
225 err = register_netdev(dev);
226 if (err) {
227 free_netdev(dev);
228 return err;
229 }
230
231 dev->irq = assign_irq_vector(AUTO_ASSIGN);
232
233 /*
234 * attach the interrupt in the simulator, this does enable interrupts
235 * until a netdev_attach() is called
236 */
237 netdev_connect(dev->irq);
238
239 printk(KERN_INFO "%s: hosteth=%s simfd=%d, HwAddr",
240 dev->name, simeth_device, local->simfd);
241 for(i = 0; i < ETH_ALEN; i++) {
242 printk(" %2.2x", dev->dev_addr[i]);
243 }
244 printk(", IRQ %d\n", dev->irq);
245
246 return 0;
247}
248
249/*
250 * actually binds the device to an interrupt vector
251 */
252static int
253simeth_open(struct net_device *dev)
254{
255 if (request_irq(dev->irq, simeth_interrupt, 0, "simeth", dev)) {
256 printk(KERN_WARNING "simeth: unable to get IRQ %d.\n", dev->irq);
257 return -EAGAIN;
258 }
259
260 netif_start_queue(dev);
261
262 return 0;
263}
264
265/* copied from lapbether.c */
266static __inline__ int dev_is_ethdev(struct net_device *dev)
267{
268 return ( dev->type == ARPHRD_ETHER && strncmp(dev->name, "dummy", 5));
269}
270
271
272/*
273 * Handler for IFF_UP or IFF_DOWN
274 *
275 * The reason for that is that we don't want to be interrupted when the
276 * interface is down. There is no way to unconnect in the simualtor. Instead
277 * we use this function to shutdown packet processing in the frame filter
278 * in the simulator. Thus no interrupts are generated
279 *
280 *
281 * That's also the place where we pass the IP address of this device to the
282 * simulator so that that we can start filtering packets for it
283 *
284 * There may be a better way of doing this, but I don't know which yet.
285 */
286static int
287simeth_device_event(struct notifier_block *this,unsigned long event, void *ptr)
288{
289 struct net_device *dev = ptr;
290 struct simeth_local *local;
291 struct in_device *in_dev;
292 struct in_ifaddr **ifap = NULL;
293 struct in_ifaddr *ifa = NULL;
294 int r;
295
296
297 if ( ! dev ) {
298 printk(KERN_WARNING "simeth_device_event dev=0\n");
299 return NOTIFY_DONE;
300 }
301
302 if ( event != NETDEV_UP && event != NETDEV_DOWN ) return NOTIFY_DONE;
303
304 /*
305 * Check whether or not it's for an ethernet device
306 *
307 * XXX Fixme: This works only as long as we support one
308 * type of ethernet device.
309 */
310 if ( !dev_is_ethdev(dev) ) return NOTIFY_DONE;
311
312 if ((in_dev=dev->ip_ptr) != NULL) {
313 for (ifap=&in_dev->ifa_list; (ifa=*ifap) != NULL; ifap=&ifa->ifa_next)
314 if (strcmp(dev->name, ifa->ifa_label) == 0) break;
315 }
316 if ( ifa == NULL ) {
317 printk(KERN_ERR "simeth_open: can't find device %s's ifa\n", dev->name);
318 return NOTIFY_DONE;
319 }
320
321 printk(KERN_INFO "simeth_device_event: %s ipaddr=0x%x\n",
322 dev->name, htonl(ifa->ifa_local));
323
324 /*
325 * XXX Fix me
326 * if the device was up, and we're simply reconfiguring it, not sure
327 * we get DOWN then UP.
328 */
329
330 local = dev->priv;
331 /* now do it for real */
332 r = event == NETDEV_UP ?
333 netdev_attach(local->simfd, dev->irq, htonl(ifa->ifa_local)):
334 netdev_detach(local->simfd);
335
336 printk(KERN_INFO "simeth: netdev_attach/detach: event=%s ->%d\n",
337 event == NETDEV_UP ? "attach":"detach", r);
338
339 return NOTIFY_DONE;
340}
341
342static int
343simeth_close(struct net_device *dev)
344{
345 netif_stop_queue(dev);
346
347 free_irq(dev->irq, dev);
348
349 return 0;
350}
351
352/*
353 * Only used for debug
354 */
355static void
356frame_print(unsigned char *from, unsigned char *frame, int len)
357{
358 int i;
359
360 printk("%s: (%d) %02x", from, len, frame[0] & 0xff);
361 for(i=1; i < 6; i++ ) {
362 printk(":%02x", frame[i] &0xff);
363 }
364 printk(" %2x", frame[6] &0xff);
365 for(i=7; i < 12; i++ ) {
366 printk(":%02x", frame[i] &0xff);
367 }
368 printk(" [%02x%02x]\n", frame[12], frame[13]);
369
370 for(i=14; i < len; i++ ) {
371 printk("%02x ", frame[i] &0xff);
372 if ( (i%10)==0) printk("\n");
373 }
374 printk("\n");
375}
376
377
378/*
379 * Function used to transmit of frame, very last one on the path before
380 * going to the simulator.
381 */
382static int
383simeth_tx(struct sk_buff *skb, struct net_device *dev)
384{
385 struct simeth_local *local = dev->priv;
386
387#if 0
388 /* ensure we have at least ETH_ZLEN bytes (min frame size) */
389 unsigned int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
390 /* Where do the extra padding bytes comes from inthe skbuff ? */
391#else
392 /* the real driver in the host system is going to take care of that
393 * or maybe it's the NIC itself.
394 */
395 unsigned int length = skb->len;
396#endif
397
398 local->stats.tx_bytes += skb->len;
399 local->stats.tx_packets++;
400
401
402 if (simeth_debug > 5) frame_print("simeth_tx", skb->data, length);
403
404 netdev_send(local->simfd, skb->data, length);
405
406 /*
407 * we are synchronous on write, so we don't simulate a
408 * trasnmit complete interrupt, thus we don't need to arm a tx
409 */
410
411 dev_kfree_skb(skb);
412 return 0;
413}
414
415static inline struct sk_buff *
416make_new_skb(struct net_device *dev)
417{
418 struct sk_buff *nskb;
419
420 /*
421 * The +2 is used to make sure that the IP header is nicely
422 * aligned (on 4byte boundary I assume 14+2=16)
423 */
424 nskb = dev_alloc_skb(SIMETH_FRAME_SIZE + 2);
425 if ( nskb == NULL ) {
426 printk(KERN_NOTICE "%s: memory squeeze. dropping packet.\n", dev->name);
427 return NULL;
428 }
429 nskb->dev = dev;
430
431 skb_reserve(nskb, 2); /* Align IP on 16 byte boundaries */
432
433 skb_put(nskb,SIMETH_FRAME_SIZE);
434
435 return nskb;
436}
437
438/*
439 * called from interrupt handler to process a received frame
440 */
441static int
442simeth_rx(struct net_device *dev)
443{
444 struct simeth_local *local;
445 struct sk_buff *skb;
446 int len;
447 int rcv_count = SIMETH_RECV_MAX;
448
449 local = dev->priv;
450 /*
451 * the loop concept has been borrowed from other drivers
452 * looks to me like it's a throttling thing to avoid pushing to many
453 * packets at one time into the stack. Making sure we can process them
454 * upstream and make forward progress overall
455 */
456 do {
457 if ( (skb=make_new_skb(dev)) == NULL ) {
458 printk(KERN_NOTICE "%s: memory squeeze. dropping packet.\n", dev->name);
459 local->stats.rx_dropped++;
460 return 0;
461 }
462 /*
463 * Read only one frame at a time
464 */
465 len = netdev_read(local->simfd, skb->data, SIMETH_FRAME_SIZE);
466 if ( len == 0 ) {
467 if ( simeth_debug > 0 ) printk(KERN_WARNING "%s: count=%d netdev_read=0\n",
468 dev->name, SIMETH_RECV_MAX-rcv_count);
469 break;
470 }
471#if 0
472 /*
473 * XXX Fix me
474 * Should really do a csum+copy here
475 */
476 memcpy(skb->data, frame, len);
477#endif
478 skb->protocol = eth_type_trans(skb, dev);
479
480 if ( simeth_debug > 6 ) frame_print("simeth_rx", skb->data, len);
481
482 /*
483 * push the packet up & trigger software interrupt
484 */
485 netif_rx(skb);
486
487 local->stats.rx_packets++;
488 local->stats.rx_bytes += len;
489
490 } while ( --rcv_count );
491
492 return len; /* 0 = nothing left to read, otherwise, we can try again */
493}
494
495/*
496 * Interrupt handler (Yes, we can do it too !!!)
497 */
498static irqreturn_t
499simeth_interrupt(int irq, void *dev_id, struct pt_regs * regs)
500{
501 struct net_device *dev = dev_id;
502
503 if ( dev == NULL ) {
504 printk(KERN_WARNING "simeth: irq %d for unknown device\n", irq);
505 return IRQ_NONE;
506 }
507
508 /*
509 * very simple loop because we get interrupts only when receiving
510 */
511 while (simeth_rx(dev));
512 return IRQ_HANDLED;
513}
514
515static struct net_device_stats *
516simeth_get_stats(struct net_device *dev)
517{
518 struct simeth_local *local = dev->priv;
519
520 return &local->stats;
521}
522
523/* fake multicast ability */
524static void
525set_multicast_list(struct net_device *dev)
526{
527 printk(KERN_WARNING "%s: set_multicast_list called\n", dev->name);
528}
529
530__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 @@
1/*
2 * Simulated SCSI driver.
3 *
4 * Copyright (C) 1999, 2001-2003 Hewlett-Packard Co
5 * David Mosberger-Tang <davidm@hpl.hp.com>
6 * Stephane Eranian <eranian@hpl.hp.com>
7 *
8 * 02/01/15 David Mosberger Updated for v2.5.1
9 * 99/12/18 David Mosberger Added support for READ10/WRITE10 needed by linux v2.3.33
10 */
11#include <linux/blkdev.h>
12#include <linux/init.h>
13#include <linux/interrupt.h>
14#include <linux/kernel.h>
15#include <linux/timer.h>
16#include <asm/irq.h>
17
18#include <scsi/scsi.h>
19#include <scsi/scsi_cmnd.h>
20#include <scsi/scsi_device.h>
21#include <scsi/scsi_host.h>
22
23#define DEBUG_SIMSCSI 0
24
25#define SIMSCSI_REQ_QUEUE_LEN 64
26#define DEFAULT_SIMSCSI_ROOT "/var/ski-disks/sd"
27
28/* Simulator system calls: */
29
30#define SSC_OPEN 50
31#define SSC_CLOSE 51
32#define SSC_READ 52
33#define SSC_WRITE 53
34#define SSC_GET_COMPLETION 54
35#define SSC_WAIT_COMPLETION 55
36
37#define SSC_WRITE_ACCESS 2
38#define SSC_READ_ACCESS 1
39
40#if DEBUG_SIMSCSI
41 int simscsi_debug;
42# define DBG simscsi_debug
43#else
44# define DBG 0
45#endif
46
47static struct Scsi_Host *host;
48
49static void simscsi_interrupt (unsigned long val);
50static DECLARE_TASKLET(simscsi_tasklet, simscsi_interrupt, 0);
51
52struct disk_req {
53 unsigned long addr;
54 unsigned len;
55};
56
57struct disk_stat {
58 int fd;
59 unsigned count;
60};
61
62extern long ia64_ssc (long arg0, long arg1, long arg2, long arg3, int nr);
63
64static int desc[16] = {
65 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
66};
67
68static struct queue_entry {
69 struct scsi_cmnd *sc;
70} queue[SIMSCSI_REQ_QUEUE_LEN];
71
72static int rd, wr;
73static atomic_t num_reqs = ATOMIC_INIT(0);
74
75/* base name for default disks */
76static char *simscsi_root = DEFAULT_SIMSCSI_ROOT;
77
78#define MAX_ROOT_LEN 128
79
80/*
81 * used to setup a new base for disk images
82 * to use /foo/bar/disk[a-z] as disk images
83 * you have to specify simscsi=/foo/bar/disk on the command line
84 */
85static int __init
86simscsi_setup (char *s)
87{
88 /* XXX Fix me we may need to strcpy() ? */
89 if (strlen(s) > MAX_ROOT_LEN) {
90 printk(KERN_ERR "simscsi_setup: prefix too long---using default %s\n",
91 simscsi_root);
92 }
93 simscsi_root = s;
94 return 1;
95}
96
97__setup("simscsi=", simscsi_setup);
98
99static void
100simscsi_interrupt (unsigned long val)
101{
102 struct scsi_cmnd *sc;
103
104 while ((sc = queue[rd].sc) != 0) {
105 atomic_dec(&num_reqs);
106 queue[rd].sc = 0;
107 if (DBG)
108 printk("simscsi_interrupt: done with %ld\n", sc->serial_number);
109 (*sc->scsi_done)(sc);
110 rd = (rd + 1) % SIMSCSI_REQ_QUEUE_LEN;
111 }
112}
113
114static int
115simscsi_biosparam (struct scsi_device *sdev, struct block_device *n,
116 sector_t capacity, int ip[])
117{
118 ip[0] = 64; /* heads */
119 ip[1] = 32; /* sectors */
120 ip[2] = capacity >> 11; /* cylinders */
121 return 0;
122}
123
124static void
125simscsi_readwrite (struct scsi_cmnd *sc, int mode, unsigned long offset, unsigned long len)
126{
127 struct disk_stat stat;
128 struct disk_req req;
129
130 req.addr = __pa(sc->request_buffer);
131 req.len = len; /* # of bytes to transfer */
132
133 if (sc->request_bufflen < req.len)
134 return;
135
136 stat.fd = desc[sc->device->id];
137 if (DBG)
138 printk("simscsi_%s @ %lx (off %lx)\n",
139 mode == SSC_READ ? "read":"write", req.addr, offset);
140 ia64_ssc(stat.fd, 1, __pa(&req), offset, mode);
141 ia64_ssc(__pa(&stat), 0, 0, 0, SSC_WAIT_COMPLETION);
142
143 if (stat.count == req.len) {
144 sc->result = GOOD;
145 } else {
146 sc->result = DID_ERROR << 16;
147 }
148}
149
150static void
151simscsi_sg_readwrite (struct scsi_cmnd *sc, int mode, unsigned long offset)
152{
153 int list_len = sc->use_sg;
154 struct scatterlist *sl = (struct scatterlist *)sc->buffer;
155 struct disk_stat stat;
156 struct disk_req req;
157
158 stat.fd = desc[sc->device->id];
159
160 while (list_len) {
161 req.addr = __pa(page_address(sl->page) + sl->offset);
162 req.len = sl->length;
163 if (DBG)
164 printk("simscsi_sg_%s @ %lx (off %lx) use_sg=%d len=%d\n",
165 mode == SSC_READ ? "read":"write", req.addr, offset,
166 list_len, sl->length);
167 ia64_ssc(stat.fd, 1, __pa(&req), offset, mode);
168 ia64_ssc(__pa(&stat), 0, 0, 0, SSC_WAIT_COMPLETION);
169
170 /* should not happen in our case */
171 if (stat.count != req.len) {
172 sc->result = DID_ERROR << 16;
173 return;
174 }
175 offset += sl->length;
176 sl++;
177 list_len--;
178 }
179 sc->result = GOOD;
180}
181
182/*
183 * function handling both READ_6/WRITE_6 (non-scatter/gather mode)
184 * commands.
185 * Added 02/26/99 S.Eranian
186 */
187static void
188simscsi_readwrite6 (struct scsi_cmnd *sc, int mode)
189{
190 unsigned long offset;
191
192 offset = (((sc->cmnd[1] & 0x1f) << 16) | (sc->cmnd[2] << 8) | sc->cmnd[3])*512;
193 if (sc->use_sg > 0)
194 simscsi_sg_readwrite(sc, mode, offset);
195 else
196 simscsi_readwrite(sc, mode, offset, sc->cmnd[4]*512);
197}
198
199static size_t
200simscsi_get_disk_size (int fd)
201{
202 struct disk_stat stat;
203 size_t bit, sectors = 0;
204 struct disk_req req;
205 char buf[512];
206
207 /*
208 * This is a bit kludgey: the simulator doesn't provide a direct way of determining
209 * the disk size, so we do a binary search, assuming a maximum disk size of 4GB.
210 */
211 for (bit = (4UL << 30)/512; bit != 0; bit >>= 1) {
212 req.addr = __pa(&buf);
213 req.len = sizeof(buf);
214 ia64_ssc(fd, 1, __pa(&req), ((sectors | bit) - 1)*512, SSC_READ);
215 stat.fd = fd;
216 ia64_ssc(__pa(&stat), 0, 0, 0, SSC_WAIT_COMPLETION);
217 if (stat.count == sizeof(buf))
218 sectors |= bit;
219 }
220 return sectors - 1; /* return last valid sector number */
221}
222
223static void
224simscsi_readwrite10 (struct scsi_cmnd *sc, int mode)
225{
226 unsigned long offset;
227
228 offset = ( (sc->cmnd[2] << 24) | (sc->cmnd[3] << 16)
229 | (sc->cmnd[4] << 8) | (sc->cmnd[5] << 0))*512;
230 if (sc->use_sg > 0)
231 simscsi_sg_readwrite(sc, mode, offset);
232 else
233 simscsi_readwrite(sc, mode, offset, ((sc->cmnd[7] << 8) | sc->cmnd[8])*512);
234}
235
236static int
237simscsi_queuecommand (struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *))
238{
239 unsigned int target_id = sc->device->id;
240 char fname[MAX_ROOT_LEN+16];
241 size_t disk_size;
242 char *buf;
243#if DEBUG_SIMSCSI
244 register long sp asm ("sp");
245
246 if (DBG)
247 printk("simscsi_queuecommand: target=%d,cmnd=%u,sc=%lu,sp=%lx,done=%p\n",
248 target_id, sc->cmnd[0], sc->serial_number, sp, done);
249#endif
250
251 sc->result = DID_BAD_TARGET << 16;
252 sc->scsi_done = done;
253 if (target_id <= 15 && sc->device->lun == 0) {
254 switch (sc->cmnd[0]) {
255 case INQUIRY:
256 if (sc->request_bufflen < 35) {
257 break;
258 }
259 sprintf (fname, "%s%c", simscsi_root, 'a' + target_id);
260 desc[target_id] = ia64_ssc(__pa(fname), SSC_READ_ACCESS|SSC_WRITE_ACCESS,
261 0, 0, SSC_OPEN);
262 if (desc[target_id] < 0) {
263 /* disk doesn't exist... */
264 break;
265 }
266 buf = sc->request_buffer;
267 buf[0] = 0; /* magnetic disk */
268 buf[1] = 0; /* not a removable medium */
269 buf[2] = 2; /* SCSI-2 compliant device */
270 buf[3] = 2; /* SCSI-2 response data format */
271 buf[4] = 31; /* additional length (bytes) */
272 buf[5] = 0; /* reserved */
273 buf[6] = 0; /* reserved */
274 buf[7] = 0; /* various flags */
275 memcpy(buf + 8, "HP SIMULATED DISK 0.00", 28);
276 sc->result = GOOD;
277 break;
278
279 case TEST_UNIT_READY:
280 sc->result = GOOD;
281 break;
282
283 case READ_6:
284 if (desc[target_id] < 0 )
285 break;
286 simscsi_readwrite6(sc, SSC_READ);
287 break;
288
289 case READ_10:
290 if (desc[target_id] < 0 )
291 break;
292 simscsi_readwrite10(sc, SSC_READ);
293 break;
294
295 case WRITE_6:
296 if (desc[target_id] < 0)
297 break;
298 simscsi_readwrite6(sc, SSC_WRITE);
299 break;
300
301 case WRITE_10:
302 if (desc[target_id] < 0)
303 break;
304 simscsi_readwrite10(sc, SSC_WRITE);
305 break;
306
307
308 case READ_CAPACITY:
309 if (desc[target_id] < 0 || sc->request_bufflen < 8) {
310 break;
311 }
312 buf = sc->request_buffer;
313
314 disk_size = simscsi_get_disk_size(desc[target_id]);
315
316 /* pretend to be a 1GB disk (partition table contains real stuff): */
317 buf[0] = (disk_size >> 24) & 0xff;
318 buf[1] = (disk_size >> 16) & 0xff;
319 buf[2] = (disk_size >> 8) & 0xff;
320 buf[3] = (disk_size >> 0) & 0xff;
321 /* set block size of 512 bytes: */
322 buf[4] = 0;
323 buf[5] = 0;
324 buf[6] = 2;
325 buf[7] = 0;
326 sc->result = GOOD;
327 break;
328
329 case MODE_SENSE:
330 case MODE_SENSE_10:
331 /* sd.c uses this to determine whether disk does write-caching. */
332 memset(sc->request_buffer, 0, 128);
333 sc->result = GOOD;
334 break;
335
336 case START_STOP:
337 printk(KERN_ERR "START_STOP\n");
338 break;
339
340 default:
341 panic("simscsi: unknown SCSI command %u\n", sc->cmnd[0]);
342 }
343 }
344 if (sc->result == DID_BAD_TARGET) {
345 sc->result |= DRIVER_SENSE << 24;
346 sc->sense_buffer[0] = 0x70;
347 sc->sense_buffer[2] = 0x00;
348 }
349 if (atomic_read(&num_reqs) >= SIMSCSI_REQ_QUEUE_LEN) {
350 panic("Attempt to queue command while command is pending!!");
351 }
352 atomic_inc(&num_reqs);
353 queue[wr].sc = sc;
354 wr = (wr + 1) % SIMSCSI_REQ_QUEUE_LEN;
355
356 tasklet_schedule(&simscsi_tasklet);
357 return 0;
358}
359
360static int
361simscsi_host_reset (struct scsi_cmnd *sc)
362{
363 printk(KERN_ERR "simscsi_host_reset: not implemented\n");
364 return 0;
365}
366
367static struct scsi_host_template driver_template = {
368 .name = "simulated SCSI host adapter",
369 .proc_name = "simscsi",
370 .queuecommand = simscsi_queuecommand,
371 .eh_host_reset_handler = simscsi_host_reset,
372 .bios_param = simscsi_biosparam,
373 .can_queue = SIMSCSI_REQ_QUEUE_LEN,
374 .this_id = -1,
375 .sg_tablesize = SG_ALL,
376 .max_sectors = 1024,
377 .cmd_per_lun = SIMSCSI_REQ_QUEUE_LEN,
378 .use_clustering = DISABLE_CLUSTERING,
379};
380
381static int __init
382simscsi_init(void)
383{
384 int error;
385
386 host = scsi_host_alloc(&driver_template, 0);
387 if (!host)
388 return -ENOMEM;
389
390 error = scsi_add_host(host, NULL);
391 if (!error)
392 scsi_scan_host(host);
393 return error;
394}
395
396static void __exit
397simscsi_exit(void)
398{
399 scsi_remove_host(host);
400 scsi_host_put(host);
401}
402
403module_init(simscsi_init);
404module_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 @@
1/*
2 * Simulated Serial Driver (fake serial)
3 *
4 * This driver is mostly used for bringup purposes and will go away.
5 * It has a strong dependency on the system console. All outputs
6 * are rerouted to the same facility as the one used by printk which, in our
7 * case means sys_sim.c console (goes via the simulator). The code hereafter
8 * is completely leveraged from the serial.c driver.
9 *
10 * Copyright (C) 1999-2000, 2002-2003 Hewlett-Packard Co
11 * Stephane Eranian <eranian@hpl.hp.com>
12 * David Mosberger-Tang <davidm@hpl.hp.com>
13 *
14 * 02/04/00 D. Mosberger Merged in serial.c bug fixes in rs_close().
15 * 02/25/00 D. Mosberger Synced up with 2.3.99pre-5 version of serial.c.
16 * 07/30/02 D. Mosberger Replace sti()/cli() with explicit spinlocks & local irq masking
17 */
18
19#include <linux/config.h>
20#include <linux/init.h>
21#include <linux/errno.h>
22#include <linux/sched.h>
23#include <linux/tty.h>
24#include <linux/tty_flip.h>
25#include <linux/major.h>
26#include <linux/fcntl.h>
27#include <linux/mm.h>
28#include <linux/slab.h>
29#include <linux/console.h>
30#include <linux/module.h>
31#include <linux/serial.h>
32#include <linux/serialP.h>
33
34#include <asm/irq.h>
35#include <asm/hw_irq.h>
36#include <asm/uaccess.h>
37
38#ifdef CONFIG_KDB
39# include <linux/kdb.h>
40#endif
41
42#undef SIMSERIAL_DEBUG /* define this to get some debug information */
43
44#define KEYBOARD_INTR 3 /* must match with simulator! */
45
46#define NR_PORTS 1 /* only one port for now */
47#define SERIAL_INLINE 1
48
49#ifdef SERIAL_INLINE
50#define _INLINE_ inline
51#endif
52
53#define IRQ_T(info) ((info->flags & ASYNC_SHARE_IRQ) ? SA_SHIRQ : SA_INTERRUPT)
54
55#define SSC_GETCHAR 21
56
57extern long ia64_ssc (long, long, long, long, int);
58extern void ia64_ssc_connect_irq (long intr, long irq);
59
60static char *serial_name = "SimSerial driver";
61static char *serial_version = "0.6";
62
63/*
64 * This has been extracted from asm/serial.h. We need one eventually but
65 * I don't know exactly what we're going to put in it so just fake one
66 * for now.
67 */
68#define BASE_BAUD ( 1843200 / 16 )
69
70#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST)
71
72/*
73 * Most of the values here are meaningless to this particular driver.
74 * However some values must be preserved for the code (leveraged from serial.c
75 * to work correctly).
76 * port must not be 0
77 * type must not be UNKNOWN
78 * So I picked arbitrary (guess from where?) values instead
79 */
80static struct serial_state rs_table[NR_PORTS]={
81 /* UART CLK PORT IRQ FLAGS */
82 { 0, BASE_BAUD, 0x3F8, 0, STD_COM_FLAGS,0,PORT_16550 } /* ttyS0 */
83};
84
85/*
86 * Just for the fun of it !
87 */
88static struct serial_uart_config uart_config[] = {
89 { "unknown", 1, 0 },
90 { "8250", 1, 0 },
91 { "16450", 1, 0 },
92 { "16550", 1, 0 },
93 { "16550A", 16, UART_CLEAR_FIFO | UART_USE_FIFO },
94 { "cirrus", 1, 0 },
95 { "ST16650", 1, UART_CLEAR_FIFO | UART_STARTECH },
96 { "ST16650V2", 32, UART_CLEAR_FIFO | UART_USE_FIFO |
97 UART_STARTECH },
98 { "TI16750", 64, UART_CLEAR_FIFO | UART_USE_FIFO},
99 { 0, 0}
100};
101
102struct tty_driver *hp_simserial_driver;
103
104static struct async_struct *IRQ_ports[NR_IRQS];
105
106static struct console *console;
107
108static unsigned char *tmp_buf;
109static DECLARE_MUTEX(tmp_buf_sem);
110
111extern struct console *console_drivers; /* from kernel/printk.c */
112
113/*
114 * ------------------------------------------------------------
115 * rs_stop() and rs_start()
116 *
117 * This routines are called before setting or resetting tty->stopped.
118 * They enable or disable transmitter interrupts, as necessary.
119 * ------------------------------------------------------------
120 */
121static void rs_stop(struct tty_struct *tty)
122{
123#ifdef SIMSERIAL_DEBUG
124 printk("rs_stop: tty->stopped=%d tty->hw_stopped=%d tty->flow_stopped=%d\n",
125 tty->stopped, tty->hw_stopped, tty->flow_stopped);
126#endif
127
128}
129
130static void rs_start(struct tty_struct *tty)
131{
132#if SIMSERIAL_DEBUG
133 printk("rs_start: tty->stopped=%d tty->hw_stopped=%d tty->flow_stopped=%d\n",
134 tty->stopped, tty->hw_stopped, tty->flow_stopped);
135#endif
136}
137
138static void receive_chars(struct tty_struct *tty, struct pt_regs *regs)
139{
140 unsigned char ch;
141 static unsigned char seen_esc = 0;
142
143 while ( (ch = ia64_ssc(0, 0, 0, 0, SSC_GETCHAR)) ) {
144 if ( ch == 27 && seen_esc == 0 ) {
145 seen_esc = 1;
146 continue;
147 } else {
148 if ( seen_esc==1 && ch == 'O' ) {
149 seen_esc = 2;
150 continue;
151 } else if ( seen_esc == 2 ) {
152 if ( ch == 'P' ) show_state(); /* F1 key */
153#ifdef CONFIG_KDB
154 if ( ch == 'S' )
155 kdb(KDB_REASON_KEYBOARD, 0, (kdb_eframe_t) regs);
156#endif
157
158 seen_esc = 0;
159 continue;
160 }
161 }
162 seen_esc = 0;
163 if (tty->flip.count >= TTY_FLIPBUF_SIZE) break;
164
165 *tty->flip.char_buf_ptr = ch;
166
167 *tty->flip.flag_buf_ptr = 0;
168
169 tty->flip.flag_buf_ptr++;
170 tty->flip.char_buf_ptr++;
171 tty->flip.count++;
172 }
173 tty_flip_buffer_push(tty);
174}
175
176/*
177 * This is the serial driver's interrupt routine for a single port
178 */
179static irqreturn_t rs_interrupt_single(int irq, void *dev_id, struct pt_regs * regs)
180{
181 struct async_struct * info;
182
183 /*
184 * I don't know exactly why they don't use the dev_id opaque data
185 * pointer instead of this extra lookup table
186 */
187 info = IRQ_ports[irq];
188 if (!info || !info->tty) {
189 printk(KERN_INFO "simrs_interrupt_single: info|tty=0 info=%p problem\n", info);
190 return IRQ_NONE;
191 }
192 /*
193 * pretty simple in our case, because we only get interrupts
194 * on inbound traffic
195 */
196 receive_chars(info->tty, regs);
197 return IRQ_HANDLED;
198}
199
200/*
201 * -------------------------------------------------------------------
202 * Here ends the serial interrupt routines.
203 * -------------------------------------------------------------------
204 */
205
206#if 0
207/*
208 * not really used in our situation so keep them commented out for now
209 */
210static DECLARE_TASK_QUEUE(tq_serial); /* used to be at the top of the file */
211static void do_serial_bh(void)
212{
213 run_task_queue(&tq_serial);
214 printk(KERN_ERR "do_serial_bh: called\n");
215}
216#endif
217
218static void do_softint(void *private_)
219{
220 printk(KERN_ERR "simserial: do_softint called\n");
221}
222
223static void rs_put_char(struct tty_struct *tty, unsigned char ch)
224{
225 struct async_struct *info = (struct async_struct *)tty->driver_data;
226 unsigned long flags;
227
228 if (!tty || !info->xmit.buf) return;
229
230 local_irq_save(flags);
231 if (CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE) == 0) {
232 local_irq_restore(flags);
233 return;
234 }
235 info->xmit.buf[info->xmit.head] = ch;
236 info->xmit.head = (info->xmit.head + 1) & (SERIAL_XMIT_SIZE-1);
237 local_irq_restore(flags);
238}
239
240static _INLINE_ void transmit_chars(struct async_struct *info, int *intr_done)
241{
242 int count;
243 unsigned long flags;
244
245
246 local_irq_save(flags);
247
248 if (info->x_char) {
249 char c = info->x_char;
250
251 console->write(console, &c, 1);
252
253 info->state->icount.tx++;
254 info->x_char = 0;
255
256 goto out;
257 }
258
259 if (info->xmit.head == info->xmit.tail || info->tty->stopped || info->tty->hw_stopped) {
260#ifdef SIMSERIAL_DEBUG
261 printk("transmit_chars: head=%d, tail=%d, stopped=%d\n",
262 info->xmit.head, info->xmit.tail, info->tty->stopped);
263#endif
264 goto out;
265 }
266 /*
267 * We removed the loop and try to do it in to chunks. We need
268 * 2 operations maximum because it's a ring buffer.
269 *
270 * First from current to tail if possible.
271 * Then from the beginning of the buffer until necessary
272 */
273
274 count = min(CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE),
275 SERIAL_XMIT_SIZE - info->xmit.tail);
276 console->write(console, info->xmit.buf+info->xmit.tail, count);
277
278 info->xmit.tail = (info->xmit.tail+count) & (SERIAL_XMIT_SIZE-1);
279
280 /*
281 * We have more at the beginning of the buffer
282 */
283 count = CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
284 if (count) {
285 console->write(console, info->xmit.buf, count);
286 info->xmit.tail += count;
287 }
288out:
289 local_irq_restore(flags);
290}
291
292static void rs_flush_chars(struct tty_struct *tty)
293{
294 struct async_struct *info = (struct async_struct *)tty->driver_data;
295
296 if (info->xmit.head == info->xmit.tail || tty->stopped || tty->hw_stopped ||
297 !info->xmit.buf)
298 return;
299
300 transmit_chars(info, NULL);
301}
302
303
304static int rs_write(struct tty_struct * tty,
305 const unsigned char *buf, int count)
306{
307 int c, ret = 0;
308 struct async_struct *info = (struct async_struct *)tty->driver_data;
309 unsigned long flags;
310
311 if (!tty || !info->xmit.buf || !tmp_buf) return 0;
312
313 local_irq_save(flags);
314 while (1) {
315 c = CIRC_SPACE_TO_END(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
316 if (count < c)
317 c = count;
318 if (c <= 0) {
319 break;
320 }
321 memcpy(info->xmit.buf + info->xmit.head, buf, c);
322 info->xmit.head = ((info->xmit.head + c) &
323 (SERIAL_XMIT_SIZE-1));
324 buf += c;
325 count -= c;
326 ret += c;
327 }
328 local_irq_restore(flags);
329 /*
330 * Hey, we transmit directly from here in our case
331 */
332 if (CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE)
333 && !tty->stopped && !tty->hw_stopped) {
334 transmit_chars(info, NULL);
335 }
336 return ret;
337}
338
339static int rs_write_room(struct tty_struct *tty)
340{
341 struct async_struct *info = (struct async_struct *)tty->driver_data;
342
343 return CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
344}
345
346static int rs_chars_in_buffer(struct tty_struct *tty)
347{
348 struct async_struct *info = (struct async_struct *)tty->driver_data;
349
350 return CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
351}
352
353static void rs_flush_buffer(struct tty_struct *tty)
354{
355 struct async_struct *info = (struct async_struct *)tty->driver_data;
356 unsigned long flags;
357
358 local_irq_save(flags);
359 info->xmit.head = info->xmit.tail = 0;
360 local_irq_restore(flags);
361
362 wake_up_interruptible(&tty->write_wait);
363
364 if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
365 tty->ldisc.write_wakeup)
366 (tty->ldisc.write_wakeup)(tty);
367}
368
369/*
370 * This function is used to send a high-priority XON/XOFF character to
371 * the device
372 */
373static void rs_send_xchar(struct tty_struct *tty, char ch)
374{
375 struct async_struct *info = (struct async_struct *)tty->driver_data;
376
377 info->x_char = ch;
378 if (ch) {
379 /*
380 * I guess we could call console->write() directly but
381 * let's do that for now.
382 */
383 transmit_chars(info, NULL);
384 }
385}
386
387/*
388 * ------------------------------------------------------------
389 * rs_throttle()
390 *
391 * This routine is called by the upper-layer tty layer to signal that
392 * incoming characters should be throttled.
393 * ------------------------------------------------------------
394 */
395static void rs_throttle(struct tty_struct * tty)
396{
397 if (I_IXOFF(tty)) rs_send_xchar(tty, STOP_CHAR(tty));
398
399 printk(KERN_INFO "simrs_throttle called\n");
400}
401
402static void rs_unthrottle(struct tty_struct * tty)
403{
404 struct async_struct *info = (struct async_struct *)tty->driver_data;
405
406 if (I_IXOFF(tty)) {
407 if (info->x_char)
408 info->x_char = 0;
409 else
410 rs_send_xchar(tty, START_CHAR(tty));
411 }
412 printk(KERN_INFO "simrs_unthrottle called\n");
413}
414
415/*
416 * rs_break() --- routine which turns the break handling on or off
417 */
418static void rs_break(struct tty_struct *tty, int break_state)
419{
420}
421
422static int rs_ioctl(struct tty_struct *tty, struct file * file,
423 unsigned int cmd, unsigned long arg)
424{
425 if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
426 (cmd != TIOCSERCONFIG) && (cmd != TIOCSERGSTRUCT) &&
427 (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) {
428 if (tty->flags & (1 << TTY_IO_ERROR))
429 return -EIO;
430 }
431
432 switch (cmd) {
433 case TIOCMGET:
434 printk(KERN_INFO "rs_ioctl: TIOCMGET called\n");
435 return -EINVAL;
436 case TIOCMBIS:
437 case TIOCMBIC:
438 case TIOCMSET:
439 printk(KERN_INFO "rs_ioctl: TIOCMBIS/BIC/SET called\n");
440 return -EINVAL;
441 case TIOCGSERIAL:
442 printk(KERN_INFO "simrs_ioctl TIOCGSERIAL called\n");
443 return 0;
444 case TIOCSSERIAL:
445 printk(KERN_INFO "simrs_ioctl TIOCSSERIAL called\n");
446 return 0;
447 case TIOCSERCONFIG:
448 printk(KERN_INFO "rs_ioctl: TIOCSERCONFIG called\n");
449 return -EINVAL;
450
451 case TIOCSERGETLSR: /* Get line status register */
452 printk(KERN_INFO "rs_ioctl: TIOCSERGETLSR called\n");
453 return -EINVAL;
454
455 case TIOCSERGSTRUCT:
456 printk(KERN_INFO "rs_ioctl: TIOCSERGSTRUCT called\n");
457#if 0
458 if (copy_to_user((struct async_struct *) arg,
459 info, sizeof(struct async_struct)))
460 return -EFAULT;
461#endif
462 return 0;
463
464 /*
465 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
466 * - mask passed in arg for lines of interest
467 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
468 * Caller should use TIOCGICOUNT to see which one it was
469 */
470 case TIOCMIWAIT:
471 printk(KERN_INFO "rs_ioctl: TIOCMIWAIT: called\n");
472 return 0;
473 /*
474 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
475 * Return: write counters to the user passed counter struct
476 * NB: both 1->0 and 0->1 transitions are counted except for
477 * RI where only 0->1 is counted.
478 */
479 case TIOCGICOUNT:
480 printk(KERN_INFO "rs_ioctl: TIOCGICOUNT called\n");
481 return 0;
482
483 case TIOCSERGWILD:
484 case TIOCSERSWILD:
485 /* "setserial -W" is called in Debian boot */
486 printk (KERN_INFO "TIOCSER?WILD ioctl obsolete, ignored.\n");
487 return 0;
488
489 default:
490 return -ENOIOCTLCMD;
491 }
492 return 0;
493}
494
495#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
496
497static void rs_set_termios(struct tty_struct *tty, struct termios *old_termios)
498{
499 unsigned int cflag = tty->termios->c_cflag;
500
501 if ( (cflag == old_termios->c_cflag)
502 && ( RELEVANT_IFLAG(tty->termios->c_iflag)
503 == RELEVANT_IFLAG(old_termios->c_iflag)))
504 return;
505
506
507 /* Handle turning off CRTSCTS */
508 if ((old_termios->c_cflag & CRTSCTS) &&
509 !(tty->termios->c_cflag & CRTSCTS)) {
510 tty->hw_stopped = 0;
511 rs_start(tty);
512 }
513}
514/*
515 * This routine will shutdown a serial port; interrupts are disabled, and
516 * DTR is dropped if the hangup on close termio flag is on.
517 */
518static void shutdown(struct async_struct * info)
519{
520 unsigned long flags;
521 struct serial_state *state;
522 int retval;
523
524 if (!(info->flags & ASYNC_INITIALIZED)) return;
525
526 state = info->state;
527
528#ifdef SIMSERIAL_DEBUG
529 printk("Shutting down serial port %d (irq %d)....", info->line,
530 state->irq);
531#endif
532
533 local_irq_save(flags);
534 {
535 /*
536 * First unlink the serial port from the IRQ chain...
537 */
538 if (info->next_port)
539 info->next_port->prev_port = info->prev_port;
540 if (info->prev_port)
541 info->prev_port->next_port = info->next_port;
542 else
543 IRQ_ports[state->irq] = info->next_port;
544
545 /*
546 * Free the IRQ, if necessary
547 */
548 if (state->irq && (!IRQ_ports[state->irq] ||
549 !IRQ_ports[state->irq]->next_port)) {
550 if (IRQ_ports[state->irq]) {
551 free_irq(state->irq, NULL);
552 retval = request_irq(state->irq, rs_interrupt_single,
553 IRQ_T(info), "serial", NULL);
554
555 if (retval)
556 printk(KERN_ERR "serial shutdown: request_irq: error %d"
557 " Couldn't reacquire IRQ.\n", retval);
558 } else
559 free_irq(state->irq, NULL);
560 }
561
562 if (info->xmit.buf) {
563 free_page((unsigned long) info->xmit.buf);
564 info->xmit.buf = 0;
565 }
566
567 if (info->tty) set_bit(TTY_IO_ERROR, &info->tty->flags);
568
569 info->flags &= ~ASYNC_INITIALIZED;
570 }
571 local_irq_restore(flags);
572}
573
574/*
575 * ------------------------------------------------------------
576 * rs_close()
577 *
578 * This routine is called when the serial port gets closed. First, we
579 * wait for the last remaining data to be sent. Then, we unlink its
580 * async structure from the interrupt chain if necessary, and we free
581 * that IRQ if nothing is left in the chain.
582 * ------------------------------------------------------------
583 */
584static void rs_close(struct tty_struct *tty, struct file * filp)
585{
586 struct async_struct * info = (struct async_struct *)tty->driver_data;
587 struct serial_state *state;
588 unsigned long flags;
589
590 if (!info ) return;
591
592 state = info->state;
593
594 local_irq_save(flags);
595 if (tty_hung_up_p(filp)) {
596#ifdef SIMSERIAL_DEBUG
597 printk("rs_close: hung_up\n");
598#endif
599 local_irq_restore(flags);
600 return;
601 }
602#ifdef SIMSERIAL_DEBUG
603 printk("rs_close ttys%d, count = %d\n", info->line, state->count);
604#endif
605 if ((tty->count == 1) && (state->count != 1)) {
606 /*
607 * Uh, oh. tty->count is 1, which means that the tty
608 * structure will be freed. state->count should always
609 * be one in these conditions. If it's greater than
610 * one, we've got real problems, since it means the
611 * serial port won't be shutdown.
612 */
613 printk(KERN_ERR "rs_close: bad serial port count; tty->count is 1, "
614 "state->count is %d\n", state->count);
615 state->count = 1;
616 }
617 if (--state->count < 0) {
618 printk(KERN_ERR "rs_close: bad serial port count for ttys%d: %d\n",
619 info->line, state->count);
620 state->count = 0;
621 }
622 if (state->count) {
623 local_irq_restore(flags);
624 return;
625 }
626 info->flags |= ASYNC_CLOSING;
627 local_irq_restore(flags);
628
629 /*
630 * Now we wait for the transmit buffer to clear; and we notify
631 * the line discipline to only process XON/XOFF characters.
632 */
633 shutdown(info);
634 if (tty->driver->flush_buffer) tty->driver->flush_buffer(tty);
635 if (tty->ldisc.flush_buffer) tty->ldisc.flush_buffer(tty);
636 info->event = 0;
637 info->tty = 0;
638 if (info->blocked_open) {
639 if (info->close_delay) {
640 current->state = TASK_INTERRUPTIBLE;
641 schedule_timeout(info->close_delay);
642 }
643 wake_up_interruptible(&info->open_wait);
644 }
645 info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
646 wake_up_interruptible(&info->close_wait);
647}
648
649/*
650 * rs_wait_until_sent() --- wait until the transmitter is empty
651 */
652static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
653{
654}
655
656
657/*
658 * rs_hangup() --- called by tty_hangup() when a hangup is signaled.
659 */
660static void rs_hangup(struct tty_struct *tty)
661{
662 struct async_struct * info = (struct async_struct *)tty->driver_data;
663 struct serial_state *state = info->state;
664
665#ifdef SIMSERIAL_DEBUG
666 printk("rs_hangup: called\n");
667#endif
668
669 state = info->state;
670
671 rs_flush_buffer(tty);
672 if (info->flags & ASYNC_CLOSING)
673 return;
674 shutdown(info);
675
676 info->event = 0;
677 state->count = 0;
678 info->flags &= ~ASYNC_NORMAL_ACTIVE;
679 info->tty = 0;
680 wake_up_interruptible(&info->open_wait);
681}
682
683
684static int get_async_struct(int line, struct async_struct **ret_info)
685{
686 struct async_struct *info;
687 struct serial_state *sstate;
688
689 sstate = rs_table + line;
690 sstate->count++;
691 if (sstate->info) {
692 *ret_info = sstate->info;
693 return 0;
694 }
695 info = kmalloc(sizeof(struct async_struct), GFP_KERNEL);
696 if (!info) {
697 sstate->count--;
698 return -ENOMEM;
699 }
700 memset(info, 0, sizeof(struct async_struct));
701 init_waitqueue_head(&info->open_wait);
702 init_waitqueue_head(&info->close_wait);
703 init_waitqueue_head(&info->delta_msr_wait);
704 info->magic = SERIAL_MAGIC;
705 info->port = sstate->port;
706 info->flags = sstate->flags;
707 info->xmit_fifo_size = sstate->xmit_fifo_size;
708 info->line = line;
709 INIT_WORK(&info->work, do_softint, info);
710 info->state = sstate;
711 if (sstate->info) {
712 kfree(info);
713 *ret_info = sstate->info;
714 return 0;
715 }
716 *ret_info = sstate->info = info;
717 return 0;
718}
719
720static int
721startup(struct async_struct *info)
722{
723 unsigned long flags;
724 int retval=0;
725 irqreturn_t (*handler)(int, void *, struct pt_regs *);
726 struct serial_state *state= info->state;
727 unsigned long page;
728
729 page = get_zeroed_page(GFP_KERNEL);
730 if (!page)
731 return -ENOMEM;
732
733 local_irq_save(flags);
734
735 if (info->flags & ASYNC_INITIALIZED) {
736 free_page(page);
737 goto errout;
738 }
739
740 if (!state->port || !state->type) {
741 if (info->tty) set_bit(TTY_IO_ERROR, &info->tty->flags);
742 free_page(page);
743 goto errout;
744 }
745 if (info->xmit.buf)
746 free_page(page);
747 else
748 info->xmit.buf = (unsigned char *) page;
749
750#ifdef SIMSERIAL_DEBUG
751 printk("startup: ttys%d (irq %d)...", info->line, state->irq);
752#endif
753
754 /*
755 * Allocate the IRQ if necessary
756 */
757 if (state->irq && (!IRQ_ports[state->irq] ||
758 !IRQ_ports[state->irq]->next_port)) {
759 if (IRQ_ports[state->irq]) {
760 retval = -EBUSY;
761 goto errout;
762 } else
763 handler = rs_interrupt_single;
764
765 retval = request_irq(state->irq, handler, IRQ_T(info), "simserial", NULL);
766 if (retval) {
767 if (capable(CAP_SYS_ADMIN)) {
768 if (info->tty)
769 set_bit(TTY_IO_ERROR,
770 &info->tty->flags);
771 retval = 0;
772 }
773 goto errout;
774 }
775 }
776
777 /*
778 * Insert serial port into IRQ chain.
779 */
780 info->prev_port = 0;
781 info->next_port = IRQ_ports[state->irq];
782 if (info->next_port)
783 info->next_port->prev_port = info;
784 IRQ_ports[state->irq] = info;
785
786 if (info->tty) clear_bit(TTY_IO_ERROR, &info->tty->flags);
787
788 info->xmit.head = info->xmit.tail = 0;
789
790#if 0
791 /*
792 * Set up serial timers...
793 */
794 timer_table[RS_TIMER].expires = jiffies + 2*HZ/100;
795 timer_active |= 1 << RS_TIMER;
796#endif
797
798 /*
799 * Set up the tty->alt_speed kludge
800 */
801 if (info->tty) {
802 if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
803 info->tty->alt_speed = 57600;
804 if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
805 info->tty->alt_speed = 115200;
806 if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
807 info->tty->alt_speed = 230400;
808 if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
809 info->tty->alt_speed = 460800;
810 }
811
812 info->flags |= ASYNC_INITIALIZED;
813 local_irq_restore(flags);
814 return 0;
815
816errout:
817 local_irq_restore(flags);
818 return retval;
819}
820
821
822/*
823 * This routine is called whenever a serial port is opened. It
824 * enables interrupts for a serial port, linking in its async structure into
825 * the IRQ chain. It also performs the serial-specific
826 * initialization for the tty structure.
827 */
828static int rs_open(struct tty_struct *tty, struct file * filp)
829{
830 struct async_struct *info;
831 int retval, line;
832 unsigned long page;
833
834 line = tty->index;
835 if ((line < 0) || (line >= NR_PORTS))
836 return -ENODEV;
837 retval = get_async_struct(line, &info);
838 if (retval)
839 return retval;
840 tty->driver_data = info;
841 info->tty = tty;
842
843#ifdef SIMSERIAL_DEBUG
844 printk("rs_open %s, count = %d\n", tty->name, info->state->count);
845#endif
846 info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
847
848 if (!tmp_buf) {
849 page = get_zeroed_page(GFP_KERNEL);
850 if (!page)
851 return -ENOMEM;
852 if (tmp_buf)
853 free_page(page);
854 else
855 tmp_buf = (unsigned char *) page;
856 }
857
858 /*
859 * If the port is the middle of closing, bail out now
860 */
861 if (tty_hung_up_p(filp) ||
862 (info->flags & ASYNC_CLOSING)) {
863 if (info->flags & ASYNC_CLOSING)
864 interruptible_sleep_on(&info->close_wait);
865#ifdef SERIAL_DO_RESTART
866 return ((info->flags & ASYNC_HUP_NOTIFY) ?
867 -EAGAIN : -ERESTARTSYS);
868#else
869 return -EAGAIN;
870#endif
871 }
872
873 /*
874 * Start up serial port
875 */
876 retval = startup(info);
877 if (retval) {
878 return retval;
879 }
880
881 /*
882 * figure out which console to use (should be one already)
883 */
884 console = console_drivers;
885 while (console) {
886 if ((console->flags & CON_ENABLED) && console->write) break;
887 console = console->next;
888 }
889
890#ifdef SIMSERIAL_DEBUG
891 printk("rs_open ttys%d successful\n", info->line);
892#endif
893 return 0;
894}
895
896/*
897 * /proc fs routines....
898 */
899
900static inline int line_info(char *buf, struct serial_state *state)
901{
902 return sprintf(buf, "%d: uart:%s port:%lX irq:%d\n",
903 state->line, uart_config[state->type].name,
904 state->port, state->irq);
905}
906
907static int rs_read_proc(char *page, char **start, off_t off, int count,
908 int *eof, void *data)
909{
910 int i, len = 0, l;
911 off_t begin = 0;
912
913 len += sprintf(page, "simserinfo:1.0 driver:%s\n", serial_version);
914 for (i = 0; i < NR_PORTS && len < 4000; i++) {
915 l = line_info(page + len, &rs_table[i]);
916 len += l;
917 if (len+begin > off+count)
918 goto done;
919 if (len+begin < off) {
920 begin += len;
921 len = 0;
922 }
923 }
924 *eof = 1;
925done:
926 if (off >= len+begin)
927 return 0;
928 *start = page + (begin-off);
929 return ((count < begin+len-off) ? count : begin+len-off);
930}
931
932/*
933 * ---------------------------------------------------------------------
934 * rs_init() and friends
935 *
936 * rs_init() is called at boot-time to initialize the serial driver.
937 * ---------------------------------------------------------------------
938 */
939
940/*
941 * This routine prints out the appropriate serial driver version
942 * number, and identifies which options were configured into this
943 * driver.
944 */
945static inline void show_serial_version(void)
946{
947 printk(KERN_INFO "%s version %s with", serial_name, serial_version);
948 printk(KERN_INFO " no serial options enabled\n");
949}
950
951static struct tty_operations hp_ops = {
952 .open = rs_open,
953 .close = rs_close,
954 .write = rs_write,
955 .put_char = rs_put_char,
956 .flush_chars = rs_flush_chars,
957 .write_room = rs_write_room,
958 .chars_in_buffer = rs_chars_in_buffer,
959 .flush_buffer = rs_flush_buffer,
960 .ioctl = rs_ioctl,
961 .throttle = rs_throttle,
962 .unthrottle = rs_unthrottle,
963 .send_xchar = rs_send_xchar,
964 .set_termios = rs_set_termios,
965 .stop = rs_stop,
966 .start = rs_start,
967 .hangup = rs_hangup,
968 .break_ctl = rs_break,
969 .wait_until_sent = rs_wait_until_sent,
970 .read_proc = rs_read_proc,
971};
972
973/*
974 * The serial driver boot-time initialization code!
975 */
976static int __init
977simrs_init (void)
978{
979 int i;
980 struct serial_state *state;
981
982 if (!ia64_platform_is("hpsim"))
983 return -ENODEV;
984
985 hp_simserial_driver = alloc_tty_driver(1);
986 if (!hp_simserial_driver)
987 return -ENOMEM;
988
989 show_serial_version();
990
991 /* Initialize the tty_driver structure */
992
993 hp_simserial_driver->owner = THIS_MODULE;
994 hp_simserial_driver->driver_name = "simserial";
995 hp_simserial_driver->name = "ttyS";
996 hp_simserial_driver->major = TTY_MAJOR;
997 hp_simserial_driver->minor_start = 64;
998 hp_simserial_driver->type = TTY_DRIVER_TYPE_SERIAL;
999 hp_simserial_driver->subtype = SERIAL_TYPE_NORMAL;
1000 hp_simserial_driver->init_termios = tty_std_termios;
1001 hp_simserial_driver->init_termios.c_cflag =
1002 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
1003 hp_simserial_driver->flags = TTY_DRIVER_REAL_RAW;
1004 tty_set_operations(hp_simserial_driver, &hp_ops);
1005
1006 /*
1007 * Let's have a little bit of fun !
1008 */
1009 for (i = 0, state = rs_table; i < NR_PORTS; i++,state++) {
1010
1011 if (state->type == PORT_UNKNOWN) continue;
1012
1013 if (!state->irq) {
1014 state->irq = assign_irq_vector(AUTO_ASSIGN);
1015 ia64_ssc_connect_irq(KEYBOARD_INTR, state->irq);
1016 }
1017
1018 printk(KERN_INFO "ttyS%d at 0x%04lx (irq = %d) is a %s\n",
1019 state->line,
1020 state->port, state->irq,
1021 uart_config[state->type].name);
1022 }
1023
1024 if (tty_register_driver(hp_simserial_driver))
1025 panic("Couldn't register simserial driver\n");
1026
1027 return 0;
1028}
1029
1030#ifndef MODULE
1031__initcall(simrs_init);
1032#endif
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-18 02:41:46 -0500