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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-16 20:58:08 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-16 20:58:08 -0400
commit489de30259e667d7bc47da9da44a0270b050cd97 (patch)
tree6807814f443fe2c5d041c3bc3fe3ca8d22a955ca /arch/powerpc/kernel
parent1f1c2881f673671539b25686df463518d69c4649 (diff)
parentbf22f6fe2d72b4d7e9035be8ceb340414cf490e3 (diff)
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (209 commits) [POWERPC] Create add_rtc() function to enable the RTC CMOS driver [POWERPC] Add H_ILLAN_ATTRIBUTES hcall number [POWERPC] xilinxfb: Parameterize xilinxfb platform device registration [POWERPC] Oprofile support for Power 5++ [POWERPC] Enable arbitary speed tty ioctls and split input/output speed [POWERPC] Make drivers/char/hvc_console.c:khvcd() static [POWERPC] Remove dead code for preventing pread() and pwrite() calls [POWERPC] Remove unnecessary #undef printk from prom.c [POWERPC] Fix typo in Ebony default DTS [POWERPC] Check for NULL ppc_md.init_IRQ() before calling [POWERPC] Remove extra return statement [POWERPC] pasemi: Don't auto-select CONFIG_EMBEDDED [POWERPC] pasemi: Rename platform [POWERPC] arch/powerpc/kernel/sysfs.c: Move NUMA exports [POWERPC] Add __read_mostly support for powerpc [POWERPC] Modify sched_clock() to make CONFIG_PRINTK_TIME more sane [POWERPC] Create a dummy zImage if no valid platform has been selected [POWERPC] PS3: Bootwrapper support. [POWERPC] powermac i2c: Use mutex [POWERPC] Schedule removal of arch/ppc ... Fixed up conflicts manually in: Documentation/feature-removal-schedule.txt arch/powerpc/kernel/pci_32.c arch/powerpc/kernel/pci_64.c include/asm-powerpc/pci.h and asked the powerpc people to double-check the result..
Diffstat (limited to 'arch/powerpc/kernel')
-rw-r--r--arch/powerpc/kernel/Makefile7
-rw-r--r--arch/powerpc/kernel/cputable.c35
-rw-r--r--arch/powerpc/kernel/head_32.S122
-rw-r--r--arch/powerpc/kernel/head_64.S4
-rw-r--r--arch/powerpc/kernel/io.c12
-rw-r--r--arch/powerpc/kernel/irq.c60
-rw-r--r--arch/powerpc/kernel/isa-bridge.c271
-rw-r--r--arch/powerpc/kernel/misc_32.S10
-rw-r--r--arch/powerpc/kernel/misc_64.S26
-rw-r--r--arch/powerpc/kernel/of_platform.c8
-rw-r--r--arch/powerpc/kernel/pci-common.c454
-rw-r--r--arch/powerpc/kernel/pci_32.c510
-rw-r--r--arch/powerpc/kernel/pci_64.c750
-rw-r--r--arch/powerpc/kernel/ppc_ksyms.c5
-rw-r--r--arch/powerpc/kernel/process.c14
-rw-r--r--arch/powerpc/kernel/prom.c29
-rw-r--r--arch/powerpc/kernel/prom_init.c4
-rw-r--r--arch/powerpc/kernel/ptrace-common.h161
-rw-r--r--arch/powerpc/kernel/ptrace.c325
-rw-r--r--arch/powerpc/kernel/ptrace32.c239
-rw-r--r--arch/powerpc/kernel/rtas_pci.c7
-rw-r--r--arch/powerpc/kernel/setup-common.c21
-rw-r--r--arch/powerpc/kernel/setup_32.c12
-rw-r--r--arch/powerpc/kernel/setup_64.c12
-rw-r--r--arch/powerpc/kernel/signal.c180
-rw-r--r--arch/powerpc/kernel/signal.h55
-rw-r--r--arch/powerpc/kernel/signal_32.c191
-rw-r--r--arch/powerpc/kernel/signal_64.c182
-rw-r--r--arch/powerpc/kernel/sysfs.c5
-rw-r--r--arch/powerpc/kernel/time.c65
-rw-r--r--arch/powerpc/kernel/vdso.c2
-rw-r--r--arch/powerpc/kernel/vmlinux.lds.S6
32 files changed, 1681 insertions, 2103 deletions
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 3e779f07f21b..42c42ecad00c 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -12,7 +12,8 @@ endif
12 12
13obj-y := semaphore.o cputable.o ptrace.o syscalls.o \ 13obj-y := semaphore.o cputable.o ptrace.o syscalls.o \
14 irq.o align.o signal_32.o pmc.o vdso.o \ 14 irq.o align.o signal_32.o pmc.o vdso.o \
15 init_task.o process.o systbl.o idle.o 15 init_task.o process.o systbl.o idle.o \
16 signal.o
16obj-y += vdso32/ 17obj-y += vdso32/
17obj-$(CONFIG_PPC64) += setup_64.o binfmt_elf32.o sys_ppc32.o \ 18obj-$(CONFIG_PPC64) += setup_64.o binfmt_elf32.o sys_ppc32.o \
18 signal_64.o ptrace32.o \ 19 signal_64.o ptrace32.o \
@@ -65,9 +66,9 @@ obj-$(CONFIG_PPC_UDBG_16550) += legacy_serial.o udbg_16550.o
65module-$(CONFIG_PPC64) += module_64.o 66module-$(CONFIG_PPC64) += module_64.o
66obj-$(CONFIG_MODULES) += $(module-y) 67obj-$(CONFIG_MODULES) += $(module-y)
67 68
68pci64-$(CONFIG_PPC64) += pci_64.o pci_dn.o 69pci64-$(CONFIG_PPC64) += pci_64.o pci_dn.o isa-bridge.o
69pci32-$(CONFIG_PPC32) := pci_32.o 70pci32-$(CONFIG_PPC32) := pci_32.o
70obj-$(CONFIG_PCI) += $(pci64-y) $(pci32-y) 71obj-$(CONFIG_PCI) += $(pci64-y) $(pci32-y) pci-common.o
71obj-$(CONFIG_PCI_MSI) += msi.o 72obj-$(CONFIG_PCI_MSI) += msi.o
72kexec-$(CONFIG_PPC64) := machine_kexec_64.o 73kexec-$(CONFIG_PPC64) := machine_kexec_64.o
73kexec-$(CONFIG_PPC32) := machine_kexec_32.o 74kexec-$(CONFIG_PPC32) := machine_kexec_32.o
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index b2b5d664d328..b1f8000952f3 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -294,6 +294,21 @@ static struct cpu_spec cpu_specs[] = {
294 .oprofile_mmcra_sipr = MMCRA_SIPR, 294 .oprofile_mmcra_sipr = MMCRA_SIPR,
295 .platform = "power5", 295 .platform = "power5",
296 }, 296 },
297 { /* Power5++ */
298 .pvr_mask = 0xffffff00,
299 .pvr_value = 0x003b0300,
300 .cpu_name = "POWER5+ (gs)",
301 .cpu_features = CPU_FTRS_POWER5,
302 .cpu_user_features = COMMON_USER_POWER5_PLUS,
303 .icache_bsize = 128,
304 .dcache_bsize = 128,
305 .num_pmcs = 6,
306 .oprofile_cpu_type = "ppc64/power5++",
307 .oprofile_type = PPC_OPROFILE_POWER4,
308 .oprofile_mmcra_sihv = MMCRA_SIHV,
309 .oprofile_mmcra_sipr = MMCRA_SIPR,
310 .platform = "power5+",
311 },
297 { /* Power5 GS */ 312 { /* Power5 GS */
298 .pvr_mask = 0xffff0000, 313 .pvr_mask = 0xffff0000,
299 .pvr_value = 0x003b0000, 314 .pvr_value = 0x003b0000,
@@ -1178,8 +1193,8 @@ static struct cpu_spec cpu_specs[] = {
1178 .platform = "ppc440", 1193 .platform = "ppc440",
1179 }, 1194 },
1180 { /* 440SP Rev. A */ 1195 { /* 440SP Rev. A */
1181 .pvr_mask = 0xff000fff, 1196 .pvr_mask = 0xfff00fff,
1182 .pvr_value = 0x53000891, 1197 .pvr_value = 0x53200891,
1183 .cpu_name = "440SP Rev. A", 1198 .cpu_name = "440SP Rev. A",
1184 .cpu_features = CPU_FTRS_44X, 1199 .cpu_features = CPU_FTRS_44X,
1185 .cpu_user_features = COMMON_USER_BOOKE, 1200 .cpu_user_features = COMMON_USER_BOOKE,
@@ -1188,9 +1203,19 @@ static struct cpu_spec cpu_specs[] = {
1188 .platform = "ppc440", 1203 .platform = "ppc440",
1189 }, 1204 },
1190 { /* 440SPe Rev. A */ 1205 { /* 440SPe Rev. A */
1191 .pvr_mask = 0xff000fff, 1206 .pvr_mask = 0xfff00fff,
1192 .pvr_value = 0x53000890, 1207 .pvr_value = 0x53400890,
1193 .cpu_name = "440SPe Rev. A", 1208 .cpu_name = "440SPe Rev. A",
1209 .cpu_features = CPU_FTRS_44X,
1210 .cpu_user_features = COMMON_USER_BOOKE,
1211 .icache_bsize = 32,
1212 .dcache_bsize = 32,
1213 .platform = "ppc440",
1214 },
1215 { /* 440SPe Rev. B */
1216 .pvr_mask = 0xfff00fff,
1217 .pvr_value = 0x53400891,
1218 .cpu_name = "440SPe Rev. B",
1194 .cpu_features = CPU_FTRS_44X, 1219 .cpu_features = CPU_FTRS_44X,
1195 .cpu_user_features = COMMON_USER_BOOKE, 1220 .cpu_user_features = COMMON_USER_BOOKE,
1196 .icache_bsize = 32, 1221 .icache_bsize = 32,
diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
index c897203198b1..7d73a13450b0 100644
--- a/arch/powerpc/kernel/head_32.S
+++ b/arch/powerpc/kernel/head_32.S
@@ -9,7 +9,6 @@
9 * rewritten by Paul Mackerras. 9 * rewritten by Paul Mackerras.
10 * Copyright (C) 1996 Paul Mackerras. 10 * Copyright (C) 1996 Paul Mackerras.
11 * MPC8xx modifications Copyright (C) 1997 Dan Malek (dmalek@jlc.net). 11 * MPC8xx modifications Copyright (C) 1997 Dan Malek (dmalek@jlc.net).
12 * Amiga/APUS changes by Jesper Skov (jskov@cygnus.co.uk).
13 * 12 *
14 * This file contains the low-level support and setup for the 13 * This file contains the low-level support and setup for the
15 * PowerPC platform, including trap and interrupt dispatch. 14 * PowerPC platform, including trap and interrupt dispatch.
@@ -32,10 +31,6 @@
32#include <asm/ppc_asm.h> 31#include <asm/ppc_asm.h>
33#include <asm/asm-offsets.h> 32#include <asm/asm-offsets.h>
34 33
35#ifdef CONFIG_APUS
36#include <asm/amigappc.h>
37#endif
38
39/* 601 only have IBAT; cr0.eq is set on 601 when using this macro */ 34/* 601 only have IBAT; cr0.eq is set on 601 when using this macro */
40#define LOAD_BAT(n, reg, RA, RB) \ 35#define LOAD_BAT(n, reg, RA, RB) \
41 /* see the comment for clear_bats() -- Cort */ \ 36 /* see the comment for clear_bats() -- Cort */ \
@@ -92,11 +87,6 @@ _start:
92 * r4: virtual address of boot_infos_t 87 * r4: virtual address of boot_infos_t
93 * r5: 0 88 * r5: 0
94 * 89 *
95 * APUS
96 * r3: 'APUS'
97 * r4: physical address of memory base
98 * Linux/m68k style BootInfo structure at &_end.
99 *
100 * PREP 90 * PREP
101 * This is jumped to on prep systems right after the kernel is relocated 91 * This is jumped to on prep systems right after the kernel is relocated
102 * to its proper place in memory by the boot loader. The expected layout 92 * to its proper place in memory by the boot loader. The expected layout
@@ -150,14 +140,6 @@ __start:
150 */ 140 */
151 bl early_init 141 bl early_init
152 142
153#ifdef CONFIG_APUS
154/* On APUS the __va/__pa constants need to be set to the correct
155 * values before continuing.
156 */
157 mr r4,r30
158 bl fix_mem_constants
159#endif /* CONFIG_APUS */
160
161/* Switch MMU off, clear BATs and flush TLB. At this point, r3 contains 143/* Switch MMU off, clear BATs and flush TLB. At this point, r3 contains
162 * the physical address we are running at, returned by early_init() 144 * the physical address we are running at, returned by early_init()
163 */ 145 */
@@ -167,7 +149,7 @@ __after_mmu_off:
167 bl flush_tlbs 149 bl flush_tlbs
168 150
169 bl initial_bats 151 bl initial_bats
170#if !defined(CONFIG_APUS) && defined(CONFIG_BOOTX_TEXT) 152#if defined(CONFIG_BOOTX_TEXT)
171 bl setup_disp_bat 153 bl setup_disp_bat
172#endif 154#endif
173 155
@@ -183,7 +165,6 @@ __after_mmu_off:
183#endif /* CONFIG_6xx */ 165#endif /* CONFIG_6xx */
184 166
185 167
186#ifndef CONFIG_APUS
187/* 168/*
188 * We need to run with _start at physical address 0. 169 * We need to run with _start at physical address 0.
189 * On CHRP, we are loaded at 0x10000 since OF on CHRP uses 170 * On CHRP, we are loaded at 0x10000 since OF on CHRP uses
@@ -196,7 +177,6 @@ __after_mmu_off:
196 addis r4,r3,KERNELBASE@h /* current address of _start */ 177 addis r4,r3,KERNELBASE@h /* current address of _start */
197 cmpwi 0,r4,0 /* are we already running at 0? */ 178 cmpwi 0,r4,0 /* are we already running at 0? */
198 bne relocate_kernel 179 bne relocate_kernel
199#endif /* CONFIG_APUS */
200/* 180/*
201 * we now have the 1st 16M of ram mapped with the bats. 181 * we now have the 1st 16M of ram mapped with the bats.
202 * prep needs the mmu to be turned on here, but pmac already has it on. 182 * prep needs the mmu to be turned on here, but pmac already has it on.
@@ -881,85 +861,6 @@ _GLOBAL(copy_and_flush)
881 addi r6,r6,4 861 addi r6,r6,4
882 blr 862 blr
883 863
884#ifdef CONFIG_APUS
885/*
886 * On APUS the physical base address of the kernel is not known at compile
887 * time, which means the __pa/__va constants used are incorrect. In the
888 * __init section is recorded the virtual addresses of instructions using
889 * these constants, so all that has to be done is fix these before
890 * continuing the kernel boot.
891 *
892 * r4 = The physical address of the kernel base.
893 */
894fix_mem_constants:
895 mr r10,r4
896 addis r10,r10,-KERNELBASE@h /* virt_to_phys constant */
897 neg r11,r10 /* phys_to_virt constant */
898
899 lis r12,__vtop_table_begin@h
900 ori r12,r12,__vtop_table_begin@l
901 add r12,r12,r10 /* table begin phys address */
902 lis r13,__vtop_table_end@h
903 ori r13,r13,__vtop_table_end@l
904 add r13,r13,r10 /* table end phys address */
905 subi r12,r12,4
906 subi r13,r13,4
9071: lwzu r14,4(r12) /* virt address of instruction */
908 add r14,r14,r10 /* phys address of instruction */
909 lwz r15,0(r14) /* instruction, now insert top */
910 rlwimi r15,r10,16,16,31 /* half of vp const in low half */
911 stw r15,0(r14) /* of instruction and restore. */
912 dcbst r0,r14 /* write it to memory */
913 sync
914 icbi r0,r14 /* flush the icache line */
915 cmpw r12,r13
916 bne 1b
917 sync /* additional sync needed on g4 */
918 isync
919
920/*
921 * Map the memory where the exception handlers will
922 * be copied to when hash constants have been patched.
923 */
924#ifdef CONFIG_APUS_FAST_EXCEPT
925 lis r8,0xfff0
926#else
927 lis r8,0
928#endif
929 ori r8,r8,0x2 /* 128KB, supervisor */
930 mtspr SPRN_DBAT3U,r8
931 mtspr SPRN_DBAT3L,r8
932
933 lis r12,__ptov_table_begin@h
934 ori r12,r12,__ptov_table_begin@l
935 add r12,r12,r10 /* table begin phys address */
936 lis r13,__ptov_table_end@h
937 ori r13,r13,__ptov_table_end@l
938 add r13,r13,r10 /* table end phys address */
939 subi r12,r12,4
940 subi r13,r13,4
9411: lwzu r14,4(r12) /* virt address of instruction */
942 add r14,r14,r10 /* phys address of instruction */
943 lwz r15,0(r14) /* instruction, now insert top */
944 rlwimi r15,r11,16,16,31 /* half of pv const in low half*/
945 stw r15,0(r14) /* of instruction and restore. */
946 dcbst r0,r14 /* write it to memory */
947 sync
948 icbi r0,r14 /* flush the icache line */
949 cmpw r12,r13
950 bne 1b
951
952 sync /* additional sync needed on g4 */
953 isync /* No speculative loading until now */
954 blr
955
956/***********************************************************************
957 * Please note that on APUS the exception handlers are located at the
958 * physical address 0xfff0000. For this reason, the exception handlers
959 * cannot use relative branches to access the code below.
960 ***********************************************************************/
961#endif /* CONFIG_APUS */
962
963#ifdef CONFIG_SMP 864#ifdef CONFIG_SMP
964#ifdef CONFIG_GEMINI 865#ifdef CONFIG_GEMINI
965 .globl __secondary_start_gemini 866 .globl __secondary_start_gemini
@@ -1135,19 +1036,6 @@ start_here:
1135 bl __save_cpu_setup 1036 bl __save_cpu_setup
1136 bl MMU_init 1037 bl MMU_init
1137 1038
1138#ifdef CONFIG_APUS
1139 /* Copy exception code to exception vector base on APUS. */
1140 lis r4,KERNELBASE@h
1141#ifdef CONFIG_APUS_FAST_EXCEPT
1142 lis r3,0xfff0 /* Copy to 0xfff00000 */
1143#else
1144 lis r3,0 /* Copy to 0x00000000 */
1145#endif
1146 li r5,0x4000 /* # bytes of memory to copy */
1147 li r6,0
1148 bl copy_and_flush /* copy the first 0x4000 bytes */
1149#endif /* CONFIG_APUS */
1150
1151/* 1039/*
1152 * Go back to running unmapped so we can load up new values 1040 * Go back to running unmapped so we can load up new values
1153 * for SDR1 (hash table pointer) and the segment registers 1041 * for SDR1 (hash table pointer) and the segment registers
@@ -1324,11 +1212,7 @@ initial_bats:
1324#else 1212#else
1325 ori r8,r8,2 /* R/W access */ 1213 ori r8,r8,2 /* R/W access */
1326#endif /* CONFIG_SMP */ 1214#endif /* CONFIG_SMP */
1327#ifdef CONFIG_APUS
1328 ori r11,r11,BL_8M<<2|0x2 /* set up 8MB BAT registers for 604 */
1329#else
1330 ori r11,r11,BL_256M<<2|0x2 /* set up BAT registers for 604 */ 1215 ori r11,r11,BL_256M<<2|0x2 /* set up BAT registers for 604 */
1331#endif /* CONFIG_APUS */
1332 1216
1333 mtspr SPRN_DBAT0L,r8 /* N.B. 6xx (not 601) have valid */ 1217 mtspr SPRN_DBAT0L,r8 /* N.B. 6xx (not 601) have valid */
1334 mtspr SPRN_DBAT0U,r11 /* bit in upper BAT register */ 1218 mtspr SPRN_DBAT0U,r11 /* bit in upper BAT register */
@@ -1338,7 +1222,7 @@ initial_bats:
1338 blr 1222 blr
1339 1223
1340 1224
1341#if !defined(CONFIG_APUS) && defined(CONFIG_BOOTX_TEXT) 1225#ifdef CONFIG_BOOTX_TEXT
1342setup_disp_bat: 1226setup_disp_bat:
1343 /* 1227 /*
1344 * setup the display bat prepared for us in prom.c 1228 * setup the display bat prepared for us in prom.c
@@ -1362,7 +1246,7 @@ setup_disp_bat:
13621: mtspr SPRN_IBAT3L,r8 12461: mtspr SPRN_IBAT3L,r8
1363 mtspr SPRN_IBAT3U,r11 1247 mtspr SPRN_IBAT3U,r11
1364 blr 1248 blr
1365#endif /* !defined(CONFIG_APUS) && defined(CONFIG_BOOTX_TEXT) */ 1249#endif /* CONFIG_BOOTX_TEXT */
1366 1250
1367#ifdef CONFIG_8260 1251#ifdef CONFIG_8260
1368/* Jump into the system reset for the rom. 1252/* Jump into the system reset for the rom.
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 1111fcec7673..8cdd48ea4391 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -103,8 +103,8 @@ __secondary_hold_acknowledge:
103 103
104 . = 0x60 104 . = 0x60
105/* 105/*
106 * The following code is used on pSeries to hold secondary processors 106 * The following code is used to hold secondary processors
107 * in a spin loop after they have been freed from OpenFirmware, but 107 * in a spin loop after they have entered the kernel, but
108 * before the bulk of the kernel has been relocated. This code 108 * before the bulk of the kernel has been relocated. This code
109 * is relocated to physical address 0x60 before prom_init is run. 109 * is relocated to physical address 0x60 before prom_init is run.
110 * All of it must fit below the first exception vector at 0x100. 110 * All of it must fit below the first exception vector at 0x100.
diff --git a/arch/powerpc/kernel/io.c b/arch/powerpc/kernel/io.c
index 34ae11494ddc..e31aca9208eb 100644
--- a/arch/powerpc/kernel/io.c
+++ b/arch/powerpc/kernel/io.c
@@ -35,7 +35,7 @@ void _insb(const volatile u8 __iomem *port, void *buf, long count)
35 asm volatile("sync"); 35 asm volatile("sync");
36 do { 36 do {
37 tmp = *port; 37 tmp = *port;
38 asm volatile("eieio"); 38 eieio();
39 *tbuf++ = tmp; 39 *tbuf++ = tmp;
40 } while (--count != 0); 40 } while (--count != 0);
41 asm volatile("twi 0,%0,0; isync" : : "r" (tmp)); 41 asm volatile("twi 0,%0,0; isync" : : "r" (tmp));
@@ -66,7 +66,7 @@ void _insw_ns(const volatile u16 __iomem *port, void *buf, long count)
66 asm volatile("sync"); 66 asm volatile("sync");
67 do { 67 do {
68 tmp = *port; 68 tmp = *port;
69 asm volatile("eieio"); 69 eieio();
70 *tbuf++ = tmp; 70 *tbuf++ = tmp;
71 } while (--count != 0); 71 } while (--count != 0);
72 asm volatile("twi 0,%0,0; isync" : : "r" (tmp)); 72 asm volatile("twi 0,%0,0; isync" : : "r" (tmp));
@@ -97,7 +97,7 @@ void _insl_ns(const volatile u32 __iomem *port, void *buf, long count)
97 asm volatile("sync"); 97 asm volatile("sync");
98 do { 98 do {
99 tmp = *port; 99 tmp = *port;
100 asm volatile("eieio"); 100 eieio();
101 *tbuf++ = tmp; 101 *tbuf++ = tmp;
102 } while (--count != 0); 102 } while (--count != 0);
103 asm volatile("twi 0,%0,0; isync" : : "r" (tmp)); 103 asm volatile("twi 0,%0,0; isync" : : "r" (tmp));
@@ -155,21 +155,21 @@ void _memcpy_fromio(void *dest, const volatile void __iomem *src,
155 __asm__ __volatile__ ("sync" : : : "memory"); 155 __asm__ __volatile__ ("sync" : : : "memory");
156 while(n && (!IO_CHECK_ALIGN(vsrc, 4) || !IO_CHECK_ALIGN(dest, 4))) { 156 while(n && (!IO_CHECK_ALIGN(vsrc, 4) || !IO_CHECK_ALIGN(dest, 4))) {
157 *((u8 *)dest) = *((volatile u8 *)vsrc); 157 *((u8 *)dest) = *((volatile u8 *)vsrc);
158 __asm__ __volatile__ ("eieio" : : : "memory"); 158 eieio();
159 vsrc++; 159 vsrc++;
160 dest++; 160 dest++;
161 n--; 161 n--;
162 } 162 }
163 while(n > 4) { 163 while(n > 4) {
164 *((u32 *)dest) = *((volatile u32 *)vsrc); 164 *((u32 *)dest) = *((volatile u32 *)vsrc);
165 __asm__ __volatile__ ("eieio" : : : "memory"); 165 eieio();
166 vsrc += 4; 166 vsrc += 4;
167 dest += 4; 167 dest += 4;
168 n -= 4; 168 n -= 4;
169 } 169 }
170 while(n) { 170 while(n) {
171 *((u8 *)dest) = *((volatile u8 *)vsrc); 171 *((u8 *)dest) = *((volatile u8 *)vsrc);
172 __asm__ __volatile__ ("eieio" : : : "memory"); 172 eieio();
173 vsrc++; 173 vsrc++;
174 dest++; 174 dest++;
175 n--; 175 n--;
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index c2b84c64db20..2fc87862146c 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -7,7 +7,6 @@
7 * Copyright (C) 1996-2001 Cort Dougan 7 * Copyright (C) 1996-2001 Cort Dougan
8 * Adapted for Power Macintosh by Paul Mackerras 8 * Adapted for Power Macintosh by Paul Mackerras
9 * Copyright (C) 1996 Paul Mackerras (paulus@cs.anu.edu.au) 9 * Copyright (C) 1996 Paul Mackerras (paulus@cs.anu.edu.au)
10 * Amiga/APUS changes by Jesper Skov (jskov@cygnus.co.uk).
11 * 10 *
12 * This program is free software; you can redistribute it and/or 11 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License 12 * modify it under the terms of the GNU General Public License
@@ -337,7 +336,8 @@ void do_IRQ(struct pt_regs *regs)
337 336
338void __init init_IRQ(void) 337void __init init_IRQ(void)
339{ 338{
340 ppc_md.init_IRQ(); 339 if (ppc_md.init_IRQ)
340 ppc_md.init_IRQ();
341#ifdef CONFIG_PPC64 341#ifdef CONFIG_PPC64
342 irq_ctx_init(); 342 irq_ctx_init();
343#endif 343#endif
@@ -597,6 +597,49 @@ static void irq_radix_rdunlock(unsigned long flags)
597 local_irq_restore(flags); 597 local_irq_restore(flags);
598} 598}
599 599
600static int irq_setup_virq(struct irq_host *host, unsigned int virq,
601 irq_hw_number_t hwirq)
602{
603 /* Clear IRQ_NOREQUEST flag */
604 get_irq_desc(virq)->status &= ~IRQ_NOREQUEST;
605
606 /* map it */
607 smp_wmb();
608 irq_map[virq].hwirq = hwirq;
609 smp_mb();
610
611 if (host->ops->map(host, virq, hwirq)) {
612 pr_debug("irq: -> mapping failed, freeing\n");
613 irq_free_virt(virq, 1);
614 return -1;
615 }
616
617 return 0;
618}
619
620unsigned int irq_create_direct_mapping(struct irq_host *host)
621{
622 unsigned int virq;
623
624 if (host == NULL)
625 host = irq_default_host;
626
627 BUG_ON(host == NULL);
628 WARN_ON(host->revmap_type != IRQ_HOST_MAP_NOMAP);
629
630 virq = irq_alloc_virt(host, 1, 0);
631 if (virq == NO_IRQ) {
632 pr_debug("irq: create_direct virq allocation failed\n");
633 return NO_IRQ;
634 }
635
636 pr_debug("irq: create_direct obtained virq %d\n", virq);
637
638 if (irq_setup_virq(host, virq, virq))
639 return NO_IRQ;
640
641 return virq;
642}
600 643
601unsigned int irq_create_mapping(struct irq_host *host, 644unsigned int irq_create_mapping(struct irq_host *host,
602 irq_hw_number_t hwirq) 645 irq_hw_number_t hwirq)
@@ -645,18 +688,9 @@ unsigned int irq_create_mapping(struct irq_host *host,
645 } 688 }
646 pr_debug("irq: -> obtained virq %d\n", virq); 689 pr_debug("irq: -> obtained virq %d\n", virq);
647 690
648 /* Clear IRQ_NOREQUEST flag */ 691 if (irq_setup_virq(host, virq, hwirq))
649 get_irq_desc(virq)->status &= ~IRQ_NOREQUEST;
650
651 /* map it */
652 smp_wmb();
653 irq_map[virq].hwirq = hwirq;
654 smp_mb();
655 if (host->ops->map(host, virq, hwirq)) {
656 pr_debug("irq: -> mapping failed, freeing\n");
657 irq_free_virt(virq, 1);
658 return NO_IRQ; 692 return NO_IRQ;
659 } 693
660 return virq; 694 return virq;
661} 695}
662EXPORT_SYMBOL_GPL(irq_create_mapping); 696EXPORT_SYMBOL_GPL(irq_create_mapping);
diff --git a/arch/powerpc/kernel/isa-bridge.c b/arch/powerpc/kernel/isa-bridge.c
new file mode 100644
index 000000000000..f0f49d1be3d5
--- /dev/null
+++ b/arch/powerpc/kernel/isa-bridge.c
@@ -0,0 +1,271 @@
1/*
2 * Routines for tracking a legacy ISA bridge
3 *
4 * Copyrigh 2007 Benjamin Herrenschmidt <benh@kernel.crashing.org>, IBM Corp.
5 *
6 * Some bits and pieces moved over from pci_64.c
7 *
8 * Copyrigh 2003 Anton Blanchard <anton@au.ibm.com>, IBM Corp.
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version
13 * 2 of the License, or (at your option) any later version.
14 */
15
16#define DEBUG
17
18#include <linux/kernel.h>
19#include <linux/pci.h>
20#include <linux/string.h>
21#include <linux/init.h>
22#include <linux/mm.h>
23#include <linux/notifier.h>
24
25#include <asm/processor.h>
26#include <asm/io.h>
27#include <asm/prom.h>
28#include <asm/pci-bridge.h>
29#include <asm/machdep.h>
30#include <asm/ppc-pci.h>
31#include <asm/firmware.h>
32
33unsigned long isa_io_base; /* NULL if no ISA bus */
34EXPORT_SYMBOL(isa_io_base);
35
36/* Cached ISA bridge dev. */
37static struct device_node *isa_bridge_devnode;
38struct pci_dev *isa_bridge_pcidev;
39EXPORT_SYMBOL_GPL(isa_bridge_pcidev);
40
41#define ISA_SPACE_MASK 0x1
42#define ISA_SPACE_IO 0x1
43
44static void __devinit pci_process_ISA_OF_ranges(struct device_node *isa_node,
45 unsigned long phb_io_base_phys)
46{
47 /* We should get some saner parsing here and remove these structs */
48 struct pci_address {
49 u32 a_hi;
50 u32 a_mid;
51 u32 a_lo;
52 };
53
54 struct isa_address {
55 u32 a_hi;
56 u32 a_lo;
57 };
58
59 struct isa_range {
60 struct isa_address isa_addr;
61 struct pci_address pci_addr;
62 unsigned int size;
63 };
64
65 const struct isa_range *range;
66 unsigned long pci_addr;
67 unsigned int isa_addr;
68 unsigned int size;
69 int rlen = 0;
70
71 range = of_get_property(isa_node, "ranges", &rlen);
72 if (range == NULL || (rlen < sizeof(struct isa_range)))
73 goto inval_range;
74
75 /* From "ISA Binding to 1275"
76 * The ranges property is laid out as an array of elements,
77 * each of which comprises:
78 * cells 0 - 1: an ISA address
79 * cells 2 - 4: a PCI address
80 * (size depending on dev->n_addr_cells)
81 * cell 5: the size of the range
82 */
83 if ((range->isa_addr.a_hi && ISA_SPACE_MASK) != ISA_SPACE_IO) {
84 range++;
85 rlen -= sizeof(struct isa_range);
86 if (rlen < sizeof(struct isa_range))
87 goto inval_range;
88 }
89 if ((range->isa_addr.a_hi && ISA_SPACE_MASK) != ISA_SPACE_IO)
90 goto inval_range;
91
92 isa_addr = range->isa_addr.a_lo;
93 pci_addr = (unsigned long) range->pci_addr.a_mid << 32 |
94 range->pci_addr.a_lo;
95
96 /* Assume these are both zero. Note: We could fix that and
97 * do a proper parsing instead ... oh well, that will do for
98 * now as nobody uses fancy mappings for ISA bridges
99 */
100 if ((pci_addr != 0) || (isa_addr != 0)) {
101 printk(KERN_ERR "unexpected isa to pci mapping: %s\n",
102 __FUNCTION__);
103 return;
104 }
105
106 /* Align size and make sure it's cropped to 64K */
107 size = PAGE_ALIGN(range->size);
108 if (size > 0x10000)
109 size = 0x10000;
110
111 printk(KERN_ERR "no ISA IO ranges or unexpected isa range,"
112 "mapping 64k\n");
113
114 __ioremap_at(phb_io_base_phys, (void *)ISA_IO_BASE,
115 size, _PAGE_NO_CACHE|_PAGE_GUARDED);
116 return;
117
118inval_range:
119 printk(KERN_ERR "no ISA IO ranges or unexpected isa range,"
120 "mapping 64k\n");
121 __ioremap_at(phb_io_base_phys, (void *)ISA_IO_BASE,
122 0x10000, _PAGE_NO_CACHE|_PAGE_GUARDED);
123}
124
125
126/**
127 * isa_bridge_find_early - Find and map the ISA IO space early before
128 * main PCI discovery. This is optionally called by
129 * the arch code when adding PCI PHBs to get early
130 * access to ISA IO ports
131 */
132void __init isa_bridge_find_early(struct pci_controller *hose)
133{
134 struct device_node *np, *parent = NULL, *tmp;
135
136 /* If we already have an ISA bridge, bail off */
137 if (isa_bridge_devnode != NULL)
138 return;
139
140 /* For each "isa" node in the system. Note : we do a search by
141 * type and not by name. It might be better to do by name but that's
142 * what the code used to do and I don't want to break too much at
143 * once. We can look into changing that separately
144 */
145 for_each_node_by_type(np, "isa") {
146 /* Look for our hose being a parent */
147 for (parent = of_get_parent(np); parent;) {
148 if (parent == hose->arch_data) {
149 of_node_put(parent);
150 break;
151 }
152 tmp = parent;
153 parent = of_get_parent(parent);
154 of_node_put(tmp);
155 }
156 if (parent != NULL)
157 break;
158 }
159 if (np == NULL)
160 return;
161 isa_bridge_devnode = np;
162
163 /* Now parse the "ranges" property and setup the ISA mapping */
164 pci_process_ISA_OF_ranges(np, hose->io_base_phys);
165
166 /* Set the global ISA io base to indicate we have an ISA bridge */
167 isa_io_base = ISA_IO_BASE;
168
169 pr_debug("ISA bridge (early) is %s\n", np->full_name);
170}
171
172/**
173 * isa_bridge_find_late - Find and map the ISA IO space upon discovery of
174 * a new ISA bridge
175 */
176static void __devinit isa_bridge_find_late(struct pci_dev *pdev,
177 struct device_node *devnode)
178{
179 struct pci_controller *hose = pci_bus_to_host(pdev->bus);
180
181 /* Store ISA device node and PCI device */
182 isa_bridge_devnode = of_node_get(devnode);
183 isa_bridge_pcidev = pdev;
184
185 /* Now parse the "ranges" property and setup the ISA mapping */
186 pci_process_ISA_OF_ranges(devnode, hose->io_base_phys);
187
188 /* Set the global ISA io base to indicate we have an ISA bridge */
189 isa_io_base = ISA_IO_BASE;
190
191 pr_debug("ISA bridge (late) is %s on %s\n",
192 devnode->full_name, pci_name(pdev));
193}
194
195/**
196 * isa_bridge_remove - Remove/unmap an ISA bridge
197 */
198static void isa_bridge_remove(void)
199{
200 pr_debug("ISA bridge removed !\n");
201
202 /* Clear the global ISA io base to indicate that we have no more
203 * ISA bridge. Note that drivers don't quite handle that, though
204 * we should probably do something about it. But do we ever really
205 * have ISA bridges being removed on machines using legacy devices ?
206 */
207 isa_io_base = ISA_IO_BASE;
208
209 /* Clear references to the bridge */
210 of_node_put(isa_bridge_devnode);
211 isa_bridge_devnode = NULL;
212 isa_bridge_pcidev = NULL;
213
214 /* Unmap the ISA area */
215 __iounmap_at((void *)ISA_IO_BASE, 0x10000);
216}
217
218/**
219 * isa_bridge_notify - Get notified of PCI devices addition/removal
220 */
221static int __devinit isa_bridge_notify(struct notifier_block *nb,
222 unsigned long action, void *data)
223{
224 struct device *dev = data;
225 struct pci_dev *pdev = to_pci_dev(dev);
226 struct device_node *devnode = pci_device_to_OF_node(pdev);
227
228 switch(action) {
229 case BUS_NOTIFY_ADD_DEVICE:
230 /* Check if we have an early ISA device, without PCI dev */
231 if (isa_bridge_devnode && isa_bridge_devnode == devnode &&
232 !isa_bridge_pcidev) {
233 pr_debug("ISA bridge PCI attached: %s\n",
234 pci_name(pdev));
235 isa_bridge_pcidev = pdev;
236 }
237
238 /* Check if we have no ISA device, and this happens to be one,
239 * register it as such if it has an OF device
240 */
241 if (!isa_bridge_devnode && devnode && devnode->type &&
242 !strcmp(devnode->type, "isa"))
243 isa_bridge_find_late(pdev, devnode);
244
245 return 0;
246 case BUS_NOTIFY_DEL_DEVICE:
247 /* Check if this our existing ISA device */
248 if (pdev == isa_bridge_pcidev ||
249 (devnode && devnode == isa_bridge_devnode))
250 isa_bridge_remove();
251 return 0;
252 }
253 return 0;
254}
255
256static struct notifier_block isa_bridge_notifier = {
257 .notifier_call = isa_bridge_notify
258};
259
260/**
261 * isa_bridge_init - register to be notified of ISA bridge addition/removal
262 *
263 */
264static int __init isa_bridge_init(void)
265{
266 if (firmware_has_feature(FW_FEATURE_ISERIES))
267 return 0;
268 bus_register_notifier(&pci_bus_type, &isa_bridge_notifier);
269 return 0;
270}
271arch_initcall(isa_bridge_init);
diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index 98decf8ebff4..e708ab7ca9e8 100644
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -392,7 +392,7 @@ BEGIN_FTR_SECTION
392 mtspr SPRN_L1CSR0,r3 392 mtspr SPRN_L1CSR0,r3
393 isync 393 isync
394 blr 394 blr
395END_FTR_SECTION_IFCLR(CPU_FTR_SPLIT_ID_CACHE) 395END_FTR_SECTION_IFSET(CPU_FTR_UNIFIED_ID_CACHE)
396 mfspr r3,SPRN_L1CSR1 396 mfspr r3,SPRN_L1CSR1
397 ori r3,r3,L1CSR1_ICFI|L1CSR1_ICLFR 397 ori r3,r3,L1CSR1_ICFI|L1CSR1_ICLFR
398 mtspr SPRN_L1CSR1,r3 398 mtspr SPRN_L1CSR1,r3
@@ -419,7 +419,7 @@ END_FTR_SECTION_IFCLR(CPU_FTR_SPLIT_ID_CACHE)
419_GLOBAL(__flush_icache_range) 419_GLOBAL(__flush_icache_range)
420BEGIN_FTR_SECTION 420BEGIN_FTR_SECTION
421 blr /* for 601, do nothing */ 421 blr /* for 601, do nothing */
422END_FTR_SECTION_IFCLR(CPU_FTR_SPLIT_ID_CACHE) 422END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE)
423 li r5,L1_CACHE_BYTES-1 423 li r5,L1_CACHE_BYTES-1
424 andc r3,r3,r5 424 andc r3,r3,r5
425 subf r4,r3,r4 425 subf r4,r3,r4
@@ -514,8 +514,8 @@ _GLOBAL(invalidate_dcache_range)
514 */ 514 */
515_GLOBAL(__flush_dcache_icache) 515_GLOBAL(__flush_dcache_icache)
516BEGIN_FTR_SECTION 516BEGIN_FTR_SECTION
517 blr /* for 601, do nothing */ 517 blr
518END_FTR_SECTION_IFCLR(CPU_FTR_SPLIT_ID_CACHE) 518END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE)
519 rlwinm r3,r3,0,0,19 /* Get page base address */ 519 rlwinm r3,r3,0,0,19 /* Get page base address */
520 li r4,4096/L1_CACHE_BYTES /* Number of lines in a page */ 520 li r4,4096/L1_CACHE_BYTES /* Number of lines in a page */
521 mtctr r4 521 mtctr r4
@@ -543,7 +543,7 @@ END_FTR_SECTION_IFCLR(CPU_FTR_SPLIT_ID_CACHE)
543_GLOBAL(__flush_dcache_icache_phys) 543_GLOBAL(__flush_dcache_icache_phys)
544BEGIN_FTR_SECTION 544BEGIN_FTR_SECTION
545 blr /* for 601, do nothing */ 545 blr /* for 601, do nothing */
546END_FTR_SECTION_IFCLR(CPU_FTR_SPLIT_ID_CACHE) 546END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE)
547 mfmsr r10 547 mfmsr r10
548 rlwinm r0,r10,0,28,26 /* clear DR */ 548 rlwinm r0,r10,0,28,26 /* clear DR */
549 mtmsr r0 549 mtmsr r0
diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index 519861da0423..bbb3ba54c51c 100644
--- a/arch/powerpc/kernel/misc_64.S
+++ b/arch/powerpc/kernel/misc_64.S
@@ -646,6 +646,19 @@ _GLOBAL(kexec_sequence)
646 /* turn off mmu */ 646 /* turn off mmu */
647 bl real_mode 647 bl real_mode
648 648
649 /* copy 0x100 bytes starting at start to 0 */
650 li r3,0
651 mr r4,r30 /* start, aka phys mem offset */
652 li r5,0x100
653 li r6,0
654 bl .copy_and_flush /* (dest, src, copy limit, start offset) */
6551: /* assume normal blr return */
656
657 /* release other cpus to the new kernel secondary start at 0x60 */
658 mflr r5
659 li r6,1
660 stw r6,kexec_flag-1b(5)
661
649 /* clear out hardware hash page table and tlb */ 662 /* clear out hardware hash page table and tlb */
650 ld r5,0(r27) /* deref function descriptor */ 663 ld r5,0(r27) /* deref function descriptor */
651 mtctr r5 664 mtctr r5
@@ -676,19 +689,6 @@ _GLOBAL(kexec_sequence)
676 * are the boot cpu ????? 689 * are the boot cpu ?????
677 * other device tree differences (prop sizes, va vs pa, etc)... 690 * other device tree differences (prop sizes, va vs pa, etc)...
678 */ 691 */
679
680 /* copy 0x100 bytes starting at start to 0 */
681 li r3,0
682 mr r4,r30
683 li r5,0x100
684 li r6,0
685 bl .copy_and_flush /* (dest, src, copy limit, start offset) */
6861: /* assume normal blr return */
687
688 /* release other cpus to the new kernel secondary start at 0x60 */
689 mflr r5
690 li r6,1
691 stw r6,kexec_flag-1b(5)
692 mr r3,r25 # my phys cpu 692 mr r3,r25 # my phys cpu
693 mr r4,r30 # start, aka phys mem offset 693 mr r4,r30 # start, aka phys mem offset
694 mtlr 4 694 mtlr 4
diff --git a/arch/powerpc/kernel/of_platform.c b/arch/powerpc/kernel/of_platform.c
index d454f61c9c7c..9536ed7f247c 100644
--- a/arch/powerpc/kernel/of_platform.c
+++ b/arch/powerpc/kernel/of_platform.c
@@ -427,14 +427,6 @@ static int __devinit of_pci_phb_probe(struct of_device *dev,
427 /* Process "ranges" property */ 427 /* Process "ranges" property */
428 pci_process_bridge_OF_ranges(phb, dev->node, 0); 428 pci_process_bridge_OF_ranges(phb, dev->node, 0);
429 429
430 /* Setup IO space. We use the non-dynamic version of that code here,
431 * which doesn't quite support unplugging. Next kernel release will
432 * have a better fix for this.
433 * Note also that we don't do ISA, this will also be fixed with a
434 * more massive rework.
435 */
436 pci_setup_phb_io(phb, pci_io_base == 0);
437
438 /* Init pci_dn data structures */ 430 /* Init pci_dn data structures */
439 pci_devs_phb_init_dynamic(phb); 431 pci_devs_phb_init_dynamic(phb);
440 432
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
new file mode 100644
index 000000000000..faf5ef3e90d0
--- /dev/null
+++ b/arch/powerpc/kernel/pci-common.c
@@ -0,0 +1,454 @@
1/*
2 * Contains common pci routines for ALL ppc platform
3 * (based on pci_32.c and pci_64.c)
4 *
5 * Port for PPC64 David Engebretsen, IBM Corp.
6 * Contains common pci routines for ppc64 platform, pSeries and iSeries brands.
7 *
8 * Copyright (C) 2003 Anton Blanchard <anton@au.ibm.com>, IBM
9 * Rework, based on alpha PCI code.
10 *
11 * Common pmac/prep/chrp pci routines. -- Cort
12 *
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * as published by the Free Software Foundation; either version
16 * 2 of the License, or (at your option) any later version.
17 */
18
19#undef DEBUG
20
21#include <linux/kernel.h>
22#include <linux/pci.h>
23#include <linux/string.h>
24#include <linux/init.h>
25#include <linux/bootmem.h>
26#include <linux/mm.h>
27#include <linux/list.h>
28#include <linux/syscalls.h>
29#include <linux/irq.h>
30#include <linux/vmalloc.h>
31
32#include <asm/processor.h>
33#include <asm/io.h>
34#include <asm/prom.h>
35#include <asm/pci-bridge.h>
36#include <asm/byteorder.h>
37#include <asm/machdep.h>
38#include <asm/ppc-pci.h>
39#include <asm/firmware.h>
40
41#ifdef DEBUG
42#include <asm/udbg.h>
43#define DBG(fmt...) printk(fmt)
44#else
45#define DBG(fmt...)
46#endif
47
48static DEFINE_SPINLOCK(hose_spinlock);
49
50/* XXX kill that some day ... */
51int global_phb_number; /* Global phb counter */
52
53extern struct list_head hose_list;
54
55/*
56 * pci_controller(phb) initialized common variables.
57 */
58static void __devinit pci_setup_pci_controller(struct pci_controller *hose)
59{
60 memset(hose, 0, sizeof(struct pci_controller));
61
62 spin_lock(&hose_spinlock);
63 hose->global_number = global_phb_number++;
64 list_add_tail(&hose->list_node, &hose_list);
65 spin_unlock(&hose_spinlock);
66}
67
68struct pci_controller * pcibios_alloc_controller(struct device_node *dev)
69{
70 struct pci_controller *phb;
71
72 if (mem_init_done)
73 phb = kmalloc(sizeof(struct pci_controller), GFP_KERNEL);
74 else
75 phb = alloc_bootmem(sizeof (struct pci_controller));
76 if (phb == NULL)
77 return NULL;
78 pci_setup_pci_controller(phb);
79 phb->arch_data = dev;
80 phb->is_dynamic = mem_init_done;
81#ifdef CONFIG_PPC64
82 if (dev) {
83 int nid = of_node_to_nid(dev);
84
85 if (nid < 0 || !node_online(nid))
86 nid = -1;
87
88 PHB_SET_NODE(phb, nid);
89 }
90#endif
91 return phb;
92}
93
94void pcibios_free_controller(struct pci_controller *phb)
95{
96 spin_lock(&hose_spinlock);
97 list_del(&phb->list_node);
98 spin_unlock(&hose_spinlock);
99
100 if (phb->is_dynamic)
101 kfree(phb);
102}
103
104/*
105 * Return the domain number for this bus.
106 */
107int pci_domain_nr(struct pci_bus *bus)
108{
109 if (firmware_has_feature(FW_FEATURE_ISERIES))
110 return 0;
111 else {
112 struct pci_controller *hose = pci_bus_to_host(bus);
113
114 return hose->global_number;
115 }
116}
117
118EXPORT_SYMBOL(pci_domain_nr);
119
120#ifdef CONFIG_PPC_OF
121
122/* This routine is meant to be used early during boot, when the
123 * PCI bus numbers have not yet been assigned, and you need to
124 * issue PCI config cycles to an OF device.
125 * It could also be used to "fix" RTAS config cycles if you want
126 * to set pci_assign_all_buses to 1 and still use RTAS for PCI
127 * config cycles.
128 */
129struct pci_controller* pci_find_hose_for_OF_device(struct device_node* node)
130{
131 if (!have_of)
132 return NULL;
133 while(node) {
134 struct pci_controller *hose, *tmp;
135 list_for_each_entry_safe(hose, tmp, &hose_list, list_node)
136 if (hose->arch_data == node)
137 return hose;
138 node = node->parent;
139 }
140 return NULL;
141}
142
143static ssize_t pci_show_devspec(struct device *dev,
144 struct device_attribute *attr, char *buf)
145{
146 struct pci_dev *pdev;
147 struct device_node *np;
148
149 pdev = to_pci_dev (dev);
150 np = pci_device_to_OF_node(pdev);
151 if (np == NULL || np->full_name == NULL)
152 return 0;
153 return sprintf(buf, "%s", np->full_name);
154}
155static DEVICE_ATTR(devspec, S_IRUGO, pci_show_devspec, NULL);
156#endif /* CONFIG_PPC_OF */
157
158/* Add sysfs properties */
159void pcibios_add_platform_entries(struct pci_dev *pdev)
160{
161#ifdef CONFIG_PPC_OF
162 device_create_file(&pdev->dev, &dev_attr_devspec);
163#endif /* CONFIG_PPC_OF */
164}
165
166char __init *pcibios_setup(char *str)
167{
168 return str;
169}
170
171/*
172 * Reads the interrupt pin to determine if interrupt is use by card.
173 * If the interrupt is used, then gets the interrupt line from the
174 * openfirmware and sets it in the pci_dev and pci_config line.
175 */
176int pci_read_irq_line(struct pci_dev *pci_dev)
177{
178 struct of_irq oirq;
179 unsigned int virq;
180
181 DBG("Try to map irq for %s...\n", pci_name(pci_dev));
182
183#ifdef DEBUG
184 memset(&oirq, 0xff, sizeof(oirq));
185#endif
186 /* Try to get a mapping from the device-tree */
187 if (of_irq_map_pci(pci_dev, &oirq)) {
188 u8 line, pin;
189
190 /* If that fails, lets fallback to what is in the config
191 * space and map that through the default controller. We
192 * also set the type to level low since that's what PCI
193 * interrupts are. If your platform does differently, then
194 * either provide a proper interrupt tree or don't use this
195 * function.
196 */
197 if (pci_read_config_byte(pci_dev, PCI_INTERRUPT_PIN, &pin))
198 return -1;
199 if (pin == 0)
200 return -1;
201 if (pci_read_config_byte(pci_dev, PCI_INTERRUPT_LINE, &line) ||
202 line == 0xff) {
203 return -1;
204 }
205 DBG(" -> no map ! Using irq line %d from PCI config\n", line);
206
207 virq = irq_create_mapping(NULL, line);
208 if (virq != NO_IRQ)
209 set_irq_type(virq, IRQ_TYPE_LEVEL_LOW);
210 } else {
211 DBG(" -> got one, spec %d cells (0x%08x 0x%08x...) on %s\n",
212 oirq.size, oirq.specifier[0], oirq.specifier[1],
213 oirq.controller->full_name);
214
215 virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
216 oirq.size);
217 }
218 if(virq == NO_IRQ) {
219 DBG(" -> failed to map !\n");
220 return -1;
221 }
222
223 DBG(" -> mapped to linux irq %d\n", virq);
224
225 pci_dev->irq = virq;
226
227 return 0;
228}
229EXPORT_SYMBOL(pci_read_irq_line);
230
231/*
232 * Platform support for /proc/bus/pci/X/Y mmap()s,
233 * modelled on the sparc64 implementation by Dave Miller.
234 * -- paulus.
235 */
236
237/*
238 * Adjust vm_pgoff of VMA such that it is the physical page offset
239 * corresponding to the 32-bit pci bus offset for DEV requested by the user.
240 *
241 * Basically, the user finds the base address for his device which he wishes
242 * to mmap. They read the 32-bit value from the config space base register,
243 * add whatever PAGE_SIZE multiple offset they wish, and feed this into the
244 * offset parameter of mmap on /proc/bus/pci/XXX for that device.
245 *
246 * Returns negative error code on failure, zero on success.
247 */
248static struct resource *__pci_mmap_make_offset(struct pci_dev *dev,
249 resource_size_t *offset,
250 enum pci_mmap_state mmap_state)
251{
252 struct pci_controller *hose = pci_bus_to_host(dev->bus);
253 unsigned long io_offset = 0;
254 int i, res_bit;
255
256 if (hose == 0)
257 return NULL; /* should never happen */
258
259 /* If memory, add on the PCI bridge address offset */
260 if (mmap_state == pci_mmap_mem) {
261#if 0 /* See comment in pci_resource_to_user() for why this is disabled */
262 *offset += hose->pci_mem_offset;
263#endif
264 res_bit = IORESOURCE_MEM;
265 } else {
266 io_offset = (unsigned long)hose->io_base_virt - _IO_BASE;
267 *offset += io_offset;
268 res_bit = IORESOURCE_IO;
269 }
270
271 /*
272 * Check that the offset requested corresponds to one of the
273 * resources of the device.
274 */
275 for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
276 struct resource *rp = &dev->resource[i];
277 int flags = rp->flags;
278
279 /* treat ROM as memory (should be already) */
280 if (i == PCI_ROM_RESOURCE)
281 flags |= IORESOURCE_MEM;
282
283 /* Active and same type? */
284 if ((flags & res_bit) == 0)
285 continue;
286
287 /* In the range of this resource? */
288 if (*offset < (rp->start & PAGE_MASK) || *offset > rp->end)
289 continue;
290
291 /* found it! construct the final physical address */
292 if (mmap_state == pci_mmap_io)
293 *offset += hose->io_base_phys - io_offset;
294 return rp;
295 }
296
297 return NULL;
298}
299
300/*
301 * Set vm_page_prot of VMA, as appropriate for this architecture, for a pci
302 * device mapping.
303 */
304static pgprot_t __pci_mmap_set_pgprot(struct pci_dev *dev, struct resource *rp,
305 pgprot_t protection,
306 enum pci_mmap_state mmap_state,
307 int write_combine)
308{
309 unsigned long prot = pgprot_val(protection);
310
311 /* Write combine is always 0 on non-memory space mappings. On
312 * memory space, if the user didn't pass 1, we check for a
313 * "prefetchable" resource. This is a bit hackish, but we use
314 * this to workaround the inability of /sysfs to provide a write
315 * combine bit
316 */
317 if (mmap_state != pci_mmap_mem)
318 write_combine = 0;
319 else if (write_combine == 0) {
320 if (rp->flags & IORESOURCE_PREFETCH)
321 write_combine = 1;
322 }
323
324 /* XXX would be nice to have a way to ask for write-through */
325 prot |= _PAGE_NO_CACHE;
326 if (write_combine)
327 prot &= ~_PAGE_GUARDED;
328 else
329 prot |= _PAGE_GUARDED;
330
331 return __pgprot(prot);
332}
333
334/*
335 * This one is used by /dev/mem and fbdev who have no clue about the
336 * PCI device, it tries to find the PCI device first and calls the
337 * above routine
338 */
339pgprot_t pci_phys_mem_access_prot(struct file *file,
340 unsigned long pfn,
341 unsigned long size,
342 pgprot_t protection)
343{
344 struct pci_dev *pdev = NULL;
345 struct resource *found = NULL;
346 unsigned long prot = pgprot_val(protection);
347 unsigned long offset = pfn << PAGE_SHIFT;
348 int i;
349
350 if (page_is_ram(pfn))
351 return __pgprot(prot);
352
353 prot |= _PAGE_NO_CACHE | _PAGE_GUARDED;
354
355 for_each_pci_dev(pdev) {
356 for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
357 struct resource *rp = &pdev->resource[i];
358 int flags = rp->flags;
359
360 /* Active and same type? */
361 if ((flags & IORESOURCE_MEM) == 0)
362 continue;
363 /* In the range of this resource? */
364 if (offset < (rp->start & PAGE_MASK) ||
365 offset > rp->end)
366 continue;
367 found = rp;
368 break;
369 }
370 if (found)
371 break;
372 }
373 if (found) {
374 if (found->flags & IORESOURCE_PREFETCH)
375 prot &= ~_PAGE_GUARDED;
376 pci_dev_put(pdev);
377 }
378
379 DBG("non-PCI map for %lx, prot: %lx\n", offset, prot);
380
381 return __pgprot(prot);
382}
383
384
385/*
386 * Perform the actual remap of the pages for a PCI device mapping, as
387 * appropriate for this architecture. The region in the process to map
388 * is described by vm_start and vm_end members of VMA, the base physical
389 * address is found in vm_pgoff.
390 * The pci device structure is provided so that architectures may make mapping
391 * decisions on a per-device or per-bus basis.
392 *
393 * Returns a negative error code on failure, zero on success.
394 */
395int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
396 enum pci_mmap_state mmap_state, int write_combine)
397{
398 resource_size_t offset = vma->vm_pgoff << PAGE_SHIFT;
399 struct resource *rp;
400 int ret;
401
402 rp = __pci_mmap_make_offset(dev, &offset, mmap_state);
403 if (rp == NULL)
404 return -EINVAL;
405
406 vma->vm_pgoff = offset >> PAGE_SHIFT;
407 vma->vm_page_prot = __pci_mmap_set_pgprot(dev, rp,
408 vma->vm_page_prot,
409 mmap_state, write_combine);
410
411 ret = remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
412 vma->vm_end - vma->vm_start, vma->vm_page_prot);
413
414 return ret;
415}
416
417void pci_resource_to_user(const struct pci_dev *dev, int bar,
418 const struct resource *rsrc,
419 resource_size_t *start, resource_size_t *end)
420{
421 struct pci_controller *hose = pci_bus_to_host(dev->bus);
422 resource_size_t offset = 0;
423
424 if (hose == NULL)
425 return;
426
427 if (rsrc->flags & IORESOURCE_IO)
428 offset = (unsigned long)hose->io_base_virt - _IO_BASE;
429
430 /* We pass a fully fixed up address to userland for MMIO instead of
431 * a BAR value because X is lame and expects to be able to use that
432 * to pass to /dev/mem !
433 *
434 * That means that we'll have potentially 64 bits values where some
435 * userland apps only expect 32 (like X itself since it thinks only
436 * Sparc has 64 bits MMIO) but if we don't do that, we break it on
437 * 32 bits CHRPs :-(
438 *
439 * Hopefully, the sysfs insterface is immune to that gunk. Once X
440 * has been fixed (and the fix spread enough), we can re-enable the
441 * 2 lines below and pass down a BAR value to userland. In that case
442 * we'll also have to re-enable the matching code in
443 * __pci_mmap_make_offset().
444 *
445 * BenH.
446 */
447#if 0
448 else if (rsrc->flags & IORESOURCE_MEM)
449 offset = hose->pci_mem_offset;
450#endif
451
452 *start = rsrc->start - offset;
453 *end = rsrc->end - offset;
454}
diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c
index 86982112b0dd..0adf077f3f3a 100644
--- a/arch/powerpc/kernel/pci_32.c
+++ b/arch/powerpc/kernel/pci_32.c
@@ -55,8 +55,7 @@ static u8* pci_to_OF_bus_map;
55 */ 55 */
56int pci_assign_all_buses; 56int pci_assign_all_buses;
57 57
58struct pci_controller* hose_head; 58LIST_HEAD(hose_list);
59struct pci_controller** hose_tail = &hose_head;
60 59
61static int pci_bus_count; 60static int pci_bus_count;
62 61
@@ -573,58 +572,6 @@ pcibios_assign_resources(void)
573 } 572 }
574} 573}
575 574
576
577int
578pcibios_enable_resources(struct pci_dev *dev, int mask)
579{
580 u16 cmd, old_cmd;
581 int idx;
582 struct resource *r;
583
584 pci_read_config_word(dev, PCI_COMMAND, &cmd);
585 old_cmd = cmd;
586 for (idx=0; idx<6; idx++) {
587 /* Only set up the requested stuff */
588 if (!(mask & (1<<idx)))
589 continue;
590
591 r = &dev->resource[idx];
592 if (r->flags & IORESOURCE_UNSET) {
593 printk(KERN_ERR "PCI: Device %s not available because of resource collisions\n", pci_name(dev));
594 return -EINVAL;
595 }
596 if (r->flags & IORESOURCE_IO)
597 cmd |= PCI_COMMAND_IO;
598 if (r->flags & IORESOURCE_MEM)
599 cmd |= PCI_COMMAND_MEMORY;
600 }
601 if (dev->resource[PCI_ROM_RESOURCE].start)
602 cmd |= PCI_COMMAND_MEMORY;
603 if (cmd != old_cmd) {
604 printk("PCI: Enabling device %s (%04x -> %04x)\n", pci_name(dev), old_cmd, cmd);
605 pci_write_config_word(dev, PCI_COMMAND, cmd);
606 }
607 return 0;
608}
609
610static int next_controller_index;
611
612struct pci_controller * __init
613pcibios_alloc_controller(void)
614{
615 struct pci_controller *hose;
616
617 hose = (struct pci_controller *)alloc_bootmem(sizeof(*hose));
618 memset(hose, 0, sizeof(struct pci_controller));
619
620 *hose_tail = hose;
621 hose_tail = &hose->next;
622
623 hose->index = next_controller_index++;
624
625 return hose;
626}
627
628#ifdef CONFIG_PPC_OF 575#ifdef CONFIG_PPC_OF
629/* 576/*
630 * Functions below are used on OpenFirmware machines. 577 * Functions below are used on OpenFirmware machines.
@@ -670,7 +617,7 @@ void
670pcibios_make_OF_bus_map(void) 617pcibios_make_OF_bus_map(void)
671{ 618{
672 int i; 619 int i;
673 struct pci_controller* hose; 620 struct pci_controller *hose, *tmp;
674 struct property *map_prop; 621 struct property *map_prop;
675 struct device_node *dn; 622 struct device_node *dn;
676 623
@@ -687,7 +634,7 @@ pcibios_make_OF_bus_map(void)
687 pci_to_OF_bus_map[i] = 0xff; 634 pci_to_OF_bus_map[i] = 0xff;
688 635
689 /* For each hose, we begin searching bridges */ 636 /* For each hose, we begin searching bridges */
690 for(hose=hose_head; hose; hose=hose->next) { 637 list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
691 struct device_node* node; 638 struct device_node* node;
692 node = (struct device_node *)hose->arch_data; 639 node = (struct device_node *)hose->arch_data;
693 if (!node) 640 if (!node)
@@ -765,7 +712,7 @@ static struct device_node *scan_OF_for_pci_bus(struct pci_bus *bus)
765 712
766 /* Are we a root bus ? */ 713 /* Are we a root bus ? */
767 if (bus->self == NULL || bus->parent == NULL) { 714 if (bus->self == NULL || bus->parent == NULL) {
768 struct pci_controller *hose = pci_bus_to_hose(bus->number); 715 struct pci_controller *hose = pci_bus_to_host(bus);
769 if (hose == NULL) 716 if (hose == NULL)
770 return NULL; 717 return NULL;
771 return of_node_get(hose->arch_data); 718 return of_node_get(hose->arch_data);
@@ -818,27 +765,6 @@ pci_device_to_OF_node(struct pci_dev *dev)
818} 765}
819EXPORT_SYMBOL(pci_device_to_OF_node); 766EXPORT_SYMBOL(pci_device_to_OF_node);
820 767
821/* This routine is meant to be used early during boot, when the
822 * PCI bus numbers have not yet been assigned, and you need to
823 * issue PCI config cycles to an OF device.
824 * It could also be used to "fix" RTAS config cycles if you want
825 * to set pci_assign_all_buses to 1 and still use RTAS for PCI
826 * config cycles.
827 */
828struct pci_controller* pci_find_hose_for_OF_device(struct device_node* node)
829{
830 if (!have_of)
831 return NULL;
832 while(node) {
833 struct pci_controller* hose;
834 for (hose=hose_head;hose;hose=hose->next)
835 if (hose->arch_data == node)
836 return hose;
837 node=node->parent;
838 }
839 return NULL;
840}
841
842static int 768static int
843find_OF_pci_device_filter(struct device_node* node, void* data) 769find_OF_pci_device_filter(struct device_node* node, void* data)
844{ 770{
@@ -1027,34 +953,12 @@ pci_create_OF_bus_map(void)
1027 } 953 }
1028} 954}
1029 955
1030static ssize_t pci_show_devspec(struct device *dev, struct device_attribute *attr, char *buf)
1031{
1032 struct pci_dev *pdev;
1033 struct device_node *np;
1034
1035 pdev = to_pci_dev (dev);
1036 np = pci_device_to_OF_node(pdev);
1037 if (np == NULL || np->full_name == NULL)
1038 return 0;
1039 return sprintf(buf, "%s", np->full_name);
1040}
1041static DEVICE_ATTR(devspec, S_IRUGO, pci_show_devspec, NULL);
1042
1043#else /* CONFIG_PPC_OF */ 956#else /* CONFIG_PPC_OF */
1044void pcibios_make_OF_bus_map(void) 957void pcibios_make_OF_bus_map(void)
1045{ 958{
1046} 959}
1047#endif /* CONFIG_PPC_OF */ 960#endif /* CONFIG_PPC_OF */
1048 961
1049/* Add sysfs properties */
1050int pcibios_add_platform_entries(struct pci_dev *pdev)
1051{
1052#ifdef CONFIG_PPC_OF
1053 return device_create_file(&pdev->dev, &dev_attr_devspec);
1054#endif /* CONFIG_PPC_OF */
1055}
1056
1057
1058#ifdef CONFIG_PPC_PMAC 962#ifdef CONFIG_PPC_PMAC
1059/* 963/*
1060 * This set of routines checks for PCI<->PCI bridges that have closed 964 * This set of routines checks for PCI<->PCI bridges that have closed
@@ -1269,14 +1173,14 @@ pcibios_fixup_p2p_bridges(void)
1269static int __init 1173static int __init
1270pcibios_init(void) 1174pcibios_init(void)
1271{ 1175{
1272 struct pci_controller *hose; 1176 struct pci_controller *hose, *tmp;
1273 struct pci_bus *bus; 1177 struct pci_bus *bus;
1274 int next_busno; 1178 int next_busno = 0;
1275 1179
1276 printk(KERN_INFO "PCI: Probing PCI hardware\n"); 1180 printk(KERN_INFO "PCI: Probing PCI hardware\n");
1277 1181
1278 /* Scan all of the recorded PCI controllers. */ 1182 /* Scan all of the recorded PCI controllers. */
1279 for (next_busno = 0, hose = hose_head; hose; hose = hose->next) { 1183 list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
1280 if (pci_assign_all_buses) 1184 if (pci_assign_all_buses)
1281 hose->first_busno = next_busno; 1185 hose->first_busno = next_busno;
1282 hose->last_busno = 0xff; 1186 hose->last_busno = 0xff;
@@ -1319,12 +1223,6 @@ pcibios_init(void)
1319 1223
1320subsys_initcall(pcibios_init); 1224subsys_initcall(pcibios_init);
1321 1225
1322unsigned long resource_fixup(struct pci_dev * dev, struct resource * res,
1323 unsigned long start, unsigned long size)
1324{
1325 return start;
1326}
1327
1328void __init pcibios_fixup_bus(struct pci_bus *bus) 1226void __init pcibios_fixup_bus(struct pci_bus *bus)
1329{ 1227{
1330 struct pci_controller *hose = (struct pci_controller *) bus->sysdata; 1228 struct pci_controller *hose = (struct pci_controller *) bus->sysdata;
@@ -1342,7 +1240,7 @@ void __init pcibios_fixup_bus(struct pci_bus *bus)
1342 if (!res->flags) { 1240 if (!res->flags) {
1343 if (io_offset) 1241 if (io_offset)
1344 printk(KERN_ERR "I/O resource not set for host" 1242 printk(KERN_ERR "I/O resource not set for host"
1345 " bridge %d\n", hose->index); 1243 " bridge %d\n", hose->global_number);
1346 res->start = 0; 1244 res->start = 0;
1347 res->end = IO_SPACE_LIMIT; 1245 res->end = IO_SPACE_LIMIT;
1348 res->flags = IORESOURCE_IO; 1246 res->flags = IORESOURCE_IO;
@@ -1356,7 +1254,7 @@ void __init pcibios_fixup_bus(struct pci_bus *bus)
1356 if (i > 0) 1254 if (i > 0)
1357 continue; 1255 continue;
1358 printk(KERN_ERR "Memory resource not set for " 1256 printk(KERN_ERR "Memory resource not set for "
1359 "host bridge %d\n", hose->index); 1257 "host bridge %d\n", hose->global_number);
1360 res->start = hose->pci_mem_offset; 1258 res->start = hose->pci_mem_offset;
1361 res->end = ~0U; 1259 res->end = ~0U;
1362 res->flags = IORESOURCE_MEM; 1260 res->flags = IORESOURCE_MEM;
@@ -1370,7 +1268,7 @@ void __init pcibios_fixup_bus(struct pci_bus *bus)
1370 for (i = 0; i < 4; ++i) { 1268 for (i = 0; i < 4; ++i) {
1371 if ((res = bus->resource[i]) == NULL) 1269 if ((res = bus->resource[i]) == NULL)
1372 continue; 1270 continue;
1373 if (!res->flags) 1271 if (!res->flags || bus->self->transparent)
1374 continue; 1272 continue;
1375 if (io_offset && (res->flags & IORESOURCE_IO)) { 1273 if (io_offset && (res->flags & IORESOURCE_IO)) {
1376 res->start += io_offset; 1274 res->start += io_offset;
@@ -1395,11 +1293,6 @@ void __init pcibios_fixup_bus(struct pci_bus *bus)
1395 } 1293 }
1396} 1294}
1397 1295
1398char __init *pcibios_setup(char *str)
1399{
1400 return str;
1401}
1402
1403/* the next one is stolen from the alpha port... */ 1296/* the next one is stolen from the alpha port... */
1404void __init 1297void __init
1405pcibios_update_irq(struct pci_dev *dev, int irq) 1298pcibios_update_irq(struct pci_dev *dev, int irq)
@@ -1408,64 +1301,6 @@ pcibios_update_irq(struct pci_dev *dev, int irq)
1408 /* XXX FIXME - update OF device tree node interrupt property */ 1301 /* XXX FIXME - update OF device tree node interrupt property */
1409} 1302}
1410 1303
1411#ifdef CONFIG_PPC_MERGE
1412/* XXX This is a copy of the ppc64 version. This is temporary until we start
1413 * merging the 2 PCI layers
1414 */
1415/*
1416 * Reads the interrupt pin to determine if interrupt is use by card.
1417 * If the interrupt is used, then gets the interrupt line from the
1418 * openfirmware and sets it in the pci_dev and pci_config line.
1419 */
1420int pci_read_irq_line(struct pci_dev *pci_dev)
1421{
1422 struct of_irq oirq;
1423 unsigned int virq;
1424
1425 DBG("Try to map irq for %s...\n", pci_name(pci_dev));
1426
1427 /* Try to get a mapping from the device-tree */
1428 if (of_irq_map_pci(pci_dev, &oirq)) {
1429 u8 line, pin;
1430
1431 /* If that fails, lets fallback to what is in the config
1432 * space and map that through the default controller. We
1433 * also set the type to level low since that's what PCI
1434 * interrupts are. If your platform does differently, then
1435 * either provide a proper interrupt tree or don't use this
1436 * function.
1437 */
1438 if (pci_read_config_byte(pci_dev, PCI_INTERRUPT_PIN, &pin))
1439 return -1;
1440 if (pin == 0)
1441 return -1;
1442 if (pci_read_config_byte(pci_dev, PCI_INTERRUPT_LINE, &line) ||
1443 line == 0xff) {
1444 return -1;
1445 }
1446 DBG(" -> no map ! Using irq line %d from PCI config\n", line);
1447
1448 virq = irq_create_mapping(NULL, line);
1449 if (virq != NO_IRQ)
1450 set_irq_type(virq, IRQ_TYPE_LEVEL_LOW);
1451 } else {
1452 DBG(" -> got one, spec %d cells (0x%08x...) on %s\n",
1453 oirq.size, oirq.specifier[0], oirq.controller->full_name);
1454
1455 virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
1456 oirq.size);
1457 }
1458 if(virq == NO_IRQ) {
1459 DBG(" -> failed to map !\n");
1460 return -1;
1461 }
1462 pci_dev->irq = virq;
1463
1464 return 0;
1465}
1466EXPORT_SYMBOL(pci_read_irq_line);
1467#endif /* CONFIG_PPC_MERGE */
1468
1469int pcibios_enable_device(struct pci_dev *dev, int mask) 1304int pcibios_enable_device(struct pci_dev *dev, int mask)
1470{ 1305{
1471 u16 cmd, old_cmd; 1306 u16 cmd, old_cmd;
@@ -1497,281 +1332,17 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
1497 return 0; 1332 return 0;
1498} 1333}
1499 1334
1500struct pci_controller* 1335static struct pci_controller*
1501pci_bus_to_hose(int bus) 1336pci_bus_to_hose(int bus)
1502{ 1337{
1503 struct pci_controller* hose = hose_head; 1338 struct pci_controller *hose, *tmp;
1504 1339
1505 for (; hose; hose = hose->next) 1340 list_for_each_entry_safe(hose, tmp, &hose_list, list_node)
1506 if (bus >= hose->first_busno && bus <= hose->last_busno) 1341 if (bus >= hose->first_busno && bus <= hose->last_busno)
1507 return hose; 1342 return hose;
1508 return NULL; 1343 return NULL;
1509} 1344}
1510 1345
1511void __iomem *
1512pci_bus_io_base(unsigned int bus)
1513{
1514 struct pci_controller *hose;
1515
1516 hose = pci_bus_to_hose(bus);
1517 if (!hose)
1518 return NULL;
1519 return hose->io_base_virt;
1520}
1521
1522unsigned long
1523pci_bus_io_base_phys(unsigned int bus)
1524{
1525 struct pci_controller *hose;
1526
1527 hose = pci_bus_to_hose(bus);
1528 if (!hose)
1529 return 0;
1530 return hose->io_base_phys;
1531}
1532
1533unsigned long
1534pci_bus_mem_base_phys(unsigned int bus)
1535{
1536 struct pci_controller *hose;
1537
1538 hose = pci_bus_to_hose(bus);
1539 if (!hose)
1540 return 0;
1541 return hose->pci_mem_offset;
1542}
1543
1544unsigned long
1545pci_resource_to_bus(struct pci_dev *pdev, struct resource *res)
1546{
1547 /* Hack alert again ! See comments in chrp_pci.c
1548 */
1549 struct pci_controller* hose =
1550 (struct pci_controller *)pdev->sysdata;
1551 if (hose && res->flags & IORESOURCE_MEM)
1552 return res->start - hose->pci_mem_offset;
1553 /* We may want to do something with IOs here... */
1554 return res->start;
1555}
1556
1557
1558static struct resource *__pci_mmap_make_offset(struct pci_dev *dev,
1559 resource_size_t *offset,
1560 enum pci_mmap_state mmap_state)
1561{
1562 struct pci_controller *hose = pci_bus_to_hose(dev->bus->number);
1563 unsigned long io_offset = 0;
1564 int i, res_bit;
1565
1566 if (hose == 0)
1567 return NULL; /* should never happen */
1568
1569 /* If memory, add on the PCI bridge address offset */
1570 if (mmap_state == pci_mmap_mem) {
1571#if 0 /* See comment in pci_resource_to_user() for why this is disabled */
1572 *offset += hose->pci_mem_offset;
1573#endif
1574 res_bit = IORESOURCE_MEM;
1575 } else {
1576 io_offset = hose->io_base_virt - (void __iomem *)_IO_BASE;
1577 *offset += io_offset;
1578 res_bit = IORESOURCE_IO;
1579 }
1580
1581 /*
1582 * Check that the offset requested corresponds to one of the
1583 * resources of the device.
1584 */
1585 for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
1586 struct resource *rp = &dev->resource[i];
1587 int flags = rp->flags;
1588
1589 /* treat ROM as memory (should be already) */
1590 if (i == PCI_ROM_RESOURCE)
1591 flags |= IORESOURCE_MEM;
1592
1593 /* Active and same type? */
1594 if ((flags & res_bit) == 0)
1595 continue;
1596
1597 /* In the range of this resource? */
1598 if (*offset < (rp->start & PAGE_MASK) || *offset > rp->end)
1599 continue;
1600
1601 /* found it! construct the final physical address */
1602 if (mmap_state == pci_mmap_io)
1603 *offset += hose->io_base_phys - io_offset;
1604 return rp;
1605 }
1606
1607 return NULL;
1608}
1609
1610/*
1611 * Set vm_page_prot of VMA, as appropriate for this architecture, for a pci
1612 * device mapping.
1613 */
1614static pgprot_t __pci_mmap_set_pgprot(struct pci_dev *dev, struct resource *rp,
1615 pgprot_t protection,
1616 enum pci_mmap_state mmap_state,
1617 int write_combine)
1618{
1619 unsigned long prot = pgprot_val(protection);
1620
1621 /* Write combine is always 0 on non-memory space mappings. On
1622 * memory space, if the user didn't pass 1, we check for a
1623 * "prefetchable" resource. This is a bit hackish, but we use
1624 * this to workaround the inability of /sysfs to provide a write
1625 * combine bit
1626 */
1627 if (mmap_state != pci_mmap_mem)
1628 write_combine = 0;
1629 else if (write_combine == 0) {
1630 if (rp->flags & IORESOURCE_PREFETCH)
1631 write_combine = 1;
1632 }
1633
1634 /* XXX would be nice to have a way to ask for write-through */
1635 prot |= _PAGE_NO_CACHE;
1636 if (write_combine)
1637 prot &= ~_PAGE_GUARDED;
1638 else
1639 prot |= _PAGE_GUARDED;
1640
1641 return __pgprot(prot);
1642}
1643
1644/*
1645 * This one is used by /dev/mem and fbdev who have no clue about the
1646 * PCI device, it tries to find the PCI device first and calls the
1647 * above routine
1648 */
1649pgprot_t pci_phys_mem_access_prot(struct file *file,
1650 unsigned long pfn,
1651 unsigned long size,
1652 pgprot_t protection)
1653{
1654 struct pci_dev *pdev = NULL;
1655 struct resource *found = NULL;
1656 unsigned long prot = pgprot_val(protection);
1657 unsigned long offset = pfn << PAGE_SHIFT;
1658 int i;
1659
1660 if (page_is_ram(pfn))
1661 return __pgprot(prot);
1662
1663 prot |= _PAGE_NO_CACHE | _PAGE_GUARDED;
1664
1665 for_each_pci_dev(pdev) {
1666 for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
1667 struct resource *rp = &pdev->resource[i];
1668 int flags = rp->flags;
1669
1670 /* Active and same type? */
1671 if ((flags & IORESOURCE_MEM) == 0)
1672 continue;
1673 /* In the range of this resource? */
1674 if (offset < (rp->start & PAGE_MASK) ||
1675 offset > rp->end)
1676 continue;
1677 found = rp;
1678 break;
1679 }
1680 if (found)
1681 break;
1682 }
1683 if (found) {
1684 if (found->flags & IORESOURCE_PREFETCH)
1685 prot &= ~_PAGE_GUARDED;
1686 pci_dev_put(pdev);
1687 }
1688
1689 DBG("non-PCI map for %lx, prot: %lx\n", offset, prot);
1690
1691 return __pgprot(prot);
1692}
1693
1694
1695/*
1696 * Perform the actual remap of the pages for a PCI device mapping, as
1697 * appropriate for this architecture. The region in the process to map
1698 * is described by vm_start and vm_end members of VMA, the base physical
1699 * address is found in vm_pgoff.
1700 * The pci device structure is provided so that architectures may make mapping
1701 * decisions on a per-device or per-bus basis.
1702 *
1703 * Returns a negative error code on failure, zero on success.
1704 */
1705int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
1706 enum pci_mmap_state mmap_state,
1707 int write_combine)
1708{
1709 resource_size_t offset = vma->vm_pgoff << PAGE_SHIFT;
1710 struct resource *rp;
1711 int ret;
1712
1713 rp = __pci_mmap_make_offset(dev, &offset, mmap_state);
1714 if (rp == NULL)
1715 return -EINVAL;
1716
1717 vma->vm_pgoff = offset >> PAGE_SHIFT;
1718 vma->vm_page_prot = __pci_mmap_set_pgprot(dev, rp,
1719 vma->vm_page_prot,
1720 mmap_state, write_combine);
1721
1722 ret = remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
1723 vma->vm_end - vma->vm_start, vma->vm_page_prot);
1724
1725 return ret;
1726}
1727
1728/* Obsolete functions. Should be removed once the symbios driver
1729 * is fixed
1730 */
1731unsigned long
1732phys_to_bus(unsigned long pa)
1733{
1734 struct pci_controller *hose;
1735 int i;
1736
1737 for (hose = hose_head; hose; hose = hose->next) {
1738 for (i = 0; i < 3; ++i) {
1739 if (pa >= hose->mem_resources[i].start
1740 && pa <= hose->mem_resources[i].end) {
1741 /*
1742 * XXX the hose->pci_mem_offset really
1743 * only applies to mem_resources[0].
1744 * We need a way to store an offset for
1745 * the others. -- paulus
1746 */
1747 if (i == 0)
1748 pa -= hose->pci_mem_offset;
1749 return pa;
1750 }
1751 }
1752 }
1753 /* hmmm, didn't find it */
1754 return 0;
1755}
1756
1757unsigned long
1758pci_phys_to_bus(unsigned long pa, int busnr)
1759{
1760 struct pci_controller* hose = pci_bus_to_hose(busnr);
1761 if (!hose)
1762 return pa;
1763 return pa - hose->pci_mem_offset;
1764}
1765
1766unsigned long
1767pci_bus_to_phys(unsigned int ba, int busnr)
1768{
1769 struct pci_controller* hose = pci_bus_to_hose(busnr);
1770 if (!hose)
1771 return ba;
1772 return ba + hose->pci_mem_offset;
1773}
1774
1775/* Provide information on locations of various I/O regions in physical 1346/* Provide information on locations of various I/O regions in physical
1776 * memory. Do this on a per-card basis so that we choose the right 1347 * memory. Do this on a per-card basis so that we choose the right
1777 * root bridge. 1348 * root bridge.
@@ -1814,62 +1385,11 @@ long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn)
1814 return result; 1385 return result;
1815} 1386}
1816 1387
1817void pci_resource_to_user(const struct pci_dev *dev, int bar,
1818 const struct resource *rsrc,
1819 resource_size_t *start, resource_size_t *end)
1820{
1821 struct pci_controller *hose = pci_bus_to_hose(dev->bus->number);
1822 resource_size_t offset = 0;
1823
1824 if (hose == NULL)
1825 return;
1826
1827 if (rsrc->flags & IORESOURCE_IO)
1828 offset = (unsigned long)hose->io_base_virt - _IO_BASE;
1829
1830 /* We pass a fully fixed up address to userland for MMIO instead of
1831 * a BAR value because X is lame and expects to be able to use that
1832 * to pass to /dev/mem !
1833 *
1834 * That means that we'll have potentially 64 bits values where some
1835 * userland apps only expect 32 (like X itself since it thinks only
1836 * Sparc has 64 bits MMIO) but if we don't do that, we break it on
1837 * 32 bits CHRPs :-(
1838 *
1839 * Hopefully, the sysfs insterface is immune to that gunk. Once X
1840 * has been fixed (and the fix spread enough), we can re-enable the
1841 * 2 lines below and pass down a BAR value to userland. In that case
1842 * we'll also have to re-enable the matching code in
1843 * __pci_mmap_make_offset().
1844 *
1845 * BenH.
1846 */
1847#if 0
1848 else if (rsrc->flags & IORESOURCE_MEM)
1849 offset = hose->pci_mem_offset;
1850#endif
1851
1852 *start = rsrc->start - offset;
1853 *end = rsrc->end - offset;
1854}
1855
1856void __init pci_init_resource(struct resource *res, resource_size_t start,
1857 resource_size_t end, int flags, char *name)
1858{
1859 res->start = start;
1860 res->end = end;
1861 res->flags = flags;
1862 res->name = name;
1863 res->parent = NULL;
1864 res->sibling = NULL;
1865 res->child = NULL;
1866}
1867
1868unsigned long pci_address_to_pio(phys_addr_t address) 1388unsigned long pci_address_to_pio(phys_addr_t address)
1869{ 1389{
1870 struct pci_controller* hose = hose_head; 1390 struct pci_controller *hose, *tmp;
1871 1391
1872 for (; hose; hose = hose->next) { 1392 list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
1873 unsigned int size = hose->io_resource.end - 1393 unsigned int size = hose->io_resource.end -
1874 hose->io_resource.start + 1; 1394 hose->io_resource.start + 1;
1875 if (address >= hose->io_base_phys && 1395 if (address >= hose->io_base_phys &&
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index e3009a43ac56..a97e23ac1976 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -22,6 +22,7 @@
22#include <linux/list.h> 22#include <linux/list.h>
23#include <linux/syscalls.h> 23#include <linux/syscalls.h>
24#include <linux/irq.h> 24#include <linux/irq.h>
25#include <linux/vmalloc.h>
25 26
26#include <asm/processor.h> 27#include <asm/processor.h>
27#include <asm/io.h> 28#include <asm/io.h>
@@ -41,35 +42,23 @@
41 42
42unsigned long pci_probe_only = 1; 43unsigned long pci_probe_only = 1;
43int pci_assign_all_buses = 0; 44int pci_assign_all_buses = 0;
44static int pci_initial_scan_done;
45 45
46static void fixup_resource(struct resource *res, struct pci_dev *dev); 46static void fixup_resource(struct resource *res, struct pci_dev *dev);
47static void do_bus_setup(struct pci_bus *bus); 47static void do_bus_setup(struct pci_bus *bus);
48static void phbs_remap_io(void);
49 48
50/* pci_io_base -- the base address from which io bars are offsets. 49/* pci_io_base -- the base address from which io bars are offsets.
51 * This is the lowest I/O base address (so bar values are always positive), 50 * This is the lowest I/O base address (so bar values are always positive),
52 * and it *must* be the start of ISA space if an ISA bus exists because 51 * and it *must* be the start of ISA space if an ISA bus exists because
53 * ISA drivers use hard coded offsets. If no ISA bus exists a dummy 52 * ISA drivers use hard coded offsets. If no ISA bus exists nothing
54 * page is mapped and isa_io_limit prevents access to it. 53 * is mapped on the first 64K of IO space
55 */ 54 */
56unsigned long isa_io_base; /* NULL if no ISA bus */ 55unsigned long pci_io_base = ISA_IO_BASE;
57EXPORT_SYMBOL(isa_io_base);
58unsigned long pci_io_base;
59EXPORT_SYMBOL(pci_io_base); 56EXPORT_SYMBOL(pci_io_base);
60 57
61void iSeries_pcibios_init(void);
62
63LIST_HEAD(hose_list); 58LIST_HEAD(hose_list);
64 59
65static struct dma_mapping_ops *pci_dma_ops; 60static struct dma_mapping_ops *pci_dma_ops;
66 61
67int global_phb_number; /* Global phb counter */
68
69/* Cached ISA bridge dev. */
70struct pci_dev *ppc64_isabridge_dev = NULL;
71EXPORT_SYMBOL_GPL(ppc64_isabridge_dev);
72
73void set_pci_dma_ops(struct dma_mapping_ops *dma_ops) 62void set_pci_dma_ops(struct dma_mapping_ops *dma_ops)
74{ 63{
75 pci_dma_ops = dma_ops; 64 pci_dma_ops = dma_ops;
@@ -100,7 +89,7 @@ void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region
100 return; 89 return;
101 90
102 if (res->flags & IORESOURCE_IO) 91 if (res->flags & IORESOURCE_IO)
103 offset = (unsigned long)hose->io_base_virt - pci_io_base; 92 offset = (unsigned long)hose->io_base_virt - _IO_BASE;
104 93
105 if (res->flags & IORESOURCE_MEM) 94 if (res->flags & IORESOURCE_MEM)
106 offset = hose->pci_mem_offset; 95 offset = hose->pci_mem_offset;
@@ -119,7 +108,7 @@ void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
119 return; 108 return;
120 109
121 if (res->flags & IORESOURCE_IO) 110 if (res->flags & IORESOURCE_IO)
122 offset = (unsigned long)hose->io_base_virt - pci_io_base; 111 offset = (unsigned long)hose->io_base_virt - _IO_BASE;
123 112
124 if (res->flags & IORESOURCE_MEM) 113 if (res->flags & IORESOURCE_MEM)
125 offset = hose->pci_mem_offset; 114 offset = hose->pci_mem_offset;
@@ -156,7 +145,7 @@ void pcibios_align_resource(void *data, struct resource *res,
156 145
157 if (res->flags & IORESOURCE_IO) { 146 if (res->flags & IORESOURCE_IO) {
158 unsigned long offset = (unsigned long)hose->io_base_virt - 147 unsigned long offset = (unsigned long)hose->io_base_virt -
159 pci_io_base; 148 _IO_BASE;
160 /* Make sure we start at our min on all hoses */ 149 /* Make sure we start at our min on all hoses */
161 if (start - offset < PCIBIOS_MIN_IO) 150 if (start - offset < PCIBIOS_MIN_IO)
162 start = PCIBIOS_MIN_IO + offset; 151 start = PCIBIOS_MIN_IO + offset;
@@ -180,55 +169,6 @@ void pcibios_align_resource(void *data, struct resource *res,
180 res->start = start; 169 res->start = start;
181} 170}
182 171
183static DEFINE_SPINLOCK(hose_spinlock);
184
185/*
186 * pci_controller(phb) initialized common variables.
187 */
188static void __devinit pci_setup_pci_controller(struct pci_controller *hose)
189{
190 memset(hose, 0, sizeof(struct pci_controller));
191
192 spin_lock(&hose_spinlock);
193 hose->global_number = global_phb_number++;
194 list_add_tail(&hose->list_node, &hose_list);
195 spin_unlock(&hose_spinlock);
196}
197
198struct pci_controller * pcibios_alloc_controller(struct device_node *dev)
199{
200 struct pci_controller *phb;
201
202 if (mem_init_done)
203 phb = kmalloc(sizeof(struct pci_controller), GFP_KERNEL);
204 else
205 phb = alloc_bootmem(sizeof (struct pci_controller));
206 if (phb == NULL)
207 return NULL;
208 pci_setup_pci_controller(phb);
209 phb->arch_data = dev;
210 phb->is_dynamic = mem_init_done;
211 if (dev) {
212 int nid = of_node_to_nid(dev);
213
214 if (nid < 0 || !node_online(nid))
215 nid = -1;
216
217 PHB_SET_NODE(phb, nid);
218 }
219 return phb;
220}
221
222void pcibios_free_controller(struct pci_controller *phb)
223{
224 spin_lock(&hose_spinlock);
225 list_del(&phb->list_node);
226 spin_unlock(&hose_spinlock);
227
228 if (phb->is_dynamic)
229 kfree(phb);
230}
231
232void __devinit pcibios_claim_one_bus(struct pci_bus *b) 172void __devinit pcibios_claim_one_bus(struct pci_bus *b)
233{ 173{
234 struct pci_dev *dev; 174 struct pci_dev *dev;
@@ -291,7 +231,6 @@ static unsigned int pci_parse_of_flags(u32 addr0)
291 return flags; 231 return flags;
292} 232}
293 233
294#define GET_64BIT(prop, i) ((((u64) (prop)[(i)]) << 32) | (prop)[(i)+1])
295 234
296static void pci_parse_of_addrs(struct device_node *node, struct pci_dev *dev) 235static void pci_parse_of_addrs(struct device_node *node, struct pci_dev *dev)
297{ 236{
@@ -310,8 +249,8 @@ static void pci_parse_of_addrs(struct device_node *node, struct pci_dev *dev)
310 flags = pci_parse_of_flags(addrs[0]); 249 flags = pci_parse_of_flags(addrs[0]);
311 if (!flags) 250 if (!flags)
312 continue; 251 continue;
313 base = GET_64BIT(addrs, 1); 252 base = of_read_number(&addrs[1], 2);
314 size = GET_64BIT(addrs, 3); 253 size = of_read_number(&addrs[3], 2);
315 if (!size) 254 if (!size)
316 continue; 255 continue;
317 i = addrs[0] & 0xff; 256 i = addrs[0] & 0xff;
@@ -479,7 +418,7 @@ void __devinit of_scan_pci_bridge(struct device_node *node,
479 i = 1; 418 i = 1;
480 for (; len >= 32; len -= 32, ranges += 8) { 419 for (; len >= 32; len -= 32, ranges += 8) {
481 flags = pci_parse_of_flags(ranges[0]); 420 flags = pci_parse_of_flags(ranges[0]);
482 size = GET_64BIT(ranges, 6); 421 size = of_read_number(&ranges[6], 2);
483 if (flags == 0 || size == 0) 422 if (flags == 0 || size == 0)
484 continue; 423 continue;
485 if (flags & IORESOURCE_IO) { 424 if (flags & IORESOURCE_IO) {
@@ -498,7 +437,7 @@ void __devinit of_scan_pci_bridge(struct device_node *node,
498 res = bus->resource[i]; 437 res = bus->resource[i];
499 ++i; 438 ++i;
500 } 439 }
501 res->start = GET_64BIT(ranges, 1); 440 res->start = of_read_number(&ranges[1], 2);
502 res->end = res->start + size - 1; 441 res->end = res->start + size - 1;
503 res->flags = flags; 442 res->flags = flags;
504 fixup_resource(res, dev); 443 fixup_resource(res, dev);
@@ -537,10 +476,16 @@ void __devinit scan_phb(struct pci_controller *hose)
537 bus->secondary = hose->first_busno; 476 bus->secondary = hose->first_busno;
538 hose->bus = bus; 477 hose->bus = bus;
539 478
479 if (!firmware_has_feature(FW_FEATURE_ISERIES))
480 pcibios_map_io_space(bus);
481
540 bus->resource[0] = res = &hose->io_resource; 482 bus->resource[0] = res = &hose->io_resource;
541 if (res->flags && request_resource(&ioport_resource, res)) 483 if (res->flags && request_resource(&ioport_resource, res)) {
542 printk(KERN_ERR "Failed to request PCI IO region " 484 printk(KERN_ERR "Failed to request PCI IO region "
543 "on PCI domain %04x\n", hose->global_number); 485 "on PCI domain %04x\n", hose->global_number);
486 DBG("res->start = 0x%016lx, res->end = 0x%016lx\n",
487 res->start, res->end);
488 }
544 489
545 for (i = 0; i < 3; ++i) { 490 for (i = 0; i < 3; ++i) {
546 res = &hose->mem_resources[i]; 491 res = &hose->mem_resources[i];
@@ -598,17 +543,6 @@ static int __init pcibios_init(void)
598 if (ppc_md.pcibios_fixup) 543 if (ppc_md.pcibios_fixup)
599 ppc_md.pcibios_fixup(); 544 ppc_md.pcibios_fixup();
600 545
601 /* Cache the location of the ISA bridge (if we have one) */
602 ppc64_isabridge_dev = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, NULL);
603 if (ppc64_isabridge_dev != NULL)
604 printk(KERN_DEBUG "ISA bridge at %s\n", pci_name(ppc64_isabridge_dev));
605
606 if (!firmware_has_feature(FW_FEATURE_ISERIES))
607 /* map in PCI I/O space */
608 phbs_remap_io();
609
610 pci_initial_scan_done = 1;
611
612 printk(KERN_DEBUG "PCI: Probing PCI hardware done\n"); 546 printk(KERN_DEBUG "PCI: Probing PCI hardware done\n");
613 547
614 return 0; 548 return 0;
@@ -616,11 +550,6 @@ static int __init pcibios_init(void)
616 550
617subsys_initcall(pcibios_init); 551subsys_initcall(pcibios_init);
618 552
619char __init *pcibios_setup(char *str)
620{
621 return str;
622}
623
624int pcibios_enable_device(struct pci_dev *dev, int mask) 553int pcibios_enable_device(struct pci_dev *dev, int mask)
625{ 554{
626 u16 cmd, oldcmd; 555 u16 cmd, oldcmd;
@@ -651,22 +580,6 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
651 return 0; 580 return 0;
652} 581}
653 582
654/*
655 * Return the domain number for this bus.
656 */
657int pci_domain_nr(struct pci_bus *bus)
658{
659 if (firmware_has_feature(FW_FEATURE_ISERIES))
660 return 0;
661 else {
662 struct pci_controller *hose = pci_bus_to_host(bus);
663
664 return hose->global_number;
665 }
666}
667
668EXPORT_SYMBOL(pci_domain_nr);
669
670/* Decide whether to display the domain number in /proc */ 583/* Decide whether to display the domain number in /proc */
671int pci_proc_domain(struct pci_bus *bus) 584int pci_proc_domain(struct pci_bus *bus)
672{ 585{
@@ -678,281 +591,6 @@ int pci_proc_domain(struct pci_bus *bus)
678 } 591 }
679} 592}
680 593
681/*
682 * Platform support for /proc/bus/pci/X/Y mmap()s,
683 * modelled on the sparc64 implementation by Dave Miller.
684 * -- paulus.
685 */
686
687/*
688 * Adjust vm_pgoff of VMA such that it is the physical page offset
689 * corresponding to the 32-bit pci bus offset for DEV requested by the user.
690 *
691 * Basically, the user finds the base address for his device which he wishes
692 * to mmap. They read the 32-bit value from the config space base register,
693 * add whatever PAGE_SIZE multiple offset they wish, and feed this into the
694 * offset parameter of mmap on /proc/bus/pci/XXX for that device.
695 *
696 * Returns negative error code on failure, zero on success.
697 */
698static struct resource *__pci_mmap_make_offset(struct pci_dev *dev,
699 resource_size_t *offset,
700 enum pci_mmap_state mmap_state)
701{
702 struct pci_controller *hose = pci_bus_to_host(dev->bus);
703 unsigned long io_offset = 0;
704 int i, res_bit;
705
706 if (hose == 0)
707 return NULL; /* should never happen */
708
709 /* If memory, add on the PCI bridge address offset */
710 if (mmap_state == pci_mmap_mem) {
711#if 0 /* See comment in pci_resource_to_user() for why this is disabled */
712 *offset += hose->pci_mem_offset;
713#endif
714 res_bit = IORESOURCE_MEM;
715 } else {
716 io_offset = (unsigned long)hose->io_base_virt - pci_io_base;
717 *offset += io_offset;
718 res_bit = IORESOURCE_IO;
719 }
720
721 /*
722 * Check that the offset requested corresponds to one of the
723 * resources of the device.
724 */
725 for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
726 struct resource *rp = &dev->resource[i];
727 int flags = rp->flags;
728
729 /* treat ROM as memory (should be already) */
730 if (i == PCI_ROM_RESOURCE)
731 flags |= IORESOURCE_MEM;
732
733 /* Active and same type? */
734 if ((flags & res_bit) == 0)
735 continue;
736
737 /* In the range of this resource? */
738 if (*offset < (rp->start & PAGE_MASK) || *offset > rp->end)
739 continue;
740
741 /* found it! construct the final physical address */
742 if (mmap_state == pci_mmap_io)
743 *offset += hose->io_base_phys - io_offset;
744 return rp;
745 }
746
747 return NULL;
748}
749
750/*
751 * Set vm_page_prot of VMA, as appropriate for this architecture, for a pci
752 * device mapping.
753 */
754static pgprot_t __pci_mmap_set_pgprot(struct pci_dev *dev, struct resource *rp,
755 pgprot_t protection,
756 enum pci_mmap_state mmap_state,
757 int write_combine)
758{
759 unsigned long prot = pgprot_val(protection);
760
761 /* Write combine is always 0 on non-memory space mappings. On
762 * memory space, if the user didn't pass 1, we check for a
763 * "prefetchable" resource. This is a bit hackish, but we use
764 * this to workaround the inability of /sysfs to provide a write
765 * combine bit
766 */
767 if (mmap_state != pci_mmap_mem)
768 write_combine = 0;
769 else if (write_combine == 0) {
770 if (rp->flags & IORESOURCE_PREFETCH)
771 write_combine = 1;
772 }
773
774 /* XXX would be nice to have a way to ask for write-through */
775 prot |= _PAGE_NO_CACHE;
776 if (write_combine)
777 prot &= ~_PAGE_GUARDED;
778 else
779 prot |= _PAGE_GUARDED;
780
781 return __pgprot(prot);
782}
783
784/*
785 * This one is used by /dev/mem and fbdev who have no clue about the
786 * PCI device, it tries to find the PCI device first and calls the
787 * above routine
788 */
789pgprot_t pci_phys_mem_access_prot(struct file *file,
790 unsigned long pfn,
791 unsigned long size,
792 pgprot_t protection)
793{
794 struct pci_dev *pdev = NULL;
795 struct resource *found = NULL;
796 unsigned long prot = pgprot_val(protection);
797 unsigned long offset = pfn << PAGE_SHIFT;
798 int i;
799
800 if (page_is_ram(pfn))
801 return __pgprot(prot);
802
803 prot |= _PAGE_NO_CACHE | _PAGE_GUARDED;
804
805 for_each_pci_dev(pdev) {
806 for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
807 struct resource *rp = &pdev->resource[i];
808 int flags = rp->flags;
809
810 /* Active and same type? */
811 if ((flags & IORESOURCE_MEM) == 0)
812 continue;
813 /* In the range of this resource? */
814 if (offset < (rp->start & PAGE_MASK) ||
815 offset > rp->end)
816 continue;
817 found = rp;
818 break;
819 }
820 if (found)
821 break;
822 }
823 if (found) {
824 if (found->flags & IORESOURCE_PREFETCH)
825 prot &= ~_PAGE_GUARDED;
826 pci_dev_put(pdev);
827 }
828
829 DBG("non-PCI map for %lx, prot: %lx\n", offset, prot);
830
831 return __pgprot(prot);
832}
833
834
835/*
836 * Perform the actual remap of the pages for a PCI device mapping, as
837 * appropriate for this architecture. The region in the process to map
838 * is described by vm_start and vm_end members of VMA, the base physical
839 * address is found in vm_pgoff.
840 * The pci device structure is provided so that architectures may make mapping
841 * decisions on a per-device or per-bus basis.
842 *
843 * Returns a negative error code on failure, zero on success.
844 */
845int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
846 enum pci_mmap_state mmap_state, int write_combine)
847{
848 resource_size_t offset = vma->vm_pgoff << PAGE_SHIFT;
849 struct resource *rp;
850 int ret;
851
852 rp = __pci_mmap_make_offset(dev, &offset, mmap_state);
853 if (rp == NULL)
854 return -EINVAL;
855
856 vma->vm_pgoff = offset >> PAGE_SHIFT;
857 vma->vm_page_prot = __pci_mmap_set_pgprot(dev, rp,
858 vma->vm_page_prot,
859 mmap_state, write_combine);
860
861 ret = remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
862 vma->vm_end - vma->vm_start, vma->vm_page_prot);
863
864 return ret;
865}
866
867static ssize_t pci_show_devspec(struct device *dev,
868 struct device_attribute *attr, char *buf)
869{
870 struct pci_dev *pdev;
871 struct device_node *np;
872
873 pdev = to_pci_dev (dev);
874 np = pci_device_to_OF_node(pdev);
875 if (np == NULL || np->full_name == NULL)
876 return 0;
877 return sprintf(buf, "%s", np->full_name);
878}
879static DEVICE_ATTR(devspec, S_IRUGO, pci_show_devspec, NULL);
880
881int pcibios_add_platform_entries(struct pci_dev *pdev)
882{
883 return device_create_file(&pdev->dev, &dev_attr_devspec);
884}
885
886#define ISA_SPACE_MASK 0x1
887#define ISA_SPACE_IO 0x1
888
889static void __devinit pci_process_ISA_OF_ranges(struct device_node *isa_node,
890 unsigned long phb_io_base_phys,
891 void __iomem * phb_io_base_virt)
892{
893 /* Remove these asap */
894
895 struct pci_address {
896 u32 a_hi;
897 u32 a_mid;
898 u32 a_lo;
899 };
900
901 struct isa_address {
902 u32 a_hi;
903 u32 a_lo;
904 };
905
906 struct isa_range {
907 struct isa_address isa_addr;
908 struct pci_address pci_addr;
909 unsigned int size;
910 };
911
912 const struct isa_range *range;
913 unsigned long pci_addr;
914 unsigned int isa_addr;
915 unsigned int size;
916 int rlen = 0;
917
918 range = of_get_property(isa_node, "ranges", &rlen);
919 if (range == NULL || (rlen < sizeof(struct isa_range))) {
920 printk(KERN_ERR "no ISA ranges or unexpected isa range size,"
921 "mapping 64k\n");
922 __ioremap_explicit(phb_io_base_phys,
923 (unsigned long)phb_io_base_virt,
924 0x10000, _PAGE_NO_CACHE | _PAGE_GUARDED);
925 return;
926 }
927
928 /* From "ISA Binding to 1275"
929 * The ranges property is laid out as an array of elements,
930 * each of which comprises:
931 * cells 0 - 1: an ISA address
932 * cells 2 - 4: a PCI address
933 * (size depending on dev->n_addr_cells)
934 * cell 5: the size of the range
935 */
936 if ((range->isa_addr.a_hi && ISA_SPACE_MASK) == ISA_SPACE_IO) {
937 isa_addr = range->isa_addr.a_lo;
938 pci_addr = (unsigned long) range->pci_addr.a_mid << 32 |
939 range->pci_addr.a_lo;
940
941 /* Assume these are both zero */
942 if ((pci_addr != 0) || (isa_addr != 0)) {
943 printk(KERN_ERR "unexpected isa to pci mapping: %s\n",
944 __FUNCTION__);
945 return;
946 }
947
948 size = PAGE_ALIGN(range->size);
949
950 __ioremap_explicit(phb_io_base_phys,
951 (unsigned long) phb_io_base_virt,
952 size, _PAGE_NO_CACHE | _PAGE_GUARDED);
953 }
954}
955
956void __devinit pci_process_bridge_OF_ranges(struct pci_controller *hose, 594void __devinit pci_process_bridge_OF_ranges(struct pci_controller *hose,
957 struct device_node *dev, int prim) 595 struct device_node *dev, int prim)
958{ 596{
@@ -1047,155 +685,122 @@ void __devinit pci_process_bridge_OF_ranges(struct pci_controller *hose,
1047 } 685 }
1048} 686}
1049 687
1050void __devinit pci_setup_phb_io(struct pci_controller *hose, int primary) 688#ifdef CONFIG_HOTPLUG
689
690int pcibios_unmap_io_space(struct pci_bus *bus)
1051{ 691{
1052 unsigned long size = hose->pci_io_size; 692 struct pci_controller *hose;
1053 unsigned long io_virt_offset;
1054 struct resource *res;
1055 struct device_node *isa_dn;
1056 693
1057 if (size == 0) 694 WARN_ON(bus == NULL);
1058 return;
1059 695
1060 hose->io_base_virt = reserve_phb_iospace(size); 696 /* If this is not a PHB, we only flush the hash table over
1061 DBG("phb%d io_base_phys 0x%lx io_base_virt 0x%lx\n", 697 * the area mapped by this bridge. We don't play with the PTE
1062 hose->global_number, hose->io_base_phys, 698 * mappings since we might have to deal with sub-page alignemnts
1063 (unsigned long) hose->io_base_virt); 699 * so flushing the hash table is the only sane way to make sure
1064 700 * that no hash entries are covering that removed bridge area
1065 if (primary) { 701 * while still allowing other busses overlapping those pages
1066 pci_io_base = (unsigned long)hose->io_base_virt; 702 */
1067 isa_dn = of_find_node_by_type(NULL, "isa"); 703 if (bus->self) {
1068 if (isa_dn) { 704 struct resource *res = bus->resource[0];
1069 isa_io_base = pci_io_base;
1070 pci_process_ISA_OF_ranges(isa_dn, hose->io_base_phys,
1071 hose->io_base_virt);
1072 of_node_put(isa_dn);
1073 }
1074 }
1075 705
1076 io_virt_offset = (unsigned long)hose->io_base_virt - pci_io_base; 706 DBG("IO unmapping for PCI-PCI bridge %s\n",
1077 res = &hose->io_resource; 707 pci_name(bus->self));
1078 res->start += io_virt_offset;
1079 res->end += io_virt_offset;
1080 708
1081 /* If this is called after the initial PCI scan, then we need to 709 __flush_hash_table_range(&init_mm, res->start + _IO_BASE,
1082 * proceed to IO mappings now 710 res->end - res->start + 1);
1083 */ 711 return 0;
1084 if (pci_initial_scan_done) 712 }
1085 __ioremap_explicit(hose->io_base_phys,
1086 (unsigned long)hose->io_base_virt,
1087 hose->pci_io_size,
1088 _PAGE_NO_CACHE | _PAGE_GUARDED);
1089}
1090 713
1091void __devinit pci_setup_phb_io_dynamic(struct pci_controller *hose, 714 /* Get the host bridge */
1092 int primary) 715 hose = pci_bus_to_host(bus);
1093{
1094 unsigned long size = hose->pci_io_size;
1095 unsigned long io_virt_offset;
1096 struct resource *res;
1097 716
1098 if (size == 0) 717 /* Check if we have IOs allocated */
1099 return; 718 if (hose->io_base_alloc == 0)
719 return 0;
1100 720
1101 hose->io_base_virt = __ioremap(hose->io_base_phys, size, 721 DBG("IO unmapping for PHB %s\n",
1102 _PAGE_NO_CACHE | _PAGE_GUARDED); 722 ((struct device_node *)hose->arch_data)->full_name);
1103 DBG("phb%d io_base_phys 0x%lx io_base_virt 0x%lx\n", 723 DBG(" alloc=0x%p\n", hose->io_base_alloc);
1104 hose->global_number, hose->io_base_phys,
1105 (unsigned long) hose->io_base_virt);
1106 724
1107 if (primary) 725 /* This is a PHB, we fully unmap the IO area */
1108 pci_io_base = (unsigned long)hose->io_base_virt; 726 vunmap(hose->io_base_alloc);
1109 727
1110 io_virt_offset = (unsigned long)hose->io_base_virt - pci_io_base; 728 return 0;
1111 res = &hose->io_resource;
1112 res->start += io_virt_offset;
1113 res->end += io_virt_offset;
1114} 729}
730EXPORT_SYMBOL_GPL(pcibios_unmap_io_space);
1115 731
732#endif /* CONFIG_HOTPLUG */
1116 733
1117static int get_bus_io_range(struct pci_bus *bus, unsigned long *start_phys, 734int __devinit pcibios_map_io_space(struct pci_bus *bus)
1118 unsigned long *start_virt, unsigned long *size)
1119{ 735{
1120 struct pci_controller *hose = pci_bus_to_host(bus); 736 struct vm_struct *area;
1121 struct resource *res; 737 unsigned long phys_page;
1122 738 unsigned long size_page;
1123 if (bus->self) 739 unsigned long io_virt_offset;
1124 res = bus->resource[0]; 740 struct pci_controller *hose;
1125 else
1126 /* Root Bus */
1127 res = &hose->io_resource;
1128
1129 if (res->end == 0 && res->start == 0)
1130 return 1;
1131 741
1132 *start_virt = pci_io_base + res->start; 742 WARN_ON(bus == NULL);
1133 *start_phys = *start_virt + hose->io_base_phys
1134 - (unsigned long) hose->io_base_virt;
1135 743
1136 if (res->end > res->start) 744 /* If this not a PHB, nothing to do, page tables still exist and
1137 *size = res->end - res->start + 1; 745 * thus HPTEs will be faulted in when needed
1138 else { 746 */
1139 printk("%s(): unexpected region 0x%lx->0x%lx\n", 747 if (bus->self) {
1140 __FUNCTION__, res->start, res->end); 748 DBG("IO mapping for PCI-PCI bridge %s\n",
1141 return 1; 749 pci_name(bus->self));
750 DBG(" virt=0x%016lx...0x%016lx\n",
751 bus->resource[0]->start + _IO_BASE,
752 bus->resource[0]->end + _IO_BASE);
753 return 0;
1142 } 754 }
1143 755
1144 return 0; 756 /* Get the host bridge */
1145} 757 hose = pci_bus_to_host(bus);
1146 758 phys_page = _ALIGN_DOWN(hose->io_base_phys, PAGE_SIZE);
1147int unmap_bus_range(struct pci_bus *bus) 759 size_page = _ALIGN_UP(hose->pci_io_size, PAGE_SIZE);
1148{
1149 unsigned long start_phys;
1150 unsigned long start_virt;
1151 unsigned long size;
1152 760
1153 if (!bus) { 761 /* Make sure IO area address is clear */
1154 printk(KERN_ERR "%s() expected bus\n", __FUNCTION__); 762 hose->io_base_alloc = NULL;
1155 return 1;
1156 }
1157
1158 if (get_bus_io_range(bus, &start_phys, &start_virt, &size))
1159 return 1;
1160 if (__iounmap_explicit((void __iomem *) start_virt, size))
1161 return 1;
1162
1163 return 0;
1164}
1165EXPORT_SYMBOL(unmap_bus_range);
1166 763
1167int remap_bus_range(struct pci_bus *bus) 764 /* If there's no IO to map on that bus, get away too */
1168{ 765 if (hose->pci_io_size == 0 || hose->io_base_phys == 0)
1169 unsigned long start_phys; 766 return 0;
1170 unsigned long start_virt;
1171 unsigned long size;
1172 767
1173 if (!bus) { 768 /* Let's allocate some IO space for that guy. We don't pass
1174 printk(KERN_ERR "%s() expected bus\n", __FUNCTION__); 769 * VM_IOREMAP because we don't care about alignment tricks that
1175 return 1; 770 * the core does in that case. Maybe we should due to stupid card
1176 } 771 * with incomplete address decoding but I'd rather not deal with
1177 772 * those outside of the reserved 64K legacy region.
1178 773 */
1179 if (get_bus_io_range(bus, &start_phys, &start_virt, &size)) 774 area = __get_vm_area(size_page, 0, PHB_IO_BASE, PHB_IO_END);
1180 return 1; 775 if (area == NULL)
1181 if (start_phys == 0) 776 return -ENOMEM;
1182 return 1; 777 hose->io_base_alloc = area->addr;
1183 printk(KERN_DEBUG "mapping IO %lx -> %lx, size: %lx\n", start_phys, start_virt, size); 778 hose->io_base_virt = (void __iomem *)(area->addr +
1184 if (__ioremap_explicit(start_phys, start_virt, size, 779 hose->io_base_phys - phys_page);
1185 _PAGE_NO_CACHE | _PAGE_GUARDED)) 780
1186 return 1; 781 DBG("IO mapping for PHB %s\n",
782 ((struct device_node *)hose->arch_data)->full_name);
783 DBG(" phys=0x%016lx, virt=0x%p (alloc=0x%p)\n",
784 hose->io_base_phys, hose->io_base_virt, hose->io_base_alloc);
785 DBG(" size=0x%016lx (alloc=0x%016lx)\n",
786 hose->pci_io_size, size_page);
787
788 /* Establish the mapping */
789 if (__ioremap_at(phys_page, area->addr, size_page,
790 _PAGE_NO_CACHE | _PAGE_GUARDED) == NULL)
791 return -ENOMEM;
792
793 /* Fixup hose IO resource */
794 io_virt_offset = (unsigned long)hose->io_base_virt - _IO_BASE;
795 hose->io_resource.start += io_virt_offset;
796 hose->io_resource.end += io_virt_offset;
797
798 DBG(" hose->io_resource=0x%016lx...0x%016lx\n",
799 hose->io_resource.start, hose->io_resource.end);
1187 800
1188 return 0; 801 return 0;
1189} 802}
1190EXPORT_SYMBOL(remap_bus_range); 803EXPORT_SYMBOL_GPL(pcibios_map_io_space);
1191
1192static void phbs_remap_io(void)
1193{
1194 struct pci_controller *hose, *tmp;
1195
1196 list_for_each_entry_safe(hose, tmp, &hose_list, list_node)
1197 remap_bus_range(hose->bus);
1198}
1199 804
1200static void __devinit fixup_resource(struct resource *res, struct pci_dev *dev) 805static void __devinit fixup_resource(struct resource *res, struct pci_dev *dev)
1201{ 806{
@@ -1203,8 +808,7 @@ static void __devinit fixup_resource(struct resource *res, struct pci_dev *dev)
1203 unsigned long offset; 808 unsigned long offset;
1204 809
1205 if (res->flags & IORESOURCE_IO) { 810 if (res->flags & IORESOURCE_IO) {
1206 offset = (unsigned long)hose->io_base_virt - pci_io_base; 811 offset = (unsigned long)hose->io_base_virt - _IO_BASE;
1207
1208 res->start += offset; 812 res->start += offset;
1209 res->end += offset; 813 res->end += offset;
1210 } else if (res->flags & IORESOURCE_MEM) { 814 } else if (res->flags & IORESOURCE_MEM) {
@@ -1219,9 +823,20 @@ void __devinit pcibios_fixup_device_resources(struct pci_dev *dev,
1219 /* Update device resources. */ 823 /* Update device resources. */
1220 int i; 824 int i;
1221 825
1222 for (i = 0; i < PCI_NUM_RESOURCES; i++) 826 DBG("%s: Fixup resources:\n", pci_name(dev));
1223 if (dev->resource[i].flags) 827 for (i = 0; i < PCI_NUM_RESOURCES; i++) {
1224 fixup_resource(&dev->resource[i], dev); 828 struct resource *res = &dev->resource[i];
829 if (!res->flags)
830 continue;
831
832 DBG(" 0x%02x < %08lx:0x%016lx...0x%016lx\n",
833 i, res->flags, res->start, res->end);
834
835 fixup_resource(res, dev);
836
837 DBG(" > %08lx:0x%016lx...0x%016lx\n",
838 res->flags, res->start, res->end);
839 }
1225} 840}
1226EXPORT_SYMBOL(pcibios_fixup_device_resources); 841EXPORT_SYMBOL(pcibios_fixup_device_resources);
1227 842
@@ -1291,119 +906,6 @@ void __devinit pcibios_fixup_bus(struct pci_bus *bus)
1291} 906}
1292EXPORT_SYMBOL(pcibios_fixup_bus); 907EXPORT_SYMBOL(pcibios_fixup_bus);
1293 908
1294/*
1295 * Reads the interrupt pin to determine if interrupt is use by card.
1296 * If the interrupt is used, then gets the interrupt line from the
1297 * openfirmware and sets it in the pci_dev and pci_config line.
1298 */
1299int pci_read_irq_line(struct pci_dev *pci_dev)
1300{
1301 struct of_irq oirq;
1302 unsigned int virq;
1303
1304 DBG("Try to map irq for %s...\n", pci_name(pci_dev));
1305
1306#ifdef DEBUG
1307 memset(&oirq, 0xff, sizeof(oirq));
1308#endif
1309 /* Try to get a mapping from the device-tree */
1310 if (of_irq_map_pci(pci_dev, &oirq)) {
1311 u8 line, pin;
1312
1313 /* If that fails, lets fallback to what is in the config
1314 * space and map that through the default controller. We
1315 * also set the type to level low since that's what PCI
1316 * interrupts are. If your platform does differently, then
1317 * either provide a proper interrupt tree or don't use this
1318 * function.
1319 */
1320 if (pci_read_config_byte(pci_dev, PCI_INTERRUPT_PIN, &pin))
1321 return -1;
1322 if (pin == 0)
1323 return -1;
1324 if (pci_read_config_byte(pci_dev, PCI_INTERRUPT_LINE, &line) ||
1325 line == 0xff) {
1326 return -1;
1327 }
1328 DBG(" -> no map ! Using irq line %d from PCI config\n", line);
1329
1330 virq = irq_create_mapping(NULL, line);
1331 if (virq != NO_IRQ)
1332 set_irq_type(virq, IRQ_TYPE_LEVEL_LOW);
1333 } else {
1334 DBG(" -> got one, spec %d cells (0x%08x 0x%08x...) on %s\n",
1335 oirq.size, oirq.specifier[0], oirq.specifier[1],
1336 oirq.controller->full_name);
1337
1338 virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
1339 oirq.size);
1340 }
1341 if(virq == NO_IRQ) {
1342 DBG(" -> failed to map !\n");
1343 return -1;
1344 }
1345
1346 DBG(" -> mapped to linux irq %d\n", virq);
1347
1348 pci_dev->irq = virq;
1349
1350 return 0;
1351}
1352EXPORT_SYMBOL(pci_read_irq_line);
1353
1354void pci_resource_to_user(const struct pci_dev *dev, int bar,
1355 const struct resource *rsrc,
1356 resource_size_t *start, resource_size_t *end)
1357{
1358 struct pci_controller *hose = pci_bus_to_host(dev->bus);
1359 resource_size_t offset = 0;
1360
1361 if (hose == NULL)
1362 return;
1363
1364 if (rsrc->flags & IORESOURCE_IO)
1365 offset = (unsigned long)hose->io_base_virt - pci_io_base;
1366
1367 /* We pass a fully fixed up address to userland for MMIO instead of
1368 * a BAR value because X is lame and expects to be able to use that
1369 * to pass to /dev/mem !
1370 *
1371 * That means that we'll have potentially 64 bits values where some
1372 * userland apps only expect 32 (like X itself since it thinks only
1373 * Sparc has 64 bits MMIO) but if we don't do that, we break it on
1374 * 32 bits CHRPs :-(
1375 *
1376 * Hopefully, the sysfs insterface is immune to that gunk. Once X
1377 * has been fixed (and the fix spread enough), we can re-enable the
1378 * 2 lines below and pass down a BAR value to userland. In that case
1379 * we'll also have to re-enable the matching code in
1380 * __pci_mmap_make_offset().
1381 *
1382 * BenH.
1383 */
1384#if 0
1385 else if (rsrc->flags & IORESOURCE_MEM)
1386 offset = hose->pci_mem_offset;
1387#endif
1388
1389 *start = rsrc->start - offset;
1390 *end = rsrc->end - offset;
1391}
1392
1393struct pci_controller* pci_find_hose_for_OF_device(struct device_node* node)
1394{
1395 if (!have_of)
1396 return NULL;
1397 while(node) {
1398 struct pci_controller *hose, *tmp;
1399 list_for_each_entry_safe(hose, tmp, &hose_list, list_node)
1400 if (hose->arch_data == node)
1401 return hose;
1402 node = node->parent;
1403 }
1404 return NULL;
1405}
1406
1407unsigned long pci_address_to_pio(phys_addr_t address) 909unsigned long pci_address_to_pio(phys_addr_t address)
1408{ 910{
1409 struct pci_controller *hose, *tmp; 911 struct pci_controller *hose, *tmp;
@@ -1412,7 +914,7 @@ unsigned long pci_address_to_pio(phys_addr_t address)
1412 if (address >= hose->io_base_phys && 914 if (address >= hose->io_base_phys &&
1413 address < (hose->io_base_phys + hose->pci_io_size)) { 915 address < (hose->io_base_phys + hose->pci_io_size)) {
1414 unsigned long base = 916 unsigned long base =
1415 (unsigned long)hose->io_base_virt - pci_io_base; 917 (unsigned long)hose->io_base_virt - _IO_BASE;
1416 return base + (address - hose->io_base_phys); 918 return base + (address - hose->io_base_phys);
1417 } 919 }
1418 } 920 }
diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c
index c96fa9bd35a4..a20f1951a5ce 100644
--- a/arch/powerpc/kernel/ppc_ksyms.c
+++ b/arch/powerpc/kernel/ppc_ksyms.c
@@ -67,7 +67,6 @@ EXPORT_SYMBOL(ISA_DMA_THRESHOLD);
67EXPORT_SYMBOL(DMA_MODE_READ); 67EXPORT_SYMBOL(DMA_MODE_READ);
68EXPORT_SYMBOL(DMA_MODE_WRITE); 68EXPORT_SYMBOL(DMA_MODE_WRITE);
69 69
70EXPORT_SYMBOL(do_signal);
71EXPORT_SYMBOL(transfer_to_handler); 70EXPORT_SYMBOL(transfer_to_handler);
72EXPORT_SYMBOL(do_IRQ); 71EXPORT_SYMBOL(do_IRQ);
73EXPORT_SYMBOL(machine_check_exception); 72EXPORT_SYMBOL(machine_check_exception);
@@ -106,10 +105,6 @@ EXPORT_SYMBOL(isa_mem_base);
106EXPORT_SYMBOL(pci_dram_offset); 105EXPORT_SYMBOL(pci_dram_offset);
107EXPORT_SYMBOL(pci_alloc_consistent); 106EXPORT_SYMBOL(pci_alloc_consistent);
108EXPORT_SYMBOL(pci_free_consistent); 107EXPORT_SYMBOL(pci_free_consistent);
109EXPORT_SYMBOL(pci_bus_io_base);
110EXPORT_SYMBOL(pci_bus_io_base_phys);
111EXPORT_SYMBOL(pci_bus_mem_base_phys);
112EXPORT_SYMBOL(pci_bus_to_hose);
113#endif /* CONFIG_PCI */ 108#endif /* CONFIG_PCI */
114 109
115EXPORT_SYMBOL(start_thread); 110EXPORT_SYMBOL(start_thread);
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 6e2f03566b0d..84f000a45e36 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -219,22 +219,26 @@ void discard_lazy_cpu_state(void)
219} 219}
220#endif /* CONFIG_SMP */ 220#endif /* CONFIG_SMP */
221 221
222#ifdef CONFIG_PPC_MERGE /* XXX for now */
223int set_dabr(unsigned long dabr) 222int set_dabr(unsigned long dabr)
224{ 223{
224#ifdef CONFIG_PPC_MERGE /* XXX for now */
225 if (ppc_md.set_dabr) 225 if (ppc_md.set_dabr)
226 return ppc_md.set_dabr(dabr); 226 return ppc_md.set_dabr(dabr);
227#endif
227 228
229 /* XXX should we have a CPU_FTR_HAS_DABR ? */
230#if defined(CONFIG_PPC64) || defined(CONFIG_6xx)
228 mtspr(SPRN_DABR, dabr); 231 mtspr(SPRN_DABR, dabr);
232#endif
229 return 0; 233 return 0;
230} 234}
231#endif
232 235
233#ifdef CONFIG_PPC64 236#ifdef CONFIG_PPC64
234DEFINE_PER_CPU(struct cpu_usage, cpu_usage_array); 237DEFINE_PER_CPU(struct cpu_usage, cpu_usage_array);
235static DEFINE_PER_CPU(unsigned long, current_dabr);
236#endif 238#endif
237 239
240static DEFINE_PER_CPU(unsigned long, current_dabr);
241
238struct task_struct *__switch_to(struct task_struct *prev, 242struct task_struct *__switch_to(struct task_struct *prev,
239 struct task_struct *new) 243 struct task_struct *new)
240{ 244{
@@ -299,12 +303,10 @@ struct task_struct *__switch_to(struct task_struct *prev,
299 303
300#endif /* CONFIG_SMP */ 304#endif /* CONFIG_SMP */
301 305
302#ifdef CONFIG_PPC64 /* for now */
303 if (unlikely(__get_cpu_var(current_dabr) != new->thread.dabr)) { 306 if (unlikely(__get_cpu_var(current_dabr) != new->thread.dabr)) {
304 set_dabr(new->thread.dabr); 307 set_dabr(new->thread.dabr);
305 __get_cpu_var(current_dabr) = new->thread.dabr; 308 __get_cpu_var(current_dabr) = new->thread.dabr;
306 } 309 }
307#endif /* CONFIG_PPC64 */
308 310
309 new_thread = &new->thread; 311 new_thread = &new->thread;
310 old_thread = &current->thread; 312 old_thread = &current->thread;
@@ -473,12 +475,10 @@ void flush_thread(void)
473 475
474 discard_lazy_cpu_state(); 476 discard_lazy_cpu_state();
475 477
476#ifdef CONFIG_PPC64 /* for now */
477 if (current->thread.dabr) { 478 if (current->thread.dabr) {
478 current->thread.dabr = 0; 479 current->thread.dabr = 0;
479 set_dabr(0); 480 set_dabr(0);
480 } 481 }
481#endif
482} 482}
483 483
484void 484void
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index af42ddab3ab4..37ff99bd98b4 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -52,6 +52,7 @@
52#include <asm/pSeries_reconfig.h> 52#include <asm/pSeries_reconfig.h>
53#include <asm/pci-bridge.h> 53#include <asm/pci-bridge.h>
54#include <asm/kexec.h> 54#include <asm/kexec.h>
55#include <asm/system.h>
55 56
56#ifdef DEBUG 57#ifdef DEBUG
57#define DBG(fmt...) printk(KERN_ERR fmt) 58#define DBG(fmt...) printk(KERN_ERR fmt)
@@ -1005,7 +1006,7 @@ static void __init early_reserve_mem(void)
1005 1006
1006void __init early_init_devtree(void *params) 1007void __init early_init_devtree(void *params)
1007{ 1008{
1008 DBG(" -> early_init_devtree()\n"); 1009 DBG(" -> early_init_devtree(%p)\n", params);
1009 1010
1010 /* Setup flat device-tree pointer */ 1011 /* Setup flat device-tree pointer */
1011 initial_boot_params = params; 1012 initial_boot_params = params;
@@ -1055,8 +1056,6 @@ void __init early_init_devtree(void *params)
1055 DBG(" <- early_init_devtree()\n"); 1056 DBG(" <- early_init_devtree()\n");
1056} 1057}
1057 1058
1058#undef printk
1059
1060int of_n_addr_cells(struct device_node* np) 1059int of_n_addr_cells(struct device_node* np)
1061{ 1060{
1062 const int *ip; 1061 const int *ip;
@@ -1375,8 +1374,17 @@ static void of_node_release(struct kref *kref)
1375 struct device_node *node = kref_to_device_node(kref); 1374 struct device_node *node = kref_to_device_node(kref);
1376 struct property *prop = node->properties; 1375 struct property *prop = node->properties;
1377 1376
1378 if (!OF_IS_DYNAMIC(node)) 1377 /* We should never be releasing nodes that haven't been detached. */
1378 if (!of_node_check_flag(node, OF_DETACHED)) {
1379 printk("WARNING: Bad of_node_put() on %s\n", node->full_name);
1380 dump_stack();
1381 kref_init(&node->kref);
1382 return;
1383 }
1384
1385 if (!of_node_check_flag(node, OF_DYNAMIC))
1379 return; 1386 return;
1387
1380 while (prop) { 1388 while (prop) {
1381 struct property *next = prop->next; 1389 struct property *next = prop->next;
1382 kfree(prop->name); 1390 kfree(prop->name);
@@ -1432,6 +1440,8 @@ void of_detach_node(const struct device_node *np)
1432 write_lock(&devtree_lock); 1440 write_lock(&devtree_lock);
1433 1441
1434 parent = np->parent; 1442 parent = np->parent;
1443 if (!parent)
1444 goto out_unlock;
1435 1445
1436 if (allnodes == np) 1446 if (allnodes == np)
1437 allnodes = np->allnext; 1447 allnodes = np->allnext;
@@ -1455,6 +1465,9 @@ void of_detach_node(const struct device_node *np)
1455 prevsib->sibling = np->sibling; 1465 prevsib->sibling = np->sibling;
1456 } 1466 }
1457 1467
1468 of_node_set_flag(np, OF_DETACHED);
1469
1470out_unlock:
1458 write_unlock(&devtree_lock); 1471 write_unlock(&devtree_lock);
1459} 1472}
1460 1473
@@ -1716,22 +1729,18 @@ struct device_node *of_get_cpu_node(int cpu, unsigned int *thread)
1716} 1729}
1717EXPORT_SYMBOL(of_get_cpu_node); 1730EXPORT_SYMBOL(of_get_cpu_node);
1718 1731
1719#ifdef DEBUG 1732#if defined(CONFIG_DEBUG_FS) && defined(DEBUG)
1720static struct debugfs_blob_wrapper flat_dt_blob; 1733static struct debugfs_blob_wrapper flat_dt_blob;
1721 1734
1722static int __init export_flat_device_tree(void) 1735static int __init export_flat_device_tree(void)
1723{ 1736{
1724 struct dentry *d; 1737 struct dentry *d;
1725 1738
1726 d = debugfs_create_dir("powerpc", NULL);
1727 if (!d)
1728 return 1;
1729
1730 flat_dt_blob.data = initial_boot_params; 1739 flat_dt_blob.data = initial_boot_params;
1731 flat_dt_blob.size = initial_boot_params->totalsize; 1740 flat_dt_blob.size = initial_boot_params->totalsize;
1732 1741
1733 d = debugfs_create_blob("flat-device-tree", S_IFREG | S_IRUSR, 1742 d = debugfs_create_blob("flat-device-tree", S_IFREG | S_IRUSR,
1734 d, &flat_dt_blob); 1743 powerpc_debugfs_root, &flat_dt_blob);
1735 if (!d) 1744 if (!d)
1736 return 1; 1745 return 1;
1737 1746
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index d6047c441034..a1d582e38627 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -635,6 +635,7 @@ static void __init early_cmdline_parse(void)
635/* ibm,dynamic-reconfiguration-memory property supported */ 635/* ibm,dynamic-reconfiguration-memory property supported */
636#define OV5_DRCONF_MEMORY 0x20 636#define OV5_DRCONF_MEMORY 0x20
637#define OV5_LARGE_PAGES 0x10 /* large pages supported */ 637#define OV5_LARGE_PAGES 0x10 /* large pages supported */
638#define OV5_DONATE_DEDICATE_CPU 0x02 /* donate dedicated CPU support */
638/* PCIe/MSI support. Without MSI full PCIe is not supported */ 639/* PCIe/MSI support. Without MSI full PCIe is not supported */
639#ifdef CONFIG_PCI_MSI 640#ifdef CONFIG_PCI_MSI
640#define OV5_MSI 0x01 /* PCIe/MSI support */ 641#define OV5_MSI 0x01 /* PCIe/MSI support */
@@ -685,7 +686,8 @@ static unsigned char ibm_architecture_vec[] = {
685 /* option vector 5: PAPR/OF options */ 686 /* option vector 5: PAPR/OF options */
686 3 - 2, /* length */ 687 3 - 2, /* length */
687 0, /* don't ignore, don't halt */ 688 0, /* don't ignore, don't halt */
688 OV5_LPAR | OV5_SPLPAR | OV5_LARGE_PAGES | OV5_DRCONF_MEMORY | OV5_MSI, 689 OV5_LPAR | OV5_SPLPAR | OV5_LARGE_PAGES | OV5_DRCONF_MEMORY |
690 OV5_DONATE_DEDICATE_CPU | OV5_MSI,
689}; 691};
690 692
691/* Old method - ELF header with PT_NOTE sections */ 693/* Old method - ELF header with PT_NOTE sections */
diff --git a/arch/powerpc/kernel/ptrace-common.h b/arch/powerpc/kernel/ptrace-common.h
deleted file mode 100644
index 8797ae737a7b..000000000000
--- a/arch/powerpc/kernel/ptrace-common.h
+++ /dev/null
@@ -1,161 +0,0 @@
1/*
2 * Copyright (c) 2002 Stephen Rothwell, IBM Coproration
3 * Extracted from ptrace.c and ptrace32.c
4 *
5 * This file is subject to the terms and conditions of the GNU General
6 * Public License. See the file README.legal in the main directory of
7 * this archive for more details.
8 */
9
10#ifndef _PPC64_PTRACE_COMMON_H
11#define _PPC64_PTRACE_COMMON_H
12
13#include <asm/system.h>
14
15/*
16 * Set of msr bits that gdb can change on behalf of a process.
17 */
18#define MSR_DEBUGCHANGE (MSR_FE0 | MSR_SE | MSR_BE | MSR_FE1)
19
20/*
21 * Get contents of register REGNO in task TASK.
22 */
23static inline unsigned long get_reg(struct task_struct *task, int regno)
24{
25 unsigned long tmp = 0;
26
27 /*
28 * Put the correct FP bits in, they might be wrong as a result
29 * of our lazy FP restore.
30 */
31 if (regno == PT_MSR) {
32 tmp = ((unsigned long *)task->thread.regs)[PT_MSR];
33 tmp |= task->thread.fpexc_mode;
34 } else if (regno < (sizeof(struct pt_regs) / sizeof(unsigned long))) {
35 tmp = ((unsigned long *)task->thread.regs)[regno];
36 }
37
38 return tmp;
39}
40
41/*
42 * Write contents of register REGNO in task TASK.
43 */
44static inline int put_reg(struct task_struct *task, int regno,
45 unsigned long data)
46{
47 if (regno < PT_SOFTE) {
48 if (regno == PT_MSR)
49 data = (data & MSR_DEBUGCHANGE)
50 | (task->thread.regs->msr & ~MSR_DEBUGCHANGE);
51 ((unsigned long *)task->thread.regs)[regno] = data;
52 return 0;
53 }
54 return -EIO;
55}
56
57static inline void set_single_step(struct task_struct *task)
58{
59 struct pt_regs *regs = task->thread.regs;
60 if (regs != NULL)
61 regs->msr |= MSR_SE;
62 set_tsk_thread_flag(task, TIF_SINGLESTEP);
63}
64
65static inline void clear_single_step(struct task_struct *task)
66{
67 struct pt_regs *regs = task->thread.regs;
68 if (regs != NULL)
69 regs->msr &= ~MSR_SE;
70 clear_tsk_thread_flag(task, TIF_SINGLESTEP);
71}
72
73#ifdef CONFIG_ALTIVEC
74/*
75 * Get/set all the altivec registers vr0..vr31, vscr, vrsave, in one go.
76 * The transfer totals 34 quadword. Quadwords 0-31 contain the
77 * corresponding vector registers. Quadword 32 contains the vscr as the
78 * last word (offset 12) within that quadword. Quadword 33 contains the
79 * vrsave as the first word (offset 0) within the quadword.
80 *
81 * This definition of the VMX state is compatible with the current PPC32
82 * ptrace interface. This allows signal handling and ptrace to use the
83 * same structures. This also simplifies the implementation of a bi-arch
84 * (combined (32- and 64-bit) gdb.
85 */
86
87/*
88 * Get contents of AltiVec register state in task TASK
89 */
90static inline int get_vrregs(unsigned long __user *data,
91 struct task_struct *task)
92{
93 unsigned long regsize;
94
95 /* copy AltiVec registers VR[0] .. VR[31] */
96 regsize = 32 * sizeof(vector128);
97 if (copy_to_user(data, task->thread.vr, regsize))
98 return -EFAULT;
99 data += (regsize / sizeof(unsigned long));
100
101 /* copy VSCR */
102 regsize = 1 * sizeof(vector128);
103 if (copy_to_user(data, &task->thread.vscr, regsize))
104 return -EFAULT;
105 data += (regsize / sizeof(unsigned long));
106
107 /* copy VRSAVE */
108 if (put_user(task->thread.vrsave, (u32 __user *)data))
109 return -EFAULT;
110
111 return 0;
112}
113
114/*
115 * Write contents of AltiVec register state into task TASK.
116 */
117static inline int set_vrregs(struct task_struct *task,
118 unsigned long __user *data)
119{
120 unsigned long regsize;
121
122 /* copy AltiVec registers VR[0] .. VR[31] */
123 regsize = 32 * sizeof(vector128);
124 if (copy_from_user(task->thread.vr, data, regsize))
125 return -EFAULT;
126 data += (regsize / sizeof(unsigned long));
127
128 /* copy VSCR */
129 regsize = 1 * sizeof(vector128);
130 if (copy_from_user(&task->thread.vscr, data, regsize))
131 return -EFAULT;
132 data += (regsize / sizeof(unsigned long));
133
134 /* copy VRSAVE */
135 if (get_user(task->thread.vrsave, (u32 __user *)data))
136 return -EFAULT;
137
138 return 0;
139}
140#endif
141
142static inline int ptrace_set_debugreg(struct task_struct *task,
143 unsigned long addr, unsigned long data)
144{
145 /* We only support one DABR and no IABRS at the moment */
146 if (addr > 0)
147 return -EINVAL;
148
149 /* The bottom 3 bits are flags */
150 if ((data & ~0x7UL) >= TASK_SIZE)
151 return -EIO;
152
153 /* Ensure translation is on */
154 if (data && !(data & DABR_TRANSLATION))
155 return -EIO;
156
157 task->thread.dabr = data;
158 return 0;
159}
160
161#endif /* _PPC64_PTRACE_COMMON_H */
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index bf76562167c3..0fb53950da43 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -35,11 +35,11 @@
35#include <asm/pgtable.h> 35#include <asm/pgtable.h>
36#include <asm/system.h> 36#include <asm/system.h>
37 37
38#ifdef CONFIG_PPC64 38/*
39#include "ptrace-common.h" 39 * does not yet catch signals sent when the child dies.
40#endif 40 * in exit.c or in signal.c.
41 */
41 42
42#ifdef CONFIG_PPC32
43/* 43/*
44 * Set of msr bits that gdb can change on behalf of a process. 44 * Set of msr bits that gdb can change on behalf of a process.
45 */ 45 */
@@ -48,65 +48,117 @@
48#else 48#else
49#define MSR_DEBUGCHANGE (MSR_SE | MSR_BE) 49#define MSR_DEBUGCHANGE (MSR_SE | MSR_BE)
50#endif 50#endif
51#endif /* CONFIG_PPC32 */
52 51
53/* 52/*
54 * does not yet catch signals sent when the child dies. 53 * Max register writeable via put_reg
55 * in exit.c or in signal.c.
56 */ 54 */
57
58#ifdef CONFIG_PPC32 55#ifdef CONFIG_PPC32
56#define PT_MAX_PUT_REG PT_MQ
57#else
58#define PT_MAX_PUT_REG PT_CCR
59#endif
60
59/* 61/*
60 * Get contents of register REGNO in task TASK. 62 * Get contents of register REGNO in task TASK.
61 */ 63 */
62static inline unsigned long get_reg(struct task_struct *task, int regno) 64unsigned long ptrace_get_reg(struct task_struct *task, int regno)
63{ 65{
64 if (regno < sizeof(struct pt_regs) / sizeof(unsigned long) 66 unsigned long tmp = 0;
65 && task->thread.regs != NULL) 67
68 if (task->thread.regs == NULL)
69 return -EIO;
70
71 if (regno == PT_MSR) {
72 tmp = ((unsigned long *)task->thread.regs)[PT_MSR];
73 return tmp | task->thread.fpexc_mode;
74 }
75
76 if (regno < (sizeof(struct pt_regs) / sizeof(unsigned long)))
66 return ((unsigned long *)task->thread.regs)[regno]; 77 return ((unsigned long *)task->thread.regs)[regno];
67 return (0); 78
79 return -EIO;
68} 80}
69 81
70/* 82/*
71 * Write contents of register REGNO in task TASK. 83 * Write contents of register REGNO in task TASK.
72 */ 84 */
73static inline int put_reg(struct task_struct *task, int regno, 85int ptrace_put_reg(struct task_struct *task, int regno, unsigned long data)
74 unsigned long data)
75{ 86{
76 if (regno <= PT_MQ && task->thread.regs != NULL) { 87 if (task->thread.regs == NULL)
88 return -EIO;
89
90 if (regno <= PT_MAX_PUT_REG || regno == PT_TRAP) {
77 if (regno == PT_MSR) 91 if (regno == PT_MSR)
78 data = (data & MSR_DEBUGCHANGE) 92 data = (data & MSR_DEBUGCHANGE)
79 | (task->thread.regs->msr & ~MSR_DEBUGCHANGE); 93 | (task->thread.regs->msr & ~MSR_DEBUGCHANGE);
94 /* We prevent mucking around with the reserved area of trap
95 * which are used internally by the kernel
96 */
97 if (regno == PT_TRAP)
98 data &= 0xfff0;
80 ((unsigned long *)task->thread.regs)[regno] = data; 99 ((unsigned long *)task->thread.regs)[regno] = data;
81 return 0; 100 return 0;
82 } 101 }
83 return -EIO; 102 return -EIO;
84} 103}
85 104
105
106static int get_fpregs(void __user *data, struct task_struct *task,
107 int has_fpscr)
108{
109 unsigned int count = has_fpscr ? 33 : 32;
110
111 if (copy_to_user(data, task->thread.fpr, count * sizeof(double)))
112 return -EFAULT;
113 return 0;
114}
115
116static int set_fpregs(void __user *data, struct task_struct *task,
117 int has_fpscr)
118{
119 unsigned int count = has_fpscr ? 33 : 32;
120
121 if (copy_from_user(task->thread.fpr, data, count * sizeof(double)))
122 return -EFAULT;
123 return 0;
124}
125
126
86#ifdef CONFIG_ALTIVEC 127#ifdef CONFIG_ALTIVEC
87/* 128/*
129 * Get/set all the altivec registers vr0..vr31, vscr, vrsave, in one go.
130 * The transfer totals 34 quadword. Quadwords 0-31 contain the
131 * corresponding vector registers. Quadword 32 contains the vscr as the
132 * last word (offset 12) within that quadword. Quadword 33 contains the
133 * vrsave as the first word (offset 0) within the quadword.
134 *
135 * This definition of the VMX state is compatible with the current PPC32
136 * ptrace interface. This allows signal handling and ptrace to use the
137 * same structures. This also simplifies the implementation of a bi-arch
138 * (combined (32- and 64-bit) gdb.
139 */
140
141/*
88 * Get contents of AltiVec register state in task TASK 142 * Get contents of AltiVec register state in task TASK
89 */ 143 */
90static inline int get_vrregs(unsigned long __user *data, struct task_struct *task) 144static int get_vrregs(unsigned long __user *data, struct task_struct *task)
91{ 145{
92 int i, j; 146 unsigned long regsize;
93
94 if (!access_ok(VERIFY_WRITE, data, 133 * sizeof(unsigned long)))
95 return -EFAULT;
96 147
97 /* copy AltiVec registers VR[0] .. VR[31] */ 148 /* copy AltiVec registers VR[0] .. VR[31] */
98 for (i = 0; i < 32; i++) 149 regsize = 32 * sizeof(vector128);
99 for (j = 0; j < 4; j++, data++) 150 if (copy_to_user(data, task->thread.vr, regsize))
100 if (__put_user(task->thread.vr[i].u[j], data)) 151 return -EFAULT;
101 return -EFAULT; 152 data += (regsize / sizeof(unsigned long));
102 153
103 /* copy VSCR */ 154 /* copy VSCR */
104 for (i = 0; i < 4; i++, data++) 155 regsize = 1 * sizeof(vector128);
105 if (__put_user(task->thread.vscr.u[i], data)) 156 if (copy_to_user(data, &task->thread.vscr, regsize))
106 return -EFAULT; 157 return -EFAULT;
158 data += (regsize / sizeof(unsigned long));
107 159
108 /* copy VRSAVE */ 160 /* copy VRSAVE */
109 if (__put_user(task->thread.vrsave, data)) 161 if (put_user(task->thread.vrsave, (u32 __user *)data))
110 return -EFAULT; 162 return -EFAULT;
111 163
112 return 0; 164 return 0;
@@ -115,31 +167,29 @@ static inline int get_vrregs(unsigned long __user *data, struct task_struct *tas
115/* 167/*
116 * Write contents of AltiVec register state into task TASK. 168 * Write contents of AltiVec register state into task TASK.
117 */ 169 */
118static inline int set_vrregs(struct task_struct *task, unsigned long __user *data) 170static int set_vrregs(struct task_struct *task, unsigned long __user *data)
119{ 171{
120 int i, j; 172 unsigned long regsize;
121
122 if (!access_ok(VERIFY_READ, data, 133 * sizeof(unsigned long)))
123 return -EFAULT;
124 173
125 /* copy AltiVec registers VR[0] .. VR[31] */ 174 /* copy AltiVec registers VR[0] .. VR[31] */
126 for (i = 0; i < 32; i++) 175 regsize = 32 * sizeof(vector128);
127 for (j = 0; j < 4; j++, data++) 176 if (copy_from_user(task->thread.vr, data, regsize))
128 if (__get_user(task->thread.vr[i].u[j], data)) 177 return -EFAULT;
129 return -EFAULT; 178 data += (regsize / sizeof(unsigned long));
130 179
131 /* copy VSCR */ 180 /* copy VSCR */
132 for (i = 0; i < 4; i++, data++) 181 regsize = 1 * sizeof(vector128);
133 if (__get_user(task->thread.vscr.u[i], data)) 182 if (copy_from_user(&task->thread.vscr, data, regsize))
134 return -EFAULT; 183 return -EFAULT;
184 data += (regsize / sizeof(unsigned long));
135 185
136 /* copy VRSAVE */ 186 /* copy VRSAVE */
137 if (__get_user(task->thread.vrsave, data)) 187 if (get_user(task->thread.vrsave, (u32 __user *)data))
138 return -EFAULT; 188 return -EFAULT;
139 189
140 return 0; 190 return 0;
141} 191}
142#endif 192#endif /* CONFIG_ALTIVEC */
143 193
144#ifdef CONFIG_SPE 194#ifdef CONFIG_SPE
145 195
@@ -156,7 +206,7 @@ static inline int set_vrregs(struct task_struct *task, unsigned long __user *dat
156/* 206/*
157 * Get contents of SPE register state in task TASK. 207 * Get contents of SPE register state in task TASK.
158 */ 208 */
159static inline int get_evrregs(unsigned long *data, struct task_struct *task) 209static int get_evrregs(unsigned long *data, struct task_struct *task)
160{ 210{
161 int i; 211 int i;
162 212
@@ -182,7 +232,7 @@ static inline int get_evrregs(unsigned long *data, struct task_struct *task)
182/* 232/*
183 * Write contents of SPE register state into task TASK. 233 * Write contents of SPE register state into task TASK.
184 */ 234 */
185static inline int set_evrregs(struct task_struct *task, unsigned long *data) 235static int set_evrregs(struct task_struct *task, unsigned long *data)
186{ 236{
187 int i; 237 int i;
188 238
@@ -205,8 +255,8 @@ static inline int set_evrregs(struct task_struct *task, unsigned long *data)
205} 255}
206#endif /* CONFIG_SPE */ 256#endif /* CONFIG_SPE */
207 257
208static inline void 258
209set_single_step(struct task_struct *task) 259static void set_single_step(struct task_struct *task)
210{ 260{
211 struct pt_regs *regs = task->thread.regs; 261 struct pt_regs *regs = task->thread.regs;
212 262
@@ -221,8 +271,7 @@ set_single_step(struct task_struct *task)
221 set_tsk_thread_flag(task, TIF_SINGLESTEP); 271 set_tsk_thread_flag(task, TIF_SINGLESTEP);
222} 272}
223 273
224static inline void 274static void clear_single_step(struct task_struct *task)
225clear_single_step(struct task_struct *task)
226{ 275{
227 struct pt_regs *regs = task->thread.regs; 276 struct pt_regs *regs = task->thread.regs;
228 277
@@ -236,7 +285,25 @@ clear_single_step(struct task_struct *task)
236 } 285 }
237 clear_tsk_thread_flag(task, TIF_SINGLESTEP); 286 clear_tsk_thread_flag(task, TIF_SINGLESTEP);
238} 287}
239#endif /* CONFIG_PPC32 */ 288
289static int ptrace_set_debugreg(struct task_struct *task, unsigned long addr,
290 unsigned long data)
291{
292 /* We only support one DABR and no IABRS at the moment */
293 if (addr > 0)
294 return -EINVAL;
295
296 /* The bottom 3 bits are flags */
297 if ((data & ~0x7UL) >= TASK_SIZE)
298 return -EIO;
299
300 /* Ensure translation is on */
301 if (data && !(data & DABR_TRANSLATION))
302 return -EIO;
303
304 task->thread.dabr = data;
305 return 0;
306}
240 307
241/* 308/*
242 * Called by kernel/ptrace.c when detaching.. 309 * Called by kernel/ptrace.c when detaching..
@@ -249,6 +316,62 @@ void ptrace_disable(struct task_struct *child)
249 clear_single_step(child); 316 clear_single_step(child);
250} 317}
251 318
319/*
320 * Here are the old "legacy" powerpc specific getregs/setregs ptrace calls,
321 * we mark them as obsolete now, they will be removed in a future version
322 */
323static long arch_ptrace_old(struct task_struct *child, long request, long addr,
324 long data)
325{
326 int ret = -EPERM;
327
328 switch(request) {
329 case PPC_PTRACE_GETREGS: { /* Get GPRs 0 - 31. */
330 int i;
331 unsigned long *reg = &((unsigned long *)child->thread.regs)[0];
332 unsigned long __user *tmp = (unsigned long __user *)addr;
333
334 for (i = 0; i < 32; i++) {
335 ret = put_user(*reg, tmp);
336 if (ret)
337 break;
338 reg++;
339 tmp++;
340 }
341 break;
342 }
343
344 case PPC_PTRACE_SETREGS: { /* Set GPRs 0 - 31. */
345 int i;
346 unsigned long *reg = &((unsigned long *)child->thread.regs)[0];
347 unsigned long __user *tmp = (unsigned long __user *)addr;
348
349 for (i = 0; i < 32; i++) {
350 ret = get_user(*reg, tmp);
351 if (ret)
352 break;
353 reg++;
354 tmp++;
355 }
356 break;
357 }
358
359 case PPC_PTRACE_GETFPREGS: { /* Get FPRs 0 - 31. */
360 flush_fp_to_thread(child);
361 ret = get_fpregs((void __user *)addr, child, 0);
362 break;
363 }
364
365 case PPC_PTRACE_SETFPREGS: { /* Get FPRs 0 - 31. */
366 flush_fp_to_thread(child);
367 ret = set_fpregs((void __user *)addr, child, 0);
368 break;
369 }
370
371 }
372 return ret;
373}
374
252long arch_ptrace(struct task_struct *child, long request, long addr, long data) 375long arch_ptrace(struct task_struct *child, long request, long addr, long data)
253{ 376{
254 int ret = -EPERM; 377 int ret = -EPERM;
@@ -284,11 +407,9 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
284#endif 407#endif
285 break; 408 break;
286 409
287#ifdef CONFIG_PPC32
288 CHECK_FULL_REGS(child->thread.regs); 410 CHECK_FULL_REGS(child->thread.regs);
289#endif
290 if (index < PT_FPR0) { 411 if (index < PT_FPR0) {
291 tmp = get_reg(child, (int) index); 412 tmp = ptrace_get_reg(child, (int) index);
292 } else { 413 } else {
293 flush_fp_to_thread(child); 414 flush_fp_to_thread(child);
294 tmp = ((unsigned long *)child->thread.fpr)[index - PT_FPR0]; 415 tmp = ((unsigned long *)child->thread.fpr)[index - PT_FPR0];
@@ -323,13 +444,9 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
323#endif 444#endif
324 break; 445 break;
325 446
326#ifdef CONFIG_PPC32
327 CHECK_FULL_REGS(child->thread.regs); 447 CHECK_FULL_REGS(child->thread.regs);
328#endif
329 if (index == PT_ORIG_R3)
330 break;
331 if (index < PT_FPR0) { 448 if (index < PT_FPR0) {
332 ret = put_reg(child, index, data); 449 ret = ptrace_put_reg(child, index, data);
333 } else { 450 } else {
334 flush_fp_to_thread(child); 451 flush_fp_to_thread(child);
335 ((unsigned long *)child->thread.fpr)[index - PT_FPR0] = data; 452 ((unsigned long *)child->thread.fpr)[index - PT_FPR0] = data;
@@ -384,7 +501,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
384 break; 501 break;
385 } 502 }
386 503
387#ifdef CONFIG_PPC64
388 case PTRACE_GET_DEBUGREG: { 504 case PTRACE_GET_DEBUGREG: {
389 ret = -EINVAL; 505 ret = -EINVAL;
390 /* We only support one DABR and no IABRS at the moment */ 506 /* We only support one DABR and no IABRS at the moment */
@@ -398,73 +514,61 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
398 case PTRACE_SET_DEBUGREG: 514 case PTRACE_SET_DEBUGREG:
399 ret = ptrace_set_debugreg(child, addr, data); 515 ret = ptrace_set_debugreg(child, addr, data);
400 break; 516 break;
401#endif
402 517
403 case PTRACE_DETACH: 518 case PTRACE_DETACH:
404 ret = ptrace_detach(child, data); 519 ret = ptrace_detach(child, data);
405 break; 520 break;
406 521
407 case PPC_PTRACE_GETREGS: { /* Get GPRs 0 - 31. */ 522#ifdef CONFIG_PPC64
408 int i; 523 case PTRACE_GETREGS64:
409 unsigned long *reg = &((unsigned long *)child->thread.regs)[0]; 524#endif
410 unsigned long __user *tmp = (unsigned long __user *)addr; 525 case PTRACE_GETREGS: { /* Get all pt_regs from the child. */
411 526 int ui;
412 for (i = 0; i < 32; i++) { 527 if (!access_ok(VERIFY_WRITE, (void __user *)data,
413 ret = put_user(*reg, tmp); 528 sizeof(struct pt_regs))) {
414 if (ret) 529 ret = -EIO;
415 break; 530 break;
416 reg++; 531 }
417 tmp++; 532 ret = 0;
533 for (ui = 0; ui < PT_REGS_COUNT; ui ++) {
534 ret |= __put_user(ptrace_get_reg(child, ui),
535 (unsigned long __user *) data);
536 data += sizeof(long);
418 } 537 }
419 break; 538 break;
420 } 539 }
421 540
422 case PPC_PTRACE_SETREGS: { /* Set GPRs 0 - 31. */ 541#ifdef CONFIG_PPC64
423 int i; 542 case PTRACE_SETREGS64:
424 unsigned long *reg = &((unsigned long *)child->thread.regs)[0]; 543#endif
425 unsigned long __user *tmp = (unsigned long __user *)addr; 544 case PTRACE_SETREGS: { /* Set all gp regs in the child. */
426 545 unsigned long tmp;
427 for (i = 0; i < 32; i++) { 546 int ui;
428 ret = get_user(*reg, tmp); 547 if (!access_ok(VERIFY_READ, (void __user *)data,
548 sizeof(struct pt_regs))) {
549 ret = -EIO;
550 break;
551 }
552 ret = 0;
553 for (ui = 0; ui < PT_REGS_COUNT; ui ++) {
554 ret = __get_user(tmp, (unsigned long __user *) data);
429 if (ret) 555 if (ret)
430 break; 556 break;
431 reg++; 557 ptrace_put_reg(child, ui, tmp);
432 tmp++; 558 data += sizeof(long);
433 } 559 }
434 break; 560 break;
435 } 561 }
436 562
437 case PPC_PTRACE_GETFPREGS: { /* Get FPRs 0 - 31. */ 563 case PTRACE_GETFPREGS: { /* Get the child FPU state (FPR0...31 + FPSCR) */
438 int i;
439 unsigned long *reg = &((unsigned long *)child->thread.fpr)[0];
440 unsigned long __user *tmp = (unsigned long __user *)addr;
441
442 flush_fp_to_thread(child); 564 flush_fp_to_thread(child);
443 565 ret = get_fpregs((void __user *)data, child, 1);
444 for (i = 0; i < 32; i++) {
445 ret = put_user(*reg, tmp);
446 if (ret)
447 break;
448 reg++;
449 tmp++;
450 }
451 break; 566 break;
452 } 567 }
453 568
454 case PPC_PTRACE_SETFPREGS: { /* Get FPRs 0 - 31. */ 569 case PTRACE_SETFPREGS: { /* Set the child FPU state (FPR0...31 + FPSCR) */
455 int i;
456 unsigned long *reg = &((unsigned long *)child->thread.fpr)[0];
457 unsigned long __user *tmp = (unsigned long __user *)addr;
458
459 flush_fp_to_thread(child); 570 flush_fp_to_thread(child);
460 571 ret = set_fpregs((void __user *)data, child, 1);
461 for (i = 0; i < 32; i++) {
462 ret = get_user(*reg, tmp);
463 if (ret)
464 break;
465 reg++;
466 tmp++;
467 }
468 break; 572 break;
469 } 573 }
470 574
@@ -499,11 +603,18 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
499 break; 603 break;
500#endif 604#endif
501 605
606 /* Old reverse args ptrace callss */
607 case PPC_PTRACE_GETREGS: /* Get GPRs 0 - 31. */
608 case PPC_PTRACE_SETREGS: /* Set GPRs 0 - 31. */
609 case PPC_PTRACE_GETFPREGS: /* Get FPRs 0 - 31. */
610 case PPC_PTRACE_SETFPREGS: /* Get FPRs 0 - 31. */
611 ret = arch_ptrace_old(child, request, addr, data);
612 break;
613
502 default: 614 default:
503 ret = ptrace_request(child, request, addr, data); 615 ret = ptrace_request(child, request, addr, data);
504 break; 616 break;
505 } 617 }
506
507 return ret; 618 return ret;
508} 619}
509 620
diff --git a/arch/powerpc/kernel/ptrace32.c b/arch/powerpc/kernel/ptrace32.c
index 9b9a230349bc..9e6baeac0fb1 100644
--- a/arch/powerpc/kernel/ptrace32.c
+++ b/arch/powerpc/kernel/ptrace32.c
@@ -33,13 +33,55 @@
33#include <asm/pgtable.h> 33#include <asm/pgtable.h>
34#include <asm/system.h> 34#include <asm/system.h>
35 35
36#include "ptrace-common.h"
37
38/* 36/*
39 * does not yet catch signals sent when the child dies. 37 * does not yet catch signals sent when the child dies.
40 * in exit.c or in signal.c. 38 * in exit.c or in signal.c.
41 */ 39 */
42 40
41/*
42 * Here are the old "legacy" powerpc specific getregs/setregs ptrace calls,
43 * we mark them as obsolete now, they will be removed in a future version
44 */
45static long compat_ptrace_old(struct task_struct *child, long request,
46 long addr, long data)
47{
48 int ret = -EPERM;
49
50 switch(request) {
51 case PPC_PTRACE_GETREGS: { /* Get GPRs 0 - 31. */
52 int i;
53 unsigned long *reg = &((unsigned long *)child->thread.regs)[0];
54 unsigned int __user *tmp = (unsigned int __user *)addr;
55
56 for (i = 0; i < 32; i++) {
57 ret = put_user(*reg, tmp);
58 if (ret)
59 break;
60 reg++;
61 tmp++;
62 }
63 break;
64 }
65
66 case PPC_PTRACE_SETREGS: { /* Set GPRs 0 - 31. */
67 int i;
68 unsigned long *reg = &((unsigned long *)child->thread.regs)[0];
69 unsigned int __user *tmp = (unsigned int __user *)addr;
70
71 for (i = 0; i < 32; i++) {
72 ret = get_user(*reg, tmp);
73 if (ret)
74 break;
75 reg++;
76 tmp++;
77 }
78 break;
79 }
80
81 }
82 return ret;
83}
84
43long compat_sys_ptrace(int request, int pid, unsigned long addr, 85long compat_sys_ptrace(int request, int pid, unsigned long addr,
44 unsigned long data) 86 unsigned long data)
45{ 87{
@@ -123,7 +165,7 @@ long compat_sys_ptrace(int request, int pid, unsigned long addr,
123 break; 165 break;
124 166
125 if (index < PT_FPR0) { 167 if (index < PT_FPR0) {
126 tmp = get_reg(child, index); 168 tmp = ptrace_get_reg(child, index);
127 } else { 169 } else {
128 flush_fp_to_thread(child); 170 flush_fp_to_thread(child);
129 /* 171 /*
@@ -162,7 +204,9 @@ long compat_sys_ptrace(int request, int pid, unsigned long addr,
162 else 204 else
163 part = 0; /* want the 1st half of the register (left-most). */ 205 part = 0; /* want the 1st half of the register (left-most). */
164 206
165 /* Validate the input - check to see if address is on the wrong boundary or beyond the end of the user area */ 207 /* Validate the input - check to see if address is on the wrong boundary
208 * or beyond the end of the user area
209 */
166 if ((addr & 3) || numReg > PT_FPSCR) 210 if ((addr & 3) || numReg > PT_FPSCR)
167 break; 211 break;
168 212
@@ -170,7 +214,7 @@ long compat_sys_ptrace(int request, int pid, unsigned long addr,
170 flush_fp_to_thread(child); 214 flush_fp_to_thread(child);
171 tmp = ((unsigned long int *)child->thread.fpr)[numReg - PT_FPR0]; 215 tmp = ((unsigned long int *)child->thread.fpr)[numReg - PT_FPR0];
172 } else { /* register within PT_REGS struct */ 216 } else { /* register within PT_REGS struct */
173 tmp = get_reg(child, numReg); 217 tmp = ptrace_get_reg(child, numReg);
174 } 218 }
175 reg32bits = ((u32*)&tmp)[part]; 219 reg32bits = ((u32*)&tmp)[part];
176 ret = put_user(reg32bits, (u32 __user *)data); 220 ret = put_user(reg32bits, (u32 __user *)data);
@@ -226,10 +270,8 @@ long compat_sys_ptrace(int request, int pid, unsigned long addr,
226 if ((addr & 3) || (index > PT_FPSCR32)) 270 if ((addr & 3) || (index > PT_FPSCR32))
227 break; 271 break;
228 272
229 if (index == PT_ORIG_R3)
230 break;
231 if (index < PT_FPR0) { 273 if (index < PT_FPR0) {
232 ret = put_reg(child, index, data); 274 ret = ptrace_put_reg(child, index, data);
233 } else { 275 } else {
234 flush_fp_to_thread(child); 276 flush_fp_to_thread(child);
235 /* 277 /*
@@ -258,70 +300,25 @@ long compat_sys_ptrace(int request, int pid, unsigned long addr,
258 /* Determine which register the user wants */ 300 /* Determine which register the user wants */
259 index = (u64)addr >> 2; 301 index = (u64)addr >> 2;
260 numReg = index / 2; 302 numReg = index / 2;
303
261 /* 304 /*
262 * Validate the input - check to see if address is on the 305 * Validate the input - check to see if address is on the
263 * wrong boundary or beyond the end of the user area 306 * wrong boundary or beyond the end of the user area
264 */ 307 */
265 if ((addr & 3) || (numReg > PT_FPSCR)) 308 if ((addr & 3) || (numReg > PT_FPSCR))
266 break; 309 break;
267 /* Insure it is a register we let them change */ 310 if (numReg < PT_FPR0) {
268 if ((numReg == PT_ORIG_R3) 311 unsigned long freg = ptrace_get_reg(child, numReg);
269 || ((numReg > PT_CCR) && (numReg < PT_FPR0))) 312 if (index % 2)
270 break; 313 freg = (freg & ~0xfffffffful) | (data & 0xfffffffful);
271 if (numReg >= PT_FPR0) { 314 else
315 freg = (freg & 0xfffffffful) | (data << 32);
316 ret = ptrace_put_reg(child, numReg, freg);
317 } else {
272 flush_fp_to_thread(child); 318 flush_fp_to_thread(child);
319 ((unsigned int *)child->thread.regs)[index] = data;
320 ret = 0;
273 } 321 }
274 if (numReg == PT_MSR)
275 data = (data & MSR_DEBUGCHANGE)
276 | (child->thread.regs->msr & ~MSR_DEBUGCHANGE);
277 ((u32*)child->thread.regs)[index] = data;
278 ret = 0;
279 break;
280 }
281
282 case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
283 case PTRACE_CONT: { /* restart after signal. */
284 ret = -EIO;
285 if (!valid_signal(data))
286 break;
287 if (request == PTRACE_SYSCALL)
288 set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
289 else
290 clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
291 child->exit_code = data;
292 /* make sure the single step bit is not set. */
293 clear_single_step(child);
294 wake_up_process(child);
295 ret = 0;
296 break;
297 }
298
299 /*
300 * make the child exit. Best I can do is send it a sigkill.
301 * perhaps it should be put in the status that it wants to
302 * exit.
303 */
304 case PTRACE_KILL: {
305 ret = 0;
306 if (child->exit_state == EXIT_ZOMBIE) /* already dead */
307 break;
308 child->exit_code = SIGKILL;
309 /* make sure the single step bit is not set. */
310 clear_single_step(child);
311 wake_up_process(child);
312 break;
313 }
314
315 case PTRACE_SINGLESTEP: { /* set the trap flag. */
316 ret = -EIO;
317 if (!valid_signal(data))
318 break;
319 clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
320 set_single_step(child);
321 child->exit_code = data;
322 /* give it a chance to run. */
323 wake_up_process(child);
324 ret = 0;
325 break; 322 break;
326 } 323 }
327 324
@@ -334,95 +331,67 @@ long compat_sys_ptrace(int request, int pid, unsigned long addr,
334 break; 331 break;
335 } 332 }
336 333
337 case PTRACE_SET_DEBUGREG: 334 case PTRACE_GETEVENTMSG:
338 ret = ptrace_set_debugreg(child, addr, data); 335 ret = put_user(child->ptrace_message, (unsigned int __user *) data);
339 break;
340
341 case PTRACE_DETACH:
342 ret = ptrace_detach(child, data);
343 break; 336 break;
344 337
345 case PPC_PTRACE_GETREGS: { /* Get GPRs 0 - 31. */ 338 case PTRACE_GETREGS: { /* Get all pt_regs from the child. */
346 int i; 339 int ui;
347 unsigned long *reg = &((unsigned long *)child->thread.regs)[0]; 340 if (!access_ok(VERIFY_WRITE, (void __user *)data,
348 unsigned int __user *tmp = (unsigned int __user *)addr; 341 PT_REGS_COUNT * sizeof(int))) {
349 342 ret = -EIO;
350 for (i = 0; i < 32; i++) { 343 break;
351 ret = put_user(*reg, tmp);
352 if (ret)
353 break;
354 reg++;
355 tmp++;
356 } 344 }
357 break; 345 ret = 0;
358 } 346 for (ui = 0; ui < PT_REGS_COUNT; ui ++) {
359 347 ret |= __put_user(ptrace_get_reg(child, ui),
360 case PPC_PTRACE_SETREGS: { /* Set GPRs 0 - 31. */ 348 (unsigned int __user *) data);
361 int i; 349 data += sizeof(int);
362 unsigned long *reg = &((unsigned long *)child->thread.regs)[0];
363 unsigned int __user *tmp = (unsigned int __user *)addr;
364
365 for (i = 0; i < 32; i++) {
366 ret = get_user(*reg, tmp);
367 if (ret)
368 break;
369 reg++;
370 tmp++;
371 } 350 }
372 break; 351 break;
373 } 352 }
374 353
375 case PPC_PTRACE_GETFPREGS: { /* Get FPRs 0 - 31. */ 354 case PTRACE_SETREGS: { /* Set all gp regs in the child. */
376 int i; 355 unsigned long tmp;
377 unsigned long *reg = &((unsigned long *)child->thread.fpr)[0]; 356 int ui;
378 unsigned int __user *tmp = (unsigned int __user *)addr; 357 if (!access_ok(VERIFY_READ, (void __user *)data,
379 358 PT_REGS_COUNT * sizeof(int))) {
380 flush_fp_to_thread(child); 359 ret = -EIO;
381 360 break;
382 for (i = 0; i < 32; i++) {
383 ret = put_user(*reg, tmp);
384 if (ret)
385 break;
386 reg++;
387 tmp++;
388 } 361 }
389 break; 362 ret = 0;
390 } 363 for (ui = 0; ui < PT_REGS_COUNT; ui ++) {
391 364 ret = __get_user(tmp, (unsigned int __user *) data);
392 case PPC_PTRACE_SETFPREGS: { /* Get FPRs 0 - 31. */
393 int i;
394 unsigned long *reg = &((unsigned long *)child->thread.fpr)[0];
395 unsigned int __user *tmp = (unsigned int __user *)addr;
396
397 flush_fp_to_thread(child);
398
399 for (i = 0; i < 32; i++) {
400 ret = get_user(*reg, tmp);
401 if (ret) 365 if (ret)
402 break; 366 break;
403 reg++; 367 ptrace_put_reg(child, ui, tmp);
404 tmp++; 368 data += sizeof(int);
405 } 369 }
406 break; 370 break;
407 } 371 }
408 372
409 case PTRACE_GETEVENTMSG: 373 case PTRACE_GETFPREGS:
410 ret = put_user(child->ptrace_message, (unsigned int __user *) data); 374 case PTRACE_SETFPREGS:
411 break;
412
413#ifdef CONFIG_ALTIVEC
414 case PTRACE_GETVRREGS: 375 case PTRACE_GETVRREGS:
415 /* Get the child altivec register state. */ 376 case PTRACE_SETVRREGS:
416 flush_altivec_to_thread(child); 377 case PTRACE_GETREGS64:
417 ret = get_vrregs((unsigned long __user *)data, child); 378 case PTRACE_SETREGS64:
379 case PPC_PTRACE_GETFPREGS:
380 case PPC_PTRACE_SETFPREGS:
381 case PTRACE_KILL:
382 case PTRACE_SINGLESTEP:
383 case PTRACE_DETACH:
384 case PTRACE_SET_DEBUGREG:
385 case PTRACE_SYSCALL:
386 case PTRACE_CONT:
387 ret = arch_ptrace(child, request, addr, data);
418 break; 388 break;
419 389
420 case PTRACE_SETVRREGS: 390 /* Old reverse args ptrace callss */
421 /* Set the child altivec register state. */ 391 case PPC_PTRACE_GETREGS: /* Get GPRs 0 - 31. */
422 flush_altivec_to_thread(child); 392 case PPC_PTRACE_SETREGS: /* Set GPRs 0 - 31. */
423 ret = set_vrregs(child, (unsigned long __user *)data); 393 ret = compat_ptrace_old(child, request, addr, data);
424 break; 394 break;
425#endif
426 395
427 default: 396 default:
428 ret = ptrace_request(child, request, addr, data); 397 ret = ptrace_request(child, request, addr, data);
diff --git a/arch/powerpc/kernel/rtas_pci.c b/arch/powerpc/kernel/rtas_pci.c
index f2286822be09..a5de6211b97a 100644
--- a/arch/powerpc/kernel/rtas_pci.c
+++ b/arch/powerpc/kernel/rtas_pci.c
@@ -278,10 +278,8 @@ void __init find_and_init_phbs(void)
278{ 278{
279 struct device_node *node; 279 struct device_node *node;
280 struct pci_controller *phb; 280 struct pci_controller *phb;
281 unsigned int index;
282 struct device_node *root = of_find_node_by_path("/"); 281 struct device_node *root = of_find_node_by_path("/");
283 282
284 index = 0;
285 for (node = of_get_next_child(root, NULL); 283 for (node = of_get_next_child(root, NULL);
286 node != NULL; 284 node != NULL;
287 node = of_get_next_child(root, node)) { 285 node = of_get_next_child(root, node)) {
@@ -295,8 +293,7 @@ void __init find_and_init_phbs(void)
295 continue; 293 continue;
296 rtas_setup_phb(phb); 294 rtas_setup_phb(phb);
297 pci_process_bridge_OF_ranges(phb, node, 0); 295 pci_process_bridge_OF_ranges(phb, node, 0);
298 pci_setup_phb_io(phb, index == 0); 296 isa_bridge_find_early(phb);
299 index++;
300 } 297 }
301 298
302 of_node_put(root); 299 of_node_put(root);
@@ -335,7 +332,7 @@ int pcibios_remove_root_bus(struct pci_controller *phb)
335 return 1; 332 return 1;
336 } 333 }
337 334
338 rc = unmap_bus_range(b); 335 rc = pcibios_unmap_io_space(b);
339 if (rc) { 336 if (rc) {
340 printk(KERN_ERR "%s: failed to unmap IO on bus %s\n", 337 printk(KERN_ERR "%s: failed to unmap IO on bus %s\n",
341 __FUNCTION__, b->name); 338 __FUNCTION__, b->name);
diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index ed07a198f8d6..4924c48cb1ff 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -32,6 +32,7 @@
32#include <linux/unistd.h> 32#include <linux/unistd.h>
33#include <linux/serial.h> 33#include <linux/serial.h>
34#include <linux/serial_8250.h> 34#include <linux/serial_8250.h>
35#include <linux/debugfs.h>
35#include <asm/io.h> 36#include <asm/io.h>
36#include <asm/prom.h> 37#include <asm/prom.h>
37#include <asm/processor.h> 38#include <asm/processor.h>
@@ -486,6 +487,14 @@ int check_legacy_ioport(unsigned long base_port)
486 487
487 switch(base_port) { 488 switch(base_port) {
488 case I8042_DATA_REG: 489 case I8042_DATA_REG:
490 if (!(np = of_find_compatible_node(NULL, NULL, "pnpPNP,303")))
491 np = of_find_compatible_node(NULL, NULL, "pnpPNP,f03");
492 if (np) {
493 parent = of_get_parent(np);
494 of_node_put(np);
495 np = parent;
496 break;
497 }
489 np = of_find_node_by_type(NULL, "8042"); 498 np = of_find_node_by_type(NULL, "8042");
490 break; 499 break;
491 case FDC_BASE: /* FDC1 */ 500 case FDC_BASE: /* FDC1 */
@@ -571,3 +580,15 @@ static int __init check_cache_coherency(void)
571 580
572late_initcall(check_cache_coherency); 581late_initcall(check_cache_coherency);
573#endif /* CONFIG_CHECK_CACHE_COHERENCY */ 582#endif /* CONFIG_CHECK_CACHE_COHERENCY */
583
584#ifdef CONFIG_DEBUG_FS
585struct dentry *powerpc_debugfs_root;
586
587static int powerpc_debugfs_init(void)
588{
589 powerpc_debugfs_root = debugfs_create_dir("powerpc", NULL);
590
591 return powerpc_debugfs_root == NULL;
592}
593arch_initcall(powerpc_debugfs_init);
594#endif
diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index 35f8f443c14f..7ec6ba56d83d 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -262,13 +262,11 @@ void __init setup_arch(char **cmdline_p)
262 * Systems with OF can look in the properties on the cpu node(s) 262 * Systems with OF can look in the properties on the cpu node(s)
263 * for a possibly more accurate value. 263 * for a possibly more accurate value.
264 */ 264 */
265 if (cpu_has_feature(CPU_FTR_SPLIT_ID_CACHE)) { 265 dcache_bsize = cur_cpu_spec->dcache_bsize;
266 dcache_bsize = cur_cpu_spec->dcache_bsize; 266 icache_bsize = cur_cpu_spec->icache_bsize;
267 icache_bsize = cur_cpu_spec->icache_bsize; 267 ucache_bsize = 0;
268 ucache_bsize = 0; 268 if (cpu_has_feature(CPU_FTR_UNIFIED_ID_CACHE))
269 } else 269 ucache_bsize = icache_bsize = dcache_bsize;
270 ucache_bsize = dcache_bsize = icache_bsize
271 = cur_cpu_spec->dcache_bsize;
272 270
273 /* reboot on panic */ 271 /* reboot on panic */
274 panic_timeout = 180; 272 panic_timeout = 180;
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 6018178708a5..bc43bba05cf8 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -350,13 +350,11 @@ void __init setup_system(void)
350{ 350{
351 DBG(" -> setup_system()\n"); 351 DBG(" -> setup_system()\n");
352 352
353 /* Apply the CPUs-specific and firmware specific fixups to kernel 353 /* Apply CPUs-specific fixups to kernel text (nop out sections
354 * text (nop out sections not relevant to this CPU or this firmware) 354 * not relevant to this CPU)
355 */ 355 */
356 do_feature_fixups(cur_cpu_spec->cpu_features, 356 do_feature_fixups(cur_cpu_spec->cpu_features,
357 &__start___ftr_fixup, &__stop___ftr_fixup); 357 &__start___ftr_fixup, &__stop___ftr_fixup);
358 do_feature_fixups(powerpc_firmware_features,
359 &__start___fw_ftr_fixup, &__stop___fw_ftr_fixup);
360 358
361 /* 359 /*
362 * Unflatten the device-tree passed by prom_init or kexec 360 * Unflatten the device-tree passed by prom_init or kexec
@@ -394,6 +392,12 @@ void __init setup_system(void)
394 if (ppc_md.init_early) 392 if (ppc_md.init_early)
395 ppc_md.init_early(); 393 ppc_md.init_early();
396 394
395 /* Apply firmware specific fixups to kernel text (nop out
396 * sections not relevant to this firmware)
397 */
398 do_feature_fixups(powerpc_firmware_features,
399 &__start___fw_ftr_fixup, &__stop___fw_ftr_fixup);
400
397 /* 401 /*
398 * We can discover serial ports now since the above did setup the 402 * We can discover serial ports now since the above did setup the
399 * hash table management for us, thus ioremap works. We do that early 403 * hash table management for us, thus ioremap works. We do that early
diff --git a/arch/powerpc/kernel/signal.c b/arch/powerpc/kernel/signal.c
new file mode 100644
index 000000000000..c434d6c4e4e6
--- /dev/null
+++ b/arch/powerpc/kernel/signal.c
@@ -0,0 +1,180 @@
1/*
2 * Common signal handling code for both 32 and 64 bits
3 *
4 * Copyright (c) 2007 Benjamin Herrenschmidt, IBM Coproration
5 * Extracted from signal_32.c and signal_64.c
6 *
7 * This file is subject to the terms and conditions of the GNU General
8 * Public License. See the file README.legal in the main directory of
9 * this archive for more details.
10 */
11
12#include <linux/ptrace.h>
13#include <linux/signal.h>
14#include <asm/uaccess.h>
15#include <asm/unistd.h>
16
17#include "signal.h"
18
19/*
20 * Allocate space for the signal frame
21 */
22void __user * get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
23 size_t frame_size)
24{
25 unsigned long oldsp, newsp;
26
27 /* Default to using normal stack */
28 oldsp = regs->gpr[1];
29
30 /* Check for alt stack */
31 if ((ka->sa.sa_flags & SA_ONSTACK) &&
32 current->sas_ss_size && !on_sig_stack(oldsp))
33 oldsp = (current->sas_ss_sp + current->sas_ss_size);
34
35 /* Get aligned frame */
36 newsp = (oldsp - frame_size) & ~0xFUL;
37
38 /* Check access */
39 if (!access_ok(VERIFY_WRITE, (void __user *)newsp, oldsp - newsp))
40 return NULL;
41
42 return (void __user *)newsp;
43}
44
45
46/*
47 * Restore the user process's signal mask
48 */
49void restore_sigmask(sigset_t *set)
50{
51 sigdelsetmask(set, ~_BLOCKABLE);
52 spin_lock_irq(&current->sighand->siglock);
53 current->blocked = *set;
54 recalc_sigpending();
55 spin_unlock_irq(&current->sighand->siglock);
56}
57
58static void check_syscall_restart(struct pt_regs *regs, struct k_sigaction *ka,
59 int has_handler)
60{
61 unsigned long ret = regs->gpr[3];
62 int restart = 1;
63
64 /* syscall ? */
65 if (TRAP(regs) != 0x0C00)
66 return;
67
68 /* error signalled ? */
69 if (!(regs->ccr & 0x10000000))
70 return;
71
72 switch (ret) {
73 case ERESTART_RESTARTBLOCK:
74 case ERESTARTNOHAND:
75 /* ERESTARTNOHAND means that the syscall should only be
76 * restarted if there was no handler for the signal, and since
77 * we only get here if there is a handler, we dont restart.
78 */
79 restart = !has_handler;
80 break;
81 case ERESTARTSYS:
82 /* ERESTARTSYS means to restart the syscall if there is no
83 * handler or the handler was registered with SA_RESTART
84 */
85 restart = !has_handler || (ka->sa.sa_flags & SA_RESTART) != 0;
86 break;
87 case ERESTARTNOINTR:
88 /* ERESTARTNOINTR means that the syscall should be
89 * called again after the signal handler returns.
90 */
91 break;
92 default:
93 return;
94 }
95 if (restart) {
96 if (ret == ERESTART_RESTARTBLOCK)
97 regs->gpr[0] = __NR_restart_syscall;
98 else
99 regs->gpr[3] = regs->orig_gpr3;
100 regs->nip -= 4;
101 regs->result = 0;
102 } else {
103 regs->result = -EINTR;
104 regs->gpr[3] = EINTR;
105 regs->ccr |= 0x10000000;
106 }
107}
108
109int do_signal(sigset_t *oldset, struct pt_regs *regs)
110{
111 siginfo_t info;
112 int signr;
113 struct k_sigaction ka;
114 int ret;
115 int is32 = is_32bit_task();
116
117 if (test_thread_flag(TIF_RESTORE_SIGMASK))
118 oldset = &current->saved_sigmask;
119 else if (!oldset)
120 oldset = &current->blocked;
121
122 signr = get_signal_to_deliver(&info, &ka, regs, NULL);
123
124 /* Is there any syscall restart business here ? */
125 check_syscall_restart(regs, &ka, signr > 0);
126
127 if (signr <= 0) {
128 /* No signal to deliver -- put the saved sigmask back */
129 if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
130 clear_thread_flag(TIF_RESTORE_SIGMASK);
131 sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
132 }
133 return 0; /* no signals delivered */
134 }
135
136 /*
137 * Reenable the DABR before delivering the signal to
138 * user space. The DABR will have been cleared if it
139 * triggered inside the kernel.
140 */
141 if (current->thread.dabr)
142 set_dabr(current->thread.dabr);
143
144 if (is32) {
145 if (ka.sa.sa_flags & SA_SIGINFO)
146 ret = handle_rt_signal32(signr, &ka, &info, oldset,
147 regs);
148 else
149 ret = handle_signal32(signr, &ka, &info, oldset,
150 regs);
151 } else {
152 ret = handle_rt_signal64(signr, &ka, &info, oldset, regs);
153 }
154
155 if (ret) {
156 spin_lock_irq(&current->sighand->siglock);
157 sigorsets(&current->blocked, &current->blocked,
158 &ka.sa.sa_mask);
159 if (!(ka.sa.sa_flags & SA_NODEFER))
160 sigaddset(&current->blocked, signr);
161 recalc_sigpending();
162 spin_unlock_irq(&current->sighand->siglock);
163
164 /*
165 * A signal was successfully delivered; the saved sigmask is in
166 * its frame, and we can clear the TIF_RESTORE_SIGMASK flag.
167 */
168 if (test_thread_flag(TIF_RESTORE_SIGMASK))
169 clear_thread_flag(TIF_RESTORE_SIGMASK);
170 }
171
172 return ret;
173}
174
175long sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
176 unsigned long r5, unsigned long r6, unsigned long r7,
177 unsigned long r8, struct pt_regs *regs)
178{
179 return do_sigaltstack(uss, uoss, regs->gpr[1]);
180}
diff --git a/arch/powerpc/kernel/signal.h b/arch/powerpc/kernel/signal.h
new file mode 100644
index 000000000000..77efb3d5465a
--- /dev/null
+++ b/arch/powerpc/kernel/signal.h
@@ -0,0 +1,55 @@
1/*
2 * Copyright (c) 2007 Benjamin Herrenschmidt, IBM Coproration
3 * Extracted from signal_32.c and signal_64.c
4 *
5 * This file is subject to the terms and conditions of the GNU General
6 * Public License. See the file README.legal in the main directory of
7 * this archive for more details.
8 */
9
10#ifndef _POWERPC_ARCH_SIGNAL_H
11#define _POWERPC_ARCH_SIGNAL_H
12
13#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
14
15extern void __user * get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
16 size_t frame_size);
17extern void restore_sigmask(sigset_t *set);
18
19extern int handle_signal32(unsigned long sig, struct k_sigaction *ka,
20 siginfo_t *info, sigset_t *oldset,
21 struct pt_regs *regs);
22
23extern int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka,
24 siginfo_t *info, sigset_t *oldset,
25 struct pt_regs *regs);
26
27
28#ifdef CONFIG_PPC64
29
30static inline int is_32bit_task(void)
31{
32 return test_thread_flag(TIF_32BIT);
33}
34
35extern int handle_rt_signal64(int signr, struct k_sigaction *ka,
36 siginfo_t *info, sigset_t *set,
37 struct pt_regs *regs);
38
39#else /* CONFIG_PPC64 */
40
41static inline int is_32bit_task(void)
42{
43 return 1;
44}
45
46static inline int handle_rt_signal64(int signr, struct k_sigaction *ka,
47 siginfo_t *info, sigset_t *set,
48 struct pt_regs *regs)
49{
50 return -EFAULT;
51}
52
53#endif /* !defined(CONFIG_PPC64) */
54
55#endif /* _POWERPC_ARCH_SIGNAL_H */
diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c
index dd1dca5bfa81..590057e9e987 100644
--- a/arch/powerpc/kernel/signal_32.c
+++ b/arch/powerpc/kernel/signal_32.c
@@ -51,12 +51,11 @@
51#include <asm/pgtable.h> 51#include <asm/pgtable.h>
52#endif 52#endif
53 53
54#undef DEBUG_SIG 54#include "signal.h"
55 55
56#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) 56#undef DEBUG_SIG
57 57
58#ifdef CONFIG_PPC64 58#ifdef CONFIG_PPC64
59#define do_signal do_signal32
60#define sys_sigsuspend compat_sys_sigsuspend 59#define sys_sigsuspend compat_sys_sigsuspend
61#define sys_rt_sigsuspend compat_sys_rt_sigsuspend 60#define sys_rt_sigsuspend compat_sys_rt_sigsuspend
62#define sys_rt_sigreturn compat_sys_rt_sigreturn 61#define sys_rt_sigreturn compat_sys_rt_sigreturn
@@ -231,8 +230,6 @@ static inline int restore_general_regs(struct pt_regs *regs,
231 230
232#endif /* CONFIG_PPC64 */ 231#endif /* CONFIG_PPC64 */
233 232
234int do_signal(sigset_t *oldset, struct pt_regs *regs);
235
236/* 233/*
237 * Atomically swap in the new signal mask, and wait for a signal. 234 * Atomically swap in the new signal mask, and wait for a signal.
238 */ 235 */
@@ -251,14 +248,6 @@ long sys_sigsuspend(old_sigset_t mask)
251 return -ERESTARTNOHAND; 248 return -ERESTARTNOHAND;
252} 249}
253 250
254#ifdef CONFIG_PPC32
255long sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss, int r5,
256 int r6, int r7, int r8, struct pt_regs *regs)
257{
258 return do_sigaltstack(uss, uoss, regs->gpr[1]);
259}
260#endif
261
262long sys_sigaction(int sig, struct old_sigaction __user *act, 251long sys_sigaction(int sig, struct old_sigaction __user *act,
263 struct old_sigaction __user *oact) 252 struct old_sigaction __user *oact)
264{ 253{
@@ -293,14 +282,17 @@ long sys_sigaction(int sig, struct old_sigaction __user *act,
293/* 282/*
294 * When we have signals to deliver, we set up on the 283 * When we have signals to deliver, we set up on the
295 * user stack, going down from the original stack pointer: 284 * user stack, going down from the original stack pointer:
296 * a sigregs struct 285 * an ABI gap of 56 words
286 * an mcontext struct
297 * a sigcontext struct 287 * a sigcontext struct
298 * a gap of __SIGNAL_FRAMESIZE bytes 288 * a gap of __SIGNAL_FRAMESIZE bytes
299 * 289 *
300 * Each of these things must be a multiple of 16 bytes in size. 290 * Each of these things must be a multiple of 16 bytes in size. The following
291 * structure represent all of this except the __SIGNAL_FRAMESIZE gap
301 * 292 *
302 */ 293 */
303struct sigregs { 294struct sigframe {
295 struct sigcontext sctx; /* the sigcontext */
304 struct mcontext mctx; /* all the register values */ 296 struct mcontext mctx; /* all the register values */
305 /* 297 /*
306 * Programs using the rs6000/xcoff abi can save up to 19 gp 298 * Programs using the rs6000/xcoff abi can save up to 19 gp
@@ -703,44 +695,22 @@ int compat_sys_sigaltstack(u32 __new, u32 __old, int r5,
703} 695}
704#endif /* CONFIG_PPC64 */ 696#endif /* CONFIG_PPC64 */
705 697
706
707/*
708 * Restore the user process's signal mask
709 */
710#ifdef CONFIG_PPC64
711extern void restore_sigmask(sigset_t *set);
712#else /* CONFIG_PPC64 */
713static void restore_sigmask(sigset_t *set)
714{
715 sigdelsetmask(set, ~_BLOCKABLE);
716 spin_lock_irq(&current->sighand->siglock);
717 current->blocked = *set;
718 recalc_sigpending();
719 spin_unlock_irq(&current->sighand->siglock);
720}
721#endif
722
723/* 698/*
724 * Set up a signal frame for a "real-time" signal handler 699 * Set up a signal frame for a "real-time" signal handler
725 * (one which gets siginfo). 700 * (one which gets siginfo).
726 */ 701 */
727static int handle_rt_signal(unsigned long sig, struct k_sigaction *ka, 702int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka,
728 siginfo_t *info, sigset_t *oldset, 703 siginfo_t *info, sigset_t *oldset,
729 struct pt_regs *regs, unsigned long newsp) 704 struct pt_regs *regs)
730{ 705{
731 struct rt_sigframe __user *rt_sf; 706 struct rt_sigframe __user *rt_sf;
732 struct mcontext __user *frame; 707 struct mcontext __user *frame;
733 unsigned long origsp = newsp; 708 unsigned long newsp = 0;
734 709
735 /* Set up Signal Frame */ 710 /* Set up Signal Frame */
736 /* Put a Real Time Context onto stack */ 711 /* Put a Real Time Context onto stack */
737 newsp -= sizeof(*rt_sf); 712 rt_sf = get_sigframe(ka, regs, sizeof(*rt_sf));
738 rt_sf = (struct rt_sigframe __user *)newsp; 713 if (unlikely(rt_sf == NULL))
739
740 /* create a stack frame for the caller of the handler */
741 newsp -= __SIGNAL_FRAMESIZE + 16;
742
743 if (!access_ok(VERIFY_WRITE, (void __user *)newsp, origsp - newsp))
744 goto badframe; 714 goto badframe;
745 715
746 /* Put the siginfo & fill in most of the ucontext */ 716 /* Put the siginfo & fill in most of the ucontext */
@@ -770,8 +740,12 @@ static int handle_rt_signal(unsigned long sig, struct k_sigaction *ka,
770 740
771 current->thread.fpscr.val = 0; /* turn off all fp exceptions */ 741 current->thread.fpscr.val = 0; /* turn off all fp exceptions */
772 742
743 /* create a stack frame for the caller of the handler */
744 newsp = ((unsigned long)rt_sf) - (__SIGNAL_FRAMESIZE + 16);
773 if (put_user(regs->gpr[1], (u32 __user *)newsp)) 745 if (put_user(regs->gpr[1], (u32 __user *)newsp))
774 goto badframe; 746 goto badframe;
747
748 /* Fill registers for signal handler */
775 regs->gpr[1] = newsp; 749 regs->gpr[1] = newsp;
776 regs->gpr[3] = sig; 750 regs->gpr[3] = sig;
777 regs->gpr[4] = (unsigned long) &rt_sf->info; 751 regs->gpr[4] = (unsigned long) &rt_sf->info;
@@ -1015,27 +989,18 @@ int sys_debug_setcontext(struct ucontext __user *ctx,
1015/* 989/*
1016 * OK, we're invoking a handler 990 * OK, we're invoking a handler
1017 */ 991 */
1018static int handle_signal(unsigned long sig, struct k_sigaction *ka, 992int handle_signal32(unsigned long sig, struct k_sigaction *ka,
1019 siginfo_t *info, sigset_t *oldset, struct pt_regs *regs, 993 siginfo_t *info, sigset_t *oldset, struct pt_regs *regs)
1020 unsigned long newsp)
1021{ 994{
1022 struct sigcontext __user *sc; 995 struct sigcontext __user *sc;
1023 struct sigregs __user *frame; 996 struct sigframe __user *frame;
1024 unsigned long origsp = newsp; 997 unsigned long newsp = 0;
1025 998
1026 /* Set up Signal Frame */ 999 /* Set up Signal Frame */
1027 newsp -= sizeof(struct sigregs); 1000 frame = get_sigframe(ka, regs, sizeof(*frame));
1028 frame = (struct sigregs __user *) newsp; 1001 if (unlikely(frame == NULL))
1029
1030 /* Put a sigcontext on the stack */
1031 newsp -= sizeof(*sc);
1032 sc = (struct sigcontext __user *) newsp;
1033
1034 /* create a stack frame for the caller of the handler */
1035 newsp -= __SIGNAL_FRAMESIZE;
1036
1037 if (!access_ok(VERIFY_WRITE, (void __user *) newsp, origsp - newsp))
1038 goto badframe; 1002 goto badframe;
1003 sc = (struct sigcontext __user *) &frame->sctx;
1039 1004
1040#if _NSIG != 64 1005#if _NSIG != 64
1041#error "Please adjust handle_signal()" 1006#error "Please adjust handle_signal()"
@@ -1047,7 +1012,7 @@ static int handle_signal(unsigned long sig, struct k_sigaction *ka,
1047#else 1012#else
1048 || __put_user(oldset->sig[1], &sc->_unused[3]) 1013 || __put_user(oldset->sig[1], &sc->_unused[3])
1049#endif 1014#endif
1050 || __put_user(to_user_ptr(frame), &sc->regs) 1015 || __put_user(to_user_ptr(&frame->mctx), &sc->regs)
1051 || __put_user(sig, &sc->signal)) 1016 || __put_user(sig, &sc->signal))
1052 goto badframe; 1017 goto badframe;
1053 1018
@@ -1063,8 +1028,11 @@ static int handle_signal(unsigned long sig, struct k_sigaction *ka,
1063 1028
1064 current->thread.fpscr.val = 0; /* turn off all fp exceptions */ 1029 current->thread.fpscr.val = 0; /* turn off all fp exceptions */
1065 1030
1031 /* create a stack frame for the caller of the handler */
1032 newsp = ((unsigned long)frame) - __SIGNAL_FRAMESIZE;
1066 if (put_user(regs->gpr[1], (u32 __user *)newsp)) 1033 if (put_user(regs->gpr[1], (u32 __user *)newsp))
1067 goto badframe; 1034 goto badframe;
1035
1068 regs->gpr[1] = newsp; 1036 regs->gpr[1] = newsp;
1069 regs->gpr[3] = sig; 1037 regs->gpr[3] = sig;
1070 regs->gpr[4] = (unsigned long) sc; 1038 regs->gpr[4] = (unsigned long) sc;
@@ -1126,106 +1094,3 @@ badframe:
1126 force_sig(SIGSEGV, current); 1094 force_sig(SIGSEGV, current);
1127 return 0; 1095 return 0;
1128} 1096}
1129
1130/*
1131 * Note that 'init' is a special process: it doesn't get signals it doesn't
1132 * want to handle. Thus you cannot kill init even with a SIGKILL even by
1133 * mistake.
1134 */
1135int do_signal(sigset_t *oldset, struct pt_regs *regs)
1136{
1137 siginfo_t info;
1138 struct k_sigaction ka;
1139 unsigned int newsp;
1140 int signr, ret;
1141
1142#ifdef CONFIG_PPC32
1143 if (try_to_freeze()) {
1144 signr = 0;
1145 if (!signal_pending(current))
1146 goto no_signal;
1147 }
1148#endif
1149
1150 if (test_thread_flag(TIF_RESTORE_SIGMASK))
1151 oldset = &current->saved_sigmask;
1152 else if (!oldset)
1153 oldset = &current->blocked;
1154
1155 signr = get_signal_to_deliver(&info, &ka, regs, NULL);
1156#ifdef CONFIG_PPC32
1157no_signal:
1158#endif
1159 if (TRAP(regs) == 0x0C00 /* System Call! */
1160 && regs->ccr & 0x10000000 /* error signalled */
1161 && ((ret = regs->gpr[3]) == ERESTARTSYS
1162 || ret == ERESTARTNOHAND || ret == ERESTARTNOINTR
1163 || ret == ERESTART_RESTARTBLOCK)) {
1164
1165 if (signr > 0
1166 && (ret == ERESTARTNOHAND || ret == ERESTART_RESTARTBLOCK
1167 || (ret == ERESTARTSYS
1168 && !(ka.sa.sa_flags & SA_RESTART)))) {
1169 /* make the system call return an EINTR error */
1170 regs->result = -EINTR;
1171 regs->gpr[3] = EINTR;
1172 /* note that the cr0.SO bit is already set */
1173 } else {
1174 regs->nip -= 4; /* Back up & retry system call */
1175 regs->result = 0;
1176 regs->trap = 0;
1177 if (ret == ERESTART_RESTARTBLOCK)
1178 regs->gpr[0] = __NR_restart_syscall;
1179 else
1180 regs->gpr[3] = regs->orig_gpr3;
1181 }
1182 }
1183
1184 if (signr == 0) {
1185 /* No signal to deliver -- put the saved sigmask back */
1186 if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
1187 clear_thread_flag(TIF_RESTORE_SIGMASK);
1188 sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
1189 }
1190 return 0; /* no signals delivered */
1191 }
1192
1193 if ((ka.sa.sa_flags & SA_ONSTACK) && current->sas_ss_size
1194 && !on_sig_stack(regs->gpr[1]))
1195 newsp = current->sas_ss_sp + current->sas_ss_size;
1196 else
1197 newsp = regs->gpr[1];
1198 newsp &= ~0xfUL;
1199
1200#ifdef CONFIG_PPC64
1201 /*
1202 * Reenable the DABR before delivering the signal to
1203 * user space. The DABR will have been cleared if it
1204 * triggered inside the kernel.
1205 */
1206 if (current->thread.dabr)
1207 set_dabr(current->thread.dabr);
1208#endif
1209
1210 /* Whee! Actually deliver the signal. */
1211 if (ka.sa.sa_flags & SA_SIGINFO)
1212 ret = handle_rt_signal(signr, &ka, &info, oldset, regs, newsp);
1213 else
1214 ret = handle_signal(signr, &ka, &info, oldset, regs, newsp);
1215
1216 if (ret) {
1217 spin_lock_irq(&current->sighand->siglock);
1218 sigorsets(&current->blocked, &current->blocked,
1219 &ka.sa.sa_mask);
1220 if (!(ka.sa.sa_flags & SA_NODEFER))
1221 sigaddset(&current->blocked, signr);
1222 recalc_sigpending();
1223 spin_unlock_irq(&current->sighand->siglock);
1224 /* A signal was successfully delivered; the saved sigmask is in
1225 its frame, and we can clear the TIF_RESTORE_SIGMASK flag */
1226 if (test_thread_flag(TIF_RESTORE_SIGMASK))
1227 clear_thread_flag(TIF_RESTORE_SIGMASK);
1228 }
1229
1230 return ret;
1231}
diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c
index b27e26852fdb..de895e6d8c62 100644
--- a/arch/powerpc/kernel/signal_64.c
+++ b/arch/powerpc/kernel/signal_64.c
@@ -34,9 +34,9 @@
34#include <asm/syscalls.h> 34#include <asm/syscalls.h>
35#include <asm/vdso.h> 35#include <asm/vdso.h>
36 36
37#define DEBUG_SIG 0 37#include "signal.h"
38 38
39#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) 39#define DEBUG_SIG 0
40 40
41#define GP_REGS_SIZE min(sizeof(elf_gregset_t), sizeof(struct pt_regs)) 41#define GP_REGS_SIZE min(sizeof(elf_gregset_t), sizeof(struct pt_regs))
42#define FP_REGS_SIZE sizeof(elf_fpregset_t) 42#define FP_REGS_SIZE sizeof(elf_fpregset_t)
@@ -64,14 +64,6 @@ struct rt_sigframe {
64 char abigap[288]; 64 char abigap[288];
65} __attribute__ ((aligned (16))); 65} __attribute__ ((aligned (16)));
66 66
67long sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss, unsigned long r5,
68 unsigned long r6, unsigned long r7, unsigned long r8,
69 struct pt_regs *regs)
70{
71 return do_sigaltstack(uss, uoss, regs->gpr[1]);
72}
73
74
75/* 67/*
76 * Set up the sigcontext for the signal frame. 68 * Set up the sigcontext for the signal frame.
77 */ 69 */
@@ -208,25 +200,6 @@ static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig,
208} 200}
209 201
210/* 202/*
211 * Allocate space for the signal frame
212 */
213static inline void __user * get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
214 size_t frame_size)
215{
216 unsigned long newsp;
217
218 /* Default to using normal stack */
219 newsp = regs->gpr[1];
220
221 if ((ka->sa.sa_flags & SA_ONSTACK) && current->sas_ss_size) {
222 if (! on_sig_stack(regs->gpr[1]))
223 newsp = (current->sas_ss_sp + current->sas_ss_size);
224 }
225
226 return (void __user *)((newsp - frame_size) & -16ul);
227}
228
229/*
230 * Setup the trampoline code on the stack 203 * Setup the trampoline code on the stack
231 */ 204 */
232static long setup_trampoline(unsigned int syscall, unsigned int __user *tramp) 205static long setup_trampoline(unsigned int syscall, unsigned int __user *tramp)
@@ -253,19 +226,6 @@ static long setup_trampoline(unsigned int syscall, unsigned int __user *tramp)
253} 226}
254 227
255/* 228/*
256 * Restore the user process's signal mask (also used by signal32.c)
257 */
258void restore_sigmask(sigset_t *set)
259{
260 sigdelsetmask(set, ~_BLOCKABLE);
261 spin_lock_irq(&current->sighand->siglock);
262 current->blocked = *set;
263 recalc_sigpending();
264 spin_unlock_irq(&current->sighand->siglock);
265}
266
267
268/*
269 * Handle {get,set,swap}_context operations 229 * Handle {get,set,swap}_context operations
270 */ 230 */
271int sys_swapcontext(struct ucontext __user *old_ctx, 231int sys_swapcontext(struct ucontext __user *old_ctx,
@@ -359,7 +319,7 @@ badframe:
359 return 0; 319 return 0;
360} 320}
361 321
362static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info, 322int handle_rt_signal64(int signr, struct k_sigaction *ka, siginfo_t *info,
363 sigset_t *set, struct pt_regs *regs) 323 sigset_t *set, struct pt_regs *regs)
364{ 324{
365 /* Handler is *really* a pointer to the function descriptor for 325 /* Handler is *really* a pointer to the function descriptor for
@@ -373,8 +333,7 @@ static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info,
373 long err = 0; 333 long err = 0;
374 334
375 frame = get_sigframe(ka, regs, sizeof(*frame)); 335 frame = get_sigframe(ka, regs, sizeof(*frame));
376 336 if (unlikely(frame == NULL))
377 if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
378 goto badframe; 337 goto badframe;
379 338
380 err |= __put_user(&frame->info, &frame->pinfo); 339 err |= __put_user(&frame->info, &frame->pinfo);
@@ -411,7 +370,7 @@ static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info,
411 funct_desc_ptr = (func_descr_t __user *) ka->sa.sa_handler; 370 funct_desc_ptr = (func_descr_t __user *) ka->sa.sa_handler;
412 371
413 /* Allocate a dummy caller frame for the signal handler. */ 372 /* Allocate a dummy caller frame for the signal handler. */
414 newsp = (unsigned long)frame - __SIGNAL_FRAMESIZE; 373 newsp = ((unsigned long)frame) - __SIGNAL_FRAMESIZE;
415 err |= put_user(regs->gpr[1], (unsigned long __user *)newsp); 374 err |= put_user(regs->gpr[1], (unsigned long __user *)newsp);
416 375
417 /* Set up "regs" so we "return" to the signal handler. */ 376 /* Set up "regs" so we "return" to the signal handler. */
@@ -442,134 +401,3 @@ badframe:
442 force_sigsegv(signr, current); 401 force_sigsegv(signr, current);
443 return 0; 402 return 0;
444} 403}
445
446
447/*
448 * OK, we're invoking a handler
449 */
450static int handle_signal(unsigned long sig, struct k_sigaction *ka,
451 siginfo_t *info, sigset_t *oldset, struct pt_regs *regs)
452{
453 int ret;
454
455 /* Set up Signal Frame */
456 ret = setup_rt_frame(sig, ka, info, oldset, regs);
457
458 if (ret) {
459 spin_lock_irq(&current->sighand->siglock);
460 sigorsets(&current->blocked, &current->blocked, &ka->sa.sa_mask);
461 if (!(ka->sa.sa_flags & SA_NODEFER))
462 sigaddset(&current->blocked,sig);
463 recalc_sigpending();
464 spin_unlock_irq(&current->sighand->siglock);
465 }
466
467 return ret;
468}
469
470static inline void syscall_restart(struct pt_regs *regs, struct k_sigaction *ka)
471{
472 switch ((int)regs->result) {
473 case -ERESTART_RESTARTBLOCK:
474 case -ERESTARTNOHAND:
475 /* ERESTARTNOHAND means that the syscall should only be
476 * restarted if there was no handler for the signal, and since
477 * we only get here if there is a handler, we dont restart.
478 */
479 regs->result = -EINTR;
480 regs->gpr[3] = EINTR;
481 regs->ccr |= 0x10000000;
482 break;
483 case -ERESTARTSYS:
484 /* ERESTARTSYS means to restart the syscall if there is no
485 * handler or the handler was registered with SA_RESTART
486 */
487 if (!(ka->sa.sa_flags & SA_RESTART)) {
488 regs->result = -EINTR;
489 regs->gpr[3] = EINTR;
490 regs->ccr |= 0x10000000;
491 break;
492 }
493 /* fallthrough */
494 case -ERESTARTNOINTR:
495 /* ERESTARTNOINTR means that the syscall should be
496 * called again after the signal handler returns.
497 */
498 regs->gpr[3] = regs->orig_gpr3;
499 regs->nip -= 4;
500 regs->result = 0;
501 break;
502 }
503}
504
505/*
506 * Note that 'init' is a special process: it doesn't get signals it doesn't
507 * want to handle. Thus you cannot kill init even with a SIGKILL even by
508 * mistake.
509 */
510int do_signal(sigset_t *oldset, struct pt_regs *regs)
511{
512 siginfo_t info;
513 int signr;
514 struct k_sigaction ka;
515
516 /*
517 * If the current thread is 32 bit - invoke the
518 * 32 bit signal handling code
519 */
520 if (test_thread_flag(TIF_32BIT))
521 return do_signal32(oldset, regs);
522
523 if (test_thread_flag(TIF_RESTORE_SIGMASK))
524 oldset = &current->saved_sigmask;
525 else if (!oldset)
526 oldset = &current->blocked;
527
528 signr = get_signal_to_deliver(&info, &ka, regs, NULL);
529 if (signr > 0) {
530 int ret;
531
532 /* Whee! Actually deliver the signal. */
533 if (TRAP(regs) == 0x0C00)
534 syscall_restart(regs, &ka);
535
536 /*
537 * Reenable the DABR before delivering the signal to
538 * user space. The DABR will have been cleared if it
539 * triggered inside the kernel.
540 */
541 if (current->thread.dabr)
542 set_dabr(current->thread.dabr);
543
544 ret = handle_signal(signr, &ka, &info, oldset, regs);
545
546 /* If a signal was successfully delivered, the saved sigmask is in
547 its frame, and we can clear the TIF_RESTORE_SIGMASK flag */
548 if (ret && test_thread_flag(TIF_RESTORE_SIGMASK))
549 clear_thread_flag(TIF_RESTORE_SIGMASK);
550
551 return ret;
552 }
553
554 if (TRAP(regs) == 0x0C00) { /* System Call! */
555 if ((int)regs->result == -ERESTARTNOHAND ||
556 (int)regs->result == -ERESTARTSYS ||
557 (int)regs->result == -ERESTARTNOINTR) {
558 regs->gpr[3] = regs->orig_gpr3;
559 regs->nip -= 4; /* Back up & retry system call */
560 regs->result = 0;
561 } else if ((int)regs->result == -ERESTART_RESTARTBLOCK) {
562 regs->gpr[0] = __NR_restart_syscall;
563 regs->nip -= 4;
564 regs->result = 0;
565 }
566 }
567 /* No signal to deliver -- put the saved sigmask back */
568 if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
569 clear_thread_flag(TIF_RESTORE_SIGMASK);
570 sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
571 }
572
573 return 0;
574}
575EXPORT_SYMBOL(do_signal);
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index 68991c2d4a1b..55d29ed4b7a0 100644
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -442,12 +442,14 @@ int sysfs_add_device_to_node(struct sys_device *dev, int nid)
442 return sysfs_create_link(&node->sysdev.kobj, &dev->kobj, 442 return sysfs_create_link(&node->sysdev.kobj, &dev->kobj,
443 kobject_name(&dev->kobj)); 443 kobject_name(&dev->kobj));
444} 444}
445EXPORT_SYMBOL_GPL(sysfs_add_device_to_node);
445 446
446void sysfs_remove_device_from_node(struct sys_device *dev, int nid) 447void sysfs_remove_device_from_node(struct sys_device *dev, int nid)
447{ 448{
448 struct node *node = &node_devices[nid]; 449 struct node *node = &node_devices[nid];
449 sysfs_remove_link(&node->sysdev.kobj, kobject_name(&dev->kobj)); 450 sysfs_remove_link(&node->sysdev.kobj, kobject_name(&dev->kobj));
450} 451}
452EXPORT_SYMBOL_GPL(sysfs_remove_device_from_node);
451 453
452#else 454#else
453static void register_nodes(void) 455static void register_nodes(void)
@@ -457,9 +459,6 @@ static void register_nodes(void)
457 459
458#endif 460#endif
459 461
460EXPORT_SYMBOL_GPL(sysfs_add_device_to_node);
461EXPORT_SYMBOL_GPL(sysfs_remove_device_from_node);
462
463/* Only valid if CPU is present. */ 462/* Only valid if CPU is present. */
464static ssize_t show_physical_id(struct sys_device *dev, char *buf) 463static ssize_t show_physical_id(struct sys_device *dev, char *buf)
465{ 464{
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 2c8564d54e4d..e5df167f7824 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -77,9 +77,8 @@
77/* keep track of when we need to update the rtc */ 77/* keep track of when we need to update the rtc */
78time_t last_rtc_update; 78time_t last_rtc_update;
79#ifdef CONFIG_PPC_ISERIES 79#ifdef CONFIG_PPC_ISERIES
80unsigned long iSeries_recal_titan = 0; 80static unsigned long __initdata iSeries_recal_titan;
81unsigned long iSeries_recal_tb = 0; 81static signed long __initdata iSeries_recal_tb;
82static unsigned long first_settimeofday = 1;
83#endif 82#endif
84 83
85/* The decrementer counts down by 128 every 128ns on a 601. */ 84/* The decrementer counts down by 128 every 128ns on a 601. */
@@ -113,8 +112,9 @@ u64 ticklen_to_xs; /* 0.64 fraction */
113DEFINE_SPINLOCK(rtc_lock); 112DEFINE_SPINLOCK(rtc_lock);
114EXPORT_SYMBOL_GPL(rtc_lock); 113EXPORT_SYMBOL_GPL(rtc_lock);
115 114
116u64 tb_to_ns_scale; 115static u64 tb_to_ns_scale __read_mostly;
117unsigned tb_to_ns_shift; 116static unsigned tb_to_ns_shift __read_mostly;
117static unsigned long boot_tb __read_mostly;
118 118
119struct gettimeofday_struct do_gtod; 119struct gettimeofday_struct do_gtod;
120 120
@@ -214,7 +214,6 @@ static void account_process_time(struct pt_regs *regs)
214 run_posix_cpu_timers(current); 214 run_posix_cpu_timers(current);
215} 215}
216 216
217#ifdef CONFIG_PPC_SPLPAR
218/* 217/*
219 * Stuff for accounting stolen time. 218 * Stuff for accounting stolen time.
220 */ 219 */
@@ -222,19 +221,28 @@ struct cpu_purr_data {
222 int initialized; /* thread is running */ 221 int initialized; /* thread is running */
223 u64 tb; /* last TB value read */ 222 u64 tb; /* last TB value read */
224 u64 purr; /* last PURR value read */ 223 u64 purr; /* last PURR value read */
225 spinlock_t lock;
226}; 224};
227 225
226/*
227 * Each entry in the cpu_purr_data array is manipulated only by its
228 * "owner" cpu -- usually in the timer interrupt but also occasionally
229 * in process context for cpu online. As long as cpus do not touch
230 * each others' cpu_purr_data, disabling local interrupts is
231 * sufficient to serialize accesses.
232 */
228static DEFINE_PER_CPU(struct cpu_purr_data, cpu_purr_data); 233static DEFINE_PER_CPU(struct cpu_purr_data, cpu_purr_data);
229 234
230static void snapshot_tb_and_purr(void *data) 235static void snapshot_tb_and_purr(void *data)
231{ 236{
237 unsigned long flags;
232 struct cpu_purr_data *p = &__get_cpu_var(cpu_purr_data); 238 struct cpu_purr_data *p = &__get_cpu_var(cpu_purr_data);
233 239
240 local_irq_save(flags);
234 p->tb = mftb(); 241 p->tb = mftb();
235 p->purr = mfspr(SPRN_PURR); 242 p->purr = mfspr(SPRN_PURR);
236 wmb(); 243 wmb();
237 p->initialized = 1; 244 p->initialized = 1;
245 local_irq_restore(flags);
238} 246}
239 247
240/* 248/*
@@ -242,15 +250,14 @@ static void snapshot_tb_and_purr(void *data)
242 */ 250 */
243void snapshot_timebases(void) 251void snapshot_timebases(void)
244{ 252{
245 int cpu;
246
247 if (!cpu_has_feature(CPU_FTR_PURR)) 253 if (!cpu_has_feature(CPU_FTR_PURR))
248 return; 254 return;
249 for_each_possible_cpu(cpu)
250 spin_lock_init(&per_cpu(cpu_purr_data, cpu).lock);
251 on_each_cpu(snapshot_tb_and_purr, NULL, 0, 1); 255 on_each_cpu(snapshot_tb_and_purr, NULL, 0, 1);
252} 256}
253 257
258/*
259 * Must be called with interrupts disabled.
260 */
254void calculate_steal_time(void) 261void calculate_steal_time(void)
255{ 262{
256 u64 tb, purr; 263 u64 tb, purr;
@@ -262,7 +269,6 @@ void calculate_steal_time(void)
262 pme = &per_cpu(cpu_purr_data, smp_processor_id()); 269 pme = &per_cpu(cpu_purr_data, smp_processor_id());
263 if (!pme->initialized) 270 if (!pme->initialized)
264 return; /* this can happen in early boot */ 271 return; /* this can happen in early boot */
265 spin_lock(&pme->lock);
266 tb = mftb(); 272 tb = mftb();
267 purr = mfspr(SPRN_PURR); 273 purr = mfspr(SPRN_PURR);
268 stolen = (tb - pme->tb) - (purr - pme->purr); 274 stolen = (tb - pme->tb) - (purr - pme->purr);
@@ -270,9 +276,9 @@ void calculate_steal_time(void)
270 account_steal_time(current, stolen); 276 account_steal_time(current, stolen);
271 pme->tb = tb; 277 pme->tb = tb;
272 pme->purr = purr; 278 pme->purr = purr;
273 spin_unlock(&pme->lock);
274} 279}
275 280
281#ifdef CONFIG_PPC_SPLPAR
276/* 282/*
277 * Must be called before the cpu is added to the online map when 283 * Must be called before the cpu is added to the online map when
278 * a cpu is being brought up at runtime. 284 * a cpu is being brought up at runtime.
@@ -284,12 +290,12 @@ static void snapshot_purr(void)
284 290
285 if (!cpu_has_feature(CPU_FTR_PURR)) 291 if (!cpu_has_feature(CPU_FTR_PURR))
286 return; 292 return;
293 local_irq_save(flags);
287 pme = &per_cpu(cpu_purr_data, smp_processor_id()); 294 pme = &per_cpu(cpu_purr_data, smp_processor_id());
288 spin_lock_irqsave(&pme->lock, flags);
289 pme->tb = mftb(); 295 pme->tb = mftb();
290 pme->purr = mfspr(SPRN_PURR); 296 pme->purr = mfspr(SPRN_PURR);
291 pme->initialized = 1; 297 pme->initialized = 1;
292 spin_unlock_irqrestore(&pme->lock, flags); 298 local_irq_restore(flags);
293} 299}
294 300
295#endif /* CONFIG_PPC_SPLPAR */ 301#endif /* CONFIG_PPC_SPLPAR */
@@ -550,10 +556,15 @@ EXPORT_SYMBOL(profile_pc);
550 * returned by the service processor for the timebase frequency. 556 * returned by the service processor for the timebase frequency.
551 */ 557 */
552 558
553static void iSeries_tb_recal(void) 559static int __init iSeries_tb_recal(void)
554{ 560{
555 struct div_result divres; 561 struct div_result divres;
556 unsigned long titan, tb; 562 unsigned long titan, tb;
563
564 /* Make sure we only run on iSeries */
565 if (!firmware_has_feature(FW_FEATURE_ISERIES))
566 return -ENODEV;
567
557 tb = get_tb(); 568 tb = get_tb();
558 titan = HvCallXm_loadTod(); 569 titan = HvCallXm_loadTod();
559 if ( iSeries_recal_titan ) { 570 if ( iSeries_recal_titan ) {
@@ -594,8 +605,18 @@ static void iSeries_tb_recal(void)
594 } 605 }
595 iSeries_recal_titan = titan; 606 iSeries_recal_titan = titan;
596 iSeries_recal_tb = tb; 607 iSeries_recal_tb = tb;
608
609 return 0;
597} 610}
598#endif 611late_initcall(iSeries_tb_recal);
612
613/* Called from platform early init */
614void __init iSeries_time_init_early(void)
615{
616 iSeries_recal_tb = get_tb();
617 iSeries_recal_titan = HvCallXm_loadTod();
618}
619#endif /* CONFIG_PPC_ISERIES */
599 620
600/* 621/*
601 * For iSeries shared processors, we have to let the hypervisor 622 * For iSeries shared processors, we have to let the hypervisor
@@ -735,7 +756,7 @@ unsigned long long sched_clock(void)
735{ 756{
736 if (__USE_RTC()) 757 if (__USE_RTC())
737 return get_rtc(); 758 return get_rtc();
738 return mulhdu(get_tb(), tb_to_ns_scale) << tb_to_ns_shift; 759 return mulhdu(get_tb() - boot_tb, tb_to_ns_scale) << tb_to_ns_shift;
739} 760}
740 761
741int do_settimeofday(struct timespec *tv) 762int do_settimeofday(struct timespec *tv)
@@ -759,12 +780,6 @@ int do_settimeofday(struct timespec *tv)
759 * to the RTC again, or write to the RTC but then they don't call 780 * to the RTC again, or write to the RTC but then they don't call
760 * settimeofday to perform this operation. 781 * settimeofday to perform this operation.
761 */ 782 */
762#ifdef CONFIG_PPC_ISERIES
763 if (firmware_has_feature(FW_FEATURE_ISERIES) && first_settimeofday) {
764 iSeries_tb_recal();
765 first_settimeofday = 0;
766 }
767#endif
768 783
769 /* Make userspace gettimeofday spin until we're done. */ 784 /* Make userspace gettimeofday spin until we're done. */
770 ++vdso_data->tb_update_count; 785 ++vdso_data->tb_update_count;
@@ -960,6 +975,8 @@ void __init time_init(void)
960 } 975 }
961 tb_to_ns_scale = scale; 976 tb_to_ns_scale = scale;
962 tb_to_ns_shift = shift; 977 tb_to_ns_shift = shift;
978 /* Save the current timebase to pretty up CONFIG_PRINTK_TIME */
979 boot_tb = get_tb();
963 980
964 tm = get_boot_time(); 981 tm = get_boot_time();
965 982
diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index 4245579edb4e..cef01e4e8989 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -670,7 +670,7 @@ static int __init vdso_init(void)
670 /* 670 /*
671 * Fill up the "systemcfg" stuff for backward compatiblity 671 * Fill up the "systemcfg" stuff for backward compatiblity
672 */ 672 */
673 strcpy(vdso_data->eye_catcher, "SYSTEMCFG:PPC64"); 673 strcpy((char *)vdso_data->eye_catcher, "SYSTEMCFG:PPC64");
674 vdso_data->version.major = SYSTEMCFG_MAJOR; 674 vdso_data->version.major = SYSTEMCFG_MAJOR;
675 vdso_data->version.minor = SYSTEMCFG_MINOR; 675 vdso_data->version.minor = SYSTEMCFG_MINOR;
676 vdso_data->processor = mfspr(SPRN_PVR); 676 vdso_data->processor = mfspr(SPRN_PVR);
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index 21c39ff2dc39..ae4acd84143d 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -7,6 +7,7 @@
7#define PROVIDE32(x) PROVIDE(x) 7#define PROVIDE32(x) PROVIDE(x)
8#endif 8#endif
9#include <asm-generic/vmlinux.lds.h> 9#include <asm-generic/vmlinux.lds.h>
10#include <asm/cache.h>
10 11
11ENTRY(_stext) 12ENTRY(_stext)
12 13
@@ -211,6 +212,11 @@ SECTIONS
211 *(.data.cacheline_aligned) 212 *(.data.cacheline_aligned)
212 } 213 }
213 214
215 . = ALIGN(L1_CACHE_BYTES);
216 .data.read_mostly : {
217 *(.data.read_mostly)
218 }
219
214 . = ALIGN(PAGE_SIZE); 220 . = ALIGN(PAGE_SIZE);
215 __data_nosave : { 221 __data_nosave : {
216 __nosave_begin = .; 222 __nosave_begin = .;
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-23 03:46:01 -0500