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-rw-r--r--arch/powerpc/kernel/cputable.c2
-rw-r--r--arch/powerpc/kernel/epapr_paravirt.c6
-rw-r--r--arch/powerpc/kernel/exceptions-64s.S178
-rw-r--r--arch/powerpc/kernel/prom_init.c14
-rw-r--r--arch/powerpc/kernel/ptrace.c1
5 files changed, 112 insertions, 89 deletions
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index 75a3d71b895d..19599ef352bc 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -275,7 +275,7 @@ static struct cpu_spec __initdata cpu_specs[] = {
275 .cpu_features = CPU_FTRS_PPC970, 275 .cpu_features = CPU_FTRS_PPC970,
276 .cpu_user_features = COMMON_USER_POWER4 | 276 .cpu_user_features = COMMON_USER_POWER4 |
277 PPC_FEATURE_HAS_ALTIVEC_COMP, 277 PPC_FEATURE_HAS_ALTIVEC_COMP,
278 .mmu_features = MMU_FTR_HPTE_TABLE, 278 .mmu_features = MMU_FTRS_PPC970,
279 .icache_bsize = 128, 279 .icache_bsize = 128,
280 .dcache_bsize = 128, 280 .dcache_bsize = 128,
281 .num_pmcs = 8, 281 .num_pmcs = 8,
diff --git a/arch/powerpc/kernel/epapr_paravirt.c b/arch/powerpc/kernel/epapr_paravirt.c
index f3eab8594d9f..d44a571e45a7 100644
--- a/arch/powerpc/kernel/epapr_paravirt.c
+++ b/arch/powerpc/kernel/epapr_paravirt.c
@@ -23,8 +23,10 @@
23#include <asm/code-patching.h> 23#include <asm/code-patching.h>
24#include <asm/machdep.h> 24#include <asm/machdep.h>
25 25
26#if !defined(CONFIG_64BIT) || defined(CONFIG_PPC_BOOK3E_64)
26extern void epapr_ev_idle(void); 27extern void epapr_ev_idle(void);
27extern u32 epapr_ev_idle_start[]; 28extern u32 epapr_ev_idle_start[];
29#endif
28 30
29bool epapr_paravirt_enabled; 31bool epapr_paravirt_enabled;
30 32
@@ -47,11 +49,15 @@ static int __init epapr_paravirt_init(void)
47 49
48 for (i = 0; i < (len / 4); i++) { 50 for (i = 0; i < (len / 4); i++) {
49 patch_instruction(epapr_hypercall_start + i, insts[i]); 51 patch_instruction(epapr_hypercall_start + i, insts[i]);
52#if !defined(CONFIG_64BIT) || defined(CONFIG_PPC_BOOK3E_64)
50 patch_instruction(epapr_ev_idle_start + i, insts[i]); 53 patch_instruction(epapr_ev_idle_start + i, insts[i]);
54#endif
51 } 55 }
52 56
57#if !defined(CONFIG_64BIT) || defined(CONFIG_PPC_BOOK3E_64)
53 if (of_get_property(hyper_node, "has-idle", NULL)) 58 if (of_get_property(hyper_node, "has-idle", NULL))
54 ppc_md.power_save = epapr_ev_idle; 59 ppc_md.power_save = epapr_ev_idle;
60#endif
55 61
56 epapr_paravirt_enabled = true; 62 epapr_paravirt_enabled = true;
57 63
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 87ef8f5ee5bc..56bd92362ce1 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -1066,78 +1066,6 @@ unrecov_user_slb:
1066#endif /* __DISABLED__ */ 1066#endif /* __DISABLED__ */
1067 1067
1068 1068
1069/*
1070 * r13 points to the PACA, r9 contains the saved CR,
1071 * r12 contain the saved SRR1, SRR0 is still ready for return
1072 * r3 has the faulting address
1073 * r9 - r13 are saved in paca->exslb.
1074 * r3 is saved in paca->slb_r3
1075 * We assume we aren't going to take any exceptions during this procedure.
1076 */
1077_GLOBAL(slb_miss_realmode)
1078 mflr r10
1079#ifdef CONFIG_RELOCATABLE
1080 mtctr r11
1081#endif
1082
1083 stw r9,PACA_EXSLB+EX_CCR(r13) /* save CR in exc. frame */
1084 std r10,PACA_EXSLB+EX_LR(r13) /* save LR */
1085
1086 bl .slb_allocate_realmode
1087
1088 /* All done -- return from exception. */
1089
1090 ld r10,PACA_EXSLB+EX_LR(r13)
1091 ld r3,PACA_EXSLB+EX_R3(r13)
1092 lwz r9,PACA_EXSLB+EX_CCR(r13) /* get saved CR */
1093
1094 mtlr r10
1095
1096 andi. r10,r12,MSR_RI /* check for unrecoverable exception */
1097 beq- 2f
1098
1099.machine push
1100.machine "power4"
1101 mtcrf 0x80,r9
1102 mtcrf 0x01,r9 /* slb_allocate uses cr0 and cr7 */
1103.machine pop
1104
1105 RESTORE_PPR_PACA(PACA_EXSLB, r9)
1106 ld r9,PACA_EXSLB+EX_R9(r13)
1107 ld r10,PACA_EXSLB+EX_R10(r13)
1108 ld r11,PACA_EXSLB+EX_R11(r13)
1109 ld r12,PACA_EXSLB+EX_R12(r13)
1110 ld r13,PACA_EXSLB+EX_R13(r13)
1111 rfid
1112 b . /* prevent speculative execution */
1113
11142: mfspr r11,SPRN_SRR0
1115 ld r10,PACAKBASE(r13)
1116 LOAD_HANDLER(r10,unrecov_slb)
1117 mtspr SPRN_SRR0,r10
1118 ld r10,PACAKMSR(r13)
1119 mtspr SPRN_SRR1,r10
1120 rfid
1121 b .
1122
1123unrecov_slb:
1124 EXCEPTION_PROLOG_COMMON(0x4100, PACA_EXSLB)
1125 DISABLE_INTS
1126 bl .save_nvgprs
11271: addi r3,r1,STACK_FRAME_OVERHEAD
1128 bl .unrecoverable_exception
1129 b 1b
1130
1131
1132#ifdef CONFIG_PPC_970_NAP
1133power4_fixup_nap:
1134 andc r9,r9,r10
1135 std r9,TI_LOCAL_FLAGS(r11)
1136 ld r10,_LINK(r1) /* make idle task do the */
1137 std r10,_NIP(r1) /* equivalent of a blr */
1138 blr
1139#endif
1140
1141 .align 7 1069 .align 7
1142 .globl alignment_common 1070 .globl alignment_common
1143alignment_common: 1071alignment_common:
@@ -1336,6 +1264,78 @@ _GLOBAL(opal_mc_secondary_handler)
1336 1264
1337 1265
1338/* 1266/*
1267 * r13 points to the PACA, r9 contains the saved CR,
1268 * r12 contain the saved SRR1, SRR0 is still ready for return
1269 * r3 has the faulting address
1270 * r9 - r13 are saved in paca->exslb.
1271 * r3 is saved in paca->slb_r3
1272 * We assume we aren't going to take any exceptions during this procedure.
1273 */
1274_GLOBAL(slb_miss_realmode)
1275 mflr r10
1276#ifdef CONFIG_RELOCATABLE
1277 mtctr r11
1278#endif
1279
1280 stw r9,PACA_EXSLB+EX_CCR(r13) /* save CR in exc. frame */
1281 std r10,PACA_EXSLB+EX_LR(r13) /* save LR */
1282
1283 bl .slb_allocate_realmode
1284
1285 /* All done -- return from exception. */
1286
1287 ld r10,PACA_EXSLB+EX_LR(r13)
1288 ld r3,PACA_EXSLB+EX_R3(r13)
1289 lwz r9,PACA_EXSLB+EX_CCR(r13) /* get saved CR */
1290
1291 mtlr r10
1292
1293 andi. r10,r12,MSR_RI /* check for unrecoverable exception */
1294 beq- 2f
1295
1296.machine push
1297.machine "power4"
1298 mtcrf 0x80,r9
1299 mtcrf 0x01,r9 /* slb_allocate uses cr0 and cr7 */
1300.machine pop
1301
1302 RESTORE_PPR_PACA(PACA_EXSLB, r9)
1303 ld r9,PACA_EXSLB+EX_R9(r13)
1304 ld r10,PACA_EXSLB+EX_R10(r13)
1305 ld r11,PACA_EXSLB+EX_R11(r13)
1306 ld r12,PACA_EXSLB+EX_R12(r13)
1307 ld r13,PACA_EXSLB+EX_R13(r13)
1308 rfid
1309 b . /* prevent speculative execution */
1310
13112: mfspr r11,SPRN_SRR0
1312 ld r10,PACAKBASE(r13)
1313 LOAD_HANDLER(r10,unrecov_slb)
1314 mtspr SPRN_SRR0,r10
1315 ld r10,PACAKMSR(r13)
1316 mtspr SPRN_SRR1,r10
1317 rfid
1318 b .
1319
1320unrecov_slb:
1321 EXCEPTION_PROLOG_COMMON(0x4100, PACA_EXSLB)
1322 DISABLE_INTS
1323 bl .save_nvgprs
13241: addi r3,r1,STACK_FRAME_OVERHEAD
1325 bl .unrecoverable_exception
1326 b 1b
1327
1328
1329#ifdef CONFIG_PPC_970_NAP
1330power4_fixup_nap:
1331 andc r9,r9,r10
1332 std r9,TI_LOCAL_FLAGS(r11)
1333 ld r10,_LINK(r1) /* make idle task do the */
1334 std r10,_NIP(r1) /* equivalent of a blr */
1335 blr
1336#endif
1337
1338/*
1339 * Hash table stuff 1339 * Hash table stuff
1340 */ 1340 */
1341 .align 7 1341 .align 7
@@ -1452,20 +1452,36 @@ do_ste_alloc:
1452_GLOBAL(do_stab_bolted) 1452_GLOBAL(do_stab_bolted)
1453 stw r9,PACA_EXSLB+EX_CCR(r13) /* save CR in exc. frame */ 1453 stw r9,PACA_EXSLB+EX_CCR(r13) /* save CR in exc. frame */
1454 std r11,PACA_EXSLB+EX_SRR0(r13) /* save SRR0 in exc. frame */ 1454 std r11,PACA_EXSLB+EX_SRR0(r13) /* save SRR0 in exc. frame */
1455 mfspr r11,SPRN_DAR /* ea */
1455 1456
1457 /*
1458 * check for bad kernel/user address
1459 * (ea & ~REGION_MASK) >= PGTABLE_RANGE
1460 */
1461 rldicr. r9,r11,4,(63 - 46 - 4)
1462 li r9,0 /* VSID = 0 for bad address */
1463 bne- 0f
1464
1465 /*
1466 * Calculate VSID:
1467 * This is the kernel vsid, we take the top for context from
1468 * the range. context = (MAX_USER_CONTEXT) + ((ea >> 60) - 0xc) + 1
1469 * Here we know that (ea >> 60) == 0xc
1470 */
1471 lis r9,(MAX_USER_CONTEXT + 1)@ha
1472 addi r9,r9,(MAX_USER_CONTEXT + 1)@l
1473
1474 srdi r10,r11,SID_SHIFT
1475 rldimi r10,r9,ESID_BITS,0 /* proto vsid */
1476 ASM_VSID_SCRAMBLE(r10, r9, 256M)
1477 rldic r9,r10,12,16 /* r9 = vsid << 12 */
1478
14790:
1456 /* Hash to the primary group */ 1480 /* Hash to the primary group */
1457 ld r10,PACASTABVIRT(r13) 1481 ld r10,PACASTABVIRT(r13)
1458 mfspr r11,SPRN_DAR 1482 srdi r11,r11,SID_SHIFT
1459 srdi r11,r11,28
1460 rldimi r10,r11,7,52 /* r10 = first ste of the group */ 1483 rldimi r10,r11,7,52 /* r10 = first ste of the group */
1461 1484
1462 /* Calculate VSID */
1463 /* This is a kernel address, so protovsid = ESID | 1 << 37 */
1464 li r9,0x1
1465 rldimi r11,r9,(CONTEXT_BITS + USER_ESID_BITS),0
1466 ASM_VSID_SCRAMBLE(r11, r9, 256M)
1467 rldic r9,r11,12,16 /* r9 = vsid << 12 */
1468
1469 /* Search the primary group for a free entry */ 1485 /* Search the primary group for a free entry */
14701: ld r11,0(r10) /* Test valid bit of the current ste */ 14861: ld r11,0(r10) /* Test valid bit of the current ste */
1471 andi. r11,r11,0x80 1487 andi. r11,r11,0x80
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 7f7fb7fd991b..13f8d168b3f1 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -2832,11 +2832,13 @@ static void unreloc_toc(void)
2832{ 2832{
2833} 2833}
2834#else 2834#else
2835static void __reloc_toc(void *tocstart, unsigned long offset, 2835static void __reloc_toc(unsigned long offset, unsigned long nr_entries)
2836 unsigned long nr_entries)
2837{ 2836{
2838 unsigned long i; 2837 unsigned long i;
2839 unsigned long *toc_entry = (unsigned long *)tocstart; 2838 unsigned long *toc_entry;
2839
2840 /* Get the start of the TOC by using r2 directly. */
2841 asm volatile("addi %0,2,-0x8000" : "=b" (toc_entry));
2840 2842
2841 for (i = 0; i < nr_entries; i++) { 2843 for (i = 0; i < nr_entries; i++) {
2842 *toc_entry = *toc_entry + offset; 2844 *toc_entry = *toc_entry + offset;
@@ -2850,8 +2852,7 @@ static void reloc_toc(void)
2850 unsigned long nr_entries = 2852 unsigned long nr_entries =
2851 (__prom_init_toc_end - __prom_init_toc_start) / sizeof(long); 2853 (__prom_init_toc_end - __prom_init_toc_start) / sizeof(long);
2852 2854
2853 /* Need to add offset to get at __prom_init_toc_start */ 2855 __reloc_toc(offset, nr_entries);
2854 __reloc_toc(__prom_init_toc_start + offset, offset, nr_entries);
2855 2856
2856 mb(); 2857 mb();
2857} 2858}
@@ -2864,8 +2865,7 @@ static void unreloc_toc(void)
2864 2865
2865 mb(); 2866 mb();
2866 2867
2867 /* __prom_init_toc_start has been relocated, no need to add offset */ 2868 __reloc_toc(-offset, nr_entries);
2868 __reloc_toc(__prom_init_toc_start, -offset, nr_entries);
2869} 2869}
2870#endif 2870#endif
2871#endif 2871#endif
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index 245c1b6a0858..f9b30c68ba47 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -1428,6 +1428,7 @@ static long ppc_set_hwdebug(struct task_struct *child,
1428 1428
1429 brk.address = bp_info->addr & ~7UL; 1429 brk.address = bp_info->addr & ~7UL;
1430 brk.type = HW_BRK_TYPE_TRANSLATE; 1430 brk.type = HW_BRK_TYPE_TRANSLATE;
1431 brk.len = 8;
1431 if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_READ) 1432 if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_READ)
1432 brk.type |= HW_BRK_TYPE_READ; 1433 brk.type |= HW_BRK_TYPE_READ;
1433 if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_WRITE) 1434 if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_WRITE)
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-16 19:28:44 -0500