---

yaml --- r: 67321 b: refs/heads/master c: 5e14d21 h: refs/heads/master i: 67319: c375408 v: v3
git-mirror · Sep 14, 2007 · 2ec990f · 2ec990f
1 parent 01e13db
commit 2ec990f
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Showing 6 changed files with 47 additions and 29 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d8f1324a5063c833862328ceafabc53ac3cc4f71
+refs/heads/master: 5e14d21e3f28a4181dacff0336040e30942f4921
diff --git a/trunk/arch/powerpc/kernel/cputable.c b/trunk/arch/powerpc/kernel/cputable.c
@@ -68,15 +68,6 @@ extern void __restore_cpu_ppc970(void);
 #define COMMON_USER_BOOKE	(PPC_FEATURE_32 | PPC_FEATURE_HAS_MMU | \
 				 PPC_FEATURE_BOOKE)
 
-/* We only set the spe features if the kernel was compiled with
- * spe support
- */
-#ifdef CONFIG_SPE
-#define PPC_FEATURE_SPE_COMP	PPC_FEATURE_HAS_SPE
-#else
-#define PPC_FEATURE_SPE_COMP	0
-#endif
-
 static struct cpu_spec cpu_specs[] = {
 #ifdef CONFIG_PPC64
 	{	/* Power3 */
@@ -1261,8 +1252,8 @@ static struct cpu_spec cpu_specs[] = {
 		/* xxx - galak: add CPU_FTR_MAYBE_CAN_DOZE */
 		.cpu_features		= CPU_FTRS_E200,
 		.cpu_user_features	= COMMON_USER_BOOKE |
-			PPC_FEATURE_SPE_COMP |
-			PPC_FEATURE_HAS_EFP_SINGLE |
+			PPC_FEATURE_HAS_SPE_COMP |
+			PPC_FEATURE_HAS_EFP_SINGLE_COMP |
 			PPC_FEATURE_UNIFIED_CACHE,
 		.dcache_bsize		= 32,
 		.platform		= "ppc5554",
@@ -1274,8 +1265,8 @@ static struct cpu_spec cpu_specs[] = {
 		/* xxx - galak: add CPU_FTR_MAYBE_CAN_DOZE */
 		.cpu_features		= CPU_FTRS_E500,
 		.cpu_user_features	= COMMON_USER_BOOKE |
-			PPC_FEATURE_SPE_COMP |
-			PPC_FEATURE_HAS_EFP_SINGLE,
+			PPC_FEATURE_HAS_SPE_COMP |
+			PPC_FEATURE_HAS_EFP_SINGLE_COMP,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
 		.num_pmcs		= 4,
@@ -1290,9 +1281,9 @@ static struct cpu_spec cpu_specs[] = {
 		/* xxx - galak: add CPU_FTR_MAYBE_CAN_DOZE */
 		.cpu_features		= CPU_FTRS_E500_2,
 		.cpu_user_features	= COMMON_USER_BOOKE |
-			PPC_FEATURE_SPE_COMP |
-			PPC_FEATURE_HAS_EFP_SINGLE |
-			PPC_FEATURE_HAS_EFP_DOUBLE,
+			PPC_FEATURE_HAS_SPE_COMP |
+			PPC_FEATURE_HAS_EFP_SINGLE_COMP |
+			PPC_FEATURE_HAS_EFP_DOUBLE_COMP,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
 		.num_pmcs		= 4,

diff --git a/trunk/arch/powerpc/kernel/entry_32.S b/trunk/arch/powerpc/kernel/entry_32.S
@@ -504,9 +504,11 @@ BEGIN_FTR_SECTION
 END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
 #endif /* CONFIG_ALTIVEC */
 #ifdef CONFIG_SPE
+BEGIN_FTR_SECTION
 	oris	r0,r0,MSR_SPE@h	 /* Disable SPE */
 	mfspr	r12,SPRN_SPEFSCR /* save spefscr register value */
 	stw	r12,THREAD+THREAD_SPEFSCR(r2)
+END_FTR_SECTION_IFSET(CPU_FTR_SPE)
 #endif /* CONFIG_SPE */
 	and.	r0,r0,r11	/* FP or altivec or SPE enabled? */
 	beq+	1f
@@ -542,8 +544,10 @@ BEGIN_FTR_SECTION
 END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
 #endif /* CONFIG_ALTIVEC */
 #ifdef CONFIG_SPE
+BEGIN_FTR_SECTION
 	lwz	r0,THREAD+THREAD_SPEFSCR(r2)
 	mtspr	SPRN_SPEFSCR,r0		/* restore SPEFSCR reg */
+END_FTR_SECTION_IFSET(CPU_FTR_SPE)
 #endif /* CONFIG_SPE */
 
 	lwz	r0,_CCR(r1)

diff --git a/trunk/arch/powerpc/kernel/process.c b/trunk/arch/powerpc/kernel/process.c
@@ -669,9 +669,13 @@ int set_fpexc_mode(struct task_struct *tsk, unsigned int val)
 	 * mode (asyn, precise, disabled) for 'Classic' FP. */
 	if (val & PR_FP_EXC_SW_ENABLE) {
 #ifdef CONFIG_SPE
-		tsk->thread.fpexc_mode = val &
-			(PR_FP_EXC_SW_ENABLE | PR_FP_ALL_EXCEPT);
-		return 0;
+		if (cpu_has_feature(CPU_FTR_SPE)) {
+			tsk->thread.fpexc_mode = val &
+				(PR_FP_EXC_SW_ENABLE | PR_FP_ALL_EXCEPT);
+			return 0;
+		} else {
+			return -EINVAL;
+		}
 #else
 		return -EINVAL;
 #endif
@@ -697,7 +701,10 @@ int get_fpexc_mode(struct task_struct *tsk, unsigned long adr)
 
 	if (tsk->thread.fpexc_mode & PR_FP_EXC_SW_ENABLE)
 #ifdef CONFIG_SPE
-		val = tsk->thread.fpexc_mode;
+		if (cpu_has_feature(CPU_FTR_SPE))
+			val = tsk->thread.fpexc_mode;
+		else
+			return -EINVAL;
 #else
 		return -EINVAL;
 #endif

diff --git a/trunk/arch/powerpc/kernel/ptrace.c b/trunk/arch/powerpc/kernel/ptrace.c
@@ -576,17 +576,15 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 #ifdef CONFIG_SPE
 	case PTRACE_GETEVRREGS:
 		/* Get the child spe register state. */
-		if (child->thread.regs->msr & MSR_SPE)
-			giveup_spe(child);
+		flush_spe_to_thread(child);
 		ret = get_evrregs((unsigned long __user *)data, child);
 		break;
 
 	case PTRACE_SETEVRREGS:
 		/* Set the child spe register state. */
 		/* this is to clear the MSR_SPE bit to force a reload
 		 * of register state from memory */
-		if (child->thread.regs->msr & MSR_SPE)
-			giveup_spe(child);
+		flush_spe_to_thread(child);
 		ret = set_evrregs(child, (unsigned long __user *)data);
 		break;
 #endif

diff --git a/trunk/include/asm-powerpc/cputable.h b/trunk/include/asm-powerpc/cputable.h
@@ -136,6 +136,7 @@ extern void do_feature_fixups(unsigned long value, void *fixup_start,
 #define CPU_FTR_REAL_LE			ASM_CONST(0x0000000000400000)
 #define CPU_FTR_FPU_UNAVAILABLE		ASM_CONST(0x0000000000800000)
 #define CPU_FTR_UNIFIED_ID_CACHE	ASM_CONST(0x0000000001000000)
+#define CPU_FTR_SPE			ASM_CONST(0x0000000002000000)
 
 /*
  * Add the 64-bit processor unique features in the top half of the word;
@@ -180,6 +181,21 @@ extern void do_feature_fixups(unsigned long value, void *fixup_start,
 #define PPC_FEATURE_HAS_ALTIVEC_COMP    0
 #endif
 
+/* We only set the spe features if the kernel was compiled with spe
+ * support
+ */
+#ifdef CONFIG_SPE
+#define CPU_FTR_SPE_COMP	CPU_FTR_SPE
+#define PPC_FEATURE_HAS_SPE_COMP PPC_FEATURE_HAS_SPE
+#define PPC_FEATURE_HAS_EFP_SINGLE_COMP PPC_FEATURE_HAS_EFP_SINGLE
+#define PPC_FEATURE_HAS_EFP_DOUBLE_COMP PPC_FEATURE_HAS_EFP_DOUBLE
+#else
+#define CPU_FTR_SPE_COMP	0
+#define PPC_FEATURE_HAS_SPE_COMP    0
+#define PPC_FEATURE_HAS_EFP_SINGLE_COMP 0
+#define PPC_FEATURE_HAS_EFP_DOUBLE_COMP 0
+#endif
+
 /* We need to mark all pages as being coherent if we're SMP or we
  * have a 74[45]x and an MPC107 host bridge. Also 83xx requires
  * it for PCI "streaming/prefetch" to work properly.
@@ -310,10 +326,12 @@ extern void do_feature_fixups(unsigned long value, void *fixup_start,
 #define CPU_FTRS_8XX	(CPU_FTR_USE_TB)
 #define CPU_FTRS_40X	(CPU_FTR_USE_TB | CPU_FTR_NODSISRALIGN)
 #define CPU_FTRS_44X	(CPU_FTR_USE_TB | CPU_FTR_NODSISRALIGN)
-#define CPU_FTRS_E200	(CPU_FTR_USE_TB | CPU_FTR_NODSISRALIGN | \
-	    CPU_FTR_COHERENT_ICACHE | CPU_FTR_UNIFIED_ID_CACHE)
-#define CPU_FTRS_E500	(CPU_FTR_USE_TB | CPU_FTR_NODSISRALIGN)
-#define CPU_FTRS_E500_2	(CPU_FTR_USE_TB | \
+#define CPU_FTRS_E200	(CPU_FTR_USE_TB | CPU_FTR_SPE_COMP | \
+	    CPU_FTR_NODSISRALIGN | CPU_FTR_COHERENT_ICACHE | \
+	    CPU_FTR_UNIFIED_ID_CACHE)
+#define CPU_FTRS_E500	(CPU_FTR_USE_TB | CPU_FTR_SPE_COMP | \
+	    CPU_FTR_NODSISRALIGN)
+#define CPU_FTRS_E500_2	(CPU_FTR_USE_TB | CPU_FTR_SPE_COMP | \
 	    CPU_FTR_BIG_PHYS | CPU_FTR_NODSISRALIGN)
 #define CPU_FTRS_GENERIC_32	(CPU_FTR_COMMON | CPU_FTR_NODSISRALIGN)