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authorMichael Neuling <mikey@neuling.org>2008-06-25 14:07:18 +1000
committerPaul Mackerras <paulus@samba.org>2008-07-01 11:28:47 +1000
commitb962ce9d26fd6677e6720949642420ceb029a102 (patch)
treedd05752d5f48204b3b87f8330be043b9c39745a8
parentc6e6771b87d4e339d27f1383c8a808ae9b4ee5b8 (diff)
powerpc: Add VSX CPU feature
Add a VSX CPU feature. Also add code to detect if VSX is available from the device tree. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Joel Schopp <jschopp@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
-rw-r--r--arch/powerpc/kernel/prom.c4
-rw-r--r--include/asm-powerpc/cputable.h15
2 files changed, 18 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 2aefe2a4129..87d83c56b31 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -609,6 +609,10 @@ static struct feature_property {
{"altivec", 0, CPU_FTR_ALTIVEC, PPC_FEATURE_HAS_ALTIVEC},
{"ibm,vmx", 1, CPU_FTR_ALTIVEC, PPC_FEATURE_HAS_ALTIVEC},
#endif /* CONFIG_ALTIVEC */
+#ifdef CONFIG_VSX
+ /* Yes, this _really_ is ibm,vmx == 2 to enable VSX */
+ {"ibm,vmx", 2, CPU_FTR_VSX, PPC_FEATURE_HAS_VSX},
+#endif /* CONFIG_VSX */
#ifdef CONFIG_PPC64
{"ibm,dfp", 1, 0, PPC_FEATURE_HAS_DFP},
{"ibm,purr", 1, CPU_FTR_PURR, 0},
diff --git a/include/asm-powerpc/cputable.h b/include/asm-powerpc/cputable.h
index 0d96b0284a7..4e4491cb9d3 100644
--- a/include/asm-powerpc/cputable.h
+++ b/include/asm-powerpc/cputable.h
@@ -25,6 +25,7 @@
#define PPC_FEATURE_HAS_DFP 0x00000400
#define PPC_FEATURE_POWER6_EXT 0x00000200
#define PPC_FEATURE_ARCH_2_06 0x00000100
+#define PPC_FEATURE_HAS_VSX 0x00000080
#define PPC_FEATURE_TRUE_LE 0x00000002
#define PPC_FEATURE_PPC_LE 0x00000001
@@ -183,6 +184,7 @@ extern void do_feature_fixups(unsigned long value, void *fixup_start,
#define CPU_FTR_DSCR LONG_ASM_CONST(0x0002000000000000)
#define CPU_FTR_1T_SEGMENT LONG_ASM_CONST(0x0004000000000000)
#define CPU_FTR_NO_SLBIE_B LONG_ASM_CONST(0x0008000000000000)
+#define CPU_FTR_VSX LONG_ASM_CONST(0x0010000000000000)
#ifndef __ASSEMBLY__
@@ -201,6 +203,17 @@ extern void do_feature_fixups(unsigned long value, void *fixup_start,
#define PPC_FEATURE_HAS_ALTIVEC_COMP 0
#endif
+/* We only set the VSX features if the kernel was compiled with VSX
+ * support
+ */
+#ifdef CONFIG_VSX
+#define CPU_FTR_VSX_COMP CPU_FTR_VSX
+#define PPC_FEATURE_HAS_VSX_COMP PPC_FEATURE_HAS_VSX
+#else
+#define CPU_FTR_VSX_COMP 0
+#define PPC_FEATURE_HAS_VSX_COMP 0
+#endif
+
/* We only set the spe features if the kernel was compiled with spe
* support
*/
@@ -404,7 +417,7 @@ extern void do_feature_fixups(unsigned long value, void *fixup_start,
(CPU_FTRS_POWER3 | CPU_FTRS_RS64 | CPU_FTRS_POWER4 | \
CPU_FTRS_PPC970 | CPU_FTRS_POWER5 | CPU_FTRS_POWER6 | \
CPU_FTRS_POWER7 | CPU_FTRS_CELL | CPU_FTRS_PA6T | \
- CPU_FTR_1T_SEGMENT)
+ CPU_FTR_1T_SEGMENT | CPU_FTR_VSX)
#else
enum {
CPU_FTRS_POSSIBLE =