diff options
| author |   Michael Neuling <mikey@neuling.org> | 2008-06-25 14:07:18 +1000 |
|---|---|---|
| committer |   Paul Mackerras <paulus@samba.org> | 2008-07-01 11:28:47 +1000 |
| commit | b962ce9d26fd6677e6720949642420ceb029a102 (patch) | |
| tree | dd05752d5f48204b3b87f8330be043b9c39745a8 | |
| parent | powerpc: Introduce VSX thread_struct and CONFIG_VSX (diff) | |
| download | linux-dev-b962ce9d26fd6677e6720949642420ceb029a102.tar.xz linux-dev-b962ce9d26fd6677e6720949642420ceb029a102.zip | |
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.c | 4 | ||||
| -rw-r--r-- | include/asm-powerpc/cputable.h | 15 |
2 files changed, 18 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index 2aefe2a4129a..87d83c56b31e 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 0d96b0284a73..4e4491cb9d3b 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 = |