diff options
Diffstat (limited to 'tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr.h')
-rw-r--r-- | tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr.h b/tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr.h new file mode 100644 index 000000000000..ef50abd557cd --- /dev/null +++ b/tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr.h @@ -0,0 +1,39 @@ +#ifndef _SELFTESTS_POWERPC_PMU_EBB_LMR_H +#define _SELFTESTS_POWERPC_PMU_EBB_LMR_H + +#include "reg.h" + +#ifndef PPC_FEATURE2_ARCH_3_00 +#define PPC_FEATURE2_ARCH_3_00 0x00800000 +#endif + +#define lmr_is_supported() have_hwcap2(PPC_FEATURE2_ARCH_3_00) + +static inline void ebb_lmr_reset(void) +{ + unsigned long bescr = mfspr(SPRN_BESCR); + bescr &= ~(BESCR_LMEO); + bescr |= BESCR_LME; + mtspr(SPRN_BESCR, bescr); +} + +#define LDMX(t, a, b)\ + (0x7c00026a | \ + (((t) & 0x1f) << 21) | \ + (((a) & 0x1f) << 16) | \ + (((b) & 0x1f) << 11)) + +static inline unsigned long ldmx(unsigned long address) +{ + unsigned long ret; + + asm volatile ("mr 9, %1\r\n" + ".long " __stringify(LDMX(9, 0, 9)) "\r\n" + "mr %0, 9\r\n":"=r"(ret) + :"r"(address) + :"r9"); + + return ret; +} + +#endif |