diff options
Diffstat (limited to 'tools/testing/selftests/powerpc/pmu/ebb')
| -rw-r--r-- | tools/testing/selftests/powerpc/pmu/ebb/.gitignore | 2 | ||||
| -rw-r--r-- | tools/testing/selftests/powerpc/pmu/ebb/Makefile | 2 | ||||
| -rw-r--r-- | tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr.c | 143 | ||||
| -rw-r--r-- | tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr.h | 39 | ||||
| -rw-r--r-- | tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr_regs.c | 37 |
5 files changed, 1 insertions, 222 deletions
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/.gitignore b/tools/testing/selftests/powerpc/pmu/ebb/.gitignore index 44b7df14a936..42bddbed8b64 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/.gitignore +++ b/tools/testing/selftests/powerpc/pmu/ebb/.gitignore @@ -20,5 +20,3 @@ back_to_back_ebbs_test lost_exception_test no_handler_test cycles_with_mmcr2_test -ebb_lmr -ebb_lmr_regs
\ No newline at end of file diff --git a/tools/testing/selftests/powerpc/pmu/ebb/Makefile b/tools/testing/selftests/powerpc/pmu/ebb/Makefile index 6b0453e60d53..8d2279c4bb4b 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/Makefile +++ b/tools/testing/selftests/powerpc/pmu/ebb/Makefile @@ -14,7 +14,7 @@ TEST_PROGS := reg_access_test event_attributes_test cycles_test \ fork_cleanup_test ebb_on_child_test \ ebb_on_willing_child_test back_to_back_ebbs_test \ lost_exception_test no_handler_test \ - cycles_with_mmcr2_test ebb_lmr ebb_lmr_regs + cycles_with_mmcr2_test all: $(TEST_PROGS) diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr.c deleted file mode 100644 index c47ebd55ba4d..000000000000 --- a/tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr.c +++ /dev/null @@ -1,143 +0,0 @@ -/* - * Copyright 2016, Jack Miller, IBM Corp. - * Licensed under GPLv2. - */ - -#include <stdlib.h> -#include <stdio.h> - -#include "ebb.h" -#include "ebb_lmr.h" - -#define SIZE (32 * 1024 * 1024) /* 32M */ -#define LM_SIZE 0 /* Smallest encoding, 32M */ - -#define SECTIONS 64 /* 1 per bit in LMSER */ -#define SECTION_SIZE (SIZE / SECTIONS) -#define SECTION_LONGS (SECTION_SIZE / sizeof(long)) - -static unsigned long *test_mem; - -static int lmr_count = 0; - -void ebb_lmr_handler(void) -{ - lmr_count++; -} - -void ldmx_full_section(unsigned long *mem, int section) -{ - unsigned long *ptr; - int i; - - for (i = 0; i < SECTION_LONGS; i++) { - ptr = &mem[(SECTION_LONGS * section) + i]; - ldmx((unsigned long) &ptr); - ebb_lmr_reset(); - } -} - -unsigned long section_masks[] = { - 0x8000000000000000, - 0xFF00000000000000, - 0x0000000F70000000, - 0x8000000000000001, - 0xF0F0F0F0F0F0F0F0, - 0x0F0F0F0F0F0F0F0F, - 0x0 -}; - -int ebb_lmr_section_test(unsigned long *mem) -{ - unsigned long *mask = section_masks; - int i; - - for (; *mask; mask++) { - mtspr(SPRN_LMSER, *mask); - printf("Testing mask 0x%016lx\n", mfspr(SPRN_LMSER)); - - for (i = 0; i < 64; i++) { - lmr_count = 0; - ldmx_full_section(mem, i); - if (*mask & (1UL << (63 - i))) - FAIL_IF(lmr_count != SECTION_LONGS); - else - FAIL_IF(lmr_count); - } - } - - return 0; -} - -int ebb_lmr(void) -{ - int i; - - SKIP_IF(!lmr_is_supported()); - - setup_ebb_handler(ebb_lmr_handler); - - ebb_global_enable(); - - FAIL_IF(posix_memalign((void **)&test_mem, SIZE, SIZE) != 0); - - mtspr(SPRN_LMSER, 0); - - FAIL_IF(mfspr(SPRN_LMSER) != 0); - - mtspr(SPRN_LMRR, ((unsigned long)test_mem | LM_SIZE)); - - FAIL_IF(mfspr(SPRN_LMRR) != ((unsigned long)test_mem | LM_SIZE)); - - /* Read every single byte to ensure we get no false positives */ - for (i = 0; i < SECTIONS; i++) - ldmx_full_section(test_mem, i); - - FAIL_IF(lmr_count != 0); - - /* Turn on the first section */ - - mtspr(SPRN_LMSER, (1UL << 63)); - FAIL_IF(mfspr(SPRN_LMSER) != (1UL << 63)); - - /* Enable LM (BESCR) */ - - mtspr(SPRN_BESCR, mfspr(SPRN_BESCR) | BESCR_LME); - FAIL_IF(!(mfspr(SPRN_BESCR) & BESCR_LME)); - - ldmx((unsigned long)&test_mem); - - FAIL_IF(lmr_count != 1); // exactly one exception - FAIL_IF(mfspr(SPRN_BESCR) & BESCR_LME); // LM now disabled - FAIL_IF(!(mfspr(SPRN_BESCR) & BESCR_LMEO)); // occurred bit set - - printf("Simple LMR EBB OK\n"); - - /* This shouldn't cause an EBB since it's been disabled */ - ldmx((unsigned long)&test_mem); - FAIL_IF(lmr_count != 1); - - printf("LMR disable on EBB OK\n"); - - ebb_lmr_reset(); - - /* This should cause an EBB or reset is broken */ - ldmx((unsigned long)&test_mem); - FAIL_IF(lmr_count != 2); - - printf("LMR reset EBB OK\n"); - - ebb_lmr_reset(); - - return ebb_lmr_section_test(test_mem); -} - -int main(void) -{ - int ret = test_harness(ebb_lmr, "ebb_lmr"); - - if (test_mem) - free(test_mem); - - return ret; -} diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr.h b/tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr.h deleted file mode 100644 index ef50abd557cd..000000000000 --- a/tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr.h +++ /dev/null @@ -1,39 +0,0 @@ -#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 diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr_regs.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr_regs.c deleted file mode 100644 index aff4241fd88a..000000000000 --- a/tools/testing/selftests/powerpc/pmu/ebb/ebb_lmr_regs.c +++ /dev/null @@ -1,37 +0,0 @@ -/* - * Copyright 2016, Jack Miller, IBM Corp. - * Licensed under GPLv2. - */ - -#include <stdlib.h> -#include <stdio.h> -#include <unistd.h> - -#include "ebb.h" -#include "ebb_lmr.h" - -#define CHECKS 10000 - -int ebb_lmr_regs(void) -{ - int i; - - SKIP_IF(!lmr_is_supported()); - - ebb_global_enable(); - - for (i = 0; i < CHECKS; i++) { - mtspr(SPRN_LMRR, i << 25); // skip size and rsvd bits - mtspr(SPRN_LMSER, i); - - FAIL_IF(mfspr(SPRN_LMRR) != (i << 25)); - FAIL_IF(mfspr(SPRN_LMSER) != i); - } - - return 0; -} - -int main(void) -{ - return test_harness(ebb_lmr_regs, "ebb_lmr_regs"); -} |