diff options
Diffstat (limited to 'include/lib/pmf')
| -rw-r--r-- | include/lib/pmf/aarch32/pmf_asm_macros.S | 28 | ||||
| -rw-r--r-- | include/lib/pmf/aarch64/pmf_asm_macros.S | 30 | ||||
| -rw-r--r-- | include/lib/pmf/pmf.h | 75 | ||||
| -rw-r--r-- | include/lib/pmf/pmf_helpers.h | 256 |
4 files changed, 389 insertions, 0 deletions
diff --git a/include/lib/pmf/aarch32/pmf_asm_macros.S b/include/lib/pmf/aarch32/pmf_asm_macros.S new file mode 100644 index 0000000..1dbb408 --- /dev/null +++ b/include/lib/pmf/aarch32/pmf_asm_macros.S @@ -0,0 +1,28 @@ +/* + * Copyright (c) 2019, Arm Limited. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef PMF_ASM_MACROS_S +#define PMF_ASM_MACROS_S + +#define PMF_TS_SIZE 8 + + /* + * This macro calculates the address of the per-cpu timestamp + * for the given service name and local timestamp id. + * Clobbers: r0 - r4 + */ + .macro pmf_calc_timestamp_addr _name, _tid + mov r4, lr + bl plat_my_core_pos + mov lr, r4 + ldr r1, =__PERCPU_TIMESTAMP_SIZE__ + mov r2, #(\_tid * PMF_TS_SIZE) + mla r0, r0, r1, r2 + ldr r1, =pmf_ts_mem_\_name + add r0, r0, r1 + .endm + +#endif /* PMF_ASM_MACROS_S */ diff --git a/include/lib/pmf/aarch64/pmf_asm_macros.S b/include/lib/pmf/aarch64/pmf_asm_macros.S new file mode 100644 index 0000000..5f3e6b7 --- /dev/null +++ b/include/lib/pmf/aarch64/pmf_asm_macros.S @@ -0,0 +1,30 @@ +/* + * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef PMF_ASM_MACROS_S +#define PMF_ASM_MACROS_S + +#define PMF_TS_SIZE 8 + + /* + * This macro calculates the address of the per-cpu timestamp + * for the given service name and local timestamp id. + * Clobbers: x0 - x9 + */ + .macro pmf_calc_timestamp_addr _name, _tid + mov x9, x30 + bl plat_my_core_pos + mov x30, x9 + adr x2, __PMF_PERCPU_TIMESTAMP_END__ + adr x1, __PMF_TIMESTAMP_START__ + sub x1, x2, x1 + mov x2, #(\_tid * PMF_TS_SIZE) + madd x0, x0, x1, x2 + adr x1, pmf_ts_mem_\_name + add x0, x0, x1 + .endm + +#endif /* PMF_ASM_MACROS_S */ diff --git a/include/lib/pmf/pmf.h b/include/lib/pmf/pmf.h new file mode 100644 index 0000000..fa990d2 --- /dev/null +++ b/include/lib/pmf/pmf.h @@ -0,0 +1,75 @@ +/* + * Copyright (c) 2016-2020, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef PMF_H +#define PMF_H + +#include <lib/cassert.h> +#include <lib/pmf/pmf_helpers.h> +#include <lib/utils_def.h> + +/* + * Constants used for/by PMF services. + */ +#define PMF_ARM_TIF_IMPL_ID UL(0x41) +#define PMF_TID_SHIFT 0 +#define PMF_TID_MASK (UL(0xFF) << PMF_TID_SHIFT) +#define PMF_SVC_ID_SHIFT 10 +#define PMF_SVC_ID_MASK (UL(0x3F) << PMF_SVC_ID_SHIFT) +#define PMF_IMPL_ID_SHIFT 24 +#define PMF_IMPL_ID_MASK (UL(0xFF) << PMF_IMPL_ID_SHIFT) + +/* + * Flags passed to PMF_REGISTER_SERVICE + */ +#define PMF_STORE_ENABLE (1 << 0) +#define PMF_DUMP_ENABLE (1 << 1) + +/* + * Flags passed to PMF_GET_TIMESTAMP_XXX + * and PMF_CAPTURE_TIMESTAMP + */ +#define PMF_CACHE_MAINT (U(1) << 0) +#define PMF_NO_CACHE_MAINT U(0) + +/* + * Defines for PMF SMC function ids. + */ +#define PMF_SMC_GET_TIMESTAMP_32 U(0x82000010) +#define PMF_SMC_GET_TIMESTAMP_64 U(0xC2000010) +#define PMF_NUM_SMC_CALLS 2 + +/* + * The macros below are used to identify + * PMF calls from the SMC function ID. + */ +#define PMF_FID_MASK U(0xffe0) +#define PMF_FID_VALUE U(0) +#define is_pmf_fid(_fid) (((_fid) & PMF_FID_MASK) == PMF_FID_VALUE) + +/* Following are the supported PMF service IDs */ +#define PMF_PSCI_STAT_SVC_ID 0 +#define PMF_RT_INSTR_SVC_ID 1 + +/******************************************************************************* + * Function & variable prototypes + ******************************************************************************/ +/* PMF common functions */ +int pmf_get_timestamp_smc(unsigned int tid, + u_register_t mpidr, + unsigned int flags, + unsigned long long *ts_value); +int pmf_setup(void); +uintptr_t pmf_smc_handler(unsigned int smc_fid, + u_register_t x1, + u_register_t x2, + u_register_t x3, + u_register_t x4, + void *cookie, + void *handle, + u_register_t flags); + +#endif /* PMF_H */ diff --git a/include/lib/pmf/pmf_helpers.h b/include/lib/pmf/pmf_helpers.h new file mode 100644 index 0000000..b49c6da --- /dev/null +++ b/include/lib/pmf/pmf_helpers.h @@ -0,0 +1,256 @@ +/* + * Copyright (c) 2016-2020, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef PMF_HELPERS_H +#define PMF_HELPERS_H + +#include <assert.h> +#include <stddef.h> +#include <stdint.h> + +#include <arch_helpers.h> +#include <common/bl_common.h> +#include <plat/common/platform.h> + +/* + * Prototype for PMF service functions. + */ +typedef int (*pmf_svc_init_t)(void); +typedef unsigned long long (*pmf_svc_get_ts_t)(unsigned int tid, + u_register_t mpidr, + unsigned int flags); + +/* + * This is the definition of PMF service desc. + */ +typedef struct pmf_svc_desc { + /* Structure version information */ + param_header_t h; + + /* Name of the PMF service */ + const char *name; + + /* PMF service config: Implementer id, Service id and total id*/ + unsigned int svc_config; + + /* PMF service initialization handler */ + pmf_svc_init_t init; + + /* PMF service time-stamp retrieval handler */ + pmf_svc_get_ts_t get_ts; +} pmf_svc_desc_t; + +#if ENABLE_PMF +/* + * Convenience macros for capturing time-stamp. + */ +#define PMF_DECLARE_CAPTURE_TIMESTAMP(_name) \ + void pmf_capture_timestamp_with_cache_maint_ ## _name( \ + unsigned int tid, \ + unsigned long long ts); \ + void pmf_capture_timestamp_ ## _name( \ + unsigned int tid, \ + unsigned long long ts); + +#define PMF_CAPTURE_TIMESTAMP(_name, _tid, _flags) \ + do { \ + unsigned long long ts = read_cntpct_el0(); \ + if (((_flags) & PMF_CACHE_MAINT) != 0U) \ + pmf_capture_timestamp_with_cache_maint_ ## _name((_tid), ts);\ + else \ + pmf_capture_timestamp_ ## _name((_tid), ts); \ + } while (0) + +#define PMF_CAPTURE_AND_GET_TIMESTAMP(_name, _tid, _flags, _tsval) \ + do { \ + (_tsval) = read_cntpct_el0(); \ + CASSERT(sizeof(_tsval) == sizeof(unsigned long long), invalid_tsval_size);\ + if (((_flags) & PMF_CACHE_MAINT) != 0U) \ + pmf_capture_timestamp_with_cache_maint_ ## _name((_tid), (_tsval));\ + else \ + pmf_capture_timestamp_ ## _name((_tid), (_tsval));\ + } while (0) + +#define PMF_WRITE_TIMESTAMP(_name, _tid, _flags, _wrval) \ + do { \ + CASSERT(sizeof(_wrval) == sizeof(unsigned long long), invalid_wrval_size);\ + if (((_flags) & PMF_CACHE_MAINT) != 0U) \ + pmf_capture_timestamp_with_cache_maint_ ## _name((_tid), (_wrval));\ + else \ + pmf_capture_timestamp_ ## _name((_tid), (_wrval));\ + } while (0) + +/* + * Convenience macros for retrieving time-stamp. + */ +#define PMF_DECLARE_GET_TIMESTAMP(_name) \ + unsigned long long pmf_get_timestamp_by_index_ ## _name(\ + unsigned int tid, \ + unsigned int cpuid, \ + unsigned int flags); \ + unsigned long long pmf_get_timestamp_by_mpidr_ ## _name(\ + unsigned int tid, \ + u_register_t mpidr, \ + unsigned int flags); + +#define PMF_GET_TIMESTAMP_BY_MPIDR(_name, _tid, _mpidr, _flags, _tsval)\ + _tsval = pmf_get_timestamp_by_mpidr_ ## _name(_tid, _mpidr, _flags) + +#define PMF_GET_TIMESTAMP_BY_INDEX(_name, _tid, _cpuid, _flags, _tsval)\ + _tsval = pmf_get_timestamp_by_index_ ## _name(_tid, _cpuid, _flags) + +/* Convenience macros to register a PMF service.*/ +/* + * This macro is used to register a PMF Service. It allocates PMF memory + * and defines default service-specific PMF functions. + */ +#define PMF_REGISTER_SERVICE(_name, _svcid, _totalid, _flags) \ + PMF_ALLOCATE_TIMESTAMP_MEMORY(_name, _totalid) \ + PMF_DEFINE_CAPTURE_TIMESTAMP(_name, _flags) \ + PMF_DEFINE_GET_TIMESTAMP(_name) + +/* + * This macro is used to register a PMF service, including an + * SMC interface to that service. + */ +#define PMF_REGISTER_SERVICE_SMC(_name, _svcid, _totalid, _flags)\ + PMF_REGISTER_SERVICE(_name, _svcid, _totalid, _flags) \ + PMF_DEFINE_SERVICE_DESC(_name, PMF_ARM_TIF_IMPL_ID, \ + _svcid, _totalid, NULL, \ + pmf_get_timestamp_by_mpidr_ ## _name) + +/* + * This macro is used to register a PMF service that has an SMC interface + * but provides its own service-specific PMF functions. + */ +#define PMF_REGISTER_SERVICE_SMC_OWN(_name, _implid, _svcid, _totalid, \ + _init, _getts) \ + PMF_DEFINE_SERVICE_DESC(_name, _implid, _svcid, _totalid, \ + _init, _getts) + +#else + +#define PMF_REGISTER_SERVICE(_name, _svcid, _totalid, _flags) +#define PMF_REGISTER_SERVICE_SMC(_name, _svcid, _totalid, _flags) +#define PMF_REGISTER_SERVICE_SMC_OWN(_name, _implid, _svcid, _totalid, \ + _init, _getts) +#define PMF_DECLARE_CAPTURE_TIMESTAMP(_name) +#define PMF_DECLARE_GET_TIMESTAMP(_name) +#define PMF_CAPTURE_TIMESTAMP(_name, _tid, _flags) +#define PMF_GET_TIMESTAMP_BY_MPIDR(_name, _tid, _mpidr, _flags, _tsval) +#define PMF_GET_TIMESTAMP_BY_INDEX(_name, _tid, _cpuid, _flags, _tsval) + +#endif /* ENABLE_PMF */ + +/* + * Convenience macro to allocate memory for a PMF service. + * + * The extern declaration is there to satisfy MISRA C-2012 rule 8.4. + */ +#define PMF_ALLOCATE_TIMESTAMP_MEMORY(_name, _total_id) \ + extern unsigned long long pmf_ts_mem_ ## _name[_total_id]; \ + unsigned long long pmf_ts_mem_ ## _name[_total_id] \ + __aligned(CACHE_WRITEBACK_GRANULE) \ + __section("pmf_timestamp_array") \ + __used; + +/* + * Convenience macro to validate tid index for the given TS array. + */ +#define PMF_VALIDATE_TID(_name, _tid) \ + assert((_tid & PMF_TID_MASK) < (ARRAY_SIZE(pmf_ts_mem_ ## _name))) + +/* + * Convenience macros for capturing time-stamp. + * + * The extern declaration is there to satisfy MISRA C-2012 rule 8.4. + */ +#define PMF_DEFINE_CAPTURE_TIMESTAMP(_name, _flags) \ + void pmf_capture_timestamp_ ## _name( \ + unsigned int tid, \ + unsigned long long ts) \ + { \ + CASSERT(_flags != 0, select_proper_config); \ + PMF_VALIDATE_TID(_name, (uint64_t)tid); \ + uintptr_t base_addr = (uintptr_t) pmf_ts_mem_ ## _name; \ + if (((_flags) & PMF_STORE_ENABLE) != 0) \ + __pmf_store_timestamp(base_addr, \ + (uint64_t)tid, ts); \ + if (((_flags) & PMF_DUMP_ENABLE) != 0) \ + __pmf_dump_timestamp((uint64_t)tid, ts); \ + } \ + void pmf_capture_timestamp_with_cache_maint_ ## _name( \ + unsigned int tid, \ + unsigned long long ts) \ + { \ + CASSERT(_flags != 0, select_proper_config); \ + PMF_VALIDATE_TID(_name, (uint64_t)tid); \ + uintptr_t base_addr = (uintptr_t) pmf_ts_mem_ ## _name; \ + if (((_flags) & PMF_STORE_ENABLE) != 0) \ + __pmf_store_timestamp_with_cache_maint( \ + base_addr, (uint64_t)tid, ts); \ + if (((_flags) & PMF_DUMP_ENABLE) != 0) \ + __pmf_dump_timestamp((uint64_t)tid, ts); \ + } + +/* + * Convenience macros for retrieving time-stamp. + * + * The extern declaration is there to satisfy MISRA C-2012 rule 8.4. + */ +#define PMF_DEFINE_GET_TIMESTAMP(_name) \ + unsigned long long pmf_get_timestamp_by_index_ ## _name( \ + unsigned int tid, unsigned int cpuid, unsigned int flags)\ + { \ + PMF_VALIDATE_TID(_name, tid); \ + uintptr_t base_addr = (uintptr_t) pmf_ts_mem_ ## _name; \ + return __pmf_get_timestamp(base_addr, tid, cpuid, flags);\ + } \ + unsigned long long pmf_get_timestamp_by_mpidr_ ## _name( \ + unsigned int tid, u_register_t mpidr, unsigned int flags)\ + { \ + PMF_VALIDATE_TID(_name, tid); \ + uintptr_t base_addr = (uintptr_t) pmf_ts_mem_ ## _name; \ + return __pmf_get_timestamp(base_addr, tid, \ + plat_core_pos_by_mpidr(mpidr), flags); \ + } + +/* + * Convenience macro to register a PMF service. + * This is needed for services that require SMC handling. + */ +#define PMF_DEFINE_SERVICE_DESC(_name, _implid, _svcid, _totalid, \ + _init, _getts_by_mpidr) \ + static const pmf_svc_desc_t __pmf_desc_ ## _name \ + __section("pmf_svc_descs") __used = { \ + .h.type = PARAM_EP, \ + .h.version = VERSION_1, \ + .h.size = sizeof(pmf_svc_desc_t), \ + .h.attr = 0, \ + .name = #_name, \ + .svc_config = ((((_implid) << PMF_IMPL_ID_SHIFT) & \ + PMF_IMPL_ID_MASK) | \ + (((_svcid) << PMF_SVC_ID_SHIFT) & \ + PMF_SVC_ID_MASK) | \ + (((_totalid) << PMF_TID_SHIFT) & \ + PMF_TID_MASK)), \ + .init = _init, \ + .get_ts = _getts_by_mpidr \ + }; + +/* PMF internal functions */ +void __pmf_dump_timestamp(unsigned int tid, unsigned long long ts); +void __pmf_store_timestamp(uintptr_t base_addr, + unsigned int tid, + unsigned long long ts); +void __pmf_store_timestamp_with_cache_maint(uintptr_t base_addr, + unsigned int tid, + unsigned long long ts); +unsigned long long __pmf_get_timestamp(uintptr_t base_addr, + unsigned int tid, + unsigned int cpuid, + unsigned int flags); +#endif /* PMF_HELPERS_H */ |