| // SPDX-License-Identifier: GPL-2.0 |
| #include <linux/percpu.h> |
| #include <linux/jump_label.h> |
| #include <asm/interrupt.h> |
| #include <asm/opal-api.h> |
| #include <asm/trace.h> |
| #include <asm/asm-prototypes.h> |
| |
| #ifdef CONFIG_TRACEPOINTS |
| /* |
| * Since the tracing code might execute OPAL calls we need to guard against |
| * recursion. |
| */ |
| static DEFINE_PER_CPU(unsigned int, opal_trace_depth); |
| |
| static void __trace_opal_entry(s64 a0, s64 a1, s64 a2, s64 a3, |
| s64 a4, s64 a5, s64 a6, s64 a7, |
| unsigned long opcode) |
| { |
| unsigned int *depth; |
| unsigned long args[8]; |
| |
| depth = this_cpu_ptr(&opal_trace_depth); |
| |
| if (*depth) |
| return; |
| |
| args[0] = a0; |
| args[1] = a1; |
| args[2] = a2; |
| args[3] = a3; |
| args[4] = a4; |
| args[5] = a5; |
| args[6] = a6; |
| args[7] = a7; |
| |
| (*depth)++; |
| trace_opal_entry(opcode, &args[0]); |
| (*depth)--; |
| } |
| |
| static void __trace_opal_exit(unsigned long opcode, unsigned long retval) |
| { |
| unsigned int *depth; |
| |
| depth = this_cpu_ptr(&opal_trace_depth); |
| |
| if (*depth) |
| return; |
| |
| (*depth)++; |
| trace_opal_exit(opcode, retval); |
| (*depth)--; |
| } |
| |
| static DEFINE_STATIC_KEY_FALSE(opal_tracepoint_key); |
| |
| int opal_tracepoint_regfunc(void) |
| { |
| static_branch_inc(&opal_tracepoint_key); |
| return 0; |
| } |
| |
| void opal_tracepoint_unregfunc(void) |
| { |
| static_branch_dec(&opal_tracepoint_key); |
| } |
| |
| static s64 __opal_call_trace(s64 a0, s64 a1, s64 a2, s64 a3, |
| s64 a4, s64 a5, s64 a6, s64 a7, |
| unsigned long opcode, unsigned long msr) |
| { |
| s64 ret; |
| |
| __trace_opal_entry(a0, a1, a2, a3, a4, a5, a6, a7, opcode); |
| ret = __opal_call(a0, a1, a2, a3, a4, a5, a6, a7, opcode, msr); |
| __trace_opal_exit(opcode, ret); |
| |
| return ret; |
| } |
| |
| #define DO_TRACE (static_branch_unlikely(&opal_tracepoint_key)) |
| |
| #else /* CONFIG_TRACEPOINTS */ |
| |
| static s64 __opal_call_trace(s64 a0, s64 a1, s64 a2, s64 a3, |
| s64 a4, s64 a5, s64 a6, s64 a7, |
| unsigned long opcode, unsigned long msr) |
| { |
| return 0; |
| } |
| |
| #define DO_TRACE false |
| #endif /* CONFIG_TRACEPOINTS */ |
| |
| static int64_t opal_call(int64_t a0, int64_t a1, int64_t a2, int64_t a3, |
| int64_t a4, int64_t a5, int64_t a6, int64_t a7, int64_t opcode) |
| { |
| unsigned long flags; |
| unsigned long msr = mfmsr(); |
| bool mmu = (msr & (MSR_IR|MSR_DR)); |
| int64_t ret; |
| |
| /* OPAL call / firmware may use SRR and/or HSRR */ |
| srr_regs_clobbered(); |
| |
| msr &= ~MSR_EE; |
| |
| if (unlikely(!mmu)) |
| return __opal_call(a0, a1, a2, a3, a4, a5, a6, a7, opcode, msr); |
| |
| local_save_flags(flags); |
| hard_irq_disable(); |
| |
| if (DO_TRACE) { |
| ret = __opal_call_trace(a0, a1, a2, a3, a4, a5, a6, a7, opcode, msr); |
| } else { |
| ret = __opal_call(a0, a1, a2, a3, a4, a5, a6, a7, opcode, msr); |
| } |
| |
| local_irq_restore(flags); |
| |
| return ret; |
| } |
| |
| #define OPAL_CALL(name, opcode) \ |
| int64_t name(int64_t a0, int64_t a1, int64_t a2, int64_t a3, \ |
| int64_t a4, int64_t a5, int64_t a6, int64_t a7); \ |
| int64_t name(int64_t a0, int64_t a1, int64_t a2, int64_t a3, \ |
| int64_t a4, int64_t a5, int64_t a6, int64_t a7) \ |
| { \ |
| return opal_call(a0, a1, a2, a3, a4, a5, a6, a7, opcode); \ |
| } |
| |
| OPAL_CALL(opal_invalid_call, OPAL_INVALID_CALL); |
| OPAL_CALL(opal_console_write, OPAL_CONSOLE_WRITE); |
| OPAL_CALL(opal_console_read, OPAL_CONSOLE_READ); |
| OPAL_CALL(opal_console_write_buffer_space, OPAL_CONSOLE_WRITE_BUFFER_SPACE); |
| OPAL_CALL(opal_rtc_read, OPAL_RTC_READ); |
| OPAL_CALL(opal_rtc_write, OPAL_RTC_WRITE); |
| OPAL_CALL(opal_cec_power_down, OPAL_CEC_POWER_DOWN); |
| OPAL_CALL(opal_cec_reboot, OPAL_CEC_REBOOT); |
| OPAL_CALL(opal_cec_reboot2, OPAL_CEC_REBOOT2); |
| OPAL_CALL(opal_read_nvram, OPAL_READ_NVRAM); |
| OPAL_CALL(opal_write_nvram, OPAL_WRITE_NVRAM); |
| OPAL_CALL(opal_handle_interrupt, OPAL_HANDLE_INTERRUPT); |
| OPAL_CALL(opal_poll_events, OPAL_POLL_EVENTS); |
| OPAL_CALL(opal_pci_set_hub_tce_memory, OPAL_PCI_SET_HUB_TCE_MEMORY); |
| OPAL_CALL(opal_pci_set_phb_tce_memory, OPAL_PCI_SET_PHB_TCE_MEMORY); |
| OPAL_CALL(opal_pci_config_read_byte, OPAL_PCI_CONFIG_READ_BYTE); |
| OPAL_CALL(opal_pci_config_read_half_word, OPAL_PCI_CONFIG_READ_HALF_WORD); |
| OPAL_CALL(opal_pci_config_read_word, OPAL_PCI_CONFIG_READ_WORD); |
| OPAL_CALL(opal_pci_config_write_byte, OPAL_PCI_CONFIG_WRITE_BYTE); |
| OPAL_CALL(opal_pci_config_write_half_word, OPAL_PCI_CONFIG_WRITE_HALF_WORD); |
| OPAL_CALL(opal_pci_config_write_word, OPAL_PCI_CONFIG_WRITE_WORD); |
| OPAL_CALL(opal_set_xive, OPAL_SET_XIVE); |
| OPAL_CALL(opal_get_xive, OPAL_GET_XIVE); |
| OPAL_CALL(opal_register_exception_handler, OPAL_REGISTER_OPAL_EXCEPTION_HANDLER); |
| OPAL_CALL(opal_pci_eeh_freeze_status, OPAL_PCI_EEH_FREEZE_STATUS); |
| OPAL_CALL(opal_pci_eeh_freeze_clear, OPAL_PCI_EEH_FREEZE_CLEAR); |
| OPAL_CALL(opal_pci_eeh_freeze_set, OPAL_PCI_EEH_FREEZE_SET); |
| OPAL_CALL(opal_pci_err_inject, OPAL_PCI_ERR_INJECT); |
| OPAL_CALL(opal_pci_shpc, OPAL_PCI_SHPC); |
| OPAL_CALL(opal_pci_phb_mmio_enable, OPAL_PCI_PHB_MMIO_ENABLE); |
| OPAL_CALL(opal_pci_set_phb_mem_window, OPAL_PCI_SET_PHB_MEM_WINDOW); |
| OPAL_CALL(opal_pci_map_pe_mmio_window, OPAL_PCI_MAP_PE_MMIO_WINDOW); |
| OPAL_CALL(opal_pci_set_phb_table_memory, OPAL_PCI_SET_PHB_TABLE_MEMORY); |
| OPAL_CALL(opal_pci_set_pe, OPAL_PCI_SET_PE); |
| OPAL_CALL(opal_pci_set_peltv, OPAL_PCI_SET_PELTV); |
| OPAL_CALL(opal_pci_set_mve, OPAL_PCI_SET_MVE); |
| OPAL_CALL(opal_pci_set_mve_enable, OPAL_PCI_SET_MVE_ENABLE); |
| OPAL_CALL(opal_pci_get_xive_reissue, OPAL_PCI_GET_XIVE_REISSUE); |
| OPAL_CALL(opal_pci_set_xive_reissue, OPAL_PCI_SET_XIVE_REISSUE); |
| OPAL_CALL(opal_pci_set_xive_pe, OPAL_PCI_SET_XIVE_PE); |
| OPAL_CALL(opal_get_xive_source, OPAL_GET_XIVE_SOURCE); |
| OPAL_CALL(opal_get_msi_32, OPAL_GET_MSI_32); |
| OPAL_CALL(opal_get_msi_64, OPAL_GET_MSI_64); |
| OPAL_CALL(opal_start_cpu, OPAL_START_CPU); |
| OPAL_CALL(opal_query_cpu_status, OPAL_QUERY_CPU_STATUS); |
| OPAL_CALL(opal_write_oppanel, OPAL_WRITE_OPPANEL); |
| OPAL_CALL(opal_pci_map_pe_dma_window, OPAL_PCI_MAP_PE_DMA_WINDOW); |
| OPAL_CALL(opal_pci_map_pe_dma_window_real, OPAL_PCI_MAP_PE_DMA_WINDOW_REAL); |
| OPAL_CALL(opal_pci_reset, OPAL_PCI_RESET); |
| OPAL_CALL(opal_pci_get_hub_diag_data, OPAL_PCI_GET_HUB_DIAG_DATA); |
| OPAL_CALL(opal_pci_get_phb_diag_data, OPAL_PCI_GET_PHB_DIAG_DATA); |
| OPAL_CALL(opal_pci_fence_phb, OPAL_PCI_FENCE_PHB); |
| OPAL_CALL(opal_pci_reinit, OPAL_PCI_REINIT); |
| OPAL_CALL(opal_pci_mask_pe_error, OPAL_PCI_MASK_PE_ERROR); |
| OPAL_CALL(opal_set_slot_led_status, OPAL_SET_SLOT_LED_STATUS); |
| OPAL_CALL(opal_get_epow_status, OPAL_GET_EPOW_STATUS); |
| OPAL_CALL(opal_get_dpo_status, OPAL_GET_DPO_STATUS); |
| OPAL_CALL(opal_set_system_attention_led, OPAL_SET_SYSTEM_ATTENTION_LED); |
| OPAL_CALL(opal_pci_next_error, OPAL_PCI_NEXT_ERROR); |
| OPAL_CALL(opal_pci_poll, OPAL_PCI_POLL); |
| OPAL_CALL(opal_pci_msi_eoi, OPAL_PCI_MSI_EOI); |
| OPAL_CALL(opal_pci_get_phb_diag_data2, OPAL_PCI_GET_PHB_DIAG_DATA2); |
| OPAL_CALL(opal_xscom_read, OPAL_XSCOM_READ); |
| OPAL_CALL(opal_xscom_write, OPAL_XSCOM_WRITE); |
| OPAL_CALL(opal_lpc_read, OPAL_LPC_READ); |
| OPAL_CALL(opal_lpc_write, OPAL_LPC_WRITE); |
| OPAL_CALL(opal_return_cpu, OPAL_RETURN_CPU); |
| OPAL_CALL(opal_reinit_cpus, OPAL_REINIT_CPUS); |
| OPAL_CALL(opal_read_elog, OPAL_ELOG_READ); |
| OPAL_CALL(opal_send_ack_elog, OPAL_ELOG_ACK); |
| OPAL_CALL(opal_get_elog_size, OPAL_ELOG_SIZE); |
| OPAL_CALL(opal_resend_pending_logs, OPAL_ELOG_RESEND); |
| OPAL_CALL(opal_write_elog, OPAL_ELOG_WRITE); |
| OPAL_CALL(opal_validate_flash, OPAL_FLASH_VALIDATE); |
| OPAL_CALL(opal_manage_flash, OPAL_FLASH_MANAGE); |
| OPAL_CALL(opal_update_flash, OPAL_FLASH_UPDATE); |
| OPAL_CALL(opal_resync_timebase, OPAL_RESYNC_TIMEBASE); |
| OPAL_CALL(opal_check_token, OPAL_CHECK_TOKEN); |
| OPAL_CALL(opal_dump_init, OPAL_DUMP_INIT); |
| OPAL_CALL(opal_dump_info, OPAL_DUMP_INFO); |
| OPAL_CALL(opal_dump_info2, OPAL_DUMP_INFO2); |
| OPAL_CALL(opal_dump_read, OPAL_DUMP_READ); |
| OPAL_CALL(opal_dump_ack, OPAL_DUMP_ACK); |
| OPAL_CALL(opal_get_msg, OPAL_GET_MSG); |
| OPAL_CALL(opal_write_oppanel_async, OPAL_WRITE_OPPANEL_ASYNC); |
| OPAL_CALL(opal_check_completion, OPAL_CHECK_ASYNC_COMPLETION); |
| OPAL_CALL(opal_dump_resend_notification, OPAL_DUMP_RESEND); |
| OPAL_CALL(opal_sync_host_reboot, OPAL_SYNC_HOST_REBOOT); |
| OPAL_CALL(opal_sensor_read, OPAL_SENSOR_READ); |
| OPAL_CALL(opal_get_param, OPAL_GET_PARAM); |
| OPAL_CALL(opal_set_param, OPAL_SET_PARAM); |
| OPAL_CALL(opal_handle_hmi, OPAL_HANDLE_HMI); |
| OPAL_CALL(opal_handle_hmi2, OPAL_HANDLE_HMI2); |
| OPAL_CALL(opal_config_cpu_idle_state, OPAL_CONFIG_CPU_IDLE_STATE); |
| OPAL_CALL(opal_slw_set_reg, OPAL_SLW_SET_REG); |
| OPAL_CALL(opal_register_dump_region, OPAL_REGISTER_DUMP_REGION); |
| OPAL_CALL(opal_unregister_dump_region, OPAL_UNREGISTER_DUMP_REGION); |
| OPAL_CALL(opal_pci_set_phb_cxl_mode, OPAL_PCI_SET_PHB_CAPI_MODE); |
| OPAL_CALL(opal_tpo_write, OPAL_WRITE_TPO); |
| OPAL_CALL(opal_tpo_read, OPAL_READ_TPO); |
| OPAL_CALL(opal_ipmi_send, OPAL_IPMI_SEND); |
| OPAL_CALL(opal_ipmi_recv, OPAL_IPMI_RECV); |
| OPAL_CALL(opal_i2c_request, OPAL_I2C_REQUEST); |
| OPAL_CALL(opal_flash_read, OPAL_FLASH_READ); |
| OPAL_CALL(opal_flash_write, OPAL_FLASH_WRITE); |
| OPAL_CALL(opal_flash_erase, OPAL_FLASH_ERASE); |
| OPAL_CALL(opal_prd_msg, OPAL_PRD_MSG); |
| OPAL_CALL(opal_leds_get_ind, OPAL_LEDS_GET_INDICATOR); |
| OPAL_CALL(opal_leds_set_ind, OPAL_LEDS_SET_INDICATOR); |
| OPAL_CALL(opal_console_flush, OPAL_CONSOLE_FLUSH); |
| OPAL_CALL(opal_get_device_tree, OPAL_GET_DEVICE_TREE); |
| OPAL_CALL(opal_pci_get_presence_state, OPAL_PCI_GET_PRESENCE_STATE); |
| OPAL_CALL(opal_pci_get_power_state, OPAL_PCI_GET_POWER_STATE); |
| OPAL_CALL(opal_pci_set_power_state, OPAL_PCI_SET_POWER_STATE); |
| OPAL_CALL(opal_int_get_xirr, OPAL_INT_GET_XIRR); |
| OPAL_CALL(opal_int_set_cppr, OPAL_INT_SET_CPPR); |
| OPAL_CALL(opal_int_eoi, OPAL_INT_EOI); |
| OPAL_CALL(opal_int_set_mfrr, OPAL_INT_SET_MFRR); |
| OPAL_CALL(opal_pci_tce_kill, OPAL_PCI_TCE_KILL); |
| OPAL_CALL(opal_nmmu_set_ptcr, OPAL_NMMU_SET_PTCR); |
| OPAL_CALL(opal_xive_reset, OPAL_XIVE_RESET); |
| OPAL_CALL(opal_xive_get_irq_info, OPAL_XIVE_GET_IRQ_INFO); |
| OPAL_CALL(opal_xive_get_irq_config, OPAL_XIVE_GET_IRQ_CONFIG); |
| OPAL_CALL(opal_xive_set_irq_config, OPAL_XIVE_SET_IRQ_CONFIG); |
| OPAL_CALL(opal_xive_get_queue_info, OPAL_XIVE_GET_QUEUE_INFO); |
| OPAL_CALL(opal_xive_set_queue_info, OPAL_XIVE_SET_QUEUE_INFO); |
| OPAL_CALL(opal_xive_donate_page, OPAL_XIVE_DONATE_PAGE); |
| OPAL_CALL(opal_xive_alloc_vp_block, OPAL_XIVE_ALLOCATE_VP_BLOCK); |
| OPAL_CALL(opal_xive_free_vp_block, OPAL_XIVE_FREE_VP_BLOCK); |
| OPAL_CALL(opal_xive_allocate_irq_raw, OPAL_XIVE_ALLOCATE_IRQ); |
| OPAL_CALL(opal_xive_free_irq, OPAL_XIVE_FREE_IRQ); |
| OPAL_CALL(opal_xive_get_vp_info, OPAL_XIVE_GET_VP_INFO); |
| OPAL_CALL(opal_xive_set_vp_info, OPAL_XIVE_SET_VP_INFO); |
| OPAL_CALL(opal_xive_sync, OPAL_XIVE_SYNC); |
| OPAL_CALL(opal_xive_dump, OPAL_XIVE_DUMP); |
| OPAL_CALL(opal_xive_get_queue_state, OPAL_XIVE_GET_QUEUE_STATE); |
| OPAL_CALL(opal_xive_set_queue_state, OPAL_XIVE_SET_QUEUE_STATE); |
| OPAL_CALL(opal_xive_get_vp_state, OPAL_XIVE_GET_VP_STATE); |
| OPAL_CALL(opal_signal_system_reset, OPAL_SIGNAL_SYSTEM_RESET); |
| OPAL_CALL(opal_npu_map_lpar, OPAL_NPU_MAP_LPAR); |
| OPAL_CALL(opal_imc_counters_init, OPAL_IMC_COUNTERS_INIT); |
| OPAL_CALL(opal_imc_counters_start, OPAL_IMC_COUNTERS_START); |
| OPAL_CALL(opal_imc_counters_stop, OPAL_IMC_COUNTERS_STOP); |
| OPAL_CALL(opal_get_powercap, OPAL_GET_POWERCAP); |
| OPAL_CALL(opal_set_powercap, OPAL_SET_POWERCAP); |
| OPAL_CALL(opal_get_power_shift_ratio, OPAL_GET_POWER_SHIFT_RATIO); |
| OPAL_CALL(opal_set_power_shift_ratio, OPAL_SET_POWER_SHIFT_RATIO); |
| OPAL_CALL(opal_sensor_group_clear, OPAL_SENSOR_GROUP_CLEAR); |
| OPAL_CALL(opal_quiesce, OPAL_QUIESCE); |
| OPAL_CALL(opal_npu_spa_setup, OPAL_NPU_SPA_SETUP); |
| OPAL_CALL(opal_npu_spa_clear_cache, OPAL_NPU_SPA_CLEAR_CACHE); |
| OPAL_CALL(opal_npu_tl_set, OPAL_NPU_TL_SET); |
| OPAL_CALL(opal_pci_get_pbcq_tunnel_bar, OPAL_PCI_GET_PBCQ_TUNNEL_BAR); |
| OPAL_CALL(opal_pci_set_pbcq_tunnel_bar, OPAL_PCI_SET_PBCQ_TUNNEL_BAR); |
| OPAL_CALL(opal_sensor_read_u64, OPAL_SENSOR_READ_U64); |
| OPAL_CALL(opal_sensor_group_enable, OPAL_SENSOR_GROUP_ENABLE); |
| OPAL_CALL(opal_nx_coproc_init, OPAL_NX_COPROC_INIT); |
| OPAL_CALL(opal_mpipl_update, OPAL_MPIPL_UPDATE); |
| OPAL_CALL(opal_mpipl_register_tag, OPAL_MPIPL_REGISTER_TAG); |
| OPAL_CALL(opal_mpipl_query_tag, OPAL_MPIPL_QUERY_TAG); |
| OPAL_CALL(opal_secvar_get, OPAL_SECVAR_GET); |
| OPAL_CALL(opal_secvar_get_next, OPAL_SECVAR_GET_NEXT); |
| OPAL_CALL(opal_secvar_enqueue_update, OPAL_SECVAR_ENQUEUE_UPDATE); |
