/* * PowerNV OPAL API wrappers * * Copyright 2011 IBM Corp. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #include <asm/ppc_asm.h> #include <asm/hvcall.h> #include <asm/asm-offsets.h> #include <asm/opal.h> #include <asm/jump_label.h> .section ".text" #ifdef CONFIG_TRACEPOINTS #ifdef CONFIG_JUMP_LABEL #define OPAL_BRANCH(LABEL) \ ARCH_STATIC_BRANCH(LABEL, opal_tracepoint_key) #else .section ".toc","aw" .globl opal_tracepoint_refcount opal_tracepoint_refcount: .llong 0 .section ".text" /* * We branch around this in early init by using an unconditional cpu * feature. */ #define OPAL_BRANCH(LABEL) \ BEGIN_FTR_SECTION; \ b 1f; \ END_FTR_SECTION(0, 1); \ ld r12,opal_tracepoint_refcount@toc(r2); \ std r12,32(r1); \ cmpdi r12,0; \ bne- LABEL; \ 1: #endif #else #define OPAL_BRANCH(LABEL) #endif /* TODO: * * - Trace irqs in/off (needs saving/restoring all args, argh...) * - Get r11 feed up by Dave so I can have better register usage */ #define OPAL_CALL(name, token) \ _GLOBAL_TOC(name); \ mflr r0; \ std r0,16(r1); \ li r0,token; \ OPAL_BRANCH(opal_tracepoint_entry) \ mfcr r12; \ stw r12,8(r1); \ std r1,PACAR1(r13); \ li r11,0; \ mfmsr r12; \ ori r11,r11,MSR_EE; \ std r12,PACASAVEDMSR(r13); \ andc r12,r12,r11; \ mtmsrd r12,1; \ LOAD_REG_ADDR(r11,opal_return); \ mtlr r11; \ li r11,MSR_DR|MSR_IR|MSR_LE;\ andc r12,r12,r11; \ mtspr SPRN_HSRR1,r12; \ LOAD_REG_ADDR(r11,opal); \ ld r12,8(r11); \ ld r2,0(r11); \ mtspr SPRN_HSRR0,r12; \ hrfid opal_return: /* * Fixup endian on OPAL return... we should be able to simplify * this by instead converting the below trampoline to a set of * bytes (always BE) since MSR:LE will end up fixed up as a side * effect of the rfid. */ FIXUP_ENDIAN ld r2,PACATOC(r13); lwz r4,8(r1); ld r5,16(r1); ld r6,PACASAVEDMSR(r13); mtspr SPRN_SRR0,r5; mtspr SPRN_SRR1,r6; mtcr r4; rfid #ifdef CONFIG_TRACEPOINTS opal_tracepoint_entry: stdu r1,-STACKFRAMESIZE(r1) std r0,STK_REG(R23)(r1) std r3,STK_REG(R24)(r1) std r4,STK_REG(R25)(r1) std r5,STK_REG(R26)(r1) std r6,STK_REG(R27)(r1) std r7,STK_REG(R28)(r1) std r8,STK_REG(R29)(r1) std r9,STK_REG(R30)(r1) std r10,STK_REG(R31)(r1) mr r3,r0 addi r4,r1,STK_REG(R24) bl __trace_opal_entry ld r0,STK_REG(R23)(r1) ld r3,STK_REG(R24)(r1) ld r4,STK_REG(R25)(r1) ld r5,STK_REG(R26)(r1) ld r6,STK_REG(R27)(r1) ld r7,STK_REG(R28)(r1) ld r8,STK_REG(R29)(r1) ld r9,STK_REG(R30)(r1) ld r10,STK_REG(R31)(r1) LOAD_REG_ADDR(r11,opal_tracepoint_return) mfcr r12 std r11,16(r1) stw r12,8(r1) std r1,PACAR1(r13) li r11,0 mfmsr r12 ori r11,r11,MSR_EE std r12,PACASAVEDMSR(r13) andc r12,r12,r11 mtmsrd r12,1 LOAD_REG_ADDR(r11,opal_return) mtlr r11 li r11,MSR_DR|MSR_IR|MSR_LE andc r12,r12,r11 mtspr SPRN_HSRR1,r12 LOAD_REG_ADDR(r11,opal) ld r12,8(r11) ld r2,0(r11) mtspr SPRN_HSRR0,r12 hrfid opal_tracepoint_return: std r3,STK_REG(R31)(r1) mr r4,r3 ld r0,STK_REG(R23)(r1) bl __trace_opal_exit ld r3,STK_REG(R31)(r1) addi r1,r1,STACKFRAMESIZE ld r0,16(r1) mtlr r0 blr #endif 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_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_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_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_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_CXL_MODE);