| /* |
| * 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 <linux/jump_label.h> |
| #include <asm/ppc_asm.h> |
| #include <asm/hvcall.h> |
| #include <asm/asm-offsets.h> |
| #include <asm/opal.h> |
| |
| .section ".text" |
| |
| #ifdef CONFIG_TRACEPOINTS |
| #ifdef HAVE_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); \ |
| 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 |
| |
| /* |
| * Make opal call in realmode. This is a generic function to be called |
| * from realmode. It handles endianness. |
| * |
| * r13 - paca pointer |
| * r1 - stack pointer |
| * r0 - opal token |
| */ |
| _GLOBAL(opal_call_realmode) |
| mflr r12 |
| std r12,PPC_LR_STKOFF(r1) |
| ld r2,PACATOC(r13) |
| /* Set opal return address */ |
| LOAD_REG_ADDR(r12,return_from_opal_call) |
| mtlr r12 |
| |
| mfmsr r12 |
| #ifdef __LITTLE_ENDIAN__ |
| /* Handle endian-ness */ |
| li r11,MSR_LE |
| andc r12,r12,r11 |
| #endif |
| mtspr SPRN_HSRR1,r12 |
| LOAD_REG_ADDR(r11,opal) |
| ld r12,8(r11) |
| ld r2,0(r11) |
| mtspr SPRN_HSRR0,r12 |
| hrfid |
| |
| return_from_opal_call: |
| #ifdef __LITTLE_ENDIAN__ |
| FIXUP_ENDIAN |
| #endif |
| ld r12,PPC_LR_STKOFF(r1) |
| mtlr r12 |
| blr |
| |
| 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_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_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); |
