1/* 2 * PowerNV OPAL API wrappers 3 * 4 * Copyright 2011 IBM Corp. 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * as published by the Free Software Foundation; either version 9 * 2 of the License, or (at your option) any later version. 10 */ 11 12#include <linux/jump_label.h> 13#include <asm/ppc_asm.h> 14#include <asm/hvcall.h> 15#include <asm/asm-offsets.h> 16#include <asm/opal.h> 17 18 .section ".text" 19 20#ifdef CONFIG_TRACEPOINTS 21#ifdef HAVE_JUMP_LABEL 22#define OPAL_BRANCH(LABEL) \ 23 ARCH_STATIC_BRANCH(LABEL, opal_tracepoint_key) 24#else 25 26 .section ".toc","aw" 27 28 .globl opal_tracepoint_refcount 29opal_tracepoint_refcount: 30 .llong 0 31 32 .section ".text" 33 34/* 35 * We branch around this in early init by using an unconditional cpu 36 * feature. 37 */ 38#define OPAL_BRANCH(LABEL) \ 39BEGIN_FTR_SECTION; \ 40 b 1f; \ 41END_FTR_SECTION(0, 1); \ 42 ld r11,opal_tracepoint_refcount@toc(r2); \ 43 cmpdi r11,0; \ 44 bne- LABEL; \ 451: 46 47#endif 48 49#else 50#define OPAL_BRANCH(LABEL) 51#endif 52 53/* TODO: 54 * 55 * - Trace irqs in/off (needs saving/restoring all args, argh...) 56 * - Get r11 feed up by Dave so I can have better register usage 57 */ 58 59#define OPAL_CALL(name, token) \ 60 _GLOBAL_TOC(name); \ 61 mfmsr r12; \ 62 mflr r0; \ 63 andi. r11,r12,MSR_IR|MSR_DR; \ 64 std r0,PPC_LR_STKOFF(r1); \ 65 li r0,token; \ 66 beq opal_real_call; \ 67 OPAL_BRANCH(opal_tracepoint_entry) \ 68 mfcr r11; \ 69 stw r11,8(r1); \ 70 li r11,0; \ 71 ori r11,r11,MSR_EE; \ 72 std r12,PACASAVEDMSR(r13); \ 73 andc r12,r12,r11; \ 74 mtmsrd r12,1; \ 75 LOAD_REG_ADDR(r11,opal_return); \ 76 mtlr r11; \ 77 li r11,MSR_DR|MSR_IR|MSR_LE;\ 78 andc r12,r12,r11; \ 79 mtspr SPRN_HSRR1,r12; \ 80 LOAD_REG_ADDR(r11,opal); \ 81 ld r12,8(r11); \ 82 ld r2,0(r11); \ 83 mtspr SPRN_HSRR0,r12; \ 84 hrfid 85 86opal_return: 87 /* 88 * Fixup endian on OPAL return... we should be able to simplify 89 * this by instead converting the below trampoline to a set of 90 * bytes (always BE) since MSR:LE will end up fixed up as a side 91 * effect of the rfid. 92 */ 93 FIXUP_ENDIAN 94 ld r2,PACATOC(r13); 95 lwz r4,8(r1); 96 ld r5,PPC_LR_STKOFF(r1); 97 ld r6,PACASAVEDMSR(r13); 98 mtspr SPRN_SRR0,r5; 99 mtspr SPRN_SRR1,r6; 100 mtcr r4; 101 rfid 102 103opal_real_call: 104 mfcr r11 105 stw r11,8(r1) 106 /* Set opal return address */ 107 LOAD_REG_ADDR(r11, opal_return_realmode) 108 mtlr r11 109 li r11,MSR_LE 110 andc r12,r12,r11 111 mtspr SPRN_HSRR1,r12 112 LOAD_REG_ADDR(r11,opal) 113 ld r12,8(r11) 114 ld r2,0(r11) 115 mtspr SPRN_HSRR0,r12 116 hrfid 117 118opal_return_realmode: 119 FIXUP_ENDIAN 120 ld r2,PACATOC(r13); 121 lwz r11,8(r1); 122 ld r12,PPC_LR_STKOFF(r1) 123 mtcr r11; 124 mtlr r12 125 blr 126 127#ifdef CONFIG_TRACEPOINTS 128opal_tracepoint_entry: 129 stdu r1,-STACKFRAMESIZE(r1) 130 std r0,STK_REG(R23)(r1) 131 std r3,STK_REG(R24)(r1) 132 std r4,STK_REG(R25)(r1) 133 std r5,STK_REG(R26)(r1) 134 std r6,STK_REG(R27)(r1) 135 std r7,STK_REG(R28)(r1) 136 std r8,STK_REG(R29)(r1) 137 std r9,STK_REG(R30)(r1) 138 std r10,STK_REG(R31)(r1) 139 mr r3,r0 140 addi r4,r1,STK_REG(R24) 141 bl __trace_opal_entry 142 ld r0,STK_REG(R23)(r1) 143 ld r3,STK_REG(R24)(r1) 144 ld r4,STK_REG(R25)(r1) 145 ld r5,STK_REG(R26)(r1) 146 ld r6,STK_REG(R27)(r1) 147 ld r7,STK_REG(R28)(r1) 148 ld r8,STK_REG(R29)(r1) 149 ld r9,STK_REG(R30)(r1) 150 ld r10,STK_REG(R31)(r1) 151 LOAD_REG_ADDR(r11,opal_tracepoint_return) 152 mfcr r12 153 std r11,16(r1) 154 stw r12,8(r1) 155 li r11,0 156 mfmsr r12 157 ori r11,r11,MSR_EE 158 std r12,PACASAVEDMSR(r13) 159 andc r12,r12,r11 160 mtmsrd r12,1 161 LOAD_REG_ADDR(r11,opal_return) 162 mtlr r11 163 li r11,MSR_DR|MSR_IR|MSR_LE 164 andc r12,r12,r11 165 mtspr SPRN_HSRR1,r12 166 LOAD_REG_ADDR(r11,opal) 167 ld r12,8(r11) 168 ld r2,0(r11) 169 mtspr SPRN_HSRR0,r12 170 hrfid 171 172opal_tracepoint_return: 173 std r3,STK_REG(R31)(r1) 174 mr r4,r3 175 ld r3,STK_REG(R23)(r1) 176 bl __trace_opal_exit 177 ld r3,STK_REG(R31)(r1) 178 addi r1,r1,STACKFRAMESIZE 179 ld r0,16(r1) 180 mtlr r0 181 blr 182#endif 183 184 185OPAL_CALL(opal_invalid_call, OPAL_INVALID_CALL); 186OPAL_CALL(opal_console_write, OPAL_CONSOLE_WRITE); 187OPAL_CALL(opal_console_read, OPAL_CONSOLE_READ); 188OPAL_CALL(opal_console_write_buffer_space, OPAL_CONSOLE_WRITE_BUFFER_SPACE); 189OPAL_CALL(opal_rtc_read, OPAL_RTC_READ); 190OPAL_CALL(opal_rtc_write, OPAL_RTC_WRITE); 191OPAL_CALL(opal_cec_power_down, OPAL_CEC_POWER_DOWN); 192OPAL_CALL(opal_cec_reboot, OPAL_CEC_REBOOT); 193OPAL_CALL(opal_cec_reboot2, OPAL_CEC_REBOOT2); 194OPAL_CALL(opal_read_nvram, OPAL_READ_NVRAM); 195OPAL_CALL(opal_write_nvram, OPAL_WRITE_NVRAM); 196OPAL_CALL(opal_handle_interrupt, OPAL_HANDLE_INTERRUPT); 197OPAL_CALL(opal_poll_events, OPAL_POLL_EVENTS); 198OPAL_CALL(opal_pci_set_hub_tce_memory, OPAL_PCI_SET_HUB_TCE_MEMORY); 199OPAL_CALL(opal_pci_set_phb_tce_memory, OPAL_PCI_SET_PHB_TCE_MEMORY); 200OPAL_CALL(opal_pci_config_read_byte, OPAL_PCI_CONFIG_READ_BYTE); 201OPAL_CALL(opal_pci_config_read_half_word, OPAL_PCI_CONFIG_READ_HALF_WORD); 202OPAL_CALL(opal_pci_config_read_word, OPAL_PCI_CONFIG_READ_WORD); 203OPAL_CALL(opal_pci_config_write_byte, OPAL_PCI_CONFIG_WRITE_BYTE); 204OPAL_CALL(opal_pci_config_write_half_word, OPAL_PCI_CONFIG_WRITE_HALF_WORD); 205OPAL_CALL(opal_pci_config_write_word, OPAL_PCI_CONFIG_WRITE_WORD); 206OPAL_CALL(opal_set_xive, OPAL_SET_XIVE); 207OPAL_CALL(opal_get_xive, OPAL_GET_XIVE); 208OPAL_CALL(opal_register_exception_handler, OPAL_REGISTER_OPAL_EXCEPTION_HANDLER); 209OPAL_CALL(opal_pci_eeh_freeze_status, OPAL_PCI_EEH_FREEZE_STATUS); 210OPAL_CALL(opal_pci_eeh_freeze_clear, OPAL_PCI_EEH_FREEZE_CLEAR); 211OPAL_CALL(opal_pci_eeh_freeze_set, OPAL_PCI_EEH_FREEZE_SET); 212OPAL_CALL(opal_pci_err_inject, OPAL_PCI_ERR_INJECT); 213OPAL_CALL(opal_pci_shpc, OPAL_PCI_SHPC); 214OPAL_CALL(opal_pci_phb_mmio_enable, OPAL_PCI_PHB_MMIO_ENABLE); 215OPAL_CALL(opal_pci_set_phb_mem_window, OPAL_PCI_SET_PHB_MEM_WINDOW); 216OPAL_CALL(opal_pci_map_pe_mmio_window, OPAL_PCI_MAP_PE_MMIO_WINDOW); 217OPAL_CALL(opal_pci_set_phb_table_memory, OPAL_PCI_SET_PHB_TABLE_MEMORY); 218OPAL_CALL(opal_pci_set_pe, OPAL_PCI_SET_PE); 219OPAL_CALL(opal_pci_set_peltv, OPAL_PCI_SET_PELTV); 220OPAL_CALL(opal_pci_set_mve, OPAL_PCI_SET_MVE); 221OPAL_CALL(opal_pci_set_mve_enable, OPAL_PCI_SET_MVE_ENABLE); 222OPAL_CALL(opal_pci_get_xive_reissue, OPAL_PCI_GET_XIVE_REISSUE); 223OPAL_CALL(opal_pci_set_xive_reissue, OPAL_PCI_SET_XIVE_REISSUE); 224OPAL_CALL(opal_pci_set_xive_pe, OPAL_PCI_SET_XIVE_PE); 225OPAL_CALL(opal_get_xive_source, OPAL_GET_XIVE_SOURCE); 226OPAL_CALL(opal_get_msi_32, OPAL_GET_MSI_32); 227OPAL_CALL(opal_get_msi_64, OPAL_GET_MSI_64); 228OPAL_CALL(opal_start_cpu, OPAL_START_CPU); 229OPAL_CALL(opal_query_cpu_status, OPAL_QUERY_CPU_STATUS); 230OPAL_CALL(opal_write_oppanel, OPAL_WRITE_OPPANEL); 231OPAL_CALL(opal_pci_map_pe_dma_window, OPAL_PCI_MAP_PE_DMA_WINDOW); 232OPAL_CALL(opal_pci_map_pe_dma_window_real, OPAL_PCI_MAP_PE_DMA_WINDOW_REAL); 233OPAL_CALL(opal_pci_reset, OPAL_PCI_RESET); 234OPAL_CALL(opal_pci_get_hub_diag_data, OPAL_PCI_GET_HUB_DIAG_DATA); 235OPAL_CALL(opal_pci_get_phb_diag_data, OPAL_PCI_GET_PHB_DIAG_DATA); 236OPAL_CALL(opal_pci_fence_phb, OPAL_PCI_FENCE_PHB); 237OPAL_CALL(opal_pci_reinit, OPAL_PCI_REINIT); 238OPAL_CALL(opal_pci_mask_pe_error, OPAL_PCI_MASK_PE_ERROR); 239OPAL_CALL(opal_set_slot_led_status, OPAL_SET_SLOT_LED_STATUS); 240OPAL_CALL(opal_get_epow_status, OPAL_GET_EPOW_STATUS); 241OPAL_CALL(opal_get_dpo_status, OPAL_GET_DPO_STATUS); 242OPAL_CALL(opal_set_system_attention_led, OPAL_SET_SYSTEM_ATTENTION_LED); 243OPAL_CALL(opal_pci_next_error, OPAL_PCI_NEXT_ERROR); 244OPAL_CALL(opal_pci_poll, OPAL_PCI_POLL); 245OPAL_CALL(opal_pci_msi_eoi, OPAL_PCI_MSI_EOI); 246OPAL_CALL(opal_pci_get_phb_diag_data2, OPAL_PCI_GET_PHB_DIAG_DATA2); 247OPAL_CALL(opal_xscom_read, OPAL_XSCOM_READ); 248OPAL_CALL(opal_xscom_write, OPAL_XSCOM_WRITE); 249OPAL_CALL(opal_lpc_read, OPAL_LPC_READ); 250OPAL_CALL(opal_lpc_write, OPAL_LPC_WRITE); 251OPAL_CALL(opal_return_cpu, OPAL_RETURN_CPU); 252OPAL_CALL(opal_reinit_cpus, OPAL_REINIT_CPUS); 253OPAL_CALL(opal_read_elog, OPAL_ELOG_READ); 254OPAL_CALL(opal_send_ack_elog, OPAL_ELOG_ACK); 255OPAL_CALL(opal_get_elog_size, OPAL_ELOG_SIZE); 256OPAL_CALL(opal_resend_pending_logs, OPAL_ELOG_RESEND); 257OPAL_CALL(opal_write_elog, OPAL_ELOG_WRITE); 258OPAL_CALL(opal_validate_flash, OPAL_FLASH_VALIDATE); 259OPAL_CALL(opal_manage_flash, OPAL_FLASH_MANAGE); 260OPAL_CALL(opal_update_flash, OPAL_FLASH_UPDATE); 261OPAL_CALL(opal_resync_timebase, OPAL_RESYNC_TIMEBASE); 262OPAL_CALL(opal_check_token, OPAL_CHECK_TOKEN); 263OPAL_CALL(opal_dump_init, OPAL_DUMP_INIT); 264OPAL_CALL(opal_dump_info, OPAL_DUMP_INFO); 265OPAL_CALL(opal_dump_info2, OPAL_DUMP_INFO2); 266OPAL_CALL(opal_dump_read, OPAL_DUMP_READ); 267OPAL_CALL(opal_dump_ack, OPAL_DUMP_ACK); 268OPAL_CALL(opal_get_msg, OPAL_GET_MSG); 269OPAL_CALL(opal_write_oppanel_async, OPAL_WRITE_OPPANEL_ASYNC); 270OPAL_CALL(opal_check_completion, OPAL_CHECK_ASYNC_COMPLETION); 271OPAL_CALL(opal_dump_resend_notification, OPAL_DUMP_RESEND); 272OPAL_CALL(opal_sync_host_reboot, OPAL_SYNC_HOST_REBOOT); 273OPAL_CALL(opal_sensor_read, OPAL_SENSOR_READ); 274OPAL_CALL(opal_get_param, OPAL_GET_PARAM); 275OPAL_CALL(opal_set_param, OPAL_SET_PARAM); 276OPAL_CALL(opal_handle_hmi, OPAL_HANDLE_HMI); 277OPAL_CALL(opal_config_cpu_idle_state, OPAL_CONFIG_CPU_IDLE_STATE); 278OPAL_CALL(opal_slw_set_reg, OPAL_SLW_SET_REG); 279OPAL_CALL(opal_register_dump_region, OPAL_REGISTER_DUMP_REGION); 280OPAL_CALL(opal_unregister_dump_region, OPAL_UNREGISTER_DUMP_REGION); 281OPAL_CALL(opal_pci_set_phb_cxl_mode, OPAL_PCI_SET_PHB_CAPI_MODE); 282OPAL_CALL(opal_tpo_write, OPAL_WRITE_TPO); 283OPAL_CALL(opal_tpo_read, OPAL_READ_TPO); 284OPAL_CALL(opal_ipmi_send, OPAL_IPMI_SEND); 285OPAL_CALL(opal_ipmi_recv, OPAL_IPMI_RECV); 286OPAL_CALL(opal_i2c_request, OPAL_I2C_REQUEST); 287OPAL_CALL(opal_flash_read, OPAL_FLASH_READ); 288OPAL_CALL(opal_flash_write, OPAL_FLASH_WRITE); 289OPAL_CALL(opal_flash_erase, OPAL_FLASH_ERASE); 290OPAL_CALL(opal_prd_msg, OPAL_PRD_MSG); 291OPAL_CALL(opal_leds_get_ind, OPAL_LEDS_GET_INDICATOR); 292OPAL_CALL(opal_leds_set_ind, OPAL_LEDS_SET_INDICATOR); 293OPAL_CALL(opal_console_flush, OPAL_CONSOLE_FLUSH); 294OPAL_CALL(opal_get_device_tree, OPAL_GET_DEVICE_TREE); 295OPAL_CALL(opal_pci_get_presence_state, OPAL_PCI_GET_PRESENCE_STATE); 296OPAL_CALL(opal_pci_get_power_state, OPAL_PCI_GET_POWER_STATE); 297OPAL_CALL(opal_pci_set_power_state, OPAL_PCI_SET_POWER_STATE); 298OPAL_CALL(opal_int_get_xirr, OPAL_INT_GET_XIRR); 299OPAL_CALL(opal_int_set_cppr, OPAL_INT_SET_CPPR); 300OPAL_CALL(opal_int_eoi, OPAL_INT_EOI); 301OPAL_CALL(opal_int_set_mfrr, OPAL_INT_SET_MFRR); 302OPAL_CALL(opal_pci_tce_kill, OPAL_PCI_TCE_KILL); 303OPAL_CALL(opal_nmmu_set_ptcr, OPAL_NMMU_SET_PTCR); 304