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#include <asm/asm-compat.h> 18#include <asm/feature-fixups.h> 19 20 .section ".text" 21 22#ifdef CONFIG_TRACEPOINTS 23#ifdef CONFIG_JUMP_LABEL 24#define OPAL_BRANCH(LABEL) \ 25 ARCH_STATIC_BRANCH(LABEL, opal_tracepoint_key) 26#else 27 28 .section ".toc","aw" 29 30 .globl opal_tracepoint_refcount 31opal_tracepoint_refcount: 32 .8byte 0 33 34 .section ".text" 35 36/* 37 * We branch around this in early init by using an unconditional cpu 38 * feature. 39 */ 40#define OPAL_BRANCH(LABEL) \ 41BEGIN_FTR_SECTION; \ 42 b 1f; \ 43END_FTR_SECTION(0, 1); \ 44 ld r11,opal_tracepoint_refcount@toc(r2); \ 45 cmpdi r11,0; \ 46 bne- LABEL; \ 471: 48 49#endif 50 51#else 52#define OPAL_BRANCH(LABEL) 53#endif 54 55/* 56 * DO_OPAL_CALL assumes: 57 * r0 = opal call token 58 * r12 = msr 59 * LR has been saved 60 */ 61#define DO_OPAL_CALL() \ 62 mfcr r11; \ 63 stw r11,8(r1); \ 64 li r11,0; \ 65 ori r11,r11,MSR_EE; \ 66 std r12,PACASAVEDMSR(r13); \ 67 andc r12,r12,r11; \ 68 mtmsrd r12,1; \ 69 LOAD_REG_ADDR(r11,opal_return); \ 70 mtlr r11; \ 71 li r11,MSR_DR|MSR_IR|MSR_LE;\ 72 andc r12,r12,r11; \ 73 mtspr SPRN_HSRR1,r12; \ 74 LOAD_REG_ADDR(r11,opal); \ 75 ld r12,8(r11); \ 76 ld r2,0(r11); \ 77 mtspr SPRN_HSRR0,r12; \ 78 hrfid 79 80#define OPAL_CALL(name, token) \ 81 _GLOBAL_TOC(name); \ 82 mfmsr r12; \ 83 mflr r0; \ 84 andi. r11,r12,MSR_IR|MSR_DR; \ 85 std r0,PPC_LR_STKOFF(r1); \ 86 li r0,token; \ 87 beq opal_real_call; \ 88 OPAL_BRANCH(opal_tracepoint_entry) \ 89 DO_OPAL_CALL() 90 91 92opal_return: 93 /* 94 * Fixup endian on OPAL return... we should be able to simplify 95 * this by instead converting the below trampoline to a set of 96 * bytes (always BE) since MSR:LE will end up fixed up as a side 97 * effect of the rfid. 98 */ 99 FIXUP_ENDIAN_HV 100 ld r2,PACATOC(r13); 101 lwz r4,8(r1); 102 ld r5,PPC_LR_STKOFF(r1); 103 ld r6,PACASAVEDMSR(r13); 104 mtcr r4; 105 mtspr SPRN_HSRR0,r5; 106 mtspr SPRN_HSRR1,r6; 107 hrfid 108 109opal_real_call: 110 mfcr r11 111 stw r11,8(r1) 112 /* Set opal return address */ 113 LOAD_REG_ADDR(r11, opal_return_realmode) 114 mtlr r11 115 li r11,MSR_LE 116 andc r12,r12,r11 117 mtspr SPRN_HSRR1,r12 118 LOAD_REG_ADDR(r11,opal) 119 ld r12,8(r11) 120 ld r2,0(r11) 121 mtspr SPRN_HSRR0,r12 122 hrfid 123 124opal_return_realmode: 125 FIXUP_ENDIAN_HV 126 ld r2,PACATOC(r13); 127 lwz r11,8(r1); 128 ld r12,PPC_LR_STKOFF(r1) 129 mtcr r11; 130 mtlr r12 131 blr 132 133#ifdef CONFIG_TRACEPOINTS 134opal_tracepoint_entry: 135 stdu r1,-STACKFRAMESIZE(r1) 136 std r0,STK_REG(R23)(r1) 137 std r3,STK_REG(R24)(r1) 138 std r4,STK_REG(R25)(r1) 139 std r5,STK_REG(R26)(r1) 140 std r6,STK_REG(R27)(r1) 141 std r7,STK_REG(R28)(r1) 142 std r8,STK_REG(R29)(r1) 143 std r9,STK_REG(R30)(r1) 144 std r10,STK_REG(R31)(r1) 145 mr r3,r0 146 addi r4,r1,STK_REG(R24) 147 bl __trace_opal_entry 148 ld r0,STK_REG(R23)(r1) 149 ld r3,STK_REG(R24)(r1) 150 ld r4,STK_REG(R25)(r1) 151 ld r5,STK_REG(R26)(r1) 152 ld r6,STK_REG(R27)(r1) 153 ld r7,STK_REG(R28)(r1) 154 ld r8,STK_REG(R29)(r1) 155 ld r9,STK_REG(R30)(r1) 156 ld r10,STK_REG(R31)(r1) 157 158 /* setup LR so we return via tracepoint_return */ 159 LOAD_REG_ADDR(r11,opal_tracepoint_return) 160 std r11,16(r1) 161 162 mfmsr r12 163 DO_OPAL_CALL() 164 165opal_tracepoint_return: 166 std r3,STK_REG(R31)(r1) 167 mr r4,r3 168 ld r3,STK_REG(R23)(r1) 169 bl __trace_opal_exit 170 ld r3,STK_REG(R31)(r1) 171 addi r1,r1,STACKFRAMESIZE 172 ld r0,16(r1) 173 mtlr r0 174 blr 175#endif 176 177 178OPAL_CALL(opal_invalid_call, OPAL_INVALID_CALL); 179OPAL_CALL(opal_console_write, OPAL_CONSOLE_WRITE); 180OPAL_CALL(opal_console_read, OPAL_CONSOLE_READ); 181OPAL_CALL(opal_console_write_buffer_space, OPAL_CONSOLE_WRITE_BUFFER_SPACE); 182OPAL_CALL(opal_rtc_read, OPAL_RTC_READ); 183OPAL_CALL(opal_rtc_write, OPAL_RTC_WRITE); 184OPAL_CALL(opal_cec_power_down, OPAL_CEC_POWER_DOWN); 185OPAL_CALL(opal_cec_reboot, OPAL_CEC_REBOOT); 186OPAL_CALL(opal_cec_reboot2, OPAL_CEC_REBOOT2); 187OPAL_CALL(opal_read_nvram, OPAL_READ_NVRAM); 188OPAL_CALL(opal_write_nvram, OPAL_WRITE_NVRAM); 189OPAL_CALL(opal_handle_interrupt, OPAL_HANDLE_INTERRUPT); 190OPAL_CALL(opal_poll_events, OPAL_POLL_EVENTS); 191OPAL_CALL(opal_pci_set_hub_tce_memory, OPAL_PCI_SET_HUB_TCE_MEMORY); 192OPAL_CALL(opal_pci_set_phb_tce_memory, OPAL_PCI_SET_PHB_TCE_MEMORY); 193OPAL_CALL(opal_pci_config_read_byte, OPAL_PCI_CONFIG_READ_BYTE); 194OPAL_CALL(opal_pci_config_read_half_word, OPAL_PCI_CONFIG_READ_HALF_WORD); 195OPAL_CALL(opal_pci_config_read_word, OPAL_PCI_CONFIG_READ_WORD); 196OPAL_CALL(opal_pci_config_write_byte, OPAL_PCI_CONFIG_WRITE_BYTE); 197OPAL_CALL(opal_pci_config_write_half_word, OPAL_PCI_CONFIG_WRITE_HALF_WORD); 198OPAL_CALL(opal_pci_config_write_word, OPAL_PCI_CONFIG_WRITE_WORD); 199OPAL_CALL(opal_set_xive, OPAL_SET_XIVE); 200OPAL_CALL(opal_get_xive, OPAL_GET_XIVE); 201OPAL_CALL(opal_register_exception_handler, OPAL_REGISTER_OPAL_EXCEPTION_HANDLER); 202OPAL_CALL(opal_pci_eeh_freeze_status, OPAL_PCI_EEH_FREEZE_STATUS); 203OPAL_CALL(opal_pci_eeh_freeze_clear, OPAL_PCI_EEH_FREEZE_CLEAR); 204OPAL_CALL(opal_pci_eeh_freeze_set, OPAL_PCI_EEH_FREEZE_SET); 205OPAL_CALL(opal_pci_err_inject, OPAL_PCI_ERR_INJECT); 206OPAL_CALL(opal_pci_shpc, OPAL_PCI_SHPC); 207OPAL_CALL(opal_pci_phb_mmio_enable, OPAL_PCI_PHB_MMIO_ENABLE); 208OPAL_CALL(opal_pci_set_phb_mem_window, OPAL_PCI_SET_PHB_MEM_WINDOW); 209OPAL_CALL(opal_pci_map_pe_mmio_window, OPAL_PCI_MAP_PE_MMIO_WINDOW); 210OPAL_CALL(opal_pci_set_phb_table_memory, OPAL_PCI_SET_PHB_TABLE_MEMORY); 211OPAL_CALL(opal_pci_set_pe, OPAL_PCI_SET_PE); 212OPAL_CALL(opal_pci_set_peltv, OPAL_PCI_SET_PELTV); 213OPAL_CALL(opal_pci_set_mve, OPAL_PCI_SET_MVE); 214OPAL_CALL(opal_pci_set_mve_enable, OPAL_PCI_SET_MVE_ENABLE); 215OPAL_CALL(opal_pci_get_xive_reissue, OPAL_PCI_GET_XIVE_REISSUE); 216OPAL_CALL(opal_pci_set_xive_reissue, OPAL_PCI_SET_XIVE_REISSUE); 217OPAL_CALL(opal_pci_set_xive_pe, OPAL_PCI_SET_XIVE_PE); 218OPAL_CALL(opal_get_xive_source, OPAL_GET_XIVE_SOURCE); 219OPAL_CALL(opal_get_msi_32, OPAL_GET_MSI_32); 220OPAL_CALL(opal_get_msi_64, OPAL_GET_MSI_64); 221OPAL_CALL(opal_start_cpu, OPAL_START_CPU); 222OPAL_CALL(opal_query_cpu_status, OPAL_QUERY_CPU_STATUS); 223OPAL_CALL(opal_write_oppanel, OPAL_WRITE_OPPANEL); 224OPAL_CALL(opal_pci_map_pe_dma_window, OPAL_PCI_MAP_PE_DMA_WINDOW); 225OPAL_CALL(opal_pci_map_pe_dma_window_real, OPAL_PCI_MAP_PE_DMA_WINDOW_REAL); 226OPAL_CALL(opal_pci_reset, OPAL_PCI_RESET); 227OPAL_CALL(opal_pci_get_hub_diag_data, OPAL_PCI_GET_HUB_DIAG_DATA); 228OPAL_CALL(opal_pci_get_phb_diag_data, OPAL_PCI_GET_PHB_DIAG_DATA); 229OPAL_CALL(opal_pci_fence_phb, OPAL_PCI_FENCE_PHB); 230OPAL_CALL(opal_pci_reinit, OPAL_PCI_REINIT); 231OPAL_CALL(opal_pci_mask_pe_error, OPAL_PCI_MASK_PE_ERROR); 232OPAL_CALL(opal_set_slot_led_status, OPAL_SET_SLOT_LED_STATUS); 233OPAL_CALL(opal_get_epow_status, OPAL_GET_EPOW_STATUS); 234OPAL_CALL(opal_get_dpo_status, OPAL_GET_DPO_STATUS); 235OPAL_CALL(opal_set_system_attention_led, OPAL_SET_SYSTEM_ATTENTION_LED); 236OPAL_CALL(opal_pci_next_error, OPAL_PCI_NEXT_ERROR); 237OPAL_CALL(opal_pci_poll, OPAL_PCI_POLL); 238OPAL_CALL(opal_pci_msi_eoi, OPAL_PCI_MSI_EOI); 239OPAL_CALL(opal_pci_get_phb_diag_data2, OPAL_PCI_GET_PHB_DIAG_DATA2); 240OPAL_CALL(opal_xscom_read, OPAL_XSCOM_READ); 241OPAL_CALL(opal_xscom_write, OPAL_XSCOM_WRITE); 242OPAL_CALL(opal_lpc_read, OPAL_LPC_READ); 243OPAL_CALL(opal_lpc_write, OPAL_LPC_WRITE); 244OPAL_CALL(opal_return_cpu, OPAL_RETURN_CPU); 245OPAL_CALL(opal_reinit_cpus, OPAL_REINIT_CPUS); 246OPAL_CALL(opal_read_elog, OPAL_ELOG_READ); 247OPAL_CALL(opal_send_ack_elog, OPAL_ELOG_ACK); 248OPAL_CALL(opal_get_elog_size, OPAL_ELOG_SIZE); 249OPAL_CALL(opal_resend_pending_logs, OPAL_ELOG_RESEND); 250OPAL_CALL(opal_write_elog, OPAL_ELOG_WRITE); 251OPAL_CALL(opal_validate_flash, OPAL_FLASH_VALIDATE); 252OPAL_CALL(opal_manage_flash, OPAL_FLASH_MANAGE); 253OPAL_CALL(opal_update_flash, OPAL_FLASH_UPDATE); 254OPAL_CALL(opal_resync_timebase, OPAL_RESYNC_TIMEBASE); 255OPAL_CALL(opal_check_token, OPAL_CHECK_TOKEN); 256OPAL_CALL(opal_dump_init, OPAL_DUMP_INIT); 257OPAL_CALL(opal_dump_info, OPAL_DUMP_INFO); 258OPAL_CALL(opal_dump_info2, OPAL_DUMP_INFO2); 259OPAL_CALL(opal_dump_read, OPAL_DUMP_READ); 260OPAL_CALL(opal_dump_ack, OPAL_DUMP_ACK); 261OPAL_CALL(opal_get_msg, OPAL_GET_MSG); 262OPAL_CALL(opal_write_oppanel_async, OPAL_WRITE_OPPANEL_ASYNC); 263OPAL_CALL(opal_check_completion, OPAL_CHECK_ASYNC_COMPLETION); 264OPAL_CALL(opal_dump_resend_notification, OPAL_DUMP_RESEND); 265OPAL_CALL(opal_sync_host_reboot, OPAL_SYNC_HOST_REBOOT); 266OPAL_CALL(opal_sensor_read, OPAL_SENSOR_READ); 267OPAL_CALL(opal_get_param, OPAL_GET_PARAM); 268OPAL_CALL(opal_set_param, OPAL_SET_PARAM); 269OPAL_CALL(opal_handle_hmi, OPAL_HANDLE_HMI); 270OPAL_CALL(opal_config_cpu_idle_state, OPAL_CONFIG_CPU_IDLE_STATE); 271OPAL_CALL(opal_slw_set_reg, OPAL_SLW_SET_REG); 272OPAL_CALL(opal_register_dump_region, OPAL_REGISTER_DUMP_REGION); 273OPAL_CALL(opal_unregister_dump_region, OPAL_UNREGISTER_DUMP_REGION); 274OPAL_CALL(opal_pci_set_phb_cxl_mode, OPAL_PCI_SET_PHB_CAPI_MODE); 275OPAL_CALL(opal_tpo_write, OPAL_WRITE_TPO); 276OPAL_CALL(opal_tpo_read, OPAL_READ_TPO); 277OPAL_CALL(opal_ipmi_send, OPAL_IPMI_SEND); 278OPAL_CALL(opal_ipmi_recv, OPAL_IPMI_RECV); 279OPAL_CALL(opal_i2c_request, OPAL_I2C_REQUEST); 280OPAL_CALL(opal_flash_read, OPAL_FLASH_READ); 281OPAL_CALL(opal_flash_write, OPAL_FLASH_WRITE); 282OPAL_CALL(opal_flash_erase, OPAL_FLASH_ERASE); 283OPAL_CALL(opal_prd_msg, OPAL_PRD_MSG); 284OPAL_CALL(opal_leds_get_ind, OPAL_LEDS_GET_INDICATOR); 285OPAL_CALL(opal_leds_set_ind, OPAL_LEDS_SET_INDICATOR); 286OPAL_CALL(opal_console_flush, OPAL_CONSOLE_FLUSH); 287OPAL_CALL(opal_get_device_tree, OPAL_GET_DEVICE_TREE); 288OPAL_CALL(opal_pci_get_presence_state, OPAL_PCI_GET_PRESENCE_STATE); 289OPAL_CALL(opal_pci_get_power_state, OPAL_PCI_GET_POWER_STATE); 290OPAL_CALL(opal_pci_set_power_state, OPAL_PCI_SET_POWER_STATE); 291OPAL_CALL(opal_int_get_xirr, OPAL_INT_GET_XIRR); 292OPAL_CALL(opal_int_set_cppr, OPAL_INT_SET_CPPR); 293OPAL_CALL(opal_int_eoi, OPAL_INT_EOI); 294OPAL_CALL(opal_int_set_mfrr, OPAL_INT_SET_MFRR); 295OPAL_CALL(opal_pci_tce_kill, OPAL_PCI_TCE_KILL); 296OPAL_CALL(opal_nmmu_set_ptcr, OPAL_NMMU_SET_PTCR); 297OPAL_CALL(opal_xive_reset, OPAL_XIVE_RESET); 298OPAL_CALL(opal_xive_get_irq_info, OPAL_XIVE_GET_IRQ_INFO); 299OPAL_CALL(opal_xive_get_irq_config, OPAL_XIVE_GET_IRQ_CONFIG); 300OPAL_CALL(opal_xive_set_irq_config, OPAL_XIVE_SET_IRQ_CONFIG); 301OPAL_CALL(opal_xive_get_queue_info, OPAL_XIVE_GET_QUEUE_INFO); 302OPAL_CALL(opal_xive_set_queue_info, OPAL_XIVE_SET_QUEUE_INFO); 303OPAL_CALL(opal_xive_donate_page, OPAL_XIVE_DONATE_PAGE); 304OPAL_CALL(opal_xive_alloc_vp_block, OPAL_XIVE_ALLOCATE_VP_BLOCK); 305OPAL_CALL(opal_xive_free_vp_block, OPAL_XIVE_FREE_VP_BLOCK); 306OPAL_CALL(opal_xive_allocate_irq, OPAL_XIVE_ALLOCATE_IRQ); 307OPAL_CALL(opal_xive_free_irq, OPAL_XIVE_FREE_IRQ); 308OPAL_CALL(opal_xive_get_vp_info, OPAL_XIVE_GET_VP_INFO); 309OPAL_CALL(opal_xive_set_vp_info, OPAL_XIVE_SET_VP_INFO); 310OPAL_CALL(opal_xive_sync, OPAL_XIVE_SYNC); 311OPAL_CALL(opal_xive_dump, OPAL_XIVE_DUMP); 312OPAL_CALL(opal_signal_system_reset, OPAL_SIGNAL_SYSTEM_RESET); 313OPAL_CALL(opal_npu_init_context, OPAL_NPU_INIT_CONTEXT); 314OPAL_CALL(opal_npu_destroy_context, OPAL_NPU_DESTROY_CONTEXT); 315OPAL_CALL(opal_npu_map_lpar, OPAL_NPU_MAP_LPAR); 316OPAL_CALL(opal_imc_counters_init, OPAL_IMC_COUNTERS_INIT); 317OPAL_CALL(opal_imc_counters_start, OPAL_IMC_COUNTERS_START); 318OPAL_CALL(opal_imc_counters_stop, OPAL_IMC_COUNTERS_STOP); 319OPAL_CALL(opal_pci_set_p2p, OPAL_PCI_SET_P2P); 320OPAL_CALL(opal_get_powercap, OPAL_GET_POWERCAP); 321OPAL_CALL(opal_set_powercap, OPAL_SET_POWERCAP); 322OPAL_CALL(opal_get_power_shift_ratio, OPAL_GET_POWER_SHIFT_RATIO); 323OPAL_CALL(opal_set_power_shift_ratio, OPAL_SET_POWER_SHIFT_RATIO); 324OPAL_CALL(opal_sensor_group_clear, OPAL_SENSOR_GROUP_CLEAR); 325OPAL_CALL(opal_quiesce, OPAL_QUIESCE); 326OPAL_CALL(opal_npu_spa_setup, OPAL_NPU_SPA_SETUP); 327OPAL_CALL(opal_npu_spa_clear_cache, OPAL_NPU_SPA_CLEAR_CACHE); 328OPAL_CALL(opal_npu_tl_set, OPAL_NPU_TL_SET); 329OPAL_CALL(opal_pci_get_pbcq_tunnel_bar, OPAL_PCI_GET_PBCQ_TUNNEL_BAR); 330OPAL_CALL(opal_pci_set_pbcq_tunnel_bar, OPAL_PCI_SET_PBCQ_TUNNEL_BAR); 331OPAL_CALL(opal_sensor_read_u64, OPAL_SENSOR_READ_U64); 332OPAL_CALL(opal_sensor_group_enable, OPAL_SENSOR_GROUP_ENABLE); 333OPAL_CALL(opal_nx_coproc_init, OPAL_NX_COPROC_INIT); 334