| blob | 1b2936ba604087cc33673ebe5a564a5dca93a5e5 |
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 */
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>
18 .section ".text"
20 #ifdef CONFIG_TRACEPOINTS
21 #ifdef HAVE_JUMP_LABEL
22 #define OPAL_BRANCH(LABEL) \
23 ARCH_STATIC_BRANCH(LABEL, opal_tracepoint_key)
24 #else
26 .section ".toc","aw"
28 .globl opal_tracepoint_refcount
29 opal_tracepoint_refcount:
30 .8byte 0
32 .section ".text"
34 /*
35 * We branch around this in early init by using an unconditional cpu
36 * feature.
37 */
38 #define OPAL_BRANCH(LABEL) \
39 BEGIN_FTR_SECTION; \
40 b 1f; \
41 END_FTR_SECTION(0, 1); \
42 ld r11,opal_tracepoint_refcount@toc(r2); \
43 cmpdi r11,0; \
44 bne- LABEL; \
45 1:
47 #endif
49 #else
50 #define OPAL_BRANCH(LABEL)
51 #endif
53 /*
54 * DO_OPAL_CALL assumes:
55 * r0 = opal call token
56 * r12 = msr
57 * LR has been saved
58 */
59 #define DO_OPAL_CALL() \
60 mfcr r11; \
61 stw r11,8(r1); \
62 li r11,0; \
63 ori r11,r11,MSR_EE; \
64 std r12,PACASAVEDMSR(r13); \
65 andc r12,r12,r11; \
66 mtmsrd r12,1; \
67 LOAD_REG_ADDR(r11,opal_return); \
68 mtlr r11; \
69 li r11,MSR_DR|MSR_IR|MSR_LE;\
70 andc r12,r12,r11; \
71 mtspr SPRN_HSRR1,r12; \
72 LOAD_REG_ADDR(r11,opal); \
73 ld r12,8(r11); \
74 ld r2,0(r11); \
75 mtspr SPRN_HSRR0,r12; \
76 hrfid
78 #define OPAL_CALL(name, token) \
79 _GLOBAL_TOC(name); \
80 mfmsr r12; \
81 mflr r0; \
82 andi. r11,r12,MSR_IR|MSR_DR; \
83 std r0,PPC_LR_STKOFF(r1); \
84 li r0,token; \
85 beq opal_real_call; \
86 OPAL_BRANCH(opal_tracepoint_entry) \
87 DO_OPAL_CALL()
90 opal_return:
91 /*
92 * Fixup endian on OPAL return... we should be able to simplify
93 * this by instead converting the below trampoline to a set of
94 * bytes (always BE) since MSR:LE will end up fixed up as a side
95 * effect of the rfid.
96 */
97 FIXUP_ENDIAN_HV
98 ld r2,PACATOC(r13);
99 lwz r4,8(r1);
100 ld r5,PPC_LR_STKOFF(r1);
101 ld r6,PACASAVEDMSR(r13);
102 mtcr r4;
103 mtspr SPRN_HSRR0,r5;
104 mtspr SPRN_HSRR1,r6;
105 hrfid
107 opal_real_call:
108 mfcr r11
109 stw r11,8(r1)
110 /* Set opal return address */
111 LOAD_REG_ADDR(r11, opal_return_realmode)
112 mtlr r11
113 li r11,MSR_LE
114 andc r12,r12,r11
115 mtspr SPRN_HSRR1,r12
116 LOAD_REG_ADDR(r11,opal)
117 ld r12,8(r11)
118 ld r2,0(r11)
119 mtspr SPRN_HSRR0,r12
120 hrfid
122 opal_return_realmode:
123 FIXUP_ENDIAN_HV
124 ld r2,PACATOC(r13);
125 lwz r11,8(r1);
126 ld r12,PPC_LR_STKOFF(r1)
127 mtcr r11;
128 mtlr r12
129 blr
131 #ifdef CONFIG_TRACEPOINTS
132 opal_tracepoint_entry:
133 stdu r1,-STACKFRAMESIZE(r1)
134 std r0,STK_REG(R23)(r1)
135 std r3,STK_REG(R24)(r1)
136 std r4,STK_REG(R25)(r1)
137 std r5,STK_REG(R26)(r1)
138 std r6,STK_REG(R27)(r1)
139 std r7,STK_REG(R28)(r1)
140 std r8,STK_REG(R29)(r1)
141 std r9,STK_REG(R30)(r1)
142 std r10,STK_REG(R31)(r1)
143 mr r3,r0
144 addi r4,r1,STK_REG(R24)
145 bl __trace_opal_entry
146 ld r0,STK_REG(R23)(r1)
147 ld r3,STK_REG(R24)(r1)
148 ld r4,STK_REG(R25)(r1)
149 ld r5,STK_REG(R26)(r1)
150 ld r6,STK_REG(R27)(r1)
151 ld r7,STK_REG(R28)(r1)
152 ld r8,STK_REG(R29)(r1)
153 ld r9,STK_REG(R30)(r1)
154 ld r10,STK_REG(R31)(r1)
156 /* setup LR so we return via tracepoint_return */
157 LOAD_REG_ADDR(r11,opal_tracepoint_return)
158 std r11,16(r1)
160 mfmsr r12
161 DO_OPAL_CALL()
163 opal_tracepoint_return:
164 std r3,STK_REG(R31)(r1)
165 mr r4,r3
166 ld r3,STK_REG(R23)(r1)
167 bl __trace_opal_exit
168 ld r3,STK_REG(R31)(r1)
169 addi r1,r1,STACKFRAMESIZE
170 ld r0,16(r1)
171 mtlr r0
172 blr
173 #endif
176 OPAL_CALL(opal_invalid_call, OPAL_INVALID_CALL);
177 OPAL_CALL(opal_console_write, OPAL_CONSOLE_WRITE);
178 OPAL_CALL(opal_console_read, OPAL_CONSOLE_READ);
179 OPAL_CALL(opal_console_write_buffer_space, OPAL_CONSOLE_WRITE_BUFFER_SPACE);
180 OPAL_CALL(opal_rtc_read, OPAL_RTC_READ);
181 OPAL_CALL(opal_rtc_write, OPAL_RTC_WRITE);
182 OPAL_CALL(opal_cec_power_down, OPAL_CEC_POWER_DOWN);
183 OPAL_CALL(opal_cec_reboot, OPAL_CEC_REBOOT);
184 OPAL_CALL(opal_cec_reboot2, OPAL_CEC_REBOOT2);
185 OPAL_CALL(opal_read_nvram, OPAL_READ_NVRAM);
186 OPAL_CALL(opal_write_nvram, OPAL_WRITE_NVRAM);
187 OPAL_CALL(opal_handle_interrupt, OPAL_HANDLE_INTERRUPT);
188 OPAL_CALL(opal_poll_events, OPAL_POLL_EVENTS);
189 OPAL_CALL(opal_pci_set_hub_tce_memory, OPAL_PCI_SET_HUB_TCE_MEMORY);
190 OPAL_CALL(opal_pci_set_phb_tce_memory, OPAL_PCI_SET_PHB_TCE_MEMORY);
191 OPAL_CALL(opal_pci_config_read_byte, OPAL_PCI_CONFIG_READ_BYTE);
192 OPAL_CALL(opal_pci_config_read_half_word, OPAL_PCI_CONFIG_READ_HALF_WORD);
193 OPAL_CALL(opal_pci_config_read_word, OPAL_PCI_CONFIG_READ_WORD);
194 OPAL_CALL(opal_pci_config_write_byte, OPAL_PCI_CONFIG_WRITE_BYTE);
195 OPAL_CALL(opal_pci_config_write_half_word, OPAL_PCI_CONFIG_WRITE_HALF_WORD);
196 OPAL_CALL(opal_pci_config_write_word, OPAL_PCI_CONFIG_WRITE_WORD);
197 OPAL_CALL(opal_set_xive, OPAL_SET_XIVE);
198 OPAL_CALL(opal_get_xive, OPAL_GET_XIVE);
199 OPAL_CALL(opal_register_exception_handler, OPAL_REGISTER_OPAL_EXCEPTION_HANDLER);
200 OPAL_CALL(opal_pci_eeh_freeze_status, OPAL_PCI_EEH_FREEZE_STATUS);
201 OPAL_CALL(opal_pci_eeh_freeze_clear, OPAL_PCI_EEH_FREEZE_CLEAR);
202 OPAL_CALL(opal_pci_eeh_freeze_set, OPAL_PCI_EEH_FREEZE_SET);
203 OPAL_CALL(opal_pci_err_inject, OPAL_PCI_ERR_INJECT);
204 OPAL_CALL(opal_pci_shpc, OPAL_PCI_SHPC);
205 OPAL_CALL(opal_pci_phb_mmio_enable, OPAL_PCI_PHB_MMIO_ENABLE);
206 OPAL_CALL(opal_pci_set_phb_mem_window, OPAL_PCI_SET_PHB_MEM_WINDOW);
207 OPAL_CALL(opal_pci_map_pe_mmio_window, OPAL_PCI_MAP_PE_MMIO_WINDOW);
208 OPAL_CALL(opal_pci_set_phb_table_memory, OPAL_PCI_SET_PHB_TABLE_MEMORY);
209 OPAL_CALL(opal_pci_set_pe, OPAL_PCI_SET_PE);
210 OPAL_CALL(opal_pci_set_peltv, OPAL_PCI_SET_PELTV);
211 OPAL_CALL(opal_pci_set_mve, OPAL_PCI_SET_MVE);
212 OPAL_CALL(opal_pci_set_mve_enable, OPAL_PCI_SET_MVE_ENABLE);
213 OPAL_CALL(opal_pci_get_xive_reissue, OPAL_PCI_GET_XIVE_REISSUE);
214 OPAL_CALL(opal_pci_set_xive_reissue, OPAL_PCI_SET_XIVE_REISSUE);
215 OPAL_CALL(opal_pci_set_xive_pe, OPAL_PCI_SET_XIVE_PE);
216 OPAL_CALL(opal_get_xive_source, OPAL_GET_XIVE_SOURCE);
217 OPAL_CALL(opal_get_msi_32, OPAL_GET_MSI_32);
218 OPAL_CALL(opal_get_msi_64, OPAL_GET_MSI_64);
219 OPAL_CALL(opal_start_cpu, OPAL_START_CPU);
220 OPAL_CALL(opal_query_cpu_status, OPAL_QUERY_CPU_STATUS);
221 OPAL_CALL(opal_write_oppanel, OPAL_WRITE_OPPANEL);
222 OPAL_CALL(opal_pci_map_pe_dma_window, OPAL_PCI_MAP_PE_DMA_WINDOW);
223 OPAL_CALL(opal_pci_map_pe_dma_window_real, OPAL_PCI_MAP_PE_DMA_WINDOW_REAL);
224 OPAL_CALL(opal_pci_reset, OPAL_PCI_RESET);
225 OPAL_CALL(opal_pci_get_hub_diag_data, OPAL_PCI_GET_HUB_DIAG_DATA);
226 OPAL_CALL(opal_pci_get_phb_diag_data, OPAL_PCI_GET_PHB_DIAG_DATA);
227 OPAL_CALL(opal_pci_fence_phb, OPAL_PCI_FENCE_PHB);
228 OPAL_CALL(opal_pci_reinit, OPAL_PCI_REINIT);
229 OPAL_CALL(opal_pci_mask_pe_error, OPAL_PCI_MASK_PE_ERROR);
230 OPAL_CALL(opal_set_slot_led_status, OPAL_SET_SLOT_LED_STATUS);
231 OPAL_CALL(opal_get_epow_status, OPAL_GET_EPOW_STATUS);
232 OPAL_CALL(opal_get_dpo_status, OPAL_GET_DPO_STATUS);
233 OPAL_CALL(opal_set_system_attention_led, OPAL_SET_SYSTEM_ATTENTION_LED);
234 OPAL_CALL(opal_pci_next_error, OPAL_PCI_NEXT_ERROR);
235 OPAL_CALL(opal_pci_poll, OPAL_PCI_POLL);
236 OPAL_CALL(opal_pci_msi_eoi, OPAL_PCI_MSI_EOI);
237 OPAL_CALL(opal_pci_get_phb_diag_data2, OPAL_PCI_GET_PHB_DIAG_DATA2);
238 OPAL_CALL(opal_xscom_read, OPAL_XSCOM_READ);
239 OPAL_CALL(opal_xscom_write, OPAL_XSCOM_WRITE);
240 OPAL_CALL(opal_lpc_read, OPAL_LPC_READ);
241 OPAL_CALL(opal_lpc_write, OPAL_LPC_WRITE);
242 OPAL_CALL(opal_return_cpu, OPAL_RETURN_CPU);
243 OPAL_CALL(opal_reinit_cpus, OPAL_REINIT_CPUS);
244 OPAL_CALL(opal_read_elog, OPAL_ELOG_READ);
245 OPAL_CALL(opal_send_ack_elog, OPAL_ELOG_ACK);
246 OPAL_CALL(opal_get_elog_size, OPAL_ELOG_SIZE);
247 OPAL_CALL(opal_resend_pending_logs, OPAL_ELOG_RESEND);
248 OPAL_CALL(opal_write_elog, OPAL_ELOG_WRITE);
249 OPAL_CALL(opal_validate_flash, OPAL_FLASH_VALIDATE);
250 OPAL_CALL(opal_manage_flash, OPAL_FLASH_MANAGE);
251 OPAL_CALL(opal_update_flash, OPAL_FLASH_UPDATE);
252 OPAL_CALL(opal_resync_timebase, OPAL_RESYNC_TIMEBASE);
253 OPAL_CALL(opal_check_token, OPAL_CHECK_TOKEN);
254 OPAL_CALL(opal_dump_init, OPAL_DUMP_INIT);
255 OPAL_CALL(opal_dump_info, OPAL_DUMP_INFO);
256 OPAL_CALL(opal_dump_info2, OPAL_DUMP_INFO2);
257 OPAL_CALL(opal_dump_read, OPAL_DUMP_READ);
258 OPAL_CALL(opal_dump_ack, OPAL_DUMP_ACK);
259 OPAL_CALL(opal_get_msg, OPAL_GET_MSG);
260 OPAL_CALL(opal_write_oppanel_async, OPAL_WRITE_OPPANEL_ASYNC);
261 OPAL_CALL(opal_check_completion, OPAL_CHECK_ASYNC_COMPLETION);
262 OPAL_CALL(opal_dump_resend_notification, OPAL_DUMP_RESEND);
263 OPAL_CALL(opal_sync_host_reboot, OPAL_SYNC_HOST_REBOOT);
264 OPAL_CALL(opal_sensor_read, OPAL_SENSOR_READ);
265 OPAL_CALL(opal_get_param, OPAL_GET_PARAM);
266 OPAL_CALL(opal_set_param, OPAL_SET_PARAM);
267 OPAL_CALL(opal_handle_hmi, OPAL_HANDLE_HMI);
268 OPAL_CALL(opal_config_cpu_idle_state, OPAL_CONFIG_CPU_IDLE_STATE);
269 OPAL_CALL(opal_slw_set_reg, OPAL_SLW_SET_REG);
270 OPAL_CALL(opal_register_dump_region, OPAL_REGISTER_DUMP_REGION);
271 OPAL_CALL(opal_unregister_dump_region, OPAL_UNREGISTER_DUMP_REGION);
272 OPAL_CALL(opal_pci_set_phb_cxl_mode, OPAL_PCI_SET_PHB_CAPI_MODE);
273 OPAL_CALL(opal_tpo_write, OPAL_WRITE_TPO);
274 OPAL_CALL(opal_tpo_read, OPAL_READ_TPO);
275 OPAL_CALL(opal_ipmi_send, OPAL_IPMI_SEND);
276 OPAL_CALL(opal_ipmi_recv, OPAL_IPMI_RECV);
277 OPAL_CALL(opal_i2c_request, OPAL_I2C_REQUEST);
278 OPAL_CALL(opal_flash_read, OPAL_FLASH_READ);
279 OPAL_CALL(opal_flash_write, OPAL_FLASH_WRITE);
280 OPAL_CALL(opal_flash_erase, OPAL_FLASH_ERASE);
281 OPAL_CALL(opal_prd_msg, OPAL_PRD_MSG);
282 OPAL_CALL(opal_leds_get_ind, OPAL_LEDS_GET_INDICATOR);
283 OPAL_CALL(opal_leds_set_ind, OPAL_LEDS_SET_INDICATOR);
284 OPAL_CALL(opal_console_flush, OPAL_CONSOLE_FLUSH);
285 OPAL_CALL(opal_get_device_tree, OPAL_GET_DEVICE_TREE);
286 OPAL_CALL(opal_pci_get_presence_state, OPAL_PCI_GET_PRESENCE_STATE);
287 OPAL_CALL(opal_pci_get_power_state, OPAL_PCI_GET_POWER_STATE);
288 OPAL_CALL(opal_pci_set_power_state, OPAL_PCI_SET_POWER_STATE);
289 OPAL_CALL(opal_int_get_xirr, OPAL_INT_GET_XIRR);
290 OPAL_CALL(opal_int_set_cppr, OPAL_INT_SET_CPPR);
291 OPAL_CALL(opal_int_eoi, OPAL_INT_EOI);
292 OPAL_CALL(opal_int_set_mfrr, OPAL_INT_SET_MFRR);
293 OPAL_CALL(opal_pci_tce_kill, OPAL_PCI_TCE_KILL);
294 OPAL_CALL(opal_nmmu_set_ptcr, OPAL_NMMU_SET_PTCR);
295 OPAL_CALL(opal_xive_reset, OPAL_XIVE_RESET);
296 OPAL_CALL(opal_xive_get_irq_info, OPAL_XIVE_GET_IRQ_INFO);
297 OPAL_CALL(opal_xive_get_irq_config, OPAL_XIVE_GET_IRQ_CONFIG);
298 OPAL_CALL(opal_xive_set_irq_config, OPAL_XIVE_SET_IRQ_CONFIG);
299 OPAL_CALL(opal_xive_get_queue_info, OPAL_XIVE_GET_QUEUE_INFO);
300 OPAL_CALL(opal_xive_set_queue_info, OPAL_XIVE_SET_QUEUE_INFO);
301 OPAL_CALL(opal_xive_donate_page, OPAL_XIVE_DONATE_PAGE);
302 OPAL_CALL(opal_xive_alloc_vp_block, OPAL_XIVE_ALLOCATE_VP_BLOCK);
303 OPAL_CALL(opal_xive_free_vp_block, OPAL_XIVE_FREE_VP_BLOCK);
304 OPAL_CALL(opal_xive_allocate_irq, OPAL_XIVE_ALLOCATE_IRQ);
305 OPAL_CALL(opal_xive_free_irq, OPAL_XIVE_FREE_IRQ);
306 OPAL_CALL(opal_xive_get_vp_info, OPAL_XIVE_GET_VP_INFO);
307 OPAL_CALL(opal_xive_set_vp_info, OPAL_XIVE_SET_VP_INFO);
308 OPAL_CALL(opal_xive_sync, OPAL_XIVE_SYNC);
309 OPAL_CALL(opal_xive_dump, OPAL_XIVE_DUMP);
310 OPAL_CALL(opal_signal_system_reset, OPAL_SIGNAL_SYSTEM_RESET);
311 OPAL_CALL(opal_npu_init_context, OPAL_NPU_INIT_CONTEXT);
312 OPAL_CALL(opal_npu_destroy_context, OPAL_NPU_DESTROY_CONTEXT);
313 OPAL_CALL(opal_npu_map_lpar, OPAL_NPU_MAP_LPAR);
314 OPAL_CALL(opal_imc_counters_init, OPAL_IMC_COUNTERS_INIT);
315 OPAL_CALL(opal_imc_counters_start, OPAL_IMC_COUNTERS_START);
316 OPAL_CALL(opal_imc_counters_stop, OPAL_IMC_COUNTERS_STOP);
317 OPAL_CALL(opal_pci_set_p2p, OPAL_PCI_SET_P2P);
318 OPAL_CALL(opal_get_powercap, OPAL_GET_POWERCAP);
319 OPAL_CALL(opal_set_powercap, OPAL_SET_POWERCAP);
320 OPAL_CALL(opal_get_power_shift_ratio, OPAL_GET_POWER_SHIFT_RATIO);
321 OPAL_CALL(opal_set_power_shift_ratio, OPAL_SET_POWER_SHIFT_RATIO);
322 OPAL_CALL(opal_sensor_group_clear, OPAL_SENSOR_GROUP_CLEAR);
323 OPAL_CALL(opal_npu_spa_setup, OPAL_NPU_SPA_SETUP);
324 OPAL_CALL(opal_npu_spa_clear_cache, OPAL_NPU_SPA_CLEAR_CACHE);
325 OPAL_CALL(opal_npu_tl_set, OPAL_NPU_TL_SET);