| blob | cf928bba4d9a3622cea133349e71fe221dce8f93 |
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 .llong 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 r12,opal_tracepoint_refcount@toc(r2); \
43 cmpdi r12,0; \
44 bne- LABEL; \
45 1:
47 #endif
49 #else
50 #define OPAL_BRANCH(LABEL)
51 #endif
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 */
59 #define OPAL_CALL(name, token) \
60 _GLOBAL_TOC(name); \
61 mflr r0; \
62 std r0,PPC_LR_STKOFF(r1); \
63 li r0,token; \
64 OPAL_BRANCH(opal_tracepoint_entry) \
65 mfcr r12; \
66 stw r12,8(r1); \
67 std r1,PACAR1(r13); \
68 li r11,0; \
69 mfmsr r12; \
70 ori r11,r11,MSR_EE; \
71 std r12,PACASAVEDMSR(r13); \
72 andc r12,r12,r11; \
73 mtmsrd r12,1; \
74 LOAD_REG_ADDR(r11,opal_return); \
75 mtlr r11; \
76 li r11,MSR_DR|MSR_IR|MSR_LE;\
77 andc r12,r12,r11; \
78 mtspr SPRN_HSRR1,r12; \
79 LOAD_REG_ADDR(r11,opal); \
80 ld r12,8(r11); \
81 ld r2,0(r11); \
82 mtspr SPRN_HSRR0,r12; \
83 hrfid
85 opal_return:
86 /*
87 * Fixup endian on OPAL return... we should be able to simplify
88 * this by instead converting the below trampoline to a set of
89 * bytes (always BE) since MSR:LE will end up fixed up as a side
90 * effect of the rfid.
91 */
92 FIXUP_ENDIAN
93 ld r2,PACATOC(r13);
94 lwz r4,8(r1);
95 ld r5,PPC_LR_STKOFF(r1);
96 ld r6,PACASAVEDMSR(r13);
97 mtspr SPRN_SRR0,r5;
98 mtspr SPRN_SRR1,r6;
99 mtcr r4;
100 rfid
102 #ifdef CONFIG_TRACEPOINTS
103 opal_tracepoint_entry:
104 stdu r1,-STACKFRAMESIZE(r1)
105 std r0,STK_REG(R23)(r1)
106 std r3,STK_REG(R24)(r1)
107 std r4,STK_REG(R25)(r1)
108 std r5,STK_REG(R26)(r1)
109 std r6,STK_REG(R27)(r1)
110 std r7,STK_REG(R28)(r1)
111 std r8,STK_REG(R29)(r1)
112 std r9,STK_REG(R30)(r1)
113 std r10,STK_REG(R31)(r1)
114 mr r3,r0
115 addi r4,r1,STK_REG(R24)
116 bl __trace_opal_entry
117 ld r0,STK_REG(R23)(r1)
118 ld r3,STK_REG(R24)(r1)
119 ld r4,STK_REG(R25)(r1)
120 ld r5,STK_REG(R26)(r1)
121 ld r6,STK_REG(R27)(r1)
122 ld r7,STK_REG(R28)(r1)
123 ld r8,STK_REG(R29)(r1)
124 ld r9,STK_REG(R30)(r1)
125 ld r10,STK_REG(R31)(r1)
126 LOAD_REG_ADDR(r11,opal_tracepoint_return)
127 mfcr r12
128 std r11,16(r1)
129 stw r12,8(r1)
130 std r1,PACAR1(r13)
131 li r11,0
132 mfmsr r12
133 ori r11,r11,MSR_EE
134 std r12,PACASAVEDMSR(r13)
135 andc r12,r12,r11
136 mtmsrd r12,1
137 LOAD_REG_ADDR(r11,opal_return)
138 mtlr r11
139 li r11,MSR_DR|MSR_IR|MSR_LE
140 andc r12,r12,r11
141 mtspr SPRN_HSRR1,r12
142 LOAD_REG_ADDR(r11,opal)
143 ld r12,8(r11)
144 ld r2,0(r11)
145 mtspr SPRN_HSRR0,r12
146 hrfid
148 opal_tracepoint_return:
149 std r3,STK_REG(R31)(r1)
150 mr r4,r3
151 ld r0,STK_REG(R23)(r1)
152 bl __trace_opal_exit
153 ld r3,STK_REG(R31)(r1)
154 addi r1,r1,STACKFRAMESIZE
155 ld r0,16(r1)
156 mtlr r0
157 blr
158 #endif
160 #define OPAL_CALL_REAL(name, token) \
161 _GLOBAL_TOC(name); \
162 mflr r0; \
163 std r0,PPC_LR_STKOFF(r1); \
164 li r0,token; \
165 mfcr r12; \
166 stw r12,8(r1); \
167 \
168 /* Set opal return address */ \
169 LOAD_REG_ADDR(r11, opal_return_realmode); \
170 mtlr r11; \
171 mfmsr r12; \
172 li r11,MSR_LE; \
173 andc r12,r12,r11; \
174 mtspr SPRN_HSRR1,r12; \
175 LOAD_REG_ADDR(r11,opal); \
176 ld r12,8(r11); \
177 ld r2,0(r11); \
178 mtspr SPRN_HSRR0,r12; \
179 hrfid
181 opal_return_realmode:
182 FIXUP_ENDIAN
183 ld r2,PACATOC(r13);
184 lwz r11,8(r1);
185 ld r12,PPC_LR_STKOFF(r1)
186 mtcr r11;
187 mtlr r12
188 blr
191 OPAL_CALL(opal_invalid_call, OPAL_INVALID_CALL);
192 OPAL_CALL(opal_console_write, OPAL_CONSOLE_WRITE);
193 OPAL_CALL(opal_console_read, OPAL_CONSOLE_READ);
194 OPAL_CALL(opal_console_write_buffer_space, OPAL_CONSOLE_WRITE_BUFFER_SPACE);
195 OPAL_CALL(opal_rtc_read, OPAL_RTC_READ);
196 OPAL_CALL(opal_rtc_write, OPAL_RTC_WRITE);
197 OPAL_CALL(opal_cec_power_down, OPAL_CEC_POWER_DOWN);
198 OPAL_CALL(opal_cec_reboot, OPAL_CEC_REBOOT);
199 OPAL_CALL(opal_cec_reboot2, OPAL_CEC_REBOOT2);
200 OPAL_CALL(opal_read_nvram, OPAL_READ_NVRAM);
201 OPAL_CALL(opal_write_nvram, OPAL_WRITE_NVRAM);
202 OPAL_CALL(opal_handle_interrupt, OPAL_HANDLE_INTERRUPT);
203 OPAL_CALL(opal_poll_events, OPAL_POLL_EVENTS);
204 OPAL_CALL(opal_pci_set_hub_tce_memory, OPAL_PCI_SET_HUB_TCE_MEMORY);
205 OPAL_CALL(opal_pci_set_phb_tce_memory, OPAL_PCI_SET_PHB_TCE_MEMORY);
206 OPAL_CALL(opal_pci_config_read_byte, OPAL_PCI_CONFIG_READ_BYTE);
207 OPAL_CALL(opal_pci_config_read_half_word, OPAL_PCI_CONFIG_READ_HALF_WORD);
208 OPAL_CALL(opal_pci_config_read_word, OPAL_PCI_CONFIG_READ_WORD);
209 OPAL_CALL(opal_pci_config_write_byte, OPAL_PCI_CONFIG_WRITE_BYTE);
210 OPAL_CALL(opal_pci_config_write_half_word, OPAL_PCI_CONFIG_WRITE_HALF_WORD);
211 OPAL_CALL(opal_pci_config_write_word, OPAL_PCI_CONFIG_WRITE_WORD);
212 OPAL_CALL(opal_set_xive, OPAL_SET_XIVE);
213 OPAL_CALL(opal_get_xive, OPAL_GET_XIVE);
214 OPAL_CALL(opal_register_exception_handler, OPAL_REGISTER_OPAL_EXCEPTION_HANDLER);
215 OPAL_CALL(opal_pci_eeh_freeze_status, OPAL_PCI_EEH_FREEZE_STATUS);
216 OPAL_CALL(opal_pci_eeh_freeze_clear, OPAL_PCI_EEH_FREEZE_CLEAR);
217 OPAL_CALL(opal_pci_eeh_freeze_set, OPAL_PCI_EEH_FREEZE_SET);
218 OPAL_CALL(opal_pci_err_inject, OPAL_PCI_ERR_INJECT);
219 OPAL_CALL(opal_pci_shpc, OPAL_PCI_SHPC);
220 OPAL_CALL(opal_pci_phb_mmio_enable, OPAL_PCI_PHB_MMIO_ENABLE);
221 OPAL_CALL(opal_pci_set_phb_mem_window, OPAL_PCI_SET_PHB_MEM_WINDOW);
222 OPAL_CALL(opal_pci_map_pe_mmio_window, OPAL_PCI_MAP_PE_MMIO_WINDOW);
223 OPAL_CALL(opal_pci_set_phb_table_memory, OPAL_PCI_SET_PHB_TABLE_MEMORY);
224 OPAL_CALL(opal_pci_set_pe, OPAL_PCI_SET_PE);
225 OPAL_CALL(opal_pci_set_peltv, OPAL_PCI_SET_PELTV);
226 OPAL_CALL(opal_pci_set_mve, OPAL_PCI_SET_MVE);
227 OPAL_CALL(opal_pci_set_mve_enable, OPAL_PCI_SET_MVE_ENABLE);
228 OPAL_CALL(opal_pci_get_xive_reissue, OPAL_PCI_GET_XIVE_REISSUE);
229 OPAL_CALL(opal_pci_set_xive_reissue, OPAL_PCI_SET_XIVE_REISSUE);
230 OPAL_CALL(opal_pci_set_xive_pe, OPAL_PCI_SET_XIVE_PE);
231 OPAL_CALL(opal_get_xive_source, OPAL_GET_XIVE_SOURCE);
232 OPAL_CALL(opal_get_msi_32, OPAL_GET_MSI_32);
233 OPAL_CALL(opal_get_msi_64, OPAL_GET_MSI_64);
234 OPAL_CALL(opal_start_cpu, OPAL_START_CPU);
235 OPAL_CALL(opal_query_cpu_status, OPAL_QUERY_CPU_STATUS);
236 OPAL_CALL(opal_write_oppanel, OPAL_WRITE_OPPANEL);
237 OPAL_CALL(opal_pci_map_pe_dma_window, OPAL_PCI_MAP_PE_DMA_WINDOW);
238 OPAL_CALL(opal_pci_map_pe_dma_window_real, OPAL_PCI_MAP_PE_DMA_WINDOW_REAL);
239 OPAL_CALL(opal_pci_reset, OPAL_PCI_RESET);
240 OPAL_CALL(opal_pci_get_hub_diag_data, OPAL_PCI_GET_HUB_DIAG_DATA);
241 OPAL_CALL(opal_pci_get_phb_diag_data, OPAL_PCI_GET_PHB_DIAG_DATA);
242 OPAL_CALL(opal_pci_fence_phb, OPAL_PCI_FENCE_PHB);
243 OPAL_CALL(opal_pci_reinit, OPAL_PCI_REINIT);
244 OPAL_CALL(opal_pci_mask_pe_error, OPAL_PCI_MASK_PE_ERROR);
245 OPAL_CALL(opal_set_slot_led_status, OPAL_SET_SLOT_LED_STATUS);
246 OPAL_CALL(opal_get_epow_status, OPAL_GET_EPOW_STATUS);
247 OPAL_CALL(opal_get_dpo_status, OPAL_GET_DPO_STATUS);
248 OPAL_CALL(opal_set_system_attention_led, OPAL_SET_SYSTEM_ATTENTION_LED);
249 OPAL_CALL(opal_pci_next_error, OPAL_PCI_NEXT_ERROR);
250 OPAL_CALL(opal_pci_poll, OPAL_PCI_POLL);
251 OPAL_CALL(opal_pci_msi_eoi, OPAL_PCI_MSI_EOI);
252 OPAL_CALL(opal_pci_get_phb_diag_data2, OPAL_PCI_GET_PHB_DIAG_DATA2);
253 OPAL_CALL(opal_xscom_read, OPAL_XSCOM_READ);
254 OPAL_CALL(opal_xscom_write, OPAL_XSCOM_WRITE);
255 OPAL_CALL(opal_lpc_read, OPAL_LPC_READ);
256 OPAL_CALL(opal_lpc_write, OPAL_LPC_WRITE);
257 OPAL_CALL(opal_return_cpu, OPAL_RETURN_CPU);
258 OPAL_CALL(opal_reinit_cpus, OPAL_REINIT_CPUS);
259 OPAL_CALL(opal_read_elog, OPAL_ELOG_READ);
260 OPAL_CALL(opal_send_ack_elog, OPAL_ELOG_ACK);
261 OPAL_CALL(opal_get_elog_size, OPAL_ELOG_SIZE);
262 OPAL_CALL(opal_resend_pending_logs, OPAL_ELOG_RESEND);
263 OPAL_CALL(opal_write_elog, OPAL_ELOG_WRITE);
264 OPAL_CALL(opal_validate_flash, OPAL_FLASH_VALIDATE);
265 OPAL_CALL(opal_manage_flash, OPAL_FLASH_MANAGE);
266 OPAL_CALL(opal_update_flash, OPAL_FLASH_UPDATE);
267 OPAL_CALL(opal_resync_timebase, OPAL_RESYNC_TIMEBASE);
268 OPAL_CALL_REAL(opal_rm_resync_timebase, OPAL_RESYNC_TIMEBASE);
269 OPAL_CALL(opal_check_token, OPAL_CHECK_TOKEN);
270 OPAL_CALL(opal_dump_init, OPAL_DUMP_INIT);
271 OPAL_CALL(opal_dump_info, OPAL_DUMP_INFO);
272 OPAL_CALL(opal_dump_info2, OPAL_DUMP_INFO2);
273 OPAL_CALL(opal_dump_read, OPAL_DUMP_READ);
274 OPAL_CALL(opal_dump_ack, OPAL_DUMP_ACK);
275 OPAL_CALL(opal_get_msg, OPAL_GET_MSG);
276 OPAL_CALL(opal_write_oppanel_async, OPAL_WRITE_OPPANEL_ASYNC);
277 OPAL_CALL(opal_check_completion, OPAL_CHECK_ASYNC_COMPLETION);
278 OPAL_CALL(opal_dump_resend_notification, OPAL_DUMP_RESEND);
279 OPAL_CALL(opal_sync_host_reboot, OPAL_SYNC_HOST_REBOOT);
280 OPAL_CALL(opal_sensor_read, OPAL_SENSOR_READ);
281 OPAL_CALL(opal_get_param, OPAL_GET_PARAM);
282 OPAL_CALL(opal_set_param, OPAL_SET_PARAM);
283 OPAL_CALL(opal_handle_hmi, OPAL_HANDLE_HMI);
284 OPAL_CALL_REAL(opal_rm_handle_hmi, OPAL_HANDLE_HMI);
285 OPAL_CALL(opal_config_cpu_idle_state, OPAL_CONFIG_CPU_IDLE_STATE);
286 OPAL_CALL_REAL(opal_rm_config_cpu_idle_state, OPAL_CONFIG_CPU_IDLE_STATE);
287 OPAL_CALL(opal_slw_set_reg, OPAL_SLW_SET_REG);
288 OPAL_CALL(opal_register_dump_region, OPAL_REGISTER_DUMP_REGION);
289 OPAL_CALL(opal_unregister_dump_region, OPAL_UNREGISTER_DUMP_REGION);
290 OPAL_CALL(opal_pci_set_phb_cxl_mode, OPAL_PCI_SET_PHB_CAPI_MODE);
291 OPAL_CALL(opal_tpo_write, OPAL_WRITE_TPO);
292 OPAL_CALL(opal_tpo_read, OPAL_READ_TPO);
293 OPAL_CALL(opal_ipmi_send, OPAL_IPMI_SEND);
294 OPAL_CALL(opal_ipmi_recv, OPAL_IPMI_RECV);
295 OPAL_CALL(opal_i2c_request, OPAL_I2C_REQUEST);
296 OPAL_CALL(opal_flash_read, OPAL_FLASH_READ);
297 OPAL_CALL(opal_flash_write, OPAL_FLASH_WRITE);
298 OPAL_CALL(opal_flash_erase, OPAL_FLASH_ERASE);
299 OPAL_CALL(opal_prd_msg, OPAL_PRD_MSG);
300 OPAL_CALL(opal_leds_get_ind, OPAL_LEDS_GET_INDICATOR);
301 OPAL_CALL(opal_leds_set_ind, OPAL_LEDS_SET_INDICATOR);
302 OPAL_CALL(opal_console_flush, OPAL_CONSOLE_FLUSH);
303 OPAL_CALL(opal_get_device_tree, OPAL_GET_DEVICE_TREE);
304 OPAL_CALL(opal_pci_get_presence_state, OPAL_PCI_GET_PRESENCE_STATE);
305 OPAL_CALL(opal_pci_get_power_state, OPAL_PCI_GET_POWER_STATE);
306 OPAL_CALL(opal_pci_set_power_state, OPAL_PCI_SET_POWER_STATE);
307 OPAL_CALL(opal_int_get_xirr, OPAL_INT_GET_XIRR);
308 OPAL_CALL(opal_int_set_cppr, OPAL_INT_SET_CPPR);
309 OPAL_CALL(opal_int_eoi, OPAL_INT_EOI);
310 OPAL_CALL(opal_int_set_mfrr, OPAL_INT_SET_MFRR);
311 OPAL_CALL(opal_pci_tce_kill, OPAL_PCI_TCE_KILL);
312 OPAL_CALL_REAL(opal_rm_pci_tce_kill, OPAL_PCI_TCE_KILL);