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[mirror_ubuntu-bionic-kernel.git] / arch / powerpc / platforms / powernv / opal-wrappers.S
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14a43e69
BH		 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
58995a9a 12#include <linux/jump_label.h>
14a43e69
BH		 13#include <asm/ppc_asm.h>
14#include <asm/hvcall.h>
15#include <asm/asm-offsets.h>
16#include <asm/opal.h>
c49f6353
AB		 17
18 .section ".text"
19
20#ifdef CONFIG_TRACEPOINTS
1bc9e47a 21#ifdef HAVE_JUMP_LABEL
c49f6353
AB		 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); \
2a9c4f40
AK		 42 ld r11,opal_tracepoint_refcount@toc(r2); \
43 cmpdi r11,0; \
c49f6353
AB		 44 bne- LABEL; \
451:
46
47#endif
48
49#else
50#define OPAL_BRANCH(LABEL)
51#endif
14a43e69
BH		 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 */
c49f6353 58
14a43e69 59#define OPAL_CALL(name, token) \
19d36c21 60 _GLOBAL_TOC(name); \
ab9bad0e 61 mfmsr r12; \
14a43e69 62 mflr r0; \
ab9bad0e 63 andi. r11,r12,MSR_IR|MSR_DR; \
69c592ed 64 std r0,PPC_LR_STKOFF(r1); \
c49f6353 65 li r0,token; \
ab9bad0e 66 beq opal_real_call; \
c49f6353 67 OPAL_BRANCH(opal_tracepoint_entry) \
ab9bad0e
BH		 68 mfcr r11; \
69 stw r11,8(r1); \
c49f6353 70 li r11,0; \
c49f6353 71 ori r11,r11,MSR_EE; \
14a43e69 72 std r12,PACASAVEDMSR(r13); \
c49f6353 73 andc r12,r12,r11; \
14a43e69 74 mtmsrd r12,1; \
c49f6353
AB		 75 LOAD_REG_ADDR(r11,opal_return); \
76 mtlr r11; \
77 li r11,MSR_DR|MSR_IR|MSR_LE;\
78 andc r12,r12,r11; \
14a43e69
BH		 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
ad0289e4 86opal_return:
be401b37
BH		 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
14a43e69 94 ld r2,PACATOC(r13);
bbe30b3b 95 lwz r4,8(r1);
69c592ed 96 ld r5,PPC_LR_STKOFF(r1);
14a43e69
BH		 97 ld r6,PACASAVEDMSR(r13);
98 mtspr SPRN_SRR0,r5;
99 mtspr SPRN_SRR1,r6;
100 mtcr r4;
101 rfid
102
ab9bad0e
BH		 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
c49f6353
AB		 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)
c49f6353
AB		 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
a7e0fb6c 175 ld r3,STK_REG(R23)(r1)
c49f6353
AB		 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
69c592ed 184
e28b05e7 185OPAL_CALL(opal_invalid_call, OPAL_INVALID_CALL);
14a43e69
BH		 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);
e784b649 193OPAL_CALL(opal_cec_reboot2, OPAL_CEC_REBOOT2);
14a43e69
BH		 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);
5ca27efb 211OPAL_CALL(opal_pci_eeh_freeze_set, OPAL_PCI_EEH_FREEZE_SET);
5b642340 212OPAL_CALL(opal_pci_err_inject, OPAL_PCI_ERR_INJECT);
14a43e69
BH		 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);
f11fe552
BH		 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);
3b476aad 241OPAL_CALL(opal_get_dpo_status, OPAL_GET_DPO_STATUS);
f11fe552 242OPAL_CALL(opal_set_system_attention_led, OPAL_SET_SYSTEM_ATTENTION_LED);
23773230
GS		 243OPAL_CALL(opal_pci_next_error, OPAL_PCI_NEXT_ERROR);
244OPAL_CALL(opal_pci_poll, OPAL_PCI_POLL);
137436c9 245OPAL_CALL(opal_pci_msi_eoi, OPAL_PCI_MSI_EOI);
23773230 246OPAL_CALL(opal_pci_get_phb_diag_data2, OPAL_PCI_GET_PHB_DIAG_DATA2);
cc0efb57
BH		 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);
13906db6 251OPAL_CALL(opal_return_cpu, OPAL_RETURN_CPU);
4926616c 252OPAL_CALL(opal_reinit_cpus, OPAL_REINIT_CPUS);
774fea1a
SS		 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);
50bd6153
VH		 258OPAL_CALL(opal_validate_flash, OPAL_FLASH_VALIDATE);
259OPAL_CALL(opal_manage_flash, OPAL_FLASH_MANAGE);
260OPAL_CALL(opal_update_flash, OPAL_FLASH_UPDATE);
97eb001f 261OPAL_CALL(opal_resync_timebase, OPAL_RESYNC_TIMEBASE);
bffe6bda 262OPAL_CALL(opal_check_token, OPAL_CHECK_TOKEN);
c7e64b9c
SS		 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);
24366360 268OPAL_CALL(opal_get_msg, OPAL_GET_MSG);
43a1dd9b 269OPAL_CALL(opal_write_oppanel_async, OPAL_WRITE_OPPANEL_ASYNC);
24366360 270OPAL_CALL(opal_check_completion, OPAL_CHECK_ASYNC_COMPLETION);
c7e64b9c 271OPAL_CALL(opal_dump_resend_notification, OPAL_DUMP_RESEND);
f7d98d18 272OPAL_CALL(opal_sync_host_reboot, OPAL_SYNC_HOST_REBOOT);
7224adbb 273OPAL_CALL(opal_sensor_read, OPAL_SENSOR_READ);
4029cd66
NG		 274OPAL_CALL(opal_get_param, OPAL_GET_PARAM);
275OPAL_CALL(opal_set_param, OPAL_SET_PARAM);
0ef95b41 276OPAL_CALL(opal_handle_hmi, OPAL_HANDLE_HMI);
5703d2f4 277OPAL_CALL(opal_config_cpu_idle_state, OPAL_CONFIG_CPU_IDLE_STATE);
77b54e9f 278OPAL_CALL(opal_slw_set_reg, OPAL_SLW_SET_REG);
b09c2ec4
VH		 279OPAL_CALL(opal_register_dump_region, OPAL_REGISTER_DUMP_REGION);
280OPAL_CALL(opal_unregister_dump_region, OPAL_UNREGISTER_DUMP_REGION);
d7cf83fc 281OPAL_CALL(opal_pci_set_phb_cxl_mode, OPAL_PCI_SET_PHB_CAPI_MODE);
16b1d26e
NG		 282OPAL_CALL(opal_tpo_write, OPAL_WRITE_TPO);
283OPAL_CALL(opal_tpo_read, OPAL_READ_TPO);
608b286d
JK		 284OPAL_CALL(opal_ipmi_send, OPAL_IPMI_SEND);
285OPAL_CALL(opal_ipmi_recv, OPAL_IPMI_RECV);
47083450 286OPAL_CALL(opal_i2c_request, OPAL_I2C_REQUEST);
ed59190e
CB		 287OPAL_CALL(opal_flash_read, OPAL_FLASH_READ);
288OPAL_CALL(opal_flash_write, OPAL_FLASH_WRITE);
289OPAL_CALL(opal_flash_erase, OPAL_FLASH_ERASE);
0d7cd855 290OPAL_CALL(opal_prd_msg, OPAL_PRD_MSG);
8a8d9181
AK		 291OPAL_CALL(opal_leds_get_ind, OPAL_LEDS_GET_INDICATOR);
292OPAL_CALL(opal_leds_set_ind, OPAL_LEDS_SET_INDICATOR);
affddff6 293OPAL_CALL(opal_console_flush, OPAL_CONSOLE_FLUSH);
ea0d856c
GS		 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);
9fedd3f8
BH		 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);
69c592ed 302OPAL_CALL(opal_pci_tce_kill, OPAL_PCI_TCE_KILL);
1d0761d2 303OPAL_CALL(opal_nmmu_set_ptcr, OPAL_NMMU_SET_PTCR);
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