1
2#include <linux/percpu.h>
3#include <linux/jump_label.h>
4#include <asm/interrupt.h>
5#include <asm/opal-api.h>
6#include <asm/trace.h>
7#include <asm/asm-prototypes.h>
8
9#ifdef CONFIG_TRACEPOINTS
10
11
12
13
14static DEFINE_PER_CPU(unsigned int, opal_trace_depth);
15
16static void __trace_opal_entry(s64 a0, s64 a1, s64 a2, s64 a3,
17 s64 a4, s64 a5, s64 a6, s64 a7,
18 unsigned long opcode)
19{
20 unsigned int *depth;
21 unsigned long args[8];
22
23 depth = this_cpu_ptr(&opal_trace_depth);
24
25 if (*depth)
26 return;
27
28 args[0] = a0;
29 args[1] = a1;
30 args[2] = a2;
31 args[3] = a3;
32 args[4] = a4;
33 args[5] = a5;
34 args[6] = a6;
35 args[7] = a7;
36
37 (*depth)++;
38 trace_opal_entry(opcode, &args[0]);
39 (*depth)--;
40}
41
42static void __trace_opal_exit(unsigned long opcode, unsigned long retval)
43{
44 unsigned int *depth;
45
46 depth = this_cpu_ptr(&opal_trace_depth);
47
48 if (*depth)
49 return;
50
51 (*depth)++;
52 trace_opal_exit(opcode, retval);
53 (*depth)--;
54}
55
56static DEFINE_STATIC_KEY_FALSE(opal_tracepoint_key);
57
58int opal_tracepoint_regfunc(void)
59{
60 static_branch_inc(&opal_tracepoint_key);
61 return 0;
62}
63
64void opal_tracepoint_unregfunc(void)
65{
66 static_branch_dec(&opal_tracepoint_key);
67}
68
69static s64 __opal_call_trace(s64 a0, s64 a1, s64 a2, s64 a3,
70 s64 a4, s64 a5, s64 a6, s64 a7,
71 unsigned long opcode, unsigned long msr)
72{
73 s64 ret;
74
75 __trace_opal_entry(a0, a1, a2, a3, a4, a5, a6, a7, opcode);
76 ret = __opal_call(a0, a1, a2, a3, a4, a5, a6, a7, opcode, msr);
77 __trace_opal_exit(opcode, ret);
78
79 return ret;
80}
81
82#define DO_TRACE (static_branch_unlikely(&opal_tracepoint_key))
83
84#else
85
86static s64 __opal_call_trace(s64 a0, s64 a1, s64 a2, s64 a3,
87 s64 a4, s64 a5, s64 a6, s64 a7,
88 unsigned long opcode, unsigned long msr)
89{
90 return 0;
91}
92
93#define DO_TRACE false
94#endif
95
96static int64_t opal_call(int64_t a0, int64_t a1, int64_t a2, int64_t a3,
97 int64_t a4, int64_t a5, int64_t a6, int64_t a7, int64_t opcode)
98{
99 unsigned long flags;
100 unsigned long msr = mfmsr();
101 bool mmu = (msr & (MSR_IR|MSR_DR));
102 int64_t ret;
103
104
105 srr_regs_clobbered();
106
107 msr &= ~MSR_EE;
108
109 if (unlikely(!mmu))
110 return __opal_call(a0, a1, a2, a3, a4, a5, a6, a7, opcode, msr);
111
112 local_save_flags(flags);
113 hard_irq_disable();
114
115 if (DO_TRACE) {
116 ret = __opal_call_trace(a0, a1, a2, a3, a4, a5, a6, a7, opcode, msr);
117 } else {
118 ret = __opal_call(a0, a1, a2, a3, a4, a5, a6, a7, opcode, msr);
119 }
120
121 local_irq_restore(flags);
122
123 return ret;
124}
125
126#define OPAL_CALL(name, opcode) \
127int64_t name(int64_t a0, int64_t a1, int64_t a2, int64_t a3, \
128 int64_t a4, int64_t a5, int64_t a6, int64_t a7); \
129int64_t name(int64_t a0, int64_t a1, int64_t a2, int64_t a3, \
130 int64_t a4, int64_t a5, int64_t a6, int64_t a7) \
131{ \
132 return opal_call(a0, a1, a2, a3, a4, a5, a6, a7, opcode); \
133}
134
135OPAL_CALL(opal_invalid_call, OPAL_INVALID_CALL);
136OPAL_CALL(opal_console_write, OPAL_CONSOLE_WRITE);
137OPAL_CALL(opal_console_read, OPAL_CONSOLE_READ);
138OPAL_CALL(opal_console_write_buffer_space, OPAL_CONSOLE_WRITE_BUFFER_SPACE);
139OPAL_CALL(opal_rtc_read, OPAL_RTC_READ);
140OPAL_CALL(opal_rtc_write, OPAL_RTC_WRITE);
141OPAL_CALL(opal_cec_power_down, OPAL_CEC_POWER_DOWN);
142OPAL_CALL(opal_cec_reboot, OPAL_CEC_REBOOT);
143OPAL_CALL(opal_cec_reboot2, OPAL_CEC_REBOOT2);
144OPAL_CALL(opal_read_nvram, OPAL_READ_NVRAM);
145OPAL_CALL(opal_write_nvram, OPAL_WRITE_NVRAM);
146OPAL_CALL(opal_handle_interrupt, OPAL_HANDLE_INTERRUPT);
147OPAL_CALL(opal_poll_events, OPAL_POLL_EVENTS);
148OPAL_CALL(opal_pci_set_hub_tce_memory, OPAL_PCI_SET_HUB_TCE_MEMORY);
149OPAL_CALL(opal_pci_set_phb_tce_memory, OPAL_PCI_SET_PHB_TCE_MEMORY);
150OPAL_CALL(opal_pci_config_read_byte, OPAL_PCI_CONFIG_READ_BYTE);
151OPAL_CALL(opal_pci_config_read_half_word, OPAL_PCI_CONFIG_READ_HALF_WORD);
152OPAL_CALL(opal_pci_config_read_word, OPAL_PCI_CONFIG_READ_WORD);
153OPAL_CALL(opal_pci_config_write_byte, OPAL_PCI_CONFIG_WRITE_BYTE);
154OPAL_CALL(opal_pci_config_write_half_word, OPAL_PCI_CONFIG_WRITE_HALF_WORD);
155OPAL_CALL(opal_pci_config_write_word, OPAL_PCI_CONFIG_WRITE_WORD);
156OPAL_CALL(opal_set_xive, OPAL_SET_XIVE);
157OPAL_CALL(opal_get_xive, OPAL_GET_XIVE);
158OPAL_CALL(opal_register_exception_handler, OPAL_REGISTER_OPAL_EXCEPTION_HANDLER);
159OPAL_CALL(opal_pci_eeh_freeze_status, OPAL_PCI_EEH_FREEZE_STATUS);
160OPAL_CALL(opal_pci_eeh_freeze_clear, OPAL_PCI_EEH_FREEZE_CLEAR);
161OPAL_CALL(opal_pci_eeh_freeze_set, OPAL_PCI_EEH_FREEZE_SET);
162OPAL_CALL(opal_pci_err_inject, OPAL_PCI_ERR_INJECT);
163OPAL_CALL(opal_pci_shpc, OPAL_PCI_SHPC);
164OPAL_CALL(opal_pci_phb_mmio_enable, OPAL_PCI_PHB_MMIO_ENABLE);
165OPAL_CALL(opal_pci_set_phb_mem_window, OPAL_PCI_SET_PHB_MEM_WINDOW);
166OPAL_CALL(opal_pci_map_pe_mmio_window, OPAL_PCI_MAP_PE_MMIO_WINDOW);
167OPAL_CALL(opal_pci_set_phb_table_memory, OPAL_PCI_SET_PHB_TABLE_MEMORY);
168OPAL_CALL(opal_pci_set_pe, OPAL_PCI_SET_PE);
169OPAL_CALL(opal_pci_set_peltv, OPAL_PCI_SET_PELTV);
170OPAL_CALL(opal_pci_set_mve, OPAL_PCI_SET_MVE);
171OPAL_CALL(opal_pci_set_mve_enable, OPAL_PCI_SET_MVE_ENABLE);
172OPAL_CALL(opal_pci_get_xive_reissue, OPAL_PCI_GET_XIVE_REISSUE);
173OPAL_CALL(opal_pci_set_xive_reissue, OPAL_PCI_SET_XIVE_REISSUE);
174OPAL_CALL(opal_pci_set_xive_pe, OPAL_PCI_SET_XIVE_PE);
175OPAL_CALL(opal_get_xive_source, OPAL_GET_XIVE_SOURCE);
176OPAL_CALL(opal_get_msi_32, OPAL_GET_MSI_32);
177OPAL_CALL(opal_get_msi_64, OPAL_GET_MSI_64);
178OPAL_CALL(opal_start_cpu, OPAL_START_CPU);
179OPAL_CALL(opal_query_cpu_status, OPAL_QUERY_CPU_STATUS);
180OPAL_CALL(opal_write_oppanel, OPAL_WRITE_OPPANEL);
181OPAL_CALL(opal_pci_map_pe_dma_window, OPAL_PCI_MAP_PE_DMA_WINDOW);
182OPAL_CALL(opal_pci_map_pe_dma_window_real, OPAL_PCI_MAP_PE_DMA_WINDOW_REAL);
183OPAL_CALL(opal_pci_reset, OPAL_PCI_RESET);
184OPAL_CALL(opal_pci_get_hub_diag_data, OPAL_PCI_GET_HUB_DIAG_DATA);
185OPAL_CALL(opal_pci_get_phb_diag_data, OPAL_PCI_GET_PHB_DIAG_DATA);
186OPAL_CALL(opal_pci_fence_phb, OPAL_PCI_FENCE_PHB);
187OPAL_CALL(opal_pci_reinit, OPAL_PCI_REINIT);
188OPAL_CALL(opal_pci_mask_pe_error, OPAL_PCI_MASK_PE_ERROR);
189OPAL_CALL(opal_set_slot_led_status, OPAL_SET_SLOT_LED_STATUS);
190OPAL_CALL(opal_get_epow_status, OPAL_GET_EPOW_STATUS);
191OPAL_CALL(opal_get_dpo_status, OPAL_GET_DPO_STATUS);
192OPAL_CALL(opal_set_system_attention_led, OPAL_SET_SYSTEM_ATTENTION_LED);
193OPAL_CALL(opal_pci_next_error, OPAL_PCI_NEXT_ERROR);
194OPAL_CALL(opal_pci_poll, OPAL_PCI_POLL);
195OPAL_CALL(opal_pci_msi_eoi, OPAL_PCI_MSI_EOI);
196OPAL_CALL(opal_pci_get_phb_diag_data2, OPAL_PCI_GET_PHB_DIAG_DATA2);
197OPAL_CALL(opal_xscom_read, OPAL_XSCOM_READ);
198OPAL_CALL(opal_xscom_write, OPAL_XSCOM_WRITE);
199OPAL_CALL(opal_lpc_read, OPAL_LPC_READ);
200OPAL_CALL(opal_lpc_write, OPAL_LPC_WRITE);
201OPAL_CALL(opal_return_cpu, OPAL_RETURN_CPU);
202OPAL_CALL(opal_reinit_cpus, OPAL_REINIT_CPUS);
203OPAL_CALL(opal_read_elog, OPAL_ELOG_READ);
204OPAL_CALL(opal_send_ack_elog, OPAL_ELOG_ACK);
205OPAL_CALL(opal_get_elog_size, OPAL_ELOG_SIZE);
206OPAL_CALL(opal_resend_pending_logs, OPAL_ELOG_RESEND);
207OPAL_CALL(opal_write_elog, OPAL_ELOG_WRITE);
208OPAL_CALL(opal_validate_flash, OPAL_FLASH_VALIDATE);
209OPAL_CALL(opal_manage_flash, OPAL_FLASH_MANAGE);
210OPAL_CALL(opal_update_flash, OPAL_FLASH_UPDATE);
211OPAL_CALL(opal_resync_timebase, OPAL_RESYNC_TIMEBASE);
212OPAL_CALL(opal_check_token, OPAL_CHECK_TOKEN);
213OPAL_CALL(opal_dump_init, OPAL_DUMP_INIT);
214OPAL_CALL(opal_dump_info, OPAL_DUMP_INFO);
215OPAL_CALL(opal_dump_info2, OPAL_DUMP_INFO2);
216OPAL_CALL(opal_dump_read, OPAL_DUMP_READ);
217OPAL_CALL(opal_dump_ack, OPAL_DUMP_ACK);
218OPAL_CALL(opal_get_msg, OPAL_GET_MSG);
219OPAL_CALL(opal_write_oppanel_async, OPAL_WRITE_OPPANEL_ASYNC);
220OPAL_CALL(opal_check_completion, OPAL_CHECK_ASYNC_COMPLETION);
221OPAL_CALL(opal_dump_resend_notification, OPAL_DUMP_RESEND);
222OPAL_CALL(opal_sync_host_reboot, OPAL_SYNC_HOST_REBOOT);
223OPAL_CALL(opal_sensor_read, OPAL_SENSOR_READ);
224OPAL_CALL(opal_get_param, OPAL_GET_PARAM);
225OPAL_CALL(opal_set_param, OPAL_SET_PARAM);
226OPAL_CALL(opal_handle_hmi, OPAL_HANDLE_HMI);
227OPAL_CALL(opal_handle_hmi2, OPAL_HANDLE_HMI2);
228OPAL_CALL(opal_config_cpu_idle_state, OPAL_CONFIG_CPU_IDLE_STATE);
229OPAL_CALL(opal_slw_set_reg, OPAL_SLW_SET_REG);
230OPAL_CALL(opal_register_dump_region, OPAL_REGISTER_DUMP_REGION);
231OPAL_CALL(opal_unregister_dump_region, OPAL_UNREGISTER_DUMP_REGION);
232OPAL_CALL(opal_pci_set_phb_cxl_mode, OPAL_PCI_SET_PHB_CAPI_MODE);
233OPAL_CALL(opal_tpo_write, OPAL_WRITE_TPO);
234OPAL_CALL(opal_tpo_read, OPAL_READ_TPO);
235OPAL_CALL(opal_ipmi_send, OPAL_IPMI_SEND);
236OPAL_CALL(opal_ipmi_recv, OPAL_IPMI_RECV);
237OPAL_CALL(opal_i2c_request, OPAL_I2C_REQUEST);
238OPAL_CALL(opal_flash_read, OPAL_FLASH_READ);
239OPAL_CALL(opal_flash_write, OPAL_FLASH_WRITE);
240OPAL_CALL(opal_flash_erase, OPAL_FLASH_ERASE);
241OPAL_CALL(opal_prd_msg, OPAL_PRD_MSG);
242OPAL_CALL(opal_leds_get_ind, OPAL_LEDS_GET_INDICATOR);
243OPAL_CALL(opal_leds_set_ind, OPAL_LEDS_SET_INDICATOR);
244OPAL_CALL(opal_console_flush, OPAL_CONSOLE_FLUSH);
245OPAL_CALL(opal_get_device_tree, OPAL_GET_DEVICE_TREE);
246OPAL_CALL(opal_pci_get_presence_state, OPAL_PCI_GET_PRESENCE_STATE);
247OPAL_CALL(opal_pci_get_power_state, OPAL_PCI_GET_POWER_STATE);
248OPAL_CALL(opal_pci_set_power_state, OPAL_PCI_SET_POWER_STATE);
249OPAL_CALL(opal_int_get_xirr, OPAL_INT_GET_XIRR);
250OPAL_CALL(opal_int_set_cppr, OPAL_INT_SET_CPPR);
251OPAL_CALL(opal_int_eoi, OPAL_INT_EOI);
252OPAL_CALL(opal_int_set_mfrr, OPAL_INT_SET_MFRR);
253OPAL_CALL(opal_pci_tce_kill, OPAL_PCI_TCE_KILL);
254OPAL_CALL(opal_nmmu_set_ptcr, OPAL_NMMU_SET_PTCR);
255OPAL_CALL(opal_xive_reset, OPAL_XIVE_RESET);
256OPAL_CALL(opal_xive_get_irq_info, OPAL_XIVE_GET_IRQ_INFO);
257OPAL_CALL(opal_xive_get_irq_config, OPAL_XIVE_GET_IRQ_CONFIG);
258OPAL_CALL(opal_xive_set_irq_config, OPAL_XIVE_SET_IRQ_CONFIG);
259OPAL_CALL(opal_xive_get_queue_info, OPAL_XIVE_GET_QUEUE_INFO);
260OPAL_CALL(opal_xive_set_queue_info, OPAL_XIVE_SET_QUEUE_INFO);
261OPAL_CALL(opal_xive_donate_page, OPAL_XIVE_DONATE_PAGE);
262OPAL_CALL(opal_xive_alloc_vp_block, OPAL_XIVE_ALLOCATE_VP_BLOCK);
263OPAL_CALL(opal_xive_free_vp_block, OPAL_XIVE_FREE_VP_BLOCK);
264OPAL_CALL(opal_xive_allocate_irq_raw, OPAL_XIVE_ALLOCATE_IRQ);
265OPAL_CALL(opal_xive_free_irq, OPAL_XIVE_FREE_IRQ);
266OPAL_CALL(opal_xive_get_vp_info, OPAL_XIVE_GET_VP_INFO);
267OPAL_CALL(opal_xive_set_vp_info, OPAL_XIVE_SET_VP_INFO);
268OPAL_CALL(opal_xive_sync, OPAL_XIVE_SYNC);
269OPAL_CALL(opal_xive_dump, OPAL_XIVE_DUMP);
270OPAL_CALL(opal_xive_get_queue_state, OPAL_XIVE_GET_QUEUE_STATE);
271OPAL_CALL(opal_xive_set_queue_state, OPAL_XIVE_SET_QUEUE_STATE);
272OPAL_CALL(opal_xive_get_vp_state, OPAL_XIVE_GET_VP_STATE);
273OPAL_CALL(opal_signal_system_reset, OPAL_SIGNAL_SYSTEM_RESET);
274OPAL_CALL(opal_npu_map_lpar, OPAL_NPU_MAP_LPAR);
275OPAL_CALL(opal_imc_counters_init, OPAL_IMC_COUNTERS_INIT);
276OPAL_CALL(opal_imc_counters_start, OPAL_IMC_COUNTERS_START);
277OPAL_CALL(opal_imc_counters_stop, OPAL_IMC_COUNTERS_STOP);
278OPAL_CALL(opal_get_powercap, OPAL_GET_POWERCAP);
279OPAL_CALL(opal_set_powercap, OPAL_SET_POWERCAP);
280OPAL_CALL(opal_get_power_shift_ratio, OPAL_GET_POWER_SHIFT_RATIO);
281OPAL_CALL(opal_set_power_shift_ratio, OPAL_SET_POWER_SHIFT_RATIO);
282OPAL_CALL(opal_sensor_group_clear, OPAL_SENSOR_GROUP_CLEAR);
283OPAL_CALL(opal_quiesce, OPAL_QUIESCE);
284OPAL_CALL(opal_npu_spa_setup, OPAL_NPU_SPA_SETUP);
285OPAL_CALL(opal_npu_spa_clear_cache, OPAL_NPU_SPA_CLEAR_CACHE);
286OPAL_CALL(opal_npu_tl_set, OPAL_NPU_TL_SET);
287OPAL_CALL(opal_pci_get_pbcq_tunnel_bar, OPAL_PCI_GET_PBCQ_TUNNEL_BAR);
288OPAL_CALL(opal_pci_set_pbcq_tunnel_bar, OPAL_PCI_SET_PBCQ_TUNNEL_BAR);
289OPAL_CALL(opal_sensor_read_u64, OPAL_SENSOR_READ_U64);
290OPAL_CALL(opal_sensor_group_enable, OPAL_SENSOR_GROUP_ENABLE);
291OPAL_CALL(opal_nx_coproc_init, OPAL_NX_COPROC_INIT);
292OPAL_CALL(opal_mpipl_update, OPAL_MPIPL_UPDATE);
293OPAL_CALL(opal_mpipl_register_tag, OPAL_MPIPL_REGISTER_TAG);
294OPAL_CALL(opal_mpipl_query_tag, OPAL_MPIPL_QUERY_TAG);
295OPAL_CALL(opal_secvar_get, OPAL_SECVAR_GET);
296OPAL_CALL(opal_secvar_get_next, OPAL_SECVAR_GET_NEXT);
297OPAL_CALL(opal_secvar_enqueue_update, OPAL_SECVAR_ENQUEUE_UPDATE);
298
