extern long opal_do_takeover(struct opal_takeover_args *args);
+struct rtas_args;
extern int opal_enter_rtas(struct rtas_args *args,
unsigned long data,
unsigned long entry);
-
#endif /* __ASSEMBLY__ */
/****** OPAL APIs ******/
+/* Return codes */
+#define OPAL_SUCCESS 0
+#define OPAL_PARAMETER -1
+#define OPAL_BUSY -2
+#define OPAL_PARTIAL -3
+#define OPAL_CONSTRAINED -4
+#define OPAL_CLOSED -5
+#define OPAL_HARDWARE -6
+#define OPAL_UNSUPPORTED -7
+#define OPAL_PERMISSION -8
+#define OPAL_NO_MEM -9
+#define OPAL_RESOURCE -10
+#define OPAL_INTERNAL_ERROR -11
+#define OPAL_BUSY_EVENT -12
+#define OPAL_HARDWARE_FROZEN -13
+
+/* API Tokens (in r0) */
+#define OPAL_CONSOLE_WRITE 1
+#define OPAL_CONSOLE_READ 2
+#define OPAL_RTC_READ 3
+#define OPAL_RTC_WRITE 4
+#define OPAL_CEC_POWER_DOWN 5
+#define OPAL_CEC_REBOOT 6
+#define OPAL_READ_NVRAM 7
+#define OPAL_WRITE_NVRAM 8
+#define OPAL_HANDLE_INTERRUPT 9
+#define OPAL_POLL_EVENTS 10
+#define OPAL_PCI_SET_HUB_TCE_MEMORY 11
+#define OPAL_PCI_SET_PHB_TCE_MEMORY 12
+#define OPAL_PCI_CONFIG_READ_BYTE 13
+#define OPAL_PCI_CONFIG_READ_HALF_WORD 14
+#define OPAL_PCI_CONFIG_READ_WORD 15
+#define OPAL_PCI_CONFIG_WRITE_BYTE 16
+#define OPAL_PCI_CONFIG_WRITE_HALF_WORD 17
+#define OPAL_PCI_CONFIG_WRITE_WORD 18
+#define OPAL_SET_XIVE 19
+#define OPAL_GET_XIVE 20
+#define OPAL_GET_COMPLETION_TOKEN_STATUS 21 /* obsolete */
+#define OPAL_REGISTER_OPAL_EXCEPTION_HANDLER 22
+#define OPAL_PCI_EEH_FREEZE_STATUS 23
+#define OPAL_PCI_SHPC 24
+#define OPAL_CONSOLE_WRITE_BUFFER_SPACE 25
+#define OPAL_PCI_EEH_FREEZE_CLEAR 26
+#define OPAL_PCI_PHB_MMIO_ENABLE 27
+#define OPAL_PCI_SET_PHB_MEM_WINDOW 28
+#define OPAL_PCI_MAP_PE_MMIO_WINDOW 29
+#define OPAL_PCI_SET_PHB_TABLE_MEMORY 30
+#define OPAL_PCI_SET_PE 31
+#define OPAL_PCI_SET_PELTV 32
+#define OPAL_PCI_SET_MVE 33
+#define OPAL_PCI_SET_MVE_ENABLE 34
+#define OPAL_PCI_GET_XIVE_REISSUE 35
+#define OPAL_PCI_SET_XIVE_REISSUE 36
+#define OPAL_PCI_SET_XIVE_PE 37
+#define OPAL_GET_XIVE_SOURCE 38
+#define OPAL_GET_MSI_32 39
+#define OPAL_GET_MSI_64 40
+#define OPAL_START_CPU 41
+#define OPAL_QUERY_CPU_STATUS 42
+#define OPAL_WRITE_OPPANEL 43
+#define OPAL_PCI_MAP_PE_DMA_WINDOW 44
+#define OPAL_PCI_MAP_PE_DMA_WINDOW_REAL 45
+#define OPAL_PCI_RESET 49
+
+#ifndef __ASSEMBLY__
+
+/* Other enums */
+enum OpalVendorApiTokens {
+ OPAL_START_VENDOR_API_RANGE = 1000, OPAL_END_VENDOR_API_RANGE = 1999
+};
+enum OpalFreezeState {
+ OPAL_EEH_STOPPED_NOT_FROZEN = 0,
+ OPAL_EEH_STOPPED_MMIO_FREEZE = 1,
+ OPAL_EEH_STOPPED_DMA_FREEZE = 2,
+ OPAL_EEH_STOPPED_MMIO_DMA_FREEZE = 3,
+ OPAL_EEH_STOPPED_RESET = 4,
+ OPAL_EEH_STOPPED_TEMP_UNAVAIL = 5,
+ OPAL_EEH_STOPPED_PERM_UNAVAIL = 6
+};
+enum OpalEehFreezeActionToken {
+ OPAL_EEH_ACTION_CLEAR_FREEZE_MMIO = 1,
+ OPAL_EEH_ACTION_CLEAR_FREEZE_DMA = 2,
+ OPAL_EEH_ACTION_CLEAR_FREEZE_ALL = 3
+};
+enum OpalPciStatusToken {
+ OPAL_EEH_PHB_NO_ERROR = 0,
+ OPAL_EEH_PHB_FATAL = 1,
+ OPAL_EEH_PHB_RECOVERABLE = 2,
+ OPAL_EEH_PHB_BUS_ERROR = 3,
+ OPAL_EEH_PCI_NO_DEVSEL = 4,
+ OPAL_EEH_PCI_TA = 5,
+ OPAL_EEH_PCIEX_UR = 6,
+ OPAL_EEH_PCIEX_CA = 7,
+ OPAL_EEH_PCI_MMIO_ERROR = 8,
+ OPAL_EEH_PCI_DMA_ERROR = 9
+};
+enum OpalShpcAction {
+ OPAL_SHPC_GET_LINK_STATE = 0,
+ OPAL_SHPC_GET_SLOT_STATE = 1
+};
+enum OpalShpcLinkState {
+ OPAL_SHPC_LINK_DOWN = 0,
+ OPAL_SHPC_LINK_UP = 1
+};
+enum OpalMmioWindowType {
+ OPAL_M32_WINDOW_TYPE = 1,
+ OPAL_M64_WINDOW_TYPE = 2,
+ OPAL_IO_WINDOW_TYPE = 3
+};
+enum OpalShpcSlotState {
+ OPAL_SHPC_DEV_NOT_PRESENT = 0,
+ OPAL_SHPC_DEV_PRESENT = 1
+};
+enum OpalExceptionHandler {
+ OPAL_MACHINE_CHECK_HANDLER = 1,
+ OPAL_HYPERVISOR_MAINTENANCE_HANDLER = 2,
+ OPAL_SOFTPATCH_HANDLER = 3
+};
+enum OpalPendingState {
+ OPAL_EVENT_OPAL_INTERNAL = 0x1,
+ OPAL_EVENT_NVRAM = 0x2,
+ OPAL_EVENT_RTC = 0x4,
+ OPAL_EVENT_CONSOLE_OUTPUT = 0x8,
+ OPAL_EVENT_CONSOLE_INPUT = 0x10
+};
+
+/* Machine check related definitions */
+enum OpalMCE_Version {
+ OpalMCE_V1 = 1,
+};
+
+enum OpalMCE_Severity {
+ OpalMCE_SEV_NO_ERROR = 0,
+ OpalMCE_SEV_WARNING = 1,
+ OpalMCE_SEV_ERROR_SYNC = 2,
+ OpalMCE_SEV_FATAL = 3,
+};
+
+enum OpalMCE_Disposition {
+ OpalMCE_DISPOSITION_RECOVERED = 0,
+ OpalMCE_DISPOSITION_NOT_RECOVERED = 1,
+};
+
+enum OpalMCE_Initiator {
+ OpalMCE_INITIATOR_UNKNOWN = 0,
+ OpalMCE_INITIATOR_CPU = 1,
+};
+
+enum OpalMCE_ErrorType {
+ OpalMCE_ERROR_TYPE_UNKNOWN = 0,
+ OpalMCE_ERROR_TYPE_UE = 1,
+ OpalMCE_ERROR_TYPE_SLB = 2,
+ OpalMCE_ERROR_TYPE_ERAT = 3,
+ OpalMCE_ERROR_TYPE_TLB = 4,
+};
+
+enum OpalMCE_UeErrorType {
+ OpalMCE_UE_ERROR_INDETERMINATE = 0,
+ OpalMCE_UE_ERROR_IFETCH = 1,
+ OpalMCE_UE_ERROR_PAGE_TABLE_WALK_IFETCH = 2,
+ OpalMCE_UE_ERROR_LOAD_STORE = 3,
+ OpalMCE_UE_ERROR_PAGE_TABLE_WALK_LOAD_STORE = 4,
+};
+
+enum OpalMCE_SlbErrorType {
+ OpalMCE_SLB_ERROR_INDETERMINATE = 0,
+ OpalMCE_SLB_ERROR_PARITY = 1,
+ OpalMCE_SLB_ERROR_MULTIHIT = 2,
+};
+
+enum OpalMCE_EratErrorType {
+ OpalMCE_ERAT_ERROR_INDETERMINATE = 0,
+ OpalMCE_ERAT_ERROR_PARITY = 1,
+ OpalMCE_ERAT_ERROR_MULTIHIT = 2,
+};
+
+enum OpalMCE_TlbErrorType {
+ OpalMCE_TLB_ERROR_INDETERMINATE = 0,
+ OpalMCE_TLB_ERROR_PARITY = 1,
+ OpalMCE_TLB_ERROR_MULTIHIT = 2,
+};
+
+enum OpalThreadStatus {
+ OPAL_THREAD_INACTIVE = 0x0,
+ OPAL_THREAD_STARTED = 0x1
+};
+
+enum OpalPciBusCompare {
+ OpalPciBusAny = 0, /* Any bus number match */
+ OpalPciBus3Bits = 2, /* Match top 3 bits of bus number */
+ OpalPciBus4Bits = 3, /* Match top 4 bits of bus number */
+ OpalPciBus5Bits = 4, /* Match top 5 bits of bus number */
+ OpalPciBus6Bits = 5, /* Match top 6 bits of bus number */
+ OpalPciBus7Bits = 6, /* Match top 7 bits of bus number */
+ OpalPciBusAll = 7, /* Match bus number exactly */
+};
+
+enum OpalDeviceCompare {
+ OPAL_IGNORE_RID_DEVICE_NUMBER = 0,
+ OPAL_COMPARE_RID_DEVICE_NUMBER = 1
+};
+
+enum OpalFuncCompare {
+ OPAL_IGNORE_RID_FUNCTION_NUMBER = 0,
+ OPAL_COMPARE_RID_FUNCTION_NUMBER = 1
+};
+
+enum OpalPeAction {
+ OPAL_UNMAP_PE = 0,
+ OPAL_MAP_PE = 1
+};
+
+enum OpalPciResetAndReinitScope {
+ OPAL_PHB_COMPLETE = 1, OPAL_PCI_LINK = 2, OPAL_PHB_ERROR = 3,
+ OPAL_PCI_HOT_RESET = 4, OPAL_PCI_FUNDAMENTAL_RESET = 5,
+ OPAL_PCI_IODA_RESET = 6,
+};
+
+enum OpalPciResetState { OPAL_DEASSERT_RESET = 0, OPAL_ASSERT_RESET = 1 };
+
+struct opal_machine_check_event {
+ enum OpalMCE_Version version:8; /* 0x00 */
+ uint8_t in_use; /* 0x01 */
+ enum OpalMCE_Severity severity:8; /* 0x02 */
+ enum OpalMCE_Initiator initiator:8; /* 0x03 */
+ enum OpalMCE_ErrorType error_type:8; /* 0x04 */
+ enum OpalMCE_Disposition disposition:8; /* 0x05 */
+ uint8_t reserved_1[2]; /* 0x06 */
+ uint64_t gpr3; /* 0x08 */
+ uint64_t srr0; /* 0x10 */
+ uint64_t srr1; /* 0x18 */
+ union { /* 0x20 */
+ struct {
+ enum OpalMCE_UeErrorType ue_error_type:8;
+ uint8_t effective_address_provided;
+ uint8_t physical_address_provided;
+ uint8_t reserved_1[5];
+ uint64_t effective_address;
+ uint64_t physical_address;
+ uint8_t reserved_2[8];
+ } ue_error;
+
+ struct {
+ enum OpalMCE_SlbErrorType slb_error_type:8;
+ uint8_t effective_address_provided;
+ uint8_t reserved_1[6];
+ uint64_t effective_address;
+ uint8_t reserved_2[16];
+ } slb_error;
+
+ struct {
+ enum OpalMCE_EratErrorType erat_error_type:8;
+ uint8_t effective_address_provided;
+ uint8_t reserved_1[6];
+ uint64_t effective_address;
+ uint8_t reserved_2[16];
+ } erat_error;
+
+ struct {
+ enum OpalMCE_TlbErrorType tlb_error_type:8;
+ uint8_t effective_address_provided;
+ uint8_t reserved_1[6];
+ uint64_t effective_address;
+ uint8_t reserved_2[16];
+ } tlb_error;
+ } u;
+};
+
+typedef struct oppanel_line {
+ /* XXX */
+} oppanel_line_t;
+
+/* API functions */
+int64_t opal_console_write(int64_t term_number, int64_t *length,
+ const uint8_t *buffer);
+int64_t opal_console_read(int64_t term_number, int64_t *length,
+ uint8_t *buffer);
+int64_t opal_console_write_buffer_space(int64_t term_number,
+ int64_t *length);
+int64_t opal_rtc_read(uint32_t *year_month_day,
+ uint64_t *hour_minute_second_millisecond);
+int64_t opal_rtc_write(uint32_t year_month_day,
+ uint64_t hour_minute_second_millisecond);
+int64_t opal_cec_power_down(uint64_t request);
+int64_t opal_cec_reboot(void);
+int64_t opal_read_nvram(uint64_t buffer, uint64_t size, uint64_t offset);
+int64_t opal_write_nvram(uint64_t buffer, uint64_t size, uint64_t offset);
+int64_t opal_handle_interrupt(uint64_t isn, uint64_t *outstanding_event_mask);
+int64_t opal_poll_events(uint64_t *outstanding_event_mask);
+int64_t opal_pci_set_hub_tce_memory(uint64_t hub_id, uint64_t tce_mem_addr,
+ uint64_t tce_mem_size);
+int64_t opal_pci_set_phb_tce_memory(uint64_t phb_id, uint64_t tce_mem_addr,
+ uint64_t tce_mem_size);
+int64_t opal_pci_config_read_byte(uint64_t phb_id, uint64_t bus_dev_func,
+ uint64_t offset, uint8_t *data);
+int64_t opal_pci_config_read_half_word(uint64_t phb_id, uint64_t bus_dev_func,
+ uint64_t offset, uint16_t *data);
+int64_t opal_pci_config_read_word(uint64_t phb_id, uint64_t bus_dev_func,
+ uint64_t offset, uint32_t *data);
+int64_t opal_pci_config_write_byte(uint64_t phb_id, uint64_t bus_dev_func,
+ uint64_t offset, uint8_t data);
+int64_t opal_pci_config_write_half_word(uint64_t phb_id, uint64_t bus_dev_func,
+ uint64_t offset, uint16_t data);
+int64_t opal_pci_config_write_word(uint64_t phb_id, uint64_t bus_dev_func,
+ uint64_t offset, uint32_t data);
+int64_t opal_set_xive(uint32_t isn, uint16_t server, uint8_t priority);
+int64_t opal_get_xive(uint32_t isn, uint16_t *server, uint8_t *priority);
+int64_t opal_register_exception_handler(uint64_t opal_exception,
+ uint64_t handler_address,
+ uint64_t glue_cache_line);
+int64_t opal_pci_eeh_freeze_status(uint64_t phb_id, uint64_t pe_number,
+ uint8_t *freeze_state,
+ uint16_t *pci_error_type,
+ uint64_t *phb_status);
+int64_t opal_pci_eeh_freeze_clear(uint64_t phb_id, uint64_t pe_number,
+ uint64_t eeh_action_token);
+int64_t opal_pci_shpc(uint64_t phb_id, uint64_t shpc_action, uint8_t *state);
+
+
+
+int64_t opal_pci_phb_mmio_enable(uint64_t phb_id, uint16_t window_type,
+ uint16_t window_num, uint16_t enable);
+int64_t opal_pci_set_phb_mem_window(uint64_t phb_id, uint16_t window_type,
+ uint16_t window_num,
+ uint64_t starting_real_address,
+ uint64_t starting_pci_address,
+ uint16_t segment_size);
+int64_t opal_pci_map_pe_mmio_window(uint64_t phb_id, uint16_t pe_number,
+ uint16_t window_type, uint16_t window_num,
+ uint16_t segment_num);
+int64_t opal_pci_set_phb_table_memory(uint64_t phb_id, uint64_t rtt_addr,
+ uint64_t ivt_addr, uint64_t ivt_len,
+ uint64_t reject_array_addr,
+ uint64_t peltv_addr);
+int64_t opal_pci_set_pe(uint64_t phb_id, uint64_t pe_number, uint64_t bus_dev_func,
+ uint8_t bus_compare, uint8_t dev_compare, uint8_t func_compare,
+ uint8_t pe_action);
+int64_t opal_pci_set_peltv(uint64_t phb_id, uint32_t parent_pe, uint32_t child_pe,
+ uint8_t state);
+int64_t opal_pci_set_mve(uint64_t phb_id, uint32_t mve_number, uint32_t pe_number);
+int64_t opal_pci_set_mve_enable(uint64_t phb_id, uint32_t mve_number,
+ uint32_t state);
+int64_t opal_pci_get_xive_reissue(uint64_t phb_id, uint32_t xive_number,
+ uint8_t *p_bit, uint8_t *q_bit);
+int64_t opal_pci_set_xive_reissue(uint64_t phb_id, uint32_t xive_number,
+ uint8_t p_bit, uint8_t q_bit);
+int64_t opal_pci_set_xive_pe(uint64_t phb_id, uint32_t pe_number,
+ uint32_t xive_num);
+int64_t opal_get_xive_source(uint64_t phb_id, uint32_t xive_num,
+ int32_t *interrupt_source_number);
+int64_t opal_get_msi_32(uint64_t phb_id, uint32_t mve_number, uint32_t xive_num,
+ uint8_t msi_range, uint32_t *msi_address,
+ uint32_t *message_data);
+int64_t opal_get_msi_64(uint64_t phb_id, uint32_t mve_number,
+ uint32_t xive_num, uint8_t msi_range,
+ uint64_t *msi_address, uint32_t *message_data);
+int64_t opal_start_cpu(uint64_t thread_number, uint64_t start_address);
+int64_t opal_query_cpu_status(uint64_t thread_number, uint8_t *thread_status);
+int64_t opal_write_oppanel(oppanel_line_t *lines, uint64_t num_lines);
+int64_t opal_pci_map_pe_dma_window(uint64_t phb_id, uint16_t pe_number, uint16_t window_id,
+ uint16_t tce_levels, uint64_t tce_table_addr,
+ uint64_t tce_table_size, uint64_t tce_page_size);
+int64_t opal_pci_map_pe_dma_window_real(uint64_t phb_id, uint16_t pe_number,
+ uint16_t dma_window_number, uint64_t pci_start_addr,
+ uint64_t pci_mem_size);
+int64_t opal_pci_reset(uint64_t phb_id, uint8_t reset_scope, uint8_t assert_state);
+
+/* Internal functions */
+extern int early_init_dt_scan_opal(unsigned long node, const char *uname, int depth, void *data);
+
+extern int opal_get_chars(uint32_t vtermno, char *buf, int count);
+extern int opal_put_chars(uint32_t vtermno, const char *buf, int total_len);
+
+extern void hvc_opal_init_early(void);
+
+/* Internal functions */
+extern int early_init_dt_scan_opal(unsigned long node, const char *uname,
+ int depth, void *data);
+
+#endif /* __ASSEMBLY__ */
#endif /* __OPAL_H */
--- /dev/null
+/*
+ * PowerNV OPAL API wrappers
+ *
+ * Copyright 2011 IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <asm/ppc_asm.h>
+#include <asm/hvcall.h>
+#include <asm/asm-offsets.h>
+#include <asm/opal.h>
+
+/* TODO:
+ *
+ * - Trace irqs in/off (needs saving/restoring all args, argh...)
+ * - Get r11 feed up by Dave so I can have better register usage
+ */
+#define OPAL_CALL(name, token) \
+ _GLOBAL(name); \
+ mflr r0; \
+ mfcr r12; \
+ std r0,16(r1); \
+ std r12,8(r1); \
+ std r1,PACAR1(r13); \
+ li r0,0; \
+ mfmsr r12; \
+ ori r0,r0,MSR_EE; \
+ std r12,PACASAVEDMSR(r13); \
+ andc r12,r12,r0; \
+ mtmsrd r12,1; \
+ LOAD_REG_ADDR(r0,.opal_return); \
+ mtlr r0; \
+ li r0,MSR_DR|MSR_IR; \
+ andc r12,r12,r0; \
+ li r0,token; \
+ mtspr SPRN_HSRR1,r12; \
+ LOAD_REG_ADDR(r11,opal); \
+ ld r12,8(r11); \
+ ld r2,0(r11); \
+ mtspr SPRN_HSRR0,r12; \
+ hrfid
+
+_STATIC(opal_return)
+ ld r2,PACATOC(r13);
+ ld r4,8(r1);
+ ld r5,16(r1);
+ ld r6,PACASAVEDMSR(r13);
+ mtspr SPRN_SRR0,r5;
+ mtspr SPRN_SRR1,r6;
+ mtcr r4;
+ rfid
+
+OPAL_CALL(opal_console_write, OPAL_CONSOLE_WRITE);
+OPAL_CALL(opal_console_read, OPAL_CONSOLE_READ);
+OPAL_CALL(opal_console_write_buffer_space, OPAL_CONSOLE_WRITE_BUFFER_SPACE);
+OPAL_CALL(opal_rtc_read, OPAL_RTC_READ);
+OPAL_CALL(opal_rtc_write, OPAL_RTC_WRITE);
+OPAL_CALL(opal_cec_power_down, OPAL_CEC_POWER_DOWN);
+OPAL_CALL(opal_cec_reboot, OPAL_CEC_REBOOT);
+OPAL_CALL(opal_read_nvram, OPAL_READ_NVRAM);
+OPAL_CALL(opal_write_nvram, OPAL_WRITE_NVRAM);
+OPAL_CALL(opal_handle_interrupt, OPAL_HANDLE_INTERRUPT);
+OPAL_CALL(opal_poll_events, OPAL_POLL_EVENTS);
+OPAL_CALL(opal_pci_set_hub_tce_memory, OPAL_PCI_SET_HUB_TCE_MEMORY);
+OPAL_CALL(opal_pci_set_phb_tce_memory, OPAL_PCI_SET_PHB_TCE_MEMORY);
+OPAL_CALL(opal_pci_config_read_byte, OPAL_PCI_CONFIG_READ_BYTE);
+OPAL_CALL(opal_pci_config_read_half_word, OPAL_PCI_CONFIG_READ_HALF_WORD);
+OPAL_CALL(opal_pci_config_read_word, OPAL_PCI_CONFIG_READ_WORD);
+OPAL_CALL(opal_pci_config_write_byte, OPAL_PCI_CONFIG_WRITE_BYTE);
+OPAL_CALL(opal_pci_config_write_half_word, OPAL_PCI_CONFIG_WRITE_HALF_WORD);
+OPAL_CALL(opal_pci_config_write_word, OPAL_PCI_CONFIG_WRITE_WORD);
+OPAL_CALL(opal_set_xive, OPAL_SET_XIVE);
+OPAL_CALL(opal_get_xive, OPAL_GET_XIVE);
+OPAL_CALL(opal_register_exception_handler, OPAL_REGISTER_OPAL_EXCEPTION_HANDLER);
+OPAL_CALL(opal_pci_eeh_freeze_status, OPAL_PCI_EEH_FREEZE_STATUS);
+OPAL_CALL(opal_pci_eeh_freeze_clear, OPAL_PCI_EEH_FREEZE_CLEAR);
+OPAL_CALL(opal_pci_shpc, OPAL_PCI_SHPC);
+OPAL_CALL(opal_pci_phb_mmio_enable, OPAL_PCI_PHB_MMIO_ENABLE);
+OPAL_CALL(opal_pci_set_phb_mem_window, OPAL_PCI_SET_PHB_MEM_WINDOW);
+OPAL_CALL(opal_pci_map_pe_mmio_window, OPAL_PCI_MAP_PE_MMIO_WINDOW);
+OPAL_CALL(opal_pci_set_phb_table_memory, OPAL_PCI_SET_PHB_TABLE_MEMORY);
+OPAL_CALL(opal_pci_set_pe, OPAL_PCI_SET_PE);
+OPAL_CALL(opal_pci_set_peltv, OPAL_PCI_SET_PELTV);
+OPAL_CALL(opal_pci_set_mve, OPAL_PCI_SET_MVE);
+OPAL_CALL(opal_pci_set_mve_enable, OPAL_PCI_SET_MVE_ENABLE);
+OPAL_CALL(opal_pci_get_xive_reissue, OPAL_PCI_GET_XIVE_REISSUE);
+OPAL_CALL(opal_pci_set_xive_reissue, OPAL_PCI_SET_XIVE_REISSUE);
+OPAL_CALL(opal_pci_set_xive_pe, OPAL_PCI_SET_XIVE_PE);
+OPAL_CALL(opal_get_xive_source, OPAL_GET_XIVE_SOURCE);
+OPAL_CALL(opal_get_msi_32, OPAL_GET_MSI_32);
+OPAL_CALL(opal_get_msi_64, OPAL_GET_MSI_64);
+OPAL_CALL(opal_start_cpu, OPAL_START_CPU);
+OPAL_CALL(opal_query_cpu_status, OPAL_QUERY_CPU_STATUS);
+OPAL_CALL(opal_write_oppanel, OPAL_WRITE_OPPANEL);
+OPAL_CALL(opal_pci_map_pe_dma_window, OPAL_PCI_MAP_PE_DMA_WINDOW);
+OPAL_CALL(opal_pci_map_pe_dma_window_real, OPAL_PCI_MAP_PE_DMA_WINDOW_REAL);
+OPAL_CALL(opal_pci_reset, OPAL_PCI_RESET);
--- /dev/null
+/*
+ * PowerNV OPAL high level interfaces
+ *
+ * Copyright 2011 IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#undef DEBUG
+
+#include <linux/types.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <asm/opal.h>
+#include <asm/firmware.h>
+
+#include "powernv.h"
+
+struct opal {
+ u64 base;
+ u64 entry;
+} opal;
+
+static struct device_node *opal_node;
+static DEFINE_SPINLOCK(opal_write_lock);
+
+int __init early_init_dt_scan_opal(unsigned long node,
+ const char *uname, int depth, void *data)
+{
+ const void *basep, *entryp;
+ unsigned long basesz, entrysz;
+
+ if (depth != 1 || strcmp(uname, "ibm,opal") != 0)
+ return 0;
+
+ basep = of_get_flat_dt_prop(node, "opal-base-address", &basesz);
+ entryp = of_get_flat_dt_prop(node, "opal-entry-address", &entrysz);
+
+ if (!basep || !entryp)
+ return 1;
+
+ opal.base = of_read_number(basep, basesz/4);
+ opal.entry = of_read_number(entryp, entrysz/4);
+
+ pr_debug("OPAL Base = 0x%llx (basep=%p basesz=%ld)\n",
+ opal.base, basep, basesz);
+ pr_debug("OPAL Entry = 0x%llx (entryp=%p basesz=%ld)\n",
+ opal.entry, entryp, entrysz);
+
+ powerpc_firmware_features |= FW_FEATURE_OPAL;
+ if (of_flat_dt_is_compatible(node, "ibm,opal-v2")) {
+ powerpc_firmware_features |= FW_FEATURE_OPALv2;
+ printk("OPAL V2 detected !\n");
+ } else {
+ printk("OPAL V1 detected !\n");
+ }
+
+ return 1;
+}
+
+int opal_get_chars(uint32_t vtermno, char *buf, int count)
+{
+ s64 len, rc;
+ u64 evt;
+
+ if (!opal.entry)
+ return 0;
+ opal_poll_events(&evt);
+ if ((evt & OPAL_EVENT_CONSOLE_INPUT) == 0)
+ return 0;
+ len = count;
+ rc = opal_console_read(vtermno, &len, buf);
+ if (rc == OPAL_SUCCESS)
+ return len;
+ return 0;
+}
+
+int opal_put_chars(uint32_t vtermno, const char *data, int total_len)
+{
+ int written = 0;
+ s64 len, rc = OPAL_BUSY;
+ unsigned long flags;
+ u64 evt;
+
+ if (!opal.entry)
+ return 0;
+
+ /* We want put_chars to be atomic to avoid mangling of hvsi
+ * packets. To do that, we first test for room and return
+ * -EAGAIN if there isn't enough
+ */
+ spin_lock_irqsave(&opal_write_lock, flags);
+ rc = opal_console_write_buffer_space(vtermno, &len);
+ if (rc || len < total_len) {
+ spin_unlock_irqrestore(&opal_write_lock, flags);
+ /* Closed -> drop characters */
+ if (rc)
+ return total_len;
+ opal_poll_events(&evt);
+ return -EAGAIN;
+ }
+
+ /* We still try to handle partial completions, though they
+ * should no longer happen.
+ */
+ while(total_len > 0 && (rc == OPAL_BUSY ||
+ rc == OPAL_BUSY_EVENT || rc == OPAL_SUCCESS)) {
+ len = total_len;
+ rc = opal_console_write(vtermno, &len, data);
+ if (rc == OPAL_SUCCESS) {
+ total_len -= len;
+ data += len;
+ written += len;
+ }
+ /* This is a bit nasty but we need that for the console to
+ * flush when there aren't any interrupts. We will clean
+ * things a bit later to limit that to synchronous path
+ * such as the kernel console and xmon/udbg
+ */
+ do
+ opal_poll_events(&evt);
+ while(rc == OPAL_SUCCESS && (evt & OPAL_EVENT_CONSOLE_OUTPUT));
+ }
+ spin_unlock_irqrestore(&opal_write_lock, flags);
+ return written;
+}
+
+static int __init opal_init(void)
+{
+ struct device_node *np, *consoles;
+
+ opal_node = of_find_node_by_path("/ibm,opal");
+ if (!opal_node) {
+ pr_warn("opal: Node not found\n");
+ return -ENODEV;
+ }
+ if (firmware_has_feature(FW_FEATURE_OPALv2))
+ consoles = of_find_node_by_path("/ibm,opal/consoles");
+ else
+ consoles = of_node_get(opal_node);
+
+ /* Register serial ports */
+ for_each_child_of_node(consoles, np) {
+ if (strcmp(np->name, "serial"))
+ continue;
+ of_platform_device_create(np, NULL, NULL);
+ }
+ of_node_put(consoles);
+ return 0;
+}
+subsys_initcall(opal_init);
projects / karo-tx-linux.git / commitdiff