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linux_dsm_epyc7002/arch/powerpc/platforms/powernv/opal-wrappers.S
Frederic Barrat 74d656d219 powerpc/powernv: Add opal calls for opencapi 
Add opal calls to interact with the NPU:

OPAL_NPU_SPA_SETUP: set the Shared Process Area (SPA)
The SPA is a table containing one entry (Process Element) per memory
context which can be accessed by the opencapi device.

OPAL_NPU_SPA_CLEAR_CACHE: clear the context cache
The NPU keeps a cache of recently accessed memory contexts. When a
Process Element is removed from the SPA, the cache for the link must
be cleared.

OPAL_NPU_TL_SET: configure the Transaction Layer
The Transaction Layer specification defines several templates for
messages to be exchanged on the link. During link setup, the host and
device must negotiate what templates are supported on both sides and
at what rates those messages can be sent.

Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-01-24 11:42:56 +11:00

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/*
* 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 <linux/jump_label.h>
#include <asm/ppc_asm.h>
#include <asm/hvcall.h>
#include <asm/asm-offsets.h>
#include <asm/opal.h>
.section ".text"
#ifdef CONFIG_TRACEPOINTS
#ifdef HAVE_JUMP_LABEL
#define OPAL_BRANCH(LABEL) \
ARCH_STATIC_BRANCH(LABEL, opal_tracepoint_key)
#else
.section ".toc","aw"
.globl opal_tracepoint_refcount
opal_tracepoint_refcount:
.8byte 0
.section ".text"
/*
* We branch around this in early init by using an unconditional cpu
* feature.
*/
#define OPAL_BRANCH(LABEL) \
BEGIN_FTR_SECTION; \
b 1f; \
END_FTR_SECTION(0, 1); \
ld r11,opal_tracepoint_refcount@toc(r2); \
cmpdi r11,0; \
bne- LABEL; \
1:
#endif
#else
#define OPAL_BRANCH(LABEL)
#endif
/*
* DO_OPAL_CALL assumes:
* r0 = opal call token
* r12 = msr
* LR has been saved
*/
#define DO_OPAL_CALL() \
mfcr r11; \
stw r11,8(r1); \
li r11,0; \
ori r11,r11,MSR_EE; \
std r12,PACASAVEDMSR(r13); \
andc r12,r12,r11; \
mtmsrd r12,1; \
LOAD_REG_ADDR(r11,opal_return); \
mtlr r11; \
li r11,MSR_DR|MSR_IR|MSR_LE;\
andc r12,r12,r11; \
mtspr SPRN_HSRR1,r12; \
LOAD_REG_ADDR(r11,opal); \
ld r12,8(r11); \
ld r2,0(r11); \
mtspr SPRN_HSRR0,r12; \
hrfid
#define OPAL_CALL(name, token) \
_GLOBAL_TOC(name); \
mfmsr r12; \
mflr r0; \
andi. r11,r12,MSR_IR|MSR_DR; \
std r0,PPC_LR_STKOFF(r1); \
li r0,token; \
beq opal_real_call; \
OPAL_BRANCH(opal_tracepoint_entry) \
DO_OPAL_CALL()
opal_return:
/*
* Fixup endian on OPAL return... we should be able to simplify
* this by instead converting the below trampoline to a set of
* bytes (always BE) since MSR:LE will end up fixed up as a side
* effect of the rfid.
*/
FIXUP_ENDIAN_HV
ld r2,PACATOC(r13);
lwz r4,8(r1);
ld r5,PPC_LR_STKOFF(r1);
ld r6,PACASAVEDMSR(r13);
mtcr r4;
mtspr SPRN_HSRR0,r5;
mtspr SPRN_HSRR1,r6;
hrfid
opal_real_call:
mfcr r11
stw r11,8(r1)
/* Set opal return address */
LOAD_REG_ADDR(r11, opal_return_realmode)
mtlr r11
li r11,MSR_LE
andc r12,r12,r11
mtspr SPRN_HSRR1,r12
LOAD_REG_ADDR(r11,opal)
ld r12,8(r11)
ld r2,0(r11)
mtspr SPRN_HSRR0,r12
hrfid
opal_return_realmode:
FIXUP_ENDIAN_HV
ld r2,PACATOC(r13);
lwz r11,8(r1);
ld r12,PPC_LR_STKOFF(r1)
mtcr r11;
mtlr r12
blr
#ifdef CONFIG_TRACEPOINTS
opal_tracepoint_entry:
stdu r1,-STACKFRAMESIZE(r1)
std r0,STK_REG(R23)(r1)
std r3,STK_REG(R24)(r1)
std r4,STK_REG(R25)(r1)
std r5,STK_REG(R26)(r1)
std r6,STK_REG(R27)(r1)
std r7,STK_REG(R28)(r1)
std r8,STK_REG(R29)(r1)
std r9,STK_REG(R30)(r1)
std r10,STK_REG(R31)(r1)
mr r3,r0
addi r4,r1,STK_REG(R24)
bl __trace_opal_entry
ld r0,STK_REG(R23)(r1)
ld r3,STK_REG(R24)(r1)
ld r4,STK_REG(R25)(r1)
ld r5,STK_REG(R26)(r1)
ld r6,STK_REG(R27)(r1)
ld r7,STK_REG(R28)(r1)
ld r8,STK_REG(R29)(r1)
ld r9,STK_REG(R30)(r1)
ld r10,STK_REG(R31)(r1)
/* setup LR so we return via tracepoint_return */
LOAD_REG_ADDR(r11,opal_tracepoint_return)
std r11,16(r1)
mfmsr r12
DO_OPAL_CALL()
opal_tracepoint_return:
std r3,STK_REG(R31)(r1)
mr r4,r3
ld r3,STK_REG(R23)(r1)
bl __trace_opal_exit
ld r3,STK_REG(R31)(r1)
addi r1,r1,STACKFRAMESIZE
ld r0,16(r1)
mtlr r0
blr
#endif
OPAL_CALL(opal_invalid_call, OPAL_INVALID_CALL);
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_cec_reboot2, OPAL_CEC_REBOOT2);
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_eeh_freeze_set, OPAL_PCI_EEH_FREEZE_SET);
OPAL_CALL(opal_pci_err_inject, OPAL_PCI_ERR_INJECT);
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);
OPAL_CALL(opal_pci_get_hub_diag_data, OPAL_PCI_GET_HUB_DIAG_DATA);
OPAL_CALL(opal_pci_get_phb_diag_data, OPAL_PCI_GET_PHB_DIAG_DATA);
OPAL_CALL(opal_pci_fence_phb, OPAL_PCI_FENCE_PHB);
OPAL_CALL(opal_pci_reinit, OPAL_PCI_REINIT);
OPAL_CALL(opal_pci_mask_pe_error, OPAL_PCI_MASK_PE_ERROR);
OPAL_CALL(opal_set_slot_led_status, OPAL_SET_SLOT_LED_STATUS);
OPAL_CALL(opal_get_epow_status, OPAL_GET_EPOW_STATUS);
OPAL_CALL(opal_get_dpo_status, OPAL_GET_DPO_STATUS);
OPAL_CALL(opal_set_system_attention_led, OPAL_SET_SYSTEM_ATTENTION_LED);
OPAL_CALL(opal_pci_next_error, OPAL_PCI_NEXT_ERROR);
OPAL_CALL(opal_pci_poll, OPAL_PCI_POLL);
OPAL_CALL(opal_pci_msi_eoi, OPAL_PCI_MSI_EOI);
OPAL_CALL(opal_pci_get_phb_diag_data2, OPAL_PCI_GET_PHB_DIAG_DATA2);
OPAL_CALL(opal_xscom_read, OPAL_XSCOM_READ);
OPAL_CALL(opal_xscom_write, OPAL_XSCOM_WRITE);
OPAL_CALL(opal_lpc_read, OPAL_LPC_READ);
OPAL_CALL(opal_lpc_write, OPAL_LPC_WRITE);
OPAL_CALL(opal_return_cpu, OPAL_RETURN_CPU);
OPAL_CALL(opal_reinit_cpus, OPAL_REINIT_CPUS);
OPAL_CALL(opal_read_elog, OPAL_ELOG_READ);
OPAL_CALL(opal_send_ack_elog, OPAL_ELOG_ACK);
OPAL_CALL(opal_get_elog_size, OPAL_ELOG_SIZE);
OPAL_CALL(opal_resend_pending_logs, OPAL_ELOG_RESEND);
OPAL_CALL(opal_write_elog, OPAL_ELOG_WRITE);
OPAL_CALL(opal_validate_flash, OPAL_FLASH_VALIDATE);
OPAL_CALL(opal_manage_flash, OPAL_FLASH_MANAGE);
OPAL_CALL(opal_update_flash, OPAL_FLASH_UPDATE);
OPAL_CALL(opal_resync_timebase, OPAL_RESYNC_TIMEBASE);
OPAL_CALL(opal_check_token, OPAL_CHECK_TOKEN);
OPAL_CALL(opal_dump_init, OPAL_DUMP_INIT);
OPAL_CALL(opal_dump_info, OPAL_DUMP_INFO);
OPAL_CALL(opal_dump_info2, OPAL_DUMP_INFO2);
OPAL_CALL(opal_dump_read, OPAL_DUMP_READ);
OPAL_CALL(opal_dump_ack, OPAL_DUMP_ACK);
OPAL_CALL(opal_get_msg, OPAL_GET_MSG);
OPAL_CALL(opal_write_oppanel_async, OPAL_WRITE_OPPANEL_ASYNC);
OPAL_CALL(opal_check_completion, OPAL_CHECK_ASYNC_COMPLETION);
OPAL_CALL(opal_dump_resend_notification, OPAL_DUMP_RESEND);
OPAL_CALL(opal_sync_host_reboot, OPAL_SYNC_HOST_REBOOT);
OPAL_CALL(opal_sensor_read, OPAL_SENSOR_READ);
OPAL_CALL(opal_get_param, OPAL_GET_PARAM);
OPAL_CALL(opal_set_param, OPAL_SET_PARAM);
OPAL_CALL(opal_handle_hmi, OPAL_HANDLE_HMI);
OPAL_CALL(opal_config_cpu_idle_state, OPAL_CONFIG_CPU_IDLE_STATE);
OPAL_CALL(opal_slw_set_reg, OPAL_SLW_SET_REG);
OPAL_CALL(opal_register_dump_region, OPAL_REGISTER_DUMP_REGION);
OPAL_CALL(opal_unregister_dump_region, OPAL_UNREGISTER_DUMP_REGION);
OPAL_CALL(opal_pci_set_phb_cxl_mode, OPAL_PCI_SET_PHB_CAPI_MODE);
OPAL_CALL(opal_tpo_write, OPAL_WRITE_TPO);
OPAL_CALL(opal_tpo_read, OPAL_READ_TPO);
OPAL_CALL(opal_ipmi_send, OPAL_IPMI_SEND);
OPAL_CALL(opal_ipmi_recv, OPAL_IPMI_RECV);
OPAL_CALL(opal_i2c_request, OPAL_I2C_REQUEST);
OPAL_CALL(opal_flash_read, OPAL_FLASH_READ);
OPAL_CALL(opal_flash_write, OPAL_FLASH_WRITE);
OPAL_CALL(opal_flash_erase, OPAL_FLASH_ERASE);
OPAL_CALL(opal_prd_msg, OPAL_PRD_MSG);
OPAL_CALL(opal_leds_get_ind, OPAL_LEDS_GET_INDICATOR);
OPAL_CALL(opal_leds_set_ind, OPAL_LEDS_SET_INDICATOR);
OPAL_CALL(opal_console_flush, OPAL_CONSOLE_FLUSH);
OPAL_CALL(opal_get_device_tree, OPAL_GET_DEVICE_TREE);
OPAL_CALL(opal_pci_get_presence_state, OPAL_PCI_GET_PRESENCE_STATE);
OPAL_CALL(opal_pci_get_power_state, OPAL_PCI_GET_POWER_STATE);
OPAL_CALL(opal_pci_set_power_state, OPAL_PCI_SET_POWER_STATE);
OPAL_CALL(opal_int_get_xirr, OPAL_INT_GET_XIRR);
OPAL_CALL(opal_int_set_cppr, OPAL_INT_SET_CPPR);
OPAL_CALL(opal_int_eoi, OPAL_INT_EOI);
OPAL_CALL(opal_int_set_mfrr, OPAL_INT_SET_MFRR);
OPAL_CALL(opal_pci_tce_kill, OPAL_PCI_TCE_KILL);
OPAL_CALL(opal_nmmu_set_ptcr, OPAL_NMMU_SET_PTCR);
OPAL_CALL(opal_xive_reset, OPAL_XIVE_RESET);
OPAL_CALL(opal_xive_get_irq_info, OPAL_XIVE_GET_IRQ_INFO);
OPAL_CALL(opal_xive_get_irq_config, OPAL_XIVE_GET_IRQ_CONFIG);
OPAL_CALL(opal_xive_set_irq_config, OPAL_XIVE_SET_IRQ_CONFIG);
OPAL_CALL(opal_xive_get_queue_info, OPAL_XIVE_GET_QUEUE_INFO);
OPAL_CALL(opal_xive_set_queue_info, OPAL_XIVE_SET_QUEUE_INFO);
OPAL_CALL(opal_xive_donate_page, OPAL_XIVE_DONATE_PAGE);
OPAL_CALL(opal_xive_alloc_vp_block, OPAL_XIVE_ALLOCATE_VP_BLOCK);
OPAL_CALL(opal_xive_free_vp_block, OPAL_XIVE_FREE_VP_BLOCK);
OPAL_CALL(opal_xive_allocate_irq, OPAL_XIVE_ALLOCATE_IRQ);
OPAL_CALL(opal_xive_free_irq, OPAL_XIVE_FREE_IRQ);
OPAL_CALL(opal_xive_get_vp_info, OPAL_XIVE_GET_VP_INFO);
OPAL_CALL(opal_xive_set_vp_info, OPAL_XIVE_SET_VP_INFO);
OPAL_CALL(opal_xive_sync, OPAL_XIVE_SYNC);
OPAL_CALL(opal_xive_dump, OPAL_XIVE_DUMP);
OPAL_CALL(opal_signal_system_reset, OPAL_SIGNAL_SYSTEM_RESET);
OPAL_CALL(opal_npu_init_context, OPAL_NPU_INIT_CONTEXT);
OPAL_CALL(opal_npu_destroy_context, OPAL_NPU_DESTROY_CONTEXT);
OPAL_CALL(opal_npu_map_lpar, OPAL_NPU_MAP_LPAR);
OPAL_CALL(opal_imc_counters_init, OPAL_IMC_COUNTERS_INIT);
OPAL_CALL(opal_imc_counters_start, OPAL_IMC_COUNTERS_START);
OPAL_CALL(opal_imc_counters_stop, OPAL_IMC_COUNTERS_STOP);
OPAL_CALL(opal_pci_set_p2p, OPAL_PCI_SET_P2P);
OPAL_CALL(opal_get_powercap, OPAL_GET_POWERCAP);
OPAL_CALL(opal_set_powercap, OPAL_SET_POWERCAP);
OPAL_CALL(opal_get_power_shift_ratio, OPAL_GET_POWER_SHIFT_RATIO);
OPAL_CALL(opal_set_power_shift_ratio, OPAL_SET_POWER_SHIFT_RATIO);
OPAL_CALL(opal_sensor_group_clear, OPAL_SENSOR_GROUP_CLEAR);
OPAL_CALL(opal_npu_spa_setup, OPAL_NPU_SPA_SETUP);
OPAL_CALL(opal_npu_spa_clear_cache, OPAL_NPU_SPA_CLEAR_CACHE);
OPAL_CALL(opal_npu_tl_set, OPAL_NPU_TL_SET);
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