diff options
Diffstat (limited to 'drivers/gpu/drm/panthor/panthor_fw.h')
| -rw-r--r-- | drivers/gpu/drm/panthor/panthor_fw.h | 503 |
1 files changed, 503 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panthor/panthor_fw.h b/drivers/gpu/drm/panthor/panthor_fw.h new file mode 100644 index 000000000000..22448abde992 --- /dev/null +++ b/drivers/gpu/drm/panthor/panthor_fw.h @@ -0,0 +1,503 @@ +/* SPDX-License-Identifier: GPL-2.0 or MIT */ +/* Copyright 2023 Collabora ltd. */ + +#ifndef __PANTHOR_MCU_H__ +#define __PANTHOR_MCU_H__ + +#include <linux/types.h> + +struct panthor_device; +struct panthor_kernel_bo; + +#define MAX_CSGS 31 +#define MAX_CS_PER_CSG 32 + +struct panthor_fw_ringbuf_input_iface { + u64 insert; + u64 extract; +}; + +struct panthor_fw_ringbuf_output_iface { + u64 extract; + u32 active; +}; + +struct panthor_fw_cs_control_iface { +#define CS_FEATURES_WORK_REGS(x) (((x) & GENMASK(7, 0)) + 1) +#define CS_FEATURES_SCOREBOARDS(x) (((x) & GENMASK(15, 8)) >> 8) +#define CS_FEATURES_COMPUTE BIT(16) +#define CS_FEATURES_FRAGMENT BIT(17) +#define CS_FEATURES_TILER BIT(18) + u32 features; + u32 input_va; + u32 output_va; +}; + +struct panthor_fw_cs_input_iface { +#define CS_STATE_MASK GENMASK(2, 0) +#define CS_STATE_STOP 0 +#define CS_STATE_START 1 +#define CS_EXTRACT_EVENT BIT(4) +#define CS_IDLE_SYNC_WAIT BIT(8) +#define CS_IDLE_PROTM_PENDING BIT(9) +#define CS_IDLE_EMPTY BIT(10) +#define CS_IDLE_RESOURCE_REQ BIT(11) +#define CS_TILER_OOM BIT(26) +#define CS_PROTM_PENDING BIT(27) +#define CS_FATAL BIT(30) +#define CS_FAULT BIT(31) +#define CS_REQ_MASK (CS_STATE_MASK | \ + CS_EXTRACT_EVENT | \ + CS_IDLE_SYNC_WAIT | \ + CS_IDLE_PROTM_PENDING | \ + CS_IDLE_EMPTY | \ + CS_IDLE_RESOURCE_REQ) +#define CS_EVT_MASK (CS_TILER_OOM | \ + CS_PROTM_PENDING | \ + CS_FATAL | \ + CS_FAULT) + u32 req; + +#define CS_CONFIG_PRIORITY(x) ((x) & GENMASK(3, 0)) +#define CS_CONFIG_DOORBELL(x) (((x) << 8) & GENMASK(15, 8)) + u32 config; + u32 reserved1; + u32 ack_irq_mask; + u64 ringbuf_base; + u32 ringbuf_size; + u32 reserved2; + u64 heap_start; + u64 heap_end; + u64 ringbuf_input; + u64 ringbuf_output; + u32 instr_config; + u32 instrbuf_size; + u64 instrbuf_base; + u64 instrbuf_offset_ptr; +}; + +struct panthor_fw_cs_output_iface { + u32 ack; + u32 reserved1[15]; + u64 status_cmd_ptr; + +#define CS_STATUS_WAIT_SB_MASK GENMASK(15, 0) +#define CS_STATUS_WAIT_SB_SRC_MASK GENMASK(19, 16) +#define CS_STATUS_WAIT_SB_SRC_NONE (0 << 16) +#define CS_STATUS_WAIT_SB_SRC_WAIT (8 << 16) +#define CS_STATUS_WAIT_SYNC_COND_LE (0 << 24) +#define CS_STATUS_WAIT_SYNC_COND_GT (1 << 24) +#define CS_STATUS_WAIT_SYNC_COND_MASK GENMASK(27, 24) +#define CS_STATUS_WAIT_PROGRESS BIT(28) +#define CS_STATUS_WAIT_PROTM BIT(29) +#define CS_STATUS_WAIT_SYNC_64B BIT(30) +#define CS_STATUS_WAIT_SYNC BIT(31) + u32 status_wait; + u32 status_req_resource; + u64 status_wait_sync_ptr; + u32 status_wait_sync_value; + u32 status_scoreboards; + +#define CS_STATUS_BLOCKED_REASON_UNBLOCKED 0 +#define CS_STATUS_BLOCKED_REASON_SB_WAIT 1 +#define CS_STATUS_BLOCKED_REASON_PROGRESS_WAIT 2 +#define CS_STATUS_BLOCKED_REASON_SYNC_WAIT 3 +#define CS_STATUS_BLOCKED_REASON_DEFERRED 5 +#define CS_STATUS_BLOCKED_REASON_RES 6 +#define CS_STATUS_BLOCKED_REASON_FLUSH 7 +#define CS_STATUS_BLOCKED_REASON_MASK GENMASK(3, 0) + u32 status_blocked_reason; + u32 status_wait_sync_value_hi; + u32 reserved2[6]; + +#define CS_EXCEPTION_TYPE(x) ((x) & GENMASK(7, 0)) +#define CS_EXCEPTION_DATA(x) (((x) >> 8) & GENMASK(23, 0)) + u32 fault; + u32 fatal; + u64 fault_info; + u64 fatal_info; + u32 reserved3[10]; + u32 heap_vt_start; + u32 heap_vt_end; + u32 reserved4; + u32 heap_frag_end; + u64 heap_address; +}; + +struct panthor_fw_csg_control_iface { + u32 features; + u32 input_va; + u32 output_va; + u32 suspend_size; + u32 protm_suspend_size; + u32 stream_num; + u32 stream_stride; +}; + +struct panthor_fw_csg_input_iface { +#define CSG_STATE_MASK GENMASK(2, 0) +#define CSG_STATE_TERMINATE 0 +#define CSG_STATE_START 1 +#define CSG_STATE_SUSPEND 2 +#define CSG_STATE_RESUME 3 +#define CSG_ENDPOINT_CONFIG BIT(4) +#define CSG_STATUS_UPDATE BIT(5) +#define CSG_SYNC_UPDATE BIT(28) +#define CSG_IDLE BIT(29) +#define CSG_DOORBELL BIT(30) +#define CSG_PROGRESS_TIMER_EVENT BIT(31) +#define CSG_REQ_MASK (CSG_STATE_MASK | \ + CSG_ENDPOINT_CONFIG | \ + CSG_STATUS_UPDATE) +#define CSG_EVT_MASK (CSG_SYNC_UPDATE | \ + CSG_IDLE | \ + CSG_PROGRESS_TIMER_EVENT) + u32 req; + u32 ack_irq_mask; + + u32 doorbell_req; + u32 cs_irq_ack; + u32 reserved1[4]; + u64 allow_compute; + u64 allow_fragment; + u32 allow_other; + +#define CSG_EP_REQ_COMPUTE(x) ((x) & GENMASK(7, 0)) +#define CSG_EP_REQ_FRAGMENT(x) (((x) << 8) & GENMASK(15, 8)) +#define CSG_EP_REQ_TILER(x) (((x) << 16) & GENMASK(19, 16)) +#define CSG_EP_REQ_EXCL_COMPUTE BIT(20) +#define CSG_EP_REQ_EXCL_FRAGMENT BIT(21) +#define CSG_EP_REQ_PRIORITY(x) (((x) << 28) & GENMASK(31, 28)) +#define CSG_EP_REQ_PRIORITY_MASK GENMASK(31, 28) + u32 endpoint_req; + u32 reserved2[2]; + u64 suspend_buf; + u64 protm_suspend_buf; + u32 config; + u32 iter_trace_config; +}; + +struct panthor_fw_csg_output_iface { + u32 ack; + u32 reserved1; + u32 doorbell_ack; + u32 cs_irq_req; + u32 status_endpoint_current; + u32 status_endpoint_req; + +#define CSG_STATUS_STATE_IS_IDLE BIT(0) + u32 status_state; + u32 resource_dep; +}; + +struct panthor_fw_global_control_iface { + u32 version; + u32 features; + u32 input_va; + u32 output_va; + u32 group_num; + u32 group_stride; + u32 perfcnt_size; + u32 instr_features; +}; + +struct panthor_fw_global_input_iface { +#define GLB_HALT BIT(0) +#define GLB_CFG_PROGRESS_TIMER BIT(1) +#define GLB_CFG_ALLOC_EN BIT(2) +#define GLB_CFG_POWEROFF_TIMER BIT(3) +#define GLB_PROTM_ENTER BIT(4) +#define GLB_PERFCNT_EN BIT(5) +#define GLB_PERFCNT_SAMPLE BIT(6) +#define GLB_COUNTER_EN BIT(7) +#define GLB_PING BIT(8) +#define GLB_FWCFG_UPDATE BIT(9) +#define GLB_IDLE_EN BIT(10) +#define GLB_SLEEP BIT(12) +#define GLB_INACTIVE_COMPUTE BIT(20) +#define GLB_INACTIVE_FRAGMENT BIT(21) +#define GLB_INACTIVE_TILER BIT(22) +#define GLB_PROTM_EXIT BIT(23) +#define GLB_PERFCNT_THRESHOLD BIT(24) +#define GLB_PERFCNT_OVERFLOW BIT(25) +#define GLB_IDLE BIT(26) +#define GLB_DBG_CSF BIT(30) +#define GLB_DBG_HOST BIT(31) +#define GLB_REQ_MASK GENMASK(10, 0) +#define GLB_EVT_MASK GENMASK(26, 20) + u32 req; + u32 ack_irq_mask; + u32 doorbell_req; + u32 reserved1; + u32 progress_timer; + +#define GLB_TIMER_VAL(x) ((x) & GENMASK(30, 0)) +#define GLB_TIMER_SOURCE_GPU_COUNTER BIT(31) + u32 poweroff_timer; + u64 core_en_mask; + u32 reserved2; + u32 perfcnt_as; + u64 perfcnt_base; + u32 perfcnt_extract; + u32 reserved3[3]; + u32 perfcnt_config; + u32 perfcnt_csg_select; + u32 perfcnt_fw_enable; + u32 perfcnt_csg_enable; + u32 perfcnt_csf_enable; + u32 perfcnt_shader_enable; + u32 perfcnt_tiler_enable; + u32 perfcnt_mmu_l2_enable; + u32 reserved4[8]; + u32 idle_timer; +}; + +enum panthor_fw_halt_status { + PANTHOR_FW_HALT_OK = 0, + PANTHOR_FW_HALT_ON_PANIC = 0x4e, + PANTHOR_FW_HALT_ON_WATCHDOG_EXPIRATION = 0x4f, +}; + +struct panthor_fw_global_output_iface { + u32 ack; + u32 reserved1; + u32 doorbell_ack; + u32 reserved2; + u32 halt_status; + u32 perfcnt_status; + u32 perfcnt_insert; +}; + +/** + * struct panthor_fw_cs_iface - Firmware command stream slot interface + */ +struct panthor_fw_cs_iface { + /** + * @lock: Lock protecting access to the panthor_fw_cs_input_iface::req + * field. + * + * Needed so we can update the req field concurrently from the interrupt + * handler and the scheduler logic. + * + * TODO: Ideally we'd want to use a cmpxchg() to update the req, but FW + * interface sections are mapped uncached/write-combined right now, and + * using cmpxchg() on such mappings leads to SError faults. Revisit when + * we have 'SHARED' GPU mappings hooked up. + */ + spinlock_t lock; + + /** + * @control: Command stream slot control interface. + * + * Used to expose command stream slot properties. + * + * This interface is read-only. + */ + struct panthor_fw_cs_control_iface *control; + + /** + * @input: Command stream slot input interface. + * + * Used for host updates/events. + */ + struct panthor_fw_cs_input_iface *input; + + /** + * @output: Command stream slot output interface. + * + * Used for FW updates/events. + * + * This interface is read-only. + */ + const struct panthor_fw_cs_output_iface *output; +}; + +/** + * struct panthor_fw_csg_iface - Firmware command stream group slot interface + */ +struct panthor_fw_csg_iface { + /** + * @lock: Lock protecting access to the panthor_fw_csg_input_iface::req + * field. + * + * Needed so we can update the req field concurrently from the interrupt + * handler and the scheduler logic. + * + * TODO: Ideally we'd want to use a cmpxchg() to update the req, but FW + * interface sections are mapped uncached/write-combined right now, and + * using cmpxchg() on such mappings leads to SError faults. Revisit when + * we have 'SHARED' GPU mappings hooked up. + */ + spinlock_t lock; + + /** + * @control: Command stream group slot control interface. + * + * Used to expose command stream group slot properties. + * + * This interface is read-only. + */ + const struct panthor_fw_csg_control_iface *control; + + /** + * @input: Command stream slot input interface. + * + * Used for host updates/events. + */ + struct panthor_fw_csg_input_iface *input; + + /** + * @output: Command stream group slot output interface. + * + * Used for FW updates/events. + * + * This interface is read-only. + */ + const struct panthor_fw_csg_output_iface *output; +}; + +/** + * struct panthor_fw_global_iface - Firmware global interface + */ +struct panthor_fw_global_iface { + /** + * @lock: Lock protecting access to the panthor_fw_global_input_iface::req + * field. + * + * Needed so we can update the req field concurrently from the interrupt + * handler and the scheduler/FW management logic. + * + * TODO: Ideally we'd want to use a cmpxchg() to update the req, but FW + * interface sections are mapped uncached/write-combined right now, and + * using cmpxchg() on such mappings leads to SError faults. Revisit when + * we have 'SHARED' GPU mappings hooked up. + */ + spinlock_t lock; + + /** + * @control: Command stream group slot control interface. + * + * Used to expose global FW properties. + * + * This interface is read-only. + */ + const struct panthor_fw_global_control_iface *control; + + /** + * @input: Global input interface. + * + * Used for host updates/events. + */ + struct panthor_fw_global_input_iface *input; + + /** + * @output: Global output interface. + * + * Used for FW updates/events. + * + * This interface is read-only. + */ + const struct panthor_fw_global_output_iface *output; +}; + +/** + * panthor_fw_toggle_reqs() - Toggle acknowledge bits to send an event to the FW + * @__iface: The interface to operate on. + * @__in_reg: Name of the register to update in the input section of the interface. + * @__out_reg: Name of the register to take as a reference in the output section of the + * interface. + * @__mask: Mask to apply to the update. + * + * The Host -> FW event/message passing was designed to be lockless, with each side of + * the channel having its writeable section. Events are signaled as a difference between + * the host and FW side in the req/ack registers (when a bit differs, there's an event + * pending, when they are the same, nothing needs attention). + * + * This helper allows one to update the req register based on the current value of the + * ack register managed by the FW. Toggling a specific bit will flag an event. In order + * for events to be re-evaluated, the interface doorbell needs to be rung. + * + * Concurrent accesses to the same req register is covered. + * + * Anything requiring atomic updates to multiple registers requires a dedicated lock. + */ +#define panthor_fw_toggle_reqs(__iface, __in_reg, __out_reg, __mask) \ + do { \ + u32 __cur_val, __new_val, __out_val; \ + spin_lock(&(__iface)->lock); \ + __cur_val = READ_ONCE((__iface)->input->__in_reg); \ + __out_val = READ_ONCE((__iface)->output->__out_reg); \ + __new_val = ((__out_val ^ (__mask)) & (__mask)) | (__cur_val & ~(__mask)); \ + WRITE_ONCE((__iface)->input->__in_reg, __new_val); \ + spin_unlock(&(__iface)->lock); \ + } while (0) + +/** + * panthor_fw_update_reqs() - Update bits to reflect a configuration change + * @__iface: The interface to operate on. + * @__in_reg: Name of the register to update in the input section of the interface. + * @__val: Value to set. + * @__mask: Mask to apply to the update. + * + * Some configuration get passed through req registers that are also used to + * send events to the FW. Those req registers being updated from the interrupt + * handler, they require special helpers to update the configuration part as well. + * + * Concurrent accesses to the same req register is covered. + * + * Anything requiring atomic updates to multiple registers requires a dedicated lock. + */ +#define panthor_fw_update_reqs(__iface, __in_reg, __val, __mask) \ + do { \ + u32 __cur_val, __new_val; \ + spin_lock(&(__iface)->lock); \ + __cur_val = READ_ONCE((__iface)->input->__in_reg); \ + __new_val = (__cur_val & ~(__mask)) | ((__val) & (__mask)); \ + WRITE_ONCE((__iface)->input->__in_reg, __new_val); \ + spin_unlock(&(__iface)->lock); \ + } while (0) + +struct panthor_fw_global_iface * +panthor_fw_get_glb_iface(struct panthor_device *ptdev); + +struct panthor_fw_csg_iface * +panthor_fw_get_csg_iface(struct panthor_device *ptdev, u32 csg_slot); + +struct panthor_fw_cs_iface * +panthor_fw_get_cs_iface(struct panthor_device *ptdev, u32 csg_slot, u32 cs_slot); + +int panthor_fw_csg_wait_acks(struct panthor_device *ptdev, u32 csg_id, u32 req_mask, + u32 *acked, u32 timeout_ms); + +int panthor_fw_glb_wait_acks(struct panthor_device *ptdev, u32 req_mask, u32 *acked, + u32 timeout_ms); + +void panthor_fw_ring_csg_doorbells(struct panthor_device *ptdev, u32 csg_slot); + +struct panthor_kernel_bo * +panthor_fw_alloc_queue_iface_mem(struct panthor_device *ptdev, + struct panthor_fw_ringbuf_input_iface **input, + const struct panthor_fw_ringbuf_output_iface **output, + u32 *input_fw_va, u32 *output_fw_va); +struct panthor_kernel_bo * +panthor_fw_alloc_suspend_buf_mem(struct panthor_device *ptdev, size_t size); + +struct panthor_vm *panthor_fw_vm(struct panthor_device *ptdev); + +void panthor_fw_pre_reset(struct panthor_device *ptdev, bool on_hang); +int panthor_fw_post_reset(struct panthor_device *ptdev); + +static inline void panthor_fw_suspend(struct panthor_device *ptdev) +{ + panthor_fw_pre_reset(ptdev, false); +} + +static inline int panthor_fw_resume(struct panthor_device *ptdev) +{ + return panthor_fw_post_reset(ptdev); +} + +int panthor_fw_init(struct panthor_device *ptdev); +void panthor_fw_unplug(struct panthor_device *ptdev); + +#endif |