diff options
Diffstat (limited to 'drivers/gpu/drm/v3d/v3d_drv.h')
| -rw-r--r-- | drivers/gpu/drm/v3d/v3d_drv.h | 528 |
1 files changed, 420 insertions, 108 deletions
diff --git a/drivers/gpu/drm/v3d/v3d_drv.h b/drivers/gpu/drm/v3d/v3d_drv.h index dcb772a19191..1884686985b8 100644 --- a/drivers/gpu/drm/v3d/v3d_drv.h +++ b/drivers/gpu/drm/v3d/v3d_drv.h @@ -1,47 +1,140 @@ // SPDX-License-Identifier: GPL-2.0+ /* Copyright (C) 2015-2018 Broadcom */ -#include <linux/reservation.h> -#include <linux/mm_types.h> -#include <drm/drmP.h> +#include <linux/delay.h> +#include <linux/mutex.h> +#include <linux/spinlock_types.h> +#include <linux/workqueue.h> + #include <drm/drm_encoder.h> #include <drm/drm_gem.h> +#include <drm/drm_gem_shmem_helper.h> #include <drm/gpu_scheduler.h> + +#include "v3d_performance_counters.h" + #include "uapi/drm/v3d_drm.h" -#define GMP_GRANULARITY (128 * 1024) +struct clk; +struct platform_device; +struct reset_control; -/* Enum for each of the V3D queues. */ -enum v3d_queue { - V3D_BIN, - V3D_RENDER, - V3D_TFU, -}; +#define V3D_MMU_PAGE_SHIFT 12 +#define V3D_PAGE_FACTOR (PAGE_SIZE >> V3D_MMU_PAGE_SHIFT) + +#define V3D_MAX_QUEUES (V3D_CPU + 1) -#define V3D_MAX_QUEUES (V3D_TFU + 1) +static inline char *v3d_queue_to_string(enum v3d_queue queue) +{ + switch (queue) { + case V3D_BIN: return "bin"; + case V3D_RENDER: return "render"; + case V3D_TFU: return "tfu"; + case V3D_CSD: return "csd"; + case V3D_CACHE_CLEAN: return "cache_clean"; + case V3D_CPU: return "cpu"; + } + return "UNKNOWN"; +} + +struct v3d_stats { + u64 start_ns; + u64 enabled_ns; + u64 jobs_completed; + + /* + * This seqcount is used to protect the access to the GPU stats + * variables. It must be used as, while we are reading the stats, + * IRQs can happen and the stats can be updated. + */ + seqcount_t lock; +}; struct v3d_queue_state { struct drm_gpu_scheduler sched; u64 fence_context; u64 emit_seqno; + + /* Stores the GPU stats for this queue in the global context. */ + struct v3d_stats stats; + + /* Currently active job for this queue */ + struct v3d_job *active_job; + spinlock_t queue_lock; + /* Protect dma fence for signalling job completion */ + spinlock_t fence_lock; +}; + +/* Performance monitor object. The perform lifetime is controlled by userspace + * using perfmon related ioctls. A perfmon can be attached to a submit_cl + * request, and when this is the case, HW perf counters will be activated just + * before the submit_cl is submitted to the GPU and disabled when the job is + * done. This way, only events related to a specific job will be counted. + */ +struct v3d_perfmon { + /* Tracks the number of users of the perfmon, when this counter reaches + * zero the perfmon is destroyed. + */ + refcount_t refcnt; + + /* Protects perfmon stop, as it can be invoked from multiple places. */ + struct mutex lock; + + /* Number of counters activated in this perfmon instance + * (should be less than DRM_V3D_MAX_PERF_COUNTERS). + */ + u8 ncounters; + + /* Events counted by the HW perf counters. */ + u8 counters[DRM_V3D_MAX_PERF_COUNTERS]; + + /* Storage for counter values. Counters are incremented by the + * HW perf counter values every time the perfmon is attached + * to a GPU job. This way, perfmon users don't have to + * retrieve the results after each job if they want to track + * events covering several submissions. Note that counter + * values can't be reset, but you can fake a reset by + * destroying the perfmon and creating a new one. + */ + u64 values[] __counted_by(ncounters); +}; + +enum v3d_gen { + V3D_GEN_33 = 33, + V3D_GEN_41 = 41, + V3D_GEN_42 = 42, + V3D_GEN_71 = 71, +}; + +enum v3d_irq { + V3D_CORE_IRQ, + V3D_HUB_IRQ, + V3D_MAX_IRQS, }; struct v3d_dev { struct drm_device drm; - /* Short representation (e.g. 33, 41) of the V3D tech version - * and revision. - */ - int ver; + /* Short representation (e.g. 33, 41) of the V3D tech version */ + enum v3d_gen ver; + + /* Short representation (e.g. 5, 6) of the V3D tech revision */ + int rev; + + bool single_irq_line; + + int irq[V3D_MAX_IRQS]; + + struct v3d_perfmon_info perfmon_info; - struct device *dev; - struct platform_device *pdev; void __iomem *hub_regs; void __iomem *core_regs[3]; void __iomem *bridge_regs; void __iomem *gca_regs; + void __iomem *sms_regs; struct clk *clk; + struct reset_control *reset; /* Virtual and DMA addresses of the single shared page table. */ volatile u32 *pt; @@ -53,6 +146,8 @@ struct v3d_dev { */ void *mmu_scratch; dma_addr_t mmu_scratch_paddr; + /* virtual address bits from V3D to the MMU. */ + int va_width; /* Number of V3D cores. */ u32 cores; @@ -63,18 +158,17 @@ struct v3d_dev { struct drm_mm mm; spinlock_t mm_lock; - struct work_struct overflow_mem_work; + /* + * tmpfs instance used for shmem backed objects + */ + struct vfsmount *gemfs; - struct v3d_exec_info *bin_job; - struct v3d_exec_info *render_job; - struct v3d_tfu_job *tfu_job; + struct work_struct overflow_mem_work; struct v3d_queue_state queue[V3D_MAX_QUEUES]; - /* Spinlock used to synchronize the overflow memory - * management against bin job submission. - */ - spinlock_t job_lock; + /* Used to track the active perfmon if any. */ + struct v3d_perfmon *active_perfmon; /* Protects bo_stats */ struct mutex bo_lock; @@ -90,53 +184,75 @@ struct v3d_dev { */ struct mutex sched_lock; + /* Lock taken during a cache clean and when initiating an L2 + * flush, to keep L2 flushes from interfering with the + * synchronous L2 cleans. + */ + struct mutex cache_clean_lock; + struct { u32 num_allocated; u32 pages_allocated; } bo_stats; + + /* To support a performance analysis tool in user space, we require + * a single, globally configured performance monitor (perfmon) for + * all jobs. + */ + struct v3d_perfmon *global_perfmon; + + /* Global reset counter. The counter must be incremented when + * a GPU reset happens. It must be protected by @reset_lock. + */ + unsigned int reset_counter; }; static inline struct v3d_dev * to_v3d_dev(struct drm_device *dev) { - return (struct v3d_dev *)dev->dev_private; + return container_of(dev, struct v3d_dev, drm); +} + +static inline bool +v3d_has_csd(struct v3d_dev *v3d) +{ + return v3d->ver >= V3D_GEN_41; } +#define v3d_to_pdev(v3d) to_platform_device((v3d)->drm.dev) + /* The per-fd struct, which tracks the MMU mappings. */ struct v3d_file_priv { struct v3d_dev *v3d; + struct { + struct idr idr; + struct mutex lock; + } perfmon; + struct drm_sched_entity sched_entity[V3D_MAX_QUEUES]; -}; -/* Tracks a mapping of a BO into a per-fd address space */ -struct v3d_vma { - struct v3d_page_table *pt; - struct list_head list; /* entry in v3d_bo.vmas */ + /* Stores the GPU stats for a specific queue for this fd. */ + struct v3d_stats stats[V3D_MAX_QUEUES]; + + /* Per-fd reset counter, must be incremented when a job submitted + * by this fd causes a GPU reset. It must be protected by + * &struct v3d_dev->reset_lock. + */ + unsigned int reset_counter; }; struct v3d_bo { - struct drm_gem_object base; - - struct mutex lock; + struct drm_gem_shmem_object base; struct drm_mm_node node; - u32 pages_refcount; - struct page **pages; - struct sg_table *sgt; - void *vaddr; - - struct list_head vmas; /* list of v3d_vma */ - /* List entry for the BO's position in - * v3d_exec_info->unref_list + * v3d_render_job->unref_list */ struct list_head unref_head; - /* normally (resv == &_resv) except for imported bo's */ - struct reservation_object *resv; - struct reservation_object _resv; + void *vaddr; }; static inline struct v3d_bo * @@ -168,101 +284,254 @@ to_v3d_fence(struct dma_fence *fence) #define V3D_GCA_READ(offset) readl(v3d->gca_regs + offset) #define V3D_GCA_WRITE(offset, val) writel(val, v3d->gca_regs + offset) +#define V3D_SMS_IDLE 0x0 +#define V3D_SMS_ISOLATING_FOR_RESET 0xa +#define V3D_SMS_RESETTING 0xb +#define V3D_SMS_ISOLATING_FOR_POWER_OFF 0xc +#define V3D_SMS_POWER_OFF_STATE 0xd + +#define V3D_SMS_READ(offset) readl(v3d->sms_regs + (offset)) +#define V3D_SMS_WRITE(offset, val) writel(val, v3d->sms_regs + (offset)) + #define V3D_CORE_READ(core, offset) readl(v3d->core_regs[core] + offset) #define V3D_CORE_WRITE(core, offset, val) writel(val, v3d->core_regs[core] + offset) struct v3d_job { struct drm_sched_job base; - struct v3d_exec_info *exec; + struct kref refcount; + + struct v3d_dev *v3d; - /* An optional fence userspace can pass in for the job to depend on. */ - struct dma_fence *in_fence; + /* This is the array of BOs that were looked up at the start + * of submission. + */ + struct drm_gem_object **bo; + u32 bo_count; /* v3d fence to be signaled by IRQ handler when the job is complete. */ + struct dma_fence *irq_fence; + + /* scheduler fence for when the job is considered complete and + * the BO reservations can be released. + */ struct dma_fence *done_fence; + /* Pointer to a performance monitor object if the user requested it, + * NULL otherwise. + */ + struct v3d_perfmon *perfmon; + + /* File descriptor of the process that submitted the job that could be used + * to collect per-process information about the GPU. + */ + struct v3d_file_priv *file_priv; + + /* Callback for the freeing of the job on refcount going to 0. */ + void (*free)(struct kref *ref); +}; + +struct v3d_bin_job { + struct v3d_job base; + /* GPU virtual addresses of the start/end of the CL job. */ u32 start, end; u32 timedout_ctca, timedout_ctra; -}; -struct v3d_exec_info { - struct v3d_dev *v3d; - - struct v3d_job bin, render; + /* Corresponding render job, for attaching our overflow memory. */ + struct v3d_render_job *render; - /* Fence for when the scheduler considers the binner to be - * done, for render to depend on. - */ - struct dma_fence *bin_done_fence; + /* Submitted tile memory allocation start/size, tile state. */ + u32 qma, qms, qts; +}; - /* Fence for when the scheduler considers the render to be - * done, for when the BOs reservations should be complete. - */ - struct dma_fence *render_done_fence; +struct v3d_render_job { + struct v3d_job base; - struct kref refcount; + /* GPU virtual addresses of the start/end of the CL job. */ + u32 start, end; - /* This is the array of BOs that were looked up at the start of exec. */ - struct v3d_bo **bo; - u32 bo_count; + u32 timedout_ctca, timedout_ctra; /* List of overflow BOs used in the job that need to be * released once the job is complete. */ struct list_head unref_list; - - /* Submitted tile memory allocation start/size, tile state. */ - u32 qma, qms, qts; }; struct v3d_tfu_job { - struct drm_sched_job base; + struct v3d_job base; struct drm_v3d_submit_tfu args; +}; - /* An optional fence userspace can pass in for the job to depend on. */ - struct dma_fence *in_fence; +struct v3d_csd_job { + struct v3d_job base; - /* v3d fence to be signaled by IRQ handler when the job is complete. */ - struct dma_fence *done_fence; + u32 timedout_batches; - struct v3d_dev *v3d; + struct drm_v3d_submit_csd args; +}; - struct kref refcount; +enum v3d_cpu_job_type { + V3D_CPU_JOB_TYPE_INDIRECT_CSD = 1, + V3D_CPU_JOB_TYPE_TIMESTAMP_QUERY, + V3D_CPU_JOB_TYPE_RESET_TIMESTAMP_QUERY, + V3D_CPU_JOB_TYPE_COPY_TIMESTAMP_QUERY, + V3D_CPU_JOB_TYPE_RESET_PERFORMANCE_QUERY, + V3D_CPU_JOB_TYPE_COPY_PERFORMANCE_QUERY, +}; + +struct v3d_timestamp_query { + /* Offset of this query in the timestamp BO for its value. */ + u32 offset; - /* This is the array of BOs that were looked up at the start of exec. */ - struct v3d_bo *bo[4]; + /* Syncobj that indicates the timestamp availability */ + struct drm_syncobj *syncobj; +}; + +struct v3d_performance_query { + /* Performance monitor IDs for this query */ + u32 *kperfmon_ids; + + /* Syncobj that indicates the query availability */ + struct drm_syncobj *syncobj; +}; + +struct v3d_indirect_csd_info { + /* Indirect CSD */ + struct v3d_csd_job *job; + + /* Clean cache job associated to the Indirect CSD job */ + struct v3d_job *clean_job; + + /* Offset within the BO where the workgroup counts are stored */ + u32 offset; + + /* Workgroups size */ + u32 wg_size; + + /* Indices of the uniforms with the workgroup dispatch counts + * in the uniform stream. + */ + u32 wg_uniform_offsets[3]; + + /* Indirect BO */ + struct drm_gem_object *indirect; + + /* Context of the Indirect CSD job */ + struct ww_acquire_ctx acquire_ctx; +}; + +struct v3d_timestamp_query_info { + struct v3d_timestamp_query *queries; + + u32 count; +}; + +struct v3d_performance_query_info { + struct v3d_performance_query *queries; + + /* Number of performance queries */ + u32 count; + + /* Number of performance monitors related to that query pool */ + u32 nperfmons; + + /* Number of performance counters related to that query pool */ + u32 ncounters; +}; + +struct v3d_copy_query_results_info { + /* Define if should write to buffer using 64 or 32 bits */ + bool do_64bit; + + /* Define if it can write to buffer even if the query is not available */ + bool do_partial; + + /* Define if it should write availability bit to buffer */ + bool availability_bit; + + /* Offset of the copy buffer in the BO */ + u32 offset; + + /* Stride of the copy buffer in the BO */ + u32 stride; +}; + +struct v3d_cpu_job { + struct v3d_job base; + + enum v3d_cpu_job_type job_type; + + struct v3d_indirect_csd_info indirect_csd; + + struct v3d_timestamp_query_info timestamp_query; + + struct v3d_copy_query_results_info copy; + + struct v3d_performance_query_info performance_query; +}; + +typedef void (*v3d_cpu_job_fn)(struct v3d_cpu_job *); + +struct v3d_submit_outsync { + struct drm_syncobj *syncobj; +}; + +struct v3d_submit_ext { + u32 flags; + u32 wait_stage; + + u32 in_sync_count; + u64 in_syncs; + + u32 out_sync_count; + struct v3d_submit_outsync *out_syncs; }; /** - * _wait_for - magic (register) wait macro + * __wait_for - magic wait macro * - * Does the right thing for modeset paths when run under kdgb or similar atomic - * contexts. Note that it's important that we check the condition again after - * having timed out, since the timeout could be due to preemption or similar and - * we've never had a chance to check the condition before the timeout. + * Macro to help avoid open coding check/wait/timeout patterns. Note that it's + * important that we check the condition again after having timed out, since the + * timeout could be due to preemption or similar and we've never had a chance to + * check the condition before the timeout. */ -#define wait_for(COND, MS) ({ \ - unsigned long timeout__ = jiffies + msecs_to_jiffies(MS) + 1; \ - int ret__ = 0; \ - while (!(COND)) { \ - if (time_after(jiffies, timeout__)) { \ - if (!(COND)) \ - ret__ = -ETIMEDOUT; \ +#define __wait_for(OP, COND, US, Wmin, Wmax) ({ \ + const ktime_t end__ = ktime_add_ns(ktime_get_raw(), 1000ll * (US)); \ + long wait__ = (Wmin); /* recommended min for usleep is 10 us */ \ + int ret__; \ + might_sleep(); \ + for (;;) { \ + const bool expired__ = ktime_after(ktime_get_raw(), end__); \ + OP; \ + /* Guarantee COND check prior to timeout */ \ + barrier(); \ + if (COND) { \ + ret__ = 0; \ break; \ } \ - msleep(1); \ + if (expired__) { \ + ret__ = -ETIMEDOUT; \ + break; \ + } \ + usleep_range(wait__, wait__ * 2); \ + if (wait__ < (Wmax)) \ + wait__ <<= 1; \ } \ ret__; \ }) +#define _wait_for(COND, US, Wmin, Wmax) __wait_for(, (COND), (US), (Wmin), \ + (Wmax)) +#define wait_for(COND, MS) _wait_for((COND), (MS) * 1000, 10, 1000) + static inline unsigned long nsecs_to_jiffies_timeout(const u64 n) { /* nsecs_to_jiffies64() does not guard against overflow */ - if (NSEC_PER_SEC % HZ && + if ((NSEC_PER_SEC % HZ) != 0 && div_u64(n, NSEC_PER_SEC) >= MAX_JIFFY_OFFSET / HZ) return MAX_JIFFY_OFFSET; @@ -270,59 +539,102 @@ static inline unsigned long nsecs_to_jiffies_timeout(const u64 n) } /* v3d_bo.c */ +struct drm_gem_object *v3d_create_object(struct drm_device *dev, size_t size); void v3d_free_object(struct drm_gem_object *gem_obj); struct v3d_bo *v3d_bo_create(struct drm_device *dev, struct drm_file *file_priv, size_t size); +void v3d_get_bo_vaddr(struct v3d_bo *bo); +void v3d_put_bo_vaddr(struct v3d_bo *bo); int v3d_create_bo_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); int v3d_mmap_bo_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); int v3d_get_bo_offset_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); -vm_fault_t v3d_gem_fault(struct vm_fault *vmf); -int v3d_mmap(struct file *filp, struct vm_area_struct *vma); -struct reservation_object *v3d_prime_res_obj(struct drm_gem_object *obj); -int v3d_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma); -struct sg_table *v3d_prime_get_sg_table(struct drm_gem_object *obj); +int v3d_wait_bo_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv); struct drm_gem_object *v3d_prime_import_sg_table(struct drm_device *dev, struct dma_buf_attachment *attach, struct sg_table *sgt); /* v3d_debugfs.c */ -int v3d_debugfs_init(struct drm_minor *minor); +void v3d_debugfs_init(struct drm_minor *minor); + +/* v3d_drv.c */ +void v3d_get_stats(const struct v3d_stats *stats, u64 timestamp, + u64 *active_runtime, u64 *jobs_completed); /* v3d_fence.c */ extern const struct dma_fence_ops v3d_fence_ops; -struct dma_fence *v3d_fence_create(struct v3d_dev *v3d, enum v3d_queue queue); +struct dma_fence *v3d_fence_create(struct v3d_dev *v3d, enum v3d_queue q); /* v3d_gem.c */ int v3d_gem_init(struct drm_device *dev); void v3d_gem_destroy(struct drm_device *dev); +void v3d_reset_sms(struct v3d_dev *v3d); +void v3d_reset(struct v3d_dev *v3d); +void v3d_invalidate_caches(struct v3d_dev *v3d); +void v3d_clean_caches(struct v3d_dev *v3d); + +/* v3d_gemfs.c */ +extern bool super_pages; +void v3d_gemfs_init(struct v3d_dev *v3d); +void v3d_gemfs_fini(struct v3d_dev *v3d); + +/* v3d_submit.c */ +void v3d_job_cleanup(struct v3d_job *job); +void v3d_job_put(struct v3d_job *job); int v3d_submit_cl_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); int v3d_submit_tfu_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); -int v3d_wait_bo_ioctl(struct drm_device *dev, void *data, - struct drm_file *file_priv); -void v3d_exec_put(struct v3d_exec_info *exec); -void v3d_tfu_job_put(struct v3d_tfu_job *exec); -void v3d_reset(struct v3d_dev *v3d); -void v3d_invalidate_caches(struct v3d_dev *v3d); -void v3d_flush_caches(struct v3d_dev *v3d); +int v3d_submit_csd_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv); +int v3d_submit_cpu_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv); /* v3d_irq.c */ -void v3d_irq_init(struct v3d_dev *v3d); +int v3d_irq_init(struct v3d_dev *v3d); void v3d_irq_enable(struct v3d_dev *v3d); void v3d_irq_disable(struct v3d_dev *v3d); void v3d_irq_reset(struct v3d_dev *v3d); /* v3d_mmu.c */ -int v3d_mmu_get_offset(struct drm_file *file_priv, struct v3d_bo *bo, - u32 *offset); +int v3d_mmu_flush_all(struct v3d_dev *v3d); int v3d_mmu_set_page_table(struct v3d_dev *v3d); void v3d_mmu_insert_ptes(struct v3d_bo *bo); void v3d_mmu_remove_ptes(struct v3d_bo *bo); /* v3d_sched.c */ +void v3d_timestamp_query_info_free(struct v3d_timestamp_query_info *query_info, + unsigned int count); +void v3d_performance_query_info_free(struct v3d_performance_query_info *query_info, + unsigned int count); +void v3d_job_update_stats(struct v3d_job *job, enum v3d_queue q); int v3d_sched_init(struct v3d_dev *v3d); void v3d_sched_fini(struct v3d_dev *v3d); + +/* v3d_perfmon.c */ +void v3d_perfmon_init(struct v3d_dev *v3d); +void v3d_perfmon_get(struct v3d_perfmon *perfmon); +void v3d_perfmon_put(struct v3d_perfmon *perfmon); +void v3d_perfmon_start(struct v3d_dev *v3d, struct v3d_perfmon *perfmon); +void v3d_perfmon_stop(struct v3d_dev *v3d, struct v3d_perfmon *perfmon, + bool capture); +struct v3d_perfmon *v3d_perfmon_find(struct v3d_file_priv *v3d_priv, int id); +void v3d_perfmon_open_file(struct v3d_file_priv *v3d_priv); +void v3d_perfmon_close_file(struct v3d_file_priv *v3d_priv); +int v3d_perfmon_create_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv); +int v3d_perfmon_destroy_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv); +int v3d_perfmon_get_values_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv); +int v3d_perfmon_get_counter_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv); +int v3d_perfmon_set_global_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv); + +/* v3d_sysfs.c */ +int v3d_sysfs_init(struct device *dev); +void v3d_sysfs_destroy(struct device *dev); |