| /* |
| * Copyright (C) 2015 Broadcom |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include "drmP.h" |
| #include "drm_gem_cma_helper.h" |
| #include "drm_gem_cma_helper.h" |
| |
| #include <linux/reservation.h> |
| #include <drm/drm_encoder.h> |
| |
| struct vc4_dev { |
| struct drm_device *dev; |
| |
| struct vc4_hdmi *hdmi; |
| struct vc4_hvs *hvs; |
| struct vc4_v3d *v3d; |
| struct vc4_dpi *dpi; |
| struct vc4_dsi *dsi1; |
| struct vc4_vec *vec; |
| |
| struct drm_fbdev_cma *fbdev; |
| |
| struct vc4_hang_state *hang_state; |
| |
| /* The kernel-space BO cache. Tracks buffers that have been |
| * unreferenced by all other users (refcounts of 0!) but not |
| * yet freed, so we can do cheap allocations. |
| */ |
| struct vc4_bo_cache { |
| /* Array of list heads for entries in the BO cache, |
| * based on number of pages, so we can do O(1) lookups |
| * in the cache when allocating. |
| */ |
| struct list_head *size_list; |
| uint32_t size_list_size; |
| |
| /* List of all BOs in the cache, ordered by age, so we |
| * can do O(1) lookups when trying to free old |
| * buffers. |
| */ |
| struct list_head time_list; |
| struct work_struct time_work; |
| struct timer_list time_timer; |
| } bo_cache; |
| |
| struct vc4_bo_stats { |
| u32 num_allocated; |
| u32 size_allocated; |
| u32 num_cached; |
| u32 size_cached; |
| } bo_stats; |
| |
| /* Protects bo_cache and the BO stats. */ |
| struct mutex bo_lock; |
| |
| uint64_t dma_fence_context; |
| |
| /* Sequence number for the last job queued in bin_job_list. |
| * Starts at 0 (no jobs emitted). |
| */ |
| uint64_t emit_seqno; |
| |
| /* Sequence number for the last completed job on the GPU. |
| * Starts at 0 (no jobs completed). |
| */ |
| uint64_t finished_seqno; |
| |
| /* List of all struct vc4_exec_info for jobs to be executed in |
| * the binner. The first job in the list is the one currently |
| * programmed into ct0ca for execution. |
| */ |
| struct list_head bin_job_list; |
| |
| /* List of all struct vc4_exec_info for jobs that have |
| * completed binning and are ready for rendering. The first |
| * job in the list is the one currently programmed into ct1ca |
| * for execution. |
| */ |
| struct list_head render_job_list; |
| |
| /* List of the finished vc4_exec_infos waiting to be freed by |
| * job_done_work. |
| */ |
| struct list_head job_done_list; |
| /* Spinlock used to synchronize the job_list and seqno |
| * accesses between the IRQ handler and GEM ioctls. |
| */ |
| spinlock_t job_lock; |
| wait_queue_head_t job_wait_queue; |
| struct work_struct job_done_work; |
| |
| /* List of struct vc4_seqno_cb for callbacks to be made from a |
| * workqueue when the given seqno is passed. |
| */ |
| struct list_head seqno_cb_list; |
| |
| /* The binner overflow memory that's currently set up in |
| * BPOA/BPOS registers. When overflow occurs and a new one is |
| * allocated, the previous one will be moved to |
| * vc4->current_exec's free list. |
| */ |
| struct vc4_bo *overflow_mem; |
| struct work_struct overflow_mem_work; |
| |
| int power_refcount; |
| |
| /* Mutex controlling the power refcount. */ |
| struct mutex power_lock; |
| |
| struct { |
| struct timer_list timer; |
| struct work_struct reset_work; |
| } hangcheck; |
| |
| struct semaphore async_modeset; |
| }; |
| |
| static inline struct vc4_dev * |
| to_vc4_dev(struct drm_device *dev) |
| { |
| return (struct vc4_dev *)dev->dev_private; |
| } |
| |
| struct vc4_bo { |
| struct drm_gem_cma_object base; |
| |
| /* seqno of the last job to render using this BO. */ |
| uint64_t seqno; |
| |
| /* seqno of the last job to use the RCL to write to this BO. |
| * |
| * Note that this doesn't include binner overflow memory |
| * writes. |
| */ |
| uint64_t write_seqno; |
| |
| /* List entry for the BO's position in either |
| * vc4_exec_info->unref_list or vc4_dev->bo_cache.time_list |
| */ |
| struct list_head unref_head; |
| |
| /* Time in jiffies when the BO was put in vc4->bo_cache. */ |
| unsigned long free_time; |
| |
| /* List entry for the BO's position in vc4_dev->bo_cache.size_list */ |
| struct list_head size_head; |
| |
| /* Struct for shader validation state, if created by |
| * DRM_IOCTL_VC4_CREATE_SHADER_BO. |
| */ |
| struct vc4_validated_shader_info *validated_shader; |
| |
| /* normally (resv == &_resv) except for imported bo's */ |
| struct reservation_object *resv; |
| struct reservation_object _resv; |
| }; |
| |
| static inline struct vc4_bo * |
| to_vc4_bo(struct drm_gem_object *bo) |
| { |
| return (struct vc4_bo *)bo; |
| } |
| |
| struct vc4_fence { |
| struct dma_fence base; |
| struct drm_device *dev; |
| /* vc4 seqno for signaled() test */ |
| uint64_t seqno; |
| }; |
| |
| static inline struct vc4_fence * |
| to_vc4_fence(struct dma_fence *fence) |
| { |
| return (struct vc4_fence *)fence; |
| } |
| |
| struct vc4_seqno_cb { |
| struct work_struct work; |
| uint64_t seqno; |
| void (*func)(struct vc4_seqno_cb *cb); |
| }; |
| |
| struct vc4_v3d { |
| struct vc4_dev *vc4; |
| struct platform_device *pdev; |
| void __iomem *regs; |
| }; |
| |
| struct vc4_hvs { |
| struct platform_device *pdev; |
| void __iomem *regs; |
| u32 __iomem *dlist; |
| |
| /* Memory manager for CRTCs to allocate space in the display |
| * list. Units are dwords. |
| */ |
| struct drm_mm dlist_mm; |
| /* Memory manager for the LBM memory used by HVS scaling. */ |
| struct drm_mm lbm_mm; |
| spinlock_t mm_lock; |
| |
| struct drm_mm_node mitchell_netravali_filter; |
| }; |
| |
| struct vc4_plane { |
| struct drm_plane base; |
| }; |
| |
| static inline struct vc4_plane * |
| to_vc4_plane(struct drm_plane *plane) |
| { |
| return (struct vc4_plane *)plane; |
| } |
| |
| enum vc4_encoder_type { |
| VC4_ENCODER_TYPE_NONE, |
| VC4_ENCODER_TYPE_HDMI, |
| VC4_ENCODER_TYPE_VEC, |
| VC4_ENCODER_TYPE_DSI0, |
| VC4_ENCODER_TYPE_DSI1, |
| VC4_ENCODER_TYPE_SMI, |
| VC4_ENCODER_TYPE_DPI, |
| }; |
| |
| struct vc4_encoder { |
| struct drm_encoder base; |
| enum vc4_encoder_type type; |
| u32 clock_select; |
| }; |
| |
| static inline struct vc4_encoder * |
| to_vc4_encoder(struct drm_encoder *encoder) |
| { |
| return container_of(encoder, struct vc4_encoder, base); |
| } |
| |
| #define V3D_READ(offset) readl(vc4->v3d->regs + offset) |
| #define V3D_WRITE(offset, val) writel(val, vc4->v3d->regs + offset) |
| #define HVS_READ(offset) readl(vc4->hvs->regs + offset) |
| #define HVS_WRITE(offset, val) writel(val, vc4->hvs->regs + offset) |
| |
| struct vc4_exec_info { |
| /* Sequence number for this bin/render job. */ |
| uint64_t seqno; |
| |
| /* Latest write_seqno of any BO that binning depends on. */ |
| uint64_t bin_dep_seqno; |
| |
| struct dma_fence *fence; |
| |
| /* Last current addresses the hardware was processing when the |
| * hangcheck timer checked on us. |
| */ |
| uint32_t last_ct0ca, last_ct1ca; |
| |
| /* Kernel-space copy of the ioctl arguments */ |
| struct drm_vc4_submit_cl *args; |
| |
| /* This is the array of BOs that were looked up at the start of exec. |
| * Command validation will use indices into this array. |
| */ |
| struct drm_gem_cma_object **bo; |
| uint32_t bo_count; |
| |
| /* List of BOs that are being written by the RCL. Other than |
| * the binner temporary storage, this is all the BOs written |
| * by the job. |
| */ |
| struct drm_gem_cma_object *rcl_write_bo[4]; |
| uint32_t rcl_write_bo_count; |
| |
| /* Pointers for our position in vc4->job_list */ |
| struct list_head head; |
| |
| /* List of other BOs used in the job that need to be released |
| * once the job is complete. |
| */ |
| struct list_head unref_list; |
| |
| /* Current unvalidated indices into @bo loaded by the non-hardware |
| * VC4_PACKET_GEM_HANDLES. |
| */ |
| uint32_t bo_index[2]; |
| |
| /* This is the BO where we store the validated command lists, shader |
| * records, and uniforms. |
| */ |
| struct drm_gem_cma_object *exec_bo; |
| |
| /** |
| * This tracks the per-shader-record state (packet 64) that |
| * determines the length of the shader record and the offset |
| * it's expected to be found at. It gets read in from the |
| * command lists. |
| */ |
| struct vc4_shader_state { |
| uint32_t addr; |
| /* Maximum vertex index referenced by any primitive using this |
| * shader state. |
| */ |
| uint32_t max_index; |
| } *shader_state; |
| |
| /** How many shader states the user declared they were using. */ |
| uint32_t shader_state_size; |
| /** How many shader state records the validator has seen. */ |
| uint32_t shader_state_count; |
| |
| bool found_tile_binning_mode_config_packet; |
| bool found_start_tile_binning_packet; |
| bool found_increment_semaphore_packet; |
| bool found_flush; |
| uint8_t bin_tiles_x, bin_tiles_y; |
| struct drm_gem_cma_object *tile_bo; |
| uint32_t tile_alloc_offset; |
| |
| /** |
| * Computed addresses pointing into exec_bo where we start the |
| * bin thread (ct0) and render thread (ct1). |
| */ |
| uint32_t ct0ca, ct0ea; |
| uint32_t ct1ca, ct1ea; |
| |
| /* Pointer to the unvalidated bin CL (if present). */ |
| void *bin_u; |
| |
| /* Pointers to the shader recs. These paddr gets incremented as CL |
| * packets are relocated in validate_gl_shader_state, and the vaddrs |
| * (u and v) get incremented and size decremented as the shader recs |
| * themselves are validated. |
| */ |
| void *shader_rec_u; |
| void *shader_rec_v; |
| uint32_t shader_rec_p; |
| uint32_t shader_rec_size; |
| |
| /* Pointers to the uniform data. These pointers are incremented, and |
| * size decremented, as each batch of uniforms is uploaded. |
| */ |
| void *uniforms_u; |
| void *uniforms_v; |
| uint32_t uniforms_p; |
| uint32_t uniforms_size; |
| }; |
| |
| static inline struct vc4_exec_info * |
| vc4_first_bin_job(struct vc4_dev *vc4) |
| { |
| return list_first_entry_or_null(&vc4->bin_job_list, |
| struct vc4_exec_info, head); |
| } |
| |
| static inline struct vc4_exec_info * |
| vc4_first_render_job(struct vc4_dev *vc4) |
| { |
| return list_first_entry_or_null(&vc4->render_job_list, |
| struct vc4_exec_info, head); |
| } |
| |
| static inline struct vc4_exec_info * |
| vc4_last_render_job(struct vc4_dev *vc4) |
| { |
| if (list_empty(&vc4->render_job_list)) |
| return NULL; |
| return list_last_entry(&vc4->render_job_list, |
| struct vc4_exec_info, head); |
| } |
| |
| /** |
| * struct vc4_texture_sample_info - saves the offsets into the UBO for texture |
| * setup parameters. |
| * |
| * This will be used at draw time to relocate the reference to the texture |
| * contents in p0, and validate that the offset combined with |
| * width/height/stride/etc. from p1 and p2/p3 doesn't sample outside the BO. |
| * Note that the hardware treats unprovided config parameters as 0, so not all |
| * of them need to be set up for every texure sample, and we'll store ~0 as |
| * the offset to mark the unused ones. |
| * |
| * See the VC4 3D architecture guide page 41 ("Texture and Memory Lookup Unit |
| * Setup") for definitions of the texture parameters. |
| */ |
| struct vc4_texture_sample_info { |
| bool is_direct; |
| uint32_t p_offset[4]; |
| }; |
| |
| /** |
| * struct vc4_validated_shader_info - information about validated shaders that |
| * needs to be used from command list validation. |
| * |
| * For a given shader, each time a shader state record references it, we need |
| * to verify that the shader doesn't read more uniforms than the shader state |
| * record's uniform BO pointer can provide, and we need to apply relocations |
| * and validate the shader state record's uniforms that define the texture |
| * samples. |
| */ |
| struct vc4_validated_shader_info { |
| uint32_t uniforms_size; |
| uint32_t uniforms_src_size; |
| uint32_t num_texture_samples; |
| struct vc4_texture_sample_info *texture_samples; |
| |
| uint32_t num_uniform_addr_offsets; |
| uint32_t *uniform_addr_offsets; |
| |
| bool is_threaded; |
| }; |
| |
| /** |
| * _wait_for - magic (register) 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. |
| */ |
| #define _wait_for(COND, MS, W) ({ \ |
| unsigned long timeout__ = jiffies + msecs_to_jiffies(MS) + 1; \ |
| int ret__ = 0; \ |
| while (!(COND)) { \ |
| if (time_after(jiffies, timeout__)) { \ |
| if (!(COND)) \ |
| ret__ = -ETIMEDOUT; \ |
| break; \ |
| } \ |
| if (W && drm_can_sleep()) { \ |
| msleep(W); \ |
| } else { \ |
| cpu_relax(); \ |
| } \ |
| } \ |
| ret__; \ |
| }) |
| |
| #define wait_for(COND, MS) _wait_for(COND, MS, 1) |
| |
| /* vc4_bo.c */ |
| struct drm_gem_object *vc4_create_object(struct drm_device *dev, size_t size); |
| void vc4_free_object(struct drm_gem_object *gem_obj); |
| struct vc4_bo *vc4_bo_create(struct drm_device *dev, size_t size, |
| bool from_cache); |
| int vc4_dumb_create(struct drm_file *file_priv, |
| struct drm_device *dev, |
| struct drm_mode_create_dumb *args); |
| struct dma_buf *vc4_prime_export(struct drm_device *dev, |
| struct drm_gem_object *obj, int flags); |
| int vc4_create_bo_ioctl(struct drm_device *dev, void *data, |
| struct drm_file *file_priv); |
| int vc4_create_shader_bo_ioctl(struct drm_device *dev, void *data, |
| struct drm_file *file_priv); |
| int vc4_mmap_bo_ioctl(struct drm_device *dev, void *data, |
| struct drm_file *file_priv); |
| int vc4_get_hang_state_ioctl(struct drm_device *dev, void *data, |
| struct drm_file *file_priv); |
| int vc4_mmap(struct file *filp, struct vm_area_struct *vma); |
| struct reservation_object *vc4_prime_res_obj(struct drm_gem_object *obj); |
| int vc4_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma); |
| struct drm_gem_object *vc4_prime_import_sg_table(struct drm_device *dev, |
| struct dma_buf_attachment *attach, |
| struct sg_table *sgt); |
| void *vc4_prime_vmap(struct drm_gem_object *obj); |
| void vc4_bo_cache_init(struct drm_device *dev); |
| void vc4_bo_cache_destroy(struct drm_device *dev); |
| int vc4_bo_stats_debugfs(struct seq_file *m, void *arg); |
| |
| /* vc4_crtc.c */ |
| extern struct platform_driver vc4_crtc_driver; |
| bool vc4_event_pending(struct drm_crtc *crtc); |
| int vc4_crtc_debugfs_regs(struct seq_file *m, void *arg); |
| int vc4_crtc_get_scanoutpos(struct drm_device *dev, unsigned int crtc_id, |
| unsigned int flags, int *vpos, int *hpos, |
| ktime_t *stime, ktime_t *etime, |
| const struct drm_display_mode *mode); |
| int vc4_crtc_get_vblank_timestamp(struct drm_device *dev, unsigned int crtc_id, |
| int *max_error, struct timeval *vblank_time, |
| unsigned flags); |
| |
| /* vc4_debugfs.c */ |
| int vc4_debugfs_init(struct drm_minor *minor); |
| |
| /* vc4_drv.c */ |
| void __iomem *vc4_ioremap_regs(struct platform_device *dev, int index); |
| |
| /* vc4_dpi.c */ |
| extern struct platform_driver vc4_dpi_driver; |
| int vc4_dpi_debugfs_regs(struct seq_file *m, void *unused); |
| |
| /* vc4_dsi.c */ |
| extern struct platform_driver vc4_dsi_driver; |
| int vc4_dsi_debugfs_regs(struct seq_file *m, void *unused); |
| |
| /* vc4_fence.c */ |
| extern const struct dma_fence_ops vc4_fence_ops; |
| |
| /* vc4_gem.c */ |
| void vc4_gem_init(struct drm_device *dev); |
| void vc4_gem_destroy(struct drm_device *dev); |
| int vc4_submit_cl_ioctl(struct drm_device *dev, void *data, |
| struct drm_file *file_priv); |
| int vc4_wait_seqno_ioctl(struct drm_device *dev, void *data, |
| struct drm_file *file_priv); |
| int vc4_wait_bo_ioctl(struct drm_device *dev, void *data, |
| struct drm_file *file_priv); |
| void vc4_submit_next_bin_job(struct drm_device *dev); |
| void vc4_submit_next_render_job(struct drm_device *dev); |
| void vc4_move_job_to_render(struct drm_device *dev, struct vc4_exec_info *exec); |
| int vc4_wait_for_seqno(struct drm_device *dev, uint64_t seqno, |
| uint64_t timeout_ns, bool interruptible); |
| void vc4_job_handle_completed(struct vc4_dev *vc4); |
| int vc4_queue_seqno_cb(struct drm_device *dev, |
| struct vc4_seqno_cb *cb, uint64_t seqno, |
| void (*func)(struct vc4_seqno_cb *cb)); |
| |
| /* vc4_hdmi.c */ |
| extern struct platform_driver vc4_hdmi_driver; |
| int vc4_hdmi_debugfs_regs(struct seq_file *m, void *unused); |
| |
| /* vc4_hdmi.c */ |
| extern struct platform_driver vc4_vec_driver; |
| int vc4_vec_debugfs_regs(struct seq_file *m, void *unused); |
| |
| /* vc4_irq.c */ |
| irqreturn_t vc4_irq(int irq, void *arg); |
| void vc4_irq_preinstall(struct drm_device *dev); |
| int vc4_irq_postinstall(struct drm_device *dev); |
| void vc4_irq_uninstall(struct drm_device *dev); |
| void vc4_irq_reset(struct drm_device *dev); |
| |
| /* vc4_hvs.c */ |
| extern struct platform_driver vc4_hvs_driver; |
| void vc4_hvs_dump_state(struct drm_device *dev); |
| int vc4_hvs_debugfs_regs(struct seq_file *m, void *unused); |
| |
| /* vc4_kms.c */ |
| int vc4_kms_load(struct drm_device *dev); |
| |
| /* vc4_plane.c */ |
| struct drm_plane *vc4_plane_init(struct drm_device *dev, |
| enum drm_plane_type type); |
| u32 vc4_plane_write_dlist(struct drm_plane *plane, u32 __iomem *dlist); |
| u32 vc4_plane_dlist_size(const struct drm_plane_state *state); |
| void vc4_plane_async_set_fb(struct drm_plane *plane, |
| struct drm_framebuffer *fb); |
| |
| /* vc4_v3d.c */ |
| extern struct platform_driver vc4_v3d_driver; |
| int vc4_v3d_debugfs_ident(struct seq_file *m, void *unused); |
| int vc4_v3d_debugfs_regs(struct seq_file *m, void *unused); |
| |
| /* vc4_validate.c */ |
| int |
| vc4_validate_bin_cl(struct drm_device *dev, |
| void *validated, |
| void *unvalidated, |
| struct vc4_exec_info *exec); |
| |
| int |
| vc4_validate_shader_recs(struct drm_device *dev, struct vc4_exec_info *exec); |
| |
| struct drm_gem_cma_object *vc4_use_bo(struct vc4_exec_info *exec, |
| uint32_t hindex); |
| |
| int vc4_get_rcl(struct drm_device *dev, struct vc4_exec_info *exec); |
| |
| bool vc4_check_tex_size(struct vc4_exec_info *exec, |
| struct drm_gem_cma_object *fbo, |
| uint32_t offset, uint8_t tiling_format, |
| uint32_t width, uint32_t height, uint8_t cpp); |
| |
| /* vc4_validate_shader.c */ |
| struct vc4_validated_shader_info * |
| vc4_validate_shader(struct drm_gem_cma_object *shader_obj); |