/*
* 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 <linux/reservation.h>
#include <drm/drmP.h>
#include <drm/drm_encoder.h>
#include <drm/drm_gem_cma_helper.h>
/* Don't forget to update vc4_bo.c: bo_type_names[] when adding to
* this.
*/
enum vc4_kernel_bo_type {
/* Any kernel allocation (gem_create_object hook) before it
* gets another type set.
*/
VC4_BO_TYPE_KERNEL,
VC4_BO_TYPE_V3D,
VC4_BO_TYPE_V3D_SHADER,
VC4_BO_TYPE_DUMB,
VC4_BO_TYPE_BIN,
VC4_BO_TYPE_RCL,
VC4_BO_TYPE_BCL,
VC4_BO_TYPE_KERNEL_CACHE,
VC4_BO_TYPE_COUNT
};
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;
u32 num_labels;
struct vc4_label {
const char *name;
u32 num_allocated;
u32 size_allocated;
} *bo_labels;
/* Protects bo_cache and bo_labels. */
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 memory used for storing binner tile alloc, tile state,
* and overflow memory allocations. This is freed when V3D
* powers down.
*/
struct vc4_bo *bin_bo;
/* Size of blocks allocated within bin_bo. */
uint32_t bin_alloc_size;
/* Bitmask of the bin_alloc_size chunks in bin_bo that are
* used.
*/
uint32_t bin_alloc_used;
/* Bitmask of the current bin_alloc used for overflow memory. */
uint32_t bin_alloc_overflow;
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;
bool t_format;
/* 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;
/* One of enum vc4_kernel_bo_type, or VC4_BO_TYPE_COUNT + i
* for user-allocated labels.
*/
int label;
};
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 clk *clk;
};
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;
/* Physical address of the start of the tile alloc array
* (where each tile's binned CL will start)
*/
uint32_t tile_alloc_offset;
/* Bitmask of which binner slots are freed when this job completes. */
uint32_t bin_slots;
/**
* 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, enum vc4_kernel_bo_type type);
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_set_tiling_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int vc4_get_tiling_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_label_bo_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);
int 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;
int vc4_crtc_debugfs_regs(struct seq_file *m, void *arg);
bool vc4_crtc_get_scanoutpos(struct drm_device *dev, unsigned int crtc_id,
bool in_vblank_irq, int *vpos, int *hpos,
ktime_t *stime, ktime_t *etime,
const struct drm_display_mode *mode);
/* 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_vec.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);
int vc4_v3d_get_bin_slot(struct vc4_dev *vc4);
/* 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);
