drivers/gpu/drm/etnaviv/etnaviv_drv.h

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/etnaviv/etnaviv_drv.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/etnaviv/etnaviv_drv.h
Extension
.h
Size
3844 bytes
Lines
121
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct etnaviv_file_private {
	int id;
	struct etnaviv_iommu_context	*mmu;
	struct drm_sched_entity		sched_entity[ETNA_MAX_PIPES];
};

struct etnaviv_drm_private {
	int num_gpus;
	struct etnaviv_gpu *gpu[ETNA_MAX_PIPES];
	gfp_t shm_gfp_mask;

	struct etnaviv_cmdbuf_suballoc *cmdbuf_suballoc;
	struct etnaviv_iommu_global *mmu_global;

	struct xarray active_contexts;
	u32 next_context_id;

	/* list of GEM objects: */
	struct mutex gem_lock;
	struct list_head gem_list;

	/* ppu flop reset data */
	struct etnaviv_cmdbuf *flop_reset_data_ppu;
};

int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
		struct drm_file *file);

int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset);
struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj);
int etnaviv_gem_prime_vmap(struct drm_gem_object *obj, struct iosys_map *map);
struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev,
	struct dma_buf_attachment *attach, struct sg_table *sg);
int etnaviv_gem_prime_pin(struct drm_gem_object *obj);
void etnaviv_gem_prime_unpin(struct drm_gem_object *obj);
void *etnaviv_gem_vmap(struct drm_gem_object *obj);
int etnaviv_gem_cpu_prep(struct drm_gem_object *obj, u32 op,
		struct drm_etnaviv_timespec *timeout);
int etnaviv_gem_cpu_fini(struct drm_gem_object *obj);
void etnaviv_gem_free_object(struct drm_gem_object *obj);
int etnaviv_gem_new_handle(struct drm_device *dev, struct drm_file *file,
		u32 size, u32 flags, u32 *handle);
int etnaviv_gem_new_userptr(struct drm_device *dev, struct drm_file *file,
	uintptr_t ptr, u32 size, u32 flags, u32 *handle);
u16 etnaviv_buffer_init(struct etnaviv_gpu *gpu);
u16 etnaviv_buffer_config_mmuv2(struct etnaviv_gpu *gpu, u32 mtlb_addr, u32 safe_addr);
u16 etnaviv_buffer_config_pta(struct etnaviv_gpu *gpu, unsigned short id);
void etnaviv_buffer_end(struct etnaviv_gpu *gpu);
void etnaviv_sync_point_queue(struct etnaviv_gpu *gpu, unsigned int event);
void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, u32 exec_state,
	struct etnaviv_iommu_context *mmu,
	unsigned int event, struct etnaviv_cmdbuf *cmdbuf);
void etnaviv_validate_init(void);
bool etnaviv_cmd_validate_one(struct etnaviv_gpu *gpu,
	u32 *stream, unsigned int size,
	struct drm_etnaviv_gem_submit_reloc *relocs, unsigned int reloc_size);

#ifdef CONFIG_DEBUG_FS
void etnaviv_gem_describe_objects(struct etnaviv_drm_private *priv,
	struct seq_file *m);
#endif

#define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
#define VERB(fmt, ...) if (0) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)

/*
 * Etnaviv timeouts are specified wrt CLOCK_MONOTONIC, not jiffies.
 * We need to calculate the timeout in terms of number of jiffies
 * between the specified timeout and the current CLOCK_MONOTONIC time.
 */
static inline unsigned long etnaviv_timeout_to_jiffies(
	const struct drm_etnaviv_timespec *timeout)
{
	struct timespec64 ts, to = {
		.tv_sec = timeout->tv_sec,
		.tv_nsec = timeout->tv_nsec,
	};

	ktime_get_ts64(&ts);

	/* timeouts before "now" have already expired */
	if (timespec64_compare(&to, &ts) <= 0)
		return 0;

	ts = timespec64_sub(to, ts);

	return timespec64_to_jiffies(&ts);
}

#endif /* __ETNAVIV_DRV_H__ */

Annotation

Implementation Notes