drm/etnaviv/etnaviv_drv.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /*
0003  * Copyright (C) 2015-2018 Etnaviv Project
0004  */
0005
0006 #ifndef __ETNAVIV_DRV_H__
0007 #define __ETNAVIV_DRV_H__
0008
0009 #include <linux/list.h>
0010 #include <linux/mm_types.h>
0011 #include <linux/sizes.h>
0012 #include <linux/time64.h>
0013 #include <linux/types.h>
0014
0015 #include <drm/drm_fb_helper.h>
0016 #include <drm/drm_gem.h>
0017 #include <drm/etnaviv_drm.h>
0018 #include <drm/gpu_scheduler.h>
0019
0020 struct etnaviv_cmdbuf;
0021 struct etnaviv_gpu;
0022 struct etnaviv_mmu;
0023 struct etnaviv_gem_object;
0024 struct etnaviv_gem_submit;
0025 struct etnaviv_iommu_global;
0026
0027 #define ETNAVIV_SOFTPIN_START_ADDRESS   SZ_4M /* must be >= SUBALLOC_SIZE */
0028
0029 struct etnaviv_file_private {
0030     struct etnaviv_iommu_context    *mmu;
0031     struct drm_sched_entity     sched_entity[ETNA_MAX_PIPES];
0032 };
0033
0034 struct etnaviv_drm_private {
0035     int num_gpus;
0036     struct etnaviv_gpu *gpu[ETNA_MAX_PIPES];
0037     gfp_t shm_gfp_mask;
0038
0039     struct etnaviv_cmdbuf_suballoc *cmdbuf_suballoc;
0040     struct etnaviv_iommu_global *mmu_global;
0041
0042     /* list of GEM objects: */
0043     struct mutex gem_lock;
0044     struct list_head gem_list;
0045 };
0046
0047 int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
0048         struct drm_file *file);
0049
0050 int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset);
0051 struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj);
0052 int etnaviv_gem_prime_vmap(struct drm_gem_object *obj, struct iosys_map *map);
0053 struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev,
0054     struct dma_buf_attachment *attach, struct sg_table *sg);
0055 int etnaviv_gem_prime_pin(struct drm_gem_object *obj);
0056 void etnaviv_gem_prime_unpin(struct drm_gem_object *obj);
0057 void *etnaviv_gem_vmap(struct drm_gem_object *obj);
0058 int etnaviv_gem_cpu_prep(struct drm_gem_object *obj, u32 op,
0059         struct drm_etnaviv_timespec *timeout);
0060 int etnaviv_gem_cpu_fini(struct drm_gem_object *obj);
0061 void etnaviv_gem_free_object(struct drm_gem_object *obj);
0062 int etnaviv_gem_new_handle(struct drm_device *dev, struct drm_file *file,
0063         u32 size, u32 flags, u32 *handle);
0064 int etnaviv_gem_new_userptr(struct drm_device *dev, struct drm_file *file,
0065     uintptr_t ptr, u32 size, u32 flags, u32 *handle);
0066 u16 etnaviv_buffer_init(struct etnaviv_gpu *gpu);
0067 u16 etnaviv_buffer_config_mmuv2(struct etnaviv_gpu *gpu, u32 mtlb_addr, u32 safe_addr);
0068 u16 etnaviv_buffer_config_pta(struct etnaviv_gpu *gpu, unsigned short id);
0069 void etnaviv_buffer_end(struct etnaviv_gpu *gpu);
0070 void etnaviv_sync_point_queue(struct etnaviv_gpu *gpu, unsigned int event);
0071 void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, u32 exec_state,
0072     struct etnaviv_iommu_context *mmu,
0073     unsigned int event, struct etnaviv_cmdbuf *cmdbuf);
0074 void etnaviv_validate_init(void);
0075 bool etnaviv_cmd_validate_one(struct etnaviv_gpu *gpu,
0076     u32 *stream, unsigned int size,
0077     struct drm_etnaviv_gem_submit_reloc *relocs, unsigned int reloc_size);
0078
0079 #ifdef CONFIG_DEBUG_FS
0080 void etnaviv_gem_describe_objects(struct etnaviv_drm_private *priv,
0081     struct seq_file *m);
0082 #endif
0083
0084 #define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
0085 #define VERB(fmt, ...) if (0) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
0086
0087 /*
0088  * Return the storage size of a structure with a variable length array.
0089  * The array is nelem elements of elem_size, where the base structure
0090  * is defined by base.  If the size overflows size_t, return zero.
0091  */
0092 static inline size_t size_vstruct(size_t nelem, size_t elem_size, size_t base)
0093 {
0094     if (elem_size && nelem > (SIZE_MAX - base) / elem_size)
0095         return 0;
0096     return base + nelem * elem_size;
0097 }
0098
0099 /*
0100  * Etnaviv timeouts are specified wrt CLOCK_MONOTONIC, not jiffies.
0101  * We need to calculate the timeout in terms of number of jiffies
0102  * between the specified timeout and the current CLOCK_MONOTONIC time.
0103  */
0104 static inline unsigned long etnaviv_timeout_to_jiffies(
0105     const struct drm_etnaviv_timespec *timeout)
0106 {
0107     struct timespec64 ts, to = {
0108         .tv_sec = timeout->tv_sec,
0109         .tv_nsec = timeout->tv_nsec,
0110     };
0111
0112     ktime_get_ts64(&ts);
0113
0114     /* timeouts before "now" have already expired */
0115     if (timespec64_compare(&to, &ts) <= 0)
0116         return 0;
0117
0118     ts = timespec64_sub(to, ts);
0119
0120     return timespec64_to_jiffies(&ts);
0121 }
0122
0123 #endif /* __ETNAVIV_DRV_H__ */