drivers/gpu/drm/etnaviv/etnaviv_drv.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (C) 2015-2018 Etnaviv Project
   4  */
   5
   6 #ifndef __ETNAVIV_DRV_H__
   7 #define __ETNAVIV_DRV_H__
   8
   9 #include <linux/list.h>
  10 #include <linux/mm_types.h>
  11 #include <linux/sizes.h>
  12 #include <linux/time64.h>
  13 #include <linux/types.h>
  14
  15 #include <drm/drm_fb_helper.h>
  16 #include <drm/drm_gem.h>
  17 #include <drm/etnaviv_drm.h>
  18 #include <drm/gpu_scheduler.h>
  19
  20 struct etnaviv_cmdbuf;
  21 struct etnaviv_gpu;
  22 struct etnaviv_mmu;
  23 struct etnaviv_gem_object;
  24 struct etnaviv_gem_submit;
  25 struct etnaviv_iommu_global;
  26
  27 #define ETNAVIV_SOFTPIN_START_ADDRESS   SZ_4M /* must be >= SUBALLOC_SIZE */
  28
  29 struct etnaviv_file_private {
  30         struct etnaviv_iommu_context    *mmu;
  31         struct drm_sched_entity         sched_entity[ETNA_MAX_PIPES];
  32 };
  33
  34 struct etnaviv_drm_private {
  35         int num_gpus;
  36         struct device_dma_parameters dma_parms;
  37         struct etnaviv_gpu *gpu[ETNA_MAX_PIPES];
  38
  39         struct etnaviv_cmdbuf_suballoc *cmdbuf_suballoc;
  40         struct etnaviv_iommu_global *mmu_global;
  41
  42         /* list of GEM objects: */
  43         struct mutex gem_lock;
  44         struct list_head gem_list;
  45 };
  46
  47 int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
  48                 struct drm_file *file);
  49
  50 int etnaviv_gem_mmap(struct file *filp, struct vm_area_struct *vma);
  51 vm_fault_t etnaviv_gem_fault(struct vm_fault *vmf);
  52 int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset);
  53 struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj);
  54 void *etnaviv_gem_prime_vmap(struct drm_gem_object *obj);
  55 void etnaviv_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
  56 int etnaviv_gem_prime_mmap(struct drm_gem_object *obj,
  57                            struct vm_area_struct *vma);
  58 struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev,
  59         struct dma_buf_attachment *attach, struct sg_table *sg);
  60 int etnaviv_gem_prime_pin(struct drm_gem_object *obj);
  61 void etnaviv_gem_prime_unpin(struct drm_gem_object *obj);
  62 void *etnaviv_gem_vmap(struct drm_gem_object *obj);
  63 int etnaviv_gem_cpu_prep(struct drm_gem_object *obj, u32 op,
  64                 struct drm_etnaviv_timespec *timeout);
  65 int etnaviv_gem_cpu_fini(struct drm_gem_object *obj);
  66 void etnaviv_gem_free_object(struct drm_gem_object *obj);
  67 int etnaviv_gem_new_handle(struct drm_device *dev, struct drm_file *file,
  68                 u32 size, u32 flags, u32 *handle);
  69 int etnaviv_gem_new_userptr(struct drm_device *dev, struct drm_file *file,
  70         uintptr_t ptr, u32 size, u32 flags, u32 *handle);
  71 u16 etnaviv_buffer_init(struct etnaviv_gpu *gpu);
  72 u16 etnaviv_buffer_config_mmuv2(struct etnaviv_gpu *gpu, u32 mtlb_addr, u32 safe_addr);
  73 u16 etnaviv_buffer_config_pta(struct etnaviv_gpu *gpu, unsigned short id);
  74 void etnaviv_buffer_end(struct etnaviv_gpu *gpu);
  75 void etnaviv_sync_point_queue(struct etnaviv_gpu *gpu, unsigned int event);
  76 void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, u32 exec_state,
  77         struct etnaviv_iommu_context *mmu,
  78         unsigned int event, struct etnaviv_cmdbuf *cmdbuf);
  79 void etnaviv_validate_init(void);
  80 bool etnaviv_cmd_validate_one(struct etnaviv_gpu *gpu,
  81         u32 *stream, unsigned int size,
  82         struct drm_etnaviv_gem_submit_reloc *relocs, unsigned int reloc_size);
  83
  84 #ifdef CONFIG_DEBUG_FS
  85 void etnaviv_gem_describe_objects(struct etnaviv_drm_private *priv,
  86         struct seq_file *m);
  87 #endif
  88
  89 #define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
  90 #define VERB(fmt, ...) if (0) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
  91
  92 /*
  93  * Return the storage size of a structure with a variable length array.
  94  * The array is nelem elements of elem_size, where the base structure
  95  * is defined by base.  If the size overflows size_t, return zero.
  96  */
  97 static inline size_t size_vstruct(size_t nelem, size_t elem_size, size_t base)
  98 {
  99         if (elem_size && nelem > (SIZE_MAX - base) / elem_size)
 100                 return 0;
 101         return base + nelem * elem_size;
 102 }
 103
 104 /*
 105  * Etnaviv timeouts are specified wrt CLOCK_MONOTONIC, not jiffies.
 106  * We need to calculate the timeout in terms of number of jiffies
 107  * between the specified timeout and the current CLOCK_MONOTONIC time.
 108  */
 109 static inline unsigned long etnaviv_timeout_to_jiffies(
 110         const struct drm_etnaviv_timespec *timeout)
 111 {
 112         struct timespec64 ts, to = {
 113                 .tv_sec = timeout->tv_sec,
 114                 .tv_nsec = timeout->tv_nsec,
 115         };
 116
 117         ktime_get_ts64(&ts);
 118
 119         /* timeouts before "now" have already expired */
 120         if (timespec64_compare(&to, &ts) <= 0)
 121                 return 0;
 122
 123         ts = timespec64_sub(to, ts);
 124
 125         return timespec64_to_jiffies(&ts);
 126 }
 127
 128 #endif /* __ETNAVIV_DRV_H__ */