/*
 * Copyright © 2016 Red Hat.
 * Copyright © 2016 Bas Nieuwenhuizen
 *
 * Based on radeon_winsys.h which is:
 * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
 * Copyright 2010 Marek Olšák <maraeo@gmail.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

#ifndef RADV_RADEON_WINSYS_H
#define RADV_RADEON_WINSYS_H

#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "util/u_math.h"
#include "util/u_memory.h"
#include <vulkan/vulkan.h>
#include "amd_family.h"

struct radeon_info;
struct ac_surf_info;
struct radeon_surf;

enum radeon_bo_domain { /* bitfield */
                        RADEON_DOMAIN_GTT = 2,
                        RADEON_DOMAIN_VRAM = 4,
                        RADEON_DOMAIN_VRAM_GTT = RADEON_DOMAIN_VRAM | RADEON_DOMAIN_GTT,
                        RADEON_DOMAIN_GDS = 8,
                        RADEON_DOMAIN_OA = 16,
};

enum radeon_bo_flag { /* bitfield */
                      RADEON_FLAG_GTT_WC = (1 << 0),
                      RADEON_FLAG_CPU_ACCESS = (1 << 1),
                      RADEON_FLAG_NO_CPU_ACCESS = (1 << 2),
                      RADEON_FLAG_VIRTUAL = (1 << 3),
                      RADEON_FLAG_VA_UNCACHED = (1 << 4),
                      RADEON_FLAG_IMPLICIT_SYNC = (1 << 5),
                      RADEON_FLAG_NO_INTERPROCESS_SHARING = (1 << 6),
                      RADEON_FLAG_READ_ONLY = (1 << 7),
                      RADEON_FLAG_32BIT = (1 << 8),
                      RADEON_FLAG_PREFER_LOCAL_BO = (1 << 9),
                      RADEON_FLAG_ZERO_VRAM = (1 << 10),
};

enum radeon_ctx_priority {
   RADEON_CTX_PRIORITY_INVALID = -1,
   RADEON_CTX_PRIORITY_LOW = 0,
   RADEON_CTX_PRIORITY_MEDIUM,
   RADEON_CTX_PRIORITY_HIGH,
   RADEON_CTX_PRIORITY_REALTIME,
};

enum radeon_value_id {
   RADEON_ALLOCATED_VRAM,
   RADEON_ALLOCATED_VRAM_VIS,
   RADEON_ALLOCATED_GTT,
   RADEON_TIMESTAMP,
   RADEON_NUM_BYTES_MOVED,
   RADEON_NUM_EVICTIONS,
   RADEON_NUM_VRAM_CPU_PAGE_FAULTS,
   RADEON_VRAM_USAGE,
   RADEON_VRAM_VIS_USAGE,
   RADEON_GTT_USAGE,
   RADEON_GPU_TEMPERATURE,
   RADEON_CURRENT_SCLK,
   RADEON_CURRENT_MCLK,
};

struct radeon_cmdbuf {
   unsigned cdw;    /* Number of used dwords. */
   unsigned max_dw; /* Maximum number of dwords. */
   uint32_t *buf;   /* The base pointer of the chunk. */
};

#define RADEON_SURF_TYPE_MASK     0xFF
#define RADEON_SURF_TYPE_SHIFT    0
#define RADEON_SURF_TYPE_1D       0
#define RADEON_SURF_TYPE_2D       1
#define RADEON_SURF_TYPE_3D       2
#define RADEON_SURF_TYPE_CUBEMAP  3
#define RADEON_SURF_TYPE_1D_ARRAY 4
#define RADEON_SURF_TYPE_2D_ARRAY 5
#define RADEON_SURF_MODE_MASK     0xFF
#define RADEON_SURF_MODE_SHIFT    8

#define RADEON_SURF_GET(v, field)                                                                  \
   (((v) >> RADEON_SURF_##field##_SHIFT) & RADEON_SURF_##field##_MASK)
#define RADEON_SURF_SET(v, field) (((v)&RADEON_SURF_##field##_MASK) << RADEON_SURF_##field##_SHIFT)
#define RADEON_SURF_CLR(v, field)                                                                  \
   ((v) & ~(RADEON_SURF_##field##_MASK << RADEON_SURF_##field##_SHIFT))

enum radeon_bo_layout {
   RADEON_LAYOUT_LINEAR = 0,
   RADEON_LAYOUT_TILED,
   RADEON_LAYOUT_SQUARETILED,

   RADEON_LAYOUT_UNKNOWN
};

/* Tiling info for display code, DRI sharing, and other data. */
struct radeon_bo_metadata {
   /* Tiling flags describing the texture layout for display code
    * and DRI sharing.
    */
   union {
      struct {
         enum radeon_bo_layout microtile;
         enum radeon_bo_layout macrotile;
         unsigned pipe_config;
         unsigned bankw;
         unsigned bankh;
         unsigned tile_split;
         unsigned mtilea;
         unsigned num_banks;
         unsigned stride;
         bool scanout;
      } legacy;

      struct {
         /* surface flags */
         unsigned swizzle_mode : 5;
         bool scanout;
         uint32_t dcc_offset_256b;
         uint32_t dcc_pitch_max;
         bool dcc_independent_64b_blocks;
         bool dcc_independent_128b_blocks;
         unsigned dcc_max_compressed_block_size;
      } gfx9;
   } u;

   /* Additional metadata associated with the buffer, in bytes.
    * The maximum size is 64 * 4. This is opaque for the winsys & kernel.
    * Supported by amdgpu only.
    */
   uint32_t size_metadata;
   uint32_t metadata[64];
};

struct radeon_winsys_ctx;

struct radeon_winsys_bo {
   uint64_t va;
   bool is_local;
   bool vram_no_cpu_access;
   bool use_global_list;
   enum radeon_bo_domain initial_domain;
};
struct radv_winsys_sem_counts {
   uint32_t syncobj_count;
   uint32_t syncobj_reset_count; /* for wait only, whether to reset the syncobj */
   uint32_t timeline_syncobj_count;
   uint32_t *syncobj;
   uint64_t *points;
};

struct radv_winsys_sem_info {
   bool cs_emit_signal;
   bool cs_emit_wait;
   struct radv_winsys_sem_counts wait;
   struct radv_winsys_sem_counts signal;
};

struct radv_winsys_bo_list {
   struct radeon_winsys_bo **bos;
   unsigned count;
};

/* Kernel effectively allows 0-31. This sets some priorities for fixed
 * functionality buffers */
enum {
   RADV_BO_PRIORITY_APPLICATION_MAX = 28,

   /* virtual buffers have 0 priority since the priority is not used. */
   RADV_BO_PRIORITY_VIRTUAL = 0,

   RADV_BO_PRIORITY_METADATA = 10,
   /* This should be considerably lower than most of the stuff below,
    * but how much lower is hard to say since we don't know application
    * assignments. Put it pretty high since it is GTT anyway. */
   RADV_BO_PRIORITY_QUERY_POOL = 29,

   RADV_BO_PRIORITY_DESCRIPTOR = 30,
   RADV_BO_PRIORITY_UPLOAD_BUFFER = 30,
   RADV_BO_PRIORITY_FENCE = 30,
   RADV_BO_PRIORITY_SHADER = 31,
   RADV_BO_PRIORITY_SCRATCH = 31,
   RADV_BO_PRIORITY_CS = 31,
};

struct radeon_winsys {
   void (*destroy)(struct radeon_winsys *ws);

   void (*query_info)(struct radeon_winsys *ws, struct radeon_info *info);

   uint64_t (*query_value)(struct radeon_winsys *ws, enum radeon_value_id value);

   bool (*read_registers)(struct radeon_winsys *ws, unsigned reg_offset, unsigned num_registers,
                          uint32_t *out);

   const char *(*get_chip_name)(struct radeon_winsys *ws);

   struct radeon_winsys_bo *(*buffer_create)(struct radeon_winsys *ws, uint64_t size,
                                             unsigned alignment, enum radeon_bo_domain domain,
                                             enum radeon_bo_flag flags, unsigned priority);

   void (*buffer_destroy)(struct radeon_winsys *ws, struct radeon_winsys_bo *bo);
   void *(*buffer_map)(struct radeon_winsys_bo *bo);

   struct radeon_winsys_bo *(*buffer_from_ptr)(struct radeon_winsys *ws, void *pointer,
                                               uint64_t size, unsigned priority);

   struct radeon_winsys_bo *(*buffer_from_fd)(struct radeon_winsys *ws, int fd, unsigned priority,
                                              uint64_t *alloc_size);

   bool (*buffer_get_fd)(struct radeon_winsys *ws, struct radeon_winsys_bo *bo, int *fd);

   bool (*buffer_get_flags_from_fd)(struct radeon_winsys *ws, int fd,
                                    enum radeon_bo_domain *domains, enum radeon_bo_flag *flags);

   void (*buffer_unmap)(struct radeon_winsys_bo *bo);

   void (*buffer_set_metadata)(struct radeon_winsys *ws, struct radeon_winsys_bo *bo,
                               struct radeon_bo_metadata *md);
   void (*buffer_get_metadata)(struct radeon_winsys *ws, struct radeon_winsys_bo *bo,
                               struct radeon_bo_metadata *md);

   VkResult (*buffer_virtual_bind)(struct radeon_winsys *ws, struct radeon_winsys_bo *parent,
                                   uint64_t offset, uint64_t size, struct radeon_winsys_bo *bo,
                                   uint64_t bo_offset);

   VkResult (*buffer_make_resident)(struct radeon_winsys *ws, struct radeon_winsys_bo *bo,
                                    bool resident);

   VkResult (*ctx_create)(struct radeon_winsys *ws, enum radeon_ctx_priority priority,
                          struct radeon_winsys_ctx **ctx);
   void (*ctx_destroy)(struct radeon_winsys_ctx *ctx);

   bool (*ctx_wait_idle)(struct radeon_winsys_ctx *ctx, enum ring_type ring_type, int ring_index);

   enum radeon_bo_domain (*cs_domain)(const struct radeon_winsys *ws);

   struct radeon_cmdbuf *(*cs_create)(struct radeon_winsys *ws, enum ring_type ring_type);

   void (*cs_destroy)(struct radeon_cmdbuf *cs);

   void (*cs_reset)(struct radeon_cmdbuf *cs);

   VkResult (*cs_finalize)(struct radeon_cmdbuf *cs);

   void (*cs_grow)(struct radeon_cmdbuf *cs, size_t min_size);

   VkResult (*cs_submit)(struct radeon_winsys_ctx *ctx, int queue_index,
                         struct radeon_cmdbuf **cs_array, unsigned cs_count,
                         struct radeon_cmdbuf *initial_preamble_cs,
                         struct radeon_cmdbuf *continue_preamble_cs,
                         struct radv_winsys_sem_info *sem_info, bool can_patch);

   void (*cs_add_buffer)(struct radeon_cmdbuf *cs, struct radeon_winsys_bo *bo);

   void (*cs_execute_secondary)(struct radeon_cmdbuf *parent, struct radeon_cmdbuf *child);

   void (*cs_dump)(struct radeon_cmdbuf *cs, FILE *file, const int *trace_ids, int trace_id_count);

   void (*dump_bo_ranges)(struct radeon_winsys *ws, FILE *file);

   void (*dump_bo_log)(struct radeon_winsys *ws, FILE *file);

   int (*surface_init)(struct radeon_winsys *ws, const struct ac_surf_info *surf_info,
                       struct radeon_surf *surf);

   int (*create_syncobj)(struct radeon_winsys *ws, bool create_signaled, uint32_t *handle);
   void (*destroy_syncobj)(struct radeon_winsys *ws, uint32_t handle);

   void (*reset_syncobj)(struct radeon_winsys *ws, uint32_t handle);
   void (*signal_syncobj)(struct radeon_winsys *ws, uint32_t handle, uint64_t point);
   VkResult (*query_syncobj)(struct radeon_winsys *ws, uint32_t handle, uint64_t *point);
   bool (*wait_syncobj)(struct radeon_winsys *ws, const uint32_t *handles, uint32_t handle_count,
                        bool wait_all, uint64_t timeout);
   bool (*wait_timeline_syncobj)(struct radeon_winsys *ws, const uint32_t *handles,
                                 const uint64_t *points, uint32_t handle_count, bool wait_all,
                                 bool available, uint64_t timeout);

   int (*export_syncobj)(struct radeon_winsys *ws, uint32_t syncobj, int *fd);
   int (*import_syncobj)(struct radeon_winsys *ws, int fd, uint32_t *syncobj);

   int (*export_syncobj_to_sync_file)(struct radeon_winsys *ws, uint32_t syncobj, int *fd);

   /* Note that this, unlike the normal import, uses an existing syncobj. */
   int (*import_syncobj_from_sync_file)(struct radeon_winsys *ws, uint32_t syncobj, int fd);
};

static inline void
radeon_emit(struct radeon_cmdbuf *cs, uint32_t value)
{
   cs->buf[cs->cdw++] = value;
}

static inline void
radeon_emit_array(struct radeon_cmdbuf *cs, const uint32_t *values, unsigned count)
{
   memcpy(cs->buf + cs->cdw, values, count * 4);
   cs->cdw += count;
}

static inline uint64_t
radv_buffer_get_va(struct radeon_winsys_bo *bo)
{
   return bo->va;
}

static inline void
radv_cs_add_buffer(struct radeon_winsys *ws, struct radeon_cmdbuf *cs, struct radeon_winsys_bo *bo)
{
   if (bo->use_global_list)
      return;

   ws->cs_add_buffer(cs, bo);
}

#endif /* RADV_RADEON_WINSYS_H */
