radeon_winsys.h

/*
 * Copyright 2008 Corbin Simpson <[email protected]>
 * Copyright 2010 Marek Olšák <[email protected]>
 * Copyright 2018 Advanced Micro Devices, Inc.
 * All Rights Reserved.
 *
 * 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
 * on the rights to use, copy, modify, merge, publish, distribute, sub
 * license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS 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 RADEON_WINSYS_H
#define RADEON_WINSYS_H

/* The public winsys interface header for the radeon driver. */

/* Skip command submission. Same as RADEON_NOOP=1. */
#define RADEON_FLUSH_NOOP                     (1u << 29)

/* Toggle the secure submission boolean after the flush */
#define RADEON_FLUSH_TOGGLE_SECURE_SUBMISSION (1u << 30)

/* Whether the next IB can start immediately and not wait for draws and
 * dispatches from the current IB to finish. */
#define RADEON_FLUSH_START_NEXT_GFX_IB_NOW    (1u << 31)

#define RADEON_FLUSH_ASYNC_START_NEXT_GFX_IB_NOW                                                   \
   (PIPE_FLUSH_ASYNC | RADEON_FLUSH_START_NEXT_GFX_IB_NOW)

#include "amd/common/ac_gpu_info.h"
#include "amd/common/ac_surface.h"
#include "pipebuffer/pb_buffer.h"

/* Tiling flags. */
enum radeon_bo_layout
{
   RADEON_LAYOUT_LINEAR = 0,
   RADEON_LAYOUT_TILED,
   RADEON_LAYOUT_SQUARETILED,

   RADEON_LAYOUT_UNKNOWN
};

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_NO_CPU_ACCESS = (1 << 1),
  RADEON_FLAG_NO_SUBALLOC = (1 << 2),
  RADEON_FLAG_SPARSE = (1 << 3),
  RADEON_FLAG_NO_INTERPROCESS_SHARING = (1 << 4),
  RADEON_FLAG_READ_ONLY = (1 << 5),
  RADEON_FLAG_32BIT = (1 << 6),
  RADEON_FLAG_ENCRYPTED = (1 << 7),
  RADEON_FLAG_UNCACHED = (1 << 8), /* only gfx9 and newer */
  RADEON_FLAG_DRIVER_INTERNAL = (1 << 9),
};

enum radeon_dependency_flag
{
   /* Add the dependency to the parallel compute IB only. */
   RADEON_DEPENDENCY_PARALLEL_COMPUTE_ONLY = 1 << 0,

   /* Instead of waiting for a job to finish execution, the dependency will
    * be signaled when the job starts execution.
    */
   RADEON_DEPENDENCY_START_FENCE = 1 << 1,
};

enum radeon_bo_usage
{ /* bitfield */
  RADEON_USAGE_READ = 2,
  RADEON_USAGE_WRITE = 4,
  RADEON_USAGE_READWRITE = RADEON_USAGE_READ | RADEON_USAGE_WRITE,

  /* The winsys ensures that the CS submission will be scheduled after
   * previously flushed CSs referencing this BO in a conflicting way.
   */
  RADEON_USAGE_SYNCHRONIZED = 8,

  /* When used, an implicit sync is done to make sure a compute shader
   * will read the written values from a previous draw.
   */
  RADEON_USAGE_NEEDS_IMPLICIT_SYNC = 16,
};

enum radeon_map_flags
{
   /* Indicates that the caller will unmap the buffer.
    *
    * Not unmapping buffers is an important performance optimization for
    * OpenGL (avoids kernel overhead for frequently mapped buffers).
    */
   RADEON_MAP_TEMPORARY = (PIPE_MAP_DRV_PRV << 0),
};

#define RADEON_SPARSE_PAGE_SIZE (64 * 1024)

enum radeon_value_id
{
   RADEON_REQUESTED_VRAM_MEMORY,
   RADEON_REQUESTED_GTT_MEMORY,
   RADEON_MAPPED_VRAM,
   RADEON_MAPPED_GTT,
   RADEON_SLAB_WASTED_VRAM,
   RADEON_SLAB_WASTED_GTT,
   RADEON_BUFFER_WAIT_TIME_NS,
   RADEON_NUM_MAPPED_BUFFERS,
   RADEON_TIMESTAMP,
   RADEON_NUM_GFX_IBS,
   RADEON_NUM_SDMA_IBS,
   RADEON_GFX_BO_LIST_COUNTER, /* number of BOs submitted in gfx IBs */
   RADEON_GFX_IB_SIZE_COUNTER,
   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, /* DRM 2.42.0 */
   RADEON_CURRENT_SCLK,
   RADEON_CURRENT_MCLK,
   RADEON_CS_THREAD_TIME,
};

enum radeon_bo_priority
{
   /* Each group of two has the same priority. */
   RADEON_PRIO_FENCE = 0,
   RADEON_PRIO_TRACE,

   RADEON_PRIO_SO_FILLED_SIZE = 2,
   RADEON_PRIO_QUERY,

   RADEON_PRIO_IB1 = 4, /* main IB submitted to the kernel */
   RADEON_PRIO_IB2,     /* IB executed with INDIRECT_BUFFER */

   RADEON_PRIO_DRAW_INDIRECT = 6,
   RADEON_PRIO_INDEX_BUFFER,

   RADEON_PRIO_CP_DMA = 8,
   RADEON_PRIO_BORDER_COLORS,

   RADEON_PRIO_CONST_BUFFER = 10,
   RADEON_PRIO_DESCRIPTORS,

   RADEON_PRIO_SAMPLER_BUFFER = 12,
   RADEON_PRIO_VERTEX_BUFFER,

   RADEON_PRIO_SHADER_RW_BUFFER = 14,
   RADEON_PRIO_COMPUTE_GLOBAL,

   RADEON_PRIO_SAMPLER_TEXTURE = 16,
   RADEON_PRIO_SHADER_RW_IMAGE,

   RADEON_PRIO_SAMPLER_TEXTURE_MSAA = 18,
   RADEON_PRIO_COLOR_BUFFER,

   RADEON_PRIO_DEPTH_BUFFER = 20,

   RADEON_PRIO_COLOR_BUFFER_MSAA = 22,

   RADEON_PRIO_DEPTH_BUFFER_MSAA = 24,

   RADEON_PRIO_SEPARATE_META = 26,
   RADEON_PRIO_SHADER_BINARY, /* the hw can't hide instruction cache misses */

   RADEON_PRIO_SHADER_RINGS = 28,

   RADEON_PRIO_SCRATCH_BUFFER = 30,
   /* 31 is the maximum value */
};

struct winsys_handle;
struct radeon_winsys_ctx;

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

struct radeon_cmdbuf {
   struct radeon_cmdbuf_chunk current;
   struct radeon_cmdbuf_chunk *prev;
   uint16_t num_prev; /* Number of previous chunks. */
   uint16_t max_prev; /* Space in array pointed to by prev. */
   unsigned prev_dw;  /* Total number of dwords in previous chunks. */

   /* Memory usage of the buffer list. These are always 0 for preamble IBs. */
   uint32_t used_vram_kb;
   uint32_t used_gart_kb;
   uint64_t gpu_address;

   /* Private winsys data. */
   void *priv;
};

/* 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;
   } u;

   enum radeon_surf_mode mode;   /* Output from buffer_get_metadata */

   /* 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];
};

enum radeon_feature_id
{
   RADEON_FID_R300_HYPERZ_ACCESS, /* ZMask + HiZ */
   RADEON_FID_R300_CMASK_ACCESS,
};

struct radeon_bo_list_item {
   uint64_t bo_size;
   uint64_t vm_address;
   uint32_t priority_usage; /* mask of (1 << RADEON_PRIO_*) */
};

struct radeon_winsys {
   /**
    * The screen object this winsys was created for
    */
   struct pipe_screen *screen;
   /**
    * Has the application created at least one TMZ buffer.
    */
   const bool uses_secure_bos;

   /**
    * Decrement the winsys reference count.
    *
    * \param ws  The winsys this function is called for.
    * \return    True if the winsys and screen should be destroyed.
    */
   bool (*unref)(struct radeon_winsys *ws);

   /**
    * Destroy this winsys.
    *
    * \param ws        The winsys this function is called from.
    */
   void (*destroy)(struct radeon_winsys *ws);

   /**
    * Query an info structure from winsys.
    *
    * \param ws        The winsys this function is called from.
    * \param info      Return structure
    */
   void (*query_info)(struct radeon_winsys *ws, struct radeon_info *info,
                      bool enable_smart_access_memory,
                      bool disable_smart_access_memory);

   /**
    * A hint for the winsys that it should pin its execution threads to
    * a group of cores sharing a specific L3 cache if the CPU has multiple
    * L3 caches. This is needed for good multithreading performance on
    * AMD Zen CPUs.
    */
   void (*pin_threads_to_L3_cache)(struct radeon_winsys *ws, unsigned cache);

   /**************************************************************************
    * Buffer management. Buffer attributes are mostly fixed over its lifetime.
    *
    * Remember that gallium gets to choose the interface it needs, and the
    * window systems must then implement that interface (rather than the
    * other way around...).
    *************************************************************************/

   /**
    * Create a buffer object.
    *
    * \param ws        The winsys this function is called from.
    * \param size      The size to allocate.
    * \param alignment An alignment of the buffer in memory.
    * \param use_reusable_pool Whether the cache buffer manager should be used.
    * \param domain    A bitmask of the RADEON_DOMAIN_* flags.
    * \return          The created buffer object.
    */
   struct pb_buffer *(*buffer_create)(struct radeon_winsys *ws, uint64_t size, unsigned alignment,
                                      enum radeon_bo_domain domain, enum radeon_bo_flag flags);

   /**
    * Map the entire data store of a buffer object into the client's address
    * space.
    *
    * Callers are expected to unmap buffers again if and only if the
    * RADEON_MAP_TEMPORARY flag is set in \p usage.
    *
    * \param buf       A winsys buffer object to map.
    * \param cs        A command stream to flush if the buffer is referenced by it.
    * \param usage     A bitmask of the PIPE_MAP_* and RADEON_MAP_* flags.
    * \return          The pointer at the beginning of the buffer.
    */
   void *(*buffer_map)(struct radeon_winsys *ws, struct pb_buffer *buf,
                       struct radeon_cmdbuf *cs, enum pipe_map_flags usage);

   /**
    * Unmap a buffer object from the client's address space.
    *
    * \param buf       A winsys buffer object to unmap.
    */
   void (*buffer_unmap)(struct radeon_winsys *ws, struct pb_buffer *buf);

   /**
    * Wait for the buffer and return true if the buffer is not used
    * by the device.
    *
    * The timeout of 0 will only return the status.
    * The timeout of PIPE_TIMEOUT_INFINITE will always wait until the buffer
    * is idle.
    */
   bool (*buffer_wait)(struct radeon_winsys *ws, struct pb_buffer *buf,
                       uint64_t timeout, enum radeon_bo_usage usage);

   /**
    * Return buffer metadata.
    * (tiling info for display code, DRI sharing, and other data)
    *
    * \param buf       A winsys buffer object to get the flags from.
    * \param md        Metadata
    */
   void (*buffer_get_metadata)(struct radeon_winsys *ws, struct pb_buffer *buf,
                               struct radeon_bo_metadata *md, struct radeon_surf *surf);

   /**
    * Set buffer metadata.
    * (tiling info for display code, DRI sharing, and other data)
    *
    * \param buf       A winsys buffer object to set the flags for.
    * \param md        Metadata
    */
   void (*buffer_set_metadata)(struct radeon_winsys *ws, struct pb_buffer *buf,
                               struct radeon_bo_metadata *md, struct radeon_surf *surf);

   /**
    * Get a winsys buffer from a winsys handle. The internal structure
    * of the handle is platform-specific and only a winsys should access it.
    *
    * \param ws        The winsys this function is called from.
    * \param whandle   A winsys handle pointer as was received from a state
    *                  tracker.
    */
   struct pb_buffer *(*buffer_from_handle)(struct radeon_winsys *ws, struct winsys_handle *whandle,
                                           unsigned vm_alignment);

   /**
    * Get a winsys buffer from a user pointer. The resulting buffer can't
    * be exported. Both pointer and size must be page aligned.
    *
    * \param ws        The winsys this function is called from.
    * \param pointer   User pointer to turn into a buffer object.
    * \param Size      Size in bytes for the new buffer.
    */
   struct pb_buffer *(*buffer_from_ptr)(struct radeon_winsys *ws, void *pointer, uint64_t size);

   /**
    * Whether the buffer was created from a user pointer.
    *
    * \param buf       A winsys buffer object
    * \return          whether \p buf was created via buffer_from_ptr
    */
   bool (*buffer_is_user_ptr)(struct pb_buffer *buf);

   /** Whether the buffer was suballocated. */
   bool (*buffer_is_suballocated)(struct pb_buffer *buf);

   /**
    * Get a winsys handle from a winsys buffer. The internal structure
    * of the handle is platform-specific and only a winsys should access it.
    *
    * \param ws        The winsys instance for which the handle is to be valid
    * \param buf       A winsys buffer object to get the handle from.
    * \param whandle   A winsys handle pointer.
    * \return          true on success.
    */
   bool (*buffer_get_handle)(struct radeon_winsys *ws, struct pb_buffer *buf,
                             struct winsys_handle *whandle);

   /**
    * Change the commitment of a (64KB-page aligned) region of the given
    * sparse buffer.
    *
    * \warning There is no automatic synchronization with command submission.
    *
    * \note Only implemented by the amdgpu winsys.
    *
    * \return false on out of memory or other failure, true on success.
    */
   bool (*buffer_commit)(struct radeon_winsys *ws, struct pb_buffer *buf,
                         uint64_t offset, uint64_t size, bool commit);

   /**
    * Return the virtual address of a buffer.
    *
    * When virtual memory is not in use, this is the offset relative to the
    * relocation base (non-zero for sub-allocated buffers).
    *
    * \param buf       A winsys buffer object
    * \return          virtual address
    */
   uint64_t (*buffer_get_virtual_address)(struct pb_buffer *buf);

   /**
    * Return the offset of this buffer relative to the relocation base.
    * This is only non-zero for sub-allocated buffers.
    *
    * This is only supported in the radeon winsys, since amdgpu uses virtual
    * addresses in submissions even for the video engines.
    *
    * \param buf      A winsys buffer object
    * \return         the offset for relocations
    */
   unsigned (*buffer_get_reloc_offset)(struct pb_buffer *buf);

   /**
    * Query the initial placement of the buffer from the kernel driver.
    */
   enum radeon_bo_domain (*buffer_get_initial_domain)(struct pb_buffer *buf);

   /**
    * Query the flags used for creation of this buffer.
    *
    * Note that for imported buffer this may be lossy since not all flags
    * are passed 1:1.
    */
   enum radeon_bo_flag (*buffer_get_flags)(struct pb_buffer *buf);

   /**************************************************************************
    * Command submission.
    *
    * Each pipe context should create its own command stream and submit
    * commands independently of other contexts.
    *************************************************************************/

   /**
    * Create a command submission context.
    * Various command streams can be submitted to the same context.
    */
   struct radeon_winsys_ctx *(*ctx_create)(struct radeon_winsys *ws);

   /**
    * Destroy a context.
    */
   void (*ctx_destroy)(struct radeon_winsys_ctx *ctx);

   /**
    * Query a GPU reset status.
    */
   enum pipe_reset_status (*ctx_query_reset_status)(struct radeon_winsys_ctx *ctx,
                                                    bool full_reset_only,
                                                    bool *needs_reset);

   /**
    * Create a command stream.
    *
    * \param cs        The returned structure that is initialized by cs_create.
    * \param ctx       The submission context
    * \param ring_type The ring type (GFX, DMA, UVD)
    * \param flush     Flush callback function associated with the command stream.
    * \param user      User pointer that will be passed to the flush callback.
    *
    * \return true on success
    */
   bool (*cs_create)(struct radeon_cmdbuf *cs,
                     struct radeon_winsys_ctx *ctx, enum ring_type ring_type,
                     void (*flush)(void *ctx, unsigned flags,
                                   struct pipe_fence_handle **fence),
                     void *flush_ctx, bool stop_exec_on_failure);

   /**
    * Add a parallel compute IB to a gfx IB. It will share the buffer list
    * and fence dependencies with the gfx IB. The gfx flush call will submit
    * both IBs at the same time.
    *
    * The compute IB doesn't have an output fence, so the primary IB has
    * to use a wait packet for synchronization.
    *
    * The returned IB is only a stream for writing packets to the new
    * IB. The only function that can be used on the compute cs is cs_check_space.
    *
    * \param compute_cs      The returned structure of the command stream.
    * \param gfx_cs          Gfx IB
    *
    * \return true on success
    */
   bool (*cs_add_parallel_compute_ib)(struct radeon_cmdbuf *compute_cs,
                                      struct radeon_cmdbuf *gfx_cs,
                                      bool uses_gds_ordered_append);

   /**
    * Set up and enable mid command buffer preemption for the command stream.
    *
    * \param cs               Command stream
    * \param preamble_ib      Non-preemptible preamble IB for the context.
    * \param preamble_num_dw  Number of dwords in the preamble IB.
    */
   bool (*cs_setup_preemption)(struct radeon_cmdbuf *cs, const uint32_t *preamble_ib,
                               unsigned preamble_num_dw);

   /**
    * Destroy a command stream.
    *
    * \param cs        A command stream to destroy.
    */
   void (*cs_destroy)(struct radeon_cmdbuf *cs);

   /**
    * Add a buffer. Each buffer used by a CS must be added using this function.
    *
    * \param cs      Command stream
    * \param buf     Buffer
    * \param usage   Whether the buffer is used for read and/or write.
    * \param domain  Bitmask of the RADEON_DOMAIN_* flags.
    * \param priority  A higher number means a greater chance of being
    *                  placed in the requested domain. 15 is the maximum.
    * \return Buffer index.
    */
   unsigned (*cs_add_buffer)(struct radeon_cmdbuf *cs, struct pb_buffer *buf,
                             enum radeon_bo_usage usage, enum radeon_bo_domain domain,
                             enum radeon_bo_priority priority);

   /**
    * Return the index of an already-added buffer.
    *
    * Not supported on amdgpu. Drivers with GPUVM should not care about
    * buffer indices.
    *
    * \param cs        Command stream
    * \param buf       Buffer
    * \return          The buffer index, or -1 if the buffer has not been added.
    */
   int (*cs_lookup_buffer)(struct radeon_cmdbuf *cs, struct pb_buffer *buf);

   /**
    * Return true if there is enough memory in VRAM and GTT for the buffers
    * added so far. If the validation fails, all buffers which have
    * been added since the last call of cs_validate will be removed and
    * the CS will be flushed (provided there are still any buffers).
    *
    * \param cs        A command stream to validate.
    */
   bool (*cs_validate)(struct radeon_cmdbuf *cs);

   /**
    * Check whether the given number of dwords is available in the IB.
    * Optionally chain a new chunk of the IB if necessary and supported.
    *
    * \param cs        A command stream.
    * \param dw        Number of CS dwords requested by the caller.
    * \param force_chaining  Chain the IB into a new buffer now to discard
    *                        the CP prefetch cache (to emulate PKT3_REWIND)
    * \return true if there is enough space
    */
   bool (*cs_check_space)(struct radeon_cmdbuf *cs, unsigned dw, bool force_chaining);

   /**
    * Return the buffer list.
    *
    * This is the buffer list as passed to the kernel, i.e. it only contains
    * the parent buffers of sub-allocated buffers.
    *
    * \param cs    Command stream
    * \param list  Returned buffer list. Set to NULL to query the count only.
    * \return      The buffer count.
    */
   unsigned (*cs_get_buffer_list)(struct radeon_cmdbuf *cs, struct radeon_bo_list_item *list);

   /**
    * Flush a command stream.
    *
    * \param cs          A command stream to flush.
    * \param flags,      PIPE_FLUSH_* flags.
    * \param fence       Pointer to a fence. If non-NULL, a fence is inserted
    *                    after the CS and is returned through this parameter.
    * \return Negative POSIX error code or 0 for success.
    *         Asynchronous submissions never return an error.
    */
   int (*cs_flush)(struct radeon_cmdbuf *cs, unsigned flags, struct pipe_fence_handle **fence);

   /**
    * Create a fence before the CS is flushed.
    * The user must flush manually to complete the initializaton of the fence.
    *
    * The fence must not be used for anything except \ref cs_add_fence_dependency
    * before the flush.
    */
   struct pipe_fence_handle *(*cs_get_next_fence)(struct radeon_cmdbuf *cs);

   /**
    * Return true if a buffer is referenced by a command stream.
    *
    * \param cs        A command stream.
    * \param buf       A winsys buffer.
    */
   bool (*cs_is_buffer_referenced)(struct radeon_cmdbuf *cs, struct pb_buffer *buf,
                                   enum radeon_bo_usage usage);

   /**
    * Request access to a feature for a command stream.
    *
    * \param cs        A command stream.
    * \param fid       Feature ID, one of RADEON_FID_*
    * \param enable    Whether to enable or disable the feature.
    */
   bool (*cs_request_feature)(struct radeon_cmdbuf *cs, enum radeon_feature_id fid, bool enable);
   /**
    * Make sure all asynchronous flush of the cs have completed
    *
    * \param cs        A command stream.
    */
   void (*cs_sync_flush)(struct radeon_cmdbuf *cs);

   /**
    * Add a fence dependency to the CS, so that the CS will wait for
    * the fence before execution.
    *
    * \param dependency_flags  Bitmask of RADEON_DEPENDENCY_*
    */
   void (*cs_add_fence_dependency)(struct radeon_cmdbuf *cs, struct pipe_fence_handle *fence,
                                   unsigned dependency_flags);

   /**
    * Signal a syncobj when the CS finishes execution.
    */
   void (*cs_add_syncobj_signal)(struct radeon_cmdbuf *cs, struct pipe_fence_handle *fence);

   /**
    * Wait for the fence and return true if the fence has been signalled.
    * The timeout of 0 will only return the status.
    * The timeout of PIPE_TIMEOUT_INFINITE will always wait until the fence
    * is signalled.
    */
   bool (*fence_wait)(struct radeon_winsys *ws, struct pipe_fence_handle *fence, uint64_t timeout);

   /**
    * Reference counting for fences.
    */
   void (*fence_reference)(struct pipe_fence_handle **dst, struct pipe_fence_handle *src);

   /**
    * Create a new fence object corresponding to the given syncobj fd.
    */
   struct pipe_fence_handle *(*fence_import_syncobj)(struct radeon_winsys *ws, int fd);

   /**
    * Create a new fence object corresponding to the given sync_file.
    */
   struct pipe_fence_handle *(*fence_import_sync_file)(struct radeon_winsys *ws, int fd);

   /**
    * Return a sync_file FD corresponding to the given fence object.
    */
   int (*fence_export_sync_file)(struct radeon_winsys *ws, struct pipe_fence_handle *fence);

   /**
    * Return a sync file FD that is already signalled.
    */
   int (*export_signalled_sync_file)(struct radeon_winsys *ws);

   /**
    * Initialize surface
    *
    * \param ws        The winsys this function is called from.
    * \param tex       Input texture description
    * \param flags     Bitmask of RADEON_SURF_* flags
    * \param bpe       Bytes per pixel, it can be different for Z buffers.
    * \param mode      Preferred tile mode. (linear, 1D, or 2D)
    * \param surf      Output structure
    */
   int (*surface_init)(struct radeon_winsys *ws, const struct pipe_resource *tex, unsigned flags,
                       unsigned bpe, enum radeon_surf_mode mode, struct radeon_surf *surf);

   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);

   /**
    * Secure context
    */
   bool (*cs_is_secure)(struct radeon_cmdbuf *cs);
};

static inline bool radeon_emitted(struct radeon_cmdbuf *cs, unsigned num_dw)
{
   return cs && (cs->prev_dw + cs->current.cdw > num_dw);
}

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

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

static inline bool radeon_uses_secure_bos(struct radeon_winsys* ws)
{
  return ws->uses_secure_bos;
}

static inline void
radeon_bo_reference(struct radeon_winsys *rws, struct pb_buffer **dst, struct pb_buffer *src)
{
   pb_reference_with_winsys(rws, dst, src);
}

enum radeon_heap
{
   RADEON_HEAP_VRAM_NO_CPU_ACCESS,
   RADEON_HEAP_VRAM_READ_ONLY,
   RADEON_HEAP_VRAM_READ_ONLY_32BIT,
   RADEON_HEAP_VRAM_32BIT,
   RADEON_HEAP_VRAM,
   RADEON_HEAP_GTT_WC,
   RADEON_HEAP_GTT_WC_READ_ONLY,
   RADEON_HEAP_GTT_WC_READ_ONLY_32BIT,
   RADEON_HEAP_GTT_WC_32BIT,
   RADEON_HEAP_GTT,
   RADEON_HEAP_GTT_UNCACHED_WC,
   RADEON_HEAP_GTT_UNCACHED_WC_READ_ONLY,
   RADEON_HEAP_GTT_UNCACHED_WC_READ_ONLY_32BIT,
   RADEON_HEAP_GTT_UNCACHED_WC_32BIT,
   RADEON_HEAP_GTT_UNCACHED,
   RADEON_MAX_SLAB_HEAPS,
   RADEON_MAX_CACHED_HEAPS = RADEON_MAX_SLAB_HEAPS,
};

static inline enum radeon_bo_domain radeon_domain_from_heap(enum radeon_heap heap)
{
   switch (heap) {
   case RADEON_HEAP_VRAM_NO_CPU_ACCESS:
   case RADEON_HEAP_VRAM_READ_ONLY:
   case RADEON_HEAP_VRAM_READ_ONLY_32BIT:
   case RADEON_HEAP_VRAM_32BIT:
   case RADEON_HEAP_VRAM:
      return RADEON_DOMAIN_VRAM;
   case RADEON_HEAP_GTT_WC:
   case RADEON_HEAP_GTT_WC_READ_ONLY:
   case RADEON_HEAP_GTT_WC_READ_ONLY_32BIT:
   case RADEON_HEAP_GTT_WC_32BIT:
   case RADEON_HEAP_GTT:
   case RADEON_HEAP_GTT_UNCACHED_WC:
   case RADEON_HEAP_GTT_UNCACHED_WC_READ_ONLY:
   case RADEON_HEAP_GTT_UNCACHED_WC_READ_ONLY_32BIT:
   case RADEON_HEAP_GTT_UNCACHED_WC_32BIT:
   case RADEON_HEAP_GTT_UNCACHED:
      return RADEON_DOMAIN_GTT;
   default:
      assert(0);
      return (enum radeon_bo_domain)0;
   }
}

static inline unsigned radeon_flags_from_heap(enum radeon_heap heap)
{
   unsigned flags = RADEON_FLAG_NO_INTERPROCESS_SHARING;

   switch (heap) {
   case RADEON_HEAP_GTT:
   case RADEON_HEAP_GTT_UNCACHED:
      break;
   default:
      flags |= RADEON_FLAG_GTT_WC;
   }

   switch (heap) {
   case RADEON_HEAP_GTT_UNCACHED_WC:
   case RADEON_HEAP_GTT_UNCACHED_WC_READ_ONLY:
   case RADEON_HEAP_GTT_UNCACHED_WC_READ_ONLY_32BIT:
   case RADEON_HEAP_GTT_UNCACHED_WC_32BIT:
   case RADEON_HEAP_GTT_UNCACHED:
      flags |= RADEON_FLAG_UNCACHED;
      break;
   default:
      break;
   }

   switch (heap) {
   case RADEON_HEAP_VRAM_READ_ONLY:
   case RADEON_HEAP_VRAM_READ_ONLY_32BIT:
   case RADEON_HEAP_GTT_WC_READ_ONLY:
   case RADEON_HEAP_GTT_WC_READ_ONLY_32BIT:
   case RADEON_HEAP_GTT_UNCACHED_WC_READ_ONLY:
   case RADEON_HEAP_GTT_UNCACHED_WC_READ_ONLY_32BIT:
      flags |= RADEON_FLAG_READ_ONLY;
      break;
   default:
      break;
   }

   switch (heap) {
   case RADEON_HEAP_VRAM_READ_ONLY_32BIT:
   case RADEON_HEAP_VRAM_32BIT:
   case RADEON_HEAP_GTT_WC_READ_ONLY_32BIT:
   case RADEON_HEAP_GTT_WC_32BIT:
   case RADEON_HEAP_GTT_UNCACHED_WC_READ_ONLY_32BIT:
   case RADEON_HEAP_GTT_UNCACHED_WC_32BIT:
      flags |= RADEON_FLAG_32BIT;
      FALLTHROUGH;
   default:
      break;
   }

   switch (heap) {
   case RADEON_HEAP_VRAM_NO_CPU_ACCESS:
      flags |= RADEON_FLAG_NO_CPU_ACCESS;
      break;
   default:
      break;
   }

   return flags;
}

/* Return the heap index for winsys allocators, or -1 on failure. */
static inline int radeon_get_heap_index(enum radeon_bo_domain domain, enum radeon_bo_flag flags)
{
   bool uncached;

   /* VRAM implies WC (write combining) */
   assert(!(domain & RADEON_DOMAIN_VRAM) || flags & RADEON_FLAG_GTT_WC);
   /* NO_CPU_ACCESS implies VRAM only. */
   assert(!(flags & RADEON_FLAG_NO_CPU_ACCESS) || domain == RADEON_DOMAIN_VRAM);

   /* Resources with interprocess sharing don't use any winsys allocators. */
   if (!(flags & RADEON_FLAG_NO_INTERPROCESS_SHARING))
      return -1;

   /* Unsupported flags: NO_SUBALLOC, SPARSE. */
   if (flags & ~(RADEON_FLAG_GTT_WC | RADEON_FLAG_NO_CPU_ACCESS | RADEON_FLAG_UNCACHED |
                 RADEON_FLAG_NO_INTERPROCESS_SHARING | RADEON_FLAG_READ_ONLY | RADEON_FLAG_32BIT |
                 RADEON_FLAG_DRIVER_INTERNAL))
      return -1;

   switch (domain) {
   case RADEON_DOMAIN_VRAM:
      switch (flags & (RADEON_FLAG_NO_CPU_ACCESS | RADEON_FLAG_READ_ONLY | RADEON_FLAG_32BIT)) {
      case RADEON_FLAG_NO_CPU_ACCESS | RADEON_FLAG_READ_ONLY | RADEON_FLAG_32BIT:
      case RADEON_FLAG_NO_CPU_ACCESS | RADEON_FLAG_READ_ONLY:
         assert(!"NO_CPU_ACCESS | READ_ONLY doesn't make sense");
         return -1;
      case RADEON_FLAG_NO_CPU_ACCESS | RADEON_FLAG_32BIT:
         assert(!"NO_CPU_ACCESS with 32BIT is disallowed");
         return -1;
      case RADEON_FLAG_NO_CPU_ACCESS:
         return RADEON_HEAP_VRAM_NO_CPU_ACCESS;
      case RADEON_FLAG_READ_ONLY | RADEON_FLAG_32BIT:
         return RADEON_HEAP_VRAM_READ_ONLY_32BIT;
      case RADEON_FLAG_READ_ONLY:
         return RADEON_HEAP_VRAM_READ_ONLY;
      case RADEON_FLAG_32BIT:
         return RADEON_HEAP_VRAM_32BIT;
      case 0:
         return RADEON_HEAP_VRAM;
      }
      break;
   case RADEON_DOMAIN_GTT:
      uncached = flags & RADEON_FLAG_UNCACHED;

      switch (flags & (RADEON_FLAG_GTT_WC | RADEON_FLAG_READ_ONLY | RADEON_FLAG_32BIT)) {
      case RADEON_FLAG_GTT_WC | RADEON_FLAG_READ_ONLY | RADEON_FLAG_32BIT:
         return uncached ? RADEON_HEAP_GTT_UNCACHED_WC_READ_ONLY_32BIT
                         : RADEON_HEAP_GTT_WC_READ_ONLY_32BIT;
      case RADEON_FLAG_GTT_WC | RADEON_FLAG_READ_ONLY:
         return uncached ? RADEON_HEAP_GTT_UNCACHED_WC_READ_ONLY
                         : RADEON_HEAP_GTT_WC_READ_ONLY;
      case RADEON_FLAG_GTT_WC | RADEON_FLAG_32BIT:
         return uncached ? RADEON_HEAP_GTT_UNCACHED_WC_32BIT
                         : RADEON_HEAP_GTT_WC_32BIT;
      case RADEON_FLAG_GTT_WC:
         return uncached ? RADEON_HEAP_GTT_UNCACHED_WC : RADEON_HEAP_GTT_WC;
      case RADEON_FLAG_READ_ONLY | RADEON_FLAG_32BIT:
      case RADEON_FLAG_READ_ONLY:
         assert(!"READ_ONLY without WC is disallowed");
         return -1;
      case RADEON_FLAG_32BIT:
         assert(!"32BIT without WC is disallowed");
         return -1;
      case 0:
         return uncached ? RADEON_HEAP_GTT_UNCACHED : RADEON_HEAP_GTT;
      }
      break;
   default:
      break;
   }
   return -1;
}

#endif