radeonsi: clamp depth comparison value only for fixed point formats

[mesa.git] / src / gallium / drivers / radeon / r600_pipe_common.h

/*
 * Copyright 2013 Advanced Micro Devices, Inc.
 *
 * 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.
 *
 * Authors: Marek Olšák <maraeo@gmail.com>
 *
 */

/**
 * This file contains common screen and context structures and functions
 * for r600g and radeonsi.
 */

#ifndef R600_PIPE_COMMON_H
#define R600_PIPE_COMMON_H

#include <stdio.h>

#include "amd/common/ac_binary.h"

#include "radeon/radeon_winsys.h"

#include "util/disk_cache.h"
#include "util/u_blitter.h"
#include "util/list.h"
#include "util/u_range.h"
#include "util/slab.h"
#include "util/u_suballoc.h"
#include "util/u_transfer.h"
#include "util/u_threaded_context.h"

struct u_log_context;

#define ATI_VENDOR_ID 0x1002

#define R600_RESOURCE_FLAG_TRANSFER             (PIPE_RESOURCE_FLAG_DRV_PRIV << 0)
#define R600_RESOURCE_FLAG_FLUSHED_DEPTH        (PIPE_RESOURCE_FLAG_DRV_PRIV << 1)
#define R600_RESOURCE_FLAG_FORCE_TILING         (PIPE_RESOURCE_FLAG_DRV_PRIV << 2)
#define R600_RESOURCE_FLAG_DISABLE_DCC          (PIPE_RESOURCE_FLAG_DRV_PRIV << 3)
#define R600_RESOURCE_FLAG_UNMAPPABLE           (PIPE_RESOURCE_FLAG_DRV_PRIV << 4)

#define R600_CONTEXT_STREAMOUT_FLUSH            (1u << 0)
/* Pipeline & streamout query controls. */
#define R600_CONTEXT_START_PIPELINE_STATS       (1u << 1)
#define R600_CONTEXT_STOP_PIPELINE_STATS        (1u << 2)
#define R600_CONTEXT_FLUSH_FOR_RENDER_COND      (1u << 3)
#define R600_CONTEXT_PRIVATE_FLAG               (1u << 4)

/* special primitive types */
#define R600_PRIM_RECTANGLE_LIST        PIPE_PRIM_MAX

#define R600_NOT_QUERY          0xffffffff

/* Debug flags. */
#define DBG_VS                  (1 << PIPE_SHADER_VERTEX)
#define DBG_PS                  (1 << PIPE_SHADER_FRAGMENT)
#define DBG_GS                  (1 << PIPE_SHADER_GEOMETRY)
#define DBG_TCS                 (1 << PIPE_SHADER_TESS_CTRL)
#define DBG_TES                 (1 << PIPE_SHADER_TESS_EVAL)
#define DBG_CS                  (1 << PIPE_SHADER_COMPUTE)
#define DBG_ALL_SHADERS         (DBG_FS - 1)
#define DBG_FS                  (1 << 6) /* fetch shader */
#define DBG_TEX                 (1 << 7)
#define DBG_NIR                 (1 << 8)
#define DBG_COMPUTE             (1 << 9)
/* gap */
#define DBG_VM                  (1 << 11)
#define DBG_NO_IR               (1 << 12)
#define DBG_NO_TGSI             (1 << 13)
#define DBG_NO_ASM              (1 << 14)
#define DBG_PREOPT_IR           (1 << 15)
#define DBG_CHECK_IR            (1 << 16)
#define DBG_NO_OPT_VARIANT      (1 << 17)
#define DBG_FS_CORRECT_DERIVS_AFTER_KILL (1 << 18)
/* gaps */
#define DBG_TEST_DMA            (1 << 20)
/* Bits 21-31 are reserved for the r600g driver. */
/* features */
#define DBG_NO_ASYNC_DMA        (1ull << 32)
#define DBG_NO_HYPERZ           (1ull << 33)
#define DBG_NO_DISCARD_RANGE    (1ull << 34)
#define DBG_NO_2D_TILING        (1ull << 35)
#define DBG_NO_TILING           (1ull << 36)
#define DBG_SWITCH_ON_EOP       (1ull << 37)
#define DBG_FORCE_DMA           (1ull << 38)
#define DBG_PRECOMPILE          (1ull << 39)
#define DBG_INFO                (1ull << 40)
#define DBG_NO_WC               (1ull << 41)
#define DBG_CHECK_VM            (1ull << 42)
#define DBG_NO_DCC              (1ull << 43)
#define DBG_NO_DCC_CLEAR        (1ull << 44)
#define DBG_NO_RB_PLUS          (1ull << 45)
#define DBG_SI_SCHED            (1ull << 46)
#define DBG_MONOLITHIC_SHADERS  (1ull << 47)
#define DBG_NO_OUT_OF_ORDER     (1ull << 48)
#define DBG_UNSAFE_MATH         (1ull << 49)
#define DBG_NO_DCC_FB           (1ull << 50)
#define DBG_TEST_VMFAULT_CP     (1ull << 51)
#define DBG_TEST_VMFAULT_SDMA   (1ull << 52)
#define DBG_TEST_VMFAULT_SHADER (1ull << 53)
#define DBG_NO_DPBB             (1ull << 54)
#define DBG_NO_DFSM             (1ull << 55)

#define R600_MAP_BUFFER_ALIGNMENT 64
#define R600_MAX_VIEWPORTS        16

#define SI_MAX_VARIABLE_THREADS_PER_BLOCK 1024

enum r600_coherency {
        R600_COHERENCY_NONE, /* no cache flushes needed */
        R600_COHERENCY_SHADER,
        R600_COHERENCY_CB_META,
};

#ifdef PIPE_ARCH_BIG_ENDIAN
#define R600_BIG_ENDIAN 1
#else
#define R600_BIG_ENDIAN 0
#endif

struct r600_common_context;
struct r600_perfcounters;
struct tgsi_shader_info;
struct r600_qbo_state;

void si_radeon_shader_binary_init(struct ac_shader_binary *b);
void si_radeon_shader_binary_clean(struct ac_shader_binary *b);

/* Only 32-bit buffer allocations are supported, gallium doesn't support more
 * at the moment.
 */
struct r600_resource {
        struct threaded_resource        b;

        /* Winsys objects. */
        struct pb_buffer                *buf;
        uint64_t                        gpu_address;
        /* Memory usage if the buffer placement is optimal. */
        uint64_t                        vram_usage;
        uint64_t                        gart_usage;

        /* Resource properties. */
        uint64_t                        bo_size;
        unsigned                        bo_alignment;
        enum radeon_bo_domain           domains;
        enum radeon_bo_flag             flags;
        unsigned                        bind_history;

        /* The buffer range which is initialized (with a write transfer,
         * streamout, DMA, or as a random access target). The rest of
         * the buffer is considered invalid and can be mapped unsynchronized.
         *
         * This allows unsychronized mapping of a buffer range which hasn't
         * been used yet. It's for applications which forget to use
         * the unsynchronized map flag and expect the driver to figure it out.
         */
        struct util_range               valid_buffer_range;

        /* For buffers only. This indicates that a write operation has been
         * performed by TC L2, but the cache hasn't been flushed.
         * Any hw block which doesn't use or bypasses TC L2 should check this
         * flag and flush the cache before using the buffer.
         *
         * For example, TC L2 must be flushed if a buffer which has been
         * modified by a shader store instruction is about to be used as
         * an index buffer. The reason is that VGT DMA index fetching doesn't
         * use TC L2.
         */
        bool                            TC_L2_dirty;

        /* Whether the resource has been exported via resource_get_handle. */
        unsigned                        external_usage; /* PIPE_HANDLE_USAGE_* */

        /* Whether this resource is referenced by bindless handles. */
        bool                            texture_handle_allocated;
        bool                            image_handle_allocated;
};

struct r600_transfer {
        struct threaded_transfer        b;
        struct r600_resource            *staging;
        unsigned                        offset;
};

struct r600_fmask_info {
        uint64_t offset;
        uint64_t size;
        unsigned alignment;
        unsigned pitch_in_pixels;
        unsigned bank_height;
        unsigned slice_tile_max;
        unsigned tile_mode_index;
        unsigned tile_swizzle;
};

struct r600_cmask_info {
        uint64_t offset;
        uint64_t size;
        unsigned alignment;
        unsigned slice_tile_max;
        uint64_t base_address_reg;
};

struct r600_texture {
        struct r600_resource            resource;

        uint64_t                        size;
        unsigned                        num_level0_transfers;
        enum pipe_format                db_render_format;
        bool                            is_depth;
        bool                            db_compatible;
        bool                            can_sample_z;
        bool                            can_sample_s;
        unsigned                        dirty_level_mask; /* each bit says if that mipmap is compressed */
        unsigned                        stencil_dirty_level_mask; /* each bit says if that mipmap is compressed */
        struct r600_texture             *flushed_depth_texture;
        struct radeon_surf              surface;

        /* Colorbuffer compression and fast clear. */
        struct r600_fmask_info          fmask;
        struct r600_cmask_info          cmask;
        struct r600_resource            *cmask_buffer;
        uint64_t                        dcc_offset; /* 0 = disabled */
        unsigned                        cb_color_info; /* fast clear enable bit */
        unsigned                        color_clear_value[2];
        unsigned                        last_msaa_resolve_target_micro_mode;

        /* Depth buffer compression and fast clear. */
        uint64_t                        htile_offset;
        bool                            tc_compatible_htile;
        bool                            depth_cleared; /* if it was cleared at least once */
        float                           depth_clear_value;
        bool                            stencil_cleared; /* if it was cleared at least once */
        uint8_t                         stencil_clear_value;
        bool                            upgraded_depth; /* upgraded from unorm to Z32_FLOAT */

        bool                            non_disp_tiling; /* R600-Cayman only */

        /* Whether the texture is a displayable back buffer and needs DCC
         * decompression, which is expensive. Therefore, it's enabled only
         * if statistics suggest that it will pay off and it's allocated
         * separately. It can't be bound as a sampler by apps. Limited to
         * target == 2D and last_level == 0. If enabled, dcc_offset contains
         * the absolute GPUVM address, not the relative one.
         */
        struct r600_resource            *dcc_separate_buffer;
        /* When DCC is temporarily disabled, the separate buffer is here. */
        struct r600_resource            *last_dcc_separate_buffer;
        /* We need to track DCC dirtiness, because st/dri usually calls
         * flush_resource twice per frame (not a bug) and we don't wanna
         * decompress DCC twice. Also, the dirty tracking must be done even
         * if DCC isn't used, because it's required by the DCC usage analysis
         * for a possible future enablement.
         */
        bool                            separate_dcc_dirty;
        /* Statistics gathering for the DCC enablement heuristic. */
        bool                            dcc_gather_statistics;
        /* Estimate of how much this color buffer is written to in units of
         * full-screen draws: ps_invocations / (width * height)
         * Shader kills, late Z, and blending with trivial discards make it
         * inaccurate (we need to count CB updates, not PS invocations).
         */
        unsigned                        ps_draw_ratio;
        /* The number of clears since the last DCC usage analysis. */
        unsigned                        num_slow_clears;

        /* Counter that should be non-zero if the texture is bound to a
         * framebuffer. Implemented in radeonsi only.
         */
        uint32_t                        framebuffers_bound;
};

struct r600_surface {
        struct pipe_surface             base;

        /* These can vary with block-compressed textures. */
        unsigned width0;
        unsigned height0;

        bool color_initialized;
        bool depth_initialized;

        /* Misc. color flags. */
        bool alphatest_bypass;
        bool export_16bpc;
        bool color_is_int8;
        bool color_is_int10;
        bool dcc_incompatible;

        /* Color registers. */
        unsigned cb_color_info;
        unsigned cb_color_base;
        unsigned cb_color_view;
        unsigned cb_color_size;         /* R600 only */
        unsigned cb_color_dim;          /* EG only */
        unsigned cb_color_pitch;        /* EG and later */
        unsigned cb_color_slice;        /* EG and later */
        unsigned cb_color_attrib;       /* EG and later */
        unsigned cb_color_attrib2;      /* GFX9 and later */
        unsigned cb_dcc_control;        /* VI and later */
        unsigned cb_color_fmask;        /* CB_COLORn_FMASK (EG and later) or CB_COLORn_FRAG (r600) */
        unsigned cb_color_fmask_slice;  /* EG and later */
        unsigned cb_color_cmask;        /* CB_COLORn_TILE (r600 only) */
        unsigned cb_color_mask;         /* R600 only */
        unsigned spi_shader_col_format;         /* SI+, no blending, no alpha-to-coverage. */
        unsigned spi_shader_col_format_alpha;   /* SI+, alpha-to-coverage */
        unsigned spi_shader_col_format_blend;   /* SI+, blending without alpha. */
        unsigned spi_shader_col_format_blend_alpha; /* SI+, blending with alpha. */
        struct r600_resource *cb_buffer_fmask; /* Used for FMASK relocations. R600 only */
        struct r600_resource *cb_buffer_cmask; /* Used for CMASK relocations. R600 only */

        /* DB registers. */
        uint64_t db_depth_base;         /* DB_Z_READ/WRITE_BASE (EG and later) or DB_DEPTH_BASE (r600) */
        uint64_t db_stencil_base;       /* EG and later */
        uint64_t db_htile_data_base;
        unsigned db_depth_info;         /* R600 only, then SI and later */
        unsigned db_z_info;             /* EG and later */
        unsigned db_z_info2;            /* GFX9+ */
        unsigned db_depth_view;
        unsigned db_depth_size;
        unsigned db_depth_slice;        /* EG and later */
        unsigned db_stencil_info;       /* EG and later */
        unsigned db_stencil_info2;      /* GFX9+ */
        unsigned db_prefetch_limit;     /* R600 only */
        unsigned db_htile_surface;
        unsigned db_preload_control;    /* EG and later */
};

struct r600_mmio_counter {
        unsigned busy;
        unsigned idle;
};

union r600_mmio_counters {
        struct {
                /* For global GPU load including SDMA. */
                struct r600_mmio_counter gpu;

                /* GRBM_STATUS */
                struct r600_mmio_counter spi;
                struct r600_mmio_counter gui;
                struct r600_mmio_counter ta;
                struct r600_mmio_counter gds;
                struct r600_mmio_counter vgt;
                struct r600_mmio_counter ia;
                struct r600_mmio_counter sx;
                struct r600_mmio_counter wd;
                struct r600_mmio_counter bci;
                struct r600_mmio_counter sc;
                struct r600_mmio_counter pa;
                struct r600_mmio_counter db;
                struct r600_mmio_counter cp;
                struct r600_mmio_counter cb;

                /* SRBM_STATUS2 */
                struct r600_mmio_counter sdma;

                /* CP_STAT */
                struct r600_mmio_counter pfp;
                struct r600_mmio_counter meq;
                struct r600_mmio_counter me;
                struct r600_mmio_counter surf_sync;
                struct r600_mmio_counter cp_dma;
                struct r600_mmio_counter scratch_ram;
        } named;
        unsigned array[0];
};

struct r600_memory_object {
        struct pipe_memory_object       b;
        struct pb_buffer                *buf;
        uint32_t                        stride;
        uint32_t                        offset;
};

struct r600_common_screen {
        struct pipe_screen              b;
        struct radeon_winsys            *ws;
        enum radeon_family              family;
        enum chip_class                 chip_class;
        struct radeon_info              info;
        uint64_t                        debug_flags;
        bool                            has_cp_dma;
        bool                            has_streamout;
        bool                            has_rbplus;     /* if RB+ registers exist */
        bool                            rbplus_allowed; /* if RB+ is allowed */

        struct disk_cache               *disk_shader_cache;

        struct slab_parent_pool         pool_transfers;

        /* Texture filter settings. */
        int                             force_aniso; /* -1 = disabled */

        /* Auxiliary context. Mainly used to initialize resources.
         * It must be locked prior to using and flushed before unlocking. */
        struct pipe_context             *aux_context;
        mtx_t                           aux_context_lock;

        /* This must be in the screen, because UE4 uses one context for
         * compilation and another one for rendering.
         */
        unsigned                        num_compilations;
        /* Along with ST_DEBUG=precompile, this should show if applications
         * are loading shaders on demand. This is a monotonic counter.
         */
        unsigned                        num_shaders_created;
        unsigned                        num_shader_cache_hits;

        /* GPU load thread. */
        mtx_t                           gpu_load_mutex;
        thrd_t                          gpu_load_thread;
        union r600_mmio_counters        mmio_counters;
        volatile unsigned               gpu_load_stop_thread; /* bool */

        char                            renderer_string[100];

        /* Performance counters. */
        struct r600_perfcounters        *perfcounters;

        /* If pipe_screen wants to recompute and re-emit the framebuffer,
         * sampler, and image states of all contexts, it should atomically
         * increment this.
         *
         * Each context will compare this with its own last known value of
         * the counter before drawing and re-emit the states accordingly.
         */
        unsigned                        dirty_tex_counter;

        /* Atomically increment this counter when an existing texture's
         * metadata is enabled or disabled in a way that requires changing
         * contexts' compressed texture binding masks.
         */
        unsigned                        compressed_colortex_counter;

        struct {
                /* Context flags to set so that all writes from earlier jobs
                 * in the CP are seen by L2 clients.
                 */
                unsigned cp_to_L2;

                /* Context flags to set so that all writes from earlier jobs
                 * that end in L2 are seen by CP.
                 */
                unsigned L2_to_cp;

                /* Context flags to set so that all writes from earlier
                 * compute jobs are seen by L2 clients.
                 */
                unsigned compute_to_L2;
        } barrier_flags;

        void (*query_opaque_metadata)(struct r600_common_screen *rscreen,
                                      struct r600_texture *rtex,
                                      struct radeon_bo_metadata *md);

        void (*apply_opaque_metadata)(struct r600_common_screen *rscreen,
                                    struct r600_texture *rtex,
                                    struct radeon_bo_metadata *md);
};

/* This encapsulates a state or an operation which can emitted into the GPU
 * command stream. */
struct r600_atom {
        void (*emit)(struct r600_common_context *ctx, struct r600_atom *state);
        unsigned                num_dw;
        unsigned short          id;
};

struct r600_so_target {
        struct pipe_stream_output_target b;

        /* The buffer where BUFFER_FILLED_SIZE is stored. */
        struct r600_resource    *buf_filled_size;
        unsigned                buf_filled_size_offset;
        bool                    buf_filled_size_valid;

        unsigned                stride_in_dw;
};

struct r600_streamout {
        struct r600_atom                begin_atom;
        bool                            begin_emitted;
        unsigned                        num_dw_for_end;

        unsigned                        enabled_mask;
        unsigned                        num_targets;
        struct r600_so_target           *targets[PIPE_MAX_SO_BUFFERS];

        unsigned                        append_bitmask;
        bool                            suspended;

        /* External state which comes from the vertex shader,
         * it must be set explicitly when binding a shader. */
        uint16_t                        *stride_in_dw;
        unsigned                        enabled_stream_buffers_mask; /* stream0 buffers0-3 in 4 LSB */

        /* The state of VGT_STRMOUT_BUFFER_(CONFIG|EN). */
        unsigned                        hw_enabled_mask;

        /* The state of VGT_STRMOUT_(CONFIG|EN). */
        struct r600_atom                enable_atom;
        bool                            streamout_enabled;
        bool                            prims_gen_query_enabled;
        int                             num_prims_gen_queries;
};

struct r600_signed_scissor {
        int minx;
        int miny;
        int maxx;
        int maxy;
};

struct r600_scissors {
        struct r600_atom                atom;
        unsigned                        dirty_mask;
        struct pipe_scissor_state       states[R600_MAX_VIEWPORTS];
};

struct r600_viewports {
        struct r600_atom                atom;
        unsigned                        dirty_mask;
        unsigned                        depth_range_dirty_mask;
        struct pipe_viewport_state      states[R600_MAX_VIEWPORTS];
        struct r600_signed_scissor      as_scissor[R600_MAX_VIEWPORTS];
};

struct r600_ring {
        struct radeon_winsys_cs         *cs;
        void (*flush)(void *ctx, unsigned flags,
                      struct pipe_fence_handle **fence);
};

/* Saved CS data for debugging features. */
struct radeon_saved_cs {
        uint32_t                        *ib;
        unsigned                        num_dw;

        struct radeon_bo_list_item      *bo_list;
        unsigned                        bo_count;
};

struct r600_common_context {
        struct pipe_context b; /* base class */

        struct r600_common_screen       *screen;
        struct radeon_winsys            *ws;
        struct radeon_winsys_ctx        *ctx;
        enum radeon_family              family;
        enum chip_class                 chip_class;
        struct r600_ring                gfx;
        struct r600_ring                dma;
        struct pipe_fence_handle        *last_gfx_fence;
        struct pipe_fence_handle        *last_sdma_fence;
        struct r600_resource            *eop_bug_scratch;
        unsigned                        num_gfx_cs_flushes;
        unsigned                        initial_gfx_cs_size;
        unsigned                        gpu_reset_counter;
        unsigned                        last_dirty_tex_counter;
        unsigned                        last_compressed_colortex_counter;
        unsigned                        last_num_draw_calls;

        struct threaded_context         *tc;
        struct u_suballocator           *allocator_zeroed_memory;
        struct slab_child_pool          pool_transfers;
        struct slab_child_pool          pool_transfers_unsync; /* for threaded_context */

        /* Current unaccounted memory usage. */
        uint64_t                        vram;
        uint64_t                        gtt;

        /* States. */
        struct r600_streamout           streamout;
        struct r600_scissors            scissors;
        struct r600_viewports           viewports;
        bool                            scissor_enabled;
        bool                            clip_halfz;
        bool                            vs_writes_viewport_index;
        bool                            vs_disables_clipping_viewport;

        /* Additional context states. */
        unsigned flags; /* flush flags */

        /* Queries. */
        /* Maintain the list of active queries for pausing between IBs. */
        int                             num_occlusion_queries;
        int                             num_perfect_occlusion_queries;
        struct list_head                active_queries;
        unsigned                        num_cs_dw_queries_suspend;
        /* Misc stats. */
        unsigned                        num_draw_calls;
        unsigned                        num_decompress_calls;
        unsigned                        num_mrt_draw_calls;
        unsigned                        num_prim_restart_calls;
        unsigned                        num_spill_draw_calls;
        unsigned                        num_compute_calls;
        unsigned                        num_spill_compute_calls;
        unsigned                        num_dma_calls;
        unsigned                        num_cp_dma_calls;
        unsigned                        num_vs_flushes;
        unsigned                        num_ps_flushes;
        unsigned                        num_cs_flushes;
        unsigned                        num_cb_cache_flushes;
        unsigned                        num_db_cache_flushes;
        unsigned                        num_L2_invalidates;
        unsigned                        num_L2_writebacks;
        unsigned                        num_resident_handles;
        uint64_t                        num_alloc_tex_transfer_bytes;
        unsigned                        last_tex_ps_draw_ratio; /* for query */

        /* Render condition. */
        struct r600_atom                render_cond_atom;
        struct pipe_query               *render_cond;
        unsigned                        render_cond_mode;
        bool                            render_cond_invert;
        bool                            render_cond_force_off; /* for u_blitter */

        /* MSAA sample locations.
         * The first index is the sample index.
         * The second index is the coordinate: X, Y. */
        float                           sample_locations_1x[1][2];
        float                           sample_locations_2x[2][2];
        float                           sample_locations_4x[4][2];
        float                           sample_locations_8x[8][2];
        float                           sample_locations_16x[16][2];

        /* Statistics gathering for the DCC enablement heuristic. It can't be
         * in r600_texture because r600_texture can be shared by multiple
         * contexts. This is for back buffers only. We shouldn't get too many
         * of those.
         *
         * X11 DRI3 rotates among a finite set of back buffers. They should
         * all fit in this array. If they don't, separate DCC might never be
         * enabled by DCC stat gathering.
         */
        struct {
                struct r600_texture             *tex;
                /* Query queue: 0 = usually active, 1 = waiting, 2 = readback. */
                struct pipe_query               *ps_stats[3];
                /* If all slots are used and another slot is needed,
                 * the least recently used slot is evicted based on this. */
                int64_t                         last_use_timestamp;
                bool                            query_active;
        } dcc_stats[5];

        struct pipe_debug_callback      debug;
        struct pipe_device_reset_callback device_reset_callback;
        struct u_log_context            *log;

        void                            *query_result_shader;

        /* Copy one resource to another using async DMA. */
        void (*dma_copy)(struct pipe_context *ctx,
                         struct pipe_resource *dst,
                         unsigned dst_level,
                         unsigned dst_x, unsigned dst_y, unsigned dst_z,
                         struct pipe_resource *src,
                         unsigned src_level,
                         const struct pipe_box *src_box);

        void (*dma_clear_buffer)(struct pipe_context *ctx, struct pipe_resource *dst,
                                 uint64_t offset, uint64_t size, unsigned value);

        void (*clear_buffer)(struct pipe_context *ctx, struct pipe_resource *dst,
                             uint64_t offset, uint64_t size, unsigned value,
                             enum r600_coherency coher);

        void (*blit_decompress_depth)(struct pipe_context *ctx,
                                      struct r600_texture *texture,
                                      struct r600_texture *staging,
                                      unsigned first_level, unsigned last_level,
                                      unsigned first_layer, unsigned last_layer,
                                      unsigned first_sample, unsigned last_sample);

        void (*decompress_dcc)(struct pipe_context *ctx,
                               struct r600_texture *rtex);

        /* Reallocate the buffer and update all resource bindings where
         * the buffer is bound, including all resource descriptors. */
        void (*invalidate_buffer)(struct pipe_context *ctx, struct pipe_resource *buf);

        /* Update all resource bindings where the buffer is bound, including
         * all resource descriptors. This is invalidate_buffer without
         * the invalidation. */
        void (*rebind_buffer)(struct pipe_context *ctx, struct pipe_resource *buf,
                              uint64_t old_gpu_address);

        /* Enable or disable occlusion queries. */
        void (*set_occlusion_query_state)(struct pipe_context *ctx,
                                          bool old_enable,
                                          bool old_perfect_enable);

        void (*save_qbo_state)(struct pipe_context *ctx, struct r600_qbo_state *st);

        /* This ensures there is enough space in the command stream. */
        void (*need_gfx_cs_space)(struct pipe_context *ctx, unsigned num_dw,
                                  bool include_draw_vbo);

        void (*set_atom_dirty)(struct r600_common_context *ctx,
                               struct r600_atom *atom, bool dirty);

        void (*check_vm_faults)(struct r600_common_context *ctx,
                                struct radeon_saved_cs *saved,
                                enum ring_type ring);
};

/* r600_buffer_common.c */
bool si_rings_is_buffer_referenced(struct r600_common_context *ctx,
                                   struct pb_buffer *buf,
                                   enum radeon_bo_usage usage);
void *si_buffer_map_sync_with_rings(struct r600_common_context *ctx,
                                    struct r600_resource *resource,
                                    unsigned usage);
void si_buffer_subdata(struct pipe_context *ctx,
                       struct pipe_resource *buffer,
                       unsigned usage, unsigned offset,
                       unsigned size, const void *data);
void si_init_resource_fields(struct r600_common_screen *rscreen,
                             struct r600_resource *res,
                             uint64_t size, unsigned alignment);
bool si_alloc_resource(struct r600_common_screen *rscreen,
                       struct r600_resource *res);
struct pipe_resource *si_buffer_create(struct pipe_screen *screen,
                                       const struct pipe_resource *templ,
                                       unsigned alignment);
struct pipe_resource *si_aligned_buffer_create(struct pipe_screen *screen,
                                               unsigned flags,
                                               unsigned usage,
                                               unsigned size,
                                               unsigned alignment);
struct pipe_resource *
si_buffer_from_user_memory(struct pipe_screen *screen,
                           const struct pipe_resource *templ,
                           void *user_memory);
void si_invalidate_resource(struct pipe_context *ctx,
                            struct pipe_resource *resource);
void si_replace_buffer_storage(struct pipe_context *ctx,
                               struct pipe_resource *dst,
                               struct pipe_resource *src);

/* r600_common_pipe.c */
void si_gfx_write_event_eop(struct r600_common_context *ctx,
                            unsigned event, unsigned event_flags,
                            unsigned data_sel,
                            struct r600_resource *buf, uint64_t va,
                            uint32_t new_fence, unsigned query_type);
unsigned si_gfx_write_fence_dwords(struct r600_common_screen *screen);
void si_gfx_wait_fence(struct r600_common_context *ctx,
                       uint64_t va, uint32_t ref, uint32_t mask);
void si_draw_rectangle(struct blitter_context *blitter,
                       int x1, int y1, int x2, int y2,
                       float depth, unsigned num_instances,
                       enum blitter_attrib_type type,
                       const union blitter_attrib *attrib);
bool si_common_screen_init(struct r600_common_screen *rscreen,
                           struct radeon_winsys *ws);
void si_destroy_common_screen(struct r600_common_screen *rscreen);
void si_preflush_suspend_features(struct r600_common_context *ctx);
void si_postflush_resume_features(struct r600_common_context *ctx);
bool si_common_context_init(struct r600_common_context *rctx,
                            struct r600_common_screen *rscreen,
                            unsigned context_flags);
void si_common_context_cleanup(struct r600_common_context *rctx);
bool si_can_dump_shader(struct r600_common_screen *rscreen,
                        unsigned processor);
bool si_extra_shader_checks(struct r600_common_screen *rscreen,
                            unsigned processor);
void si_screen_clear_buffer(struct r600_common_screen *rscreen, struct pipe_resource *dst,
                            uint64_t offset, uint64_t size, unsigned value);
struct pipe_resource *si_resource_create_common(struct pipe_screen *screen,
                                                const struct pipe_resource *templ);
const char *si_get_llvm_processor_name(enum radeon_family family);
void si_need_dma_space(struct r600_common_context *ctx, unsigned num_dw,
                       struct r600_resource *dst, struct r600_resource *src);
void si_save_cs(struct radeon_winsys *ws, struct radeon_winsys_cs *cs,
                struct radeon_saved_cs *saved, bool get_buffer_list);
void si_clear_saved_cs(struct radeon_saved_cs *saved);
bool si_check_device_reset(struct r600_common_context *rctx);

/* r600_gpu_load.c */
void si_gpu_load_kill_thread(struct r600_common_screen *rscreen);
uint64_t si_begin_counter(struct r600_common_screen *rscreen, unsigned type);
unsigned si_end_counter(struct r600_common_screen *rscreen, unsigned type,
                        uint64_t begin);

/* r600_perfcounters.c */
void si_perfcounters_destroy(struct r600_common_screen *rscreen);

/* r600_query.c */
void si_init_screen_query_functions(struct r600_common_screen *rscreen);
void si_init_query_functions(struct r600_common_context *rctx);
void si_suspend_queries(struct r600_common_context *ctx);
void si_resume_queries(struct r600_common_context *ctx);

/* r600_streamout.c */
void si_streamout_buffers_dirty(struct r600_common_context *rctx);
void si_common_set_streamout_targets(struct pipe_context *ctx,
                                     unsigned num_targets,
                                     struct pipe_stream_output_target **targets,
                                     const unsigned *offset);
void si_emit_streamout_end(struct r600_common_context *rctx);
void si_update_prims_generated_query_state(struct r600_common_context *rctx,
                                           unsigned type, int diff);
void si_streamout_init(struct r600_common_context *rctx);

/* r600_test_dma.c */
void si_test_dma(struct r600_common_screen *rscreen);

/* r600_texture.c */
bool si_prepare_for_dma_blit(struct r600_common_context *rctx,
                             struct r600_texture *rdst,
                             unsigned dst_level, unsigned dstx,
                             unsigned dsty, unsigned dstz,
                             struct r600_texture *rsrc,
                             unsigned src_level,
                             const struct pipe_box *src_box);
void si_texture_get_fmask_info(struct r600_common_screen *rscreen,
                               struct r600_texture *rtex,
                               unsigned nr_samples,
                               struct r600_fmask_info *out);
bool si_init_flushed_depth_texture(struct pipe_context *ctx,
                                   struct pipe_resource *texture,
                                   struct r600_texture **staging);
void si_print_texture_info(struct r600_common_screen *rscreen,
                           struct r600_texture *rtex, struct u_log_context *log);
struct pipe_resource *si_texture_create(struct pipe_screen *screen,
                                        const struct pipe_resource *templ);
bool vi_dcc_formats_compatible(enum pipe_format format1,
                               enum pipe_format format2);
bool vi_dcc_formats_are_incompatible(struct pipe_resource *tex,
                                     unsigned level,
                                     enum pipe_format view_format);
void vi_disable_dcc_if_incompatible_format(struct r600_common_context *rctx,
                                           struct pipe_resource *tex,
                                           unsigned level,
                                           enum pipe_format view_format);
struct pipe_surface *si_create_surface_custom(struct pipe_context *pipe,
                                              struct pipe_resource *texture,
                                              const struct pipe_surface *templ,
                                              unsigned width0, unsigned height0,
                                              unsigned width, unsigned height);
unsigned si_translate_colorswap(enum pipe_format format, bool do_endian_swap);
void vi_separate_dcc_start_query(struct pipe_context *ctx,
                                 struct r600_texture *tex);
void vi_separate_dcc_stop_query(struct pipe_context *ctx,
                                struct r600_texture *tex);
void vi_separate_dcc_process_and_reset_stats(struct pipe_context *ctx,
                                             struct r600_texture *tex);
void vi_dcc_clear_level(struct r600_common_context *rctx,
                        struct r600_texture *rtex,
                        unsigned level, unsigned clear_value);
void si_do_fast_color_clear(struct r600_common_context *rctx,
                            struct pipe_framebuffer_state *fb,
                            struct r600_atom *fb_state,
                            unsigned *buffers, ubyte *dirty_cbufs,
                            const union pipe_color_union *color);
bool si_texture_disable_dcc(struct r600_common_context *rctx,
                            struct r600_texture *rtex);
void si_init_screen_texture_functions(struct r600_common_screen *rscreen);
void si_init_context_texture_functions(struct r600_common_context *rctx);

/* r600_viewport.c */
void si_apply_scissor_bug_workaround(struct r600_common_context *rctx,
                                     struct pipe_scissor_state *scissor);
void si_viewport_set_rast_deps(struct r600_common_context *rctx,
                               bool scissor_enable, bool clip_halfz);
void si_update_vs_writes_viewport_index(struct r600_common_context *rctx,
                                        struct tgsi_shader_info *info);
void si_init_viewport_functions(struct r600_common_context *rctx);

/* cayman_msaa.c */
void si_get_sample_position(struct pipe_context *ctx, unsigned sample_count,
                            unsigned sample_index, float *out_value);
void si_init_msaa(struct pipe_context *ctx);
void si_common_emit_msaa_sample_locs(struct radeon_winsys_cs *cs, int nr_samples);
void si_common_emit_msaa_config(struct radeon_winsys_cs *cs, int nr_samples,
                                int ps_iter_samples, int overrast_samples,
                                unsigned sc_mode_cntl_1);


/* Inline helpers. */

static inline struct r600_resource *r600_resource(struct pipe_resource *r)
{
        return (struct r600_resource*)r;
}

static inline void
r600_resource_reference(struct r600_resource **ptr, struct r600_resource *res)
{
        pipe_resource_reference((struct pipe_resource **)ptr,
                                (struct pipe_resource *)res);
}

static inline void
r600_texture_reference(struct r600_texture **ptr, struct r600_texture *res)
{
        pipe_resource_reference((struct pipe_resource **)ptr, &res->resource.b.b);
}

static inline void
r600_context_add_resource_size(struct pipe_context *ctx, struct pipe_resource *r)
{
        struct r600_common_context *rctx = (struct r600_common_context *)ctx;
        struct r600_resource *res = (struct r600_resource *)r;

        if (res) {
                /* Add memory usage for need_gfx_cs_space */
                rctx->vram += res->vram_usage;
                rctx->gtt += res->gart_usage;
        }
}

static inline bool r600_get_strmout_en(struct r600_common_context *rctx)
{
        return rctx->streamout.streamout_enabled ||
               rctx->streamout.prims_gen_query_enabled;
}

#define     SQ_TEX_XY_FILTER_POINT                         0x00
#define     SQ_TEX_XY_FILTER_BILINEAR                      0x01
#define     SQ_TEX_XY_FILTER_ANISO_POINT                   0x02
#define     SQ_TEX_XY_FILTER_ANISO_BILINEAR                0x03

static inline unsigned eg_tex_filter(unsigned filter, unsigned max_aniso)
{
        if (filter == PIPE_TEX_FILTER_LINEAR)
                return max_aniso > 1 ? SQ_TEX_XY_FILTER_ANISO_BILINEAR
                                     : SQ_TEX_XY_FILTER_BILINEAR;
        else
                return max_aniso > 1 ? SQ_TEX_XY_FILTER_ANISO_POINT
                                     : SQ_TEX_XY_FILTER_POINT;
}

static inline unsigned r600_tex_aniso_filter(unsigned filter)
{
        if (filter < 2)
                return 0;
        if (filter < 4)
                return 1;
        if (filter < 8)
                return 2;
        if (filter < 16)
                return 3;
        return 4;
}

static inline unsigned r600_wavefront_size(enum radeon_family family)
{
        switch (family) {
        case CHIP_RV610:
        case CHIP_RS780:
        case CHIP_RV620:
        case CHIP_RS880:
                return 16;
        case CHIP_RV630:
        case CHIP_RV635:
        case CHIP_RV730:
        case CHIP_RV710:
        case CHIP_PALM:
        case CHIP_CEDAR:
                return 32;
        default:
                return 64;
        }
}

static inline enum radeon_bo_priority
r600_get_sampler_view_priority(struct r600_resource *res)
{
        if (res->b.b.target == PIPE_BUFFER)
                return RADEON_PRIO_SAMPLER_BUFFER;

        if (res->b.b.nr_samples > 1)
                return RADEON_PRIO_SAMPLER_TEXTURE_MSAA;

        return RADEON_PRIO_SAMPLER_TEXTURE;
}

static inline bool
r600_can_sample_zs(struct r600_texture *tex, bool stencil_sampler)
{
        return (stencil_sampler && tex->can_sample_s) ||
               (!stencil_sampler && tex->can_sample_z);
}

static inline bool
vi_dcc_enabled(struct r600_texture *tex, unsigned level)
{
        return tex->dcc_offset && level < tex->surface.num_dcc_levels;
}

static inline bool
r600_htile_enabled(struct r600_texture *tex, unsigned level)
{
        return tex->htile_offset && level == 0;
}

static inline bool
vi_tc_compat_htile_enabled(struct r600_texture *tex, unsigned level)
{
        assert(!tex->tc_compatible_htile || tex->htile_offset);
        return tex->tc_compatible_htile && level == 0;
}

#define COMPUTE_DBG(rscreen, fmt, args...) \
        do { \
                if ((rscreen->b.debug_flags & DBG_COMPUTE)) fprintf(stderr, fmt, ##args); \
        } while (0);

#define R600_ERR(fmt, args...) \
        fprintf(stderr, "EE %s:%d %s - " fmt, __FILE__, __LINE__, __func__, ##args)

/* For MSAA sample positions. */
#define FILL_SREG(s0x, s0y, s1x, s1y, s2x, s2y, s3x, s3y)  \
        (((s0x) & 0xf) | (((unsigned)(s0y) & 0xf) << 4) |                  \
        (((unsigned)(s1x) & 0xf) << 8) | (((unsigned)(s1y) & 0xf) << 12) |         \
        (((unsigned)(s2x) & 0xf) << 16) | (((unsigned)(s2y) & 0xf) << 20) |        \
         (((unsigned)(s3x) & 0xf) << 24) | (((unsigned)(s3y) & 0xf) << 28))

static inline int S_FIXED(float value, unsigned frac_bits)
{
        return value * (1 << frac_bits);
}

#endif