gallium: change comments to remove 'state tracker'

[mesa.git] / src / gallium / drivers / r600 / r600_pipe_common.c

/*
 * 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>
 *
 */

#include "r600_pipe_common.h"
#include "r600_cs.h"
#include "tgsi/tgsi_parse.h"
#include "compiler/nir/nir.h"
#include "util/list.h"
#include "util/u_draw_quad.h"
#include "util/u_memory.h"
#include "util/format/u_format_s3tc.h"
#include "util/u_upload_mgr.h"
#include "util/os_time.h"
#include "vl/vl_decoder.h"
#include "vl/vl_video_buffer.h"
#include "radeon_video.h"
#include <inttypes.h>
#include <sys/utsname.h>
#include <stdlib.h>

#ifdef LLVM_AVAILABLE
#include <llvm-c/TargetMachine.h>
#endif

struct r600_multi_fence {
        struct pipe_reference reference;
        struct pipe_fence_handle *gfx;
        struct pipe_fence_handle *sdma;

        /* If the context wasn't flushed at fence creation, this is non-NULL. */
        struct {
                struct r600_common_context *ctx;
                unsigned ib_index;
        } gfx_unflushed;
};

/*
 * pipe_context
 */

/**
 * Write an EOP event.
 *
 * \param event         EVENT_TYPE_*
 * \param event_flags   Optional cache flush flags (TC)
 * \param data_sel      1 = fence, 3 = timestamp
 * \param buf           Buffer
 * \param va            GPU address
 * \param old_value     Previous fence value (for a bug workaround)
 * \param new_value     Fence value to write for this event.
 */
void r600_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)
{
        struct radeon_cmdbuf *cs = ctx->gfx.cs;
        unsigned op = EVENT_TYPE(event) |
                      EVENT_INDEX(5) |
                      event_flags;
        unsigned sel = EOP_DATA_SEL(data_sel);

        radeon_emit(cs, PKT3(PKT3_EVENT_WRITE_EOP, 4, 0));
        radeon_emit(cs, op);
        radeon_emit(cs, va);
        radeon_emit(cs, ((va >> 32) & 0xffff) | sel);
        radeon_emit(cs, new_fence); /* immediate data */
        radeon_emit(cs, 0); /* unused */

        if (buf)
                r600_emit_reloc(ctx, &ctx->gfx, buf, RADEON_USAGE_WRITE,
                                RADEON_PRIO_QUERY);
}

unsigned r600_gfx_write_fence_dwords(struct r600_common_screen *screen)
{
        unsigned dwords = 6;

        if (!screen->info.r600_has_virtual_memory)
                dwords += 2;

        return dwords;
}

void r600_gfx_wait_fence(struct r600_common_context *ctx,
                         struct r600_resource *buf,
                         uint64_t va, uint32_t ref, uint32_t mask)
{
        struct radeon_cmdbuf *cs = ctx->gfx.cs;

        radeon_emit(cs, PKT3(PKT3_WAIT_REG_MEM, 5, 0));
        radeon_emit(cs, WAIT_REG_MEM_EQUAL | WAIT_REG_MEM_MEM_SPACE(1));
        radeon_emit(cs, va);
        radeon_emit(cs, va >> 32);
        radeon_emit(cs, ref); /* reference value */
        radeon_emit(cs, mask); /* mask */
        radeon_emit(cs, 4); /* poll interval */

        if (buf)
                r600_emit_reloc(ctx, &ctx->gfx, buf, RADEON_USAGE_READ,
                                RADEON_PRIO_QUERY);
}

void r600_draw_rectangle(struct blitter_context *blitter,
                         void *vertex_elements_cso,
                         blitter_get_vs_func get_vs,
                         int x1, int y1, int x2, int y2,
                         float depth, unsigned num_instances,
                         enum blitter_attrib_type type,
                         const union blitter_attrib *attrib)
{
        struct r600_common_context *rctx =
                (struct r600_common_context*)util_blitter_get_pipe(blitter);
        struct pipe_viewport_state viewport;
        struct pipe_resource *buf = NULL;
        unsigned offset = 0;
        float *vb;

        rctx->b.bind_vertex_elements_state(&rctx->b, vertex_elements_cso);
        rctx->b.bind_vs_state(&rctx->b, get_vs(blitter));

        /* Some operations (like color resolve on r6xx) don't work
         * with the conventional primitive types.
         * One that works is PT_RECTLIST, which we use here. */

        /* setup viewport */
        viewport.scale[0] = 1.0f;
        viewport.scale[1] = 1.0f;
        viewport.scale[2] = 1.0f;
        viewport.translate[0] = 0.0f;
        viewport.translate[1] = 0.0f;
        viewport.translate[2] = 0.0f;
        rctx->b.set_viewport_states(&rctx->b, 0, 1, &viewport);

        /* Upload vertices. The hw rectangle has only 3 vertices,
         * The 4th one is derived from the first 3.
         * The vertex specification should match u_blitter's vertex element state. */
        u_upload_alloc(rctx->b.stream_uploader, 0, sizeof(float) * 24,
                       rctx->screen->info.tcc_cache_line_size,
                       &offset, &buf, (void**)&vb);
        if (!buf)
                return;

        vb[0] = x1;
        vb[1] = y1;
        vb[2] = depth;
        vb[3] = 1;

        vb[8] = x1;
        vb[9] = y2;
        vb[10] = depth;
        vb[11] = 1;

        vb[16] = x2;
        vb[17] = y1;
        vb[18] = depth;
        vb[19] = 1;

        switch (type) {
        case UTIL_BLITTER_ATTRIB_COLOR:
                memcpy(vb+4, attrib->color, sizeof(float)*4);
                memcpy(vb+12, attrib->color, sizeof(float)*4);
                memcpy(vb+20, attrib->color, sizeof(float)*4);
                break;
        case UTIL_BLITTER_ATTRIB_TEXCOORD_XYZW:
        case UTIL_BLITTER_ATTRIB_TEXCOORD_XY:
                vb[6] = vb[14] = vb[22] = attrib->texcoord.z;
                vb[7] = vb[15] = vb[23] = attrib->texcoord.w;
                /* fall through */
                vb[4] = attrib->texcoord.x1;
                vb[5] = attrib->texcoord.y1;
                vb[12] = attrib->texcoord.x1;
                vb[13] = attrib->texcoord.y2;
                vb[20] = attrib->texcoord.x2;
                vb[21] = attrib->texcoord.y1;
                break;
        default:; /* Nothing to do. */
        }

        /* draw */
        struct pipe_vertex_buffer vbuffer = {};
        vbuffer.buffer.resource = buf;
        vbuffer.stride = 2 * 4 * sizeof(float); /* vertex size */
        vbuffer.buffer_offset = offset;

        rctx->b.set_vertex_buffers(&rctx->b, blitter->vb_slot, 1, &vbuffer);
        util_draw_arrays_instanced(&rctx->b, R600_PRIM_RECTANGLE_LIST, 0, 3,
                                   0, num_instances);
        pipe_resource_reference(&buf, NULL);
}

static void r600_dma_emit_wait_idle(struct r600_common_context *rctx)
{
        struct radeon_cmdbuf *cs = rctx->dma.cs;

        if (rctx->chip_class >= EVERGREEN)
                radeon_emit(cs, 0xf0000000); /* NOP */
        else {
                /* TODO: R600-R700 should use the FENCE packet.
                 * CS checker support is required. */
        }
}

void r600_need_dma_space(struct r600_common_context *ctx, unsigned num_dw,
                         struct r600_resource *dst, struct r600_resource *src)
{
        uint64_t vram = ctx->dma.cs->used_vram;
        uint64_t gtt = ctx->dma.cs->used_gart;

        if (dst) {
                vram += dst->vram_usage;
                gtt += dst->gart_usage;
        }
        if (src) {
                vram += src->vram_usage;
                gtt += src->gart_usage;
        }

        /* Flush the GFX IB if DMA depends on it. */
        if (radeon_emitted(ctx->gfx.cs, ctx->initial_gfx_cs_size) &&
            ((dst &&
              ctx->ws->cs_is_buffer_referenced(ctx->gfx.cs, dst->buf,
                                               RADEON_USAGE_READWRITE)) ||
             (src &&
              ctx->ws->cs_is_buffer_referenced(ctx->gfx.cs, src->buf,
                                               RADEON_USAGE_WRITE))))
                ctx->gfx.flush(ctx, PIPE_FLUSH_ASYNC, NULL);

        /* Flush if there's not enough space, or if the memory usage per IB
         * is too large.
         *
         * IBs using too little memory are limited by the IB submission overhead.
         * IBs using too much memory are limited by the kernel/TTM overhead.
         * Too long IBs create CPU-GPU pipeline bubbles and add latency.
         *
         * This heuristic makes sure that DMA requests are executed
         * very soon after the call is made and lowers memory usage.
         * It improves texture upload performance by keeping the DMA
         * engine busy while uploads are being submitted.
         */
        num_dw++; /* for emit_wait_idle below */
        if (!ctx->ws->cs_check_space(ctx->dma.cs, num_dw, false) ||
            ctx->dma.cs->used_vram + ctx->dma.cs->used_gart > 64 * 1024 * 1024 ||
            !radeon_cs_memory_below_limit(ctx->screen, ctx->dma.cs, vram, gtt)) {
                ctx->dma.flush(ctx, PIPE_FLUSH_ASYNC, NULL);
                assert((num_dw + ctx->dma.cs->current.cdw) <= ctx->dma.cs->current.max_dw);
        }

        /* Wait for idle if either buffer has been used in the IB before to
         * prevent read-after-write hazards.
         */
        if ((dst &&
             ctx->ws->cs_is_buffer_referenced(ctx->dma.cs, dst->buf,
                                              RADEON_USAGE_READWRITE)) ||
            (src &&
             ctx->ws->cs_is_buffer_referenced(ctx->dma.cs, src->buf,
                                              RADEON_USAGE_WRITE)))
                r600_dma_emit_wait_idle(ctx);

        /* If GPUVM is not supported, the CS checker needs 2 entries
         * in the buffer list per packet, which has to be done manually.
         */
        if (ctx->screen->info.r600_has_virtual_memory) {
                if (dst)
                        radeon_add_to_buffer_list(ctx, &ctx->dma, dst,
                                                  RADEON_USAGE_WRITE, 0);
                if (src)
                        radeon_add_to_buffer_list(ctx, &ctx->dma, src,
                                                  RADEON_USAGE_READ, 0);
        }

        /* this function is called before all DMA calls, so increment this. */
        ctx->num_dma_calls++;
}

void r600_preflush_suspend_features(struct r600_common_context *ctx)
{
        /* suspend queries */
        if (!list_is_empty(&ctx->active_queries))
                r600_suspend_queries(ctx);

        ctx->streamout.suspended = false;
        if (ctx->streamout.begin_emitted) {
                r600_emit_streamout_end(ctx);
                ctx->streamout.suspended = true;
        }
}

void r600_postflush_resume_features(struct r600_common_context *ctx)
{
        if (ctx->streamout.suspended) {
                ctx->streamout.append_bitmask = ctx->streamout.enabled_mask;
                r600_streamout_buffers_dirty(ctx);
        }

        /* resume queries */
        if (!list_is_empty(&ctx->active_queries))
                r600_resume_queries(ctx);
}

static void r600_fence_server_sync(struct pipe_context *ctx,
                                   struct pipe_fence_handle *fence)
{
        /* radeon synchronizes all rings by default and will not implement
         * fence imports.
         */
}

static void r600_flush_from_st(struct pipe_context *ctx,
                               struct pipe_fence_handle **fence,
                               unsigned flags)
{
        struct pipe_screen *screen = ctx->screen;
        struct r600_common_context *rctx = (struct r600_common_context *)ctx;
        struct radeon_winsys *ws = rctx->ws;
        struct pipe_fence_handle *gfx_fence = NULL;
        struct pipe_fence_handle *sdma_fence = NULL;
        bool deferred_fence = false;
        unsigned rflags = PIPE_FLUSH_ASYNC;

        if (flags & PIPE_FLUSH_END_OF_FRAME)
                rflags |= PIPE_FLUSH_END_OF_FRAME;

        /* DMA IBs are preambles to gfx IBs, therefore must be flushed first. */
        if (rctx->dma.cs)
                rctx->dma.flush(rctx, rflags, fence ? &sdma_fence : NULL);

        if (!radeon_emitted(rctx->gfx.cs, rctx->initial_gfx_cs_size)) {
                if (fence)
                        ws->fence_reference(&gfx_fence, rctx->last_gfx_fence);
                if (!(flags & PIPE_FLUSH_DEFERRED))
                        ws->cs_sync_flush(rctx->gfx.cs);
        } else {
                /* Instead of flushing, create a deferred fence. Constraints:
                 * - the gallium frontend must allow a deferred flush.
                 * - the gallium frontend must request a fence.
                 * Thread safety in fence_finish must be ensured by the gallium frontend.
                 */
                if (flags & PIPE_FLUSH_DEFERRED && fence) {
                        gfx_fence = rctx->ws->cs_get_next_fence(rctx->gfx.cs);
                        deferred_fence = true;
                } else {
                        rctx->gfx.flush(rctx, rflags, fence ? &gfx_fence : NULL);
                }
        }

        /* Both engines can signal out of order, so we need to keep both fences. */
        if (fence) {
                struct r600_multi_fence *multi_fence =
                        CALLOC_STRUCT(r600_multi_fence);
                if (!multi_fence) {
                        ws->fence_reference(&sdma_fence, NULL);
                        ws->fence_reference(&gfx_fence, NULL);
                        goto finish;
                }

                multi_fence->reference.count = 1;
                /* If both fences are NULL, fence_finish will always return true. */
                multi_fence->gfx = gfx_fence;
                multi_fence->sdma = sdma_fence;

                if (deferred_fence) {
                        multi_fence->gfx_unflushed.ctx = rctx;
                        multi_fence->gfx_unflushed.ib_index = rctx->num_gfx_cs_flushes;
                }

                screen->fence_reference(screen, fence, NULL);
                *fence = (struct pipe_fence_handle*)multi_fence;
        }
finish:
        if (!(flags & PIPE_FLUSH_DEFERRED)) {
                if (rctx->dma.cs)
                        ws->cs_sync_flush(rctx->dma.cs);
                ws->cs_sync_flush(rctx->gfx.cs);
        }
}

static void r600_flush_dma_ring(void *ctx, unsigned flags,
                                struct pipe_fence_handle **fence)
{
        struct r600_common_context *rctx = (struct r600_common_context *)ctx;
        struct radeon_cmdbuf *cs = rctx->dma.cs;
        struct radeon_saved_cs saved;
        bool check_vm =
                (rctx->screen->debug_flags & DBG_CHECK_VM) &&
                rctx->check_vm_faults;

        if (!radeon_emitted(cs, 0)) {
                if (fence)
                        rctx->ws->fence_reference(fence, rctx->last_sdma_fence);
                return;
        }

        if (check_vm)
                radeon_save_cs(rctx->ws, cs, &saved, true);

        rctx->ws->cs_flush(cs, flags, &rctx->last_sdma_fence);
        if (fence)
                rctx->ws->fence_reference(fence, rctx->last_sdma_fence);

        if (check_vm) {
                /* Use conservative timeout 800ms, after which we won't wait any
                 * longer and assume the GPU is hung.
                 */
                rctx->ws->fence_wait(rctx->ws, rctx->last_sdma_fence, 800*1000*1000);

                rctx->check_vm_faults(rctx, &saved, RING_DMA);
                radeon_clear_saved_cs(&saved);
        }
}

/**
 * Store a linearized copy of all chunks of \p cs together with the buffer
 * list in \p saved.
 */
void radeon_save_cs(struct radeon_winsys *ws, struct radeon_cmdbuf *cs,
                    struct radeon_saved_cs *saved, bool get_buffer_list)
{
        uint32_t *buf;
        unsigned i;

        /* Save the IB chunks. */
        saved->num_dw = cs->prev_dw + cs->current.cdw;
        saved->ib = MALLOC(4 * saved->num_dw);
        if (!saved->ib)
                goto oom;

        buf = saved->ib;
        for (i = 0; i < cs->num_prev; ++i) {
                memcpy(buf, cs->prev[i].buf, cs->prev[i].cdw * 4);
                buf += cs->prev[i].cdw;
        }
        memcpy(buf, cs->current.buf, cs->current.cdw * 4);

        if (!get_buffer_list)
                return;

        /* Save the buffer list. */
        saved->bo_count = ws->cs_get_buffer_list(cs, NULL);
        saved->bo_list = CALLOC(saved->bo_count,
                                sizeof(saved->bo_list[0]));
        if (!saved->bo_list) {
                FREE(saved->ib);
                goto oom;
        }
        ws->cs_get_buffer_list(cs, saved->bo_list);

        return;

oom:
        fprintf(stderr, "%s: out of memory\n", __func__);
        memset(saved, 0, sizeof(*saved));
}

void radeon_clear_saved_cs(struct radeon_saved_cs *saved)
{
        FREE(saved->ib);
        FREE(saved->bo_list);

        memset(saved, 0, sizeof(*saved));
}

static enum pipe_reset_status r600_get_reset_status(struct pipe_context *ctx)
{
        struct r600_common_context *rctx = (struct r600_common_context *)ctx;

        return rctx->ws->ctx_query_reset_status(rctx->ctx);
}

static void r600_set_debug_callback(struct pipe_context *ctx,
                                    const struct pipe_debug_callback *cb)
{
        struct r600_common_context *rctx = (struct r600_common_context *)ctx;

        if (cb)
                rctx->debug = *cb;
        else
                memset(&rctx->debug, 0, sizeof(rctx->debug));
}

static void r600_set_device_reset_callback(struct pipe_context *ctx,
                                           const struct pipe_device_reset_callback *cb)
{
        struct r600_common_context *rctx = (struct r600_common_context *)ctx;

        if (cb)
                rctx->device_reset_callback = *cb;
        else
                memset(&rctx->device_reset_callback, 0,
                       sizeof(rctx->device_reset_callback));
}

bool r600_check_device_reset(struct r600_common_context *rctx)
{
        enum pipe_reset_status status;

        if (!rctx->device_reset_callback.reset)
                return false;

        if (!rctx->b.get_device_reset_status)
                return false;

        status = rctx->b.get_device_reset_status(&rctx->b);
        if (status == PIPE_NO_RESET)
                return false;

        rctx->device_reset_callback.reset(rctx->device_reset_callback.data, status);
        return true;
}

static void r600_dma_clear_buffer_fallback(struct pipe_context *ctx,
                                           struct pipe_resource *dst,
                                           uint64_t offset, uint64_t size,
                                           unsigned value)
{
        struct r600_common_context *rctx = (struct r600_common_context *)ctx;

        rctx->clear_buffer(ctx, dst, offset, size, value, R600_COHERENCY_NONE);
}

static bool r600_resource_commit(struct pipe_context *pctx,
                                 struct pipe_resource *resource,
                                 unsigned level, struct pipe_box *box,
                                 bool commit)
{
        struct r600_common_context *ctx = (struct r600_common_context *)pctx;
        struct r600_resource *res = r600_resource(resource);

        /*
         * Since buffer commitment changes cannot be pipelined, we need to
         * (a) flush any pending commands that refer to the buffer we're about
         *     to change, and
         * (b) wait for threaded submit to finish, including those that were
         *     triggered by some other, earlier operation.
         */
        if (radeon_emitted(ctx->gfx.cs, ctx->initial_gfx_cs_size) &&
            ctx->ws->cs_is_buffer_referenced(ctx->gfx.cs,
                                             res->buf, RADEON_USAGE_READWRITE)) {
                ctx->gfx.flush(ctx, PIPE_FLUSH_ASYNC, NULL);
        }
        if (radeon_emitted(ctx->dma.cs, 0) &&
            ctx->ws->cs_is_buffer_referenced(ctx->dma.cs,
                                             res->buf, RADEON_USAGE_READWRITE)) {
                ctx->dma.flush(ctx, PIPE_FLUSH_ASYNC, NULL);
        }

        ctx->ws->cs_sync_flush(ctx->dma.cs);
        ctx->ws->cs_sync_flush(ctx->gfx.cs);

        assert(resource->target == PIPE_BUFFER);

        return ctx->ws->buffer_commit(res->buf, box->x, box->width, commit);
}

bool r600_common_context_init(struct r600_common_context *rctx,
                              struct r600_common_screen *rscreen,
                              unsigned context_flags)
{
        slab_create_child(&rctx->pool_transfers, &rscreen->pool_transfers);
        slab_create_child(&rctx->pool_transfers_unsync, &rscreen->pool_transfers);

        rctx->screen = rscreen;
        rctx->ws = rscreen->ws;
        rctx->family = rscreen->family;
        rctx->chip_class = rscreen->chip_class;

        rctx->b.invalidate_resource = r600_invalidate_resource;
        rctx->b.resource_commit = r600_resource_commit;
        rctx->b.transfer_map = u_transfer_map_vtbl;
        rctx->b.transfer_flush_region = u_transfer_flush_region_vtbl;
        rctx->b.transfer_unmap = u_transfer_unmap_vtbl;
        rctx->b.texture_subdata = u_default_texture_subdata;
        rctx->b.flush = r600_flush_from_st;
        rctx->b.set_debug_callback = r600_set_debug_callback;
        rctx->b.fence_server_sync = r600_fence_server_sync;
        rctx->dma_clear_buffer = r600_dma_clear_buffer_fallback;

        /* evergreen_compute.c has a special codepath for global buffers.
         * Everything else can use the direct path.
         */
        if ((rscreen->chip_class == EVERGREEN || rscreen->chip_class == CAYMAN) &&
            (context_flags & PIPE_CONTEXT_COMPUTE_ONLY))
                rctx->b.buffer_subdata = u_default_buffer_subdata;
        else
                rctx->b.buffer_subdata = r600_buffer_subdata;

        rctx->b.get_device_reset_status = r600_get_reset_status;
        rctx->b.set_device_reset_callback = r600_set_device_reset_callback;

        r600_init_context_texture_functions(rctx);
        r600_init_viewport_functions(rctx);
        r600_streamout_init(rctx);
        r600_query_init(rctx);
        cayman_init_msaa(&rctx->b);

        rctx->allocator_zeroed_memory =
                u_suballocator_create(&rctx->b, rscreen->info.gart_page_size,
                                      0, PIPE_USAGE_DEFAULT, 0, true);
        if (!rctx->allocator_zeroed_memory)
                return false;

        rctx->b.stream_uploader = u_upload_create(&rctx->b, 1024 * 1024,
                                                  0, PIPE_USAGE_STREAM, 0);
        if (!rctx->b.stream_uploader)
                return false;

        rctx->b.const_uploader = u_upload_create(&rctx->b, 128 * 1024,
                                                 0, PIPE_USAGE_DEFAULT, 0);
        if (!rctx->b.const_uploader)
                return false;

        rctx->ctx = rctx->ws->ctx_create(rctx->ws);
        if (!rctx->ctx)
                return false;

        if (rscreen->info.num_rings[RING_DMA] && !(rscreen->debug_flags & DBG_NO_ASYNC_DMA)) {
                rctx->dma.cs = rctx->ws->cs_create(rctx->ctx, RING_DMA,
                                                   r600_flush_dma_ring,
                                                   rctx, false);
                rctx->dma.flush = r600_flush_dma_ring;
        }

        return true;
}

void r600_common_context_cleanup(struct r600_common_context *rctx)
{
        if (rctx->query_result_shader)
                rctx->b.delete_compute_state(&rctx->b, rctx->query_result_shader);

        if (rctx->gfx.cs)
                rctx->ws->cs_destroy(rctx->gfx.cs);
        if (rctx->dma.cs)
                rctx->ws->cs_destroy(rctx->dma.cs);
        if (rctx->ctx)
                rctx->ws->ctx_destroy(rctx->ctx);

        if (rctx->b.stream_uploader)
                u_upload_destroy(rctx->b.stream_uploader);
        if (rctx->b.const_uploader)
                u_upload_destroy(rctx->b.const_uploader);

        slab_destroy_child(&rctx->pool_transfers);
        slab_destroy_child(&rctx->pool_transfers_unsync);

        if (rctx->allocator_zeroed_memory) {
                u_suballocator_destroy(rctx->allocator_zeroed_memory);
        }
        rctx->ws->fence_reference(&rctx->last_gfx_fence, NULL);
        rctx->ws->fence_reference(&rctx->last_sdma_fence, NULL);
        r600_resource_reference(&rctx->eop_bug_scratch, NULL);
}

/*
 * pipe_screen
 */

static const struct debug_named_value common_debug_options[] = {
        /* logging */
        { "tex", DBG_TEX, "Print texture info" },
        { "nir", DBG_NIR, "Enable experimental NIR shaders" },
        { "compute", DBG_COMPUTE, "Print compute info" },
        { "vm", DBG_VM, "Print virtual addresses when creating resources" },
        { "info", DBG_INFO, "Print driver information" },

        /* shaders */
        { "fs", DBG_FS, "Print fetch shaders" },
        { "vs", DBG_VS, "Print vertex shaders" },
        { "gs", DBG_GS, "Print geometry shaders" },
        { "ps", DBG_PS, "Print pixel shaders" },
        { "cs", DBG_CS, "Print compute shaders" },
        { "tcs", DBG_TCS, "Print tessellation control shaders" },
        { "tes", DBG_TES, "Print tessellation evaluation shaders" },
        { "noir", DBG_NO_IR, "Don't print the LLVM IR"},
        { "notgsi", DBG_NO_TGSI, "Don't print the TGSI"},
        { "noasm", DBG_NO_ASM, "Don't print disassembled shaders"},
        { "preoptir", DBG_PREOPT_IR, "Print the LLVM IR before initial optimizations" },
        { "checkir", DBG_CHECK_IR, "Enable additional sanity checks on shader IR" },
        { "nooptvariant", DBG_NO_OPT_VARIANT, "Disable compiling optimized shader variants." },

        { "testdma", DBG_TEST_DMA, "Invoke SDMA tests and exit." },
        { "testvmfaultcp", DBG_TEST_VMFAULT_CP, "Invoke a CP VM fault test and exit." },
        { "testvmfaultsdma", DBG_TEST_VMFAULT_SDMA, "Invoke a SDMA VM fault test and exit." },
        { "testvmfaultshader", DBG_TEST_VMFAULT_SHADER, "Invoke a shader VM fault test and exit." },

        /* features */
        { "nodma", DBG_NO_ASYNC_DMA, "Disable asynchronous DMA" },
        { "nohyperz", DBG_NO_HYPERZ, "Disable Hyper-Z" },
        /* GL uses the word INVALIDATE, gallium uses the word DISCARD */
        { "noinvalrange", DBG_NO_DISCARD_RANGE, "Disable handling of INVALIDATE_RANGE map flags" },
        { "no2d", DBG_NO_2D_TILING, "Disable 2D tiling" },
        { "notiling", DBG_NO_TILING, "Disable tiling" },
        { "switch_on_eop", DBG_SWITCH_ON_EOP, "Program WD/IA to switch on end-of-packet." },
        { "forcedma", DBG_FORCE_DMA, "Use asynchronous DMA for all operations when possible." },
        { "precompile", DBG_PRECOMPILE, "Compile one shader variant at shader creation." },
        { "nowc", DBG_NO_WC, "Disable GTT write combining" },
        { "check_vm", DBG_CHECK_VM, "Check VM faults and dump debug info." },
        { "unsafemath", DBG_UNSAFE_MATH, "Enable unsafe math shader optimizations" },

        DEBUG_NAMED_VALUE_END /* must be last */
};

static const char* r600_get_vendor(struct pipe_screen* pscreen)
{
        return "X.Org";
}

static const char* r600_get_device_vendor(struct pipe_screen* pscreen)
{
        return "AMD";
}

static const char *r600_get_family_name(const struct r600_common_screen *rscreen)
{
        switch (rscreen->info.family) {
        case CHIP_R600: return "AMD R600";
        case CHIP_RV610: return "AMD RV610";
        case CHIP_RV630: return "AMD RV630";
        case CHIP_RV670: return "AMD RV670";
        case CHIP_RV620: return "AMD RV620";
        case CHIP_RV635: return "AMD RV635";
        case CHIP_RS780: return "AMD RS780";
        case CHIP_RS880: return "AMD RS880";
        case CHIP_RV770: return "AMD RV770";
        case CHIP_RV730: return "AMD RV730";
        case CHIP_RV710: return "AMD RV710";
        case CHIP_RV740: return "AMD RV740";
        case CHIP_CEDAR: return "AMD CEDAR";
        case CHIP_REDWOOD: return "AMD REDWOOD";
        case CHIP_JUNIPER: return "AMD JUNIPER";
        case CHIP_CYPRESS: return "AMD CYPRESS";
        case CHIP_HEMLOCK: return "AMD HEMLOCK";
        case CHIP_PALM: return "AMD PALM";
        case CHIP_SUMO: return "AMD SUMO";
        case CHIP_SUMO2: return "AMD SUMO2";
        case CHIP_BARTS: return "AMD BARTS";
        case CHIP_TURKS: return "AMD TURKS";
        case CHIP_CAICOS: return "AMD CAICOS";
        case CHIP_CAYMAN: return "AMD CAYMAN";
        case CHIP_ARUBA: return "AMD ARUBA";
        default: return "AMD unknown";
        }
}

static void r600_disk_cache_create(struct r600_common_screen *rscreen)
{
        /* Don't use the cache if shader dumping is enabled. */
        if (rscreen->debug_flags & DBG_ALL_SHADERS)
                return;

        struct mesa_sha1 ctx;
        unsigned char sha1[20];
        char cache_id[20 * 2 + 1];

        _mesa_sha1_init(&ctx);
        if (!disk_cache_get_function_identifier(r600_disk_cache_create,
                                                &ctx))
                return;

        _mesa_sha1_final(&ctx, sha1);
        disk_cache_format_hex_id(cache_id, sha1, 20 * 2);

        /* These flags affect shader compilation. */
        uint64_t shader_debug_flags =
                rscreen->debug_flags &
                (DBG_FS_CORRECT_DERIVS_AFTER_KILL |
                 DBG_UNSAFE_MATH);

        rscreen->disk_shader_cache =
                disk_cache_create(r600_get_family_name(rscreen),
                                  cache_id,
                                  shader_debug_flags);
}

static struct disk_cache *r600_get_disk_shader_cache(struct pipe_screen *pscreen)
{
        struct r600_common_screen *rscreen = (struct r600_common_screen*)pscreen;
        return rscreen->disk_shader_cache;
}

static const char* r600_get_name(struct pipe_screen* pscreen)
{
        struct r600_common_screen *rscreen = (struct r600_common_screen*)pscreen;

        return rscreen->renderer_string;
}

static float r600_get_paramf(struct pipe_screen* pscreen,
                             enum pipe_capf param)
{
        switch (param) {
        case PIPE_CAPF_MAX_LINE_WIDTH:
        case PIPE_CAPF_MAX_LINE_WIDTH_AA:
        case PIPE_CAPF_MAX_POINT_WIDTH:
        case PIPE_CAPF_MAX_POINT_WIDTH_AA:
         return 8191.0f;
        case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
                return 16.0f;
        case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
                return 16.0f;
    case PIPE_CAPF_MIN_CONSERVATIVE_RASTER_DILATE:
    case PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE:
    case PIPE_CAPF_CONSERVATIVE_RASTER_DILATE_GRANULARITY:
        return 0.0f;
        }
        return 0.0f;
}

static int r600_get_video_param(struct pipe_screen *screen,
                                enum pipe_video_profile profile,
                                enum pipe_video_entrypoint entrypoint,
                                enum pipe_video_cap param)
{
        switch (param) {
        case PIPE_VIDEO_CAP_SUPPORTED:
                return vl_profile_supported(screen, profile, entrypoint);
        case PIPE_VIDEO_CAP_NPOT_TEXTURES:
                return 1;
        case PIPE_VIDEO_CAP_MAX_WIDTH:
        case PIPE_VIDEO_CAP_MAX_HEIGHT:
                return vl_video_buffer_max_size(screen);
        case PIPE_VIDEO_CAP_PREFERED_FORMAT:
                return PIPE_FORMAT_NV12;
        case PIPE_VIDEO_CAP_PREFERS_INTERLACED:
                return false;
        case PIPE_VIDEO_CAP_SUPPORTS_INTERLACED:
                return false;
        case PIPE_VIDEO_CAP_SUPPORTS_PROGRESSIVE:
                return true;
        case PIPE_VIDEO_CAP_MAX_LEVEL:
                return vl_level_supported(screen, profile);
        default:
                return 0;
        }
}

const char *r600_get_llvm_processor_name(enum radeon_family family)
{
        switch (family) {
        case CHIP_R600:
        case CHIP_RV630:
        case CHIP_RV635:
        case CHIP_RV670:
                return "r600";
        case CHIP_RV610:
        case CHIP_RV620:
        case CHIP_RS780:
        case CHIP_RS880:
                return "rs880";
        case CHIP_RV710:
                return "rv710";
        case CHIP_RV730:
                return "rv730";
        case CHIP_RV740:
        case CHIP_RV770:
                return "rv770";
        case CHIP_PALM:
        case CHIP_CEDAR:
                return "cedar";
        case CHIP_SUMO:
        case CHIP_SUMO2:
                return "sumo";
        case CHIP_REDWOOD:
                return "redwood";
        case CHIP_JUNIPER:
                return "juniper";
        case CHIP_HEMLOCK:
        case CHIP_CYPRESS:
                return "cypress";
        case CHIP_BARTS:
                return "barts";
        case CHIP_TURKS:
                return "turks";
        case CHIP_CAICOS:
                return "caicos";
        case CHIP_CAYMAN:
        case CHIP_ARUBA:
                return "cayman";

        default:
                return "";
        }
}

static unsigned get_max_threads_per_block(struct r600_common_screen *screen,
                                          enum pipe_shader_ir ir_type)
{
        if (ir_type != PIPE_SHADER_IR_TGSI &&
            ir_type != PIPE_SHADER_IR_NIR)
                return 256;
        if (screen->chip_class >= EVERGREEN)
                return 1024;
        return 256;
}

static int r600_get_compute_param(struct pipe_screen *screen,
        enum pipe_shader_ir ir_type,
        enum pipe_compute_cap param,
        void *ret)
{
        struct r600_common_screen *rscreen = (struct r600_common_screen *)screen;

        //TODO: select these params by asic
        switch (param) {
        case PIPE_COMPUTE_CAP_IR_TARGET: {
                const char *gpu;
                const char *triple = "r600--";
                gpu = r600_get_llvm_processor_name(rscreen->family);
                if (ret) {
                        sprintf(ret, "%s-%s", gpu, triple);
                }
                /* +2 for dash and terminating NIL byte */
                return (strlen(triple) + strlen(gpu) + 2) * sizeof(char);
        }
        case PIPE_COMPUTE_CAP_GRID_DIMENSION:
                if (ret) {
                        uint64_t *grid_dimension = ret;
                        grid_dimension[0] = 3;
                }
                return 1 * sizeof(uint64_t);

        case PIPE_COMPUTE_CAP_MAX_GRID_SIZE:
                if (ret) {
                        uint64_t *grid_size = ret;
                        grid_size[0] = 65535;
                        grid_size[1] = 65535;
                        grid_size[2] = 65535;
                }
                return 3 * sizeof(uint64_t) ;

        case PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE:
                if (ret) {
                        uint64_t *block_size = ret;
                        unsigned threads_per_block = get_max_threads_per_block(rscreen, ir_type);
                        block_size[0] = threads_per_block;
                        block_size[1] = threads_per_block;
                        block_size[2] = threads_per_block;
                }
                return 3 * sizeof(uint64_t);

        case PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK:
                if (ret) {
                        uint64_t *max_threads_per_block = ret;
                        *max_threads_per_block = get_max_threads_per_block(rscreen, ir_type);
                }
                return sizeof(uint64_t);
        case PIPE_COMPUTE_CAP_ADDRESS_BITS:
                if (ret) {
                        uint32_t *address_bits = ret;
                        address_bits[0] = 32;
                }
                return 1 * sizeof(uint32_t);

        case PIPE_COMPUTE_CAP_MAX_GLOBAL_SIZE:
                if (ret) {
                        uint64_t *max_global_size = ret;
                        uint64_t max_mem_alloc_size;

                        r600_get_compute_param(screen, ir_type,
                                PIPE_COMPUTE_CAP_MAX_MEM_ALLOC_SIZE,
                                &max_mem_alloc_size);

                        /* In OpenCL, the MAX_MEM_ALLOC_SIZE must be at least
                         * 1/4 of the MAX_GLOBAL_SIZE.  Since the
                         * MAX_MEM_ALLOC_SIZE is fixed for older kernels,
                         * make sure we never report more than
                         * 4 * MAX_MEM_ALLOC_SIZE.
                         */
                        *max_global_size = MIN2(4 * max_mem_alloc_size,
                                                MAX2(rscreen->info.gart_size,
                                                     rscreen->info.vram_size));
                }
                return sizeof(uint64_t);

        case PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE:
                if (ret) {
                        uint64_t *max_local_size = ret;
                        /* Value reported by the closed source driver. */
                        *max_local_size = 32768;
                }
                return sizeof(uint64_t);

        case PIPE_COMPUTE_CAP_MAX_INPUT_SIZE:
                if (ret) {
                        uint64_t *max_input_size = ret;
                        /* Value reported by the closed source driver. */
                        *max_input_size = 1024;
                }
                return sizeof(uint64_t);

        case PIPE_COMPUTE_CAP_MAX_MEM_ALLOC_SIZE:
                if (ret) {
                        uint64_t *max_mem_alloc_size = ret;

                        *max_mem_alloc_size = rscreen->info.max_alloc_size;
                }
                return sizeof(uint64_t);

        case PIPE_COMPUTE_CAP_MAX_CLOCK_FREQUENCY:
                if (ret) {
                        uint32_t *max_clock_frequency = ret;
                        *max_clock_frequency = rscreen->info.max_shader_clock;
                }
                return sizeof(uint32_t);

        case PIPE_COMPUTE_CAP_MAX_COMPUTE_UNITS:
                if (ret) {
                        uint32_t *max_compute_units = ret;
                        *max_compute_units = rscreen->info.num_good_compute_units;
                }
                return sizeof(uint32_t);

        case PIPE_COMPUTE_CAP_IMAGES_SUPPORTED:
                if (ret) {
                        uint32_t *images_supported = ret;
                        *images_supported = 0;
                }
                return sizeof(uint32_t);
        case PIPE_COMPUTE_CAP_MAX_PRIVATE_SIZE:
                break; /* unused */
        case PIPE_COMPUTE_CAP_SUBGROUP_SIZE:
                if (ret) {
                        uint32_t *subgroup_size = ret;
                        *subgroup_size = r600_wavefront_size(rscreen->family);
                }
                return sizeof(uint32_t);
        case PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK:
                if (ret) {
                        uint64_t *max_variable_threads_per_block = ret;
                        *max_variable_threads_per_block = 0;
                }
                return sizeof(uint64_t);
        }

        fprintf(stderr, "unknown PIPE_COMPUTE_CAP %d\n", param);
        return 0;
}

static uint64_t r600_get_timestamp(struct pipe_screen *screen)
{
        struct r600_common_screen *rscreen = (struct r600_common_screen*)screen;

        return 1000000 * rscreen->ws->query_value(rscreen->ws, RADEON_TIMESTAMP) /
                        rscreen->info.clock_crystal_freq;
}

static void r600_fence_reference(struct pipe_screen *screen,
                                 struct pipe_fence_handle **dst,
                                 struct pipe_fence_handle *src)
{
        struct radeon_winsys *ws = ((struct r600_common_screen*)screen)->ws;
        struct r600_multi_fence **rdst = (struct r600_multi_fence **)dst;
        struct r600_multi_fence *rsrc = (struct r600_multi_fence *)src;

        if (pipe_reference(&(*rdst)->reference, &rsrc->reference)) {
                ws->fence_reference(&(*rdst)->gfx, NULL);
                ws->fence_reference(&(*rdst)->sdma, NULL);
                FREE(*rdst);
        }
        *rdst = rsrc;
}

static bool r600_fence_finish(struct pipe_screen *screen,
                              struct pipe_context *ctx,
                              struct pipe_fence_handle *fence,
                              uint64_t timeout)
{
        struct radeon_winsys *rws = ((struct r600_common_screen*)screen)->ws;
        struct r600_multi_fence *rfence = (struct r600_multi_fence *)fence;
        struct r600_common_context *rctx;
        int64_t abs_timeout = os_time_get_absolute_timeout(timeout);

        ctx = threaded_context_unwrap_sync(ctx);
        rctx = ctx ? (struct r600_common_context*)ctx : NULL;

        if (rfence->sdma) {
                if (!rws->fence_wait(rws, rfence->sdma, timeout))
                        return false;

                /* Recompute the timeout after waiting. */
                if (timeout && timeout != PIPE_TIMEOUT_INFINITE) {
                        int64_t time = os_time_get_nano();
                        timeout = abs_timeout > time ? abs_timeout - time : 0;
                }
        }

        if (!rfence->gfx)
                return true;

        /* Flush the gfx IB if it hasn't been flushed yet. */
        if (rctx &&
            rfence->gfx_unflushed.ctx == rctx &&
            rfence->gfx_unflushed.ib_index == rctx->num_gfx_cs_flushes) {
                rctx->gfx.flush(rctx, timeout ? 0 : PIPE_FLUSH_ASYNC, NULL);
                rfence->gfx_unflushed.ctx = NULL;

                if (!timeout)
                        return false;

                /* Recompute the timeout after all that. */
                if (timeout && timeout != PIPE_TIMEOUT_INFINITE) {
                        int64_t time = os_time_get_nano();
                        timeout = abs_timeout > time ? abs_timeout - time : 0;
                }
        }

        return rws->fence_wait(rws, rfence->gfx, timeout);
}

static void r600_query_memory_info(struct pipe_screen *screen,
                                   struct pipe_memory_info *info)
{
        struct r600_common_screen *rscreen = (struct r600_common_screen*)screen;
        struct radeon_winsys *ws = rscreen->ws;
        unsigned vram_usage, gtt_usage;

        info->total_device_memory = rscreen->info.vram_size / 1024;
        info->total_staging_memory = rscreen->info.gart_size / 1024;

        /* The real TTM memory usage is somewhat random, because:
         *
         * 1) TTM delays freeing memory, because it can only free it after
         *    fences expire.
         *
         * 2) The memory usage can be really low if big VRAM evictions are
         *    taking place, but the real usage is well above the size of VRAM.
         *
         * Instead, return statistics of this process.
         */
        vram_usage = ws->query_value(ws, RADEON_REQUESTED_VRAM_MEMORY) / 1024;
        gtt_usage =  ws->query_value(ws, RADEON_REQUESTED_GTT_MEMORY) / 1024;

        info->avail_device_memory =
                vram_usage <= info->total_device_memory ?
                                info->total_device_memory - vram_usage : 0;
        info->avail_staging_memory =
                gtt_usage <= info->total_staging_memory ?
                                info->total_staging_memory - gtt_usage : 0;

        info->device_memory_evicted =
                ws->query_value(ws, RADEON_NUM_BYTES_MOVED) / 1024;

        /* Just return the number of evicted 64KB pages. */
        info->nr_device_memory_evictions = info->device_memory_evicted / 64;
}

struct pipe_resource *r600_resource_create_common(struct pipe_screen *screen,
                                                  const struct pipe_resource *templ)
{
        if (templ->target == PIPE_BUFFER) {
                return r600_buffer_create(screen, templ, 256);
        } else {
                return r600_texture_create(screen, templ);
        }
}

const struct nir_shader_compiler_options r600_nir_fs_options = {
        .fuse_ffma = true,
        .lower_scmp = true,
        .lower_flrp32 = true,
        .lower_flrp64 = true,
        .lower_fpow = true,
        .lower_fdiv = true,
        .lower_idiv = true,
        .lower_fmod = true,
        .lower_doubles_options = nir_lower_fp64_full_software,
        .lower_int64_options = 0,
        .lower_extract_byte = true,
        .lower_extract_word = true,
        .max_unroll_iterations = 32,
        .lower_all_io_to_temps = true,
        .vectorize_io = true,
        .has_umad24 = true,
        .has_umul24 = true,
};

const struct nir_shader_compiler_options r600_nir_options = {
        .fuse_ffma = true,
        .lower_scmp = true,
        .lower_flrp32 = true,
        .lower_flrp64 = true,
        .lower_fpow = true,
        .lower_fdiv = true,
        .lower_idiv = true,
        .lower_fmod = true,
        .lower_doubles_options = nir_lower_fp64_full_software,
        .lower_int64_options = 0,
        .lower_extract_byte = true,
        .lower_extract_word = true,
        .max_unroll_iterations = 32,
        .vectorize_io = true,
        .has_umad24 = true,
        .has_umul24 = true,
};


static const void *
r600_get_compiler_options(struct pipe_screen *screen,
                          enum pipe_shader_ir ir,
                          enum pipe_shader_type shader)
{
        assert(ir == PIPE_SHADER_IR_NIR);
        if (shader == PIPE_SHADER_FRAGMENT)
           return &r600_nir_fs_options;
        else
           return &r600_nir_options;
}

bool r600_common_screen_init(struct r600_common_screen *rscreen,
                             struct radeon_winsys *ws)
{
        char family_name[32] = {}, kernel_version[128] = {};
        struct utsname uname_data;
        const char *chip_name;

        ws->query_info(ws, &rscreen->info);
        rscreen->ws = ws;

        chip_name = r600_get_family_name(rscreen);

        if (uname(&uname_data) == 0)
                snprintf(kernel_version, sizeof(kernel_version),
                         " / %s", uname_data.release);

        snprintf(rscreen->renderer_string, sizeof(rscreen->renderer_string),
                 "%s (%sDRM %i.%i.%i%s"
#ifdef LLVM_AVAILABLE
                 ", LLVM " MESA_LLVM_VERSION_STRING
#endif
                 ")",
                 chip_name, family_name, rscreen->info.drm_major,
                 rscreen->info.drm_minor, rscreen->info.drm_patchlevel,
                 kernel_version);

        rscreen->b.get_name = r600_get_name;
        rscreen->b.get_vendor = r600_get_vendor;
        rscreen->b.get_device_vendor = r600_get_device_vendor;
        rscreen->b.get_disk_shader_cache = r600_get_disk_shader_cache;
        rscreen->b.get_compute_param = r600_get_compute_param;
        rscreen->b.get_paramf = r600_get_paramf;
        rscreen->b.get_timestamp = r600_get_timestamp;
        rscreen->b.get_compiler_options = r600_get_compiler_options;
        rscreen->b.fence_finish = r600_fence_finish;
        rscreen->b.fence_reference = r600_fence_reference;
        rscreen->b.resource_destroy = u_resource_destroy_vtbl;
        rscreen->b.resource_from_user_memory = r600_buffer_from_user_memory;
        rscreen->b.query_memory_info = r600_query_memory_info;

        if (rscreen->info.has_hw_decode) {
                rscreen->b.get_video_param = rvid_get_video_param;
                rscreen->b.is_video_format_supported = rvid_is_format_supported;
        } else {
                rscreen->b.get_video_param = r600_get_video_param;
                rscreen->b.is_video_format_supported = vl_video_buffer_is_format_supported;
        }

        r600_init_screen_texture_functions(rscreen);
        r600_init_screen_query_functions(rscreen);

        rscreen->family = rscreen->info.family;
        rscreen->chip_class = rscreen->info.chip_class;
        rscreen->debug_flags |= debug_get_flags_option("R600_DEBUG", common_debug_options, 0);
        int has_draw_use_llvm = debug_get_bool_option("DRAW_USE_LLVM", FALSE);
        if (!has_draw_use_llvm)
           setenv("DRAW_USE_LLVM", "no", 0);


        r600_disk_cache_create(rscreen);

        slab_create_parent(&rscreen->pool_transfers, sizeof(struct r600_transfer), 64);

        rscreen->force_aniso = MIN2(16, debug_get_num_option("R600_TEX_ANISO", -1));
        if (rscreen->force_aniso >= 0) {
                printf("radeon: Forcing anisotropy filter to %ix\n",
                       /* round down to a power of two */
                       1 << util_logbase2(rscreen->force_aniso));
        }

        (void) mtx_init(&rscreen->aux_context_lock, mtx_plain);
        (void) mtx_init(&rscreen->gpu_load_mutex, mtx_plain);

        if (rscreen->debug_flags & DBG_INFO) {
                printf("pci (domain:bus:dev.func): %04x:%02x:%02x.%x\n",
                       rscreen->info.pci_domain, rscreen->info.pci_bus,
                       rscreen->info.pci_dev, rscreen->info.pci_func);
                printf("pci_id = 0x%x\n", rscreen->info.pci_id);
                printf("family = %i (%s)\n", rscreen->info.family,
                       r600_get_family_name(rscreen));
                printf("chip_class = %i\n", rscreen->info.chip_class);
                printf("pte_fragment_size = %u\n", rscreen->info.pte_fragment_size);
                printf("gart_page_size = %u\n", rscreen->info.gart_page_size);
                printf("gart_size = %i MB\n", (int)DIV_ROUND_UP(rscreen->info.gart_size, 1024*1024));
                printf("vram_size = %i MB\n", (int)DIV_ROUND_UP(rscreen->info.vram_size, 1024*1024));
                printf("vram_vis_size = %i MB\n", (int)DIV_ROUND_UP(rscreen->info.vram_vis_size, 1024*1024));
                printf("max_alloc_size = %i MB\n",
                       (int)DIV_ROUND_UP(rscreen->info.max_alloc_size, 1024*1024));
                printf("min_alloc_size = %u\n", rscreen->info.min_alloc_size);
                printf("has_dedicated_vram = %u\n", rscreen->info.has_dedicated_vram);
                printf("r600_has_virtual_memory = %i\n", rscreen->info.r600_has_virtual_memory);
                printf("gfx_ib_pad_with_type2 = %i\n", rscreen->info.gfx_ib_pad_with_type2);
                printf("has_hw_decode = %u\n", rscreen->info.has_hw_decode);
                printf("num_rings[RING_DMA] = %i\n", rscreen->info.num_rings[RING_DMA]);
                printf("num_rings[RING_COMPUTE] = %u\n", rscreen->info.num_rings[RING_COMPUTE]);
                printf("uvd_fw_version = %u\n", rscreen->info.uvd_fw_version);
                printf("vce_fw_version = %u\n", rscreen->info.vce_fw_version);
                printf("me_fw_version = %i\n", rscreen->info.me_fw_version);
                printf("pfp_fw_version = %i\n", rscreen->info.pfp_fw_version);
                printf("ce_fw_version = %i\n", rscreen->info.ce_fw_version);
                printf("vce_harvest_config = %i\n", rscreen->info.vce_harvest_config);
                printf("clock_crystal_freq = %i\n", rscreen->info.clock_crystal_freq);
                printf("tcc_cache_line_size = %u\n", rscreen->info.tcc_cache_line_size);
                printf("drm = %i.%i.%i\n", rscreen->info.drm_major,
                       rscreen->info.drm_minor, rscreen->info.drm_patchlevel);
                printf("has_userptr = %i\n", rscreen->info.has_userptr);
                printf("has_syncobj = %u\n", rscreen->info.has_syncobj);

                printf("r600_max_quad_pipes = %i\n", rscreen->info.r600_max_quad_pipes);
                printf("max_shader_clock = %i\n", rscreen->info.max_shader_clock);
                printf("num_good_compute_units = %i\n", rscreen->info.num_good_compute_units);
                printf("max_se = %i\n", rscreen->info.max_se);
                printf("max_sh_per_se = %i\n", rscreen->info.max_sh_per_se);

                printf("r600_gb_backend_map = %i\n", rscreen->info.r600_gb_backend_map);
                printf("r600_gb_backend_map_valid = %i\n", rscreen->info.r600_gb_backend_map_valid);
                printf("r600_num_banks = %i\n", rscreen->info.r600_num_banks);
                printf("num_render_backends = %i\n", rscreen->info.num_render_backends);
                printf("num_tile_pipes = %i\n", rscreen->info.num_tile_pipes);
                printf("pipe_interleave_bytes = %i\n", rscreen->info.pipe_interleave_bytes);
                printf("enabled_rb_mask = 0x%x\n", rscreen->info.enabled_rb_mask);
                printf("max_alignment = %u\n", (unsigned)rscreen->info.max_alignment);
        }
        return true;
}

void r600_destroy_common_screen(struct r600_common_screen *rscreen)
{
        r600_perfcounters_destroy(rscreen);
        r600_gpu_load_kill_thread(rscreen);

        mtx_destroy(&rscreen->gpu_load_mutex);
        mtx_destroy(&rscreen->aux_context_lock);
        rscreen->aux_context->destroy(rscreen->aux_context);

        slab_destroy_parent(&rscreen->pool_transfers);

        disk_cache_destroy(rscreen->disk_shader_cache);
        rscreen->ws->destroy(rscreen->ws);
        FREE(rscreen);
}

bool r600_can_dump_shader(struct r600_common_screen *rscreen,
                          unsigned processor)
{
        return rscreen->debug_flags & (1 << processor);
}

bool r600_extra_shader_checks(struct r600_common_screen *rscreen, unsigned processor)
{
        return (rscreen->debug_flags & DBG_CHECK_IR) ||
               r600_can_dump_shader(rscreen, processor);
}

void r600_screen_clear_buffer(struct r600_common_screen *rscreen, struct pipe_resource *dst,
                              uint64_t offset, uint64_t size, unsigned value)
{
        struct r600_common_context *rctx = (struct r600_common_context*)rscreen->aux_context;

        mtx_lock(&rscreen->aux_context_lock);
        rctx->dma_clear_buffer(&rctx->b, dst, offset, size, value);
        rscreen->aux_context->flush(rscreen->aux_context, NULL, 0);
        mtx_unlock(&rscreen->aux_context_lock);
}