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mesa/src/gallium/drivers/etnaviv/etnaviv_context.c

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/*
* Copyright (c) 2012-2015 Etnaviv Project
*
* 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, sub license,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE 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:
* Wladimir J. van der Laan <laanwj@gmail.com>
* Christian Gmeiner <christian.gmeiner@gmail.com>
*/
#include "etnaviv_context.h"
#include "etnaviv_blend.h"
#include "etnaviv_clear_blit.h"
#include "etnaviv_compiler.h"
#include "etnaviv_debug.h"
#include "etnaviv_emit.h"
#include "etnaviv_fence.h"
#include "etnaviv_query.h"
#include "etnaviv_query_acc.h"
#include "etnaviv_rasterizer.h"
#include "etnaviv_resource.h"
#include "etnaviv_screen.h"
#include "etnaviv_shader.h"
#include "etnaviv_state.h"
#include "etnaviv_surface.h"
#include "etnaviv_texture.h"
#include "etnaviv_transfer.h"
#include "etnaviv_translate.h"
#include "etnaviv_zsa.h"
#include "pipe/p_context.h"
#include "pipe/p_state.h"
#include "util/hash_table.h"
#include "util/u_blitter.h"
#include "util/u_helpers.h"
#include "util/u_memory.h"
#include "util/u_prim.h"
#include "util/u_upload_mgr.h"
#include "hw/common.xml.h"
static inline void
etna_emit_nop_with_data(struct etna_cmd_stream *stream, uint32_t value)
{
etna_cmd_stream_emit(stream, VIV_FE_NOP_HEADER_OP_NOP);
etna_cmd_stream_emit(stream, value);
}
static void
etna_emit_string_marker(struct pipe_context *pctx, const char *string, int len)
{
struct etna_context *ctx = etna_context(pctx);
struct etna_cmd_stream *stream = ctx->stream;
const uint32_t *buf = (const void *)string;
etna_cmd_stream_reserve(stream, len * 2);
while (len >= 4) {
etna_emit_nop_with_data(stream, *buf);
buf++;
len -= 4;
}
/* copy remainder bytes without reading past end of input string */
if (len > 0) {
uint32_t w = 0;
memcpy(&w, buf, len);
etna_emit_nop_with_data(stream, w);
}
}
static void
etna_context_destroy(struct pipe_context *pctx)
{
struct etna_context *ctx = etna_context(pctx);
mtx_lock(&ctx->lock);
if (ctx->used_resources_read) {
/*
* There should be no resources tracked in the context when it's being
* destroyed. Be sure there are none to avoid memory leaks on buggy
* programs.
*/
set_foreach(ctx->used_resources_read, entry) {
struct etna_resource *rsc = (struct etna_resource *)entry->key;
_mesa_set_remove_key(rsc->pending_ctx, ctx);
}
_mesa_set_destroy(ctx->used_resources_read, NULL);
}
if (ctx->used_resources_write) {
/*
* There should be no resources tracked in the context when it's being
* destroyed. Be sure there are none to avoid memory leaks on buggy
* programs.
*/
set_foreach(ctx->used_resources_write, entry) {
struct etna_resource *rsc = (struct etna_resource *)entry->key;
_mesa_set_remove_key(rsc->pending_ctx, ctx);
}
_mesa_set_destroy(ctx->used_resources_write, NULL);
}
mtx_unlock(&ctx->lock);
if (ctx->dummy_rt)
etna_bo_del(ctx->dummy_rt);
util_copy_framebuffer_state(&ctx->framebuffer_s, NULL);
if (ctx->primconvert)
util_primconvert_destroy(ctx->primconvert);
if (ctx->blitter)
util_blitter_destroy(ctx->blitter);
if (pctx->stream_uploader)
u_upload_destroy(pctx->stream_uploader);
if (ctx->stream)
etna_cmd_stream_del(ctx->stream);
slab_destroy_child(&ctx->transfer_pool);
if (ctx->in_fence_fd != -1)
close(ctx->in_fence_fd);
mtx_destroy(&ctx->lock);
FREE(pctx);
}
/* Update render state where needed based on draw operation */
static void
etna_update_state_for_draw(struct etna_context *ctx, const struct pipe_draw_info *info)
{
/* Handle primitive restart:
* - If not an indexed draw, we don't care about the state of the primitive restart bit.
* - Otherwise, set the bit in INDEX_STREAM_CONTROL in the index buffer state
* accordingly
* - If the value of the INDEX_STREAM_CONTROL register changed due to this, or
* primitive restart is enabled and the restart index changed, mark the index
* buffer state as dirty
*/
if (info->index_size) {
uint32_t new_control = ctx->index_buffer.FE_INDEX_STREAM_CONTROL;
if (info->primitive_restart)
new_control |= VIVS_FE_INDEX_STREAM_CONTROL_PRIMITIVE_RESTART;
else
new_control &= ~VIVS_FE_INDEX_STREAM_CONTROL_PRIMITIVE_RESTART;
if (ctx->index_buffer.FE_INDEX_STREAM_CONTROL != new_control ||
(info->primitive_restart && ctx->index_buffer.FE_PRIMITIVE_RESTART_INDEX != info->restart_index)) {
ctx->index_buffer.FE_INDEX_STREAM_CONTROL = new_control;
ctx->index_buffer.FE_PRIMITIVE_RESTART_INDEX = info->restart_index;
ctx->dirty |= ETNA_DIRTY_INDEX_BUFFER;
}
}
}
static bool
etna_get_vs(struct etna_context *ctx, struct etna_shader_key key)
{
const struct etna_shader_variant *old = ctx->shader.vs;
ctx->shader.vs = etna_shader_variant(ctx->shader.bind_vs, key, &ctx->debug);
if (!ctx->shader.vs)
return false;
if (old != ctx->shader.vs)
ctx->dirty |= ETNA_DIRTY_SHADER;
return true;
}
static bool
etna_get_fs(struct etna_context *ctx, struct etna_shader_key key)
{
const struct etna_shader_variant *old = ctx->shader.fs;
ctx->shader.fs = etna_shader_variant(ctx->shader.bind_fs, key, &ctx->debug);
if (!ctx->shader.fs)
return false;
if (old != ctx->shader.fs)
ctx->dirty |= ETNA_DIRTY_SHADER;
return true;
}
static void
etna_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info)
{
struct etna_context *ctx = etna_context(pctx);
struct etna_screen *screen = ctx->screen;
struct pipe_framebuffer_state *pfb = &ctx->framebuffer_s;
uint32_t draw_mode;
unsigned i;
if (!info->count_from_stream_output && !info->indirect &&
!info->primitive_restart &&
!u_trim_pipe_prim(info->mode, (unsigned*)&info->count))
return;
if (ctx->vertex_elements == NULL || ctx->vertex_elements->num_elements == 0)
return; /* Nothing to do */
if (!(ctx->prim_hwsupport & (1 << info->mode))) {
struct primconvert_context *primconvert = ctx->primconvert;
util_primconvert_save_rasterizer_state(primconvert, ctx->rasterizer);
util_primconvert_draw_vbo(primconvert, info);
return;
}
int prims = u_decomposed_prims_for_vertices(info->mode, info->count);
if (unlikely(prims <= 0)) {
DBG("Invalid draw primitive mode=%i or no primitives to be drawn", info->mode);
return;
}
draw_mode = translate_draw_mode(info->mode);
if (draw_mode == ETNA_NO_MATCH) {
BUG("Unsupported draw mode");
return;
}
/* Upload a user index buffer. */
unsigned index_offset = 0;
struct pipe_resource *indexbuf = NULL;
if (info->index_size) {
indexbuf = info->has_user_indices ? NULL : info->index.resource;
if (info->has_user_indices &&
!util_upload_index_buffer(pctx, info, &indexbuf, &index_offset, 4)) {
BUG("Index buffer upload failed.");
return;
}
/* Add start to index offset, when rendering indexed */
index_offset += info->start * info->index_size;
ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.bo = etna_resource(indexbuf)->bo;
ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.offset = index_offset;
ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.flags = ETNA_RELOC_READ;
ctx->index_buffer.FE_INDEX_STREAM_CONTROL = translate_index_size(info->index_size);
if (!ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.bo) {
BUG("Unsupported or no index buffer");
return;
}
} else {
ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.bo = 0;
ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.offset = 0;
ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.flags = 0;
ctx->index_buffer.FE_INDEX_STREAM_CONTROL = 0;
}
ctx->dirty |= ETNA_DIRTY_INDEX_BUFFER;
struct etna_shader_key key = {
.front_ccw = ctx->rasterizer->front_ccw,
};
if (pfb->cbufs[0])
key.frag_rb_swap = !!translate_pe_format_rb_swap(pfb->cbufs[0]->format);
if (!etna_get_vs(ctx, key) || !etna_get_fs(ctx, key)) {
BUG("compiled shaders are not okay");
return;
}
/* Update any derived state */
if (!etna_state_update(ctx))
return;
mtx_lock(&ctx->lock);
/*
* Figure out the buffers/features we need:
*/
if (etna_depth_enabled(ctx))
resource_written(ctx, pfb->zsbuf->texture);
if (etna_stencil_enabled(ctx))
resource_written(ctx, pfb->zsbuf->texture);
for (i = 0; i < pfb->nr_cbufs; i++) {
struct pipe_resource *surf;
if (!pfb->cbufs[i])
continue;
surf = pfb->cbufs[i]->texture;
resource_written(ctx, surf);
}
/* Mark constant buffers as being read */
foreach_bit(i, ctx->constant_buffer[PIPE_SHADER_VERTEX].enabled_mask)
resource_read(ctx, ctx->constant_buffer[PIPE_SHADER_VERTEX].cb[i].buffer);
foreach_bit(i, ctx->constant_buffer[PIPE_SHADER_FRAGMENT].enabled_mask)
resource_read(ctx, ctx->constant_buffer[PIPE_SHADER_FRAGMENT].cb[i].buffer);
/* Mark VBOs as being read */
foreach_bit(i, ctx->vertex_buffer.enabled_mask) {
assert(!ctx->vertex_buffer.vb[i].is_user_buffer);
resource_read(ctx, ctx->vertex_buffer.vb[i].buffer.resource);
}
/* Mark index buffer as being read */
resource_read(ctx, indexbuf);
/* Mark textures as being read */
for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
if (ctx->sampler_view[i]) {
resource_read(ctx, ctx->sampler_view[i]->texture);
/* if texture was modified since the last update,
* we need to clear the texture cache and possibly
* resolve/update ts
*/
etna_update_sampler_source(ctx->sampler_view[i], i);
}
}
ctx->stats.prims_emitted += u_reduced_prims_for_vertices(info->mode, info->count);
ctx->stats.draw_calls++;
/* Update state for this draw operation */
etna_update_state_for_draw(ctx, info);
/* First, sync state, then emit DRAW_PRIMITIVES or DRAW_INDEXED_PRIMITIVES */
etna_emit_state(ctx);
if (screen->specs.halti >= 2) {
/* On HALTI2+ (GC3000 and higher) only use instanced drawing commands, as the blob does */
etna_draw_instanced(ctx->stream, info->index_size, draw_mode, info->instance_count,
info->count, info->index_size ? info->index_bias : info->start);
} else {
if (info->index_size)
etna_draw_indexed_primitives(ctx->stream, draw_mode, 0, prims, info->index_bias);
else
etna_draw_primitives(ctx->stream, draw_mode, info->start, prims);
}
if (DBG_ENABLED(ETNA_DBG_DRAW_STALL)) {
/* Stall the FE after every draw operation. This allows better
* debug of GPU hang conditions, as the FE will indicate which
* draw op has caused the hang. */
etna_stall(ctx->stream, SYNC_RECIPIENT_FE, SYNC_RECIPIENT_PE);
}
mtx_unlock(&ctx->lock);
if (DBG_ENABLED(ETNA_DBG_FLUSH_ALL))
pctx->flush(pctx, NULL, 0);
if (ctx->framebuffer_s.cbufs[0])
etna_resource(ctx->framebuffer_s.cbufs[0]->texture)->seqno++;
if (ctx->framebuffer_s.zsbuf)
etna_resource(ctx->framebuffer_s.zsbuf->texture)->seqno++;
if (info->index_size && indexbuf != info->index.resource)
pipe_resource_reference(&indexbuf, NULL);
}
static void
etna_reset_gpu_state(struct etna_context *ctx)
{
struct etna_cmd_stream *stream = ctx->stream;
struct etna_screen *screen = ctx->screen;
etna_set_state(stream, VIVS_GL_API_MODE, VIVS_GL_API_MODE_OPENGL);
etna_set_state(stream, VIVS_GL_VERTEX_ELEMENT_CONFIG, 0x00000001);
/* blob sets this to 0x40000031 on GC7000, seems to make no difference,
* but keep it in mind if depth behaves strangely. */
etna_set_state(stream, VIVS_RA_EARLY_DEPTH, 0x00000031);
etna_set_state(stream, VIVS_PA_W_CLIP_LIMIT, 0x34000001);
etna_set_state(stream, VIVS_PA_FLAGS, 0x00000000); /* blob sets ZCONVERT_BYPASS on GC3000+, this messes up z for us */
etna_set_state(stream, VIVS_PA_VIEWPORT_UNK00A80, 0x38a01404);
etna_set_state(stream, VIVS_PA_VIEWPORT_UNK00A84, fui(8192.0));
etna_set_state(stream, VIVS_PA_ZFARCLIPPING, 0x00000000);
etna_set_state(stream, VIVS_RA_HDEPTH_CONTROL, 0x00007000);
etna_set_state(stream, VIVS_PS_CONTROL_EXT, 0x00000000);
/* There is no HALTI0 specific state */
if (screen->specs.halti >= 1) { /* Only on HALTI1+ */
etna_set_state(stream, VIVS_VS_HALTI1_UNK00884, 0x00000808);
}
if (screen->specs.halti >= 2) { /* Only on HALTI2+ */
etna_set_state(stream, VIVS_RA_UNK00E0C, 0x00000000);
}
if (screen->specs.halti >= 3) { /* Only on HALTI3+ */
etna_set_state(stream, VIVS_PS_HALTI3_UNK0103C, 0x76543210);
}
if (screen->specs.halti >= 4) { /* Only on HALTI4+ */
etna_set_state(stream, VIVS_PS_MSAA_CONFIG, 0x6fffffff & 0xf70fffff & 0xfff6ffff &
0xffff6fff & 0xfffff6ff & 0xffffff7f);
etna_set_state(stream, VIVS_PE_HALTI4_UNK014C0, 0x00000000);
}
if (screen->specs.halti >= 5) { /* Only on HALTI5+ */
etna_set_state(stream, VIVS_NTE_DESCRIPTOR_UNK14C40, 0x00000001);
etna_set_state(stream, VIVS_FE_HALTI5_UNK007D8, 0x00000002);
etna_set_state(stream, VIVS_PS_SAMPLER_BASE, 0x00000000);
etna_set_state(stream, VIVS_VS_SAMPLER_BASE, 0x00000020);
etna_set_state(stream, VIVS_SH_CONFIG, VIVS_SH_CONFIG_RTNE_ROUNDING);
} else { /* Only on pre-HALTI5 */
etna_set_state(stream, VIVS_GL_UNK03838, 0x00000000);
etna_set_state(stream, VIVS_GL_UNK03854, 0x00000000);
}
if (!screen->specs.use_blt) {
/* Enable SINGLE_BUFFER for resolve, if supported */
etna_set_state(stream, VIVS_RS_SINGLE_BUFFER, COND(screen->specs.single_buffer, VIVS_RS_SINGLE_BUFFER_ENABLE));
}
if (screen->specs.halti >= 5) {
/* TXDESC cache flush - do this once at the beginning, as texture
* descriptors are only written by the CPU once, then patched by the kernel
* before command stream submission. It does not need flushing if the
* referenced image data changes.
*/
etna_set_state(stream, VIVS_NTE_DESCRIPTOR_FLUSH, 0);
etna_set_state(stream, VIVS_GL_FLUSH_CACHE,
VIVS_GL_FLUSH_CACHE_DESCRIPTOR_UNK12 |
VIVS_GL_FLUSH_CACHE_DESCRIPTOR_UNK13);
/* Icache invalidate (should do this on shader change?) */
etna_set_state(stream, VIVS_VS_ICACHE_INVALIDATE,
VIVS_VS_ICACHE_INVALIDATE_UNK0 | VIVS_VS_ICACHE_INVALIDATE_UNK1 |
VIVS_VS_ICACHE_INVALIDATE_UNK2 | VIVS_VS_ICACHE_INVALIDATE_UNK3 |
VIVS_VS_ICACHE_INVALIDATE_UNK4);
}
ctx->dirty = ~0L;
ctx->dirty_sampler_views = ~0L;
}
static void
etna_flush(struct pipe_context *pctx, struct pipe_fence_handle **fence,
enum pipe_flush_flags flags)
{
struct etna_context *ctx = etna_context(pctx);
int out_fence_fd = -1;
mtx_lock(&ctx->lock);
list_for_each_entry(struct etna_acc_query, aq, &ctx->active_acc_queries, node)
etna_acc_query_suspend(aq, ctx);
etna_cmd_stream_flush(ctx->stream, ctx->in_fence_fd,
(flags & PIPE_FLUSH_FENCE_FD) ? &out_fence_fd : NULL);
list_for_each_entry(struct etna_acc_query, aq, &ctx->active_acc_queries, node)
etna_acc_query_resume(aq, ctx);
if (fence)
*fence = etna_fence_create(pctx, out_fence_fd);
/*
* Go through all _resources_ pending in this _context_ and mark them as
* not pending in this _context_ anymore, since they were just flushed.
*/
set_foreach(ctx->used_resources_read, entry) {
struct etna_resource *rsc = (struct etna_resource *)entry->key;
struct pipe_resource *referenced = &rsc->base;
_mesa_set_remove_key(rsc->pending_ctx, ctx);
/* if resource has no pending ctx's reset its status */
if (_mesa_set_next_entry(rsc->pending_ctx, NULL) == NULL)
rsc->status &= ~ETNA_PENDING_READ;
pipe_resource_reference(&referenced, NULL);
}
_mesa_set_clear(ctx->used_resources_read, NULL);
set_foreach(ctx->used_resources_write, entry) {
struct etna_resource *rsc = (struct etna_resource *)entry->key;
struct pipe_resource *referenced = &rsc->base;
_mesa_set_remove_key(rsc->pending_ctx, ctx);
/* if resource has no pending ctx's reset its status */
if (_mesa_set_next_entry(rsc->pending_ctx, NULL) == NULL)
rsc->status &= ~ETNA_PENDING_WRITE;
pipe_resource_reference(&referenced, NULL);
}
_mesa_set_clear(ctx->used_resources_write, NULL);
etna_reset_gpu_state(ctx);
mtx_unlock(&ctx->lock);
}
static void
etna_context_force_flush(struct etna_cmd_stream *stream, void *priv)
{
struct pipe_context *pctx = priv;
pctx->flush(pctx, NULL, 0);
}
static void
etna_set_debug_callback(struct pipe_context *pctx,
const struct pipe_debug_callback *cb)
{
struct etna_context *ctx = etna_context(pctx);
if (cb)
ctx->debug = *cb;
else
memset(&ctx->debug, 0, sizeof(ctx->debug));
}
struct pipe_context *
etna_context_create(struct pipe_screen *pscreen, void *priv, unsigned flags)
{
struct etna_context *ctx = CALLOC_STRUCT(etna_context);
struct etna_screen *screen;
struct pipe_context *pctx;
if (ctx == NULL)
return NULL;
pctx = &ctx->base;
pctx->priv = ctx;
pctx->screen = pscreen;
pctx->stream_uploader = u_upload_create_default(pctx);
if (!pctx->stream_uploader)
goto fail;
pctx->const_uploader = pctx->stream_uploader;
screen = etna_screen(pscreen);
ctx->stream = etna_cmd_stream_new(screen->pipe, 0x2000,
&etna_context_force_flush, pctx);
if (ctx->stream == NULL)
goto fail;
ctx->used_resources_read = _mesa_set_create(NULL, _mesa_hash_pointer,
_mesa_key_pointer_equal);
if (!ctx->used_resources_read)
goto fail;
ctx->used_resources_write = _mesa_set_create(NULL, _mesa_hash_pointer,
_mesa_key_pointer_equal);
if (!ctx->used_resources_write)
goto fail;
mtx_init(&ctx->lock, mtx_recursive);
/* context ctxate setup */
ctx->screen = screen;
/* need some sane default in case gallium frontends don't set some state: */
ctx->sample_mask = 0xffff;
/* Set sensible defaults for state */
etna_reset_gpu_state(ctx);
ctx->in_fence_fd = -1;
pctx->destroy = etna_context_destroy;
pctx->draw_vbo = etna_draw_vbo;
pctx->flush = etna_flush;
pctx->set_debug_callback = etna_set_debug_callback;
pctx->create_fence_fd = etna_create_fence_fd;
pctx->fence_server_sync = etna_fence_server_sync;
pctx->emit_string_marker = etna_emit_string_marker;
/* creation of compile states */
pctx->create_blend_state = etna_blend_state_create;
pctx->create_rasterizer_state = etna_rasterizer_state_create;
pctx->create_depth_stencil_alpha_state = etna_zsa_state_create;
etna_clear_blit_init(pctx);
etna_query_context_init(pctx);
etna_state_init(pctx);
etna_surface_init(pctx);
etna_shader_init(pctx);
etna_texture_init(pctx);
etna_transfer_init(pctx);
ctx->blitter = util_blitter_create(pctx);
if (!ctx->blitter)
goto fail;
/* Generate the bitmask of supported draw primitives. */
ctx->prim_hwsupport = 1 << PIPE_PRIM_POINTS |
1 << PIPE_PRIM_LINES |
1 << PIPE_PRIM_LINE_STRIP |
1 << PIPE_PRIM_TRIANGLES |
1 << PIPE_PRIM_TRIANGLE_FAN;
/* TODO: The bug relates only to indexed draws, but here we signal
* that there is no support for triangle strips at all. This should
* be refined.
*/
if (VIV_FEATURE(ctx->screen, chipMinorFeatures2, BUG_FIXES8))
ctx->prim_hwsupport |= 1 << PIPE_PRIM_TRIANGLE_STRIP;
if (VIV_FEATURE(ctx->screen, chipMinorFeatures2, LINE_LOOP))
ctx->prim_hwsupport |= 1 << PIPE_PRIM_LINE_LOOP;
ctx->primconvert = util_primconvert_create(pctx, ctx->prim_hwsupport);
if (!ctx->primconvert)
goto fail;
slab_create_child(&ctx->transfer_pool, &screen->transfer_pool);
list_inithead(&ctx->active_acc_queries);
/* create dummy RT buffer, used when rendering with no color buffer */
ctx->dummy_rt = etna_bo_new(ctx->screen->dev, 64 * 64 * 4,
DRM_ETNA_GEM_CACHE_WC);
if (!ctx->dummy_rt)
goto fail;
ctx->dummy_rt_reloc.bo = ctx->dummy_rt;
ctx->dummy_rt_reloc.offset = 0;
ctx->dummy_rt_reloc.flags = ETNA_RELOC_READ | ETNA_RELOC_WRITE;
if (screen->specs.halti >= 5) {
/* Create an empty dummy texture descriptor */
ctx->dummy_desc_bo = etna_bo_new(ctx->screen->dev, 0x100, DRM_ETNA_GEM_CACHE_WC);
if (!ctx->dummy_desc_bo)
goto fail;
uint32_t *buf = etna_bo_map(ctx->dummy_desc_bo);
etna_bo_cpu_prep(ctx->dummy_desc_bo, DRM_ETNA_PREP_WRITE);
memset(buf, 0, 0x100);
etna_bo_cpu_fini(ctx->dummy_desc_bo);
ctx->DUMMY_DESC_ADDR.bo = ctx->dummy_desc_bo;
ctx->DUMMY_DESC_ADDR.offset = 0;
ctx->DUMMY_DESC_ADDR.flags = ETNA_RELOC_READ;
}
return pctx;
fail:
pctx->destroy(pctx);
return NULL;
}
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