2014-05-14 14:02:16 +00:00
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/*
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* Copyright © 2014 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors:
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* Mika Kuoppala <mika.kuoppala@intel.com>
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*
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*/
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#include "i915_drv.h"
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#include "intel_renderstate.h"
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static const struct intel_renderstate_rodata *
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render_state_get_rodata(struct drm_device *dev, const int gen)
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{
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switch (gen) {
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case 6:
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return &gen6_null_state;
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case 7:
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return &gen7_null_state;
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case 8:
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return &gen8_null_state;
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2014-10-23 15:34:28 +00:00
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case 9:
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return &gen9_null_state;
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2014-05-14 14:02:16 +00:00
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}
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return NULL;
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}
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2014-06-10 10:23:33 +00:00
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static int render_state_init(struct render_state *so, struct drm_device *dev)
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2014-05-14 14:02:16 +00:00
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{
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int ret;
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2014-06-10 10:23:33 +00:00
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so->gen = INTEL_INFO(dev)->gen;
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so->rodata = render_state_get_rodata(dev, so->gen);
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if (so->rodata == NULL)
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return 0;
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if (so->rodata->batch_items * 4 > 4096)
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2014-05-14 14:02:16 +00:00
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return -EINVAL;
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2014-06-10 10:23:33 +00:00
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so->obj = i915_gem_alloc_object(dev, 4096);
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if (so->obj == NULL)
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return -ENOMEM;
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ret = i915_gem_obj_ggtt_pin(so->obj, 4096, 0);
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if (ret)
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goto free_gem;
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so->ggtt_offset = i915_gem_obj_ggtt_offset(so->obj);
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return 0;
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free_gem:
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drm_gem_object_unreference(&so->obj->base);
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return ret;
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}
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2015-07-20 09:46:10 +00:00
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/*
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* Macro to add commands to auxiliary batch.
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* This macro only checks for page overflow before inserting the commands,
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* this is sufficient as the null state generator makes the final batch
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* with two passes to build command and state separately. At this point
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* the size of both are known and it compacts them by relocating the state
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* right after the commands taking care of aligment so we should sufficient
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* space below them for adding new commands.
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*/
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#define OUT_BATCH(batch, i, val) \
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do { \
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if (WARN_ON((i) >= PAGE_SIZE / sizeof(u32))) { \
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ret = -ENOSPC; \
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goto err_out; \
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} \
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(batch)[(i)++] = (val); \
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} while(0)
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2014-06-10 10:23:33 +00:00
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static int render_state_setup(struct render_state *so)
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{
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const struct intel_renderstate_rodata *rodata = so->rodata;
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unsigned int i = 0, reloc_index = 0;
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struct page *page;
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u32 *d;
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int ret;
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2014-05-14 14:02:16 +00:00
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ret = i915_gem_object_set_to_cpu_domain(so->obj, true);
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if (ret)
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return ret;
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2014-06-10 10:23:33 +00:00
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page = sg_page(so->obj->pages->sgl);
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d = kmap(page);
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2014-05-14 14:02:16 +00:00
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while (i < rodata->batch_items) {
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u32 s = rodata->batch[i];
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2014-06-10 10:23:33 +00:00
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if (i * 4 == rodata->reloc[reloc_index]) {
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u64 r = s + so->ggtt_offset;
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s = lower_32_bits(r);
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if (so->gen >= 8) {
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2014-05-14 14:02:16 +00:00
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if (i + 1 >= rodata->batch_items ||
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2015-07-17 16:08:51 +00:00
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rodata->batch[i + 1] != 0) {
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ret = -EINVAL;
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goto err_out;
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}
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2014-05-14 14:02:16 +00:00
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2014-06-10 10:23:33 +00:00
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d[i++] = s;
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s = upper_32_bits(r);
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2014-05-14 14:02:16 +00:00
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}
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reloc_index++;
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}
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2014-06-10 10:23:33 +00:00
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d[i++] = s;
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2014-05-14 14:02:16 +00:00
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}
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2015-07-20 09:46:10 +00:00
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while (i % CACHELINE_DWORDS)
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OUT_BATCH(d, i, MI_NOOP);
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so->aux_batch_offset = i * sizeof(u32);
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OUT_BATCH(d, i, MI_BATCH_BUFFER_END);
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so->aux_batch_size = (i * sizeof(u32)) - so->aux_batch_offset;
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/*
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* Since we are sending length, we need to strictly conform to
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* all requirements. For Gen2 this must be a multiple of 8.
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*/
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so->aux_batch_size = ALIGN(so->aux_batch_size, 8);
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2014-06-10 10:23:33 +00:00
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kunmap(page);
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2014-05-14 14:02:16 +00:00
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ret = i915_gem_object_set_to_gtt_domain(so->obj, false);
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if (ret)
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return ret;
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2014-06-10 10:23:33 +00:00
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if (rodata->reloc[reloc_index] != -1) {
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DRM_ERROR("only %d relocs resolved\n", reloc_index);
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2014-05-14 14:02:16 +00:00
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return -EINVAL;
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}
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return 0;
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2015-07-17 16:08:51 +00:00
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err_out:
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kunmap(page);
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return ret;
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2014-05-14 14:02:16 +00:00
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}
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2015-07-20 09:46:10 +00:00
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#undef OUT_BATCH
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2014-08-21 10:40:54 +00:00
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void i915_gem_render_state_fini(struct render_state *so)
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2014-06-10 10:23:33 +00:00
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{
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i915_gem_object_ggtt_unpin(so->obj);
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drm_gem_object_unreference(&so->obj->base);
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}
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2014-08-21 10:40:54 +00:00
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int i915_gem_render_state_prepare(struct intel_engine_cs *ring,
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struct render_state *so)
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2014-05-14 14:02:16 +00:00
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{
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int ret;
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2014-05-21 16:01:06 +00:00
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if (WARN_ON(ring->id != RCS))
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return -ENOENT;
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2014-08-21 10:40:54 +00:00
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ret = render_state_init(so, ring->dev);
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2014-06-10 10:23:33 +00:00
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if (ret)
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return ret;
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2014-05-14 14:02:16 +00:00
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2014-08-21 10:40:54 +00:00
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if (so->rodata == NULL)
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2014-06-10 10:23:33 +00:00
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return 0;
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2014-05-14 14:02:16 +00:00
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2014-08-21 10:40:54 +00:00
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ret = render_state_setup(so);
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if (ret) {
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i915_gem_render_state_fini(so);
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return ret;
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}
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return 0;
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}
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2015-05-29 16:43:45 +00:00
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int i915_gem_render_state_init(struct drm_i915_gem_request *req)
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2014-08-21 10:40:54 +00:00
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{
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struct render_state so;
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int ret;
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2015-05-29 16:43:45 +00:00
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ret = i915_gem_render_state_prepare(req->ring, &so);
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2014-05-14 14:02:16 +00:00
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if (ret)
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2014-08-21 10:40:54 +00:00
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return ret;
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if (so.rodata == NULL)
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return 0;
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2014-05-14 14:02:16 +00:00
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2015-05-29 16:44:02 +00:00
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ret = req->ring->dispatch_execbuffer(req, so.ggtt_offset,
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2015-05-29 16:43:45 +00:00
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so.rodata->batch_items * 4,
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I915_DISPATCH_SECURE);
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2014-05-14 14:02:16 +00:00
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if (ret)
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goto out;
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2015-07-20 09:46:10 +00:00
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if (so.aux_batch_size > 8) {
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ret = req->ring->dispatch_execbuffer(req,
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(so.ggtt_offset +
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so.aux_batch_offset),
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so.aux_batch_size,
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I915_DISPATCH_SECURE);
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if (ret)
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goto out;
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}
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2015-05-29 16:43:50 +00:00
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i915_vma_move_to_active(i915_gem_obj_to_ggtt(so.obj), req);
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2014-05-14 14:02:16 +00:00
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out:
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2014-08-21 10:40:54 +00:00
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i915_gem_render_state_fini(&so);
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2014-05-14 14:02:16 +00:00
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return ret;
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}
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