From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- .../drivers/gpu/drm/i915/i915_gem_render_state.c | 181 +++++++++++++++++++++ 1 file changed, 181 insertions(+) create mode 100644 kernel/drivers/gpu/drm/i915/i915_gem_render_state.c (limited to 'kernel/drivers/gpu/drm/i915/i915_gem_render_state.c') diff --git a/kernel/drivers/gpu/drm/i915/i915_gem_render_state.c b/kernel/drivers/gpu/drm/i915/i915_gem_render_state.c new file mode 100644 index 000000000..521548a08 --- /dev/null +++ b/kernel/drivers/gpu/drm/i915/i915_gem_render_state.c @@ -0,0 +1,181 @@ +/* + * Copyright © 2014 Intel Corporation + * + * 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: + * Mika Kuoppala + * + */ + +#include "i915_drv.h" +#include "intel_renderstate.h" + +static const struct intel_renderstate_rodata * +render_state_get_rodata(struct drm_device *dev, const int gen) +{ + switch (gen) { + case 6: + return &gen6_null_state; + case 7: + return &gen7_null_state; + case 8: + return &gen8_null_state; + case 9: + return &gen9_null_state; + } + + return NULL; +} + +static int render_state_init(struct render_state *so, struct drm_device *dev) +{ + int ret; + + so->gen = INTEL_INFO(dev)->gen; + so->rodata = render_state_get_rodata(dev, so->gen); + if (so->rodata == NULL) + return 0; + + if (so->rodata->batch_items * 4 > 4096) + return -EINVAL; + + so->obj = i915_gem_alloc_object(dev, 4096); + if (so->obj == NULL) + return -ENOMEM; + + ret = i915_gem_obj_ggtt_pin(so->obj, 4096, 0); + if (ret) + goto free_gem; + + so->ggtt_offset = i915_gem_obj_ggtt_offset(so->obj); + return 0; + +free_gem: + drm_gem_object_unreference(&so->obj->base); + return ret; +} + +static int render_state_setup(struct render_state *so) +{ + const struct intel_renderstate_rodata *rodata = so->rodata; + unsigned int i = 0, reloc_index = 0; + struct page *page; + u32 *d; + int ret; + + ret = i915_gem_object_set_to_cpu_domain(so->obj, true); + if (ret) + return ret; + + page = sg_page(so->obj->pages->sgl); + d = kmap(page); + + while (i < rodata->batch_items) { + u32 s = rodata->batch[i]; + + if (i * 4 == rodata->reloc[reloc_index]) { + u64 r = s + so->ggtt_offset; + s = lower_32_bits(r); + if (so->gen >= 8) { + if (i + 1 >= rodata->batch_items || + rodata->batch[i + 1] != 0) + return -EINVAL; + + d[i++] = s; + s = upper_32_bits(r); + } + + reloc_index++; + } + + d[i++] = s; + } + kunmap(page); + + ret = i915_gem_object_set_to_gtt_domain(so->obj, false); + if (ret) + return ret; + + if (rodata->reloc[reloc_index] != -1) { + DRM_ERROR("only %d relocs resolved\n", reloc_index); + return -EINVAL; + } + + return 0; +} + +void i915_gem_render_state_fini(struct render_state *so) +{ + i915_gem_object_ggtt_unpin(so->obj); + drm_gem_object_unreference(&so->obj->base); +} + +int i915_gem_render_state_prepare(struct intel_engine_cs *ring, + struct render_state *so) +{ + int ret; + + if (WARN_ON(ring->id != RCS)) + return -ENOENT; + + ret = render_state_init(so, ring->dev); + if (ret) + return ret; + + if (so->rodata == NULL) + return 0; + + ret = render_state_setup(so); + if (ret) { + i915_gem_render_state_fini(so); + return ret; + } + + return 0; +} + +int i915_gem_render_state_init(struct intel_engine_cs *ring) +{ + struct render_state so; + int ret; + + ret = i915_gem_render_state_prepare(ring, &so); + if (ret) + return ret; + + if (so.rodata == NULL) + return 0; + + ret = ring->dispatch_execbuffer(ring, + so.ggtt_offset, + so.rodata->batch_items * 4, + I915_DISPATCH_SECURE); + if (ret) + goto out; + + i915_vma_move_to_active(i915_gem_obj_to_ggtt(so.obj), ring); + + ret = __i915_add_request(ring, NULL, so.obj); + /* __i915_add_request moves object to inactive if it fails */ +out: + i915_gem_render_state_fini(&so); + return ret; +} -- cgit 1.2.3-korg