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/*
* Mesa 3-D graphics library
*
* Copyright (C) 2014 LunarG, 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 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:
* Chia-I Wu <olv@lunarg.com>
*/
#include "genhw/genhw.h"
#include "core/ilo_builder_media.h"
#include "core/ilo_builder_mi.h"
#include "core/ilo_builder_render.h"
#include "ilo_shader.h"
#include "ilo_state.h"
#include "ilo_render_gen.h"
struct gen7_l3_config {
int slm;
int urb;
int rest;
int dc;
int ro;
int is;
int c;
int t;
};
/*
* From the Ivy Bridge PRM, volume 1 part 7, page 10:
*
* "Normal L3/URB mode (non-SLM mode), uses all 4 banks of L3 equally to
* distribute cycles. The following allocation is a suggested programming
* model. Note all numbers below are given in KBytes."
*
* From the Haswell PRM, volume 7, page 662:
*
* "The configuration for {SLM = 0,URB = 224,DC = 32,RO = 256,IS = 0,C =
* 0,T =0, SUM 512} was validated as a later supported configuration and
* can be utilized if desired."
*/
static const struct gen7_l3_config gen7_l3_non_slm_configs[] = {
/* SLM URB Rest DC RO I/S C T */
[0] = { 0, 256, 0, 0, 256, 0, 0, 0, },
[1] = { 0, 256, 0, 128, 128, 0, 0, 0, },
[2] = { 0, 256, 0, 32, 0, 64, 32, 128, },
[3] = { 0, 224, 0, 64, 0, 64, 32, 128, },
[4] = { 0, 224, 0, 128, 0, 64, 32, 64, },
[5] = { 0, 224, 0, 64, 0, 128, 32, 64, },
[6] = { 0, 224, 0, 0, 0, 128, 32, 128, },
[7] = { 0, 256, 0, 0, 0, 128, 0, 128, },
[8] = { 0, 224, 0, 32, 256, 0, 0, 0, },
};
/*
* From the Ivy Bridge PRM, volume 1 part 7, page 11:
*
* "With the existence of Shared Local Memory, a 64KB chunk from each of
* the 2 L3 banks will be reserved for SLM usage. The remaining cache
* space is divided between the remaining clients. SLM allocation is done
* via reducing the number of ways on the two banks from 64 to 32."
*
* From the Haswell PRM, volume 7, page 662:
*
* "The configuration for {SLM = 128,URB = 128,DC = 0,RO = 256,IS = 0,C =
* 0,T =0, SUM 512} was validated as a later supported configuration and
* can be utilized if desired. For this configuration, global atomics
* must be programmed to be in GTI."
*/
static const struct gen7_l3_config gen7_l3_slm_configs[] = {
/* SLM URB Rest DC RO I/S C T */
[0] = { 128, 128, 0, 128, 128, 0, 0, 0, },
[1] = { 128, 128, 0, 64, 0, 64, 64, 64, },
[2] = { 128, 128, 0, 32, 0, 64, 32, 128, },
[3] = { 128, 128, 0, 32, 0, 128, 32, 64, },
[4] = { 128, 128, 0, 0, 256, 0, 0, 0, },
};
static void
gen7_launch_grid_l3(struct ilo_render *r, bool use_slm)
{
uint32_t l3sqcreg1, l3cntlreg2, l3cntlreg3;
const struct gen7_l3_config *conf;
/*
* This function mostly follows what beignet does. I do not know why, for
* example, CON4DCUNC should be reset. I do not know if it should be set
* again after launch_grid().
*/
ILO_DEV_ASSERT(r->dev, 7, 7.5);
if (use_slm)
conf = &gen7_l3_slm_configs[1];
else
conf = &gen7_l3_non_slm_configs[4];
/* unset GEN7_REG_L3SQCREG1_CON4DCUNC (without readback first) */
if (ilo_dev_gen(r->dev) >= ILO_GEN(7.5)) {
l3sqcreg1 = GEN75_REG_L3SQCREG1_SQGPCI_24 |
GEN75_REG_L3SQCREG1_SQHPCI_8;
} else {
l3sqcreg1 = GEN7_REG_L3SQCREG1_SQGHPCI_18_6;
}
l3cntlreg2 = (conf->dc / 8) << GEN7_REG_L3CNTLREG2_DCWASS__SHIFT |
(conf->ro / 8) << GEN7_REG_L3CNTLREG2_RDOCPL__SHIFT |
(conf->urb / 8) << GEN7_REG_L3CNTLREG2_URBALL__SHIFT;
l3cntlreg3 = (conf->t / 8) << GEN7_REG_L3CNTLREG3_TXWYALL__SHIFT |
(conf->c / 8) << GEN7_REG_L3CNTLREG3_CTWYALL__SHIFT |
(conf->is / 8) << GEN7_REG_L3CNTLREG3_ISWYALL__SHIFT;
if (conf->slm) {
/*
* From the Ivy Bridge PRM, volume 1 part 7, page 11:
*
* "Note that URB needs to be set as low b/w client in SLM mode,
* else the hash will fail. This is a required s/w model."
*/
l3cntlreg2 |= GEN7_REG_L3CNTLREG2_URBSLMB |
GEN7_REG_L3CNTLREG2_SLMMENB;
}
gen6_MI_LOAD_REGISTER_IMM(r->builder, GEN7_REG_L3SQCREG1, l3sqcreg1);
gen6_MI_LOAD_REGISTER_IMM(r->builder, GEN7_REG_L3CNTLREG2, l3cntlreg2);
gen6_MI_LOAD_REGISTER_IMM(r->builder, GEN7_REG_L3CNTLREG3, l3cntlreg3);
}
int
ilo_render_get_launch_grid_commands_len(const struct ilo_render *render,
const struct ilo_state_vector *vec)
{
static int len;
ILO_DEV_ASSERT(render->dev, 7, 7.5);
if (!len) {
len +=
GEN6_PIPELINE_SELECT__SIZE +
GEN6_STATE_BASE_ADDRESS__SIZE +
GEN6_MEDIA_VFE_STATE__SIZE +
GEN6_MEDIA_CURBE_LOAD__SIZE +
GEN6_MEDIA_INTERFACE_DESCRIPTOR_LOAD__SIZE +
GEN6_MEDIA_STATE_FLUSH__SIZE;
len += ilo_render_get_flush_len(render) * 3;
if (ilo_dev_gen(render->dev) >= ILO_GEN(7)) {
len += GEN6_MI_LOAD_REGISTER_IMM__SIZE * 3 * 2;
len += GEN7_GPGPU_WALKER__SIZE;
}
}
return len;
}
void
ilo_render_emit_launch_grid_commands(struct ilo_render *render,
const struct ilo_state_vector *vec,
const struct ilo_render_launch_grid_session *session)
{
const unsigned batch_used = ilo_builder_batch_used(render->builder);
const uint32_t pcb = render->state.cs.PUSH_CONSTANT_BUFFER;
const int pcb_size = render->state.cs.PUSH_CONSTANT_BUFFER_size;
int simd_size;
bool use_slm;
ILO_DEV_ASSERT(render->dev, 7, 7.5);
simd_size = ilo_shader_get_kernel_param(vec->cs, ILO_KERNEL_CS_SIMD_SIZE);
use_slm = ilo_shader_get_kernel_param(vec->cs, ILO_KERNEL_CS_LOCAL_SIZE);
ilo_render_emit_flush(render);
if (ilo_dev_gen(render->dev) >= ILO_GEN(7)) {
gen7_launch_grid_l3(render, use_slm);
ilo_render_emit_flush(render);
gen6_PIPELINE_SELECT(render->builder,
GEN7_PIPELINE_SELECT_DW0_SELECT_GPGPU);
} else {
gen6_PIPELINE_SELECT(render->builder,
GEN6_PIPELINE_SELECT_DW0_SELECT_MEDIA);
}
gen6_state_base_address(render->builder, true);
gen6_MEDIA_VFE_STATE(render->builder, &session->compute);
if (pcb_size)
gen6_MEDIA_CURBE_LOAD(render->builder, pcb, pcb_size);
gen6_MEDIA_INTERFACE_DESCRIPTOR_LOAD(render->builder,
session->idrt, session->idrt_size);
gen7_GPGPU_WALKER(render->builder, session->thread_group_offset,
session->thread_group_dim, session->thread_group_size, simd_size);
gen6_MEDIA_STATE_FLUSH(render->builder);
if (ilo_dev_gen(render->dev) >= ILO_GEN(7) && use_slm) {
ilo_render_emit_flush(render);
gen7_launch_grid_l3(render, false);
}
assert(ilo_builder_batch_used(render->builder) <= batch_used +
ilo_render_get_launch_grid_commands_len(render, vec));
}
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