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/*
* 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
* on 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 AUTHOR(S) AND/OR THEIR SUPPLIERS 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 <marek.olsak@amd.com>
*/
#include "../radeon/r600_cs.h"
#include "radeonsi_pipe.h"
#include "radeonsi_resource.h"
#include "radeonsi_shader.h"
#include "util/u_memory.h"
#define SI_NUM_CONTEXTS 256
static const uint32_t null_desc[8]; /* zeros */
/* Set this if you want the 3D engine to wait until CP DMA is done.
* It should be set on the last CP DMA packet. */
#define R600_CP_DMA_SYNC (1 << 0) /* R600+ */
/* Set this if the source data was used as a destination in a previous CP DMA
* packet. It's for preventing a read-after-write (RAW) hazard between two
* CP DMA packets. */
#define SI_CP_DMA_RAW_WAIT (1 << 1) /* SI+ */
/* Emit a CP DMA packet to do a copy from one buffer to another.
* The size must fit in bits [20:0]. Notes:
*/
static void si_emit_cp_dma_copy_buffer(struct r600_context *rctx,
uint64_t dst_va, uint64_t src_va,
unsigned size, unsigned flags)
{
struct radeon_winsys_cs *cs = rctx->b.rings.gfx.cs;
uint32_t sync_flag = flags & R600_CP_DMA_SYNC ? PKT3_CP_DMA_CP_SYNC : 0;
uint32_t raw_wait = flags & SI_CP_DMA_RAW_WAIT ? PKT3_CP_DMA_CMD_RAW_WAIT : 0;
assert(size);
assert((size & ((1<<21)-1)) == size);
if (rctx->b.chip_class >= CIK) {
radeon_emit(cs, PKT3(PKT3_DMA_DATA, 5, 0));
radeon_emit(cs, sync_flag); /* CP_SYNC [31] */
radeon_emit(cs, src_va); /* SRC_ADDR_LO [31:0] */
radeon_emit(cs, src_va >> 32); /* SRC_ADDR_HI [31:0] */
radeon_emit(cs, dst_va); /* DST_ADDR_LO [31:0] */
radeon_emit(cs, dst_va >> 32); /* DST_ADDR_HI [31:0] */
radeon_emit(cs, size | raw_wait); /* COMMAND [29:22] | BYTE_COUNT [20:0] */
} else {
radeon_emit(cs, PKT3(PKT3_CP_DMA, 4, 0));
radeon_emit(cs, src_va); /* SRC_ADDR_LO [31:0] */
radeon_emit(cs, sync_flag | ((src_va >> 32) & 0xffff)); /* CP_SYNC [31] | SRC_ADDR_HI [15:0] */
radeon_emit(cs, dst_va); /* DST_ADDR_LO [31:0] */
radeon_emit(cs, (dst_va >> 32) & 0xffff); /* DST_ADDR_HI [15:0] */
radeon_emit(cs, size | raw_wait); /* COMMAND [29:22] | BYTE_COUNT [20:0] */
}
}
/* Emit a CP DMA packet to clear a buffer. The size must fit in bits [20:0]. */
static void si_emit_cp_dma_clear_buffer(struct r600_context *rctx,
uint64_t dst_va, unsigned size,
uint32_t clear_value, unsigned flags)
{
struct radeon_winsys_cs *cs = rctx->b.rings.gfx.cs;
uint32_t sync_flag = flags & R600_CP_DMA_SYNC ? PKT3_CP_DMA_CP_SYNC : 0;
uint32_t raw_wait = flags & SI_CP_DMA_RAW_WAIT ? PKT3_CP_DMA_CMD_RAW_WAIT : 0;
assert(size);
assert((size & ((1<<21)-1)) == size);
if (rctx->b.chip_class >= CIK) {
radeon_emit(cs, PKT3(PKT3_DMA_DATA, 5, 0));
radeon_emit(cs, sync_flag | PKT3_CP_DMA_SRC_SEL(2)); /* CP_SYNC [31] | SRC_SEL[30:29] */
radeon_emit(cs, clear_value); /* DATA [31:0] */
radeon_emit(cs, 0);
radeon_emit(cs, dst_va); /* DST_ADDR_LO [31:0] */
radeon_emit(cs, dst_va >> 32); /* DST_ADDR_HI [15:0] */
radeon_emit(cs, size | raw_wait); /* COMMAND [29:22] | BYTE_COUNT [20:0] */
} else {
radeon_emit(cs, PKT3(PKT3_CP_DMA, 4, 0));
radeon_emit(cs, clear_value); /* DATA [31:0] */
radeon_emit(cs, sync_flag | PKT3_CP_DMA_SRC_SEL(2)); /* CP_SYNC [31] | SRC_SEL[30:29] */
radeon_emit(cs, dst_va); /* DST_ADDR_LO [31:0] */
radeon_emit(cs, (dst_va >> 32) & 0xffff); /* DST_ADDR_HI [15:0] */
radeon_emit(cs, size | raw_wait); /* COMMAND [29:22] | BYTE_COUNT [20:0] */
}
}
static void si_init_descriptors(struct r600_context *rctx,
struct si_descriptors *desc,
unsigned shader_userdata_reg,
unsigned element_dw_size,
unsigned num_elements,
void (*emit_func)(struct r600_context *ctx, struct r600_atom *state))
{
uint64_t va;
assert(num_elements <= sizeof(desc->enabled_mask)*8);
assert(num_elements <= sizeof(desc->dirty_mask)*8);
desc->atom.emit = (void*)emit_func;
desc->shader_userdata_reg = shader_userdata_reg;
desc->element_dw_size = element_dw_size;
desc->num_elements = num_elements;
desc->context_size = num_elements * element_dw_size * 4;
desc->buffer = (struct r600_resource*)
pipe_buffer_create(rctx->b.b.screen, PIPE_BIND_CUSTOM,
PIPE_USAGE_STATIC,
SI_NUM_CONTEXTS * desc->context_size);
r600_context_bo_reloc(&rctx->b, &rctx->b.rings.gfx, desc->buffer, RADEON_USAGE_READWRITE);
va = r600_resource_va(rctx->b.b.screen, &desc->buffer->b.b);
/* We don't check for CS space here, because this should be called
* only once at context initialization. */
si_emit_cp_dma_clear_buffer(rctx, va, desc->buffer->b.b.width0, 0,
R600_CP_DMA_SYNC);
}
static void si_release_descriptors(struct si_descriptors *desc)
{
pipe_resource_reference((struct pipe_resource**)&desc->buffer, NULL);
}
static void si_update_descriptors(struct si_descriptors *desc)
{
if (desc->dirty_mask) {
desc->atom.num_dw =
7 + /* copy */
(4 + desc->element_dw_size) * util_bitcount(desc->dirty_mask) + /* update */
4; /* pointer update */
desc->atom.dirty = true;
} else {
desc->atom.dirty = false;
}
}
static void si_emit_shader_pointer(struct r600_context *rctx,
struct si_descriptors *desc)
{
struct radeon_winsys_cs *cs = rctx->b.rings.gfx.cs;
uint64_t va = r600_resource_va(rctx->b.b.screen, &desc->buffer->b.b) +
desc->current_context_id * desc->context_size;
radeon_emit(cs, PKT3(PKT3_SET_SH_REG, 2, 0));
radeon_emit(cs, (desc->shader_userdata_reg - SI_SH_REG_OFFSET) >> 2);
radeon_emit(cs, va);
radeon_emit(cs, va >> 32);
}
static void si_emit_descriptors(struct r600_context *rctx,
struct si_descriptors *desc,
const uint32_t **descriptors)
{
struct radeon_winsys_cs *cs = rctx->b.rings.gfx.cs;
uint64_t va_base;
int packet_start;
int packet_size = 0;
int last_index = desc->num_elements; /* point to a non-existing element */
unsigned dirty_mask = desc->dirty_mask;
unsigned new_context_id = (desc->current_context_id + 1) % SI_NUM_CONTEXTS;
assert(dirty_mask);
va_base = r600_resource_va(rctx->b.b.screen, &desc->buffer->b.b);
/* Copy the descriptors to a new context slot. */
si_emit_cp_dma_copy_buffer(rctx,
va_base + new_context_id * desc->context_size,
va_base + desc->current_context_id * desc->context_size,
desc->context_size, R600_CP_DMA_SYNC);
va_base += new_context_id * desc->context_size;
/* Update the descriptors.
* Updates of consecutive descriptors are merged to one WRITE_DATA packet.
*
* XXX When unbinding lots of resources, consider clearing the memory
* with CP DMA instead of emitting zeros.
*/
while (dirty_mask) {
int i = u_bit_scan(&dirty_mask);
assert(i < desc->num_elements);
if (last_index+1 == i && packet_size) {
/* Append new data at the end of the last packet. */
packet_size += desc->element_dw_size;
cs->buf[packet_start] = PKT3(PKT3_WRITE_DATA, packet_size, 0);
} else {
/* Start a new packet. */
uint64_t va = va_base + i * desc->element_dw_size * 4;
packet_start = cs->cdw;
packet_size = 2 + desc->element_dw_size;
radeon_emit(cs, PKT3(PKT3_WRITE_DATA, packet_size, 0));
radeon_emit(cs, PKT3_WRITE_DATA_DST_SEL(PKT3_WRITE_DATA_DST_SEL_MEM_SYNC) |
PKT3_WRITE_DATA_WR_CONFIRM |
PKT3_WRITE_DATA_ENGINE_SEL(PKT3_WRITE_DATA_ENGINE_SEL_ME));
radeon_emit(cs, va & 0xFFFFFFFFUL);
radeon_emit(cs, (va >> 32UL) & 0xFFFFFFFFUL);
}
radeon_emit_array(cs, descriptors[i], desc->element_dw_size);
last_index = i;
}
desc->dirty_mask = 0;
desc->current_context_id = new_context_id;
/* Now update the shader userdata pointer. */
si_emit_shader_pointer(rctx, desc);
}
static unsigned si_get_shader_user_data_base(unsigned shader)
{
switch (shader) {
case PIPE_SHADER_VERTEX:
return R_00B130_SPI_SHADER_USER_DATA_VS_0;
case PIPE_SHADER_GEOMETRY:
return R_00B230_SPI_SHADER_USER_DATA_GS_0;
case PIPE_SHADER_FRAGMENT:
return R_00B030_SPI_SHADER_USER_DATA_PS_0;
default:
assert(0);
return 0;
}
}
/* SAMPLER VIEWS */
static void si_emit_sampler_views(struct r600_context *rctx, struct r600_atom *atom)
{
struct si_sampler_views *views = (struct si_sampler_views*)atom;
si_emit_descriptors(rctx, &views->desc, views->desc_data);
}
static void si_init_sampler_views(struct r600_context *rctx,
struct si_sampler_views *views,
unsigned shader)
{
si_init_descriptors(rctx, &views->desc,
si_get_shader_user_data_base(shader) +
SI_SGPR_RESOURCE * 4,
8, NUM_SAMPLER_VIEWS, si_emit_sampler_views);
}
static void si_release_sampler_views(struct si_sampler_views *views)
{
int i;
for (i = 0; i < Elements(views->views); i++) {
pipe_sampler_view_reference(&views->views[i], NULL);
}
si_release_descriptors(&views->desc);
}
static void si_sampler_views_begin_new_cs(struct r600_context *rctx,
struct si_sampler_views *views)
{
unsigned mask = views->desc.enabled_mask;
/* Add relocations to the CS. */
while (mask) {
int i = u_bit_scan(&mask);
struct si_pipe_sampler_view *rview =
(struct si_pipe_sampler_view*)views->views[i];
r600_context_bo_reloc(&rctx->b, &rctx->b.rings.gfx, rview->resource, RADEON_USAGE_READ);
}
r600_context_bo_reloc(&rctx->b, &rctx->b.rings.gfx, views->desc.buffer, RADEON_USAGE_READWRITE);
si_emit_shader_pointer(rctx, &views->desc);
}
void si_set_sampler_view(struct r600_context *rctx, unsigned shader,
unsigned slot, struct pipe_sampler_view *view,
unsigned *view_desc)
{
struct si_sampler_views *views = &rctx->samplers[shader].views;
if (views->views[slot] == view)
return;
if (view) {
struct si_pipe_sampler_view *rview =
(struct si_pipe_sampler_view*)view;
r600_context_bo_reloc(&rctx->b, &rctx->b.rings.gfx, rview->resource, RADEON_USAGE_READ);
pipe_sampler_view_reference(&views->views[slot], view);
views->desc_data[slot] = view_desc;
views->desc.enabled_mask |= 1 << slot;
} else {
pipe_sampler_view_reference(&views->views[slot], NULL);
views->desc_data[slot] = null_desc;
views->desc.enabled_mask &= ~(1 << slot);
}
views->desc.dirty_mask |= 1 << slot;
si_update_descriptors(&views->desc);
}
/* INIT/DEINIT */
void si_init_all_descriptors(struct r600_context *rctx)
{
int i;
for (i = 0; i < SI_NUM_SHADERS; i++) {
si_init_sampler_views(rctx, &rctx->samplers[i].views, i);
rctx->atoms.sampler_views[i] = &rctx->samplers[i].views.desc.atom;
}
}
void si_release_all_descriptors(struct r600_context *rctx)
{
int i;
for (i = 0; i < SI_NUM_SHADERS; i++) {
si_release_sampler_views(&rctx->samplers[i].views);
}
}
void si_all_descriptors_begin_new_cs(struct r600_context *rctx)
{
int i;
for (i = 0; i < SI_NUM_SHADERS; i++) {
si_sampler_views_begin_new_cs(rctx, &rctx->samplers[i].views);
}
}
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