drivers/gpu/drm/i915/gt/gen8_engine_cs.h

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/i915/gt/gen8_engine_cs.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/i915/gt/gen8_engine_cs.h
Extension
.h
Size
3877 bytes
Lines
143
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef __GEN8_ENGINE_CS_H__
#define __GEN8_ENGINE_CS_H__

#include <linux/string.h>
#include <linux/types.h>

#include "i915_gem.h" /* GEM_BUG_ON */
#include "intel_gt_regs.h"
#include "intel_gpu_commands.h"

struct intel_engine_cs;
struct intel_gt;
struct i915_request;

int gen8_emit_flush_rcs(struct i915_request *rq, u32 mode);
int gen11_emit_flush_rcs(struct i915_request *rq, u32 mode);
int gen12_emit_flush_rcs(struct i915_request *rq, u32 mode);

int gen8_emit_flush_xcs(struct i915_request *rq, u32 mode);
int gen12_emit_flush_xcs(struct i915_request *rq, u32 mode);

int gen8_emit_init_breadcrumb(struct i915_request *rq);

int gen8_emit_bb_start_noarb(struct i915_request *rq,
			     u64 offset, u32 len,
			     const unsigned int flags);
int gen8_emit_bb_start(struct i915_request *rq,
		       u64 offset, u32 len,
		       const unsigned int flags);

int xehp_emit_bb_start_noarb(struct i915_request *rq,
			     u64 offset, u32 len,
			     const unsigned int flags);
int xehp_emit_bb_start(struct i915_request *rq,
		       u64 offset, u32 len,
		       const unsigned int flags);

u32 *gen8_emit_fini_breadcrumb_xcs(struct i915_request *rq, u32 *cs);
u32 *gen12_emit_fini_breadcrumb_xcs(struct i915_request *rq, u32 *cs);

u32 *gen8_emit_fini_breadcrumb_rcs(struct i915_request *rq, u32 *cs);
u32 *gen11_emit_fini_breadcrumb_rcs(struct i915_request *rq, u32 *cs);
u32 *gen12_emit_fini_breadcrumb_rcs(struct i915_request *rq, u32 *cs);

u32 *gen12_emit_aux_table_inv(struct intel_engine_cs *engine, u32 *cs);

static inline u32 *
__gen8_emit_pipe_control(u32 *batch, u32 bit_group_0,
			 u32 bit_group_1, u32 offset)
{
	memset(batch, 0, 6 * sizeof(u32));

	batch[0] = GFX_OP_PIPE_CONTROL(6) | bit_group_0;
	batch[1] = bit_group_1;
	batch[2] = offset;

	return batch + 6;
}

static inline u32 *gen8_emit_pipe_control(u32 *batch,
					  u32 bit_group_1, u32 offset)
{
	return __gen8_emit_pipe_control(batch, 0, bit_group_1, offset);
}

static inline u32 *gen12_emit_pipe_control(u32 *batch, u32 bit_group_0,
					   u32 bit_group_1, u32 offset)
{
	return __gen8_emit_pipe_control(batch, bit_group_0,
					bit_group_1, offset);
}

static inline u32 *
__gen8_emit_write_rcs(u32 *cs, u32 value, u32 offset, u32 flags0, u32 flags1)
{
	*cs++ = GFX_OP_PIPE_CONTROL(6) | flags0;
	*cs++ = flags1 | PIPE_CONTROL_QW_WRITE;
	*cs++ = offset;
	*cs++ = 0;
	*cs++ = value;
	*cs++ = 0; /* We're thrashing one extra dword. */

	return cs;
}

static inline u32*
gen8_emit_ggtt_write_rcs(u32 *cs, u32 value, u32 gtt_offset, u32 flags)
{
	/* We're using qword write, offset should be aligned to 8 bytes. */
	GEM_BUG_ON(!IS_ALIGNED(gtt_offset, 8));

Annotation

Implementation Notes