Commit 9718f745 authored by Rodrigo Siqueira's avatar Rodrigo Siqueira Committed by Alex Deucher
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drm/amdgpu/gfx: Introduce helpers handling CSB manipulation 



From GFX6 to GFX11, there is a function for getting the CSB buffer to be
put into the hardware. Three common parts are duplicated in all of these
GFX functions:

1. Prepare the CSB preamble.
2. Parser the CS data.
3. End the CSB preamble.

This commit creates helpers to be used from GFX6 to GFX11.

Signed-off-by: default avatarRodrigo Siqueira <siqueira@igalia.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 5a2658fd

drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c

+69 −0
Original line number Diff line number Diff line
@@ -33,6 +33,7 @@ 
#include "amdgpu_reset.h"

#include "amdgpu_xcp.h"

#include "amdgpu_xgmi.h"

#include "nvd.h"



/* delay 0.1 second to enable gfx off feature */

#define GFX_OFF_DELAY_ENABLE         msecs_to_jiffies(100)
@@ -2257,6 +2258,74 @@ void amdgpu_gfx_profile_ring_end_use(struct amdgpu_ring *ring) 
	schedule_delayed_work(&ring->adev->gfx.idle_work, GFX_PROFILE_IDLE_TIMEOUT);

}



/**

 * amdgpu_gfx_csb_preamble_start - Set CSB preamble start

 *

 * @buffer: This is an output variable that gets the PACKET3 preamble setup.

 *

 * Return:

 * return the latest index.

 */

u32 amdgpu_gfx_csb_preamble_start(volatile u32 *buffer)

{

	u32 count = 0;



	buffer[count++] = cpu_to_le32(PACKET3(PACKET3_PREAMBLE_CNTL, 0));

	buffer[count++] = cpu_to_le32(PACKET3_PREAMBLE_BEGIN_CLEAR_STATE);



	buffer[count++] = cpu_to_le32(PACKET3(PACKET3_CONTEXT_CONTROL, 1));

	buffer[count++] = cpu_to_le32(0x80000000);

	buffer[count++] = cpu_to_le32(0x80000000);



	return count;

}



/**

 * amdgpu_gfx_csb_data_parser - Parser CS data

 *

 * @adev: amdgpu_device pointer used to get the CS data and other gfx info.

 * @buffer: This is an output variable that gets the PACKET3 preamble end.

 * @count: Index to start set the preemble end.

 *

 * Return:

 * return the latest index.

 */

u32 amdgpu_gfx_csb_data_parser(struct amdgpu_device *adev, volatile u32 *buffer, u32 count)

{

	const struct cs_section_def *sect = NULL;

	const struct cs_extent_def *ext = NULL;

	u32 i;



	for (sect = adev->gfx.rlc.cs_data; sect->section != NULL; ++sect) {

		for (ext = sect->section; ext->extent != NULL; ++ext) {

			if (sect->id == SECT_CONTEXT) {

				buffer[count++] = cpu_to_le32(PACKET3(PACKET3_SET_CONTEXT_REG, ext->reg_count));

				buffer[count++] = cpu_to_le32(ext->reg_index - PACKET3_SET_CONTEXT_REG_START);



				for (i = 0; i < ext->reg_count; i++)

					buffer[count++] = cpu_to_le32(ext->extent[i]);

			}

		}

	}



	return count;

}



/**

 * amdgpu_gfx_csb_preamble_end - Set CSB preamble end

 *

 * @buffer: This is an output variable that gets the PACKET3 preamble end.

 * @count: Index to start set the preemble end.

 */

void amdgpu_gfx_csb_preamble_end(volatile u32 *buffer, u32 count)

{

	buffer[count++] = cpu_to_le32(PACKET3(PACKET3_PREAMBLE_CNTL, 0));

	buffer[count++] = cpu_to_le32(PACKET3_PREAMBLE_END_CLEAR_STATE);



	buffer[count++] = cpu_to_le32(PACKET3(PACKET3_CLEAR_STATE, 0));

	buffer[count++] = cpu_to_le32(0);

}



/*

 * debugfs for to enable/disable gfx job submission to specific core.

 */

drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h

+3 −0
Original line number Diff line number Diff line
@@ -599,6 +599,9 @@ void amdgpu_gfx_enforce_isolation_ring_end_use(struct amdgpu_ring *ring); 
void amdgpu_gfx_profile_idle_work_handler(struct work_struct *work);

void amdgpu_gfx_profile_ring_begin_use(struct amdgpu_ring *ring);

void amdgpu_gfx_profile_ring_end_use(struct amdgpu_ring *ring);

u32 amdgpu_gfx_csb_preamble_start(volatile u32 *buffer);

u32 amdgpu_gfx_csb_data_parser(struct amdgpu_device *adev, volatile u32 *buffer, u32 count);

void amdgpu_gfx_csb_preamble_end(volatile u32 *buffer, u32 count);



void amdgpu_debugfs_gfx_sched_mask_init(struct amdgpu_device *adev);

void amdgpu_debugfs_compute_sched_mask_init(struct amdgpu_device *adev);