>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: Rodrigo Siqueira <sique...@igalia.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 69 +++++++++++++++++++++++++
drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h | 3 ++
2 files changed, 72 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
index 7fc4e62536e1..b86ebbba59aa 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
@@ -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)
@@ -2241,6 +2242,74 @@ 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.
*/
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
index caaddab31023..c359530e530e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
@@ -598,6 +598,9 @@ 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);
--
2.49.0
