github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-24 23:22:31 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

drm/xe/pf: Use GuC Buffer Cache during policy provisioning

Browse Source 
Start using GuC buffer cache for the SRIOV policy configuration
actions. This is a required step before we could declare SRIOV
PF as being a reclaim safe.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250124185247.676-1-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko 2025-01-24 19:52:47 +01:00
parent 897286f294
commit 14b6674608
1 changed files with 24 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

50
drivers/gpu/drm/xe/xe_gt_sriov_pf_policy.c
View File

@ -10,6 +10,7 @@
#include "xe_gt_sriov_pf_helpers.h"
#include "xe_gt_sriov_pf_policy.h"
#include "xe_gt_sriov_printk.h"
#include "xe_guc_buf.h"
#include "xe_guc_ct.h"
#include "xe_guc_klv_helpers.h"
#include "xe_pm.h"
@ -34,48 +35,28 @@ static int guc_action_update_vgt_policy(struct xe_guc *guc, u64 addr, u32 size)
* Return: number of KLVs that were successfully parsed and saved,
* negative error code on failure.
*/
static int pf_send_policy_klvs(struct xe_gt *gt, const u32 *klvs, u32 num_dwords)
static int pf_send_policy_klvs(struct xe_gt *gt, struct xe_guc_buf buf, u32 num_dwords)
{
const u32 bytes = num_dwords * sizeof(u32);
struct xe_tile *tile = gt_to_tile(gt);
struct xe_device *xe = tile_to_xe(tile);
struct xe_guc *guc = &gt->uc.guc;
struct xe_bo *bo;
int ret;
bo = xe_bo_create_pin_map(xe, tile, NULL,
ALIGN(bytes, PAGE_SIZE),
ttm_bo_type_kernel,
XE_BO_FLAG_VRAM_IF_DGFX(tile) |
XE_BO_FLAG_GGTT);
if (IS_ERR(bo))
return PTR_ERR(bo);
xe_map_memcpy_to(xe, &bo->vmap, 0, klvs, bytes);
ret = guc_action_update_vgt_policy(guc, xe_bo_ggtt_addr(bo), num_dwords);
xe_bo_unpin_map_no_vm(bo);
return ret;
return guc_action_update_vgt_policy(guc, xe_guc_buf_flush(buf), num_dwords);
}
/*
* Return: 0 on success, -ENOKEY if some KLVs were not updated, -EPROTO if reply was malformed,
* negative error code on failure.
*/
static int pf_push_policy_klvs(struct xe_gt *gt, u32 num_klvs,
const u32 *klvs, u32 num_dwords)
static int pf_push_policy_buf_klvs(struct xe_gt *gt, u32 num_klvs,
struct xe_guc_buf buf, u32 num_dwords)
{
int ret;
xe_gt_assert(gt, num_klvs == xe_guc_klv_count(klvs, num_dwords));
ret = pf_send_policy_klvs(gt, klvs, num_dwords);
ret = pf_send_policy_klvs(gt, buf, num_dwords);
if (ret != num_klvs) {
int err = ret < 0 ? ret : ret < num_klvs ? -ENOKEY : -EPROTO;
struct drm_printer p = xe_gt_info_printer(gt);
void *klvs = xe_guc_buf_cpu_ptr(buf);
xe_gt_sriov_notice(gt, "Failed to push %u policy KLV%s (%pe)\n",
num_klvs, str_plural(num_klvs), ERR_PTR(err));
@ -86,6 +67,23 @@ static int pf_push_policy_klvs(struct xe_gt *gt, u32 num_klvs,
return 0;
}
/*
* Return: 0 on success, -ENOBUFS if there is no free buffer for the indirect data,
* negative error code on failure.
*/
static int pf_push_policy_klvs(struct xe_gt *gt, u32 num_klvs,
const u32 *klvs, u32 num_dwords)
{
CLASS(xe_guc_buf_from_data, buf)(&gt->uc.guc.buf, klvs, num_dwords * sizeof(u32));
xe_gt_assert(gt, num_klvs == xe_guc_klv_count(klvs, num_dwords));
if (!xe_guc_buf_is_valid(buf))
return -ENOBUFS;
return pf_push_policy_buf_klvs(gt, num_klvs, buf, num_dwords);
}
static int pf_push_policy_u32(struct xe_gt *gt, u16 key, u32 value)
{
u32 klv[] = {