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drm/xe/vf: Don't check if LMEM is initialized if VF

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It is PF driver responsibility to verify that LMEM was correctly
initialized, also VF drivers don't have access to GU_CNTL register.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240213154355.1221-6-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko
2024-02-13 16:43:52 +01:00
parent 60da62fbe9
commit 3ed34c6552
1 changed files with 8 additions and 1 deletions
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9
drivers/gpu/drm/xe/xe_mmio.c
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@@ -20,6 +20,7 @@
#include "xe_gt_mcr.h"
#include "xe_macros.h"
#include "xe_module.h"
#include "xe_sriov.h"
#include "xe_tile.h"
#define XEHP_MTCFG_ADDR XE_REG(0x101800)
@@ -363,13 +364,19 @@ static int xe_verify_lmem_ready(struct xe_device *xe)
{
struct xe_gt *gt = xe_root_mmio_gt(xe);
if (!IS_DGFX(xe))
return 0;
if (IS_SRIOV_VF(xe))
return 0;
/*
* The boot firmware initializes local memory and assesses its health.
* If memory training fails, the punit will have been instructed to
* keep the GT powered down; we won't be able to communicate with it
* and we should not continue with driver initialization.
*/
if (IS_DGFX(xe) && !(xe_mmio_read32(gt, GU_CNTL) & LMEM_INIT)) {
if (!(xe_mmio_read32(gt, GU_CNTL) & LMEM_INIT)) {
drm_err(&xe->drm, "VRAM not initialized by firmware\n");
return -ENODEV;
}