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drm/xe/vf: Assume fixed GSM size if VF 

VFs can't use size mirrored from PCI config, but it should be
safe to assume it covers full 4GiB GGTT.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240213154355.1221-2-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko 2024-02-13 16:43:48 +01:00
parent 157261c58b
commit a43d506008
1 changed files with 6 additions and 1 deletions
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7
drivers/gpu/drm/xe/xe_ggtt.c
View File

@ -20,6 +20,7 @@
#include "xe_gt_tlb_invalidation.h"
#include "xe_map.h"
#include "xe_mmio.h"
#include "xe_sriov.h"
#include "xe_wopcm.h"
#define XELPG_GGTT_PTE_PAT0 BIT_ULL(52)
@ -144,7 +145,11 @@ int xe_ggtt_init_early(struct xe_ggtt *ggtt)
struct pci_dev *pdev = to_pci_dev(xe->drm.dev);
unsigned int gsm_size;
gsm_size = probe_gsm_size(pdev);
if (IS_SRIOV_VF(xe))
gsm_size = SZ_8M; /* GGTT is expected to be 4GiB */
else
gsm_size = probe_gsm_size(pdev);
if (gsm_size == 0) {
drm_err(&xe->drm, "Hardware reported no preallocated GSM\n");
return -ENOMEM;