Commit a43d5060 authored by Michal Wajdeczko's avatar Michal Wajdeczko
Browse files

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: default avatarMichal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: default avatarMatt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240213154355.1221-2-michal.wajdeczko@intel.com
parent 157261c5

drivers/gpu/drm/xe/xe_ggtt.c

+6 −1
Original line number Diff line number Diff line
@@ -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;



	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;