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drm/xe/vram: Use pci_rebar_get_max_size()

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Use pci_rebar_get_max_size() from PCI core in resize_vram_bar() to simplify
code.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patch.msgid.link/20251113180053.27944-10-ilpo.jarvinen@linux.intel.com
This commit is contained in:
Ilpo Järvinen 2025-11-13 20:00:51 +02:00 committed by Bjorn Helgaas
parent 1c680f2acd
commit 46ba95bed9
1 changed files with 7 additions and 8 deletions
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15
drivers/gpu/drm/xe/xe_vram.c
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@ -53,16 +53,11 @@ static void resize_vram_bar(struct xe_device *xe)
resource_size_t current_size;
resource_size_t rebar_size;
struct resource *root_res;
u32 bar_size_mask;
int max_size, i;
u32 pci_cmd;
int i;
/* gather some relevant info */
current_size = pci_resource_len(pdev, LMEM_BAR);
bar_size_mask = pci_rebar_get_possible_sizes(pdev, LMEM_BAR);
if (!bar_size_mask)
return;
if (force_vram_bar_size < 0)
return;
@ -76,7 +71,8 @@ static void resize_vram_bar(struct xe_device *xe)
drm_info(&xe->drm,
"Requested size: %lluMiB is not supported by rebar sizes: 0x%x. Leaving default: %lluMiB\n",
(u64)pci_rebar_size_to_bytes(rebar_size) >> 20,
bar_size_mask, (u64)current_size >> 20);
pci_rebar_get_possible_sizes(pdev, LMEM_BAR),
(u64)current_size >> 20);
return;
}
@ -84,7 +80,10 @@ static void resize_vram_bar(struct xe_device *xe)
if (rebar_size == current_size)
return;
} else {
rebar_size = pci_rebar_size_to_bytes(__fls(bar_size_mask));
max_size = pci_rebar_get_max_size(pdev, LMEM_BAR);
if (max_size < 0)
return;
rebar_size = pci_rebar_size_to_bytes(max_size);
/* only resize if larger than current */
if (rebar_size <= current_size)