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drm/i915/gt: Use pci_rebar_size_supported()

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PCI core provides pci_rebar_size_supported() that helps in checking if an
encoded BAR Size is supported for the BAR or not. Use it in
i915_resize_lmem_bar() to simplify code.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patch.msgid.link/20251113180053.27944-7-ilpo.jarvinen@linux.intel.com
This commit is contained in:
Ilpo Järvinen
2025-11-13 20:00:48 +02:00
committed by Bjorn Helgaas
parent bb1fabd0d9
commit c59038d3c0
1 changed files with 3 additions and 7 deletions
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10
drivers/gpu/drm/i915/gt/intel_region_lmem.c
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@@ -49,16 +49,12 @@ static void i915_resize_lmem_bar(struct drm_i915_private *i915, resource_size_t
current_size = roundup_pow_of_two(pci_resource_len(pdev, GEN12_LMEM_BAR));
if (i915->params.lmem_bar_size) {
u32 bar_sizes;
rebar_size = i915->params.lmem_bar_size *
(resource_size_t)SZ_1M;
bar_sizes = pci_rebar_get_possible_sizes(pdev, GEN12_LMEM_BAR);
rebar_size = i915->params.lmem_bar_size * (resource_size_t)SZ_1M;
if (rebar_size == current_size)
return;
if (!(bar_sizes & BIT(pci_rebar_bytes_to_size(rebar_size))) ||
if (!pci_rebar_size_supported(pdev, GEN12_LMEM_BAR,
pci_rebar_bytes_to_size(rebar_size)) ||
rebar_size >= roundup_pow_of_two(lmem_size)) {
rebar_size = lmem_size;