GEN12_LMEM_BAR
if (!i915_pci_resource_valid(pdev, GEN12_LMEM_BAR))
lmem_size = pci_resource_len(pdev, GEN12_LMEM_BAR);
GEM_BUG_ON(pci_resource_len(pdev, GEN12_LMEM_BAR) != SZ_256M);
} else if (pci_resource_len(pdev, GEN12_LMEM_BAR) < lmem_size) {
io_start = pci_resource_start(pdev, GEN12_LMEM_BAR) + dsm_base;
_resize_bar(i915, GEN12_LMEM_BAR, rebar_size);
if (!i915_pci_resource_valid(pdev, GEN12_LMEM_BAR))
io_start = pci_resource_start(pdev, GEN12_LMEM_BAR);
io_size = min(pci_resource_len(pdev, GEN12_LMEM_BAR), lmem_size);
current_size = roundup_pow_of_two(pci_resource_len(pdev, GEN12_LMEM_BAR));
if (!pci_rebar_size_supported(pdev, GEN12_LMEM_BAR,