diff --git a/drivers/gpu/drm/i915/display/intel_lpe_audio.c b/drivers/gpu/drm/i915/display/intel_lpe_audio.c
index 4970bf146c4a..1e18696aaecf 100644
--- a/drivers/gpu/drm/i915/display/intel_lpe_audio.c
+++ b/drivers/gpu/drm/i915/display/intel_lpe_audio.c
@@ -73,6 +73,7 @@
 #include "i915_drv.h"
 #include "intel_de.h"
 #include "intel_lpe_audio.h"
+#include "intel_pci_config.h"
 
 #define HAS_LPE_AUDIO(dev_priv) ((dev_priv)->audio.lpe.platdev != NULL)
 
@@ -100,9 +101,9 @@ lpe_audio_platdev_create(struct drm_i915_private *dev_priv)
 	rsc[0].flags    = IORESOURCE_IRQ;
 	rsc[0].name     = "hdmi-lpe-audio-irq";
 
-	rsc[1].start    = pci_resource_start(pdev, 0) +
+	rsc[1].start    = pci_resource_start(pdev, GTTMMADR_BAR) +
 		I915_HDMI_LPE_AUDIO_BASE;
-	rsc[1].end      = pci_resource_start(pdev, 0) +
+	rsc[1].end      = pci_resource_start(pdev, GTTMMADR_BAR) +
 		I915_HDMI_LPE_AUDIO_BASE + I915_HDMI_LPE_AUDIO_SIZE - 1;
 	rsc[1].flags    = IORESOURCE_MEM;
 	rsc[1].name     = "hdmi-lpe-audio-mmio";
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
index 166d0a4b9e8c..c369cfd185bc 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
@@ -22,6 +22,7 @@
 #include "i915_utils.h"
 #include "i915_vgpu.h"
 #include "intel_mchbar_regs.h"
+#include "intel_pci_config.h"
 
 /*
  * The BIOS typically reserves some of the system's memory for the exclusive
@@ -830,7 +831,7 @@ i915_gem_stolen_lmem_setup(struct drm_i915_private *i915, u16 type,
 	/* Use DSM base address instead for stolen memory */
 	dsm_base = intel_uncore_read64(uncore, GEN12_DSMBASE);
 	if (IS_DG1(uncore->i915)) {
-		lmem_size = pci_resource_len(pdev, 2);
+		lmem_size = pci_resource_len(pdev, GEN12_LMEM_BAR);
 		if (WARN_ON(lmem_size < dsm_base))
 			return ERR_PTR(-ENODEV);
 	} else {
@@ -842,11 +843,11 @@ i915_gem_stolen_lmem_setup(struct drm_i915_private *i915, u16 type,
 	}
 
 	dsm_size = lmem_size - dsm_base;
-	if (pci_resource_len(pdev, 2) < lmem_size) {
+	if (pci_resource_len(pdev, GEN12_LMEM_BAR) < lmem_size) {
 		io_start = 0;
 		io_size = 0;
 	} else {
-		io_start = pci_resource_start(pdev, 2) + dsm_base;
+		io_start = pci_resource_start(pdev, GEN12_LMEM_BAR) + dsm_base;
 		io_size = dsm_size;
 	}
 
diff --git a/drivers/gpu/drm/i915/gt/intel_ggtt.c b/drivers/gpu/drm/i915/gt/intel_ggtt.c
index 15a915bb4088..8214e07a0f5b 100644
--- a/drivers/gpu/drm/i915/gt/intel_ggtt.c
+++ b/drivers/gpu/drm/i915/gt/intel_ggtt.c
@@ -16,6 +16,7 @@
 #include "intel_ggtt_gmch.h"
 #include "intel_gt.h"
 #include "intel_gt_regs.h"
+#include "intel_pci_config.h"
 #include "i915_drv.h"
 #include "i915_scatterlist.h"
 #include "i915_utils.h"
@@ -869,8 +870,8 @@ static int ggtt_probe_common(struct i915_ggtt *ggtt, u64 size)
 	u32 pte_flags;
 	int ret;
 
-	GEM_WARN_ON(pci_resource_len(pdev, 0) != gen6_gttmmadr_size(i915));
-	phys_addr = pci_resource_start(pdev, 0) + gen6_gttadr_offset(i915);
+	GEM_WARN_ON(pci_resource_len(pdev, GTTMMADR_BAR) != gen6_gttmmadr_size(i915));
+	phys_addr = pci_resource_start(pdev, GTTMMADR_BAR) + gen6_gttadr_offset(i915);
 
 	/*
 	 * On BXT+/ICL+ writes larger than 64 bit to the GTT pagetable range
@@ -930,7 +931,7 @@ static int gen8_gmch_probe(struct i915_ggtt *ggtt)
 	u16 snb_gmch_ctl;
 
 	if (!HAS_LMEM(i915)) {
-		ggtt->gmadr = pci_resource(pdev, 2);
+		ggtt->gmadr = pci_resource(pdev, GTT_APERTURE_BAR);
 		ggtt->mappable_end = resource_size(&ggtt->gmadr);
 	}
 
@@ -1084,7 +1085,7 @@ static int gen6_gmch_probe(struct i915_ggtt *ggtt)
 	unsigned int size;
 	u16 snb_gmch_ctl;
 
-	ggtt->gmadr = pci_resource(pdev, 2);
+	ggtt->gmadr = pci_resource(pdev, GTT_APERTURE_BAR);
 	ggtt->mappable_end = resource_size(&ggtt->gmadr);
 
 	/*
diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c
index f435e06125aa..e4bac2431e41 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt.c
@@ -26,6 +26,7 @@
 #include "intel_gt_requests.h"
 #include "intel_migrate.h"
 #include "intel_mocs.h"
+#include "intel_pci_config.h"
 #include "intel_pm.h"
 #include "intel_rc6.h"
 #include "intel_renderstate.h"
@@ -830,7 +831,7 @@ int intel_gt_probe_all(struct drm_i915_private *i915)
 	unsigned int mmio_bar;
 	int ret;
 
-	mmio_bar = GRAPHICS_VER(i915) == 2 ? 1 : 0;
+	mmio_bar = GRAPHICS_VER(i915) == 2 ? GEN2_GTTMMADR_BAR : GTTMMADR_BAR;
 	phys_addr = pci_resource_start(pdev, mmio_bar);
 
 	/*
diff --git a/drivers/gpu/drm/i915/gt/intel_region_lmem.c b/drivers/gpu/drm/i915/gt/intel_region_lmem.c
index aa6aed837194..1e79d3c8b126 100644
--- a/drivers/gpu/drm/i915/gt/intel_region_lmem.c
+++ b/drivers/gpu/drm/i915/gt/intel_region_lmem.c
@@ -6,6 +6,7 @@
 #include "i915_drv.h"
 #include "i915_reg.h"
 #include "intel_memory_region.h"
+#include "intel_pci_config.h"
 #include "intel_region_lmem.h"
 #include "intel_region_ttm.h"
 #include "gem/i915_gem_lmem.h"
@@ -45,7 +46,6 @@ _resize_bar(struct drm_i915_private *i915, int resno, resource_size_t size)
 	drm_info(&i915->drm, "BAR%d resized to %dM\n", resno, 1 << bar_size);
 }
 
-#define LMEM_BAR_NUM 2
 static void i915_resize_lmem_bar(struct drm_i915_private *i915, resource_size_t lmem_size)
 {
 	struct pci_dev *pdev = to_pci_dev(i915->drm.dev);
@@ -56,15 +56,14 @@ static void i915_resize_lmem_bar(struct drm_i915_private *i915, resource_size_t
 	u32 pci_cmd;
 	int i;
 
-	current_size = roundup_pow_of_two(pci_resource_len(pdev, LMEM_BAR_NUM));
+	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,
-							 LMEM_BAR_NUM);
+		bar_sizes = pci_rebar_get_possible_sizes(pdev, GEN12_LMEM_BAR);
 
 		if (rebar_size == current_size)
 			return;
@@ -107,7 +106,7 @@ static void i915_resize_lmem_bar(struct drm_i915_private *i915, resource_size_t
 	pci_write_config_dword(pdev, PCI_COMMAND,
 			       pci_cmd & ~PCI_COMMAND_MEMORY);
 
-	_resize_bar(i915, LMEM_BAR_NUM, rebar_size);
+	_resize_bar(i915, GEN12_LMEM_BAR, rebar_size);
 
 	pci_assign_unassigned_bus_resources(pdev->bus);
 	pci_write_config_dword(pdev, PCI_COMMAND, pci_cmd);
@@ -236,8 +235,8 @@ static struct intel_memory_region *setup_lmem(struct intel_gt *gt)
 				  mul_u32_u32(i915->params.lmem_size, SZ_1M));
 	}
 
-	io_start = pci_resource_start(pdev, 2);
-	io_size = min(pci_resource_len(pdev, 2), lmem_size);
+	io_start = pci_resource_start(pdev, GEN12_LMEM_BAR);
+	io_size = min(pci_resource_len(pdev, GEN12_LMEM_BAR), lmem_size);
 	if (!io_size)
 		return ERR_PTR(-EIO);
 
diff --git a/drivers/gpu/drm/i915/gvt/cfg_space.c b/drivers/gpu/drm/i915/gvt/cfg_space.c
index dad3a6054335..eef3bba8a41b 100644
--- a/drivers/gpu/drm/i915/gvt/cfg_space.c
+++ b/drivers/gpu/drm/i915/gvt/cfg_space.c
@@ -33,6 +33,7 @@
 
 #include "i915_drv.h"
 #include "gvt.h"
+#include "intel_pci_config.h"
 
 enum {
 	INTEL_GVT_PCI_BAR_GTTMMIO = 0,
@@ -353,9 +354,9 @@ void intel_vgpu_init_cfg_space(struct intel_vgpu *vgpu,
 	memset(vgpu_cfg_space(vgpu) + INTEL_GVT_PCI_OPREGION, 0, 4);
 
 	vgpu->cfg_space.bar[INTEL_GVT_PCI_BAR_GTTMMIO].size =
-		pci_resource_len(pdev, 0);
+		pci_resource_len(pdev, GTTMMADR_BAR);
 	vgpu->cfg_space.bar[INTEL_GVT_PCI_BAR_APERTURE].size =
-		pci_resource_len(pdev, 2);
+		pci_resource_len(pdev, GTT_APERTURE_BAR);
 
 	memset(vgpu_cfg_space(vgpu) + PCI_ROM_ADDRESS, 0, 4);
 
diff --git a/drivers/gpu/drm/i915/intel_pci_config.h b/drivers/gpu/drm/i915/intel_pci_config.h
index 12cd9d4f23de..4977a524ce6f 100644
--- a/drivers/gpu/drm/i915/intel_pci_config.h
+++ b/drivers/gpu/drm/i915/intel_pci_config.h
@@ -6,6 +6,13 @@
 #ifndef __INTEL_PCI_CONFIG_H__
 #define __INTEL_PCI_CONFIG_H__
 
+/* PCI BARs */
+#define GTTMMADR_BAR				0
+#define GEN2_GTTMMADR_BAR			1
+#define GFXMEM_BAR				2
+#define GTT_APERTURE_BAR			GFXMEM_BAR
+#define GEN12_LMEM_BAR				GFXMEM_BAR
+
 /* BSM in include/drm/i915_drm.h */
 
 #define MCHBAR_I915				0x44
