[Intel-gfx] [RFC 10/60] drm/i915/dg1: Increase mmio size to 4MB

[Matthew Auld]

From: Venkata Sandeep Dhanalakota <venkata.s.dhanalakota at intel.com>

On dgfx register range has been extended to go up to 4MB.

Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
Cc: Michael J. Ruhl <michael.j.ruhl at intel.com>
Signed-off-by: Venkata Sandeep Dhanalakota <venkata.s.dhanalakota at intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
---
 drivers/gpu/drm/i915/intel_uncore.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
index f5edee17902a..8f9c82aa7338 100644
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -1701,11 +1701,15 @@ static int uncore_mmio_setup(struct intel_uncore *uncore)
 	 * clobbering the GTT which we want ioremap_wc instead. Fortunately,
 	 * the register BAR remains the same size for all the earlier
 	 * generations up to Ironlake.
+	 * For dgfx chips register range is expanded to 4MB.
 	 */
 	if (INTEL_GEN(i915) < 5)
 		mmio_size = 512 * 1024;
+	else if (IS_DGFX(i915))
+		mmio_size = 4 * 1024 * 1024;
 	else
 		mmio_size = 2 * 1024 * 1024;
+
 	uncore->regs = pci_iomap(pdev, mmio_bar, mmio_size);
 	if (uncore->regs == NULL) {
 		drm_err(&i915->drm, "failed to map registers\n");
-- 
2.26.2