Commit 023f8079 authored Jul 19, 2017 by Daniel Vetter

drm/i915: More stolen quirking

I've found a bios with an off-by-one at the other end. There's a pnp
reservation for 0xc5400000-0xc7fffffe and we want stolen in 0xc6000000
through 0xc8000000.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99872
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98683


Cc: Martin Peres <martin.peres@linux.intel.com>
Reviewed-by: Martin Peres <martin.peres@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170719100043.30851-1-daniel.vetter@ffwll.ch

parent 54d20ed1

drivers/gpu/drm/i915/i915_gem_stolen.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -254,9 +254,10 @@ static dma_addr_t i915_stolen_to_dma(struct drm_i915_private *dev_priv)
		* This is a BIOS w/a: Some BIOS wrap stolen in the root
		* PCI bus, but have an off-by-one error. Hence retry the
		* reservation starting from 1 instead of 0.
		* There's also BIOS with off-by-one on the other end.
		*/
		r = devm_request_mem_region(dev_priv->drm.dev, base + 1,
		ggtt->stolen_size - 1,
		ggtt->stolen_size - 2,
		"Graphics Stolen Memory");
		/*
		* GEN3 firmware likes to smash pci bridges into the stolen