Commit 023f8079 authored by Daniel Vetter's avatar 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: default avatarMartin Peres <martin.peres@linux.intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170719100043.30851-1-daniel.vetter@ffwll.ch
parent 54d20ed1
...@@ -254,9 +254,10 @@ static dma_addr_t i915_stolen_to_dma(struct drm_i915_private *dev_priv) ...@@ -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 * 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 * PCI bus, but have an off-by-one error. Hence retry the
* reservation starting from 1 instead of 0. * 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, r = devm_request_mem_region(dev_priv->drm.dev, base + 1,
ggtt->stolen_size - 1, ggtt->stolen_size - 2,
"Graphics Stolen Memory"); "Graphics Stolen Memory");
/* /*
* GEN3 firmware likes to smash pci bridges into the stolen * GEN3 firmware likes to smash pci bridges into the stolen
......
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