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Date: Mon, 11 Dec 2017 15:18:15 +0000 From: Matthew Auld <matthew.auld@...el.com> To: intel-gfx@...ts.freedesktop.org Cc: Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>, Ville Syrjälä <ville.syrjala@...ux.intel.com>, Chris Wilson <chris@...is-wilson.co.uk>, Paulo Zanoni <paulo.r.zanoni@...el.com>, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...nel.org>, "H . Peter Anvin" <hpa@...or.com>, x86@...nel.org, linux-kernel@...r.kernel.org Subject: [PATCH v8 2/9] x86/early-quirks: export the stolen region as a resource We duplicate the stolen discovery code in early-quirks and in i915, however if we just export the region as a resource from early-quirks we can nuke the duplication. Signed-off-by: Matthew Auld <matthew.auld@...el.com> Cc: Joonas Lahtinen <joonas.lahtinen@...ux.intel.com> Cc: Ville Syrjälä <ville.syrjala@...ux.intel.com> Cc: Chris Wilson <chris@...is-wilson.co.uk> Cc: Paulo Zanoni <paulo.r.zanoni@...el.com> Cc: Thomas Gleixner <tglx@...utronix.de> Cc: Ingo Molnar <mingo@...nel.org> Cc: H. Peter Anvin <hpa@...or.com> Cc: x86@...nel.org Cc: linux-kernel@...r.kernel.org --- arch/x86/kernel/early-quirks.c | 11 +++++++++-- include/drm/i915_drm.h | 3 +++ 2 files changed, 12 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c index a18de5fb9e68..6c1624889011 100644 --- a/arch/x86/kernel/early-quirks.c +++ b/arch/x86/kernel/early-quirks.c @@ -532,6 +532,9 @@ static const struct pci_device_id intel_early_ids[] __initconst = { INTEL_CNL_IDS(&gen9_early_ops), }; +struct resource intel_graphics_stolen_res __ro_after_init = DEFINE_RES_MEM(0, 0); +EXPORT_SYMBOL(intel_graphics_stolen_res); + static void __init intel_graphics_stolen(int num, int slot, int func, const struct intel_early_ops *early_ops) @@ -546,8 +549,12 @@ intel_graphics_stolen(int num, int slot, int func, return; end = base + size - 1; - printk(KERN_INFO "Reserving Intel graphics memory at %pa-%pa\n", - &base, &end); + + intel_graphics_stolen_res.start = base; + intel_graphics_stolen_res.end = end; + + printk(KERN_INFO "Reserving Intel graphics memory at %pR\n", + &intel_graphics_stolen_res); /* Mark this space as reserved */ e820__range_add(base, size, E820_TYPE_RESERVED); diff --git a/include/drm/i915_drm.h b/include/drm/i915_drm.h index 4e1b274e1164..c9e5a6621b95 100644 --- a/include/drm/i915_drm.h +++ b/include/drm/i915_drm.h @@ -36,6 +36,9 @@ extern bool i915_gpu_lower(void); extern bool i915_gpu_busy(void); extern bool i915_gpu_turbo_disable(void); +/* Exported from arch/x86/kernel/early-quirks.c */ +extern struct resource intel_graphics_stolen_res; + /* * The Bridge device's PCI config space has information about the * fb aperture size and the amount of pre-reserved memory. -- 2.14.3
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