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drm/i915/skl: Add the additional graphics stolen sizes

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Skylake introduces new stolen memory sizes starting at 0xf0 (4MB) and
growing by 4MB increments from there.

v2: Rebase on top of the early-quirk changes from Ville.

v3: Rebase on top of the PCI_IDS/IDS macro rename

Reviewed-by: Thomas Wood <thomas.wood@intel.com>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Damien Lespiau 2014-01-09 18:02:46 +00:00 committed by Daniel Vetter
parent 1b1aad754c
commit 663750141e
2 changed files with 39 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

23
arch/x86/kernel/early-quirks.c
View file

@ -455,6 +455,23 @@ struct intel_stolen_funcs {
u32 (*base)(int num, int slot, int func, size_t size);
};
static size_t __init gen9_stolen_size(int num, int slot, int func)
{
u16 gmch_ctrl;
gmch_ctrl = read_pci_config_16(num, slot, func, SNB_GMCH_CTRL);
gmch_ctrl >>= BDW_GMCH_GMS_SHIFT;
gmch_ctrl &= BDW_GMCH_GMS_MASK;
if (gmch_ctrl < 0xf0)
return gmch_ctrl << 25; /* 32 MB units */
else
/* 4MB increments starting at 0xf0 for 4MB */
return (gmch_ctrl - 0xf0 + 1) << 22;
}
typedef size_t (*stolen_size_fn)(int num, int slot, int func);
static const struct intel_stolen_funcs i830_stolen_funcs __initconst = {
.base = i830_stolen_base,
.size = i830_stolen_size,
@ -490,6 +507,11 @@ static const struct intel_stolen_funcs gen8_stolen_funcs __initconst = {
.size = gen8_stolen_size,
};
static const struct intel_stolen_funcs gen9_stolen_funcs __initconst = {
.base = intel_stolen_base,
.size = gen9_stolen_size,
};
static const struct intel_stolen_funcs chv_stolen_funcs __initconst = {
.base = intel_stolen_base,
.size = chv_stolen_size,
@ -523,6 +545,7 @@ static const struct pci_device_id intel_stolen_ids[] __initconst = {
INTEL_BDW_M_IDS(&gen8_stolen_funcs),
INTEL_BDW_D_IDS(&gen8_stolen_funcs),
INTEL_CHV_IDS(&chv_stolen_funcs),
INTEL_SKL_IDS(&gen9_stolen_funcs),
};
static void __init intel_graphics_stolen(int num, int slot, int func)

17
drivers/gpu/drm/i915/i915_gem_gtt.c
View file

@ -1847,6 +1847,18 @@ static size_t chv_get_stolen_size(u16 gmch_ctrl)
return (gmch_ctrl - 0x17 + 9) << 22;
}
static size_t gen9_get_stolen_size(u16 gen9_gmch_ctl)
{
gen9_gmch_ctl >>= BDW_GMCH_GMS_SHIFT;
gen9_gmch_ctl &= BDW_GMCH_GMS_MASK;
if (gen9_gmch_ctl < 0xf0)
return gen9_gmch_ctl << 25; /* 32 MB units */
else
/* 4MB increments starting at 0xf0 for 4MB */
return (gen9_gmch_ctl - 0xf0 + 1) << 22;
}
static int ggtt_probe_common(struct drm_device *dev,
size_t gtt_size)
{
@ -1943,7 +1955,10 @@ static int gen8_gmch_probe(struct drm_device *dev,
pci_read_config_word(dev->pdev, SNB_GMCH_CTRL, &snb_gmch_ctl);
if (IS_CHERRYVIEW(dev)) {
if (INTEL_INFO(dev)->gen >= 9) {
*stolen = gen9_get_stolen_size(snb_gmch_ctl);
gtt_size = gen8_get_total_gtt_size(snb_gmch_ctl);
} else if (IS_CHERRYVIEW(dev)) {
*stolen = chv_get_stolen_size(snb_gmch_ctl);
gtt_size = chv_get_total_gtt_size(snb_gmch_ctl);
} else {