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drm/i915: make reserved struct resource centric

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Now that we are using struct resource to track the stolen region, it is
more convenient if we track the reserved portion of that region in a
resource as well.

v2: s/<= end + 1/< end/ (Chris)
v3: prefer DEFINE_RES_MEM

Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171211151822.20953-7-matthew.auld@intel.com
This commit is contained in:
Matthew Auld 2017-12-11 15:18:19 +00:00 committed by Joonas Lahtinen
parent 7789422665
commit 17a053454b
4 changed files with 12 additions and 14 deletions
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4
drivers/gpu/drm/i915/i915_drv.h
View File

@ -2259,6 +2259,10 @@ struct drm_i915_private {
* some portion of it is in fact reserved for use by hardware functions.
*/
struct resource dsm;
/**
* Reseved portion of Data Stolen Memory
*/
struct resource dsm_reserved;
void __iomem *regs;

2
drivers/gpu/drm/i915/i915_gem_gtt.h
View File

@ -382,8 +382,6 @@ struct i915_ggtt {
* hardware functions and similarly removed from the accessible range.
*/
u32 stolen_usable_size; /* Total size minus reserved ranges */
u32 stolen_reserved_base;
u32 stolen_reserved_size;
/** "Graphics Stolen Memory" holds the global PTEs */
void __iomem *gsm;

14
drivers/gpu/drm/i915/i915_gem_stolen.c
View File

@ -394,17 +394,15 @@ int i915_gem_init_stolen(struct drm_i915_private *dev_priv)
reserved_base = stolen_top;
}
if (reserved_base < dev_priv->dsm.start ||
reserved_base + reserved_size > stolen_top) {
dma_addr_t reserved_top = reserved_base + reserved_size;
DRM_ERROR("Stolen reserved area [%pad - %pad] outside stolen memory %pR\n",
&reserved_base, &reserved_top, &dev_priv->dsm);
dev_priv->dsm_reserved =
(struct resource) DEFINE_RES_MEM(reserved_base, reserved_size);
if (!resource_contains(&dev_priv->dsm, &dev_priv->dsm_reserved)) {
DRM_ERROR("Stolen reserved area %pR outside stolen memory %pR\n",
&dev_priv->dsm_reserved, &dev_priv->dsm);
return 0;
}
ggtt->stolen_reserved_base = reserved_base;
ggtt->stolen_reserved_size = reserved_size;
/* It is possible for the reserved area to end before the end of stolen
* memory, so just consider the start. */
reserved_total = stolen_top - reserved_base;

6
drivers/gpu/drm/i915/intel_pm.c
View File

@ -6416,7 +6416,6 @@ static void valleyview_disable_rps(struct drm_i915_private *dev_priv)
static bool bxt_check_bios_rc6_setup(struct drm_i915_private *dev_priv)
{
struct i915_ggtt *ggtt = &dev_priv->ggtt;
bool enable_rc6 = true;
unsigned long rc6_ctx_base;
u32 rc_ctl;
@ -6441,9 +6440,8 @@ static bool bxt_check_bios_rc6_setup(struct drm_i915_private *dev_priv)
* for this check.
*/
rc6_ctx_base = I915_READ(RC6_CTX_BASE) & RC6_CTX_BASE_MASK;
if (!((rc6_ctx_base >= ggtt->stolen_reserved_base) &&
(rc6_ctx_base + PAGE_SIZE <= ggtt->stolen_reserved_base +
ggtt->stolen_reserved_size))) {
if (!((rc6_ctx_base >= dev_priv->dsm_reserved.start) &&
(rc6_ctx_base + PAGE_SIZE < dev_priv->dsm_reserved.end))) {
DRM_DEBUG_DRIVER("RC6 Base address not as expected.\n");
enable_rc6 = false;
}