diff options
| author | Tvrtko Ursulin | 2016-05-10 11:57:08 +0200 |
|---|---|---|
| committer | Tvrtko Ursulin | 2016-05-11 13:27:28 +0200 |
| commit | ac657f6461e5f7e0e8cb308b46b63ba71a6f6906 (patch) | |
| tree | cfaf02e4f7b881ab1abef91b5c44804b59401884 /drivers/gpu/drm/i915/i915_drv.h | |
| parent | drm/i915: Do not use a bitfield for INTEL_INFO->num_pipes (diff) | |
| download | kernel-qcow2-linux-ac657f6461e5f7e0e8cb308b46b63ba71a6f6906.tar.gz kernel-qcow2-linux-ac657f6461e5f7e0e8cb308b46b63ba71a6f6906.tar.xz kernel-qcow2-linux-ac657f6461e5f7e0e8cb308b46b63ba71a6f6906.zip | |
drm/i915: Introduce IS_GEN macro
To be used for more efficient Gen range checking.
v2: Remove spurious chunk. (Chris Wilson)
v3: Rebase.
v4: Renamed from INTEL_GEN_RANGE and added GEN_FOREVER.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> (v3)
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Dave Gordon <david.s.gordon@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1462874228-6601-1-git-send-email-tvrtko.ursulin@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 43d788438cc3..7a0b51301337 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2519,9 +2519,29 @@ struct drm_i915_cmd_table { #define INTEL_INFO(p) (&__I915__(p)->info) #define INTEL_GEN(p) (INTEL_INFO(p)->gen) #define INTEL_DEVID(p) (INTEL_INFO(p)->device_id) -#define INTEL_REVID(p) (__I915__(p)->dev->pdev->revision) #define REVID_FOREVER 0xff +#define INTEL_REVID(p) (__I915__(p)->dev->pdev->revision) + +#define GEN_FOREVER (0) +/* + * Returns true if Gen is in inclusive range [Start, End]. + * + * Use GEN_FOREVER for unbound start and or end. + */ +#define IS_GEN(p, s, e) ({ \ + unsigned int __s = (s), __e = (e); \ + BUILD_BUG_ON(!__builtin_constant_p(s)); \ + BUILD_BUG_ON(!__builtin_constant_p(e)); \ + if ((__s) != GEN_FOREVER) \ + __s = (s) - 1; \ + if ((__e) == GEN_FOREVER) \ + __e = BITS_PER_LONG - 1; \ + else \ + __e = (e) - 1; \ + !!(INTEL_INFO(p)->gen_mask & GENMASK((__e), (__s))); \ +}) + /* * Return true if revision is in range [since,until] inclusive. * |