drm/i915: Cleanup i915_param()

Rather than having a separate case for each value where we just return
a hardcoded value = 1, we lump them all together and rely on the awesome
case-fallthrough feature of C.

Fix all feature macros to pass dev_priv instead of dev while at it,
and use INTEL_GEN() instead of INTEL_INFO()->gen.

Signed-off-by: David Weinehall <david.weinehall@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20160902104617.29089-1-david.weinehall@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 47fe07283d88c3c1b767a06174f7e5935507e4b2..24543079af9541b470e06171c2868bf41e6adf06 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -248,22 +248,12 @@ static int i915_getparam(struct drm_device *dev, void *data,
        case I915_PARAM_REVISION:
                value = pdev->revision;
                break;
-       case I915_PARAM_HAS_GEM:
-               value = 1;
-               break;
        case I915_PARAM_NUM_FENCES_AVAIL:
                value = dev_priv->num_fence_regs;
                break;
        case I915_PARAM_HAS_OVERLAY:
                value = dev_priv->overlay ? 1 : 0;
                break;
-       case I915_PARAM_HAS_PAGEFLIPPING:
-               value = 1;
-               break;
-       case I915_PARAM_HAS_EXECBUF2:
-               /* depends on GEM */
-               value = 1;
-               break;
        case I915_PARAM_HAS_BSD:
                value = intel_engine_initialized(&dev_priv->engine[VCS]);
                break;
@@ -276,67 +266,34 @@ static int i915_getparam(struct drm_device *dev, void *data,
        case I915_PARAM_HAS_BSD2:
                value = intel_engine_initialized(&dev_priv->engine[VCS2]);
                break;
-       case I915_PARAM_HAS_RELAXED_FENCING:
-               value = 1;
-               break;
-       case I915_PARAM_HAS_COHERENT_RINGS:
-               value = 1;
-               break;
        case I915_PARAM_HAS_EXEC_CONSTANTS:
-               value = INTEL_INFO(dev)->gen >= 4;
-               break;
-       case I915_PARAM_HAS_RELAXED_DELTA:
-               value = 1;
-               break;
-       case I915_PARAM_HAS_GEN7_SOL_RESET:
-               value = 1;
+               value = INTEL_GEN(dev_priv) >= 4;
                break;
        case I915_PARAM_HAS_LLC:
-               value = HAS_LLC(dev);
+               value = HAS_LLC(dev_priv);
                break;
        case I915_PARAM_HAS_WT:
-               value = HAS_WT(dev);
+               value = HAS_WT(dev_priv);
                break;
        case I915_PARAM_HAS_ALIASING_PPGTT:
-               value = USES_PPGTT(dev);
-               break;
-       case I915_PARAM_HAS_WAIT_TIMEOUT:
-               value = 1;
+               value = USES_PPGTT(dev_priv);
                break;
        case I915_PARAM_HAS_SEMAPHORES:
                value = i915.semaphores;
                break;
-       case I915_PARAM_HAS_PRIME_VMAP_FLUSH:
-               value = 1;
-               break;
        case I915_PARAM_HAS_SECURE_BATCHES:
                value = capable(CAP_SYS_ADMIN);
                break;
-       case I915_PARAM_HAS_PINNED_BATCHES:
-               value = 1;
-               break;
-       case I915_PARAM_HAS_EXEC_NO_RELOC:
-               value = 1;
-               break;
-       case I915_PARAM_HAS_EXEC_HANDLE_LUT:
-               value = 1;
-               break;
        case I915_PARAM_CMD_PARSER_VERSION:
                value = i915_cmd_parser_get_version(dev_priv);
                break;
-       case I915_PARAM_HAS_COHERENT_PHYS_GTT:
-               value = 1;
-               break;
-       case I915_PARAM_MMAP_VERSION:
-               value = 1;
-               break;
        case I915_PARAM_SUBSLICE_TOTAL:
-               value = INTEL_INFO(dev)->subslice_total;
+               value = INTEL_INFO(dev_priv)->subslice_total;
                if (!value)
                        return -ENODEV;
                break;
        case I915_PARAM_EU_TOTAL:
-               value = INTEL_INFO(dev)->eu_total;
+               value = INTEL_INFO(dev_priv)->eu_total;
                if (!value)
                        return -ENODEV;
                break;
@@ -344,16 +301,13 @@ static int i915_getparam(struct drm_device *dev, void *data,
                value = i915.enable_hangcheck && intel_has_gpu_reset(dev_priv);
                break;
        case I915_PARAM_HAS_RESOURCE_STREAMER:
-               value = HAS_RESOURCE_STREAMER(dev);
-               break;
-       case I915_PARAM_HAS_EXEC_SOFTPIN:
-               value = 1;
+               value = HAS_RESOURCE_STREAMER(dev_priv);
                break;
        case I915_PARAM_HAS_POOLED_EU:
-               value = HAS_POOLED_EU(dev);
+               value = HAS_POOLED_EU(dev_priv);
                break;
        case I915_PARAM_MIN_EU_IN_POOL:
-               value = INTEL_INFO(dev)->min_eu_in_pool;
+               value = INTEL_INFO(dev_priv)->min_eu_in_pool;
                break;
        case I915_PARAM_MMAP_GTT_VERSION:
                /* Though we've started our numbering from 1, and so class all
@@ -362,6 +316,29 @@ static int i915_getparam(struct drm_device *dev, void *data,
                 */
                value = i915_gem_mmap_gtt_version();
                break;
+       case I915_PARAM_MMAP_VERSION:
+               /* Remember to bump this if the version changes! */
+       case I915_PARAM_HAS_GEM:
+       case I915_PARAM_HAS_PAGEFLIPPING:
+       case I915_PARAM_HAS_EXECBUF2: /* depends on GEM */
+       case I915_PARAM_HAS_RELAXED_FENCING:
+       case I915_PARAM_HAS_COHERENT_RINGS:
+       case I915_PARAM_HAS_RELAXED_DELTA:
+       case I915_PARAM_HAS_GEN7_SOL_RESET:
+       case I915_PARAM_HAS_WAIT_TIMEOUT:
+       case I915_PARAM_HAS_PRIME_VMAP_FLUSH:
+       case I915_PARAM_HAS_PINNED_BATCHES:
+       case I915_PARAM_HAS_EXEC_NO_RELOC:
+       case I915_PARAM_HAS_EXEC_HANDLE_LUT:
+       case I915_PARAM_HAS_COHERENT_PHYS_GTT:
+       case I915_PARAM_HAS_EXEC_SOFTPIN:
+               /* For the time being all of these are always true;
+                * if some supported hardware does not have one of these
+                * features this value needs to be provided from
+                * INTEL_INFO(), a feature macro, or similar.
+                */
+               value = 1;
+               break;
        default:
                DRM_DEBUG("Unknown parameter %d\n", param->param);
                return -EINVAL;