Right now we have two separate tables for doing platform specific init.
With one table it's a lot clearer exactly where new things need to go
(which I'll be doing in a subsequent patch).
There is no intended functional change here. Only cleanup.
Signed-off-by: Ben Widawsky <b...@bwidawsk.net>
---
drivers/gpu/drm/i915/intel_uncore.c | 134 ++++++++++++++++++++----------------
1 file changed, 74 insertions(+), 60 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_uncore.c
b/drivers/gpu/drm/i915/intel_uncore.c
index 76dc185..e206c41 100644
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -739,6 +739,47 @@ __gen4_write(64)
#undef REG_WRITE_FOOTER
#undef REG_WRITE_HEADER
+
+static void ivybridge_setup_forcewake(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 ecobus;
+
+ /* IVB configs may use multi-threaded forcewake */
+
+ /* A small trick here - if the bios hasn't configured MT forcewake, and
+ * if the device is in RC6, then force_wake_mt_get will not wake the
+ * device and the ECOBUS read will return zero. Which will be
+ * (correctly) interpreted by the test below as MT forcewake being
+ * disabled.
+ */
+ mutex_lock(&dev->struct_mutex);
+ __gen7_gt_force_wake_mt_get(dev_priv, FORCEWAKE_ALL);
+ ecobus = __raw_i915_read32(dev_priv, ECOBUS);
+ __gen7_gt_force_wake_mt_put(dev_priv, FORCEWAKE_ALL);
+ mutex_unlock(&dev->struct_mutex);
+
+ if (ecobus & FORCEWAKE_MT_ENABLE) {
+ dev_priv->uncore.funcs.force_wake_get =
__gen7_gt_force_wake_mt_get;
+ dev_priv->uncore.funcs.force_wake_put =
__gen7_gt_force_wake_mt_put;
+ } else {
+ DRM_INFO("No MT forcewake available on Ivybridge, this can
result in issues\n");
+ DRM_INFO("when using vblank-synced partial screen updates.\n");
+ dev_priv->uncore.funcs.force_wake_get =
__gen6_gt_force_wake_get;
+ dev_priv->uncore.funcs.force_wake_put =
__gen6_gt_force_wake_put;
+ }
+}
+
+#define gen6_setup_read_mmio(dev_priv) do { \
+ (dev_priv)->uncore.funcs.mmio_readb = gen6_read8; \
+ (dev_priv)->uncore.funcs.mmio_readw = gen6_read16; \
+ (dev_priv)->uncore.funcs.mmio_readl = gen6_read32; \
+ (dev_priv)->uncore.funcs.mmio_readq = gen6_read64; \
+} while (0)
+
+/* You can use this function to initialize gen specific function pointers
+ * that need to be initialized early.
+ */
void intel_uncore_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
@@ -748,87 +789,60 @@ void intel_uncore_init(struct drm_device *dev)
intel_uncore_early_sanitize(dev);
- if (IS_VALLEYVIEW(dev)) {
- dev_priv->uncore.funcs.force_wake_get = __vlv_force_wake_get;
- dev_priv->uncore.funcs.force_wake_put = __vlv_force_wake_put;
- } else if (IS_HASWELL(dev) || IS_GEN8(dev)) {
+ switch (INTEL_INFO(dev)->gen) {
+ case 8:
dev_priv->uncore.funcs.force_wake_get =
__gen7_gt_force_wake_mt_get;
dev_priv->uncore.funcs.force_wake_put =
__gen7_gt_force_wake_mt_put;
- } else if (IS_IVYBRIDGE(dev)) {
- u32 ecobus;
-
- /* IVB configs may use multi-threaded forcewake */
-
- /* A small trick here - if the bios hasn't configured
- * MT forcewake, and if the device is in RC6, then
- * force_wake_mt_get will not wake the device and the
- * ECOBUS read will return zero. Which will be
- * (correctly) interpreted by the test below as MT
- * forcewake being disabled.
- */
- mutex_lock(&dev->struct_mutex);
- __gen7_gt_force_wake_mt_get(dev_priv, FORCEWAKE_ALL);
- ecobus = __raw_i915_read32(dev_priv, ECOBUS);
- __gen7_gt_force_wake_mt_put(dev_priv, FORCEWAKE_ALL);
- mutex_unlock(&dev->struct_mutex);
-
- if (ecobus & FORCEWAKE_MT_ENABLE) {
- dev_priv->uncore.funcs.force_wake_get =
- __gen7_gt_force_wake_mt_get;
- dev_priv->uncore.funcs.force_wake_put =
- __gen7_gt_force_wake_mt_put;
- } else {
- DRM_INFO("No MT forcewake available on Ivybridge, this
can result in issues\n");
- DRM_INFO("when using vblank-synced partial screen
updates.\n");
- dev_priv->uncore.funcs.force_wake_get =
- __gen6_gt_force_wake_get;
- dev_priv->uncore.funcs.force_wake_put =
- __gen6_gt_force_wake_put;
- }
- } else if (IS_GEN6(dev)) {
- dev_priv->uncore.funcs.force_wake_get =
- __gen6_gt_force_wake_get;
- dev_priv->uncore.funcs.force_wake_put =
- __gen6_gt_force_wake_put;
- }
- switch (INTEL_INFO(dev)->gen) {
- default:
+ gen6_setup_read_mmio(dev_priv);
dev_priv->uncore.funcs.mmio_writeb = gen8_write8;
dev_priv->uncore.funcs.mmio_writew = gen8_write16;
dev_priv->uncore.funcs.mmio_writel = gen8_write32;
dev_priv->uncore.funcs.mmio_writeq = gen8_write64;
- dev_priv->uncore.funcs.mmio_readb = gen6_read8;
- dev_priv->uncore.funcs.mmio_readw = gen6_read16;
- dev_priv->uncore.funcs.mmio_readl = gen6_read32;
- dev_priv->uncore.funcs.mmio_readq = gen6_read64;
+
break;
case 7:
- case 6:
if (IS_HASWELL(dev)) {
+ dev_priv->uncore.funcs.force_wake_get =
__gen7_gt_force_wake_mt_get;
+ dev_priv->uncore.funcs.force_wake_put =
__gen7_gt_force_wake_mt_put;
+
+ gen6_setup_read_mmio(dev_priv);
dev_priv->uncore.funcs.mmio_writeb = hsw_write8;
dev_priv->uncore.funcs.mmio_writew = hsw_write16;
dev_priv->uncore.funcs.mmio_writel = hsw_write32;
dev_priv->uncore.funcs.mmio_writeq = hsw_write64;
- } else {
- dev_priv->uncore.funcs.mmio_writeb = gen6_write8;
- dev_priv->uncore.funcs.mmio_writew = gen6_write16;
- dev_priv->uncore.funcs.mmio_writel = gen6_write32;
- dev_priv->uncore.funcs.mmio_writeq = gen6_write64;
- }
+ } else if (IS_VALLEYVIEW(dev)) {
+ dev_priv->uncore.funcs.force_wake_get =
__vlv_force_wake_get;
+ dev_priv->uncore.funcs.force_wake_put =
__vlv_force_wake_put;
- if (IS_VALLEYVIEW(dev)) {
+ gen6_setup_read_mmio(dev_priv);
dev_priv->uncore.funcs.mmio_readb = vlv_read8;
dev_priv->uncore.funcs.mmio_readw = vlv_read16;
dev_priv->uncore.funcs.mmio_readl = vlv_read32;
dev_priv->uncore.funcs.mmio_readq = vlv_read64;
- } else {
- dev_priv->uncore.funcs.mmio_readb = gen6_read8;
- dev_priv->uncore.funcs.mmio_readw = gen6_read16;
- dev_priv->uncore.funcs.mmio_readl = gen6_read32;
- dev_priv->uncore.funcs.mmio_readq = gen6_read64;
+ } else if (IS_IVYBRIDGE(dev)) {
+ ivybridge_setup_forcewake(dev);
+ BUG_ON(!dev_priv->uncore.funcs.force_wake_get);
+ BUG_ON(!dev_priv->uncore.funcs.force_wake_put);
+
+ gen6_setup_read_mmio(dev_priv);
+ dev_priv->uncore.funcs.mmio_writeb = gen6_write8;
+ dev_priv->uncore.funcs.mmio_writew = gen6_write16;
+ dev_priv->uncore.funcs.mmio_writel = gen6_write32;
+ dev_priv->uncore.funcs.mmio_writeq = gen6_write64;
}
break;
+ case 6:
+ dev_priv->uncore.funcs.force_wake_get =
__gen6_gt_force_wake_get;
+ dev_priv->uncore.funcs.force_wake_put =
__gen6_gt_force_wake_put;
+
+ gen6_setup_read_mmio(dev_priv);
+ dev_priv->uncore.funcs.mmio_writeb = gen6_write8;
+ dev_priv->uncore.funcs.mmio_writew = gen6_write16;
+ dev_priv->uncore.funcs.mmio_writel = gen6_write32;
+ dev_priv->uncore.funcs.mmio_writeq = gen6_write64;
+
+ break;
case 5:
dev_priv->uncore.funcs.mmio_writeb = gen5_write8;
dev_priv->uncore.funcs.mmio_writew = gen5_write16;
--
1.9.1
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