drm/i915: don't store the reg value for HWS_PGA
It is trivially computable from the real physical address so no need to
store both.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 8924b4b..7273037 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -43,6 +43,17 @@
#include <linux/slab.h>
#include <acpi/video.h>
+static void i915_write_hws_pga(struct drm_device *dev)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ u32 addr;
+
+ addr = dev_priv->status_page_dmah->busaddr;
+ if (INTEL_INFO(dev)->gen >= 4)
+ addr |= (dev_priv->status_page_dmah->busaddr >> 28) & 0xf0;
+ I915_WRITE(HWS_PGA, addr);
+}
+
/**
* Sets up the hardware status page for devices that need a physical address
* in the register.
@@ -62,15 +73,11 @@
}
ring->status_page.page_addr =
(void __force __iomem *)dev_priv->status_page_dmah->vaddr;
- dev_priv->dma_status_page = dev_priv->status_page_dmah->busaddr;
memset_io(ring->status_page.page_addr, 0, PAGE_SIZE);
- if (INTEL_INFO(dev)->gen >= 4)
- dev_priv->dma_status_page |= (dev_priv->dma_status_page >> 28) &
- 0xf0;
+ i915_write_hws_pga(dev);
- I915_WRITE(HWS_PGA, dev_priv->dma_status_page);
DRM_DEBUG_DRIVER("Enabled hardware status page\n");
return 0;
}
@@ -217,7 +224,7 @@
if (ring->status_page.gfx_addr != 0)
intel_ring_setup_status_page(ring);
else
- I915_WRITE(HWS_PGA, dev_priv->dma_status_page);
+ i915_write_hws_pga(dev);
DRM_DEBUG_DRIVER("Enabled hardware status page\n");