drm/i915: Add support for the G33, Q33, and Q35 chipsets.
These require that the status page be referenced by a pointer in GTT, rather
than phsyical memory. So, we have the X Server allocate that memory and tell
us the address, instead.
Signed-off-by: Dave Airlie <airlied@linux.ie>
diff --git a/drivers/char/drm/i915_dma.c b/drivers/char/drm/i915_dma.c
index 730dfee..ea52740a 100644
--- a/drivers/char/drm/i915_dma.c
+++ b/drivers/char/drm/i915_dma.c
@@ -38,6 +38,10 @@
dev->pci_device == 0x2A02 || \
dev->pci_device == 0x2A12)
+#define IS_G33(dev) (dev->pci_device == 0x29b2 || \
+ dev->pci_device == 0x29c2 || \
+ dev->pci_device == 0x29d2)
+
/* Really want an OS-independent resettable timer. Would like to have
* this loop run for (eg) 3 sec, but have the timer reset every time
* the head pointer changes, so that EBUSY only happens if the ring
@@ -107,6 +111,12 @@
I915_WRITE(0x02080, 0x1ffff000);
}
+ if (dev_priv->status_gfx_addr) {
+ dev_priv->status_gfx_addr = 0;
+ drm_core_ioremapfree(&dev_priv->hws_map, dev);
+ I915_WRITE(0x2080, 0x1ffff000);
+ }
+
drm_free(dev->dev_private, sizeof(drm_i915_private_t),
DRM_MEM_DRIVER);
@@ -180,26 +190,24 @@
dev_priv->allow_batchbuffer = 1;
/* Program Hardware Status Page */
- dev_priv->status_page_dmah = drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE,
- 0xffffffff);
+ if (!IS_G33(dev)) {
+ dev_priv->status_page_dmah =
+ drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE, 0xffffffff);
- if (!dev_priv->status_page_dmah) {
- dev->dev_private = (void *)dev_priv;
- i915_dma_cleanup(dev);
- DRM_ERROR("Can not allocate hardware status page\n");
- return DRM_ERR(ENOMEM);
+ if (!dev_priv->status_page_dmah) {
+ dev->dev_private = (void *)dev_priv;
+ i915_dma_cleanup(dev);
+ DRM_ERROR("Can not allocate hardware status page\n");
+ return DRM_ERR(ENOMEM);
+ }
+ dev_priv->hw_status_page = dev_priv->status_page_dmah->vaddr;
+ dev_priv->dma_status_page = dev_priv->status_page_dmah->busaddr;
+
+ memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
+ I915_WRITE(0x02080, dev_priv->dma_status_page);
}
- dev_priv->hw_status_page = dev_priv->status_page_dmah->vaddr;
- dev_priv->dma_status_page = dev_priv->status_page_dmah->busaddr;
-
- memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
- DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page);
-
- I915_WRITE(0x02080, dev_priv->dma_status_page);
DRM_DEBUG("Enabled hardware status page\n");
-
dev->dev_private = (void *)dev_priv;
-
return 0;
}
@@ -232,7 +240,10 @@
}
DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page);
- I915_WRITE(0x02080, dev_priv->dma_status_page);
+ if (dev_priv->status_gfx_addr != 0)
+ I915_WRITE(0x02080, dev_priv->status_gfx_addr);
+ else
+ I915_WRITE(0x02080, dev_priv->dma_status_page);
DRM_DEBUG("Enabled hardware status page\n");
return 0;
@@ -740,6 +751,47 @@
return 0;
}
+static int i915_set_status_page(DRM_IOCTL_ARGS)
+{
+ DRM_DEVICE;
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ drm_i915_hws_addr_t hws;
+
+ if (!dev_priv) {
+ DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
+ return DRM_ERR(EINVAL);
+ }
+ DRM_COPY_FROM_USER_IOCTL(hws, (drm_i915_hws_addr_t __user *) data,
+ sizeof(hws));
+ printk(KERN_DEBUG "set status page addr 0x%08x\n", (u32)hws.addr);
+
+ dev_priv->status_gfx_addr = hws.addr & (0x1ffff<<12);
+
+ dev_priv->hws_map.offset = dev->agp->agp_info.aper_base + hws.addr;
+ dev_priv->hws_map.size = 4*1024;
+ dev_priv->hws_map.type = 0;
+ dev_priv->hws_map.flags = 0;
+ dev_priv->hws_map.mtrr = 0;
+
+ drm_core_ioremap(&dev_priv->hws_map, dev);
+ if (dev_priv->hws_map.handle == NULL) {
+ dev->dev_private = (void *)dev_priv;
+ i915_dma_cleanup(dev);
+ dev_priv->status_gfx_addr = 0;
+ DRM_ERROR("can not ioremap virtual address for"
+ " G33 hw status page\n");
+ return DRM_ERR(ENOMEM);
+ }
+ dev_priv->hw_status_page = dev_priv->hws_map.handle;
+
+ memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
+ I915_WRITE(0x02080, dev_priv->status_gfx_addr);
+ DRM_DEBUG("load hws 0x2080 with gfx mem 0x%x\n",
+ dev_priv->status_gfx_addr);
+ DRM_DEBUG("load hws at %p\n", dev_priv->hw_status_page);
+ return 0;
+}
+
int i915_driver_load(drm_device_t *dev, unsigned long flags)
{
/* i915 has 4 more counters */
@@ -786,6 +838,7 @@
[DRM_IOCTL_NR(DRM_I915_SET_VBLANK_PIPE)] = { i915_vblank_pipe_set, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY },
[DRM_IOCTL_NR(DRM_I915_GET_VBLANK_PIPE)] = { i915_vblank_pipe_get, DRM_AUTH },
[DRM_IOCTL_NR(DRM_I915_VBLANK_SWAP)] = {i915_vblank_swap, DRM_AUTH},
+ [DRM_IOCTL_NR(DRM_I915_HWS_ADDR)] = {i915_set_status_page, DRM_AUTH},
};
int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls);