diff options
Diffstat (limited to 'drivers/staging/gma500/gtt.c')
| -rw-r--r-- | drivers/staging/gma500/gtt.c | 33 |
1 files changed, 28 insertions, 5 deletions
diff --git a/drivers/staging/gma500/gtt.c b/drivers/staging/gma500/gtt.c index 6cfa59bea447..28f2261b6222 100644 --- a/drivers/staging/gma500/gtt.c +++ b/drivers/staging/gma500/gtt.c @@ -395,12 +395,10 @@ int psb_gtt_init(struct drm_device *dev, int resume) (void) PSB_RVDC32(PSB_PGETBL_CTL); /* The root resource we allocate address space from */ - dev_priv->gtt_mem = &dev->pdev->resource[PSB_GATT_RESOURCE]; dev_priv->gtt_initialized = 1; - pg->gtt_phys_start = dev_priv->pge_ctl & PAGE_MASK; - - pg->gatt_start = pci_resource_start(dev->pdev, PSB_GATT_RESOURCE); + pg->gtt_phys_start = dev_priv->pge_ctl; + /* * FIXME: video mmu has hw bug to access 0x0D0000000, * then make gatt start at 0x0e000,0000 @@ -410,8 +408,33 @@ int psb_gtt_init(struct drm_device *dev, int resume) pg->gtt_start = pci_resource_start(dev->pdev, PSB_GTT_RESOURCE); gtt_pages = pci_resource_len(dev->pdev, PSB_GTT_RESOURCE) >> PAGE_SHIFT; + /* CDV workaround */ + if (pg->gtt_start == 0 || gtt_pages == 0) { + dev_err(dev->dev, "GTT PCI BAR not initialized.\n"); + gtt_pages = 64; + pg->gtt_start = dev_priv->pge_ctl; + } + + pg->gatt_start = pci_resource_start(dev->pdev, PSB_GATT_RESOURCE); pg->gatt_pages = pci_resource_len(dev->pdev, PSB_GATT_RESOURCE) >> PAGE_SHIFT; + dev_priv->gtt_mem = &dev->pdev->resource[PSB_GATT_RESOURCE]; + + if (pg->gatt_pages == 0 || pg->gatt_start == 0) { + static struct resource fudge; /* Preferably peppermint */ + + /* This can occur on CDV SDV systems. Fudge it in this case. + We really don't care what imaginary space is being allocated + at this point */ + dev_err(dev->dev, "GATT PCI BAR not initialized.\n"); + pg->gatt_start = 0x40000000; + pg->gatt_pages = (128 * 1024 * 1024) >> PAGE_SHIFT; + fudge.start = 0x40000000; + fudge.end = 0x40000000 + 128 * 1024 * 1024 - 1; + fudge.name = "fudge"; + fudge.flags = IORESOURCE_MEM; + dev_priv->gtt_mem = &fudge; + } pci_read_config_dword(dev->pdev, PSB_BSM, &dev_priv->stolen_base); vram_stolen_size = pg->gtt_phys_start - dev_priv->stolen_base @@ -463,7 +486,7 @@ int psb_gtt_init(struct drm_device *dev, int resume) pfn_base = dev_priv->stolen_base >> PAGE_SHIFT; vram_pages = num_pages = vram_stolen_size >> PAGE_SHIFT; printk(KERN_INFO"Set up %d stolen pages starting at 0x%08x, GTT offset %dK\n", - num_pages, pfn_base, 0); + num_pages, pfn_base << PAGE_SHIFT, 0); for (i = 0; i < num_pages; ++i) { pte = psb_gtt_mask_pte(pfn_base + i, 0); iowrite32(pte, dev_priv->gtt_map + i); |