diff options
Diffstat (limited to 'shared-core')
| -rw-r--r-- | shared-core/savage_bci.c | 70 | ||||
| -rw-r--r-- | shared-core/savage_drv.h | 6 |
2 files changed, 75 insertions, 1 deletions
diff --git a/shared-core/savage_bci.c b/shared-core/savage_bci.c index 0f91cf78..4656a902 100644 --- a/shared-core/savage_bci.c +++ b/shared-core/savage_bci.c @@ -283,10 +283,19 @@ void savage_freelist_put(drm_device_t *dev, drm_buf_t *buf) entry->next = next; } +/* + * Initalize permanent mappings. On Savage4 and SavageIX the alignment + * and size of the aperture is not suitable for automatic MTRR setup + * in drm_initmap. Therefore we do it manually before the maps are + * initialized. We also need to take care of deleting the MTRRs in + * postcleanup. + * + * FIXME: this is linux-specific + */ int savage_preinit(drm_device_t *dev, unsigned long chipset) { drm_savage_private_t *dev_priv; - unsigned int mmio_base, fb_base, fb_size, aperture_base; + unsigned long mmio_base, fb_base, fb_size, aperture_base; int ret = 0; dev_priv = drm_alloc(sizeof(drm_savage_private_t), DRM_MEM_DRIVER); @@ -297,21 +306,61 @@ int savage_preinit(drm_device_t *dev, unsigned long chipset) dev->dev_private = (void *)dev_priv; dev_priv->chipset = (enum savage_family)chipset; + dev_priv->mtrr[0].handle = -1; + dev_priv->mtrr[1].handle = -1; + dev_priv->mtrr[2].handle = -1; if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) { fb_base = pci_resource_start(dev->pdev, 0); fb_size = SAVAGE_FB_SIZE_S3; mmio_base = fb_base + SAVAGE_FB_SIZE_S3; aperture_base = fb_base + SAVAGE_APERTURE_OFFSET; + /* this should always be true */ + if (pci_resource_len(dev->pdev, 0) == 0x08000000) { + /* Don't make MMIO write-cobining! We need 3 + * MTRRs. */ + dev_priv->mtrr[0].base = fb_base; + dev_priv->mtrr[0].size = 0x01000000; + dev_priv->mtrr[0].handle = mtrr_add( + dev_priv->mtrr[0].base, dev_priv->mtrr[0].size, + MTRR_TYPE_WRCOMB, 1); + dev_priv->mtrr[1].base = fb_base+0x02000000; + dev_priv->mtrr[1].size = 0x02000000; + dev_priv->mtrr[1].handle = mtrr_add( + dev_priv->mtrr[1].base, dev_priv->mtrr[1].size, + MTRR_TYPE_WRCOMB, 1); + dev_priv->mtrr[2].base = fb_base+0x04000000; + dev_priv->mtrr[2].size = 0x04000000; + dev_priv->mtrr[2].handle = mtrr_add( + dev_priv->mtrr[2].base, dev_priv->mtrr[2].size, + MTRR_TYPE_WRCOMB, 1); + } else { + DRM_ERROR("strange pci_resource_len %08lx\n", + pci_resource_len(dev->pdev, 0)); + } } else if (chipset != S3_SUPERSAVAGE && chipset != S3_SAVAGE2000) { mmio_base = pci_resource_start(dev->pdev, 0); fb_base = pci_resource_start(dev->pdev, 1); fb_size = SAVAGE_FB_SIZE_S4; aperture_base = fb_base + SAVAGE_APERTURE_OFFSET; + /* this should always be true */ + if (pci_resource_len(dev->pdev, 1) == 0x08000000) { + /* Can use one MTRR to cover both fb and + * aperture. */ + dev_priv->mtrr[0].base = fb_base; + dev_priv->mtrr[0].size = 0x08000000; + dev_priv->mtrr[0].handle = mtrr_add( + dev_priv->mtrr[0].base, dev_priv->mtrr[0].size, + MTRR_TYPE_WRCOMB, 1); + } else { + DRM_ERROR("strange pci_resource_len %08lx\n", + pci_resource_len(dev->pdev, 1)); + } } else { mmio_base = pci_resource_start(dev->pdev, 0); fb_base = pci_resource_start(dev->pdev, 1); fb_size = pci_resource_len(dev->pdev, 1); aperture_base = pci_resource_start(dev->pdev, 2); + /* Automatic MTRR setup will do the right thing. */ } if ((ret = drm_initmap(dev, mmio_base, SAVAGE_MMIO_SIZE, @@ -335,6 +384,25 @@ int savage_preinit(drm_device_t *dev, unsigned long chipset) return ret; } +/* + * Delete MTRRs and free device-private data. + */ +int savage_postcleanup(drm_device_t *dev) +{ + drm_savage_private_t *dev_priv = dev->dev_private; + int i; + + for (i = 0; i < 3; ++i) + if (dev_priv->mtrr[i].handle >= 0) + mtrr_del(dev_priv->mtrr[i].handle, + dev_priv->mtrr[i].base, + dev_priv->mtrr[i].size); + + drm_free(dev_priv, sizeof(drm_savage_private_t), DRM_MEM_DRIVER); + + return 0; +} + static int savage_do_init_bci(drm_device_t *dev, drm_savage_init_t *init) { drm_savage_private_t *dev_priv = dev->dev_private; diff --git a/shared-core/savage_drv.h b/shared-core/savage_drv.h index a3671dbe..16211a5a 100644 --- a/shared-core/savage_drv.h +++ b/shared-core/savage_drv.h @@ -140,6 +140,11 @@ typedef struct drm_savage_private { drm_local_map_t *agp_textures; drm_local_map_t *cmd_dma; + struct { + int handle; + unsigned long base, size; + } mtrr[3]; + /* BCI and status-related stuff */ volatile uint32_t *status_ptr, *bci_ptr; uint32_t status_used_mask; @@ -177,6 +182,7 @@ extern uint16_t savage_bci_emit_event(drm_savage_private_t *dev_priv, unsigned int flags); extern void savage_freelist_put(drm_device_t *dev, drm_buf_t *buf); extern int savage_preinit(drm_device_t *dev, unsigned long chipset); +extern int savage_postcleanup(drm_device_t *dev); extern int savage_do_cleanup_bci(drm_device_t *dev); extern void savage_reclaim_buffers(drm_device_t *dev, DRMFILE filp); |