diff options
Diffstat (limited to 'linux-core/ati_pcigart.c')
| -rw-r--r-- | linux-core/ati_pcigart.c | 195 |
1 files changed, 183 insertions, 12 deletions
diff --git a/linux-core/ati_pcigart.c b/linux-core/ati_pcigart.c index 7241c2a8..1c876fc0 100644 --- a/linux-core/ati_pcigart.c +++ b/linux-core/ati_pcigart.c @@ -35,6 +35,45 @@ # define ATI_PCIGART_PAGE_SIZE 4096 /**< PCI GART page size */ +static __inline__ void insert_page_into_table(struct ati_pcigart_info *info, u32 page_base, u32 *pci_gart) +{ + switch(info->gart_reg_if) { + case DRM_ATI_GART_IGP: + *pci_gart = cpu_to_le32((page_base) | 0xc); + break; + case DRM_ATI_GART_PCIE: + *pci_gart = cpu_to_le32((page_base >> 8) | 0xc); + break; + default: + case DRM_ATI_GART_PCI: + *pci_gart = cpu_to_le32(page_base); + break; + } +} + +static __inline__ u32 get_page_base_from_table(struct ati_pcigart_info *info, u32 *pci_gart) +{ + u32 retval; + switch(info->gart_reg_if) { + case DRM_ATI_GART_IGP: + retval = *pci_gart; + retval &= ~0xc; + break; + case DRM_ATI_GART_PCIE: + retval = *pci_gart; + retval &= ~0xc; + retval <<= 8; + break; + default: + case DRM_ATI_GART_PCI: + retval = *pci_gart; + break; + } + return retval; +} + + + static void *drm_ati_alloc_pcigart_table(int order) { unsigned long address; @@ -207,18 +246,7 @@ int drm_ati_pcigart_init(struct drm_device *dev, struct ati_pcigart_info *gart_i page_base = (u32) entry->busaddr[i]; for (j = 0; j < (PAGE_SIZE / ATI_PCIGART_PAGE_SIZE); j++) { - switch(gart_info->gart_reg_if) { - case DRM_ATI_GART_IGP: - *pci_gart = cpu_to_le32((page_base) | 0xc); - break; - case DRM_ATI_GART_PCIE: - *pci_gart = cpu_to_le32((page_base >> 8) | 0xc); - break; - default: - case DRM_ATI_GART_PCI: - *pci_gart = cpu_to_le32(page_base); - break; - } + insert_page_into_table(gart_info, page_base, pci_gart); pci_gart++; page_base += ATI_PCIGART_PAGE_SIZE; } @@ -238,3 +266,146 @@ int drm_ati_pcigart_init(struct drm_device *dev, struct ati_pcigart_info *gart_i return ret; } EXPORT_SYMBOL(drm_ati_pcigart_init); + +static int ati_pcigart_needs_unbind_cache_adjust(struct drm_ttm_backend *backend) +{ + return ((backend->flags & DRM_BE_FLAG_BOUND_CACHED) ? 0 : 1); +} + +static int ati_pcigart_populate(struct drm_ttm_backend *backend, + unsigned long num_pages, + struct page **pages) +{ + ati_pcigart_ttm_backend_t *atipci_be = + container_of(backend, ati_pcigart_ttm_backend_t, backend); + + DRM_ERROR("%ld\n", num_pages); + atipci_be->pages = pages; + atipci_be->num_pages = num_pages; + atipci_be->populated = 1; + return 0; +} + +static int ati_pcigart_bind_ttm(struct drm_ttm_backend *backend, + struct drm_bo_mem_reg *bo_mem) +{ + ati_pcigart_ttm_backend_t *atipci_be = + container_of(backend, ati_pcigart_ttm_backend_t, backend); + off_t j; + int i; + struct ati_pcigart_info *info = atipci_be->gart_info; + u32 *pci_gart; + u32 page_base; + unsigned long offset = bo_mem->mm_node->start; + pci_gart = info->addr; + + DRM_ERROR("Offset is %08lX\n", bo_mem->mm_node->start); + j = offset; + while (j < (offset + atipci_be->num_pages)) { + if (get_page_base_from_table(info, pci_gart+j)) + return -EBUSY; + j++; + } + + for (i = 0, j = offset; i < atipci_be->num_pages; i++, j++) { + struct page *cur_page = atipci_be->pages[i]; + /* write value */ + page_base = page_to_phys(cur_page); + insert_page_into_table(info, page_base, pci_gart + j); + } + +#if defined(__i386__) || defined(__x86_64__) + wbinvd(); +#else + mb(); +#endif + + atipci_be->gart_flush_fn(atipci_be->dev); + + atipci_be->bound = 1; + atipci_be->offset = offset; + /* need to traverse table and add entries */ + DRM_DEBUG("\n"); + return 0; +} + +static int ati_pcigart_unbind_ttm(struct drm_ttm_backend *backend) +{ + ati_pcigart_ttm_backend_t *atipci_be = + container_of(backend, ati_pcigart_ttm_backend_t, backend); + struct ati_pcigart_info *info = atipci_be->gart_info; + unsigned long offset = atipci_be->offset; + int i; + off_t j; + u32 *pci_gart = info->addr; + + DRM_DEBUG("\n"); + + if (atipci_be->bound != 1) + return -EINVAL; + + for (i = 0, j = offset; i < atipci_be->num_pages; i++, j++) { + *(pci_gart + j) = 0; + } + atipci_be->gart_flush_fn(atipci_be->dev); + atipci_be->bound = 0; + atipci_be->offset = 0; + return 0; +} + +static void ati_pcigart_clear_ttm(struct drm_ttm_backend *backend) +{ + ati_pcigart_ttm_backend_t *atipci_be = + container_of(backend, ati_pcigart_ttm_backend_t, backend); + + DRM_DEBUG("\n"); + if (atipci_be->pages) { + backend->func->unbind(backend); + atipci_be->pages = NULL; + + } + atipci_be->num_pages = 0; +} + +static void ati_pcigart_destroy_ttm(struct drm_ttm_backend *backend) +{ + ati_pcigart_ttm_backend_t *atipci_be; + if (backend) { + DRM_DEBUG("\n"); + atipci_be = container_of(backend, ati_pcigart_ttm_backend_t, backend); + if (atipci_be) { + if (atipci_be->pages) { + backend->func->clear(backend); + } + drm_ctl_free(atipci_be, sizeof(*atipci_be), DRM_MEM_TTM); + } + } +} + +static struct drm_ttm_backend_func ati_pcigart_ttm_backend = +{ + .needs_ub_cache_adjust = ati_pcigart_needs_unbind_cache_adjust, + .populate = ati_pcigart_populate, + .clear = ati_pcigart_clear_ttm, + .bind = ati_pcigart_bind_ttm, + .unbind = ati_pcigart_unbind_ttm, + .destroy = ati_pcigart_destroy_ttm, +}; + +struct drm_ttm_backend *ati_pcigart_init_ttm(struct drm_device *dev, struct ati_pcigart_info *info, void (*gart_flush_fn)(struct drm_device *dev)) +{ + ati_pcigart_ttm_backend_t *atipci_be; + + atipci_be = drm_ctl_calloc(1, sizeof (*atipci_be), DRM_MEM_TTM); + if (!atipci_be) + return NULL; + + atipci_be->populated = 0; + atipci_be->backend.func = &ati_pcigart_ttm_backend; + atipci_be->gart_info = info; + atipci_be->gart_flush_fn = gart_flush_fn; + atipci_be->dev = dev; + + return &atipci_be->backend; +} +EXPORT_SYMBOL(ati_pcigart_init_ttm); |