This code has been unused for a while now. When the explicit checks for whether the driver is running on top of non-coherent swiotlb have been deprecated we lost the ability to fallback to physical mappings. Instead of trying to readd a module parameter to force usage of physical addresses it's better to just force coherent TTM pages via the force_coherent module parameter making this code pointless.
Signed-off-by: Zack Rusin zackr@vmware.com Reviewed-by: Martin Krastev krastevm@vmware.com --- drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 7 +------ drivers/gpu/drm/vmwgfx/vmwgfx_drv.h | 1 - drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c | 19 ------------------- 3 files changed, 1 insertion(+), 26 deletions(-)
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c index b9f18151663a..be3db4988949 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c @@ -272,7 +272,6 @@ static const struct pci_device_id vmw_pci_id_list[] = { MODULE_DEVICE_TABLE(pci, vmw_pci_id_list);
static int enable_fbdev = IS_ENABLED(CONFIG_DRM_VMWGFX_FBCON); -static int vmw_force_iommu; static int vmw_restrict_iommu; static int vmw_force_coherent; static int vmw_restrict_dma_mask; @@ -284,8 +283,6 @@ static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val,
MODULE_PARM_DESC(enable_fbdev, "Enable vmwgfx fbdev"); module_param_named(enable_fbdev, enable_fbdev, int, 0600); -MODULE_PARM_DESC(force_dma_api, "Force using the DMA API for TTM pages"); -module_param_named(force_dma_api, vmw_force_iommu, int, 0600); MODULE_PARM_DESC(restrict_iommu, "Try to limit IOMMU usage for TTM pages"); module_param_named(restrict_iommu, vmw_restrict_iommu, int, 0600); MODULE_PARM_DESC(force_coherent, "Force coherent TTM pages"); @@ -645,7 +642,6 @@ static void vmw_get_initial_size(struct vmw_private *dev_priv) static int vmw_dma_select_mode(struct vmw_private *dev_priv) { static const char *names[vmw_dma_map_max] = { - [vmw_dma_phys] = "Using physical TTM page addresses.", [vmw_dma_alloc_coherent] = "Using coherent TTM pages.", [vmw_dma_map_populate] = "Caching DMA mappings.", [vmw_dma_map_bind] = "Giving up DMA mappings early."}; @@ -679,8 +675,7 @@ static int vmw_dma_masks(struct vmw_private *dev_priv) int ret = 0;
ret = dma_set_mask_and_coherent(dev->dev, DMA_BIT_MASK(64)); - if (dev_priv->map_mode != vmw_dma_phys && - (sizeof(unsigned long) == 4 || vmw_restrict_dma_mask)) { + if (sizeof(unsigned long) == 4 || vmw_restrict_dma_mask) { DRM_INFO("Restricting DMA addresses to 44 bits.\n"); return dma_set_mask_and_coherent(dev->dev, DMA_BIT_MASK(44)); } diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h index 0d8699a43491..31519b78cb6a 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h @@ -314,7 +314,6 @@ struct vmw_res_cache_entry { * enum vmw_dma_map_mode - indicate how to perform TTM page dma mappings. */ enum vmw_dma_map_mode { - vmw_dma_phys, /* Use physical page addresses */ vmw_dma_alloc_coherent, /* Use TTM coherent pages */ vmw_dma_map_populate, /* Unmap from DMA just after unpopulate */ vmw_dma_map_bind, /* Unmap from DMA just before unbind */ diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c index 0488042fb287..a6015f2a297f 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c @@ -237,21 +237,6 @@ static struct page *__vmw_piter_non_sg_page(struct vmw_piter *viter) return viter->pages[viter->i]; }
-/** - * __vmw_piter_phys_addr: Helper functions to return the DMA - * address of the current page. - * - * @viter: Pointer to the iterator - * - * These functions return the DMA address of the page currently - * pointed to by @viter. Functions are selected depending on the - * current mapping mode. - */ -static dma_addr_t __vmw_piter_phys_addr(struct vmw_piter *viter) -{ - return page_to_phys(viter->pages[viter->i]); -} - static dma_addr_t __vmw_piter_dma_addr(struct vmw_piter *viter) { return viter->addrs[viter->i]; @@ -282,10 +267,6 @@ void vmw_piter_start(struct vmw_piter *viter, const struct vmw_sg_table *vsgt, viter->page = &__vmw_piter_non_sg_page; viter->pages = vsgt->pages; switch (vsgt->mode) { - case vmw_dma_phys: - viter->next = &__vmw_piter_non_sg_next; - viter->dma_address = &__vmw_piter_phys_addr; - break; case vmw_dma_alloc_coherent: viter->next = &__vmw_piter_non_sg_next; viter->dma_address = &__vmw_piter_dma_addr;