From 1c01103cb90197900beb534911de558d7a43d0b3 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Fri, 12 Jul 2013 15:56:02 -0400 Subject: [PATCH] drm/radeon: align VM PTBs (Page Table Blocks) to 32K MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Covers requirements of all current asics. Reviewed-by: Christian König Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/radeon.h | 5 +++++ drivers/gpu/drm/radeon/radeon_gart.c | 12 ++++++------ 2 files changed, 11 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index 82e8e36064e3..001081757895 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -784,6 +784,11 @@ struct radeon_mec { /* number of entries in page table */ #define RADEON_VM_PTE_COUNT (1 << RADEON_VM_BLOCK_SIZE) +/* PTBs (Page Table Blocks) need to be aligned to 32K */ +#define RADEON_VM_PTB_ALIGN_SIZE 32768 +#define RADEON_VM_PTB_ALIGN_MASK (RADEON_VM_PTB_ALIGN_SIZE - 1) +#define RADEON_VM_PTB_ALIGN(a) (((a) + RADEON_VM_PTB_ALIGN_MASK) & ~RADEON_VM_PTB_ALIGN_MASK) + struct radeon_vm { struct list_head list; struct list_head va; diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c index 5ce190b8bd1f..d9d31a383276 100644 --- a/drivers/gpu/drm/radeon/radeon_gart.c +++ b/drivers/gpu/drm/radeon/radeon_gart.c @@ -466,8 +466,8 @@ int radeon_vm_manager_init(struct radeon_device *rdev) size += rdev->vm_manager.max_pfn * 8; size *= 2; r = radeon_sa_bo_manager_init(rdev, &rdev->vm_manager.sa_manager, - RADEON_GPU_PAGE_ALIGN(size), - RADEON_GPU_PAGE_SIZE, + RADEON_VM_PTB_ALIGN(size), + RADEON_VM_PTB_ALIGN_SIZE, RADEON_GEM_DOMAIN_VRAM); if (r) { dev_err(rdev->dev, "failed to allocate vm bo (%dKB)\n", @@ -621,10 +621,10 @@ int radeon_vm_alloc_pt(struct radeon_device *rdev, struct radeon_vm *vm) } retry: - pd_size = RADEON_GPU_PAGE_ALIGN(radeon_vm_directory_size(rdev)); + pd_size = RADEON_VM_PTB_ALIGN(radeon_vm_directory_size(rdev)); r = radeon_sa_bo_new(rdev, &rdev->vm_manager.sa_manager, &vm->page_directory, pd_size, - RADEON_GPU_PAGE_SIZE, false); + RADEON_VM_PTB_ALIGN_SIZE, false); if (r == -ENOMEM) { r = radeon_vm_evict(rdev, vm); if (r) @@ -953,8 +953,8 @@ static int radeon_vm_update_pdes(struct radeon_device *rdev, retry: r = radeon_sa_bo_new(rdev, &rdev->vm_manager.sa_manager, &vm->page_tables[pt_idx], - RADEON_VM_PTE_COUNT * 8, - RADEON_GPU_PAGE_SIZE, false); + RADEON_VM_PTB_ALIGN(RADEON_VM_PTE_COUNT * 8), + RADEON_VM_PTB_ALIGN_SIZE, false); if (r == -ENOMEM) { r = radeon_vm_evict(rdev, vm); -- 2.20.1