diff options
Diffstat (limited to 'drivers/gpu/drm/mgag200/mgag200_drv.c')
| -rw-r--r-- | drivers/gpu/drm/mgag200/mgag200_drv.c | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.c b/drivers/gpu/drm/mgag200/mgag200_drv.c index 2fb18b782b..573dbe256a 100644 --- a/drivers/gpu/drm/mgag200/mgag200_drv.c +++ b/drivers/gpu/drm/mgag200/mgag200_drv.c @@ -84,6 +84,20 @@ resource_size_t mgag200_probe_vram(void __iomem *mem, resource_size_t size) return offset - 65536; } +#if defined(CONFIG_DRM_MGAG200_IOBURST_WORKAROUND) +static struct drm_gem_object *mgag200_create_object(struct drm_device *dev, size_t size) +{ + struct drm_gem_shmem_object *shmem; + + shmem = kzalloc(sizeof(*shmem), GFP_KERNEL); + if (!shmem) + return NULL; + + shmem->map_wc = true; + return &shmem->base; +} +#endif + /* * DRM driver */ @@ -99,6 +113,9 @@ static const struct drm_driver mgag200_driver = { .major = DRIVER_MAJOR, .minor = DRIVER_MINOR, .patchlevel = DRIVER_PATCHLEVEL, +#if defined(CONFIG_DRM_MGAG200_IOBURST_WORKAROUND) + .gem_create_object = mgag200_create_object, +#endif DRM_GEM_SHMEM_DRIVER_OPS, }; @@ -146,14 +163,13 @@ int mgag200_device_preinit(struct mga_device *mdev) } mdev->vram_res = res; - /* Don't fail on errors, but performance might be reduced. */ - devm_arch_io_reserve_memtype_wc(dev->dev, res->start, resource_size(res)); - devm_arch_phys_wc_add(dev->dev, res->start, resource_size(res)); - - mdev->vram = devm_ioremap(dev->dev, res->start, resource_size(res)); + mdev->vram = devm_ioremap_wc(dev->dev, res->start, resource_size(res)); if (!mdev->vram) return -ENOMEM; + /* Don't fail on errors, but performance might be reduced. */ + devm_arch_phys_wc_add(dev->dev, res->start, resource_size(res)); + return 0; } |