qxl use ioremap to map ram_header and rom, in the arm64 implementation, the device is mapped as DEVICE_nGnRE, it can not support unaligned access. and qxl is a virtual device, it can be treated more like RAM than actual MMIO registers. use ioremap_wc() replace it.
Signed-off-by: Cong Liu liucong2@kylinos.cn --- drivers/gpu/drm/qxl/qxl_kms.c | 4 ++-- drivers/gpu/drm/qxl/qxl_ttm.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/qxl/qxl_kms.c b/drivers/gpu/drm/qxl/qxl_kms.c index 4dc5ad13f12c..a054e4a00fe8 100644 --- a/drivers/gpu/drm/qxl/qxl_kms.c +++ b/drivers/gpu/drm/qxl/qxl_kms.c @@ -165,7 +165,7 @@ int qxl_device_init(struct qxl_device *qdev, (int)qdev->surfaceram_size / 1024, (sb == 4) ? "64bit" : "32bit");
- qdev->rom = ioremap(qdev->rom_base, qdev->rom_size); + qdev->rom = ioremap_wc(qdev->rom_base, qdev->rom_size); if (!qdev->rom) { pr_err("Unable to ioremap ROM\n"); r = -ENOMEM; @@ -183,7 +183,7 @@ int qxl_device_init(struct qxl_device *qdev, goto rom_unmap; }
- qdev->ram_header = ioremap(qdev->vram_base + + qdev->ram_header = ioremap_wc(qdev->vram_base + qdev->rom->ram_header_offset, sizeof(*qdev->ram_header)); if (!qdev->ram_header) { diff --git a/drivers/gpu/drm/qxl/qxl_ttm.c b/drivers/gpu/drm/qxl/qxl_ttm.c index b2e33d5ba5d0..95df5750f47f 100644 --- a/drivers/gpu/drm/qxl/qxl_ttm.c +++ b/drivers/gpu/drm/qxl/qxl_ttm.c @@ -82,13 +82,13 @@ int qxl_ttm_io_mem_reserve(struct ttm_device *bdev, case TTM_PL_VRAM: mem->bus.is_iomem = true; mem->bus.offset = (mem->start << PAGE_SHIFT) + qdev->vram_base; - mem->bus.caching = ttm_cached; + mem->bus.caching = ttm_write_combined; break; case TTM_PL_PRIV: mem->bus.is_iomem = true; mem->bus.offset = (mem->start << PAGE_SHIFT) + qdev->surfaceram_base; - mem->bus.caching = ttm_cached; + mem->bus.caching = ttm_write_combined; break; default: return -EINVAL;