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authorCong Liu <liucong2@kylinos.cn>2022-03-24 13:49:28 +0300
committerGerd Hoffmann <kraxel@redhat.com>2022-03-25 14:28:28 +0300
commit59ab4ee012f0166873ae15d235b2450f21dcb5e7 (patch)
tree6b047c5e99c5aebb683f5559f3bbbcac29199add /drivers/gpu/drm/qxl
parentec3cbb30893be248d180dd748ee9148d408a99d1 (diff)
downloadlinux-59ab4ee012f0166873ae15d235b2450f21dcb5e7.tar.xz
drm/qxl: fix qxl can't use in arm64
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> Acked-by: Christian König <christian.koenig@amd.com> Link: http://patchwork.freedesktop.org/patch/msgid/20220324104928.2959545-1-liucong2@kylinos.cn Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/qxl')
-rw-r--r--drivers/gpu/drm/qxl/qxl_kms.c4
-rw-r--r--drivers/gpu/drm/qxl/qxl_ttm.c4
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;