[PATCH 2/5] drm/msm: replace MSM_BO_UNCACHED with MSM_BO_WC for internal objects

Jonathan Marek
2021-04-23T19:12:18Z

msm_gem_get_vaddr() currently always maps as writecombine, so use the right
flag instead of relying on broken behavior (things don't actually work if
they are mapped as uncached).

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
---
drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 4 ++--
drivers/gpu/drm/msm/adreno/a5xx_power.c | 2 +-
drivers/gpu/drm/msm/adreno/a5xx_preempt.c | 4 ++--
drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 2 +-
drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c | 2 +-
drivers/gpu/drm/msm/adreno/adreno_gpu.c | 2 +-
drivers/gpu/drm/msm/dsi/dsi_host.c | 2 +-
7 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
index ce13d49e615b..eb0f884eaf30 100644
--- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
@@ -902,7 +902,7 @@ static int a5xx_hw_init(struct msm_gpu *gpu)
if (!a5xx_gpu->shadow_bo) {
a5xx_gpu->shadow = msm_gem_kernel_new(gpu->dev,
sizeof(u32) * gpu->nr_rings,
- MSM_BO_UNCACHED | MSM_BO_MAP_PRIV,
+ MSM_BO_WC | MSM_BO_MAP_PRIV,
gpu->aspace, &a5xx_gpu->shadow_bo,
&a5xx_gpu->shadow_iova);

@@ -1407,7 +1407,7 @@ static int a5xx_crashdumper_init(struct msm_gpu *gpu,
struct a5xx_crashdumper *dumper)
{
dumper->ptr = msm_gem_kernel_new_locked(gpu->dev,
- SZ_1M, MSM_BO_UNCACHED, gpu->aspace,
+ SZ_1M, MSM_BO_WC, gpu->aspace,
&dumper->bo, &dumper->iova);

if (!IS_ERR(dumper->ptr))
diff --git a/drivers/gpu/drm/msm/adreno/a5xx_power.c b/drivers/gpu/drm/msm/adreno/a5xx_power.c
index c35b06b46fcc..cdb165236a88 100644
--- a/drivers/gpu/drm/msm/adreno/a5xx_power.c
+++ b/drivers/gpu/drm/msm/adreno/a5xx_power.c
@@ -363,7 +363,7 @@ void a5xx_gpmu_ucode_init(struct msm_gpu *gpu)
bosize = (cmds_size + (cmds_size / TYPE4_MAX_PAYLOAD) + 1) << 2;

ptr = msm_gem_kernel_new_locked(drm, bosize,
- MSM_BO_UNCACHED | MSM_BO_GPU_READONLY, gpu->aspace,
+ MSM_BO_WC | MSM_BO_GPU_READONLY, gpu->aspace,
&a5xx_gpu->gpmu_bo, &a5xx_gpu->gpmu_iova);
if (IS_ERR(ptr))
return;
diff --git a/drivers/gpu/drm/msm/adreno/a5xx_preempt.c b/drivers/gpu/drm/msm/adreno/a5xx_preempt.c
index 42eaef7ad7c7..ee72510ff8ce 100644
--- a/drivers/gpu/drm/msm/adreno/a5xx_preempt.c
+++ b/drivers/gpu/drm/msm/adreno/a5xx_preempt.c
@@ -230,7 +230,7 @@ static int preempt_init_ring(struct a5xx_gpu *a5xx_gpu,

ptr = msm_gem_kernel_new(gpu->dev,
A5XX_PREEMPT_RECORD_SIZE + A5XX_PREEMPT_COUNTER_SIZE,
- MSM_BO_UNCACHED | MSM_BO_MAP_PRIV, gpu->aspace, &bo, &iova);
+ MSM_BO_WC | MSM_BO_MAP_PRIV, gpu->aspace, &bo, &iova);

if (IS_ERR(ptr))
return PTR_ERR(ptr);
@@ -238,7 +238,7 @@ static int preempt_init_ring(struct a5xx_gpu *a5xx_gpu,
/* The buffer to store counters needs to be unprivileged */
counters = msm_gem_kernel_new(gpu->dev,
A5XX_PREEMPT_COUNTER_SIZE,
- MSM_BO_UNCACHED, gpu->aspace, &counters_bo, &counters_iova);
+ MSM_BO_WC, gpu->aspace, &counters_bo, &counters_iova);
if (IS_ERR(counters)) {
msm_gem_kernel_put(bo, gpu->aspace, true);
return PTR_ERR(counters);
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index 5214a15db95f..1716984c68a8 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -852,7 +852,7 @@ static int a6xx_hw_init(struct msm_gpu *gpu)
if (!a6xx_gpu->shadow_bo) {
a6xx_gpu->shadow = msm_gem_kernel_new_locked(gpu->dev,
sizeof(u32) * gpu->nr_rings,
- MSM_BO_UNCACHED | MSM_BO_MAP_PRIV,
+ MSM_BO_WC | MSM_BO_MAP_PRIV,
gpu->aspace, &a6xx_gpu->shadow_bo,
&a6xx_gpu->shadow_iova);

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
index c1699b4f9a89..21c49c5b4519 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
@@ -113,7 +113,7 @@ static int a6xx_crashdumper_init(struct msm_gpu *gpu,
struct a6xx_crashdumper *dumper)
{
dumper->ptr = msm_gem_kernel_new_locked(gpu->dev,
- SZ_1M, MSM_BO_UNCACHED, gpu->aspace,
+ SZ_1M, MSM_BO_WC, gpu->aspace,
&dumper->bo, &dumper->iova);

if (!IS_ERR(dumper->ptr))
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index 17f3e45fd5ff..c1332b2459ec 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -391,7 +391,7 @@ struct drm_gem_object *adreno_fw_create_bo(struct msm_gpu *gpu,
void *ptr;

ptr = msm_gem_kernel_new_locked(gpu->dev, fw->size - 4,
- MSM_BO_UNCACHED | MSM_BO_GPU_READONLY, gpu->aspace, &bo, iova);
+ MSM_BO_WC | MSM_BO_GPU_READONLY, gpu->aspace, &bo, iova);

if (IS_ERR(ptr))
return ERR_CAST(ptr);
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 055cd1c7c9fe..18c80744e331 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -1155,7 +1155,7 @@ int dsi_tx_buf_alloc_6g(struct msm_dsi_host *msm_host, int size)
uint64_t iova;
u8 *data;

- data = msm_gem_kernel_new(dev, size, MSM_BO_UNCACHED,
+ data = msm_gem_kernel_new(dev, size, MSM_BO_WC,
priv->kms->aspace,
&msm_host->tx_gem_obj, &iova);

--
2.26.1