| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20220317165144.222101-2-robdclark@gmail.com>
Date: Thu, 17 Mar 2022 09:51:38 -0700
From: Rob Clark <robdclark@...il.com>
To: dri-devel@...ts.freedesktop.org
Cc: freedreno@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
Dan Carpenter <dan.carpenter@...cle.com>,
Rob Clark <robdclark@...omium.org>,
Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
Abhinav Kumar <quic_abhinavk@...cinc.com>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
Akhil P Oommen <quic_akhilpo@...cinc.com>,
Jonathan Marek <jonathan@...ek.ca>,
Jordan Crouse <jordan@...micpenguin.net>,
Christian König <christian.koenig@....com>,
Emma Anholt <emma@...olt.net>,
Vladimir Lypak <vladimir.lypak@...il.com>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v2 1/3] drm/msm: Add support for pointer params
From: Rob Clark <robdclark@...omium.org>
The 64b value field is already suffient to hold a pointer instead of
immediate, but we also need a length field.
Signed-off-by: Rob Clark <robdclark@...omium.org>
---
drivers/gpu/drm/msm/adreno/adreno_gpu.c | 12 ++++++++++--
drivers/gpu/drm/msm/adreno/adreno_gpu.h | 4 ++--
drivers/gpu/drm/msm/msm_drv.c | 8 ++++----
drivers/gpu/drm/msm/msm_gpu.h | 4 ++--
drivers/gpu/drm/msm/msm_rd.c | 5 +++--
include/uapi/drm/msm_drm.h | 2 ++
6 files changed, 23 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index 9efc84929be0..3d307b34854d 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -229,10 +229,14 @@ adreno_iommu_create_address_space(struct msm_gpu *gpu,
}
int adreno_get_param(struct msm_gpu *gpu, struct msm_file_private *ctx,
- uint32_t param, uint64_t *value)
+ uint32_t param, uint64_t *value, uint32_t *len)
{
struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
+ /* No pointer params yet */
+ if (*len != 0)
+ return -EINVAL;
+
switch (param) {
case MSM_PARAM_GPU_ID:
*value = adreno_gpu->info->revn;
@@ -284,8 +288,12 @@ int adreno_get_param(struct msm_gpu *gpu, struct msm_file_private *ctx,
}
int adreno_set_param(struct msm_gpu *gpu, struct msm_file_private *ctx,
- uint32_t param, uint64_t value)
+ uint32_t param, uint64_t value, uint32_t len)
{
+ /* No pointer params yet */
+ if (len != 0)
+ return -EINVAL;
+
switch (param) {
case MSM_PARAM_SYSPROF:
if (!capable(CAP_SYS_ADMIN))
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
index 0490c5fbb780..ab3b5ef80332 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
@@ -281,9 +281,9 @@ static inline int adreno_is_a650_family(struct adreno_gpu *gpu)
}
int adreno_get_param(struct msm_gpu *gpu, struct msm_file_private *ctx,
- uint32_t param, uint64_t *value);
+ uint32_t param, uint64_t *value, uint32_t *len);
int adreno_set_param(struct msm_gpu *gpu, struct msm_file_private *ctx,
- uint32_t param, uint64_t value);
+ uint32_t param, uint64_t value, uint32_t len);
const struct firmware *adreno_request_fw(struct adreno_gpu *adreno_gpu,
const char *fwname);
struct drm_gem_object *adreno_fw_create_bo(struct msm_gpu *gpu,
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 780f9748aaaf..a5eed5738ac8 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -610,7 +610,7 @@ static int msm_ioctl_get_param(struct drm_device *dev, void *data,
/* for now, we just have 3d pipe.. eventually this would need to
* be more clever to dispatch to appropriate gpu module:
*/
- if (args->pipe != MSM_PIPE_3D0)
+ if ((args->pipe != MSM_PIPE_3D0) || (args->pad != 0))
return -EINVAL;
gpu = priv->gpu;
@@ -619,7 +619,7 @@ static int msm_ioctl_get_param(struct drm_device *dev, void *data,
return -ENXIO;
return gpu->funcs->get_param(gpu, file->driver_priv,
- args->param, &args->value);
+ args->param, &args->value, &args->len);
}
static int msm_ioctl_set_param(struct drm_device *dev, void *data,
@@ -629,7 +629,7 @@ static int msm_ioctl_set_param(struct drm_device *dev, void *data,
struct drm_msm_param *args = data;
struct msm_gpu *gpu;
- if (args->pipe != MSM_PIPE_3D0)
+ if ((args->pipe != MSM_PIPE_3D0) || (args->pad != 0))
return -EINVAL;
gpu = priv->gpu;
@@ -638,7 +638,7 @@ static int msm_ioctl_set_param(struct drm_device *dev, void *data,
return -ENXIO;
return gpu->funcs->set_param(gpu, file->driver_priv,
- args->param, args->value);
+ args->param, args->value, args->len);
}
static int msm_ioctl_gem_new(struct drm_device *dev, void *data,
diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h
index a84140055920..c28c2ad9f52e 100644
--- a/drivers/gpu/drm/msm/msm_gpu.h
+++ b/drivers/gpu/drm/msm/msm_gpu.h
@@ -44,9 +44,9 @@ struct msm_gpu_config {
*/
struct msm_gpu_funcs {
int (*get_param)(struct msm_gpu *gpu, struct msm_file_private *ctx,
- uint32_t param, uint64_t *value);
+ uint32_t param, uint64_t *value, uint32_t *len);
int (*set_param)(struct msm_gpu *gpu, struct msm_file_private *ctx,
- uint32_t param, uint64_t value);
+ uint32_t param, uint64_t value, uint32_t len);
int (*hw_init)(struct msm_gpu *gpu);
int (*pm_suspend)(struct msm_gpu *gpu);
int (*pm_resume)(struct msm_gpu *gpu);
diff --git a/drivers/gpu/drm/msm/msm_rd.c b/drivers/gpu/drm/msm/msm_rd.c
index 9d835331f214..a92ffde53f0b 100644
--- a/drivers/gpu/drm/msm/msm_rd.c
+++ b/drivers/gpu/drm/msm/msm_rd.c
@@ -180,6 +180,7 @@ static int rd_open(struct inode *inode, struct file *file)
struct msm_gpu *gpu = priv->gpu;
uint64_t val;
uint32_t gpu_id;
+ uint32_t zero = 0;
int ret = 0;
if (!gpu)
@@ -200,12 +201,12 @@ static int rd_open(struct inode *inode, struct file *file)
*
* Note: These particular params do not require a context
*/
- gpu->funcs->get_param(gpu, NULL, MSM_PARAM_GPU_ID, &val);
+ gpu->funcs->get_param(gpu, NULL, MSM_PARAM_GPU_ID, &val, &zero);
gpu_id = val;
rd_write_section(rd, RD_GPU_ID, &gpu_id, sizeof(gpu_id));
- gpu->funcs->get_param(gpu, NULL, MSM_PARAM_CHIP_ID, &val);
+ gpu->funcs->get_param(gpu, NULL, MSM_PARAM_CHIP_ID, &val, &zero);
rd_write_section(rd, RD_CHIP_ID, &val, sizeof(val));
out:
diff --git a/include/uapi/drm/msm_drm.h b/include/uapi/drm/msm_drm.h
index 07efc8033492..0aa1a8cb4e0d 100644
--- a/include/uapi/drm/msm_drm.h
+++ b/include/uapi/drm/msm_drm.h
@@ -95,6 +95,8 @@ struct drm_msm_param {
__u32 pipe; /* in, MSM_PIPE_x */
__u32 param; /* in, MSM_PARAM_x */
__u64 value; /* out (get_param) or in (set_param) */
+ __u32 len; /* zero for non-pointer params */
+ __u32 pad; /* must be zero */
};
/*
--
2.35.1
Powered by blists - more mailing lists