Changes from v1 -> v2:
- renamed submit_perfmon_request() to submit_perfmon_validate()
- extended flags validation
- added comment about offset 0
- moved assigment of cmdbuf->nr_pmrs below the copy_from_user of the pmrs.
Changes from v2 -> v3:
- fixed flags validation
Changes v4 -> v5
- pass cmdbuf->exec_state to etnaviv_pm_req_validate(..)
Signed-off-by: Christian Gmeiner <christian.gmei...@gmail.com>
---
drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c | 69 +++++++++++++++++++++++++++-
1 file changed, 67 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
index 9c57b14dfcbf..36a9ebd26f48 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
@@ -21,6 +21,7 @@
#include "etnaviv_drv.h"
#include "etnaviv_gpu.h"
#include "etnaviv_gem.h"
+#include "etnaviv_perfmon.h"
/*
* Cmdstream submission:
@@ -283,6 +284,54 @@ static int submit_reloc(struct etnaviv_gem_submit *submit,
void *stream,
return 0;
}
+static int submit_perfmon_validate(struct etnaviv_gem_submit *submit,
+ struct etnaviv_cmdbuf *cmdbuf,
+ const struct drm_etnaviv_gem_submit_pmr *pmrs,
+ u32 nr_pms)
+{
+ u32 i;
+
+ for (i = 0; i < nr_pms; i++) {
+ const struct drm_etnaviv_gem_submit_pmr *r = pmrs + i;
+ struct etnaviv_gem_submit_bo *bo;
+ int ret;
+
+ ret = submit_bo(submit, r->read_idx, &bo);
+ if (ret)
+ return ret;
+
+ /* at offset 0 a sequence number gets stored used for userspace
sync */
+ if (r->read_offset == 0) {
+ DRM_ERROR("perfmon request: offset is 0");
+ return -EINVAL;
+ }
+
+ if (r->read_offset >= bo->obj->base.size - sizeof(u32)) {
+ DRM_ERROR("perfmon request: offset %u outside object",
i);
+ return -EINVAL;
+ }
+
+ if (r->flags & ~(ETNA_PM_PROCESS_PRE | ETNA_PM_PROCESS_POST)) {
+ DRM_ERROR("perfmon request: flags are not valid");
+ return -EINVAL;
+ }
+
+ if (etnaviv_pm_req_validate(r, cmdbuf->exec_state)) {
+ DRM_ERROR("perfmon request: domain or signal not
valid");
+ return -EINVAL;
+ }
+
+ cmdbuf->pmrs[i].flags = r->flags;
+ cmdbuf->pmrs[i].domain = r->domain;
+ cmdbuf->pmrs[i].signal = r->signal;
+ cmdbuf->pmrs[i].sequence = r->sequence;
+ cmdbuf->pmrs[i].offset = r->read_offset;
+ cmdbuf->pmrs[i].bo_vma = etnaviv_gem_vmap(&bo->obj->base);
+ }
+
+ return 0;
+}
+
static void submit_cleanup(struct etnaviv_gem_submit *submit)
{
unsigned i;
@@ -306,6 +355,7 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void
*data,
struct etnaviv_drm_private *priv = dev->dev_private;
struct drm_etnaviv_gem_submit *args = data;
struct drm_etnaviv_gem_submit_reloc *relocs;
+ struct drm_etnaviv_gem_submit_pmr *pmrs;
struct drm_etnaviv_gem_submit_bo *bos;
struct etnaviv_gem_submit *submit;
struct etnaviv_cmdbuf *cmdbuf;
@@ -347,11 +397,12 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void
*data,
*/
bos = kvmalloc_array(args->nr_bos, sizeof(*bos), GFP_KERNEL);
relocs = kvmalloc_array(args->nr_relocs, sizeof(*relocs), GFP_KERNEL);
+ pmrs = kvmalloc_array(args->nr_pmrs, sizeof(*pmrs), GFP_KERNEL);
stream = kvmalloc_array(1, args->stream_size, GFP_KERNEL);
cmdbuf = etnaviv_cmdbuf_new(gpu->cmdbuf_suballoc,
ALIGN(args->stream_size, 8) + 8,
- args->nr_bos, 0);
- if (!bos || !relocs || !stream || !cmdbuf) {
+ args->nr_bos, args->nr_pmrs);
+ if (!bos || !relocs || !pmrs || !stream || !cmdbuf) {
ret = -ENOMEM;
goto err_submit_cmds;
}
@@ -373,6 +424,14 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void
*data,
goto err_submit_cmds;
}
+ ret = copy_from_user(pmrs, u64_to_user_ptr(args->pmrs),
+ args->nr_pmrs * sizeof(*pmrs));
+ if (ret) {
+ ret = -EFAULT;
+ goto err_submit_cmds;
+ }
+ cmdbuf->nr_pmrs = args->nr_pmrs;
+
ret = copy_from_user(stream, u64_to_user_ptr(args->stream),
args->stream_size);
if (ret) {
@@ -441,6 +500,10 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void
*data,
if (ret)
goto out;
+ ret = submit_perfmon_validate(submit, cmdbuf, pmrs, args->nr_pmrs);
+ if (ret)
+ goto out;
+
memcpy(cmdbuf->vaddr, stream, args->stream_size);
cmdbuf->user_size = ALIGN(args->stream_size, 8);
@@ -494,6 +557,8 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void
*data,
kvfree(bos);
if (relocs)
kvfree(relocs);
+ if (pmrs)
+ kvfree(pmrs);
return ret;
}
--
2.13.5
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