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.gmeiner@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; }