diff options
| author |   Sjur Brændeland <sjur.brandeland@stericsson.com> | 2013-02-21 18:15:40 +0100 |
|---|---|---|
| committer |   Ohad Ben-Cohen <ohad@wizery.com> | 2013-04-07 14:06:17 +0300 |
| commit | c0d631570ad54a8561f5fc7023e96b5316c7fdb9 (patch) | |
| tree | 0d10e2d1022267540868402e90bc08f336bd229a /drivers/remoteproc | |
| parent | remoteproc: support virtio config space. (diff) | |
| download | linux-dev-c0d631570ad54a8561f5fc7023e96b5316c7fdb9.tar.xz linux-dev-c0d631570ad54a8561f5fc7023e96b5316c7fdb9.zip | |
remoteproc: set vring addresses in resource table
Set the vring addresses in the resource table so that
the remote device can read the actual addresses used.
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Acked-by: Ido Yariv <ido@wizery.com>
[rebase]
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Diffstat (limited to 'drivers/remoteproc')
| -rw-r--r-- | drivers/remoteproc/remoteproc_core.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index d0251fe9e119..7c357370083a 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -194,6 +194,7 @@ int rproc_alloc_vring(struct rproc_vdev *rvdev, int i) struct rproc *rproc = rvdev->rproc; struct device *dev = &rproc->dev; struct rproc_vring *rvring = &rvdev->vring[i]; + struct fw_rsc_vdev *rsc; dma_addr_t dma; void *va; int ret, size, notifyid; @@ -204,7 +205,6 @@ int rproc_alloc_vring(struct rproc_vdev *rvdev, int i) /* * Allocate non-cacheable memory for the vring. In the future * this call will also configure the IOMMU for us - * TODO: let the rproc know the da of this vring */ va = dma_alloc_coherent(dev->parent, size, &dma, GFP_KERNEL); if (!va) { @@ -215,7 +215,6 @@ int rproc_alloc_vring(struct rproc_vdev *rvdev, int i) /* * Assign an rproc-wide unique index for this vring * TODO: assign a notifyid for rvdev updates as well - * TODO: let the rproc know the notifyid of this vring * TODO: support predefined notifyids (via resource table) */ ret = idr_alloc(&rproc->notifyids, rvring, 0, 0, GFP_KERNEL); @@ -233,6 +232,15 @@ int rproc_alloc_vring(struct rproc_vdev *rvdev, int i) rvring->dma = dma; rvring->notifyid = notifyid; + /* + * Let the rproc know the notifyid and da of this vring. + * Not all platforms use dma_alloc_coherent to automatically + * set up the iommu. In this case the device address (da) will + * hold the physical address and not the device address. + */ + rsc = (void *)rproc->table_ptr + rvdev->rsc_offset; + rsc->vring[i].da = dma; + rsc->vring[i].notifyid = notifyid; return 0; } @@ -271,9 +279,16 @@ void rproc_free_vring(struct rproc_vring *rvring) { int size = PAGE_ALIGN(vring_size(rvring->len, rvring->align)); struct rproc *rproc = rvring->rvdev->rproc; + int idx = rvring->rvdev->vring - rvring; + struct fw_rsc_vdev *rsc; dma_free_coherent(rproc->dev.parent, size, rvring->va, rvring->dma); idr_remove(&rproc->notifyids, rvring->notifyid); + + /* reset resource entry info */ + rsc = (void *)rproc->table_ptr + rvring->rvdev->rsc_offset; + rsc->vring[idx].da = 0; + rsc->vring[idx].notifyid = -1; } /** |