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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>
This commit is contained in:
Sjur Brændeland 2013-02-21 18:15:40 +01:00 committed by Ohad Ben-Cohen
parent 92b38f8514
commit c0d631570a
1 changed files with 17 additions and 2 deletions
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19
drivers/remoteproc/remoteproc_core.c
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@ -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;
}
/**