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remoteproc: modify rproc_handle_carveout to support pre-registered region 

In current version rproc_handle_carveout() function registers carveout
for allocation.
This patch extends rproc_handle_carveout() function to support
pre-registered region. Match is done on region name, then requested
device address and length are checked.
If match found, pre-registered region is associated with resource
table request.
If no name match found, new carveout is registered for allocation.

Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Loic Pallardy 2018-07-27 15:14:46 +02:00 committed by Bjorn Andersson
parent c874bf59ad
commit ffa5f9c848
1 changed files with 30 additions and 0 deletions
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30
drivers/remoteproc/remoteproc_core.c
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@ -840,6 +840,29 @@ static int rproc_handle_carveout(struct rproc *rproc,
dev_dbg(dev, "carveout rsc: name: %s, da 0x%x, pa 0x%x, len 0x%x, flags 0x%x\n",
rsc->name, rsc->da, rsc->pa, rsc->len, rsc->flags);
/*
* Check carveout rsc already part of a registered carveout,
* Search by name, then check the da and length
*/
carveout = rproc_find_carveout_by_name(rproc, rsc->name);
if (carveout) {
if (carveout->rsc_offset != FW_RSC_ADDR_ANY) {
dev_err(dev,
"Carveout already associated to resource table\n");
return -ENOMEM;
}
if (rproc_check_carveout_da(rproc, carveout, rsc->da, rsc->len))
return -ENOMEM;
/* Update memory carveout with resource table info */
carveout->rsc_offset = offset;
carveout->flags = rsc->flags;
return 0;
}
/* Register carveout in in list */
carveout = rproc_mem_entry_init(dev, 0, 0, rsc->len, rsc->da,
rproc_alloc_carveout,
@ -1120,8 +1143,15 @@ static int rproc_alloc_registered_carveouts(struct rproc *rproc)
* In this case, the device address and the physical address
* are the same.
*/
/* Use va if defined else dma to generate pa */
if (entry->va)
rsc->pa = (u32)rproc_va_to_pa(entry->va);
else
rsc->pa = (u32)entry->dma;
rsc->da = entry->da;
rsc->len = entry->len;
}
}