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| author |   Loic Pallardy <loic.pallardy@st.com> | 2018-07-27 15:14:46 +0200 |
|---|---|---|
| committer |   Bjorn Andersson <bjorn.andersson@linaro.org> | 2018-10-09 22:41:04 -0700 |
| commit | ffa5f9c84810ea175226863f66a51bb2d4502f5b (patch) | |
| tree | f3885db699034d04bbdb25fed447c458911898ca /drivers/remoteproc | |
| parent | remoteproc: add helper function to check carveout device address (diff) | |
| download | linux-dev-ffa5f9c84810ea175226863f66a51bb2d4502f5b.tar.xz linux-dev-ffa5f9c84810ea175226863f66a51bb2d4502f5b.zip | |
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>
Diffstat (limited to 'drivers/remoteproc')
| -rw-r--r-- | drivers/remoteproc/remoteproc_core.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index a0a5e32935bc..5abcd27a29f3 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -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; } } |