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Groups > linux.kernel > #1473865
| From | Loic Pallardy <loic.pallardy@st.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v2 03/19] remoteproc: core: Add function to amend an existing resource table entry |
| Date | 2016-08-31 23:00 +0200 |
| Message-ID | <sckM3-7eb-59@gated-at.bofh.it> (permalink) |
| References | <sckM1-7eb-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: Lee Jones <lee.jones@linaro.org>
Sometimes the firmware does not know best.
When a firmware is built, it can be loaded with a resource table, usually
detailing shared; memory, virtual device, trace log information etc.
However, some vendors require this hard-coded information to be amended
with new/improved information obtained from Device Tree for instance.
Until now, no method exists which allows the resource table to be amended.
The addition of this function changes that. It is now possible to pull in
a resource table and amend it before it is finally shared with the remote
device.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
---
drivers/remoteproc/remoteproc_core.c | 63 ++++++++++++++++++++++++++++++++++++
1 file changed, 63 insertions(+)
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 6c48c11..330ad4f 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -915,6 +915,69 @@ int rproc_request_resource(struct rproc *rproc, u32 type, void *resource)
}
EXPORT_SYMBOL(rproc_request_resource);
+static int rproc_update_resource_table_entry(struct rproc *rproc,
+ struct rproc_request_resource *request,
+ struct resource_table *table, int size)
+{
+ struct fw_rsc_carveout *tblc, *newc;
+ struct fw_rsc_devmem *tbld, *newd;
+ struct fw_rsc_trace *tblt, *newt;
+ int updated = true;
+ int i;
+
+ for (i = 0; i < table->num; i++) {
+ int offset = table->offset[i];
+ struct fw_rsc_hdr *hdr = (void *)table + offset;
+ void *rsc = (void *)hdr + sizeof(*hdr);
+
+ if (request->type != hdr->type)
+ continue;
+
+ switch (hdr->type) {
+ case RSC_CARVEOUT:
+ tblc = rsc;
+ newc = request->resource;
+
+ if (strncmp(newc->name, tblc->name,
+ sizeof(*tblc->name)))
+ break;
+
+ memcpy(tblc, newc, request->size);
+
+ return updated;
+ case RSC_DEVMEM:
+ tbld = rsc;
+ newd = request->resource;
+
+ if (strncmp(newd->name, tbld->name,
+ sizeof(*tbld->name)))
+ break;
+
+ memcpy(tbld, newd, request->size);
+
+ return updated;
+ case RSC_TRACE:
+ tblt = rsc;
+ newt = request->resource;
+
+ if (strncmp(newt->name, tblt->name,
+ sizeof(*tblt->name)))
+ break;
+
+ memcpy(tblt, newt, request->size);
+
+ return updated;
+ default:
+ dev_err(&rproc->dev,
+ "Unsupported resource type: %d\n",
+ hdr->type);
+ return -EINVAL;
+ }
+ }
+
+ return !updated;
+}
+
/*
* take a firmware and boot a remote processor with it.
*/
--
1.9.1
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[PATCH v2 00/19] remoteproc: Allow platform-specific drivers to request resources Loic Pallardy <loic.pallardy@st.com> - 2016-08-31 23:00 +0200
[PATCH v2 11/19] remoteproc: core: Add function to get resource table spare bytes information Loic Pallardy <loic.pallardy@st.com> - 2016-08-31 23:00 +0200
Re: [PATCH v2 11/19] remoteproc: core: Add function to get resource table spare bytes information Lee Jones <lee.jones@linaro.org> - 2016-09-08 10:40 +0200
Re: [PATCH v2 11/19] remoteproc: core: Add function to get resource table spare bytes information loic pallardy <loic.pallardy@st.com> - 2016-09-08 11:50 +0200
[PATCH v2 19/19] remoteproc: core: Support empty resource tables Loic Pallardy <loic.pallardy@st.com> - 2016-08-31 23:00 +0200
[PATCH v2 13/19] remoteproc: core: Append resource only if spare resource present Loic Pallardy <loic.pallardy@st.com> - 2016-08-31 23:00 +0200
Re: [PATCH v2 13/19] remoteproc: core: Append resource only if spare resource present Lee Jones <lee.jones@linaro.org> - 2016-09-08 11:40 +0200
Re: [PATCH v2 13/19] remoteproc: core: Append resource only if spare resource present loic pallardy <loic.pallardy@st.com> - 2016-09-08 12:00 +0200
Re: [PATCH v2 13/19] remoteproc: core: Append resource only if spare resource present Lee Jones <lee.jones@linaro.org> - 2016-09-08 13:00 +0200
[PATCH v2 01/19] remoteproc: core: New API to add new resources to the resource table Loic Pallardy <loic.pallardy@st.com> - 2016-08-31 23:00 +0200
[PATCH v2 17/19] remotecore: core: Add resource table pointer argument to rproc_handle_resource Loic Pallardy <loic.pallardy@st.com> - 2016-08-31 23:00 +0200
[PATCH v2 09/19] remoteproc: core: Finalize dump resource table function Loic Pallardy <loic.pallardy@st.com> - 2016-08-31 23:00 +0200
Re: [PATCH v2 09/19] remoteproc: core: Finalize dump resource table function Lee Jones <lee.jones@linaro.org> - 2016-09-08 10:30 +0200
Re: [PATCH v2 09/19] remoteproc: core: Finalize dump resource table function loic pallardy <loic.pallardy@st.com> - 2016-09-08 11:50 +0200
[PATCH v2 18/19] remoteproc: core: Add function to create remoteproc local resource table Loic Pallardy <loic.pallardy@st.com> - 2016-08-31 23:00 +0200
Re: [PATCH v2 18/19] remoteproc: core: Add function to create remoteproc local resource table Lee Jones <lee.jones@linaro.org> - 2016-09-08 12:20 +0200
Re: [PATCH v2 18/19] remoteproc: core: Add function to create remoteproc local resource table loic pallardy <loic.pallardy@st.com> - 2016-09-08 15:20 +0200
[PATCH v2 14/19] remoteproc: core: Add resource request action support Loic Pallardy <loic.pallardy@st.com> - 2016-08-31 23:00 +0200
[PATCH v2 03/19] remoteproc: core: Add function to amend an existing resource table entry Loic Pallardy <loic.pallardy@st.com> - 2016-08-31 23:00 +0200
[PATCH v2 02/19] remoteproc: core: Add function to dump resource table Loic Pallardy <loic.pallardy@st.com> - 2016-08-31 23:00 +0200
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