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[PATCH v2 11/19] remoteproc: core: Add function to get resource table spare bytes information

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Remoteproc needs to know if a resource table has spare resource
allowing resoure table extension.
This function parse resource table to detect spare resource.
If any, it returns available spare bytes and index of spare resource.

Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
---
 drivers/remoteproc/remoteproc_core.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index ffb56c0..30e9c70 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -951,6 +951,35 @@ int rproc_request_resource(struct rproc *rproc, u32 type, u32 action, void *reso
 }
 EXPORT_SYMBOL(rproc_request_resource);
 
+static int __get_rsc_tbl_spare_size(struct rproc *rproc,
+					  struct resource_table *table_ptr, int len,
+					  int *spare_index)
+{
+	struct device *dev = &rproc->dev;
+	int i;
+
+	for (i = 0; i < table_ptr->num; i++) {
+		int offset = table_ptr->offset[i];
+		struct fw_rsc_hdr *hdr = (void *)table_ptr + offset;
+		struct fw_rsc_spare *spare = (void *)hdr + sizeof(*hdr);
+
+		dev_dbg(dev, "rsc: type %d\n", hdr->type);
+
+		if (hdr->type >= RSC_LAST) {
+			dev_warn(dev, "unsupported resource %d\n", hdr->type);
+			continue;
+		}
+
+		if (hdr->type != RSC_SPARE)
+			continue;
+
+		*spare_index = i;
+		return spare->len;
+	}
+
+	return 0;
+}
+
 static int __verify_rsc_tbl_entry(struct rproc *rproc,
 				struct rproc_request_resource *request,
 				struct resource_table *table, int size)
-- 
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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