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Commit 1429cca1 authored by Loic Pallardy's avatar Loic Pallardy Committed by Bjorn Andersson
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remoteproc: add helper function to allocate rproc_mem_entry from reserved memory 



This patch introduces rproc_res_mem_entry_init() helper function to
allocate a rproc_mem_entry structure from a reserved memory region.
In that case, rproc_mem_entry structure has no alloc and release ops.
It will be used to assigned the specified reserved memory to any
rproc sub device.
Relation between rproc_mem_entry and rproc sub device will be done
by name.

Signed-off-by: default avatarLoic Pallardy <loic.pallardy@st.com>
Signed-off-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
parent d7c51706

drivers/remoteproc/remoteproc_core.c

+37 −0
Original line number Diff line number Diff line
@@ -857,6 +857,7 @@ rproc_mem_entry_init(struct device *dev, 
	mem->alloc = alloc;

	mem->release = release;

	mem->rsc_offset = FW_RSC_ADDR_ANY;

	mem->of_resm_idx = -1;



	va_start(args, name);

	vsnprintf(mem->name, sizeof(mem->name), name, args);
@@ -866,6 +867,42 @@ rproc_mem_entry_init(struct device *dev, 
}

EXPORT_SYMBOL(rproc_mem_entry_init);



/**

 * rproc_of_resm_mem_entry_init() - allocate and initialize rproc_mem_entry struct

 * from a reserved memory phandle

 * @dev: pointer on device struct

 * @of_resm_idx: reserved memory phandle index in "memory-region"

 * @len: memory carveout length

 * @da: device address

 * @name: carveout name

 *

 * This function allocates a rproc_mem_entry struct and fill it with parameters

 * provided by client.

 */

struct rproc_mem_entry *

rproc_of_resm_mem_entry_init(struct device *dev, u32 of_resm_idx, int len,

			     u32 da, const char *name, ...)

{

	struct rproc_mem_entry *mem;

	va_list args;



	mem = kzalloc(sizeof(*mem), GFP_KERNEL);

	if (!mem)

		return mem;



	mem->da = da;

	mem->len = len;

	mem->rsc_offset = FW_RSC_ADDR_ANY;

	mem->of_resm_idx = of_resm_idx;



	va_start(args, name);

	vsnprintf(mem->name, sizeof(mem->name), name, args);

	va_end(args);



	return mem;

}

EXPORT_SYMBOL(rproc_of_resm_mem_entry_init);



/**

 * A lookup table for resource handlers. The indices are defined in

 * enum fw_resource_type.

include/linux/remoteproc.h

+6 −0
Original line number Diff line number Diff line
@@ -319,6 +319,7 @@ struct rproc; 
 * @node: list node

 * @rsc_offset: offset in resource table

 * @flags: iommu protection flags

 * @of_resm_idx: reserved memory phandle index

 * @alloc: specific memory allocator function

 */

struct rproc_mem_entry {
@@ -331,6 +332,7 @@ struct rproc_mem_entry { 
	struct list_head node;

	u32 rsc_offset;

	u32 flags;

	u32 of_resm_idx;

	int (*alloc)(struct rproc *rproc, struct rproc_mem_entry *mem);

	int (*release)(struct rproc *rproc, struct rproc_mem_entry *mem);

};
@@ -574,6 +576,10 @@ rproc_mem_entry_init(struct device *dev, 
		     int (*release)(struct rproc *, struct rproc_mem_entry *),

		     const char *name, ...);



struct rproc_mem_entry *

rproc_of_resm_mem_entry_init(struct device *dev, u32 of_resm_idx, int len,

			     u32 da, const char *name, ...);



int rproc_boot(struct rproc *rproc);

void rproc_shutdown(struct rproc *rproc);

void rproc_report_crash(struct rproc *rproc, enum rproc_crash_type type);