From 1429cca1175f4cb64dd5d61ffd6037895a41d672 Mon Sep 17 00:00:00 2001 From: Loic Pallardy Date: Fri, 27 Jul 2018 15:14:44 +0200 Subject: 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: Loic Pallardy Signed-off-by: Bjorn Andersson --- drivers/remoteproc/remoteproc_core.c | 37 ++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) (limited to 'drivers/remoteproc') diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index 9d17b3079506..d7a623b8801c 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -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. -- cgit