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remoteproc: imx_rproc: add i.MX specific parse fw hook

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The hook is used to parse memory-regions and load resource table
from the address the remote processor published.

Reviewed-by: Richard Zhu <hongxing.zhu@nxp.com>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Link: https://lore.kernel.org/r/1615029865-23312-8-git-send-email-peng.fan@oss.nxp.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Peng Fan 2021-03-06 19:24:22 +08:00 committed by Bjorn Andersson
parent ecadcc4749
commit b29b4249f8
1 changed files with 93 additions and 0 deletions
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93
drivers/remoteproc/imx_rproc.c
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@ -10,6 +10,7 @@
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/of_address.h>
#include <linux/of_reserved_mem.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
@ -241,10 +242,102 @@ static void *imx_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *i
return va;
}
static int imx_rproc_mem_alloc(struct rproc *rproc,
struct rproc_mem_entry *mem)
{
struct device *dev = rproc->dev.parent;
void *va;
dev_dbg(dev, "map memory: %p+%zx\n", &mem->dma, mem->len);
va = ioremap_wc(mem->dma, mem->len);
if (IS_ERR_OR_NULL(va)) {
dev_err(dev, "Unable to map memory region: %p+%zx\n",
&mem->dma, mem->len);
return -ENOMEM;
}
/* Update memory entry va */
mem->va = va;
return 0;
}
static int imx_rproc_mem_release(struct rproc *rproc,
struct rproc_mem_entry *mem)
{
dev_dbg(rproc->dev.parent, "unmap memory: %pa\n", &mem->dma);
iounmap(mem->va);
return 0;
}
static int imx_rproc_parse_memory_regions(struct rproc *rproc)
{
struct imx_rproc *priv = rproc->priv;
struct device_node *np = priv->dev->of_node;
struct of_phandle_iterator it;
struct rproc_mem_entry *mem;
struct reserved_mem *rmem;
u32 da;
/* Register associated reserved memory regions */
of_phandle_iterator_init(&it, np, "memory-region", NULL, 0);
while (of_phandle_iterator_next(&it) == 0) {
/*
* Ignore the first memory region which will be used vdev buffer.
* No need to do extra handlings, rproc_add_virtio_dev will handle it.
*/
if (!strcmp(it.node->name, "vdev0buffer"))
continue;
rmem = of_reserved_mem_lookup(it.node);
if (!rmem) {
dev_err(priv->dev, "unable to acquire memory-region\n");
return -EINVAL;
}
/* No need to translate pa to da, i.MX use same map */
da = rmem->base;
/* Register memory region */
mem = rproc_mem_entry_init(priv->dev, NULL, (dma_addr_t)rmem->base, rmem->size, da,
imx_rproc_mem_alloc, imx_rproc_mem_release,
it.node->name);
if (mem)
rproc_coredump_add_segment(rproc, da, rmem->size);
else
return -ENOMEM;
rproc_add_carveout(rproc, mem);
}
return 0;
}
static int imx_rproc_parse_fw(struct rproc *rproc, const struct firmware *fw)
{
int ret = imx_rproc_parse_memory_regions(rproc);
if (ret)
return ret;
ret = rproc_elf_load_rsc_table(rproc, fw);
if (ret)
dev_info(&rproc->dev, "No resource table in elf\n");
return 0;
}
static const struct rproc_ops imx_rproc_ops = {
.start = imx_rproc_start,
.stop = imx_rproc_stop,
.da_to_va = imx_rproc_da_to_va,
.load = rproc_elf_load_segments,
.parse_fw = imx_rproc_parse_fw,
.find_loaded_rsc_table = rproc_elf_find_loaded_rsc_table,
.sanity_check = rproc_elf_sanity_check,
.get_boot_addr = rproc_elf_get_boot_addr,
};
static int imx_rproc_addr_init(struct imx_rproc *priv,