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remoteproc: Introduce auto-boot flag 

Introduce an "auto-boot" flag on rprocs to make it possible to flag
remote processors without vdevs to automatically boot once the firmware
is found.

Preserve previous behavior of the wkup_m3 processor being explicitly
booted by a consumer.

Cc: Lee Jones <lee.jones@linaro.org>
Cc: Loic Pallardy <loic.pallardy@st.com>
Cc: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Bjorn Andersson 2016-08-11 14:52:50 -07:00
parent 14096c13ef
commit ddf711872c
4 changed files with 30 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/remoteproc/remoteproc_core.c
View File

@ -932,6 +932,10 @@ static void rproc_fw_config_virtio(const struct firmware *fw, void *context)
/* look for virtio devices and register them */
ret = rproc_handle_resources(rproc, tablesz, rproc_vdev_handler);
/* if rproc is marked always-on, request it to boot */
if (rproc->auto_boot)
rproc_boot_nowait(rproc);
out:
release_firmware(fw);
/* allow rproc_del() contexts, if any, to proceed */
@ -977,11 +981,16 @@ static int rproc_add_virtio_devices(struct rproc *rproc)
int rproc_trigger_recovery(struct rproc *rproc)
{
struct rproc_vdev *rvdev, *rvtmp;
int ret;
dev_err(&rproc->dev, "recovering %s\n", rproc->name);
init_completion(&rproc->crash_comp);
/* shut down the remote */
/* TODO: make sure this works with rproc->power > 1 */
rproc_shutdown(rproc);
/* clean up remote vdev entries */
list_for_each_entry_safe(rvdev, rvtmp, &rproc->rvdevs, node)
rproc_remove_virtio_dev(rvdev);
@ -992,7 +1001,18 @@ int rproc_trigger_recovery(struct rproc *rproc)
/* Free the copy of the resource table */
kfree(rproc->cached_table);
return rproc_add_virtio_devices(rproc);
ret = rproc_add_virtio_devices(rproc);
if (ret)
return ret;
/*
* boot the remote processor up again, if the async firmware loader
* didn't do so already, waiting for the async fw load to finish
*/
if (!rproc->auto_boot)
rproc_boot(rproc);
return 0;
}
/**
@ -1373,6 +1393,7 @@ struct rproc *rproc_alloc(struct device *dev, const char *name,
rproc->name = name;
rproc->ops = ops;
rproc->priv = &rproc[1];
rproc->auto_boot = true;
device_initialize(&rproc->dev);
rproc->dev.parent = dev;
@ -1451,6 +1472,11 @@ int rproc_del(struct rproc *rproc)
/* if rproc is just being registered, wait */
wait_for_completion(&rproc->firmware_loading_complete);
/* if rproc is marked always-on, rproc_add() booted it */
/* TODO: make sure this works with rproc->power > 1 */
if (rproc->auto_boot)
rproc_shutdown(rproc);
/* clean up remote vdev entries */
list_for_each_entry_safe(rvdev, tmp, &rproc->rvdevs, node)
rproc_remove_virtio_dev(rvdev);

13
drivers/remoteproc/remoteproc_virtio.c
View File

@ -136,11 +136,6 @@ static void __rproc_virtio_del_vqs(struct virtio_device *vdev)
static void rproc_virtio_del_vqs(struct virtio_device *vdev)
{
struct rproc *rproc = vdev_to_rproc(vdev);
/* power down the remote processor before deleting vqs */
rproc_shutdown(rproc);
__rproc_virtio_del_vqs(vdev);
}
@ -149,7 +144,6 @@ static int rproc_virtio_find_vqs(struct virtio_device *vdev, unsigned int nvqs,
vq_callback_t *callbacks[],
const char * const names[])
{
struct rproc *rproc = vdev_to_rproc(vdev);
int i, ret;
for (i = 0; i < nvqs; ++i) {
@ -160,13 +154,6 @@ static int rproc_virtio_find_vqs(struct virtio_device *vdev, unsigned int nvqs,
}
}
/* now that the vqs are all set, boot the remote processor */
ret = rproc_boot_nowait(rproc);
if (ret) {
dev_err(&rproc->dev, "rproc_boot() failed %d\n", ret);
goto error;
}
return 0;
error:

2
drivers/remoteproc/wkup_m3_rproc.c
View File

@ -167,6 +167,8 @@ static int wkup_m3_rproc_probe(struct platform_device *pdev)
goto err;
}
rproc->auto_boot = false;
wkupm3 = rproc->priv;
wkupm3->rproc = rproc;
wkupm3->pdev = pdev;

1
include/linux/remoteproc.h
View File

@ -443,6 +443,7 @@ struct rproc {
struct resource_table *cached_table;
u32 table_csum;
bool has_iommu;
bool auto_boot;
};
/* we currently support only two vrings per rvdev */