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remoteproc: Introduce rproc features

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remote processor may support:
 - boot recovery with help from main processor
 - self recovery without help from main processor
 - iommu
 - etc

Introduce rproc features could simplify code to avoid adding more bool
flags

Acked-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Link: https://lore.kernel.org/r/20220928064756.4059662-2-peng.fan@oss.nxp.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
This commit is contained in:
Peng Fan 2022-09-28 14:47:55 +08:00 committed by Mathieu Poirier
parent 1d7b61c06d
commit 49f27f2b4b
2 changed files with 31 additions and 0 deletions
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15
drivers/remoteproc/remoteproc_internal.h
View File

@ -39,6 +39,21 @@ struct rproc_vdev_data {
struct fw_rsc_vdev *rsc;
};
static inline bool rproc_has_feature(struct rproc *rproc, unsigned int feature)
{
return test_bit(feature, rproc->features);
}
static inline int rproc_set_feature(struct rproc *rproc, unsigned int feature)
{
if (feature >= RPROC_MAX_FEATURES)
return -EINVAL;
set_bit(feature, rproc->features);
return 0;
}
/* from remoteproc_core.c */
void rproc_release(struct kref *kref);
int rproc_of_parse_firmware(struct device *dev, int index,

16
include/linux/remoteproc.h
View File

@ -489,6 +489,20 @@ struct rproc_dump_segment {
loff_t offset;
};
/**
* enum rproc_features - features supported
*
* @RPROC_FEAT_ATTACH_ON_RECOVERY: The remote processor does not need help
* from Linux to recover, such as firmware
* loading. Linux just needs to attach after
* recovery.
*/
enum rproc_features {
RPROC_FEAT_ATTACH_ON_RECOVERY,
RPROC_MAX_FEATURES,
};
/**
* struct rproc - represents a physical remote processor device
* @node: list node of this rproc object
@ -530,6 +544,7 @@ struct rproc_dump_segment {
* @elf_machine: firmware ELF machine
* @cdev: character device of the rproc
* @cdev_put_on_release: flag to indicate if remoteproc should be shutdown on @char_dev release
* @features: indicate remoteproc features
*/
struct rproc {
struct list_head node;
@ -570,6 +585,7 @@ struct rproc {
u16 elf_machine;
struct cdev cdev;
bool cdev_put_on_release;
DECLARE_BITMAP(features, RPROC_MAX_FEATURES);
};
/**