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remtoteproc: maintain max notifyid 

Some of the rproc drivers (STE modem specifically) needs to know
the range of the notification IDs used for notifying the device.

Maintain a variable in struct rproc holding the largest allocated
notification id, so low-level rproc drivers could access it.

Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
[ohad: rebase, slightly edit commit log]
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
This commit is contained in:
Sjur Brændeland 2012-09-18 20:32:45 +02:00 committed by Ohad Ben-Cohen
parent 2e37abb89a
commit 099a3f33c8
2 changed files with 17 additions and 0 deletions
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15
drivers/remoteproc/remoteproc_core.c
View File

@ -228,6 +228,9 @@ int rproc_alloc_vring(struct rproc_vdev *rvdev, int i)
return ret;
}
/* Store largest notifyid */
rproc->max_notifyid = max(rproc->max_notifyid, notifyid);
dev_dbg(dev, "vring%d: va %p dma %x size %x idr %d\n", i, va,
dma, size, notifyid);
@ -269,13 +272,25 @@ rproc_parse_vring(struct rproc_vdev *rvdev, struct fw_rsc_vdev *rsc, int i)
return 0;
}
static int rproc_max_notifyid(int id, void *p, void *data)
{
int *maxid = data;
*maxid = max(*maxid, id);
return 0;
}
void rproc_free_vring(struct rproc_vring *rvring)
{
int size = PAGE_ALIGN(vring_size(rvring->len, rvring->align));
struct rproc *rproc = rvring->rvdev->rproc;
int maxid = 0;
dma_free_coherent(rproc->dev.parent, size, rvring->va, rvring->dma);
idr_remove(&rproc->notifyids, rvring->notifyid);
/* Find the largest remaining notifyid */
idr_for_each(&rproc->notifyids, rproc_max_notifyid, &maxid);
rproc->max_notifyid = maxid;
}
/**

2
include/linux/remoteproc.h
View File

@ -400,6 +400,7 @@ enum rproc_crash_type {
* @crash_cnt: crash counter
* @crash_comp: completion used to sync crash handler and the rproc reload
* @recovery_disabled: flag that state if recovery was disabled
* @max_notifyid: largest allocated notify id.
*/
struct rproc {
struct klist_node node;
@ -427,6 +428,7 @@ struct rproc {
unsigned crash_cnt;
struct completion crash_comp;
bool recovery_disabled;
int max_notifyid;
};
/* we currently support only two vrings per rvdev */