From: Loic Pallardy <loic.pallardy@st.com>
To: <bjorn.andersson@linaro.org>, <ohad@wizery.com>
Cc: <linux-remoteproc@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <arnaud.pouliquen@st.com>,
<benjamin.gaignard@linaro.org>,
Loic Pallardy <loic.pallardy@st.com>
Subject: [PATCH v3 08/13] remoteproc: add prepare and unprepare ops
Date: Thu, 1 Mar 2018 17:23:55 +0100 [thread overview]
Message-ID: <1519921440-21356-9-git-send-email-loic.pallardy@st.com> (raw)
In-Reply-To: <1519921440-21356-1-git-send-email-loic.pallardy@st.com>
On some SoC architecture, it is needed to enable HW like
clock, bus, regulator, memory region... before loading
co-processor firmware.
This patch introduces prepare and unprepare ops to execute
platform specific function before firmware loading and after
stop execution.
Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
---
drivers/remoteproc/remoteproc_core.c | 20 +++++++++++++++++++-
include/linux/remoteproc.h | 4 ++++
2 files changed, 23 insertions(+), 1 deletion(-)
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 7a500cb..0ebbc4f 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -1058,12 +1058,22 @@ static int rproc_fw_boot(struct rproc *rproc, const struct firmware *fw)
return ret;
}
+ /* Prepare rproc for firmware loading if needed */
+ if (rproc->ops->prepare) {
+ ret = rproc->ops->prepare(rproc);
+ if (ret) {
+ dev_err(dev, "can't prepare rproc %s: %d\n",
+ rproc->name, ret);
+ goto disable_iommu;
+ }
+ }
+
rproc->bootaddr = rproc_get_boot_addr(rproc, fw);
/* load resource table */
ret = rproc_load_rsc_table(rproc, fw);
if (ret)
- goto disable_iommu;
+ goto unprepare_rproc;
/* reset max_notifyid */
rproc->max_notifyid = -1;
@@ -1086,6 +1096,10 @@ static int rproc_fw_boot(struct rproc *rproc, const struct firmware *fw)
kfree(rproc->cached_table);
rproc->cached_table = NULL;
rproc->table_ptr = NULL;
+unprepare_rproc:
+ /* release HW resources if needed */
+ if (rproc->ops->unprepare)
+ rproc->ops->unprepare(rproc);
disable_iommu:
rproc_disable_iommu(rproc);
return ret;
@@ -1331,6 +1345,10 @@ void rproc_shutdown(struct rproc *rproc)
/* clean up all acquired resources */
rproc_resource_cleanup(rproc);
+ /* release HW resources if needed */
+ if (rproc->ops->unprepare)
+ rproc->ops->unprepare(rproc);
+
rproc_disable_iommu(rproc);
/* Free the copy of the resource table */
diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
index 4aa30bd..dcfa601 100644
--- a/include/linux/remoteproc.h
+++ b/include/linux/remoteproc.h
@@ -333,6 +333,8 @@ struct rproc_mem_entry {
/**
* struct rproc_ops - platform-specific device handlers
+ * @prepare: prepare device for code loading
+ * @unprepare: unprepare device after stop
* @start: power on the device and boot it
* @stop: power off the device
* @kick: kick a virtqueue (virtqueue id given as a parameter)
@@ -345,6 +347,8 @@ struct rproc_mem_entry {
* @get_boot_addr: get boot address to entry point specified in firmware
*/
struct rproc_ops {
+ int (*prepare)(struct rproc *rproc);
+ int (*unprepare)(struct rproc *rproc);
int (*start)(struct rproc *rproc);
int (*stop)(struct rproc *rproc);
void (*kick)(struct rproc *rproc, int vqid);
--
1.9.1
next prev parent reply other threads:[~2018-03-01 16:26 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-01 16:23 [PATCH v3 00/13] remoteproc: add fixed memory region support Loic Pallardy
2018-03-01 16:23 ` [PATCH v3 01/13] remoteproc: configure IOMMU only if device address requested Loic Pallardy
2018-03-01 16:23 ` [PATCH v3 02/13] remoteproc: add rproc_va_to_pa function Loic Pallardy
2018-05-10 0:11 ` Bjorn Andersson
2018-03-01 16:23 ` [PATCH v3 03/13] remoteproc: add release ops in rproc_mem_entry struct Loic Pallardy
2018-05-10 0:53 ` Bjorn Andersson
2018-03-01 16:23 ` [PATCH v3 04/13] remoteproc: add name " Loic Pallardy
2018-05-10 0:12 ` Bjorn Andersson
2018-03-01 16:23 ` [PATCH v3 05/13] remoteproc: add helper function to allocate and init " Loic Pallardy
2018-03-01 16:23 ` [PATCH v3 06/13] remoteproc: introduce rproc_add_carveout function Loic Pallardy
2018-05-10 0:56 ` Bjorn Andersson
2018-03-01 16:23 ` [PATCH v3 07/13] remoteproc: introduce rproc_find_carveout_by_name function Loic Pallardy
2018-05-10 0:19 ` Bjorn Andersson
2018-05-14 14:40 ` Loic PALLARDY
2018-03-01 16:23 ` Loic Pallardy [this message]
2018-05-10 0:52 ` [PATCH v3 08/13] remoteproc: add prepare and unprepare ops Bjorn Andersson
2018-05-14 15:03 ` Loic PALLARDY
2018-10-24 3:12 ` Suman Anna
2018-03-01 16:23 ` [PATCH v3 09/13] remoteproc: modify rproc_handle_carveout to support pre-registered region Loic Pallardy
2018-05-10 0:42 ` Bjorn Andersson
2018-05-14 14:52 ` Loic PALLARDY
2018-03-01 16:23 ` [PATCH v3 10/13] remoteproc: modify vring allocation " Loic Pallardy
2018-05-10 0:59 ` Bjorn Andersson
2018-05-14 15:43 ` Loic PALLARDY
2018-03-01 16:23 ` [PATCH v3 11/13] remoteproc: create vdev subdevice with specific dma memory pool Loic Pallardy
2018-05-10 1:06 ` Bjorn Andersson
2018-05-14 15:57 ` Loic PALLARDY
2018-03-01 16:23 ` [PATCH v3 12/13] rpmsg: virtio: allocate buffer from parent Loic Pallardy
2018-03-01 16:24 ` [PATCH v3 13/13] remoteproc: st: add reserved memory support Loic Pallardy
2018-04-03 12:04 ` [PATCH v3 00/13] remoteproc: add fixed memory region support Loic PALLARDY
2018-06-25 3:23 ` Anup Patel
2018-06-26 8:17 ` Loic PALLARDY
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