linux-kernel - [RFC 01/18] remoteproc: Store resource table address in rvdev

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Message-ID: <20200416161331.7606-2-arnaud.pouliquen@st.com>
Date:   Thu, 16 Apr 2020 18:13:14 +0200
From:   Arnaud Pouliquen <arnaud.pouliquen@...com>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Ohad Ben-Cohen <ohad@...ery.com>,
        Mathieu Poirier <mathieu.poirier@...aro.org>
CC:     <linux-remoteproc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <arnaud.pouliquen@...com>
Subject: [RFC 01/18] remoteproc: Store resource table address in rvdev

Store the resource table address in rvdev struct to be able to
retrieve it from vdev device.
This patch prepares the migration of rdev management in rproc_virtio.
Indeed remoteproc virtio will have to complete the vdev and vrings
resource table structures.

Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@...com>
---
 drivers/remoteproc/remoteproc_core.c | 1 +
 include/linux/remoteproc.h           | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 097f33e4f1f3..2a0425ab82a7 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -504,6 +504,7 @@ static int rproc_handle_vdev(struct rproc *rproc, struct fw_rsc_vdev *rsc,
 
 	kref_init(&rvdev->refcount);
 
+	rvdev->rsc = rsc;
 	rvdev->id = rsc->id;
 	rvdev->rproc = rproc;
 	rvdev->index = rproc->nb_vdev++;
diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
index 16ad66683ad0..a78e28bda962 100644
--- a/include/linux/remoteproc.h
+++ b/include/linux/remoteproc.h
@@ -567,6 +567,7 @@ struct rproc_vring {
  * @rproc: the rproc handle
  * @vdev: the virio device
  * @vring: the vrings for this vdev
+ * @rsc: address of the resource table
  * @rsc_offset: offset of the vdev's resource entry
  * @index: vdev position versus other vdev declared in resource table
  */
@@ -580,6 +581,7 @@ struct rproc_vdev {
 	struct list_head node;
 	struct rproc *rproc;
 	struct rproc_vring vring[RVDEV_NUM_VRINGS];
+	struct fw_rsc_vdev *rsc;
 	u32 rsc_offset;
 	u32 index;
 };
-- 
2.17.1