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Subject[PATCH v2 9/9] firmware: arm_scmi: Call Raw mode hooks from the core stack
Date
Add a few call sites where, if SCMI Raw mode access had been enabled in
Kconfig, the needed SCMI Raw initialization and hooks are called.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
---
v1 --> v2
- fixes need to use multiple cinfo if available
---
drivers/firmware/arm_scmi/driver.c | 32 ++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)

diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index 7742581b94c7..1300aa9a9bfb 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -23,10 +23,12 @@
#include <linux/kernel.h>
#include <linux/ktime.h>
#include <linux/hashtable.h>
+#include <linux/fs.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/of_address.h>
#include <linux/of_device.h>
+#include <linux/poll.h>
#include <linux/processor.h>
#include <linux/refcount.h>
#include <linux/slab.h>
@@ -34,6 +36,8 @@
#include "common.h"
#include "notify.h"

+#include "raw_mode.h"
+
#define CREATE_TRACE_POINTS
#include <trace/events/scmi.h>

@@ -133,6 +137,7 @@ struct scmi_protocol_instance {
* @notify_priv: Pointer to private data structure specific to notifications.
* @node: List head
* @users: Number of users of this instance
+ * @raw: An opaque reference handle used by SCMI Raw mode.
*/
struct scmi_info {
struct device *dev;
@@ -152,6 +157,7 @@ struct scmi_info {
void *notify_priv;
struct list_head node;
int users;
+ void *raw;
};

#define handle_to_scmi_info(h) container_of(h, struct scmi_info, handle)
@@ -766,6 +772,11 @@ static void scmi_handle_notification(struct scmi_chan_info *cinfo,
xfer->hdr.protocol_id, xfer->hdr.seq,
MSG_TYPE_NOTIFICATION);

+ if (IS_ENABLED(CONFIG_ARM_SCMI_RAW_MODE_SUPPORT)) {
+ xfer->hdr.seq = MSG_XTRACT_TOKEN(msg_hdr);
+ scmi_raw_message_report(info->raw, xfer, SCMI_RAW_NOTIF_QUEUE);
+ }
+
__scmi_xfer_put(minfo, xfer);

scmi_clear_channel(info, cinfo);
@@ -779,6 +790,9 @@ static void scmi_handle_response(struct scmi_chan_info *cinfo,

xfer = scmi_xfer_command_acquire(cinfo, msg_hdr);
if (IS_ERR(xfer)) {
+ if (IS_ENABLED(CONFIG_ARM_SCMI_RAW_MODE_SUPPORT))
+ scmi_raw_error_report(info->raw, cinfo, msg_hdr, priv);
+
if (MSG_XTRACT_TYPE(msg_hdr) == MSG_TYPE_DELAYED_RESP)
scmi_clear_channel(info, cinfo);
return;
@@ -810,6 +824,9 @@ static void scmi_handle_response(struct scmi_chan_info *cinfo,
complete(&xfer->done);
}

+ if (IS_ENABLED(CONFIG_ARM_SCMI_RAW_MODE_SUPPORT))
+ scmi_raw_message_report(info->raw, xfer, SCMI_RAW_REPLY_QUEUE);
+
scmi_xfer_command_release(info, xfer);
}

@@ -2553,6 +2570,18 @@ static int scmi_probe(struct platform_device *pdev)
if (ret)
goto clear_txrx_setup;

+ if (IS_ENABLED(CONFIG_ARM_SCMI_RAW_MODE_SUPPORT)) {
+ info->raw = scmi_raw_mode_init(handle, info->desc,
+ info->tx_minfo.max_msg);
+ if (!IS_ERR(info->raw)) {
+ dev_info(dev, "SCMI RAW Mode initialized.\n");
+ return 0;
+ }
+
+ dev_err(dev, "Failed to initialize SCMI RAW Mode !\n");
+ info->raw = NULL;
+ }
+
if (scmi_notification_init(handle))
dev_err(dev, "SCMI Notifications NOT available.\n");

@@ -2626,6 +2655,9 @@ static int scmi_remove(struct platform_device *pdev)
struct scmi_info *info = platform_get_drvdata(pdev);
struct device_node *child;

+ if (IS_ENABLED(CONFIG_ARM_SCMI_RAW_MODE_SUPPORT))
+ scmi_raw_mode_cleanup(info->raw);
+
mutex_lock(&scmi_list_mutex);
if (info->users)
ret = -EBUSY;
--
2.32.0
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