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Commit 78370137 authored by Yan He's avatar Yan He Committed by Gerrit - the friendly Code Review server
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mhi_dev: mhi: Add IPC logging to MHI device driver 



Add the IPC logging to MHI device driver to improve the debugging
capability.

Change-Id: Idfb56d46df0f8348925d8edf71a078b0e7ea6961
Signed-off-by: default avatarYan He <yanhe@codeaurora.org>
parent 2764e6c9

drivers/platform/msm/mhi_dev/mhi.c

+13 −0
Original line number Diff line number Diff line
@@ -60,7 +60,10 @@ 
#define HOST_ADDR_LSB(addr)		(addr & 0xFFFFFFFF)

#define HOST_ADDR_MSB(addr)		((addr >> 32) & 0xFFFFFFFF)



#define MHI_IPC_LOG_PAGES		(100)

enum mhi_msg_level mhi_msg_lvl = MHI_MSG_ERROR;

enum mhi_msg_level mhi_ipc_msg_lvl = MHI_MSG_VERBOSE;

void *mhi_ipc_log;



static struct mhi_dev *mhi_ctx;

static void mhi_hwc_cb(void *priv, enum ipa_mhi_event_type event,
@@ -1822,6 +1825,13 @@ static int mhi_init(struct mhi_dev *mhi) 
		return -ENOMEM;

	}



	mhi_ipc_log = ipc_log_context_create(MHI_IPC_LOG_PAGES, "mhi");



	if (mhi_ipc_log == NULL) {

		dev_err(&pdev->dev,

				"Failed to create IPC logging context\n");

	}



	return 0;

}
@@ -1880,7 +1890,10 @@ static struct platform_driver mhi_dev_driver = { 
};



module_param(mhi_msg_lvl , uint, S_IRUGO | S_IWUSR);

module_param(mhi_ipc_msg_lvl, uint, S_IRUGO | S_IWUSR);



MODULE_PARM_DESC(mhi_msg_lvl, "mhi msg lvl");

MODULE_PARM_DESC(mhi_ipc_msg_lvl, "mhi ipc msg lvl");



static int __init mhi_dev_init(void)

{

drivers/platform/msm/mhi_dev/mhi.h

+7 −0
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ 


#include <linux/msm_ep_pcie.h>

#include <linux/types.h>

#include <linux/ipc_logging.h>



/* MHI control data structures alloted by the host, including

 * channel context array, event context array, command context and rings */
@@ -513,11 +514,17 @@ enum mhi_msg_level { 
};



extern enum mhi_msg_level mhi_msg_lvl;

extern enum mhi_msg_level mhi_ipc_msg_lvl;

extern void *mhi_ipc_log;



#define mhi_log(_msg_lvl, _msg, ...) do { \

	if (_msg_lvl >= mhi_msg_lvl) { \

		pr_err("[%s] "_msg, __func__, ##__VA_ARGS__); \

	} \

	if (mhi_ipc_log && (_msg_lvl >= mhi_ipc_msg_lvl)) { \

		ipc_log_string(mhi_ipc_log,                     \

			"[%s] " _msg, __func__, ##__VA_ARGS__);     \

	} \

} while (0)



/* SW channel client list */