Commit 172614a9 authored by Stanley Chu's avatar Stanley Chu Committed by Martin K. Petersen
Browse files

scsi: ufs: Introduce event_notify variant function 

Introduce event_notify variant function to allow vendor to get notification
of important events and connect to any proprietary debugging facilities.

Link: https://lore.kernel.org/r/20201205115901.26815-4-stanley.chu@mediatek.com


Reviewed-by: default avatarAsutosh Das <asutoshd@codeaurora.org>
Reviewed-by: default avatarCan Guo <cang@codeaurora.org>
Signed-off-by: default avatarStanley Chu <stanley.chu@mediatek.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent e965e5e0

drivers/scsi/ufs/ufshcd.c

+2 −0
Original line number Diff line number Diff line
@@ -4480,6 +4480,8 @@ void ufshcd_update_evt_hist(struct ufs_hba *hba, u32 id, u32 val) 
	e->val[e->pos] = val;

	e->tstamp[e->pos] = ktime_get();

	e->pos = (e->pos + 1) % UFS_EVENT_HIST_LENGTH;



	ufshcd_vops_event_notify(hba, id, &val);

}

EXPORT_SYMBOL_GPL(ufshcd_update_evt_hist);

drivers/scsi/ufs/ufshcd.h

+11 −0
Original line number Diff line number Diff line
@@ -320,6 +320,7 @@ struct ufs_pwr_mode_info { 
 * @phy_initialization: used to initialize phys

 * @device_reset: called to issue a reset pulse on the UFS device

 * @program_key: program or evict an inline encryption key

 * @event_notify: called to notify important events

 */

struct ufs_hba_variant_ops {

	const char *name;
@@ -355,6 +356,8 @@ struct ufs_hba_variant_ops { 
					void *data);

	int	(*program_key)(struct ufs_hba *hba,

			       const union ufs_crypto_cfg_entry *cfg, int slot);

	void	(*event_notify)(struct ufs_hba *hba,

				enum ufs_event_type evt, void *data);

};



/* clock gating state  */
@@ -1102,6 +1105,14 @@ static inline int ufshcd_vops_clk_scale_notify(struct ufs_hba *hba, 
	return 0;

}



static inline void ufshcd_vops_event_notify(struct ufs_hba *hba,

					    enum ufs_event_type evt,

					    void *data)

{

	if (hba->vops && hba->vops->event_notify)

		hba->vops->event_notify(hba, evt, data);

}



static inline int ufshcd_vops_setup_clocks(struct ufs_hba *hba, bool on,

					enum ufs_notify_change_status status)

{