Commit ef63464b authored by Luo Jiaxing's avatar Luo Jiaxing Committed by Martin K. Petersen
Browse files

scsi: hisi_sas: Create root and device debugfs directories 



This patch creates root directory at hisi_sas_init() and generates device
directory when we probe device driver.

And we remove the root directory at hisi_sas_exit(), but recursively
delete device directory when we remove device driver.

Signed-off-by: default avatarLuo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: default avatarJohn Garry <john.garry@huawei.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent ad796f79

drivers/scsi/hisi_sas/hisi_sas.h

+9 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ 


#include <linux/acpi.h>

#include <linux/clk.h>

#include <linux/debugfs.h>

#include <linux/dmapool.h>

#include <linux/iopoll.h>

#include <linux/lcm.h>
@@ -332,6 +333,8 @@ struct hisi_hba { 
	u32 phy_state;

	u32 intr_coal_ticks;	/* Time of interrupt coalesce in us */

	u32 intr_coal_count;	/* Interrupt count to coalesce */



	struct dentry *debugfs_dir;

};



/* Generic HW DMA host memory structures */
@@ -461,6 +464,10 @@ struct hisi_sas_slot_buf_table { 
};



extern struct scsi_transport_template *hisi_sas_stt;



extern bool hisi_sas_debugfs_enable;

extern struct dentry *hisi_sas_debugfs_dir;



extern void hisi_sas_stop_phys(struct hisi_hba *hisi_hba);

extern int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost);

extern void hisi_sas_free(struct hisi_hba *hisi_hba);
@@ -493,4 +500,6 @@ extern void hisi_sas_release_tasks(struct hisi_hba *hisi_hba); 
extern u8 hisi_sas_get_prog_phy_linkrate_mask(enum sas_linkrate max);

extern void hisi_sas_controller_reset_prepare(struct hisi_hba *hisi_hba);

extern void hisi_sas_controller_reset_done(struct hisi_hba *hisi_hba);

extern void hisi_sas_debugfs_init(struct hisi_hba *hisi_hba);

extern void hisi_sas_debugfs_exit(struct hisi_hba *hisi_hba);

#endif

drivers/scsi/hisi_sas/hisi_sas_main.c

+27 −0
Original line number Diff line number Diff line
@@ -2457,6 +2457,23 @@ err_out_ha: 
}

EXPORT_SYMBOL_GPL(hisi_sas_probe);



struct dentry *hisi_sas_debugfs_dir;



void hisi_sas_debugfs_init(struct hisi_hba *hisi_hba)

{

	struct device *dev = hisi_hba->dev;



	hisi_hba->debugfs_dir = debugfs_create_dir(dev_name(dev),

						   hisi_sas_debugfs_dir);

}

EXPORT_SYMBOL_GPL(hisi_sas_debugfs_init);



void hisi_sas_debugfs_exit(struct hisi_hba *hisi_hba)

{

	debugfs_remove_recursive(hisi_hba->debugfs_dir);

}

EXPORT_SYMBOL_GPL(hisi_sas_debugfs_exit);



int hisi_sas_remove(struct platform_device *pdev)

{

	struct sas_ha_struct *sha = platform_get_drvdata(pdev);
@@ -2475,18 +2492,28 @@ int hisi_sas_remove(struct platform_device *pdev) 
}

EXPORT_SYMBOL_GPL(hisi_sas_remove);



bool hisi_sas_debugfs_enable;

EXPORT_SYMBOL_GPL(hisi_sas_debugfs_enable);

module_param_named(debugfs_enable, hisi_sas_debugfs_enable, bool, 0444);

MODULE_PARM_DESC(hisi_sas_debugfs_enable, "Enable driver debugfs (default disabled)");



static __init int hisi_sas_init(void)

{

	hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops);

	if (!hisi_sas_stt)

		return -ENOMEM;



	if (hisi_sas_debugfs_enable)

		hisi_sas_debugfs_dir = debugfs_create_dir("hisi_sas", NULL);



	return 0;

}



static __exit void hisi_sas_exit(void)

{

	sas_release_transport(hisi_sas_stt);



	debugfs_remove(hisi_sas_debugfs_dir);

}



module_init(hisi_sas_init);

drivers/scsi/hisi_sas/hisi_sas_v3_hw.c

+5 −0
Original line number Diff line number Diff line
@@ -2507,6 +2507,9 @@ hisi_sas_v3_probe(struct pci_dev *pdev, const struct pci_device_id *id) 
		sha->sas_port[i] = &hisi_hba->port[i].sas_port;

	}



	if (hisi_sas_debugfs_enable)

		hisi_sas_debugfs_init(hisi_hba);



	rc = scsi_add_host(shost, dev);

	if (rc)

		goto err_out_ha;
@@ -2565,6 +2568,8 @@ static void hisi_sas_v3_remove(struct pci_dev *pdev) 
	struct hisi_hba *hisi_hba = sha->lldd_ha;

	struct Scsi_Host *shost = sha->core.shost;



	hisi_sas_debugfs_exit(hisi_hba);



	if (timer_pending(&hisi_hba->timer))

		del_timer(&hisi_hba->timer);

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