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Commit a0123703 authored by Tejun Heo's avatar Tejun Heo Committed by Jeff Garzik
Browse files

[PATCH] libata: use ata_exec_internal() 



This patch converts all users of libata internal commands to use
ata_exec_internal().

Signed-off-by: default avatarTejun Heo <htejun@gmail.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@pobox.com>
parent a2a7a662

drivers/scsi/libata-core.c

+44 −101
Original line number Diff line number Diff line
@@ -1198,9 +1198,8 @@ static void ata_dev_identify(struct ata_port *ap, unsigned int device) 
	u16 tmp;

	unsigned long xfer_modes;

	unsigned int using_edd;

	DECLARE_COMPLETION(wait);

	struct ata_queued_cmd *qc;

	unsigned long flags;

	struct ata_taskfile tf;

	unsigned int err_mask;

	int rc;



	if (!ata_dev_present(dev)) {
@@ -1221,40 +1220,26 @@ static void ata_dev_identify(struct ata_port *ap, unsigned int device) 


	ata_dev_select(ap, device, 1, 1); /* select device 0/1 */



	qc = ata_qc_new_init(ap, dev);

	BUG_ON(qc == NULL);



	ata_sg_init_one(qc, dev->id, sizeof(dev->id));

	qc->dma_dir = DMA_FROM_DEVICE;

	qc->tf.protocol = ATA_PROT_PIO;

	qc->nsect = 1;



retry:

	ata_tf_init(ap, &tf, device);



	if (dev->class == ATA_DEV_ATA) {

		qc->tf.command = ATA_CMD_ID_ATA;

		tf.command = ATA_CMD_ID_ATA;

		DPRINTK("do ATA identify\n");

	} else {

		qc->tf.command = ATA_CMD_ID_ATAPI;

		tf.command = ATA_CMD_ID_ATAPI;

		DPRINTK("do ATAPI identify\n");

	}



	qc->waiting = &wait;

	qc->complete_fn = ata_qc_complete_noop;

	tf.protocol = ATA_PROT_PIO;



	spin_lock_irqsave(&ap->host_set->lock, flags);

	rc = ata_qc_issue(qc);

	spin_unlock_irqrestore(&ap->host_set->lock, flags);

	err_mask = ata_exec_internal(ap, dev, &tf, DMA_FROM_DEVICE,

				     dev->id, sizeof(dev->id));



	if (rc)

	if (err_mask) {

		if (err_mask & ~AC_ERR_DEV)

			goto err_out;

	else

		ata_qc_wait_err(qc, &wait);



	spin_lock_irqsave(&ap->host_set->lock, flags);

	ap->ops->tf_read(ap, &qc->tf);

	spin_unlock_irqrestore(&ap->host_set->lock, flags);



	if (qc->tf.command & ATA_ERR) {

		/*

		 * arg!  EDD works for all test cases, but seems to return

		 * the ATA signature for some ATAPI devices.  Until the
@@ -1267,14 +1252,9 @@ static void ata_dev_identify(struct ata_port *ap, unsigned int device) 
		 * to have this problem.

		 */

		if ((using_edd) && (dev->class == ATA_DEV_ATA)) {

			u8 err = qc->tf.feature;

			u8 err = tf.feature;

			if (err & ATA_ABORTED) {

				dev->class = ATA_DEV_ATAPI;

				qc->cursg = 0;

				qc->cursg_ofs = 0;

				qc->cursect = 0;

				qc->nsect = 1;

				qc->err_mask = 0;

				goto retry;

			}

		}
@@ -2378,34 +2358,23 @@ static int ata_choose_xfer_mode(const struct ata_port *ap, 


static void ata_dev_set_xfermode(struct ata_port *ap, struct ata_device *dev)

{

	DECLARE_COMPLETION(wait);

	struct ata_queued_cmd *qc;

	int rc;

	unsigned long flags;

	struct ata_taskfile tf;



	/* set up set-features taskfile */

	DPRINTK("set features - xfer mode\n");



	qc = ata_qc_new_init(ap, dev);

	BUG_ON(qc == NULL);



	qc->tf.command = ATA_CMD_SET_FEATURES;

	qc->tf.feature = SETFEATURES_XFER;

	qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;

	qc->tf.protocol = ATA_PROT_NODATA;

	qc->tf.nsect = dev->xfer_mode;



	qc->waiting = &wait;

	qc->complete_fn = ata_qc_complete_noop;



	spin_lock_irqsave(&ap->host_set->lock, flags);

	rc = ata_qc_issue(qc);

	spin_unlock_irqrestore(&ap->host_set->lock, flags);

	ata_tf_init(ap, &tf, dev->devno);

	tf.command = ATA_CMD_SET_FEATURES;

	tf.feature = SETFEATURES_XFER;

	tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;

	tf.protocol = ATA_PROT_NODATA;

	tf.nsect = dev->xfer_mode;



	if (rc)

	if (ata_exec_internal(ap, dev, &tf, DMA_NONE, NULL, 0)) {

		printk(KERN_ERR "ata%u: failed to set xfermode, disabled\n",

		       ap->id);

		ata_port_disable(ap);

	else

		ata_qc_wait_err(qc, &wait);

	}



	DPRINTK("EXIT\n");

}
@@ -2420,41 +2389,25 @@ static void ata_dev_set_xfermode(struct ata_port *ap, struct ata_device *dev) 


static void ata_dev_reread_id(struct ata_port *ap, struct ata_device *dev)

{

	DECLARE_COMPLETION(wait);

	struct ata_queued_cmd *qc;

	unsigned long flags;

	int rc;



	qc = ata_qc_new_init(ap, dev);

	BUG_ON(qc == NULL);

	struct ata_taskfile tf;



	ata_sg_init_one(qc, dev->id, sizeof(dev->id));

	qc->dma_dir = DMA_FROM_DEVICE;

	ata_tf_init(ap, &tf, dev->devno);



	if (dev->class == ATA_DEV_ATA) {

		qc->tf.command = ATA_CMD_ID_ATA;

		tf.command = ATA_CMD_ID_ATA;

		DPRINTK("do ATA identify\n");

	} else {

		qc->tf.command = ATA_CMD_ID_ATAPI;

		tf.command = ATA_CMD_ID_ATAPI;

		DPRINTK("do ATAPI identify\n");

	}



	qc->tf.flags |= ATA_TFLAG_DEVICE;

	qc->tf.protocol = ATA_PROT_PIO;

	qc->nsect = 1;



	qc->waiting = &wait;

	qc->complete_fn = ata_qc_complete_noop;



	spin_lock_irqsave(&ap->host_set->lock, flags);

	rc = ata_qc_issue(qc);

	spin_unlock_irqrestore(&ap->host_set->lock, flags);

	tf.flags |= ATA_TFLAG_DEVICE;

	tf.protocol = ATA_PROT_PIO;



	if (rc)

	if (ata_exec_internal(ap, dev, &tf, DMA_FROM_DEVICE,

			      dev->id, sizeof(dev->id)))

		goto err_out;



	ata_qc_wait_err(qc, &wait);



	swap_buf_le16(dev->id, ATA_ID_WORDS);



	ata_dump_id(dev);
@@ -2463,6 +2416,7 @@ static void ata_dev_reread_id(struct ata_port *ap, struct ata_device *dev) 


	return;

err_out:

	printk(KERN_ERR "ata%u: failed to reread ID, disabled\n", ap->id);

	ata_port_disable(ap);

}
@@ -2476,10 +2430,7 @@ static void ata_dev_reread_id(struct ata_port *ap, struct ata_device *dev) 


static void ata_dev_init_params(struct ata_port *ap, struct ata_device *dev)

{

	DECLARE_COMPLETION(wait);

	struct ata_queued_cmd *qc;

	int rc;

	unsigned long flags;

	struct ata_taskfile tf;

	u16 sectors = dev->id[6];

	u16 heads   = dev->id[3];
@@ -2490,26 +2441,18 @@ static void ata_dev_init_params(struct ata_port *ap, struct ata_device *dev) 
	/* set up init dev params taskfile */

	DPRINTK("init dev params \n");



	qc = ata_qc_new_init(ap, dev);

	BUG_ON(qc == NULL);



	qc->tf.command = ATA_CMD_INIT_DEV_PARAMS;

	qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;

	qc->tf.protocol = ATA_PROT_NODATA;

	qc->tf.nsect = sectors;

	qc->tf.device |= (heads - 1) & 0x0f; /* max head = num. of heads - 1 */



	qc->waiting = &wait;

	qc->complete_fn = ata_qc_complete_noop;



	spin_lock_irqsave(&ap->host_set->lock, flags);

	rc = ata_qc_issue(qc);

	spin_unlock_irqrestore(&ap->host_set->lock, flags);

	ata_tf_init(ap, &tf, dev->devno);

	tf.command = ATA_CMD_INIT_DEV_PARAMS;

	tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;

	tf.protocol = ATA_PROT_NODATA;

	tf.nsect = sectors;

	tf.device |= (heads - 1) & 0x0f; /* max head = num. of heads - 1 */



	if (rc)

	if (ata_exec_internal(ap, dev, &tf, DMA_NONE, NULL, 0)) {

		printk(KERN_ERR "ata%u: failed to init parameters, disabled\n",

		       ap->id);

		ata_port_disable(ap);

	else

		ata_qc_wait_err(qc, &wait);

	}



	DPRINTK("EXIT\n");

}