[deliverable/linux.git] / drivers / scsi / libsas / sas_ata.c

/*
 * Support for SATA devices on Serial Attached SCSI (SAS) controllers
 *
 * Copyright (C) 2006 IBM Corporation
 *
 * Written by: Darrick J. Wong <djwong@us.ibm.com>, IBM Corporation
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */

#include <scsi/sas_ata.h>
#include "sas_internal.h"
#include <scsi/scsi_host.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_sas.h>
#include "../scsi_sas_internal.h"

static enum ata_completion_errors sas_to_ata_err(struct task_status_struct *ts)
{
	/* Cheesy attempt to translate SAS errors into ATA.  Hah! */

	/* transport error */
	if (ts->resp == SAS_TASK_UNDELIVERED)
		return AC_ERR_ATA_BUS;

	/* ts->resp == SAS_TASK_COMPLETE */
	/* task delivered, what happened afterwards? */
	switch (ts->stat) {
		case SAS_DEV_NO_RESPONSE:
			return AC_ERR_TIMEOUT;

		case SAS_INTERRUPTED:
		case SAS_PHY_DOWN:
		case SAS_NAK_R_ERR:
			return AC_ERR_ATA_BUS;


		case SAS_DATA_UNDERRUN:
			/*
			 * Some programs that use the taskfile interface
			 * (smartctl in particular) can cause underrun
			 * problems.  Ignore these errors, perhaps at our
			 * peril.
			 */
			return 0;

		case SAS_DATA_OVERRUN:
		case SAS_QUEUE_FULL:
		case SAS_DEVICE_UNKNOWN:
		case SAS_SG_ERR:
			return AC_ERR_INVALID;

		case SAM_CHECK_COND:
		case SAS_OPEN_TO:
		case SAS_OPEN_REJECT:
			SAS_DPRINTK("%s: Saw error %d.  What to do?\n",
				    __FUNCTION__, ts->stat);
			return AC_ERR_OTHER;

		case SAS_ABORTED_TASK:
			return AC_ERR_DEV;

		case SAS_PROTO_RESPONSE:
			/* This means the ending_fis has the error
			 * value; return 0 here to collect it */
			return 0;
		default:
			return 0;
	}
}

static void sas_ata_task_done(struct sas_task *task)
{
	struct ata_queued_cmd *qc = task->uldd_task;
	struct domain_device *dev = qc->ap->private_data;
	struct task_status_struct *stat = &task->task_status;
	struct ata_task_resp *resp = (struct ata_task_resp *)stat->buf;
	enum ata_completion_errors ac;

	if (stat->stat == SAS_PROTO_RESPONSE) {
		ata_tf_from_fis(resp->ending_fis, &dev->sata_dev.tf);
		qc->err_mask |= ac_err_mask(dev->sata_dev.tf.command);
		dev->sata_dev.sstatus = resp->sstatus;
		dev->sata_dev.serror = resp->serror;
		dev->sata_dev.scontrol = resp->scontrol;
		dev->sata_dev.ap->sactive = resp->sactive;
	} else if (stat->stat != SAM_STAT_GOOD) {
		ac = sas_to_ata_err(stat);
		if (ac) {
			SAS_DPRINTK("%s: SAS error %x\n", __FUNCTION__,
				    stat->stat);
			/* We saw a SAS error. Send a vague error. */
			qc->err_mask = ac;
			dev->sata_dev.tf.feature = 0x04; /* status err */
			dev->sata_dev.tf.command = ATA_ERR;
		}
	}

	ata_qc_complete(qc);
	list_del_init(&task->list);
	sas_free_task(task);
}

static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc)
{
	int res = -ENOMEM;
	struct sas_task *task;
	struct domain_device *dev = qc->ap->private_data;
	struct sas_ha_struct *sas_ha = dev->port->ha;
	struct Scsi_Host *host = sas_ha->core.shost;
	struct sas_internal *i = to_sas_internal(host->transportt);
	struct scatterlist *sg;
	unsigned int num = 0;
	unsigned int xfer = 0;

	task = sas_alloc_task(GFP_ATOMIC);
	if (!task)
		goto out;
	task->dev = dev;
	task->task_proto = SAS_PROTOCOL_STP;
	task->task_done = sas_ata_task_done;

	if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
	    qc->tf.command == ATA_CMD_FPDMA_READ) {
		/* Need to zero out the tag libata assigned us */
		qc->tf.nsect = 0;
	}

	ata_tf_to_fis(&qc->tf, (u8*)&task->ata_task.fis, 0);
	task->uldd_task = qc;
	if (is_atapi_taskfile(&qc->tf)) {
		memcpy(task->ata_task.atapi_packet, qc->cdb, qc->dev->cdb_len);
		task->total_xfer_len = qc->nbytes + qc->pad_len;
		task->num_scatter = qc->pad_len ? qc->n_elem + 1 : qc->n_elem;
	} else {
		ata_for_each_sg(sg, qc) {
			num++;
			xfer += sg->length;
		}

		task->total_xfer_len = xfer;
		task->num_scatter = num;
	}

	task->data_dir = qc->dma_dir;
	task->scatter = qc->__sg;
	task->ata_task.retry_count = 1;
	task->task_state_flags = SAS_TASK_STATE_PENDING;

	switch (qc->tf.protocol) {
	case ATA_PROT_NCQ:
		task->ata_task.use_ncq = 1;
		/* fall through */
	case ATA_PROT_ATAPI_DMA:
	case ATA_PROT_DMA:
		task->ata_task.dma_xfer = 1;
		break;
	}

	if (sas_ha->lldd_max_execute_num < 2)
		res = i->dft->lldd_execute_task(task, 1, GFP_ATOMIC);
	else
		res = sas_queue_up(task);

	/* Examine */
	if (res) {
		SAS_DPRINTK("lldd_execute_task returned: %d\n", res);

		sas_free_task(task);
		if (res == -SAS_QUEUE_FULL)
			return -ENOMEM;
	}

out:
	return res;
}

static u8 sas_ata_check_status(struct ata_port *ap)
{
	struct domain_device *dev = ap->private_data;
	return dev->sata_dev.tf.command;
}

static void sas_ata_phy_reset(struct ata_port *ap)
{
	struct domain_device *dev = ap->private_data;
	struct sas_internal *i =
		to_sas_internal(dev->port->ha->core.shost->transportt);
	int res = 0;

	if (i->dft->lldd_I_T_nexus_reset)
		res = i->dft->lldd_I_T_nexus_reset(dev);

	if (res)
		SAS_DPRINTK("%s: Unable to reset I T nexus?\n", __FUNCTION__);

	switch (dev->sata_dev.command_set) {
		case ATA_COMMAND_SET:
			SAS_DPRINTK("%s: Found ATA device.\n", __FUNCTION__);
			ap->device[0].class = ATA_DEV_ATA;
			break;
		case ATAPI_COMMAND_SET:
			SAS_DPRINTK("%s: Found ATAPI device.\n", __FUNCTION__);
			ap->device[0].class = ATA_DEV_ATAPI;
			break;
		default:
			SAS_DPRINTK("%s: Unknown SATA command set: %d.\n",
				    __FUNCTION__,
				    dev->sata_dev.command_set);
			ap->device[0].class = ATA_DEV_ATA;
			break;
	}

	ap->cbl = ATA_CBL_SATA;
}

static void sas_ata_post_internal(struct ata_queued_cmd *qc)
{
	if (qc->flags & ATA_QCFLAG_FAILED)
		qc->err_mask |= AC_ERR_OTHER;

	if (qc->err_mask)
		SAS_DPRINTK("%s: Failure; reset phy!\n", __FUNCTION__);
}

static void sas_ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
{
	struct domain_device *dev = ap->private_data;
	memcpy(tf, &dev->sata_dev.tf, sizeof (*tf));
}

static void sas_ata_scr_write(struct ata_port *ap, unsigned int sc_reg_in,
			      u32 val)
{
	struct domain_device *dev = ap->private_data;

	SAS_DPRINTK("STUB %s\n", __FUNCTION__);
	switch (sc_reg_in) {
		case SCR_STATUS:
			dev->sata_dev.sstatus = val;
			break;
		case SCR_CONTROL:
			dev->sata_dev.scontrol = val;
			break;
		case SCR_ERROR:
			dev->sata_dev.serror = val;
			break;
		case SCR_ACTIVE:
			dev->sata_dev.ap->sactive = val;
			break;
	}
}

static u32 sas_ata_scr_read(struct ata_port *ap, unsigned int sc_reg_in)
{
	struct domain_device *dev = ap->private_data;

	SAS_DPRINTK("STUB %s\n", __FUNCTION__);
	switch (sc_reg_in) {
		case SCR_STATUS:
			return dev->sata_dev.sstatus;
		case SCR_CONTROL:
			return dev->sata_dev.scontrol;
		case SCR_ERROR:
			return dev->sata_dev.serror;
		case SCR_ACTIVE:
			return dev->sata_dev.ap->sactive;
		default:
			return 0xffffffffU;
	}
}

static struct ata_port_operations sas_sata_ops = {
	.port_disable		= ata_port_disable,
	.check_status		= sas_ata_check_status,
	.check_altstatus	= sas_ata_check_status,
	.dev_select		= ata_noop_dev_select,
	.phy_reset		= sas_ata_phy_reset,
	.post_internal_cmd	= sas_ata_post_internal,
	.tf_read		= sas_ata_tf_read,
	.qc_prep		= ata_noop_qc_prep,
	.qc_issue		= sas_ata_qc_issue,
	.port_start		= ata_sas_port_start,
	.port_stop		= ata_sas_port_stop,
	.scr_read		= sas_ata_scr_read,
	.scr_write		= sas_ata_scr_write
};

static struct ata_port_info sata_port_info = {
	.flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
		ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA | ATA_FLAG_NCQ,
	.pio_mask = 0x1f, /* PIO0-4 */
	.mwdma_mask = 0x07, /* MWDMA0-2 */
	.udma_mask = ATA_UDMA6,
	.port_ops = &sas_sata_ops
};

int sas_ata_init_host_and_port(struct domain_device *found_dev,
			       struct scsi_target *starget)
{
	struct Scsi_Host *shost = dev_to_shost(&starget->dev);
	struct sas_ha_struct *ha = SHOST_TO_SAS_HA(shost);
	struct ata_port *ap;

	ata_host_init(&found_dev->sata_dev.ata_host,
		      &ha->pcidev->dev,
		      sata_port_info.flags,
		      &sas_sata_ops);
	ap = ata_sas_port_alloc(&found_dev->sata_dev.ata_host,
				&sata_port_info,
				shost);
	if (!ap) {
		SAS_DPRINTK("ata_sas_port_alloc failed.\n");
		return -ENODEV;
	}

	ap->private_data = found_dev;
	ap->cbl = ATA_CBL_SATA;
	ap->scsi_host = shost;
	found_dev->sata_dev.ap = ap;

	return 0;
}
Commit	Line	Data
338ec570 DW	1	/*
	2	* Support for SATA devices on Serial Attached SCSI (SAS) controllers
	3	*
	4	* Copyright (C) 2006 IBM Corporation
	5	*
	6	* Written by: Darrick J. Wong <djwong@us.ibm.com>, IBM Corporation
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License as
	10	* published by the Free Software Foundation; either version 2 of the
	11	* License, or (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful, but
	14	* WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	* General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
	21	* USA
	22	*/
	23
	24	#include <scsi/sas_ata.h>
	25	#include "sas_internal.h"
	26	#include <scsi/scsi_host.h>
	27	#include <scsi/scsi_device.h>
	28	#include <scsi/scsi_tcq.h>
	29	#include <scsi/scsi.h>
	30	#include <scsi/scsi_transport.h>
	31	#include <scsi/scsi_transport_sas.h>
	32	#include "../scsi_sas_internal.h"
	33
	34	static enum ata_completion_errors sas_to_ata_err(struct task_status_struct *ts)
	35	{
	36	/* Cheesy attempt to translate SAS errors into ATA. Hah! */
	37
	38	/* transport error */
	39	if (ts->resp == SAS_TASK_UNDELIVERED)
	40	return AC_ERR_ATA_BUS;
	41
	42	/* ts->resp == SAS_TASK_COMPLETE */
	43	/* task delivered, what happened afterwards? */
	44	switch (ts->stat) {
	45	case SAS_DEV_NO_RESPONSE:
	46	return AC_ERR_TIMEOUT;
	47
	48	case SAS_INTERRUPTED:
	49	case SAS_PHY_DOWN:
	50	case SAS_NAK_R_ERR:
	51	return AC_ERR_ATA_BUS;
	52
	53
	54	case SAS_DATA_UNDERRUN:
	55	/*
	56	* Some programs that use the taskfile interface
	57	* (smartctl in particular) can cause underrun
	58	* problems. Ignore these errors, perhaps at our
	59	* peril.
	60	*/
	61	return 0;
	62
	63	case SAS_DATA_OVERRUN:
	64	case SAS_QUEUE_FULL:
65	case SAS_DEVICE_UNKNOWN:
66	case SAS_SG_ERR:
67	return AC_ERR_INVALID;
68
69	case SAM_CHECK_COND:
70	case SAS_OPEN_TO:
71	case SAS_OPEN_REJECT:
72	SAS_DPRINTK("%s: Saw error %d. What to do?\n",
73	__FUNCTION__, ts->stat);
74	return AC_ERR_OTHER;
75
76	case SAS_ABORTED_TASK:
77	return AC_ERR_DEV;
78
79	case SAS_PROTO_RESPONSE:
80	/* This means the ending_fis has the error
81	* value; return 0 here to collect it */
82	return 0;
83	default:
84	return 0;
85	}
86	}
87
88	static void sas_ata_task_done(struct sas_task *task)
89	{
90	struct ata_queued_cmd *qc = task->uldd_task;
91	struct domain_device *dev = qc->ap->private_data;
92	struct task_status_struct *stat = &task->task_status;
93	struct ata_task_resp resp = (struct ata_task_resp )stat->buf;
94	enum ata_completion_errors ac;
95
96	if (stat->stat == SAS_PROTO_RESPONSE) {
97	ata_tf_from_fis(resp->ending_fis, &dev->sata_dev.tf);
98	qc->err_mask \|= ac_err_mask(dev->sata_dev.tf.command);
99	dev->sata_dev.sstatus = resp->sstatus;
100	dev->sata_dev.serror = resp->serror;
101	dev->sata_dev.scontrol = resp->scontrol;
102	dev->sata_dev.ap->sactive = resp->sactive;
103	} else if (stat->stat != SAM_STAT_GOOD) {
104	ac = sas_to_ata_err(stat);
105	if (ac) {
106	SAS_DPRINTK("%s: SAS error %x\n", __FUNCTION__,
107	stat->stat);
108	/* We saw a SAS error. Send a vague error. */
109	qc->err_mask = ac;
110	dev->sata_dev.tf.feature = 0x04; /* status err */
111	dev->sata_dev.tf.command = ATA_ERR;
112	}
113	}
114
115	ata_qc_complete(qc);
116	list_del_init(&task->list);
117	sas_free_task(task);
118	}
119
120	static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc)
121	{
122	int res = -ENOMEM;
123	struct sas_task *task;
124	struct domain_device *dev = qc->ap->private_data;
125	struct sas_ha_struct *sas_ha = dev->port->ha;
126	struct Scsi_Host *host = sas_ha->core.shost;
127	struct sas_internal *i = to_sas_internal(host->transportt);
128	struct scatterlist *sg;
129	unsigned int num = 0;
130	unsigned int xfer = 0;
131
132	task = sas_alloc_task(GFP_ATOMIC);
133	if (!task)
134	goto out;
135	task->dev = dev;
136	task->task_proto = SAS_PROTOCOL_STP;
137	task->task_done = sas_ata_task_done;
138
139	if (qc->tf.command == ATA_CMD_FPDMA_WRITE \|\|
140	qc->tf.command == ATA_CMD_FPDMA_READ) {
141	/* Need to zero out the tag libata assigned us */
142	qc->tf.nsect = 0;
143	}
144
145	ata_tf_to_fis(&qc->tf, (u8*)&task->ata_task.fis, 0);
146	task->uldd_task = qc;
147	if (is_atapi_taskfile(&qc->tf)) {
148	memcpy(task->ata_task.atapi_packet, qc->cdb, qc->dev->cdb_len);
149	task->total_xfer_len = qc->nbytes + qc->pad_len;
150	task->num_scatter = qc->pad_len ? qc->n_elem + 1 : qc->n_elem;
151	} else {
152	ata_for_each_sg(sg, qc) {
153	num++;
154	xfer += sg->length;
155	}
156
157	task->total_xfer_len = xfer;
158	task->num_scatter = num;
159	}
160
161	task->data_dir = qc->dma_dir;
162	task->scatter = qc->__sg;
163	task->ata_task.retry_count = 1;
164	task->task_state_flags = SAS_TASK_STATE_PENDING;
165
166	switch (qc->tf.protocol) {
167	case ATA_PROT_NCQ:
168	task->ata_task.use_ncq = 1;
169	/* fall through */
170	case ATA_PROT_ATAPI_DMA:
171	case ATA_PROT_DMA:
172	task->ata_task.dma_xfer = 1;
173	break;
174	}
175
176	if (sas_ha->lldd_max_execute_num < 2)
177	res = i->dft->lldd_execute_task(task, 1, GFP_ATOMIC);
178	else
179	res = sas_queue_up(task);
180
181	/* Examine */
182	if (res) {
183	SAS_DPRINTK("lldd_execute_task returned: %d\n", res);
184
185	sas_free_task(task);
186	if (res == -SAS_QUEUE_FULL)
187	return -ENOMEM;
188	}
189
190	out:
191	return res;
192	}
193
194	static u8 sas_ata_check_status(struct ata_port *ap)
195	{
196	struct domain_device *dev = ap->private_data;
197	return dev->sata_dev.tf.command;
198	}
199
200	static void sas_ata_phy_reset(struct ata_port *ap)
201	{
202	struct domain_device *dev = ap->private_data;
203	struct sas_internal *i =
204	to_sas_internal(dev->port->ha->core.shost->transportt);
205	int res = 0;
206
207	if (i->dft->lldd_I_T_nexus_reset)
208	res = i->dft->lldd_I_T_nexus_reset(dev);
209
210	if (res)
211	SAS_DPRINTK("%s: Unable to reset I T nexus?\n", __FUNCTION__);
212
213	switch (dev->sata_dev.command_set) {
214	case ATA_COMMAND_SET:
215	SAS_DPRINTK("%s: Found ATA device.\n", __FUNCTION__);
216	ap->device[0].class = ATA_DEV_ATA;
217	break;
218	case ATAPI_COMMAND_SET:
219	SAS_DPRINTK("%s: Found ATAPI device.\n", __FUNCTION__);
220	ap->device[0].class = ATA_DEV_ATAPI;
221	break;
222	default:
223	SAS_DPRINTK("%s: Unknown SATA command set: %d.\n",
224	__FUNCTION__,
225	dev->sata_dev.command_set);
226	ap->device[0].class = ATA_DEV_ATA;
227	break;
228	}
229
230	ap->cbl = ATA_CBL_SATA;
231	}
232
233	static void sas_ata_post_internal(struct ata_queued_cmd *qc)
234	{
235	if (qc->flags & ATA_QCFLAG_FAILED)
236	qc->err_mask \|= AC_ERR_OTHER;
237
238	if (qc->err_mask)
239	SAS_DPRINTK("%s: Failure; reset phy!\n", __FUNCTION__);
240	}
241
242	static void sas_ata_tf_read(struct ata_port ap, struct ata_taskfile tf)
243	{
244	struct domain_device *dev = ap->private_data;
245	memcpy(tf, &dev->sata_dev.tf, sizeof (*tf));
246	}
247
248	static void sas_ata_scr_write(struct ata_port *ap, unsigned int sc_reg_in,
249	u32 val)
250	{
251	struct domain_device *dev = ap->private_data;
252
253	SAS_DPRINTK("STUB %s\n", __FUNCTION__);
254	switch (sc_reg_in) {
255	case SCR_STATUS:
256	dev->sata_dev.sstatus = val;
257	break;
258	case SCR_CONTROL:
259	dev->sata_dev.scontrol = val;
260	break;
261	case SCR_ERROR:
262	dev->sata_dev.serror = val;
263	break;
264	case SCR_ACTIVE:
265	dev->sata_dev.ap->sactive = val;
266	break;
267	}
268	}
269
270	static u32 sas_ata_scr_read(struct ata_port *ap, unsigned int sc_reg_in)
271	{
272	struct domain_device *dev = ap->private_data;
273
274	SAS_DPRINTK("STUB %s\n", __FUNCTION__);
275	switch (sc_reg_in) {
276	case SCR_STATUS:
277	return dev->sata_dev.sstatus;
278	case SCR_CONTROL:
279	return dev->sata_dev.scontrol;
280	case SCR_ERROR:
281	return dev->sata_dev.serror;
282	case SCR_ACTIVE:
283	return dev->sata_dev.ap->sactive;
284	default:
285	return 0xffffffffU;
286	}
287	}
288
289	static struct ata_port_operations sas_sata_ops = {
290	.port_disable = ata_port_disable,
291	.check_status = sas_ata_check_status,
292	.check_altstatus = sas_ata_check_status,
293	.dev_select = ata_noop_dev_select,
294	.phy_reset = sas_ata_phy_reset,
295	.post_internal_cmd = sas_ata_post_internal,
296	.tf_read = sas_ata_tf_read,
297	.qc_prep = ata_noop_qc_prep,
298	.qc_issue = sas_ata_qc_issue,
299	.port_start = ata_sas_port_start,
300	.port_stop = ata_sas_port_stop,
301	.scr_read = sas_ata_scr_read,
302	.scr_write = sas_ata_scr_write
303	};
304
305	static struct ata_port_info sata_port_info = {
306	.flags = ATA_FLAG_SATA \| ATA_FLAG_NO_LEGACY \| ATA_FLAG_SATA_RESET \|
307	ATA_FLAG_MMIO \| ATA_FLAG_PIO_DMA \| ATA_FLAG_NCQ,
308	.pio_mask = 0x1f, /* PIO0-4 */
309	.mwdma_mask = 0x07, /* MWDMA0-2 */
310	.udma_mask = ATA_UDMA6,
311	.port_ops = &sas_sata_ops
312	};
313
314	int sas_ata_init_host_and_port(struct domain_device *found_dev,
315	struct scsi_target *starget)
316	{
317	struct Scsi_Host *shost = dev_to_shost(&starget->dev);
318	struct sas_ha_struct *ha = SHOST_TO_SAS_HA(shost);
319	struct ata_port *ap;
320
321	ata_host_init(&found_dev->sata_dev.ata_host,
322	&ha->pcidev->dev,
323	sata_port_info.flags,
324	&sas_sata_ops);
325	ap = ata_sas_port_alloc(&found_dev->sata_dev.ata_host,
326	&sata_port_info,
327	shost);
328	if (!ap) {
329	SAS_DPRINTK("ata_sas_port_alloc failed.\n");
330	return -ENODEV;
331	}
332
333	ap->private_data = found_dev;
334	ap->cbl = ATA_CBL_SATA;
335	ap->scsi_host = shost;
336	found_dev->sata_dev.ap = ap;
337
338	return 0;
339	}