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Commit 3d4253d9 authored by David S. Miller's avatar David S. Miller
Browse files

[SCSI] qlogicpti: Convert to new SBUS device framework.

parent 7bd5ed5d
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+186 −175
Original line number Diff line number Diff line
/* qlogicpti.c: Performance Technologies QlogicISP sbus card driver.
 *
 * Copyright (C) 1996 David S. Miller (davem@caipfs.rutgers.edu)
 * Copyright (C) 1996, 2006 David S. Miller (davem@davemloft.net)
 *
 * A lot of this driver was directly stolen from Erik H. Moe's PCI
 * Qlogic ISP driver.  Mucho kudos to him for this code.
@@ -46,8 +46,6 @@
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_host.h>



#define MAX_TARGETS	16
#define MAX_LUNS	8	/* 32 for 1.31 F/W */

@@ -57,7 +55,6 @@

static struct qlogicpti *qptichain = NULL;
static DEFINE_SPINLOCK(qptichain_lock);
static int qptis_running = 0;

#define PACKB(a, b)			(((a)<<4)|(b))

@@ -815,173 +812,6 @@ static int __init qpti_map_queues(struct qlogicpti *qpti)
	return 0;
}

/* Detect all PTI Qlogic ISP's in the machine. */
static int __init qlogicpti_detect(struct scsi_host_template *tpnt)
{
	struct qlogicpti *qpti;
	struct Scsi_Host *qpti_host;
	struct sbus_bus *sbus;
	struct sbus_dev *sdev;
	int nqptis = 0, nqptis_in_use = 0;

	tpnt->proc_name = "qlogicpti";
	for_each_sbus(sbus) {
		for_each_sbusdev(sdev, sbus) {
			/* Is this a red snapper? */
			if (strcmp(sdev->prom_name, "ptisp") &&
			    strcmp(sdev->prom_name, "PTI,ptisp") &&
			    strcmp(sdev->prom_name, "QLGC,isp") &&
			    strcmp(sdev->prom_name, "SUNW,isp"))
				continue;

			/* Sometimes Antares cards come up not completely
			 * setup, and we get a report of a zero IRQ.
			 * Skip over them in such cases so we survive.
			 */
			if (sdev->irqs[0] == 0) {
				printk("qpti%d: Adapter reports no interrupt, "
				       "skipping over this card.", nqptis);
				continue;
			}

			/* Yep, register and allocate software state. */
			qpti_host = scsi_register(tpnt, sizeof(struct qlogicpti));
			if (!qpti_host) {
				printk("QPTI: Cannot register PTI Qlogic ISP SCSI host");
				continue;
			}
			qpti = (struct qlogicpti *) qpti_host->hostdata;

			/* We are wide capable, 16 targets. */
			qpti_host->max_id = MAX_TARGETS;

			/* Setup back pointers and misc. state. */
			qpti->qhost = qpti_host;
			qpti->sdev = sdev;
			qpti->qpti_id = nqptis++;
			qpti->prom_node = sdev->prom_node;
			prom_getstring(qpti->prom_node, "name",
				       qpti->prom_name,
				       sizeof(qpti->prom_name));

			/* This is not correct, actually. There's a switch
			 * on the PTI cards that put them into "emulation"
			 * mode- i.e., report themselves as QLGC,isp
			 * instead of PTI,ptisp. The only real substantive
			 * difference between non-pti and pti cards is
			 * the tmon register. Which is possibly even
			 * there for Qlogic cards, but non-functional.
			 */
			qpti->is_pti = (strcmp (qpti->prom_name, "QLGC,isp") != 0);

			qpti_chain_add(qpti);
			if (qpti_map_regs(qpti) < 0)
				goto fail_unlink;

			if (qpti_register_irq(qpti) < 0)
				goto fail_unmap_regs;

			qpti_get_scsi_id(qpti);
			qpti_get_bursts(qpti);
			qpti_get_clock(qpti);

			/* Clear out scsi_cmnd array. */
			memset(qpti->cmd_slots, 0, sizeof(qpti->cmd_slots));

			if (qpti_map_queues(qpti) < 0)
				goto fail_free_irq;

			/* Load the firmware. */
			if (qlogicpti_load_firmware(qpti))
				goto fail_unmap_queues;
			if (qpti->is_pti) {
				/* Check the PTI status reg. */
				if (qlogicpti_verify_tmon(qpti))
					goto fail_unmap_queues;
			}

			/* Reset the ISP and init res/req queues. */
			if (qlogicpti_reset_hardware(qpti_host))
				goto fail_unmap_queues;

			printk("(Firmware v%d.%d.%d)", qpti->fware_majrev,
			    qpti->fware_minrev, qpti->fware_micrev);
			{
				char buffer[60];
				
				prom_getstring (qpti->prom_node,
						"isp-fcode", buffer, 60);
				if (buffer[0])
					printk("(Firmware %s)", buffer);
				if (prom_getbool(qpti->prom_node, "differential"))
					qpti->differential = 1;
			}
			
			printk (" [%s Wide, using %s interface]\n",
			       (qpti->ultra ? "Ultra" : "Fast"),
			       (qpti->differential ? "differential" : "single ended"));

			nqptis_in_use++;
			continue;

		fail_unmap_queues:
#define QSIZE(entries)	(((entries) + 1) * QUEUE_ENTRY_LEN)
			sbus_free_consistent(qpti->sdev,
					     QSIZE(RES_QUEUE_LEN),
					     qpti->res_cpu, qpti->res_dvma);
			sbus_free_consistent(qpti->sdev,
					     QSIZE(QLOGICPTI_REQ_QUEUE_LEN),
					     qpti->req_cpu, qpti->req_dvma);
#undef QSIZE
		fail_free_irq:
			free_irq(qpti->irq, qpti);

		fail_unmap_regs:
			sbus_iounmap(qpti->qregs,
				     qpti->sdev->reg_addrs[0].reg_size);
			if (qpti->is_pti)
				sbus_iounmap(qpti->sreg, sizeof(unsigned char));
		fail_unlink:
			qpti_chain_del(qpti);
			scsi_unregister(qpti->qhost);
		}
	}
	if (nqptis)
		printk("QPTI: Total of %d PTI Qlogic/ISP hosts found, %d actually in use.\n",
		       nqptis, nqptis_in_use);
	qptis_running = nqptis_in_use;
	return nqptis;
}

static int qlogicpti_release(struct Scsi_Host *host)
{
	struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata;

	/* Remove visibility from IRQ handlers. */
	qpti_chain_del(qpti);

	/* Shut up the card. */
	sbus_writew(0, qpti->qregs + SBUS_CTRL);

	/* Free IRQ handler and unmap Qlogic,ISP and PTI status regs. */
	free_irq(qpti->irq, qpti);

#define QSIZE(entries)	(((entries) + 1) * QUEUE_ENTRY_LEN)
	sbus_free_consistent(qpti->sdev,
			     QSIZE(RES_QUEUE_LEN),
			     qpti->res_cpu, qpti->res_dvma);
	sbus_free_consistent(qpti->sdev,
			     QSIZE(QLOGICPTI_REQ_QUEUE_LEN),
			     qpti->req_cpu, qpti->req_dvma);
#undef QSIZE

	sbus_iounmap(qpti->qregs, qpti->sdev->reg_addrs[0].reg_size);
	if (qpti->is_pti)
		sbus_iounmap(qpti->sreg, sizeof(unsigned char));

	return 0;
}

const char *qlogicpti_info(struct Scsi_Host *host)
{
	static char buf[80];
@@ -1551,9 +1381,9 @@ static int qlogicpti_reset(struct scsi_cmnd *Cmnd)
	return return_status;
}

static struct scsi_host_template driver_template = {
	.detect			= qlogicpti_detect,
	.release		= qlogicpti_release,
static struct scsi_host_template qpti_template = {
	.module			= THIS_MODULE,
	.name			= "qlogicpti",
	.info			= qlogicpti_info,
	.queuecommand		= qlogicpti_queuecommand_slow,
	.eh_abort_handler	= qlogicpti_abort,
@@ -1565,8 +1395,189 @@ static struct scsi_host_template driver_template = {
	.use_clustering		= ENABLE_CLUSTERING,
};

static int __devinit qpti_sbus_probe(struct of_device *dev, const struct of_device_id *match)
{
	static int nqptis;
	struct sbus_dev *sdev = to_sbus_device(&dev->dev);
	struct device_node *dp = dev->node;
	struct scsi_host_template *tpnt = match->data;
	struct Scsi_Host *host;
	struct qlogicpti *qpti;
	char *fcode;

	/* Sometimes Antares cards come up not completely
	 * setup, and we get a report of a zero IRQ.
	 */
	if (sdev->irqs[0] == 0)
		return -ENODEV;

	host = scsi_host_alloc(tpnt, sizeof(struct qlogicpti));
	if (!host)
		return -ENOMEM;

	qpti = (struct qlogicpti *) host->hostdata;

	host->max_id = MAX_TARGETS;
	qpti->qhost = host;
	qpti->sdev = sdev;
	qpti->qpti_id = nqptis;
	qpti->prom_node = sdev->prom_node;
	strcpy(qpti->prom_name, sdev->ofdev.node->name);
	qpti->is_pti = strcmp(qpti->prom_name, "QLGC,isp");

	if (qpti_map_regs(qpti) < 0)
		goto fail_unlink;

	if (qpti_register_irq(qpti) < 0)
		goto fail_unmap_regs;

	qpti_get_scsi_id(qpti);
	qpti_get_bursts(qpti);
	qpti_get_clock(qpti);

	/* Clear out scsi_cmnd array. */
	memset(qpti->cmd_slots, 0, sizeof(qpti->cmd_slots));

	if (qpti_map_queues(qpti) < 0)
		goto fail_free_irq;

	/* Load the firmware. */
	if (qlogicpti_load_firmware(qpti))
		goto fail_unmap_queues;
	if (qpti->is_pti) {
		/* Check the PTI status reg. */
		if (qlogicpti_verify_tmon(qpti))
			goto fail_unmap_queues;
	}

	/* Reset the ISP and init res/req queues. */
	if (qlogicpti_reset_hardware(host))
		goto fail_unmap_queues;

	if (scsi_add_host(host, &dev->dev))
		goto fail_unmap_queues;

	printk("(Firmware v%d.%d.%d)", qpti->fware_majrev,
	       qpti->fware_minrev, qpti->fware_micrev);

	fcode = of_get_property(dp, "isp-fcode", NULL);
	if (fcode && fcode[0])
		printk("(Firmware %s)", fcode);
	if (of_find_property(dp, "differential", NULL) != NULL)
		qpti->differential = 1;
			
	printk (" [%s Wide, using %s interface]\n",
		(qpti->ultra ? "Ultra" : "Fast"),
		(qpti->differential ? "differential" : "single ended"));

	dev_set_drvdata(&sdev->ofdev.dev, qpti);

	qpti_chain_add(qpti);

	scsi_scan_host(host);
	nqptis++;

	return 0;

fail_unmap_queues:
#define QSIZE(entries)	(((entries) + 1) * QUEUE_ENTRY_LEN)
	sbus_free_consistent(qpti->sdev,
			     QSIZE(RES_QUEUE_LEN),
			     qpti->res_cpu, qpti->res_dvma);
	sbus_free_consistent(qpti->sdev,
			     QSIZE(QLOGICPTI_REQ_QUEUE_LEN),
			     qpti->req_cpu, qpti->req_dvma);
#undef QSIZE

fail_unmap_regs:
	sbus_iounmap(qpti->qregs,
		     qpti->sdev->reg_addrs[0].reg_size);
	if (qpti->is_pti)
		sbus_iounmap(qpti->sreg, sizeof(unsigned char));

fail_free_irq:
	free_irq(qpti->irq, qpti);

fail_unlink:
	scsi_host_put(host);

	return -ENODEV;
}

static int __devexit qpti_sbus_remove(struct of_device *dev)
{
	struct qlogicpti *qpti = dev_get_drvdata(&dev->dev);

	qpti_chain_del(qpti);

	scsi_remove_host(qpti->qhost);

	/* Shut up the card. */
	sbus_writew(0, qpti->qregs + SBUS_CTRL);

	/* Free IRQ handler and unmap Qlogic,ISP and PTI status regs. */
	free_irq(qpti->irq, qpti);

#define QSIZE(entries)	(((entries) + 1) * QUEUE_ENTRY_LEN)
	sbus_free_consistent(qpti->sdev,
			     QSIZE(RES_QUEUE_LEN),
			     qpti->res_cpu, qpti->res_dvma);
	sbus_free_consistent(qpti->sdev,
			     QSIZE(QLOGICPTI_REQ_QUEUE_LEN),
			     qpti->req_cpu, qpti->req_dvma);
#undef QSIZE

	sbus_iounmap(qpti->qregs, qpti->sdev->reg_addrs[0].reg_size);
	if (qpti->is_pti)
		sbus_iounmap(qpti->sreg, sizeof(unsigned char));

	scsi_host_put(qpti->qhost);

	return 0;
}

static struct of_device_id qpti_match[] = {
	{
		.name = "ptisp",
		.data = &qpti_template,
	},
	{
		.name = "PTI,ptisp",
		.data = &qpti_template,
	},
	{
		.name = "QLGC,isp",
		.data = &qpti_template,
	},
	{
		.name = "SUNW,isp",
		.data = &qpti_template,
	},
	{},
};
MODULE_DEVICE_TABLE(of, qpti_match);

static struct of_platform_driver qpti_sbus_driver = {
	.name		= "qpti",
	.match_table	= qpti_match,
	.probe		= qpti_sbus_probe,
	.remove		= __devexit_p(qpti_sbus_remove),
};

#include "scsi_module.c"
static int __init qpti_init(void)
{
	return of_register_driver(&qpti_sbus_driver, &sbus_bus_type);
}

static void __exit qpti_exit(void)
{
	of_unregister_driver(&qpti_sbus_driver);
}

MODULE_DESCRIPTION("QlogicISP SBUS driver");
MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
MODULE_LICENSE("GPL");
MODULE_VERSION("2.0");

module_init(qpti_init);
module_exit(qpti_exit);