Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This is mostly update of the usual drivers: qla2xxx, hpsa, lpfc, ufs,
  mpt3sas, ibmvscsi, megaraid_sas, bnx2fc and hisi_sas as well as the
  removal of the osst driver (I heard from Willem privately that he
  would like the driver removed because all his test hardware has
  failed). Plus number of minor changes, spelling fixes and other
  trivia.

  The big merge conflict this time around is the SPDX licence tags.
  Following discussion on linux-next, we believe our version to be more
  accurate than the one in the tree, so the resolution is to take our
  version for all the SPDX conflicts"

Note on the SPDX license tag conversion conflicts: the SCSI tree had
done its own SPDX conversion, which in some cases conflicted with the
treewide ones done by Thomas & co.

In almost all cases, the conflicts were purely syntactic: the SCSI tree
used the old-style SPDX tags ("GPL-2.0" and "GPL-2.0+") while the
treewide conversion had used the new-style ones ("GPL-2.0-only" and
"GPL-2.0-or-later").

In these cases I picked the new-style one.

In a few cases, the SPDX conversion was actually different, though.  As
explained by James above, and in more detail in a pre-pull-request
thread:

 "The other problem is actually substantive: In the libsas code Luben
  Tuikov originally specified gpl 2.0 only by dint of stating:

  * This file is licensed under GPLv2.

  In all the libsas files, but then muddied the water by quoting GPLv2
  verbatim (which includes the or later than language). So for these
  files Christoph did the conversion to v2 only SPDX tags and Thomas
  converted to v2 or later tags"

So in those cases, where the spdx tag substantially mattered, I took the
SCSI tree conversion of it, but then also took the opportunity to turn
the old-style "GPL-2.0" into a new-style "GPL-2.0-only" tag.

Similarly, when there were whitespace differences or other differences
to the comments around the copyright notices, I took the version from
the SCSI tree as being the more specific conversion.

Finally, in the spdx conversions that had no conflicts (because the
treewide ones hadn't been done for those files), I just took the SCSI
tree version as-is, even if it was old-style.  The old-style conversions
are perfectly valid, even if the "-only" and "-or-later" versions are
perhaps more descriptive.

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (185 commits)
  scsi: qla2xxx: move IO flush to the front of NVME rport unregistration
  scsi: qla2xxx: Fix NVME cmd and LS cmd timeout race condition
  scsi: qla2xxx: on session delete, return nvme cmd
  scsi: qla2xxx: Fix kernel crash after disconnecting NVMe devices
  scsi: megaraid_sas: Update driver version to 07.710.06.00-rc1
  scsi: megaraid_sas: Introduce various Aero performance modes
  scsi: megaraid_sas: Use high IOPS queues based on IO workload
  scsi: megaraid_sas: Set affinity for high IOPS reply queues
  scsi: megaraid_sas: Enable coalescing for high IOPS queues
  scsi: megaraid_sas: Add support for High IOPS queues
  scsi: megaraid_sas: Add support for MPI toolbox commands
  scsi: megaraid_sas: Offload Aero RAID5/6 division calculations to driver
  scsi: megaraid_sas: RAID1 PCI bandwidth limit algorithm is applicable for only Ventura
  scsi: megaraid_sas: megaraid_sas: Add check for count returned by HOST_DEVICE_LIST DCMD
  scsi: megaraid_sas: Handle sequence JBOD map failure at driver level
  scsi: megaraid_sas: Don't send FPIO to RL Bypass queue
  scsi: megaraid_sas: In probe context, retry IOC INIT once if firmware is in fault
  scsi: megaraid_sas: Release Mutex lock before OCR in case of DCMD timeout
  scsi: megaraid_sas: Call disable_irq from process IRQ poll
  scsi: megaraid_sas: Remove few debug counters from IO path
  ...

1 files changed, 597 insertions, 0 deletions

diff --git a/drivers/scsi/fdomain.c b/drivers/scsi/fdomain.c
new file mode 100644
index 000000000000..b5e66971b6d9
--- /dev/null
+++ b/drivers/scsi/fdomain.c
@@ -0,0 +1,597 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Driver for Future Domain TMC-16x0 and TMC-3260 SCSI host adapters
+ * Copyright 2019 Ondrej Zary
+ *
+ * Original driver by
+ * Rickard E. Faith, faith@cs.unc.edu
+ *
+ * Future Domain BIOS versions supported for autodetect:
+ *    2.0, 3.0, 3.2, 3.4 (1.0), 3.5 (2.0), 3.6, 3.61
+ * Chips supported:
+ *    TMC-1800, TMC-18C50, TMC-18C30, TMC-36C70
+ * Boards supported:
+ *    Future Domain TMC-1650, TMC-1660, TMC-1670, TMC-1680, TMC-1610M/MER/MEX
+ *    Future Domain TMC-3260 (PCI)
+ *    Quantum ISA-200S, ISA-250MG
+ *    Adaptec AHA-2920A (PCI) [BUT *NOT* AHA-2920C -- use aic7xxx instead]
+ *    IBM ?
+ *
+ * NOTE:
+ *
+ * The Adaptec AHA-2920C has an Adaptec AIC-7850 chip on it.
+ * Use the aic7xxx driver for this board.
+ *
+ * The Adaptec AHA-2920A has a Future Domain chip on it, so this is the right
+ * driver for that card.  Unfortunately, the boxes will probably just say
+ * "2920", so you'll have to look on the card for a Future Domain logo, or a
+ * letter after the 2920.
+ *
+ * If you have a TMC-8xx or TMC-9xx board, then this is not the driver for
+ * your board.
+ *
+ * DESCRIPTION:
+ *
+ * This is the Linux low-level SCSI driver for Future Domain TMC-1660/1680
+ * TMC-1650/1670, and TMC-3260 SCSI host adapters.  The 1650 and 1670 have a
+ * 25-pin external connector, whereas the 1660 and 1680 have a SCSI-2 50-pin
+ * high-density external connector.  The 1670 and 1680 have floppy disk
+ * controllers built in.  The TMC-3260 is a PCI bus card.
+ *
+ * Future Domain's older boards are based on the TMC-1800 chip, and this
+ * driver was originally written for a TMC-1680 board with the TMC-1800 chip.
+ * More recently, boards are being produced with the TMC-18C50 and TMC-18C30
+ * chips.
+ *
+ * Please note that the drive ordering that Future Domain implemented in BIOS
+ * versions 3.4 and 3.5 is the opposite of the order (currently) used by the
+ * rest of the SCSI industry.
+ *
+ *
+ * REFERENCES USED:
+ *
+ * "TMC-1800 SCSI Chip Specification (FDC-1800T)", Future Domain Corporation,
+ * 1990.
+ *
+ * "Technical Reference Manual: 18C50 SCSI Host Adapter Chip", Future Domain
+ * Corporation, January 1992.
+ *
+ * "LXT SCSI Products: Specifications and OEM Technical Manual (Revision
+ * B/September 1991)", Maxtor Corporation, 1991.
+ *
+ * "7213S product Manual (Revision P3)", Maxtor Corporation, 1992.
+ *
+ * "Draft Proposed American National Standard: Small Computer System
+ * Interface - 2 (SCSI-2)", Global Engineering Documents. (X3T9.2/86-109,
+ * revision 10h, October 17, 1991)
+ *
+ * Private communications, Drew Eckhardt (drew@cs.colorado.edu) and Eric
+ * Youngdale (ericy@cais.com), 1992.
+ *
+ * Private communication, Tuong Le (Future Domain Engineering department),
+ * 1994. (Disk geometry computations for Future Domain BIOS version 3.4, and
+ * TMC-18C30 detection.)
+ *
+ * Hogan, Thom. The Programmer's PC Sourcebook. Microsoft Press, 1988. Page
+ * 60 (2.39: Disk Partition Table Layout).
+ *
+ * "18C30 Technical Reference Manual", Future Domain Corporation, 1993, page
+ * 6-1.
+ */
+
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+#include <linux/workqueue.h>
+#include <scsi/scsicam.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_host.h>
+#include "fdomain.h"
+
+/*
+ * FIFO_COUNT: The host adapter has an 8K cache (host adapters based on the
+ * 18C30 chip have a 2k cache).  When this many 512 byte blocks are filled by
+ * the SCSI device, an interrupt will be raised.  Therefore, this could be as
+ * low as 0, or as high as 16.  Note, however, that values which are too high
+ * or too low seem to prevent any interrupts from occurring, and thereby lock
+ * up the machine.
+ */
+#define FIFO_COUNT	2	/* Number of 512 byte blocks before INTR */
+#define PARITY_MASK	ACTL_PAREN	/* Parity enabled, 0 = disabled */
+
+enum chip_type {
+	unknown		= 0x00,
+	tmc1800		= 0x01,
+	tmc18c50	= 0x02,
+	tmc18c30	= 0x03,
+};
+
+struct fdomain {
+	int base;
+	struct scsi_cmnd *cur_cmd;
+	enum chip_type chip;
+	struct work_struct work;
+};
+
+static inline void fdomain_make_bus_idle(struct fdomain *fd)
+{
+	outb(0, fd->base + REG_BCTL);
+	outb(0, fd->base + REG_MCTL);
+	if (fd->chip == tmc18c50 || fd->chip == tmc18c30)
+		/* Clear forced intr. */
+		outb(ACTL_RESET | ACTL_CLRFIRQ | PARITY_MASK,
+		     fd->base + REG_ACTL);
+	else
+		outb(ACTL_RESET | PARITY_MASK, fd->base + REG_ACTL);
+}
+
+static enum chip_type fdomain_identify(int port)
+{
+	u16 id = inb(port + REG_ID_LSB) | inb(port + REG_ID_MSB) << 8;
+
+	switch (id) {
+	case 0x6127:
+		return tmc1800;
+	case 0x60e9: /* 18c50 or 18c30 */
+		break;
+	default:
+		return unknown;
+	}
+
+	/* Try to toggle 32-bit mode. This only works on an 18c30 chip. */
+	outb(CFG2_32BIT, port + REG_CFG2);
+	if ((inb(port + REG_CFG2) & CFG2_32BIT)) {
+		outb(0, port + REG_CFG2);
+		if ((inb(port + REG_CFG2) & CFG2_32BIT) == 0)
+			return tmc18c30;
+	}
+	/* If that failed, we are an 18c50. */
+	return tmc18c50;
+}
+
+static int fdomain_test_loopback(int base)
+{
+	int i;
+
+	for (i = 0; i < 255; i++) {
+		outb(i, base + REG_LOOPBACK);
+		if (inb(base + REG_LOOPBACK) != i)
+			return 1;
+	}
+
+	return 0;
+}
+
+static void fdomain_reset(int base)
+{
+	outb(1, base + REG_BCTL);
+	mdelay(20);
+	outb(0, base + REG_BCTL);
+	mdelay(1150);
+	outb(0, base + REG_MCTL);
+	outb(PARITY_MASK, base + REG_ACTL);
+}
+
+static int fdomain_select(struct Scsi_Host *sh, int target)
+{
+	int status;
+	unsigned long timeout;
+	struct fdomain *fd = shost_priv(sh);
+
+	outb(BCTL_BUSEN | BCTL_SEL, fd->base + REG_BCTL);
+	outb(BIT(sh->this_id) | BIT(target), fd->base + REG_SCSI_DATA_NOACK);
+
+	/* Stop arbitration and enable parity */
+	outb(PARITY_MASK, fd->base + REG_ACTL);
+
+	timeout = 350;	/* 350 msec */
+
+	do {
+		status = inb(fd->base + REG_BSTAT);
+		if (status & BSTAT_BSY) {
+			/* Enable SCSI Bus */
+			/* (on error, should make bus idle with 0) */
+			outb(BCTL_BUSEN, fd->base + REG_BCTL);
+			return 0;
+		}
+		mdelay(1);
+	} while (--timeout);
+	fdomain_make_bus_idle(fd);
+	return 1;
+}
+
+static void fdomain_finish_cmd(struct fdomain *fd, int result)
+{
+	outb(0, fd->base + REG_ICTL);
+	fdomain_make_bus_idle(fd);
+	fd->cur_cmd->result = result;
+	fd->cur_cmd->scsi_done(fd->cur_cmd);
+	fd->cur_cmd = NULL;
+}
+
+static void fdomain_read_data(struct scsi_cmnd *cmd)
+{
+	struct fdomain *fd = shost_priv(cmd->device->host);
+	unsigned char *virt, *ptr;
+	size_t offset, len;
+
+	while ((len = inw(fd->base + REG_FIFO_COUNT)) > 0) {
+		offset = scsi_bufflen(cmd) - scsi_get_resid(cmd);
+		virt = scsi_kmap_atomic_sg(scsi_sglist(cmd), scsi_sg_count(cmd),
+					   &offset, &len);
+		ptr = virt + offset;
+		if (len & 1)
+			*ptr++ = inb(fd->base + REG_FIFO);
+		if (len > 1)
+			insw(fd->base + REG_FIFO, ptr, len >> 1);
+		scsi_set_resid(cmd, scsi_get_resid(cmd) - len);
+		scsi_kunmap_atomic_sg(virt);
+	}
+}
+
+static void fdomain_write_data(struct scsi_cmnd *cmd)
+{
+	struct fdomain *fd = shost_priv(cmd->device->host);
+	/* 8k FIFO for pre-tmc18c30 chips, 2k FIFO for tmc18c30 */
+	int FIFO_Size = fd->chip == tmc18c30 ? 0x800 : 0x2000;
+	unsigned char *virt, *ptr;
+	size_t offset, len;
+
+	while ((len = FIFO_Size - inw(fd->base + REG_FIFO_COUNT)) > 512) {
+		offset = scsi_bufflen(cmd) - scsi_get_resid(cmd);
+		if (len + offset > scsi_bufflen(cmd)) {
+			len = scsi_bufflen(cmd) - offset;
+			if (len == 0)
+				break;
+		}
+		virt = scsi_kmap_atomic_sg(scsi_sglist(cmd), scsi_sg_count(cmd),
+					   &offset, &len);
+		ptr = virt + offset;
+		if (len & 1)
+			outb(*ptr++, fd->base + REG_FIFO);
+		if (len > 1)
+			outsw(fd->base + REG_FIFO, ptr, len >> 1);
+		scsi_set_resid(cmd, scsi_get_resid(cmd) - len);
+		scsi_kunmap_atomic_sg(virt);
+	}
+}
+
+static void fdomain_work(struct work_struct *work)
+{
+	struct fdomain *fd = container_of(work, struct fdomain, work);
+	struct Scsi_Host *sh = container_of((void *)fd, struct Scsi_Host,
+					    hostdata);
+	struct scsi_cmnd *cmd = fd->cur_cmd;
+	unsigned long flags;
+	int status;
+	int done = 0;
+
+	spin_lock_irqsave(sh->host_lock, flags);
+
+	if (cmd->SCp.phase & in_arbitration) {
+		status = inb(fd->base + REG_ASTAT);
+		if (!(status & ASTAT_ARB)) {
+			fdomain_finish_cmd(fd, DID_BUS_BUSY << 16);
+			goto out;
+		}
+		cmd->SCp.phase = in_selection;
+
+		outb(ICTL_SEL | FIFO_COUNT, fd->base + REG_ICTL);
+		outb(BCTL_BUSEN | BCTL_SEL, fd->base + REG_BCTL);
+		outb(BIT(cmd->device->host->this_id) | BIT(scmd_id(cmd)),
+		     fd->base + REG_SCSI_DATA_NOACK);
+		/* Stop arbitration and enable parity */
+		outb(ACTL_IRQEN | PARITY_MASK, fd->base + REG_ACTL);
+		goto out;
+	} else if (cmd->SCp.phase & in_selection) {
+		status = inb(fd->base + REG_BSTAT);
+		if (!(status & BSTAT_BSY)) {
+			/* Try again, for slow devices */
+			if (fdomain_select(cmd->device->host, scmd_id(cmd))) {
+				fdomain_finish_cmd(fd, DID_NO_CONNECT << 16);
+				goto out;
+			}
+			/* Stop arbitration and enable parity */
+			outb(ACTL_IRQEN | PARITY_MASK, fd->base + REG_ACTL);
+		}
+		cmd->SCp.phase = in_other;
+		outb(ICTL_FIFO | ICTL_REQ | FIFO_COUNT, fd->base + REG_ICTL);
+		outb(BCTL_BUSEN, fd->base + REG_BCTL);
+		goto out;
+	}
+
+	/* cur_cmd->SCp.phase == in_other: this is the body of the routine */
+	status = inb(fd->base + REG_BSTAT);
+
+	if (status & BSTAT_REQ) {
+		switch (status & 0x0e) {
+		case BSTAT_CMD:	/* COMMAND OUT */
+			outb(cmd->cmnd[cmd->SCp.sent_command++],
+			     fd->base + REG_SCSI_DATA);
+			break;
+		case 0:	/* DATA OUT -- tmc18c50/tmc18c30 only */
+			if (fd->chip != tmc1800 && !cmd->SCp.have_data_in) {
+				cmd->SCp.have_data_in = -1;
+				outb(ACTL_IRQEN | ACTL_FIFOWR | ACTL_FIFOEN |
+				     PARITY_MASK, fd->base + REG_ACTL);
+			}
+			break;
+		case BSTAT_IO:	/* DATA IN -- tmc18c50/tmc18c30 only */
+			if (fd->chip != tmc1800 && !cmd->SCp.have_data_in) {
+				cmd->SCp.have_data_in = 1;
+				outb(ACTL_IRQEN | ACTL_FIFOEN | PARITY_MASK,
+				     fd->base + REG_ACTL);
+			}
+			break;
+		case BSTAT_CMD | BSTAT_IO:	/* STATUS IN */
+			cmd->SCp.Status = inb(fd->base + REG_SCSI_DATA);
+			break;
+		case BSTAT_MSG | BSTAT_CMD:	/* MESSAGE OUT */
+			outb(MESSAGE_REJECT, fd->base + REG_SCSI_DATA);
+			break;
+		case BSTAT_MSG | BSTAT_IO | BSTAT_CMD:	/* MESSAGE IN */
+			cmd->SCp.Message = inb(fd->base + REG_SCSI_DATA);
+			if (!cmd->SCp.Message)
+				++done;
+			break;
+		}
+	}
+
+	if (fd->chip == tmc1800 && !cmd->SCp.have_data_in &&
+	    cmd->SCp.sent_command >= cmd->cmd_len) {
+		if (cmd->sc_data_direction == DMA_TO_DEVICE) {
+			cmd->SCp.have_data_in = -1;
+			outb(ACTL_IRQEN | ACTL_FIFOWR | ACTL_FIFOEN |
+			     PARITY_MASK, fd->base + REG_ACTL);
+		} else {
+			cmd->SCp.have_data_in = 1;
+			outb(ACTL_IRQEN | ACTL_FIFOEN | PARITY_MASK,
+			     fd->base + REG_ACTL);
+		}
+	}
+
+	if (cmd->SCp.have_data_in == -1) /* DATA OUT */
+		fdomain_write_data(cmd);
+
+	if (cmd->SCp.have_data_in == 1) /* DATA IN */
+		fdomain_read_data(cmd);
+
+	if (done) {
+		fdomain_finish_cmd(fd, (cmd->SCp.Status & 0xff) |
+				   ((cmd->SCp.Message & 0xff) << 8) |
+				   (DID_OK << 16));
+	} else {
+		if (cmd->SCp.phase & disconnect) {
+			outb(ICTL_FIFO | ICTL_SEL | ICTL_REQ | FIFO_COUNT,
+			     fd->base + REG_ICTL);
+			outb(0, fd->base + REG_BCTL);
+		} else
+			outb(ICTL_FIFO | ICTL_REQ | FIFO_COUNT,
+			     fd->base + REG_ICTL);
+	}
+out:
+	spin_unlock_irqrestore(sh->host_lock, flags);
+}
+
+static irqreturn_t fdomain_irq(int irq, void *dev_id)
+{
+	struct fdomain *fd = dev_id;
+
+	/* Is it our IRQ? */
+	if ((inb(fd->base + REG_ASTAT) & ASTAT_IRQ) == 0)
+		return IRQ_NONE;
+
+	outb(0, fd->base + REG_ICTL);
+
+	/* We usually have one spurious interrupt after each command. */
+	if (!fd->cur_cmd)	/* Spurious interrupt */
+		return IRQ_NONE;
+
+	schedule_work(&fd->work);
+
+	return IRQ_HANDLED;
+}
+
+static int fdomain_queue(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
+{
+	struct fdomain *fd = shost_priv(cmd->device->host);
+	unsigned long flags;
+
+	cmd->SCp.Status		= 0;
+	cmd->SCp.Message	= 0;
+	cmd->SCp.have_data_in	= 0;
+	cmd->SCp.sent_command	= 0;
+	cmd->SCp.phase		= in_arbitration;
+	scsi_set_resid(cmd, scsi_bufflen(cmd));
+
+	spin_lock_irqsave(sh->host_lock, flags);
+
+	fd->cur_cmd = cmd;
+
+	fdomain_make_bus_idle(fd);
+
+	/* Start arbitration */
+	outb(0, fd->base + REG_ICTL);
+	outb(0, fd->base + REG_BCTL);	/* Disable data drivers */
+	/* Set our id bit */
+	outb(BIT(cmd->device->host->this_id), fd->base + REG_SCSI_DATA_NOACK);
+	outb(ICTL_ARB, fd->base + REG_ICTL);
+	/* Start arbitration */
+	outb(ACTL_ARB | ACTL_IRQEN | PARITY_MASK, fd->base + REG_ACTL);
+
+	spin_unlock_irqrestore(sh->host_lock, flags);
+
+	return 0;
+}
+
+static int fdomain_abort(struct scsi_cmnd *cmd)
+{
+	struct Scsi_Host *sh = cmd->device->host;
+	struct fdomain *fd = shost_priv(sh);
+	unsigned long flags;
+
+	if (!fd->cur_cmd)
+		return FAILED;
+
+	spin_lock_irqsave(sh->host_lock, flags);
+
+	fdomain_make_bus_idle(fd);
+	fd->cur_cmd->SCp.phase |= aborted;
+	fd->cur_cmd->result = DID_ABORT << 16;
+
+	/* Aborts are not done well. . . */
+	fdomain_finish_cmd(fd, DID_ABORT << 16);
+	spin_unlock_irqrestore(sh->host_lock, flags);
+	return SUCCESS;
+}
+
+static int fdomain_host_reset(struct scsi_cmnd *cmd)
+{
+	struct Scsi_Host *sh = cmd->device->host;
+	struct fdomain *fd = shost_priv(sh);
+	unsigned long flags;
+
+	spin_lock_irqsave(sh->host_lock, flags);
+	fdomain_reset(fd->base);
+	spin_unlock_irqrestore(sh->host_lock, flags);
+	return SUCCESS;
+}
+
+static int fdomain_biosparam(struct scsi_device *sdev,
+			     struct block_device *bdev,	sector_t capacity,
+			     int geom[])
+{
+	unsigned char *p = scsi_bios_ptable(bdev);
+
+	if (p && p[65] == 0xaa && p[64] == 0x55 /* Partition table valid */
+	    && p[4]) {	 /* Partition type */
+		geom[0] = p[5] + 1;	/* heads */
+		geom[1] = p[6] & 0x3f;	/* sectors */
+	} else {
+		if (capacity >= 0x7e0000) {
+			geom[0] = 255;	/* heads */
+			geom[1] = 63;	/* sectors */
+		} else if (capacity >= 0x200000) {
+			geom[0] = 128;	/* heads */
+			geom[1] = 63;	/* sectors */
+		} else {
+			geom[0] = 64;	/* heads */
+			geom[1] = 32;	/* sectors */
+		}
+	}
+	geom[2] = sector_div(capacity, geom[0] * geom[1]);
+	kfree(p);
+
+	return 0;
+}
+
+static struct scsi_host_template fdomain_template = {
+	.module			= THIS_MODULE,
+	.name			= "Future Domain TMC-16x0",
+	.proc_name		= "fdomain",
+	.queuecommand		= fdomain_queue,
+	.eh_abort_handler	= fdomain_abort,
+	.eh_host_reset_handler	= fdomain_host_reset,
+	.bios_param		= fdomain_biosparam,
+	.can_queue		= 1,
+	.this_id		= 7,
+	.sg_tablesize		= 64,
+	.dma_boundary		= PAGE_SIZE - 1,
+};
+
+struct Scsi_Host *fdomain_create(int base, int irq, int this_id,
+				 struct device *dev)
+{
+	struct Scsi_Host *sh;
+	struct fdomain *fd;
+	enum chip_type chip;
+	static const char * const chip_names[] = {
+		"Unknown", "TMC-1800", "TMC-18C50", "TMC-18C30"
+	};
+	unsigned long irq_flags = 0;
+
+	chip = fdomain_identify(base);
+	if (!chip)
+		return NULL;
+
+	fdomain_reset(base);
+
+	if (fdomain_test_loopback(base))
+		return NULL;
+
+	if (!irq) {
+		dev_err(dev, "card has no IRQ assigned");
+		return NULL;
+	}
+
+	sh = scsi_host_alloc(&fdomain_template, sizeof(struct fdomain));
+	if (!sh)
+		return NULL;
+
+	if (this_id)
+		sh->this_id = this_id & 0x07;
+
+	sh->irq = irq;
+	sh->io_port = base;
+	sh->n_io_port = FDOMAIN_REGION_SIZE;
+
+	fd = shost_priv(sh);
+	fd->base = base;
+	fd->chip = chip;
+	INIT_WORK(&fd->work, fdomain_work);
+
+	if (dev_is_pci(dev) || !strcmp(dev->bus->name, "pcmcia"))
+		irq_flags = IRQF_SHARED;
+
+	if (request_irq(irq, fdomain_irq, irq_flags, "fdomain", fd))
+		goto fail_put;
+
+	shost_printk(KERN_INFO, sh, "%s chip at 0x%x irq %d SCSI ID %d\n",
+		     dev_is_pci(dev) ? "TMC-36C70 (PCI bus)" : chip_names[chip],
+		     base, irq, sh->this_id);
+
+	if (scsi_add_host(sh, dev))
+		goto fail_free_irq;
+
+	scsi_scan_host(sh);
+
+	return sh;
+
+fail_free_irq:
+	free_irq(irq, fd);
+fail_put:
+	scsi_host_put(sh);
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(fdomain_create);
+
+int fdomain_destroy(struct Scsi_Host *sh)
+{
+	struct fdomain *fd = shost_priv(sh);
+
+	cancel_work_sync(&fd->work);
+	scsi_remove_host(sh);
+	if (sh->irq)
+		free_irq(sh->irq, fd);
+	scsi_host_put(sh);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(fdomain_destroy);
+
+#ifdef CONFIG_PM_SLEEP
+static int fdomain_resume(struct device *dev)
+{
+	struct fdomain *fd = shost_priv(dev_get_drvdata(dev));
+
+	fdomain_reset(fd->base);
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(fdomain_pm_ops, NULL, fdomain_resume);
+#endif /* CONFIG_PM_SLEEP */
+
+MODULE_AUTHOR("Ondrej Zary, Rickard E. Faith");
+MODULE_DESCRIPTION("Future Domain TMC-16x0/TMC-3260 SCSI driver");
+MODULE_LICENSE("GPL");