diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index d528018e6fa8..90950d875f2d 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -663,6 +663,24 @@ config SCSI_DMX3191D
 	  To compile this driver as a module, choose M here: the
 	  module will be called dmx3191d.
 
+config SCSI_FUTURE_DOMAIN
+	tristate "Future Domain 16xx SCSI/AHA-2920A support"
+	depends on (ISA || PCI) && SCSI
+	select CHECK_SIGNATURE
+	help
+	  This is support for Future Domain's 16-bit SCSI host adapters
+	  (TMC-1660/1680, TMC-1650/1670, TMC-3260, TMC-1610M/MER/MEX) and
+	  other adapters based on the Future Domain chipsets (Quantum
+	  ISA-200S, ISA-250MG; Adaptec AHA-2920A; and at least one IBM board).
+
+	  NOTE: Newer Adaptec AHA-2920C boards use the Adaptec AIC-7850 chip
+	  and should use the aic7xxx driver ("Adaptec AIC7xxx chipset SCSI
+	  controller support"). This Future Domain driver works with the older
+	  Adaptec AHA-2920A boards with a Future Domain chip on them.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called fdomain.
+
 config SCSI_GDTH
 	tristate "Intel/ICP (former GDT SCSI Disk Array) RAID Controller support"
 	depends on PCI && SCSI
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index 8826111fdf4a..a9f80770d989 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -76,6 +76,7 @@ obj-$(CONFIG_SCSI_AIC94XX)	+= aic94xx/
 obj-$(CONFIG_SCSI_PM8001)	+= pm8001/
 obj-$(CONFIG_SCSI_ISCI)		+= isci/
 obj-$(CONFIG_SCSI_IPS)		+= ips.o
+obj-$(CONFIG_SCSI_FUTURE_DOMAIN)+= fdomain.o
 obj-$(CONFIG_SCSI_GENERIC_NCR5380) += g_NCR5380.o
 obj-$(CONFIG_SCSI_QLOGIC_FAS)	+= qlogicfas408.o	qlogicfas.o
 obj-$(CONFIG_PCMCIA_QLOGIC)	+= qlogicfas408.o
diff --git a/drivers/scsi/fdomain.c b/drivers/scsi/fdomain.c
new file mode 100644
index 000000000000..814fd1b94797
--- /dev/null
+++ b/drivers/scsi/fdomain.c
@@ -0,0 +1,992 @@
+// 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/isa.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/workqueue.h>
+#include <scsi/scsicam.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_host.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	0x08	/* Parity enabled, 0x00 = disabled */
+#define FDOMAIN_REGION_SIZE	0x10
+#define FDOMAIN_BIOS_SIZE	0x2000
+
+enum chip_type {
+	unknown		= 0x00,
+	tmc1800		= 0x01,
+	tmc18c50	= 0x02,
+	tmc18c30	= 0x03,
+};
+
+enum {
+	in_arbitration	= 0x02,
+	in_selection	= 0x04,
+	in_other	= 0x08,
+	disconnect	= 0x10,
+	aborted		= 0x20,
+	sent_ident	= 0x40,
+};
+
+enum in_port_type {
+	Read_SCSI_Data	 =  0,
+	SCSI_Status	 =  1,
+	TMC_Status	 =  2,
+	FIFO_Status	 =  3,	/* tmc18c50/tmc18c30 only */
+	Interrupt_Cond	 =  4,	/* tmc18c50/tmc18c30 only */
+	LSB_ID_Code	 =  5,
+	MSB_ID_Code	 =  6,
+	Read_Loopback	 =  7,
+	SCSI_Data_NoACK	 =  8,
+	Interrupt_Status =  9,
+	Configuration1	 = 10,
+	Configuration2	 = 11,	/* tmc18c50/tmc18c30 only */
+	Read_FIFO	 = 12,
+	FIFO_Data_Count	 = 14
+};
+
+enum out_port_type {
+	Write_SCSI_Data	=  0,
+	SCSI_Cntl	=  1,
+	Interrupt_Cntl	=  2,
+	SCSI_Mode_Cntl	=  3,
+	TMC_Cntl	=  4,
+	Memory_Cntl	=  5,	/* tmc18c50/tmc18c30 only */
+	Write_Loopback	=  7,
+	IO_Control	= 11,	/* tmc18c30 only */
+	Write_FIFO	= 12
+};
+
+struct fdomain {
+	int base;
+	struct scsi_cmnd *cur_cmd;
+	enum chip_type chip;
+	struct work_struct work;
+};
+
+#ifndef PCMCIA
+
+#ifdef CONFIG_ISA
+#define MAXBOARDS_PARAM 4
+static int io[MAXBOARDS_PARAM] = { 0, 0, 0, 0 };
+module_param_hw_array(io, int, ioport, NULL, 0);
+MODULE_PARM_DESC(io, "base I/O address of controller (0x140, 0x150, 0x160, 0x170)");
+
+static int irq[MAXBOARDS_PARAM] = { 0, 0, 0, 0 };
+module_param_hw_array(irq, int, irq, NULL, 0);
+MODULE_PARM_DESC(irq, "IRQ of controller (0=auto [default])");
+
+static int scsi_id[MAXBOARDS_PARAM] = { 0, 0, 0, 0 };
+module_param_hw_array(scsi_id, int, other, NULL, 0);
+MODULE_PARM_DESC(scsi_id, "SCSI ID of controller (default = 6)");
+
+static unsigned long addresses[] = {
+	0xc8000,
+	0xca000,
+	0xce000,
+	0xde000,
+};
+#define ADDRESS_COUNT ARRAY_SIZE(addresses)
+
+static unsigned short ports[] = { 0x140, 0x150, 0x160, 0x170 };
+#define PORT_COUNT ARRAY_SIZE(ports)
+
+static unsigned short irqs[] = { 3, 5, 10, 11, 12, 14, 15, 0 };
+#endif /* CONFIG_ISA */
+#endif /* !PCMCIA */
+
+/* This driver works *ONLY* for Future Domain cards using the TMC-1800,
+ * TMC-18C50, or TMC-18C30 chip.  This includes models TMC-1650, 1660, 1670,
+ * and 1680. These are all 16-bit cards.
+ *
+ * The following BIOS signature signatures are for boards which do *NOT*
+ * work with this driver (these TMC-8xx and TMC-9xx boards may work with the
+ * Seagate driver):
+ *
+ * FUTURE DOMAIN CORP. (C) 1986-1988 V4.0I 03/16/88
+ * FUTURE DOMAIN CORP. (C) 1986-1989 V5.0C2/14/89
+ * FUTURE DOMAIN CORP. (C) 1986-1989 V6.0A7/28/89
+ * FUTURE DOMAIN CORP. (C) 1986-1990 V6.0105/31/90
+ * FUTURE DOMAIN CORP. (C) 1986-1990 V6.0209/18/90
+ * FUTURE DOMAIN CORP. (C) 1986-1990 V7.009/18/90
+ * FUTURE DOMAIN CORP. (C) 1992 V8.00.004/02/92
+ *
+ * (The cards which do *NOT* work are all 8-bit cards -- although some of
+ * them have a 16-bit form-factor, the upper 8-bits are used only for IRQs
+ * and are *NOT* used for data. You can tell the difference by following
+ * the tracings on the circuit board -- if only the IRQ lines are involved,
+ * you have a "8-bit" card, and should *NOT* use this driver.)
+ */
+
+struct signature {
+	const char *signature;
+	int offset;
+	int length;
+	int bios_major;
+	int bios_minor;
+	int flag; /* 1 = PCI_bus, 2 = ISA_200S, 3 = ISA_250MG, 4 = ISA_200S */
+};
+#ifndef PCMCIA
+#ifdef CONFIG_ISA
+static struct signature signatures[] = {
+/*          1         2         3         4         5         6 */
+/* 123456789012345678901234567890123456789012345678901234567890 */
+{ "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89",	 5, 50,  2,  0, 0 },
+{ "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V1.07/28/89",	 5, 50,  2,  0, 0 },
+{ "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 72, 50,  2,  0, 2 },
+{ "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.0",	73, 43,  2,  0, 3 },
+{ "FUTURE DOMAIN CORP. (C) 1991 1800-V2.0.",		72, 39,  2,  0, 4 },
+{ "FUTURE DOMAIN CORP. (C) 1992 V3.00.004/02/92",	 5, 44,  3,  0, 0 },
+{ "FUTURE DOMAIN TMC-18XX (C) 1993 V3.203/12/93",	 5, 44,  3,  2, 0 },
+{ "IBM F1 P2 BIOS v1.0104/29/93",			 5, 28,  3, -1, 0 },
+{ "Future Domain Corp. V1.0008/18/93",			 5, 33,  3,  4, 0 },
+{ "Future Domain Corp. V1.0008/18/93",			26, 33,  3,  4, 1 },
+{ "Adaptec AHA-2920 PCI-SCSI Card",			42, 31,  3, -1, 1 },
+{ "IBM F1 P264/32",					 5, 14,  3, -1, 1 },
+/* This next signature may not be a 3.5 bios */
+{ "Future Domain Corp. V2.0108/18/93",			 5, 33,  3,  5, 0 },
+{ "FUTURE DOMAIN CORP.  V3.5008/18/93",			 5, 34,  3,  5, 0 },
+{ "FUTURE DOMAIN 18c30/18c50/1800 (C) 1994 V3.5",	 5, 44,  3,  5, 0 },
+{ "FUTURE DOMAIN CORP.  V3.6008/18/93",			 5, 34,  3,  6, 0 },
+{ "FUTURE DOMAIN CORP.  V3.6108/18/93",			 5, 34,  3,  6, 0 },
+{ "FUTURE DOMAIN TMC-18XX",				 5, 22, -1, -1, 0 },
+/* Note that the last line will match a "generic" 18XX bios.  Because
+ * Future Domain has changed the host SCSI ID and/or the location of the
+ * geometry information in the on-board RAM area for each of the first
+ * three BIOS's, it is still important to enter a fully qualified
+ * signature in the table for any new BIOS's (after the host SCSI ID and
+ * geometry location are verified).
+ */
+};
+#define SIGNATURE_COUNT ARRAY_SIZE(signatures)
+#endif /* CONFIG_ISA */
+#endif /* !PCMCIA */
+
+static inline void fdomain_make_bus_idle(struct fdomain *fd)
+{
+	outb(0, fd->base + SCSI_Cntl);
+	outb(0, fd->base + SCSI_Mode_Cntl);
+	if (fd->chip == tmc18c50 || fd->chip == tmc18c30)
+		/* Clear forced intr. */
+		outb(0x21 | PARITY_MASK, fd->base + TMC_Cntl);
+	else
+		outb(0x01 | PARITY_MASK, fd->base + TMC_Cntl);
+}
+
+static enum chip_type fdomain_identify(int port)
+{
+	u16 id = inb(port + LSB_ID_Code) | inb(port + MSB_ID_Code) << 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.
+	 * (User reports say this works, so we should switch to it.)
+	 */
+	outb(0x80, port + IO_Control);
+	if ((inb(port + Configuration2) & 0x80) == 0x80) {
+		outb(0x00, port + IO_Control);
+		if ((inb(port + Configuration2) & 0x80) == 0x00)
+			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 + Write_Loopback);
+		if (inb(base + Read_Loopback) != i)
+			return 1;
+	}
+
+	return 0;
+}
+
+void fdomain_reset(int base)
+{
+	outb(1, base + SCSI_Cntl);
+	mdelay(20);
+	outb(0, base + SCSI_Cntl);
+	mdelay(1150);
+	outb(0, base + SCSI_Mode_Cntl);
+	outb(PARITY_MASK, base + TMC_Cntl);
+}
+
+static int fdomain_select(struct Scsi_Host *sh, int target)
+{
+	int status;
+	unsigned long timeout;
+	struct fdomain *fd = shost_priv(sh);
+
+	outb(0x82, fd->base + SCSI_Cntl); /* Bus Enable + Select */
+	outb(BIT(sh->this_id) | BIT(target), fd->base + SCSI_Data_NoACK);
+
+	/* Stop arbitration and enable parity */
+	outb(PARITY_MASK, fd->base + TMC_Cntl);
+
+	timeout = 350;	/* 350 msec */
+
+	do {
+		status = inb(fd->base + SCSI_Status); /* Read adapter status */
+		if (status & 1) {	/* Busy asserted */
+			/* Enable SCSI Bus */
+			/* (on error, should make bus idle with 0) */
+			outb(0x80, fd->base + SCSI_Cntl);
+			return 0;
+		}
+		mdelay(1);
+	} while (--timeout);
+	fdomain_make_bus_idle(fd);
+	return 1;
+}
+
+static void fdomain_finish_cmd(struct fdomain *fd, int result)
+{
+	outb(0x00, fd->base + Interrupt_Cntl);
+	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 int len;
+
+	while ((len = inw(fd->base + FIFO_Data_Count)) > 0) {
+		if (len > cmd->SCp.this_residual)
+			len = cmd->SCp.this_residual;
+		if (len == 1)
+			*cmd->SCp.ptr = inb(fd->base + Read_FIFO);
+		if (len > 1) {
+			insw(fd->base + Read_FIFO, cmd->SCp.ptr, len >> 1);
+			len = round_down(len, 2);
+		}
+		cmd->SCp.ptr += len;
+		cmd->SCp.this_residual -= len;
+		if (!cmd->SCp.this_residual && cmd->SCp.buffers_residual) {
+			--cmd->SCp.buffers_residual;
+			++cmd->SCp.buffer;
+			cmd->SCp.ptr = sg_virt(cmd->SCp.buffer);
+			cmd->SCp.this_residual = cmd->SCp.buffer->length;
+		}
+	}
+}
+
+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 int len;
+
+	while ((len = FIFO_Size - inw(fd->base + FIFO_Data_Count)) > 512) {
+		if (len > cmd->SCp.this_residual)
+			len = cmd->SCp.this_residual;
+		if (len == 1)
+			outb(*cmd->SCp.ptr, fd->base + Write_FIFO);
+		if (len > 1) {
+			outsw(fd->base + Write_FIFO, cmd->SCp.ptr, len >> 1);
+			len = round_down(len, 2);
+		}
+		cmd->SCp.ptr += len;
+		cmd->SCp.this_residual -= len;
+		if (!cmd->SCp.this_residual && cmd->SCp.buffers_residual) {
+			--cmd->SCp.buffers_residual;
+			++cmd->SCp.buffer;
+			cmd->SCp.ptr = sg_virt(cmd->SCp.buffer);
+			cmd->SCp.this_residual = cmd->SCp.buffer->length;
+		} else if (!cmd->SCp.this_residual &&
+			   !cmd->SCp.buffers_residual)
+			break;
+	}
+}
+
+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;
+
+	/* Abort calls fdomain_finish_cmd, so we do nothing here. */
+	if (cmd->SCp.phase & aborted)
+		;
+
+	spin_lock_irqsave(sh->host_lock, flags);
+
+	if (cmd->SCp.phase & in_arbitration) {
+		status = inb(fd->base + TMC_Status);
+		if (!(status & 0x02)) {
+			fdomain_finish_cmd(fd, DID_BUS_BUSY << 16);
+			goto out;
+		}
+		cmd->SCp.phase = in_selection;
+
+		outb(0x40 | FIFO_COUNT, fd->base + Interrupt_Cntl);
+		outb(0x82, fd->base + SCSI_Cntl); /* Bus Enable + Select */
+		outb(BIT(cmd->device->host->this_id) |
+		     BIT(scmd_id(cmd)), fd->base + SCSI_Data_NoACK);
+		/* Stop arbitration and enable parity */
+		outb(0x10 | PARITY_MASK, fd->base + TMC_Cntl);
+		goto out;
+	} else if (cmd->SCp.phase & in_selection) {
+		status = inb(fd->base + SCSI_Status);
+		if (!(status & 0x01)) {
+			/* 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(0x10 | PARITY_MASK, fd->base + TMC_Cntl);
+		}
+		cmd->SCp.phase = in_other;
+		outb(0x90 | FIFO_COUNT, fd->base + Interrupt_Cntl);
+		outb(0x80, fd->base + SCSI_Cntl);
+		goto out;
+	}
+
+	/* cur_cmd->SCp.phase == in_other: this is the body of the routine */
+	status = inb(fd->base + SCSI_Status);
+
+	if (status & 0x10) {	/* REQ */
+		switch (status & 0x0e) {
+		case 0x08:	/* COMMAND OUT */
+			outb(cmd->cmnd[cmd->SCp.sent_command++],
+			     fd->base + Write_SCSI_Data);
+			break;
+		case 0x00:	/* DATA OUT -- tmc18c50/tmc18c30 only */
+			if (fd->chip != tmc1800 && !cmd->SCp.have_data_in) {
+				cmd->SCp.have_data_in = -1;
+				outb(0xd0 | PARITY_MASK, fd->base + TMC_Cntl);
+			}
+			break;
+		case 0x04:	/* DATA IN -- tmc18c50/tmc18c30 only */
+			if (fd->chip != tmc1800 && !cmd->SCp.have_data_in) {
+				cmd->SCp.have_data_in = 1;
+				outb(0x90 | PARITY_MASK, fd->base + TMC_Cntl);
+			}
+			break;
+		case 0x0c:	/* STATUS IN */
+			cmd->SCp.Status = inb(fd->base + Read_SCSI_Data);
+			break;
+		case 0x0a:	/* MESSAGE OUT */
+			outb(MESSAGE_REJECT, fd->base + Write_SCSI_Data);
+			break;
+		case 0x0e:	/* MESSAGE IN */
+			cmd->SCp.Message = inb(fd->base + Read_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(0xd0 | PARITY_MASK, fd->base + TMC_Cntl);
+		} else {
+			cmd->SCp.have_data_in = 1;
+			outb(0x90 | PARITY_MASK, fd->base + TMC_Cntl);
+		}
+	}
+
+	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(0xd0 | FIFO_COUNT, fd->base + Interrupt_Cntl);
+			outb(0x00, fd->base + SCSI_Cntl);
+		} else
+			outb(0x90 | FIFO_COUNT, fd->base + Interrupt_Cntl);
+	}
+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 + TMC_Status) & 0x01) == 0)
+		return IRQ_NONE;
+
+	outb(0x00, fd->base + Interrupt_Cntl);
+
+	/* 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;
+
+	/* Initialize static data */
+	if (scsi_sg_count(cmd)) {
+		cmd->SCp.buffer = scsi_sglist(cmd);
+		cmd->SCp.ptr = sg_virt(cmd->SCp.buffer);
+		cmd->SCp.this_residual = cmd->SCp.buffer->length;
+		cmd->SCp.buffers_residual = scsi_sg_count(cmd) - 1;
+	} else {
+		cmd->SCp.ptr = NULL;
+		cmd->SCp.this_residual = 0;
+		cmd->SCp.buffer	= NULL;
+		cmd->SCp.buffers_residual = 0;
+	}
+	cmd->SCp.Status		= 0;
+	cmd->SCp.Message	= 0;
+	cmd->SCp.have_data_in	= 0;
+	cmd->SCp.sent_command	= 0;
+	cmd->SCp.phase		= in_arbitration;
+
+	spin_lock_irqsave(sh->host_lock, flags);
+
+	fd->cur_cmd = cmd;
+
+	fdomain_make_bus_idle(fd);
+
+	/* Start arbitration */
+	outb(0x00, fd->base + Interrupt_Cntl);
+	outb(0x00, fd->base + SCSI_Cntl);	/* Disable data drivers */
+	outb(BIT(cmd->device->host->this_id),
+	     fd->base + SCSI_Data_NoACK);	/* Set our id bit */
+	outb(0x20, fd->base + Interrupt_Cntl);
+	outb(0x14 | PARITY_MASK, fd->base + TMC_Cntl);	/* Start arbitration */
+
+	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;
+}
+
+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_lock_irqsave(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;
+}
+
+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,
+				 unsigned long bios_base, struct signature *sig,
+				 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"
+	};
+
+	chip = fdomain_identify(base);
+	if (!chip)
+		return NULL;
+
+	fdomain_reset(base);
+
+	if (fdomain_test_loopback(base))
+		return NULL;
+#ifndef PCMCIA
+	if (!irq) {
+		if (dev_is_pci(dev)) {
+			dev_err(dev, "PCI card has no IRQ assigned");
+			return NULL;
+		}
+#ifdef CONFIG_ISA
+		irq = irqs[(inb(base + Configuration1) & 0x0e) >> 1];
+#endif /* CONFIG_ISA */
+	}
+#endif /* !PCMCIA */
+	sh = scsi_host_alloc(&fdomain_template, sizeof(struct fdomain));
+	if (!sh)
+		return NULL;
+
+	if (this_id)
+		sh->this_id = this_id & 0x07;
+	else if (sig && (sig->bios_major > 0) &&
+		(sig->bios_major < 3 || sig->bios_minor < 2))
+		sh->this_id = 6;
+
+	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 (request_irq(irq, fdomain_irq, dev_is_pci(dev) ? IRQF_SHARED : 0,
+			  "fdomain", fd))
+		goto fail_put;
+
+	if (!sig || (sig->bios_major < 0 && sig->bios_minor < 0))
+		shost_printk(KERN_INFO, sh, "No BIOS; using SCSI ID %d\n",
+			     sh->this_id);
+	else {
+		char v1 = (sig->bios_major >= 0) ? '0' + sig->bios_major : '?';
+		char v2 = (sig->bios_minor >= 0) ? '0' + sig->bios_minor : '?';
+
+		shost_printk(KERN_INFO, sh, "BIOS version %c.%c at 0x%lx using SCSI ID %d\n",
+			     v1, v2, bios_base, sh->this_id);
+	}
+	shost_printk(KERN_INFO, sh, "%s chip at 0x%x irq %d\n",
+		     dev_is_pci(dev) ? "TMC-36C70 (PCI bus)" : chip_names[chip],
+		     base, irq);
+
+	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;
+}
+
+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;
+}
+
+#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);
+#define FDOMAIN_PM_OPS	(&fdomain_pm_ops)
+#else
+#define FDOMAIN_PM_OPS	NULL
+#endif /* CONFIG_PM_SLEEP */
+
+#ifndef PCMCIA
+static int fdomain_pci_probe(struct pci_dev *pdev,
+			     const struct pci_device_id *d)
+{
+	int err;
+	struct Scsi_Host *sh;
+
+	err = pci_enable_device(pdev);
+	if (err)
+		goto fail;
+
+	err = pci_request_regions(pdev, "fdomain");
+	if (err)
+		goto disable_device;
+
+	err = -ENODEV;
+	if (pci_resource_len(pdev, 0) == 0)
+		goto release_region;
+
+	sh = fdomain_create(pci_resource_start(pdev, 0), pdev->irq, 7, 0, NULL,
+			    &pdev->dev);
+	if (!sh)
+		goto release_region;
+
+	pci_set_drvdata(pdev, sh);
+	return 0;
+
+release_region:
+	pci_release_regions(pdev);
+disable_device:
+	pci_disable_device(pdev);
+fail:
+	return err;
+}
+
+static void fdomain_pci_remove(struct pci_dev *pdev)
+{
+	struct Scsi_Host *sh = pci_get_drvdata(pdev);
+
+	fdomain_destroy(sh);
+	pci_release_regions(pdev);
+	pci_disable_device(pdev);
+}
+
+static struct pci_device_id fdomain_pci_table[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_FD, PCI_DEVICE_ID_FD_36C70) },
+	{}
+};
+MODULE_DEVICE_TABLE(pci, fdomain_pci_table);
+
+static struct pci_driver fdomain_pci_driver = {
+	.name		= "fdomain",
+	.id_table	= fdomain_pci_table,
+	.probe		= fdomain_pci_probe,
+	.remove		= fdomain_pci_remove,
+	.driver.pm	= FDOMAIN_PM_OPS,
+};
+
+#ifdef CONFIG_ISA
+static int fdomain_isa_match(struct device *dev, unsigned int ndev)
+{
+	struct Scsi_Host *sh;
+	int i, base = 0, irq = 0, bios_base = 0;
+	struct signature *sig = NULL;
+	void __iomem *p;
+	static int saved_bios_base;
+	static struct signature *saved_sig;
+
+	if (ndev < ADDRESS_COUNT) {	/* scan supported ISA BIOS addresses */
+		p = ioremap(addresses[ndev], FDOMAIN_BIOS_SIZE);
+		if (!p)
+			return 0;
+		for (i = 0; i < SIGNATURE_COUNT; i++)
+			if (check_signature(p + signatures[i].offset,
+					    signatures[i].signature,
+					    signatures[i].length))
+				break;
+		if (i == SIGNATURE_COUNT)	/* no signature found */
+			goto fail_unmap;
+		if (signatures[i].flag == 1)	/* ignore PCI devices */
+			goto fail_unmap;
+		sig = &signatures[i];
+		bios_base = addresses[ndev];
+		/* read I/O base from BIOS area */
+		if (sig->bios_major == 2) {
+			switch (sig->flag) {
+			case 2:	/* ISA_200S */
+			case 3:	/* ISA_250MG */
+				base = readb(p + 0x1fa2) +
+				      (readb(p + 0x1fa3) << 8);
+				break;
+			case 4:	/* ISA_200S (another one) */
+				base = readb(p + 0x1fa3) +
+				      (readb(p + 0x1fa4) << 8);
+				break;
+			default:
+				base = readb(p + 0x1fcc) +
+				      (readb(p + 0x1fcd) << 8);
+				break;
+			}
+		}
+		iounmap(p);
+		if (!base) {	/* no I/O base in BIOS area */
+			/* save BIOS info for later use in port probing */
+			saved_bios_base = bios_base;
+			saved_sig = sig;
+			return 0;
+		}
+	} else	/* scan supported I/O ports */
+		base = ports[ndev - ADDRESS_COUNT];
+
+	/* use saved BIOS details if present */
+	if (!bios_base && saved_bios_base) {
+		bios_base = saved_bios_base;
+		sig = saved_sig;
+	}
+
+	if (!request_region(base, FDOMAIN_REGION_SIZE, "fdomain"))
+		return 0;
+
+	sh = fdomain_create(base, irq, 0, bios_base, sig, dev);
+	if (!sh) {
+		release_region(base, FDOMAIN_REGION_SIZE);
+		return 0;
+	}
+
+	dev_set_drvdata(dev, sh);
+	return 1;
+fail_unmap:
+	iounmap(p);
+	return 0;
+}
+
+static int fdomain_isa_param_match(struct device *dev, unsigned int ndev)
+{
+	struct Scsi_Host *sh;
+
+	if (!io[ndev])
+		return 0;
+
+	if (!request_region(io[ndev], FDOMAIN_REGION_SIZE, "fdomain")) {
+		dev_err(dev, "base 0x%x already in use", io[ndev]);
+		return 0;
+	}
+
+	sh = fdomain_create(io[ndev], irq[ndev], scsi_id[ndev], 0, NULL, dev);
+	if (!sh) {
+		dev_err(dev, "controller not found at base 0x%x", io[ndev]);
+		release_region(io[ndev], FDOMAIN_REGION_SIZE);
+		return 0;
+	}
+
+	dev_set_drvdata(dev, sh);
+	return 1;
+}
+
+static int fdomain_isa_remove(struct device *dev, unsigned int ndev)
+{
+	struct Scsi_Host *sh = dev_get_drvdata(dev);
+	int base = sh->io_port;
+
+	fdomain_destroy(sh);
+	release_region(base, FDOMAIN_REGION_SIZE);
+	dev_set_drvdata(dev, NULL);
+	return 0;
+}
+
+static struct isa_driver fdomain_isa_driver = {
+	.match		= fdomain_isa_match,
+	.remove		= fdomain_isa_remove,
+	.driver = {
+		.name	= "fdomain",
+		.pm	= FDOMAIN_PM_OPS,
+	},
+};
+#endif /* CONFIG_ISA */
+
+static bool pci_registered, isa_registered;
+
+static int __init fdomain_init(void)
+{
+	int ret;
+#ifdef CONFIG_ISA
+	struct pci_dev *pdev;
+	int isa_probe_count = ADDRESS_COUNT + PORT_COUNT;
+#endif /* CONFIG_ISA */
+
+	ret = pci_register_driver(&fdomain_pci_driver);
+	if (!ret)
+		pci_registered = 1;
+#ifdef CONFIG_ISA
+	/* don't autoprobe ISA if a PCI card is present */
+	pdev = pci_get_device(PCI_VENDOR_ID_FD, PCI_DEVICE_ID_FD_36C70, NULL);
+	if (pdev && !io[0]) {
+		pci_dev_put(pdev);
+		return 0;
+	}
+
+	if (io[0]) {	/* use module parameters if present */
+		fdomain_isa_driver.match = fdomain_isa_param_match;
+		isa_probe_count = MAXBOARDS_PARAM;
+	}
+
+	ret = isa_register_driver(&fdomain_isa_driver, isa_probe_count);
+	if (!ret)
+		isa_registered = 1;
+#endif /* CONFIG_ISA */
+
+	return !(pci_registered || isa_registered);
+}
+
+static void __exit fdomain_exit(void)
+{
+	if (pci_registered)
+		pci_unregister_driver(&fdomain_pci_driver);
+#ifdef CONFIG_ISA
+	if (isa_registered)
+		isa_unregister_driver(&fdomain_isa_driver);
+#endif /* CONFIG_ISA */
+}
+
+module_init(fdomain_init);
+module_exit(fdomain_exit);
+
+MODULE_AUTHOR("Ondrej Zary, Rickard E. Faith");
+MODULE_DESCRIPTION("Future Domain TMC-16x0/TMC-3260 SCSI driver");
+MODULE_LICENSE("GPL");
+#endif /* !PCMCIA */
diff --git a/drivers/scsi/fdomain.h b/drivers/scsi/fdomain.h
new file mode 100644
index 000000000000..7370b836cbc1
--- /dev/null
+++ b/drivers/scsi/fdomain.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+extern struct Scsi_Host *fdomain_create(int port_base, int irq, int this_id,
+					int bios_base, void *sig,
+					struct device *dev);
+extern void fdomain_reset(int port_base);
+extern int fdomain_destroy(struct Scsi_Host *sh);
diff --git a/drivers/scsi/pcmcia/Kconfig b/drivers/scsi/pcmcia/Kconfig
index 2d435f105b16..ecc855c550aa 100644
--- a/drivers/scsi/pcmcia/Kconfig
+++ b/drivers/scsi/pcmcia/Kconfig
@@ -19,6 +19,15 @@ config PCMCIA_AHA152X
 	  To compile this driver as a module, choose M here: the
 	  module will be called aha152x_cs.
 
+config PCMCIA_FDOMAIN
+	tristate "Future Domain PCMCIA support"
+	help
+	  Say Y here if you intend to attach this type of PCMCIA SCSI host
+	  adapter to your computer.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called fdomain_cs.
+
 config PCMCIA_NINJA_SCSI
 	tristate "NinjaSCSI-3 / NinjaSCSI-32Bi (16bit) PCMCIA support"
 	depends on !64BIT
diff --git a/drivers/scsi/pcmcia/Makefile b/drivers/scsi/pcmcia/Makefile
index a5a24dd44e7e..ba1f126f9b17 100644
--- a/drivers/scsi/pcmcia/Makefile
+++ b/drivers/scsi/pcmcia/Makefile
@@ -4,9 +4,11 @@ ccflags-y		:= -I $(srctree)/drivers/scsi
 
 # 16-bit client drivers
 obj-$(CONFIG_PCMCIA_QLOGIC)	+= qlogic_cs.o
+obj-$(CONFIG_PCMCIA_FDOMAIN)	+= fdomain_cs.o
 obj-$(CONFIG_PCMCIA_AHA152X)	+= aha152x_cs.o
 obj-$(CONFIG_PCMCIA_NINJA_SCSI)	+= nsp_cs.o
 obj-$(CONFIG_PCMCIA_SYM53C500)	+= sym53c500_cs.o
 
 aha152x_cs-objs	:= aha152x_stub.o aha152x_core.o
+fdomain_cs-objs	:= fdomain_stub.o fdomain_core.o
 qlogic_cs-objs	:= qlogic_stub.o
diff --git a/drivers/scsi/pcmcia/fdomain_core.c b/drivers/scsi/pcmcia/fdomain_core.c
new file mode 100644
index 000000000000..a48913791868
--- /dev/null
+++ b/drivers/scsi/pcmcia/fdomain_core.c
@@ -0,0 +1,2 @@
+#define PCMCIA 1
+#include "fdomain.c"
diff --git a/drivers/scsi/pcmcia/fdomain_stub.c b/drivers/scsi/pcmcia/fdomain_stub.c
new file mode 100644
index 000000000000..eee1379ad67b
--- /dev/null
+++ b/drivers/scsi/pcmcia/fdomain_stub.c
@@ -0,0 +1,89 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MPL-1.1)
+/*
+ * Driver for Future Domain-compatible PCMCIA SCSI cards
+ * Copyright 2019 Ondrej Zary
+ *
+ * The initial developer of the original code is David A. Hinds
+ * <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
+ * are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <scsi/scsi_host.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+#include "fdomain.h"
+
+MODULE_AUTHOR("Ondrej Zary, David Hinds");
+MODULE_DESCRIPTION("Future Domain PCMCIA SCSI driver");
+MODULE_LICENSE("Dual MPL/GPL");
+
+static int fdomain_config_check(struct pcmcia_device *p_dev, void *priv_data)
+{
+	p_dev->io_lines = 10;
+	p_dev->resource[0]->end = 0x10;
+	p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
+	p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
+	return pcmcia_request_io(p_dev);
+}
+
+static int fdomain_probe(struct pcmcia_device *link)
+{
+	int ret;
+	struct Scsi_Host *sh;
+
+	link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
+	link->config_regs = PRESENT_OPTION;
+
+	ret = pcmcia_loop_config(link, fdomain_config_check, NULL);
+	if (ret)
+		return ret;
+
+	ret = pcmcia_enable_device(link);
+	if (ret)
+		goto fail;
+
+	sh = fdomain_create(link->resource[0]->start, link->irq, 7, 0, NULL,
+			    &link->dev);
+	if (!sh) {
+		dev_err(&link->dev, "Controller initialization failed");
+		ret = -ENODEV;
+		goto fail;
+	}
+
+	link->priv = sh;
+
+	return 0;
+
+fail:
+	pcmcia_disable_device(link);
+	return ret;
+}
+
+static void fdomain_remove(struct pcmcia_device *link)
+{
+	fdomain_destroy(link->priv);
+	pcmcia_disable_device(link);
+}
+
+static const struct pcmcia_device_id fdomain_ids[] = {
+	PCMCIA_DEVICE_PROD_ID12("IBM Corp.", "SCSI PCMCIA Card", 0xe3736c88,
+				0x859cad20),
+	PCMCIA_DEVICE_PROD_ID1("SCSI PCMCIA Adapter Card", 0x8dacb57e),
+	PCMCIA_DEVICE_PROD_ID12(" SIMPLE TECHNOLOGY Corporation",
+				"SCSI PCMCIA Credit Card Controller",
+				0x182bdafe, 0xc80d106f),
+	PCMCIA_DEVICE_NULL,
+};
+MODULE_DEVICE_TABLE(pcmcia, fdomain_ids);
+
+static struct pcmcia_driver fdomain_cs_driver = {
+	.owner		= THIS_MODULE,
+	.name		= "fdomain_cs",
+	.probe		= fdomain_probe,
+	.remove		= fdomain_remove,
+	.id_table       = fdomain_ids,
+};
+
+module_pcmcia_driver(fdomain_cs_driver);
