Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-tc

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-tc:
  [EISA] EISA registration with !CONFIG_EISA
  [TC] pmagb-b-fb: Convert to the driver model
  [TC] dec_esp: Driver model for the PMAZ-A
  [TC] mips: pmag-ba-fb: Convert to the driver model
  [TC] defxx: TURBOchannel support
  [TC] TURBOchannel support for the DECstation
  [TC] MIPS: TURBOchannel resources off-by-one fix
  [TC] MIPS: TURBOchannel update to the driver model

33 files changed, 1537 insertions, 906 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index f2a79481f1c1..a6c1ebd18d0f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3293,6 +3293,11 @@ L:	vtun@office.satix.net
 W:	http://vtun.sourceforge.net/tun
 S:	Maintained
 
+TURBOCHANNEL SUBSYSTEM
+P:	Maciej W. Rozycki
+M:	macro@linux-mips.org
+S:	Maintained
+
 U14-34F SCSI DRIVER
 P:	Dario Ballabio
 M:	ballabio_dario@emc.com
diff --git a/arch/mips/dec/Makefile b/arch/mips/dec/Makefile
index ed181fdc3ac9..8b790c2900d5 100644
--- a/arch/mips/dec/Makefile
+++ b/arch/mips/dec/Makefile
@@ -6,6 +6,7 @@ obj-y		:= ecc-berr.o int-handler.o ioasic-irq.o kn01-berr.o \
 		   kn02-irq.o kn02xa-berr.o reset.o setup.o time.o
 
 obj-$(CONFIG_PROM_CONSOLE)	+= promcon.o
+obj-$(CONFIG_TC)		+= tc.o
 obj-$(CONFIG_CPU_HAS_WB)	+= wbflush.o
 
 EXTRA_AFLAGS := $(CFLAGS)
diff --git a/arch/mips/dec/prom/identify.c b/arch/mips/dec/prom/identify.c
index 81d5e878ddce..c4e3c1ea0d48 100644
--- a/arch/mips/dec/prom/identify.c
+++ b/arch/mips/dec/prom/identify.c
@@ -88,6 +88,7 @@ static inline void prom_init_kn02(void)
 {
 	dec_kn_slot_base = KN02_SLOT_BASE;
 	dec_kn_slot_size = KN02_SLOT_SIZE;
+	dec_tc_bus = 1;
 
 	dec_rtc_base = (void *)CKSEG1ADDR(dec_kn_slot_base + KN02_RTC);
 }
@@ -96,6 +97,7 @@ static inline void prom_init_kn02xa(void)
 {
 	dec_kn_slot_base = KN02XA_SLOT_BASE;
 	dec_kn_slot_size = IOASIC_SLOT_SIZE;
+	dec_tc_bus = 1;
 
 	ioasic_base = (void *)CKSEG1ADDR(dec_kn_slot_base + IOASIC_IOCTL);
 	dec_rtc_base = (void *)CKSEG1ADDR(dec_kn_slot_base + IOASIC_TOY);
@@ -105,6 +107,7 @@ static inline void prom_init_kn03(void)
 {
 	dec_kn_slot_base = KN03_SLOT_BASE;
 	dec_kn_slot_size = IOASIC_SLOT_SIZE;
+	dec_tc_bus = 1;
 
 	ioasic_base = (void *)CKSEG1ADDR(dec_kn_slot_base + IOASIC_IOCTL);
 	dec_rtc_base = (void *)CKSEG1ADDR(dec_kn_slot_base + IOASIC_TOY);
diff --git a/arch/mips/dec/setup.c b/arch/mips/dec/setup.c
index 1058e2f409bb..b8a5e75ba0ab 100644
--- a/arch/mips/dec/setup.c
+++ b/arch/mips/dec/setup.c
@@ -53,6 +53,8 @@ unsigned long dec_kn_slot_base, dec_kn_slot_size;
 EXPORT_SYMBOL(dec_kn_slot_base);
 EXPORT_SYMBOL(dec_kn_slot_size);
 
+int dec_tc_bus;
+
 spinlock_t ioasic_ssr_lock;
 
 volatile u32 *ioasic_base;
diff --git a/arch/mips/dec/tc.c b/arch/mips/dec/tc.c
new file mode 100644
index 000000000000..732027c79834
--- /dev/null
+++ b/arch/mips/dec/tc.c
@@ -0,0 +1,95 @@
+/*
+ *	TURBOchannel architecture calls.
+ *
+ *	Copyright (c) Harald Koerfgen, 1998
+ *	Copyright (c) 2001, 2003, 2005, 2006  Maciej W. Rozycki
+ *	Copyright (c) 2005  James Simmons
+ *
+ *	This file is subject to the terms and conditions of the GNU
+ *	General Public License.  See the file "COPYING" in the main
+ *	directory of this archive for more details.
+ */
+#include <linux/compiler.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/tc.h>
+#include <linux/types.h>
+
+#include <asm/addrspace.h>
+#include <asm/bootinfo.h>
+#include <asm/paccess.h>
+
+#include <asm/dec/interrupts.h>
+#include <asm/dec/prom.h>
+#include <asm/dec/system.h>
+
+/*
+ * Protected read byte from TURBOchannel slot space.
+ */
+int tc_preadb(u8 *valp, void __iomem *addr)
+{
+	return get_dbe(*valp, (u8 *)addr);
+}
+
+/*
+ * Get TURBOchannel bus information as specified by the spec, plus
+ * the slot space base address and the number of slots.
+ */
+int __init tc_bus_get_info(struct tc_bus *tbus)
+{
+	if (!dec_tc_bus)
+		return -ENXIO;
+
+	memcpy(&tbus->info, rex_gettcinfo(), sizeof(tbus->info));
+	tbus->slot_base = CPHYSADDR((long)rex_slot_address(0));
+
+	switch (mips_machtype) {
+	case MACH_DS5000_200:
+		tbus->num_tcslots = 7;
+		break;
+	case MACH_DS5000_2X0:
+	case MACH_DS5900:
+		tbus->ext_slot_base = 0x20000000;
+		tbus->ext_slot_size = 0x20000000;
+		/* fall through */
+	case MACH_DS5000_1XX:
+		tbus->num_tcslots = 3;
+		break;
+	case MACH_DS5000_XX:
+		tbus->num_tcslots = 2;
+	default:
+		break;
+	}
+	return 0;
+}
+
+/*
+ * Get the IRQ for the specified slot.
+ */
+void __init tc_device_get_irq(struct tc_dev *tdev)
+{
+	switch (tdev->slot) {
+	case 0:
+		tdev->interrupt = dec_interrupt[DEC_IRQ_TC0];
+		break;
+	case 1:
+		tdev->interrupt = dec_interrupt[DEC_IRQ_TC1];
+		break;
+	case 2:
+		tdev->interrupt = dec_interrupt[DEC_IRQ_TC2];
+		break;
+	/*
+	 * Yuck! DS5000/200 onboard devices
+	 */
+	case 5:
+		tdev->interrupt = dec_interrupt[DEC_IRQ_TC5];
+		break;
+	case 6:
+		tdev->interrupt = dec_interrupt[DEC_IRQ_TC6];
+		break;
+	default:
+		tdev->interrupt = -1;
+		break;
+	}
+}
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 4f2ffbd81dc1..38f41a593b12 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -2545,7 +2545,7 @@ config RIONET_RX_SIZE
 
 config FDDI
 	bool "FDDI driver support"
-	depends on (PCI || EISA)
+	depends on (PCI || EISA || TC)
 	help
 	  Fiber Distributed Data Interface is a high speed local area network
 	  design; essentially a replacement for high speed Ethernet. FDDI can
@@ -2555,11 +2555,31 @@ config FDDI
 	  will say N.
 
 config DEFXX
-	tristate "Digital DEFEA and DEFPA adapter support"
-	depends on FDDI && (PCI || EISA)
-	help
-	  This is support for the DIGITAL series of EISA (DEFEA) and PCI
-	  (DEFPA) controllers which can connect you to a local FDDI network.
+	tristate "Digital DEFTA/DEFEA/DEFPA adapter support"
+	depends on FDDI && (PCI || EISA || TC)
+	---help---
+	  This is support for the DIGITAL series of TURBOchannel (DEFTA),
+	  EISA (DEFEA) and PCI (DEFPA) controllers which can connect you
+	  to a local FDDI network.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called defxx.  If unsure, say N.
+
+config DEFXX_MMIO
+	bool
+	prompt "Use MMIO instead of PIO" if PCI || EISA
+	depends on DEFXX
+	default n if PCI || EISA
+	default y
+	---help---
+	  This instructs the driver to use EISA or PCI memory-mapped I/O
+	  (MMIO) as appropriate instead of programmed I/O ports (PIO).
+	  Enabling this gives an improvement in processing time in parts
+	  of the driver, but it may cause problems with EISA (DEFEA)
+	  adapters.  TURBOchannel does not have the concept of I/O ports,
+	  so MMIO is always used for these (DEFTA) adapters.
+
+	  If unsure, say N.
 
 config SKFP
 	tristate "SysKonnect FDDI PCI support"
diff --git a/drivers/net/defxx.c b/drivers/net/defxx.c
index dc3ab3b5c8cb..07d2731c1aa8 100644
--- a/drivers/net/defxx.c
+++ b/drivers/net/defxx.c
@@ -10,10 +10,12 @@
  *
  * Abstract:
  *   A Linux device driver supporting the Digital Equipment Corporation
- *   FDDI EISA and PCI controller families.  Supported adapters include:
+ *   FDDI TURBOchannel, EISA and PCI controller families.  Supported
+ *   adapters include:
  *
- *		DEC FDDIcontroller/EISA (DEFEA)
- *		DEC FDDIcontroller/PCI  (DEFPA)
+ *		DEC FDDIcontroller/TURBOchannel (DEFTA)
+ *		DEC FDDIcontroller/EISA         (DEFEA)
+ *		DEC FDDIcontroller/PCI          (DEFPA)
  *
  * The original author:
  *   LVS	Lawrence V. Stefani <lstefani@yahoo.com>
@@ -193,24 +195,27 @@
  *		14 Aug 2004	macro		Fix device names reported.
  *		14 Jun 2005	macro		Use irqreturn_t.
  *		23 Oct 2006	macro		Big-endian host support.
+ *		14 Dec 2006	macro		TURBOchannel support.
  */
 
 /* Include files */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/ioport.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/pci.h>
+#include <linux/bitops.h>
 #include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/eisa.h>
+#include <linux/errno.h>
+#include <linux/fddidevice.h>
 #include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
 #include <linux/netdevice.h>
-#include <linux/fddidevice.h>
+#include <linux/pci.h>
 #include <linux/skbuff.h>
-#include <linux/bitops.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/tc.h>
 
 #include <asm/byteorder.h>
 #include <asm/io.h>
@@ -219,8 +224,8 @@
 
 /* Version information string should be updated prior to each new release!  */
 #define DRV_NAME "defxx"
-#define DRV_VERSION "v1.09"
-#define DRV_RELDATE "2006/10/23"
+#define DRV_VERSION "v1.10"
+#define DRV_RELDATE "2006/12/14"
 
 static char version[] __devinitdata =
 	DRV_NAME ": " DRV_VERSION " " DRV_RELDATE
@@ -235,12 +240,41 @@ static char version[] __devinitdata =
  */
 #define NEW_SKB_SIZE (PI_RCV_DATA_K_SIZE_MAX+128)
 
+#define __unused __attribute__ ((unused))
+
+#ifdef CONFIG_PCI
+#define DFX_BUS_PCI(dev) (dev->bus == &pci_bus_type)
+#else
+#define DFX_BUS_PCI(dev) 0
+#endif
+
+#ifdef CONFIG_EISA
+#define DFX_BUS_EISA(dev) (dev->bus == &eisa_bus_type)
+#else
+#define DFX_BUS_EISA(dev) 0
+#endif
+
+#ifdef CONFIG_TC
+#define DFX_BUS_TC(dev) (dev->bus == &tc_bus_type)
+#else
+#define DFX_BUS_TC(dev) 0
+#endif
+
+#ifdef CONFIG_DEFXX_MMIO
+#define DFX_MMIO 1
+#else
+#define DFX_MMIO 0
+#endif
+
 /* Define module-wide (static) routines */
 
 static void		dfx_bus_init(struct net_device *dev);
+static void		dfx_bus_uninit(struct net_device *dev);
 static void		dfx_bus_config_check(DFX_board_t *bp);
 
-static int		dfx_driver_init(struct net_device *dev, const char *print_name);
+static int		dfx_driver_init(struct net_device *dev,
+					const char *print_name,
+					resource_size_t bar_start);
 static int		dfx_adap_init(DFX_board_t *bp, int get_buffers);
 
 static int		dfx_open(struct net_device *dev);
@@ -273,13 +307,13 @@ static void		dfx_xmt_flush(DFX_board_t *bp);
 
 /* Define module-wide (static) variables */
 
-static struct net_device *root_dfx_eisa_dev;
+static struct pci_driver dfx_pci_driver;
+static struct eisa_driver dfx_eisa_driver;
+static struct tc_driver dfx_tc_driver;
 
 
 /*
  * =======================
- * = dfx_port_write_byte =
- * = dfx_port_read_byte	 =
  * = dfx_port_write_long =
  * = dfx_port_read_long  =
  * =======================
@@ -291,12 +325,11 @@ static struct net_device *root_dfx_eisa_dev;
  *   None
  *
  * Arguments:
- *   bp     - pointer to board information
- *   offset - register offset from base I/O address
- *   data   - for dfx_port_write_byte and dfx_port_write_long, this
- *			  is a value to write.
- *			  for dfx_port_read_byte and dfx_port_read_byte, this
- *			  is a pointer to store the read value.
+ *   bp		- pointer to board information
+ *   offset	- register offset from base I/O address
+ *   data	- for dfx_port_write_long, this is a value to write;
+ *		  for dfx_port_read_long, this is a pointer to store
+ *		  the read value
  *
  * Functional Description:
  *   These routines perform the correct operation to read or write
@@ -310,7 +343,7 @@ static struct net_device *root_dfx_eisa_dev;
  *   registers using the register offsets defined in DEFXX.H.
  *
  *   PCI port block base addresses are assigned by the PCI BIOS or system
- *	 firmware.  There is one 128 byte port block which can be accessed.  It
+ *   firmware.  There is one 128 byte port block which can be accessed.  It
  *   allows for I/O mapping of both PDQ and PFI registers using the register
  *   offsets defined in DEFXX.H.
  *
@@ -318,7 +351,7 @@ static struct net_device *root_dfx_eisa_dev;
  *   None
  *
  * Assumptions:
- *   bp->base_addr is a valid base I/O address for this adapter.
+ *   bp->base is a valid base I/O address for this adapter.
  *   offset is a valid register offset for this adapter.
  *
  * Side Effects:
@@ -329,69 +362,135 @@ static struct net_device *root_dfx_eisa_dev;
  *   advantage of strict data type checking.
  */
 
-static inline void dfx_port_write_byte(
-	DFX_board_t	*bp,
-	int			offset,
-	u8			data
-	)
+static inline void dfx_writel(DFX_board_t *bp, int offset, u32 data)
+{
+	writel(data, bp->base.mem + offset);
+	mb();
+}
 
-	{
-	u16 port = bp->base_addr + offset;
+static inline void dfx_outl(DFX_board_t *bp, int offset, u32 data)
+{
+	outl(data, bp->base.port + offset);
+}
 
-	outb(data, port);
-	}
+static void dfx_port_write_long(DFX_board_t *bp, int offset, u32 data)
+{
+	struct device __unused *bdev = bp->bus_dev;
+	int dfx_bus_tc = DFX_BUS_TC(bdev);
+	int dfx_use_mmio = DFX_MMIO || dfx_bus_tc;
 
-static inline void dfx_port_read_byte(
-	DFX_board_t	*bp,
-	int			offset,
-	u8			*data
-	)
+	if (dfx_use_mmio)
+		dfx_writel(bp, offset, data);
+	else
+		dfx_outl(bp, offset, data);
+}
 
-	{
-	u16 port = bp->base_addr + offset;
 
-	*data = inb(port);
-	}
+static inline void dfx_readl(DFX_board_t *bp, int offset, u32 *data)
+{
+	mb();
+	*data = readl(bp->base.mem + offset);
+}
 
-static inline void dfx_port_write_long(
-	DFX_board_t	*bp,
-	int			offset,
-	u32			data
-	)
+static inline void dfx_inl(DFX_board_t *bp, int offset, u32 *data)
+{
+	*data = inl(bp->base.port + offset);
+}
 
-	{
-	u16 port = bp->base_addr + offset;
+static void dfx_port_read_long(DFX_board_t *bp, int offset, u32 *data)
+{
+	struct device __unused *bdev = bp->bus_dev;
+	int dfx_bus_tc = DFX_BUS_TC(bdev);
+	int dfx_use_mmio = DFX_MMIO || dfx_bus_tc;
 
-	outl(data, port);
-	}
+	if (dfx_use_mmio)
+		dfx_readl(bp, offset, data);
+	else
+		dfx_inl(bp, offset, data);
+}
 
-static inline void dfx_port_read_long(
-	DFX_board_t	*bp,
-	int			offset,
-	u32			*data
-	)
 
-	{
-	u16 port = bp->base_addr + offset;
+/*
+ * ================
+ * = dfx_get_bars =
+ * ================
+ *
+ * Overview:
+ *   Retrieves the address range used to access control and status
+ *   registers.
+ *
+ * Returns:
+ *   None
+ *
+ * Arguments:
+ *   bdev	- pointer to device information
+ *   bar_start	- pointer to store the start address
+ *   bar_len	- pointer to store the length of the area
+ *
+ * Assumptions:
+ *   I am sure there are some.
+ *
+ * Side Effects:
+ *   None
+ */
+static void dfx_get_bars(struct device *bdev,
+			 resource_size_t *bar_start, resource_size_t *bar_len)
+{
+	int dfx_bus_pci = DFX_BUS_PCI(bdev);
+	int dfx_bus_eisa = DFX_BUS_EISA(bdev);
+	int dfx_bus_tc = DFX_BUS_TC(bdev);
+	int dfx_use_mmio = DFX_MMIO || dfx_bus_tc;
 
-	*data = inl(port);
-	}
+	if (dfx_bus_pci) {
+		int num = dfx_use_mmio ? 0 : 1;
 
+		*bar_start = pci_resource_start(to_pci_dev(bdev), num);
+		*bar_len = pci_resource_len(to_pci_dev(bdev), num);
+	}
+	if (dfx_bus_eisa) {
+		unsigned long base_addr = to_eisa_device(bdev)->base_addr;
+		resource_size_t bar;
+
+		if (dfx_use_mmio) {
+			bar = inb(base_addr + PI_ESIC_K_MEM_ADD_CMP_2);
+			bar <<= 8;
+			bar |= inb(base_addr + PI_ESIC_K_MEM_ADD_CMP_1);
+			bar <<= 8;
+			bar |= inb(base_addr + PI_ESIC_K_MEM_ADD_CMP_0);
+			bar <<= 16;
+			*bar_start = bar;
+			bar = inb(base_addr + PI_ESIC_K_MEM_ADD_MASK_2);
+			bar <<= 8;
+			bar |= inb(base_addr + PI_ESIC_K_MEM_ADD_MASK_1);
+			bar <<= 8;
+			bar |= inb(base_addr + PI_ESIC_K_MEM_ADD_MASK_0);
+			bar <<= 16;
+			*bar_len = (bar | PI_MEM_ADD_MASK_M) + 1;
+		} else {
+			*bar_start = base_addr;
+			*bar_len = PI_ESIC_K_CSR_IO_LEN;
+		}
+	}
+	if (dfx_bus_tc) {
+		*bar_start = to_tc_dev(bdev)->resource.start +
+			     PI_TC_K_CSR_OFFSET;
+		*bar_len = PI_TC_K_CSR_LEN;
+	}
+}
 
 /*
- * =============
- * = dfx_init_one_pci_or_eisa =
- * =============
+ * ================
+ * = dfx_register =
+ * ================
  *
  * Overview:
- *   Initializes a supported FDDI EISA or PCI controller
+ *   Initializes a supported FDDI controller
  *
  * Returns:
  *   Condition code
  *
  * Arguments:
- *   pdev - pointer to pci device information (NULL for EISA)
- *   ioaddr - pointer to port (NULL for PCI)
+ *   bdev - pointer to device information
  *
  * Functional Description:
  *
@@ -407,56 +506,74 @@ static inline void dfx_port_read_long(
  *   initialized and the board resources are read and stored in
  *   the device structure.
  */
-static int __devinit dfx_init_one_pci_or_eisa(struct pci_dev *pdev, long ioaddr)
+static int __devinit dfx_register(struct device *bdev)
 {
 	static int version_disp;
-	char *print_name = DRV_NAME;
+	int dfx_bus_pci = DFX_BUS_PCI(bdev);
+	int dfx_bus_tc = DFX_BUS_TC(bdev);
+	int dfx_use_mmio = DFX_MMIO || dfx_bus_tc;
+	char *print_name = bdev->bus_id;
 	struct net_device *dev;
 	DFX_board_t	  *bp;			/* board pointer */
+	resource_size_t bar_start = 0;		/* pointer to port */
+	resource_size_t bar_len = 0;		/* resource length */
 	int alloc_size;				/* total buffer size used */
-	int err;
+	struct resource *region;
+	int err = 0;
 
 	if (!version_disp) {	/* display version info if adapter is found */
 		version_disp = 1;	/* set display flag to TRUE so that */
 		printk(version);	/* we only display this string ONCE */
 	}
 
-	if (pdev != NULL)
-		print_name = pci_name(pdev);
-
 	dev = alloc_fddidev(sizeof(*bp));
 	if (!dev) {
-		printk(KERN_ERR "%s: unable to allocate fddidev, aborting\n",
+		printk(KERN_ERR "%s: Unable to allocate fddidev, aborting\n",
 		       print_name);
 		return -ENOMEM;
 	}
 
 	/* Enable PCI device. */
-	if (pdev != NULL) {
-		err = pci_enable_device (pdev);
-		if (err) goto err_out;
-		ioaddr = pci_resource_start (pdev, 1);
+	if (dfx_bus_pci && pci_enable_device(to_pci_dev(bdev))) {
+		printk(KERN_ERR "%s: Cannot enable PCI device, aborting\n",
+		       print_name);
+		goto err_out;
 	}
 
 	SET_MODULE_OWNER(dev);
-	if (pdev != NULL)
-		SET_NETDEV_DEV(dev, &pdev->dev);
+	SET_NETDEV_DEV(dev, bdev);
+
+	bp = netdev_priv(dev);
+	bp->bus_dev = bdev;
+	dev_set_drvdata(bdev, dev);
 
-	bp = dev->priv;
+	dfx_get_bars(bdev, &bar_start, &bar_len);
 
-	if (!request_region(ioaddr,
-			    pdev ? PFI_K_CSR_IO_LEN : PI_ESIC_K_CSR_IO_LEN,
-			    print_name)) {
+	if (dfx_use_mmio)
+		region = request_mem_region(bar_start, bar_len, print_name);
+	else
+		region = request_region(bar_start, bar_len, print_name);
+	if (!region) {
 		printk(KERN_ERR "%s: Cannot reserve I/O resource "
-		       "0x%x @ 0x%lx, aborting\n", print_name,
-		       pdev ? PFI_K_CSR_IO_LEN : PI_ESIC_K_CSR_IO_LEN, ioaddr);
+		       "0x%lx @ 0x%lx, aborting\n",
+		       print_name, (long)bar_len, (long)bar_start);
 		err = -EBUSY;
-		goto err_out;
+		goto err_out_disable;
 	}
 
-	/* Initialize new device structure */
+	/* Set up I/O base address. */
+	if (dfx_use_mmio) {
+		bp->base.mem = ioremap_nocache(bar_start, bar_len);
+		if (!bp->base.mem) {
+			printk(KERN_ERR "%s: Cannot map MMIO\n", print_name);
+			goto err_out_region;
+		}
+	} else {
+		bp->base.port = bar_start;
+		dev->base_addr = bar_start;
+	}
 
-	dev->base_addr			= ioaddr; /* save port (I/O) base address */
+	/* Initialize new device structure */
 
 	dev->get_stats			= dfx_ctl_get_stats;
 	dev->open			= dfx_open;
@@ -465,22 +582,12 @@ static int __devinit dfx_init_one_pci_or_eisa(struct pci_dev *pdev, long ioaddr)
 	dev->set_multicast_list		= dfx_ctl_set_multicast_list;
 	dev->set_mac_address		= dfx_ctl_set_mac_address;
 
-	if (pdev == NULL) {
-		/* EISA board */
-		bp->bus_type = DFX_BUS_TYPE_EISA;
-		bp->next = root_dfx_eisa_dev;
-		root_dfx_eisa_dev = dev;
-	} else {
-		/* PCI board */
-		bp->bus_type = DFX_BUS_TYPE_PCI;
-		bp->pci_dev = pdev;
-		pci_set_drvdata (pdev, dev);
-		pci_set_master (pdev);
-	}
+	if (dfx_bus_pci)
+		pci_set_master(to_pci_dev(bdev));
 
-	if (dfx_driver_init(dev, print_name) != DFX_K_SUCCESS) {
+	if (dfx_driver_init(dev, print_name, bar_start) != DFX_K_SUCCESS) {
 		err = -ENODEV;
-		goto err_out_region;
+		goto err_out_unmap;
 	}
 
 	err = register_netdev(dev);
@@ -499,44 +606,28 @@ err_out_kfree:
 		     sizeof(PI_CONSUMER_BLOCK) +
 		     (PI_ALIGN_K_DESC_BLK - 1);
 	if (bp->kmalloced)
-		pci_free_consistent(pdev, alloc_size,
-				    bp->kmalloced, bp->kmalloced_dma);
+		dma_free_coherent(bdev, alloc_size,
+				  bp->kmalloced, bp->kmalloced_dma);
+
+err_out_unmap:
+	if (dfx_use_mmio)
+		iounmap(bp->base.mem);
+
 err_out_region:
-	release_region(ioaddr, pdev ? PFI_K_CSR_IO_LEN : PI_ESIC_K_CSR_IO_LEN);
+	if (dfx_use_mmio)
+		release_mem_region(bar_start, bar_len);
+	else
+		release_region(bar_start, bar_len);
+
+err_out_disable:
+	if (dfx_bus_pci)
+		pci_disable_device(to_pci_dev(bdev));
+
 err_out:
 	free_netdev(dev);
 	return err;
 }
 
-static int __devinit dfx_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
-{
-	return dfx_init_one_pci_or_eisa(pdev, 0);
-}
-
-static int __init dfx_eisa_init(void)
-{
-	int rc = -ENODEV;
-	int i;			/* used in for loops */
-	u16 port;		/* temporary I/O (port) address */
-	u32 slot_id;		/* EISA hardware (slot) ID read from adapter */
-
-	DBG_printk("In dfx_eisa_init...\n");
-
-	/* Scan for FDDI EISA controllers */
-
-	for (i=0; i < DFX_MAX_EISA_SLOTS; i++)		/* only scan for up to 16 EISA slots */
-	{
-		port = (i << 12) + PI_ESIC_K_SLOT_ID;	/* port = I/O address for reading slot ID */
-		slot_id = inl(port);					/* read EISA HW (slot) ID */
-		if ((slot_id & 0xF0FFFFFF) == DEFEA_PRODUCT_ID)
-		{
-			port = (i << 12);					/* recalc base addr */
-
-			if (dfx_init_one_pci_or_eisa(NULL, port) == 0) rc = 0;
-		}
-	}
-	return rc;
-}
 
 /*
  * ================
@@ -544,7 +635,7 @@ static int __init dfx_eisa_init(void)
  * ================
  *
  * Overview:
- *   Initializes EISA and PCI controller bus-specific logic.
+ *   Initializes the bus-specific controller logic.
  *
  * Returns:
  *   None
@@ -560,7 +651,7 @@ static int __init dfx_eisa_init(void)
  *   None
  *
  * Assumptions:
- *   dev->base_addr has already been set with the proper
+ *   bp->base has already been set with the proper
  *	 base I/O address for this device.
  *
  * Side Effects:
@@ -571,87 +662,103 @@ static int __init dfx_eisa_init(void)
 
 static void __devinit dfx_bus_init(struct net_device *dev)
 {
-	DFX_board_t *bp = dev->priv;
-	u8			val;	/* used for I/O read/writes */
+	DFX_board_t *bp = netdev_priv(dev);
+	struct device *bdev = bp->bus_dev;
+	int dfx_bus_pci = DFX_BUS_PCI(bdev);
+	int dfx_bus_eisa = DFX_BUS_EISA(bdev);
+	int dfx_bus_tc = DFX_BUS_TC(bdev);
+	int dfx_use_mmio = DFX_MMIO || dfx_bus_tc;
+	u8 val;
 
 	DBG_printk("In dfx_bus_init...\n");
 
-	/*
-	 * Initialize base I/O address field in bp structure
-	 *
-	 * Note: bp->base_addr is the same as dev->base_addr.
-	 *		 It's useful because often we'll need to read
-	 *		 or write registers where we already have the
-	 *		 bp pointer instead of the dev pointer.  Having
-	 *		 the base address in the bp structure will
-	 *		 save a pointer dereference.
-	 *
-	 *		 IMPORTANT!! This field must be defined before
-	 *		 any of the dfx_port_* inline functions are
-	 *		 called.
-	 */
-
-	bp->base_addr = dev->base_addr;
-
-	/* And a pointer back to the net_device struct */
+	/* Initialize a pointer back to the net_device struct */
 	bp->dev = dev;
 
 	/* Initialize adapter based on bus type */
 
-	if (bp->bus_type == DFX_BUS_TYPE_EISA)
-		{
-		/* Get the interrupt level from the ESIC chip */
-
-		dfx_port_read_byte(bp, PI_ESIC_K_IO_CONFIG_STAT_0, &val);
-		switch ((val & PI_CONFIG_STAT_0_M_IRQ) >> PI_CONFIG_STAT_0_V_IRQ)
-			{
-			case PI_CONFIG_STAT_0_IRQ_K_9:
-				dev->irq = 9;
-				break;
-
-			case PI_CONFIG_STAT_0_IRQ_K_10:
-				dev->irq = 10;
-				break;
+	if (dfx_bus_tc)
+		dev->irq = to_tc_dev(bdev)->interrupt;
+	if (dfx_bus_eisa) {
+		unsigned long base_addr = to_eisa_device(bdev)->base_addr;
 
-			case PI_CONFIG_STAT_0_IRQ_K_11:
-				dev->irq = 11;
-				break;
+		/* Get the interrupt level from the ESIC chip.  */
+		val = inb(base_addr + PI_ESIC_K_IO_CONFIG_STAT_0);
+		val &= PI_CONFIG_STAT_0_M_IRQ;
+		val >>= PI_CONFIG_STAT_0_V_IRQ;
 
-			case PI_CONFIG_STAT_0_IRQ_K_15:
-				dev->irq = 15;
-				break;
-			}
-
-		/* Enable access to I/O on the board by writing 0x03 to Function Control Register */
+		switch (val) {
+		case PI_CONFIG_STAT_0_IRQ_K_9:
+			dev->irq = 9;
+			break;
 
-		dfx_port_write_byte(bp, PI_ESIC_K_FUNCTION_CNTRL, PI_ESIC_K_FUNCTION_CNTRL_IO_ENB);
+		case PI_CONFIG_STAT_0_IRQ_K_10:
+			dev->irq = 10;
+			break;
 
-		/* Set the I/O decode range of the board */
+		case PI_CONFIG_STAT_0_IRQ_K_11:
+			dev->irq = 11;
+			break;
 
-		val = ((dev->base_addr >> 12) << PI_IO_CMP_V_SLOT);
-		dfx_port_write_byte(bp, PI_ESIC_K_IO_CMP_0_1, val);
-		dfx_port_write_byte(bp, PI_ESIC_K_IO_CMP_1_1, val);
+		case PI_CONFIG_STAT_0_IRQ_K_15:
+			dev->irq = 15;
+			break;
+		}
 
-		/* Enable access to rest of module (including PDQ and packet memory) */
+		/*
+		 * Enable memory decoding (MEMCS0) and/or port decoding
+		 * (IOCS1/IOCS0) as appropriate in Function Control
+		 * Register.  One of the port chip selects seems to be
+		 * used for the Burst Holdoff register, but this bit of
+		 * documentation is missing and as yet it has not been
+		 * determined which of the two.  This is also the reason
+		 * the size of the decoded port range is twice as large
+		 * as one required by the PDQ.
+		 */
 
-		dfx_port_write_byte(bp, PI_ESIC_K_SLOT_CNTRL, PI_SLOT_CNTRL_M_ENB);
+		/* Set the decode range of the board.  */
+		val = ((bp->base.port >> 12) << PI_IO_CMP_V_SLOT);
+		outb(base_addr + PI_ESIC_K_IO_ADD_CMP_0_1, val);
+		outb(base_addr + PI_ESIC_K_IO_ADD_CMP_0_0, 0);
+		outb(base_addr + PI_ESIC_K_IO_ADD_CMP_1_1, val);
+		outb(base_addr + PI_ESIC_K_IO_ADD_CMP_1_0, 0);
+		val = PI_ESIC_K_CSR_IO_LEN - 1;
+		outb(base_addr + PI_ESIC_K_IO_ADD_MASK_0_1, (val >> 8) & 0xff);
+		outb(base_addr + PI_ESIC_K_IO_ADD_MASK_0_0, val & 0xff);
+		outb(base_addr + PI_ESIC_K_IO_ADD_MASK_1_1, (val >> 8) & 0xff);
+		outb(base_addr + PI_ESIC_K_IO_ADD_MASK_1_0, val & 0xff);
+
+		/* Enable the decoders.  */
+		val = PI_FUNCTION_CNTRL_M_IOCS1 | PI_FUNCTION_CNTRL_M_IOCS0;
+		if (dfx_use_mmio)
+			val |= PI_FUNCTION_CNTRL_M_MEMCS0;
+		outb(base_addr + PI_ESIC_K_FUNCTION_CNTRL, val);
 
 		/*
-		 * Map PDQ registers into I/O space.  This is done by clearing a bit
-		 * in Burst Holdoff register.
+		 * Enable access to the rest of the module
+		 * (including PDQ and packet memory).
 		 */
+		val = PI_SLOT_CNTRL_M_ENB;
+		outb(base_addr + PI_ESIC_K_SLOT_CNTRL, val);
 
-		dfx_port_read_byte(bp, PI_ESIC_K_BURST_HOLDOFF, &val);
-		dfx_port_write_byte(bp, PI_ESIC_K_BURST_HOLDOFF, (val & ~PI_BURST_HOLDOFF_M_MEM_MAP));
+		/*
+		 * Map PDQ registers into memory or port space.  This is
+		 * done with a bit in the Burst Holdoff register.
+		 */
+		val = inb(base_addr + PI_DEFEA_K_BURST_HOLDOFF);
+		if (dfx_use_mmio)
+			val |= PI_BURST_HOLDOFF_V_MEM_MAP;
+		else
+			val &= ~PI_BURST_HOLDOFF_V_MEM_MAP;
+		outb(base_addr + PI_DEFEA_K_BURST_HOLDOFF, val);
 
 		/* Enable interrupts at EISA bus interface chip (ESIC) */
-
-		dfx_port_read_byte(bp, PI_ESIC_K_IO_CONFIG_STAT_0, &val);
-		dfx_port_write_byte(bp, PI_ESIC_K_IO_CONFIG_STAT_0, (val | PI_CONFIG_STAT_0_M_INT_ENB));
-		}
-	else
-		{
-		struct pci_dev *pdev = bp->pci_dev;
+		val = inb(base_addr + PI_ESIC_K_IO_CONFIG_STAT_0);
+		val |= PI_CONFIG_STAT_0_M_INT_ENB;
+		outb(base_addr + PI_ESIC_K_IO_CONFIG_STAT_0, val);
+	}
+	if (dfx_bus_pci) {
+		struct pci_dev *pdev = to_pci_dev(bdev);
 
 		/* Get the interrupt level from the PCI Configuration Table */
 
@@ -660,17 +767,70 @@ static void __devinit dfx_bus_init(struct net_device *dev)
 		/* Check Latency Timer and set if less than minimal */
 
 		pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &val);
-		if (val < PFI_K_LAT_TIMER_MIN)	/* if less than min, override with default */
-			{
+		if (val < PFI_K_LAT_TIMER_MIN) {
 			val = PFI_K_LAT_TIMER_DEF;
 			pci_write_config_byte(pdev, PCI_LATENCY_TIMER, val);
-			}
+		}
 
 		/* Enable interrupts at PCI bus interface chip (PFI) */
+		val = PFI_MODE_M_PDQ_INT_ENB | PFI_MODE_M_DMA_ENB;
+		dfx_port_write_long(bp, PFI_K_REG_MODE_CTRL, val);
+	}
+}
 
-		dfx_port_write_long(bp, PFI_K_REG_MODE_CTRL, (PFI_MODE_M_PDQ_INT_ENB | PFI_MODE_M_DMA_ENB));
-		}
+/*
+ * ==================
+ * = dfx_bus_uninit =
+ * ==================
+ *
+ * Overview:
+ *   Uninitializes the bus-specific controller logic.
+ *
+ * Returns:
+ *   None
+ *
+ * Arguments:
+ *   dev - pointer to device information
+ *
+ * Functional Description:
+ *   Perform bus-specific logic uninitialization.
+ *
+ * Return Codes:
+ *   None
+ *
+ * Assumptions:
+ *   bp->base has already been set with the proper
+ *	 base I/O address for this device.
+ *
+ * Side Effects:
+ *   Interrupts are disabled at the adapter bus-specific logic.
+ */
+
+static void __devinit dfx_bus_uninit(struct net_device *dev)
+{
+	DFX_board_t *bp = netdev_priv(dev);
+	struct device *bdev = bp->bus_dev;
+	int dfx_bus_pci = DFX_BUS_PCI(bdev);
+	int dfx_bus_eisa = DFX_BUS_EISA(bdev);
+	u8 val;
+
+	DBG_printk("In dfx_bus_uninit...\n");
+
+	/* Uninitialize adapter based on bus type */
+
+	if (dfx_bus_eisa) {
+		unsigned long base_addr = to_eisa_device(bdev)->base_addr;
+
+		/* Disable interrupts at EISA bus interface chip (ESIC) */
+		val = inb(base_addr + PI_ESIC_K_IO_CONFIG_STAT_0);
+		val &= ~PI_CONFIG_STAT_0_M_INT_ENB;
+		outb(base_addr + PI_ESIC_K_IO_CONFIG_STAT_0, val);
+	}
+	if (dfx_bus_pci) {
+		/* Disable interrupts at PCI bus interface chip (PFI) */
+		dfx_port_write_long(bp, PFI_K_REG_MODE_CTRL, 0);
 	}
+}
 
 
 /*
@@ -705,18 +865,16 @@ static void __devinit dfx_bus_init(struct net_device *dev)
 
 static void __devinit dfx_bus_config_check(DFX_board_t *bp)
 {
+	struct device __unused *bdev = bp->bus_dev;
+	int dfx_bus_eisa = DFX_BUS_EISA(bdev);
 	int	status;				/* return code from adapter port control call */
-	u32	slot_id;			/* EISA-bus hardware id (DEC3001, DEC3002,...) */
 	u32	host_data;			/* LW data returned from port control call */
 
 	DBG_printk("In dfx_bus_config_check...\n");
 
 	/* Configuration check only valid for EISA adapter */
 
-	if (bp->bus_type == DFX_BUS_TYPE_EISA)
-		{
-		dfx_port_read_long(bp, PI_ESIC_K_SLOT_ID, &slot_id);
-
+	if (dfx_bus_eisa) {
 		/*
 		 * First check if revision 2 EISA controller.  Rev. 1 cards used
 		 * PDQ revision B, so no workaround needed in this case.  Rev. 3
@@ -724,14 +882,11 @@ static void __devinit dfx_bus_config_check(DFX_board_t *bp)
 		 * case, either.  Only Rev. 2 cards used either Rev. D or E
 		 * chips, so we must verify the chip revision on Rev. 2 cards.
 		 */
-
-		if (slot_id == DEFEA_PROD_ID_2)
-			{
+		if (to_eisa_device(bdev)->id.driver_data == DEFEA_PROD_ID_2) {
 			/*
-			 * Revision 2 FDDI EISA controller found, so let's check PDQ
-			 * revision of adapter.
+			 * Revision 2 FDDI EISA controller found,
+			 * so let's check PDQ revision of adapter.
 			 */
-
 			status = dfx_hw_port_ctrl_req(bp,
 											PI_PCTRL_M_SUB_CMD,
 											PI_SUB_CMD_K_PDQ_REV_GET,
@@ -805,13 +960,20 @@ static void __devinit dfx_bus_config_check(DFX_board_t *bp)
  */
 
 static int __devinit dfx_driver_init(struct net_device *dev,
-				     const char *print_name)
+				     const char *print_name,
+				     resource_size_t bar_start)
 {
-	DFX_board_t *bp = dev->priv;
-	int			alloc_size;			/* total buffer size needed */
-	char		*top_v, *curr_v;	/* virtual addrs into memory block */
-	dma_addr_t		top_p, curr_p;		/* physical addrs into memory block */
-	u32			data;				/* host data register value */
+	DFX_board_t *bp = netdev_priv(dev);
+	struct device *bdev = bp->bus_dev;
+	int dfx_bus_pci = DFX_BUS_PCI(bdev);
+	int dfx_bus_eisa = DFX_BUS_EISA(bdev);
+	int dfx_bus_tc = DFX_BUS_TC(bdev);
+	int dfx_use_mmio = DFX_MMIO || dfx_bus_tc;
+	int alloc_size;			/* total buffer size needed */
+	char *top_v, *curr_v;		/* virtual addrs into memory block */
+	dma_addr_t top_p, curr_p;	/* physical addrs into memory block */
+	u32 data, le32;			/* host data register value */
+	char *board_name = NULL;
 
 	DBG_printk("In dfx_driver_init...\n");
 
@@ -860,8 +1022,8 @@ static int __devinit dfx_driver_init(struct net_device *dev,
 		       print_name);
 		return(DFX_K_FAILURE);
 	}
-	data = cpu_to_le32(data);
-	memcpy(&bp->factory_mac_addr[0], &data, sizeof(u32));
+	le32 = cpu_to_le32(data);
+	memcpy(&bp->factory_mac_addr[0], &le32, sizeof(u32));
 
 	if (dfx_hw_port_ctrl_req(bp, PI_PCTRL_M_MLA, PI_PDATA_A_MLA_K_HI, 0,
 				 &data) != DFX_K_SUCCESS) {
@@ -869,8 +1031,8 @@ static int __devinit dfx_driver_init(struct net_device *dev,
 		       print_name);
 		return(DFX_K_FAILURE);
 	}
-	data = cpu_to_le32(data);
-	memcpy(&bp->factory_mac_addr[4], &data, sizeof(u16));
+	le32 = cpu_to_le32(data);
+	memcpy(&bp->factory_mac_addr[4], &le32, sizeof(u16));
 
 	/*
 	 * Set current address to factory address
@@ -880,20 +1042,18 @@ static int __devinit dfx_driver_init(struct net_device *dev,
 	 */
 
 	memcpy(dev->dev_addr, bp->factory_mac_addr, FDDI_K_ALEN);
-	if (bp->bus_type == DFX_BUS_TYPE_EISA)
-		printk("%s: DEFEA at I/O addr = 0x%lX, IRQ = %d, "
-		       "Hardware addr = %02X-%02X-%02X-%02X-%02X-%02X\n",
-		       print_name, dev->base_addr, dev->irq,
-		       dev->dev_addr[0], dev->dev_addr[1],
-		       dev->dev_addr[2], dev->dev_addr[3],
-		       dev->dev_addr[4], dev->dev_addr[5]);
-	else
-		printk("%s: DEFPA at I/O addr = 0x%lX, IRQ = %d, "
-		       "Hardware addr = %02X-%02X-%02X-%02X-%02X-%02X\n",
-		       print_name, dev->base_addr, dev->irq,
-		       dev->dev_addr[0], dev->dev_addr[1],
-		       dev->dev_addr[2], dev->dev_addr[3],
-		       dev->dev_addr[4], dev->dev_addr[5]);
+	if (dfx_bus_tc)
+		board_name = "DEFTA";
+	if (dfx_bus_eisa)
+		board_name = "DEFEA";
+	if (dfx_bus_pci)
+		board_name = "DEFPA";
+	pr_info("%s: %s at %saddr = 0x%llx, IRQ = %d, "
+		"Hardware addr = %02X-%02X-%02X-%02X-%02X-%02X\n",
+		print_name, board_name, dfx_use_mmio ? "" : "I/O ",
+		(long long)bar_start, dev->irq,
+		dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
+		dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
 
 	/*
 	 * Get memory for descriptor block, consumer block, and other buffers
@@ -908,8 +1068,9 @@ static int __devinit dfx_driver_init(struct net_device *dev,
 #endif
 					sizeof(PI_CONSUMER_BLOCK) +
 					(PI_ALIGN_K_DESC_BLK - 1);
-	bp->kmalloced = top_v = pci_alloc_consistent(bp->pci_dev, alloc_size,
-						     &bp->kmalloced_dma);
+	bp->kmalloced = top_v = dma_alloc_coherent(bp->bus_dev, alloc_size,
+						   &bp->kmalloced_dma,
+						   GFP_ATOMIC);
 	if (top_v == NULL) {
 		printk("%s: Could not allocate memory for host buffers "
 		       "and structures!\n", print_name);
@@ -1219,14 +1380,15 @@ static int dfx_adap_init(DFX_board_t *bp, int get_buffers)
 
 static int dfx_open(struct net_device *dev)
 {
+	DFX_board_t *bp = netdev_priv(dev);
 	int ret;
-	DFX_board_t	*bp = dev->priv;
 
 	DBG_printk("In dfx_open...\n");
 
 	/* Register IRQ - support shared interrupts by passing device ptr */
 
-	ret = request_irq(dev->irq, dfx_interrupt, IRQF_SHARED, dev->name, dev);
+	ret = request_irq(dev->irq, dfx_interrupt, IRQF_SHARED, dev->name,
+			  dev);
 	if (ret) {
 		printk(KERN_ERR "%s: Requested IRQ %d is busy\n", dev->name, dev->irq);
 		return ret;
@@ -1309,7 +1471,7 @@ static int dfx_open(struct net_device *dev)
 
 static int dfx_close(struct net_device *dev)
 {
-	DFX_board_t	*bp = dev->priv;
+	DFX_board_t *bp = netdev_priv(dev);
 
 	DBG_printk("In dfx_close...\n");
 
@@ -1645,7 +1807,7 @@ static void dfx_int_type_0_process(DFX_board_t	*bp)
 
 static void dfx_int_common(struct net_device *dev)
 {
-	DFX_board_t 	*bp = dev->priv;
+	DFX_board_t *bp = netdev_priv(dev);
 	PI_UINT32	port_status;		/* Port Status register */
 
 	/* Process xmt interrupts - frequent case, so always call this routine */
@@ -1715,18 +1877,16 @@ static void dfx_int_common(struct net_device *dev)
 
 static irqreturn_t dfx_interrupt(int irq, void *dev_id)
 {
-	struct net_device	*dev = dev_id;
-	DFX_board_t		*bp;	/* private board structure pointer */
-
-	/* Get board pointer only if device structure is valid */
-
-	bp = dev->priv;
-
-	/* See if we're already servicing an interrupt */
+	struct net_device *dev = dev_id;
+	DFX_board_t *bp = netdev_priv(dev);
+	struct device *bdev = bp->bus_dev;
+	int dfx_bus_pci = DFX_BUS_PCI(bdev);
+	int dfx_bus_eisa = DFX_BUS_EISA(bdev);
+	int dfx_bus_tc = DFX_BUS_TC(bdev);
 
 	/* Service adapter interrupts */
 
-	if (bp->bus_type == DFX_BUS_TYPE_PCI) {
+	if (dfx_bus_pci) {
 		u32 status;
 
 		dfx_port_read_long(bp, PFI_K_REG_STATUS, &status);
@@ -1750,10 +1910,12 @@ static irqreturn_t dfx_interrupt(int irq, void *dev_id)
 				     PFI_MODE_M_DMA_ENB));
 
 		spin_unlock(&bp->lock);
-	} else {
+	}
+	if (dfx_bus_eisa) {
+		unsigned long base_addr = to_eisa_device(bdev)->base_addr;
 		u8 status;
 
-		dfx_port_read_byte(bp, PI_ESIC_K_IO_CONFIG_STAT_0, &status);
+		status = inb(base_addr + PI_ESIC_K_IO_CONFIG_STAT_0);
 		if (!(status & PI_CONFIG_STAT_0_M_PEND))
 			return IRQ_NONE;
 
@@ -1761,15 +1923,35 @@ static irqreturn_t dfx_interrupt(int irq, void *dev_id)
 
 		/* Disable interrupts at the ESIC */
 		status &= ~PI_CONFIG_STAT_0_M_INT_ENB;
-		dfx_port_write_byte(bp, PI_ESIC_K_IO_CONFIG_STAT_0, status);
+		outb(base_addr + PI_ESIC_K_IO_CONFIG_STAT_0, status);
 
 		/* Call interrupt service routine for this adapter */
 		dfx_int_common(dev);
 
 		/* Reenable interrupts at the ESIC */
-		dfx_port_read_byte(bp, PI_ESIC_K_IO_CONFIG_STAT_0, &status);
+		status = inb(base_addr + PI_ESIC_K_IO_CONFIG_STAT_0);
 		status |= PI_CONFIG_STAT_0_M_INT_ENB;
-		dfx_port_write_byte(bp, PI_ESIC_K_IO_CONFIG_STAT_0, status);
+		outb(base_addr + PI_ESIC_K_IO_CONFIG_STAT_0, status);
+
+		spin_unlock(&bp->lock);
+	}
+	if (dfx_bus_tc) {
+		u32 status;
+
+		dfx_port_read_long(bp, PI_PDQ_K_REG_PORT_STATUS, &status);
+		if (!(status & (PI_PSTATUS_M_RCV_DATA_PENDING |
+				PI_PSTATUS_M_XMT_DATA_PENDING |
+				PI_PSTATUS_M_SMT_HOST_PENDING |
+				PI_PSTATUS_M_UNSOL_PENDING |
+				PI_PSTATUS_M_CMD_RSP_PENDING |
+				PI_PSTATUS_M_CMD_REQ_PENDING |
+				PI_PSTATUS_M_TYPE_0_PENDING)))
+			return IRQ_NONE;
+
+		spin_lock(&bp->lock);
+
+		/* Call interrupt service routine for this adapter */
+		dfx_int_common(dev);
 
 		spin_unlock(&bp->lock);
 	}
@@ -1823,7 +2005,7 @@ static irqreturn_t dfx_interrupt(int irq, void *dev_id)
 
 static struct net_device_stats *dfx_ctl_get_stats(struct net_device *dev)
 	{
-	DFX_board_t	*bp = dev->priv;
+	DFX_board_t *bp = netdev_priv(dev);
 
 	/* Fill the bp->stats structure with driver-maintained counters */
 
@@ -2009,8 +2191,8 @@ static struct net_device_stats *dfx_ctl_get_stats(struct net_device *dev)
  */
 
 static void dfx_ctl_set_multicast_list(struct net_device *dev)
-	{
-	DFX_board_t			*bp = dev->priv;
+{
+	DFX_board_t *bp = netdev_priv(dev);
 	int					i;			/* used as index in for loop */
 	struct dev_mc_list	*dmi;		/* ptr to multicast addr entry */
 
@@ -2124,8 +2306,8 @@ static void dfx_ctl_set_multicast_list(struct net_device *dev)
 
 static int dfx_ctl_set_mac_address(struct net_device *dev, void *addr)
 	{
-	DFX_board_t		*bp = dev->priv;
 	struct sockaddr	*p_sockaddr = (struct sockaddr *)addr;
+	DFX_board_t *bp = netdev_priv(dev);
 
 	/* Copy unicast address to driver-maintained structs and update count */
 
@@ -2764,9 +2946,9 @@ static int dfx_rcv_init(DFX_board_t *bp, int get_buffers)
 
 			my_skb_align(newskb, 128);
 			bp->descr_block_virt->rcv_data[i + j].long_1 =
-				(u32)pci_map_single(bp->pci_dev, newskb->data,
+				(u32)dma_map_single(bp->bus_dev, newskb->data,
 						    NEW_SKB_SIZE,
-						    PCI_DMA_FROMDEVICE);
+						    DMA_FROM_DEVICE);
 			/*
 			 * p_rcv_buff_va is only used inside the
 			 * kernel so we put the skb pointer here.
@@ -2880,17 +3062,17 @@ static void dfx_rcv_queue_process(
 
 						my_skb_align(newskb, 128);
 						skb = (struct sk_buff *)bp->p_rcv_buff_va[entry];
-						pci_unmap_single(bp->pci_dev,
+						dma_unmap_single(bp->bus_dev,
 							bp->descr_block_virt->rcv_data[entry].long_1,
 							NEW_SKB_SIZE,
-							PCI_DMA_FROMDEVICE);
+							DMA_FROM_DEVICE);
 						skb_reserve(skb, RCV_BUFF_K_PADDING);
 						bp->p_rcv_buff_va[entry] = (char *)newskb;
 						bp->descr_block_virt->rcv_data[entry].long_1 =
-							(u32)pci_map_single(bp->pci_dev,
+							(u32)dma_map_single(bp->bus_dev,
 								newskb->data,
 								NEW_SKB_SIZE,
-								PCI_DMA_FROMDEVICE);
+								DMA_FROM_DEVICE);
 					} else
 						skb = NULL;
 				} else
@@ -3010,7 +3192,7 @@ static int dfx_xmt_queue_pkt(
 	)
 
 	{
-	DFX_board_t		*bp = dev->priv;
+	DFX_board_t		*bp = netdev_priv(dev);
 	u8			prod;				/* local transmit producer index */
 	PI_XMT_DESCR		*p_xmt_descr;		/* ptr to transmit descriptor block entry */
 	XMT_DRIVER_DESCR	*p_xmt_drv_descr;	/* ptr to transmit driver descriptor */
@@ -3116,8 +3298,8 @@ static int dfx_xmt_queue_pkt(
 	 */
 
 	p_xmt_descr->long_0	= (u32) (PI_XMT_DESCR_M_SOP | PI_XMT_DESCR_M_EOP | ((skb->len) << PI_XMT_DESCR_V_SEG_LEN));
-	p_xmt_descr->long_1 = (u32)pci_map_single(bp->pci_dev, skb->data,
-						  skb->len, PCI_DMA_TODEVICE);
+	p_xmt_descr->long_1 = (u32)dma_map_single(bp->bus_dev, skb->data,
+						  skb->len, DMA_TO_DEVICE);
 
 	/*
 	 * Verify that descriptor is actually available
@@ -3220,10 +3402,10 @@ static int dfx_xmt_done(DFX_board_t *bp)
 
 		/* Return skb to operating system */
 		comp = bp->rcv_xmt_reg.index.xmt_comp;
-		pci_unmap_single(bp->pci_dev,
+		dma_unmap_single(bp->bus_dev,
 				 bp->descr_block_virt->xmt_data[comp].long_1,
 				 p_xmt_drv_descr->p_skb->len,
-				 PCI_DMA_TODEVICE);
+				 DMA_TO_DEVICE);
 		dev_kfree_skb_irq(p_xmt_drv_descr->p_skb);
 
 		/*
@@ -3344,10 +3526,10 @@ static void dfx_xmt_flush( DFX_board_t *bp )
 
 		/* Return skb to operating system */
 		comp = bp->rcv_xmt_reg.index.xmt_comp;
-		pci_unmap_single(bp->pci_dev,
+		dma_unmap_single(bp->bus_dev,
 				 bp->descr_block_virt->xmt_data[comp].long_1,
 				 p_xmt_drv_descr->p_skb->len,
-				 PCI_DMA_TODEVICE);
+				 DMA_TO_DEVICE);
 		dev_kfree_skb(p_xmt_drv_descr->p_skb);
 
 		/* Increment transmit error counter */
@@ -3375,13 +3557,44 @@ static void dfx_xmt_flush( DFX_board_t *bp )
 	bp->cons_block_virt->xmt_rcv_data = prod_cons;
 	}
 
-static void __devexit dfx_remove_one_pci_or_eisa(struct pci_dev *pdev, struct net_device *dev)
+/*
+ * ==================
+ * = dfx_unregister =
+ * ==================
+ *
+ * Overview:
+ *   Shuts down an FDDI controller
+ *
+ * Returns:
+ *   Condition code
+ *
+ * Arguments:
+ *   bdev - pointer to device information
+ *
+ * Functional Description:
+ *
+ * Return Codes:
+ *   None
+ *
+ * Assumptions:
+ *   It compiles so it should work :-( (PCI cards do :-)
+ *
+ * Side Effects:
+ *   Device structures for FDDI adapters (fddi0, fddi1, etc) are
+ *   freed.
+ */
+static void __devexit dfx_unregister(struct device *bdev)
 {
-	DFX_board_t	*bp = dev->priv;
+	struct net_device *dev = dev_get_drvdata(bdev);
+	DFX_board_t *bp = netdev_priv(dev);
+	int dfx_bus_pci = DFX_BUS_PCI(bdev);
+	int dfx_bus_tc = DFX_BUS_TC(bdev);
+	int dfx_use_mmio = DFX_MMIO || dfx_bus_tc;
+	resource_size_t bar_start = 0;		/* pointer to port */
+	resource_size_t bar_len = 0;		/* resource length */
 	int		alloc_size;		/* total buffer size used */
 
 	unregister_netdev(dev);
-	release_region(dev->base_addr,  pdev ? PFI_K_CSR_IO_LEN : PI_ESIC_K_CSR_IO_LEN );
 
 	alloc_size = sizeof(PI_DESCR_BLOCK) +
 		     PI_CMD_REQ_K_SIZE_MAX + PI_CMD_RSP_K_SIZE_MAX +
@@ -3391,78 +3604,141 @@ static void __devexit dfx_remove_one_pci_or_eisa(struct pci_dev *pdev, struct ne
 		     sizeof(PI_CONSUMER_BLOCK) +
 		     (PI_ALIGN_K_DESC_BLK - 1);
 	if (bp->kmalloced)
-		pci_free_consistent(pdev, alloc_size, bp->kmalloced,
-				    bp->kmalloced_dma);
+		dma_free_coherent(bdev, alloc_size,
+				  bp->kmalloced, bp->kmalloced_dma);
+
+	dfx_bus_uninit(dev);
+
+	dfx_get_bars(bdev, &bar_start, &bar_len);
+	if (dfx_use_mmio) {
+		iounmap(bp->base.mem);
+		release_mem_region(bar_start, bar_len);
+	} else
+		release_region(bar_start, bar_len);
+
+	if (dfx_bus_pci)
+		pci_disable_device(to_pci_dev(bdev));
+
 	free_netdev(dev);
 }
 
-static void __devexit dfx_remove_one (struct pci_dev *pdev)
-{
-	struct net_device *dev = pci_get_drvdata(pdev);
 
-	dfx_remove_one_pci_or_eisa(pdev, dev);
-	pci_set_drvdata(pdev, NULL);
-}
+static int __devinit __unused dfx_dev_register(struct device *);
+static int __devexit __unused dfx_dev_unregister(struct device *);
 
-static struct pci_device_id dfx_pci_tbl[] = {
-	{ PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_FDDI, PCI_ANY_ID, PCI_ANY_ID, },
-	{ 0, }
+#ifdef CONFIG_PCI
+static int __devinit dfx_pci_register(struct pci_dev *,
+				      const struct pci_device_id *);
+static void __devexit dfx_pci_unregister(struct pci_dev *);
+
+static struct pci_device_id dfx_pci_table[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_FDDI) },
+	{ }
 };
-MODULE_DEVICE_TABLE(pci, dfx_pci_tbl);
+MODULE_DEVICE_TABLE(pci, dfx_pci_table);
 
-static struct pci_driver dfx_driver = {
+static struct pci_driver dfx_pci_driver = {
 	.name		= "defxx",
-	.probe		= dfx_init_one,
-	.remove		= __devexit_p(dfx_remove_one),
-	.id_table	= dfx_pci_tbl,
+	.id_table	= dfx_pci_table,
+	.probe		= dfx_pci_register,
+	.remove		= __devexit_p(dfx_pci_unregister),
 };
 
-static int dfx_have_pci;
-static int dfx_have_eisa;
-
+static __devinit int dfx_pci_register(struct pci_dev *pdev,
+				      const struct pci_device_id *ent)
+{
+	return dfx_register(&pdev->dev);
+}
 
-static void __exit dfx_eisa_cleanup(void)
+static void __devexit dfx_pci_unregister(struct pci_dev *pdev)
 {
-	struct net_device *dev = root_dfx_eisa_dev;
+	dfx_unregister(&pdev->dev);
+}
+#endif /* CONFIG_PCI */
+
+#ifdef CONFIG_EISA
+static struct eisa_device_id dfx_eisa_table[] = {
+        { "DEC3001", DEFEA_PROD_ID_1 },
+        { "DEC3002", DEFEA_PROD_ID_2 },
+        { "DEC3003", DEFEA_PROD_ID_3 },
+        { "DEC3004", DEFEA_PROD_ID_4 },
+        { }
+};
+MODULE_DEVICE_TABLE(eisa, dfx_eisa_table);
+
+static struct eisa_driver dfx_eisa_driver = {
+	.id_table	= dfx_eisa_table,
+	.driver		= {
+		.name	= "defxx",
+		.bus	= &eisa_bus_type,
+		.probe	= dfx_dev_register,
+		.remove	= __devexit_p(dfx_dev_unregister),
+	},
+};
+#endif /* CONFIG_EISA */
+
+#ifdef CONFIG_TC
+static struct tc_device_id const dfx_tc_table[] = {
+	{ "DEC     ", "PMAF-FA " },
+	{ "DEC     ", "PMAF-FD " },
+	{ "DEC     ", "PMAF-FS " },
+	{ "DEC     ", "PMAF-FU " },
+	{ }
+};
+MODULE_DEVICE_TABLE(tc, dfx_tc_table);
+
+static struct tc_driver dfx_tc_driver = {
+	.id_table	= dfx_tc_table,
+	.driver		= {
+		.name	= "defxx",
+		.bus	= &tc_bus_type,
+		.probe	= dfx_dev_register,
+		.remove	= __devexit_p(dfx_dev_unregister),
+	},
+};
+#endif /* CONFIG_TC */
 
-	while (dev)
-	{
-		struct net_device *tmp;
-		DFX_board_t *bp;
+static int __devinit __unused dfx_dev_register(struct device *dev)
+{
+	int status;
 
-		bp = (DFX_board_t*)dev->priv;
-		tmp = bp->next;
-		dfx_remove_one_pci_or_eisa(NULL, dev);
-		dev = tmp;
-	}
+	status = dfx_register(dev);
+	if (!status)
+		get_device(dev);
+	return status;
 }
 
-static int __init dfx_init(void)
+static int __devexit __unused dfx_dev_unregister(struct device *dev)
 {
-	int rc_pci, rc_eisa;
-
-	rc_pci = pci_register_driver(&dfx_driver);
-	if (rc_pci >= 0) dfx_have_pci = 1;
+	put_device(dev);
+	dfx_unregister(dev);
+	return 0;
+}
 
-	rc_eisa = dfx_eisa_init();
-	if (rc_eisa >= 0) dfx_have_eisa = 1;
 
-	return ((rc_eisa < 0) ? 0 : rc_eisa)  + ((rc_pci < 0) ? 0 : rc_pci);
+static int __devinit dfx_init(void)
+{
+	int status;
+
+	status = pci_register_driver(&dfx_pci_driver);
+	if (!status)
+		status = eisa_driver_register(&dfx_eisa_driver);
+	if (!status)
+		status = tc_register_driver(&dfx_tc_driver);
+	return status;
 }
 
-static void __exit dfx_cleanup(void)
+static void __devexit dfx_cleanup(void)
 {
-	if (dfx_have_pci)
-		pci_unregister_driver(&dfx_driver);
-	if (dfx_have_eisa)
-		dfx_eisa_cleanup();
-
+	tc_unregister_driver(&dfx_tc_driver);
+	eisa_driver_unregister(&dfx_eisa_driver);
+	pci_unregister_driver(&dfx_pci_driver);
 }
 
 module_init(dfx_init);
 module_exit(dfx_cleanup);
 MODULE_AUTHOR("Lawrence V. Stefani");
-MODULE_DESCRIPTION("DEC FDDIcontroller EISA/PCI (DEFEA/DEFPA) driver "
+MODULE_DESCRIPTION("DEC FDDIcontroller TC/EISA/PCI (DEFTA/DEFEA/DEFPA) driver "
 		   DRV_VERSION " " DRV_RELDATE);
 MODULE_LICENSE("GPL");
 
diff --git a/drivers/net/defxx.h b/drivers/net/defxx.h
index 2ce8f97253eb..19a6f64df198 100644
--- a/drivers/net/defxx.h
+++ b/drivers/net/defxx.h
@@ -26,6 +26,7 @@
  *		12-Sep-96	LVS		Removed packet request header pointers.
  *		04 Aug 2003	macro		Converted to the DMA API.
  *		23 Oct 2006	macro		Big-endian host support.
+ *		14 Dec 2006	macro		TURBOchannel support.
  */
 
 #ifndef _DEFXX_H_
@@ -1471,9 +1472,17 @@ typedef union
 
 #endif /* __BIG_ENDIAN */
 
+/* Define TC PDQ CSR offset and length */
+
+#define PI_TC_K_CSR_OFFSET		0x100000
+#define PI_TC_K_CSR_LEN			0x40		/* 64 bytes */
+
 /* Define EISA controller register offsets */
 
-#define PI_ESIC_K_BURST_HOLDOFF		0x040
+#define PI_ESIC_K_CSR_IO_LEN		0x80		/* 128 bytes */
+
+#define PI_DEFEA_K_BURST_HOLDOFF	0x040
+
 #define PI_ESIC_K_SLOT_ID            	0xC80
 #define PI_ESIC_K_SLOT_CNTRL		0xC84
 #define PI_ESIC_K_MEM_ADD_CMP_0     	0xC85
@@ -1488,14 +1497,14 @@ typedef union
 #define PI_ESIC_K_MEM_ADD_LO_CMP_0  	0xC8E
 #define PI_ESIC_K_MEM_ADD_LO_CMP_1  	0xC8F
 #define PI_ESIC_K_MEM_ADD_LO_CMP_2  	0xC90
-#define PI_ESIC_K_IO_CMP_0_0		0xC91
-#define PI_ESIC_K_IO_CMP_0_1		0xC92
-#define PI_ESIC_K_IO_CMP_1_0		0xC93
-#define PI_ESIC_K_IO_CMP_1_1		0xC94
-#define PI_ESIC_K_IO_CMP_2_0		0xC95
-#define PI_ESIC_K_IO_CMP_2_1		0xC96
-#define PI_ESIC_K_IO_CMP_3_0		0xC97
-#define PI_ESIC_K_IO_CMP_3_1		0xC98
+#define PI_ESIC_K_IO_ADD_CMP_0_0	0xC91
+#define PI_ESIC_K_IO_ADD_CMP_0_1	0xC92
+#define PI_ESIC_K_IO_ADD_CMP_1_0	0xC93
+#define PI_ESIC_K_IO_ADD_CMP_1_1	0xC94
+#define PI_ESIC_K_IO_ADD_CMP_2_0	0xC95
+#define PI_ESIC_K_IO_ADD_CMP_2_1	0xC96
+#define PI_ESIC_K_IO_ADD_CMP_3_0	0xC97
+#define PI_ESIC_K_IO_ADD_CMP_3_1	0xC98
 #define PI_ESIC_K_IO_ADD_MASK_0_0    	0xC99
 #define PI_ESIC_K_IO_ADD_MASK_0_1    	0xC9A
 #define PI_ESIC_K_IO_ADD_MASK_1_0    	0xC9B
@@ -1518,11 +1527,16 @@ typedef union
 #define PI_ESIC_K_INPUT_PORT         	0xCAC
 #define PI_ESIC_K_OUTPUT_PORT        	0xCAD
 #define PI_ESIC_K_FUNCTION_CNTRL	0xCAE
-#define PI_ESIC_K_CSR_IO_LEN		PI_ESIC_K_FUNCTION_CNTRL+1	/* always last reg + 1 */
 
-/* Define the value all drivers must write to the function control register. */
+/* Define the bits in the function control register. */
 
-#define PI_ESIC_K_FUNCTION_CNTRL_IO_ENB	0x03
+#define PI_FUNCTION_CNTRL_M_IOCS0	0x01
+#define PI_FUNCTION_CNTRL_M_IOCS1	0x02
+#define PI_FUNCTION_CNTRL_M_IOCS2	0x04
+#define PI_FUNCTION_CNTRL_M_IOCS3	0x08
+#define PI_FUNCTION_CNTRL_M_MEMCS0	0x10
+#define PI_FUNCTION_CNTRL_M_MEMCS1	0x20
+#define PI_FUNCTION_CNTRL_M_DMA		0x80
 
 /* Define the bits in the slot control register. */
 
@@ -1540,6 +1554,10 @@ typedef union
 #define PI_BURST_HOLDOFF_V_RESERVED	1
 #define PI_BURST_HOLDOFF_V_MEM_MAP	0
 
+/* Define the implicit mask of the Memory Address Mask Register.  */
+
+#define PI_MEM_ADD_MASK_M		0x3ff
+
 /*
  * Define the fields in the IO Compare registers.
  * The driver must initialize the slot field with the slot ID shifted by the
@@ -1577,6 +1595,7 @@ typedef union
 #define DEFEA_PROD_ID_1		0x0130A310		/* DEC product 300, rev 1	*/
 #define DEFEA_PROD_ID_2		0x0230A310		/* DEC product 300, rev 2	*/
 #define DEFEA_PROD_ID_3		0x0330A310		/* DEC product 300, rev 3	*/
+#define DEFEA_PROD_ID_4		0x0430A310		/* DEC product 300, rev 4	*/
 
 /**********************************************/
 /* Digital PFI Specification v1.0 Definitions */
@@ -1633,12 +1652,6 @@ typedef union
 #define PFI_STATUS_V_FIFO_EMPTY		 1
 #define PFI_STATUS_V_DMA_IN_PROGRESS 0
 
-#define DFX_MAX_EISA_SLOTS		16			/* maximum number of EISA slots to scan */
-#define DFX_MAX_NUM_BOARDS		8			/* maximum number of adapters supported */
-
-#define DFX_BUS_TYPE_PCI		0			/* type code for DEC FDDIcontroller/PCI */
-#define DFX_BUS_TYPE_EISA		1			/* type code for DEC FDDIcontroller/EISA */
-
 #define DFX_FC_PRH2_PRH1_PRH0		0x54003820	/* Packet Request Header bytes + FC */
 #define DFX_PRH0_BYTE			0x20		/* Packet Request Header byte 0 */
 #define DFX_PRH1_BYTE			0x38		/* Packet Request Header byte 1 */
@@ -1756,10 +1769,11 @@ typedef struct DFX_board_tag
 	/* Store device, bus-specific, and parameter information for this adapter */
 
 	struct net_device		*dev;						/* pointer to device structure */
-	struct net_device		*next;
-	u32				bus_type;					/* bus type (0 == PCI, 1 == EISA) */
-	u16				base_addr;					/* base I/O address (same as dev->base_addr) */
-	struct pci_dev *		pci_dev;
+	union {
+		void __iomem *mem;
+		int port;
+	} base;										/* base address */
+	struct device			*bus_dev;
 	u32				full_duplex_enb;				/* FDDI Full Duplex enable (1 == on, 2 == off) */
 	u32				req_ttrt;					/* requested TTRT value (in 80ns units) */
 	u32				burst_size;					/* adapter burst size (enumerated) */
diff --git a/drivers/scsi/NCR53C9x.c b/drivers/scsi/NCR53C9x.c
index 3c912ee29da0..8b5334c56f0a 100644
--- a/drivers/scsi/NCR53C9x.c
+++ b/drivers/scsi/NCR53C9x.c
@@ -528,12 +528,16 @@ void esp_bootup_reset(struct NCR_ESP *esp, struct ESP_regs *eregs)
 /* Allocate structure and insert basic data such as SCSI chip frequency
  * data and a pointer to the device
  */
-struct NCR_ESP* esp_allocate(struct scsi_host_template *tpnt, void *esp_dev)
+struct NCR_ESP* esp_allocate(struct scsi_host_template *tpnt, void *esp_dev,
+			     int hotplug)
 {
 	struct NCR_ESP *esp, *elink;
 	struct Scsi_Host *esp_host;
 
-	esp_host = scsi_register(tpnt, sizeof(struct NCR_ESP));
+	if (hotplug)
+		esp_host = scsi_host_alloc(tpnt, sizeof(struct NCR_ESP));
+	else
+		esp_host = scsi_register(tpnt, sizeof(struct NCR_ESP));
 	if(!esp_host)
 		panic("Cannot register ESP SCSI host");
 	esp = (struct NCR_ESP *) esp_host->hostdata;
diff --git a/drivers/scsi/NCR53C9x.h b/drivers/scsi/NCR53C9x.h
index 521e3f842cfd..d85cb73a9f69 100644
--- a/drivers/scsi/NCR53C9x.h
+++ b/drivers/scsi/NCR53C9x.h
@@ -652,7 +652,7 @@ extern int nesps, esps_in_use, esps_running;
 
 /* External functions */
 extern void esp_bootup_reset(struct NCR_ESP *esp, struct ESP_regs *eregs);
-extern struct NCR_ESP *esp_allocate(struct scsi_host_template *, void *);
+extern struct NCR_ESP *esp_allocate(struct scsi_host_template *, void *, int);
 extern void esp_deallocate(struct NCR_ESP *);
 extern void esp_release(void);
 extern void esp_initialize(struct NCR_ESP *);
diff --git a/drivers/scsi/blz1230.c b/drivers/scsi/blz1230.c
index 329a8f297b31..23f7c24ab809 100644
--- a/drivers/scsi/blz1230.c
+++ b/drivers/scsi/blz1230.c
@@ -121,7 +121,8 @@ int __init blz1230_esp_detect(struct scsi_host_template *tpnt)
 		 */
 		address = ZTWO_VADDR(board);
 		eregs = (struct ESP_regs *)(address + REAL_BLZ1230_ESP_ADDR);
-		esp = esp_allocate(tpnt, (void *)board+REAL_BLZ1230_ESP_ADDR);
+		esp = esp_allocate(tpnt, (void *)board + REAL_BLZ1230_ESP_ADDR,
+				   0);
 
 		esp_write(eregs->esp_cfg1, (ESP_CONFIG1_PENABLE | 7));
 		udelay(5);
diff --git a/drivers/scsi/blz2060.c b/drivers/scsi/blz2060.c
index b6c137b97350..b6203ec00961 100644
--- a/drivers/scsi/blz2060.c
+++ b/drivers/scsi/blz2060.c
@@ -100,7 +100,7 @@ int __init blz2060_esp_detect(struct scsi_host_template *tpnt)
 	    unsigned long board = z->resource.start;
 	    if (request_mem_region(board+BLZ2060_ESP_ADDR,
 				   sizeof(struct ESP_regs), "NCR53C9x")) {
-		esp = esp_allocate(tpnt, (void *)board+BLZ2060_ESP_ADDR);
+		esp = esp_allocate(tpnt, (void *)board + BLZ2060_ESP_ADDR, 0);
 
 		/* Do command transfer with programmed I/O */
 		esp->do_pio_cmds = 1;
diff --git a/drivers/scsi/cyberstorm.c b/drivers/scsi/cyberstorm.c
index 7c7cfb54e897..c6b98a42e89d 100644
--- a/drivers/scsi/cyberstorm.c
+++ b/drivers/scsi/cyberstorm.c
@@ -126,7 +126,7 @@ int __init cyber_esp_detect(struct scsi_host_template *tpnt)
 					   sizeof(struct ESP_regs));
 			return 0;
 		}
-		esp = esp_allocate(tpnt, (void *)board+CYBER_ESP_ADDR);
+		esp = esp_allocate(tpnt, (void *)board + CYBER_ESP_ADDR, 0);
 
 		/* Do command transfer with programmed I/O */
 		esp->do_pio_cmds = 1;
diff --git a/drivers/scsi/cyberstormII.c b/drivers/scsi/cyberstormII.c
index d88cb9cf091e..e336e853e66f 100644
--- a/drivers/scsi/cyberstormII.c
+++ b/drivers/scsi/cyberstormII.c
@@ -98,7 +98,7 @@ int __init cyberII_esp_detect(struct scsi_host_template *tpnt)
 		address = (unsigned long)ZTWO_VADDR(board);
 		eregs = (struct ESP_regs *)(address + CYBERII_ESP_ADDR);
 
-		esp = esp_allocate(tpnt, (void *)board+CYBERII_ESP_ADDR);
+		esp = esp_allocate(tpnt, (void *)board + CYBERII_ESP_ADDR, 0);
 
 		esp_write(eregs->esp_cfg1, (ESP_CONFIG1_PENABLE | 7));
 		udelay(5);
diff --git a/drivers/scsi/dec_esp.c b/drivers/scsi/dec_esp.c
index c29ccbc44693..d42ad663ffee 100644
--- a/drivers/scsi/dec_esp.c
+++ b/drivers/scsi/dec_esp.c
@@ -18,7 +18,7 @@
  * 20001005	- Initialization fixes for 2.4.0-test9
  * 			  Florian Lohoff <flo@rfc822.org>
  *
- *	Copyright (C) 2002, 2003, 2005  Maciej W. Rozycki
+ *	Copyright (C) 2002, 2003, 2005, 2006  Maciej W. Rozycki
  */
 
 #include <linux/kernel.h>
@@ -30,6 +30,7 @@
 #include <linux/proc_fs.h>
 #include <linux/spinlock.h>
 #include <linux/stat.h>
+#include <linux/tc.h>
 
 #include <asm/dma.h>
 #include <asm/irq.h>
@@ -42,7 +43,6 @@
 #include <asm/dec/ioasic_ints.h>
 #include <asm/dec/machtype.h>
 #include <asm/dec/system.h>
-#include <asm/dec/tc.h>
 
 #define DEC_SCSI_SREG 0
 #define DEC_SCSI_DMAREG 0x40000
@@ -98,51 +98,33 @@ static irqreturn_t scsi_dma_merr_int(int, void *);
 static irqreturn_t scsi_dma_err_int(int, void *);
 static irqreturn_t scsi_dma_int(int, void *);
 
-static int dec_esp_detect(struct scsi_host_template * tpnt);
-
-static int dec_esp_release(struct Scsi_Host *shost)
-{
-	if (shost->irq)
-		free_irq(shost->irq, NULL);
-	if (shost->io_port && shost->n_io_port)
-		release_region(shost->io_port, shost->n_io_port);
-	scsi_unregister(shost);
-	return 0;
-}
-
-static struct scsi_host_template driver_template = {
-	.proc_name		= "dec_esp",
-	.proc_info		= esp_proc_info,
+static struct scsi_host_template dec_esp_template = {
+	.module			= THIS_MODULE,
 	.name			= "NCR53C94",
-	.detect			= dec_esp_detect,
-	.slave_alloc		= esp_slave_alloc,
-	.slave_destroy		= esp_slave_destroy,
-	.release		= dec_esp_release,
 	.info			= esp_info,
 	.queuecommand		= esp_queue,
 	.eh_abort_handler	= esp_abort,
 	.eh_bus_reset_handler	= esp_reset,
+	.slave_alloc		= esp_slave_alloc,
+	.slave_destroy		= esp_slave_destroy,
+	.proc_info		= esp_proc_info,
+	.proc_name		= "dec_esp",
 	.can_queue		= 7,
-	.this_id		= 7,
 	.sg_tablesize		= SG_ALL,
 	.cmd_per_lun		= 1,
 	.use_clustering		= DISABLE_CLUSTERING,
 };
 
-
-#include "scsi_module.c"
+static struct NCR_ESP *dec_esp_platform;
 
 /***************************************************************** Detection */
-static int dec_esp_detect(struct scsi_host_template * tpnt)
+static int dec_esp_platform_probe(void)
 {
 	struct NCR_ESP *esp;
-	struct ConfigDev *esp_dev;
-	int slot;
-	unsigned long mem_start;
+	int err = 0;
 
 	if (IOASIC) {
-		esp_dev = 0;
-		esp = esp_allocate(tpnt, (void *) esp_dev);
+		esp = esp_allocate(&dec_esp_template, NULL, 1);
 
 		/* Do command transfer with programmed I/O */
 		esp->do_pio_cmds = 1;
@@ -200,112 +182,175 @@ static int dec_esp_detect(struct scsi_host_template * tpnt)
 		/* Check for differential SCSI-bus */
 		esp->diff = 0;
 
+		err = request_irq(esp->irq, esp_intr, IRQF_DISABLED,
+				  "ncr53c94", esp->ehost);
+		if (err)
+			goto err_alloc;
+		err = request_irq(dec_interrupt[DEC_IRQ_ASC_MERR],
+				  scsi_dma_merr_int, IRQF_DISABLED,
+				  "ncr53c94 error", esp->ehost);
+		if (err)
+			goto err_irq;
+		err = request_irq(dec_interrupt[DEC_IRQ_ASC_ERR],
+				  scsi_dma_err_int, IRQF_DISABLED,
+				  "ncr53c94 overrun", esp->ehost);
+		if (err)
+			goto err_irq_merr;
+		err = request_irq(dec_interrupt[DEC_IRQ_ASC_DMA], scsi_dma_int,
+				  IRQF_DISABLED, "ncr53c94 dma", esp->ehost);
+		if (err)
+			goto err_irq_err;
+
 		esp_initialize(esp);
 
-		if (request_irq(esp->irq, esp_intr, IRQF_DISABLED,
-				"ncr53c94", esp->ehost))
-			goto err_dealloc;
-		if (request_irq(dec_interrupt[DEC_IRQ_ASC_MERR],
-				scsi_dma_merr_int, IRQF_DISABLED,
-				"ncr53c94 error", esp->ehost))
-			goto err_free_irq;
-		if (request_irq(dec_interrupt[DEC_IRQ_ASC_ERR],
-				scsi_dma_err_int, IRQF_DISABLED,
-				"ncr53c94 overrun", esp->ehost))
-			goto err_free_irq_merr;
-		if (request_irq(dec_interrupt[DEC_IRQ_ASC_DMA],
-				scsi_dma_int, IRQF_DISABLED,
-				"ncr53c94 dma", esp->ehost))
-			goto err_free_irq_err;
+		err = scsi_add_host(esp->ehost, NULL);
+		if (err) {
+			printk(KERN_ERR "ESP: Unable to register adapter\n");
+			goto err_irq_dma;
+		}
+
+		scsi_scan_host(esp->ehost);
 
+		dec_esp_platform = esp;
 	}
 
-	if (TURBOCHANNEL) {
-		while ((slot = search_tc_card("PMAZ-AA")) >= 0) {
-			claim_tc_card(slot);
-
-			esp_dev = 0;
-			esp = esp_allocate(tpnt, (void *) esp_dev);
-
-			mem_start = get_tc_base_addr(slot);
-
-			/* Store base addr into esp struct */
-			esp->slot = CPHYSADDR(mem_start);
-
-			esp->dregs = 0;
-			esp->eregs = (void *)CKSEG1ADDR(mem_start +
-							DEC_SCSI_SREG);
-			esp->do_pio_cmds = 1;
-
-			/* Set the command buffer */
-			esp->esp_command = (volatile unsigned char *) pmaz_cmd_buffer;
-
-			/* get virtual dma address for command buffer */
-			esp->esp_command_dvma = virt_to_phys(pmaz_cmd_buffer);
-
-			esp->cfreq = get_tc_speed();
-
-			esp->irq = get_tc_irq_nr(slot);
-
-			/* Required functions */
-			esp->dma_bytes_sent = &dma_bytes_sent;
-			esp->dma_can_transfer = &dma_can_transfer;
-			esp->dma_dump_state = &dma_dump_state;
-			esp->dma_init_read = &pmaz_dma_init_read;
-			esp->dma_init_write = &pmaz_dma_init_write;
-			esp->dma_ints_off = &pmaz_dma_ints_off;
-			esp->dma_ints_on = &pmaz_dma_ints_on;
-			esp->dma_irq_p = &dma_irq_p;
-			esp->dma_ports_p = &dma_ports_p;
-			esp->dma_setup = &pmaz_dma_setup;
-
-			/* Optional functions */
-			esp->dma_barrier = 0;
-			esp->dma_drain = &pmaz_dma_drain;
-			esp->dma_invalidate = 0;
-			esp->dma_irq_entry = 0;
-			esp->dma_irq_exit = 0;
-			esp->dma_poll = 0;
-			esp->dma_reset = 0;
-			esp->dma_led_off = 0;
-			esp->dma_led_on = 0;
-
-			esp->dma_mmu_get_scsi_one = pmaz_dma_mmu_get_scsi_one;
-			esp->dma_mmu_get_scsi_sgl = 0;
-			esp->dma_mmu_release_scsi_one = 0;
-			esp->dma_mmu_release_scsi_sgl = 0;
-			esp->dma_advance_sg = 0;
-
- 			if (request_irq(esp->irq, esp_intr, IRQF_DISABLED,
- 					 "PMAZ_AA", esp->ehost)) {
- 				esp_deallocate(esp);
- 				release_tc_card(slot);
- 				continue;
- 			}
-			esp->scsi_id = 7;
-			esp->diff = 0;
-			esp_initialize(esp);
-		}
+	return 0;
+
+err_irq_dma:
+	free_irq(dec_interrupt[DEC_IRQ_ASC_DMA], esp->ehost);
+err_irq_err:
+	free_irq(dec_interrupt[DEC_IRQ_ASC_ERR], esp->ehost);
+err_irq_merr:
+	free_irq(dec_interrupt[DEC_IRQ_ASC_MERR], esp->ehost);
+err_irq:
+	free_irq(esp->irq, esp->ehost);
+err_alloc:
+	esp_deallocate(esp);
+	scsi_host_put(esp->ehost);
+	return err;
+}
+
+static int __init dec_esp_probe(struct device *dev)
+{
+	struct NCR_ESP *esp;
+	resource_size_t start, len;
+	int err;
+
+	esp = esp_allocate(&dec_esp_template,  NULL, 1);
+
+	dev_set_drvdata(dev, esp);
+
+	start = to_tc_dev(dev)->resource.start;
+	len = to_tc_dev(dev)->resource.end - start + 1;
+
+	if (!request_mem_region(start, len, dev->bus_id)) {
+		printk(KERN_ERR "%s: Unable to reserve MMIO resource\n",
+		       dev->bus_id);
+		err = -EBUSY;
+		goto err_alloc;
 	}
 
-	if(nesps) {
-		printk("ESP: Total of %d ESP hosts found, %d actually in use.\n", nesps, esps_in_use);
-		esps_running = esps_in_use;
-		return esps_in_use;
+	/* Store base addr into esp struct.  */
+	esp->slot = start;
+
+	esp->dregs = 0;
+	esp->eregs = (void *)CKSEG1ADDR(start + DEC_SCSI_SREG);
+	esp->do_pio_cmds = 1;
+
+	/* Set the command buffer.  */
+	esp->esp_command = (volatile unsigned char *)pmaz_cmd_buffer;
+
+	/* Get virtual dma address for command buffer.  */
+	esp->esp_command_dvma = virt_to_phys(pmaz_cmd_buffer);
+
+	esp->cfreq = tc_get_speed(to_tc_dev(dev)->bus);
+
+	esp->irq = to_tc_dev(dev)->interrupt;
+
+	/* Required functions.  */
+	esp->dma_bytes_sent = &dma_bytes_sent;
+	esp->dma_can_transfer = &dma_can_transfer;
+	esp->dma_dump_state = &dma_dump_state;
+	esp->dma_init_read = &pmaz_dma_init_read;
+	esp->dma_init_write = &pmaz_dma_init_write;
+	esp->dma_ints_off = &pmaz_dma_ints_off;
+	esp->dma_ints_on = &pmaz_dma_ints_on;
+	esp->dma_irq_p = &dma_irq_p;
+	esp->dma_ports_p = &dma_ports_p;
+	esp->dma_setup = &pmaz_dma_setup;
+
+	/* Optional functions.  */
+	esp->dma_barrier = 0;
+	esp->dma_drain = &pmaz_dma_drain;
+	esp->dma_invalidate = 0;
+	esp->dma_irq_entry = 0;
+	esp->dma_irq_exit = 0;
+	esp->dma_poll = 0;
+	esp->dma_reset = 0;
+	esp->dma_led_off = 0;
+	esp->dma_led_on = 0;
+
+	esp->dma_mmu_get_scsi_one = pmaz_dma_mmu_get_scsi_one;
+	esp->dma_mmu_get_scsi_sgl = 0;
+	esp->dma_mmu_release_scsi_one = 0;
+	esp->dma_mmu_release_scsi_sgl = 0;
+	esp->dma_advance_sg = 0;
+
+	err = request_irq(esp->irq, esp_intr, IRQF_DISABLED, "PMAZ_AA",
+			  esp->ehost);
+	if (err) {
+		printk(KERN_ERR "%s: Unable to get IRQ %d\n",
+		       dev->bus_id, esp->irq);
+		goto err_resource;
+	}
+
+	esp->scsi_id = 7;
+	esp->diff = 0;
+	esp_initialize(esp);
+
+	err = scsi_add_host(esp->ehost, dev);
+	if (err) {
+		printk(KERN_ERR "%s: Unable to register adapter\n",
+		       dev->bus_id);
+		goto err_irq;
 	}
+
+	scsi_scan_host(esp->ehost);
+
 	return 0;
 
-err_free_irq_err:
-	free_irq(dec_interrupt[DEC_IRQ_ASC_ERR], scsi_dma_err_int);
-err_free_irq_merr:
-	free_irq(dec_interrupt[DEC_IRQ_ASC_MERR], scsi_dma_merr_int);
-err_free_irq:
-	free_irq(esp->irq, esp_intr);
-err_dealloc:
+err_irq:
+	free_irq(esp->irq, esp->ehost);
+
+err_resource:
+	release_mem_region(start, len);
+
+err_alloc:
 	esp_deallocate(esp);
-	return 0;
+	scsi_host_put(esp->ehost);
+	return err;
+}
+
+static void __exit dec_esp_platform_remove(void)
+{
+	struct NCR_ESP *esp = dec_esp_platform;
+
+	free_irq(esp->irq, esp->ehost);
+	esp_deallocate(esp);
+	scsi_host_put(esp->ehost);
+	dec_esp_platform = NULL;
 }
 
+static void __exit dec_esp_remove(struct device *dev)
+{
+	struct NCR_ESP *esp = dev_get_drvdata(dev);
+
+	free_irq(esp->irq, esp->ehost);
+	esp_deallocate(esp);
+	scsi_host_put(esp->ehost);
+}
+
+
 /************************************************************* DMA Functions */
 static irqreturn_t scsi_dma_merr_int(int irq, void *dev_id)
 {
@@ -576,3 +621,67 @@ static void pmaz_dma_mmu_get_scsi_one(struct NCR_ESP *esp, struct scsi_cmnd * sp
 {
 	sp->SCp.ptr = (char *)virt_to_phys(sp->request_buffer);
 }
+
+
+#ifdef CONFIG_TC
+static int __init dec_esp_tc_probe(struct device *dev);
+static int __exit dec_esp_tc_remove(struct device *dev);
+
+static const struct tc_device_id dec_esp_tc_table[] = {
+        { "DEC     ", "PMAZ-AA " },
+        { }
+};
+MODULE_DEVICE_TABLE(tc, dec_esp_tc_table);
+
+static struct tc_driver dec_esp_tc_driver = {
+        .id_table       = dec_esp_tc_table,
+        .driver         = {
+                .name   = "dec_esp",
+                .bus    = &tc_bus_type,
+                .probe  = dec_esp_tc_probe,
+                .remove = __exit_p(dec_esp_tc_remove),
+        },
+};
+
+static int __init dec_esp_tc_probe(struct device *dev)
+{
+	int status = dec_esp_probe(dev);
+	if (!status)
+		get_device(dev);
+	return status;
+}
+
+static int __exit dec_esp_tc_remove(struct device *dev)
+{
+	put_device(dev);
+	dec_esp_remove(dev);
+	return 0;
+}
+#endif
+
+static int __init dec_esp_init(void)
+{
+	int status;
+
+	status = tc_register_driver(&dec_esp_tc_driver);
+	if (!status)
+		dec_esp_platform_probe();
+
+	if (nesps) {
+		pr_info("ESP: Total of %d ESP hosts found, "
+			"%d actually in use.\n", nesps, esps_in_use);
+		esps_running = esps_in_use;
+	}
+
+	return status;
+}
+
+static void __exit dec_esp_exit(void)
+{
+	dec_esp_platform_remove();
+	tc_unregister_driver(&dec_esp_tc_driver);
+}
+
+
+module_init(dec_esp_init);
+module_exit(dec_esp_exit);
diff --git a/drivers/scsi/fastlane.c b/drivers/scsi/fastlane.c
index 2a1c5c22b9e0..4266a2139b5f 100644
--- a/drivers/scsi/fastlane.c
+++ b/drivers/scsi/fastlane.c
@@ -142,7 +142,7 @@ int __init fastlane_esp_detect(struct scsi_host_template *tpnt)
 		if (board < 0x1000000) {
 			goto err_release;
 		}
-		esp = esp_allocate(tpnt, (void *)board+FASTLANE_ESP_ADDR);
+		esp = esp_allocate(tpnt, (void *)board + FASTLANE_ESP_ADDR, 0);
 
 		/* Do command transfer with programmed I/O */
 		esp->do_pio_cmds = 1;
diff --git a/drivers/scsi/jazz_esp.c b/drivers/scsi/jazz_esp.c
index bfac4441d89f..19dd4b962e18 100644
--- a/drivers/scsi/jazz_esp.c
+++ b/drivers/scsi/jazz_esp.c
@@ -75,7 +75,7 @@ static int jazz_esp_detect(struct scsi_host_template *tpnt)
      */
     if (1) {
 	esp_dev = NULL;
-	esp = esp_allocate(tpnt, (void *) esp_dev);
+	esp = esp_allocate(tpnt, esp_dev, 0);
 	
 	/* Do command transfer with programmed I/O */
 	esp->do_pio_cmds = 1;
diff --git a/drivers/scsi/mac_esp.c b/drivers/scsi/mac_esp.c
index 3586fac9be9a..bcb49021b7e2 100644
--- a/drivers/scsi/mac_esp.c
+++ b/drivers/scsi/mac_esp.c
@@ -351,7 +351,7 @@ int mac_esp_detect(struct scsi_host_template * tpnt)
 	for (chipnum = 0; chipnum < chipspresent; chipnum ++) {
 		struct NCR_ESP * esp;
 
-		esp = esp_allocate(tpnt, (void *) NULL);
+		esp = esp_allocate(tpnt, NULL, 0);
 		esp->eregs = (struct ESP_regs *) get_base(chipnum);
 
 		esp->dma_irq_p = &esp_dafb_dma_irq_p;
diff --git a/drivers/scsi/mca_53c9x.c b/drivers/scsi/mca_53c9x.c
index 998a8bbc1a4b..d693d0f21395 100644
--- a/drivers/scsi/mca_53c9x.c
+++ b/drivers/scsi/mca_53c9x.c
@@ -122,7 +122,7 @@ static int mca_esp_detect(struct scsi_host_template *tpnt)
 		if ((slot = mca_find_adapter(*id_to_check, 0)) !=
 		  MCA_NOTFOUND) 
 		{
-			esp = esp_allocate(tpnt, (void *) NULL);
+			esp = esp_allocate(tpnt, NULL, 0);
 
 			pos[0] = mca_read_stored_pos(slot, 2);
 			pos[1] = mca_read_stored_pos(slot, 3);
diff --git a/drivers/scsi/oktagon_esp.c b/drivers/scsi/oktagon_esp.c
index c116a6ae3c54..26a6d55faf3e 100644
--- a/drivers/scsi/oktagon_esp.c
+++ b/drivers/scsi/oktagon_esp.c
@@ -133,7 +133,7 @@ int oktagon_esp_detect(struct scsi_host_template *tpnt)
 		eregs = (struct ESP_regs *)(address + OKTAGON_ESP_ADDR);
 
 		/* This line was 5 lines lower */
-		esp = esp_allocate(tpnt, (void *)board+OKTAGON_ESP_ADDR);
+		esp = esp_allocate(tpnt, (void *)board + OKTAGON_ESP_ADDR, 0);
 
 		/* we have to shift the registers only one bit for oktagon */
 		esp->shift = 1;
diff --git a/drivers/scsi/sun3x_esp.c b/drivers/scsi/sun3x_esp.c
index 6b60536ac92b..80fb3f88af2e 100644
--- a/drivers/scsi/sun3x_esp.c
+++ b/drivers/scsi/sun3x_esp.c
@@ -53,7 +53,7 @@ int sun3x_esp_detect(struct scsi_host_template *tpnt)
 	struct ConfigDev *esp_dev;
 
 	esp_dev = 0;
-	esp = esp_allocate(tpnt, (void *) esp_dev);
+	esp = esp_allocate(tpnt, esp_dev, 0);
 
 	/* Do command transfer with DMA */
 	esp->do_pio_cmds = 0;
diff --git a/drivers/tc/Makefile b/drivers/tc/Makefile
index 83b5bd75ce26..967342692211 100644
--- a/drivers/tc/Makefile
+++ b/drivers/tc/Makefile
@@ -4,7 +4,7 @@
 
 # Object file lists.
 
-obj-$(CONFIG_TC) += tc.o
+obj-$(CONFIG_TC) += tc.o tc-driver.o
 obj-$(CONFIG_ZS) += zs.o
 obj-$(CONFIG_VT) += lk201.o lk201-map.o lk201-remap.o
 
diff --git a/drivers/tc/tc-driver.c b/drivers/tc/tc-driver.c
new file mode 100644
index 000000000000..16b5bae63c74
--- /dev/null
+++ b/drivers/tc/tc-driver.c
@@ -0,0 +1,110 @@
+/*
+ *	TURBOchannel driver services.
+ *
+ *	Copyright (c) 2005  James Simmons
+ *	Copyright (c) 2006  Maciej W. Rozycki
+ *
+ *	Loosely based on drivers/dio/dio-driver.c and
+ *	drivers/pci/pci-driver.c.
+ *
+ *	This file is subject to the terms and conditions of the GNU
+ *	General Public License.  See the file "COPYING" in the main
+ *	directory of this archive for more details.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/tc.h>
+
+/**
+ * tc_register_driver - register a new TC driver
+ * @drv: the driver structure to register
+ *
+ * Adds the driver structure to the list of registered drivers
+ * Returns a negative value on error, otherwise 0.
+ * If no error occurred, the driver remains registered even if
+ * no device was claimed during registration.
+ */
+int tc_register_driver(struct tc_driver *tdrv)
+{
+	return driver_register(&tdrv->driver);
+}
+EXPORT_SYMBOL(tc_register_driver);
+
+/**
+ * tc_unregister_driver - unregister a TC driver
+ * @drv: the driver structure to unregister
+ *
+ * Deletes the driver structure from the list of registered TC drivers,
+ * gives it a chance to clean up by calling its remove() function for
+ * each device it was responsible for, and marks those devices as
+ * driverless.
+ */
+void tc_unregister_driver(struct tc_driver *tdrv)
+{
+	driver_unregister(&tdrv->driver);
+}
+EXPORT_SYMBOL(tc_unregister_driver);
+
+/**
+ * tc_match_device - tell if a TC device structure has a matching
+ *                   TC device ID structure
+ * @tdrv: the TC driver to earch for matching TC device ID strings
+ * @tdev: the TC device structure to match against
+ *
+ * Used by a driver to check whether a TC device present in the
+ * system is in its list of supported devices.  Returns the matching
+ * tc_device_id structure or %NULL if there is no match.
+ */
+const struct tc_device_id *tc_match_device(struct tc_driver *tdrv,
+					   struct tc_dev *tdev)
+{
+	const struct tc_device_id *id = tdrv->id_table;
+
+	if (id) {
+		while (id->name[0] || id->vendor[0]) {
+			if (strcmp(tdev->name, id->name) == 0 &&
+			    strcmp(tdev->vendor, id->vendor) == 0)
+				return id;
+			id++;
+		}
+	}
+	return NULL;
+}
+EXPORT_SYMBOL(tc_match_device);
+
+/**
+ * tc_bus_match - Tell if a device structure has a matching
+ *                TC device ID structure
+ * @dev: the device structure to match against
+ * @drv: the device driver to search for matching TC device ID strings
+ *
+ * Used by a driver to check whether a TC device present in the
+ * system is in its list of supported devices.  Returns 1 if there
+ * is a match or 0 otherwise.
+ */
+static int tc_bus_match(struct device *dev, struct device_driver *drv)
+{
+	struct tc_dev *tdev = to_tc_dev(dev);
+	struct tc_driver *tdrv = to_tc_driver(drv);
+	const struct tc_device_id *id;
+
+	id = tc_match_device(tdrv, tdev);
+	if (id)
+		return 1;
+
+	return 0;
+}
+
+struct bus_type tc_bus_type = {
+	.name	= "tc",
+	.match	= tc_bus_match,
+};
+EXPORT_SYMBOL(tc_bus_type);
+
+static int __init tc_driver_init(void)
+{
+	return bus_register(&tc_bus_type);
+}
+
+postcore_initcall(tc_driver_init);
diff --git a/drivers/tc/tc.c b/drivers/tc/tc.c
index 4a51e56f85b6..f77f62a4b325 100644
--- a/drivers/tc/tc.c
+++ b/drivers/tc/tc.c
@@ -1,254 +1,193 @@
 /*
- * tc-init: We assume the TURBOchannel to be up and running so
- * just probe for Modules and fill in the global data structure
- * tc_bus.
+ *	TURBOchannel bus services.
  *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
+ *	Copyright (c) Harald Koerfgen, 1998
+ *	Copyright (c) 2001, 2003, 2005, 2006  Maciej W. Rozycki
+ *	Copyright (c) 2005  James Simmons
  *
- * Copyright (c) Harald Koerfgen, 1998
- * Copyright (c) 2001, 2003, 2005  Maciej W. Rozycki
+ *	This file is subject to the terms and conditions of the GNU
+ *	General Public License.  See the file "COPYING" in the main
+ *	directory of this archive for more details.
  */
+#include <linux/compiler.h>
+#include <linux/errno.h>
 #include <linux/init.h>
+#include <linux/ioport.h>
 #include <linux/kernel.h>
+#include <linux/list.h>
 #include <linux/module.h>
 #include <linux/string.h>
+#include <linux/tc.h>
 #include <linux/types.h>
 
-#include <asm/addrspace.h>
-#include <asm/errno.h>
 #include <asm/io.h>
-#include <asm/paccess.h>
 
-#include <asm/dec/machtype.h>
-#include <asm/dec/prom.h>
-#include <asm/dec/tcinfo.h>
-#include <asm/dec/tcmodule.h>
-#include <asm/dec/interrupts.h>
-
-MODULE_LICENSE("GPL");
-slot_info tc_bus[MAX_SLOT];
-static int num_tcslots;
-static tcinfo *info;
+static struct tc_bus tc_bus = {
+	.name = "TURBOchannel",
+};
 
 /*
- * Interface to the world. Read comment in include/asm-mips/tc.h.
+ * Probing for TURBOchannel modules.
  */
-
-int search_tc_card(const char *name)
-{
-	int slot;
-	slot_info *sip;
-
-	for (slot = 0; slot < num_tcslots; slot++) {
-		sip = &tc_bus[slot];
-		if ((sip->flags & FREE) &&
-		    (strncmp(sip->name, name, strlen(name)) == 0)) {
-			return slot;
-		}
-	}
-
-	return -ENODEV;
-}
-
-void claim_tc_card(int slot)
-{
-	if (tc_bus[slot].flags & IN_USE) {
-		printk("claim_tc_card: attempting to claim a card already in use\n");
-		return;
-	}
-	tc_bus[slot].flags &= ~FREE;
-	tc_bus[slot].flags |= IN_USE;
-}
-
-void release_tc_card(int slot)
+static void __init tc_bus_add_devices(struct tc_bus *tbus)
 {
-	if (tc_bus[slot].flags & FREE) {
-		printk("release_tc_card: "
-		       "attempting to release a card already free\n");
-		return;
-	}
-	tc_bus[slot].flags &= ~IN_USE;
-	tc_bus[slot].flags |= FREE;
-}
-
-unsigned long get_tc_base_addr(int slot)
-{
-	return tc_bus[slot].base_addr;
-}
-
-unsigned long get_tc_irq_nr(int slot)
-{
-	return tc_bus[slot].interrupt;
-}
-
-unsigned long get_tc_speed(void)
-{
-	return 100000 * (10000 / (unsigned long)info->clk_period);
-}
-
-/*
- * Probing for TURBOchannel modules
- */
-static void __init tc_probe(unsigned long startaddr, unsigned long size,
-			    int slots)
-{
-	unsigned long slotaddr;
+	resource_size_t slotsize = tbus->info.slot_size << 20;
+	resource_size_t extslotsize = tbus->ext_slot_size;
+	resource_size_t slotaddr;
+	resource_size_t extslotaddr;
+	resource_size_t devsize;
+	void __iomem *module;
+	struct tc_dev *tdev;
 	int i, slot, err;
-	long offset;
 	u8 pattern[4];
-	volatile u8 *module;
+	long offset;
 
-	for (slot = 0; slot < slots; slot++) {
-		slotaddr = startaddr + slot * size;
-		module = ioremap_nocache(slotaddr, size);
+	for (slot = 0; slot < tbus->num_tcslots; slot++) {
+		slotaddr = tbus->slot_base + slot * slotsize;
+		extslotaddr = tbus->ext_slot_base + slot * extslotsize;
+		module = ioremap_nocache(slotaddr, slotsize);
 		BUG_ON(!module);
 
-		offset = OLDCARD;
+		offset = TC_OLDCARD;
 
 		err = 0;
-		err |= get_dbe(pattern[0], module + OLDCARD + TC_PATTERN0);
-		err |= get_dbe(pattern[1], module + OLDCARD + TC_PATTERN1);
-		err |= get_dbe(pattern[2], module + OLDCARD + TC_PATTERN2);
-		err |= get_dbe(pattern[3], module + OLDCARD + TC_PATTERN3);
-		if (err) {
-			iounmap(module);
-			continue;
-		}
+		err |= tc_preadb(pattern + 0, module + offset + TC_PATTERN0);
+		err |= tc_preadb(pattern + 1, module + offset + TC_PATTERN1);
+		err |= tc_preadb(pattern + 2, module + offset + TC_PATTERN2);
+		err |= tc_preadb(pattern + 3, module + offset + TC_PATTERN3);
+		if (err)
+			goto out_err;
 
 		if (pattern[0] != 0x55 || pattern[1] != 0x00 ||
 		    pattern[2] != 0xaa || pattern[3] != 0xff) {
-			offset = NEWCARD;
+			offset = TC_NEWCARD;
 
 			err = 0;
-			err |= get_dbe(pattern[0], module + TC_PATTERN0);
-			err |= get_dbe(pattern[1], module + TC_PATTERN1);
-			err |= get_dbe(pattern[2], module + TC_PATTERN2);
-			err |= get_dbe(pattern[3], module + TC_PATTERN3);
-			if (err) {
-				iounmap(module);
-				continue;
-			}
+			err |= tc_preadb(pattern + 0,
+					 module + offset + TC_PATTERN0);
+			err |= tc_preadb(pattern + 1,
+					 module + offset + TC_PATTERN1);
+			err |= tc_preadb(pattern + 2,
+					 module + offset + TC_PATTERN2);
+			err |= tc_preadb(pattern + 3,
+					 module + offset + TC_PATTERN3);
+			if (err)
+				goto out_err;
 		}
 
 		if (pattern[0] != 0x55 || pattern[1] != 0x00 ||
-		    pattern[2] != 0xaa || pattern[3] != 0xff) {
-			iounmap(module);
-			continue;
+		    pattern[2] != 0xaa || pattern[3] != 0xff)
+			goto out_err;
+
+		/* Found a board, allocate it an entry in the list */
+		tdev = kzalloc(sizeof(*tdev), GFP_KERNEL);
+		if (!tdev) {
+			printk(KERN_ERR "tc%x: unable to allocate tc_dev\n",
+			       slot);
+			goto out_err;
 		}
+		sprintf(tdev->dev.bus_id, "tc%x", slot);
+		tdev->bus = tbus;
+		tdev->dev.parent = &tbus->dev;
+		tdev->dev.bus = &tc_bus_type;
+		tdev->slot = slot;
 
-		tc_bus[slot].base_addr = slotaddr;
 		for (i = 0; i < 8; i++) {
-			tc_bus[slot].firmware[i] =
-				module[TC_FIRM_VER + offset + 4 * i];
-			tc_bus[slot].vendor[i] =
-				module[TC_VENDOR + offset + 4 * i];
-			tc_bus[slot].name[i] =
-				module[TC_MODULE + offset + 4 * i];
+			tdev->firmware[i] =
+				readb(module + offset + TC_FIRM_VER + 4 * i);
+			tdev->vendor[i] =
+				readb(module + offset + TC_VENDOR + 4 * i);
+			tdev->name[i] =
+				readb(module + offset + TC_MODULE + 4 * i);
 		}
-		tc_bus[slot].firmware[8] = 0;
-		tc_bus[slot].vendor[8] = 0;
-		tc_bus[slot].name[8] = 0;
-		/*
-		 * Looks unneccesary, but we may change
-		 * TC? in the future
-		 */
-		switch (slot) {
-		case 0:
-			tc_bus[slot].interrupt = dec_interrupt[DEC_IRQ_TC0];
-			break;
-		case 1:
-			tc_bus[slot].interrupt = dec_interrupt[DEC_IRQ_TC1];
-			break;
-		case 2:
-			tc_bus[slot].interrupt = dec_interrupt[DEC_IRQ_TC2];
-			break;
-		/*
-		 * Yuck! DS5000/200 onboard devices
-		 */
-		case 5:
-			tc_bus[slot].interrupt = dec_interrupt[DEC_IRQ_TC5];
-			break;
-		case 6:
-			tc_bus[slot].interrupt = dec_interrupt[DEC_IRQ_TC6];
-			break;
-		default:
-			tc_bus[slot].interrupt = -1;
-			break;
+		tdev->firmware[8] = 0;
+		tdev->vendor[8] = 0;
+		tdev->name[8] = 0;
+
+		pr_info("%s: %s %s %s\n", tdev->dev.bus_id, tdev->vendor,
+			tdev->name, tdev->firmware);
+
+		devsize = readb(module + offset + TC_SLOT_SIZE);
+		devsize <<= 22;
+		if (devsize <= slotsize) {
+			tdev->resource.start = slotaddr;
+			tdev->resource.end = slotaddr + devsize - 1;
+		} else if (devsize <= extslotsize) {
+			tdev->resource.start = extslotaddr;
+			tdev->resource.end = extslotaddr + devsize - 1;
+		} else {
+			printk(KERN_ERR "%s: Cannot provide slot space "
+			       "(%dMiB required, up to %dMiB supported)\n",
+			       tdev->dev.bus_id, devsize >> 20,
+			       max(slotsize, extslotsize) >> 20);
+			kfree(tdev);
+			goto out_err;
 		}
+		tdev->resource.name = tdev->name;
+		tdev->resource.flags = IORESOURCE_MEM;
+
+		tc_device_get_irq(tdev);
 
+		device_register(&tdev->dev);
+		list_add_tail(&tdev->node, &tbus->devices);
+
+out_err:
 		iounmap(module);
 	}
 }
 
 /*
- * the main entry
+ * The main entry.
  */
 static int __init tc_init(void)
 {
-	int tc_clock;
-	int i;
-	unsigned long slot0addr;
-	unsigned long slot_size;
-
-	if (!TURBOCHANNEL)
+	/* Initialize the TURBOchannel bus */
+	if (tc_bus_get_info(&tc_bus))
 		return 0;
 
-	for (i = 0; i < MAX_SLOT; i++) {
-		tc_bus[i].base_addr = 0;
-		tc_bus[i].name[0] = 0;
-		tc_bus[i].vendor[0] = 0;
-		tc_bus[i].firmware[0] = 0;
-		tc_bus[i].interrupt = -1;
-		tc_bus[i].flags = FREE;
-	}
-
-	info = rex_gettcinfo();
-	slot0addr = CPHYSADDR((long)rex_slot_address(0));
-
-	switch (mips_machtype) {
-	case MACH_DS5000_200:
-		num_tcslots = 7;
-		break;
-	case MACH_DS5000_1XX:
-	case MACH_DS5000_2X0:
-	case MACH_DS5900:
-		num_tcslots = 3;
-		break;
-	case MACH_DS5000_XX:
-	default:
-		num_tcslots = 2;
-		break;
-	}
-
-	tc_clock = 10000 / info->clk_period;
-
-	if (info->slot_size && slot0addr) {
-		pr_info("TURBOchannel rev. %d at %d.%d MHz (with%s parity)\n",
-			info->revision, tc_clock / 10, tc_clock % 10,
-			info->parity ? "" : "out");
-
-		slot_size = info->slot_size << 20;
-
-		tc_probe(slot0addr, slot_size, num_tcslots);
-
-		for (i = 0; i < num_tcslots; i++) {
-			if (!tc_bus[i].base_addr)
-				continue;
-			pr_info("    slot %d: %s %s %s\n", i, tc_bus[i].vendor,
-				tc_bus[i].name, tc_bus[i].firmware);
+	INIT_LIST_HEAD(&tc_bus.devices);
+	strcpy(tc_bus.dev.bus_id, "tc");
+	device_register(&tc_bus.dev);
+
+	if (tc_bus.info.slot_size) {
+		unsigned int tc_clock = tc_get_speed(&tc_bus) / 100000;
+
+		pr_info("tc: TURBOchannel rev. %d at %d.%d MHz "
+			"(with%s parity)\n", tc_bus.info.revision,
+			tc_clock / 10, tc_clock % 10,
+			tc_bus.info.parity ? "" : "out");
+
+		tc_bus.resource[0].start = tc_bus.slot_base;
+		tc_bus.resource[0].end = tc_bus.slot_base +
+					 (tc_bus.info.slot_size << 20) *
+					 tc_bus.num_tcslots - 1;
+		tc_bus.resource[0].name = tc_bus.name;
+		tc_bus.resource[0].flags = IORESOURCE_MEM;
+		if (request_resource(&iomem_resource,
+				     &tc_bus.resource[0]) < 0) {
+			printk(KERN_ERR "tc: Cannot reserve resource\n");
+			return 0;
+		}
+		if (tc_bus.ext_slot_size) {
+			tc_bus.resource[1].start = tc_bus.ext_slot_base;
+			tc_bus.resource[1].end = tc_bus.ext_slot_base +
+						 tc_bus.ext_slot_size *
+						 tc_bus.num_tcslots - 1;
+			tc_bus.resource[1].name = tc_bus.name;
+			tc_bus.resource[1].flags = IORESOURCE_MEM;
+			if (request_resource(&iomem_resource,
+					     &tc_bus.resource[1]) < 0) {
+				printk(KERN_ERR
+				       "tc: Cannot reserve resource\n");
+				release_resource(&tc_bus.resource[0]);
+				return 0;
+			}
 		}
+
+		tc_bus_add_devices(&tc_bus);
 	}
 
 	return 0;
 }
 
 subsys_initcall(tc_init);
-
-EXPORT_SYMBOL(search_tc_card);
-EXPORT_SYMBOL(claim_tc_card);
-EXPORT_SYMBOL(release_tc_card);
-EXPORT_SYMBOL(get_tc_base_addr);
-EXPORT_SYMBOL(get_tc_irq_nr);
-EXPORT_SYMBOL(get_tc_speed);
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 4e83f01e894e..45fe65d8d7a0 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -1444,8 +1444,8 @@ config FB_PMAG_AA
 	  used mainly in the MIPS-based DECstation series.
 
 config FB_PMAG_BA
-	bool "PMAG-BA TURBOchannel framebuffer support"
-	depends on (FB = y) && TC
+	tristate "PMAG-BA TURBOchannel framebuffer support"
+	depends on FB && TC
  	select FB_CFB_FILLRECT
  	select FB_CFB_COPYAREA
  	select FB_CFB_IMAGEBLIT
@@ -1454,8 +1454,8 @@ config FB_PMAG_BA
 	  used mainly in the MIPS-based DECstation series.
 
 config FB_PMAGB_B
-	bool "PMAGB-B TURBOchannel framebuffer support"
-	depends on (FB = y) && TC
+	tristate "PMAGB-B TURBOchannel framebuffer support"
+	depends on TC
  	select FB_CFB_FILLRECT
  	select FB_CFB_COPYAREA
  	select FB_CFB_IMAGEBLIT
diff --git a/drivers/video/pmag-ba-fb.c b/drivers/video/pmag-ba-fb.c
index f5361cd8ccce..264d37243fad 100644
--- a/drivers/video/pmag-ba-fb.c
+++ b/drivers/video/pmag-ba-fb.c
@@ -15,7 +15,8 @@
  *	Michael Engel <engel@unix-ag.org>,
  *	Karsten Merker <merker@linuxtag.org> and
  *	Harald Koerfgen.
- *	Copyright (c) 2005  Maciej W. Rozycki
+ *	Copyright (c) 2005, 2006  Maciej W. Rozycki
+ *	Copyright (c) 2005  James Simmons
  *
  *	This file is subject to the terms and conditions of the GNU General
  *	Public License.  See the file COPYING in the main directory of this
@@ -28,26 +29,21 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/tc.h>
 #include <linux/types.h>
 
 #include <asm/io.h>
 #include <asm/system.h>
 
-#include <asm/dec/tc.h>
-
 #include <video/pmag-ba-fb.h>
 
 
 struct pmagbafb_par {
-	struct fb_info *next;
 	volatile void __iomem *mmio;
 	volatile u32 __iomem *dac;
-	int slot;
 };
 
 
-static struct fb_info *root_pmagbafb_dev;
-
 static struct fb_var_screeninfo pmagbafb_defined __initdata = {
 	.xres		= 1024,
 	.yres		= 864,
@@ -145,24 +141,19 @@ static void __init pmagbafb_erase_cursor(struct fb_info *info)
 }
 
 
-static int __init pmagbafb_init_one(int slot)
+static int __init pmagbafb_probe(struct device *dev)
 {
+	struct tc_dev *tdev = to_tc_dev(dev);
+	resource_size_t start, len;
 	struct fb_info *info;
 	struct pmagbafb_par *par;
-	unsigned long base_addr;
 
-	info = framebuffer_alloc(sizeof(struct pmagbafb_par), NULL);
+	info = framebuffer_alloc(sizeof(struct pmagbafb_par), dev);
 	if (!info)
 		return -ENOMEM;
 
 	par = info->par;
-	par->slot = slot;
-	claim_tc_card(par->slot);
-
-	base_addr = get_tc_base_addr(par->slot);
-
-	par->next = root_pmagbafb_dev;
-	root_pmagbafb_dev = info;
+	dev_set_drvdata(dev, info);
 
 	if (fb_alloc_cmap(&info->cmap, 256, 0) < 0)
 		goto err_alloc;
@@ -172,15 +163,21 @@ static int __init pmagbafb_init_one(int slot)
 	info->var = pmagbafb_defined;
 	info->flags = FBINFO_DEFAULT;
 
+	/* Request the I/O MEM resource.  */
+	start = tdev->resource.start;
+	len = tdev->resource.end - start + 1;
+	if (!request_mem_region(start, len, dev->bus_id))
+		goto err_cmap;
+
 	/* MMIO mapping setup.  */
-	info->fix.mmio_start = base_addr;
+	info->fix.mmio_start = start;
 	par->mmio = ioremap_nocache(info->fix.mmio_start, info->fix.mmio_len);
 	if (!par->mmio)
-		goto err_cmap;
+		goto err_resource;
 	par->dac = par->mmio + PMAG_BA_BT459;
 
 	/* Frame buffer mapping setup.  */
-	info->fix.smem_start = base_addr + PMAG_BA_FBMEM;
+	info->fix.smem_start = start + PMAG_BA_FBMEM;
 	info->screen_base = ioremap_nocache(info->fix.smem_start,
 					    info->fix.smem_len);
 	if (!info->screen_base)
@@ -192,8 +189,10 @@ static int __init pmagbafb_init_one(int slot)
 	if (register_framebuffer(info) < 0)
 		goto err_smem_map;
 
-	pr_info("fb%d: %s frame buffer device in slot %d\n",
-		info->node, info->fix.id, par->slot);
+	get_device(dev);
+
+	pr_info("fb%d: %s frame buffer device at %s\n",
+		info->node, info->fix.id, dev->bus_id);
 
 	return 0;
 
@@ -204,54 +203,68 @@ err_smem_map:
 err_mmio_map:
 	iounmap(par->mmio);
 
+err_resource:
+	release_mem_region(start, len);
+
 err_cmap:
 	fb_dealloc_cmap(&info->cmap);
 
 err_alloc:
-	root_pmagbafb_dev = par->next;
-	release_tc_card(par->slot);
 	framebuffer_release(info);
 	return -ENXIO;
 }
 
-static void __exit pmagbafb_exit_one(void)
+static int __exit pmagbafb_remove(struct device *dev)
 {
-	struct fb_info *info = root_pmagbafb_dev;
+	struct tc_dev *tdev = to_tc_dev(dev);
+	struct fb_info *info = dev_get_drvdata(dev);
 	struct pmagbafb_par *par = info->par;
+	resource_size_t start, len;
 
+	put_device(dev);
 	unregister_framebuffer(info);
 	iounmap(info->screen_base);
 	iounmap(par->mmio);
+	start = tdev->resource.start;
+	len = tdev->resource.end - start + 1;
+	release_mem_region(start, len);
 	fb_dealloc_cmap(&info->cmap);
-	root_pmagbafb_dev = par->next;
-	release_tc_card(par->slot);
 	framebuffer_release(info);
+	return 0;
 }
 
 
 /*
- * Initialise the framebuffer.
+ * Initialize the framebuffer.
  */
+static const struct tc_device_id pmagbafb_tc_table[] = {
+	{ "DEC     ", "PMAG-BA " },
+	{ }
+};
+MODULE_DEVICE_TABLE(tc, pmagbafb_tc_table);
+
+static struct tc_driver pmagbafb_driver = {
+	.id_table	= pmagbafb_tc_table,
+	.driver		= {
+		.name	= "pmagbafb",
+		.bus	= &tc_bus_type,
+		.probe	= pmagbafb_probe,
+		.remove	= __exit_p(pmagbafb_remove),
+	},
+};
+
 static int __init pmagbafb_init(void)
 {
-	int count = 0;
-	int slot;
-
+#ifndef MODULE
 	if (fb_get_options("pmagbafb", NULL))
 		return -ENXIO;
-
-	while ((slot = search_tc_card("PMAG-BA")) >= 0) {
-		if (pmagbafb_init_one(slot) < 0)
-			break;
-		count++;
-	}
-	return (count > 0) ? 0 : -ENXIO;
+#endif
+	return tc_register_driver(&pmagbafb_driver);
 }
 
 static void __exit pmagbafb_exit(void)
 {
-	while (root_pmagbafb_dev)
-		pmagbafb_exit_one();
+	tc_unregister_driver(&pmagbafb_driver);
 }
 
 
diff --git a/drivers/video/pmagb-b-fb.c b/drivers/video/pmagb-b-fb.c
index a06a064ad757..7a0ce7d5af6b 100644
--- a/drivers/video/pmagb-b-fb.c
+++ b/drivers/video/pmagb-b-fb.c
@@ -11,7 +11,7 @@
  *	Michael Engel <engel@unix-ag.org>,
  *	Karsten Merker <merker@linuxtag.org> and
  *	Harald Koerfgen.
- *	Copyright (c) 2005  Maciej W. Rozycki
+ *	Copyright (c) 2005, 2006  Maciej W. Rozycki
  *
  *	This file is subject to the terms and conditions of the GNU General
  *	Public License.  See the file COPYING in the main directory of this
@@ -25,18 +25,16 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/tc.h>
 #include <linux/types.h>
 
 #include <asm/io.h>
 #include <asm/system.h>
 
-#include <asm/dec/tc.h>
-
 #include <video/pmagb-b-fb.h>
 
 
 struct pmagbbfb_par {
-	struct fb_info *next;
 	volatile void __iomem *mmio;
 	volatile void __iomem *smem;
 	volatile u32 __iomem *sfb;
@@ -47,8 +45,6 @@ struct pmagbbfb_par {
 };
 
 
-static struct fb_info *root_pmagbbfb_dev;
-
 static struct fb_var_screeninfo pmagbbfb_defined __initdata = {
 	.bits_per_pixel	= 8,
 	.red.length	= 8,
@@ -190,8 +186,9 @@ static void __init pmagbbfb_osc_setup(struct fb_info *info)
 		69197, 66000, 65000, 50350, 36000, 32000, 25175
 	};
 	struct pmagbbfb_par *par = info->par;
+	struct tc_bus *tbus = to_tc_dev(info->device)->bus;
 	u32 count0 = 8, count1 = 8, counttc = 16 * 256 + 8;
-	u32 freq0, freq1, freqtc = get_tc_speed() / 250;
+	u32 freq0, freq1, freqtc = tc_get_speed(tbus) / 250;
 	int i, j;
 
 	gp0_write(par, 0);				/* select Osc0 */
@@ -249,26 +246,21 @@ static void __init pmagbbfb_osc_setup(struct fb_info *info)
 };
 
 
-static int __init pmagbbfb_init_one(int slot)
+static int __init pmagbbfb_probe(struct device *dev)
 {
-	char freq0[12], freq1[12];
+	struct tc_dev *tdev = to_tc_dev(dev);
+	resource_size_t start, len;
 	struct fb_info *info;
 	struct pmagbbfb_par *par;
-	unsigned long base_addr;
+	char freq0[12], freq1[12];
 	u32 vid_base;
 
-	info = framebuffer_alloc(sizeof(struct pmagbbfb_par), NULL);
+	info = framebuffer_alloc(sizeof(struct pmagbbfb_par), dev);
 	if (!info)
 		return -ENOMEM;
 
 	par = info->par;
-	par->slot = slot;
-	claim_tc_card(par->slot);
-
-	base_addr = get_tc_base_addr(par->slot);
-
-	par->next = root_pmagbbfb_dev;
-	root_pmagbbfb_dev = info;
+	dev_set_drvdata(dev, info);
 
 	if (fb_alloc_cmap(&info->cmap, 256, 0) < 0)
 		goto err_alloc;
@@ -278,16 +270,22 @@ static int __init pmagbbfb_init_one(int slot)
 	info->var = pmagbbfb_defined;
 	info->flags = FBINFO_DEFAULT;
 
+	/* Request the I/O MEM resource.  */
+	start = tdev->resource.start;
+	len = tdev->resource.end - start + 1;
+	if (!request_mem_region(start, len, dev->bus_id))
+		goto err_cmap;
+
 	/* MMIO mapping setup.  */
-	info->fix.mmio_start = base_addr;
+	info->fix.mmio_start = start;
 	par->mmio = ioremap_nocache(info->fix.mmio_start, info->fix.mmio_len);
 	if (!par->mmio)
-		goto err_cmap;
+		goto err_resource;
 	par->sfb = par->mmio + PMAGB_B_SFB;
 	par->dac = par->mmio + PMAGB_B_BT459;
 
 	/* Frame buffer mapping setup.  */
-	info->fix.smem_start = base_addr + PMAGB_B_FBMEM;
+	info->fix.smem_start = start + PMAGB_B_FBMEM;
 	par->smem = ioremap_nocache(info->fix.smem_start, info->fix.smem_len);
 	if (!par->smem)
 		goto err_mmio_map;
@@ -302,13 +300,15 @@ static int __init pmagbbfb_init_one(int slot)
 	if (register_framebuffer(info) < 0)
 		goto err_smem_map;
 
+	get_device(dev);
+
 	snprintf(freq0, sizeof(freq0), "%u.%03uMHz",
 		 par->osc0 / 1000, par->osc0 % 1000);
 	snprintf(freq1, sizeof(freq1), "%u.%03uMHz",
 		 par->osc1 / 1000, par->osc1 % 1000);
 
-	pr_info("fb%d: %s frame buffer device in slot %d\n",
-		info->node, info->fix.id, par->slot);
+	pr_info("fb%d: %s frame buffer device at %s\n",
+		info->node, info->fix.id, dev->bus_id);
 	pr_info("fb%d: Osc0: %s, Osc1: %s, Osc%u selected\n",
 		info->node, freq0, par->osc1 ? freq1 : "disabled",
 		par->osc1 != 0);
@@ -322,54 +322,68 @@ err_smem_map:
 err_mmio_map:
 	iounmap(par->mmio);
 
+err_resource:
+	release_mem_region(start, len);
+
 err_cmap:
 	fb_dealloc_cmap(&info->cmap);
 
 err_alloc:
-	root_pmagbbfb_dev = par->next;
-	release_tc_card(par->slot);
 	framebuffer_release(info);
 	return -ENXIO;
 }
 
-static void __exit pmagbbfb_exit_one(void)
+static int __exit pmagbbfb_remove(struct device *dev)
 {
-	struct fb_info *info = root_pmagbbfb_dev;
+	struct tc_dev *tdev = to_tc_dev(dev);
+	struct fb_info *info = dev_get_drvdata(dev);
 	struct pmagbbfb_par *par = info->par;
+	resource_size_t start, len;
 
+	put_device(dev);
 	unregister_framebuffer(info);
 	iounmap(par->smem);
 	iounmap(par->mmio);
+	start = tdev->resource.start;
+	len = tdev->resource.end - start + 1;
+	release_mem_region(start, len);
 	fb_dealloc_cmap(&info->cmap);
-	root_pmagbbfb_dev = par->next;
-	release_tc_card(par->slot);
 	framebuffer_release(info);
+	return 0;
 }
 
 
 /*
- * Initialise the framebuffer.
+ * Initialize the framebuffer.
  */
+static const struct tc_device_id pmagbbfb_tc_table[] = {
+	{ "DEC     ", "PMAGB-BA" },
+	{ }
+};
+MODULE_DEVICE_TABLE(tc, pmagbbfb_tc_table);
+
+static struct tc_driver pmagbbfb_driver = {
+	.id_table	= pmagbbfb_tc_table,
+	.driver		= {
+		.name	= "pmagbbfb",
+		.bus	= &tc_bus_type,
+		.probe	= pmagbbfb_probe,
+		.remove	= __exit_p(pmagbbfb_remove),
+	},
+};
+
 static int __init pmagbbfb_init(void)
 {
-	int count = 0;
-	int slot;
-
+#ifndef MODULE
 	if (fb_get_options("pmagbbfb", NULL))
 		return -ENXIO;
-
-	while ((slot = search_tc_card("PMAGB-BA")) >= 0) {
-		if (pmagbbfb_init_one(slot) < 0)
-			break;
-		count++;
-	}
-	return (count > 0) ? 0 : -ENXIO;
+#endif
+	return tc_register_driver(&pmagbbfb_driver);
 }
 
 static void __exit pmagbbfb_exit(void)
 {
-	while (root_pmagbbfb_dev)
-		pmagbbfb_exit_one();
+	tc_unregister_driver(&pmagbbfb_driver);
 }
 
 
diff --git a/include/asm-mips/dec/system.h b/include/asm-mips/dec/system.h
index 78af51fbc797..b2afaccd6831 100644
--- a/include/asm-mips/dec/system.h
+++ b/include/asm-mips/dec/system.h
@@ -3,7 +3,7 @@
  *
  *	Generic DECstation/DECsystem bits.
  *
- *	Copyright (C) 2005  Maciej W. Rozycki
+ *	Copyright (C) 2005, 2006  Maciej W. Rozycki
  *
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU General Public License
@@ -14,5 +14,6 @@
 #define __ASM_DEC_SYSTEM_H
 
 extern unsigned long dec_kn_slot_base, dec_kn_slot_size;
+extern int dec_tc_bus;
 
 #endif /* __ASM_DEC_SYSTEM_H */
diff --git a/include/asm-mips/dec/tc.h b/include/asm-mips/dec/tc.h
deleted file mode 100644
index 9cb51f24d42c..000000000000
--- a/include/asm-mips/dec/tc.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * Interface to the TURBOchannel related routines
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (c) 1998 Harald Koerfgen
- */
-#ifndef __ASM_DEC_TC_H
-#define __ASM_DEC_TC_H
-
-/*
- * Search for a TURBOchannel Option Module
- * with a certain name. Returns slot number
- * of the first card not in use or -ENODEV
- * if none found.
- */
-extern int search_tc_card(const char *);
-/*
- * Marks the card in slot as used
- */
-extern void claim_tc_card(int);
-/*
- * Marks the card in slot as free
- */
-extern void release_tc_card(int);
-/*
- * Return base address of card in slot
- */
-extern unsigned long get_tc_base_addr(int);
-/*
- * Return interrupt number of slot
- */
-extern unsigned long get_tc_irq_nr(int);
-/*
- * Return TURBOchannel clock frequency in Hz
- */
-extern unsigned long get_tc_speed(void);
-
-#endif /* __ASM_DEC_TC_H */
diff --git a/include/asm-mips/dec/tcinfo.h b/include/asm-mips/dec/tcinfo.h
deleted file mode 100644
index cc23509ee77a..000000000000
--- a/include/asm-mips/dec/tcinfo.h
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * Various TURBOchannel related stuff
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Information obtained through the get_tcinfo prom call
- * created from:
- *
- * TURBOchannel Firmware Specification
- *
- * EK-TCAAD-FS-004
- * from Digital Equipment Corporation
- *
- * Copyright (c) 1998 Harald Koerfgen
- */
-
-typedef struct {
-	int revision;
-	int clk_period;
-	int slot_size;
-	int io_timeout;
-	int dma_range;
-	int max_dma_burst;
-	int parity;
-	int reserved[4];
-} tcinfo;
-
-#define MAX_SLOT 7
-
-typedef struct {
-	unsigned long base_addr;
-	unsigned char name[9];
-	unsigned char vendor[9];
-	unsigned char firmware[9];
-	int interrupt;
-	int flags;
-} slot_info;
-
-/*
- * Values for flags
- */
-#define FREE 	1<<0
-#define IN_USE	1<<1
-
-
diff --git a/include/asm-mips/dec/tcmodule.h b/include/asm-mips/dec/tcmodule.h
deleted file mode 100644
index 6268e8915d87..000000000000
--- a/include/asm-mips/dec/tcmodule.h
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Offsets for the ROM header locations for
- * TURBOchannel cards
- *
- * created from:
- *
- * TURBOchannel Firmware Specification
- *
- * EK-TCAAD-FS-004
- * from Digital Equipment Corporation
- *
- * Jan.1998 Harald Koerfgen
- */
-#ifndef __ASM_DEC_TCMODULE_H
-#define __ASM_DEC_TCMODULE_H
-
-#define OLDCARD 0x3c0000
-#define NEWCARD 0x000000
-
-#define TC_ROM_WIDTH	0x3e0
-#define TC_ROM_STRIDE	0x3e4
-#define TC_ROM_SIZE	0x3e8
-#define TC_SLOT_SIZE	0x3ec
-#define TC_PATTERN0	0x3f0
-#define TC_PATTERN1	0x3f4
-#define TC_PATTERN2	0x3f8
-#define TC_PATTERN3	0x3fc
-#define TC_FIRM_VER	0x400
-#define TC_VENDOR	0x420
-#define TC_MODULE	0x440
-#define TC_FIRM_TYPE	0x460
-#define TC_FLAGS	0x470
-#define TC_ROM_OBJECTS	0x480
-
-#endif /* __ASM_DEC_TCMODULE_H */
diff --git a/include/linux/eisa.h b/include/linux/eisa.h
index 1ff7c1392525..fe806b6f030d 100644
--- a/include/linux/eisa.h
+++ b/include/linux/eisa.h
@@ -61,10 +61,20 @@ struct eisa_driver {
 
 #define to_eisa_driver(drv) container_of(drv,struct eisa_driver, driver)
 
+/* These external functions are only available when EISA support is enabled. */
+#ifdef CONFIG_EISA
+
 extern struct bus_type eisa_bus_type;
 int eisa_driver_register (struct eisa_driver *edrv);
 void eisa_driver_unregister (struct eisa_driver *edrv);
 
+#else /* !CONFIG_EISA */
+
+static inline int eisa_driver_register (struct eisa_driver *edrv) { return 0; }
+static inline void eisa_driver_unregister (struct eisa_driver *edrv) { }
+
+#endif /* !CONFIG_EISA */
+
 /* Mimics pci.h... */
 static inline void *eisa_get_drvdata (struct eisa_device *edev)
 {
diff --git a/include/linux/tc.h b/include/linux/tc.h
new file mode 100644
index 000000000000..f92511e57cdb
--- /dev/null
+++ b/include/linux/tc.h
@@ -0,0 +1,141 @@
+/*
+ *	Interface to the TURBOchannel related routines.
+ *
+ *	Copyright (c) 1998  Harald Koerfgen
+ *	Copyright (c) 2005  James Simmons
+ *	Copyright (c) 2006  Maciej W. Rozycki
+ *
+ *	Based on:
+ *
+ *	"TURBOchannel Firmware Specification", EK-TCAAD-FS-004
+ *
+ *	from Digital Equipment Corporation.
+ *
+ *	This file is subject to the terms and conditions of the GNU
+ *	General Public License.  See the file "COPYING" in the main
+ *	directory of this archive for more details.
+ */
+#ifndef _LINUX_TC_H
+#define _LINUX_TC_H
+
+#include <linux/compiler.h>
+#include <linux/device.h>
+#include <linux/ioport.h>
+#include <linux/types.h>
+
+/*
+ * Offsets for the ROM header locations for TURBOchannel cards.
+ */
+#define TC_OLDCARD	0x3c0000
+#define TC_NEWCARD	0x000000
+
+#define TC_ROM_WIDTH	0x3e0
+#define TC_ROM_STRIDE	0x3e4
+#define TC_ROM_SIZE	0x3e8
+#define TC_SLOT_SIZE	0x3ec
+#define TC_PATTERN0	0x3f0
+#define TC_PATTERN1	0x3f4
+#define TC_PATTERN2	0x3f8
+#define TC_PATTERN3	0x3fc
+#define TC_FIRM_VER	0x400
+#define TC_VENDOR	0x420
+#define TC_MODULE	0x440
+#define TC_FIRM_TYPE	0x460
+#define TC_FLAGS	0x470
+#define TC_ROM_OBJECTS	0x480
+
+/*
+ * Information obtained through the get_tcinfo() PROM call.
+ */
+struct tcinfo {
+	s32		revision;	/* Hardware revision level. */
+	s32		clk_period;	/* Clock period in nanoseconds. */
+	s32		slot_size;	/* Slot size in megabytes. */
+	s32		io_timeout;	/* I/O timeout in cycles. */
+	s32		dma_range;	/* DMA address range in megabytes. */
+	s32		max_dma_burst;	/* Maximum DMA burst length. */
+	s32		parity;		/* System module supports TC parity. */
+	s32		reserved[4];
+};
+
+/*
+ * TURBOchannel bus.
+ */
+struct tc_bus {
+	struct list_head devices;	/* List of devices on this bus. */
+	struct resource	resource[2];	/* Address space routed to this bus. */
+
+	struct device	dev;
+	char		name[13];
+	resource_size_t	slot_base;
+	resource_size_t	ext_slot_base;
+	resource_size_t	ext_slot_size;
+	int		num_tcslots;
+	struct tcinfo	info;
+};
+
+/*
+ * TURBOchannel device.
+ */
+struct tc_dev {
+	struct list_head node;		/* Node in list of all TC devices. */
+	struct tc_bus	*bus;		/* Bus this device is on. */
+	struct tc_driver *driver;	/* Which driver has allocated this
+					   device. */
+	struct device	dev;		/* Generic device interface. */
+	struct resource	resource;	/* Address space of this device. */
+	char		vendor[9];
+	char		name[9];
+	char		firmware[9];
+	int		interrupt;
+	int		slot;
+};
+
+#define to_tc_dev(n) container_of(n, struct tc_dev, dev)
+
+struct tc_device_id {
+	char		vendor[9];
+	char		name[9];
+};
+
+/*
+ * TURBOchannel driver.
+ */
+struct tc_driver {
+	struct list_head node;
+	const struct tc_device_id *id_table;
+	struct device_driver driver;
+};
+
+#define to_tc_driver(drv) container_of(drv, struct tc_driver, driver)
+
+/*
+ * Return TURBOchannel clock frequency in Hz.
+ */
+static inline unsigned long tc_get_speed(struct tc_bus *tbus)
+{
+	return 100000 * (10000 / (unsigned long)tbus->info.clk_period);
+}
+
+#ifdef CONFIG_TC
+
+extern struct bus_type tc_bus_type;
+
+extern int tc_register_driver(struct tc_driver *tdrv);
+extern void tc_unregister_driver(struct tc_driver *tdrv);
+
+#else /* !CONFIG_TC */
+
+static inline int tc_register_driver(struct tc_driver *tdrv) { return 0; }
+static inline void tc_unregister_driver(struct tc_driver *tdrv) { }
+
+#endif /* CONFIG_TC */
+
+/*
+ * These have to be provided by the architecture.
+ */
+extern int tc_preadb(u8 *valp, void __iomem *addr);
+extern int tc_bus_get_info(struct tc_bus *tbus);
+extern void tc_device_get_irq(struct tc_dev *tdev);
+
+#endif /* _LINUX_TC_H */