[MIPS] TXx9: Reorganize PCI code

Split out PCIC dependent code and SoC dependent code from board dependent
code.  Now TX4927 PCIC code is independent from TX4927/TX4938 SoC code.
Also fix some build problems on CONFIG_PCI=n.

As a bonus, "FPCIB0 Backplane Support" is available for all TX39/TX49 boards
and PCI66 support is available for all TX49 boards.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

9 files changed, 689 insertions, 1048 deletions

diff --git a/arch/mips/txx9/Kconfig b/arch/mips/txx9/Kconfig
index 98d103402b10..b8cdb192543a 100644
--- a/arch/mips/txx9/Kconfig
+++ b/arch/mips/txx9/Kconfig
@@ -1,6 +1,12 @@
 config TOSHIBA_FPCIB0
 	bool "FPCIB0 Backplane Support"
-	depends on TOSHIBA_RBTX4927
+	depends on PCI && (SYS_HAS_CPU_TX49XX || SYS_HAS_CPU_TX39XX)
+	select I8259
+
+config PICMG_PCI_BACKPLANE_DEFAULT
+	bool "Support for PICMG PCI Backplane"
+	depends on PCI && (SYS_HAS_CPU_TX49XX || SYS_HAS_CPU_TX39XX)
+	default y if !TOSHIBA_FPCIB0
 
 if TOSHIBA_RBTX4938
 
@@ -26,3 +32,6 @@ config TX4938_NAND_BOOT
 	  Select this option if you need to use NAND boot.
 
 endif
+
+config PCI_TX4927
+	bool
diff --git a/arch/mips/txx9/generic/Makefile b/arch/mips/txx9/generic/Makefile
index 8cb4a7e81473..b80b6e072284 100644
--- a/arch/mips/txx9/generic/Makefile
+++ b/arch/mips/txx9/generic/Makefile
@@ -2,6 +2,8 @@
 # Makefile for common code for TXx9 based systems
 #
 
+obj-y	+= setup.o
+obj-$(CONFIG_PCI)	+= pci.o
 obj-$(CONFIG_TOSHIBA_RBTX4927)	+= mem_tx4927.o irq_tx4927.o
 obj-$(CONFIG_TOSHIBA_RBTX4938)	+= mem_tx4938.o irq_tx4938.o
 obj-$(CONFIG_TOSHIBA_FPCIB0)	+= smsc_fdc37m81x.o
diff --git a/arch/mips/txx9/generic/pci.c b/arch/mips/txx9/generic/pci.c
new file mode 100644
index 000000000000..8173faab99bb
--- /dev/null
+++ b/arch/mips/txx9/generic/pci.c
@@ -0,0 +1,377 @@
+/*
+ * linux/arch/mips/txx9/pci.c
+ *
+ * Based on linux/arch/mips/txx9/rbtx4927/setup.c,
+ *          linux/arch/mips/txx9/rbtx4938/setup.c,
+ *	    and RBTX49xx patch from CELF patch archive.
+ *
+ * Copyright 2001-2005 MontaVista Software Inc.
+ * Copyright (C) 1996, 97, 2001, 04  Ralf Baechle (ralf@linux-mips.org)
+ * (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007
+ *
+ * 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/delay.h>
+#include <linux/jiffies.h>
+#include <linux/io.h>
+#include <asm/txx9/pci.h>
+#ifdef CONFIG_TOSHIBA_FPCIB0
+#include <linux/interrupt.h>
+#include <asm/i8259.h>
+#include <asm/txx9/smsc_fdc37m81x.h>
+#endif
+
+static int __init
+early_read_config_word(struct pci_controller *hose,
+		       int top_bus, int bus, int devfn, int offset, u16 *value)
+{
+	struct pci_dev fake_dev;
+	struct pci_bus fake_bus;
+
+	fake_dev.bus = &fake_bus;
+	fake_dev.sysdata = hose;
+	fake_dev.devfn = devfn;
+	fake_bus.number = bus;
+	fake_bus.sysdata = hose;
+	fake_bus.ops = hose->pci_ops;
+
+	if (bus != top_bus)
+		/* Fake a parent bus structure. */
+		fake_bus.parent = &fake_bus;
+	else
+		fake_bus.parent = NULL;
+
+	return pci_read_config_word(&fake_dev, offset, value);
+}
+
+int __init txx9_pci66_check(struct pci_controller *hose, int top_bus,
+			    int current_bus)
+{
+	u32 pci_devfn;
+	unsigned short vid;
+	int cap66 = -1;
+	u16 stat;
+
+	/* It seems SLC90E66 needs some time after PCI reset... */
+	mdelay(80);
+
+	printk(KERN_INFO "PCI: Checking 66MHz capabilities...\n");
+
+	for (pci_devfn = 0; pci_devfn < 0xff; pci_devfn++) {
+		if (PCI_FUNC(pci_devfn))
+			continue;
+		if (early_read_config_word(hose, top_bus, current_bus,
+					   pci_devfn, PCI_VENDOR_ID, &vid) !=
+		    PCIBIOS_SUCCESSFUL)
+			continue;
+		if (vid == 0xffff)
+			continue;
+
+		/* check 66MHz capability */
+		if (cap66 < 0)
+			cap66 = 1;
+		if (cap66) {
+			early_read_config_word(hose, top_bus, current_bus,
+					       pci_devfn, PCI_STATUS, &stat);
+			if (!(stat & PCI_STATUS_66MHZ)) {
+				printk(KERN_DEBUG
+				       "PCI: %02x:%02x not 66MHz capable.\n",
+				       current_bus, pci_devfn);
+				cap66 = 0;
+				break;
+			}
+		}
+	}
+	return cap66 > 0;
+}
+
+static struct resource primary_pci_mem_res[2] = {
+	{ .name = "PCI MEM" },
+	{ .name = "PCI MMIO" },
+};
+static struct resource primary_pci_io_res = { .name = "PCI IO" };
+struct pci_controller txx9_primary_pcic = {
+	.mem_resource = &primary_pci_mem_res[0],
+	.io_resource = &primary_pci_io_res,
+};
+
+#ifdef CONFIG_64BIT
+int txx9_pci_mem_high __initdata = 1;
+#else
+int txx9_pci_mem_high __initdata;
+#endif
+
+/*
+ * allocate pci_controller and resources.
+ * mem_base, io_base: physical addresss.  0 for auto assignment.
+ * mem_size and io_size means max size on auto assignment.
+ * pcic must be &txx9_primary_pcic or NULL.
+ */
+struct pci_controller *__init
+txx9_alloc_pci_controller(struct pci_controller *pcic,
+			  unsigned long mem_base, unsigned long mem_size,
+			  unsigned long io_base, unsigned long io_size)
+{
+	struct pcic {
+		struct pci_controller c;
+		struct resource r_mem[2];
+		struct resource r_io;
+	} *new = NULL;
+	int min_size = 0x10000;
+
+	if (!pcic) {
+		new = kzalloc(sizeof(*new), GFP_KERNEL);
+		if (!new)
+			return NULL;
+		new->r_mem[0].name = "PCI mem";
+		new->r_mem[1].name = "PCI mmio";
+		new->r_io.name = "PCI io";
+		new->c.mem_resource = new->r_mem;
+		new->c.io_resource = &new->r_io;
+		pcic = &new->c;
+	} else
+		BUG_ON(pcic != &txx9_primary_pcic);
+	pcic->io_resource->flags = IORESOURCE_IO;
+
+	/*
+	 * for auto assignment, first search a (big) region for PCI
+	 * MEM, then search a region for PCI IO.
+	 */
+	if (mem_base) {
+		pcic->mem_resource[0].start = mem_base;
+		pcic->mem_resource[0].end = mem_base + mem_size - 1;
+		if (request_resource(&iomem_resource, &pcic->mem_resource[0]))
+			goto free_and_exit;
+	} else {
+		unsigned long min = 0, max = 0x20000000; /* low 512MB */
+		if (!mem_size) {
+			/* default size for auto assignment */
+			if (txx9_pci_mem_high)
+				mem_size = 0x20000000;	/* mem:512M(max) */
+			else
+				mem_size = 0x08000000;	/* mem:128M(max) */
+		}
+		if (txx9_pci_mem_high) {
+			min = 0x20000000;
+			max = 0xe0000000;
+		}
+		/* search free region for PCI MEM */
+		for (; mem_size >= min_size; mem_size /= 2) {
+			if (allocate_resource(&iomem_resource,
+					      &pcic->mem_resource[0],
+					      mem_size, min, max,
+					      mem_size, NULL, NULL) == 0)
+				break;
+		}
+		if (mem_size < min_size)
+			goto free_and_exit;
+	}
+
+	pcic->mem_resource[1].flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+	if (io_base) {
+		pcic->mem_resource[1].start = io_base;
+		pcic->mem_resource[1].end = io_base + io_size - 1;
+		if (request_resource(&iomem_resource, &pcic->mem_resource[1]))
+			goto release_and_exit;
+	} else {
+		if (!io_size)
+			/* default size for auto assignment */
+			io_size = 0x01000000;	/* io:16M(max) */
+		/* search free region for PCI IO in low 512MB */
+		for (; io_size >= min_size; io_size /= 2) {
+			if (allocate_resource(&iomem_resource,
+					      &pcic->mem_resource[1],
+					      io_size, 0, 0x20000000,
+					      io_size, NULL, NULL) == 0)
+				break;
+		}
+		if (io_size < min_size)
+			goto release_and_exit;
+		io_base = pcic->mem_resource[1].start;
+	}
+
+	pcic->mem_resource[0].flags = IORESOURCE_MEM;
+	if (pcic == &txx9_primary_pcic &&
+	    mips_io_port_base == (unsigned long)-1) {
+		/* map ioport 0 to PCI I/O space address 0 */
+		set_io_port_base(IO_BASE + pcic->mem_resource[1].start);
+		pcic->io_resource->start = 0;
+		pcic->io_offset = 0;	/* busaddr == ioaddr */
+		pcic->io_map_base = IO_BASE + pcic->mem_resource[1].start;
+	} else {
+		/* physaddr to ioaddr */
+		pcic->io_resource->start =
+			io_base - (mips_io_port_base - IO_BASE);
+		pcic->io_offset = io_base - (mips_io_port_base - IO_BASE);
+		pcic->io_map_base = mips_io_port_base;
+	}
+	pcic->io_resource->end = pcic->io_resource->start + io_size - 1;
+
+	pcic->mem_offset = 0;	/* busaddr == physaddr */
+
+	printk(KERN_INFO "PCI: IO 0x%08llx-0x%08llx MEM 0x%08llx-0x%08llx\n",
+	       (unsigned long long)pcic->mem_resource[1].start,
+	       (unsigned long long)pcic->mem_resource[1].end,
+	       (unsigned long long)pcic->mem_resource[0].start,
+	       (unsigned long long)pcic->mem_resource[0].end);
+
+	/* register_pci_controller() will request MEM resource */
+	release_resource(&pcic->mem_resource[0]);
+	return pcic;
+ release_and_exit:
+	release_resource(&pcic->mem_resource[0]);
+ free_and_exit:
+	kfree(new);
+	printk(KERN_ERR "PCI: Failed to allocate resources.\n");
+	return NULL;
+}
+
+static int __init
+txx9_arch_pci_init(void)
+{
+	PCIBIOS_MIN_IO = 0x8000;	/* reseve legacy I/O space */
+	return 0;
+}
+arch_initcall(txx9_arch_pci_init);
+
+/* IRQ/IDSEL mapping */
+int txx9_pci_option =
+#ifdef CONFIG_PICMG_PCI_BACKPLANE_DEFAULT
+	TXX9_PCI_OPT_PICMG |
+#endif
+	TXX9_PCI_OPT_CLK_AUTO;
+
+enum txx9_pci_err_action txx9_pci_err_action = TXX9_PCI_ERR_REPORT;
+
+#ifdef CONFIG_TOSHIBA_FPCIB0
+static irqreturn_t i8259_interrupt(int irq, void *dev_id)
+{
+	int isairq;
+
+	isairq = i8259_irq();
+	if (unlikely(isairq <= I8259A_IRQ_BASE))
+		return IRQ_NONE;
+	generic_handle_irq(isairq);
+	return IRQ_HANDLED;
+}
+
+static int __init
+txx9_i8259_irq_setup(int irq)
+{
+	int err;
+
+	init_i8259_irqs();
+	err = request_irq(irq, &i8259_interrupt, IRQF_DISABLED|IRQF_SHARED,
+			  "cascade(i8259)", (void *)(long)irq);
+	if (!err)
+		printk(KERN_INFO "PCI-ISA bridge PIC (irq %d)\n", irq);
+	return err;
+}
+
+static void __init quirk_slc90e66_bridge(struct pci_dev *dev)
+{
+	int irq;	/* PCI/ISA Bridge interrupt */
+	u8 reg_64;
+	u32 reg_b0;
+	u8 reg_e1;
+	irq = pcibios_map_irq(dev, PCI_SLOT(dev->devfn), 1); /* INTA */
+	if (!irq)
+		return;
+	txx9_i8259_irq_setup(irq);
+	pci_read_config_byte(dev, 0x64, &reg_64);
+	pci_read_config_dword(dev, 0xb0, &reg_b0);
+	pci_read_config_byte(dev, 0xe1, &reg_e1);
+	/* serial irq control */
+	reg_64 = 0xd0;
+	/* serial irq pin */
+	reg_b0 |= 0x00010000;
+	/* ide irq on isa14 */
+	reg_e1 &= 0xf0;
+	reg_e1 |= 0x0d;
+	pci_write_config_byte(dev, 0x64, reg_64);
+	pci_write_config_dword(dev, 0xb0, reg_b0);
+	pci_write_config_byte(dev, 0xe1, reg_e1);
+
+	smsc_fdc37m81x_init(0x3f0);
+	smsc_fdc37m81x_config_beg();
+	smsc_fdc37m81x_config_set(SMSC_FDC37M81X_DNUM,
+				  SMSC_FDC37M81X_KBD);
+	smsc_fdc37m81x_config_set(SMSC_FDC37M81X_INT, 1);
+	smsc_fdc37m81x_config_set(SMSC_FDC37M81X_INT2, 12);
+	smsc_fdc37m81x_config_set(SMSC_FDC37M81X_ACTIVE,
+				  1);
+	smsc_fdc37m81x_config_end();
+}
+
+static void quirk_slc90e66_ide(struct pci_dev *dev)
+{
+	unsigned char dat;
+	int regs[2] = {0x41, 0x43};
+	int i;
+
+	/* SMSC SLC90E66 IDE uses irq 14, 15 (default) */
+	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, 14);
+	pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &dat);
+	printk(KERN_INFO "PCI: %s: IRQ %02x", pci_name(dev), dat);
+	/* enable SMSC SLC90E66 IDE */
+	for (i = 0; i < ARRAY_SIZE(regs); i++) {
+		pci_read_config_byte(dev, regs[i], &dat);
+		pci_write_config_byte(dev, regs[i], dat | 0x80);
+		pci_read_config_byte(dev, regs[i], &dat);
+		printk(KERN_CONT " IDETIM%d %02x", i, dat);
+	}
+	pci_read_config_byte(dev, 0x5c, &dat);
+	/*
+	 * !!! DO NOT REMOVE THIS COMMENT IT IS REQUIRED BY SMSC !!!
+	 *
+	 * This line of code is intended to provide the user with a work
+	 * around solution to the anomalies cited in SMSC's anomaly sheet
+	 * entitled, "SLC90E66 Functional Rev.J_0.1 Anomalies"".
+	 *
+	 * !!! DO NOT REMOVE THIS COMMENT IT IS REQUIRED BY SMSC !!!
+	 */
+	dat |= 0x01;
+	pci_write_config_byte(dev, regs[i], dat);
+	pci_read_config_byte(dev, 0x5c, &dat);
+	printk(KERN_CONT " REG5C %02x", dat);
+	printk(KERN_CONT "\n");
+}
+#endif /* CONFIG_TOSHIBA_FPCIB0 */
+
+static void final_fixup(struct pci_dev *dev)
+{
+	unsigned char bist;
+
+	/* Do build-in self test */
+	if (pci_read_config_byte(dev, PCI_BIST, &bist) == PCIBIOS_SUCCESSFUL &&
+	    (bist & PCI_BIST_CAPABLE)) {
+		unsigned long timeout;
+		pci_set_power_state(dev, PCI_D0);
+		printk(KERN_INFO "PCI: %s BIST...", pci_name(dev));
+		pci_write_config_byte(dev, PCI_BIST, PCI_BIST_START);
+		timeout = jiffies + HZ * 2;	/* timeout after 2 sec */
+		do {
+			pci_read_config_byte(dev, PCI_BIST, &bist);
+			if (time_after(jiffies, timeout))
+				break;
+		} while (bist & PCI_BIST_START);
+		if (bist & (PCI_BIST_CODE_MASK | PCI_BIST_START))
+			printk(KERN_CONT "failed. (0x%x)\n", bist);
+		else
+			printk(KERN_CONT "OK.\n");
+	}
+}
+
+#ifdef CONFIG_TOSHIBA_FPCIB0
+#define PCI_DEVICE_ID_EFAR_SLC90E66_0 0x9460
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_EFAR, PCI_DEVICE_ID_EFAR_SLC90E66_0,
+	quirk_slc90e66_bridge);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_EFAR, PCI_DEVICE_ID_EFAR_SLC90E66_1,
+	quirk_slc90e66_ide);
+DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_EFAR, PCI_DEVICE_ID_EFAR_SLC90E66_1,
+	quirk_slc90e66_ide);
+#endif
+DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, final_fixup);
+DECLARE_PCI_FIXUP_RESUME(PCI_ANY_ID, PCI_ANY_ID, final_fixup);
diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c
new file mode 100644
index 000000000000..46a631177757
--- /dev/null
+++ b/arch/mips/txx9/generic/setup.c
@@ -0,0 +1,51 @@
+/*
+ * linux/arch/mips/txx9/generic/setup.c
+ *
+ * Based on linux/arch/mips/txx9/rbtx4938/setup.c,
+ *	    and RBTX49xx patch from CELF patch archive.
+ *
+ * 2003-2005 (c) MontaVista Software, Inc.
+ * (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007
+ *
+ * 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/kernel.h>
+#include <linux/types.h>
+#include <asm/txx9/generic.h>
+
+/* EBUSC settings of TX4927, etc. */
+struct resource txx9_ce_res[8];
+static char txx9_ce_res_name[8][4];	/* "CEn" */
+
+/* pcode, internal register */
+char txx9_pcode_str[8];
+static struct resource txx9_reg_res = {
+	.name = txx9_pcode_str,
+	.flags = IORESOURCE_MEM,
+};
+void __init
+txx9_reg_res_init(unsigned int pcode, unsigned long base, unsigned long size)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(txx9_ce_res); i++) {
+		sprintf(txx9_ce_res_name[i], "CE%d", i);
+		txx9_ce_res[i].flags = IORESOURCE_MEM;
+		txx9_ce_res[i].name = txx9_ce_res_name[i];
+	}
+
+	sprintf(txx9_pcode_str, "TX%x", pcode);
+	if (base) {
+		txx9_reg_res.start = base & 0xfffffffffULL;
+		txx9_reg_res.end = (base & 0xfffffffffULL) + (size - 1);
+		request_resource(&iomem_resource, &txx9_reg_res);
+	}
+}
+
+/* clocks */
+unsigned int txx9_master_clock;
+unsigned int txx9_cpu_clock;
+unsigned int txx9_gbus_clock;
diff --git a/arch/mips/txx9/jmr3927/irq.c b/arch/mips/txx9/jmr3927/irq.c
index 85e1daf15c7b..b97d22e15da6 100644
--- a/arch/mips/txx9/jmr3927/irq.c
+++ b/arch/mips/txx9/jmr3927/irq.c
@@ -109,6 +109,7 @@ static struct irqaction ioc_action = {
 	.name = "IOC",
 };
 
+#ifdef CONFIG_PCI
 static irqreturn_t jmr3927_pcierr_interrupt(int irq, void *dev_id)
 {
 	printk(KERN_WARNING "PCI error interrupt (irq 0x%x).\n", irq);
@@ -122,6 +123,7 @@ static struct irqaction pcierr_action = {
 	.mask = CPU_MASK_NONE,
 	.name = "PCI error",
 };
+#endif
 
 static void __init jmr3927_irq_init(void);
 
diff --git a/arch/mips/txx9/jmr3927/setup.c b/arch/mips/txx9/jmr3927/setup.c
index 41e0f3b3af2c..baa8c8db9a94 100644
--- a/arch/mips/txx9/jmr3927/setup.c
+++ b/arch/mips/txx9/jmr3927/setup.c
@@ -30,7 +30,6 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
-#include <linux/pci.h>
 #include <linux/ioport.h>
 #include <linux/delay.h>
 #include <linux/pm.h>
@@ -44,6 +43,7 @@
 #include <asm/txx9tmr.h>
 #include <asm/txx9pio.h>
 #include <asm/reboot.h>
+#include <asm/txx9/pci.h>
 #include <asm/txx9/jmr3927.h>
 #include <asm/mipsregs.h>
 
@@ -96,8 +96,6 @@ void __init plat_time_init(void)
 
 extern char * __init prom_getcmdline(void);
 static void jmr3927_board_init(void);
-extern struct resource pci_io_resource;
-extern struct resource pci_mem_resource;
 
 void __init plat_mem_setup(void)
 {
@@ -112,8 +110,8 @@ void __init plat_mem_setup(void)
 	/*
 	 * IO/MEM resources.
 	 */
-	ioport_resource.start = pci_io_resource.start;
-	ioport_resource.end = pci_io_resource.end;
+	ioport_resource.start = 0;
+	ioport_resource.end = 0xffffffff;
 	iomem_resource.start = 0;
 	iomem_resource.end = 0xffffffff;
 
@@ -191,9 +189,33 @@ void __init plat_mem_setup(void)
 
 static void tx3927_setup(void);
 
+static void __init jmr3927_pci_setup(void)
+{
+#ifdef CONFIG_PCI
+	int extarb = !(tx3927_ccfgptr->ccfg & TX3927_CCFG_PCIXARB);
+	struct pci_controller *c;
+
+	c = txx9_alloc_pci_controller(&txx9_primary_pcic,
+				      JMR3927_PCIMEM, JMR3927_PCIMEM_SIZE,
+				      JMR3927_PCIIO, JMR3927_PCIIO_SIZE);
+	register_pci_controller(c);
+	if (!extarb) {
+		/* Reset PCI Bus */
+		jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR);
+		udelay(100);
+		jmr3927_ioc_reg_out(JMR3927_IOC_RESET_PCI,
+				    JMR3927_IOC_RESET_ADDR);
+		udelay(100);
+		jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR);
+	}
+	tx3927_pcic_setup(c, JMR3927_SDRAM_SIZE, extarb);
+#endif /* CONFIG_PCI */
+}
+
 static void __init jmr3927_board_init(void)
 {
 	tx3927_setup();
+	jmr3927_pci_setup();
 
 	/* SIO0 DTR on */
 	jmr3927_ioc_reg_out(0, JMR3927_IOC_DTR_ADDR);
@@ -210,14 +232,6 @@ static void __init jmr3927_board_init(void)
 static void __init tx3927_setup(void)
 {
 	int i;
-#ifdef CONFIG_PCI
-	unsigned long mips_pci_io_base = JMR3927_PCIIO;
-	unsigned long mips_pci_io_size = JMR3927_PCIIO_SIZE;
-	unsigned long mips_pci_mem_base = JMR3927_PCIMEM;
-	unsigned long mips_pci_mem_size = JMR3927_PCIMEM_SIZE;
-	/* for legacy I/O, PCI I/O PCI Bus address must be 0 */
-	unsigned long mips_pci_io_pciaddr = 0;
-#endif
 
 	/* SDRAMC are configured by PROM */
 
@@ -272,74 +286,6 @@ static void __init tx3927_setup(void)
 	tx3927_dmaptr->mcr = TX3927_DMA_MCR_MSTEN | TX3927_DMA_MCR_LE;
 #endif
 
-#ifdef CONFIG_PCI
-	/* PCIC */
-	printk("TX3927 PCIC -- DID:%04x VID:%04x RID:%02x Arbiter:",
-	       tx3927_pcicptr->did, tx3927_pcicptr->vid,
-	       tx3927_pcicptr->rid);
-	if (!(tx3927_ccfgptr->ccfg & TX3927_CCFG_PCIXARB)) {
-		printk("External\n");
-		/* XXX */
-	} else {
-		printk("Internal\n");
-
-		/* Reset PCI Bus */
-		jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR);
-		udelay(100);
-		jmr3927_ioc_reg_out(JMR3927_IOC_RESET_PCI,
-				    JMR3927_IOC_RESET_ADDR);
-		udelay(100);
-		jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR);
-
-
-		/* Disable External PCI Config. Access */
-		tx3927_pcicptr->lbc = TX3927_PCIC_LBC_EPCAD;
-#ifdef __BIG_ENDIAN
-		tx3927_pcicptr->lbc |= TX3927_PCIC_LBC_IBSE |
-			TX3927_PCIC_LBC_TIBSE |
-			TX3927_PCIC_LBC_TMFBSE | TX3927_PCIC_LBC_MSDSE;
-#endif
-		/* LB->PCI mappings */
-		tx3927_pcicptr->iomas = ~(mips_pci_io_size - 1);
-		tx3927_pcicptr->ilbioma = mips_pci_io_base;
-		tx3927_pcicptr->ipbioma = mips_pci_io_pciaddr;
-		tx3927_pcicptr->mmas = ~(mips_pci_mem_size - 1);
-		tx3927_pcicptr->ilbmma = mips_pci_mem_base;
-		tx3927_pcicptr->ipbmma = mips_pci_mem_base;
-		/* PCI->LB mappings */
-		tx3927_pcicptr->iobas = 0xffffffff;
-		tx3927_pcicptr->ioba = 0;
-		tx3927_pcicptr->tlbioma = 0;
-		tx3927_pcicptr->mbas = ~(mips_pci_mem_size - 1);
-		tx3927_pcicptr->mba = 0;
-		tx3927_pcicptr->tlbmma = 0;
-		/* Enable Direct mapping Address Space Decoder */
-		tx3927_pcicptr->lbc |= TX3927_PCIC_LBC_ILMDE | TX3927_PCIC_LBC_ILIDE;
-
-		/* Clear All Local Bus Status */
-		tx3927_pcicptr->lbstat = TX3927_PCIC_LBIM_ALL;
-		/* Enable All Local Bus Interrupts */
-		tx3927_pcicptr->lbim = TX3927_PCIC_LBIM_ALL;
-		/* Clear All PCI Status Error */
-		tx3927_pcicptr->pcistat = TX3927_PCIC_PCISTATIM_ALL;
-		/* Enable All PCI Status Error Interrupts */
-		tx3927_pcicptr->pcistatim = TX3927_PCIC_PCISTATIM_ALL;
-
-		/* PCIC Int => IRC IRQ10 */
-		tx3927_pcicptr->il = TX3927_IR_PCI;
-		/* Target Control (per errata) */
-		tx3927_pcicptr->tc = TX3927_PCIC_TC_OF8E | TX3927_PCIC_TC_IF8E;
-
-		/* Enable Bus Arbiter */
-		tx3927_pcicptr->pbapmc = TX3927_PCIC_PBAPMC_PBAEN;
-
-		tx3927_pcicptr->pcicmd = PCI_COMMAND_MASTER |
-			PCI_COMMAND_MEMORY |
-			PCI_COMMAND_IO |
-			PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
-	}
-#endif /* CONFIG_PCI */
-
 	/* PIO */
 	/* PIO[15:12] connected to LEDs */
 	__raw_writel(0x0000f000, &tx3927_pioptr->dir);
diff --git a/arch/mips/txx9/rbtx4927/irq.c b/arch/mips/txx9/rbtx4927/irq.c
index 936e50e91d95..bef1447aeed2 100644
--- a/arch/mips/txx9/rbtx4927/irq.c
+++ b/arch/mips/txx9/rbtx4927/irq.c
@@ -111,9 +111,6 @@ JP7 is not bus master -- do NOT use -- only 4 pci bus master's allowed -- SouthB
 #include <linux/types.h>
 #include <linux/interrupt.h>
 #include <asm/io.h>
-#ifdef CONFIG_TOSHIBA_FPCIB0
-#include <asm/i8259.h>
-#endif
 #include <asm/txx9/rbtx4927.h>
 
 #define TOSHIBA_RBTX4927_IRQ_IOC_RAW_BEG   0
@@ -125,8 +122,6 @@ JP7 is not bus master -- do NOT use -- only 4 pci bus master's allowed -- SouthB
 #define TOSHIBA_RBTX4927_IRQ_NEST_IOC_ON_PIC TX4927_IRQ_NEST_EXT_ON_PIC
 #define TOSHIBA_RBTX4927_IRQ_NEST_ISA_ON_IOC (TOSHIBA_RBTX4927_IRQ_IOC_BEG+2)
 
-extern int tx4927_using_backplane;
-
 static void toshiba_rbtx4927_irq_ioc_enable(unsigned int irq);
 static void toshiba_rbtx4927_irq_ioc_disable(unsigned int irq);
 
@@ -146,17 +141,8 @@ int toshiba_rbtx4927_irq_nested(int sw_irq)
 	u8 level3;
 
 	level3 = readb(TOSHIBA_RBTX4927_IOC_INTR_STAT) & 0x1f;
-	if (level3) {
+	if (level3)
 		sw_irq = TOSHIBA_RBTX4927_IRQ_IOC_BEG + fls(level3) - 1;
-#ifdef CONFIG_TOSHIBA_FPCIB0
-		if (sw_irq == TOSHIBA_RBTX4927_IRQ_NEST_ISA_ON_IOC &&
-		    tx4927_using_backplane) {
-			int irq = i8259_irq();
-			if (irq >= 0)
-				sw_irq = irq;
-		}
-#endif
-	}
 	return (sw_irq);
 }
 
@@ -205,10 +191,6 @@ void __init arch_init_irq(void)
 
 	tx4927_irq_init();
 	toshiba_rbtx4927_irq_ioc_init();
-#ifdef CONFIG_TOSHIBA_FPCIB0
-	if (tx4927_using_backplane)
-		init_i8259_irqs();
-#endif
 	/* Onboard 10M Ether: High Active */
 	set_irq_type(RBTX4927_RTL_8019_IRQ, IRQF_TRIGGER_HIGH);
 }
diff --git a/arch/mips/txx9/rbtx4927/setup.c b/arch/mips/txx9/rbtx4927/setup.c
index df1b6e99b666..86b870abc319 100644
--- a/arch/mips/txx9/rbtx4927/setup.c
+++ b/arch/mips/txx9/rbtx4927/setup.c
@@ -47,10 +47,10 @@
 #include <linux/types.h>
 #include <linux/ioport.h>
 #include <linux/interrupt.h>
-#include <linux/pci.h>
 #include <linux/pm.h>
 #include <linux/platform_device.h>
 #include <linux/clk.h>
+#include <linux/delay.h>
 
 #include <asm/bootinfo.h>
 #include <asm/io.h>
@@ -58,10 +58,10 @@
 #include <asm/reboot.h>
 #include <asm/time.h>
 #include <asm/txx9tmr.h>
-#ifdef CONFIG_TOSHIBA_FPCIB0
-#include <asm/txx9/smsc_fdc37m81x.h>
-#endif
+#include <asm/txx9/generic.h>
+#include <asm/txx9/pci.h>
 #include <asm/txx9/rbtx4927.h>
+#include <asm/txx9/tx4938.h>	/* for TX4937 */
 #ifdef CONFIG_SERIAL_TXX9
 #include <linux/serial_core.h>
 #endif
@@ -70,356 +70,116 @@
 extern void toshiba_rbtx4927_restart(char *command);
 extern void toshiba_rbtx4927_halt(void);
 extern void toshiba_rbtx4927_power_off(void);
-
-int tx4927_using_backplane = 0;
-
 extern void toshiba_rbtx4927_irq_setup(void);
 
 char *prom_getcmdline(void);
 
-#ifdef CONFIG_PCI
-#undef TX4927_SUPPORT_COMMAND_IO
-#undef  TX4927_SUPPORT_PCI_66
-int tx4927_cpu_clock = 100000000;	/* 100MHz */
-unsigned long mips_pci_io_base;
-unsigned long mips_pci_io_size;
-unsigned long mips_pci_mem_base;
-unsigned long mips_pci_mem_size;
-/* for legacy I/O, PCI I/O PCI Bus address must be 0 */
-unsigned long mips_pci_io_pciaddr = 0;
-unsigned long mips_memory_upper;
 static int tx4927_ccfg_toeon = 1;
-static int tx4927_pcic_trdyto = 0;	/* default: disabled */
-unsigned long tx4927_ce_base[8];
-int tx4927_pci66 = 0;		/* 0:auto */
-#endif
 
 char *toshiba_name = "";
 
 #ifdef CONFIG_PCI
-extern struct pci_controller tx4927_controller;
-
-static struct pci_dev *fake_pci_dev(struct pci_controller *hose,
-				    int top_bus, int busnr, int devfn)
+static void __init tx4927_pci_setup(void)
 {
-	static struct pci_dev dev;
-	static struct pci_bus bus;
-
-	dev.sysdata = (void *)hose;
-	dev.devfn = devfn;
-	bus.number = busnr;
-	bus.ops = hose->pci_ops;
-	bus.parent = NULL;
-	dev.bus = &bus;
-
-	return &dev;
-}
-
-#define EARLY_PCI_OP(rw, size, type)                                    \
-static int early_##rw##_config_##size(struct pci_controller *hose,      \
-        int top_bus, int bus, int devfn, int offset, type value)        \
-{                                                                       \
-        return pci_##rw##_config_##size(                                \
-                fake_pci_dev(hose, top_bus, bus, devfn),                \
-                offset, value);                                         \
+	int extarb = !(__raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_PCIARB);
+	struct pci_controller *c = &txx9_primary_pcic;
+
+	register_pci_controller(c);
+
+	if (__raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_PCI66)
+		txx9_pci_option =
+			(txx9_pci_option & ~TXX9_PCI_OPT_CLK_MASK) |
+			TXX9_PCI_OPT_CLK_66; /* already configured */
+
+	/* Reset PCI Bus */
+	writeb(1, rbtx4927_pcireset_addr);
+	/* Reset PCIC */
+	txx9_set64(&tx4927_ccfgptr->clkctr, TX4927_CLKCTR_PCIRST);
+	if ((txx9_pci_option & TXX9_PCI_OPT_CLK_MASK) ==
+	    TXX9_PCI_OPT_CLK_66)
+		tx4927_pciclk66_setup();
+	mdelay(10);
+	/* clear PCIC reset */
+	txx9_clear64(&tx4927_ccfgptr->clkctr, TX4927_CLKCTR_PCIRST);
+	writeb(0, rbtx4927_pcireset_addr);
+	iob();
+
+	tx4927_report_pciclk();
+	tx4927_pcic_setup(tx4927_pcicptr, c, extarb);
+	if ((txx9_pci_option & TXX9_PCI_OPT_CLK_MASK) ==
+	    TXX9_PCI_OPT_CLK_AUTO &&
+	    txx9_pci66_check(c, 0, 0)) {
+		/* Reset PCI Bus */
+		writeb(1, rbtx4927_pcireset_addr);
+		/* Reset PCIC */
+		txx9_set64(&tx4927_ccfgptr->clkctr, TX4927_CLKCTR_PCIRST);
+		tx4927_pciclk66_setup();
+		mdelay(10);
+		/* clear PCIC reset */
+		txx9_clear64(&tx4927_ccfgptr->clkctr, TX4927_CLKCTR_PCIRST);
+		writeb(0, rbtx4927_pcireset_addr);
+		iob();
+		/* Reinitialize PCIC */
+		tx4927_report_pciclk();
+		tx4927_pcic_setup(tx4927_pcicptr, c, extarb);
+	}
 }
 
-EARLY_PCI_OP(read, byte, u8 *)
-EARLY_PCI_OP(read, dword, u32 *)
-EARLY_PCI_OP(write, byte, u8)
-EARLY_PCI_OP(write, dword, u32)
-
-static int __init tx4927_pcibios_init(void)
+static void __init tx4937_pci_setup(void)
 {
-	unsigned int id;
-	u32 pci_devfn;
-	int devfn_start = 0;
-	int devfn_stop = 0xff;
-	int busno = 0; /* One bus on the Toshiba */
-	struct pci_controller *hose = &tx4927_controller;
-
-	for (pci_devfn = devfn_start; pci_devfn < devfn_stop; pci_devfn++) {
-		early_read_config_dword(hose, busno, busno, pci_devfn,
-					PCI_VENDOR_ID, &id);
-
-		if (id == 0xffffffff) {
-			continue;
-		}
-
-		if (id == 0x94601055) {
-			u8 v08_64;
-			u32 v32_b0;
-			u8 v08_e1;
-
-			early_read_config_byte(hose, busno, busno,
-					       pci_devfn, 0x64, &v08_64);
-			early_read_config_dword(hose, busno, busno,
-						pci_devfn, 0xb0, &v32_b0);
-			early_read_config_byte(hose, busno, busno,
-					       pci_devfn, 0xe1, &v08_e1);
-
-			/* serial irq control */
-			v08_64 = 0xd0;
-
-			/* serial irq pin */
-			v32_b0 |= 0x00010000;
-
-			/* ide irq on isa14 */
-			v08_e1 &= 0xf0;
-			v08_e1 |= 0x0d;
-
-			early_write_config_byte(hose, busno, busno,
-						pci_devfn, 0x64, v08_64);
-			early_write_config_dword(hose, busno, busno,
-						 pci_devfn, 0xb0, v32_b0);
-			early_write_config_byte(hose, busno, busno,
-						pci_devfn, 0xe1, v08_e1);
-		}
-
-		if (id == 0x91301055) {
-			u8 v08_04;
-			u8 v08_09;
-			u8 v08_41;
-			u8 v08_43;
-			u8 v08_5c;
-
-			early_read_config_byte(hose, busno, busno,
-					       pci_devfn, 0x04, &v08_04);
-			early_read_config_byte(hose, busno, busno,
-					       pci_devfn, 0x09, &v08_09);
-			early_read_config_byte(hose, busno, busno,
-					       pci_devfn, 0x41, &v08_41);
-			early_read_config_byte(hose, busno, busno,
-					       pci_devfn, 0x43, &v08_43);
-			early_read_config_byte(hose, busno, busno,
-					       pci_devfn, 0x5c, &v08_5c);
-
-			/* enable ide master/io */
-			v08_04 |= (PCI_COMMAND_MASTER | PCI_COMMAND_IO);
-
-			/* enable ide native mode */
-			v08_09 |= 0x05;
-
-			/* enable primary ide */
-			v08_41 |= 0x80;
-
-			/* enable secondary ide */
-			v08_43 |= 0x80;
-
-			/*
-			 * !!! DO NOT REMOVE THIS COMMENT IT IS REQUIRED BY SMSC !!!
-			 *
-			 * This line of code is intended to provide the user with a work
-			 * around solution to the anomalies cited in SMSC's anomaly sheet
-			 * entitled, "SLC90E66 Functional Rev.J_0.1 Anomalies"".
-			 *
-			 * !!! DO NOT REMOVE THIS COMMENT IT IS REQUIRED BY SMSC !!!
-			 */
-			v08_5c |= 0x01;
-
-			early_write_config_byte(hose, busno, busno,
-						pci_devfn, 0x5c, v08_5c);
-			early_write_config_byte(hose, busno, busno,
-						pci_devfn, 0x04, v08_04);
-			early_write_config_byte(hose, busno, busno,
-						pci_devfn, 0x09, v08_09);
-			early_write_config_byte(hose, busno, busno,
-						pci_devfn, 0x41, v08_41);
-			early_write_config_byte(hose, busno, busno,
-						pci_devfn, 0x43, v08_43);
-		}
-
+	int extarb = !(__raw_readq(&tx4938_ccfgptr->ccfg) & TX4938_CCFG_PCIARB);
+	struct pci_controller *c = &txx9_primary_pcic;
+
+	register_pci_controller(c);
+
+	if (__raw_readq(&tx4938_ccfgptr->ccfg) & TX4938_CCFG_PCI66)
+		txx9_pci_option =
+			(txx9_pci_option & ~TXX9_PCI_OPT_CLK_MASK) |
+			TXX9_PCI_OPT_CLK_66; /* already configured */
+
+	/* Reset PCI Bus */
+	writeb(1, rbtx4927_pcireset_addr);
+	/* Reset PCIC */
+	txx9_set64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
+	if ((txx9_pci_option & TXX9_PCI_OPT_CLK_MASK) ==
+	    TXX9_PCI_OPT_CLK_66)
+		tx4938_pciclk66_setup();
+	mdelay(10);
+	/* clear PCIC reset */
+	txx9_clear64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
+	writeb(0, rbtx4927_pcireset_addr);
+	iob();
+
+	tx4938_report_pciclk();
+	tx4927_pcic_setup(tx4938_pcicptr, c, extarb);
+	if ((txx9_pci_option & TXX9_PCI_OPT_CLK_MASK) ==
+	    TXX9_PCI_OPT_CLK_AUTO &&
+	    txx9_pci66_check(c, 0, 0)) {
+		/* Reset PCI Bus */
+		writeb(1, rbtx4927_pcireset_addr);
+		/* Reset PCIC */
+		txx9_set64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
+		tx4938_pciclk66_setup();
+		mdelay(10);
+		/* clear PCIC reset */
+		txx9_clear64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
+		writeb(0, rbtx4927_pcireset_addr);
+		iob();
+		/* Reinitialize PCIC */
+		tx4938_report_pciclk();
+		tx4927_pcic_setup(tx4938_pcicptr, c, extarb);
 	}
-
-	register_pci_controller(&tx4927_controller);
-	return 0;
 }
 
-arch_initcall(tx4927_pcibios_init);
-
-extern struct resource pci_io_resource;
-extern struct resource pci_mem_resource;
-
-void __init tx4927_pci_setup(void)
+static int __init rbtx4927_arch_init(void)
 {
-	static int called = 0;
-	extern unsigned int tx4927_get_mem_size(void);
-
-	mips_memory_upper = tx4927_get_mem_size() << 20;
-	mips_memory_upper += KSEG0;
-	mips_pci_io_base = TX4927_PCIIO;
-	mips_pci_io_size = TX4927_PCIIO_SIZE;
-	mips_pci_mem_base = TX4927_PCIMEM;
-	mips_pci_mem_size = TX4927_PCIMEM_SIZE;
-
-	if (!called) {
-		printk
-		    ("%s PCIC -- DID:%04x VID:%04x RID:%02x Arbiter:%s\n",
-		     toshiba_name,
-		     (unsigned short) (tx4927_pcicptr->pciid >> 16),
-		     (unsigned short) (tx4927_pcicptr->pciid & 0xffff),
-		     (unsigned short) (tx4927_pcicptr->pciccrev & 0xff),
-		     (!(tx4927_ccfgptr->
-