[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>

20 files changed, 1397 insertions, 1630 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 3202960f7597..2ea6fff88811 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -575,7 +575,7 @@ config TOSHIBA_RBTX4927
 	select HW_HAS_PCI
 	select IRQ_CPU
 	select IRQ_TXX9
-	select I8259 if TOSHIBA_FPCIB0
+	select PCI_TX4927
 	select SWAP_IO_SPACE
 	select SYS_HAS_CPU_TX49XX
 	select SYS_SUPPORTS_32BIT_KERNEL
@@ -598,6 +598,7 @@ config TOSHIBA_RBTX4938
 	select HW_HAS_PCI
 	select IRQ_CPU
 	select IRQ_TXX9
+	select PCI_TX4927
 	select SWAP_IO_SPACE
 	select SYS_HAS_CPU_TX49XX
 	select SYS_SUPPORTS_32BIT_KERNEL
diff --git a/arch/mips/pci/Makefile b/arch/mips/pci/Makefile
index 4608e43de28c..908764878ac8 100644
--- a/arch/mips/pci/Makefile
+++ b/arch/mips/pci/Makefile
@@ -15,6 +15,8 @@ obj-$(CONFIG_MIPS_TX3927)	+= ops-tx3927.o
 obj-$(CONFIG_PCI_VR41XX)	+= ops-vr41xx.o pci-vr41xx.o
 obj-$(CONFIG_NEC_CMBVR4133)	+= fixup-vr4133.o
 obj-$(CONFIG_MARKEINS)		+= ops-emma2rh.o pci-emma2rh.o fixup-emma2rh.o
+obj-$(CONFIG_PCI_TX3927)	+= ops-tx3927.o
+obj-$(CONFIG_PCI_TX4927)	+= ops-tx4927.o
 
 #
 # These are still pretty much in the old state, watch, go blind.
@@ -41,9 +43,9 @@ obj-$(CONFIG_SNI_RM)		+= fixup-sni.o ops-sni.o
 obj-$(CONFIG_TANBAC_TB0219)	+= fixup-tb0219.o
 obj-$(CONFIG_TANBAC_TB0226)	+= fixup-tb0226.o
 obj-$(CONFIG_TANBAC_TB0287)	+= fixup-tb0287.o
-obj-$(CONFIG_TOSHIBA_JMR3927)	+= fixup-jmr3927.o pci-jmr3927.o
-obj-$(CONFIG_TOSHIBA_RBTX4927)	+= fixup-rbtx4927.o ops-tx4927.o
-obj-$(CONFIG_TOSHIBA_RBTX4938)	+= fixup-rbtx4938.o ops-tx4938.o
+obj-$(CONFIG_TOSHIBA_JMR3927)	+= fixup-jmr3927.o
+obj-$(CONFIG_TOSHIBA_RBTX4927)	+= fixup-rbtx4927.o pci-tx4927.o pci-tx4938.o
+obj-$(CONFIG_TOSHIBA_RBTX4938)	+= fixup-rbtx4938.o pci-tx4938.o
 obj-$(CONFIG_VICTOR_MPC30X)	+= fixup-mpc30x.o
 obj-$(CONFIG_ZAO_CAPCELLA)	+= fixup-capcella.o
 obj-$(CONFIG_WR_PPMC)		+= fixup-wrppmc.o
diff --git a/arch/mips/pci/fixup-jmr3927.c b/arch/mips/pci/fixup-jmr3927.c
index 41dcd6a3aae5..d5edaf21e088 100644
--- a/arch/mips/pci/fixup-jmr3927.c
+++ b/arch/mips/pci/fixup-jmr3927.c
@@ -28,36 +28,31 @@
  *  675 Mass Ave, Cambridge, MA 02139, USA.
  */
 #include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-
+#include <asm/txx9/pci.h>
 #include <asm/txx9/jmr3927.h>
 
 int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	unsigned char irq = pin;
 
-	/* SMSC SLC90E66 IDE uses irq 14, 15 (default) */
-	if (dev->vendor == PCI_VENDOR_ID_EFAR &&
-	    dev->device == PCI_DEVICE_ID_EFAR_SLC90E66_1)
-		return irq;
 	/* IRQ rotation (PICMG) */
 	irq--;			/* 0-3 */
-	if (dev->bus->parent == NULL &&
-	    slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(23)) {
+	if (slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(23)) {
 		/* PCI CardSlot (IDSEL=A23, DevNu=12) */
 		/* PCIA => PCIC (IDSEL=A23) */
 		/* NOTE: JMR3927 JP1 must be set to OPEN */
 		irq = (irq + 2) % 4;
-	} else if (dev->bus->parent == NULL &&
-		   slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(22)) {
+	} else if (slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(22)) {
 		/* PCI CardSlot (IDSEL=A22, DevNu=11) */
 		/* PCIA => PCIA (IDSEL=A22) */
 		/* NOTE: JMR3927 JP1 must be set to OPEN */
 		irq = (irq + 0) % 4;
 	} else {
 		/* PCI Backplane */
-		irq = (irq + 3 + slot) % 4;
+		if (txx9_pci_option & TXX9_PCI_OPT_PICMG)
+			irq = (irq + 33 - slot) % 4;
+		else
+			irq = (irq + 3 + slot) % 4;
 	}
 	irq++;			/* 1-4 */
 
@@ -66,15 +61,13 @@ int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 		irq = JMR3927_IRQ_IOC_PCIA;
 		break;
 	case 2:
-		// wrong for backplane irq = JMR3927_IRQ_IOC_PCIB;
-		irq = JMR3927_IRQ_IOC_PCID;
+		irq = JMR3927_IRQ_IOC_PCIB;
 		break;
 	case 3:
 		irq = JMR3927_IRQ_IOC_PCIC;
 		break;
 	case 4:
-		// wrong for backplane irq = JMR3927_IRQ_IOC_PCID;
-		irq = JMR3927_IRQ_IOC_PCIB;
+		irq = JMR3927_IRQ_IOC_PCID;
 		break;
 	}
 
diff --git a/arch/mips/pci/fixup-rbtx4927.c b/arch/mips/pci/fixup-rbtx4927.c
index 26013badfe1f..abab4852d158 100644
--- a/arch/mips/pci/fixup-rbtx4927.c
+++ b/arch/mips/pci/fixup-rbtx4927.c
@@ -33,102 +33,42 @@
  *  675 Mass Ave, Cambridge, MA 02139, USA.
  */
 #include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
+#include <asm/txx9/pci.h>
+#include <asm/txx9/rbtx4927.h>
 
-#include <asm/txx9/tx4927.h>
-
-#undef  DEBUG
-#ifdef  DEBUG
-#define DBG(x...)       printk(x)
-#else
-#define DBG(x...)
-#endif
-
-/* look up table for backplane pci irq for slots 17-20 by pin # */
-static unsigned char backplane_pci_irq[4][4] = {
-	/* PJ6 SLOT:  17, PIN: 1 */ {TX4927_IRQ_IOC_PCIA,
-				     /* PJ6 SLOT:  17, PIN: 2 */
-				     TX4927_IRQ_IOC_PCIB,
-				     /* PJ6 SLOT:  17, PIN: 3 */
-				     TX4927_IRQ_IOC_PCIC,
-				     /* PJ6 SLOT:  17, PIN: 4 */
-				     TX4927_IRQ_IOC_PCID},
-	/* SB  SLOT:  18, PIN: 1 */ {TX4927_IRQ_IOC_PCIB,
-				     /* SB  SLOT:  18, PIN: 2 */
-				     TX4927_IRQ_IOC_PCIC,
-				     /* SB  SLOT:  18, PIN: 3 */
-				     TX4927_IRQ_IOC_PCID,
-				     /* SB  SLOT:  18, PIN: 4 */
-				     TX4927_IRQ_IOC_PCIA},
-	/* PJ5 SLOT:  19, PIN: 1 */ {TX4927_IRQ_IOC_PCIC,
-				     /* PJ5 SLOT:  19, PIN: 2 */
-				     TX4927_IRQ_IOC_PCID,
-				     /* PJ5 SLOT:  19, PIN: 3 */
-				     TX4927_IRQ_IOC_PCIA,
-				     /* PJ5 SLOT:  19, PIN: 4 */
-				     TX4927_IRQ_IOC_PCIB},
-	/* PJ4 SLOT:  20, PIN: 1 */ {TX4927_IRQ_IOC_PCID,
-				     /* PJ4 SLOT:  20, PIN: 2 */
-				     TX4927_IRQ_IOC_PCIA,
-				     /* PJ4 SLOT:  20, PIN: 3 */
-				     TX4927_IRQ_IOC_PCIB,
-				     /* PJ4 SLOT:  20, PIN: 4 */
-				     TX4927_IRQ_IOC_PCIC}
-};
-
-static int pci_get_irq(const struct pci_dev *dev, int pin)
+int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	unsigned char irq = pin;
 
-	DBG("pci_get_irq: pin is %d\n", pin);
 	/* IRQ rotation */
 	irq--;			/* 0-3 */
-	if (dev->bus->parent == NULL &&
-	    PCI_SLOT(dev->devfn) == TX4927_PCIC_IDSEL_AD_TO_SLOT(23)) {
-		printk("Onboard PCI_SLOT(dev->devfn) is %d\n",
-		       PCI_SLOT(dev->devfn));
-		/* IDSEL=A23 is tx4927 onboard pci slot */
-		irq = (irq + PCI_SLOT(dev->devfn)) % 4;
-		irq++;		/* 1-4 */
-		DBG("irq is now %d\n", irq);
-
-		switch (irq) {
-		case 1:
-			irq = TX4927_IRQ_IOC_PCIA;
-			break;
-		case 2:
-			irq = TX4927_IRQ_IOC_PCIB;
-			break;
-		case 3:
-			irq = TX4927_IRQ_IOC_PCIC;
-			break;
-		case 4:
-			irq = TX4927_IRQ_IOC_PCID;
-			break;
-		}
+	if (slot == TX4927_PCIC_IDSEL_AD_TO_SLOT(23)) {
+		/* PCI CardSlot (IDSEL=A23) */
+		/* PCIA => PCIA */
+		irq = (irq + 0 + slot) % 4;
 	} else {
 		/* PCI Backplane */
-		DBG("PCI Backplane PCI_SLOT(dev->devfn) is %d\n",
-		    PCI_SLOT(dev->devfn));
-		irq = backplane_pci_irq[PCI_SLOT(dev->devfn) - 17][irq];
+		if (txx9_pci_option & TXX9_PCI_OPT_PICMG)
+			irq = (irq + 33 - slot) % 4;
+		else
+			irq = (irq + 3 + slot) % 4;
 	}
-	DBG("assigned irq %d\n", irq);
-	return irq;
-}
-
-int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
-{
-	unsigned char irq;
-
-	printk("PCI Setup for pin %d \n", pin);
-
-	if (dev->device == 0x9130) /* IDE */
-		irq = 14;
-	else
-		irq = pci_get_irq(dev, pin);
+	irq++;	/* 1-4 */
 
+	switch (irq) {
+	case 1:
+		irq = RBTX4927_IRQ_IOC_PCIA;
+		break;
+	case 2:
+		irq = RBTX4927_IRQ_IOC_PCIB;
+		break;
+	case 3:
+		irq = RBTX4927_IRQ_IOC_PCIC;
+		break;
+	case 4:
+		irq = RBTX4927_IRQ_IOC_PCID;
+		break;
+	}
 	return irq;
 }
 
diff --git a/arch/mips/pci/fixup-rbtx4938.c b/arch/mips/pci/fixup-rbtx4938.c
index 64d4510c0265..39c995830384 100644
--- a/arch/mips/pci/fixup-rbtx4938.c
+++ b/arch/mips/pci/fixup-rbtx4938.c
@@ -10,45 +10,28 @@
  * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com)
  */
 #include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-
+#include <asm/txx9/pci.h>
 #include <asm/txx9/rbtx4938.h>
 
-extern struct pci_controller tx4938_pci_controller[];
-
-static int pci_get_irq(const struct pci_dev *dev, int pin)
+int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
-	int irq = pin;
-	u8 slot = PCI_SLOT(dev->devfn);
-	struct pci_controller *controller = (struct pci_controller *)dev->sysdata;
-
-	if (controller == &tx4938_pci_controller[1]) {
-		/* TX4938 PCIC1 */
-		switch (slot) {
-		case TX4938_PCIC_IDSEL_AD_TO_SLOT(31):
-			if (tx4938_ccfgptr->pcfg & TX4938_PCFG_ETH0_SEL)
-				return RBTX4938_IRQ_IRC + TX4938_IR_ETH0;
-			break;
-		case TX4938_PCIC_IDSEL_AD_TO_SLOT(30):
-			if (tx4938_ccfgptr->pcfg & TX4938_PCFG_ETH1_SEL)
-				return RBTX4938_IRQ_IRC + TX4938_IR_ETH1;
-			break;
-		}
-		return 0;
-	}
+	int irq = tx4938_pcic1_map_irq(dev, slot);
 
+	if (irq >= 0)
+		return irq;
+	irq = pin;
 	/* IRQ rotation */
 	irq--;	/* 0-3 */
-	if (dev->bus->parent == NULL &&
-	    (slot == TX4938_PCIC_IDSEL_AD_TO_SLOT(23))) {
+	if (slot == TX4927_PCIC_IDSEL_AD_TO_SLOT(23)) {
 		/* PCI CardSlot (IDSEL=A23) */
 		/* PCIA => PCIA (IDSEL=A23) */
 		irq = (irq + 0 + slot) % 4;
 	} else {
 		/* PCI Backplane */
-		irq = (irq + 33 - slot) % 4;
+		if (txx9_pci_option & TXX9_PCI_OPT_PICMG)
+			irq = (irq + 33 - slot) % 4;
+		else
+			irq = (irq + 3 + slot) % 4;
 	}
 	irq++;	/* 1-4 */
 
@@ -69,19 +52,6 @@ static int pci_get_irq(const struct pci_dev *dev, int pin)
 	return irq;
 }
 
-int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
-{
-	unsigned char irq = 0;
-
-	irq = pci_get_irq(dev, pin);
-
-	printk(KERN_INFO "PCI: 0x%02x:0x%02x(0x%02x,0x%02x) IRQ=%d\n",
-	       dev->bus->number, dev->devfn, PCI_SLOT(dev->devfn),
-	       PCI_FUNC(dev->devfn), irq);
-
-	return irq;
-}
-
 /*
  * Do platform specific device initialization at pci_enable_device() time
  */
diff --git a/arch/mips/pci/ops-tx3927.c b/arch/mips/pci/ops-tx3927.c
index 5d398f694682..8a17a39e5bf2 100644
--- a/arch/mips/pci/ops-tx3927.c
+++ b/arch/mips/pci/ops-tx3927.c
@@ -8,7 +8,7 @@
  *
  * Based on arch/mips/ddb5xxx/ddb5477/pci_ops.c
  *
- *     Define the pci_ops for JMR3927.
+ *     Define the pci_ops for TX3927.
  *
  * Much of the code is derived from the original DDB5074 port by
  * Geert Uytterhoeven <geert@sonycom.com>
@@ -39,7 +39,7 @@
 #include <linux/init.h>
 
 #include <asm/addrspace.h>
-#include <asm/txx9/jmr3927.h>
+#include <asm/txx9/tx3927.h>
 
 static inline int mkaddr(unsigned char bus, unsigned char dev_fn,
 	unsigned char where)
@@ -68,7 +68,7 @@ static inline int check_abort(void)
 	return PCIBIOS_SUCCESSFUL;
 }
 
-static int jmr3927_pci_read_config(struct pci_bus *bus, unsigned int devfn,
+static int tx3927_pci_read_config(struct pci_bus *bus, unsigned int devfn,
 	int where, int size, u32 * val)
 {
 	int ret;
@@ -94,7 +94,7 @@ static int jmr3927_pci_read_config(struct pci_bus *bus, unsigned int devfn,
 	return check_abort();
 }
 
-static int jmr3927_pci_write_config(struct pci_bus *bus, unsigned int devfn,
+static int tx3927_pci_write_config(struct pci_bus *bus, unsigned int devfn,
 	int where, int size, u32 val)
 {
 	int ret;
@@ -125,7 +125,80 @@ static int jmr3927_pci_write_config(struct pci_bus *bus, unsigned int devfn,
 	return check_abort();
 }
 
-struct pci_ops jmr3927_pci_ops = {
-	jmr3927_pci_read_config,
-	jmr3927_pci_write_config,
+static struct pci_ops tx3927_pci_ops = {
+	.read = tx3927_pci_read_config,
+	.write = tx3927_pci_write_config,
 };
+
+void __init tx3927_pcic_setup(struct pci_controller *channel,
+			      unsigned long sdram_size, int extarb)
+{
+	unsigned long flags;
+	unsigned long io_base =
+		channel->io_resource->start + mips_io_port_base - IO_BASE;
+	unsigned long io_size =
+		channel->io_resource->end - channel->io_resource->start;
+	unsigned long io_pciaddr =
+		channel->io_resource->start - channel->io_offset;
+	unsigned long mem_base =
+		channel->mem_resource->start;
+	unsigned long mem_size =
+		channel->mem_resource->end - channel->mem_resource->start;
+	unsigned long mem_pciaddr =
+		channel->mem_resource->start - channel->mem_offset;
+
+	printk(KERN_INFO "TX3927 PCIC -- DID:%04x VID:%04x RID:%02x Arbiter:%s",
+	       tx3927_pcicptr->did, tx3927_pcicptr->vid,
+	       tx3927_pcicptr->rid,
+	       extarb ? "External" : "Internal");
+	channel->pci_ops = &tx3927_pci_ops;
+
+	local_irq_save(flags);
+	/* 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 = ~(io_size - 1);
+	tx3927_pcicptr->ilbioma = io_base;
+	tx3927_pcicptr->ipbioma = io_pciaddr;
+	tx3927_pcicptr->mmas = ~(mem_size - 1);
+	tx3927_pcicptr->ilbmma = mem_base;
+	tx3927_pcicptr->ipbmma = mem_pciaddr;
+	/* PCI->LB mappings */
+	tx3927_pcicptr->iobas = 0xffffffff;
+	tx3927_pcicptr->ioba = 0;
+	tx3927_pcicptr->tlbioma = 0;
+	tx3927_pcicptr->mbas = ~(sdram_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 */
+	if (!extarb)
+		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;
+	local_irq_restore(flags);
+}
diff --git a/arch/mips/pci/ops-tx4927.c b/arch/mips/pci/ops-tx4927.c
index 54730eee451b..c6b49bccd274 100644
--- a/arch/mips/pci/ops-tx4927.c
+++ b/arch/mips/pci/ops-tx4927.c
@@ -1,206 +1,408 @@
 /*
- * Copyright 2001 MontaVista Software Inc.
- * Author: MontaVista Software, Inc.
- *              ahennessy@mvista.com
+ * Define the pci_ops for the PCIC on Toshiba TX4927, TX4938, etc.
  *
- * Copyright (C) 2000-2001 Toshiba Corporation
- * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
- *
- * Based on arch/mips/ddb5xxx/ddb5477/pci_ops.c
- *
- *     Define the pci_ops for the Toshiba rbtx4927
- *
- * Much of the code is derived from the original DDB5074 port by
- * Geert Uytterhoeven <geert@sonycom.com>
- *
- * Copyright 2004 MontaVista Software Inc.
- * Author: Manish Lachwani (mlachwani@mvista.com)
- *
- *  This program is free software; you can redistribute  it and/or modify it
- *  under  the terms of  the GNU General  Public License as published by the
- *  Free Software Foundation;  either version 2 of the  License, or (at your
- *  option) any later version.
+ * Based on linux/arch/mips/pci/ops-tx4938.c,
+ *          linux/arch/mips/pci/fixup-rbtx4938.c,
+ *          linux/arch/mips/txx9/rbtx4938/setup.c,
+ *	    and RBTX49xx patch from CELF patch archive.
  *
- *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
- *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
- *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
- *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
- *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
- *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
- *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 2003-2005 (c) MontaVista Software, Inc.
+ * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
+ * (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007
  *
- *  You should have received a copy of the  GNU General Public License along
- *  with this program; if not, write  to the Free Software Foundation, Inc.,
- *  675 Mass Ave, Cambridge, MA 02139, USA.
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
  */
-#include <linux/types.h>
-#include <linux/pci.h>
 #include <linux/kernel.h>
-#include <linux/init.h>
-#include <asm/txx9/tx4927.h>
-
-/* initialize in setup */
-struct resource pci_io_resource = {
-	.name	= "TX4927 PCI IO SPACE",
-	.start	= 0x1000,
-	.end	= (0x1000 + (TX4927_PCIIO_SIZE)) - 1,
-	.flags	= IORESOURCE_IO
-};
+#include <asm/txx9/tx4927pcic.h>
 
-/* initialize in setup */
-struct resource pci_mem_resource = {
-	.name	= "TX4927 PCI MEM SPACE",
-	.start	= TX4927_PCIMEM,
-	.end	= TX4927_PCIMEM + TX4927_PCIMEM_SIZE - 1,
-	.flags	= IORESOURCE_MEM
-};
+static struct {
+	struct pci_controller *channel;
+	struct tx4927_pcic_reg __iomem *pcicptr;
+} pcicptrs[2];	/* TX4938 has 2 pcic */
+
+static void __init set_tx4927_pcicptr(struct pci_controller *channel,
+				      struct tx4927_pcic_reg __iomem *pcicptr)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(pcicptrs); i++) {
+		if (pcicptrs[i].channel == channel) {
+			pcicptrs[i].pcicptr = pcicptr;
+			return;
+		}
+	}
+	for (i = 0; i < ARRAY_SIZE(pcicptrs); i++) {
+		if (!pcicptrs[i].channel) {
+			pcicptrs[i].channel = channel;
+			pcicptrs[i].pcicptr = pcicptr;
+			return;
+		}
+	}
+	BUG();
+}
 
-static int mkaddr(int bus, int dev_fn, int where, int *flagsp)
+struct tx4927_pcic_reg __iomem *get_tx4927_pcicptr(
+	struct pci_controller *channel)
 {
-	if (bus > 0) {
-		/* Type 1 configuration */
-		tx4927_pcicptr->g2pcfgadrs = ((bus & 0xff) << 0x10) |
-		    ((dev_fn & 0xff) << 0x08) | (where & 0xfc) | 1;
-	} else {
-		if (dev_fn >= PCI_DEVFN(TX4927_PCIC_MAX_DEVNU, 0))
-			return -1;
+	int i;
 
-		/* Type 0 configuration */
-		tx4927_pcicptr->g2pcfgadrs = ((bus & 0xff) << 0x10) |
-		    ((dev_fn & 0xff) << 0x08) | (where & 0xfc);
+	for (i = 0; i < ARRAY_SIZE(pcicptrs); i++) {
+		if (pcicptrs[i].channel == channel)
+			return pcicptrs[i].pcicptr;
 	}
+	return NULL;
+}
+
+static int mkaddr(struct pci_bus *bus, unsigned int devfn, int where,
+		  struct tx4927_pcic_reg __iomem *pcicptr)
+{
+	if (bus->parent == NULL &&
+	    devfn >= PCI_DEVFN(TX4927_PCIC_MAX_DEVNU, 0))
+		return -1;
+	__raw_writel(((bus->number & 0xff) << 0x10)
+		     | ((devfn & 0xff) << 0x08) | (where & 0xfc)
+		     | (bus->parent ? 1 : 0),
+		     &pcicptr->g2pcfgadrs);
 	/* clear M_ABORT and Disable M_ABORT Int. */
-	tx4927_pcicptr->pcistatus =
-	    (tx4927_pcicptr->pcistatus & 0x0000ffff) |
-	    (PCI_STATUS_REC_MASTER_ABORT << 16);
-	tx4927_pcicptr->pcimask &= ~PCI_STATUS_REC_MASTER_ABORT;
+	__raw_writel((__raw_readl(&pcicptr->pcistatus) & 0x0000ffff)
+		     | (PCI_STATUS_REC_MASTER_ABORT << 16),
+		     &pcicptr->pcistatus);
 	return 0;
 }
 
-static int check_abort(int flags)
+static int check_abort(struct tx4927_pcic_reg __iomem *pcicptr)
 {
 	int code = PCIBIOS_SUCCESSFUL;
-	if (tx4927_pcicptr->
-	    pcistatus & (PCI_STATUS_REC_MASTER_ABORT << 16)) {
-		tx4927_pcicptr->pcistatus =
-		    (tx4927_pcicptr->
-		     pcistatus & 0x0000ffff) | (PCI_STATUS_REC_MASTER_ABORT
-						<< 16);
-		tx4927_pcicptr->pcimask |= PCI_STATUS_REC_MASTER_ABORT;
+
+	/* wait write cycle completion before checking error status */
+	while (__raw_readl(&pcicptr->pcicstatus) & TX4927_PCIC_PCICSTATUS_IWB)
+		;
+	if (__raw_readl(&pcicptr->pcistatus)
+	    & (PCI_STATUS_REC_MASTER_ABORT << 16)) {
+		__raw_writel((__raw_readl(&pcicptr->pcistatus) & 0x0000ffff)
+			     | (PCI_STATUS_REC_MASTER_ABORT << 16),
+			     &pcicptr->pcistatus);
 		code = PCIBIOS_DEVICE_NOT_FOUND;
 	}
 	return code;
 }
 
-static int tx4927_pcibios_read_config(struct pci_bus *bus, unsigned int devfn, int where,
-		int size, u32 * val)
+static u8 icd_readb(int offset, struct tx4927_pcic_reg __iomem *pcicptr)
+{
+#ifdef __BIG_ENDIAN
+	offset ^= 3;
+#endif
+	return __raw_readb((void __iomem *)&pcicptr->g2pcfgdata + offset);
+}
+static u16 icd_readw(int offset, struct tx4927_pcic_reg __iomem *pcicptr)
+{
+#ifdef __BIG_ENDIAN
+	offset ^= 2;
+#endif
+	return __raw_readw((void __iomem *)&pcicptr->g2pcfgdata + offset);
+}
+static u32 icd_readl(struct tx4927_pcic_reg __iomem *pcicptr)
+{
+	return __raw_readl(&pcicptr->g2pcfgdata);
+}
+static void icd_writeb(u8 val, int offset,
+		       struct tx4927_pcic_reg __iomem *pcicptr)
+{
+#ifdef __BIG_ENDIAN
+	offset ^= 3;
+#endif
+	__raw_writeb(val, (void __iomem *)&pcicptr->g2pcfgdata + offset);
+}
+static void icd_writew(u16 val, int offset,
+		       struct tx4927_pcic_reg __iomem *pcicptr)
+{
+#ifdef __BIG_ENDIAN
+	offset ^= 2;
+#endif
+	__raw_writew(val, (void __iomem *)&pcicptr->g2pcfgdata + offset);
+}
+static void icd_writel(u32 val, struct tx4927_pcic_reg __iomem *pcicptr)
 {
-	int flags, retval, dev, busno, func;
+	__raw_writel(val, &pcicptr->g2pcfgdata);
+}
 
-	busno = bus->number;
-        dev = PCI_SLOT(devfn);
-        func = PCI_FUNC(devfn);
+static struct tx4927_pcic_reg __iomem *pci_bus_to_pcicptr(struct pci_bus *bus)
+{
+	struct pci_controller *channel = bus->sysdata;
+	return get_tx4927_pcicptr(channel);
+}
 
-	/* check if the bus is top-level */
-	if (bus->parent != NULL) {
-		busno = bus->number;
-	} else {
-		busno = 0;
-	}
+static int tx4927_pci_config_read(struct pci_bus *bus, unsigned int devfn,
+				  int where, int size, u32 *val)
+{
+	struct tx4927_pcic_reg __iomem *pcicptr = pci_bus_to_pcicptr(bus);
 
-	if (mkaddr(busno, devfn, where, &flags))
+	if (mkaddr(bus, devfn, where, pcicptr)) {
+		*val = 0xffffffff;
 		return -1;
-
+	}
 	switch (size) {
 	case 1:
-		*val = *(volatile u8 *) ((unsigned long) & tx4927_pcicptr->
-                              g2pcfgdata |
-#ifdef __LITTLE_ENDIAN
-						(where & 3));
-#else
-						((where & 0x3) ^ 0x3));
-#endif
+		*val = icd_readb(where & 3, pcicptr);
 		break;
 	case 2:
-		*val = *(volatile u16 *) ((unsigned long) & tx4927_pcicptr->
-                               g2pcfgdata |
-#ifdef __LITTLE_ENDIAN
-						(where & 3));
-#else
-						((where & 0x3) ^ 0x2));
-#endif
-		break;
-	case 4:
-		*val = tx4927_pcicptr->g2pcfgdata;
+		*val = icd_readw(where & 3, pcicptr);
 		break;
+	default:
+		*val = icd_readl(pcicptr);
 	}
+	return check_abort(pcicptr);
+}
 
-	retval = check_abort(flags);
-	if (retval == PCIBIOS_DEVICE_NOT_FOUND)
-		*val = 0xffffffff;
+static int tx4927_pci_config_write(struct pci_bus *bus, unsigned int devfn,
+				   int where, int size, u32 val)
+{
+	struct tx4927_pcic_reg __iomem *pcicptr = pci_bus_to_pcicptr(bus);
 
-	return retval;
+	if (mkaddr(bus, devfn, where, pcicptr))
+		return -1;
+	switch (size) {
+	case 1:
+		icd_writeb(val, where & 3, pcicptr);
+		break;
+	case 2:
+		icd_writew(val, where & 3, pcicptr);
+		break;
+	default:
+		icd_writel(val, pcicptr);
+	}
+	return check_abort(pcicptr);
 }
 
-static int tx4927_pcibios_write_config(struct pci_bus *bus, unsigned int devfn, int where,
-				int size, u32 val)
+static struct pci_ops tx4927_pci_ops = {
+	.read = tx4927_pci_config_read,
+	.write = tx4927_pci_config_write,
+};
+
+static struct {
+	u8 trdyto;
+	u8 retryto;
+	u16 gbwc;
+} tx4927_pci_opts __devinitdata = {
+	.trdyto = 0,
+	.retryto = 0,
+	.gbwc = 0xfe0,	/* 4064 GBUSCLK for CCFG.GTOT=0b11 */
+};
+
+void __init tx4927_pcic_setup(struct tx4927_pcic_reg __iomem *pcicptr,
+			      struct pci_controller *channel, int extarb)
 {
-	int flags, dev, busno, func;
-	busno = bus->number;
-        dev = PCI_SLOT(devfn);
-        func = PCI_FUNC(devfn);
+	int i;
+	unsigned long flags;
 
-	/* check if the bus is top-level */
-	if (bus->parent != NULL) {
-		busno = bus->number;
-	} else {
-		busno = 0;
-	}
+	set_tx4927_pcicptr(channel, pcicptr);
 
-	if (mkaddr(busno, devfn, where, &flags))
-		return -1;
+	if (!channel->pci_ops)
+		printk(KERN_INFO
+		       "PCIC -- DID:%04x VID:%04x RID:%02x Arbiter:%s\n",
+		       __raw_readl(&pcicptr->pciid) >> 16,
+		       __raw_readl(&pcicptr->pciid) & 0xffff,
+		       __raw_readl(&pcicptr->pciccrev) & 0xff,
+			extarb ? "External" : "Internal");
+	channel->pci_ops = &tx4927_pci_ops;
 
-	switch (size) {
-	case 1:
-		 *(volatile u8 *) ((unsigned long) & tx4927_pcicptr->
-                          g2pcfgdata |
-#ifdef __LITTLE_ENDIAN
-					(where & 3)) = val;
+	local_irq_save(flags);
+
+	/* Disable All Initiator Space */
+	__raw_writel(__raw_readl(&pcicptr->pciccfg)
+		     & ~(TX4927_PCIC_PCICCFG_G2PMEN(0)
+			 | TX4927_PCIC_PCICCFG_G2PMEN(1)
+			 | TX4927_PCIC_PCICCFG_G2PMEN(2)
+			 | TX4927_PCIC_PCICCFG_G2PIOEN),
+		     &pcicptr->pciccfg);
+
+	/* GB->PCI mappings */
+	__raw_writel((channel->io_resource->end - channel->io_resource->start)
+		     >> 4,
+		     &pcicptr->g2piomask);
+	____raw_writeq((channel->io_resource->start +
+			channel->io_map_base - IO_BASE) |
+#ifdef __BIG_ENDIAN
+		       TX4927_PCIC_G2PIOGBASE_ECHG
 #else
-					((where & 0x3) ^ 0x3)) = val;
+		       TX4927_PCIC_G2PIOGBASE_BSDIS
 #endif
-		break;
-
-	case 2:
-		*(volatile u16 *) ((unsigned long) & tx4927_pcicptr->
-                           g2pcfgdata |
-#ifdef __LITTLE_ENDIAN
-					(where & 3)) = val;
+		       , &pcicptr->g2piogbase);
+	____raw_writeq(channel->io_resource->start - channel->io_offset,
+		       &pcicptr->g2piopbase);
+	for (i = 0; i < 3; i++) {
+		__raw_writel(0, &pcicptr->g2pmmask[i]);
+		____raw_writeq(0, &pcicptr->g2pmgbase[i]);
+		____raw_writeq(0, &pcicptr->g2pmpbase[i]);
+	}
+	if (channel->mem_resource->end) {
+		__raw_writel((channel->mem_resource->end
+			      - channel->mem_resource->start) >> 4,
+			     &pcicptr->g2pmmask[0]);
+		____raw_writeq(channel->mem_resource->start |
+#ifdef __BIG_ENDIAN
+			       TX4927_PCIC_G2PMnGBASE_ECHG
 #else
-					((where & 0x3) ^ 0x2)) = val;
+			       TX4927_PCIC_G2PMnGBASE_BSDIS
 #endif
-		break;
-	case 4:
-		tx4927_pcicptr->g2pcfgdata = val;
-		break;
+			       , &pcicptr->g2pmgbase[0]);
+		____raw_writeq(channel->mem_resource->start -
+			       channel->mem_offset,
+			       &pcicptr->g2pmpbase[0]);
+	}
+	/* PCI->GB mappings (I/O 256B) */
+	__raw_writel(0, &pcicptr->p2giopbase); /* 256B */
+	____raw_writeq(0, &pcicptr->p2giogbase);
+	/* PCI->GB mappings (MEM 512MB (64MB on R1.x)) */
+	__raw_writel(0, &pcicptr->p2gm0plbase);
+	__raw_writel(0, &pcicptr->p2gm0pubase);
+	____raw_writeq(TX4927_PCIC_P2GMnGBASE_TMEMEN |
+#ifdef __BIG_ENDIAN
+		       TX4927_PCIC_P2GMnGBASE_TECHG
+#else
+		       TX4927_PCIC_P2GMnGBASE_TBSDIS
+#endif
+		       , &pcicptr->p2gmgbase[0]);
+	/* PCI->GB mappings (MEM 16MB) */
+	__raw_writel(0xffffffff, &pcicptr->p2gm1plbase);
+	__raw_writel(0xffffffff, &pcicptr->p2gm1pubase);
+	____raw_writeq(0, &pcicptr->p2gmgbase[1]);
+	/* PCI->GB mappings (MEM 1MB) */
+	__raw_writel(0xffffffff, &pcicptr->p2gm2pbase); /* 1MB */
+	____raw_writeq(0, &pcicptr->p2gmgbase[2]);
+
+	/* Clear all (including IRBER) except for GBWC */
+	__raw_writel((tx4927_pci_opts.gbwc << 16)
+		     & TX4927_PCIC_PCICCFG_GBWC_MASK,
+		     &pcicptr->pciccfg);
+	/* Enable Initiator Memory Space */
+	if (channel->mem_resource->end)
+		__raw_writel(__raw_readl(&pcicptr->pciccfg)
+			     | TX4927_PCIC_PCICCFG_G2PMEN(0),
+			     &pcicptr->pciccfg);
+	/* Enable Initiator I/O Space */
+	if (channel->io_resource->end)
+		__raw_writel(__raw_readl(&pcicptr->pciccfg)
+			     | TX4927_PCIC_PCICCFG_G2PIOEN,
+			     &pcicptr->pciccfg);
+	/* Enable Initiator Config */
+	__raw_writel(__raw_readl(&pcicptr->pciccfg)
+		     | TX4927_PCIC_PCICCFG_ICAEN | TX4927_PCIC_PCICCFG_TCAR,
+		     &pcicptr->pciccfg);
+
+	/* Do not use MEMMUL, MEMINF: YMFPCI card causes M_ABORT. */
+	__raw_writel(0, &pcicptr->pcicfg1);
+
+	__raw_writel((__raw_readl(&pcicptr->g2ptocnt) & ~0xffff)
+		     | (tx4927_pci_opts.trdyto & 0xff)
+		     | ((tx4927_pci_opts.retryto & 0xff) << 8),
+		     &pcicptr->g2ptocnt);
+
+	/* Clear All Local Bus Status */
+	__raw_writel(TX4927_PCIC_PCICSTATUS_ALL, &pcicptr->pcicstatus);
+	/* Enable All Local Bus Interrupts */
+	__raw_writel(TX4927_PCIC_PCICSTATUS_ALL, &pcicptr->pcicmask);
+	/* Clear All Initiator Status */
+	__raw_writel(TX4927_PCIC_G2PSTATUS_ALL, &pcicptr->g2pstatus);
+	/* Enable All Initiator Interrupts */
+	__raw_writel(TX4927_PCIC_G2PSTATUS_ALL, &pcicptr->g2pmask);
+	/* Clear All PCI Status Error */
+	__raw_writel((__raw_readl(&pcicptr->pcistatus) & 0x0000ffff)
+		     | (TX4927_PCIC_PCISTATUS_ALL <<