Support for Toshiba's RBHMA4500 eval board for the TX4938.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/pci/Makefile b/arch/mips/pci/Makefile
index ea8438b..6956de95 100644
--- a/arch/mips/pci/Makefile
+++ b/arch/mips/pci/Makefile
@@ -52,5 +52,6 @@
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-tx4938.o ops-tx4938.o
obj-$(CONFIG_VICTOR_MPC30X) += fixup-mpc30x.o
obj-$(CONFIG_ZAO_CAPCELLA) += fixup-capcella.o
diff --git a/arch/mips/pci/fixup-tx4938.c b/arch/mips/pci/fixup-tx4938.c
new file mode 100644
index 0000000..f455520
--- /dev/null
+++ b/arch/mips/pci/fixup-tx4938.c
@@ -0,0 +1,92 @@
+/*
+ * Toshiba rbtx4938 pci routines
+ * Copyright (C) 2000-2001 Toshiba Corporation
+ *
+ * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
+ * terms of the GNU General Public License version 2. This program is
+ * licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ *
+ * 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/tx4938/rbtx4938.h>
+
+extern struct pci_controller tx4938_pci_controller[];
+
+int pci_get_irq(struct pci_dev *dev, int 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;
+ }
+
+ /* IRQ rotation */
+ irq--; /* 0-3 */
+ if (dev->bus->parent == NULL &&
+ (slot == TX4938_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;
+ }
+ irq++; /* 1-4 */
+
+ switch (irq) {
+ case 1:
+ irq = RBTX4938_IRQ_IOC_PCIA;
+ break;
+ case 2:
+ irq = RBTX4938_IRQ_IOC_PCIB;
+ break;
+ case 3:
+ irq = RBTX4938_IRQ_IOC_PCIC;
+ break;
+ case 4:
+ irq = RBTX4938_IRQ_IOC_PCID;
+ break;
+ }
+ return irq;
+}
+
+int __init pcibios_map_irq(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
+ */
+int pcibios_plat_dev_init(struct pci_dev *dev)
+{
+ return 0;
+}
+
diff --git a/arch/mips/pci/ops-tx4938.c b/arch/mips/pci/ops-tx4938.c
new file mode 100644
index 0000000..4c0dcfc
--- /dev/null
+++ b/arch/mips/pci/ops-tx4938.c
@@ -0,0 +1,198 @@
+/*
+ * Define the pci_ops for the Toshiba rbtx4938
+ * Copyright (C) 2000-2001 Toshiba Corporation
+ *
+ * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
+ * terms of the GNU General Public License version 2. This program is
+ * licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ *
+ * 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/addrspace.h>
+#include <asm/tx4938/rbtx4938.h>
+
+/* initialize in setup */
+struct resource pci_io_resource = {
+ .name = "pci IO space",
+ .start = 0,
+ .end = 0,
+ .flags = IORESOURCE_IO
+};
+
+/* initialize in setup */
+struct resource pci_mem_resource = {
+ .name = "pci memory space",
+ .start = 0,
+ .end = 0,
+ .flags = IORESOURCE_MEM
+};
+
+struct resource tx4938_pcic1_pci_io_resource = {
+ .name = "PCI1 IO",
+ .start = 0,
+ .end = 0,
+ .flags = IORESOURCE_IO
+};
+struct resource tx4938_pcic1_pci_mem_resource = {
+ .name = "PCI1 mem",
+ .start = 0,
+ .end = 0,
+ .flags = IORESOURCE_MEM
+};
+
+static int mkaddr(int bus, int dev_fn, int where, int *flagsp)
+{
+ if (bus > 0) {
+ /* Type 1 configuration */
+ tx4938_pcicptr->g2pcfgadrs = ((bus & 0xff) << 0x10) |
+ ((dev_fn & 0xff) << 0x08) | (where & 0xfc) | 1;
+ } else {
+ if (dev_fn >= PCI_DEVFN(TX4938_PCIC_MAX_DEVNU, 0))
+ return -1;
+
+ /* Type 0 configuration */
+ tx4938_pcicptr->g2pcfgadrs = ((bus & 0xff) << 0x10) |
+ ((dev_fn & 0xff) << 0x08) | (where & 0xfc);
+ }
+ /* clear M_ABORT and Disable M_ABORT Int. */
+ tx4938_pcicptr->pcistatus =
+ (tx4938_pcicptr->pcistatus & 0x0000ffff) |
+ (PCI_STATUS_REC_MASTER_ABORT << 16);
+ tx4938_pcicptr->pcimask &= ~PCI_STATUS_REC_MASTER_ABORT;
+
+ return 0;
+}
+
+static int check_abort(int flags)
+{
+ int code = PCIBIOS_SUCCESSFUL;
+ /* wait write cycle completion before checking error status */
+ while (tx4938_pcicptr->pcicstatus & TX4938_PCIC_PCICSTATUS_IWB)
+ ;
+ if (tx4938_pcicptr->pcistatus & (PCI_STATUS_REC_MASTER_ABORT << 16)) {
+ tx4938_pcicptr->pcistatus =
+ (tx4938_pcicptr->
+ pcistatus & 0x0000ffff) | (PCI_STATUS_REC_MASTER_ABORT
+ << 16);
+ tx4938_pcicptr->pcimask |= PCI_STATUS_REC_MASTER_ABORT;
+ code = PCIBIOS_DEVICE_NOT_FOUND;
+ }
+ return code;
+}
+
+static int tx4938_pcibios_read_config(struct pci_bus *bus, unsigned int devfn,
+ int where, int size, u32 * val)
+{
+ int flags, retval, dev, busno, func;
+
+ dev = PCI_SLOT(devfn);
+ func = PCI_FUNC(devfn);
+
+ /* check if the bus is top-level */
+ if (bus->parent != NULL)
+ busno = bus->number;
+ else {
+ busno = 0;
+ }
+
+ if (mkaddr(busno, devfn, where, &flags))
+ return -1;
+
+ switch (size) {
+ case 1:
+ *val = *(volatile u8 *) ((ulong) & tx4938_pcicptr->g2pcfgdata |
+#ifdef __BIG_ENDIAN
+ ((where & 3) ^ 3));
+#else
+ (where & 3));
+#endif
+ break;
+ case 2:
+ *val = *(volatile u16 *) ((ulong) & tx4938_pcicptr->g2pcfgdata |
+#ifdef __BIG_ENDIAN
+ ((where & 3) ^ 2));
+#else
+ (where & 3));
+#endif
+ break;
+ case 4:
+ *val = tx4938_pcicptr->g2pcfgdata;
+ break;
+ }
+
+ retval = check_abort(flags);
+ if (retval == PCIBIOS_DEVICE_NOT_FOUND)
+ *val = 0xffffffff;
+
+ return retval;
+}
+
+static int tx4938_pcibios_write_config(struct pci_bus *bus, unsigned int devfn, int where,
+ int size, u32 val)
+{
+ int flags, dev, busno, func;
+
+ busno = bus->number;
+ dev = PCI_SLOT(devfn);
+ func = PCI_FUNC(devfn);
+
+ /* check if the bus is top-level */
+ if (bus->parent != NULL) {
+ busno = bus->number;
+ } else {
+ busno = 0;
+ }
+
+ if (mkaddr(busno, devfn, where, &flags))
+ return -1;
+
+ switch (size) {
+ case 1:
+ *(volatile u8 *) ((ulong) & tx4938_pcicptr->g2pcfgdata |
+#ifdef __BIG_ENDIAN
+ ((where & 3) ^ 3)) = val;
+#else
+ (where & 3)) = val;
+#endif
+ break;
+ case 2:
+ *(volatile u16 *) ((ulong) & tx4938_pcicptr->g2pcfgdata |
+#ifdef __BIG_ENDIAN
+ ((where & 0x3) ^ 0x2)) = val;
+#else
+ (where & 3)) = val;
+#endif
+ break;
+ case 4:
+ tx4938_pcicptr->g2pcfgdata = val;
+ break;
+ }
+
+ return check_abort(flags);
+}
+
+struct pci_ops tx4938_pci_ops = {
+ tx4938_pcibios_read_config,
+ tx4938_pcibios_write_config
+};
+
+struct pci_controller tx4938_pci_controller[] = {
+ /* h/w only supports devices 0x00 to 0x14 */
+ {
+ .pci_ops = &tx4938_pci_ops,
+ .io_resource = &pci_io_resource,
+ .mem_resource = &pci_mem_resource,
+ },
+ /* h/w only supports devices 0x00 to 0x14 */
+ {
+ .pci_ops = &tx4938_pci_ops,
+ .io_resource = &tx4938_pcic1_pci_io_resource,
+ .mem_resource = &tx4938_pcic1_pci_mem_resource,
+ }
+};