diff options
Diffstat (limited to 'arch/mips/pci')
| -rw-r--r-- | arch/mips/pci/Makefile | 1 | ||||
| -rw-r--r-- | arch/mips/pci/fixup-emma2rh.c | 102 | ||||
| -rw-r--r-- | arch/mips/pci/ops-emma2rh.c | 186 | ||||
| -rw-r--r-- | arch/mips/pci/pci-emma2rh.c | 90 |
4 files changed, 379 insertions, 0 deletions
diff --git a/arch/mips/pci/Makefile b/arch/mips/pci/Makefile index c5f5516f4695..56000a069604 100644 --- a/arch/mips/pci/Makefile +++ b/arch/mips/pci/Makefile @@ -18,6 +18,7 @@ obj-$(CONFIG_MIPS_NILE4) += ops-nile4.o obj-$(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 # # These are still pretty much in the old state, watch, go blind. diff --git a/arch/mips/pci/fixup-emma2rh.c b/arch/mips/pci/fixup-emma2rh.c new file mode 100644 index 000000000000..3a34cd0efd6b --- /dev/null +++ b/arch/mips/pci/fixup-emma2rh.c @@ -0,0 +1,102 @@ +/* + * arch/mips/pci/fixup-emma2rh.c + * This file defines the PCI configration. + * + * Copyright (C) NEC Electronics Corporation 2004-2006 + * + * This file is based on the arch/mips/ddb5xxx/ddb5477/pci.c + * + * Copyright 2001 MontaVista Software Inc. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/config.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/types.h> +#include <linux/pci.h> + +#include <asm/bootinfo.h> +#include <asm/debug.h> + +#include <asm/emma2rh/emma2rh.h> + +#define EMMA2RH_PCI_HOST_SLOT 0x09 +#define EMMA2RH_USB_SLOT 0x03 +#define PCI_DEVICE_ID_NEC_EMMA2RH 0x014b /* EMMA2RH PCI Host */ + +/* + * we fix up irqs based on the slot number. + * The first entry is at AD:11. + * Fortunately this works because, although we have two pci buses, + * they all have different slot numbers (except for rockhopper slot 20 + * which is handled below). + * + */ + +#define MAX_SLOT_NUM 10 +static unsigned char irq_map[][5] __initdata = { + [3] = {0, MARKEINS_PCI_IRQ_INTB, MARKEINS_PCI_IRQ_INTC, + MARKEINS_PCI_IRQ_INTD, 0,}, + [4] = {0, MARKEINS_PCI_IRQ_INTA, 0, 0, 0,}, + [5] = {0, 0, 0, 0, 0,}, + [6] = {0, MARKEINS_PCI_IRQ_INTC, MARKEINS_PCI_IRQ_INTD, + MARKEINS_PCI_IRQ_INTA, MARKEINS_PCI_IRQ_INTB,}, +}; + +static void __devinit nec_usb_controller_fixup(struct pci_dev *dev) +{ + if (PCI_SLOT(dev->devfn) == EMMA2RH_USB_SLOT) + /* on board USB controller configuration */ + pci_write_config_dword(dev, 0xe4, 1 << 5); +} + +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB, + nec_usb_controller_fixup); + +/* + * Prevent the PCI layer from seeing the resources allocated to this device + * if it is the host bridge by marking it as such. These resources are of + * no consequence to the PCI layer (they are handled elsewhere). + */ +static void __devinit emma2rh_pci_host_fixup(struct pci_dev *dev) +{ + int i; + + if (PCI_SLOT(dev->devfn) == EMMA2RH_PCI_HOST_SLOT) { + dev->class &= 0xff; + dev->class |= PCI_CLASS_BRIDGE_HOST << 8; + for (i = 0; i < PCI_NUM_RESOURCES; i++) { + dev->resource[i].start = 0; + dev->resource[i].end = 0; + dev->resource[i].flags = 0; + } + } +} + +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_EMMA2RH, + emma2rh_pci_host_fixup); + +int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +{ + return irq_map[slot][pin]; +} + +/* 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-emma2rh.c b/arch/mips/pci/ops-emma2rh.c new file mode 100644 index 000000000000..e21b11bf66bc --- /dev/null +++ b/arch/mips/pci/ops-emma2rh.c @@ -0,0 +1,186 @@ +/* + * arch/mips/pci/ops-emma2rh.c + * This file defines the PCI operation for EMMA2RH. + * + * Copyright (C) NEC Electronics Corporation 2004-2006 + * + * This file is based on the arch/mips/pci/ops-vr41xx.c + * + * Copyright 2001 MontaVista Software Inc. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/config.h> +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/types.h> + +#include <asm/addrspace.h> +#include <asm/debug.h> + +#include <asm/emma2rh/emma2rh.h> + +#define RTABORT (0x1<<9) +#define RMABORT (0x1<<10) +#define EMMA2RH_PCI_SLOT_NUM 9 /* 0000:09.0 is final PCI device */ + +/* + * access config space + */ + +static int check_args(struct pci_bus *bus, u32 devfn, u32 * bus_num) +{ + /* check if the bus is top-level */ + if (bus->parent != NULL) { + *bus_num = bus->number; + db_assert(bus_num != 0); + } else + *bus_num = 0; + + if (*bus_num == 0) { + /* Type 0 */ + if (PCI_SLOT(devfn) >= 10) + return PCIBIOS_DEVICE_NOT_FOUND; + } else { + /* Type 1 */ + if ((*bus_num >= 64) || (PCI_SLOT(devfn) >= 16)) + return PCIBIOS_DEVICE_NOT_FOUND; + } + return 0; +} + +static inline int set_pci_configuration_address(unsigned char bus_num, + unsigned int devfn, int where) +{ + u32 config_win0; + + emma2rh_out32(EMMA2RH_PCI_INT, ~RMABORT); + if (bus_num == 0) + /* + * Type 0 configuration + */ + config_win0 = (1 << (22 + PCI_SLOT(devfn))) | (5 << 9); + else + /* + * Type 1 configuration + */ + config_win0 = (bus_num << 26) | (PCI_SLOT(devfn) << 22) | + (1 << 15) | (5 << 9); + + emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, config_win0); + + return 0; +} + +static int pci_config_read(struct pci_bus *bus, unsigned int devfn, int where, + int size, uint32_t * val) +{ + u32 bus_num; + u32 base = KSEG1ADDR(EMMA2RH_PCI_CONFIG_BASE); + u32 backup_win0; + u32 data; + + *val = 0xffffffffU; + + if (check_args(bus, devfn, &bus_num) == PCIBIOS_DEVICE_NOT_FOUND) + return PCIBIOS_DEVICE_NOT_FOUND; + + backup_win0 = emma2rh_in32(EMMA2RH_PCI_IWIN0_CTR); + + if (set_pci_configuration_address(bus_num, devfn, where) < 0) + return PCIBIOS_DEVICE_NOT_FOUND; + + data = + *(volatile u32 *)(base + (PCI_FUNC(devfn) << 8) + + (where & 0xfffffffc)); + + switch (size) { + case 1: + *val = (data >> ((where & 3) << 3)) & 0xffU; + break; + case 2: + *val = (data >> ((where & 2) << 3)) & 0xffffU; + break; + case 4: + *val = data; + break; + default: + emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, backup_win0); + return PCIBIOS_FUNC_NOT_SUPPORTED; + } + + emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, backup_win0); + + if (emma2rh_in32(EMMA2RH_PCI_INT) & RMABORT) + return PCIBIOS_DEVICE_NOT_FOUND; + + return PCIBIOS_SUCCESSFUL; +} + +static int pci_config_write(struct pci_bus *bus, unsigned int devfn, int where, + int size, u32 val) +{ + u32 bus_num; + u32 base = KSEG1ADDR(EMMA2RH_PCI_CONFIG_BASE); + u32 backup_win0; + u32 data; + int shift; + + if (check_args(bus, devfn, &bus_num) == PCIBIOS_DEVICE_NOT_FOUND) + return PCIBIOS_DEVICE_NOT_FOUND; + + backup_win0 = emma2rh_in32(EMMA2RH_PCI_IWIN0_CTR); + + if (set_pci_configuration_address(bus_num, devfn, where) < 0) + return PCIBIOS_DEVICE_NOT_FOUND; + + /* read modify write */ + data = + *(volatile u32 *)(base + (PCI_FUNC(devfn) << 8) + + (where & 0xfffffffc)); + + switch (size) { + case 1: + shift = (where & 3) << 3; + data &= ~(0xffU << shift); + data |= ((val & 0xffU) << shift); + break; + case 2: + shift = (where & 2) << 3; + data &= ~(0xffffU << shift); + data |= ((val & 0xffffU) << shift); + break; + case 4: + data = val; + break; + default: + emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, backup_win0); + return PCIBIOS_FUNC_NOT_SUPPORTED; + } + *(volatile u32 *)(base + (PCI_FUNC(devfn) << 8) + + (where & 0xfffffffc)) = data; + + emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, backup_win0); + if (emma2rh_in32(EMMA2RH_PCI_INT) & RMABORT) + return PCIBIOS_DEVICE_NOT_FOUND; + + return PCIBIOS_SUCCESSFUL; +} + +struct pci_ops emma2rh_pci_ops = { + .read = pci_config_read, + .write = pci_config_write, +}; diff --git a/arch/mips/pci/pci-emma2rh.c b/arch/mips/pci/pci-emma2rh.c new file mode 100644 index 000000000000..0f8b230057d3 --- /dev/null +++ b/arch/mips/pci/pci-emma2rh.c @@ -0,0 +1,90 @@ +/* + * arch/mips/pci/pci-emma2rh.c + * This file defines the PCI configration. + * + * Copyright (C) NEC Electronics Corporation 2004-2006 + * + * This file is based on the arch/mips/ddb5xxx/ddb5477/pci.c + * + * Copyright 2001 MontaVista Software Inc. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/config.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/types.h> +#include <linux/pci.h> + +#include <asm/bootinfo.h> +#include <asm/debug.h> + +#include <asm/emma2rh/emma2rh.h> + +static struct resource pci_io_resource = { + .name = "pci IO space", + .start = EMMA2RH_PCI_IO_BASE, + .end = EMMA2RH_PCI_IO_BASE + EMMA2RH_PCI_IO_SIZE - 1, + .flags = IORESOURCE_IO, +}; + +static struct resource pci_mem_resource = { + .name = "pci memory space", + .start = EMMA2RH_PCI_MEM_BASE, + .end = EMMA2RH_PCI_MEM_BASE + EMMA2RH_PCI_MEM_SIZE - 1, + .flags = IORESOURCE_MEM, +}; + +extern struct pci_ops emma2rh_pci_ops; + +static struct pci_controller emma2rh_pci_controller = { + .pci_ops = &emma2rh_pci_ops, + .mem_resource = &pci_mem_resource, + .io_resource = &pci_io_resource, + .mem_offset = -0x04000000, + .io_offset = 0, +}; + +static void __init emma2rh_pci_init(void) +{ + /* setup PCI interface */ + emma2rh_out32(EMMA2RH_PCI_ARBIT_CTR, 0x70f); + + emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, 0x80000a18); + emma2rh_out32(EMMA2RH_PCI_CONFIG_BASE + PCI_COMMAND, + PCI_STATUS_DEVSEL_MEDIUM | PCI_STATUS_CAP_LIST | + PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY); + emma2rh_out32(EMMA2RH_PCI_CONFIG_BASE + PCI_BASE_ADDRESS_0, 0x10000000); + emma2rh_out32(EMMA2RH_PCI_CONFIG_BASE + PCI_BASE_ADDRESS_1, 0x00000000); + + emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, 0x12000000 | 0x218); + emma2rh_out32(EMMA2RH_PCI_IWIN1_CTR, 0x18000000 | 0x600); + emma2rh_out32(EMMA2RH_PCI_INIT_ESWP, 0x00000200); + + emma2rh_out32(EMMA2RH_PCI_TWIN_CTR, 0x00009200); + emma2rh_out32(EMMA2RH_PCI_TWIN_BADR, 0x00000000); + emma2rh_out32(EMMA2RH_PCI_TWIN0_DADR, 0x00000000); + emma2rh_out32(EMMA2RH_PCI_TWIN1_DADR, 0x00000000); +} + +static int __init emma2rh_pci_setup(void) +{ + emma2rh_pci_init(); + register_pci_controller(&emma2rh_pci_controller); + return 0; +} + +arch_initcall(emma2rh_pci_setup); |