diff options
Diffstat (limited to 'target/linux/adm5120-2.6/files/arch/mips/pci')
| -rw-r--r-- | target/linux/adm5120-2.6/files/arch/mips/pci/ops-adm5120.c | 59 | ||||
| -rw-r--r-- | target/linux/adm5120-2.6/files/arch/mips/pci/pci-adm5120.c | 93 |
2 files changed, 152 insertions, 0 deletions
diff --git a/target/linux/adm5120-2.6/files/arch/mips/pci/ops-adm5120.c b/target/linux/adm5120-2.6/files/arch/mips/pci/ops-adm5120.c new file mode 100644 index 000000000..80b8531ea --- /dev/null +++ b/target/linux/adm5120-2.6/files/arch/mips/pci/ops-adm5120.c @@ -0,0 +1,59 @@ +/* + * Copyright (C) ADMtek Incorporated. + * Copyright (C) 2005 Jeroen Vreeken (pe1rxq@amsat.org) + */ + +#include <linux/autoconf.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/init.h> + +volatile u32* pci_config_address_reg = (volatile u32*)KSEG1ADDR(0x115ffff0); +volatile u32* pci_config_data_reg = (volatile u32*)KSEG1ADDR(0x115ffff8); + +#define PCI_ENABLE 0x80000000 + +static int pci_config_read(struct pci_bus *bus, unsigned int devfn, int where, + int size, uint32_t *val) +{ + *pci_config_address_reg = ((bus->number & 0xff) << 0x10) | + ((devfn & 0xff) << 0x08) | (where & 0xfc) | PCI_ENABLE; + switch (size) { + case 1: + *val = ((*pci_config_data_reg)>>((where&3)<<3))&0xff; + break; + case 2: + *val = ((*pci_config_data_reg)>>((where&3)<<3))&0xffff; + break; + default: + *val = (*pci_config_data_reg); + } + return PCIBIOS_SUCCESSFUL; +} + +static int pci_config_write(struct pci_bus *bus, unsigned int devfn, int where, + int size, uint32_t val) +{ + *pci_config_address_reg = ((bus->number & 0xff) << 0x10) | + ((devfn & 0xff) << 0x08) | (where & 0xfc) | PCI_ENABLE; + switch (size) { + case 1: + *(volatile u8 *)(((int)pci_config_data_reg) + + (where & 3)) = val; + break; + case 2: + *(volatile u16 *)(((int)pci_config_data_reg) + + (where & 2)) = (val); + break; + default: + *pci_config_data_reg = (val); + } + + return PCIBIOS_SUCCESSFUL; +} + +struct pci_ops adm5120_pci_ops = { + .read = pci_config_read, + .write = pci_config_write, +}; diff --git a/target/linux/adm5120-2.6/files/arch/mips/pci/pci-adm5120.c b/target/linux/adm5120-2.6/files/arch/mips/pci/pci-adm5120.c new file mode 100644 index 000000000..a8585747e --- /dev/null +++ b/target/linux/adm5120-2.6/files/arch/mips/pci/pci-adm5120.c @@ -0,0 +1,93 @@ +/* + * Copyright (C) ADMtek Incorporated. + * Copyright (C) 2005 Jeroen Vreeken (pe1rxq@amsat.org) + */ + +#include <linux/autoconf.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/init.h> + +extern struct pci_ops adm5120_pci_ops; + +#define ADM5120_CODE 0x12000000 +#define ADM5120_CODE_PQFP 0x20000000 + +#define PCI_CMM_IOACC_EN 0x1 +#define PCI_CMM_MEMACC_EN 0x2 +#define PCI_CMM_MASTER_EN 0x4 +#define PCI_CMM_DEF \ + (PCI_CMM_IOACC_EN | PCI_CMM_MEMACC_EN | PCI_CMM_MASTER_EN) + +#define PCI_DEF_CACHE_LINE_SZ 4 + + +struct resource pci_io_resource = { + "PCI IO space", + 0x11500000, + 0x115ffff0-1, + IORESOURCE_IO +}; + +struct resource pci_mem_resource = { + "PCI memory space", + 0x11400000, + 0x11500000, + IORESOURCE_MEM +}; + +static struct pci_controller adm5120_controller = { + .pci_ops = &adm5120_pci_ops, + .io_resource = &pci_io_resource, + .mem_resource = &pci_mem_resource, +}; + +int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +{ + if (slot < 2 || slot > 4) + return -1; + return slot + 4; +} + +static void adm5120_pci_fixup(struct pci_dev *dev) +{ + if (dev->devfn == 0) { + pci_write_config_word(dev, PCI_COMMAND, PCI_CMM_DEF); + pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, + PCI_DEF_CACHE_LINE_SZ); + pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, 0); + pci_write_config_dword(dev, PCI_BASE_ADDRESS_1, 0); + } +} + +DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, adm5120_pci_fixup); + + +int pcibios_plat_dev_init(struct pci_dev *dev) +{ + return 0; +} + +static int __init adm5120_pci_setup(void) +{ + + if ((*(volatile u32 *)(KSEG1ADDR(ADM5120_CODE))) & ADM5120_CODE_PQFP) { + printk("System has no PCI BIOS\n"); + return 1; + } + printk("System has PCI BIOS\n"); + + /* Avoid ISA compat ranges. */ + PCIBIOS_MIN_IO = 0x00000000; + PCIBIOS_MIN_MEM = 0x00000000; + + /* Set I/O resource limits. */ + ioport_resource.end = 0x1fffffff; + iomem_resource.end = 0xffffffff; + + register_pci_controller(&adm5120_controller); + return 0; +} + +subsys_initcall(adm5120_pci_setup); |