+++ /dev/null
-#include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/mm.h>
-#include <asm/addrspace.h>
-#include <linux/vmalloc.h>
-#include <ifxmips.h>
-#include <ifxmips_irq.h>
-#include <ifxmips_cgu.h>
-
-#define IFXMIPS_PCI_MEM_BASE 0x18000000
-#define IFXMIPS_PCI_MEM_SIZE 0x02000000
-#define IFXMIPS_PCI_IO_BASE 0x1AE00000
-#define IFXMIPS_PCI_IO_SIZE 0x00200000
-
-extern int ifxmips_pci_read_config_dword(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val);
-extern int ifxmips_pci_write_config_dword(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val);
-
-struct pci_ops ifxmips_pci_ops =
-{
- .read = ifxmips_pci_read_config_dword,
- .write = ifxmips_pci_write_config_dword
-};
-
-static struct resource pci_io_resource =
-{
- .name = "io pci IO space",
- .start = IFXMIPS_PCI_IO_BASE,
- .end = IFXMIPS_PCI_IO_BASE + IFXMIPS_PCI_IO_SIZE - 1,
- .flags = IORESOURCE_IO
-};
-
-static struct resource pci_mem_resource =
-{
- .name = "ext pci memory space",
- .start = IFXMIPS_PCI_MEM_BASE,
- .end = IFXMIPS_PCI_MEM_BASE + IFXMIPS_PCI_MEM_SIZE - 1,
- .flags = IORESOURCE_MEM
-};
-
-static struct pci_controller ifxmips_pci_controller =
-{
- .pci_ops = &ifxmips_pci_ops,
- .mem_resource = &pci_mem_resource,
- .mem_offset = 0x00000000UL,
- .io_resource = &pci_io_resource,
- .io_offset = 0x00000000UL,
-};
-
-/* the cpu can can generate the 33Mhz or rely on an external clock the cgu needs the
- proper setting, otherwise the cpu hangs. we have no way of runtime detecting this */
-u32 ifxmips_pci_mapped_cfg;
-int ifxmips_pci_external_clock = 0;
-
-/* Since the PCI REQ pins can be reused for other functionality, make it possible
- to exclude those from interpretation by the PCI controller */
-int ifxmips_pci_req_mask = 0xf;
-
-static int __init
-ifxmips_pci_set_external_clk(char *str)
-{
- printk("cgu: setting up external pci clock\n");
- ifxmips_pci_external_clock = 1;
- return 1;
-}
-__setup("pci_external_clk", ifxmips_pci_set_external_clk);
-
-int
-pcibios_plat_dev_init(struct pci_dev *dev)
-{
- u8 pin;
-
- pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
- switch(pin)
- {
- case 0:
- break;
- case 1:
- //falling edge level triggered:0x4, low level:0xc, rising edge:0x2
- ifxmips_w32(ifxmips_r32(IFXMIPS_EBU_PCC_CON) | 0xc, IFXMIPS_EBU_PCC_CON);
- ifxmips_w32(ifxmips_r32(IFXMIPS_EBU_PCC_IEN) | 0x10, IFXMIPS_EBU_PCC_IEN);
- break;
- case 2:
- case 3:
- case 4:
- printk ("WARNING: interrupt pin %d not supported yet!\n", pin);
- default:
- printk ("WARNING: invalid interrupt pin %d\n", pin);
- return 1;
- }
- return 0;
-}
-
-static u32 calc_bar11mask(void)
-{
- u32 mem, bar11mask;
-
- /* BAR11MASK value depends on available memory on system. */
- mem = num_physpages * PAGE_SIZE;
- bar11mask = (0x0ffffff0 & ~((1 << (fls(mem) -1)) -1)) | 8;
-
- return bar11mask;
-}
-
-static void __init
-ifxmips_pci_startup(void)
-{
- u32 temp_buffer;
-
- cgu_setup_pci_clk(ifxmips_pci_external_clock);
-
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P1_OUT) | (1 << 5), IFXMIPS_GPIO_P1_OUT);
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P1_OD) | (1 << 5), IFXMIPS_GPIO_P1_OD);
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P1_DIR) | (1 << 5), IFXMIPS_GPIO_P1_DIR);
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P1_ALTSEL1) & ~(1 << 5), IFXMIPS_GPIO_P1_ALTSEL1);
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P1_ALTSEL0) & ~(1 << 5), IFXMIPS_GPIO_P1_ALTSEL0);
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P1_DIR) & ~0x2000, IFXMIPS_GPIO_P1_DIR);
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P1_DIR) | 0x4000, IFXMIPS_GPIO_P1_DIR);
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P1_ALTSEL1) & ~0x6000, IFXMIPS_GPIO_P1_ALTSEL1);
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P1_ALTSEL0) | 0x6000, IFXMIPS_GPIO_P1_ALTSEL0);
- /* enable auto-switching between PCI and EBU */
- ifxmips_w32(0xa, PCI_CR_CLK_CTRL);
- /* busy, i.e. configuration is not done, PCI access has to be retried */
- ifxmips_w32(ifxmips_r32(PCI_CR_PCI_MOD) & ~(1 << 24), PCI_CR_PCI_MOD);
- wmb ();
- /* BUS Master/IO/MEM access */
- ifxmips_w32(ifxmips_r32(PCI_CS_STS_CMD) | 7, PCI_CS_STS_CMD);
-
- /* enable external 2 PCI masters */
- temp_buffer = ifxmips_r32(PCI_CR_PC_ARB);
- temp_buffer &= (~(ifxmips_pci_req_mask << 16));
- /* enable internal arbiter */
- temp_buffer |= (1 << INTERNAL_ARB_ENABLE_BIT);
- /* enable internal PCI master reqest */
- temp_buffer &= (~(3 << PCI_MASTER0_REQ_MASK_2BITS));
-
- /* enable EBU reqest */
- temp_buffer &= (~(3 << PCI_MASTER1_REQ_MASK_2BITS));
-
- /* enable all external masters request */
- temp_buffer &= (~(3 << PCI_MASTER2_REQ_MASK_2BITS));
- ifxmips_w32(temp_buffer, PCI_CR_PC_ARB);
- wmb ();
-
- ifxmips_w32(0x18000000, PCI_CR_FCI_ADDR_MAP0);
- ifxmips_w32(0x18400000, PCI_CR_FCI_ADDR_MAP1);
- ifxmips_w32(0x18800000, PCI_CR_FCI_ADDR_MAP2);
- ifxmips_w32(0x18c00000, PCI_CR_FCI_ADDR_MAP3);
- ifxmips_w32(0x19000000, PCI_CR_FCI_ADDR_MAP4);
- ifxmips_w32(0x19400000, PCI_CR_FCI_ADDR_MAP5);
- ifxmips_w32(0x19800000, PCI_CR_FCI_ADDR_MAP6);
- ifxmips_w32(0x19c00000, PCI_CR_FCI_ADDR_MAP7);
- ifxmips_w32(0x1ae00000, PCI_CR_FCI_ADDR_MAP11hg);
- ifxmips_w32(calc_bar11mask(), PCI_CR_BAR11MASK);
- ifxmips_w32(0, PCI_CR_PCI_ADDR_MAP11);
- ifxmips_w32(0, PCI_CS_BASE_ADDR1);
-#ifdef CONFIG_SWAP_IO_SPACE
- /* both TX and RX endian swap are enabled */
- ifxmips_w32(ifxmips_r32(PCI_CR_PCI_EOI) | 3, PCI_CR_PCI_EOI);
- wmb ();
-#endif
- /*TODO: disable BAR2 & BAR3 - why was this in the origianl infineon code */
- ifxmips_w32(ifxmips_r32(PCI_CR_BAR12MASK) | 0x80000000, PCI_CR_BAR12MASK);
- ifxmips_w32(ifxmips_r32(PCI_CR_BAR13MASK) | 0x80000000, PCI_CR_BAR13MASK);
- /*use 8 dw burst length */
- ifxmips_w32(0x303, PCI_CR_FCI_BURST_LENGTH);
- ifxmips_w32(ifxmips_r32(PCI_CR_PCI_MOD) | (1 << 24), PCI_CR_PCI_MOD);
- wmb();
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P1_OUT) & ~(1 << 5), IFXMIPS_GPIO_P1_OUT);
- wmb();
- mdelay(1);
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P1_OUT) | (1 << 5), IFXMIPS_GPIO_P1_OUT);
-}
-
-int __init
-pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin){
- switch(slot)
- {
- case 13:
- /* IDSEL = AD29 --> USB Host Controller */
- return (INT_NUM_IM1_IRL0 + 17);
- case 14:
- /* IDSEL = AD30 --> mini PCI connector */
- return (INT_NUM_IM0_IRL0 + 22);
- default:
- printk("Warning: no IRQ found for PCI device in slot %d, pin %d\n", slot, pin);
- return 0;
- }
-}
-
-int __init
-pcibios_init(void)
-{
- extern int pci_probe_only;
-
- pci_probe_only = 0;
- printk("PCI: Probing PCI hardware on host bus 0.\n");
- ifxmips_pci_startup ();
- ifxmips_pci_mapped_cfg = (u32)ioremap_nocache(0x17000000, 0x800 * 16);
- printk("IFXMips PCI mapped to 0x%08lX\n", (unsigned long)ifxmips_pci_mapped_cfg);
- ifxmips_pci_controller.io_map_base = (unsigned long)ioremap(IFXMIPS_PCI_IO_BASE, IFXMIPS_PCI_IO_SIZE - 1);
- printk("IFXMips PCI I/O mapped to 0x%08lX\n", (unsigned long)ifxmips_pci_controller.io_map_base);
- register_pci_controller(&ifxmips_pci_controller);
- return 0;
-}
-
-arch_initcall(pcibios_init);
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