diff options
Diffstat (limited to 'target/linux/ifxmips/files/arch/mips/pci')
| -rw-r--r-- | target/linux/ifxmips/files/arch/mips/pci/ops-ifxmips.c | 120 | ||||
| -rw-r--r-- | target/linux/ifxmips/files/arch/mips/pci/pci-ifxmips.c | 209 |
2 files changed, 0 insertions, 329 deletions
diff --git a/target/linux/ifxmips/files/arch/mips/pci/ops-ifxmips.c b/target/linux/ifxmips/files/arch/mips/pci/ops-ifxmips.c deleted file mode 100644 index fde6357e4..000000000 --- a/target/linux/ifxmips/files/arch/mips/pci/ops-ifxmips.c +++ /dev/null @@ -1,120 +0,0 @@ -#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_ebu.h> - -#define IFXMIPS_PCI_CFG_BUSNUM_SHF 16 -#define IFXMIPS_PCI_CFG_DEVNUM_SHF 11 -#define IFXMIPS_PCI_CFG_FUNNUM_SHF 8 - -#define PCI_ACCESS_READ 0 -#define PCI_ACCESS_WRITE 1 - -extern u32 ifxmips_pci_mapped_cfg; - -static int -ifxmips_pci_config_access(unsigned char access_type, - struct pci_bus *bus, unsigned int devfn, unsigned int where, u32 *data) -{ - unsigned long cfg_base; - unsigned long flags; - - u32 temp; - - /* IFXMips support slot from 0 to 15 */ - /* dev_fn 0&0x68 (AD29) is ifxmips itself */ - if ((bus->number != 0) || ((devfn & 0xf8) > 0x78) - || ((devfn & 0xf8) == 0) || ((devfn & 0xf8) == 0x68)) - return 1; - - spin_lock_irqsave(&ebu_lock, flags); - - cfg_base = ifxmips_pci_mapped_cfg; - cfg_base |= (bus->number << IFXMIPS_PCI_CFG_BUSNUM_SHF) | (devfn << - IFXMIPS_PCI_CFG_FUNNUM_SHF) | (where & ~0x3); - - /* Perform access */ - if (access_type == PCI_ACCESS_WRITE) - { -#ifdef CONFIG_SWAP_IO_SPACE - ifxmips_w32(swab32(*data), ((u32*)cfg_base)); -#else - ifxmips_w32(*data, ((u32*)cfg_base)); -#endif - } else { - *data = ifxmips_r32(((u32*)(cfg_base))); -#ifdef CONFIG_SWAP_IO_SPACE - *data = swab32(*data); -#endif - } - wmb(); - - /* clean possible Master abort */ - cfg_base = (ifxmips_pci_mapped_cfg | (0x0 << IFXMIPS_PCI_CFG_FUNNUM_SHF)) + 4; - temp = ifxmips_r32(((u32*)(cfg_base))); -#ifdef CONFIG_SWAP_IO_SPACE - temp = swab32 (temp); -#endif - cfg_base = (ifxmips_pci_mapped_cfg | (0x68 << IFXMIPS_PCI_CFG_FUNNUM_SHF)) + 4; - ifxmips_w32(temp, ((u32*)cfg_base)); - - spin_unlock_irqrestore(&ebu_lock, flags); - - if (((*data) == 0xffffffff) && (access_type == PCI_ACCESS_READ)) - return 1; - - return 0; -} - -int -ifxmips_pci_read_config_dword(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 * val) -{ - u32 data = 0; - - if (ifxmips_pci_config_access(PCI_ACCESS_READ, bus, devfn, where, &data)) - return PCIBIOS_DEVICE_NOT_FOUND; - - if (size == 1) - *val = (data >> ((where & 3) << 3)) & 0xff; - else if (size == 2) - *val = (data >> ((where & 3) << 3)) & 0xffff; - else - *val = data; - - return PCIBIOS_SUCCESSFUL; -} - -int -ifxmips_pci_write_config_dword(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 val) -{ - u32 data = 0; - - if (size == 4) - { - data = val; - } else { - if (ifxmips_pci_config_access(PCI_ACCESS_READ, bus, devfn, where, &data)) - return PCIBIOS_DEVICE_NOT_FOUND; - - if (size == 1) - data = (data & ~(0xff << ((where & 3) << 3))) | - (val << ((where & 3) << 3)); - else if (size == 2) - data = (data & ~(0xffff << ((where & 3) << 3))) | - (val << ((where & 3) << 3)); - } - - if (ifxmips_pci_config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data)) - return PCIBIOS_DEVICE_NOT_FOUND; - - return PCIBIOS_SUCCESSFUL; -} diff --git a/target/linux/ifxmips/files/arch/mips/pci/pci-ifxmips.c b/target/linux/ifxmips/files/arch/mips/pci/pci-ifxmips.c deleted file mode 100644 index 6ff765e85..000000000 --- a/target/linux/ifxmips/files/arch/mips/pci/pci-ifxmips.c +++ /dev/null @@ -1,209 +0,0 @@ -#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); |