/* * VR4131 PCIU support code for TANBAC Evaluation board TB0229. * * (C) Masami Komiya 2004 * * 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, or (at * your option) any later version. */ #include #include #include #define VR4131_PCIMMAW1REG (volatile unsigned int *)(CKSEG1 + 0x0f000c00) #define VR4131_PCIMMAW2REG (volatile unsigned int *)(CKSEG1 + 0x0f000c04) #define VR4131_PCITAW1REG (volatile unsigned int *)(CKSEG1 + 0x0f000c08) #define VR4131_PCITAW2REG (volatile unsigned int *)(CKSEG1 + 0x0f000c0c) #define VR4131_PCIMIOAWREG (volatile unsigned int *)(CKSEG1 + 0x0f000c10) #define VR4131_PCICONFDREG (volatile unsigned int *)(CKSEG1 + 0x0f000c14) #define VR4131_PCICONFAREG (volatile unsigned int *)(CKSEG1 + 0x0f000c18) #define VR4131_PCIMAILREG (volatile unsigned int *)(CKSEG1 + 0x0f000c1c) #define VR4131_BUSERRADREG (volatile unsigned int *)(CKSEG1 + 0x0f000c24) #define VR4131_INTCNTSTAREG (volatile unsigned int *)(CKSEG1 + 0x0f000c28) #define VR4131_PCIEXACCREG (volatile unsigned int *)(CKSEG1 + 0x0f000c2c) #define VR4131_PCIRECONTREG (volatile unsigned int *)(CKSEG1 + 0x0f000c30) #define VR4131_PCIENREG (volatile unsigned int *)(CKSEG1 + 0x0f000c34) #define VR4131_PCICLKSELREG (volatile unsigned int *)(CKSEG1 + 0x0f000c38) #define VR4131_PCITRDYREG (volatile unsigned int *)(CKSEG1 + 0x0f000c3c) #define VR4131_PCICLKRUNREG (volatile unsigned int *)(CKSEG1 + 0x0f000c60) #define VR4131_PCIHOSTCONFIG (volatile unsigned int *)(CKSEG1 + 0x0f000d00) #define VR4131_VENDORIDREG (volatile unsigned int *)(CKSEG1 + 0x0f000d00) #define VR4131_DEVICEIDREG (volatile unsigned int *)(CKSEG1 + 0x0f000d00) #define VR4131_COMMANDREG (volatile unsigned int *)(CKSEG1 + 0x0f000d04) #define VR4131_STATUSREG (volatile unsigned int *)(CKSEG1 + 0x0f000d04) #define VR4131_REVREG (volatile unsigned int *)(CKSEG1 + 0x0f000d08) #define VR4131_CLASSREG (volatile unsigned int *)(CKSEG1 + 0x0f000d08) #define VR4131_CACHELSREG (volatile unsigned int *)(CKSEG1 + 0x0f000d0c) #define VR4131_LATTIMERRG (volatile unsigned int *)(CKSEG1 + 0x0f000d0c) #define VR4131_MAILBAREG (volatile unsigned int *)(CKSEG1 + 0x0f000d10) #define VR4131_PCIMBA1REG (volatile unsigned int *)(CKSEG1 + 0x0f000d14) #define VR4131_PCIMBA2REG (volatile unsigned int *)(CKSEG1 + 0x0f000d18) /*#define VR41XX_PCIIRQ_OFFSET (VR41XX_IRQ_MAX + 1) */ /*#define VR41XX_PCIIRQ_MAX (VR41XX_IRQ_MAX + 12) */ /*#define VR4122_PCI_HOST_BASE 0xa0000000 */ volatile unsigned int *pciconfigaddr; volatile unsigned int *pciconfigdata; #define PCI_ACCESS_READ 0 #define PCI_ACCESS_WRITE 1 /* * Access PCI Configuration Register for VR4131 */ static int vr4131_pci_config_access (u8 access_type, u32 dev, u32 reg, u32 * data) { u32 bus; u32 device; bus = ((dev & 0xff0000) >> 16); device = ((dev & 0xf800) >> 11); if (bus == 0) { /* Type 0 Configuration */ *VR4131_PCICONFAREG = (u32) (1UL << device | (reg & 0xfc)); } else { /* Type 1 Configuration */ *VR4131_PCICONFAREG = (u32) (dev | ((reg / 4) << 2) | 1); } if (access_type == PCI_ACCESS_WRITE) { *VR4131_PCICONFDREG = *data; } else { *data = *VR4131_PCICONFDREG; } return (0); } static int vr4131_pci_read_config_byte (u32 hose, u32 dev, u32 reg, u8 * val) { u32 data; if (vr4131_pci_config_access (PCI_ACCESS_READ, dev, reg, &data)) return -1; *val = (data >> ((reg & 3) << 3)) & 0xff; return 0; } static int vr4131_pci_read_config_word (u32 hose, u32 dev, u32 reg, u16 * val) { u32 data; if (reg & 1) return -1; if (vr4131_pci_config_access (PCI_ACCESS_READ, dev, reg, &data)) return -1; *val = (data >> ((reg & 3) << 3)) & 0xffff; return 0; } static int vr4131_pci_read_config_dword (u32 hose, u32 dev, u32 reg, u32 * val) { u32 data = 0; if (reg & 3) return -1; if (vr4131_pci_config_access (PCI_ACCESS_READ, dev, reg, &data)) return -1; *val = data; return (0); } static int vr4131_pci_write_config_byte (u32 hose, u32 dev, u32 reg, u8 val) { u32 data = 0; if (vr4131_pci_config_access (PCI_ACCESS_READ, dev, reg, &data)) return -1; data = (data & ~(0xff << ((reg & 3) << 3))) | (val << ((reg & 3) << 3)); if (vr4131_pci_config_access (PCI_ACCESS_WRITE, dev, reg, &data)) return -1; return 0; } static int vr4131_pci_write_config_word (u32 hose, u32 dev, u32 reg, u16 val) { u32 data = 0; if (reg & 1) return -1; if (vr4131_pci_config_access (PCI_ACCESS_READ, dev, reg, &data)) return -1; data = (data & ~(0xffff << ((reg & 3) << 3))) | (val << ((reg & 3) << 3)); if (vr4131_pci_config_access (PCI_ACCESS_WRITE, dev, reg, &data)) return -1; return 0; } static int vr4131_pci_write_config_dword (u32 hose, u32 dev, u32 reg, u32 val) { u32 data; if (reg & 3) { return -1; } data = val; if (vr4131_pci_config_access (PCI_ACCESS_WRITE, dev, reg, &data)) return -1; return (0); } /* * Initialize VR4131 PCIU */ vr4131_pciu_init () { /* PCI clock */ *VR4131_PCICLKSELREG = 0x00000002; /* PCI memory and I/O space */ *VR4131_PCIMMAW1REG = 0x100F9010; *VR4131_PCIMMAW2REG = 0x140FD014; *VR4131_PCIMIOAWREG = 0x160FD000; /* Target memory window */ *VR4131_PCITAW1REG = 0x00081000; /* 64MB */ *VR4131_PCITAW2REG = 0x00000000; *VR4131_MAILBAREG = 0UL; *VR4131_PCIMBA1REG = 0UL; *VR4131_PCITRDYREG = 0x00008004; *VR4131_PCIENREG = 0x00000004; /* PCI enable */ *VR4131_COMMANDREG = 0x02000007; } /* * Initialize Module */ void init_vr4131_pci (struct pci_controller *hose) { hose->first_busno = 0; hose->last_busno = 0xff; vr4131_pciu_init (); /* Initialize VR4131 PCIU */ /* PCI memory space #1 */ pci_set_region (hose->regions + 0, 0x10000000, 0xb0000000, 0x04000000, PCI_REGION_MEM); /* PCI memory space #2 */ pci_set_region (hose->regions + 1, 0x14000000, 0xb4000000, 0x02000000, PCI_REGION_MEM); /* PCI I/O space */ pci_set_region (hose->regions + 2, 0x16000000, 0xb6000000, 0x02000000, PCI_REGION_IO); /* System memory space */ pci_set_region (hose->regions + 3, 0x00000000, 0x80000000, 0x04000000, PCI_REGION_MEM | PCI_REGION_SYS_MEMORY); hose->region_count = 4; hose->read_byte = vr4131_pci_read_config_byte; hose->read_word = vr4131_pci_read_config_word; hose->read_dword = vr4131_pci_read_config_dword; hose->write_byte = vr4131_pci_write_config_byte; hose->write_word = vr4131_pci_write_config_word; hose->write_dword = vr4131_pci_write_config_dword; pci_register_hose (hose); hose->last_busno = pci_hose_scan (hose); return; }