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dffb70f330
We need to adjust the bus number we are trying to access based on which PCI controller its on Patch by Kumar Gala 12 Jan 2006
139 lines
5.0 KiB
C
139 lines
5.0 KiB
C
/*
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* Support for indirect PCI bridges.
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*
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* Copyright (C) 1998 Gabriel Paubert.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <common.h>
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#ifdef CONFIG_PCI
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#if (!defined(__I386__) && !defined(CONFIG_IXDP425))
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#include <asm/processor.h>
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#include <asm/io.h>
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#include <pci.h>
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#define cfg_read(val, addr, type, op) *val = op((type)(addr))
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#define cfg_write(val, addr, type, op) op((type *)(addr), (val))
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#ifdef CONFIG_IXP425
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extern unsigned char in_8 (volatile unsigned *addr);
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extern unsigned short in_le16 (volatile unsigned *addr);
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extern unsigned in_le32 (volatile unsigned *addr);
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extern void out_8 (volatile unsigned *addr, char val);
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extern void out_le16 (volatile unsigned *addr, unsigned short val);
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extern void out_le32 (volatile unsigned *addr, unsigned int val);
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#endif /* CONFIG_IXP425 */
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#if defined(CONFIG_MPC8260)
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#define INDIRECT_PCI_OP(rw, size, type, op, mask) \
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static int \
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indirect_##rw##_config_##size(struct pci_controller *hose, \
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pci_dev_t dev, int offset, type val) \
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{ \
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u32 b, d,f; \
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b = PCI_BUS(dev); d = PCI_DEV(dev); f = PCI_FUNC(dev); \
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b = b - hose->first_busno; \
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dev = PCI_BDF(b, d, f); \
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out_le32(hose->cfg_addr, dev | (offset & 0xfc) | 0x80000000); \
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sync(); \
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cfg_##rw(val, hose->cfg_data + (offset & mask), type, op); \
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return 0; \
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}
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#elif defined(CONFIG_E500)
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#define INDIRECT_PCI_OP(rw, size, type, op, mask) \
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static int \
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indirect_##rw##_config_##size(struct pci_controller *hose, \
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pci_dev_t dev, int offset, type val) \
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{ \
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u32 b, d,f; \
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b = PCI_BUS(dev); d = PCI_DEV(dev); f = PCI_FUNC(dev); \
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b = b - hose->first_busno; \
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dev = PCI_BDF(b, d, f); \
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*(hose->cfg_addr) = dev | (offset & 0xfc) | 0x80000000; \
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sync(); \
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cfg_##rw(val, hose->cfg_data + (offset & mask), type, op); \
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return 0; \
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}
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#elif defined(CONFIG_440GX) || defined(CONFIG_440EP) || defined(CONFIG_440GR)
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#define INDIRECT_PCI_OP(rw, size, type, op, mask) \
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static int \
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indirect_##rw##_config_##size(struct pci_controller *hose, \
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pci_dev_t dev, int offset, type val) \
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{ \
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u32 b, d,f; \
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b = PCI_BUS(dev); d = PCI_DEV(dev); f = PCI_FUNC(dev); \
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b = b - hose->first_busno; \
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dev = PCI_BDF(b, d, f); \
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if (PCI_BUS(dev) > 0) \
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out_le32(hose->cfg_addr, dev | (offset & 0xfc) | 0x80000001); \
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else \
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out_le32(hose->cfg_addr, dev | (offset & 0xfc) | 0x80000000); \
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cfg_##rw(val, hose->cfg_data + (offset & mask), type, op); \
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return 0; \
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}
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#else
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#define INDIRECT_PCI_OP(rw, size, type, op, mask) \
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static int \
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indirect_##rw##_config_##size(struct pci_controller *hose, \
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pci_dev_t dev, int offset, type val) \
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{ \
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u32 b, d,f; \
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b = PCI_BUS(dev); d = PCI_DEV(dev); f = PCI_FUNC(dev); \
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b = b - hose->first_busno; \
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dev = PCI_BDF(b, d, f); \
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out_le32(hose->cfg_addr, dev | (offset & 0xfc) | 0x80000000); \
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cfg_##rw(val, hose->cfg_data + (offset & mask), type, op); \
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return 0; \
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}
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#endif
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#define INDIRECT_PCI_OP_ERRATA6(rw, size, type, op, mask) \
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static int \
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indirect_##rw##_config_##size(struct pci_controller *hose, \
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pci_dev_t dev, int offset, type val) \
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{ \
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unsigned int msr = mfmsr(); \
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mtmsr(msr & ~(MSR_EE | MSR_CE)); \
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out_le32(hose->cfg_addr, dev | (offset & 0xfc) | 0x80000000); \
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cfg_##rw(val, hose->cfg_data + (offset & mask), type, op); \
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out_le32(hose->cfg_addr, 0x00000000); \
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mtmsr(msr); \
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return 0; \
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}
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INDIRECT_PCI_OP(read, byte, u8 *, in_8, 3)
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INDIRECT_PCI_OP(read, word, u16 *, in_le16, 2)
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INDIRECT_PCI_OP(read, dword, u32 *, in_le32, 0)
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#ifdef CONFIG_405GP
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INDIRECT_PCI_OP_ERRATA6(write, byte, u8, out_8, 3)
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INDIRECT_PCI_OP_ERRATA6(write, word, u16, out_le16, 2)
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INDIRECT_PCI_OP_ERRATA6(write, dword, u32, out_le32, 0)
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#else
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INDIRECT_PCI_OP(write, byte, u8, out_8, 3)
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INDIRECT_PCI_OP(write, word, u16, out_le16, 2)
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INDIRECT_PCI_OP(write, dword, u32, out_le32, 0)
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#endif
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void pci_setup_indirect(struct pci_controller* hose, u32 cfg_addr, u32 cfg_data)
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{
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pci_set_ops(hose,
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indirect_read_config_byte,
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indirect_read_config_word,
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indirect_read_config_dword,
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indirect_write_config_byte,
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indirect_write_config_word,
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indirect_write_config_dword);
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hose->cfg_addr = (unsigned int *) cfg_addr;
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hose->cfg_data = (unsigned char *) cfg_data;
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}
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#endif /* !__I386__ && !CONFIG_IXDP425 */
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#endif /* CONFIG_PCI */
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