diff options
Diffstat (limited to 'arch/i386/lib/pci_type1.c')
| -rw-r--r-- | arch/i386/lib/pci_type1.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/i386/lib/pci_type1.c b/arch/i386/lib/pci_type1.c new file mode 100644 index 0000000000..225ae4a990 --- /dev/null +++ b/arch/i386/lib/pci_type1.c @@ -0,0 +1,51 @@ +/* + * Support for type PCI configuration cycles. + * based on pci_indirect.c + * + * Copyright (C) 2002 Daniel Engström, Omicron Ceti AB, daniel@omicron.se. + * + * 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 of the License, or (at your option) any later version. + */ + +#include <common.h> +#include <asm/io.h> +#include <pci.h> + +#define cfg_read(val, addr, op) *val = op((int)(addr)) +#define cfg_write(val, addr, op) op((val), (int)(addr)) + +#define TYPE1_PCI_OP(rw, size, type, op, mask) \ +static int \ +type1_##rw##_config_##size(struct pci_controller *hose, \ + pci_dev_t dev, int offset, type val) \ +{ \ + outl(dev | (offset & 0xfc) | 0x80000000, (int)hose->cfg_addr); \ + cfg_##rw(val, hose->cfg_data + (offset & mask), op); \ + return 0; \ +} + + +TYPE1_PCI_OP(read, byte, u8 *, inb, 3) +TYPE1_PCI_OP(read, word, u16 *, inw, 2) +TYPE1_PCI_OP(read, dword, u32 *, inl, 0) + +TYPE1_PCI_OP(write, byte, u8, outb, 3) +TYPE1_PCI_OP(write, word, u16, outw, 2) +TYPE1_PCI_OP(write, dword, u32, outl, 0) + +void pci_setup_type1(struct pci_controller* hose, u32 cfg_addr, u32 cfg_data) +{ + pci_set_ops(hose, + type1_read_config_byte, + type1_read_config_word, + type1_read_config_dword, + type1_write_config_byte, + type1_write_config_word, + type1_write_config_dword); + + hose->cfg_addr = (unsigned int *) cfg_addr; + hose->cfg_data = (unsigned char *) cfg_data; +} |
