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Annotation of qemu/roms/qemu-palcode/pci.h, revision 1.1

1.1     ! root        1: /* Simplistic PCI support.
        !             2: 
        !             3:    Copyright (C) 2011 Richard Henderson
        !             4: 
        !             5:    This file is part of QEMU PALcode.
        !             6: 
        !             7:    This program is free software; you can redistribute it and/or modify
        !             8:    it under the terms of the GNU General Public License as published by
        !             9:    the Free Software Foundation; either version 2 of the License or
        !            10:    (at your option) any later version.
        !            11: 
        !            12:    This program is distributed in the hope that it will be useful,
        !            13:    but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            14:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the text
        !            15:    of the GNU General Public License for more details.
        !            16: 
        !            17:    You should have received a copy of the GNU General Public License
        !            18:    along with this program; see the file COPYING.  If not see
        !            19:    <http://www.gnu.org/licenses/>.  */
        !            20: 
        !            21: /* This header is intended to be compatible with the pci.h from SeaBIOS.
        !            22:    Their header, however, is too PC specific to be of use.  */
        !            23: 
        !            24: #ifndef PCI_H
        !            25: #define PCI_H 1
        !            26: 
        !            27: extern void *pci_conf_base;
        !            28: 
        !            29: static inline void pci_config_writel(int bdf, uint8_t addr, uint32_t val)
        !            30: {
        !            31:   *(volatile uint32_t *)(pci_conf_base + bdf * 256 + addr) = val;
        !            32: }
        !            33: 
        !            34: static inline void pci_config_writew(int bdf, uint8_t addr, uint16_t val)
        !            35: {
        !            36:   *(volatile uint16_t *)(pci_conf_base + bdf * 256 + addr) = val;
        !            37: }
        !            38: 
        !            39: static inline void pci_config_writeb(int bdf, uint8_t addr, uint8_t val)
        !            40: {
        !            41:   *(volatile uint8_t *)(pci_conf_base + bdf * 256 + addr) = val;
        !            42: }
        !            43: 
        !            44: static inline uint32_t pci_config_readl(int bdf, uint8_t addr)
        !            45: {
        !            46:   return *(volatile uint32_t *)(pci_conf_base + bdf * 256 + addr);
        !            47: }
        !            48: 
        !            49: static inline uint16_t pci_config_readw(int bdf, uint8_t addr)
        !            50: {
        !            51:   return *(volatile uint16_t *)(pci_conf_base + bdf * 256 + addr);
        !            52: }
        !            53: 
        !            54: static inline uint8_t pci_config_readb(int bdf, uint8_t addr)
        !            55: {
        !            56:   return *(volatile uint8_t *)(pci_conf_base + bdf * 256 + addr);
        !            57: }
        !            58: 
        !            59: extern void pci_config_maskw(int bdf, int addr, uint16_t off, uint16_t on);
        !            60: 
        !            61: extern int pci_next(int bdf, int *pmax);
        !            62: 
        !            63: #define foreachpci(BDF, MAX)                           \
        !            64:        for (MAX = 0x0100, BDF = pci_next(0, &MAX);     \
        !            65:             BDF >= 0;                                  \
        !            66:             BDF = pci_next(BDF+1, &MAX))
        !            67: 
        !            68: #endif /* PCI_H */

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