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Annotation of qemu/roms/qemu-palcode/pci.h, revision 1.1.1.1

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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