| /* Simplistic PCI support. |
| |
| Copyright (C) 2011 Richard Henderson |
| |
| This file is part of QEMU PALcode. |
| |
| 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. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the text |
| of the GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; see the file COPYING. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| /* This header is intended to be compatible with the pci.h from SeaBIOS. |
| Their header, however, is too PC specific to be of use. */ |
| |
| #ifndef PCI_H |
| #define PCI_H 1 |
| |
| extern void *pci_conf_base; |
| |
| static inline void pci_config_writel(int bdf, uint8_t addr, uint32_t val) |
| { |
| *(volatile uint32_t *)(pci_conf_base + bdf * 256 + addr) = val; |
| } |
| |
| static inline void pci_config_writew(int bdf, uint8_t addr, uint16_t val) |
| { |
| *(volatile uint16_t *)(pci_conf_base + bdf * 256 + addr) = val; |
| } |
| |
| static inline void pci_config_writeb(int bdf, uint8_t addr, uint8_t val) |
| { |
| *(volatile uint8_t *)(pci_conf_base + bdf * 256 + addr) = val; |
| } |
| |
| static inline uint32_t pci_config_readl(int bdf, uint8_t addr) |
| { |
| return *(volatile uint32_t *)(pci_conf_base + bdf * 256 + addr); |
| } |
| |
| static inline uint16_t pci_config_readw(int bdf, uint8_t addr) |
| { |
| return *(volatile uint16_t *)(pci_conf_base + bdf * 256 + addr); |
| } |
| |
| static inline uint8_t pci_config_readb(int bdf, uint8_t addr) |
| { |
| return *(volatile uint8_t *)(pci_conf_base + bdf * 256 + addr); |
| } |
| |
| extern void pci_config_maskw(int bdf, int addr, uint16_t off, uint16_t on); |
| |
| extern int pci_next(int bdf, int *pmax); |
| |
| #define PCI_DEVFN(slot, func) ((((slot) & 0x1f) << 3) | ((func) & 0x07)) |
| #define PCI_BUS(devfn) ((devfn) >> 8) |
| #define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f) |
| #define PCI_FUNC(devfn) ((devfn) & 0x07) |
| |
| #define foreachpci(BDF, MAX) \ |
| for (MAX = 0x0100, BDF = pci_next(0, &MAX); \ |
| BDF >= 0; \ |
| BDF = pci_next(BDF+1, &MAX)) |
| |
| #endif /* PCI_H */ |