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/* 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 */
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