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0cbd87c2c4
Move PCI_DEVFN(), PCI_BUS(), PCI_SLOT(), and PCI_FUNC() to pci.h. Signed-off-by: Jason Thorpe <thorpej@me.com> Message-Id: <20210603035317.6814-5-thorpej@me.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
/* Simplistic PCI support.
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Copyright (C) 2011 Richard Henderson
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This file is part of QEMU PALcode.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the text
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of the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not see
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<http://www.gnu.org/licenses/>. */
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/* This header is intended to be compatible with the pci.h from SeaBIOS.
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Their header, however, is too PC specific to be of use. */
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#ifndef PCI_H
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#define PCI_H 1
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extern void *pci_conf_base;
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static inline void pci_config_writel(int bdf, uint8_t addr, uint32_t val)
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{
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*(volatile uint32_t *)(pci_conf_base + bdf * 256 + addr) = val;
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}
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static inline void pci_config_writew(int bdf, uint8_t addr, uint16_t val)
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{
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*(volatile uint16_t *)(pci_conf_base + bdf * 256 + addr) = val;
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}
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static inline void pci_config_writeb(int bdf, uint8_t addr, uint8_t val)
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{
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*(volatile uint8_t *)(pci_conf_base + bdf * 256 + addr) = val;
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}
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static inline uint32_t pci_config_readl(int bdf, uint8_t addr)
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{
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return *(volatile uint32_t *)(pci_conf_base + bdf * 256 + addr);
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}
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static inline uint16_t pci_config_readw(int bdf, uint8_t addr)
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{
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return *(volatile uint16_t *)(pci_conf_base + bdf * 256 + addr);
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}
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static inline uint8_t pci_config_readb(int bdf, uint8_t addr)
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{
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return *(volatile uint8_t *)(pci_conf_base + bdf * 256 + addr);
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}
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extern void pci_config_maskw(int bdf, int addr, uint16_t off, uint16_t on);
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extern int pci_next(int bdf, int *pmax);
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#define PCI_DEVFN(slot, func) ((((slot) & 0x1f) << 3) | ((func) & 0x07))
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#define PCI_BUS(devfn) ((devfn) >> 8)
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#define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f)
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#define PCI_FUNC(devfn) ((devfn) & 0x07)
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#define foreachpci(BDF, MAX) \
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for (MAX = 0x0100, BDF = pci_next(0, &MAX); \
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BDF >= 0; \
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BDF = pci_next(BDF+1, &MAX))
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#endif /* PCI_H */
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