18 lines
547 B
C
18 lines
547 B
C
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/* SPDX-License-Identifier: MIT */
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/* SPDX-FileCopyrightText: 2023 Nicholas Chin */
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#include <stdint.h>
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#define PCI_CFG_ADDR 0xcf8
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#define PCI_CFG_DATA 0xcfc
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#define PCI_DEV(bus, dev, func) (1u << 31 | bus << 16 | dev << 11 | func << 8)
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uint32_t pci_read_32(uint32_t dev, uint8_t reg);
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void pci_write_32(uint32_t dev, uint8_t reg, uint32_t value);
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int sys_iopl(int level);
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void sys_outb(unsigned int port, uint8_t data);
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void sys_outl(unsigned int port, uint32_t data);
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uint8_t sys_inb(unsigned int port);
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uint32_t sys_inl(unsigned int port);
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