47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
#ifndef _KERNEL_DRIVERS_BUS_X86_PCI_H
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#define _KERNEL_DRIVERS_BUS_X86_PCI_H
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#include <drivers/driver_manager.h>
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#include <libkern/c_attrs.h>
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#include <libkern/types.h>
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#include <platform/x86/port.h>
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struct PACKED pcidd {
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uint8_t bus;
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uint8_t device;
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uint8_t function;
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uint16_t vendor_id;
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uint16_t device_id;
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uint8_t class_id;
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uint8_t subclass_id;
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uint8_t interface_id;
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uint8_t revision_id;
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uint32_t interrupt;
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uint32_t port_base;
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};
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typedef struct pcidd pcidd_t;
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enum bar_type {
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MEMORY_MAPPED = 0,
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INPUT_OUTPUT = 1
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};
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typedef struct {
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char prefetchable;
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uint32_t address;
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uint8_t type;
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} bar_t;
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void pci_install();
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uint32_t pci_read(uint16_t bus, uint16_t device, uint16_t function, uint32_t offset);
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void pci_write(uint8_t bus, uint8_t device, uint8_t function, uint8_t offset, uint32_t data);
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char pci_has_device_functions(uint8_t bus, uint8_t device);
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int pci_find_devices();
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device_desc_t pci_get_device_desriptor(uint8_t bus, uint8_t device, uint8_t function);
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uint32_t pci_read_bar(device_t* dev, int bar_id);
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#endif /* _KERNEL_DRIVERS_BUS_X86_PCI_H */
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