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Luke Street
61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
#pragma once
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#include <common.h>
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#include <vector.h>
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#define PCI_ID(bus, dev, func) ((uint32_t) (bus & 0xFF) << 16 | (dev & 0x1F) << 11 | (func & 0x07) << 8)
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#define PCI_DEVICE_ID(dev) (PCI_ID(dev->loc.bus, dev->loc.device, dev->loc.function))
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#define PCI_ID_BUS(id) ((uint8_t) ((id) >> 16 & 0xFF))
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#define PCI_ID_DEV(id) ((uint8_t) ((id) >> 11 & 0x1F))
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#define PCI_ID_FUNC(id) ((uint8_t) ((id) >> 8 & 0x07))
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#define PCI_HEADER_VENDOR_ID 0x00
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#define PCI_HEADER_DEVICE_ID 0x02
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#define PCI_HEADER_REVISION 0x08
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#define PCI_HEADER_CLASS 0x0A
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#define PCI_HEADER_TYPE_ID 0x0E
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#define PCI_HEADER_BUS_NUM 0x18
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#define PCI_HEADER_SEC_BUS 0x19
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#define PCI_HEADER_IRQ_LINE 0x3C // 8 bits
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#define PCI_HEADER_BAR0_ADDR 0x10
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#define PCI_HEADER_BAR1_ADDR 0x14
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#define PCI_HEADER_BAR2_ADDR 0x18
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#define PCI_HEADER_BAR3_ADDR 0x1C
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#define PCI_HEADER_BAR4_ADDR 0x20
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#define PCI_HEADER_BAR5_ADDR 0x24
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struct pci_device_loc {
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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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};
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typedef struct pci_device_loc pci_device_loc_t;
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struct pci_device {
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pci_device_loc_t loc;
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uint16_t class;
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uint16_t vendor_id;
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uint16_t device_id;
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uint8_t revision_id;
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uint8_t prog_if;
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uint32_t bar0;
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uint32_t bar1;
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uint32_t bar2;
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uint32_t bar3;
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uint32_t bar4;
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uint32_t bar5;
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};
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typedef struct pci_device pci_device_t;
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void pci_init();
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vc_vector *pci_get_devices();
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uint32_t pci_config_read_long(uint32_t id, uint8_t offset);
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uint16_t pci_config_read_word(uint32_t id, uint8_t offset);
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uint8_t pci_config_read_byte(uint32_t id, uint8_t offset);
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void pci_config_write_byte(uint32_t id, uint8_t offset, uint8_t val); |