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Espresso 0.0.1c

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This commit is contained in:
David Goeke
2025-07-01 20:39:38 -05:00
parent f9f3faca4f
commit 8648637b51
23 changed files with 384 additions and 419 deletions
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61
include/drivers/pci.h
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@ -1,7 +1,66 @@
#ifndef _PCI_H
#define _PCI_H
#include <stdint.h>
#include <types.h>
struct pci_header {
uint16_t vendor_id;
uint16_t device_id;
uint16_t command;
uint16_t status;
uint8_t revision_id;
uint8_t prog_if;
uint8_t subclass;
uint8_t class_code;
uint8_t cache_line_size;
uint8_t latency_timer;
uint8_t header_type;
uint8_t bist;
} __attribute__((packed));
struct pci_header_type_0 {
uint16_t vendor_id;
uint16_t device_id;
uint16_t command;
uint16_t status;
uint8_t revision_id;
uint8_t prog_if;
uint8_t subclass;
uint8_t class_code;
uint8_t cache_line_size;
uint8_t latency_timer;
uint8_t header_type;
uint8_t bist;
uint32_t bar0;
uint32_t bar1;
uint32_t bar2;
uint32_t bar3;
uint32_t bar4;
uint32_t bar5;
uint32_t cardbus_cis_ptr;
uint16_t subsystem_vendor_id;
uint16_t subsystem_id;
uint32_t expansion_rom_base;
uint8_t capabilities_ptr;
uint8_t reserved1[3];
uint32_t reserved2;
uint8_t interrupt_line;
uint8_t interrupt_pin;
uint8_t min_grant;
uint8_t max_latency;
} __attribute__((packed));
uint32_t pci_config_read(uint8_t bus, uint8_t device, uint8_t function, uint8_t offset);
void pci_config_write(uint8_t bus, uint8_t device, uint8_t function, uint8_t offset, uint32_t value);