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https://github.com/subhobhai943/SUB-OS.git
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76 lines
1.6 KiB
C
76 lines
1.6 KiB
C
#ifndef _DRIVERS_AHCI_H
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#define _DRIVERS_AHCI_H
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#include <stdint.h>
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#include <stddef.h>
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#include <stdbool.h>
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#define AHCI_PCI_CLASS 0x01
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#define AHCI_PCI_SUBCLASS 0x06
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#define AHCI_PCI_PROGIF 0x01
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#define HBA_PORT_IPM_ACTIVE 1
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#define HBA_PORT_DET_PRESENT 3
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#define AHCI_DEV_NULL 0
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#define AHCI_DEV_SATA 1
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#define AHCI_DEV_SEMB 2
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#define AHCI_DEV_PM 3
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#define AHCI_DEV_SATAPI 4
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typedef volatile struct {
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uint32_t clb;
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uint32_t clbu;
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uint32_t fb;
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uint32_t fbu;
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uint32_t is;
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uint32_t ie;
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uint32_t cmd;
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uint32_t rsv0;
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uint32_t tfd;
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uint32_t sig;
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uint32_t ssts;
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uint32_t sctl;
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uint32_t serr;
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uint32_t sact;
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uint32_t ci;
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uint32_t sntf;
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uint32_t fbs;
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uint32_t rsv1[11];
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uint32_t vendor[4];
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} __attribute__((packed)) hba_port_t;
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typedef volatile struct {
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uint32_t cap;
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uint32_t ghc;
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uint32_t is;
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uint32_t pi;
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uint32_t vs;
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uint32_t ccc_ctl;
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uint32_t ccc_pts;
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uint32_t em_loc;
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uint32_t em_ctl;
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uint32_t cap2;
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uint32_t bohc;
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uint8_t rsv[0xA0 - 0x2C];
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uint8_t vendor[0x100 - 0xA0];
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hba_port_t ports[32];
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} __attribute__((packed)) hba_mem_t;
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typedef struct {
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char model[40];
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char serial[20];
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uint64_t total_sectors;
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uint32_t sector_size;
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uint8_t port_num;
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bool present;
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} ahci_device_info_t;
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bool ahci_init(void);
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bool ahci_is_detected(void);
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const ahci_device_info_t* ahci_get_port_info(uint8_t port);
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int ahci_read_blocks(uint8_t port, uint64_t lba, uint32_t count, void* buffer);
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int ahci_write_blocks(uint8_t port, uint64_t lba, uint32_t count, const void* buffer);
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#endif // _DRIVERS_AHCI_H
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