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kexts: ahci: refactor driver

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This commit is contained in:
max 🍓
2023-07-09 09:07:15 +01:00
parent 7d51bcb7b8
commit cefbd3e8d6
5 changed files with 480 additions and 549 deletions
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59
kexts/drivers/block/ahci/ahci.h
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@@ -2,7 +2,13 @@
#define _AHCI_H_
#include <socks/compiler.h>
#include <socks/status.h>
#include <stdint.h>
#include <stddef.h>
struct driver;
struct device;
struct iovec;
#define SATA_SIG_ATA 0x00000101 // SATA drive
#define SATA_SIG_ATAPI 0xEB140101 // SATAPI drive
@@ -36,6 +42,9 @@
#define SCSI_CMD_READ 0xA8u
#define SCSI_CMD_READ_CAPACITY 0x25u
#define ATA_DEV_BUSY 0x80
#define ATA_DEV_DRQ 0x08
enum fis_type {
FIS_TYPE_REG_H2D = 0x27u,
FIS_TYPE_REG_D2H = 0x34u,
@@ -219,13 +228,6 @@ struct scsi_command {
} __packed;
} __packed;
/* struct scsi_command /must/ be exactly 16 bytes long, so that it fits properly
within struct hba_cmd_table */
_Static_assert(sizeof(struct scsi_command) == 16, "ahci: scsi_command must be 16 bytes");
_Static_assert(sizeof(struct fis_dma_setup) == 28, "ahci: fis_dma_setup must be 28 bytes");
_Static_assert(sizeof(struct fis_pio_setup) == 20, "ahci: fis_pio_set must be 20 bytes");
_Static_assert(sizeof(struct fis_reg_d2h) == 20, "ahci: fis_reg_d2h must be 20 bytes");
struct hba_cmd_table {
uint8_t cfis[64];
@@ -678,4 +680,47 @@ struct scsi_read_capacity_data {
uint32_t block_size;
} __packed;
struct rfis_data {
struct fis_dma_setup dma_setup;
char pad0[4];
struct fis_pio_setup pio_setup;
char pad1[12];
struct fis_reg_d2h reg_d2h;
} __packed;
struct ahci_device {
int port_no;
int type;
volatile struct hba_port *port;
struct hba_cmd_header cmd_header[32];
union {
char rfis_data[256];
struct rfis_data rfis;
};
};
/* struct scsi_command /must/ be exactly 16 bytes long, so that it fits properly
within struct hba_cmd_table */
_Static_assert(sizeof(struct scsi_command) == 16, "ahci: scsi_command must be 16 bytes");
_Static_assert(sizeof(struct fis_dma_setup) == 28, "ahci: fis_dma_setup must be 28 bytes");
_Static_assert(sizeof(struct fis_pio_setup) == 20, "ahci: fis_pio_set must be 20 bytes");
_Static_assert(sizeof(struct fis_reg_d2h) == 20, "ahci: fis_reg_d2h must be 20 bytes");
_Static_assert(offsetof(struct rfis_data, dma_setup) == 0, "offsetof dma_setup in rfis_data must be 0x00");
_Static_assert(offsetof(struct rfis_data, pio_setup) == 0x20, "offsetof dma_setup in rfis_data must be 0x20");
_Static_assert(offsetof(struct rfis_data, reg_d2h) == 0x40, "offsetof dma_setup in rfis_data must be 0x40");
extern struct driver *ahci_driver(void);
extern kern_status_t identify_ata_device(struct ahci_device *dev, struct identify_device_data *out);
extern kern_status_t identify_atapi_device(struct ahci_device *dev, struct identify_device_data *out);
extern kern_status_t send_ata_command(struct ahci_device *dev, unsigned int cmd, struct iovec *vec, size_t nvec);
extern kern_status_t send_atapi_command(struct ahci_device *dev, struct scsi_command *cmd, struct iovec *vec, size_t nvec);
extern void rebase_ahci_port(struct ahci_device *dev);
extern void probe_ahci_ports(struct driver *driver, struct device *controller, volatile struct hba_config *abar,
void(*callback)(int, struct device *, volatile struct hba_port *, int));
extern void create_device_from_ahci_port(int port_no, struct device *controller, volatile struct hba_port *port, int type);
#endif