834 lines
30 KiB
C
834 lines
30 KiB
C
#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include "ibm.h"
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#include "hdd_file.h"
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#include "scsi.h"
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#include "scsi_hd.h"
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#include "timer.h"
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extern char ide_fn[7][512];
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#define BUFFER_SIZE (256*1024)
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#define RW_DELAY (TIMER_USEC * 500)
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enum
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{
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CMD_POS_IDLE = 0,
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CMD_POS_WAIT,
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CMD_POS_START_SECTOR,
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CMD_POS_TRANSFER
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};
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typedef struct scsi_hd_data
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{
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int blocks;
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int cmd_pos, new_cmd_pos;
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int addr, len;
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int sector_pos;
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uint8_t buf[512];
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uint8_t status;
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uint8_t data_in[BUFFER_SIZE];
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uint8_t data_out[BUFFER_SIZE];
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int data_pos_read, data_pos_write;
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int bytes_received, bytes_required;
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hdd_file_t hdd;
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int sense_key, asc, ascq;
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int hd_id;
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pc_timer_t callback_timer;
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scsi_bus_t *bus;
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} scsi_hd_data;
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static void scsi_hd_callback(void *p)
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{
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scsi_hd_data *data = p;
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if (data->cmd_pos == CMD_POS_WAIT)
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{
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data->cmd_pos = data->new_cmd_pos;
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scsi_bus_kick(data->bus);
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}
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}
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static void *scsi_hd_init(scsi_bus_t *bus, int id)
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{
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scsi_hd_data *data = malloc(sizeof(scsi_hd_data));
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memset(data, 0, sizeof(scsi_hd_data));
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hdd_load(&data->hdd, id, ide_fn[id]);
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if (!data->hdd.f)
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{
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free(data);
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return NULL;
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}
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data->hd_id = id;
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data->bus = bus;
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timer_add(&data->callback_timer, scsi_hd_callback, data, 0);
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return data;
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}
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static void scsi_hd_close(void *p)
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{
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scsi_hd_data *data = p;
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hdd_close(&data->hdd);
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free(data);
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}
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static int scsi_add_data(uint8_t val, void *p)
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{
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scsi_hd_data *data = p;
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// pclog("scsi_add_data : %04x %02x\n", data->data_pos_write, val);
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data->data_in[data->data_pos_write++] = val;
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// if (data->bus_out & BUS_REQ)
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// return -1;
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// data->bus_out = (data->bus_out & ~BUS_DATAMASK) | BUS_SETDATA(val) | BUS_DBP | BUS_REQ;
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return 0;
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}
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static int scsi_get_data(void *p)
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{
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scsi_hd_data *data = p;
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uint8_t val = data->data_out[data->data_pos_read++];
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if (data->data_pos_read > BUFFER_SIZE)
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fatal("scsi_get_data beyond buffer limits\n");
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return val;
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}
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static void scsi_hd_illegal(scsi_hd_data *data)
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{
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data->status = STATUS_CHECK_CONDITION;
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data->sense_key = KEY_ILLEGAL_REQ;
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data->asc = ASC_INVALID_LUN;
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data->ascq = 0;
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}
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#define add_data_len(v) \
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if (i < len) \
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scsi_add_data(v, data); \
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i++;
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static int scsi_hd_command(uint8_t *cdb, void *p)
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{
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scsi_hd_data *data = p;
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int /*addr, */len;
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int i = 0;
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int desc;
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int bus_state = 0;
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// if (data->cmd_pos == CMD_POS_IDLE)
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// pclog("SCSI HD command %02x\n", cdb[0]);
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data->status = STATUS_GOOD;
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data->data_pos_read = data->data_pos_write = 0;
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if ((cdb[0] != SCSI_REQUEST_SENSE/* && cdb[0] != SCSI_INQUIRY*/) && (cdb[1] & 0xe0))
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{
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// pclog("non-zero LUN\n");
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/*Non-zero LUN - abort command*/
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scsi_hd_illegal(data);
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bus_state = BUS_CD | BUS_IO;
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return bus_state;
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}
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switch (cdb[0])
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{
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case SCSI_TEST_UNIT_READY:
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bus_state = BUS_CD | BUS_IO;
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break;
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case SCSI_REZERO_UNIT:
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bus_state = BUS_CD | BUS_IO;
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break;
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case SCSI_REQUEST_SENSE:
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desc = cdb[1] & 1;
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len = cdb[4];
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if (!desc)
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{
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add_data_len(0x70);
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add_data_len(0);
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add_data_len(data->sense_key); /*Sense key*/
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add_data_len(0); /*Information (4 bytes)*/
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0); /*Additional sense length*/
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add_data_len(0); /*Command specific information (4 bytes)*/
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(data->asc); /*ASC*/
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add_data_len(data->ascq); /*ASCQ*/
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add_data_len(0); /*FRU code*/
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add_data_len(0); /*Sense key specific (3 bytes)*/
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add_data_len(0);
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add_data_len(0);
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}
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else
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{
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add_data_len(0x72);
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add_data_len(data->sense_key); /*Sense Key*/
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add_data_len(data->asc); /*ASC*/
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add_data_len(data->ascq); /*ASCQ*/
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0); /*additional sense length*/
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}
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data->sense_key = data->asc = data->ascq = 0;
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data->cmd_pos = CMD_POS_IDLE;
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bus_state = BUS_IO;
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break;
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case SCSI_INQUIRY:
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len = cdb[4] | (cdb[3] << 8);
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// pclog("INQUIRY %d %02x %02x %02x %02x %02x %02x %i\n", len, cdb[0],cdb[1],cdb[2],cdb[3],cdb[4],cdb[5], data->hd_id);
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if (cdb[1] & 0xe0)
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{
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add_data_len(0 | (3 << 5)); /*No physical device on this LUN*/
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}
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else
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{
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add_data_len(0 | (0 << 5)); /*Hard disc*/
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}
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add_data_len(0); /*Not removeable*/
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add_data_len(0); /*No version*/
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add_data_len(2); /*Response data*/
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add_data_len(0); /*Additional length*/
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add_data_len(0);
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add_data_len(0);
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add_data_len(2);
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add_data_len('P');
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add_data_len('C');
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add_data_len('e');
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add_data_len('m');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len('S');
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add_data_len('C');
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add_data_len('S');
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add_data_len('I');
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add_data_len('_');
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add_data_len('H');
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add_data_len('D');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(0); /*Product revision level*/
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0); /*Drive serial number*/
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0); /*Vendor unique*/
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0); /*Vendor descriptor*/
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0); /*Reserved*/
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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add_data_len(0);
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data->cmd_pos = CMD_POS_IDLE;
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bus_state = BUS_IO;
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break;
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case SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL:
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bus_state = BUS_CD | BUS_IO;
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break;
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case SCSI_MODE_SENSE_6:
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len = cdb[4];
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add_data_len(0);
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add_data_len(0);
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add_data_len(0x08);
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add_data_len(0);
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add_data_len((data->hdd.sectors >> 24) & 0xff);
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add_data_len((data->hdd.sectors >> 16) & 0xff);
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add_data_len((data->hdd.sectors >> 8) & 0xff);
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add_data_len( data->hdd.sectors & 0xff);
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add_data_len((512 >> 24) & 0xff);
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add_data_len((512 >> 16) & 0xff);
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add_data_len((512 >> 8) & 0xff);
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add_data_len( 512 & 0xff);
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if ((cdb[2] & 0x3f) == 0x03 || (cdb[2] & 0x3f) == 0x3f)
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{
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add_data_len(3);
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add_data_len(0x16);
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add_data_len(0); add_data_len(1); /*Tracks per zone*/
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add_data_len(0); add_data_len(1); /*Alternate sectors per zone*/
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add_data_len(0); add_data_len(1); /*Alternate tracks per zone*/
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add_data_len(0); add_data_len(1); /*Alternate tracks per volume*/
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add_data_len(1); add_data_len(0); /*Sectors per track*/
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add_data_len(2); add_data_len(0); /*Data bytes per physical sector*/
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add_data_len(0); add_data_len(0); /*Interleave*/
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add_data_len(0); add_data_len(0); /*Track skew*/
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add_data_len(0); add_data_len(0); /*Cylinder skew*/
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add_data_len(0); /*Drive type*/
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add_data_len(0); add_data_len(0); add_data_len(0);
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}
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if ((cdb[2] & 0x3f) == 0x04 || (cdb[2] & 0x3f) == 0x3f)
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{
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add_data_len(4);
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add_data_len(0x16);
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add_data_len(0); add_data_len(0x10); add_data_len(0); /*Cylinder count*/
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add_data_len(64); /*Heads*/
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add_data_len(0); add_data_len(0); add_data_len(0); /*Write recomp*/
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add_data_len(0); add_data_len(0); add_data_len(0); /*Reduced write current*/
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add_data_len(0); add_data_len(0); /*Drive step rate*/
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add_data_len(0); add_data_len(0); add_data_len(0); /*Landing zone cylinder*/
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add_data_len(0); /*RPL*/
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add_data_len(0); /*Rotational offset*/
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add_data_len(0);
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add_data_len(0x10); add_data_len(0); /*Rotain rate*/
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add_data_len(0); add_data_len(0);
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}
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if ((cdb[2] & 0x3f) == 0x30 || (cdb[2] & 0x3f) == 0x3f)
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{
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add_data_len(0xb0);
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add_data_len(0x16);
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add_data_len('P');
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add_data_len('C');
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add_data_len('E');
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add_data_len('M');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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add_data_len(' ');
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}
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for (; len >= 0; len--)
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add_data_len(0);
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len = data->data_pos_write;
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if (cdb[0] == SCSI_MODE_SENSE_6)
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{
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data->data_in[0] = len - 1;
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}
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else
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{
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data->data_in[0] = (len - 2) >> 8;
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data->data_in[1] = (len - 2) & 255;
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}
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// scsi_illegal_field();
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data->cmd_pos = CMD_POS_IDLE;
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bus_state = BUS_IO;
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break;
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case SCSI_READ_CAPACITY_10:
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scsi_add_data((data->hdd.sectors >> 24) & 0xff, data);
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scsi_add_data((data->hdd.sectors >> 16) & 0xff, data);
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scsi_add_data((data->hdd.sectors >> 8) & 0xff, data);
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scsi_add_data( data->hdd.sectors & 0xff, data);
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scsi_add_data((512 >> 24) & 0xff, data);
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scsi_add_data((512 >> 16) & 0xff, data);
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scsi_add_data((512 >> 8) & 0xff, data);
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scsi_add_data( 512 & 0xff, data);
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data->cmd_pos = CMD_POS_IDLE;
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bus_state = BUS_IO;
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break;
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case SCSI_READ_6:
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// pclog("SCSI_READ_6 %i\n", data->cmd_pos);
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if (data->cmd_pos == CMD_POS_WAIT)
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{
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bus_state = BUS_CD;
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break;
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}
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if (data->cmd_pos == CMD_POS_IDLE)
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{
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readflash_set(READFLASH_HDC, data->hd_id);
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data->addr = cdb[3] | (cdb[2] << 8) | ((cdb[1] & 0x1f) << 16);
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data->len = cdb[4];
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if (!data->len)
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data->len = 256;
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// pclog("SCSI_READ_6: addr=%08x len=%04x\n", data->addr, data->len);
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data->cmd_pos = CMD_POS_WAIT;
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timer_set_delay_u64(&data->callback_timer, RW_DELAY);
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data->new_cmd_pos = CMD_POS_START_SECTOR;
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data->sector_pos = 0;
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bus_state = BUS_CD;
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break;
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}
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// else
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// pclog("SCSI_READ_6 continue addr=%08x len=%04x sector_pos=%02x\n", data->addr, data->len, data->sector_pos);
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while (data->len)
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{
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if (data->cmd_pos == CMD_POS_START_SECTOR)
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{
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hdd_read_sectors(&data->hdd, data->addr, 1, data->buf);
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readflash_set(READFLASH_HDC, data->hd_id);
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}
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data->cmd_pos = CMD_POS_TRANSFER;
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for (; data->sector_pos < 512; data->sector_pos++)
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{
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int ret = scsi_add_data(data->buf[data->sector_pos], data);
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if (ret == -1)
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{
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fatal("scsi_add_data -1\n");
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break;
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}
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if (ret & 0x100)
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{
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fatal("scsi_add_data 0x100\n");
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data->len = 1;
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break;
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}
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}
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data->cmd_pos = CMD_POS_START_SECTOR;
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data->sector_pos = 0;
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data->len--;
|
|
data->addr++;
|
|
}
|
|
data->cmd_pos = CMD_POS_IDLE;
|
|
bus_state = BUS_IO;
|
|
break;
|
|
|
|
case SCSI_READ_10:
|
|
// pclog("SCSI_READ_10 %i\n", data->cmd_pos);
|
|
if (data->cmd_pos == CMD_POS_WAIT)
|
|
{
|
|
bus_state = BUS_CD;
|
|
break;
|
|
}
|
|
|
|
if (data->cmd_pos == CMD_POS_IDLE)
|
|
{
|
|
readflash_set(READFLASH_HDC, data->hd_id);
|
|
data->addr = cdb[5] | (cdb[4] << 8) | (cdb[3] << 16) | (cdb[2] << 24);
|
|
data->len = cdb[8] | (cdb[7] << 8);
|
|
// pclog("SCSI_READ_10: addr=%08x len=%04x\n", data->addr, data->len);
|
|
|
|
data->cmd_pos = CMD_POS_WAIT;
|
|
timer_set_delay_u64(&data->callback_timer, RW_DELAY);
|
|
data->new_cmd_pos = CMD_POS_START_SECTOR;
|
|
data->sector_pos = 0;
|
|
|
|
bus_state = BUS_CD;
|
|
break;
|
|
}
|
|
// else
|
|
// pclog("SCSI_READ_10 continue addr=%08x len=%04x sector_pos=%02x\n", data->addr, data->len, data->sector_pos);
|
|
while (data->len)
|
|
{
|
|
if (data->cmd_pos == CMD_POS_START_SECTOR)
|
|
{
|
|
hdd_read_sectors(&data->hdd, data->addr, 1, data->buf);
|
|
readflash_set(READFLASH_HDC, data->hd_id);
|
|
}
|
|
data->cmd_pos = CMD_POS_TRANSFER;
|
|
for (; data->sector_pos < 512; data->sector_pos++)
|
|
{
|
|
int ret = scsi_add_data(data->buf[data->sector_pos], data);
|
|
// pclog("SCSI_READ_10 sector_pos=%i\n", data->sector_pos);
|
|
if (ret == -1)
|
|
{
|
|
fatal("scsi_add_data -1\n");
|
|
break;
|
|
}
|
|
if (ret & 0x100)
|
|
{
|
|
fatal("scsi_add_data 0x100\n");
|
|
data->len = 1;
|
|
break;
|
|
}
|
|
}
|
|
data->cmd_pos = CMD_POS_START_SECTOR;
|
|
|
|
data->sector_pos = 0;
|
|
data->len--;
|
|
data->addr++;
|
|
}
|
|
data->cmd_pos = CMD_POS_IDLE;
|
|
bus_state = BUS_IO;
|
|
break;
|
|
|
|
case SCSI_WRITE_6:
|
|
// pclog("SCSI_WRITE_6 %i\n", data->cmd_pos);
|
|
if (data->cmd_pos == CMD_POS_WAIT)
|
|
{
|
|
bus_state = BUS_CD;
|
|
break;
|
|
}
|
|
if (data->cmd_pos == CMD_POS_IDLE)
|
|
{
|
|
data->addr = cdb[3] | (cdb[2] << 8) | ((cdb[1] & 0x1f) << 16);
|
|
data->len = cdb[4];
|
|
if (!data->len)
|
|
data->len = 256;
|
|
readflash_set(READFLASH_HDC, data->hd_id);
|
|
// pclog("SCSI_WRITE_6: addr=%08x len=%04x\n", data->addr, data->len);
|
|
data->bytes_required = data->len * 512;
|
|
|
|
data->cmd_pos = CMD_POS_WAIT;
|
|
timer_set_delay_u64(&data->callback_timer, RW_DELAY);
|
|
data->new_cmd_pos = CMD_POS_TRANSFER;
|
|
data->sector_pos = 0;
|
|
|
|
bus_state = BUS_CD;
|
|
break;
|
|
}
|
|
if (data->cmd_pos == CMD_POS_TRANSFER && data->bytes_received != data->bytes_required)
|
|
{
|
|
bus_state = 0;
|
|
break;
|
|
}
|
|
|
|
while (data->len)
|
|
{
|
|
for (; data->sector_pos < 512; data->sector_pos++)
|
|
{
|
|
int ret = scsi_get_data(data);
|
|
if (ret == -1)
|
|
{
|
|
fatal("scsi_get_data -1\n");
|
|
break;
|
|
}
|
|
data->buf[data->sector_pos] = ret & 0xff;
|
|
if (ret & 0x100)
|
|
{
|
|
fatal("scsi_get_data 0x100\n");
|
|
data->len = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
hdd_write_sectors(&data->hdd, data->addr, 1, data->buf);
|
|
readflash_set(READFLASH_HDC, data->hd_id);
|
|
|
|
data->sector_pos = 0;
|
|
data->len--;
|
|
data->addr++;
|
|
}
|
|
data->cmd_pos = CMD_POS_IDLE;
|
|
bus_state = BUS_CD | BUS_IO;
|
|
break;
|
|
|
|
case SCSI_WRITE_10:
|
|
// pclog("SCSI_WRITE_10 %i\n", data->cmd_pos);
|
|
if (data->cmd_pos == CMD_POS_WAIT)
|
|
{
|
|
bus_state = BUS_CD;
|
|
break;
|
|
}
|
|
if (data->cmd_pos == CMD_POS_IDLE)
|
|
{
|
|
data->addr = cdb[5] | (cdb[4] << 8) | (cdb[3] << 16) | (cdb[2] << 24);
|
|
data->len = cdb[8] | (cdb[7] << 8);
|
|
readflash_set(READFLASH_HDC, data->hd_id);
|
|
// pclog("SCSI_WRITE_10: addr=%08x len=%04x\n", data->addr, data->len);
|
|
data->bytes_required = data->len * 512;
|
|
|
|
data->cmd_pos = CMD_POS_WAIT;
|
|
timer_set_delay_u64(&data->callback_timer, RW_DELAY);
|
|
data->new_cmd_pos = CMD_POS_TRANSFER;
|
|
data->sector_pos = 0;
|
|
|
|
bus_state = BUS_CD;
|
|
break;
|
|
}
|
|
if (data->cmd_pos == CMD_POS_TRANSFER && data->bytes_received != data->bytes_required)
|
|
{
|
|
bus_state = 0;
|
|
break;
|
|
}
|
|
|
|
while (data->len)
|
|
{
|
|
for (; data->sector_pos < 512; data->sector_pos++)
|
|
{
|
|
int ret = scsi_get_data(data);
|
|
// pclog("SCSI_WRITE_10 sector_pos=%i\n", data->sector_pos);
|
|
if (ret == -1)
|
|
{
|
|
fatal("scsi_get_data -1\n");
|
|
break;
|
|
}
|
|
data->buf[data->sector_pos] = ret & 0xff;
|
|
if (ret & 0x100)
|
|
{
|
|
fatal("scsi_get_data 0x100\n");
|
|
data->len = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
hdd_write_sectors(&data->hdd, data->addr, 1, data->buf);
|
|
readflash_set(READFLASH_HDC, data->hd_id);
|
|
|
|
data->sector_pos = 0;
|
|
data->len--;
|
|
data->addr++;
|
|
}
|
|
data->cmd_pos = CMD_POS_IDLE;
|
|
bus_state = BUS_CD | BUS_IO;
|
|
// output = 3;
|
|
break;
|
|
|
|
case SCSI_VERIFY_10:
|
|
data->cmd_pos = CMD_POS_IDLE;
|
|
bus_state = BUS_CD | BUS_IO;
|
|
break;
|
|
|
|
case SCSI_MODE_SELECT_6:
|
|
if (!data->bytes_received)
|
|
{
|
|
data->bytes_required = cdb[4];
|
|
// pclog("SCSI_MODE_SELECT_6 bytes_required=%i\n", data->bytes_required);
|
|
bus_state = 0;
|
|
break;
|
|
}
|
|
// pclog("SCSI_MODE_SELECT_6 complete\n");
|
|
data->cmd_pos = CMD_POS_IDLE;
|
|
bus_state = BUS_CD | BUS_IO;
|
|
break;
|
|
|
|
case SCSI_FORMAT:
|
|
bus_state = BUS_CD | BUS_IO;
|
|
break;
|
|
|
|
case SCSI_START_STOP_UNIT:
|
|
bus_state = BUS_CD | BUS_IO;
|
|
break;
|
|
|
|
/*These aren't really meaningful in a single initiator system, so just return*/
|
|
case SCSI_RESERVE:
|
|
case SCSI_RELEASE:
|
|
bus_state = BUS_CD | BUS_IO;
|
|
break;
|
|
|
|
case SCSI_SEEK_6:
|
|
case SCSI_SEEK_10:
|
|
bus_state = BUS_CD | BUS_IO;
|
|
break;
|
|
|
|
case SEND_DIAGNOSTIC:
|
|
if (cdb[1] & (1 << 2))
|
|
{
|
|
/*Self-test*/
|
|
/*Always passes*/
|
|
bus_state = BUS_CD | BUS_IO;
|
|
}
|
|
else
|
|
{
|
|
/*Treat all other diagnostic requests as illegal*/
|
|
scsi_hd_illegal(data);
|
|
bus_state = BUS_CD | BUS_IO;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
pclog("Bad SCSI HD command %02x\n", cdb[0]);
|
|
scsi_hd_illegal(data);
|
|
bus_state = BUS_CD | BUS_IO;
|
|
break;
|
|
}
|
|
|
|
return bus_state;
|
|
}
|
|
|
|
static uint8_t scsi_hd_read(void *p)
|
|
{
|
|
scsi_hd_data *data = p;
|
|
|
|
return data->data_in[data->data_pos_read++];
|
|
}
|
|
|
|
static void scsi_hd_write(uint8_t val, void *p)
|
|
{
|
|
scsi_hd_data *data = p;
|
|
|
|
data->data_out[data->data_pos_write++] = val;
|
|
|
|
data->bytes_received++;
|
|
|
|
if (data->data_pos_write > BUFFER_SIZE)
|
|
fatal("Exceeded data_out buffer size\n");
|
|
}
|
|
|
|
static int scsi_hd_read_complete(void *p)
|
|
{
|
|
scsi_hd_data *data = p;
|
|
|
|
return (data->data_pos_read == data->data_pos_write);
|
|
}
|
|
static int scsi_hd_write_complete(void *p)
|
|
{
|
|
scsi_hd_data *data = p;
|
|
|
|
return (data->bytes_received == data->bytes_required);
|
|
}
|
|
|
|
static void scsi_hd_start_command(void *p)
|
|
{
|
|
scsi_hd_data *data = p;
|
|
|
|
data->bytes_received = 0;
|
|
data->bytes_required = 0;
|
|
data->data_pos_read = data->data_pos_write = 0;
|
|
}
|
|
|
|
static uint8_t scsi_hd_get_status(void *p)
|
|
{
|
|
scsi_hd_data *data = p;
|
|
|
|
return data->status;
|
|
}
|
|
|
|
static uint8_t scsi_hd_get_sense_key(void *p)
|
|
{
|
|
scsi_hd_data *data = p;
|
|
|
|
return data->sense_key;
|
|
}
|
|
|
|
static int scsi_hd_get_bytes_required(void *p)
|
|
{
|
|
scsi_hd_data *data = p;
|
|
|
|
return data->bytes_required - data->bytes_received;
|
|
}
|
|
|
|
scsi_device_t scsi_hd =
|
|
{
|
|
scsi_hd_init,
|
|
NULL,
|
|
scsi_hd_close,
|
|
|
|
scsi_hd_start_command,
|
|
scsi_hd_command,
|
|
|
|
scsi_hd_get_status,
|
|
scsi_hd_get_sense_key,
|
|
scsi_hd_get_bytes_required,
|
|
|
|
NULL,
|
|
NULL,
|
|
|
|
scsi_hd_read,
|
|
scsi_hd_write,
|
|
scsi_hd_read_complete,
|
|
scsi_hd_write_complete,
|
|
};
|