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- /*
- * scsi_beos.cpp - SCSI Manager, BeOS specific stuff
- *
- * Basilisk II (C) 1997-2001 Christian Bauer
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
- #include <string.h>
- #include <stdlib.h>
- #include <stdio.h>
- #include <unistd.h>
- #include <device/scsi.h>
- #include <drivers/CAM.h>
-
- #include "sysdeps.h"
- #include "main.h"
- #include "prefs.h"
- #include "user_strings.h"
- #include "scsi.h"
-
- #define DEBUG 0
- #include "debug.h"
-
-
- // Global variables
- static raw_device_command rdc;
-
- static int fds[8*8]; // fd's for 8 units and 8 LUNs each
- static int fd; // Active fd (selected target)
-
- static uint32 buffer_size; // Size of data buffer
- static uint8 *buffer = NULL; // Pointer to data buffer
-
- static uint8 sense_data[256]; // Buffer for autosense data
-
-
- /*
- * Initialization
- */
-
- void SCSIInit(void)
- {
- int id, lun;
-
- // Allocate buffer
- buffer = (uint8 *)malloc(buffer_size = 0x10000);
-
- // Open scsi_raw driver for all 8 units (and all 8 LUNs)
- char dev_name[256];
- for (id=0; id<8; id++) {
- for (lun=0; lun<8; lun++)
- fds[id*8+lun] = -1;
- char prefs_name[16];
- sprintf(prefs_name, "scsi%d", id);
- const char *str = PrefsFindString(prefs_name);
- if (str) {
- int bus, unit;
- if (sscanf(str, "%d/%d", &bus, &unit) == 2) {
- for (lun=0; lun<8; lun++) {
- sprintf(dev_name, "/dev/bus/scsi/%d/%d/%d/raw", bus, unit, lun);
- D(bug("SCSI %d: Opening %s\n", id, dev_name));
- fds[id*8+lun] = open(dev_name, O_RDWR);
- }
- }
- }
- }
-
- // Reset SCSI bus
- SCSIReset();
-
- // Init rdc
- memset(&rdc, 0, sizeof(rdc));
- rdc.data = buffer;
- rdc.sense_data = sense_data;
- }
-
-
- /*
- * Deinitialization
- */
-
- void SCSIExit(void)
- {
- // Close all devices
- for (int i=0; i<8; i++)
- for (int j=0; j<8; j++) {
- int fd = fds[i*8+j];
- if (fd > 0)
- close(fd);
- }
-
- // Free buffer
- if (buffer) {
- free(buffer);
- buffer = NULL;
- }
- }
-
-
- /*
- * Check if requested data size fits into buffer, allocate new buffer if needed
- */
-
- static bool try_buffer(int size)
- {
- if (size <= buffer_size)
- return true;
-
- uint8 *new_buffer = (uint8 *)malloc(size);
- if (new_buffer == NULL)
- return false;
- free(buffer);
- buffer = new_buffer;
- buffer_size = size;
- return true;
- }
-
-
- /*
- * Set SCSI command to be sent by scsi_send_cmd()
- */
-
- void scsi_set_cmd(int cmd_length, uint8 *cmd)
- {
- rdc.command_length = cmd_length;
- memcpy(rdc.command, cmd, cmd_length);
- }
-
-
- /*
- * Check for presence of SCSI target
- */
-
- bool scsi_is_target_present(int id)
- {
- return fds[id * 8] > 0;
- }
-
-
- /*
- * Set SCSI target (returns false on error)
- */
-
- bool scsi_set_target(int id, int lun)
- {
- int new_fd = fds[id * 8 + lun];
- if (new_fd < 0)
- return false;
- if (new_fd != fd)
- rdc.cam_status &= ~CAM_AUTOSNS_VALID; // Clear sense data when selecting new target
- fd = new_fd;
- return true;
- }
-
-
- /*
- * Send SCSI command to active target (scsi_set_command() must have been called),
- * read/write data according to S/G table (returns false on error); timeout is in 1/60 sec
- */
-
- bool scsi_send_cmd(size_t data_length, bool reading, int sg_size, uint8 **sg_ptr, uint32 *sg_len, uint16 *stat, uint32 timeout)
- {
- // Check if buffer is large enough, allocate new buffer if needed
- if (!try_buffer(data_length)) {
- char str[256];
- sprintf(str, GetString(STR_SCSI_BUFFER_ERR), data_length);
- ErrorAlert(str);
- return false;
- }
-
- // Process S/G table when writing
- if (!reading) {
- D(bug(" writing to buffer\n"));
- uint8 *buffer_ptr = buffer;
- for (int i=0; i<sg_size; i++) {
- uint32 len = sg_len[i];
- D(bug(" %d bytes from %08lx\n", len, sg_ptr[i]));
- memcpy(buffer_ptr, sg_ptr[i], len);
- buffer_ptr += len;
- }
- }
-
- // Request Sense and autosense data valid?
- status_t res = B_NO_ERROR;
- if (rdc.command[0] == 0x03 && (rdc.cam_status & CAM_AUTOSNS_VALID)) {
-
- // Yes, fake command
- D(bug(" autosense\n"));
- memcpy(buffer, sense_data, 256 - rdc.sense_data_length);
- rdc.scsi_status = 0;
- rdc.cam_status = CAM_REQ_CMP;
-
- } else {
-
- // No, send regular command
- D(bug(" sending command, length %d\n", data_length));
- rdc.flags = (reading ? B_RAW_DEVICE_DATA_IN : 0) | B_RAW_DEVICE_REPORT_RESIDUAL | B_RAW_DEVICE_SHORT_READ_VALID;
- rdc.data_length = data_length;
- rdc.sense_data_length = 256;
- rdc.scsi_status = 0;
- rdc.cam_status = CAM_REQ_CMP;
- rdc.timeout = timeout * 16667;
- res = ioctl(fd, B_RAW_DEVICE_COMMAND, &rdc, sizeof(rdc));
- D(bug(" command sent, res %08x, status %d, cam_status %02x\n", res, rdc.scsi_status, rdc.cam_status));
- *stat = rdc.scsi_status;
- }
-
- // Process S/G table when reading
- if (reading && rdc.cam_status == CAM_REQ_CMP) {
- D(bug(" reading from buffer\n"));
- uint8 *buffer_ptr = buffer;
- for (int i=0; i<sg_size; i++) {
- uint32 len = sg_len[i];
- D(bug(" %d bytes to %08lx\n", len, sg_ptr[i]));
- memcpy(sg_ptr[i], buffer_ptr, len);
- buffer_ptr += len;
- }
- }
- return res ? false : true;
- }
-