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/* |
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* scsi_beos.cpp - SCSI Manager, BeOS specific stuff |
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* |
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* Basilisk II (C) 1997-1999 Christian Bauer |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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|
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#include <string.h> |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <unistd.h> |
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#include <device/scsi.h> |
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#include <drivers/CAM.h> |
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|
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#include "sysdeps.h" |
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#include "main.h" |
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#include "prefs.h" |
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#include "user_strings.h" |
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#include "scsi.h" |
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|
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#define DEBUG 0 |
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#include "debug.h" |
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|
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|
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// Global variables |
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static raw_device_command rdc; |
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|
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static int fds[8*8]; // fd's for 8 units and 8 LUNs each |
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static int fd; // Active fd (selected target) |
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|
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static uint32 buffer_size; // Size of data buffer |
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static uint8 *buffer = NULL; // Pointer to data buffer |
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|
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static uint8 sense_data[256]; // Buffer for autosense data |
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|
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|
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/* |
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* Initialization |
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*/ |
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|
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void SCSIInit(void) |
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{ |
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int id, lun; |
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|
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// Allocate buffer |
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buffer = (uint8 *)malloc(buffer_size = 0x10000); |
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|
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// Open scsi_raw driver for all 8 units (and all 8 LUNs) |
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char dev_name[256]; |
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for (id=0; id<8; id++) { |
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for (lun=0; lun<8; lun++) |
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fds[id*8+lun] = -1; |
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char prefs_name[16]; |
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sprintf(prefs_name, "scsi%d", id); |
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const char *str = PrefsFindString(prefs_name); |
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if (str) { |
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int bus, unit; |
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if (sscanf(str, "%d/%d", &bus, &unit) == 2) { |
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for (lun=0; lun<8; lun++) { |
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sprintf(dev_name, "/dev/bus/scsi/%d/%d/%d/raw", bus, unit, lun); |
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D(bug("SCSI %d: Opening %s\n", id, dev_name)); |
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fds[id*8+lun] = open(dev_name, O_RDWR); |
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} |
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} |
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} |
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} |
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|
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// Reset SCSI bus |
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SCSIReset(); |
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|
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// Init rdc |
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memset(&rdc, 0, sizeof(rdc)); |
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rdc.data = buffer; |
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rdc.sense_data = sense_data; |
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} |
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|
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|
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/* |
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* Deinitialization |
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*/ |
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|
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void SCSIExit(void) |
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{ |
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// Close all devices |
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for (int i=0; i<8; i++) |
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for (int j=0; j<8; j++) { |
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int fd = fds[i*8+j]; |
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if (fd > 0) |
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close(fd); |
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} |
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|
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// Free buffer |
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if (buffer) { |
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free(buffer); |
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buffer = NULL; |
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} |
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} |
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|
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|
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/* |
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* Check if requested data size fits into buffer, allocate new buffer if needed |
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*/ |
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|
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static bool try_buffer(int size) |
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{ |
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if (size <= buffer_size) |
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return true; |
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|
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uint8 *new_buffer = (uint8 *)malloc(size); |
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if (new_buffer == NULL) |
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return false; |
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free(buffer); |
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buffer = new_buffer; |
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buffer_size = size; |
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return true; |
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} |
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|
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|
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/* |
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* Set SCSI command to be sent by scsi_send_cmd() |
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*/ |
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|
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void scsi_set_cmd(int cmd_length, uint8 *cmd) |
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{ |
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rdc.command_length = cmd_length; |
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memcpy(rdc.command, cmd, cmd_length); |
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} |
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|
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|
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/* |
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* Check for presence of SCSI target |
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*/ |
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|
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bool scsi_is_target_present(int id) |
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{ |
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return fds[id * 8] > 0; |
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} |
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|
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|
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/* |
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* Set SCSI target (returns false on error) |
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*/ |
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|
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bool scsi_set_target(int id, int lun) |
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{ |
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int new_fd = fds[id * 8 + lun]; |
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if (new_fd < 0) |
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return false; |
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if (new_fd != fd) |
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rdc.cam_status &= ~CAM_AUTOSNS_VALID; // Clear sense data when selecting new target |
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fd = new_fd; |
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return true; |
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} |
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|
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|
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/* |
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* Send SCSI command to active target (scsi_set_command() must have been called), |
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* read/write data according to S/G table (returns false on error); timeout is in 1/60 sec |
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*/ |
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|
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bool scsi_send_cmd(size_t data_length, bool reading, int sg_size, uint8 **sg_ptr, uint32 *sg_len, uint16 *stat, uint32 timeout) |
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{ |
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// Check if buffer is large enough, allocate new buffer if needed |
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if (!try_buffer(data_length)) { |
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char str[256]; |
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sprintf(str, GetString(STR_SCSI_BUFFER_ERR), data_length); |
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ErrorAlert(str); |
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return false; |
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} |
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|
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// Process S/G table when writing |
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if (!reading) { |
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D(bug(" writing to buffer\n")); |
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uint8 *buffer_ptr = buffer; |
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for (int i=0; i<sg_size; i++) { |
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uint32 len = sg_len[i]; |
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D(bug(" %d bytes from %08lx\n", len, sg_ptr[i])); |
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memcpy(buffer_ptr, sg_ptr[i], len); |
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buffer_ptr += len; |
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} |
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} |
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|
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// Request Sense and autosense data valid? |
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status_t res = B_NO_ERROR; |
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if (rdc.command[0] == 0x03 && (rdc.cam_status & CAM_AUTOSNS_VALID)) { |
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|
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// Yes, fake command |
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D(bug(" autosense\n")); |
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memcpy(buffer, sense_data, 256 - rdc.sense_data_length); |
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rdc.scsi_status = 0; |
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rdc.cam_status = CAM_REQ_CMP; |
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|
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} else { |
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|
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// No, send regular command |
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D(bug(" sending command, length %d\n", data_length)); |
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rdc.flags = (reading ? B_RAW_DEVICE_DATA_IN : 0) | B_RAW_DEVICE_REPORT_RESIDUAL | B_RAW_DEVICE_SHORT_READ_VALID; |
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rdc.data_length = data_length; |
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rdc.sense_data_length = 256; |
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rdc.scsi_status = 0; |
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rdc.cam_status = CAM_REQ_CMP; |
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rdc.timeout = timeout * 16667; |
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res = ioctl(fd, B_RAW_DEVICE_COMMAND, &rdc, sizeof(rdc)); |
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D(bug(" command sent, res %08x, status %d, cam_status %02x\n", res, rdc.scsi_status, rdc.cam_status)); |
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*stat = rdc.scsi_status; |
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} |
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|
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// Process S/G table when reading |
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if (reading && rdc.cam_status == CAM_REQ_CMP) { |
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D(bug(" reading from buffer\n")); |
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uint8 *buffer_ptr = buffer; |
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for (int i=0; i<sg_size; i++) { |
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uint32 len = sg_len[i]; |
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D(bug(" %d bytes to %08lx\n", len, sg_ptr[i])); |
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memcpy(sg_ptr[i], buffer_ptr, len); |
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buffer_ptr += len; |
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} |
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} |
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return res ? false : true; |
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} |
