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- /*
- * scsi_freebsd.cpp - SCSI Manager, FreeBSD SCSI Driver implementation
- * Copyright (C) 1999 Orlando Bassotto
- *
- * 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
- *
- * History:
- * 29-Jun-1999 Started
- * 05-Jul-1999 Changed from array to queue removing the limit of 8
- * devices.
- * Implemented old SCSI management for FreeBSD 2.x.
- * (Note: This implementation hasn't been tested;
- * I don't own anymore a machine with FreeBSD 2.x,
- * so if something goes wrong, please mail me to
- * future@mediabit.net).
- */
-
- #include <sys/ioctl.h>
- #include <sys/types.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <unistd.h>
- #include <fcntl.h>
- #include <ctype.h>
- #include <errno.h>
- #include <err.h>
-
- #ifdef CAM
- #include <cam/cam.h>
- #include <cam/cam_debug.h>
- #include <cam/cam_ccb.h>
- #include <cam/scsi/scsi_all.h>
- #include <cam/scsi/scsi_da.h>
- #include <cam/scsi/scsi_pass.h>
- #include <cam/scsi/scsi_message.h>
- #include <camlib.h>
- #else /* !CAM */
- #include <sys/scsiio.h>
- #include <scsi.h>
- #endif /* !CAM */
-
- #include "sysdeps.h"
- #include "main.h"
- #include "prefs.h"
- #include "user_strings.h"
- #include "scsi.h"
-
- #define DEBUG 0
- #include "debug.h"
-
-
- #undef u_int8_t
- #define u_int8_t unsigned char
-
- typedef struct _SCSIDevice {
- int controller; // SCSI Controller
- int controller_bus; // SCSI Controller Bus
- char controller_name[33]; // SCSI Controller name
- int mac_unit; // Macintosh SCSI ID (remapped)
- int faked_controller; // "Faked" SCSI Controller (Always 0)
- int faked_unit; // "Faked" SCSI ID
- int unit; // Real SCSI ID
- int lun; // Real SCSI LUN
- u_int8_t vendor[16]; // SCSI Vendor
- u_int8_t product[48]; // SCSI Product
- u_int8_t revision[16]; // SCSI Revision
- char device[33]; // SCSI Device
- #ifdef CAM
- char pass_device[33]; // SCSI Pass Device
- #else /* !CAM */
- int dev_fd; // Device File Descriptor
- #endif /* !CAM */
- void* dev_ptr; // Pointer to CAM/SCSI structure
- bool enabled; // Device enabled ?
- struct _SCSIDevice* next; // Pointer to the next device
- } SCSIDevice;
-
- static int nDevices = 0;
- static SCSIDevice* Devices = NULL;
-
- static uint32 buffer_size;
- static uint8* buffer = NULL;
-
- static uint8 the_cmd[12];
- static int the_cmd_len;
-
- static SCSIDevice* CurrentDevice = NULL;
-
- inline static SCSIDevice* _GetSCSIDeviceByID(int id)
- {
- SCSIDevice* aux = Devices;
- while(aux) {
- if(aux->faked_unit==id) {
- return aux;
- }
- aux = aux->next;
- }
- return NULL;
- }
-
- inline static SCSIDevice* _GetSCSIDeviceByIDLUN(int id, int lun)
- {
- SCSIDevice* aux = Devices;
- while(aux) {
- if(aux->faked_unit==id&&aux->lun==lun) {
- return aux;
- }
- aux = aux->next;
- }
- return NULL;
- }
-
- inline static SCSIDevice* _GetSCSIDeviceByMacID(int id)
- {
- SCSIDevice* aux = Devices;
- while(aux) {
- if(aux->mac_unit==id) {
- return aux;
- }
- aux = aux->next;
- }
- return NULL;
- }
-
- inline static SCSIDevice* _GetSCSIDeviceByMacIDLUN(int id, int lun)
- {
- SCSIDevice* aux = Devices;
- while(aux) {
- if(aux->mac_unit==id&&aux->lun==lun) {
- return aux;
- }
- aux = aux->next;
- }
- return NULL;
- }
-
- inline static SCSIDevice* _AllocNewDevice()
- {
- SCSIDevice* aux;
-
- aux = new SCSIDevice;
- if(aux==NULL) return NULL;
- memset(aux, 0, sizeof(SCSIDevice));
- aux->next = Devices;
- Devices = aux;
- return aux;
- }
-
- #ifdef CAM
- inline static struct cam_device* _GetCurrentSCSIDevice()
- {
- if(CurrentDevice==NULL) return NULL;
-
- return (struct cam_device*)CurrentDevice->dev_ptr;
- }
- #else /* !CAM */
- inline static struct scsireq* _GetCurrentSCSIDevice()
- {
- if(CurrentDevice==NULL) return NULL;
-
- return (struct scsireq*)CurrentDevice->dev_ptr;
- }
- #endif /* !CAM */
-
- /*
- * _Build_SCSI_Controller()
- *
- * This function builds a virtual SCSI Controller (Controller=0)
- * where keeps all the devices found, this is due the fact
- * I have two SCSI controllers in my PC. :-)
- * Use scsidump in contrib/ to see how is remapped your
- * SCSI device (only if you have more than one controller,
- * that's for sure :-).
- * If you have only one controller, remapping does not take act.
- */
-
- #define GET_FREE_ID(id) \
- { \
- for(int x=0;x<32;x++) { \
- if(!(busyIDs&(1<<(x+1)))) { \
- id = x; \
- break; \
- } \
- } \
- }
-
- static void _Build_SCSI_Controller()
- {
- unsigned int id = 0;
- unsigned long long busyIDs = 0x0ll;
- SCSIDevice* aux, * dev;
-
- // What IDs are busy?
- dev = Devices;
- while(dev) {
- dev->enabled = false;
- dev->faked_controller = 0;
- dev->faked_unit = dev->unit;
- busyIDs |= (1 << (dev->unit+1));
- dev = dev->next;
- }
-
- // Find out the duplicate IDs and remap them
- dev = Devices, aux = NULL;
- while(dev) {
- aux = dev;
- while(aux) {
- SCSIDevice* dev1, * dev2;
-
- dev1 = dev, dev2 = aux;
-
- if(dev1->controller!=dev2->controller&&
- dev1->unit==dev2->unit) {
- int free_id;
- GET_FREE_ID(free_id);
- busyIDs |= (1<<(free_id+1));
- dev1->faked_unit = free_id;
- }
- aux = aux->next;
- }
- dev = dev->next;
- }
-
- // Now reorder the queue
- #if 0
- dev = Devices;
- while(dev) {
- aux = dev;
- while(aux) {
- SCSIDevice* dev1, * dev2;
-
- dev1 = dev, dev2 = aux;
- if(dev1->faked_unit>dev2->faked_unit) {
- SCSIDevice tmp;
-
- memcpy(&tmp, dev1, sizeof(SCSIDevice));
- memcpy(dev1, dev2, sizeof(SCSIDevice));
- memcpy(dev2, &tmp, sizeof(SCSIDevice));
- }
- aux = aux->next;
- }
- dev = dev->next;
- }
- #endif
-
- // Now open the selected SCSI devices :-)
- for(int n=0;n<8;n++) {
- char tmp[25];
-
- snprintf(tmp, sizeof(tmp), "scsi%d", n);
- const char* scsi = PrefsFindString(tmp);
- if(scsi) {
- int id, lun;
-
- // The format is: RemappedID (or FakedID)/LUN
- sscanf(scsi, "%d/%d", &id, &lun);
-
- SCSIDevice* dev = _GetSCSIDeviceByIDLUN(id, lun);
- if(dev==NULL) continue;
- dev->enabled = true;
- dev->mac_unit = n;
-
- #ifdef CAM
- struct cam_device* cam;
-
- cam = cam_open_btl(dev->controller,
- dev->unit,
- dev->lun, O_RDWR, NULL);
- if(cam==NULL) {
- fprintf(stderr, "Failed to open %d:%d:%d = %s!!!\n",
- dev->controller, dev->unit, dev->lun,
- cam_errbuf);
- }
- dev->dev_ptr = (void*)cam;
- #else /* !CAM */
- dev->dev_fd = scsi_open(dev->device, O_RDWR);
- if(dev->dev_fd<0) {
- perror("Failed to open %d:%d:%d");
- }
- else {
- dev->dev_ptr = (void*)scsireq_new();
- }
- #endif /* !CAM */
- }
- }
- }
-
-
- /*
- * Initialization
- */
-
- void SCSIInit(void)
- {
- // Finds the SCSI hosts in the system filling the SCSIDevices queue.
- // "Stolen" from camcontrol.c
- // Copyright (C) 1997-99 Kenneth D. Merry
- // Old SCSI detection "stolen" from scsi.c
- // Copyright (C) 1993 Julian Elischer
- //
- int bufsize, fd;
- int need_close = 0;
- int error = 0;
- int skip_device = 0;
- SCSIDevice* Dev, * dev, * PrevDev = NULL;
-
- nDevices = 0;
-
- if(PrefsFindBool("noscsi"))
- goto no_scsi;
-
- #ifdef CAM
- union ccb ccb;
- if ((fd = open(XPT_DEVICE, O_RDWR)) == -1) {
- fprintf(stderr, "WARNING: Cannot open CAM device %s (%s)\n", XPT_DEVICE, strerror(errno));
- goto no_scsi;
- }
-
- memset(&(&ccb.ccb_h)[1], 0, sizeof(struct ccb_dev_match)-sizeof(struct ccb_hdr));
- ccb.ccb_h.func_code = XPT_DEV_MATCH;
- bufsize = sizeof(struct dev_match_result) * 100;
- ccb.cdm.match_buf_len = bufsize;
- ccb.cdm.matches = (struct dev_match_result *)malloc(bufsize);
- ccb.cdm.num_matches = 0;
-
- ccb.cdm.num_patterns = 0;
- ccb.cdm.pattern_buf_len = 0;
-
- do {
- Dev = _AllocNewDevice();
- if(ioctl(fd, CAMIOCOMMAND, &ccb)==-1) {
- fprintf(stderr, "Error sending CAMIOCOMMAND ioctl\n");
- return;
- }
-
- if((ccb.ccb_h.status != CAM_REQ_CMP)
- || ((ccb.cdm.status != CAM_DEV_MATCH_LAST)
- && (ccb.cdm.status != CAM_DEV_MATCH_MORE))) {
- fprintf(stderr, "Got CAM error %#x, CDM error %d\n",
- ccb.ccb_h.status, ccb.cdm.status);
- return;
- }
-
- char current_controller_name[33];
- int current_controller = -1;
- for(int i=0;i<ccb.cdm.num_matches;i++) {
- switch(ccb.cdm.matches[i].type) {
- case DEV_MATCH_BUS:
- {
- struct bus_match_result* bus_result;
-
- bus_result = &ccb.cdm.matches[i].result.bus_result;
-
- if(bus_result->path_id==-1) break;
- Dev->controller = bus_result->path_id;
- snprintf(Dev->controller_name, sizeof(Dev->controller_name), "%s%d",
- bus_result->dev_name,
- bus_result->unit_number);
- strncpy(current_controller_name, Dev->controller_name, sizeof(current_controller_name));
- current_controller = Dev->controller;
- Dev->controller_bus = bus_result->bus_id;
- break;
- }
- case DEV_MATCH_DEVICE:
- {
- struct device_match_result* dev_result;
- char tmpstr[256];
-
- dev_result = &ccb.cdm.matches[i].result.device_result;
- if(current_controller==-1||dev_result->target_id==-1) {
- skip_device = 1;
- break;
- }
- else skip_device = 0;
-
- cam_strvis(Dev->vendor, (u_int8_t*)dev_result->inq_data.vendor,
- sizeof(dev_result->inq_data.vendor),
- sizeof(Dev->vendor));
- cam_strvis(Dev->product, (u_int8_t*)dev_result->inq_data.product,
- sizeof(dev_result->inq_data.product),
- sizeof(Dev->product));
- cam_strvis(Dev->revision, (u_int8_t*)dev_result->inq_data.revision,
- sizeof(dev_result->inq_data.revision),
- sizeof(Dev->revision));
- strncpy(Dev->controller_name, current_controller_name, sizeof(Dev->controller_name));
- Dev->controller = current_controller;
- Dev->unit = dev_result->target_id;
- Dev->lun = dev_result->target_lun;
- break;
- }
- case DEV_MATCH_PERIPH:
- {
- struct periph_match_result* periph_result;
-
- periph_result = &ccb.cdm.matches[i].result.periph_result;
-
- if(skip_device != 0) break;
-
- if(need_close==1) {
- snprintf(Dev->device, sizeof(Dev->device), "%s%d*",
- periph_result->periph_name,
- periph_result->unit_number);
- need_close = 0;
- }
- else if(need_close==0) {
- snprintf(Dev->pass_device, sizeof(Dev->pass_device), "%s%d",
- periph_result->periph_name,
- periph_result->unit_number);
- need_close++;
- break;
- }
- else {
- need_close = 0;
- }
- PrevDev = Dev;
- Dev = _AllocNewDevice();
- break;
- }
- }
- }
- } while (ccb.ccb_h.status == CAM_REQ_CMP
- && ccb.cdm.status == CAM_DEV_MATCH_MORE);
-
- /* Remove last one (ugly coding) */
- Devices = PrevDev;
- delete Dev;
- end_loop:
- close(fd);
- #else /* !CAM */
- /*
- * FreeBSD 2.x SCSI management is quiet different and
- * unfortunatly not flexible as CAM library in FreeBSD 3.x...
- * I probe only the first bus, LUN 0, and the
- * first 8 devices only.
- */
- u_char* inq_buf;
- scsireq_t* scsireq;
- struct scsi_addr scsi;
- int ssc_fd;
-
- if((ssc_fd=open("/dev/ssc", O_RDWR))==-1) {
- fprintf(stderr, "Cannot open SCSI manager: /dev/ssc\n");
- SCSIReset();
- return;
- }
-
- inq_buf = (u_char*)malloc(96);
- if(inq_buf==NULL) {
- perror("malloc failed");
- SCSIReset();
- return;
- }
-
- scsireq = scsireq_build((scsireq_t*)dev->dev_ptr,
- 96, inq_buf, SCCMD_READ,
- "12 0 0 0 v 0", 96);
-
- addr.scbus = 0;
- addr.lun = 0;
-
- for(int n=0;n<8;n++) {
- addr.target = n;
-
- if(ioctl(ssc_fd, SCIOCADDR, &addr) != -1) {
- Dev = _AllocNewDevice();
- Dev->controller = addr.scbus;
- Dev->lun = addr.lun;
- Dev->unit = addr.target;
-
- struct scsi_devinfo devInfo;
- devInfo.addr = addr;
- if(ioctl(ssc_fd, SCIOCGETDEVINFO, &devInfo) != -1) {
- strncpy(Dev->device, devInfo.devname, sizeof(Dev->device));
- }
- strncpy(Dev->controller_name, "FreeBSD 2.x SCSI Manager", sizeof(Dev->controller_name));
- if(scsireq_enter(ssc_fd, scsireq)!=-1) {
- Dev->vendor[sizeof(Dev->vendor)-1] = 0;
- Dev->product[sizeof(Dev->product)-1] = 0;
- Dev->revision[sizeof(Dev->revision)-1] = 0;
-
- scsireq_decode(scsireq, "s8 c8 c16 c4",
- Dev->vendor, Dev->product, Dev->revision);
- }
- }
- }
- free(inq_buf);
- close(ssc_fd);
- #endif /* !CAM */
- _Build_SCSI_Controller();
-
- // Print out the periph with ID:LUNs
- fprintf(stderr, "Device RealID FkdID MacID Enabled\n");
- fprintf(stderr, "-------------------------------------------------------------\n");
- // 012345678901234567890123456789012 0:0:0 0/0 0:0 Yes
- dev = Devices;
- while(dev) {
- char tmp[40];
- snprintf(tmp, sizeof(tmp), "%s %s %s",
- dev->vendor,
- dev->product,
- dev->revision);
- fprintf(stderr, "%-33s %d:%d:%d %d/%d %d:%d %s\n",
- tmp, dev->controller, dev->unit, dev->lun,
- dev->faked_unit, dev->lun,
- dev->mac_unit, dev->lun, dev->enabled?"Yes":"No");
- dev = dev->next;
- }
-
- no_scsi:
- // Reset SCSI bus
- SCSIReset();
- }
-
-
- /*
- * Deinitialization
- */
-
- void SCSIExit(void)
- {
- SCSIDevice* aux;
- while(Devices) {
- aux = Devices->next;
- if(Devices->dev_ptr!=NULL) {
- #ifdef CAM
- cam_close_device((struct cam_device*)Devices->dev_ptr);
- #else /* !CAM */
- free(Devices->dev_ptr); // Is this right?
- close(Devices->dev_fd); // And this one?
- #endif /* !CAM */
- }
- delete Devices;
- Devices = aux;
- }
- nDevices = 0;
- }
-
-
- /*
- * Set SCSI command to be sent by scsi_send_cmd()
- */
-
- void scsi_set_cmd(int cmd_length, uint8 *cmd)
- {
- the_cmd_len = cmd_length;
- memset(the_cmd, 0, sizeof(the_cmd));
- memcpy(the_cmd, cmd, the_cmd_len);
- }
-
-
- /*
- * Check for presence of SCSI target
- */
-
- bool scsi_is_target_present(int id)
- {
- return (_GetSCSIDeviceByMacID(id)!=NULL&&_GetSCSIDeviceByMacID(id)->enabled);
- }
-
-
- /*
- * Set SCSI target (returns false on error)
- */
-
- bool scsi_set_target(int id, int lun)
- {
- SCSIDevice* dev;
-
- dev = _GetSCSIDeviceByMacIDLUN(id, lun);
- if(dev==NULL) return false;
- CurrentDevice = dev;
- 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)
- */
-
- static bool try_buffer(int size)
- {
- if(size <= buffer_size) {
- return true;
- }
-
- D(bug("Allocating buffer of %d bytes.\n", size));
- uint8* new_buffer = (uint8*)valloc(size);
- if(new_buffer==NULL) {
- return false;
- }
- if(buffer!=NULL) free(buffer);
- buffer = new_buffer;
- buffer_size = size;
- return true;
- }
-
- bool scsi_send_cmd(size_t data_length, bool reading, int sg_size, uint8 **sg_ptr, uint32 *sg_len, uint16 *stat, uint32 timeout)
- {
- int value = 0;
- #ifdef CAM
- #ifdef VERBOSE_CAM_DEBUG
- D(bug("Sending command %x (len=%d) to SCSI Device %d:%d:%d\n", the_cmd[0],
- the_cmd_len,
- CurrentDevice->controller,
- CurrentDevice->unit,
- CurrentDevice->lun));
- D(bug("DataLength: %d\n", data_length));
- D(bug("Reading: %d\n", reading));
- D(bug("SG Size: %d\n", sg_size));
- D(bug("Timeout: %d\n", timeout));
- #endif /* VERBOSE_CAM_DEBUG */
- #endif /* CAM */
- if(!try_buffer(data_length)) {
- char str[256];
- sprintf(str, GetString(STR_SCSI_BUFFER_ERR), data_length);
- ErrorAlert(str);
- return false;
- }
-
- if(!reading) {
- uint8* buffer_ptr = buffer;
- for(int i=0;i<sg_size;i++) {
- uint32 len = sg_len[i];
- memcpy(buffer, sg_ptr[i], len);
- buffer_ptr += len;
- }
- }
-
- if(the_cmd[0] == 0x03) {
- // faked cmd
- *stat = 0;
- return true;
- }
-
-
- #ifdef CAM
- struct cam_device* device = _GetCurrentSCSIDevice();
- if(device==NULL) return false;
-
- union ccb ccb;
-
- memset(&ccb, 0, sizeof(ccb));
-
- int dir_flags = CAM_DIR_NONE;
- if(data_length>0) {
- dir_flags = reading?CAM_DIR_IN:CAM_DIR_OUT;
- }
-
- ccb.ccb_h.path_id = CurrentDevice->controller;
- ccb.ccb_h.target_id = CurrentDevice->unit;
- ccb.ccb_h.target_lun = CurrentDevice->lun;
-
- cam_fill_csio(&ccb.csio,
- 0,
- NULL,
- dir_flags,
- MSG_SIMPLE_Q_TAG,
- (u_int8_t*)buffer,
- data_length,
- SSD_FULL_SIZE,
- the_cmd_len,
- (timeout?timeout:50)*1000);
-
- ccb.ccb_h.flags |= CAM_DEV_QFRZDIS;
-
- memcpy(ccb.csio.cdb_io.cdb_bytes, the_cmd, the_cmd_len);
-
- if(cam_send_ccb(device, &ccb)<0) {
- fprintf(stderr, "%d:%d:%d ", CurrentDevice->controller,
- CurrentDevice->unit, CurrentDevice->lun);
- perror("cam_send_ccb");
- return false;
- }
-
- value = ccb.ccb_h.status;
- *stat = ccb.csio.scsi_status;
-
- if((value & CAM_STATUS_MASK) != CAM_REQ_CMP) {
- char tmp[4096];
- if((value & CAM_STATUS_MASK) == CAM_SCSI_STATUS_ERROR) {
- scsi_sense_string(device, &ccb.csio, tmp, sizeof(tmp));
- fprintf(stderr, "SCSI Status Error:\n%s\n", tmp);
- return false;
- }
- }
- #else /* !CAM */
- struct scsireq* scsireq = _GetCurrentSCSIDevice();
- if(device==NULL) return false;
-
- int dir_flags = 0x00;
- if(data_length>0) dir_flags = reading?SCCMD_READ:SCCMD_WRITE;
-
- scsireq_reset(scsireq);
- scsireq->timeout = (timeout?timeout:50)*1000;
- scsireq_build(scsireq, data_length,
- (caddr_t)buffer, dir_flags,
- "0");
- memcpy(scsireq->cmd, the_cmd, scsireq->cmdlen = the_cmd_len);
-
- int result = scsi_enter(dev->dev_fd, scsireq);
- if(SCSIREQ_ERROR(result)) {
- scsi_debug(stderr, result, scsireq);
- }
- *stat = scsireq->status;
- #endif /* !CAM */
-
- if(reading) {
- uint8* buffer_ptr = buffer;
- for(int i=0;i<sg_size;i++) {
- uint32 len = sg_len[i];
- memcpy(sg_ptr[i], buffer_ptr, len);
- #ifdef CAM
- #ifdef VERBOSE_CAM_DEBUG
- static char line[16];
- for(int r=0, x=0;x<len;x++) {
- if(x!=0&&x%16==0) { D(bug("%s\n", line)); r = 0; }
- line[r++] = isprint(sg_ptr[i][x])?sg_ptr[i][x]:'.';
- line[r] = 0;
- D(bug("%02x ", sg_ptr[i][x]));
- }
- #endif /* VERBOSE_CAM_DEBUG */
- #endif /* CAM */
- buffer_ptr += len;
- }
- }
- return true;
- }
-