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scsi_freebsd.cpp
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1999-10-03
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744 lines
/*
* scsi_freebsd.cpp - SCSI Manager, FreeBSD SCSI Driver implementation
* Copyright (C) 1999 Orlando Bassotto
*
* Basilisk II (C) 1997-1999 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;
}