Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 | /*
* linux/drivers/message/fusion/mptfc.c
* For use with LSI Logic PCI chip/adapter(s)
* running LSI Logic Fusion MPT (Message Passing Technology) firmware.
*
* Copyright (c) 1999-2005 LSI Logic Corporation
* (mailto:mpt_linux_developer@lsil.com)
*
*/
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*
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; version 2 of the License.
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.
NO WARRANTY
THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
solely responsible for determining the appropriateness of using and
distributing the Program and assumes all risks associated with its
exercise of rights under this Agreement, including but not limited to
the risks and costs of program errors, damage to or loss of data,
programs or equipment, and unavailability or interruption of operations.
DISCLAIMER OF LIABILITY
NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
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 "linux_compat.h" /* linux-2.6 tweaks */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/kdev_t.h>
#include <linux/blkdev.h>
#include <linux/delay.h> /* for mdelay */
#include <linux/interrupt.h> /* needed for in_interrupt() proto */
#include <linux/reboot.h> /* notifier code */
#include <linux/sched.h>
#include <linux/workqueue.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include "mptbase.h"
#include "mptscsih.h"
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
#define my_NAME "Fusion MPT FC Host driver"
#define my_VERSION MPT_LINUX_VERSION_COMMON
#define MYNAM "mptfc"
MODULE_AUTHOR(MODULEAUTHOR);
MODULE_DESCRIPTION(my_NAME);
MODULE_LICENSE("GPL");
/* Command line args */
static int mpt_pq_filter = 0;
module_param(mpt_pq_filter, int, 0);
MODULE_PARM_DESC(mpt_pq_filter, " Enable peripheral qualifier filter: enable=1 (default=0)");
static int mptfcDoneCtx = -1;
static int mptfcTaskCtx = -1;
static int mptfcInternalCtx = -1; /* Used only for internal commands */
static struct scsi_host_template mptfc_driver_template = {
.proc_name = "mptfc",
.proc_info = mptscsih_proc_info,
.name = "MPT FC Host",
.info = mptscsih_info,
.queuecommand = mptscsih_qcmd,
.slave_alloc = mptscsih_slave_alloc,
.slave_configure = mptscsih_slave_configure,
.slave_destroy = mptscsih_slave_destroy,
.change_queue_depth = mptscsih_change_queue_depth,
.eh_abort_handler = mptscsih_abort,
.eh_device_reset_handler = mptscsih_dev_reset,
.eh_bus_reset_handler = mptscsih_bus_reset,
.eh_host_reset_handler = mptscsih_host_reset,
.bios_param = mptscsih_bios_param,
.can_queue = MPT_FC_CAN_QUEUE,
.this_id = -1,
.sg_tablesize = MPT_SCSI_SG_DEPTH,
.max_sectors = 8192,
.cmd_per_lun = 7,
.use_clustering = ENABLE_CLUSTERING,
};
/****************************************************************************
* Supported hardware
*/
static struct pci_device_id mptfc_pci_table[] = {
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC909,
PCI_ANY_ID, PCI_ANY_ID },
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC919,
PCI_ANY_ID, PCI_ANY_ID },
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC929,
PCI_ANY_ID, PCI_ANY_ID },
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC919X,
PCI_ANY_ID, PCI_ANY_ID },
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC929X,
PCI_ANY_ID, PCI_ANY_ID },
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC939X,
PCI_ANY_ID, PCI_ANY_ID },
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC949X,
PCI_ANY_ID, PCI_ANY_ID },
{0} /* Terminating entry */
};
MODULE_DEVICE_TABLE(pci, mptfc_pci_table);
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*
* mptfc_probe - Installs scsi devices per bus.
* @pdev: Pointer to pci_dev structure
*
* Returns 0 for success, non-zero for failure.
*
*/
static int
mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct Scsi_Host *sh;
MPT_SCSI_HOST *hd;
MPT_ADAPTER *ioc;
unsigned long flags;
int sz, ii;
int numSGE = 0;
int scale;
int ioc_cap;
u8 *mem;
int error=0;
int r;
if ((r = mpt_attach(pdev,id)) != 0)
return r;
ioc = pci_get_drvdata(pdev);
ioc->DoneCtx = mptfcDoneCtx;
ioc->TaskCtx = mptfcTaskCtx;
ioc->InternalCtx = mptfcInternalCtx;
/* Added sanity check on readiness of the MPT adapter.
*/
if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
printk(MYIOC_s_WARN_FMT
"Skipping because it's not operational!\n",
ioc->name);
return -ENODEV;
}
if (!ioc->active) {
printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
ioc->name);
return -ENODEV;
}
/* Sanity check - ensure at least 1 port is INITIATOR capable
*/
ioc_cap = 0;
for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
if (ioc->pfacts[ii].ProtocolFlags &
MPI_PORTFACTS_PROTOCOL_INITIATOR)
ioc_cap ++;
}
if (!ioc_cap) {
printk(MYIOC_s_WARN_FMT
"Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
ioc->name, ioc);
return 0;
}
sh = scsi_host_alloc(&mptfc_driver_template, sizeof(MPT_SCSI_HOST));
if (!sh) {
printk(MYIOC_s_WARN_FMT
"Unable to register controller with SCSI subsystem\n",
ioc->name);
return -1;
}
spin_lock_irqsave(&ioc->FreeQlock, flags);
/* Attach the SCSI Host to the IOC structure
*/
ioc->sh = sh;
sh->io_port = 0;
sh->n_io_port = 0;
sh->irq = 0;
/* set 16 byte cdb's */
sh->max_cmd_len = 16;
sh->max_id = MPT_MAX_FC_DEVICES<256 ? MPT_MAX_FC_DEVICES : 255;
sh->max_lun = MPT_LAST_LUN + 1;
sh->max_channel = 0;
sh->this_id = ioc->pfacts[0].PortSCSIID;
/* Required entry.
*/
sh->unique_id = ioc->id;
/* Verify that we won't exceed the maximum
* number of chain buffers
* We can optimize: ZZ = req_sz/sizeof(SGE)
* For 32bit SGE's:
* numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
* + (req_sz - 64)/sizeof(SGE)
* A slightly different algorithm is required for
* 64bit SGEs.
*/
scale = ioc->req_sz/(sizeof(dma_addr_t) + sizeof(u32));
if (sizeof(dma_addr_t) == sizeof(u64)) {
numSGE = (scale - 1) *
(ioc->facts.MaxChainDepth-1) + scale +
(ioc->req_sz - 60) / (sizeof(dma_addr_t) +
sizeof(u32));
} else {
numSGE = 1 + (scale - 1) *
(ioc->facts.MaxChainDepth-1) + scale +
(ioc->req_sz - 64) / (sizeof(dma_addr_t) +
sizeof(u32));
}
if (numSGE < sh->sg_tablesize) {
/* Reset this value */
dprintk((MYIOC_s_INFO_FMT
"Resetting sg_tablesize to %d from %d\n",
ioc->name, numSGE, sh->sg_tablesize));
sh->sg_tablesize = numSGE;
}
spin_unlock_irqrestore(&ioc->FreeQlock, flags);
hd = (MPT_SCSI_HOST *) sh->hostdata;
hd->ioc = ioc;
/* SCSI needs scsi_cmnd lookup table!
* (with size equal to req_depth*PtrSz!)
*/
sz = ioc->req_depth * sizeof(void *);
mem = kmalloc(sz, GFP_ATOMIC);
if (mem == NULL) {
error = -ENOMEM;
goto mptfc_probe_failed;
}
memset(mem, 0, sz);
hd->ScsiLookup = (struct scsi_cmnd **) mem;
dprintk((MYIOC_s_INFO_FMT "ScsiLookup @ %p, sz=%d\n",
ioc->name, hd->ScsiLookup, sz));
/* Allocate memory for the device structures.
* A non-Null pointer at an offset
* indicates a device exists.
* max_id = 1 + maximum id (hosts.h)
*/
sz = sh->max_id * sizeof(void *);
mem = kmalloc(sz, GFP_ATOMIC);
if (mem == NULL) {
error = -ENOMEM;
goto mptfc_probe_failed;
}
memset(mem, 0, sz);
hd->Targets = (VirtDevice **) mem;
dprintk((KERN_INFO
" Targets @ %p, sz=%d\n", hd->Targets, sz));
/* Clear the TM flags
*/
hd->tmPending = 0;
hd->tmState = TM_STATE_NONE;
hd->resetPending = 0;
hd->abortSCpnt = NULL;
/* Clear the pointer used to store
* single-threaded commands, i.e., those
* issued during a bus scan, dv and
* configuration pages.
*/
hd->cmdPtr = NULL;
/* Initialize this SCSI Hosts' timers
* To use, set the timer expires field
* and add_timer
*/
init_timer(&hd->timer);
hd->timer.data = (unsigned long) hd;
hd->timer.function = mptscsih_timer_expired;
hd->mpt_pq_filter = mpt_pq_filter;
ddvprintk((MYIOC_s_INFO_FMT
"mpt_pq_filter %x\n",
ioc->name,
mpt_pq_filter));
init_waitqueue_head(&hd->scandv_waitq);
hd->scandv_wait_done = 0;
hd->last_queue_full = 0;
error = scsi_add_host (sh, &ioc->pcidev->dev);
if(error) {
dprintk((KERN_ERR MYNAM
"scsi_add_host failed\n"));
goto mptfc_probe_failed;
}
scsi_scan_host(sh);
return 0;
mptfc_probe_failed:
mptscsih_remove(pdev);
return error;
}
static struct pci_driver mptfc_driver = {
.name = "mptfc",
.id_table = mptfc_pci_table,
.probe = mptfc_probe,
.remove = __devexit_p(mptscsih_remove),
.shutdown = mptscsih_shutdown,
#ifdef CONFIG_PM
.suspend = mptscsih_suspend,
.resume = mptscsih_resume,
#endif
};
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/**
* mptfc_init - Register MPT adapter(s) as SCSI host(s) with
* linux scsi mid-layer.
*
* Returns 0 for success, non-zero for failure.
*/
static int __init
mptfc_init(void)
{
show_mptmod_ver(my_NAME, my_VERSION);
mptfcDoneCtx = mpt_register(mptscsih_io_done, MPTFC_DRIVER);
mptfcTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTFC_DRIVER);
mptfcInternalCtx = mpt_register(mptscsih_scandv_complete, MPTFC_DRIVER);
if (mpt_event_register(mptfcDoneCtx, mptscsih_event_process) == 0) {
devtprintk((KERN_INFO MYNAM
": Registered for IOC event notifications\n"));
}
if (mpt_reset_register(mptfcDoneCtx, mptscsih_ioc_reset) == 0) {
dprintk((KERN_INFO MYNAM
": Registered for IOC reset notifications\n"));
}
return pci_register_driver(&mptfc_driver);
}
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/**
* mptfc_exit - Unregisters MPT adapter(s)
*
*/
static void __exit
mptfc_exit(void)
{
pci_unregister_driver(&mptfc_driver);
mpt_reset_deregister(mptfcDoneCtx);
dprintk((KERN_INFO MYNAM
": Deregistered for IOC reset notifications\n"));
mpt_event_deregister(mptfcDoneCtx);
dprintk((KERN_INFO MYNAM
": Deregistered for IOC event notifications\n"));
mpt_deregister(mptfcInternalCtx);
mpt_deregister(mptfcTaskCtx);
mpt_deregister(mptfcDoneCtx);
}
module_init(mptfc_init);
module_exit(mptfc_exit);
|