2 * linux/drivers/message/fusion/mptspi.c
3 * For use with LSI Logic PCI chip/adapter(s)
4 * running LSI Logic Fusion MPT (Message Passing Technology) firmware.
6 * Copyright (c) 1999-2005 LSI Logic Corporation
7 * (mailto:mpt_linux_developer@lsil.com)
10 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; version 2 of the License.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
22 THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
23 CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
24 LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
25 MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
26 solely responsible for determining the appropriateness of using and
27 distributing the Program and assumes all risks associated with its
28 exercise of rights under this Agreement, including but not limited to
29 the risks and costs of program errors, damage to or loss of data,
30 programs or equipment, and unavailability or interruption of operations.
32 DISCLAIMER OF LIABILITY
33 NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
34 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
35 DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
36 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
37 TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
38 USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
39 HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
41 You should have received a copy of the GNU General Public License
42 along with this program; if not, write to the Free Software
43 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
45 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
47 #include "linux_compat.h" /* linux-2.6 tweaks */
48 #include <linux/module.h>
49 #include <linux/kernel.h>
50 #include <linux/init.h>
51 #include <linux/errno.h>
52 #include <linux/kdev_t.h>
53 #include <linux/blkdev.h>
54 #include <linux/delay.h> /* for mdelay */
55 #include <linux/interrupt.h> /* needed for in_interrupt() proto */
56 #include <linux/reboot.h> /* notifier code */
57 #include <linux/sched.h>
58 #include <linux/workqueue.h>
60 #include <scsi/scsi.h>
61 #include <scsi/scsi_cmnd.h>
62 #include <scsi/scsi_device.h>
63 #include <scsi/scsi_host.h>
64 #include <scsi/scsi_tcq.h>
69 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
70 #define my_NAME "Fusion MPT SPI Host driver"
71 #define my_VERSION MPT_LINUX_VERSION_COMMON
72 #define MYNAM "mptspi"
74 MODULE_AUTHOR(MODULEAUTHOR);
75 MODULE_DESCRIPTION(my_NAME);
76 MODULE_LICENSE("GPL");
78 /* Command line args */
79 #ifdef MPTSCSIH_ENABLE_DOMAIN_VALIDATION
80 static int mpt_dv = MPTSCSIH_DOMAIN_VALIDATION;
81 module_param(mpt_dv, int, 0);
82 MODULE_PARM_DESC(mpt_dv, " DV Algorithm: enhanced=1, basic=0 (default=MPTSCSIH_DOMAIN_VALIDATION=1)");
84 static int mpt_width = MPTSCSIH_MAX_WIDTH;
85 module_param(mpt_width, int, 0);
86 MODULE_PARM_DESC(mpt_width, " Max Bus Width: wide=1, narrow=0 (default=MPTSCSIH_MAX_WIDTH=1)");
88 static ushort mpt_factor = MPTSCSIH_MIN_SYNC;
89 module_param(mpt_factor, ushort, 0);
90 MODULE_PARM_DESC(mpt_factor, " Min Sync Factor (default=MPTSCSIH_MIN_SYNC=0x08)");
93 static int mpt_saf_te = MPTSCSIH_SAF_TE;
94 module_param(mpt_saf_te, int, 0);
95 MODULE_PARM_DESC(mpt_saf_te, " Force enabling SEP Processor: enable=1 (default=MPTSCSIH_SAF_TE=0)");
97 static int mpt_pq_filter = 0;
98 module_param(mpt_pq_filter, int, 0);
99 MODULE_PARM_DESC(mpt_pq_filter, " Enable peripheral qualifier filter: enable=1 (default=0)");
101 static int mptspiDoneCtx = -1;
102 static int mptspiTaskCtx = -1;
103 static int mptspiInternalCtx = -1; /* Used only for internal commands */
105 static struct scsi_host_template mptspi_driver_template = {
106 .module = THIS_MODULE,
107 .proc_name = "mptspi",
108 .proc_info = mptscsih_proc_info,
109 .name = "MPT SPI Host",
110 .info = mptscsih_info,
111 .queuecommand = mptscsih_qcmd,
112 .slave_alloc = mptscsih_slave_alloc,
113 .slave_configure = mptscsih_slave_configure,
114 .slave_destroy = mptscsih_slave_destroy,
115 .change_queue_depth = mptscsih_change_queue_depth,
116 .eh_abort_handler = mptscsih_abort,
117 .eh_device_reset_handler = mptscsih_dev_reset,
118 .eh_bus_reset_handler = mptscsih_bus_reset,
119 .eh_host_reset_handler = mptscsih_host_reset,
120 .bios_param = mptscsih_bios_param,
121 .can_queue = MPT_SCSI_CAN_QUEUE,
123 .sg_tablesize = MPT_SCSI_SG_DEPTH,
126 .use_clustering = ENABLE_CLUSTERING,
130 /****************************************************************************
134 static struct pci_device_id mptspi_pci_table[] = {
135 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1030,
136 PCI_ANY_ID, PCI_ANY_ID },
137 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_1030_53C1035,
138 PCI_ANY_ID, PCI_ANY_ID },
139 {0} /* Terminating entry */
141 MODULE_DEVICE_TABLE(pci, mptspi_pci_table);
143 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
144 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
146 * mptspi_probe - Installs scsi devices per bus.
147 * @pdev: Pointer to pci_dev structure
149 * Returns 0 for success, non-zero for failure.
153 mptspi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
155 struct Scsi_Host *sh;
167 if ((r = mpt_attach(pdev,id)) != 0)
170 ioc = pci_get_drvdata(pdev);
171 ioc->DoneCtx = mptspiDoneCtx;
172 ioc->TaskCtx = mptspiTaskCtx;
173 ioc->InternalCtx = mptspiInternalCtx;
175 /* Added sanity check on readiness of the MPT adapter.
177 if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
178 printk(MYIOC_s_WARN_FMT
179 "Skipping because it's not operational!\n",
185 printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
190 /* Sanity check - ensure at least 1 port is INITIATOR capable
193 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
194 if (ioc->pfacts[ii].ProtocolFlags &
195 MPI_PORTFACTS_PROTOCOL_INITIATOR)
200 printk(MYIOC_s_WARN_FMT
201 "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
206 sh = scsi_host_alloc(&mptspi_driver_template, sizeof(MPT_SCSI_HOST));
209 printk(MYIOC_s_WARN_FMT
210 "Unable to register controller with SCSI subsystem\n",
215 spin_lock_irqsave(&ioc->FreeQlock, flags);
217 /* Attach the SCSI Host to the IOC structure
225 /* set 16 byte cdb's */
226 sh->max_cmd_len = 16;
228 /* Yikes! This is important!
229 * Otherwise, by default, linux
230 * only scans target IDs 0-7!
231 * pfactsN->MaxDevices unreliable
232 * (not supported in early
233 * versions of the FW).
234 * max_id = 1 + actual max id,
235 * max_lun = 1 + actual last lun,
238 sh->max_id = MPT_MAX_SCSI_DEVICES;
240 sh->max_lun = MPT_LAST_LUN + 1;
242 sh->this_id = ioc->pfacts[0].PortSCSIID;
246 sh->unique_id = ioc->id;
248 /* Verify that we won't exceed the maximum
249 * number of chain buffers
250 * We can optimize: ZZ = req_sz/sizeof(SGE)
252 * numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
253 * + (req_sz - 64)/sizeof(SGE)
254 * A slightly different algorithm is required for
257 scale = ioc->req_sz/(sizeof(dma_addr_t) + sizeof(u32));
258 if (sizeof(dma_addr_t) == sizeof(u64)) {
259 numSGE = (scale - 1) *
260 (ioc->facts.MaxChainDepth-1) + scale +
261 (ioc->req_sz - 60) / (sizeof(dma_addr_t) +
264 numSGE = 1 + (scale - 1) *
265 (ioc->facts.MaxChainDepth-1) + scale +
266 (ioc->req_sz - 64) / (sizeof(dma_addr_t) +
270 if (numSGE < sh->sg_tablesize) {
271 /* Reset this value */
272 dprintk((MYIOC_s_INFO_FMT
273 "Resetting sg_tablesize to %d from %d\n",
274 ioc->name, numSGE, sh->sg_tablesize));
275 sh->sg_tablesize = numSGE;
278 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
280 hd = (MPT_SCSI_HOST *) sh->hostdata;
283 /* SCSI needs scsi_cmnd lookup table!
284 * (with size equal to req_depth*PtrSz!)
286 sz = ioc->req_depth * sizeof(void *);
287 mem = kmalloc(sz, GFP_ATOMIC);
290 goto mptspi_probe_failed;
294 hd->ScsiLookup = (struct scsi_cmnd **) mem;
296 dprintk((MYIOC_s_INFO_FMT "ScsiLookup @ %p, sz=%d\n",
297 ioc->name, hd->ScsiLookup, sz));
299 /* Allocate memory for the device structures.
300 * A non-Null pointer at an offset
301 * indicates a device exists.
302 * max_id = 1 + maximum id (hosts.h)
304 sz = sh->max_id * sizeof(void *);
305 mem = kmalloc(sz, GFP_ATOMIC);
308 goto mptspi_probe_failed;
312 hd->Targets = (VirtDevice **) mem;
315 " Targets @ %p, sz=%d\n", hd->Targets, sz));
317 /* Clear the TM flags
320 hd->tmState = TM_STATE_NONE;
321 hd->resetPending = 0;
322 hd->abortSCpnt = NULL;
324 /* Clear the pointer used to store
325 * single-threaded commands, i.e., those
326 * issued during a bus scan, dv and
327 * configuration pages.
331 /* Initialize this SCSI Hosts' timers
332 * To use, set the timer expires field
335 init_timer(&hd->timer);
336 hd->timer.data = (unsigned long) hd;
337 hd->timer.function = mptscsih_timer_expired;
339 ioc->spi_data.Saf_Te = mpt_saf_te;
340 hd->mpt_pq_filter = mpt_pq_filter;
342 #ifdef MPTSCSIH_ENABLE_DOMAIN_VALIDATION
343 if (ioc->spi_data.maxBusWidth > mpt_width)
344 ioc->spi_data.maxBusWidth = mpt_width;
345 if (ioc->spi_data.minSyncFactor < mpt_factor)
346 ioc->spi_data.minSyncFactor = mpt_factor;
347 if (ioc->spi_data.minSyncFactor == MPT_ASYNC) {
348 ioc->spi_data.maxSyncOffset = 0;
350 ioc->spi_data.mpt_dv = mpt_dv;
353 ddvprintk((MYIOC_s_INFO_FMT
354 "dv %x width %x factor %x saf_te %x mpt_pq_filter %x\n",
362 hd->negoNvram = MPT_SCSICFG_USE_NVRAM;
363 ddvprintk((MYIOC_s_INFO_FMT
364 "saf_te %x mpt_pq_filter %x\n",
370 ioc->spi_data.forceDv = 0;
371 ioc->spi_data.noQas = 0;
373 for (ii=0; ii < MPT_MAX_SCSI_DEVICES; ii++)
374 ioc->spi_data.dvStatus[ii] =
375 MPT_SCSICFG_NEGOTIATE;
377 for (ii=0; ii < MPT_MAX_SCSI_DEVICES; ii++)
378 ioc->spi_data.dvStatus[ii] |=
379 MPT_SCSICFG_DV_NOT_DONE;
381 init_waitqueue_head(&hd->scandv_waitq);
382 hd->scandv_wait_done = 0;
383 hd->last_queue_full = 0;
385 error = scsi_add_host (sh, &ioc->pcidev->dev);
387 dprintk((KERN_ERR MYNAM
388 "scsi_add_host failed\n"));
389 goto mptspi_probe_failed;
397 mptscsih_remove(pdev);
401 static struct pci_driver mptspi_driver = {
403 .id_table = mptspi_pci_table,
404 .probe = mptspi_probe,
405 .remove = __devexit_p(mptscsih_remove),
406 .shutdown = mptscsih_shutdown,
408 .suspend = mptscsih_suspend,
409 .resume = mptscsih_resume,
413 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
415 * mptspi_init - Register MPT adapter(s) as SCSI host(s) with
416 * linux scsi mid-layer.
418 * Returns 0 for success, non-zero for failure.
424 show_mptmod_ver(my_NAME, my_VERSION);
426 mptspiDoneCtx = mpt_register(mptscsih_io_done, MPTSPI_DRIVER);
427 mptspiTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTSPI_DRIVER);
428 mptspiInternalCtx = mpt_register(mptscsih_scandv_complete, MPTSPI_DRIVER);
430 if (mpt_event_register(mptspiDoneCtx, mptscsih_event_process) == 0) {
431 devtprintk((KERN_INFO MYNAM
432 ": Registered for IOC event notifications\n"));
435 if (mpt_reset_register(mptspiDoneCtx, mptscsih_ioc_reset) == 0) {
436 dprintk((KERN_INFO MYNAM
437 ": Registered for IOC reset notifications\n"));
440 return pci_register_driver(&mptspi_driver);
443 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
444 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
446 * mptspi_exit - Unregisters MPT adapter(s)
452 pci_unregister_driver(&mptspi_driver);
454 mpt_reset_deregister(mptspiDoneCtx);
455 dprintk((KERN_INFO MYNAM
456 ": Deregistered for IOC reset notifications\n"));
458 mpt_event_deregister(mptspiDoneCtx);
459 dprintk((KERN_INFO MYNAM
460 ": Deregistered for IOC event notifications\n"));
462 mpt_deregister(mptspiInternalCtx);
463 mpt_deregister(mptspiTaskCtx);
464 mpt_deregister(mptspiDoneCtx);
467 module_init(mptspi_init);
468 module_exit(mptspi_exit);