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Moore, Eric Dean 243eabc2005-04-22 18:02:25 -04001/*
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.
5 *
6 * Copyright (c) 1999-2005 LSI Logic Corporation
7 * (mailto:mpt_linux_developer@lsil.com)
8 *
9 */
10/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
11/*
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.
15
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.
20
21 NO WARRANTY
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.
31
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
40
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
44*/
45/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
46
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>
59
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>
65
66#include "mptbase.h"
67#include "mptscsih.h"
68
69/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
70#define my_NAME "Fusion MPT SPI Host driver"
71#define my_VERSION MPT_LINUX_VERSION_COMMON
72#define MYNAM "mptspi"
73
74MODULE_AUTHOR(MODULEAUTHOR);
75MODULE_DESCRIPTION(my_NAME);
76MODULE_LICENSE("GPL");
77
78/* Command line args */
79#ifdef MPTSCSIH_ENABLE_DOMAIN_VALIDATION
80static int mpt_dv = MPTSCSIH_DOMAIN_VALIDATION;
81module_param(mpt_dv, int, 0);
82MODULE_PARM_DESC(mpt_dv, " DV Algorithm: enhanced=1, basic=0 (default=MPTSCSIH_DOMAIN_VALIDATION=1)");
83
84static int mpt_width = MPTSCSIH_MAX_WIDTH;
85module_param(mpt_width, int, 0);
86MODULE_PARM_DESC(mpt_width, " Max Bus Width: wide=1, narrow=0 (default=MPTSCSIH_MAX_WIDTH=1)");
87
88static ushort mpt_factor = MPTSCSIH_MIN_SYNC;
89module_param(mpt_factor, ushort, 0);
90MODULE_PARM_DESC(mpt_factor, " Min Sync Factor (default=MPTSCSIH_MIN_SYNC=0x08)");
91#endif
92
93static int mpt_saf_te = MPTSCSIH_SAF_TE;
94module_param(mpt_saf_te, int, 0);
95MODULE_PARM_DESC(mpt_saf_te, " Force enabling SEP Processor: enable=1 (default=MPTSCSIH_SAF_TE=0)");
96
97static int mpt_pq_filter = 0;
98module_param(mpt_pq_filter, int, 0);
99MODULE_PARM_DESC(mpt_pq_filter, " Enable peripheral qualifier filter: enable=1 (default=0)");
100
101static int mptspiDoneCtx = -1;
102static int mptspiTaskCtx = -1;
103static int mptspiInternalCtx = -1; /* Used only for internal commands */
104
Moore, Eric Dean 243eabc2005-04-22 18:02:25 -0400105static struct scsi_host_template mptspi_driver_template = {
106 .proc_name = "mptspi",
107 .proc_info = mptscsih_proc_info,
108 .name = "MPT SPI Host",
109 .info = mptscsih_info,
110 .queuecommand = mptscsih_qcmd,
111 .slave_alloc = mptscsih_slave_alloc,
112 .slave_configure = mptscsih_slave_configure,
113 .slave_destroy = mptscsih_slave_destroy,
Moore, Eric Dean6e3815b2005-06-24 12:18:57 -0600114 .change_queue_depth = mptscsih_change_queue_depth,
Moore, Eric Dean 243eabc2005-04-22 18:02:25 -0400115 .eh_abort_handler = mptscsih_abort,
116 .eh_device_reset_handler = mptscsih_dev_reset,
117 .eh_bus_reset_handler = mptscsih_bus_reset,
118 .eh_host_reset_handler = mptscsih_host_reset,
119 .bios_param = mptscsih_bios_param,
120 .can_queue = MPT_SCSI_CAN_QUEUE,
121 .this_id = -1,
122 .sg_tablesize = MPT_SCSI_SG_DEPTH,
123 .max_sectors = 8192,
124 .cmd_per_lun = 7,
125 .use_clustering = ENABLE_CLUSTERING,
Moore, Eric Dean 243eabc2005-04-22 18:02:25 -0400126};
127
128
129/****************************************************************************
130 * Supported hardware
131 */
132
133static struct pci_device_id mptspi_pci_table[] = {
134 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1030,
135 PCI_ANY_ID, PCI_ANY_ID },
136 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_1030_53C1035,
137 PCI_ANY_ID, PCI_ANY_ID },
138 {0} /* Terminating entry */
139};
140MODULE_DEVICE_TABLE(pci, mptspi_pci_table);
141
142/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
143/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
144/*
145 * mptspi_probe - Installs scsi devices per bus.
146 * @pdev: Pointer to pci_dev structure
147 *
148 * Returns 0 for success, non-zero for failure.
149 *
150 */
151static int
152mptspi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
153{
154 struct Scsi_Host *sh;
155 MPT_SCSI_HOST *hd;
156 MPT_ADAPTER *ioc;
157 unsigned long flags;
158 int sz, ii;
159 int numSGE = 0;
160 int scale;
161 int ioc_cap;
162 u8 *mem;
163 int error=0;
164 int r;
Christoph Hellwigc6678e02005-08-18 16:24:53 +0200165
Moore, Eric Dean 243eabc2005-04-22 18:02:25 -0400166 if ((r = mpt_attach(pdev,id)) != 0)
167 return r;
Christoph Hellwigc6678e02005-08-18 16:24:53 +0200168
Moore, Eric Dean 243eabc2005-04-22 18:02:25 -0400169 ioc = pci_get_drvdata(pdev);
Moore, Eric Dean d335cc32005-04-30 17:09:38 -0500170 ioc->DoneCtx = mptspiDoneCtx;
171 ioc->TaskCtx = mptspiTaskCtx;
172 ioc->InternalCtx = mptspiInternalCtx;
Christoph Hellwigc6678e02005-08-18 16:24:53 +0200173
Moore, Eric Dean 243eabc2005-04-22 18:02:25 -0400174 /* Added sanity check on readiness of the MPT adapter.
175 */
176 if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
177 printk(MYIOC_s_WARN_FMT
178 "Skipping because it's not operational!\n",
179 ioc->name);
180 return -ENODEV;
181 }
182
183 if (!ioc->active) {
184 printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
185 ioc->name);
186 return -ENODEV;
187 }
188
189 /* Sanity check - ensure at least 1 port is INITIATOR capable
190 */
191 ioc_cap = 0;
192 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
193 if (ioc->pfacts[ii].ProtocolFlags &
194 MPI_PORTFACTS_PROTOCOL_INITIATOR)
195 ioc_cap ++;
196 }
197
198 if (!ioc_cap) {
199 printk(MYIOC_s_WARN_FMT
200 "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
201 ioc->name, ioc);
Moore, Eric Dean466544d2005-09-14 18:09:10 -0600202 return 0;
Moore, Eric Dean 243eabc2005-04-22 18:02:25 -0400203 }
204
205 sh = scsi_host_alloc(&mptspi_driver_template, sizeof(MPT_SCSI_HOST));
206
207 if (!sh) {
208 printk(MYIOC_s_WARN_FMT
209 "Unable to register controller with SCSI subsystem\n",
210 ioc->name);
211 return -1;
212 }
213
214 spin_lock_irqsave(&ioc->FreeQlock, flags);
215
216 /* Attach the SCSI Host to the IOC structure
217 */
218 ioc->sh = sh;
219
220 sh->io_port = 0;
221 sh->n_io_port = 0;
222 sh->irq = 0;
223
224 /* set 16 byte cdb's */
225 sh->max_cmd_len = 16;
226
227 /* Yikes! This is important!
228 * Otherwise, by default, linux
229 * only scans target IDs 0-7!
230 * pfactsN->MaxDevices unreliable
231 * (not supported in early
232 * versions of the FW).
233 * max_id = 1 + actual max id,
234 * max_lun = 1 + actual last lun,
235 * see hosts.h :o(
236 */
237 sh->max_id = MPT_MAX_SCSI_DEVICES;
238
239 sh->max_lun = MPT_LAST_LUN + 1;
240 sh->max_channel = 0;
241 sh->this_id = ioc->pfacts[0].PortSCSIID;
242
243 /* Required entry.
244 */
245 sh->unique_id = ioc->id;
246
247 /* Verify that we won't exceed the maximum
248 * number of chain buffers
249 * We can optimize: ZZ = req_sz/sizeof(SGE)
250 * For 32bit SGE's:
251 * numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
252 * + (req_sz - 64)/sizeof(SGE)
253 * A slightly different algorithm is required for
254 * 64bit SGEs.
255 */
256 scale = ioc->req_sz/(sizeof(dma_addr_t) + sizeof(u32));
257 if (sizeof(dma_addr_t) == sizeof(u64)) {
258 numSGE = (scale - 1) *
259 (ioc->facts.MaxChainDepth-1) + scale +
260 (ioc->req_sz - 60) / (sizeof(dma_addr_t) +
261 sizeof(u32));
262 } else {
263 numSGE = 1 + (scale - 1) *
264 (ioc->facts.MaxChainDepth-1) + scale +
265 (ioc->req_sz - 64) / (sizeof(dma_addr_t) +
266 sizeof(u32));
267 }
268
269 if (numSGE < sh->sg_tablesize) {
270 /* Reset this value */
271 dprintk((MYIOC_s_INFO_FMT
272 "Resetting sg_tablesize to %d from %d\n",
273 ioc->name, numSGE, sh->sg_tablesize));
274 sh->sg_tablesize = numSGE;
275 }
276
Moore, Eric Dean 243eabc2005-04-22 18:02:25 -0400277 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
278
279 hd = (MPT_SCSI_HOST *) sh->hostdata;
280 hd->ioc = ioc;
281
282 /* SCSI needs scsi_cmnd lookup table!
283 * (with size equal to req_depth*PtrSz!)
284 */
285 sz = ioc->req_depth * sizeof(void *);
286 mem = kmalloc(sz, GFP_ATOMIC);
287 if (mem == NULL) {
288 error = -ENOMEM;
289 goto mptspi_probe_failed;
290 }
291
292 memset(mem, 0, sz);
293 hd->ScsiLookup = (struct scsi_cmnd **) mem;
294
295 dprintk((MYIOC_s_INFO_FMT "ScsiLookup @ %p, sz=%d\n",
296 ioc->name, hd->ScsiLookup, sz));
297
298 /* Allocate memory for the device structures.
299 * A non-Null pointer at an offset
300 * indicates a device exists.
301 * max_id = 1 + maximum id (hosts.h)
302 */
303 sz = sh->max_id * sizeof(void *);
304 mem = kmalloc(sz, GFP_ATOMIC);
305 if (mem == NULL) {
306 error = -ENOMEM;
307 goto mptspi_probe_failed;
308 }
309
310 memset(mem, 0, sz);
311 hd->Targets = (VirtDevice **) mem;
312
313 dprintk((KERN_INFO
314 " Targets @ %p, sz=%d\n", hd->Targets, sz));
315
316 /* Clear the TM flags
317 */
318 hd->tmPending = 0;
319 hd->tmState = TM_STATE_NONE;
320 hd->resetPending = 0;
321 hd->abortSCpnt = NULL;
322
323 /* Clear the pointer used to store
324 * single-threaded commands, i.e., those
325 * issued during a bus scan, dv and
326 * configuration pages.
327 */
328 hd->cmdPtr = NULL;
329
330 /* Initialize this SCSI Hosts' timers
331 * To use, set the timer expires field
332 * and add_timer
333 */
334 init_timer(&hd->timer);
335 hd->timer.data = (unsigned long) hd;
336 hd->timer.function = mptscsih_timer_expired;
337
338 ioc->spi_data.Saf_Te = mpt_saf_te;
339 hd->mpt_pq_filter = mpt_pq_filter;
340
341#ifdef MPTSCSIH_ENABLE_DOMAIN_VALIDATION
342 if (ioc->spi_data.maxBusWidth > mpt_width)
343 ioc->spi_data.maxBusWidth = mpt_width;
344 if (ioc->spi_data.minSyncFactor < mpt_factor)
345 ioc->spi_data.minSyncFactor = mpt_factor;
346 if (ioc->spi_data.minSyncFactor == MPT_ASYNC) {
347 ioc->spi_data.maxSyncOffset = 0;
348 }
349 ioc->spi_data.mpt_dv = mpt_dv;
350 hd->negoNvram = 0;
351
352 ddvprintk((MYIOC_s_INFO_FMT
353 "dv %x width %x factor %x saf_te %x mpt_pq_filter %x\n",
354 ioc->name,
355 mpt_dv,
356 mpt_width,
357 mpt_factor,
358 mpt_saf_te,
359 mpt_pq_filter));
360#else
361 hd->negoNvram = MPT_SCSICFG_USE_NVRAM;
362 ddvprintk((MYIOC_s_INFO_FMT
363 "saf_te %x mpt_pq_filter %x\n",
364 ioc->name,
365 mpt_saf_te,
366 mpt_pq_filter));
367#endif
368
369 ioc->spi_data.forceDv = 0;
370 ioc->spi_data.noQas = 0;
371
372 for (ii=0; ii < MPT_MAX_SCSI_DEVICES; ii++)
373 ioc->spi_data.dvStatus[ii] =
374 MPT_SCSICFG_NEGOTIATE;
375
376 for (ii=0; ii < MPT_MAX_SCSI_DEVICES; ii++)
377 ioc->spi_data.dvStatus[ii] |=
378 MPT_SCSICFG_DV_NOT_DONE;
379
380 init_waitqueue_head(&hd->scandv_waitq);
381 hd->scandv_wait_done = 0;
382 hd->last_queue_full = 0;
383
Moore, Eric Dean 243eabc2005-04-22 18:02:25 -0400384 error = scsi_add_host (sh, &ioc->pcidev->dev);
385 if(error) {
386 dprintk((KERN_ERR MYNAM
387 "scsi_add_host failed\n"));
388 goto mptspi_probe_failed;
389 }
390
391 scsi_scan_host(sh);
392 return 0;
393
394mptspi_probe_failed:
395
396 mptscsih_remove(pdev);
397 return error;
398}
399
400static struct pci_driver mptspi_driver = {
401 .name = "mptspi",
402 .id_table = mptspi_pci_table,
403 .probe = mptspi_probe,
404 .remove = __devexit_p(mptscsih_remove),
Greg Kroah-Hartmand18c3db2005-06-23 17:35:56 -0700405 .shutdown = mptscsih_shutdown,
Moore, Eric Dean 243eabc2005-04-22 18:02:25 -0400406#ifdef CONFIG_PM
407 .suspend = mptscsih_suspend,
408 .resume = mptscsih_resume,
409#endif
410};
411
412/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
413/**
414 * mptspi_init - Register MPT adapter(s) as SCSI host(s) with
415 * linux scsi mid-layer.
416 *
417 * Returns 0 for success, non-zero for failure.
418 */
419static int __init
420mptspi_init(void)
421{
422
423 show_mptmod_ver(my_NAME, my_VERSION);
424
425 mptspiDoneCtx = mpt_register(mptscsih_io_done, MPTSPI_DRIVER);
426 mptspiTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTSPI_DRIVER);
427 mptspiInternalCtx = mpt_register(mptscsih_scandv_complete, MPTSPI_DRIVER);
428
429 if (mpt_event_register(mptspiDoneCtx, mptscsih_event_process) == 0) {
430 devtprintk((KERN_INFO MYNAM
431 ": Registered for IOC event notifications\n"));
432 }
433
434 if (mpt_reset_register(mptspiDoneCtx, mptscsih_ioc_reset) == 0) {
435 dprintk((KERN_INFO MYNAM
436 ": Registered for IOC reset notifications\n"));
437 }
438
439 return pci_register_driver(&mptspi_driver);
440}
441
442/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
443/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
444/**
445 * mptspi_exit - Unregisters MPT adapter(s)
446 *
447 */
448static void __exit
449mptspi_exit(void)
450{
451 pci_unregister_driver(&mptspi_driver);
452
453 mpt_reset_deregister(mptspiDoneCtx);
454 dprintk((KERN_INFO MYNAM
455 ": Deregistered for IOC reset notifications\n"));
456
457 mpt_event_deregister(mptspiDoneCtx);
458 dprintk((KERN_INFO MYNAM
459 ": Deregistered for IOC event notifications\n"));
460
461 mpt_deregister(mptspiInternalCtx);
462 mpt_deregister(mptspiTaskCtx);
463 mpt_deregister(mptspiDoneCtx);
464}
465
466module_init(mptspi_init);
467module_exit(mptspi_exit);