2 * linux/drivers/message/fusion/mptfc.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 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
46 #include "linux_compat.h" /* linux-2.6 tweaks */
47 #include <linux/module.h>
48 #include <linux/kernel.h>
49 #include <linux/init.h>
50 #include <linux/errno.h>
51 #include <linux/kdev_t.h>
52 #include <linux/blkdev.h>
53 #include <linux/delay.h> /* for mdelay */
54 #include <linux/interrupt.h> /* needed for in_interrupt() proto */
55 #include <linux/reboot.h> /* notifier code */
56 #include <linux/sched.h>
57 #include <linux/workqueue.h>
59 #include <scsi/scsi.h>
60 #include <scsi/scsi_cmnd.h>
61 #include <scsi/scsi_device.h>
62 #include <scsi/scsi_host.h>
63 #include <scsi/scsi_tcq.h>
68 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
69 #define my_NAME "Fusion MPT FC Host driver"
70 #define my_VERSION MPT_LINUX_VERSION_COMMON
73 MODULE_AUTHOR(MODULEAUTHOR);
74 MODULE_DESCRIPTION(my_NAME);
75 MODULE_LICENSE("GPL");
77 /* Command line args */
78 static int mpt_pq_filter = 0;
79 module_param(mpt_pq_filter, int, 0);
80 MODULE_PARM_DESC(mpt_pq_filter, " Enable peripheral qualifier filter: enable=1 (default=0)");
82 static int mptfcDoneCtx = -1;
83 static int mptfcTaskCtx = -1;
84 static int mptfcInternalCtx = -1; /* Used only for internal commands */
86 static struct scsi_host_template mptfc_driver_template = {
88 .proc_info = mptscsih_proc_info,
89 .name = "MPT FC Host",
90 .info = mptscsih_info,
91 .queuecommand = mptscsih_qcmd,
92 .slave_alloc = mptscsih_slave_alloc,
93 .slave_configure = mptscsih_slave_configure,
94 .slave_destroy = mptscsih_slave_destroy,
95 .change_queue_depth = mptscsih_change_queue_depth,
96 .eh_abort_handler = mptscsih_abort,
97 .eh_device_reset_handler = mptscsih_dev_reset,
98 .eh_bus_reset_handler = mptscsih_bus_reset,
99 .eh_host_reset_handler = mptscsih_host_reset,
100 .bios_param = mptscsih_bios_param,
101 .can_queue = MPT_FC_CAN_QUEUE,
103 .sg_tablesize = MPT_SCSI_SG_DEPTH,
106 .use_clustering = ENABLE_CLUSTERING,
109 /****************************************************************************
113 static struct pci_device_id mptfc_pci_table[] = {
114 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC909,
115 PCI_ANY_ID, PCI_ANY_ID },
116 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC919,
117 PCI_ANY_ID, PCI_ANY_ID },
118 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC929,
119 PCI_ANY_ID, PCI_ANY_ID },
120 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC919X,
121 PCI_ANY_ID, PCI_ANY_ID },
122 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC929X,
123 PCI_ANY_ID, PCI_ANY_ID },
124 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC939X,
125 PCI_ANY_ID, PCI_ANY_ID },
126 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC949X,
127 PCI_ANY_ID, PCI_ANY_ID },
128 {0} /* Terminating entry */
130 MODULE_DEVICE_TABLE(pci, mptfc_pci_table);
132 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
133 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
135 * mptfc_probe - Installs scsi devices per bus.
136 * @pdev: Pointer to pci_dev structure
138 * Returns 0 for success, non-zero for failure.
142 mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id)
144 struct Scsi_Host *sh;
156 if ((r = mpt_attach(pdev,id)) != 0)
159 ioc = pci_get_drvdata(pdev);
160 ioc->DoneCtx = mptfcDoneCtx;
161 ioc->TaskCtx = mptfcTaskCtx;
162 ioc->InternalCtx = mptfcInternalCtx;
164 /* Added sanity check on readiness of the MPT adapter.
166 if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
167 printk(MYIOC_s_WARN_FMT
168 "Skipping because it's not operational!\n",
174 printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
179 /* Sanity check - ensure at least 1 port is INITIATOR capable
182 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
183 if (ioc->pfacts[ii].ProtocolFlags &
184 MPI_PORTFACTS_PROTOCOL_INITIATOR)
189 printk(MYIOC_s_WARN_FMT
190 "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
195 sh = scsi_host_alloc(&mptfc_driver_template, sizeof(MPT_SCSI_HOST));
198 printk(MYIOC_s_WARN_FMT
199 "Unable to register controller with SCSI subsystem\n",
204 spin_lock_irqsave(&ioc->FreeQlock, flags);
206 /* Attach the SCSI Host to the IOC structure
214 /* set 16 byte cdb's */
215 sh->max_cmd_len = 16;
217 sh->max_id = MPT_MAX_FC_DEVICES<256 ? MPT_MAX_FC_DEVICES : 255;
219 sh->max_lun = MPT_LAST_LUN + 1;
221 sh->this_id = ioc->pfacts[0].PortSCSIID;
225 sh->unique_id = ioc->id;
227 /* Verify that we won't exceed the maximum
228 * number of chain buffers
229 * We can optimize: ZZ = req_sz/sizeof(SGE)
231 * numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
232 * + (req_sz - 64)/sizeof(SGE)
233 * A slightly different algorithm is required for
236 scale = ioc->req_sz/(sizeof(dma_addr_t) + sizeof(u32));
237 if (sizeof(dma_addr_t) == sizeof(u64)) {
238 numSGE = (scale - 1) *
239 (ioc->facts.MaxChainDepth-1) + scale +
240 (ioc->req_sz - 60) / (sizeof(dma_addr_t) +
243 numSGE = 1 + (scale - 1) *
244 (ioc->facts.MaxChainDepth-1) + scale +
245 (ioc->req_sz - 64) / (sizeof(dma_addr_t) +
249 if (numSGE < sh->sg_tablesize) {
250 /* Reset this value */
251 dprintk((MYIOC_s_INFO_FMT
252 "Resetting sg_tablesize to %d from %d\n",
253 ioc->name, numSGE, sh->sg_tablesize));
254 sh->sg_tablesize = numSGE;
257 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
259 hd = (MPT_SCSI_HOST *) sh->hostdata;
262 /* SCSI needs scsi_cmnd lookup table!
263 * (with size equal to req_depth*PtrSz!)
265 sz = ioc->req_depth * sizeof(void *);
266 mem = kmalloc(sz, GFP_ATOMIC);
269 goto mptfc_probe_failed;
273 hd->ScsiLookup = (struct scsi_cmnd **) mem;
275 dprintk((MYIOC_s_INFO_FMT "ScsiLookup @ %p, sz=%d\n",
276 ioc->name, hd->ScsiLookup, sz));
278 /* Allocate memory for the device structures.
279 * A non-Null pointer at an offset
280 * indicates a device exists.
281 * max_id = 1 + maximum id (hosts.h)
283 sz = sh->max_id * sizeof(void *);
284 mem = kmalloc(sz, GFP_ATOMIC);
287 goto mptfc_probe_failed;
291 hd->Targets = (VirtDevice **) mem;
294 " Targets @ %p, sz=%d\n", hd->Targets, sz));
296 /* Clear the TM flags
299 hd->tmState = TM_STATE_NONE;
300 hd->resetPending = 0;
301 hd->abortSCpnt = NULL;
303 /* Clear the pointer used to store
304 * single-threaded commands, i.e., those
305 * issued during a bus scan, dv and
306 * configuration pages.
310 /* Initialize this SCSI Hosts' timers
311 * To use, set the timer expires field
314 init_timer(&hd->timer);
315 hd->timer.data = (unsigned long) hd;
316 hd->timer.function = mptscsih_timer_expired;
318 hd->mpt_pq_filter = mpt_pq_filter;
320 ddvprintk((MYIOC_s_INFO_FMT
321 "mpt_pq_filter %x\n",
325 init_waitqueue_head(&hd->scandv_waitq);
326 hd->scandv_wait_done = 0;
327 hd->last_queue_full = 0;
329 error = scsi_add_host (sh, &ioc->pcidev->dev);
331 dprintk((KERN_ERR MYNAM
332 "scsi_add_host failed\n"));
333 goto mptfc_probe_failed;
341 mptscsih_remove(pdev);
345 static struct pci_driver mptfc_driver = {
347 .id_table = mptfc_pci_table,
348 .probe = mptfc_probe,
349 .remove = __devexit_p(mptscsih_remove),
350 .shutdown = mptscsih_shutdown,
352 .suspend = mptscsih_suspend,
353 .resume = mptscsih_resume,
357 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
359 * mptfc_init - Register MPT adapter(s) as SCSI host(s) with
360 * linux scsi mid-layer.
362 * Returns 0 for success, non-zero for failure.
368 show_mptmod_ver(my_NAME, my_VERSION);
370 mptfcDoneCtx = mpt_register(mptscsih_io_done, MPTFC_DRIVER);
371 mptfcTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTFC_DRIVER);
372 mptfcInternalCtx = mpt_register(mptscsih_scandv_complete, MPTFC_DRIVER);
374 if (mpt_event_register(mptfcDoneCtx, mptscsih_event_process) == 0) {
375 devtprintk((KERN_INFO MYNAM
376 ": Registered for IOC event notifications\n"));
379 if (mpt_reset_register(mptfcDoneCtx, mptscsih_ioc_reset) == 0) {
380 dprintk((KERN_INFO MYNAM
381 ": Registered for IOC reset notifications\n"));
384 return pci_register_driver(&mptfc_driver);
387 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
388 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
390 * mptfc_exit - Unregisters MPT adapter(s)
396 pci_unregister_driver(&mptfc_driver);
398 mpt_reset_deregister(mptfcDoneCtx);
399 dprintk((KERN_INFO MYNAM
400 ": Deregistered for IOC reset notifications\n"));
402 mpt_event_deregister(mptfcDoneCtx);
403 dprintk((KERN_INFO MYNAM
404 ": Deregistered for IOC event notifications\n"));
406 mpt_deregister(mptfcInternalCtx);
407 mpt_deregister(mptfcTaskCtx);
408 mpt_deregister(mptfcDoneCtx);
411 module_init(mptfc_init);
412 module_exit(mptfc_exit);