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 device_attribute mptfc_queue_depth_attr = {
88 .name = "queue_depth",
91 .store = mptscsih_store_queue_depth,
94 static struct device_attribute *mptfc_dev_attrs[] = {
95 &mptfc_queue_depth_attr,
99 static struct scsi_host_template mptfc_driver_template = {
100 .proc_name = "mptfc",
101 .proc_info = mptscsih_proc_info,
102 .name = "MPT FC Host",
103 .info = mptscsih_info,
104 .queuecommand = mptscsih_qcmd,
105 .slave_alloc = mptscsih_slave_alloc,
106 .slave_configure = mptscsih_slave_configure,
107 .slave_destroy = mptscsih_slave_destroy,
108 .eh_abort_handler = mptscsih_abort,
109 .eh_device_reset_handler = mptscsih_dev_reset,
110 .eh_bus_reset_handler = mptscsih_bus_reset,
111 .eh_host_reset_handler = mptscsih_host_reset,
112 .bios_param = mptscsih_bios_param,
113 .can_queue = MPT_FC_CAN_QUEUE,
115 .sg_tablesize = MPT_SCSI_SG_DEPTH,
118 .use_clustering = ENABLE_CLUSTERING,
119 .sdev_attrs = mptfc_dev_attrs,
122 /****************************************************************************
126 static struct pci_device_id mptfc_pci_table[] = {
127 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC909,
128 PCI_ANY_ID, PCI_ANY_ID },
129 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC919,
130 PCI_ANY_ID, PCI_ANY_ID },
131 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC929,
132 PCI_ANY_ID, PCI_ANY_ID },
133 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC919X,
134 PCI_ANY_ID, PCI_ANY_ID },
135 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC929X,
136 PCI_ANY_ID, PCI_ANY_ID },
137 {0} /* Terminating entry */
139 MODULE_DEVICE_TABLE(pci, mptfc_pci_table);
141 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
142 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
144 * mptfc_probe - Installs scsi devices per bus.
145 * @pdev: Pointer to pci_dev structure
147 * Returns 0 for success, non-zero for failure.
151 mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id)
153 struct Scsi_Host *sh;
165 if ((r = mpt_attach(pdev,id)) != 0)
168 ioc = pci_get_drvdata(pdev);
169 ioc->DoneCtx = mptfcDoneCtx;
170 ioc->TaskCtx = mptfcTaskCtx;
171 ioc->InternalCtx = mptfcInternalCtx;
173 /* Added sanity check on readiness of the MPT adapter.
175 if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
176 printk(MYIOC_s_WARN_FMT
177 "Skipping because it's not operational!\n",
183 printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
188 /* Sanity check - ensure at least 1 port is INITIATOR capable
191 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
192 if (ioc->pfacts[ii].ProtocolFlags &
193 MPI_PORTFACTS_PROTOCOL_INITIATOR)
198 printk(MYIOC_s_WARN_FMT
199 "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
204 sh = scsi_host_alloc(&mptfc_driver_template, sizeof(MPT_SCSI_HOST));
207 printk(MYIOC_s_WARN_FMT
208 "Unable to register controller with SCSI subsystem\n",
213 spin_lock_irqsave(&ioc->FreeQlock, flags);
215 /* Attach the SCSI Host to the IOC structure
223 /* set 16 byte cdb's */
224 sh->max_cmd_len = 16;
226 sh->max_id = MPT_MAX_FC_DEVICES<256 ? MPT_MAX_FC_DEVICES : 255;
228 sh->max_lun = MPT_LAST_LUN + 1;
230 sh->this_id = ioc->pfacts[0].PortSCSIID;
234 sh->unique_id = ioc->id;
236 /* Verify that we won't exceed the maximum
237 * number of chain buffers
238 * We can optimize: ZZ = req_sz/sizeof(SGE)
240 * numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
241 * + (req_sz - 64)/sizeof(SGE)
242 * A slightly different algorithm is required for
245 scale = ioc->req_sz/(sizeof(dma_addr_t) + sizeof(u32));
246 if (sizeof(dma_addr_t) == sizeof(u64)) {
247 numSGE = (scale - 1) *
248 (ioc->facts.MaxChainDepth-1) + scale +
249 (ioc->req_sz - 60) / (sizeof(dma_addr_t) +
252 numSGE = 1 + (scale - 1) *
253 (ioc->facts.MaxChainDepth-1) + scale +
254 (ioc->req_sz - 64) / (sizeof(dma_addr_t) +
258 if (numSGE < sh->sg_tablesize) {
259 /* Reset this value */
260 dprintk((MYIOC_s_INFO_FMT
261 "Resetting sg_tablesize to %d from %d\n",
262 ioc->name, numSGE, sh->sg_tablesize));
263 sh->sg_tablesize = numSGE;
266 /* Set the pci device pointer in Scsi_Host structure.
268 scsi_set_device(sh, &ioc->pcidev->dev);
270 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
272 hd = (MPT_SCSI_HOST *) sh->hostdata;
275 /* SCSI needs scsi_cmnd lookup table!
276 * (with size equal to req_depth*PtrSz!)
278 sz = ioc->req_depth * sizeof(void *);
279 mem = kmalloc(sz, GFP_ATOMIC);
282 goto mptfc_probe_failed;
286 hd->ScsiLookup = (struct scsi_cmnd **) mem;
288 dprintk((MYIOC_s_INFO_FMT "ScsiLookup @ %p, sz=%d\n",
289 ioc->name, hd->ScsiLookup, sz));
291 /* Allocate memory for the device structures.
292 * A non-Null pointer at an offset
293 * indicates a device exists.
294 * max_id = 1 + maximum id (hosts.h)
296 sz = sh->max_id * sizeof(void *);
297 mem = kmalloc(sz, GFP_ATOMIC);
300 goto mptfc_probe_failed;
304 hd->Targets = (VirtDevice **) mem;
307 " Targets @ %p, sz=%d\n", hd->Targets, sz));
309 /* Clear the TM flags
312 hd->tmState = TM_STATE_NONE;
313 hd->resetPending = 0;
314 hd->abortSCpnt = NULL;
316 /* Clear the pointer used to store
317 * single-threaded commands, i.e., those
318 * issued during a bus scan, dv and
319 * configuration pages.
323 /* Initialize this SCSI Hosts' timers
324 * To use, set the timer expires field
327 init_timer(&hd->timer);
328 hd->timer.data = (unsigned long) hd;
329 hd->timer.function = mptscsih_timer_expired;
331 hd->mpt_pq_filter = mpt_pq_filter;
333 ddvprintk((MYIOC_s_INFO_FMT
334 "mpt_pq_filter %x\n",
338 init_waitqueue_head(&hd->scandv_waitq);
339 hd->scandv_wait_done = 0;
340 hd->last_queue_full = 0;
342 error = scsi_add_host (sh, &ioc->pcidev->dev);
344 dprintk((KERN_ERR MYNAM
345 "scsi_add_host failed\n"));
346 goto mptfc_probe_failed;
354 mptscsih_remove(pdev);
358 static struct pci_driver mptfc_driver = {
360 .id_table = mptfc_pci_table,
361 .probe = mptfc_probe,
362 .remove = __devexit_p(mptscsih_remove),
364 .shutdown = mptscsih_shutdown,
367 .suspend = mptscsih_suspend,
368 .resume = mptscsih_resume,
372 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
374 * mptfc_init - Register MPT adapter(s) as SCSI host(s) with
375 * linux scsi mid-layer.
377 * Returns 0 for success, non-zero for failure.
383 show_mptmod_ver(my_NAME, my_VERSION);
385 mptfcDoneCtx = mpt_register(mptscsih_io_done, MPTFC_DRIVER);
386 mptfcTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTFC_DRIVER);
387 mptfcInternalCtx = mpt_register(mptscsih_scandv_complete, MPTFC_DRIVER);
389 if (mpt_event_register(mptfcDoneCtx, mptscsih_event_process) == 0) {
390 devtprintk((KERN_INFO MYNAM
391 ": Registered for IOC event notifications\n"));
394 if (mpt_reset_register(mptfcDoneCtx, mptscsih_ioc_reset) == 0) {
395 dprintk((KERN_INFO MYNAM
396 ": Registered for IOC reset notifications\n"));
399 return pci_register_driver(&mptfc_driver);
402 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
403 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
405 * mptfc_exit - Unregisters MPT adapter(s)
411 pci_unregister_driver(&mptfc_driver);
413 mpt_reset_deregister(mptfcDoneCtx);
414 dprintk((KERN_INFO MYNAM
415 ": Deregistered for IOC reset notifications\n"));
417 mpt_event_deregister(mptfcDoneCtx);
418 dprintk((KERN_INFO MYNAM
419 ": Deregistered for IOC event notifications\n"));
421 mpt_deregister(mptfcInternalCtx);
422 mpt_deregister(mptfcTaskCtx);
423 mpt_deregister(mptfcDoneCtx);
426 module_init(mptfc_init);
427 module_exit(mptfc_exit);