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 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC939X,
138 PCI_ANY_ID, PCI_ANY_ID },
139 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC949X,
140 PCI_ANY_ID, PCI_ANY_ID },
141 {0} /* Terminating entry */
143 MODULE_DEVICE_TABLE(pci, mptfc_pci_table);
145 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
146 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
148 * mptfc_probe - Installs scsi devices per bus.
149 * @pdev: Pointer to pci_dev structure
151 * Returns 0 for success, non-zero for failure.
155 mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id)
157 struct Scsi_Host *sh;
169 if ((r = mpt_attach(pdev,id)) != 0)
172 ioc = pci_get_drvdata(pdev);
173 ioc->DoneCtx = mptfcDoneCtx;
174 ioc->TaskCtx = mptfcTaskCtx;
175 ioc->InternalCtx = mptfcInternalCtx;
177 /* Added sanity check on readiness of the MPT adapter.
179 if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
180 printk(MYIOC_s_WARN_FMT
181 "Skipping because it's not operational!\n",
187 printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
192 /* Sanity check - ensure at least 1 port is INITIATOR capable
195 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
196 if (ioc->pfacts[ii].ProtocolFlags &
197 MPI_PORTFACTS_PROTOCOL_INITIATOR)
202 printk(MYIOC_s_WARN_FMT
203 "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
208 sh = scsi_host_alloc(&mptfc_driver_template, sizeof(MPT_SCSI_HOST));
211 printk(MYIOC_s_WARN_FMT
212 "Unable to register controller with SCSI subsystem\n",
217 spin_lock_irqsave(&ioc->FreeQlock, flags);
219 /* Attach the SCSI Host to the IOC structure
227 /* set 16 byte cdb's */
228 sh->max_cmd_len = 16;
230 sh->max_id = MPT_MAX_FC_DEVICES<256 ? MPT_MAX_FC_DEVICES : 255;
232 sh->max_lun = MPT_LAST_LUN + 1;
234 sh->this_id = ioc->pfacts[0].PortSCSIID;
238 sh->unique_id = ioc->id;
240 /* Verify that we won't exceed the maximum
241 * number of chain buffers
242 * We can optimize: ZZ = req_sz/sizeof(SGE)
244 * numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
245 * + (req_sz - 64)/sizeof(SGE)
246 * A slightly different algorithm is required for
249 scale = ioc->req_sz/(sizeof(dma_addr_t) + sizeof(u32));
250 if (sizeof(dma_addr_t) == sizeof(u64)) {
251 numSGE = (scale - 1) *
252 (ioc->facts.MaxChainDepth-1) + scale +
253 (ioc->req_sz - 60) / (sizeof(dma_addr_t) +
256 numSGE = 1 + (scale - 1) *
257 (ioc->facts.MaxChainDepth-1) + scale +
258 (ioc->req_sz - 64) / (sizeof(dma_addr_t) +
262 if (numSGE < sh->sg_tablesize) {
263 /* Reset this value */
264 dprintk((MYIOC_s_INFO_FMT
265 "Resetting sg_tablesize to %d from %d\n",
266 ioc->name, numSGE, sh->sg_tablesize));
267 sh->sg_tablesize = numSGE;
270 /* Set the pci device pointer in Scsi_Host structure.
272 scsi_set_device(sh, &ioc->pcidev->dev);
274 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
276 hd = (MPT_SCSI_HOST *) sh->hostdata;
279 /* SCSI needs scsi_cmnd lookup table!
280 * (with size equal to req_depth*PtrSz!)
282 sz = ioc->req_depth * sizeof(void *);
283 mem = kmalloc(sz, GFP_ATOMIC);
286 goto mptfc_probe_failed;
290 hd->ScsiLookup = (struct scsi_cmnd **) mem;
292 dprintk((MYIOC_s_INFO_FMT "ScsiLookup @ %p, sz=%d\n",
293 ioc->name, hd->ScsiLookup, sz));
295 /* Allocate memory for the device structures.
296 * A non-Null pointer at an offset
297 * indicates a device exists.
298 * max_id = 1 + maximum id (hosts.h)
300 sz = sh->max_id * sizeof(void *);
301 mem = kmalloc(sz, GFP_ATOMIC);
304 goto mptfc_probe_failed;
308 hd->Targets = (VirtDevice **) mem;
311 " Targets @ %p, sz=%d\n", hd->Targets, sz));
313 /* Clear the TM flags
316 hd->tmState = TM_STATE_NONE;
317 hd->resetPending = 0;
318 hd->abortSCpnt = NULL;
320 /* Clear the pointer used to store
321 * single-threaded commands, i.e., those
322 * issued during a bus scan, dv and
323 * configuration pages.
327 /* Initialize this SCSI Hosts' timers
328 * To use, set the timer expires field
331 init_timer(&hd->timer);
332 hd->timer.data = (unsigned long) hd;
333 hd->timer.function = mptscsih_timer_expired;
335 hd->mpt_pq_filter = mpt_pq_filter;
337 ddvprintk((MYIOC_s_INFO_FMT
338 "mpt_pq_filter %x\n",
342 init_waitqueue_head(&hd->scandv_waitq);
343 hd->scandv_wait_done = 0;
344 hd->last_queue_full = 0;
346 error = scsi_add_host (sh, &ioc->pcidev->dev);
348 dprintk((KERN_ERR MYNAM
349 "scsi_add_host failed\n"));
350 goto mptfc_probe_failed;
358 mptscsih_remove(pdev);
362 static struct pci_driver mptfc_driver = {
364 .id_table = mptfc_pci_table,
365 .probe = mptfc_probe,
366 .remove = __devexit_p(mptscsih_remove),
368 .shutdown = mptscsih_shutdown,
371 .suspend = mptscsih_suspend,
372 .resume = mptscsih_resume,
376 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
378 * mptfc_init - Register MPT adapter(s) as SCSI host(s) with
379 * linux scsi mid-layer.
381 * Returns 0 for success, non-zero for failure.
387 show_mptmod_ver(my_NAME, my_VERSION);
389 mptfcDoneCtx = mpt_register(mptscsih_io_done, MPTFC_DRIVER);
390 mptfcTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTFC_DRIVER);
391 mptfcInternalCtx = mpt_register(mptscsih_scandv_complete, MPTFC_DRIVER);
393 if (mpt_event_register(mptfcDoneCtx, mptscsih_event_process) == 0) {
394 devtprintk((KERN_INFO MYNAM
395 ": Registered for IOC event notifications\n"));
398 if (mpt_reset_register(mptfcDoneCtx, mptscsih_ioc_reset) == 0) {
399 dprintk((KERN_INFO MYNAM
400 ": Registered for IOC reset notifications\n"));
403 return pci_register_driver(&mptfc_driver);
406 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
407 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
409 * mptfc_exit - Unregisters MPT adapter(s)
415 pci_unregister_driver(&mptfc_driver);
417 mpt_reset_deregister(mptfcDoneCtx);
418 dprintk((KERN_INFO MYNAM
419 ": Deregistered for IOC reset notifications\n"));
421 mpt_event_deregister(mptfcDoneCtx);
422 dprintk((KERN_INFO MYNAM
423 ": Deregistered for IOC event notifications\n"));
425 mpt_deregister(mptfcInternalCtx);
426 mpt_deregister(mptfcTaskCtx);
427 mpt_deregister(mptfcDoneCtx);
430 module_init(mptfc_init);
431 module_exit(mptfc_exit);