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 = {
87 .module = THIS_MODULE,
89 .proc_info = mptscsih_proc_info,
90 .name = "MPT FC Host",
91 .info = mptscsih_info,
92 .queuecommand = mptscsih_qcmd,
93 .slave_alloc = mptscsih_slave_alloc,
94 .slave_configure = mptscsih_slave_configure,
95 .slave_destroy = mptscsih_slave_destroy,
96 .change_queue_depth = mptscsih_change_queue_depth,
97 .eh_abort_handler = mptscsih_abort,
98 .eh_device_reset_handler = mptscsih_dev_reset,
99 .eh_bus_reset_handler = mptscsih_bus_reset,
100 .eh_host_reset_handler = mptscsih_host_reset,
101 .bios_param = mptscsih_bios_param,
102 .can_queue = MPT_FC_CAN_QUEUE,
104 .sg_tablesize = MPT_SCSI_SG_DEPTH,
107 .use_clustering = ENABLE_CLUSTERING,
110 /****************************************************************************
114 static struct pci_device_id mptfc_pci_table[] = {
115 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC909,
116 PCI_ANY_ID, PCI_ANY_ID },
117 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC919,
118 PCI_ANY_ID, PCI_ANY_ID },
119 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC929,
120 PCI_ANY_ID, PCI_ANY_ID },
121 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC919X,
122 PCI_ANY_ID, PCI_ANY_ID },
123 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC929X,
124 PCI_ANY_ID, PCI_ANY_ID },
125 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC939X,
126 PCI_ANY_ID, PCI_ANY_ID },
127 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC949X,
128 PCI_ANY_ID, PCI_ANY_ID },
129 {0} /* Terminating entry */
131 MODULE_DEVICE_TABLE(pci, mptfc_pci_table);
133 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
134 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
136 * mptfc_probe - Installs scsi devices per bus.
137 * @pdev: Pointer to pci_dev structure
139 * Returns 0 for success, non-zero for failure.
143 mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id)
145 struct Scsi_Host *sh;
157 if ((r = mpt_attach(pdev,id)) != 0)
160 ioc = pci_get_drvdata(pdev);
161 ioc->DoneCtx = mptfcDoneCtx;
162 ioc->TaskCtx = mptfcTaskCtx;
163 ioc->InternalCtx = mptfcInternalCtx;
165 /* Added sanity check on readiness of the MPT adapter.
167 if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
168 printk(MYIOC_s_WARN_FMT
169 "Skipping because it's not operational!\n",
172 goto out_mptfc_probe;
176 printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
179 goto out_mptfc_probe;
182 /* Sanity check - ensure at least 1 port is INITIATOR capable
185 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
186 if (ioc->pfacts[ii].ProtocolFlags &
187 MPI_PORTFACTS_PROTOCOL_INITIATOR)
192 printk(MYIOC_s_WARN_FMT
193 "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
198 sh = scsi_host_alloc(&mptfc_driver_template, sizeof(MPT_SCSI_HOST));
201 printk(MYIOC_s_WARN_FMT
202 "Unable to register controller with SCSI subsystem\n",
205 goto out_mptfc_probe;
208 spin_lock_irqsave(&ioc->FreeQlock, flags);
210 /* Attach the SCSI Host to the IOC structure
218 /* set 16 byte cdb's */
219 sh->max_cmd_len = 16;
221 sh->max_id = MPT_MAX_FC_DEVICES<256 ? MPT_MAX_FC_DEVICES : 255;
223 sh->max_lun = MPT_LAST_LUN + 1;
225 sh->this_id = ioc->pfacts[0].PortSCSIID;
229 sh->unique_id = ioc->id;
231 /* Verify that we won't exceed the maximum
232 * number of chain buffers
233 * We can optimize: ZZ = req_sz/sizeof(SGE)
235 * numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
236 * + (req_sz - 64)/sizeof(SGE)
237 * A slightly different algorithm is required for
240 scale = ioc->req_sz/(sizeof(dma_addr_t) + sizeof(u32));
241 if (sizeof(dma_addr_t) == sizeof(u64)) {
242 numSGE = (scale - 1) *
243 (ioc->facts.MaxChainDepth-1) + scale +
244 (ioc->req_sz - 60) / (sizeof(dma_addr_t) +
247 numSGE = 1 + (scale - 1) *
248 (ioc->facts.MaxChainDepth-1) + scale +
249 (ioc->req_sz - 64) / (sizeof(dma_addr_t) +
253 if (numSGE < sh->sg_tablesize) {
254 /* Reset this value */
255 dprintk((MYIOC_s_INFO_FMT
256 "Resetting sg_tablesize to %d from %d\n",
257 ioc->name, numSGE, sh->sg_tablesize));
258 sh->sg_tablesize = numSGE;
261 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
263 hd = (MPT_SCSI_HOST *) sh->hostdata;
266 /* SCSI needs scsi_cmnd lookup table!
267 * (with size equal to req_depth*PtrSz!)
269 sz = ioc->req_depth * sizeof(void *);
270 mem = kmalloc(sz, GFP_ATOMIC);
273 goto out_mptfc_probe;
277 hd->ScsiLookup = (struct scsi_cmnd **) mem;
279 dprintk((MYIOC_s_INFO_FMT "ScsiLookup @ %p, sz=%d\n",
280 ioc->name, hd->ScsiLookup, sz));
282 /* Allocate memory for the device structures.
283 * A non-Null pointer at an offset
284 * indicates a device exists.
285 * max_id = 1 + maximum id (hosts.h)
287 sz = sh->max_id * sizeof(void *);
288 mem = kmalloc(sz, GFP_ATOMIC);
291 goto out_mptfc_probe;
295 hd->Targets = (VirtDevice **) mem;
298 " Targets @ %p, sz=%d\n", hd->Targets, sz));
300 /* Clear the TM flags
303 hd->tmState = TM_STATE_NONE;
304 hd->resetPending = 0;
305 hd->abortSCpnt = NULL;
307 /* Clear the pointer used to store
308 * single-threaded commands, i.e., those
309 * issued during a bus scan, dv and
310 * configuration pages.
314 /* Initialize this SCSI Hosts' timers
315 * To use, set the timer expires field
318 init_timer(&hd->timer);
319 hd->timer.data = (unsigned long) hd;
320 hd->timer.function = mptscsih_timer_expired;
322 hd->mpt_pq_filter = mpt_pq_filter;
324 ddvprintk((MYIOC_s_INFO_FMT
325 "mpt_pq_filter %x\n",
329 init_waitqueue_head(&hd->scandv_waitq);
330 hd->scandv_wait_done = 0;
331 hd->last_queue_full = 0;
333 error = scsi_add_host (sh, &ioc->pcidev->dev);
335 dprintk((KERN_ERR MYNAM
336 "scsi_add_host failed\n"));
337 goto out_mptfc_probe;
345 mptscsih_remove(pdev);
349 static struct pci_driver mptfc_driver = {
351 .id_table = mptfc_pci_table,
352 .probe = mptfc_probe,
353 .remove = __devexit_p(mptscsih_remove),
354 .shutdown = mptscsih_shutdown,
356 .suspend = mptscsih_suspend,
357 .resume = mptscsih_resume,
361 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
363 * mptfc_init - Register MPT adapter(s) as SCSI host(s) with
364 * linux scsi mid-layer.
366 * Returns 0 for success, non-zero for failure.
372 show_mptmod_ver(my_NAME, my_VERSION);
374 mptfcDoneCtx = mpt_register(mptscsih_io_done, MPTFC_DRIVER);
375 mptfcTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTFC_DRIVER);
376 mptfcInternalCtx = mpt_register(mptscsih_scandv_complete, MPTFC_DRIVER);
378 if (mpt_event_register(mptfcDoneCtx, mptscsih_event_process) == 0) {
379 devtprintk((KERN_INFO MYNAM
380 ": Registered for IOC event notifications\n"));
383 if (mpt_reset_register(mptfcDoneCtx, mptscsih_ioc_reset) == 0) {
384 dprintk((KERN_INFO MYNAM
385 ": Registered for IOC reset notifications\n"));
388 return pci_register_driver(&mptfc_driver);
391 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
392 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
394 * mptfc_exit - Unregisters MPT adapter(s)
400 pci_unregister_driver(&mptfc_driver);
402 mpt_reset_deregister(mptfcDoneCtx);
403 dprintk((KERN_INFO MYNAM
404 ": Deregistered for IOC reset notifications\n"));
406 mpt_event_deregister(mptfcDoneCtx);
407 dprintk((KERN_INFO MYNAM
408 ": Deregistered for IOC event notifications\n"));
410 mpt_deregister(mptfcInternalCtx);
411 mpt_deregister(mptfcTaskCtx);
412 mpt_deregister(mptfcDoneCtx);
415 module_init(mptfc_init);
416 module_exit(mptfc_exit);