3 * Linux MegaRAID device driver
5 * Copyright (c) 2003-2004 LSI Logic Corporation.
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
12 * FILE : megaraid_mbox.c
13 * Version : v2.20.5.1 (Nov 16 2006)
16 * Atul Mukker <Atul.Mukker@lsi.com>
17 * Sreenivas Bagalkote <Sreenivas.Bagalkote@lsi.com>
18 * Manoj Jose <Manoj.Jose@lsi.com>
21 * List of supported controllers
23 * OEM Product Name VID DID SSVID SSID
24 * --- ------------ --- --- ---- ----
25 * Dell PERC3/QC 101E 1960 1028 0471
26 * Dell PERC3/DC 101E 1960 1028 0493
27 * Dell PERC3/SC 101E 1960 1028 0475
28 * Dell PERC3/Di 1028 1960 1028 0123
29 * Dell PERC4/SC 1000 1960 1028 0520
30 * Dell PERC4/DC 1000 1960 1028 0518
31 * Dell PERC4/QC 1000 0407 1028 0531
32 * Dell PERC4/Di 1028 000F 1028 014A
33 * Dell PERC 4e/Si 1028 0013 1028 016c
34 * Dell PERC 4e/Di 1028 0013 1028 016d
35 * Dell PERC 4e/Di 1028 0013 1028 016e
36 * Dell PERC 4e/Di 1028 0013 1028 016f
37 * Dell PERC 4e/Di 1028 0013 1028 0170
38 * Dell PERC 4e/DC 1000 0408 1028 0002
39 * Dell PERC 4e/SC 1000 0408 1028 0001
42 * LSI MegaRAID SCSI 320-0 1000 1960 1000 A520
43 * LSI MegaRAID SCSI 320-1 1000 1960 1000 0520
44 * LSI MegaRAID SCSI 320-2 1000 1960 1000 0518
45 * LSI MegaRAID SCSI 320-0X 1000 0407 1000 0530
46 * LSI MegaRAID SCSI 320-2X 1000 0407 1000 0532
47 * LSI MegaRAID SCSI 320-4X 1000 0407 1000 0531
48 * LSI MegaRAID SCSI 320-1E 1000 0408 1000 0001
49 * LSI MegaRAID SCSI 320-2E 1000 0408 1000 0002
50 * LSI MegaRAID SATA 150-4 1000 1960 1000 4523
51 * LSI MegaRAID SATA 150-6 1000 1960 1000 0523
52 * LSI MegaRAID SATA 300-4X 1000 0409 1000 3004
53 * LSI MegaRAID SATA 300-8X 1000 0409 1000 3008
55 * INTEL RAID Controller SRCU42X 1000 0407 8086 0532
56 * INTEL RAID Controller SRCS16 1000 1960 8086 0523
57 * INTEL RAID Controller SRCU42E 1000 0408 8086 0002
58 * INTEL RAID Controller SRCZCRX 1000 0407 8086 0530
59 * INTEL RAID Controller SRCS28X 1000 0409 8086 3008
60 * INTEL RAID Controller SROMBU42E 1000 0408 8086 3431
61 * INTEL RAID Controller SROMBU42E 1000 0408 8086 3499
62 * INTEL RAID Controller SRCU51L 1000 1960 8086 0520
64 * FSC MegaRAID PCI Express ROMB 1000 0408 1734 1065
66 * ACER MegaRAID ROMB-2E 1000 0408 1025 004D
68 * NEC MegaRAID PCI Express ROMB 1000 0408 1033 8287
70 * For history of changes, see Documentation/ChangeLog.megaraid
73 #include "megaraid_mbox.h"
75 static int megaraid_init(void);
76 static void megaraid_exit(void);
78 static int megaraid_probe_one(struct pci_dev*, const struct pci_device_id *);
79 static void megaraid_detach_one(struct pci_dev *);
80 static void megaraid_mbox_shutdown(struct pci_dev *);
82 static int megaraid_io_attach(adapter_t *);
83 static void megaraid_io_detach(adapter_t *);
85 static int megaraid_init_mbox(adapter_t *);
86 static void megaraid_fini_mbox(adapter_t *);
88 static int megaraid_alloc_cmd_packets(adapter_t *);
89 static void megaraid_free_cmd_packets(adapter_t *);
91 static int megaraid_mbox_setup_dma_pools(adapter_t *);
92 static void megaraid_mbox_teardown_dma_pools(adapter_t *);
94 static int megaraid_sysfs_alloc_resources(adapter_t *);
95 static void megaraid_sysfs_free_resources(adapter_t *);
97 static int megaraid_abort_handler(struct scsi_cmnd *);
98 static int megaraid_reset_handler(struct scsi_cmnd *);
100 static int mbox_post_sync_cmd(adapter_t *, uint8_t []);
101 static int mbox_post_sync_cmd_fast(adapter_t *, uint8_t []);
102 static int megaraid_busywait_mbox(mraid_device_t *);
103 static int megaraid_mbox_product_info(adapter_t *);
104 static int megaraid_mbox_extended_cdb(adapter_t *);
105 static int megaraid_mbox_support_ha(adapter_t *, uint16_t *);
106 static int megaraid_mbox_support_random_del(adapter_t *);
107 static int megaraid_mbox_get_max_sg(adapter_t *);
108 static void megaraid_mbox_enum_raid_scsi(adapter_t *);
109 static void megaraid_mbox_flush_cache(adapter_t *);
110 static int megaraid_mbox_fire_sync_cmd(adapter_t *);
112 static void megaraid_mbox_display_scb(adapter_t *, scb_t *);
113 static void megaraid_mbox_setup_device_map(adapter_t *);
115 static int megaraid_queue_command(struct scsi_cmnd *,
116 void (*)(struct scsi_cmnd *));
117 static scb_t *megaraid_mbox_build_cmd(adapter_t *, struct scsi_cmnd *, int *);
118 static void megaraid_mbox_runpendq(adapter_t *, scb_t *);
119 static void megaraid_mbox_prepare_pthru(adapter_t *, scb_t *,
121 static void megaraid_mbox_prepare_epthru(adapter_t *, scb_t *,
124 static irqreturn_t megaraid_isr(int, void *);
126 static void megaraid_mbox_dpc(unsigned long);
128 static ssize_t megaraid_sysfs_show_app_hndl(struct class_device *, char *);
129 static ssize_t megaraid_sysfs_show_ldnum(struct device *, struct device_attribute *attr, char *);
131 static int megaraid_cmm_register(adapter_t *);
132 static int megaraid_cmm_unregister(adapter_t *);
133 static int megaraid_mbox_mm_handler(unsigned long, uioc_t *, uint32_t);
134 static int megaraid_mbox_mm_command(adapter_t *, uioc_t *);
135 static void megaraid_mbox_mm_done(adapter_t *, scb_t *);
136 static int gather_hbainfo(adapter_t *, mraid_hba_info_t *);
137 static int wait_till_fw_empty(adapter_t *);
141 MODULE_AUTHOR("megaraidlinux@lsi.com");
142 MODULE_DESCRIPTION("LSI Logic MegaRAID Mailbox Driver");
143 MODULE_LICENSE("GPL");
144 MODULE_VERSION(MEGARAID_VERSION);
147 * ### modules parameters for driver ###
151 * Set to enable driver to expose unconfigured disk to kernel
153 static int megaraid_expose_unconf_disks = 0;
154 module_param_named(unconf_disks, megaraid_expose_unconf_disks, int, 0);
155 MODULE_PARM_DESC(unconf_disks,
156 "Set to expose unconfigured disks to kernel (default=0)");
159 * driver wait time if the adapter's mailbox is busy
161 static unsigned int max_mbox_busy_wait = MBOX_BUSY_WAIT;
162 module_param_named(busy_wait, max_mbox_busy_wait, int, 0);
163 MODULE_PARM_DESC(busy_wait,
164 "Max wait for mailbox in microseconds if busy (default=10)");
167 * number of sectors per IO command
169 static unsigned int megaraid_max_sectors = MBOX_MAX_SECTORS;
170 module_param_named(max_sectors, megaraid_max_sectors, int, 0);
171 MODULE_PARM_DESC(max_sectors,
172 "Maximum number of sectors per IO command (default=128)");
175 * number of commands per logical unit
177 static unsigned int megaraid_cmd_per_lun = MBOX_DEF_CMD_PER_LUN;
178 module_param_named(cmd_per_lun, megaraid_cmd_per_lun, int, 0);
179 MODULE_PARM_DESC(cmd_per_lun,
180 "Maximum number of commands per logical unit (default=64)");
184 * Fast driver load option, skip scanning for physical devices during load.
185 * This would result in non-disk devices being skipped during driver load
186 * time. These can be later added though, using /proc/scsi/scsi
188 static unsigned int megaraid_fast_load = 0;
189 module_param_named(fast_load, megaraid_fast_load, int, 0);
190 MODULE_PARM_DESC(fast_load,
191 "Faster loading of the driver, skips physical devices! (default=0)");
195 * mraid_debug level - threshold for amount of information to be displayed by
196 * the driver. This level can be changed through modules parameters, ioctl or
197 * sysfs/proc interface. By default, print the announcement messages only.
199 int mraid_debug_level = CL_ANN;
200 module_param_named(debug_level, mraid_debug_level, int, 0);
201 MODULE_PARM_DESC(debug_level, "Debug level for driver (default=0)");
204 * ### global data ###
206 static uint8_t megaraid_mbox_version[8] =
207 { 0x02, 0x20, 0x04, 0x06, 3, 7, 20, 5 };
211 * PCI table for all supported controllers.
213 static struct pci_device_id pci_id_table_g[] = {
216 PCI_DEVICE_ID_PERC4_DI_DISCOVERY,
218 PCI_SUBSYS_ID_PERC4_DI_DISCOVERY,
221 PCI_VENDOR_ID_LSI_LOGIC,
222 PCI_DEVICE_ID_PERC4_SC,
224 PCI_SUBSYS_ID_PERC4_SC,
227 PCI_VENDOR_ID_LSI_LOGIC,
228 PCI_DEVICE_ID_PERC4_DC,
230 PCI_SUBSYS_ID_PERC4_DC,
233 PCI_VENDOR_ID_LSI_LOGIC,
240 PCI_DEVICE_ID_PERC4_DI_EVERGLADES,
242 PCI_SUBSYS_ID_PERC4_DI_EVERGLADES,
246 PCI_DEVICE_ID_PERC4E_SI_BIGBEND,
248 PCI_SUBSYS_ID_PERC4E_SI_BIGBEND,
252 PCI_DEVICE_ID_PERC4E_DI_KOBUK,
254 PCI_SUBSYS_ID_PERC4E_DI_KOBUK,
258 PCI_DEVICE_ID_PERC4E_DI_CORVETTE,
260 PCI_SUBSYS_ID_PERC4E_DI_CORVETTE,
264 PCI_DEVICE_ID_PERC4E_DI_EXPEDITION,
266 PCI_SUBSYS_ID_PERC4E_DI_EXPEDITION,
270 PCI_DEVICE_ID_PERC4E_DI_GUADALUPE,
272 PCI_SUBSYS_ID_PERC4E_DI_GUADALUPE,
275 PCI_VENDOR_ID_LSI_LOGIC,
276 PCI_DEVICE_ID_DOBSON,
282 PCI_DEVICE_ID_AMI_MEGARAID3,
287 PCI_VENDOR_ID_LSI_LOGIC,
288 PCI_DEVICE_ID_AMI_MEGARAID3,
293 PCI_VENDOR_ID_LSI_LOGIC,
294 PCI_DEVICE_ID_LINDSAY,
298 {0} /* Terminating entry */
300 MODULE_DEVICE_TABLE(pci, pci_id_table_g);
303 static struct pci_driver megaraid_pci_driver_g = {
305 .id_table = pci_id_table_g,
306 .probe = megaraid_probe_one,
307 .remove = __devexit_p(megaraid_detach_one),
308 .shutdown = megaraid_mbox_shutdown,
313 // definitions for the device attributes for exporting logical drive number
314 // for a scsi address (Host, Channel, Id, Lun)
316 CLASS_DEVICE_ATTR(megaraid_mbox_app_hndl, S_IRUSR, megaraid_sysfs_show_app_hndl,
319 // Host template initializer for megaraid mbox sysfs device attributes
320 static struct class_device_attribute *megaraid_shost_attrs[] = {
321 &class_device_attr_megaraid_mbox_app_hndl,
326 DEVICE_ATTR(megaraid_mbox_ld, S_IRUSR, megaraid_sysfs_show_ldnum, NULL);
328 // Host template initializer for megaraid mbox sysfs device attributes
329 static struct device_attribute *megaraid_sdev_attrs[] = {
330 &dev_attr_megaraid_mbox_ld,
335 * megaraid_change_queue_depth - Change the device's queue depth
336 * @sdev: scsi device struct
337 * @qdepth: depth to set
342 static int megaraid_change_queue_depth(struct scsi_device *sdev, int qdepth)
344 if (qdepth > MBOX_MAX_SCSI_CMDS)
345 qdepth = MBOX_MAX_SCSI_CMDS;
346 scsi_adjust_queue_depth(sdev, 0, qdepth);
347 return sdev->queue_depth;
351 * Scsi host template for megaraid unified driver
353 static struct scsi_host_template megaraid_template_g = {
354 .module = THIS_MODULE,
355 .name = "LSI Logic MegaRAID driver",
356 .proc_name = "megaraid",
357 .queuecommand = megaraid_queue_command,
358 .eh_abort_handler = megaraid_abort_handler,
359 .eh_device_reset_handler = megaraid_reset_handler,
360 .eh_bus_reset_handler = megaraid_reset_handler,
361 .eh_host_reset_handler = megaraid_reset_handler,
362 .change_queue_depth = megaraid_change_queue_depth,
363 .use_clustering = ENABLE_CLUSTERING,
364 .sdev_attrs = megaraid_sdev_attrs,
365 .shost_attrs = megaraid_shost_attrs,
370 * megaraid_init - module load hook
372 * We register ourselves as hotplug enabled module and let PCI subsystem
373 * discover our adapters.
380 // Announce the driver version
381 con_log(CL_ANN, (KERN_INFO "megaraid: %s %s\n", MEGARAID_VERSION,
382 MEGARAID_EXT_VERSION));
384 // check validity of module parameters
385 if (megaraid_cmd_per_lun > MBOX_MAX_SCSI_CMDS) {
387 con_log(CL_ANN, (KERN_WARNING
388 "megaraid mailbox: max commands per lun reset to %d\n",
389 MBOX_MAX_SCSI_CMDS));
391 megaraid_cmd_per_lun = MBOX_MAX_SCSI_CMDS;
395 // register as a PCI hot-plug driver module
396 rval = pci_register_driver(&megaraid_pci_driver_g);
398 con_log(CL_ANN, (KERN_WARNING
399 "megaraid: could not register hotplug support.\n"));
407 * megaraid_exit - driver unload entry point
409 * We simply unwrap the megaraid_init routine here.
414 con_log(CL_DLEVEL1, (KERN_NOTICE "megaraid: unloading framework\n"));
416 // unregister as PCI hotplug driver
417 pci_unregister_driver(&megaraid_pci_driver_g);
424 * megaraid_probe_one - PCI hotplug entry point
425 * @pdev : handle to this controller's PCI configuration space
426 * @id : pci device id of the class of controllers
428 * This routine should be called whenever a new adapter is detected by the
429 * PCI hotplug susbsytem.
432 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
437 // detected a new controller
438 con_log(CL_ANN, (KERN_INFO
439 "megaraid: probe new device %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
440 pdev->vendor, pdev->device, pdev->subsystem_vendor,
441 pdev->subsystem_device));
443 con_log(CL_ANN, ("bus %d:slot %d:func %d\n", pdev->bus->number,
444 PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)));
446 if (pci_enable_device(pdev)) {
447 con_log(CL_ANN, (KERN_WARNING
448 "megaraid: pci_enable_device failed\n"));
453 // Enable bus-mastering on this controller
454 pci_set_master(pdev);
456 // Allocate the per driver initialization structure
457 adapter = kmalloc(sizeof(adapter_t), GFP_KERNEL);
459 if (adapter == NULL) {
460 con_log(CL_ANN, (KERN_WARNING
461 "megaraid: out of memory, %s %d.\n", __FUNCTION__, __LINE__));
465 memset(adapter, 0, sizeof(adapter_t));
468 // set up PCI related soft state and other pre-known parameters
469 adapter->unique_id = pdev->bus->number << 8 | pdev->devfn;
470 adapter->irq = pdev->irq;
471 adapter->pdev = pdev;
473 atomic_set(&adapter->being_detached, 0);
475 // Setup the default DMA mask. This would be changed later on
476 // depending on hardware capabilities
477 if (pci_set_dma_mask(adapter->pdev, DMA_32BIT_MASK) != 0) {
479 con_log(CL_ANN, (KERN_WARNING
480 "megaraid: pci_set_dma_mask failed:%d\n", __LINE__));
482 goto out_free_adapter;
486 // Initialize the synchronization lock for kernel and LLD
487 spin_lock_init(&adapter->lock);
489 // Initialize the command queues: the list of free SCBs and the list
491 INIT_LIST_HEAD(&adapter->kscb_pool);
492 spin_lock_init(SCSI_FREE_LIST_LOCK(adapter));
494 INIT_LIST_HEAD(&adapter->pend_list);
495 spin_lock_init(PENDING_LIST_LOCK(adapter));
497 INIT_LIST_HEAD(&adapter->completed_list);
498 spin_lock_init(COMPLETED_LIST_LOCK(adapter));
501 // Start the mailbox based controller
502 if (megaraid_init_mbox(adapter) != 0) {
503 con_log(CL_ANN, (KERN_WARNING
504 "megaraid: maibox adapter did not initialize\n"));
506 goto out_free_adapter;
509 // Register with LSI Common Management Module
510 if (megaraid_cmm_register(adapter) != 0) {
512 con_log(CL_ANN, (KERN_WARNING
513 "megaraid: could not register with management module\n"));
518 // setup adapter handle in PCI soft state
519 pci_set_drvdata(pdev, adapter);
521 // attach with scsi mid-layer
522 if (megaraid_io_attach(adapter) != 0) {
524 con_log(CL_ANN, (KERN_WARNING "megaraid: io attach failed\n"));
532 pci_set_drvdata(pdev, NULL);
533 megaraid_cmm_unregister(adapter);
535 megaraid_fini_mbox(adapter);
539 pci_disable_device(pdev);
546 * megaraid_detach_one - release framework resources and call LLD release routine
547 * @pdev : handle for our PCI cofiguration space
549 * This routine is called during driver unload. We free all the allocated
550 * resources and call the corresponding LLD so that it can also release all
553 * This routine is also called from the PCI hotplug system.
556 megaraid_detach_one(struct pci_dev *pdev)
559 struct Scsi_Host *host;
562 // Start a rollback on this adapter
563 adapter = pci_get_drvdata(pdev);
566 con_log(CL_ANN, (KERN_CRIT
567 "megaraid: Invalid detach on %#4.04x:%#4.04x:%#4.04x:%#4.04x\n",
568 pdev->vendor, pdev->device, pdev->subsystem_vendor,
569 pdev->subsystem_device));
574 con_log(CL_ANN, (KERN_NOTICE
575 "megaraid: detaching device %#4.04x:%#4.04x:%#4.04x:%#4.04x\n",
576 pdev->vendor, pdev->device, pdev->subsystem_vendor,
577 pdev->subsystem_device));
581 host = adapter->host;
583 // do not allow any more requests from the management module for this
585 // FIXME: How do we account for the request which might still be
587 atomic_set(&adapter->being_detached, 1);
589 // detach from the IO sub-system
590 megaraid_io_detach(adapter);
592 // reset the device state in the PCI structure. We check this
593 // condition when we enter here. If the device state is NULL,
594 // that would mean the device has already been removed
595 pci_set_drvdata(pdev, NULL);
597 // Unregister from common management module
599 // FIXME: this must return success or failure for conditions if there
600 // is a command pending with LLD or not.
601 megaraid_cmm_unregister(adapter);
603 // finalize the mailbox based controller and release all resources
604 megaraid_fini_mbox(adapter);
610 pci_disable_device(pdev);
617 * megaraid_mbox_shutdown - PCI shutdown for megaraid HBA
618 * @pdev : generic driver model device
620 * Shutdown notification, perform flush cache.
623 megaraid_mbox_shutdown(struct pci_dev *pdev)
625 adapter_t *adapter = pci_get_drvdata(pdev);
629 con_log(CL_ANN, (KERN_WARNING
630 "megaraid: null device in shutdown\n"));
635 con_log(CL_ANN, (KERN_INFO "megaraid: flushing adapter %d...",
638 megaraid_mbox_flush_cache(adapter);
640 con_log(CL_ANN, ("done\n"));
645 * megaraid_io_attach - attach a device with the IO subsystem
646 * @adapter : controller's soft state
648 * Attach this device with the IO subsystem.
651 megaraid_io_attach(adapter_t *adapter)
653 struct Scsi_Host *host;
655 // Initialize SCSI Host structure
656 host = scsi_host_alloc(&megaraid_template_g, 8);
658 con_log(CL_ANN, (KERN_WARNING
659 "megaraid mbox: scsi_register failed\n"));
664 SCSIHOST2ADAP(host) = (caddr_t)adapter;
665 adapter->host = host;
667 host->irq = adapter->irq;
668 host->unique_id = adapter->unique_id;
669 host->can_queue = adapter->max_cmds;
670 host->this_id = adapter->init_id;
671 host->sg_tablesize = adapter->sglen;
672 host->max_sectors = adapter->max_sectors;
673 host->cmd_per_lun = adapter->cmd_per_lun;
674 host->max_channel = adapter->max_channel;
675 host->max_id = adapter->max_target;
676 host->max_lun = adapter->max_lun;
679 // notify mid-layer about the new controller
680 if (scsi_add_host(host, &adapter->pdev->dev)) {
682 con_log(CL_ANN, (KERN_WARNING
683 "megaraid mbox: scsi_add_host failed\n"));
690 scsi_scan_host(host);
697 * megaraid_io_detach - detach a device from the IO subsystem
698 * @adapter : controller's soft state
700 * Detach this device from the IO subsystem.
703 megaraid_io_detach(adapter_t *adapter)
705 struct Scsi_Host *host;
707 con_log(CL_DLEVEL1, (KERN_INFO "megaraid: io detach\n"));
709 host = adapter->host;
711 scsi_remove_host(host);
718 * START: Mailbox Low Level Driver
720 * This is section specific to the single mailbox based controllers
724 * megaraid_init_mbox - initialize controller
725 * @adapter : our soft state
727 * - Allocate 16-byte aligned mailbox memory for firmware handshake
728 * - Allocate controller's memory resources
729 * - Find out all initialization data
730 * - Allocate memory required for all the commands
731 * - Use internal library of FW routines, build up complete soft state
734 megaraid_init_mbox(adapter_t *adapter)
736 struct pci_dev *pdev;
737 mraid_device_t *raid_dev;
742 adapter->ito = MBOX_TIMEOUT;
743 pdev = adapter->pdev;
746 * Allocate and initialize the init data structure for mailbox
749 raid_dev = kmalloc(sizeof(mraid_device_t), GFP_KERNEL);
750 if (raid_dev == NULL) return -1;
752 memset(raid_dev, 0, sizeof(mraid_device_t));
755 * Attach the adapter soft state to raid device soft state
757 adapter->raid_device = (caddr_t)raid_dev;
758 raid_dev->fast_load = megaraid_fast_load;
762 raid_dev->baseport = pci_resource_start(pdev, 0);
764 if (pci_request_regions(pdev, "MegaRAID: LSI Logic Corporation") != 0) {
766 con_log(CL_ANN, (KERN_WARNING
767 "megaraid: mem region busy\n"));
769 goto out_free_raid_dev;
772 raid_dev->baseaddr = ioremap_nocache(raid_dev->baseport, 128);
774 if (!raid_dev->baseaddr) {
776 con_log(CL_ANN, (KERN_WARNING
777 "megaraid: could not map hba memory\n") );
779 goto out_release_regions;
782 /* initialize the mutual exclusion lock for the mailbox */
783 spin_lock_init(&raid_dev->mailbox_lock);
785 /* allocate memory required for commands */
786 if (megaraid_alloc_cmd_packets(adapter) != 0)
790 * Issue SYNC cmd to flush the pending cmds in the adapter
791 * and initialize its internal state
794 if (megaraid_mbox_fire_sync_cmd(adapter))
795 con_log(CL_ANN, ("megaraid: sync cmd failed\n"));
798 * Setup the rest of the soft state using the library of
802 /* request IRQ and register the interrupt service routine */
803 if (request_irq(adapter->irq, megaraid_isr, IRQF_SHARED, "megaraid",
806 con_log(CL_ANN, (KERN_WARNING
807 "megaraid: Couldn't register IRQ %d!\n", adapter->irq));
813 if (megaraid_mbox_product_info(adapter) != 0)
816 // Do we support extended CDBs
817 adapter->max_cdb_sz = 10;
818 if (megaraid_mbox_extended_cdb(adapter) == 0) {
819 adapter->max_cdb_sz = 16;
823 * Do we support cluster environment, if we do, what is the initiator
825 * NOTE: In a non-cluster aware firmware environment, the LLD should
826 * return 7 as initiator id.
829 adapter->init_id = -1;
830 if (megaraid_mbox_support_ha(adapter, &adapter->init_id) == 0) {
835 * Prepare the device ids array to have the mapping between the kernel
836 * device address and megaraid device address.
837 * We export the physical devices on their actual addresses. The
838 * logical drives are exported on a virtual SCSI channel
840 megaraid_mbox_setup_device_map(adapter);
842 // If the firmware supports random deletion, update the device id map
843 if (megaraid_mbox_support_random_del(adapter)) {
845 // Change the logical drives numbers in device_ids array one
846 // slot in device_ids is reserved for target id, that's why
848 for (i = 0; i <= MAX_LOGICAL_DRIVES_40LD; i++) {
849 adapter->device_ids[adapter->max_channel][i] += 0x80;
851 adapter->device_ids[adapter->max_channel][adapter->init_id] =
854 raid_dev->random_del_supported = 1;
858 * find out the maximum number of scatter-gather elements supported by
861 adapter->sglen = megaraid_mbox_get_max_sg(adapter);
863 // enumerate RAID and SCSI channels so that all devices on SCSI
864 // channels can later be exported, including disk devices
865 megaraid_mbox_enum_raid_scsi(adapter);
868 * Other parameters required by upper layer
870 * maximum number of sectors per IO command
872 adapter->max_sectors = megaraid_max_sectors;
875 * number of queued commands per LUN.
877 adapter->cmd_per_lun = megaraid_cmd_per_lun;
880 * Allocate resources required to issue FW calls, when sysfs is
883 if (megaraid_sysfs_alloc_resources(adapter) != 0)
886 // Set the DMA mask to 64-bit. All supported controllers as capable of
888 pci_read_config_dword(adapter->pdev, PCI_CONF_AMISIG64, &magic64);
890 if (((magic64 == HBA_SIGNATURE_64_BIT) &&
891 ((adapter->pdev->subsystem_device !=
892 PCI_SUBSYS_ID_MEGARAID_SATA_150_6) &&
893 (adapter->pdev->subsystem_device !=
894 PCI_SUBSYS_ID_MEGARAID_SATA_150_4))) ||
895 (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC &&
896 adapter->pdev->device == PCI_DEVICE_ID_VERDE) ||
897 (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC &&
898 adapter->pdev->device == PCI_DEVICE_ID_DOBSON) ||
899 (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC &&
900 adapter->pdev->device == PCI_DEVICE_ID_LINDSAY) ||
901 (adapter->pdev->vendor == PCI_VENDOR_ID_DELL &&
902 adapter->pdev->device == PCI_DEVICE_ID_PERC4_DI_EVERGLADES) ||
903 (adapter->pdev->vendor == PCI_VENDOR_ID_DELL &&
904 adapter->pdev->device == PCI_DEVICE_ID_PERC4E_DI_KOBUK)) {
905 if (pci_set_dma_mask(adapter->pdev, DMA_64BIT_MASK)) {
906 con_log(CL_ANN, (KERN_WARNING
907 "megaraid: DMA mask for 64-bit failed\n"));
909 if (pci_set_dma_mask (adapter->pdev, DMA_32BIT_MASK)) {
910 con_log(CL_ANN, (KERN_WARNING
911 "megaraid: 32-bit DMA mask failed\n"));
912 goto out_free_sysfs_res;
917 // setup tasklet for DPC
918 tasklet_init(&adapter->dpc_h, megaraid_mbox_dpc,
919 (unsigned long)adapter);
921 con_log(CL_DLEVEL1, (KERN_INFO
922 "megaraid mbox hba successfully initialized\n"));
927 megaraid_sysfs_free_resources(adapter);
929 free_irq(adapter->irq, adapter);
931 megaraid_free_cmd_packets(adapter);
933 iounmap(raid_dev->baseaddr);
935 pci_release_regions(pdev);
944 * megaraid_fini_mbox - undo controller initialization
945 * @adapter : our soft state
948 megaraid_fini_mbox(adapter_t *adapter)
950 mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
953 megaraid_mbox_flush_cache(adapter);
955 tasklet_kill(&adapter->dpc_h);
957 megaraid_sysfs_free_resources(adapter);
959 megaraid_free_cmd_packets(adapter);
961 free_irq(adapter->irq, adapter);
963 iounmap(raid_dev->baseaddr);
965 pci_release_regions(adapter->pdev);
974 * megaraid_alloc_cmd_packets - allocate shared mailbox
975 * @adapter : soft state of the raid controller
977 * Allocate and align the shared mailbox. This maibox is used to issue
978 * all the commands. For IO based controllers, the mailbox is also regsitered
979 * with the FW. Allocate memory for all commands as well.
980 * This is our big allocator.
983 megaraid_alloc_cmd_packets(adapter_t *adapter)
985 mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
986 struct pci_dev *pdev;
990 struct mraid_pci_blk *epthru_pci_blk;
991 struct mraid_pci_blk *sg_pci_blk;
992 struct mraid_pci_blk *mbox_pci_blk;
995 pdev = adapter->pdev;
999 * Allocate the common 16-byte aligned memory for the handshake
1002 raid_dev->una_mbox64 = pci_alloc_consistent(adapter->pdev,
1003 sizeof(mbox64_t), &raid_dev->una_mbox64_dma);
1005 if (!raid_dev->una_mbox64) {
1006 con_log(CL_ANN, (KERN_WARNING
1007 "megaraid: out of memory, %s %d\n", __FUNCTION__,
1011 memset(raid_dev->una_mbox64, 0, sizeof(mbox64_t));
1014 * Align the mailbox at 16-byte boundary
1016 raid_dev->mbox = &raid_dev->una_mbox64->mbox32;
1018 raid_dev->mbox = (mbox_t *)((((unsigned long)raid_dev->mbox) + 15) &
1021 raid_dev->mbox64 = (mbox64_t *)(((unsigned long)raid_dev->mbox) - 8);
1023 align = ((void *)raid_dev->mbox -
1024 ((void *)&raid_dev->una_mbox64->mbox32));
1026 raid_dev->mbox_dma = (unsigned long)raid_dev->una_mbox64_dma + 8 +
1029 // Allocate memory for commands issued internally
1030 adapter->ibuf = pci_alloc_consistent(pdev, MBOX_IBUF_SIZE,
1031 &adapter->ibuf_dma_h);
1032 if (!adapter->ibuf) {
1034 con_log(CL_ANN, (KERN_WARNING
1035 "megaraid: out of memory, %s %d\n", __FUNCTION__,
1038 goto out_free_common_mbox;
1040 memset(adapter->ibuf, 0, MBOX_IBUF_SIZE);
1042 // Allocate memory for our SCSI Command Blocks and their associated
1046 * Allocate memory for the base list of scb. Later allocate memory for
1047 * CCBs and embedded components of each CCB and point the pointers in
1048 * scb to the allocated components
1049 * NOTE: The code to allocate SCB will be duplicated in all the LLD
1050 * since the calling routine does not yet know the number of available
1053 adapter->kscb_list = kmalloc(sizeof(scb_t) * MBOX_MAX_SCSI_CMDS,
1056 if (adapter->kscb_list == NULL) {
1057 con_log(CL_ANN, (KERN_WARNING
1058 "megaraid: out of memory, %s %d\n", __FUNCTION__,
1062 memset(adapter->kscb_list, 0, sizeof(scb_t) * MBOX_MAX_SCSI_CMDS);
1064 // memory allocation for our command packets
1065 if (megaraid_mbox_setup_dma_pools(adapter) != 0) {
1066 con_log(CL_ANN, (KERN_WARNING
1067 "megaraid: out of memory, %s %d\n", __FUNCTION__,
1069 goto out_free_scb_list;
1072 // Adjust the scb pointers and link in the free pool
1073 epthru_pci_blk = raid_dev->epthru_pool;
1074 sg_pci_blk = raid_dev->sg_pool;
1075 mbox_pci_blk = raid_dev->mbox_pool;
1077 for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) {
1078 scb = adapter->kscb_list + i;
1079 ccb = raid_dev->ccb_list + i;
1081 ccb->mbox = (mbox_t *)(mbox_pci_blk[i].vaddr + 16);
1082 ccb->raw_mbox = (uint8_t *)ccb->mbox;
1083 ccb->mbox64 = (mbox64_t *)(mbox_pci_blk[i].vaddr + 8);
1084 ccb->mbox_dma_h = (unsigned long)mbox_pci_blk[i].dma_addr + 16;
1086 // make sure the mailbox is aligned properly
1087 if (ccb->mbox_dma_h & 0x0F) {
1088 con_log(CL_ANN, (KERN_CRIT
1089 "megaraid mbox: not aligned on 16-bytes\n"));
1091 goto out_teardown_dma_pools;
1094 ccb->epthru = (mraid_epassthru_t *)
1095 epthru_pci_blk[i].vaddr;
1096 ccb->epthru_dma_h = epthru_pci_blk[i].dma_addr;
1097 ccb->pthru = (mraid_passthru_t *)ccb->epthru;
1098 ccb->pthru_dma_h = ccb->epthru_dma_h;
1101 ccb->sgl64 = (mbox_sgl64 *)sg_pci_blk[i].vaddr;
1102 ccb->sgl_dma_h = sg_pci_blk[i].dma_addr;
1103 ccb->sgl32 = (mbox_sgl32 *)ccb->sgl64;
1105 scb->ccb = (caddr_t)ccb;
1108 scb->sno = i; // command index
1111 scb->state = SCB_FREE;
1112 scb->dma_direction = PCI_DMA_NONE;
1113 scb->dma_type = MRAID_DMA_NONE;
1114 scb->dev_channel = -1;
1115 scb->dev_target = -1;
1117 // put scb in the free pool
1118 list_add_tail(&scb->list, &adapter->kscb_pool);
1123 out_teardown_dma_pools:
1124 megaraid_mbox_teardown_dma_pools(adapter);
1126 kfree(adapter->kscb_list);
1128 pci_free_consistent(pdev, MBOX_IBUF_SIZE, (void *)adapter->ibuf,
1129 adapter->ibuf_dma_h);
1130 out_free_common_mbox:
1131 pci_free_consistent(adapter->pdev, sizeof(mbox64_t),
1132 (caddr_t)raid_dev->una_mbox64, raid_dev->una_mbox64_dma);
1139 * megaraid_free_cmd_packets - free memory
1140 * @adapter : soft state of the raid controller
1142 * Release memory resources allocated for commands.
1145 megaraid_free_cmd_packets(adapter_t *adapter)
1147 mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
1149 megaraid_mbox_teardown_dma_pools(adapter);
1151 kfree(adapter->kscb_list);
1153 pci_free_consistent(adapter->pdev, MBOX_IBUF_SIZE,
1154 (void *)adapter->ibuf, adapter->ibuf_dma_h);
1156 pci_free_consistent(adapter->pdev, sizeof(mbox64_t),
1157 (caddr_t)raid_dev->una_mbox64, raid_dev->una_mbox64_dma);
1163 * megaraid_mbox_setup_dma_pools - setup dma pool for command packets
1164 * @adapter : HBA soft state
1166 * Setup the dma pools for mailbox, passthru and extended passthru structures,
1167 * and scatter-gather lists.
1170 megaraid_mbox_setup_dma_pools(adapter_t *adapter)
1172 mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
1173 struct mraid_pci_blk *epthru_pci_blk;
1174 struct mraid_pci_blk *sg_pci_blk;
1175 struct mraid_pci_blk *mbox_pci_blk;
1180 // Allocate memory for 16-bytes aligned mailboxes
1181 raid_dev->mbox_pool_handle = pci_pool_create("megaraid mbox pool",
1183 sizeof(mbox64_t) + 16,
1186 if (raid_dev->mbox_pool_handle == NULL) {
1187 goto fail_setup_dma_pool;
1190 mbox_pci_blk = raid_dev->mbox_pool;
1191 for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) {
1192 mbox_pci_blk[i].vaddr = pci_pool_alloc(
1193 raid_dev->mbox_pool_handle,
1195 &mbox_pci_blk[i].dma_addr);
1196 if (!mbox_pci_blk[i].vaddr) {
1197 goto fail_setup_dma_pool;
1202 * Allocate memory for each embedded passthru strucuture pointer
1203 * Request for a 128 bytes aligned structure for each passthru command
1205 * Since passthru and extended passthru commands are exclusive, they
1206 * share common memory pool. Passthru structures piggyback on memory
1207 * allocted to extended passthru since passthru is smaller of the two
1209 raid_dev->epthru_pool_handle = pci_pool_create("megaraid mbox pthru",
1210 adapter->pdev, sizeof(mraid_epassthru_t), 128, 0);
1212 if (raid_dev->epthru_pool_handle == NULL) {
1213 goto fail_setup_dma_pool;
1216 epthru_pci_blk = raid_dev->epthru_pool;
1217 for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) {
1218 epthru_pci_blk[i].vaddr = pci_pool_alloc(
1219 raid_dev->epthru_pool_handle,
1221 &epthru_pci_blk[i].dma_addr);
1222 if (!epthru_pci_blk[i].vaddr) {
1223 goto fail_setup_dma_pool;
1228 // Allocate memory for each scatter-gather list. Request for 512 bytes
1229 // alignment for each sg list
1230 raid_dev->sg_pool_handle = pci_pool_create("megaraid mbox sg",
1232 sizeof(mbox_sgl64) * MBOX_MAX_SG_SIZE,
1235 if (raid_dev->sg_pool_handle == NULL) {
1236 goto fail_setup_dma_pool;
1239 sg_pci_blk = raid_dev->sg_pool;
1240 for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) {
1241 sg_pci_blk[i].vaddr = pci_pool_alloc(
1242 raid_dev->sg_pool_handle,
1244 &sg_pci_blk[i].dma_addr);
1245 if (!sg_pci_blk[i].vaddr) {
1246 goto fail_setup_dma_pool;
1252 fail_setup_dma_pool:
1253 megaraid_mbox_teardown_dma_pools(adapter);
1259 * megaraid_mbox_teardown_dma_pools - teardown dma pools for command packets
1260 * @adapter : HBA soft state
1262 * Teardown the dma pool for mailbox, passthru and extended passthru
1263 * structures, and scatter-gather lists.
1266 megaraid_mbox_teardown_dma_pools(adapter_t *adapter)
1268 mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
1269 struct mraid_pci_blk *epthru_pci_blk;
1270 struct mraid_pci_blk *sg_pci_blk;
1271 struct mraid_pci_blk *mbox_pci_blk;
1275 sg_pci_blk = raid_dev->sg_pool;
1276 for (i = 0; i < MBOX_MAX_SCSI_CMDS && sg_pci_blk[i].vaddr; i++) {
1277 pci_pool_free(raid_dev->sg_pool_handle, sg_pci_blk[i].vaddr,
1278 sg_pci_blk[i].dma_addr);
1280 if (raid_dev->sg_pool_handle)
1281 pci_pool_destroy(raid_dev->sg_pool_handle);
1284 epthru_pci_blk = raid_dev->epthru_pool;
1285 for (i = 0; i < MBOX_MAX_SCSI_CMDS && epthru_pci_blk[i].vaddr; i++) {
1286 pci_pool_free(raid_dev->epthru_pool_handle,
1287 epthru_pci_blk[i].vaddr, epthru_pci_blk[i].dma_addr);
1289 if (raid_dev->epthru_pool_handle)
1290 pci_pool_destroy(raid_dev->epthru_pool_handle);
1293 mbox_pci_blk = raid_dev->mbox_pool;
1294 for (i = 0; i < MBOX_MAX_SCSI_CMDS && mbox_pci_blk[i].vaddr; i++) {
1295 pci_pool_free(raid_dev->mbox_pool_handle,
1296 mbox_pci_blk[i].vaddr, mbox_pci_blk[i].dma_addr);
1298 if (raid_dev->mbox_pool_handle)
1299 pci_pool_destroy(raid_dev->mbox_pool_handle);
1306 * megaraid_alloc_scb - detach and return a scb from the free list
1307 * @adapter : controller's soft state
1308 * @scp : pointer to the scsi command to be executed
1310 * Return the scb from the head of the free list. %NULL if there are none
1314 megaraid_alloc_scb(adapter_t *adapter, struct scsi_cmnd *scp)
1316 struct list_head *head = &adapter->kscb_pool;
1318 unsigned long flags;
1320 // detach scb from free pool
1321 spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter), flags);
1323 if (list_empty(head)) {
1324 spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags);
1328 scb = list_entry(head->next, scb_t, list);
1329 list_del_init(&scb->list);
1331 spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags);
1333 scb->state = SCB_ACTIVE;
1335 scb->dma_type = MRAID_DMA_NONE;
1342 * megaraid_dealloc_scb - return the scb to the free pool
1343 * @adapter : controller's soft state
1344 * @scb : scb to be freed
1346 * Return the scb back to the free list of scbs. The caller must 'flush' the
1347 * SCB before calling us. E.g., performing pci_unamp and/or pci_sync etc.
1348 * NOTE NOTE: Make sure the scb is not on any list before calling this
1352 megaraid_dealloc_scb(adapter_t *adapter, scb_t *scb)
1354 unsigned long flags;
1356 // put scb in the free pool
1357 scb->state = SCB_FREE;
1359 spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter), flags);
1361 list_add(&scb->list, &adapter->kscb_pool);
1363 spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags);
1370 * megaraid_mbox_mksgl - make the scatter-gather list
1371 * @adapter : controller's soft state
1372 * @scb : scsi control block
1374 * Prepare the scatter-gather list.
1377 megaraid_mbox_mksgl(adapter_t *adapter, scb_t *scb)
1379 struct scatterlist *sgl;
1381 struct scsi_cmnd *scp;
1387 ccb = (mbox_ccb_t *)scb->ccb;
1389 sgcnt = scsi_dma_map(scp);
1390 BUG_ON(sgcnt < 0 || sgcnt > adapter->sglen);
1392 // no mapping required if no data to be transferred
1396 scb->dma_type = MRAID_DMA_WSG;
1398 scsi_for_each_sg(scp, sgl, sgcnt, i) {
1399 ccb->sgl64[i].address = sg_dma_address(sgl);
1400 ccb->sgl64[i].length = sg_dma_len(sgl);
1403 // Return count of SG nodes
1409 * mbox_post_cmd - issue a mailbox command
1410 * @adapter : controller's soft state
1411 * @scb : command to be issued
1413 * Post the command to the controller if mailbox is available.
1416 mbox_post_cmd(adapter_t *adapter, scb_t *scb)
1418 mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
1422 unsigned long flags;
1426 ccb = (mbox_ccb_t *)scb->ccb;
1427 mbox = raid_dev->mbox;
1428 mbox64 = raid_dev->mbox64;
1431 * Check for busy mailbox. If it is, return failure - the caller
1432 * should retry later.
1434 spin_lock_irqsave(MAILBOX_LOCK(raid_dev), flags);
1436 if (unlikely(mbox->busy)) {
1441 } while(mbox->busy && (i < max_mbox_busy_wait));
1445 spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags);
1452 // Copy this command's mailbox data into "adapter's" mailbox
1453 memcpy((caddr_t)mbox64, (caddr_t)ccb->mbox64, 22);
1454 mbox->cmdid = scb->sno;
1456 adapter->outstanding_cmds++;
1458 if (scb->dma_direction == PCI_DMA_TODEVICE)
1459 pci_dma_sync_sg_for_device(adapter->pdev,
1460 scsi_sglist(scb->scp),
1461 scsi_sg_count(scb->scp),
1464 mbox->busy = 1; // Set busy
1469 WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1);
1471 spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags);
1478 * megaraid_queue_command - generic queue entry point for all LLDs
1479 * @scp : pointer to the scsi command to be executed
1480 * @done : callback routine to be called after the cmd has be completed
1482 * Queue entry point for mailbox based controllers.
1485 megaraid_queue_command(struct scsi_cmnd *scp, void (*done)(struct scsi_cmnd *))
1491 adapter = SCP2ADAPTER(scp);
1492 scp->scsi_done = done;
1496 * Allocate and build a SCB request
1497 * if_busy flag will be set if megaraid_mbox_build_cmd() command could
1498 * not allocate scb. We will return non-zero status in that case.
1499 * NOTE: scb can be null even though certain commands completed
1500 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, it would
1501 * return 0 in that case, and we would do the callback right away.
1504 scb = megaraid_mbox_build_cmd(adapter, scp, &if_busy);
1505 if (!scb) { // command already completed
1510 megaraid_mbox_runpendq(adapter, scb);
1515 * megaraid_mbox_build_cmd - transform the mid-layer scsi commands
1516 * @adapter : controller's soft state
1517 * @scp : mid-layer scsi command pointer
1518 * @busy : set if request could not be completed because of lack of
1521 * Transform the mid-layer scsi command to megaraid firmware lingua.
1522 * Convert the command issued by mid-layer to format understood by megaraid
1523 * firmware. We also complete certain commands without sending them to firmware.
1526 megaraid_mbox_build_cmd(adapter_t *adapter, struct scsi_cmnd *scp, int *busy)
1528 mraid_device_t *rdev = ADAP2RAIDDEV(adapter);
1533 mraid_passthru_t *pthru;
1537 char skip[] = "skipping";
1538 char scan[] = "scanning";
1543 * Get the appropriate device map for the device this command is
1546 MRAID_GET_DEVICE_MAP(adapter, scp, channel, target, islogical);
1549 * Logical drive commands
1552 switch (scp->cmnd[0]) {
1553 case TEST_UNIT_READY:
1555 * Do we support clustering and is the support enabled
1556 * If no, return success always
1559 scp->result = (DID_OK << 16);
1563 if (!(scb = megaraid_alloc_scb(adapter, scp))) {
1564 scp->result = (DID_ERROR << 16);
1569 scb->dma_direction = scp->sc_data_direction;
1570 scb->dev_channel = 0xFF;
1571 scb->dev_target = target;
1572 ccb = (mbox_ccb_t *)scb->ccb;
1575 * The command id will be provided by the command
1578 ccb->raw_mbox[0] = CLUSTER_CMD;
1579 ccb->raw_mbox[2] = RESERVATION_STATUS;
1580 ccb->raw_mbox[3] = target;
1586 struct scatterlist *sgl;
1589 sgl = scsi_sglist(scp);
1592 (page_address((&sgl[0])->page)
1593 + (&sgl[0])->offset);
1595 memset(vaddr, 0, scp->cmnd[4]);
1598 con_log(CL_ANN, (KERN_WARNING
1599 "megaraid mailbox: invalid sg:%d\n",
1603 scp->result = (DID_OK << 16);
1608 * Display the channel scan for logical drives
1609 * Do not display scan for a channel if already done.
1611 if (!(rdev->last_disp & (1L << SCP2CHANNEL(scp)))) {
1613 con_log(CL_ANN, (KERN_INFO
1614 "scsi[%d]: scanning scsi channel %d",
1615 adapter->host->host_no,
1619 " [virtual] for logical drives\n"));
1621 rdev->last_disp |= (1L << SCP2CHANNEL(scp));
1624 if (scp->cmnd[1] & MEGA_SCSI_INQ_EVPD) {
1625 scp->sense_buffer[0] = 0x70;
1626 scp->sense_buffer[2] = ILLEGAL_REQUEST;
1627 scp->sense_buffer[12] = MEGA_INVALID_FIELD_IN_CDB;
1628 scp->result = CHECK_CONDITION << 1;
1636 * Do not allow LUN > 0 for logical drives and
1637 * requests for more than 40 logical drives
1640 scp->result = (DID_BAD_TARGET << 16);
1643 if ((target % 0x80) >= MAX_LOGICAL_DRIVES_40LD) {
1644 scp->result = (DID_BAD_TARGET << 16);
1649 /* Allocate a SCB and initialize passthru */
1650 if (!(scb = megaraid_alloc_scb(adapter, scp))) {
1651 scp->result = (DID_ERROR << 16);
1656 ccb = (mbox_ccb_t *)scb->ccb;
1657 scb->dev_channel = 0xFF;
1658 scb->dev_target = target;
1661 mbox64 = ccb->mbox64;
1665 pthru->reqsenselen = 14;
1666 pthru->islogical = 1;
1667 pthru->logdrv = target;
1668 pthru->cdblen = scp->cmd_len;
1669 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1671 mbox->cmd = MBOXCMD_PASSTHRU64;
1672 scb->dma_direction = scp->sc_data_direction;
1674 pthru->dataxferlen = scsi_bufflen(scp);
1675 pthru->dataxferaddr = ccb->sgl_dma_h;
1676 pthru->numsge = megaraid_mbox_mksgl(adapter,
1679 mbox->xferaddr = 0xFFFFFFFF;
1680 mbox64->xferaddr_lo = (uint32_t )ccb->pthru_dma_h;
1681 mbox64->xferaddr_hi = 0;
1693 * Allocate a SCB and initialize mailbox
1695 if (!(scb = megaraid_alloc_scb(adapter, scp))) {
1696 scp->result = (DID_ERROR << 16);
1700 ccb = (mbox_ccb_t *)scb->ccb;
1701 scb->dev_channel = 0xFF;
1702 scb->dev_target = target;
1704 mbox64 = ccb->mbox64;
1705 mbox->logdrv = target;
1708 * A little HACK: 2nd bit is zero for all scsi read
1709 * commands and is set for all scsi write commands
1711 mbox->cmd = (scp->cmnd[0] & 0x02) ? MBOXCMD_LWRITE64:
1715 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1717 if (scp->cmd_len == 6) {
1718 mbox->numsectors = (uint32_t)scp->cmnd[4];
1720 ((uint32_t)scp->cmnd[1] << 16) |
1721 ((uint32_t)scp->cmnd[2] << 8) |
1722 (uint32_t)scp->cmnd[3];
1724 mbox->lba &= 0x1FFFFF;
1728 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1730 else if (scp->cmd_len == 10) {
1732 (uint32_t)scp->cmnd[8] |
1733 ((uint32_t)scp->cmnd[7] << 8);
1735 ((uint32_t)scp->cmnd[2] << 24) |
1736 ((uint32_t)scp->cmnd[3] << 16) |
1737 ((uint32_t)scp->cmnd[4] << 8) |
1738 (uint32_t)scp->cmnd[5];
1742 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1744 else if (scp->cmd_len == 12) {
1746 ((uint32_t)scp->cmnd[2] << 24) |
1747 ((uint32_t)scp->cmnd[3] << 16) |
1748 ((uint32_t)scp->cmnd[4] << 8) |
1749 (uint32_t)scp->cmnd[5];
1752 ((uint32_t)scp->cmnd[6] << 24) |
1753 ((uint32_t)scp->cmnd[7] << 16) |
1754 ((uint32_t)scp->cmnd[8] << 8) |
1755 (uint32_t)scp->cmnd[9];
1758 con_log(CL_ANN, (KERN_WARNING
1759 "megaraid: unsupported CDB length\n"));
1761 megaraid_dealloc_scb(adapter, scb);
1763 scp->result = (DID_ERROR << 16);
1767 scb->dma_direction = scp->sc_data_direction;
1769 // Calculate Scatter-Gather info
1770 mbox64->xferaddr_lo = (uint32_t )ccb->sgl_dma_h;
1771 mbox->numsge = megaraid_mbox_mksgl(adapter,
1773 mbox->xferaddr = 0xFFFFFFFF;
1774 mbox64->xferaddr_hi = 0;
1781 * Do we support clustering and is the support enabled
1784 scp->result = (DID_BAD_TARGET << 16);
1789 * Allocate a SCB and initialize mailbox
1791 if (!(scb = megaraid_alloc_scb(adapter, scp))) {
1792 scp->result = (DID_ERROR << 16);
1797 ccb = (mbox_ccb_t *)scb->ccb;
1798 scb->dev_channel = 0xFF;
1799 scb->dev_target = target;
1800 ccb->raw_mbox[0] = CLUSTER_CMD;
1801 ccb->raw_mbox[2] = (scp->cmnd[0] == RESERVE) ?
1802 RESERVE_LD : RELEASE_LD;
1804 ccb->raw_mbox[3] = target;
1805 scb->dma_direction = scp->sc_data_direction;
1810 scp->result = (DID_BAD_TARGET << 16);
1814 else { // Passthru device commands
1816 // Do not allow access to target id > 15 or LUN > 7
1817 if (target > 15 || SCP2LUN(scp) > 7) {
1818 scp->result = (DID_BAD_TARGET << 16);
1822 // if fast load option was set and scan for last device is
1823 // over, reset the fast_load flag so that during a possible
1824 // next scan, devices can be made available
1825 if (rdev->fast_load && (target == 15) &&
1826 (SCP2CHANNEL(scp) == adapter->max_channel -1)) {
1828 con_log(CL_ANN, (KERN_INFO
1829 "megaraid[%d]: physical device scan re-enabled\n",
1830 adapter->host->host_no));
1831 rdev->fast_load = 0;
1835 * Display the channel scan for physical devices
1837 if (!(rdev->last_disp & (1L << SCP2CHANNEL(scp)))) {
1839 ss = rdev->fast_load ? skip : scan;
1841 con_log(CL_ANN, (KERN_INFO
1842 "scsi[%d]: %s scsi channel %d [Phy %d]",
1843 adapter->host->host_no, ss, SCP2CHANNEL(scp),
1847 " for non-raid devices\n"));
1849 rdev->last_disp |= (1L << SCP2CHANNEL(scp));
1852 // disable channel sweep if fast load option given
1853 if (rdev->fast_load) {
1854 scp->result = (DID_BAD_TARGET << 16);
1858 // Allocate a SCB and initialize passthru
1859 if (!(scb = megaraid_alloc_scb(adapter, scp))) {
1860 scp->result = (DID_ERROR << 16);
1865 ccb = (mbox_ccb_t *)scb->ccb;
1866 scb->dev_channel = channel;
1867 scb->dev_target = target;
1868 scb->dma_direction = scp->sc_data_direction;
1870 mbox64 = ccb->mbox64;
1872 // Does this firmware support extended CDBs
1873 if (adapter->max_cdb_sz == 16) {
1874 mbox->cmd = MBOXCMD_EXTPTHRU;
1876 megaraid_mbox_prepare_epthru(adapter, scb, scp);
1878 mbox64->xferaddr_lo = (uint32_t)ccb->epthru_dma_h;
1879 mbox64->xferaddr_hi = 0;
1880 mbox->xferaddr = 0xFFFFFFFF;
1883 mbox->cmd = MBOXCMD_PASSTHRU64;
1885 megaraid_mbox_prepare_pthru(adapter, scb, scp);
1887 mbox64->xferaddr_lo = (uint32_t)ccb->pthru_dma_h;
1888 mbox64->xferaddr_hi = 0;
1889 mbox->xferaddr = 0xFFFFFFFF;
1899 * megaraid_mbox_runpendq - execute commands queued in the pending queue
1900 * @adapter : controller's soft state
1901 * @scb_q : SCB to be queued in the pending list
1903 * Scan the pending list for commands which are not yet issued and try to
1904 * post to the controller. The SCB can be a null pointer, which would indicate
1905 * no SCB to be queue, just try to execute the ones in the pending list.
1907 * NOTE: We do not actually traverse the pending list. The SCBs are plucked
1908 * out from the head of the pending list. If it is successfully issued, the
1909 * next SCB is at the head now.
1912 megaraid_mbox_runpendq(adapter_t *adapter, scb_t *scb_q)
1915 unsigned long flags;
1917 spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags);
1920 scb_q->state = SCB_PENDQ;
1921 list_add_tail(&scb_q->list, &adapter->pend_list);
1924 // if the adapter in not in quiescent mode, post the commands to FW
1925 if (adapter->quiescent) {
1926 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags);
1930 while (!list_empty(&adapter->pend_list)) {
1932 assert_spin_locked(PENDING_LIST_LOCK(adapter));
1934 scb = list_entry(adapter->pend_list.next, scb_t, list);
1936 // remove the scb from the pending list and try to
1937 // issue. If we are unable to issue it, put back in
1938 // the pending list and return
1940 list_del_init(&scb->list);
1942 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags);
1944 // if mailbox was busy, return SCB back to pending
1945 // list. Make sure to add at the head, since that's
1946 // where it would have been removed from
1948 scb->state = SCB_ISSUED;
1950 if (mbox_post_cmd(adapter, scb) != 0) {
1952 spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags);
1954 scb->state = SCB_PENDQ;
1956 list_add(&scb->list, &adapter->pend_list);
1958 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter),
1964 spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags);
1967 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags);
1975 * megaraid_mbox_prepare_pthru - prepare a command for physical devices
1976 * @adapter : pointer to controller's soft state
1977 * @scb : scsi control block
1978 * @scp : scsi command from the mid-layer
1980 * Prepare a command for the scsi physical devices.
1983 megaraid_mbox_prepare_pthru(adapter_t *adapter, scb_t *scb,
1984 struct scsi_cmnd *scp)
1987 mraid_passthru_t *pthru;
1991 ccb = (mbox_ccb_t *)scb->ccb;
1993 channel = scb->dev_channel;
1994 target = scb->dev_target;
1996 // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout
1999 pthru->islogical = 0;
2001 pthru->target = (channel << 4) | target;
2002 pthru->logdrv = SCP2LUN(scp);
2003 pthru->reqsenselen = 14;
2004 pthru->cdblen = scp->cmd_len;
2006 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
2008 if (scsi_bufflen(scp)) {
2009 pthru->dataxferlen = scsi_bufflen(scp);
2010 pthru->dataxferaddr = ccb->sgl_dma_h;
2011 pthru->numsge = megaraid_mbox_mksgl(adapter, scb);
2014 pthru->dataxferaddr = 0;
2015 pthru->dataxferlen = 0;
2023 * megaraid_mbox_prepare_epthru - prepare a command for physical devices
2024 * @adapter : pointer to controller's soft state
2025 * @scb : scsi control block
2026 * @scp : scsi command from the mid-layer
2028 * Prepare a command for the scsi physical devices. This rountine prepares
2029 * commands for devices which can take extended CDBs (>10 bytes).
2032 megaraid_mbox_prepare_epthru(adapter_t *adapter, scb_t *scb,
2033 struct scsi_cmnd *scp)
2036 mraid_epassthru_t *epthru;
2040 ccb = (mbox_ccb_t *)scb->ccb;
2041 epthru = ccb->epthru;
2042 channel = scb->dev_channel;
2043 target = scb->dev_target;
2045 // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout
2046 epthru->timeout = 4;
2048 epthru->islogical = 0;
2049 epthru->channel = 0;
2050 epthru->target = (channel << 4) | target;
2051 epthru->logdrv = SCP2LUN(scp);
2052 epthru->reqsenselen = 14;
2053 epthru->cdblen = scp->cmd_len;
2055 memcpy(epthru->cdb, scp->cmnd, scp->cmd_len);
2057 if (scsi_bufflen(scp)) {
2058 epthru->dataxferlen = scsi_bufflen(scp);
2059 epthru->dataxferaddr = ccb->sgl_dma_h;
2060 epthru->numsge = megaraid_mbox_mksgl(adapter, scb);
2063 epthru->dataxferaddr = 0;
2064 epthru->dataxferlen = 0;
2072 * megaraid_ack_sequence - interrupt ack sequence for memory mapped HBAs
2073 * @adapter : controller's soft state
2075 * Interrupt acknowledgement sequence for memory mapped HBAs. Find out the
2076 * completed command and put them on the completed list for later processing.
2078 * Returns: 1 if the interrupt is valid, 0 otherwise
2081 megaraid_ack_sequence(adapter_t *adapter)
2083 mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
2087 uint8_t completed[MBOX_MAX_FIRMWARE_STATUS];
2088 struct list_head clist;
2091 unsigned long flags;
2095 mbox = raid_dev->mbox;
2097 // move the SCBs from the firmware completed array to our local list
2098 INIT_LIST_HEAD(&clist);
2100 // loop till F/W has more commands for us to complete
2102 spin_lock_irqsave(MAILBOX_LOCK(raid_dev), flags);
2105 * Check if a valid interrupt is pending. If found, force the
2106 * interrupt line low.
2108 dword = RDOUTDOOR(raid_dev);
2109 if (dword != 0x10001234) break;
2113 WROUTDOOR(raid_dev, 0x10001234);
2116 // wait for valid numstatus to post
2117 for (i = 0; i < 0xFFFFF; i++) {
2118 if (mbox->numstatus != 0xFF) {
2119 nstatus = mbox->numstatus;
2124 mbox->numstatus = 0xFF;
2126 adapter->outstanding_cmds -= nstatus;
2128 for (i = 0; i < nstatus; i++) {
2130 // wait for valid command index to post
2131 for (j = 0; j < 0xFFFFF; j++) {
2132 if (mbox->completed[i] != 0xFF) break;
2135 completed[i] = mbox->completed[i];
2136 mbox->completed[i] = 0xFF;
2138 if (completed[i] == 0xFF) {
2139 con_log(CL_ANN, (KERN_CRIT
2140 "megaraid: command posting timed out\n"));
2146 // Get SCB associated with this command id
2147 if (completed[i] >= MBOX_MAX_SCSI_CMDS) {
2149 scb = adapter->uscb_list + (completed[i] -
2150 MBOX_MAX_SCSI_CMDS);
2154 scb = adapter->kscb_list + completed[i];
2157 scb->status = mbox->status;
2158 list_add_tail(&scb->list, &clist);
2161 // Acknowledge interrupt
2162 WRINDOOR(raid_dev, 0x02);
2166 spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags);
2169 // put the completed commands in the completed list. DPC would
2170 // complete these commands later
2171 spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags);
2173 list_splice(&clist, &adapter->completed_list);
2175 spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags);
2178 // schedule the DPC if there is some work for it
2180 tasklet_schedule(&adapter->dpc_h);
2187 * megaraid_isr - isr for memory based mailbox based controllers
2189 * @devp : pointer to our soft state
2191 * Interrupt service routine for memory-mapped mailbox controllers.
2194 megaraid_isr(int irq, void *devp)
2196 adapter_t *adapter = devp;
2199 handled = megaraid_ack_sequence(adapter);
2201 /* Loop through any pending requests */
2202 if (!adapter->quiescent) {
2203 megaraid_mbox_runpendq(adapter, NULL);
2206 return IRQ_RETVAL(handled);
2211 * megaraid_mbox_sync_scb - sync kernel buffers
2212 * @adapter : controller's soft state
2213 * @scb : pointer to the resource packet
2215 * DMA sync if required.
2218 megaraid_mbox_sync_scb(adapter_t *adapter, scb_t *scb)
2222 ccb = (mbox_ccb_t *)scb->ccb;
2224 if (scb->dma_direction == PCI_DMA_FROMDEVICE)
2225 pci_dma_sync_sg_for_cpu(adapter->pdev,
2226 scsi_sglist(scb->scp),
2227 scsi_sg_count(scb->scp),
2228 PCI_DMA_FROMDEVICE);
2230 scsi_dma_unmap(scb->scp);
2236 * megaraid_mbox_dpc - the tasklet to complete the commands from completed list
2237 * @devp : pointer to HBA soft state
2239 * Pick up the commands from the completed list and send back to the owners.
2240 * This is a reentrant function and does not assume any locks are held while
2241 * it is being called.
2244 megaraid_mbox_dpc(unsigned long devp)
2246 adapter_t *adapter = (adapter_t *)devp;
2247 mraid_device_t *raid_dev;
2248 struct list_head clist;
2249 struct scatterlist *sgl;
2252 struct scsi_cmnd *scp;
2253 mraid_passthru_t *pthru;
2254 mraid_epassthru_t *epthru;
2260 unsigned long flags;
2266 if (!adapter) return;
2268 raid_dev = ADAP2RAIDDEV(adapter);
2270 // move the SCBs from the completed list to our local list
2271 INIT_LIST_HEAD(&clist);
2273 spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags);
2275 list_splice_init(&adapter->completed_list, &clist);
2277 spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags);
2280 list_for_each_entry_safe(scb, tmp, &clist, list) {
2282 status = scb->status;
2284 ccb = (mbox_ccb_t *)scb->ccb;
2286 epthru = ccb->epthru;
2289 // Make sure f/w has completed a valid command
2290 if (scb->state != SCB_ISSUED) {
2291 con_log(CL_ANN, (KERN_CRIT
2292 "megaraid critical err: invalid command %d:%d:%p\n",
2293 scb->sno, scb->state, scp));
2295 continue; // Must never happen!
2298 // check for the management command and complete it right away
2299 if (scb->sno >= MBOX_MAX_SCSI_CMDS) {
2300 scb->state = SCB_FREE;
2301 scb->status = status;
2303 // remove from local clist
2304 list_del_init(&scb->list);
2306 kioc = (uioc_t *)scb->gp;
2309 megaraid_mbox_mm_done(adapter, scb);
2314 // Was an abort issued for this command earlier
2315 if (scb->state & SCB_ABORT) {
2316 con_log(CL_ANN, (KERN_NOTICE
2317 "megaraid: aborted cmd %lx[%x] completed\n",
2318 scp->serial_number, scb->sno));
2322 * If the inquiry came of a disk drive which is not part of
2323 * any RAID array, expose it to the kernel. For this to be
2324 * enabled, user must set the "megaraid_expose_unconf_disks"
2325 * flag to 1 by specifying it on module parameter list.
2326 * This would enable data migration off drives from other
2329 islogical = MRAID_IS_LOGICAL(adapter, scp);
2330 if (scp->cmnd[0] == INQUIRY && status == 0 && islogical == 0
2331 && IS_RAID_CH(raid_dev, scb->dev_channel)) {
2333 sgl = scsi_sglist(scp);
2335 c = *(unsigned char *)
2336 (page_address((&sgl[0])->page) +
2339 con_log(CL_ANN, (KERN_WARNING
2340 "megaraid mailbox: invalid sg:%d\n",
2345 if ((c & 0x1F ) == TYPE_DISK) {
2346 pdev_index = (scb->dev_channel * 16) +
2349 raid_dev->pdrv_state[pdev_index] & 0x0F;
2351 if (pdev_state == PDRV_ONLINE ||
2352 pdev_state == PDRV_FAILED ||
2353 pdev_state == PDRV_RBLD ||
2354 pdev_state == PDRV_HOTSPARE ||
2355 megaraid_expose_unconf_disks == 0) {
2362 // Convert MegaRAID status to Linux error code
2367 scp->result = (DID_OK << 16);
2372 /* set sense_buffer and result fields */
2373 if (mbox->cmd == MBOXCMD_PASSTHRU ||
2374 mbox->cmd == MBOXCMD_PASSTHRU64) {
2376 memcpy(scp->sense_buffer, pthru->reqsensearea,
2379 scp->result = DRIVER_SENSE << 24 |
2380 DID_OK << 16 | CHECK_CONDITION << 1;
2383 if (mbox->cmd == MBOXCMD_EXTPTHRU) {
2385 memcpy(scp->sense_buffer,
2386 epthru->reqsensearea, 14);
2388 scp->result = DRIVER_SENSE << 24 |
2390 CHECK_CONDITION << 1;
2392 scp->sense_buffer[0] = 0x70;
2393 scp->sense_buffer[2] = ABORTED_COMMAND;
2394 scp->result = CHECK_CONDITION << 1;
2401 scp->result = DID_BUS_BUSY << 16 | status;
2407 * If TEST_UNIT_READY fails, we know RESERVATION_STATUS
2410 if (scp->cmnd[0] == TEST_UNIT_READY) {
2411 scp->result = DID_ERROR << 16 |
2412 RESERVATION_CONFLICT << 1;
2416 * Error code returned is 1 if Reserve or Release
2417 * failed or the input parameter is invalid
2419 if (status == 1 && (scp->cmnd[0] == RESERVE ||
2420 scp->cmnd[0] == RELEASE)) {
2422 scp->result = DID_ERROR << 16 |
2423 RESERVATION_CONFLICT << 1;
2426 scp->result = DID_BAD_TARGET << 16 | status;
2430 // print a debug message for all failed commands
2432 megaraid_mbox_display_scb(adapter, scb);
2435 // Free our internal resources and call the mid-layer callback
2437 megaraid_mbox_sync_scb(adapter, scb);
2439 // remove from local clist
2440 list_del_init(&scb->list);
2442 // put back in free list
2443 megaraid_dealloc_scb(adapter, scb);
2445 // send the scsi packet back to kernel
2446 scp->scsi_done(scp);
2454 * megaraid_abort_handler - abort the scsi command
2455 * @scp : command to be aborted
2457 * Abort a previous SCSI request. Only commands on the pending list can be
2458 * aborted. All the commands issued to the F/W must complete.
2461 megaraid_abort_handler(struct scsi_cmnd *scp)
2464 mraid_device_t *raid_dev;
2468 unsigned long flags;
2472 adapter = SCP2ADAPTER(scp);
2473 raid_dev = ADAP2RAIDDEV(adapter);
2475 con_log(CL_ANN, (KERN_WARNING
2476 "megaraid: aborting-%ld cmd=%x <c=%d t=%d l=%d>\n",
2477 scp->serial_number, scp->cmnd[0], SCP2CHANNEL(scp),
2478 SCP2TARGET(scp), SCP2LUN(scp)));
2480 // If FW has stopped responding, simply return failure
2481 if (raid_dev->hw_error) {
2482 con_log(CL_ANN, (KERN_NOTICE
2483 "megaraid: hw error, not aborting\n"));
2487 // There might a race here, where the command was completed by the
2488 // firmware and now it is on the completed list. Before we could
2489 // complete the command to the kernel in dpc, the abort came.
2490 // Find out if this is the case to avoid the race.
2492 spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags);
2493 list_for_each_entry_safe(scb, tmp, &adapter->completed_list, list) {
2495 if (scb->scp == scp) { // Found command
2497 list_del_init(&scb->list); // from completed list
2499 con_log(CL_ANN, (KERN_WARNING
2500 "megaraid: %ld:%d[%d:%d], abort from completed list\n",
2501 scp->serial_number, scb->sno,
2502 scb->dev_channel, scb->dev_target));
2504 scp->result = (DID_ABORT << 16);
2505 scp->scsi_done(scp);
2507 megaraid_dealloc_scb(adapter, scb);
2509 spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter),
2515 spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags);
2518 // Find out if this command is still on the pending list. If it is and
2519 // was never issued, abort and return success. If the command is owned
2520 // by the firmware, we must wait for it to complete by the FW.
2521 spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags);
2522 list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) {
2524 if (scb->scp == scp) { // Found command
2526 list_del_init(&scb->list); // from pending list
2528 ASSERT(!(scb->state & SCB_ISSUED));
2530 con_log(CL_ANN, (KERN_WARNING
2531 "megaraid abort: %ld[%d:%d], driver owner\n",
2532 scp->serial_number, scb->dev_channel,
2535 scp->result = (DID_ABORT << 16);
2536 scp->scsi_done(scp);
2538 megaraid_dealloc_scb(adapter, scb);
2540 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter),
2546 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags);
2549 // Check do we even own this command, in which case this would be
2550 // owned by the firmware. The only way to locate the FW scb is to
2551 // traverse through the list of all SCB, since driver does not
2552 // maintain these SCBs on any list
2554 spin_lock_irq(&adapter->lock);
2555 for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) {
2556 scb = adapter->kscb_list + i;
2558 if (scb->scp == scp) {
2562 if (!(scb->state & SCB_ISSUED)) {
2563 con_log(CL_ANN, (KERN_WARNING
2564 "megaraid abort: %ld%d[%d:%d], invalid state\n",
2565 scp->serial_number, scb->sno, scb->dev_channel,
2570 con_log(CL_ANN, (KERN_WARNING
2571 "megaraid abort: %ld:%d[%d:%d], fw owner\n",
2572 scp->serial_number, scb->sno, scb->dev_channel,
2577 spin_unlock_irq(&adapter->lock);
2580 con_log(CL_ANN, (KERN_WARNING
2581 "megaraid abort: scsi cmd:%ld, do now own\n",
2582 scp->serial_number));
2584 // FIXME: Should there be a callback for this command?
2588 // We cannot actually abort a command owned by firmware, return
2589 // failure and wait for reset. In host reset handler, we will find out
2590 // if the HBA is still live
2595 * megaraid_reset_handler - device reset hadler for mailbox based driver
2596 * @scp : reference command
2598 * Reset handler for the mailbox based controller. First try to find out if
2599 * the FW is still live, in which case the outstanding commands counter mut go
2600 * down to 0. If that happens, also issue the reservation reset command to
2601 * relinquish (possible) reservations on the logical drives connected to this
2605 megaraid_reset_handler(struct scsi_cmnd *scp)
2610 mraid_device_t *raid_dev;
2611 unsigned long flags;
2612 uint8_t raw_mbox[sizeof(mbox_t)];
2614 int recovery_window;
2619 adapter = SCP2ADAPTER(scp);
2620 raid_dev = ADAP2RAIDDEV(adapter);
2622 // return failure if adapter is not responding
2623 if (raid_dev->hw_error) {
2624 con_log(CL_ANN, (KERN_NOTICE
2625 "megaraid: hw error, cannot reset\n"));
2630 // Under exceptional conditions, FW can take up to 3 minutes to
2631 // complete command processing. Wait for additional 2 minutes for the
2632 // pending commands counter to go down to 0. If it doesn't, let the
2633 // controller be marked offline
2634 // Also, reset all the commands currently owned by the driver
2635 spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags);
2636 list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) {
2637 list_del_init(&scb->list); // from pending list
2639 if (scb->sno >= MBOX_MAX_SCSI_CMDS) {
2640 con_log(CL_ANN, (KERN_WARNING
2641 "megaraid: IOCTL packet with %d[%d:%d] being reset\n",
2642 scb->sno, scb->dev_channel, scb->dev_target));
2646 kioc = (uioc_t *)scb->gp;
2647 kioc->status = -EFAULT;
2649 megaraid_mbox_mm_done(adapter, scb);
2651 if (scb->scp == scp) { // Found command
2652 con_log(CL_ANN, (KERN_WARNING
2653 "megaraid: %ld:%d[%d:%d], reset from pending list\n",
2654 scp->serial_number, scb->sno,
2655 scb->dev_channel, scb->dev_target));
2657 con_log(CL_ANN, (KERN_WARNING
2658 "megaraid: IO packet with %d[%d:%d] being reset\n",
2659 scb->sno, scb->dev_channel, scb->dev_target));
2662 scb->scp->result = (DID_RESET << 16);
2663 scb->scp->scsi_done(scb->scp);
2665 megaraid_dealloc_scb(adapter, scb);
2668 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags);
2670 if (adapter->outstanding_cmds) {
2671 con_log(CL_ANN, (KERN_NOTICE
2672 "megaraid: %d outstanding commands. Max wait %d sec\n",
2673 adapter->outstanding_cmds,
2674 (MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT)));
2677 recovery_window = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT;
2679 recovering = adapter->outstanding_cmds;
2681 for (i = 0; i < recovery_window; i++) {
2683 megaraid_ack_sequence(adapter);
2685 // print a message once every 5 seconds only
2688 "megaraid mbox: Wait for %d commands to complete:%d\n",
2689 adapter->outstanding_cmds,
2690 (MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT) - i));
2693 // bailout if no recovery happended in reset time
2694 if (adapter->outstanding_cmds == 0) {
2701 spin_lock(&adapter->lock);
2703 // If still outstanding commands, bail out
2704 if (adapter->outstanding_cmds) {
2705 con_log(CL_ANN, (KERN_WARNING
2706 "megaraid mbox: critical hardware error!\n"));
2708 raid_dev->hw_error = 1;
2714 con_log(CL_ANN, (KERN_NOTICE
2715 "megaraid mbox: reset sequence completed sucessfully\n"));
2719 // If the controller supports clustering, reset reservations
2725 // clear reservations if any
2726 raw_mbox[0] = CLUSTER_CMD;
2727 raw_mbox[2] = RESET_RESERVATIONS;
2730 if (mbox_post_sync_cmd_fast(adapter, raw_mbox) == 0) {
2732 (KERN_INFO "megaraid: reservation reset\n"));
2736 con_log(CL_ANN, (KERN_WARNING
2737 "megaraid: reservation reset failed\n"));
2741 spin_unlock_irq(&adapter->lock);
2746 * START: internal commands library
2748 * This section of the driver has the common routine used by the driver and
2749 * also has all the FW routines
2753 * mbox_post_sync_cmd() - blocking command to the mailbox based controllers
2754 * @adapter : controller's soft state
2755 * @raw_mbox : the mailbox
2757 * Issue a scb in synchronous and non-interrupt mode for mailbox based
2761 mbox_post_sync_cmd(adapter_t *adapter, uint8_t raw_mbox[])
2763 mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
2770 mbox64 = raid_dev->mbox64;
2771 mbox = raid_dev->mbox;
2774 * Wait until mailbox is free
2776 if (megaraid_busywait_mbox(raid_dev) != 0)
2777 goto blocked_mailbox;
2780 * Copy mailbox data into host structure
2782 memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 16);
2787 mbox->numstatus = 0xFF;
2788 mbox->status = 0xFF;
2791 WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1);
2793 // wait for maximum 1 second for status to post. If the status is not
2794 // available within 1 second, assume FW is initializing and wait
2795 // for an extended amount of time
2796 if (mbox->numstatus == 0xFF) { // status not yet available
2799 for (i = 0; mbox->numstatus == 0xFF && i < 1000; i++) {
2806 con_log(CL_ANN, (KERN_NOTICE
2807 "megaraid mailbox: wait for FW to boot "));
2809 for (i = 0; (mbox->numstatus == 0xFF) &&
2810 (i < MBOX_RESET_WAIT); i++) {
2812 con_log(CL_ANN, ("\b\b\b\b\b[%03d]",
2813 MBOX_RESET_WAIT - i));
2817 if (i == MBOX_RESET_WAIT) {
2820 "\nmegaraid mailbox: status not available\n"));
2824 con_log(CL_ANN, ("\b\b\b\b\b[ok] \n"));
2828 // wait for maximum 1 second for poll semaphore
2829 if (mbox->poll != 0x77) {
2832 for (i = 0; (mbox->poll != 0x77) && (i < 1000); i++) {
2838 con_log(CL_ANN, (KERN_WARNING
2839 "megaraid mailbox: could not get poll semaphore\n"));
2844 WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x2);
2847 // wait for maximum 1 second for acknowledgement
2848 if (RDINDOOR(raid_dev) & 0x2) {
2851 for (i = 0; (RDINDOOR(raid_dev) & 0x2) && (i < 1000); i++) {
2857 con_log(CL_ANN, (KERN_WARNING
2858 "megaraid mailbox: could not acknowledge\n"));
2865 status = mbox->status;
2867 // invalidate the completed command id array. After command
2868 // completion, firmware would write the valid id.
2869 mbox->numstatus = 0xFF;
2870 mbox->status = 0xFF;
2871 for (i = 0; i < MBOX_MAX_FIRMWARE_STATUS; i++) {
2872 mbox->completed[i] = 0xFF;
2879 con_log(CL_ANN, (KERN_WARNING "megaraid: blocked mailbox\n") );
2885 * mbox_post_sync_cmd_fast - blocking command to the mailbox based controllers
2886 * @adapter : controller's soft state
2887 * @raw_mbox : the mailbox
2889 * Issue a scb in synchronous and non-interrupt mode for mailbox based
2890 * controllers. This is a faster version of the synchronous command and
2891 * therefore can be called in interrupt-context as well.
2894 mbox_post_sync_cmd_fast(adapter_t *adapter, uint8_t raw_mbox[])
2896 mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
2901 mbox = raid_dev->mbox;
2903 // return immediately if the mailbox is busy
2904 if (mbox->busy) return -1;
2906 // Copy mailbox data into host structure
2907 memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 14);
2912 mbox->numstatus = 0xFF;
2913 mbox->status = 0xFF;
2916 WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1);
2918 for (i = 0; i < MBOX_SYNC_WAIT_CNT; i++) {
2919 if (mbox->numstatus != 0xFF) break;
2921 udelay(MBOX_SYNC_DELAY_200);
2924 if (i == MBOX_SYNC_WAIT_CNT) {
2925 // We may need to re-calibrate the counter
2926 con_log(CL_ANN, (KERN_CRIT
2927 "megaraid: fast sync command timed out\n"));
2930 WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x2);
2933 return mbox->status;
2938 * megaraid_busywait_mbox() - Wait until the controller's mailbox is available
2939 * @raid_dev : RAID device (HBA) soft state
2941 * Wait until the controller's mailbox is available to accept more commands.
2942 * Wait for at most 1 second.
2945 megaraid_busywait_mbox(mraid_device_t *raid_dev)
2947 mbox_t *mbox = raid_dev->mbox;
2952 for (i = 0; mbox->busy && i < 1000; i++)
2956 if (i < 1000) return 0;
2962 * megaraid_mbox_product_info - some static information about the controller
2963 * @adapter : our soft state
2965 * Issue commands to the controller to grab some parameters required by our
2969 megaraid_mbox_product_info(adapter_t *adapter)
2971 mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
2973 uint8_t raw_mbox[sizeof(mbox_t)];
2974 mraid_pinfo_t *pinfo;
2975 dma_addr_t pinfo_dma_h;
2976 mraid_inquiry3_t *mraid_inq3;
2980 memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox));
2981 mbox = (mbox_t *)raw_mbox;
2984 * Issue an ENQUIRY3 command to find out certain adapter parameters,
2985 * e.g., max channels, max commands etc.
2987 pinfo = pci_alloc_consistent(adapter->pdev, sizeof(mraid_pinfo_t),
2990 if (pinfo == NULL) {
2991 con_log(CL_ANN, (KERN_WARNING
2992 "megaraid: out of memory, %s %d\n", __FUNCTION__,
2997 memset(pinfo, 0, sizeof(mraid_pinfo_t));
2999 mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h;
3000 memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE);
3002 raw_mbox[0] = FC_NEW_CONFIG;
3003 raw_mbox[2] = NC_SUBOP_ENQUIRY3;
3004 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL;
3006 // Issue the command
3007 if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) {
3009 con_log(CL_ANN, (KERN_WARNING "megaraid: Inquiry3 failed\n"));
3011 pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t),
3012 pinfo, pinfo_dma_h);
3018 * Collect information about state of each physical drive
3019 * attached to the controller. We will expose all the disks
3020 * which are not part of RAID
3022 mraid_inq3 = (mraid_inquiry3_t *)adapter->ibuf;
3023 for (i = 0; i < MBOX_MAX_PHYSICAL_DRIVES; i++) {
3024 raid_dev->pdrv_state[i] = mraid_inq3->pdrv_state[i];
3028 * Get product info for information like number of channels,
3029 * maximum commands supported.
3031 memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox));
3032 mbox->xferaddr = (uint32_t)pinfo_dma_h;
3034 raw_mbox[0] = FC_NEW_CONFIG;
3035 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO;
3037 if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) {
3039 con_log(CL_ANN, (KERN_WARNING
3040 "megaraid: product info failed\n"));
3042 pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t),
3043 pinfo, pinfo_dma_h);
3049 * Setup some parameters for host, as required by our caller
3051 adapter->max_channel = pinfo->nchannels;
3054 * we will export all the logical drives on a single channel.
3055 * Add 1 since inquires do not come for inititor ID
3057 adapter->max_target = MAX_LOGICAL_DRIVES_40LD + 1;
3058 adapter->max_lun = 8; // up to 8 LUNs for non-disk devices
3061 * These are the maximum outstanding commands for the scsi-layer
3063 adapter->max_cmds = MBOX_MAX_SCSI_CMDS;
3065 memset(adapter->fw_version, 0, VERSION_SIZE);
3066 memset(adapter->bios_version, 0, VERSION_SIZE);
3068 memcpy(adapter->fw_version, pinfo->fw_version, 4);
3069 adapter->fw_version[4] = 0;
3071 memcpy(adapter->bios_version, pinfo->bios_version, 4);
3072 adapter->bios_version[4] = 0;
3074 con_log(CL_ANN, (KERN_NOTICE
3075 "megaraid: fw version:[%s] bios version:[%s]\n",
3076 adapter->fw_version, adapter->bios_version));
3078 pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), pinfo,
3087 * megaraid_mbox_extended_cdb - check for support for extended CDBs
3088 * @adapter : soft state for the controller
3090 * This routine check whether the controller in question supports extended
3091 * ( > 10 bytes ) CDBs.
3094 megaraid_mbox_extended_cdb(adapter_t *adapter)
3097 uint8_t raw_mbox[sizeof(mbox_t)];
3100 mbox = (mbox_t *)raw_mbox;
3102 memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox));
3103 mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h;
3105 memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE);
3107 raw_mbox[0] = MAIN_MISC_OPCODE;
3108 raw_mbox[2] = SUPPORT_EXT_CDB;
3114 if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) {
3123 * megaraid_mbox_support_ha - Do we support clustering
3124 * @adapter : soft state for the controller
3125 * @init_id : ID of the initiator
3127 * Determine if the firmware supports clustering and the ID of the initiator.
3130 megaraid_mbox_support_ha(adapter_t *adapter, uint16_t *init_id)
3133 uint8_t raw_mbox[sizeof(mbox_t)];
3137 mbox = (mbox_t *)raw_mbox;
3139 memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox));
3141 mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h;
3143 memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE);
3145 raw_mbox[0] = GET_TARGET_ID;
3147 // Issue the command
3150 if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) {
3152 *init_id = *(uint8_t *)adapter->ibuf;
3154 con_log(CL_ANN, (KERN_INFO
3155 "megaraid: cluster firmware, initiator ID: %d\n",
3166 * megaraid_mbox_support_random_del - Do we support random deletion
3167 * @adapter : soft state for the controller
3169 * Determine if the firmware supports random deletion.
3170 * Return: 1 is operation supported, 0 otherwise
3173 megaraid_mbox_support_random_del(adapter_t *adapter)
3176 uint8_t raw_mbox[sizeof(mbox_t)];
3180 mbox = (mbox_t *)raw_mbox;
3182 memset((caddr_t)raw_mbox, 0, sizeof(mbox_t));
3184 raw_mbox[0] = FC_DEL_LOGDRV;
3185 raw_mbox[2] = OP_SUP_DEL_LOGDRV;
3187 // Issue the command
3189 if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) {
3191 con_log(CL_DLEVEL1, ("megaraid: supports random deletion\n"));
3201 * megaraid_mbox_get_max_sg - maximum sg elements supported by the firmware
3202 * @adapter : soft state for the controller
3204 * Find out the maximum number of scatter-gather elements supported by the
3208 megaraid_mbox_get_max_sg(adapter_t *adapter)
3211 uint8_t raw_mbox[sizeof(mbox_t)];
3215 mbox = (mbox_t *)raw_mbox;
3217 memset((caddr_t)raw_mbox, 0, sizeof(mbox_t));
3219 mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h;
3221 memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE);
3223 raw_mbox[0] = MAIN_MISC_OPCODE;
3224 raw_mbox[2] = GET_MAX_SG_SUPPORT;
3226 // Issue the command
3227 if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) {
3228 nsg = *(uint8_t *)adapter->ibuf;
3231 nsg = MBOX_DEFAULT_SG_SIZE;
3234 if (nsg > MBOX_MAX_SG_SIZE) nsg = MBOX_MAX_SG_SIZE;
3241 * megaraid_mbox_enum_raid_scsi - enumerate the RAID and SCSI channels
3242 * @adapter : soft state for the controller
3244 * Enumerate the RAID and SCSI channels for ROMB platforms so that channels
3245 * can be exported as regular SCSI channels.
3248 megaraid_mbox_enum_raid_scsi(adapter_t *adapter)
3250 mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
3252 uint8_t raw_mbox[sizeof(mbox_t)];
3255 mbox = (mbox_t *)raw_mbox;
3257 memset((caddr_t)raw_mbox, 0, sizeof(mbox_t));
3259 mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h;
3261 memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE);
3263 raw_mbox[0] = CHNL_CLASS;
3264 raw_mbox[2] = GET_CHNL_CLASS;
3266 // Issue the command. If the command fails, all channels are RAID
3268 raid_dev->channel_class = 0xFF;
3269 if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) {
3270 raid_dev->channel_class = *(uint8_t *)adapter->ibuf;
3278 * megaraid_mbox_flush_cache - flush adapter and disks cache
3279 * @adapter : soft state for the controller
3281 * Flush adapter cache followed by disks cache.
3284 megaraid_mbox_flush_cache(adapter_t *adapter)
3287 uint8_t raw_mbox[sizeof(mbox_t)];
3290 mbox = (mbox_t *)raw_mbox;
3292 memset((caddr_t)raw_mbox, 0, sizeof(mbox_t));
3294 raw_mbox[0] = FLUSH_ADAPTER;
3296 if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) {
3297 con_log(CL_ANN, ("megaraid: flush adapter failed\n"));
3300 raw_mbox[0] = FLUSH_SYSTEM;
3302 if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) {
3303 con_log(CL_ANN, ("megaraid: flush disks cache failed\n"));
3311 * megaraid_mbox_fire_sync_cmd - fire the sync cmd
3312 * @adapter : soft state for the controller
3314 * Clears the pending cmds in FW and reinits its RAID structs.
3317 megaraid_mbox_fire_sync_cmd(adapter_t *adapter)
3320 uint8_t raw_mbox[sizeof(mbox_t)];
3321 mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
3327 mbox = (mbox_t *)raw_mbox;
3329 memset((caddr_t)raw_mbox, 0, sizeof(mbox_t));
3333 mbox64 = raid_dev->mbox64;
3334 mbox = raid_dev->mbox;
3336 /* Wait until mailbox is free */
3337 if (megaraid_busywait_mbox(raid_dev) != 0) {
3339 goto blocked_mailbox;
3342 /* Copy mailbox data into host structure */
3343 memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 16);
3348 mbox->numstatus = 0;
3352 WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1);
3354 /* Wait for maximum 1 min for status to post.
3355 * If the Firmware SUPPORTS the ABOVE COMMAND,
3356 * mbox->cmd will be set to 0
3358 * the firmware will reject the command with
3359 * mbox->numstatus set to 1
3364 while (!mbox->numstatus && mbox->cmd == 0xFF) {
3368 if (i > 1000 * 60) {
3373 if (mbox->numstatus == 1)
3374 status = 1; /*cmd not supported*/
3376 /* Check for interrupt line */
3377 dword = RDOUTDOOR(raid_dev);
3378 WROUTDOOR(raid_dev, dword);
3379 WRINDOOR(raid_dev,2);
3384 con_log(CL_ANN, (KERN_WARNING "megaraid: blocked mailbox\n"));
3389 * megaraid_mbox_display_scb - display SCB information, mostly debug purposes
3390 * @adapter : controller's soft state
3391 * @scb : SCB to be displayed
3392 * @level : debug level for console print
3394 * Diplay information about the given SCB iff the current debug level is
3398 megaraid_mbox_display_scb(adapter_t *adapter, scb_t *scb)
3401 struct scsi_cmnd *scp;
3407 ccb = (mbox_ccb_t *)scb->ccb;
3413 con_log(level, (KERN_NOTICE
3414 "megaraid mailbox: status:%#x cmd:%#x id:%#x ", scb->status,
3415 mbox->cmd, scb->sno));
3417 con_log(level, ("sec:%#x lba:%#x addr:%#x ld:%d sg:%d\n",
3418 mbox->numsectors, mbox->lba, mbox->xferaddr, mbox->logdrv,
3423 con_log(level, (KERN_NOTICE "scsi cmnd: "));
3425 for (i = 0; i < scp->cmd_len; i++) {
3426 con_log(level, ("%#2.02x ", scp->cmnd[i]));
3429 con_log(level, ("\n"));
3436 * megaraid_mbox_setup_device_map - manage device ids
3437 * @adapter : Driver's soft state
3439 * Manange the device ids to have an appropraite mapping between the kernel
3440 * scsi addresses and megaraid scsi and logical drive addresses. We export
3441 * scsi devices on their actual addresses, whereas the logical drives are
3442 * exported on a virtual scsi channel.
3445 megaraid_mbox_setup_device_map(adapter_t *adapter)
3451 * First fill the values on the logical drive channel
3453 for (t = 0; t < LSI_MAX_LOGICAL_DRIVES_64LD; t++)
3454 adapter->device_ids[adapter->max_channel][t] =
3455 (t < adapter->init_id) ? t : t - 1;
3457 adapter->device_ids[adapter->max_channel][adapter->init_id] = 0xFF;
3460 * Fill the values on the physical devices channels
3462 for (c = 0; c < adapter->max_channel; c++)
3463 for (t = 0; t < LSI_MAX_LOGICAL_DRIVES_64LD; t++)
3464 adapter->device_ids[c][t] = (c << 8) | t;
3469 * END: internal commands library
3473 * START: Interface for the common management module
3475 * This is the module, which interfaces with the common mangement module to
3476 * provide support for ioctl and sysfs
3480 * megaraid_cmm_register - register with the mangement module
3481 * @adapter : HBA soft state
3483 * Register with the management module, which allows applications to issue
3484 * ioctl calls to the drivers. This interface is used by the management module
3485 * to setup sysfs support as well.
3488 megaraid_cmm_register(adapter_t *adapter)
3490 mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
3497 // Allocate memory for the base list of scb for management module.
3498 adapter->uscb_list = kmalloc(sizeof(scb_t) * MBOX_MAX_USER_CMDS,
3501 if (adapter->uscb_list == NULL) {
3502 con_log(CL_ANN, (KERN_WARNING
3503 "megaraid: out of memory, %s %d\n", __FUNCTION__,
3507 memset(adapter->uscb_list, 0, sizeof(scb_t) * MBOX_MAX_USER_CMDS);
3510 // Initialize the synchronization parameters for resources for
3511 // commands for management module
3512 INIT_LIST_HEAD(&adapter->uscb_pool);
3514 spin_lock_init(USER_FREE_LIST_LOCK(adapter));
3518 // link all the packets. Note, CCB for commands, coming from the
3519 // commom management module, mailbox physical address are already
3520 // setup by it. We just need placeholder for that in our local command
3522 for (i = 0; i < MBOX_MAX_USER_CMDS; i++) {
3524 scb = adapter->uscb_list + i;
3525 ccb = raid_dev->uccb_list + i;
3527 scb->ccb = (caddr_t)ccb;
3528 ccb->mbox64 = raid_dev->umbox64 + i;
3529 ccb->mbox = &ccb->mbox64->mbox32;
3530 ccb->raw_mbox = (uint8_t *)ccb->mbox;
3534 // COMMAND ID 0 - (MBOX_MAX_SCSI_CMDS-1) ARE RESERVED FOR
3535 // COMMANDS COMING FROM IO SUBSYSTEM (MID-LAYER)
3536 scb->sno = i + MBOX_MAX_SCSI_CMDS;
3539 scb->state = SCB_FREE;
3540 scb->dma_direction = PCI_DMA_NONE;
3541 scb->dma_type = MRAID_DMA_NONE;
3542 scb->dev_channel = -1;
3543 scb->dev_target = -1;
3545 // put scb in the free pool
3546 list_add_tail(&scb->list, &adapter->uscb_pool);
3549 adp.unique_id = adapter->unique_id;
3550 adp.drvr_type = DRVRTYPE_MBOX;
3551 adp.drvr_data = (unsigned long)adapter;
3552 adp.pdev = adapter->pdev;
3553 adp.issue_uioc = megaraid_mbox_mm_handler;
3554 adp.timeout = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT;
3555 adp.max_kioc = MBOX_MAX_USER_CMDS;
3557 if ((rval = mraid_mm_register_adp(&adp)) != 0) {
3559 con_log(CL_ANN, (KERN_WARNING
3560 "megaraid mbox: did not register with CMM\n"));
3562 kfree(adapter->uscb_list);
3570 * megaraid_cmm_unregister - un-register with the mangement module
3571 * @adapter : HBA soft state
3573 * Un-register with the management module.
3574 * FIXME: mgmt module must return failure for unregister if it has pending
3578 megaraid_cmm_unregister(adapter_t *adapter)
3580 kfree(adapter->uscb_list);
3581 mraid_mm_unregister_adp(adapter->unique_id);
3587 * megaraid_mbox_mm_handler - interface for CMM to issue commands to LLD
3588 * @drvr_data : LLD specific data
3589 * @kioc : CMM interface packet
3590 * @action : command action
3592 * This routine is invoked whenever the Common Mangement Module (CMM) has a
3593 * command for us. The 'action' parameter specifies if this is a new command
3597 megaraid_mbox_mm_handler(unsigned long drvr_data, uioc_t *kioc, uint32_t action)
3601 if (action != IOCTL_ISSUE) {
3602 con_log(CL_ANN, (KERN_WARNING
3603 "megaraid: unsupported management action:%#2x\n",
3608 adapter = (adapter_t *)drvr_data;
3610 // make sure this adapter is not being detached right now.
3611 if (atomic_read(&adapter->being_detached)) {
3612 con_log(CL_ANN, (KERN_WARNING
3613 "megaraid: reject management request, detaching\n"));
3617 switch (kioc->opcode) {
3621 kioc->status = gather_hbainfo(adapter, (mraid_hba_info_t *)
3622 (unsigned long)kioc->buf_vaddr);
3626 return kioc->status;
3630 return megaraid_mbox_mm_command(adapter, kioc);
3633 kioc->status = (-EINVAL);
3638 return 0; // not reached
3642 * megaraid_mbox_mm_command - issues commands routed through CMM
3643 * @adapter : HBA soft state
3644 * @kioc : management command packet
3646 * Issues commands, which are routed through the management module.
3649 megaraid_mbox_mm_command(adapter_t *adapter, uioc_t *kioc)
3651 struct list_head *head = &adapter->uscb_pool;
3656 unsigned long flags;
3658 // detach one scb from free pool
3659 spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter), flags);
3661 if (list_empty(head)) { // should never happen because of CMM
3663 con_log(CL_ANN, (KERN_WARNING
3664 "megaraid mbox: bug in cmm handler, lost resources\n"));
3666 spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags);
3671 scb = list_entry(head->next, scb_t, list);
3672 list_del_init(&scb->list);
3674 spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags);
3676 scb->state = SCB_ACTIVE;
3677 scb->dma_type = MRAID_DMA_NONE;
3678 scb->dma_direction = PCI_DMA_NONE;
3680 ccb = (mbox_ccb_t *)scb->ccb;
3681 mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf;
3682 raw_mbox = (uint8_t *)&mbox64->mbox32;
3684 memcpy(ccb->mbox64, mbox64, sizeof(mbox64_t));
3686 scb->gp = (unsigned long)kioc;
3689 * If it is a logdrv random delete operation, we have to wait till
3690 * there are no outstanding cmds at the fw and then issue it directly
3692 if (raw_mbox[0] == FC_DEL_LOGDRV && raw_mbox[2] == OP_DEL_LOGDRV) {
3694 if (wait_till_fw_empty(adapter)) {
3695 con_log(CL_ANN, (KERN_NOTICE
3696 "megaraid mbox: LD delete, timed out\n"));
3698 kioc->status = -ETIME;
3702 megaraid_mbox_mm_done(adapter, scb);
3707 INIT_LIST_HEAD(&scb->list);
3709 scb->state = SCB_ISSUED;
3710 if (mbox_post_cmd(adapter, scb) != 0) {
3712 con_log(CL_ANN, (KERN_NOTICE
3713 "megaraid mbox: LD delete, mailbox busy\n"));
3715 kioc->status = -EBUSY;
3719 megaraid_mbox_mm_done(adapter, scb);
3727 // put the command on the pending list and execute
3728 megaraid_mbox_runpendq(adapter, scb);
3735 wait_till_fw_empty(adapter_t *adapter)
3737 unsigned long flags = 0;
3742 * Set the quiescent flag to stop issuing cmds to FW.
3744 spin_lock_irqsave(&adapter->lock, flags);
3745 adapter->quiescent++;
3746 spin_unlock_irqrestore(&adapter->lock, flags);
3749 * Wait till there are no more cmds outstanding at FW. Try for at most
3752 for (i = 0; i < 60 && adapter->outstanding_cmds; i++) {
3753 con_log(CL_DLEVEL1, (KERN_INFO
3754 "megaraid: FW has %d pending commands\n",
3755 adapter->outstanding_cmds));
3760 return adapter->outstanding_cmds;
3765 * megaraid_mbox_mm_done - callback for CMM commands
3766 * @adapter : HBA soft state
3767 * @scb : completed command
3769 * Callback routine for internal commands originated from the management
3773 megaraid_mbox_mm_done(adapter_t *adapter, scb_t *scb)
3778 unsigned long flags;
3780 kioc = (uioc_t *)scb->gp;
3781 mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf;
3782 mbox64->mbox32.status = scb->status;
3783 raw_mbox = (uint8_t *)&mbox64->mbox32;
3786 // put scb in the free pool
3787 scb->state = SCB_FREE;
3790 spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter), flags);
3792 list_add(&scb->list, &adapter->uscb_pool);
3794 spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags);
3796 // if a delete logical drive operation succeeded, restart the
3798 if (raw_mbox[0] == FC_DEL_LOGDRV && raw_mbox[2] == OP_DEL_LOGDRV) {
3800 adapter->quiescent--;
3802 megaraid_mbox_runpendq(adapter, NULL);
3812 * gather_hbainfo - HBA characteristics for the applications
3813 * @adapter : HBA soft state
3814 * @hinfo : pointer to the caller's host info strucuture
3817 gather_hbainfo(adapter_t *adapter, mraid_hba_info_t *hinfo)
3821 dmajor = megaraid_mbox_version[0];
3823 hinfo->pci_vendor_id = adapter->pdev->vendor;
3824 hinfo->pci_device_id = adapter->pdev->device;
3825 hinfo->subsys_vendor_id = adapter->pdev->subsystem_vendor;
3826 hinfo->subsys_device_id = adapter->pdev->subsystem_device;
3828 hinfo->pci_bus = adapter->pdev->bus->number;
3829 hinfo->pci_dev_fn = adapter->pdev->devfn;
3830 hinfo->pci_slot = PCI_SLOT(adapter->pdev->devfn);
3831 hinfo->irq = adapter->host->irq;
3832 hinfo->baseport = ADAP2RAIDDEV(adapter)->baseport;
3834 hinfo->unique_id = (hinfo->pci_bus << 8) | adapter->pdev->devfn;
3835 hinfo->host_no = adapter->host->host_no;
3841 * END: Interface for the common management module
3847 * megaraid_sysfs_alloc_resources - allocate sysfs related resources
3848 * @adapter : controller's soft state
3850 * Allocate packets required to issue FW calls whenever the sysfs attributes
3851 * are read. These attributes would require up-to-date information from the
3852 * FW. Also set up resources for mutual exclusion to share these resources and
3855 * Return 0 on success.
3856 * Return -ERROR_CODE on failure.
3859 megaraid_sysfs_alloc_resources(adapter_t *adapter)
3861 mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
3864 raid_dev->sysfs_uioc = kmalloc(sizeof(uioc_t), GFP_KERNEL);
3866 raid_dev->sysfs_mbox64 = kmalloc(sizeof(mbox64_t), GFP_KERNEL);
3868 raid_dev->sysfs_buffer = pci_alloc_consistent(adapter->pdev,
3869 PAGE_SIZE, &raid_dev->sysfs_buffer_dma);
3871 if (!raid_dev->sysfs_uioc || !raid_dev->sysfs_mbox64 ||
3872 !raid_dev->sysfs_buffer) {
3874 con_log(CL_ANN, (KERN_WARNING
3875 "megaraid: out of memory, %s %d\n", __FUNCTION__,
3880 megaraid_sysfs_free_resources(adapter);
3883 mutex_init(&raid_dev->sysfs_mtx);
3885 init_waitqueue_head(&raid_dev->sysfs_wait_q);
3892 * megaraid_sysfs_free_resources - free sysfs related resources
3893 * @adapter : controller's soft state
3895 * Free packets allocated for sysfs FW commands
3898 megaraid_sysfs_free_resources(adapter_t *adapter)
3900 mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
3902 kfree(raid_dev->sysfs_uioc);
3903 kfree(raid_dev->sysfs_mbox64);
3905 if (raid_dev->sysfs_buffer) {
3906 pci_free_consistent(adapter->pdev, PAGE_SIZE,
3907 raid_dev->sysfs_buffer, raid_dev->sysfs_buffer_dma);
3913 * megaraid_sysfs_get_ldmap_done - callback for get ldmap
3914 * @uioc : completed packet
3916 * Callback routine called in the ISR/tasklet context for get ldmap call
3919 megaraid_sysfs_get_ldmap_done(uioc_t *uioc)
3921 adapter_t *adapter = (adapter_t *)uioc->buf_vaddr;
3922 mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
3926 wake_up(&raid_dev->sysfs_wait_q);
3931 * megaraid_sysfs_get_ldmap_timeout - timeout handling for get ldmap
3932 * @data : timed out packet
3934 * Timeout routine to recover and return to application, in case the adapter
3935 * has stopped responding. A timeout of 60 seconds for this command seems like
3939 megaraid_sysfs_get_ldmap_timeout(unsigned long data)
3941 uioc_t *uioc = (uioc_t *)data;
3942 adapter_t *adapter = (adapter_t *)uioc->buf_vaddr;
3943 mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
3945 uioc->status = -ETIME;
3947 wake_up(&raid_dev->sysfs_wait_q);
3952 * megaraid_sysfs_get_ldmap - get update logical drive map
3953 * @adapter : controller's soft state
3955 * This routine will be called whenever user reads the logical drive
3956 * attributes, go get the current logical drive mapping table from the
3957 * firmware. We use the managment API's to issue commands to the controller.
3959 * NOTE: The commands issuance functionality is not generalized and
3960 * implemented in context of "get ld map" command only. If required, the
3961 * command issuance logical can be trivially pulled out and implemented as a
3962 * standalone libary. For now, this should suffice since there is no other
3963 * user of this interface.
3965 * Return 0 on success.
3966 * Return -1 on failure.
3969 megaraid_sysfs_get_ldmap(adapter_t *adapter)
3971 mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
3976 struct timer_list sysfs_timer;
3977 struct timer_list *timerp;
3982 * Allow only one read at a time to go through the sysfs attributes
3984 mutex_lock(&raid_dev->sysfs_mtx);
3986 uioc = raid_dev->sysfs_uioc;
3987 mbox64 = raid_dev->sysfs_mbox64;
3988 ldmap = raid_dev->sysfs_buffer;
3990 memset(uioc, 0, sizeof(uioc_t));
3991 memset(mbox64, 0, sizeof(mbox64_t));
3992 memset(ldmap, 0, sizeof(raid_dev->curr_ldmap));
3994 mbox = &mbox64->mbox32;
3995 raw_mbox = (char *)mbox;
3996 uioc->cmdbuf = (uint64_t)(unsigned long)mbox64;
3997 uioc->buf_vaddr = (caddr_t)adapter;
3998 uioc->status = -ENODATA;
3999 uioc->done = megaraid_sysfs_get_ldmap_done;
4002 * Prepare the mailbox packet to get the current logical drive mapping
4005 mbox->xferaddr = (uint32_t)raid_dev->sysfs_buffer_dma;
4007 raw_mbox[0] = FC_DEL_LOGDRV;
4008 raw_mbox[2] = OP_GET_LDID_MAP;
4011 * Setup a timer to recover from a non-responding controller
4013 timerp = &sysfs_timer;
4016 timerp->function = megaraid_sysfs_get_ldmap_timeout;
4017 timerp->data = (unsigned long)uioc;
4018 timerp->expires = jiffies + 60 * HZ;
4023 * Send the command to the firmware
4025 rval = megaraid_mbox_mm_command(adapter, uioc);
4027 if (rval == 0) { // command successfully issued
4028 wait_event(raid_dev->sysfs_wait_q, (uioc->status != -ENODATA));
4031 * Check if the command timed out
4033 if (uioc->status == -ETIME) {
4034 con_log(CL_ANN, (KERN_NOTICE
4035 "megaraid: sysfs get ld map timed out\n"));
4040 rval = mbox->status;
4044 memcpy(raid_dev->curr_ldmap, ldmap,
4045 sizeof(raid_dev->curr_ldmap));
4048 con_log(CL_ANN, (KERN_NOTICE
4049 "megaraid: get ld map failed with %x\n", rval));
4053 con_log(CL_ANN, (KERN_NOTICE
4054 "megaraid: could not issue ldmap command:%x\n", rval));
4058 del_timer_sync(timerp);
4060 mutex_unlock(&raid_dev->sysfs_mtx);
4067 * megaraid_sysfs_show_app_hndl - display application handle for this adapter
4068 * @cdev : class device object representation for the host
4069 * @buf : buffer to send data to
4071 * Display the handle used by the applications while executing management
4072 * tasks on the adapter. We invoke a management module API to get the adapter
4073 * handle, since we do not interface with applications directly.
4076 megaraid_sysfs_show_app_hndl(struct class_device *cdev, char *buf)
4078 struct Scsi_Host *shost = class_to_shost(cdev);
4079 adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(shost);
4082 app_hndl = mraid_mm_adapter_app_handle(adapter->unique_id);
4084 return snprintf(buf, 8, "%u\n", app_hndl);
4089 * megaraid_sysfs_show_ldnum - display the logical drive number for this device
4090 * @dev : device object representation for the scsi device
4091 * @attr : device attribute to show
4092 * @buf : buffer to send data to
4094 * Display the logical drive number for the device in question, if it a valid
4095 * logical drive. For physical devices, "-1" is returned.
4097 * The logical drive number is displayed in following format:
4099 * <SCSI ID> <LD NUM> <LD STICKY ID> <APP ADAPTER HANDLE>
4101 * <int> <int> <int> <int>
4104 megaraid_sysfs_show_ldnum(struct device *dev, struct device_attribute *attr, char *buf)
4106 struct scsi_device *sdev = to_scsi_device(dev);
4107 adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(sdev->host);
4108 mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
4110 int logical_drv = -1;
4112 uint32_t app_hndl = 0;
4117 if (raid_dev->random_del_supported &&
4118 MRAID_IS_LOGICAL_SDEV(adapter, sdev)) {
4120 rval = megaraid_sysfs_get_ldmap(adapter);
4123 for (i = 0; i < MAX_LOGICAL_DRIVES_40LD; i++) {
4125 mapped_sdev_id = sdev->id;
4127 if (sdev->id > adapter->init_id) {
4128 mapped_sdev_id -= 1;
4131 if (raid_dev->curr_ldmap[i] == mapped_sdev_id) {
4137 ldid_map = raid_dev->curr_ldmap[i];
4139 app_hndl = mraid_mm_adapter_app_handle(
4140 adapter->unique_id);
4147 con_log(CL_ANN, (KERN_NOTICE
4148 "megaraid: sysfs get ld map failed: %x\n",
4153 return snprintf(buf, 36, "%d %d %d %d\n", scsi_id, logical_drv,
4154 ldid_map, app_hndl);
4159 * END: Mailbox Low Level Driver
4161 module_init(megaraid_init);
4162 module_exit(megaraid_exit);
4164 /* vim: set ts=8 sw=8 tw=78 ai si: */