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 : v2.20.4.9 (Jul 16 2006)
16 * Atul Mukker <Atul.Mukker@lsil.com>
17 * Sreenivas Bagalkote <Sreenivas.Bagalkote@lsil.com>
18 * Manoj Jose <Manoj.Jose@lsil.com>
19 * Seokmann Ju <Seokmann.Ju@lsil.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
*);
111 static void megaraid_mbox_display_scb(adapter_t
*, scb_t
*);
112 static void megaraid_mbox_setup_device_map(adapter_t
*);
114 static int megaraid_queue_command(struct scsi_cmnd
*,
115 void (*)(struct scsi_cmnd
*));
116 static scb_t
*megaraid_mbox_build_cmd(adapter_t
*, struct scsi_cmnd
*, int *);
117 static void megaraid_mbox_runpendq(adapter_t
*, scb_t
*);
118 static void megaraid_mbox_prepare_pthru(adapter_t
*, scb_t
*,
120 static void megaraid_mbox_prepare_epthru(adapter_t
*, scb_t
*,
123 static irqreturn_t
megaraid_isr(int, void *);
125 static void megaraid_mbox_dpc(unsigned long);
127 static ssize_t
megaraid_sysfs_show_app_hndl(struct class_device
*, char *);
128 static ssize_t
megaraid_sysfs_show_ldnum(struct device
*, struct device_attribute
*attr
, char *);
130 static int megaraid_cmm_register(adapter_t
*);
131 static int megaraid_cmm_unregister(adapter_t
*);
132 static int megaraid_mbox_mm_handler(unsigned long, uioc_t
*, uint32_t);
133 static int megaraid_mbox_mm_command(adapter_t
*, uioc_t
*);
134 static void megaraid_mbox_mm_done(adapter_t
*, scb_t
*);
135 static int gather_hbainfo(adapter_t
*, mraid_hba_info_t
*);
136 static int wait_till_fw_empty(adapter_t
*);
140 MODULE_AUTHOR("sju@lsil.com");
141 MODULE_DESCRIPTION("LSI Logic MegaRAID Mailbox Driver");
142 MODULE_LICENSE("GPL");
143 MODULE_VERSION(MEGARAID_VERSION
);
146 * ### modules parameters for driver ###
150 * Set to enable driver to expose unconfigured disk to kernel
152 static int megaraid_expose_unconf_disks
= 0;
153 module_param_named(unconf_disks
, megaraid_expose_unconf_disks
, int, 0);
154 MODULE_PARM_DESC(unconf_disks
,
155 "Set to expose unconfigured disks to kernel (default=0)");
158 * driver wait time if the adapter's mailbox is busy
160 static unsigned int max_mbox_busy_wait
= MBOX_BUSY_WAIT
;
161 module_param_named(busy_wait
, max_mbox_busy_wait
, int, 0);
162 MODULE_PARM_DESC(busy_wait
,
163 "Max wait for mailbox in microseconds if busy (default=10)");
166 * number of sectors per IO command
168 static unsigned int megaraid_max_sectors
= MBOX_MAX_SECTORS
;
169 module_param_named(max_sectors
, megaraid_max_sectors
, int, 0);
170 MODULE_PARM_DESC(max_sectors
,
171 "Maximum number of sectors per IO command (default=128)");
174 * number of commands per logical unit
176 static unsigned int megaraid_cmd_per_lun
= MBOX_DEF_CMD_PER_LUN
;
177 module_param_named(cmd_per_lun
, megaraid_cmd_per_lun
, int, 0);
178 MODULE_PARM_DESC(cmd_per_lun
,
179 "Maximum number of commands per logical unit (default=64)");
183 * Fast driver load option, skip scanning for physical devices during load.
184 * This would result in non-disk devices being skipped during driver load
185 * time. These can be later added though, using /proc/scsi/scsi
187 static unsigned int megaraid_fast_load
= 0;
188 module_param_named(fast_load
, megaraid_fast_load
, int, 0);
189 MODULE_PARM_DESC(fast_load
,
190 "Faster loading of the driver, skips physical devices! (default=0)");
194 * mraid_debug level - threshold for amount of information to be displayed by
195 * the driver. This level can be changed through modules parameters, ioctl or
196 * sysfs/proc interface. By default, print the announcement messages only.
198 int mraid_debug_level
= CL_ANN
;
199 module_param_named(debug_level
, mraid_debug_level
, int, 0);
200 MODULE_PARM_DESC(debug_level
, "Debug level for driver (default=0)");
203 * ### global data ###
205 static uint8_t megaraid_mbox_version
[8] =
206 { 0x02, 0x20, 0x04, 0x06, 3, 7, 20, 5 };
210 * PCI table for all supported controllers.
212 static struct pci_device_id pci_id_table_g
[] = {
215 PCI_DEVICE_ID_PERC4_DI_DISCOVERY
,
217 PCI_SUBSYS_ID_PERC4_DI_DISCOVERY
,
220 PCI_VENDOR_ID_LSI_LOGIC
,
221 PCI_DEVICE_ID_PERC4_SC
,
223 PCI_SUBSYS_ID_PERC4_SC
,
226 PCI_VENDOR_ID_LSI_LOGIC
,
227 PCI_DEVICE_ID_PERC4_DC
,
229 PCI_SUBSYS_ID_PERC4_DC
,
232 PCI_VENDOR_ID_LSI_LOGIC
,
239 PCI_DEVICE_ID_PERC4_DI_EVERGLADES
,
241 PCI_SUBSYS_ID_PERC4_DI_EVERGLADES
,
245 PCI_DEVICE_ID_PERC4E_SI_BIGBEND
,
247 PCI_SUBSYS_ID_PERC4E_SI_BIGBEND
,
251 PCI_DEVICE_ID_PERC4E_DI_KOBUK
,
253 PCI_SUBSYS_ID_PERC4E_DI_KOBUK
,
257 PCI_DEVICE_ID_PERC4E_DI_CORVETTE
,
259 PCI_SUBSYS_ID_PERC4E_DI_CORVETTE
,
263 PCI_DEVICE_ID_PERC4E_DI_EXPEDITION
,
265 PCI_SUBSYS_ID_PERC4E_DI_EXPEDITION
,
269 PCI_DEVICE_ID_PERC4E_DI_GUADALUPE
,
271 PCI_SUBSYS_ID_PERC4E_DI_GUADALUPE
,
274 PCI_VENDOR_ID_LSI_LOGIC
,
275 PCI_DEVICE_ID_DOBSON
,
281 PCI_DEVICE_ID_AMI_MEGARAID3
,
286 PCI_VENDOR_ID_LSI_LOGIC
,
287 PCI_DEVICE_ID_AMI_MEGARAID3
,
292 PCI_VENDOR_ID_LSI_LOGIC
,
293 PCI_DEVICE_ID_LINDSAY
,
297 {0} /* Terminating entry */
299 MODULE_DEVICE_TABLE(pci
, pci_id_table_g
);
302 static struct pci_driver megaraid_pci_driver_g
= {
304 .id_table
= pci_id_table_g
,
305 .probe
= megaraid_probe_one
,
306 .remove
= __devexit_p(megaraid_detach_one
),
307 .shutdown
= megaraid_mbox_shutdown
,
312 // definitions for the device attributes for exporting logical drive number
313 // for a scsi address (Host, Channel, Id, Lun)
315 CLASS_DEVICE_ATTR(megaraid_mbox_app_hndl
, S_IRUSR
, megaraid_sysfs_show_app_hndl
,
318 // Host template initializer for megaraid mbox sysfs device attributes
319 static struct class_device_attribute
*megaraid_shost_attrs
[] = {
320 &class_device_attr_megaraid_mbox_app_hndl
,
325 DEVICE_ATTR(megaraid_mbox_ld
, S_IRUSR
, megaraid_sysfs_show_ldnum
, NULL
);
327 // Host template initializer for megaraid mbox sysfs device attributes
328 static struct device_attribute
*megaraid_sdev_attrs
[] = {
329 &dev_attr_megaraid_mbox_ld
,
334 * megaraid_change_queue_depth - Change the device's queue depth
335 * @sdev: scsi device struct
336 * @qdepth: depth to set
341 static int megaraid_change_queue_depth(struct scsi_device
*sdev
, int qdepth
)
343 if (qdepth
> MBOX_MAX_SCSI_CMDS
)
344 qdepth
= MBOX_MAX_SCSI_CMDS
;
345 scsi_adjust_queue_depth(sdev
, 0, qdepth
);
346 return sdev
->queue_depth
;
350 * Scsi host template for megaraid unified driver
352 static struct scsi_host_template megaraid_template_g
= {
353 .module
= THIS_MODULE
,
354 .name
= "LSI Logic MegaRAID driver",
355 .proc_name
= "megaraid",
356 .queuecommand
= megaraid_queue_command
,
357 .eh_abort_handler
= megaraid_abort_handler
,
358 .eh_device_reset_handler
= megaraid_reset_handler
,
359 .eh_bus_reset_handler
= megaraid_reset_handler
,
360 .eh_host_reset_handler
= megaraid_reset_handler
,
361 .change_queue_depth
= megaraid_change_queue_depth
,
362 .use_clustering
= ENABLE_CLUSTERING
,
363 .sdev_attrs
= megaraid_sdev_attrs
,
364 .shost_attrs
= megaraid_shost_attrs
,
369 * megaraid_init - module load hook
371 * We register ourselves as hotplug enabled module and let PCI subsystem
372 * discover our adaters
379 // Announce the driver version
380 con_log(CL_ANN
, (KERN_INFO
"megaraid: %s %s\n", MEGARAID_VERSION
,
381 MEGARAID_EXT_VERSION
));
383 // check validity of module parameters
384 if (megaraid_cmd_per_lun
> MBOX_MAX_SCSI_CMDS
) {
386 con_log(CL_ANN
, (KERN_WARNING
387 "megaraid mailbox: max commands per lun reset to %d\n",
388 MBOX_MAX_SCSI_CMDS
));
390 megaraid_cmd_per_lun
= MBOX_MAX_SCSI_CMDS
;
394 // register as a PCI hot-plug driver module
395 rval
= pci_register_driver(&megaraid_pci_driver_g
);
397 con_log(CL_ANN
, (KERN_WARNING
398 "megaraid: could not register hotplug support.\n"));
406 * megaraid_exit - driver unload entry point
408 * We simply unwrap the megaraid_init routine here
413 con_log(CL_DLEVEL1
, (KERN_NOTICE
"megaraid: unloading framework\n"));
415 // unregister as PCI hotplug driver
416 pci_unregister_driver(&megaraid_pci_driver_g
);
423 * megaraid_probe_one - PCI hotplug entry point
424 * @param pdev : handle to this controller's PCI configuration space
425 * @param id : pci device id of the class of controllers
427 * This routine should be called whenever a new adapter is detected by the
428 * PCI hotplug susbsytem.
431 megaraid_probe_one(struct pci_dev
*pdev
, const struct pci_device_id
*id
)
436 // detected a new controller
437 con_log(CL_ANN
, (KERN_INFO
438 "megaraid: probe new device %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
439 pdev
->vendor
, pdev
->device
, pdev
->subsystem_vendor
,
440 pdev
->subsystem_device
));
442 con_log(CL_ANN
, ("bus %d:slot %d:func %d\n", pdev
->bus
->number
,
443 PCI_SLOT(pdev
->devfn
), PCI_FUNC(pdev
->devfn
)));
445 if (pci_enable_device(pdev
)) {
446 con_log(CL_ANN
, (KERN_WARNING
447 "megaraid: pci_enable_device failed\n"));
452 // Enable bus-mastering on this controller
453 pci_set_master(pdev
);
455 // Allocate the per driver initialization structure
456 adapter
= kmalloc(sizeof(adapter_t
), GFP_KERNEL
);
458 if (adapter
== NULL
) {
459 con_log(CL_ANN
, (KERN_WARNING
460 "megaraid: out of memory, %s %d.\n", __FUNCTION__
, __LINE__
));
464 memset(adapter
, 0, sizeof(adapter_t
));
467 // set up PCI related soft state and other pre-known parameters
468 adapter
->unique_id
= pdev
->bus
->number
<< 8 | pdev
->devfn
;
469 adapter
->irq
= pdev
->irq
;
470 adapter
->pdev
= pdev
;
472 atomic_set(&adapter
->being_detached
, 0);
474 // Setup the default DMA mask. This would be changed later on
475 // depending on hardware capabilities
476 if (pci_set_dma_mask(adapter
->pdev
, DMA_32BIT_MASK
) != 0) {
478 con_log(CL_ANN
, (KERN_WARNING
479 "megaraid: pci_set_dma_mask failed:%d\n", __LINE__
));
481 goto out_free_adapter
;
485 // Initialize the synchronization lock for kernel and LLD
486 spin_lock_init(&adapter
->lock
);
488 // Initialize the command queues: the list of free SCBs and the list
490 INIT_LIST_HEAD(&adapter
->kscb_pool
);
491 spin_lock_init(SCSI_FREE_LIST_LOCK(adapter
));
493 INIT_LIST_HEAD(&adapter
->pend_list
);
494 spin_lock_init(PENDING_LIST_LOCK(adapter
));
496 INIT_LIST_HEAD(&adapter
->completed_list
);
497 spin_lock_init(COMPLETED_LIST_LOCK(adapter
));
500 // Start the mailbox based controller
501 if (megaraid_init_mbox(adapter
) != 0) {
502 con_log(CL_ANN
, (KERN_WARNING
503 "megaraid: maibox adapter did not initialize\n"));
505 goto out_free_adapter
;
508 // Register with LSI Common Management Module
509 if (megaraid_cmm_register(adapter
) != 0) {
511 con_log(CL_ANN
, (KERN_WARNING
512 "megaraid: could not register with management module\n"));
517 // setup adapter handle in PCI soft state
518 pci_set_drvdata(pdev
, adapter
);
520 // attach with scsi mid-layer
521 if (megaraid_io_attach(adapter
) != 0) {
523 con_log(CL_ANN
, (KERN_WARNING
"megaraid: io attach failed\n"));
531 pci_set_drvdata(pdev
, NULL
);
532 megaraid_cmm_unregister(adapter
);
534 megaraid_fini_mbox(adapter
);
538 pci_disable_device(pdev
);
545 * megaraid_detach_one - release the framework resources and call LLD release
547 * @param 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 * @param device : generice 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 * @param 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 * @param 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 * @param 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
;
783 // Setup the rest of the soft state using the library of FW routines
786 // request IRQ and register the interrupt service routine
787 if (request_irq(adapter
->irq
, megaraid_isr
, IRQF_SHARED
, "megaraid",
790 con_log(CL_ANN
, (KERN_WARNING
791 "megaraid: Couldn't register IRQ %d!\n", adapter
->irq
));
797 // initialize the mutual exclusion lock for the mailbox
798 spin_lock_init(&raid_dev
->mailbox_lock
);
800 // allocate memory required for commands
801 if (megaraid_alloc_cmd_packets(adapter
) != 0) {
806 if (megaraid_mbox_product_info(adapter
) != 0) {
810 // Do we support extended CDBs
811 adapter
->max_cdb_sz
= 10;
812 if (megaraid_mbox_extended_cdb(adapter
) == 0) {
813 adapter
->max_cdb_sz
= 16;
817 * Do we support cluster environment, if we do, what is the initiator
819 * NOTE: In a non-cluster aware firmware environment, the LLD should
820 * return 7 as initiator id.
823 adapter
->init_id
= -1;
824 if (megaraid_mbox_support_ha(adapter
, &adapter
->init_id
) == 0) {
829 * Prepare the device ids array to have the mapping between the kernel
830 * device address and megaraid device address.
831 * We export the physical devices on their actual addresses. The
832 * logical drives are exported on a virtual SCSI channel
834 megaraid_mbox_setup_device_map(adapter
);
836 // If the firmware supports random deletion, update the device id map
837 if (megaraid_mbox_support_random_del(adapter
)) {
839 // Change the logical drives numbers in device_ids array one
840 // slot in device_ids is reserved for target id, that's why
842 for (i
= 0; i
<= MAX_LOGICAL_DRIVES_40LD
; i
++) {
843 adapter
->device_ids
[adapter
->max_channel
][i
] += 0x80;
845 adapter
->device_ids
[adapter
->max_channel
][adapter
->init_id
] =
848 raid_dev
->random_del_supported
= 1;
852 * find out the maximum number of scatter-gather elements supported by
855 adapter
->sglen
= megaraid_mbox_get_max_sg(adapter
);
857 // enumerate RAID and SCSI channels so that all devices on SCSI
858 // channels can later be exported, including disk devices
859 megaraid_mbox_enum_raid_scsi(adapter
);
862 * Other parameters required by upper layer
864 * maximum number of sectors per IO command
866 adapter
->max_sectors
= megaraid_max_sectors
;
869 * number of queued commands per LUN.
871 adapter
->cmd_per_lun
= megaraid_cmd_per_lun
;
874 * Allocate resources required to issue FW calls, when sysfs is
877 if (megaraid_sysfs_alloc_resources(adapter
) != 0) {
881 // Set the DMA mask to 64-bit. All supported controllers as capable of
883 pci_read_config_dword(adapter
->pdev
, PCI_CONF_AMISIG64
, &magic64
);
885 if (((magic64
== HBA_SIGNATURE_64_BIT
) &&
886 ((adapter
->pdev
->subsystem_device
!=
887 PCI_SUBSYS_ID_MEGARAID_SATA_150_6
) &&
888 (adapter
->pdev
->subsystem_device
!=
889 PCI_SUBSYS_ID_MEGARAID_SATA_150_4
))) ||
890 (adapter
->pdev
->vendor
== PCI_VENDOR_ID_LSI_LOGIC
&&
891 adapter
->pdev
->device
== PCI_DEVICE_ID_VERDE
) ||
892 (adapter
->pdev
->vendor
== PCI_VENDOR_ID_LSI_LOGIC
&&
893 adapter
->pdev
->device
== PCI_DEVICE_ID_DOBSON
) ||
894 (adapter
->pdev
->vendor
== PCI_VENDOR_ID_LSI_LOGIC
&&
895 adapter
->pdev
->device
== PCI_DEVICE_ID_LINDSAY
) ||
896 (adapter
->pdev
->vendor
== PCI_VENDOR_ID_DELL
&&
897 adapter
->pdev
->device
== PCI_DEVICE_ID_PERC4_DI_EVERGLADES
) ||
898 (adapter
->pdev
->vendor
== PCI_VENDOR_ID_DELL
&&
899 adapter
->pdev
->device
== PCI_DEVICE_ID_PERC4E_DI_KOBUK
)) {
900 if (pci_set_dma_mask(adapter
->pdev
, DMA_64BIT_MASK
)) {
901 con_log(CL_ANN
, (KERN_WARNING
902 "megaraid: DMA mask for 64-bit failed\n"));
904 if (pci_set_dma_mask (adapter
->pdev
, DMA_32BIT_MASK
)) {
905 con_log(CL_ANN
, (KERN_WARNING
906 "megaraid: 32-bit DMA mask failed\n"));
907 goto out_free_sysfs_res
;
912 // setup tasklet for DPC
913 tasklet_init(&adapter
->dpc_h
, megaraid_mbox_dpc
,
914 (unsigned long)adapter
);
916 con_log(CL_DLEVEL1
, (KERN_INFO
917 "megaraid mbox hba successfully initialized\n"));
922 megaraid_sysfs_free_resources(adapter
);
924 megaraid_free_cmd_packets(adapter
);
926 free_irq(adapter
->irq
, adapter
);
928 iounmap(raid_dev
->baseaddr
);
930 pci_release_regions(pdev
);
939 * megaraid_fini_mbox - undo controller initialization
940 * @param adapter : our soft state
943 megaraid_fini_mbox(adapter_t
*adapter
)
945 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
948 megaraid_mbox_flush_cache(adapter
);
950 tasklet_kill(&adapter
->dpc_h
);
952 megaraid_sysfs_free_resources(adapter
);
954 megaraid_free_cmd_packets(adapter
);
956 free_irq(adapter
->irq
, adapter
);
958 iounmap(raid_dev
->baseaddr
);
960 pci_release_regions(adapter
->pdev
);
969 * megaraid_alloc_cmd_packets - allocate shared mailbox
970 * @param adapter : soft state of the raid controller
972 * Allocate and align the shared mailbox. This maibox is used to issue
973 * all the commands. For IO based controllers, the mailbox is also regsitered
974 * with the FW. Allocate memory for all commands as well.
975 * This is our big allocator
978 megaraid_alloc_cmd_packets(adapter_t
*adapter
)
980 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
981 struct pci_dev
*pdev
;
985 struct mraid_pci_blk
*epthru_pci_blk
;
986 struct mraid_pci_blk
*sg_pci_blk
;
987 struct mraid_pci_blk
*mbox_pci_blk
;
990 pdev
= adapter
->pdev
;
994 * Allocate the common 16-byte aligned memory for the handshake
997 raid_dev
->una_mbox64
= pci_alloc_consistent(adapter
->pdev
,
998 sizeof(mbox64_t
), &raid_dev
->una_mbox64_dma
);
1000 if (!raid_dev
->una_mbox64
) {
1001 con_log(CL_ANN
, (KERN_WARNING
1002 "megaraid: out of memory, %s %d\n", __FUNCTION__
,
1006 memset(raid_dev
->una_mbox64
, 0, sizeof(mbox64_t
));
1009 * Align the mailbox at 16-byte boundary
1011 raid_dev
->mbox
= &raid_dev
->una_mbox64
->mbox32
;
1013 raid_dev
->mbox
= (mbox_t
*)((((unsigned long)raid_dev
->mbox
) + 15) &
1016 raid_dev
->mbox64
= (mbox64_t
*)(((unsigned long)raid_dev
->mbox
) - 8);
1018 align
= ((void *)raid_dev
->mbox
-
1019 ((void *)&raid_dev
->una_mbox64
->mbox32
));
1021 raid_dev
->mbox_dma
= (unsigned long)raid_dev
->una_mbox64_dma
+ 8 +
1024 // Allocate memory for commands issued internally
1025 adapter
->ibuf
= pci_alloc_consistent(pdev
, MBOX_IBUF_SIZE
,
1026 &adapter
->ibuf_dma_h
);
1027 if (!adapter
->ibuf
) {
1029 con_log(CL_ANN
, (KERN_WARNING
1030 "megaraid: out of memory, %s %d\n", __FUNCTION__
,
1033 goto out_free_common_mbox
;
1035 memset(adapter
->ibuf
, 0, MBOX_IBUF_SIZE
);
1037 // Allocate memory for our SCSI Command Blocks and their associated
1041 * Allocate memory for the base list of scb. Later allocate memory for
1042 * CCBs and embedded components of each CCB and point the pointers in
1043 * scb to the allocated components
1044 * NOTE: The code to allocate SCB will be duplicated in all the LLD
1045 * since the calling routine does not yet know the number of available
1048 adapter
->kscb_list
= kmalloc(sizeof(scb_t
) * MBOX_MAX_SCSI_CMDS
,
1051 if (adapter
->kscb_list
== NULL
) {
1052 con_log(CL_ANN
, (KERN_WARNING
1053 "megaraid: out of memory, %s %d\n", __FUNCTION__
,
1057 memset(adapter
->kscb_list
, 0, sizeof(scb_t
) * MBOX_MAX_SCSI_CMDS
);
1059 // memory allocation for our command packets
1060 if (megaraid_mbox_setup_dma_pools(adapter
) != 0) {
1061 con_log(CL_ANN
, (KERN_WARNING
1062 "megaraid: out of memory, %s %d\n", __FUNCTION__
,
1064 goto out_free_scb_list
;
1067 // Adjust the scb pointers and link in the free pool
1068 epthru_pci_blk
= raid_dev
->epthru_pool
;
1069 sg_pci_blk
= raid_dev
->sg_pool
;
1070 mbox_pci_blk
= raid_dev
->mbox_pool
;
1072 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
; i
++) {
1073 scb
= adapter
->kscb_list
+ i
;
1074 ccb
= raid_dev
->ccb_list
+ i
;
1076 ccb
->mbox
= (mbox_t
*)(mbox_pci_blk
[i
].vaddr
+ 16);
1077 ccb
->raw_mbox
= (uint8_t *)ccb
->mbox
;
1078 ccb
->mbox64
= (mbox64_t
*)(mbox_pci_blk
[i
].vaddr
+ 8);
1079 ccb
->mbox_dma_h
= (unsigned long)mbox_pci_blk
[i
].dma_addr
+ 16;
1081 // make sure the mailbox is aligned properly
1082 if (ccb
->mbox_dma_h
& 0x0F) {
1083 con_log(CL_ANN
, (KERN_CRIT
1084 "megaraid mbox: not aligned on 16-bytes\n"));
1086 goto out_teardown_dma_pools
;
1089 ccb
->epthru
= (mraid_epassthru_t
*)
1090 epthru_pci_blk
[i
].vaddr
;
1091 ccb
->epthru_dma_h
= epthru_pci_blk
[i
].dma_addr
;
1092 ccb
->pthru
= (mraid_passthru_t
*)ccb
->epthru
;
1093 ccb
->pthru_dma_h
= ccb
->epthru_dma_h
;
1096 ccb
->sgl64
= (mbox_sgl64
*)sg_pci_blk
[i
].vaddr
;
1097 ccb
->sgl_dma_h
= sg_pci_blk
[i
].dma_addr
;
1098 ccb
->sgl32
= (mbox_sgl32
*)ccb
->sgl64
;
1100 scb
->ccb
= (caddr_t
)ccb
;
1103 scb
->sno
= i
; // command index
1106 scb
->state
= SCB_FREE
;
1107 scb
->dma_direction
= PCI_DMA_NONE
;
1108 scb
->dma_type
= MRAID_DMA_NONE
;
1109 scb
->dev_channel
= -1;
1110 scb
->dev_target
= -1;
1112 // put scb in the free pool
1113 list_add_tail(&scb
->list
, &adapter
->kscb_pool
);
1118 out_teardown_dma_pools
:
1119 megaraid_mbox_teardown_dma_pools(adapter
);
1121 kfree(adapter
->kscb_list
);
1123 pci_free_consistent(pdev
, MBOX_IBUF_SIZE
, (void *)adapter
->ibuf
,
1124 adapter
->ibuf_dma_h
);
1125 out_free_common_mbox
:
1126 pci_free_consistent(adapter
->pdev
, sizeof(mbox64_t
),
1127 (caddr_t
)raid_dev
->una_mbox64
, raid_dev
->una_mbox64_dma
);
1134 * megaraid_free_cmd_packets - free memory
1135 * @param adapter : soft state of the raid controller
1137 * Release memory resources allocated for commands
1140 megaraid_free_cmd_packets(adapter_t
*adapter
)
1142 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
1144 megaraid_mbox_teardown_dma_pools(adapter
);
1146 kfree(adapter
->kscb_list
);
1148 pci_free_consistent(adapter
->pdev
, MBOX_IBUF_SIZE
,
1149 (void *)adapter
->ibuf
, adapter
->ibuf_dma_h
);
1151 pci_free_consistent(adapter
->pdev
, sizeof(mbox64_t
),
1152 (caddr_t
)raid_dev
->una_mbox64
, raid_dev
->una_mbox64_dma
);
1158 * megaraid_mbox_setup_dma_pools - setup dma pool for command packets
1159 * @param adapter : HBA soft state
1161 * setup the dma pools for mailbox, passthru and extended passthru structures,
1162 * and scatter-gather lists
1165 megaraid_mbox_setup_dma_pools(adapter_t
*adapter
)
1167 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
1168 struct mraid_pci_blk
*epthru_pci_blk
;
1169 struct mraid_pci_blk
*sg_pci_blk
;
1170 struct mraid_pci_blk
*mbox_pci_blk
;
1175 // Allocate memory for 16-bytes aligned mailboxes
1176 raid_dev
->mbox_pool_handle
= pci_pool_create("megaraid mbox pool",
1178 sizeof(mbox64_t
) + 16,
1181 if (raid_dev
->mbox_pool_handle
== NULL
) {
1182 goto fail_setup_dma_pool
;
1185 mbox_pci_blk
= raid_dev
->mbox_pool
;
1186 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
; i
++) {
1187 mbox_pci_blk
[i
].vaddr
= pci_pool_alloc(
1188 raid_dev
->mbox_pool_handle
,
1190 &mbox_pci_blk
[i
].dma_addr
);
1191 if (!mbox_pci_blk
[i
].vaddr
) {
1192 goto fail_setup_dma_pool
;
1197 * Allocate memory for each embedded passthru strucuture pointer
1198 * Request for a 128 bytes aligned structure for each passthru command
1200 * Since passthru and extended passthru commands are exclusive, they
1201 * share common memory pool. Passthru structures piggyback on memory
1202 * allocted to extended passthru since passthru is smaller of the two
1204 raid_dev
->epthru_pool_handle
= pci_pool_create("megaraid mbox pthru",
1205 adapter
->pdev
, sizeof(mraid_epassthru_t
), 128, 0);
1207 if (raid_dev
->epthru_pool_handle
== NULL
) {
1208 goto fail_setup_dma_pool
;
1211 epthru_pci_blk
= raid_dev
->epthru_pool
;
1212 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
; i
++) {
1213 epthru_pci_blk
[i
].vaddr
= pci_pool_alloc(
1214 raid_dev
->epthru_pool_handle
,
1216 &epthru_pci_blk
[i
].dma_addr
);
1217 if (!epthru_pci_blk
[i
].vaddr
) {
1218 goto fail_setup_dma_pool
;
1223 // Allocate memory for each scatter-gather list. Request for 512 bytes
1224 // alignment for each sg list
1225 raid_dev
->sg_pool_handle
= pci_pool_create("megaraid mbox sg",
1227 sizeof(mbox_sgl64
) * MBOX_MAX_SG_SIZE
,
1230 if (raid_dev
->sg_pool_handle
== NULL
) {
1231 goto fail_setup_dma_pool
;
1234 sg_pci_blk
= raid_dev
->sg_pool
;
1235 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
; i
++) {
1236 sg_pci_blk
[i
].vaddr
= pci_pool_alloc(
1237 raid_dev
->sg_pool_handle
,
1239 &sg_pci_blk
[i
].dma_addr
);
1240 if (!sg_pci_blk
[i
].vaddr
) {
1241 goto fail_setup_dma_pool
;
1247 fail_setup_dma_pool
:
1248 megaraid_mbox_teardown_dma_pools(adapter
);
1254 * megaraid_mbox_teardown_dma_pools - teardown dma pools for command packets
1255 * @param adapter : HBA soft state
1257 * teardown the dma pool for mailbox, passthru and extended passthru
1258 * structures, and scatter-gather lists
1261 megaraid_mbox_teardown_dma_pools(adapter_t
*adapter
)
1263 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
1264 struct mraid_pci_blk
*epthru_pci_blk
;
1265 struct mraid_pci_blk
*sg_pci_blk
;
1266 struct mraid_pci_blk
*mbox_pci_blk
;
1270 sg_pci_blk
= raid_dev
->sg_pool
;
1271 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
&& sg_pci_blk
[i
].vaddr
; i
++) {
1272 pci_pool_free(raid_dev
->sg_pool_handle
, sg_pci_blk
[i
].vaddr
,
1273 sg_pci_blk
[i
].dma_addr
);
1275 if (raid_dev
->sg_pool_handle
)
1276 pci_pool_destroy(raid_dev
->sg_pool_handle
);
1279 epthru_pci_blk
= raid_dev
->epthru_pool
;
1280 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
&& epthru_pci_blk
[i
].vaddr
; i
++) {
1281 pci_pool_free(raid_dev
->epthru_pool_handle
,
1282 epthru_pci_blk
[i
].vaddr
, epthru_pci_blk
[i
].dma_addr
);
1284 if (raid_dev
->epthru_pool_handle
)
1285 pci_pool_destroy(raid_dev
->epthru_pool_handle
);
1288 mbox_pci_blk
= raid_dev
->mbox_pool
;
1289 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
&& mbox_pci_blk
[i
].vaddr
; i
++) {
1290 pci_pool_free(raid_dev
->mbox_pool_handle
,
1291 mbox_pci_blk
[i
].vaddr
, mbox_pci_blk
[i
].dma_addr
);
1293 if (raid_dev
->mbox_pool_handle
)
1294 pci_pool_destroy(raid_dev
->mbox_pool_handle
);
1301 * megaraid_alloc_scb - detach and return a scb from the free list
1302 * @adapter : controller's soft state
1304 * return the scb from the head of the free list. NULL if there are none
1308 megaraid_alloc_scb(adapter_t
*adapter
, struct scsi_cmnd
*scp
)
1310 struct list_head
*head
= &adapter
->kscb_pool
;
1312 unsigned long flags
;
1314 // detach scb from free pool
1315 spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter
), flags
);
1317 if (list_empty(head
)) {
1318 spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter
), flags
);
1322 scb
= list_entry(head
->next
, scb_t
, list
);
1323 list_del_init(&scb
->list
);
1325 spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter
), flags
);
1327 scb
->state
= SCB_ACTIVE
;
1329 scb
->dma_type
= MRAID_DMA_NONE
;
1336 * megaraid_dealloc_scb - return the scb to the free pool
1337 * @adapter : controller's soft state
1338 * @scb : scb to be freed
1340 * return the scb back to the free list of scbs. The caller must 'flush' the
1341 * SCB before calling us. E.g., performing pci_unamp and/or pci_sync etc.
1342 * NOTE NOTE: Make sure the scb is not on any list before calling this
1346 megaraid_dealloc_scb(adapter_t
*adapter
, scb_t
*scb
)
1348 unsigned long flags
;
1350 // put scb in the free pool
1351 scb
->state
= SCB_FREE
;
1353 spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter
), flags
);
1355 list_add(&scb
->list
, &adapter
->kscb_pool
);
1357 spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter
), flags
);
1364 * megaraid_mbox_mksgl - make the scatter-gather list
1365 * @adapter - controller's soft state
1366 * @scb - scsi control block
1368 * prepare the scatter-gather list
1371 megaraid_mbox_mksgl(adapter_t
*adapter
, scb_t
*scb
)
1373 struct scatterlist
*sgl
;
1376 unsigned long offset
;
1377 struct scsi_cmnd
*scp
;
1383 ccb
= (mbox_ccb_t
*)scb
->ccb
;
1385 // no mapping required if no data to be transferred
1386 if (!scp
->request_buffer
|| !scp
->request_bufflen
)
1389 if (!scp
->use_sg
) { /* scatter-gather list not used */
1391 page
= virt_to_page(scp
->request_buffer
);
1393 offset
= ((unsigned long)scp
->request_buffer
& ~PAGE_MASK
);
1395 ccb
->buf_dma_h
= pci_map_page(adapter
->pdev
, page
, offset
,
1396 scp
->request_bufflen
,
1397 scb
->dma_direction
);
1398 scb
->dma_type
= MRAID_DMA_WBUF
;
1401 * We need to handle special 64-bit commands that need a
1405 ccb
->sgl64
[0].address
= ccb
->buf_dma_h
;
1406 ccb
->sgl64
[0].length
= scp
->request_bufflen
;
1411 sgl
= (struct scatterlist
*)scp
->request_buffer
;
1413 // The number of sg elements returned must not exceed our limit
1414 sgcnt
= pci_map_sg(adapter
->pdev
, sgl
, scp
->use_sg
,
1415 scb
->dma_direction
);
1417 if (sgcnt
> adapter
->sglen
) {
1418 con_log(CL_ANN
, (KERN_CRIT
1419 "megaraid critical: too many sg elements:%d\n",
1424 scb
->dma_type
= MRAID_DMA_WSG
;
1426 for (i
= 0; i
< sgcnt
; i
++, sgl
++) {
1427 ccb
->sgl64
[i
].address
= sg_dma_address(sgl
);
1428 ccb
->sgl64
[i
].length
= sg_dma_len(sgl
);
1431 // Return count of SG nodes
1437 * mbox_post_cmd - issue a mailbox command
1438 * @adapter - controller's soft state
1439 * @scb - command to be issued
1441 * post the command to the controller if mailbox is availble.
1444 mbox_post_cmd(adapter_t
*adapter
, scb_t
*scb
)
1446 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
1450 unsigned long flags
;
1454 ccb
= (mbox_ccb_t
*)scb
->ccb
;
1455 mbox
= raid_dev
->mbox
;
1456 mbox64
= raid_dev
->mbox64
;
1459 * Check for busy mailbox. If it is, return failure - the caller
1460 * should retry later.
1462 spin_lock_irqsave(MAILBOX_LOCK(raid_dev
), flags
);
1464 if (unlikely(mbox
->busy
)) {
1469 } while(mbox
->busy
&& (i
< max_mbox_busy_wait
));
1473 spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev
), flags
);
1480 // Copy this command's mailbox data into "adapter's" mailbox
1481 memcpy((caddr_t
)mbox64
, (caddr_t
)ccb
->mbox64
, 22);
1482 mbox
->cmdid
= scb
->sno
;
1484 adapter
->outstanding_cmds
++;
1486 if (scb
->dma_direction
== PCI_DMA_TODEVICE
) {
1487 if (!scb
->scp
->use_sg
) { // sg list not used
1488 pci_dma_sync_single_for_device(adapter
->pdev
,
1490 scb
->scp
->request_bufflen
,
1494 pci_dma_sync_sg_for_device(adapter
->pdev
,
1495 scb
->scp
->request_buffer
,
1496 scb
->scp
->use_sg
, PCI_DMA_TODEVICE
);
1500 mbox
->busy
= 1; // Set busy
1505 WRINDOOR(raid_dev
, raid_dev
->mbox_dma
| 0x1);
1507 spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev
), flags
);
1514 * megaraid_queue_command - generic queue entry point for all LLDs
1515 * @scp : pointer to the scsi command to be executed
1516 * @done : callback routine to be called after the cmd has be completed
1518 * Queue entry point for mailbox based controllers.
1521 megaraid_queue_command(struct scsi_cmnd
*scp
, void (* done
)(struct scsi_cmnd
*))
1527 adapter
= SCP2ADAPTER(scp
);
1528 scp
->scsi_done
= done
;
1532 * Allocate and build a SCB request
1533 * if_busy flag will be set if megaraid_mbox_build_cmd() command could
1534 * not allocate scb. We will return non-zero status in that case.
1535 * NOTE: scb can be null even though certain commands completed
1536 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, it would
1537 * return 0 in that case, and we would do the callback right away.
1540 scb
= megaraid_mbox_build_cmd(adapter
, scp
, &if_busy
);
1541 if (!scb
) { // command already completed
1546 megaraid_mbox_runpendq(adapter
, scb
);
1551 * megaraid_mbox_build_cmd - transform the mid-layer scsi command to megaraid
1553 * @adapter - controller's soft state
1554 * @scp - mid-layer scsi command pointer
1555 * @busy - set if request could not be completed because of lack of
1558 * convert the command issued by mid-layer to format understood by megaraid
1559 * firmware. We also complete certain command without sending them to firmware
1562 megaraid_mbox_build_cmd(adapter_t
*adapter
, struct scsi_cmnd
*scp
, int *busy
)
1564 mraid_device_t
*rdev
= ADAP2RAIDDEV(adapter
);
1569 mraid_passthru_t
*pthru
;
1573 char skip
[] = "skipping";
1574 char scan
[] = "scanning";
1579 * Get the appropriate device map for the device this command is
1582 MRAID_GET_DEVICE_MAP(adapter
, scp
, channel
, target
, islogical
);
1585 * Logical drive commands
1588 switch (scp
->cmnd
[0]) {
1589 case TEST_UNIT_READY
:
1591 * Do we support clustering and is the support enabled
1592 * If no, return success always
1595 scp
->result
= (DID_OK
<< 16);
1599 if (!(scb
= megaraid_alloc_scb(adapter
, scp
))) {
1600 scp
->result
= (DID_ERROR
<< 16);
1605 scb
->dma_direction
= scp
->sc_data_direction
;
1606 scb
->dev_channel
= 0xFF;
1607 scb
->dev_target
= target
;
1608 ccb
= (mbox_ccb_t
*)scb
->ccb
;
1611 * The command id will be provided by the command
1614 ccb
->raw_mbox
[0] = CLUSTER_CMD
;
1615 ccb
->raw_mbox
[2] = RESERVATION_STATUS
;
1616 ccb
->raw_mbox
[3] = target
;
1622 struct scatterlist
*sgl
;
1625 sgl
= (struct scatterlist
*)scp
->request_buffer
;
1628 (page_address((&sgl
[0])->page
)
1629 + (&sgl
[0])->offset
);
1631 memset(vaddr
, 0, scp
->cmnd
[4]);
1634 con_log(CL_ANN
, (KERN_WARNING
1635 "megaraid mailbox: invalid sg:%d\n",
1640 memset(scp
->request_buffer
, 0, scp
->cmnd
[4]);
1642 scp
->result
= (DID_OK
<< 16);
1647 * Display the channel scan for logical drives
1648 * Do not display scan for a channel if already done.
1650 if (!(rdev
->last_disp
& (1L << SCP2CHANNEL(scp
)))) {
1652 con_log(CL_ANN
, (KERN_INFO
1653 "scsi[%d]: scanning scsi channel %d",
1654 adapter
->host
->host_no
,
1658 " [virtual] for logical drives\n"));
1660 rdev
->last_disp
|= (1L << SCP2CHANNEL(scp
));
1663 if (scp
->cmnd
[1] & MEGA_SCSI_INQ_EVPD
) {
1664 scp
->sense_buffer
[0] = 0x70;
1665 scp
->sense_buffer
[2] = ILLEGAL_REQUEST
;
1666 scp
->sense_buffer
[12] = MEGA_INVALID_FIELD_IN_CDB
;
1667 scp
->result
= CHECK_CONDITION
<< 1;
1675 * Do not allow LUN > 0 for logical drives and
1676 * requests for more than 40 logical drives
1679 scp
->result
= (DID_BAD_TARGET
<< 16);
1682 if ((target
% 0x80) >= MAX_LOGICAL_DRIVES_40LD
) {
1683 scp
->result
= (DID_BAD_TARGET
<< 16);
1688 /* Allocate a SCB and initialize passthru */
1689 if (!(scb
= megaraid_alloc_scb(adapter
, scp
))) {
1690 scp
->result
= (DID_ERROR
<< 16);
1695 ccb
= (mbox_ccb_t
*)scb
->ccb
;
1696 scb
->dev_channel
= 0xFF;
1697 scb
->dev_target
= target
;
1700 mbox64
= ccb
->mbox64
;
1704 pthru
->reqsenselen
= 14;
1705 pthru
->islogical
= 1;
1706 pthru
->logdrv
= target
;
1707 pthru
->cdblen
= scp
->cmd_len
;
1708 memcpy(pthru
->cdb
, scp
->cmnd
, scp
->cmd_len
);
1710 mbox
->cmd
= MBOXCMD_PASSTHRU64
;
1711 scb
->dma_direction
= scp
->sc_data_direction
;
1713 pthru
->dataxferlen
= scp
->request_bufflen
;
1714 pthru
->dataxferaddr
= ccb
->sgl_dma_h
;
1715 pthru
->numsge
= megaraid_mbox_mksgl(adapter
,
1718 mbox
->xferaddr
= 0xFFFFFFFF;
1719 mbox64
->xferaddr_lo
= (uint32_t )ccb
->pthru_dma_h
;
1720 mbox64
->xferaddr_hi
= 0;
1732 * Allocate a SCB and initialize mailbox
1734 if (!(scb
= megaraid_alloc_scb(adapter
, scp
))) {
1735 scp
->result
= (DID_ERROR
<< 16);
1739 ccb
= (mbox_ccb_t
*)scb
->ccb
;
1740 scb
->dev_channel
= 0xFF;
1741 scb
->dev_target
= target
;
1743 mbox64
= ccb
->mbox64
;
1744 mbox
->logdrv
= target
;
1747 * A little HACK: 2nd bit is zero for all scsi read
1748 * commands and is set for all scsi write commands
1750 mbox
->cmd
= (scp
->cmnd
[0] & 0x02) ? MBOXCMD_LWRITE64
:
1754 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1756 if (scp
->cmd_len
== 6) {
1757 mbox
->numsectors
= (uint32_t)scp
->cmnd
[4];
1759 ((uint32_t)scp
->cmnd
[1] << 16) |
1760 ((uint32_t)scp
->cmnd
[2] << 8) |
1761 (uint32_t)scp
->cmnd
[3];
1763 mbox
->lba
&= 0x1FFFFF;
1767 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1769 else if (scp
->cmd_len
== 10) {
1771 (uint32_t)scp
->cmnd
[8] |
1772 ((uint32_t)scp
->cmnd
[7] << 8);
1774 ((uint32_t)scp
->cmnd
[2] << 24) |
1775 ((uint32_t)scp
->cmnd
[3] << 16) |
1776 ((uint32_t)scp
->cmnd
[4] << 8) |
1777 (uint32_t)scp
->cmnd
[5];
1781 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1783 else if (scp
->cmd_len
== 12) {
1785 ((uint32_t)scp
->cmnd
[2] << 24) |
1786 ((uint32_t)scp
->cmnd
[3] << 16) |
1787 ((uint32_t)scp
->cmnd
[4] << 8) |
1788 (uint32_t)scp
->cmnd
[5];
1791 ((uint32_t)scp
->cmnd
[6] << 24) |
1792 ((uint32_t)scp
->cmnd
[7] << 16) |
1793 ((uint32_t)scp
->cmnd
[8] << 8) |
1794 (uint32_t)scp
->cmnd
[9];
1797 con_log(CL_ANN
, (KERN_WARNING
1798 "megaraid: unsupported CDB length\n"));
1800 megaraid_dealloc_scb(adapter
, scb
);
1802 scp
->result
= (DID_ERROR
<< 16);
1806 scb
->dma_direction
= scp
->sc_data_direction
;
1808 // Calculate Scatter-Gather info
1809 mbox64
->xferaddr_lo
= (uint32_t )ccb
->sgl_dma_h
;
1810 mbox
->numsge
= megaraid_mbox_mksgl(adapter
,
1812 mbox
->xferaddr
= 0xFFFFFFFF;
1813 mbox64
->xferaddr_hi
= 0;
1820 * Do we support clustering and is the support enabled
1823 scp
->result
= (DID_BAD_TARGET
<< 16);
1828 * Allocate a SCB and initialize mailbox
1830 if (!(scb
= megaraid_alloc_scb(adapter
, scp
))) {
1831 scp
->result
= (DID_ERROR
<< 16);
1836 ccb
= (mbox_ccb_t
*)scb
->ccb
;
1837 scb
->dev_channel
= 0xFF;
1838 scb
->dev_target
= target
;
1839 ccb
->raw_mbox
[0] = CLUSTER_CMD
;
1840 ccb
->raw_mbox
[2] = (scp
->cmnd
[0] == RESERVE
) ?
1841 RESERVE_LD
: RELEASE_LD
;
1843 ccb
->raw_mbox
[3] = target
;
1844 scb
->dma_direction
= scp
->sc_data_direction
;
1849 scp
->result
= (DID_BAD_TARGET
<< 16);
1853 else { // Passthru device commands
1855 // Do not allow access to target id > 15 or LUN > 7
1856 if (target
> 15 || SCP2LUN(scp
) > 7) {
1857 scp
->result
= (DID_BAD_TARGET
<< 16);
1861 // if fast load option was set and scan for last device is
1862 // over, reset the fast_load flag so that during a possible
1863 // next scan, devices can be made available
1864 if (rdev
->fast_load
&& (target
== 15) &&
1865 (SCP2CHANNEL(scp
) == adapter
->max_channel
-1)) {
1867 con_log(CL_ANN
, (KERN_INFO
1868 "megaraid[%d]: physical device scan re-enabled\n",
1869 adapter
->host
->host_no
));
1870 rdev
->fast_load
= 0;
1874 * Display the channel scan for physical devices
1876 if (!(rdev
->last_disp
& (1L << SCP2CHANNEL(scp
)))) {
1878 ss
= rdev
->fast_load
? skip
: scan
;
1880 con_log(CL_ANN
, (KERN_INFO
1881 "scsi[%d]: %s scsi channel %d [Phy %d]",
1882 adapter
->host
->host_no
, ss
, SCP2CHANNEL(scp
),
1886 " for non-raid devices\n"));
1888 rdev
->last_disp
|= (1L << SCP2CHANNEL(scp
));
1891 // disable channel sweep if fast load option given
1892 if (rdev
->fast_load
) {
1893 scp
->result
= (DID_BAD_TARGET
<< 16);
1897 // Allocate a SCB and initialize passthru
1898 if (!(scb
= megaraid_alloc_scb(adapter
, scp
))) {
1899 scp
->result
= (DID_ERROR
<< 16);
1904 ccb
= (mbox_ccb_t
*)scb
->ccb
;
1905 scb
->dev_channel
= channel
;
1906 scb
->dev_target
= target
;
1907 scb
->dma_direction
= scp
->sc_data_direction
;
1909 mbox64
= ccb
->mbox64
;
1911 // Does this firmware support extended CDBs
1912 if (adapter
->max_cdb_sz
== 16) {
1913 mbox
->cmd
= MBOXCMD_EXTPTHRU
;
1915 megaraid_mbox_prepare_epthru(adapter
, scb
, scp
);
1917 mbox64
->xferaddr_lo
= (uint32_t)ccb
->epthru_dma_h
;
1918 mbox64
->xferaddr_hi
= 0;
1919 mbox
->xferaddr
= 0xFFFFFFFF;
1922 mbox
->cmd
= MBOXCMD_PASSTHRU64
;
1924 megaraid_mbox_prepare_pthru(adapter
, scb
, scp
);
1926 mbox64
->xferaddr_lo
= (uint32_t)ccb
->pthru_dma_h
;
1927 mbox64
->xferaddr_hi
= 0;
1928 mbox
->xferaddr
= 0xFFFFFFFF;
1938 * megaraid_mbox_runpendq - execute commands queued in the pending queue
1939 * @adapter : controller's soft state
1940 * @scb : SCB to be queued in the pending list
1942 * scan the pending list for commands which are not yet issued and try to
1943 * post to the controller. The SCB can be a null pointer, which would indicate
1944 * no SCB to be queue, just try to execute the ones in the pending list.
1946 * NOTE: We do not actually traverse the pending list. The SCBs are plucked
1947 * out from the head of the pending list. If it is successfully issued, the
1948 * next SCB is at the head now.
1951 megaraid_mbox_runpendq(adapter_t
*adapter
, scb_t
*scb_q
)
1954 unsigned long flags
;
1956 spin_lock_irqsave(PENDING_LIST_LOCK(adapter
), flags
);
1959 scb_q
->state
= SCB_PENDQ
;
1960 list_add_tail(&scb_q
->list
, &adapter
->pend_list
);
1963 // if the adapter in not in quiescent mode, post the commands to FW
1964 if (adapter
->quiescent
) {
1965 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter
), flags
);
1969 while (!list_empty(&adapter
->pend_list
)) {
1971 assert_spin_locked(PENDING_LIST_LOCK(adapter
));
1973 scb
= list_entry(adapter
->pend_list
.next
, scb_t
, list
);
1975 // remove the scb from the pending list and try to
1976 // issue. If we are unable to issue it, put back in
1977 // the pending list and return
1979 list_del_init(&scb
->list
);
1981 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter
), flags
);
1983 // if mailbox was busy, return SCB back to pending
1984 // list. Make sure to add at the head, since that's
1985 // where it would have been removed from
1987 scb
->state
= SCB_ISSUED
;
1989 if (mbox_post_cmd(adapter
, scb
) != 0) {
1991 spin_lock_irqsave(PENDING_LIST_LOCK(adapter
), flags
);
1993 scb
->state
= SCB_PENDQ
;
1995 list_add(&scb
->list
, &adapter
->pend_list
);
1997 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter
),
2003 spin_lock_irqsave(PENDING_LIST_LOCK(adapter
), flags
);
2006 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter
), flags
);
2014 * megaraid_mbox_prepare_pthru - prepare a command for physical devices
2015 * @adapter - pointer to controller's soft state
2016 * @scb - scsi control block
2017 * @scp - scsi command from the mid-layer
2019 * prepare a command for the scsi physical devices
2022 megaraid_mbox_prepare_pthru(adapter_t
*adapter
, scb_t
*scb
,
2023 struct scsi_cmnd
*scp
)
2026 mraid_passthru_t
*pthru
;
2030 ccb
= (mbox_ccb_t
*)scb
->ccb
;
2032 channel
= scb
->dev_channel
;
2033 target
= scb
->dev_target
;
2035 // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout
2038 pthru
->islogical
= 0;
2040 pthru
->target
= (channel
<< 4) | target
;
2041 pthru
->logdrv
= SCP2LUN(scp
);
2042 pthru
->reqsenselen
= 14;
2043 pthru
->cdblen
= scp
->cmd_len
;
2045 memcpy(pthru
->cdb
, scp
->cmnd
, scp
->cmd_len
);
2047 if (scp
->request_bufflen
) {
2048 pthru
->dataxferlen
= scp
->request_bufflen
;
2049 pthru
->dataxferaddr
= ccb
->sgl_dma_h
;
2050 pthru
->numsge
= megaraid_mbox_mksgl(adapter
, scb
);
2053 pthru
->dataxferaddr
= 0;
2054 pthru
->dataxferlen
= 0;
2062 * megaraid_mbox_prepare_epthru - prepare a command for physical devices
2063 * @adapter - pointer to controller's soft state
2064 * @scb - scsi control block
2065 * @scp - scsi command from the mid-layer
2067 * prepare a command for the scsi physical devices. This rountine prepares
2068 * commands for devices which can take extended CDBs (>10 bytes)
2071 megaraid_mbox_prepare_epthru(adapter_t
*adapter
, scb_t
*scb
,
2072 struct scsi_cmnd
*scp
)
2075 mraid_epassthru_t
*epthru
;
2079 ccb
= (mbox_ccb_t
*)scb
->ccb
;
2080 epthru
= ccb
->epthru
;
2081 channel
= scb
->dev_channel
;
2082 target
= scb
->dev_target
;
2084 // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout
2085 epthru
->timeout
= 4;
2087 epthru
->islogical
= 0;
2088 epthru
->channel
= 0;
2089 epthru
->target
= (channel
<< 4) | target
;
2090 epthru
->logdrv
= SCP2LUN(scp
);
2091 epthru
->reqsenselen
= 14;
2092 epthru
->cdblen
= scp
->cmd_len
;
2094 memcpy(epthru
->cdb
, scp
->cmnd
, scp
->cmd_len
);
2096 if (scp
->request_bufflen
) {
2097 epthru
->dataxferlen
= scp
->request_bufflen
;
2098 epthru
->dataxferaddr
= ccb
->sgl_dma_h
;
2099 epthru
->numsge
= megaraid_mbox_mksgl(adapter
, scb
);
2102 epthru
->dataxferaddr
= 0;
2103 epthru
->dataxferlen
= 0;
2111 * megaraid_ack_sequence - interrupt ack sequence for memory mapped HBAs
2112 * @adapter - controller's soft state
2114 * Interrupt ackrowledgement sequence for memory mapped HBAs. Find out the
2115 * completed command and put them on the completed list for later processing.
2117 * Returns: 1 if the interrupt is valid, 0 otherwise
2120 megaraid_ack_sequence(adapter_t
*adapter
)
2122 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
2126 uint8_t completed
[MBOX_MAX_FIRMWARE_STATUS
];
2127 struct list_head clist
;
2130 unsigned long flags
;
2134 mbox
= raid_dev
->mbox
;
2136 // move the SCBs from the firmware completed array to our local list
2137 INIT_LIST_HEAD(&clist
);
2139 // loop till F/W has more commands for us to complete
2141 spin_lock_irqsave(MAILBOX_LOCK(raid_dev
), flags
);
2144 * Check if a valid interrupt is pending. If found, force the
2145 * interrupt line low.
2147 dword
= RDOUTDOOR(raid_dev
);
2148 if (dword
!= 0x10001234) break;
2152 WROUTDOOR(raid_dev
, 0x10001234);
2155 // wait for valid numstatus to post
2156 for (i
= 0; i
< 0xFFFFF; i
++) {
2157 if (mbox
->numstatus
!= 0xFF) {
2158 nstatus
= mbox
->numstatus
;
2163 mbox
->numstatus
= 0xFF;
2165 adapter
->outstanding_cmds
-= nstatus
;
2167 for (i
= 0; i
< nstatus
; i
++) {
2169 // wait for valid command index to post
2170 for (j
= 0; j
< 0xFFFFF; j
++) {
2171 if (mbox
->completed
[i
] != 0xFF) break;
2174 completed
[i
] = mbox
->completed
[i
];
2175 mbox
->completed
[i
] = 0xFF;
2177 if (completed
[i
] == 0xFF) {
2178 con_log(CL_ANN
, (KERN_CRIT
2179 "megaraid: command posting timed out\n"));
2185 // Get SCB associated with this command id
2186 if (completed
[i
] >= MBOX_MAX_SCSI_CMDS
) {
2188 scb
= adapter
->uscb_list
+ (completed
[i
] -
2189 MBOX_MAX_SCSI_CMDS
);
2193 scb
= adapter
->kscb_list
+ completed
[i
];
2196 scb
->status
= mbox
->status
;
2197 list_add_tail(&scb
->list
, &clist
);
2200 // Acknowledge interrupt
2201 WRINDOOR(raid_dev
, 0x02);
2205 spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev
), flags
);
2208 // put the completed commands in the completed list. DPC would
2209 // complete these commands later
2210 spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter
), flags
);
2212 list_splice(&clist
, &adapter
->completed_list
);
2214 spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter
), flags
);
2217 // schedule the DPC if there is some work for it
2219 tasklet_schedule(&adapter
->dpc_h
);
2226 * megaraid_isr - isr for memory based mailbox based controllers
2228 * @devp - pointer to our soft state
2231 * Interrupt service routine for memory-mapped mailbox controllers.
2234 megaraid_isr(int irq
, void *devp
)
2236 adapter_t
*adapter
= devp
;
2239 handled
= megaraid_ack_sequence(adapter
);
2241 /* Loop through any pending requests */
2242 if (!adapter
->quiescent
) {
2243 megaraid_mbox_runpendq(adapter
, NULL
);
2246 return IRQ_RETVAL(handled
);
2251 * megaraid_mbox_sync_scb - sync kernel buffers
2252 * @adapter : controller's soft state
2253 * @scb : pointer to the resource packet
2255 * DMA sync if required.
2258 megaraid_mbox_sync_scb(adapter_t
*adapter
, scb_t
*scb
)
2262 ccb
= (mbox_ccb_t
*)scb
->ccb
;
2264 switch (scb
->dma_type
) {
2266 case MRAID_DMA_WBUF
:
2267 if (scb
->dma_direction
== PCI_DMA_FROMDEVICE
) {
2268 pci_dma_sync_single_for_cpu(adapter
->pdev
,
2270 scb
->scp
->request_bufflen
,
2271 PCI_DMA_FROMDEVICE
);
2274 pci_unmap_page(adapter
->pdev
, ccb
->buf_dma_h
,
2275 scb
->scp
->request_bufflen
, scb
->dma_direction
);
2280 if (scb
->dma_direction
== PCI_DMA_FROMDEVICE
) {
2281 pci_dma_sync_sg_for_cpu(adapter
->pdev
,
2282 scb
->scp
->request_buffer
,
2283 scb
->scp
->use_sg
, PCI_DMA_FROMDEVICE
);
2286 pci_unmap_sg(adapter
->pdev
, scb
->scp
->request_buffer
,
2287 scb
->scp
->use_sg
, scb
->dma_direction
);
2300 * megaraid_mbox_dpc - the tasklet to complete the commands from completed list
2301 * @devp : pointer to HBA soft state
2303 * Pick up the commands from the completed list and send back to the owners.
2304 * This is a reentrant function and does not assume any locks are held while
2305 * it is being called.
2308 megaraid_mbox_dpc(unsigned long devp
)
2310 adapter_t
*adapter
= (adapter_t
*)devp
;
2311 mraid_device_t
*raid_dev
;
2312 struct list_head clist
;
2313 struct scatterlist
*sgl
;
2316 struct scsi_cmnd
*scp
;
2317 mraid_passthru_t
*pthru
;
2318 mraid_epassthru_t
*epthru
;
2324 unsigned long flags
;
2330 if (!adapter
) return;
2332 raid_dev
= ADAP2RAIDDEV(adapter
);
2334 // move the SCBs from the completed list to our local list
2335 INIT_LIST_HEAD(&clist
);
2337 spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter
), flags
);
2339 list_splice_init(&adapter
->completed_list
, &clist
);
2341 spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter
), flags
);
2344 list_for_each_entry_safe(scb
, tmp
, &clist
, list
) {
2346 status
= scb
->status
;
2348 ccb
= (mbox_ccb_t
*)scb
->ccb
;
2350 epthru
= ccb
->epthru
;
2353 // Make sure f/w has completed a valid command
2354 if (scb
->state
!= SCB_ISSUED
) {
2355 con_log(CL_ANN
, (KERN_CRIT
2356 "megaraid critical err: invalid command %d:%d:%p\n",
2357 scb
->sno
, scb
->state
, scp
));
2359 continue; // Must never happen!
2362 // check for the management command and complete it right away
2363 if (scb
->sno
>= MBOX_MAX_SCSI_CMDS
) {
2364 scb
->state
= SCB_FREE
;
2365 scb
->status
= status
;
2367 // remove from local clist
2368 list_del_init(&scb
->list
);
2370 kioc
= (uioc_t
*)scb
->gp
;
2373 megaraid_mbox_mm_done(adapter
, scb
);
2378 // Was an abort issued for this command earlier
2379 if (scb
->state
& SCB_ABORT
) {
2380 con_log(CL_ANN
, (KERN_NOTICE
2381 "megaraid: aborted cmd %lx[%x] completed\n",
2382 scp
->serial_number
, scb
->sno
));
2386 * If the inquiry came of a disk drive which is not part of
2387 * any RAID array, expose it to the kernel. For this to be
2388 * enabled, user must set the "megaraid_expose_unconf_disks"
2389 * flag to 1 by specifying it on module parameter list.
2390 * This would enable data migration off drives from other
2393 islogical
= MRAID_IS_LOGICAL(adapter
, scp
);
2394 if (scp
->cmnd
[0] == INQUIRY
&& status
== 0 && islogical
== 0
2395 && IS_RAID_CH(raid_dev
, scb
->dev_channel
)) {
2398 sgl
= (struct scatterlist
*)
2399 scp
->request_buffer
;
2402 c
= *(unsigned char *)
2403 (page_address((&sgl
[0])->page
) +
2407 con_log(CL_ANN
, (KERN_WARNING
2408 "megaraid mailbox: invalid sg:%d\n",
2414 c
= *(uint8_t *)scp
->request_buffer
;
2417 if ((c
& 0x1F ) == TYPE_DISK
) {
2418 pdev_index
= (scb
->dev_channel
* 16) +
2421 raid_dev
->pdrv_state
[pdev_index
] & 0x0F;
2423 if (pdev_state
== PDRV_ONLINE
||
2424 pdev_state
== PDRV_FAILED
||
2425 pdev_state
== PDRV_RBLD
||
2426 pdev_state
== PDRV_HOTSPARE
||
2427 megaraid_expose_unconf_disks
== 0) {
2434 // Convert MegaRAID status to Linux error code
2439 scp
->result
= (DID_OK
<< 16);
2444 /* set sense_buffer and result fields */
2445 if (mbox
->cmd
== MBOXCMD_PASSTHRU
||
2446 mbox
->cmd
== MBOXCMD_PASSTHRU64
) {
2448 memcpy(scp
->sense_buffer
, pthru
->reqsensearea
,
2451 scp
->result
= DRIVER_SENSE
<< 24 |
2452 DID_OK
<< 16 | CHECK_CONDITION
<< 1;
2455 if (mbox
->cmd
== MBOXCMD_EXTPTHRU
) {
2457 memcpy(scp
->sense_buffer
,
2458 epthru
->reqsensearea
, 14);
2460 scp
->result
= DRIVER_SENSE
<< 24 |
2462 CHECK_CONDITION
<< 1;
2464 scp
->sense_buffer
[0] = 0x70;
2465 scp
->sense_buffer
[2] = ABORTED_COMMAND
;
2466 scp
->result
= CHECK_CONDITION
<< 1;
2473 scp
->result
= DID_BUS_BUSY
<< 16 | status
;
2479 * If TEST_UNIT_READY fails, we know RESERVATION_STATUS
2482 if (scp
->cmnd
[0] == TEST_UNIT_READY
) {
2483 scp
->result
= DID_ERROR
<< 16 |
2484 RESERVATION_CONFLICT
<< 1;
2488 * Error code returned is 1 if Reserve or Release
2489 * failed or the input parameter is invalid
2491 if (status
== 1 && (scp
->cmnd
[0] == RESERVE
||
2492 scp
->cmnd
[0] == RELEASE
)) {
2494 scp
->result
= DID_ERROR
<< 16 |
2495 RESERVATION_CONFLICT
<< 1;
2498 scp
->result
= DID_BAD_TARGET
<< 16 | status
;
2502 // print a debug message for all failed commands
2504 megaraid_mbox_display_scb(adapter
, scb
);
2507 // Free our internal resources and call the mid-layer callback
2509 megaraid_mbox_sync_scb(adapter
, scb
);
2511 // remove from local clist
2512 list_del_init(&scb
->list
);
2514 // put back in free list
2515 megaraid_dealloc_scb(adapter
, scb
);
2517 // send the scsi packet back to kernel
2518 scp
->scsi_done(scp
);
2526 * megaraid_abort_handler - abort the scsi command
2527 * @scp : command to be aborted
2529 * Abort a previous SCSI request. Only commands on the pending list can be
2530 * aborted. All the commands issued to the F/W must complete.
2533 megaraid_abort_handler(struct scsi_cmnd
*scp
)
2536 mraid_device_t
*raid_dev
;
2540 unsigned long flags
;
2544 adapter
= SCP2ADAPTER(scp
);
2545 raid_dev
= ADAP2RAIDDEV(adapter
);
2547 con_log(CL_ANN
, (KERN_WARNING
2548 "megaraid: aborting-%ld cmd=%x <c=%d t=%d l=%d>\n",
2549 scp
->serial_number
, scp
->cmnd
[0], SCP2CHANNEL(scp
),
2550 SCP2TARGET(scp
), SCP2LUN(scp
)));
2552 // If FW has stopped responding, simply return failure
2553 if (raid_dev
->hw_error
) {
2554 con_log(CL_ANN
, (KERN_NOTICE
2555 "megaraid: hw error, not aborting\n"));
2559 // There might a race here, where the command was completed by the
2560 // firmware and now it is on the completed list. Before we could
2561 // complete the command to the kernel in dpc, the abort came.
2562 // Find out if this is the case to avoid the race.
2564 spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter
), flags
);
2565 list_for_each_entry_safe(scb
, tmp
, &adapter
->completed_list
, list
) {
2567 if (scb
->scp
== scp
) { // Found command
2569 list_del_init(&scb
->list
); // from completed list
2571 con_log(CL_ANN
, (KERN_WARNING
2572 "megaraid: %ld:%d[%d:%d], abort from completed list\n",
2573 scp
->serial_number
, scb
->sno
,
2574 scb
->dev_channel
, scb
->dev_target
));
2576 scp
->result
= (DID_ABORT
<< 16);
2577 scp
->scsi_done(scp
);
2579 megaraid_dealloc_scb(adapter
, scb
);
2581 spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter
),
2587 spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter
), flags
);
2590 // Find out if this command is still on the pending list. If it is and
2591 // was never issued, abort and return success. If the command is owned
2592 // by the firmware, we must wait for it to complete by the FW.
2593 spin_lock_irqsave(PENDING_LIST_LOCK(adapter
), flags
);
2594 list_for_each_entry_safe(scb
, tmp
, &adapter
->pend_list
, list
) {
2596 if (scb
->scp
== scp
) { // Found command
2598 list_del_init(&scb
->list
); // from pending list
2600 ASSERT(!(scb
->state
& SCB_ISSUED
));
2602 con_log(CL_ANN
, (KERN_WARNING
2603 "megaraid abort: %ld[%d:%d], driver owner\n",
2604 scp
->serial_number
, scb
->dev_channel
,
2607 scp
->result
= (DID_ABORT
<< 16);
2608 scp
->scsi_done(scp
);
2610 megaraid_dealloc_scb(adapter
, scb
);
2612 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter
),
2618 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter
), flags
);
2621 // Check do we even own this command, in which case this would be
2622 // owned by the firmware. The only way to locate the FW scb is to
2623 // traverse through the list of all SCB, since driver does not
2624 // maintain these SCBs on any list
2626 spin_lock_irq(&adapter
->lock
);
2627 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
; i
++) {
2628 scb
= adapter
->kscb_list
+ i
;
2630 if (scb
->scp
== scp
) {
2634 if (!(scb
->state
& SCB_ISSUED
)) {
2635 con_log(CL_ANN
, (KERN_WARNING
2636 "megaraid abort: %ld%d[%d:%d], invalid state\n",
2637 scp
->serial_number
, scb
->sno
, scb
->dev_channel
,
2642 con_log(CL_ANN
, (KERN_WARNING
2643 "megaraid abort: %ld:%d[%d:%d], fw owner\n",
2644 scp
->serial_number
, scb
->sno
, scb
->dev_channel
,
2649 spin_unlock_irq(&adapter
->lock
);
2652 con_log(CL_ANN
, (KERN_WARNING
2653 "megaraid abort: scsi cmd:%ld, do now own\n",
2654 scp
->serial_number
));
2656 // FIXME: Should there be a callback for this command?
2660 // We cannot actually abort a command owned by firmware, return
2661 // failure and wait for reset. In host reset handler, we will find out
2662 // if the HBA is still live
2667 * megaraid_reset_handler - device reset hadler for mailbox based driver
2668 * @scp : reference command
2670 * Reset handler for the mailbox based controller. First try to find out if
2671 * the FW is still live, in which case the outstanding commands counter mut go
2672 * down to 0. If that happens, also issue the reservation reset command to
2673 * relinquish (possible) reservations on the logical drives connected to this
2677 megaraid_reset_handler(struct scsi_cmnd
*scp
)
2682 mraid_device_t
*raid_dev
;
2683 unsigned long flags
;
2684 uint8_t raw_mbox
[sizeof(mbox_t
)];
2686 int recovery_window
;
2691 adapter
= SCP2ADAPTER(scp
);
2692 raid_dev
= ADAP2RAIDDEV(adapter
);
2694 // return failure if adapter is not responding
2695 if (raid_dev
->hw_error
) {
2696 con_log(CL_ANN
, (KERN_NOTICE
2697 "megaraid: hw error, cannot reset\n"));
2702 // Under exceptional conditions, FW can take up to 3 minutes to
2703 // complete command processing. Wait for additional 2 minutes for the
2704 // pending commands counter to go down to 0. If it doesn't, let the
2705 // controller be marked offline
2706 // Also, reset all the commands currently owned by the driver
2707 spin_lock_irqsave(PENDING_LIST_LOCK(adapter
), flags
);
2708 list_for_each_entry_safe(scb
, tmp
, &adapter
->pend_list
, list
) {
2709 list_del_init(&scb
->list
); // from pending list
2711 if (scb
->sno
>= MBOX_MAX_SCSI_CMDS
) {
2712 con_log(CL_ANN
, (KERN_WARNING
2713 "megaraid: IOCTL packet with %d[%d:%d] being reset\n",
2714 scb
->sno
, scb
->dev_channel
, scb
->dev_target
));
2718 kioc
= (uioc_t
*)scb
->gp
;
2719 kioc
->status
= -EFAULT
;
2721 megaraid_mbox_mm_done(adapter
, scb
);
2723 if (scb
->scp
== scp
) { // Found command
2724 con_log(CL_ANN
, (KERN_WARNING
2725 "megaraid: %ld:%d[%d:%d], reset from pending list\n",
2726 scp
->serial_number
, scb
->sno
,
2727 scb
->dev_channel
, scb
->dev_target
));
2729 con_log(CL_ANN
, (KERN_WARNING
2730 "megaraid: IO packet with %d[%d:%d] being reset\n",
2731 scb
->sno
, scb
->dev_channel
, scb
->dev_target
));
2734 scb
->scp
->result
= (DID_RESET
<< 16);
2735 scb
->scp
->scsi_done(scb
->scp
);
2737 megaraid_dealloc_scb(adapter
, scb
);
2740 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter
), flags
);
2742 if (adapter
->outstanding_cmds
) {
2743 con_log(CL_ANN
, (KERN_NOTICE
2744 "megaraid: %d outstanding commands. Max wait %d sec\n",
2745 adapter
->outstanding_cmds
,
2746 (MBOX_RESET_WAIT
+ MBOX_RESET_EXT_WAIT
)));
2749 recovery_window
= MBOX_RESET_WAIT
+ MBOX_RESET_EXT_WAIT
;
2751 recovering
= adapter
->outstanding_cmds
;
2753 for (i
= 0; i
< recovery_window
; i
++) {
2755 megaraid_ack_sequence(adapter
);
2757 // print a message once every 5 seconds only
2760 "megaraid mbox: Wait for %d commands to complete:%d\n",
2761 adapter
->outstanding_cmds
,
2762 (MBOX_RESET_WAIT
+ MBOX_RESET_EXT_WAIT
) - i
));
2765 // bailout if no recovery happended in reset time
2766 if (adapter
->outstanding_cmds
== 0) {
2773 spin_lock(&adapter
->lock
);
2775 // If still outstanding commands, bail out
2776 if (adapter
->outstanding_cmds
) {
2777 con_log(CL_ANN
, (KERN_WARNING
2778 "megaraid mbox: critical hardware error!\n"));
2780 raid_dev
->hw_error
= 1;
2786 con_log(CL_ANN
, (KERN_NOTICE
2787 "megaraid mbox: reset sequence completed sucessfully\n"));
2791 // If the controller supports clustering, reset reservations
2797 // clear reservations if any
2798 raw_mbox
[0] = CLUSTER_CMD
;
2799 raw_mbox
[2] = RESET_RESERVATIONS
;
2802 if (mbox_post_sync_cmd_fast(adapter
, raw_mbox
) == 0) {
2804 (KERN_INFO
"megaraid: reservation reset\n"));
2808 con_log(CL_ANN
, (KERN_WARNING
2809 "megaraid: reservation reset failed\n"));
2813 spin_unlock_irq(&adapter
->lock
);
2818 * START: internal commands library
2820 * This section of the driver has the common routine used by the driver and
2821 * also has all the FW routines
2825 * mbox_post_sync_cmd() - blocking command to the mailbox based controllers
2826 * @adapter - controller's soft state
2827 * @raw_mbox - the mailbox
2829 * Issue a scb in synchronous and non-interrupt mode for mailbox based
2833 mbox_post_sync_cmd(adapter_t
*adapter
, uint8_t raw_mbox
[])
2835 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
2842 mbox64
= raid_dev
->mbox64
;
2843 mbox
= raid_dev
->mbox
;
2846 * Wait until mailbox is free
2848 if (megaraid_busywait_mbox(raid_dev
) != 0)
2849 goto blocked_mailbox
;
2852 * Copy mailbox data into host structure
2854 memcpy((caddr_t
)mbox
, (caddr_t
)raw_mbox
, 16);
2859 mbox
->numstatus
= 0xFF;
2860 mbox
->status
= 0xFF;
2863 WRINDOOR(raid_dev
, raid_dev
->mbox_dma
| 0x1);
2865 // wait for maximum 1 second for status to post. If the status is not
2866 // available within 1 second, assume FW is initializing and wait
2867 // for an extended amount of time
2868 if (mbox
->numstatus
== 0xFF) { // status not yet available
2871 for (i
= 0; mbox
->numstatus
== 0xFF && i
< 1000; i
++) {
2878 con_log(CL_ANN
, (KERN_NOTICE
2879 "megaraid mailbox: wait for FW to boot "));
2881 for (i
= 0; (mbox
->numstatus
== 0xFF) &&
2882 (i
< MBOX_RESET_WAIT
); i
++) {
2884 con_log(CL_ANN
, ("\b\b\b\b\b[%03d]",
2885 MBOX_RESET_WAIT
- i
));
2889 if (i
== MBOX_RESET_WAIT
) {
2892 "\nmegaraid mailbox: status not available\n"));
2896 con_log(CL_ANN
, ("\b\b\b\b\b[ok] \n"));
2900 // wait for maximum 1 second for poll semaphore
2901 if (mbox
->poll
!= 0x77) {
2904 for (i
= 0; (mbox
->poll
!= 0x77) && (i
< 1000); i
++) {
2910 con_log(CL_ANN
, (KERN_WARNING
2911 "megaraid mailbox: could not get poll semaphore\n"));
2916 WRINDOOR(raid_dev
, raid_dev
->mbox_dma
| 0x2);
2919 // wait for maximum 1 second for acknowledgement
2920 if (RDINDOOR(raid_dev
) & 0x2) {
2923 for (i
= 0; (RDINDOOR(raid_dev
) & 0x2) && (i
< 1000); i
++) {
2929 con_log(CL_ANN
, (KERN_WARNING
2930 "megaraid mailbox: could not acknowledge\n"));
2937 status
= mbox
->status
;
2939 // invalidate the completed command id array. After command
2940 // completion, firmware would write the valid id.
2941 mbox
->numstatus
= 0xFF;
2942 mbox
->status
= 0xFF;
2943 for (i
= 0; i
< MBOX_MAX_FIRMWARE_STATUS
; i
++) {
2944 mbox
->completed
[i
] = 0xFF;
2951 con_log(CL_ANN
, (KERN_WARNING
"megaraid: blocked mailbox\n") );
2957 * mbox_post_sync_cmd_fast - blocking command to the mailbox based controllers
2958 * @adapter - controller's soft state
2959 * @raw_mbox - the mailbox
2961 * Issue a scb in synchronous and non-interrupt mode for mailbox based
2962 * controllers. This is a faster version of the synchronous command and
2963 * therefore can be called in interrupt-context as well
2966 mbox_post_sync_cmd_fast(adapter_t
*adapter
, uint8_t raw_mbox
[])
2968 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
2973 mbox
= raid_dev
->mbox
;
2975 // return immediately if the mailbox is busy
2976 if (mbox
->busy
) return -1;
2978 // Copy mailbox data into host structure
2979 memcpy((caddr_t
)mbox
, (caddr_t
)raw_mbox
, 14);
2984 mbox
->numstatus
= 0xFF;
2985 mbox
->status
= 0xFF;
2988 WRINDOOR(raid_dev
, raid_dev
->mbox_dma
| 0x1);
2990 for (i
= 0; i
< MBOX_SYNC_WAIT_CNT
; i
++) {
2991 if (mbox
->numstatus
!= 0xFF) break;
2993 udelay(MBOX_SYNC_DELAY_200
);
2996 if (i
== MBOX_SYNC_WAIT_CNT
) {
2997 // We may need to re-calibrate the counter
2998 con_log(CL_ANN
, (KERN_CRIT
2999 "megaraid: fast sync command timed out\n"));
3002 WRINDOOR(raid_dev
, raid_dev
->mbox_dma
| 0x2);
3005 return mbox
->status
;
3010 * megaraid_busywait_mbox() - Wait until the controller's mailbox is available
3011 * @raid_dev - RAID device (HBA) soft state
3013 * wait until the controller's mailbox is available to accept more commands.
3014 * wait for at most 1 second
3017 megaraid_busywait_mbox(mraid_device_t
*raid_dev
)
3019 mbox_t
*mbox
= raid_dev
->mbox
;
3024 for (i
= 0; mbox
->busy
&& i
< 1000; i
++)
3028 if (i
< 1000) return 0;
3034 * megaraid_mbox_product_info - some static information about the controller
3035 * @adapter - our soft state
3037 * issue commands to the controller to grab some parameters required by our
3041 megaraid_mbox_product_info(adapter_t
*adapter
)
3043 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
3045 uint8_t raw_mbox
[sizeof(mbox_t
)];
3046 mraid_pinfo_t
*pinfo
;
3047 dma_addr_t pinfo_dma_h
;
3048 mraid_inquiry3_t
*mraid_inq3
;
3052 memset((caddr_t
)raw_mbox
, 0, sizeof(raw_mbox
));
3053 mbox
= (mbox_t
*)raw_mbox
;
3056 * Issue an ENQUIRY3 command to find out certain adapter parameters,
3057 * e.g., max channels, max commands etc.
3059 pinfo
= pci_alloc_consistent(adapter
->pdev
, sizeof(mraid_pinfo_t
),
3062 if (pinfo
== NULL
) {
3063 con_log(CL_ANN
, (KERN_WARNING
3064 "megaraid: out of memory, %s %d\n", __FUNCTION__
,
3069 memset(pinfo
, 0, sizeof(mraid_pinfo_t
));
3071 mbox
->xferaddr
= (uint32_t)adapter
->ibuf_dma_h
;
3072 memset((void *)adapter
->ibuf
, 0, MBOX_IBUF_SIZE
);
3074 raw_mbox
[0] = FC_NEW_CONFIG
;
3075 raw_mbox
[2] = NC_SUBOP_ENQUIRY3
;
3076 raw_mbox
[3] = ENQ3_GET_SOLICITED_FULL
;
3078 // Issue the command
3079 if (mbox_post_sync_cmd(adapter
, raw_mbox
) != 0) {
3081 con_log(CL_ANN
, (KERN_WARNING
"megaraid: Inquiry3 failed\n"));
3083 pci_free_consistent(adapter
->pdev
, sizeof(mraid_pinfo_t
),
3084 pinfo
, pinfo_dma_h
);
3090 * Collect information about state of each physical drive
3091 * attached to the controller. We will expose all the disks
3092 * which are not part of RAID
3094 mraid_inq3
= (mraid_inquiry3_t
*)adapter
->ibuf
;
3095 for (i
= 0; i
< MBOX_MAX_PHYSICAL_DRIVES
; i
++) {
3096 raid_dev
->pdrv_state
[i
] = mraid_inq3
->pdrv_state
[i
];
3100 * Get product info for information like number of channels,
3101 * maximum commands supported.
3103 memset((caddr_t
)raw_mbox
, 0, sizeof(raw_mbox
));
3104 mbox
->xferaddr
= (uint32_t)pinfo_dma_h
;
3106 raw_mbox
[0] = FC_NEW_CONFIG
;
3107 raw_mbox
[2] = NC_SUBOP_PRODUCT_INFO
;
3109 if (mbox_post_sync_cmd(adapter
, raw_mbox
) != 0) {
3111 con_log(CL_ANN
, (KERN_WARNING
3112 "megaraid: product info failed\n"));
3114 pci_free_consistent(adapter
->pdev
, sizeof(mraid_pinfo_t
),
3115 pinfo
, pinfo_dma_h
);
3121 * Setup some parameters for host, as required by our caller
3123 adapter
->max_channel
= pinfo
->nchannels
;
3126 * we will export all the logical drives on a single channel.
3127 * Add 1 since inquires do not come for inititor ID
3129 adapter
->max_target
= MAX_LOGICAL_DRIVES_40LD
+ 1;
3130 adapter
->max_lun
= 8; // up to 8 LUNs for non-disk devices
3133 * These are the maximum outstanding commands for the scsi-layer
3135 adapter
->max_cmds
= MBOX_MAX_SCSI_CMDS
;
3137 memset(adapter
->fw_version
, 0, VERSION_SIZE
);
3138 memset(adapter
->bios_version
, 0, VERSION_SIZE
);
3140 memcpy(adapter
->fw_version
, pinfo
->fw_version
, 4);
3141 adapter
->fw_version
[4] = 0;
3143 memcpy(adapter
->bios_version
, pinfo
->bios_version
, 4);
3144 adapter
->bios_version
[4] = 0;
3146 con_log(CL_ANN
, (KERN_NOTICE
3147 "megaraid: fw version:[%s] bios version:[%s]\n",
3148 adapter
->fw_version
, adapter
->bios_version
));
3150 pci_free_consistent(adapter
->pdev
, sizeof(mraid_pinfo_t
), pinfo
,
3159 * megaraid_mbox_extended_cdb - check for support for extended CDBs
3160 * @adapter - soft state for the controller
3162 * this routine check whether the controller in question supports extended
3163 * ( > 10 bytes ) CDBs
3166 megaraid_mbox_extended_cdb(adapter_t
*adapter
)
3169 uint8_t raw_mbox
[sizeof(mbox_t
)];
3172 mbox
= (mbox_t
*)raw_mbox
;
3174 memset((caddr_t
)raw_mbox
, 0, sizeof(raw_mbox
));
3175 mbox
->xferaddr
= (uint32_t)adapter
->ibuf_dma_h
;
3177 memset((void *)adapter
->ibuf
, 0, MBOX_IBUF_SIZE
);
3179 raw_mbox
[0] = MAIN_MISC_OPCODE
;
3180 raw_mbox
[2] = SUPPORT_EXT_CDB
;
3186 if (mbox_post_sync_cmd(adapter
, raw_mbox
) != 0) {
3195 * megaraid_mbox_support_ha - Do we support clustering
3196 * @adapter - soft state for the controller
3197 * @init_id - ID of the initiator
3199 * Determine if the firmware supports clustering and the ID of the initiator.
3202 megaraid_mbox_support_ha(adapter_t
*adapter
, uint16_t *init_id
)
3205 uint8_t raw_mbox
[sizeof(mbox_t
)];
3209 mbox
= (mbox_t
*)raw_mbox
;
3211 memset((caddr_t
)raw_mbox
, 0, sizeof(raw_mbox
));
3213 mbox
->xferaddr
= (uint32_t)adapter
->ibuf_dma_h
;
3215 memset((void *)adapter
->ibuf
, 0, MBOX_IBUF_SIZE
);
3217 raw_mbox
[0] = GET_TARGET_ID
;
3219 // Issue the command
3222 if (mbox_post_sync_cmd(adapter
, raw_mbox
) == 0) {
3224 *init_id
= *(uint8_t *)adapter
->ibuf
;
3226 con_log(CL_ANN
, (KERN_INFO
3227 "megaraid: cluster firmware, initiator ID: %d\n",
3238 * megaraid_mbox_support_random_del - Do we support random deletion
3239 * @adapter - soft state for the controller
3241 * Determine if the firmware supports random deletion
3242 * Return: 1 is operation supported, 0 otherwise
3245 megaraid_mbox_support_random_del(adapter_t
*adapter
)
3248 uint8_t raw_mbox
[sizeof(mbox_t
)];
3252 mbox
= (mbox_t
*)raw_mbox
;
3254 memset((caddr_t
)raw_mbox
, 0, sizeof(mbox_t
));
3256 raw_mbox
[0] = FC_DEL_LOGDRV
;
3257 raw_mbox
[2] = OP_SUP_DEL_LOGDRV
;
3259 // Issue the command
3261 if (mbox_post_sync_cmd(adapter
, raw_mbox
) == 0) {
3263 con_log(CL_DLEVEL1
, ("megaraid: supports random deletion\n"));
3273 * megaraid_mbox_get_max_sg - maximum sg elements supported by the firmware
3274 * @adapter - soft state for the controller
3276 * Find out the maximum number of scatter-gather elements supported by the
3280 megaraid_mbox_get_max_sg(adapter_t
*adapter
)
3283 uint8_t raw_mbox
[sizeof(mbox_t
)];
3287 mbox
= (mbox_t
*)raw_mbox
;
3289 memset((caddr_t
)raw_mbox
, 0, sizeof(mbox_t
));
3291 mbox
->xferaddr
= (uint32_t)adapter
->ibuf_dma_h
;
3293 memset((void *)adapter
->ibuf
, 0, MBOX_IBUF_SIZE
);
3295 raw_mbox
[0] = MAIN_MISC_OPCODE
;
3296 raw_mbox
[2] = GET_MAX_SG_SUPPORT
;
3298 // Issue the command
3299 if (mbox_post_sync_cmd(adapter
, raw_mbox
) == 0) {
3300 nsg
= *(uint8_t *)adapter
->ibuf
;
3303 nsg
= MBOX_DEFAULT_SG_SIZE
;
3306 if (nsg
> MBOX_MAX_SG_SIZE
) nsg
= MBOX_MAX_SG_SIZE
;
3313 * megaraid_mbox_enum_raid_scsi - enumerate the RAID and SCSI channels
3314 * @adapter - soft state for the controller
3316 * Enumerate the RAID and SCSI channels for ROMB platoforms so that channels
3317 * can be exported as regular SCSI channels
3320 megaraid_mbox_enum_raid_scsi(adapter_t
*adapter
)
3322 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
3324 uint8_t raw_mbox
[sizeof(mbox_t
)];
3327 mbox
= (mbox_t
*)raw_mbox
;
3329 memset((caddr_t
)raw_mbox
, 0, sizeof(mbox_t
));
3331 mbox
->xferaddr
= (uint32_t)adapter
->ibuf_dma_h
;
3333 memset((void *)adapter
->ibuf
, 0, MBOX_IBUF_SIZE
);
3335 raw_mbox
[0] = CHNL_CLASS
;
3336 raw_mbox
[2] = GET_CHNL_CLASS
;
3338 // Issue the command. If the command fails, all channels are RAID
3340 raid_dev
->channel_class
= 0xFF;
3341 if (mbox_post_sync_cmd(adapter
, raw_mbox
) == 0) {
3342 raid_dev
->channel_class
= *(uint8_t *)adapter
->ibuf
;
3350 * megaraid_mbox_flush_cache - flush adapter and disks cache
3351 * @param adapter : soft state for the controller
3353 * Flush adapter cache followed by disks cache
3356 megaraid_mbox_flush_cache(adapter_t
*adapter
)
3359 uint8_t raw_mbox
[sizeof(mbox_t
)];
3362 mbox
= (mbox_t
*)raw_mbox
;
3364 memset((caddr_t
)raw_mbox
, 0, sizeof(mbox_t
));
3366 raw_mbox
[0] = FLUSH_ADAPTER
;
3368 if (mbox_post_sync_cmd(adapter
, raw_mbox
) != 0) {
3369 con_log(CL_ANN
, ("megaraid: flush adapter failed\n"));
3372 raw_mbox
[0] = FLUSH_SYSTEM
;
3374 if (mbox_post_sync_cmd(adapter
, raw_mbox
) != 0) {
3375 con_log(CL_ANN
, ("megaraid: flush disks cache failed\n"));
3383 * megaraid_mbox_display_scb - display SCB information, mostly debug purposes
3384 * @param adapter : controllers' soft state
3385 * @param scb : SCB to be displayed
3386 * @param level : debug level for console print
3388 * Diplay information about the given SCB iff the current debug level is
3392 megaraid_mbox_display_scb(adapter_t
*adapter
, scb_t
*scb
)
3395 struct scsi_cmnd
*scp
;
3401 ccb
= (mbox_ccb_t
*)scb
->ccb
;
3407 con_log(level
, (KERN_NOTICE
3408 "megaraid mailbox: status:%#x cmd:%#x id:%#x ", scb
->status
,
3409 mbox
->cmd
, scb
->sno
));
3411 con_log(level
, ("sec:%#x lba:%#x addr:%#x ld:%d sg:%d\n",
3412 mbox
->numsectors
, mbox
->lba
, mbox
->xferaddr
, mbox
->logdrv
,
3417 con_log(level
, (KERN_NOTICE
"scsi cmnd: "));
3419 for (i
= 0; i
< scp
->cmd_len
; i
++) {
3420 con_log(level
, ("%#2.02x ", scp
->cmnd
[i
]));
3423 con_log(level
, ("\n"));
3430 * megaraid_mbox_setup_device_map - manage device ids
3431 * @adapter : Driver's soft state
3433 * Manange the device ids to have an appropraite mapping between the kernel
3434 * scsi addresses and megaraid scsi and logical drive addresses. We export
3435 * scsi devices on their actual addresses, whereas the logical drives are
3436 * exported on a virtual scsi channel.
3439 megaraid_mbox_setup_device_map(adapter_t
*adapter
)
3445 * First fill the values on the logical drive channel
3447 for (t
= 0; t
< LSI_MAX_LOGICAL_DRIVES_64LD
; t
++)
3448 adapter
->device_ids
[adapter
->max_channel
][t
] =
3449 (t
< adapter
->init_id
) ? t
: t
- 1;
3451 adapter
->device_ids
[adapter
->max_channel
][adapter
->init_id
] = 0xFF;
3454 * Fill the values on the physical devices channels
3456 for (c
= 0; c
< adapter
->max_channel
; c
++)
3457 for (t
= 0; t
< LSI_MAX_LOGICAL_DRIVES_64LD
; t
++)
3458 adapter
->device_ids
[c
][t
] = (c
<< 8) | t
;
3463 * END: internal commands library
3467 * START: Interface for the common management module
3469 * This is the module, which interfaces with the common mangement module to
3470 * provide support for ioctl and sysfs
3474 * megaraid_cmm_register - register with the mangement module
3475 * @param adapter : HBA soft state
3477 * Register with the management module, which allows applications to issue
3478 * ioctl calls to the drivers. This interface is used by the management module
3479 * to setup sysfs support as well.
3482 megaraid_cmm_register(adapter_t
*adapter
)
3484 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
3491 // Allocate memory for the base list of scb for management module.
3492 adapter
->uscb_list
= kmalloc(sizeof(scb_t
) * MBOX_MAX_USER_CMDS
,
3495 if (adapter
->uscb_list
== NULL
) {
3496 con_log(CL_ANN
, (KERN_WARNING
3497 "megaraid: out of memory, %s %d\n", __FUNCTION__
,
3501 memset(adapter
->uscb_list
, 0, sizeof(scb_t
) * MBOX_MAX_USER_CMDS
);
3504 // Initialize the synchronization parameters for resources for
3505 // commands for management module
3506 INIT_LIST_HEAD(&adapter
->uscb_pool
);
3508 spin_lock_init(USER_FREE_LIST_LOCK(adapter
));
3512 // link all the packets. Note, CCB for commands, coming from the
3513 // commom management module, mailbox physical address are already
3514 // setup by it. We just need placeholder for that in our local command
3516 for (i
= 0; i
< MBOX_MAX_USER_CMDS
; i
++) {
3518 scb
= adapter
->uscb_list
+ i
;
3519 ccb
= raid_dev
->uccb_list
+ i
;
3521 scb
->ccb
= (caddr_t
)ccb
;
3522 ccb
->mbox64
= raid_dev
->umbox64
+ i
;
3523 ccb
->mbox
= &ccb
->mbox64
->mbox32
;
3524 ccb
->raw_mbox
= (uint8_t *)ccb
->mbox
;
3528 // COMMAND ID 0 - (MBOX_MAX_SCSI_CMDS-1) ARE RESERVED FOR
3529 // COMMANDS COMING FROM IO SUBSYSTEM (MID-LAYER)
3530 scb
->sno
= i
+ MBOX_MAX_SCSI_CMDS
;
3533 scb
->state
= SCB_FREE
;
3534 scb
->dma_direction
= PCI_DMA_NONE
;
3535 scb
->dma_type
= MRAID_DMA_NONE
;
3536 scb
->dev_channel
= -1;
3537 scb
->dev_target
= -1;
3539 // put scb in the free pool
3540 list_add_tail(&scb
->list
, &adapter
->uscb_pool
);
3543 adp
.unique_id
= adapter
->unique_id
;
3544 adp
.drvr_type
= DRVRTYPE_MBOX
;
3545 adp
.drvr_data
= (unsigned long)adapter
;
3546 adp
.pdev
= adapter
->pdev
;
3547 adp
.issue_uioc
= megaraid_mbox_mm_handler
;
3548 adp
.timeout
= MBOX_RESET_WAIT
+ MBOX_RESET_EXT_WAIT
;
3549 adp
.max_kioc
= MBOX_MAX_USER_CMDS
;
3551 if ((rval
= mraid_mm_register_adp(&adp
)) != 0) {
3553 con_log(CL_ANN
, (KERN_WARNING
3554 "megaraid mbox: did not register with CMM\n"));
3556 kfree(adapter
->uscb_list
);
3564 * megaraid_cmm_unregister - un-register with the mangement module
3565 * @param adapter : HBA soft state
3567 * Un-register with the management module.
3568 * FIXME: mgmt module must return failure for unregister if it has pending
3572 megaraid_cmm_unregister(adapter_t
*adapter
)
3574 kfree(adapter
->uscb_list
);
3575 mraid_mm_unregister_adp(adapter
->unique_id
);
3581 * megaraid_mbox_mm_handler - interface for CMM to issue commands to LLD
3582 * @param drvr_data : LLD specific data
3583 * @param kioc : CMM interface packet
3584 * @param action : command action
3586 * This routine is invoked whenever the Common Mangement Module (CMM) has a
3587 * command for us. The 'action' parameter specifies if this is a new command
3591 megaraid_mbox_mm_handler(unsigned long drvr_data
, uioc_t
*kioc
, uint32_t action
)
3595 if (action
!= IOCTL_ISSUE
) {
3596 con_log(CL_ANN
, (KERN_WARNING
3597 "megaraid: unsupported management action:%#2x\n",
3602 adapter
= (adapter_t
*)drvr_data
;
3604 // make sure this adapter is not being detached right now.
3605 if (atomic_read(&adapter
->being_detached
)) {
3606 con_log(CL_ANN
, (KERN_WARNING
3607 "megaraid: reject management request, detaching\n"));
3611 switch (kioc
->opcode
) {
3615 kioc
->status
= gather_hbainfo(adapter
, (mraid_hba_info_t
*)
3616 (unsigned long)kioc
->buf_vaddr
);
3620 return kioc
->status
;
3624 return megaraid_mbox_mm_command(adapter
, kioc
);
3627 kioc
->status
= (-EINVAL
);
3632 return 0; // not reached
3636 * megaraid_mbox_mm_command - issues commands routed through CMM
3637 * @param adapter : HBA soft state
3638 * @param kioc : management command packet
3640 * Issues commands, which are routed through the management module.
3643 megaraid_mbox_mm_command(adapter_t
*adapter
, uioc_t
*kioc
)
3645 struct list_head
*head
= &adapter
->uscb_pool
;
3650 unsigned long flags
;
3652 // detach one scb from free pool
3653 spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter
), flags
);
3655 if (list_empty(head
)) { // should never happen because of CMM
3657 con_log(CL_ANN
, (KERN_WARNING
3658 "megaraid mbox: bug in cmm handler, lost resources\n"));
3660 spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter
), flags
);
3665 scb
= list_entry(head
->next
, scb_t
, list
);
3666 list_del_init(&scb
->list
);
3668 spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter
), flags
);
3670 scb
->state
= SCB_ACTIVE
;
3671 scb
->dma_type
= MRAID_DMA_NONE
;
3672 scb
->dma_direction
= PCI_DMA_NONE
;
3674 ccb
= (mbox_ccb_t
*)scb
->ccb
;
3675 mbox64
= (mbox64_t
*)(unsigned long)kioc
->cmdbuf
;
3676 raw_mbox
= (uint8_t *)&mbox64
->mbox32
;
3678 memcpy(ccb
->mbox64
, mbox64
, sizeof(mbox64_t
));
3680 scb
->gp
= (unsigned long)kioc
;
3683 * If it is a logdrv random delete operation, we have to wait till
3684 * there are no outstanding cmds at the fw and then issue it directly
3686 if (raw_mbox
[0] == FC_DEL_LOGDRV
&& raw_mbox
[2] == OP_DEL_LOGDRV
) {
3688 if (wait_till_fw_empty(adapter
)) {
3689 con_log(CL_ANN
, (KERN_NOTICE
3690 "megaraid mbox: LD delete, timed out\n"));
3692 kioc
->status
= -ETIME
;
3696 megaraid_mbox_mm_done(adapter
, scb
);
3701 INIT_LIST_HEAD(&scb
->list
);
3703 scb
->state
= SCB_ISSUED
;
3704 if (mbox_post_cmd(adapter
, scb
) != 0) {
3706 con_log(CL_ANN
, (KERN_NOTICE
3707 "megaraid mbox: LD delete, mailbox busy\n"));
3709 kioc
->status
= -EBUSY
;
3713 megaraid_mbox_mm_done(adapter
, scb
);
3721 // put the command on the pending list and execute
3722 megaraid_mbox_runpendq(adapter
, scb
);
3729 wait_till_fw_empty(adapter_t
*adapter
)
3731 unsigned long flags
= 0;
3736 * Set the quiescent flag to stop issuing cmds to FW.
3738 spin_lock_irqsave(&adapter
->lock
, flags
);
3739 adapter
->quiescent
++;
3740 spin_unlock_irqrestore(&adapter
->lock
, flags
);
3743 * Wait till there are no more cmds outstanding at FW. Try for at most
3746 for (i
= 0; i
< 60 && adapter
->outstanding_cmds
; i
++) {
3747 con_log(CL_DLEVEL1
, (KERN_INFO
3748 "megaraid: FW has %d pending commands\n",
3749 adapter
->outstanding_cmds
));
3754 return adapter
->outstanding_cmds
;
3759 * megaraid_mbox_mm_done - callback for CMM commands
3760 * @adapter : HBA soft state
3761 * @scb : completed command
3763 * Callback routine for internal commands originated from the management
3767 megaraid_mbox_mm_done(adapter_t
*adapter
, scb_t
*scb
)
3772 unsigned long flags
;
3774 kioc
= (uioc_t
*)scb
->gp
;
3775 mbox64
= (mbox64_t
*)(unsigned long)kioc
->cmdbuf
;
3776 mbox64
->mbox32
.status
= scb
->status
;
3777 raw_mbox
= (uint8_t *)&mbox64
->mbox32
;
3780 // put scb in the free pool
3781 scb
->state
= SCB_FREE
;
3784 spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter
), flags
);
3786 list_add(&scb
->list
, &adapter
->uscb_pool
);
3788 spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter
), flags
);
3790 // if a delete logical drive operation succeeded, restart the
3792 if (raw_mbox
[0] == FC_DEL_LOGDRV
&& raw_mbox
[2] == OP_DEL_LOGDRV
) {
3794 adapter
->quiescent
--;
3796 megaraid_mbox_runpendq(adapter
, NULL
);
3806 * gather_hbainfo - HBA characteristics for the applications
3807 * @param adapter : HBA soft state
3808 * @param hinfo : pointer to the caller's host info strucuture
3811 gather_hbainfo(adapter_t
*adapter
, mraid_hba_info_t
*hinfo
)
3815 dmajor
= megaraid_mbox_version
[0];
3817 hinfo
->pci_vendor_id
= adapter
->pdev
->vendor
;
3818 hinfo
->pci_device_id
= adapter
->pdev
->device
;
3819 hinfo
->subsys_vendor_id
= adapter
->pdev
->subsystem_vendor
;
3820 hinfo
->subsys_device_id
= adapter
->pdev
->subsystem_device
;
3822 hinfo
->pci_bus
= adapter
->pdev
->bus
->number
;
3823 hinfo
->pci_dev_fn
= adapter
->pdev
->devfn
;
3824 hinfo
->pci_slot
= PCI_SLOT(adapter
->pdev
->devfn
);
3825 hinfo
->irq
= adapter
->host
->irq
;
3826 hinfo
->baseport
= ADAP2RAIDDEV(adapter
)->baseport
;
3828 hinfo
->unique_id
= (hinfo
->pci_bus
<< 8) | adapter
->pdev
->devfn
;
3829 hinfo
->host_no
= adapter
->host
->host_no
;
3835 * END: Interface for the common management module
3841 * megaraid_sysfs_alloc_resources - allocate sysfs related resources
3843 * Allocate packets required to issue FW calls whenever the sysfs attributes
3844 * are read. These attributes would require up-to-date information from the
3845 * FW. Also set up resources for mutual exclusion to share these resources and
3848 * @param adapter : controller's soft state
3850 * @return 0 on success
3851 * @return -ERROR_CODE on failure
3854 megaraid_sysfs_alloc_resources(adapter_t
*adapter
)
3856 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
3859 raid_dev
->sysfs_uioc
= kmalloc(sizeof(uioc_t
), GFP_KERNEL
);
3861 raid_dev
->sysfs_mbox64
= kmalloc(sizeof(mbox64_t
), GFP_KERNEL
);
3863 raid_dev
->sysfs_buffer
= pci_alloc_consistent(adapter
->pdev
,
3864 PAGE_SIZE
, &raid_dev
->sysfs_buffer_dma
);
3866 if (!raid_dev
->sysfs_uioc
|| !raid_dev
->sysfs_mbox64
||
3867 !raid_dev
->sysfs_buffer
) {
3869 con_log(CL_ANN
, (KERN_WARNING
3870 "megaraid: out of memory, %s %d\n", __FUNCTION__
,
3875 megaraid_sysfs_free_resources(adapter
);
3878 sema_init(&raid_dev
->sysfs_sem
, 1);
3880 init_waitqueue_head(&raid_dev
->sysfs_wait_q
);
3887 * megaraid_sysfs_free_resources - free sysfs related resources
3889 * Free packets allocated for sysfs FW commands
3891 * @param adapter : controller's soft state
3894 megaraid_sysfs_free_resources(adapter_t
*adapter
)
3896 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
3898 kfree(raid_dev
->sysfs_uioc
);
3899 kfree(raid_dev
->sysfs_mbox64
);
3901 if (raid_dev
->sysfs_buffer
) {
3902 pci_free_consistent(adapter
->pdev
, PAGE_SIZE
,
3903 raid_dev
->sysfs_buffer
, raid_dev
->sysfs_buffer_dma
);
3909 * megaraid_sysfs_get_ldmap_done - callback for get ldmap
3911 * Callback routine called in the ISR/tasklet context for get ldmap call
3913 * @param uioc : completed packet
3916 megaraid_sysfs_get_ldmap_done(uioc_t
*uioc
)
3918 adapter_t
*adapter
= (adapter_t
*)uioc
->buf_vaddr
;
3919 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
3923 wake_up(&raid_dev
->sysfs_wait_q
);
3928 * megaraid_sysfs_get_ldmap_timeout - timeout handling for get ldmap
3930 * Timeout routine to recover and return to application, in case the adapter
3931 * has stopped responding. A timeout of 60 seconds for this command seem like
3934 * @param uioc : timed out packet
3937 megaraid_sysfs_get_ldmap_timeout(unsigned long data
)
3939 uioc_t
*uioc
= (uioc_t
*)data
;
3940 adapter_t
*adapter
= (adapter_t
*)uioc
->buf_vaddr
;
3941 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
3943 uioc
->status
= -ETIME
;
3945 wake_up(&raid_dev
->sysfs_wait_q
);
3950 * megaraid_sysfs_get_ldmap - get update logical drive map
3952 * This routine will be called whenever user reads the logical drive
3953 * attributes, go get the current logical drive mapping table from the
3954 * firmware. We use the managment API's to issue commands to the controller.
3956 * NOTE: The commands issuance functionality is not generalized and
3957 * implemented in context of "get ld map" command only. If required, the
3958 * command issuance logical can be trivially pulled out and implemented as a
3959 * standalone libary. For now, this should suffice since there is no other
3960 * user of this interface.
3962 * @param adapter : controller's soft state
3964 * @return 0 on success
3965 * @return -1 on failure
3968 megaraid_sysfs_get_ldmap(adapter_t
*adapter
)
3970 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
3975 struct timer_list sysfs_timer
;
3976 struct timer_list
*timerp
;
3981 * Allow only one read at a time to go through the sysfs attributes
3983 down(&raid_dev
->sysfs_sem
);
3985 uioc
= raid_dev
->sysfs_uioc
;
3986 mbox64
= raid_dev
->sysfs_mbox64
;
3987 ldmap
= raid_dev
->sysfs_buffer
;
3989 memset(uioc
, 0, sizeof(uioc_t
));
3990 memset(mbox64
, 0, sizeof(mbox64_t
));
3991 memset(ldmap
, 0, sizeof(raid_dev
->curr_ldmap
));
3993 mbox
= &mbox64
->mbox32
;
3994 raw_mbox
= (char *)mbox
;
3995 uioc
->cmdbuf
= (uint64_t)(unsigned long)mbox64
;
3996 uioc
->buf_vaddr
= (caddr_t
)adapter
;
3997 uioc
->status
= -ENODATA
;
3998 uioc
->done
= megaraid_sysfs_get_ldmap_done
;
4001 * Prepare the mailbox packet to get the current logical drive mapping
4004 mbox
->xferaddr
= (uint32_t)raid_dev
->sysfs_buffer_dma
;
4006 raw_mbox
[0] = FC_DEL_LOGDRV
;
4007 raw_mbox
[2] = OP_GET_LDID_MAP
;
4010 * Setup a timer to recover from a non-responding controller
4012 timerp
= &sysfs_timer
;
4015 timerp
->function
= megaraid_sysfs_get_ldmap_timeout
;
4016 timerp
->data
= (unsigned long)uioc
;
4017 timerp
->expires
= jiffies
+ 60 * HZ
;
4022 * Send the command to the firmware
4024 rval
= megaraid_mbox_mm_command(adapter
, uioc
);
4026 if (rval
== 0) { // command successfully issued
4027 wait_event(raid_dev
->sysfs_wait_q
, (uioc
->status
!= -ENODATA
));
4030 * Check if the command timed out
4032 if (uioc
->status
== -ETIME
) {
4033 con_log(CL_ANN
, (KERN_NOTICE
4034 "megaraid: sysfs get ld map timed out\n"));
4039 rval
= mbox
->status
;
4043 memcpy(raid_dev
->curr_ldmap
, ldmap
,
4044 sizeof(raid_dev
->curr_ldmap
));
4047 con_log(CL_ANN
, (KERN_NOTICE
4048 "megaraid: get ld map failed with %x\n", rval
));
4052 con_log(CL_ANN
, (KERN_NOTICE
4053 "megaraid: could not issue ldmap command:%x\n", rval
));
4057 del_timer_sync(timerp
);
4059 up(&raid_dev
->sysfs_sem
);
4066 * megaraid_sysfs_show_app_hndl - display application handle for this adapter
4068 * Display the handle used by the applications while executing management
4069 * tasks on the adapter. We invoke a management module API to get the adapter
4070 * handle, since we do not interface with applications directly.
4072 * @param cdev : class device object representation for the host
4073 * @param buf : buffer to send data to
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
4091 * Display the logical drive number for the device in question, if it a valid
4092 * logical drive. For physical devices, "-1" is returned
4093 * The logical drive number is displayed in following format
4095 * <SCSI ID> <LD NUM> <LD STICKY ID> <APP ADAPTER HANDLE>
4096 * <int> <int> <int> <int>
4098 * @param dev : device object representation for the scsi device
4099 * @param buf : buffer to send data to
4102 megaraid_sysfs_show_ldnum(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
4104 struct scsi_device
*sdev
= to_scsi_device(dev
);
4105 adapter_t
*adapter
= (adapter_t
*)SCSIHOST2ADAP(sdev
->host
);
4106 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
4108 int logical_drv
= -1;
4110 uint32_t app_hndl
= 0;
4115 if (raid_dev
->random_del_supported
&&
4116 MRAID_IS_LOGICAL_SDEV(adapter
, sdev
)) {
4118 rval
= megaraid_sysfs_get_ldmap(adapter
);
4121 for (i
= 0; i
< MAX_LOGICAL_DRIVES_40LD
; i
++) {
4123 mapped_sdev_id
= sdev
->id
;
4125 if (sdev
->id
> adapter
->init_id
) {
4126 mapped_sdev_id
-= 1;
4129 if (raid_dev
->curr_ldmap
[i
] == mapped_sdev_id
) {
4135 ldid_map
= raid_dev
->curr_ldmap
[i
];
4137 app_hndl
= mraid_mm_adapter_app_handle(
4138 adapter
->unique_id
);
4145 con_log(CL_ANN
, (KERN_NOTICE
4146 "megaraid: sysfs get ld map failed: %x\n",
4151 return snprintf(buf
, 36, "%d %d %d %d\n", scsi_id
, logical_drv
,
4152 ldid_map
, app_hndl
);
4157 * END: Mailbox Low Level Driver
4159 module_init(megaraid_init
);
4160 module_exit(megaraid_exit
);
4162 /* vim: set ts=8 sw=8 tw=78 ai si: */