3 * Linux MegaRAID device driver
5 * Copyright (c) 2003-2004 LSI Logic Corporation.
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
12 * FILE : megaraid_mbox.c
13 * Version : v2.20.5.1 (Nov 16 2006)
16 * Atul Mukker <Atul.Mukker@lsi.com>
17 * Sreenivas Bagalkote <Sreenivas.Bagalkote@lsi.com>
18 * Manoj Jose <Manoj.Jose@lsi.com>
21 * List of supported controllers
23 * OEM Product Name VID DID SSVID SSID
24 * --- ------------ --- --- ---- ----
25 * Dell PERC3/QC 101E 1960 1028 0471
26 * Dell PERC3/DC 101E 1960 1028 0493
27 * Dell PERC3/SC 101E 1960 1028 0475
28 * Dell PERC3/Di 1028 1960 1028 0123
29 * Dell PERC4/SC 1000 1960 1028 0520
30 * Dell PERC4/DC 1000 1960 1028 0518
31 * Dell PERC4/QC 1000 0407 1028 0531
32 * Dell PERC4/Di 1028 000F 1028 014A
33 * Dell PERC 4e/Si 1028 0013 1028 016c
34 * Dell PERC 4e/Di 1028 0013 1028 016d
35 * Dell PERC 4e/Di 1028 0013 1028 016e
36 * Dell PERC 4e/Di 1028 0013 1028 016f
37 * Dell PERC 4e/Di 1028 0013 1028 0170
38 * Dell PERC 4e/DC 1000 0408 1028 0002
39 * Dell PERC 4e/SC 1000 0408 1028 0001
42 * LSI MegaRAID SCSI 320-0 1000 1960 1000 A520
43 * LSI MegaRAID SCSI 320-1 1000 1960 1000 0520
44 * LSI MegaRAID SCSI 320-2 1000 1960 1000 0518
45 * LSI MegaRAID SCSI 320-0X 1000 0407 1000 0530
46 * LSI MegaRAID SCSI 320-2X 1000 0407 1000 0532
47 * LSI MegaRAID SCSI 320-4X 1000 0407 1000 0531
48 * LSI MegaRAID SCSI 320-1E 1000 0408 1000 0001
49 * LSI MegaRAID SCSI 320-2E 1000 0408 1000 0002
50 * LSI MegaRAID SATA 150-4 1000 1960 1000 4523
51 * LSI MegaRAID SATA 150-6 1000 1960 1000 0523
52 * LSI MegaRAID SATA 300-4X 1000 0409 1000 3004
53 * LSI MegaRAID SATA 300-8X 1000 0409 1000 3008
55 * INTEL RAID Controller SRCU42X 1000 0407 8086 0532
56 * INTEL RAID Controller SRCS16 1000 1960 8086 0523
57 * INTEL RAID Controller SRCU42E 1000 0408 8086 0002
58 * INTEL RAID Controller SRCZCRX 1000 0407 8086 0530
59 * INTEL RAID Controller SRCS28X 1000 0409 8086 3008
60 * INTEL RAID Controller SROMBU42E 1000 0408 8086 3431
61 * INTEL RAID Controller SROMBU42E 1000 0408 8086 3499
62 * INTEL RAID Controller SRCU51L 1000 1960 8086 0520
64 * FSC MegaRAID PCI Express ROMB 1000 0408 1734 1065
66 * ACER MegaRAID ROMB-2E 1000 0408 1025 004D
68 * NEC MegaRAID PCI Express ROMB 1000 0408 1033 8287
70 * For history of changes, see Documentation/ChangeLog.megaraid
73 #include "megaraid_mbox.h"
75 static int megaraid_init(void);
76 static void megaraid_exit(void);
78 static int megaraid_probe_one(struct pci_dev
*, const struct pci_device_id
*);
79 static void megaraid_detach_one(struct pci_dev
*);
80 static void megaraid_mbox_shutdown(struct pci_dev
*);
82 static int megaraid_io_attach(adapter_t
*);
83 static void megaraid_io_detach(adapter_t
*);
85 static int megaraid_init_mbox(adapter_t
*);
86 static void megaraid_fini_mbox(adapter_t
*);
88 static int megaraid_alloc_cmd_packets(adapter_t
*);
89 static void megaraid_free_cmd_packets(adapter_t
*);
91 static int megaraid_mbox_setup_dma_pools(adapter_t
*);
92 static void megaraid_mbox_teardown_dma_pools(adapter_t
*);
94 static int megaraid_sysfs_alloc_resources(adapter_t
*);
95 static void megaraid_sysfs_free_resources(adapter_t
*);
97 static int megaraid_abort_handler(struct scsi_cmnd
*);
98 static int megaraid_reset_handler(struct scsi_cmnd
*);
100 static int mbox_post_sync_cmd(adapter_t
*, uint8_t []);
101 static int mbox_post_sync_cmd_fast(adapter_t
*, uint8_t []);
102 static int megaraid_busywait_mbox(mraid_device_t
*);
103 static int megaraid_mbox_product_info(adapter_t
*);
104 static int megaraid_mbox_extended_cdb(adapter_t
*);
105 static int megaraid_mbox_support_ha(adapter_t
*, uint16_t *);
106 static int megaraid_mbox_support_random_del(adapter_t
*);
107 static int megaraid_mbox_get_max_sg(adapter_t
*);
108 static void megaraid_mbox_enum_raid_scsi(adapter_t
*);
109 static void megaraid_mbox_flush_cache(adapter_t
*);
110 static int megaraid_mbox_fire_sync_cmd(adapter_t
*);
112 static void megaraid_mbox_display_scb(adapter_t
*, scb_t
*);
113 static void megaraid_mbox_setup_device_map(adapter_t
*);
115 static int megaraid_queue_command(struct scsi_cmnd
*,
116 void (*)(struct scsi_cmnd
*));
117 static scb_t
*megaraid_mbox_build_cmd(adapter_t
*, struct scsi_cmnd
*, int *);
118 static void megaraid_mbox_runpendq(adapter_t
*, scb_t
*);
119 static void megaraid_mbox_prepare_pthru(adapter_t
*, scb_t
*,
121 static void megaraid_mbox_prepare_epthru(adapter_t
*, scb_t
*,
124 static irqreturn_t
megaraid_isr(int, void *);
126 static void megaraid_mbox_dpc(unsigned long);
128 static ssize_t
megaraid_sysfs_show_app_hndl(struct class_device
*, char *);
129 static ssize_t
megaraid_sysfs_show_ldnum(struct device
*, struct device_attribute
*attr
, char *);
131 static int megaraid_cmm_register(adapter_t
*);
132 static int megaraid_cmm_unregister(adapter_t
*);
133 static int megaraid_mbox_mm_handler(unsigned long, uioc_t
*, uint32_t);
134 static int megaraid_mbox_mm_command(adapter_t
*, uioc_t
*);
135 static void megaraid_mbox_mm_done(adapter_t
*, scb_t
*);
136 static int gather_hbainfo(adapter_t
*, mraid_hba_info_t
*);
137 static int wait_till_fw_empty(adapter_t
*);
141 MODULE_AUTHOR("megaraidlinux@lsi.com");
142 MODULE_DESCRIPTION("LSI Logic MegaRAID Mailbox Driver");
143 MODULE_LICENSE("GPL");
144 MODULE_VERSION(MEGARAID_VERSION
);
147 * ### modules parameters for driver ###
151 * Set to enable driver to expose unconfigured disk to kernel
153 static int megaraid_expose_unconf_disks
= 0;
154 module_param_named(unconf_disks
, megaraid_expose_unconf_disks
, int, 0);
155 MODULE_PARM_DESC(unconf_disks
,
156 "Set to expose unconfigured disks to kernel (default=0)");
159 * driver wait time if the adapter's mailbox is busy
161 static unsigned int max_mbox_busy_wait
= MBOX_BUSY_WAIT
;
162 module_param_named(busy_wait
, max_mbox_busy_wait
, int, 0);
163 MODULE_PARM_DESC(busy_wait
,
164 "Max wait for mailbox in microseconds if busy (default=10)");
167 * number of sectors per IO command
169 static unsigned int megaraid_max_sectors
= MBOX_MAX_SECTORS
;
170 module_param_named(max_sectors
, megaraid_max_sectors
, int, 0);
171 MODULE_PARM_DESC(max_sectors
,
172 "Maximum number of sectors per IO command (default=128)");
175 * number of commands per logical unit
177 static unsigned int megaraid_cmd_per_lun
= MBOX_DEF_CMD_PER_LUN
;
178 module_param_named(cmd_per_lun
, megaraid_cmd_per_lun
, int, 0);
179 MODULE_PARM_DESC(cmd_per_lun
,
180 "Maximum number of commands per logical unit (default=64)");
184 * Fast driver load option, skip scanning for physical devices during load.
185 * This would result in non-disk devices being skipped during driver load
186 * time. These can be later added though, using /proc/scsi/scsi
188 static unsigned int megaraid_fast_load
= 0;
189 module_param_named(fast_load
, megaraid_fast_load
, int, 0);
190 MODULE_PARM_DESC(fast_load
,
191 "Faster loading of the driver, skips physical devices! (default=0)");
195 * mraid_debug level - threshold for amount of information to be displayed by
196 * the driver. This level can be changed through modules parameters, ioctl or
197 * sysfs/proc interface. By default, print the announcement messages only.
199 int mraid_debug_level
= CL_ANN
;
200 module_param_named(debug_level
, mraid_debug_level
, int, 0);
201 MODULE_PARM_DESC(debug_level
, "Debug level for driver (default=0)");
204 * ### global data ###
206 static uint8_t megaraid_mbox_version
[8] =
207 { 0x02, 0x20, 0x04, 0x06, 3, 7, 20, 5 };
211 * PCI table for all supported controllers.
213 static struct pci_device_id pci_id_table_g
[] = {
216 PCI_DEVICE_ID_PERC4_DI_DISCOVERY
,
218 PCI_SUBSYS_ID_PERC4_DI_DISCOVERY
,
221 PCI_VENDOR_ID_LSI_LOGIC
,
222 PCI_DEVICE_ID_PERC4_SC
,
224 PCI_SUBSYS_ID_PERC4_SC
,
227 PCI_VENDOR_ID_LSI_LOGIC
,
228 PCI_DEVICE_ID_PERC4_DC
,
230 PCI_SUBSYS_ID_PERC4_DC
,
233 PCI_VENDOR_ID_LSI_LOGIC
,
240 PCI_DEVICE_ID_PERC4_DI_EVERGLADES
,
242 PCI_SUBSYS_ID_PERC4_DI_EVERGLADES
,
246 PCI_DEVICE_ID_PERC4E_SI_BIGBEND
,
248 PCI_SUBSYS_ID_PERC4E_SI_BIGBEND
,
252 PCI_DEVICE_ID_PERC4E_DI_KOBUK
,
254 PCI_SUBSYS_ID_PERC4E_DI_KOBUK
,
258 PCI_DEVICE_ID_PERC4E_DI_CORVETTE
,
260 PCI_SUBSYS_ID_PERC4E_DI_CORVETTE
,
264 PCI_DEVICE_ID_PERC4E_DI_EXPEDITION
,
266 PCI_SUBSYS_ID_PERC4E_DI_EXPEDITION
,
270 PCI_DEVICE_ID_PERC4E_DI_GUADALUPE
,
272 PCI_SUBSYS_ID_PERC4E_DI_GUADALUPE
,
275 PCI_VENDOR_ID_LSI_LOGIC
,
276 PCI_DEVICE_ID_DOBSON
,
282 PCI_DEVICE_ID_AMI_MEGARAID3
,
287 PCI_VENDOR_ID_LSI_LOGIC
,
288 PCI_DEVICE_ID_AMI_MEGARAID3
,
293 PCI_VENDOR_ID_LSI_LOGIC
,
294 PCI_DEVICE_ID_LINDSAY
,
298 {0} /* Terminating entry */
300 MODULE_DEVICE_TABLE(pci
, pci_id_table_g
);
303 static struct pci_driver megaraid_pci_driver_g
= {
305 .id_table
= pci_id_table_g
,
306 .probe
= megaraid_probe_one
,
307 .remove
= __devexit_p(megaraid_detach_one
),
308 .shutdown
= megaraid_mbox_shutdown
,
313 // definitions for the device attributes for exporting logical drive number
314 // for a scsi address (Host, Channel, Id, Lun)
316 CLASS_DEVICE_ATTR(megaraid_mbox_app_hndl
, S_IRUSR
, megaraid_sysfs_show_app_hndl
,
319 // Host template initializer for megaraid mbox sysfs device attributes
320 static struct class_device_attribute
*megaraid_shost_attrs
[] = {
321 &class_device_attr_megaraid_mbox_app_hndl
,
326 DEVICE_ATTR(megaraid_mbox_ld
, S_IRUSR
, megaraid_sysfs_show_ldnum
, NULL
);
328 // Host template initializer for megaraid mbox sysfs device attributes
329 static struct device_attribute
*megaraid_sdev_attrs
[] = {
330 &dev_attr_megaraid_mbox_ld
,
335 * megaraid_change_queue_depth - Change the device's queue depth
336 * @sdev: scsi device struct
337 * @qdepth: depth to set
342 static int megaraid_change_queue_depth(struct scsi_device
*sdev
, int qdepth
)
344 if (qdepth
> MBOX_MAX_SCSI_CMDS
)
345 qdepth
= MBOX_MAX_SCSI_CMDS
;
346 scsi_adjust_queue_depth(sdev
, 0, qdepth
);
347 return sdev
->queue_depth
;
351 * Scsi host template for megaraid unified driver
353 static struct scsi_host_template megaraid_template_g
= {
354 .module
= THIS_MODULE
,
355 .name
= "LSI Logic MegaRAID driver",
356 .proc_name
= "megaraid",
357 .queuecommand
= megaraid_queue_command
,
358 .eh_abort_handler
= megaraid_abort_handler
,
359 .eh_device_reset_handler
= megaraid_reset_handler
,
360 .eh_bus_reset_handler
= megaraid_reset_handler
,
361 .eh_host_reset_handler
= megaraid_reset_handler
,
362 .change_queue_depth
= megaraid_change_queue_depth
,
363 .use_clustering
= ENABLE_CLUSTERING
,
364 .sdev_attrs
= megaraid_sdev_attrs
,
365 .shost_attrs
= megaraid_shost_attrs
,
370 * megaraid_init - module load hook
372 * We register ourselves as hotplug enabled module and let PCI subsystem
373 * discover our adapters.
380 // Announce the driver version
381 con_log(CL_ANN
, (KERN_INFO
"megaraid: %s %s\n", MEGARAID_VERSION
,
382 MEGARAID_EXT_VERSION
));
384 // check validity of module parameters
385 if (megaraid_cmd_per_lun
> MBOX_MAX_SCSI_CMDS
) {
387 con_log(CL_ANN
, (KERN_WARNING
388 "megaraid mailbox: max commands per lun reset to %d\n",
389 MBOX_MAX_SCSI_CMDS
));
391 megaraid_cmd_per_lun
= MBOX_MAX_SCSI_CMDS
;
395 // register as a PCI hot-plug driver module
396 rval
= pci_register_driver(&megaraid_pci_driver_g
);
398 con_log(CL_ANN
, (KERN_WARNING
399 "megaraid: could not register hotplug support.\n"));
407 * megaraid_exit - driver unload entry point
409 * We simply unwrap the megaraid_init routine here.
414 con_log(CL_DLEVEL1
, (KERN_NOTICE
"megaraid: unloading framework\n"));
416 // unregister as PCI hotplug driver
417 pci_unregister_driver(&megaraid_pci_driver_g
);
424 * megaraid_probe_one - PCI hotplug entry point
425 * @pdev : handle to this controller's PCI configuration space
426 * @id : pci device id of the class of controllers
428 * This routine should be called whenever a new adapter is detected by the
429 * PCI hotplug susbsytem.
432 megaraid_probe_one(struct pci_dev
*pdev
, const struct pci_device_id
*id
)
437 // detected a new controller
438 con_log(CL_ANN
, (KERN_INFO
439 "megaraid: probe new device %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
440 pdev
->vendor
, pdev
->device
, pdev
->subsystem_vendor
,
441 pdev
->subsystem_device
));
443 con_log(CL_ANN
, ("bus %d:slot %d:func %d\n", pdev
->bus
->number
,
444 PCI_SLOT(pdev
->devfn
), PCI_FUNC(pdev
->devfn
)));
446 if (pci_enable_device(pdev
)) {
447 con_log(CL_ANN
, (KERN_WARNING
448 "megaraid: pci_enable_device failed\n"));
453 // Enable bus-mastering on this controller
454 pci_set_master(pdev
);
456 // Allocate the per driver initialization structure
457 adapter
= kmalloc(sizeof(adapter_t
), GFP_KERNEL
);
459 if (adapter
== NULL
) {
460 con_log(CL_ANN
, (KERN_WARNING
461 "megaraid: out of memory, %s %d.\n", __FUNCTION__
, __LINE__
));
465 memset(adapter
, 0, sizeof(adapter_t
));
468 // set up PCI related soft state and other pre-known parameters
469 adapter
->unique_id
= pdev
->bus
->number
<< 8 | pdev
->devfn
;
470 adapter
->irq
= pdev
->irq
;
471 adapter
->pdev
= pdev
;
473 atomic_set(&adapter
->being_detached
, 0);
475 // Setup the default DMA mask. This would be changed later on
476 // depending on hardware capabilities
477 if (pci_set_dma_mask(adapter
->pdev
, DMA_32BIT_MASK
) != 0) {
479 con_log(CL_ANN
, (KERN_WARNING
480 "megaraid: pci_set_dma_mask failed:%d\n", __LINE__
));
482 goto out_free_adapter
;
486 // Initialize the synchronization lock for kernel and LLD
487 spin_lock_init(&adapter
->lock
);
489 // Initialize the command queues: the list of free SCBs and the list
491 INIT_LIST_HEAD(&adapter
->kscb_pool
);
492 spin_lock_init(SCSI_FREE_LIST_LOCK(adapter
));
494 INIT_LIST_HEAD(&adapter
->pend_list
);
495 spin_lock_init(PENDING_LIST_LOCK(adapter
));
497 INIT_LIST_HEAD(&adapter
->completed_list
);
498 spin_lock_init(COMPLETED_LIST_LOCK(adapter
));
501 // Start the mailbox based controller
502 if (megaraid_init_mbox(adapter
) != 0) {
503 con_log(CL_ANN
, (KERN_WARNING
504 "megaraid: maibox adapter did not initialize\n"));
506 goto out_free_adapter
;
509 // Register with LSI Common Management Module
510 if (megaraid_cmm_register(adapter
) != 0) {
512 con_log(CL_ANN
, (KERN_WARNING
513 "megaraid: could not register with management module\n"));
518 // setup adapter handle in PCI soft state
519 pci_set_drvdata(pdev
, adapter
);
521 // attach with scsi mid-layer
522 if (megaraid_io_attach(adapter
) != 0) {
524 con_log(CL_ANN
, (KERN_WARNING
"megaraid: io attach failed\n"));
532 pci_set_drvdata(pdev
, NULL
);
533 megaraid_cmm_unregister(adapter
);
535 megaraid_fini_mbox(adapter
);
539 pci_disable_device(pdev
);
546 * megaraid_detach_one - release framework resources and call LLD release routine
547 * @pdev : handle for our PCI cofiguration space
549 * This routine is called during driver unload. We free all the allocated
550 * resources and call the corresponding LLD so that it can also release all
553 * This routine is also called from the PCI hotplug system.
556 megaraid_detach_one(struct pci_dev
*pdev
)
559 struct Scsi_Host
*host
;
562 // Start a rollback on this adapter
563 adapter
= pci_get_drvdata(pdev
);
566 con_log(CL_ANN
, (KERN_CRIT
567 "megaraid: Invalid detach on %#4.04x:%#4.04x:%#4.04x:%#4.04x\n",
568 pdev
->vendor
, pdev
->device
, pdev
->subsystem_vendor
,
569 pdev
->subsystem_device
));
574 con_log(CL_ANN
, (KERN_NOTICE
575 "megaraid: detaching device %#4.04x:%#4.04x:%#4.04x:%#4.04x\n",
576 pdev
->vendor
, pdev
->device
, pdev
->subsystem_vendor
,
577 pdev
->subsystem_device
));
581 host
= adapter
->host
;
583 // do not allow any more requests from the management module for this
585 // FIXME: How do we account for the request which might still be
587 atomic_set(&adapter
->being_detached
, 1);
589 // detach from the IO sub-system
590 megaraid_io_detach(adapter
);
592 // reset the device state in the PCI structure. We check this
593 // condition when we enter here. If the device state is NULL,
594 // that would mean the device has already been removed
595 pci_set_drvdata(pdev
, NULL
);
597 // Unregister from common management module
599 // FIXME: this must return success or failure for conditions if there
600 // is a command pending with LLD or not.
601 megaraid_cmm_unregister(adapter
);
603 // finalize the mailbox based controller and release all resources
604 megaraid_fini_mbox(adapter
);
610 pci_disable_device(pdev
);
617 * megaraid_mbox_shutdown - PCI shutdown for megaraid HBA
618 * @pdev : generic driver model device
620 * Shutdown notification, perform flush cache.
623 megaraid_mbox_shutdown(struct pci_dev
*pdev
)
625 adapter_t
*adapter
= pci_get_drvdata(pdev
);
629 con_log(CL_ANN
, (KERN_WARNING
630 "megaraid: null device in shutdown\n"));
635 con_log(CL_ANN
, (KERN_INFO
"megaraid: flushing adapter %d...",
638 megaraid_mbox_flush_cache(adapter
);
640 con_log(CL_ANN
, ("done\n"));
645 * megaraid_io_attach - attach a device with the IO subsystem
646 * @adapter : controller's soft state
648 * Attach this device with the IO subsystem.
651 megaraid_io_attach(adapter_t
*adapter
)
653 struct Scsi_Host
*host
;
655 // Initialize SCSI Host structure
656 host
= scsi_host_alloc(&megaraid_template_g
, 8);
658 con_log(CL_ANN
, (KERN_WARNING
659 "megaraid mbox: scsi_register failed\n"));
664 SCSIHOST2ADAP(host
) = (caddr_t
)adapter
;
665 adapter
->host
= host
;
667 host
->irq
= adapter
->irq
;
668 host
->unique_id
= adapter
->unique_id
;
669 host
->can_queue
= adapter
->max_cmds
;
670 host
->this_id
= adapter
->init_id
;
671 host
->sg_tablesize
= adapter
->sglen
;
672 host
->max_sectors
= adapter
->max_sectors
;
673 host
->cmd_per_lun
= adapter
->cmd_per_lun
;
674 host
->max_channel
= adapter
->max_channel
;
675 host
->max_id
= adapter
->max_target
;
676 host
->max_lun
= adapter
->max_lun
;
679 // notify mid-layer about the new controller
680 if (scsi_add_host(host
, &adapter
->pdev
->dev
)) {
682 con_log(CL_ANN
, (KERN_WARNING
683 "megaraid mbox: scsi_add_host failed\n"));
690 scsi_scan_host(host
);
697 * megaraid_io_detach - detach a device from the IO subsystem
698 * @adapter : controller's soft state
700 * Detach this device from the IO subsystem.
703 megaraid_io_detach(adapter_t
*adapter
)
705 struct Scsi_Host
*host
;
707 con_log(CL_DLEVEL1
, (KERN_INFO
"megaraid: io detach\n"));
709 host
= adapter
->host
;
711 scsi_remove_host(host
);
718 * START: Mailbox Low Level Driver
720 * This is section specific to the single mailbox based controllers
724 * megaraid_init_mbox - initialize controller
725 * @adapter : our soft state
727 * - Allocate 16-byte aligned mailbox memory for firmware handshake
728 * - Allocate controller's memory resources
729 * - Find out all initialization data
730 * - Allocate memory required for all the commands
731 * - Use internal library of FW routines, build up complete soft state
734 megaraid_init_mbox(adapter_t
*adapter
)
736 struct pci_dev
*pdev
;
737 mraid_device_t
*raid_dev
;
742 adapter
->ito
= MBOX_TIMEOUT
;
743 pdev
= adapter
->pdev
;
746 * Allocate and initialize the init data structure for mailbox
749 raid_dev
= kmalloc(sizeof(mraid_device_t
), GFP_KERNEL
);
750 if (raid_dev
== NULL
) return -1;
752 memset(raid_dev
, 0, sizeof(mraid_device_t
));
755 * Attach the adapter soft state to raid device soft state
757 adapter
->raid_device
= (caddr_t
)raid_dev
;
758 raid_dev
->fast_load
= megaraid_fast_load
;
762 raid_dev
->baseport
= pci_resource_start(pdev
, 0);
764 if (pci_request_regions(pdev
, "MegaRAID: LSI Logic Corporation") != 0) {
766 con_log(CL_ANN
, (KERN_WARNING
767 "megaraid: mem region busy\n"));
769 goto out_free_raid_dev
;
772 raid_dev
->baseaddr
= ioremap_nocache(raid_dev
->baseport
, 128);
774 if (!raid_dev
->baseaddr
) {
776 con_log(CL_ANN
, (KERN_WARNING
777 "megaraid: could not map hba memory\n") );
779 goto out_release_regions
;
782 /* initialize the mutual exclusion lock for the mailbox */
783 spin_lock_init(&raid_dev
->mailbox_lock
);
785 /* allocate memory required for commands */
786 if (megaraid_alloc_cmd_packets(adapter
) != 0)
790 * Issue SYNC cmd to flush the pending cmds in the adapter
791 * and initialize its internal state
794 if (megaraid_mbox_fire_sync_cmd(adapter
))
795 con_log(CL_ANN
, ("megaraid: sync cmd failed\n"));
798 * Setup the rest of the soft state using the library of
802 /* request IRQ and register the interrupt service routine */
803 if (request_irq(adapter
->irq
, megaraid_isr
, IRQF_SHARED
, "megaraid",
806 con_log(CL_ANN
, (KERN_WARNING
807 "megaraid: Couldn't register IRQ %d!\n", adapter
->irq
));
813 if (megaraid_mbox_product_info(adapter
) != 0)
816 // Do we support extended CDBs
817 adapter
->max_cdb_sz
= 10;
818 if (megaraid_mbox_extended_cdb(adapter
) == 0) {
819 adapter
->max_cdb_sz
= 16;
823 * Do we support cluster environment, if we do, what is the initiator
825 * NOTE: In a non-cluster aware firmware environment, the LLD should
826 * return 7 as initiator id.
829 adapter
->init_id
= -1;
830 if (megaraid_mbox_support_ha(adapter
, &adapter
->init_id
) == 0) {
835 * Prepare the device ids array to have the mapping between the kernel
836 * device address and megaraid device address.
837 * We export the physical devices on their actual addresses. The
838 * logical drives are exported on a virtual SCSI channel
840 megaraid_mbox_setup_device_map(adapter
);
842 // If the firmware supports random deletion, update the device id map
843 if (megaraid_mbox_support_random_del(adapter
)) {
845 // Change the logical drives numbers in device_ids array one
846 // slot in device_ids is reserved for target id, that's why
848 for (i
= 0; i
<= MAX_LOGICAL_DRIVES_40LD
; i
++) {
849 adapter
->device_ids
[adapter
->max_channel
][i
] += 0x80;
851 adapter
->device_ids
[adapter
->max_channel
][adapter
->init_id
] =
854 raid_dev
->random_del_supported
= 1;
858 * find out the maximum number of scatter-gather elements supported by
861 adapter
->sglen
= megaraid_mbox_get_max_sg(adapter
);
863 // enumerate RAID and SCSI channels so that all devices on SCSI
864 // channels can later be exported, including disk devices
865 megaraid_mbox_enum_raid_scsi(adapter
);
868 * Other parameters required by upper layer
870 * maximum number of sectors per IO command
872 adapter
->max_sectors
= megaraid_max_sectors
;
875 * number of queued commands per LUN.
877 adapter
->cmd_per_lun
= megaraid_cmd_per_lun
;
880 * Allocate resources required to issue FW calls, when sysfs is
883 if (megaraid_sysfs_alloc_resources(adapter
) != 0)
886 // Set the DMA mask to 64-bit. All supported controllers as capable of
888 pci_read_config_dword(adapter
->pdev
, PCI_CONF_AMISIG64
, &magic64
);
890 if (((magic64
== HBA_SIGNATURE_64_BIT
) &&
891 ((adapter
->pdev
->subsystem_device
!=
892 PCI_SUBSYS_ID_MEGARAID_SATA_150_6
) &&
893 (adapter
->pdev
->subsystem_device
!=
894 PCI_SUBSYS_ID_MEGARAID_SATA_150_4
))) ||
895 (adapter
->pdev
->vendor
== PCI_VENDOR_ID_LSI_LOGIC
&&
896 adapter
->pdev
->device
== PCI_DEVICE_ID_VERDE
) ||
897 (adapter
->pdev
->vendor
== PCI_VENDOR_ID_LSI_LOGIC
&&
898 adapter
->pdev
->device
== PCI_DEVICE_ID_DOBSON
) ||
899 (adapter
->pdev
->vendor
== PCI_VENDOR_ID_LSI_LOGIC
&&
900 adapter
->pdev
->device
== PCI_DEVICE_ID_LINDSAY
) ||
901 (adapter
->pdev
->vendor
== PCI_VENDOR_ID_DELL
&&
902 adapter
->pdev
->device
== PCI_DEVICE_ID_PERC4_DI_EVERGLADES
) ||
903 (adapter
->pdev
->vendor
== PCI_VENDOR_ID_DELL
&&
904 adapter
->pdev
->device
== PCI_DEVICE_ID_PERC4E_DI_KOBUK
)) {
905 if (pci_set_dma_mask(adapter
->pdev
, DMA_64BIT_MASK
)) {
906 con_log(CL_ANN
, (KERN_WARNING
907 "megaraid: DMA mask for 64-bit failed\n"));
909 if (pci_set_dma_mask (adapter
->pdev
, DMA_32BIT_MASK
)) {
910 con_log(CL_ANN
, (KERN_WARNING
911 "megaraid: 32-bit DMA mask failed\n"));
912 goto out_free_sysfs_res
;
917 // setup tasklet for DPC
918 tasklet_init(&adapter
->dpc_h
, megaraid_mbox_dpc
,
919 (unsigned long)adapter
);
921 con_log(CL_DLEVEL1
, (KERN_INFO
922 "megaraid mbox hba successfully initialized\n"));
927 megaraid_sysfs_free_resources(adapter
);
929 free_irq(adapter
->irq
, adapter
);
931 megaraid_free_cmd_packets(adapter
);
933 iounmap(raid_dev
->baseaddr
);
935 pci_release_regions(pdev
);
944 * megaraid_fini_mbox - undo controller initialization
945 * @adapter : our soft state
948 megaraid_fini_mbox(adapter_t
*adapter
)
950 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
953 megaraid_mbox_flush_cache(adapter
);
955 tasklet_kill(&adapter
->dpc_h
);
957 megaraid_sysfs_free_resources(adapter
);
959 megaraid_free_cmd_packets(adapter
);
961 free_irq(adapter
->irq
, adapter
);
963 iounmap(raid_dev
->baseaddr
);
965 pci_release_regions(adapter
->pdev
);
974 * megaraid_alloc_cmd_packets - allocate shared mailbox
975 * @adapter : soft state of the raid controller
977 * Allocate and align the shared mailbox. This maibox is used to issue
978 * all the commands. For IO based controllers, the mailbox is also regsitered
979 * with the FW. Allocate memory for all commands as well.
980 * This is our big allocator.
983 megaraid_alloc_cmd_packets(adapter_t
*adapter
)
985 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
986 struct pci_dev
*pdev
;
990 struct mraid_pci_blk
*epthru_pci_blk
;
991 struct mraid_pci_blk
*sg_pci_blk
;
992 struct mraid_pci_blk
*mbox_pci_blk
;
995 pdev
= adapter
->pdev
;
999 * Allocate the common 16-byte aligned memory for the handshake
1002 raid_dev
->una_mbox64
= pci_alloc_consistent(adapter
->pdev
,
1003 sizeof(mbox64_t
), &raid_dev
->una_mbox64_dma
);
1005 if (!raid_dev
->una_mbox64
) {
1006 con_log(CL_ANN
, (KERN_WARNING
1007 "megaraid: out of memory, %s %d\n", __FUNCTION__
,
1011 memset(raid_dev
->una_mbox64
, 0, sizeof(mbox64_t
));
1014 * Align the mailbox at 16-byte boundary
1016 raid_dev
->mbox
= &raid_dev
->una_mbox64
->mbox32
;
1018 raid_dev
->mbox
= (mbox_t
*)((((unsigned long)raid_dev
->mbox
) + 15) &
1021 raid_dev
->mbox64
= (mbox64_t
*)(((unsigned long)raid_dev
->mbox
) - 8);
1023 align
= ((void *)raid_dev
->mbox
-
1024 ((void *)&raid_dev
->una_mbox64
->mbox32
));
1026 raid_dev
->mbox_dma
= (unsigned long)raid_dev
->una_mbox64_dma
+ 8 +
1029 // Allocate memory for commands issued internally
1030 adapter
->ibuf
= pci_alloc_consistent(pdev
, MBOX_IBUF_SIZE
,
1031 &adapter
->ibuf_dma_h
);
1032 if (!adapter
->ibuf
) {
1034 con_log(CL_ANN
, (KERN_WARNING
1035 "megaraid: out of memory, %s %d\n", __FUNCTION__
,
1038 goto out_free_common_mbox
;
1040 memset(adapter
->ibuf
, 0, MBOX_IBUF_SIZE
);
1042 // Allocate memory for our SCSI Command Blocks and their associated
1046 * Allocate memory for the base list of scb. Later allocate memory for
1047 * CCBs and embedded components of each CCB and point the pointers in
1048 * scb to the allocated components
1049 * NOTE: The code to allocate SCB will be duplicated in all the LLD
1050 * since the calling routine does not yet know the number of available
1053 adapter
->kscb_list
= kmalloc(sizeof(scb_t
) * MBOX_MAX_SCSI_CMDS
,
1056 if (adapter
->kscb_list
== NULL
) {
1057 con_log(CL_ANN
, (KERN_WARNING
1058 "megaraid: out of memory, %s %d\n", __FUNCTION__
,
1062 memset(adapter
->kscb_list
, 0, sizeof(scb_t
) * MBOX_MAX_SCSI_CMDS
);
1064 // memory allocation for our command packets
1065 if (megaraid_mbox_setup_dma_pools(adapter
) != 0) {
1066 con_log(CL_ANN
, (KERN_WARNING
1067 "megaraid: out of memory, %s %d\n", __FUNCTION__
,
1069 goto out_free_scb_list
;
1072 // Adjust the scb pointers and link in the free pool
1073 epthru_pci_blk
= raid_dev
->epthru_pool
;
1074 sg_pci_blk
= raid_dev
->sg_pool
;
1075 mbox_pci_blk
= raid_dev
->mbox_pool
;
1077 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
; i
++) {
1078 scb
= adapter
->kscb_list
+ i
;
1079 ccb
= raid_dev
->ccb_list
+ i
;
1081 ccb
->mbox
= (mbox_t
*)(mbox_pci_blk
[i
].vaddr
+ 16);
1082 ccb
->raw_mbox
= (uint8_t *)ccb
->mbox
;
1083 ccb
->mbox64
= (mbox64_t
*)(mbox_pci_blk
[i
].vaddr
+ 8);
1084 ccb
->mbox_dma_h
= (unsigned long)mbox_pci_blk
[i
].dma_addr
+ 16;
1086 // make sure the mailbox is aligned properly
1087 if (ccb
->mbox_dma_h
& 0x0F) {
1088 con_log(CL_ANN
, (KERN_CRIT
1089 "megaraid mbox: not aligned on 16-bytes\n"));
1091 goto out_teardown_dma_pools
;
1094 ccb
->epthru
= (mraid_epassthru_t
*)
1095 epthru_pci_blk
[i
].vaddr
;
1096 ccb
->epthru_dma_h
= epthru_pci_blk
[i
].dma_addr
;
1097 ccb
->pthru
= (mraid_passthru_t
*)ccb
->epthru
;
1098 ccb
->pthru_dma_h
= ccb
->epthru_dma_h
;
1101 ccb
->sgl64
= (mbox_sgl64
*)sg_pci_blk
[i
].vaddr
;
1102 ccb
->sgl_dma_h
= sg_pci_blk
[i
].dma_addr
;
1103 ccb
->sgl32
= (mbox_sgl32
*)ccb
->sgl64
;
1105 scb
->ccb
= (caddr_t
)ccb
;
1108 scb
->sno
= i
; // command index
1111 scb
->state
= SCB_FREE
;
1112 scb
->dma_direction
= PCI_DMA_NONE
;
1113 scb
->dma_type
= MRAID_DMA_NONE
;
1114 scb
->dev_channel
= -1;
1115 scb
->dev_target
= -1;
1117 // put scb in the free pool
1118 list_add_tail(&scb
->list
, &adapter
->kscb_pool
);
1123 out_teardown_dma_pools
:
1124 megaraid_mbox_teardown_dma_pools(adapter
);
1126 kfree(adapter
->kscb_list
);
1128 pci_free_consistent(pdev
, MBOX_IBUF_SIZE
, (void *)adapter
->ibuf
,
1129 adapter
->ibuf_dma_h
);
1130 out_free_common_mbox
:
1131 pci_free_consistent(adapter
->pdev
, sizeof(mbox64_t
),
1132 (caddr_t
)raid_dev
->una_mbox64
, raid_dev
->una_mbox64_dma
);
1139 * megaraid_free_cmd_packets - free memory
1140 * @adapter : soft state of the raid controller
1142 * Release memory resources allocated for commands.
1145 megaraid_free_cmd_packets(adapter_t
*adapter
)
1147 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
1149 megaraid_mbox_teardown_dma_pools(adapter
);
1151 kfree(adapter
->kscb_list
);
1153 pci_free_consistent(adapter
->pdev
, MBOX_IBUF_SIZE
,
1154 (void *)adapter
->ibuf
, adapter
->ibuf_dma_h
);
1156 pci_free_consistent(adapter
->pdev
, sizeof(mbox64_t
),
1157 (caddr_t
)raid_dev
->una_mbox64
, raid_dev
->una_mbox64_dma
);
1163 * megaraid_mbox_setup_dma_pools - setup dma pool for command packets
1164 * @adapter : HBA soft state
1166 * Setup the dma pools for mailbox, passthru and extended passthru structures,
1167 * and scatter-gather lists.
1170 megaraid_mbox_setup_dma_pools(adapter_t
*adapter
)
1172 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
1173 struct mraid_pci_blk
*epthru_pci_blk
;
1174 struct mraid_pci_blk
*sg_pci_blk
;
1175 struct mraid_pci_blk
*mbox_pci_blk
;
1180 // Allocate memory for 16-bytes aligned mailboxes
1181 raid_dev
->mbox_pool_handle
= pci_pool_create("megaraid mbox pool",
1183 sizeof(mbox64_t
) + 16,
1186 if (raid_dev
->mbox_pool_handle
== NULL
) {
1187 goto fail_setup_dma_pool
;
1190 mbox_pci_blk
= raid_dev
->mbox_pool
;
1191 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
; i
++) {
1192 mbox_pci_blk
[i
].vaddr
= pci_pool_alloc(
1193 raid_dev
->mbox_pool_handle
,
1195 &mbox_pci_blk
[i
].dma_addr
);
1196 if (!mbox_pci_blk
[i
].vaddr
) {
1197 goto fail_setup_dma_pool
;
1202 * Allocate memory for each embedded passthru strucuture pointer
1203 * Request for a 128 bytes aligned structure for each passthru command
1205 * Since passthru and extended passthru commands are exclusive, they
1206 * share common memory pool. Passthru structures piggyback on memory
1207 * allocted to extended passthru since passthru is smaller of the two
1209 raid_dev
->epthru_pool_handle
= pci_pool_create("megaraid mbox pthru",
1210 adapter
->pdev
, sizeof(mraid_epassthru_t
), 128, 0);
1212 if (raid_dev
->epthru_pool_handle
== NULL
) {
1213 goto fail_setup_dma_pool
;
1216 epthru_pci_blk
= raid_dev
->epthru_pool
;
1217 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
; i
++) {
1218 epthru_pci_blk
[i
].vaddr
= pci_pool_alloc(
1219 raid_dev
->epthru_pool_handle
,
1221 &epthru_pci_blk
[i
].dma_addr
);
1222 if (!epthru_pci_blk
[i
].vaddr
) {
1223 goto fail_setup_dma_pool
;
1228 // Allocate memory for each scatter-gather list. Request for 512 bytes
1229 // alignment for each sg list
1230 raid_dev
->sg_pool_handle
= pci_pool_create("megaraid mbox sg",
1232 sizeof(mbox_sgl64
) * MBOX_MAX_SG_SIZE
,
1235 if (raid_dev
->sg_pool_handle
== NULL
) {
1236 goto fail_setup_dma_pool
;
1239 sg_pci_blk
= raid_dev
->sg_pool
;
1240 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
; i
++) {
1241 sg_pci_blk
[i
].vaddr
= pci_pool_alloc(
1242 raid_dev
->sg_pool_handle
,
1244 &sg_pci_blk
[i
].dma_addr
);
1245 if (!sg_pci_blk
[i
].vaddr
) {
1246 goto fail_setup_dma_pool
;
1252 fail_setup_dma_pool
:
1253 megaraid_mbox_teardown_dma_pools(adapter
);
1259 * megaraid_mbox_teardown_dma_pools - teardown dma pools for command packets
1260 * @adapter : HBA soft state
1262 * Teardown the dma pool for mailbox, passthru and extended passthru
1263 * structures, and scatter-gather lists.
1266 megaraid_mbox_teardown_dma_pools(adapter_t
*adapter
)
1268 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
1269 struct mraid_pci_blk
*epthru_pci_blk
;
1270 struct mraid_pci_blk
*sg_pci_blk
;
1271 struct mraid_pci_blk
*mbox_pci_blk
;
1275 sg_pci_blk
= raid_dev
->sg_pool
;
1276 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
&& sg_pci_blk
[i
].vaddr
; i
++) {
1277 pci_pool_free(raid_dev
->sg_pool_handle
, sg_pci_blk
[i
].vaddr
,
1278 sg_pci_blk
[i
].dma_addr
);
1280 if (raid_dev
->sg_pool_handle
)
1281 pci_pool_destroy(raid_dev
->sg_pool_handle
);
1284 epthru_pci_blk
= raid_dev
->epthru_pool
;
1285 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
&& epthru_pci_blk
[i
].vaddr
; i
++) {
1286 pci_pool_free(raid_dev
->epthru_pool_handle
,
1287 epthru_pci_blk
[i
].vaddr
, epthru_pci_blk
[i
].dma_addr
);
1289 if (raid_dev
->epthru_pool_handle
)
1290 pci_pool_destroy(raid_dev
->epthru_pool_handle
);
1293 mbox_pci_blk
= raid_dev
->mbox_pool
;
1294 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
&& mbox_pci_blk
[i
].vaddr
; i
++) {
1295 pci_pool_free(raid_dev
->mbox_pool_handle
,
1296 mbox_pci_blk
[i
].vaddr
, mbox_pci_blk
[i
].dma_addr
);
1298 if (raid_dev
->mbox_pool_handle
)
1299 pci_pool_destroy(raid_dev
->mbox_pool_handle
);
1306 * megaraid_alloc_scb - detach and return a scb from the free list
1307 * @adapter : controller's soft state
1308 * @scp : pointer to the scsi command to be executed
1310 * Return the scb from the head of the free list. %NULL if there are none
1314 megaraid_alloc_scb(adapter_t
*adapter
, struct scsi_cmnd
*scp
)
1316 struct list_head
*head
= &adapter
->kscb_pool
;
1318 unsigned long flags
;
1320 // detach scb from free pool
1321 spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter
), flags
);
1323 if (list_empty(head
)) {
1324 spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter
), flags
);
1328 scb
= list_entry(head
->next
, scb_t
, list
);
1329 list_del_init(&scb
->list
);
1331 spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter
), flags
);
1333 scb
->state
= SCB_ACTIVE
;
1335 scb
->dma_type
= MRAID_DMA_NONE
;
1342 * megaraid_dealloc_scb - return the scb to the free pool
1343 * @adapter : controller's soft state
1344 * @scb : scb to be freed
1346 * Return the scb back to the free list of scbs. The caller must 'flush' the
1347 * SCB before calling us. E.g., performing pci_unamp and/or pci_sync etc.
1348 * NOTE NOTE: Make sure the scb is not on any list before calling this
1352 megaraid_dealloc_scb(adapter_t
*adapter
, scb_t
*scb
)
1354 unsigned long flags
;
1356 // put scb in the free pool
1357 scb
->state
= SCB_FREE
;
1359 spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter
), flags
);
1361 list_add(&scb
->list
, &adapter
->kscb_pool
);
1363 spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter
), flags
);
1370 * megaraid_mbox_mksgl - make the scatter-gather list
1371 * @adapter : controller's soft state
1372 * @scb : scsi control block
1374 * Prepare the scatter-gather list.
1377 megaraid_mbox_mksgl(adapter_t
*adapter
, scb_t
*scb
)
1379 struct scatterlist
*sgl
;
1382 unsigned long offset
;
1383 struct scsi_cmnd
*scp
;
1389 ccb
= (mbox_ccb_t
*)scb
->ccb
;
1391 // no mapping required if no data to be transferred
1392 if (!scp
->request_buffer
|| !scp
->request_bufflen
)
1395 if (!scp
->use_sg
) { /* scatter-gather list not used */
1397 page
= virt_to_page(scp
->request_buffer
);
1399 offset
= ((unsigned long)scp
->request_buffer
& ~PAGE_MASK
);
1401 ccb
->buf_dma_h
= pci_map_page(adapter
->pdev
, page
, offset
,
1402 scp
->request_bufflen
,
1403 scb
->dma_direction
);
1404 scb
->dma_type
= MRAID_DMA_WBUF
;
1407 * We need to handle special 64-bit commands that need a
1411 ccb
->sgl64
[0].address
= ccb
->buf_dma_h
;
1412 ccb
->sgl64
[0].length
= scp
->request_bufflen
;
1417 sgl
= (struct scatterlist
*)scp
->request_buffer
;
1419 // The number of sg elements returned must not exceed our limit
1420 sgcnt
= pci_map_sg(adapter
->pdev
, sgl
, scp
->use_sg
,
1421 scb
->dma_direction
);
1423 if (sgcnt
> adapter
->sglen
) {
1424 con_log(CL_ANN
, (KERN_CRIT
1425 "megaraid critical: too many sg elements:%d\n",
1430 scb
->dma_type
= MRAID_DMA_WSG
;
1432 for (i
= 0; i
< sgcnt
; i
++, sgl
++) {
1433 ccb
->sgl64
[i
].address
= sg_dma_address(sgl
);
1434 ccb
->sgl64
[i
].length
= sg_dma_len(sgl
);
1437 // Return count of SG nodes
1443 * mbox_post_cmd - issue a mailbox command
1444 * @adapter : controller's soft state
1445 * @scb : command to be issued
1447 * Post the command to the controller if mailbox is available.
1450 mbox_post_cmd(adapter_t
*adapter
, scb_t
*scb
)
1452 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
1456 unsigned long flags
;
1460 ccb
= (mbox_ccb_t
*)scb
->ccb
;
1461 mbox
= raid_dev
->mbox
;
1462 mbox64
= raid_dev
->mbox64
;
1465 * Check for busy mailbox. If it is, return failure - the caller
1466 * should retry later.
1468 spin_lock_irqsave(MAILBOX_LOCK(raid_dev
), flags
);
1470 if (unlikely(mbox
->busy
)) {
1475 } while(mbox
->busy
&& (i
< max_mbox_busy_wait
));
1479 spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev
), flags
);
1486 // Copy this command's mailbox data into "adapter's" mailbox
1487 memcpy((caddr_t
)mbox64
, (caddr_t
)ccb
->mbox64
, 22);
1488 mbox
->cmdid
= scb
->sno
;
1490 adapter
->outstanding_cmds
++;
1492 if (scb
->dma_direction
== PCI_DMA_TODEVICE
) {
1493 if (!scb
->scp
->use_sg
) { // sg list not used
1494 pci_dma_sync_single_for_device(adapter
->pdev
,
1496 scb
->scp
->request_bufflen
,
1500 pci_dma_sync_sg_for_device(adapter
->pdev
,
1501 scb
->scp
->request_buffer
,
1502 scb
->scp
->use_sg
, PCI_DMA_TODEVICE
);
1506 mbox
->busy
= 1; // Set busy
1511 WRINDOOR(raid_dev
, raid_dev
->mbox_dma
| 0x1);
1513 spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev
), flags
);
1520 * megaraid_queue_command - generic queue entry point for all LLDs
1521 * @scp : pointer to the scsi command to be executed
1522 * @done : callback routine to be called after the cmd has be completed
1524 * Queue entry point for mailbox based controllers.
1527 megaraid_queue_command(struct scsi_cmnd
*scp
, void (*done
)(struct scsi_cmnd
*))
1533 adapter
= SCP2ADAPTER(scp
);
1534 scp
->scsi_done
= done
;
1538 * Allocate and build a SCB request
1539 * if_busy flag will be set if megaraid_mbox_build_cmd() command could
1540 * not allocate scb. We will return non-zero status in that case.
1541 * NOTE: scb can be null even though certain commands completed
1542 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, it would
1543 * return 0 in that case, and we would do the callback right away.
1546 scb
= megaraid_mbox_build_cmd(adapter
, scp
, &if_busy
);
1547 if (!scb
) { // command already completed
1552 megaraid_mbox_runpendq(adapter
, scb
);
1557 * megaraid_mbox_build_cmd - transform the mid-layer scsi commands
1558 * @adapter : controller's soft state
1559 * @scp : mid-layer scsi command pointer
1560 * @busy : set if request could not be completed because of lack of
1563 * Transform the mid-layer scsi command to megaraid firmware lingua.
1564 * Convert the command issued by mid-layer to format understood by megaraid
1565 * firmware. We also complete certain commands without sending them to firmware.
1568 megaraid_mbox_build_cmd(adapter_t
*adapter
, struct scsi_cmnd
*scp
, int *busy
)
1570 mraid_device_t
*rdev
= ADAP2RAIDDEV(adapter
);
1575 mraid_passthru_t
*pthru
;
1579 char skip
[] = "skipping";
1580 char scan
[] = "scanning";
1585 * Get the appropriate device map for the device this command is
1588 MRAID_GET_DEVICE_MAP(adapter
, scp
, channel
, target
, islogical
);
1591 * Logical drive commands
1594 switch (scp
->cmnd
[0]) {
1595 case TEST_UNIT_READY
:
1597 * Do we support clustering and is the support enabled
1598 * If no, return success always
1601 scp
->result
= (DID_OK
<< 16);
1605 if (!(scb
= megaraid_alloc_scb(adapter
, scp
))) {
1606 scp
->result
= (DID_ERROR
<< 16);
1611 scb
->dma_direction
= scp
->sc_data_direction
;
1612 scb
->dev_channel
= 0xFF;
1613 scb
->dev_target
= target
;
1614 ccb
= (mbox_ccb_t
*)scb
->ccb
;
1617 * The command id will be provided by the command
1620 ccb
->raw_mbox
[0] = CLUSTER_CMD
;
1621 ccb
->raw_mbox
[2] = RESERVATION_STATUS
;
1622 ccb
->raw_mbox
[3] = target
;
1628 struct scatterlist
*sgl
;
1631 sgl
= (struct scatterlist
*)scp
->request_buffer
;
1634 (page_address((&sgl
[0])->page
)
1635 + (&sgl
[0])->offset
);
1637 memset(vaddr
, 0, scp
->cmnd
[4]);
1640 con_log(CL_ANN
, (KERN_WARNING
1641 "megaraid mailbox: invalid sg:%d\n",
1646 memset(scp
->request_buffer
, 0, scp
->cmnd
[4]);
1648 scp
->result
= (DID_OK
<< 16);
1653 * Display the channel scan for logical drives
1654 * Do not display scan for a channel if already done.
1656 if (!(rdev
->last_disp
& (1L << SCP2CHANNEL(scp
)))) {
1658 con_log(CL_ANN
, (KERN_INFO
1659 "scsi[%d]: scanning scsi channel %d",
1660 adapter
->host
->host_no
,
1664 " [virtual] for logical drives\n"));
1666 rdev
->last_disp
|= (1L << SCP2CHANNEL(scp
));
1669 if (scp
->cmnd
[1] & MEGA_SCSI_INQ_EVPD
) {
1670 scp
->sense_buffer
[0] = 0x70;
1671 scp
->sense_buffer
[2] = ILLEGAL_REQUEST
;
1672 scp
->sense_buffer
[12] = MEGA_INVALID_FIELD_IN_CDB
;
1673 scp
->result
= CHECK_CONDITION
<< 1;
1681 * Do not allow LUN > 0 for logical drives and
1682 * requests for more than 40 logical drives
1685 scp
->result
= (DID_BAD_TARGET
<< 16);
1688 if ((target
% 0x80) >= MAX_LOGICAL_DRIVES_40LD
) {
1689 scp
->result
= (DID_BAD_TARGET
<< 16);
1694 /* Allocate a SCB and initialize passthru */
1695 if (!(scb
= megaraid_alloc_scb(adapter
, scp
))) {
1696 scp
->result
= (DID_ERROR
<< 16);
1701 ccb
= (mbox_ccb_t
*)scb
->ccb
;
1702 scb
->dev_channel
= 0xFF;
1703 scb
->dev_target
= target
;
1706 mbox64
= ccb
->mbox64
;
1710 pthru
->reqsenselen
= 14;
1711 pthru
->islogical
= 1;
1712 pthru
->logdrv
= target
;
1713 pthru
->cdblen
= scp
->cmd_len
;
1714 memcpy(pthru
->cdb
, scp
->cmnd
, scp
->cmd_len
);
1716 mbox
->cmd
= MBOXCMD_PASSTHRU64
;
1717 scb
->dma_direction
= scp
->sc_data_direction
;
1719 pthru
->dataxferlen
= scp
->request_bufflen
;
1720 pthru
->dataxferaddr
= ccb
->sgl_dma_h
;
1721 pthru
->numsge
= megaraid_mbox_mksgl(adapter
,
1724 mbox
->xferaddr
= 0xFFFFFFFF;
1725 mbox64
->xferaddr_lo
= (uint32_t )ccb
->pthru_dma_h
;
1726 mbox64
->xferaddr_hi
= 0;
1738 * Allocate a SCB and initialize mailbox
1740 if (!(scb
= megaraid_alloc_scb(adapter
, scp
))) {
1741 scp
->result
= (DID_ERROR
<< 16);
1745 ccb
= (mbox_ccb_t
*)scb
->ccb
;
1746 scb
->dev_channel
= 0xFF;
1747 scb
->dev_target
= target
;
1749 mbox64
= ccb
->mbox64
;
1750 mbox
->logdrv
= target
;
1753 * A little HACK: 2nd bit is zero for all scsi read
1754 * commands and is set for all scsi write commands
1756 mbox
->cmd
= (scp
->cmnd
[0] & 0x02) ? MBOXCMD_LWRITE64
:
1760 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1762 if (scp
->cmd_len
== 6) {
1763 mbox
->numsectors
= (uint32_t)scp
->cmnd
[4];
1765 ((uint32_t)scp
->cmnd
[1] << 16) |
1766 ((uint32_t)scp
->cmnd
[2] << 8) |
1767 (uint32_t)scp
->cmnd
[3];
1769 mbox
->lba
&= 0x1FFFFF;
1773 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1775 else if (scp
->cmd_len
== 10) {
1777 (uint32_t)scp
->cmnd
[8] |
1778 ((uint32_t)scp
->cmnd
[7] << 8);
1780 ((uint32_t)scp
->cmnd
[2] << 24) |
1781 ((uint32_t)scp
->cmnd
[3] << 16) |
1782 ((uint32_t)scp
->cmnd
[4] << 8) |
1783 (uint32_t)scp
->cmnd
[5];
1787 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1789 else if (scp
->cmd_len
== 12) {
1791 ((uint32_t)scp
->cmnd
[2] << 24) |
1792 ((uint32_t)scp
->cmnd
[3] << 16) |
1793 ((uint32_t)scp
->cmnd
[4] << 8) |
1794 (uint32_t)scp
->cmnd
[5];
1797 ((uint32_t)scp
->cmnd
[6] << 24) |
1798 ((uint32_t)scp
->cmnd
[7] << 16) |
1799 ((uint32_t)scp
->cmnd
[8] << 8) |
1800 (uint32_t)scp
->cmnd
[9];
1803 con_log(CL_ANN
, (KERN_WARNING
1804 "megaraid: unsupported CDB length\n"));
1806 megaraid_dealloc_scb(adapter
, scb
);
1808 scp
->result
= (DID_ERROR
<< 16);
1812 scb
->dma_direction
= scp
->sc_data_direction
;
1814 // Calculate Scatter-Gather info
1815 mbox64
->xferaddr_lo
= (uint32_t )ccb
->sgl_dma_h
;
1816 mbox
->numsge
= megaraid_mbox_mksgl(adapter
,
1818 mbox
->xferaddr
= 0xFFFFFFFF;
1819 mbox64
->xferaddr_hi
= 0;
1826 * Do we support clustering and is the support enabled
1829 scp
->result
= (DID_BAD_TARGET
<< 16);
1834 * Allocate a SCB and initialize mailbox
1836 if (!(scb
= megaraid_alloc_scb(adapter
, scp
))) {
1837 scp
->result
= (DID_ERROR
<< 16);
1842 ccb
= (mbox_ccb_t
*)scb
->ccb
;
1843 scb
->dev_channel
= 0xFF;
1844 scb
->dev_target
= target
;
1845 ccb
->raw_mbox
[0] = CLUSTER_CMD
;
1846 ccb
->raw_mbox
[2] = (scp
->cmnd
[0] == RESERVE
) ?
1847 RESERVE_LD
: RELEASE_LD
;
1849 ccb
->raw_mbox
[3] = target
;
1850 scb
->dma_direction
= scp
->sc_data_direction
;
1855 scp
->result
= (DID_BAD_TARGET
<< 16);
1859 else { // Passthru device commands
1861 // Do not allow access to target id > 15 or LUN > 7
1862 if (target
> 15 || SCP2LUN(scp
) > 7) {
1863 scp
->result
= (DID_BAD_TARGET
<< 16);
1867 // if fast load option was set and scan for last device is
1868 // over, reset the fast_load flag so that during a possible
1869 // next scan, devices can be made available
1870 if (rdev
->fast_load
&& (target
== 15) &&
1871 (SCP2CHANNEL(scp
) == adapter
->max_channel
-1)) {
1873 con_log(CL_ANN
, (KERN_INFO
1874 "megaraid[%d]: physical device scan re-enabled\n",
1875 adapter
->host
->host_no
));
1876 rdev
->fast_load
= 0;
1880 * Display the channel scan for physical devices
1882 if (!(rdev
->last_disp
& (1L << SCP2CHANNEL(scp
)))) {
1884 ss
= rdev
->fast_load
? skip
: scan
;
1886 con_log(CL_ANN
, (KERN_INFO
1887 "scsi[%d]: %s scsi channel %d [Phy %d]",
1888 adapter
->host
->host_no
, ss
, SCP2CHANNEL(scp
),
1892 " for non-raid devices\n"));
1894 rdev
->last_disp
|= (1L << SCP2CHANNEL(scp
));
1897 // disable channel sweep if fast load option given
1898 if (rdev
->fast_load
) {
1899 scp
->result
= (DID_BAD_TARGET
<< 16);
1903 // Allocate a SCB and initialize passthru
1904 if (!(scb
= megaraid_alloc_scb(adapter
, scp
))) {
1905 scp
->result
= (DID_ERROR
<< 16);
1910 ccb
= (mbox_ccb_t
*)scb
->ccb
;
1911 scb
->dev_channel
= channel
;
1912 scb
->dev_target
= target
;
1913 scb
->dma_direction
= scp
->sc_data_direction
;
1915 mbox64
= ccb
->mbox64
;
1917 // Does this firmware support extended CDBs
1918 if (adapter
->max_cdb_sz
== 16) {
1919 mbox
->cmd
= MBOXCMD_EXTPTHRU
;
1921 megaraid_mbox_prepare_epthru(adapter
, scb
, scp
);
1923 mbox64
->xferaddr_lo
= (uint32_t)ccb
->epthru_dma_h
;
1924 mbox64
->xferaddr_hi
= 0;
1925 mbox
->xferaddr
= 0xFFFFFFFF;
1928 mbox
->cmd
= MBOXCMD_PASSTHRU64
;
1930 megaraid_mbox_prepare_pthru(adapter
, scb
, scp
);
1932 mbox64
->xferaddr_lo
= (uint32_t)ccb
->pthru_dma_h
;
1933 mbox64
->xferaddr_hi
= 0;
1934 mbox
->xferaddr
= 0xFFFFFFFF;
1944 * megaraid_mbox_runpendq - execute commands queued in the pending queue
1945 * @adapter : controller's soft state
1946 * @scb_q : SCB to be queued in the pending list
1948 * Scan the pending list for commands which are not yet issued and try to
1949 * post to the controller. The SCB can be a null pointer, which would indicate
1950 * no SCB to be queue, just try to execute the ones in the pending list.
1952 * NOTE: We do not actually traverse the pending list. The SCBs are plucked
1953 * out from the head of the pending list. If it is successfully issued, the
1954 * next SCB is at the head now.
1957 megaraid_mbox_runpendq(adapter_t
*adapter
, scb_t
*scb_q
)
1960 unsigned long flags
;
1962 spin_lock_irqsave(PENDING_LIST_LOCK(adapter
), flags
);
1965 scb_q
->state
= SCB_PENDQ
;
1966 list_add_tail(&scb_q
->list
, &adapter
->pend_list
);
1969 // if the adapter in not in quiescent mode, post the commands to FW
1970 if (adapter
->quiescent
) {
1971 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter
), flags
);
1975 while (!list_empty(&adapter
->pend_list
)) {
1977 assert_spin_locked(PENDING_LIST_LOCK(adapter
));
1979 scb
= list_entry(adapter
->pend_list
.next
, scb_t
, list
);
1981 // remove the scb from the pending list and try to
1982 // issue. If we are unable to issue it, put back in
1983 // the pending list and return
1985 list_del_init(&scb
->list
);
1987 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter
), flags
);
1989 // if mailbox was busy, return SCB back to pending
1990 // list. Make sure to add at the head, since that's
1991 // where it would have been removed from
1993 scb
->state
= SCB_ISSUED
;
1995 if (mbox_post_cmd(adapter
, scb
) != 0) {
1997 spin_lock_irqsave(PENDING_LIST_LOCK(adapter
), flags
);
1999 scb
->state
= SCB_PENDQ
;
2001 list_add(&scb
->list
, &adapter
->pend_list
);
2003 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter
),
2009 spin_lock_irqsave(PENDING_LIST_LOCK(adapter
), flags
);
2012 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter
), flags
);
2020 * megaraid_mbox_prepare_pthru - prepare a command for physical devices
2021 * @adapter : pointer to controller's soft state
2022 * @scb : scsi control block
2023 * @scp : scsi command from the mid-layer
2025 * Prepare a command for the scsi physical devices.
2028 megaraid_mbox_prepare_pthru(adapter_t
*adapter
, scb_t
*scb
,
2029 struct scsi_cmnd
*scp
)
2032 mraid_passthru_t
*pthru
;
2036 ccb
= (mbox_ccb_t
*)scb
->ccb
;
2038 channel
= scb
->dev_channel
;
2039 target
= scb
->dev_target
;
2041 // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout
2044 pthru
->islogical
= 0;
2046 pthru
->target
= (channel
<< 4) | target
;
2047 pthru
->logdrv
= SCP2LUN(scp
);
2048 pthru
->reqsenselen
= 14;
2049 pthru
->cdblen
= scp
->cmd_len
;
2051 memcpy(pthru
->cdb
, scp
->cmnd
, scp
->cmd_len
);
2053 if (scp
->request_bufflen
) {
2054 pthru
->dataxferlen
= scp
->request_bufflen
;
2055 pthru
->dataxferaddr
= ccb
->sgl_dma_h
;
2056 pthru
->numsge
= megaraid_mbox_mksgl(adapter
, scb
);
2059 pthru
->dataxferaddr
= 0;
2060 pthru
->dataxferlen
= 0;
2068 * megaraid_mbox_prepare_epthru - prepare a command for physical devices
2069 * @adapter : pointer to controller's soft state
2070 * @scb : scsi control block
2071 * @scp : scsi command from the mid-layer
2073 * Prepare a command for the scsi physical devices. This rountine prepares
2074 * commands for devices which can take extended CDBs (>10 bytes).
2077 megaraid_mbox_prepare_epthru(adapter_t
*adapter
, scb_t
*scb
,
2078 struct scsi_cmnd
*scp
)
2081 mraid_epassthru_t
*epthru
;
2085 ccb
= (mbox_ccb_t
*)scb
->ccb
;
2086 epthru
= ccb
->epthru
;
2087 channel
= scb
->dev_channel
;
2088 target
= scb
->dev_target
;
2090 // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout
2091 epthru
->timeout
= 4;
2093 epthru
->islogical
= 0;
2094 epthru
->channel
= 0;
2095 epthru
->target
= (channel
<< 4) | target
;
2096 epthru
->logdrv
= SCP2LUN(scp
);
2097 epthru
->reqsenselen
= 14;
2098 epthru
->cdblen
= scp
->cmd_len
;
2100 memcpy(epthru
->cdb
, scp
->cmnd
, scp
->cmd_len
);
2102 if (scp
->request_bufflen
) {
2103 epthru
->dataxferlen
= scp
->request_bufflen
;
2104 epthru
->dataxferaddr
= ccb
->sgl_dma_h
;
2105 epthru
->numsge
= megaraid_mbox_mksgl(adapter
, scb
);
2108 epthru
->dataxferaddr
= 0;
2109 epthru
->dataxferlen
= 0;
2117 * megaraid_ack_sequence - interrupt ack sequence for memory mapped HBAs
2118 * @adapter : controller's soft state
2120 * Interrupt acknowledgement sequence for memory mapped HBAs. Find out the
2121 * completed command and put them on the completed list for later processing.
2123 * Returns: 1 if the interrupt is valid, 0 otherwise
2126 megaraid_ack_sequence(adapter_t
*adapter
)
2128 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
2132 uint8_t completed
[MBOX_MAX_FIRMWARE_STATUS
];
2133 struct list_head clist
;
2136 unsigned long flags
;
2140 mbox
= raid_dev
->mbox
;
2142 // move the SCBs from the firmware completed array to our local list
2143 INIT_LIST_HEAD(&clist
);
2145 // loop till F/W has more commands for us to complete
2147 spin_lock_irqsave(MAILBOX_LOCK(raid_dev
), flags
);
2150 * Check if a valid interrupt is pending. If found, force the
2151 * interrupt line low.
2153 dword
= RDOUTDOOR(raid_dev
);
2154 if (dword
!= 0x10001234) break;
2158 WROUTDOOR(raid_dev
, 0x10001234);
2161 // wait for valid numstatus to post
2162 for (i
= 0; i
< 0xFFFFF; i
++) {
2163 if (mbox
->numstatus
!= 0xFF) {
2164 nstatus
= mbox
->numstatus
;
2169 mbox
->numstatus
= 0xFF;
2171 adapter
->outstanding_cmds
-= nstatus
;
2173 for (i
= 0; i
< nstatus
; i
++) {
2175 // wait for valid command index to post
2176 for (j
= 0; j
< 0xFFFFF; j
++) {
2177 if (mbox
->completed
[i
] != 0xFF) break;
2180 completed
[i
] = mbox
->completed
[i
];
2181 mbox
->completed
[i
] = 0xFF;
2183 if (completed
[i
] == 0xFF) {
2184 con_log(CL_ANN
, (KERN_CRIT
2185 "megaraid: command posting timed out\n"));
2191 // Get SCB associated with this command id
2192 if (completed
[i
] >= MBOX_MAX_SCSI_CMDS
) {
2194 scb
= adapter
->uscb_list
+ (completed
[i
] -
2195 MBOX_MAX_SCSI_CMDS
);
2199 scb
= adapter
->kscb_list
+ completed
[i
];
2202 scb
->status
= mbox
->status
;
2203 list_add_tail(&scb
->list
, &clist
);
2206 // Acknowledge interrupt
2207 WRINDOOR(raid_dev
, 0x02);
2211 spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev
), flags
);
2214 // put the completed commands in the completed list. DPC would
2215 // complete these commands later
2216 spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter
), flags
);
2218 list_splice(&clist
, &adapter
->completed_list
);
2220 spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter
), flags
);
2223 // schedule the DPC if there is some work for it
2225 tasklet_schedule(&adapter
->dpc_h
);
2232 * megaraid_isr - isr for memory based mailbox based controllers
2234 * @devp : pointer to our soft state
2236 * Interrupt service routine for memory-mapped mailbox controllers.
2239 megaraid_isr(int irq
, void *devp
)
2241 adapter_t
*adapter
= devp
;
2244 handled
= megaraid_ack_sequence(adapter
);
2246 /* Loop through any pending requests */
2247 if (!adapter
->quiescent
) {
2248 megaraid_mbox_runpendq(adapter
, NULL
);
2251 return IRQ_RETVAL(handled
);
2256 * megaraid_mbox_sync_scb - sync kernel buffers
2257 * @adapter : controller's soft state
2258 * @scb : pointer to the resource packet
2260 * DMA sync if required.
2263 megaraid_mbox_sync_scb(adapter_t
*adapter
, scb_t
*scb
)
2267 ccb
= (mbox_ccb_t
*)scb
->ccb
;
2269 switch (scb
->dma_type
) {
2271 case MRAID_DMA_WBUF
:
2272 if (scb
->dma_direction
== PCI_DMA_FROMDEVICE
) {
2273 pci_dma_sync_single_for_cpu(adapter
->pdev
,
2275 scb
->scp
->request_bufflen
,
2276 PCI_DMA_FROMDEVICE
);
2279 pci_unmap_page(adapter
->pdev
, ccb
->buf_dma_h
,
2280 scb
->scp
->request_bufflen
, scb
->dma_direction
);
2285 if (scb
->dma_direction
== PCI_DMA_FROMDEVICE
) {
2286 pci_dma_sync_sg_for_cpu(adapter
->pdev
,
2287 scb
->scp
->request_buffer
,
2288 scb
->scp
->use_sg
, PCI_DMA_FROMDEVICE
);
2291 pci_unmap_sg(adapter
->pdev
, scb
->scp
->request_buffer
,
2292 scb
->scp
->use_sg
, scb
->dma_direction
);
2305 * megaraid_mbox_dpc - the tasklet to complete the commands from completed list
2306 * @devp : pointer to HBA soft state
2308 * Pick up the commands from the completed list and send back to the owners.
2309 * This is a reentrant function and does not assume any locks are held while
2310 * it is being called.
2313 megaraid_mbox_dpc(unsigned long devp
)
2315 adapter_t
*adapter
= (adapter_t
*)devp
;
2316 mraid_device_t
*raid_dev
;
2317 struct list_head clist
;
2318 struct scatterlist
*sgl
;
2321 struct scsi_cmnd
*scp
;
2322 mraid_passthru_t
*pthru
;
2323 mraid_epassthru_t
*epthru
;
2329 unsigned long flags
;
2335 if (!adapter
) return;
2337 raid_dev
= ADAP2RAIDDEV(adapter
);
2339 // move the SCBs from the completed list to our local list
2340 INIT_LIST_HEAD(&clist
);
2342 spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter
), flags
);
2344 list_splice_init(&adapter
->completed_list
, &clist
);
2346 spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter
), flags
);
2349 list_for_each_entry_safe(scb
, tmp
, &clist
, list
) {
2351 status
= scb
->status
;
2353 ccb
= (mbox_ccb_t
*)scb
->ccb
;
2355 epthru
= ccb
->epthru
;
2358 // Make sure f/w has completed a valid command
2359 if (scb
->state
!= SCB_ISSUED
) {
2360 con_log(CL_ANN
, (KERN_CRIT
2361 "megaraid critical err: invalid command %d:%d:%p\n",
2362 scb
->sno
, scb
->state
, scp
));
2364 continue; // Must never happen!
2367 // check for the management command and complete it right away
2368 if (scb
->sno
>= MBOX_MAX_SCSI_CMDS
) {
2369 scb
->state
= SCB_FREE
;
2370 scb
->status
= status
;
2372 // remove from local clist
2373 list_del_init(&scb
->list
);
2375 kioc
= (uioc_t
*)scb
->gp
;
2378 megaraid_mbox_mm_done(adapter
, scb
);
2383 // Was an abort issued for this command earlier
2384 if (scb
->state
& SCB_ABORT
) {
2385 con_log(CL_ANN
, (KERN_NOTICE
2386 "megaraid: aborted cmd %lx[%x] completed\n",
2387 scp
->serial_number
, scb
->sno
));
2391 * If the inquiry came of a disk drive which is not part of
2392 * any RAID array, expose it to the kernel. For this to be
2393 * enabled, user must set the "megaraid_expose_unconf_disks"
2394 * flag to 1 by specifying it on module parameter list.
2395 * This would enable data migration off drives from other
2398 islogical
= MRAID_IS_LOGICAL(adapter
, scp
);
2399 if (scp
->cmnd
[0] == INQUIRY
&& status
== 0 && islogical
== 0
2400 && IS_RAID_CH(raid_dev
, scb
->dev_channel
)) {
2403 sgl
= (struct scatterlist
*)
2404 scp
->request_buffer
;
2407 c
= *(unsigned char *)
2408 (page_address((&sgl
[0])->page
) +
2412 con_log(CL_ANN
, (KERN_WARNING
2413 "megaraid mailbox: invalid sg:%d\n",
2419 c
= *(uint8_t *)scp
->request_buffer
;
2422 if ((c
& 0x1F ) == TYPE_DISK
) {
2423 pdev_index
= (scb
->dev_channel
* 16) +
2426 raid_dev
->pdrv_state
[pdev_index
] & 0x0F;
2428 if (pdev_state
== PDRV_ONLINE
||
2429 pdev_state
== PDRV_FAILED
||
2430 pdev_state
== PDRV_RBLD
||
2431 pdev_state
== PDRV_HOTSPARE
||
2432 megaraid_expose_unconf_disks
== 0) {
2439 // Convert MegaRAID status to Linux error code
2444 scp
->result
= (DID_OK
<< 16);
2449 /* set sense_buffer and result fields */
2450 if (mbox
->cmd
== MBOXCMD_PASSTHRU
||
2451 mbox
->cmd
== MBOXCMD_PASSTHRU64
) {
2453 memcpy(scp
->sense_buffer
, pthru
->reqsensearea
,
2456 scp
->result
= DRIVER_SENSE
<< 24 |
2457 DID_OK
<< 16 | CHECK_CONDITION
<< 1;
2460 if (mbox
->cmd
== MBOXCMD_EXTPTHRU
) {
2462 memcpy(scp
->sense_buffer
,
2463 epthru
->reqsensearea
, 14);
2465 scp
->result
= DRIVER_SENSE
<< 24 |
2467 CHECK_CONDITION
<< 1;
2469 scp
->sense_buffer
[0] = 0x70;
2470 scp
->sense_buffer
[2] = ABORTED_COMMAND
;
2471 scp
->result
= CHECK_CONDITION
<< 1;
2478 scp
->result
= DID_BUS_BUSY
<< 16 | status
;
2484 * If TEST_UNIT_READY fails, we know RESERVATION_STATUS
2487 if (scp
->cmnd
[0] == TEST_UNIT_READY
) {
2488 scp
->result
= DID_ERROR
<< 16 |
2489 RESERVATION_CONFLICT
<< 1;
2493 * Error code returned is 1 if Reserve or Release
2494 * failed or the input parameter is invalid
2496 if (status
== 1 && (scp
->cmnd
[0] == RESERVE
||
2497 scp
->cmnd
[0] == RELEASE
)) {
2499 scp
->result
= DID_ERROR
<< 16 |
2500 RESERVATION_CONFLICT
<< 1;
2503 scp
->result
= DID_BAD_TARGET
<< 16 | status
;
2507 // print a debug message for all failed commands
2509 megaraid_mbox_display_scb(adapter
, scb
);
2512 // Free our internal resources and call the mid-layer callback
2514 megaraid_mbox_sync_scb(adapter
, scb
);
2516 // remove from local clist
2517 list_del_init(&scb
->list
);
2519 // put back in free list
2520 megaraid_dealloc_scb(adapter
, scb
);
2522 // send the scsi packet back to kernel
2523 scp
->scsi_done(scp
);
2531 * megaraid_abort_handler - abort the scsi command
2532 * @scp : command to be aborted
2534 * Abort a previous SCSI request. Only commands on the pending list can be
2535 * aborted. All the commands issued to the F/W must complete.
2538 megaraid_abort_handler(struct scsi_cmnd
*scp
)
2541 mraid_device_t
*raid_dev
;
2545 unsigned long flags
;
2549 adapter
= SCP2ADAPTER(scp
);
2550 raid_dev
= ADAP2RAIDDEV(adapter
);
2552 con_log(CL_ANN
, (KERN_WARNING
2553 "megaraid: aborting-%ld cmd=%x <c=%d t=%d l=%d>\n",
2554 scp
->serial_number
, scp
->cmnd
[0], SCP2CHANNEL(scp
),
2555 SCP2TARGET(scp
), SCP2LUN(scp
)));
2557 // If FW has stopped responding, simply return failure
2558 if (raid_dev
->hw_error
) {
2559 con_log(CL_ANN
, (KERN_NOTICE
2560 "megaraid: hw error, not aborting\n"));
2564 // There might a race here, where the command was completed by the
2565 // firmware and now it is on the completed list. Before we could
2566 // complete the command to the kernel in dpc, the abort came.
2567 // Find out if this is the case to avoid the race.
2569 spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter
), flags
);
2570 list_for_each_entry_safe(scb
, tmp
, &adapter
->completed_list
, list
) {
2572 if (scb
->scp
== scp
) { // Found command
2574 list_del_init(&scb
->list
); // from completed list
2576 con_log(CL_ANN
, (KERN_WARNING
2577 "megaraid: %ld:%d[%d:%d], abort from completed list\n",
2578 scp
->serial_number
, scb
->sno
,
2579 scb
->dev_channel
, scb
->dev_target
));
2581 scp
->result
= (DID_ABORT
<< 16);
2582 scp
->scsi_done(scp
);
2584 megaraid_dealloc_scb(adapter
, scb
);
2586 spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter
),
2592 spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter
), flags
);
2595 // Find out if this command is still on the pending list. If it is and
2596 // was never issued, abort and return success. If the command is owned
2597 // by the firmware, we must wait for it to complete by the FW.
2598 spin_lock_irqsave(PENDING_LIST_LOCK(adapter
), flags
);
2599 list_for_each_entry_safe(scb
, tmp
, &adapter
->pend_list
, list
) {
2601 if (scb
->scp
== scp
) { // Found command
2603 list_del_init(&scb
->list
); // from pending list
2605 ASSERT(!(scb
->state
& SCB_ISSUED
));
2607 con_log(CL_ANN
, (KERN_WARNING
2608 "megaraid abort: %ld[%d:%d], driver owner\n",
2609 scp
->serial_number
, scb
->dev_channel
,
2612 scp
->result
= (DID_ABORT
<< 16);
2613 scp
->scsi_done(scp
);
2615 megaraid_dealloc_scb(adapter
, scb
);
2617 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter
),
2623 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter
), flags
);
2626 // Check do we even own this command, in which case this would be
2627 // owned by the firmware. The only way to locate the FW scb is to
2628 // traverse through the list of all SCB, since driver does not
2629 // maintain these SCBs on any list
2631 spin_lock_irq(&adapter
->lock
);
2632 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
; i
++) {
2633 scb
= adapter
->kscb_list
+ i
;
2635 if (scb
->scp
== scp
) {
2639 if (!(scb
->state
& SCB_ISSUED
)) {
2640 con_log(CL_ANN
, (KERN_WARNING
2641 "megaraid abort: %ld%d[%d:%d], invalid state\n",
2642 scp
->serial_number
, scb
->sno
, scb
->dev_channel
,
2647 con_log(CL_ANN
, (KERN_WARNING
2648 "megaraid abort: %ld:%d[%d:%d], fw owner\n",
2649 scp
->serial_number
, scb
->sno
, scb
->dev_channel
,
2654 spin_unlock_irq(&adapter
->lock
);
2657 con_log(CL_ANN
, (KERN_WARNING
2658 "megaraid abort: scsi cmd:%ld, do now own\n",
2659 scp
->serial_number
));
2661 // FIXME: Should there be a callback for this command?
2665 // We cannot actually abort a command owned by firmware, return
2666 // failure and wait for reset. In host reset handler, we will find out
2667 // if the HBA is still live
2672 * megaraid_reset_handler - device reset hadler for mailbox based driver
2673 * @scp : reference command
2675 * Reset handler for the mailbox based controller. First try to find out if
2676 * the FW is still live, in which case the outstanding commands counter mut go
2677 * down to 0. If that happens, also issue the reservation reset command to
2678 * relinquish (possible) reservations on the logical drives connected to this
2682 megaraid_reset_handler(struct scsi_cmnd
*scp
)
2687 mraid_device_t
*raid_dev
;
2688 unsigned long flags
;
2689 uint8_t raw_mbox
[sizeof(mbox_t
)];
2691 int recovery_window
;
2696 adapter
= SCP2ADAPTER(scp
);
2697 raid_dev
= ADAP2RAIDDEV(adapter
);
2699 // return failure if adapter is not responding
2700 if (raid_dev
->hw_error
) {
2701 con_log(CL_ANN
, (KERN_NOTICE
2702 "megaraid: hw error, cannot reset\n"));
2707 // Under exceptional conditions, FW can take up to 3 minutes to
2708 // complete command processing. Wait for additional 2 minutes for the
2709 // pending commands counter to go down to 0. If it doesn't, let the
2710 // controller be marked offline
2711 // Also, reset all the commands currently owned by the driver
2712 spin_lock_irqsave(PENDING_LIST_LOCK(adapter
), flags
);
2713 list_for_each_entry_safe(scb
, tmp
, &adapter
->pend_list
, list
) {
2714 list_del_init(&scb
->list
); // from pending list
2716 if (scb
->sno
>= MBOX_MAX_SCSI_CMDS
) {
2717 con_log(CL_ANN
, (KERN_WARNING
2718 "megaraid: IOCTL packet with %d[%d:%d] being reset\n",
2719 scb
->sno
, scb
->dev_channel
, scb
->dev_target
));
2723 kioc
= (uioc_t
*)scb
->gp
;
2724 kioc
->status
= -EFAULT
;
2726 megaraid_mbox_mm_done(adapter
, scb
);
2728 if (scb
->scp
== scp
) { // Found command
2729 con_log(CL_ANN
, (KERN_WARNING
2730 "megaraid: %ld:%d[%d:%d], reset from pending list\n",
2731 scp
->serial_number
, scb
->sno
,
2732 scb
->dev_channel
, scb
->dev_target
));
2734 con_log(CL_ANN
, (KERN_WARNING
2735 "megaraid: IO packet with %d[%d:%d] being reset\n",
2736 scb
->sno
, scb
->dev_channel
, scb
->dev_target
));
2739 scb
->scp
->result
= (DID_RESET
<< 16);
2740 scb
->scp
->scsi_done(scb
->scp
);
2742 megaraid_dealloc_scb(adapter
, scb
);
2745 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter
), flags
);
2747 if (adapter
->outstanding_cmds
) {
2748 con_log(CL_ANN
, (KERN_NOTICE
2749 "megaraid: %d outstanding commands. Max wait %d sec\n",
2750 adapter
->outstanding_cmds
,
2751 (MBOX_RESET_WAIT
+ MBOX_RESET_EXT_WAIT
)));
2754 recovery_window
= MBOX_RESET_WAIT
+ MBOX_RESET_EXT_WAIT
;
2756 recovering
= adapter
->outstanding_cmds
;
2758 for (i
= 0; i
< recovery_window
; i
++) {
2760 megaraid_ack_sequence(adapter
);
2762 // print a message once every 5 seconds only
2765 "megaraid mbox: Wait for %d commands to complete:%d\n",
2766 adapter
->outstanding_cmds
,
2767 (MBOX_RESET_WAIT
+ MBOX_RESET_EXT_WAIT
) - i
));
2770 // bailout if no recovery happended in reset time
2771 if (adapter
->outstanding_cmds
== 0) {
2778 spin_lock(&adapter
->lock
);
2780 // If still outstanding commands, bail out
2781 if (adapter
->outstanding_cmds
) {
2782 con_log(CL_ANN
, (KERN_WARNING
2783 "megaraid mbox: critical hardware error!\n"));
2785 raid_dev
->hw_error
= 1;
2791 con_log(CL_ANN
, (KERN_NOTICE
2792 "megaraid mbox: reset sequence completed sucessfully\n"));
2796 // If the controller supports clustering, reset reservations
2802 // clear reservations if any
2803 raw_mbox
[0] = CLUSTER_CMD
;
2804 raw_mbox
[2] = RESET_RESERVATIONS
;
2807 if (mbox_post_sync_cmd_fast(adapter
, raw_mbox
) == 0) {
2809 (KERN_INFO
"megaraid: reservation reset\n"));
2813 con_log(CL_ANN
, (KERN_WARNING
2814 "megaraid: reservation reset failed\n"));
2818 spin_unlock_irq(&adapter
->lock
);
2823 * START: internal commands library
2825 * This section of the driver has the common routine used by the driver and
2826 * also has all the FW routines
2830 * mbox_post_sync_cmd() - blocking command to the mailbox based controllers
2831 * @adapter : controller's soft state
2832 * @raw_mbox : the mailbox
2834 * Issue a scb in synchronous and non-interrupt mode for mailbox based
2838 mbox_post_sync_cmd(adapter_t
*adapter
, uint8_t raw_mbox
[])
2840 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
2847 mbox64
= raid_dev
->mbox64
;
2848 mbox
= raid_dev
->mbox
;
2851 * Wait until mailbox is free
2853 if (megaraid_busywait_mbox(raid_dev
) != 0)
2854 goto blocked_mailbox
;
2857 * Copy mailbox data into host structure
2859 memcpy((caddr_t
)mbox
, (caddr_t
)raw_mbox
, 16);
2864 mbox
->numstatus
= 0xFF;
2865 mbox
->status
= 0xFF;
2868 WRINDOOR(raid_dev
, raid_dev
->mbox_dma
| 0x1);
2870 // wait for maximum 1 second for status to post. If the status is not
2871 // available within 1 second, assume FW is initializing and wait
2872 // for an extended amount of time
2873 if (mbox
->numstatus
== 0xFF) { // status not yet available
2876 for (i
= 0; mbox
->numstatus
== 0xFF && i
< 1000; i
++) {
2883 con_log(CL_ANN
, (KERN_NOTICE
2884 "megaraid mailbox: wait for FW to boot "));
2886 for (i
= 0; (mbox
->numstatus
== 0xFF) &&
2887 (i
< MBOX_RESET_WAIT
); i
++) {
2889 con_log(CL_ANN
, ("\b\b\b\b\b[%03d]",
2890 MBOX_RESET_WAIT
- i
));
2894 if (i
== MBOX_RESET_WAIT
) {
2897 "\nmegaraid mailbox: status not available\n"));
2901 con_log(CL_ANN
, ("\b\b\b\b\b[ok] \n"));
2905 // wait for maximum 1 second for poll semaphore
2906 if (mbox
->poll
!= 0x77) {
2909 for (i
= 0; (mbox
->poll
!= 0x77) && (i
< 1000); i
++) {
2915 con_log(CL_ANN
, (KERN_WARNING
2916 "megaraid mailbox: could not get poll semaphore\n"));
2921 WRINDOOR(raid_dev
, raid_dev
->mbox_dma
| 0x2);
2924 // wait for maximum 1 second for acknowledgement
2925 if (RDINDOOR(raid_dev
) & 0x2) {
2928 for (i
= 0; (RDINDOOR(raid_dev
) & 0x2) && (i
< 1000); i
++) {
2934 con_log(CL_ANN
, (KERN_WARNING
2935 "megaraid mailbox: could not acknowledge\n"));
2942 status
= mbox
->status
;
2944 // invalidate the completed command id array. After command
2945 // completion, firmware would write the valid id.
2946 mbox
->numstatus
= 0xFF;
2947 mbox
->status
= 0xFF;
2948 for (i
= 0; i
< MBOX_MAX_FIRMWARE_STATUS
; i
++) {
2949 mbox
->completed
[i
] = 0xFF;
2956 con_log(CL_ANN
, (KERN_WARNING
"megaraid: blocked mailbox\n") );
2962 * mbox_post_sync_cmd_fast - blocking command to the mailbox based controllers
2963 * @adapter : controller's soft state
2964 * @raw_mbox : the mailbox
2966 * Issue a scb in synchronous and non-interrupt mode for mailbox based
2967 * controllers. This is a faster version of the synchronous command and
2968 * therefore can be called in interrupt-context as well.
2971 mbox_post_sync_cmd_fast(adapter_t
*adapter
, uint8_t raw_mbox
[])
2973 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
2978 mbox
= raid_dev
->mbox
;
2980 // return immediately if the mailbox is busy
2981 if (mbox
->busy
) return -1;
2983 // Copy mailbox data into host structure
2984 memcpy((caddr_t
)mbox
, (caddr_t
)raw_mbox
, 14);
2989 mbox
->numstatus
= 0xFF;
2990 mbox
->status
= 0xFF;
2993 WRINDOOR(raid_dev
, raid_dev
->mbox_dma
| 0x1);
2995 for (i
= 0; i
< MBOX_SYNC_WAIT_CNT
; i
++) {
2996 if (mbox
->numstatus
!= 0xFF) break;
2998 udelay(MBOX_SYNC_DELAY_200
);
3001 if (i
== MBOX_SYNC_WAIT_CNT
) {
3002 // We may need to re-calibrate the counter
3003 con_log(CL_ANN
, (KERN_CRIT
3004 "megaraid: fast sync command timed out\n"));
3007 WRINDOOR(raid_dev
, raid_dev
->mbox_dma
| 0x2);
3010 return mbox
->status
;
3015 * megaraid_busywait_mbox() - Wait until the controller's mailbox is available
3016 * @raid_dev : RAID device (HBA) soft state
3018 * Wait until the controller's mailbox is available to accept more commands.
3019 * Wait for at most 1 second.
3022 megaraid_busywait_mbox(mraid_device_t
*raid_dev
)
3024 mbox_t
*mbox
= raid_dev
->mbox
;
3029 for (i
= 0; mbox
->busy
&& i
< 1000; i
++)
3033 if (i
< 1000) return 0;
3039 * megaraid_mbox_product_info - some static information about the controller
3040 * @adapter : our soft state
3042 * Issue commands to the controller to grab some parameters required by our
3046 megaraid_mbox_product_info(adapter_t
*adapter
)
3048 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
3050 uint8_t raw_mbox
[sizeof(mbox_t
)];
3051 mraid_pinfo_t
*pinfo
;
3052 dma_addr_t pinfo_dma_h
;
3053 mraid_inquiry3_t
*mraid_inq3
;
3057 memset((caddr_t
)raw_mbox
, 0, sizeof(raw_mbox
));
3058 mbox
= (mbox_t
*)raw_mbox
;
3061 * Issue an ENQUIRY3 command to find out certain adapter parameters,
3062 * e.g., max channels, max commands etc.
3064 pinfo
= pci_alloc_consistent(adapter
->pdev
, sizeof(mraid_pinfo_t
),
3067 if (pinfo
== NULL
) {
3068 con_log(CL_ANN
, (KERN_WARNING
3069 "megaraid: out of memory, %s %d\n", __FUNCTION__
,
3074 memset(pinfo
, 0, sizeof(mraid_pinfo_t
));
3076 mbox
->xferaddr
= (uint32_t)adapter
->ibuf_dma_h
;
3077 memset((void *)adapter
->ibuf
, 0, MBOX_IBUF_SIZE
);
3079 raw_mbox
[0] = FC_NEW_CONFIG
;
3080 raw_mbox
[2] = NC_SUBOP_ENQUIRY3
;
3081 raw_mbox
[3] = ENQ3_GET_SOLICITED_FULL
;
3083 // Issue the command
3084 if (mbox_post_sync_cmd(adapter
, raw_mbox
) != 0) {
3086 con_log(CL_ANN
, (KERN_WARNING
"megaraid: Inquiry3 failed\n"));
3088 pci_free_consistent(adapter
->pdev
, sizeof(mraid_pinfo_t
),
3089 pinfo
, pinfo_dma_h
);
3095 * Collect information about state of each physical drive
3096 * attached to the controller. We will expose all the disks
3097 * which are not part of RAID
3099 mraid_inq3
= (mraid_inquiry3_t
*)adapter
->ibuf
;
3100 for (i
= 0; i
< MBOX_MAX_PHYSICAL_DRIVES
; i
++) {
3101 raid_dev
->pdrv_state
[i
] = mraid_inq3
->pdrv_state
[i
];
3105 * Get product info for information like number of channels,
3106 * maximum commands supported.
3108 memset((caddr_t
)raw_mbox
, 0, sizeof(raw_mbox
));
3109 mbox
->xferaddr
= (uint32_t)pinfo_dma_h
;
3111 raw_mbox
[0] = FC_NEW_CONFIG
;
3112 raw_mbox
[2] = NC_SUBOP_PRODUCT_INFO
;
3114 if (mbox_post_sync_cmd(adapter
, raw_mbox
) != 0) {
3116 con_log(CL_ANN
, (KERN_WARNING
3117 "megaraid: product info failed\n"));
3119 pci_free_consistent(adapter
->pdev
, sizeof(mraid_pinfo_t
),
3120 pinfo
, pinfo_dma_h
);
3126 * Setup some parameters for host, as required by our caller
3128 adapter
->max_channel
= pinfo
->nchannels
;
3131 * we will export all the logical drives on a single channel.
3132 * Add 1 since inquires do not come for inititor ID
3134 adapter
->max_target
= MAX_LOGICAL_DRIVES_40LD
+ 1;
3135 adapter
->max_lun
= 8; // up to 8 LUNs for non-disk devices
3138 * These are the maximum outstanding commands for the scsi-layer
3140 adapter
->max_cmds
= MBOX_MAX_SCSI_CMDS
;
3142 memset(adapter
->fw_version
, 0, VERSION_SIZE
);
3143 memset(adapter
->bios_version
, 0, VERSION_SIZE
);
3145 memcpy(adapter
->fw_version
, pinfo
->fw_version
, 4);
3146 adapter
->fw_version
[4] = 0;
3148 memcpy(adapter
->bios_version
, pinfo
->bios_version
, 4);
3149 adapter
->bios_version
[4] = 0;
3151 con_log(CL_ANN
, (KERN_NOTICE
3152 "megaraid: fw version:[%s] bios version:[%s]\n",
3153 adapter
->fw_version
, adapter
->bios_version
));
3155 pci_free_consistent(adapter
->pdev
, sizeof(mraid_pinfo_t
), pinfo
,
3164 * megaraid_mbox_extended_cdb - check for support for extended CDBs
3165 * @adapter : soft state for the controller
3167 * This routine check whether the controller in question supports extended
3168 * ( > 10 bytes ) CDBs.
3171 megaraid_mbox_extended_cdb(adapter_t
*adapter
)
3174 uint8_t raw_mbox
[sizeof(mbox_t
)];
3177 mbox
= (mbox_t
*)raw_mbox
;
3179 memset((caddr_t
)raw_mbox
, 0, sizeof(raw_mbox
));
3180 mbox
->xferaddr
= (uint32_t)adapter
->ibuf_dma_h
;
3182 memset((void *)adapter
->ibuf
, 0, MBOX_IBUF_SIZE
);
3184 raw_mbox
[0] = MAIN_MISC_OPCODE
;
3185 raw_mbox
[2] = SUPPORT_EXT_CDB
;
3191 if (mbox_post_sync_cmd(adapter
, raw_mbox
) != 0) {
3200 * megaraid_mbox_support_ha - Do we support clustering
3201 * @adapter : soft state for the controller
3202 * @init_id : ID of the initiator
3204 * Determine if the firmware supports clustering and the ID of the initiator.
3207 megaraid_mbox_support_ha(adapter_t
*adapter
, uint16_t *init_id
)
3210 uint8_t raw_mbox
[sizeof(mbox_t
)];
3214 mbox
= (mbox_t
*)raw_mbox
;
3216 memset((caddr_t
)raw_mbox
, 0, sizeof(raw_mbox
));
3218 mbox
->xferaddr
= (uint32_t)adapter
->ibuf_dma_h
;
3220 memset((void *)adapter
->ibuf
, 0, MBOX_IBUF_SIZE
);
3222 raw_mbox
[0] = GET_TARGET_ID
;
3224 // Issue the command
3227 if (mbox_post_sync_cmd(adapter
, raw_mbox
) == 0) {
3229 *init_id
= *(uint8_t *)adapter
->ibuf
;
3231 con_log(CL_ANN
, (KERN_INFO
3232 "megaraid: cluster firmware, initiator ID: %d\n",
3243 * megaraid_mbox_support_random_del - Do we support random deletion
3244 * @adapter : soft state for the controller
3246 * Determine if the firmware supports random deletion.
3247 * Return: 1 is operation supported, 0 otherwise
3250 megaraid_mbox_support_random_del(adapter_t
*adapter
)
3253 uint8_t raw_mbox
[sizeof(mbox_t
)];
3257 mbox
= (mbox_t
*)raw_mbox
;
3259 memset((caddr_t
)raw_mbox
, 0, sizeof(mbox_t
));
3261 raw_mbox
[0] = FC_DEL_LOGDRV
;
3262 raw_mbox
[2] = OP_SUP_DEL_LOGDRV
;
3264 // Issue the command
3266 if (mbox_post_sync_cmd(adapter
, raw_mbox
) == 0) {
3268 con_log(CL_DLEVEL1
, ("megaraid: supports random deletion\n"));
3278 * megaraid_mbox_get_max_sg - maximum sg elements supported by the firmware
3279 * @adapter : soft state for the controller
3281 * Find out the maximum number of scatter-gather elements supported by the
3285 megaraid_mbox_get_max_sg(adapter_t
*adapter
)
3288 uint8_t raw_mbox
[sizeof(mbox_t
)];
3292 mbox
= (mbox_t
*)raw_mbox
;
3294 memset((caddr_t
)raw_mbox
, 0, sizeof(mbox_t
));
3296 mbox
->xferaddr
= (uint32_t)adapter
->ibuf_dma_h
;
3298 memset((void *)adapter
->ibuf
, 0, MBOX_IBUF_SIZE
);
3300 raw_mbox
[0] = MAIN_MISC_OPCODE
;
3301 raw_mbox
[2] = GET_MAX_SG_SUPPORT
;
3303 // Issue the command
3304 if (mbox_post_sync_cmd(adapter
, raw_mbox
) == 0) {
3305 nsg
= *(uint8_t *)adapter
->ibuf
;
3308 nsg
= MBOX_DEFAULT_SG_SIZE
;
3311 if (nsg
> MBOX_MAX_SG_SIZE
) nsg
= MBOX_MAX_SG_SIZE
;
3318 * megaraid_mbox_enum_raid_scsi - enumerate the RAID and SCSI channels
3319 * @adapter : soft state for the controller
3321 * Enumerate the RAID and SCSI channels for ROMB platforms so that channels
3322 * can be exported as regular SCSI channels.
3325 megaraid_mbox_enum_raid_scsi(adapter_t
*adapter
)
3327 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
3329 uint8_t raw_mbox
[sizeof(mbox_t
)];
3332 mbox
= (mbox_t
*)raw_mbox
;
3334 memset((caddr_t
)raw_mbox
, 0, sizeof(mbox_t
));
3336 mbox
->xferaddr
= (uint32_t)adapter
->ibuf_dma_h
;
3338 memset((void *)adapter
->ibuf
, 0, MBOX_IBUF_SIZE
);
3340 raw_mbox
[0] = CHNL_CLASS
;
3341 raw_mbox
[2] = GET_CHNL_CLASS
;
3343 // Issue the command. If the command fails, all channels are RAID
3345 raid_dev
->channel_class
= 0xFF;
3346 if (mbox_post_sync_cmd(adapter
, raw_mbox
) == 0) {
3347 raid_dev
->channel_class
= *(uint8_t *)adapter
->ibuf
;
3355 * megaraid_mbox_flush_cache - flush adapter and disks cache
3356 * @adapter : soft state for the controller
3358 * Flush adapter cache followed by disks cache.
3361 megaraid_mbox_flush_cache(adapter_t
*adapter
)
3364 uint8_t raw_mbox
[sizeof(mbox_t
)];
3367 mbox
= (mbox_t
*)raw_mbox
;
3369 memset((caddr_t
)raw_mbox
, 0, sizeof(mbox_t
));
3371 raw_mbox
[0] = FLUSH_ADAPTER
;
3373 if (mbox_post_sync_cmd(adapter
, raw_mbox
) != 0) {
3374 con_log(CL_ANN
, ("megaraid: flush adapter failed\n"));
3377 raw_mbox
[0] = FLUSH_SYSTEM
;
3379 if (mbox_post_sync_cmd(adapter
, raw_mbox
) != 0) {
3380 con_log(CL_ANN
, ("megaraid: flush disks cache failed\n"));
3388 * megaraid_mbox_fire_sync_cmd - fire the sync cmd
3389 * @adapter : soft state for the controller
3391 * Clears the pending cmds in FW and reinits its RAID structs.
3394 megaraid_mbox_fire_sync_cmd(adapter_t
*adapter
)
3397 uint8_t raw_mbox
[sizeof(mbox_t
)];
3398 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
3404 mbox
= (mbox_t
*)raw_mbox
;
3406 memset((caddr_t
)raw_mbox
, 0, sizeof(mbox_t
));
3410 mbox64
= raid_dev
->mbox64
;
3411 mbox
= raid_dev
->mbox
;
3413 /* Wait until mailbox is free */
3414 if (megaraid_busywait_mbox(raid_dev
) != 0) {
3416 goto blocked_mailbox
;
3419 /* Copy mailbox data into host structure */
3420 memcpy((caddr_t
)mbox
, (caddr_t
)raw_mbox
, 16);
3425 mbox
->numstatus
= 0;
3429 WRINDOOR(raid_dev
, raid_dev
->mbox_dma
| 0x1);
3431 /* Wait for maximum 1 min for status to post.
3432 * If the Firmware SUPPORTS the ABOVE COMMAND,
3433 * mbox->cmd will be set to 0
3435 * the firmware will reject the command with
3436 * mbox->numstatus set to 1
3441 while (!mbox
->numstatus
&& mbox
->cmd
== 0xFF) {
3445 if (i
> 1000 * 60) {
3450 if (mbox
->numstatus
== 1)
3451 status
= 1; /*cmd not supported*/
3453 /* Check for interrupt line */
3454 dword
= RDOUTDOOR(raid_dev
);
3455 WROUTDOOR(raid_dev
, dword
);
3456 WRINDOOR(raid_dev
,2);
3461 con_log(CL_ANN
, (KERN_WARNING
"megaraid: blocked mailbox\n"));
3466 * megaraid_mbox_display_scb - display SCB information, mostly debug purposes
3467 * @adapter : controller's soft state
3468 * @scb : SCB to be displayed
3469 * @level : debug level for console print
3471 * Diplay information about the given SCB iff the current debug level is
3475 megaraid_mbox_display_scb(adapter_t
*adapter
, scb_t
*scb
)
3478 struct scsi_cmnd
*scp
;
3484 ccb
= (mbox_ccb_t
*)scb
->ccb
;
3490 con_log(level
, (KERN_NOTICE
3491 "megaraid mailbox: status:%#x cmd:%#x id:%#x ", scb
->status
,
3492 mbox
->cmd
, scb
->sno
));
3494 con_log(level
, ("sec:%#x lba:%#x addr:%#x ld:%d sg:%d\n",
3495 mbox
->numsectors
, mbox
->lba
, mbox
->xferaddr
, mbox
->logdrv
,
3500 con_log(level
, (KERN_NOTICE
"scsi cmnd: "));
3502 for (i
= 0; i
< scp
->cmd_len
; i
++) {
3503 con_log(level
, ("%#2.02x ", scp
->cmnd
[i
]));
3506 con_log(level
, ("\n"));
3513 * megaraid_mbox_setup_device_map - manage device ids
3514 * @adapter : Driver's soft state
3516 * Manange the device ids to have an appropraite mapping between the kernel
3517 * scsi addresses and megaraid scsi and logical drive addresses. We export
3518 * scsi devices on their actual addresses, whereas the logical drives are
3519 * exported on a virtual scsi channel.
3522 megaraid_mbox_setup_device_map(adapter_t
*adapter
)
3528 * First fill the values on the logical drive channel
3530 for (t
= 0; t
< LSI_MAX_LOGICAL_DRIVES_64LD
; t
++)
3531 adapter
->device_ids
[adapter
->max_channel
][t
] =
3532 (t
< adapter
->init_id
) ? t
: t
- 1;
3534 adapter
->device_ids
[adapter
->max_channel
][adapter
->init_id
] = 0xFF;
3537 * Fill the values on the physical devices channels
3539 for (c
= 0; c
< adapter
->max_channel
; c
++)
3540 for (t
= 0; t
< LSI_MAX_LOGICAL_DRIVES_64LD
; t
++)
3541 adapter
->device_ids
[c
][t
] = (c
<< 8) | t
;
3546 * END: internal commands library
3550 * START: Interface for the common management module
3552 * This is the module, which interfaces with the common mangement module to
3553 * provide support for ioctl and sysfs
3557 * megaraid_cmm_register - register with the mangement module
3558 * @adapter : HBA soft state
3560 * Register with the management module, which allows applications to issue
3561 * ioctl calls to the drivers. This interface is used by the management module
3562 * to setup sysfs support as well.
3565 megaraid_cmm_register(adapter_t
*adapter
)
3567 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
3574 // Allocate memory for the base list of scb for management module.
3575 adapter
->uscb_list
= kmalloc(sizeof(scb_t
) * MBOX_MAX_USER_CMDS
,
3578 if (adapter
->uscb_list
== NULL
) {
3579 con_log(CL_ANN
, (KERN_WARNING
3580 "megaraid: out of memory, %s %d\n", __FUNCTION__
,
3584 memset(adapter
->uscb_list
, 0, sizeof(scb_t
) * MBOX_MAX_USER_CMDS
);
3587 // Initialize the synchronization parameters for resources for
3588 // commands for management module
3589 INIT_LIST_HEAD(&adapter
->uscb_pool
);
3591 spin_lock_init(USER_FREE_LIST_LOCK(adapter
));
3595 // link all the packets. Note, CCB for commands, coming from the
3596 // commom management module, mailbox physical address are already
3597 // setup by it. We just need placeholder for that in our local command
3599 for (i
= 0; i
< MBOX_MAX_USER_CMDS
; i
++) {
3601 scb
= adapter
->uscb_list
+ i
;
3602 ccb
= raid_dev
->uccb_list
+ i
;
3604 scb
->ccb
= (caddr_t
)ccb
;
3605 ccb
->mbox64
= raid_dev
->umbox64
+ i
;
3606 ccb
->mbox
= &ccb
->mbox64
->mbox32
;
3607 ccb
->raw_mbox
= (uint8_t *)ccb
->mbox
;
3611 // COMMAND ID 0 - (MBOX_MAX_SCSI_CMDS-1) ARE RESERVED FOR
3612 // COMMANDS COMING FROM IO SUBSYSTEM (MID-LAYER)
3613 scb
->sno
= i
+ MBOX_MAX_SCSI_CMDS
;
3616 scb
->state
= SCB_FREE
;
3617 scb
->dma_direction
= PCI_DMA_NONE
;
3618 scb
->dma_type
= MRAID_DMA_NONE
;
3619 scb
->dev_channel
= -1;
3620 scb
->dev_target
= -1;
3622 // put scb in the free pool
3623 list_add_tail(&scb
->list
, &adapter
->uscb_pool
);
3626 adp
.unique_id
= adapter
->unique_id
;
3627 adp
.drvr_type
= DRVRTYPE_MBOX
;
3628 adp
.drvr_data
= (unsigned long)adapter
;
3629 adp
.pdev
= adapter
->pdev
;
3630 adp
.issue_uioc
= megaraid_mbox_mm_handler
;
3631 adp
.timeout
= MBOX_RESET_WAIT
+ MBOX_RESET_EXT_WAIT
;
3632 adp
.max_kioc
= MBOX_MAX_USER_CMDS
;
3634 if ((rval
= mraid_mm_register_adp(&adp
)) != 0) {
3636 con_log(CL_ANN
, (KERN_WARNING
3637 "megaraid mbox: did not register with CMM\n"));
3639 kfree(adapter
->uscb_list
);
3647 * megaraid_cmm_unregister - un-register with the mangement module
3648 * @adapter : HBA soft state
3650 * Un-register with the management module.
3651 * FIXME: mgmt module must return failure for unregister if it has pending
3655 megaraid_cmm_unregister(adapter_t
*adapter
)
3657 kfree(adapter
->uscb_list
);
3658 mraid_mm_unregister_adp(adapter
->unique_id
);
3664 * megaraid_mbox_mm_handler - interface for CMM to issue commands to LLD
3665 * @drvr_data : LLD specific data
3666 * @kioc : CMM interface packet
3667 * @action : command action
3669 * This routine is invoked whenever the Common Mangement Module (CMM) has a
3670 * command for us. The 'action' parameter specifies if this is a new command
3674 megaraid_mbox_mm_handler(unsigned long drvr_data
, uioc_t
*kioc
, uint32_t action
)
3678 if (action
!= IOCTL_ISSUE
) {
3679 con_log(CL_ANN
, (KERN_WARNING
3680 "megaraid: unsupported management action:%#2x\n",
3685 adapter
= (adapter_t
*)drvr_data
;
3687 // make sure this adapter is not being detached right now.
3688 if (atomic_read(&adapter
->being_detached
)) {
3689 con_log(CL_ANN
, (KERN_WARNING
3690 "megaraid: reject management request, detaching\n"));
3694 switch (kioc
->opcode
) {
3698 kioc
->status
= gather_hbainfo(adapter
, (mraid_hba_info_t
*)
3699 (unsigned long)kioc
->buf_vaddr
);
3703 return kioc
->status
;
3707 return megaraid_mbox_mm_command(adapter
, kioc
);
3710 kioc
->status
= (-EINVAL
);
3715 return 0; // not reached
3719 * megaraid_mbox_mm_command - issues commands routed through CMM
3720 * @adapter : HBA soft state
3721 * @kioc : management command packet
3723 * Issues commands, which are routed through the management module.
3726 megaraid_mbox_mm_command(adapter_t
*adapter
, uioc_t
*kioc
)
3728 struct list_head
*head
= &adapter
->uscb_pool
;
3733 unsigned long flags
;
3735 // detach one scb from free pool
3736 spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter
), flags
);
3738 if (list_empty(head
)) { // should never happen because of CMM
3740 con_log(CL_ANN
, (KERN_WARNING
3741 "megaraid mbox: bug in cmm handler, lost resources\n"));
3743 spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter
), flags
);
3748 scb
= list_entry(head
->next
, scb_t
, list
);
3749 list_del_init(&scb
->list
);
3751 spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter
), flags
);
3753 scb
->state
= SCB_ACTIVE
;
3754 scb
->dma_type
= MRAID_DMA_NONE
;
3755 scb
->dma_direction
= PCI_DMA_NONE
;
3757 ccb
= (mbox_ccb_t
*)scb
->ccb
;
3758 mbox64
= (mbox64_t
*)(unsigned long)kioc
->cmdbuf
;
3759 raw_mbox
= (uint8_t *)&mbox64
->mbox32
;
3761 memcpy(ccb
->mbox64
, mbox64
, sizeof(mbox64_t
));
3763 scb
->gp
= (unsigned long)kioc
;
3766 * If it is a logdrv random delete operation, we have to wait till
3767 * there are no outstanding cmds at the fw and then issue it directly
3769 if (raw_mbox
[0] == FC_DEL_LOGDRV
&& raw_mbox
[2] == OP_DEL_LOGDRV
) {
3771 if (wait_till_fw_empty(adapter
)) {
3772 con_log(CL_ANN
, (KERN_NOTICE
3773 "megaraid mbox: LD delete, timed out\n"));
3775 kioc
->status
= -ETIME
;
3779 megaraid_mbox_mm_done(adapter
, scb
);
3784 INIT_LIST_HEAD(&scb
->list
);
3786 scb
->state
= SCB_ISSUED
;
3787 if (mbox_post_cmd(adapter
, scb
) != 0) {
3789 con_log(CL_ANN
, (KERN_NOTICE
3790 "megaraid mbox: LD delete, mailbox busy\n"));
3792 kioc
->status
= -EBUSY
;
3796 megaraid_mbox_mm_done(adapter
, scb
);
3804 // put the command on the pending list and execute
3805 megaraid_mbox_runpendq(adapter
, scb
);
3812 wait_till_fw_empty(adapter_t
*adapter
)
3814 unsigned long flags
= 0;
3819 * Set the quiescent flag to stop issuing cmds to FW.
3821 spin_lock_irqsave(&adapter
->lock
, flags
);
3822 adapter
->quiescent
++;
3823 spin_unlock_irqrestore(&adapter
->lock
, flags
);
3826 * Wait till there are no more cmds outstanding at FW. Try for at most
3829 for (i
= 0; i
< 60 && adapter
->outstanding_cmds
; i
++) {
3830 con_log(CL_DLEVEL1
, (KERN_INFO
3831 "megaraid: FW has %d pending commands\n",
3832 adapter
->outstanding_cmds
));
3837 return adapter
->outstanding_cmds
;
3842 * megaraid_mbox_mm_done - callback for CMM commands
3843 * @adapter : HBA soft state
3844 * @scb : completed command
3846 * Callback routine for internal commands originated from the management
3850 megaraid_mbox_mm_done(adapter_t
*adapter
, scb_t
*scb
)
3855 unsigned long flags
;
3857 kioc
= (uioc_t
*)scb
->gp
;
3858 mbox64
= (mbox64_t
*)(unsigned long)kioc
->cmdbuf
;
3859 mbox64
->mbox32
.status
= scb
->status
;
3860 raw_mbox
= (uint8_t *)&mbox64
->mbox32
;
3863 // put scb in the free pool
3864 scb
->state
= SCB_FREE
;
3867 spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter
), flags
);
3869 list_add(&scb
->list
, &adapter
->uscb_pool
);
3871 spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter
), flags
);
3873 // if a delete logical drive operation succeeded, restart the
3875 if (raw_mbox
[0] == FC_DEL_LOGDRV
&& raw_mbox
[2] == OP_DEL_LOGDRV
) {
3877 adapter
->quiescent
--;
3879 megaraid_mbox_runpendq(adapter
, NULL
);
3889 * gather_hbainfo - HBA characteristics for the applications
3890 * @adapter : HBA soft state
3891 * @hinfo : pointer to the caller's host info strucuture
3894 gather_hbainfo(adapter_t
*adapter
, mraid_hba_info_t
*hinfo
)
3898 dmajor
= megaraid_mbox_version
[0];
3900 hinfo
->pci_vendor_id
= adapter
->pdev
->vendor
;
3901 hinfo
->pci_device_id
= adapter
->pdev
->device
;
3902 hinfo
->subsys_vendor_id
= adapter
->pdev
->subsystem_vendor
;
3903 hinfo
->subsys_device_id
= adapter
->pdev
->subsystem_device
;
3905 hinfo
->pci_bus
= adapter
->pdev
->bus
->number
;
3906 hinfo
->pci_dev_fn
= adapter
->pdev
->devfn
;
3907 hinfo
->pci_slot
= PCI_SLOT(adapter
->pdev
->devfn
);
3908 hinfo
->irq
= adapter
->host
->irq
;
3909 hinfo
->baseport
= ADAP2RAIDDEV(adapter
)->baseport
;
3911 hinfo
->unique_id
= (hinfo
->pci_bus
<< 8) | adapter
->pdev
->devfn
;
3912 hinfo
->host_no
= adapter
->host
->host_no
;
3918 * END: Interface for the common management module
3924 * megaraid_sysfs_alloc_resources - allocate sysfs related resources
3925 * @adapter : controller's soft state
3927 * Allocate packets required to issue FW calls whenever the sysfs attributes
3928 * are read. These attributes would require up-to-date information from the
3929 * FW. Also set up resources for mutual exclusion to share these resources and
3932 * Return 0 on success.
3933 * Return -ERROR_CODE on failure.
3936 megaraid_sysfs_alloc_resources(adapter_t
*adapter
)
3938 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
3941 raid_dev
->sysfs_uioc
= kmalloc(sizeof(uioc_t
), GFP_KERNEL
);
3943 raid_dev
->sysfs_mbox64
= kmalloc(sizeof(mbox64_t
), GFP_KERNEL
);
3945 raid_dev
->sysfs_buffer
= pci_alloc_consistent(adapter
->pdev
,
3946 PAGE_SIZE
, &raid_dev
->sysfs_buffer_dma
);
3948 if (!raid_dev
->sysfs_uioc
|| !raid_dev
->sysfs_mbox64
||
3949 !raid_dev
->sysfs_buffer
) {
3951 con_log(CL_ANN
, (KERN_WARNING
3952 "megaraid: out of memory, %s %d\n", __FUNCTION__
,
3957 megaraid_sysfs_free_resources(adapter
);
3960 sema_init(&raid_dev
->sysfs_sem
, 1);
3962 init_waitqueue_head(&raid_dev
->sysfs_wait_q
);
3969 * megaraid_sysfs_free_resources - free sysfs related resources
3970 * @adapter : controller's soft state
3972 * Free packets allocated for sysfs FW commands
3975 megaraid_sysfs_free_resources(adapter_t
*adapter
)
3977 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
3979 kfree(raid_dev
->sysfs_uioc
);
3980 kfree(raid_dev
->sysfs_mbox64
);
3982 if (raid_dev
->sysfs_buffer
) {
3983 pci_free_consistent(adapter
->pdev
, PAGE_SIZE
,
3984 raid_dev
->sysfs_buffer
, raid_dev
->sysfs_buffer_dma
);
3990 * megaraid_sysfs_get_ldmap_done - callback for get ldmap
3991 * @uioc : completed packet
3993 * Callback routine called in the ISR/tasklet context for get ldmap call
3996 megaraid_sysfs_get_ldmap_done(uioc_t
*uioc
)
3998 adapter_t
*adapter
= (adapter_t
*)uioc
->buf_vaddr
;
3999 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
4003 wake_up(&raid_dev
->sysfs_wait_q
);
4008 * megaraid_sysfs_get_ldmap_timeout - timeout handling for get ldmap
4009 * @data : timed out packet
4011 * Timeout routine to recover and return to application, in case the adapter
4012 * has stopped responding. A timeout of 60 seconds for this command seems like
4016 megaraid_sysfs_get_ldmap_timeout(unsigned long data
)
4018 uioc_t
*uioc
= (uioc_t
*)data
;
4019 adapter_t
*adapter
= (adapter_t
*)uioc
->buf_vaddr
;
4020 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
4022 uioc
->status
= -ETIME
;
4024 wake_up(&raid_dev
->sysfs_wait_q
);
4029 * megaraid_sysfs_get_ldmap - get update logical drive map
4030 * @adapter : controller's soft state
4032 * This routine will be called whenever user reads the logical drive
4033 * attributes, go get the current logical drive mapping table from the
4034 * firmware. We use the managment API's to issue commands to the controller.
4036 * NOTE: The commands issuance functionality is not generalized and
4037 * implemented in context of "get ld map" command only. If required, the
4038 * command issuance logical can be trivially pulled out and implemented as a
4039 * standalone libary. For now, this should suffice since there is no other
4040 * user of this interface.
4042 * Return 0 on success.
4043 * Return -1 on failure.
4046 megaraid_sysfs_get_ldmap(adapter_t
*adapter
)
4048 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
4053 struct timer_list sysfs_timer
;
4054 struct timer_list
*timerp
;
4059 * Allow only one read at a time to go through the sysfs attributes
4061 down(&raid_dev
->sysfs_sem
);
4063 uioc
= raid_dev
->sysfs_uioc
;
4064 mbox64
= raid_dev
->sysfs_mbox64
;
4065 ldmap
= raid_dev
->sysfs_buffer
;
4067 memset(uioc
, 0, sizeof(uioc_t
));
4068 memset(mbox64
, 0, sizeof(mbox64_t
));
4069 memset(ldmap
, 0, sizeof(raid_dev
->curr_ldmap
));
4071 mbox
= &mbox64
->mbox32
;
4072 raw_mbox
= (char *)mbox
;
4073 uioc
->cmdbuf
= (uint64_t)(unsigned long)mbox64
;
4074 uioc
->buf_vaddr
= (caddr_t
)adapter
;
4075 uioc
->status
= -ENODATA
;
4076 uioc
->done
= megaraid_sysfs_get_ldmap_done
;
4079 * Prepare the mailbox packet to get the current logical drive mapping
4082 mbox
->xferaddr
= (uint32_t)raid_dev
->sysfs_buffer_dma
;
4084 raw_mbox
[0] = FC_DEL_LOGDRV
;
4085 raw_mbox
[2] = OP_GET_LDID_MAP
;
4088 * Setup a timer to recover from a non-responding controller
4090 timerp
= &sysfs_timer
;
4093 timerp
->function
= megaraid_sysfs_get_ldmap_timeout
;
4094 timerp
->data
= (unsigned long)uioc
;
4095 timerp
->expires
= jiffies
+ 60 * HZ
;
4100 * Send the command to the firmware
4102 rval
= megaraid_mbox_mm_command(adapter
, uioc
);
4104 if (rval
== 0) { // command successfully issued
4105 wait_event(raid_dev
->sysfs_wait_q
, (uioc
->status
!= -ENODATA
));
4108 * Check if the command timed out
4110 if (uioc
->status
== -ETIME
) {
4111 con_log(CL_ANN
, (KERN_NOTICE
4112 "megaraid: sysfs get ld map timed out\n"));
4117 rval
= mbox
->status
;
4121 memcpy(raid_dev
->curr_ldmap
, ldmap
,
4122 sizeof(raid_dev
->curr_ldmap
));
4125 con_log(CL_ANN
, (KERN_NOTICE
4126 "megaraid: get ld map failed with %x\n", rval
));
4130 con_log(CL_ANN
, (KERN_NOTICE
4131 "megaraid: could not issue ldmap command:%x\n", rval
));
4135 del_timer_sync(timerp
);
4137 up(&raid_dev
->sysfs_sem
);
4144 * megaraid_sysfs_show_app_hndl - display application handle for this adapter
4145 * @cdev : class device object representation for the host
4146 * @buf : buffer to send data to
4148 * Display the handle used by the applications while executing management
4149 * tasks on the adapter. We invoke a management module API to get the adapter
4150 * handle, since we do not interface with applications directly.
4153 megaraid_sysfs_show_app_hndl(struct class_device
*cdev
, char *buf
)
4155 struct Scsi_Host
*shost
= class_to_shost(cdev
);
4156 adapter_t
*adapter
= (adapter_t
*)SCSIHOST2ADAP(shost
);
4159 app_hndl
= mraid_mm_adapter_app_handle(adapter
->unique_id
);
4161 return snprintf(buf
, 8, "%u\n", app_hndl
);
4166 * megaraid_sysfs_show_ldnum - display the logical drive number for this device
4167 * @dev : device object representation for the scsi device
4168 * @attr : device attribute to show
4169 * @buf : buffer to send data to
4171 * Display the logical drive number for the device in question, if it a valid
4172 * logical drive. For physical devices, "-1" is returned.
4174 * The logical drive number is displayed in following format:
4176 * <SCSI ID> <LD NUM> <LD STICKY ID> <APP ADAPTER HANDLE>
4178 * <int> <int> <int> <int>
4181 megaraid_sysfs_show_ldnum(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
4183 struct scsi_device
*sdev
= to_scsi_device(dev
);
4184 adapter_t
*adapter
= (adapter_t
*)SCSIHOST2ADAP(sdev
->host
);
4185 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
4187 int logical_drv
= -1;
4189 uint32_t app_hndl
= 0;
4194 if (raid_dev
->random_del_supported
&&
4195 MRAID_IS_LOGICAL_SDEV(adapter
, sdev
)) {
4197 rval
= megaraid_sysfs_get_ldmap(adapter
);
4200 for (i
= 0; i
< MAX_LOGICAL_DRIVES_40LD
; i
++) {
4202 mapped_sdev_id
= sdev
->id
;
4204 if (sdev
->id
> adapter
->init_id
) {
4205 mapped_sdev_id
-= 1;
4208 if (raid_dev
->curr_ldmap
[i
] == mapped_sdev_id
) {
4214 ldid_map
= raid_dev
->curr_ldmap
[i
];
4216 app_hndl
= mraid_mm_adapter_app_handle(
4217 adapter
->unique_id
);
4224 con_log(CL_ANN
, (KERN_NOTICE
4225 "megaraid: sysfs get ld map failed: %x\n",
4230 return snprintf(buf
, 36, "%d %d %d %d\n", scsi_id
, logical_drv
,
4231 ldid_map
, app_hndl
);
4236 * END: Mailbox Low Level Driver
4238 module_init(megaraid_init
);
4239 module_exit(megaraid_exit
);
4241 /* vim: set ts=8 sw=8 tw=78 ai si: */