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 <linux/slab.h>
74 #include <linux/module.h>
75 #include "megaraid_mbox.h"
77 static int megaraid_init(void);
78 static void megaraid_exit(void);
80 static int megaraid_probe_one(struct pci_dev
*, const struct pci_device_id
*);
81 static void megaraid_detach_one(struct pci_dev
*);
82 static void megaraid_mbox_shutdown(struct pci_dev
*);
84 static int megaraid_io_attach(adapter_t
*);
85 static void megaraid_io_detach(adapter_t
*);
87 static int megaraid_init_mbox(adapter_t
*);
88 static void megaraid_fini_mbox(adapter_t
*);
90 static int megaraid_alloc_cmd_packets(adapter_t
*);
91 static void megaraid_free_cmd_packets(adapter_t
*);
93 static int megaraid_mbox_setup_dma_pools(adapter_t
*);
94 static void megaraid_mbox_teardown_dma_pools(adapter_t
*);
96 static int megaraid_sysfs_alloc_resources(adapter_t
*);
97 static void megaraid_sysfs_free_resources(adapter_t
*);
99 static int megaraid_abort_handler(struct scsi_cmnd
*);
100 static int megaraid_reset_handler(struct scsi_cmnd
*);
102 static int mbox_post_sync_cmd(adapter_t
*, uint8_t []);
103 static int mbox_post_sync_cmd_fast(adapter_t
*, uint8_t []);
104 static int megaraid_busywait_mbox(mraid_device_t
*);
105 static int megaraid_mbox_product_info(adapter_t
*);
106 static int megaraid_mbox_extended_cdb(adapter_t
*);
107 static int megaraid_mbox_support_ha(adapter_t
*, uint16_t *);
108 static int megaraid_mbox_support_random_del(adapter_t
*);
109 static int megaraid_mbox_get_max_sg(adapter_t
*);
110 static void megaraid_mbox_enum_raid_scsi(adapter_t
*);
111 static void megaraid_mbox_flush_cache(adapter_t
*);
112 static int megaraid_mbox_fire_sync_cmd(adapter_t
*);
114 static void megaraid_mbox_display_scb(adapter_t
*, scb_t
*);
115 static void megaraid_mbox_setup_device_map(adapter_t
*);
117 static int megaraid_queue_command(struct Scsi_Host
*, struct scsi_cmnd
*);
118 static scb_t
*megaraid_mbox_build_cmd(adapter_t
*, struct scsi_cmnd
*, int *);
119 static void megaraid_mbox_runpendq(adapter_t
*, scb_t
*);
120 static void megaraid_mbox_prepare_pthru(adapter_t
*, scb_t
*,
122 static void megaraid_mbox_prepare_epthru(adapter_t
*, scb_t
*,
125 static irqreturn_t
megaraid_isr(int, void *);
127 static void megaraid_mbox_dpc(unsigned long);
129 static ssize_t
megaraid_sysfs_show_app_hndl(struct device
*, struct device_attribute
*attr
, char *);
130 static ssize_t
megaraid_sysfs_show_ldnum(struct device
*, struct device_attribute
*attr
, char *);
132 static int megaraid_cmm_register(adapter_t
*);
133 static int megaraid_cmm_unregister(adapter_t
*);
134 static int megaraid_mbox_mm_handler(unsigned long, uioc_t
*, uint32_t);
135 static int megaraid_mbox_mm_command(adapter_t
*, uioc_t
*);
136 static void megaraid_mbox_mm_done(adapter_t
*, scb_t
*);
137 static int gather_hbainfo(adapter_t
*, mraid_hba_info_t
*);
138 static int wait_till_fw_empty(adapter_t
*);
142 MODULE_AUTHOR("megaraidlinux@lsi.com");
143 MODULE_DESCRIPTION("LSI Logic MegaRAID Mailbox Driver");
144 MODULE_LICENSE("GPL");
145 MODULE_VERSION(MEGARAID_VERSION
);
148 * ### modules parameters for driver ###
152 * Set to enable driver to expose unconfigured disk to kernel
154 static int megaraid_expose_unconf_disks
= 0;
155 module_param_named(unconf_disks
, megaraid_expose_unconf_disks
, int, 0);
156 MODULE_PARM_DESC(unconf_disks
,
157 "Set to expose unconfigured disks to kernel (default=0)");
160 * driver wait time if the adapter's mailbox is busy
162 static unsigned int max_mbox_busy_wait
= MBOX_BUSY_WAIT
;
163 module_param_named(busy_wait
, max_mbox_busy_wait
, int, 0);
164 MODULE_PARM_DESC(busy_wait
,
165 "Max wait for mailbox in microseconds if busy (default=10)");
168 * number of sectors per IO command
170 static unsigned int megaraid_max_sectors
= MBOX_MAX_SECTORS
;
171 module_param_named(max_sectors
, megaraid_max_sectors
, int, 0);
172 MODULE_PARM_DESC(max_sectors
,
173 "Maximum number of sectors per IO command (default=128)");
176 * number of commands per logical unit
178 static unsigned int megaraid_cmd_per_lun
= MBOX_DEF_CMD_PER_LUN
;
179 module_param_named(cmd_per_lun
, megaraid_cmd_per_lun
, int, 0);
180 MODULE_PARM_DESC(cmd_per_lun
,
181 "Maximum number of commands per logical unit (default=64)");
185 * Fast driver load option, skip scanning for physical devices during load.
186 * This would result in non-disk devices being skipped during driver load
187 * time. These can be later added though, using /proc/scsi/scsi
189 static unsigned int megaraid_fast_load
= 0;
190 module_param_named(fast_load
, megaraid_fast_load
, int, 0);
191 MODULE_PARM_DESC(fast_load
,
192 "Faster loading of the driver, skips physical devices! (default=0)");
196 * mraid_debug level - threshold for amount of information to be displayed by
197 * the driver. This level can be changed through modules parameters, ioctl or
198 * sysfs/proc interface. By default, print the announcement messages only.
200 int mraid_debug_level
= CL_ANN
;
201 module_param_named(debug_level
, mraid_debug_level
, int, 0);
202 MODULE_PARM_DESC(debug_level
, "Debug level for driver (default=0)");
205 * ### global data ###
207 static uint8_t megaraid_mbox_version
[8] =
208 { 0x02, 0x20, 0x04, 0x06, 3, 7, 20, 5 };
212 * PCI table for all supported controllers.
214 static struct pci_device_id pci_id_table_g
[] = {
217 PCI_DEVICE_ID_PERC4_DI_DISCOVERY
,
219 PCI_SUBSYS_ID_PERC4_DI_DISCOVERY
,
222 PCI_VENDOR_ID_LSI_LOGIC
,
223 PCI_DEVICE_ID_PERC4_SC
,
225 PCI_SUBSYS_ID_PERC4_SC
,
228 PCI_VENDOR_ID_LSI_LOGIC
,
229 PCI_DEVICE_ID_PERC4_DC
,
231 PCI_SUBSYS_ID_PERC4_DC
,
234 PCI_VENDOR_ID_LSI_LOGIC
,
241 PCI_DEVICE_ID_PERC4_DI_EVERGLADES
,
243 PCI_SUBSYS_ID_PERC4_DI_EVERGLADES
,
247 PCI_DEVICE_ID_PERC4E_SI_BIGBEND
,
249 PCI_SUBSYS_ID_PERC4E_SI_BIGBEND
,
253 PCI_DEVICE_ID_PERC4E_DI_KOBUK
,
255 PCI_SUBSYS_ID_PERC4E_DI_KOBUK
,
259 PCI_DEVICE_ID_PERC4E_DI_CORVETTE
,
261 PCI_SUBSYS_ID_PERC4E_DI_CORVETTE
,
265 PCI_DEVICE_ID_PERC4E_DI_EXPEDITION
,
267 PCI_SUBSYS_ID_PERC4E_DI_EXPEDITION
,
271 PCI_DEVICE_ID_PERC4E_DI_GUADALUPE
,
273 PCI_SUBSYS_ID_PERC4E_DI_GUADALUPE
,
276 PCI_VENDOR_ID_LSI_LOGIC
,
277 PCI_DEVICE_ID_DOBSON
,
283 PCI_DEVICE_ID_AMI_MEGARAID3
,
288 PCI_VENDOR_ID_LSI_LOGIC
,
289 PCI_DEVICE_ID_AMI_MEGARAID3
,
294 PCI_VENDOR_ID_LSI_LOGIC
,
295 PCI_DEVICE_ID_LINDSAY
,
299 {0} /* Terminating entry */
301 MODULE_DEVICE_TABLE(pci
, pci_id_table_g
);
304 static struct pci_driver megaraid_pci_driver
= {
306 .id_table
= pci_id_table_g
,
307 .probe
= megaraid_probe_one
,
308 .remove
= __devexit_p(megaraid_detach_one
),
309 .shutdown
= megaraid_mbox_shutdown
,
314 // definitions for the device attributes for exporting logical drive number
315 // for a scsi address (Host, Channel, Id, Lun)
317 DEVICE_ATTR(megaraid_mbox_app_hndl
, S_IRUSR
, megaraid_sysfs_show_app_hndl
,
320 // Host template initializer for megaraid mbox sysfs device attributes
321 static struct device_attribute
*megaraid_shost_attrs
[] = {
322 &dev_attr_megaraid_mbox_app_hndl
,
327 DEVICE_ATTR(megaraid_mbox_ld
, S_IRUSR
, megaraid_sysfs_show_ldnum
, NULL
);
329 // Host template initializer for megaraid mbox sysfs device attributes
330 static struct device_attribute
*megaraid_sdev_attrs
[] = {
331 &dev_attr_megaraid_mbox_ld
,
336 * megaraid_change_queue_depth - Change the device's queue depth
337 * @sdev: scsi device struct
338 * @qdepth: depth to set
339 * @reason: calling context
344 static int megaraid_change_queue_depth(struct scsi_device
*sdev
, int qdepth
,
347 if (reason
!= SCSI_QDEPTH_DEFAULT
)
350 if (qdepth
> MBOX_MAX_SCSI_CMDS
)
351 qdepth
= MBOX_MAX_SCSI_CMDS
;
352 scsi_adjust_queue_depth(sdev
, 0, qdepth
);
353 return sdev
->queue_depth
;
357 * Scsi host template for megaraid unified driver
359 static struct scsi_host_template megaraid_template_g
= {
360 .module
= THIS_MODULE
,
361 .name
= "LSI Logic MegaRAID driver",
362 .proc_name
= "megaraid",
363 .queuecommand
= megaraid_queue_command
,
364 .eh_abort_handler
= megaraid_abort_handler
,
365 .eh_device_reset_handler
= megaraid_reset_handler
,
366 .eh_bus_reset_handler
= megaraid_reset_handler
,
367 .eh_host_reset_handler
= megaraid_reset_handler
,
368 .change_queue_depth
= megaraid_change_queue_depth
,
369 .use_clustering
= ENABLE_CLUSTERING
,
370 .sdev_attrs
= megaraid_sdev_attrs
,
371 .shost_attrs
= megaraid_shost_attrs
,
376 * megaraid_init - module load hook
378 * We register ourselves as hotplug enabled module and let PCI subsystem
379 * discover our adapters.
386 // Announce the driver version
387 con_log(CL_ANN
, (KERN_INFO
"megaraid: %s %s\n", MEGARAID_VERSION
,
388 MEGARAID_EXT_VERSION
));
390 // check validity of module parameters
391 if (megaraid_cmd_per_lun
> MBOX_MAX_SCSI_CMDS
) {
393 con_log(CL_ANN
, (KERN_WARNING
394 "megaraid mailbox: max commands per lun reset to %d\n",
395 MBOX_MAX_SCSI_CMDS
));
397 megaraid_cmd_per_lun
= MBOX_MAX_SCSI_CMDS
;
401 // register as a PCI hot-plug driver module
402 rval
= pci_register_driver(&megaraid_pci_driver
);
404 con_log(CL_ANN
, (KERN_WARNING
405 "megaraid: could not register hotplug support.\n"));
413 * megaraid_exit - driver unload entry point
415 * We simply unwrap the megaraid_init routine here.
420 con_log(CL_DLEVEL1
, (KERN_NOTICE
"megaraid: unloading framework\n"));
422 // unregister as PCI hotplug driver
423 pci_unregister_driver(&megaraid_pci_driver
);
430 * megaraid_probe_one - PCI hotplug entry point
431 * @pdev : handle to this controller's PCI configuration space
432 * @id : pci device id of the class of controllers
434 * This routine should be called whenever a new adapter is detected by the
435 * PCI hotplug susbsystem.
438 megaraid_probe_one(struct pci_dev
*pdev
, const struct pci_device_id
*id
)
443 // detected a new controller
444 con_log(CL_ANN
, (KERN_INFO
445 "megaraid: probe new device %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
446 pdev
->vendor
, pdev
->device
, pdev
->subsystem_vendor
,
447 pdev
->subsystem_device
));
449 con_log(CL_ANN
, ("bus %d:slot %d:func %d\n", pdev
->bus
->number
,
450 PCI_SLOT(pdev
->devfn
), PCI_FUNC(pdev
->devfn
)));
452 if (pci_enable_device(pdev
)) {
453 con_log(CL_ANN
, (KERN_WARNING
454 "megaraid: pci_enable_device failed\n"));
459 // Enable bus-mastering on this controller
460 pci_set_master(pdev
);
462 // Allocate the per driver initialization structure
463 adapter
= kzalloc(sizeof(adapter_t
), GFP_KERNEL
);
465 if (adapter
== NULL
) {
466 con_log(CL_ANN
, (KERN_WARNING
467 "megaraid: out of memory, %s %d.\n", __func__
, __LINE__
));
473 // set up PCI related soft state and other pre-known parameters
474 adapter
->unique_id
= pdev
->bus
->number
<< 8 | pdev
->devfn
;
475 adapter
->irq
= pdev
->irq
;
476 adapter
->pdev
= pdev
;
478 atomic_set(&adapter
->being_detached
, 0);
480 // Setup the default DMA mask. This would be changed later on
481 // depending on hardware capabilities
482 if (pci_set_dma_mask(adapter
->pdev
, DMA_BIT_MASK(32)) != 0) {
484 con_log(CL_ANN
, (KERN_WARNING
485 "megaraid: pci_set_dma_mask failed:%d\n", __LINE__
));
487 goto out_free_adapter
;
491 // Initialize the synchronization lock for kernel and LLD
492 spin_lock_init(&adapter
->lock
);
494 // Initialize the command queues: the list of free SCBs and the list
496 INIT_LIST_HEAD(&adapter
->kscb_pool
);
497 spin_lock_init(SCSI_FREE_LIST_LOCK(adapter
));
499 INIT_LIST_HEAD(&adapter
->pend_list
);
500 spin_lock_init(PENDING_LIST_LOCK(adapter
));
502 INIT_LIST_HEAD(&adapter
->completed_list
);
503 spin_lock_init(COMPLETED_LIST_LOCK(adapter
));
506 // Start the mailbox based controller
507 if (megaraid_init_mbox(adapter
) != 0) {
508 con_log(CL_ANN
, (KERN_WARNING
509 "megaraid: maibox adapter did not initialize\n"));
511 goto out_free_adapter
;
514 // Register with LSI Common Management Module
515 if (megaraid_cmm_register(adapter
) != 0) {
517 con_log(CL_ANN
, (KERN_WARNING
518 "megaraid: could not register with management module\n"));
523 // setup adapter handle in PCI soft state
524 pci_set_drvdata(pdev
, adapter
);
526 // attach with scsi mid-layer
527 if (megaraid_io_attach(adapter
) != 0) {
529 con_log(CL_ANN
, (KERN_WARNING
"megaraid: io attach failed\n"));
537 pci_set_drvdata(pdev
, NULL
);
538 megaraid_cmm_unregister(adapter
);
540 megaraid_fini_mbox(adapter
);
544 pci_disable_device(pdev
);
551 * megaraid_detach_one - release framework resources and call LLD release routine
552 * @pdev : handle for our PCI cofiguration space
554 * This routine is called during driver unload. We free all the allocated
555 * resources and call the corresponding LLD so that it can also release all
558 * This routine is also called from the PCI hotplug system.
561 megaraid_detach_one(struct pci_dev
*pdev
)
564 struct Scsi_Host
*host
;
567 // Start a rollback on this adapter
568 adapter
= pci_get_drvdata(pdev
);
571 con_log(CL_ANN
, (KERN_CRIT
572 "megaraid: Invalid detach on %#4.04x:%#4.04x:%#4.04x:%#4.04x\n",
573 pdev
->vendor
, pdev
->device
, pdev
->subsystem_vendor
,
574 pdev
->subsystem_device
));
579 con_log(CL_ANN
, (KERN_NOTICE
580 "megaraid: detaching device %#4.04x:%#4.04x:%#4.04x:%#4.04x\n",
581 pdev
->vendor
, pdev
->device
, pdev
->subsystem_vendor
,
582 pdev
->subsystem_device
));
586 host
= adapter
->host
;
588 // do not allow any more requests from the management module for this
590 // FIXME: How do we account for the request which might still be
592 atomic_set(&adapter
->being_detached
, 1);
594 // detach from the IO sub-system
595 megaraid_io_detach(adapter
);
597 // reset the device state in the PCI structure. We check this
598 // condition when we enter here. If the device state is NULL,
599 // that would mean the device has already been removed
600 pci_set_drvdata(pdev
, NULL
);
602 // Unregister from common management module
604 // FIXME: this must return success or failure for conditions if there
605 // is a command pending with LLD or not.
606 megaraid_cmm_unregister(adapter
);
608 // finalize the mailbox based controller and release all resources
609 megaraid_fini_mbox(adapter
);
615 pci_disable_device(pdev
);
622 * megaraid_mbox_shutdown - PCI shutdown for megaraid HBA
623 * @pdev : generic driver model device
625 * Shutdown notification, perform flush cache.
628 megaraid_mbox_shutdown(struct pci_dev
*pdev
)
630 adapter_t
*adapter
= pci_get_drvdata(pdev
);
634 con_log(CL_ANN
, (KERN_WARNING
635 "megaraid: null device in shutdown\n"));
640 con_log(CL_ANN
, (KERN_INFO
"megaraid: flushing adapter %d...",
643 megaraid_mbox_flush_cache(adapter
);
645 con_log(CL_ANN
, ("done\n"));
650 * megaraid_io_attach - attach a device with the IO subsystem
651 * @adapter : controller's soft state
653 * Attach this device with the IO subsystem.
656 megaraid_io_attach(adapter_t
*adapter
)
658 struct Scsi_Host
*host
;
660 // Initialize SCSI Host structure
661 host
= scsi_host_alloc(&megaraid_template_g
, 8);
663 con_log(CL_ANN
, (KERN_WARNING
664 "megaraid mbox: scsi_register failed\n"));
669 SCSIHOST2ADAP(host
) = (caddr_t
)adapter
;
670 adapter
->host
= host
;
672 host
->irq
= adapter
->irq
;
673 host
->unique_id
= adapter
->unique_id
;
674 host
->can_queue
= adapter
->max_cmds
;
675 host
->this_id
= adapter
->init_id
;
676 host
->sg_tablesize
= adapter
->sglen
;
677 host
->max_sectors
= adapter
->max_sectors
;
678 host
->cmd_per_lun
= adapter
->cmd_per_lun
;
679 host
->max_channel
= adapter
->max_channel
;
680 host
->max_id
= adapter
->max_target
;
681 host
->max_lun
= adapter
->max_lun
;
684 // notify mid-layer about the new controller
685 if (scsi_add_host(host
, &adapter
->pdev
->dev
)) {
687 con_log(CL_ANN
, (KERN_WARNING
688 "megaraid mbox: scsi_add_host failed\n"));
695 scsi_scan_host(host
);
702 * megaraid_io_detach - detach a device from the IO subsystem
703 * @adapter : controller's soft state
705 * Detach this device from the IO subsystem.
708 megaraid_io_detach(adapter_t
*adapter
)
710 struct Scsi_Host
*host
;
712 con_log(CL_DLEVEL1
, (KERN_INFO
"megaraid: io detach\n"));
714 host
= adapter
->host
;
716 scsi_remove_host(host
);
723 * START: Mailbox Low Level Driver
725 * This is section specific to the single mailbox based controllers
729 * megaraid_init_mbox - initialize controller
730 * @adapter : our soft state
732 * - Allocate 16-byte aligned mailbox memory for firmware handshake
733 * - Allocate controller's memory resources
734 * - Find out all initialization data
735 * - Allocate memory required for all the commands
736 * - Use internal library of FW routines, build up complete soft state
739 megaraid_init_mbox(adapter_t
*adapter
)
741 struct pci_dev
*pdev
;
742 mraid_device_t
*raid_dev
;
747 adapter
->ito
= MBOX_TIMEOUT
;
748 pdev
= adapter
->pdev
;
751 * Allocate and initialize the init data structure for mailbox
754 raid_dev
= kzalloc(sizeof(mraid_device_t
), GFP_KERNEL
);
755 if (raid_dev
== NULL
) return -1;
759 * Attach the adapter soft state to raid device soft state
761 adapter
->raid_device
= (caddr_t
)raid_dev
;
762 raid_dev
->fast_load
= megaraid_fast_load
;
766 raid_dev
->baseport
= pci_resource_start(pdev
, 0);
768 if (pci_request_regions(pdev
, "MegaRAID: LSI Logic Corporation") != 0) {
770 con_log(CL_ANN
, (KERN_WARNING
771 "megaraid: mem region busy\n"));
773 goto out_free_raid_dev
;
776 raid_dev
->baseaddr
= ioremap_nocache(raid_dev
->baseport
, 128);
778 if (!raid_dev
->baseaddr
) {
780 con_log(CL_ANN
, (KERN_WARNING
781 "megaraid: could not map hba memory\n") );
783 goto out_release_regions
;
786 /* initialize the mutual exclusion lock for the mailbox */
787 spin_lock_init(&raid_dev
->mailbox_lock
);
789 /* allocate memory required for commands */
790 if (megaraid_alloc_cmd_packets(adapter
) != 0)
794 * Issue SYNC cmd to flush the pending cmds in the adapter
795 * and initialize its internal state
798 if (megaraid_mbox_fire_sync_cmd(adapter
))
799 con_log(CL_ANN
, ("megaraid: sync cmd failed\n"));
802 * Setup the rest of the soft state using the library of
806 /* request IRQ and register the interrupt service routine */
807 if (request_irq(adapter
->irq
, megaraid_isr
, IRQF_SHARED
, "megaraid",
810 con_log(CL_ANN
, (KERN_WARNING
811 "megaraid: Couldn't register IRQ %d!\n", adapter
->irq
));
817 if (megaraid_mbox_product_info(adapter
) != 0)
820 // Do we support extended CDBs
821 adapter
->max_cdb_sz
= 10;
822 if (megaraid_mbox_extended_cdb(adapter
) == 0) {
823 adapter
->max_cdb_sz
= 16;
827 * Do we support cluster environment, if we do, what is the initiator
829 * NOTE: In a non-cluster aware firmware environment, the LLD should
830 * return 7 as initiator id.
833 adapter
->init_id
= -1;
834 if (megaraid_mbox_support_ha(adapter
, &adapter
->init_id
) == 0) {
839 * Prepare the device ids array to have the mapping between the kernel
840 * device address and megaraid device address.
841 * We export the physical devices on their actual addresses. The
842 * logical drives are exported on a virtual SCSI channel
844 megaraid_mbox_setup_device_map(adapter
);
846 // If the firmware supports random deletion, update the device id map
847 if (megaraid_mbox_support_random_del(adapter
)) {
849 // Change the logical drives numbers in device_ids array one
850 // slot in device_ids is reserved for target id, that's why
852 for (i
= 0; i
<= MAX_LOGICAL_DRIVES_40LD
; i
++) {
853 adapter
->device_ids
[adapter
->max_channel
][i
] += 0x80;
855 adapter
->device_ids
[adapter
->max_channel
][adapter
->init_id
] =
858 raid_dev
->random_del_supported
= 1;
862 * find out the maximum number of scatter-gather elements supported by
865 adapter
->sglen
= megaraid_mbox_get_max_sg(adapter
);
867 // enumerate RAID and SCSI channels so that all devices on SCSI
868 // channels can later be exported, including disk devices
869 megaraid_mbox_enum_raid_scsi(adapter
);
872 * Other parameters required by upper layer
874 * maximum number of sectors per IO command
876 adapter
->max_sectors
= megaraid_max_sectors
;
879 * number of queued commands per LUN.
881 adapter
->cmd_per_lun
= megaraid_cmd_per_lun
;
884 * Allocate resources required to issue FW calls, when sysfs is
887 if (megaraid_sysfs_alloc_resources(adapter
) != 0)
890 // Set the DMA mask to 64-bit. All supported controllers as capable of
892 pci_read_config_dword(adapter
->pdev
, PCI_CONF_AMISIG64
, &magic64
);
894 if (((magic64
== HBA_SIGNATURE_64_BIT
) &&
895 ((adapter
->pdev
->subsystem_device
!=
896 PCI_SUBSYS_ID_MEGARAID_SATA_150_6
) &&
897 (adapter
->pdev
->subsystem_device
!=
898 PCI_SUBSYS_ID_MEGARAID_SATA_150_4
))) ||
899 (adapter
->pdev
->vendor
== PCI_VENDOR_ID_LSI_LOGIC
&&
900 adapter
->pdev
->device
== PCI_DEVICE_ID_VERDE
) ||
901 (adapter
->pdev
->vendor
== PCI_VENDOR_ID_LSI_LOGIC
&&
902 adapter
->pdev
->device
== PCI_DEVICE_ID_DOBSON
) ||
903 (adapter
->pdev
->vendor
== PCI_VENDOR_ID_LSI_LOGIC
&&
904 adapter
->pdev
->device
== PCI_DEVICE_ID_LINDSAY
) ||
905 (adapter
->pdev
->vendor
== PCI_VENDOR_ID_DELL
&&
906 adapter
->pdev
->device
== PCI_DEVICE_ID_PERC4_DI_EVERGLADES
) ||
907 (adapter
->pdev
->vendor
== PCI_VENDOR_ID_DELL
&&
908 adapter
->pdev
->device
== PCI_DEVICE_ID_PERC4E_DI_KOBUK
)) {
909 if (pci_set_dma_mask(adapter
->pdev
, DMA_BIT_MASK(64))) {
910 con_log(CL_ANN
, (KERN_WARNING
911 "megaraid: DMA mask for 64-bit failed\n"));
913 if (pci_set_dma_mask (adapter
->pdev
, DMA_BIT_MASK(32))) {
914 con_log(CL_ANN
, (KERN_WARNING
915 "megaraid: 32-bit DMA mask failed\n"));
916 goto out_free_sysfs_res
;
921 // setup tasklet for DPC
922 tasklet_init(&adapter
->dpc_h
, megaraid_mbox_dpc
,
923 (unsigned long)adapter
);
925 con_log(CL_DLEVEL1
, (KERN_INFO
926 "megaraid mbox hba successfully initialized\n"));
931 megaraid_sysfs_free_resources(adapter
);
933 free_irq(adapter
->irq
, adapter
);
935 megaraid_free_cmd_packets(adapter
);
937 iounmap(raid_dev
->baseaddr
);
939 pci_release_regions(pdev
);
948 * megaraid_fini_mbox - undo controller initialization
949 * @adapter : our soft state
952 megaraid_fini_mbox(adapter_t
*adapter
)
954 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
957 megaraid_mbox_flush_cache(adapter
);
959 tasklet_kill(&adapter
->dpc_h
);
961 megaraid_sysfs_free_resources(adapter
);
963 megaraid_free_cmd_packets(adapter
);
965 free_irq(adapter
->irq
, adapter
);
967 iounmap(raid_dev
->baseaddr
);
969 pci_release_regions(adapter
->pdev
);
978 * megaraid_alloc_cmd_packets - allocate shared mailbox
979 * @adapter : soft state of the raid controller
981 * Allocate and align the shared mailbox. This maibox is used to issue
982 * all the commands. For IO based controllers, the mailbox is also regsitered
983 * with the FW. Allocate memory for all commands as well.
984 * This is our big allocator.
987 megaraid_alloc_cmd_packets(adapter_t
*adapter
)
989 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
990 struct pci_dev
*pdev
;
994 struct mraid_pci_blk
*epthru_pci_blk
;
995 struct mraid_pci_blk
*sg_pci_blk
;
996 struct mraid_pci_blk
*mbox_pci_blk
;
999 pdev
= adapter
->pdev
;
1003 * Allocate the common 16-byte aligned memory for the handshake
1006 raid_dev
->una_mbox64
= pci_alloc_consistent(adapter
->pdev
,
1007 sizeof(mbox64_t
), &raid_dev
->una_mbox64_dma
);
1009 if (!raid_dev
->una_mbox64
) {
1010 con_log(CL_ANN
, (KERN_WARNING
1011 "megaraid: out of memory, %s %d\n", __func__
,
1015 memset(raid_dev
->una_mbox64
, 0, sizeof(mbox64_t
));
1018 * Align the mailbox at 16-byte boundary
1020 raid_dev
->mbox
= &raid_dev
->una_mbox64
->mbox32
;
1022 raid_dev
->mbox
= (mbox_t
*)((((unsigned long)raid_dev
->mbox
) + 15) &
1025 raid_dev
->mbox64
= (mbox64_t
*)(((unsigned long)raid_dev
->mbox
) - 8);
1027 align
= ((void *)raid_dev
->mbox
-
1028 ((void *)&raid_dev
->una_mbox64
->mbox32
));
1030 raid_dev
->mbox_dma
= (unsigned long)raid_dev
->una_mbox64_dma
+ 8 +
1033 // Allocate memory for commands issued internally
1034 adapter
->ibuf
= pci_alloc_consistent(pdev
, MBOX_IBUF_SIZE
,
1035 &adapter
->ibuf_dma_h
);
1036 if (!adapter
->ibuf
) {
1038 con_log(CL_ANN
, (KERN_WARNING
1039 "megaraid: out of memory, %s %d\n", __func__
,
1042 goto out_free_common_mbox
;
1044 memset(adapter
->ibuf
, 0, MBOX_IBUF_SIZE
);
1046 // Allocate memory for our SCSI Command Blocks and their associated
1050 * Allocate memory for the base list of scb. Later allocate memory for
1051 * CCBs and embedded components of each CCB and point the pointers in
1052 * scb to the allocated components
1053 * NOTE: The code to allocate SCB will be duplicated in all the LLD
1054 * since the calling routine does not yet know the number of available
1057 adapter
->kscb_list
= kcalloc(MBOX_MAX_SCSI_CMDS
, sizeof(scb_t
), GFP_KERNEL
);
1059 if (adapter
->kscb_list
== NULL
) {
1060 con_log(CL_ANN
, (KERN_WARNING
1061 "megaraid: out of memory, %s %d\n", __func__
,
1066 // memory allocation for our command packets
1067 if (megaraid_mbox_setup_dma_pools(adapter
) != 0) {
1068 con_log(CL_ANN
, (KERN_WARNING
1069 "megaraid: out of memory, %s %d\n", __func__
,
1071 goto out_free_scb_list
;
1074 // Adjust the scb pointers and link in the free pool
1075 epthru_pci_blk
= raid_dev
->epthru_pool
;
1076 sg_pci_blk
= raid_dev
->sg_pool
;
1077 mbox_pci_blk
= raid_dev
->mbox_pool
;
1079 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
; i
++) {
1080 scb
= adapter
->kscb_list
+ i
;
1081 ccb
= raid_dev
->ccb_list
+ i
;
1083 ccb
->mbox
= (mbox_t
*)(mbox_pci_blk
[i
].vaddr
+ 16);
1084 ccb
->raw_mbox
= (uint8_t *)ccb
->mbox
;
1085 ccb
->mbox64
= (mbox64_t
*)(mbox_pci_blk
[i
].vaddr
+ 8);
1086 ccb
->mbox_dma_h
= (unsigned long)mbox_pci_blk
[i
].dma_addr
+ 16;
1088 // make sure the mailbox is aligned properly
1089 if (ccb
->mbox_dma_h
& 0x0F) {
1090 con_log(CL_ANN
, (KERN_CRIT
1091 "megaraid mbox: not aligned on 16-bytes\n"));
1093 goto out_teardown_dma_pools
;
1096 ccb
->epthru
= (mraid_epassthru_t
*)
1097 epthru_pci_blk
[i
].vaddr
;
1098 ccb
->epthru_dma_h
= epthru_pci_blk
[i
].dma_addr
;
1099 ccb
->pthru
= (mraid_passthru_t
*)ccb
->epthru
;
1100 ccb
->pthru_dma_h
= ccb
->epthru_dma_h
;
1103 ccb
->sgl64
= (mbox_sgl64
*)sg_pci_blk
[i
].vaddr
;
1104 ccb
->sgl_dma_h
= sg_pci_blk
[i
].dma_addr
;
1105 ccb
->sgl32
= (mbox_sgl32
*)ccb
->sgl64
;
1107 scb
->ccb
= (caddr_t
)ccb
;
1110 scb
->sno
= i
; // command index
1113 scb
->state
= SCB_FREE
;
1114 scb
->dma_direction
= PCI_DMA_NONE
;
1115 scb
->dma_type
= MRAID_DMA_NONE
;
1116 scb
->dev_channel
= -1;
1117 scb
->dev_target
= -1;
1119 // put scb in the free pool
1120 list_add_tail(&scb
->list
, &adapter
->kscb_pool
);
1125 out_teardown_dma_pools
:
1126 megaraid_mbox_teardown_dma_pools(adapter
);
1128 kfree(adapter
->kscb_list
);
1130 pci_free_consistent(pdev
, MBOX_IBUF_SIZE
, (void *)adapter
->ibuf
,
1131 adapter
->ibuf_dma_h
);
1132 out_free_common_mbox
:
1133 pci_free_consistent(adapter
->pdev
, sizeof(mbox64_t
),
1134 (caddr_t
)raid_dev
->una_mbox64
, raid_dev
->una_mbox64_dma
);
1141 * megaraid_free_cmd_packets - free memory
1142 * @adapter : soft state of the raid controller
1144 * Release memory resources allocated for commands.
1147 megaraid_free_cmd_packets(adapter_t
*adapter
)
1149 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
1151 megaraid_mbox_teardown_dma_pools(adapter
);
1153 kfree(adapter
->kscb_list
);
1155 pci_free_consistent(adapter
->pdev
, MBOX_IBUF_SIZE
,
1156 (void *)adapter
->ibuf
, adapter
->ibuf_dma_h
);
1158 pci_free_consistent(adapter
->pdev
, sizeof(mbox64_t
),
1159 (caddr_t
)raid_dev
->una_mbox64
, raid_dev
->una_mbox64_dma
);
1165 * megaraid_mbox_setup_dma_pools - setup dma pool for command packets
1166 * @adapter : HBA soft state
1168 * Setup the dma pools for mailbox, passthru and extended passthru structures,
1169 * and scatter-gather lists.
1172 megaraid_mbox_setup_dma_pools(adapter_t
*adapter
)
1174 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
1175 struct mraid_pci_blk
*epthru_pci_blk
;
1176 struct mraid_pci_blk
*sg_pci_blk
;
1177 struct mraid_pci_blk
*mbox_pci_blk
;
1182 // Allocate memory for 16-bytes aligned mailboxes
1183 raid_dev
->mbox_pool_handle
= pci_pool_create("megaraid mbox pool",
1185 sizeof(mbox64_t
) + 16,
1188 if (raid_dev
->mbox_pool_handle
== NULL
) {
1189 goto fail_setup_dma_pool
;
1192 mbox_pci_blk
= raid_dev
->mbox_pool
;
1193 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
; i
++) {
1194 mbox_pci_blk
[i
].vaddr
= pci_pool_alloc(
1195 raid_dev
->mbox_pool_handle
,
1197 &mbox_pci_blk
[i
].dma_addr
);
1198 if (!mbox_pci_blk
[i
].vaddr
) {
1199 goto fail_setup_dma_pool
;
1204 * Allocate memory for each embedded passthru strucuture pointer
1205 * Request for a 128 bytes aligned structure for each passthru command
1207 * Since passthru and extended passthru commands are exclusive, they
1208 * share common memory pool. Passthru structures piggyback on memory
1209 * allocted to extended passthru since passthru is smaller of the two
1211 raid_dev
->epthru_pool_handle
= pci_pool_create("megaraid mbox pthru",
1212 adapter
->pdev
, sizeof(mraid_epassthru_t
), 128, 0);
1214 if (raid_dev
->epthru_pool_handle
== NULL
) {
1215 goto fail_setup_dma_pool
;
1218 epthru_pci_blk
= raid_dev
->epthru_pool
;
1219 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
; i
++) {
1220 epthru_pci_blk
[i
].vaddr
= pci_pool_alloc(
1221 raid_dev
->epthru_pool_handle
,
1223 &epthru_pci_blk
[i
].dma_addr
);
1224 if (!epthru_pci_blk
[i
].vaddr
) {
1225 goto fail_setup_dma_pool
;
1230 // Allocate memory for each scatter-gather list. Request for 512 bytes
1231 // alignment for each sg list
1232 raid_dev
->sg_pool_handle
= pci_pool_create("megaraid mbox sg",
1234 sizeof(mbox_sgl64
) * MBOX_MAX_SG_SIZE
,
1237 if (raid_dev
->sg_pool_handle
== NULL
) {
1238 goto fail_setup_dma_pool
;
1241 sg_pci_blk
= raid_dev
->sg_pool
;
1242 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
; i
++) {
1243 sg_pci_blk
[i
].vaddr
= pci_pool_alloc(
1244 raid_dev
->sg_pool_handle
,
1246 &sg_pci_blk
[i
].dma_addr
);
1247 if (!sg_pci_blk
[i
].vaddr
) {
1248 goto fail_setup_dma_pool
;
1254 fail_setup_dma_pool
:
1255 megaraid_mbox_teardown_dma_pools(adapter
);
1261 * megaraid_mbox_teardown_dma_pools - teardown dma pools for command packets
1262 * @adapter : HBA soft state
1264 * Teardown the dma pool for mailbox, passthru and extended passthru
1265 * structures, and scatter-gather lists.
1268 megaraid_mbox_teardown_dma_pools(adapter_t
*adapter
)
1270 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
1271 struct mraid_pci_blk
*epthru_pci_blk
;
1272 struct mraid_pci_blk
*sg_pci_blk
;
1273 struct mraid_pci_blk
*mbox_pci_blk
;
1277 sg_pci_blk
= raid_dev
->sg_pool
;
1278 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
&& sg_pci_blk
[i
].vaddr
; i
++) {
1279 pci_pool_free(raid_dev
->sg_pool_handle
, sg_pci_blk
[i
].vaddr
,
1280 sg_pci_blk
[i
].dma_addr
);
1282 if (raid_dev
->sg_pool_handle
)
1283 pci_pool_destroy(raid_dev
->sg_pool_handle
);
1286 epthru_pci_blk
= raid_dev
->epthru_pool
;
1287 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
&& epthru_pci_blk
[i
].vaddr
; i
++) {
1288 pci_pool_free(raid_dev
->epthru_pool_handle
,
1289 epthru_pci_blk
[i
].vaddr
, epthru_pci_blk
[i
].dma_addr
);
1291 if (raid_dev
->epthru_pool_handle
)
1292 pci_pool_destroy(raid_dev
->epthru_pool_handle
);
1295 mbox_pci_blk
= raid_dev
->mbox_pool
;
1296 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
&& mbox_pci_blk
[i
].vaddr
; i
++) {
1297 pci_pool_free(raid_dev
->mbox_pool_handle
,
1298 mbox_pci_blk
[i
].vaddr
, mbox_pci_blk
[i
].dma_addr
);
1300 if (raid_dev
->mbox_pool_handle
)
1301 pci_pool_destroy(raid_dev
->mbox_pool_handle
);
1308 * megaraid_alloc_scb - detach and return a scb from the free list
1309 * @adapter : controller's soft state
1310 * @scp : pointer to the scsi command to be executed
1312 * Return the scb from the head of the free list. %NULL if there are none
1316 megaraid_alloc_scb(adapter_t
*adapter
, struct scsi_cmnd
*scp
)
1318 struct list_head
*head
= &adapter
->kscb_pool
;
1320 unsigned long flags
;
1322 // detach scb from free pool
1323 spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter
), flags
);
1325 if (list_empty(head
)) {
1326 spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter
), flags
);
1330 scb
= list_entry(head
->next
, scb_t
, list
);
1331 list_del_init(&scb
->list
);
1333 spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter
), flags
);
1335 scb
->state
= SCB_ACTIVE
;
1337 scb
->dma_type
= MRAID_DMA_NONE
;
1344 * megaraid_dealloc_scb - return the scb to the free pool
1345 * @adapter : controller's soft state
1346 * @scb : scb to be freed
1348 * Return the scb back to the free list of scbs. The caller must 'flush' the
1349 * SCB before calling us. E.g., performing pci_unamp and/or pci_sync etc.
1350 * NOTE NOTE: Make sure the scb is not on any list before calling this
1354 megaraid_dealloc_scb(adapter_t
*adapter
, scb_t
*scb
)
1356 unsigned long flags
;
1358 // put scb in the free pool
1359 scb
->state
= SCB_FREE
;
1361 spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter
), flags
);
1363 list_add(&scb
->list
, &adapter
->kscb_pool
);
1365 spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter
), flags
);
1372 * megaraid_mbox_mksgl - make the scatter-gather list
1373 * @adapter : controller's soft state
1374 * @scb : scsi control block
1376 * Prepare the scatter-gather list.
1379 megaraid_mbox_mksgl(adapter_t
*adapter
, scb_t
*scb
)
1381 struct scatterlist
*sgl
;
1383 struct scsi_cmnd
*scp
;
1389 ccb
= (mbox_ccb_t
*)scb
->ccb
;
1391 sgcnt
= scsi_dma_map(scp
);
1392 BUG_ON(sgcnt
< 0 || sgcnt
> adapter
->sglen
);
1394 // no mapping required if no data to be transferred
1398 scb
->dma_type
= MRAID_DMA_WSG
;
1400 scsi_for_each_sg(scp
, sgl
, sgcnt
, i
) {
1401 ccb
->sgl64
[i
].address
= sg_dma_address(sgl
);
1402 ccb
->sgl64
[i
].length
= sg_dma_len(sgl
);
1405 // Return count of SG nodes
1411 * mbox_post_cmd - issue a mailbox command
1412 * @adapter : controller's soft state
1413 * @scb : command to be issued
1415 * Post the command to the controller if mailbox is available.
1418 mbox_post_cmd(adapter_t
*adapter
, scb_t
*scb
)
1420 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
1424 unsigned long flags
;
1428 ccb
= (mbox_ccb_t
*)scb
->ccb
;
1429 mbox
= raid_dev
->mbox
;
1430 mbox64
= raid_dev
->mbox64
;
1433 * Check for busy mailbox. If it is, return failure - the caller
1434 * should retry later.
1436 spin_lock_irqsave(MAILBOX_LOCK(raid_dev
), flags
);
1438 if (unlikely(mbox
->busy
)) {
1443 } while(mbox
->busy
&& (i
< max_mbox_busy_wait
));
1447 spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev
), flags
);
1454 // Copy this command's mailbox data into "adapter's" mailbox
1455 memcpy((caddr_t
)mbox64
, (caddr_t
)ccb
->mbox64
, 22);
1456 mbox
->cmdid
= scb
->sno
;
1458 adapter
->outstanding_cmds
++;
1460 if (scb
->dma_direction
== PCI_DMA_TODEVICE
)
1461 pci_dma_sync_sg_for_device(adapter
->pdev
,
1462 scsi_sglist(scb
->scp
),
1463 scsi_sg_count(scb
->scp
),
1466 mbox
->busy
= 1; // Set busy
1471 WRINDOOR(raid_dev
, raid_dev
->mbox_dma
| 0x1);
1473 spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev
), flags
);
1480 * megaraid_queue_command - generic queue entry point for all LLDs
1481 * @scp : pointer to the scsi command to be executed
1482 * @done : callback routine to be called after the cmd has be completed
1484 * Queue entry point for mailbox based controllers.
1487 megaraid_queue_command_lck(struct scsi_cmnd
*scp
, void (*done
)(struct scsi_cmnd
*))
1493 adapter
= SCP2ADAPTER(scp
);
1494 scp
->scsi_done
= done
;
1498 * Allocate and build a SCB request
1499 * if_busy flag will be set if megaraid_mbox_build_cmd() command could
1500 * not allocate scb. We will return non-zero status in that case.
1501 * NOTE: scb can be null even though certain commands completed
1502 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, it would
1503 * return 0 in that case, and we would do the callback right away.
1506 scb
= megaraid_mbox_build_cmd(adapter
, scp
, &if_busy
);
1507 if (!scb
) { // command already completed
1512 megaraid_mbox_runpendq(adapter
, scb
);
1516 static DEF_SCSI_QCMD(megaraid_queue_command
)
1519 * megaraid_mbox_build_cmd - transform the mid-layer scsi commands
1520 * @adapter : controller's soft state
1521 * @scp : mid-layer scsi command pointer
1522 * @busy : set if request could not be completed because of lack of
1525 * Transform the mid-layer scsi command to megaraid firmware lingua.
1526 * Convert the command issued by mid-layer to format understood by megaraid
1527 * firmware. We also complete certain commands without sending them to firmware.
1530 megaraid_mbox_build_cmd(adapter_t
*adapter
, struct scsi_cmnd
*scp
, int *busy
)
1532 mraid_device_t
*rdev
= ADAP2RAIDDEV(adapter
);
1537 mraid_passthru_t
*pthru
;
1541 char skip
[] = "skipping";
1542 char scan
[] = "scanning";
1547 * Get the appropriate device map for the device this command is
1550 MRAID_GET_DEVICE_MAP(adapter
, scp
, channel
, target
, islogical
);
1553 * Logical drive commands
1556 switch (scp
->cmnd
[0]) {
1557 case TEST_UNIT_READY
:
1559 * Do we support clustering and is the support enabled
1560 * If no, return success always
1563 scp
->result
= (DID_OK
<< 16);
1567 if (!(scb
= megaraid_alloc_scb(adapter
, scp
))) {
1568 scp
->result
= (DID_ERROR
<< 16);
1573 scb
->dma_direction
= scp
->sc_data_direction
;
1574 scb
->dev_channel
= 0xFF;
1575 scb
->dev_target
= target
;
1576 ccb
= (mbox_ccb_t
*)scb
->ccb
;
1579 * The command id will be provided by the command
1582 ccb
->raw_mbox
[0] = CLUSTER_CMD
;
1583 ccb
->raw_mbox
[2] = RESERVATION_STATUS
;
1584 ccb
->raw_mbox
[3] = target
;
1590 struct scatterlist
*sgl
;
1593 sgl
= scsi_sglist(scp
);
1595 vaddr
= (caddr_t
) sg_virt(&sgl
[0]);
1597 memset(vaddr
, 0, scp
->cmnd
[4]);
1600 con_log(CL_ANN
, (KERN_WARNING
1601 "megaraid mailbox: invalid sg:%d\n",
1605 scp
->result
= (DID_OK
<< 16);
1610 * Display the channel scan for logical drives
1611 * Do not display scan for a channel if already done.
1613 if (!(rdev
->last_disp
& (1L << SCP2CHANNEL(scp
)))) {
1615 con_log(CL_ANN
, (KERN_INFO
1616 "scsi[%d]: scanning scsi channel %d",
1617 adapter
->host
->host_no
,
1621 " [virtual] for logical drives\n"));
1623 rdev
->last_disp
|= (1L << SCP2CHANNEL(scp
));
1626 if (scp
->cmnd
[1] & MEGA_SCSI_INQ_EVPD
) {
1627 scp
->sense_buffer
[0] = 0x70;
1628 scp
->sense_buffer
[2] = ILLEGAL_REQUEST
;
1629 scp
->sense_buffer
[12] = MEGA_INVALID_FIELD_IN_CDB
;
1630 scp
->result
= CHECK_CONDITION
<< 1;
1638 * Do not allow LUN > 0 for logical drives and
1639 * requests for more than 40 logical drives
1642 scp
->result
= (DID_BAD_TARGET
<< 16);
1645 if ((target
% 0x80) >= MAX_LOGICAL_DRIVES_40LD
) {
1646 scp
->result
= (DID_BAD_TARGET
<< 16);
1651 /* Allocate a SCB and initialize passthru */
1652 if (!(scb
= megaraid_alloc_scb(adapter
, scp
))) {
1653 scp
->result
= (DID_ERROR
<< 16);
1658 ccb
= (mbox_ccb_t
*)scb
->ccb
;
1659 scb
->dev_channel
= 0xFF;
1660 scb
->dev_target
= target
;
1663 mbox64
= ccb
->mbox64
;
1667 pthru
->reqsenselen
= 14;
1668 pthru
->islogical
= 1;
1669 pthru
->logdrv
= target
;
1670 pthru
->cdblen
= scp
->cmd_len
;
1671 memcpy(pthru
->cdb
, scp
->cmnd
, scp
->cmd_len
);
1673 mbox
->cmd
= MBOXCMD_PASSTHRU64
;
1674 scb
->dma_direction
= scp
->sc_data_direction
;
1676 pthru
->dataxferlen
= scsi_bufflen(scp
);
1677 pthru
->dataxferaddr
= ccb
->sgl_dma_h
;
1678 pthru
->numsge
= megaraid_mbox_mksgl(adapter
,
1681 mbox
->xferaddr
= 0xFFFFFFFF;
1682 mbox64
->xferaddr_lo
= (uint32_t )ccb
->pthru_dma_h
;
1683 mbox64
->xferaddr_hi
= 0;
1695 * Allocate a SCB and initialize mailbox
1697 if (!(scb
= megaraid_alloc_scb(adapter
, scp
))) {
1698 scp
->result
= (DID_ERROR
<< 16);
1702 ccb
= (mbox_ccb_t
*)scb
->ccb
;
1703 scb
->dev_channel
= 0xFF;
1704 scb
->dev_target
= target
;
1706 mbox64
= ccb
->mbox64
;
1707 mbox
->logdrv
= target
;
1710 * A little HACK: 2nd bit is zero for all scsi read
1711 * commands and is set for all scsi write commands
1713 mbox
->cmd
= (scp
->cmnd
[0] & 0x02) ? MBOXCMD_LWRITE64
:
1717 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1719 if (scp
->cmd_len
== 6) {
1720 mbox
->numsectors
= (uint32_t)scp
->cmnd
[4];
1722 ((uint32_t)scp
->cmnd
[1] << 16) |
1723 ((uint32_t)scp
->cmnd
[2] << 8) |
1724 (uint32_t)scp
->cmnd
[3];
1726 mbox
->lba
&= 0x1FFFFF;
1730 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1732 else if (scp
->cmd_len
== 10) {
1734 (uint32_t)scp
->cmnd
[8] |
1735 ((uint32_t)scp
->cmnd
[7] << 8);
1737 ((uint32_t)scp
->cmnd
[2] << 24) |
1738 ((uint32_t)scp
->cmnd
[3] << 16) |
1739 ((uint32_t)scp
->cmnd
[4] << 8) |
1740 (uint32_t)scp
->cmnd
[5];
1744 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1746 else if (scp
->cmd_len
== 12) {
1748 ((uint32_t)scp
->cmnd
[2] << 24) |
1749 ((uint32_t)scp
->cmnd
[3] << 16) |
1750 ((uint32_t)scp
->cmnd
[4] << 8) |
1751 (uint32_t)scp
->cmnd
[5];
1754 ((uint32_t)scp
->cmnd
[6] << 24) |
1755 ((uint32_t)scp
->cmnd
[7] << 16) |
1756 ((uint32_t)scp
->cmnd
[8] << 8) |
1757 (uint32_t)scp
->cmnd
[9];
1760 con_log(CL_ANN
, (KERN_WARNING
1761 "megaraid: unsupported CDB length\n"));
1763 megaraid_dealloc_scb(adapter
, scb
);
1765 scp
->result
= (DID_ERROR
<< 16);
1769 scb
->dma_direction
= scp
->sc_data_direction
;
1771 // Calculate Scatter-Gather info
1772 mbox64
->xferaddr_lo
= (uint32_t )ccb
->sgl_dma_h
;
1773 mbox
->numsge
= megaraid_mbox_mksgl(adapter
,
1775 mbox
->xferaddr
= 0xFFFFFFFF;
1776 mbox64
->xferaddr_hi
= 0;
1783 * Do we support clustering and is the support enabled
1786 scp
->result
= (DID_BAD_TARGET
<< 16);
1791 * Allocate a SCB and initialize mailbox
1793 if (!(scb
= megaraid_alloc_scb(adapter
, scp
))) {
1794 scp
->result
= (DID_ERROR
<< 16);
1799 ccb
= (mbox_ccb_t
*)scb
->ccb
;
1800 scb
->dev_channel
= 0xFF;
1801 scb
->dev_target
= target
;
1802 ccb
->raw_mbox
[0] = CLUSTER_CMD
;
1803 ccb
->raw_mbox
[2] = (scp
->cmnd
[0] == RESERVE
) ?
1804 RESERVE_LD
: RELEASE_LD
;
1806 ccb
->raw_mbox
[3] = target
;
1807 scb
->dma_direction
= scp
->sc_data_direction
;
1812 scp
->result
= (DID_BAD_TARGET
<< 16);
1816 else { // Passthru device commands
1818 // Do not allow access to target id > 15 or LUN > 7
1819 if (target
> 15 || SCP2LUN(scp
) > 7) {
1820 scp
->result
= (DID_BAD_TARGET
<< 16);
1824 // if fast load option was set and scan for last device is
1825 // over, reset the fast_load flag so that during a possible
1826 // next scan, devices can be made available
1827 if (rdev
->fast_load
&& (target
== 15) &&
1828 (SCP2CHANNEL(scp
) == adapter
->max_channel
-1)) {
1830 con_log(CL_ANN
, (KERN_INFO
1831 "megaraid[%d]: physical device scan re-enabled\n",
1832 adapter
->host
->host_no
));
1833 rdev
->fast_load
= 0;
1837 * Display the channel scan for physical devices
1839 if (!(rdev
->last_disp
& (1L << SCP2CHANNEL(scp
)))) {
1841 ss
= rdev
->fast_load
? skip
: scan
;
1843 con_log(CL_ANN
, (KERN_INFO
1844 "scsi[%d]: %s scsi channel %d [Phy %d]",
1845 adapter
->host
->host_no
, ss
, SCP2CHANNEL(scp
),
1849 " for non-raid devices\n"));
1851 rdev
->last_disp
|= (1L << SCP2CHANNEL(scp
));
1854 // disable channel sweep if fast load option given
1855 if (rdev
->fast_load
) {
1856 scp
->result
= (DID_BAD_TARGET
<< 16);
1860 // Allocate a SCB and initialize passthru
1861 if (!(scb
= megaraid_alloc_scb(adapter
, scp
))) {
1862 scp
->result
= (DID_ERROR
<< 16);
1867 ccb
= (mbox_ccb_t
*)scb
->ccb
;
1868 scb
->dev_channel
= channel
;
1869 scb
->dev_target
= target
;
1870 scb
->dma_direction
= scp
->sc_data_direction
;
1872 mbox64
= ccb
->mbox64
;
1874 // Does this firmware support extended CDBs
1875 if (adapter
->max_cdb_sz
== 16) {
1876 mbox
->cmd
= MBOXCMD_EXTPTHRU
;
1878 megaraid_mbox_prepare_epthru(adapter
, scb
, scp
);
1880 mbox64
->xferaddr_lo
= (uint32_t)ccb
->epthru_dma_h
;
1881 mbox64
->xferaddr_hi
= 0;
1882 mbox
->xferaddr
= 0xFFFFFFFF;
1885 mbox
->cmd
= MBOXCMD_PASSTHRU64
;
1887 megaraid_mbox_prepare_pthru(adapter
, scb
, scp
);
1889 mbox64
->xferaddr_lo
= (uint32_t)ccb
->pthru_dma_h
;
1890 mbox64
->xferaddr_hi
= 0;
1891 mbox
->xferaddr
= 0xFFFFFFFF;
1901 * megaraid_mbox_runpendq - execute commands queued in the pending queue
1902 * @adapter : controller's soft state
1903 * @scb_q : SCB to be queued in the pending list
1905 * Scan the pending list for commands which are not yet issued and try to
1906 * post to the controller. The SCB can be a null pointer, which would indicate
1907 * no SCB to be queue, just try to execute the ones in the pending list.
1909 * NOTE: We do not actually traverse the pending list. The SCBs are plucked
1910 * out from the head of the pending list. If it is successfully issued, the
1911 * next SCB is at the head now.
1914 megaraid_mbox_runpendq(adapter_t
*adapter
, scb_t
*scb_q
)
1917 unsigned long flags
;
1919 spin_lock_irqsave(PENDING_LIST_LOCK(adapter
), flags
);
1922 scb_q
->state
= SCB_PENDQ
;
1923 list_add_tail(&scb_q
->list
, &adapter
->pend_list
);
1926 // if the adapter in not in quiescent mode, post the commands to FW
1927 if (adapter
->quiescent
) {
1928 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter
), flags
);
1932 while (!list_empty(&adapter
->pend_list
)) {
1934 assert_spin_locked(PENDING_LIST_LOCK(adapter
));
1936 scb
= list_entry(adapter
->pend_list
.next
, scb_t
, list
);
1938 // remove the scb from the pending list and try to
1939 // issue. If we are unable to issue it, put back in
1940 // the pending list and return
1942 list_del_init(&scb
->list
);
1944 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter
), flags
);
1946 // if mailbox was busy, return SCB back to pending
1947 // list. Make sure to add at the head, since that's
1948 // where it would have been removed from
1950 scb
->state
= SCB_ISSUED
;
1952 if (mbox_post_cmd(adapter
, scb
) != 0) {
1954 spin_lock_irqsave(PENDING_LIST_LOCK(adapter
), flags
);
1956 scb
->state
= SCB_PENDQ
;
1958 list_add(&scb
->list
, &adapter
->pend_list
);
1960 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter
),
1966 spin_lock_irqsave(PENDING_LIST_LOCK(adapter
), flags
);
1969 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter
), flags
);
1977 * megaraid_mbox_prepare_pthru - prepare a command for physical devices
1978 * @adapter : pointer to controller's soft state
1979 * @scb : scsi control block
1980 * @scp : scsi command from the mid-layer
1982 * Prepare a command for the scsi physical devices.
1985 megaraid_mbox_prepare_pthru(adapter_t
*adapter
, scb_t
*scb
,
1986 struct scsi_cmnd
*scp
)
1989 mraid_passthru_t
*pthru
;
1993 ccb
= (mbox_ccb_t
*)scb
->ccb
;
1995 channel
= scb
->dev_channel
;
1996 target
= scb
->dev_target
;
1998 // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout
2001 pthru
->islogical
= 0;
2003 pthru
->target
= (channel
<< 4) | target
;
2004 pthru
->logdrv
= SCP2LUN(scp
);
2005 pthru
->reqsenselen
= 14;
2006 pthru
->cdblen
= scp
->cmd_len
;
2008 memcpy(pthru
->cdb
, scp
->cmnd
, scp
->cmd_len
);
2010 if (scsi_bufflen(scp
)) {
2011 pthru
->dataxferlen
= scsi_bufflen(scp
);
2012 pthru
->dataxferaddr
= ccb
->sgl_dma_h
;
2013 pthru
->numsge
= megaraid_mbox_mksgl(adapter
, scb
);
2016 pthru
->dataxferaddr
= 0;
2017 pthru
->dataxferlen
= 0;
2025 * megaraid_mbox_prepare_epthru - prepare a command for physical devices
2026 * @adapter : pointer to controller's soft state
2027 * @scb : scsi control block
2028 * @scp : scsi command from the mid-layer
2030 * Prepare a command for the scsi physical devices. This rountine prepares
2031 * commands for devices which can take extended CDBs (>10 bytes).
2034 megaraid_mbox_prepare_epthru(adapter_t
*adapter
, scb_t
*scb
,
2035 struct scsi_cmnd
*scp
)
2038 mraid_epassthru_t
*epthru
;
2042 ccb
= (mbox_ccb_t
*)scb
->ccb
;
2043 epthru
= ccb
->epthru
;
2044 channel
= scb
->dev_channel
;
2045 target
= scb
->dev_target
;
2047 // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout
2048 epthru
->timeout
= 4;
2050 epthru
->islogical
= 0;
2051 epthru
->channel
= 0;
2052 epthru
->target
= (channel
<< 4) | target
;
2053 epthru
->logdrv
= SCP2LUN(scp
);
2054 epthru
->reqsenselen
= 14;
2055 epthru
->cdblen
= scp
->cmd_len
;
2057 memcpy(epthru
->cdb
, scp
->cmnd
, scp
->cmd_len
);
2059 if (scsi_bufflen(scp
)) {
2060 epthru
->dataxferlen
= scsi_bufflen(scp
);
2061 epthru
->dataxferaddr
= ccb
->sgl_dma_h
;
2062 epthru
->numsge
= megaraid_mbox_mksgl(adapter
, scb
);
2065 epthru
->dataxferaddr
= 0;
2066 epthru
->dataxferlen
= 0;
2074 * megaraid_ack_sequence - interrupt ack sequence for memory mapped HBAs
2075 * @adapter : controller's soft state
2077 * Interrupt acknowledgement sequence for memory mapped HBAs. Find out the
2078 * completed command and put them on the completed list for later processing.
2080 * Returns: 1 if the interrupt is valid, 0 otherwise
2083 megaraid_ack_sequence(adapter_t
*adapter
)
2085 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
2089 uint8_t completed
[MBOX_MAX_FIRMWARE_STATUS
];
2090 struct list_head clist
;
2093 unsigned long flags
;
2097 mbox
= raid_dev
->mbox
;
2099 // move the SCBs from the firmware completed array to our local list
2100 INIT_LIST_HEAD(&clist
);
2102 // loop till F/W has more commands for us to complete
2104 spin_lock_irqsave(MAILBOX_LOCK(raid_dev
), flags
);
2107 * Check if a valid interrupt is pending. If found, force the
2108 * interrupt line low.
2110 dword
= RDOUTDOOR(raid_dev
);
2111 if (dword
!= 0x10001234) break;
2115 WROUTDOOR(raid_dev
, 0x10001234);
2118 // wait for valid numstatus to post
2119 for (i
= 0; i
< 0xFFFFF; i
++) {
2120 if (mbox
->numstatus
!= 0xFF) {
2121 nstatus
= mbox
->numstatus
;
2126 mbox
->numstatus
= 0xFF;
2128 adapter
->outstanding_cmds
-= nstatus
;
2130 for (i
= 0; i
< nstatus
; i
++) {
2132 // wait for valid command index to post
2133 for (j
= 0; j
< 0xFFFFF; j
++) {
2134 if (mbox
->completed
[i
] != 0xFF) break;
2137 completed
[i
] = mbox
->completed
[i
];
2138 mbox
->completed
[i
] = 0xFF;
2140 if (completed
[i
] == 0xFF) {
2141 con_log(CL_ANN
, (KERN_CRIT
2142 "megaraid: command posting timed out\n"));
2148 // Get SCB associated with this command id
2149 if (completed
[i
] >= MBOX_MAX_SCSI_CMDS
) {
2151 scb
= adapter
->uscb_list
+ (completed
[i
] -
2152 MBOX_MAX_SCSI_CMDS
);
2156 scb
= adapter
->kscb_list
+ completed
[i
];
2159 scb
->status
= mbox
->status
;
2160 list_add_tail(&scb
->list
, &clist
);
2163 // Acknowledge interrupt
2164 WRINDOOR(raid_dev
, 0x02);
2168 spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev
), flags
);
2171 // put the completed commands in the completed list. DPC would
2172 // complete these commands later
2173 spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter
), flags
);
2175 list_splice(&clist
, &adapter
->completed_list
);
2177 spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter
), flags
);
2180 // schedule the DPC if there is some work for it
2182 tasklet_schedule(&adapter
->dpc_h
);
2189 * megaraid_isr - isr for memory based mailbox based controllers
2191 * @devp : pointer to our soft state
2193 * Interrupt service routine for memory-mapped mailbox controllers.
2196 megaraid_isr(int irq
, void *devp
)
2198 adapter_t
*adapter
= devp
;
2201 handled
= megaraid_ack_sequence(adapter
);
2203 /* Loop through any pending requests */
2204 if (!adapter
->quiescent
) {
2205 megaraid_mbox_runpendq(adapter
, NULL
);
2208 return IRQ_RETVAL(handled
);
2213 * megaraid_mbox_sync_scb - sync kernel buffers
2214 * @adapter : controller's soft state
2215 * @scb : pointer to the resource packet
2217 * DMA sync if required.
2220 megaraid_mbox_sync_scb(adapter_t
*adapter
, scb_t
*scb
)
2224 ccb
= (mbox_ccb_t
*)scb
->ccb
;
2226 if (scb
->dma_direction
== PCI_DMA_FROMDEVICE
)
2227 pci_dma_sync_sg_for_cpu(adapter
->pdev
,
2228 scsi_sglist(scb
->scp
),
2229 scsi_sg_count(scb
->scp
),
2230 PCI_DMA_FROMDEVICE
);
2232 scsi_dma_unmap(scb
->scp
);
2238 * megaraid_mbox_dpc - the tasklet to complete the commands from completed list
2239 * @devp : pointer to HBA soft state
2241 * Pick up the commands from the completed list and send back to the owners.
2242 * This is a reentrant function and does not assume any locks are held while
2243 * it is being called.
2246 megaraid_mbox_dpc(unsigned long devp
)
2248 adapter_t
*adapter
= (adapter_t
*)devp
;
2249 mraid_device_t
*raid_dev
;
2250 struct list_head clist
;
2251 struct scatterlist
*sgl
;
2254 struct scsi_cmnd
*scp
;
2255 mraid_passthru_t
*pthru
;
2256 mraid_epassthru_t
*epthru
;
2262 unsigned long flags
;
2268 if (!adapter
) return;
2270 raid_dev
= ADAP2RAIDDEV(adapter
);
2272 // move the SCBs from the completed list to our local list
2273 INIT_LIST_HEAD(&clist
);
2275 spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter
), flags
);
2277 list_splice_init(&adapter
->completed_list
, &clist
);
2279 spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter
), flags
);
2282 list_for_each_entry_safe(scb
, tmp
, &clist
, list
) {
2284 status
= scb
->status
;
2286 ccb
= (mbox_ccb_t
*)scb
->ccb
;
2288 epthru
= ccb
->epthru
;
2291 // Make sure f/w has completed a valid command
2292 if (scb
->state
!= SCB_ISSUED
) {
2293 con_log(CL_ANN
, (KERN_CRIT
2294 "megaraid critical err: invalid command %d:%d:%p\n",
2295 scb
->sno
, scb
->state
, scp
));
2297 continue; // Must never happen!
2300 // check for the management command and complete it right away
2301 if (scb
->sno
>= MBOX_MAX_SCSI_CMDS
) {
2302 scb
->state
= SCB_FREE
;
2303 scb
->status
= status
;
2305 // remove from local clist
2306 list_del_init(&scb
->list
);
2308 kioc
= (uioc_t
*)scb
->gp
;
2311 megaraid_mbox_mm_done(adapter
, scb
);
2316 // Was an abort issued for this command earlier
2317 if (scb
->state
& SCB_ABORT
) {
2318 con_log(CL_ANN
, (KERN_NOTICE
2319 "megaraid: aborted cmd [%x] completed\n",
2324 * If the inquiry came of a disk drive which is not part of
2325 * any RAID array, expose it to the kernel. For this to be
2326 * enabled, user must set the "megaraid_expose_unconf_disks"
2327 * flag to 1 by specifying it on module parameter list.
2328 * This would enable data migration off drives from other
2331 islogical
= MRAID_IS_LOGICAL(adapter
, scp
);
2332 if (scp
->cmnd
[0] == INQUIRY
&& status
== 0 && islogical
== 0
2333 && IS_RAID_CH(raid_dev
, scb
->dev_channel
)) {
2335 sgl
= scsi_sglist(scp
);
2337 c
= *(unsigned char *) sg_virt(&sgl
[0]);
2339 con_log(CL_ANN
, (KERN_WARNING
2340 "megaraid mailbox: invalid sg:%d\n",
2345 if ((c
& 0x1F ) == TYPE_DISK
) {
2346 pdev_index
= (scb
->dev_channel
* 16) +
2349 raid_dev
->pdrv_state
[pdev_index
] & 0x0F;
2351 if (pdev_state
== PDRV_ONLINE
||
2352 pdev_state
== PDRV_FAILED
||
2353 pdev_state
== PDRV_RBLD
||
2354 pdev_state
== PDRV_HOTSPARE
||
2355 megaraid_expose_unconf_disks
== 0) {
2362 // Convert MegaRAID status to Linux error code
2367 scp
->result
= (DID_OK
<< 16);
2372 /* set sense_buffer and result fields */
2373 if (mbox
->cmd
== MBOXCMD_PASSTHRU
||
2374 mbox
->cmd
== MBOXCMD_PASSTHRU64
) {
2376 memcpy(scp
->sense_buffer
, pthru
->reqsensearea
,
2379 scp
->result
= DRIVER_SENSE
<< 24 |
2380 DID_OK
<< 16 | CHECK_CONDITION
<< 1;
2383 if (mbox
->cmd
== MBOXCMD_EXTPTHRU
) {
2385 memcpy(scp
->sense_buffer
,
2386 epthru
->reqsensearea
, 14);
2388 scp
->result
= DRIVER_SENSE
<< 24 |
2390 CHECK_CONDITION
<< 1;
2392 scp
->sense_buffer
[0] = 0x70;
2393 scp
->sense_buffer
[2] = ABORTED_COMMAND
;
2394 scp
->result
= CHECK_CONDITION
<< 1;
2401 scp
->result
= DID_BUS_BUSY
<< 16 | status
;
2407 * If TEST_UNIT_READY fails, we know RESERVATION_STATUS
2410 if (scp
->cmnd
[0] == TEST_UNIT_READY
) {
2411 scp
->result
= DID_ERROR
<< 16 |
2412 RESERVATION_CONFLICT
<< 1;
2416 * Error code returned is 1 if Reserve or Release
2417 * failed or the input parameter is invalid
2419 if (status
== 1 && (scp
->cmnd
[0] == RESERVE
||
2420 scp
->cmnd
[0] == RELEASE
)) {
2422 scp
->result
= DID_ERROR
<< 16 |
2423 RESERVATION_CONFLICT
<< 1;
2426 scp
->result
= DID_BAD_TARGET
<< 16 | status
;
2430 // print a debug message for all failed commands
2432 megaraid_mbox_display_scb(adapter
, scb
);
2435 // Free our internal resources and call the mid-layer callback
2437 megaraid_mbox_sync_scb(adapter
, scb
);
2439 // remove from local clist
2440 list_del_init(&scb
->list
);
2442 // put back in free list
2443 megaraid_dealloc_scb(adapter
, scb
);
2445 // send the scsi packet back to kernel
2446 scp
->scsi_done(scp
);
2454 * megaraid_abort_handler - abort the scsi command
2455 * @scp : command to be aborted
2457 * Abort a previous SCSI request. Only commands on the pending list can be
2458 * aborted. All the commands issued to the F/W must complete.
2461 megaraid_abort_handler(struct scsi_cmnd
*scp
)
2464 mraid_device_t
*raid_dev
;
2468 unsigned long flags
;
2472 adapter
= SCP2ADAPTER(scp
);
2473 raid_dev
= ADAP2RAIDDEV(adapter
);
2475 con_log(CL_ANN
, (KERN_WARNING
2476 "megaraid: aborting cmd=%x <c=%d t=%d l=%d>\n",
2477 scp
->cmnd
[0], SCP2CHANNEL(scp
),
2478 SCP2TARGET(scp
), SCP2LUN(scp
)));
2480 // If FW has stopped responding, simply return failure
2481 if (raid_dev
->hw_error
) {
2482 con_log(CL_ANN
, (KERN_NOTICE
2483 "megaraid: hw error, not aborting\n"));
2487 // There might a race here, where the command was completed by the
2488 // firmware and now it is on the completed list. Before we could
2489 // complete the command to the kernel in dpc, the abort came.
2490 // Find out if this is the case to avoid the race.
2492 spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter
), flags
);
2493 list_for_each_entry_safe(scb
, tmp
, &adapter
->completed_list
, list
) {
2495 if (scb
->scp
== scp
) { // Found command
2497 list_del_init(&scb
->list
); // from completed list
2499 con_log(CL_ANN
, (KERN_WARNING
2500 "megaraid: %d[%d:%d], abort from completed list\n",
2501 scb
->sno
, scb
->dev_channel
, scb
->dev_target
));
2503 scp
->result
= (DID_ABORT
<< 16);
2504 scp
->scsi_done(scp
);
2506 megaraid_dealloc_scb(adapter
, scb
);
2508 spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter
),
2514 spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter
), flags
);
2517 // Find out if this command is still on the pending list. If it is and
2518 // was never issued, abort and return success. If the command is owned
2519 // by the firmware, we must wait for it to complete by the FW.
2520 spin_lock_irqsave(PENDING_LIST_LOCK(adapter
), flags
);
2521 list_for_each_entry_safe(scb
, tmp
, &adapter
->pend_list
, list
) {
2523 if (scb
->scp
== scp
) { // Found command
2525 list_del_init(&scb
->list
); // from pending list
2527 ASSERT(!(scb
->state
& SCB_ISSUED
));
2529 con_log(CL_ANN
, (KERN_WARNING
2530 "megaraid abort: [%d:%d], driver owner\n",
2531 scb
->dev_channel
, scb
->dev_target
));
2533 scp
->result
= (DID_ABORT
<< 16);
2534 scp
->scsi_done(scp
);
2536 megaraid_dealloc_scb(adapter
, scb
);
2538 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter
),
2544 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter
), flags
);
2547 // Check do we even own this command, in which case this would be
2548 // owned by the firmware. The only way to locate the FW scb is to
2549 // traverse through the list of all SCB, since driver does not
2550 // maintain these SCBs on any list
2552 spin_lock_irq(&adapter
->lock
);
2553 for (i
= 0; i
< MBOX_MAX_SCSI_CMDS
; i
++) {
2554 scb
= adapter
->kscb_list
+ i
;
2556 if (scb
->scp
== scp
) {
2560 if (!(scb
->state
& SCB_ISSUED
)) {
2561 con_log(CL_ANN
, (KERN_WARNING
2562 "megaraid abort: %d[%d:%d], invalid state\n",
2563 scb
->sno
, scb
->dev_channel
, scb
->dev_target
));
2567 con_log(CL_ANN
, (KERN_WARNING
2568 "megaraid abort: %d[%d:%d], fw owner\n",
2569 scb
->sno
, scb
->dev_channel
, scb
->dev_target
));
2573 spin_unlock_irq(&adapter
->lock
);
2576 con_log(CL_ANN
, (KERN_WARNING
"megaraid abort: do now own\n"));
2578 // FIXME: Should there be a callback for this command?
2582 // We cannot actually abort a command owned by firmware, return
2583 // failure and wait for reset. In host reset handler, we will find out
2584 // if the HBA is still live
2589 * megaraid_reset_handler - device reset hadler for mailbox based driver
2590 * @scp : reference command
2592 * Reset handler for the mailbox based controller. First try to find out if
2593 * the FW is still live, in which case the outstanding commands counter mut go
2594 * down to 0. If that happens, also issue the reservation reset command to
2595 * relinquish (possible) reservations on the logical drives connected to this
2599 megaraid_reset_handler(struct scsi_cmnd
*scp
)
2604 mraid_device_t
*raid_dev
;
2605 unsigned long flags
;
2606 uint8_t raw_mbox
[sizeof(mbox_t
)];
2608 int recovery_window
;
2613 adapter
= SCP2ADAPTER(scp
);
2614 raid_dev
= ADAP2RAIDDEV(adapter
);
2616 // return failure if adapter is not responding
2617 if (raid_dev
->hw_error
) {
2618 con_log(CL_ANN
, (KERN_NOTICE
2619 "megaraid: hw error, cannot reset\n"));
2624 // Under exceptional conditions, FW can take up to 3 minutes to
2625 // complete command processing. Wait for additional 2 minutes for the
2626 // pending commands counter to go down to 0. If it doesn't, let the
2627 // controller be marked offline
2628 // Also, reset all the commands currently owned by the driver
2629 spin_lock_irqsave(PENDING_LIST_LOCK(adapter
), flags
);
2630 list_for_each_entry_safe(scb
, tmp
, &adapter
->pend_list
, list
) {
2631 list_del_init(&scb
->list
); // from pending list
2633 if (scb
->sno
>= MBOX_MAX_SCSI_CMDS
) {
2634 con_log(CL_ANN
, (KERN_WARNING
2635 "megaraid: IOCTL packet with %d[%d:%d] being reset\n",
2636 scb
->sno
, scb
->dev_channel
, scb
->dev_target
));
2640 kioc
= (uioc_t
*)scb
->gp
;
2641 kioc
->status
= -EFAULT
;
2643 megaraid_mbox_mm_done(adapter
, scb
);
2645 if (scb
->scp
== scp
) { // Found command
2646 con_log(CL_ANN
, (KERN_WARNING
2647 "megaraid: %d[%d:%d], reset from pending list\n",
2648 scb
->sno
, scb
->dev_channel
, scb
->dev_target
));
2650 con_log(CL_ANN
, (KERN_WARNING
2651 "megaraid: IO packet with %d[%d:%d] being reset\n",
2652 scb
->sno
, scb
->dev_channel
, scb
->dev_target
));
2655 scb
->scp
->result
= (DID_RESET
<< 16);
2656 scb
->scp
->scsi_done(scb
->scp
);
2658 megaraid_dealloc_scb(adapter
, scb
);
2661 spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter
), flags
);
2663 if (adapter
->outstanding_cmds
) {
2664 con_log(CL_ANN
, (KERN_NOTICE
2665 "megaraid: %d outstanding commands. Max wait %d sec\n",
2666 adapter
->outstanding_cmds
,
2667 (MBOX_RESET_WAIT
+ MBOX_RESET_EXT_WAIT
)));
2670 recovery_window
= MBOX_RESET_WAIT
+ MBOX_RESET_EXT_WAIT
;
2672 recovering
= adapter
->outstanding_cmds
;
2674 for (i
= 0; i
< recovery_window
; i
++) {
2676 megaraid_ack_sequence(adapter
);
2678 // print a message once every 5 seconds only
2681 "megaraid mbox: Wait for %d commands to complete:%d\n",
2682 adapter
->outstanding_cmds
,
2683 (MBOX_RESET_WAIT
+ MBOX_RESET_EXT_WAIT
) - i
));
2686 // bailout if no recovery happened in reset time
2687 if (adapter
->outstanding_cmds
== 0) {
2694 spin_lock(&adapter
->lock
);
2696 // If still outstanding commands, bail out
2697 if (adapter
->outstanding_cmds
) {
2698 con_log(CL_ANN
, (KERN_WARNING
2699 "megaraid mbox: critical hardware error!\n"));
2701 raid_dev
->hw_error
= 1;
2707 con_log(CL_ANN
, (KERN_NOTICE
2708 "megaraid mbox: reset sequence completed successfully\n"));
2712 // If the controller supports clustering, reset reservations
2718 // clear reservations if any
2719 raw_mbox
[0] = CLUSTER_CMD
;
2720 raw_mbox
[2] = RESET_RESERVATIONS
;
2723 if (mbox_post_sync_cmd_fast(adapter
, raw_mbox
) == 0) {
2725 (KERN_INFO
"megaraid: reservation reset\n"));
2729 con_log(CL_ANN
, (KERN_WARNING
2730 "megaraid: reservation reset failed\n"));
2734 spin_unlock_irq(&adapter
->lock
);
2739 * START: internal commands library
2741 * This section of the driver has the common routine used by the driver and
2742 * also has all the FW routines
2746 * mbox_post_sync_cmd() - blocking command to the mailbox based controllers
2747 * @adapter : controller's soft state
2748 * @raw_mbox : the mailbox
2750 * Issue a scb in synchronous and non-interrupt mode for mailbox based
2754 mbox_post_sync_cmd(adapter_t
*adapter
, uint8_t raw_mbox
[])
2756 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
2763 mbox64
= raid_dev
->mbox64
;
2764 mbox
= raid_dev
->mbox
;
2767 * Wait until mailbox is free
2769 if (megaraid_busywait_mbox(raid_dev
) != 0)
2770 goto blocked_mailbox
;
2773 * Copy mailbox data into host structure
2775 memcpy((caddr_t
)mbox
, (caddr_t
)raw_mbox
, 16);
2780 mbox
->numstatus
= 0xFF;
2781 mbox
->status
= 0xFF;
2784 WRINDOOR(raid_dev
, raid_dev
->mbox_dma
| 0x1);
2786 // wait for maximum 1 second for status to post. If the status is not
2787 // available within 1 second, assume FW is initializing and wait
2788 // for an extended amount of time
2789 if (mbox
->numstatus
== 0xFF) { // status not yet available
2792 for (i
= 0; mbox
->numstatus
== 0xFF && i
< 1000; i
++) {
2799 con_log(CL_ANN
, (KERN_NOTICE
2800 "megaraid mailbox: wait for FW to boot "));
2802 for (i
= 0; (mbox
->numstatus
== 0xFF) &&
2803 (i
< MBOX_RESET_WAIT
); i
++) {
2805 con_log(CL_ANN
, ("\b\b\b\b\b[%03d]",
2806 MBOX_RESET_WAIT
- i
));
2810 if (i
== MBOX_RESET_WAIT
) {
2813 "\nmegaraid mailbox: status not available\n"));
2817 con_log(CL_ANN
, ("\b\b\b\b\b[ok] \n"));
2821 // wait for maximum 1 second for poll semaphore
2822 if (mbox
->poll
!= 0x77) {
2825 for (i
= 0; (mbox
->poll
!= 0x77) && (i
< 1000); i
++) {
2831 con_log(CL_ANN
, (KERN_WARNING
2832 "megaraid mailbox: could not get poll semaphore\n"));
2837 WRINDOOR(raid_dev
, raid_dev
->mbox_dma
| 0x2);
2840 // wait for maximum 1 second for acknowledgement
2841 if (RDINDOOR(raid_dev
) & 0x2) {
2844 for (i
= 0; (RDINDOOR(raid_dev
) & 0x2) && (i
< 1000); i
++) {
2850 con_log(CL_ANN
, (KERN_WARNING
2851 "megaraid mailbox: could not acknowledge\n"));
2858 status
= mbox
->status
;
2860 // invalidate the completed command id array. After command
2861 // completion, firmware would write the valid id.
2862 mbox
->numstatus
= 0xFF;
2863 mbox
->status
= 0xFF;
2864 for (i
= 0; i
< MBOX_MAX_FIRMWARE_STATUS
; i
++) {
2865 mbox
->completed
[i
] = 0xFF;
2872 con_log(CL_ANN
, (KERN_WARNING
"megaraid: blocked mailbox\n") );
2878 * mbox_post_sync_cmd_fast - blocking command to the mailbox based controllers
2879 * @adapter : controller's soft state
2880 * @raw_mbox : the mailbox
2882 * Issue a scb in synchronous and non-interrupt mode for mailbox based
2883 * controllers. This is a faster version of the synchronous command and
2884 * therefore can be called in interrupt-context as well.
2887 mbox_post_sync_cmd_fast(adapter_t
*adapter
, uint8_t raw_mbox
[])
2889 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
2894 mbox
= raid_dev
->mbox
;
2896 // return immediately if the mailbox is busy
2897 if (mbox
->busy
) return -1;
2899 // Copy mailbox data into host structure
2900 memcpy((caddr_t
)mbox
, (caddr_t
)raw_mbox
, 14);
2905 mbox
->numstatus
= 0xFF;
2906 mbox
->status
= 0xFF;
2909 WRINDOOR(raid_dev
, raid_dev
->mbox_dma
| 0x1);
2911 for (i
= 0; i
< MBOX_SYNC_WAIT_CNT
; i
++) {
2912 if (mbox
->numstatus
!= 0xFF) break;
2914 udelay(MBOX_SYNC_DELAY_200
);
2917 if (i
== MBOX_SYNC_WAIT_CNT
) {
2918 // We may need to re-calibrate the counter
2919 con_log(CL_ANN
, (KERN_CRIT
2920 "megaraid: fast sync command timed out\n"));
2923 WRINDOOR(raid_dev
, raid_dev
->mbox_dma
| 0x2);
2926 return mbox
->status
;
2931 * megaraid_busywait_mbox() - Wait until the controller's mailbox is available
2932 * @raid_dev : RAID device (HBA) soft state
2934 * Wait until the controller's mailbox is available to accept more commands.
2935 * Wait for at most 1 second.
2938 megaraid_busywait_mbox(mraid_device_t
*raid_dev
)
2940 mbox_t
*mbox
= raid_dev
->mbox
;
2945 for (i
= 0; mbox
->busy
&& i
< 1000; i
++)
2949 if (i
< 1000) return 0;
2955 * megaraid_mbox_product_info - some static information about the controller
2956 * @adapter : our soft state
2958 * Issue commands to the controller to grab some parameters required by our
2962 megaraid_mbox_product_info(adapter_t
*adapter
)
2964 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
2966 uint8_t raw_mbox
[sizeof(mbox_t
)];
2967 mraid_pinfo_t
*pinfo
;
2968 dma_addr_t pinfo_dma_h
;
2969 mraid_inquiry3_t
*mraid_inq3
;
2973 memset((caddr_t
)raw_mbox
, 0, sizeof(raw_mbox
));
2974 mbox
= (mbox_t
*)raw_mbox
;
2977 * Issue an ENQUIRY3 command to find out certain adapter parameters,
2978 * e.g., max channels, max commands etc.
2980 pinfo
= pci_alloc_consistent(adapter
->pdev
, sizeof(mraid_pinfo_t
),
2983 if (pinfo
== NULL
) {
2984 con_log(CL_ANN
, (KERN_WARNING
2985 "megaraid: out of memory, %s %d\n", __func__
,
2990 memset(pinfo
, 0, sizeof(mraid_pinfo_t
));
2992 mbox
->xferaddr
= (uint32_t)adapter
->ibuf_dma_h
;
2993 memset((void *)adapter
->ibuf
, 0, MBOX_IBUF_SIZE
);
2995 raw_mbox
[0] = FC_NEW_CONFIG
;
2996 raw_mbox
[2] = NC_SUBOP_ENQUIRY3
;
2997 raw_mbox
[3] = ENQ3_GET_SOLICITED_FULL
;
2999 // Issue the command
3000 if (mbox_post_sync_cmd(adapter
, raw_mbox
) != 0) {
3002 con_log(CL_ANN
, (KERN_WARNING
"megaraid: Inquiry3 failed\n"));
3004 pci_free_consistent(adapter
->pdev
, sizeof(mraid_pinfo_t
),
3005 pinfo
, pinfo_dma_h
);
3011 * Collect information about state of each physical drive
3012 * attached to the controller. We will expose all the disks
3013 * which are not part of RAID
3015 mraid_inq3
= (mraid_inquiry3_t
*)adapter
->ibuf
;
3016 for (i
= 0; i
< MBOX_MAX_PHYSICAL_DRIVES
; i
++) {
3017 raid_dev
->pdrv_state
[i
] = mraid_inq3
->pdrv_state
[i
];
3021 * Get product info for information like number of channels,
3022 * maximum commands supported.
3024 memset((caddr_t
)raw_mbox
, 0, sizeof(raw_mbox
));
3025 mbox
->xferaddr
= (uint32_t)pinfo_dma_h
;
3027 raw_mbox
[0] = FC_NEW_CONFIG
;
3028 raw_mbox
[2] = NC_SUBOP_PRODUCT_INFO
;
3030 if (mbox_post_sync_cmd(adapter
, raw_mbox
) != 0) {
3032 con_log(CL_ANN
, (KERN_WARNING
3033 "megaraid: product info failed\n"));
3035 pci_free_consistent(adapter
->pdev
, sizeof(mraid_pinfo_t
),
3036 pinfo
, pinfo_dma_h
);
3042 * Setup some parameters for host, as required by our caller
3044 adapter
->max_channel
= pinfo
->nchannels
;
3047 * we will export all the logical drives on a single channel.
3048 * Add 1 since inquires do not come for inititor ID
3050 adapter
->max_target
= MAX_LOGICAL_DRIVES_40LD
+ 1;
3051 adapter
->max_lun
= 8; // up to 8 LUNs for non-disk devices
3054 * These are the maximum outstanding commands for the scsi-layer
3056 adapter
->max_cmds
= MBOX_MAX_SCSI_CMDS
;
3058 memset(adapter
->fw_version
, 0, VERSION_SIZE
);
3059 memset(adapter
->bios_version
, 0, VERSION_SIZE
);
3061 memcpy(adapter
->fw_version
, pinfo
->fw_version
, 4);
3062 adapter
->fw_version
[4] = 0;
3064 memcpy(adapter
->bios_version
, pinfo
->bios_version
, 4);
3065 adapter
->bios_version
[4] = 0;
3067 con_log(CL_ANN
, (KERN_NOTICE
3068 "megaraid: fw version:[%s] bios version:[%s]\n",
3069 adapter
->fw_version
, adapter
->bios_version
));
3071 pci_free_consistent(adapter
->pdev
, sizeof(mraid_pinfo_t
), pinfo
,
3080 * megaraid_mbox_extended_cdb - check for support for extended CDBs
3081 * @adapter : soft state for the controller
3083 * This routine check whether the controller in question supports extended
3084 * ( > 10 bytes ) CDBs.
3087 megaraid_mbox_extended_cdb(adapter_t
*adapter
)
3090 uint8_t raw_mbox
[sizeof(mbox_t
)];
3093 mbox
= (mbox_t
*)raw_mbox
;
3095 memset((caddr_t
)raw_mbox
, 0, sizeof(raw_mbox
));
3096 mbox
->xferaddr
= (uint32_t)adapter
->ibuf_dma_h
;
3098 memset((void *)adapter
->ibuf
, 0, MBOX_IBUF_SIZE
);
3100 raw_mbox
[0] = MAIN_MISC_OPCODE
;
3101 raw_mbox
[2] = SUPPORT_EXT_CDB
;
3107 if (mbox_post_sync_cmd(adapter
, raw_mbox
) != 0) {
3116 * megaraid_mbox_support_ha - Do we support clustering
3117 * @adapter : soft state for the controller
3118 * @init_id : ID of the initiator
3120 * Determine if the firmware supports clustering and the ID of the initiator.
3123 megaraid_mbox_support_ha(adapter_t
*adapter
, uint16_t *init_id
)
3126 uint8_t raw_mbox
[sizeof(mbox_t
)];
3130 mbox
= (mbox_t
*)raw_mbox
;
3132 memset((caddr_t
)raw_mbox
, 0, sizeof(raw_mbox
));
3134 mbox
->xferaddr
= (uint32_t)adapter
->ibuf_dma_h
;
3136 memset((void *)adapter
->ibuf
, 0, MBOX_IBUF_SIZE
);
3138 raw_mbox
[0] = GET_TARGET_ID
;
3140 // Issue the command
3143 if (mbox_post_sync_cmd(adapter
, raw_mbox
) == 0) {
3145 *init_id
= *(uint8_t *)adapter
->ibuf
;
3147 con_log(CL_ANN
, (KERN_INFO
3148 "megaraid: cluster firmware, initiator ID: %d\n",
3159 * megaraid_mbox_support_random_del - Do we support random deletion
3160 * @adapter : soft state for the controller
3162 * Determine if the firmware supports random deletion.
3163 * Return: 1 is operation supported, 0 otherwise
3166 megaraid_mbox_support_random_del(adapter_t
*adapter
)
3169 uint8_t raw_mbox
[sizeof(mbox_t
)];
3173 * Newer firmware on Dell CERC expect a different
3174 * random deletion handling, so disable it.
3176 if (adapter
->pdev
->vendor
== PCI_VENDOR_ID_AMI
&&
3177 adapter
->pdev
->device
== PCI_DEVICE_ID_AMI_MEGARAID3
&&
3178 adapter
->pdev
->subsystem_vendor
== PCI_VENDOR_ID_DELL
&&
3179 adapter
->pdev
->subsystem_device
== PCI_SUBSYS_ID_CERC_ATA100_4CH
&&
3180 (adapter
->fw_version
[0] > '6' ||
3181 (adapter
->fw_version
[0] == '6' &&
3182 adapter
->fw_version
[2] > '6') ||
3183 (adapter
->fw_version
[0] == '6'
3184 && adapter
->fw_version
[2] == '6'
3185 && adapter
->fw_version
[3] > '1'))) {
3186 con_log(CL_DLEVEL1
, ("megaraid: disable random deletion\n"));
3190 mbox
= (mbox_t
*)raw_mbox
;
3192 memset((caddr_t
)raw_mbox
, 0, sizeof(mbox_t
));
3194 raw_mbox
[0] = FC_DEL_LOGDRV
;
3195 raw_mbox
[2] = OP_SUP_DEL_LOGDRV
;
3197 // Issue the command
3199 if (mbox_post_sync_cmd(adapter
, raw_mbox
) == 0) {
3201 con_log(CL_DLEVEL1
, ("megaraid: supports random deletion\n"));
3211 * megaraid_mbox_get_max_sg - maximum sg elements supported by the firmware
3212 * @adapter : soft state for the controller
3214 * Find out the maximum number of scatter-gather elements supported by the
3218 megaraid_mbox_get_max_sg(adapter_t
*adapter
)
3221 uint8_t raw_mbox
[sizeof(mbox_t
)];
3225 mbox
= (mbox_t
*)raw_mbox
;
3227 memset((caddr_t
)raw_mbox
, 0, sizeof(mbox_t
));
3229 mbox
->xferaddr
= (uint32_t)adapter
->ibuf_dma_h
;
3231 memset((void *)adapter
->ibuf
, 0, MBOX_IBUF_SIZE
);
3233 raw_mbox
[0] = MAIN_MISC_OPCODE
;
3234 raw_mbox
[2] = GET_MAX_SG_SUPPORT
;
3236 // Issue the command
3237 if (mbox_post_sync_cmd(adapter
, raw_mbox
) == 0) {
3238 nsg
= *(uint8_t *)adapter
->ibuf
;
3241 nsg
= MBOX_DEFAULT_SG_SIZE
;
3244 if (nsg
> MBOX_MAX_SG_SIZE
) nsg
= MBOX_MAX_SG_SIZE
;
3251 * megaraid_mbox_enum_raid_scsi - enumerate the RAID and SCSI channels
3252 * @adapter : soft state for the controller
3254 * Enumerate the RAID and SCSI channels for ROMB platforms so that channels
3255 * can be exported as regular SCSI channels.
3258 megaraid_mbox_enum_raid_scsi(adapter_t
*adapter
)
3260 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
3262 uint8_t raw_mbox
[sizeof(mbox_t
)];
3265 mbox
= (mbox_t
*)raw_mbox
;
3267 memset((caddr_t
)raw_mbox
, 0, sizeof(mbox_t
));
3269 mbox
->xferaddr
= (uint32_t)adapter
->ibuf_dma_h
;
3271 memset((void *)adapter
->ibuf
, 0, MBOX_IBUF_SIZE
);
3273 raw_mbox
[0] = CHNL_CLASS
;
3274 raw_mbox
[2] = GET_CHNL_CLASS
;
3276 // Issue the command. If the command fails, all channels are RAID
3278 raid_dev
->channel_class
= 0xFF;
3279 if (mbox_post_sync_cmd(adapter
, raw_mbox
) == 0) {
3280 raid_dev
->channel_class
= *(uint8_t *)adapter
->ibuf
;
3288 * megaraid_mbox_flush_cache - flush adapter and disks cache
3289 * @adapter : soft state for the controller
3291 * Flush adapter cache followed by disks cache.
3294 megaraid_mbox_flush_cache(adapter_t
*adapter
)
3297 uint8_t raw_mbox
[sizeof(mbox_t
)];
3300 mbox
= (mbox_t
*)raw_mbox
;
3302 memset((caddr_t
)raw_mbox
, 0, sizeof(mbox_t
));
3304 raw_mbox
[0] = FLUSH_ADAPTER
;
3306 if (mbox_post_sync_cmd(adapter
, raw_mbox
) != 0) {
3307 con_log(CL_ANN
, ("megaraid: flush adapter failed\n"));
3310 raw_mbox
[0] = FLUSH_SYSTEM
;
3312 if (mbox_post_sync_cmd(adapter
, raw_mbox
) != 0) {
3313 con_log(CL_ANN
, ("megaraid: flush disks cache failed\n"));
3321 * megaraid_mbox_fire_sync_cmd - fire the sync cmd
3322 * @adapter : soft state for the controller
3324 * Clears the pending cmds in FW and reinits its RAID structs.
3327 megaraid_mbox_fire_sync_cmd(adapter_t
*adapter
)
3330 uint8_t raw_mbox
[sizeof(mbox_t
)];
3331 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
3337 mbox
= (mbox_t
*)raw_mbox
;
3339 memset((caddr_t
)raw_mbox
, 0, sizeof(mbox_t
));
3343 mbox64
= raid_dev
->mbox64
;
3344 mbox
= raid_dev
->mbox
;
3346 /* Wait until mailbox is free */
3347 if (megaraid_busywait_mbox(raid_dev
) != 0) {
3349 goto blocked_mailbox
;
3352 /* Copy mailbox data into host structure */
3353 memcpy((caddr_t
)mbox
, (caddr_t
)raw_mbox
, 16);
3358 mbox
->numstatus
= 0;
3362 WRINDOOR(raid_dev
, raid_dev
->mbox_dma
| 0x1);
3364 /* Wait for maximum 1 min for status to post.
3365 * If the Firmware SUPPORTS the ABOVE COMMAND,
3366 * mbox->cmd will be set to 0
3368 * the firmware will reject the command with
3369 * mbox->numstatus set to 1
3374 while (!mbox
->numstatus
&& mbox
->cmd
== 0xFF) {
3378 if (i
> 1000 * 60) {
3383 if (mbox
->numstatus
== 1)
3384 status
= 1; /*cmd not supported*/
3386 /* Check for interrupt line */
3387 dword
= RDOUTDOOR(raid_dev
);
3388 WROUTDOOR(raid_dev
, dword
);
3389 WRINDOOR(raid_dev
,2);
3394 con_log(CL_ANN
, (KERN_WARNING
"megaraid: blocked mailbox\n"));
3399 * megaraid_mbox_display_scb - display SCB information, mostly debug purposes
3400 * @adapter : controller's soft state
3401 * @scb : SCB to be displayed
3402 * @level : debug level for console print
3404 * Diplay information about the given SCB iff the current debug level is
3408 megaraid_mbox_display_scb(adapter_t
*adapter
, scb_t
*scb
)
3411 struct scsi_cmnd
*scp
;
3417 ccb
= (mbox_ccb_t
*)scb
->ccb
;
3423 con_log(level
, (KERN_NOTICE
3424 "megaraid mailbox: status:%#x cmd:%#x id:%#x ", scb
->status
,
3425 mbox
->cmd
, scb
->sno
));
3427 con_log(level
, ("sec:%#x lba:%#x addr:%#x ld:%d sg:%d\n",
3428 mbox
->numsectors
, mbox
->lba
, mbox
->xferaddr
, mbox
->logdrv
,
3433 con_log(level
, (KERN_NOTICE
"scsi cmnd: "));
3435 for (i
= 0; i
< scp
->cmd_len
; i
++) {
3436 con_log(level
, ("%#2.02x ", scp
->cmnd
[i
]));
3439 con_log(level
, ("\n"));
3446 * megaraid_mbox_setup_device_map - manage device ids
3447 * @adapter : Driver's soft state
3449 * Manange the device ids to have an appropriate mapping between the kernel
3450 * scsi addresses and megaraid scsi and logical drive addresses. We export
3451 * scsi devices on their actual addresses, whereas the logical drives are
3452 * exported on a virtual scsi channel.
3455 megaraid_mbox_setup_device_map(adapter_t
*adapter
)
3461 * First fill the values on the logical drive channel
3463 for (t
= 0; t
< LSI_MAX_LOGICAL_DRIVES_64LD
; t
++)
3464 adapter
->device_ids
[adapter
->max_channel
][t
] =
3465 (t
< adapter
->init_id
) ? t
: t
- 1;
3467 adapter
->device_ids
[adapter
->max_channel
][adapter
->init_id
] = 0xFF;
3470 * Fill the values on the physical devices channels
3472 for (c
= 0; c
< adapter
->max_channel
; c
++)
3473 for (t
= 0; t
< LSI_MAX_LOGICAL_DRIVES_64LD
; t
++)
3474 adapter
->device_ids
[c
][t
] = (c
<< 8) | t
;
3479 * END: internal commands library
3483 * START: Interface for the common management module
3485 * This is the module, which interfaces with the common management module to
3486 * provide support for ioctl and sysfs
3490 * megaraid_cmm_register - register with the management module
3491 * @adapter : HBA soft state
3493 * Register with the management module, which allows applications to issue
3494 * ioctl calls to the drivers. This interface is used by the management module
3495 * to setup sysfs support as well.
3498 megaraid_cmm_register(adapter_t
*adapter
)
3500 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
3507 // Allocate memory for the base list of scb for management module.
3508 adapter
->uscb_list
= kcalloc(MBOX_MAX_USER_CMDS
, sizeof(scb_t
), GFP_KERNEL
);
3510 if (adapter
->uscb_list
== NULL
) {
3511 con_log(CL_ANN
, (KERN_WARNING
3512 "megaraid: out of memory, %s %d\n", __func__
,
3518 // Initialize the synchronization parameters for resources for
3519 // commands for management module
3520 INIT_LIST_HEAD(&adapter
->uscb_pool
);
3522 spin_lock_init(USER_FREE_LIST_LOCK(adapter
));
3526 // link all the packets. Note, CCB for commands, coming from the
3527 // commom management module, mailbox physical address are already
3528 // setup by it. We just need placeholder for that in our local command
3530 for (i
= 0; i
< MBOX_MAX_USER_CMDS
; i
++) {
3532 scb
= adapter
->uscb_list
+ i
;
3533 ccb
= raid_dev
->uccb_list
+ i
;
3535 scb
->ccb
= (caddr_t
)ccb
;
3536 ccb
->mbox64
= raid_dev
->umbox64
+ i
;
3537 ccb
->mbox
= &ccb
->mbox64
->mbox32
;
3538 ccb
->raw_mbox
= (uint8_t *)ccb
->mbox
;
3542 // COMMAND ID 0 - (MBOX_MAX_SCSI_CMDS-1) ARE RESERVED FOR
3543 // COMMANDS COMING FROM IO SUBSYSTEM (MID-LAYER)
3544 scb
->sno
= i
+ MBOX_MAX_SCSI_CMDS
;
3547 scb
->state
= SCB_FREE
;
3548 scb
->dma_direction
= PCI_DMA_NONE
;
3549 scb
->dma_type
= MRAID_DMA_NONE
;
3550 scb
->dev_channel
= -1;
3551 scb
->dev_target
= -1;
3553 // put scb in the free pool
3554 list_add_tail(&scb
->list
, &adapter
->uscb_pool
);
3557 adp
.unique_id
= adapter
->unique_id
;
3558 adp
.drvr_type
= DRVRTYPE_MBOX
;
3559 adp
.drvr_data
= (unsigned long)adapter
;
3560 adp
.pdev
= adapter
->pdev
;
3561 adp
.issue_uioc
= megaraid_mbox_mm_handler
;
3562 adp
.timeout
= MBOX_RESET_WAIT
+ MBOX_RESET_EXT_WAIT
;
3563 adp
.max_kioc
= MBOX_MAX_USER_CMDS
;
3565 if ((rval
= mraid_mm_register_adp(&adp
)) != 0) {
3567 con_log(CL_ANN
, (KERN_WARNING
3568 "megaraid mbox: did not register with CMM\n"));
3570 kfree(adapter
->uscb_list
);
3578 * megaraid_cmm_unregister - un-register with the management module
3579 * @adapter : HBA soft state
3581 * Un-register with the management module.
3582 * FIXME: mgmt module must return failure for unregister if it has pending
3586 megaraid_cmm_unregister(adapter_t
*adapter
)
3588 kfree(adapter
->uscb_list
);
3589 mraid_mm_unregister_adp(adapter
->unique_id
);
3595 * megaraid_mbox_mm_handler - interface for CMM to issue commands to LLD
3596 * @drvr_data : LLD specific data
3597 * @kioc : CMM interface packet
3598 * @action : command action
3600 * This routine is invoked whenever the Common Management Module (CMM) has a
3601 * command for us. The 'action' parameter specifies if this is a new command
3605 megaraid_mbox_mm_handler(unsigned long drvr_data
, uioc_t
*kioc
, uint32_t action
)
3609 if (action
!= IOCTL_ISSUE
) {
3610 con_log(CL_ANN
, (KERN_WARNING
3611 "megaraid: unsupported management action:%#2x\n",
3616 adapter
= (adapter_t
*)drvr_data
;
3618 // make sure this adapter is not being detached right now.
3619 if (atomic_read(&adapter
->being_detached
)) {
3620 con_log(CL_ANN
, (KERN_WARNING
3621 "megaraid: reject management request, detaching\n"));
3625 switch (kioc
->opcode
) {
3629 kioc
->status
= gather_hbainfo(adapter
, (mraid_hba_info_t
*)
3630 (unsigned long)kioc
->buf_vaddr
);
3634 return kioc
->status
;
3638 return megaraid_mbox_mm_command(adapter
, kioc
);
3641 kioc
->status
= (-EINVAL
);
3646 return 0; // not reached
3650 * megaraid_mbox_mm_command - issues commands routed through CMM
3651 * @adapter : HBA soft state
3652 * @kioc : management command packet
3654 * Issues commands, which are routed through the management module.
3657 megaraid_mbox_mm_command(adapter_t
*adapter
, uioc_t
*kioc
)
3659 struct list_head
*head
= &adapter
->uscb_pool
;
3664 unsigned long flags
;
3666 // detach one scb from free pool
3667 spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter
), flags
);
3669 if (list_empty(head
)) { // should never happen because of CMM
3671 con_log(CL_ANN
, (KERN_WARNING
3672 "megaraid mbox: bug in cmm handler, lost resources\n"));
3674 spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter
), flags
);
3679 scb
= list_entry(head
->next
, scb_t
, list
);
3680 list_del_init(&scb
->list
);
3682 spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter
), flags
);
3684 scb
->state
= SCB_ACTIVE
;
3685 scb
->dma_type
= MRAID_DMA_NONE
;
3686 scb
->dma_direction
= PCI_DMA_NONE
;
3688 ccb
= (mbox_ccb_t
*)scb
->ccb
;
3689 mbox64
= (mbox64_t
*)(unsigned long)kioc
->cmdbuf
;
3690 raw_mbox
= (uint8_t *)&mbox64
->mbox32
;
3692 memcpy(ccb
->mbox64
, mbox64
, sizeof(mbox64_t
));
3694 scb
->gp
= (unsigned long)kioc
;
3697 * If it is a logdrv random delete operation, we have to wait till
3698 * there are no outstanding cmds at the fw and then issue it directly
3700 if (raw_mbox
[0] == FC_DEL_LOGDRV
&& raw_mbox
[2] == OP_DEL_LOGDRV
) {
3702 if (wait_till_fw_empty(adapter
)) {
3703 con_log(CL_ANN
, (KERN_NOTICE
3704 "megaraid mbox: LD delete, timed out\n"));
3706 kioc
->status
= -ETIME
;
3710 megaraid_mbox_mm_done(adapter
, scb
);
3715 INIT_LIST_HEAD(&scb
->list
);
3717 scb
->state
= SCB_ISSUED
;
3718 if (mbox_post_cmd(adapter
, scb
) != 0) {
3720 con_log(CL_ANN
, (KERN_NOTICE
3721 "megaraid mbox: LD delete, mailbox busy\n"));
3723 kioc
->status
= -EBUSY
;
3727 megaraid_mbox_mm_done(adapter
, scb
);
3735 // put the command on the pending list and execute
3736 megaraid_mbox_runpendq(adapter
, scb
);
3743 wait_till_fw_empty(adapter_t
*adapter
)
3745 unsigned long flags
= 0;
3750 * Set the quiescent flag to stop issuing cmds to FW.
3752 spin_lock_irqsave(&adapter
->lock
, flags
);
3753 adapter
->quiescent
++;
3754 spin_unlock_irqrestore(&adapter
->lock
, flags
);
3757 * Wait till there are no more cmds outstanding at FW. Try for at most
3760 for (i
= 0; i
< 60 && adapter
->outstanding_cmds
; i
++) {
3761 con_log(CL_DLEVEL1
, (KERN_INFO
3762 "megaraid: FW has %d pending commands\n",
3763 adapter
->outstanding_cmds
));
3768 return adapter
->outstanding_cmds
;
3773 * megaraid_mbox_mm_done - callback for CMM commands
3774 * @adapter : HBA soft state
3775 * @scb : completed command
3777 * Callback routine for internal commands originated from the management
3781 megaraid_mbox_mm_done(adapter_t
*adapter
, scb_t
*scb
)
3786 unsigned long flags
;
3788 kioc
= (uioc_t
*)scb
->gp
;
3789 mbox64
= (mbox64_t
*)(unsigned long)kioc
->cmdbuf
;
3790 mbox64
->mbox32
.status
= scb
->status
;
3791 raw_mbox
= (uint8_t *)&mbox64
->mbox32
;
3794 // put scb in the free pool
3795 scb
->state
= SCB_FREE
;
3798 spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter
), flags
);
3800 list_add(&scb
->list
, &adapter
->uscb_pool
);
3802 spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter
), flags
);
3804 // if a delete logical drive operation succeeded, restart the
3806 if (raw_mbox
[0] == FC_DEL_LOGDRV
&& raw_mbox
[2] == OP_DEL_LOGDRV
) {
3808 adapter
->quiescent
--;
3810 megaraid_mbox_runpendq(adapter
, NULL
);
3820 * gather_hbainfo - HBA characteristics for the applications
3821 * @adapter : HBA soft state
3822 * @hinfo : pointer to the caller's host info strucuture
3825 gather_hbainfo(adapter_t
*adapter
, mraid_hba_info_t
*hinfo
)
3829 dmajor
= megaraid_mbox_version
[0];
3831 hinfo
->pci_vendor_id
= adapter
->pdev
->vendor
;
3832 hinfo
->pci_device_id
= adapter
->pdev
->device
;
3833 hinfo
->subsys_vendor_id
= adapter
->pdev
->subsystem_vendor
;
3834 hinfo
->subsys_device_id
= adapter
->pdev
->subsystem_device
;
3836 hinfo
->pci_bus
= adapter
->pdev
->bus
->number
;
3837 hinfo
->pci_dev_fn
= adapter
->pdev
->devfn
;
3838 hinfo
->pci_slot
= PCI_SLOT(adapter
->pdev
->devfn
);
3839 hinfo
->irq
= adapter
->host
->irq
;
3840 hinfo
->baseport
= ADAP2RAIDDEV(adapter
)->baseport
;
3842 hinfo
->unique_id
= (hinfo
->pci_bus
<< 8) | adapter
->pdev
->devfn
;
3843 hinfo
->host_no
= adapter
->host
->host_no
;
3849 * END: Interface for the common management module
3855 * megaraid_sysfs_alloc_resources - allocate sysfs related resources
3856 * @adapter : controller's soft state
3858 * Allocate packets required to issue FW calls whenever the sysfs attributes
3859 * are read. These attributes would require up-to-date information from the
3860 * FW. Also set up resources for mutual exclusion to share these resources and
3863 * Return 0 on success.
3864 * Return -ERROR_CODE on failure.
3867 megaraid_sysfs_alloc_resources(adapter_t
*adapter
)
3869 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
3872 raid_dev
->sysfs_uioc
= kmalloc(sizeof(uioc_t
), GFP_KERNEL
);
3874 raid_dev
->sysfs_mbox64
= kmalloc(sizeof(mbox64_t
), GFP_KERNEL
);
3876 raid_dev
->sysfs_buffer
= pci_alloc_consistent(adapter
->pdev
,
3877 PAGE_SIZE
, &raid_dev
->sysfs_buffer_dma
);
3879 if (!raid_dev
->sysfs_uioc
|| !raid_dev
->sysfs_mbox64
||
3880 !raid_dev
->sysfs_buffer
) {
3882 con_log(CL_ANN
, (KERN_WARNING
3883 "megaraid: out of memory, %s %d\n", __func__
,
3888 megaraid_sysfs_free_resources(adapter
);
3891 mutex_init(&raid_dev
->sysfs_mtx
);
3893 init_waitqueue_head(&raid_dev
->sysfs_wait_q
);
3900 * megaraid_sysfs_free_resources - free sysfs related resources
3901 * @adapter : controller's soft state
3903 * Free packets allocated for sysfs FW commands
3906 megaraid_sysfs_free_resources(adapter_t
*adapter
)
3908 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
3910 kfree(raid_dev
->sysfs_uioc
);
3911 kfree(raid_dev
->sysfs_mbox64
);
3913 if (raid_dev
->sysfs_buffer
) {
3914 pci_free_consistent(adapter
->pdev
, PAGE_SIZE
,
3915 raid_dev
->sysfs_buffer
, raid_dev
->sysfs_buffer_dma
);
3921 * megaraid_sysfs_get_ldmap_done - callback for get ldmap
3922 * @uioc : completed packet
3924 * Callback routine called in the ISR/tasklet context for get ldmap call
3927 megaraid_sysfs_get_ldmap_done(uioc_t
*uioc
)
3929 adapter_t
*adapter
= (adapter_t
*)uioc
->buf_vaddr
;
3930 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
3934 wake_up(&raid_dev
->sysfs_wait_q
);
3939 * megaraid_sysfs_get_ldmap_timeout - timeout handling for get ldmap
3940 * @data : timed out packet
3942 * Timeout routine to recover and return to application, in case the adapter
3943 * has stopped responding. A timeout of 60 seconds for this command seems like
3947 megaraid_sysfs_get_ldmap_timeout(unsigned long data
)
3949 uioc_t
*uioc
= (uioc_t
*)data
;
3950 adapter_t
*adapter
= (adapter_t
*)uioc
->buf_vaddr
;
3951 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
3953 uioc
->status
= -ETIME
;
3955 wake_up(&raid_dev
->sysfs_wait_q
);
3960 * megaraid_sysfs_get_ldmap - get update logical drive map
3961 * @adapter : controller's soft state
3963 * This routine will be called whenever user reads the logical drive
3964 * attributes, go get the current logical drive mapping table from the
3965 * firmware. We use the management API's to issue commands to the controller.
3967 * NOTE: The commands issuance functionality is not generalized and
3968 * implemented in context of "get ld map" command only. If required, the
3969 * command issuance logical can be trivially pulled out and implemented as a
3970 * standalone library. For now, this should suffice since there is no other
3971 * user of this interface.
3973 * Return 0 on success.
3974 * Return -1 on failure.
3977 megaraid_sysfs_get_ldmap(adapter_t
*adapter
)
3979 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
3984 struct timer_list sysfs_timer
;
3985 struct timer_list
*timerp
;
3990 * Allow only one read at a time to go through the sysfs attributes
3992 mutex_lock(&raid_dev
->sysfs_mtx
);
3994 uioc
= raid_dev
->sysfs_uioc
;
3995 mbox64
= raid_dev
->sysfs_mbox64
;
3996 ldmap
= raid_dev
->sysfs_buffer
;
3998 memset(uioc
, 0, sizeof(uioc_t
));
3999 memset(mbox64
, 0, sizeof(mbox64_t
));
4000 memset(ldmap
, 0, sizeof(raid_dev
->curr_ldmap
));
4002 mbox
= &mbox64
->mbox32
;
4003 raw_mbox
= (char *)mbox
;
4004 uioc
->cmdbuf
= (uint64_t)(unsigned long)mbox64
;
4005 uioc
->buf_vaddr
= (caddr_t
)adapter
;
4006 uioc
->status
= -ENODATA
;
4007 uioc
->done
= megaraid_sysfs_get_ldmap_done
;
4010 * Prepare the mailbox packet to get the current logical drive mapping
4013 mbox
->xferaddr
= (uint32_t)raid_dev
->sysfs_buffer_dma
;
4015 raw_mbox
[0] = FC_DEL_LOGDRV
;
4016 raw_mbox
[2] = OP_GET_LDID_MAP
;
4019 * Setup a timer to recover from a non-responding controller
4021 timerp
= &sysfs_timer
;
4024 timerp
->function
= megaraid_sysfs_get_ldmap_timeout
;
4025 timerp
->data
= (unsigned long)uioc
;
4026 timerp
->expires
= jiffies
+ 60 * HZ
;
4031 * Send the command to the firmware
4033 rval
= megaraid_mbox_mm_command(adapter
, uioc
);
4035 if (rval
== 0) { // command successfully issued
4036 wait_event(raid_dev
->sysfs_wait_q
, (uioc
->status
!= -ENODATA
));
4039 * Check if the command timed out
4041 if (uioc
->status
== -ETIME
) {
4042 con_log(CL_ANN
, (KERN_NOTICE
4043 "megaraid: sysfs get ld map timed out\n"));
4048 rval
= mbox
->status
;
4052 memcpy(raid_dev
->curr_ldmap
, ldmap
,
4053 sizeof(raid_dev
->curr_ldmap
));
4056 con_log(CL_ANN
, (KERN_NOTICE
4057 "megaraid: get ld map failed with %x\n", rval
));
4061 con_log(CL_ANN
, (KERN_NOTICE
4062 "megaraid: could not issue ldmap command:%x\n", rval
));
4066 del_timer_sync(timerp
);
4068 mutex_unlock(&raid_dev
->sysfs_mtx
);
4075 * megaraid_sysfs_show_app_hndl - display application handle for this adapter
4076 * @cdev : class device object representation for the host
4077 * @buf : buffer to send data to
4079 * Display the handle used by the applications while executing management
4080 * tasks on the adapter. We invoke a management module API to get the adapter
4081 * handle, since we do not interface with applications directly.
4084 megaraid_sysfs_show_app_hndl(struct device
*dev
, struct device_attribute
*attr
,
4087 struct Scsi_Host
*shost
= class_to_shost(dev
);
4088 adapter_t
*adapter
= (adapter_t
*)SCSIHOST2ADAP(shost
);
4091 app_hndl
= mraid_mm_adapter_app_handle(adapter
->unique_id
);
4093 return snprintf(buf
, 8, "%u\n", app_hndl
);
4098 * megaraid_sysfs_show_ldnum - display the logical drive number for this device
4099 * @dev : device object representation for the scsi device
4100 * @attr : device attribute to show
4101 * @buf : buffer to send data to
4103 * Display the logical drive number for the device in question, if it a valid
4104 * logical drive. For physical devices, "-1" is returned.
4106 * The logical drive number is displayed in following format:
4108 * <SCSI ID> <LD NUM> <LD STICKY ID> <APP ADAPTER HANDLE>
4110 * <int> <int> <int> <int>
4113 megaraid_sysfs_show_ldnum(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
4115 struct scsi_device
*sdev
= to_scsi_device(dev
);
4116 adapter_t
*adapter
= (adapter_t
*)SCSIHOST2ADAP(sdev
->host
);
4117 mraid_device_t
*raid_dev
= ADAP2RAIDDEV(adapter
);
4119 int logical_drv
= -1;
4121 uint32_t app_hndl
= 0;
4126 if (raid_dev
->random_del_supported
&&
4127 MRAID_IS_LOGICAL_SDEV(adapter
, sdev
)) {
4129 rval
= megaraid_sysfs_get_ldmap(adapter
);
4132 for (i
= 0; i
< MAX_LOGICAL_DRIVES_40LD
; i
++) {
4134 mapped_sdev_id
= sdev
->id
;
4136 if (sdev
->id
> adapter
->init_id
) {
4137 mapped_sdev_id
-= 1;
4140 if (raid_dev
->curr_ldmap
[i
] == mapped_sdev_id
) {
4146 ldid_map
= raid_dev
->curr_ldmap
[i
];
4148 app_hndl
= mraid_mm_adapter_app_handle(
4149 adapter
->unique_id
);
4156 con_log(CL_ANN
, (KERN_NOTICE
4157 "megaraid: sysfs get ld map failed: %x\n",
4162 return snprintf(buf
, 36, "%d %d %d %d\n", scsi_id
, logical_drv
,
4163 ldid_map
, app_hndl
);
4168 * END: Mailbox Low Level Driver
4170 module_init(megaraid_init
);
4171 module_exit(megaraid_exit
);
4173 /* vim: set ts=8 sw=8 tw=78 ai si: */