4146 lines
99 KiB
C
4146 lines
99 KiB
C
/*
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*
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* Linux MegaRAID device driver
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*
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* Copyright (c) 2003-2004 LSI Logic Corporation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* FILE : megaraid_mbox.c
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* Version : v2.20.5.1 (Nov 16 2006)
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*
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* Authors:
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* Atul Mukker <Atul.Mukker@lsi.com>
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* Sreenivas Bagalkote <Sreenivas.Bagalkote@lsi.com>
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* Manoj Jose <Manoj.Jose@lsi.com>
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* Seokmann Ju
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*
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* List of supported controllers
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*
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* OEM Product Name VID DID SSVID SSID
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* --- ------------ --- --- ---- ----
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* Dell PERC3/QC 101E 1960 1028 0471
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* Dell PERC3/DC 101E 1960 1028 0493
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* Dell PERC3/SC 101E 1960 1028 0475
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* Dell PERC3/Di 1028 1960 1028 0123
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* Dell PERC4/SC 1000 1960 1028 0520
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* Dell PERC4/DC 1000 1960 1028 0518
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* Dell PERC4/QC 1000 0407 1028 0531
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* Dell PERC4/Di 1028 000F 1028 014A
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* Dell PERC 4e/Si 1028 0013 1028 016c
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* Dell PERC 4e/Di 1028 0013 1028 016d
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* Dell PERC 4e/Di 1028 0013 1028 016e
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* Dell PERC 4e/Di 1028 0013 1028 016f
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* Dell PERC 4e/Di 1028 0013 1028 0170
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* Dell PERC 4e/DC 1000 0408 1028 0002
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* Dell PERC 4e/SC 1000 0408 1028 0001
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*
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*
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* LSI MegaRAID SCSI 320-0 1000 1960 1000 A520
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* LSI MegaRAID SCSI 320-1 1000 1960 1000 0520
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* LSI MegaRAID SCSI 320-2 1000 1960 1000 0518
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* LSI MegaRAID SCSI 320-0X 1000 0407 1000 0530
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* LSI MegaRAID SCSI 320-2X 1000 0407 1000 0532
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* LSI MegaRAID SCSI 320-4X 1000 0407 1000 0531
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* LSI MegaRAID SCSI 320-1E 1000 0408 1000 0001
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* LSI MegaRAID SCSI 320-2E 1000 0408 1000 0002
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* LSI MegaRAID SATA 150-4 1000 1960 1000 4523
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* LSI MegaRAID SATA 150-6 1000 1960 1000 0523
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* LSI MegaRAID SATA 300-4X 1000 0409 1000 3004
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* LSI MegaRAID SATA 300-8X 1000 0409 1000 3008
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*
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* INTEL RAID Controller SRCU42X 1000 0407 8086 0532
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* INTEL RAID Controller SRCS16 1000 1960 8086 0523
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* INTEL RAID Controller SRCU42E 1000 0408 8086 0002
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* INTEL RAID Controller SRCZCRX 1000 0407 8086 0530
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* INTEL RAID Controller SRCS28X 1000 0409 8086 3008
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* INTEL RAID Controller SROMBU42E 1000 0408 8086 3431
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* INTEL RAID Controller SROMBU42E 1000 0408 8086 3499
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* INTEL RAID Controller SRCU51L 1000 1960 8086 0520
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*
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* FSC MegaRAID PCI Express ROMB 1000 0408 1734 1065
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*
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* ACER MegaRAID ROMB-2E 1000 0408 1025 004D
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*
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* NEC MegaRAID PCI Express ROMB 1000 0408 1033 8287
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*
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* For history of changes, see Documentation/scsi/ChangeLog.megaraid
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*/
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#include <linux/slab.h>
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#include <linux/module.h>
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#include "megaraid_mbox.h"
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static int megaraid_init(void);
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static void megaraid_exit(void);
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static int megaraid_probe_one(struct pci_dev*, const struct pci_device_id *);
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static void megaraid_detach_one(struct pci_dev *);
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static void megaraid_mbox_shutdown(struct pci_dev *);
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static int megaraid_io_attach(adapter_t *);
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static void megaraid_io_detach(adapter_t *);
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static int megaraid_init_mbox(adapter_t *);
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static void megaraid_fini_mbox(adapter_t *);
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static int megaraid_alloc_cmd_packets(adapter_t *);
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static void megaraid_free_cmd_packets(adapter_t *);
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static int megaraid_mbox_setup_dma_pools(adapter_t *);
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static void megaraid_mbox_teardown_dma_pools(adapter_t *);
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static int megaraid_sysfs_alloc_resources(adapter_t *);
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static void megaraid_sysfs_free_resources(adapter_t *);
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static int megaraid_abort_handler(struct scsi_cmnd *);
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static int megaraid_reset_handler(struct scsi_cmnd *);
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static int mbox_post_sync_cmd(adapter_t *, uint8_t []);
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static int mbox_post_sync_cmd_fast(adapter_t *, uint8_t []);
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static int megaraid_busywait_mbox(mraid_device_t *);
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static int megaraid_mbox_product_info(adapter_t *);
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static int megaraid_mbox_extended_cdb(adapter_t *);
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static int megaraid_mbox_support_ha(adapter_t *, uint16_t *);
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static int megaraid_mbox_support_random_del(adapter_t *);
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static int megaraid_mbox_get_max_sg(adapter_t *);
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static void megaraid_mbox_enum_raid_scsi(adapter_t *);
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static void megaraid_mbox_flush_cache(adapter_t *);
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static int megaraid_mbox_fire_sync_cmd(adapter_t *);
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static void megaraid_mbox_display_scb(adapter_t *, scb_t *);
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static void megaraid_mbox_setup_device_map(adapter_t *);
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static int megaraid_queue_command(struct Scsi_Host *, struct scsi_cmnd *);
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static scb_t *megaraid_mbox_build_cmd(adapter_t *, struct scsi_cmnd *, int *);
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static void megaraid_mbox_runpendq(adapter_t *, scb_t *);
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static void megaraid_mbox_prepare_pthru(adapter_t *, scb_t *,
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struct scsi_cmnd *);
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static void megaraid_mbox_prepare_epthru(adapter_t *, scb_t *,
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struct scsi_cmnd *);
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static irqreturn_t megaraid_isr(int, void *);
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static void megaraid_mbox_dpc(unsigned long);
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static ssize_t megaraid_sysfs_show_app_hndl(struct device *, struct device_attribute *attr, char *);
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static ssize_t megaraid_sysfs_show_ldnum(struct device *, struct device_attribute *attr, char *);
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static int megaraid_cmm_register(adapter_t *);
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static int megaraid_cmm_unregister(adapter_t *);
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static int megaraid_mbox_mm_handler(unsigned long, uioc_t *, uint32_t);
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static int megaraid_mbox_mm_command(adapter_t *, uioc_t *);
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static void megaraid_mbox_mm_done(adapter_t *, scb_t *);
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static int gather_hbainfo(adapter_t *, mraid_hba_info_t *);
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static int wait_till_fw_empty(adapter_t *);
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MODULE_AUTHOR("megaraidlinux@lsi.com");
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MODULE_DESCRIPTION("LSI Logic MegaRAID Mailbox Driver");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(MEGARAID_VERSION);
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/*
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* ### modules parameters for driver ###
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*/
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/*
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* Set to enable driver to expose unconfigured disk to kernel
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*/
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static int megaraid_expose_unconf_disks = 0;
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module_param_named(unconf_disks, megaraid_expose_unconf_disks, int, 0);
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MODULE_PARM_DESC(unconf_disks,
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"Set to expose unconfigured disks to kernel (default=0)");
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/*
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* driver wait time if the adapter's mailbox is busy
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*/
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static unsigned int max_mbox_busy_wait = MBOX_BUSY_WAIT;
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module_param_named(busy_wait, max_mbox_busy_wait, int, 0);
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MODULE_PARM_DESC(busy_wait,
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"Max wait for mailbox in microseconds if busy (default=10)");
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/*
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* number of sectors per IO command
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*/
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static unsigned int megaraid_max_sectors = MBOX_MAX_SECTORS;
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module_param_named(max_sectors, megaraid_max_sectors, int, 0);
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MODULE_PARM_DESC(max_sectors,
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"Maximum number of sectors per IO command (default=128)");
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/*
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* number of commands per logical unit
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*/
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static unsigned int megaraid_cmd_per_lun = MBOX_DEF_CMD_PER_LUN;
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module_param_named(cmd_per_lun, megaraid_cmd_per_lun, int, 0);
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MODULE_PARM_DESC(cmd_per_lun,
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"Maximum number of commands per logical unit (default=64)");
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/*
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* Fast driver load option, skip scanning for physical devices during load.
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* This would result in non-disk devices being skipped during driver load
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* time. These can be later added though, using /proc/scsi/scsi
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*/
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static unsigned int megaraid_fast_load = 0;
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module_param_named(fast_load, megaraid_fast_load, int, 0);
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MODULE_PARM_DESC(fast_load,
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"Faster loading of the driver, skips physical devices! (default=0)");
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/*
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* mraid_debug level - threshold for amount of information to be displayed by
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* the driver. This level can be changed through modules parameters, ioctl or
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* sysfs/proc interface. By default, print the announcement messages only.
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*/
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int mraid_debug_level = CL_ANN;
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module_param_named(debug_level, mraid_debug_level, int, 0);
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MODULE_PARM_DESC(debug_level, "Debug level for driver (default=0)");
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/*
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* ### global data ###
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*/
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static uint8_t megaraid_mbox_version[8] =
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{ 0x02, 0x20, 0x04, 0x06, 3, 7, 20, 5 };
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/*
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* PCI table for all supported controllers.
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*/
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static struct pci_device_id pci_id_table_g[] = {
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{
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PCI_VENDOR_ID_DELL,
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PCI_DEVICE_ID_PERC4_DI_DISCOVERY,
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PCI_VENDOR_ID_DELL,
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PCI_SUBSYS_ID_PERC4_DI_DISCOVERY,
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},
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{
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PCI_VENDOR_ID_LSI_LOGIC,
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PCI_DEVICE_ID_PERC4_SC,
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PCI_VENDOR_ID_DELL,
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PCI_SUBSYS_ID_PERC4_SC,
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},
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{
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PCI_VENDOR_ID_LSI_LOGIC,
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PCI_DEVICE_ID_PERC4_DC,
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PCI_VENDOR_ID_DELL,
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PCI_SUBSYS_ID_PERC4_DC,
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},
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{
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PCI_VENDOR_ID_LSI_LOGIC,
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PCI_DEVICE_ID_VERDE,
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PCI_ANY_ID,
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PCI_ANY_ID,
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},
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{
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PCI_VENDOR_ID_DELL,
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PCI_DEVICE_ID_PERC4_DI_EVERGLADES,
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PCI_VENDOR_ID_DELL,
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PCI_SUBSYS_ID_PERC4_DI_EVERGLADES,
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},
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{
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PCI_VENDOR_ID_DELL,
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PCI_DEVICE_ID_PERC4E_SI_BIGBEND,
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PCI_VENDOR_ID_DELL,
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PCI_SUBSYS_ID_PERC4E_SI_BIGBEND,
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},
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{
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PCI_VENDOR_ID_DELL,
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PCI_DEVICE_ID_PERC4E_DI_KOBUK,
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PCI_VENDOR_ID_DELL,
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PCI_SUBSYS_ID_PERC4E_DI_KOBUK,
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},
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{
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PCI_VENDOR_ID_DELL,
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PCI_DEVICE_ID_PERC4E_DI_CORVETTE,
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PCI_VENDOR_ID_DELL,
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PCI_SUBSYS_ID_PERC4E_DI_CORVETTE,
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},
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{
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PCI_VENDOR_ID_DELL,
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PCI_DEVICE_ID_PERC4E_DI_EXPEDITION,
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PCI_VENDOR_ID_DELL,
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PCI_SUBSYS_ID_PERC4E_DI_EXPEDITION,
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},
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{
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PCI_VENDOR_ID_DELL,
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PCI_DEVICE_ID_PERC4E_DI_GUADALUPE,
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PCI_VENDOR_ID_DELL,
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PCI_SUBSYS_ID_PERC4E_DI_GUADALUPE,
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},
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{
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PCI_VENDOR_ID_LSI_LOGIC,
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PCI_DEVICE_ID_DOBSON,
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PCI_ANY_ID,
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PCI_ANY_ID,
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},
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{
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PCI_VENDOR_ID_AMI,
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PCI_DEVICE_ID_AMI_MEGARAID3,
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PCI_ANY_ID,
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PCI_ANY_ID,
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},
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{
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PCI_VENDOR_ID_LSI_LOGIC,
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PCI_DEVICE_ID_AMI_MEGARAID3,
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PCI_ANY_ID,
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PCI_ANY_ID,
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},
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{
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PCI_VENDOR_ID_LSI_LOGIC,
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PCI_DEVICE_ID_LINDSAY,
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PCI_ANY_ID,
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PCI_ANY_ID,
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},
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{0} /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(pci, pci_id_table_g);
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static struct pci_driver megaraid_pci_driver = {
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.name = "megaraid",
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.id_table = pci_id_table_g,
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.probe = megaraid_probe_one,
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.remove = megaraid_detach_one,
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.shutdown = megaraid_mbox_shutdown,
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};
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// definitions for the device attributes for exporting logical drive number
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// for a scsi address (Host, Channel, Id, Lun)
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DEVICE_ATTR(megaraid_mbox_app_hndl, S_IRUSR, megaraid_sysfs_show_app_hndl,
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NULL);
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// Host template initializer for megaraid mbox sysfs device attributes
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static struct device_attribute *megaraid_shost_attrs[] = {
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&dev_attr_megaraid_mbox_app_hndl,
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NULL,
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};
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DEVICE_ATTR(megaraid_mbox_ld, S_IRUSR, megaraid_sysfs_show_ldnum, NULL);
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// Host template initializer for megaraid mbox sysfs device attributes
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static struct device_attribute *megaraid_sdev_attrs[] = {
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&dev_attr_megaraid_mbox_ld,
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NULL,
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};
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/*
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* Scsi host template for megaraid unified driver
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*/
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static struct scsi_host_template megaraid_template_g = {
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.module = THIS_MODULE,
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.name = "LSI Logic MegaRAID driver",
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.proc_name = "megaraid",
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.queuecommand = megaraid_queue_command,
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.eh_abort_handler = megaraid_abort_handler,
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.eh_device_reset_handler = megaraid_reset_handler,
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.eh_bus_reset_handler = megaraid_reset_handler,
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.eh_host_reset_handler = megaraid_reset_handler,
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.change_queue_depth = scsi_change_queue_depth,
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.use_clustering = ENABLE_CLUSTERING,
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.no_write_same = 1,
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.sdev_attrs = megaraid_sdev_attrs,
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.shost_attrs = megaraid_shost_attrs,
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};
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/**
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* megaraid_init - module load hook
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*
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* We register ourselves as hotplug enabled module and let PCI subsystem
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* discover our adapters.
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*/
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static int __init
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megaraid_init(void)
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{
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int rval;
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// Announce the driver version
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con_log(CL_ANN, (KERN_INFO "megaraid: %s %s\n", MEGARAID_VERSION,
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MEGARAID_EXT_VERSION));
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// check validity of module parameters
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if (megaraid_cmd_per_lun > MBOX_MAX_SCSI_CMDS) {
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con_log(CL_ANN, (KERN_WARNING
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"megaraid mailbox: max commands per lun reset to %d\n",
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MBOX_MAX_SCSI_CMDS));
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megaraid_cmd_per_lun = MBOX_MAX_SCSI_CMDS;
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}
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// register as a PCI hot-plug driver module
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rval = pci_register_driver(&megaraid_pci_driver);
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if (rval < 0) {
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con_log(CL_ANN, (KERN_WARNING
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"megaraid: could not register hotplug support.\n"));
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}
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return rval;
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}
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/**
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* megaraid_exit - driver unload entry point
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*
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* We simply unwrap the megaraid_init routine here.
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*/
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static void __exit
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megaraid_exit(void)
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{
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con_log(CL_DLEVEL1, (KERN_NOTICE "megaraid: unloading framework\n"));
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// unregister as PCI hotplug driver
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pci_unregister_driver(&megaraid_pci_driver);
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return;
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}
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/**
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* megaraid_probe_one - PCI hotplug entry point
|
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* @pdev : handle to this controller's PCI configuration space
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* @id : pci device id of the class of controllers
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*
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* This routine should be called whenever a new adapter is detected by the
|
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* PCI hotplug susbsystem.
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*/
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static int
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megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
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{
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adapter_t *adapter;
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// detected a new controller
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con_log(CL_ANN, (KERN_INFO
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"megaraid: probe new device %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
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pdev->vendor, pdev->device, pdev->subsystem_vendor,
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pdev->subsystem_device));
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con_log(CL_ANN, ("bus %d:slot %d:func %d\n", pdev->bus->number,
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PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)));
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if (pci_enable_device(pdev)) {
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con_log(CL_ANN, (KERN_WARNING
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"megaraid: pci_enable_device failed\n"));
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return -ENODEV;
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}
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// Enable bus-mastering on this controller
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pci_set_master(pdev);
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// Allocate the per driver initialization structure
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adapter = kzalloc(sizeof(adapter_t), GFP_KERNEL);
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if (adapter == NULL) {
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con_log(CL_ANN, (KERN_WARNING
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"megaraid: out of memory, %s %d.\n", __func__, __LINE__));
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|
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goto out_probe_one;
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}
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|
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|
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// set up PCI related soft state and other pre-known parameters
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adapter->unique_id = pdev->bus->number << 8 | pdev->devfn;
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adapter->irq = pdev->irq;
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adapter->pdev = pdev;
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atomic_set(&adapter->being_detached, 0);
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|
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// Setup the default DMA mask. This would be changed later on
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// depending on hardware capabilities
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if (pci_set_dma_mask(adapter->pdev, DMA_BIT_MASK(32)) != 0) {
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con_log(CL_ANN, (KERN_WARNING
|
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"megaraid: pci_set_dma_mask failed:%d\n", __LINE__));
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|
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goto out_free_adapter;
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}
|
|
|
|
|
|
// Initialize the synchronization lock for kernel and LLD
|
|
spin_lock_init(&adapter->lock);
|
|
|
|
// Initialize the command queues: the list of free SCBs and the list
|
|
// of pending SCBs.
|
|
INIT_LIST_HEAD(&adapter->kscb_pool);
|
|
spin_lock_init(SCSI_FREE_LIST_LOCK(adapter));
|
|
|
|
INIT_LIST_HEAD(&adapter->pend_list);
|
|
spin_lock_init(PENDING_LIST_LOCK(adapter));
|
|
|
|
INIT_LIST_HEAD(&adapter->completed_list);
|
|
spin_lock_init(COMPLETED_LIST_LOCK(adapter));
|
|
|
|
|
|
// Start the mailbox based controller
|
|
if (megaraid_init_mbox(adapter) != 0) {
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: maibox adapter did not initialize\n"));
|
|
|
|
goto out_free_adapter;
|
|
}
|
|
|
|
// Register with LSI Common Management Module
|
|
if (megaraid_cmm_register(adapter) != 0) {
|
|
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: could not register with management module\n"));
|
|
|
|
goto out_fini_mbox;
|
|
}
|
|
|
|
// setup adapter handle in PCI soft state
|
|
pci_set_drvdata(pdev, adapter);
|
|
|
|
// attach with scsi mid-layer
|
|
if (megaraid_io_attach(adapter) != 0) {
|
|
|
|
con_log(CL_ANN, (KERN_WARNING "megaraid: io attach failed\n"));
|
|
|
|
goto out_cmm_unreg;
|
|
}
|
|
|
|
return 0;
|
|
|
|
out_cmm_unreg:
|
|
megaraid_cmm_unregister(adapter);
|
|
out_fini_mbox:
|
|
megaraid_fini_mbox(adapter);
|
|
out_free_adapter:
|
|
kfree(adapter);
|
|
out_probe_one:
|
|
pci_disable_device(pdev);
|
|
|
|
return -ENODEV;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_detach_one - release framework resources and call LLD release routine
|
|
* @pdev : handle for our PCI configuration space
|
|
*
|
|
* This routine is called during driver unload. We free all the allocated
|
|
* resources and call the corresponding LLD so that it can also release all
|
|
* its resources.
|
|
*
|
|
* This routine is also called from the PCI hotplug system.
|
|
*/
|
|
static void
|
|
megaraid_detach_one(struct pci_dev *pdev)
|
|
{
|
|
adapter_t *adapter;
|
|
struct Scsi_Host *host;
|
|
|
|
|
|
// Start a rollback on this adapter
|
|
adapter = pci_get_drvdata(pdev);
|
|
|
|
if (!adapter) {
|
|
con_log(CL_ANN, (KERN_CRIT
|
|
"megaraid: Invalid detach on %#4.04x:%#4.04x:%#4.04x:%#4.04x\n",
|
|
pdev->vendor, pdev->device, pdev->subsystem_vendor,
|
|
pdev->subsystem_device));
|
|
|
|
return;
|
|
}
|
|
else {
|
|
con_log(CL_ANN, (KERN_NOTICE
|
|
"megaraid: detaching device %#4.04x:%#4.04x:%#4.04x:%#4.04x\n",
|
|
pdev->vendor, pdev->device, pdev->subsystem_vendor,
|
|
pdev->subsystem_device));
|
|
}
|
|
|
|
|
|
host = adapter->host;
|
|
|
|
// do not allow any more requests from the management module for this
|
|
// adapter.
|
|
// FIXME: How do we account for the request which might still be
|
|
// pending with us?
|
|
atomic_set(&adapter->being_detached, 1);
|
|
|
|
// detach from the IO sub-system
|
|
megaraid_io_detach(adapter);
|
|
|
|
// Unregister from common management module
|
|
//
|
|
// FIXME: this must return success or failure for conditions if there
|
|
// is a command pending with LLD or not.
|
|
megaraid_cmm_unregister(adapter);
|
|
|
|
// finalize the mailbox based controller and release all resources
|
|
megaraid_fini_mbox(adapter);
|
|
|
|
kfree(adapter);
|
|
|
|
scsi_host_put(host);
|
|
|
|
pci_disable_device(pdev);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_mbox_shutdown - PCI shutdown for megaraid HBA
|
|
* @pdev : generic driver model device
|
|
*
|
|
* Shutdown notification, perform flush cache.
|
|
*/
|
|
static void
|
|
megaraid_mbox_shutdown(struct pci_dev *pdev)
|
|
{
|
|
adapter_t *adapter = pci_get_drvdata(pdev);
|
|
static int counter;
|
|
|
|
if (!adapter) {
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: null device in shutdown\n"));
|
|
return;
|
|
}
|
|
|
|
// flush caches now
|
|
con_log(CL_ANN, (KERN_INFO "megaraid: flushing adapter %d...",
|
|
counter++));
|
|
|
|
megaraid_mbox_flush_cache(adapter);
|
|
|
|
con_log(CL_ANN, ("done\n"));
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_io_attach - attach a device with the IO subsystem
|
|
* @adapter : controller's soft state
|
|
*
|
|
* Attach this device with the IO subsystem.
|
|
*/
|
|
static int
|
|
megaraid_io_attach(adapter_t *adapter)
|
|
{
|
|
struct Scsi_Host *host;
|
|
|
|
// Initialize SCSI Host structure
|
|
host = scsi_host_alloc(&megaraid_template_g, 8);
|
|
if (!host) {
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid mbox: scsi_register failed\n"));
|
|
|
|
return -1;
|
|
}
|
|
|
|
SCSIHOST2ADAP(host) = (caddr_t)adapter;
|
|
adapter->host = host;
|
|
|
|
host->irq = adapter->irq;
|
|
host->unique_id = adapter->unique_id;
|
|
host->can_queue = adapter->max_cmds;
|
|
host->this_id = adapter->init_id;
|
|
host->sg_tablesize = adapter->sglen;
|
|
host->max_sectors = adapter->max_sectors;
|
|
host->cmd_per_lun = adapter->cmd_per_lun;
|
|
host->max_channel = adapter->max_channel;
|
|
host->max_id = adapter->max_target;
|
|
host->max_lun = adapter->max_lun;
|
|
|
|
|
|
// notify mid-layer about the new controller
|
|
if (scsi_add_host(host, &adapter->pdev->dev)) {
|
|
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid mbox: scsi_add_host failed\n"));
|
|
|
|
scsi_host_put(host);
|
|
|
|
return -1;
|
|
}
|
|
|
|
scsi_scan_host(host);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_io_detach - detach a device from the IO subsystem
|
|
* @adapter : controller's soft state
|
|
*
|
|
* Detach this device from the IO subsystem.
|
|
*/
|
|
static void
|
|
megaraid_io_detach(adapter_t *adapter)
|
|
{
|
|
struct Scsi_Host *host;
|
|
|
|
con_log(CL_DLEVEL1, (KERN_INFO "megaraid: io detach\n"));
|
|
|
|
host = adapter->host;
|
|
|
|
scsi_remove_host(host);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/*
|
|
* START: Mailbox Low Level Driver
|
|
*
|
|
* This is section specific to the single mailbox based controllers
|
|
*/
|
|
|
|
/**
|
|
* megaraid_init_mbox - initialize controller
|
|
* @adapter : our soft state
|
|
*
|
|
* - Allocate 16-byte aligned mailbox memory for firmware handshake
|
|
* - Allocate controller's memory resources
|
|
* - Find out all initialization data
|
|
* - Allocate memory required for all the commands
|
|
* - Use internal library of FW routines, build up complete soft state
|
|
*/
|
|
static int
|
|
megaraid_init_mbox(adapter_t *adapter)
|
|
{
|
|
struct pci_dev *pdev;
|
|
mraid_device_t *raid_dev;
|
|
int i;
|
|
uint32_t magic64;
|
|
|
|
|
|
adapter->ito = MBOX_TIMEOUT;
|
|
pdev = adapter->pdev;
|
|
|
|
/*
|
|
* Allocate and initialize the init data structure for mailbox
|
|
* controllers
|
|
*/
|
|
raid_dev = kzalloc(sizeof(mraid_device_t), GFP_KERNEL);
|
|
if (raid_dev == NULL) return -1;
|
|
|
|
|
|
/*
|
|
* Attach the adapter soft state to raid device soft state
|
|
*/
|
|
adapter->raid_device = (caddr_t)raid_dev;
|
|
raid_dev->fast_load = megaraid_fast_load;
|
|
|
|
|
|
// our baseport
|
|
raid_dev->baseport = pci_resource_start(pdev, 0);
|
|
|
|
if (pci_request_regions(pdev, "MegaRAID: LSI Logic Corporation") != 0) {
|
|
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: mem region busy\n"));
|
|
|
|
goto out_free_raid_dev;
|
|
}
|
|
|
|
raid_dev->baseaddr = ioremap_nocache(raid_dev->baseport, 128);
|
|
|
|
if (!raid_dev->baseaddr) {
|
|
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: could not map hba memory\n") );
|
|
|
|
goto out_release_regions;
|
|
}
|
|
|
|
/* initialize the mutual exclusion lock for the mailbox */
|
|
spin_lock_init(&raid_dev->mailbox_lock);
|
|
|
|
/* allocate memory required for commands */
|
|
if (megaraid_alloc_cmd_packets(adapter) != 0)
|
|
goto out_iounmap;
|
|
|
|
/*
|
|
* Issue SYNC cmd to flush the pending cmds in the adapter
|
|
* and initialize its internal state
|
|
*/
|
|
|
|
if (megaraid_mbox_fire_sync_cmd(adapter))
|
|
con_log(CL_ANN, ("megaraid: sync cmd failed\n"));
|
|
|
|
/*
|
|
* Setup the rest of the soft state using the library of
|
|
* FW routines
|
|
*/
|
|
|
|
/* request IRQ and register the interrupt service routine */
|
|
if (request_irq(adapter->irq, megaraid_isr, IRQF_SHARED, "megaraid",
|
|
adapter)) {
|
|
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: Couldn't register IRQ %d!\n", adapter->irq));
|
|
goto out_alloc_cmds;
|
|
|
|
}
|
|
|
|
// Product info
|
|
if (megaraid_mbox_product_info(adapter) != 0)
|
|
goto out_free_irq;
|
|
|
|
// Do we support extended CDBs
|
|
adapter->max_cdb_sz = 10;
|
|
if (megaraid_mbox_extended_cdb(adapter) == 0) {
|
|
adapter->max_cdb_sz = 16;
|
|
}
|
|
|
|
/*
|
|
* Do we support cluster environment, if we do, what is the initiator
|
|
* id.
|
|
* NOTE: In a non-cluster aware firmware environment, the LLD should
|
|
* return 7 as initiator id.
|
|
*/
|
|
adapter->ha = 0;
|
|
adapter->init_id = -1;
|
|
if (megaraid_mbox_support_ha(adapter, &adapter->init_id) == 0) {
|
|
adapter->ha = 1;
|
|
}
|
|
|
|
/*
|
|
* Prepare the device ids array to have the mapping between the kernel
|
|
* device address and megaraid device address.
|
|
* We export the physical devices on their actual addresses. The
|
|
* logical drives are exported on a virtual SCSI channel
|
|
*/
|
|
megaraid_mbox_setup_device_map(adapter);
|
|
|
|
// If the firmware supports random deletion, update the device id map
|
|
if (megaraid_mbox_support_random_del(adapter)) {
|
|
|
|
// Change the logical drives numbers in device_ids array one
|
|
// slot in device_ids is reserved for target id, that's why
|
|
// "<=" below
|
|
for (i = 0; i <= MAX_LOGICAL_DRIVES_40LD; i++) {
|
|
adapter->device_ids[adapter->max_channel][i] += 0x80;
|
|
}
|
|
adapter->device_ids[adapter->max_channel][adapter->init_id] =
|
|
0xFF;
|
|
|
|
raid_dev->random_del_supported = 1;
|
|
}
|
|
|
|
/*
|
|
* find out the maximum number of scatter-gather elements supported by
|
|
* this firmware
|
|
*/
|
|
adapter->sglen = megaraid_mbox_get_max_sg(adapter);
|
|
|
|
// enumerate RAID and SCSI channels so that all devices on SCSI
|
|
// channels can later be exported, including disk devices
|
|
megaraid_mbox_enum_raid_scsi(adapter);
|
|
|
|
/*
|
|
* Other parameters required by upper layer
|
|
*
|
|
* maximum number of sectors per IO command
|
|
*/
|
|
adapter->max_sectors = megaraid_max_sectors;
|
|
|
|
/*
|
|
* number of queued commands per LUN.
|
|
*/
|
|
adapter->cmd_per_lun = megaraid_cmd_per_lun;
|
|
|
|
/*
|
|
* Allocate resources required to issue FW calls, when sysfs is
|
|
* accessed
|
|
*/
|
|
if (megaraid_sysfs_alloc_resources(adapter) != 0)
|
|
goto out_free_irq;
|
|
|
|
// Set the DMA mask to 64-bit. All supported controllers as capable of
|
|
// DMA in this range
|
|
pci_read_config_dword(adapter->pdev, PCI_CONF_AMISIG64, &magic64);
|
|
|
|
if (((magic64 == HBA_SIGNATURE_64_BIT) &&
|
|
((adapter->pdev->subsystem_device !=
|
|
PCI_SUBSYS_ID_MEGARAID_SATA_150_6) &&
|
|
(adapter->pdev->subsystem_device !=
|
|
PCI_SUBSYS_ID_MEGARAID_SATA_150_4))) ||
|
|
(adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC &&
|
|
adapter->pdev->device == PCI_DEVICE_ID_VERDE) ||
|
|
(adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC &&
|
|
adapter->pdev->device == PCI_DEVICE_ID_DOBSON) ||
|
|
(adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC &&
|
|
adapter->pdev->device == PCI_DEVICE_ID_LINDSAY) ||
|
|
(adapter->pdev->vendor == PCI_VENDOR_ID_DELL &&
|
|
adapter->pdev->device == PCI_DEVICE_ID_PERC4_DI_EVERGLADES) ||
|
|
(adapter->pdev->vendor == PCI_VENDOR_ID_DELL &&
|
|
adapter->pdev->device == PCI_DEVICE_ID_PERC4E_DI_KOBUK)) {
|
|
if (pci_set_dma_mask(adapter->pdev, DMA_BIT_MASK(64))) {
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: DMA mask for 64-bit failed\n"));
|
|
|
|
if (pci_set_dma_mask (adapter->pdev, DMA_BIT_MASK(32))) {
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: 32-bit DMA mask failed\n"));
|
|
goto out_free_sysfs_res;
|
|
}
|
|
}
|
|
}
|
|
|
|
// setup tasklet for DPC
|
|
tasklet_init(&adapter->dpc_h, megaraid_mbox_dpc,
|
|
(unsigned long)adapter);
|
|
|
|
con_log(CL_DLEVEL1, (KERN_INFO
|
|
"megaraid mbox hba successfully initialized\n"));
|
|
|
|
return 0;
|
|
|
|
out_free_sysfs_res:
|
|
megaraid_sysfs_free_resources(adapter);
|
|
out_free_irq:
|
|
free_irq(adapter->irq, adapter);
|
|
out_alloc_cmds:
|
|
megaraid_free_cmd_packets(adapter);
|
|
out_iounmap:
|
|
iounmap(raid_dev->baseaddr);
|
|
out_release_regions:
|
|
pci_release_regions(pdev);
|
|
out_free_raid_dev:
|
|
kfree(raid_dev);
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_fini_mbox - undo controller initialization
|
|
* @adapter : our soft state
|
|
*/
|
|
static void
|
|
megaraid_fini_mbox(adapter_t *adapter)
|
|
{
|
|
mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
|
|
|
|
// flush all caches
|
|
megaraid_mbox_flush_cache(adapter);
|
|
|
|
tasklet_kill(&adapter->dpc_h);
|
|
|
|
megaraid_sysfs_free_resources(adapter);
|
|
|
|
megaraid_free_cmd_packets(adapter);
|
|
|
|
free_irq(adapter->irq, adapter);
|
|
|
|
iounmap(raid_dev->baseaddr);
|
|
|
|
pci_release_regions(adapter->pdev);
|
|
|
|
kfree(raid_dev);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_alloc_cmd_packets - allocate shared mailbox
|
|
* @adapter : soft state of the raid controller
|
|
*
|
|
* Allocate and align the shared mailbox. This maibox is used to issue
|
|
* all the commands. For IO based controllers, the mailbox is also registered
|
|
* with the FW. Allocate memory for all commands as well.
|
|
* This is our big allocator.
|
|
*/
|
|
static int
|
|
megaraid_alloc_cmd_packets(adapter_t *adapter)
|
|
{
|
|
mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
|
|
struct pci_dev *pdev;
|
|
unsigned long align;
|
|
scb_t *scb;
|
|
mbox_ccb_t *ccb;
|
|
struct mraid_pci_blk *epthru_pci_blk;
|
|
struct mraid_pci_blk *sg_pci_blk;
|
|
struct mraid_pci_blk *mbox_pci_blk;
|
|
int i;
|
|
|
|
pdev = adapter->pdev;
|
|
|
|
/*
|
|
* Setup the mailbox
|
|
* Allocate the common 16-byte aligned memory for the handshake
|
|
* mailbox.
|
|
*/
|
|
raid_dev->una_mbox64 = pci_zalloc_consistent(adapter->pdev,
|
|
sizeof(mbox64_t),
|
|
&raid_dev->una_mbox64_dma);
|
|
|
|
if (!raid_dev->una_mbox64) {
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: out of memory, %s %d\n", __func__,
|
|
__LINE__));
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Align the mailbox at 16-byte boundary
|
|
*/
|
|
raid_dev->mbox = &raid_dev->una_mbox64->mbox32;
|
|
|
|
raid_dev->mbox = (mbox_t *)((((unsigned long)raid_dev->mbox) + 15) &
|
|
(~0UL ^ 0xFUL));
|
|
|
|
raid_dev->mbox64 = (mbox64_t *)(((unsigned long)raid_dev->mbox) - 8);
|
|
|
|
align = ((void *)raid_dev->mbox -
|
|
((void *)&raid_dev->una_mbox64->mbox32));
|
|
|
|
raid_dev->mbox_dma = (unsigned long)raid_dev->una_mbox64_dma + 8 +
|
|
align;
|
|
|
|
// Allocate memory for commands issued internally
|
|
adapter->ibuf = pci_zalloc_consistent(pdev, MBOX_IBUF_SIZE,
|
|
&adapter->ibuf_dma_h);
|
|
if (!adapter->ibuf) {
|
|
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: out of memory, %s %d\n", __func__,
|
|
__LINE__));
|
|
|
|
goto out_free_common_mbox;
|
|
}
|
|
|
|
// Allocate memory for our SCSI Command Blocks and their associated
|
|
// memory
|
|
|
|
/*
|
|
* Allocate memory for the base list of scb. Later allocate memory for
|
|
* CCBs and embedded components of each CCB and point the pointers in
|
|
* scb to the allocated components
|
|
* NOTE: The code to allocate SCB will be duplicated in all the LLD
|
|
* since the calling routine does not yet know the number of available
|
|
* commands.
|
|
*/
|
|
adapter->kscb_list = kcalloc(MBOX_MAX_SCSI_CMDS, sizeof(scb_t), GFP_KERNEL);
|
|
|
|
if (adapter->kscb_list == NULL) {
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: out of memory, %s %d\n", __func__,
|
|
__LINE__));
|
|
goto out_free_ibuf;
|
|
}
|
|
|
|
// memory allocation for our command packets
|
|
if (megaraid_mbox_setup_dma_pools(adapter) != 0) {
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: out of memory, %s %d\n", __func__,
|
|
__LINE__));
|
|
goto out_free_scb_list;
|
|
}
|
|
|
|
// Adjust the scb pointers and link in the free pool
|
|
epthru_pci_blk = raid_dev->epthru_pool;
|
|
sg_pci_blk = raid_dev->sg_pool;
|
|
mbox_pci_blk = raid_dev->mbox_pool;
|
|
|
|
for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) {
|
|
scb = adapter->kscb_list + i;
|
|
ccb = raid_dev->ccb_list + i;
|
|
|
|
ccb->mbox = (mbox_t *)(mbox_pci_blk[i].vaddr + 16);
|
|
ccb->raw_mbox = (uint8_t *)ccb->mbox;
|
|
ccb->mbox64 = (mbox64_t *)(mbox_pci_blk[i].vaddr + 8);
|
|
ccb->mbox_dma_h = (unsigned long)mbox_pci_blk[i].dma_addr + 16;
|
|
|
|
// make sure the mailbox is aligned properly
|
|
if (ccb->mbox_dma_h & 0x0F) {
|
|
con_log(CL_ANN, (KERN_CRIT
|
|
"megaraid mbox: not aligned on 16-bytes\n"));
|
|
|
|
goto out_teardown_dma_pools;
|
|
}
|
|
|
|
ccb->epthru = (mraid_epassthru_t *)
|
|
epthru_pci_blk[i].vaddr;
|
|
ccb->epthru_dma_h = epthru_pci_blk[i].dma_addr;
|
|
ccb->pthru = (mraid_passthru_t *)ccb->epthru;
|
|
ccb->pthru_dma_h = ccb->epthru_dma_h;
|
|
|
|
|
|
ccb->sgl64 = (mbox_sgl64 *)sg_pci_blk[i].vaddr;
|
|
ccb->sgl_dma_h = sg_pci_blk[i].dma_addr;
|
|
ccb->sgl32 = (mbox_sgl32 *)ccb->sgl64;
|
|
|
|
scb->ccb = (caddr_t)ccb;
|
|
scb->gp = 0;
|
|
|
|
scb->sno = i; // command index
|
|
|
|
scb->scp = NULL;
|
|
scb->state = SCB_FREE;
|
|
scb->dma_direction = PCI_DMA_NONE;
|
|
scb->dma_type = MRAID_DMA_NONE;
|
|
scb->dev_channel = -1;
|
|
scb->dev_target = -1;
|
|
|
|
// put scb in the free pool
|
|
list_add_tail(&scb->list, &adapter->kscb_pool);
|
|
}
|
|
|
|
return 0;
|
|
|
|
out_teardown_dma_pools:
|
|
megaraid_mbox_teardown_dma_pools(adapter);
|
|
out_free_scb_list:
|
|
kfree(adapter->kscb_list);
|
|
out_free_ibuf:
|
|
pci_free_consistent(pdev, MBOX_IBUF_SIZE, (void *)adapter->ibuf,
|
|
adapter->ibuf_dma_h);
|
|
out_free_common_mbox:
|
|
pci_free_consistent(adapter->pdev, sizeof(mbox64_t),
|
|
(caddr_t)raid_dev->una_mbox64, raid_dev->una_mbox64_dma);
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_free_cmd_packets - free memory
|
|
* @adapter : soft state of the raid controller
|
|
*
|
|
* Release memory resources allocated for commands.
|
|
*/
|
|
static void
|
|
megaraid_free_cmd_packets(adapter_t *adapter)
|
|
{
|
|
mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
|
|
|
|
megaraid_mbox_teardown_dma_pools(adapter);
|
|
|
|
kfree(adapter->kscb_list);
|
|
|
|
pci_free_consistent(adapter->pdev, MBOX_IBUF_SIZE,
|
|
(void *)adapter->ibuf, adapter->ibuf_dma_h);
|
|
|
|
pci_free_consistent(adapter->pdev, sizeof(mbox64_t),
|
|
(caddr_t)raid_dev->una_mbox64, raid_dev->una_mbox64_dma);
|
|
return;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_mbox_setup_dma_pools - setup dma pool for command packets
|
|
* @adapter : HBA soft state
|
|
*
|
|
* Setup the dma pools for mailbox, passthru and extended passthru structures,
|
|
* and scatter-gather lists.
|
|
*/
|
|
static int
|
|
megaraid_mbox_setup_dma_pools(adapter_t *adapter)
|
|
{
|
|
mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
|
|
struct mraid_pci_blk *epthru_pci_blk;
|
|
struct mraid_pci_blk *sg_pci_blk;
|
|
struct mraid_pci_blk *mbox_pci_blk;
|
|
int i;
|
|
|
|
|
|
|
|
// Allocate memory for 16-bytes aligned mailboxes
|
|
raid_dev->mbox_pool_handle = pci_pool_create("megaraid mbox pool",
|
|
adapter->pdev,
|
|
sizeof(mbox64_t) + 16,
|
|
16, 0);
|
|
|
|
if (raid_dev->mbox_pool_handle == NULL) {
|
|
goto fail_setup_dma_pool;
|
|
}
|
|
|
|
mbox_pci_blk = raid_dev->mbox_pool;
|
|
for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) {
|
|
mbox_pci_blk[i].vaddr = pci_pool_alloc(
|
|
raid_dev->mbox_pool_handle,
|
|
GFP_KERNEL,
|
|
&mbox_pci_blk[i].dma_addr);
|
|
if (!mbox_pci_blk[i].vaddr) {
|
|
goto fail_setup_dma_pool;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Allocate memory for each embedded passthru strucuture pointer
|
|
* Request for a 128 bytes aligned structure for each passthru command
|
|
* structure
|
|
* Since passthru and extended passthru commands are exclusive, they
|
|
* share common memory pool. Passthru structures piggyback on memory
|
|
* allocted to extended passthru since passthru is smaller of the two
|
|
*/
|
|
raid_dev->epthru_pool_handle = pci_pool_create("megaraid mbox pthru",
|
|
adapter->pdev, sizeof(mraid_epassthru_t), 128, 0);
|
|
|
|
if (raid_dev->epthru_pool_handle == NULL) {
|
|
goto fail_setup_dma_pool;
|
|
}
|
|
|
|
epthru_pci_blk = raid_dev->epthru_pool;
|
|
for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) {
|
|
epthru_pci_blk[i].vaddr = pci_pool_alloc(
|
|
raid_dev->epthru_pool_handle,
|
|
GFP_KERNEL,
|
|
&epthru_pci_blk[i].dma_addr);
|
|
if (!epthru_pci_blk[i].vaddr) {
|
|
goto fail_setup_dma_pool;
|
|
}
|
|
}
|
|
|
|
|
|
// Allocate memory for each scatter-gather list. Request for 512 bytes
|
|
// alignment for each sg list
|
|
raid_dev->sg_pool_handle = pci_pool_create("megaraid mbox sg",
|
|
adapter->pdev,
|
|
sizeof(mbox_sgl64) * MBOX_MAX_SG_SIZE,
|
|
512, 0);
|
|
|
|
if (raid_dev->sg_pool_handle == NULL) {
|
|
goto fail_setup_dma_pool;
|
|
}
|
|
|
|
sg_pci_blk = raid_dev->sg_pool;
|
|
for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) {
|
|
sg_pci_blk[i].vaddr = pci_pool_alloc(
|
|
raid_dev->sg_pool_handle,
|
|
GFP_KERNEL,
|
|
&sg_pci_blk[i].dma_addr);
|
|
if (!sg_pci_blk[i].vaddr) {
|
|
goto fail_setup_dma_pool;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
fail_setup_dma_pool:
|
|
megaraid_mbox_teardown_dma_pools(adapter);
|
|
return -1;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_mbox_teardown_dma_pools - teardown dma pools for command packets
|
|
* @adapter : HBA soft state
|
|
*
|
|
* Teardown the dma pool for mailbox, passthru and extended passthru
|
|
* structures, and scatter-gather lists.
|
|
*/
|
|
static void
|
|
megaraid_mbox_teardown_dma_pools(adapter_t *adapter)
|
|
{
|
|
mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
|
|
struct mraid_pci_blk *epthru_pci_blk;
|
|
struct mraid_pci_blk *sg_pci_blk;
|
|
struct mraid_pci_blk *mbox_pci_blk;
|
|
int i;
|
|
|
|
|
|
sg_pci_blk = raid_dev->sg_pool;
|
|
for (i = 0; i < MBOX_MAX_SCSI_CMDS && sg_pci_blk[i].vaddr; i++) {
|
|
pci_pool_free(raid_dev->sg_pool_handle, sg_pci_blk[i].vaddr,
|
|
sg_pci_blk[i].dma_addr);
|
|
}
|
|
if (raid_dev->sg_pool_handle)
|
|
pci_pool_destroy(raid_dev->sg_pool_handle);
|
|
|
|
|
|
epthru_pci_blk = raid_dev->epthru_pool;
|
|
for (i = 0; i < MBOX_MAX_SCSI_CMDS && epthru_pci_blk[i].vaddr; i++) {
|
|
pci_pool_free(raid_dev->epthru_pool_handle,
|
|
epthru_pci_blk[i].vaddr, epthru_pci_blk[i].dma_addr);
|
|
}
|
|
if (raid_dev->epthru_pool_handle)
|
|
pci_pool_destroy(raid_dev->epthru_pool_handle);
|
|
|
|
|
|
mbox_pci_blk = raid_dev->mbox_pool;
|
|
for (i = 0; i < MBOX_MAX_SCSI_CMDS && mbox_pci_blk[i].vaddr; i++) {
|
|
pci_pool_free(raid_dev->mbox_pool_handle,
|
|
mbox_pci_blk[i].vaddr, mbox_pci_blk[i].dma_addr);
|
|
}
|
|
if (raid_dev->mbox_pool_handle)
|
|
pci_pool_destroy(raid_dev->mbox_pool_handle);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_alloc_scb - detach and return a scb from the free list
|
|
* @adapter : controller's soft state
|
|
* @scp : pointer to the scsi command to be executed
|
|
*
|
|
* Return the scb from the head of the free list. %NULL if there are none
|
|
* available.
|
|
*/
|
|
static scb_t *
|
|
megaraid_alloc_scb(adapter_t *adapter, struct scsi_cmnd *scp)
|
|
{
|
|
struct list_head *head = &adapter->kscb_pool;
|
|
scb_t *scb = NULL;
|
|
unsigned long flags;
|
|
|
|
// detach scb from free pool
|
|
spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter), flags);
|
|
|
|
if (list_empty(head)) {
|
|
spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags);
|
|
return NULL;
|
|
}
|
|
|
|
scb = list_entry(head->next, scb_t, list);
|
|
list_del_init(&scb->list);
|
|
|
|
spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags);
|
|
|
|
scb->state = SCB_ACTIVE;
|
|
scb->scp = scp;
|
|
scb->dma_type = MRAID_DMA_NONE;
|
|
|
|
return scb;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_dealloc_scb - return the scb to the free pool
|
|
* @adapter : controller's soft state
|
|
* @scb : scb to be freed
|
|
*
|
|
* Return the scb back to the free list of scbs. The caller must 'flush' the
|
|
* SCB before calling us. E.g., performing pci_unamp and/or pci_sync etc.
|
|
* NOTE NOTE: Make sure the scb is not on any list before calling this
|
|
* routine.
|
|
*/
|
|
static inline void
|
|
megaraid_dealloc_scb(adapter_t *adapter, scb_t *scb)
|
|
{
|
|
unsigned long flags;
|
|
|
|
// put scb in the free pool
|
|
scb->state = SCB_FREE;
|
|
scb->scp = NULL;
|
|
spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter), flags);
|
|
|
|
list_add(&scb->list, &adapter->kscb_pool);
|
|
|
|
spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_mbox_mksgl - make the scatter-gather list
|
|
* @adapter : controller's soft state
|
|
* @scb : scsi control block
|
|
*
|
|
* Prepare the scatter-gather list.
|
|
*/
|
|
static int
|
|
megaraid_mbox_mksgl(adapter_t *adapter, scb_t *scb)
|
|
{
|
|
struct scatterlist *sgl;
|
|
mbox_ccb_t *ccb;
|
|
struct scsi_cmnd *scp;
|
|
int sgcnt;
|
|
int i;
|
|
|
|
|
|
scp = scb->scp;
|
|
ccb = (mbox_ccb_t *)scb->ccb;
|
|
|
|
sgcnt = scsi_dma_map(scp);
|
|
BUG_ON(sgcnt < 0 || sgcnt > adapter->sglen);
|
|
|
|
// no mapping required if no data to be transferred
|
|
if (!sgcnt)
|
|
return 0;
|
|
|
|
scb->dma_type = MRAID_DMA_WSG;
|
|
|
|
scsi_for_each_sg(scp, sgl, sgcnt, i) {
|
|
ccb->sgl64[i].address = sg_dma_address(sgl);
|
|
ccb->sgl64[i].length = sg_dma_len(sgl);
|
|
}
|
|
|
|
// Return count of SG nodes
|
|
return sgcnt;
|
|
}
|
|
|
|
|
|
/**
|
|
* mbox_post_cmd - issue a mailbox command
|
|
* @adapter : controller's soft state
|
|
* @scb : command to be issued
|
|
*
|
|
* Post the command to the controller if mailbox is available.
|
|
*/
|
|
static int
|
|
mbox_post_cmd(adapter_t *adapter, scb_t *scb)
|
|
{
|
|
mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
|
|
mbox64_t *mbox64;
|
|
mbox_t *mbox;
|
|
mbox_ccb_t *ccb;
|
|
unsigned long flags;
|
|
unsigned int i = 0;
|
|
|
|
|
|
ccb = (mbox_ccb_t *)scb->ccb;
|
|
mbox = raid_dev->mbox;
|
|
mbox64 = raid_dev->mbox64;
|
|
|
|
/*
|
|
* Check for busy mailbox. If it is, return failure - the caller
|
|
* should retry later.
|
|
*/
|
|
spin_lock_irqsave(MAILBOX_LOCK(raid_dev), flags);
|
|
|
|
if (unlikely(mbox->busy)) {
|
|
do {
|
|
udelay(1);
|
|
i++;
|
|
rmb();
|
|
} while(mbox->busy && (i < max_mbox_busy_wait));
|
|
|
|
if (mbox->busy) {
|
|
|
|
spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags);
|
|
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
|
|
// Copy this command's mailbox data into "adapter's" mailbox
|
|
memcpy((caddr_t)mbox64, (caddr_t)ccb->mbox64, 22);
|
|
mbox->cmdid = scb->sno;
|
|
|
|
adapter->outstanding_cmds++;
|
|
|
|
if (scb->dma_direction == PCI_DMA_TODEVICE)
|
|
pci_dma_sync_sg_for_device(adapter->pdev,
|
|
scsi_sglist(scb->scp),
|
|
scsi_sg_count(scb->scp),
|
|
PCI_DMA_TODEVICE);
|
|
|
|
mbox->busy = 1; // Set busy
|
|
mbox->poll = 0;
|
|
mbox->ack = 0;
|
|
wmb();
|
|
|
|
WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1);
|
|
|
|
spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_queue_command - generic queue entry point for all LLDs
|
|
* @scp : pointer to the scsi command to be executed
|
|
* @done : callback routine to be called after the cmd has be completed
|
|
*
|
|
* Queue entry point for mailbox based controllers.
|
|
*/
|
|
static int
|
|
megaraid_queue_command_lck(struct scsi_cmnd *scp, void (*done)(struct scsi_cmnd *))
|
|
{
|
|
adapter_t *adapter;
|
|
scb_t *scb;
|
|
int if_busy;
|
|
|
|
adapter = SCP2ADAPTER(scp);
|
|
scp->scsi_done = done;
|
|
scp->result = 0;
|
|
|
|
/*
|
|
* Allocate and build a SCB request
|
|
* if_busy flag will be set if megaraid_mbox_build_cmd() command could
|
|
* not allocate scb. We will return non-zero status in that case.
|
|
* NOTE: scb can be null even though certain commands completed
|
|
* successfully, e.g., MODE_SENSE and TEST_UNIT_READY, it would
|
|
* return 0 in that case, and we would do the callback right away.
|
|
*/
|
|
if_busy = 0;
|
|
scb = megaraid_mbox_build_cmd(adapter, scp, &if_busy);
|
|
if (!scb) { // command already completed
|
|
done(scp);
|
|
return 0;
|
|
}
|
|
|
|
megaraid_mbox_runpendq(adapter, scb);
|
|
return if_busy;
|
|
}
|
|
|
|
static DEF_SCSI_QCMD(megaraid_queue_command)
|
|
|
|
/**
|
|
* megaraid_mbox_build_cmd - transform the mid-layer scsi commands
|
|
* @adapter : controller's soft state
|
|
* @scp : mid-layer scsi command pointer
|
|
* @busy : set if request could not be completed because of lack of
|
|
* resources
|
|
*
|
|
* Transform the mid-layer scsi command to megaraid firmware lingua.
|
|
* Convert the command issued by mid-layer to format understood by megaraid
|
|
* firmware. We also complete certain commands without sending them to firmware.
|
|
*/
|
|
static scb_t *
|
|
megaraid_mbox_build_cmd(adapter_t *adapter, struct scsi_cmnd *scp, int *busy)
|
|
{
|
|
mraid_device_t *rdev = ADAP2RAIDDEV(adapter);
|
|
int channel;
|
|
int target;
|
|
int islogical;
|
|
mbox_ccb_t *ccb;
|
|
mraid_passthru_t *pthru;
|
|
mbox64_t *mbox64;
|
|
mbox_t *mbox;
|
|
scb_t *scb;
|
|
char skip[] = "skipping";
|
|
char scan[] = "scanning";
|
|
char *ss;
|
|
|
|
|
|
/*
|
|
* Get the appropriate device map for the device this command is
|
|
* intended for
|
|
*/
|
|
MRAID_GET_DEVICE_MAP(adapter, scp, channel, target, islogical);
|
|
|
|
/*
|
|
* Logical drive commands
|
|
*/
|
|
if (islogical) {
|
|
switch (scp->cmnd[0]) {
|
|
case TEST_UNIT_READY:
|
|
/*
|
|
* Do we support clustering and is the support enabled
|
|
* If no, return success always
|
|
*/
|
|
if (!adapter->ha) {
|
|
scp->result = (DID_OK << 16);
|
|
return NULL;
|
|
}
|
|
|
|
if (!(scb = megaraid_alloc_scb(adapter, scp))) {
|
|
scp->result = (DID_ERROR << 16);
|
|
*busy = 1;
|
|
return NULL;
|
|
}
|
|
|
|
scb->dma_direction = scp->sc_data_direction;
|
|
scb->dev_channel = 0xFF;
|
|
scb->dev_target = target;
|
|
ccb = (mbox_ccb_t *)scb->ccb;
|
|
|
|
/*
|
|
* The command id will be provided by the command
|
|
* issuance routine
|
|
*/
|
|
ccb->raw_mbox[0] = CLUSTER_CMD;
|
|
ccb->raw_mbox[2] = RESERVATION_STATUS;
|
|
ccb->raw_mbox[3] = target;
|
|
|
|
return scb;
|
|
|
|
case MODE_SENSE:
|
|
{
|
|
struct scatterlist *sgl;
|
|
caddr_t vaddr;
|
|
|
|
sgl = scsi_sglist(scp);
|
|
if (sg_page(sgl)) {
|
|
vaddr = (caddr_t) sg_virt(&sgl[0]);
|
|
|
|
memset(vaddr, 0, scp->cmnd[4]);
|
|
}
|
|
else {
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid mailbox: invalid sg:%d\n",
|
|
__LINE__));
|
|
}
|
|
}
|
|
scp->result = (DID_OK << 16);
|
|
return NULL;
|
|
|
|
case INQUIRY:
|
|
/*
|
|
* Display the channel scan for logical drives
|
|
* Do not display scan for a channel if already done.
|
|
*/
|
|
if (!(rdev->last_disp & (1L << SCP2CHANNEL(scp)))) {
|
|
|
|
con_log(CL_ANN, (KERN_INFO
|
|
"scsi[%d]: scanning scsi channel %d",
|
|
adapter->host->host_no,
|
|
SCP2CHANNEL(scp)));
|
|
|
|
con_log(CL_ANN, (
|
|
" [virtual] for logical drives\n"));
|
|
|
|
rdev->last_disp |= (1L << SCP2CHANNEL(scp));
|
|
}
|
|
|
|
if (scp->cmnd[1] & MEGA_SCSI_INQ_EVPD) {
|
|
scp->sense_buffer[0] = 0x70;
|
|
scp->sense_buffer[2] = ILLEGAL_REQUEST;
|
|
scp->sense_buffer[12] = MEGA_INVALID_FIELD_IN_CDB;
|
|
scp->result = CHECK_CONDITION << 1;
|
|
return NULL;
|
|
}
|
|
|
|
/* Fall through */
|
|
|
|
case READ_CAPACITY:
|
|
/*
|
|
* Do not allow LUN > 0 for logical drives and
|
|
* requests for more than 40 logical drives
|
|
*/
|
|
if (SCP2LUN(scp)) {
|
|
scp->result = (DID_BAD_TARGET << 16);
|
|
return NULL;
|
|
}
|
|
if ((target % 0x80) >= MAX_LOGICAL_DRIVES_40LD) {
|
|
scp->result = (DID_BAD_TARGET << 16);
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/* Allocate a SCB and initialize passthru */
|
|
if (!(scb = megaraid_alloc_scb(adapter, scp))) {
|
|
scp->result = (DID_ERROR << 16);
|
|
*busy = 1;
|
|
return NULL;
|
|
}
|
|
|
|
ccb = (mbox_ccb_t *)scb->ccb;
|
|
scb->dev_channel = 0xFF;
|
|
scb->dev_target = target;
|
|
pthru = ccb->pthru;
|
|
mbox = ccb->mbox;
|
|
mbox64 = ccb->mbox64;
|
|
|
|
pthru->timeout = 0;
|
|
pthru->ars = 1;
|
|
pthru->reqsenselen = 14;
|
|
pthru->islogical = 1;
|
|
pthru->logdrv = target;
|
|
pthru->cdblen = scp->cmd_len;
|
|
memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
|
|
|
|
mbox->cmd = MBOXCMD_PASSTHRU64;
|
|
scb->dma_direction = scp->sc_data_direction;
|
|
|
|
pthru->dataxferlen = scsi_bufflen(scp);
|
|
pthru->dataxferaddr = ccb->sgl_dma_h;
|
|
pthru->numsge = megaraid_mbox_mksgl(adapter,
|
|
scb);
|
|
|
|
mbox->xferaddr = 0xFFFFFFFF;
|
|
mbox64->xferaddr_lo = (uint32_t )ccb->pthru_dma_h;
|
|
mbox64->xferaddr_hi = 0;
|
|
|
|
return scb;
|
|
|
|
case READ_6:
|
|
case WRITE_6:
|
|
case READ_10:
|
|
case WRITE_10:
|
|
case READ_12:
|
|
case WRITE_12:
|
|
|
|
/*
|
|
* Allocate a SCB and initialize mailbox
|
|
*/
|
|
if (!(scb = megaraid_alloc_scb(adapter, scp))) {
|
|
scp->result = (DID_ERROR << 16);
|
|
*busy = 1;
|
|
return NULL;
|
|
}
|
|
ccb = (mbox_ccb_t *)scb->ccb;
|
|
scb->dev_channel = 0xFF;
|
|
scb->dev_target = target;
|
|
mbox = ccb->mbox;
|
|
mbox64 = ccb->mbox64;
|
|
mbox->logdrv = target;
|
|
|
|
/*
|
|
* A little HACK: 2nd bit is zero for all scsi read
|
|
* commands and is set for all scsi write commands
|
|
*/
|
|
mbox->cmd = (scp->cmnd[0] & 0x02) ? MBOXCMD_LWRITE64:
|
|
MBOXCMD_LREAD64 ;
|
|
|
|
/*
|
|
* 6-byte READ(0x08) or WRITE(0x0A) cdb
|
|
*/
|
|
if (scp->cmd_len == 6) {
|
|
mbox->numsectors = (uint32_t)scp->cmnd[4];
|
|
mbox->lba =
|
|
((uint32_t)scp->cmnd[1] << 16) |
|
|
((uint32_t)scp->cmnd[2] << 8) |
|
|
(uint32_t)scp->cmnd[3];
|
|
|
|
mbox->lba &= 0x1FFFFF;
|
|
}
|
|
|
|
/*
|
|
* 10-byte READ(0x28) or WRITE(0x2A) cdb
|
|
*/
|
|
else if (scp->cmd_len == 10) {
|
|
mbox->numsectors =
|
|
(uint32_t)scp->cmnd[8] |
|
|
((uint32_t)scp->cmnd[7] << 8);
|
|
mbox->lba =
|
|
((uint32_t)scp->cmnd[2] << 24) |
|
|
((uint32_t)scp->cmnd[3] << 16) |
|
|
((uint32_t)scp->cmnd[4] << 8) |
|
|
(uint32_t)scp->cmnd[5];
|
|
}
|
|
|
|
/*
|
|
* 12-byte READ(0xA8) or WRITE(0xAA) cdb
|
|
*/
|
|
else if (scp->cmd_len == 12) {
|
|
mbox->lba =
|
|
((uint32_t)scp->cmnd[2] << 24) |
|
|
((uint32_t)scp->cmnd[3] << 16) |
|
|
((uint32_t)scp->cmnd[4] << 8) |
|
|
(uint32_t)scp->cmnd[5];
|
|
|
|
mbox->numsectors =
|
|
((uint32_t)scp->cmnd[6] << 24) |
|
|
((uint32_t)scp->cmnd[7] << 16) |
|
|
((uint32_t)scp->cmnd[8] << 8) |
|
|
(uint32_t)scp->cmnd[9];
|
|
}
|
|
else {
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: unsupported CDB length\n"));
|
|
|
|
megaraid_dealloc_scb(adapter, scb);
|
|
|
|
scp->result = (DID_ERROR << 16);
|
|
return NULL;
|
|
}
|
|
|
|
scb->dma_direction = scp->sc_data_direction;
|
|
|
|
// Calculate Scatter-Gather info
|
|
mbox64->xferaddr_lo = (uint32_t )ccb->sgl_dma_h;
|
|
mbox->numsge = megaraid_mbox_mksgl(adapter,
|
|
scb);
|
|
mbox->xferaddr = 0xFFFFFFFF;
|
|
mbox64->xferaddr_hi = 0;
|
|
|
|
return scb;
|
|
|
|
case RESERVE:
|
|
case RELEASE:
|
|
/*
|
|
* Do we support clustering and is the support enabled
|
|
*/
|
|
if (!adapter->ha) {
|
|
scp->result = (DID_BAD_TARGET << 16);
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Allocate a SCB and initialize mailbox
|
|
*/
|
|
if (!(scb = megaraid_alloc_scb(adapter, scp))) {
|
|
scp->result = (DID_ERROR << 16);
|
|
*busy = 1;
|
|
return NULL;
|
|
}
|
|
|
|
ccb = (mbox_ccb_t *)scb->ccb;
|
|
scb->dev_channel = 0xFF;
|
|
scb->dev_target = target;
|
|
ccb->raw_mbox[0] = CLUSTER_CMD;
|
|
ccb->raw_mbox[2] = (scp->cmnd[0] == RESERVE) ?
|
|
RESERVE_LD : RELEASE_LD;
|
|
|
|
ccb->raw_mbox[3] = target;
|
|
scb->dma_direction = scp->sc_data_direction;
|
|
|
|
return scb;
|
|
|
|
default:
|
|
scp->result = (DID_BAD_TARGET << 16);
|
|
return NULL;
|
|
}
|
|
}
|
|
else { // Passthru device commands
|
|
|
|
// Do not allow access to target id > 15 or LUN > 7
|
|
if (target > 15 || SCP2LUN(scp) > 7) {
|
|
scp->result = (DID_BAD_TARGET << 16);
|
|
return NULL;
|
|
}
|
|
|
|
// if fast load option was set and scan for last device is
|
|
// over, reset the fast_load flag so that during a possible
|
|
// next scan, devices can be made available
|
|
if (rdev->fast_load && (target == 15) &&
|
|
(SCP2CHANNEL(scp) == adapter->max_channel -1)) {
|
|
|
|
con_log(CL_ANN, (KERN_INFO
|
|
"megaraid[%d]: physical device scan re-enabled\n",
|
|
adapter->host->host_no));
|
|
rdev->fast_load = 0;
|
|
}
|
|
|
|
/*
|
|
* Display the channel scan for physical devices
|
|
*/
|
|
if (!(rdev->last_disp & (1L << SCP2CHANNEL(scp)))) {
|
|
|
|
ss = rdev->fast_load ? skip : scan;
|
|
|
|
con_log(CL_ANN, (KERN_INFO
|
|
"scsi[%d]: %s scsi channel %d [Phy %d]",
|
|
adapter->host->host_no, ss, SCP2CHANNEL(scp),
|
|
channel));
|
|
|
|
con_log(CL_ANN, (
|
|
" for non-raid devices\n"));
|
|
|
|
rdev->last_disp |= (1L << SCP2CHANNEL(scp));
|
|
}
|
|
|
|
// disable channel sweep if fast load option given
|
|
if (rdev->fast_load) {
|
|
scp->result = (DID_BAD_TARGET << 16);
|
|
return NULL;
|
|
}
|
|
|
|
// Allocate a SCB and initialize passthru
|
|
if (!(scb = megaraid_alloc_scb(adapter, scp))) {
|
|
scp->result = (DID_ERROR << 16);
|
|
*busy = 1;
|
|
return NULL;
|
|
}
|
|
|
|
ccb = (mbox_ccb_t *)scb->ccb;
|
|
scb->dev_channel = channel;
|
|
scb->dev_target = target;
|
|
scb->dma_direction = scp->sc_data_direction;
|
|
mbox = ccb->mbox;
|
|
mbox64 = ccb->mbox64;
|
|
|
|
// Does this firmware support extended CDBs
|
|
if (adapter->max_cdb_sz == 16) {
|
|
mbox->cmd = MBOXCMD_EXTPTHRU;
|
|
|
|
megaraid_mbox_prepare_epthru(adapter, scb, scp);
|
|
|
|
mbox64->xferaddr_lo = (uint32_t)ccb->epthru_dma_h;
|
|
mbox64->xferaddr_hi = 0;
|
|
mbox->xferaddr = 0xFFFFFFFF;
|
|
}
|
|
else {
|
|
mbox->cmd = MBOXCMD_PASSTHRU64;
|
|
|
|
megaraid_mbox_prepare_pthru(adapter, scb, scp);
|
|
|
|
mbox64->xferaddr_lo = (uint32_t)ccb->pthru_dma_h;
|
|
mbox64->xferaddr_hi = 0;
|
|
mbox->xferaddr = 0xFFFFFFFF;
|
|
}
|
|
return scb;
|
|
}
|
|
|
|
// NOT REACHED
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_mbox_runpendq - execute commands queued in the pending queue
|
|
* @adapter : controller's soft state
|
|
* @scb_q : SCB to be queued in the pending list
|
|
*
|
|
* Scan the pending list for commands which are not yet issued and try to
|
|
* post to the controller. The SCB can be a null pointer, which would indicate
|
|
* no SCB to be queue, just try to execute the ones in the pending list.
|
|
*
|
|
* NOTE: We do not actually traverse the pending list. The SCBs are plucked
|
|
* out from the head of the pending list. If it is successfully issued, the
|
|
* next SCB is at the head now.
|
|
*/
|
|
static void
|
|
megaraid_mbox_runpendq(adapter_t *adapter, scb_t *scb_q)
|
|
{
|
|
scb_t *scb;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags);
|
|
|
|
if (scb_q) {
|
|
scb_q->state = SCB_PENDQ;
|
|
list_add_tail(&scb_q->list, &adapter->pend_list);
|
|
}
|
|
|
|
// if the adapter in not in quiescent mode, post the commands to FW
|
|
if (adapter->quiescent) {
|
|
spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags);
|
|
return;
|
|
}
|
|
|
|
while (!list_empty(&adapter->pend_list)) {
|
|
|
|
assert_spin_locked(PENDING_LIST_LOCK(adapter));
|
|
|
|
scb = list_entry(adapter->pend_list.next, scb_t, list);
|
|
|
|
// remove the scb from the pending list and try to
|
|
// issue. If we are unable to issue it, put back in
|
|
// the pending list and return
|
|
|
|
list_del_init(&scb->list);
|
|
|
|
spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags);
|
|
|
|
// if mailbox was busy, return SCB back to pending
|
|
// list. Make sure to add at the head, since that's
|
|
// where it would have been removed from
|
|
|
|
scb->state = SCB_ISSUED;
|
|
|
|
if (mbox_post_cmd(adapter, scb) != 0) {
|
|
|
|
spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags);
|
|
|
|
scb->state = SCB_PENDQ;
|
|
|
|
list_add(&scb->list, &adapter->pend_list);
|
|
|
|
spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter),
|
|
flags);
|
|
|
|
return;
|
|
}
|
|
|
|
spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags);
|
|
}
|
|
|
|
spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags);
|
|
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_mbox_prepare_pthru - prepare a command for physical devices
|
|
* @adapter : pointer to controller's soft state
|
|
* @scb : scsi control block
|
|
* @scp : scsi command from the mid-layer
|
|
*
|
|
* Prepare a command for the scsi physical devices.
|
|
*/
|
|
static void
|
|
megaraid_mbox_prepare_pthru(adapter_t *adapter, scb_t *scb,
|
|
struct scsi_cmnd *scp)
|
|
{
|
|
mbox_ccb_t *ccb;
|
|
mraid_passthru_t *pthru;
|
|
uint8_t channel;
|
|
uint8_t target;
|
|
|
|
ccb = (mbox_ccb_t *)scb->ccb;
|
|
pthru = ccb->pthru;
|
|
channel = scb->dev_channel;
|
|
target = scb->dev_target;
|
|
|
|
// 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout
|
|
pthru->timeout = 4;
|
|
pthru->ars = 1;
|
|
pthru->islogical = 0;
|
|
pthru->channel = 0;
|
|
pthru->target = (channel << 4) | target;
|
|
pthru->logdrv = SCP2LUN(scp);
|
|
pthru->reqsenselen = 14;
|
|
pthru->cdblen = scp->cmd_len;
|
|
|
|
memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
|
|
|
|
if (scsi_bufflen(scp)) {
|
|
pthru->dataxferlen = scsi_bufflen(scp);
|
|
pthru->dataxferaddr = ccb->sgl_dma_h;
|
|
pthru->numsge = megaraid_mbox_mksgl(adapter, scb);
|
|
}
|
|
else {
|
|
pthru->dataxferaddr = 0;
|
|
pthru->dataxferlen = 0;
|
|
pthru->numsge = 0;
|
|
}
|
|
return;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_mbox_prepare_epthru - prepare a command for physical devices
|
|
* @adapter : pointer to controller's soft state
|
|
* @scb : scsi control block
|
|
* @scp : scsi command from the mid-layer
|
|
*
|
|
* Prepare a command for the scsi physical devices. This routine prepares
|
|
* commands for devices which can take extended CDBs (>10 bytes).
|
|
*/
|
|
static void
|
|
megaraid_mbox_prepare_epthru(adapter_t *adapter, scb_t *scb,
|
|
struct scsi_cmnd *scp)
|
|
{
|
|
mbox_ccb_t *ccb;
|
|
mraid_epassthru_t *epthru;
|
|
uint8_t channel;
|
|
uint8_t target;
|
|
|
|
ccb = (mbox_ccb_t *)scb->ccb;
|
|
epthru = ccb->epthru;
|
|
channel = scb->dev_channel;
|
|
target = scb->dev_target;
|
|
|
|
// 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout
|
|
epthru->timeout = 4;
|
|
epthru->ars = 1;
|
|
epthru->islogical = 0;
|
|
epthru->channel = 0;
|
|
epthru->target = (channel << 4) | target;
|
|
epthru->logdrv = SCP2LUN(scp);
|
|
epthru->reqsenselen = 14;
|
|
epthru->cdblen = scp->cmd_len;
|
|
|
|
memcpy(epthru->cdb, scp->cmnd, scp->cmd_len);
|
|
|
|
if (scsi_bufflen(scp)) {
|
|
epthru->dataxferlen = scsi_bufflen(scp);
|
|
epthru->dataxferaddr = ccb->sgl_dma_h;
|
|
epthru->numsge = megaraid_mbox_mksgl(adapter, scb);
|
|
}
|
|
else {
|
|
epthru->dataxferaddr = 0;
|
|
epthru->dataxferlen = 0;
|
|
epthru->numsge = 0;
|
|
}
|
|
return;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_ack_sequence - interrupt ack sequence for memory mapped HBAs
|
|
* @adapter : controller's soft state
|
|
*
|
|
* Interrupt acknowledgement sequence for memory mapped HBAs. Find out the
|
|
* completed command and put them on the completed list for later processing.
|
|
*
|
|
* Returns: 1 if the interrupt is valid, 0 otherwise
|
|
*/
|
|
static int
|
|
megaraid_ack_sequence(adapter_t *adapter)
|
|
{
|
|
mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
|
|
mbox_t *mbox;
|
|
scb_t *scb;
|
|
uint8_t nstatus;
|
|
uint8_t completed[MBOX_MAX_FIRMWARE_STATUS];
|
|
struct list_head clist;
|
|
int handled;
|
|
uint32_t dword;
|
|
unsigned long flags;
|
|
int i, j;
|
|
|
|
|
|
mbox = raid_dev->mbox;
|
|
|
|
// move the SCBs from the firmware completed array to our local list
|
|
INIT_LIST_HEAD(&clist);
|
|
|
|
// loop till F/W has more commands for us to complete
|
|
handled = 0;
|
|
spin_lock_irqsave(MAILBOX_LOCK(raid_dev), flags);
|
|
do {
|
|
/*
|
|
* Check if a valid interrupt is pending. If found, force the
|
|
* interrupt line low.
|
|
*/
|
|
dword = RDOUTDOOR(raid_dev);
|
|
if (dword != 0x10001234) break;
|
|
|
|
handled = 1;
|
|
|
|
WROUTDOOR(raid_dev, 0x10001234);
|
|
|
|
nstatus = 0;
|
|
// wait for valid numstatus to post
|
|
for (i = 0; i < 0xFFFFF; i++) {
|
|
if (mbox->numstatus != 0xFF) {
|
|
nstatus = mbox->numstatus;
|
|
break;
|
|
}
|
|
rmb();
|
|
}
|
|
mbox->numstatus = 0xFF;
|
|
|
|
adapter->outstanding_cmds -= nstatus;
|
|
|
|
for (i = 0; i < nstatus; i++) {
|
|
|
|
// wait for valid command index to post
|
|
for (j = 0; j < 0xFFFFF; j++) {
|
|
if (mbox->completed[i] != 0xFF) break;
|
|
rmb();
|
|
}
|
|
completed[i] = mbox->completed[i];
|
|
mbox->completed[i] = 0xFF;
|
|
|
|
if (completed[i] == 0xFF) {
|
|
con_log(CL_ANN, (KERN_CRIT
|
|
"megaraid: command posting timed out\n"));
|
|
|
|
BUG();
|
|
continue;
|
|
}
|
|
|
|
// Get SCB associated with this command id
|
|
if (completed[i] >= MBOX_MAX_SCSI_CMDS) {
|
|
// a cmm command
|
|
scb = adapter->uscb_list + (completed[i] -
|
|
MBOX_MAX_SCSI_CMDS);
|
|
}
|
|
else {
|
|
// an os command
|
|
scb = adapter->kscb_list + completed[i];
|
|
}
|
|
|
|
scb->status = mbox->status;
|
|
list_add_tail(&scb->list, &clist);
|
|
}
|
|
|
|
// Acknowledge interrupt
|
|
WRINDOOR(raid_dev, 0x02);
|
|
|
|
} while(1);
|
|
|
|
spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags);
|
|
|
|
|
|
// put the completed commands in the completed list. DPC would
|
|
// complete these commands later
|
|
spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags);
|
|
|
|
list_splice(&clist, &adapter->completed_list);
|
|
|
|
spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags);
|
|
|
|
|
|
// schedule the DPC if there is some work for it
|
|
if (handled)
|
|
tasklet_schedule(&adapter->dpc_h);
|
|
|
|
return handled;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_isr - isr for memory based mailbox based controllers
|
|
* @irq : irq
|
|
* @devp : pointer to our soft state
|
|
*
|
|
* Interrupt service routine for memory-mapped mailbox controllers.
|
|
*/
|
|
static irqreturn_t
|
|
megaraid_isr(int irq, void *devp)
|
|
{
|
|
adapter_t *adapter = devp;
|
|
int handled;
|
|
|
|
handled = megaraid_ack_sequence(adapter);
|
|
|
|
/* Loop through any pending requests */
|
|
if (!adapter->quiescent) {
|
|
megaraid_mbox_runpendq(adapter, NULL);
|
|
}
|
|
|
|
return IRQ_RETVAL(handled);
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_mbox_sync_scb - sync kernel buffers
|
|
* @adapter : controller's soft state
|
|
* @scb : pointer to the resource packet
|
|
*
|
|
* DMA sync if required.
|
|
*/
|
|
static void
|
|
megaraid_mbox_sync_scb(adapter_t *adapter, scb_t *scb)
|
|
{
|
|
mbox_ccb_t *ccb;
|
|
|
|
ccb = (mbox_ccb_t *)scb->ccb;
|
|
|
|
if (scb->dma_direction == PCI_DMA_FROMDEVICE)
|
|
pci_dma_sync_sg_for_cpu(adapter->pdev,
|
|
scsi_sglist(scb->scp),
|
|
scsi_sg_count(scb->scp),
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
scsi_dma_unmap(scb->scp);
|
|
return;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_mbox_dpc - the tasklet to complete the commands from completed list
|
|
* @devp : pointer to HBA soft state
|
|
*
|
|
* Pick up the commands from the completed list and send back to the owners.
|
|
* This is a reentrant function and does not assume any locks are held while
|
|
* it is being called.
|
|
*/
|
|
static void
|
|
megaraid_mbox_dpc(unsigned long devp)
|
|
{
|
|
adapter_t *adapter = (adapter_t *)devp;
|
|
mraid_device_t *raid_dev;
|
|
struct list_head clist;
|
|
struct scatterlist *sgl;
|
|
scb_t *scb;
|
|
scb_t *tmp;
|
|
struct scsi_cmnd *scp;
|
|
mraid_passthru_t *pthru;
|
|
mraid_epassthru_t *epthru;
|
|
mbox_ccb_t *ccb;
|
|
int islogical;
|
|
int pdev_index;
|
|
int pdev_state;
|
|
mbox_t *mbox;
|
|
unsigned long flags;
|
|
uint8_t c;
|
|
int status;
|
|
uioc_t *kioc;
|
|
|
|
|
|
if (!adapter) return;
|
|
|
|
raid_dev = ADAP2RAIDDEV(adapter);
|
|
|
|
// move the SCBs from the completed list to our local list
|
|
INIT_LIST_HEAD(&clist);
|
|
|
|
spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags);
|
|
|
|
list_splice_init(&adapter->completed_list, &clist);
|
|
|
|
spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags);
|
|
|
|
|
|
list_for_each_entry_safe(scb, tmp, &clist, list) {
|
|
|
|
status = scb->status;
|
|
scp = scb->scp;
|
|
ccb = (mbox_ccb_t *)scb->ccb;
|
|
pthru = ccb->pthru;
|
|
epthru = ccb->epthru;
|
|
mbox = ccb->mbox;
|
|
|
|
// Make sure f/w has completed a valid command
|
|
if (scb->state != SCB_ISSUED) {
|
|
con_log(CL_ANN, (KERN_CRIT
|
|
"megaraid critical err: invalid command %d:%d:%p\n",
|
|
scb->sno, scb->state, scp));
|
|
BUG();
|
|
continue; // Must never happen!
|
|
}
|
|
|
|
// check for the management command and complete it right away
|
|
if (scb->sno >= MBOX_MAX_SCSI_CMDS) {
|
|
scb->state = SCB_FREE;
|
|
scb->status = status;
|
|
|
|
// remove from local clist
|
|
list_del_init(&scb->list);
|
|
|
|
kioc = (uioc_t *)scb->gp;
|
|
kioc->status = 0;
|
|
|
|
megaraid_mbox_mm_done(adapter, scb);
|
|
|
|
continue;
|
|
}
|
|
|
|
// Was an abort issued for this command earlier
|
|
if (scb->state & SCB_ABORT) {
|
|
con_log(CL_ANN, (KERN_NOTICE
|
|
"megaraid: aborted cmd [%x] completed\n",
|
|
scb->sno));
|
|
}
|
|
|
|
/*
|
|
* If the inquiry came of a disk drive which is not part of
|
|
* any RAID array, expose it to the kernel. For this to be
|
|
* enabled, user must set the "megaraid_expose_unconf_disks"
|
|
* flag to 1 by specifying it on module parameter list.
|
|
* This would enable data migration off drives from other
|
|
* configurations.
|
|
*/
|
|
islogical = MRAID_IS_LOGICAL(adapter, scp);
|
|
if (scp->cmnd[0] == INQUIRY && status == 0 && islogical == 0
|
|
&& IS_RAID_CH(raid_dev, scb->dev_channel)) {
|
|
|
|
sgl = scsi_sglist(scp);
|
|
if (sg_page(sgl)) {
|
|
c = *(unsigned char *) sg_virt(&sgl[0]);
|
|
} else {
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid mailbox: invalid sg:%d\n",
|
|
__LINE__));
|
|
c = 0;
|
|
}
|
|
|
|
if ((c & 0x1F ) == TYPE_DISK) {
|
|
pdev_index = (scb->dev_channel * 16) +
|
|
scb->dev_target;
|
|
pdev_state =
|
|
raid_dev->pdrv_state[pdev_index] & 0x0F;
|
|
|
|
if (pdev_state == PDRV_ONLINE ||
|
|
pdev_state == PDRV_FAILED ||
|
|
pdev_state == PDRV_RBLD ||
|
|
pdev_state == PDRV_HOTSPARE ||
|
|
megaraid_expose_unconf_disks == 0) {
|
|
|
|
status = 0xF0;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Convert MegaRAID status to Linux error code
|
|
switch (status) {
|
|
|
|
case 0x00:
|
|
|
|
scp->result = (DID_OK << 16);
|
|
break;
|
|
|
|
case 0x02:
|
|
|
|
/* set sense_buffer and result fields */
|
|
if (mbox->cmd == MBOXCMD_PASSTHRU ||
|
|
mbox->cmd == MBOXCMD_PASSTHRU64) {
|
|
|
|
memcpy(scp->sense_buffer, pthru->reqsensearea,
|
|
14);
|
|
|
|
scp->result = DRIVER_SENSE << 24 |
|
|
DID_OK << 16 | CHECK_CONDITION << 1;
|
|
}
|
|
else {
|
|
if (mbox->cmd == MBOXCMD_EXTPTHRU) {
|
|
|
|
memcpy(scp->sense_buffer,
|
|
epthru->reqsensearea, 14);
|
|
|
|
scp->result = DRIVER_SENSE << 24 |
|
|
DID_OK << 16 |
|
|
CHECK_CONDITION << 1;
|
|
} else {
|
|
scp->sense_buffer[0] = 0x70;
|
|
scp->sense_buffer[2] = ABORTED_COMMAND;
|
|
scp->result = CHECK_CONDITION << 1;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 0x08:
|
|
|
|
scp->result = DID_BUS_BUSY << 16 | status;
|
|
break;
|
|
|
|
default:
|
|
|
|
/*
|
|
* If TEST_UNIT_READY fails, we know RESERVATION_STATUS
|
|
* failed
|
|
*/
|
|
if (scp->cmnd[0] == TEST_UNIT_READY) {
|
|
scp->result = DID_ERROR << 16 |
|
|
RESERVATION_CONFLICT << 1;
|
|
}
|
|
else
|
|
/*
|
|
* Error code returned is 1 if Reserve or Release
|
|
* failed or the input parameter is invalid
|
|
*/
|
|
if (status == 1 && (scp->cmnd[0] == RESERVE ||
|
|
scp->cmnd[0] == RELEASE)) {
|
|
|
|
scp->result = DID_ERROR << 16 |
|
|
RESERVATION_CONFLICT << 1;
|
|
}
|
|
else {
|
|
scp->result = DID_BAD_TARGET << 16 | status;
|
|
}
|
|
}
|
|
|
|
// print a debug message for all failed commands
|
|
if (status) {
|
|
megaraid_mbox_display_scb(adapter, scb);
|
|
}
|
|
|
|
// Free our internal resources and call the mid-layer callback
|
|
// routine
|
|
megaraid_mbox_sync_scb(adapter, scb);
|
|
|
|
// remove from local clist
|
|
list_del_init(&scb->list);
|
|
|
|
// put back in free list
|
|
megaraid_dealloc_scb(adapter, scb);
|
|
|
|
// send the scsi packet back to kernel
|
|
scp->scsi_done(scp);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_abort_handler - abort the scsi command
|
|
* @scp : command to be aborted
|
|
*
|
|
* Abort a previous SCSI request. Only commands on the pending list can be
|
|
* aborted. All the commands issued to the F/W must complete.
|
|
**/
|
|
static int
|
|
megaraid_abort_handler(struct scsi_cmnd *scp)
|
|
{
|
|
adapter_t *adapter;
|
|
mraid_device_t *raid_dev;
|
|
scb_t *scb;
|
|
scb_t *tmp;
|
|
int found;
|
|
unsigned long flags;
|
|
int i;
|
|
|
|
|
|
adapter = SCP2ADAPTER(scp);
|
|
raid_dev = ADAP2RAIDDEV(adapter);
|
|
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: aborting cmd=%x <c=%d t=%d l=%d>\n",
|
|
scp->cmnd[0], SCP2CHANNEL(scp),
|
|
SCP2TARGET(scp), SCP2LUN(scp)));
|
|
|
|
// If FW has stopped responding, simply return failure
|
|
if (raid_dev->hw_error) {
|
|
con_log(CL_ANN, (KERN_NOTICE
|
|
"megaraid: hw error, not aborting\n"));
|
|
return FAILED;
|
|
}
|
|
|
|
// There might a race here, where the command was completed by the
|
|
// firmware and now it is on the completed list. Before we could
|
|
// complete the command to the kernel in dpc, the abort came.
|
|
// Find out if this is the case to avoid the race.
|
|
scb = NULL;
|
|
spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags);
|
|
list_for_each_entry_safe(scb, tmp, &adapter->completed_list, list) {
|
|
|
|
if (scb->scp == scp) { // Found command
|
|
|
|
list_del_init(&scb->list); // from completed list
|
|
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: %d[%d:%d], abort from completed list\n",
|
|
scb->sno, scb->dev_channel, scb->dev_target));
|
|
|
|
scp->result = (DID_ABORT << 16);
|
|
scp->scsi_done(scp);
|
|
|
|
megaraid_dealloc_scb(adapter, scb);
|
|
|
|
spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter),
|
|
flags);
|
|
|
|
return SUCCESS;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags);
|
|
|
|
|
|
// Find out if this command is still on the pending list. If it is and
|
|
// was never issued, abort and return success. If the command is owned
|
|
// by the firmware, we must wait for it to complete by the FW.
|
|
spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags);
|
|
list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) {
|
|
|
|
if (scb->scp == scp) { // Found command
|
|
|
|
list_del_init(&scb->list); // from pending list
|
|
|
|
ASSERT(!(scb->state & SCB_ISSUED));
|
|
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid abort: [%d:%d], driver owner\n",
|
|
scb->dev_channel, scb->dev_target));
|
|
|
|
scp->result = (DID_ABORT << 16);
|
|
scp->scsi_done(scp);
|
|
|
|
megaraid_dealloc_scb(adapter, scb);
|
|
|
|
spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter),
|
|
flags);
|
|
|
|
return SUCCESS;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags);
|
|
|
|
|
|
// Check do we even own this command, in which case this would be
|
|
// owned by the firmware. The only way to locate the FW scb is to
|
|
// traverse through the list of all SCB, since driver does not
|
|
// maintain these SCBs on any list
|
|
found = 0;
|
|
spin_lock_irq(&adapter->lock);
|
|
for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) {
|
|
scb = adapter->kscb_list + i;
|
|
|
|
if (scb->scp == scp) {
|
|
|
|
found = 1;
|
|
|
|
if (!(scb->state & SCB_ISSUED)) {
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid abort: %d[%d:%d], invalid state\n",
|
|
scb->sno, scb->dev_channel, scb->dev_target));
|
|
BUG();
|
|
}
|
|
else {
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid abort: %d[%d:%d], fw owner\n",
|
|
scb->sno, scb->dev_channel, scb->dev_target));
|
|
}
|
|
}
|
|
}
|
|
spin_unlock_irq(&adapter->lock);
|
|
|
|
if (!found) {
|
|
con_log(CL_ANN, (KERN_WARNING "megaraid abort: do now own\n"));
|
|
|
|
// FIXME: Should there be a callback for this command?
|
|
return SUCCESS;
|
|
}
|
|
|
|
// We cannot actually abort a command owned by firmware, return
|
|
// failure and wait for reset. In host reset handler, we will find out
|
|
// if the HBA is still live
|
|
return FAILED;
|
|
}
|
|
|
|
/**
|
|
* megaraid_reset_handler - device reset handler for mailbox based driver
|
|
* @scp : reference command
|
|
*
|
|
* Reset handler for the mailbox based controller. First try to find out if
|
|
* the FW is still live, in which case the outstanding commands counter mut go
|
|
* down to 0. If that happens, also issue the reservation reset command to
|
|
* relinquish (possible) reservations on the logical drives connected to this
|
|
* host.
|
|
**/
|
|
static int
|
|
megaraid_reset_handler(struct scsi_cmnd *scp)
|
|
{
|
|
adapter_t *adapter;
|
|
scb_t *scb;
|
|
scb_t *tmp;
|
|
mraid_device_t *raid_dev;
|
|
unsigned long flags;
|
|
uint8_t raw_mbox[sizeof(mbox_t)];
|
|
int rval;
|
|
int recovery_window;
|
|
int recovering;
|
|
int i;
|
|
uioc_t *kioc;
|
|
|
|
adapter = SCP2ADAPTER(scp);
|
|
raid_dev = ADAP2RAIDDEV(adapter);
|
|
|
|
// return failure if adapter is not responding
|
|
if (raid_dev->hw_error) {
|
|
con_log(CL_ANN, (KERN_NOTICE
|
|
"megaraid: hw error, cannot reset\n"));
|
|
return FAILED;
|
|
}
|
|
|
|
|
|
// Under exceptional conditions, FW can take up to 3 minutes to
|
|
// complete command processing. Wait for additional 2 minutes for the
|
|
// pending commands counter to go down to 0. If it doesn't, let the
|
|
// controller be marked offline
|
|
// Also, reset all the commands currently owned by the driver
|
|
spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags);
|
|
list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) {
|
|
list_del_init(&scb->list); // from pending list
|
|
|
|
if (scb->sno >= MBOX_MAX_SCSI_CMDS) {
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: IOCTL packet with %d[%d:%d] being reset\n",
|
|
scb->sno, scb->dev_channel, scb->dev_target));
|
|
|
|
scb->status = -1;
|
|
|
|
kioc = (uioc_t *)scb->gp;
|
|
kioc->status = -EFAULT;
|
|
|
|
megaraid_mbox_mm_done(adapter, scb);
|
|
} else {
|
|
if (scb->scp == scp) { // Found command
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: %d[%d:%d], reset from pending list\n",
|
|
scb->sno, scb->dev_channel, scb->dev_target));
|
|
} else {
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: IO packet with %d[%d:%d] being reset\n",
|
|
scb->sno, scb->dev_channel, scb->dev_target));
|
|
}
|
|
|
|
scb->scp->result = (DID_RESET << 16);
|
|
scb->scp->scsi_done(scb->scp);
|
|
|
|
megaraid_dealloc_scb(adapter, scb);
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags);
|
|
|
|
if (adapter->outstanding_cmds) {
|
|
con_log(CL_ANN, (KERN_NOTICE
|
|
"megaraid: %d outstanding commands. Max wait %d sec\n",
|
|
adapter->outstanding_cmds,
|
|
(MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT)));
|
|
}
|
|
|
|
recovery_window = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT;
|
|
|
|
recovering = adapter->outstanding_cmds;
|
|
|
|
for (i = 0; i < recovery_window; i++) {
|
|
|
|
megaraid_ack_sequence(adapter);
|
|
|
|
// print a message once every 5 seconds only
|
|
if (!(i % 5)) {
|
|
con_log(CL_ANN, (
|
|
"megaraid mbox: Wait for %d commands to complete:%d\n",
|
|
adapter->outstanding_cmds,
|
|
(MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT) - i));
|
|
}
|
|
|
|
// bailout if no recovery happened in reset time
|
|
if (adapter->outstanding_cmds == 0) {
|
|
break;
|
|
}
|
|
|
|
msleep(1000);
|
|
}
|
|
|
|
spin_lock(&adapter->lock);
|
|
|
|
// If still outstanding commands, bail out
|
|
if (adapter->outstanding_cmds) {
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid mbox: critical hardware error!\n"));
|
|
|
|
raid_dev->hw_error = 1;
|
|
|
|
rval = FAILED;
|
|
goto out;
|
|
}
|
|
else {
|
|
con_log(CL_ANN, (KERN_NOTICE
|
|
"megaraid mbox: reset sequence completed successfully\n"));
|
|
}
|
|
|
|
|
|
// If the controller supports clustering, reset reservations
|
|
if (!adapter->ha) {
|
|
rval = SUCCESS;
|
|
goto out;
|
|
}
|
|
|
|
// clear reservations if any
|
|
raw_mbox[0] = CLUSTER_CMD;
|
|
raw_mbox[2] = RESET_RESERVATIONS;
|
|
|
|
rval = SUCCESS;
|
|
if (mbox_post_sync_cmd_fast(adapter, raw_mbox) == 0) {
|
|
con_log(CL_ANN,
|
|
(KERN_INFO "megaraid: reservation reset\n"));
|
|
}
|
|
else {
|
|
rval = FAILED;
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: reservation reset failed\n"));
|
|
}
|
|
|
|
out:
|
|
spin_unlock(&adapter->lock);
|
|
return rval;
|
|
}
|
|
|
|
/*
|
|
* START: internal commands library
|
|
*
|
|
* This section of the driver has the common routine used by the driver and
|
|
* also has all the FW routines
|
|
*/
|
|
|
|
/**
|
|
* mbox_post_sync_cmd() - blocking command to the mailbox based controllers
|
|
* @adapter : controller's soft state
|
|
* @raw_mbox : the mailbox
|
|
*
|
|
* Issue a scb in synchronous and non-interrupt mode for mailbox based
|
|
* controllers.
|
|
*/
|
|
static int
|
|
mbox_post_sync_cmd(adapter_t *adapter, uint8_t raw_mbox[])
|
|
{
|
|
mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
|
|
mbox64_t *mbox64;
|
|
mbox_t *mbox;
|
|
uint8_t status;
|
|
int i;
|
|
|
|
|
|
mbox64 = raid_dev->mbox64;
|
|
mbox = raid_dev->mbox;
|
|
|
|
/*
|
|
* Wait until mailbox is free
|
|
*/
|
|
if (megaraid_busywait_mbox(raid_dev) != 0)
|
|
goto blocked_mailbox;
|
|
|
|
/*
|
|
* Copy mailbox data into host structure
|
|
*/
|
|
memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 16);
|
|
mbox->cmdid = 0xFE;
|
|
mbox->busy = 1;
|
|
mbox->poll = 0;
|
|
mbox->ack = 0;
|
|
mbox->numstatus = 0xFF;
|
|
mbox->status = 0xFF;
|
|
|
|
wmb();
|
|
WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1);
|
|
|
|
// wait for maximum 1 second for status to post. If the status is not
|
|
// available within 1 second, assume FW is initializing and wait
|
|
// for an extended amount of time
|
|
if (mbox->numstatus == 0xFF) { // status not yet available
|
|
udelay(25);
|
|
|
|
for (i = 0; mbox->numstatus == 0xFF && i < 1000; i++) {
|
|
rmb();
|
|
msleep(1);
|
|
}
|
|
|
|
|
|
if (i == 1000) {
|
|
con_log(CL_ANN, (KERN_NOTICE
|
|
"megaraid mailbox: wait for FW to boot "));
|
|
|
|
for (i = 0; (mbox->numstatus == 0xFF) &&
|
|
(i < MBOX_RESET_WAIT); i++) {
|
|
rmb();
|
|
con_log(CL_ANN, ("\b\b\b\b\b[%03d]",
|
|
MBOX_RESET_WAIT - i));
|
|
msleep(1000);
|
|
}
|
|
|
|
if (i == MBOX_RESET_WAIT) {
|
|
|
|
con_log(CL_ANN, (
|
|
"\nmegaraid mailbox: status not available\n"));
|
|
|
|
return -1;
|
|
}
|
|
con_log(CL_ANN, ("\b\b\b\b\b[ok] \n"));
|
|
}
|
|
}
|
|
|
|
// wait for maximum 1 second for poll semaphore
|
|
if (mbox->poll != 0x77) {
|
|
udelay(25);
|
|
|
|
for (i = 0; (mbox->poll != 0x77) && (i < 1000); i++) {
|
|
rmb();
|
|
msleep(1);
|
|
}
|
|
|
|
if (i == 1000) {
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid mailbox: could not get poll semaphore\n"));
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x2);
|
|
wmb();
|
|
|
|
// wait for maximum 1 second for acknowledgement
|
|
if (RDINDOOR(raid_dev) & 0x2) {
|
|
udelay(25);
|
|
|
|
for (i = 0; (RDINDOOR(raid_dev) & 0x2) && (i < 1000); i++) {
|
|
rmb();
|
|
msleep(1);
|
|
}
|
|
|
|
if (i == 1000) {
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid mailbox: could not acknowledge\n"));
|
|
return -1;
|
|
}
|
|
}
|
|
mbox->poll = 0;
|
|
mbox->ack = 0x77;
|
|
|
|
status = mbox->status;
|
|
|
|
// invalidate the completed command id array. After command
|
|
// completion, firmware would write the valid id.
|
|
mbox->numstatus = 0xFF;
|
|
mbox->status = 0xFF;
|
|
for (i = 0; i < MBOX_MAX_FIRMWARE_STATUS; i++) {
|
|
mbox->completed[i] = 0xFF;
|
|
}
|
|
|
|
return status;
|
|
|
|
blocked_mailbox:
|
|
|
|
con_log(CL_ANN, (KERN_WARNING "megaraid: blocked mailbox\n") );
|
|
return -1;
|
|
}
|
|
|
|
|
|
/**
|
|
* mbox_post_sync_cmd_fast - blocking command to the mailbox based controllers
|
|
* @adapter : controller's soft state
|
|
* @raw_mbox : the mailbox
|
|
*
|
|
* Issue a scb in synchronous and non-interrupt mode for mailbox based
|
|
* controllers. This is a faster version of the synchronous command and
|
|
* therefore can be called in interrupt-context as well.
|
|
*/
|
|
static int
|
|
mbox_post_sync_cmd_fast(adapter_t *adapter, uint8_t raw_mbox[])
|
|
{
|
|
mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
|
|
mbox_t *mbox;
|
|
long i;
|
|
|
|
|
|
mbox = raid_dev->mbox;
|
|
|
|
// return immediately if the mailbox is busy
|
|
if (mbox->busy) return -1;
|
|
|
|
// Copy mailbox data into host structure
|
|
memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 14);
|
|
mbox->cmdid = 0xFE;
|
|
mbox->busy = 1;
|
|
mbox->poll = 0;
|
|
mbox->ack = 0;
|
|
mbox->numstatus = 0xFF;
|
|
mbox->status = 0xFF;
|
|
|
|
wmb();
|
|
WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1);
|
|
|
|
for (i = 0; i < MBOX_SYNC_WAIT_CNT; i++) {
|
|
if (mbox->numstatus != 0xFF) break;
|
|
rmb();
|
|
udelay(MBOX_SYNC_DELAY_200);
|
|
}
|
|
|
|
if (i == MBOX_SYNC_WAIT_CNT) {
|
|
// We may need to re-calibrate the counter
|
|
con_log(CL_ANN, (KERN_CRIT
|
|
"megaraid: fast sync command timed out\n"));
|
|
}
|
|
|
|
WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x2);
|
|
wmb();
|
|
|
|
return mbox->status;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_busywait_mbox() - Wait until the controller's mailbox is available
|
|
* @raid_dev : RAID device (HBA) soft state
|
|
*
|
|
* Wait until the controller's mailbox is available to accept more commands.
|
|
* Wait for at most 1 second.
|
|
*/
|
|
static int
|
|
megaraid_busywait_mbox(mraid_device_t *raid_dev)
|
|
{
|
|
mbox_t *mbox = raid_dev->mbox;
|
|
int i = 0;
|
|
|
|
if (mbox->busy) {
|
|
udelay(25);
|
|
for (i = 0; mbox->busy && i < 1000; i++)
|
|
msleep(1);
|
|
}
|
|
|
|
if (i < 1000) return 0;
|
|
else return -1;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_mbox_product_info - some static information about the controller
|
|
* @adapter : our soft state
|
|
*
|
|
* Issue commands to the controller to grab some parameters required by our
|
|
* caller.
|
|
*/
|
|
static int
|
|
megaraid_mbox_product_info(adapter_t *adapter)
|
|
{
|
|
mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
|
|
mbox_t *mbox;
|
|
uint8_t raw_mbox[sizeof(mbox_t)];
|
|
mraid_pinfo_t *pinfo;
|
|
dma_addr_t pinfo_dma_h;
|
|
mraid_inquiry3_t *mraid_inq3;
|
|
int i;
|
|
|
|
|
|
memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox));
|
|
mbox = (mbox_t *)raw_mbox;
|
|
|
|
/*
|
|
* Issue an ENQUIRY3 command to find out certain adapter parameters,
|
|
* e.g., max channels, max commands etc.
|
|
*/
|
|
pinfo = pci_zalloc_consistent(adapter->pdev, sizeof(mraid_pinfo_t),
|
|
&pinfo_dma_h);
|
|
|
|
if (pinfo == NULL) {
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: out of memory, %s %d\n", __func__,
|
|
__LINE__));
|
|
|
|
return -1;
|
|
}
|
|
|
|
mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h;
|
|
memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE);
|
|
|
|
raw_mbox[0] = FC_NEW_CONFIG;
|
|
raw_mbox[2] = NC_SUBOP_ENQUIRY3;
|
|
raw_mbox[3] = ENQ3_GET_SOLICITED_FULL;
|
|
|
|
// Issue the command
|
|
if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) {
|
|
|
|
con_log(CL_ANN, (KERN_WARNING "megaraid: Inquiry3 failed\n"));
|
|
|
|
pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t),
|
|
pinfo, pinfo_dma_h);
|
|
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Collect information about state of each physical drive
|
|
* attached to the controller. We will expose all the disks
|
|
* which are not part of RAID
|
|
*/
|
|
mraid_inq3 = (mraid_inquiry3_t *)adapter->ibuf;
|
|
for (i = 0; i < MBOX_MAX_PHYSICAL_DRIVES; i++) {
|
|
raid_dev->pdrv_state[i] = mraid_inq3->pdrv_state[i];
|
|
}
|
|
|
|
/*
|
|
* Get product info for information like number of channels,
|
|
* maximum commands supported.
|
|
*/
|
|
memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox));
|
|
mbox->xferaddr = (uint32_t)pinfo_dma_h;
|
|
|
|
raw_mbox[0] = FC_NEW_CONFIG;
|
|
raw_mbox[2] = NC_SUBOP_PRODUCT_INFO;
|
|
|
|
if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) {
|
|
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: product info failed\n"));
|
|
|
|
pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t),
|
|
pinfo, pinfo_dma_h);
|
|
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Setup some parameters for host, as required by our caller
|
|
*/
|
|
adapter->max_channel = pinfo->nchannels;
|
|
|
|
/*
|
|
* we will export all the logical drives on a single channel.
|
|
* Add 1 since inquires do not come for inititor ID
|
|
*/
|
|
adapter->max_target = MAX_LOGICAL_DRIVES_40LD + 1;
|
|
adapter->max_lun = 8; // up to 8 LUNs for non-disk devices
|
|
|
|
/*
|
|
* These are the maximum outstanding commands for the scsi-layer
|
|
*/
|
|
adapter->max_cmds = MBOX_MAX_SCSI_CMDS;
|
|
|
|
memset(adapter->fw_version, 0, VERSION_SIZE);
|
|
memset(adapter->bios_version, 0, VERSION_SIZE);
|
|
|
|
memcpy(adapter->fw_version, pinfo->fw_version, 4);
|
|
adapter->fw_version[4] = 0;
|
|
|
|
memcpy(adapter->bios_version, pinfo->bios_version, 4);
|
|
adapter->bios_version[4] = 0;
|
|
|
|
con_log(CL_ANN, (KERN_NOTICE
|
|
"megaraid: fw version:[%s] bios version:[%s]\n",
|
|
adapter->fw_version, adapter->bios_version));
|
|
|
|
pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), pinfo,
|
|
pinfo_dma_h);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* megaraid_mbox_extended_cdb - check for support for extended CDBs
|
|
* @adapter : soft state for the controller
|
|
*
|
|
* This routine check whether the controller in question supports extended
|
|
* ( > 10 bytes ) CDBs.
|
|
*/
|
|
static int
|
|
megaraid_mbox_extended_cdb(adapter_t *adapter)
|
|
{
|
|
mbox_t *mbox;
|
|
uint8_t raw_mbox[sizeof(mbox_t)];
|
|
int rval;
|
|
|
|
mbox = (mbox_t *)raw_mbox;
|
|
|
|
memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox));
|
|
mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h;
|
|
|
|
memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE);
|
|
|
|
raw_mbox[0] = MAIN_MISC_OPCODE;
|
|
raw_mbox[2] = SUPPORT_EXT_CDB;
|
|
|
|
/*
|
|
* Issue the command
|
|
*/
|
|
rval = 0;
|
|
if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) {
|
|
rval = -1;
|
|
}
|
|
|
|
return rval;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_mbox_support_ha - Do we support clustering
|
|
* @adapter : soft state for the controller
|
|
* @init_id : ID of the initiator
|
|
*
|
|
* Determine if the firmware supports clustering and the ID of the initiator.
|
|
*/
|
|
static int
|
|
megaraid_mbox_support_ha(adapter_t *adapter, uint16_t *init_id)
|
|
{
|
|
mbox_t *mbox;
|
|
uint8_t raw_mbox[sizeof(mbox_t)];
|
|
int rval;
|
|
|
|
|
|
mbox = (mbox_t *)raw_mbox;
|
|
|
|
memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox));
|
|
|
|
mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h;
|
|
|
|
memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE);
|
|
|
|
raw_mbox[0] = GET_TARGET_ID;
|
|
|
|
// Issue the command
|
|
*init_id = 7;
|
|
rval = -1;
|
|
if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) {
|
|
|
|
*init_id = *(uint8_t *)adapter->ibuf;
|
|
|
|
con_log(CL_ANN, (KERN_INFO
|
|
"megaraid: cluster firmware, initiator ID: %d\n",
|
|
*init_id));
|
|
|
|
rval = 0;
|
|
}
|
|
|
|
return rval;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_mbox_support_random_del - Do we support random deletion
|
|
* @adapter : soft state for the controller
|
|
*
|
|
* Determine if the firmware supports random deletion.
|
|
* Return: 1 is operation supported, 0 otherwise
|
|
*/
|
|
static int
|
|
megaraid_mbox_support_random_del(adapter_t *adapter)
|
|
{
|
|
mbox_t *mbox;
|
|
uint8_t raw_mbox[sizeof(mbox_t)];
|
|
int rval;
|
|
|
|
/*
|
|
* Newer firmware on Dell CERC expect a different
|
|
* random deletion handling, so disable it.
|
|
*/
|
|
if (adapter->pdev->vendor == PCI_VENDOR_ID_AMI &&
|
|
adapter->pdev->device == PCI_DEVICE_ID_AMI_MEGARAID3 &&
|
|
adapter->pdev->subsystem_vendor == PCI_VENDOR_ID_DELL &&
|
|
adapter->pdev->subsystem_device == PCI_SUBSYS_ID_CERC_ATA100_4CH &&
|
|
(adapter->fw_version[0] > '6' ||
|
|
(adapter->fw_version[0] == '6' &&
|
|
adapter->fw_version[2] > '6') ||
|
|
(adapter->fw_version[0] == '6'
|
|
&& adapter->fw_version[2] == '6'
|
|
&& adapter->fw_version[3] > '1'))) {
|
|
con_log(CL_DLEVEL1, ("megaraid: disable random deletion\n"));
|
|
return 0;
|
|
}
|
|
|
|
mbox = (mbox_t *)raw_mbox;
|
|
|
|
memset((caddr_t)raw_mbox, 0, sizeof(mbox_t));
|
|
|
|
raw_mbox[0] = FC_DEL_LOGDRV;
|
|
raw_mbox[2] = OP_SUP_DEL_LOGDRV;
|
|
|
|
// Issue the command
|
|
rval = 0;
|
|
if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) {
|
|
|
|
con_log(CL_DLEVEL1, ("megaraid: supports random deletion\n"));
|
|
|
|
rval = 1;
|
|
}
|
|
|
|
return rval;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_mbox_get_max_sg - maximum sg elements supported by the firmware
|
|
* @adapter : soft state for the controller
|
|
*
|
|
* Find out the maximum number of scatter-gather elements supported by the
|
|
* firmware.
|
|
*/
|
|
static int
|
|
megaraid_mbox_get_max_sg(adapter_t *adapter)
|
|
{
|
|
mbox_t *mbox;
|
|
uint8_t raw_mbox[sizeof(mbox_t)];
|
|
int nsg;
|
|
|
|
|
|
mbox = (mbox_t *)raw_mbox;
|
|
|
|
memset((caddr_t)raw_mbox, 0, sizeof(mbox_t));
|
|
|
|
mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h;
|
|
|
|
memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE);
|
|
|
|
raw_mbox[0] = MAIN_MISC_OPCODE;
|
|
raw_mbox[2] = GET_MAX_SG_SUPPORT;
|
|
|
|
// Issue the command
|
|
if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) {
|
|
nsg = *(uint8_t *)adapter->ibuf;
|
|
}
|
|
else {
|
|
nsg = MBOX_DEFAULT_SG_SIZE;
|
|
}
|
|
|
|
if (nsg > MBOX_MAX_SG_SIZE) nsg = MBOX_MAX_SG_SIZE;
|
|
|
|
return nsg;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_mbox_enum_raid_scsi - enumerate the RAID and SCSI channels
|
|
* @adapter : soft state for the controller
|
|
*
|
|
* Enumerate the RAID and SCSI channels for ROMB platforms so that channels
|
|
* can be exported as regular SCSI channels.
|
|
*/
|
|
static void
|
|
megaraid_mbox_enum_raid_scsi(adapter_t *adapter)
|
|
{
|
|
mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
|
|
mbox_t *mbox;
|
|
uint8_t raw_mbox[sizeof(mbox_t)];
|
|
|
|
|
|
mbox = (mbox_t *)raw_mbox;
|
|
|
|
memset((caddr_t)raw_mbox, 0, sizeof(mbox_t));
|
|
|
|
mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h;
|
|
|
|
memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE);
|
|
|
|
raw_mbox[0] = CHNL_CLASS;
|
|
raw_mbox[2] = GET_CHNL_CLASS;
|
|
|
|
// Issue the command. If the command fails, all channels are RAID
|
|
// channels
|
|
raid_dev->channel_class = 0xFF;
|
|
if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) {
|
|
raid_dev->channel_class = *(uint8_t *)adapter->ibuf;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_mbox_flush_cache - flush adapter and disks cache
|
|
* @adapter : soft state for the controller
|
|
*
|
|
* Flush adapter cache followed by disks cache.
|
|
*/
|
|
static void
|
|
megaraid_mbox_flush_cache(adapter_t *adapter)
|
|
{
|
|
mbox_t *mbox;
|
|
uint8_t raw_mbox[sizeof(mbox_t)];
|
|
|
|
|
|
mbox = (mbox_t *)raw_mbox;
|
|
|
|
memset((caddr_t)raw_mbox, 0, sizeof(mbox_t));
|
|
|
|
raw_mbox[0] = FLUSH_ADAPTER;
|
|
|
|
if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) {
|
|
con_log(CL_ANN, ("megaraid: flush adapter failed\n"));
|
|
}
|
|
|
|
raw_mbox[0] = FLUSH_SYSTEM;
|
|
|
|
if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) {
|
|
con_log(CL_ANN, ("megaraid: flush disks cache failed\n"));
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_mbox_fire_sync_cmd - fire the sync cmd
|
|
* @adapter : soft state for the controller
|
|
*
|
|
* Clears the pending cmds in FW and reinits its RAID structs.
|
|
*/
|
|
static int
|
|
megaraid_mbox_fire_sync_cmd(adapter_t *adapter)
|
|
{
|
|
mbox_t *mbox;
|
|
uint8_t raw_mbox[sizeof(mbox_t)];
|
|
mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
|
|
mbox64_t *mbox64;
|
|
int status = 0;
|
|
int i;
|
|
uint32_t dword;
|
|
|
|
mbox = (mbox_t *)raw_mbox;
|
|
|
|
memset((caddr_t)raw_mbox, 0, sizeof(mbox_t));
|
|
|
|
raw_mbox[0] = 0xFF;
|
|
|
|
mbox64 = raid_dev->mbox64;
|
|
mbox = raid_dev->mbox;
|
|
|
|
/* Wait until mailbox is free */
|
|
if (megaraid_busywait_mbox(raid_dev) != 0) {
|
|
status = 1;
|
|
goto blocked_mailbox;
|
|
}
|
|
|
|
/* Copy mailbox data into host structure */
|
|
memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 16);
|
|
mbox->cmdid = 0xFE;
|
|
mbox->busy = 1;
|
|
mbox->poll = 0;
|
|
mbox->ack = 0;
|
|
mbox->numstatus = 0;
|
|
mbox->status = 0;
|
|
|
|
wmb();
|
|
WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1);
|
|
|
|
/* Wait for maximum 1 min for status to post.
|
|
* If the Firmware SUPPORTS the ABOVE COMMAND,
|
|
* mbox->cmd will be set to 0
|
|
* else
|
|
* the firmware will reject the command with
|
|
* mbox->numstatus set to 1
|
|
*/
|
|
|
|
i = 0;
|
|
status = 0;
|
|
while (!mbox->numstatus && mbox->cmd == 0xFF) {
|
|
rmb();
|
|
msleep(1);
|
|
i++;
|
|
if (i > 1000 * 60) {
|
|
status = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (mbox->numstatus == 1)
|
|
status = 1; /*cmd not supported*/
|
|
|
|
/* Check for interrupt line */
|
|
dword = RDOUTDOOR(raid_dev);
|
|
WROUTDOOR(raid_dev, dword);
|
|
WRINDOOR(raid_dev,2);
|
|
|
|
return status;
|
|
|
|
blocked_mailbox:
|
|
con_log(CL_ANN, (KERN_WARNING "megaraid: blocked mailbox\n"));
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* megaraid_mbox_display_scb - display SCB information, mostly debug purposes
|
|
* @adapter : controller's soft state
|
|
* @scb : SCB to be displayed
|
|
* @level : debug level for console print
|
|
*
|
|
* Diplay information about the given SCB iff the current debug level is
|
|
* verbose.
|
|
*/
|
|
static void
|
|
megaraid_mbox_display_scb(adapter_t *adapter, scb_t *scb)
|
|
{
|
|
mbox_ccb_t *ccb;
|
|
struct scsi_cmnd *scp;
|
|
mbox_t *mbox;
|
|
int level;
|
|
int i;
|
|
|
|
|
|
ccb = (mbox_ccb_t *)scb->ccb;
|
|
scp = scb->scp;
|
|
mbox = ccb->mbox;
|
|
|
|
level = CL_DLEVEL3;
|
|
|
|
con_log(level, (KERN_NOTICE
|
|
"megaraid mailbox: status:%#x cmd:%#x id:%#x ", scb->status,
|
|
mbox->cmd, scb->sno));
|
|
|
|
con_log(level, ("sec:%#x lba:%#x addr:%#x ld:%d sg:%d\n",
|
|
mbox->numsectors, mbox->lba, mbox->xferaddr, mbox->logdrv,
|
|
mbox->numsge));
|
|
|
|
if (!scp) return;
|
|
|
|
con_log(level, (KERN_NOTICE "scsi cmnd: "));
|
|
|
|
for (i = 0; i < scp->cmd_len; i++) {
|
|
con_log(level, ("%#2.02x ", scp->cmnd[i]));
|
|
}
|
|
|
|
con_log(level, ("\n"));
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_mbox_setup_device_map - manage device ids
|
|
* @adapter : Driver's soft state
|
|
*
|
|
* Manage the device ids to have an appropriate mapping between the kernel
|
|
* scsi addresses and megaraid scsi and logical drive addresses. We export
|
|
* scsi devices on their actual addresses, whereas the logical drives are
|
|
* exported on a virtual scsi channel.
|
|
*/
|
|
static void
|
|
megaraid_mbox_setup_device_map(adapter_t *adapter)
|
|
{
|
|
uint8_t c;
|
|
uint8_t t;
|
|
|
|
/*
|
|
* First fill the values on the logical drive channel
|
|
*/
|
|
for (t = 0; t < LSI_MAX_LOGICAL_DRIVES_64LD; t++)
|
|
adapter->device_ids[adapter->max_channel][t] =
|
|
(t < adapter->init_id) ? t : t - 1;
|
|
|
|
adapter->device_ids[adapter->max_channel][adapter->init_id] = 0xFF;
|
|
|
|
/*
|
|
* Fill the values on the physical devices channels
|
|
*/
|
|
for (c = 0; c < adapter->max_channel; c++)
|
|
for (t = 0; t < LSI_MAX_LOGICAL_DRIVES_64LD; t++)
|
|
adapter->device_ids[c][t] = (c << 8) | t;
|
|
}
|
|
|
|
|
|
/*
|
|
* END: internal commands library
|
|
*/
|
|
|
|
/*
|
|
* START: Interface for the common management module
|
|
*
|
|
* This is the module, which interfaces with the common management module to
|
|
* provide support for ioctl and sysfs
|
|
*/
|
|
|
|
/**
|
|
* megaraid_cmm_register - register with the management module
|
|
* @adapter : HBA soft state
|
|
*
|
|
* Register with the management module, which allows applications to issue
|
|
* ioctl calls to the drivers. This interface is used by the management module
|
|
* to setup sysfs support as well.
|
|
*/
|
|
static int
|
|
megaraid_cmm_register(adapter_t *adapter)
|
|
{
|
|
mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
|
|
mraid_mmadp_t adp;
|
|
scb_t *scb;
|
|
mbox_ccb_t *ccb;
|
|
int rval;
|
|
int i;
|
|
|
|
// Allocate memory for the base list of scb for management module.
|
|
adapter->uscb_list = kcalloc(MBOX_MAX_USER_CMDS, sizeof(scb_t), GFP_KERNEL);
|
|
|
|
if (adapter->uscb_list == NULL) {
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: out of memory, %s %d\n", __func__,
|
|
__LINE__));
|
|
return -1;
|
|
}
|
|
|
|
|
|
// Initialize the synchronization parameters for resources for
|
|
// commands for management module
|
|
INIT_LIST_HEAD(&adapter->uscb_pool);
|
|
|
|
spin_lock_init(USER_FREE_LIST_LOCK(adapter));
|
|
|
|
|
|
|
|
// link all the packets. Note, CCB for commands, coming from the
|
|
// commom management module, mailbox physical address are already
|
|
// setup by it. We just need placeholder for that in our local command
|
|
// control blocks
|
|
for (i = 0; i < MBOX_MAX_USER_CMDS; i++) {
|
|
|
|
scb = adapter->uscb_list + i;
|
|
ccb = raid_dev->uccb_list + i;
|
|
|
|
scb->ccb = (caddr_t)ccb;
|
|
ccb->mbox64 = raid_dev->umbox64 + i;
|
|
ccb->mbox = &ccb->mbox64->mbox32;
|
|
ccb->raw_mbox = (uint8_t *)ccb->mbox;
|
|
|
|
scb->gp = 0;
|
|
|
|
// COMMAND ID 0 - (MBOX_MAX_SCSI_CMDS-1) ARE RESERVED FOR
|
|
// COMMANDS COMING FROM IO SUBSYSTEM (MID-LAYER)
|
|
scb->sno = i + MBOX_MAX_SCSI_CMDS;
|
|
|
|
scb->scp = NULL;
|
|
scb->state = SCB_FREE;
|
|
scb->dma_direction = PCI_DMA_NONE;
|
|
scb->dma_type = MRAID_DMA_NONE;
|
|
scb->dev_channel = -1;
|
|
scb->dev_target = -1;
|
|
|
|
// put scb in the free pool
|
|
list_add_tail(&scb->list, &adapter->uscb_pool);
|
|
}
|
|
|
|
adp.unique_id = adapter->unique_id;
|
|
adp.drvr_type = DRVRTYPE_MBOX;
|
|
adp.drvr_data = (unsigned long)adapter;
|
|
adp.pdev = adapter->pdev;
|
|
adp.issue_uioc = megaraid_mbox_mm_handler;
|
|
adp.timeout = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT;
|
|
adp.max_kioc = MBOX_MAX_USER_CMDS;
|
|
|
|
if ((rval = mraid_mm_register_adp(&adp)) != 0) {
|
|
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid mbox: did not register with CMM\n"));
|
|
|
|
kfree(adapter->uscb_list);
|
|
}
|
|
|
|
return rval;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_cmm_unregister - un-register with the management module
|
|
* @adapter : HBA soft state
|
|
*
|
|
* Un-register with the management module.
|
|
* FIXME: mgmt module must return failure for unregister if it has pending
|
|
* commands in LLD.
|
|
*/
|
|
static int
|
|
megaraid_cmm_unregister(adapter_t *adapter)
|
|
{
|
|
kfree(adapter->uscb_list);
|
|
mraid_mm_unregister_adp(adapter->unique_id);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_mbox_mm_handler - interface for CMM to issue commands to LLD
|
|
* @drvr_data : LLD specific data
|
|
* @kioc : CMM interface packet
|
|
* @action : command action
|
|
*
|
|
* This routine is invoked whenever the Common Management Module (CMM) has a
|
|
* command for us. The 'action' parameter specifies if this is a new command
|
|
* or otherwise.
|
|
*/
|
|
static int
|
|
megaraid_mbox_mm_handler(unsigned long drvr_data, uioc_t *kioc, uint32_t action)
|
|
{
|
|
adapter_t *adapter;
|
|
|
|
if (action != IOCTL_ISSUE) {
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: unsupported management action:%#2x\n",
|
|
action));
|
|
return (-ENOTSUPP);
|
|
}
|
|
|
|
adapter = (adapter_t *)drvr_data;
|
|
|
|
// make sure this adapter is not being detached right now.
|
|
if (atomic_read(&adapter->being_detached)) {
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: reject management request, detaching\n"));
|
|
return (-ENODEV);
|
|
}
|
|
|
|
switch (kioc->opcode) {
|
|
|
|
case GET_ADAP_INFO:
|
|
|
|
kioc->status = gather_hbainfo(adapter, (mraid_hba_info_t *)
|
|
(unsigned long)kioc->buf_vaddr);
|
|
|
|
kioc->done(kioc);
|
|
|
|
return kioc->status;
|
|
|
|
case MBOX_CMD:
|
|
|
|
return megaraid_mbox_mm_command(adapter, kioc);
|
|
|
|
default:
|
|
kioc->status = (-EINVAL);
|
|
kioc->done(kioc);
|
|
return (-EINVAL);
|
|
}
|
|
|
|
return 0; // not reached
|
|
}
|
|
|
|
/**
|
|
* megaraid_mbox_mm_command - issues commands routed through CMM
|
|
* @adapter : HBA soft state
|
|
* @kioc : management command packet
|
|
*
|
|
* Issues commands, which are routed through the management module.
|
|
*/
|
|
static int
|
|
megaraid_mbox_mm_command(adapter_t *adapter, uioc_t *kioc)
|
|
{
|
|
struct list_head *head = &adapter->uscb_pool;
|
|
mbox64_t *mbox64;
|
|
uint8_t *raw_mbox;
|
|
scb_t *scb;
|
|
mbox_ccb_t *ccb;
|
|
unsigned long flags;
|
|
|
|
// detach one scb from free pool
|
|
spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter), flags);
|
|
|
|
if (list_empty(head)) { // should never happen because of CMM
|
|
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid mbox: bug in cmm handler, lost resources\n"));
|
|
|
|
spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags);
|
|
|
|
return (-EINVAL);
|
|
}
|
|
|
|
scb = list_entry(head->next, scb_t, list);
|
|
list_del_init(&scb->list);
|
|
|
|
spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags);
|
|
|
|
scb->state = SCB_ACTIVE;
|
|
scb->dma_type = MRAID_DMA_NONE;
|
|
scb->dma_direction = PCI_DMA_NONE;
|
|
|
|
ccb = (mbox_ccb_t *)scb->ccb;
|
|
mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf;
|
|
raw_mbox = (uint8_t *)&mbox64->mbox32;
|
|
|
|
memcpy(ccb->mbox64, mbox64, sizeof(mbox64_t));
|
|
|
|
scb->gp = (unsigned long)kioc;
|
|
|
|
/*
|
|
* If it is a logdrv random delete operation, we have to wait till
|
|
* there are no outstanding cmds at the fw and then issue it directly
|
|
*/
|
|
if (raw_mbox[0] == FC_DEL_LOGDRV && raw_mbox[2] == OP_DEL_LOGDRV) {
|
|
|
|
if (wait_till_fw_empty(adapter)) {
|
|
con_log(CL_ANN, (KERN_NOTICE
|
|
"megaraid mbox: LD delete, timed out\n"));
|
|
|
|
kioc->status = -ETIME;
|
|
|
|
scb->status = -1;
|
|
|
|
megaraid_mbox_mm_done(adapter, scb);
|
|
|
|
return (-ETIME);
|
|
}
|
|
|
|
INIT_LIST_HEAD(&scb->list);
|
|
|
|
scb->state = SCB_ISSUED;
|
|
if (mbox_post_cmd(adapter, scb) != 0) {
|
|
|
|
con_log(CL_ANN, (KERN_NOTICE
|
|
"megaraid mbox: LD delete, mailbox busy\n"));
|
|
|
|
kioc->status = -EBUSY;
|
|
|
|
scb->status = -1;
|
|
|
|
megaraid_mbox_mm_done(adapter, scb);
|
|
|
|
return (-EBUSY);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
// put the command on the pending list and execute
|
|
megaraid_mbox_runpendq(adapter, scb);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int
|
|
wait_till_fw_empty(adapter_t *adapter)
|
|
{
|
|
unsigned long flags = 0;
|
|
int i;
|
|
|
|
|
|
/*
|
|
* Set the quiescent flag to stop issuing cmds to FW.
|
|
*/
|
|
spin_lock_irqsave(&adapter->lock, flags);
|
|
adapter->quiescent++;
|
|
spin_unlock_irqrestore(&adapter->lock, flags);
|
|
|
|
/*
|
|
* Wait till there are no more cmds outstanding at FW. Try for at most
|
|
* 60 seconds
|
|
*/
|
|
for (i = 0; i < 60 && adapter->outstanding_cmds; i++) {
|
|
con_log(CL_DLEVEL1, (KERN_INFO
|
|
"megaraid: FW has %d pending commands\n",
|
|
adapter->outstanding_cmds));
|
|
|
|
msleep(1000);
|
|
}
|
|
|
|
return adapter->outstanding_cmds;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_mbox_mm_done - callback for CMM commands
|
|
* @adapter : HBA soft state
|
|
* @scb : completed command
|
|
*
|
|
* Callback routine for internal commands originated from the management
|
|
* module.
|
|
*/
|
|
static void
|
|
megaraid_mbox_mm_done(adapter_t *adapter, scb_t *scb)
|
|
{
|
|
uioc_t *kioc;
|
|
mbox64_t *mbox64;
|
|
uint8_t *raw_mbox;
|
|
unsigned long flags;
|
|
|
|
kioc = (uioc_t *)scb->gp;
|
|
mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf;
|
|
mbox64->mbox32.status = scb->status;
|
|
raw_mbox = (uint8_t *)&mbox64->mbox32;
|
|
|
|
|
|
// put scb in the free pool
|
|
scb->state = SCB_FREE;
|
|
scb->scp = NULL;
|
|
|
|
spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter), flags);
|
|
|
|
list_add(&scb->list, &adapter->uscb_pool);
|
|
|
|
spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags);
|
|
|
|
// if a delete logical drive operation succeeded, restart the
|
|
// controller
|
|
if (raw_mbox[0] == FC_DEL_LOGDRV && raw_mbox[2] == OP_DEL_LOGDRV) {
|
|
|
|
adapter->quiescent--;
|
|
|
|
megaraid_mbox_runpendq(adapter, NULL);
|
|
}
|
|
|
|
kioc->done(kioc);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/**
|
|
* gather_hbainfo - HBA characteristics for the applications
|
|
* @adapter : HBA soft state
|
|
* @hinfo : pointer to the caller's host info strucuture
|
|
*/
|
|
static int
|
|
gather_hbainfo(adapter_t *adapter, mraid_hba_info_t *hinfo)
|
|
{
|
|
uint8_t dmajor;
|
|
|
|
dmajor = megaraid_mbox_version[0];
|
|
|
|
hinfo->pci_vendor_id = adapter->pdev->vendor;
|
|
hinfo->pci_device_id = adapter->pdev->device;
|
|
hinfo->subsys_vendor_id = adapter->pdev->subsystem_vendor;
|
|
hinfo->subsys_device_id = adapter->pdev->subsystem_device;
|
|
|
|
hinfo->pci_bus = adapter->pdev->bus->number;
|
|
hinfo->pci_dev_fn = adapter->pdev->devfn;
|
|
hinfo->pci_slot = PCI_SLOT(adapter->pdev->devfn);
|
|
hinfo->irq = adapter->host->irq;
|
|
hinfo->baseport = ADAP2RAIDDEV(adapter)->baseport;
|
|
|
|
hinfo->unique_id = (hinfo->pci_bus << 8) | adapter->pdev->devfn;
|
|
hinfo->host_no = adapter->host->host_no;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* END: Interface for the common management module
|
|
*/
|
|
|
|
|
|
|
|
/**
|
|
* megaraid_sysfs_alloc_resources - allocate sysfs related resources
|
|
* @adapter : controller's soft state
|
|
*
|
|
* Allocate packets required to issue FW calls whenever the sysfs attributes
|
|
* are read. These attributes would require up-to-date information from the
|
|
* FW. Also set up resources for mutual exclusion to share these resources and
|
|
* the wait queue.
|
|
*
|
|
* Return 0 on success.
|
|
* Return -ERROR_CODE on failure.
|
|
*/
|
|
static int
|
|
megaraid_sysfs_alloc_resources(adapter_t *adapter)
|
|
{
|
|
mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
|
|
int rval = 0;
|
|
|
|
raid_dev->sysfs_uioc = kmalloc(sizeof(uioc_t), GFP_KERNEL);
|
|
|
|
raid_dev->sysfs_mbox64 = kmalloc(sizeof(mbox64_t), GFP_KERNEL);
|
|
|
|
raid_dev->sysfs_buffer = pci_alloc_consistent(adapter->pdev,
|
|
PAGE_SIZE, &raid_dev->sysfs_buffer_dma);
|
|
|
|
if (!raid_dev->sysfs_uioc || !raid_dev->sysfs_mbox64 ||
|
|
!raid_dev->sysfs_buffer) {
|
|
|
|
con_log(CL_ANN, (KERN_WARNING
|
|
"megaraid: out of memory, %s %d\n", __func__,
|
|
__LINE__));
|
|
|
|
rval = -ENOMEM;
|
|
|
|
megaraid_sysfs_free_resources(adapter);
|
|
}
|
|
|
|
mutex_init(&raid_dev->sysfs_mtx);
|
|
|
|
init_waitqueue_head(&raid_dev->sysfs_wait_q);
|
|
|
|
return rval;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_sysfs_free_resources - free sysfs related resources
|
|
* @adapter : controller's soft state
|
|
*
|
|
* Free packets allocated for sysfs FW commands
|
|
*/
|
|
static void
|
|
megaraid_sysfs_free_resources(adapter_t *adapter)
|
|
{
|
|
mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
|
|
|
|
kfree(raid_dev->sysfs_uioc);
|
|
kfree(raid_dev->sysfs_mbox64);
|
|
|
|
if (raid_dev->sysfs_buffer) {
|
|
pci_free_consistent(adapter->pdev, PAGE_SIZE,
|
|
raid_dev->sysfs_buffer, raid_dev->sysfs_buffer_dma);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_sysfs_get_ldmap_done - callback for get ldmap
|
|
* @uioc : completed packet
|
|
*
|
|
* Callback routine called in the ISR/tasklet context for get ldmap call
|
|
*/
|
|
static void
|
|
megaraid_sysfs_get_ldmap_done(uioc_t *uioc)
|
|
{
|
|
adapter_t *adapter = (adapter_t *)uioc->buf_vaddr;
|
|
mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
|
|
|
|
uioc->status = 0;
|
|
|
|
wake_up(&raid_dev->sysfs_wait_q);
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_sysfs_get_ldmap_timeout - timeout handling for get ldmap
|
|
* @data : timed out packet
|
|
*
|
|
* Timeout routine to recover and return to application, in case the adapter
|
|
* has stopped responding. A timeout of 60 seconds for this command seems like
|
|
* a good value.
|
|
*/
|
|
static void
|
|
megaraid_sysfs_get_ldmap_timeout(unsigned long data)
|
|
{
|
|
uioc_t *uioc = (uioc_t *)data;
|
|
adapter_t *adapter = (adapter_t *)uioc->buf_vaddr;
|
|
mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
|
|
|
|
uioc->status = -ETIME;
|
|
|
|
wake_up(&raid_dev->sysfs_wait_q);
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_sysfs_get_ldmap - get update logical drive map
|
|
* @adapter : controller's soft state
|
|
*
|
|
* This routine will be called whenever user reads the logical drive
|
|
* attributes, go get the current logical drive mapping table from the
|
|
* firmware. We use the management API's to issue commands to the controller.
|
|
*
|
|
* NOTE: The commands issuance functionality is not generalized and
|
|
* implemented in context of "get ld map" command only. If required, the
|
|
* command issuance logical can be trivially pulled out and implemented as a
|
|
* standalone library. For now, this should suffice since there is no other
|
|
* user of this interface.
|
|
*
|
|
* Return 0 on success.
|
|
* Return -1 on failure.
|
|
*/
|
|
static int
|
|
megaraid_sysfs_get_ldmap(adapter_t *adapter)
|
|
{
|
|
mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
|
|
uioc_t *uioc;
|
|
mbox64_t *mbox64;
|
|
mbox_t *mbox;
|
|
char *raw_mbox;
|
|
struct timer_list sysfs_timer;
|
|
struct timer_list *timerp;
|
|
caddr_t ldmap;
|
|
int rval = 0;
|
|
|
|
/*
|
|
* Allow only one read at a time to go through the sysfs attributes
|
|
*/
|
|
mutex_lock(&raid_dev->sysfs_mtx);
|
|
|
|
uioc = raid_dev->sysfs_uioc;
|
|
mbox64 = raid_dev->sysfs_mbox64;
|
|
ldmap = raid_dev->sysfs_buffer;
|
|
|
|
memset(uioc, 0, sizeof(uioc_t));
|
|
memset(mbox64, 0, sizeof(mbox64_t));
|
|
memset(ldmap, 0, sizeof(raid_dev->curr_ldmap));
|
|
|
|
mbox = &mbox64->mbox32;
|
|
raw_mbox = (char *)mbox;
|
|
uioc->cmdbuf = (uint64_t)(unsigned long)mbox64;
|
|
uioc->buf_vaddr = (caddr_t)adapter;
|
|
uioc->status = -ENODATA;
|
|
uioc->done = megaraid_sysfs_get_ldmap_done;
|
|
|
|
/*
|
|
* Prepare the mailbox packet to get the current logical drive mapping
|
|
* table
|
|
*/
|
|
mbox->xferaddr = (uint32_t)raid_dev->sysfs_buffer_dma;
|
|
|
|
raw_mbox[0] = FC_DEL_LOGDRV;
|
|
raw_mbox[2] = OP_GET_LDID_MAP;
|
|
|
|
/*
|
|
* Setup a timer to recover from a non-responding controller
|
|
*/
|
|
timerp = &sysfs_timer;
|
|
init_timer(timerp);
|
|
|
|
timerp->function = megaraid_sysfs_get_ldmap_timeout;
|
|
timerp->data = (unsigned long)uioc;
|
|
timerp->expires = jiffies + 60 * HZ;
|
|
|
|
add_timer(timerp);
|
|
|
|
/*
|
|
* Send the command to the firmware
|
|
*/
|
|
rval = megaraid_mbox_mm_command(adapter, uioc);
|
|
|
|
if (rval == 0) { // command successfully issued
|
|
wait_event(raid_dev->sysfs_wait_q, (uioc->status != -ENODATA));
|
|
|
|
/*
|
|
* Check if the command timed out
|
|
*/
|
|
if (uioc->status == -ETIME) {
|
|
con_log(CL_ANN, (KERN_NOTICE
|
|
"megaraid: sysfs get ld map timed out\n"));
|
|
|
|
rval = -ETIME;
|
|
}
|
|
else {
|
|
rval = mbox->status;
|
|
}
|
|
|
|
if (rval == 0) {
|
|
memcpy(raid_dev->curr_ldmap, ldmap,
|
|
sizeof(raid_dev->curr_ldmap));
|
|
}
|
|
else {
|
|
con_log(CL_ANN, (KERN_NOTICE
|
|
"megaraid: get ld map failed with %x\n", rval));
|
|
}
|
|
}
|
|
else {
|
|
con_log(CL_ANN, (KERN_NOTICE
|
|
"megaraid: could not issue ldmap command:%x\n", rval));
|
|
}
|
|
|
|
|
|
del_timer_sync(timerp);
|
|
|
|
mutex_unlock(&raid_dev->sysfs_mtx);
|
|
|
|
return rval;
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_sysfs_show_app_hndl - display application handle for this adapter
|
|
* @cdev : class device object representation for the host
|
|
* @buf : buffer to send data to
|
|
*
|
|
* Display the handle used by the applications while executing management
|
|
* tasks on the adapter. We invoke a management module API to get the adapter
|
|
* handle, since we do not interface with applications directly.
|
|
*/
|
|
static ssize_t
|
|
megaraid_sysfs_show_app_hndl(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct Scsi_Host *shost = class_to_shost(dev);
|
|
adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(shost);
|
|
uint32_t app_hndl;
|
|
|
|
app_hndl = mraid_mm_adapter_app_handle(adapter->unique_id);
|
|
|
|
return snprintf(buf, 8, "%u\n", app_hndl);
|
|
}
|
|
|
|
|
|
/**
|
|
* megaraid_sysfs_show_ldnum - display the logical drive number for this device
|
|
* @dev : device object representation for the scsi device
|
|
* @attr : device attribute to show
|
|
* @buf : buffer to send data to
|
|
*
|
|
* Display the logical drive number for the device in question, if it a valid
|
|
* logical drive. For physical devices, "-1" is returned.
|
|
*
|
|
* The logical drive number is displayed in following format:
|
|
*
|
|
* <SCSI ID> <LD NUM> <LD STICKY ID> <APP ADAPTER HANDLE>
|
|
*
|
|
* <int> <int> <int> <int>
|
|
*/
|
|
static ssize_t
|
|
megaraid_sysfs_show_ldnum(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct scsi_device *sdev = to_scsi_device(dev);
|
|
adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(sdev->host);
|
|
mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
|
|
int scsi_id = -1;
|
|
int logical_drv = -1;
|
|
int ldid_map = -1;
|
|
uint32_t app_hndl = 0;
|
|
int mapped_sdev_id;
|
|
int rval;
|
|
int i;
|
|
|
|
if (raid_dev->random_del_supported &&
|
|
MRAID_IS_LOGICAL_SDEV(adapter, sdev)) {
|
|
|
|
rval = megaraid_sysfs_get_ldmap(adapter);
|
|
if (rval == 0) {
|
|
|
|
for (i = 0; i < MAX_LOGICAL_DRIVES_40LD; i++) {
|
|
|
|
mapped_sdev_id = sdev->id;
|
|
|
|
if (sdev->id > adapter->init_id) {
|
|
mapped_sdev_id -= 1;
|
|
}
|
|
|
|
if (raid_dev->curr_ldmap[i] == mapped_sdev_id) {
|
|
|
|
scsi_id = sdev->id;
|
|
|
|
logical_drv = i;
|
|
|
|
ldid_map = raid_dev->curr_ldmap[i];
|
|
|
|
app_hndl = mraid_mm_adapter_app_handle(
|
|
adapter->unique_id);
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
con_log(CL_ANN, (KERN_NOTICE
|
|
"megaraid: sysfs get ld map failed: %x\n",
|
|
rval));
|
|
}
|
|
}
|
|
|
|
return snprintf(buf, 36, "%d %d %d %d\n", scsi_id, logical_drv,
|
|
ldid_map, app_hndl);
|
|
}
|
|
|
|
|
|
/*
|
|
* END: Mailbox Low Level Driver
|
|
*/
|
|
module_init(megaraid_init);
|
|
module_exit(megaraid_exit);
|
|
|
|
/* vim: set ts=8 sw=8 tw=78 ai si: */
|