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freebsd-dev/sys/dev/mly/mlyreg.h
Pedro F. Giffuni 718cf2ccb9 sys/dev: further adoption of SPDX licensing ID tags. 
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 14:52:40 +00:00

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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2000 Michael Smith
* Copyright (c) 2000 BSDi
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* Section numbers in this document refer to the Mylex "Firmware Software Interface"
* document ('FSI'), revision 0.11 04/11/00 unless otherwise qualified.
*
* Reference is made to the Mylex "Programming Guide for 6.x Controllers" document
* ('PG6'), document #771242 revision 0.02, 04/11/00
*
* Note that fields marked N/A are not supported by the PCI controllers, but are
* defined here to hold place in datastructures that are shared with the SCSI
* controllers. Items not relevant to PCI controllers are not described here.
*
* Ordering of items in this file is a little odd due to the constraints of
* nested declarations.
*/
/*
* 2.1 (Scatter Gather List Format)
*/
struct mly_sg_entry {
u_int64_t physaddr;
u_int64_t length;
} __packed;
/*
* 5.2 System Device Access
*
* This is corroborated by the layout of the MDACIOCTL_GETCONTROLLERINFO data
* in 21.8
*/
#define MLY_MAX_CHANNELS 6
#define MLY_MAX_TARGETS 16
#define MLY_MAX_LUNS 1
/*
* 8.1 Different Device States
*/
#define MLY_DEVICE_STATE_OFFLINE 0x08 /* DEAD/OFFLINE */
#define MLY_DEVICE_STATE_UNCONFIGURED 0x00
#define MLY_DEVICE_STATE_ONLINE 0x01
#define MLY_DEVICE_STATE_CRITICAL 0x09
#define MLY_DEVICE_STATE_WRITEONLY 0x03
#define MLY_DEVICE_STATE_STANDBY 0x21
#define MLY_DEVICE_STATE_MISSING 0x04 /* or-ed with (ONLINE or WRITEONLY or STANDBY) */
/*
* 8.2 Device Type Field definitions
*/
#define MLY_DEVICE_TYPE_RAID0 0x0 /* RAID 0 */
#define MLY_DEVICE_TYPE_RAID1 0x1 /* RAID 1 */
#define MLY_DEVICE_TYPE_RAID3 0x3 /* RAID 3 right asymmetric parity */
#define MLY_DEVICE_TYPE_RAID5 0x5 /* RAID 5 right asymmetric parity */
#define MLY_DEVICE_TYPE_RAID6 0x6 /* RAID 6 (Mylex RAID 6) */
#define MLY_DEVICE_TYPE_RAID7 0x7 /* RAID 7 (JBOD) */
#define MLY_DEVICE_TYPE_NEWSPAN 0x8 /* New Mylex SPAN */
#define MLY_DEVICE_TYPE_RAID3F 0x9 /* RAID 3 fixed parity */
#define MLY_DEVICE_TYPE_RAID3L 0xb /* RAID 3 left symmetric parity */
#define MLY_DEVICE_TYPE_SPAN 0xc /* current spanning implementation */
#define MLY_DEVICE_TYPE_RAID5L 0xd /* RAID 5 left symmetric parity */
#define MLY_DEVICE_TYPE_RAIDE 0xe /* RAID E (concatenation) */
#define MLY_DEVICE_TYPE_PHYSICAL 0xf /* physical device */
/*
* 8.3 Stripe Size
*/
#define MLY_STRIPE_ZERO 0x0 /* no stripe (RAID 1, RAID 7, etc) */
#define MLY_STRIPE_512b 0x1
#define MLY_STRIPE_1k 0x2
#define MLY_STRIPE_2k 0x3
#define MLY_STRIPE_4k 0x4
#define MLY_STRIPE_8k 0x5
#define MLY_STRIPE_16k 0x6
#define MLY_STRIPE_32k 0x7
#define MLY_STRIPE_64k 0x8
#define MLY_STRIPE_128k 0x9
#define MLY_STRIPE_256k 0xa
#define MLY_STRIPE_512k 0xb
#define MLY_STRIPE_1m 0xc
/*
* 8.4 Cacheline Size
*/
#define MLY_CACHELINE_ZERO 0x0 /* caching cannot be enabled */
#define MLY_CACHELINE_512b 0x1
#define MLY_CACHELINE_1k 0x2
#define MLY_CACHELINE_2k 0x3
#define MLY_CACHELINE_4k 0x4
#define MLY_CACHELINE_8k 0x5
#define MLY_CACHELINE_16k 0x6
#define MLY_CACHELINE_32k 0x7
#define MLY_CACHELINE_64k 0x8
/*
* 8.5 Read/Write control
*/
#define MLY_RWCtl_INITTED (1<<7) /* if set, the logical device is initialised */
/* write control */
#define MLY_RWCtl_WCD (0) /* write cache disabled */
#define MLY_RWCtl_WDISABLE (1<<3) /* writing disabled */
#define MLY_RWCtl_WCE (2<<3) /* write cache enabled */
#define MLY_RWCtl_IWCE (3<<3) /* intelligent write cache enabled */
/* read control */
#define MLY_RWCtl_RCD (0) /* read cache is disabled */
#define MLY_RWCtl_RCE (1) /* read cache enabled */
#define MLY_RWCtl_RAHEAD (2) /* readahead enabled */
#define MLY_RWCtl_IRAHEAD (3) /* intelligent readahead enabled */
/*
* 9.0 LUN Map Format
*/
struct mly_lun_map {
u_int8_t res1:4;
u_int8_t host_port_mapped:1; /* this system drive visible to host on this controller/port combination */
u_int8_t tid_valid:1; /* target ID valid */
u_int8_t hid_valid:1; /* host ID valid */
u_int8_t lun_valid:1; /* LUN valid */
u_int8_t res2;
u_int8_t lun; /* LUN */
u_int8_t tid; /* TID */
u_int8_t hid[32]; /* HID (one bit for each host) */
} __packed;
/*
* 10.1 Controller Parameters
*/
struct mly_param_controller {
u_int8_t rdahen:1; /* N/A */
u_int8_t bilodly:1; /* N/A */
u_int8_t fua_disable:1;
u_int8_t reass1s:1; /* N/A */
u_int8_t truvrfy:1; /* N/A */
u_int8_t dwtvrfy:1; /* N/A */
u_int8_t background_initialisation:1;
u_int8_t clustering:1; /* N/A */
u_int8_t bios_disable:1;
u_int8_t boot_from_cdrom:1;
u_int8_t drive_coercion:1;
u_int8_t write_same_disable:1;
u_int8_t hba_mode:1; /* N/A */
u_int8_t bios_geometry:2;
#define MLY_BIOSGEOM_2G 0x0
#define MLY_BIOSGEOM_8G 0x1
u_int8_t res1:1; /* N/A */
u_int8_t res2[2]; /* N/A */
u_int8_t v_dec:1;
u_int8_t safte:1; /* N/A */
u_int8_t ses:1; /* N/A */
u_int8_t res3:2; /* N/A */
u_int8_t v_arm:1;
u_int8_t v_ofm:1;
u_int8_t res4:1; /* N/A */
u_int8_t rebuild_check_rate;
u_int8_t cache_line_size; /* see 8.4 */
u_int8_t oem_code;
#define MLY_OEM_MYLEX 0x00
#define MLY_OEM_IBM 0x08
#define MLY_OEM_HP 0x0a
#define MLY_OEM_DEC 0x0c
#define MLY_OEM_SIEMENS 0x10
#define MLY_OEM_INTEL 0x12
u_int8_t spinup_mode;
#define MLY_SPIN_AUTO 0
#define MLY_SPIN_PWRSPIN 1
#define MLY_SPIN_WSSUSPIN 2
u_int8_t spinup_devices;
u_int8_t spinup_interval;
u_int8_t spinup_wait_time;
u_int8_t res5:3; /* N/A */
u_int8_t vutursns:1; /* N/A */
u_int8_t dccfil:1; /* N/A */
u_int8_t nopause:1; /* N/A */
u_int8_t disqfull:1; /* N/A */
u_int8_t disbusy:1; /* N/A */
u_int8_t res6:2; /* N/A */
u_int8_t failover_node_name; /* N/A */
u_int8_t res7:1; /* N/A */
u_int8_t ftopo:3; /* N/A */
u_int8_t disable_ups:1; /* N/A */
u_int8_t res8:1; /* N/A */
u_int8_t propagate_reset:1; /* N/A */
u_int8_t nonstd_mp_reset:1; /* N/A */
u_int8_t res9:5; /* N/A */
u_int8_t res10; /* N/A */
u_int8_t serial_port_baud_rate; /* N/A */
u_int8_t serial_port_control; /* N/A */
u_int8_t change_stripe_ok_developer_flag_only; /* N/A */
u_int8_t small_large_host_transfers:2; /* N/A */
u_int8_t frame_control:2; /* N/A */
u_int8_t pci_latency_control:2; /* N/A */
u_int8_t treat_lip_as_reset:1; /* N/A */
u_int8_t res11:1; /* N/A */
u_int8_t ms_autorest:1; /* N/A */
u_int8_t res12:7; /* N/A */
u_int8_t ms_aa_fsim:1; /* N/A */
u_int8_t ms_aa_ccach:1; /* N/A */
u_int8_t ms_aa_fault_signals:1; /* N/A */
u_int8_t ms_aa_c4_faults:1; /* N/A */
u_int8_t ms_aa_host_reset_delay_mask:4; /* N/A */
u_int8_t ms_flg_simplex_no_rstcom:1; /* N/A */
u_int8_t res13:7; /* N/A */
u_int8_t res14; /* N/A */
u_int8_t hardloopid[2][2]; /* N/A */
u_int8_t ctrlname[2][16+1]; /* N/A */
u_int8_t initiator_id;
u_int8_t startup_option;
#define MLY_STARTUP_IF_NO_CHANGE 0x0
#define MLY_STARTUP_IF_NO_LUN_CHANGE 0x1
#define MLY_STARTUP_IF_NO_LUN_OFFLINE 0x2
#define MLY_STARTUP_IF_LUN0_NO_CHANGE 0x3
#define MLY_STARTUP_IF_LUN0_NOT_OFFLINE 0x4
#define MLY_STARTUP_ALWAYS 0x5
u_int8_t res15[62];
} __packed;
/*
* 10.2 Physical Device Parameters
*/
struct mly_param_physical_device {
u_int16_t tags;
u_int16_t speed;
u_int8_t width;
u_int8_t combing:1;
u_int8_t res1:7;
u_int8_t res2[3];
} __packed;
/*
* 10.3 Logical Device Parameters
*/
struct mly_param_logical_device {
u_int8_t type; /* see 8.2 */
u_int8_t state; /* see 8.1 */
u_int16_t raid_device;
u_int8_t res1;
u_int8_t bios_geometry; /* BIOS control word? */
u_int8_t stripe_size; /* see 8.3 */
u_int8_t read_write_control; /* see 8.5 */
u_int8_t res2[8];
} __packed;
/*
* 12.3 Health Status Buffer
*
* Pad to 128 bytes.
*/
struct mly_health_status {
u_int32_t uptime_us; /* N/A */
u_int32_t uptime_ms; /* N/A */
u_int32_t realtime; /* N/A */
u_int32_t res1; /* N/A */
u_int32_t change_counter;
u_int32_t res2; /* N/A */
u_int32_t debug_message_index; /* N/A */
u_int32_t bios_message_index; /* N/A */
u_int32_t trace_page; /* N/A */
u_int32_t profiler_page; /* N/A */
u_int32_t next_event;
u_int8_t res3[4 + 16 + 64]; /* N/A */
} __packed;
/*
* 14.2 Timeout Bit Format
*/
struct mly_timeout {
u_int8_t value:6;
u_int8_t scale:2;
#define MLY_TIMEOUT_SECONDS 0x0
#define MLY_TIMEOUT_MINUTES 0x1
#define MLY_TIMEOUT_HOURS 0x2
} __packed;
/*
* 14.3 Operation Device
*/
#define MLY_OPDEVICE_PHYSICAL_DEVICE 0x0
#define MLY_OPDEVICE_RAID_DEVICE 0x1
#define MLY_OPDEVICE_PHYSICAL_CHANNEL 0x2
#define MLY_OPDEVICE_RAID_CHANNEL 0x3
#define MLY_OPDEVICE_PHYSICAL_CONTROLLER 0x4
#define MLY_OPDEVICE_RAID_CONTROLLER 0x5
#define MLY_OPDEVICE_CONFIGURATION_GROUP 0x10
/*
* 14.4 Status Bit Format
*
* AKA Status Mailbox Format
*
* XXX format conflict between FSI and PG6 over the ordering of the
* status and sense length fields.
*/
struct mly_status {
u_int16_t command_id;
u_int8_t status;
u_int8_t sense_length;
int32_t residue;
} __packed;
/*
* 14.5 Command Control Bit (CCB) format
*
* This byte is unfortunately named.
*/
struct mly_command_control {
u_int8_t force_unit_access:1;
u_int8_t disable_page_out:1;
u_int8_t res1:1;
u_int8_t extended_sg_table:1;
u_int8_t data_direction:1;
#define MLY_CCB_WRITE 1
#define MLY_CCB_READ 0
u_int8_t res2:1;
u_int8_t no_auto_sense:1;
u_int8_t disable_disconnect:1;
} __packed;
/*
* 15.0 Commands
*
* We use the command names as given by Mylex
*/
#define MDACMD_MEMCOPY 0x1 /* memory to memory copy */
#define MDACMD_SCSIPT 0x2 /* SCSI passthrough (small command) */
#define MDACMD_SCSILCPT 0x3 /* SCSI passthrough (large command) */
#define MDACMD_SCSI 0x4 /* SCSI command for logical/phyiscal device (small command) */
#define MDACMD_SCSILC 0x5 /* SCSI command for logical/phyiscal device (large command) */
#define MDACMD_IOCTL 0x20 /* Management command */
#define MDACMD_IOCTLCHECK 0x23 /* Validate management command (not implemented) */
/*
* 16.0 IOCTL command
*
* We use the IOCTL names as given by Mylex
* Note that only ioctls supported by the PCI controller family are listed
*/
#define MDACIOCTL_GETCONTROLLERINFO 0x1
#define MDACIOCTL_GETLOGDEVINFOVALID 0x3
#define MDACIOCTL_GETPHYSDEVINFOVALID 0x5
#define MDACIOCTL_GETCONTROLLERSTATISTICS 0xb
#define MDACIOCTL_GETLOGDEVSTATISTICS 0xd
#define MDACIOCTL_GETPHYSDEVSTATISTICS 0xf
#define MDACIOCTL_GETHEALTHSTATUS 0x11
#define MDACIOCTL_GETEVENT 0x15
/* flash update */
#define MDACIOCTL_STOREIMAGE 0x2c
#define MDACIOCTL_READIMAGE 0x2d
#define MDACIOCTL_FLASHIMAGES 0x2e
/* battery backup unit */
#define MDACIOCTL_GET_SUBSYSTEM_DATA 0x70
#define MDACIOCTL_SET_SUBSYSTEM_DATA 0x71
/* non-data commands */
#define MDACIOCTL_STARTDISOCVERY 0x81
#define MDACIOCTL_SETRAIDDEVSTATE 0x82
#define MDACIOCTL_INITPHYSDEVSTART 0x84
#define MDACIOCTL_INITPHYSDEVSTOP 0x85
#define MDACIOCTL_INITRAIDDEVSTART 0x86
#define MDACIOCTL_INITRAIDDEVSTOP 0x87
#define MDACIOCTL_REBUILDRAIDDEVSTART 0x88
#define MDACIOCTL_REBUILDRAIDDEVSTOP 0x89
#define MDACIOCTL_MAKECONSISTENTDATASTART 0x8a
#define MDACIOCTL_MAKECONSISTENTDATASTOP 0x8b
#define MDACIOCTL_CONSISTENCYCHECKSTART 0x8c
#define MDACIOCTL_CONSISTENCYCHECKSTOP 0x8d
#define MDACIOCTL_SETMEMORYMAILBOX 0x8e
#define MDACIOCTL_RESETDEVICE 0x90
#define MDACIOCTL_FLUSHDEVICEDATA 0x91
#define MDACIOCTL_PAUSEDEVICE 0x92
#define MDACIOCTL_UNPAUSEDEVICE 0x93
#define MDACIOCTL_LOCATEDEVICE 0x94
#define MDACIOCTL_SETMASTERSLAVEMODE 0x95
#define MDACIOCTL_SETREALTIMECLOCK 0xac
/* RAID configuration */
#define MDACIOCTL_CREATENEWCONF 0xc0
#define MDACIOCTL_DELETERAIDDEV 0xc1
#define MDACIOCTL_REPLACEINTERNALDEV 0xc2
#define MDACIOCTL_RENAMERAIDDEV 0xc3
#define MDACIOCTL_ADDNEWCONF 0xc4
#define MDACIOCTL_XLATEPHYSDEVTORAIDDEV 0xc5
#define MDACIOCTL_MORE 0xc6
#define MDACIOCTL_SETPHYSDEVPARAMETER 0xc8
#define MDACIOCTL_GETPHYSDEVPARAMETER 0xc9
#define MDACIOCTL_CLEARCONF 0xca
#define MDACIOCTL_GETDEVCONFINFO 0xcb
#define MDACIOCTL_GETGROUPCONFINFO 0xcc
#define MDACIOCTL_GETFREESPACELIST 0xcd
#define MDACIOCTL_GETLOGDEVPARAMETER 0xce
#define MDACIOCTL_SETLOGDEVPARAMETER 0xcf
#define MDACIOCTL_GETCONTROLLERPARAMETER 0xd0
#define MDACIOCTL_SETCONTRLLERPARAMETER 0xd1
#define MDACIOCTL_CLEARCONFSUSPMODE 0xd2
#define MDACIOCTL_GETBDT_FOR_SYSDRIVE 0xe0
/*
* 17.1.4 Data Transfer Memory Address Without SG List
*/
struct mly_short_transfer {
struct mly_sg_entry sg[2];
} __packed;
/*
* 17.1.5 Data Transfer Memory Address With SG List
*
* Note that only the first s/g table is currently used.
*/
struct mly_sg_transfer {
u_int16_t entries[3];
u_int16_t res1;
u_int64_t table_physaddr[3];
} __packed;
/*
* 17.1.3 Data Transfer Memory Address Format
*/
union mly_command_transfer {
struct mly_short_transfer direct;
struct mly_sg_transfer indirect;
};
/*
* 21.1 MDACIOCTL_SETREALTIMECLOCK
* 21.7 MDACIOCTL_GETHEALTHSTATUS
* 21.8 MDACIOCTL_GETCONTROLLERINFO
* 21.9 MDACIOCTL_GETLOGDEVINFOVALID
* 21.10 MDACIOCTL_GETPHYSDEVINFOVALID
* 21.11 MDACIOCTL_GETPHYSDEVSTATISTICS
* 21.12 MDACIOCTL_GETLOGDEVSTATISTICS
* 21.13 MDACIOCTL_GETCONTROLLERSTATISTICS
* 21.27 MDACIOCTL_GETBDT_FOR_SYSDRIVE
* 23.4 MDACIOCTL_CREATENEWCONF
* 23.5 MDACIOCTL_ADDNEWCONF
* 23.8 MDACIOCTL_GETDEVCONFINFO
* 23.9 MDACIOCTL_GETFREESPACELIST
* 24.1 MDACIOCTL_MORE
* 25.1 MDACIOCTL_GETPHYSDEVPARAMETER
* 25.2 MDACIOCTL_SETPHYSDEVPARAMETER
* 25.3 MDACIOCTL_GETLOGDEVPARAMETER
* 25.4 MDACIOCTL_SETLOGDEVPARAMETER
* 25.5 MDACIOCTL_GETCONTROLLERPARAMETER
* 25.6 MDACIOCTL_SETCONTROLLERPARAMETER
*
* These commands just transfer data
*/
struct mly_ioctl_param_data {
u_int8_t param[10];
union mly_command_transfer transfer;
} __packed;
/*
* 21.2 MDACIOCTL_SETMEMORYMAILBOX
*/
struct mly_ioctl_param_setmemorymailbox {
u_int8_t health_buffer_size;
u_int8_t res1;
u_int64_t health_buffer_physaddr;
u_int64_t command_mailbox_physaddr;
u_int64_t status_mailbox_physaddr;
u_int64_t res2[2];
} __packed;
/*
* 21.8.2 MDACIOCTL_GETCONTROLLERINFO: Data Format
*/
struct mly_ioctl_getcontrollerinfo {
u_int8_t res1; /* N/A */
u_int8_t interface_type;
u_int8_t controller_type;
u_int8_t res2; /* N/A */
u_int16_t interface_speed;
u_int8_t interface_width;
u_int8_t res3[9]; /* N/A */
char interface_name[16];
char controller_name[16];
u_int8_t res4[16]; /* N/A */
/* firmware release information */
u_int8_t fw_major;
u_int8_t fw_minor;
u_int8_t fw_turn;
u_int8_t fw_build;
u_int8_t fw_day;
u_int8_t fw_month;
u_int8_t fw_century;
u_int8_t fw_year;
/* hardware release information */
u_int8_t hw_revision; /* N/A */
u_int8_t res5[3]; /* N/A */
u_int8_t hw_release_day; /* N/A */
u_int8_t hw_release_month; /* N/A */
u_int8_t hw_release_century; /* N/A */
u_int8_t hw_release_year; /* N/A */
/* hardware manufacturing information */
u_int8_t batch_number; /* N/A */
u_int8_t res6; /* N/A */
u_int8_t plant_number;
u_int8_t res7;
u_int8_t hw_manuf_day;
u_int8_t hw_manuf_month;
u_int8_t hw_manuf_century;
u_int8_t hw_manuf_year;
u_int8_t max_pdd_per_xldd;
u_int8_t max_ildd_per_xldd;
u_int16_t nvram_size;
u_int8_t max_number_of_xld; /* N/A */
u_int8_t res8[3]; /* N/A */
/* unique information per controller */
char serial_number[16];
u_int8_t res9[16]; /* N/A */
/* vendor information */
u_int8_t res10[3]; /* N/A */
u_int8_t oem_information;
char vendor_name[16]; /* N/A */
/* other physical/controller/operation information */
u_int8_t bbu_present:1;
u_int8_t active_clustering:1;
u_int8_t res11:6; /* N/A */
u_int8_t res12[3]; /* N/A */
/* physical device scan information */
u_int8_t physical_scan_active:1;
u_int8_t res13:7; /* N/A */
u_int8_t physical_scan_channel;
u_int8_t physical_scan_target;
u_int8_t physical_scan_lun;
/* maximum command data transfer size */
u_int16_t maximum_block_count;
u_int16_t maximum_sg_entries;
/* logical/physical device counts */
u_int16_t logical_devices_present;
u_int16_t logical_devices_critical;
u_int16_t logical_devices_offline;
u_int16_t physical_devices_present;
u_int16_t physical_disks_present;
u_int16_t physical_disks_critical; /* N/A */
u_int16_t physical_disks_offline;
u_int16_t maximum_parallel_commands;
/* channel and target ID information */
u_int8_t physical_channels_present;
u_int8_t virtual_channels_present;
u_int8_t physical_channels_possible;
u_int8_t virtual_channels_possible;
u_int8_t maximum_targets_possible[16]; /* N/A (6 and up) */
u_int8_t res14[12]; /* N/A */
/* memory/cache information */
u_int16_t memory_size;
u_int16_t cache_size;
u_int32_t valid_cache_size; /* N/A */
u_int32_t dirty_cache_size; /* N/A */
u_int16_t memory_speed;
u_int8_t memory_width;
u_int8_t memory_type:5;
u_int8_t res15:1; /* N/A */
u_int8_t memory_parity:1;
u_int8_t memory_ecc:1;
char memory_information[16]; /* N/A */
/* execution memory information */
u_int16_t exmemory_size;
u_int16_t l2cache_size; /* N/A */
u_int8_t res16[8]; /* N/A */
u_int16_t exmemory_speed;
u_int8_t exmemory_width;
u_int8_t exmemory_type:5;
u_int8_t res17:1; /* N/A */
u_int8_t exmemory_parity:1;
u_int8_t exmemory_ecc:1;
char exmemory_name[16]; /* N/A */
/* CPU information */
struct {
u_int16_t speed;
u_int8_t type;
u_int8_t number;
u_int8_t res1[12]; /* N/A */
char name[16]; /* N/A */
} cpu[2] __packed;
/* debugging/profiling/command time tracing information */
u_int16_t profiling_page; /* N/A */
u_int16_t profiling_programs; /* N/A */
u_int16_t time_trace_page; /* N/A */
u_int16_t time_trace_programs; /* N/A */
u_int8_t res18[8]; /* N/A */
/* error counters on physical devices */
u_int16_t physical_device_bus_resets; /* N/A */
u_int16_t physical_device_parity_errors; /* N/A */
u_int16_t physical_device_soft_errors; /* N/A */
u_int16_t physical_device_commands_failed; /* N/A */
u_int16_t physical_device_miscellaneous_errors; /* N/A */
u_int16_t physical_device_command_timeouts; /* N/A */
u_int16_t physical_device_selection_timeouts; /* N/A */
u_int16_t physical_device_retries; /* N/A */
u_int16_t physical_device_aborts; /* N/A */
u_int16_t physical_device_host_command_aborts; /* N/A */
u_int16_t physical_device_PFAs_detected; /* N/A */
u_int16_t physical_device_host_commands_failed; /* N/A */
u_int8_t res19[8]; /* N/A */
/* error counters on logical devices */
u_int16_t logical_device_soft_errors; /* N/A */
u_int16_t logical_device_commands_failed; /* N/A */
u_int16_t logical_device_host_command_aborts; /* N/A */
u_int16_t res20; /* N/A */
/* error counters on controller */
u_int16_t controller_parity_ecc_errors;
u_int16_t controller_host_command_aborts; /* N/A */
u_int8_t res21[4]; /* N/A */
/* long duration activity information */
u_int16_t background_inits_active;
u_int16_t logical_inits_active;
u_int16_t physical_inits_active;
u_int16_t consistency_checks_active;
u_int16_t rebuilds_active;
u_int16_t MORE_active;
u_int16_t patrol_active; /* N/A */
u_int8_t long_operation_status; /* N/A */
u_int8_t res22; /* N/A */
/* flash ROM information */
u_int8_t flash_type; /* N/A */
u_int8_t res23; /* N/A */
u_int16_t flash_size;
u_int32_t flash_maximum_age;
u_int32_t flash_age;
u_int8_t res24[4]; /* N/A */
char flash_name[16]; /* N/A */
/* firmware runtime information */
u_int8_t rebuild_rate;
u_int8_t background_init_rate;
u_int8_t init_rate;
u_int8_t consistency_check_rate;
u_int8_t res25[4]; /* N/A */
u_int32_t maximum_dp;
u_int32_t free_dp;
u_int32_t maximum_iop;
u_int32_t free_iop;
u_int16_t maximum_comb_length;
u_int16_t maximum_configuration_groups;
u_int8_t installation_abort:1;
u_int8_t maintenance:1;
u_int8_t res26:6; /* N/A */
u_int8_t res27[3]; /* N/A */
u_int8_t res28[32 + 512]; /* N/A */
} __packed;
/*
* 21.9.2 MDACIOCTL_GETLOGDEVINFOVALID
*/
struct mly_ioctl_getlogdevinfovalid {
u_int8_t res1; /* N/A */
u_int8_t channel;
u_int8_t target;
u_int8_t lun;
u_int8_t state; /* see 8.1 */
u_int8_t raid_level; /* see 8.2 */
u_int8_t stripe_size; /* see 8.3 */
u_int8_t cache_line_size; /* see 8.4 */
u_int8_t read_write_control; /* see 8.5 */
u_int8_t consistency_check:1;
u_int8_t rebuild:1;
u_int8_t make_consistent:1;
u_int8_t initialisation:1;
u_int8_t migration:1;
u_int8_t patrol:1;
u_int8_t res2:2; /* N/A */
u_int8_t ar5_limit;
u_int8_t ar5_algo;
u_int16_t logical_device_number;
u_int16_t bios_control;
/* erorr counters */
u_int16_t soft_errors; /* N/A */
u_int16_t commands_failed; /* N/A */
u_int16_t host_command_aborts; /* N/A */
u_int16_t deferred_write_errors; /* N/A */
u_int8_t res3[8]; /* N/A */
/* device size information */
u_int8_t res4[2]; /* N/A */
u_int16_t device_block_size;
u_int32_t original_device_size; /* N/A */
u_int32_t device_size; /* XXX "blocks or MB" Huh? */
u_int8_t res5[4]; /* N/A */
char device_name[32]; /* N/A */
u_int8_t inquiry[36];
u_int8_t res6[12]; /* N/A */
u_int64_t last_read_block; /* N/A */
u_int64_t last_written_block; /* N/A */
u_int64_t consistency_check_block;
u_int64_t rebuild_block;
u_int64_t make_consistent_block;
u_int64_t initialisation_block;
u_int64_t migration_block;
u_int64_t patrol_block; /* N/A */
u_int8_t res7[64]; /* N/A */
} __packed;
/*
* 21.10.2 MDACIOCTL_GETPHYSDEVINFOVALID: Data Format
*/
struct mly_ioctl_getphysdevinfovalid {
u_int8_t res1;
u_int8_t channel;
u_int8_t target;
u_int8_t lun;
u_int8_t raid_ft:1; /* configuration status */
u_int8_t res2:1; /* N/A */
u_int8_t local:1;
u_int8_t res3:5;
u_int8_t host_dead:1; /* multiple host/controller status *//* N/A */
u_int8_t host_connection_dead:1; /* N/A */
u_int8_t res4:6; /* N/A */
u_int8_t state; /* see 8.1 */
u_int8_t width;
u_int16_t speed;
/* multiported physical device information */
u_int8_t ports_available; /* N/A */
u_int8_t ports_inuse; /* N/A */
u_int8_t res5[4];
u_int8_t ether_address[16]; /* N/A */
u_int16_t command_tags;
u_int8_t consistency_check:1; /* N/A */
u_int8_t rebuild:1; /* N/A */
u_int8_t make_consistent:1; /* N/A */
u_int8_t initialisation:1;
u_int8_t migration:1; /* N/A */
u_int8_t patrol:1; /* N/A */
u_int8_t res6:2;
u_int8_t long_operation_status; /* N/A */
u_int8_t parity_errors;
u_int8_t soft_errors;
u_int8_t hard_errors;
u_int8_t miscellaneous_errors;
u_int8_t command_timeouts; /* N/A */
u_int8_t retries; /* N/A */
u_int8_t aborts; /* N/A */
u_int8_t PFAs_detected; /* N/A */
u_int8_t res7[6];
u_int16_t block_size;
u_int32_t original_device_size; /* XXX "blocks or MB" Huh? */
u_int32_t device_size; /* XXX "blocks or MB" Huh? */
u_int8_t res8[4];
char name[16]; /* N/A */
u_int8_t res9[16 + 32];
u_int8_t inquiry[36];
u_int8_t res10[12 + 16];
u_int64_t last_read_block; /* N/A */
u_int64_t last_written_block; /* N/A */
u_int64_t consistency_check_block; /* N/A */
u_int64_t rebuild_block; /* N/A */
u_int64_t make_consistent_block; /* N/A */
u_int64_t initialisation_block; /* N/A */
u_int64_t migration_block; /* N/A */
u_int64_t patrol_block; /* N/A */
u_int8_t res11[256];
} __packed;
union mly_devinfo {
struct mly_ioctl_getlogdevinfovalid logdev;
struct mly_ioctl_getphysdevinfovalid physdev;
};
/*
* 21.11.2 MDACIOCTL_GETPHYSDEVSTATISTICS: Data Format
* 21.12.2 MDACIOCTL_GETLOGDEVSTATISTICS: Data Format
*/
struct mly_ioctl_getdevstatistics {
u_int32_t uptime_ms; /* getphysedevstatistics only */
u_int8_t res1[5]; /* N/A */
u_int8_t channel;
u_int8_t target;
u_int8_t lun;
u_int16_t raid_device; /* getlogdevstatistics only */
u_int8_t res2[2]; /* N/A */
/* total read/write performance including cache data */
u_int32_t total_reads;
u_int32_t total_writes;
u_int32_t total_read_size;
u_int32_t total_write_size;
/* cache read/write performance */
u_int32_t cache_reads; /* N/A */
u_int32_t cache_writes; /* N/A */
u_int32_t cache_read_size; /* N/A */
u_int32_t cache_write_size; /* N/A */
/* commands active/wait information */
u_int32_t command_waits_done; /* N/A */
u_int16_t active_commands; /* N/A */
u_int16_t waiting_commands; /* N/A */
u_int8_t res3[8]; /* N/A */
} __packed;
/*
* 21.13.2 MDACIOCTL_GETCONTROLLERSTATISTICS: Data Format
*/
struct mly_ioctl_getcontrollerstatistics {
u_int32_t uptime_ms; /* N/A */
u_int8_t res1[12]; /* N/A */
/* target physical device performance data information */
u_int32_t target_physical_device_interrupts; /* N/A */
u_int32_t target_physical_device_stray_interrupts; /* N/A */
u_int8_t res2[8]; /* N/A */
u_int32_t target_physical_device_reads; /* N/A */
u_int32_t target_physical_device_writes; /* N/A */
u_int32_t target_physical_device_read_size; /* N/A */
u_int32_t target_physical_device_write_size; /* N/A */
/* host system performance data information */
u_int32_t host_system_interrupts; /* N/A */
u_int32_t host_system_stray_interrupts; /* N/A */
u_int32_t host_system_sent_interrupts; /* N/A */
u_int8_t res3[4]; /* N/A */
u_int32_t physical_device_reads; /* N/A */
u_int32_t physical_device_writes; /* N/A */
u_int32_t physical_device_read_size; /* N/A */
u_int32_t physical_device_write_size; /* N/A */
u_int32_t physical_device_cache_reads; /* N/A */
u_int32_t physical_device_cache_writes; /* N/A */
u_int32_t physical_device_cache_read_size; /* N/A */
u_int32_t physical_device_cache_write_size; /* N/A */
u_int32_t logical_device_reads; /* N/A */
u_int32_t logical_device_writes; /* N/A */
u_int32_t logical_device_read_size; /* N/A */
u_int32_t logical_device_write_size; /* N/A */
u_int32_t logical_device_cache_reads; /* N/A */
u_int32_t logical_device_cache_writes; /* N/A */
u_int32_t logical_device_cache_read_size; /* N/A */
u_int32_t logical_device_cache_write_size; /* N/A */
u_int16_t target_physical_device_commands_active; /* N/A */
u_int16_t target_physical_device_commands_waiting; /* N/A */
u_int16_t host_system_commands_active; /* N/A */
u_int16_t host_system_commands_waiting; /* N/A */
u_int8_t res4[48 + 64]; /* N/A */
} __packed;
/*
* 21.2 MDACIOCTL_SETRAIDDEVSTATE
*/
struct mly_ioctl_param_setraiddevstate {
u_int8_t state;
} __packed;
/*
* 21.27.2 MDACIOCTL_GETBDT_FOR_SYSDRIVE: Data Format
*/
#define MLY_MAX_BDT_ENTRIES 1022
struct mly_ioctl_getbdt_for_sysdrive {
u_int32_t num_of_bdt_entries;
u_int32_t bad_data_block_address[MLY_MAX_BDT_ENTRIES];
} __packed;
/*
* 22.1 Physical Device Definition (PDD)
*/
struct mly_pdd {
u_int8_t type; /* see 8.2 */
u_int8_t state; /* see 8.1 */
u_int16_t raid_device;
u_int32_t device_size; /* XXX "block or MB" Huh? */
u_int8_t controller;
u_int8_t channel;
u_int8_t target;
u_int8_t lun;
u_int32_t start_address;
} __packed;
/*
* 22.2 RAID Device Use Definition (UDD)
*/
struct mly_udd {
u_int8_t res1;
u_int8_t state; /* see 8.1 */
u_int16_t raid_device;
u_int32_t start_address;
} __packed;
/*
* RAID Device Definition (LDD)
*/
struct mly_ldd {
u_int8_t type; /* see 8.2 */
u_int8_t state; /* see 8.1 */
u_int16_t raid_device;
u_int32_t device_size; /* XXX "block or MB" Huh? */
u_int8_t devices_used_count;
u_int8_t stripe_size; /* see 8.3 */
u_int8_t cache_line_size; /* see 8.4 */
u_int8_t read_write_control; /* see 8.5 */
u_int32_t devices_used_size; /* XXX "block or MB" Huh? */
u_int16_t devices_used[32]; /* XXX actual size of this field unknown! */
} __packed;
/*
* Define a datastructure giving the smallest allocation that will hold
* a PDD, UDD or LDD for MDACIOCTL_GETDEVCONFINFO.
*/
struct mly_devconf_hdr {
u_int8_t type; /* see 8.2 */
u_int8_t state; /* see 8.1 */
u_int16_t raid_device;
};
union mly_ioctl_devconfinfo {
struct mly_pdd pdd;
struct mly_udd udd;
struct mly_ldd ldd;
struct mly_devconf_hdr hdr;
};
/*
* 22.3 MDACIOCTL_RENAMERAIDDEV
*
* XXX this command is listed as transferring data, but does not define the data.
*/
struct mly_ioctl_param_renameraiddev {
u_int8_t new_raid_device;
} __packed;
/*
* 23.6.2 MDACIOCTL_XLATEPHYSDEVTORAIDDEV
*
* XXX documentation suggests this format will change
*/
struct mly_ioctl_param_xlatephysdevtoraiddev {
u_int16_t raid_device;
u_int8_t res1[2];
u_int8_t controller;
u_int8_t channel;
u_int8_t target;
u_int8_t lun;
} __packed;
/*
* 23.7 MDACIOCTL_GETGROUPCONFINFO
*/
struct mly_ioctl_param_getgroupconfinfo {
u_int16_t group;
u_int8_t res1[8];
union mly_command_transfer transfer;
} __packed;
/*
* 23.9.2 MDACIOCTL_GETFREESPACELIST: Data Format
*
* The controller will populate as much of this structure as is provided,
* or as is required to fully list the free space available.
*/
struct mly_ioctl_getfreespacelist_entry {
u_int16_t raid_device;
u_int8_t res1[6];
u_int32_t address; /* XXX "blocks or MB" Huh? */
u_int32_t size; /* XXX "blocks or MB" Huh? */
} __packed;
struct mly_ioctl_getfrespacelist {
u_int16_t returned_entries;
u_int16_t total_entries;
u_int8_t res1[12];
struct mly_ioctl_getfreespacelist_entry space[0]; /* expand to suit */
} __packed;
/*
* 27.1 MDACIOCTL_GETSUBSYSTEMDATA
* 27.2 MDACIOCTL_SETSUBSYSTEMDATA
*
* PCI controller only supports a limited subset of the possible operations.
*
* XXX where does the status end up? (the command transfers no data)
*/
struct mly_ioctl_param_subsystemdata {
u_int8_t operation:4;
#define MLY_BBU_GETSTATUS 0x00
#define MLY_BBU_SET_THRESHOLD 0x00 /* minutes in param[0,1] */
u_int8_t subsystem:4;
#define MLY_SUBSYSTEM_BBU 0x01
u_int parameter[3]; /* only for SETSUBSYSTEMDATA */
} __packed;
struct mly_ioctl_getsubsystemdata_bbustatus {
u_int16_t current_power;
u_int16_t maximum_power;
u_int16_t power_threshold;
u_int8_t charge_level;
u_int8_t hardware_version;
u_int8_t battery_type;
#define MLY_BBU_TYPE_UNKNOWN 0x00
#define MLY_BBU_TYPE_NICAD 0x01
#define MLY_BBU_TYPE_MISSING 0xfe
u_int8_t res1;
u_int8_t operation_status;
#define MLY_BBU_STATUS_NO_SYNC 0x01
#define MLY_BBU_STATUS_OUT_OF_SYNC 0x02
#define MLY_BBU_STATUS_FIRST_WARNING 0x04
#define MLY_BBU_STATUS_SECOND_WARNING 0x08
#define MLY_BBU_STATUS_RECONDITIONING 0x10
#define MLY_BBU_STATUS_DISCHARGING 0x20
#define MLY_BBU_STATUS_FASTCHARGING 0x40
u_int8_t res2;
} __packed;
/*
* 28.9 MDACIOCTL_RESETDEVICE
* 28.10 MDACIOCTL_FLUSHDEVICEDATA
* 28.11 MDACIOCTL_PAUSEDEVICE
* 28.12 MDACIOCTL_UNPAUSEDEVICE
*/
struct mly_ioctl_param_deviceoperation {
u_int8_t operation_device; /* see 14.3 */
} __packed;
/*
* 31.1 Event Data Format
*/
struct mly_event {
u_int32_t sequence_number;
u_int32_t timestamp;
u_int32_t code;
u_int8_t controller;
u_int8_t channel;
u_int8_t target; /* also enclosure */
u_int8_t lun; /* also enclosure unit */
u_int8_t res1[4];
u_int32_t param;
u_int8_t sense[40];
} __packed;
/*
* 31.2 MDACIOCTL_GETEVENT
*/
struct mly_ioctl_param_getevent {
u_int16_t sequence_number_low;
u_int8_t res1[8];
union mly_command_transfer transfer;
} __packed;
union mly_ioctl_param {
struct mly_ioctl_param_data data;
struct mly_ioctl_param_setmemorymailbox setmemorymailbox;
struct mly_ioctl_param_setraiddevstate setraiddevstate;
struct mly_ioctl_param_renameraiddev renameraiddev;
struct mly_ioctl_param_xlatephysdevtoraiddev xlatephysdevtoraiddev;
struct mly_ioctl_param_getgroupconfinfo getgroupconfinfo;
struct mly_ioctl_param_subsystemdata subsystemdata;
struct mly_ioctl_param_deviceoperation deviceoperation;
struct mly_ioctl_param_getevent getevent;
};
/*
* 19 SCSI Command Format
*/
struct mly_command_address_physical {
u_int8_t lun;
u_int8_t target;
u_int8_t channel:3;
u_int8_t controller:5;
} __packed;
struct mly_command_address_logical {
u_int16_t logdev;
u_int8_t res1:3;
u_int8_t controller:5;
} __packed;
union mly_command_address {
struct mly_command_address_physical phys;
struct mly_command_address_logical log;
};
struct mly_command_generic {
u_int16_t command_id;
u_int8_t opcode;
struct mly_command_control command_control;
u_int32_t data_size;
u_int64_t sense_buffer_address;
union mly_command_address addr;
struct mly_timeout timeout;
u_int8_t maximum_sense_size;
u_int8_t res1[11];
union mly_command_transfer transfer;
} __packed;
/*
* 19.1 MDACMD_SCSI & MDACMD_SCSIPT
*/
#define MLY_CMD_SCSI_SMALL_CDB 10
struct mly_command_scsi_small {
u_int16_t command_id;
u_int8_t opcode;
struct mly_command_control command_control;
u_int32_t data_size;
u_int64_t sense_buffer_address;
union mly_command_address addr;
struct mly_timeout timeout;
u_int8_t maximum_sense_size;
u_int8_t cdb_length;
u_int8_t cdb[MLY_CMD_SCSI_SMALL_CDB];
union mly_command_transfer transfer;
} __packed;
/*
* 19.2 MDACMD_SCSILC & MDACMD_SCSILCPT
*/
struct mly_command_scsi_large {
u_int16_t command_id;
u_int8_t opcode;
struct mly_command_control command_control;
u_int32_t data_size;
u_int64_t sense_buffer_address;
union mly_command_address addr;
struct mly_timeout timeout;
u_int8_t maximum_sense_size;
u_int8_t cdb_length;
u_int16_t res1;
u_int64_t cdb_physaddr;
union mly_command_transfer transfer;
} __packed;
/*
* 20.1 IOCTL Command Format: Internal Bus
*/
struct mly_command_ioctl {
u_int16_t command_id;
u_int8_t opcode;
struct mly_command_control command_control;
u_int32_t data_size;
u_int64_t sense_buffer_address;
union mly_command_address addr;
struct mly_timeout timeout;
u_int8_t maximum_sense_size;
u_int8_t sub_ioctl;
union mly_ioctl_param param;
} __packed;
/*
* PG6: 8.2.2
*/
struct mly_command_mmbox {
u_int32_t flag;
u_int8_t data[60];
} __packed;
union mly_command_packet {
struct mly_command_generic generic;
struct mly_command_scsi_small scsi_small;
struct mly_command_scsi_large scsi_large;
struct mly_command_ioctl ioctl;
struct mly_command_mmbox mmbox;
};
/*
* PG6: 5.3
*/
#define MLY_I960RX_COMMAND_MAILBOX 0x10
#define MLY_I960RX_STATUS_MAILBOX 0x18
#define MLY_I960RX_IDBR 0x20
#define MLY_I960RX_ODBR 0x2c
#define MLY_I960RX_ERROR_STATUS 0x2e
#define MLY_I960RX_INTERRUPT_STATUS 0x30
#define MLY_I960RX_INTERRUPT_MASK 0x34
#define MLY_STRONGARM_COMMAND_MAILBOX 0x50
#define MLY_STRONGARM_STATUS_MAILBOX 0x58
#define MLY_STRONGARM_IDBR 0x60
#define MLY_STRONGARM_ODBR 0x61
#define MLY_STRONGARM_ERROR_STATUS 0x63
#define MLY_STRONGARM_INTERRUPT_STATUS 0x30
#define MLY_STRONGARM_INTERRUPT_MASK 0x34
/*
* PG6: 5.4.3 Doorbell 0
*/
#define MLY_HM_CMDSENT (1<<0)
#define MLY_HM_STSACK (1<<1)
#define MLY_SOFT_RST (1<<3)
#define MLY_AM_CMDSENT (1<<4)
/*
* PG6: 5.4.4 Doorbell 1
*
* Note that the documentation claims that these bits are set when the
* status queue(s) are empty, whereas the Linux driver and experience
* suggest they are set when there is status available.
*/
#define MLY_HM_STSREADY (1<<0)
#define MLY_AM_STSREADY (1<<1)
/*
* PG6: 5.4.6 Doorbell 3
*/
#define MLY_MSG_EMPTY (1<<3)
#define MLY_MSG_SPINUP 0x08
#define MLY_MSG_RACE_RECOVERY_FAIL 0x60
#define MLY_MSG_RACE_IN_PROGRESS 0x70
#define MLY_MSG_RACE_ON_CRITICAL 0xb0
#define MLY_MSG_PARITY_ERROR 0xf0
/*
* PG6: 5.4.8 Outbound Interrupt Mask
*/
#define MLY_INTERRUPT_MASK_DISABLE 0xff
#define MLY_INTERRUPT_MASK_ENABLE (0xff & ~(1<<2))
/*
* PG6: 8.2 Advanced Mailbox Scheme
*
* Note that this must be allocated on a 4k boundary, and all internal
* fields must also reside on a 4k boundary.
* We could dynamically size this structure, but the extra effort
* is probably unjustified. Note that these buffers do not need to be
* adjacent - we just group them to simplify allocation of the bus-visible
* buffer.
*
* XXX Note that for some reason, if MLY_MMBOX_COMMANDS is > 64, the controller
* fails to respond to the command at (MLY_MMBOX_COMMANDS - 64). It's not
* wrapping to 0 at this point (determined by experimentation). This is not
* consistent with the Linux driver's implementation.
* Whilst it's handy to have lots of room for status returns in case we end up
* being slow getting back to completed commands, it seems unlikely that we
* would get 64 commands ahead of the controller on the submissions side, so
* the current workaround is to simply limit the command ring to 64 entries.
*/
union mly_status_packet {
struct mly_status status;
struct {
u_int32_t flag;
u_int8_t data[4];
} __packed mmbox;
};
union mly_health_region {
struct mly_health_status status;
u_int8_t pad[1024];
};
#define MLY_MMBOX_COMMANDS 64
#define MLY_MMBOX_STATUS 512
struct mly_mmbox {
union mly_command_packet mmm_command[MLY_MMBOX_COMMANDS];
union mly_status_packet mmm_status[MLY_MMBOX_STATUS];
union mly_health_region mmm_health;
} __packed;
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