src/sys/dev/disk/ata/ata-raid.h - view

File: [DragonFly] / src / sys / dev / disk / ata / ata-raid.h
Revision 1.3: download - view: text, annotated - select for diffs
Tue Jul 22 17:03:27 2003 UTC (9 years, 10 months ago) by dillon
Branches: MAIN
CVS tags: HEAD

DEV messaging stage 2/4: In this stage all DEV commands are now being
funneled through the message port for action by the port's beginmsg function.
CONSOLE and DISK device shims replace the port with their own and then
forward to the original.  FB (Frame Buffer) shims supposedly do the same
thing but I haven't been able to test it.   I don't expect instability
in mainline code but there might be easy-to-fix, and some drivers still need
to be converted.  See primarily: kern/kern_device.c (new dev_*() functions and
inherits cdevsw code from kern/kern_conf.c), sys/device.h, and kern/subr_disk.c
for the high points.

In this stage all DEV messages are still acted upon synchronously in the
context of the caller.  We cannot create a separate handler thread until
the copyin's (primarily in ioctl functions) are made thread-aware.

Note that the messaging shims are going to look rather messy in these early
days but as more subsystems are converted over we will begin to use
pre-initialized messages and message forwarding to avoid having to constantly
rebuild messages prior to use.

Note that DEV itself is a mess oweing to its 4.x roots and will be cleaned
up in subsequent passes.  e.g. the way sub-devices inherit the main device's
cdevsw was always a bad hack and it still is, and several functions
(mmap, kqfilter, psize, poll) return results rather then error codes, which
will be fixed since now we have a message to store the result in :-)

1: /*- 2: * Copyright (c) 2000,2001,2002 Søren Schmidt <sos@FreeBSD.org> 3: * All rights reserved. 4: * 5: * Redistribution and use in source and binary forms, with or without 6: * modification, are permitted provided that the following conditions 7: * are met: 8: * 1. Redistributions of source code must retain the above copyright 9: * notice, this list of conditions and the following disclaimer, 10: * without modification, immediately at the beginning of the file. 11: * 2. Redistributions in binary form must reproduce the above copyright 12: * notice, this list of conditions and the following disclaimer in the 13: * documentation and/or other materials provided with the distribution. 14: * 3. The name of the author may not be used to endorse or promote products 15: * derived from this software without specific prior written permission. 16: * 17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27: * 28: * $FreeBSD: src/sys/dev/ata/ata-raid.h,v 1.2.2.8 2002/04/11 09:31:57 sos Exp $ 29: * $DragonFly: src/sys/dev/disk/ata/ata-raid.h,v 1.3 2003/07/22 17:03:27 dillon Exp $ 30: */ 31: 32: /* misc defines */ 33: #define MAX_ARRAYS 16 34: #define MAX_DISKS 16 35: #define AR_PROXIMITY 2048 36: #define AR_READ 0x01 37: #define AR_WRITE 0x02 38: #define AR_WAIT 0x04 39: #define AR_STRATEGY(x) dev_port_dstrategy((x)->b_dev->si_disk->d_fwdport, (x)->b_dev->si_disk->d_dev, x) 40: #define AD_SOFTC(x) ((struct ad_softc *)(x.device->driver)) 41: #define ATA_MAGIC "FreeBSD ATA driver RAID " 42: 43: struct ar_disk { 44: struct ata_device *device; 45: u_int64_t disk_sectors; /* sectors on this disk */ 46: off_t last_lba; /* last lba used */ 47: int flags; 48: #define AR_DF_PRESENT 0x00000001 49: #define AR_DF_ASSIGNED 0x00000002 50: #define AR_DF_SPARE 0x00000004 51: #define AR_DF_ONLINE 0x00000008 52: }; 53: 54: struct ar_softc { 55: int lun; 56: int32_t magic_0; /* ident for this array */ 57: int32_t magic_1; /* ident for this array */ 58: int flags; 59: #define AR_F_RAID0 0x0001 /* STRIPE */ 60: #define AR_F_RAID1 0x0002 /* MIRROR */ 61: #define AR_F_SPAN 0x0004 /* SPAN */ 62: #define AR_F_READY 0x0100 63: #define AR_F_DEGRADED 0x0200 64: #define AR_F_REBUILDING 0x0400 65: #define AR_F_PROMISE_RAID 0x1000 66: #define AR_F_HIGHPOINT_RAID 0x2000 67: #define AR_F_FREEBSD_RAID 0x4000 68: 69: int total_disks; /* number of disks in this array */ 70: int generation; /* generation of this array */ 71: struct ar_disk disks[MAX_DISKS+1]; /* ptr to each disk in array */ 72: int width; /* array width in disks */ 73: u_int16_t heads; 74: u_int16_t sectors; 75: u_int32_t cylinders; 76: u_int64_t total_sectors; 77: int interleave; /* interleave in blocks */ 78: int reserved; /* sectors that are NOT to be used */ 79: int offset; /* offset from start of disk */ 80: u_int64_t lock_start; /* start of locked area for rebuild */ 81: u_int64_t lock_end; /* end of locked area for rebuild */ 82: struct disk disk; /* disklabel/slice stuff */ 83: struct proc *pid; 84: dev_t dev; /* device place holder */ 85: }; 86: 87: struct ar_buf { 88: struct buf bp; /* must be first element! */ 89: struct buf *org; 90: struct ar_buf *mirror; 91: int drive; 92: int flags; 93: #define AB_F_DONE 0x01 94: }; 95: 96: #define HPT_LBA 9 97: 98: struct highpoint_raid_conf { 99: int8_t filler1[32]; 100: u_int32_t magic; /* 0x20 */ 101: #define HPT_MAGIC_OK 0x5a7816f0 102: #define HPT_MAGIC_BAD 0x5a7816fd 103: 104: u_int32_t magic_0; 105: u_int32_t magic_1; 106: u_int32_t order; 107: #define HPT_O_RAID0 0x01 108: #define HPT_O_RAID1 0x02 109: #define HPT_O_OK 0x04 110: 111: u_int8_t array_width; 112: u_int8_t stripe_shift; 113: u_int8_t type; 114: #define HPT_T_RAID0 0x00 115: #define HPT_T_RAID1 0x01 116: #define HPT_T_RAID01_RAID0 0x02 117: #define HPT_T_SPAN 0x03 118: #define HPT_T_RAID_3 0x04 119: #define HPT_T_RAID_5 0x05 120: #define HPT_T_SINGLEDISK 0x06 121: #define HPT_T_RAID01_RAID1 0x07 122: 123: u_int8_t disk_number; 124: u_int32_t total_sectors; 125: u_int32_t disk_mode; 126: u_int32_t boot_mode; 127: u_int8_t boot_disk; 128: u_int8_t boot_protect; 129: u_int8_t error_log_entries; 130: u_int8_t error_log_index; 131: struct { 132: u_int32_t timestamp; 133: u_int8_t reason; 134: #define HPT_R_REMOVED 0xfe 135: #define HPT_R_BROKEN 0xff 136: 137: u_int8_t disk; 138: u_int8_t status; 139: u_int8_t sectors; 140: u_int32_t lba; 141: } errorlog[32]; 142: int8_t filler2[16]; 143: u_int32_t rebuild_lba; 144: u_int8_t dummy_1; 145: u_int8_t name_1[15]; 146: u_int8_t dummy_2; 147: u_int8_t name_2[15]; 148: int8_t filler3[8]; 149: } __attribute__((packed)); 150: 151: 152: #define PR_LBA(adp) \ 153: (((adp->total_secs / (adp->heads * adp->sectors)) * \ 154: adp->heads * adp->sectors) - adp->sectors) 155: 156: struct promise_raid_conf { 157: char promise_id[24]; 158: #define PR_MAGIC "Promise Technology, Inc." 159: 160: u_int32_t dummy_0; 161: u_int64_t magic_0; 162: #define PR_MAGIC0(x) (x.device ? ((u_int64_t)x.device->channel->unit<<48) | \ 163: ((u_int64_t)(x.device->unit != 0) << 56) : 0) 164: u_int16_t magic_1; 165: u_int32_t magic_2; 166: u_int8_t filler1[470]; 167: struct { 168: u_int32_t integrity; /* 0x200 */ 169: #define PR_I_VALID 0x00000080 170: 171: u_int8_t flags; 172: #define PR_F_VALID 0x00000001 173: #define PR_F_ONLINE 0x00000002 174: #define PR_F_ASSIGNED 0x00000004 175: #define PR_F_SPARE 0x00000008 176: #define PR_F_DUPLICATE 0x00000010 177: #define PR_F_REDIR 0x00000020 178: #define PR_F_DOWN 0x00000040 179: #define PR_F_READY 0x00000080 180: 181: u_int8_t disk_number; 182: u_int8_t channel; 183: u_int8_t device; 184: u_int64_t magic_0 __attribute__((packed)); 185: u_int32_t disk_offset; /* 0x210 */ 186: u_int32_t disk_sectors; 187: u_int32_t rebuild_lba; 188: u_int16_t generation; 189: u_int8_t status; 190: #define PR_S_VALID 0x01 191: #define PR_S_ONLINE 0x02 192: #define PR_S_INITED 0x04 193: #define PR_S_READY 0x08 194: #define PR_S_DEGRADED 0x10 195: #define PR_S_MARKED 0x20 196: #define PR_S_FUNCTIONAL 0x80 197: 198: u_int8_t type; 199: #define PR_T_RAID0 0x00 200: #define PR_T_RAID1 0x01 201: #define PR_T_RAID3 0x02 202: #define PR_T_RAID5 0x04 203: #define PR_T_SPAN 0x08 204: 205: u_int8_t total_disks; /* 0x220 */ 206: u_int8_t stripe_shift; 207: u_int8_t array_width; 208: u_int8_t array_number; 209: u_int32_t total_sectors; 210: u_int16_t cylinders; 211: u_int8_t heads; 212: u_int8_t sectors; 213: int64_t magic_1 __attribute__((packed)); 214: struct { /* 0x240 */ 215: u_int8_t flags; 216: u_int8_t dummy_0; 217: u_int8_t channel; 218: u_int8_t device; 219: u_int64_t magic_0 __attribute__((packed)); 220: } disk[8]; 221: } raid; 222: int32_t filler2[346]; 223: u_int32_t checksum; 224: } __attribute__((packed)); 225: 226: int ata_raiddisk_probe(struct ad_softc *); 227: int ata_raiddisk_attach(struct ad_softc *); 228: int ata_raiddisk_detach(struct ad_softc *); 229: void ata_raid_attach(void); 230: int ata_raid_create(struct raid_setup *); 231: int ata_raid_delete(int); 232: int ata_raid_status(int array, struct raid_status *); 233: int ata_raid_rebuild(int); 234: