| geom_ccd.c (157581) | geom_ccd.c (157740) |
|---|---|
| 1/*- 2 * Copyright (c) 2003 Poul-Henning Kamp. 3 * Copyright (c) 1995 Jason R. Thorpe. 4 * Copyright (c) 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * All rights reserved. 7 * Copyright (c) 1988 University of Utah. 8 * --- 36 unchanged lines hidden (view full) --- 45 * Moffett Field, CA 94035 46 * 47 * from: Utah $Hdr: cd.c 1.6 90/11/28$ 48 * @(#)cd.c 8.2 (Berkeley) 11/16/93 49 * $NetBSD: ccd.c,v 1.22 1995/12/08 19:13:26 thorpej Exp $ 50 */ 51 52#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2003 Poul-Henning Kamp. 3 * Copyright (c) 1995 Jason R. Thorpe. 4 * Copyright (c) 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * All rights reserved. 7 * Copyright (c) 1988 University of Utah. 8 * --- 36 unchanged lines hidden (view full) --- 45 * Moffett Field, CA 94035 46 * 47 * from: Utah $Hdr: cd.c 1.6 90/11/28$ 48 * @(#)cd.c 8.2 (Berkeley) 11/16/93 49 * $NetBSD: ccd.c,v 1.22 1995/12/08 19:13:26 thorpej Exp $ 50 */ 51 52#include <sys/cdefs.h> |
| 53__FBSDID("$FreeBSD: head/sys/geom/geom_ccd.c 157581 2006-04-07 16:19:48Z marcel $"); | 53__FBSDID("$FreeBSD: head/sys/geom/geom_ccd.c 157740 2006-04-13 20:35:31Z cracauer $"); |
| 54 55#include <sys/param.h> 56#include <sys/systm.h> 57#include <sys/kernel.h> 58#include <sys/module.h> 59#include <sys/bio.h> 60#include <sys/malloc.h> 61#include <geom/geom.h> --- 5 unchanged lines hidden (view full) --- 67 */ 68#if !defined(CCD_OFFSET) 69#define CCD_OFFSET 16 70#endif 71 72/* sc_flags */ 73#define CCDF_UNIFORM 0x02 /* use LCCD of sizes for uniform interleave */ 74#define CCDF_MIRROR 0x04 /* use mirroring */ | 54 55#include <sys/param.h> 56#include <sys/systm.h> 57#include <sys/kernel.h> 58#include <sys/module.h> 59#include <sys/bio.h> 60#include <sys/malloc.h> 61#include <geom/geom.h> --- 5 unchanged lines hidden (view full) --- 67 */ 68#if !defined(CCD_OFFSET) 69#define CCD_OFFSET 16 70#endif 71 72/* sc_flags */ 73#define CCDF_UNIFORM 0x02 /* use LCCD of sizes for uniform interleave */ 74#define CCDF_MIRROR 0x04 /* use mirroring */ |
| 75#define CCDF_NO_OFFSET 0x08 /* do not leave space in front */ 76#define CCDF_LINUX 0x10 /* use Linux compatibility mode */ |
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| 75 76/* Mask of user-settable ccd flags. */ 77#define CCDF_USERMASK (CCDF_UNIFORM|CCDF_MIRROR) 78 79/* 80 * Interleave description table. 81 * Computed at boot time to speed irregular-interleave lookups. 82 * The idea is that we interleave in "groups". First we interleave --- 48 unchanged lines hidden (view full) --- 131 daddr_t sc_size; /* size of ccd */ 132 int sc_ileave; /* interleave */ 133 u_int sc_ndisks; /* number of components */ 134 struct ccdcinfo *sc_cinfo; /* component info */ 135 struct ccdiinfo *sc_itable; /* interleave table */ 136 u_int32_t sc_secsize; /* # bytes per sector */ 137 int sc_pick; /* side of mirror picked */ 138 daddr_t sc_blk[2]; /* mirror localization */ | 77 78/* Mask of user-settable ccd flags. */ 79#define CCDF_USERMASK (CCDF_UNIFORM|CCDF_MIRROR) 80 81/* 82 * Interleave description table. 83 * Computed at boot time to speed irregular-interleave lookups. 84 * The idea is that we interleave in "groups". First we interleave --- 48 unchanged lines hidden (view full) --- 133 daddr_t sc_size; /* size of ccd */ 134 int sc_ileave; /* interleave */ 135 u_int sc_ndisks; /* number of components */ 136 struct ccdcinfo *sc_cinfo; /* component info */ 137 struct ccdiinfo *sc_itable; /* interleave table */ 138 u_int32_t sc_secsize; /* # bytes per sector */ 139 int sc_pick; /* side of mirror picked */ 140 daddr_t sc_blk[2]; /* mirror localization */ |
| 141 u_int32_t sc_offset; /* actual offset used */ |
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| 139}; 140 141static g_start_t g_ccd_start; 142static void ccdiodone(struct bio *bp); 143static void ccdinterleave(struct ccd_s *); 144static int ccdinit(struct gctl_req *req, struct ccd_s *); 145static int ccdbuffer(struct bio **ret, struct ccd_s *, 146 struct bio *, daddr_t, caddr_t, long); --- 63 unchanged lines hidden (view full) --- 210 int maxsecsize; 211 off_t mediasize; 212 u_int sectorsize; 213 214 cs->sc_size = 0; 215 216 maxsecsize = 0; 217 minsize = 0; | 142}; 143 144static g_start_t g_ccd_start; 145static void ccdiodone(struct bio *bp); 146static void ccdinterleave(struct ccd_s *); 147static int ccdinit(struct gctl_req *req, struct ccd_s *); 148static int ccdbuffer(struct bio **ret, struct ccd_s *, 149 struct bio *, daddr_t, caddr_t, long); --- 63 unchanged lines hidden (view full) --- 213 int maxsecsize; 214 off_t mediasize; 215 u_int sectorsize; 216 217 cs->sc_size = 0; 218 219 maxsecsize = 0; 220 minsize = 0; |
| 221 222 if (cs->sc_flags & CCDF_LINUX) { 223 cs->sc_offset = 0; 224 cs->sc_ileave *= 2; 225 if (cs->sc_flags & CCDF_MIRROR && cs->sc_ndisks != 2) 226 gctl_error(req, "Mirror mode for Linux raids is " 227 "only supported with 2 devices"); 228 } else { 229 if (cs->sc_flags & CCDF_NO_OFFSET) 230 cs->sc_offset = 0; 231 else 232 cs->sc_offset = CCD_OFFSET; 233 234 } |
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| 218 for (ix = 0; ix < cs->sc_ndisks; ix++) { 219 ci = &cs->sc_cinfo[ix]; 220 221 mediasize = ci->ci_provider->mediasize; 222 sectorsize = ci->ci_provider->sectorsize; 223 if (sectorsize > maxsecsize) 224 maxsecsize = sectorsize; | 235 for (ix = 0; ix < cs->sc_ndisks; ix++) { 236 ci = &cs->sc_cinfo[ix]; 237 238 mediasize = ci->ci_provider->mediasize; 239 sectorsize = ci->ci_provider->sectorsize; 240 if (sectorsize > maxsecsize) 241 maxsecsize = sectorsize; |
| 225 size = mediasize / DEV_BSIZE - CCD_OFFSET; | 242 size = mediasize / DEV_BSIZE - cs->sc_offset; |
| 226 227 /* Truncate to interleave boundary */ 228 229 if (cs->sc_ileave > 1) 230 size -= size % cs->sc_ileave; 231 232 if (size == 0) { 233 gctl_error(req, "Component %s has effective size zero", --- 365 unchanged lines hidden (view full) --- 599 600 /* 601 * Fill in the component buf structure. 602 */ 603 cbp = g_clone_bio(bp); 604 if (cbp == NULL) 605 return (ENOMEM); 606 cbp->bio_done = g_std_done; | 243 244 /* Truncate to interleave boundary */ 245 246 if (cs->sc_ileave > 1) 247 size -= size % cs->sc_ileave; 248 249 if (size == 0) { 250 gctl_error(req, "Component %s has effective size zero", --- 365 unchanged lines hidden (view full) --- 616 617 /* 618 * Fill in the component buf structure. 619 */ 620 cbp = g_clone_bio(bp); 621 if (cbp == NULL) 622 return (ENOMEM); 623 cbp->bio_done = g_std_done; |
| 607 cbp->bio_offset = dbtob(cbn + cboff + CCD_OFFSET); | 624 cbp->bio_offset = dbtob(cbn + cboff + cs->sc_offset); |
| 608 cbp->bio_data = addr; 609 if (cs->sc_ileave == 0) 610 cbc = dbtob((off_t)(ci->ci_size - cbn)); 611 else 612 cbc = dbtob((off_t)(cs->sc_ileave - cboff)); 613 cbp->bio_length = (cbc < bcount) ? cbc : bcount; 614 615 cbp->bio_from = ci->ci_consumer; --- 119 unchanged lines hidden (view full) --- 735 KASSERT(error == 0, ("attach to %s failed", pp->name)); 736 sc->sc_cinfo[i].ci_consumer = cp; 737 sc->sc_cinfo[i].ci_provider = pp; 738 } 739 740 sc->sc_unit = *unit; 741 sc->sc_ileave = *ileave; 742 | 625 cbp->bio_data = addr; 626 if (cs->sc_ileave == 0) 627 cbc = dbtob((off_t)(ci->ci_size - cbn)); 628 else 629 cbc = dbtob((off_t)(cs->sc_ileave - cboff)); 630 cbp->bio_length = (cbc < bcount) ? cbc : bcount; 631 632 cbp->bio_from = ci->ci_consumer; --- 119 unchanged lines hidden (view full) --- 752 KASSERT(error == 0, ("attach to %s failed", pp->name)); 753 sc->sc_cinfo[i].ci_consumer = cp; 754 sc->sc_cinfo[i].ci_provider = pp; 755 } 756 757 sc->sc_unit = *unit; 758 sc->sc_ileave = *ileave; 759 |
| 760 if (gctl_get_param(req, "no_offset", NULL)) 761 sc->sc_flags |= CCDF_NO_OFFSET; 762 if (gctl_get_param(req, "linux", NULL)) 763 sc->sc_flags |= CCDF_LINUX; 764 |
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| 743 if (gctl_get_param(req, "uniform", NULL)) 744 sc->sc_flags |= CCDF_UNIFORM; 745 if (gctl_get_param(req, "mirror", NULL)) 746 sc->sc_flags |= CCDF_MIRROR; 747 748 if (sc->sc_ileave == 0 && (sc->sc_flags & CCDF_MIRROR)) { 749 printf("%s: disabling mirror, interleave is 0\n", gp->name); 750 sc->sc_flags &= ~(CCDF_MIRROR); --- 119 unchanged lines hidden --- | 765 if (gctl_get_param(req, "uniform", NULL)) 766 sc->sc_flags |= CCDF_UNIFORM; 767 if (gctl_get_param(req, "mirror", NULL)) 768 sc->sc_flags |= CCDF_MIRROR; 769 770 if (sc->sc_ileave == 0 && (sc->sc_flags & CCDF_MIRROR)) { 771 printf("%s: disabling mirror, interleave is 0\n", gp->name); 772 sc->sc_flags &= ~(CCDF_MIRROR); --- 119 unchanged lines hidden --- |