diff options
Diffstat (limited to 'sys/dev/softraid_raid6.c')
| -rw-r--r-- | sys/dev/softraid_raid6.c | 40 |
1 files changed, 38 insertions, 2 deletions
diff --git a/sys/dev/softraid_raid6.c b/sys/dev/softraid_raid6.c index ea5a674eb52..46eff9f9691 100644 --- a/sys/dev/softraid_raid6.c +++ b/sys/dev/softraid_raid6.c @@ -1,4 +1,4 @@ -/* $OpenBSD: softraid_raid6.c,v 1.6 2009/08/26 20:14:44 jordan Exp $ */ +/* $OpenBSD: softraid_raid6.c,v 1.7 2009/11/13 23:34:24 jordan Exp $ */ /* * Copyright (c) 2009 Marco Peereboom <marco@peereboom.us> * Copyright (c) 2009 Jordan Hargrave <jordan@openbsd.org> @@ -79,6 +79,41 @@ int gf_premul(uint8_t); #define SR_FAILP (1L << 2) #define SR_FAILQ (1L << 3) +#define M_FAIL 0x00 + +#define M_RX 0x01 +#define M_RXP 0x02 +#define M_RXQ 0x03 +#define M_RXY 0x04 +#define M_RFLG 0x0F + +#define M_WXPQ 0x10 +#define M_WXY 0x20 +#define M_WPQ 0x30 +#define M_WFLG 0xF0 + +/* Mapping of Failure Flags to Read/Write state */ +uint8_t sr_rwmode[16] = { + [SR_FAILX+SR_FAILY+SR_FAILP] = M_FAIL, + [SR_FAILX+SR_FAILY+SR_FAILQ] = M_FAIL, + [SR_FAILX+SR_FAILP+SR_FAILQ] = M_FAIL, + [SR_FAILY+SR_FAILP+SR_FAILQ] = M_FAIL, + [SR_FAILX+SR_FAILY+SR_FAILP+SR_FAILQ] = M_FAIL, + + [SR_NOFAIL] = M_RX | M_WXPQ, + [SR_FAILY] = M_RX | M_WXPQ, + [SR_FAILP] = M_RX | M_WXPQ, + [SR_FAILQ] = M_RX | M_WXPQ, + [SR_FAILY+SR_FAILP] = M_RX | M_WXPQ, + [SR_FAILY+SR_FAILQ] = M_RX | M_WXPQ, + [SR_FAILP+SR_FAILQ] = M_RX | M_WXPQ, + + [SR_FAILX] = M_RXQ | M_WPQ, + [SR_FAILX+SR_FAILQ] = M_RXQ | M_WPQ, + [SR_FAILX+SR_FAILP] = M_RXP | M_WPQ, + [SR_FAILX+SR_FAILY] = M_RXY | M_WXY, +}; + struct sr_raid6_opaque { int gn; void *pbuf; @@ -379,7 +414,7 @@ sr_raid6_rw(struct sr_workunit *wu) struct sr_discipline *sd = wu->swu_dis; struct scsi_xfer *xs = wu->swu_xs; struct sr_chunk *scp; - int s, fail, i; + int s, fail, i, rwmode; daddr64_t blk, lbaoffs, strip_no, chunk, qchunk, pchunk, fchunk; daddr64_t strip_size, no_chunk, lba, chunk_offs, phys_offs; daddr64_t strip_bits, length, strip_offs, datalen; @@ -397,6 +432,7 @@ sr_raid6_rw(struct sr_workunit *wu) datalen = xs->datalen; lbaoffs = blk << DEV_BSHIFT; + rwmode = (xs->flags & SCSI_DATA_IN) ? M_RFLG : M_WFLG; if (xs->flags & SCSI_DATA_OUT) /* create write workunit */ if ((wu_w = sr_wu_get(sd, 0)) == NULL) { |