diff options
| author | Bryan Steele <brynet@cvs.openbsd.org> | 2015-03-12 14:24:03 +0000 |
|---|---|---|
| committer | Bryan Steele <brynet@cvs.openbsd.org> | 2015-03-12 14:24:03 +0000 |
| commit | 451cd5fd7bc6103e8566798f90dcdc754287e8f5 (patch) | |
| tree | 7250a8f5b489df6db95e8de74b69394e5e1e88df | |
| parent | a3a1602d9261b32d9d51f14fc9fed06e76f4c3c7 (diff) | |
Print the current link speed for SATA devices attached on ahci(4).
The port numbers correspond to scsibus(4) targets:
ahci0: port 0, at 6Gbps
ahci0: port 2, at 3Gbps
scsibus1 at ahci0: 32 targets
sd0 at scsibus1 targ 0 ..
sd1 at scsibus1 targ 2 ..
ok deraadt@, tested by bmercer@
| -rw-r--r-- | sys/dev/ic/ahci.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/sys/dev/ic/ahci.c b/sys/dev/ic/ahci.c index fb36dd3bbfc..558a4d6d4ad 100644 --- a/sys/dev/ic/ahci.c +++ b/sys/dev/ic/ahci.c @@ -1,4 +1,4 @@ -/* $OpenBSD: ahci.c,v 1.19 2015/02/11 07:13:44 jmatthew Exp $ */ +/* $OpenBSD: ahci.c,v 1.20 2015/03/12 14:24:02 brynet Exp $ */ /* * Copyright (c) 2006 David Gwynne <dlg@openbsd.org> @@ -641,6 +641,25 @@ nomem: DPRINTF(AHCI_D_VERBOSE, "%s: detected device on port %d; %d\n", DEVNAME(sc), port, rc); + /* Read current link speed */ + const char *speed; + switch(ahci_pread(ap, AHCI_PREG_SSTS) & AHCI_PREG_SSTS_SPD) { + case AHCI_PREG_SSTS_SPD_GEN1: + speed = "1.5Gbps"; + break; + case AHCI_PREG_SSTS_SPD_GEN2: + speed = "3Gbps"; + break; + case AHCI_PREG_SSTS_SPD_GEN3: + speed = "6Gbps"; + break; + default: + speed = NULL; + break; + } + if (speed != NULL) + printf("%s: port %d, at %s\n", PORTNAME(ap), port, speed); + /* Enable command transfers on port */ if (ahci_port_start(ap, 0)) { printf("%s: failed to start command DMA on port %d, " |