[src/jdolecek-ncq]: src/sys/dev/ata probe for NCQ and WRITE DMA FUA EXT support

[jdolecek <jdolecek%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/88ca4e799f60
branches:  jdolecek-ncq
changeset: 352626:88ca4e799f60
user:      jdolecek <jdolecek%NetBSD.org@localhost>
date:      Sat Apr 15 18:02:09 2017 +0000

description:
probe for NCQ and WRITE DMA FUA EXT support

diffstat:

 sys/dev/ata/wd.c    |  31 +++++++++++++++++++++++++++++--
 sys/dev/ata/wdvar.h |   4 +++-
 2 files changed, 32 insertions(+), 3 deletions(-)

diffs (70 lines):

diff -r f066562aba11 -r 88ca4e799f60 sys/dev/ata/wd.c
--- a/sys/dev/ata/wd.c  Sat Apr 15 17:14:11 2017 +0000
+++ b/sys/dev/ata/wd.c  Sat Apr 15 18:02:09 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: wd.c,v 1.428.2.4 2017/04/15 17:14:11 jdolecek Exp $ */
+/*     $NetBSD: wd.c,v 1.428.2.5 2017/04/15 18:02:09 jdolecek Exp $ */
 
 /*
  * Copyright (c) 1998, 2001 Manuel Bouyer.  All rights reserved.
@@ -54,7 +54,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: wd.c,v 1.428.2.4 2017/04/15 17:14:11 jdolecek Exp $");
+__KERNEL_RCSID(0, "$NetBSD: wd.c,v 1.428.2.5 2017/04/15 18:02:09 jdolecek Exp $");
 
 #include "opt_ata.h"
 
@@ -425,6 +425,33 @@
                aprint_normal_dev(self, "WARNING: block size %u "
                    "might not actually work\n", wd->sc_blksize);
        }
+
+       /*
+        * Probe WRITE DMA FUA EXT. Support is mandatory for devices
+        * supporting LBA48, but nevertheless confirm with the feature flag.
+        */
+       if (wd->sc_flags & WDF_LBA48
+           && (wd->sc_params.atap_cmd_def & ATA_CMDE_WFE)) {
+               wd->sc_flags |= WDF_WFUA;
+       }
+
+       /* Probe NCQ support - READ/WRITE FPDMA QUEUED command support */
+       uint8_t max_depth = 1;
+       if (wd->sc_params.atap_sata_caps & SATA_NATIVE_CMDQ) {
+               wd->sc_flags |= WDF_NCQ;
+
+               max_depth = (wd->sc_params.atap_queuedepth & 0x0f) + 1;
+
+               /* XXX adjust adev_openings */
+       }
+
+       aprint_verbose_dev(self,
+           "drive supports %sFUA, %sNCQ (queue depth max %d, used %u)\n",
+           (wd->sc_flags & (WDF_WFUA|WDF_NCQ)) ? "" : "no ",
+           (wd->sc_flags & WDF_NCQ) ? "" : "no ",
+           max_depth, adev->adev_openings);
+
+
 out:
        /*
         * Initialize and attach the disk structure.
diff -r f066562aba11 -r 88ca4e799f60 sys/dev/ata/wdvar.h
--- a/sys/dev/ata/wdvar.h       Sat Apr 15 17:14:11 2017 +0000
+++ b/sys/dev/ata/wdvar.h       Sat Apr 15 18:02:09 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: wdvar.h,v 1.43.4.2 2017/04/15 12:01:23 jdolecek Exp $  */
+/*     $NetBSD: wdvar.h,v 1.43.4.3 2017/04/15 18:02:09 jdolecek Exp $  */
 
 /*
  * Copyright (c) 1998, 2001 Manuel Bouyer.
@@ -58,6 +58,8 @@
 #define WDF_LBA                0x040 /* using LBA mode */
 #define WDF_KLABEL     0x080 /* retain label after 'full' close */
 #define WDF_LBA48      0x100 /* using 48-bit LBA mode */
+#define WDF_WFUA       0x200 /* supports FUA via WRITE DMA FUA EXT */
+#define WDF_NCQ                0x400 /* supports NCQ feature set */
        uint64_t sc_capacity; /* full capacity of the device */
        uint64_t sc_capacity512; /* ... in DEV_BSIZE blocks */
        uint32_t sc_capacity28; /* capacity accessible with LBA28 commands */