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From: Roger Pau Monne <roger.pau@citrix.com>
To: xen-devel@lists.xenproject.org
Cc: Wei Liu <wei.liu2@citrix.com>,
	Ian Jackson <ian.jackson@eu.citrix.com>,
	Roger Pau Monne <roger.pau@citrix.com>
Subject: [PATCH v3 6/8] libxl: add a FreeBSD implementation of libxl__devid_to_localdev
Date: Thu, 31 Mar 2016 17:09:37 +0200	[thread overview]
Message-ID: <1459436979-7475-7-git-send-email-roger.pau@citrix.com> (raw)
In-Reply-To: <1459436979-7475-1-git-send-email-roger.pau@citrix.com>

This code is extracted from the FreeBSD blkfront implementation.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
---
Cc: Ian Jackson <ian.jackson@eu.citrix.com>
Cc: Wei Liu <wei.liu2@citrix.com>
---
 tools/libxl/libxl_freebsd.c | 54 +++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 52 insertions(+), 2 deletions(-)

diff --git a/tools/libxl/libxl_freebsd.c b/tools/libxl/libxl_freebsd.c
index e86e28c..c527455 100644
--- a/tools/libxl/libxl_freebsd.c
+++ b/tools/libxl/libxl_freebsd.c
@@ -27,8 +27,58 @@ int libxl__try_phy_backend(mode_t st_mode)
 
 char *libxl__devid_to_localdev(libxl__gc *gc, int devid)
 {
-    /* TODO */
-    return NULL;
+    /* This translation table has been copied from the FreeBSD blkfront code. */
+    const static struct vdev_info {
+        int major;
+        int shift;
+        int base;
+        const char *name;
+    } info[] = {
+        {3,     6,  0,      "ada"}, /* ide0 */
+        {22,    6,  2,      "ada"}, /* ide1 */
+        {33,    6,  4,      "ada"}, /* ide2 */
+        {34,    6,  6,      "ada"}, /* ide3 */
+        {56,    6,  8,      "ada"}, /* ide4 */
+        {57,    6,  10,     "ada"}, /* ide5 */
+        {88,    6,  12,     "ada"}, /* ide6 */
+        {89,    6,  14,     "ada"}, /* ide7 */
+        {90,    6,  16,     "ada"}, /* ide8 */
+        {91,    6,  18,     "ada"}, /* ide9 */
+
+        {8,     4,  0,      "da"},  /* scsi disk0 */
+        {65,    4,  16,     "da"},  /* scsi disk1 */
+        {66,    4,  32,     "da"},  /* scsi disk2 */
+        {67,    4,  48,     "da"},  /* scsi disk3 */
+        {68,    4,  64,     "da"},  /* scsi disk4 */
+        {69,    4,  80,     "da"},  /* scsi disk5 */
+        {70,    4,  96,     "da"},  /* scsi disk6 */
+        {71,    4,  112,    "da"},  /* scsi disk7 */
+        {128,   4,  128,    "da"},  /* scsi disk8 */
+        {129,   4,  144,    "da"},  /* scsi disk9 */
+        {130,   4,  160,    "da"},  /* scsi disk10 */
+        {131,   4,  176,    "da"},  /* scsi disk11 */
+        {132,   4,  192,    "da"},  /* scsi disk12 */
+        {133,   4,  208,    "da"},  /* scsi disk13 */
+        {134,   4,  224,    "da"},  /* scsi disk14 */
+        {135,   4,  240,    "da"},  /* scsi disk15 */
+
+        {202,   4,  0,      "xbd"}, /* xbd */
+
+        {0, 0,  0,  NULL},
+    };
+    int major = devid >> 8;
+    int minor = devid & 0xff;
+    int i;
+
+    if (devid & (1 << 28))
+        return GCSPRINTF("%s%d", "xbd", (devid & ((1 << 28) - 1)) >> 8);
+
+    for (i = 0; info[i].major; i++)
+        if (info[i].major == major)
+            return GCSPRINTF("%s%d", info[i].name,
+                             info[i].base + (minor >> info[i].shift));
+
+    return GCSPRINTF("%s%d", "xbd", minor >> 4);
 }
 
 /* Hotplug scripts caller functions */
-- 
2.6.4 (Apple Git-63)


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  parent reply	other threads:[~2016-03-31 15:11 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-31 15:09 [PATCH v3 0/8] libxl: add support for FreeBSD block hotplug scripts Roger Pau Monne
2016-03-31 15:09 ` [PATCH v3 1/8] blkif: document how FreeBSD uses the physical-device backend node Roger Pau Monne
2016-03-31 16:19   ` George Dunlap
2016-04-06 14:44   ` Ian Jackson
2016-03-31 15:09 ` [PATCH v3 2/8] hotplug/FreeBSD: add block hotplug script Roger Pau Monne
2016-03-31 15:09 ` [PATCH v3 3/8] libxl: refactor the FreeBSD hotplug script code Roger Pau Monne
2016-04-06 14:45   ` Ian Jackson
2016-03-31 15:09 ` [PATCH v3 4/8] libxl: add support for disk hotplug scripts on FreeBSD Roger Pau Monne
2016-04-01 14:07   ` Ian Jackson
2016-03-31 15:09 ` [PATCH v3 5/8] libxl: properly use vdev vs local device Roger Pau Monne
2016-03-31 15:09 ` Roger Pau Monne [this message]
2016-03-31 15:09 ` [PATCH v3 7/8] libxl: fix error message in local_device_attach_cb Roger Pau Monne
2016-03-31 15:09 ` [PATCH v3 8/8] hotplug/FreeBSD: document disk hotplug interface Roger Pau Monne
2016-03-31 16:38   ` George Dunlap
2016-03-31 15:47 ` [PATCH v3 0/8] libxl: add support for FreeBSD block hotplug scripts George Dunlap
2016-03-31 16:22   ` Roger Pau Monné
2016-04-06 14:47 ` Ian Jackson

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