[src/trunk]: src/sys/arch/sparc64/dev sun4v: vdsk and ldc drivers - from Open...

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

details:   https://anonhg.NetBSD.org/src/rev/6ff03a04f9c5
branches:  trunk
changeset: 347268:6ff03a04f9c5
user:      palle <palle%NetBSD.org@localhost>
date:      Fri Aug 19 19:40:27 2016 +0000

description:
sun4v: vdsk and ldc drivers - from OpenBSD, but heavily adapted to NetBSD scsipi - access to a virtual disk served from a ldom primary domain now works

diffstat:

 sys/arch/sparc64/dev/viovar.h |  128 ++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 128 insertions(+), 0 deletions(-)

diffs (132 lines):

diff -r 899df9e52121 -r 6ff03a04f9c5 sys/arch/sparc64/dev/viovar.h
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/sparc64/dev/viovar.h     Fri Aug 19 19:40:27 2016 +0000
@@ -0,0 +1,128 @@
+/*     $NetBSD: viovar.h,v 1.1 2016/08/19 19:40:27 palle Exp $ */
+/*     $OpenBSD: viovar.h,v 1.2 2009/01/12 19:52:39 kettenis Exp $     */
+/*
+ * Copyright (c) 2009 Mark Kettenis
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * Virtual IO device protocol.
+ */
+
+struct vio_msg_tag {
+       uint8_t         type;
+       uint8_t         stype;
+       uint16_t        stype_env;
+       uint32_t        sid;
+};
+
+struct vio_msg {
+       uint64_t        hdr;
+       uint8_t         type;
+       uint8_t         stype;
+       uint16_t        stype_env;
+       uint32_t        sid;
+       uint16_t        major;
+       uint16_t        minor;
+       uint8_t         dev_class;
+};
+
+/* Message types. */
+#define VIO_TYPE_CTRL          0x01
+#define VIO_TYPE_DATA          0x02
+#define VIO_TYPE_ERR           0x04
+
+/* Sub-Message types. */
+#define VIO_SUBTYPE_INFO       0x01
+#define VIO_SUBTYPE_ACK                0x02
+#define VIO_SUBTYPE_NACK       0x04
+
+/* Sub-Type envelopes. */
+#define VIO_VER_INFO           0x0001
+#define VIO_ATTR_INFO          0x0002
+#define VIO_DRING_REG          0x0003
+#define VIO_DRING_UNREG                0x0004
+#define VIO_RDX                        0x0005
+
+#define VIO_PKT_DATA           0x0040
+#define VIO_DESC_DATA          0x0041
+#define VIO_DRING_DATA         0x0042
+
+struct vio_ver_info {
+       struct vio_msg_tag      tag;
+       uint16_t                major;
+       uint16_t                minor;
+       uint8_t                 dev_class;
+       uint8_t                 _reserved1[3];
+       uint64_t                _reserved2[5];
+};
+
+/* Device types. */
+#define VDEV_NETWORK           0x01
+#define VDEV_NETWORK_SWITCH    0x02
+#define VDEV_DISK              0x03
+#define VDEV_DISK_SERVER       0x04
+
+struct vio_dring_reg {
+       struct vio_msg_tag      tag;
+       uint64_t                dring_ident;
+       uint32_t                num_descriptors;
+       uint32_t                descriptor_size;
+       uint16_t                options;
+       uint16_t                _reserved;
+       uint32_t                ncookies;
+       struct ldc_cookie       cookie[1];
+};
+
+/* Ring options. */
+#define VIO_TX_RING            0x0001
+#define VIO_RX_RING            0x0002
+
+/* Transfer modes. */
+#define VIO_PKT_MODE           0x01
+#define VIO_DESC_MODE          0x02
+#define VIO_DRING_MODE         0x03
+
+struct vio_dring_hdr {
+       uint8_t         dstate;
+       uint8_t         ack: 1;
+       uint16_t        _reserved[3];
+};
+
+/* Descriptor states. */
+#define VIO_DESC_FREE          0x01
+#define VIO_DESC_READY         0x02
+#define VIO_DESC_ACCEPTED      0x03
+#define VIO_DESC_DONE          0x04
+
+struct vio_dring_msg {
+       struct vio_msg_tag      tag;
+       uint64_t                seq_no;
+       uint64_t                dring_ident;
+       uint32_t                start_idx;
+       uint32_t                end_idx;
+       uint8_t                 proc_state;
+       uint8_t                 _reserved1[7];
+       uint64_t                _reserved2[2];
+};
+
+/* Ring states. */
+#define VIO_DP_ACTIVE  0x01
+#define VIO_DP_STOPPED 0x02
+
+struct vio_rdx {
+       struct vio_msg_tag      tag;
+       uint64_t                _reserved[6];
+};
+