Merge virtio changes from projects/virtio

Contains projects/virtio commits:

r245738:
    virtio: Minor man page tweaks
r246060:
    virtio: Cleanup feature description printing
r246306:
    virtio: Remove old debugging flag
r247238:
    virtio: Remove PRIx64 macros from format strings
r247239:
    virtio: Constify some fields
r247240:
    virtio: Minor code simplifications
r249962:
    virtio: Update to my freebsd.org email address

MFC after:	1 month

share/man/man4/virtio.4

@@ -53,10 +53,10 @@ This emulation is often inefficient.
 .Pp
 VirtIO defines an interface for efficient I/O between the hypervisor and VM.
 The
-.Xr virtio 4
+.Nm
 module provides a shared memory transport called a virtqueue.
 The
-.Xr virtio_pci 4
+.Xr virtio_pci
 device driver represents an emulated PCI device that the hypervisor makes
 available to the VM.
 This device provides the probing, configuration, and
@@ -94,4 +94,4 @@ Support for VirtIO first appeared in
 .An -nosplit
 .Fx
 support for VirtIO was first added by
-.An Bryan Venteicher Aq bryanv@daemoninthecloset.org .
+.An Bryan Venteicher Aq bryanv@FreeBSD.org .

share/man/man4/virtio_balloon.4

@@ -59,6 +59,6 @@ The hypervisor can later signal the balloon to return the memory.
 The
 .Nm
 driver was written by
-.An Bryan Venteicher Aq bryanv@daemoninthecloset.org .
+.An Bryan Venteicher Aq bryanv@FreeBSD.org .
 It first appeared in
 .Fx 9.0 .

share/man/man4/virtio_blk.4

@@ -87,6 +87,6 @@ be toggled between writethrough and writeback.
 The
 .Nm
 driver was written by
-.An Bryan Venteicher Aq bryanv@daemoninthecloset.org .
+.An Bryan Venteicher Aq bryanv@FreeBSD.org .
 It first appeared in
 .Fx 9.0 .

share/man/man4/virtio_scsi.4

@@ -87,6 +87,6 @@ Enable tracing prints.
 The
 .Nm
 driver was written by
-.An Bryan Venteicher Aq bryanv@daemoninthecloset.org .
+.An Bryan Venteicher Aq bryanv@FreeBSD.org .
 It first appeared in
 .Fx 10.0 .

share/man/man4/vtnet.4

@@ -89,7 +89,7 @@ The default value is 0.
 The
 .Nm
 driver was written by
-.An Bryan Venteicher Aq bryanv@daemoninthecloset.org .
+.An Bryan Venteicher Aq bryanv@FreeBSD.org .
 It first appeared in
 .Fx 9.0 .
 .Sh CAVEATS

sys/dev/virtio/balloon/virtio_balloon.c

@@ -1,5 +1,5 @@
 /*-
- * Copyright (c) 2011, Bryan Venteicher <bryanv@daemoninthecloset.org>
+ * Copyright (c) 2011, Bryan Venteicher <bryanv@FreeBSD.org>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without

sys/dev/virtio/block/virtio_blk.c

@@ -1,5 +1,5 @@
 /*-
- * Copyright (c) 2011, Bryan Venteicher <bryanv@daemoninthecloset.org>
+ * Copyright (c) 2011, Bryan Venteicher <bryanv@FreeBSD.org>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without

sys/dev/virtio/network/if_vtnet.c

@@ -1,5 +1,5 @@
 /*-
- * Copyright (c) 2011, Bryan Venteicher <bryanv@daemoninthecloset.org>
+ * Copyright (c) 2011, Bryan Venteicher <bryanv@FreeBSD.org>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without

sys/dev/virtio/network/if_vtnetvar.h

@@ -1,5 +1,5 @@
 /*-
- * Copyright (c) 2011, Bryan Venteicher <bryanv@daemoninthecloset.org>
+ * Copyright (c) 2011, Bryan Venteicher <bryanv@FreeBSD.org>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without

sys/dev/virtio/pci/virtio_pci.c

@@ -1,5 +1,5 @@
 /*-
- * Copyright (c) 2011, Bryan Venteicher <bryanv@daemoninthecloset.org>
+ * Copyright (c) 2011, Bryan Venteicher <bryanv@FreeBSD.org>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -487,9 +487,6 @@ vtpci_alloc_virtqueues(device_t dev, int flags, int nvqs,
 	if (nvqs <= 0 || nvqs > VIRTIO_MAX_VIRTQUEUES)
 		return (EINVAL);
 
-	if (flags & VIRTIO_ALLOC_VQS_DISABLE_MSIX)
-		sc->vtpci_flags |= VTPCI_FLAG_NO_MSIX;
-
 	for (idx = 0; idx < nvqs; idx++) {
 		vqx = &sc->vtpci_vqx[idx];
 		info = &vq_info[idx];

sys/dev/virtio/scsi/virtio_scsi.c

@@ -1,5 +1,5 @@
 /*-
- * Copyright (c) 2012, Bryan Venteicher <bryanv@daemoninthecloset.org>
+ * Copyright (c) 2012, Bryan Venteicher <bryanv@FreeBSD.org>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without

sys/dev/virtio/scsi/virtio_scsivar.h

@@ -1,5 +1,5 @@
 /*-
- * Copyright (c) 2012, Bryan Venteicher <bryanv@daemoninthecloset.org>
+ * Copyright (c) 2012, Bryan Venteicher <bryanv@FreeBSD.org>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without

sys/dev/virtio/virtio.c

@@ -1,5 +1,5 @@
 /*-
- * Copyright (c) 2011, Bryan Venteicher <bryanv@daemoninthecloset.org>
+ * Copyright (c) 2011, Bryan Venteicher <bryanv@FreeBSD.org>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -36,7 +36,6 @@ __FBSDID("$FreeBSD$");
 
 #include <machine/bus.h>
 #include <machine/resource.h>
-#include <machine/_inttypes.h>
 #include <sys/bus.h>
 #include <sys/rman.h>
 
@@ -49,8 +48,8 @@ static int virtio_modevent(module_t, int, void *);
 static const char *virtio_feature_name(uint64_t, struct virtio_feature_desc *);
 
 static struct virtio_ident {
-	uint16_t devid;
-	char	*name;
+	uint16_t	devid;
+	const char	*name;
 } virtio_ident_table[] = {
 	{ VIRTIO_ID_NETWORK,	"Network"	},
 	{ VIRTIO_ID_BLOCK,	"Block"		},
@@ -87,9 +86,29 @@ virtio_device_name(uint16_t devid)
 	return (NULL);
 }
 
+static const char *
+virtio_feature_name(uint64_t val, struct virtio_feature_desc *desc)
+{
+	int i, j;
+	struct virtio_feature_desc *descs[2] = { desc,
+	    virtio_common_feature_desc };
+
+	for (i = 0; i < 2; i++) {
+		if (descs[i] == NULL)
+			continue;
+
+		for (j = 0; descs[i][j].vfd_val != 0; j++) {
+			if (val == descs[i][j].vfd_val)
+				return (descs[i][j].vfd_str);
+		}
+	}
+
+	return (NULL);
+}
+
 void
 virtio_describe(device_t dev, const char *msg,
-    uint64_t features, struct virtio_feature_desc *feature_desc)
+    uint64_t features, struct virtio_feature_desc *desc)
 {
 	struct sbuf sb;
 	uint64_t val;
@@ -98,13 +117,12 @@ virtio_describe(device_t dev, const char *msg,
 	int n;
 
 	if ((buf = malloc(512, M_TEMP, M_NOWAIT)) == NULL) {
-		device_printf(dev, "%s features: 0x%"PRIx64"\n", msg,
-		    features);
+		device_printf(dev, "%s features: %#jx\n", msg, (uintmax_t) features);
 		return;
 	}
 
 	sbuf_new(&sb, buf, 512, SBUF_FIXEDLEN);
-	sbuf_printf(&sb, "%s features: 0x%"PRIx64, msg, features);
+	sbuf_printf(&sb, "%s features: %#jx", msg, (uintmax_t) features);
 
 	for (n = 0, val = 1ULL << 63; val != 0; val >>= 1) {
 		/*
@@ -119,15 +137,9 @@ virtio_describe(device_t dev, const char *msg,
 		else
 			sbuf_cat(&sb, ",");
 
-		name = NULL;
-		if (feature_desc != NULL)
-			name = virtio_feature_name(val, feature_desc);
+		name = virtio_feature_name(val, desc);
 		if (name == NULL)
-			name = virtio_feature_name(val,
-			    virtio_common_feature_desc);
-
-		if (name == NULL)
-			sbuf_printf(&sb, "0x%"PRIx64, val);
+			sbuf_printf(&sb, "%#jx", (uintmax_t) val);
 		else
 			sbuf_cat(&sb, name);
 	}
@@ -147,18 +159,6 @@ virtio_describe(device_t dev, const char *msg,
 	free(buf, M_TEMP);
 }
 
-static const char *
-virtio_feature_name(uint64_t val, struct virtio_feature_desc *feature_desc)
-{
-	int i;
-
-	for (i = 0; feature_desc[i].vfd_val != 0; i++)
-		if (val == feature_desc[i].vfd_val)
-			return (feature_desc[i].vfd_str);
-
-	return (NULL);
-}
-
 /*
  * VirtIO bus method wrappers.
  */
@@ -251,13 +251,12 @@ virtio_modevent(module_t mod, int type, void *unused)
 {
 	int error;
 
-	error = 0;
-
 	switch (type) {
 	case MOD_LOAD:
 	case MOD_QUIESCE:
 	case MOD_UNLOAD:
 	case MOD_SHUTDOWN:
+		error = 0;
 		break;
 	default:
 		error = EOPNOTSUPP;

sys/dev/virtio/virtio.h

@@ -99,7 +99,7 @@ struct vq_alloc_info;
 
 struct virtio_feature_desc {
 	uint64_t	 vfd_val;
-	char		*vfd_str;
+	const char	*vfd_str;
 };
 
 const char *virtio_device_name(uint16_t devid);

sys/dev/virtio/virtio_bus_if.m

@@ -1,5 +1,5 @@
 #-
-# Copyright (c) 2011, Bryan Venteicher <bryanv@daemoninthecloset.org>
+# Copyright (c) 2011, Bryan Venteicher <bryanv@FreeBSD.org>
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
@@ -50,9 +50,6 @@ METHOD int alloc_virtqueues {
 	int		nvqs;
 	struct vq_alloc_info *info;
 };
-HEADER {
-#define VIRTIO_ALLOC_VQS_DISABLE_MSIX 0x1
-};
 
 METHOD int setup_intr {
 	device_t	dev;

sys/dev/virtio/virtio_if.m

@@ -1,5 +1,5 @@
 #-
-# Copyright (c) 2011, Bryan Venteicher <bryanv@daemoninthecloset.org>
+# Copyright (c) 2011, Bryan Venteicher <bryanv@FreeBSD.org>
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without

sys/dev/virtio/virtqueue.c

@@ -1,5 +1,5 @@
 /*-
- * Copyright (c) 2011, Bryan Venteicher <bryanv@daemoninthecloset.org>
+ * Copyright (c) 2011, Bryan Venteicher <bryanv@FreeBSD.org>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without

sys/dev/virtio/virtqueue.h

@@ -1,5 +1,5 @@
 /*-
- * Copyright (c) 2011, Bryan Venteicher <bryanv@daemoninthecloset.org>
+ * Copyright (c) 2011, Bryan Venteicher <bryanv@FreeBSD.org>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without