socsvn commit: r307220 - soc2016/vincenzo/head/usr.sbin/bhyve

[vincenzo at FreeBSD.org]

Author: vincenzo
Date: Fri Aug  5 13:55:46 2016
New Revision: 307220
URL: http://svnweb.FreeBSD.org/socsvn/?view=rev&rev=307220

Log:
  ptnet: add PCI device stub

Added:
  soc2016/vincenzo/head/usr.sbin/bhyve/pci_ptnetmap_netif.c
Modified:
  soc2016/vincenzo/head/usr.sbin/bhyve/Makefile

Modified: soc2016/vincenzo/head/usr.sbin/bhyve/Makefile
==============================================================================
--- soc2016/vincenzo/head/usr.sbin/bhyve/Makefile	Fri Aug  5 13:54:55 2016	(r307219)
+++ soc2016/vincenzo/head/usr.sbin/bhyve/Makefile	Fri Aug  5 13:55:46 2016	(r307220)
@@ -33,6 +33,7 @@
 	pci_lpc.c		\
 	pci_passthru.c		\
 	pci_ptnetmap_memdev.c	\
+	pci_ptnetmap_netif.c	\
 	pci_virtio_block.c	\
 	pci_virtio_net.c	\
 	pci_virtio_rnd.c	\

Added: soc2016/vincenzo/head/usr.sbin/bhyve/pci_ptnetmap_netif.c
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ soc2016/vincenzo/head/usr.sbin/bhyve/pci_ptnetmap_netif.c	Fri Aug  5 13:55:46 2016	(r307220)
@@ -0,0 +1,130 @@
+/*
+ * Copyright (C) 2016 Vincenzo Maffione
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+#include <net/if.h>	/* IFNAMSIZ */
+#include <net/netmap.h>
+#include <dev/netmap/netmap_virt.h>
+
+#include <machine/vmm.h>
+#include <vmmapi.h>
+
+#include "bhyverun.h"
+#include "pci_emul.h"
+
+#ifndef PTNET_CSB_ALLOC
+#error "Hypervisor-allocated CSB not supported"
+#endif
+
+
+struct ptnet_softc {
+	struct pci_devinst *pi;		/* PCI device instance */
+};
+
+static uint64_t
+ptnet_bar_read(struct vmctx *ctx, int vcpu, struct pci_devinst *pi,
+	       int baridx, uint64_t offset, int size)
+{
+	struct ptnet_softc *sc = pi->pi_arg;
+
+	if (sc == NULL)
+		return 0;
+
+	if (baridx == PTNETMAP_IO_PCI_BAR) {
+		switch (offset) {
+		}
+	}
+
+	printf("%s: Unexpected register read [bar %u, offset %lx size %d]\n",
+		__func__, baridx, offset, size);
+
+	return 0;
+}
+
+static void
+ptnet_bar_write(struct vmctx *ctx, int vcpu, struct pci_devinst *pi,
+	      int baridx, uint64_t offset, int size, uint64_t value)
+{
+	struct ptnet_softc *sc = pi->pi_arg;
+
+	if (sc == NULL)
+		return;
+
+	printf("%s: Unexpected register write [bar %u, offset %lx size %d "
+	       "value %lx]\n", __func__, baridx, offset, size, value);
+}
+
+/* PCI device initialization. */
+static int
+ptnet_init(struct vmctx *ctx, struct pci_devinst *pi, char *opts)
+{
+	struct ptnet_softc *sc;
+	int ret;
+
+	sc = calloc(1, sizeof(*sc));
+	if (sc == NULL) {
+		fprintf(stderr, "%s: out of memory\n", __func__);
+		return -1;
+	}
+
+	/* Link our softc in the pci_devinst. */
+	pi->pi_arg = sc;
+	sc->pi = pi;
+
+	/* Initialize PCI configuration space. */
+	pci_set_cfgdata16(pi, PCIR_VENDOR, PTNETMAP_PCI_VENDOR_ID);
+	pci_set_cfgdata16(pi, PCIR_DEVICE, PTNETMAP_PCI_NETIF_ID);
+	pci_set_cfgdata8(pi, PCIR_CLASS, PCIC_NETWORK);
+	pci_set_cfgdata8(pi, PCIR_SUBCLASS, PCIS_NETWORK_ETHERNET);
+	pci_set_cfgdata16(pi, PCIR_SUBDEV_0, 1);
+	pci_set_cfgdata16(pi, PCIR_SUBVEND_0, PTNETMAP_PCI_VENDOR_ID);
+
+	/* Allocate a BAR for an I/O region. */
+	ret = pci_emul_alloc_bar(pi, PTNETMAP_IO_PCI_BAR, PCIBAR_IO,
+				 PTNET_IO_MASK + 1);
+	if (ret) {
+		fprintf(stderr, "%s: failed to allocate BAR [%d]\n",
+			__func__, ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+struct pci_devemu pci_de_ptnet = {
+	.pe_emu = 	"ptnet",
+	.pe_init =	ptnet_init,
+	.pe_barwrite =	ptnet_bar_write,
+	.pe_barread =	ptnet_bar_read,
+};
+PCI_EMUL_SET(pci_de_ptnet);