initial import

internal commit: 0ab1ea615e5cfbb0687a9d593a86a7b774386076 Signed-off-by: Anthony Xu <anthony.xu@intel.com>
2025-09-16 06:19:24 +00:00 · 2018-03-07 21:01:19 +08:00
parent b966397914
commit bd31b1c53e
93 changed files with 37861 additions and 0 deletions
--- a/devicemodel/hw/pci/uart.c
+++ b/devicemodel/hw/pci/uart.c
@@ -0,0 +1,115 @@
+/*-
+ * Copyright (c) 2012 NetApp, Inc.
+ * 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 NETAPP, INC ``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 NETAPP, INC 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/cdefs.h>
+#include <sys/types.h>
+#include <stdio.h>
+
+#include "dm.h"
+#include "pci_core.h"
+#include "uart_core.h"
+
+/*
+ * Pick a PCI vid/did of a chip with a single uart at
+ * BAR0, that most versions of FreeBSD can understand:
+ * Siig CyberSerial 1-port.
+ */
+#define COM_VENDOR	0x131f
+#define COM_DEV		0x2000
+
+static void
+pci_uart_intr_assert(void *arg)
+{
+	struct pci_vdev *dev = arg;
+
+	pci_lintr_assert(dev);
+}
+
+static void
+pci_uart_intr_deassert(void *arg)
+{
+	struct pci_vdev *dev = arg;
+
+	pci_lintr_deassert(dev);
+}
+
+static void
+pci_uart_write(struct vmctx *ctx, int vcpu, struct pci_vdev *dev,
+	       int baridx, uint64_t offset, int size, uint64_t value)
+{
+	assert(baridx == 0);
+	assert(size == 1);
+
+	uart_write(dev->arg, offset, value);
+}
+
+uint64_t
+pci_uart_read(struct vmctx *ctx, int vcpu, struct pci_vdev *dev,
+	      int baridx, uint64_t offset, int size)
+{
+	uint8_t val;
+
+	assert(baridx == 0);
+	assert(size == 1);
+
+	val = uart_read(dev->arg, offset);
+	return val;
+}
+
+static int
+pci_uart_init(struct vmctx *ctx, struct pci_vdev *dev, char *opts)
+{
+	struct uart_vdev *uart;
+
+	pci_emul_alloc_bar(dev, 0, PCIBAR_IO, UART_IO_BAR_SIZE);
+	pci_lintr_request(dev);
+
+	/* initialize config space */
+	pci_set_cfgdata16(dev, PCIR_DEVICE, COM_DEV);
+	pci_set_cfgdata16(dev, PCIR_VENDOR, COM_VENDOR);
+	pci_set_cfgdata8(dev, PCIR_CLASS, PCIC_SIMPLECOMM);
+
+	uart = uart_init(pci_uart_intr_assert, pci_uart_intr_deassert, dev);
+	dev->arg = uart;
+
+	if (uart_set_backend(uart, opts) != 0) {
+		fprintf(stderr, "Unable to initialize backend '%s' for "
+		    "pci uart at %d:%d\n", opts, dev->slot, dev->func);
+		return -1;
+	}
+
+	return 0;
+}
+
+struct pci_vdev_ops pci_ops_com = {
+	.class_name	= "uart",
+	.vdev_init	= pci_uart_init,
+	.vdev_barwrite	= pci_uart_write,
+	.vdev_barread	= pci_uart_read
+};
+DEFINE_PCI_DEVTYPE(pci_ops_com);