Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

1 files changed, 212 insertions, 0 deletions

diff --git a/qemu/roms/openbios/drivers/usbohci_rh.c b/qemu/roms/openbios/drivers/usbohci_rh.c
new file mode 100644
index 000000000..55503be61
--- /dev/null
+++ b/qemu/roms/openbios/drivers/usbohci_rh.c
@@ -0,0 +1,212 @@
+/*
+ * Driver for USB OHCI Root Hubs ported from CoreBoot
+ *
+ * Copyright (C) 2014 BALATON Zoltan
+ *
+ * This file was part of the libpayload project.
+ *
+ * Copyright (C) 2010 Patrick Georgi
+ *
+ * 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.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * 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 "config.h"
+#include "timer.h"
+#include "usbohci_private.h"
+#include "usbohci.h"
+
+typedef struct {
+	int numports;
+	int *port;
+} rh_inst_t;
+
+#define RH_INST(dev) ((rh_inst_t*)(dev)->data)
+
+static void
+ohci_rh_enable_port (usbdev_t *dev, int port)
+{
+	/* Reset RH port should hold 50ms with pulses of at least 10ms and
+	 * gaps of at most 3ms (usb20 spec 7.1.7.5).
+	 * After reset, the port will be enabled automatically (ohci spec
+	 * 7.4.4).
+	 */
+	int total_delay = 100; /* 100 * 500us == 50ms */
+	while (total_delay > 0) {
+		if (!(READ_OPREG(OHCI_INST(dev->controller), HcRhPortStatus[port])
+					& CurrentConnectStatus))
+			return;
+
+		/* start reset */
+		OHCI_INST (dev->controller)->opreg->HcRhPortStatus[port] =
+			__cpu_to_le32(SetPortReset);
+		int timeout = 200; /* timeout after 200 * 500us == 100ms */
+		while ((READ_OPREG(OHCI_INST(dev->controller), HcRhPortStatus[port])
+					& PortResetStatus)
+				&& timeout--) {
+			udelay(500); total_delay--;
+		}
+		if (READ_OPREG(OHCI_INST(dev->controller), HcRhPortStatus[port])
+				& PortResetStatus) {
+			usb_debug("Warning: root-hub port reset timed out.\n");
+			break;
+		}
+		if ((200-timeout) < 20) {
+			usb_debug("Warning: port reset too short: %dms; "
+					"should be at least 10ms.\n",
+					(200-timeout)/2);
+                        total_delay = 0; /* can happen on QEMU */
+		}
+		/* clear reset status change */
+		OHCI_INST(dev->controller)->opreg->HcRhPortStatus[port] =
+			__cpu_to_le32(PortResetStatusChange);
+		usb_debug ("rh port reset finished after %dms.\n", (200-timeout)/2);
+	}
+}
+
+/* disable root hub */
+static void
+ohci_rh_disable_port (usbdev_t *dev, int port)
+{
+	OHCI_INST (dev->controller)->opreg->HcRhPortStatus[port] =
+		__cpu_to_le32(ClearPortEnable); // disable port
+	int timeout = 50; /* timeout after 50 * 100us == 5ms */
+	while ((READ_OPREG(OHCI_INST (dev->controller), HcRhPortStatus[port])
+				& PortEnableStatus)
+			&& timeout--) {
+		udelay(100);
+	}
+}
+
+static void
+ohci_rh_scanport (usbdev_t *dev, int port)
+{
+	if (port >= RH_INST(dev)->numports) {
+		usb_debug("Invalid port %d\n", port);
+		return;
+	}
+
+	/* device registered, and device change logged, so something must have happened */
+	if (RH_INST (dev)->port[port] != -1) {
+		usb_detach_device(dev->controller, RH_INST (dev)->port[port]);
+		RH_INST (dev)->port[port] = -1;
+	}
+
+	/* no device attached
+	   previously registered devices are detached, nothing left to do */
+	if (!(READ_OPREG(OHCI_INST(dev->controller), HcRhPortStatus[port]) & CurrentConnectStatus))
+		return;
+
+	// clear port state change
+	OHCI_INST(dev->controller)->opreg->HcRhPortStatus[port] = __cpu_to_le32(ConnectStatusChange);
+	ohci_rh_enable_port (dev, port);
+
+	mdelay(100); // wait for signal to stabilize
+
+	if (!(READ_OPREG(OHCI_INST(dev->controller), HcRhPortStatus[port]) & PortEnableStatus)) {
+		usb_debug ("port enable failed\n");
+		return;
+	}
+
+	int speed = (READ_OPREG(OHCI_INST(dev->controller), HcRhPortStatus[port]) & LowSpeedDeviceAttached) != 0;
+	RH_INST (dev)->port[port] = usb_attach_device(dev->controller, dev->address, port, speed);
+}
+
+static int
+ohci_rh_report_port_changes (usbdev_t *dev)
+{
+	ohci_t *const ohcic = OHCI_INST (dev->controller);
+
+	int i;
+
+	for (i = 0; i < RH_INST(dev)->numports; i++) {
+		// maybe detach+attach happened between two scans?
+		if (READ_OPREG(ohcic, HcRhPortStatus[i]) & ConnectStatusChange) {
+			ohcic->opreg->HcRhPortStatus[i] = __cpu_to_le32(ConnectStatusChange);
+			usb_debug("attachment change on port %d\n", i);
+			return i;
+		}
+	}
+
+	// no change
+	return -1;
+}
+
+static void
+ohci_rh_destroy (usbdev_t *dev)
+{
+	int i;
+	for (i = 0; i < RH_INST (dev)->numports; i++)
+		ohci_rh_disable_port (dev, i);
+	free (RH_INST (dev));
+}
+
+static void
+ohci_rh_poll (usbdev_t *dev)
+{
+	ohci_t *const ohcic = OHCI_INST (dev->controller);
+
+	int port;
+
+	/* Check if anything changed. */
+	if (!(READ_OPREG(ohcic, HcInterruptStatus) & RootHubStatusChange))
+		return;
+	ohcic->opreg->HcInterruptStatus = __cpu_to_le32(RootHubStatusChange);
+	usb_debug("root hub status change\n");
+
+	/* Scan ports with changed connection status. */
+	while ((port = ohci_rh_report_port_changes (dev)) != -1)
+		ohci_rh_scanport (dev, port);
+}
+
+void
+ohci_rh_init (usbdev_t *dev)
+{
+	int i;
+
+	dev->destroy = ohci_rh_destroy;
+	dev->poll = ohci_rh_poll;
+
+	dev->data = malloc (sizeof (rh_inst_t));
+	if (!dev->data) {
+		printk("Not enough memory for OHCI RH.\n");
+		return;
+	}
+
+	RH_INST (dev)->numports = READ_OPREG(OHCI_INST(dev->controller), HcRhDescriptorA) & NumberDownstreamPortsMask;
+	RH_INST (dev)->port = malloc(sizeof(int) * RH_INST (dev)->numports);
+	usb_debug("%d ports registered\n", RH_INST (dev)->numports);
+
+	for (i = 0; i < RH_INST (dev)->numports; i++) {
+		ohci_rh_enable_port (dev, i);
+		RH_INST (dev)->port[i] = -1;
+	}
+
+	/* we can set them here because a root hub _really_ shouldn't
+	   appear elsewhere */
+	dev->address = 0;
+	dev->hub = -1;
+	dev->port = -1;
+
+	usb_debug("rh init done\n");
+}