released 0.8.7 (new MMU layout, m5484LITE board working again)

BaS_gcc/usb/usb_hub.c

@@ -0,0 +1,630 @@
+/*
+ * HUB "Driver"
+ * Probes device for being a hub and configure it
+ */
+
+#include <stdint.h>
+#include "bas_string.h"
+#include "bas_printf.h"
+#include "util.h"				/* for byte swap funcs */
+#include "wait.h"
+#include <stdarg.h>
+#include "usb.h"
+#include "usb_hub.h"
+
+#define DEBUG_HUB
+#ifdef DEBUG_HUB
+#define dbg(format, arg...) do { xprintf("DEBUG: %s(): " format, __FUNCTION__, ##arg); } while (0)
+#else
+#define dbg(format, arg...) do { ; } while (0)
+#endif /* DEBUG_HUB */
+#define err(format, arg...) do { xprintf("DEBUG: %s(): " format, __FUNCTION__, ##arg); } while (0)
+#define info(format, arg...) do { xprintf("DEBUG: %s(): " format, __FUNCTION__, ##arg); } while (0)
+
+static struct usb_hub_device hub_dev[USB_MAX_BUS][USB_MAX_HUB];
+static int usb_hub_index[USB_MAX_BUS];
+
+int usb_get_hub_descriptor(struct usb_device *dev, void *data, int size)
+{
+    return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+     USB_REQ_GET_DESCRIPTOR, USB_DIR_IN | USB_RT_HUB, USB_DT_HUB << 8, 0, data, size, USB_CNTL_TIMEOUT);
+}
+
+int usb_clear_hub_feature(struct usb_device *dev, int feature)
+{
+    return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+     USB_REQ_CLEAR_FEATURE, USB_RT_HUB, feature, 0, NULL, 0, USB_CNTL_TIMEOUT);
+}
+
+int usb_clear_port_feature(struct usb_device *dev, int port, int feature)
+{
+    return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+     USB_REQ_CLEAR_FEATURE, USB_RT_PORT, feature,	port, NULL, 0, USB_CNTL_TIMEOUT);
+}
+
+int usb_set_port_feature(struct usb_device *dev, int port, int feature)
+{
+    return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+     USB_REQ_SET_FEATURE, USB_RT_PORT, feature,	port, NULL, 0, USB_CNTL_TIMEOUT);
+}
+
+int usb_get_hub_status(struct usb_device *dev, void *data)
+{
+    return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+     USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_HUB, 0, 0, data, sizeof(struct usb_hub_status), USB_CNTL_TIMEOUT);
+}
+
+int usb_get_port_status(struct usb_device *dev, int port, void *data)
+{
+    return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+     USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_PORT, 0, port, data, sizeof(struct usb_hub_status), USB_CNTL_TIMEOUT);
+}
+
+static void usb_hub_power_on(struct usb_hub_device *hub)
+{
+    int i;
+    struct usb_device *dev;
+
+    dev = hub->pusb_dev;
+    /* Enable power to the ports */
+    dbg("enabling power on all ports\r\n");
+    for (i = 0; i < dev->maxchild; i++)
+    {
+        usb_set_port_feature(dev, i + 1, USB_PORT_FEAT_POWER);
+        dbg("port %d returns %lx\r\n", i + 1, dev->status);
+        wait(hub->desc.bPwrOn2PwrGood * 2 * 1000);
+    }
+}
+
+void usb_hub_reset(int bus_index)
+{
+    usb_hub_index[bus_index] = 0;
+}
+
+struct usb_hub_device *usb_hub_allocate(void)
+{
+    if (usb_hub_index[bus_index] < USB_MAX_HUB)
+    {
+        return &hub_dev[bus_index][usb_hub_index[bus_index]++];
+    }
+
+    dbg("ERROR: USB_MAX_HUB (%d) reached\r\n", USB_MAX_HUB);
+
+    return NULL;
+}
+
+#define MAX_TRIES 5
+
+static inline char *portspeed(int portstatus)
+{
+    if (portstatus & (1 << USB_PORT_FEAT_HIGHSPEED))
+    {
+        return "480 Mb/s";
+    }
+    else if (portstatus & (1 << USB_PORT_FEAT_LOWSPEED))
+    {
+        return "1.5 Mb/s";
+    }
+    else
+    {
+        return "12 Mb/s";
+    }
+}
+
+int hub_port_reset(struct usb_device *dev, int port, unsigned short *portstat)
+{
+    int tries;
+    struct usb_port_status portsts;
+    unsigned short portstatus, portchange;
+
+    dbg("");
+    dbg("hub_port_reset: resetting port %d...\r\n", port + 1);
+
+    for (tries = 0; tries < MAX_TRIES; tries++)
+    {
+        usb_set_port_feature(dev, port + 1, USB_PORT_FEAT_RESET);
+
+#ifdef USB_POLL_HUB
+        if (pxCurrentTCB != NULL)
+            vTaskDelay((200 * configTICK_RATE_HZ) / 1000);
+        else
+#endif
+            wait(10 * 1000);
+        if (usb_get_port_status(dev, port + 1, &portsts) < 0)
+        {
+            dbg("get_port_status failed status %lX\r\n", dev->status);
+            return -1;
+        }
+
+        portstatus = swpw(portsts.wPortStatus);
+        portchange = swpw(portsts.wPortChange);
+
+        dbg("USB %d portstatus 0x%x, change 0x%x, %s\r\n", dev->usbnum, portstatus, portchange, portspeed(portstatus));
+        dbg("STAT_C_CONNECTION = %d STAT_CONNECTION = %d USB_PORT_STAT_ENABLE = %d\r\n",
+                (portchange & USB_PORT_STAT_C_CONNECTION) ? 1 : 0,
+                (portstatus & USB_PORT_STAT_CONNECTION) ? 1 : 0,
+                (portstatus & USB_PORT_STAT_ENABLE) ? 1 : 0);
+
+        if ((portchange & USB_PORT_STAT_C_CONNECTION) || !(portstatus & USB_PORT_STAT_CONNECTION))
+        {
+            return -1;
+        }
+
+        if (portstatus & USB_PORT_STAT_ENABLE)
+        {
+            break;
+        }
+
+#ifdef USB_POLL_HUB
+        if (pxCurrentTCB != NULL)
+            vTaskDelay((200*configTICK_RATE_HZ)/1000);
+        else
+#endif
+            wait(20 * 1000);
+    }
+
+    if (tries == MAX_TRIES)
+    {
+        dbg("USB %d, cannot enable port %d after %d retries, disabling port.\r\n", dev->usbnum, port + 1, MAX_TRIES);
+        dbg("Maybe the USB cable is bad?\r\n");
+
+        return -1;
+    }
+    usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_RESET);
+
+    *portstat = portstatus;
+
+    return 0;
+}
+
+void usb_hub_port_connect_change(struct usb_device *dev, int port)
+{
+    struct usb_device *usb;
+    struct usb_port_status portsts;
+    unsigned short portstatus;
+
+    /* Check status */
+    if (usb_get_port_status(dev, port + 1, &portsts) < 0)
+    {
+        dbg("USB %d get_port_status failed\r\n", dev->usbnum);
+
+        return;
+    }
+
+    portstatus = swpw(portsts.wPortStatus);
+#ifdef USB_DEBUG
+    {
+        unsigned short portchange;
+
+        portchange = swpw(portsts.wPortChange);
+        dbg("USB %d, portstatus %x, change %x, %s\r\n", dev->usbnum, portstatus, portchange, portspeed(portstatus));
+    }
+#endif /* USB_DEBUG */
+
+    /* Clear the connection change status */
+    usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_CONNECTION);
+
+    /* Disconnect any existing devices under this port */
+
+    if (((!(portstatus & USB_PORT_STAT_CONNECTION))
+     && (!(portstatus & USB_PORT_STAT_ENABLE))) || (dev->children[port]))
+    {
+        dbg("USB %d port %i disconnected\r\n", dev->usbnum, port + 1);
+        usb_disconnect(&dev->children[port]);
+
+        /* Return now if nothing is connected */
+        if (!(portstatus & USB_PORT_STAT_CONNECTION))
+        {
+            return;
+        }
+    }
+#ifdef USB_POLL_HUB
+    if (pxCurrentTCB != NULL)
+        vTaskDelay((200*configTICK_RATE_HZ)/1000);
+    else
+#endif
+        wait(2000);
+    /* Reset the port */
+    if (hub_port_reset(dev, port, &portstatus) < 0)
+    {
+        dbg("USB %d cannot reset port %i!?\r\n", dev->usbnum, port + 1);
+
+        return;
+    }
+#ifdef USB_POLL_HUB
+    if (pxCurrentTCB != NULL)
+        vTaskDelay((200*configTICK_RATE_HZ)/1000);
+    else
+#endif
+        wait(2000);
+
+    /* Allocate a new device struct for it */
+    usb = usb_alloc_new_device(dev->usbnum, dev->priv_hcd);
+
+    if (portstatus & USB_PORT_STAT_HIGH_SPEED)
+    {
+        usb->speed = USB_SPEED_HIGH;
+    }
+    else if (portstatus & USB_PORT_STAT_LOW_SPEED)
+    {
+        usb->speed = USB_SPEED_LOW;
+    }
+    else
+    {
+        usb->speed = USB_SPEED_FULL;
+    }
+
+    dbg("usb device = %p\r\n", usb);
+    dev->children[port] = usb;
+    usb->parent = dev;
+
+    /* Run it through the hoops (find a driver, etc) */
+    if (usb_new_device(usb))
+    {
+        /* Woops, disable the port */
+        dbg("USB %d hub: disabling port %d\r\n", dev->usbnum, port + 1);
+        usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_ENABLE);
+    }
+
+#ifdef USB_POLL_HUB
+    else if (pxCurrentTCB != NULL)
+    {
+        usb_kbd_register(usb);
+        usb_mouse_register(usb);
+#ifdef CONFIG_USB_STORAGE
+        usb_stor_register(usb);
+#endif /* CONFIG_USB_STORAGE */
+    }
+#endif
+}
+
+static void usb_hub_events(struct usb_device *dev)
+{
+    int i;
+    struct usb_hub_device *hub = dev->hub;
+
+    if (hub == NULL)
+    {
+        return;
+    }
+
+    for (i = 0; i < dev->maxchild; i++)
+    {
+        struct usb_port_status portsts;
+        unsigned short portstatus, portchange;
+
+        if (usb_get_port_status(dev, i + 1, &portsts) < 0)
+        {
+            dbg("get_port_status failed\r\n");
+
+            continue;
+        }
+        portstatus = swpw(portsts.wPortStatus);
+        portchange = swpw(portsts.wPortChange);
+
+        dbg("USB %d Port %d Status %X Change %X\r\n", dev->usbnum, i + 1, portstatus, portchange);
+
+        if (portchange & USB_PORT_STAT_C_CONNECTION)
+        {
+            dbg("USB %d port %d connection change\r\n", dev->usbnum, i + 1);
+            usb_hub_port_connect_change(dev, i);
+        }
+
+        if (portchange & USB_PORT_STAT_C_ENABLE)
+        {
+            dbg("USB %d port %d enable change, status %x\r\n", dev->usbnum, i + 1, portstatus);
+            usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_ENABLE);
+
+            /*
+             * EM interference sometimes causes bad shielded USB
+             * devices to be shutdown by the hub, this hack enables
+             * them again. Works at least with mouse driver
+             */
+            if (!(portstatus & USB_PORT_STAT_ENABLE) && (portstatus & USB_PORT_STAT_CONNECTION) && ((dev->children[i])))
+            {
+                dbg("USB %d already running port %i disabled by hub (EMI?), re-enabling...\r\n", dev->usbnum, i + 1);
+                usb_hub_port_connect_change(dev, i);
+            }
+        }
+
+        if (portstatus & USB_PORT_STAT_SUSPEND)
+        {
+            dbg("USB %d port %d suspend change\r\n", dev->usbnum, i + 1);
+            usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_SUSPEND);
+        }
+
+        if (portchange & USB_PORT_STAT_C_OVERCURRENT)
+        {
+            dbg("USB %d port %d over-current change\r\n", dev->usbnum, i + 1);
+            usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_OVER_CURRENT);
+            usb_hub_power_on(hub);
+        }
+
+        if (portchange & USB_PORT_STAT_C_RESET)
+        {
+            dbg("USB %d port %d reset change\r\n", dev->usbnum, i + 1);
+            usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_RESET);
+        }
+    } /* end for i all ports */
+}
+
+#ifdef USB_POLL_HUB
+void usb_poll_hub_task(void *pvParameters)
+{
+    int index_bus = 0;
+    portTickType timeout = configTICK_RATE_HZ/10;
+    if (pvParameters);
+    while(1)
+    {
+        if (xQueueAltReceive(queue_poll_hub, &index_bus, timeout) == pdPASS)
+        {
+            if ((index_bus >= 0) && (index_bus < USB_MAX_BUS) && (controller_priv[index_bus] != NULL))
+            {
+                dbg("USB %d event change\r\n", index_bus);
+#ifdef CONFIG_USB_INTERRUPT_POLLING
+                *vblsem = 0;
+#endif
+                usb_hub_events(&usb_dev[index_bus * USB_MAX_DEVICE]);
+#ifdef CONFIG_USB_INTERRUPT_POLLING
+                *vblsem = 1;
+#endif
+            }
+        }
+        else /* timeout */
+        {
+            int i;
+#ifdef CONFIG_USB_INTERRUPT_POLLING
+            *vblsem = 0;
+#endif
+            for (i = 0; i < USB_MAX_BUS ; i++)
+            {
+                if (controller_priv[i] != NULL)
+                    usb_hub_events(&usb_dev[i * USB_MAX_DEVICE]);
+            }
+#ifdef CONFIG_USB_INTERRUPT_POLLING
+            *vblsem = 1;
+#endif
+        }
+        timeout = portMAX_DELAY;
+    }
+}
+#endif /* USB_POLL_HUB */
+
+int usb_hub_configure(struct usb_device *dev)
+{
+    unsigned char *buffer;
+    unsigned char *bitmap;
+    struct usb_hub_descriptor *descriptor;
+    int i;
+    struct usb_hub_device *hub;
+
+    /* "allocate" Hub device */
+    hub = usb_hub_allocate();
+    dev->hub = hub;
+
+    if (hub == NULL)
+    {
+        dbg("could not allocate hub\r\n");
+
+        return -1;
+    }
+
+    hub->pusb_dev = dev;
+    buffer = (unsigned char *) driver_mem_alloc(USB_BUFSIZ);
+
+    if (buffer == NULL)
+    {
+        dbg("driver_mem_alloc() failure\r\n");
+        return -1;
+    }
+
+    /* Get the the hub descriptor */
+    if (usb_get_hub_descriptor(dev, buffer, 4) < 0)
+    {
+        dbg("failed to get hub descriptor, giving up %lX\r\n", dev->status);
+        driver_mem_free(buffer);
+        return -1;
+    }
+
+    dbg("bLength:0x%02X bDescriptorType:0x%02X bNbrPorts:0x%02X\r\n", buffer[0], buffer[1], buffer[2]);
+    descriptor = (struct usb_hub_descriptor *)buffer;
+
+    /* silence compiler warning if USB_BUFSIZ is > 256 [= sizeof(char)] */
+    i = descriptor->bLength;
+
+    if (i > USB_BUFSIZ)
+    {
+        dbg("failed to get hub descriptor - too long: %d\r\n", descriptor->bLength);
+        driver_mem_free(buffer);
+
+        return -1;
+    }
+
+    if (usb_get_hub_descriptor(dev, buffer, descriptor->bLength) < 0)
+    {
+        dbg("failed to get hub descriptor 2nd giving up %lX\r\n", dev->status);
+        driver_mem_free(buffer);
+
+        return -1;
+    }
+
+    memcpy((unsigned char *) &hub->desc, buffer, descriptor->bLength);
+
+    /* adjust 16bit values */
+    hub->desc.wHubCharacteristics = swpw(descriptor->wHubCharacteristics);
+
+    /* set the bitmap */
+    bitmap = (unsigned char *) &hub->desc.DeviceRemovable[0];
+
+    /* devices not removable by default */
+
+    memset(bitmap, 0xff, (USB_MAXCHILDREN + 1 + 7) / 8);
+    bitmap = (unsigned char *) &hub->desc.PortPowerCtrlMask[0];
+    memset(bitmap, 0xff, (USB_MAXCHILDREN + 1 + 7) / 8); /* PowerMask = 1B */
+
+    for (i = 0; i < ((hub->desc.bNbrPorts + 1 + 7) / 8); i++)
+    {
+        hub->desc.DeviceRemovable[i] = descriptor->DeviceRemovable[i];
+    }
+
+    for (i = 0; i < ((hub->desc.bNbrPorts + 1 + 7) / 8); i++)
+    {
+        hub->desc.DeviceRemovable[i] = descriptor->PortPowerCtrlMask[i];
+    }
+
+    dev->maxchild = descriptor->bNbrPorts;
+    dbg("USB %d, %d ports detected\r\n", dev->usbnum, dev->maxchild);
+    if (dev->maxchild >= 10)
+    {
+         dev->maxchild = 10;
+    }
+
+    switch(hub->desc.wHubCharacteristics & HUB_CHAR_LPSM)
+    {
+        case 0x00: dbg("ganged power switching\r\n"); break;
+        case 0x01: dbg("individual port power switching\r\n"); break;
+        case 0x02:
+        case 0x03: dbg("unknown reserved power switching mode\r\n"); break;
+    }
+
+    if (hub->desc.wHubCharacteristics & HUB_CHAR_COMPOUND)
+    {
+        dbg("part of a compound device\r\n");
+    }
+    else
+    {
+        dbg("standalone hub\r\n");
+    }
+
+    switch(hub->desc.wHubCharacteristics & HUB_CHAR_OCPM)
+    {
+        case 0x00: dbg("global over-current protection\r\n"); break;
+        case 0x08: dbg("individual port over-current protection\r\n"); break;
+        case 0x10:
+        case 0x18: dbg("no over-current protection\r\n"); break;
+    }
+
+    dbg("power on to power good time: %dms\r\n", descriptor->bPwrOn2PwrGood * 2);
+    dbg("hub controller current requirement: %dmA\r\n", descriptor->bHubContrCurrent);
+
+    for (i = 0; i < dev->maxchild; i++)
+    {
+        dbg("USB %d port %d is%s removable\r\n",
+            dev->usbnum, i + 1,
+            hub->desc.DeviceRemovable[(i + 1) / 8] & (1 << ((i + 1) % 8)) ? " not" : "");
+    }
+
+    if (sizeof(struct usb_hub_status) > USB_BUFSIZ)
+    {
+        dbg("usb_hub_configure: failed to get Status - too long: %d\r\n", descriptor->bLength);
+        driver_mem_free(buffer);
+
+        return -1;
+    }
+
+    if (usb_get_hub_status(dev, buffer) < 0)
+    {
+        dbg("usb_hub_configure: failed to get Status %lX\r\n", dev->status);
+        driver_mem_free(buffer);
+
+        return -1;
+    }
+
+#ifdef DEBUG_HUB
+    {
+        struct usb_hub_status *hubsts;
+
+        hubsts = (struct usb_hub_status *) buffer;
+        dbg("get_hub_status returned status %X, change %X\r\n",
+                        swpw(hubsts->wHubStatus), swpw(hubsts->wHubChange));
+        dbg("local power source is %s\r\n",
+                        (swpw(hubsts->wHubStatus) & HUB_STATUS_LOCAL_POWER) ? "lost (inactive)" : "good");
+        dbg("%sover-current condition exists\r\n",
+                        (swpw(hubsts->wHubStatus) & HUB_STATUS_OVERCURRENT) ? "" : "no ");
+    }
+#endif /* USB_DEBUG */
+
+    usb_hub_power_on(hub);
+
+#ifdef USB_POLL_HUB
+    if ((queue_poll_hub == NULL) && (pxCurrentTCB != NULL))
+    {
+        queue_poll_hub = xQueueCreate(64, sizeof(int));
+        if (queue_poll_hub != NULL)
+        {
+            /* Create poll/event task */
+            if (xTaskCreate(usb_poll_hub_task, (void *)"USBHub", configMINIMAL_STACK_SIZE, NULL, 16, NULL) != pdPASS)
+            {
+                vQueueDelete(queue_poll_hub);
+                queue_poll_hub = NULL;
+            }
+        }
+        vTaskDelay(configTICK_RATE_HZ);
+    }
+    if (queue_poll_hub == NULL)
+#endif
+
+    usb_hub_events(dev);
+    driver_mem_free(buffer);
+
+    return 0;
+}
+
+int usb_hub_probe(struct usb_device *dev, int ifnum)
+{
+    struct usb_interface_descriptor *iface;
+    struct usb_endpoint_descriptor *ep;
+    int ret;
+
+    iface = &dev->config.if_desc[ifnum];
+
+    /* Is it a hub? */
+    if (iface->bInterfaceClass != USB_CLASS_HUB)
+    {
+        dbg("iface->bInterfaceClass != USB_CLASS_HUB (%d), %d instead\r\n", USB_CLASS_HUB, iface->bInterfaceClass);
+        return 0;
+    }
+
+    /*
+     * Some hubs have a subclass of 1, which AFAICT according to the
+     * specs is not defined, but it works
+     */
+    if ((iface->bInterfaceSubClass != 0) && (iface->bInterfaceSubClass != 1))
+    {
+        dbg("iface->bInterfaceSubClass != {0, 1} (%d instead)\r\n", iface->bInterfaceSubClass);
+
+        return 0;
+    }
+
+    /* Multiple endpoints? What kind of mutant ninja-hub is this? */
+    if (iface->bNumEndpoints != 1)
+    {
+        dbg("iface->bNumEndpoints != 1 (%d instead)\r\n", iface->bNumEndpoints);
+        return 0;
+    }
+
+    ep = &iface->ep_desc[0];
+
+    /* Output endpoint? Curiousier and curiousier.. */
+    if (!(ep->bEndpointAddress & USB_DIR_IN))
+    {
+        dbg("!(ep->bEndpointAddress != USB_DIR_IN (0x%x instead)\r\n", ep->bEndpointAddress);
+
+        return 0;
+    }
+
+    /* If it's not an interrupt endpoint, we'd better punt! */
+    if ((ep->bmAttributes & 3) != 3)
+    {
+        return 0;
+    }
+
+    /* We found a hub */
+    dbg("USB %d hub found\r\n", dev->usbnum);
+
+    ret = usb_hub_configure(dev);
+
+    return ret;
+}
+
+

BaS_gcc/usb/usb_mouse.c

@@ -0,0 +1,301 @@
+/*
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#include <stdint.h>
+#include "bas_printf.h"
+#include "usb.h"
+#include "exceptions.h"
+#include "driver_mem.h"
+
+#define DEBUG_USBMOUSE
+#ifdef DEBUG_USBMOUSE
+#define dbg(format, arg...) do { xprintf("DEBUG: %s(): " format, __FUNCTION__, ##arg); } while (0)
+#else
+#define dbg(format, arg...) do { ; } while (0)
+#endif /* DEBUG_USBMOUSE */
+#define err(format, arg...) do { xprintf("ERROR: %s(): " format, __FUNCTION__, ##arg); } while (0)
+
+extern void ltoa(char *buf, long n, unsigned long base);
+extern void call_mousevec(unsigned char *data, void (**mousevec)(void *));
+//extern void call_ikbdvec(unsigned char code, _IOREC *iorec, void (**ikbdvec)());
+
+static unsigned char *new;
+static unsigned char old[8];
+static int mouse_installed;
+
+/* forward declaration */
+static int usb_mouse_probe(struct usb_device *dev, unsigned int ifnum);
+
+/* deregistering the mouse */
+int usb_mouse_deregister(struct usb_device *dev)
+{
+    dev->irq_handle = NULL;
+    if (new != NULL)
+    {
+        driver_mem_free(new);
+        new = NULL;
+    }
+    mouse_installed = 0;
+    dbg("USB MOUSE deregister\r\n");
+    return 1;
+}
+
+/* registering the mouse */
+int usb_mouse_register(struct usb_device *dev)
+{
+    if (!mouse_installed && (dev->devnum != -1) && (usb_mouse_probe(dev, 0) == 1))
+    {
+        /* Ok, we found a mouse */
+        dbg("USB MOUSE found (USB: %d, devnum: %d)\r\n", dev->usbnum, dev->devnum);
+        mouse_installed = 1;
+        dev->deregister = usb_mouse_deregister;
+        return 1;
+    }
+    /* no USB Mouse found */
+    return -1;
+}
+
+/* search for mouse and register it if found */
+int drv_usb_mouse_init(void)
+{
+    int i;
+    int j;
+
+    /*
+     * check if mouse is already initialized
+     */
+    if (mouse_installed)
+    {
+        xprintf("USB mouse already initialized\r\n");
+
+        return -1;
+    }
+
+    /* scan all USB Devices */
+    for (j = 0; j < USB_MAX_BUS; j++)
+    {
+        for (i = 0; i < USB_MAX_DEVICE; i++)
+        {
+            struct usb_device *dev = usb_get_dev_index(i, j); /* get device */
+
+            if (dev == NULL)
+            {
+                break;
+            }
+
+            xprintf("Try to register usb device %d,%d as mouse\r\n", i, j);
+            if (usb_mouse_register(dev) > 0)
+                return 1;
+        }
+    }
+    /* no USB Mouse found */
+    return -1;
+}
+
+/**************************************************************************
+ * Low Level drivers
+ */
+static void usb_kbd_send_code(unsigned char code)
+{
+    dbg("FIXME: usb_kbd_send_code 0x%x not implemented\r\n", code);
+}
+
+/* Interrupt service routine */
+static int usb_mouse_irq(struct usb_device *dev)
+{
+#ifdef CONFIG_USB_INTERRUPT_POLLING
+    int level;
+#endif
+    int i, change = 0;
+    if ((dev->irq_status != 0) || (dev->irq_act_len < 3) || (dev->irq_act_len > 8))
+    {
+        dbg("USB MOUSE error %lX, len %d\r\n", dev->irq_status, dev->irq_act_len);
+        return 1;
+    }
+    for (i = 0; i < dev->irq_act_len; i++)
+    {
+        if (new[i] != old[i])
+        {
+            change = 1;
+            break;
+        }
+    }
+    if (change)
+    {
+        char wheel = 0, buttons, old_buttons;
+        dbg("USB MOUSE len:%d %02X %02X %02X %02X %02X %02X\r\n", dev->irq_act_len, new[0], new[1], new[2], new[3], new[4], new[5]);
+#ifdef CONFIG_USB_INTERRUPT_POLLING
+        level = set_ipl(7); /* mask interrupts */
+#endif
+        if ((dev->irq_act_len >= 6) && (new[0] == 1)) /* report-ID */
+        {
+            buttons = new[1];
+            old_buttons = old[1];
+            new[0] = ((new[1] & 1) << 1) + ((new[1] & 2) >> 1) + 0xF8;
+            new[1] = new[2];
+            new[2] = new[3];
+            wheel = new[4];
+        }
+        else /* boot report */
+        {
+            buttons = new[0];
+            old_buttons = old[0];
+            new[0] = ((new[0] & 1) << 1) + ((new[0] & 2) >> 1) + 0xF8;
+            if (dev->irq_act_len >= 3)
+                wheel = new[3];
+        }
+        if ((buttons ^ old_buttons) & 4) /* 3rd button */
+        {
+          if (buttons & 4)
+          {
+                usb_kbd_send_code(0x72); /* ENTER */
+                usb_kbd_send_code(0xF2);
+            }
+        }
+        if (wheel != 0) /* actually like Eiffel */
+        {
+#define REPEAT_WHEEL 3
+            int i;
+            if (wheel > 0)
+            {
+                for (i = 0; i < REPEAT_WHEEL; i++)
+                {
+                    usb_kbd_send_code(0x48); /* UP */
+                    usb_kbd_send_code(0xC8);
+                }
+            }
+            else
+            {
+                for (i = 0; i < REPEAT_WHEEL; i++)
+                {
+                    usb_kbd_send_code(0x50); /* DOWN */
+                    usb_kbd_send_code(0xD0);
+                }
+            }
+        }
+        xprintf("FIXME: call_mousevec(new, mousevec) not implemented\r\n");
+        //if(mousevec != NULL)
+            //call_mousevec(new, mousevec);
+#ifdef CONFIG_USB_INTERRUPT_POLLING
+        set_ipl(level);
+#endif
+        old[0] = new[0];
+        old[1] = new[1];
+        old[2] = new[2];
+        old[3] = new[3];
+        old[4] = new[4];
+        old[5] = new[5];
+    }
+    return 1; /* install IRQ Handler again */
+}
+
+/* probes the USB device dev for mouse type */
+static int usb_mouse_probe(struct usb_device *dev, unsigned int ifnum)
+{
+    struct usb_interface_descriptor *iface;
+    struct usb_endpoint_descriptor *ep;
+    int pipe;
+    int maxp;
+
+#ifdef _NOT_USED_
+    if (dev->descriptor.bNumConfigurations != 1)
+    {
+        dbg("dev->descriptor.bNumConfigurations != 1\r\n");
+
+        return 0;
+    }
+#endif
+
+    iface = &dev->config.if_desc[ifnum];
+
+    if (iface->bInterfaceClass != USB_CLASS_HID)
+    {
+        dbg("iface->bInterfaceClass != USB_CLASS_HID (%d instead)\r\n", iface->bInterfaceClass);
+
+        return 0;
+    }
+
+
+    if (iface->bInterfaceSubClass != USB_SUB_HID_BOOT)
+    {
+        dbg("iface->bInterfaceSubClass != USB_SUB_HID_BOOT (%d instead)\r\n", iface->bInterfaceSubClass);
+
+        return 0;
+    }
+
+    if (iface->bInterfaceProtocol != USB_PROT_HID_MOUSE)
+    {
+        dbg("iface->bInterfaceProtocol != USB_PROT_HID_MOUSE (%d)\r\n", iface->bInterfaceProtocol);
+
+        return 0;
+    }
+
+    if (iface->bNumEndpoints != 1)
+    {
+        dbg("iface->bNumEndpoints != 1\r\n");
+
+        return 0;
+    }
+
+    ep = &iface->ep_desc[0];
+
+    if (!(ep->bEndpointAddress & 0x80))
+    {
+        dbg("! ep->bEndpointAddress & 0x80\r\n");
+
+        return 0;
+    }
+
+    if ((ep->bmAttributes & 3) != 3)
+    {
+        dbg("ep->bmAttributes & 3 != 3\r\n");
+
+        return 0;
+    }
+
+    new = (unsigned char *) driver_mem_alloc(8);
+    if (new == NULL)
+    {
+        dbg("new == NULL\r\n");
+
+        return 0;
+    }
+
+    dbg("USB MOUSE found set protocol...\r\n");
+
+    /* ok, we found a USB Mouse, install it */
+    pipe = usb_rcvintpipe(dev, ep->bEndpointAddress);
+    maxp = usb_maxpacket(dev, pipe);
+//	if(maxp < 6)
+//		usb_set_protocol(dev, iface->bInterfaceNumber, 0); /* boot */
+//	else
+    usb_set_protocol(dev, iface->bInterfaceNumber, 1); /* report */
+    dbg("USB MOUSE found set idle...\r\n");
+    usb_set_idle(dev, iface->bInterfaceNumber, 0, 0); /* report infinite */
+    memset(&new[0], 0, 8);
+    memset(&old[0], 0, 8);
+    dev->irq_handle = usb_mouse_irq;
+    dbg("USB MOUSE enable interrupt pipe (maxp: %d)...\r\n", maxp);
+    usb_submit_int_msg(dev, pipe, &new[0], maxp > 8 ? 8 : maxp, ep->bInterval);
+    return 1;
+}
+