u132-hcd.c

host usb 主设备程序 支持sd卡 mouse keyboard 的最单单的驱动程序 gcc编译

                u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
                return;
        } else if (endp->dequeueing) {
                endp->dequeueing = 0;
                up(&u132->scheduler_lock);
                u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
                return;
        } else if (u132->going > 0) {
                dev_err(&u132->platform_dev->dev, "device is being removed urb="
                        "%p status=%d\n", urb, urb->status);
                up(&u132->scheduler_lock);
                u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
                return;
        } else if (urb->status == -EINPROGRESS) {
                struct u132_ring *ring = endp->ring;
                u8 *u = urb->transfer_buffer + urb->actual_length;
                u8 *b = buf;
                int L = len;
                while (L-- > 0) {
                        *u++ = *b++;
                }
                urb->actual_length += len;
                if ((condition_code == TD_CC_NOERROR) &&
                        (urb->transfer_buffer_length > urb->actual_length)) {
                        endp->toggle_bits = toggle_bits;
                        usb_settoggle(udev->usb_device, endp->usb_endp, 0,
                                1 & toggle_bits);
                        if (urb->actual_length > 0) {
                                int retval;
                                up(&u132->scheduler_lock);
                                retval = edset_single(u132, ring, endp, urb,
                                        address, endp->toggle_bits,
                                        u132_hcd_interrupt_recv);
                                if (retval == 0) {
                                } else
                                        u132_hcd_giveback_urb(u132, endp, urb,
                                                retval);
                        } else {
                                ring->in_use = 0;
                                endp->active = 0;
                                endp->jiffies = jiffies +
                                        msecs_to_jiffies(urb->interval);
                                u132_ring_cancel_work(u132, ring);
                                u132_ring_queue_work(u132, ring, 0);
                                up(&u132->scheduler_lock);
                                u132_endp_put_kref(u132, endp);
                        }
                        return;
                } else if ((condition_code == TD_DATAUNDERRUN) &&
                        ((urb->transfer_flags & URB_SHORT_NOT_OK) == 0)) {
                        endp->toggle_bits = toggle_bits;
                        usb_settoggle(udev->usb_device, endp->usb_endp, 0,
                                1 & toggle_bits);
                        up(&u132->scheduler_lock);
                        u132_hcd_giveback_urb(u132, endp, urb, 0);
                        return;
                } else {
                        if (condition_code == TD_CC_NOERROR) {
                                endp->toggle_bits = toggle_bits;
                                usb_settoggle(udev->usb_device, endp->usb_endp,
                                        0, 1 & toggle_bits);
                        } else if (condition_code == TD_CC_STALL) {
                                endp->toggle_bits = 0x2;
                                usb_settoggle(udev->usb_device, endp->usb_endp,
                                        0, 0);
                        } else {
                                endp->toggle_bits = 0x2;
                                usb_settoggle(udev->usb_device, endp->usb_endp,
                                        0, 0);
                                dev_err(&u132->platform_dev->dev, "urb=%p givin"
                                        "g back INTERRUPT %s\n", urb,
                                        cc_to_text[condition_code]);
                        }
                        up(&u132->scheduler_lock);
                        u132_hcd_giveback_urb(u132, endp, urb,
                                cc_to_error[condition_code]);
                        return;
                }
        } else {
                dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p statu"
                        "s=%d\n", urb, urb->status);
                up(&u132->scheduler_lock);
                u132_hcd_giveback_urb(u132, endp, urb, urb->status);
                return;
        }
}

static void u132_hcd_bulk_output_sent(void *data, struct urb *urb, u8 *buf,
        int len, int toggle_bits, int error_count, int condition_code,
        int repeat_number, int halted, int skipped, int actual, int non_null)
{
        struct u132_endp *endp = data;
        struct u132 *u132 = endp->u132;
        u8 address = u132->addr[endp->usb_addr].address;
        down(&u132->scheduler_lock);
        if (u132->going > 1) {
                dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
                        , u132->going);
                up(&u132->scheduler_lock);
                u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
                return;
        } else if (endp->dequeueing) {
                endp->dequeueing = 0;
                up(&u132->scheduler_lock);
                u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
                return;
        } else if (u132->going > 0) {
                dev_err(&u132->platform_dev->dev, "device is being removed urb="
                        "%p status=%d\n", urb, urb->status);
                up(&u132->scheduler_lock);
                u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
                return;
        } else if (urb->status == -EINPROGRESS) {
                struct u132_ring *ring = endp->ring;
                urb->actual_length += len;
                endp->toggle_bits = toggle_bits;
                if (urb->transfer_buffer_length > urb->actual_length) {
                        int retval;
                        up(&u132->scheduler_lock);
                        retval = edset_output(u132, ring, endp, urb, address,
                                endp->toggle_bits, u132_hcd_bulk_output_sent);
                        if (retval == 0) {
                        } else
                                u132_hcd_giveback_urb(u132, endp, urb, retval);
                        return;
                } else {
                        up(&u132->scheduler_lock);
                        u132_hcd_giveback_urb(u132, endp, urb, 0);
                        return;
                }
        } else {
                dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p statu"
                        "s=%d\n", urb, urb->status);
                up(&u132->scheduler_lock);
                u132_hcd_giveback_urb(u132, endp, urb, urb->status);
                return;
        }
}

static void u132_hcd_bulk_input_recv(void *data, struct urb *urb, u8 *buf,
        int len, int toggle_bits, int error_count, int condition_code,
        int repeat_number, int halted, int skipped, int actual, int non_null)
{
        struct u132_endp *endp = data;
        struct u132 *u132 = endp->u132;
        u8 address = u132->addr[endp->usb_addr].address;
        struct u132_udev *udev = &u132->udev[address];
        down(&u132->scheduler_lock);
        if (u132->going > 1) {
                dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
                        , u132->going);
                up(&u132->scheduler_lock);
                u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
                return;
        } else if (endp->dequeueing) {
                endp->dequeueing = 0;
                up(&u132->scheduler_lock);
                u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
                return;
        } else if (u132->going > 0) {
                dev_err(&u132->platform_dev->dev, "device is being removed urb="
                        "%p status=%d\n", urb, urb->status);
                up(&u132->scheduler_lock);
                u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
                return;
        } else if (urb->status == -EINPROGRESS) {
                struct u132_ring *ring = endp->ring;
                u8 *u = urb->transfer_buffer + urb->actual_length;
                u8 *b = buf;
                int L = len;
                while (L-- > 0) {
                        *u++ = *b++;
                }
                urb->actual_length += len;
                if ((condition_code == TD_CC_NOERROR) &&
                        (urb->transfer_buffer_length > urb->actual_length)) {
                        int retval;
                        endp->toggle_bits = toggle_bits;
                        usb_settoggle(udev->usb_device, endp->usb_endp, 0,
                                1 & toggle_bits);
                        up(&u132->scheduler_lock);
                        retval = usb_ftdi_elan_edset_input(u132->platform_dev,
                                ring->number, endp, urb, address,
                                endp->usb_endp, endp->toggle_bits,
                                u132_hcd_bulk_input_recv);
                        if (retval == 0) {
                        } else
                                u132_hcd_giveback_urb(u132, endp, urb, retval);
                        return;
                } else if (condition_code == TD_CC_NOERROR) {
                        endp->toggle_bits = toggle_bits;
                        usb_settoggle(udev->usb_device, endp->usb_endp, 0,
                                1 & toggle_bits);
                        up(&u132->scheduler_lock);
                        u132_hcd_giveback_urb(u132, endp, urb,
                                cc_to_error[condition_code]);
                        return;
                } else if ((condition_code == TD_DATAUNDERRUN) &&
                        ((urb->transfer_flags & URB_SHORT_NOT_OK) == 0)) {
                        endp->toggle_bits = toggle_bits;
                        usb_settoggle(udev->usb_device, endp->usb_endp, 0,
                                1 & toggle_bits);
                        up(&u132->scheduler_lock);
                        u132_hcd_giveback_urb(u132, endp, urb, 0);
                        return;
                } else if (condition_code == TD_DATAUNDERRUN) {
                        endp->toggle_bits = toggle_bits;
                        usb_settoggle(udev->usb_device, endp->usb_endp, 0,
                                1 & toggle_bits);
                        dev_warn(&u132->platform_dev->dev, "urb=%p(SHORT NOT OK"
                                ") giving back BULK IN %s\n", urb,
                                cc_to_text[condition_code]);
                        up(&u132->scheduler_lock);
                        u132_hcd_giveback_urb(u132, endp, urb, 0);
                        return;
                } else if (condition_code == TD_CC_STALL) {
                        endp->toggle_bits = 0x2;
                        usb_settoggle(udev->usb_device, endp->usb_endp, 0, 0);
                        up(&u132->scheduler_lock);
                        u132_hcd_giveback_urb(u132, endp, urb,
                                cc_to_error[condition_code]);
                        return;
                } else {
                        endp->toggle_bits = 0x2;
                        usb_settoggle(udev->usb_device, endp->usb_endp, 0, 0);
                        dev_err(&u132->platform_dev->dev, "urb=%p giving back B"
                                "ULK IN code=%d %s\n", urb, condition_code,
                                cc_to_text[condition_code]);
                        up(&u132->scheduler_lock);
                        u132_hcd_giveback_urb(u132, endp, urb,
                                cc_to_error[condition_code]);
                        return;
                }
        } else {
                dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p statu"
                        "s=%d\n", urb, urb->status);
                up(&u132->scheduler_lock);
                u132_hcd_giveback_urb(u132, endp, urb, urb->status);
                return;
        }
}

static void u132_hcd_configure_empty_sent(void *data, struct urb *urb, u8 *buf,
        int len, int toggle_bits, int error_count, int condition_code,
        int repeat_number, int halted, int skipped, int actual, int non_null)
{
        struct u132_endp *endp = data;
        struct u132 *u132 = endp->u132;
        down(&u132->scheduler_lock);
        if (u132->going > 1) {
                dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
                        , u132->going);
                up(&u132->scheduler_lock);
                u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
                return;
        } else if (endp->dequeueing) {
                endp->dequeueing = 0;
                up(&u132->scheduler_lock);
                u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
                return;
        } else if (u132->going > 0) {
                dev_err(&u132->platform_dev->dev, "device is being removed urb="
                        "%p status=%d\n", urb, urb->status);
                up(&u132->scheduler_lock);
                u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
                return;
        } else if (urb->status == -EINPROGRESS) {
                up(&u132->scheduler_lock);
                u132_hcd_giveback_urb(u132, endp, urb, 0);
                return;
        } else {
                dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p statu"
                        "s=%d\n", urb, urb->status);
                up(&u132->scheduler_lock);
                u132_hcd_giveback_urb(u132, endp, urb, urb->status);
                return;
        }
}

static void u132_hcd_configure_input_recv(void *data, struct urb *urb, u8 *buf,
        int len, int toggle_bits, int error_count, int condition_code,
        int repeat_number, int halted, int skipped, int actual, int non_null)
{
        struct u132_endp *endp = data;
        struct u132 *u132 = endp->u132;
        u8 address = u132->addr[endp->usb_addr].address;
        down(&u132->scheduler_lock);
        if (u132->going > 1) {
                dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
                        , u132->going);
                up(&u132->scheduler_lock);
                u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
                return;
        } else if (endp->dequeueing) {
                endp->dequeueing = 0;
                up(&u132->scheduler_lock);
                u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
                return;
        } else if (u132->going > 0) {
                dev_err(&u132->platform_dev->dev, "device is being removed urb="
                        "%p status=%d\n", urb, urb->status);
                up(&u132->scheduler_lock);
                u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
                return;
        } else if (urb->status == -EINPROGRESS) {
                struct u132_ring *ring = endp->ring;
                u8 *u = urb->transfer_buffer;
                u8 *b = buf;
                int L = len;
                while (L-- > 0) {
                        *u++ = *b++;
                }
                urb->actual_length = len;
                if ((condition_code == TD_CC_NOERROR) || ((condition_code ==
                        TD_DATAUNDERRUN) && ((urb->transfer_flags &
                        URB_SHORT_NOT_OK) == 0))) {
                        int retval;
                        up(&u132->scheduler_lock);
                        retval = usb_ftdi_elan_edset_empty(u132->platform_dev,