subdir-$(CONFIG_USB_EHCI_HCD) += host
subdir-$(CONFIG_USB_OHCI_HCD) += host
subdir-$(CONFIG_USB_OHCI) += host
+subdir-$(CONFIG_USB_SL811HS) += host
subdir-$(CONFIG_USB_UHCI_ALT) += host
subdir-$(CONFIG_USB_UHCI_HCD_ALT) += host
subdir-$(CONFIG_USB_UHCI_HCD) += host
inserted in and removed from the running kernel whenever you want).
The module will be called usb-ohci.o. If you want to compile it
as a module, say M here and read <file:Documentation/modules.txt>.
+
+CONFIG_USB_SL811HS
+ Say Y here if you have a SL811HS USB host controller in your system.
+
+ If you do not know what this is, please say N.
+
+ This code is also available as a module ( = code which can be
+ inserted in and removed from the running kernel whenever you want).
+ The module will be called hc_sl811.o. If you want to compile it
+ as a module, say M here and read <file:Documentation/modules.txt>.
# define_bool CONFIG_USB_UHCI_ALT n
#fi
#dep_tristate ' OHCI (Compaq, iMacs, OPTi, SiS, ALi, ...) support' CONFIG_USB_OHCI $CONFIG_USB
+if [ "$CONFIG_ARM" = "y" ]; then
+ dep_tristate ' SL811HS support' CONFIG_USB_SL811HS $CONFIG_USB
+fi
obj-$(CONFIG_USB_UHCI) += usb-uhci.o
obj-$(CONFIG_USB_UHCI_ALT) += uhci.o
obj-$(CONFIG_USB_OHCI) += usb-ohci.o
+obj-$(CONFIG_USB_SL811HS) += hc_sl811.o
include $(TOPDIR)/Rules.make
--- /dev/null
+/*-------------------------------------------------------------------------*/
+/*-------------------------------------------------------------------------*
+ * simple generic USB HCD frontend Version 0.9.5 (10/28/2001)
+ * for embedded HCs (SL811HS)
+ *
+ * USB URB handling, hci_ hcs_
+ * URB queueing, qu_
+ * Transfer scheduling, sh_
+ *
+ *
+ *-------------------------------------------------------------------------*
+ * 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
+ *
+ *-------------------------------------------------------------------------*/
+
+/* main lock for urb access */
+static spinlock_t usb_urb_lock = SPIN_LOCK_UNLOCKED;
+
+/*-------------------------------------------------------------------------*/
+/*-------------------------------------------------------------------------*/
+/* URB HCD API function layer
+ * * * */
+
+/***************************************************************************
+ * Function Name : hcs_urb_queue
+ *
+ * This function initializes the urb status and length before queueing the
+ * urb.
+ *
+ * Input: hci = data structure for the host controller
+ * urb = USB request block data structure
+ *
+ * Return: 0
+ **************************************************************************/
+static inline int hcs_urb_queue (hci_t * hci, struct urb * urb)
+{
+ int i;
+
+ DBGFUNC ("enter hcs_urb_queue\n");
+ if (usb_pipeisoc (urb->pipe)) {
+ DBGVERBOSE ("hcs_urb_queue: isoc pipe\n");
+ for (i = 0; i < urb->number_of_packets; i++) {
+ urb->iso_frame_desc[i].actual_length = 0;
+ urb->iso_frame_desc[i].status = -EXDEV;
+ }
+
+ /* urb->next hack : 1 .. resub, 0 .. single shot */
+ /* urb->interval = urb->next ? 1 : 0; */
+ }
+
+ urb->status = -EINPROGRESS;
+ urb->actual_length = 0;
+ urb->error_count = 0;
+
+ if (usb_pipecontrol (urb->pipe))
+ hc_flush_data_cache (hci, urb->setup_packet, 8);
+ if (usb_pipeout (urb->pipe))
+ hc_flush_data_cache (hci, urb->transfer_buffer,
+ urb->transfer_buffer_length);
+
+ qu_queue_urb (hci, urb);
+
+ return 0;
+}
+
+/***************************************************************************
+ * Function Name : hcs_return_urb
+ *
+ * This function the return path of URB back to the USB core. It calls the
+ * the urb complete function if exist, and also handles the resubmition of
+ * interrupt URBs.
+ *
+ * Input: hci = data structure for the host controller
+ * urb = USB request block data structure
+ * resub_ok = resubmit flag: 1 = submit urb again, 0 = not submit
+ *
+ * Return: 0
+ **************************************************************************/
+static int hcs_return_urb (hci_t * hci, struct urb * urb, int resub_ok)
+{
+ struct usb_device *dev = urb->dev;
+ int resubmit = 0;
+
+ DBGFUNC ("enter hcs_return_urb, urb pointer = 0x%x, "
+ "transferbuffer point = 0x%x, "
+ " setup packet pointer = 0x%x, context pointer = 0x%x \n",
+ (__u32 *) urb, (__u32 *) urb->transfer_buffer,
+ (__u32 *) urb->setup_packet, (__u32 *) urb->context);
+ if (urb_debug)
+ urb_print (urb, "RET", usb_pipeout (urb->pipe));
+
+ resubmit = urb->interval && resub_ok;
+
+ urb->dev = urb->hcpriv = NULL;
+
+ if (urb->complete) {
+ urb->complete (urb); /* call complete */
+ }
+
+ if (resubmit) {
+ /* requeue the URB */
+ urb->dev = dev;
+ hcs_urb_queue (hci, urb);
+ } else {
+ usb_put_urb(urb);
+ }
+
+ return 0;
+}
+
+/***************************************************************************
+ * Function Name : hci_submit_urb
+ *
+ * This function is called by the USB core API when an URB is available to
+ * process. This function does the following
+ *
+ * 1) Check the validity of the URB
+ * 2) Parse the device number from the URB
+ * 3) Pass the URB to the root hub routine if its intended for the hub, else
+ * queue the urb for the attached device.
+ *
+ * Input: urb = USB request block data structure
+ *
+ * Return: 0 if success or error code
+ **************************************************************************/
+static int hci_submit_urb (struct urb * urb, int mem_flags)
+{
+ hci_t *hci;
+ unsigned int pipe = urb->pipe;
+ unsigned long flags;
+ int ret;
+
+ DBGFUNC ("enter hci_submit_urb, pipe = 0x%x\n", urb->pipe);
+ if (!urb->dev || !urb->dev->bus || urb->hcpriv)
+ return -EINVAL;
+
+ if (usb_endpoint_halted
+ (urb->dev, usb_pipeendpoint (pipe), usb_pipeout (pipe))) {
+ printk ("hci_submit_urb: endpoint_halted\n");
+ return -EPIPE;
+ }
+ hci = (hci_t *) urb->dev->bus->hcpriv;
+
+ /* a request to the virtual root hub */
+ if (usb_pipedevice (pipe) == hci->rh.devnum) {
+ if (urb_debug > 1)
+ urb_print (urb, "SUB-RH", usb_pipein (pipe));
+
+ return rh_submit_urb (urb);
+ }
+
+ /* increment urb's reference count, we now control it. */
+ urb = usb_get_urb (urb);
+
+ /* queue the URB to its endpoint-queue */
+ spin_lock_irqsave (&usb_urb_lock, flags);
+ ret = hcs_urb_queue (hci, urb);
+ if (ret != 0) {
+ /* error on return */
+ DBGERR ("hci_submit_urb: return err, ret = 0x%x, urb->status = 0x%x\n",
+ ret, urb->status);
+ usb_put_urb (urb);
+ }
+
+ spin_unlock_irqrestore (&usb_urb_lock, flags);
+
+ return ret;
+
+}
+
+/***************************************************************************
+ * Function Name : hci_unlink_urb
+ *
+ * This function mark the URB to unlink
+ *
+ * Input: urb = USB request block data structure
+ *
+ * Return: 0 if success or error code
+ **************************************************************************/
+static int hci_unlink_urb (struct urb * urb)
+{
+ unsigned long flags;
+ hci_t *hci;
+ DECLARE_WAITQUEUE (wait, current);
+ void *comp = NULL;
+
+ DBGFUNC ("enter hci_unlink_urb\n");
+
+ if (!urb) /* just to be sure */
+ return -EINVAL;
+
+ if (!urb->dev || !urb->dev->bus)
+ return -ENODEV;
+
+ hci = (hci_t *) urb->dev->bus->hcpriv;
+
+ /* a request to the virtual root hub */
+ if (usb_pipedevice (urb->pipe) == hci->rh.devnum) {
+ return rh_unlink_urb (urb);
+ }
+
+ if (urb_debug)
+ urb_print (urb, "UNLINK", 1);
+
+ spin_lock_irqsave (&usb_urb_lock, flags);
+
+ if (!list_empty (&urb->urb_list) && urb->status == -EINPROGRESS) {
+ /* URB active? */
+
+ if (urb->transfer_flags & (USB_ASYNC_UNLINK | USB_TIMEOUT_KILLED)) {
+ /* asynchron with callback */
+
+ list_del (&urb->urb_list); /* relink the urb to the del list */
+ list_add (&urb->urb_list, &hci->del_list);
+ spin_unlock_irqrestore (&usb_urb_lock, flags);
+
+ } else {
+ /* synchron without callback */
+
+ add_wait_queue (&hci->waitq, &wait);
+
+ set_current_state (TASK_UNINTERRUPTIBLE);
+ comp = urb->complete;
+ urb->complete = NULL;
+
+ list_del (&urb->urb_list); /* relink the urb to the del list */
+ list_add (&urb->urb_list, &hci->del_list);
+
+ spin_unlock_irqrestore (&usb_urb_lock, flags);
+
+ schedule_timeout (HZ / 50);
+
+ if (!list_empty (&urb->urb_list))
+ list_del (&urb->urb_list);
+
+ urb->complete = comp;
+ urb->hcpriv = NULL;
+ remove_wait_queue (&hci->waitq, &wait);
+ }
+ } else {
+ /* hcd does not own URB but we keep the driver happy anyway */
+ spin_unlock_irqrestore (&usb_urb_lock, flags);
+
+ if (urb->complete && (urb->transfer_flags & USB_ASYNC_UNLINK)) {
+ urb->status = -ENOENT;
+ urb->actual_length = 0;
+ urb->complete (urb);
+ urb->status = 0;
+ } else {
+ urb->status = -ENOENT;
+ }
+ }
+
+ return 0;
+}
+
+/***************************************************************************
+ * Function Name : hci_alloc_dev
+ *
+ * This function allocates private data space for the usb device and
+ * initialize the endpoint descriptor heads.
+ *
+ * Input: usb_dev = pointer to the usb device
+ *
+ * Return: 0 if success or error code
+ **************************************************************************/
+static int hci_alloc_dev (struct usb_device *usb_dev)
+{
+ struct hci_device *dev;
+ int i;
+
+ DBGFUNC ("enter hci_alloc_dev\n");
+ dev = kmalloc (sizeof (*dev), GFP_KERNEL);
+ if (!dev)
+ return -ENOMEM;
+
+ memset (dev, 0, sizeof (*dev));
+
+ for (i = 0; i < 32; i++) {
+ INIT_LIST_HEAD (&(dev->ed[i].urb_queue));
+ dev->ed[i].pipe_head = NULL;
+ }
+
+ usb_dev->hcpriv = dev;
+
+ DBGVERBOSE ("USB HC dev alloc %d bytes\n", sizeof (*dev));
+
+ return 0;
+
+}
+
+/***************************************************************************
+ * Function Name : hci_free_dev
+ *
+ * This function de-allocates private data space for the usb devic
+ *
+ * Input: usb_dev = pointer to the usb device
+ *
+ * Return: 0
+ **************************************************************************/
+static int hci_free_dev (struct usb_device *usb_dev)
+{
+ DBGFUNC ("enter hci_free_dev\n");
+
+ if (usb_dev->hcpriv)
+ kfree (usb_dev->hcpriv);
+
+ usb_dev->hcpriv = NULL;
+
+ return 0;
+}
+
+/***************************************************************************
+ * Function Name : hci_get_current_frame_number
+ *
+ * This function get the current USB frame number
+ *
+ * Input: usb_dev = pointer to the usb device
+ *
+ * Return: frame number
+ **************************************************************************/
+static int hci_get_current_frame_number (struct usb_device *usb_dev)
+{
+ hci_t *hci = usb_dev->bus->hcpriv;
+ DBGFUNC ("enter hci_get_current_frame_number, frame = 0x%x \r\n",
+ hci->frame_number);
+
+ return (hci->frame_number);
+}
+
+/***************************************************************************
+ * List of all io-functions
+ **************************************************************************/
+
+static struct usb_operations hci_device_operations = {
+ allocate: hci_alloc_dev,
+ deallocate: hci_free_dev,
+ get_frame_number: hci_get_current_frame_number,
+ submit_urb: hci_submit_urb,
+ unlink_urb: hci_unlink_urb,
+};
+
+/***************************************************************************
+ * URB queueing:
+ *
+ * For each type of transfer (INTR, BULK, ISO, CTRL) there is a list of
+ * active URBs.
+ * (hci->intr_list, hci->bulk_list, hci->iso_list, hci->ctrl_list)
+ * For every endpoint the head URB of the queued URBs is linked to one of
+ * those lists.
+ *
+ * The rest of the queued URBs of an endpoint are linked into a
+ * private URB list for each endpoint. (hci_dev->ed [endpoint_io].urb_queue)
+ * hci_dev->ed [endpoint_io].pipe_head .. points to the head URB which is
+ * in one of the active URB lists.
+ *
+ * The index of an endpoint consists of its number and its direction.
+ *
+ * The state of an intr and iso URB is 0.
+ * For ctrl URBs the states are US_CTRL_SETUP, US_CTRL_DATA, US_CTRL_ACK
+ * Bulk URBs states are US_BULK and US_BULK0 (with 0-len packet)
+ *
+ **************************************************************************/
+
+/***************************************************************************
+ * Function Name : qu_urb_timeout
+ *
+ * This function is called when the URB timeout. The function unlinks the
+ * URB.
+ *
+ * Input: lurb: URB
+ *
+ * Return: none
+ **************************************************************************/
+#ifdef HC_URB_TIMEOUT
+static void qu_urb_timeout (unsigned long lurb)
+{
+ struct urb *urb = (struct urb *) lurb;
+
+ DBGFUNC ("enter qu_urb_timeout\n");
+ urb->transfer_flags |= USB_TIMEOUT_KILLED;
+ hci_unlink_urb (urb);
+}
+#endif
+
+/***************************************************************************
+ * Function Name : qu_pipeindex
+ *
+ * This function gets the index of the pipe.
+ *
+ * Input: pipe: the urb pipe
+ *
+ * Return: index
+ **************************************************************************/
+static inline int qu_pipeindex (__u32 pipe)
+{
+ DBGFUNC ("enter qu_pipeindex\n");
+ return (usb_pipeendpoint (pipe) << 1) | (usb_pipecontrol (pipe) ? 0 : usb_pipeout (pipe));
+}
+
+/***************************************************************************
+ * Function Name : qu_seturbstate
+ *
+ * This function set the state of the URB.
+ *
+ * control pipe: 3 states -- Setup, data, status
+ * interrupt and bulk pipe: 1 state -- data
+ *
+ * Input: urb = USB request block data structure
+ * state = the urb state
+ *
+ * Return: none
+ **************************************************************************/
+static inline void qu_seturbstate (struct urb * urb, int state)
+{
+ DBGFUNC ("enter qu_seturbstate\n");
+ urb->pipe &= ~0x1f;
+ urb->pipe |= state & 0x1f;
+}
+
+/***************************************************************************
+ * Function Name : qu_urbstate
+ *
+ * This function get the current state of the URB.
+ *
+ * Input: urb = USB request block data structure
+ *
+ * Return: none
+ **************************************************************************/
+static inline int qu_urbstate (struct urb * urb)
+{
+
+ DBGFUNC ("enter qu_urbstate\n");
+
+ return urb->pipe & 0x1f;
+}
+
+/***************************************************************************
+ * Function Name : qu_queue_active_urb
+ *
+ * This function adds the urb to the appropriate active urb list and set
+ * the urb state.
+ *
+ * There are four active lists: isochoronous list, interrupt list,
+ * control list, and bulk list.
+ *
+ * Input: hci = data structure for the host controller
+ * urb = USB request block data structure
+ * ed = endpoint descriptor
+ *
+ * Return: none
+ **************************************************************************/
+static inline void qu_queue_active_urb (hci_t * hci, struct urb * urb, epd_t * ed)
+{
+ int urb_state = 0;
+ DBGFUNC ("enter qu_queue_active_urb\n");
+ switch (usb_pipetype (urb->pipe)) {
+ case PIPE_CONTROL:
+ list_add (&urb->urb_list, &hci->ctrl_list);
+ urb_state = US_CTRL_SETUP;
+ break;
+
+ case PIPE_BULK:
+ list_add (&urb->urb_list, &hci->bulk_list);
+ if ((urb->transfer_flags & USB_ZERO_PACKET)
+ && urb->transfer_buffer_length > 0
+ &&
+ ((urb->transfer_buffer_length %
+ usb_maxpacket (urb->dev, urb->pipe,
+ usb_pipeout (urb->pipe))) == 0)) {
+ urb_state = US_BULK0;
+ }
+ break;
+
+ case PIPE_INTERRUPT:
+ urb->start_frame = hci->frame_number;
+ list_add (&urb->urb_list, &hci->intr_list);
+ break;
+
+ case PIPE_ISOCHRONOUS:
+ list_add (&urb->urb_list, &hci->iso_list);
+ break;
+ }
+
+#ifdef HC_URB_TIMEOUT
+ if (urb->timeout) {
+ ed->timeout.data = (unsigned long) urb;
+ ed->timeout.expires = urb->timeout + jiffies;
+ ed->timeout.function = qu_urb_timeout;
+ add_timer (&ed->timeout);
+ }
+#endif
+
+ qu_seturbstate (urb, urb_state);
+}
+
+/***************************************************************************
+ * Function Name : qu_queue_urb
+ *
+ * This function adds the urb to the endpoint descriptor list
+ *
+ * Input: hci = data structure for the host controller
+ * urb = USB request block data structure
+ *
+ * Return: none
+ **************************************************************************/
+static int qu_queue_urb (hci_t * hci, struct urb * urb)
+{
+ struct hci_device *hci_dev = usb_to_hci (urb->dev);
+ epd_t *ed = &hci_dev->ed[qu_pipeindex (urb->pipe)];
+
+ DBGFUNC ("Enter qu_queue_urb\n");
+
+ /* for ISOC transfers calculate start frame index */
+
+ if (usb_pipeisoc (urb->pipe) && urb->transfer_flags & USB_ISO_ASAP) {
+ urb->start_frame = ((ed->pipe_head) ? (ed->last_iso + 1) : hci_get_current_frame_number (urb-> dev) + 1) & 0xffff;
+ }
+
+ if (ed->pipe_head) {
+ __list_add (&urb->urb_list, ed->urb_queue.prev,
+ &(ed->urb_queue));
+ } else {
+ ed->pipe_head = urb;
+ qu_queue_active_urb (hci, urb, ed);
+ if (++hci->active_urbs == 1)
+ hc_start_int (hci);
+ }
+
+ return 0;
+}
+
+/***************************************************************************
+ * Function Name : qu_next_urb
+ *
+ * This function removes the URB from the queue and add the next URB to
+ * active list.
+ *
+ * Input: hci = data structure for the host controller
+ * urb = USB request block data structure
+ * resub_ok = resubmit flag
+ *
+ * Return: pointer to the next urb
+ **************************************************************************/
+static struct urb *qu_next_urb (hci_t * hci, struct urb * urb, int resub_ok)
+{
+ struct hci_device *hci_dev = usb_to_hci (urb->dev);
+ epd_t *ed = &hci_dev->ed[qu_pipeindex (urb->pipe)];
+
+ DBGFUNC ("enter qu_next_urb\n");
+ list_del (&urb->urb_list);
+ INIT_LIST_HEAD (&urb->urb_list);
+ if (ed->pipe_head == urb) {
+
+#ifdef HC_URB_TIMEOUT
+ if (urb->timeout)
+ del_timer (&ed->timeout);
+#endif
+
+ if (!--hci->active_urbs)
+ hc_stop_int (hci);
+
+ if (!list_empty (&ed->urb_queue)) {
+ urb = list_entry (ed->urb_queue.next, struct urb, urb_list);
+ list_del (&urb->urb_list);
+ INIT_LIST_HEAD (&urb->urb_list);
+ ed->pipe_head = urb;
+ qu_queue_active_urb (hci, urb, ed);
+ } else {
+ ed->pipe_head = NULL;
+ urb = NULL;
+ }
+ }
+ return urb;
+}
+
+/***************************************************************************
+ * Function Name : qu_return_urb
+ *
+ * This function is part of the return path.
+ *
+ * Input: hci = data structure for the host controller
+ * urb = USB request block data structure
+ * resub_ok = resubmit flag
+ *
+ * Return: pointer to the next urb
+ **************************************************************************/
+static struct urb *qu_return_urb (hci_t * hci, struct urb * urb, int resub_ok)
+{
+ struct urb *next_urb;
+
+ DBGFUNC ("enter qu_return_rub\n");
+ next_urb = qu_next_urb (hci, urb, resub_ok);
+ hcs_return_urb (hci, urb, resub_ok);
+ return next_urb;
+}
+
+/***************************************************************************
+ * Function Name : sh_scan_iso_urb_list
+ *
+ * This function goes throught the isochronous urb list and schedule the
+ * the transfer.
+ *
+ * Note: This function has not tested yet
+ *
+ * Input: hci = data structure for the host controller
+ * list_lh = pointer to the isochronous list
+ * frame_number = the frame number
+ *
+ * Return: 0 = unsuccessful; 1 = successful
+ **************************************************************************/
+static int sh_scan_iso_urb_list (hci_t * hci, struct list_head *list_lh,
+ int frame_number)
+{
+ struct list_head *lh = list_lh->next;
+ struct urb *urb;
+
+ DBGFUNC ("enter sh_scan_iso_urb_list\n");
+ hci->td_array->len = 0;
+
+ while (lh != list_lh) {
+ urb = list_entry (lh, struct urb, urb_list);
+ lh = lh->next;
+ if (((frame_number - urb->start_frame) & 0x7ff) <
+ urb->number_of_packets) {
+ if (!sh_add_packet (hci, urb)) {
+ return 0;
+ } else {
+ if (((frame_number -
+ urb->start_frame) & 0x7ff) > 0x400) {
+ if (qu_urbstate (urb) > 0)
+ urb = qu_return_urb (hci, urb, 1);
+ else
+ urb = qu_next_urb (hci, urb, 1);
+
+ if (lh == list_lh && urb)
+ lh = &urb->urb_list;
+ }
+ }
+ }
+ }
+ return 1;
+}
+
+/***************************************************************************
+ * Function Name : sh_scan_urb_list
+ *
+ * This function goes through the urb list and schedule the
+ * the transaction.
+ *
+ * Input: hci = data structure for the host controller
+ * list_lh = pointer to the isochronous list
+ *
+ * Return: 0 = unsuccessful; 1 = successful
+ **************************************************************************/
+static int sh_scan_urb_list (hci_t * hci, struct list_head *list_lh)
+{
+ struct list_head *lh = NULL;
+ struct urb *urb;
+
+ if (list_lh == NULL) {
+ DBGERR ("sh_scan_urb_list: error, list_lh == NULL\n");
+ }
+
+ DBGFUNC ("enter sh_scan_urb_list: frame# \n");
+
+ list_for_each (lh, list_lh) {
+ urb = list_entry (lh, struct urb, urb_list);
+ if (urb == NULL)
+ return 1;
+ if (!usb_pipeint (urb->pipe)
+ || (((hci->frame_number - urb->start_frame)
+ & 0x7ff) >= urb->interval)) {
+ DBGVERBOSE ("sh_scan_urb_list !INT: %d fr_no: %d int: %d pint: %d\n",
+ urb->start_frame, hci->frame_number, urb->interval,
+ usb_pipeint (urb->pipe));
+ if (!sh_add_packet (hci, urb)) {
+ return 0;
+ } else {
+ DBGVERBOSE ("INT: start: %d fr_no: %d int: %d pint: %d\n",
+ urb->start_frame, hci->frame_number,
+ urb->interval, usb_pipeint (urb->pipe));
+ urb->start_frame = hci->frame_number;
+ return 0;
+
+ }
+ }
+ }
+ return 1;
+}
+
+/***************************************************************************
+ * Function Name : sh_shedule_trans
+ *
+ * This function schedule the USB transaction.
+ * This function will process the endpoint in the following order:
+ * interrupt, control, and bulk.
+ *
+ * Input: hci = data structure for the host controller
+ * isSOF = flag indicate if Start Of Frame has occurred
+ *
+ * Return: 0
+ **************************************************************************/
+static int sh_schedule_trans (hci_t * hci, int isSOF)
+{
+ int units_left = 1;
+ struct list_head *lh;
+
+ if (hci == NULL) {
+ DBGERR ("sh_schedule_trans: hci == NULL\n");
+ return 0;
+ }
+ if (hci->td_array == NULL) {
+ DBGERR ("sh_schedule_trans: hci->td_array == NULL\n");
+ return 0;
+ }
+
+ if (hci->td_array->len != 0) {
+ DBGERR ("ERROR: schedule, hci->td_array->len = 0x%x, s/b: 0\n",
+ hci->td_array->len);
+ }
+
+ /* schedule the next available interrupt transfer or the next
+ * stage of the interrupt transfer */
+
+ if (hci->td_array->len == 0 && !list_empty (&hci->intr_list)) {
+ units_left = sh_scan_urb_list (hci, &hci->intr_list);
+ }
+
+ /* schedule the next available control transfer or the next
+ * stage of the control transfer */
+
+ if (hci->td_array->len == 0 && !list_empty (&hci->ctrl_list) && units_left > 0) {
+ units_left = sh_scan_urb_list (hci, &hci->ctrl_list);
+ }
+
+ /* schedule the next available bulk transfer or the next
+ * stage of the bulk transfer */
+
+ if (hci->td_array->len == 0 && !list_empty (&hci->bulk_list) && units_left > 0) {
+ sh_scan_urb_list (hci, &hci->bulk_list);
+
+ /* be fair to each BULK URB (move list head around)
+ * only when the new SOF happens */
+
+ lh = hci->bulk_list.next;
+ list_del (&hci->bulk_list);
+ list_add (&hci->bulk_list, lh);
+ }
+ return 0;
+}
+
+/***************************************************************************
+ * Function Name : sh_add_packet
+ *
+ * This function forms the packet and transmit the packet. This function
+ * will handle all endpoint type: isochoronus, interrupt, control, and
+ * bulk.
+ *
+ * Input: hci = data structure for the host controller
+ * urb = USB request block data structure
+ *
+ * Return: 0 = unsucessful; 1 = successful
+ **************************************************************************/
+static int sh_add_packet (hci_t * hci, struct urb * urb)
+{
+ __u8 *data = NULL;
+ int len = 0;
+ int toggle = 0;
+ int maxps = usb_maxpacket (urb->dev, urb->pipe, usb_pipeout (urb->pipe));
+ int endpoint = usb_pipeendpoint (urb->pipe);
+ int address = usb_pipedevice (urb->pipe);
+ int slow = (((urb->pipe) >> 26) & 1);
+ int out = usb_pipeout (urb->pipe);
+ int pid = 0;
+ int ret;
+ int i = 0;
+ int iso = 0;
+
+ DBGFUNC ("enter sh_add_packet\n");
+ if (maxps == 0)
+ maxps = 8;
+
+ /* calculate len, toggle bit and add the transaction */
+ switch (usb_pipetype (urb->pipe)) {
+ case PIPE_ISOCHRONOUS:
+ pid = out ? PID_OUT : PID_IN;
+ iso = 1;
+ i = hci->frame_number - urb->start_frame;
+ data = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
+ len = urb->iso_frame_desc[i].length;
+ break;
+
+ case PIPE_BULK: /* BULK and BULK0 */
+ case PIPE_INTERRUPT:
+ pid = out ? PID_OUT : PID_IN;
+ len = urb->transfer_buffer_length - urb->actual_length;
+ data = urb->transfer_buffer + urb->actual_length;
+ toggle = usb_gettoggle (urb->dev, endpoint, out);
+ break;
+
+ case PIPE_CONTROL:
+ switch (qu_urbstate (urb)) {
+ case US_CTRL_SETUP:
+ len = 8;
+ pid = PID_SETUP;
+ data = urb->setup_packet;
+ toggle = 0;
+ break;
+
+ case US_CTRL_DATA:
+ if (!hci->last_packet_nak) {
+ /* The last packet received is not a nak:
+ * reset the nak count
+ */
+
+ hci->nakCnt = 0;
+ }
+ if (urb->transfer_buffer_length != 0) {
+ pid = out ? PID_OUT : PID_IN;
+ len = urb->transfer_buffer_length - urb->actual_length;
+ data = urb->transfer_buffer + urb->actual_length;
+ toggle = (urb->actual_length & maxps) ? 0 : 1;
+ usb_settoggle (urb->dev,
+ usb_pipeendpoint (urb->pipe),
+ usb_pipeout (urb->pipe), toggle);
+ break;
+ } else {
+ /* correct state and fall through */
+ qu_seturbstate (urb, US_CTRL_ACK);
+ }
+
+ case US_CTRL_ACK:
+ len = 0;
+
+ /* reply in opposite direction */
+ pid = !out ? PID_OUT : PID_IN;
+ toggle = 1;
+ usb_settoggle (urb->dev, usb_pipeendpoint (urb->pipe),
+ usb_pipeout (urb->pipe), toggle);
+ break;
+ }
+ }
+
+ ret =
+ hc_add_trans (hci, len, data, toggle, maxps, slow, endpoint,
+ address, pid, iso, qu_urbstate (urb));
+
+ DBGVERBOSE ("transfer_pa: addr:%d ep:%d pid:%x tog:%x iso:%x sl:%x "
+ "max:%d\n len:%d ret:%d data:%p left:%d\n",
+ address, endpoint, pid, toggle, iso, slow,
+ maxps, len, ret, data, hci->hp.units_left);
+
+ if (ret >= 0) {
+ hci->td_array->td[hci->td_array->len].urb = urb;
+ hci->td_array->td[hci->td_array->len].len = ret;
+ hci->td_array->td[hci->td_array->len].iso_index = i;
+ hci->td_array->len++;
+ hci->active_trans = 1;
+ return 1;
+ }
+ return 0;
+}
+
+/***************************************************************************
+ * Function Name : cc_to_error
+ *
+ * This function maps the SL811HS hardware error code to the linux USB error
+ * code.
+ *
+ * Input: cc = hardware error code
+ *
+ * Return: USB error code
+ **************************************************************************/
+static int cc_to_error (int cc)
+{
+ int errCode = 0;
+ if (cc & SL11H_STATMASK_ERROR) {
+ errCode |= -EILSEQ;
+ } else if (cc & SL11H_STATMASK_OVF) {
+ errCode |= -EOVERFLOW;
+ } else if (cc & SL11H_STATMASK_STALL) {
+ errCode |= -EPIPE;
+ }
+ return errCode;
+}
+
+/***************************************************************************
+ * Function Name : sh_done_list
+ *
+ * This function process the packet when it has done finish transfer.
+ *
+ * 1) It handles hardware error
+ * 2) It updates the URB state
+ * 3) If the USB transaction is complete, it start the return stack path.
+ *
+ * Input: hci = data structure for the host controller
+ * isExcessNak = flag tells if there excess NAK condition occurred
+ *
+ * Return: urb_state or -1 if the transaction has complete
+ **************************************************************************/
+static int sh_done_list (hci_t * hci, int *isExcessNak)
+{
+ int actbytes = 0;
+ int active = 0;
+ void *data = NULL;
+ int cc;
+ int maxps;
+ int toggle;
+ struct urb *urb;
+ int urb_state = 0;
+ int ret = 1; /* -1 parse abbort, 1 parse ok, 0 last element */
+ int trans = 0;
+ int len;
+ int iso_index = 0;
+ int out;
+ int pid = 0;
+ int debugLen = 0;
+
+ *isExcessNak = 0;
+
+ DBGFUNC ("enter sh_done_list: td_array->len = 0x%x\n",
+ hci->td_array->len);
+
+ debugLen = hci->td_array->len;
+ if (debugLen > 1)
+ DBGERR ("sh_done_list: td_array->len = 0x%x > 1\n",
+ hci->td_array->len);
+
+ for (trans = 0; ret && trans < hci->td_array->len && trans < MAX_TRANS;
+ trans++) {
+ urb = hci->td_array->td[trans].urb;
+ len = hci->td_array->td[trans].len;
+ out = usb_pipeout (urb->pipe);
+
+ if (usb_pipeisoc (urb->pipe)) {
+ iso_index = hci->td_array->td[trans].iso_index;
+ data = urb->transfer_buffer + urb->iso_frame_desc[iso_index].offset;
+ toggle = 0;
+ } else {
+ data = urb->transfer_buffer + urb->actual_length;
+ toggle = usb_gettoggle (urb->dev,
+ usb_pipeendpoint (urb->pipe),
+ usb_pipeout (urb->pipe));
+
+ }
+ urb_state = qu_urbstate (urb);
+ pid = out ? PID_OUT : PID_IN;
+ ret = hc_parse_trans (hci, &actbytes, data, &cc, &toggle, len,
+ pid, urb_state);
+ maxps = usb_maxpacket (urb->dev, urb->pipe, usb_pipeout (urb->pipe));
+
+ if (maxps == 0)
+ maxps = 8;
+
+ active = (urb_state != US_CTRL_SETUP) && (actbytes && !(actbytes & (maxps - 1)));
+
+ /* If the transfer is not bulk in, then it is necessary to get all
+ * data specify by the urb->transfer_len.
+ */
+
+ if (!(usb_pipebulk (urb->pipe) && usb_pipein (urb->pipe)))
+ active = active && (urb->transfer_buffer_length != urb->actual_length + actbytes);
+
+ if (urb->transfer_buffer_length == urb->actual_length + actbytes)
+ active = 0;
+
+ if ((cc &
+ (SL11H_STATMASK_ERROR | SL11H_STATMASK_TMOUT |
+ SL11H_STATMASK_OVF | SL11H_STATMASK_STALL))
+ && !(cc & SL11H_STATMASK_NAK)) {
+ if (++urb->error_count > 3) {
+ DBGERR ("done_list: excessive error: errcount = 0x%x, cc = 0x%x\n",
+ urb->error_count, cc);
+ urb_state = 0;
+ active = 0;
+ } else {
+ DBGERR ("done_list: packet err, cc = 0x%x, "
+ " urb->length = 0x%x, actual_len = 0x%x,"
+ " urb_state =0x%x\n",
+ cc, urb->transfer_buffer_length,
+ urb->actual_length, urb_state);
+// if (cc & SL11H_STATMASK_STALL) {
+ /* The USB function is STALLED on a control pipe (0),
+ * then it needs to send the SETUP command again to
+ * clear the STALL condition
+ */
+
+// if (usb_pipeendpoint (urb->pipe) == 0) {
+// urb_state = 2;
+// active = 0;
+// }
+// } else
+ active = 1;
+ }
+ } else {
+ if (cc & SL11H_STATMASK_NAK) {
+ if (hci->nakCnt < 0x10000) {
+ hci->nakCnt++;
+ hci->last_packet_nak = 1;
+ active = 1;
+ *isExcessNak = 0;
+ } else {
+ DBGERR ("done_list: nak count exceed limit\n");
+ active = 0;
+ *isExcessNak = 1;
+ hci->nakCnt = 0;
+ }
+ } else {
+ hci->nakCnt = 0;
+ hci->last_packet_nak = 0;
+ }
+
+ if (urb_state != US_CTRL_SETUP) {
+ /* no error */
+ urb->actual_length += actbytes;
+ usb_settoggle (urb->dev,
+ usb_pipeendpoint (urb->pipe),
+ usb_pipeout (urb->pipe), toggle);
+ }
+ if (usb_pipeisoc (urb->pipe)) {
+ urb->iso_frame_desc[iso_index].actual_length = actbytes;
+ urb->iso_frame_desc[iso_index].status = cc_to_error (cc);
+ active = (iso_index < urb->number_of_packets);
+ }
+ }
+ if (!active) {
+ if (!urb_state) {
+ urb->status = cc_to_error (cc);
+ if (urb->status) {
+ DBGERR ("error on received packet: urb->status = 0x%x\n",
+ urb->status);
+ }
+ hci->td_array->len = 0;
+ qu_return_urb (hci, urb, 1);
+ return -1;
+ } else {
+ /* We do not want to decrement the urb_state if exceeded nak,
+ * because we need to finish the data stage of the control
+ * packet
+ */
+
+ if (!(*isExcessNak))
+ urb_state--;
+ qu_seturbstate (urb, urb_state);
+ }
+ }
+ }
+
+ if (urb_state < 0)
+ DBGERR ("ERROR: done_list, urb_state = %d, suppose > 0\n",
+ urb_state);
+ if (debugLen != hci->td_array->len) {
+ DBGERR ("ERROR: done_list, debugLen!= td_array->len,"
+ "debugLen = 0x%x, hci->td_array->len = 0x%x\n",
+ debugLen, hci->td_array->len);
+ }
+
+ hci->td_array->len = 0;
+
+ return urb_state;
+}
--- /dev/null
+/*-------------------------------------------------------------------------*/
+/* list of all controllers using this driver
+ * */
+
+static LIST_HEAD (hci_hcd_list);
+
+/* URB states (urb_state) */
+/* isoc, interrupt single state */
+
+/* bulk transfer main state and 0-length packet */
+#define US_BULK 0
+#define US_BULK0 1
+/* three setup states */
+#define US_CTRL_SETUP 2
+#define US_CTRL_DATA 1
+#define US_CTRL_ACK 0
+
+/*-------------------------------------------------------------------------*/
+/* HC private part of a device descriptor
+ * */
+
+#define NUM_EDS 32
+
+typedef struct epd {
+ struct urb *pipe_head;
+ struct list_head urb_queue;
+// int urb_state;
+ struct timer_list timeout;
+ int last_iso; /* timestamp of last queued ISOC transfer */
+
+} epd_t;
+
+struct hci_device {
+ epd_t ed[NUM_EDS];
+};
+
+/*-------------------------------------------------------------------------*/
+/* Virtual Root HUB
+ */
+
+#define usb_to_hci(usb) ((struct hci_device *)(usb)->hcpriv)
+
+struct virt_root_hub {
+ int devnum; /* Address of Root Hub endpoint */
+ void *urb; /* interrupt URB of root hub */
+ int send; /* active flag */
+ int interval; /* intervall of roothub interrupt transfers */
+ struct timer_list rh_int_timer; /* intervall timer for rh interrupt EP */
+};
+
+#if 1
+/* USB HUB CONSTANTS (not OHCI-specific; see hub.h and USB spec) */
+
+/* destination of request */
+#define RH_INTERFACE 0x01
+#define RH_ENDPOINT 0x02
+#define RH_OTHER 0x03
+
+#define RH_CLASS 0x20
+#define RH_VENDOR 0x40
+
+/* Requests: bRequest << 8 | bmRequestType */
+#define RH_GET_STATUS 0x0080
+#define RH_CLEAR_FEATURE 0x0100
+#define RH_SET_FEATURE 0x0300
+#define RH_SET_ADDRESS 0x0500
+#define RH_GET_DESCRIPTOR 0x0680
+#define RH_SET_DESCRIPTOR 0x0700
+#define RH_GET_CONFIGURATION 0x0880
+#define RH_SET_CONFIGURATION 0x0900
+#define RH_GET_STATE 0x0280
+#define RH_GET_INTERFACE 0x0A80
+#define RH_SET_INTERFACE 0x0B00
+#define RH_SYNC_FRAME 0x0C80
+/* Our Vendor Specific Request */
+#define RH_SET_EP 0x2000
+
+/* Hub port features */
+#define RH_PORT_CONNECTION 0x00
+#define RH_PORT_ENABLE 0x01
+#define RH_PORT_SUSPEND 0x02
+#define RH_PORT_OVER_CURRENT 0x03
+#define RH_PORT_RESET 0x04
+#define RH_PORT_POWER 0x08
+#define RH_PORT_LOW_SPEED 0x09
+
+#define RH_C_PORT_CONNECTION 0x10
+#define RH_C_PORT_ENABLE 0x11
+#define RH_C_PORT_SUSPEND 0x12
+#define RH_C_PORT_OVER_CURRENT 0x13
+#define RH_C_PORT_RESET 0x14
+
+/* Hub features */
+#define RH_C_HUB_LOCAL_POWER 0x00
+#define RH_C_HUB_OVER_CURRENT 0x01
+
+#define RH_DEVICE_REMOTE_WAKEUP 0x00
+#define RH_ENDPOINT_STALL 0x01
+
+#endif
+
+/*-------------------------------------------------------------------------*/
+/* struct for each HC
+ */
+
+#define MAX_TRANS 32
+
+typedef struct td {
+ struct urb *urb;
+ __u16 len;
+ __u16 iso_index;
+} td_t;
+
+typedef struct td_array {
+ int len;
+ td_t td[MAX_TRANS];
+} td_array_t;
+
+typedef struct hci {
+ struct virt_root_hub rh; /* roothub */
+ wait_queue_head_t waitq; /* deletion of URBs and devices needs a waitqueue */
+ int active; /* HC is operating */
+
+ struct list_head ctrl_list; /* set of ctrl endpoints */
+ struct list_head bulk_list; /* set of bulk endpoints */
+ struct list_head iso_list; /* set of isoc endpoints */
+ struct list_head intr_list; /* ordered (tree) set of int endpoints */
+ struct list_head del_list; /* set of entpoints to be deleted */
+
+ td_array_t *td_array;
+ td_array_t a_td_array;
+ td_array_t i_td_array[2];
+
+ struct list_head hci_hcd_list; /* list of all hci_hcd */
+ struct usb_bus *bus; /* our bus */
+
+// int trans; /* number of transactions pending */
+ int active_urbs;
+ int active_trans;
+ int frame_number; /* frame number */
+ hcipriv_t hp; /* individual part of hc type */
+ int nakCnt;
+ int last_packet_nak;
+
+} hci_t;
+
+/*-------------------------------------------------------------------------*/
+/* condition (error) CC codes and mapping OHCI like
+ */
+
+#define TD_CC_NOERROR 0x00
+#define TD_CC_CRC 0x01
+#define TD_CC_BITSTUFFING 0x02
+#define TD_CC_DATATOGGLEM 0x03
+#define TD_CC_STALL 0x04
+#define TD_DEVNOTRESP 0x05
+#define TD_PIDCHECKFAIL 0x06
+#define TD_UNEXPECTEDPID 0x07
+#define TD_DATAOVERRUN 0x08
+#define TD_DATAUNDERRUN 0x09
+#define TD_BUFFEROVERRUN 0x0C
+#define TD_BUFFERUNDERRUN 0x0D
+#define TD_NOTACCESSED 0x0F
+
+
+/* urb interface functions */
+static int hci_get_current_frame_number (struct usb_device *usb_dev);
+static int hci_unlink_urb (struct urb * urb);
+
+static int qu_queue_urb (hci_t * hci, struct urb * urb);
+
+/* root hub */
+static int rh_init_int_timer (struct urb * urb);
+static int rh_submit_urb (struct urb * urb);
+static int rh_unlink_urb (struct urb * urb);
+
+/* schedule functions */
+static int sh_add_packet (hci_t * hci, struct urb * urb);
+
+/* hc specific functions */
+static inline void hc_flush_data_cache (hci_t * hci, void *data, int len);
+static inline int hc_parse_trans (hci_t * hci, int *actbytes, __u8 * data,
+ int *cc, int *toggle, int length, int pid,
+ int urb_state);
+static inline int hc_add_trans (hci_t * hci, int len, void *data, int toggle,
+ int maxps, int slow, int endpoint, int address,
+ int pid, int format, int urb_state);
+
+static void hc_start_int (hci_t * hci);
+static void hc_stop_int (hci_t * hci);
+static void SL811Write (hci_t * hci, char offset, char data);
+
+/* debug| print the main components of an URB
+ * small: 0) header + data packets 1) just header */
+
+static void urb_print (struct urb * urb, char *str, int small)
+{
+ unsigned int pipe = urb->pipe;
+ int i, len;
+
+ if (!urb->dev || !urb->dev->bus) {
+ dbg ("%s URB: no dev", str);
+ return;
+ }
+
+ printk ("%s URB:[%4x] dev:%2d,ep:%2d-%c,type:%s,flags:%4x,len:%d/%d,stat:%d(%x)\n",
+ str, hci_get_current_frame_number (urb->dev),
+ usb_pipedevice (pipe), usb_pipeendpoint (pipe),
+ usb_pipeout (pipe) ? 'O' : 'I',
+ usb_pipetype (pipe) < 2 ? (usb_pipeint (pipe) ? "INTR" : "ISOC")
+ : (usb_pipecontrol (pipe) ? "CTRL" : "BULK"), urb->transfer_flags,
+ urb->actual_length, urb->transfer_buffer_length, urb->status,
+ urb->status);
+ if (!small) {
+ if (usb_pipecontrol (pipe)) {
+ printk (__FILE__ ": cmd(8):");
+ for (i = 0; i < 8; i++)
+ printk (" %02x", ((__u8 *) urb->setup_packet)[i]);
+ printk ("\n");
+ }
+ if (urb->transfer_buffer_length > 0 && urb->transfer_buffer) {
+ printk (__FILE__ ": data(%d/%d):", urb->actual_length,
+ urb->transfer_buffer_length);
+ len = usb_pipeout (pipe) ? urb-> transfer_buffer_length : urb->actual_length;
+ for (i = 0; i < 2096 && i < len; i++)
+ printk (" %02x", ((__u8 *) urb->transfer_buffer)[i]);
+ printk ("%s stat:%d\n", i < len ? "..." : "",
+ urb->status);
+ }
+ }
+}
--- /dev/null
+/*-------------------------------------------------------------------------*/
+/*-------------------------------------------------------------------------*
+ * SL811HS USB HCD for Linux Version 0.1 (10/28/2001)
+ *
+ * requires (includes) hc_simple.[hc] simple generic HCD frontend
+ *
+ * COPYRIGHT(C) 2001 by CYPRESS SEMICONDUCTOR INC.
+ *
+ *-------------------------------------------------------------------------*
+ * 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 <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/malloc.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/smp_lock.h>
+#include <linux/list.h>
+#include <linux/ioport.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+
+#include <linux/usb.h>
+#include "../core/hcd.h"
+
+#undef HC_URB_TIMEOUT
+#undef HC_SWITCH_INT
+#undef HC_ENABLE_ISOC
+
+#define SL811_DEBUG_ERR
+
+#ifdef SL811_DEBUG_ERR
+#define DBGERR(fmt, args...) printk(fmt,## args)
+#else
+#define DBGERR(fmt, args...)
+#endif
+
+#ifdef SL811_DEBUG
+#define DBG(fmt, args...) printk(fmt,## args)
+#else
+#define DBG(fmt, args...)
+#endif
+
+#ifdef SL811_DEBUG_FUNC
+#define DBGFUNC(fmt, args...) printk(fmt,## args)
+#else
+#define DBGFUNC(fmt, args...)
+#endif
+
+#ifdef SL811_DEBUG_DATA
+#define DBGDATAR(fmt, args...) printk(fmt,## args)
+#define DBGDATAW(fmt, args...) printk(fmt,## args)
+#else
+#define DBGDATAR(fmt, args...)
+#define DBGDATAW(fmt, args...)
+#endif
+
+#ifdef SL811_DEBUG_VERBOSE
+#define DBGVERBOSE(fmt, args...) printk(fmt,## args)
+#else
+#define DBGVERBOSE(fmt, args...)
+#endif
+
+#define TRUE 1
+#define FALSE 0
+
+#define HC_SWITCH_INT
+#include "hc_sl811.h"
+#include "hc_simple.h"
+
+static int urb_debug = 0;
+
+#include "hc_simple.c"
+#include "hc_sl811_rh.c"
+
+/* The base_addr, data_reg_addr, and irq number are board specific.
+ * The current values are design to run on the Accelent SA1110 IDP
+ * NOTE: values need to modify for different development boards
+ */
+
+static int base_addr = 0xd3800000;
+static int data_reg_addr = 0xd3810000;
+static int irq = 34;
+
+/* forware declaration */
+
+int SL11StartXaction (hci_t * hci, __u8 addr, __u8 epaddr, int pid, int len,
+ int toggle, int slow, int urb_state);
+
+static int sofWaitCnt = 0;
+
+MODULE_PARM (urb_debug, "i");
+MODULE_PARM_DESC (urb_debug, "debug urb messages, default is 0 (no)");
+
+MODULE_PARM (base_addr, "i");
+MODULE_PARM_DESC (base_addr, "sl811 base address 0xd3800000");
+MODULE_PARM (data_reg_addr, "i");
+MODULE_PARM_DESC (data_reg_addr, "sl811 data register address 0xd3810000");
+MODULE_PARM (irq, "i");
+MODULE_PARM_DESC (irq, "IRQ 34 (default)");
+
+static int hc_reset (hci_t * hci);
+
+/***************************************************************************
+ * Function Name : SL811Read
+ *
+ * Read a byte of data from the SL811H/SL11H
+ *
+ * Input: hci = data structure for the host controller
+ * offset = address of SL811/SL11H register or memory
+ *
+ * Return: data
+ **************************************************************************/
+char SL811Read (hci_t * hci, char offset)
+{
+ hcipriv_t *hp = &hci->hp;
+ char data;
+ writeb (offset, hp->hcport);
+ wmb ();
+ data = readb (hp->hcport2);
+ rmb ();
+ return (data);
+}
+
+/***************************************************************************
+ * Function Name : SL811Write
+ *
+ * Write a byte of data to the SL811H/SL11H
+ *
+ * Input: hci = data structure for the host controller
+ * offset = address of SL811/SL11H register or memory
+ * data = the data going to write to SL811H
+ *
+ * Return: none
+ **************************************************************************/
+void SL811Write (hci_t * hci, char offset, char data)
+{
+ hcipriv_t *hp = &hci->hp;
+ writeb (offset, hp->hcport);
+ writeb (data, hp->hcport2);
+ wmb ();
+}
+
+/***************************************************************************
+ * Function Name : SL811BufRead
+ *
+ * Read consecutive bytes of data from the SL811H/SL11H buffer
+ *
+ * Input: hci = data structure for the host controller
+ * offset = SL811/SL11H register offset
+ * buf = the buffer where the data will store
+ * size = number of bytes to read
+ *
+ * Return: none
+ **************************************************************************/
+void SL811BufRead (hci_t * hci, short offset, char *buf, short size)
+{
+ hcipriv_t *hp = &hci->hp;
+ if (size <= 0)
+ return;
+ writeb ((char) offset, hp->hcport);
+ wmb ();
+ DBGDATAR ("SL811BufRead: offset = 0x%x, data = ", offset);
+ while (size--) {
+ *buf++ = (char) readb (hp->hcport2);
+ DBGDATAR ("0x%x ", *(buf - 1));
+ rmb ();
+ }
+ DBGDATAR ("\n");
+}
+
+/***************************************************************************
+ * Function Name : SL811BufWrite
+ *
+ * Write consecutive bytes of data to the SL811H/SL11H buffer
+ *
+ * Input: hci = data structure for the host controller
+ * offset = SL811/SL11H register offset
+ * buf = the data buffer
+ * size = number of bytes to write
+ *
+ * Return: none
+ **************************************************************************/
+void SL811BufWrite (hci_t * hci, short offset, char *buf, short size)
+{
+ hcipriv_t *hp = &hci->hp;
+ if (size <= 0)
+ return;
+ writeb ((char) offset, hp->hcport);
+ wmb ();
+ DBGDATAW ("SL811BufWrite: offset = 0x%x, data = ", offset);
+ while (size--) {
+ DBGDATAW ("0x%x ", *buf);
+ writeb (*buf, hp->hcport2);
+ wmb ();
+ buf++;
+ }
+ DBGDATAW ("\n");
+}
+
+/***************************************************************************
+ * Function Name : regTest
+ *
+ * This routine test the Read/Write functionality of SL811HS registers
+ *
+ * 1) Store original register value into a buffer
+ * 2) Write to registers with a RAMP pattern. (10, 11, 12, ..., 255)
+ * 3) Read from register
+ * 4) Compare the written value with the read value and make sure they are
+ * equivalent
+ * 5) Restore the original register value
+ *
+ * Input: hci = data structure for the host controller
+ *
+ *
+ * Return: TRUE = passed; FALSE = failed
+ **************************************************************************/
+int regTest (hci_t * hci)
+{
+ int i, data, result = TRUE;
+ char buf[256];
+
+ DBGFUNC ("Enter regTest\n");
+ for (i = 0x10; i < 256; i++) {
+ /* save the original buffer */
+ buf[i] = (char) SL811Read (hci, i);
+
+ /* Write the new data to the buffer */
+ SL811Write (hci, i, i);
+ }
+
+ /* compare the written data */
+ for (i = 0x10; i < 256; i++) {
+ data = SL811Read (hci, i);
+ if (data != i) {
+ DBGERR ("Pattern test failed!! value = 0x%x, s/b 0x%x\n",
+ data, i);
+ result = FALSE;
+ }
+ }
+
+ /* restore the data */
+ for (i = 0x10; i < 256; i++) {
+ SL811Write (hci, i, buf[i]);
+ }
+
+ return (result);
+}
+
+/***************************************************************************
+ * Function Name : regShow
+ *
+ * Display all SL811HS register values
+ *
+ * Input: hci = data structure for the host controller
+ *
+ * Return: none
+ **************************************************************************/
+void regShow (hci_t * hci)
+{
+ int i;
+ for (i = 0; i < 256; i++) {
+ printk ("offset %d: 0x%x\n", i, SL811Read (hci, i));
+ }
+}
+
+/************************************************************************
+ * Function Name : USBReset
+ *
+ * This function resets SL811HS controller and detects the speed of
+ * the connecting device
+ *
+ * Input: hci = data structure for the host controller
+ *
+ * Return: 0 = no device attached; 1 = USB device attached
+ *
+ ***********************************************************************/
+static int USBReset (hci_t * hci)
+{
+ int status;
+ hcipriv_t *hp = &hci->hp;
+
+ DBGFUNC ("enter USBReset\n");
+
+ SL811Write (hci, SL11H_CTLREG2, 0xae);
+
+ // setup master and full speed
+
+ SL811Write (hci, SL11H_CTLREG1, 0x08); // reset USB
+ mdelay (20); // 20ms
+ SL811Write (hci, SL11H_CTLREG1, 0); // remove SE0
+
+ for (status = 0; status < 100; status++)
+ SL811Write (hci, SL11H_INTSTATREG, 0xff); // clear all interrupt bits
+
+ status = SL811Read (hci, SL11H_INTSTATREG);
+
+ if (status & 0x40) // Check if device is removed
+ {
+ DBG ("USBReset: Device removed\n");
+ SL811Write (hci, SL11H_INTENBLREG,
+ SL11H_INTMASK_XFERDONE | SL11H_INTMASK_SOFINTR |
+ SL11H_INTMASK_INSRMV);
+ hp->RHportStatus->portStatus &=
+ ~(PORT_CONNECT_STAT | PORT_ENABLE_STAT);
+
+ return 0;
+ }
+
+ SL811Write (hci, SL11H_BUFLNTHREG_B, 0); //zero lenth
+ SL811Write (hci, SL11H_PIDEPREG_B, 0x50); //send SOF to EP0
+ SL811Write (hci, SL11H_DEVADDRREG_B, 0x01); //address0
+ SL811Write (hci, SL11H_SOFLOWREG, 0xe0);
+
+ if (!(status & 0x80)) {
+ /* slow speed device connect directly to root-hub */
+
+ DBG ("USBReset: low speed Device attached\n");
+ SL811Write (hci, SL11H_CTLREG1, 0x8);
+ mdelay (20);
+ SL811Write (hci, SL11H_SOFTMRREG, 0xee);
+ SL811Write (hci, SL11H_CTLREG1, 0x21);
+
+ /* start the SOF or EOP */
+
+ SL811Write (hci, SL11H_HOSTCTLREG_B, 0x01);
+ hp->RHportStatus->portStatus |=
+ (PORT_CONNECT_STAT | PORT_LOW_SPEED_DEV_ATTACH_STAT);
+
+ /* clear all interrupt bits */
+
+ for (status = 0; status < 20; status++)
+ SL811Write (hci, SL11H_INTSTATREG, 0xff);
+ } else {
+ /* full speed device connect directly to root hub */
+
+ DBG ("USBReset: full speed Device attached\n");
+ SL811Write (hci, SL11H_CTLREG1, 0x8);
+ mdelay (20);
+ SL811Write (hci, SL11H_SOFTMRREG, 0xae);
+ SL811Write (hci, SL11H_CTLREG1, 0x01);
+
+ /* start the SOF or EOP */
+
+ SL811Write (hci, SL11H_HOSTCTLREG_B, 0x01);
+ hp->RHportStatus->portStatus |= (PORT_CONNECT_STAT);
+ hp->RHportStatus->portStatus &= ~PORT_LOW_SPEED_DEV_ATTACH_STAT;
+
+ /* clear all interrupt bits */
+
+ SL811Write (hci, SL11H_INTSTATREG, 0xff);
+
+ }
+
+ /* enable all interrupts */
+ SL811Write (hci, SL11H_INTENBLREG,
+ SL11H_INTMASK_XFERDONE | SL11H_INTMASK_SOFINTR |
+ SL11H_INTMASK_INSRMV);
+
+ return 1;
+}
+
+/*-------------------------------------------------------------------------*/
+/* tl functions */
+static inline void hc_mark_last_trans (hci_t * hci)
+{
+ hcipriv_t *hp = &hci->hp;
+ __u8 *ptd = hp->tl;
+
+ dbg ("enter hc_mark_last_trans\n");
+ if (ptd == NULL) {
+ printk ("hc_mark_last_trans: ptd = null\n");
+ return;
+ }
+ if (hp->xferPktLen > 0)
+ *(ptd + hp->tl_last) |= (1 << 3);
+}
+
+static inline void hc_flush_data_cache (hci_t * hci, void *data, int len)
+{
+}
+
+/************************************************************************
+ * Function Name : hc_add_trans
+ *
+ * This function sets up the SL811HS register and transmit the USB packets.
+ *
+ * 1) Determine if enough time within the current frame to send the packet
+ * 2) Load the data into the SL811HS register
+ * 3) Set the appropriate command to the register and trigger the transmit
+ *
+ * Input: hci = data structure for the host controller
+ * len = data length
+ * data = transmitting data
+ * toggle = USB toggle bit, either 0 or 1
+ * maxps = maximum packet size for this endpoint
+ * slow = speed of the device
+ * endpoint = endpoint number
+ * address = USB address of the device
+ * pid = packet ID
+ * format =
+ * urb_state = the current stage of USB transaction
+ *
+ * Return: 0 = no time left to schedule the transfer
+ * 1 = success
+ *
+ ***********************************************************************/
+static inline int hc_add_trans (hci_t * hci, int len, void *data, int toggle,
+ int maxps, int slow, int endpoint, int address,
+ int pid, int format, int urb_state)
+{
+ hcipriv_t *hp = &hci->hp;
+ __u16 speed;
+ int ii, jj, kk;
+
+ DBGFUNC ("enter hc_addr_trans: len =0x%x, toggle:0x%x, endpoing:0x%x,"
+ " addr:0x%x, pid:0x%x,format:0x%x\n", len, toggle, endpoint,
+ i address, pid, format);
+
+ if (len > maxps) {
+ len = maxps;
+ }
+
+ speed = hp->RHportStatus->portStatus;
+ if (speed & PORT_LOW_SPEED_DEV_ATTACH_STAT) {
+// ii = (8*7*8 + 6*3) * len + 800;
+ ii = 8 * 8 * len + 1024;
+ } else {
+ if (slow) {
+// ii = (8*7*8 + 6*3) * len + 800;
+ ii = 8 * 8 * len + 2048;
+ } else
+// ii = (8*7 + 6*3)*len + 110;
+ ii = 8 * len + 256;
+ }
+
+ ii += 2 * 10 * len;
+
+ jj = SL811Read (hci, SL11H_SOFTMRREG);
+ kk = (jj & 0xFF) * 64 - ii;
+
+ if (kk < 0) {
+ DBGVERBOSE
+ ("hc_add_trans: no bandwidth for schedule, ii = 0x%x,"
+ "jj = 0x%x, len =0x%x, active_trans = 0x%x\n", ii, jj, len,
+ hci->active_trans);
+ return (-1);
+ }
+
+ if (pid != PID_IN) {
+ /* Load data into hc */
+
+ SL811BufWrite (hci, SL11H_DATA_START, (__u8 *) data, len);
+ }
+
+ /* transmit */
+
+ SL11StartXaction (hci, (__u8) address, (__u8) endpoint, (__u8) pid, len,
+ toggle, slow, urb_state);
+
+ return len;
+}
+
+/************************************************************************
+ * Function Name : hc_parse_trans
+ *
+ * This function checks the status of the transmitted or received packet
+ * and copy the data from the SL811HS register into a buffer.
+ *
+ * 1) Check the status of the packet
+ * 2) If successful, and IN packet then copy the data from the SL811HS register
+ * into a buffer
+ *
+ * Input: hci = data structure for the host controller
+ * actbytes = pointer to actual number of bytes
+ * data = data buffer
+ * cc = packet status
+ * length = the urb transmit length
+ * pid = packet ID
+ * urb_state = the current stage of USB transaction
+ *
+ * Return: 0
+ ***********************************************************************/
+static inline int hc_parse_trans (hci_t * hci, int *actbytes, __u8 * data,
+ int *cc, int *toggle, int length, int pid,
+ int urb_state)
+{
+ __u8 addr;
+ __u8 len;
+
+ DBGFUNC ("enter hc_parse_trans\n");
+
+ /* get packet status; convert ack rcvd to ack-not-rcvd */
+
+ *cc = (int) SL811Read (hci, SL11H_PKTSTATREG);
+
+ if (*cc &
+ (SL11H_STATMASK_ERROR | SL11H_STATMASK_TMOUT | SL11H_STATMASK_OVF |
+ SL11H_STATMASK_NAK | SL11H_STATMASK_STALL)) {
+ if (*cc & SL11H_STATMASK_OVF)
+ DBGERR ("parse trans: error recv ack, cc = 0x%x, TX_BASE_Len = "
+ "0x%x, TX_count=0x%x\n", *cc,
+ SL811Read (hci, SL11H_BUFLNTHREG),
+ SL811Read (hci, SL11H_XFERCNTREG));
+
+ } else {
+ DBGVERBOSE ("parse trans: recv ack, cc = 0x%x, len = 0x%x, \n",
+ *cc, length);
+
+ /* Successful data */
+ if ((pid == PID_IN) && (urb_state != US_CTRL_SETUP)) {
+
+ /* Find the base address */
+ addr = SL811Read (hci, SL11H_BUFADDRREG);
+
+ /* Find the Transmit Length */
+ len = SL811Read (hci, SL11H_BUFLNTHREG);
+
+ /* The actual data length = xmit length reg - xfer count reg */
+ *actbytes = len - SL811Read (hci, SL11H_XFERCNTREG);
+
+ if ((data != NULL) && (*actbytes > 0)) {
+ SL811BufRead (hci, addr, data, *actbytes);
+
+ } else if ((data == NULL) && (*actbytes <= 0)) {
+ DBGERR ("hc_parse_trans: data = NULL or actbyte = 0x%x\n",
+ *actbytes);
+ return 0;
+ }
+ } else if (pid == PID_OUT) {
+ *actbytes = length;
+ } else {
+ // printk ("ERR:parse_trans, pid != IN or OUT, pid = 0x%x\n", pid);
+ }
+ *toggle = !*toggle;
+ }
+
+ return 0;
+}
+
+/************************************************************************
+ * Function Name : hc_start_int
+ *
+ * This function enables SL811HS interrupts
+ *
+ * Input: hci = data structure for the host controller
+ *
+ * Return: none
+ ***********************************************************************/
+static void hc_start_int (hci_t * hci)
+{
+#ifdef HC_SWITCH_INT
+ int mask =
+ SL11H_INTMASK_XFERDONE | SL11H_INTMASK_SOFINTR |
+ SL11H_INTMASK_INSRMV | SL11H_INTMASK_USBRESET;
+ SL811Write (hci, IntEna, mask);
+#endif
+}
+
+/************************************************************************
+ * Function Name : hc_stop_int
+ *
+ * This function disables SL811HS interrupts
+ *
+ * Input: hci = data structure for the host controller
+ *
+ * Return: none
+ ***********************************************************************/
+static void hc_stop_int (hci_t * hci)
+{
+#ifdef HC_SWITCH_INT
+ SL811Write (hci, SL11H_INTSTATREG, 0xff);
+// SL811Write(hci, SL11H_INTENBLREG, SL11H_INTMASK_INSRMV);
+
+#endif
+}
+
+/************************************************************************
+ * Function Name : handleInsRmvIntr
+ *
+ * This function handles the insertion or removal of device on SL811HS.
+ * It resets the controller and updates the port status
+ *
+ * Input: hci = data structure for the host controller
+ *
+ * Return: none
+ ***********************************************************************/
+void handleInsRmvIntr (hci_t * hci)
+{
+ hcipriv_t *hp = &hci->hp;
+
+ USBReset (hci);
+
+ /* Changes in connection status */
+
+ hp->RHportStatus->portChange |= PORT_CONNECT_CHANGE;
+
+ /* Port Enable or Disable */
+
+ if (hp->RHportStatus->portStatus & PORT_CONNECT_STAT) {
+ /* device is connected to the port:
+ * 1) Enable port
+ * 2) Resume ??
+ */
+// hp->RHportStatus->portChange |= PORT_ENABLE_CHANGE;
+
+ /* Over Current is not supported by the SL811 HW ?? */
+
+ /* How about the Port Power ?? */
+
+ } else {
+ /* Device has disconnect:
+ * 1) Disable port
+ */
+
+ hp->RHportStatus->portStatus &= ~(PORT_ENABLE_STAT);
+ hp->RHportStatus->portChange |= PORT_ENABLE_CHANGE;
+
+ }
+}
+
+/*****************************************************************
+ *
+ * Function Name: SL11StartXaction
+ *
+ * This functions load the registers with appropriate value and
+ * transmit the packet.
+ *
+ * Input: hci = data structure for the host controller
+ * addr = USB address of the device
+ * epaddr = endpoint number
+ * pid = packet ID
+ * len = data length
+ * toggle = USB toggle bit, either 0 or 1
+ * slow = speed of the device
+ * urb_state = the current stage of USB transaction
+ *
+ * Return: 0 = error; 1 = successful
+ *
+ *****************************************************************/
+int SL11StartXaction (hci_t * hci, __u8 addr, __u8 epaddr, int pid, int len,
+ int toggle, int slow, int urb_state)
+{
+
+ hcipriv_t *hp = &hci->hp;
+ __u8 cmd = 0;
+ __u8 setup_data[4];
+ __u16 speed;
+
+ speed = hp->RHportStatus->portStatus;
+ if (!(speed & PORT_LOW_SPEED_DEV_ATTACH_STAT) && slow) {
+ cmd |= SL11H_HCTLMASK_PREAMBLE;
+ }
+ switch (pid) {
+ case PID_SETUP:
+ cmd &= SL11H_HCTLMASK_PREAMBLE;
+ cmd |=
+ (SL11H_HCTLMASK_ARM | SL11H_HCTLMASK_ENBLEP |
+ SL11H_HCTLMASK_WRITE);
+ break;
+
+ case PID_OUT:
+ cmd &= (SL11H_HCTLMASK_SEQ | SL11H_HCTLMASK_PREAMBLE);
+ cmd |=
+ (SL11H_HCTLMASK_ARM | SL11H_HCTLMASK_ENBLEP |
+ SL11H_HCTLMASK_WRITE);
+ if (toggle) {
+ cmd |= SL11H_HCTLMASK_SEQ;
+ }
+ break;
+
+ case PID_IN:
+ cmd &= (SL11H_HCTLMASK_SEQ | SL11H_HCTLMASK_PREAMBLE);
+ cmd |= (SL11H_HCTLMASK_ARM | SL11H_HCTLMASK_ENBLEP);
+ break;
+
+ default:
+ DBGERR ("ERR: SL11StartXaction: unknow pid = 0x%x\n", pid);
+ return 0;
+ }
+ setup_data[0] = SL11H_DATA_START;
+ setup_data[1] = len;
+ setup_data[2] = (((pid & 0x0F) << 4) | (epaddr & 0xF));
+ setup_data[3] = addr & 0x7F;
+
+ SL811BufWrite (hci, SL11H_BUFADDRREG, (__u8 *) & setup_data[0], 4);
+
+ SL811Write (hci, SL11H_HOSTCTLREG, cmd);
+
+#if 0
+ /* The SL811 has a hardware flaw when hub devices sends out
+ * SE0 between packets. It has been found in a TI chipset and
+ * cypress hub chipset. It causes the SL811 to hang
+ * The workaround is to re-issue the preample again.
+ */
+
+ if ((cmd & SL11H_HCTLMASK_PREAMBLE)) {
+ SL811Write (hci, SL11H_PIDEPREG_B, 0xc0);
+ SL811Write (hci, SL11H_HOSTCTLREG_B, 0x1); // send the premable
+ }
+#endif
+ return 1;
+}
+
+/*****************************************************************
+ *
+ * Function Name: hc_interrupt
+ *
+ * Interrupt service routine.
+ *
+ * 1) determine the causes of interrupt
+ * 2) clears all interrupts
+ * 3) calls appropriate function to service the interrupt
+ *
+ * Input: irq = interrupt line associated with the controller
+ * hci = data structure for the host controller
+ * r = holds the snapshot of the processor's context before
+ * the processor entered interrupt code. (not used here)
+ *
+ * Return value : None.
+ *
+ *****************************************************************/
+static void hc_interrupt (int irq, void *__hci, struct pt_regs *r)
+{
+ char ii;
+ hci_t *hci = __hci;
+ int isExcessNak = 0;
+ int urb_state = 0;
+ char tmpIrq = 0;
+
+ /* Get value from interrupt status register */
+
+ ii = SL811Read (hci, SL11H_INTSTATREG);
+
+ if (ii & SL11H_INTMASK_INSRMV) {
+ /* Device insertion or removal detected for the USB port */
+
+ SL811Write (hci, SL11H_INTENBLREG, 0);
+ SL811Write (hci, SL11H_CTLREG1, 0);
+ mdelay (100); // wait for device stable
+ handleInsRmvIntr (hci);
+ return;
+ }
+
+ /* Clear all interrupts */
+
+ SL811Write (hci, SL11H_INTSTATREG, 0xff);
+
+ if (ii & SL11H_INTMASK_XFERDONE) {
+ /* USB Done interrupt occurred */
+
+ urb_state = sh_done_list (hci, &isExcessNak);
+#ifdef WARNING
+ if (hci->td_array->len > 0)
+ printk ("WARNING: IRQ, td_array->len = 0x%x, s/b:0\n",
+ hci->td_array->len);
+#endif
+ if (hci->td_array->len == 0 && !isExcessNak
+ && !(ii & SL11H_INTMASK_SOFINTR) && (urb_state == 0)) {
+ if (urb_state == 0) {
+ /* All urb_state has not been finished yet!
+ * continue with the current urb transaction
+ */
+
+ if (hci->last_packet_nak == 0) {
+ if (!usb_pipecontrol
+ (hci->td_array->td[0].urb->pipe))
+ sh_add_packet (hci, hci->td_array-> td[0].urb);
+ }
+ } else {
+ /* The last transaction has completed:
+ * schedule the next transaction
+ */
+
+ sh_schedule_trans (hci, 0);
+ }
+ }
+ SL811Write (hci, SL11H_INTSTATREG, 0xff);
+ return;
+ }
+
+ if (ii & SL11H_INTMASK_SOFINTR) {
+ hci->frame_number = (hci->frame_number + 1) % 2048;
+ if (hci->td_array->len == 0)
+ sh_schedule_trans (hci, 1);
+ else {
+ if (sofWaitCnt++ > 100) {
+ /* The last transaction has not completed.
+ * Need to retire the current td, and let
+ * it transmit again later on.
+ * (THIS NEEDS TO BE WORK ON MORE, IT SHOULD NEVER
+ * GET TO THIS POINT)
+ */
+
+ DBGERR ("SOF interrupt: td_array->len = 0x%x, s/b: 0\n",
+ hci->td_array->len);
+ urb_print (hci->td_array->td[hci->td_array->len - 1].urb,
+ "INTERRUPT", 0);
+ sh_done_list (hci, &isExcessNak);
+ SL811Write (hci, SL11H_INTSTATREG, 0xff);
+ hci->td_array->len = 0;
+ sofWaitCnt = 0;
+ }
+ }
+ tmpIrq = SL811Read (hci, SL11H_INTSTATREG) & SL811Read (hci, SL11H_INTENBLREG);
+ if (tmpIrq) {
+ DBG ("IRQ occurred while service SOF: irq = 0x%x\n",
+ tmpIrq);
+
+ /* If we receive a DONE IRQ after schedule, need to
+ * handle DONE IRQ again
+ */
+
+ if (tmpIrq & SL11H_INTMASK_XFERDONE) {
+ DBGERR ("IRQ occurred while service SOF: irq = 0x%x\n",
+ tmpIrq);
+ urb_state = sh_done_list (hci, &isExcessNak);
+ }
+ SL811Write (hci, SL11H_INTSTATREG, 0xff);
+ }
+ } else {
+ DBG ("SL811 ISR: unknown, int = 0x%x \n", ii);
+ }
+
+ SL811Write (hci, SL11H_INTSTATREG, 0xff);
+ return;
+}
+
+/*****************************************************************
+ *
+ * Function Name: hc_reset
+ *
+ * This function does register test and resets the SL811HS
+ * controller.
+ *
+ * Input: hci = data structure for the host controller
+ *
+ * Return value : 0
+ *
+ *****************************************************************/
+static int hc_reset (hci_t * hci)
+{
+ int attachFlag = 0;
+
+ DBGFUNC ("Enter hc_reset\n");
+ regTest (hci);
+ attachFlag = USBReset (hci);
+ if (attachFlag) {
+ setPortChange (hci, PORT_CONNECT_CHANGE);
+ }
+ return (0);
+}
+
+/*****************************************************************
+ *
+ * Function Name: hc_alloc_trans_buffer
+ *
+ * This function allocates all transfer buffer
+ *
+ * Input: hci = data structure for the host controller
+ *
+ * Return value : 0
+ *
+ *****************************************************************/
+static int hc_alloc_trans_buffer (hci_t * hci)
+{
+ hcipriv_t *hp = &hci->hp;
+ int maxlen;
+
+ hp->itl0_len = 0;
+ hp->itl1_len = 0;
+ hp->atl_len = 0;
+
+ hp->itl_buffer_len = 1024;
+ hp->atl_buffer_len = 4096 - 2 * hp->itl_buffer_len; /* 2048 */
+
+ maxlen = (hp->itl_buffer_len > hp->atl_buffer_len) ? hp->itl_buffer_len : hp->atl_buffer_len;
+
+ hp->tl = kmalloc (maxlen, GFP_KERNEL);
+
+ if (!hp->tl)
+ return -ENOMEM;
+
+ memset (hp->tl, 0, maxlen);
+ return 0;
+}
+
+/*****************************************************************
+ *
+ * Function Name: getPortStatusAndChange
+ *
+ * This function gets the ports status from SL811 and format it
+ * to a USB request format
+ *
+ * Input: hci = data structure for the host controller
+ *
+ * Return value : port status and change
+ *
+ *****************************************************************/
+static __u32 getPortStatusAndChange (hci_t * hci)
+{
+ hcipriv_t *hp = &hci->hp;
+ __u32 portstatus;
+
+ DBGFUNC ("enter getPorStatusAndChange\n");
+
+ portstatus = hp->RHportStatus->portChange << 16 | hp->RHportStatus->portStatus;
+
+ return (portstatus);
+}
+
+/*****************************************************************
+ *
+ * Function Name: setPortChange
+ *
+ * This function set the bit position of portChange.
+ *
+ * Input: hci = data structure for the host controller
+ * bitPos = the bit position
+ *
+ * Return value : none
+ *
+ *****************************************************************/
+static void setPortChange (hci_t * hci, __u16 bitPos)
+{
+ hcipriv_t *hp = &hci->hp;
+
+ switch (bitPos) {
+ case PORT_CONNECT_STAT:
+ hp->RHportStatus->portChange |= bitPos;
+ break;
+
+ case PORT_ENABLE_STAT:
+ hp->RHportStatus->portChange |= bitPos;
+ break;
+
+ case PORT_RESET_STAT:
+ hp->RHportStatus->portChange |= bitPos;
+ break;
+
+ case PORT_POWER_STAT:
+ hp->RHportStatus->portChange |= bitPos;
+ break;
+
+ case PORT_SUSPEND_STAT:
+ hp->RHportStatus->portChange |= bitPos;
+ break;
+
+ case PORT_OVER_CURRENT_STAT:
+ hp->RHportStatus->portChange |= bitPos;
+ break;
+ }
+}
+
+/*****************************************************************
+ *
+ * Function Name: clrPortChange
+ *
+ * This function clear the bit position of portChange.
+ *
+ * Input: hci = data structure for the host controller
+ * bitPos = the bit position
+ *
+ * Return value : none
+ *
+ *****************************************************************/
+static void clrPortChange (hci_t * hci, __u16 bitPos)
+{
+ hcipriv_t *hp = &hci->hp;
+ switch (bitPos) {
+ case PORT_CONNECT_CHANGE:
+ hp->RHportStatus->portChange &= ~bitPos;
+ break;
+
+ case PORT_ENABLE_CHANGE:
+ hp->RHportStatus->portChange &= ~bitPos;
+ break;
+
+ case PORT_RESET_CHANGE:
+ hp->RHportStatus->portChange &= ~bitPos;
+ break;
+
+ case PORT_SUSPEND_CHANGE:
+ hp->RHportStatus->portChange &= ~bitPos;
+ break;
+
+ case PORT_OVER_CURRENT_CHANGE:
+ hp->RHportStatus->portChange &= ~bitPos;
+ break;
+ }
+}
+
+/*****************************************************************
+ *
+ * Function Name: clrPortStatus
+ *
+ * This function clear the bit position of portStatus.
+ *
+ * Input: hci = data structure for the host controller
+ * bitPos = the bit position
+ *
+ * Return value : none
+ *
+ *****************************************************************/
+static void clrPortStatus (hci_t * hci, __u16 bitPos)
+{
+ hcipriv_t *hp = &hci->hp;
+ switch (bitPos) {
+ case PORT_ENABLE_STAT:
+ hp->RHportStatus->portStatus &= ~bitPos;
+ break;
+
+ case PORT_RESET_STAT:
+ hp->RHportStatus->portStatus &= ~bitPos;
+ break;
+
+ case PORT_POWER_STAT:
+ hp->RHportStatus->portStatus &= ~bitPos;
+ break;
+
+ case PORT_SUSPEND_STAT:
+ hp->RHportStatus->portStatus &= ~bitPos;
+ break;
+ }
+}
+
+/*****************************************************************
+ *
+ * Function Name: setPortStatus
+ *
+ * This function set the bit position of portStatus.
+ *
+ * Input: hci = data structure for the host controller
+ * bitPos = the bit position
+ *
+ * Return value : none
+ *
+ *****************************************************************/
+static void setPortStatus (hci_t * hci, __u16 bitPos)
+{
+ hcipriv_t *hp = &hci->hp;
+ switch (bitPos) {
+ case PORT_ENABLE_STAT:
+ hp->RHportStatus->portStatus |= bitPos;
+ break;
+
+ case PORT_RESET_STAT:
+ hp->RHportStatus->portStatus |= bitPos;
+ break;
+
+ case PORT_POWER_STAT:
+ hp->RHportStatus->portStatus |= bitPos;
+ break;
+
+ case PORT_SUSPEND_STAT:
+ hp->RHportStatus->portStatus |= bitPos;
+ break;
+ }
+}
+
+/*****************************************************************
+ *
+ * Function Name: hc_start
+ *
+ * This function starts the root hub functionality.
+ *
+ * Input: hci = data structure for the host controller
+ *
+ * Return value : 0
+ *
+ *****************************************************************/
+static int hc_start (hci_t * hci)
+{
+ DBGFUNC ("Enter hc_start\n");
+
+ rh_connect_rh (hci);
+
+ return 0;
+}
+
+/*****************************************************************
+ *
+ * Function Name: hc_alloc_hci
+ *
+ * This function allocates all data structure and store in the
+ * private data structure.
+ *
+ * Input: hci = data structure for the host controller
+ *
+ * Return value : 0
+ *
+ *****************************************************************/
+static hci_t *__devinit hc_alloc_hci (void)
+{
+ hci_t *hci;
+ hcipriv_t *hp;
+ portstat_t *ps;
+ struct usb_bus *bus;
+
+ DBGFUNC ("Enter hc_alloc_hci\n");
+ hci = (hci_t *) kmalloc (sizeof (hci_t), GFP_KERNEL);
+ if (!hci)
+ return NULL;
+
+ memset (hci, 0, sizeof (hci_t));
+
+ hp = &hci->hp;
+
+ hp->irq = -1;
+ hp->hcport = -1;
+
+ /* setup root hub port status */
+
+ ps = (portstat_t *) kmalloc (sizeof (portstat_t), GFP_KERNEL);
+
+ if (!ps)
+ return NULL;
+ ps->portStatus = PORT_STAT_DEFAULT;
+ ps->portChange = PORT_CHANGE_DEFAULT;
+ hp->RHportStatus = ps;
+
+ hci->nakCnt = 0;
+ hci->last_packet_nak = 0;
+
+ hci->a_td_array.len = 0;
+ hci->i_td_array[0].len = 0;
+ hci->i_td_array[1].len = 0;
+ hci->td_array = &hci->a_td_array;
+ hci->active_urbs = 0;
+ hci->active_trans = 0;
+ INIT_LIST_HEAD (&hci->hci_hcd_list);
+ list_add (&hci->hci_hcd_list, &hci_hcd_list);
+ init_waitqueue_head (&hci->waitq);
+
+ INIT_LIST_HEAD (&hci->ctrl_list);
+ INIT_LIST_HEAD (&hci->bulk_list);
+ INIT_LIST_HEAD (&hci->iso_list);
+ INIT_LIST_HEAD (&hci->intr_list);
+ INIT_LIST_HEAD (&hci->del_list);
+
+ bus = usb_alloc_bus (&hci_device_operations);
+ if (!bus) {
+ kfree (hci);
+ return NULL;
+ }
+
+ hci->bus = bus;
+ bus->hcpriv = (void *) hci;
+
+ return hci;
+}
+
+/*****************************************************************
+ *
+ * Function Name: hc_release_hci
+ *
+ * This function De-allocate all resources
+ *
+ * Input: hci = data structure for the host controller
+ *
+ * Return value : 0
+ *
+ *****************************************************************/
+static void hc_release_hci (hci_t * hci)
+{
+ hcipriv_t *hp = &hci->hp;
+
+ DBGFUNC ("Enter hc_release_hci\n");
+
+ /* disconnect all devices */
+ if (hci->bus->root_hub)
+ usb_disconnect (&hci->bus->root_hub);
+
+ hc_reset (hci);
+
+ if (hp->tl)
+ kfree (hp->tl);
+
+ if (hp->hcport > 0) {
+ release_region (hp->hcport, 2);
+ hp->hcport = 0;
+ }
+
+ if (hp->irq >= 0) {
+ free_irq (hp->irq, hci);
+ hp->irq = -1;
+ }
+
+ usb_deregister_bus (hci->bus);
+ usb_free_bus (hci->bus);
+
+ list_del (&hci->hci_hcd_list);
+ INIT_LIST_HEAD (&hci->hci_hcd_list);
+
+ kfree (hci);
+}
+
+/*****************************************************************
+ *
+ * Function Name: init_irq
+ *
+ * This function is board specific. It sets up the interrupt to
+ * be an edge trigger and trigger on the rising edge
+ *
+ * Input: none
+ *
+ * Return value : none
+ *
+ *****************************************************************/
+void init_irq (void)
+{
+ GPDR &= ~(1 << 13);
+ set_GPIO_IRQ_edge (1 << 13, GPIO_RISING_EDGE);
+}
+
+/*****************************************************************
+ *
+ * Function Name: hc_found_hci
+ *
+ * This function request IO memory regions, request IRQ, and
+ * allocate all other resources.
+ *
+ * Input: addr = first IO address
+ * addr2 = second IO address
+ * irq = interrupt number
+ *
+ * Return: 0 = success or error condition
+ *
+ *****************************************************************/
+static int __devinit hc_found_hci (int addr, int addr2, int irq)
+{
+ hci_t *hci;
+ hcipriv_t *hp;
+
+ DBGFUNC ("Enter hc_found_hci\n");
+ hci = hc_alloc_hci ();
+ if (!hci) {
+ return -ENOMEM;
+ }
+
+ init_irq ();
+ hp = &hci->hp;
+
+ if (!request_region (addr, 256, "SL811 USB HOST")) {
+ DBGERR ("request address %d failed", addr);
+ hc_release_hci (hci);
+ return -EBUSY;
+ }
+ hp->hcport = addr;
+ if (!hp->hcport) {
+ DBGERR ("Error mapping SL811 Memory 0x%x", hp->hcport);
+ }
+
+ if (!request_region (addr2, 256, "SL811 USB HOST")) {
+ DBGERR ("request address %d failed", addr2);
+ hc_release_hci (hci);
+ return -EBUSY;
+ }
+ hp->hcport2 = addr2;
+ if (!hp->hcport2) {
+ DBGERR ("Error mapping SL811 Memory 0x%x", hp->hcport2);
+ }
+
+ if (hc_alloc_trans_buffer (hci)) {
+ hc_release_hci (hci);
+ return -ENOMEM;
+ }
+
+ usb_register_bus (hci->bus);
+
+ if (request_irq (irq, hc_interrupt, 0, "SL811", hci) != 0) {
+ DBGERR ("request interrupt %d failed", irq);
+ hc_release_hci (hci);
+ return -EBUSY;
+ }
+ hp->irq = irq;
+
+ printk (KERN_INFO __FILE__ ": USB SL811 at %x, addr2 = %x, IRQ %d\n",
+ addr, addr2, irq);
+ hc_reset (hci);
+
+ if (hc_start (hci) < 0) {
+ DBGERR ("can't start usb-%x", addr);
+ hc_release_hci (hci);
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+/*****************************************************************
+ *
+ * Function Name: hci_hcd_init
+ *
+ * This is an init function, and it is the first function being called
+ *
+ * Input: none
+ *
+ * Return: 0 = success or error condition
+ *
+ *****************************************************************/
+static int __init hci_hcd_init (void)
+{
+ int ret;
+
+ DBGFUNC ("Enter hci_hcd_init\n");
+ ret = hc_found_hci (base_addr, data_reg_addr, irq);
+
+ return ret;
+}
+
+/*****************************************************************
+ *
+ * Function Name: hci_hcd_cleanup
+ *
+ * This is a cleanup function, and it is called when module is
+ * unloaded.
+ *
+ * Input: none
+ *
+ * Return: none
+ *
+ *****************************************************************/
+static void __exit hci_hcd_cleanup (void)
+{
+ struct list_head *hci_l;
+ hci_t *hci;
+
+ DBGFUNC ("Enter hci_hcd_cleanup\n");
+ for (hci_l = hci_hcd_list.next; hci_l != &hci_hcd_list;) {
+ hci = list_entry (hci_l, hci_t, hci_hcd_list);
+ hci_l = hci_l->next;
+ hc_release_hci (hci);
+ }
+}
+
+module_init (hci_hcd_init);
+module_exit (hci_hcd_cleanup);
+
+MODULE_AUTHOR ("Pei Liu <pbl@cypress.com>");
+MODULE_DESCRIPTION ("USB SL811HS Host Controller Driver");
--- /dev/null
+/*
+ * SL811HS HCD (Host Controller Driver) for USB.
+ *
+ * COPYRIGHT (C) by CYPRESS SEMICONDUCTOR INC
+ *
+ *
+ */
+
+#define GET_FRAME_NUMBER(hci) READ_REG32 (hci, HcFmNumber)
+
+/*
+ * Maximum number of root hub ports
+ */
+#define MAX_ROOT_PORTS 15 /* maximum OHCI root hub ports */
+
+/* control and status registers */
+#define HcRevision 0x00
+#define HcControl 0x01
+#define HcCommandStatus 0x02
+#define HcInterruptStatus 0x03
+#define HcInterruptEnable 0x04
+#define HcInterruptDisable 0x05
+#define HcFmInterval 0x0D
+#define HcFmRemaining 0x0E
+#define HcFmNumber 0x0F
+#define HcLSThreshold 0x11
+#define HcRhDescriptorA 0x12
+#define HcRhDescriptorB 0x13
+#define HcRhStatus 0x14
+#define HcRhPortStatus 0x15
+
+#define HcHardwareConfiguration 0x20
+#define HcDMAConfiguration 0x21
+#define HcTransferCounter 0x22
+#define HcuPInterrupt 0x24
+#define HcuPInterruptEnable 0x25
+#define HcChipID 0x27
+#define HcScratch 0x28
+#define HcSoftwareReset 0x29
+#define HcITLBufferLength 0x2A
+#define HcATLBufferLength 0x2B
+#define HcBufferStatus 0x2C
+#define HcReadBackITL0Length 0x2D
+#define HcReadBackITL1Length 0x2E
+#define HcITLBufferPort 0x40
+#define HcATLBufferPort 0x41
+
+/* OHCI CONTROL AND STATUS REGISTER MASKS */
+
+/*
+ * HcControl (control) register masks
+ */
+#define OHCI_CTRL_HCFS (3 << 6) /* BUS state mask */
+#define OHCI_CTRL_RWC (1 << 9) /* remote wakeup connected */
+#define OHCI_CTRL_RWE (1 << 10) /* remote wakeup enable */
+
+/* pre-shifted values for HCFS */
+#define OHCI_USB_RESET (0 << 6)
+#define OHCI_USB_RESUME (1 << 6)
+#define OHCI_USB_OPER (2 << 6)
+#define OHCI_USB_SUSPEND (3 << 6)
+
+/*
+ * HcCommandStatus (cmdstatus) register masks
+ */
+#define OHCI_HCR (1 << 0) /* host controller reset */
+#define OHCI_SO (3 << 16) /* scheduling overrun count */
+
+/*
+ * masks used with interrupt registers:
+ * HcInterruptStatus (intrstatus)
+ * HcInterruptEnable (intrenable)
+ * HcInterruptDisable (intrdisable)
+ */
+#define OHCI_INTR_SO (1 << 0) /* scheduling overrun */
+
+#define OHCI_INTR_SF (1 << 2) /* start frame */
+#define OHCI_INTR_RD (1 << 3) /* resume detect */
+#define OHCI_INTR_UE (1 << 4) /* unrecoverable error */
+#define OHCI_INTR_FNO (1 << 5) /* frame number overflow */
+#define OHCI_INTR_RHSC (1 << 6) /* root hub status change */
+#define OHCI_INTR_ATD (1 << 7) /* scheduling overrun */
+
+#define OHCI_INTR_MIE (1 << 31) /* master interrupt enable */
+
+/*
+ * HcHardwareConfiguration
+ */
+#define InterruptPinEnable (1 << 0)
+#define InterruptPinTrigger (1 << 1)
+#define InterruptOutputPolarity (1 << 2)
+#define DataBusWidth16 (1 << 3)
+#define DREQOutputPolarity (1 << 5)
+#define DACKInputPolarity (1 << 6)
+#define EOTInputPolarity (1 << 7)
+#define DACKMode (1 << 8)
+#define AnalogOCEnable (1 << 10)
+#define SuspendClkNotStop (1 << 11)
+#define DownstreamPort15KRSel (1 << 12)
+
+/*
+ * HcDMAConfiguration
+ */
+#define DMAReadWriteSelect (1 << 0)
+#define ITL_ATL_DataSelect (1 << 1)
+#define DMACounterSelect (1 << 2)
+#define DMAEnable (1 << 4)
+#define BurstLen_1 0
+#define BurstLen_4 (1 << 5)
+#define BurstLen_8 (2 << 5)
+
+/*
+ * HcuPInterrupt
+ */
+#define SOFITLInt (1 << 0)
+#define ATLInt (1 << 1)
+#define AllEOTInterrupt (1 << 2)
+#define OPR_Reg (1 << 4)
+#define HCSuspended (1 << 5)
+#define ClkReady (1 << 6)
+
+/*
+ * HcBufferStatus
+ */
+#define ITL0BufferFull (1 << 0)
+#define ITL1BufferFull (1 << 1)
+#define ATLBufferFull (1 << 2)
+#define ITL0BufferDone (1 << 3)
+#define ITL1BufferDone (1 << 4)
+#define ATLBufferDone (1 << 5)
+
+/* OHCI ROOT HUB REGISTER MASKS */
+
+/* roothub.portstatus [i] bits */
+#define RH_PS_CCS 0x00000001 /* current connect status */
+#define RH_PS_PES 0x00000002 /* port enable status */
+#define RH_PS_PSS 0x00000004 /* port suspend status */
+#define RH_PS_POCI 0x00000008 /* port over current indicator */
+#define RH_PS_PRS 0x00000010 /* port reset status */
+#define RH_PS_PPS 0x00000100 /* port power status */
+#define RH_PS_LSDA 0x00000200 /* low speed device attached */
+#define RH_PS_CSC 0x00010000 /* connect status change */
+#define RH_PS_PESC 0x00020000 /* port enable status change */
+#define RH_PS_PSSC 0x00040000 /* port suspend status change */
+#define RH_PS_OCIC 0x00080000 /* over current indicator change */
+#define RH_PS_PRSC 0x00100000 /* port reset status change */
+
+/* roothub.status bits */
+#define RH_HS_LPS 0x00000001 /* local power status */
+#define RH_HS_OCI 0x00000002 /* over current indicator */
+#define RH_HS_DRWE 0x00008000 /* device remote wakeup enable */
+#define RH_HS_LPSC 0x00010000 /* local power status change */
+#define RH_HS_OCIC 0x00020000 /* over current indicator change */
+#define RH_HS_CRWE 0x80000000 /* clear remote wakeup enable */
+
+/* roothub.b masks */
+#define RH_B_DR 0x0000ffff /* device removable flags */
+#define RH_B_PPCM 0xffff0000 /* port power control mask */
+
+/* roothub.a masks */
+#define RH_A_NDP (0xff << 0) /* number of downstream ports */
+#define RH_A_PSM (1 << 8) /* power switching mode */
+#define RH_A_NPS (1 << 9) /* no power switching */
+#define RH_A_DT (1 << 10) /* device type (mbz) */
+#define RH_A_OCPM (1 << 11) /* over current protection mode */
+#define RH_A_NOCP (1 << 12) /* no over current protection */
+#define RH_A_POTPGT (0xff << 24) /* power on to power good time */
+
+#define URB_DEL 1
+
+#define PORT_STAT_DEFAULT 0x0100
+#define PORT_CONNECT_STAT 0x1
+#define PORT_ENABLE_STAT 0x2
+#define PORT_SUSPEND_STAT 0x4
+#define PORT_OVER_CURRENT_STAT 0x8
+#define PORT_RESET_STAT 0x10
+#define PORT_POWER_STAT 0x100
+#define PORT_LOW_SPEED_DEV_ATTACH_STAT 0x200
+
+#define PORT_CHANGE_DEFAULT 0x0
+#define PORT_CONNECT_CHANGE 0x1
+#define PORT_ENABLE_CHANGE 0x2
+#define PORT_SUSPEND_CHANGE 0x4
+#define PORT_OVER_CURRENT_CHANGE 0x8
+#define PORT_RESET_CHANGE 0x10
+
+/* Port Status Request info */
+
+typedef struct portstat {
+ __u16 portChange;
+ __u16 portStatus;
+} portstat_t;
+
+typedef struct hcipriv {
+ int irq;
+ int disabled; /* e.g. got a UE, we're hung */
+ atomic_t resume_count; /* defending against multiple resumes */
+ struct ohci_regs *regs; /* OHCI controller's memory */
+ int hcport; /* I/O base address */
+ int hcport2; /* I/O data reg addr */
+
+ struct portstat *RHportStatus; /* root hub port status */
+
+ int intrstatus;
+ __u32 hc_control; /* copy of the hc control reg */
+
+ int frame;
+
+ __u8 *tl;
+ int xferPktLen;
+ int atl_len;
+ int atl_buffer_len;
+ int itl0_len;
+ int itl1_len;
+ int itl_buffer_len;
+ int itl_index;
+ int tl_last;
+ int units_left;
+
+} hcipriv_t;
+struct hci;
+
+#define cClt 0 // Control
+#define cISO 1 // ISO
+#define cBULK 2 // BULK
+#define cInt 3 // Interrupt
+#define ISO_BIT 0x10
+
+/*-------------------------------------------------------------------------
+ * EP0 use for configuration and Vendor Specific command interface
+ *------------------------------------------------------------------------*/
+#define cMemStart 0x10
+#define EP0Buf 0x40 /* SL11H/SL811H memory start at 0x40 */
+#define EP0Len 0x40 /* Length of config buffer EP0Buf */
+#define EP1Buf 0x60
+#define EP1Len 0x40
+
+/*-------------------------------------------------------------------------
+ * SL11H/SL811H memory from 80h-ffh use as ping-pong buffer.
+ *------------------------------------------------------------------------*/
+#define uBufA 0x80 /* buffer A address for DATA0 */
+#define uBufB 0xc0 /* buffer B address for DATA1 */
+#define uXferLen 0x40 /* xfer length */
+#define sMemSize 0xc0 /* Total SL11 memory size */
+#define cMemEnd 256
+
+/*-------------------------------------------------------------------------
+ * SL811H Register Control memory map
+ * --Note:
+ * --SL11H only has one control register set from 0x00-0x04
+ * --SL811H has two control register set from 0x00-0x04 and 0x08-0x0c
+ *------------------------------------------------------------------------*/
+
+#define EP0Control 0x00
+#define EP0Address 0x01
+#define EP0XferLen 0x02
+#define EP0Status 0x03
+#define EP0Counter 0x04
+
+#define EP1Control 0x08
+#define EP1Address 0x09
+#define EP1XferLen 0x0a
+#define EP1Status 0x0b
+#define EP1Counter 0x0c
+
+#define CtrlReg 0x05
+#define IntEna 0x06
+ // 0x07 is reserved
+#define IntStatus 0x0d
+#define cDATASet 0x0e
+#define cSOFcnt 0x0f
+#define IntMask 0x57 /* Reset|DMA|EP0|EP2|EP1 for IntEna */
+#define HostMask 0x47 /* Host request command for IntStatus */
+#define ReadMask 0xd7 /* Read mask interrupt for IntStatus */
+
+/*-------------------------------------------------------------------------
+ * Standard Chapter 9 definition
+ *-------------------------------------------------------------------------
+ */
+#define GET_STATUS 0x00
+#define CLEAR_FEATURE 0x01
+#define SET_FEATURE 0x03
+#define SET_ADDRESS 0x05
+#define GET_DESCRIPTOR 0x06
+#define SET_DESCRIPTOR 0x07
+#define GET_CONFIG 0x08
+#define SET_CONFIG 0x09
+#define GET_INTERFACE 0x0a
+#define SET_INTERFACE 0x0b
+#define SYNCH_FRAME 0x0c
+
+#define DEVICE 0x01
+#define CONFIGURATION 0x02
+#define STRING 0x03
+#define INTERFACE 0x04
+#define ENDPOINT 0x05
+
+/*-------------------------------------------------------------------------
+ * SL11H/SL811H definition
+ *-------------------------------------------------------------------------
+ */
+#define DATA0_WR 0x07 // (Arm+Enable+tranmist to Host+DATA0)
+#define DATA1_WR 0x47 // (Arm+Enable+tranmist to Host on DATA1)
+#define ZDATA0_WR 0x05 // (Arm+Transaction Ignored+tranmist to Host+DATA0)
+#define ZDATA1_WR 0x45 // (Arm+Transaction Ignored+tranmist to Host+DATA1)
+#define DATA0_RD 0x03 // (Arm+Enable+received from Host+DATA0)
+#define DATA1_RD 0x43 // (Arm+Enable+received from Host+DATA1)
+
+#define PID_SETUP 0x2d // USB Specification 1.1 Standard Definition
+#define PID_SOF 0xA5
+#define PID_IN 0x69
+#define PID_OUT 0xe1
+
+#define MAX_RETRY 0xffff
+#define TIMEOUT 5 /* 2 mseconds */
+
+#define SL11H_HOSTCTLREG 0
+#define SL11H_BUFADDRREG 1
+#define SL11H_BUFLNTHREG 2
+#define SL11H_PKTSTATREG 3 /* read */
+#define SL11H_PIDEPREG 3 /* write */
+#define SL11H_XFERCNTREG 4 /* read */
+#define SL11H_DEVADDRREG 4 /* write */
+#define SL11H_CTLREG1 5
+#define SL11H_INTENBLREG 6
+
+#define SL11H_HOSTCTLREG_B 8
+#define SL11H_BUFADDRREG_B 9
+#define SL11H_BUFLNTHREG_B 0x0A
+#define SL11H_PKTSTATREG_B 0x0B /* read */
+#define SL11H_PIDEPREG_B 0x0B /* write */
+#define SL11H_XFERCNTREG_B 0x0C /* read */
+#define SL11H_DEVADDRREG_B 0x0C /* write */
+
+#define SL11H_INTSTATREG 0x0D /* write clears bitwise */
+#define SL11H_HWREVREG 0x0E /* read */
+#define SL11H_SOFLOWREG 0x0E /* write */
+#define SL11H_SOFTMRREG 0x0F /* read */
+#define SL11H_CTLREG2 0x0F /* write */
+#define SL11H_DATA_START 0x10
+
+/* Host control register bits (addr 0) */
+#define SL11H_HCTLMASK_ARM 1
+#define SL11H_HCTLMASK_ENBLEP 2
+#define SL11H_HCTLMASK_WRITE 4
+#define SL11H_HCTLMASK_ISOCH 0x10
+#define SL11H_HCTLMASK_AFTERSOF 0x20
+#define SL11H_HCTLMASK_SEQ 0x40
+#define SL11H_HCTLMASK_PREAMBLE 0x80
+
+/* Packet status register bits (addr 3) */
+#define SL11H_STATMASK_ACK 1
+#define SL11H_STATMASK_ERROR 2
+#define SL11H_STATMASK_TMOUT 4
+#define SL11H_STATMASK_SEQ 8
+#define SL11H_STATMASK_SETUP 0x10
+#define SL11H_STATMASK_OVF 0x20
+#define SL11H_STATMASK_NAK 0x40
+#define SL11H_STATMASK_STALL 0x80
+
+/* Control register 1 bits (addr 5) */
+#define SL11H_CTL1MASK_DSBLSOF 1
+#define SL11H_CTL1MASK_NOTXEOF2 4
+#define SL11H_CTL1MASK_DSTATE 0x18
+#define SL11H_CTL1MASK_NSPD 0x20
+#define SL11H_CTL1MASK_SUSPEND 0x40
+#define SL11H_CTL1MASK_CLK12 0x80
+
+#define SL11H_CTL1VAL_RESET 8
+
+/* Interrut enable (addr 6) and interrupt status register bits (addr 0xD) */
+#define SL11H_INTMASK_XFERDONE 1
+#define SL11H_INTMASK_SOFINTR 0x10
+#define SL11H_INTMASK_INSRMV 0x20
+#define SL11H_INTMASK_USBRESET 0x40
+#define SL11H_INTMASK_DSTATE 0x80 /* only in status reg */
+
+/* HW rev and SOF lo register bits (addr 0xE) */
+#define SL11H_HWRMASK_HWREV 0xF0
+
+/* SOF counter and control reg 2 (addr 0xF) */
+#define SL11H_CTL2MASK_SOFHI 0x3F
+#define SL11H_CTL2MASK_DSWAP 0x40
+#define SL11H_CTL2MASK_HOSTMODE 0xae
+
--- /dev/null
+
+/*-------------------------------------------------------------------------*/
+/*-------------------------------------------------------------------------*
+ * SL811HS virtual root hub
+ *
+ * based on usb-ohci.c by R. Weissgaerber et al.
+ *-------------------------------------------------------------------------*
+ * 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
+ *
+ *-------------------------------------------------------------------------*/
+
+#ifdef DEBUG
+#undef DEBUG
+#endif
+static __u32 getPortStatusAndChange (hci_t * hci);
+static void setPortStatus (hci_t * hci, __u16 bitPos);
+static void setPortChange (hci_t * hci, __u16 bitPos);
+static void clrPortStatus (hci_t * hci, __u16 bitPos);
+static void clrPortChange (hci_t * hci, __u16 bitPos);
+static int USBReset (hci_t * hci);
+static int cc_to_error (int cc);
+
+/*-------------------------------------------------------------------------*
+ * Virtual Root Hub
+ *-------------------------------------------------------------------------*/
+
+/* Device descriptor */
+static __u8 root_hub_dev_des[] = {
+ 0x12, /* __u8 bLength; */
+ 0x01, /* __u8 bDescriptorType; Device */
+ 0x10, /* __u16 bcdUSB; v1.1 */
+ 0x01,
+ 0x09, /* __u8 bDeviceClass; HUB_CLASSCODE */
+ 0x00, /* __u8 bDeviceSubClass; */
+ 0x00, /* __u8 bDeviceProtocol; */
+ 0x08, /* __u8 bMaxPacketSize0; 8 Bytes */
+ 0x00, /* __u16 idVendor; */
+ 0x00,
+ 0x00, /* __u16 idProduct; */
+ 0x00,
+ 0x00, /* __u16 bcdDevice; */
+ 0x00,
+ 0x00, /* __u8 iManufacturer; */
+ 0x02, /* __u8 iProduct; */
+ 0x01, /* __u8 iSerialNumber; */
+ 0x01 /* __u8 bNumConfigurations; */
+};
+
+/* Configuration descriptor */
+static __u8 root_hub_config_des[] = {
+ 0x09, /* __u8 bLength; */
+ 0x02, /* __u8 bDescriptorType; Configuration */
+ 0x19, /* __u16 wTotalLength; */
+ 0x00,
+ 0x01, /* __u8 bNumInterfaces; */
+ 0x01, /* __u8 bConfigurationValue; */
+ 0x00, /* __u8 iConfiguration; */
+ 0x40, /* __u8 bmAttributes;
+ Bit 7: Bus-powered, 6: Self-powered, 5 Remote-wakwup,
+ 4..0: resvd */
+ 0x00, /* __u8 MaxPower; */
+
+ /* interface */
+ 0x09, /* __u8 if_bLength; */
+ 0x04, /* __u8 if_bDescriptorType; Interface */
+ 0x00, /* __u8 if_bInterfaceNumber; */
+ 0x00, /* __u8 if_bAlternateSetting; */
+ 0x01, /* __u8 if_bNumEndpoints; */
+ 0x09, /* __u8 if_bInterfaceClass; HUB_CLASSCODE */
+ 0x00, /* __u8 if_bInterfaceSubClass; */
+ 0x00, /* __u8 if_bInterfaceProtocol; */
+ 0x00, /* __u8 if_iInterface; */
+
+ /* endpoint */
+ 0x07, /* __u8 ep_bLength; */
+ 0x05, /* __u8 ep_bDescriptorType; Endpoint */
+ 0x81, /* __u8 ep_bEndpointAddress; IN Endpoint 1 */
+ 0x03, /* __u8 ep_bmAttributes; Interrupt */
+ 0x02, /* __u16 ep_wMaxPacketSize; ((MAX_ROOT_PORTS + 1) / 8 */
+ 0x00,
+ 0xff /* __u8 ep_bInterval; 255 ms */
+};
+
+/* Hub class-specific descriptor is constructed dynamically */
+
+/***************************************************************************
+ * Function Name : rh_send_irq
+ *
+ * This function examine the port change in the virtual root hub.
+ *
+ * Note: This function assumes only one port exist in the root hub.
+ *
+ * Input: hci = data structure for the host controller
+ * rh_data = The pointer to port change data
+ * rh_len = length of the data in bytes
+ *
+ * Return: length of data
+ **************************************************************************/
+static int rh_send_irq (hci_t * hci, void *rh_data, int rh_len)
+{
+ int num_ports;
+ int i;
+ int ret;
+ int len;
+ __u8 data[8];
+
+ DBGFUNC ("enter rh_send_irq: \n");
+
+ /* Assuming the root hub has one port. This value need to change if
+ * there are more than one port for the root hub
+ */
+
+ num_ports = 1;
+
+ /* The root hub status is not implemented, it basically has two fields:
+ * -- Local Power Status
+ * -- Over Current Indicator
+ * -- Local Power Change
+ * -- Over Current Indicator
+ *
+ * Right now, It is assume the power is good and no changes
+ */
+
+ *(__u8 *) data = 0;
+
+ ret = *(__u8 *) data;
+
+ /* Has the port status change within the root hub: It checks for
+ * -- Port Connect Status change
+ * -- Port Enable Change
+ */
+
+ for (i = 0; i < num_ports; i++) {
+ *(__u8 *) (data + (i + 1) / 8) |=
+ (((getPortStatusAndChange (hci) >> 16) & (PORT_CONNECT_STAT | PORT_ENABLE_STAT)) ? 1 : 0) << ((i + 1) % 8);
+ ret += *(__u8 *) (data + (i + 1) / 8);
+
+ /* After the port change is read, it should be reset so the next time
+ * is it doesn't trigger a change again */
+
+ }
+ len = i / 8 + 1;
+
+ if (ret > 0) {
+ memcpy (rh_data, data, min (len, min (rh_len, (int)sizeof (data))));
+ return len;
+ }
+ return 0;
+}
+
+/***************************************************************************
+ * Function Name : rh_int_timer_do
+ *
+ * This function is called when the timer expires. It gets the the port
+ * change data and pass along to the upper protocol.
+ *
+ * Note: The virtual root hub interrupt pipe are polled by the timer
+ * every "interval" ms
+ *
+ * Input: ptr = ptr to the urb
+ *
+ * Return: none
+ **************************************************************************/
+static void rh_int_timer_do (unsigned long ptr)
+{
+ int len;
+ struct urb *urb = (struct urb *) ptr;
+ hci_t *hci = urb->dev->bus->hcpriv;
+
+ DBGFUNC ("enter rh_int_timer_do\n");
+
+ if (hci->rh.send) {
+ len = rh_send_irq (hci, urb->transfer_buffer,
+ urb->transfer_buffer_length);
+ if (len > 0) {
+ urb->actual_length = len;
+ if (urb_debug == 2)
+ urb_print (urb, "RET-t(rh)",
+ usb_pipeout (urb->pipe));
+
+ if (urb->complete) {
+ urb->complete (urb);
+ }
+ }
+ }
+
+ /* re-activate the timer */
+ rh_init_int_timer (urb);
+}
+
+/***************************************************************************
+ * Function Name : rh_init_int_timer
+ *
+ * This function creates a timer that act as interrupt pipe in the
+ * virtual hub.
+ *
+ * Note: The virtual root hub's interrupt pipe are polled by the timer
+ * every "interval" ms
+ *
+ * Input: urb = USB request block
+ *
+ * Return: 0
+ **************************************************************************/
+static int rh_init_int_timer (struct urb * urb)
+{
+ hci_t *hci = urb->dev->bus->hcpriv;
+ hci->rh.interval = urb->interval;
+
+ init_timer (&hci->rh.rh_int_timer);
+ hci->rh.rh_int_timer.function = rh_int_timer_do;
+ hci->rh.rh_int_timer.data = (unsigned long) urb;
+ hci->rh.rh_int_timer.expires = jiffies + (HZ * (urb->interval < 30 ? 30 : urb->interval)) / 1000;
+ add_timer (&hci->rh.rh_int_timer);
+
+ return 0;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* helper macro */
+#define OK(x) len = (x); break
+
+/***************************************************************************
+ * Function Name : rh_submit_urb
+ *
+ * This function handles all USB request to the the virtual root hub
+ *
+ * Input: urb = USB request block
+ *
+ * Return: 0
+ **************************************************************************/
+static int rh_submit_urb (struct urb * urb)
+{
+ struct usb_device *usb_dev = urb->dev;
+ hci_t *hci = usb_dev->bus->hcpriv;
+ unsigned int pipe = urb->pipe;
+ struct usb_ctrlrequest *cmd = (struct usb_ctrlrequest *) urb->setup_packet;
+ void *data = urb->transfer_buffer;
+ int leni = urb->transfer_buffer_length;
+ int len = 0;
+ int status = TD_CC_NOERROR;
+ __u32 datab[4];
+ __u8 *data_buf = (__u8 *) datab;
+
+ __u16 bmRType_bReq;
+ __u16 wValue;
+ __u16 wIndex;
+ __u16 wLength;
+
+ DBGFUNC ("enter rh_submit_urb\n");
+ if (usb_pipeint (pipe)) {
+ hci->rh.urb = urb;
+ hci->rh.send = 1;
+ hci->rh.interval = urb->interval;
+ rh_init_int_timer (urb);
+ urb->status = cc_to_error (TD_CC_NOERROR);
+
+ return 0;
+ }
+
+ bmRType_bReq = cmd->bRequestType | (cmd->bRequest << 8);
+ wValue = le16_to_cpu (cmd->wValue);
+ wIndex = le16_to_cpu (cmd->wIndex);
+ wLength = le16_to_cpu (cmd->wLength);
+
+ DBG ("rh_submit_urb, req = %d(%x) len=%d",
+ bmRType_bReq, bmRType_bReq, wLength);
+
+ switch (bmRType_bReq) {
+ /* Request Destination:
+ without flags: Device,
+ RH_INTERFACE: interface,
+ RH_ENDPOINT: endpoint,
+ RH_CLASS means HUB here,
+ RH_OTHER | RH_CLASS almost ever means HUB_PORT here
+ */
+
+ case RH_GET_STATUS:
+ *(__u16 *) data_buf = cpu_to_le16 (1);
+ OK (2);
+
+ case RH_GET_STATUS | RH_INTERFACE:
+ *(__u16 *) data_buf = cpu_to_le16 (0);
+ OK (2);
+
+ case RH_GET_STATUS | RH_ENDPOINT:
+ *(__u16 *) data_buf = cpu_to_le16 (0);
+ OK (2);
+
+ case RH_GET_STATUS | RH_CLASS:
+ *(__u32 *) data_buf = cpu_to_le32 (0);
+ OK (4);
+
+ case RH_GET_STATUS | RH_OTHER | RH_CLASS:
+ *(__u32 *) data_buf =
+ cpu_to_le32 (getPortStatusAndChange (hci));
+ OK (4);
+
+ case RH_CLEAR_FEATURE | RH_ENDPOINT:
+ switch (wValue) {
+ case (RH_ENDPOINT_STALL):
+ OK (0);
+ }
+ break;
+
+ case RH_CLEAR_FEATURE | RH_CLASS:
+ switch (wValue) {
+ case RH_C_HUB_LOCAL_POWER:
+ OK (0);
+
+ case (RH_C_HUB_OVER_CURRENT):
+ /* Over Current Not Implemented */
+ OK (0);
+ }
+ break;
+
+ case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
+ switch (wValue) {
+ case (RH_PORT_ENABLE):
+ clrPortStatus (hci, PORT_ENABLE_STAT);
+ OK (0);
+
+ case (RH_PORT_SUSPEND):
+ clrPortStatus (hci, PORT_SUSPEND_STAT);
+ OK (0);
+
+ case (RH_PORT_POWER):
+ clrPortStatus (hci, PORT_POWER_STAT);
+ OK (0);
+
+ case (RH_C_PORT_CONNECTION):
+ clrPortChange (hci, PORT_CONNECT_STAT);
+ OK (0);
+
+ case (RH_C_PORT_ENABLE):
+ clrPortChange (hci, PORT_ENABLE_STAT);
+ OK (0);
+
+ case (RH_C_PORT_SUSPEND):
+ clrPortChange (hci, PORT_SUSPEND_STAT);
+ OK (0);
+
+ case (RH_C_PORT_OVER_CURRENT):
+ clrPortChange (hci, PORT_OVER_CURRENT_STAT);
+ OK (0);
+
+ case (RH_C_PORT_RESET):
+ clrPortChange (hci, PORT_RESET_STAT);
+ OK (0);
+ }
+ break;
+
+ case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
+ switch (wValue) {
+ case (RH_PORT_SUSPEND):
+ setPortStatus (hci, PORT_SUSPEND_STAT);
+ OK (0);
+
+ case (RH_PORT_RESET):
+ setPortStatus (hci, PORT_RESET_STAT);
+ // USBReset(hci);
+ clrPortChange (hci,
+ PORT_CONNECT_CHANGE | PORT_ENABLE_CHANGE
+ | PORT_SUSPEND_CHANGE |
+ PORT_OVER_CURRENT_CHANGE);
+ setPortChange (hci, PORT_RESET_CHANGE);
+ clrPortStatus (hci, PORT_RESET_STAT);
+ setPortStatus (hci, PORT_ENABLE_STAT);
+
+ OK (0);
+
+ case (RH_PORT_POWER):
+ setPortStatus (hci, PORT_POWER_STAT);
+ OK (0);
+
+ case (RH_PORT_ENABLE):
+ setPortStatus (hci, PORT_ENABLE_STAT);
+ OK (0);
+ }
+ break;
+
+ case RH_SET_ADDRESS:
+ hci->rh.devnum = wValue;
+ OK (0);
+
+ case RH_GET_DESCRIPTOR:
+ DBGVERBOSE ("rh_submit_urb: RH_GET_DESCRIPTOR, wValue = 0x%x\n", wValue);
+ switch ((wValue & 0xff00) >> 8) {
+ case (0x01): /* device descriptor */
+ len = min (leni, min ((__u16)sizeof (root_hub_dev_des), wLength));
+ data_buf = root_hub_dev_des;
+ OK (len);
+
+ case (0x02): /* configuration descriptor */
+ len = min (leni, min ((__u16)sizeof (root_hub_config_des), wLength));
+ data_buf = root_hub_config_des;
+ OK (len);
+
+ case (0x03): /* string descriptors */
+ len = usb_root_hub_string (wValue & 0xff, (int) (long) 0,
+ "SL811HS", data, wLength);
+ if (len > 0) {
+ data_buf = data;
+ OK (min (leni, len));
+ }
+
+ default:
+ status = SL11H_STATMASK_STALL;
+ }
+ break;
+
+ case RH_GET_DESCRIPTOR | RH_CLASS:
+ data_buf[0] = 9; // min length;
+ data_buf[1] = 0x29;
+ data_buf[2] = 1; // # of downstream port
+ data_buf[3] = 0;
+ datab[1] = 0;
+ data_buf[5] = 50; // 100 ms for port reset
+ data_buf[7] = 0xfc; // which port is attachable
+ if (data_buf[2] < 7) {
+ data_buf[8] = 0xff;
+ } else {
+ }
+
+ len = min (leni, min ((__u16)data_buf[0], wLength));
+ OK (len);
+
+ case RH_GET_CONFIGURATION:
+ *(__u8 *) data_buf = 0x01;
+ OK (1);
+
+ case RH_SET_CONFIGURATION:
+ OK (0);
+
+ default:
+ DBGERR ("unsupported root hub command");
+ status = SL11H_STATMASK_STALL;
+ }
+
+ len = min (len, leni);
+ if (data != data_buf)
+ memcpy (data, data_buf, len);
+ urb->actual_length = len;
+ urb->status = cc_to_error (status);
+
+ urb->hcpriv = NULL;
+ urb->dev = NULL;
+ if (urb->complete) {
+ urb->complete (urb);
+ }
+
+ return 0;
+}
+
+/***************************************************************************
+ * Function Name : rh_unlink_urb
+ *
+ * This function unlinks the URB
+ *
+ * Input: urb = USB request block
+ *
+ * Return: 0
+ **************************************************************************/
+static int rh_unlink_urb (struct urb * urb)
+{
+ hci_t *hci = urb->dev->bus->hcpriv;
+
+ DBGFUNC ("enter rh_unlink_urb\n");
+ if (hci->rh.urb == urb) {
+ hci->rh.send = 0;
+ del_timer (&hci->rh.rh_int_timer);
+ hci->rh.urb = NULL;
+
+ urb->hcpriv = NULL;
+ usb_put_dev (urb->dev);
+ urb->dev = NULL;
+ if (urb->transfer_flags & USB_ASYNC_UNLINK) {
+ urb->status = -ECONNRESET;
+ if (urb->complete) {
+ urb->complete (urb);
+ }
+ } else
+ urb->status = -ENOENT;
+ }
+ return 0;
+}
+
+/***************************************************************************
+ * Function Name : rh_connect_rh
+ *
+ * This function connect the virtual root hub to the USB stack
+ *
+ * Input: urb = USB request block
+ *
+ * Return: 0
+ **************************************************************************/
+static int rh_connect_rh (hci_t * hci)
+{
+ struct usb_device *usb_dev;
+
+ hci->rh.devnum = 0;
+ usb_dev = usb_alloc_dev (NULL, hci->bus);
+ if (!usb_dev)
+ return -ENOMEM;
+
+ hci->bus->root_hub = usb_dev;
+ usb_connect (usb_dev);
+ if (usb_new_device (usb_dev) != 0) {
+ usb_free_dev (usb_dev);
+ return -ENODEV;
+ }
+
+ return 0;
+}
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