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Commit 47c1b9b3 authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman Committed by Linus Torvalds
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USB: removed unused hc_sl811 driver from the tree 

Signed-off-by: default avatarGreg Kroah-Hartman <greg@kroah.com>
parent d5acaac4
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drivers/usb/host/hc_simple.c deleted 100644 → 0
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/*-------------------------------------------------------------------------*/
/*-------------------------------------------------------------------------*
* 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, NULL); /* 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;
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, int status)
{
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? */
/* asynchronous with callback */
/* relink the urb to the del list */
list_move (&urb->urb_list, &hci->del_list);
urb->status = status;
spin_unlock_irqrestore (&usb_urb_lock, flags);
} else {
/* hcd does not own URB but we keep the driver happy anyway */
spin_unlock_irqrestore (&usb_urb_lock, flags);
if (urb->complete) {
urb->status = status;
urb->actual_length = 0;
urb->complete (urb, NULL);
if (urb->reject)
wake_up (&usb_kill_urb_queue);
}
}
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");
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 & URB_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 & URB_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_init(&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_init (&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 through 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_move (&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;
}
drivers/usb/host/hc_simple.h deleted 100644 → 0
View file @ d5acaac4
/*-------------------------------------------------------------------------*/
/* 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; /* interval of roothub interrupt transfers */
struct timer_list rh_int_timer; /* interval 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);
}
}
}
drivers/usb/host/hc_sl811.c deleted 100644 → 0
View file @ d5acaac4
/*-------------------------------------------------------------------------*/
/*-------------------------------------------------------------------------*
* 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/slab.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_param(urb_debug, int, 0);
MODULE_PARM_DESC (urb_debug, "debug urb messages, default is 0 (no)");
module_param(base_addr, int, 0);
MODULE_PARM_DESC (base_addr, "sl811 base address 0xd3800000");
module_param(data_reg_addr, int, 0);
MODULE_PARM_DESC (data_reg_addr, "sl811 data register address 0xd3810000");
module_param(irq, int, 0);
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);
kfree (ps);
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_put_bus (hci->bus);
list_del_init (&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");
if (usb_disabled())
return -ENODEV;
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)
{
hci_t *hci, *tmp;
DBGFUNC ("Enter hci_hcd_cleanup\n");
list_for_each_entry_safe(hci, tmp, &hci_hcd_list, hci_hcd_list)
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");
drivers/usb/host/hc_sl811.h deleted 100644 → 0
View file @ d5acaac4
/*
* 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
/* Interrupt 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
drivers/usb/host/hc_sl811_rh.c deleted 100644 → 0
View file @ d5acaac4
/*-------------------------------------------------------------------------*/
/*-------------------------------------------------------------------------*
* 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
*
*-------------------------------------------------------------------------*/
/* FIXME: reuse the root hub framework in usbcore, shrinking this code. */
#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, NULL);
}
}
}
/* 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;
}
/*-------------------------------------------------------------------------*/
/* for returning string descriptors in UTF-16LE */
static int ascii2utf (char *ascii, __u8 *utf, int utfmax)
{
int retval;
for (retval = 0; *ascii && utfmax > 1; utfmax -= 2, retval += 2) {
*utf++ = *ascii++ & 0x7f;
*utf++ = 0;
}
return retval;
}
static int root_hub_string (int id, int serial, char *type, __u8 *data, int len)
{
char buf [30];
// assert (len > (2 * (sizeof (buf) + 1)));
// assert (strlen (type) <= 8);
// language ids
if (id == 0) {
*data++ = 4; *data++ = 3; /* 4 bytes data */
*data++ = 0; *data++ = 0; /* some language id */
return 4;
// serial number
} else if (id == 1) {
sprintf (buf, "%x", serial);
// product description
} else if (id == 2) {
sprintf (buf, "USB %s Root Hub", type);
// id 3 == vendor description
// unsupported IDs --> "stall"
} else
return 0;
data [0] = 2 + ascii2utf (buf, data + 2, len - 2);
data [1] = 3;
return data [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 = 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, NULL);
}
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 & URB_ASYNC_UNLINK) {
urb->status = -ECONNRESET;
if (urb->complete) {
urb->complete (urb, NULL);
}
} 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;
int retval;
hci->rh.devnum = 0;
usb_dev = usb_alloc_dev (NULL, hci->bus, 0);
if (!usb_dev)
return -ENOMEM;
usb_dev->devnum = 1;
usb_dev->bus->devnum_next = usb_dev->devnum + 1;
set_bit (usb_dev->devnum, usb_dev->bus->devmap.devicemap);
down (&usb_bus_list_lock);
hci->bus->root_hub = usb_dev;
retval = usb_new_device (usb_dev);
if (retval != 0)
hci->bus->root_hub = NULL;
up (&usb_bus_list_lock);
if (retval != 0) {
usb_put_dev (usb_dev);
return -ENODEV;
}
return 0;
}
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