/* ==========================================================================
* $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd.c $
* $Revision: #104 $
* $Date: 2011/10/24 $
* $Change: 1871159 $
*
* Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
* "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
* otherwise expressly agreed to in writing between Synopsys and you.
*
* The Software IS NOT an item of Licensed Software or Licensed Product under
* any End User Software License Agreement or Agreement for Licensed Product
* with Synopsys or any supplement thereto. You are permitted to use and
* redistribute this Software in source and binary forms, with or without
* modification, provided that redistributions of source code must retain this
* notice. You may not view, use, disclose, copy or distribute this file or
* any information contained herein except pursuant to this license grant from
* Synopsys. If you do not agree with this notice, including the disclaimer
* below, then you are not authorized to use the Software.
*
* THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
* ========================================================================== */
#ifndef DWC_DEVICE_ONLY
/** @file
* This file implements HCD Core. All code in this file is portable and doesn't
* use any OS specific functions.
* Interface provided by HCD Core is defined in struct usb_hcd
*/
static int32_t dwc_otg_hcd_session_start_cb(void *p)
{
dwc_otg_hcd_t *dwc_otg_hcd;
DWC_DEBUGPL(DBG_HCDV, "%s(%p)\n", __func__, p);
dwc_otg_hcd = p;
dwc_otg_hcd_start_connect_timer(dwc_otg_hcd);
return 1;
}
/**
* HCD Callback function for starting the HCD when A-Cable is
* connected.
*
* @param p void pointer to the struct usb_hcd
*/
static int32_t dwc_otg_hcd_start_cb(void *p)
{
dwc_otg_hcd_t *dwc_otg_hcd = p;
dwc_otg_core_if_t *core_if;
hprt0_data_t hprt0;
core_if = dwc_otg_hcd->core_if;
if (core_if->op_state == B_HOST) {
/*
* Reset the port. During a HNP mode switch the reset
* needs to occur within 1ms and have a duration of at
* least 50ms.
*/
hprt0.d32 = dwc_otg_read_hprt0(core_if);
hprt0.b.prtrst = 1;
DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
}
DWC_WORKQ_SCHEDULE_DELAYED(core_if->wq_otg,
hcd_start_func, dwc_otg_hcd, 50,
"start hcd");
return 1;
}
/**
* HCD Callback function for disconnect of the HCD.
*
* @param p void pointer to the struct usb_hcd
*/
static int32_t dwc_otg_hcd_disconnect_cb(void *p)
{
gintsts_data_t intr;
dwc_otg_hcd_t *dwc_otg_hcd = p;
DWC_SPINLOCK(dwc_otg_hcd->lock);
/*
* Set status flags for the hub driver.
*/
dwc_otg_hcd->flags.b.port_connect_status_change = 1;
dwc_otg_hcd->flags.b.port_connect_status = 0;
if(fiq_enable) {
local_fiq_disable();
fiq_fsm_spin_lock(&dwc_otg_hcd->fiq_state->lock);
}
/*
* Shutdown any transfers in process by clearing the Tx FIFO Empty
* interrupt mask and status bits and disabling subsequent host
* channel interrupts.
*/
intr.d32 = 0;
intr.b.nptxfempty = 1;
intr.b.ptxfempty = 1;
intr.b.hcintr = 1;
DWC_MODIFY_REG32(&dwc_otg_hcd->core_if->core_global_regs->gintmsk,
intr.d32, 0);
DWC_MODIFY_REG32(&dwc_otg_hcd->core_if->core_global_regs->gintsts,
intr.d32, 0);
del_timers(dwc_otg_hcd);
/*
* Turn off the vbus power only if the core has transitioned to device
* mode. If still in host mode, need to keep power on to detect a
* reconnection.
*/
if (dwc_otg_is_device_mode(dwc_otg_hcd->core_if)) {
if (dwc_otg_hcd->core_if->op_state != A_SUSPEND) {
hprt0_data_t hprt0 = {.d32 = 0 };
DWC_PRINTF("Disconnect: PortPower off\n");
hprt0.b.prtpwr = 0;
DWC_WRITE_REG32(dwc_otg_hcd->core_if->host_if->hprt0,
hprt0.d32);
}
dwc_otg_disable_host_interrupts(dwc_otg_hcd->core_if);
}
/* Respond with an error status to all URBs in the schedule. */
kill_all_urbs(dwc_otg_hcd);
if (dwc_otg_is_host_mode(dwc_otg_hcd->core_if)) {
/* Clean up any host channels that were in use. */
int num_channels;
int i;
dwc_hc_t *channel;
dwc_otg_hc_regs_t *hc_regs;
hcchar_data_t hcchar;
num_channels = dwc_otg_hcd->core_if->core_params->host_channels;
if (!dwc_otg_hcd->core_if->dma_enable) {
/* Flush out any channel requests in slave mode. */
for (i = 0; i < num_channels; i++) {
channel = dwc_otg_hcd->hc_ptr_array[i];
if (DWC_CIRCLEQ_EMPTY_ENTRY
(channel, hc_list_entry)) {
hc_regs =
dwc_otg_hcd->core_if->
host_if->hc_regs[i];
hcchar.d32 =
DWC_READ_REG32(&hc_regs->hcchar);
if (hcchar.b.chen) {
hcchar.b.chen = 0;
hcchar.b.chdis = 1;
hcchar.b.epdir = 0;
DWC_WRITE_REG32
(&hc_regs->hcchar,
hcchar.d32);
}
}
}
}
if(fiq_fsm_enable) {
for(i=0; i < 128; i++) {
dwc_otg_hcd->hub_port[i] = 0;
}
}
}
if(fiq_enable) {
fiq_fsm_spin_unlock(&dwc_otg_hcd->fiq_state->lock);
local_fiq_enable();
}
if (dwc_otg_hcd->fops->disconnect) {
dwc_otg_hcd->fops->disconnect(dwc_otg_hcd);
}
DWC_SPINUNLOCK(dwc_otg_hcd->lock);
return 1;
}
/**
* HCD Callback function for stopping the HCD.
*
* @param p void pointer to the struct usb_hcd
*/
static int32_t dwc_otg_hcd_stop_cb(void *p)
{
dwc_otg_hcd_t *dwc_otg_hcd = p;
DWC_DEBUGPL(DBG_HCDV, "%s(%p)\n", __func__, p);
dwc_otg_hcd_stop(dwc_otg_hcd);
return 1;
}
#ifdef CONFIG_USB_DWC_OTG_LPM
/**
* HCD Callback function for sleep of HCD.
*
* @param p void pointer to the struct usb_hcd
*/
static int dwc_otg_hcd_sleep_cb(void *p)
{
dwc_otg_hcd_t *hcd = p;
dwc_otg_hcd_free_hc_from_lpm(hcd);
return 0;
}
#endif
/**
* HCD Callback function for Remote Wakeup.
*
* @param p void pointer to the struct usb_hcd
*/
static int dwc_otg_hcd_rem_wakeup_cb(void *p)
{
dwc_otg_hcd_t *hcd = p;
if (hcd->core_if->lx_state == DWC_OTG_L2) {
hcd->flags.b.port_suspend_change = 1;
}
#ifdef CONFIG_USB_DWC_OTG_LPM
else {
hcd->flags.b.port_l1_change = 1;
}
#endif
return 0;
}
/**
* Halts the DWC_otg host mode operations in a clean manner. USB transfers are
* stopped.
*/
void dwc_otg_hcd_stop(dwc_otg_hcd_t * hcd)
{
hprt0_data_t hprt0 = {.d32 = 0 };
DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD STOP\n");
/*
* The root hub should be disconnected before this function is called.
* The disconnect will clear the QTD lists (via ..._hcd_urb_dequeue)
* and the QH lists (via ..._hcd_endpoint_disable).
*/
/* Turn off all host-specific interrupts. */
dwc_otg_disable_host_interrupts(hcd->core_if);
/* Turn off the vbus power */
DWC_PRINTF("PortPower off\n");
hprt0.b.prtpwr = 0;
DWC_WRITE_REG32(hcd->core_if->host_if->hprt0, hprt0.d32);
dwc_mdelay(1);
}
int dwc_otg_hcd_urb_enqueue(dwc_otg_hcd_t * hcd,
dwc_otg_hcd_urb_t * dwc_otg_urb, void **ep_handle,
int atomic_alloc)
{
int retval = 0;
uint8_t needs_scheduling = 0;
dwc_otg_transaction_type_e tr_type;
dwc_otg_qtd_t *qtd;
gintmsk_data_t intr_mask = {.d32 = 0 };
hprt0_data_t hprt0 = { .d32 = 0 };
#ifdef DEBUG /* integrity checks (Broadcom) */
if (NULL == hcd->core_if) {
DWC_ERROR("**** DWC OTG HCD URB Enqueue - HCD has NULL core_if\n");
/* No longer connected. */
return -DWC_E_INVALID;
}
#endif
if (!hcd->flags.b.port_connect_status) {
/* No longer connected. */
DWC_ERROR("Not connected\n");
return -DWC_E_NO_DEVICE;
}
/* Some core configurations cannot support LS traffic on a FS root port */
if ((hcd->fops->speed(hcd, dwc_otg_urb->priv) == USB_SPEED_LOW) &&
(hcd->core_if->hwcfg2.b.fs_phy_type == 1) &&
(hcd->core_if->hwcfg2.b.hs_phy_type == 1)) {
hprt0.d32 = DWC_READ_REG32(hcd->core_if->host_if->hprt0);
if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_FULL_SPEED) {
return -DWC_E_NO_DEVICE;
}
}
qtd = dwc_otg_hcd_qtd_create(dwc_otg_urb, atomic_alloc);
if (qtd == NULL) {
DWC_ERROR("DWC OTG HCD URB Enqueue failed creating QTD\n");
return -DWC_E_NO_MEMORY;
}
#ifdef DEBUG /* integrity checks (Broadcom) */
if (qtd->urb == NULL) {
DWC_ERROR("**** DWC OTG HCD URB Enqueue created QTD with no URBs\n");
return -DWC_E_NO_MEMORY;
}
if (qtd->urb->priv == NULL) {
DWC_ERROR("**** DWC OTG HCD URB Enqueue created QTD URB with no URB handle\n");
return -DWC_E_NO_MEMORY;
}
#endif
intr_mask.d32 = DWC_READ_REG32(&hcd->core_if->core_global_regs->gintmsk);
if(!intr_mask.b.sofintr || fiq_enable) needs_scheduling = 1;
if((((dwc_otg_qh_t *)ep_handle)->ep_type == UE_BULK) && !(qtd->urb->flags & URB_GIVEBACK_ASAP))
/* Do not schedule SG transactions until qtd has URB_GIVEBACK_ASAP set */
needs_scheduling = 0;
retval = dwc_otg_hcd_qtd_add(qtd, hcd, (dwc_otg_qh_t **) ep_handle, atomic_alloc);
// creates a new queue in ep_handle if it doesn't exist already
if (retval < 0) {
DWC_ERROR("DWC OTG HCD URB Enqueue failed adding QTD. "
"Error status %d\n", retval);
dwc_otg_hcd_qtd_free(qtd);
return retval;
}
if(needs_scheduling) {
tr_type = dwc_otg_hcd_select_transactions(hcd);
if (tr_type != DWC_OTG_TRANSACTION_NONE) {
dwc_otg_hcd_queue_transactions(hcd, tr_type);
}
}
return retval;
}
int dwc_otg_hcd_urb_dequeue(dwc_otg_hcd_t * hcd,
dwc_otg_hcd_urb_t * dwc_otg_urb)
{
dwc_otg_qh_t *qh;
dwc_otg_qtd_t *urb_qtd;
BUG_ON(!hcd);
BUG_ON(!dwc_otg_urb);
#ifdef DEBUG /* integrity checks (Broadcom) */
if (hcd == NULL) {
DWC_ERROR("**** DWC OTG HCD URB Dequeue has NULL HCD\n");
return -DWC_E_INVALID;
}
if (dwc_otg_urb == NULL) {
DWC_ERROR("**** DWC OTG HCD URB Dequeue has NULL URB\n");
return -DWC_E_INVALID;
}
if (dwc_otg_urb->qtd == NULL) {
DWC_ERROR("**** DWC OTG HCD URB Dequeue with NULL QTD\n");
return -DWC_E_INVALID;
}
urb_qtd = dwc_otg_urb->qtd;
BUG_ON(!urb_qtd);
if (urb_qtd->qh == NULL) {
DWC_ERROR("**** DWC OTG HCD URB Dequeue with QTD with NULL Q handler\n");
return -DWC_E_INVALID;
}
#else
urb_qtd = dwc_otg_urb->qtd;
BUG_ON(!urb_qtd);
#endif
qh = urb_qtd->qh;
BUG_ON(!qh);
if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
if (urb_qtd->in_process) {
dump_channel_info(hcd, qh);
}
}
#ifdef DEBUG /* integrity checks (Broadcom) */
if (hcd->core_if == NULL) {
DWC_ERROR("**** DWC OTG HCD URB Dequeue HCD has NULL core_if\n");
return -DWC_E_INVALID;
}
#endif
if (urb_qtd->in_process && qh->channel) {
/* The QTD is in process (it has been assigned to a channel). */
if (hcd->flags.b.port_connect_status) {
int n = qh->channel->hc_num;
/*
* If still connected (i.e. in host mode), halt the
* channel so it can be used for other transfers. If
* no longer connected, the host registers can't be
* written to halt the channel since the core is in
* device mode.
*/
/* In FIQ FSM mode, we need to shut down carefully.
* The FIQ may attempt to restart a disabled channel */
if (fiq_fsm_enable && (hcd->fiq_state->channel[n].fsm != FIQ_PASSTHROUGH)) {
int retries = 3;
int running = 0;
enum fiq_fsm_state state;
local_fiq_disable();
fiq_fsm_spin_lock(&hcd->fiq_state->lock);
qh->channel->halt_status = DWC_OTG_HC_XFER_URB_DEQUEUE;
qh->channel->halt_pending = 1;
if (hcd->fiq_state->channel[n].fsm == FIQ_HS_ISOC_TURBO ||
hcd->fiq_state->channel[n].fsm == FIQ_HS_ISOC_SLEEPING)
hcd->fiq_state->channel[n].fsm = FIQ_HS_ISOC_ABORTED;
fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
local_fiq_enable();
if (dwc_qh_is_non_per(qh)) {
do {
state = READ_ONCE(hcd->fiq_state->channel[n].fsm);
running = (state != FIQ_NP_SPLIT_DONE) &&
(state != FIQ_NP_SPLIT_LS_ABORTED) &&
(state != FIQ_NP_SPLIT_HS_ABORTED);
if (!running)
break;
udelay(125);
} while(--retries);
if (!retries)
DWC_WARN("Timed out waiting for FSM NP transfer to complete on %d",
qh->channel->hc_num);
}
} else {
dwc_otg_hc_halt(hcd->core_if, qh->channel,
DWC_OTG_HC_XFER_URB_DEQUEUE);
}
}
}
/*
* Free the QTD and clean up the associated QH. Leave the QH in the
* schedule if it has any remaining QTDs.
*/
DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD URB Dequeue - "
"delete %sQueue handler\n",
hcd->core_if->dma_desc_enable?"DMA ":"");
if (!hcd->core_if->dma_desc_enable) {
uint8_t b = urb_qtd->in_process;
if (nak_holdoff && qh->do_split && dwc_qh_is_non_per(qh))
qh->nak_frame = 0xFFFF;
dwc_otg_hcd_qtd_remove_and_free(hcd, urb_qtd, qh);
if (b) {
dwc_otg_hcd_qh_deactivate(hcd, qh, 0);
qh->channel = NULL;
} else if (DWC_CIRCLEQ_EMPTY(&qh->qtd_list)) {
dwc_otg_hcd_qh_remove(hcd, qh);
}
} else {
dwc_otg_hcd_qtd_remove_and_free(hcd, urb_qtd, qh);
}
return 0;
}
int dwc_otg_hcd_endpoint_disable(dwc_otg_hcd_t * hcd, void *ep_handle,
int retry)
{
dwc_otg_qh_t *qh = (dwc_otg_qh_t *) ep_handle;
int retval = 0;
dwc_irqflags_t flags;
if (retry < 0) {
retval = -DWC_E_INVALID;
goto done;
}
if (!qh) {
retval = -DWC_E_INVALID;
goto done;
}
DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
while (!DWC_CIRCLEQ_EMPTY(&qh->qtd_list) && retry) {
DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
retry--;
dwc_msleep(5);
DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
}
dwc_otg_hcd_qh_remove(hcd, qh);
DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
/*
* Split dwc_otg_hcd_qh_remove_and_free() into qh_remove
* and qh_free to prevent stack dump on DWC_DMA_FREE() with
* irq_disabled (spinlock_irqsave) in dwc_otg_hcd_desc_list_free()
* and dwc_otg_hcd_frame_list_alloc().
*/
dwc_otg_hcd_qh_free(hcd, qh);
done:
return retval;
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,30)
int dwc_otg_hcd_endpoint_reset(dwc_otg_hcd_t * hcd, void *ep_handle)
{
int retval = 0;
dwc_otg_qh_t *qh = (dwc_otg_qh_t *) ep_handle;
if (!qh)
return -DWC_E_INVALID;
qh->data_toggle = DWC_OTG_HC_PID_DATA0;
return retval;
}
#endif
/**
* HCD Callback structure for handling mode switching.
*/
static dwc_otg_cil_callbacks_t hcd_cil_callbacks = {
.start = dwc_otg_hcd_start_cb,
.stop = dwc_otg_hcd_stop_cb,
.disconnect = dwc_otg_hcd_disconnect_cb,
.session_start = dwc_otg_hcd_session_start_cb,
.resume_wakeup = dwc_otg_hcd_rem_wakeup_cb,
#ifdef CONFIG_USB_DWC_OTG_LPM
.sleep = dwc_otg_hcd_sleep_cb,
#endif
.p = 0,
};
/**
* Reset tasklet function
*/
static void reset_tasklet_func(void *data)
{
dwc_otg_hcd_t *dwc_otg_hcd = (dwc_otg_hcd_t *) data;
dwc_otg_core_if_t *core_if = dwc_otg_hcd->core_if;
hprt0_data_t hprt0;
DWC_DEBUGPL(DBG_HCDV, "USB RESET tasklet called\n");
hprt0.d32 = dwc_otg_read_hprt0(core_if);
hprt0.b.prtrst = 1;
DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
dwc_mdelay(60);
hprt0.b.prtrst = 0;
DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
dwc_otg_hcd->flags.b.port_reset_change = 1;
}
static void completion_tasklet_func(void *ptr)
{
dwc_otg_hcd_t *hcd = (dwc_otg_hcd_t *) ptr;
struct urb *urb;
urb_tq_entry_t *item;
dwc_irqflags_t flags;
/* This could just be spin_lock_irq */
DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
while (!DWC_TAILQ_EMPTY(&hcd->completed_urb_list)) {
item = DWC_TAILQ_FIRST(&hcd->completed_urb_list);
urb = item->urb;
DWC_TAILQ_REMOVE(&hcd->completed_urb_list, item,
urb_tq_entries);
DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
DWC_FREE(item);
usb_hcd_giveback_urb(hcd->priv, urb, urb->status);
DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
}
DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
return;
}
static void qh_list_free(dwc_otg_hcd_t * hcd, dwc_list_link_t * qh_list)
{
dwc_list_link_t *item;
dwc_otg_qh_t *qh;
dwc_irqflags_t flags;
if (!qh_list->next) {
/* The list hasn't been initialized yet. */
return;
}
/*
* Hold spinlock here. Not needed in that case if bellow
* function is being called from ISR
*/
DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
/* Ensure there are no QTDs or URBs left. */
kill_urbs_in_qh_list(hcd, qh_list);
DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
DWC_LIST_FOREACH(item, qh_list) {
qh = DWC_LIST_ENTRY(item, dwc_otg_qh_t, qh_list_entry);
dwc_otg_hcd_qh_remove_and_free(hcd, qh);
}
}
/**
* Exit from Hibernation if Host did not detect SRP from connected SRP capable
* Device during SRP time by host power up.
*/
void dwc_otg_hcd_power_up(void *ptr)
{
gpwrdn_data_t gpwrdn = {.d32 = 0 };
dwc_otg_core_if_t *core_if = (dwc_otg_core_if_t *) ptr;
DWC_PRINTF("%s called\n", __FUNCTION__);
if (!core_if->hibernation_suspend) {
DWC_PRINTF("Already exited from Hibernation\n");
return;
}
/* Switch on the voltage to the core */
gpwrdn.b.pwrdnswtch = 1;
DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
dwc_udelay(10);
/* Reset the core */
gpwrdn.d32 = 0;
gpwrdn.b.pwrdnrstn = 1;
DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
dwc_udelay(10);
/* Disable power clamps */
gpwrdn.d32 = 0;
gpwrdn.b.pwrdnclmp = 1;
DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
/* Remove reset the core signal */
gpwrdn.d32 = 0;
gpwrdn.b.pwrdnrstn = 1;
DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
dwc_udelay(10);
/* Disable PMU interrupt */
gpwrdn.d32 = 0;
gpwrdn.b.pmuintsel = 1;
DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
core_if->hibernation_suspend = 0;
/* Disable PMU */
gpwrdn.d32 = 0;
gpwrdn.b.pmuactv = 1;
DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
dwc_udelay(10);
/* Enable VBUS */
gpwrdn.d32 = 0;
gpwrdn.b.dis_vbus = 1;
DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
core_if->op_state = A_HOST;
dwc_otg_core_init(core_if);
dwc_otg_enable_global_interrupts(core_if);
cil_hcd_start(core_if);
}
void dwc_otg_cleanup_fiq_channel(dwc_otg_hcd_t *hcd, uint32_t num)
{
struct fiq_channel_state *st = &hcd->fiq_state->channel[num];
struct fiq_dma_blob *blob = hcd->fiq_dmab;
int i;
st->fsm = FIQ_PASSTHROUGH;
st->hcchar_copy.d32 = 0;
st->hcsplt_copy.d32 = 0;
st->hcint_copy.d32 = 0;
st->hcintmsk_copy.d32 = 0;
st->hctsiz_copy.d32 = 0;
st->hcdma_copy.d32 = 0;
st->nr_errors = 0;
st->hub_addr = 0;
st->port_addr = 0;
st->expected_uframe = 0;
st->nrpackets = 0;
st->dma_info.index = 0;
for (i = 0; i < 6; i++)
st->dma_info.slot_len[i] = 255;
st->hs_isoc_info.index = 0;
st->hs_isoc_info.iso_desc = NULL;
st->hs_isoc_info.nrframes = 0;
DWC_MEMSET(&blob->channel[num].index[0], 0x6b, 1128);
}
/**
* Frees secondary storage associated with the dwc_otg_hcd structure contained
* in the struct usb_hcd field.
*/
static void dwc_otg_hcd_free(dwc_otg_hcd_t * dwc_otg_hcd)
{
struct device *dev = dwc_otg_hcd_to_dev(dwc_otg_hcd);
int i;
DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD FREE\n");
del_timers(dwc_otg_hcd);
/* Free memory for QH/QTD lists */
qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->non_periodic_sched_inactive);
qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->non_periodic_sched_active);
qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_inactive);
qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_ready);
qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_assigned);
qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_queued);
/* Free memory for the host channels. */
for (i = 0; i < MAX_EPS_CHANNELS; i++) {
dwc_hc_t *hc = dwc_otg_hcd->hc_ptr_array[i];
#ifdef DEBUG
if (dwc_otg_hcd->core_if->hc_xfer_timer[i]) {
DWC_TIMER_FREE(dwc_otg_hcd->core_if->hc_xfer_timer[i]);
}
#endif
if (hc != NULL) {
DWC_DEBUGPL(DBG_HCDV, "HCD Free channel #%i, hc=%p\n",
i, hc);
DWC_FREE(hc);
}
}
if (dwc_otg_hcd->core_if->dma_enable) {
if (dwc_otg_hcd->status_buf_dma) {
DWC_DMA_FREE(dev, DWC_OTG_HCD_STATUS_BUF_SIZE,
dwc_otg_hcd->status_buf,
dwc_otg_hcd->status_buf_dma);
}
} else if (dwc_otg_hcd->status_buf != NULL) {
DWC_FREE(dwc_otg_hcd->status_buf);
}
DWC_SPINLOCK_FREE(dwc_otg_hcd->lock);
/* Set core_if's lock pointer to NULL */
dwc_otg_hcd->core_if->lock = NULL;
DWC_TIMER_FREE(dwc_otg_hcd->conn_timer);
DWC_TASK_FREE(dwc_otg_hcd->reset_tasklet);
DWC_TASK_FREE(dwc_otg_hcd->completion_tasklet);
DWC_DMA_FREE(dev, 16, dwc_otg_hcd->fiq_state->dummy_send,
dwc_otg_hcd->fiq_state->dummy_send_dma);
DWC_FREE(dwc_otg_hcd->fiq_state);
#ifdef DWC_DEV_SRPCAP
if (dwc_otg_hcd->core_if->power_down == 2 &&
dwc_otg_hcd->core_if->pwron_timer) {
DWC_TIMER_FREE(dwc_otg_hcd->core_if->pwron_timer);
}
#endif
DWC_FREE(dwc_otg_hcd);
}
int dwc_otg_hcd_init(dwc_otg_hcd_t * hcd, dwc_otg_core_if_t * core_if)
{
struct device *dev = dwc_otg_hcd_to_dev(hcd);
int retval = 0;
int num_channels;
int i;
dwc_hc_t *channel;
#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_SPINLOCK))
DWC_SPINLOCK_ALLOC_LINUX_DEBUG(hcd->lock);
#else
hcd->lock = DWC_SPINLOCK_ALLOC();
#endif
DWC_DEBUGPL(DBG_HCDV, "init of HCD %p given core_if %p\n",
hcd, core_if);
if (!hcd->lock) {
DWC_ERROR("Could not allocate lock for pcd");
DWC_FREE(hcd);
retval = -DWC_E_NO_MEMORY;
goto out;
}
hcd->core_if = core_if;
/* Register the HCD CIL Callbacks */
dwc_otg_cil_register_hcd_callbacks(hcd->core_if,
&hcd_cil_callbacks, hcd);
/* Initialize the non-periodic schedule. */
DWC_LIST_INIT(&hcd->non_periodic_sched_inactive);
DWC_LIST_INIT(&hcd->non_periodic_sched_active);
/* Initialize the periodic schedule. */
DWC_LIST_INIT(&hcd->periodic_sched_inactive);
DWC_LIST_INIT(&hcd->periodic_sched_ready);
DWC_LIST_INIT(&hcd->periodic_sched_assigned);
DWC_LIST_INIT(&hcd->periodic_sched_queued);
DWC_TAILQ_INIT(&hcd->completed_urb_list);
/*
* Create a host channel descriptor for each host channel implemented
* in the controller. Initialize the channel descriptor array.
*/
DWC_CIRCLEQ_INIT(&hcd->free_hc_list);
num_channels = hcd->core_if->core_params->host_channels;
DWC_MEMSET(hcd->hc_ptr_array, 0, sizeof(hcd->hc_ptr_array));
for (i = 0; i < num_channels; i++) {
channel = DWC_ALLOC(sizeof(dwc_hc_t));
if (channel == NULL) {
retval = -DWC_E_NO_MEMORY;
DWC_ERROR("%s: host channel allocation failed\n",
__func__);
dwc_otg_hcd_free(hcd);
goto out;
}
channel->hc_num = i;
hcd->hc_ptr_array[i] = channel;
#ifdef DEBUG
hcd->core_if->hc_xfer_timer[i] =
DWC_TIMER_ALLOC("hc timer", hc_xfer_timeout,
&hcd->core_if->hc_xfer_info[i]);
#endif
DWC_DEBUGPL(DBG_HCDV, "HCD Added channel #%d, hc=%p\n", i,
channel);
}
if (fiq_enable) {
hcd->fiq_state = DWC_ALLOC(sizeof(struct fiq_state) + (sizeof(struct fiq_channel_state) * num_channels));
if (!hcd->fiq_state) {
retval = -DWC_E_NO_MEMORY;
DWC_ERROR("%s: cannot allocate fiq_state structure\n", __func__);
dwc_otg_hcd_free(hcd);
goto out;
}
DWC_MEMSET(hcd->fiq_state, 0, (sizeof(struct fiq_state) + (sizeof(struct fiq_channel_state) * num_channels)));
#ifdef CONFIG_ARM64
spin_lock_init(&hcd->fiq_state->lock);
#endif
for (i = 0; i < num_channels; i++) {
hcd->fiq_state->channel[i].fsm = FIQ_PASSTHROUGH;
}
hcd->fiq_state->dummy_send = DWC_DMA_ALLOC_ATOMIC(dev, 16,
&hcd->fiq_state->dummy_send_dma);
hcd->fiq_stack = DWC_ALLOC(sizeof(struct fiq_stack));
if (!hcd->fiq_stack) {
retval = -DWC_E_NO_MEMORY;
DWC_ERROR("%s: cannot allocate fiq_stack structure\n", __func__);
dwc_otg_hcd_free(hcd);
goto out;
}
hcd->fiq_stack->magic1 = 0xDEADBEEF;
hcd->fiq_stack->magic2 = 0xD00DFEED;
hcd->fiq_state->gintmsk_saved.d32 = ~0;
hcd->fiq_state->haintmsk_saved.b2.chint = ~0;
/* This bit is terrible and uses no API, but necessary. The FIQ has no concept of DMA pools
* (and if it did, would be a lot slower). This allocates a chunk of memory (~9kiB for 8 host channels)
* for use as transaction bounce buffers in a 2-D array. Our access into this chunk is done by some
* moderately readable array casts.
*/
hcd->fiq_dmab = DWC_DMA_ALLOC(dev, (sizeof(struct fiq_dma_channel) * num_channels), &hcd->fiq_state->dma_base);
DWC_WARN("FIQ DMA bounce buffers: virt = %px dma = %pad len=%zu",
hcd->fiq_dmab, &hcd->fiq_state->dma_base,
sizeof(struct fiq_dma_channel) * num_channels);
DWC_MEMSET(hcd->fiq_dmab, 0x6b, 9024);
/* pointer for debug in fiq_print */
hcd->fiq_state->fiq_dmab = hcd->fiq_dmab;
if (fiq_fsm_enable) {
int i;
for (i=0; i < hcd->core_if->core_params->host_channels; i++) {
dwc_otg_cleanup_fiq_channel(hcd, i);
}
DWC_PRINTF("FIQ FSM acceleration enabled for :\n%s%s%s%s",
(fiq_fsm_mask & 0x1) ? "Non-periodic Split Transactions\n" : "",
(fiq_fsm_mask & 0x2) ? "Periodic Split Transactions\n" : "",
(fiq_fsm_mask & 0x4) ? "High-Speed Isochronous Endpoints\n" : "",
(fiq_fsm_mask & 0x8) ? "Interrupt/Control Split Transaction hack enabled\n" : "");
}
}
/* Initialize the Connection timeout timer. */
hcd->conn_timer = DWC_TIMER_ALLOC("Connection timer",
dwc_otg_hcd_connect_timeout, 0);
printk(KERN_DEBUG "dwc_otg: Microframe scheduler %s\n", microframe_schedule ? "enabled":"disabled");
if (microframe_schedule)
init_hcd_usecs(hcd);
/* Initialize reset tasklet. */
hcd->reset_tasklet = DWC_TASK_ALLOC("reset_tasklet", reset_tasklet_func, hcd);
hcd->completion_tasklet = DWC_TASK_ALLOC("completion_tasklet",
completion_tasklet_func, hcd);
#ifdef DWC_DEV_SRPCAP
if (hcd->core_if->power_down == 2) {
/* Initialize Power on timer for Host power up in case hibernation */
hcd->core_if->pwron_timer = DWC_TIMER_ALLOC("PWRON TIMER",
dwc_otg_hcd_power_up, core_if);
}
#endif
/*
* Allocate space for storing data on status transactions. Normally no
* data is sent, but this space acts as a bit bucket. This must be
* done after usb_add_hcd since that function allocates the DMA buffer
* pool.
*/
if (hcd->core_if->dma_enable) {
hcd->status_buf =
DWC_DMA_ALLOC(dev, DWC_OTG_HCD_STATUS_BUF_SIZE,
&hcd->status_buf_dma);
} else {
hcd->status_buf = DWC_ALLOC(DWC_OTG_HCD_STATUS_BUF_SIZE);
}
if (!hcd->status_buf) {
retval = -DWC_E_NO_MEMORY;
DWC_ERROR("%s: status_buf allocation failed\n", __func__);
dwc_otg_hcd_free(hcd);
goto out;
}
hcd->otg_port = 1;
hcd->frame_list = NULL;
hcd->frame_list_dma = 0;
hcd->periodic_qh_count = 0;
DWC_MEMSET(hcd->hub_port, 0, sizeof(hcd->hub_port));
#ifdef FIQ_DEBUG
DWC_MEMSET(hcd->hub_port_alloc, -1, sizeof(hcd->hub_port_alloc));
#endif
out:
return retval;
}
void dwc_otg_hcd_remove(dwc_otg_hcd_t * hcd)
{
/* Turn off all host-specific interrupts. */
dwc_otg_disable_host_interrupts(hcd->core_if);
dwc_otg_hcd_free(hcd);
}
/**
* Initializes dynamic portions of the DWC_otg HCD state.
*/
static void dwc_otg_hcd_reinit(dwc_otg_hcd_t * hcd)
{
int num_channels;
int i;
dwc_hc_t *channel;
dwc_hc_t *channel_tmp;
hcd->flags.d32 = 0;
hcd->non_periodic_qh_ptr = &hcd->non_periodic_sched_active;
if (!microframe_schedule) {
hcd->non_periodic_channels = 0;
hcd->periodic_channels = 0;
} else {
hcd->available_host_channels = hcd->core_if->core_params->host_channels;
}
/*
* Put all channels in the free channel list and clean up channel
* states.
*/
DWC_CIRCLEQ_FOREACH_SAFE(channel, channel_tmp,
&hcd->free_hc_list, hc_list_entry) {
DWC_CIRCLEQ_REMOVE(&hcd->free_hc_list, channel, hc_list_entry);
}
num_channels = hcd->core_if->core_params->host_channels;
for (i = 0; i < num_channels; i++) {
channel = hcd->hc_ptr_array[i];
DWC_CIRCLEQ_INSERT_TAIL(&hcd->free_hc_list, channel,
hc_list_entry);
dwc_otg_hc_cleanup(hcd->core_if, channel);
}
/* Initialize the DWC core for host mode operation. */
dwc_otg_core_host_init(hcd->core_if);
/* Set core_if's lock pointer to the hcd->lock */
hcd->core_if->lock = hcd->lock;
}
/**
* Assigns transactions from a QTD to a free host channel and initializes the
* host channel to perform the transactions. The host channel is removed from
* the free list.
*
* @param hcd The HCD state structure.
* @param qh Transactions from the first QTD for this QH are selected and
* assigned to a free host channel.
*/
static void assign_and_init_hc(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
{
dwc_hc_t *hc;
dwc_otg_qtd_t *qtd;
dwc_otg_hcd_urb_t *urb;
void* ptr = NULL;
uint16_t wLength;
uint32_t intr_enable;
unsigned long flags;
gintmsk_data_t gintmsk = { .d32 = 0, };
struct device *dev = dwc_otg_hcd_to_dev(hcd);
qtd = DWC_CIRCLEQ_FIRST(&qh->qtd_list);
urb = qtd->urb;
DWC_DEBUGPL(DBG_HCDV, "%s(%p,%p) - urb %x, actual_length %d\n", __func__, hcd, qh, (unsigned int)urb, urb->actual_length);
if (((urb->actual_length < 0) || (urb->actual_length > urb->length)) && !dwc_otg_hcd_is_pipe_in(&urb->pipe_info))
urb->actual_length = urb->length;
hc = DWC_CIRCLEQ_FIRST(&hcd->free_hc_list);
/* Remove the host channel from the free list. */
DWC_CIRCLEQ_REMOVE_INIT(&hcd->free_hc_list, hc, hc_list_entry);
qh->channel = hc;
qtd->in_process = 1;
/*
* Use usb_pipedevice to determine device address. This address is
* 0 before the SET_ADDRESS command and the correct address afterward.
*/
hc->dev_addr = dwc_otg_hcd_get_dev_addr(&urb->pipe_info);
hc->ep_num = dwc_otg_hcd_get_ep_num(&urb->pipe_info);
hc->speed = qh->dev_speed;
hc->max_packet = dwc_max_packet(qh->maxp);
hc->xfer_started = 0;
hc->halt_status = DWC_OTG_HC_XFER_NO_HALT_STATUS;
hc->error_state = (qtd->error_count > 0);
hc->halt_on_queue = 0;
hc->halt_pending = 0;
hc->requests = 0;
/*
* The following values may be modified in the transfer type section
* below. The xfer_len value may be reduced when the transfer is
* started to accommodate the max widths of the XferSize and PktCnt
* fields in the HCTSIZn register.
*/
hc->ep_is_in = (dwc_otg_hcd_is_pipe_in(&urb->pipe_info) != 0);
if (hc->ep_is_in) {
hc->do_ping = 0;
} else {
hc->do_ping = qh->ping_state;
}
hc->data_pid_start = qh->data_toggle;
hc->multi_count = 1;
if (hcd->core_if->dma_enable) {
hc->xfer_buff =
(uint8_t *)(uintptr_t)urb->dma + urb->actual_length;
/* For non-dword aligned case */
if (((unsigned long)hc->xfer_buff & 0x3)
&& !hcd->core_if->dma_desc_enable) {
ptr = (uint8_t *) urb->buf + urb->actual_length;
}
} else {
hc->xfer_buff = (uint8_t *) urb->buf + urb->actual_length;
}
hc->xfer_len = urb->length - urb->actual_length;
hc->xfer_count = 0;
/*
* Set the split attributes
*/
hc->do_split = 0;
if (qh->do_split) {
uint32_t hub_addr, port_addr;
hc->do_split = 1;
hc->start_pkt_count = 1;
hc->xact_pos = qtd->isoc_split_pos;
/* We don't need to do complete splits anymore */
// if(fiq_fsm_enable)
if (0)
hc->complete_split = qtd->complete_split = 0;
else
hc->complete_split = qtd->complete_split;
hcd->fops->hub_info(hcd, urb->priv, &hub_addr, &port_addr);
hc->hub_addr = (uint8_t) hub_addr;
hc->port_addr = (uint8_t) port_addr;
}
switch (dwc_otg_hcd_get_pipe_type(&urb->pipe_info)) {
case UE_CONTROL:
hc->ep_type = DWC_OTG_EP_TYPE_CONTROL;
switch (qtd->control_phase) {
case DWC_OTG_CONTROL_SETUP:
DWC_DEBUGPL(DBG_HCDV, " Control setup transaction\n");
hc->do_ping = 0;
hc->ep_is_in = 0;
hc->data_pid_start = DWC_OTG_HC_PID_SETUP;
if (hcd->core_if->dma_enable) {
hc->xfer_buff =
(uint8_t *)(uintptr_t)urb->setup_dma;
} else {
hc->xfer_buff = (uint8_t *) urb->setup_packet;
}
hc->xfer_len = 8;
ptr = NULL;
break;
case DWC_OTG_CONTROL_DATA:
DWC_DEBUGPL(DBG_HCDV, " Control data transaction\n");
/*
* Hardware bug: small IN packets with length < 4
* cause a 4-byte write to memory. We can only catch
* the case where we know a short packet is going to be
* returned in a control transfer, as the length is
* specified in the setup packet. This is only an issue
* for drivers that insist on packing a device's various
* properties into a struct and querying them one at a
* time (uvcvideo).
* Force the use of align_buf so that the subsequent
* memcpy puts the right number of bytes in the URB's
* buffer.
*/
wLength = ((uint16_t *)urb->setup_packet)[3];
if (hc->ep_is_in && wLength < 4)
ptr = hc->xfer_buff;
hc->data_pid_start = qtd->data_toggle;
break;
case DWC_OTG_CONTROL_STATUS:
/*
* Direction is opposite of data direction or IN if no
* data.
*/
DWC_DEBUGPL(DBG_HCDV, " Control status transaction\n");
if (urb->length == 0) {
hc->ep_is_in = 1;
} else {
hc->ep_is_in =
dwc_otg_hcd_is_pipe_out(&urb->pipe_info);
}
if (hc->ep_is_in) {
hc->do_ping = 0;
}
hc->data_pid_start = DWC_OTG_HC_PID_DATA1;
hc->xfer_len = 0;
if (hcd->core_if->dma_enable) {
hc->xfer_buff = (uint8_t *)
(uintptr_t)hcd->status_buf_dma;
} else {
hc->xfer_buff = (uint8_t *) hcd->status_buf;
}
ptr = NULL;
break;
}
break;
case UE_BULK:
hc->ep_type = DWC_OTG_EP_TYPE_BULK;
break;
case UE_INTERRUPT:
hc->ep_type = DWC_OTG_EP_TYPE_INTR;
break;
case UE_ISOCHRONOUS:
{
struct dwc_otg_hcd_iso_packet_desc *frame_desc;
hc->ep_type = DWC_OTG_EP_TYPE_ISOC;
if (hcd->core_if->dma_desc_enable)
break;
frame_desc = &urb->iso_descs[qtd->isoc_frame_index];
frame_desc->status = 0;
if (hcd->core_if->dma_enable) {
hc->xfer_buff = (uint8_t *)(uintptr_t)urb->dma;
} else {
hc->xfer_buff = (uint8_t *) urb->buf;
}
hc->xfer_buff +=
frame_desc->offset + qtd->isoc_split_offset;
hc->xfer_len =
frame_desc->length - qtd->isoc_split_offset;
/* For non-dword aligned buffers */
if (((unsigned long)hc->xfer_buff & 0x3)
&& hcd->core_if->dma_enable) {
ptr =
(uint8_t *) urb->buf + frame_desc->offset +
qtd->isoc_split_offset;
} else
ptr = NULL;
if (hc->xact_pos == DWC_HCSPLIT_XACTPOS_ALL) {
if (hc->xfer_len <= 188) {
hc->xact_pos = DWC_HCSPLIT_XACTPOS_ALL;
} else {
hc->xact_pos =
DWC_HCSPLIT_XACTPOS_BEGIN;
}
}
}
break;
}
/* non DWORD-aligned buffer case */
if (ptr) {
uint32_t buf_size;
if (hc->ep_type != DWC_OTG_EP_TYPE_ISOC) {
buf_size = hcd->core_if->core_params->max_transfer_size;
} else {
buf_size = 4096;
}
if (!qh->dw_align_buf) {
qh->dw_align_buf = DWC_DMA_ALLOC_ATOMIC(dev, buf_size,
&qh->dw_align_buf_dma);
if (!qh->dw_align_buf) {
DWC_ERROR
("%s: Failed to allocate memory to handle "
"non-dword aligned buffer case\n",
__func__);
return;
}
}
if (!hc->ep_is_in) {
dwc_memcpy(qh->dw_align_buf, ptr, hc->xfer_len);
}
hc->align_buff = qh->dw_align_buf_dma;
} else {
hc->align_buff = 0;
}
if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
/*
* This value may be modified when the transfer is started to
* reflect the actual transfer length.
*/
hc->multi_count = dwc_hb_mult(qh->maxp);
}
if (hcd->core_if->dma_desc_enable)
hc->desc_list_addr = qh->desc_list_dma;
dwc_otg_hc_init(hcd->core_if, hc);
local_irq_save(flags);
if (fiq_enable) {
local_fiq_disable();
fiq_fsm_spin_lock(&hcd->fiq_state->lock);
}
/* Enable the top level host channel interrupt. */
intr_enable = (1 << hc->hc_num);
DWC_MODIFY_REG32(&hcd->core_if->host_if->host_global_regs->haintmsk, 0, intr_enable);
/* Make sure host channel interrupts are enabled. */
gintmsk.b.hcintr = 1;
DWC_MODIFY_REG32(&hcd->core_if->core_global_regs->gintmsk, 0, gintmsk.d32);
if (fiq_enable) {
fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
local_fiq_enable();
}
local_irq_restore(flags);
hc->qh = qh;
}
/**
* fiq_fsm_transaction_suitable() - Test a QH for compatibility with the FIQ
* @hcd: Pointer to the dwc_otg_hcd struct
* @qh: pointer to the endpoint's queue head
*
* Transaction start/end control flow is grafted onto the existing dwc_otg
* mechanisms, to avoid spaghettifying the functions more than they already are.
* This function's eligibility check is altered by debug parameter.
*
* Returns: 0 for unsuitable, 1 implies the FIQ can be enabled for this transaction.
*/
int fiq_fsm_transaction_suitable(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
{
if (qh->do_split) {
switch (qh->ep_type) {
case UE_CONTROL:
case UE_BULK:
if (fiq_fsm_mask & (1 << 0))
return 1;
break;
case UE_INTERRUPT:
case UE_ISOCHRONOUS:
if (fiq_fsm_mask & (1 << 1))
return 1;
break;
default:
break;
}
} else if (qh->ep_type == UE_ISOCHRONOUS) {
if (fiq_fsm_mask & (1 << 2)) {
/* ISOCH support. We test for compatibility:
* - DWORD aligned buffers
* - Must be at least 2 transfers (otherwise pointless to use the FIQ)
* If yes, then the fsm enqueue function will handle the state machine setup.
*/
dwc_otg_qtd_t *qtd = DWC_CIRCLEQ_FIRST(&qh->qtd_list);
dwc_otg_hcd_urb_t *urb = qtd->urb;
dwc_dma_t ptr;
int i;
if (urb->packet_count < 2)
return 0;
for (i = 0; i < urb->packet_count; i++) {
ptr = urb->dma + urb->iso_descs[i].offset;
if (ptr & 0x3)
return 0;
}
return 1;
}
}
return 0;
}
/**
* fiq_fsm_setup_periodic_dma() - Set up DMA bounce buffers
* @hcd: Pointer to the dwc_otg_hcd struct
* @qh: Pointer to the endpoint's queue head
*
* Periodic split transactions are transmitted modulo 188 bytes.
* This necessitates slicing data up into buckets for isochronous out
* and fixing up the DMA address for all IN transfers.
*
* Returns 1 if the DMA bounce buffers have been used, 0 if the default
* HC buffer has been used.
*/
int fiq_fsm_setup_periodic_dma(dwc_otg_hcd_t *hcd, struct fiq_channel_state *st, dwc_otg_qh_t *qh)
{
int frame_length, i = 0;
uint8_t *ptr = NULL;
dwc_hc_t *hc = qh->channel;
struct fiq_dma_blob *blob;
struct dwc_otg_hcd_iso_packet_desc *frame_desc;
for (i = 0; i < 6; i++) {
st->dma_info.slot_len[i] = 255;
}
st->dma_info.index = 0;
i = 0;
if (hc->ep_is_in) {
/*
* Set dma_regs to bounce buffer. FIQ will update the
* state depending on transaction progress.
* Pointer arithmetic on hcd->fiq_state->dma_base (a dma_addr_t)
* to point it to the correct offset in the allocated buffers.
*/
blob = (struct fiq_dma_blob *)
(uintptr_t)hcd->fiq_state->dma_base;
st->hcdma_copy.d32 =(u32)(uintptr_t)
blob->channel[hc->hc_num].index[0].buf;
/* Calculate the max number of CSPLITS such that the FIQ can time out
* a transaction if it fails.
*/
frame_length = st->hcchar_copy.b.mps;
do {
i++;
frame_length -= 188;
} while (frame_length >= 0);
st->nrpackets = i;
return 1;
} else {
if (qh->ep_type == UE_ISOCHRONOUS) {
dwc_otg_qtd_t *qtd = DWC_CIRCLEQ_FIRST(&qh->qtd_list);
frame_desc = &qtd->urb->iso_descs[qtd->isoc_frame_index];
frame_length = frame_desc->length;
/* Virtual address for bounce buffers */
blob = hcd->fiq_dmab;
ptr = qtd->urb->buf + frame_desc->offset;
if (frame_length == 0) {
/*
* for isochronous transactions, we must still transmit a packet
* even if the length is zero.
*/
st->dma_info.slot_len[0] = 0;
st->nrpackets = 1;
} else {
do {
if (frame_length <= 188) {
dwc_memcpy(&blob->channel[hc->hc_num].index[i].buf[0], ptr, frame_length);
st->dma_info.slot_len[i] = frame_length;
ptr += frame_length;
} else {
dwc_memcpy(&blob->channel[hc->hc_num].index[i].buf[0], ptr, 188);
st->dma_info.slot_len[i] = 188;
ptr += 188;
}
i++;
frame_length -= 188;
} while (frame_length > 0);
st->nrpackets = i;
}
ptr = qtd->urb->buf + frame_desc->offset;
/*
* Point the HC at the DMA address of the bounce buffers
*
* Pointer arithmetic on hcd->fiq_state->dma_base (a
* dma_addr_t) to point it to the correct offset in the
* allocated buffers.
*/
blob = (struct fiq_dma_blob *)
(uintptr_t)hcd->fiq_state->dma_base;
st->hcdma_copy.d32 = (u32)(uintptr_t)
blob->channel[hc->hc_num].index[0].buf;
/* fixup xfersize to the actual packet size */
st->hctsiz_copy.b.pid = 0;
st->hctsiz_copy.b.xfersize = st->dma_info.slot_len[0];
return 1;
} else {
/* For interrupt, single OUT packet required, goes in the SSPLIT from hc_buff. */
return 0;
}
}
}
/**
* fiq_fsm_np_tt_contended() - Avoid performing contended non-periodic transfers
* @hcd: Pointer to the dwc_otg_hcd struct
* @qh: Pointer to the endpoint's queue head
*
* Certain hub chips don't differentiate between IN and OUT non-periodic pipes
* with the same endpoint number. If transfers get completed out of order
* (disregarding the direction token) then the hub can lock up
* or return erroneous responses.
*
* Returns 1 if initiating the transfer would cause contention, 0 otherwise.
*/
int fiq_fsm_np_tt_contended(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
{
int i;
struct fiq_channel_state *st;
int dev_addr = qh->channel->dev_addr;
int ep_num = qh->channel->ep_num;
for (i = 0; i < hcd->core_if->core_params->host_channels; i++) {
if (i == qh->channel->hc_num)
continue;
st = &hcd->fiq_state->channel[i];
switch (st->fsm) {
case FIQ_NP_SSPLIT_STARTED:
case FIQ_NP_SSPLIT_RETRY:
case FIQ_NP_SSPLIT_PENDING:
case FIQ_NP_OUT_CSPLIT_RETRY:
case FIQ_NP_IN_CSPLIT_RETRY:
if (st->hcchar_copy.b.devaddr == dev_addr &&
st->hcchar_copy.b.epnum == ep_num)
return 1;
break;
default:
break;
}
}
return 0;
}
/*
* Pushing a periodic request into the queue near the EOF1 point
* in a microframe causes erroneous behaviour (frmovrun) interrupt.
* Usually, the request goes out on the bus causing a transfer but
* the core does not transfer the data to memory.
* This guard interval (in number of 60MHz clocks) is required which
* must cater for CPU latency between reading the value and enabling
* the channel.
*/
#define PERIODIC_FRREM_BACKOFF 1000
int fiq_fsm_queue_isoc_transaction(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
{
dwc_hc_t *hc = qh->channel;
dwc_otg_hc_regs_t *hc_regs = hcd->core_if->host_if->hc_regs[hc->hc_num];
dwc_otg_qtd_t *qtd = DWC_CIRCLEQ_FIRST(&qh->qtd_list);
int frame;
struct fiq_channel_state *st = &hcd->fiq_state->channel[hc->hc_num];
int xfer_len, nrpackets;
hcdma_data_t hcdma;
hfnum_data_t hfnum;
if (st->fsm != FIQ_PASSTHROUGH)
return 0;
st->nr_errors = 0;
st->hcchar_copy.d32 = 0;
st->hcchar_copy.b.mps = hc->max_packet;
st->hcchar_copy.b.epdir = hc->ep_is_in;
st->hcchar_copy.b.devaddr = hc->dev_addr;
st->hcchar_copy.b.epnum = hc->ep_num;
st->hcchar_copy.b.eptype = hc->ep_type;
st->hcintmsk_copy.b.chhltd = 1;
frame = dwc_otg_hcd_get_frame_number(hcd);
st->hcchar_copy.b.oddfrm = (frame & 0x1) ? 0 : 1;
st->hcchar_copy.b.lspddev = 0;
/* Enable the channel later as a final register write. */
st->hcsplt_copy.d32 = 0;
st->hs_isoc_info.iso_desc = (struct dwc_otg_hcd_iso_packet_desc *) &qtd->urb->iso_descs;
st->hs_isoc_info.nrframes = qtd->urb->packet_count;
/* grab the next DMA address offset from the array */
st->hcdma_copy.d32 = qtd->urb->dma;
hcdma.d32 = st->hcdma_copy.d32 + st->hs_isoc_info.iso_desc[0].offset;
/* We need to set multi_count. This is a bit tricky - has to be set per-transaction as
* the core needs to be told to send the correct number. Caution: for IN transfers,
* this is always set to the maximum size of the endpoint. */
xfer_len = st->hs_isoc_info.iso_desc[0].length;
nrpackets = (xfer_len + st->hcchar_copy.b.mps - 1) / st->hcchar_copy.b.mps;
if (nrpackets == 0)
nrpackets = 1;
st->hcchar_copy.b.multicnt = nrpackets;
st->hctsiz_copy.b.pktcnt = nrpackets;
/* Initial PID also needs to be set */
if (st->hcchar_copy.b.epdir == 0) {
st->hctsiz_copy.b.xfersize = xfer_len;
switch (st->hcchar_copy.b.multicnt) {
case 1:
st->hctsiz_copy.b.pid = DWC_PID_DATA0;
break;
case 2:
case 3:
st->hctsiz_copy.b.pid = DWC_PID_MDATA;
break;
}
} else {
st->hctsiz_copy.b.xfersize = nrpackets * st->hcchar_copy.b.mps;
switch (st->hcchar_copy.b.multicnt) {
case 1:
st->hctsiz_copy.b.pid = DWC_PID_DATA0;
break;
case 2:
st->hctsiz_copy.b.pid = DWC_PID_DATA1;
break;
case 3:
st->hctsiz_copy.b.pid = DWC_PID_DATA2;
break;
}
}
st->hs_isoc_info.stride = qh->interval;
st->uframe_sleeps = 0;
fiq_print(FIQDBG_INT, hcd->fiq_state, "FSMQ %01d ", hc->hc_num);
fiq_print(FIQDBG_INT, hcd->fiq_state, "%08x", st->hcchar_copy.d32);
fiq_print(FIQDBG_INT, hcd->fiq_state, "%08x", st->hctsiz_copy.d32);
fiq_print(FIQDBG_INT, hcd->fiq_state, "%08x", st->hcdma_copy.d32);
hfnum.d32 = DWC_READ_REG32(&hcd->core_if->host_if->host_global_regs->hfnum);
local_fiq_disable();
fiq_fsm_spin_lock(&hcd->fiq_state->lock);
DWC_WRITE_REG32(&hc_regs->hctsiz, st->hctsiz_copy.d32);
DWC_WRITE_REG32(&hc_regs->hcsplt, st->hcsplt_copy.d32);
DWC_WRITE_REG32(&hc_regs->hcdma, st->hcdma_copy.d32);
DWC_WRITE_REG32(&hc_regs->hcchar, st->hcchar_copy.d32);
DWC_WRITE_REG32(&hc_regs->hcintmsk, st->hcintmsk_copy.d32);
if (hfnum.b.frrem < PERIODIC_FRREM_BACKOFF) {
/* Prevent queueing near EOF1. Bad things happen if a periodic
* split transaction is queued very close to EOF. SOF interrupt handler
* will wake this channel at the next interrupt.
*/
st->fsm = FIQ_HS_ISOC_SLEEPING;
st->uframe_sleeps = 1;
} else {
st->fsm = FIQ_HS_ISOC_TURBO;
st->hcchar_copy.b.chen = 1;
DWC_WRITE_REG32(&hc_regs->hcchar, st->hcchar_copy.d32);
}
mb();
st->hcchar_copy.b.chen = 0;
fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
local_fiq_enable();
return 0;
}
/**
* fiq_fsm_queue_split_transaction() - Set up a host channel and FIQ state
* @hcd: Pointer to the dwc_otg_hcd struct
* @qh: Pointer to the endpoint's queue head
*
* This overrides the dwc_otg driver's normal method of queueing a transaction.
* Called from dwc_otg_hcd_queue_transactions(), this performs specific setup
* for the nominated host channel.
*
* For periodic transfers, it also peeks at the FIQ state to see if an immediate
* start is possible. If not, then the FIQ is left to start the transfer.
*/
int fiq_fsm_queue_split_transaction(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
{
int start_immediate = 1, i;
hfnum_data_t hfnum;
dwc_hc_t *hc = qh->channel;
dwc_otg_hc_regs_t *hc_regs = hcd->core_if->host_if->hc_regs[hc->hc_num];
/* Program HC registers, setup FIQ_state, examine FIQ if periodic, start transfer (not if uframe 5) */
int hub_addr, port_addr, frame, uframe;
struct fiq_channel_state *st = &hcd->fiq_state->channel[hc->hc_num];
/*
* Non-periodic channel assignments stay in the non_periodic_active queue.
* Therefore we get repeatedly called until the FIQ's done processing this channel.
*/
if (qh->channel->xfer_started == 1)
return 0;
if (st->fsm != FIQ_PASSTHROUGH) {
pr_warn_ratelimited("%s:%d: Queue called for an active channel\n", __func__, __LINE__);
return 0;
}
qh->channel->xfer_started = 1;
st->nr_errors = 0;
st->hcchar_copy.d32 = 0;
st->hcchar_copy.b.mps = min_t(uint32_t, hc->xfer_len, hc->max_packet);
st->hcchar_copy.b.epdir = hc->ep_is_in;
st->hcchar_copy.b.devaddr = hc->dev_addr;
st->hcchar_copy.b.epnum = hc->ep_num;
st->hcchar_copy.b.eptype = hc->ep_type;
if (hc->ep_type & 0x1) {
if (hc->ep_is_in)
st->hcchar_copy.b.multicnt = 3;
else
/* Docs say set this to 1, but driver sets to 0! */
st->hcchar_copy.b.multicnt = 0;
} else {
st->hcchar_copy.b.multicnt = 1;
st->hcchar_copy.b.oddfrm = 0;
}
st->hcchar_copy.b.lspddev = (hc->speed == DWC_OTG_EP_SPEED_LOW) ? 1 : 0;
/* Enable the channel later as a final register write. */
st->hcsplt_copy.d32 = 0;
if(qh->do_split) {
hcd->fops->hub_info(hcd, DWC_CIRCLEQ_FIRST(&qh->qtd_list)->urb->priv, &hub_addr, &port_addr);
st->hcsplt_copy.b.compsplt = 0;
st->hcsplt_copy.b.spltena = 1;
// XACTPOS is for isoc-out only but needs initialising anyway.
st->hcsplt_copy.b.xactpos = ISOC_XACTPOS_ALL;
if((qh->ep_type == DWC_OTG_EP_TYPE_ISOC) && (!qh->ep_is_in)) {
/* For packetsize 0 < L < 188, ISOC_XACTPOS_ALL.
* for longer than this, ISOC_XACTPOS_BEGIN and the FIQ
* will update as necessary.
*/
if (hc->xfer_len > 188) {
st->hcsplt_copy.b.xactpos = ISOC_XACTPOS_BEGIN;
}
}
st->hcsplt_copy.b.hubaddr = (uint8_t) hub_addr;
st->hcsplt_copy.b.prtaddr = (uint8_t) port_addr;
st->hub_addr = hub_addr;
st->port_addr = port_addr;
}
st->hctsiz_copy.d32 = 0;
st->hctsiz_copy.b.dopng = 0;
st->hctsiz_copy.b.pid = hc->data_pid_start;
if (hc->ep_is_in || (hc->xfer_len > hc->max_packet)) {
hc->xfer_len = min_t(uint32_t, hc->xfer_len, hc->max_packet);
} else if (!hc->ep_is_in && (hc->xfer_len > 188)) {
hc->xfer_len = 188;
}
st->hctsiz_copy.b.xfersize = hc->xfer_len;
st->hctsiz_copy.b.pktcnt = 1;
if (hc->ep_type & 0x1) {
/*
* For potentially multi-packet transfers, must use the DMA bounce buffers. For IN transfers,
* the DMA address is the address of the first 188byte slot buffer in the bounce buffer array.
* For multi-packet OUT transfers, we need to copy the data into the bounce buffer array so the FIQ can punt
* the right address out as necessary. hc->xfer_buff and hc->xfer_len have already been set
* in assign_and_init_hc(), but this is for the eventual transaction completion only. The FIQ
* must not touch internal driver state.
*/
if(!fiq_fsm_setup_periodic_dma(hcd, st, qh)) {
if (hc->align_buff) {
st->hcdma_copy.d32 = hc->align_buff;
} else {
st->hcdma_copy.d32 = ((unsigned long) hc->xfer_buff & 0xFFFFFFFF);
}
}
} else {
if (hc->align_buff) {
st->hcdma_copy.d32 = hc->align_buff;
} else {
st->hcdma_copy.d32 = ((unsigned long) hc->xfer_buff & 0xFFFFFFFF);
}
}
/* The FIQ depends upon no other interrupts being enabled except channel halt.
* Fixup channel interrupt mask. */
st->hcintmsk_copy.d32 = 0;
st->hcintmsk_copy.b.chhltd = 1;
st->hcintmsk_copy.b.ahberr = 1;
/* Hack courtesy of FreeBSD: apparently forcing Interrupt Split transactions
* as Control puts the transfer into the non-periodic request queue and the
* non-periodic handler in the hub. Makes things lots easier.
*/
if ((fiq_fsm_mask & 0x8) && hc->ep_type == UE_INTERRUPT) {
st->hcchar_copy.b.multicnt = 0;
st->hcchar_copy.b.oddfrm = 0;
st->hcchar_copy.b.eptype = UE_CONTROL;
if (hc->align_buff) {
st->hcdma_copy.d32 = hc->align_buff;
} else {
st->hcdma_copy.d32 = ((unsigned long) hc->xfer_buff & 0xFFFFFFFF);
}
}
DWC_WRITE_REG32(&hc_regs->hcdma, st->hcdma_copy.d32);
DWC_WRITE_REG32(&hc_regs->hctsiz, st->hctsiz_copy.d32);
DWC_WRITE_REG32(&hc_regs->hcsplt, st->hcsplt_copy.d32);
DWC_WRITE_REG32(&hc_regs->hcchar, st->hcchar_copy.d32);
DWC_WRITE_REG32(&hc_regs->hcintmsk, st->hcintmsk_copy.d32);
local_fiq_disable();
fiq_fsm_spin_lock(&hcd->fiq_state->lock);
if (hc->ep_type & 0x1) {
hfnum.d32 = DWC_READ_REG32(&hcd->core_if->host_if->host_global_regs->hfnum);
frame = (hfnum.b.frnum & ~0x7) >> 3;
uframe = hfnum.b.frnum & 0x7;
if (hfnum.b.frrem < PERIODIC_FRREM_BACKOFF) {
/* Prevent queueing near EOF1. Bad things happen if a periodic
* split transaction is queued very close to EOF.
*/
start_immediate = 0;
} else if (uframe == 5) {
start_immediate = 0;
} else if (hc->ep_type == UE_ISOCHRONOUS && !hc->ep_is_in) {
start_immediate = 0;
} else if (hc->ep_is_in && fiq_fsm_too_late(hcd->fiq_state, hc->hc_num)) {
start_immediate = 0;
} else {
/* Search through all host channels to determine if a transaction
* is currently in progress */
for (i = 0; i < hcd->core_if->core_params->host_channels; i++) {
if (i == hc->hc_num || hcd->fiq_state->channel[i].fsm == FIQ_PASSTHROUGH)
continue;
switch (hcd->fiq_state->channel[i].fsm) {
/* TT is reserved for channels that are in the middle of a periodic
* split transaction.
*/
case FIQ_PER_SSPLIT_STARTED:
case FIQ_PER_CSPLIT_WAIT:
case FIQ_PER_CSPLIT_NYET1:
case FIQ_PER_CSPLIT_POLL:
case FIQ_PER_ISO_OUT_ACTIVE:
case FIQ_PER_ISO_OUT_LAST:
if (hcd->fiq_state->channel[i].hub_addr == hub_addr &&
hcd->fiq_state->channel[i].port_addr == port_addr) {
start_immediate = 0;
}
break;
default:
break;
}
if (!start_immediate)
break;
}
}
}
if ((fiq_fsm_mask & 0x8) && hc->ep_type == UE_INTERRUPT)
start_immediate = 1;
fiq_print(FIQDBG_INT, hcd->fiq_state, "FSMQ %01d %01d", hc->hc_num, start_immediate);
fiq_print(FIQDBG_INT, hcd->fiq_state, "%08d", hfnum.b.frrem);
//fiq_print(FIQDBG_INT, hcd->fiq_state, "H:%02dP:%02d", hub_addr, port_addr);
//fiq_print(FIQDBG_INT, hcd->fiq_state, "%08x", st->hctsiz_copy.d32);
//fiq_print(FIQDBG_INT, hcd->fiq_state, "%08x", st->hcdma_copy.d32);
switch (hc->ep_type) {
case UE_CONTROL:
case UE_BULK:
if (fiq_fsm_np_tt_contended(hcd, qh)) {
st->fsm = FIQ_NP_SSPLIT_PENDING;
start_immediate = 0;
} else {
st->fsm = FIQ_NP_SSPLIT_STARTED;
}
break;
case UE_ISOCHRONOUS:
if (hc->ep_is_in) {
if (start_immediate) {
st->fsm = FIQ_PER_SSPLIT_STARTED;
} else {
st->fsm = FIQ_PER_SSPLIT_QUEUED;
}
} else {
if (start_immediate) {
/* Single-isoc OUT packets don't require FIQ involvement */
if (st->nrpackets == 1) {
st->fsm = FIQ_PER_ISO_OUT_LAST;
} else {
st->fsm = FIQ_PER_ISO_OUT_ACTIVE;
}
} else {
st->fsm = FIQ_PER_ISO_OUT_PENDING;
}
}
break;
case UE_INTERRUPT:
if (fiq_fsm_mask & 0x8) {
if (fiq_fsm_np_tt_contended(hcd, qh)) {
st->fsm = FIQ_NP_SSPLIT_PENDING;
start_immediate = 0;
} else {
st->fsm = FIQ_NP_SSPLIT_STARTED;
}
} else if (start_immediate) {
st->fsm = FIQ_PER_SSPLIT_STARTED;
} else {
st->fsm = FIQ_PER_SSPLIT_QUEUED;
}
default:
break;
}
if (start_immediate) {
/* Set the oddfrm bit as close as possible to actual queueing */
frame = dwc_otg_hcd_get_frame_number(hcd);
st->expected_uframe = (frame + 1) & 0x3FFF;
st->hcchar_copy.b.oddfrm = (frame & 0x1) ? 0 : 1;
st->hcchar_copy.b.chen = 1;
DWC_WRITE_REG32(&hc_regs->hcchar, st->hcchar_copy.d32);
}
mb();
fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
local_fiq_enable();
return 0;
}
/**
* This function selects transactions from the HCD transfer schedule and
* assigns them to available host channels. It is called from HCD interrupt
* handler functions.
*
* @param hcd The HCD state structure.
*
* @return The types of new transactions that were assigned to host channels.
*/
dwc_otg_transaction_type_e dwc_otg_hcd_select_transactions(dwc_otg_hcd_t * hcd)
{
dwc_list_link_t *qh_ptr;
dwc_otg_qh_t *qh;
int num_channels;
dwc_otg_transaction_type_e ret_val = DWC_OTG_TRANSACTION_NONE;
#ifdef DEBUG_HOST_CHANNELS
last_sel_trans_num_per_scheduled = 0;
last_sel_trans_num_nonper_scheduled = 0;
last_sel_trans_num_avail_hc_at_start = hcd->available_host_channels;
#endif /* DEBUG_HOST_CHANNELS */
/* Process entries in the periodic ready list. */
qh_ptr = DWC_LIST_FIRST(&hcd->periodic_sched_ready);
while (qh_ptr != &hcd->periodic_sched_ready &&
!DWC_CIRCLEQ_EMPTY(&hcd->free_hc_list)) {
qh = DWC_LIST_ENTRY(qh_ptr, dwc_otg_qh_t, qh_list_entry);
if (microframe_schedule) {
// Make sure we leave one channel for non periodic transactions.
if (hcd->available_host_channels <= 1) {
break;
}
hcd->available_host_channels--;
#ifdef DEBUG_HOST_CHANNELS
last_sel_trans_num_per_scheduled++;
#endif /* DEBUG_HOST_CHANNELS */
}
qh = DWC_LIST_ENTRY(qh_ptr, dwc_otg_qh_t, qh_list_entry);
assign_and_init_hc(hcd, qh);
/*
* Move the QH from the periodic ready schedule to the
* periodic assigned schedule.
*/
qh_ptr = DWC_LIST_NEXT(qh_ptr);
DWC_LIST_MOVE_HEAD(&hcd->periodic_sched_assigned,
&qh->qh_list_entry);
}
/*
* Process entries in the inactive portion of the non-periodic
* schedule. Some free host channels may not be used if they are
* reserved for periodic transfers.
*/
qh_ptr = hcd->non_periodic_sched_inactive.next;
num_channels = hcd->core_if->core_params->host_channels;
while (qh_ptr != &hcd->non_periodic_sched_inactive &&
(microframe_schedule || hcd->non_periodic_channels <
num_channels - hcd->periodic_channels) &&
!DWC_CIRCLEQ_EMPTY(&hcd->free_hc_list)) {
qh = DWC_LIST_ENTRY(qh_ptr, dwc_otg_qh_t, qh_list_entry);
/*
* Check to see if this is a NAK'd retransmit, in which case ignore for retransmission
* we hold off on bulk retransmissions to reduce NAK interrupt overhead for full-speed
* cheeky devices that just hold off using NAKs
*/
if (fiq_enable && nak_holdoff && qh->do_split) {
if (qh->nak_frame != 0xffff) {
uint16_t next_frame = dwc_frame_num_inc(qh->nak_frame, (qh->ep_type == UE_BULK) ? nak_holdoff : 8);
uint16_t frame = dwc_otg_hcd_get_frame_number(hcd);
if (dwc_frame_num_le(frame, next_frame)) {
if(dwc_frame_num_le(next_frame, hcd->fiq_state->next_sched_frame)) {
hcd->fiq_state->next_sched_frame = next_frame;
}
qh_ptr = DWC_LIST_NEXT(qh_ptr);
continue;
} else {
qh->nak_frame = 0xFFFF;
}
}
}
if (microframe_schedule) {
if (hcd->available_host_channels < 1) {
break;
}
hcd->available_host_channels--;
#ifdef DEBUG_HOST_CHANNELS
last_sel_trans_num_nonper_scheduled++;
#endif /* DEBUG_HOST_CHANNELS */
}
assign_and_init_hc(hcd, qh);
/*
* Move the QH from the non-periodic inactive schedule to the
* non-periodic active schedule.
*/
qh_ptr = DWC_LIST_NEXT(qh_ptr);
DWC_LIST_MOVE_HEAD(&hcd->non_periodic_sched_active,
&qh->qh_list_entry);
if (!microframe_schedule)
hcd->non_periodic_channels++;
}
/* we moved a non-periodic QH to the active schedule. If the inactive queue is empty,
* stop the FIQ from kicking us. We could potentially still have elements here if we
* ran out of host channels.
*/
if (fiq_enable) {
if (DWC_LIST_EMPTY(&hcd->non_periodic_sched_inactive)) {
hcd->fiq_state->kick_np_queues = 0;
} else {
/* For each entry remaining in the NP inactive queue,
* if this a NAK'd retransmit then don't set the kick flag.
*/
if(nak_holdoff) {
DWC_LIST_FOREACH(qh_ptr, &hcd->non_periodic_sched_inactive) {
qh = DWC_LIST_ENTRY(qh_ptr, dwc_otg_qh_t, qh_list_entry);
if (qh->nak_frame == 0xFFFF) {
hcd->fiq_state->kick_np_queues = 1;
}
}
}
}
}
if(!DWC_LIST_EMPTY(&hcd->periodic_sched_assigned))
ret_val |= DWC_OTG_TRANSACTION_PERIODIC;
if(!DWC_LIST_EMPTY(&hcd->non_periodic_sched_active))
ret_val |= DWC_OTG_TRANSACTION_NON_PERIODIC;
#ifdef DEBUG_HOST_CHANNELS
last_sel_trans_num_avail_hc_at_end = hcd->available_host_channels;
#endif /* DEBUG_HOST_CHANNELS */
return ret_val;
}
/**
* Attempts to queue a single transaction request for a host channel
* associated with either a periodic or non-periodic transfer. This function
* assumes that there is space available in the appropriate request queue. For
* an OUT transfer or SETUP transaction in Slave mode, it checks whether space
* is available in the appropriate Tx FIFO.
*
* @param hcd The HCD state structure.
* @param hc Host channel descriptor associated with either a periodic or
* non-periodic transfer.
* @param fifo_dwords_avail Number of DWORDs available in the periodic Tx
* FIFO for periodic transfers or the non-periodic Tx FIFO for non-periodic
* transfers.
*
* @return 1 if a request is queued and more requests may be needed to
* complete the transfer, 0 if no more requests are required for this
* transfer, -1 if there is insufficient space in the Tx FIFO.
*/
static int queue_transaction(dwc_otg_hcd_t * hcd,
dwc_hc_t * hc, uint16_t fifo_dwords_avail)
{
int retval;
if (hcd->core_if->dma_enable) {
if (hcd->core_if->dma_desc_enable) {
if (!hc->xfer_started
|| (hc->ep_type == DWC_OTG_EP_TYPE_ISOC)) {
dwc_otg_hcd_start_xfer_ddma(hcd, hc->qh);
hc->qh->ping_state = 0;
}
} else if (!hc->xfer_started) {
if (fiq_fsm_enable && hc->error_state) {
hcd->fiq_state->channel[hc->hc_num].nr_errors =
DWC_CIRCLEQ_FIRST(&hc->qh->qtd_list)->error_count;
hcd->fiq_state->channel[hc->hc_num].fsm =
FIQ_PASSTHROUGH_ERRORSTATE;
}
dwc_otg_hc_start_transfer(hcd->core_if, hc);
hc->qh->ping_state = 0;
}
retval = 0;
} else if (hc->halt_pending) {
/* Don't queue a request if the channel has been halted. */
retval = 0;
} else if (hc->halt_on_queue) {
dwc_otg_hc_halt(hcd->core_if, hc, hc->halt_status);
retval = 0;
} else if (hc->do_ping) {
if (!hc->xfer_started) {
dwc_otg_hc_start_transfer(hcd->core_if, hc);
}
retval = 0;
} else if (!hc->ep_is_in || hc->data_pid_start == DWC_OTG_HC_PID_SETUP) {
if ((fifo_dwords_avail * 4) >= hc->max_packet) {
if (!hc->xfer_started) {
dwc_otg_hc_start_transfer(hcd->core_if, hc);
retval = 1;
} else {
retval =
dwc_otg_hc_continue_transfer(hcd->core_if,
hc);
}
} else {
retval = -1;
}
} else {
if (!hc->xfer_started) {
dwc_otg_hc_start_transfer(hcd->core_if, hc);
retval = 1;
} else {
retval = dwc_otg_hc_continue_transfer(hcd->core_if, hc);
}
}
return retval;
}
/**
* Processes periodic channels for the next frame and queues transactions for
* these channels to the DWC_otg controller. After queueing transactions, the
* Periodic Tx FIFO Empty interrupt is enabled if there are more transactions
* to queue as Periodic Tx FIFO or request queue space becomes available.
* Otherwise, the Periodic Tx FIFO Empty interrupt is disabled.
*/
static void process_periodic_channels(dwc_otg_hcd_t * hcd)
{
hptxsts_data_t tx_status;
dwc_list_link_t *qh_ptr;
dwc_otg_qh_t *qh;
int status = 0;
int no_queue_space = 0;
int no_fifo_space = 0;
dwc_otg_host_global_regs_t *host_regs;
host_regs = hcd->core_if->host_if->host_global_regs;
DWC_DEBUGPL(DBG_HCDV, "Queue periodic transactions\n");
#ifdef DEBUG
tx_status.d32 = DWC_READ_REG32(&host_regs->hptxsts);
DWC_DEBUGPL(DBG_HCDV,
" P Tx Req Queue Space Avail (before queue): %d\n",
tx_status.b.ptxqspcavail);
DWC_DEBUGPL(DBG_HCDV, " P Tx FIFO Space Avail (before queue): %d\n",
tx_status.b.ptxfspcavail);
#endif
qh_ptr = hcd->periodic_sched_assigned.next;
while (qh_ptr != &hcd->periodic_sched_assigned) {
tx_status.d32 = DWC_READ_REG32(&host_regs->hptxsts);
if (tx_status.b.ptxqspcavail == 0) {
no_queue_space = 1;
break;
}
qh = DWC_LIST_ENTRY(qh_ptr, dwc_otg_qh_t, qh_list_entry);
// Do not send a split start transaction any later than frame .6
// Note, we have to schedule a periodic in .5 to make it go in .6
if(fiq_fsm_enable && qh->do_split && ((dwc_otg_hcd_get_frame_number(hcd) + 1) & 7) > 6)
{
qh_ptr = qh_ptr->next;
hcd->fiq_state->next_sched_frame = dwc_otg_hcd_get_frame_number(hcd) | 7;
continue;
}
if (fiq_fsm_enable && fiq_fsm_transaction_suitable(hcd, qh)) {
if (qh->do_split)
fiq_fsm_queue_split_transaction(hcd, qh);
else
fiq_fsm_queue_isoc_transaction(hcd, qh);
} else {
/*
* Set a flag if we're queueing high-bandwidth in slave mode.
* The flag prevents any halts to get into the request queue in
* the middle of multiple high-bandwidth packets getting queued.
*/
if (!hcd->core_if->dma_enable && qh->channel->multi_count > 1) {
hcd->core_if->queuing_high_bandwidth = 1;
}
status = queue_transaction(hcd, qh->channel,
tx_status.b.ptxfspcavail);
if (status < 0) {
no_fifo_space = 1;
break;
}
}
/*
* In Slave mode, stay on the current transfer until there is
* nothing more to do or the high-bandwidth request count is
* reached. In DMA mode, only need to queue one request. The
* controller automatically handles multiple packets for
* high-bandwidth transfers.
*/
if (hcd->core_if->dma_enable || status == 0 ||
qh->channel->requests == qh->channel->multi_count) {
qh_ptr = qh_ptr->next;
/*
* Move the QH from the periodic assigned schedule to
* the periodic queued schedule.
*/
DWC_LIST_MOVE_HEAD(&hcd->periodic_sched_queued,
&qh->qh_list_entry);
/* done queuing high bandwidth */
hcd->core_if->queuing_high_bandwidth = 0;
}
}
if (!hcd->core_if->dma_enable) {
dwc_otg_core_global_regs_t *global_regs;
gintmsk_data_t intr_mask = {.d32 = 0 };
global_regs = hcd->core_if->core_global_regs;
intr_mask.b.ptxfempty = 1;
#ifdef DEBUG
tx_status.d32 = DWC_READ_REG32(&host_regs->hptxsts);
DWC_DEBUGPL(DBG_HCDV,
" P Tx Req Queue Space Avail (after queue): %d\n",
tx_status.b.ptxqspcavail);
DWC_DEBUGPL(DBG_HCDV,
" P Tx FIFO Space Avail (after queue): %d\n",
tx_status.b.ptxfspcavail);
#endif
if (!DWC_LIST_EMPTY(&hcd->periodic_sched_assigned) ||
no_queue_space || no_fifo_space) {
/*
* May need to queue more transactions as the request
* queue or Tx FIFO empties. Enable the periodic Tx
* FIFO empty interrupt. (Always use the half-empty
* level to ensure that new requests are loaded as
* soon as possible.)
*/
DWC_MODIFY_REG32(&global_regs->gintmsk, 0,
intr_mask.d32);
} else {
/*
* Disable the Tx FIFO empty interrupt since there are
* no more transactions that need to be queued right
* now. This function is called from interrupt
* handlers to queue more transactions as transfer
* states change.
*/
DWC_MODIFY_REG32(&global_regs->gintmsk, intr_mask.d32,
0);
}
}
}
/**
* Processes active non-periodic channels and queues transactions for these
* channels to the DWC_otg controller. After queueing transactions, the NP Tx
* FIFO Empty interrupt is enabled if there are more transactions to queue as
* NP Tx FIFO or request queue space becomes available. Otherwise, the NP Tx
* FIFO Empty interrupt is disabled.
*/
static void process_non_periodic_channels(dwc_otg_hcd_t * hcd)
{
gnptxsts_data_t tx_status;
dwc_list_link_t *orig_qh_ptr;
dwc_otg_qh_t *qh;
int status;
int no_queue_space = 0;
int no_fifo_space = 0;
int more_to_do = 0;
dwc_otg_core_global_regs_t *global_regs =
hcd->core_if->core_global_regs;
DWC_DEBUGPL(DBG_HCDV, "Queue non-periodic transactions\n");
#ifdef DEBUG
tx_status.d32 = DWC_READ_REG32(&global_regs->gnptxsts);
DWC_DEBUGPL(DBG_HCDV,
" NP Tx Req Queue Space Avail (before queue): %d\n",
tx_status.b.nptxqspcavail);
DWC_DEBUGPL(DBG_HCDV, " NP Tx FIFO Space Avail (before queue): %d\n",
tx_status.b.nptxfspcavail);
#endif
/*
* Keep track of the starting point. Skip over the start-of-list
* entry.
*/
if (hcd->non_periodic_qh_ptr == &hcd->non_periodic_sched_active) {
hcd->non_periodic_qh_ptr = hcd->non_periodic_qh_ptr->next;
}
orig_qh_ptr = hcd->non_periodic_qh_ptr;
/*
* Process once through the active list or until no more space is
* available in the request queue or the Tx FIFO.
*/
do {
tx_status.d32 = DWC_READ_REG32(&global_regs->gnptxsts);
if (!hcd->core_if->dma_enable && tx_status.b.nptxqspcavail == 0) {
no_queue_space = 1;
break;
}
qh = DWC_LIST_ENTRY(hcd->non_periodic_qh_ptr, dwc_otg_qh_t,
qh_list_entry);
if(fiq_fsm_enable && fiq_fsm_transaction_suitable(hcd, qh)) {
fiq_fsm_queue_split_transaction(hcd, qh);
} else {
status = queue_transaction(hcd, qh->channel,
tx_status.b.nptxfspcavail);
if (status > 0) {
more_to_do = 1;
} else if (status < 0) {
no_fifo_space = 1;
break;
}
}
/* Advance to next QH, skipping start-of-list entry. */
hcd->non_periodic_qh_ptr = hcd->non_periodic_qh_ptr->next;
if (hcd->non_periodic_qh_ptr == &hcd->non_periodic_sched_active) {
hcd->non_periodic_qh_ptr =
hcd->non_periodic_qh_ptr->next;
}
} while (hcd->non_periodic_qh_ptr != orig_qh_ptr);
if (!hcd->core_if->dma_enable) {
gintmsk_data_t intr_mask = {.d32 = 0 };
intr_mask.b.nptxfempty = 1;
#ifdef DEBUG
tx_status.d32 = DWC_READ_REG32(&global_regs->gnptxsts);
DWC_DEBUGPL(DBG_HCDV,
" NP Tx Req Queue Space Avail (after queue): %d\n",
tx_status.b.nptxqspcavail);
DWC_DEBUGPL(DBG_HCDV,
" NP Tx FIFO Space Avail (after queue): %d\n",
tx_status.b.nptxfspcavail);
#endif
if (more_to_do || no_queue_space || no_fifo_space) {
/*
* May need to queue more transactions as the request
* queue or Tx FIFO empties. Enable the non-periodic
* Tx FIFO empty interrupt. (Always use the half-empty
* level to ensure that new requests are loaded as
* soon as possible.)
*/
DWC_MODIFY_REG32(&global_regs->gintmsk, 0,
intr_mask.d32);
} else {
/*
* Disable the Tx FIFO empty interrupt since there are
* no more transactions that need to be queued right
* now. This function is called from interrupt
* handlers to queue more transactions as transfer
* states change.
*/
DWC_MODIFY_REG32(&global_regs->gintmsk, intr_mask.d32,
0);
}
}
}
/**
* This function processes the currently active host channels and queues
* transactions for these channels to the DWC_otg controller. It is called
* from HCD interrupt handler functions.
*
* @param hcd The HCD state structure.
* @param tr_type The type(s) of transactions to queue (non-periodic,
* periodic, or both).
*/
void dwc_otg_hcd_queue_transactions(dwc_otg_hcd_t * hcd,
dwc_otg_transaction_type_e tr_type)
{
#ifdef DEBUG_SOF
DWC_DEBUGPL(DBG_HCD, "Queue Transactions\n");
#endif
/* Process host channels associated with periodic transfers. */
if ((tr_type == DWC_OTG_TRANSACTION_PERIODIC ||
tr_type == DWC_OTG_TRANSACTION_ALL) &&
!DWC_LIST_EMPTY(&hcd->periodic_sched_assigned)) {
process_periodic_channels(hcd);
}
/* Process host channels associated with non-periodic transfers. */
if (tr_type == DWC_OTG_TRANSACTION_NON_PERIODIC ||
tr_type == DWC_OTG_TRANSACTION_ALL) {
if (!DWC_LIST_EMPTY(&hcd->non_periodic_sched_active)) {
process_non_periodic_channels(hcd);
} else {
/*
* Ensure NP Tx FIFO empty interrupt is disabled when
* there are no non-periodic transfers to process.
*/
gintmsk_data_t gintmsk = {.d32 = 0 };
gintmsk.b.nptxfempty = 1;
if (fiq_enable) {
local_fiq_disable();
fiq_fsm_spin_lock(&hcd->fiq_state->lock);
DWC_MODIFY_REG32(&hcd->core_if->core_global_regs->gintmsk, gintmsk.d32, 0);
fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
local_fiq_enable();
} else {
DWC_MODIFY_REG32(&hcd->core_if->core_global_regs->gintmsk, gintmsk.d32, 0);
}
}
}
}
#ifdef DWC_HS_ELECT_TST
/*
* Quick and dirty hack to implement the HS Electrical Test
* SINGLE_STEP_GET_DEVICE_DESCRIPTOR feature.
*
* This code was copied from our userspace app "hset". It sends a
* Get Device Descriptor control sequence in two parts, first the
* Setup packet by itself, followed some time later by the In and
* Ack packets. Rather than trying to figure out how to add this
* functionality to the normal driver code, we just hijack the
* hardware, using these two function to drive the hardware
* directly.
*/
static dwc_otg_core_global_regs_t *global_regs;
static dwc_otg_host_global_regs_t *hc_global_regs;
static dwc_otg_hc_regs_t *hc_regs;
static uint32_t *data_fifo;
static void do_setup(void)
{
gintsts_data_t gintsts;
hctsiz_data_t hctsiz;
hcchar_data_t hcchar;
haint_data_t haint;
hcint_data_t hcint;
/* Enable HAINTs */
DWC_WRITE_REG32(&hc_global_regs->haintmsk, 0x0001);
/* Enable HCINTs */
DWC_WRITE_REG32(&hc_regs->hcintmsk, 0x04a3);
/* Read GINTSTS */
gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
/* Read HAINT */
haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
/* Read HCINT */
hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
/* Read HCCHAR */
hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
/* Clear HCINT */
DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
/* Clear HAINT */
DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
/* Clear GINTSTS */
DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
/* Read GINTSTS */
gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
/*
* Send Setup packet (Get Device Descriptor)
*/
/* Make sure channel is disabled */
hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
if (hcchar.b.chen) {
hcchar.b.chdis = 1;
// hcchar.b.chen = 1;
DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
//sleep(1);
dwc_mdelay(1000);
/* Read GINTSTS */
gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
/* Read HAINT */
haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
/* Read HCINT */
hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
/* Read HCCHAR */
hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
/* Clear HCINT */
DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
/* Clear HAINT */
DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
/* Clear GINTSTS */
DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
}
/* Set HCTSIZ */
hctsiz.d32 = 0;
hctsiz.b.xfersize = 8;
hctsiz.b.pktcnt = 1;
hctsiz.b.pid = DWC_OTG_HC_PID_SETUP;
DWC_WRITE_REG32(&hc_regs->hctsiz, hctsiz.d32);
/* Set HCCHAR */
hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL;
hcchar.b.epdir = 0;
hcchar.b.epnum = 0;
hcchar.b.mps = 8;
hcchar.b.chen = 1;
DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
/* Fill FIFO with Setup data for Get Device Descriptor */
data_fifo = (uint32_t *) ((char *)global_regs + 0x1000);
DWC_WRITE_REG32(data_fifo++, 0x01000680);
DWC_WRITE_REG32(data_fifo++, 0x00080000);
gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
/* Wait for host channel interrupt */
do {
gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
} while (gintsts.b.hcintr == 0);
/* Disable HCINTs */
DWC_WRITE_REG32(&hc_regs->hcintmsk, 0x0000);
/* Disable HAINTs */
DWC_WRITE_REG32(&hc_global_regs->haintmsk, 0x0000);
/* Read HAINT */
haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
/* Read HCINT */
hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
/* Read HCCHAR */
hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
/* Clear HCINT */
DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
/* Clear HAINT */
DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
/* Clear GINTSTS */
DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
/* Read GINTSTS */
gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
}
static void do_in_ack(void)
{
gintsts_data_t gintsts;
hctsiz_data_t hctsiz;
hcchar_data_t hcchar;
haint_data_t haint;
hcint_data_t hcint;
host_grxsts_data_t grxsts;
/* Enable HAINTs */
DWC_WRITE_REG32(&hc_global_regs->haintmsk, 0x0001);
/* Enable HCINTs */
DWC_WRITE_REG32(&hc_regs->hcintmsk, 0x04a3);
/* Read GINTSTS */
gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
/* Read HAINT */
haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
/* Read HCINT */
hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
/* Read HCCHAR */
hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
/* Clear HCINT */
DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
/* Clear HAINT */
DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
/* Clear GINTSTS */
DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
/* Read GINTSTS */
gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
/*
* Receive Control In packet
*/
/* Make sure channel is disabled */
hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
if (hcchar.b.chen) {
hcchar.b.chdis = 1;
hcchar.b.chen = 1;
DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
//sleep(1);
dwc_mdelay(1000);
/* Read GINTSTS */
gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
/* Read HAINT */
haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
/* Read HCINT */
hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
/* Read HCCHAR */
hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
/* Clear HCINT */
DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
/* Clear HAINT */
DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
/* Clear GINTSTS */
DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
}
/* Set HCTSIZ */
hctsiz.d32 = 0;
hctsiz.b.xfersize = 8;
hctsiz.b.pktcnt = 1;
hctsiz.b.pid = DWC_OTG_HC_PID_DATA1;
DWC_WRITE_REG32(&hc_regs->hctsiz, hctsiz.d32);
/* Set HCCHAR */
hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL;
hcchar.b.epdir = 1;
hcchar.b.epnum = 0;
hcchar.b.mps = 8;
hcchar.b.chen = 1;
DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
/* Wait for receive status queue interrupt */
do {
gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
} while (gintsts.b.rxstsqlvl == 0);
/* Read RXSTS */
grxsts.d32 = DWC_READ_REG32(&global_regs->grxstsp);
/* Clear RXSTSQLVL in GINTSTS */
gintsts.d32 = 0;
gintsts.b.rxstsqlvl = 1;
DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
switch (grxsts.b.pktsts) {
case DWC_GRXSTS_PKTSTS_IN:
/* Read the data into the host buffer */
if (grxsts.b.bcnt > 0) {
int i;
int word_count = (grxsts.b.bcnt + 3) / 4;
data_fifo = (uint32_t *) ((char *)global_regs + 0x1000);
for (i = 0; i < word_count; i++) {
(void)DWC_READ_REG32(data_fifo++);
}
}
break;
default:
break;
}
gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
/* Wait for receive status queue interrupt */
do {
gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
} while (gintsts.b.rxstsqlvl == 0);
/* Read RXSTS */
grxsts.d32 = DWC_READ_REG32(&global_regs->grxstsp);
/* Clear RXSTSQLVL in GINTSTS */
gintsts.d32 = 0;
gintsts.b.rxstsqlvl = 1;
DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
switch (grxsts.b.pktsts) {
case DWC_GRXSTS_PKTSTS_IN_XFER_COMP:
break;
default:
break;
}
gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
/* Wait for host channel interrupt */
do {
gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
} while (gintsts.b.hcintr == 0);
/* Read HAINT */
haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
/* Read HCINT */
hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
/* Read HCCHAR */
hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
/* Clear HCINT */
DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
/* Clear HAINT */
DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
/* Clear GINTSTS */
DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
/* Read GINTSTS */
gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
// usleep(100000);
// mdelay(100);
dwc_mdelay(1);
/*
* Send handshake packet
*/
/* Read HAINT */
haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
/* Read HCINT */
hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
/* Read HCCHAR */
hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
/* Clear HCINT */
DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
/* Clear HAINT */
DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
/* Clear GINTSTS */
DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
/* Read GINTSTS */
gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
/* Make sure channel is disabled */
hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
if (hcchar.b.chen) {
hcchar.b.chdis = 1;
hcchar.b.chen = 1;
DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
//sleep(1);
dwc_mdelay(1000);
/* Read GINTSTS */
gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
/* Read HAINT */
haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
/* Read HCINT */
hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
/* Read HCCHAR */
hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
/* Clear HCINT */
DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
/* Clear HAINT */
DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
/* Clear GINTSTS */
DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
}
/* Set HCTSIZ */
hctsiz.d32 = 0;
hctsiz.b.xfersize = 0;
hctsiz.b.pktcnt = 1;
hctsiz.b.pid = DWC_OTG_HC_PID_DATA1;
DWC_WRITE_REG32(&hc_regs->hctsiz, hctsiz.d32);
/* Set HCCHAR */
hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL;
hcchar.b.epdir = 0;
hcchar.b.epnum = 0;
hcchar.b.mps = 8;
hcchar.b.chen = 1;
DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
/* Wait for host channel interrupt */
do {
gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
} while (gintsts.b.hcintr == 0);
/* Disable HCINTs */
DWC_WRITE_REG32(&hc_regs->hcintmsk, 0x0000);
/* Disable HAINTs */
DWC_WRITE_REG32(&hc_global_regs->haintmsk, 0x0000);
/* Read HAINT */
haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
/* Read HCINT */
hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
/* Read HCCHAR */
hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
/* Clear HCINT */
DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
/* Clear HAINT */
DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
/* Clear GINTSTS */
DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
/* Read GINTSTS */
gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
}
#endif
/** Handles hub class-specific requests. */
int dwc_otg_hcd_hub_control(dwc_otg_hcd_t * dwc_otg_hcd,
uint16_t typeReq,
uint16_t wValue,
uint16_t wIndex, uint8_t * buf, uint16_t wLength)
{
int retval = 0;
dwc_otg_core_if_t *core_if = dwc_otg_hcd->core_if;
usb_hub_descriptor_t *hub_desc;
hprt0_data_t hprt0 = {.d32 = 0 };
uint32_t port_status;
switch (typeReq) {
case UCR_CLEAR_HUB_FEATURE:
DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
"ClearHubFeature 0x%x\n", wValue);
switch (wValue) {
case UHF_C_HUB_LOCAL_POWER:
case UHF_C_HUB_OVER_CURRENT:
/* Nothing required here */
break;
default:
retval = -DWC_E_INVALID;
DWC_ERROR("DWC OTG HCD - "
"ClearHubFeature request %xh unknown\n",
wValue);
}
break;
case UCR_CLEAR_PORT_FEATURE:
#ifdef CONFIG_USB_DWC_OTG_LPM
if (wValue != UHF_PORT_L1)
#endif
if (!wIndex || wIndex > 1)
goto error;
switch (wValue) {
case UHF_PORT_ENABLE:
DWC_DEBUGPL(DBG_ANY, "DWC OTG HCD HUB CONTROL - "
"ClearPortFeature USB_PORT_FEAT_ENABLE\n");
hprt0.d32 = dwc_otg_read_hprt0(core_if);
hprt0.b.prtena = 1;
DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
break;
case UHF_PORT_SUSPEND:
DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
"ClearPortFeature USB_PORT_FEAT_SUSPEND\n");
if (core_if->power_down == 2) {
dwc_otg_host_hibernation_restore(core_if, 0, 0);
} else {
DWC_WRITE_REG32(core_if->pcgcctl, 0);
dwc_mdelay(5);
hprt0.d32 = dwc_otg_read_hprt0(core_if);
hprt0.b.prtres = 1;
DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
hprt0.b.prtsusp = 0;
/* Clear Resume bit */
dwc_mdelay(100);
hprt0.b.prtres = 0;
DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
}
break;
#ifdef CONFIG_USB_DWC_OTG_LPM
case UHF_PORT_L1:
{
pcgcctl_data_t pcgcctl = {.d32 = 0 };
glpmcfg_data_t lpmcfg = {.d32 = 0 };
lpmcfg.d32 =
DWC_READ_REG32(&core_if->
core_global_regs->glpmcfg);
lpmcfg.b.en_utmi_sleep = 0;
lpmcfg.b.hird_thres &= (~(1 << 4));
lpmcfg.b.prt_sleep_sts = 1;
DWC_WRITE_REG32(&core_if->
core_global_regs->glpmcfg,
lpmcfg.d32);
/* Clear Enbl_L1Gating bit. */
pcgcctl.b.enbl_sleep_gating = 1;
DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32,
0);
dwc_mdelay(5);
hprt0.d32 = dwc_otg_read_hprt0(core_if);
hprt0.b.prtres = 1;
DWC_WRITE_REG32(core_if->host_if->hprt0,
hprt0.d32);
/* This bit will be cleared in wakeup interrupt handle */
break;
}
#endif
case UHF_PORT_POWER:
DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
"ClearPortFeature USB_PORT_FEAT_POWER\n");
hprt0.d32 = dwc_otg_read_hprt0(core_if);
hprt0.b.prtpwr = 0;
DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
break;
case UHF_PORT_INDICATOR:
DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
"ClearPortFeature USB_PORT_FEAT_INDICATOR\n");
/* Port inidicator not supported */
break;
case UHF_C_PORT_CONNECTION:
/* Clears drivers internal connect status change
* flag */
DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
"ClearPortFeature USB_PORT_FEAT_C_CONNECTION\n");
dwc_otg_hcd->flags.b.port_connect_status_change = 0;
break;
case UHF_C_PORT_RESET:
/* Clears the driver's internal Port Reset Change
* flag */
DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
"ClearPortFeature USB_PORT_FEAT_C_RESET\n");
dwc_otg_hcd->flags.b.port_reset_change = 0;
break;
case UHF_C_PORT_ENABLE:
/* Clears the driver's internal Port
* Enable/Disable Change flag */
DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
"ClearPortFeature USB_PORT_FEAT_C_ENABLE\n");
dwc_otg_hcd->flags.b.port_enable_change = 0;
break;
case UHF_C_PORT_SUSPEND:
/* Clears the driver's internal Port Suspend
* Change flag, which is set when resume signaling on
* the host port is complete */
DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
"ClearPortFeature USB_PORT_FEAT_C_SUSPEND\n");
dwc_otg_hcd->flags.b.port_suspend_change = 0;
break;
#ifdef CONFIG_USB_DWC_OTG_LPM
case UHF_C_PORT_L1:
dwc_otg_hcd->flags.b.port_l1_change = 0;
break;
#endif
case UHF_C_PORT_OVER_CURRENT:
DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
"ClearPortFeature USB_PORT_FEAT_C_OVER_CURRENT\n");
dwc_otg_hcd->flags.b.port_over_current_change = 0;
break;
default:
retval = -DWC_E_INVALID;
DWC_ERROR("DWC OTG HCD - "
"ClearPortFeature request %xh "
"unknown or unsupported\n", wValue);
}
break;
case UCR_GET_HUB_DESCRIPTOR:
DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
"GetHubDescriptor\n");
hub_desc = (usb_hub_descriptor_t *) buf;
hub_desc->bDescLength = 9;
hub_desc->bDescriptorType = 0x29;
hub_desc->bNbrPorts = 1;
USETW(hub_desc->wHubCharacteristics, 0x08);
hub_desc->bPwrOn2PwrGood = 1;
hub_desc->bHubContrCurrent = 0;
hub_desc->DeviceRemovable[0] = 0;
hub_desc->DeviceRemovable[1] = 0xff;
break;
case UCR_GET_HUB_STATUS:
DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
"GetHubStatus\n");
DWC_MEMSET(buf, 0, 4);
break;
case UCR_GET_PORT_STATUS:
DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
"GetPortStatus wIndex = 0x%04x FLAGS=0x%08x\n",
wIndex, dwc_otg_hcd->flags.d32);
if (!wIndex || wIndex > 1)
goto error;
port_status = 0;
if (dwc_otg_hcd->flags.b.port_connect_status_change)
port_status |= (1 << UHF_C_PORT_CONNECTION);
if (dwc_otg_hcd->flags.b.port_enable_change)
port_status |= (1 << UHF_C_PORT_ENABLE);
if (dwc_otg_hcd->flags.b.port_suspend_change)
port_status |= (1 << UHF_C_PORT_SUSPEND);
if (dwc_otg_hcd->flags.b.port_l1_change)
port_status |= (1 << UHF_C_PORT_L1);
if (dwc_otg_hcd->flags.b.port_reset_change) {
port_status |= (1 << UHF_C_PORT_RESET);
}
if (dwc_otg_hcd->flags.b.port_over_current_change) {
DWC_WARN("Overcurrent change detected\n");
port_status |= (1 << UHF_C_PORT_OVER_CURRENT);
}
if (!dwc_otg_hcd->flags.b.port_connect_status) {
/*
* The port is disconnected, which means the core is
* either in device mode or it soon will be. Just
* return 0's for the remainder of the port status
* since the port register can't be read if the core
* is in device mode.
*/
*((__le32 *) buf) = dwc_cpu_to_le32(&port_status);
break;
}
hprt0.d32 = DWC_READ_REG32(core_if->host_if->hprt0);
DWC_DEBUGPL(DBG_HCDV, " HPRT0: 0x%08x\n", hprt0.d32);
if (hprt0.b.prtconnsts)
port_status |= (1 << UHF_PORT_CONNECTION);
if (hprt0.b.prtena)
port_status |= (1 << UHF_PORT_ENABLE);
if (hprt0.b.prtsusp)
port_status |= (1 << UHF_PORT_SUSPEND);
if (hprt0.b.prtovrcurract)
port_status |= (1 << UHF_PORT_OVER_CURRENT);
if (hprt0.b.prtrst)
port_status |= (1 << UHF_PORT_RESET);
if (hprt0.b.prtpwr)
port_status |= (1 << UHF_PORT_POWER);
if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_HIGH_SPEED)
port_status |= (1 << UHF_PORT_HIGH_SPEED);
else if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_LOW_SPEED)
port_status |= (1 << UHF_PORT_LOW_SPEED);
if (hprt0.b.prttstctl)
port_status |= (1 << UHF_PORT_TEST);
if (dwc_otg_get_lpm_portsleepstatus(dwc_otg_hcd->core_if)) {
port_status |= (1 << UHF_PORT_L1);
}
/*
For Synopsys HW emulation of Power down wkup_control asserts the
hreset_n and prst_n on suspned. This causes the HPRT0 to be zero.
We intentionally tell the software that port is in L2Suspend state.
Only for STE.
*/
if ((core_if->power_down == 2)
&& (core_if->hibernation_suspend == 1)) {
port_status |= (1 << UHF_PORT_SUSPEND);
}
/* USB_PORT_FEAT_INDICATOR unsupported always 0 */
*((__le32 *) buf) = dwc_cpu_to_le32(&port_status);
break;
case UCR_SET_HUB_FEATURE:
DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
"SetHubFeature\n");
/* No HUB features supported */
break;
case UCR_SET_PORT_FEATURE:
if (wValue != UHF_PORT_TEST && (!wIndex || wIndex > 1))
goto error;
if (!dwc_otg_hcd->flags.b.port_connect_status) {
/*
* The port is disconnected, which means the core is
* either in device mode or it soon will be. Just
* return without doing anything since the port
* register can't be written if the core is in device
* mode.
*/
break;
}
switch (wValue) {
case UHF_PORT_SUSPEND:
DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
"SetPortFeature - USB_PORT_FEAT_SUSPEND\n");
if (dwc_otg_hcd_otg_port(dwc_otg_hcd) != wIndex) {
goto error;
}
if (core_if->power_down == 2) {
int timeout = 300;
dwc_irqflags_t flags;
pcgcctl_data_t pcgcctl = {.d32 = 0 };
gpwrdn_data_t gpwrdn = {.d32 = 0 };
gusbcfg_data_t gusbcfg = {.d32 = 0 };
#ifdef DWC_DEV_SRPCAP
int32_t otg_cap_param = core_if->core_params->otg_cap;
#endif
DWC_PRINTF("Preparing for complete power-off\n");
/* Save registers before hibernation */
dwc_otg_save_global_regs(core_if);
dwc_otg_save_host_regs(core_if);
hprt0.d32 = dwc_otg_read_hprt0(core_if);
hprt0.b.prtsusp = 1;
hprt0.b.prtena = 0;
DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
/* Spin hprt0.b.prtsusp to became 1 */
do {
hprt0.d32 = dwc_otg_read_hprt0(core_if);
if (hprt0.b.prtsusp) {
break;
}
dwc_mdelay(1);
} while (--timeout);
if (!timeout) {
DWC_WARN("Suspend wasn't genereted\n");
}
dwc_udelay(10);
/*
* We need to disable interrupts to prevent servicing of any IRQ
* during going to hibernation
*/
DWC_SPINLOCK_IRQSAVE(dwc_otg_hcd->lock, &flags);
core_if->lx_state = DWC_OTG_L2;
#ifdef DWC_DEV_SRPCAP
hprt0.d32 = dwc_otg_read_hprt0(core_if);
hprt0.b.prtpwr = 0;
hprt0.b.prtena = 0;
DWC_WRITE_REG32(core_if->host_if->hprt0,
hprt0.d32);
#endif
gusbcfg.d32 =
DWC_READ_REG32(&core_if->core_global_regs->
gusbcfg);
if (gusbcfg.b.ulpi_utmi_sel == 1) {
/* ULPI interface */
/* Suspend the Phy Clock */
pcgcctl.d32 = 0;
pcgcctl.b.stoppclk = 1;
DWC_MODIFY_REG32(core_if->pcgcctl, 0,
pcgcctl.d32);
dwc_udelay(10);
gpwrdn.b.pmuactv = 1;
DWC_MODIFY_REG32(&core_if->
core_global_regs->
gpwrdn, 0, gpwrdn.d32);
} else {
/* UTMI+ Interface */
gpwrdn.b.pmuactv = 1;
DWC_MODIFY_REG32(&core_if->
core_global_regs->
gpwrdn, 0, gpwrdn.d32);
dwc_udelay(10);
pcgcctl.b.stoppclk = 1;
DWC_MODIFY_REG32(core_if->pcgcctl, 0, pcgcctl.d32);
dwc_udelay(10);
}
#ifdef DWC_DEV_SRPCAP
gpwrdn.d32 = 0;
gpwrdn.b.dis_vbus = 1;
DWC_MODIFY_REG32(&core_if->core_global_regs->
gpwrdn, 0, gpwrdn.d32);
#endif
gpwrdn.d32 = 0;
gpwrdn.b.pmuintsel = 1;
DWC_MODIFY_REG32(&core_if->core_global_regs->
gpwrdn, 0, gpwrdn.d32);
dwc_udelay(10);
gpwrdn.d32 = 0;
#ifdef DWC_DEV_SRPCAP
gpwrdn.b.srp_det_msk = 1;
#endif
gpwrdn.b.disconn_det_msk = 1;
gpwrdn.b.lnstchng_msk = 1;
gpwrdn.b.sts_chngint_msk = 1;
DWC_MODIFY_REG32(&core_if->core_global_regs->
gpwrdn, 0, gpwrdn.d32);
dwc_udelay(10);
/* Enable Power Down Clamp and all interrupts in GPWRDN */
gpwrdn.d32 = 0;
gpwrdn.b.pwrdnclmp = 1;
DWC_MODIFY_REG32(&core_if->core_global_regs->
gpwrdn, 0, gpwrdn.d32);
dwc_udelay(10);
/* Switch off VDD */
gpwrdn.d32 = 0;
gpwrdn.b.pwrdnswtch = 1;
DWC_MODIFY_REG32(&core_if->core_global_regs->
gpwrdn, 0, gpwrdn.d32);
#ifdef DWC_DEV_SRPCAP
if (otg_cap_param == DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE)
{
core_if->pwron_timer_started = 1;
DWC_TIMER_SCHEDULE(core_if->pwron_timer, 6000 /* 6 secs */ );
}
#endif
/* Save gpwrdn register for further usage if stschng interrupt */
core_if->gr_backup->gpwrdn_local =
DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
/* Set flag to indicate that we are in hibernation */
core_if->hibernation_suspend = 1;
DWC_SPINUNLOCK_IRQRESTORE(dwc_otg_hcd->lock,flags);
DWC_PRINTF("Host hibernation completed\n");
// Exit from case statement
break;
}
if (dwc_otg_hcd_otg_port(dwc_otg_hcd) == wIndex &&
dwc_otg_hcd->fops->get_b_hnp_enable(dwc_otg_hcd)) {
gotgctl_data_t gotgctl = {.d32 = 0 };
gotgctl.b.hstsethnpen = 1;
DWC_MODIFY_REG32(&core_if->core_global_regs->
gotgctl, 0, gotgctl.d32);
core_if->op_state = A_SUSPEND;
}
hprt0.d32 = dwc_otg_read_hprt0(core_if);
hprt0.b.prtsusp = 1;
DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
{
dwc_irqflags_t flags;
/* Update lx_state */
DWC_SPINLOCK_IRQSAVE(dwc_otg_hcd->lock, &flags);
core_if->lx_state = DWC_OTG_L2;
DWC_SPINUNLOCK_IRQRESTORE(dwc_otg_hcd->lock, flags);
}
/* Suspend the Phy Clock */
{
pcgcctl_data_t pcgcctl = {.d32 = 0 };
pcgcctl.b.stoppclk = 1;
DWC_MODIFY_REG32(core_if->pcgcctl, 0,
pcgcctl.d32);
dwc_udelay(10);
}
/* For HNP the bus must be suspended for at least 200ms. */
if (dwc_otg_hcd->fops->get_b_hnp_enable(dwc_otg_hcd)) {
pcgcctl_data_t pcgcctl = {.d32 = 0 };
pcgcctl.b.stoppclk = 1;
DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
dwc_mdelay(200);
}
/** @todo - check how sw can wait for 1 sec to check asesvld??? */
#if 0 //vahrama !!!!!!!!!!!!!!!!!!
if (core_if->adp_enable) {
gotgctl_data_t gotgctl = {.d32 = 0 };
gpwrdn_data_t gpwrdn;
while (gotgctl.b.asesvld == 1) {
gotgctl.d32 =
DWC_READ_REG32(&core_if->
core_global_regs->
gotgctl);
dwc_mdelay(100);
}
/* Enable Power Down Logic */
gpwrdn.d32 = 0;
gpwrdn.b.pmuactv = 1;
DWC_MODIFY_REG32(&core_if->core_global_regs->
gpwrdn, 0, gpwrdn.d32);
/* Unmask SRP detected interrupt from Power Down Logic */
gpwrdn.d32 = 0;
gpwrdn.b.srp_det_msk = 1;
DWC_MODIFY_REG32(&core_if->core_global_regs->
gpwrdn, 0, gpwrdn.d32);
dwc_otg_adp_probe_start(core_if);
}
#endif
break;
case UHF_PORT_POWER:
DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
"SetPortFeature - USB_PORT_FEAT_POWER\n");
hprt0.d32 = dwc_otg_read_hprt0(core_if);
hprt0.b.prtpwr = 1;
DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
break;
case UHF_PORT_RESET:
if ((core_if->power_down == 2)
&& (core_if->hibernation_suspend == 1)) {
/* If we are going to exit from Hibernated
* state via USB RESET.
*/
dwc_otg_host_hibernation_restore(core_if, 0, 1);
} else {
hprt0.d32 = dwc_otg_read_hprt0(core_if);
DWC_DEBUGPL(DBG_HCD,
"DWC OTG HCD HUB CONTROL - "
"SetPortFeature - USB_PORT_FEAT_RESET\n");
{
pcgcctl_data_t pcgcctl = {.d32 = 0 };
pcgcctl.b.enbl_sleep_gating = 1;
pcgcctl.b.stoppclk = 1;
DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
DWC_WRITE_REG32(core_if->pcgcctl, 0);
}
#ifdef CONFIG_USB_DWC_OTG_LPM
{
glpmcfg_data_t lpmcfg;
lpmcfg.d32 =
DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
if (lpmcfg.b.prt_sleep_sts) {
lpmcfg.b.en_utmi_sleep = 0;
lpmcfg.b.hird_thres &= (~(1 << 4));
DWC_WRITE_REG32
(&core_if->core_global_regs->glpmcfg,
lpmcfg.d32);
dwc_mdelay(1);
}
}
#endif
hprt0.d32 = dwc_otg_read_hprt0(core_if);
/* Clear suspend bit if resetting from suspended state. */
hprt0.b.prtsusp = 0;
/* When B-Host the Port reset bit is set in
* the Start HCD Callback function, so that
* the reset is started within 1ms of the HNP
* success interrupt. */
if (!dwc_otg_hcd_is_b_host(dwc_otg_hcd)) {
hprt0.b.prtpwr = 1;
hprt0.b.prtrst = 1;
DWC_PRINTF("Indeed it is in host mode hprt0 = %08x\n",hprt0.d32);
DWC_WRITE_REG32(core_if->host_if->hprt0,
hprt0.d32);
}
/* Clear reset bit in 10ms (FS/LS) or 50ms (HS) */
dwc_mdelay(60);
hprt0.b.prtrst = 0;
DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
core_if->lx_state = DWC_OTG_L0; /* Now back to the on state */
}
break;
#ifdef DWC_HS_ELECT_TST
case UHF_PORT_TEST:
{
uint32_t t;
gintmsk_data_t gintmsk;
t = (wIndex >> 8); /* MSB wIndex USB */
DWC_DEBUGPL(DBG_HCD,
"DWC OTG HCD HUB CONTROL - "
"SetPortFeature - USB_PORT_FEAT_TEST %d\n",
t);
DWC_WARN("USB_PORT_FEAT_TEST %d\n", t);
if (t < 6) {
hprt0.d32 = dwc_otg_read_hprt0(core_if);
hprt0.b.prttstctl = t;
DWC_WRITE_REG32(core_if->host_if->hprt0,
hprt0.d32);
} else {
/* Setup global vars with reg addresses (quick and
* dirty hack, should be cleaned up)
*/
global_regs = core_if->core_global_regs;
hc_global_regs =
core_if->host_if->host_global_regs;
hc_regs =
(dwc_otg_hc_regs_t *) ((char *)
global_regs +
0x500);
data_fifo =
(uint32_t *) ((char *)global_regs +
0x1000);
if (t == 6) { /* HS_HOST_PORT_SUSPEND_RESUME */
/* Save current interrupt mask */
gintmsk.d32 =
DWC_READ_REG32
(&global_regs->gintmsk);
/* Disable all interrupts while we muck with
* the hardware directly
*/
DWC_WRITE_REG32(&global_regs->gintmsk, 0);
/* 15 second delay per the test spec */
dwc_mdelay(15000);
/* Drive suspend on the root port */
hprt0.d32 =
dwc_otg_read_hprt0(core_if);
hprt0.b.prtsusp = 1;
hprt0.b.prtres = 0;
DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
/* 15 second delay per the test spec */
dwc_mdelay(15000);
/* Drive resume on the root port */
hprt0.d32 =
dwc_otg_read_hprt0(core_if);
hprt0.b.prtsusp = 0;
hprt0.b.prtres = 1;
DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
dwc_mdelay(100);
/* Clear the resume bit */
hprt0.b.prtres = 0;
DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
/* Restore interrupts */
DWC_WRITE_REG32(&global_regs->gintmsk, gintmsk.d32);
} else if (t == 7) { /* SINGLE_STEP_GET_DEVICE_DESCRIPTOR setup */
/* Save current interrupt mask */
gintmsk.d32 =
DWC_READ_REG32
(&global_regs->gintmsk);
/* Disable all interrupts while we muck with
* the hardware directly
*/
DWC_WRITE_REG32(&global_regs->gintmsk, 0);
/* 15 second delay per the test spec */
dwc_mdelay(15000);
/* Send the Setup packet */
do_setup();
/* 15 second delay so nothing else happens for awhile */
dwc_mdelay(15000);
/* Restore interrupts */
DWC_WRITE_REG32(&global_regs->gintmsk, gintmsk.d32);
} else if (t == 8) { /* SINGLE_STEP_GET_DEVICE_DESCRIPTOR execute */
/* Save current interrupt mask */
gintmsk.d32 =
DWC_READ_REG32
(&global_regs->gintmsk);
/* Disable all interrupts while we muck with
* the hardware directly
*/
DWC_WRITE_REG32(&global_regs->gintmsk, 0);
/* Send the Setup packet */
do_setup();
/* 15 second delay so nothing else happens for awhile */
dwc_mdelay(15000);
/* Send the In and Ack packets */
do_in_ack();
/* 15 second delay so nothing else happens for awhile */
dwc_mdelay(15000);
/* Restore interrupts */
DWC_WRITE_REG32(&global_regs->gintmsk, gintmsk.d32);
}
}
break;
}
#endif /* DWC_HS_ELECT_TST */
case UHF_PORT_INDICATOR:
DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
"SetPortFeature - USB_PORT_FEAT_INDICATOR\n");
/* Not supported */
break;
default:
retval = -DWC_E_INVALID;
DWC_ERROR("DWC OTG HCD - "
"SetPortFeature request %xh "
"unknown or unsupported\n", wValue);
break;
}
break;
#ifdef CONFIG_USB_DWC_OTG_LPM
case UCR_SET_AND_TEST_PORT_FEATURE:
if (wValue != UHF_PORT_L1) {
goto error;
}
{
int portnum, hird, devaddr, remwake;
glpmcfg_data_t lpmcfg;
uint32_t time_usecs;
gintsts_data_t gintsts;
gintmsk_data_t gintmsk;
if (!dwc_otg_get_param_lpm_enable(core_if)) {
goto error;
}
if (wValue != UHF_PORT_L1 || wLength != 1) {
goto error;
}
/* Check if the port currently is in SLEEP state */
lpmcfg.d32 =
DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
if (lpmcfg.b.prt_sleep_sts) {
DWC_INFO("Port is already in sleep mode\n");
buf[0] = 0; /* Return success */
break;
}
portnum = wIndex & 0xf;
hird = (wIndex >> 4) & 0xf;
devaddr = (wIndex >> 8) & 0x7f;
remwake = (wIndex >> 15);
if (portnum != 1) {
retval = -DWC_E_INVALID;
DWC_WARN
("Wrong port number(%d) in SetandTestPortFeature request\n",
portnum);
break;
}
DWC_PRINTF
("SetandTestPortFeature request: portnum = %d, hird = %d, devaddr = %d, rewake = %d\n",
portnum, hird, devaddr, remwake);
/* Disable LPM interrupt */
gintmsk.d32 = 0;
gintmsk.b.lpmtranrcvd = 1;
DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk,
gintmsk.d32, 0);
if (dwc_otg_hcd_send_lpm
(dwc_otg_hcd, devaddr, hird, remwake)) {
retval = -DWC_E_INVALID;
break;
}
time_usecs = 10 * (lpmcfg.b.retry_count + 1);
/* We will consider timeout if time_usecs microseconds pass,
* and we don't receive LPM transaction status.
* After receiving non-error responce(ACK/NYET/STALL) from device,
* core will set lpmtranrcvd bit.
*/
do {
gintsts.d32 =
DWC_READ_REG32(&core_if->core_global_regs->gintsts);
if (gintsts.b.lpmtranrcvd) {
break;
}
dwc_udelay(1);
} while (--time_usecs);
/* lpm_int bit will be cleared in LPM interrupt handler */
/* Now fill status
* 0x00 - Success
* 0x10 - NYET
* 0x11 - Timeout
*/
if (!gintsts.b.lpmtranrcvd) {
buf[0] = 0x3; /* Completion code is Timeout */
dwc_otg_hcd_free_hc_from_lpm(dwc_otg_hcd);
} else {
lpmcfg.d32 =
DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
if (lpmcfg.b.lpm_resp == 0x3) {
/* ACK responce from the device */
buf[0] = 0x00; /* Success */
} else if (lpmcfg.b.lpm_resp == 0x2) {
/* NYET responce from the device */
buf[0] = 0x2;
} else {
/* Otherwise responce with Timeout */
buf[0] = 0x3;
}
}
DWC_PRINTF("Device responce to LPM trans is %x\n",
lpmcfg.b.lpm_resp);
DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, 0,
gintmsk.d32);
break;
}
#endif /* CONFIG_USB_DWC_OTG_LPM */
default:
error:
retval = -DWC_E_INVALID;
DWC_WARN("DWC OTG HCD - "
"Unknown hub control request type or invalid typeReq: %xh wIndex: %xh wValue: %xh\n",
typeReq, wIndex, wValue);
break;
}
return retval;
}
#ifdef CONFIG_USB_DWC_OTG_LPM
/** Returns index of host channel to perform LPM transaction. */
int dwc_otg_hcd_get_hc_for_lpm_tran(dwc_otg_hcd_t * hcd, uint8_t devaddr)
{
dwc_otg_core_if_t *core_if = hcd->core_if;
dwc_hc_t *hc;
hcchar_data_t hcchar;
gintmsk_data_t gintmsk = {.d32 = 0 };
if (DWC_CIRCLEQ_EMPTY(&hcd->free_hc_list)) {
DWC_PRINTF("No free channel to select for LPM transaction\n");
return -1;
}
hc = DWC_CIRCLEQ_FIRST(&hcd->free_hc_list);
/* Mask host channel interrupts. */
gintmsk.b.hcintr = 1;
DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, gintmsk.d32, 0);
/* Fill fields that core needs for LPM transaction */
hcchar.b.devaddr = devaddr;
hcchar.b.epnum = 0;
hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL;
hcchar.b.mps = 64;
hcchar.b.lspddev = (hc->speed == DWC_OTG_EP_SPEED_LOW);
hcchar.b.epdir = 0; /* OUT */
DWC_WRITE_REG32(&core_if->host_if->hc_regs[hc->hc_num]->hcchar,
hcchar.d32);
/* Remove the host channel from the free list. */
DWC_CIRCLEQ_REMOVE_INIT(&hcd->free_hc_list, hc, hc_list_entry);
DWC_PRINTF("hcnum = %d devaddr = %d\n", hc->hc_num, devaddr);
return hc->hc_num;
}
/** Release hc after performing LPM transaction */
void dwc_otg_hcd_free_hc_from_lpm(dwc_otg_hcd_t * hcd)
{
dwc_hc_t *hc;
glpmcfg_data_t lpmcfg;
uint8_t hc_num;
lpmcfg.d32 = DWC_READ_REG32(&hcd->core_if->core_global_regs->glpmcfg);
hc_num = lpmcfg.b.lpm_chan_index;
hc = hcd->hc_ptr_array[hc_num];
DWC_PRINTF("Freeing channel %d after LPM\n", hc_num);
/* Return host channel to free list */
DWC_CIRCLEQ_INSERT_TAIL(&hcd->free_hc_list, hc, hc_list_entry);
}
int dwc_otg_hcd_send_lpm(dwc_otg_hcd_t * hcd, uint8_t devaddr, uint8_t hird,
uint8_t bRemoteWake)
{
glpmcfg_data_t lpmcfg;
pcgcctl_data_t pcgcctl = {.d32 = 0 };
int channel;
channel = dwc_otg_hcd_get_hc_for_lpm_tran(hcd, devaddr);
if (channel < 0) {
return channel;
}
pcgcctl.b.enbl_sleep_gating = 1;
DWC_MODIFY_REG32(hcd->core_if->pcgcctl, 0, pcgcctl.d32);
/* Read LPM config register */
lpmcfg.d32 = DWC_READ_REG32(&hcd->core_if->core_global_regs->glpmcfg);
/* Program LPM transaction fields */
lpmcfg.b.rem_wkup_en = bRemoteWake;
lpmcfg.b.hird = hird;
lpmcfg.b.hird_thres = 0x1c;
lpmcfg.b.lpm_chan_index = channel;
lpmcfg.b.en_utmi_sleep = 1;
/* Program LPM config register */
DWC_WRITE_REG32(&hcd->core_if->core_global_regs->glpmcfg, lpmcfg.d32);
/* Send LPM transaction */
lpmcfg.b.send_lpm = 1;
DWC_WRITE_REG32(&hcd->core_if->core_global_regs->glpmcfg, lpmcfg.d32);
return 0;
}
#endif /* CONFIG_USB_DWC_OTG_LPM */
int dwc_otg_hcd_is_status_changed(dwc_otg_hcd_t * hcd, int port)
{
int retval;
if (port != 1) {
return -DWC_E_INVALID;
}
retval = (hcd->flags.b.port_connect_status_change ||
hcd->flags.b.port_reset_change ||
hcd->flags.b.port_enable_change ||
hcd->flags.b.port_suspend_change ||
hcd->flags.b.port_over_current_change);
#ifdef DEBUG
if (retval) {
DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB STATUS DATA:"
" Root port status changed\n");
DWC_DEBUGPL(DBG_HCDV, " port_connect_status_change: %d\n",
hcd->flags.b.port_connect_status_change);
DWC_DEBUGPL(DBG_HCDV, " port_reset_change: %d\n",
hcd->flags.b.port_reset_change);
DWC_DEBUGPL(DBG_HCDV, " port_enable_change: %d\n",
hcd->flags.b.port_enable_change);
DWC_DEBUGPL(DBG_HCDV, " port_suspend_change: %d\n",
hcd->flags.b.port_suspend_change);
DWC_DEBUGPL(DBG_HCDV, " port_over_current_change: %d\n",
hcd->flags.b.port_over_current_change);
}
#endif
return retval;
}
int dwc_otg_hcd_get_frame_number(dwc_otg_hcd_t * dwc_otg_hcd)
{
hfnum_data_t hfnum;
hfnum.d32 =
DWC_READ_REG32(&dwc_otg_hcd->core_if->host_if->host_global_regs->
hfnum);
#ifdef DEBUG_SOF
DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD GET FRAME NUMBER %d\n",
hfnum.b.frnum);
#endif
return hfnum.b.frnum;
}
int dwc_otg_hcd_start(dwc_otg_hcd_t * hcd,
struct dwc_otg_hcd_function_ops *fops)
{
int retval = 0;
hcd->fops = fops;
if (!dwc_otg_is_device_mode(hcd->core_if) &&
(!hcd->core_if->adp_enable || hcd->core_if->adp.adp_started)) {
dwc_otg_hcd_reinit(hcd);
} else {
retval = -DWC_E_NO_DEVICE;
}
return retval;
}
void *dwc_otg_hcd_get_priv_data(dwc_otg_hcd_t * hcd)
{
return hcd->priv;
}
void dwc_otg_hcd_set_priv_data(dwc_otg_hcd_t * hcd, void *priv_data)
{
hcd->priv = priv_data;
}
uint32_t dwc_otg_hcd_otg_port(dwc_otg_hcd_t * hcd)
{
return hcd->otg_port;
}
uint32_t dwc_otg_hcd_is_b_host(dwc_otg_hcd_t * hcd)
{
uint32_t is_b_host;
if (hcd->core_if->op_state == B_HOST) {
is_b_host = 1;
} else {
is_b_host = 0;
}
return is_b_host;
}
dwc_otg_hcd_urb_t *dwc_otg_hcd_urb_alloc(dwc_otg_hcd_t * hcd,
int iso_desc_count, int atomic_alloc)
{
dwc_otg_hcd_urb_t *dwc_otg_urb;
uint32_t size;
size =
sizeof(*dwc_otg_urb) +
iso_desc_count * sizeof(struct dwc_otg_hcd_iso_packet_desc);
if (atomic_alloc)
dwc_otg_urb = DWC_ALLOC_ATOMIC(size);
else
dwc_otg_urb = DWC_ALLOC(size);
if (dwc_otg_urb)
dwc_otg_urb->packet_count = iso_desc_count;
else {
DWC_ERROR("**** DWC OTG HCD URB alloc - "
"%salloc of %db failed\n",
atomic_alloc?"atomic ":"", size);
}
return dwc_otg_urb;
}
void dwc_otg_hcd_urb_set_pipeinfo(dwc_otg_hcd_urb_t * dwc_otg_urb,
uint8_t dev_addr, uint8_t ep_num,
uint8_t ep_type, uint8_t ep_dir, uint16_t mps)
{
dwc_otg_hcd_fill_pipe(&dwc_otg_urb->pipe_info, dev_addr, ep_num,
ep_type, ep_dir, mps);
#if 0
DWC_PRINTF
("addr = %d, ep_num = %d, ep_dir = 0x%x, ep_type = 0x%x, mps = %d\n",
dev_addr, ep_num, ep_dir, ep_type, mps);
#endif
}
void dwc_otg_hcd_urb_set_params(dwc_otg_hcd_urb_t * dwc_otg_urb,
void *urb_handle, void *buf, dwc_dma_t dma,
uint32_t buflen, void *setup_packet,
dwc_dma_t setup_dma, uint32_t flags,
uint16_t interval)
{
dwc_otg_urb->priv = urb_handle;
dwc_otg_urb->buf = buf;
dwc_otg_urb->dma = dma;
dwc_otg_urb->length = buflen;
dwc_otg_urb->setup_packet = setup_packet;
dwc_otg_urb->setup_dma = setup_dma;
dwc_otg_urb->flags = flags;
dwc_otg_urb->interval = interval;
dwc_otg_urb->status = -DWC_E_IN_PROGRESS;
}
uint32_t dwc_otg_hcd_urb_get_status(dwc_otg_hcd_urb_t * dwc_otg_urb)
{
return dwc_otg_urb->status;
}
uint32_t dwc_otg_hcd_urb_get_actual_length(dwc_otg_hcd_urb_t * dwc_otg_urb)
{
return dwc_otg_urb->actual_length;
}
uint32_t dwc_otg_hcd_urb_get_error_count(dwc_otg_hcd_urb_t * dwc_otg_urb)
{
return dwc_otg_urb->error_count;
}
void dwc_otg_hcd_urb_set_iso_desc_params(dwc_otg_hcd_urb_t * dwc_otg_urb,
int desc_num, uint32_t offset,
uint32_t length)
{
dwc_otg_urb->iso_descs[desc_num].offset = offset;
dwc_otg_urb->iso_descs[desc_num].length = length;
}
uint32_t dwc_otg_hcd_urb_get_iso_desc_status(dwc_otg_hcd_urb_t * dwc_otg_urb,
int desc_num)
{
return dwc_otg_urb->iso_descs[desc_num].status;
}
uint32_t dwc_otg_hcd_urb_get_iso_desc_actual_length(dwc_otg_hcd_urb_t *
dwc_otg_urb, int desc_num)
{
return dwc_otg_urb->iso_descs[desc_num].actual_length;
}
int dwc_otg_hcd_is_bandwidth_allocated(dwc_otg_hcd_t * hcd, void *ep_handle)
{
int allocated = 0;
dwc_otg_qh_t *qh = (dwc_otg_qh_t *) ep_handle;
if (qh) {
if (!DWC_LIST_EMPTY(&qh->qh_list_entry)) {
allocated = 1;
}
}
return allocated;
}
int dwc_otg_hcd_is_bandwidth_freed(dwc_otg_hcd_t * hcd, void *ep_handle)
{
dwc_otg_qh_t *qh = (dwc_otg_qh_t *) ep_handle;
int freed = 0;
DWC_ASSERT(qh, "qh is not allocated\n");
if (DWC_LIST_EMPTY(&qh->qh_list_entry)) {
freed = 1;
}
return freed;
}
uint8_t dwc_otg_hcd_get_ep_bandwidth(dwc_otg_hcd_t * hcd, void *ep_handle)
{
dwc_otg_qh_t *qh = (dwc_otg_qh_t *) ep_handle;
DWC_ASSERT(qh, "qh is not allocated\n");
return qh->usecs;
}
void dwc_otg_hcd_dump_state(dwc_otg_hcd_t * hcd)
{
#ifdef DEBUG
int num_channels;
int i;
gnptxsts_data_t np_tx_status;
hptxsts_data_t p_tx_status;
num_channels = hcd->core_if->core_params->host_channels;
DWC_PRINTF("\n");
DWC_PRINTF
("************************************************************\n");
DWC_PRINTF("HCD State:\n");
DWC_PRINTF(" Num channels: %d\n", num_channels);
for (i = 0; i < num_channels; i++) {
dwc_hc_t *hc = hcd->hc_ptr_array[i];
DWC_PRINTF(" Channel %d:\n", i);
DWC_PRINTF(" dev_addr: %d, ep_num: %d, ep_is_in: %d\n",
hc->dev_addr, hc->ep_num, hc->ep_is_in);
DWC_PRINTF(" speed: %d\n", hc->speed);
DWC_PRINTF(" ep_type: %d\n", hc->ep_type);
DWC_PRINTF(" max_packet: %d\n", hc->max_packet);
DWC_PRINTF(" data_pid_start: %d\n", hc->data_pid_start);
DWC_PRINTF(" multi_count: %d\n", hc->multi_count);
DWC_PRINTF(" xfer_started: %d\n", hc->xfer_started);
DWC_PRINTF(" xfer_buff: %p\n", hc->xfer_buff);
DWC_PRINTF(" xfer_len: %d\n", hc->xfer_len);
DWC_PRINTF(" xfer_count: %d\n", hc->xfer_count);
DWC_PRINTF(" halt_on_queue: %d\n", hc->halt_on_queue);
DWC_PRINTF(" halt_pending: %d\n", hc->halt_pending);
DWC_PRINTF(" halt_status: %d\n", hc->halt_status);
DWC_PRINTF(" do_split: %d\n", hc->do_split);
DWC_PRINTF(" complete_split: %d\n", hc->complete_split);
DWC_PRINTF(" hub_addr: %d\n", hc->hub_addr);
DWC_PRINTF(" port_addr: %d\n", hc->port_addr);
DWC_PRINTF(" xact_pos: %d\n", hc->xact_pos);
DWC_PRINTF(" requests: %d\n", hc->requests);
DWC_PRINTF(" qh: %p\n", hc->qh);
if (hc->xfer_started) {
hfnum_data_t hfnum;
hcchar_data_t hcchar;
hctsiz_data_t hctsiz;
hcint_data_t hcint;
hcintmsk_data_t hcintmsk;
hfnum.d32 =
DWC_READ_REG32(&hcd->core_if->
host_if->host_global_regs->hfnum);
hcchar.d32 =
DWC_READ_REG32(&hcd->core_if->host_if->
hc_regs[i]->hcchar);
hctsiz.d32 =
DWC_READ_REG32(&hcd->core_if->host_if->
hc_regs[i]->hctsiz);
hcint.d32 =
DWC_READ_REG32(&hcd->core_if->host_if->
hc_regs[i]->hcint);
hcintmsk.d32 =
DWC_READ_REG32(&hcd->core_if->host_if->
hc_regs[i]->hcintmsk);
DWC_PRINTF(" hfnum: 0x%08x\n", hfnum.d32);
DWC_PRINTF(" hcchar: 0x%08x\n", hcchar.d32);
DWC_PRINTF(" hctsiz: 0x%08x\n", hctsiz.d32);
DWC_PRINTF(" hcint: 0x%08x\n", hcint.d32);
DWC_PRINTF(" hcintmsk: 0x%08x\n", hcintmsk.d32);
}
if (hc->xfer_started && hc->qh) {
dwc_otg_qtd_t *qtd;
dwc_otg_hcd_urb_t *urb;
DWC_CIRCLEQ_FOREACH(qtd, &hc->qh->qtd_list, qtd_list_entry) {
if (!qtd->in_process)
break;
urb = qtd->urb;
DWC_PRINTF(" URB Info:\n");
DWC_PRINTF(" qtd: %p, urb: %p\n", qtd, urb);
if (urb) {
DWC_PRINTF(" Dev: %d, EP: %d %s\n",
dwc_otg_hcd_get_dev_addr(&urb->
pipe_info),
dwc_otg_hcd_get_ep_num(&urb->
pipe_info),
dwc_otg_hcd_is_pipe_in(&urb->
pipe_info) ?
"IN" : "OUT");
DWC_PRINTF(" Max packet size: %d\n",
dwc_otg_hcd_get_mps(&urb->
pipe_info));
DWC_PRINTF(" transfer_buffer: %p\n",
urb->buf);
DWC_PRINTF(" transfer_dma: %p\n",
(void *)urb->dma);
DWC_PRINTF(" transfer_buffer_length: %d\n",
urb->length);
DWC_PRINTF(" actual_length: %d\n",
urb->actual_length);
}
}
}
}
DWC_PRINTF(" non_periodic_channels: %d\n", hcd->non_periodic_channels);
DWC_PRINTF(" periodic_channels: %d\n", hcd->periodic_channels);
DWC_PRINTF(" periodic_usecs: %d\n", hcd->periodic_usecs);
np_tx_status.d32 =
DWC_READ_REG32(&hcd->core_if->core_global_regs->gnptxsts);
DWC_PRINTF(" NP Tx Req Queue Space Avail: %d\n",
np_tx_status.b.nptxqspcavail);
DWC_PRINTF(" NP Tx FIFO Space Avail: %d\n",
np_tx_status.b.nptxfspcavail);
p_tx_status.d32 =
DWC_READ_REG32(&hcd->core_if->host_if->host_global_regs->hptxsts);
DWC_PRINTF(" P Tx Req Queue Space Avail: %d\n",
p_tx_status.b.ptxqspcavail);
DWC_PRINTF(" P Tx FIFO Space Avail: %d\n", p_tx_status.b.ptxfspcavail);
dwc_otg_hcd_dump_frrem(hcd);
dwc_otg_dump_global_registers(hcd->core_if);
dwc_otg_dump_host_registers(hcd->core_if);
DWC_PRINTF
("************************************************************\n");
DWC_PRINTF("\n");
#endif
}
#ifdef DEBUG
void dwc_print_setup_data(uint8_t * setup)
{
int i;
if (CHK_DEBUG_LEVEL(DBG_HCD)) {
DWC_PRINTF("Setup Data = MSB ");
for (i = 7; i >= 0; i--)
DWC_PRINTF("%02x ", setup[i]);
DWC_PRINTF("\n");
DWC_PRINTF(" bmRequestType Tranfer = %s\n",
(setup[0] & 0x80) ? "Device-to-Host" :
"Host-to-Device");
DWC_PRINTF(" bmRequestType Type = ");
switch ((setup[0] & 0x60) >> 5) {
case 0:
DWC_PRINTF("Standard\n");
break;
case 1:
DWC_PRINTF("Class\n");
break;
case 2:
DWC_PRINTF("Vendor\n");
break;
case 3:
DWC_PRINTF("Reserved\n");
break;
}
DWC_PRINTF(" bmRequestType Recipient = ");
switch (setup[0] & 0x1f) {
case 0:
DWC_PRINTF("Device\n");
break;
case 1:
DWC_PRINTF("Interface\n");
break;
case 2:
DWC_PRINTF("Endpoint\n");
break;
case 3:
DWC_PRINTF("Other\n");
break;
default:
DWC_PRINTF("Reserved\n");
break;
}
DWC_PRINTF(" bRequest = 0x%0x\n", setup[1]);
DWC_PRINTF(" wValue = 0x%0x\n", *((uint16_t *) & setup[2]));
DWC_PRINTF(" wIndex = 0x%0x\n", *((uint16_t *) & setup[4]));
DWC_PRINTF(" wLength = 0x%0x\n\n", *((uint16_t *) & setup[6]));
}
}
#endif
void dwc_otg_hcd_dump_frrem(dwc_otg_hcd_t * hcd)
{
#if 0
DWC_PRINTF("Frame remaining at SOF:\n");
DWC_PRINTF(" samples %u, accum %llu, avg %llu\n",
hcd->frrem_samples, hcd->frrem_accum,
(hcd->frrem_samples > 0) ?
hcd->frrem_accum / hcd->frrem_samples : 0);
DWC_PRINTF("\n");
DWC_PRINTF("Frame remaining at start_transfer (uframe 7):\n");
DWC_PRINTF(" samples %u, accum %llu, avg %llu\n",
hcd->core_if->hfnum_7_samples,
hcd->core_if->hfnum_7_frrem_accum,
(hcd->core_if->hfnum_7_samples >
0) ? hcd->core_if->hfnum_7_frrem_accum /
hcd->core_if->hfnum_7_samples : 0);
DWC_PRINTF("Frame remaining at start_transfer (uframe 0):\n");
DWC_PRINTF(" samples %u, accum %llu, avg %llu\n",
hcd->core_if->hfnum_0_samples,
hcd->core_if->hfnum_0_frrem_accum,
(hcd->core_if->hfnum_0_samples >
0) ? hcd->core_if->hfnum_0_frrem_accum /
hcd->core_if->hfnum_0_samples : 0);
DWC_PRINTF("Frame remaining at start_transfer (uframe 1-6):\n");
DWC_PRINTF(" samples %u, accum %llu, avg %llu\n",
hcd->core_if->hfnum_other_samples,
hcd->core_if->hfnum_other_frrem_accum,
(hcd->core_if->hfnum_other_samples >
0) ? hcd->core_if->hfnum_other_frrem_accum /
hcd->core_if->hfnum_other_samples : 0);
DWC_PRINTF("\n");
DWC_PRINTF("Frame remaining at sample point A (uframe 7):\n");
DWC_PRINTF(" samples %u, accum %llu, avg %llu\n",
hcd->hfnum_7_samples_a, hcd->hfnum_7_frrem_accum_a,
(hcd->hfnum_7_samples_a > 0) ?
hcd->hfnum_7_frrem_accum_a / hcd->hfnum_7_samples_a : 0);
DWC_PRINTF("Frame remaining at sample point A (uframe 0):\n");
DWC_PRINTF(" samples %u, accum %llu, avg %llu\n",
hcd->hfnum_0_samples_a, hcd->hfnum_0_frrem_accum_a,
(hcd->hfnum_0_samples_a > 0) ?
hcd->hfnum_0_frrem_accum_a / hcd->hfnum_0_samples_a : 0);
DWC_PRINTF("Frame remaining at sample point A (uframe 1-6):\n");
DWC_PRINTF(" samples %u, accum %llu, avg %llu\n",
hcd->hfnum_other_samples_a, hcd->hfnum_other_frrem_accum_a,
(hcd->hfnum_other_samples_a > 0) ?
hcd->hfnum_other_frrem_accum_a /
hcd->hfnum_other_samples_a : 0);
DWC_PRINTF("\n");
DWC_PRINTF("Frame remaining at sample point B (uframe 7):\n");
DWC_PRINTF(" samples %u, accum %llu, avg %llu\n",
hcd->hfnum_7_samples_b, hcd->hfnum_7_frrem_accum_b,
(hcd->hfnum_7_samples_b > 0) ?
hcd->hfnum_7_frrem_accum_b / hcd->hfnum_7_samples_b : 0);
DWC_PRINTF("Frame remaining at sample point B (uframe 0):\n");
DWC_PRINTF(" samples %u, accum %llu, avg %llu\n",
hcd->hfnum_0_samples_b, hcd->hfnum_0_frrem_accum_b,
(hcd->hfnum_0_samples_b > 0) ?
hcd->hfnum_0_frrem_accum_b / hcd->hfnum_0_samples_b : 0);
DWC_PRINTF("Frame remaining at sample point B (uframe 1-6):\n");
DWC_PRINTF(" samples %u, accum %llu, avg %llu\n",
hcd->hfnum_other_samples_b, hcd->hfnum_other_frrem_accum_b,
(hcd->hfnum_other_samples_b > 0) ?
hcd->hfnum_other_frrem_accum_b /
hcd->hfnum_other_samples_b : 0);
#endif
}
#endif /* DWC_DEVICE_ONLY */