*/
void cdns3_hw_reset_eps_config(struct cdns3_device *priv_dev)
{
+ int i;
+
writel(USB_CONF_CFGRST, &priv_dev->regs->usb_conf);
cdns3_allow_enable_l1(priv_dev, 0);
priv_dev->out_mem_is_allocated = 0;
priv_dev->wait_for_setup = 0;
priv_dev->using_streams = 0;
+
+ for (i = 0; i < CDNS3_ENDPOINTS_MAX_COUNT; i++)
+ if (priv_dev->eps[i])
+ priv_dev->eps[i]->flags &= ~EP_CONFIGURED;
}
/**
while (!list_empty(&priv_ep->wa2_descmiss_req_list)) {
int chunk_end;
- int length;
descmiss_priv_req =
cdns3_next_priv_request(&priv_ep->wa2_descmiss_req_list);
break;
chunk_end = descmiss_priv_req->flags & REQUEST_INTERNAL_CH;
- length = request->actual + descmiss_req->actual;
request->status = descmiss_req->status;
__cdns3_descmiss_copy_data(request, descmiss_req);
list_del_init(&descmiss_priv_req->list);
static void cdns3_disconnect_gadget(struct cdns3_device *priv_dev)
{
- if (priv_dev->gadget_driver && priv_dev->gadget_driver->disconnect) {
- spin_unlock(&priv_dev->lock);
+ if (priv_dev->gadget_driver && priv_dev->gadget_driver->disconnect)
priv_dev->gadget_driver->disconnect(&priv_dev->gadget);
- spin_lock(&priv_dev->lock);
- }
}
/**
*/
static void cdns3_check_usb_interrupt_proceed(struct cdns3_device *priv_dev,
u32 usb_ists)
+__must_hold(&priv_dev->lock)
{
int speed = 0;
/* Disconnection detected */
if (usb_ists & (USB_ISTS_DIS2I | USB_ISTS_DISI)) {
+ spin_unlock(&priv_dev->lock);
cdns3_disconnect_gadget(priv_dev);
+ spin_lock(&priv_dev->lock);
priv_dev->gadget.speed = USB_SPEED_UNKNOWN;
usb_gadget_set_state(&priv_dev->gadget, USB_STATE_NOTATTACHED);
cdns3_hw_reset_eps_config(priv_dev);
return 0;
}
-static void cdns3_stream_ep_reconfig(struct cdns3_device *priv_dev,
- struct cdns3_endpoint *priv_ep)
-{
- if (!priv_ep->use_streams || priv_dev->gadget.speed < USB_SPEED_SUPER)
- return;
-
- if (priv_dev->dev_ver >= DEV_VER_V3) {
- u32 mask = BIT(priv_ep->num + (priv_ep->dir ? 16 : 0));
-
- /*
- * Stream capable endpoints are handled by using ep_tdl
- * register. Other endpoints use TDL from TRB feature.
- */
- cdns3_clear_register_bit(&priv_dev->regs->tdl_from_trb, mask);
- }
-
- /* Enable Stream Bit TDL chk and SID chk */
- cdns3_set_register_bit(&priv_dev->regs->ep_cfg, EP_CFG_STREAM_EN |
- EP_CFG_TDL_CHK | EP_CFG_SID_CHK);
-}
-
static void cdns3_configure_dmult(struct cdns3_device *priv_dev,
struct cdns3_endpoint *priv_ep)
{
/**
* cdns3_ep_config Configure hardware endpoint
* @priv_ep: extended endpoint object
+ * @enable: set EP_CFG_ENABLE bit in ep_cfg register.
*/
-void cdns3_ep_config(struct cdns3_endpoint *priv_ep)
+int cdns3_ep_config(struct cdns3_endpoint *priv_ep, bool enable)
{
bool is_iso_ep = (priv_ep->type == USB_ENDPOINT_XFER_ISOC);
struct cdns3_device *priv_dev = priv_ep->cdns3_dev;
break;
default:
/* all other speed are not supported */
- return;
+ return -EINVAL;
}
if (max_packet_size == 1024)
else
priv_ep->trb_burst_size = 16;
- ret = cdns3_ep_onchip_buffer_reserve(priv_dev, buffering + 1,
- !!priv_ep->dir);
- if (ret) {
- dev_err(priv_dev->dev, "onchip mem is full, ep is invalid\n");
- return;
+ /* onchip buffer is only allocated before configuration */
+ if (!priv_dev->hw_configured_flag) {
+ ret = cdns3_ep_onchip_buffer_reserve(priv_dev, buffering + 1,
+ !!priv_ep->dir);
+ if (ret) {
+ dev_err(priv_dev->dev, "onchip mem is full, ep is invalid\n");
+ return ret;
+ }
+ }
+
+ if (enable)
+ ep_cfg |= EP_CFG_ENABLE;
+
+ if (priv_ep->use_streams && priv_dev->gadget.speed >= USB_SPEED_SUPER) {
+ if (priv_dev->dev_ver >= DEV_VER_V3) {
+ u32 mask = BIT(priv_ep->num + (priv_ep->dir ? 16 : 0));
+
+ /*
+ * Stream capable endpoints are handled by using ep_tdl
+ * register. Other endpoints use TDL from TRB feature.
+ */
+ cdns3_clear_register_bit(&priv_dev->regs->tdl_from_trb,
+ mask);
+ }
+
+ /* Enable Stream Bit TDL chk and SID chk */
+ ep_cfg |= EP_CFG_STREAM_EN | EP_CFG_TDL_CHK | EP_CFG_SID_CHK;
}
ep_cfg |= EP_CFG_MAXPKTSIZE(max_packet_size) |
cdns3_select_ep(priv_dev, bEndpointAddress);
writel(ep_cfg, &priv_dev->regs->ep_cfg);
+ priv_ep->flags |= EP_CONFIGURED;
dev_dbg(priv_dev->dev, "Configure %s: with val %08x\n",
priv_ep->name, ep_cfg);
+
+ return 0;
}
/* Find correct direction for HW endpoint according to description */
u32 bEndpointAddress;
unsigned long flags;
int enable = 1;
- int ret;
+ int ret = 0;
int val;
priv_ep = ep_to_cdns3_ep(ep);
bEndpointAddress = priv_ep->num | priv_ep->dir;
cdns3_select_ep(priv_dev, bEndpointAddress);
+ /*
+ * For some versions of controller at some point during ISO OUT traffic
+ * DMA reads Transfer Ring for the EP which has never got doorbell.
+ * This issue was detected only on simulation, but to avoid this issue
+ * driver add protection against it. To fix it driver enable ISO OUT
+ * endpoint before setting DRBL. This special treatment of ISO OUT
+ * endpoints are recommended by controller specification.
+ */
+ if (priv_ep->type == USB_ENDPOINT_XFER_ISOC && !priv_ep->dir)
+ enable = 0;
+
if (usb_ss_max_streams(comp_desc) && usb_endpoint_xfer_bulk(desc)) {
/*
* Enable stream support (SS mode) related interrupts
EP_STS_EN_SIDERREN | EP_STS_EN_MD_EXITEN |
EP_STS_EN_STREAMREN;
priv_ep->use_streams = true;
- cdns3_stream_ep_reconfig(priv_dev, priv_ep);
+ ret = cdns3_ep_config(priv_ep, enable);
priv_dev->using_streams |= true;
}
+ } else {
+ ret = cdns3_ep_config(priv_ep, enable);
}
- ret = cdns3_allocate_trb_pool(priv_ep);
+ if (ret)
+ goto exit;
+ ret = cdns3_allocate_trb_pool(priv_ep);
if (ret)
goto exit;
writel(reg, &priv_dev->regs->ep_sts_en);
- /*
- * For some versions of controller at some point during ISO OUT traffic
- * DMA reads Transfer Ring for the EP which has never got doorbell.
- * This issue was detected only on simulation, but to avoid this issue
- * driver add protection against it. To fix it driver enable ISO OUT
- * endpoint before setting DRBL. This special treatment of ISO OUT
- * endpoints are recommended by controller specification.
- */
- if (priv_ep->type == USB_ENDPOINT_XFER_ISOC && !priv_ep->dir)
- enable = 0;
-
- if (enable)
- cdns3_set_register_bit(&priv_dev->regs->ep_cfg, EP_CFG_ENABLE);
-
ep->desc = desc;
priv_ep->flags &= ~(EP_PENDING_REQUEST | EP_STALLED | EP_STALL_PENDING |
EP_QUIRK_ISO_OUT_EN | EP_QUIRK_EXTRA_BUF_EN);
}
static int cdns3_gadget_suspend(struct cdns3 *cdns, bool do_wakeup)
+__must_hold(&cdns->lock)
{
struct cdns3_device *priv_dev = cdns->gadget_dev;
+ spin_unlock(&cdns->lock);
cdns3_disconnect_gadget(priv_dev);
+ spin_lock(&cdns->lock);
priv_dev->gadget.speed = USB_SPEED_UNKNOWN;
usb_gadget_set_state(&priv_dev->gadget, USB_STATE_NOTATTACHED);
git.samba.org / sfrench / cifs-2.6.git / blobdiff