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path: root/drivers/usb/dwc3/ep0.c
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Diffstat (limited to 'drivers/usb/dwc3/ep0.c')
-rw-r--r--drivers/usb/dwc3/ep0.c146
1 files changed, 92 insertions, 54 deletions
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 9e8a3dce69f..9b94886b66e 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -54,7 +54,9 @@
#include "gadget.h"
#include "io.h"
-static void dwc3_ep0_do_control_status(struct dwc3 *dwc, u32 epnum);
+static void __dwc3_ep0_do_control_status(struct dwc3 *dwc, struct dwc3_ep *dep);
+static void __dwc3_ep0_do_control_data(struct dwc3 *dwc,
+ struct dwc3_ep *dep, struct dwc3_request *req);
static const char *dwc3_ep0_state_string(enum dwc3_ep0_state state)
{
@@ -111,7 +113,7 @@ static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum, dma_addr_t buf_dma,
}
dep->flags |= DWC3_EP_BUSY;
- dep->res_trans_idx = dwc3_gadget_ep_get_transfer_index(dwc,
+ dep->resource_index = dwc3_gadget_ep_get_transfer_index(dwc,
dep->number);
dwc->ep0_next_event = DWC3_EP0_COMPLETE;
@@ -150,16 +152,15 @@ static int __dwc3_gadget_ep0_queue(struct dwc3_ep *dep,
return 0;
}
- ret = dwc3_ep0_start_trans(dwc, direction,
- req->request.dma, req->request.length,
- DWC3_TRBCTL_CONTROL_DATA);
+ __dwc3_ep0_do_control_data(dwc, dwc->eps[direction], req);
+
dep->flags &= ~(DWC3_EP_PENDING_REQUEST |
DWC3_EP0_DIR_IN);
} else if (dwc->delayed_status) {
dwc->delayed_status = false;
if (dwc->ep0state == EP0_STATUS_PHASE)
- dwc3_ep0_do_control_status(dwc, 1);
+ __dwc3_ep0_do_control_status(dwc, dwc->eps[1]);
else
dev_dbg(dwc->dev, "too early for delayed status\n");
}
@@ -224,6 +225,16 @@ static void dwc3_ep0_stall_and_restart(struct dwc3 *dwc)
dwc3_ep0_out_start(dwc);
}
+int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value)
+{
+ struct dwc3_ep *dep = to_dwc3_ep(ep);
+ struct dwc3 *dwc = dep->dwc;
+
+ dwc3_ep0_stall_and_restart(dwc);
+
+ return 0;
+}
+
void dwc3_ep0_out_start(struct dwc3 *dwc)
{
int ret;
@@ -463,6 +474,7 @@ static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
{
u32 cfg;
int ret;
+ u32 reg;
dwc->start_config_issued = false;
cfg = le16_to_cpu(ctrl->wValue);
@@ -477,6 +489,14 @@ static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
/* if the cfg matches and the cfg is non zero */
if (cfg && (!ret || (ret == USB_GADGET_DELAYED_STATUS))) {
dwc->dev_state = DWC3_CONFIGURED_STATE;
+ /*
+ * Enable transition to U1/U2 state when
+ * nothing is pending from application.
+ */
+ reg = dwc3_readl(dwc->regs, DWC3_DCTL);
+ reg |= (DWC3_DCTL_ACCEPTU1ENA | DWC3_DCTL_ACCEPTU2ENA);
+ dwc3_writel(dwc->regs, DWC3_DCTL, reg);
+
dwc->resize_fifos = true;
dev_dbg(dwc->dev, "resize fifos flag SET\n");
}
@@ -514,8 +534,8 @@ static void dwc3_ep0_set_sel_cmpl(struct usb_ep *ep, struct usb_request *req)
dwc->u1sel = timing.u1sel;
dwc->u1pel = timing.u1pel;
- dwc->u2sel = timing.u2sel;
- dwc->u2pel = timing.u2pel;
+ dwc->u2sel = le16_to_cpu(timing.u2sel);
+ dwc->u2pel = le16_to_cpu(timing.u2pel);
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
if (reg & DWC3_DCTL_INITU2ENA)
@@ -640,11 +660,11 @@ static void dwc3_ep0_inspect_setup(struct dwc3 *dwc,
const struct dwc3_event_depevt *event)
{
struct usb_ctrlrequest *ctrl = dwc->ctrl_req;
- int ret;
+ int ret = -EINVAL;
u32 len;
if (!dwc->gadget_driver)
- goto err;
+ goto out;
len = le16_to_cpu(ctrl->wLength);
if (!len) {
@@ -665,11 +685,9 @@ static void dwc3_ep0_inspect_setup(struct dwc3 *dwc,
if (ret == USB_GADGET_DELAYED_STATUS)
dwc->delayed_status = true;
- if (ret >= 0)
- return;
-
-err:
- dwc3_ep0_stall_and_restart(dwc);
+out:
+ if (ret < 0)
+ dwc3_ep0_stall_and_restart(dwc);
}
static void dwc3_ep0_complete_data(struct dwc3 *dwc,
@@ -723,7 +741,7 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc,
}
}
-static void dwc3_ep0_complete_req(struct dwc3 *dwc,
+static void dwc3_ep0_complete_status(struct dwc3 *dwc,
const struct dwc3_event_depevt *event)
{
struct dwc3_request *r;
@@ -745,6 +763,7 @@ static void dwc3_ep0_complete_req(struct dwc3 *dwc,
dev_dbg(dwc->dev, "Invalid Test #%d\n",
dwc->test_mode_nr);
dwc3_ep0_stall_and_restart(dwc);
+ return;
}
}
@@ -758,7 +777,7 @@ static void dwc3_ep0_xfer_complete(struct dwc3 *dwc,
struct dwc3_ep *dep = dwc->eps[event->endpoint_number];
dep->flags &= ~DWC3_EP_BUSY;
- dep->res_trans_idx = 0;
+ dep->resource_index = 0;
dwc->setup_packet_pending = false;
switch (dwc->ep0state) {
@@ -774,7 +793,7 @@ static void dwc3_ep0_xfer_complete(struct dwc3 *dwc,
case EP0_STATUS_PHASE:
dev_vdbg(dwc->dev, "Status Phase\n");
- dwc3_ep0_complete_req(dwc, event);
+ dwc3_ep0_complete_status(dwc, event);
break;
default:
WARN(true, "UNKNOWN ep0state %d\n", dwc->ep0state);
@@ -787,68 +806,81 @@ static void dwc3_ep0_do_control_setup(struct dwc3 *dwc,
dwc3_ep0_out_start(dwc);
}
-static void dwc3_ep0_do_control_data(struct dwc3 *dwc,
- const struct dwc3_event_depevt *event)
+static void __dwc3_ep0_do_control_data(struct dwc3 *dwc,
+ struct dwc3_ep *dep, struct dwc3_request *req)
{
- struct dwc3_ep *dep;
- struct dwc3_request *req;
int ret;
- dep = dwc->eps[0];
-
- if (list_empty(&dep->request_list)) {
- dev_vdbg(dwc->dev, "pending request for EP0 Data phase\n");
- dep->flags |= DWC3_EP_PENDING_REQUEST;
-
- if (event->endpoint_number)
- dep->flags |= DWC3_EP0_DIR_IN;
- return;
- }
-
- req = next_request(&dep->request_list);
- req->direction = !!event->endpoint_number;
+ req->direction = !!dep->number;
if (req->request.length == 0) {
- ret = dwc3_ep0_start_trans(dwc, event->endpoint_number,
+ ret = dwc3_ep0_start_trans(dwc, dep->number,
dwc->ctrl_req_addr, 0,
DWC3_TRBCTL_CONTROL_DATA);
- } else if ((req->request.length % dep->endpoint.maxpacket)
- && (event->endpoint_number == 0)) {
+ } else if (!IS_ALIGNED(req->request.length, dep->endpoint.maxpacket)
+ && (dep->number == 0)) {
+ u32 transfer_size;
+
ret = usb_gadget_map_request(&dwc->gadget, &req->request,
- event->endpoint_number);
+ dep->number);
if (ret) {
dev_dbg(dwc->dev, "failed to map request\n");
return;
}
- WARN_ON(req->request.length > dep->endpoint.maxpacket);
+ WARN_ON(req->request.length > DWC3_EP0_BOUNCE_SIZE);
+
+ transfer_size = roundup(req->request.length,
+ (u32) dep->endpoint.maxpacket);
dwc->ep0_bounced = true;
/*
- * REVISIT in case request length is bigger than EP0
- * wMaxPacketSize, we will need two chained TRBs to handle
- * the transfer.
+ * REVISIT in case request length is bigger than
+ * DWC3_EP0_BOUNCE_SIZE we will need two chained
+ * TRBs to handle the transfer.
*/
- ret = dwc3_ep0_start_trans(dwc, event->endpoint_number,
- dwc->ep0_bounce_addr, dep->endpoint.maxpacket,
+ ret = dwc3_ep0_start_trans(dwc, dep->number,
+ dwc->ep0_bounce_addr, transfer_size,
DWC3_TRBCTL_CONTROL_DATA);
} else {
ret = usb_gadget_map_request(&dwc->gadget, &req->request,
- event->endpoint_number);
+ dep->number);
if (ret) {
dev_dbg(dwc->dev, "failed to map request\n");
return;
}
- ret = dwc3_ep0_start_trans(dwc, event->endpoint_number,
- req->request.dma, req->request.length,
- DWC3_TRBCTL_CONTROL_DATA);
+ ret = dwc3_ep0_start_trans(dwc, dep->number, req->request.dma,
+ req->request.length, DWC3_TRBCTL_CONTROL_DATA);
}
WARN_ON(ret < 0);
}
+static void dwc3_ep0_do_control_data(struct dwc3 *dwc,
+ const struct dwc3_event_depevt *event)
+{
+ struct dwc3_ep *dep;
+ struct dwc3_request *req;
+
+ dep = dwc->eps[0];
+
+ if (list_empty(&dep->request_list)) {
+ dev_vdbg(dwc->dev, "pending request for EP0 Data phase\n");
+ dep->flags |= DWC3_EP_PENDING_REQUEST;
+
+ if (event->endpoint_number)
+ dep->flags |= DWC3_EP0_DIR_IN;
+ return;
+ }
+
+ req = next_request(&dep->request_list);
+ dep = dwc->eps[event->endpoint_number];
+
+ __dwc3_ep0_do_control_data(dwc, dep, req);
+}
+
static int dwc3_ep0_start_control_status(struct dwc3_ep *dep)
{
struct dwc3 *dwc = dep->dwc;
@@ -861,10 +893,8 @@ static int dwc3_ep0_start_control_status(struct dwc3_ep *dep)
dwc->ctrl_req_addr, 0, type);
}
-static void dwc3_ep0_do_control_status(struct dwc3 *dwc, u32 epnum)
+static void __dwc3_ep0_do_control_status(struct dwc3 *dwc, struct dwc3_ep *dep)
{
- struct dwc3_ep *dep = dwc->eps[epnum];
-
if (dwc->resize_fifos) {
dev_dbg(dwc->dev, "starting to resize fifos\n");
dwc3_gadget_resize_tx_fifos(dwc);
@@ -874,13 +904,21 @@ static void dwc3_ep0_do_control_status(struct dwc3 *dwc, u32 epnum)
WARN_ON(dwc3_ep0_start_control_status(dep));
}
+static void dwc3_ep0_do_control_status(struct dwc3 *dwc,
+ const struct dwc3_event_depevt *event)
+{
+ struct dwc3_ep *dep = dwc->eps[event->endpoint_number];
+
+ __dwc3_ep0_do_control_status(dwc, dep);
+}
+
static void dwc3_ep0_xfernotready(struct dwc3 *dwc,
const struct dwc3_event_depevt *event)
{
dwc->setup_packet_pending = true;
/*
- * This part is very tricky: If we has just handled
+ * This part is very tricky: If we have just handled
* XferNotReady(Setup) and we're now expecting a
* XferComplete but, instead, we receive another
* XferNotReady(Setup), we should STALL and restart
@@ -974,7 +1012,7 @@ static void dwc3_ep0_xfernotready(struct dwc3 *dwc,
return;
}
- dwc3_ep0_do_control_status(dwc, event->endpoint_number);
+ dwc3_ep0_do_control_status(dwc, event);
}
}