summaryrefslogtreecommitdiff
path: root/drivers/usb/dwc3/gadget.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/usb/dwc3/gadget.c')
-rw-r--r--drivers/usb/dwc3/gadget.c151
1 files changed, 23 insertions, 128 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 349cacc577d8..3818b26bfc05 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -30,6 +30,7 @@
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
+#include "debug.h"
#include "core.h"
#include "gadget.h"
#include "io.h"
@@ -266,107 +267,19 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
dev_dbg(dwc->dev, "request %p from %s completed %d/%d ===> %d\n",
req, dep->name, req->request.actual,
req->request.length, status);
+ trace_dwc3_gadget_giveback(req);
spin_unlock(&dwc->lock);
- req->request.complete(&dep->endpoint, &req->request);
+ usb_gadget_giveback_request(&dep->endpoint, &req->request);
spin_lock(&dwc->lock);
}
-static const char *dwc3_gadget_ep_cmd_string(u8 cmd)
-{
- switch (cmd) {
- case DWC3_DEPCMD_DEPSTARTCFG:
- return "Start New Configuration";
- case DWC3_DEPCMD_ENDTRANSFER:
- return "End Transfer";
- case DWC3_DEPCMD_UPDATETRANSFER:
- return "Update Transfer";
- case DWC3_DEPCMD_STARTTRANSFER:
- return "Start Transfer";
- case DWC3_DEPCMD_CLEARSTALL:
- return "Clear Stall";
- case DWC3_DEPCMD_SETSTALL:
- return "Set Stall";
- case DWC3_DEPCMD_GETEPSTATE:
- return "Get Endpoint State";
- case DWC3_DEPCMD_SETTRANSFRESOURCE:
- return "Set Endpoint Transfer Resource";
- case DWC3_DEPCMD_SETEPCONFIG:
- return "Set Endpoint Configuration";
- default:
- return "UNKNOWN command";
- }
-}
-
-static const char *dwc3_gadget_generic_cmd_string(u8 cmd)
-{
- switch (cmd) {
- case DWC3_DGCMD_SET_LMP:
- return "Set LMP";
- case DWC3_DGCMD_SET_PERIODIC_PAR:
- return "Set Periodic Parameters";
- case DWC3_DGCMD_XMIT_FUNCTION:
- return "Transmit Function Wake Device Notification";
- case DWC3_DGCMD_SET_SCRATCHPAD_ADDR_LO:
- return "Set Scratchpad Buffer Array Address Lo";
- case DWC3_DGCMD_SET_SCRATCHPAD_ADDR_HI:
- return "Set Scratchpad Buffer Array Address Hi";
- case DWC3_DGCMD_SELECTED_FIFO_FLUSH:
- return "Selected FIFO Flush";
- case DWC3_DGCMD_ALL_FIFO_FLUSH:
- return "All FIFO Flush";
- case DWC3_DGCMD_SET_ENDPOINT_NRDY:
- return "Set Endpoint NRDY";
- case DWC3_DGCMD_RUN_SOC_BUS_LOOPBACK:
- return "Run SoC Bus Loopback Test";
- default:
- return "UNKNOWN";
- }
-}
-
-static const char *dwc3_gadget_link_string(enum dwc3_link_state link_state)
-{
- switch (link_state) {
- case DWC3_LINK_STATE_U0:
- return "U0";
- case DWC3_LINK_STATE_U1:
- return "U1";
- case DWC3_LINK_STATE_U2:
- return "U2";
- case DWC3_LINK_STATE_U3:
- return "U3";
- case DWC3_LINK_STATE_SS_DIS:
- return "SS.Disabled";
- case DWC3_LINK_STATE_RX_DET:
- return "RX.Detect";
- case DWC3_LINK_STATE_SS_INACT:
- return "SS.Inactive";
- case DWC3_LINK_STATE_POLL:
- return "Polling";
- case DWC3_LINK_STATE_RECOV:
- return "Recovery";
- case DWC3_LINK_STATE_HRESET:
- return "Hot Reset";
- case DWC3_LINK_STATE_CMPLY:
- return "Compliance";
- case DWC3_LINK_STATE_LPBK:
- return "Loopback";
- case DWC3_LINK_STATE_RESET:
- return "Reset";
- case DWC3_LINK_STATE_RESUME:
- return "Resume";
- default:
- return "UNKNOWN link state\n";
- }
-}
-
-int dwc3_send_gadget_generic_command(struct dwc3 *dwc, int cmd, u32 param)
+int dwc3_send_gadget_generic_command(struct dwc3 *dwc, unsigned cmd, u32 param)
{
u32 timeout = 500;
u32 reg;
- dev_vdbg(dwc->dev, "generic cmd '%s' [%d] param %08x\n",
- dwc3_gadget_generic_cmd_string(cmd), cmd, param);
+ trace_dwc3_gadget_generic_cmd(cmd, param);
dwc3_writel(dwc->regs, DWC3_DGCMDPAR, param);
dwc3_writel(dwc->regs, DWC3_DGCMD, cmd | DWC3_DGCMD_CMDACT);
@@ -397,10 +310,7 @@ int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
u32 timeout = 500;
u32 reg;
- dev_vdbg(dwc->dev, "%s: cmd '%s' [%d] params %08x %08x %08x\n",
- dep->name,
- dwc3_gadget_ep_cmd_string(cmd), cmd, params->param0,
- params->param1, params->param2);
+ trace_dwc3_gadget_ep_cmd(dep, cmd, params);
dwc3_writel(dwc->regs, DWC3_DEPCMDPAR0(ep), params->param0);
dwc3_writel(dwc->regs, DWC3_DEPCMDPAR1(ep), params->param1);
@@ -527,7 +437,7 @@ static int dwc3_gadget_set_ep_config(struct dwc3 *dwc, struct dwc3_ep *dep,
dep->stream_capable = true;
}
- if (usb_endpoint_xfer_isoc(desc))
+ if (!usb_endpoint_xfer_control(desc))
params.param1 |= DWC3_DEPCFG_XFER_IN_PROGRESS_EN;
/*
@@ -789,17 +699,16 @@ static struct usb_request *dwc3_gadget_ep_alloc_request(struct usb_ep *ep,
{
struct dwc3_request *req;
struct dwc3_ep *dep = to_dwc3_ep(ep);
- struct dwc3 *dwc = dep->dwc;
req = kzalloc(sizeof(*req), gfp_flags);
- if (!req) {
- dev_err(dwc->dev, "not enough memory\n");
+ if (!req)
return NULL;
- }
req->epnum = dep->number;
req->dep = dep;
+ trace_dwc3_alloc_request(req);
+
return &req->request;
}
@@ -808,6 +717,7 @@ static void dwc3_gadget_ep_free_request(struct usb_ep *ep,
{
struct dwc3_request *req = to_dwc3_request(request);
+ trace_dwc3_free_request(req);
kfree(req);
}
@@ -889,6 +799,8 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
trb->ctrl |= DWC3_TRB_CTRL_SID_SOFN(req->request.stream_id);
trb->ctrl |= DWC3_TRB_CTRL_HWO;
+
+ trace_dwc3_prepare_trb(dep, trb);
}
/*
@@ -1225,16 +1137,18 @@ static int dwc3_gadget_ep_queue(struct usb_ep *ep, struct usb_request *request,
int ret;
+ spin_lock_irqsave(&dwc->lock, flags);
if (!dep->endpoint.desc) {
dev_dbg(dwc->dev, "trying to queue request %p to disabled %s\n",
request, ep->name);
+ spin_unlock_irqrestore(&dwc->lock, flags);
return -ESHUTDOWN;
}
dev_vdbg(dwc->dev, "queing request %p to %s length %d\n",
request, ep->name, request->length);
+ trace_dwc3_ep_queue(req);
- spin_lock_irqsave(&dwc->lock, flags);
ret = __dwc3_gadget_ep_queue(dep, req);
spin_unlock_irqrestore(&dwc->lock, flags);
@@ -1253,6 +1167,8 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep,
unsigned long flags;
int ret = 0;
+ trace_dwc3_ep_dequeue(req);
+
spin_lock_irqsave(&dwc->lock, flags);
list_for_each_entry(r, &dep->request_list, list) {
@@ -1743,11 +1659,8 @@ static int dwc3_gadget_init_hw_endpoints(struct dwc3 *dwc,
u8 epnum = (i << 1) | (!!direction);
dep = kzalloc(sizeof(*dep), GFP_KERNEL);
- if (!dep) {
- dev_err(dwc->dev, "can't allocate endpoint %d\n",
- epnum);
+ if (!dep)
return -ENOMEM;
- }
dep->dwc = dwc;
dep->number = epnum;
@@ -1846,6 +1759,8 @@ static int __dwc3_cleanup_done_trbs(struct dwc3 *dwc, struct dwc3_ep *dep,
unsigned int s_pkt = 0;
unsigned int trb_status;
+ trace_dwc3_complete_trb(dep, trb);
+
if ((trb->ctrl & DWC3_TRB_CTRL_HWO) && status != -ESHUTDOWN)
/*
* We continue despite the error. There is not much we
@@ -2020,9 +1935,6 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
if (!(dep->flags & DWC3_EP_ENABLED))
return;
- dev_vdbg(dwc->dev, "%s: %s\n", dep->name,
- dwc3_ep_event_string(event->endpoint_event));
-
if (epnum == 0 || epnum == 1) {
dwc3_ep0_interrupt(dwc, event);
return;
@@ -2041,12 +1953,6 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
dwc3_endpoint_transfer_complete(dwc, dep, event);
break;
case DWC3_DEPEVT_XFERINPROGRESS:
- if (!usb_endpoint_xfer_isoc(dep->endpoint.desc)) {
- dev_dbg(dwc->dev, "%s is not an Isochronous endpoint\n",
- dep->name);
- return;
- }
-
dwc3_endpoint_transfer_complete(dwc, dep, event);
break;
case DWC3_DEPEVT_XFERNOTREADY:
@@ -2215,8 +2121,6 @@ static void dwc3_gadget_disconnect_interrupt(struct dwc3 *dwc)
{
int reg;
- dev_vdbg(dwc->dev, "%s\n", __func__);
-
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
reg &= ~DWC3_DCTL_INITU1ENA;
dwc3_writel(dwc->regs, DWC3_DCTL, reg);
@@ -2235,8 +2139,6 @@ static void dwc3_gadget_reset_interrupt(struct dwc3 *dwc)
{
u32 reg;
- dev_vdbg(dwc->dev, "%s\n", __func__);
-
/*
* WORKAROUND: DWC3 revisions <1.88a have an issue which
* would cause a missing Disconnect Event if there's a
@@ -2321,8 +2223,6 @@ static void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc)
u32 reg;
u8 speed;
- dev_vdbg(dwc->dev, "%s\n", __func__);
-
reg = dwc3_readl(dwc->regs, DWC3_DSTS);
speed = reg & DWC3_DSTS_CONNECTSPD;
dwc->speed = speed;
@@ -2420,8 +2320,6 @@ static void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc)
static void dwc3_gadget_wakeup_interrupt(struct dwc3 *dwc)
{
- dev_vdbg(dwc->dev, "%s\n", __func__);
-
/*
* TODO take core out of low power mode when that's
* implemented.
@@ -2526,10 +2424,6 @@ static void dwc3_gadget_linksts_change_interrupt(struct dwc3 *dwc,
break;
}
- dev_vdbg(dwc->dev, "link change: %s [%d] -> %s [%d]\n",
- dwc3_gadget_link_string(dwc->link_state),
- dwc->link_state, dwc3_gadget_link_string(next), next);
-
dwc->link_state = next;
}
@@ -2606,6 +2500,8 @@ static void dwc3_gadget_interrupt(struct dwc3 *dwc,
static void dwc3_process_event_entry(struct dwc3 *dwc,
const union dwc3_event *event)
{
+ trace_dwc3_event(event->raw);
+
/* Endpoint IRQ, handle it and return early */
if (event->type.is_devspec == 0) {
/* depevt */
@@ -2759,7 +2655,6 @@ int dwc3_gadget_init(struct dwc3 *dwc)
dwc->setup_buf = kzalloc(DWC3_EP0_BOUNCE_SIZE, GFP_KERNEL);
if (!dwc->setup_buf) {
- dev_err(dwc->dev, "failed to allocate setup buffer\n");
ret = -ENOMEM;
goto err2;
}
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-30 15:42:42 +0000