@@ -1,5 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
# define_trace.h needs to know how to find our header
+CFLAGS_cdns2-trace.o := -I$(src)
obj-$(CONFIG_USB_CDNS2_UDC) += cdns2-udc-pci.o
cdns2-udc-pci-$(CONFIG_USB_CDNS2_UDC) += cdns2-pci.o cdns2-gadget.o cdns2-ep0.o
+cdns2-udc-pci-$(CONFIG_TRACING) += cdns2-trace.o
new file mode 100644
@@ -0,0 +1,203 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Cadence USBHS-DEV Driver.
+ * Debug header file.
+ *
+ * Copyright (C) 2023 Cadence.
+ *
+ * Author: Pawel Laszczak <pawell@cadence.com>
+ */
+
+#ifndef __LINUX_CDNS2_DEBUG
+#define __LINUX_CDNS2_DEBUG
+
+static inline const char *cdns2_decode_usb_irq(char *str, size_t size,
+ u8 usb_irq, u8 ext_irq)
+{
+ int ret;
+
+ ret = snprintf(str, size, "usbirq: 0x%02x - ", usb_irq);
+
+ if (usb_irq & USBIRQ_SOF)
+ ret += snprintf(str + ret, size - ret, "SOF ");
+ if (usb_irq & USBIRQ_SUTOK)
+ ret += snprintf(str + ret, size - ret, "SUTOK ");
+ if (usb_irq & USBIRQ_SUDAV)
+ ret += snprintf(str + ret, size - ret, "SETUP ");
+ if (usb_irq & USBIRQ_SUSPEND)
+ ret += snprintf(str + ret, size - ret, "Suspend ");
+ if (usb_irq & USBIRQ_URESET)
+ ret += snprintf(str + ret, size - ret, "Reset ");
+ if (usb_irq & USBIRQ_HSPEED)
+ ret += snprintf(str + ret, size - ret, "HS ");
+ if (usb_irq & USBIRQ_LPM)
+ ret += snprintf(str + ret, size - ret, "LPM ");
+
+ ret += snprintf(str + ret, size - ret, ", EXT: 0x%02x - ", ext_irq);
+
+ if (ext_irq & EXTIRQ_WAKEUP)
+ ret += snprintf(str + ret, size - ret, "Wakupe ");
+ if (ext_irq & EXTIRQ_VBUSFAULT_FALL)
+ ret += snprintf(str + ret, size - ret, "VBUS_FALL ");
+ if (ext_irq & EXTIRQ_VBUSFAULT_RISE)
+ ret += snprintf(str + ret, size - ret, "VBUS_RISE ");
+
+ if (ret >= size)
+ pr_info("CDNS2: buffer overflowed.\n");
+
+ return str;
+}
+
+static inline const char *cdns2_decode_dma_irq(char *str, size_t size,
+ u32 ep_ists, u32 ep_sts,
+ const char *ep_name)
+{
+ int ret;
+
+ ret = snprintf(str, size, "ISTS: %08x, %s: %08x ",
+ ep_ists, ep_name, ep_sts);
+
+ if (ep_sts & DMA_EP_STS_IOC)
+ ret += snprintf(str + ret, size - ret, "IOC ");
+ if (ep_sts & DMA_EP_STS_ISP)
+ ret += snprintf(str + ret, size - ret, "ISP ");
+ if (ep_sts & DMA_EP_STS_DESCMIS)
+ ret += snprintf(str + ret, size - ret, "DESCMIS ");
+ if (ep_sts & DMA_EP_STS_TRBERR)
+ ret += snprintf(str + ret, size - ret, "TRBERR ");
+ if (ep_sts & DMA_EP_STS_OUTSMM)
+ ret += snprintf(str + ret, size - ret, "OUTSMM ");
+ if (ep_sts & DMA_EP_STS_ISOERR)
+ ret += snprintf(str + ret, size - ret, "ISOERR ");
+ if (ep_sts & DMA_EP_STS_DBUSY)
+ ret += snprintf(str + ret, size - ret, "DBUSY ");
+ if (DMA_EP_STS_CCS(ep_sts))
+ ret += snprintf(str + ret, size - ret, "CCS ");
+
+ if (ret >= size)
+ pr_info("CDNS2: buffer overflowed.\n");
+
+ return str;
+}
+
+static inline const char *cdns2_decode_epx_irq(char *str, size_t size,
+ char *ep_name, u32 ep_ists,
+ u32 ep_sts)
+{
+ return cdns2_decode_dma_irq(str, size, ep_ists, ep_sts, ep_name);
+}
+
+static inline const char *cdns2_decode_ep0_irq(char *str, size_t size,
+ u32 ep_ists, u32 ep_sts,
+ int dir)
+{
+ return cdns2_decode_dma_irq(str, size, ep_ists, ep_sts,
+ dir ? "ep0IN" : "ep0OUT");
+}
+
+static inline const char *cdns2_raw_ring(struct cdns2_endpoint *pep,
+ struct cdns2_trb *trbs,
+ char *str, size_t size)
+{
+ struct cdns2_ring *ring = &pep->ring;
+ struct cdns2_trb *trb;
+ dma_addr_t dma;
+ int ret;
+ int i;
+
+ ret = snprintf(str, size, "\n\t\tTR for %s:", pep->name);
+
+ trb = &trbs[ring->dequeue];
+ dma = cdns2_trb_virt_to_dma(pep, trb);
+ ret += snprintf(str + ret, size - ret,
+ "\n\t\tRing deq index: %d, trb: V=%p, P=0x%pad\n",
+ ring->dequeue, trb, &dma);
+
+ trb = &trbs[ring->enqueue];
+ dma = cdns2_trb_virt_to_dma(pep, trb);
+ ret += snprintf(str + ret, size - ret,
+ "\t\tRing enq index: %d, trb: V=%p, P=0x%pad\n",
+ ring->enqueue, trb, &dma);
+
+ ret += snprintf(str + ret, size - ret,
+ "\t\tfree trbs: %d, CCS=%d, PCS=%d\n",
+ ring->free_trbs, ring->ccs, ring->pcs);
+
+ if (TRBS_PER_SEGMENT > 40) {
+ ret += snprintf(str + ret, size - ret,
+ "\t\tTransfer ring %d too big\n", TRBS_PER_SEGMENT);
+ return str;
+ }
+
+ dma = ring->dma;
+ for (i = 0; i < TRBS_PER_SEGMENT; ++i) {
+ trb = &trbs[i];
+ ret += snprintf(str + ret, size - ret,
+ "\t\t@%pad %08x %08x %08x\n", &dma,
+ le32_to_cpu(trb->buffer),
+ le32_to_cpu(trb->length),
+ le32_to_cpu(trb->control));
+ dma += sizeof(*trb);
+ }
+
+ if (ret >= size)
+ pr_info("CDNS2: buffer overflowed.\n");
+
+ return str;
+}
+
+static inline const char *cdns2_trb_type_string(u8 type)
+{
+ switch (type) {
+ case TRB_NORMAL:
+ return "Normal";
+ case TRB_LINK:
+ return "Link";
+ default:
+ return "UNKNOWN";
+ }
+}
+
+static inline const char *cdns2_decode_trb(char *str, size_t size, u32 flags,
+ u32 length, u32 buffer)
+{
+ int type = TRB_FIELD_TO_TYPE(flags);
+ int ret;
+
+ switch (type) {
+ case TRB_LINK:
+ ret = snprintf(str, size,
+ "LINK %08x type '%s' flags %c:%c:%c%c:%c",
+ buffer, cdns2_trb_type_string(type),
+ flags & TRB_CYCLE ? 'C' : 'c',
+ flags & TRB_TOGGLE ? 'T' : 't',
+ flags & TRB_CHAIN ? 'C' : 'c',
+ flags & TRB_CHAIN ? 'H' : 'h',
+ flags & TRB_IOC ? 'I' : 'i');
+ break;
+ case TRB_NORMAL:
+ ret = snprintf(str, size,
+ "type: '%s', Buffer: %08x, length: %ld, burst len: %ld, "
+ "flags %c:%c:%c%c:%c",
+ cdns2_trb_type_string(type),
+ buffer, TRB_LEN(length),
+ TRB_FIELD_TO_BURST(length),
+ flags & TRB_CYCLE ? 'C' : 'c',
+ flags & TRB_ISP ? 'I' : 'i',
+ flags & TRB_CHAIN ? 'C' : 'c',
+ flags & TRB_CHAIN ? 'H' : 'h',
+ flags & TRB_IOC ? 'I' : 'i');
+ break;
+ default:
+ ret = snprintf(str, size, "type '%s' -> raw %08x %08x %08x",
+ cdns2_trb_type_string(type),
+ buffer, length, flags);
+ }
+
+ if (ret >= size)
+ pr_info("CDNS2: buffer overflowed.\n");
+
+ return str;
+}
+
+#endif /*__LINUX_CDNS2_DEBUG*/
@@ -10,6 +10,7 @@
#include <linux/usb/composite.h>
#include "cdns2-gadget.h"
+#include "cdns2-trace.h"
static struct usb_endpoint_descriptor cdns2_gadget_ep0_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
@@ -59,6 +60,8 @@ static void cdns2_ep0_enqueue(struct cdns2_device *pdev, dma_addr_t dma_addr,
ring->trbs[1].control = 0;
}
+ trace_cdns2_queue_trb(pep, ring->trbs);
+
if (!pep->dir)
writel(0, &pdev->ep0_regs->rxbc);
@@ -67,6 +70,8 @@ static void cdns2_ep0_enqueue(struct cdns2_device *pdev, dma_addr_t dma_addr,
writel(DMA_EP_STS_TRBERR, ®s->ep_sts);
writel(pep->ring.dma, ®s->ep_traddr);
+ trace_cdns2_doorbell_ep0(pep, readl(®s->ep_traddr));
+
writel(DMA_EP_CMD_DRDY, ®s->ep_cmd);
}
@@ -127,6 +132,8 @@ static int cdns2_req_ep0_set_configuration(struct cdns2_device *pdev,
if (ret)
return ret;
+ trace_cdns2_device_state(config ? "configured" : "addressed");
+
if (!config)
usb_gadget_set_state(&pdev->gadget, USB_STATE_ADDRESS);
@@ -157,6 +164,8 @@ static int cdns2_req_ep0_set_address(struct cdns2_device *pdev, u32 addr)
usb_gadget_set_state(&pdev->gadget,
(addr ? USB_STATE_ADDRESS : USB_STATE_DEFAULT));
+ trace_cdns2_device_state(addr ? "addressed" : "default");
+
return 0;
}
@@ -386,8 +395,12 @@ void cdns2_handle_setup_packet(struct cdns2_device *pdev)
* If SETUP packet was modified while reading just simple ignore it.
* The new one will be handled latter.
*/
- if (cdns2_check_new_setup(pdev))
+ if (cdns2_check_new_setup(pdev)) {
+ trace_cdns2_ep0_setup("overridden");
return;
+ }
+
+ trace_cdns2_ctrl_req(ctrl);
if (!pdev->gadget_driver)
goto out;
@@ -432,8 +445,10 @@ void cdns2_handle_setup_packet(struct cdns2_device *pdev)
else
ret = cdns2_ep0_delegate_req(pdev);
- if (ret == USB_GADGET_DELAYED_STATUS)
+ if (ret == USB_GADGET_DELAYED_STATUS) {
+ trace_cdns2_ep0_status_stage("delayed");
return;
+ }
out:
if (ret < 0)
@@ -449,6 +464,7 @@ static void cdns2_transfer_completed(struct cdns2_device *pdev)
if (!list_empty(&pep->pending_list)) {
struct cdns2_request *preq;
+ trace_cdns2_complete_trb(pep, pep->ring.trbs);
preq = cdns2_next_preq(&pep->pending_list);
preq->request.actual =
@@ -465,6 +481,8 @@ void cdns2_handle_ep0_interrupt(struct cdns2_device *pdev, int dir)
cdns2_select_ep(pdev, dir);
+ trace_cdns2_ep0_irq(pdev);
+
ep_sts_reg = readl(&pdev->adma_regs->ep_sts);
writel(ep_sts_reg, &pdev->adma_regs->ep_sts);
@@ -531,8 +549,11 @@ static int cdns2_gadget_ep0_queue(struct usb_ep *ep,
preq = to_cdns2_request(request);
+ trace_cdns2_request_enqueue(preq);
+
/* Cancel the request if controller receive new SETUP packet. */
if (cdns2_check_new_setup(pdev)) {
+ trace_cdns2_ep0_setup("overridden");
spin_unlock_irqrestore(&pdev->lock, flags);
return -ECONNRESET;
}
@@ -557,6 +578,7 @@ static int cdns2_gadget_ep0_queue(struct usb_ep *ep,
}
if (!list_empty(&pep->pending_list)) {
+ trace_cdns2_ep0_setup("pending");
dev_err(pdev->dev,
"can't handle multiple requests for ep0\n");
spin_unlock_irqrestore(&pdev->lock, flags);
@@ -33,6 +33,7 @@
#include <linux/iopoll.h>
#include "cdns2-gadget.h"
+#include "cdns2-trace.h"
/**
* set_reg_bit_32 - set bit in given 32 bits register.
@@ -154,6 +155,8 @@ static void cdns2_ep_stall_flush(struct cdns2_endpoint *pep)
struct cdns2_device *pdev = pep->pdev;
int val;
+ trace_cdns2_ep_halt(pep, 1, 1);
+
writel(DMA_EP_CMD_DFLUSH, &pdev->adma_regs->ep_cmd);
/* Wait for DFLUSH cleared. */
@@ -247,6 +250,8 @@ void cdns2_gadget_giveback(struct cdns2_endpoint *pep,
/* All TRBs have finished, clear the counter. */
preq->finished_trb = 0;
+ trace_cdns2_request_giveback(preq);
+
if (request->complete) {
spin_unlock(&pdev->lock);
usb_gadget_giveback_request(&pep->endpoint, request);
@@ -261,6 +266,8 @@ static void cdns2_wa1_restore_cycle_bit(struct cdns2_endpoint *pep)
{
/* Work around for stale data address in TRB. */
if (pep->wa1_set) {
+ trace_cdns2_wa1(pep, "restore cycle bit");
+
pep->wa1_set = 0;
pep->wa1_trb_index = 0xFFFF;
if (pep->wa1_cycle_bit)
@@ -285,6 +292,7 @@ static int cdns2_wa1_update_guard(struct cdns2_endpoint *pep,
pep->wa1_set = 1;
pep->wa1_trb = trb;
pep->wa1_trb_index = pep->ring.enqueue;
+ trace_cdns2_wa1(pep, "set guard");
return 0;
}
}
@@ -317,6 +325,7 @@ static int cdns2_prepare_ring(struct cdns2_device *pdev,
if (num_trbs > ring->free_trbs) {
pep->ep_state |= EP_RING_FULL;
+ trace_cdns2_no_room_on_ring("Ring full\n");
return -ENOBUFS;
}
@@ -360,6 +369,7 @@ static void cdns2_dbg_request_trbs(struct cdns2_endpoint *pep,
int i = 0;
while (i < num_trbs) {
+ trace_cdns2_queue_trb(pep, trb + i);
if (trb + i == link_trb) {
trb = pep->ring.trbs;
num_trbs = num_trbs - i;
@@ -678,6 +688,8 @@ static void cdns2_ep_tx_bulk(struct cdns2_endpoint *pep,
static void cdns2_set_drdy(struct cdns2_device *pdev,
struct cdns2_endpoint *pep)
{
+ trace_cdns2_ring(pep);
+
/*
* Memory barrier - Cycle Bit must be set before doorbell.
*/
@@ -692,6 +704,8 @@ static void cdns2_set_drdy(struct cdns2_device *pdev,
writel(DMA_EP_STS_TRBERR, &pdev->adma_regs->ep_sts);
writel(DMA_EP_CMD_DRDY, &pdev->adma_regs->ep_cmd);
}
+
+ trace_cdns2_doorbell_epx(pep, readl(&pdev->adma_regs->ep_traddr));
}
static int cdns2_prepare_first_isoc_transfer(struct cdns2_device *pdev,
@@ -927,6 +941,7 @@ static bool cdns2_trb_handled(struct cdns2_endpoint *pep,
}
finish:
+ trace_cdns2_request_handled(preq, current_index, handled);
return handled;
}
@@ -942,6 +957,7 @@ static void cdns2_skip_isoc_td(struct cdns2_device *pdev,
for (i = preq->finished_trb ; i < preq->num_of_trb; i++) {
preq->finished_trb++;
+ trace_cdns2_complete_trb(pep, trb);
cdns2_ep_inc_deq(&pep->ring);
trb = cdns2_next_trb(pep, trb);
}
@@ -969,6 +985,7 @@ static void cdns2_transfer_completed(struct cdns2_device *pdev,
*/
while (TRB_FIELD_TO_TYPE(le32_to_cpu(trb->control)) == TRB_LINK &&
le32_to_cpu(trb->length)) {
+ trace_cdns2_complete_trb(pep, trb);
cdns2_ep_inc_deq(&pep->ring);
trb = pep->ring.trbs + pep->ring.dequeue;
}
@@ -986,6 +1003,7 @@ static void cdns2_transfer_completed(struct cdns2_device *pdev,
request_handled = true;
trb = pep->ring.trbs + pep->ring.dequeue;
+ trace_cdns2_complete_trb(pep, trb);
if (pep->dir && pep->type == USB_ENDPOINT_XFER_ISOC)
/*
@@ -1037,12 +1055,17 @@ static void cdns2_rearm_transfer(struct cdns2_endpoint *pep, u8 rearm)
cdns2_wa1_restore_cycle_bit(pep);
if (rearm) {
+ trace_cdns2_ring(pep);
+
/* Cycle Bit must be updated before arming DMA. */
wmb();
writel(DMA_EP_CMD_DRDY, &pdev->adma_regs->ep_cmd);
cdns2_wakeup(pdev);
+
+ trace_cdns2_doorbell_epx(pep,
+ readl(&pdev->adma_regs->ep_traddr));
}
}
@@ -1055,6 +1078,8 @@ static void cdns2_handle_epx_interrupt(struct cdns2_endpoint *pep)
cdns2_select_ep(pdev, pep->endpoint.address);
+ trace_cdns2_epx_irq(pdev, pep);
+
ep_sts_reg = readl(&pdev->adma_regs->ep_sts);
writel(ep_sts_reg, &pdev->adma_regs->ep_sts);
@@ -1197,6 +1222,8 @@ static irqreturn_t cdns2_thread_usb_irq_handler(struct cdns2_device *pdev)
if (!ext_irq && !usb_irq)
return IRQ_NONE;
+ trace_cdns2_usb_irq(usb_irq, ext_irq);
+
if (ext_irq & EXTIRQ_WAKEUP) {
if (pdev->gadget_driver && pdev->gadget_driver->resume) {
spin_unlock(&pdev->lock);
@@ -1275,6 +1302,8 @@ static irqreturn_t cdns2_thread_irq_handler(int irq, void *data)
if (!dma_ep_ists)
goto unlock;
+ trace_cdns2_dma_ep_ists(dma_ep_ists);
+
/* Handle default endpoint OUT. */
if (dma_ep_ists & DMA_EP_ISTS_EP_OUT0)
cdns2_handle_ep0_interrupt(pdev, USB_DIR_OUT);
@@ -1462,6 +1491,8 @@ static int cdns2_ep_config(struct cdns2_endpoint *pep, bool enable)
if (enable)
writel(DMA_EP_CFG_ENABLE, &pdev->adma_regs->ep_cfg);
+ trace_cdns2_epx_hw_cfg(pdev, pep);
+
dev_dbg(pdev->dev, "Configure %s: with MPS: %08x, ep con: %02x\n",
pep->name, max_packet_size, ep_cfg);
@@ -1480,6 +1511,8 @@ struct usb_request *cdns2_gadget_ep_alloc_request(struct usb_ep *ep,
preq->pep = pep;
+ trace_cdns2_alloc_request(preq);
+
return &preq->request;
}
@@ -1488,6 +1521,7 @@ void cdns2_gadget_ep_free_request(struct usb_ep *ep,
{
struct cdns2_request *preq = to_cdns2_request(request);
+ trace_cdns2_free_request(preq);
kfree(preq);
}
@@ -1553,6 +1587,8 @@ static int cdns2_gadget_ep_enable(struct usb_ep *ep,
goto exit;
}
+ trace_cdns2_gadget_ep_enable(pep);
+
pep->ep_state &= ~(EP_STALLED | EP_STALL_PENDING);
pep->ep_state |= EP_ENABLED;
pep->wa1_set = 0;
@@ -1593,6 +1629,8 @@ static int cdns2_gadget_ep_disable(struct usb_ep *ep)
spin_lock_irqsave(&pdev->lock, flags);
+ trace_cdns2_gadget_ep_disable(pep);
+
cdns2_select_ep(pdev, ep->desc->bEndpointAddress);
clear_reg_bit_32(&pdev->adma_regs->ep_cfg, DMA_EP_CFG_ENABLE);
@@ -1641,10 +1679,13 @@ static int cdns2_ep_enqueue(struct cdns2_endpoint *pep,
request->status = -EINPROGRESS;
ret = usb_gadget_map_request_by_dev(pdev->dev, request, pep->dir);
- if (ret)
+ if (ret) {
+ trace_cdns2_request_enqueue_error(preq);
return ret;
+ }
list_add_tail(&preq->list, &pep->deferred_list);
+ trace_cdns2_request_enqueue(preq);
if (!(pep->ep_state & EP_STALLED) && !(pep->ep_state & EP_STALL_PENDING))
cdns2_start_all_request(pdev, pep);
@@ -1724,6 +1765,7 @@ int cdns2_gadget_ep_dequeue(struct usb_ep *ep,
spin_lock_irqsave(&pep->pdev->lock, flags);
cur_preq = to_cdns2_request(request);
+ trace_cdns2_request_dequeue(cur_preq);
list_for_each_entry_safe(preq, preq_temp, &pep->pending_list, list) {
if (cur_preq == preq) {
@@ -1760,6 +1802,7 @@ int cdns2_gadget_ep_dequeue(struct usb_ep *ep,
& TRB_CYCLE) | TRB_CHAIN |
TRB_TYPE(TRB_LINK));
+ trace_cdns2_queue_trb(pep, link_trb);
link_trb = cdns2_next_trb(pep, link_trb);
}
@@ -1809,6 +1852,8 @@ int cdns2_halt_endpoint(struct cdns2_device *pdev,
}
}
+ trace_cdns2_ep_halt(pep, 0, 0);
+
/* Resets Sequence Number */
writeb(dir | pep->num, &pdev->epx_regs->endprst);
writeb(dir | ENDPRST_TOGRST | pep->num,
@@ -1827,6 +1872,7 @@ int cdns2_halt_endpoint(struct cdns2_device *pdev,
cdns2_start_all_request(pdev, pep);
} else {
+ trace_cdns2_ep_halt(pep, 1, 0);
set_reg_bit_8(conf, EPX_CON_STALL);
writeb(dir | pep->num, &pdev->epx_regs->endprst);
writeb(dir | ENDPRST_FIFORST | pep->num,
@@ -1850,6 +1896,7 @@ static int cdns2_gadget_ep_set_halt(struct usb_ep *ep, int value)
preq = cdns2_next_preq(&pep->pending_list);
if (value && preq) {
+ trace_cdns2_ep_busy_try_halt_again(pep);
ret = -EAGAIN;
goto done;
}
@@ -2013,6 +2060,8 @@ static int cdns2_gadget_pullup(struct usb_gadget *gadget, int is_on)
struct cdns2_device *pdev = gadget_to_cdns2_device(gadget);
unsigned long flags;
+ trace_cdns2_pullup(is_on);
+
/*
* Disable events handling while controller is being
* enabled/disabled.
@@ -2338,6 +2387,7 @@ int cdns2_gadget_suspend(struct cdns2_device *pdev)
spin_lock_irqsave(&pdev->lock, flags);
pdev->gadget.speed = USB_SPEED_UNKNOWN;
+ trace_cdns2_device_state("notattached");
usb_gadget_set_state(&pdev->gadget, USB_STATE_NOTATTACHED);
cdns2_enable_l1(pdev, 0);
new file mode 100644
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * USBHS device controller driver Trace Support
+ *
+ * Copyright (C) 2023 Cadence.
+ *
+ * Author: Pawel Laszczak <pawell@cadence.com>
+ */
+
+#define CREATE_TRACE_POINTS
+#include "cdns2-trace.h"
new file mode 100644
@@ -0,0 +1,605 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * USBHS-DEV device controller driver.
+ * Trace support header file.
+ *
+ * Copyright (C) 2023 Cadence.
+ *
+ * Author: Pawel Laszczak <pawell@cadence.com>
+ */
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM cdns2-dev
+
+/*
+ * The TRACE_SYSTEM_VAR defaults to TRACE_SYSTEM, but must be a
+ * legitimate C variable. It is not exported to user space.
+ */
+#undef TRACE_SYSTEM_VAR
+#define TRACE_SYSTEM_VAR cdns2_dev
+
+#if !defined(__LINUX_CDNS2_TRACE) || defined(TRACE_HEADER_MULTI_READ)
+#define __LINUX_CDNS2_TRACE
+
+#include <linux/types.h>
+#include <linux/tracepoint.h>
+#include <asm/byteorder.h>
+#include <linux/usb/ch9.h>
+#include "cdns2-gadget.h"
+#include "cdns2-debug.h"
+
+#define CDNS2_MSG_MAX 500
+
+DECLARE_EVENT_CLASS(cdns2_log_enable_disable,
+ TP_PROTO(int set),
+ TP_ARGS(set),
+ TP_STRUCT__entry(
+ __field(int, set)
+ ),
+ TP_fast_assign(
+ __entry->set = set;
+ ),
+ TP_printk("%s", __entry->set ? "enabled" : "disabled")
+);
+
+DEFINE_EVENT(cdns2_log_enable_disable, cdns2_pullup,
+ TP_PROTO(int set),
+ TP_ARGS(set)
+);
+
+DEFINE_EVENT(cdns2_log_enable_disable, cdns2_lpm,
+ TP_PROTO(int set),
+ TP_ARGS(set)
+);
+
+DEFINE_EVENT(cdns2_log_enable_disable, cdns2_may_wakeup,
+ TP_PROTO(int set),
+ TP_ARGS(set)
+);
+
+DECLARE_EVENT_CLASS(cdns2_log_simple,
+ TP_PROTO(char *msg),
+ TP_ARGS(msg),
+ TP_STRUCT__entry(
+ __string(text, msg)
+ ),
+ TP_fast_assign(
+ __assign_str(text, msg);
+ ),
+ TP_printk("%s", __get_str(text))
+);
+
+DEFINE_EVENT(cdns2_log_simple, cdns2_no_room_on_ring,
+ TP_PROTO(char *msg),
+ TP_ARGS(msg)
+);
+
+DEFINE_EVENT(cdns2_log_simple, cdns2_ep0_status_stage,
+ TP_PROTO(char *msg),
+ TP_ARGS(msg)
+);
+
+DEFINE_EVENT(cdns2_log_simple, cdns2_ep0_set_config,
+ TP_PROTO(char *msg),
+ TP_ARGS(msg)
+);
+
+DEFINE_EVENT(cdns2_log_simple, cdns2_ep0_setup,
+ TP_PROTO(char *msg),
+ TP_ARGS(msg)
+);
+
+DEFINE_EVENT(cdns2_log_simple, cdns2_device_state,
+ TP_PROTO(char *msg),
+ TP_ARGS(msg)
+);
+
+TRACE_EVENT(cdns2_ep_halt,
+ TP_PROTO(struct cdns2_endpoint *ep_priv, u8 halt, u8 flush),
+ TP_ARGS(ep_priv, halt, flush),
+ TP_STRUCT__entry(
+ __string(name, ep_priv->name)
+ __field(u8, halt)
+ __field(u8, flush)
+ ),
+ TP_fast_assign(
+ __assign_str(name, ep_priv->name);
+ __entry->halt = halt;
+ __entry->flush = flush;
+ ),
+ TP_printk("Halt %s for %s: %s", __entry->flush ? " and flush" : "",
+ __get_str(name), __entry->halt ? "set" : "cleared")
+);
+
+TRACE_EVENT(cdns2_wa1,
+ TP_PROTO(struct cdns2_endpoint *ep_priv, char *msg),
+ TP_ARGS(ep_priv, msg),
+ TP_STRUCT__entry(
+ __string(ep_name, ep_priv->name)
+ __string(msg, msg)
+ ),
+ TP_fast_assign(
+ __assign_str(ep_name, ep_priv->name);
+ __assign_str(msg, msg);
+ ),
+ TP_printk("WA1: %s %s", __get_str(ep_name), __get_str(msg))
+);
+
+DECLARE_EVENT_CLASS(cdns2_log_doorbell,
+ TP_PROTO(struct cdns2_endpoint *pep, u32 ep_trbaddr),
+ TP_ARGS(pep, ep_trbaddr),
+ TP_STRUCT__entry(
+ __string(name, pep->num ? pep->name :
+ (pep->dir ? "ep0in" : "ep0out"))
+ __field(u32, ep_trbaddr)
+ ),
+ TP_fast_assign(
+ __assign_str(name, pep->name);
+ __entry->ep_trbaddr = ep_trbaddr;
+ ),
+ TP_printk("%s, ep_trbaddr %08x", __get_str(name),
+ __entry->ep_trbaddr)
+);
+
+DEFINE_EVENT(cdns2_log_doorbell, cdns2_doorbell_ep0,
+ TP_PROTO(struct cdns2_endpoint *pep, u32 ep_trbaddr),
+ TP_ARGS(pep, ep_trbaddr)
+);
+
+DEFINE_EVENT(cdns2_log_doorbell, cdns2_doorbell_epx,
+ TP_PROTO(struct cdns2_endpoint *pep, u32 ep_trbaddr),
+ TP_ARGS(pep, ep_trbaddr)
+);
+
+DECLARE_EVENT_CLASS(cdns2_log_usb_irq,
+ TP_PROTO(u32 usb_irq, u32 ext_irq),
+ TP_ARGS(usb_irq, ext_irq),
+ TP_STRUCT__entry(
+ __field(u32, usb_irq)
+ __field(u32, ext_irq)
+ ),
+ TP_fast_assign(
+ __entry->usb_irq = usb_irq;
+ __entry->ext_irq = ext_irq;
+ ),
+ TP_printk("%s", cdns2_decode_usb_irq(__get_buf(CDNS2_MSG_MAX),
+ CDNS2_MSG_MAX,
+ __entry->usb_irq,
+ __entry->ext_irq))
+);
+
+DEFINE_EVENT(cdns2_log_usb_irq, cdns2_usb_irq,
+ TP_PROTO(u32 usb_irq, u32 ext_irq),
+ TP_ARGS(usb_irq, ext_irq)
+);
+
+TRACE_EVENT(cdns2_dma_ep_ists,
+ TP_PROTO(u32 dma_ep_ists),
+ TP_ARGS(dma_ep_ists),
+ TP_STRUCT__entry(
+ __field(u32, dma_ep_ists)
+ ),
+ TP_fast_assign(
+ __entry->dma_ep_ists = dma_ep_ists;
+ ),
+ TP_printk("OUT: 0x%04x, IN: 0x%04x", (u16)__entry->dma_ep_ists,
+ __entry->dma_ep_ists >> 16)
+);
+
+DECLARE_EVENT_CLASS(cdns2_log_epx_irq,
+ TP_PROTO(struct cdns2_device *pdev, struct cdns2_endpoint *pep),
+ TP_ARGS(pdev, pep),
+ TP_STRUCT__entry(
+ __string(ep_name, pep->name)
+ __field(u32, ep_sts)
+ __field(u32, ep_ists)
+ __field(u32, ep_traddr)
+ ),
+ TP_fast_assign(
+ __assign_str(ep_name, pep->name);
+ __entry->ep_sts = readl(&pdev->adma_regs->ep_sts);
+ __entry->ep_ists = readl(&pdev->adma_regs->ep_ists);
+ __entry->ep_traddr = readl(&pdev->adma_regs->ep_traddr);
+ ),
+ TP_printk("%s, ep_traddr: %08x",
+ cdns2_decode_epx_irq(__get_buf(CDNS2_MSG_MAX), CDNS2_MSG_MAX,
+ __get_str(ep_name),
+ __entry->ep_ists, __entry->ep_sts),
+ __entry->ep_traddr)
+);
+
+DEFINE_EVENT(cdns2_log_epx_irq, cdns2_epx_irq,
+ TP_PROTO(struct cdns2_device *pdev, struct cdns2_endpoint *pep),
+ TP_ARGS(pdev, pep)
+);
+
+DECLARE_EVENT_CLASS(cdns2_log_ep0_irq,
+ TP_PROTO(struct cdns2_device *pdev),
+ TP_ARGS(pdev),
+ TP_STRUCT__entry(
+ __field(int, ep_dir)
+ __field(u32, ep_ists)
+ __field(u32, ep_sts)
+ ),
+ TP_fast_assign(
+ __entry->ep_dir = pdev->selected_ep;
+ __entry->ep_ists = readl(&pdev->adma_regs->ep_ists);
+ __entry->ep_sts = readl(&pdev->adma_regs->ep_sts);
+ ),
+ TP_printk("%s", cdns2_decode_ep0_irq(__get_buf(CDNS2_MSG_MAX),
+ CDNS2_MSG_MAX,
+ __entry->ep_ists, __entry->ep_sts,
+ __entry->ep_dir))
+);
+
+DEFINE_EVENT(cdns2_log_ep0_irq, cdns2_ep0_irq,
+ TP_PROTO(struct cdns2_device *pdev),
+ TP_ARGS(pdev)
+);
+
+DECLARE_EVENT_CLASS(cdns2_log_ctrl,
+ TP_PROTO(struct usb_ctrlrequest *ctrl),
+ TP_ARGS(ctrl),
+ TP_STRUCT__entry(
+ __field(u8, bRequestType)
+ __field(u8, bRequest)
+ __field(u16, wValue)
+ __field(u16, wIndex)
+ __field(u16, wLength)
+ ),
+ TP_fast_assign(
+ __entry->bRequestType = ctrl->bRequestType;
+ __entry->bRequest = ctrl->bRequest;
+ __entry->wValue = le16_to_cpu(ctrl->wValue);
+ __entry->wIndex = le16_to_cpu(ctrl->wIndex);
+ __entry->wLength = le16_to_cpu(ctrl->wLength);
+ ),
+ TP_printk("%s", usb_decode_ctrl(__get_buf(CDNS2_MSG_MAX), CDNS2_MSG_MAX,
+ __entry->bRequestType,
+ __entry->bRequest, __entry->wValue,
+ __entry->wIndex, __entry->wLength)
+ )
+);
+
+DEFINE_EVENT(cdns2_log_ctrl, cdns2_ctrl_req,
+ TP_PROTO(struct usb_ctrlrequest *ctrl),
+ TP_ARGS(ctrl)
+);
+
+DECLARE_EVENT_CLASS(cdns2_log_request,
+ TP_PROTO(struct cdns2_request *preq),
+ TP_ARGS(preq),
+ TP_STRUCT__entry(
+ __string(name, preq->pep->name)
+ __field(struct usb_request *, request)
+ __field(struct cdns2_request *, preq)
+ __field(void *, buf)
+ __field(unsigned int, actual)
+ __field(unsigned int, length)
+ __field(int, status)
+ __field(dma_addr_t, dma)
+ __field(int, zero)
+ __field(int, short_not_ok)
+ __field(int, no_interrupt)
+ __field(struct scatterlist*, sg)
+ __field(unsigned int, num_sgs)
+ __field(unsigned int, num_mapped_sgs)
+ __field(int, start_trb)
+ __field(int, end_trb)
+ ),
+ TP_fast_assign(
+ __assign_str(name, preq->pep->name);
+ __entry->request = &preq->request;
+ __entry->preq = preq;
+ __entry->buf = preq->request.buf;
+ __entry->actual = preq->request.actual;
+ __entry->length = preq->request.length;
+ __entry->status = preq->request.status;
+ __entry->dma = preq->request.dma;
+ __entry->zero = preq->request.zero;
+ __entry->short_not_ok = preq->request.short_not_ok;
+ __entry->no_interrupt = preq->request.no_interrupt;
+ __entry->sg = preq->request.sg;
+ __entry->num_sgs = preq->request.num_sgs;
+ __entry->num_mapped_sgs = preq->request.num_mapped_sgs;
+ __entry->start_trb = preq->start_trb;
+ __entry->end_trb = preq->end_trb;
+ ),
+ TP_printk("%s: req: %p, preq: %p, req buf: %p, length: %u/%u, status: %d,"
+ "buf dma: (%pad), %s%s%s, sg: %p, num_sgs: %d, num_m_sgs: %d,"
+ "trb: [start: %d, end: %d]",
+ __get_str(name), __entry->request, __entry->preq,
+ __entry->buf, __entry->actual, __entry->length,
+ __entry->status, &__entry->dma,
+ __entry->zero ? "Z" : "z",
+ __entry->short_not_ok ? "S" : "s",
+ __entry->no_interrupt ? "I" : "i",
+ __entry->sg, __entry->num_sgs, __entry->num_mapped_sgs,
+ __entry->start_trb,
+ __entry->end_trb
+ )
+);
+
+DEFINE_EVENT(cdns2_log_request, cdns2_request_enqueue,
+ TP_PROTO(struct cdns2_request *preq),
+ TP_ARGS(preq)
+);
+
+DEFINE_EVENT(cdns2_log_request, cdns2_request_enqueue_error,
+ TP_PROTO(struct cdns2_request *preq),
+ TP_ARGS(preq)
+);
+
+DEFINE_EVENT(cdns2_log_request, cdns2_alloc_request,
+ TP_PROTO(struct cdns2_request *preq),
+ TP_ARGS(preq)
+);
+
+DEFINE_EVENT(cdns2_log_request, cdns2_free_request,
+ TP_PROTO(struct cdns2_request *preq),
+ TP_ARGS(preq)
+);
+
+DEFINE_EVENT(cdns2_log_request, cdns2_ep_queue,
+ TP_PROTO(struct cdns2_request *preq),
+ TP_ARGS(preq)
+);
+
+DEFINE_EVENT(cdns2_log_request, cdns2_request_dequeue,
+ TP_PROTO(struct cdns2_request *preq),
+ TP_ARGS(preq)
+);
+
+DEFINE_EVENT(cdns2_log_request, cdns2_request_giveback,
+ TP_PROTO(struct cdns2_request *preq),
+ TP_ARGS(preq)
+);
+
+TRACE_EVENT(cdns2_ep0_enqueue,
+ TP_PROTO(struct cdns2_device *dev_priv, struct usb_request *request),
+ TP_ARGS(dev_priv, request),
+ TP_STRUCT__entry(
+ __field(int, dir)
+ __field(int, length)
+ ),
+ TP_fast_assign(
+ __entry->dir = dev_priv->eps[0].dir;
+ __entry->length = request->length;
+ ),
+ TP_printk("Queue to ep0%s length: %u", __entry->dir ? "in" : "out",
+ __entry->length)
+);
+
+DECLARE_EVENT_CLASS(cdns2_log_map_request,
+ TP_PROTO(struct cdns2_request *priv_req),
+ TP_ARGS(priv_req),
+ TP_STRUCT__entry(
+ __string(name, priv_req->pep->name)
+ __field(struct usb_request *, req)
+ __field(void *, buf)
+ __field(dma_addr_t, dma)
+ ),
+ TP_fast_assign(
+ __assign_str(name, priv_req->pep->name);
+ __entry->req = &priv_req->request;
+ __entry->buf = priv_req->request.buf;
+ __entry->dma = priv_req->request.dma;
+ ),
+ TP_printk("%s: req: %p, req buf %p, dma %p",
+ __get_str(name), __entry->req, __entry->buf, &__entry->dma
+ )
+);
+
+DEFINE_EVENT(cdns2_log_map_request, cdns2_map_request,
+ TP_PROTO(struct cdns2_request *req),
+ TP_ARGS(req)
+);
+DEFINE_EVENT(cdns2_log_map_request, cdns2_mapped_request,
+ TP_PROTO(struct cdns2_request *req),
+ TP_ARGS(req)
+);
+
+DECLARE_EVENT_CLASS(cdns2_log_trb,
+ TP_PROTO(struct cdns2_endpoint *pep, struct cdns2_trb *trb),
+ TP_ARGS(pep, trb),
+ TP_STRUCT__entry(
+ __string(name, pep->name)
+ __field(struct cdns2_trb *, trb)
+ __field(u32, buffer)
+ __field(u32, length)
+ __field(u32, control)
+ __field(u32, type)
+ ),
+ TP_fast_assign(
+ __assign_str(name, pep->name);
+ __entry->trb = trb;
+ __entry->buffer = le32_to_cpu(trb->buffer);
+ __entry->length = le32_to_cpu(trb->length);
+ __entry->control = le32_to_cpu(trb->control);
+ __entry->type = usb_endpoint_type(pep->endpoint.desc);
+ ),
+ TP_printk("%s: trb V: %p, dma buf: P: 0x%08x, %s",
+ __get_str(name), __entry->trb, __entry->buffer,
+ cdns2_decode_trb(__get_buf(CDNS2_MSG_MAX), CDNS2_MSG_MAX,
+ __entry->control, __entry->length,
+ __entry->buffer))
+);
+
+DEFINE_EVENT(cdns2_log_trb, cdns2_queue_trb,
+ TP_PROTO(struct cdns2_endpoint *pep, struct cdns2_trb *trb),
+ TP_ARGS(pep, trb)
+);
+
+DEFINE_EVENT(cdns2_log_trb, cdns2_complete_trb,
+ TP_PROTO(struct cdns2_endpoint *pep, struct cdns2_trb *trb),
+ TP_ARGS(pep, trb)
+);
+
+DECLARE_EVENT_CLASS(cdns2_log_ring,
+ TP_PROTO(struct cdns2_endpoint *pep),
+ TP_ARGS(pep),
+ TP_STRUCT__entry(
+ __dynamic_array(u8, tr_seg, TR_SEG_SIZE)
+ __dynamic_array(u8, pep, sizeof(struct cdns2_endpoint))
+ __dynamic_array(char, buffer,
+ (TRBS_PER_SEGMENT * 65) + CDNS2_MSG_MAX)
+ ),
+ TP_fast_assign(
+ memcpy(__get_dynamic_array(pep), pep,
+ sizeof(struct cdns2_endpoint));
+ memcpy(__get_dynamic_array(tr_seg), pep->ring.trbs,
+ TR_SEG_SIZE);
+ ),
+
+ TP_printk("%s",
+ cdns2_raw_ring((struct cdns2_endpoint *)__get_str(pep),
+ (struct cdns2_trb *)__get_str(tr_seg),
+ __get_str(buffer),
+ (TRBS_PER_SEGMENT * 65) + CDNS2_MSG_MAX))
+);
+
+DEFINE_EVENT(cdns2_log_ring, cdns2_ring,
+ TP_PROTO(struct cdns2_endpoint *pep),
+ TP_ARGS(pep)
+);
+
+DECLARE_EVENT_CLASS(cdns2_log_ep,
+ TP_PROTO(struct cdns2_endpoint *pep),
+ TP_ARGS(pep),
+ TP_STRUCT__entry(
+ __string(name, pep->name)
+ __field(unsigned int, maxpacket)
+ __field(unsigned int, maxpacket_limit)
+ __field(unsigned int, flags)
+ __field(unsigned int, dir)
+ __field(u8, enqueue)
+ __field(u8, dequeue)
+ ),
+ TP_fast_assign(
+ __assign_str(name, pep->name);
+ __entry->maxpacket = pep->endpoint.maxpacket;
+ __entry->maxpacket_limit = pep->endpoint.maxpacket_limit;
+ __entry->flags = pep->ep_state;
+ __entry->dir = pep->dir;
+ __entry->enqueue = pep->ring.enqueue;
+ __entry->dequeue = pep->ring.dequeue;
+ ),
+ TP_printk("%s: mps: %d/%d, enq idx: %d, deq idx: %d, "
+ "flags: %s%s%s%s, dir: %s",
+ __get_str(name), __entry->maxpacket,
+ __entry->maxpacket_limit, __entry->enqueue,
+ __entry->dequeue,
+ __entry->flags & EP_ENABLED ? "EN | " : "",
+ __entry->flags & EP_STALLED ? "STALLED | " : "",
+ __entry->flags & EP_WEDGE ? "WEDGE | " : "",
+ __entry->flags & EP_RING_FULL ? "RING FULL |" : "",
+ __entry->dir ? "IN" : "OUT"
+ )
+);
+
+DEFINE_EVENT(cdns2_log_ep, cdns2_gadget_ep_enable,
+ TP_PROTO(struct cdns2_endpoint *pep),
+ TP_ARGS(pep)
+);
+
+DEFINE_EVENT(cdns2_log_ep, cdns2_gadget_ep_disable,
+ TP_PROTO(struct cdns2_endpoint *pep),
+ TP_ARGS(pep)
+);
+
+DEFINE_EVENT(cdns2_log_ep, cdns2_iso_out_ep_disable,
+ TP_PROTO(struct cdns2_endpoint *pep),
+ TP_ARGS(pep)
+);
+
+DEFINE_EVENT(cdns2_log_ep, cdns2_ep_busy_try_halt_again,
+ TP_PROTO(struct cdns2_endpoint *pep),
+ TP_ARGS(pep)
+);
+
+DECLARE_EVENT_CLASS(cdns2_log_request_handled,
+ TP_PROTO(struct cdns2_request *priv_req, int current_index,
+ int handled),
+ TP_ARGS(priv_req, current_index, handled),
+ TP_STRUCT__entry(
+ __field(struct cdns2_request *, priv_req)
+ __field(unsigned int, dma_position)
+ __field(unsigned int, handled)
+ __field(unsigned int, dequeue_idx)
+ __field(unsigned int, enqueue_idx)
+ __field(unsigned int, start_trb)
+ __field(unsigned int, end_trb)
+ ),
+ TP_fast_assign(
+ __entry->priv_req = priv_req;
+ __entry->dma_position = current_index;
+ __entry->handled = handled;
+ __entry->dequeue_idx = priv_req->pep->ring.dequeue;
+ __entry->enqueue_idx = priv_req->pep->ring.enqueue;
+ __entry->start_trb = priv_req->start_trb;
+ __entry->end_trb = priv_req->end_trb;
+ ),
+ TP_printk("Req: %p %s, DMA pos: %d, ep deq: %d, ep enq: %d,"
+ " start trb: %d, end trb: %d",
+ __entry->priv_req,
+ __entry->handled ? "handled" : "not handled",
+ __entry->dma_position, __entry->dequeue_idx,
+ __entry->enqueue_idx, __entry->start_trb,
+ __entry->end_trb
+ )
+);
+
+DEFINE_EVENT(cdns2_log_request_handled, cdns2_request_handled,
+ TP_PROTO(struct cdns2_request *priv_req, int current_index,
+ int handled),
+ TP_ARGS(priv_req, current_index, handled)
+);
+
+DECLARE_EVENT_CLASS(cdns2_log_epx_reg_config,
+ TP_PROTO(struct cdns2_device *pdev, struct cdns2_endpoint *pep),
+ TP_ARGS(pdev, pep),
+ TP_STRUCT__entry(
+ __string(ep_name, pep->name)
+ __field(u8, burst_size)
+ __field(__le16, maxpack_reg)
+ __field(__u8, con_reg)
+ __field(u32, ep_sel_reg)
+ __field(u32, ep_sts_en_reg)
+ __field(u32, ep_cfg_reg)
+ ),
+ TP_fast_assign(
+ __assign_str(ep_name, pep->name);
+ __entry->burst_size = pep->trb_burst_size;
+ __entry->maxpack_reg = pep->dir ? readw(&pdev->epx_regs->txmaxpack[pep->num - 1]) :
+ readw(&pdev->epx_regs->rxmaxpack[pep->num - 1]);
+ __entry->con_reg = pep->dir ? readb(&pdev->epx_regs->ep[pep->num - 1].txcon) :
+ readb(&pdev->epx_regs->ep[pep->num - 1].rxcon);
+ __entry->ep_sel_reg = readl(&pdev->adma_regs->ep_sel);
+ __entry->ep_sts_en_reg = readl(&pdev->adma_regs->ep_sts_en);
+ __entry->ep_cfg_reg = readl(&pdev->adma_regs->ep_cfg);
+ ),
+
+ TP_printk("%s, maxpack: %d, con: %02x, dma_ep_sel: %08x, dma_ep_sts_en: %08x"
+ " dma_ep_cfg %08x",
+ __get_str(ep_name), __entry->maxpack_reg, __entry->con_reg,
+ __entry->ep_sel_reg, __entry->ep_sts_en_reg,
+ __entry->ep_cfg_reg
+ )
+);
+
+DEFINE_EVENT(cdns2_log_epx_reg_config, cdns2_epx_hw_cfg,
+ TP_PROTO(struct cdns2_device *pdev, struct cdns2_endpoint *pep),
+ TP_ARGS(pdev, pep)
+);
+
+#endif /* __LINUX_CDNS2_TRACE */
+
+/* This part must be outside header guard. */
+
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH .
+
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_FILE cdns2-trace
+
+#include <trace/define_trace.h>
Patch adds the series of tracepoints that can be used for debugging issues detected in driver. Signed-off-by: Pawel Laszczak <pawell@cadence.com> --- drivers/usb/gadget/udc/cdns2/Makefile | 2 + drivers/usb/gadget/udc/cdns2/cdns2-debug.h | 203 +++++++ drivers/usb/gadget/udc/cdns2/cdns2-ep0.c | 26 +- drivers/usb/gadget/udc/cdns2/cdns2-gadget.c | 52 +- drivers/usb/gadget/udc/cdns2/cdns2-trace.c | 11 + drivers/usb/gadget/udc/cdns2/cdns2-trace.h | 605 ++++++++++++++++++++ 6 files changed, 896 insertions(+), 3 deletions(-) create mode 100644 drivers/usb/gadget/udc/cdns2/cdns2-debug.h create mode 100644 drivers/usb/gadget/udc/cdns2/cdns2-trace.c create mode 100644 drivers/usb/gadget/udc/cdns2/cdns2-trace.h