diff options
author | Felipe Balbi <balbi@ti.com> | 2014-04-30 17:45:10 -0500 |
---|---|---|
committer | Felipe Balbi <balbi@ti.com> | 2014-09-05 09:55:51 -0500 |
commit | 2c4cbe6e5a9c71408b496e00a78ea9284e98af16 (patch) | |
tree | c90423ae169751bf43925c9a37734762199ec803 /drivers/usb | |
parent | 3ece0ec474bf3cea9eefa7f92e3d4b6c3f9f71fd (diff) | |
download | op-kernel-dev-2c4cbe6e5a9c71408b496e00a78ea9284e98af16.zip op-kernel-dev-2c4cbe6e5a9c71408b496e00a78ea9284e98af16.tar.gz |
usb: dwc3: add tracepoints to aid debugging
When we're debugging hard-to-reproduce and time-sensitive
use cases, printk() poses too much overhead. That's when
the kernel's tracing infrastructure comes into play.
This patch implements a few initial tracepoints for the
dwc3 driver. More traces can be added as necessary in order
to ease the task of debugging dwc3.
Reviewed-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb')
-rw-r--r-- | drivers/usb/dwc3/Makefile | 5 | ||||
-rw-r--r-- | drivers/usb/dwc3/core.h | 2 | ||||
-rw-r--r-- | drivers/usb/dwc3/debug.c | 32 | ||||
-rw-r--r-- | drivers/usb/dwc3/debug.h | 2 | ||||
-rw-r--r-- | drivers/usb/dwc3/ep0.c | 64 | ||||
-rw-r--r-- | drivers/usb/dwc3/gadget.c | 36 | ||||
-rw-r--r-- | drivers/usb/dwc3/io.h | 30 | ||||
-rw-r--r-- | drivers/usb/dwc3/trace.c | 19 | ||||
-rw-r--r-- | drivers/usb/dwc3/trace.h | 220 |
9 files changed, 357 insertions, 53 deletions
diff --git a/drivers/usb/dwc3/Makefile b/drivers/usb/dwc3/Makefile index 10ac3e7..7793e6c 100644 --- a/drivers/usb/dwc3/Makefile +++ b/drivers/usb/dwc3/Makefile @@ -1,9 +1,12 @@ +# define_trace.h needs to know how to find our header +CFLAGS_trace.o := -I$(src) + ccflags-$(CONFIG_USB_DWC3_DEBUG) := -DDEBUG ccflags-$(CONFIG_USB_DWC3_VERBOSE) += -DVERBOSE_DEBUG obj-$(CONFIG_USB_DWC3) += dwc3.o -dwc3-y := core.o +dwc3-y := core.o debug.o trace.o ifneq ($(filter y,$(CONFIG_USB_DWC3_HOST) $(CONFIG_USB_DWC3_DUAL_ROLE)),) dwc3-y += host.o diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index c123745..66f6256 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -33,6 +33,8 @@ #include <linux/phy/phy.h> +#define DWC3_MSG_MAX 500 + /* Global constants */ #define DWC3_EP0_BOUNCE_SIZE 512 #define DWC3_ENDPOINTS_NUM 32 diff --git a/drivers/usb/dwc3/debug.c b/drivers/usb/dwc3/debug.c new file mode 100644 index 0000000..0be6885 --- /dev/null +++ b/drivers/usb/dwc3/debug.c @@ -0,0 +1,32 @@ +/** + * debug.c - DesignWare USB3 DRD Controller Debug/Trace Support + * + * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com + * + * Author: Felipe Balbi <balbi@ti.com> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 of + * the License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include "debug.h" + +void dwc3_trace(void (*trace)(struct va_format *), const char *fmt, ...) +{ + struct va_format vaf; + va_list args; + + va_start(args, fmt); + vaf.fmt = fmt; + vaf.va = &args; + + trace(&vaf); + + va_end(args); +} diff --git a/drivers/usb/dwc3/debug.h b/drivers/usb/dwc3/debug.h index 12ff4c9..07fbc2d 100644 --- a/drivers/usb/dwc3/debug.h +++ b/drivers/usb/dwc3/debug.h @@ -214,6 +214,8 @@ static inline const char *dwc3_gadget_event_type_string(u8 event) } } +void dwc3_trace(void (*trace)(struct va_format *), const char *fmt, ...); + #ifdef CONFIG_DEBUG_FS extern int dwc3_debugfs_init(struct dwc3 *); extern void dwc3_debugfs_exit(struct dwc3 *); diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index 994e1d8..b359387 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -66,7 +66,7 @@ static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum, dma_addr_t buf_dma, dep = dwc->eps[epnum]; if (dep->flags & DWC3_EP_BUSY) { - dev_vdbg(dwc->dev, "%s: still busy\n", dep->name); + dwc3_trace(trace_dwc3_ep0, "%s still busy", dep->name); return 0; } @@ -89,7 +89,8 @@ static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum, dma_addr_t buf_dma, ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, DWC3_DEPCMD_STARTTRANSFER, ¶ms); if (ret < 0) { - dev_dbg(dwc->dev, "failed to send STARTTRANSFER command\n"); + dwc3_trace(trace_dwc3_ep0, "%s STARTTRANSFER failed", + dep->name); return ret; } @@ -154,7 +155,8 @@ static int __dwc3_gadget_ep0_queue(struct dwc3_ep *dep, if (dwc->ep0state == EP0_STATUS_PHASE) __dwc3_ep0_do_control_status(dwc, dwc->eps[direction]); else - dev_dbg(dwc->dev, "too early for delayed status\n"); + dwc3_trace(trace_dwc3_ep0, + "too early for delayed status"); return 0; } @@ -218,7 +220,8 @@ int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request, spin_lock_irqsave(&dwc->lock, flags); if (!dep->endpoint.desc) { - dev_dbg(dwc->dev, "trying to queue request %p to disabled %s\n", + dwc3_trace(trace_dwc3_ep0, + "trying to queue request %p to disabled %s", request, dep->name); ret = -ESHUTDOWN; goto out; @@ -230,7 +233,8 @@ int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request, goto out; } - dev_vdbg(dwc->dev, "queueing request %p to %s length %d, state '%s'\n", + dwc3_trace(trace_dwc3_ep0, + "queueing request %p to %s length %d state '%s'", request, dep->name, request->length, dwc3_ep0_state_string(dwc->ep0state)); @@ -486,12 +490,13 @@ static int dwc3_ep0_set_address(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) addr = le16_to_cpu(ctrl->wValue); if (addr > 127) { - dev_dbg(dwc->dev, "invalid device address %d\n", addr); + dwc3_trace(trace_dwc3_ep0, "invalid device address %d", addr); return -EINVAL; } if (state == USB_STATE_CONFIGURED) { - dev_dbg(dwc->dev, "trying to set address when configured\n"); + dwc3_trace(trace_dwc3_ep0, + "trying to set address when configured"); return -EINVAL; } @@ -557,7 +562,7 @@ static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) dwc3_writel(dwc->regs, DWC3_DCTL, reg); dwc->resize_fifos = true; - dev_dbg(dwc->dev, "resize fifos flag SET\n"); + dwc3_trace(trace_dwc3_ep0, "resize FIFOs flag SET"); } break; @@ -681,35 +686,35 @@ static int dwc3_ep0_std_request(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) switch (ctrl->bRequest) { case USB_REQ_GET_STATUS: - dev_vdbg(dwc->dev, "USB_REQ_GET_STATUS\n"); + dwc3_trace(trace_dwc3_ep0, "USB_REQ_GET_STATUS\n"); ret = dwc3_ep0_handle_status(dwc, ctrl); break; case USB_REQ_CLEAR_FEATURE: - dev_vdbg(dwc->dev, "USB_REQ_CLEAR_FEATURE\n"); + dwc3_trace(trace_dwc3_ep0, "USB_REQ_CLEAR_FEATURE\n"); ret = dwc3_ep0_handle_feature(dwc, ctrl, 0); break; case USB_REQ_SET_FEATURE: - dev_vdbg(dwc->dev, "USB_REQ_SET_FEATURE\n"); + dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_FEATURE\n"); ret = dwc3_ep0_handle_feature(dwc, ctrl, 1); break; case USB_REQ_SET_ADDRESS: - dev_vdbg(dwc->dev, "USB_REQ_SET_ADDRESS\n"); + dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_ADDRESS\n"); ret = dwc3_ep0_set_address(dwc, ctrl); break; case USB_REQ_SET_CONFIGURATION: - dev_vdbg(dwc->dev, "USB_REQ_SET_CONFIGURATION\n"); + dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_CONFIGURATION\n"); ret = dwc3_ep0_set_config(dwc, ctrl); break; case USB_REQ_SET_SEL: - dev_vdbg(dwc->dev, "USB_REQ_SET_SEL\n"); + dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_SEL\n"); ret = dwc3_ep0_set_sel(dwc, ctrl); break; case USB_REQ_SET_ISOCH_DELAY: - dev_vdbg(dwc->dev, "USB_REQ_SET_ISOCH_DELAY\n"); + dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_ISOCH_DELAY\n"); ret = dwc3_ep0_set_isoch_delay(dwc, ctrl); break; default: - dev_vdbg(dwc->dev, "Forwarding to gadget driver\n"); + dwc3_trace(trace_dwc3_ep0, "Forwarding to gadget driver\n"); ret = dwc3_ep0_delegate_req(dwc, ctrl); break; } @@ -727,6 +732,8 @@ static void dwc3_ep0_inspect_setup(struct dwc3 *dwc, if (!dwc->gadget_driver) goto out; + trace_dwc3_ctrl_req(ctrl); + len = le16_to_cpu(ctrl->wLength); if (!len) { dwc->three_stage_setup = false; @@ -775,7 +782,7 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc, status = DWC3_TRB_SIZE_TRBSTS(trb->size); if (status == DWC3_TRBSTS_SETUP_PENDING) { - dev_dbg(dwc->dev, "Setup Pending received\n"); + dwc3_trace(trace_dwc3_ep0, "Setup Pending received"); if (r) dwc3_gadget_giveback(ep0, r, -ECONNRESET); @@ -835,7 +842,7 @@ static void dwc3_ep0_complete_status(struct dwc3 *dwc, ret = dwc3_gadget_set_test_mode(dwc, dwc->test_mode_nr); if (ret < 0) { - dev_dbg(dwc->dev, "Invalid Test #%d\n", + dwc3_trace(trace_dwc3_ep0, "Invalid Test #%d", dwc->test_mode_nr); dwc3_ep0_stall_and_restart(dwc); return; @@ -844,7 +851,7 @@ static void dwc3_ep0_complete_status(struct dwc3 *dwc, status = DWC3_TRB_SIZE_TRBSTS(trb->size); if (status == DWC3_TRBSTS_SETUP_PENDING) - dev_dbg(dwc->dev, "Setup Pending received\n"); + dwc3_trace(trace_dwc3_ep0, "Setup Pending received\n"); dwc->ep0state = EP0_SETUP_PHASE; dwc3_ep0_out_start(dwc); @@ -861,17 +868,17 @@ static void dwc3_ep0_xfer_complete(struct dwc3 *dwc, switch (dwc->ep0state) { case EP0_SETUP_PHASE: - dev_vdbg(dwc->dev, "Inspecting Setup Bytes\n"); + dwc3_trace(trace_dwc3_ep0, "Setup Phase"); dwc3_ep0_inspect_setup(dwc, event); break; case EP0_DATA_PHASE: - dev_vdbg(dwc->dev, "Data Phase\n"); + dwc3_trace(trace_dwc3_ep0, "Data Phase"); dwc3_ep0_complete_data(dwc, event); break; case EP0_STATUS_PHASE: - dev_vdbg(dwc->dev, "Status Phase\n"); + dwc3_trace(trace_dwc3_ep0, "Status Phase"); dwc3_ep0_complete_status(dwc, event); break; default: @@ -947,7 +954,7 @@ static int dwc3_ep0_start_control_status(struct dwc3_ep *dep) static void __dwc3_ep0_do_control_status(struct dwc3 *dwc, struct dwc3_ep *dep) { if (dwc->resize_fifos) { - dev_dbg(dwc->dev, "starting to resize fifos\n"); + dwc3_trace(trace_dwc3_ep0, "Resizing FIFOs"); dwc3_gadget_resize_tx_fifos(dwc); dwc->resize_fifos = 0; } @@ -988,7 +995,7 @@ static void dwc3_ep0_xfernotready(struct dwc3 *dwc, switch (event->status) { case DEPEVT_STATUS_CONTROL_DATA: - dev_vdbg(dwc->dev, "Control Data\n"); + dwc3_trace(trace_dwc3_ep0, "Control Data"); /* * We already have a DATA transfer in the controller's cache, @@ -1002,7 +1009,8 @@ static void dwc3_ep0_xfernotready(struct dwc3 *dwc, if (dwc->ep0_expect_in != event->endpoint_number) { struct dwc3_ep *dep = dwc->eps[dwc->ep0_expect_in]; - dev_vdbg(dwc->dev, "Wrong direction for Data phase\n"); + dwc3_trace(trace_dwc3_ep0, + "Wrong direction for Data phase"); dwc3_ep0_end_control_data(dwc, dep); dwc3_ep0_stall_and_restart(dwc); return; @@ -1014,13 +1022,13 @@ static void dwc3_ep0_xfernotready(struct dwc3 *dwc, if (dwc->ep0_next_event != DWC3_EP0_NRDY_STATUS) return; - dev_vdbg(dwc->dev, "Control Status\n"); + dwc3_trace(trace_dwc3_ep0, "Control Status"); dwc->ep0state = EP0_STATUS_PHASE; if (dwc->delayed_status) { WARN_ON_ONCE(event->endpoint_number != 1); - dev_vdbg(dwc->dev, "Mass Storage delayed status\n"); + dwc3_trace(trace_dwc3_ep0, "Delayed Status"); return; } @@ -1033,7 +1041,7 @@ void dwc3_ep0_interrupt(struct dwc3 *dwc, { u8 epnum = event->endpoint_number; - dev_dbg(dwc->dev, "%s while ep%d%s in state '%s'\n", + dwc3_trace(trace_dwc3_ep0, "%s while ep%d%s in state '%s'", dwc3_ep_event_string(event->endpoint_event), epnum >> 1, (epnum & 1) ? "in" : "out", dwc3_ep0_state_string(dwc->ep0state)); diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 096b638..f2dbaca 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -267,6 +267,7 @@ 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); @@ -278,8 +279,7 @@ 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); @@ -310,10 +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); @@ -710,6 +707,8 @@ static struct usb_request *dwc3_gadget_ep_alloc_request(struct usb_ep *ep, req->epnum = dep->number; req->dep = dep; + trace_dwc3_alloc_request(req); + return &req->request; } @@ -718,6 +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); } @@ -799,6 +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); } /* @@ -1143,6 +1145,7 @@ static int dwc3_gadget_ep_queue(struct usb_ep *ep, struct usb_request *request, 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); @@ -1163,6 +1166,8 @@ 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) { @@ -1753,6 +1758,8 @@ 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 @@ -1927,9 +1934,6 @@ 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; @@ -2122,8 +2126,6 @@ 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); @@ -2142,8 +2144,6 @@ 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 @@ -2228,8 +2228,6 @@ 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; @@ -2327,8 +2325,6 @@ 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. @@ -2433,10 +2429,6 @@ 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; } @@ -2513,6 +2505,8 @@ 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 */ diff --git a/drivers/usb/dwc3/io.h b/drivers/usb/dwc3/io.h index d94441c..6a79c8e6 100644 --- a/drivers/usb/dwc3/io.h +++ b/drivers/usb/dwc3/io.h @@ -20,27 +20,51 @@ #define __DRIVERS_USB_DWC3_IO_H #include <linux/io.h> - +#include "trace.h" +#include "debug.h" #include "core.h" static inline u32 dwc3_readl(void __iomem *base, u32 offset) { + u32 offs = offset - DWC3_GLOBALS_REGS_START; + u32 value; + /* * We requested the mem region starting from the Globals address * space, see dwc3_probe in core.c. * However, the offsets are given starting from xHCI address space. */ - return readl(base + (offset - DWC3_GLOBALS_REGS_START)); + value = readl(base + offs); + + /* + * When tracing we want to make it easy to find the correct address on + * documentation, so we revert it back to the proper addresses, the + * same way they are described on SNPS documentation + */ + dwc3_trace(trace_dwc3_readl, "addr %p value %08x", + base - DWC3_GLOBALS_REGS_START + offset, value); + + return value; } static inline void dwc3_writel(void __iomem *base, u32 offset, u32 value) { + u32 offs = offset - DWC3_GLOBALS_REGS_START; + /* * We requested the mem region starting from the Globals address * space, see dwc3_probe in core.c. * However, the offsets are given starting from xHCI address space. */ - writel(value, base + (offset - DWC3_GLOBALS_REGS_START)); + writel(value, base + offs); + + /* + * When tracing we want to make it easy to find the correct address on + * documentation, so we revert it back to the proper addresses, the + * same way they are described on SNPS documentation + */ + dwc3_trace(trace_dwc3_writel, "addr %p value %08x", + base - DWC3_GLOBALS_REGS_START + offset, value); } #endif /* __DRIVERS_USB_DWC3_IO_H */ diff --git a/drivers/usb/dwc3/trace.c b/drivers/usb/dwc3/trace.c new file mode 100644 index 0000000..6cd1664 --- /dev/null +++ b/drivers/usb/dwc3/trace.c @@ -0,0 +1,19 @@ +/** + * trace.c - DesignWare USB3 DRD Controller Trace Support + * + * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com + * + * Author: Felipe Balbi <balbi@ti.com> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 of + * the License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#define CREATE_TRACE_POINTS +#include "trace.h" diff --git a/drivers/usb/dwc3/trace.h b/drivers/usb/dwc3/trace.h new file mode 100644 index 0000000..78aff1d --- /dev/null +++ b/drivers/usb/dwc3/trace.h @@ -0,0 +1,220 @@ +/** + * trace.h - DesignWare USB3 DRD Controller Trace Support + * + * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com + * + * Author: Felipe Balbi <balbi@ti.com> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 of + * the License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#undef TRACE_SYSTEM +#define TRACE_SYSTEM dwc3 + +#if !defined(__DWC3_TRACE_H) || defined(TRACE_HEADER_MULTI_READ) +#define __DWC3_TRACE_H + +#include <linux/types.h> +#include <linux/tracepoint.h> +#include <asm/byteorder.h> +#include "core.h" +#include "debug.h" + +DECLARE_EVENT_CLASS(dwc3_log_msg, + TP_PROTO(struct va_format *vaf), + TP_ARGS(vaf), + TP_STRUCT__entry(__dynamic_array(char, msg, DWC3_MSG_MAX)), + TP_fast_assign( + vsnprintf(__get_str(msg), DWC3_MSG_MAX, vaf->fmt, *vaf->va); + ), + TP_printk("%s", __get_str(msg)) +); + +DEFINE_EVENT(dwc3_log_msg, dwc3_readl, + TP_PROTO(struct va_format *vaf), + TP_ARGS(vaf) +); + +DEFINE_EVENT(dwc3_log_msg, dwc3_writel, + TP_PROTO(struct va_format *vaf), + TP_ARGS(vaf) +); + +DEFINE_EVENT(dwc3_log_msg, dwc3_ep0, + TP_PROTO(struct va_format *vaf), + TP_ARGS(vaf) +); + +DECLARE_EVENT_CLASS(dwc3_log_event, + TP_PROTO(u32 event), + TP_ARGS(event), + TP_STRUCT__entry( + __field(u32, event) + ), + TP_fast_assign( + __entry->event = event; + ), + TP_printk("event %08x\n", __entry->event) +); + +DEFINE_EVENT(dwc3_log_event, dwc3_event, + TP_PROTO(u32 event), + TP_ARGS(event) +); + +DECLARE_EVENT_CLASS(dwc3_log_ctrl, + TP_PROTO(struct usb_ctrlrequest *ctrl), + TP_ARGS(ctrl), + TP_STRUCT__entry( + __field(struct usb_ctrlrequest *, ctrl) + ), + TP_fast_assign( + __entry->ctrl = ctrl; + ), + TP_printk("bRequestType %02x bRequest %02x wValue %04x wIndex %04x wLength %d", + __entry->ctrl->bRequestType, __entry->ctrl->bRequest, + le16_to_cpu(__entry->ctrl->wValue), le16_to_cpu(__entry->ctrl->wIndex), + le16_to_cpu(__entry->ctrl->wLength) + ) +); + +DEFINE_EVENT(dwc3_log_ctrl, dwc3_ctrl_req, + TP_PROTO(struct usb_ctrlrequest *ctrl), + TP_ARGS(ctrl) +); + +DECLARE_EVENT_CLASS(dwc3_log_request, + TP_PROTO(struct dwc3_request *req), + TP_ARGS(req), + TP_STRUCT__entry( + __field(struct dwc3_request *, req) + ), + TP_fast_assign( + __entry->req = req; + ), + TP_printk("%s: req %p length %u/%u ==> %d", + __entry->req->dep->name, __entry->req, + __entry->req->request.actual, __entry->req->request.length, + __entry->req->request.status + ) +); + +DEFINE_EVENT(dwc3_log_request, dwc3_alloc_request, + TP_PROTO(struct dwc3_request *req), + TP_ARGS(req) +); + +DEFINE_EVENT(dwc3_log_request, dwc3_free_request, + TP_PROTO(struct dwc3_request *req), + TP_ARGS(req) +); + +DEFINE_EVENT(dwc3_log_request, dwc3_ep_queue, + TP_PROTO(struct dwc3_request *req), + TP_ARGS(req) +); + +DEFINE_EVENT(dwc3_log_request, dwc3_ep_dequeue, + TP_PROTO(struct dwc3_request *req), + TP_ARGS(req) +); + +DEFINE_EVENT(dwc3_log_request, dwc3_gadget_giveback, + TP_PROTO(struct dwc3_request *req), + TP_ARGS(req) +); + +DECLARE_EVENT_CLASS(dwc3_log_generic_cmd, + TP_PROTO(unsigned int cmd, u32 param), + TP_ARGS(cmd, param), + TP_STRUCT__entry( + __field(unsigned int, cmd) + __field(u32, param) + ), + TP_fast_assign( + __entry->cmd = cmd; + __entry->param = param; + ), + TP_printk("cmd '%s' [%d] param %08x\n", + dwc3_gadget_generic_cmd_string(__entry->cmd), + __entry->cmd, __entry->param + ) +); + +DEFINE_EVENT(dwc3_log_generic_cmd, dwc3_gadget_generic_cmd, + TP_PROTO(unsigned int cmd, u32 param), + TP_ARGS(cmd, param) +); + +DECLARE_EVENT_CLASS(dwc3_log_gadget_ep_cmd, + TP_PROTO(struct dwc3_ep *dep, unsigned int cmd, + struct dwc3_gadget_ep_cmd_params *params), + TP_ARGS(dep, cmd, params), + TP_STRUCT__entry( + __field(struct dwc3_ep *, dep) + __field(unsigned int, cmd) + __field(struct dwc3_gadget_ep_cmd_params *, params) + ), + TP_fast_assign( + __entry->dep = dep; + __entry->cmd = cmd; + __entry->params = params; + ), + TP_printk("%s: cmd '%s' [%d] params %08x %08x %08x\n", + __entry->dep->name, dwc3_gadget_ep_cmd_string(__entry->cmd), + __entry->cmd, __entry->params->param0, + __entry->params->param1, __entry->params->param2 + ) +); + +DEFINE_EVENT(dwc3_log_gadget_ep_cmd, dwc3_gadget_ep_cmd, + TP_PROTO(struct dwc3_ep *dep, unsigned int cmd, + struct dwc3_gadget_ep_cmd_params *params), + TP_ARGS(dep, cmd, params) +); + +DECLARE_EVENT_CLASS(dwc3_log_trb, + TP_PROTO(struct dwc3_ep *dep, struct dwc3_trb *trb), + TP_ARGS(dep, trb), + TP_STRUCT__entry( + __field(struct dwc3_ep *, dep) + __field(struct dwc3_trb *, trb) + ), + TP_fast_assign( + __entry->dep = dep; + __entry->trb = trb; + ), + TP_printk("%s: trb %p bph %08x bpl %08x size %08x ctrl %08x\n", + __entry->dep->name, __entry->trb, __entry->trb->bph, + __entry->trb->bpl, __entry->trb->size, __entry->trb->ctrl + ) +); + +DEFINE_EVENT(dwc3_log_trb, dwc3_prepare_trb, + TP_PROTO(struct dwc3_ep *dep, struct dwc3_trb *trb), + TP_ARGS(dep, trb) +); + +DEFINE_EVENT(dwc3_log_trb, dwc3_complete_trb, + TP_PROTO(struct dwc3_ep *dep, struct dwc3_trb *trb), + TP_ARGS(dep, trb) +); + +#endif /* __DWC3_TRACE_H */ + +/* this part has to be here */ + +#undef TRACE_INCLUDE_PATH +#define TRACE_INCLUDE_PATH . + +#undef TRACE_INCLUDE_FILE +#define TRACE_INCLUDE_FILE trace + +#include <trace/define_trace.h> |