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usb: dwc3: trace: decode ctrl request
Instead of *always* dumping raw ctrl bytes, let's decode standard requests which will make the lives of those debugging DWC3 quite a bit easier. Output will now look like so: irq/34-dwc3-1594 [000] d..1 107.573081: dwc3_ctrl_req: Get Device Descriptor(Index = 0, Length = 18) irq/34-dwc3-1594 [000] d..1 107.573694: dwc3_ctrl_req: Set Address(Addr = 01) irq/34-dwc3-1594 [000] d..1 107.588319: dwc3_ctrl_req: Get Device Descriptor(Index = 0, Length = 18) irq/34-dwc3-1594 [000] d..1 107.588816: dwc3_ctrl_req: Get Configuration Descriptor(Index = 0, Length = 9) irq/34-dwc3-1594 [000] d..1 107.589191: dwc3_ctrl_req: Set Configuration(Config = 3) irq/34-dwc3-1594 [000] d..1 107.589846: dwc3_ctrl_req: Get BOS Descriptor(Index = 0, Length = 5) irq/34-dwc3-1594 [000] d..1 107.590146: dwc3_ctrl_req: Get BOS Descriptor(Index = 0, Length = 22) irq/34-dwc3-1594 [000] d..1 107.590546: dwc3_ctrl_req: Get Configuration Descriptor(Index = 0, Length = 9) irq/34-dwc3-1594 [000] d..1 107.590840: dwc3_ctrl_req: Get Configuration Descriptor(Index = 0, Length = 69) irq/34-dwc3-1594 [000] d..1 107.591138: dwc3_ctrl_req: Get Configuration Descriptor(Index = 1, Length = 9) irq/34-dwc3-1594 [000] d..1 107.591541: dwc3_ctrl_req: Get Configuration Descriptor(Index = 1, Length = 32) irq/34-dwc3-1594 [000] d..1 107.591834: dwc3_ctrl_req: Get Device Descriptor(Index = 0, Length = 18) irq/34-dwc3-1594 [000] d..1 114.701005: dwc3_ctrl_req: Get Device Descriptor(Index = 0, Length = 18) irq/34-dwc3-1594 [000] d..1 114.721080: dwc3_ctrl_req: Get Device Descriptor(Index = 0, Length = 18) irq/34-dwc3-1594 [000] d..1 114.722709: dwc3_ctrl_req: Get Device Descriptor(Index = 0, Length = 18) irq/34-dwc3-1594 [000] d..1 114.728979: dwc3_ctrl_req: Get Device Descriptor(Index = 0, Length = 18) irq/34-dwc3-1594 [000] d..1 114.730544: dwc3_ctrl_req: Get Device Qualifier Descriptor(Index = 0, Length = 10) irq/34-dwc3-1594 [000] d..1 115.776018: dwc3_ctrl_req: Get Configuration Descriptor(Index = 0, Length = 9) irq/34-dwc3-1594 [000] d..1 115.776760: dwc3_ctrl_req: Set Configuration(Config = 0) irq/34-dwc3-1594 [000] d..1 115.777676: dwc3_ctrl_req: Get Configuration(Length = 1) irq/34-dwc3-1594 [000] d..1 115.924797: dwc3_ctrl_req: Get Device Descriptor(Index = 0, Length = 18) irq/34-dwc3-1594 [000] d..1 115.929025: dwc3_ctrl_req: Get String Descriptor(Index = 0, Length = 500) irq/34-dwc3-1594 [000] d..1 115.929566: dwc3_ctrl_req: Get String Descriptor(Index = 1, Length = 500) irq/34-dwc3-1594 [000] d..1 115.930911: dwc3_ctrl_req: Get String Descriptor(Index = 0, Length = 500) irq/34-dwc3-1594 [000] d..1 115.931528: dwc3_ctrl_req: Get String Descriptor(Index = 2, Length = 500) irq/34-dwc3-1594 [000] d..1 115.932950: dwc3_ctrl_req: Get String Descriptor(Index = 0, Length = 500) irq/34-dwc3-1594 [000] d..1 115.933533: dwc3_ctrl_req: Get String Descriptor(Index = 3, Length = 500) Note that Class and Vendor requests won't be decoded for obvious reasons. Those will be printed as a raw sequence of bytes. This patch has been tested against a normal host (both Linux and Windows) and USB30CV Chapter 9 tests. Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Felipe Balbi
parent
3587f36a12
commit
af32423a2d
@ -222,6 +222,240 @@ dwc3_gadget_event_string(char *str, const struct dwc3_event_devt *event)
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return str;
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}
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static inline void dwc3_decode_get_status(__u8 t, __u16 i, __u16 l, char *str)
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{
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switch (t & USB_RECIP_MASK) {
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case USB_RECIP_INTERFACE:
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sprintf(str, "Get Interface Status(Intf = %d, Length = %d)",
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i, l);
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break;
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case USB_RECIP_ENDPOINT:
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sprintf(str, "Get Endpoint Status(ep%d%s)",
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i & ~USB_DIR_IN,
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i & USB_DIR_IN ? "in" : "out");
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break;
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}
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}
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static inline void dwc3_decode_set_clear_feature(__u8 t, __u8 b, __u16 v,
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__u16 i, char *str)
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{
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switch (t & USB_RECIP_MASK) {
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case USB_RECIP_DEVICE:
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sprintf(str, "%s Device Feature(%s%s)",
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b == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
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({char *s;
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switch (v) {
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case USB_DEVICE_SELF_POWERED:
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s = "Self Powered";
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break;
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case USB_DEVICE_REMOTE_WAKEUP:
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s = "Remote Wakeup";
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break;
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case USB_DEVICE_TEST_MODE:
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s = "Test Mode";
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break;
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default:
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s = "UNKNOWN";
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} s; }),
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v == USB_DEVICE_TEST_MODE ?
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({ char *s;
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switch (i) {
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case TEST_J:
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s = ": TEST_J";
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break;
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case TEST_K:
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s = ": TEST_K";
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break;
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case TEST_SE0_NAK:
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s = ": TEST_SE0_NAK";
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break;
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case TEST_PACKET:
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s = ": TEST_PACKET";
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break;
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case TEST_FORCE_EN:
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s = ": TEST_FORCE_EN";
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break;
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default:
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s = ": UNKNOWN";
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} s; }) : "");
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break;
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case USB_RECIP_INTERFACE:
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sprintf(str, "%s Interface Feature(%s)",
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b == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
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v == USB_INTRF_FUNC_SUSPEND ?
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"Function Suspend" : "UNKNOWN");
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break;
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case USB_RECIP_ENDPOINT:
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sprintf(str, "%s Endpoint Feature(%s ep%d%s)",
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b == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
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v == USB_ENDPOINT_HALT ? "Halt" : "UNKNOWN",
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i & ~USB_DIR_IN,
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i & USB_DIR_IN ? "in" : "out");
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break;
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}
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}
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static inline void dwc3_decode_set_address(__u16 v, char *str)
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{
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sprintf(str, "Set Address(Addr = %02x)", v);
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}
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static inline void dwc3_decode_get_set_descriptor(__u8 t, __u8 b, __u16 v,
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__u16 i, __u16 l, char *str)
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{
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sprintf(str, "%s %s Descriptor(Index = %d, Length = %d)",
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b == USB_REQ_GET_DESCRIPTOR ? "Get" : "Set",
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({ char *s;
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switch (v >> 8) {
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case USB_DT_DEVICE:
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s = "Device";
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break;
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case USB_DT_CONFIG:
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s = "Configuration";
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break;
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case USB_DT_STRING:
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s = "String";
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break;
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case USB_DT_INTERFACE:
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s = "Interface";
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break;
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case USB_DT_ENDPOINT:
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s = "Endpoint";
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break;
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case USB_DT_DEVICE_QUALIFIER:
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s = "Device Qualifier";
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break;
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case USB_DT_OTHER_SPEED_CONFIG:
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s = "Other Speed Config";
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break;
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case USB_DT_INTERFACE_POWER:
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s = "Interface Power";
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break;
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case USB_DT_OTG:
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s = "OTG";
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break;
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case USB_DT_DEBUG:
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s = "Debug";
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break;
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case USB_DT_INTERFACE_ASSOCIATION:
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s = "Interface Association";
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break;
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case USB_DT_BOS:
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s = "BOS";
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break;
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case USB_DT_DEVICE_CAPABILITY:
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s = "Device Capability";
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break;
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case USB_DT_PIPE_USAGE:
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s = "Pipe Usage";
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break;
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case USB_DT_SS_ENDPOINT_COMP:
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s = "SS Endpoint Companion";
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break;
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case USB_DT_SSP_ISOC_ENDPOINT_COMP:
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s = "SSP Isochronous Endpoint Companion";
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break;
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default:
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s = "UNKNOWN";
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break;
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} s; }), v & 0xff, l);
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}
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static inline void dwc3_decode_get_configuration(__u16 l, char *str)
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{
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sprintf(str, "Get Configuration(Length = %d)", l);
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}
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static inline void dwc3_decode_set_configuration(__u8 v, char *str)
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{
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sprintf(str, "Set Configuration(Config = %d)", v);
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}
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static inline void dwc3_decode_get_intf(__u16 i, __u16 l, char *str)
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{
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sprintf(str, "Get Interface(Intf = %d, Length = %d)", i, l);
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}
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static inline void dwc3_decode_set_intf(__u8 v, __u16 i, char *str)
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{
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sprintf(str, "Set Interface(Intf = %d, Alt.Setting = %d)", i, v);
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}
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static inline void dwc3_decode_synch_frame(__u16 i, __u16 l, char *str)
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{
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sprintf(str, "Synch Frame(Endpoint = %d, Length = %d)", i, l);
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}
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static inline void dwc3_decode_set_sel(__u16 l, char *str)
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{
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sprintf(str, "Set SEL(Length = %d)", l);
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}
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static inline void dwc3_decode_set_isoch_delay(__u8 v, char *str)
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{
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sprintf(str, "Set Isochronous Delay(Delay = %d ns)", v);
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}
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/**
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* dwc3_decode_ctrl - returns a string represetion of ctrl request
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*/
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static inline const char *dwc3_decode_ctrl(char *str, __u8 bRequestType,
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__u8 bRequest, __u16 wValue, __u16 wIndex, __u16 wLength)
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{
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switch (bRequest) {
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case USB_REQ_GET_STATUS:
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dwc3_decode_get_status(bRequestType, wIndex, wLength, str);
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break;
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case USB_REQ_CLEAR_FEATURE:
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case USB_REQ_SET_FEATURE:
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dwc3_decode_set_clear_feature(bRequestType, bRequest, wValue,
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wIndex, str);
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break;
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case USB_REQ_SET_ADDRESS:
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dwc3_decode_set_address(wValue, str);
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break;
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case USB_REQ_GET_DESCRIPTOR:
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case USB_REQ_SET_DESCRIPTOR:
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dwc3_decode_get_set_descriptor(bRequestType, bRequest, wValue,
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wIndex, wLength, str);
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break;
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case USB_REQ_GET_CONFIGURATION:
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dwc3_decode_get_configuration(wLength, str);
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break;
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case USB_REQ_SET_CONFIGURATION:
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dwc3_decode_set_configuration(wValue, str);
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break;
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case USB_REQ_GET_INTERFACE:
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dwc3_decode_get_intf(wIndex, wLength, str);
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break;
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case USB_REQ_SET_INTERFACE:
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dwc3_decode_set_intf(wValue, wIndex, str);
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break;
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case USB_REQ_SYNCH_FRAME:
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dwc3_decode_synch_frame(wIndex, wLength, str);
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break;
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case USB_REQ_SET_SEL:
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dwc3_decode_set_sel(wLength, str);
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break;
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case USB_REQ_SET_ISOCH_DELAY:
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dwc3_decode_set_isoch_delay(wValue, str);
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break;
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default:
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sprintf(str, "%02x %02x %02x %02x %02x %02x %02x %02x",
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bRequestType, bRequest,
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cpu_to_le16(wValue) & 0xff,
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cpu_to_le16(wValue) >> 8,
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cpu_to_le16(wIndex) & 0xff,
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cpu_to_le16(wIndex) >> 8,
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cpu_to_le16(wLength) & 0xff,
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cpu_to_le16(wLength) >> 8);
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}
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return str;
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}
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/**
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* dwc3_ep_event_string - returns event name
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* @event: then event code
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@ -85,6 +85,7 @@ DECLARE_EVENT_CLASS(dwc3_log_ctrl,
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__field(__u16, wValue)
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__field(__u16, wIndex)
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__field(__u16, wLength)
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__dynamic_array(char, str, DWC3_MSG_MAX)
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),
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TP_fast_assign(
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__entry->bRequestType = ctrl->bRequestType;
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@ -93,10 +94,9 @@ DECLARE_EVENT_CLASS(dwc3_log_ctrl,
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__entry->wIndex = le16_to_cpu(ctrl->wIndex);
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__entry->wLength = le16_to_cpu(ctrl->wLength);
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),
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TP_printk("bRequestType %02x bRequest %02x wValue %04x wIndex %04x wLength %d",
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__entry->bRequestType, __entry->bRequest,
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__entry->wValue, __entry->wIndex,
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__entry->wLength
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TP_printk("%s", dwc3_decode_ctrl(__get_str(str), __entry->bRequestType,
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__entry->bRequest, __entry->wValue,
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__entry->wIndex, __entry->wLength)
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)
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);
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