Hi, >> Ok. What other gadget driver can i test with UDC driver? Is it the >> mass storage driver (mass_storage.c)? > > That is essentially the same as g_file_storage. But there are lots of > others. You should start with g_zero and run the testusb suite. See > > http://www.linux-usb.org/gadget/ > > and > > http://www.linux-usb.org/usbtest/ > > for more information. Those web pages are pretty old and somewhat out > of date, but they still have useful stuff.
I tested the g_zero with USB 2.0 Command Verifier. After the Command Verifier is run, the UDC gadget driver queue function is continuously being called, and the linux command prompt is frozen. Please see the attached UDC driver log. It looks like endpoint 1 in direction is called by USB 2.0 Command Verifier continuously. Is this weird? thanks, victor
# insmod kagen2_udc.ko kagen2_init kagen2_plat_probe 1 kagen2_plat_probe 5 kagen2_plat_probe 6, 0xc2886000 0x1000 read pclk ffff scu 7 irqmask ffbffffd ffff7fff val is 0x0 val is 0x8 check USB_OTGST 0x51000801 check USB_OTGIRQ 0x51000810 check USB_IRQINIT 0x70007 check USB_OTGFSM 0xa1d191f check USB_OTGCTRL 0x51300801 kagen2_plat_probe 8 register irq 32 kagen2_init 0 # insmod g_zero.ko bind epname ep1 epname ep1 epname ep1 epname ep1 gadget: Gadget Zero, version: Cinco de Mayo 2008 gadget: zero ready usb_gadget_udc_start 0xbf0386b8 0xbf0364c8 kagen2_start 0xbf0386b8 0xbf0364c8 0xc12d2cf0 0xbf030eb0 usb_gadget_connect # ept0 in queue len 0x12, buffer 0xc12d3000 USB_RECIP_DEVICE exit A ept0 in queue len 0x12, buffer 0xc12d3000 ept0 in queue len 0x9, buffer 0xc12d3000 ept0 in queue len 0x4, buffer 0xc12d3000 ept0 in queue len 0x42, buffer 0xc12d3000 ept0 in queue len 0x20, buffer 0xc12d3000 ept0 in queue len 0x4, buffer 0xc12d3000 ept0 in queue len 0x18, buffer 0xc12d3000 ept0 in queue len 0x4, buffer 0xc12d3000 ept0 in queue len 0x18, buffer 0xc12d3000 ept0 in queue len 0x20, buffer 0xc12d3000 ept0 in queue len 0xa, buffer 0xc12d3000 ept0 in queue len 0x9, buffer 0xc12d3000 ept0 in queue len 0x20, buffer 0xc12d3000 ept0 in queue len 0x4, buffer 0xc12d3000 ept0 in queue len 0x3a, buffer 0xc12d3000 ept0 in queue len 0x18, buffer 0xc12d3000 ept0 in queue len 0x42, buffer 0xc12d3000 ept0 in queue len 0x2a, buffer 0xc12d3000 ept0 in queue len 0x2a, buffer 0xc12d3000 ept0 in queue len 0x12, buffer 0xc12d3000 USB_RECIP_DEVICE exit A ept0 in queue len 0x12, buffer 0xc12d3000 ept0 in queue len 0x9, buffer 0xc12d3000 zero gadget: high-speed config #3: source/sink ept1 in queue len 0x1000, buffer 0xc180d000 len_num 4096, iter_num 0 len_num 3584, iter_num 1 len_num 3072, iter_num 2 len_num 2560, iter_num 3 len_num 2048, iter_num 4 len_num 1536, iter_num 5 len_num 1024, iter_num 6 len_num 512, iter_num 7 ept1 in queue len 0x1000, buffer 0xc180d000 len_num 4096, iter_num 0 len_num 3584, iter_num 1 len_num 3072, iter_num 2 len_num 2560, iter_num 3 len_num 2048, iter_num 4 len_num 1536, iter_num 5 len_num 1024, iter_num 6 len_num 512, iter_num 7 ept1 in queue len 0x1000, buffer 0xc180d000 len_num 4096, iter_num 0 len_num 3584, iter_num 1 len_num 3072, iter_num 2 len_num 2560, iter_num 3 len_num 2048, iter_num 4 len_num 1536, iter_num 5 len_num 1024, iter_num 6 len_num 512, iter_num 7 ept1 in queue len 0x1000, buffer 0xc180d000 len_num 4096, iter_num 0 len_num 3584, iter_num 1 len_num 3072, iter_num 2 len_num 2560, iter_num 3 len_num 2048, iter_num 4 len_num 1536, iter_num 5 len_num 1024, iter_num 6 len_num 512, iter_num 7 ept1 in queue len 0x1000, buffer 0xc180d000 len_num 4096, iter_num 0 len_num 3584, iter_num 1 len_num 3072, iter_num 2 len_num 2560, iter_num 3 len_num 2048, iter_num 4 len_num 1536, iter_num 5 len_num 1024, iter_num 6 len_num 512, iter_num 7 ept1 in queue len 0x1000, buffer 0xc180d000 len_num 4096, iter_num 0 len_num 3584, iter_num 1 len_num 3072, iter_num 2 len_num 2560, iter_num 3 len_num 2048, iter_num 4 len_num 1536, iter_num 5 len_num 1024, iter_num 6 len_num 512, iter_num 7 ept1 in queue len 0x1000, buffer 0xc180d000 len_num 4096, iter_num 0 len_num 3584, iter_num 1 len_num 3072, iter_num 2 len_num 2560, iter_num 3 len_num 2048, iter_num 4 len_num 1536, iter_num 5 len_num 1024, iter_num 6 len_num 512, iter_num 7 ept1 in queue len 0x1000, buffer 0xc180d000 len_num 4096, iter_num 0 len_num 3584, iter_num 1 len_num 3072, iter_num 2 len_num 2560, iter_num 3 len_num 2048, iter_num 4 len_num 1536, iter_num 5 len_num 1024, iter_num 6 len_num 512, iter_num 7 ept1 in queue len 0x1000, buffer 0xc180d000 len_num 4096, iter_num 0 len_num 3584, iter_num 1 len_num 3072, iter_num 2 len_num 2560, iter_num 3 len_num 2048, iter_num 4 len_num 1536, iter_num 5 len_num 1024, iter_num 6 len_num 512, iter_num 7
