Re: [linux-usb-devel] I have puzzled about usb_request struct for udc driver
Sounds like you have bugs to fix in your controller driver.
I advise folks to get g_zero working first; it's simpler, and unlike
the file_storage gadget it doesn't use the deferred response mode.
That way you can get the basic driver behavior to work correctly before
going on to fancier things (like queue lengths greater than one, the
deferred response mode, and so forth).
- Dave
thx dave
When i use g_zero instead of file_storage,i get the host mesg is:
hub 1-0:1.0: debounce: port 8: total 1500ms stable 0ms status 0x0
hub 1-0:1.0: connect-debounce failed, port 8 disabled
hub 2-0:1.0: state 5 ports 3 chg evt 0008
ohci_hcd :00:03.0: GetStatus roothub.portstatus [2] = 0x00010101 CSC
PPS CCS
hub 2-0:1.0: port 3, status 0101, change 0001, 12 Mb/s
hub 2-0:1.0: debounce: port 3: total 100ms stable 100ms status 0x101
ohci_hcd :00:03.0: GetStatus roothub.portstatus [2] = 0x00100103
PRSC PPS PES CCS
usb 2-3: new full speed USB device using ohci_hcd and address 3
ohci_hcd :00:03.0: GetStatus roothub.portstatus [2] = 0x00100103
PRSC PPS PES CCS
usb 2-3: new device strings: Mfr=25, Product=42, SerialNumber=101
usb 2-3: default language 0x0409
usb 2-3: Product: Gadget Zero
usb 2-3: hotplug
usb 2-3: configuration #3 chosen from 2 choices
usb 2-3: adding 2-3:3.0 (config #3, interface 0)
usb 2-3:3.0: hotplug
usbserial_generic 2-3:3.0: usb_probe_interface
usbserial_generic 2-3:3.0: usb_probe_interface - got id
usbtest 2-3:3.0: usb_probe_interface
usbtest 2-3:3.0: usb_probe_interface - got id
usbtest 2-3:3.0: Linux gadget zero
usbtest 2-3:3.0: full speed {control in/out bulk-in bulk-out} tests
(+alt)
What it means?It means my bus enumeration is right?
Besides,i met another problem:
I find when i do set_configuration,the set configuration execution is
delayed,that causes my USB_BULK_GET_MAX_LUN_REQUEST can't be executed
rightly(as fsg-config is 0 ).And the clear halt for ep1(
CLEAR_FAETURE)is not right either.Then,i get fsg full speed config #1
that means the SET_CONFIGURATION is right.but then,the host would not
send USB_BULK_GET_MAX_LUN_REQUEST any more.However,at that time,the
file_storage thinks the bus enumeration is finished,it begins to do scsi
command,and attempts to read my ep1_out,my ep1 fifo's data is not right
then.
That's my thinking for it,is it right?
if it is right,then how can i let set configuration finish before the
host sends USB_BULK_GET_MAX_LUN_REQUEST command?
---
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Re: [linux-usb-devel] I have puzzled about usb_request struct for udc driver
On Thu, 18 May 2006, Peter Chen wrote: I find when i do set_configuration,the set configuration execution is delayed,that causes my USB_BULK_GET_MAX_LUN_REQUEST can't be executed rightly(as fsg-config is 0 ).And the clear halt for ep1( CLEAR_FAETURE)is not right either.Then,i get fsg full speed config #1 that means the SET_CONFIGURATION is right.but then,the host would not send USB_BULK_GET_MAX_LUN_REQUEST any more.However,at that time,the file_storage thinks the bus enumeration is finished,it begins to do scsi command,and attempts to read my ep1_out,my ep1 fifo's data is not right then. That's my thinking for it,is it right? Your thinking is right but your udc driver is wrong. if it is right,then how can i let set configuration finish before the host sends USB_BULK_GET_MAX_LUN_REQUEST command? When your udc driver calls fsg_setup, it should NAK the status stage of the control transfer until the gadget driver calls usb_ep_queue(). That will happen after set_configuration is finished. The host will wait until you stop sending NAK before it proceeds with Get-Max-LUN. Alan Stern --- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnkkid=120709bid=263057dat=121642 ___ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
Re: [linux-usb-devel] I have puzzled about usb_request struct for udc driver
On Tue, 16 May 2006, Peter Chen wrote: Hi,all When i develop udc driver,i can assign some values for the struct of usb_request through fsg-setup(file_storage.c) at bus enumeration But,as far as other ep's tx/rx are conterned,how to ensure the req is not NULL when the other ep's interrupt comes.Usually,we see req = list_entry(ep-queue.next,struct xxx_request, queue); And obvious,here the req is not NULL.But i don't know when the req is assigned. req is assigned when the gadget driver calls ep-ops-queue(). Sometimes req _will_ be NULL when a bulk endpoint's interrupt comes. This is normal. When it happens your udc driver should send back NAK. Besides,I have a problem now.When i finished set_configuration,my program is crashed,I look at the code of file_storage,and find it executes the get_next_command,it reads data from my ep1 fifo.i know it will executes get_next_command when finish bus enumeration,and do scsi command.Then what causes my program invokes the get_next_command? get_next_command() is called by fsg_main_thread(). That's the _only_ place where it is called. I think i can't finish the bus enumeration. the crash messages are below:(it repeats over and over) **INT RESET** dm320_ep_queue:829 ep1_out queue req c0724460, len 64 buf c02f8000 invalid CBW: len 64 sig 0x received_cbw:2979 received_cbw... halt_bulk_in_endpoint:2317 halt_bulk_in_endpoint front Evidently you still have bugs in your udc driver. It does not copy the bulk data from the USB bus into req-buf. Alan Stern --- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnkkid=120709bid=263057dat=121642 ___ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
Re: [linux-usb-devel] I have puzzled about usb_request struct for udc driver
On Monday 15 May 2006 6:50 pm, Peter Chen wrote: And obvious,here the req is not NULL.But i don't know when the req is assigned. You've asked variants of this question before, as I recall, but don't seem to have absorbed the answer: there are no requests in the endpoint's queue until the gadget driver isssues a usb_ep_queue() call. Then the controller driver processes the requests in FIFO order, and issues the completion callbacks as each one finishes. Besides,I have a problem now.When i finished set_configuration,my program is crashed,I look at the code of file_storage,and find it executes the get_next_command,it reads data from my ep1 fifo.i know it will executes get_next_command when finish bus enumeration,and do scsi command.Then what causes my program invokes the get_next_command?I think i can't finish the bus enumeration. Sounds like you have bugs to fix in your controller driver. I advise folks to get g_zero working first; it's simpler, and unlike the file_storage gadget it doesn't use the deferred response mode. That way you can get the basic driver behavior to work correctly before going on to fancier things (like queue lengths greater than one, the deferred response mode, and so forth). - Dave --- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnkkid=120709bid=263057dat=121642 ___ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
[linux-usb-devel] I have puzzled about usb_request struct for udc driver
Hi,all When i develop udc driver,i can assign some values for the struct of usb_request through fsg-setup(file_storage.c) at bus enumeration But,as far as other ep's tx/rx are conterned,how to ensure the req is not NULL when the other ep's interrupt comes.Usually,we see req = list_entry(ep-queue.next,struct xxx_request, queue); And obvious,here the req is not NULL.But i don't know when the req is assigned. Besides,I have a problem now.When i finished set_configuration,my program is crashed,I look at the code of file_storage,and find it executes the get_next_command,it reads data from my ep1 fifo.i know it will executes get_next_command when finish bus enumeration,and do scsi command.Then what causes my program invokes the get_next_command?I think i can't finish the bus enumeration. the crash messages are below:(it repeats over and over) **INT RESET** dm320_ep_queue:829 ep1_out queue req c0724460, len 64 buf c02f8000 invalid CBW: len 64 sig 0x received_cbw:2979 received_cbw... halt_bulk_in_endpoint:2317 halt_bulk_in_endpoint front thx. --- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnkkid=120709bid=263057dat=121642 ___ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
