C67x00 Driver IRQ Problem.

[Robertson, Joseph M.]

Hi all.

I got the driver registered and have spent some time tracking down a IRQ problem.
It just ignores me when it gets to 'request_irq' with a 'nobody cared' response.  
The memory appears right and the test IRQ of 3 is supposed to be correct.  
I never see the HCD driver load up, does that have to startup first?

I tried also waking the c67300 chip by writing a Interrupt Enable Reg (0xC00E) a value to enable the ints.  

Do I need a /dev/usb device tree of some kind?  I have a fixed dev tree since we are a embedded sys.

I added some printk messages to help us out...
Any helpful info would be much appreciated.
Kernel code is 2.6.17.3, much hacked and maligned by me.
I made a module of the c67x00, heres the load results.

Load Results -----
c67x00 init.<6>bus platform: add driver c67x00
before kset = bus->drivers.
c67x00 drv probing...
c67x00 drv get mem resource.
platform_get_resource, num resources=2.
dev->resource[0]=512
c67x00 drv get irq resource.
platform_get_resource, num resources=2.
dev->resource[0]=512
dev->resource[1]=1024
c67x00 drv get platform data.
c67x00 drv setup sies.
c67x00 c67x00.0: USB OTG controller, p:0x43e00000, v:0xc5058000, irq:3
irq 3: nobody cared (try booting with the "irqpoll" option)
Call Trace:
[C0F0FA50] [C0009BC0] show_stack+0x44/0x194 (unreliable)
[C0F0FA90] [C004A118] __report_bad_irq+0x34/0xac
[C0F0FAB0] [C004A268] note_interrupt+0xbc/0x13c
[C0F0FAE0] [C00498E8] __do_IRQ+0x1a8/0x1c0
[C0F0FB10] [C0007360] do_IRQ+0x48/0x78
[C0F0FB30] [C00033FC] ret_from_except+0x0/0x18
[C0F0FBF0] [C0F0FC90] 0xc0f0fc90
[C0F0FC20] [C00073F4] do_softirq+0x64/0x74
[C0F0FC40] [C0028358] irq_exit+0x60/0x64
[C0F0FC60] [C0007364] do_IRQ+0x4c/0x78
[C0F0FC80] [C00033FC] ret_from_except+0x0/0x18
[C0F0FD40] [C5058000] 0xc5058000
[C0F0FD70] [C0049EC0] request_irq+0x94/0xc8
[C0F0FDA0] [C50715B4] usb_c67x00_drv_probe+0x240/0x2f4 [c67x00]
[C0F0FDF0] [C0142124] platform_drv_probe+0x20/0x30
[C0F0FE00] [C013FA58] driver_probe_device+0x7c/0x110
[C0F0FE20] [C013EE70] bus_for_each_drv+0x74/0xa4
[C0F0FE60] [C013FB98] device_attach+0xa8/0xb8
[C0F0FE80] [C013F004] bus_add_device+0x34/0xa0
[C0F0FEA0] [C013D900] device_add+0x128/0x188
[C0F0FED0] [C0141EDC] platform_device_add+0xd4/0x194
[C0F0FF00] [C502D074] c67x00_init+0x74/0x118 [c67x00]
[C0F0FF20] [C00433A8] sys_init_module+0x188/0x240
[C0F0FF40] [C0002DB4] ret_from_syscall+0x0/0x3c
handlers:
[<c5071220>] (c67x00_irq+0x0/0x154 [c67x00])
Disabling IRQ #3
Badness in ll_recv_msg at drivers/usb/c67x00/c67x00-ll-hpi.c:246
Call Trace:
[C0F0FC50] [C0009BC0] show_stack+0x44/0x194 (unreliable)
[C0F0FC90] [C0003F64] check_bug_trap+0x84/0xac
[C0F0FCA0] [C0004130] program_check_exception+0x1a4/0x1f8
[C0F0FCC0] [C00033B0] ret_from_except_full+0x0/0x4c
[C0F0FD80] [C5072A6C] c67x00_ll_reset+0x84/0xe0 [c67x00]
[C0F0FDA0] [C50715FC] usb_c67x00_drv_probe+0x288/0x2f4 [c67x00]
[C0F0FDF0] [C0142124] platform_drv_probe+0x20/0x30
[C0F0FE00] [C013FA58] driver_probe_device+0x7c/0x110
[C0F0FE20] [C013EE70] bus_for_each_drv+0x74/0xa4
[C0F0FE60] [C013FB98] device_attach+0xa8/0xb8
[C0F0FE80] [C013F004] bus_add_device+0x34/0xa0
[C0F0FEA0] [C013D900] device_add+0x128/0x188
[C0F0FED0] [C0141EDC] platform_device_add+0xd4/0x194
[C0F0FF00] [C502D074] c67x00_init+0x74/0x118 [c67x00]
[C0F0FF20] [C00433A8] sys_init_module+0x188/0x240
[C0F0FF40] [C0002DB4] ret_from_syscall+0x0/0x3c
c67x00 c67x00.0: Device reset failed
c67x00: probe of c67x00.0 failed with error 65531
c67x00 udc init.
ECAU-9999:# 
End Load Results -----


Memory Check-----
ECAU-9999:# cat /proc/iomem 
40401003-40401022 : serial
40421003-40421022 : serial
43e00000-43e0000f : c67x00.0
End Memory CHeck------


Many Thanks,

Joe Robertson
Joseph.Robertson at sanmina-sci.com


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