- Allow multiple packets read/write for IR/IT to reduce system call.
- Remove unused variables.

- Improve IT/IR DMA queue management.
- Improve debug message for mbuf handling.
- Wait 1 sec for DMA stop in fwohci_i{t,r}x_disable() before freeing buffers.

Change API of FW_GDEVLST ioctl.
- include information about itself.
- define struct fw_devinfo and use it in struct fw_devlstreq.
- unify EUI64 representation using struct fw_eui64.

Remove FW_SSTDV ioctl. It is not used anymore.

Replace M_DONTWAIT with M_NOWAIT for malloc().

Pointed out by: nate@root.org

Detect underrun of IT queue for debugging.
Add some comments.

Improve memory allocation.
- Don't use contigmalloc() and allocate page by page to avoid
allocation failure.
- allocate buffer by PAGE_SIZE.

Add DV_PAL for PAL users.

Minimal fix for DV part.
- Don't panic on contigmalloc failure.
- Calculate timestamp by feedforward rather than feedback which depends on
unreliable interrupt timing.
- Overwrite timestamp in CIP h

Minimal fix for DV part.
- Don't panic on contigmalloc failure.
- Calculate timestamp by feedforward rather than feedback which depends on
unreliable interrupt timing.
- Overwrite timestamp in CIP header correctly.
- Add debug code for timestamp synchronization.
- Add comments.

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Use device_printf() and s/fc->dev/fc->bdev/.

- Remove speed_map API because speed_map is obsoleted by 1394a.
- Add definition of OHCI_HCC_BIBIV in fwohcireg.h.

fix wording.

Split userland services to fwdev.c.