SDHCI Device Driver (first steps)

[Marian Asokarajan]

M. Warner Losh wrote:
> : : * NOTE: The driver is experimental and might crash your system!
> 
> It crashes mine.  I did tweak it a little to make it reconize the host
oops. Seems chip 0x8033 doesn't follow specs definied by sdcard.org ?!
I got the TI 0x803C by reading out driver details from a windows machine
(HP Laptop) in a shopping mall :)

> What's the current level?  I didn't get it to see insert/remove from
> my slot:
What do you mean by "current level" ?

> There's tests for slots that aren't quite right.  It and's with 0x70,
> but tests to see > 5, which it always will be if any of the bits are
> set.
Oops, huge bad mistake :( . Thanks for pointing that out.
I forgot the prefix "0x". the line now says:
if (sc->firstBARat>0x05 || sc->slots>0x50) ...

> The code should use more of the higher level interfaces in
> FreeBSD for accessing the pci bus.
Could you please give me hint on that ? I thought bus_space_* is already
an abstraction of the PCI bus (guess, I realy have to walk through the
pccard sources).

> The code should stive to be more style(9) compliant.  Its style is so
> different from the usual as to be difficult to read.
I printed out the man pages and had it as my bedtime lecture ;)
The code has been now "styled" a bit. I'll later setup a web page
with current codefile. for now the code is available at:
http://www.sashi.de/downloads/freebsd/sdhci/sdhcidd-current.tbz

Regards,
Sashi