RFC: PCI SD host controller driver & mmc/mmcsd modules improvements

[M. Warner Losh]

In message: <4913345F.2050801 at FreeBSD.org>
            Alexander Motin <mav at FreeBSD.org> writes:
: Lars Engels wrote:
: > On another notebook with the same card reader I get a little further:
: > 
: > sdhci0: <RICOH R5C822 SD> mem 0xd8002800-0xd80028ff irq 22 at device 9.2
: > on pci5
: > sdhci0: 1 slot(s) allocated
: > sdhci0: [ITHREAD]
: > mmc0: <MMC/SD bus> on sdhci0
: > mmc0: detached
: > mmc0: <MMC/SD bus> on sdhci0
: > 
: > So the mmc device is detected everytime I insert a card and is removed
: > when I take the card out.
: 
: It means that controller successfully reports card insertion. You must 
: be a half way there.
: 
: > But I do not get a new disk device...
: 
: A bit more debugging can be produced with enabling verbose boot messages.
: 
: > pciconf tells me pretty much the same like on the other notebook:
: 
: Looks like it may depend or on controller version or on the way it is 
: hardwired or somehow BIOS initialized. There are were some success 
: stories reported with this controller.

Add mmcsd to the kernel?  Load it as a module?

Warner