mmc(4) [debian man page]

MMC(4)							   BSD Kernel Interfaces Manual 						    MMC(4)

NAME

     mmc -- MultiMediaCard and SD Card bus driver

SYNOPSIS

     device mmc

DESCRIPTION

     The mmc driver implements the MMC and SD Card bus.  The mmc driver supports all MMC and SD bridges in the system.	All SD or MMC cards in the
     system attach to an instance of mmc.  The mmc bus typically has only one slot, and only memory cards.  MultiMediaCards exist only in memory.
     SD Cards exist as memory, I/O, or combination cards.

SEE ALSO

     mmcsd(4), at91_mci(4), sdhci(4)

     SD Specifications, Part 1, Physical Layer, Simplified Specification.

     The MultiMediaCard System Specification.

BUGS

     SDIO cards currently do not work.

BSD
								  October 8, 2008							       BSD

sdcard(7D)							      Devices								sdcard(7D)

NAME

       sdcard - SD/MMC memory card driver

DESCRIPTION

       The  sdcard memory card driver supports MultiMediaCard (MMC), Secure Digital (SD), and Secure Digital High Capacity (SDHC) memory cards. It
       uses the blk2scsa(7D) service to present these cards to the system as SCSI disks on a virtual SCSI bus, creating a child device to be  ser-
       viced with sd(7D). Each card appears as its own SCSI LUN. Cards are hot-pluggable and removable.

DEVICE SPECIAL FILES

       Disk block special file names are located in /dev/dsk. Raw file names are located in /dev/rdsk.	See sd(7D).

IOCTLS

       See dkio(7I)

ERRORS

       See sd(7D) and blk2scsa(7D). Additionally, sdcard may issue the following warnings, which indicate a failure to identify the card as a sup-
       ported type:

	 "Unknown SD CSD version (%d)"
	 "Unknown MMC CSD version (%d)"
	 "Unknown MMCA version (%d)"
	 "Card type unknown"

FILES

       Device special files for the storage device are created in the same way as those for a SCSI disk. See sd(7D) for more information.

       /dev/dsk/cntndnsn	     Block files for disks.

       /dev/rdsk/cntndnsn	     Raw files for disks.

       /kernel/drv/sdcard	     32-bit ELF kernel module (x86).

       /kernel/misc/amd64/sdcard     64-bit ELF kernel module (x86).

       /kernel/drv/sparcv9/sdcard    64-bit ELF kernel module (SPARC).

ATTRIBUTES

       See attributes(5) for a description of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Architecture		     |SPARC, x86		   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWsdcard		   |
       +-----------------------------+-----------------------------+

SEE ALSO

       rmformat(1),  rmmount(1),  cfgadm_scsi(1M),  cfgadm_sdcard(1M),	fdisk(1M),  mount(1M),	umount(1M),  scsi(4),  vfstab(4),   attributes(5),
       blk2scsa(7D), sd(7D), sda(7D), dkio(7I), pcfs(7FS)

       System Administration Guide, Volume I

       System Administration Guide: Basic Administration

DIAGNOSTICS

       See sd(7D).

SunOS 5.11							    28 Feb 2008 							sdcard(7D)