#
ff76d2df |
|
10-Feb-2019 |
Adrien Destugues <pulkomandy@pulkomandy.tk> |
sdhci and mmc implementation sdhci: - Add semaphore for interrupt management - Add basic operations (setting clock, executing a command) - Add early initialization (clocks and power up) - Wrap the bus in a C++ class to ease usage - Expose API to MMC bus manager - TODO: manage card insertion and removal interrupts - TODO: use MSI when available mmc_bus: - Implements SD card management independant of the way we access the bus (later on different drivers can provide the same API as SDHCI) - Worker thread to do the initialization - Implement card initialization process up until getting an RCA from the card. This is the generic part to assign an ID to the card, after this point commands can be targetted at the specific card so it can be handed over to the mmc_disk driver. - TODO: initialization for non-SDHC cards which do not reply to CMD8. Change-Id: I71950ca3ce206378a68fa7f97c19f638183d6cdd Reviewed-on: https://review.haiku-os.org/c/1032 Reviewed-by: waddlesplash <waddlesplash@gmail.com>
|
#
25b6a6f1 |
|
28-Apr-2018 |
krish_iyer <krishnaniyer97@gmail.com> |
SDHCI MMC Driver 1. SDHCI PCI Bus: Discovering SDHC device from the PCI bus and registers a child node(MMC bus) to which slots are attached. SDHC registers are mapped by MMUIO, they are binded in a structure(struct* registers). A pin based interrupt handler is also installed, which triggers the handler function and interrupts are being taken care of. Added API's to set-up and the clock for SD/MMC card, change frequency and reset the registers. 2. Device Manager: Currently, busses subdir lists are har- dcoded and in order to load the driver. We hard coded the bus dir under PCI devices. 3. MMC Disk Driver: In order to register the slots under /dev/disk/mmc and hence data transfer and other operations can be done. 4. MMC Bus Manager: Setted up a bus manager to create an object to do a particular for eg certain data transfer and get freed until another operation is requested. Change-Id: I369354da6b79adc6b6dfb08fe160334af1392a34 Reviewed-on: https://review.haiku-os.org/318 Reviewed-by: Alexander von Gluck IV <kallisti5@unixzen.com>
|