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3 Commits

Author SHA1 Message Date
Tim Yamin
6b61e69e7b powerpc/mpc5200: Add MDMA/UDMA support to MPC5200 ATA driver 
This patch adds MDMA/UDMA support using BestComm for DMA on the MPC5200
platform.  Based heavily on previous work by Freescale (Bernard Kuhn,
John Rigby) and Domen Puncer.

With this patch, a SanDisk Extreme IV CF card gets read speeds of
approximately 26.70 MB/sec.

Signed-off-by: Tim Yamin <plasm@roo.me.uk>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
 2008-12-21 02:54:29 -07:00
Tim Yamin
e4efe3c271 powerpc/mpc5200: Bestcomm fixes to ATA support 
1) ata.h has dst_pa in the wrong place (needs to match what the BestComm
   task microcode in bcom_ata_task.c expects); fix it.

2) The BestComm ATA task priority was changed to maximum in bestcomm_priv.h;
   this fixes a deadlock issue experienced with heavy DMA occurring on
   both the ATA and Ethernet BestComm tasks, e.g. when downloading a large
   file over a LAN to disk.

Signed-off-by: Tim Yamin <plasm@roo.me.uk>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
 2008-12-21 02:54:28 -07:00
Sylvain Munaut
9ea68df515 [POWERPC] bestcomm: ATA task support 
This is the microcode for the ATA task and the associated
support code.

The microcode itself comes directly from the offical
API (v2.2)

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
 2007-10-16 17:09:42 -06:00