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* fsl_dma: fix support for 83xx DMA engineIra W. Snyder2011-07-06-0/+2
| | | | | | | | | | | | | Commit 359ec4931944adb885882deb9b781e4095eabc94 broke support for the Freescale DMA engine on the 83xx parts. This is due to using registers which do not exist on 83xx. Remove the attribute register accesses from the 83xx build. Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu> Cc: York Sun <yorksun@freescale.com> Cc: Peter Tyser <ptyser@xes-inc.com> Cc: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
* powerpc/8xxx: Fix dma for 36bit addressingYork Sun2010-08-31-2/+6
| | | | | | | Use more bits to support 36-bit addressing Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* 83xx: Add support for fsl_dma driverPeter Tyser2009-07-02-15/+49
| | | | | | | | Signed-off-by: Peter Tyser <ptyser@xes-inc.com> Reviewed-by: Ira W. Snyder <iws@ovro.caltech.edu> Tested-by: Ira W. Snyder <iws@ovro.caltech.edu> Acked-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* fsl_dma: Make DMA transactions snoopablePeter Tyser2009-07-01-2/+2
| | | | | | | | | Make DMA transactions snoopable so that CPUs can keep caches up-to-date. This allows dma transactions to be used for operations such as memory copies without any additional cache control operations. Signed-off-by: Peter Tyser <ptyser@xes-inc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* fsl_dma: Break out common memory initialization functionPeter Tyser2009-07-01-0/+32
| | | | | Signed-off-by: Peter Tyser <ptyser@xes-inc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* 8xxx: Rename dma_xfer() to dmacpy()Peter Tyser2009-07-01-1/+1
| | | | | | | | Also update dmacpy()'s argument order to match memcpy's and use phys_addr_t/phy_size_t for address/size arguments Signed-off-by: Peter Tyser <ptyser@xes-inc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* fsl_dma: Fix Channel Start bug in dma_check()Peter Tyser2009-07-01-1/+1
| | | | | | | | | | | | The Channel Start (CS) bit in the Mode Register (MR) should actually be cleared as the comment in the code suggests. Previously, CS was being set, not cleared. Assuming normal operation of the DMA engine, this change shouldn't have any real affect. Signed-off-by: Peter Tyser <ptyser@xes-inc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* fsl_dma: Add support for arbitrarily large transfersPeter Tyser2009-07-01-12/+28
| | | | | | | | Support DMA transfers larger than the DMA controller's limit of (2 ^ 26 - 1) bytes Signed-off-by: Peter Tyser <ptyser@xes-inc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* fsl_dma: Use proper I/O access functionsPeter Tyser2009-07-01-14/+18
| | | | | Signed-off-by: Peter Tyser <ptyser@xes-inc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* fsl_dma: Add bitfield definitions for common registersPeter Tyser2009-07-01-6/+6
| | | | | Signed-off-by: Peter Tyser <ptyser@xes-inc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* 8xxx: Break out DMA code to a common filePeter Tyser2009-07-01-0/+92
DMA support is now enabled via the CONFIG_FSL_DMA define instead of the previous CONFIG_DDR_ECC Signed-off-by: Peter Tyser <ptyser@xes-inc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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