linux/drivers/dma
Linus Torvalds 8ceafbfa91 Merge branch 'for-linus-dma-masks' of git://git.linaro.org/people/rmk/linux-arm
Pull DMA mask updates from Russell King:
 "This series cleans up the handling of DMA masks in a lot of drivers,
  fixing some bugs as we go.

  Some of the more serious errors include:
   - drivers which only set their coherent DMA mask if the attempt to
     set the streaming mask fails.
   - drivers which test for a NULL dma mask pointer, and then set the
     dma mask pointer to a location in their module .data section -
     which will cause problems if the module is reloaded.

  To counter these, I have introduced two helper functions:
   - dma_set_mask_and_coherent() takes care of setting both the
     streaming and coherent masks at the same time, with the correct
     error handling as specified by the API.
   - dma_coerce_mask_and_coherent() which resolves the problem of
     drivers forcefully setting DMA masks.  This is more a marker for
     future work to further clean these locations up - the code which
     creates the devices really should be initialising these, but to fix
     that in one go along with this change could potentially be very
     disruptive.

  The last thing this series does is prise away some of Linux's addition
  to "DMA addresses are physical addresses and RAM always starts at
  zero".  We have ARM LPAE systems where all system memory is above 4GB
  physical, hence having DMA masks interpreted by (eg) the block layers
  as describing physical addresses in the range 0..DMAMASK fails on
  these platforms.  Santosh Shilimkar addresses this in this series; the
  patches were copied to the appropriate people multiple times but were
  ignored.

  Fixing this also gets rid of some ARM weirdness in the setup of the
  max*pfn variables, and brings ARM into line with every other Linux
  architecture as far as those go"

* 'for-linus-dma-masks' of git://git.linaro.org/people/rmk/linux-arm: (52 commits)
  ARM: 7805/1: mm: change max*pfn to include the physical offset of memory
  ARM: 7797/1: mmc: Use dma_max_pfn(dev) helper for bounce_limit calculations
  ARM: 7796/1: scsi: Use dma_max_pfn(dev) helper for bounce_limit calculations
  ARM: 7795/1: mm: dma-mapping: Add dma_max_pfn(dev) helper function
  ARM: 7794/1: block: Rename parameter dma_mask to max_addr for blk_queue_bounce_limit()
  ARM: DMA-API: better handing of DMA masks for coherent allocations
  ARM: 7857/1: dma: imx-sdma: setup dma mask
  DMA-API: firmware/google/gsmi.c: avoid direct access to DMA masks
  DMA-API: dcdbas: update DMA mask handing
  DMA-API: dma: edma.c: no need to explicitly initialize DMA masks
  DMA-API: usb: musb: use platform_device_register_full() to avoid directly messing with dma masks
  DMA-API: crypto: remove last references to 'static struct device *dev'
  DMA-API: crypto: fix ixp4xx crypto platform device support
  DMA-API: others: use dma_set_coherent_mask()
  DMA-API: staging: use dma_set_coherent_mask()
  DMA-API: usb: use new dma_coerce_mask_and_coherent()
  DMA-API: usb: use dma_set_coherent_mask()
  DMA-API: parport: parport_pc.c: use dma_coerce_mask_and_coherent()
  DMA-API: net: octeon: use dma_coerce_mask_and_coherent()
  DMA-API: net: nxp/lpc_eth: use dma_coerce_mask_and_coherent()
  ...
2013-11-14 07:55:21 +09:00
..
bestcomm drivers: clean-up prom.h implicit includes 2013-10-09 20:04:04 -05:00
dw DMA-API: dma: dw_dmac.c: convert to use dma_coerce_mask_and_coherent() 2013-10-31 14:48:51 +00:00
ioat ioatdma: silence GCC warnings 2013-08-23 00:21:44 -07:00
ipu dma: ipu: remove unnecessary platform_set_drvdata() 2013-08-25 14:37:13 +05:30
ppc4xx powerpc: add missing explicit OF includes for ppc 2013-11-11 09:10:50 -06:00
sh rcar-hpbdma: add parameter to set_slave() method 2013-10-11 07:24:36 +05:30
acpi-dma.c acpi-dma: remove ugly conversion 2013-08-25 16:43:45 +05:30
amba-pl08x.c DMA-API: dma: pl08x: add dma_set_mask_and_coherent() call 2013-10-31 14:48:39 +00:00
at_hdmac_regs.h DMA: AT91: Get residual bytes in dma buffer 2013-07-05 11:40:31 +05:30
at_hdmac.c dmaengine: at_hdmac: prepare clk before calling enable 2013-07-05 11:40:57 +05:30
coh901318_lli.c Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2013-02-26 09:24:48 -08:00
coh901318.c coh901318: don't open-code simple_read_from_buffer() 2013-09-03 22:52:46 -04:00
coh901318.h dma: coh901318: merge header files 2013-01-07 17:36:37 +01:00
cppi41.c dma: cppi41: off by one in desc_to_chan() 2013-08-28 15:46:33 -07:00
dma-jz4740.c MIPS: jz4740: Remove custom DMA API 2013-07-05 11:40:52 +05:30
dmaengine.c Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma 2013-09-10 13:37:36 -07:00
dmaengine.h dmaengine: consolidate initialization of cookies 2012-03-13 11:37:22 +05:30
dmatest.c dmatest: print message on debug level in case of no error 2013-08-22 22:57:35 -07:00
edma.c Merge branch 'for-linus-dma-masks' of git://git.linaro.org/people/rmk/linux-arm 2013-11-14 07:55:21 +09:00
ep93xx_dma.c ep93xx_dma: remove useless use of lock 2013-08-05 09:32:24 +05:30
fsldma.c drivers: clean-up prom.h implicit includes 2013-10-09 20:04:04 -05:00
fsldma.h dmaengine: move last completed cookie into generic dma_chan structure 2012-03-13 11:36:06 +05:30
imx-dma.c dmaengine: imx-dma: fix callback path in tasklet 2013-10-04 14:35:03 +05:30
imx-sdma.c ARM: 7857/1: dma: imx-sdma: setup dma mask 2013-10-31 14:49:19 +00:00
intel_mid_dma_regs.h dma: fix comments 2012-09-01 08:57:12 -07:00
intel_mid_dma.c PM / Runtime: Rework the "runtime idle" helper routine 2013-06-03 21:49:52 +02:00
iop-adma.c dma: use dev_get_platdata() 2013-08-13 16:56:41 +05:30
iovlock.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
k3dma.c dma: k3dma: use devm_ioremap_resource() instead of devm_request_and_ioremap() 2013-09-02 17:35:34 +05:30
Kconfig ARM: driver updates for 3.13 2013-11-11 17:05:37 +09:00
Makefile dmaengine: add driver for Samsung s3c24xx SoCs 2013-10-08 06:42:10 +09:00
mmp_pdma.c dma: mmp_pdma: set DMA_PRIVATE 2013-08-25 22:04:53 +05:30
mmp_tdma.c drivers/dma/mmp_tdma.c: use gen_pool_dma_alloc() to allocate descriptor 2013-11-13 12:09:23 +09:00
mpc512x_dma.c drivers: clean-up prom.h implicit includes 2013-10-09 20:04:04 -05:00
mv_xor.c Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma 2013-09-10 13:37:36 -07:00
mv_xor.h mv_xor: support big endian systems using descriptor swap feature 2013-08-22 22:57:37 -07:00
mxs-dma.c dma: mxs-dma: remove code left from generic DMA binding conversion 2013-08-19 14:20:21 +05:30
of-dma.c dma: of: make error message more meaningful by adding the node name 2013-08-19 14:45:05 +05:30
omap-dma.c dmaengine: OMAP: Register SDMA controller with Device Tree DMA driver 2013-04-15 09:51:19 +05:30
pch_dma.c pch_dma: Add MODULE_DEVICE_TABLE 2013-09-02 11:59:58 +05:30
pl330.c DMA-API: dma: pl330: add dma_set_mask_and_coherent() call 2013-10-31 14:48:41 +00:00
s3c24xx-dma.c dmaengine: s3c24xx-dma: add support for the s3c2410 type of controller 2013-10-21 05:32:48 +09:00
sa11x0-dma.c Drivers: dma: remove __dev* attributes. 2013-01-03 15:57:15 -08:00
sirf-dma.c dmaengine: sirf: add PM entries for sleep and runtime 2013-08-13 17:01:01 +05:30
ste_dma40_ll.c dmaengine: ste_dma40_ll: Replace meaningless register set with comment 2013-06-04 11:12:10 +02:00
ste_dma40_ll.h dmaengine: ste_dma40: Remove unnecessary call to d40_phy_cfg() 2013-05-23 21:13:19 +02:00
ste_dma40.c dma: ste_dma40: Fix potential null pointer dereference 2013-09-02 17:36:00 +05:30
tegra20-apb-dma.c tegra20-apb-dma: remove useless use of lock 2013-08-05 09:32:25 +05:30
timb_dma.c dma: use dev_get_platdata() 2013-08-13 16:56:41 +05:30
TODO dmaengine: remove ste_dma40 from issue_pending TODO 2011-07-14 04:02:08 +05:30
txx9dmac.c dma: use dev_get_platdata() 2013-08-13 16:56:41 +05:30
txx9dmac.h dmaengine: move last completed cookie into generic dma_chan structure 2012-03-13 11:36:06 +05:30
virt-dma.c dmaengine: virt-dma: add support for cyclic DMA periodic callbacks 2012-07-01 14:15:23 +01:00
virt-dma.h dmaengine: virt-dma: add support for cyclic DMA periodic callbacks 2012-07-01 14:15:23 +01:00