diff options
author | Rafał Miłecki <zajec5@gmail.com> | 2011-07-20 13:52:15 -0400 |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2011-07-22 09:51:12 -0400 |
commit | 05aec233367262a43dbf0b615099757162e36f88 (patch) | |
tree | cbfd96e2909dac94177db4e9b57c91056c2ad3a8 /drivers/bcma/core.c | |
parent | a9770a815d280d6aa2da406e159eff92b880670e (diff) |
bcma: inform drivers about translation bits needed for the core
When using DMA, drivers need to pass special translation info to the
hardware.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/bcma/core.c')
-rw-r--r-- | drivers/bcma/core.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/bcma/core.c b/drivers/bcma/core.c index 2d8506dbca76..4a04a49cc06d 100644 --- a/drivers/bcma/core.c +++ b/drivers/bcma/core.c | |||
@@ -106,3 +106,19 @@ void bcma_core_pll_ctl(struct bcma_device *core, u32 req, u32 status, bool on) | |||
106 | } | 106 | } |
107 | } | 107 | } |
108 | EXPORT_SYMBOL_GPL(bcma_core_pll_ctl); | 108 | EXPORT_SYMBOL_GPL(bcma_core_pll_ctl); |
109 | |||
110 | u32 bcma_core_dma_translation(struct bcma_device *core) | ||
111 | { | ||
112 | switch (core->bus->hosttype) { | ||
113 | case BCMA_HOSTTYPE_PCI: | ||
114 | if (bcma_aread32(core, BCMA_IOST) & BCMA_IOST_DMA64) | ||
115 | return BCMA_DMA_TRANSLATION_DMA64_CMT; | ||
116 | else | ||
117 | return BCMA_DMA_TRANSLATION_DMA32_CMT; | ||
118 | default: | ||
119 | pr_err("DMA translation unknown for host %d\n", | ||
120 | core->bus->hosttype); | ||
121 | } | ||
122 | return BCMA_DMA_TRANSLATION_NONE; | ||
123 | } | ||
124 | EXPORT_SYMBOL(bcma_core_dma_translation); | ||