diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2014-11-04 12:42:46 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2014-11-10 12:40:53 +0100 |
| commit | e57a5f61eae7e145aeeda18ccb22576822f534bf (patch) | |
| tree | 3ac10196b0713885f85d8fae054f3e867c19c77c /include/linux/mmc | |
| parent | 0545230f1764bc639e14eea3fe944d9d16e91a92 (diff) | |
mmc: sdhci: Add 64-bit ADMA support
Add 64-bit ADMA support including:
- add 64-bit ADMA descriptor
- add SDHCI_USE_64_BIT_DMA flag
- set upper 32-bits of DMA addresses
- ability to select 64-bit ADMA
- ability to use 64-bit ADMA sizes and alignment
- display "ADMA 64-bit" when host is added
It is assumed that a 64-bit capable device has set a 64-bit DMA mask
and *must* do 64-bit DMA. A driver has the opportunity to change
that during the first call to ->enable_dma(). Similarly
SDHCI_QUIRK2_BROKEN_64_BIT_DMA must be left to the drivers to
implement.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'include/linux/mmc')
| -rw-r--r-- | include/linux/mmc/sdhci.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h index 2a72e9510833..931ac5e05453 100644 --- a/include/linux/mmc/sdhci.h +++ b/include/linux/mmc/sdhci.h @@ -100,6 +100,8 @@ struct sdhci_host { #define SDHCI_QUIRK2_BROKEN_DDR50 (1<<7) /* Stop command (CMD12) can set Transfer Complete when not using MMC_RSP_BUSY */ #define SDHCI_QUIRK2_STOP_WITH_TC (1<<8) +/* Controller does not support 64-bit DMA */ +#define SDHCI_QUIRK2_BROKEN_64_BIT_DMA (1<<9) int irq; /* Device IRQ */ void __iomem *ioaddr; /* Mapped address */ @@ -130,6 +132,7 @@ struct sdhci_host { #define SDHCI_SDIO_IRQ_ENABLED (1<<9) /* SDIO irq enabled */ #define SDHCI_SDR104_NEEDS_TUNING (1<<10) /* SDR104/HS200 needs tuning */ #define SDHCI_USING_RETUNING_TIMER (1<<11) /* Host is using a retuning timer for the card */ +#define SDHCI_USE_64_BIT_DMA (1<<12) /* Use 64-bit DMA */ unsigned int version; /* SDHCI spec. version */ |