diff options
| author | Tony Lin <tony.lin@freescale.com> | 2012-02-27 15:53:02 +0800 |
|---|---|---|
| committer | Eric Nelson <eric.nelson@boundarydevices.com> | 2012-08-28 09:44:10 -0700 |
| commit | f8e33745fdefd78a81d4cb28b6a08ddc14d867df (patch) | |
| tree | 092a89f01d62a4558c01fbc5ee7c54a4c199ba7a /include | |
| parent | 30e2bf1de9bed47e691b4fbc40e6cb91f2d6fc7a (diff) | |
ENGR00175864 [MMC]pipeline mmc requests
the patch is based on a series of patches by Per Forlin
the patch is sdhci host side implementation.
using a toshiba SDHC3.0 card, the performance increases
from 48.5MB/s to 52.4MB/s.
cmd: dd if=/dev/mmcblk0 of=/dev/null bs=1M count=500
the performance results running@1GHz, 200MHz CPU freq are:
52.4MB/s -> 20.7MB/s
Signed-off-by: Tony Lin <tony.lin@freescale.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mmc/sdhci.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h index d73ed4622881..d9dca2739cb5 100644 --- a/include/linux/mmc/sdhci.h +++ b/include/linux/mmc/sdhci.h @@ -17,6 +17,11 @@ #include <linux/io.h> #include <linux/mmc/host.h> +struct sdhci_host_next { + unsigned int dma_len; + s32 cookie; +}; + struct sdhci_host { /* Data set by hardware interface driver */ const char *hw_name; /* Hardware bus name */ @@ -166,6 +171,7 @@ struct sdhci_host { struct delayed_work clk_worker; /* Clock delayed worker */ unsigned int clk_mgr_en; unsigned int clk_status; + struct sdhci_host_next next_data; unsigned long private[0] ____cacheline_aligned; }; #endif /* __SDHCI_H */ |