diff options
| author | Jon Cooper <jcooper@solarflare.com> | 2013-09-02 21:24:29 +0400 |
|---|---|---|
| committer | Ben Hutchings <bhutchings@solarflare.com> | 2013-09-20 22:31:52 +0400 |
| commit | ee45fd92c739db5b7950163d91dfe5f016af6d24 (patch) | |
| tree | 43955c4c76179b0e80449a4a2c3ae0cb77942006 /drivers/net/ethernet/sfc/ef10_regs.h | |
| parent | 0fe5565b64667677a405cf14df49a7af8de4bff4 (diff) | |
| download | linux-ee45fd92c739db5b7950163d91dfe5f016af6d24.tar.xz | |
sfc: Use TX PIO for sufficiently small packets
Sufficiently small linear packets can be copied into the PIO buffer
with a single call to memcpy_toio(). Non-linear packets require an
intermediate cache-line-sized buffer.
[bwh: I wrote the first version of this, but Jon did the hard work to
handle non-linear packets.]
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Diffstat (limited to 'drivers/net/ethernet/sfc/ef10_regs.h')
| -rw-r--r-- | drivers/net/ethernet/sfc/ef10_regs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/ef10_regs.h b/drivers/net/ethernet/sfc/ef10_regs.h index b3f4e3755fd9..207ac9a1e3de 100644 --- a/drivers/net/ethernet/sfc/ef10_regs.h +++ b/drivers/net/ethernet/sfc/ef10_regs.h @@ -315,6 +315,7 @@ #define ESF_DZ_TX_PIO_TYPE_WIDTH 1 #define ESF_DZ_TX_PIO_OPT_LBN 60 #define ESF_DZ_TX_PIO_OPT_WIDTH 3 +#define ESE_DZ_TX_OPTION_DESC_PIO 1 #define ESF_DZ_TX_PIO_CONT_LBN 59 #define ESF_DZ_TX_PIO_CONT_WIDTH 1 #define ESF_DZ_TX_PIO_BYTE_CNT_LBN 32 |