| Message ID | 20190326070415.11492-2-drake@endlessm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/2] mmc: alcor: don't write data before command has completed | expand |
On Tue, 26 Mar 2019 at 08:04, Daniel Drake <drake@endlessm.com> wrote: > > Enable the DMA codepath for writes as well as reads. > This improves write speed from 1mb/sec to 2mb/sec (tested with dd). > > The original ampe_stor vendor driver also uses DMA for writes. > > Signed-off-by: Daniel Drake <drake@endlessm.com> Applied for next, thanks! Kind regards Uffe > --- > drivers/mmc/host/alcor.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/mmc/host/alcor.c b/drivers/mmc/host/alcor.c > index 7c8f203f9a24d..3e2efbf3cf8cd 100644 > --- a/drivers/mmc/host/alcor.c > +++ b/drivers/mmc/host/alcor.c > @@ -771,7 +771,8 @@ static void alcor_pre_req(struct mmc_host *mmc, > data->host_cookie = COOKIE_UNMAPPED; > > /* FIXME: looks like the DMA engine works only with CMD18 */ > - if (cmd->opcode != 18) > + if (cmd->opcode != MMC_READ_MULTIPLE_BLOCK > + && cmd->opcode != MMC_WRITE_MULTIPLE_BLOCK) > return; > /* > * We don't do DMA on "complex" transfers, i.e. with > -- > 2.19.1 >
diff --git a/drivers/mmc/host/alcor.c b/drivers/mmc/host/alcor.c index 7c8f203f9a24d..3e2efbf3cf8cd 100644 --- a/drivers/mmc/host/alcor.c +++ b/drivers/mmc/host/alcor.c @@ -771,7 +771,8 @@ static void alcor_pre_req(struct mmc_host *mmc, data->host_cookie = COOKIE_UNMAPPED; /* FIXME: looks like the DMA engine works only with CMD18 */ - if (cmd->opcode != 18) + if (cmd->opcode != MMC_READ_MULTIPLE_BLOCK + && cmd->opcode != MMC_WRITE_MULTIPLE_BLOCK) return; /* * We don't do DMA on "complex" transfers, i.e. with
Enable the DMA codepath for writes as well as reads. This improves write speed from 1mb/sec to 2mb/sec (tested with dd). The original ampe_stor vendor driver also uses DMA for writes. Signed-off-by: Daniel Drake <drake@endlessm.com> --- drivers/mmc/host/alcor.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)