[dpdk-dev] [PATCH v1 1/2] eal/x86: add WC store function

[Jerin Jacob]

On Thu, Jun 11, 2020 at 7:26 PM Nicolau, Radu <radu.nicolau at intel.com> wrote:
>
>
> On 6/11/2020 1:23 PM, Jerin Jacob wrote:
> > On Thu, Jun 11, 2020 at 3:41 PM Radu Nicolau <radu.nicolau at intel.com> wrote:
> >> Add rte_write32_wc function that implements a WC store
> >> using movdiri instruction.
> >>
> >> Signed-off-by: Radu Nicolau <radu.nicolau at intel.com>
> >> ---
> >>   lib/librte_eal/x86/include/rte_io.h | 20 ++++++++++++++++++++
> >>   1 file changed, 20 insertions(+)
> >>
> >> diff --git a/lib/librte_eal/x86/include/rte_io.h b/lib/librte_eal/x86/include/rte_io.h
> >> index 2db71b1..3d74bec 100644
> >> --- a/lib/librte_eal/x86/include/rte_io.h
> >> +++ b/lib/librte_eal/x86/include/rte_io.h
> >> @@ -11,6 +11,26 @@ extern "C" {
> >>
> >>   #include "generic/rte_io.h"
> >>
> >> +/**
> >> + * Write a 32-bit value to I/O device memory address *addr*.
> >> + * Uses MOVDIRI instruction to perform a direct-store operation using WC
> >> + * memory write protocol.
> > It will be an x86 specific API, Please change the API name to reflect that.
> >
> You mean something like rte_x86_write32_wc?

Yes. Something like that...