diff mbox

[RFC/Patch,1/5] Remove old enum definition of "Translate Spa"

Message ID 20170804180655.27BF.E1E9C6FF@jp.fujitsu.com (mailing list archive)
State New, archived
Headers show

Commit Message

Gotou, Yasunori/五島 康文 Aug. 4, 2017, 9:06 a.m. UTC
Remove old enum definition of "Translate Spa".

Translate SPA becomes standard specification on ACPI 6.2,
but current definition is likely temporary.
So it is removed.

Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>


---
 drivers/acpi/nfit/core.c | 2 --
 1 file changed, 2 deletions(-)

Comments

Dan Williams Aug. 4, 2017, 11:09 p.m. UTC | #1
On Fri, Aug 4, 2017 at 2:06 AM, Yasunori Goto <y-goto@jp.fujitsu.com> wrote:
>
> Remove old enum definition of "Translate Spa".
>
> Translate SPA becomes standard specification on ACPI 6.2,
> but current definition is likely temporary.
> So it is removed.
>
> Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
>
>
> ---
>  drivers/acpi/nfit/core.c | 2 --
>  1 file changed, 2 deletions(-)
>
> diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
> index 19182d0..5334755 100644
> --- a/drivers/acpi/nfit/core.c
> +++ b/drivers/acpi/nfit/core.c
> @@ -1626,7 +1626,6 @@ static int acpi_nfit_register_dimms(struct acpi_nfit_desc *acpi_desc)
>   * these commands.
>   */
>  enum nfit_aux_cmds {
> -        NFIT_CMD_TRANSLATE_SPA = 5,
>          NFIT_CMD_ARS_INJECT_SET = 7,
>          NFIT_CMD_ARS_INJECT_CLEAR = 8,
>          NFIT_CMD_ARS_INJECT_GET = 9,
> @@ -1655,7 +1654,6 @@ static void acpi_nfit_init_dsms(struct acpi_nfit_desc *acpi_desc)
>                 (1 << ND_CMD_ARS_START) |
>                 (1 << ND_CMD_ARS_STATUS) |
>                 (1 << ND_CMD_CLEAR_ERROR) |
> -               (1 << NFIT_CMD_TRANSLATE_SPA) |
>                 (1 << NFIT_CMD_ARS_INJECT_SET) |
>                 (1 << NFIT_CMD_ARS_INJECT_CLEAR) |
>                 (1 << NFIT_CMD_ARS_INJECT_GET);

Hmm, those definitions are brand new as of the 4.13 kernel, see commit
7db5bb33add5 "libnvdimm, acpi, nfit: Add bus level dsm mask for pass
thru". What's going on here is that we stopped defining new ND_CMD
numbers for each new DSM that is added to the specification. Instead,
we use the ND_CMD_CALL mechanism to wrap these new command payloads
and pass them through to the BIOS. So, these definitions are needed to
allow that passthrough mechanism to work.
Gotou, Yasunori/五島 康文 Aug. 7, 2017, 12:03 a.m. UTC | #2
> On Fri, Aug 4, 2017 at 2:06 AM, Yasunori Goto <y-goto@jp.fujitsu.com> wrote:
> >
> > Remove old enum definition of "Translate Spa".
> >
> > Translate SPA becomes standard specification on ACPI 6.2,
> > but current definition is likely temporary.
> > So it is removed.
> >
> > Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
> >
> >
> > ---
> >  drivers/acpi/nfit/core.c | 2 --
> >  1 file changed, 2 deletions(-)
> >
> > diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
> > index 19182d0..5334755 100644
> > --- a/drivers/acpi/nfit/core.c
> > +++ b/drivers/acpi/nfit/core.c
> > @@ -1626,7 +1626,6 @@ static int acpi_nfit_register_dimms(struct acpi_nfit_desc *acpi_desc)
> >   * these commands.
> >   */
> >  enum nfit_aux_cmds {
> > -        NFIT_CMD_TRANSLATE_SPA = 5,
> >          NFIT_CMD_ARS_INJECT_SET = 7,
> >          NFIT_CMD_ARS_INJECT_CLEAR = 8,
> >          NFIT_CMD_ARS_INJECT_GET = 9,
> > @@ -1655,7 +1654,6 @@ static void acpi_nfit_init_dsms(struct acpi_nfit_desc *acpi_desc)
> >                 (1 << ND_CMD_ARS_START) |
> >                 (1 << ND_CMD_ARS_STATUS) |
> >                 (1 << ND_CMD_CLEAR_ERROR) |
> > -               (1 << NFIT_CMD_TRANSLATE_SPA) |
> >                 (1 << NFIT_CMD_ARS_INJECT_SET) |
> >                 (1 << NFIT_CMD_ARS_INJECT_CLEAR) |
> >                 (1 << NFIT_CMD_ARS_INJECT_GET);
> 
> Hmm, those definitions are brand new as of the 4.13 kernel, see commit
> 7db5bb33add5 "libnvdimm, acpi, nfit: Add bus level dsm mask for pass
> thru". What's going on here is that we stopped defining new ND_CMD
> numbers for each new DSM that is added to the specification. Instead,
> we use the ND_CMD_CALL mechanism to wrap these new command payloads
> and pass them through to the BIOS. So, these definitions are needed to
> allow that passthrough mechanism to work.

Ah, Ok.
I'll check it.


Thanks,
diff mbox

Patch

diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 19182d0..5334755 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -1626,7 +1626,6 @@  static int acpi_nfit_register_dimms(struct acpi_nfit_desc *acpi_desc)
  * these commands.
  */
 enum nfit_aux_cmds {
-        NFIT_CMD_TRANSLATE_SPA = 5,
         NFIT_CMD_ARS_INJECT_SET = 7,
         NFIT_CMD_ARS_INJECT_CLEAR = 8,
         NFIT_CMD_ARS_INJECT_GET = 9,
@@ -1655,7 +1654,6 @@  static void acpi_nfit_init_dsms(struct acpi_nfit_desc *acpi_desc)
 		(1 << ND_CMD_ARS_START) |
 		(1 << ND_CMD_ARS_STATUS) |
 		(1 << ND_CMD_CLEAR_ERROR) |
-		(1 << NFIT_CMD_TRANSLATE_SPA) |
 		(1 << NFIT_CMD_ARS_INJECT_SET) |
 		(1 << NFIT_CMD_ARS_INJECT_CLEAR) |
 		(1 << NFIT_CMD_ARS_INJECT_GET);