[v2,1/3] firmware: arm_scmi: Refactor powercap get/set helpers
Commit Message
Refactor SCMI powercap internal get/set helpers.
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
---
drivers/firmware/arm_scmi/powercap.c | 65 +++++++++++++++++++---------
1 file changed, 45 insertions(+), 20 deletions(-)
Comments
On Thu, Mar 9, 2023 at 3:09 PM Cristian Marussi
<cristian.marussi@arm.com> wrote:
>
> Refactor SCMI powercap internal get/set helpers.
>
> Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
I can apply this series if I get an ACK or preferably Reviewed-by:
from an SCMI person.
However, I think that it would be more appropriate to route it through
ARM/ARM64 anyway.
> ---
> drivers/firmware/arm_scmi/powercap.c | 65 +++++++++++++++++++---------
> 1 file changed, 45 insertions(+), 20 deletions(-)
>
> diff --git a/drivers/firmware/arm_scmi/powercap.c b/drivers/firmware/arm_scmi/powercap.c
> index 83b90bde755c..2e490492f187 100644
> --- a/drivers/firmware/arm_scmi/powercap.c
> +++ b/drivers/firmware/arm_scmi/powercap.c
> @@ -313,24 +313,33 @@ static int scmi_powercap_xfer_cap_get(const struct scmi_protocol_handle *ph,
> return ret;
> }
>
> -static int scmi_powercap_cap_get(const struct scmi_protocol_handle *ph,
> - u32 domain_id, u32 *power_cap)
> +static int __scmi_powercap_cap_get(const struct scmi_protocol_handle *ph,
> + const struct scmi_powercap_info *dom,
> + u32 *power_cap)
> {
> - struct scmi_powercap_info *dom;
> - struct powercap_info *pi = ph->get_priv(ph);
> -
> - if (!power_cap || domain_id >= pi->num_domains)
> - return -EINVAL;
> -
> - dom = pi->powercaps + domain_id;
> if (dom->fc_info && dom->fc_info[POWERCAP_FC_CAP].get_addr) {
> *power_cap = ioread32(dom->fc_info[POWERCAP_FC_CAP].get_addr);
> trace_scmi_fc_call(SCMI_PROTOCOL_POWERCAP, POWERCAP_CAP_GET,
> - domain_id, *power_cap, 0);
> + dom->id, *power_cap, 0);
> return 0;
> }
>
> - return scmi_powercap_xfer_cap_get(ph, domain_id, power_cap);
> + return scmi_powercap_xfer_cap_get(ph, dom->id, power_cap);
> +}
> +
> +static int scmi_powercap_cap_get(const struct scmi_protocol_handle *ph,
> + u32 domain_id, u32 *power_cap)
> +{
> + const struct scmi_powercap_info *dom;
> +
> + if (!power_cap)
> + return -EINVAL;
> +
> + dom = scmi_powercap_dom_info_get(ph, domain_id);
> + if (!dom)
> + return -EINVAL;
> +
> + return __scmi_powercap_cap_get(ph, dom, power_cap);
> }
>
> static int scmi_powercap_xfer_cap_set(const struct scmi_protocol_handle *ph,
> @@ -375,17 +384,20 @@ static int scmi_powercap_xfer_cap_set(const struct scmi_protocol_handle *ph,
> return ret;
> }
>
> -static int scmi_powercap_cap_set(const struct scmi_protocol_handle *ph,
> - u32 domain_id, u32 power_cap,
> - bool ignore_dresp)
> +static int __scmi_powercap_cap_set(const struct scmi_protocol_handle *ph,
> + struct powercap_info *pi, u32 domain_id,
> + u32 power_cap, bool ignore_dresp)
> {
> + int ret = -EINVAL;
> const struct scmi_powercap_info *pc;
>
> pc = scmi_powercap_dom_info_get(ph, domain_id);
> - if (!pc || !pc->powercap_cap_config || !power_cap ||
> - power_cap < pc->min_power_cap ||
> - power_cap > pc->max_power_cap)
> - return -EINVAL;
> + if (!pc || !pc->powercap_cap_config)
> + return ret;
> +
> + if (power_cap &&
> + (power_cap < pc->min_power_cap || power_cap > pc->max_power_cap))
> + return ret;
>
> if (pc->fc_info && pc->fc_info[POWERCAP_FC_CAP].set_addr) {
> struct scmi_fc_info *fci = &pc->fc_info[POWERCAP_FC_CAP];
> @@ -394,10 +406,23 @@ static int scmi_powercap_cap_set(const struct scmi_protocol_handle *ph,
> ph->hops->fastchannel_db_ring(fci->set_db);
> trace_scmi_fc_call(SCMI_PROTOCOL_POWERCAP, POWERCAP_CAP_SET,
> domain_id, power_cap, 0);
> - return 0;
> + ret = 0;
> + } else {
> + ret = scmi_powercap_xfer_cap_set(ph, pc, power_cap,
> + ignore_dresp);
> }
>
> - return scmi_powercap_xfer_cap_set(ph, pc, power_cap, ignore_dresp);
> + return ret;
> +}
> +
> +static int scmi_powercap_cap_set(const struct scmi_protocol_handle *ph,
> + u32 domain_id, u32 power_cap,
> + bool ignore_dresp)
> +{
> + struct powercap_info *pi = ph->get_priv(ph);
> +
> + return __scmi_powercap_cap_set(ph, pi, domain_id,
> + power_cap, ignore_dresp);
> }
>
> static int scmi_powercap_xfer_pai_get(const struct scmi_protocol_handle *ph,
> --
> 2.34.1
>
On Mon, Mar 27, 2023 at 07:06:36PM +0200, Rafael J. Wysocki wrote:
> On Thu, Mar 9, 2023 at 3:09 PM Cristian Marussi
> <cristian.marussi@arm.com> wrote:
> >
> > Refactor SCMI powercap internal get/set helpers.
> >
> > Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
>
Hi Rafael,
Thanks for having a look.
> I can apply this series if I get an ACK or preferably Reviewed-by:
> from an SCMI person.
>
I'll see if I can chase someone for this cycle :D
> However, I think that it would be more appropriate to route it through
> ARM/ARM64 anyway.
>
Yes, indeed it is what usually happens I think, but I thought
appropriate to Cc you being power related.
Thanks,
Cristian
On Mon, Mar 27, 2023 at 07:06:36PM +0200, Rafael J. Wysocki wrote:
> On Thu, Mar 9, 2023 at 3:09 PM Cristian Marussi
> <cristian.marussi@arm.com> wrote:
> >
> > Refactor SCMI powercap internal get/set helpers.
> >
> > Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
>
> I can apply this series if I get an ACK or preferably Reviewed-by:
> from an SCMI person.
>
Sorry, I had looked at this and just delayed asking you about your preference.
I am fine to take it or else
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> (for SCMI parts)
Please ack 3/3 if you prefer me to take it once you are happy with it.
On Wed, Mar 29, 2023 at 2:05 PM Sudeep Holla <sudeep.holla@arm.com> wrote:
>
> On Mon, Mar 27, 2023 at 07:06:36PM +0200, Rafael J. Wysocki wrote:
> > On Thu, Mar 9, 2023 at 3:09 PM Cristian Marussi
> > <cristian.marussi@arm.com> wrote:
> > >
> > > Refactor SCMI powercap internal get/set helpers.
> > >
> > > Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
> >
> > I can apply this series if I get an ACK or preferably Reviewed-by:
> > from an SCMI person.
> >
>
> Sorry, I had looked at this and just delayed asking you about your preference.
> I am fine to take it
Yes, please!
> or else
>
> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> (for SCMI parts)
>
> Please ack 3/3 if you prefer me to take it once you are happy with it.
Done, thanks!
@@ -313,24 +313,33 @@ static int scmi_powercap_xfer_cap_get(const struct scmi_protocol_handle *ph,
return ret;
}
-static int scmi_powercap_cap_get(const struct scmi_protocol_handle *ph,
- u32 domain_id, u32 *power_cap)
+static int __scmi_powercap_cap_get(const struct scmi_protocol_handle *ph,
+ const struct scmi_powercap_info *dom,
+ u32 *power_cap)
{
- struct scmi_powercap_info *dom;
- struct powercap_info *pi = ph->get_priv(ph);
-
- if (!power_cap || domain_id >= pi->num_domains)
- return -EINVAL;
-
- dom = pi->powercaps + domain_id;
if (dom->fc_info && dom->fc_info[POWERCAP_FC_CAP].get_addr) {
*power_cap = ioread32(dom->fc_info[POWERCAP_FC_CAP].get_addr);
trace_scmi_fc_call(SCMI_PROTOCOL_POWERCAP, POWERCAP_CAP_GET,
- domain_id, *power_cap, 0);
+ dom->id, *power_cap, 0);
return 0;
}
- return scmi_powercap_xfer_cap_get(ph, domain_id, power_cap);
+ return scmi_powercap_xfer_cap_get(ph, dom->id, power_cap);
+}
+
+static int scmi_powercap_cap_get(const struct scmi_protocol_handle *ph,
+ u32 domain_id, u32 *power_cap)
+{
+ const struct scmi_powercap_info *dom;
+
+ if (!power_cap)
+ return -EINVAL;
+
+ dom = scmi_powercap_dom_info_get(ph, domain_id);
+ if (!dom)
+ return -EINVAL;
+
+ return __scmi_powercap_cap_get(ph, dom, power_cap);
}
static int scmi_powercap_xfer_cap_set(const struct scmi_protocol_handle *ph,
@@ -375,17 +384,20 @@ static int scmi_powercap_xfer_cap_set(const struct scmi_protocol_handle *ph,
return ret;
}
-static int scmi_powercap_cap_set(const struct scmi_protocol_handle *ph,
- u32 domain_id, u32 power_cap,
- bool ignore_dresp)
+static int __scmi_powercap_cap_set(const struct scmi_protocol_handle *ph,
+ struct powercap_info *pi, u32 domain_id,
+ u32 power_cap, bool ignore_dresp)
{
+ int ret = -EINVAL;
const struct scmi_powercap_info *pc;
pc = scmi_powercap_dom_info_get(ph, domain_id);
- if (!pc || !pc->powercap_cap_config || !power_cap ||
- power_cap < pc->min_power_cap ||
- power_cap > pc->max_power_cap)
- return -EINVAL;
+ if (!pc || !pc->powercap_cap_config)
+ return ret;
+
+ if (power_cap &&
+ (power_cap < pc->min_power_cap || power_cap > pc->max_power_cap))
+ return ret;
if (pc->fc_info && pc->fc_info[POWERCAP_FC_CAP].set_addr) {
struct scmi_fc_info *fci = &pc->fc_info[POWERCAP_FC_CAP];
@@ -394,10 +406,23 @@ static int scmi_powercap_cap_set(const struct scmi_protocol_handle *ph,
ph->hops->fastchannel_db_ring(fci->set_db);
trace_scmi_fc_call(SCMI_PROTOCOL_POWERCAP, POWERCAP_CAP_SET,
domain_id, power_cap, 0);
- return 0;
+ ret = 0;
+ } else {
+ ret = scmi_powercap_xfer_cap_set(ph, pc, power_cap,
+ ignore_dresp);
}
- return scmi_powercap_xfer_cap_set(ph, pc, power_cap, ignore_dresp);
+ return ret;
+}
+
+static int scmi_powercap_cap_set(const struct scmi_protocol_handle *ph,
+ u32 domain_id, u32 power_cap,
+ bool ignore_dresp)
+{
+ struct powercap_info *pi = ph->get_priv(ph);
+
+ return __scmi_powercap_cap_set(ph, pi, domain_id,
+ power_cap, ignore_dresp);
}
static int scmi_powercap_xfer_pai_get(const struct scmi_protocol_handle *ph,