| Message ID | 20221011212501.2661003-5-tanmay.shah@amd.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add Xilinx RPU subsystem support | expand |
On 10/11/22 23:24, Tanmay Shah wrote: > From: Ben Levinsky <ben.levinsky@amd.com> > > Add shutdown/wakeup a resource eemi operations to shutdown > or bringup a resource. > > Note alignment of args matches convention of other fn's in this file. > The reason being that the long fn name results in aligned args that > otherwise go over 80 chars so shift right to avoid this > > Signed-off-by: Ben Levinsky <ben.levinsky@amd.com> > Signed-off-by: Tanmay Shah <tanmay.shah@amd.com> > --- > > Changes in v10: > - None > > Changes in v9: > - None > > Changes in v8: > - None > > Changes in v7: > - None > > Changes in v6: > - None > > Changes in v5: > - None > > Changes in v4: > - None > > Changes in v3: > - None > > drivers/firmware/xilinx/zynqmp.c | 35 ++++++++++++++++++++++++++++ > include/linux/firmware/xlnx-zynqmp.h | 23 ++++++++++++++++++ > 2 files changed, 58 insertions(+) > > diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c > index d1f652802181..edb13167170f 100644 > --- a/drivers/firmware/xilinx/zynqmp.c > +++ b/drivers/firmware/xilinx/zynqmp.c > @@ -1159,6 +1159,41 @@ int zynqmp_pm_release_node(const u32 node) > } > EXPORT_SYMBOL_GPL(zynqmp_pm_release_node); > > +/** > + * zynqmp_pm_force_pwrdwn - PM call to request for another PU or subsystem to > + * be powered down forcefully > + * @node: Node ID of the targeted PU or subsystem > + * @ack: Flag to specify whether acknowledge is requested > + * > + * Return: status, either success or error+reason > + */ > +int zynqmp_pm_force_pwrdwn(const u32 node, > + const enum zynqmp_pm_request_ack ack) > +{ > + return zynqmp_pm_invoke_fn(PM_FORCE_POWERDOWN, node, ack, 0, 0, NULL); > +} > +EXPORT_SYMBOL_GPL(zynqmp_pm_force_pwrdwn); > + > +/** > + * zynqmp_pm_request_wake - PM call to wake up selected master or subsystem > + * @node: Node ID of the master or subsystem > + * @set_addr: Specifies whether the address argument is relevant > + * @address: Address from which to resume when woken up > + * @ack: Flag to specify whether acknowledge requested > + * > + * Return: status, either success or error+reason > + */ > +int zynqmp_pm_request_wake(const u32 node, > + const bool set_addr, > + const u64 address, > + const enum zynqmp_pm_request_ack ack) > +{ > + /* set_addr flag is encoded into 1st bit of address */ > + return zynqmp_pm_invoke_fn(PM_REQUEST_WAKEUP, node, address | set_addr, > + address >> 32, ack, NULL); > +} > +EXPORT_SYMBOL_GPL(zynqmp_pm_request_wake); > + > /** > * zynqmp_pm_set_requirement() - PM call to set requirement for PM slaves > * @node: Node ID of the slave > diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h > index e00a25aa2c17..d52f8413b892 100644 > --- a/include/linux/firmware/xlnx-zynqmp.h > +++ b/include/linux/firmware/xlnx-zynqmp.h > @@ -12,6 +12,7 @@ > > #ifndef __FIRMWARE_ZYNQMP_H__ > #define __FIRMWARE_ZYNQMP_H__ > +#include <linux/types.h> > > #include <linux/err.h> > > @@ -87,6 +88,8 @@ enum pm_api_cb_id { > enum pm_api_id { > PM_GET_API_VERSION = 1, > PM_REGISTER_NOTIFIER = 5, > + PM_FORCE_POWERDOWN = 8, > + PM_REQUEST_WAKEUP = 10, > PM_SYSTEM_SHUTDOWN = 12, > PM_REQUEST_NODE = 13, > PM_RELEASE_NODE = 14, > @@ -494,6 +497,12 @@ int zynqmp_pm_is_function_supported(const u32 api_id, const u32 id); > int zynqmp_pm_set_feature_config(enum pm_feature_config_id id, u32 value); > int zynqmp_pm_get_feature_config(enum pm_feature_config_id id, u32 *payload); > int zynqmp_pm_register_sgi(u32 sgi_num, u32 reset); > +int zynqmp_pm_force_pwrdwn(const u32 target, > + const enum zynqmp_pm_request_ack ack); > +int zynqmp_pm_request_wake(const u32 node, > + const bool set_addr, > + const u64 address, > + const enum zynqmp_pm_request_ack ack); > #else > static inline int zynqmp_pm_get_api_version(u32 *version) > { > @@ -764,6 +773,20 @@ static inline int zynqmp_pm_register_sgi(u32 sgi_num, u32 reset) > { > return -ENODEV; > } > + > +static inline int zynqmp_pm_force_pwrdwn(const u32 target, > + const enum zynqmp_pm_request_ack ack) > +{ > + return -ENODEV; > +} > + > +static inline int zynqmp_pm_request_wake(const u32 node, > + const bool set_addr, > + const u64 address, > + const enum zynqmp_pm_request_ack ack) > +{ > + return -ENODEV; > +} > #endif > > #endif /* __FIRMWARE_ZYNQMP_H__ */ Acked-by: Michal Simek <michal.simek@amd.com> M
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c index d1f652802181..edb13167170f 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -1159,6 +1159,41 @@ int zynqmp_pm_release_node(const u32 node) } EXPORT_SYMBOL_GPL(zynqmp_pm_release_node); +/** + * zynqmp_pm_force_pwrdwn - PM call to request for another PU or subsystem to + * be powered down forcefully + * @node: Node ID of the targeted PU or subsystem + * @ack: Flag to specify whether acknowledge is requested + * + * Return: status, either success or error+reason + */ +int zynqmp_pm_force_pwrdwn(const u32 node, + const enum zynqmp_pm_request_ack ack) +{ + return zynqmp_pm_invoke_fn(PM_FORCE_POWERDOWN, node, ack, 0, 0, NULL); +} +EXPORT_SYMBOL_GPL(zynqmp_pm_force_pwrdwn); + +/** + * zynqmp_pm_request_wake - PM call to wake up selected master or subsystem + * @node: Node ID of the master or subsystem + * @set_addr: Specifies whether the address argument is relevant + * @address: Address from which to resume when woken up + * @ack: Flag to specify whether acknowledge requested + * + * Return: status, either success or error+reason + */ +int zynqmp_pm_request_wake(const u32 node, + const bool set_addr, + const u64 address, + const enum zynqmp_pm_request_ack ack) +{ + /* set_addr flag is encoded into 1st bit of address */ + return zynqmp_pm_invoke_fn(PM_REQUEST_WAKEUP, node, address | set_addr, + address >> 32, ack, NULL); +} +EXPORT_SYMBOL_GPL(zynqmp_pm_request_wake); + /** * zynqmp_pm_set_requirement() - PM call to set requirement for PM slaves * @node: Node ID of the slave diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h index e00a25aa2c17..d52f8413b892 100644 --- a/include/linux/firmware/xlnx-zynqmp.h +++ b/include/linux/firmware/xlnx-zynqmp.h @@ -12,6 +12,7 @@ #ifndef __FIRMWARE_ZYNQMP_H__ #define __FIRMWARE_ZYNQMP_H__ +#include <linux/types.h> #include <linux/err.h> @@ -87,6 +88,8 @@ enum pm_api_cb_id { enum pm_api_id { PM_GET_API_VERSION = 1, PM_REGISTER_NOTIFIER = 5, + PM_FORCE_POWERDOWN = 8, + PM_REQUEST_WAKEUP = 10, PM_SYSTEM_SHUTDOWN = 12, PM_REQUEST_NODE = 13, PM_RELEASE_NODE = 14, @@ -494,6 +497,12 @@ int zynqmp_pm_is_function_supported(const u32 api_id, const u32 id); int zynqmp_pm_set_feature_config(enum pm_feature_config_id id, u32 value); int zynqmp_pm_get_feature_config(enum pm_feature_config_id id, u32 *payload); int zynqmp_pm_register_sgi(u32 sgi_num, u32 reset); +int zynqmp_pm_force_pwrdwn(const u32 target, + const enum zynqmp_pm_request_ack ack); +int zynqmp_pm_request_wake(const u32 node, + const bool set_addr, + const u64 address, + const enum zynqmp_pm_request_ack ack); #else static inline int zynqmp_pm_get_api_version(u32 *version) { @@ -764,6 +773,20 @@ static inline int zynqmp_pm_register_sgi(u32 sgi_num, u32 reset) { return -ENODEV; } + +static inline int zynqmp_pm_force_pwrdwn(const u32 target, + const enum zynqmp_pm_request_ack ack) +{ + return -ENODEV; +} + +static inline int zynqmp_pm_request_wake(const u32 node, + const bool set_addr, + const u64 address, + const enum zynqmp_pm_request_ack ack) +{ + return -ENODEV; +} #endif #endif /* __FIRMWARE_ZYNQMP_H__ */