| Message ID | 20221011212501.2661003-6-tanmay.shah@amd.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Add Xilinx RPU subsystem support | expand |
On 10/11/22 23:25, Tanmay Shah wrote: > From: Ben Levinsky <ben.levinsky@amd.com> > > This patch adds APIs to access to configure RPU and its > processor-specific memory. > > That is query the run-time mode of RPU as either split or lockstep as well > as API to set this mode. In addition add APIs to access configuration of > the RPUs' tightly coupled memory (TCM). > > 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: > - Add missing function argument documentation > > drivers/firmware/xilinx/zynqmp.c | 62 ++++++++++++++++++++++++++++ > include/linux/firmware/xlnx-zynqmp.h | 18 ++++++++ > 2 files changed, 80 insertions(+) > > diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c > index edb13167170f..eba359e66414 100644 > --- a/drivers/firmware/xilinx/zynqmp.c > +++ b/drivers/firmware/xilinx/zynqmp.c > @@ -1159,6 +1159,68 @@ int zynqmp_pm_release_node(const u32 node) > } > EXPORT_SYMBOL_GPL(zynqmp_pm_release_node); > > +/** > + * zynqmp_pm_get_rpu_mode() - Get RPU mode > + * @node_id: Node ID of the device > + * @rpu_mode: return by reference value > + * either split or lockstep > + * > + * Return: return 0 on success or error+reason. > + * if success, then rpu_mode will be set > + * to current rpu mode. > + */ > +int zynqmp_pm_get_rpu_mode(u32 node_id, enum rpu_oper_mode *rpu_mode) > +{ > + u32 ret_payload[PAYLOAD_ARG_CNT]; > + int ret; > + > + ret = zynqmp_pm_invoke_fn(PM_IOCTL, node_id, > + IOCTL_GET_RPU_OPER_MODE, 0, 0, ret_payload); > + > + /* only set rpu_mode if no error */ > + if (ret == XST_PM_SUCCESS) > + *rpu_mode = ret_payload[0]; > + > + return ret; > +} > +EXPORT_SYMBOL_GPL(zynqmp_pm_get_rpu_mode); > + > +/** > + * zynqmp_pm_set_rpu_mode() - Set RPU mode > + * @node_id: Node ID of the device > + * @rpu_mode: Argument 1 to requested IOCTL call. either split or lockstep > + * > + * This function is used to set RPU mode to split or > + * lockstep > + * > + * Return: Returns status, either success or error+reason > + */ > +int zynqmp_pm_set_rpu_mode(u32 node_id, enum rpu_oper_mode rpu_mode) > +{ > + return zynqmp_pm_invoke_fn(PM_IOCTL, node_id, > + IOCTL_SET_RPU_OPER_MODE, (u32)rpu_mode, > + 0, NULL); > +} > +EXPORT_SYMBOL_GPL(zynqmp_pm_set_rpu_mode); > + > +/** > + * zynqmp_pm_set_tcm_config - configure TCM > + * @node_id: Firmware specific TCM subsystem ID > + * @tcm_mode: Argument 1 to requested IOCTL call > + * either PM_RPU_TCM_COMB or PM_RPU_TCM_SPLIT > + * > + * This function is used to set RPU mode to split or combined > + * > + * Return: status: 0 for success, else failure > + */ > +int zynqmp_pm_set_tcm_config(u32 node_id, enum rpu_tcm_comb tcm_mode) > +{ > + return zynqmp_pm_invoke_fn(PM_IOCTL, node_id, > + IOCTL_TCM_COMB_CONFIG, (u32)tcm_mode, 0, > + NULL); > +} > +EXPORT_SYMBOL_GPL(zynqmp_pm_set_tcm_config); > + > /** > * zynqmp_pm_force_pwrdwn - PM call to request for another PU or subsystem to > * be powered down forcefully > diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h > index d52f8413b892..83c69c968e32 100644 > --- a/include/linux/firmware/xlnx-zynqmp.h > +++ b/include/linux/firmware/xlnx-zynqmp.h > @@ -503,6 +503,9 @@ int zynqmp_pm_request_wake(const u32 node, > const bool set_addr, > const u64 address, > const enum zynqmp_pm_request_ack ack); > +int zynqmp_pm_get_rpu_mode(u32 node_id, enum rpu_oper_mode *rpu_mode); > +int zynqmp_pm_set_rpu_mode(u32 node_id, u32 arg1); > +int zynqmp_pm_set_tcm_config(u32 node_id, u32 arg1); > #else > static inline int zynqmp_pm_get_api_version(u32 *version) > { > @@ -787,6 +790,21 @@ static inline int zynqmp_pm_request_wake(const u32 node, > { > return -ENODEV; > } > + > +static inline int zynqmp_pm_get_rpu_mode(u32 node_id, enum rpu_oper_mode *rpu_mode) > +{ > + return -ENODEV; > +} > + > +static inline int zynqmp_pm_set_rpu_mode(u32 node_id, u32 arg1) > +{ > + return -ENODEV; > +} > + > +static inline int zynqmp_pm_set_tcm_config(u32 node_id, u32 arg1) > +{ > + 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 edb13167170f..eba359e66414 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -1159,6 +1159,68 @@ int zynqmp_pm_release_node(const u32 node) } EXPORT_SYMBOL_GPL(zynqmp_pm_release_node); +/** + * zynqmp_pm_get_rpu_mode() - Get RPU mode + * @node_id: Node ID of the device + * @rpu_mode: return by reference value + * either split or lockstep + * + * Return: return 0 on success or error+reason. + * if success, then rpu_mode will be set + * to current rpu mode. + */ +int zynqmp_pm_get_rpu_mode(u32 node_id, enum rpu_oper_mode *rpu_mode) +{ + u32 ret_payload[PAYLOAD_ARG_CNT]; + int ret; + + ret = zynqmp_pm_invoke_fn(PM_IOCTL, node_id, + IOCTL_GET_RPU_OPER_MODE, 0, 0, ret_payload); + + /* only set rpu_mode if no error */ + if (ret == XST_PM_SUCCESS) + *rpu_mode = ret_payload[0]; + + return ret; +} +EXPORT_SYMBOL_GPL(zynqmp_pm_get_rpu_mode); + +/** + * zynqmp_pm_set_rpu_mode() - Set RPU mode + * @node_id: Node ID of the device + * @rpu_mode: Argument 1 to requested IOCTL call. either split or lockstep + * + * This function is used to set RPU mode to split or + * lockstep + * + * Return: Returns status, either success or error+reason + */ +int zynqmp_pm_set_rpu_mode(u32 node_id, enum rpu_oper_mode rpu_mode) +{ + return zynqmp_pm_invoke_fn(PM_IOCTL, node_id, + IOCTL_SET_RPU_OPER_MODE, (u32)rpu_mode, + 0, NULL); +} +EXPORT_SYMBOL_GPL(zynqmp_pm_set_rpu_mode); + +/** + * zynqmp_pm_set_tcm_config - configure TCM + * @node_id: Firmware specific TCM subsystem ID + * @tcm_mode: Argument 1 to requested IOCTL call + * either PM_RPU_TCM_COMB or PM_RPU_TCM_SPLIT + * + * This function is used to set RPU mode to split or combined + * + * Return: status: 0 for success, else failure + */ +int zynqmp_pm_set_tcm_config(u32 node_id, enum rpu_tcm_comb tcm_mode) +{ + return zynqmp_pm_invoke_fn(PM_IOCTL, node_id, + IOCTL_TCM_COMB_CONFIG, (u32)tcm_mode, 0, + NULL); +} +EXPORT_SYMBOL_GPL(zynqmp_pm_set_tcm_config); + /** * zynqmp_pm_force_pwrdwn - PM call to request for another PU or subsystem to * be powered down forcefully diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h index d52f8413b892..83c69c968e32 100644 --- a/include/linux/firmware/xlnx-zynqmp.h +++ b/include/linux/firmware/xlnx-zynqmp.h @@ -503,6 +503,9 @@ int zynqmp_pm_request_wake(const u32 node, const bool set_addr, const u64 address, const enum zynqmp_pm_request_ack ack); +int zynqmp_pm_get_rpu_mode(u32 node_id, enum rpu_oper_mode *rpu_mode); +int zynqmp_pm_set_rpu_mode(u32 node_id, u32 arg1); +int zynqmp_pm_set_tcm_config(u32 node_id, u32 arg1); #else static inline int zynqmp_pm_get_api_version(u32 *version) { @@ -787,6 +790,21 @@ static inline int zynqmp_pm_request_wake(const u32 node, { return -ENODEV; } + +static inline int zynqmp_pm_get_rpu_mode(u32 node_id, enum rpu_oper_mode *rpu_mode) +{ + return -ENODEV; +} + +static inline int zynqmp_pm_set_rpu_mode(u32 node_id, u32 arg1) +{ + return -ENODEV; +} + +static inline int zynqmp_pm_set_tcm_config(u32 node_id, u32 arg1) +{ + return -ENODEV; +} #endif #endif /* __FIRMWARE_ZYNQMP_H__ */