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authorBen Levinsky <ben.levinsky@amd.com>2022-11-14 15:39:39 -0800
committerMathieu Poirier <mathieu.poirier@linaro.org>2022-11-25 09:11:47 -0700
commita5e56980cfb7ecaeb9a207c74e2e90ec544f0bc0 (patch)
tree7ab8c98a110ff32b096abac34dba7497b4021532 /drivers/firmware
parentda22a04f4727694e2c562ae4eb61daf77eef0427 (diff)
firmware: xilinx: Add RPU configuration APIs
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> Acked-by: Michal Simek <michal.simek@amd.com> Link: https://lore.kernel.org/r/20221114233940.2096237-6-tanmay.shah@amd.com Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Diffstat (limited to 'drivers/firmware')
-rw-r--r--drivers/firmware/xilinx/zynqmp.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 1865e43ed7e7..e4981e7f3500 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -1160,6 +1160,68 @@ 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
* @node: Node ID of the targeted PU or subsystem