diff options
Diffstat (limited to 'drivers/firmware/xilinx/zynqmp.c')
| -rw-r--r-- | drivers/firmware/xilinx/zynqmp.c | 160 |
1 files changed, 131 insertions, 29 deletions
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c index 02da3e48bc8f..ad811f40e059 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -3,7 +3,7 @@ * Xilinx Zynq MPSoC Firmware layer * * Copyright (C) 2014-2022 Xilinx, Inc. - * Copyright (C) 2022 - 2024, Advanced Micro Devices, Inc. + * Copyright (C) 2022 - 2025 Advanced Micro Devices, Inc. * * Michal Simek <michal.simek@amd.com> * Davorin Mista <davorin.mista@aggios.com> @@ -72,6 +72,15 @@ struct pm_api_feature_data { struct hlist_node hentry; }; +struct platform_fw_data { + /* + * Family code for platform. + */ + const u32 family_code; +}; + +static struct platform_fw_data *active_platform_fw_data; + static const struct mfd_cell firmware_devs[] = { { .name = "zynqmp_power_controller", @@ -464,8 +473,6 @@ int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 *ret_payload, u32 num_args, ...) static u32 pm_api_version; static u32 pm_tz_version; -static u32 pm_family_code; -static u32 pm_sub_family_code; int zynqmp_pm_register_sgi(u32 sgi_num, u32 reset) { @@ -532,32 +539,18 @@ EXPORT_SYMBOL_GPL(zynqmp_pm_get_chipid); /** * zynqmp_pm_get_family_info() - Get family info of platform * @family: Returned family code value - * @subfamily: Returned sub-family code value * * Return: Returns status, either success or error+reason */ -int zynqmp_pm_get_family_info(u32 *family, u32 *subfamily) +int zynqmp_pm_get_family_info(u32 *family) { - u32 ret_payload[PAYLOAD_ARG_CNT]; - u32 idcode; - int ret; + if (!active_platform_fw_data) + return -ENODEV; - /* Check is family or sub-family code already received */ - if (pm_family_code && pm_sub_family_code) { - *family = pm_family_code; - *subfamily = pm_sub_family_code; - return 0; - } - - ret = zynqmp_pm_invoke_fn(PM_GET_CHIPID, ret_payload, 0); - if (ret < 0) - return ret; + if (!family) + return -EINVAL; - idcode = ret_payload[1]; - pm_family_code = FIELD_GET(FAMILY_CODE_MASK, idcode); - pm_sub_family_code = FIELD_GET(SUB_FAMILY_CODE_MASK, idcode); - *family = pm_family_code; - *subfamily = pm_sub_family_code; + *family = active_platform_fw_data->family_code; return 0; } @@ -1238,8 +1231,13 @@ int zynqmp_pm_pinctrl_set_config(const u32 pin, const u32 param, u32 value) { int ret; + u32 pm_family_code; + + ret = zynqmp_pm_get_family_info(&pm_family_code); + if (ret) + return ret; - if (pm_family_code == ZYNQMP_FAMILY_CODE && + if (pm_family_code == PM_ZYNQMP_FAMILY_CODE && param == PM_PINCTRL_CONFIG_TRI_STATE) { ret = zynqmp_pm_feature(PM_PINCTRL_CONFIG_PARAM_SET); if (ret < PM_PINCTRL_PARAM_SET_VERSION) { @@ -1414,6 +1412,45 @@ int zynqmp_pm_set_tcm_config(u32 node_id, enum rpu_tcm_comb tcm_mode) EXPORT_SYMBOL_GPL(zynqmp_pm_set_tcm_config); /** + * zynqmp_pm_get_node_status - PM call to request a node's current power state + * @node: ID of the component or sub-system in question + * @status: Current operating state of the requested node + * @requirements: Current requirements asserted on the node, + * used for slave nodes only. + * @usage: Usage information, used for slave nodes only: + * PM_USAGE_NO_MASTER - No master is currently using + * the node + * PM_USAGE_CURRENT_MASTER - Only requesting master is + * currently using the node + * PM_USAGE_OTHER_MASTER - Only other masters are + * currently using the node + * PM_USAGE_BOTH_MASTERS - Both the current and at least + * one other master is currently + * using the node + * + * Return: Returns status, either success or error+reason + */ +int zynqmp_pm_get_node_status(const u32 node, u32 *const status, + u32 *const requirements, u32 *const usage) +{ + u32 ret_payload[PAYLOAD_ARG_CNT]; + int ret; + + if (!status || !requirements || !usage) + return -EINVAL; + + ret = zynqmp_pm_invoke_fn(PM_GET_NODE_STATUS, ret_payload, 1, node); + if (ret_payload[0] == XST_PM_SUCCESS) { + *status = ret_payload[1]; + *requirements = ret_payload[2]; + *usage = ret_payload[3]; + } + + return ret; +} +EXPORT_SYMBOL_GPL(zynqmp_pm_get_node_status); + +/** * 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 @@ -1617,6 +1654,52 @@ int zynqmp_pm_get_feature_config(enum pm_feature_config_id id, } /** + * zynqmp_pm_sec_read_reg - PM call to securely read from given offset + * of the node + * @node_id: Node Id of the device + * @offset: Offset to be used (20-bit) + * @ret_value: Output data read from the given offset after + * firmware access policy is successfully enforced + * + * Return: Returns 0 on success or error value on failure + */ +int zynqmp_pm_sec_read_reg(u32 node_id, u32 offset, u32 *ret_value) +{ + u32 ret_payload[PAYLOAD_ARG_CNT]; + u32 count = 1; + int ret; + + if (!ret_value) + return -EINVAL; + + ret = zynqmp_pm_invoke_fn(PM_IOCTL, ret_payload, 4, node_id, IOCTL_READ_REG, + offset, count); + + *ret_value = ret_payload[1]; + + return ret; +} +EXPORT_SYMBOL_GPL(zynqmp_pm_sec_read_reg); + +/** + * zynqmp_pm_sec_mask_write_reg - PM call to securely write to given offset + * of the node + * @node_id: Node Id of the device + * @offset: Offset to be used (20-bit) + * @mask: Mask to be used + * @value: Value to be written + * + * Return: Returns 0 on success or error value on failure + */ +int zynqmp_pm_sec_mask_write_reg(const u32 node_id, const u32 offset, u32 mask, + u32 value) +{ + return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 5, node_id, IOCTL_MASK_WRITE_REG, + offset, mask, value); +} +EXPORT_SYMBOL_GPL(zynqmp_pm_sec_mask_write_reg); + +/** * zynqmp_pm_set_sd_config - PM call to set value of SD config registers * @node: SD node ID * @config: The config type of SD registers @@ -2007,12 +2090,18 @@ static int zynqmp_firmware_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct zynqmp_devinfo *devinfo; + u32 pm_family_code; int ret; ret = get_set_conduit_method(dev->of_node); if (ret) return ret; + /* Get platform-specific firmware data from device tree match */ + active_platform_fw_data = (struct platform_fw_data *)device_get_match_data(dev); + if (!active_platform_fw_data) + return -EINVAL; + /* Get SiP SVC version number */ ret = zynqmp_pm_get_sip_svc_version(&sip_svc_version); if (ret) @@ -2045,8 +2134,8 @@ static int zynqmp_firmware_probe(struct platform_device *pdev) pr_info("%s Platform Management API v%d.%d\n", __func__, pm_api_version >> 16, pm_api_version & 0xFFFF); - /* Get the Family code and sub family code of platform */ - ret = zynqmp_pm_get_family_info(&pm_family_code, &pm_sub_family_code); + /* Get the Family code of platform */ + ret = zynqmp_pm_get_family_info(&pm_family_code); if (ret < 0) return ret; @@ -2073,7 +2162,7 @@ static int zynqmp_firmware_probe(struct platform_device *pdev) zynqmp_pm_api_debugfs_init(); - if (pm_family_code == VERSAL_FAMILY_CODE) { + if (pm_family_code != PM_ZYNQMP_FAMILY_CODE) { em_dev = platform_device_register_data(&pdev->dev, "xlnx_event_manager", -1, NULL, 0); if (IS_ERR(em_dev)) @@ -2113,9 +2202,22 @@ static void zynqmp_firmware_sync_state(struct device *dev) dev_warn(dev, "failed to release power management to firmware\n"); } +static const struct platform_fw_data platform_fw_data_versal = { + .family_code = PM_VERSAL_FAMILY_CODE, +}; + +static const struct platform_fw_data platform_fw_data_versal_net = { + .family_code = PM_VERSAL_NET_FAMILY_CODE, +}; + +static const struct platform_fw_data platform_fw_data_zynqmp = { + .family_code = PM_ZYNQMP_FAMILY_CODE, +}; + static const struct of_device_id zynqmp_firmware_of_match[] = { - {.compatible = "xlnx,zynqmp-firmware"}, - {.compatible = "xlnx,versal-firmware"}, + {.compatible = "xlnx,zynqmp-firmware", .data = &platform_fw_data_zynqmp}, + {.compatible = "xlnx,versal-firmware", .data = &platform_fw_data_versal}, + {.compatible = "xlnx,versal-net-firmware", .data = &platform_fw_data_versal_net}, {}, }; MODULE_DEVICE_TABLE(of, zynqmp_firmware_of_match); |