/** * struct pm_api_feature_data - PM API Feature data * @pm_api_id: PM API Id, used as key to index into hashmap * @feature_status: status of PM API feature: valid, invalid * @hentry: hlist_node that hooks this entry into hashtable
*/ struct pm_api_feature_data {
u32 pm_api_id; int feature_status; struct hlist_node hentry;
};
/** * do_fw_call_hvc() - Call system-level platform management layer (HVC) * @num_args: Number of variable arguments should be <= 8 * @ret_payload: Returned value array * * Invoke platform management function via HVC * HVC-based for communication through hypervisor * (no direct communication with ATF). * * Return: Returns status, either success or error+reason
*/ static noinline int do_fw_call_hvc(u32 *ret_payload, u32 num_args, ...)
{ struct arm_smccc_res res;
u64 args[8] = {0};
va_list arg_list;
u8 i;
if (num_args > 8) return -EINVAL;
va_start(arg_list, num_args);
for (i = 0; i < num_args; i++)
args[i] = va_arg(arg_list, u64);
/* * Feature check of APIs belonging to PM, XSEM, and TF-A are handled by calling * PM_FEATURE_CHECK API. For other modules, call PM_API_FEATURES API.
*/ if (module_id == PM_MODULE_ID || module_id == XSEM_MODULE_ID || module_id == TF_A_MODULE_ID)
feature_check_api_id = PM_FEATURE_CHECK; else
feature_check_api_id = PM_API_FEATURES;
/* * Feature check of TF-A APIs is done in the TF-A layer and it expects for * MODULE_ID_MASK bits of SMC's arg[0] to be the same as PM_MODULE_ID.
*/ if (module_id == TF_A_MODULE_ID) {
module_id = PM_MODULE_ID;
smc_arg[1] = api_id;
} else {
smc_arg[1] = (api_id & API_ID_MASK);
}
/* Check for existing entry in hash table for given api */
hash_for_each_possible(pm_api_features_map, feature_data, hentry,
api_id) { if (feature_data->pm_api_id == api_id) return feature_data->feature_status;
}
/* Add new entry if not present */
feature_data = kmalloc(sizeof(*feature_data), GFP_ATOMIC); if (!feature_data) return -ENOMEM;
feature_data->pm_api_id = api_id;
ret = __do_feature_check_call(api_id, ret_payload);
/** * zynqmp_pm_feature() - Check whether given feature is supported or not and * store supported IOCTL/QUERY ID mask * @api_id: API ID to check * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_feature(const u32 api_id)
{ int ret;
/** * zynqmp_pm_is_function_supported() - Check whether given IOCTL/QUERY function * is supported or not * @api_id: PM_IOCTL or PM_QUERY_DATA * @id: IOCTL or QUERY function IDs * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_is_function_supported(const u32 api_id, const u32 id)
{ int ret;
u32 *bit_mask;
/* Input arguments validation */ if (id >= 64 || (api_id != PM_IOCTL && api_id != PM_QUERY_DATA)) return -EINVAL;
/* Check feature check API version */
ret = do_feature_check_call(PM_FEATURE_CHECK); if (ret < 0) return ret;
/* Check if feature check version 2 is supported or not */ if ((ret & FIRMWARE_VERSION_MASK) == PM_API_VERSION_2) { /* * Call feature check for IOCTL/QUERY API to get IOCTL ID or * QUERY ID feature status.
*/
ret = do_feature_check_call(api_id); if (ret < 0) return ret;
int zynqmp_pm_register_sgi(u32 sgi_num, u32 reset)
{ int ret;
ret = zynqmp_pm_invoke_fn(TF_A_PM_REGISTER_SGI, NULL, 2, sgi_num, reset); if (ret != -EOPNOTSUPP && !ret) return ret;
/* try old implementation as fallback strategy if above fails */ return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 3, IOCTL_REGISTER_SGI, sgi_num, reset);
}
/** * zynqmp_pm_get_api_version() - Get version number of PMU PM firmware * @version: Returned version value * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_get_api_version(u32 *version)
{
u32 ret_payload[PAYLOAD_ARG_CNT]; int ret;
if (!version) return -EINVAL;
/* Check is PM API version already verified */ if (pm_api_version > 0) {
*version = pm_api_version; return 0;
}
ret = zynqmp_pm_invoke_fn(PM_GET_API_VERSION, ret_payload, 0);
*version = ret_payload[1];
/** * zynqmp_pm_get_chipid - Get silicon ID registers * @idcode: IDCODE register * @version: version register * * Return: Returns the status of the operation and the idcode and version * registers in @idcode and @version.
*/ int zynqmp_pm_get_chipid(u32 *idcode, u32 *version)
{
u32 ret_payload[PAYLOAD_ARG_CNT]; int ret;
/** * 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)
{
u32 ret_payload[PAYLOAD_ARG_CNT];
u32 idcode; int ret;
/* 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;
/** * zynqmp_pm_get_sip_svc_version() - Get SiP service call version * @version: Returned version value * * Return: Returns status, either success or error+reason
*/ staticint zynqmp_pm_get_sip_svc_version(u32 *version)
{ struct arm_smccc_res res;
u64 args[SMC_ARG_CNT_64] = {0};
if (!version) return -EINVAL;
/* Check if SiP SVC version already verified */ if (sip_svc_version > 0) {
*version = sip_svc_version; return 0;
}
/** * zynqmp_pm_get_trustzone_version() - Get secure trustzone firmware version * @version: Returned version value * * Return: Returns status, either success or error+reason
*/ staticint zynqmp_pm_get_trustzone_version(u32 *version)
{
u32 ret_payload[PAYLOAD_ARG_CNT]; int ret;
if (!version) return -EINVAL;
/* Check is PM trustzone version already verified */ if (pm_tz_version > 0) {
*version = pm_tz_version; return 0;
}
ret = zynqmp_pm_invoke_fn(PM_GET_TRUSTZONE_VERSION, ret_payload, 0);
*version = ret_payload[1];
return ret;
}
/** * get_set_conduit_method() - Choose SMC or HVC based communication * @np: Pointer to the device_node structure * * Use SMC or HVC-based functions to communicate with EL2/EL3. * * Return: Returns 0 on success or error code
*/ staticint get_set_conduit_method(struct device_node *np)
{ constchar *method;
/** * zynqmp_pm_query_data() - Get query data from firmware * @qdata: Variable to the zynqmp_pm_query_data structure * @out: Returned output value * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_query_data(struct zynqmp_pm_query_data qdata, u32 *out)
{ int ret, i = 0;
u32 ret_payload[PAYLOAD_ARG_CNT] = {0};
if (sip_svc_version >= SIP_SVC_PASSTHROUGH_VERSION) {
ret = zynqmp_pm_invoke_fw_fn(PM_QUERY_DATA, ret_payload, 4,
qdata.qid, qdata.arg1,
qdata.arg2, qdata.arg3); /* To support backward compatibility */ if (!ret && !ret_payload[0]) { /* * TF-A passes return status on 0th index but * api to get clock name reads data from 0th * index so pass data at 0th index instead of * return status
*/ if (qdata.qid == PM_QID_CLOCK_GET_NAME ||
qdata.qid == PM_QID_PINCTRL_GET_FUNCTION_NAME)
i = 1;
for (; i < PAYLOAD_ARG_CNT; i++, out++)
*out = ret_payload[i];
return ret;
}
}
ret = zynqmp_pm_invoke_fn(PM_QUERY_DATA, out, 4, qdata.qid,
qdata.arg1, qdata.arg2, qdata.arg3);
/* * For clock name query, all bytes in SMC response are clock name * characters and return code is always success. For invalid clocks, * clock name bytes would be zeros.
*/ return qdata.qid == PM_QID_CLOCK_GET_NAME ? 0 : ret;
}
EXPORT_SYMBOL_GPL(zynqmp_pm_query_data);
/** * zynqmp_pm_clock_enable() - Enable the clock for given id * @clock_id: ID of the clock to be enabled * * This function is used by master to enable the clock * including peripherals and PLL clocks. * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_clock_enable(u32 clock_id)
{ return zynqmp_pm_invoke_fn(PM_CLOCK_ENABLE, NULL, 1, clock_id);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_clock_enable);
/** * zynqmp_pm_clock_disable() - Disable the clock for given id * @clock_id: ID of the clock to be disable * * This function is used by master to disable the clock * including peripherals and PLL clocks. * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_clock_disable(u32 clock_id)
{ return zynqmp_pm_invoke_fn(PM_CLOCK_DISABLE, NULL, 1, clock_id);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_clock_disable);
/** * zynqmp_pm_clock_getstate() - Get the clock state for given id * @clock_id: ID of the clock to be queried * @state: 1/0 (Enabled/Disabled) * * This function is used by master to get the state of clock * including peripherals and PLL clocks. * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_clock_getstate(u32 clock_id, u32 *state)
{
u32 ret_payload[PAYLOAD_ARG_CNT]; int ret;
ret = zynqmp_pm_invoke_fn(PM_CLOCK_GETSTATE, ret_payload, 1, clock_id);
*state = ret_payload[1];
/** * zynqmp_pm_clock_setdivider() - Set the clock divider for given id * @clock_id: ID of the clock * @divider: divider value * * This function is used by master to set divider for any clock * to achieve desired rate. * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_clock_setdivider(u32 clock_id, u32 divider)
{ return zynqmp_pm_invoke_fn(PM_CLOCK_SETDIVIDER, NULL, 2, clock_id, divider);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_clock_setdivider);
/** * zynqmp_pm_clock_getdivider() - Get the clock divider for given id * @clock_id: ID of the clock * @divider: divider value * * This function is used by master to get divider values * for any clock. * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_clock_getdivider(u32 clock_id, u32 *divider)
{
u32 ret_payload[PAYLOAD_ARG_CNT]; int ret;
ret = zynqmp_pm_invoke_fn(PM_CLOCK_GETDIVIDER, ret_payload, 1, clock_id);
*divider = ret_payload[1];
/** * zynqmp_pm_clock_setparent() - Set the clock parent for given id * @clock_id: ID of the clock * @parent_id: parent id * * This function is used by master to set parent for any clock. * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_clock_setparent(u32 clock_id, u32 parent_id)
{ return zynqmp_pm_invoke_fn(PM_CLOCK_SETPARENT, NULL, 2, clock_id, parent_id);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_clock_setparent);
/** * zynqmp_pm_clock_getparent() - Get the clock parent for given id * @clock_id: ID of the clock * @parent_id: parent id * * This function is used by master to get parent index * for any clock. * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_clock_getparent(u32 clock_id, u32 *parent_id)
{
u32 ret_payload[PAYLOAD_ARG_CNT]; int ret;
ret = zynqmp_pm_invoke_fn(PM_CLOCK_GETPARENT, ret_payload, 1, clock_id);
*parent_id = ret_payload[1];
/** * zynqmp_pm_set_pll_frac_mode() - PM API for set PLL mode * * @clk_id: PLL clock ID * @mode: PLL mode (PLL_MODE_FRAC/PLL_MODE_INT) * * This function sets PLL mode * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_set_pll_frac_mode(u32 clk_id, u32 mode)
{ return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 4, 0, IOCTL_SET_PLL_FRAC_MODE, clk_id, mode);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_set_pll_frac_mode);
/** * zynqmp_pm_get_pll_frac_mode() - PM API for get PLL mode * * @clk_id: PLL clock ID * @mode: PLL mode * * This function return current PLL mode * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_get_pll_frac_mode(u32 clk_id, u32 *mode)
{ return zynqmp_pm_invoke_fn(PM_IOCTL, mode, 3, 0, IOCTL_GET_PLL_FRAC_MODE, clk_id);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_get_pll_frac_mode);
/** * zynqmp_pm_set_pll_frac_data() - PM API for setting pll fraction data * * @clk_id: PLL clock ID * @data: fraction data * * This function sets fraction data. * It is valid for fraction mode only. * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_set_pll_frac_data(u32 clk_id, u32 data)
{ return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 4, 0, IOCTL_SET_PLL_FRAC_DATA, clk_id, data);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_set_pll_frac_data);
/** * zynqmp_pm_get_pll_frac_data() - PM API for getting pll fraction data * * @clk_id: PLL clock ID * @data: fraction data * * This function returns fraction data value. * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_get_pll_frac_data(u32 clk_id, u32 *data)
{ return zynqmp_pm_invoke_fn(PM_IOCTL, data, 3, 0, IOCTL_GET_PLL_FRAC_DATA, clk_id);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_get_pll_frac_data);
/** * zynqmp_pm_set_sd_tapdelay() - Set tap delay for the SD device * * @node_id: Node ID of the device * @type: Type of tap delay to set (input/output) * @value: Value to set fot the tap delay * * This function sets input/output tap delay for the SD device. * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_set_sd_tapdelay(u32 node_id, u32 type, u32 value)
{
u32 reg = (type == PM_TAPDELAY_INPUT) ? SD_ITAPDLY : SD_OTAPDLYSEL;
u32 mask = (node_id == NODE_SD_0) ? GENMASK(15, 0) : GENMASK(31, 16);
/* * Work around completely misdesigned firmware API on Xilinx ZynqMP. * The IOCTL_SET_SD_TAPDELAY firmware call allows the caller to only * ever set IOU_SLCR SD_ITAPDLY Register SD0_ITAPDLYENA/SD1_ITAPDLYENA * bits, but there is no matching call to clear those bits. If those * bits are not cleared, SDMMC tuning may fail. * * Luckily, there are PM_MMIO_READ/PM_MMIO_WRITE calls which seem to * allow complete unrestricted access to all address space, including * IOU_SLCR SD_ITAPDLY Register and all the other registers, access * to which was supposed to be protected by the current firmware API. * * Use PM_MMIO_READ/PM_MMIO_WRITE to re-implement the missing counter * part of IOCTL_SET_SD_TAPDELAY which clears SDx_ITAPDLYENA bits.
*/ return zynqmp_pm_invoke_fn(PM_MMIO_WRITE, NULL, 2, reg, mask);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_set_sd_tapdelay);
/** * zynqmp_pm_sd_dll_reset() - Reset DLL logic * * @node_id: Node ID of the device * @type: Reset type * * This function resets DLL logic for the SD device. * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_sd_dll_reset(u32 node_id, u32 type)
{ return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 3, node_id, IOCTL_SD_DLL_RESET, type);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_sd_dll_reset);
/** * zynqmp_pm_ospi_mux_select() - OSPI Mux selection * * @dev_id: Device Id of the OSPI device. * @select: OSPI Mux select value. * * This function select the OSPI Mux. * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_ospi_mux_select(u32 dev_id, u32 select)
{ return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 3, dev_id, IOCTL_OSPI_MUX_SELECT, select);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_ospi_mux_select);
/** * zynqmp_pm_write_ggs() - PM API for writing global general storage (ggs) * @index: GGS register index * @value: Register value to be written * * This function writes value to GGS register. * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_write_ggs(u32 index, u32 value)
{ return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 4, 0, IOCTL_WRITE_GGS, index, value);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_write_ggs);
/** * zynqmp_pm_read_ggs() - PM API for reading global general storage (ggs) * @index: GGS register index * @value: Register value to be written * * This function returns GGS register value. * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_read_ggs(u32 index, u32 *value)
{ return zynqmp_pm_invoke_fn(PM_IOCTL, value, 3, 0, IOCTL_READ_GGS, index);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_read_ggs);
/** * zynqmp_pm_write_pggs() - PM API for writing persistent global general * storage (pggs) * @index: PGGS register index * @value: Register value to be written * * This function writes value to PGGS register. * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_write_pggs(u32 index, u32 value)
{ return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 4, 0, IOCTL_WRITE_PGGS, index, value);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_write_pggs);
/** * zynqmp_pm_read_pggs() - PM API for reading persistent global general * storage (pggs) * @index: PGGS register index * @value: Register value to be written * * This function returns PGGS register value. * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_read_pggs(u32 index, u32 *value)
{ return zynqmp_pm_invoke_fn(PM_IOCTL, value, 3, 0, IOCTL_READ_PGGS, index);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_read_pggs);
/** * zynqmp_pm_set_boot_health_status() - PM API for setting healthy boot status * @value: Status value to be written * * This function sets healthy bit value to indicate boot health status * to firmware. * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_set_boot_health_status(u32 value)
{ return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 3, 0, IOCTL_SET_BOOT_HEALTH_STATUS, value);
}
/** * zynqmp_pm_reset_assert - Request setting of reset (1 - assert, 0 - release) * @reset: Reset to be configured * @assert_flag: Flag stating should reset be asserted (1) or * released (0) * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_reset_assert(const u32 reset, constenum zynqmp_pm_reset_action assert_flag)
{ return zynqmp_pm_invoke_fn(PM_RESET_ASSERT, NULL, 2, reset, assert_flag);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_reset_assert);
/** * zynqmp_pm_reset_get_status - Get status of the reset * @reset: Reset whose status should be returned * @status: Returned status * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_reset_get_status(const u32 reset, u32 *status)
{
u32 ret_payload[PAYLOAD_ARG_CNT]; int ret;
if (!status) return -EINVAL;
ret = zynqmp_pm_invoke_fn(PM_RESET_GET_STATUS, ret_payload, 1, reset);
*status = ret_payload[1];
/** * zynqmp_pm_fpga_load - Perform the fpga load * @address: Address to write to * @size: pl bitstream size * @flags: Bitstream type * -XILINX_ZYNQMP_PM_FPGA_FULL: FPGA full reconfiguration * -XILINX_ZYNQMP_PM_FPGA_PARTIAL: FPGA partial reconfiguration * * This function provides access to pmufw. To transfer * the required bitstream into PL. * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_fpga_load(const u64 address, const u32 size, const u32 flags)
{
u32 ret_payload[PAYLOAD_ARG_CNT]; int ret;
ret = zynqmp_pm_invoke_fn(PM_FPGA_LOAD, ret_payload, 4, lower_32_bits(address),
upper_32_bits(address), size, flags); if (ret_payload[0]) return -ret_payload[0];
/** * zynqmp_pm_fpga_get_status - Read value from PCAP status register * @value: Value to read * * This function provides access to the pmufw to get the PCAP * status * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_fpga_get_status(u32 *value)
{
u32 ret_payload[PAYLOAD_ARG_CNT]; int ret;
if (!value) return -EINVAL;
ret = zynqmp_pm_invoke_fn(PM_FPGA_GET_STATUS, ret_payload, 0);
*value = ret_payload[1];
/** * zynqmp_pm_fpga_get_config_status - Get the FPGA configuration status. * @value: Buffer to store FPGA configuration status. * * This function provides access to the pmufw to get the FPGA configuration * status * * Return: 0 on success, a negative value on error
*/ int zynqmp_pm_fpga_get_config_status(u32 *value)
{
u32 ret_payload[PAYLOAD_ARG_CNT]; int ret;
if (!value) return -EINVAL;
ret = zynqmp_pm_invoke_fn(PM_FPGA_READ, ret_payload, 4,
XILINX_ZYNQMP_PM_FPGA_CONFIG_STAT_OFFSET, 0, 0,
XILINX_ZYNQMP_PM_FPGA_READ_CONFIG_REG);
/** * zynqmp_pm_pinctrl_request - Request Pin from firmware * @pin: Pin number to request * * This function requests pin from firmware. * * Return: Returns status, either success or error+reason.
*/ int zynqmp_pm_pinctrl_request(const u32 pin)
{ return zynqmp_pm_invoke_fn(PM_PINCTRL_REQUEST, NULL, 1, pin);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_pinctrl_request);
/** * zynqmp_pm_pinctrl_release - Inform firmware that Pin control is released * @pin: Pin number to release * * This function release pin from firmware. * * Return: Returns status, either success or error+reason.
*/ int zynqmp_pm_pinctrl_release(const u32 pin)
{ return zynqmp_pm_invoke_fn(PM_PINCTRL_RELEASE, NULL, 1, pin);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_pinctrl_release);
/** * zynqmp_pm_pinctrl_set_function - Set requested function for the pin * @pin: Pin number * @id: Function ID to set * * This function sets requested function for the given pin. * * Return: Returns status, either success or error+reason.
*/ int zynqmp_pm_pinctrl_set_function(const u32 pin, const u32 id)
{ return zynqmp_pm_invoke_fn(PM_PINCTRL_SET_FUNCTION, NULL, 2, pin, id);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_pinctrl_set_function);
/** * zynqmp_pm_pinctrl_get_config - Get configuration parameter for the pin * @pin: Pin number * @param: Parameter to get * @value: Buffer to store parameter value * * This function gets requested configuration parameter for the given pin. * * Return: Returns status, either success or error+reason.
*/ int zynqmp_pm_pinctrl_get_config(const u32 pin, const u32 param,
u32 *value)
{
u32 ret_payload[PAYLOAD_ARG_CNT]; int ret;
if (!value) return -EINVAL;
ret = zynqmp_pm_invoke_fn(PM_PINCTRL_CONFIG_PARAM_GET, ret_payload, 2, pin, param);
*value = ret_payload[1];
/** * zynqmp_pm_pinctrl_set_config - Set configuration parameter for the pin * @pin: Pin number * @param: Parameter to set * @value: Parameter value to set * * This function sets requested configuration parameter for the given pin. * * Return: Returns status, either success or error+reason.
*/ int zynqmp_pm_pinctrl_set_config(const u32 pin, const u32 param,
u32 value)
{ int ret;
if (pm_family_code == 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) {
pr_warn("The requested pinctrl feature is not supported in the current firmware.\n" "Expected firmware version is 2023.1 and above for this feature to work.\r\n"); return -EOPNOTSUPP;
}
}
/** * zynqmp_pm_bootmode_read() - PM Config API for read bootpin status * @ps_mode: Returned output value of ps_mode * * This API function is to be used for notify the power management controller * to read bootpin status. * * Return: status, either success or error+reason
*/ unsignedint zynqmp_pm_bootmode_read(u32 *ps_mode)
{ unsignedint ret;
u32 ret_payload[PAYLOAD_ARG_CNT];
ret = zynqmp_pm_invoke_fn(PM_MMIO_READ, ret_payload, 1, CRL_APB_BOOT_PIN_CTRL);
/** * zynqmp_pm_bootmode_write() - PM Config API for Configure bootpin * @ps_mode: Value to be written to the bootpin ctrl register * * This API function is to be used for notify the power management controller * to configure bootpin. * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_bootmode_write(u32 ps_mode)
{ return zynqmp_pm_invoke_fn(PM_MMIO_WRITE, NULL, 3, CRL_APB_BOOT_PIN_CTRL,
CRL_APB_BOOTPIN_CTRL_MASK, ps_mode);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_bootmode_write);
/** * zynqmp_pm_init_finalize() - PM call to inform firmware that the caller * master has initialized its own power management * * Return: Returns status, either success or error+reason * * This API function is to be used for notify the power management controller * about the completed power management initialization.
*/ staticint zynqmp_pm_init_finalize(void)
{ return zynqmp_pm_invoke_fn(PM_PM_INIT_FINALIZE, NULL, 0);
}
/** * zynqmp_pm_set_suspend_mode() - Set system suspend mode * @mode: Mode to set for system suspend * * This API function is used to set mode of system suspend. * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_set_suspend_mode(u32 mode)
{ return zynqmp_pm_invoke_fn(PM_SET_SUSPEND_MODE, NULL, 1, mode);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_set_suspend_mode);
/** * zynqmp_pm_request_node() - Request a node with specific capabilities * @node: Node ID of the slave * @capabilities: Requested capabilities of the slave * @qos: Quality of service (not supported) * @ack: Flag to specify whether acknowledge is requested * * This function is used by master to request particular node from firmware. * Every master must request node before using it. * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_request_node(const u32 node, const u32 capabilities, const u32 qos, constenum zynqmp_pm_request_ack ack)
{ return zynqmp_pm_invoke_fn(PM_REQUEST_NODE, NULL, 4, node, capabilities, qos, ack);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_request_node);
/** * zynqmp_pm_release_node() - Release a node * @node: Node ID of the slave * * This function is used by master to inform firmware that master * has released node. Once released, master must not use that node * without re-request. * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_release_node(const u32 node)
{ return zynqmp_pm_invoke_fn(PM_RELEASE_NODE, NULL, 1, 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, ret_payload, 2, node_id, IOCTL_GET_RPU_OPER_MODE);
/* only set rpu_mode if no error */ if (ret == XST_PM_SUCCESS)
*rpu_mode = ret_payload[0];
/** * 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, NULL, 3, node_id, IOCTL_SET_RPU_OPER_MODE,
(u32)rpu_mode);
}
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, NULL, 3, node_id, IOCTL_TCM_COMB_CONFIG,
(u32)tcm_mode);
}
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 * @ack: Flag to specify whether acknowledge is requested * * Return: status, either success or error+reason
*/ int zynqmp_pm_force_pwrdwn(const u32 node, constenum zynqmp_pm_request_ack ack)
{ return zynqmp_pm_invoke_fn(PM_FORCE_POWERDOWN, NULL, 2, node, ack);
}
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, constbool set_addr, const u64 address, constenum zynqmp_pm_request_ack ack)
{ /* set_addr flag is encoded into 1st bit of address */ return zynqmp_pm_invoke_fn(PM_REQUEST_WAKEUP, NULL, 4, node, address | set_addr,
address >> 32, ack);
}
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 * @capabilities: Requested capabilities of the slave * @qos: Quality of service (not supported) * @ack: Flag to specify whether acknowledge is requested * * This API function is to be used for slaves a PU already has requested * to change its capabilities. * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities, const u32 qos, constenum zynqmp_pm_request_ack ack)
{ return zynqmp_pm_invoke_fn(PM_SET_REQUIREMENT, NULL, 4, node, capabilities, qos, ack);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_set_requirement);
/** * zynqmp_pm_load_pdi - Load and process PDI * @src: Source device where PDI is located * @address: PDI src address * * This function provides support to load PDI from linux * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_load_pdi(const u32 src, const u64 address)
{ return zynqmp_pm_invoke_fn(PM_LOAD_PDI, NULL, 3, src, lower_32_bits(address),
upper_32_bits(address));
}
EXPORT_SYMBOL_GPL(zynqmp_pm_load_pdi);
/** * zynqmp_pm_aes_engine - Access AES hardware to encrypt/decrypt the data using * AES-GCM core. * @address: Address of the AesParams structure. * @out: Returned output value * * Return: Returns status, either success or error code.
*/ int zynqmp_pm_aes_engine(const u64 address, u32 *out)
{
u32 ret_payload[PAYLOAD_ARG_CNT]; int ret;
if (!out) return -EINVAL;
ret = zynqmp_pm_invoke_fn(PM_SECURE_AES, ret_payload, 2, upper_32_bits(address),
lower_32_bits(address));
*out = ret_payload[1];
/** * zynqmp_pm_efuse_access - Provides access to efuse memory. * @address: Address of the efuse params structure * @out: Returned output value * * Return: Returns status, either success or error code.
*/ int zynqmp_pm_efuse_access(const u64 address, u32 *out)
{
u32 ret_payload[PAYLOAD_ARG_CNT]; int ret;
if (!out) return -EINVAL;
ret = zynqmp_pm_invoke_fn(PM_EFUSE_ACCESS, ret_payload, 2,
upper_32_bits(address),
lower_32_bits(address));
*out = ret_payload[1];
/** * zynqmp_pm_sha_hash - Access the SHA engine to calculate the hash * @address: Address of the data/ Address of output buffer where * hash should be stored. * @size: Size of the data. * @flags: * BIT(0) - for initializing csudma driver and SHA3(Here address * and size inputs can be NULL). * BIT(1) - to call Sha3_Update API which can be called multiple * times when data is not contiguous. * BIT(2) - to get final hash of the whole updated data. * Hash will be overwritten at provided address with * 48 bytes. * * Return: Returns status, either success or error code.
*/ int zynqmp_pm_sha_hash(const u64 address, const u32 size, const u32 flags)
{
u32 lower_addr = lower_32_bits(address);
u32 upper_addr = upper_32_bits(address);
/** * zynqmp_pm_register_notifier() - PM API for register a subsystem * to be notified about specific * event/error. * @node: Node ID to which the event is related. * @event: Event Mask of Error events for which wants to get notified. * @wake: Wake subsystem upon capturing the event if value 1 * @enable: Enable the registration for value 1, disable for value 0 * * This function is used to register/un-register for particular node-event * combination in firmware. * * Return: Returns status, either success or error+reason
*/
/** * zynqmp_pm_system_shutdown - PM call to request a system shutdown or restart * @type: Shutdown or restart? 0 for shutdown, 1 for restart * @subtype: Specifies which system should be restarted or shut down * * Return: Returns status, either success or error+reason
*/ int zynqmp_pm_system_shutdown(const u32 type, const u32 subtype)
{ return zynqmp_pm_invoke_fn(PM_SYSTEM_SHUTDOWN, NULL, 2, type, subtype);
}
/** * zynqmp_pm_set_feature_config - PM call to request IOCTL for feature config * @id: The config ID of the feature to be configured * @value: The config value of the feature to be configured * * Return: Returns 0 on success or error value on failure.
*/ int zynqmp_pm_set_feature_config(enum pm_feature_config_id id, u32 value)
{ return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 4, 0, IOCTL_SET_FEATURE_CONFIG, id, value);
}
/** * zynqmp_pm_get_feature_config - PM call to get value of configured feature * @id: The config id of the feature to be queried * @payload: Returned value array * * Return: Returns 0 on success or error value on failure.
*/ int zynqmp_pm_get_feature_config(enum pm_feature_config_id id,
u32 *payload)
{ return zynqmp_pm_invoke_fn(PM_IOCTL, payload, 3, 0, IOCTL_GET_FEATURE_CONFIG, id);
}
/** * 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 * @value: Value to be set * * Return: Returns 0 on success or error value on failure.
*/ int zynqmp_pm_set_sd_config(u32 node, enum pm_sd_config_type config, u32 value)
{ return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 4, node, IOCTL_SET_SD_CONFIG, config, value);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_set_sd_config);
/** * zynqmp_pm_set_gem_config - PM call to set value of GEM config registers * @node: GEM node ID * @config: The config type of GEM registers * @value: Value to be set * * Return: Returns 0 on success or error value on failure.
*/ int zynqmp_pm_set_gem_config(u32 node, enum pm_gem_config_type config,
u32 value)
{ return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 4, node, IOCTL_SET_GEM_CONFIG, config, value);
}
EXPORT_SYMBOL_GPL(zynqmp_pm_set_gem_config);
/** * struct zynqmp_pm_shutdown_scope - Struct for shutdown scope * @subtype: Shutdown subtype * @name: Matching string for scope argument * * This struct encapsulates mapping between shutdown scope ID and string.
*/ struct zynqmp_pm_shutdown_scope { constenum zynqmp_pm_shutdown_subtype subtype; constchar *name;
};
/** * zynqmp_pm_is_shutdown_scope_valid - Check if shutdown scope string is valid * @scope_string: Shutdown scope string * * Return: Return pointer to matching shutdown scope struct from * array of available options in system if string is valid, * otherwise returns NULL.
*/ staticstruct zynqmp_pm_shutdown_scope*
zynqmp_pm_is_shutdown_scope_valid(constchar *scope_string)
{ int count;
for (count = 0; count < ARRAY_SIZE(shutdown_scopes); count++) if (sysfs_streq(scope_string, shutdown_scopes[count].name)) return &shutdown_scopes[count];
scope = zynqmp_pm_is_shutdown_scope_valid(buf); if (!scope) return -EINVAL;
ret = zynqmp_pm_system_shutdown(ZYNQMP_PM_SHUTDOWN_TYPE_SETSCOPE_ONLY,
scope->subtype); if (ret) {
pr_err("unable to set shutdown scope %s\n", buf); return ret;
}
/* Get the Family code and sub family code of platform */
ret = zynqmp_pm_get_family_info(&pm_family_code, &pm_sub_family_code); if (ret < 0) return ret;
/* Check trustzone version number */
ret = zynqmp_pm_get_trustzone_version(&pm_tz_version); if (ret)
panic("Legacy trustzone found without version support\n");
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