1 // SPDX-License-Identifier: GPL-2.0
3 * Xilinx Zynq MPSoC Firmware layer
5 * Copyright (C) 2014-2022 Xilinx, Inc.
7 * Michal Simek <michal.simek@amd.com>
8 * Davorin Mista <davorin.mista@aggios.com>
9 * Jolly Shah <jollys@xilinx.com>
10 * Rajan Vaja <rajanv@xilinx.com>
13 #include <linux/arm-smccc.h>
14 #include <linux/compiler.h>
15 #include <linux/device.h>
16 #include <linux/init.h>
17 #include <linux/mfd/core.h>
18 #include <linux/module.h>
20 #include <linux/of_platform.h>
21 #include <linux/platform_device.h>
22 #include <linux/slab.h>
23 #include <linux/uaccess.h>
24 #include <linux/hashtable.h>
26 #include <linux/firmware/xlnx-zynqmp.h>
27 #include <linux/firmware/xlnx-event-manager.h>
28 #include "zynqmp-debug.h"
30 /* Max HashMap Order for PM API feature check (1<<7 = 128) */
31 #define PM_API_FEATURE_CHECK_MAX_ORDER 7
33 /* CRL registers and bitfields */
34 #define CRL_APB_BASE 0xFF5E0000U
35 /* BOOT_PIN_CTRL- Used to control the mode pins after boot */
36 #define CRL_APB_BOOT_PIN_CTRL (CRL_APB_BASE + (0x250U))
37 /* BOOT_PIN_CTRL_MASK- out_val[11:8], out_en[3:0] */
38 #define CRL_APB_BOOTPIN_CTRL_MASK 0xF0FU
40 /* IOCTL/QUERY feature payload size */
41 #define FEATURE_PAYLOAD_SIZE 2
43 /* Firmware feature check version mask */
44 #define FIRMWARE_VERSION_MASK GENMASK(15, 0)
46 static bool feature_check_enabled;
47 static DEFINE_HASHTABLE(pm_api_features_map, PM_API_FEATURE_CHECK_MAX_ORDER);
48 static u32 ioctl_features[FEATURE_PAYLOAD_SIZE];
49 static u32 query_features[FEATURE_PAYLOAD_SIZE];
51 static struct platform_device *em_dev;
54 * struct zynqmp_devinfo - Structure for Zynqmp device instance
55 * @dev: Device Pointer
56 * @feature_conf_id: Feature conf id
58 struct zynqmp_devinfo {
64 * struct pm_api_feature_data - PM API Feature data
65 * @pm_api_id: PM API Id, used as key to index into hashmap
66 * @feature_status: status of PM API feature: valid, invalid
67 * @hentry: hlist_node that hooks this entry into hashtable
69 struct pm_api_feature_data {
72 struct hlist_node hentry;
75 static const struct mfd_cell firmware_devs[] = {
77 .name = "zynqmp_power_controller",
82 * zynqmp_pm_ret_code() - Convert PMU-FW error codes to Linux error codes
83 * @ret_status: PMUFW return code
85 * Return: corresponding Linux error code
87 static int zynqmp_pm_ret_code(u32 ret_status)
91 case XST_PM_DOUBLE_REQ:
93 case XST_PM_NO_FEATURE:
95 case XST_PM_INVALID_VERSION:
97 case XST_PM_NO_ACCESS:
99 case XST_PM_ABORT_SUSPEND:
101 case XST_PM_MULT_USER:
103 case XST_PM_INTERNAL:
104 case XST_PM_CONFLICT:
105 case XST_PM_INVALID_NODE:
106 case XST_PM_INVALID_CRC:
112 static noinline int do_fw_call_fail(u32 *ret_payload, u32 num_args, ...)
118 * PM function call wrapper
119 * Invoke do_fw_call_smc or do_fw_call_hvc, depending on the configuration
121 static int (*do_fw_call)(u32 *ret_payload, u32, ...) = do_fw_call_fail;
124 * do_fw_call_smc() - Call system-level platform management layer (SMC)
125 * @num_args: Number of variable arguments should be <= 8
126 * @ret_payload: Returned value array
128 * Invoke platform management function via SMC call (no hypervisor present).
130 * Return: Returns status, either success or error+reason
132 static noinline int do_fw_call_smc(u32 *ret_payload, u32 num_args, ...)
134 struct arm_smccc_res res;
142 va_start(arg_list, num_args);
144 for (i = 0; i < num_args; i++)
145 args[i] = va_arg(arg_list, u64);
149 arm_smccc_smc(args[0], args[1], args[2], args[3], args[4], args[5], args[6], args[7], &res);
152 ret_payload[0] = lower_32_bits(res.a0);
153 ret_payload[1] = upper_32_bits(res.a0);
154 ret_payload[2] = lower_32_bits(res.a1);
155 ret_payload[3] = upper_32_bits(res.a1);
158 return zynqmp_pm_ret_code((enum pm_ret_status)res.a0);
162 * do_fw_call_hvc() - Call system-level platform management layer (HVC)
163 * @num_args: Number of variable arguments should be <= 8
164 * @ret_payload: Returned value array
166 * Invoke platform management function via HVC
167 * HVC-based for communication through hypervisor
168 * (no direct communication with ATF).
170 * Return: Returns status, either success or error+reason
172 static noinline int do_fw_call_hvc(u32 *ret_payload, u32 num_args, ...)
174 struct arm_smccc_res res;
182 va_start(arg_list, num_args);
184 for (i = 0; i < num_args; i++)
185 args[i] = va_arg(arg_list, u64);
189 arm_smccc_hvc(args[0], args[1], args[2], args[3], args[4], args[5], args[6], args[7], &res);
192 ret_payload[0] = lower_32_bits(res.a0);
193 ret_payload[1] = upper_32_bits(res.a0);
194 ret_payload[2] = lower_32_bits(res.a1);
195 ret_payload[3] = upper_32_bits(res.a1);
198 return zynqmp_pm_ret_code((enum pm_ret_status)res.a0);
201 static int __do_feature_check_call(const u32 api_id, u32 *ret_payload)
206 u32 feature_check_api_id;
208 module_id = FIELD_GET(MODULE_ID_MASK, api_id);
211 * Feature check of APIs belonging to PM, XSEM, and TF-A are handled by calling
212 * PM_FEATURE_CHECK API. For other modules, call PM_API_FEATURES API.
214 if (module_id == PM_MODULE_ID || module_id == XSEM_MODULE_ID || module_id == TF_A_MODULE_ID)
215 feature_check_api_id = PM_FEATURE_CHECK;
217 feature_check_api_id = PM_API_FEATURES;
220 * Feature check of TF-A APIs is done in the TF-A layer and it expects for
221 * MODULE_ID_MASK bits of SMC's arg[0] to be the same as PM_MODULE_ID.
223 if (module_id == TF_A_MODULE_ID)
224 module_id = PM_MODULE_ID;
226 smc_arg[0] = PM_SIP_SVC | FIELD_PREP(MODULE_ID_MASK, module_id) | feature_check_api_id;
227 smc_arg[1] = (api_id & API_ID_MASK);
229 ret = do_fw_call(ret_payload, 2, smc_arg[0], smc_arg[1]);
233 ret = ret_payload[1];
238 static int do_feature_check_call(const u32 api_id)
241 u32 ret_payload[PAYLOAD_ARG_CNT];
242 struct pm_api_feature_data *feature_data;
244 /* Check for existing entry in hash table for given api */
245 hash_for_each_possible(pm_api_features_map, feature_data, hentry,
247 if (feature_data->pm_api_id == api_id)
248 return feature_data->feature_status;
251 /* Add new entry if not present */
252 feature_data = kmalloc(sizeof(*feature_data), GFP_ATOMIC);
256 feature_data->pm_api_id = api_id;
257 ret = __do_feature_check_call(api_id, ret_payload);
259 feature_data->feature_status = ret;
260 hash_add(pm_api_features_map, &feature_data->hentry, api_id);
262 if (api_id == PM_IOCTL)
263 /* Store supported IOCTL IDs mask */
264 memcpy(ioctl_features, &ret_payload[2], FEATURE_PAYLOAD_SIZE * 4);
265 else if (api_id == PM_QUERY_DATA)
266 /* Store supported QUERY IDs mask */
267 memcpy(query_features, &ret_payload[2], FEATURE_PAYLOAD_SIZE * 4);
273 * zynqmp_pm_feature() - Check whether given feature is supported or not and
274 * store supported IOCTL/QUERY ID mask
275 * @api_id: API ID to check
277 * Return: Returns status, either success or error+reason
279 int zynqmp_pm_feature(const u32 api_id)
283 if (!feature_check_enabled)
286 ret = do_feature_check_call(api_id);
290 EXPORT_SYMBOL_GPL(zynqmp_pm_feature);
293 * zynqmp_pm_is_function_supported() - Check whether given IOCTL/QUERY function
294 * is supported or not
295 * @api_id: PM_IOCTL or PM_QUERY_DATA
296 * @id: IOCTL or QUERY function IDs
298 * Return: Returns status, either success or error+reason
300 int zynqmp_pm_is_function_supported(const u32 api_id, const u32 id)
305 /* Input arguments validation */
306 if (id >= 64 || (api_id != PM_IOCTL && api_id != PM_QUERY_DATA))
309 /* Check feature check API version */
310 ret = do_feature_check_call(PM_FEATURE_CHECK);
314 /* Check if feature check version 2 is supported or not */
315 if ((ret & FIRMWARE_VERSION_MASK) == PM_API_VERSION_2) {
317 * Call feature check for IOCTL/QUERY API to get IOCTL ID or
318 * QUERY ID feature status.
320 ret = do_feature_check_call(api_id);
324 bit_mask = (api_id == PM_IOCTL) ? ioctl_features : query_features;
326 if ((bit_mask[(id / 32)] & BIT((id % 32))) == 0U)
334 EXPORT_SYMBOL_GPL(zynqmp_pm_is_function_supported);
337 * zynqmp_pm_invoke_fn() - Invoke the system-level platform management layer
338 * caller function depending on the configuration
339 * @pm_api_id: Requested PM-API call
340 * @ret_payload: Returned value array
341 * @num_args: Number of arguments to requested PM-API call
343 * Invoke platform management function for SMC or HVC call, depending on
345 * Following SMC Calling Convention (SMCCC) for SMC64:
346 * Pm Function Identifier,
347 * PM_SIP_SVC + PM_API_ID =
348 * ((SMC_TYPE_FAST << FUNCID_TYPE_SHIFT)
349 * ((SMC_64) << FUNCID_CC_SHIFT)
350 * ((SIP_START) << FUNCID_OEN_SHIFT)
351 * ((PM_API_ID) & FUNCID_NUM_MASK))
353 * PM_SIP_SVC - Registered ZynqMP SIP Service Call.
354 * PM_API_ID - Platform Management API ID.
356 * Return: Returns status, either success or error+reason
358 int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 *ret_payload, u32 num_args, ...)
361 * Added SIP service call Function Identifier
362 * Make sure to stay in x0 register
372 va_start(arg_list, num_args);
374 /* Check if feature is supported or not */
375 ret = zynqmp_pm_feature(pm_api_id);
379 for (i = 0; i < num_args; i++)
380 args[i] = va_arg(arg_list, u32);
384 smc_arg[0] = PM_SIP_SVC | pm_api_id;
385 for (i = 0; i < 7; i++)
386 smc_arg[i + 1] = ((u64)args[(i * 2) + 1] << 32) | args[i * 2];
388 return do_fw_call(ret_payload, 8, smc_arg[0], smc_arg[1], smc_arg[2], smc_arg[3],
389 smc_arg[4], smc_arg[5], smc_arg[6], smc_arg[7]);
392 static u32 pm_api_version;
393 static u32 pm_tz_version;
394 static u32 pm_family_code;
395 static u32 pm_sub_family_code;
397 int zynqmp_pm_register_sgi(u32 sgi_num, u32 reset)
401 ret = zynqmp_pm_invoke_fn(TF_A_PM_REGISTER_SGI, NULL, 2, sgi_num, reset);
402 if (ret != -EOPNOTSUPP && !ret)
405 /* try old implementation as fallback strategy if above fails */
406 return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 3, IOCTL_REGISTER_SGI, sgi_num, reset);
410 * zynqmp_pm_get_api_version() - Get version number of PMU PM firmware
411 * @version: Returned version value
413 * Return: Returns status, either success or error+reason
415 int zynqmp_pm_get_api_version(u32 *version)
417 u32 ret_payload[PAYLOAD_ARG_CNT];
423 /* Check is PM API version already verified */
424 if (pm_api_version > 0) {
425 *version = pm_api_version;
428 ret = zynqmp_pm_invoke_fn(PM_GET_API_VERSION, ret_payload, 0);
429 *version = ret_payload[1];
433 EXPORT_SYMBOL_GPL(zynqmp_pm_get_api_version);
436 * zynqmp_pm_get_chipid - Get silicon ID registers
437 * @idcode: IDCODE register
438 * @version: version register
440 * Return: Returns the status of the operation and the idcode and version
441 * registers in @idcode and @version.
443 int zynqmp_pm_get_chipid(u32 *idcode, u32 *version)
445 u32 ret_payload[PAYLOAD_ARG_CNT];
448 if (!idcode || !version)
451 ret = zynqmp_pm_invoke_fn(PM_GET_CHIPID, ret_payload, 0);
452 *idcode = ret_payload[1];
453 *version = ret_payload[2];
457 EXPORT_SYMBOL_GPL(zynqmp_pm_get_chipid);
460 * zynqmp_pm_get_family_info() - Get family info of platform
461 * @family: Returned family code value
462 * @subfamily: Returned sub-family code value
464 * Return: Returns status, either success or error+reason
466 int zynqmp_pm_get_family_info(u32 *family, u32 *subfamily)
468 u32 ret_payload[PAYLOAD_ARG_CNT];
472 /* Check is family or sub-family code already received */
473 if (pm_family_code && pm_sub_family_code) {
474 *family = pm_family_code;
475 *subfamily = pm_sub_family_code;
479 ret = zynqmp_pm_invoke_fn(PM_GET_CHIPID, ret_payload, 0);
483 idcode = ret_payload[1];
484 pm_family_code = FIELD_GET(FAMILY_CODE_MASK, idcode);
485 pm_sub_family_code = FIELD_GET(SUB_FAMILY_CODE_MASK, idcode);
486 *family = pm_family_code;
487 *subfamily = pm_sub_family_code;
491 EXPORT_SYMBOL_GPL(zynqmp_pm_get_family_info);
494 * zynqmp_pm_get_trustzone_version() - Get secure trustzone firmware version
495 * @version: Returned version value
497 * Return: Returns status, either success or error+reason
499 static int zynqmp_pm_get_trustzone_version(u32 *version)
501 u32 ret_payload[PAYLOAD_ARG_CNT];
507 /* Check is PM trustzone version already verified */
508 if (pm_tz_version > 0) {
509 *version = pm_tz_version;
512 ret = zynqmp_pm_invoke_fn(PM_GET_TRUSTZONE_VERSION, ret_payload, 0);
513 *version = ret_payload[1];
519 * get_set_conduit_method() - Choose SMC or HVC based communication
520 * @np: Pointer to the device_node structure
522 * Use SMC or HVC-based functions to communicate with EL2/EL3.
524 * Return: Returns 0 on success or error code
526 static int get_set_conduit_method(struct device_node *np)
530 if (of_property_read_string(np, "method", &method)) {
531 pr_warn("%s missing \"method\" property\n", __func__);
535 if (!strcmp("hvc", method)) {
536 do_fw_call = do_fw_call_hvc;
537 } else if (!strcmp("smc", method)) {
538 do_fw_call = do_fw_call_smc;
540 pr_warn("%s Invalid \"method\" property: %s\n",
549 * zynqmp_pm_query_data() - Get query data from firmware
550 * @qdata: Variable to the zynqmp_pm_query_data structure
551 * @out: Returned output value
553 * Return: Returns status, either success or error+reason
555 int zynqmp_pm_query_data(struct zynqmp_pm_query_data qdata, u32 *out)
559 ret = zynqmp_pm_invoke_fn(PM_QUERY_DATA, out, 4, qdata.qid, qdata.arg1, qdata.arg2,
563 * For clock name query, all bytes in SMC response are clock name
564 * characters and return code is always success. For invalid clocks,
565 * clock name bytes would be zeros.
567 return qdata.qid == PM_QID_CLOCK_GET_NAME ? 0 : ret;
569 EXPORT_SYMBOL_GPL(zynqmp_pm_query_data);
572 * zynqmp_pm_clock_enable() - Enable the clock for given id
573 * @clock_id: ID of the clock to be enabled
575 * This function is used by master to enable the clock
576 * including peripherals and PLL clocks.
578 * Return: Returns status, either success or error+reason
580 int zynqmp_pm_clock_enable(u32 clock_id)
582 return zynqmp_pm_invoke_fn(PM_CLOCK_ENABLE, NULL, 1, clock_id);
584 EXPORT_SYMBOL_GPL(zynqmp_pm_clock_enable);
587 * zynqmp_pm_clock_disable() - Disable the clock for given id
588 * @clock_id: ID of the clock to be disable
590 * This function is used by master to disable the clock
591 * including peripherals and PLL clocks.
593 * Return: Returns status, either success or error+reason
595 int zynqmp_pm_clock_disable(u32 clock_id)
597 return zynqmp_pm_invoke_fn(PM_CLOCK_DISABLE, NULL, 1, clock_id);
599 EXPORT_SYMBOL_GPL(zynqmp_pm_clock_disable);
602 * zynqmp_pm_clock_getstate() - Get the clock state for given id
603 * @clock_id: ID of the clock to be queried
604 * @state: 1/0 (Enabled/Disabled)
606 * This function is used by master to get the state of clock
607 * including peripherals and PLL clocks.
609 * Return: Returns status, either success or error+reason
611 int zynqmp_pm_clock_getstate(u32 clock_id, u32 *state)
613 u32 ret_payload[PAYLOAD_ARG_CNT];
616 ret = zynqmp_pm_invoke_fn(PM_CLOCK_GETSTATE, ret_payload, 1, clock_id);
617 *state = ret_payload[1];
621 EXPORT_SYMBOL_GPL(zynqmp_pm_clock_getstate);
624 * zynqmp_pm_clock_setdivider() - Set the clock divider for given id
625 * @clock_id: ID of the clock
626 * @divider: divider value
628 * This function is used by master to set divider for any clock
629 * to achieve desired rate.
631 * Return: Returns status, either success or error+reason
633 int zynqmp_pm_clock_setdivider(u32 clock_id, u32 divider)
635 return zynqmp_pm_invoke_fn(PM_CLOCK_SETDIVIDER, NULL, 2, clock_id, divider);
637 EXPORT_SYMBOL_GPL(zynqmp_pm_clock_setdivider);
640 * zynqmp_pm_clock_getdivider() - Get the clock divider for given id
641 * @clock_id: ID of the clock
642 * @divider: divider value
644 * This function is used by master to get divider values
647 * Return: Returns status, either success or error+reason
649 int zynqmp_pm_clock_getdivider(u32 clock_id, u32 *divider)
651 u32 ret_payload[PAYLOAD_ARG_CNT];
654 ret = zynqmp_pm_invoke_fn(PM_CLOCK_GETDIVIDER, ret_payload, 1, clock_id);
655 *divider = ret_payload[1];
659 EXPORT_SYMBOL_GPL(zynqmp_pm_clock_getdivider);
662 * zynqmp_pm_clock_setparent() - Set the clock parent for given id
663 * @clock_id: ID of the clock
664 * @parent_id: parent id
666 * This function is used by master to set parent for any clock.
668 * Return: Returns status, either success or error+reason
670 int zynqmp_pm_clock_setparent(u32 clock_id, u32 parent_id)
672 return zynqmp_pm_invoke_fn(PM_CLOCK_SETPARENT, NULL, 2, clock_id, parent_id);
674 EXPORT_SYMBOL_GPL(zynqmp_pm_clock_setparent);
677 * zynqmp_pm_clock_getparent() - Get the clock parent for given id
678 * @clock_id: ID of the clock
679 * @parent_id: parent id
681 * This function is used by master to get parent index
684 * Return: Returns status, either success or error+reason
686 int zynqmp_pm_clock_getparent(u32 clock_id, u32 *parent_id)
688 u32 ret_payload[PAYLOAD_ARG_CNT];
691 ret = zynqmp_pm_invoke_fn(PM_CLOCK_GETPARENT, ret_payload, 1, clock_id);
692 *parent_id = ret_payload[1];
696 EXPORT_SYMBOL_GPL(zynqmp_pm_clock_getparent);
699 * zynqmp_pm_set_pll_frac_mode() - PM API for set PLL mode
701 * @clk_id: PLL clock ID
702 * @mode: PLL mode (PLL_MODE_FRAC/PLL_MODE_INT)
704 * This function sets PLL mode
706 * Return: Returns status, either success or error+reason
708 int zynqmp_pm_set_pll_frac_mode(u32 clk_id, u32 mode)
710 return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 4, 0, IOCTL_SET_PLL_FRAC_MODE, clk_id, mode);
712 EXPORT_SYMBOL_GPL(zynqmp_pm_set_pll_frac_mode);
715 * zynqmp_pm_get_pll_frac_mode() - PM API for get PLL mode
717 * @clk_id: PLL clock ID
720 * This function return current PLL mode
722 * Return: Returns status, either success or error+reason
724 int zynqmp_pm_get_pll_frac_mode(u32 clk_id, u32 *mode)
726 return zynqmp_pm_invoke_fn(PM_IOCTL, mode, 3, 0, IOCTL_GET_PLL_FRAC_MODE, clk_id);
728 EXPORT_SYMBOL_GPL(zynqmp_pm_get_pll_frac_mode);
731 * zynqmp_pm_set_pll_frac_data() - PM API for setting pll fraction data
733 * @clk_id: PLL clock ID
734 * @data: fraction data
736 * This function sets fraction data.
737 * It is valid for fraction mode only.
739 * Return: Returns status, either success or error+reason
741 int zynqmp_pm_set_pll_frac_data(u32 clk_id, u32 data)
743 return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 4, 0, IOCTL_SET_PLL_FRAC_DATA, clk_id, data);
745 EXPORT_SYMBOL_GPL(zynqmp_pm_set_pll_frac_data);
748 * zynqmp_pm_get_pll_frac_data() - PM API for getting pll fraction data
750 * @clk_id: PLL clock ID
751 * @data: fraction data
753 * This function returns fraction data value.
755 * Return: Returns status, either success or error+reason
757 int zynqmp_pm_get_pll_frac_data(u32 clk_id, u32 *data)
759 return zynqmp_pm_invoke_fn(PM_IOCTL, data, 3, 0, IOCTL_GET_PLL_FRAC_DATA, clk_id);
761 EXPORT_SYMBOL_GPL(zynqmp_pm_get_pll_frac_data);
764 * zynqmp_pm_set_sd_tapdelay() - Set tap delay for the SD device
766 * @node_id: Node ID of the device
767 * @type: Type of tap delay to set (input/output)
768 * @value: Value to set fot the tap delay
770 * This function sets input/output tap delay for the SD device.
772 * Return: Returns status, either success or error+reason
774 int zynqmp_pm_set_sd_tapdelay(u32 node_id, u32 type, u32 value)
776 u32 reg = (type == PM_TAPDELAY_INPUT) ? SD_ITAPDLY : SD_OTAPDLYSEL;
777 u32 mask = (node_id == NODE_SD_0) ? GENMASK(15, 0) : GENMASK(31, 16);
780 return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 4, node_id, IOCTL_SET_SD_TAPDELAY, type,
785 * Work around completely misdesigned firmware API on Xilinx ZynqMP.
786 * The IOCTL_SET_SD_TAPDELAY firmware call allows the caller to only
787 * ever set IOU_SLCR SD_ITAPDLY Register SD0_ITAPDLYENA/SD1_ITAPDLYENA
788 * bits, but there is no matching call to clear those bits. If those
789 * bits are not cleared, SDMMC tuning may fail.
791 * Luckily, there are PM_MMIO_READ/PM_MMIO_WRITE calls which seem to
792 * allow complete unrestricted access to all address space, including
793 * IOU_SLCR SD_ITAPDLY Register and all the other registers, access
794 * to which was supposed to be protected by the current firmware API.
796 * Use PM_MMIO_READ/PM_MMIO_WRITE to re-implement the missing counter
797 * part of IOCTL_SET_SD_TAPDELAY which clears SDx_ITAPDLYENA bits.
799 return zynqmp_pm_invoke_fn(PM_MMIO_WRITE, NULL, 2, reg, mask);
801 EXPORT_SYMBOL_GPL(zynqmp_pm_set_sd_tapdelay);
804 * zynqmp_pm_sd_dll_reset() - Reset DLL logic
806 * @node_id: Node ID of the device
809 * This function resets DLL logic for the SD device.
811 * Return: Returns status, either success or error+reason
813 int zynqmp_pm_sd_dll_reset(u32 node_id, u32 type)
815 return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 3, node_id, IOCTL_SD_DLL_RESET, type);
817 EXPORT_SYMBOL_GPL(zynqmp_pm_sd_dll_reset);
820 * zynqmp_pm_ospi_mux_select() - OSPI Mux selection
822 * @dev_id: Device Id of the OSPI device.
823 * @select: OSPI Mux select value.
825 * This function select the OSPI Mux.
827 * Return: Returns status, either success or error+reason
829 int zynqmp_pm_ospi_mux_select(u32 dev_id, u32 select)
831 return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 3, dev_id, IOCTL_OSPI_MUX_SELECT, select);
833 EXPORT_SYMBOL_GPL(zynqmp_pm_ospi_mux_select);
836 * zynqmp_pm_write_ggs() - PM API for writing global general storage (ggs)
837 * @index: GGS register index
838 * @value: Register value to be written
840 * This function writes value to GGS register.
842 * Return: Returns status, either success or error+reason
844 int zynqmp_pm_write_ggs(u32 index, u32 value)
846 return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 4, 0, IOCTL_WRITE_GGS, index, value);
848 EXPORT_SYMBOL_GPL(zynqmp_pm_write_ggs);
851 * zynqmp_pm_read_ggs() - PM API for reading global general storage (ggs)
852 * @index: GGS register index
853 * @value: Register value to be written
855 * This function returns GGS register value.
857 * Return: Returns status, either success or error+reason
859 int zynqmp_pm_read_ggs(u32 index, u32 *value)
861 return zynqmp_pm_invoke_fn(PM_IOCTL, value, 3, 0, IOCTL_READ_GGS, index);
863 EXPORT_SYMBOL_GPL(zynqmp_pm_read_ggs);
866 * zynqmp_pm_write_pggs() - PM API for writing persistent global general
868 * @index: PGGS register index
869 * @value: Register value to be written
871 * This function writes value to PGGS register.
873 * Return: Returns status, either success or error+reason
875 int zynqmp_pm_write_pggs(u32 index, u32 value)
877 return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 4, 0, IOCTL_WRITE_PGGS, index, value);
879 EXPORT_SYMBOL_GPL(zynqmp_pm_write_pggs);
882 * zynqmp_pm_read_pggs() - PM API for reading persistent global general
884 * @index: PGGS register index
885 * @value: Register value to be written
887 * This function returns PGGS register value.
889 * Return: Returns status, either success or error+reason
891 int zynqmp_pm_read_pggs(u32 index, u32 *value)
893 return zynqmp_pm_invoke_fn(PM_IOCTL, value, 3, 0, IOCTL_READ_PGGS, index);
895 EXPORT_SYMBOL_GPL(zynqmp_pm_read_pggs);
897 int zynqmp_pm_set_tapdelay_bypass(u32 index, u32 value)
899 return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 4, 0, IOCTL_SET_TAPDELAY_BYPASS, index, value);
901 EXPORT_SYMBOL_GPL(zynqmp_pm_set_tapdelay_bypass);
904 * zynqmp_pm_set_boot_health_status() - PM API for setting healthy boot status
905 * @value: Status value to be written
907 * This function sets healthy bit value to indicate boot health status
910 * Return: Returns status, either success or error+reason
912 int zynqmp_pm_set_boot_health_status(u32 value)
914 return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 3, 0, IOCTL_SET_BOOT_HEALTH_STATUS, value);
918 * zynqmp_pm_reset_assert - Request setting of reset (1 - assert, 0 - release)
919 * @reset: Reset to be configured
920 * @assert_flag: Flag stating should reset be asserted (1) or
923 * Return: Returns status, either success or error+reason
925 int zynqmp_pm_reset_assert(const enum zynqmp_pm_reset reset,
926 const enum zynqmp_pm_reset_action assert_flag)
928 return zynqmp_pm_invoke_fn(PM_RESET_ASSERT, NULL, 2, reset, assert_flag);
930 EXPORT_SYMBOL_GPL(zynqmp_pm_reset_assert);
933 * zynqmp_pm_reset_get_status - Get status of the reset
934 * @reset: Reset whose status should be returned
935 * @status: Returned status
937 * Return: Returns status, either success or error+reason
939 int zynqmp_pm_reset_get_status(const enum zynqmp_pm_reset reset, u32 *status)
941 u32 ret_payload[PAYLOAD_ARG_CNT];
947 ret = zynqmp_pm_invoke_fn(PM_RESET_GET_STATUS, ret_payload, 1, reset);
948 *status = ret_payload[1];
952 EXPORT_SYMBOL_GPL(zynqmp_pm_reset_get_status);
955 * zynqmp_pm_fpga_load - Perform the fpga load
956 * @address: Address to write to
957 * @size: pl bitstream size
958 * @flags: Bitstream type
959 * -XILINX_ZYNQMP_PM_FPGA_FULL: FPGA full reconfiguration
960 * -XILINX_ZYNQMP_PM_FPGA_PARTIAL: FPGA partial reconfiguration
962 * This function provides access to pmufw. To transfer
963 * the required bitstream into PL.
965 * Return: Returns status, either success or error+reason
967 int zynqmp_pm_fpga_load(const u64 address, const u32 size, const u32 flags)
969 u32 ret_payload[PAYLOAD_ARG_CNT];
972 ret = zynqmp_pm_invoke_fn(PM_FPGA_LOAD, ret_payload, 4, lower_32_bits(address),
973 upper_32_bits(address), size, flags);
975 return -ret_payload[0];
979 EXPORT_SYMBOL_GPL(zynqmp_pm_fpga_load);
982 * zynqmp_pm_fpga_get_status - Read value from PCAP status register
983 * @value: Value to read
985 * This function provides access to the pmufw to get the PCAP
988 * Return: Returns status, either success or error+reason
990 int zynqmp_pm_fpga_get_status(u32 *value)
992 u32 ret_payload[PAYLOAD_ARG_CNT];
998 ret = zynqmp_pm_invoke_fn(PM_FPGA_GET_STATUS, ret_payload, 0);
999 *value = ret_payload[1];
1003 EXPORT_SYMBOL_GPL(zynqmp_pm_fpga_get_status);
1006 * zynqmp_pm_fpga_get_config_status - Get the FPGA configuration status.
1007 * @value: Buffer to store FPGA configuration status.
1009 * This function provides access to the pmufw to get the FPGA configuration
1012 * Return: 0 on success, a negative value on error
1014 int zynqmp_pm_fpga_get_config_status(u32 *value)
1016 u32 ret_payload[PAYLOAD_ARG_CNT];
1017 u32 buf, lower_addr, upper_addr;
1023 lower_addr = lower_32_bits((u64)&buf);
1024 upper_addr = upper_32_bits((u64)&buf);
1026 ret = zynqmp_pm_invoke_fn(PM_FPGA_READ, ret_payload, 4,
1027 XILINX_ZYNQMP_PM_FPGA_CONFIG_STAT_OFFSET, lower_addr, upper_addr,
1028 XILINX_ZYNQMP_PM_FPGA_READ_CONFIG_REG);
1030 *value = ret_payload[1];
1034 EXPORT_SYMBOL_GPL(zynqmp_pm_fpga_get_config_status);
1037 * zynqmp_pm_pinctrl_request - Request Pin from firmware
1038 * @pin: Pin number to request
1040 * This function requests pin from firmware.
1042 * Return: Returns status, either success or error+reason.
1044 int zynqmp_pm_pinctrl_request(const u32 pin)
1046 return zynqmp_pm_invoke_fn(PM_PINCTRL_REQUEST, NULL, 1, pin);
1048 EXPORT_SYMBOL_GPL(zynqmp_pm_pinctrl_request);
1051 * zynqmp_pm_pinctrl_release - Inform firmware that Pin control is released
1052 * @pin: Pin number to release
1054 * This function release pin from firmware.
1056 * Return: Returns status, either success or error+reason.
1058 int zynqmp_pm_pinctrl_release(const u32 pin)
1060 return zynqmp_pm_invoke_fn(PM_PINCTRL_RELEASE, NULL, 1, pin);
1062 EXPORT_SYMBOL_GPL(zynqmp_pm_pinctrl_release);
1065 * zynqmp_pm_pinctrl_set_function - Set requested function for the pin
1067 * @id: Function ID to set
1069 * This function sets requested function for the given pin.
1071 * Return: Returns status, either success or error+reason.
1073 int zynqmp_pm_pinctrl_set_function(const u32 pin, const u32 id)
1075 return zynqmp_pm_invoke_fn(PM_PINCTRL_SET_FUNCTION, NULL, 2, pin, id);
1077 EXPORT_SYMBOL_GPL(zynqmp_pm_pinctrl_set_function);
1080 * zynqmp_pm_pinctrl_get_config - Get configuration parameter for the pin
1082 * @param: Parameter to get
1083 * @value: Buffer to store parameter value
1085 * This function gets requested configuration parameter for the given pin.
1087 * Return: Returns status, either success or error+reason.
1089 int zynqmp_pm_pinctrl_get_config(const u32 pin, const u32 param,
1092 u32 ret_payload[PAYLOAD_ARG_CNT];
1098 ret = zynqmp_pm_invoke_fn(PM_PINCTRL_CONFIG_PARAM_GET, ret_payload, 2, pin, param);
1099 *value = ret_payload[1];
1103 EXPORT_SYMBOL_GPL(zynqmp_pm_pinctrl_get_config);
1106 * zynqmp_pm_pinctrl_set_config - Set configuration parameter for the pin
1108 * @param: Parameter to set
1109 * @value: Parameter value to set
1111 * This function sets requested configuration parameter for the given pin.
1113 * Return: Returns status, either success or error+reason.
1115 int zynqmp_pm_pinctrl_set_config(const u32 pin, const u32 param,
1120 if (pm_family_code == ZYNQMP_FAMILY_CODE &&
1121 param == PM_PINCTRL_CONFIG_TRI_STATE) {
1122 ret = zynqmp_pm_feature(PM_PINCTRL_CONFIG_PARAM_SET);
1123 if (ret < PM_PINCTRL_PARAM_SET_VERSION)
1127 return zynqmp_pm_invoke_fn(PM_PINCTRL_CONFIG_PARAM_SET, NULL, 3, pin, param, value);
1129 EXPORT_SYMBOL_GPL(zynqmp_pm_pinctrl_set_config);
1132 * zynqmp_pm_bootmode_read() - PM Config API for read bootpin status
1133 * @ps_mode: Returned output value of ps_mode
1135 * This API function is to be used for notify the power management controller
1136 * to read bootpin status.
1138 * Return: status, either success or error+reason
1140 unsigned int zynqmp_pm_bootmode_read(u32 *ps_mode)
1143 u32 ret_payload[PAYLOAD_ARG_CNT];
1145 ret = zynqmp_pm_invoke_fn(PM_MMIO_READ, ret_payload, 1, CRL_APB_BOOT_PIN_CTRL);
1147 *ps_mode = ret_payload[1];
1151 EXPORT_SYMBOL_GPL(zynqmp_pm_bootmode_read);
1154 * zynqmp_pm_bootmode_write() - PM Config API for Configure bootpin
1155 * @ps_mode: Value to be written to the bootpin ctrl register
1157 * This API function is to be used for notify the power management controller
1158 * to configure bootpin.
1160 * Return: Returns status, either success or error+reason
1162 int zynqmp_pm_bootmode_write(u32 ps_mode)
1164 return zynqmp_pm_invoke_fn(PM_MMIO_WRITE, NULL, 3, CRL_APB_BOOT_PIN_CTRL,
1165 CRL_APB_BOOTPIN_CTRL_MASK, ps_mode);
1167 EXPORT_SYMBOL_GPL(zynqmp_pm_bootmode_write);
1170 * zynqmp_pm_init_finalize() - PM call to inform firmware that the caller
1171 * master has initialized its own power management
1173 * Return: Returns status, either success or error+reason
1175 * This API function is to be used for notify the power management controller
1176 * about the completed power management initialization.
1178 int zynqmp_pm_init_finalize(void)
1180 return zynqmp_pm_invoke_fn(PM_PM_INIT_FINALIZE, NULL, 0);
1182 EXPORT_SYMBOL_GPL(zynqmp_pm_init_finalize);
1185 * zynqmp_pm_set_suspend_mode() - Set system suspend mode
1186 * @mode: Mode to set for system suspend
1188 * This API function is used to set mode of system suspend.
1190 * Return: Returns status, either success or error+reason
1192 int zynqmp_pm_set_suspend_mode(u32 mode)
1194 return zynqmp_pm_invoke_fn(PM_SET_SUSPEND_MODE, NULL, 1, mode);
1196 EXPORT_SYMBOL_GPL(zynqmp_pm_set_suspend_mode);
1199 * zynqmp_pm_request_node() - Request a node with specific capabilities
1200 * @node: Node ID of the slave
1201 * @capabilities: Requested capabilities of the slave
1202 * @qos: Quality of service (not supported)
1203 * @ack: Flag to specify whether acknowledge is requested
1205 * This function is used by master to request particular node from firmware.
1206 * Every master must request node before using it.
1208 * Return: Returns status, either success or error+reason
1210 int zynqmp_pm_request_node(const u32 node, const u32 capabilities,
1211 const u32 qos, const enum zynqmp_pm_request_ack ack)
1213 return zynqmp_pm_invoke_fn(PM_REQUEST_NODE, NULL, 4, node, capabilities, qos, ack);
1215 EXPORT_SYMBOL_GPL(zynqmp_pm_request_node);
1218 * zynqmp_pm_release_node() - Release a node
1219 * @node: Node ID of the slave
1221 * This function is used by master to inform firmware that master
1222 * has released node. Once released, master must not use that node
1223 * without re-request.
1225 * Return: Returns status, either success or error+reason
1227 int zynqmp_pm_release_node(const u32 node)
1229 return zynqmp_pm_invoke_fn(PM_RELEASE_NODE, NULL, 1, node);
1231 EXPORT_SYMBOL_GPL(zynqmp_pm_release_node);
1234 * zynqmp_pm_get_rpu_mode() - Get RPU mode
1235 * @node_id: Node ID of the device
1236 * @rpu_mode: return by reference value
1237 * either split or lockstep
1239 * Return: return 0 on success or error+reason.
1240 * if success, then rpu_mode will be set
1241 * to current rpu mode.
1243 int zynqmp_pm_get_rpu_mode(u32 node_id, enum rpu_oper_mode *rpu_mode)
1245 u32 ret_payload[PAYLOAD_ARG_CNT];
1248 ret = zynqmp_pm_invoke_fn(PM_IOCTL, ret_payload, 2, node_id, IOCTL_GET_RPU_OPER_MODE);
1250 /* only set rpu_mode if no error */
1251 if (ret == XST_PM_SUCCESS)
1252 *rpu_mode = ret_payload[0];
1256 EXPORT_SYMBOL_GPL(zynqmp_pm_get_rpu_mode);
1259 * zynqmp_pm_set_rpu_mode() - Set RPU mode
1260 * @node_id: Node ID of the device
1261 * @rpu_mode: Argument 1 to requested IOCTL call. either split or lockstep
1263 * This function is used to set RPU mode to split or
1266 * Return: Returns status, either success or error+reason
1268 int zynqmp_pm_set_rpu_mode(u32 node_id, enum rpu_oper_mode rpu_mode)
1270 return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 3, node_id, IOCTL_SET_RPU_OPER_MODE,
1273 EXPORT_SYMBOL_GPL(zynqmp_pm_set_rpu_mode);
1276 * zynqmp_pm_set_tcm_config - configure TCM
1277 * @node_id: Firmware specific TCM subsystem ID
1278 * @tcm_mode: Argument 1 to requested IOCTL call
1279 * either PM_RPU_TCM_COMB or PM_RPU_TCM_SPLIT
1281 * This function is used to set RPU mode to split or combined
1283 * Return: status: 0 for success, else failure
1285 int zynqmp_pm_set_tcm_config(u32 node_id, enum rpu_tcm_comb tcm_mode)
1287 return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 3, node_id, IOCTL_TCM_COMB_CONFIG,
1290 EXPORT_SYMBOL_GPL(zynqmp_pm_set_tcm_config);
1293 * zynqmp_pm_force_pwrdwn - PM call to request for another PU or subsystem to
1294 * be powered down forcefully
1295 * @node: Node ID of the targeted PU or subsystem
1296 * @ack: Flag to specify whether acknowledge is requested
1298 * Return: status, either success or error+reason
1300 int zynqmp_pm_force_pwrdwn(const u32 node,
1301 const enum zynqmp_pm_request_ack ack)
1303 return zynqmp_pm_invoke_fn(PM_FORCE_POWERDOWN, NULL, 2, node, ack);
1305 EXPORT_SYMBOL_GPL(zynqmp_pm_force_pwrdwn);
1308 * zynqmp_pm_request_wake - PM call to wake up selected master or subsystem
1309 * @node: Node ID of the master or subsystem
1310 * @set_addr: Specifies whether the address argument is relevant
1311 * @address: Address from which to resume when woken up
1312 * @ack: Flag to specify whether acknowledge requested
1314 * Return: status, either success or error+reason
1316 int zynqmp_pm_request_wake(const u32 node,
1317 const bool set_addr,
1319 const enum zynqmp_pm_request_ack ack)
1321 /* set_addr flag is encoded into 1st bit of address */
1322 return zynqmp_pm_invoke_fn(PM_REQUEST_WAKEUP, NULL, 4, node, address | set_addr,
1323 address >> 32, ack);
1325 EXPORT_SYMBOL_GPL(zynqmp_pm_request_wake);
1328 * zynqmp_pm_set_requirement() - PM call to set requirement for PM slaves
1329 * @node: Node ID of the slave
1330 * @capabilities: Requested capabilities of the slave
1331 * @qos: Quality of service (not supported)
1332 * @ack: Flag to specify whether acknowledge is requested
1334 * This API function is to be used for slaves a PU already has requested
1335 * to change its capabilities.
1337 * Return: Returns status, either success or error+reason
1339 int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
1341 const enum zynqmp_pm_request_ack ack)
1343 return zynqmp_pm_invoke_fn(PM_SET_REQUIREMENT, NULL, 4, node, capabilities, qos, ack);
1345 EXPORT_SYMBOL_GPL(zynqmp_pm_set_requirement);
1348 * zynqmp_pm_load_pdi - Load and process PDI
1349 * @src: Source device where PDI is located
1350 * @address: PDI src address
1352 * This function provides support to load PDI from linux
1354 * Return: Returns status, either success or error+reason
1356 int zynqmp_pm_load_pdi(const u32 src, const u64 address)
1358 return zynqmp_pm_invoke_fn(PM_LOAD_PDI, NULL, 3, src, lower_32_bits(address),
1359 upper_32_bits(address));
1361 EXPORT_SYMBOL_GPL(zynqmp_pm_load_pdi);
1364 * zynqmp_pm_aes_engine - Access AES hardware to encrypt/decrypt the data using
1366 * @address: Address of the AesParams structure.
1367 * @out: Returned output value
1369 * Return: Returns status, either success or error code.
1371 int zynqmp_pm_aes_engine(const u64 address, u32 *out)
1373 u32 ret_payload[PAYLOAD_ARG_CNT];
1379 ret = zynqmp_pm_invoke_fn(PM_SECURE_AES, ret_payload, 2, upper_32_bits(address),
1380 lower_32_bits(address));
1381 *out = ret_payload[1];
1385 EXPORT_SYMBOL_GPL(zynqmp_pm_aes_engine);
1388 * zynqmp_pm_sha_hash - Access the SHA engine to calculate the hash
1389 * @address: Address of the data/ Address of output buffer where
1390 * hash should be stored.
1391 * @size: Size of the data.
1393 * BIT(0) - for initializing csudma driver and SHA3(Here address
1394 * and size inputs can be NULL).
1395 * BIT(1) - to call Sha3_Update API which can be called multiple
1396 * times when data is not contiguous.
1397 * BIT(2) - to get final hash of the whole updated data.
1398 * Hash will be overwritten at provided address with
1401 * Return: Returns status, either success or error code.
1403 int zynqmp_pm_sha_hash(const u64 address, const u32 size, const u32 flags)
1405 u32 lower_addr = lower_32_bits(address);
1406 u32 upper_addr = upper_32_bits(address);
1408 return zynqmp_pm_invoke_fn(PM_SECURE_SHA, NULL, 4, upper_addr, lower_addr, size, flags);
1410 EXPORT_SYMBOL_GPL(zynqmp_pm_sha_hash);
1413 * zynqmp_pm_register_notifier() - PM API for register a subsystem
1414 * to be notified about specific
1416 * @node: Node ID to which the event is related.
1417 * @event: Event Mask of Error events for which wants to get notified.
1418 * @wake: Wake subsystem upon capturing the event if value 1
1419 * @enable: Enable the registration for value 1, disable for value 0
1421 * This function is used to register/un-register for particular node-event
1422 * combination in firmware.
1424 * Return: Returns status, either success or error+reason
1427 int zynqmp_pm_register_notifier(const u32 node, const u32 event,
1428 const u32 wake, const u32 enable)
1430 return zynqmp_pm_invoke_fn(PM_REGISTER_NOTIFIER, NULL, 4, node, event, wake, enable);
1432 EXPORT_SYMBOL_GPL(zynqmp_pm_register_notifier);
1435 * zynqmp_pm_system_shutdown - PM call to request a system shutdown or restart
1436 * @type: Shutdown or restart? 0 for shutdown, 1 for restart
1437 * @subtype: Specifies which system should be restarted or shut down
1439 * Return: Returns status, either success or error+reason
1441 int zynqmp_pm_system_shutdown(const u32 type, const u32 subtype)
1443 return zynqmp_pm_invoke_fn(PM_SYSTEM_SHUTDOWN, NULL, 2, type, subtype);
1447 * zynqmp_pm_set_feature_config - PM call to request IOCTL for feature config
1448 * @id: The config ID of the feature to be configured
1449 * @value: The config value of the feature to be configured
1451 * Return: Returns 0 on success or error value on failure.
1453 int zynqmp_pm_set_feature_config(enum pm_feature_config_id id, u32 value)
1455 return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 4, 0, IOCTL_SET_FEATURE_CONFIG, id, value);
1459 * zynqmp_pm_get_feature_config - PM call to get value of configured feature
1460 * @id: The config id of the feature to be queried
1461 * @payload: Returned value array
1463 * Return: Returns 0 on success or error value on failure.
1465 int zynqmp_pm_get_feature_config(enum pm_feature_config_id id,
1468 return zynqmp_pm_invoke_fn(PM_IOCTL, payload, 3, 0, IOCTL_GET_FEATURE_CONFIG, id);
1472 * zynqmp_pm_set_sd_config - PM call to set value of SD config registers
1474 * @config: The config type of SD registers
1475 * @value: Value to be set
1477 * Return: Returns 0 on success or error value on failure.
1479 int zynqmp_pm_set_sd_config(u32 node, enum pm_sd_config_type config, u32 value)
1481 return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 4, node, IOCTL_SET_SD_CONFIG, config, value);
1483 EXPORT_SYMBOL_GPL(zynqmp_pm_set_sd_config);
1486 * zynqmp_pm_set_gem_config - PM call to set value of GEM config registers
1487 * @node: GEM node ID
1488 * @config: The config type of GEM registers
1489 * @value: Value to be set
1491 * Return: Returns 0 on success or error value on failure.
1493 int zynqmp_pm_set_gem_config(u32 node, enum pm_gem_config_type config,
1496 return zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 4, node, IOCTL_SET_GEM_CONFIG, config, value);
1498 EXPORT_SYMBOL_GPL(zynqmp_pm_set_gem_config);
1501 * struct zynqmp_pm_shutdown_scope - Struct for shutdown scope
1502 * @subtype: Shutdown subtype
1503 * @name: Matching string for scope argument
1505 * This struct encapsulates mapping between shutdown scope ID and string.
1507 struct zynqmp_pm_shutdown_scope {
1508 const enum zynqmp_pm_shutdown_subtype subtype;
1512 static struct zynqmp_pm_shutdown_scope shutdown_scopes[] = {
1513 [ZYNQMP_PM_SHUTDOWN_SUBTYPE_SUBSYSTEM] = {
1514 .subtype = ZYNQMP_PM_SHUTDOWN_SUBTYPE_SUBSYSTEM,
1515 .name = "subsystem",
1517 [ZYNQMP_PM_SHUTDOWN_SUBTYPE_PS_ONLY] = {
1518 .subtype = ZYNQMP_PM_SHUTDOWN_SUBTYPE_PS_ONLY,
1521 [ZYNQMP_PM_SHUTDOWN_SUBTYPE_SYSTEM] = {
1522 .subtype = ZYNQMP_PM_SHUTDOWN_SUBTYPE_SYSTEM,
1527 static struct zynqmp_pm_shutdown_scope *selected_scope =
1528 &shutdown_scopes[ZYNQMP_PM_SHUTDOWN_SUBTYPE_SYSTEM];
1531 * zynqmp_pm_is_shutdown_scope_valid - Check if shutdown scope string is valid
1532 * @scope_string: Shutdown scope string
1534 * Return: Return pointer to matching shutdown scope struct from
1535 * array of available options in system if string is valid,
1536 * otherwise returns NULL.
1538 static struct zynqmp_pm_shutdown_scope*
1539 zynqmp_pm_is_shutdown_scope_valid(const char *scope_string)
1543 for (count = 0; count < ARRAY_SIZE(shutdown_scopes); count++)
1544 if (sysfs_streq(scope_string, shutdown_scopes[count].name))
1545 return &shutdown_scopes[count];
1550 static ssize_t shutdown_scope_show(struct device *device,
1551 struct device_attribute *attr,
1556 for (i = 0; i < ARRAY_SIZE(shutdown_scopes); i++) {
1557 if (&shutdown_scopes[i] == selected_scope) {
1559 strcat(buf, shutdown_scopes[i].name);
1562 strcat(buf, shutdown_scopes[i].name);
1571 static ssize_t shutdown_scope_store(struct device *device,
1572 struct device_attribute *attr,
1573 const char *buf, size_t count)
1576 struct zynqmp_pm_shutdown_scope *scope;
1578 scope = zynqmp_pm_is_shutdown_scope_valid(buf);
1582 ret = zynqmp_pm_system_shutdown(ZYNQMP_PM_SHUTDOWN_TYPE_SETSCOPE_ONLY,
1585 pr_err("unable to set shutdown scope %s\n", buf);
1589 selected_scope = scope;
1594 static DEVICE_ATTR_RW(shutdown_scope);
1596 static ssize_t health_status_store(struct device *device,
1597 struct device_attribute *attr,
1598 const char *buf, size_t count)
1603 ret = kstrtouint(buf, 10, &value);
1607 ret = zynqmp_pm_set_boot_health_status(value);
1609 dev_err(device, "unable to set healthy bit value to %u\n",
1617 static DEVICE_ATTR_WO(health_status);
1619 static ssize_t ggs_show(struct device *device,
1620 struct device_attribute *attr,
1625 u32 ret_payload[PAYLOAD_ARG_CNT];
1627 ret = zynqmp_pm_read_ggs(reg, ret_payload);
1631 return sprintf(buf, "0x%x\n", ret_payload[1]);
1634 static ssize_t ggs_store(struct device *device,
1635 struct device_attribute *attr,
1636 const char *buf, size_t count,
1642 if (reg >= GSS_NUM_REGS)
1645 ret = kstrtol(buf, 16, &value);
1651 ret = zynqmp_pm_write_ggs(reg, value);
1658 /* GGS register show functions */
1659 #define GGS0_SHOW(N) \
1660 ssize_t ggs##N##_show(struct device *device, \
1661 struct device_attribute *attr, \
1664 return ggs_show(device, attr, buf, N); \
1667 static GGS0_SHOW(0);
1668 static GGS0_SHOW(1);
1669 static GGS0_SHOW(2);
1670 static GGS0_SHOW(3);
1672 /* GGS register store function */
1673 #define GGS0_STORE(N) \
1674 ssize_t ggs##N##_store(struct device *device, \
1675 struct device_attribute *attr, \
1679 return ggs_store(device, attr, buf, count, N); \
1682 static GGS0_STORE(0);
1683 static GGS0_STORE(1);
1684 static GGS0_STORE(2);
1685 static GGS0_STORE(3);
1687 static ssize_t pggs_show(struct device *device,
1688 struct device_attribute *attr,
1693 u32 ret_payload[PAYLOAD_ARG_CNT];
1695 ret = zynqmp_pm_read_pggs(reg, ret_payload);
1699 return sprintf(buf, "0x%x\n", ret_payload[1]);
1702 static ssize_t pggs_store(struct device *device,
1703 struct device_attribute *attr,
1704 const char *buf, size_t count,
1710 if (reg >= GSS_NUM_REGS)
1713 ret = kstrtol(buf, 16, &value);
1719 ret = zynqmp_pm_write_pggs(reg, value);
1727 #define PGGS0_SHOW(N) \
1728 ssize_t pggs##N##_show(struct device *device, \
1729 struct device_attribute *attr, \
1732 return pggs_show(device, attr, buf, N); \
1735 #define PGGS0_STORE(N) \
1736 ssize_t pggs##N##_store(struct device *device, \
1737 struct device_attribute *attr, \
1741 return pggs_store(device, attr, buf, count, N); \
1744 /* PGGS register show functions */
1745 static PGGS0_SHOW(0);
1746 static PGGS0_SHOW(1);
1747 static PGGS0_SHOW(2);
1748 static PGGS0_SHOW(3);
1750 /* PGGS register store functions */
1751 static PGGS0_STORE(0);
1752 static PGGS0_STORE(1);
1753 static PGGS0_STORE(2);
1754 static PGGS0_STORE(3);
1756 /* GGS register attributes */
1757 static DEVICE_ATTR_RW(ggs0);
1758 static DEVICE_ATTR_RW(ggs1);
1759 static DEVICE_ATTR_RW(ggs2);
1760 static DEVICE_ATTR_RW(ggs3);
1762 /* PGGS register attributes */
1763 static DEVICE_ATTR_RW(pggs0);
1764 static DEVICE_ATTR_RW(pggs1);
1765 static DEVICE_ATTR_RW(pggs2);
1766 static DEVICE_ATTR_RW(pggs3);
1768 static ssize_t feature_config_id_show(struct device *device,
1769 struct device_attribute *attr,
1772 struct zynqmp_devinfo *devinfo = dev_get_drvdata(device);
1774 return sysfs_emit(buf, "%d\n", devinfo->feature_conf_id);
1777 static ssize_t feature_config_id_store(struct device *device,
1778 struct device_attribute *attr,
1779 const char *buf, size_t count)
1783 struct zynqmp_devinfo *devinfo = dev_get_drvdata(device);
1788 ret = kstrtou32(buf, 10, &config_id);
1792 devinfo->feature_conf_id = config_id;
1797 static DEVICE_ATTR_RW(feature_config_id);
1799 static ssize_t feature_config_value_show(struct device *device,
1800 struct device_attribute *attr,
1804 u32 ret_payload[PAYLOAD_ARG_CNT];
1805 struct zynqmp_devinfo *devinfo = dev_get_drvdata(device);
1807 ret = zynqmp_pm_get_feature_config(devinfo->feature_conf_id,
1812 return sysfs_emit(buf, "%d\n", ret_payload[1]);
1815 static ssize_t feature_config_value_store(struct device *device,
1816 struct device_attribute *attr,
1817 const char *buf, size_t count)
1821 struct zynqmp_devinfo *devinfo = dev_get_drvdata(device);
1826 ret = kstrtou32(buf, 10, &value);
1830 ret = zynqmp_pm_set_feature_config(devinfo->feature_conf_id,
1838 static DEVICE_ATTR_RW(feature_config_value);
1840 static struct attribute *zynqmp_firmware_attrs[] = {
1841 &dev_attr_ggs0.attr,
1842 &dev_attr_ggs1.attr,
1843 &dev_attr_ggs2.attr,
1844 &dev_attr_ggs3.attr,
1845 &dev_attr_pggs0.attr,
1846 &dev_attr_pggs1.attr,
1847 &dev_attr_pggs2.attr,
1848 &dev_attr_pggs3.attr,
1849 &dev_attr_shutdown_scope.attr,
1850 &dev_attr_health_status.attr,
1851 &dev_attr_feature_config_id.attr,
1852 &dev_attr_feature_config_value.attr,
1856 ATTRIBUTE_GROUPS(zynqmp_firmware);
1858 static int zynqmp_firmware_probe(struct platform_device *pdev)
1860 struct device *dev = &pdev->dev;
1861 struct zynqmp_devinfo *devinfo;
1864 ret = get_set_conduit_method(dev->of_node);
1868 ret = do_feature_check_call(PM_FEATURE_CHECK);
1869 if (ret >= 0 && ((ret & FIRMWARE_VERSION_MASK) >= PM_API_VERSION_1))
1870 feature_check_enabled = true;
1872 devinfo = devm_kzalloc(dev, sizeof(*devinfo), GFP_KERNEL);
1878 platform_set_drvdata(pdev, devinfo);
1880 /* Check PM API version number */
1881 ret = zynqmp_pm_get_api_version(&pm_api_version);
1885 if (pm_api_version < ZYNQMP_PM_VERSION) {
1886 panic("%s Platform Management API version error. Expected: v%d.%d - Found: v%d.%d\n",
1888 ZYNQMP_PM_VERSION_MAJOR, ZYNQMP_PM_VERSION_MINOR,
1889 pm_api_version >> 16, pm_api_version & 0xFFFF);
1892 pr_info("%s Platform Management API v%d.%d\n", __func__,
1893 pm_api_version >> 16, pm_api_version & 0xFFFF);
1895 /* Get the Family code and sub family code of platform */
1896 ret = zynqmp_pm_get_family_info(&pm_family_code, &pm_sub_family_code);
1900 /* Check trustzone version number */
1901 ret = zynqmp_pm_get_trustzone_version(&pm_tz_version);
1903 panic("Legacy trustzone found without version support\n");
1905 if (pm_tz_version < ZYNQMP_TZ_VERSION)
1906 panic("%s Trustzone version error. Expected: v%d.%d - Found: v%d.%d\n",
1908 ZYNQMP_TZ_VERSION_MAJOR, ZYNQMP_TZ_VERSION_MINOR,
1909 pm_tz_version >> 16, pm_tz_version & 0xFFFF);
1911 pr_info("%s Trustzone version v%d.%d\n", __func__,
1912 pm_tz_version >> 16, pm_tz_version & 0xFFFF);
1914 ret = mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE, firmware_devs,
1915 ARRAY_SIZE(firmware_devs), NULL, 0, NULL);
1917 dev_err(&pdev->dev, "failed to add MFD devices %d\n", ret);
1921 zynqmp_pm_api_debugfs_init();
1923 if (pm_family_code == VERSAL_FAMILY_CODE) {
1924 em_dev = platform_device_register_data(&pdev->dev, "xlnx_event_manager",
1927 dev_err_probe(&pdev->dev, PTR_ERR(em_dev), "EM register fail with error\n");
1930 return of_platform_populate(dev->of_node, NULL, NULL, dev);
1933 static void zynqmp_firmware_remove(struct platform_device *pdev)
1935 struct pm_api_feature_data *feature_data;
1936 struct hlist_node *tmp;
1939 mfd_remove_devices(&pdev->dev);
1940 zynqmp_pm_api_debugfs_exit();
1942 hash_for_each_safe(pm_api_features_map, i, tmp, feature_data, hentry) {
1943 hash_del(&feature_data->hentry);
1944 kfree(feature_data);
1947 platform_device_unregister(em_dev);
1950 static const struct of_device_id zynqmp_firmware_of_match[] = {
1951 {.compatible = "xlnx,zynqmp-firmware"},
1952 {.compatible = "xlnx,versal-firmware"},
1955 MODULE_DEVICE_TABLE(of, zynqmp_firmware_of_match);
1957 static struct platform_driver zynqmp_firmware_driver = {
1959 .name = "zynqmp_firmware",
1960 .of_match_table = zynqmp_firmware_of_match,
1961 .dev_groups = zynqmp_firmware_groups,
1963 .probe = zynqmp_firmware_probe,
1964 .remove_new = zynqmp_firmware_remove,
1966 module_platform_driver(zynqmp_firmware_driver);