Tejas Patel | 354fe57 | 2018-12-14 00:55:37 -0800 | [diff] [blame] | 1 | /* |
Tanmay Shah | b145e12 | 2022-03-23 12:43:45 -0700 | [diff] [blame] | 2 | * Copyright (c) 2019-2022, Xilinx, Inc. All rights reserved. |
Jay Buddhabhatti | 6a44ad0 | 2023-02-28 01:23:04 -0800 | [diff] [blame] | 3 | * Copyright (c) 2022-2023, Advanced Micro Devices, Inc. All rights reserved. |
Tejas Patel | 354fe57 | 2018-12-14 00:55:37 -0800 | [diff] [blame] | 4 | * |
| 5 | * SPDX-License-Identifier: BSD-3-Clause |
| 6 | */ |
| 7 | |
| 8 | /* |
| 9 | * APU specific definition of processors in the subsystem as well as functions |
| 10 | * for getting information about and changing state of the APU. |
| 11 | */ |
| 12 | |
Tejas Patel | fcb7c16 | 2019-02-27 18:44:56 +0530 | [diff] [blame] | 13 | #include <assert.h> |
Tejas Patel | 354fe57 | 2018-12-14 00:55:37 -0800 | [diff] [blame] | 14 | #include <plat_ipi.h> |
| 15 | #include <platform_def.h> |
| 16 | #include <versal_def.h> |
| 17 | #include <lib/bakery_lock.h> |
Tejas Patel | fe0e10a | 2019-12-08 23:29:44 -0800 | [diff] [blame] | 18 | #include <lib/mmio.h> |
Tejas Patel | fcb7c16 | 2019-02-27 18:44:56 +0530 | [diff] [blame] | 19 | #include <lib/utils.h> |
Tejas Patel | fe0e10a | 2019-12-08 23:29:44 -0800 | [diff] [blame] | 20 | #include <drivers/arm/gicv3.h> |
Tejas Patel | fcb7c16 | 2019-02-27 18:44:56 +0530 | [diff] [blame] | 21 | #include <drivers/arm/gic_common.h> |
Tejas Patel | fe0e10a | 2019-12-08 23:29:44 -0800 | [diff] [blame] | 22 | #include <plat/common/platform.h> |
Tejas Patel | fcb7c16 | 2019-02-27 18:44:56 +0530 | [diff] [blame] | 23 | #include "pm_api_sys.h" |
Tejas Patel | 354fe57 | 2018-12-14 00:55:37 -0800 | [diff] [blame] | 24 | #include "pm_client.h" |
Tanmay Shah | b145e12 | 2022-03-23 12:43:45 -0700 | [diff] [blame] | 25 | #include "pm_defs.h" |
Tejas Patel | 354fe57 | 2018-12-14 00:55:37 -0800 | [diff] [blame] | 26 | |
Tejas Patel | 7029dd8 | 2019-02-27 18:44:54 +0530 | [diff] [blame] | 27 | #define UNDEFINED_CPUID (~0) |
| 28 | |
Tejas Patel | 354fe57 | 2018-12-14 00:55:37 -0800 | [diff] [blame] | 29 | DEFINE_BAKERY_LOCK(pm_client_secure_lock); |
| 30 | |
| 31 | static const struct pm_ipi apu_ipi = { |
| 32 | .local_ipi_id = IPI_ID_APU, |
| 33 | .remote_ipi_id = IPI_ID_PMC, |
| 34 | .buffer_base = IPI_BUFFER_APU_BASE, |
| 35 | }; |
| 36 | |
| 37 | /* Order in pm_procs_all array must match cpu ids */ |
| 38 | static const struct pm_proc pm_procs_all[] = { |
| 39 | { |
| 40 | .node_id = XPM_DEVID_ACPU_0, |
| 41 | .ipi = &apu_ipi, |
Tejas Patel | fe0e10a | 2019-12-08 23:29:44 -0800 | [diff] [blame] | 42 | .pwrdn_mask = APU_0_PWRCTL_CPUPWRDWNREQ_MASK, |
Tejas Patel | 354fe57 | 2018-12-14 00:55:37 -0800 | [diff] [blame] | 43 | }, |
| 44 | { |
| 45 | .node_id = XPM_DEVID_ACPU_1, |
| 46 | .ipi = &apu_ipi, |
Tejas Patel | fe0e10a | 2019-12-08 23:29:44 -0800 | [diff] [blame] | 47 | .pwrdn_mask = APU_1_PWRCTL_CPUPWRDWNREQ_MASK, |
Tejas Patel | 354fe57 | 2018-12-14 00:55:37 -0800 | [diff] [blame] | 48 | } |
| 49 | }; |
| 50 | |
| 51 | const struct pm_proc *primary_proc = &pm_procs_all[0]; |
Tejas Patel | fe0e10a | 2019-12-08 23:29:44 -0800 | [diff] [blame] | 52 | |
Tejas Patel | fcb7c16 | 2019-02-27 18:44:56 +0530 | [diff] [blame] | 53 | /* Interrupt to PM node index map */ |
| 54 | static enum pm_device_node_idx irq_node_map[IRQ_MAX + 1] = { |
| 55 | [13] = XPM_NODEIDX_DEV_GPIO, |
| 56 | [14] = XPM_NODEIDX_DEV_I2C_0, |
| 57 | [15] = XPM_NODEIDX_DEV_I2C_1, |
| 58 | [16] = XPM_NODEIDX_DEV_SPI_0, |
| 59 | [17] = XPM_NODEIDX_DEV_SPI_1, |
| 60 | [18] = XPM_NODEIDX_DEV_UART_0, |
| 61 | [19] = XPM_NODEIDX_DEV_UART_1, |
| 62 | [20] = XPM_NODEIDX_DEV_CAN_FD_0, |
| 63 | [21] = XPM_NODEIDX_DEV_CAN_FD_1, |
| 64 | [22] = XPM_NODEIDX_DEV_USB_0, |
| 65 | [23] = XPM_NODEIDX_DEV_USB_0, |
| 66 | [24] = XPM_NODEIDX_DEV_USB_0, |
| 67 | [25] = XPM_NODEIDX_DEV_USB_0, |
| 68 | [26] = XPM_NODEIDX_DEV_USB_0, |
| 69 | [37] = XPM_NODEIDX_DEV_TTC_0, |
| 70 | [38] = XPM_NODEIDX_DEV_TTC_0, |
| 71 | [39] = XPM_NODEIDX_DEV_TTC_0, |
| 72 | [40] = XPM_NODEIDX_DEV_TTC_1, |
| 73 | [41] = XPM_NODEIDX_DEV_TTC_1, |
| 74 | [42] = XPM_NODEIDX_DEV_TTC_1, |
| 75 | [43] = XPM_NODEIDX_DEV_TTC_2, |
| 76 | [44] = XPM_NODEIDX_DEV_TTC_2, |
| 77 | [45] = XPM_NODEIDX_DEV_TTC_2, |
| 78 | [46] = XPM_NODEIDX_DEV_TTC_3, |
| 79 | [47] = XPM_NODEIDX_DEV_TTC_3, |
| 80 | [48] = XPM_NODEIDX_DEV_TTC_3, |
| 81 | [56] = XPM_NODEIDX_DEV_GEM_0, |
| 82 | [57] = XPM_NODEIDX_DEV_GEM_0, |
| 83 | [58] = XPM_NODEIDX_DEV_GEM_1, |
| 84 | [59] = XPM_NODEIDX_DEV_GEM_1, |
| 85 | [60] = XPM_NODEIDX_DEV_ADMA_0, |
| 86 | [61] = XPM_NODEIDX_DEV_ADMA_1, |
| 87 | [62] = XPM_NODEIDX_DEV_ADMA_2, |
| 88 | [63] = XPM_NODEIDX_DEV_ADMA_3, |
| 89 | [64] = XPM_NODEIDX_DEV_ADMA_4, |
| 90 | [65] = XPM_NODEIDX_DEV_ADMA_5, |
| 91 | [66] = XPM_NODEIDX_DEV_ADMA_6, |
| 92 | [67] = XPM_NODEIDX_DEV_ADMA_7, |
| 93 | [74] = XPM_NODEIDX_DEV_USB_0, |
| 94 | [126] = XPM_NODEIDX_DEV_SDIO_0, |
| 95 | [127] = XPM_NODEIDX_DEV_SDIO_0, |
| 96 | [128] = XPM_NODEIDX_DEV_SDIO_1, |
| 97 | [129] = XPM_NODEIDX_DEV_SDIO_1, |
| 98 | [142] = XPM_NODEIDX_DEV_RTC, |
| 99 | }; |
| 100 | |
| 101 | /** |
| 102 | * irq_to_pm_node_idx - Get PM node index corresponding to the interrupt number |
| 103 | * @irq: Interrupt number |
| 104 | * |
| 105 | * Return: PM node index corresponding to the specified interrupt |
| 106 | */ |
Jay Buddhabhatti | a63b354 | 2023-02-28 02:22:02 -0800 | [diff] [blame] | 107 | enum pm_device_node_idx irq_to_pm_node_idx(uint32_t irq) |
Tejas Patel | fcb7c16 | 2019-02-27 18:44:56 +0530 | [diff] [blame] | 108 | { |
| 109 | assert(irq <= IRQ_MAX); |
| 110 | return irq_node_map[irq]; |
| 111 | } |
| 112 | |
| 113 | /** |
Tejas Patel | fe0e10a | 2019-12-08 23:29:44 -0800 | [diff] [blame] | 114 | * pm_client_suspend() - Client-specific suspend actions |
| 115 | * |
| 116 | * This function should contain any PU-specific actions |
| 117 | * required prior to sending suspend request to PMU |
| 118 | * Actions taken depend on the state system is suspending to. |
| 119 | */ |
Venkatesh Yadav Abbarapu | bde8759 | 2022-05-24 11:11:12 +0530 | [diff] [blame] | 120 | void pm_client_suspend(const struct pm_proc *proc, uint32_t state) |
Tejas Patel | fe0e10a | 2019-12-08 23:29:44 -0800 | [diff] [blame] | 121 | { |
| 122 | bakery_lock_get(&pm_client_secure_lock); |
| 123 | |
Abhyuday Godhasara | ddc4662 | 2021-08-05 03:14:17 -0700 | [diff] [blame] | 124 | if (state == PM_STATE_SUSPEND_TO_RAM) { |
Abhyuday Godhasara | edc38ae | 2021-08-04 23:58:46 -0700 | [diff] [blame] | 125 | pm_client_set_wakeup_sources((uint32_t)proc->node_id); |
Abhyuday Godhasara | ddc4662 | 2021-08-05 03:14:17 -0700 | [diff] [blame] | 126 | } |
Tejas Patel | fcb7c16 | 2019-02-27 18:44:56 +0530 | [diff] [blame] | 127 | |
Tejas Patel | fe0e10a | 2019-12-08 23:29:44 -0800 | [diff] [blame] | 128 | /* Set powerdown request */ |
| 129 | mmio_write_32(FPD_APU_PWRCTL, mmio_read_32(FPD_APU_PWRCTL) | |
Abhyuday Godhasara | 4487794 | 2021-08-05 02:59:26 -0700 | [diff] [blame] | 130 | (uint32_t)proc->pwrdn_mask); |
Tejas Patel | fe0e10a | 2019-12-08 23:29:44 -0800 | [diff] [blame] | 131 | |
| 132 | bakery_lock_release(&pm_client_secure_lock); |
| 133 | } |
| 134 | |
| 135 | /** |
| 136 | * pm_client_abort_suspend() - Client-specific abort-suspend actions |
| 137 | * |
| 138 | * This function should contain any PU-specific actions |
| 139 | * required for aborting a prior suspend request |
| 140 | */ |
| 141 | void pm_client_abort_suspend(void) |
| 142 | { |
| 143 | /* Enable interrupts at processor level (for current cpu) */ |
| 144 | gicv3_cpuif_enable(plat_my_core_pos()); |
| 145 | |
| 146 | bakery_lock_get(&pm_client_secure_lock); |
| 147 | |
| 148 | /* Clear powerdown request */ |
| 149 | mmio_write_32(FPD_APU_PWRCTL, mmio_read_32(FPD_APU_PWRCTL) & |
Abhyuday Godhasara | 4487794 | 2021-08-05 02:59:26 -0700 | [diff] [blame] | 150 | ~((uint32_t)primary_proc->pwrdn_mask)); |
Tejas Patel | fe0e10a | 2019-12-08 23:29:44 -0800 | [diff] [blame] | 151 | |
| 152 | bakery_lock_release(&pm_client_secure_lock); |
| 153 | } |
| 154 | |
| 155 | /** |
Tejas Patel | 7029dd8 | 2019-02-27 18:44:54 +0530 | [diff] [blame] | 156 | * pm_get_cpuid() - get the local cpu ID for a global node ID |
| 157 | * @nid: node id of the processor |
| 158 | * |
| 159 | * Return: the cpu ID (starting from 0) for the subsystem |
| 160 | */ |
Venkatesh Yadav Abbarapu | bde8759 | 2022-05-24 11:11:12 +0530 | [diff] [blame] | 161 | static uint32_t pm_get_cpuid(uint32_t nid) |
Tejas Patel | 7029dd8 | 2019-02-27 18:44:54 +0530 | [diff] [blame] | 162 | { |
Abhyuday Godhasara | edc38ae | 2021-08-04 23:58:46 -0700 | [diff] [blame] | 163 | for (size_t i = 0U; i < ARRAY_SIZE(pm_procs_all); i++) { |
Abhyuday Godhasara | ddc4662 | 2021-08-05 03:14:17 -0700 | [diff] [blame] | 164 | if (pm_procs_all[i].node_id == nid) { |
Tejas Patel | 7029dd8 | 2019-02-27 18:44:54 +0530 | [diff] [blame] | 165 | return i; |
Abhyuday Godhasara | ddc4662 | 2021-08-05 03:14:17 -0700 | [diff] [blame] | 166 | } |
Tejas Patel | 7029dd8 | 2019-02-27 18:44:54 +0530 | [diff] [blame] | 167 | } |
| 168 | return UNDEFINED_CPUID; |
| 169 | } |
| 170 | |
| 171 | /** |
| 172 | * pm_client_wakeup() - Client-specific wakeup actions |
| 173 | * |
| 174 | * This function should contain any PU-specific actions |
| 175 | * required for waking up another APU core |
| 176 | */ |
| 177 | void pm_client_wakeup(const struct pm_proc *proc) |
| 178 | { |
Venkatesh Yadav Abbarapu | bde8759 | 2022-05-24 11:11:12 +0530 | [diff] [blame] | 179 | uint32_t cpuid = pm_get_cpuid(proc->node_id); |
Tejas Patel | 7029dd8 | 2019-02-27 18:44:54 +0530 | [diff] [blame] | 180 | |
Abhyuday Godhasara | ddc4662 | 2021-08-05 03:14:17 -0700 | [diff] [blame] | 181 | if (cpuid == UNDEFINED_CPUID) { |
Tejas Patel | 7029dd8 | 2019-02-27 18:44:54 +0530 | [diff] [blame] | 182 | return; |
Abhyuday Godhasara | ddc4662 | 2021-08-05 03:14:17 -0700 | [diff] [blame] | 183 | } |
Tejas Patel | 7029dd8 | 2019-02-27 18:44:54 +0530 | [diff] [blame] | 184 | |
| 185 | bakery_lock_get(&pm_client_secure_lock); |
| 186 | |
| 187 | /* clear powerdown bit for affected cpu */ |
| 188 | uint32_t val = mmio_read_32(FPD_APU_PWRCTL); |
| 189 | val &= ~(proc->pwrdn_mask); |
| 190 | mmio_write_32(FPD_APU_PWRCTL, val); |
| 191 | |
| 192 | bakery_lock_release(&pm_client_secure_lock); |
| 193 | } |
| 194 | |
| 195 | /** |
Tejas Patel | fe0e10a | 2019-12-08 23:29:44 -0800 | [diff] [blame] | 196 | * pm_get_proc() - returns pointer to the proc structure |
| 197 | * @cpuid: id of the cpu whose proc struct pointer should be returned |
| 198 | * |
| 199 | * Return: pointer to a proc structure if proc is found, otherwise NULL |
| 200 | */ |
Venkatesh Yadav Abbarapu | bde8759 | 2022-05-24 11:11:12 +0530 | [diff] [blame] | 201 | const struct pm_proc *pm_get_proc(uint32_t cpuid) |
Tejas Patel | fe0e10a | 2019-12-08 23:29:44 -0800 | [diff] [blame] | 202 | { |
Abhyuday Godhasara | ddc4662 | 2021-08-05 03:14:17 -0700 | [diff] [blame] | 203 | if (cpuid < ARRAY_SIZE(pm_procs_all)) { |
Tejas Patel | fe0e10a | 2019-12-08 23:29:44 -0800 | [diff] [blame] | 204 | return &pm_procs_all[cpuid]; |
Abhyuday Godhasara | ddc4662 | 2021-08-05 03:14:17 -0700 | [diff] [blame] | 205 | } |
Tejas Patel | fe0e10a | 2019-12-08 23:29:44 -0800 | [diff] [blame] | 206 | |
| 207 | return NULL; |
| 208 | } |