1 /* 2 * ASPEED GPIO Controller 3 * 4 * Copyright (C) 2017-2019 IBM Corp. 5 * 6 * SPDX-License-Identifier: GPL-2.0-or-later 7 */ 8 9 #include "qemu/osdep.h" 10 #include "qemu/host-utils.h" 11 #include "qemu/log.h" 12 #include "hw/gpio/aspeed_gpio.h" 13 #include "hw/misc/aspeed_scu.h" 14 #include "qapi/error.h" 15 #include "qapi/visitor.h" 16 #include "hw/irq.h" 17 #include "migration/vmstate.h" 18 #include "trace.h" 19 #include "hw/registerfields.h" 20 21 #define GPIOS_PER_GROUP 8 22 23 /* GPIO Source Types */ 24 #define ASPEED_CMD_SRC_MASK 0x01010101 25 #define ASPEED_SOURCE_ARM 0 26 #define ASPEED_SOURCE_LPC 1 27 #define ASPEED_SOURCE_COPROCESSOR 2 28 #define ASPEED_SOURCE_RESERVED 3 29 30 /* GPIO Interrupt Triggers */ 31 /* 32 * For each set of gpios there are three sensitivity registers that control 33 * the interrupt trigger mode. 34 * 35 * | 2 | 1 | 0 | trigger mode 36 * ----------------------------- 37 * | 0 | 0 | 0 | falling-edge 38 * | 0 | 0 | 1 | rising-edge 39 * | 0 | 1 | 0 | level-low 40 * | 0 | 1 | 1 | level-high 41 * | 1 | X | X | dual-edge 42 */ 43 #define ASPEED_FALLING_EDGE 0 44 #define ASPEED_RISING_EDGE 1 45 #define ASPEED_LEVEL_LOW 2 46 #define ASPEED_LEVEL_HIGH 3 47 #define ASPEED_DUAL_EDGE 4 48 49 /* GPIO Register Address Offsets */ 50 #define GPIO_ABCD_DATA_VALUE (0x000 >> 2) 51 #define GPIO_ABCD_DIRECTION (0x004 >> 2) 52 #define GPIO_ABCD_INT_ENABLE (0x008 >> 2) 53 #define GPIO_ABCD_INT_SENS_0 (0x00C >> 2) 54 #define GPIO_ABCD_INT_SENS_1 (0x010 >> 2) 55 #define GPIO_ABCD_INT_SENS_2 (0x014 >> 2) 56 #define GPIO_ABCD_INT_STATUS (0x018 >> 2) 57 #define GPIO_ABCD_RESET_TOLERANT (0x01C >> 2) 58 #define GPIO_EFGH_DATA_VALUE (0x020 >> 2) 59 #define GPIO_EFGH_DIRECTION (0x024 >> 2) 60 #define GPIO_EFGH_INT_ENABLE (0x028 >> 2) 61 #define GPIO_EFGH_INT_SENS_0 (0x02C >> 2) 62 #define GPIO_EFGH_INT_SENS_1 (0x030 >> 2) 63 #define GPIO_EFGH_INT_SENS_2 (0x034 >> 2) 64 #define GPIO_EFGH_INT_STATUS (0x038 >> 2) 65 #define GPIO_EFGH_RESET_TOLERANT (0x03C >> 2) 66 #define GPIO_ABCD_DEBOUNCE_1 (0x040 >> 2) 67 #define GPIO_ABCD_DEBOUNCE_2 (0x044 >> 2) 68 #define GPIO_EFGH_DEBOUNCE_1 (0x048 >> 2) 69 #define GPIO_EFGH_DEBOUNCE_2 (0x04C >> 2) 70 #define GPIO_DEBOUNCE_TIME_1 (0x050 >> 2) 71 #define GPIO_DEBOUNCE_TIME_2 (0x054 >> 2) 72 #define GPIO_DEBOUNCE_TIME_3 (0x058 >> 2) 73 #define GPIO_ABCD_COMMAND_SRC_0 (0x060 >> 2) 74 #define GPIO_ABCD_COMMAND_SRC_1 (0x064 >> 2) 75 #define GPIO_EFGH_COMMAND_SRC_0 (0x068 >> 2) 76 #define GPIO_EFGH_COMMAND_SRC_1 (0x06C >> 2) 77 #define GPIO_IJKL_DATA_VALUE (0x070 >> 2) 78 #define GPIO_IJKL_DIRECTION (0x074 >> 2) 79 #define GPIO_MNOP_DATA_VALUE (0x078 >> 2) 80 #define GPIO_MNOP_DIRECTION (0x07C >> 2) 81 #define GPIO_QRST_DATA_VALUE (0x080 >> 2) 82 #define GPIO_QRST_DIRECTION (0x084 >> 2) 83 #define GPIO_UVWX_DATA_VALUE (0x088 >> 2) 84 #define GPIO_UVWX_DIRECTION (0x08C >> 2) 85 #define GPIO_IJKL_COMMAND_SRC_0 (0x090 >> 2) 86 #define GPIO_IJKL_COMMAND_SRC_1 (0x094 >> 2) 87 #define GPIO_IJKL_INT_ENABLE (0x098 >> 2) 88 #define GPIO_IJKL_INT_SENS_0 (0x09C >> 2) 89 #define GPIO_IJKL_INT_SENS_1 (0x0A0 >> 2) 90 #define GPIO_IJKL_INT_SENS_2 (0x0A4 >> 2) 91 #define GPIO_IJKL_INT_STATUS (0x0A8 >> 2) 92 #define GPIO_IJKL_RESET_TOLERANT (0x0AC >> 2) 93 #define GPIO_IJKL_DEBOUNCE_1 (0x0B0 >> 2) 94 #define GPIO_IJKL_DEBOUNCE_2 (0x0B4 >> 2) 95 #define GPIO_IJKL_INPUT_MASK (0x0B8 >> 2) 96 #define GPIO_ABCD_DATA_READ (0x0C0 >> 2) 97 #define GPIO_EFGH_DATA_READ (0x0C4 >> 2) 98 #define GPIO_IJKL_DATA_READ (0x0C8 >> 2) 99 #define GPIO_MNOP_DATA_READ (0x0CC >> 2) 100 #define GPIO_QRST_DATA_READ (0x0D0 >> 2) 101 #define GPIO_UVWX_DATA_READ (0x0D4 >> 2) 102 #define GPIO_YZAAAB_DATA_READ (0x0D8 >> 2) 103 #define GPIO_AC_DATA_READ (0x0DC >> 2) 104 #define GPIO_MNOP_COMMAND_SRC_0 (0x0E0 >> 2) 105 #define GPIO_MNOP_COMMAND_SRC_1 (0x0E4 >> 2) 106 #define GPIO_MNOP_INT_ENABLE (0x0E8 >> 2) 107 #define GPIO_MNOP_INT_SENS_0 (0x0EC >> 2) 108 #define GPIO_MNOP_INT_SENS_1 (0x0F0 >> 2) 109 #define GPIO_MNOP_INT_SENS_2 (0x0F4 >> 2) 110 #define GPIO_MNOP_INT_STATUS (0x0F8 >> 2) 111 #define GPIO_MNOP_RESET_TOLERANT (0x0FC >> 2) 112 #define GPIO_MNOP_DEBOUNCE_1 (0x100 >> 2) 113 #define GPIO_MNOP_DEBOUNCE_2 (0x104 >> 2) 114 #define GPIO_MNOP_INPUT_MASK (0x108 >> 2) 115 #define GPIO_QRST_COMMAND_SRC_0 (0x110 >> 2) 116 #define GPIO_QRST_COMMAND_SRC_1 (0x114 >> 2) 117 #define GPIO_QRST_INT_ENABLE (0x118 >> 2) 118 #define GPIO_QRST_INT_SENS_0 (0x11C >> 2) 119 #define GPIO_QRST_INT_SENS_1 (0x120 >> 2) 120 #define GPIO_QRST_INT_SENS_2 (0x124 >> 2) 121 #define GPIO_QRST_INT_STATUS (0x128 >> 2) 122 #define GPIO_QRST_RESET_TOLERANT (0x12C >> 2) 123 #define GPIO_QRST_DEBOUNCE_1 (0x130 >> 2) 124 #define GPIO_QRST_DEBOUNCE_2 (0x134 >> 2) 125 #define GPIO_QRST_INPUT_MASK (0x138 >> 2) 126 #define GPIO_UVWX_COMMAND_SRC_0 (0x140 >> 2) 127 #define GPIO_UVWX_COMMAND_SRC_1 (0x144 >> 2) 128 #define GPIO_UVWX_INT_ENABLE (0x148 >> 2) 129 #define GPIO_UVWX_INT_SENS_0 (0x14C >> 2) 130 #define GPIO_UVWX_INT_SENS_1 (0x150 >> 2) 131 #define GPIO_UVWX_INT_SENS_2 (0x154 >> 2) 132 #define GPIO_UVWX_INT_STATUS (0x158 >> 2) 133 #define GPIO_UVWX_RESET_TOLERANT (0x15C >> 2) 134 #define GPIO_UVWX_DEBOUNCE_1 (0x160 >> 2) 135 #define GPIO_UVWX_DEBOUNCE_2 (0x164 >> 2) 136 #define GPIO_UVWX_INPUT_MASK (0x168 >> 2) 137 #define GPIO_YZAAAB_COMMAND_SRC_0 (0x170 >> 2) 138 #define GPIO_YZAAAB_COMMAND_SRC_1 (0x174 >> 2) 139 #define GPIO_YZAAAB_INT_ENABLE (0x178 >> 2) 140 #define GPIO_YZAAAB_INT_SENS_0 (0x17C >> 2) 141 #define GPIO_YZAAAB_INT_SENS_1 (0x180 >> 2) 142 #define GPIO_YZAAAB_INT_SENS_2 (0x184 >> 2) 143 #define GPIO_YZAAAB_INT_STATUS (0x188 >> 2) 144 #define GPIO_YZAAAB_RESET_TOLERANT (0x18C >> 2) 145 #define GPIO_YZAAAB_DEBOUNCE_1 (0x190 >> 2) 146 #define GPIO_YZAAAB_DEBOUNCE_2 (0x194 >> 2) 147 #define GPIO_YZAAAB_INPUT_MASK (0x198 >> 2) 148 #define GPIO_AC_COMMAND_SRC_0 (0x1A0 >> 2) 149 #define GPIO_AC_COMMAND_SRC_1 (0x1A4 >> 2) 150 #define GPIO_AC_INT_ENABLE (0x1A8 >> 2) 151 #define GPIO_AC_INT_SENS_0 (0x1AC >> 2) 152 #define GPIO_AC_INT_SENS_1 (0x1B0 >> 2) 153 #define GPIO_AC_INT_SENS_2 (0x1B4 >> 2) 154 #define GPIO_AC_INT_STATUS (0x1B8 >> 2) 155 #define GPIO_AC_RESET_TOLERANT (0x1BC >> 2) 156 #define GPIO_AC_DEBOUNCE_1 (0x1C0 >> 2) 157 #define GPIO_AC_DEBOUNCE_2 (0x1C4 >> 2) 158 #define GPIO_AC_INPUT_MASK (0x1C8 >> 2) 159 #define GPIO_ABCD_INPUT_MASK (0x1D0 >> 2) 160 #define GPIO_EFGH_INPUT_MASK (0x1D4 >> 2) 161 #define GPIO_YZAAAB_DATA_VALUE (0x1E0 >> 2) 162 #define GPIO_YZAAAB_DIRECTION (0x1E4 >> 2) 163 #define GPIO_AC_DATA_VALUE (0x1E8 >> 2) 164 #define GPIO_AC_DIRECTION (0x1EC >> 2) 165 #define GPIO_3_3V_MEM_SIZE 0x1F0 166 #define GPIO_3_3V_REG_ARRAY_SIZE (GPIO_3_3V_MEM_SIZE >> 2) 167 168 /* AST2600 only - 1.8V gpios */ 169 /* 170 * The AST2600 two copies of the GPIO controller: the same 3.3V gpios as the 171 * AST2400 (memory offsets 0x0-0x198) and a second controller with 1.8V gpios 172 * (memory offsets 0x800-0x9D4). 173 */ 174 #define GPIO_1_8V_ABCD_DATA_VALUE (0x000 >> 2) 175 #define GPIO_1_8V_ABCD_DIRECTION (0x004 >> 2) 176 #define GPIO_1_8V_ABCD_INT_ENABLE (0x008 >> 2) 177 #define GPIO_1_8V_ABCD_INT_SENS_0 (0x00C >> 2) 178 #define GPIO_1_8V_ABCD_INT_SENS_1 (0x010 >> 2) 179 #define GPIO_1_8V_ABCD_INT_SENS_2 (0x014 >> 2) 180 #define GPIO_1_8V_ABCD_INT_STATUS (0x018 >> 2) 181 #define GPIO_1_8V_ABCD_RESET_TOLERANT (0x01C >> 2) 182 #define GPIO_1_8V_E_DATA_VALUE (0x020 >> 2) 183 #define GPIO_1_8V_E_DIRECTION (0x024 >> 2) 184 #define GPIO_1_8V_E_INT_ENABLE (0x028 >> 2) 185 #define GPIO_1_8V_E_INT_SENS_0 (0x02C >> 2) 186 #define GPIO_1_8V_E_INT_SENS_1 (0x030 >> 2) 187 #define GPIO_1_8V_E_INT_SENS_2 (0x034 >> 2) 188 #define GPIO_1_8V_E_INT_STATUS (0x038 >> 2) 189 #define GPIO_1_8V_E_RESET_TOLERANT (0x03C >> 2) 190 #define GPIO_1_8V_ABCD_DEBOUNCE_1 (0x040 >> 2) 191 #define GPIO_1_8V_ABCD_DEBOUNCE_2 (0x044 >> 2) 192 #define GPIO_1_8V_E_DEBOUNCE_1 (0x048 >> 2) 193 #define GPIO_1_8V_E_DEBOUNCE_2 (0x04C >> 2) 194 #define GPIO_1_8V_DEBOUNCE_TIME_1 (0x050 >> 2) 195 #define GPIO_1_8V_DEBOUNCE_TIME_2 (0x054 >> 2) 196 #define GPIO_1_8V_DEBOUNCE_TIME_3 (0x058 >> 2) 197 #define GPIO_1_8V_ABCD_COMMAND_SRC_0 (0x060 >> 2) 198 #define GPIO_1_8V_ABCD_COMMAND_SRC_1 (0x064 >> 2) 199 #define GPIO_1_8V_E_COMMAND_SRC_0 (0x068 >> 2) 200 #define GPIO_1_8V_E_COMMAND_SRC_1 (0x06C >> 2) 201 #define GPIO_1_8V_ABCD_DATA_READ (0x0C0 >> 2) 202 #define GPIO_1_8V_E_DATA_READ (0x0C4 >> 2) 203 #define GPIO_1_8V_ABCD_INPUT_MASK (0x1D0 >> 2) 204 #define GPIO_1_8V_E_INPUT_MASK (0x1D4 >> 2) 205 #define GPIO_1_8V_MEM_SIZE 0x1D8 206 #define GPIO_1_8V_REG_ARRAY_SIZE (GPIO_1_8V_MEM_SIZE >> 2) 207 208 /* 209 * GPIO index mode support 210 * It only supports write operation 211 */ 212 REG32(GPIO_INDEX_REG, 0x2AC) 213 FIELD(GPIO_INDEX_REG, NUMBER, 0, 8) 214 FIELD(GPIO_INDEX_REG, COMMAND, 12, 1) 215 FIELD(GPIO_INDEX_REG, TYPE, 16, 4) 216 FIELD(GPIO_INDEX_REG, DATA_VALUE, 20, 1) 217 FIELD(GPIO_INDEX_REG, DIRECTION, 20, 1) 218 FIELD(GPIO_INDEX_REG, INT_ENABLE, 20, 1) 219 FIELD(GPIO_INDEX_REG, INT_SENS_0, 21, 1) 220 FIELD(GPIO_INDEX_REG, INT_SENS_1, 22, 1) 221 FIELD(GPIO_INDEX_REG, INT_SENS_2, 23, 1) 222 FIELD(GPIO_INDEX_REG, INT_STATUS, 24, 1) 223 FIELD(GPIO_INDEX_REG, DEBOUNCE_1, 20, 1) 224 FIELD(GPIO_INDEX_REG, DEBOUNCE_2, 21, 1) 225 FIELD(GPIO_INDEX_REG, RESET_TOLERANT, 20, 1) 226 FIELD(GPIO_INDEX_REG, COMMAND_SRC_0, 20, 1) 227 FIELD(GPIO_INDEX_REG, COMMAND_SRC_1, 21, 1) 228 FIELD(GPIO_INDEX_REG, INPUT_MASK, 20, 1) 229 230 static int aspeed_evaluate_irq(GPIOSets *regs, int gpio_prev_high, int gpio) 231 { 232 uint32_t falling_edge = 0, rising_edge = 0; 233 uint32_t int_trigger = extract32(regs->int_sens_0, gpio, 1) 234 | extract32(regs->int_sens_1, gpio, 1) << 1 235 | extract32(regs->int_sens_2, gpio, 1) << 2; 236 uint32_t gpio_curr_high = extract32(regs->data_value, gpio, 1); 237 uint32_t gpio_int_enabled = extract32(regs->int_enable, gpio, 1); 238 239 if (!gpio_int_enabled) { 240 return 0; 241 } 242 243 /* Detect edges */ 244 if (gpio_curr_high && !gpio_prev_high) { 245 rising_edge = 1; 246 } else if (!gpio_curr_high && gpio_prev_high) { 247 falling_edge = 1; 248 } 249 250 if (((int_trigger == ASPEED_FALLING_EDGE) && falling_edge) || 251 ((int_trigger == ASPEED_RISING_EDGE) && rising_edge) || 252 ((int_trigger == ASPEED_LEVEL_LOW) && !gpio_curr_high) || 253 ((int_trigger == ASPEED_LEVEL_HIGH) && gpio_curr_high) || 254 ((int_trigger >= ASPEED_DUAL_EDGE) && (rising_edge || falling_edge))) 255 { 256 regs->int_status = deposit32(regs->int_status, gpio, 1, 1); 257 return 1; 258 } 259 return 0; 260 } 261 262 #define nested_struct_index(ta, pa, m, tb, pb) \ 263 (pb - ((tb *)(((char *)pa) + offsetof(ta, m)))) 264 265 static ptrdiff_t aspeed_gpio_set_idx(AspeedGPIOState *s, GPIOSets *regs) 266 { 267 return nested_struct_index(AspeedGPIOState, s, sets, GPIOSets, regs); 268 } 269 270 static void aspeed_gpio_update(AspeedGPIOState *s, GPIOSets *regs, 271 uint32_t value, uint32_t mode_mask) 272 { 273 uint32_t input_mask = regs->input_mask; 274 uint32_t direction = regs->direction; 275 uint32_t old = regs->data_value; 276 uint32_t new = value; 277 uint32_t diff; 278 int gpio; 279 280 diff = (old ^ new); 281 diff &= mode_mask; 282 if (diff) { 283 for (gpio = 0; gpio < ASPEED_GPIOS_PER_SET; gpio++) { 284 uint32_t mask = 1U << gpio; 285 286 /* If the gpio needs to be updated... */ 287 if (!(diff & mask)) { 288 continue; 289 } 290 291 /* ...and we're output or not input-masked... */ 292 if (!(direction & mask) && (input_mask & mask)) { 293 continue; 294 } 295 296 /* ...then update the state. */ 297 if (mask & new) { 298 regs->data_value |= mask; 299 } else { 300 regs->data_value &= ~mask; 301 } 302 303 /* If the gpio is set to output... */ 304 if (direction & mask) { 305 /* ...trigger the line-state IRQ */ 306 ptrdiff_t set = aspeed_gpio_set_idx(s, regs); 307 qemu_set_irq(s->gpios[set][gpio], !!(new & mask)); 308 } else { 309 /* ...otherwise if we meet the line's current IRQ policy... */ 310 if (aspeed_evaluate_irq(regs, old & mask, gpio)) { 311 /* ...trigger the VIC IRQ */ 312 s->pending++; 313 } 314 } 315 } 316 } 317 qemu_set_irq(s->irq, !!(s->pending)); 318 } 319 320 static bool aspeed_gpio_get_pin_level(AspeedGPIOState *s, uint32_t set_idx, 321 uint32_t pin) 322 { 323 uint32_t reg_val; 324 uint32_t pin_mask = 1 << pin; 325 326 reg_val = s->sets[set_idx].data_value; 327 328 return !!(reg_val & pin_mask); 329 } 330 331 static void aspeed_gpio_set_pin_level(AspeedGPIOState *s, uint32_t set_idx, 332 uint32_t pin, bool level) 333 { 334 uint32_t value = s->sets[set_idx].data_value; 335 uint32_t pin_mask = 1 << pin; 336 337 if (level) { 338 value |= pin_mask; 339 } else { 340 value &= ~pin_mask; 341 } 342 343 aspeed_gpio_update(s, &s->sets[set_idx], value, ~s->sets[set_idx].direction); 344 } 345 346 /* 347 * | src_1 | src_2 | source | 348 * |-----------------------------| 349 * | 0 | 0 | ARM | 350 * | 0 | 1 | LPC | 351 * | 1 | 0 | Coprocessor| 352 * | 1 | 1 | Reserved | 353 * 354 * Once the source of a set is programmed, corresponding bits in the 355 * data_value, direction, interrupt [enable, sens[0-2]], reset_tol and 356 * debounce registers can only be written by the source. 357 * 358 * Source is ARM by default 359 * only bits 24, 16, 8, and 0 can be set 360 * 361 * we don't currently have a model for the LPC or Coprocessor 362 */ 363 static uint32_t update_value_control_source(GPIOSets *regs, uint32_t old_value, 364 uint32_t value) 365 { 366 int i; 367 int cmd_source; 368 369 /* assume the source is always ARM for now */ 370 int source = ASPEED_SOURCE_ARM; 371 372 uint32_t new_value = 0; 373 374 /* for each group in set */ 375 for (i = 0; i < ASPEED_GPIOS_PER_SET; i += GPIOS_PER_GROUP) { 376 cmd_source = extract32(regs->cmd_source_0, i, 1) 377 | (extract32(regs->cmd_source_1, i, 1) << 1); 378 379 if (source == cmd_source) { 380 new_value |= (0xff << i) & value; 381 } else { 382 new_value |= (0xff << i) & old_value; 383 } 384 } 385 return new_value; 386 } 387 388 static const AspeedGPIOReg aspeed_3_3v_gpios[GPIO_3_3V_REG_ARRAY_SIZE] = { 389 /* Set ABCD */ 390 [GPIO_ABCD_DATA_VALUE] = { 0, gpio_reg_data_value }, 391 [GPIO_ABCD_DIRECTION] = { 0, gpio_reg_direction }, 392 [GPIO_ABCD_INT_ENABLE] = { 0, gpio_reg_int_enable }, 393 [GPIO_ABCD_INT_SENS_0] = { 0, gpio_reg_int_sens_0 }, 394 [GPIO_ABCD_INT_SENS_1] = { 0, gpio_reg_int_sens_1 }, 395 [GPIO_ABCD_INT_SENS_2] = { 0, gpio_reg_int_sens_2 }, 396 [GPIO_ABCD_INT_STATUS] = { 0, gpio_reg_int_status }, 397 [GPIO_ABCD_RESET_TOLERANT] = { 0, gpio_reg_reset_tolerant }, 398 [GPIO_ABCD_DEBOUNCE_1] = { 0, gpio_reg_debounce_1 }, 399 [GPIO_ABCD_DEBOUNCE_2] = { 0, gpio_reg_debounce_2 }, 400 [GPIO_ABCD_COMMAND_SRC_0] = { 0, gpio_reg_cmd_source_0 }, 401 [GPIO_ABCD_COMMAND_SRC_1] = { 0, gpio_reg_cmd_source_1 }, 402 [GPIO_ABCD_DATA_READ] = { 0, gpio_reg_data_read }, 403 [GPIO_ABCD_INPUT_MASK] = { 0, gpio_reg_input_mask }, 404 /* Set EFGH */ 405 [GPIO_EFGH_DATA_VALUE] = { 1, gpio_reg_data_value }, 406 [GPIO_EFGH_DIRECTION] = { 1, gpio_reg_direction }, 407 [GPIO_EFGH_INT_ENABLE] = { 1, gpio_reg_int_enable }, 408 [GPIO_EFGH_INT_SENS_0] = { 1, gpio_reg_int_sens_0 }, 409 [GPIO_EFGH_INT_SENS_1] = { 1, gpio_reg_int_sens_1 }, 410 [GPIO_EFGH_INT_SENS_2] = { 1, gpio_reg_int_sens_2 }, 411 [GPIO_EFGH_INT_STATUS] = { 1, gpio_reg_int_status }, 412 [GPIO_EFGH_RESET_TOLERANT] = { 1, gpio_reg_reset_tolerant }, 413 [GPIO_EFGH_DEBOUNCE_1] = { 1, gpio_reg_debounce_1 }, 414 [GPIO_EFGH_DEBOUNCE_2] = { 1, gpio_reg_debounce_2 }, 415 [GPIO_EFGH_COMMAND_SRC_0] = { 1, gpio_reg_cmd_source_0 }, 416 [GPIO_EFGH_COMMAND_SRC_1] = { 1, gpio_reg_cmd_source_1 }, 417 [GPIO_EFGH_DATA_READ] = { 1, gpio_reg_data_read }, 418 [GPIO_EFGH_INPUT_MASK] = { 1, gpio_reg_input_mask }, 419 /* Set IJKL */ 420 [GPIO_IJKL_DATA_VALUE] = { 2, gpio_reg_data_value }, 421 [GPIO_IJKL_DIRECTION] = { 2, gpio_reg_direction }, 422 [GPIO_IJKL_INT_ENABLE] = { 2, gpio_reg_int_enable }, 423 [GPIO_IJKL_INT_SENS_0] = { 2, gpio_reg_int_sens_0 }, 424 [GPIO_IJKL_INT_SENS_1] = { 2, gpio_reg_int_sens_1 }, 425 [GPIO_IJKL_INT_SENS_2] = { 2, gpio_reg_int_sens_2 }, 426 [GPIO_IJKL_INT_STATUS] = { 2, gpio_reg_int_status }, 427 [GPIO_IJKL_RESET_TOLERANT] = { 2, gpio_reg_reset_tolerant }, 428 [GPIO_IJKL_DEBOUNCE_1] = { 2, gpio_reg_debounce_1 }, 429 [GPIO_IJKL_DEBOUNCE_2] = { 2, gpio_reg_debounce_2 }, 430 [GPIO_IJKL_COMMAND_SRC_0] = { 2, gpio_reg_cmd_source_0 }, 431 [GPIO_IJKL_COMMAND_SRC_1] = { 2, gpio_reg_cmd_source_1 }, 432 [GPIO_IJKL_DATA_READ] = { 2, gpio_reg_data_read }, 433 [GPIO_IJKL_INPUT_MASK] = { 2, gpio_reg_input_mask }, 434 /* Set MNOP */ 435 [GPIO_MNOP_DATA_VALUE] = { 3, gpio_reg_data_value }, 436 [GPIO_MNOP_DIRECTION] = { 3, gpio_reg_direction }, 437 [GPIO_MNOP_INT_ENABLE] = { 3, gpio_reg_int_enable }, 438 [GPIO_MNOP_INT_SENS_0] = { 3, gpio_reg_int_sens_0 }, 439 [GPIO_MNOP_INT_SENS_1] = { 3, gpio_reg_int_sens_1 }, 440 [GPIO_MNOP_INT_SENS_2] = { 3, gpio_reg_int_sens_2 }, 441 [GPIO_MNOP_INT_STATUS] = { 3, gpio_reg_int_status }, 442 [GPIO_MNOP_RESET_TOLERANT] = { 3, gpio_reg_reset_tolerant }, 443 [GPIO_MNOP_DEBOUNCE_1] = { 3, gpio_reg_debounce_1 }, 444 [GPIO_MNOP_DEBOUNCE_2] = { 3, gpio_reg_debounce_2 }, 445 [GPIO_MNOP_COMMAND_SRC_0] = { 3, gpio_reg_cmd_source_0 }, 446 [GPIO_MNOP_COMMAND_SRC_1] = { 3, gpio_reg_cmd_source_1 }, 447 [GPIO_MNOP_DATA_READ] = { 3, gpio_reg_data_read }, 448 [GPIO_MNOP_INPUT_MASK] = { 3, gpio_reg_input_mask }, 449 /* Set QRST */ 450 [GPIO_QRST_DATA_VALUE] = { 4, gpio_reg_data_value }, 451 [GPIO_QRST_DIRECTION] = { 4, gpio_reg_direction }, 452 [GPIO_QRST_INT_ENABLE] = { 4, gpio_reg_int_enable }, 453 [GPIO_QRST_INT_SENS_0] = { 4, gpio_reg_int_sens_0 }, 454 [GPIO_QRST_INT_SENS_1] = { 4, gpio_reg_int_sens_1 }, 455 [GPIO_QRST_INT_SENS_2] = { 4, gpio_reg_int_sens_2 }, 456 [GPIO_QRST_INT_STATUS] = { 4, gpio_reg_int_status }, 457 [GPIO_QRST_RESET_TOLERANT] = { 4, gpio_reg_reset_tolerant }, 458 [GPIO_QRST_DEBOUNCE_1] = { 4, gpio_reg_debounce_1 }, 459 [GPIO_QRST_DEBOUNCE_2] = { 4, gpio_reg_debounce_2 }, 460 [GPIO_QRST_COMMAND_SRC_0] = { 4, gpio_reg_cmd_source_0 }, 461 [GPIO_QRST_COMMAND_SRC_1] = { 4, gpio_reg_cmd_source_1 }, 462 [GPIO_QRST_DATA_READ] = { 4, gpio_reg_data_read }, 463 [GPIO_QRST_INPUT_MASK] = { 4, gpio_reg_input_mask }, 464 /* Set UVWX */ 465 [GPIO_UVWX_DATA_VALUE] = { 5, gpio_reg_data_value }, 466 [GPIO_UVWX_DIRECTION] = { 5, gpio_reg_direction }, 467 [GPIO_UVWX_INT_ENABLE] = { 5, gpio_reg_int_enable }, 468 [GPIO_UVWX_INT_SENS_0] = { 5, gpio_reg_int_sens_0 }, 469 [GPIO_UVWX_INT_SENS_1] = { 5, gpio_reg_int_sens_1 }, 470 [GPIO_UVWX_INT_SENS_2] = { 5, gpio_reg_int_sens_2 }, 471 [GPIO_UVWX_INT_STATUS] = { 5, gpio_reg_int_status }, 472 [GPIO_UVWX_RESET_TOLERANT] = { 5, gpio_reg_reset_tolerant }, 473 [GPIO_UVWX_DEBOUNCE_1] = { 5, gpio_reg_debounce_1 }, 474 [GPIO_UVWX_DEBOUNCE_2] = { 5, gpio_reg_debounce_2 }, 475 [GPIO_UVWX_COMMAND_SRC_0] = { 5, gpio_reg_cmd_source_0 }, 476 [GPIO_UVWX_COMMAND_SRC_1] = { 5, gpio_reg_cmd_source_1 }, 477 [GPIO_UVWX_DATA_READ] = { 5, gpio_reg_data_read }, 478 [GPIO_UVWX_INPUT_MASK] = { 5, gpio_reg_input_mask }, 479 /* Set YZAAAB */ 480 [GPIO_YZAAAB_DATA_VALUE] = { 6, gpio_reg_data_value }, 481 [GPIO_YZAAAB_DIRECTION] = { 6, gpio_reg_direction }, 482 [GPIO_YZAAAB_INT_ENABLE] = { 6, gpio_reg_int_enable }, 483 [GPIO_YZAAAB_INT_SENS_0] = { 6, gpio_reg_int_sens_0 }, 484 [GPIO_YZAAAB_INT_SENS_1] = { 6, gpio_reg_int_sens_1 }, 485 [GPIO_YZAAAB_INT_SENS_2] = { 6, gpio_reg_int_sens_2 }, 486 [GPIO_YZAAAB_INT_STATUS] = { 6, gpio_reg_int_status }, 487 [GPIO_YZAAAB_RESET_TOLERANT] = { 6, gpio_reg_reset_tolerant }, 488 [GPIO_YZAAAB_DEBOUNCE_1] = { 6, gpio_reg_debounce_1 }, 489 [GPIO_YZAAAB_DEBOUNCE_2] = { 6, gpio_reg_debounce_2 }, 490 [GPIO_YZAAAB_COMMAND_SRC_0] = { 6, gpio_reg_cmd_source_0 }, 491 [GPIO_YZAAAB_COMMAND_SRC_1] = { 6, gpio_reg_cmd_source_1 }, 492 [GPIO_YZAAAB_DATA_READ] = { 6, gpio_reg_data_read }, 493 [GPIO_YZAAAB_INPUT_MASK] = { 6, gpio_reg_input_mask }, 494 /* Set AC (ast2500 only) */ 495 [GPIO_AC_DATA_VALUE] = { 7, gpio_reg_data_value }, 496 [GPIO_AC_DIRECTION] = { 7, gpio_reg_direction }, 497 [GPIO_AC_INT_ENABLE] = { 7, gpio_reg_int_enable }, 498 [GPIO_AC_INT_SENS_0] = { 7, gpio_reg_int_sens_0 }, 499 [GPIO_AC_INT_SENS_1] = { 7, gpio_reg_int_sens_1 }, 500 [GPIO_AC_INT_SENS_2] = { 7, gpio_reg_int_sens_2 }, 501 [GPIO_AC_INT_STATUS] = { 7, gpio_reg_int_status }, 502 [GPIO_AC_RESET_TOLERANT] = { 7, gpio_reg_reset_tolerant }, 503 [GPIO_AC_DEBOUNCE_1] = { 7, gpio_reg_debounce_1 }, 504 [GPIO_AC_DEBOUNCE_2] = { 7, gpio_reg_debounce_2 }, 505 [GPIO_AC_COMMAND_SRC_0] = { 7, gpio_reg_cmd_source_0 }, 506 [GPIO_AC_COMMAND_SRC_1] = { 7, gpio_reg_cmd_source_1 }, 507 [GPIO_AC_DATA_READ] = { 7, gpio_reg_data_read }, 508 [GPIO_AC_INPUT_MASK] = { 7, gpio_reg_input_mask }, 509 }; 510 511 static const AspeedGPIOReg aspeed_1_8v_gpios[GPIO_1_8V_REG_ARRAY_SIZE] = { 512 /* 1.8V Set ABCD */ 513 [GPIO_1_8V_ABCD_DATA_VALUE] = {0, gpio_reg_data_value}, 514 [GPIO_1_8V_ABCD_DIRECTION] = {0, gpio_reg_direction}, 515 [GPIO_1_8V_ABCD_INT_ENABLE] = {0, gpio_reg_int_enable}, 516 [GPIO_1_8V_ABCD_INT_SENS_0] = {0, gpio_reg_int_sens_0}, 517 [GPIO_1_8V_ABCD_INT_SENS_1] = {0, gpio_reg_int_sens_1}, 518 [GPIO_1_8V_ABCD_INT_SENS_2] = {0, gpio_reg_int_sens_2}, 519 [GPIO_1_8V_ABCD_INT_STATUS] = {0, gpio_reg_int_status}, 520 [GPIO_1_8V_ABCD_RESET_TOLERANT] = {0, gpio_reg_reset_tolerant}, 521 [GPIO_1_8V_ABCD_DEBOUNCE_1] = {0, gpio_reg_debounce_1}, 522 [GPIO_1_8V_ABCD_DEBOUNCE_2] = {0, gpio_reg_debounce_2}, 523 [GPIO_1_8V_ABCD_COMMAND_SRC_0] = {0, gpio_reg_cmd_source_0}, 524 [GPIO_1_8V_ABCD_COMMAND_SRC_1] = {0, gpio_reg_cmd_source_1}, 525 [GPIO_1_8V_ABCD_DATA_READ] = {0, gpio_reg_data_read}, 526 [GPIO_1_8V_ABCD_INPUT_MASK] = {0, gpio_reg_input_mask}, 527 /* 1.8V Set E */ 528 [GPIO_1_8V_E_DATA_VALUE] = {1, gpio_reg_data_value}, 529 [GPIO_1_8V_E_DIRECTION] = {1, gpio_reg_direction}, 530 [GPIO_1_8V_E_INT_ENABLE] = {1, gpio_reg_int_enable}, 531 [GPIO_1_8V_E_INT_SENS_0] = {1, gpio_reg_int_sens_0}, 532 [GPIO_1_8V_E_INT_SENS_1] = {1, gpio_reg_int_sens_1}, 533 [GPIO_1_8V_E_INT_SENS_2] = {1, gpio_reg_int_sens_2}, 534 [GPIO_1_8V_E_INT_STATUS] = {1, gpio_reg_int_status}, 535 [GPIO_1_8V_E_RESET_TOLERANT] = {1, gpio_reg_reset_tolerant}, 536 [GPIO_1_8V_E_DEBOUNCE_1] = {1, gpio_reg_debounce_1}, 537 [GPIO_1_8V_E_DEBOUNCE_2] = {1, gpio_reg_debounce_2}, 538 [GPIO_1_8V_E_COMMAND_SRC_0] = {1, gpio_reg_cmd_source_0}, 539 [GPIO_1_8V_E_COMMAND_SRC_1] = {1, gpio_reg_cmd_source_1}, 540 [GPIO_1_8V_E_DATA_READ] = {1, gpio_reg_data_read}, 541 [GPIO_1_8V_E_INPUT_MASK] = {1, gpio_reg_input_mask}, 542 }; 543 544 static uint64_t aspeed_gpio_read(void *opaque, hwaddr offset, uint32_t size) 545 { 546 AspeedGPIOState *s = ASPEED_GPIO(opaque); 547 AspeedGPIOClass *agc = ASPEED_GPIO_GET_CLASS(s); 548 uint64_t idx = -1; 549 const AspeedGPIOReg *reg; 550 GPIOSets *set; 551 uint32_t value = 0; 552 uint64_t debounce_value; 553 554 idx = offset >> 2; 555 if (idx >= GPIO_DEBOUNCE_TIME_1 && idx <= GPIO_DEBOUNCE_TIME_3) { 556 idx -= GPIO_DEBOUNCE_TIME_1; 557 debounce_value = (uint64_t) s->debounce_regs[idx]; 558 trace_aspeed_gpio_read(offset, debounce_value); 559 return debounce_value; 560 } 561 562 if (idx >= agc->reg_table_count) { 563 qemu_log_mask(LOG_GUEST_ERROR, "%s: idx 0x%" PRIx64 " out of bounds\n", 564 __func__, idx); 565 return 0; 566 } 567 568 reg = &agc->reg_table[idx]; 569 if (reg->set_idx >= agc->nr_gpio_sets) { 570 qemu_log_mask(LOG_GUEST_ERROR, "%s: no getter for offset 0x%" 571 PRIx64"\n", __func__, offset); 572 return 0; 573 } 574 575 set = &s->sets[reg->set_idx]; 576 switch (reg->type) { 577 case gpio_reg_data_value: 578 value = set->data_value; 579 break; 580 case gpio_reg_direction: 581 value = set->direction; 582 break; 583 case gpio_reg_int_enable: 584 value = set->int_enable; 585 break; 586 case gpio_reg_int_sens_0: 587 value = set->int_sens_0; 588 break; 589 case gpio_reg_int_sens_1: 590 value = set->int_sens_1; 591 break; 592 case gpio_reg_int_sens_2: 593 value = set->int_sens_2; 594 break; 595 case gpio_reg_int_status: 596 value = set->int_status; 597 break; 598 case gpio_reg_reset_tolerant: 599 value = set->reset_tol; 600 break; 601 case gpio_reg_debounce_1: 602 value = set->debounce_1; 603 break; 604 case gpio_reg_debounce_2: 605 value = set->debounce_2; 606 break; 607 case gpio_reg_cmd_source_0: 608 value = set->cmd_source_0; 609 break; 610 case gpio_reg_cmd_source_1: 611 value = set->cmd_source_1; 612 break; 613 case gpio_reg_data_read: 614 value = set->data_read; 615 break; 616 case gpio_reg_input_mask: 617 value = set->input_mask; 618 break; 619 default: 620 qemu_log_mask(LOG_GUEST_ERROR, "%s: no getter for offset 0x%" 621 PRIx64"\n", __func__, offset); 622 return 0; 623 } 624 625 trace_aspeed_gpio_read(offset, value); 626 return value; 627 } 628 629 static void aspeed_gpio_write_index_mode(void *opaque, hwaddr offset, 630 uint64_t data, uint32_t size) 631 { 632 633 AspeedGPIOState *s = ASPEED_GPIO(opaque); 634 AspeedGPIOClass *agc = ASPEED_GPIO_GET_CLASS(s); 635 const GPIOSetProperties *props; 636 GPIOSets *set; 637 uint32_t reg_idx_number = FIELD_EX32(data, GPIO_INDEX_REG, NUMBER); 638 uint32_t reg_idx_type = FIELD_EX32(data, GPIO_INDEX_REG, TYPE); 639 uint32_t reg_idx_command = FIELD_EX32(data, GPIO_INDEX_REG, COMMAND); 640 uint32_t set_idx = reg_idx_number / ASPEED_GPIOS_PER_SET; 641 uint32_t pin_idx = reg_idx_number % ASPEED_GPIOS_PER_SET; 642 uint32_t group_idx = pin_idx / GPIOS_PER_GROUP; 643 uint32_t reg_value = 0; 644 uint32_t cleared; 645 646 set = &s->sets[set_idx]; 647 props = &agc->props[set_idx]; 648 649 if (reg_idx_command) 650 qemu_log_mask(LOG_GUEST_ERROR, "%s: offset 0x%" PRIx64 "data 0x%" 651 PRIx64 "index mode wrong command 0x%x\n", 652 __func__, offset, data, reg_idx_command); 653 654 switch (reg_idx_type) { 655 case gpio_reg_idx_data: 656 reg_value = set->data_read; 657 reg_value = deposit32(reg_value, pin_idx, 1, 658 FIELD_EX32(data, GPIO_INDEX_REG, DATA_VALUE)); 659 reg_value &= props->output; 660 reg_value = update_value_control_source(set, set->data_value, 661 reg_value); 662 set->data_read = reg_value; 663 aspeed_gpio_update(s, set, reg_value, set->direction); 664 return; 665 case gpio_reg_idx_direction: 666 reg_value = set->direction; 667 reg_value = deposit32(reg_value, pin_idx, 1, 668 FIELD_EX32(data, GPIO_INDEX_REG, DIRECTION)); 669 /* 670 * where data is the value attempted to be written to the pin: 671 * pin type | input mask | output mask | expected value 672 * ------------------------------------------------------------ 673 * bidirectional | 1 | 1 | data 674 * input only | 1 | 0 | 0 675 * output only | 0 | 1 | 1 676 * no pin | 0 | 0 | 0 677 * 678 * which is captured by: 679 * data = ( data | ~input) & output; 680 */ 681 reg_value = (reg_value | ~props->input) & props->output; 682 set->direction = update_value_control_source(set, set->direction, 683 reg_value); 684 break; 685 case gpio_reg_idx_interrupt: 686 reg_value = set->int_enable; 687 reg_value = deposit32(reg_value, pin_idx, 1, 688 FIELD_EX32(data, GPIO_INDEX_REG, INT_ENABLE)); 689 set->int_enable = update_value_control_source(set, set->int_enable, 690 reg_value); 691 reg_value = set->int_sens_0; 692 reg_value = deposit32(reg_value, pin_idx, 1, 693 FIELD_EX32(data, GPIO_INDEX_REG, INT_SENS_0)); 694 set->int_sens_0 = update_value_control_source(set, set->int_sens_0, 695 reg_value); 696 reg_value = set->int_sens_1; 697 reg_value = deposit32(reg_value, pin_idx, 1, 698 FIELD_EX32(data, GPIO_INDEX_REG, INT_SENS_1)); 699 set->int_sens_1 = update_value_control_source(set, set->int_sens_1, 700 reg_value); 701 reg_value = set->int_sens_2; 702 reg_value = deposit32(reg_value, pin_idx, 1, 703 FIELD_EX32(data, GPIO_INDEX_REG, INT_SENS_2)); 704 set->int_sens_2 = update_value_control_source(set, set->int_sens_2, 705 reg_value); 706 /* set interrupt status */ 707 reg_value = set->int_status; 708 reg_value = deposit32(reg_value, pin_idx, 1, 709 FIELD_EX32(data, GPIO_INDEX_REG, INT_STATUS)); 710 cleared = ctpop32(reg_value & set->int_status); 711 if (s->pending && cleared) { 712 assert(s->pending >= cleared); 713 s->pending -= cleared; 714 } 715 set->int_status &= ~reg_value; 716 break; 717 case gpio_reg_idx_debounce: 718 reg_value = set->debounce_1; 719 reg_value = deposit32(reg_value, pin_idx, 1, 720 FIELD_EX32(data, GPIO_INDEX_REG, DEBOUNCE_1)); 721 set->debounce_1 = update_value_control_source(set, set->debounce_1, 722 reg_value); 723 reg_value = set->debounce_2; 724 reg_value = deposit32(reg_value, pin_idx, 1, 725 FIELD_EX32(data, GPIO_INDEX_REG, DEBOUNCE_2)); 726 set->debounce_2 = update_value_control_source(set, set->debounce_2, 727 reg_value); 728 return; 729 case gpio_reg_idx_tolerance: 730 reg_value = set->reset_tol; 731 reg_value = deposit32(reg_value, pin_idx, 1, 732 FIELD_EX32(data, GPIO_INDEX_REG, RESET_TOLERANT)); 733 set->reset_tol = update_value_control_source(set, set->reset_tol, 734 reg_value); 735 return; 736 case gpio_reg_idx_cmd_src: 737 reg_value = set->cmd_source_0; 738 reg_value = deposit32(reg_value, GPIOS_PER_GROUP * group_idx, 1, 739 FIELD_EX32(data, GPIO_INDEX_REG, COMMAND_SRC_0)); 740 set->cmd_source_0 = reg_value & ASPEED_CMD_SRC_MASK; 741 reg_value = set->cmd_source_1; 742 reg_value = deposit32(reg_value, GPIOS_PER_GROUP * group_idx, 1, 743 FIELD_EX32(data, GPIO_INDEX_REG, COMMAND_SRC_1)); 744 set->cmd_source_1 = reg_value & ASPEED_CMD_SRC_MASK; 745 return; 746 case gpio_reg_idx_input_mask: 747 reg_value = set->input_mask; 748 reg_value = deposit32(reg_value, pin_idx, 1, 749 FIELD_EX32(data, GPIO_INDEX_REG, INPUT_MASK)); 750 /* 751 * feeds into interrupt generation 752 * 0: read from data value reg will be updated 753 * 1: read from data value reg will not be updated 754 */ 755 set->input_mask = reg_value & props->input; 756 break; 757 default: 758 qemu_log_mask(LOG_GUEST_ERROR, "%s: offset 0x%" PRIx64 "data 0x%" 759 PRIx64 "index mode wrong type 0x%x\n", 760 __func__, offset, data, reg_idx_type); 761 return; 762 } 763 aspeed_gpio_update(s, set, set->data_value, UINT32_MAX); 764 return; 765 } 766 767 static void aspeed_gpio_write(void *opaque, hwaddr offset, uint64_t data, 768 uint32_t size) 769 { 770 AspeedGPIOState *s = ASPEED_GPIO(opaque); 771 AspeedGPIOClass *agc = ASPEED_GPIO_GET_CLASS(s); 772 const GPIOSetProperties *props; 773 uint64_t idx = -1; 774 const AspeedGPIOReg *reg; 775 GPIOSets *set; 776 uint32_t cleared; 777 778 trace_aspeed_gpio_write(offset, data); 779 780 idx = offset >> 2; 781 782 /* check gpio index mode */ 783 if (idx == R_GPIO_INDEX_REG) { 784 aspeed_gpio_write_index_mode(opaque, offset, data, size); 785 return; 786 } 787 788 if (idx >= GPIO_DEBOUNCE_TIME_1 && idx <= GPIO_DEBOUNCE_TIME_3) { 789 idx -= GPIO_DEBOUNCE_TIME_1; 790 s->debounce_regs[idx] = (uint32_t) data; 791 return; 792 } 793 794 if (idx >= agc->reg_table_count) { 795 qemu_log_mask(LOG_GUEST_ERROR, "%s: idx 0x%" PRIx64 " out of bounds\n", 796 __func__, idx); 797 return; 798 } 799 800 reg = &agc->reg_table[idx]; 801 if (reg->set_idx >= agc->nr_gpio_sets) { 802 qemu_log_mask(LOG_GUEST_ERROR, "%s: no setter for offset 0x%" 803 PRIx64"\n", __func__, offset); 804 return; 805 } 806 807 set = &s->sets[reg->set_idx]; 808 props = &agc->props[reg->set_idx]; 809 810 switch (reg->type) { 811 case gpio_reg_data_value: 812 data &= props->output; 813 data = update_value_control_source(set, set->data_value, data); 814 set->data_read = data; 815 aspeed_gpio_update(s, set, data, set->direction); 816 return; 817 case gpio_reg_direction: 818 /* 819 * where data is the value attempted to be written to the pin: 820 * pin type | input mask | output mask | expected value 821 * ------------------------------------------------------------ 822 * bidirectional | 1 | 1 | data 823 * input only | 1 | 0 | 0 824 * output only | 0 | 1 | 1 825 * no pin | 0 | 0 | 0 826 * 827 * which is captured by: 828 * data = ( data | ~input) & output; 829 */ 830 data = (data | ~props->input) & props->output; 831 set->direction = update_value_control_source(set, set->direction, data); 832 break; 833 case gpio_reg_int_enable: 834 set->int_enable = update_value_control_source(set, set->int_enable, 835 data); 836 break; 837 case gpio_reg_int_sens_0: 838 set->int_sens_0 = update_value_control_source(set, set->int_sens_0, 839 data); 840 break; 841 case gpio_reg_int_sens_1: 842 set->int_sens_1 = update_value_control_source(set, set->int_sens_1, 843 data); 844 break; 845 case gpio_reg_int_sens_2: 846 set->int_sens_2 = update_value_control_source(set, set->int_sens_2, 847 data); 848 break; 849 case gpio_reg_int_status: 850 cleared = ctpop32(data & set->int_status); 851 if (s->pending && cleared) { 852 assert(s->pending >= cleared); 853 s->pending -= cleared; 854 } 855 set->int_status &= ~data; 856 break; 857 case gpio_reg_reset_tolerant: 858 set->reset_tol = update_value_control_source(set, set->reset_tol, 859 data); 860 return; 861 case gpio_reg_debounce_1: 862 set->debounce_1 = update_value_control_source(set, set->debounce_1, 863 data); 864 return; 865 case gpio_reg_debounce_2: 866 set->debounce_2 = update_value_control_source(set, set->debounce_2, 867 data); 868 return; 869 case gpio_reg_cmd_source_0: 870 set->cmd_source_0 = data & ASPEED_CMD_SRC_MASK; 871 return; 872 case gpio_reg_cmd_source_1: 873 set->cmd_source_1 = data & ASPEED_CMD_SRC_MASK; 874 return; 875 case gpio_reg_data_read: 876 /* Read only register */ 877 return; 878 case gpio_reg_input_mask: 879 /* 880 * feeds into interrupt generation 881 * 0: read from data value reg will be updated 882 * 1: read from data value reg will not be updated 883 */ 884 set->input_mask = data & props->input; 885 break; 886 default: 887 qemu_log_mask(LOG_GUEST_ERROR, "%s: no setter for offset 0x%" 888 PRIx64"\n", __func__, offset); 889 return; 890 } 891 aspeed_gpio_update(s, set, set->data_value, UINT32_MAX); 892 return; 893 } 894 895 static int get_set_idx(AspeedGPIOState *s, const char *group, int *group_idx) 896 { 897 AspeedGPIOClass *agc = ASPEED_GPIO_GET_CLASS(s); 898 int set_idx, g_idx; 899 900 for (set_idx = 0; set_idx < agc->nr_gpio_sets; set_idx++) { 901 const GPIOSetProperties *set_props = &agc->props[set_idx]; 902 for (g_idx = 0; g_idx < ASPEED_GROUPS_PER_SET; g_idx++) { 903 if (!strncmp(group, set_props->group_label[g_idx], strlen(group))) { 904 *group_idx = g_idx; 905 return set_idx; 906 } 907 } 908 } 909 return -1; 910 } 911 912 static void aspeed_gpio_get_pin(Object *obj, Visitor *v, const char *name, 913 void *opaque, Error **errp) 914 { 915 int pin = 0xfff; 916 bool level = true; 917 char group[4]; 918 AspeedGPIOState *s = ASPEED_GPIO(obj); 919 int set_idx, group_idx = 0; 920 921 if (sscanf(name, "gpio%2[A-Z]%1d", group, &pin) != 2) { 922 /* 1.8V gpio */ 923 if (sscanf(name, "gpio%3[18A-E]%1d", group, &pin) != 2) { 924 error_setg(errp, "%s: error reading %s", __func__, name); 925 return; 926 } 927 } 928 set_idx = get_set_idx(s, group, &group_idx); 929 if (set_idx == -1) { 930 error_setg(errp, "%s: invalid group %s", __func__, group); 931 return; 932 } 933 pin = pin + group_idx * GPIOS_PER_GROUP; 934 level = aspeed_gpio_get_pin_level(s, set_idx, pin); 935 visit_type_bool(v, name, &level, errp); 936 } 937 938 static void aspeed_gpio_set_pin(Object *obj, Visitor *v, const char *name, 939 void *opaque, Error **errp) 940 { 941 bool level; 942 int pin = 0xfff; 943 char group[4]; 944 AspeedGPIOState *s = ASPEED_GPIO(obj); 945 int set_idx, group_idx = 0; 946 947 if (!visit_type_bool(v, name, &level, errp)) { 948 return; 949 } 950 if (sscanf(name, "gpio%2[A-Z]%1d", group, &pin) != 2) { 951 /* 1.8V gpio */ 952 if (sscanf(name, "gpio%3[18A-E]%1d", group, &pin) != 2) { 953 error_setg(errp, "%s: error reading %s", __func__, name); 954 return; 955 } 956 } 957 set_idx = get_set_idx(s, group, &group_idx); 958 if (set_idx == -1) { 959 error_setg(errp, "%s: invalid group %s", __func__, group); 960 return; 961 } 962 pin = pin + group_idx * GPIOS_PER_GROUP; 963 aspeed_gpio_set_pin_level(s, set_idx, pin, level); 964 } 965 966 /****************** Setup functions ******************/ 967 static const GPIOSetProperties ast2400_set_props[ASPEED_GPIO_MAX_NR_SETS] = { 968 [0] = {0xffffffff, 0xffffffff, {"A", "B", "C", "D"} }, 969 [1] = {0xffffffff, 0xffffffff, {"E", "F", "G", "H"} }, 970 [2] = {0xffffffff, 0xffffffff, {"I", "J", "K", "L"} }, 971 [3] = {0xffffffff, 0xffffffff, {"M", "N", "O", "P"} }, 972 [4] = {0xffffffff, 0xffffffff, {"Q", "R", "S", "T"} }, 973 [5] = {0xffffffff, 0x0000ffff, {"U", "V", "W", "X"} }, 974 [6] = {0x0000000f, 0x0fffff0f, {"Y", "Z", "AA", "AB"} }, 975 }; 976 977 static const GPIOSetProperties ast2500_set_props[ASPEED_GPIO_MAX_NR_SETS] = { 978 [0] = {0xffffffff, 0xffffffff, {"A", "B", "C", "D"} }, 979 [1] = {0xffffffff, 0xffffffff, {"E", "F", "G", "H"} }, 980 [2] = {0xffffffff, 0xffffffff, {"I", "J", "K", "L"} }, 981 [3] = {0xffffffff, 0xffffffff, {"M", "N", "O", "P"} }, 982 [4] = {0xffffffff, 0xffffffff, {"Q", "R", "S", "T"} }, 983 [5] = {0xffffffff, 0x0000ffff, {"U", "V", "W", "X"} }, 984 [6] = {0x0fffffff, 0x0fffffff, {"Y", "Z", "AA", "AB"} }, 985 [7] = {0x000000ff, 0x000000ff, {"AC"} }, 986 }; 987 988 static GPIOSetProperties ast2600_3_3v_set_props[ASPEED_GPIO_MAX_NR_SETS] = { 989 [0] = {0xffffffff, 0xffffffff, {"A", "B", "C", "D"} }, 990 [1] = {0xffffffff, 0xffffffff, {"E", "F", "G", "H"} }, 991 [2] = {0xffffffff, 0xffffffff, {"I", "J", "K", "L"} }, 992 [3] = {0xffffffff, 0xffffffff, {"M", "N", "O", "P"} }, 993 [4] = {0xffffffff, 0x00ffffff, {"Q", "R", "S", "T"} }, 994 [5] = {0xffffffff, 0xffffff00, {"U", "V", "W", "X"} }, 995 [6] = {0x0000ffff, 0x0000ffff, {"Y", "Z"} }, 996 }; 997 998 static GPIOSetProperties ast2600_1_8v_set_props[ASPEED_GPIO_MAX_NR_SETS] = { 999 [0] = {0xffffffff, 0xffffffff, {"18A", "18B", "18C", "18D"} }, 1000 [1] = {0x0000000f, 0x0000000f, {"18E"} }, 1001 }; 1002 1003 static GPIOSetProperties ast1030_set_props[ASPEED_GPIO_MAX_NR_SETS] = { 1004 [0] = {0xffffffff, 0xffffffff, {"A", "B", "C", "D"} }, 1005 [1] = {0xffffffff, 0xffffffff, {"E", "F", "G", "H"} }, 1006 [2] = {0xffffffff, 0xffffffff, {"I", "J", "K", "L"} }, 1007 [3] = {0xffffff3f, 0xffffff3f, {"M", "N", "O", "P"} }, 1008 [4] = {0xff060c1f, 0x00060c1f, {"Q", "R", "S", "T"} }, 1009 [5] = {0x000000ff, 0x00000000, {"U"} }, 1010 }; 1011 1012 static const MemoryRegionOps aspeed_gpio_ops = { 1013 .read = aspeed_gpio_read, 1014 .write = aspeed_gpio_write, 1015 .endianness = DEVICE_LITTLE_ENDIAN, 1016 .valid.min_access_size = 4, 1017 .valid.max_access_size = 4, 1018 }; 1019 1020 static void aspeed_gpio_reset(DeviceState *dev) 1021 { 1022 AspeedGPIOState *s = ASPEED_GPIO(dev); 1023 1024 /* TODO: respect the reset tolerance registers */ 1025 memset(s->sets, 0, sizeof(s->sets)); 1026 } 1027 1028 static void aspeed_gpio_realize(DeviceState *dev, Error **errp) 1029 { 1030 AspeedGPIOState *s = ASPEED_GPIO(dev); 1031 SysBusDevice *sbd = SYS_BUS_DEVICE(dev); 1032 AspeedGPIOClass *agc = ASPEED_GPIO_GET_CLASS(s); 1033 1034 /* Interrupt parent line */ 1035 sysbus_init_irq(sbd, &s->irq); 1036 1037 /* Individual GPIOs */ 1038 for (int i = 0; i < ASPEED_GPIO_MAX_NR_SETS; i++) { 1039 const GPIOSetProperties *props = &agc->props[i]; 1040 uint32_t skip = ~(props->input | props->output); 1041 for (int j = 0; j < ASPEED_GPIOS_PER_SET; j++) { 1042 if (skip >> j & 1) { 1043 continue; 1044 } 1045 sysbus_init_irq(sbd, &s->gpios[i][j]); 1046 } 1047 } 1048 1049 memory_region_init_io(&s->iomem, OBJECT(s), &aspeed_gpio_ops, s, 1050 TYPE_ASPEED_GPIO, 0x800); 1051 1052 sysbus_init_mmio(sbd, &s->iomem); 1053 } 1054 1055 static void aspeed_gpio_init(Object *obj) 1056 { 1057 AspeedGPIOState *s = ASPEED_GPIO(obj); 1058 AspeedGPIOClass *agc = ASPEED_GPIO_GET_CLASS(s); 1059 1060 for (int i = 0; i < ASPEED_GPIO_MAX_NR_SETS; i++) { 1061 const GPIOSetProperties *props = &agc->props[i]; 1062 uint32_t skip = ~(props->input | props->output); 1063 for (int j = 0; j < ASPEED_GPIOS_PER_SET; j++) { 1064 if (skip >> j & 1) { 1065 continue; 1066 } 1067 int group_idx = j / GPIOS_PER_GROUP; 1068 int pin_idx = j % GPIOS_PER_GROUP; 1069 const char *group = &props->group_label[group_idx][0]; 1070 char *name = g_strdup_printf("gpio%s%d", group, pin_idx); 1071 object_property_add(obj, name, "bool", aspeed_gpio_get_pin, 1072 aspeed_gpio_set_pin, NULL, NULL); 1073 g_free(name); 1074 } 1075 } 1076 } 1077 1078 static const VMStateDescription vmstate_gpio_regs = { 1079 .name = TYPE_ASPEED_GPIO"/regs", 1080 .version_id = 1, 1081 .minimum_version_id = 1, 1082 .fields = (const VMStateField[]) { 1083 VMSTATE_UINT32(data_value, GPIOSets), 1084 VMSTATE_UINT32(data_read, GPIOSets), 1085 VMSTATE_UINT32(direction, GPIOSets), 1086 VMSTATE_UINT32(int_enable, GPIOSets), 1087 VMSTATE_UINT32(int_sens_0, GPIOSets), 1088 VMSTATE_UINT32(int_sens_1, GPIOSets), 1089 VMSTATE_UINT32(int_sens_2, GPIOSets), 1090 VMSTATE_UINT32(int_status, GPIOSets), 1091 VMSTATE_UINT32(reset_tol, GPIOSets), 1092 VMSTATE_UINT32(cmd_source_0, GPIOSets), 1093 VMSTATE_UINT32(cmd_source_1, GPIOSets), 1094 VMSTATE_UINT32(debounce_1, GPIOSets), 1095 VMSTATE_UINT32(debounce_2, GPIOSets), 1096 VMSTATE_UINT32(input_mask, GPIOSets), 1097 VMSTATE_END_OF_LIST(), 1098 } 1099 }; 1100 1101 static const VMStateDescription vmstate_aspeed_gpio = { 1102 .name = TYPE_ASPEED_GPIO, 1103 .version_id = 1, 1104 .minimum_version_id = 1, 1105 .fields = (const VMStateField[]) { 1106 VMSTATE_STRUCT_ARRAY(sets, AspeedGPIOState, ASPEED_GPIO_MAX_NR_SETS, 1107 1, vmstate_gpio_regs, GPIOSets), 1108 VMSTATE_UINT32_ARRAY(debounce_regs, AspeedGPIOState, 1109 ASPEED_GPIO_NR_DEBOUNCE_REGS), 1110 VMSTATE_END_OF_LIST(), 1111 } 1112 }; 1113 1114 static void aspeed_gpio_class_init(ObjectClass *klass, void *data) 1115 { 1116 DeviceClass *dc = DEVICE_CLASS(klass); 1117 1118 dc->realize = aspeed_gpio_realize; 1119 device_class_set_legacy_reset(dc, aspeed_gpio_reset); 1120 dc->desc = "Aspeed GPIO Controller"; 1121 dc->vmsd = &vmstate_aspeed_gpio; 1122 } 1123 1124 static void aspeed_gpio_ast2400_class_init(ObjectClass *klass, void *data) 1125 { 1126 AspeedGPIOClass *agc = ASPEED_GPIO_CLASS(klass); 1127 1128 agc->props = ast2400_set_props; 1129 agc->nr_gpio_pins = 216; 1130 agc->nr_gpio_sets = 7; 1131 agc->reg_table = aspeed_3_3v_gpios; 1132 agc->reg_table_count = GPIO_3_3V_REG_ARRAY_SIZE; 1133 } 1134 1135 static void aspeed_gpio_2500_class_init(ObjectClass *klass, void *data) 1136 { 1137 AspeedGPIOClass *agc = ASPEED_GPIO_CLASS(klass); 1138 1139 agc->props = ast2500_set_props; 1140 agc->nr_gpio_pins = 228; 1141 agc->nr_gpio_sets = 8; 1142 agc->reg_table = aspeed_3_3v_gpios; 1143 agc->reg_table_count = GPIO_3_3V_REG_ARRAY_SIZE; 1144 } 1145 1146 static void aspeed_gpio_ast2600_3_3v_class_init(ObjectClass *klass, void *data) 1147 { 1148 AspeedGPIOClass *agc = ASPEED_GPIO_CLASS(klass); 1149 1150 agc->props = ast2600_3_3v_set_props; 1151 agc->nr_gpio_pins = 208; 1152 agc->nr_gpio_sets = 7; 1153 agc->reg_table = aspeed_3_3v_gpios; 1154 agc->reg_table_count = GPIO_3_3V_REG_ARRAY_SIZE; 1155 } 1156 1157 static void aspeed_gpio_ast2600_1_8v_class_init(ObjectClass *klass, void *data) 1158 { 1159 AspeedGPIOClass *agc = ASPEED_GPIO_CLASS(klass); 1160 1161 agc->props = ast2600_1_8v_set_props; 1162 agc->nr_gpio_pins = 36; 1163 agc->nr_gpio_sets = 2; 1164 agc->reg_table = aspeed_1_8v_gpios; 1165 agc->reg_table_count = GPIO_1_8V_REG_ARRAY_SIZE; 1166 } 1167 1168 static void aspeed_gpio_1030_class_init(ObjectClass *klass, void *data) 1169 { 1170 AspeedGPIOClass *agc = ASPEED_GPIO_CLASS(klass); 1171 1172 agc->props = ast1030_set_props; 1173 agc->nr_gpio_pins = 151; 1174 agc->nr_gpio_sets = 6; 1175 agc->reg_table = aspeed_3_3v_gpios; 1176 agc->reg_table_count = GPIO_3_3V_REG_ARRAY_SIZE; 1177 } 1178 1179 static const TypeInfo aspeed_gpio_info = { 1180 .name = TYPE_ASPEED_GPIO, 1181 .parent = TYPE_SYS_BUS_DEVICE, 1182 .instance_size = sizeof(AspeedGPIOState), 1183 .class_size = sizeof(AspeedGPIOClass), 1184 .class_init = aspeed_gpio_class_init, 1185 .abstract = true, 1186 }; 1187 1188 static const TypeInfo aspeed_gpio_ast2400_info = { 1189 .name = TYPE_ASPEED_GPIO "-ast2400", 1190 .parent = TYPE_ASPEED_GPIO, 1191 .class_init = aspeed_gpio_ast2400_class_init, 1192 .instance_init = aspeed_gpio_init, 1193 }; 1194 1195 static const TypeInfo aspeed_gpio_ast2500_info = { 1196 .name = TYPE_ASPEED_GPIO "-ast2500", 1197 .parent = TYPE_ASPEED_GPIO, 1198 .class_init = aspeed_gpio_2500_class_init, 1199 .instance_init = aspeed_gpio_init, 1200 }; 1201 1202 static const TypeInfo aspeed_gpio_ast2600_3_3v_info = { 1203 .name = TYPE_ASPEED_GPIO "-ast2600", 1204 .parent = TYPE_ASPEED_GPIO, 1205 .class_init = aspeed_gpio_ast2600_3_3v_class_init, 1206 .instance_init = aspeed_gpio_init, 1207 }; 1208 1209 static const TypeInfo aspeed_gpio_ast2600_1_8v_info = { 1210 .name = TYPE_ASPEED_GPIO "-ast2600-1_8v", 1211 .parent = TYPE_ASPEED_GPIO, 1212 .class_init = aspeed_gpio_ast2600_1_8v_class_init, 1213 .instance_init = aspeed_gpio_init, 1214 }; 1215 1216 static const TypeInfo aspeed_gpio_ast1030_info = { 1217 .name = TYPE_ASPEED_GPIO "-ast1030", 1218 .parent = TYPE_ASPEED_GPIO, 1219 .class_init = aspeed_gpio_1030_class_init, 1220 .instance_init = aspeed_gpio_init, 1221 }; 1222 1223 static void aspeed_gpio_register_types(void) 1224 { 1225 type_register_static(&aspeed_gpio_info); 1226 type_register_static(&aspeed_gpio_ast2400_info); 1227 type_register_static(&aspeed_gpio_ast2500_info); 1228 type_register_static(&aspeed_gpio_ast2600_3_3v_info); 1229 type_register_static(&aspeed_gpio_ast2600_1_8v_info); 1230 type_register_static(&aspeed_gpio_ast1030_info); 1231 } 1232 1233 type_init(aspeed_gpio_register_types); 1234