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 = 1 << 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 reg = &agc->reg_table[idx]; 563 if (reg->set_idx >= agc->nr_gpio_sets) { 564 qemu_log_mask(LOG_GUEST_ERROR, "%s: no getter for offset 0x%" 565 PRIx64"\n", __func__, offset); 566 return 0; 567 } 568 569 set = &s->sets[reg->set_idx]; 570 switch (reg->type) { 571 case gpio_reg_data_value: 572 value = set->data_value; 573 break; 574 case gpio_reg_direction: 575 value = set->direction; 576 break; 577 case gpio_reg_int_enable: 578 value = set->int_enable; 579 break; 580 case gpio_reg_int_sens_0: 581 value = set->int_sens_0; 582 break; 583 case gpio_reg_int_sens_1: 584 value = set->int_sens_1; 585 break; 586 case gpio_reg_int_sens_2: 587 value = set->int_sens_2; 588 break; 589 case gpio_reg_int_status: 590 value = set->int_status; 591 break; 592 case gpio_reg_reset_tolerant: 593 value = set->reset_tol; 594 break; 595 case gpio_reg_debounce_1: 596 value = set->debounce_1; 597 break; 598 case gpio_reg_debounce_2: 599 value = set->debounce_2; 600 break; 601 case gpio_reg_cmd_source_0: 602 value = set->cmd_source_0; 603 break; 604 case gpio_reg_cmd_source_1: 605 value = set->cmd_source_1; 606 break; 607 case gpio_reg_data_read: 608 value = set->data_read; 609 break; 610 case gpio_reg_input_mask: 611 value = set->input_mask; 612 break; 613 default: 614 qemu_log_mask(LOG_GUEST_ERROR, "%s: no getter for offset 0x%" 615 PRIx64"\n", __func__, offset); 616 return 0; 617 } 618 619 trace_aspeed_gpio_read(offset, value); 620 return value; 621 } 622 623 static void aspeed_gpio_write_index_mode(void *opaque, hwaddr offset, 624 uint64_t data, uint32_t size) 625 { 626 627 AspeedGPIOState *s = ASPEED_GPIO(opaque); 628 AspeedGPIOClass *agc = ASPEED_GPIO_GET_CLASS(s); 629 const GPIOSetProperties *props; 630 GPIOSets *set; 631 uint32_t reg_idx_number = FIELD_EX32(data, GPIO_INDEX_REG, NUMBER); 632 uint32_t reg_idx_type = FIELD_EX32(data, GPIO_INDEX_REG, TYPE); 633 uint32_t reg_idx_command = FIELD_EX32(data, GPIO_INDEX_REG, COMMAND); 634 uint32_t set_idx = reg_idx_number / ASPEED_GPIOS_PER_SET; 635 uint32_t pin_idx = reg_idx_number % ASPEED_GPIOS_PER_SET; 636 uint32_t group_idx = pin_idx / GPIOS_PER_GROUP; 637 uint32_t reg_value = 0; 638 uint32_t cleared; 639 640 set = &s->sets[set_idx]; 641 props = &agc->props[set_idx]; 642 643 if (reg_idx_command) 644 qemu_log_mask(LOG_GUEST_ERROR, "%s: offset 0x%" PRIx64 "data 0x%" 645 PRIx64 "index mode wrong command 0x%x\n", 646 __func__, offset, data, reg_idx_command); 647 648 switch (reg_idx_type) { 649 case gpio_reg_idx_data: 650 reg_value = set->data_read; 651 reg_value = deposit32(reg_value, pin_idx, 1, 652 FIELD_EX32(data, GPIO_INDEX_REG, DATA_VALUE)); 653 reg_value &= props->output; 654 reg_value = update_value_control_source(set, set->data_value, 655 reg_value); 656 set->data_read = reg_value; 657 aspeed_gpio_update(s, set, reg_value, set->direction); 658 return; 659 case gpio_reg_idx_direction: 660 reg_value = set->direction; 661 reg_value = deposit32(reg_value, pin_idx, 1, 662 FIELD_EX32(data, GPIO_INDEX_REG, DIRECTION)); 663 /* 664 * where data is the value attempted to be written to the pin: 665 * pin type | input mask | output mask | expected value 666 * ------------------------------------------------------------ 667 * bidirectional | 1 | 1 | data 668 * input only | 1 | 0 | 0 669 * output only | 0 | 1 | 1 670 * no pin | 0 | 0 | 0 671 * 672 * which is captured by: 673 * data = ( data | ~input) & output; 674 */ 675 reg_value = (reg_value | ~props->input) & props->output; 676 set->direction = update_value_control_source(set, set->direction, 677 reg_value); 678 break; 679 case gpio_reg_idx_interrupt: 680 reg_value = set->int_enable; 681 reg_value = deposit32(reg_value, pin_idx, 1, 682 FIELD_EX32(data, GPIO_INDEX_REG, INT_ENABLE)); 683 set->int_enable = update_value_control_source(set, set->int_enable, 684 reg_value); 685 reg_value = set->int_sens_0; 686 reg_value = deposit32(reg_value, pin_idx, 1, 687 FIELD_EX32(data, GPIO_INDEX_REG, INT_SENS_0)); 688 set->int_sens_0 = update_value_control_source(set, set->int_sens_0, 689 reg_value); 690 reg_value = set->int_sens_1; 691 reg_value = deposit32(reg_value, pin_idx, 1, 692 FIELD_EX32(data, GPIO_INDEX_REG, INT_SENS_1)); 693 set->int_sens_1 = update_value_control_source(set, set->int_sens_1, 694 reg_value); 695 reg_value = set->int_sens_2; 696 reg_value = deposit32(reg_value, pin_idx, 1, 697 FIELD_EX32(data, GPIO_INDEX_REG, INT_SENS_2)); 698 set->int_sens_2 = update_value_control_source(set, set->int_sens_2, 699 reg_value); 700 /* set interrupt status */ 701 reg_value = set->int_status; 702 reg_value = deposit32(reg_value, pin_idx, 1, 703 FIELD_EX32(data, GPIO_INDEX_REG, INT_STATUS)); 704 cleared = ctpop32(reg_value & set->int_status); 705 if (s->pending && cleared) { 706 assert(s->pending >= cleared); 707 s->pending -= cleared; 708 } 709 set->int_status &= ~reg_value; 710 break; 711 case gpio_reg_idx_debounce: 712 reg_value = set->debounce_1; 713 reg_value = deposit32(reg_value, pin_idx, 1, 714 FIELD_EX32(data, GPIO_INDEX_REG, DEBOUNCE_1)); 715 set->debounce_1 = update_value_control_source(set, set->debounce_1, 716 reg_value); 717 reg_value = set->debounce_2; 718 reg_value = deposit32(reg_value, pin_idx, 1, 719 FIELD_EX32(data, GPIO_INDEX_REG, DEBOUNCE_2)); 720 set->debounce_2 = update_value_control_source(set, set->debounce_2, 721 reg_value); 722 return; 723 case gpio_reg_idx_tolerance: 724 reg_value = set->reset_tol; 725 reg_value = deposit32(reg_value, pin_idx, 1, 726 FIELD_EX32(data, GPIO_INDEX_REG, RESET_TOLERANT)); 727 set->reset_tol = update_value_control_source(set, set->reset_tol, 728 reg_value); 729 return; 730 case gpio_reg_idx_cmd_src: 731 reg_value = set->cmd_source_0; 732 reg_value = deposit32(reg_value, GPIOS_PER_GROUP * group_idx, 1, 733 FIELD_EX32(data, GPIO_INDEX_REG, COMMAND_SRC_0)); 734 set->cmd_source_0 = reg_value & ASPEED_CMD_SRC_MASK; 735 reg_value = set->cmd_source_1; 736 reg_value = deposit32(reg_value, GPIOS_PER_GROUP * group_idx, 1, 737 FIELD_EX32(data, GPIO_INDEX_REG, COMMAND_SRC_1)); 738 set->cmd_source_1 = reg_value & ASPEED_CMD_SRC_MASK; 739 return; 740 case gpio_reg_idx_input_mask: 741 reg_value = set->input_mask; 742 reg_value = deposit32(reg_value, pin_idx, 1, 743 FIELD_EX32(data, GPIO_INDEX_REG, INPUT_MASK)); 744 /* 745 * feeds into interrupt generation 746 * 0: read from data value reg will be updated 747 * 1: read from data value reg will not be updated 748 */ 749 set->input_mask = reg_value & props->input; 750 break; 751 default: 752 qemu_log_mask(LOG_GUEST_ERROR, "%s: offset 0x%" PRIx64 "data 0x%" 753 PRIx64 "index mode wrong type 0x%x\n", 754 __func__, offset, data, reg_idx_type); 755 return; 756 } 757 aspeed_gpio_update(s, set, set->data_value, UINT32_MAX); 758 return; 759 } 760 761 static void aspeed_gpio_write(void *opaque, hwaddr offset, uint64_t data, 762 uint32_t size) 763 { 764 AspeedGPIOState *s = ASPEED_GPIO(opaque); 765 AspeedGPIOClass *agc = ASPEED_GPIO_GET_CLASS(s); 766 const GPIOSetProperties *props; 767 uint64_t idx = -1; 768 const AspeedGPIOReg *reg; 769 GPIOSets *set; 770 uint32_t cleared; 771 772 trace_aspeed_gpio_write(offset, data); 773 774 idx = offset >> 2; 775 776 /* check gpio index mode */ 777 if (idx == R_GPIO_INDEX_REG) { 778 aspeed_gpio_write_index_mode(opaque, offset, data, size); 779 return; 780 } 781 782 if (idx >= GPIO_DEBOUNCE_TIME_1 && idx <= GPIO_DEBOUNCE_TIME_3) { 783 idx -= GPIO_DEBOUNCE_TIME_1; 784 s->debounce_regs[idx] = (uint32_t) data; 785 return; 786 } 787 788 reg = &agc->reg_table[idx]; 789 if (reg->set_idx >= agc->nr_gpio_sets) { 790 qemu_log_mask(LOG_GUEST_ERROR, "%s: no setter for offset 0x%" 791 PRIx64"\n", __func__, offset); 792 return; 793 } 794 795 set = &s->sets[reg->set_idx]; 796 props = &agc->props[reg->set_idx]; 797 798 switch (reg->type) { 799 case gpio_reg_data_value: 800 data &= props->output; 801 data = update_value_control_source(set, set->data_value, data); 802 set->data_read = data; 803 aspeed_gpio_update(s, set, data, set->direction); 804 return; 805 case gpio_reg_direction: 806 /* 807 * where data is the value attempted to be written to the pin: 808 * pin type | input mask | output mask | expected value 809 * ------------------------------------------------------------ 810 * bidirectional | 1 | 1 | data 811 * input only | 1 | 0 | 0 812 * output only | 0 | 1 | 1 813 * no pin | 0 | 0 | 0 814 * 815 * which is captured by: 816 * data = ( data | ~input) & output; 817 */ 818 data = (data | ~props->input) & props->output; 819 set->direction = update_value_control_source(set, set->direction, data); 820 break; 821 case gpio_reg_int_enable: 822 set->int_enable = update_value_control_source(set, set->int_enable, 823 data); 824 break; 825 case gpio_reg_int_sens_0: 826 set->int_sens_0 = update_value_control_source(set, set->int_sens_0, 827 data); 828 break; 829 case gpio_reg_int_sens_1: 830 set->int_sens_1 = update_value_control_source(set, set->int_sens_1, 831 data); 832 break; 833 case gpio_reg_int_sens_2: 834 set->int_sens_2 = update_value_control_source(set, set->int_sens_2, 835 data); 836 break; 837 case gpio_reg_int_status: 838 cleared = ctpop32(data & set->int_status); 839 if (s->pending && cleared) { 840 assert(s->pending >= cleared); 841 s->pending -= cleared; 842 } 843 set->int_status &= ~data; 844 break; 845 case gpio_reg_reset_tolerant: 846 set->reset_tol = update_value_control_source(set, set->reset_tol, 847 data); 848 return; 849 case gpio_reg_debounce_1: 850 set->debounce_1 = update_value_control_source(set, set->debounce_1, 851 data); 852 return; 853 case gpio_reg_debounce_2: 854 set->debounce_2 = update_value_control_source(set, set->debounce_2, 855 data); 856 return; 857 case gpio_reg_cmd_source_0: 858 set->cmd_source_0 = data & ASPEED_CMD_SRC_MASK; 859 return; 860 case gpio_reg_cmd_source_1: 861 set->cmd_source_1 = data & ASPEED_CMD_SRC_MASK; 862 return; 863 case gpio_reg_data_read: 864 /* Read only register */ 865 return; 866 case gpio_reg_input_mask: 867 /* 868 * feeds into interrupt generation 869 * 0: read from data value reg will be updated 870 * 1: read from data value reg will not be updated 871 */ 872 set->input_mask = data & props->input; 873 break; 874 default: 875 qemu_log_mask(LOG_GUEST_ERROR, "%s: no setter for offset 0x%" 876 PRIx64"\n", __func__, offset); 877 return; 878 } 879 aspeed_gpio_update(s, set, set->data_value, UINT32_MAX); 880 return; 881 } 882 883 static int get_set_idx(AspeedGPIOState *s, const char *group, int *group_idx) 884 { 885 AspeedGPIOClass *agc = ASPEED_GPIO_GET_CLASS(s); 886 int set_idx, g_idx; 887 888 for (set_idx = 0; set_idx < agc->nr_gpio_sets; set_idx++) { 889 const GPIOSetProperties *set_props = &agc->props[set_idx]; 890 for (g_idx = 0; g_idx < ASPEED_GROUPS_PER_SET; g_idx++) { 891 if (!strncmp(group, set_props->group_label[g_idx], strlen(group))) { 892 *group_idx = g_idx; 893 return set_idx; 894 } 895 } 896 } 897 return -1; 898 } 899 900 static void aspeed_gpio_get_pin(Object *obj, Visitor *v, const char *name, 901 void *opaque, Error **errp) 902 { 903 int pin = 0xfff; 904 bool level = true; 905 char group[4]; 906 AspeedGPIOState *s = ASPEED_GPIO(obj); 907 int set_idx, group_idx = 0; 908 909 if (sscanf(name, "gpio%2[A-Z]%1d", group, &pin) != 2) { 910 /* 1.8V gpio */ 911 if (sscanf(name, "gpio%3[18A-E]%1d", group, &pin) != 2) { 912 error_setg(errp, "%s: error reading %s", __func__, name); 913 return; 914 } 915 } 916 set_idx = get_set_idx(s, group, &group_idx); 917 if (set_idx == -1) { 918 error_setg(errp, "%s: invalid group %s", __func__, group); 919 return; 920 } 921 pin = pin + group_idx * GPIOS_PER_GROUP; 922 level = aspeed_gpio_get_pin_level(s, set_idx, pin); 923 visit_type_bool(v, name, &level, errp); 924 } 925 926 static void aspeed_gpio_set_pin(Object *obj, Visitor *v, const char *name, 927 void *opaque, Error **errp) 928 { 929 bool level; 930 int pin = 0xfff; 931 char group[4]; 932 AspeedGPIOState *s = ASPEED_GPIO(obj); 933 int set_idx, group_idx = 0; 934 935 if (!visit_type_bool(v, name, &level, errp)) { 936 return; 937 } 938 if (sscanf(name, "gpio%2[A-Z]%1d", group, &pin) != 2) { 939 /* 1.8V gpio */ 940 if (sscanf(name, "gpio%3[18A-E]%1d", group, &pin) != 2) { 941 error_setg(errp, "%s: error reading %s", __func__, name); 942 return; 943 } 944 } 945 set_idx = get_set_idx(s, group, &group_idx); 946 if (set_idx == -1) { 947 error_setg(errp, "%s: invalid group %s", __func__, group); 948 return; 949 } 950 pin = pin + group_idx * GPIOS_PER_GROUP; 951 aspeed_gpio_set_pin_level(s, set_idx, pin, level); 952 } 953 954 /****************** Setup functions ******************/ 955 static const GPIOSetProperties ast2400_set_props[ASPEED_GPIO_MAX_NR_SETS] = { 956 [0] = {0xffffffff, 0xffffffff, {"A", "B", "C", "D"} }, 957 [1] = {0xffffffff, 0xffffffff, {"E", "F", "G", "H"} }, 958 [2] = {0xffffffff, 0xffffffff, {"I", "J", "K", "L"} }, 959 [3] = {0xffffffff, 0xffffffff, {"M", "N", "O", "P"} }, 960 [4] = {0xffffffff, 0xffffffff, {"Q", "R", "S", "T"} }, 961 [5] = {0xffffffff, 0x0000ffff, {"U", "V", "W", "X"} }, 962 [6] = {0x0000000f, 0x0fffff0f, {"Y", "Z", "AA", "AB"} }, 963 }; 964 965 static const GPIOSetProperties ast2500_set_props[ASPEED_GPIO_MAX_NR_SETS] = { 966 [0] = {0xffffffff, 0xffffffff, {"A", "B", "C", "D"} }, 967 [1] = {0xffffffff, 0xffffffff, {"E", "F", "G", "H"} }, 968 [2] = {0xffffffff, 0xffffffff, {"I", "J", "K", "L"} }, 969 [3] = {0xffffffff, 0xffffffff, {"M", "N", "O", "P"} }, 970 [4] = {0xffffffff, 0xffffffff, {"Q", "R", "S", "T"} }, 971 [5] = {0xffffffff, 0x0000ffff, {"U", "V", "W", "X"} }, 972 [6] = {0x0fffffff, 0x0fffffff, {"Y", "Z", "AA", "AB"} }, 973 [7] = {0x000000ff, 0x000000ff, {"AC"} }, 974 }; 975 976 static GPIOSetProperties ast2600_3_3v_set_props[ASPEED_GPIO_MAX_NR_SETS] = { 977 [0] = {0xffffffff, 0xffffffff, {"A", "B", "C", "D"} }, 978 [1] = {0xffffffff, 0xffffffff, {"E", "F", "G", "H"} }, 979 [2] = {0xffffffff, 0xffffffff, {"I", "J", "K", "L"} }, 980 [3] = {0xffffffff, 0xffffffff, {"M", "N", "O", "P"} }, 981 [4] = {0xffffffff, 0x00ffffff, {"Q", "R", "S", "T"} }, 982 [5] = {0xffffffff, 0xffffff00, {"U", "V", "W", "X"} }, 983 [6] = {0x0000ffff, 0x0000ffff, {"Y", "Z"} }, 984 }; 985 986 static GPIOSetProperties ast2600_1_8v_set_props[ASPEED_GPIO_MAX_NR_SETS] = { 987 [0] = {0xffffffff, 0xffffffff, {"18A", "18B", "18C", "18D"} }, 988 [1] = {0x0000000f, 0x0000000f, {"18E"} }, 989 }; 990 991 static GPIOSetProperties ast1030_set_props[ASPEED_GPIO_MAX_NR_SETS] = { 992 [0] = {0xffffffff, 0xffffffff, {"A", "B", "C", "D"} }, 993 [1] = {0xffffffff, 0xffffffff, {"E", "F", "G", "H"} }, 994 [2] = {0xffffffff, 0xffffffff, {"I", "J", "K", "L"} }, 995 [3] = {0xffffff3f, 0xffffff3f, {"M", "N", "O", "P"} }, 996 [4] = {0xff060c1f, 0x00060c1f, {"Q", "R", "S", "T"} }, 997 [5] = {0x000000ff, 0x00000000, {"U"} }, 998 }; 999 1000 static const MemoryRegionOps aspeed_gpio_ops = { 1001 .read = aspeed_gpio_read, 1002 .write = aspeed_gpio_write, 1003 .endianness = DEVICE_LITTLE_ENDIAN, 1004 .valid.min_access_size = 4, 1005 .valid.max_access_size = 4, 1006 }; 1007 1008 static void aspeed_gpio_reset(DeviceState *dev) 1009 { 1010 AspeedGPIOState *s = ASPEED_GPIO(dev); 1011 1012 /* TODO: respect the reset tolerance registers */ 1013 memset(s->sets, 0, sizeof(s->sets)); 1014 } 1015 1016 static void aspeed_gpio_realize(DeviceState *dev, Error **errp) 1017 { 1018 AspeedGPIOState *s = ASPEED_GPIO(dev); 1019 SysBusDevice *sbd = SYS_BUS_DEVICE(dev); 1020 AspeedGPIOClass *agc = ASPEED_GPIO_GET_CLASS(s); 1021 1022 /* Interrupt parent line */ 1023 sysbus_init_irq(sbd, &s->irq); 1024 1025 /* Individual GPIOs */ 1026 for (int i = 0; i < ASPEED_GPIO_MAX_NR_SETS; i++) { 1027 const GPIOSetProperties *props = &agc->props[i]; 1028 uint32_t skip = ~(props->input | props->output); 1029 for (int j = 0; j < ASPEED_GPIOS_PER_SET; j++) { 1030 if (skip >> j & 1) { 1031 continue; 1032 } 1033 sysbus_init_irq(sbd, &s->gpios[i][j]); 1034 } 1035 } 1036 1037 memory_region_init_io(&s->iomem, OBJECT(s), &aspeed_gpio_ops, s, 1038 TYPE_ASPEED_GPIO, 0x800); 1039 1040 sysbus_init_mmio(sbd, &s->iomem); 1041 } 1042 1043 static void aspeed_gpio_init(Object *obj) 1044 { 1045 AspeedGPIOState *s = ASPEED_GPIO(obj); 1046 AspeedGPIOClass *agc = ASPEED_GPIO_GET_CLASS(s); 1047 1048 for (int i = 0; i < ASPEED_GPIO_MAX_NR_SETS; i++) { 1049 const GPIOSetProperties *props = &agc->props[i]; 1050 uint32_t skip = ~(props->input | props->output); 1051 for (int j = 0; j < ASPEED_GPIOS_PER_SET; j++) { 1052 if (skip >> j & 1) { 1053 continue; 1054 } 1055 int group_idx = j / GPIOS_PER_GROUP; 1056 int pin_idx = j % GPIOS_PER_GROUP; 1057 const char *group = &props->group_label[group_idx][0]; 1058 char *name = g_strdup_printf("gpio%s%d", group, pin_idx); 1059 object_property_add(obj, name, "bool", aspeed_gpio_get_pin, 1060 aspeed_gpio_set_pin, NULL, NULL); 1061 g_free(name); 1062 } 1063 } 1064 } 1065 1066 static const VMStateDescription vmstate_gpio_regs = { 1067 .name = TYPE_ASPEED_GPIO"/regs", 1068 .version_id = 1, 1069 .minimum_version_id = 1, 1070 .fields = (VMStateField[]) { 1071 VMSTATE_UINT32(data_value, GPIOSets), 1072 VMSTATE_UINT32(data_read, GPIOSets), 1073 VMSTATE_UINT32(direction, GPIOSets), 1074 VMSTATE_UINT32(int_enable, GPIOSets), 1075 VMSTATE_UINT32(int_sens_0, GPIOSets), 1076 VMSTATE_UINT32(int_sens_1, GPIOSets), 1077 VMSTATE_UINT32(int_sens_2, GPIOSets), 1078 VMSTATE_UINT32(int_status, GPIOSets), 1079 VMSTATE_UINT32(reset_tol, GPIOSets), 1080 VMSTATE_UINT32(cmd_source_0, GPIOSets), 1081 VMSTATE_UINT32(cmd_source_1, GPIOSets), 1082 VMSTATE_UINT32(debounce_1, GPIOSets), 1083 VMSTATE_UINT32(debounce_2, GPIOSets), 1084 VMSTATE_UINT32(input_mask, GPIOSets), 1085 VMSTATE_END_OF_LIST(), 1086 } 1087 }; 1088 1089 static const VMStateDescription vmstate_aspeed_gpio = { 1090 .name = TYPE_ASPEED_GPIO, 1091 .version_id = 1, 1092 .minimum_version_id = 1, 1093 .fields = (VMStateField[]) { 1094 VMSTATE_STRUCT_ARRAY(sets, AspeedGPIOState, ASPEED_GPIO_MAX_NR_SETS, 1095 1, vmstate_gpio_regs, GPIOSets), 1096 VMSTATE_UINT32_ARRAY(debounce_regs, AspeedGPIOState, 1097 ASPEED_GPIO_NR_DEBOUNCE_REGS), 1098 VMSTATE_END_OF_LIST(), 1099 } 1100 }; 1101 1102 static void aspeed_gpio_class_init(ObjectClass *klass, void *data) 1103 { 1104 DeviceClass *dc = DEVICE_CLASS(klass); 1105 1106 dc->realize = aspeed_gpio_realize; 1107 dc->reset = aspeed_gpio_reset; 1108 dc->desc = "Aspeed GPIO Controller"; 1109 dc->vmsd = &vmstate_aspeed_gpio; 1110 } 1111 1112 static void aspeed_gpio_ast2400_class_init(ObjectClass *klass, void *data) 1113 { 1114 AspeedGPIOClass *agc = ASPEED_GPIO_CLASS(klass); 1115 1116 agc->props = ast2400_set_props; 1117 agc->nr_gpio_pins = 216; 1118 agc->nr_gpio_sets = 7; 1119 agc->reg_table = aspeed_3_3v_gpios; 1120 } 1121 1122 static void aspeed_gpio_2500_class_init(ObjectClass *klass, void *data) 1123 { 1124 AspeedGPIOClass *agc = ASPEED_GPIO_CLASS(klass); 1125 1126 agc->props = ast2500_set_props; 1127 agc->nr_gpio_pins = 228; 1128 agc->nr_gpio_sets = 8; 1129 agc->reg_table = aspeed_3_3v_gpios; 1130 } 1131 1132 static void aspeed_gpio_ast2600_3_3v_class_init(ObjectClass *klass, void *data) 1133 { 1134 AspeedGPIOClass *agc = ASPEED_GPIO_CLASS(klass); 1135 1136 agc->props = ast2600_3_3v_set_props; 1137 agc->nr_gpio_pins = 208; 1138 agc->nr_gpio_sets = 7; 1139 agc->reg_table = aspeed_3_3v_gpios; 1140 } 1141 1142 static void aspeed_gpio_ast2600_1_8v_class_init(ObjectClass *klass, void *data) 1143 { 1144 AspeedGPIOClass *agc = ASPEED_GPIO_CLASS(klass); 1145 1146 agc->props = ast2600_1_8v_set_props; 1147 agc->nr_gpio_pins = 36; 1148 agc->nr_gpio_sets = 2; 1149 agc->reg_table = aspeed_1_8v_gpios; 1150 } 1151 1152 static void aspeed_gpio_1030_class_init(ObjectClass *klass, void *data) 1153 { 1154 AspeedGPIOClass *agc = ASPEED_GPIO_CLASS(klass); 1155 1156 agc->props = ast1030_set_props; 1157 agc->nr_gpio_pins = 151; 1158 agc->nr_gpio_sets = 6; 1159 agc->reg_table = aspeed_3_3v_gpios; 1160 } 1161 1162 static const TypeInfo aspeed_gpio_info = { 1163 .name = TYPE_ASPEED_GPIO, 1164 .parent = TYPE_SYS_BUS_DEVICE, 1165 .instance_size = sizeof(AspeedGPIOState), 1166 .class_size = sizeof(AspeedGPIOClass), 1167 .class_init = aspeed_gpio_class_init, 1168 .abstract = true, 1169 }; 1170 1171 static const TypeInfo aspeed_gpio_ast2400_info = { 1172 .name = TYPE_ASPEED_GPIO "-ast2400", 1173 .parent = TYPE_ASPEED_GPIO, 1174 .class_init = aspeed_gpio_ast2400_class_init, 1175 .instance_init = aspeed_gpio_init, 1176 }; 1177 1178 static const TypeInfo aspeed_gpio_ast2500_info = { 1179 .name = TYPE_ASPEED_GPIO "-ast2500", 1180 .parent = TYPE_ASPEED_GPIO, 1181 .class_init = aspeed_gpio_2500_class_init, 1182 .instance_init = aspeed_gpio_init, 1183 }; 1184 1185 static const TypeInfo aspeed_gpio_ast2600_3_3v_info = { 1186 .name = TYPE_ASPEED_GPIO "-ast2600", 1187 .parent = TYPE_ASPEED_GPIO, 1188 .class_init = aspeed_gpio_ast2600_3_3v_class_init, 1189 .instance_init = aspeed_gpio_init, 1190 }; 1191 1192 static const TypeInfo aspeed_gpio_ast2600_1_8v_info = { 1193 .name = TYPE_ASPEED_GPIO "-ast2600-1_8v", 1194 .parent = TYPE_ASPEED_GPIO, 1195 .class_init = aspeed_gpio_ast2600_1_8v_class_init, 1196 .instance_init = aspeed_gpio_init, 1197 }; 1198 1199 static const TypeInfo aspeed_gpio_ast1030_info = { 1200 .name = TYPE_ASPEED_GPIO "-ast1030", 1201 .parent = TYPE_ASPEED_GPIO, 1202 .class_init = aspeed_gpio_1030_class_init, 1203 .instance_init = aspeed_gpio_init, 1204 }; 1205 1206 static void aspeed_gpio_register_types(void) 1207 { 1208 type_register_static(&aspeed_gpio_info); 1209 type_register_static(&aspeed_gpio_ast2400_info); 1210 type_register_static(&aspeed_gpio_ast2500_info); 1211 type_register_static(&aspeed_gpio_ast2600_3_3v_info); 1212 type_register_static(&aspeed_gpio_ast2600_1_8v_info); 1213 type_register_static(&aspeed_gpio_ast1030_info); 1214 } 1215 1216 type_init(aspeed_gpio_register_types); 1217