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
aspeed_evaluate_irq(GPIOSets * regs,int gpio_prev_high,int gpio)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
aspeed_gpio_set_idx(AspeedGPIOState * s,GPIOSets * regs)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
aspeed_gpio_update(AspeedGPIOState * s,GPIOSets * regs,uint32_t value,uint32_t mode_mask)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
aspeed_gpio_get_pin_level(AspeedGPIOState * s,uint32_t set_idx,uint32_t pin)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
aspeed_gpio_set_pin_level(AspeedGPIOState * s,uint32_t set_idx,uint32_t pin,bool level)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 */
update_value_control_source(GPIOSets * regs,uint32_t old_value,uint32_t value)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
aspeed_gpio_read(void * opaque,hwaddr offset,uint32_t size)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
aspeed_gpio_write_index_mode(void * opaque,hwaddr offset,uint64_t data,uint32_t size)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
aspeed_gpio_write(void * opaque,hwaddr offset,uint64_t data,uint32_t size)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
get_set_idx(AspeedGPIOState * s,const char * group,int * group_idx)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
aspeed_gpio_get_pin(Object * obj,Visitor * v,const char * name,void * opaque,Error ** errp)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
aspeed_gpio_set_pin(Object * obj,Visitor * v,const char * name,void * opaque,Error ** errp)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
aspeed_gpio_reset(DeviceState * dev)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
aspeed_gpio_realize(DeviceState * dev,Error ** errp)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
aspeed_gpio_init(Object * obj)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
aspeed_gpio_class_init(ObjectClass * klass,void * data)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 dc->reset = aspeed_gpio_reset;
1120 dc->desc = "Aspeed GPIO Controller";
1121 dc->vmsd = &vmstate_aspeed_gpio;
1122 }
1123
aspeed_gpio_ast2400_class_init(ObjectClass * klass,void * data)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
aspeed_gpio_2500_class_init(ObjectClass * klass,void * data)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
aspeed_gpio_ast2600_3_3v_class_init(ObjectClass * klass,void * data)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
aspeed_gpio_ast2600_1_8v_class_init(ObjectClass * klass,void * data)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
aspeed_gpio_1030_class_init(ObjectClass * klass,void * data)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
aspeed_gpio_register_types(void)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