diff options
Diffstat (limited to 'hw/gpio/aspeed_gpio.c')
| -rw-r--r-- | hw/gpio/aspeed_gpio.c | 427 |
1 files changed, 412 insertions, 15 deletions
diff --git a/hw/gpio/aspeed_gpio.c b/hw/gpio/aspeed_gpio.c index 71756664dd..a5b3f454e8 100644 --- a/hw/gpio/aspeed_gpio.c +++ b/hw/gpio/aspeed_gpio.c @@ -227,6 +227,38 @@ REG32(GPIO_INDEX_REG, 0x2AC) FIELD(GPIO_INDEX_REG, COMMAND_SRC_1, 21, 1) FIELD(GPIO_INDEX_REG, INPUT_MASK, 20, 1) +/* AST2700 GPIO Register Address Offsets */ +REG32(GPIO_2700_DEBOUNCE_TIME_1, 0x000) +REG32(GPIO_2700_DEBOUNCE_TIME_2, 0x004) +REG32(GPIO_2700_DEBOUNCE_TIME_3, 0x008) +REG32(GPIO_2700_INT_STATUS_1, 0x100) +REG32(GPIO_2700_INT_STATUS_2, 0x104) +REG32(GPIO_2700_INT_STATUS_3, 0x108) +REG32(GPIO_2700_INT_STATUS_4, 0x10C) +REG32(GPIO_2700_INT_STATUS_5, 0x110) +REG32(GPIO_2700_INT_STATUS_6, 0x114) +REG32(GPIO_2700_INT_STATUS_7, 0x118) +/* GPIOA0 - GPIOAA7 Control Register */ +REG32(GPIO_A0_CONTROL, 0x180) + SHARED_FIELD(GPIO_CONTROL_OUT_DATA, 0, 1) + SHARED_FIELD(GPIO_CONTROL_DIRECTION, 1, 1) + SHARED_FIELD(GPIO_CONTROL_INT_ENABLE, 2, 1) + SHARED_FIELD(GPIO_CONTROL_INT_SENS_0, 3, 1) + SHARED_FIELD(GPIO_CONTROL_INT_SENS_1, 4, 1) + SHARED_FIELD(GPIO_CONTROL_INT_SENS_2, 5, 1) + SHARED_FIELD(GPIO_CONTROL_RESET_TOLERANCE, 6, 1) + SHARED_FIELD(GPIO_CONTROL_DEBOUNCE_1, 7, 1) + SHARED_FIELD(GPIO_CONTROL_DEBOUNCE_2, 8, 1) + SHARED_FIELD(GPIO_CONTROL_INPUT_MASK, 9, 1) + SHARED_FIELD(GPIO_CONTROL_BLINK_COUNTER_1, 10, 1) + SHARED_FIELD(GPIO_CONTROL_BLINK_COUNTER_2, 11, 1) + SHARED_FIELD(GPIO_CONTROL_INT_STATUS, 12, 1) + SHARED_FIELD(GPIO_CONTROL_IN_DATA, 13, 1) + SHARED_FIELD(GPIO_CONTROL_RESERVED, 14, 18) +REG32(GPIO_AA7_CONTROL, 0x4DC) +#define GPIO_2700_MEM_SIZE 0x4E0 +#define GPIO_2700_REG_ARRAY_SIZE (GPIO_2700_MEM_SIZE >> 2) + static int aspeed_evaluate_irq(GPIOSets *regs, int gpio_prev_high, int gpio) { uint32_t falling_edge = 0, rising_edge = 0; @@ -340,7 +372,8 @@ static void aspeed_gpio_set_pin_level(AspeedGPIOState *s, uint32_t set_idx, value &= ~pin_mask; } - aspeed_gpio_update(s, &s->sets[set_idx], value, ~s->sets[set_idx].direction); + aspeed_gpio_update(s, &s->sets[set_idx], value, + ~s->sets[set_idx].direction); } /* @@ -629,7 +662,6 @@ static uint64_t aspeed_gpio_read(void *opaque, hwaddr offset, uint32_t size) static void aspeed_gpio_write_index_mode(void *opaque, hwaddr offset, uint64_t data, uint32_t size) { - AspeedGPIOState *s = ASPEED_GPIO(opaque); AspeedGPIOClass *agc = ASPEED_GPIO_GET_CLASS(s); const GPIOSetProperties *props; @@ -641,7 +673,7 @@ static void aspeed_gpio_write_index_mode(void *opaque, hwaddr offset, uint32_t pin_idx = reg_idx_number % ASPEED_GPIOS_PER_SET; uint32_t group_idx = pin_idx / GPIOS_PER_GROUP; uint32_t reg_value = 0; - uint32_t cleared; + uint32_t pending = 0; set = &s->sets[set_idx]; props = &agc->props[set_idx]; @@ -703,16 +735,23 @@ static void aspeed_gpio_write_index_mode(void *opaque, hwaddr offset, FIELD_EX32(data, GPIO_INDEX_REG, INT_SENS_2)); set->int_sens_2 = update_value_control_source(set, set->int_sens_2, reg_value); - /* set interrupt status */ - reg_value = set->int_status; - reg_value = deposit32(reg_value, pin_idx, 1, - FIELD_EX32(data, GPIO_INDEX_REG, INT_STATUS)); - cleared = ctpop32(reg_value & set->int_status); - if (s->pending && cleared) { - assert(s->pending >= cleared); - s->pending -= cleared; + /* interrupt status */ + if (FIELD_EX32(data, GPIO_INDEX_REG, INT_STATUS)) { + /* pending is either 1 or 0 for a 1-bit field */ + pending = extract32(set->int_status, pin_idx, 1); + + assert(s->pending >= pending); + + /* No change to s->pending if pending is 0 */ + s->pending -= pending; + + /* + * The write acknowledged the interrupt regardless of whether it + * was pending or not. The post-condition is that it mustn't be + * pending. Unconditionally clear the status bit. + */ + set->int_status = deposit32(set->int_status, pin_idx, 1, 0); } - set->int_status &= ~reg_value; break; case gpio_reg_idx_debounce: reg_value = set->debounce_1; @@ -963,7 +1002,317 @@ static void aspeed_gpio_set_pin(Object *obj, Visitor *v, const char *name, aspeed_gpio_set_pin_level(s, set_idx, pin, level); } -/****************** Setup functions ******************/ +static uint64_t aspeed_gpio_2700_read_control_reg(AspeedGPIOState *s, + uint32_t pin) +{ + AspeedGPIOClass *agc = ASPEED_GPIO_GET_CLASS(s); + GPIOSets *set; + uint64_t value = 0; + uint32_t set_idx; + uint32_t pin_idx; + + set_idx = pin / ASPEED_GPIOS_PER_SET; + pin_idx = pin % ASPEED_GPIOS_PER_SET; + + if (set_idx >= agc->nr_gpio_sets) { + qemu_log_mask(LOG_GUEST_ERROR, "%s: set index: %d, out of bounds\n", + __func__, set_idx); + return 0; + } + + set = &s->sets[set_idx]; + value = SHARED_FIELD_DP32(value, GPIO_CONTROL_OUT_DATA, + extract32(set->data_read, pin_idx, 1)); + value = SHARED_FIELD_DP32(value, GPIO_CONTROL_DIRECTION, + extract32(set->direction, pin_idx, 1)); + value = SHARED_FIELD_DP32(value, GPIO_CONTROL_INT_ENABLE, + extract32(set->int_enable, pin_idx, 1)); + value = SHARED_FIELD_DP32(value, GPIO_CONTROL_INT_SENS_0, + extract32(set->int_sens_0, pin_idx, 1)); + value = SHARED_FIELD_DP32(value, GPIO_CONTROL_INT_SENS_1, + extract32(set->int_sens_1, pin_idx, 1)); + value = SHARED_FIELD_DP32(value, GPIO_CONTROL_INT_SENS_2, + extract32(set->int_sens_2, pin_idx, 1)); + value = SHARED_FIELD_DP32(value, GPIO_CONTROL_RESET_TOLERANCE, + extract32(set->reset_tol, pin_idx, 1)); + value = SHARED_FIELD_DP32(value, GPIO_CONTROL_DEBOUNCE_1, + extract32(set->debounce_1, pin_idx, 1)); + value = SHARED_FIELD_DP32(value, GPIO_CONTROL_DEBOUNCE_2, + extract32(set->debounce_2, pin_idx, 1)); + value = SHARED_FIELD_DP32(value, GPIO_CONTROL_INPUT_MASK, + extract32(set->input_mask, pin_idx, 1)); + value = SHARED_FIELD_DP32(value, GPIO_CONTROL_INT_STATUS, + extract32(set->int_status, pin_idx, 1)); + value = SHARED_FIELD_DP32(value, GPIO_CONTROL_IN_DATA, + extract32(set->data_value, pin_idx, 1)); + return value; +} + +static void aspeed_gpio_2700_write_control_reg(AspeedGPIOState *s, + uint32_t pin, uint64_t data) +{ + AspeedGPIOClass *agc = ASPEED_GPIO_GET_CLASS(s); + const GPIOSetProperties *props; + GPIOSets *set; + uint32_t set_idx; + uint32_t pin_idx; + uint32_t group_value = 0; + uint32_t pending = 0; + + set_idx = pin / ASPEED_GPIOS_PER_SET; + pin_idx = pin % ASPEED_GPIOS_PER_SET; + + if (set_idx >= agc->nr_gpio_sets) { + qemu_log_mask(LOG_GUEST_ERROR, "%s: set index: %d, out of bounds\n", + __func__, set_idx); + return; + } + + set = &s->sets[set_idx]; + props = &agc->props[set_idx]; + + /* direction */ + group_value = set->direction; + group_value = deposit32(group_value, pin_idx, 1, + SHARED_FIELD_EX32(data, GPIO_CONTROL_DIRECTION)); + /* + * where data is the value attempted to be written to the pin: + * pin type | input mask | output mask | expected value + * ------------------------------------------------------------ + * bidirectional | 1 | 1 | data + * input only | 1 | 0 | 0 + * output only | 0 | 1 | 1 + * no pin | 0 | 0 | 0 + * + * which is captured by: + * data = ( data | ~input) & output; + */ + group_value = (group_value | ~props->input) & props->output; + set->direction = update_value_control_source(set, set->direction, + group_value); + + /* out data */ + group_value = set->data_read; + group_value = deposit32(group_value, pin_idx, 1, + SHARED_FIELD_EX32(data, GPIO_CONTROL_OUT_DATA)); + group_value &= props->output; + group_value = update_value_control_source(set, set->data_read, + group_value); + set->data_read = group_value; + + /* interrupt enable */ + group_value = set->int_enable; + group_value = deposit32(group_value, pin_idx, 1, + SHARED_FIELD_EX32(data, GPIO_CONTROL_INT_ENABLE)); + set->int_enable = update_value_control_source(set, set->int_enable, + group_value); + + /* interrupt sensitivity type 0 */ + group_value = set->int_sens_0; + group_value = deposit32(group_value, pin_idx, 1, + SHARED_FIELD_EX32(data, GPIO_CONTROL_INT_SENS_0)); + set->int_sens_0 = update_value_control_source(set, set->int_sens_0, + group_value); + + /* interrupt sensitivity type 1 */ + group_value = set->int_sens_1; + group_value = deposit32(group_value, pin_idx, 1, + SHARED_FIELD_EX32(data, GPIO_CONTROL_INT_SENS_1)); + set->int_sens_1 = update_value_control_source(set, set->int_sens_1, + group_value); + + /* interrupt sensitivity type 2 */ + group_value = set->int_sens_2; + group_value = deposit32(group_value, pin_idx, 1, + SHARED_FIELD_EX32(data, GPIO_CONTROL_INT_SENS_2)); + set->int_sens_2 = update_value_control_source(set, set->int_sens_2, + group_value); + + /* reset tolerance enable */ + group_value = set->reset_tol; + group_value = deposit32(group_value, pin_idx, 1, + SHARED_FIELD_EX32(data, GPIO_CONTROL_RESET_TOLERANCE)); + set->reset_tol = update_value_control_source(set, set->reset_tol, + group_value); + + /* debounce 1 */ + group_value = set->debounce_1; + group_value = deposit32(group_value, pin_idx, 1, + SHARED_FIELD_EX32(data, GPIO_CONTROL_DEBOUNCE_1)); + set->debounce_1 = update_value_control_source(set, set->debounce_1, + group_value); + + /* debounce 2 */ + group_value = set->debounce_2; + group_value = deposit32(group_value, pin_idx, 1, + SHARED_FIELD_EX32(data, GPIO_CONTROL_DEBOUNCE_2)); + set->debounce_2 = update_value_control_source(set, set->debounce_2, + group_value); + + /* input mask */ + group_value = set->input_mask; + group_value = deposit32(group_value, pin_idx, 1, + SHARED_FIELD_EX32(data, GPIO_CONTROL_INPUT_MASK)); + /* + * feeds into interrupt generation + * 0: read from data value reg will be updated + * 1: read from data value reg will not be updated + */ + set->input_mask = group_value & props->input; + + /* blink counter 1 */ + /* blink counter 2 */ + /* unimplement */ + + /* interrupt status */ + if (SHARED_FIELD_EX32(data, GPIO_CONTROL_INT_STATUS)) { + /* pending is either 1 or 0 for a 1-bit field */ + pending = extract32(set->int_status, pin_idx, 1); + + assert(s->pending >= pending); + + /* No change to s->pending if pending is 0 */ + s->pending -= pending; + + /* + * The write acknowledged the interrupt regardless of whether it + * was pending or not. The post-condition is that it mustn't be + * pending. Unconditionally clear the status bit. + */ + set->int_status = deposit32(set->int_status, pin_idx, 1, 0); + } + + aspeed_gpio_update(s, set, set->data_value, UINT32_MAX); + return; +} + +static uint64_t aspeed_gpio_2700_read(void *opaque, hwaddr offset, + uint32_t size) +{ + AspeedGPIOState *s = ASPEED_GPIO(opaque); + AspeedGPIOClass *agc = ASPEED_GPIO_GET_CLASS(s); + GPIOSets *set; + uint64_t value; + uint64_t reg; + uint32_t pin; + uint32_t idx; + + reg = offset >> 2; + + if (reg >= agc->reg_table_count) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: offset 0x%" PRIx64 " out of bounds\n", + __func__, offset); + return 0; + } + + switch (reg) { + case R_GPIO_2700_DEBOUNCE_TIME_1 ... R_GPIO_2700_DEBOUNCE_TIME_3: + idx = reg - R_GPIO_2700_DEBOUNCE_TIME_1; + + if (idx >= ASPEED_GPIO_NR_DEBOUNCE_REGS) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: debounce index: %d, out of bounds\n", + __func__, idx); + return 0; + } + + value = (uint64_t) s->debounce_regs[idx]; + break; + case R_GPIO_2700_INT_STATUS_1 ... R_GPIO_2700_INT_STATUS_7: + idx = reg - R_GPIO_2700_INT_STATUS_1; + + if (idx >= agc->nr_gpio_sets) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: interrupt status index: %d, out of bounds\n", + __func__, idx); + return 0; + } + + set = &s->sets[idx]; + value = (uint64_t) set->int_status; + break; + case R_GPIO_A0_CONTROL ... R_GPIO_AA7_CONTROL: + pin = reg - R_GPIO_A0_CONTROL; + + if (pin >= agc->nr_gpio_pins) { + qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid pin number: %d\n", + __func__, pin); + return 0; + } + + value = aspeed_gpio_2700_read_control_reg(s, pin); + break; + default: + qemu_log_mask(LOG_GUEST_ERROR, "%s: no getter for offset 0x%" + PRIx64"\n", __func__, offset); + return 0; + } + + trace_aspeed_gpio_read(offset, value); + return value; +} + +static void aspeed_gpio_2700_write(void *opaque, hwaddr offset, + uint64_t data, uint32_t size) +{ + AspeedGPIOState *s = ASPEED_GPIO(opaque); + AspeedGPIOClass *agc = ASPEED_GPIO_GET_CLASS(s); + uint64_t reg; + uint32_t pin; + uint32_t idx; + + trace_aspeed_gpio_write(offset, data); + + reg = offset >> 2; + + if (reg >= agc->reg_table_count) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: offset 0x%" PRIx64 " out of bounds\n", + __func__, offset); + return; + } + + switch (reg) { + case R_GPIO_2700_DEBOUNCE_TIME_1 ... R_GPIO_2700_DEBOUNCE_TIME_3: + idx = reg - R_GPIO_2700_DEBOUNCE_TIME_1; + + if (idx >= ASPEED_GPIO_NR_DEBOUNCE_REGS) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: debounce index: %d out of bounds\n", + __func__, idx); + return; + } + + s->debounce_regs[idx] = (uint32_t) data; + break; + case R_GPIO_A0_CONTROL ... R_GPIO_AA7_CONTROL: + pin = reg - R_GPIO_A0_CONTROL; + + if (pin >= agc->nr_gpio_pins) { + qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid pin number: %d\n", + __func__, pin); + return; + } + + if (SHARED_FIELD_EX32(data, GPIO_CONTROL_RESERVED)) { + qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid reserved data: 0x%" + PRIx64"\n", __func__, data); + return; + } + + aspeed_gpio_2700_write_control_reg(s, pin, data); + break; + default: + qemu_log_mask(LOG_GUEST_ERROR, "%s: no setter for offset 0x%" + PRIx64"\n", __func__, offset); + break; + } + + return; +} + +/* Setup functions */ static const GPIOSetProperties ast2400_set_props[ASPEED_GPIO_MAX_NR_SETS] = { [0] = {0xffffffff, 0xffffffff, {"A", "B", "C", "D"} }, [1] = {0xffffffff, 0xffffffff, {"E", "F", "G", "H"} }, @@ -1009,6 +1358,16 @@ static GPIOSetProperties ast1030_set_props[ASPEED_GPIO_MAX_NR_SETS] = { [5] = {0x000000ff, 0x00000000, {"U"} }, }; +static GPIOSetProperties ast2700_set_props[ASPEED_GPIO_MAX_NR_SETS] = { + [0] = {0xffffffff, 0xffffffff, {"A", "B", "C", "D"} }, + [1] = {0x0fffffff, 0x0fffffff, {"E", "F", "G", "H"} }, + [2] = {0xffffffff, 0xffffffff, {"I", "J", "K", "L"} }, + [3] = {0xffffffff, 0xffffffff, {"M", "N", "O", "P"} }, + [4] = {0xffffffff, 0xffffffff, {"Q", "R", "S", "T"} }, + [5] = {0xffffffff, 0xffffffff, {"U", "V", "W", "X"} }, + [6] = {0x00ffffff, 0x00ffffff, {"Y", "Z", "AA"} }, +}; + static const MemoryRegionOps aspeed_gpio_ops = { .read = aspeed_gpio_read, .write = aspeed_gpio_write, @@ -1017,6 +1376,14 @@ static const MemoryRegionOps aspeed_gpio_ops = { .valid.max_access_size = 4, }; +static const MemoryRegionOps aspeed_gpio_2700_ops = { + .read = aspeed_gpio_2700_read, + .write = aspeed_gpio_2700_write, + .endianness = DEVICE_LITTLE_ENDIAN, + .valid.min_access_size = 4, + .valid.max_access_size = 4, +}; + static void aspeed_gpio_reset(DeviceState *dev) { AspeedGPIOState *s = ASPEED_GPIO(dev); @@ -1046,8 +1413,8 @@ static void aspeed_gpio_realize(DeviceState *dev, Error **errp) } } - memory_region_init_io(&s->iomem, OBJECT(s), &aspeed_gpio_ops, s, - TYPE_ASPEED_GPIO, 0x800); + memory_region_init_io(&s->iomem, OBJECT(s), agc->reg_ops, s, + TYPE_ASPEED_GPIO, agc->mem_size); sysbus_init_mmio(sbd, &s->iomem); } @@ -1130,6 +1497,8 @@ static void aspeed_gpio_ast2400_class_init(ObjectClass *klass, void *data) agc->nr_gpio_sets = 7; agc->reg_table = aspeed_3_3v_gpios; agc->reg_table_count = GPIO_3_3V_REG_ARRAY_SIZE; + agc->mem_size = 0x1000; + agc->reg_ops = &aspeed_gpio_ops; } static void aspeed_gpio_2500_class_init(ObjectClass *klass, void *data) @@ -1141,6 +1510,8 @@ static void aspeed_gpio_2500_class_init(ObjectClass *klass, void *data) agc->nr_gpio_sets = 8; agc->reg_table = aspeed_3_3v_gpios; agc->reg_table_count = GPIO_3_3V_REG_ARRAY_SIZE; + agc->mem_size = 0x1000; + agc->reg_ops = &aspeed_gpio_ops; } static void aspeed_gpio_ast2600_3_3v_class_init(ObjectClass *klass, void *data) @@ -1152,6 +1523,8 @@ static void aspeed_gpio_ast2600_3_3v_class_init(ObjectClass *klass, void *data) agc->nr_gpio_sets = 7; agc->reg_table = aspeed_3_3v_gpios; agc->reg_table_count = GPIO_3_3V_REG_ARRAY_SIZE; + agc->mem_size = 0x800; + agc->reg_ops = &aspeed_gpio_ops; } static void aspeed_gpio_ast2600_1_8v_class_init(ObjectClass *klass, void *data) @@ -1163,6 +1536,8 @@ static void aspeed_gpio_ast2600_1_8v_class_init(ObjectClass *klass, void *data) agc->nr_gpio_sets = 2; agc->reg_table = aspeed_1_8v_gpios; agc->reg_table_count = GPIO_1_8V_REG_ARRAY_SIZE; + agc->mem_size = 0x800; + agc->reg_ops = &aspeed_gpio_ops; } static void aspeed_gpio_1030_class_init(ObjectClass *klass, void *data) @@ -1174,6 +1549,20 @@ static void aspeed_gpio_1030_class_init(ObjectClass *klass, void *data) agc->nr_gpio_sets = 6; agc->reg_table = aspeed_3_3v_gpios; agc->reg_table_count = GPIO_3_3V_REG_ARRAY_SIZE; + agc->mem_size = 0x1000; + agc->reg_ops = &aspeed_gpio_ops; +} + +static void aspeed_gpio_2700_class_init(ObjectClass *klass, void *data) +{ + AspeedGPIOClass *agc = ASPEED_GPIO_CLASS(klass); + + agc->props = ast2700_set_props; + agc->nr_gpio_pins = 216; + agc->nr_gpio_sets = 7; + agc->reg_table_count = GPIO_2700_REG_ARRAY_SIZE; + agc->mem_size = 0x1000; + agc->reg_ops = &aspeed_gpio_2700_ops; } static const TypeInfo aspeed_gpio_info = { @@ -1220,6 +1609,13 @@ static const TypeInfo aspeed_gpio_ast1030_info = { .instance_init = aspeed_gpio_init, }; +static const TypeInfo aspeed_gpio_ast2700_info = { + .name = TYPE_ASPEED_GPIO "-ast2700", + .parent = TYPE_ASPEED_GPIO, + .class_init = aspeed_gpio_2700_class_init, + .instance_init = aspeed_gpio_init, +}; + static void aspeed_gpio_register_types(void) { type_register_static(&aspeed_gpio_info); @@ -1228,6 +1624,7 @@ static void aspeed_gpio_register_types(void) type_register_static(&aspeed_gpio_ast2600_3_3v_info); type_register_static(&aspeed_gpio_ast2600_1_8v_info); type_register_static(&aspeed_gpio_ast1030_info); + type_register_static(&aspeed_gpio_ast2700_info); } type_init(aspeed_gpio_register_types); |