diff options
Diffstat (limited to 'hw/gpio/aspeed_gpio.c')
| -rw-r--r-- | hw/gpio/aspeed_gpio.c | 257 |
1 files changed, 238 insertions, 19 deletions
diff --git a/hw/gpio/aspeed_gpio.c b/hw/gpio/aspeed_gpio.c index 9b736e7a9f..a62a673857 100644 --- a/hw/gpio/aspeed_gpio.c +++ b/hw/gpio/aspeed_gpio.c @@ -15,6 +15,8 @@ #include "qapi/visitor.h" #include "hw/irq.h" #include "migration/vmstate.h" +#include "trace.h" +#include "hw/registerfields.h" #define GPIOS_PER_GROUP 8 @@ -203,6 +205,28 @@ #define GPIO_1_8V_MEM_SIZE 0x1D8 #define GPIO_1_8V_REG_ARRAY_SIZE (GPIO_1_8V_MEM_SIZE >> 2) +/* + * GPIO index mode support + * It only supports write operation + */ +REG32(GPIO_INDEX_REG, 0x2AC) + FIELD(GPIO_INDEX_REG, NUMBER, 0, 8) + FIELD(GPIO_INDEX_REG, COMMAND, 12, 1) + FIELD(GPIO_INDEX_REG, TYPE, 16, 4) + FIELD(GPIO_INDEX_REG, DATA_VALUE, 20, 1) + FIELD(GPIO_INDEX_REG, DIRECTION, 20, 1) + FIELD(GPIO_INDEX_REG, INT_ENABLE, 20, 1) + FIELD(GPIO_INDEX_REG, INT_SENS_0, 21, 1) + FIELD(GPIO_INDEX_REG, INT_SENS_1, 22, 1) + FIELD(GPIO_INDEX_REG, INT_SENS_2, 23, 1) + FIELD(GPIO_INDEX_REG, INT_STATUS, 24, 1) + FIELD(GPIO_INDEX_REG, DEBOUNCE_1, 20, 1) + FIELD(GPIO_INDEX_REG, DEBOUNCE_2, 21, 1) + FIELD(GPIO_INDEX_REG, RESET_TOLERANT, 20, 1) + FIELD(GPIO_INDEX_REG, COMMAND_SRC_0, 20, 1) + FIELD(GPIO_INDEX_REG, COMMAND_SRC_1, 21, 1) + FIELD(GPIO_INDEX_REG, INPUT_MASK, 20, 1) + static int aspeed_evaluate_irq(GPIOSets *regs, int gpio_prev_high, int gpio) { uint32_t falling_edge = 0, rising_edge = 0; @@ -523,55 +547,214 @@ static uint64_t aspeed_gpio_read(void *opaque, hwaddr offset, uint32_t size) uint64_t idx = -1; const AspeedGPIOReg *reg; GPIOSets *set; + uint32_t value = 0; + uint64_t debounce_value; idx = offset >> 2; if (idx >= GPIO_DEBOUNCE_TIME_1 && idx <= GPIO_DEBOUNCE_TIME_3) { idx -= GPIO_DEBOUNCE_TIME_1; - return (uint64_t) s->debounce_regs[idx]; + debounce_value = (uint64_t) s->debounce_regs[idx]; + trace_aspeed_gpio_read(offset, debounce_value); + return debounce_value; } reg = &agc->reg_table[idx]; if (reg->set_idx >= agc->nr_gpio_sets) { qemu_log_mask(LOG_GUEST_ERROR, "%s: no getter for offset 0x%" - HWADDR_PRIx"\n", __func__, offset); + PRIx64"\n", __func__, offset); return 0; } set = &s->sets[reg->set_idx]; switch (reg->type) { case gpio_reg_data_value: - return set->data_value; + value = set->data_value; + break; case gpio_reg_direction: - return set->direction; + value = set->direction; + break; case gpio_reg_int_enable: - return set->int_enable; + value = set->int_enable; + break; case gpio_reg_int_sens_0: - return set->int_sens_0; + value = set->int_sens_0; + break; case gpio_reg_int_sens_1: - return set->int_sens_1; + value = set->int_sens_1; + break; case gpio_reg_int_sens_2: - return set->int_sens_2; + value = set->int_sens_2; + break; case gpio_reg_int_status: - return set->int_status; + value = set->int_status; + break; case gpio_reg_reset_tolerant: - return set->reset_tol; + value = set->reset_tol; + break; case gpio_reg_debounce_1: - return set->debounce_1; + value = set->debounce_1; + break; case gpio_reg_debounce_2: - return set->debounce_2; + value = set->debounce_2; + break; case gpio_reg_cmd_source_0: - return set->cmd_source_0; + value = set->cmd_source_0; + break; case gpio_reg_cmd_source_1: - return set->cmd_source_1; + value = set->cmd_source_1; + break; case gpio_reg_data_read: - return set->data_read; + value = set->data_read; + break; case gpio_reg_input_mask: - return set->input_mask; + value = set->input_mask; + break; default: qemu_log_mask(LOG_GUEST_ERROR, "%s: no getter for offset 0x%" - HWADDR_PRIx"\n", __func__, offset); + PRIx64"\n", __func__, offset); return 0; } + + trace_aspeed_gpio_read(offset, value); + return value; +} + +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; + GPIOSets *set; + uint32_t reg_idx_number = FIELD_EX32(data, GPIO_INDEX_REG, NUMBER); + uint32_t reg_idx_type = FIELD_EX32(data, GPIO_INDEX_REG, TYPE); + uint32_t reg_idx_command = FIELD_EX32(data, GPIO_INDEX_REG, COMMAND); + uint32_t set_idx = reg_idx_number / ASPEED_GPIOS_PER_SET; + 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; + + set = &s->sets[set_idx]; + props = &agc->props[set_idx]; + + if (reg_idx_command) + qemu_log_mask(LOG_GUEST_ERROR, "%s: offset 0x%" PRIx64 "data 0x%" + PRIx64 "index mode wrong command 0x%x\n", + __func__, offset, data, reg_idx_command); + + switch (reg_idx_type) { + case gpio_reg_idx_data: + reg_value = set->data_read; + reg_value = deposit32(reg_value, pin_idx, 1, + FIELD_EX32(data, GPIO_INDEX_REG, DATA_VALUE)); + reg_value &= props->output; + reg_value = update_value_control_source(set, set->data_value, + reg_value); + set->data_read = reg_value; + aspeed_gpio_update(s, set, reg_value); + return; + case gpio_reg_idx_direction: + reg_value = set->direction; + reg_value = deposit32(reg_value, pin_idx, 1, + FIELD_EX32(data, GPIO_INDEX_REG, 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; + */ + reg_value = (reg_value | ~props->input) & props->output; + set->direction = update_value_control_source(set, set->direction, + reg_value); + break; + case gpio_reg_idx_interrupt: + reg_value = set->int_enable; + reg_value = deposit32(reg_value, pin_idx, 1, + FIELD_EX32(data, GPIO_INDEX_REG, INT_ENABLE)); + set->int_enable = update_value_control_source(set, set->int_enable, + reg_value); + reg_value = set->int_sens_0; + reg_value = deposit32(reg_value, pin_idx, 1, + FIELD_EX32(data, GPIO_INDEX_REG, INT_SENS_0)); + set->int_sens_0 = update_value_control_source(set, set->int_sens_0, + reg_value); + reg_value = set->int_sens_1; + reg_value = deposit32(reg_value, pin_idx, 1, + FIELD_EX32(data, GPIO_INDEX_REG, INT_SENS_1)); + set->int_sens_1 = update_value_control_source(set, set->int_sens_1, + reg_value); + reg_value = set->int_sens_2; + reg_value = deposit32(reg_value, pin_idx, 1, + 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; + } + set->int_status &= ~reg_value; + break; + case gpio_reg_idx_debounce: + reg_value = set->debounce_1; + reg_value = deposit32(reg_value, pin_idx, 1, + FIELD_EX32(data, GPIO_INDEX_REG, DEBOUNCE_1)); + set->debounce_1 = update_value_control_source(set, set->debounce_1, + reg_value); + reg_value = set->debounce_2; + reg_value = deposit32(reg_value, pin_idx, 1, + FIELD_EX32(data, GPIO_INDEX_REG, DEBOUNCE_2)); + set->debounce_2 = update_value_control_source(set, set->debounce_2, + reg_value); + return; + case gpio_reg_idx_tolerance: + reg_value = set->reset_tol; + reg_value = deposit32(reg_value, pin_idx, 1, + FIELD_EX32(data, GPIO_INDEX_REG, RESET_TOLERANT)); + set->reset_tol = update_value_control_source(set, set->reset_tol, + reg_value); + return; + case gpio_reg_idx_cmd_src: + reg_value = set->cmd_source_0; + reg_value = deposit32(reg_value, GPIOS_PER_GROUP * group_idx, 1, + FIELD_EX32(data, GPIO_INDEX_REG, COMMAND_SRC_0)); + set->cmd_source_0 = reg_value & ASPEED_CMD_SRC_MASK; + reg_value = set->cmd_source_1; + reg_value = deposit32(reg_value, GPIOS_PER_GROUP * group_idx, 1, + FIELD_EX32(data, GPIO_INDEX_REG, COMMAND_SRC_1)); + set->cmd_source_1 = reg_value & ASPEED_CMD_SRC_MASK; + return; + case gpio_reg_idx_input_mask: + reg_value = set->input_mask; + reg_value = deposit32(reg_value, pin_idx, 1, + FIELD_EX32(data, GPIO_INDEX_REG, 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 = reg_value & props->input; + break; + default: + qemu_log_mask(LOG_GUEST_ERROR, "%s: offset 0x%" PRIx64 "data 0x%" + PRIx64 "index mode wrong type 0x%x\n", + __func__, offset, data, reg_idx_type); + return; + } + aspeed_gpio_update(s, set, set->data_value); + return; } static void aspeed_gpio_write(void *opaque, hwaddr offset, uint64_t data, @@ -585,7 +768,16 @@ static void aspeed_gpio_write(void *opaque, hwaddr offset, uint64_t data, GPIOSets *set; uint32_t cleared; + trace_aspeed_gpio_write(offset, data); + idx = offset >> 2; + + /* check gpio index mode */ + if (idx == R_GPIO_INDEX_REG) { + aspeed_gpio_write_index_mode(opaque, offset, data, size); + return; + } + if (idx >= GPIO_DEBOUNCE_TIME_1 && idx <= GPIO_DEBOUNCE_TIME_3) { idx -= GPIO_DEBOUNCE_TIME_1; s->debounce_regs[idx] = (uint32_t) data; @@ -595,7 +787,7 @@ static void aspeed_gpio_write(void *opaque, hwaddr offset, uint64_t data, reg = &agc->reg_table[idx]; if (reg->set_idx >= agc->nr_gpio_sets) { qemu_log_mask(LOG_GUEST_ERROR, "%s: no setter for offset 0x%" - HWADDR_PRIx"\n", __func__, offset); + PRIx64"\n", __func__, offset); return; } @@ -680,7 +872,7 @@ static void aspeed_gpio_write(void *opaque, hwaddr offset, uint64_t data, break; default: qemu_log_mask(LOG_GUEST_ERROR, "%s: no setter for offset 0x%" - HWADDR_PRIx"\n", __func__, offset); + PRIx64"\n", __func__, offset); return; } aspeed_gpio_update(s, set, set->data_value); @@ -795,6 +987,15 @@ static GPIOSetProperties ast2600_1_8v_set_props[ASPEED_GPIO_MAX_NR_SETS] = { [1] = {0x0000000f, 0x0000000f, {"18E"} }, }; +static GPIOSetProperties ast1030_set_props[ASPEED_GPIO_MAX_NR_SETS] = { + [0] = {0xffffffff, 0xffffffff, {"A", "B", "C", "D"} }, + [1] = {0xffffffff, 0xffffffff, {"E", "F", "G", "H"} }, + [2] = {0xffffffff, 0xffffffff, {"I", "J", "K", "L"} }, + [3] = {0xffffff3f, 0xffffff3f, {"M", "N", "O", "P"} }, + [4] = {0xff060c1f, 0x00060c1f, {"Q", "R", "S", "T"} }, + [5] = {0x000000ff, 0x00000000, {"U"} }, +}; + static const MemoryRegionOps aspeed_gpio_ops = { .read = aspeed_gpio_read, .write = aspeed_gpio_write, @@ -947,6 +1148,16 @@ static void aspeed_gpio_ast2600_1_8v_class_init(ObjectClass *klass, void *data) agc->reg_table = aspeed_1_8v_gpios; } +static void aspeed_gpio_1030_class_init(ObjectClass *klass, void *data) +{ + AspeedGPIOClass *agc = ASPEED_GPIO_CLASS(klass); + + agc->props = ast1030_set_props; + agc->nr_gpio_pins = 151; + agc->nr_gpio_sets = 6; + agc->reg_table = aspeed_3_3v_gpios; +} + static const TypeInfo aspeed_gpio_info = { .name = TYPE_ASPEED_GPIO, .parent = TYPE_SYS_BUS_DEVICE, @@ -984,6 +1195,13 @@ static const TypeInfo aspeed_gpio_ast2600_1_8v_info = { .instance_init = aspeed_gpio_init, }; +static const TypeInfo aspeed_gpio_ast1030_info = { + .name = TYPE_ASPEED_GPIO "-ast1030", + .parent = TYPE_ASPEED_GPIO, + .class_init = aspeed_gpio_1030_class_init, + .instance_init = aspeed_gpio_init, +}; + static void aspeed_gpio_register_types(void) { type_register_static(&aspeed_gpio_info); @@ -991,6 +1209,7 @@ static void aspeed_gpio_register_types(void) type_register_static(&aspeed_gpio_ast2500_info); 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_init(aspeed_gpio_register_types); |