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qemu/hw/gpio/aspeed_gpio.c
Peter Delevoryas 1f30db922c hw/gpio/aspeed: Don't let guests modify input pins 
Up until now, guests could modify input pins by overwriting the data
value register. The guest OS should only be allowed to modify output pin
values, and the QOM property setter should only be permitted to modify
input pins.

This change also updates the gpio input pin test to match this
expectation.

Andrew suggested this particularly refactoring here:

    https://lore.kernel.org/qemu-devel/23523aa1-ba81-412b-92cc-8174faba3612@www.fastmail.com/

Suggested-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Peter Delevoryas <peter@pjd.dev>
Fixes: 4b7f956862 ("hw/gpio: Add basic Aspeed GPIO model for AST2400 and AST2500")
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20220712023219.41065-3-peter@pjd.dev>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
2022-07-14 16:24:38 +02:00

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/*
* ASPEED GPIO Controller
*
* Copyright (C) 2017-2019 IBM Corp.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "qemu/osdep.h"
#include "qemu/host-utils.h"
#include "qemu/log.h"
#include "hw/gpio/aspeed_gpio.h"
#include "hw/misc/aspeed_scu.h"
#include "qapi/error.h"
#include "qapi/visitor.h"
#include "hw/irq.h"
#include "migration/vmstate.h"
#include "trace.h"
#include "hw/registerfields.h"
#define GPIOS_PER_GROUP 8
/* GPIO Source Types */
#define ASPEED_CMD_SRC_MASK 0x01010101
#define ASPEED_SOURCE_ARM 0
#define ASPEED_SOURCE_LPC 1
#define ASPEED_SOURCE_COPROCESSOR 2
#define ASPEED_SOURCE_RESERVED 3
/* GPIO Interrupt Triggers */
/*
* For each set of gpios there are three sensitivity registers that control
* the interrupt trigger mode.
*
* | 2 | 1 | 0 | trigger mode
* -----------------------------
* | 0 | 0 | 0 | falling-edge
* | 0 | 0 | 1 | rising-edge
* | 0 | 1 | 0 | level-low
* | 0 | 1 | 1 | level-high
* | 1 | X | X | dual-edge
*/
#define ASPEED_FALLING_EDGE 0
#define ASPEED_RISING_EDGE 1
#define ASPEED_LEVEL_LOW 2
#define ASPEED_LEVEL_HIGH 3
#define ASPEED_DUAL_EDGE 4
/* GPIO Register Address Offsets */
#define GPIO_ABCD_DATA_VALUE (0x000 >> 2)
#define GPIO_ABCD_DIRECTION (0x004 >> 2)
#define GPIO_ABCD_INT_ENABLE (0x008 >> 2)
#define GPIO_ABCD_INT_SENS_0 (0x00C >> 2)
#define GPIO_ABCD_INT_SENS_1 (0x010 >> 2)
#define GPIO_ABCD_INT_SENS_2 (0x014 >> 2)
#define GPIO_ABCD_INT_STATUS (0x018 >> 2)
#define GPIO_ABCD_RESET_TOLERANT (0x01C >> 2)
#define GPIO_EFGH_DATA_VALUE (0x020 >> 2)
#define GPIO_EFGH_DIRECTION (0x024 >> 2)
#define GPIO_EFGH_INT_ENABLE (0x028 >> 2)
#define GPIO_EFGH_INT_SENS_0 (0x02C >> 2)
#define GPIO_EFGH_INT_SENS_1 (0x030 >> 2)
#define GPIO_EFGH_INT_SENS_2 (0x034 >> 2)
#define GPIO_EFGH_INT_STATUS (0x038 >> 2)
#define GPIO_EFGH_RESET_TOLERANT (0x03C >> 2)
#define GPIO_ABCD_DEBOUNCE_1 (0x040 >> 2)
#define GPIO_ABCD_DEBOUNCE_2 (0x044 >> 2)
#define GPIO_EFGH_DEBOUNCE_1 (0x048 >> 2)
#define GPIO_EFGH_DEBOUNCE_2 (0x04C >> 2)
#define GPIO_DEBOUNCE_TIME_1 (0x050 >> 2)
#define GPIO_DEBOUNCE_TIME_2 (0x054 >> 2)
#define GPIO_DEBOUNCE_TIME_3 (0x058 >> 2)
#define GPIO_ABCD_COMMAND_SRC_0 (0x060 >> 2)
#define GPIO_ABCD_COMMAND_SRC_1 (0x064 >> 2)
#define GPIO_EFGH_COMMAND_SRC_0 (0x068 >> 2)
#define GPIO_EFGH_COMMAND_SRC_1 (0x06C >> 2)
#define GPIO_IJKL_DATA_VALUE (0x070 >> 2)
#define GPIO_IJKL_DIRECTION (0x074 >> 2)
#define GPIO_MNOP_DATA_VALUE (0x078 >> 2)
#define GPIO_MNOP_DIRECTION (0x07C >> 2)
#define GPIO_QRST_DATA_VALUE (0x080 >> 2)
#define GPIO_QRST_DIRECTION (0x084 >> 2)
#define GPIO_UVWX_DATA_VALUE (0x088 >> 2)
#define GPIO_UVWX_DIRECTION (0x08C >> 2)
#define GPIO_IJKL_COMMAND_SRC_0 (0x090 >> 2)
#define GPIO_IJKL_COMMAND_SRC_1 (0x094 >> 2)
#define GPIO_IJKL_INT_ENABLE (0x098 >> 2)
#define GPIO_IJKL_INT_SENS_0 (0x09C >> 2)
#define GPIO_IJKL_INT_SENS_1 (0x0A0 >> 2)
#define GPIO_IJKL_INT_SENS_2 (0x0A4 >> 2)
#define GPIO_IJKL_INT_STATUS (0x0A8 >> 2)
#define GPIO_IJKL_RESET_TOLERANT (0x0AC >> 2)
#define GPIO_IJKL_DEBOUNCE_1 (0x0B0 >> 2)
#define GPIO_IJKL_DEBOUNCE_2 (0x0B4 >> 2)
#define GPIO_IJKL_INPUT_MASK (0x0B8 >> 2)
#define GPIO_ABCD_DATA_READ (0x0C0 >> 2)
#define GPIO_EFGH_DATA_READ (0x0C4 >> 2)
#define GPIO_IJKL_DATA_READ (0x0C8 >> 2)
#define GPIO_MNOP_DATA_READ (0x0CC >> 2)
#define GPIO_QRST_DATA_READ (0x0D0 >> 2)
#define GPIO_UVWX_DATA_READ (0x0D4 >> 2)
#define GPIO_YZAAAB_DATA_READ (0x0D8 >> 2)
#define GPIO_AC_DATA_READ (0x0DC >> 2)
#define GPIO_MNOP_COMMAND_SRC_0 (0x0E0 >> 2)
#define GPIO_MNOP_COMMAND_SRC_1 (0x0E4 >> 2)
#define GPIO_MNOP_INT_ENABLE (0x0E8 >> 2)
#define GPIO_MNOP_INT_SENS_0 (0x0EC >> 2)
#define GPIO_MNOP_INT_SENS_1 (0x0F0 >> 2)
#define GPIO_MNOP_INT_SENS_2 (0x0F4 >> 2)
#define GPIO_MNOP_INT_STATUS (0x0F8 >> 2)
#define GPIO_MNOP_RESET_TOLERANT (0x0FC >> 2)
#define GPIO_MNOP_DEBOUNCE_1 (0x100 >> 2)
#define GPIO_MNOP_DEBOUNCE_2 (0x104 >> 2)
#define GPIO_MNOP_INPUT_MASK (0x108 >> 2)
#define GPIO_QRST_COMMAND_SRC_0 (0x110 >> 2)
#define GPIO_QRST_COMMAND_SRC_1 (0x114 >> 2)
#define GPIO_QRST_INT_ENABLE (0x118 >> 2)
#define GPIO_QRST_INT_SENS_0 (0x11C >> 2)
#define GPIO_QRST_INT_SENS_1 (0x120 >> 2)
#define GPIO_QRST_INT_SENS_2 (0x124 >> 2)
#define GPIO_QRST_INT_STATUS (0x128 >> 2)
#define GPIO_QRST_RESET_TOLERANT (0x12C >> 2)
#define GPIO_QRST_DEBOUNCE_1 (0x130 >> 2)
#define GPIO_QRST_DEBOUNCE_2 (0x134 >> 2)
#define GPIO_QRST_INPUT_MASK (0x138 >> 2)
#define GPIO_UVWX_COMMAND_SRC_0 (0x140 >> 2)
#define GPIO_UVWX_COMMAND_SRC_1 (0x144 >> 2)
#define GPIO_UVWX_INT_ENABLE (0x148 >> 2)
#define GPIO_UVWX_INT_SENS_0 (0x14C >> 2)
#define GPIO_UVWX_INT_SENS_1 (0x150 >> 2)
#define GPIO_UVWX_INT_SENS_2 (0x154 >> 2)
#define GPIO_UVWX_INT_STATUS (0x158 >> 2)
#define GPIO_UVWX_RESET_TOLERANT (0x15C >> 2)
#define GPIO_UVWX_DEBOUNCE_1 (0x160 >> 2)
#define GPIO_UVWX_DEBOUNCE_2 (0x164 >> 2)
#define GPIO_UVWX_INPUT_MASK (0x168 >> 2)
#define GPIO_YZAAAB_COMMAND_SRC_0 (0x170 >> 2)
#define GPIO_YZAAAB_COMMAND_SRC_1 (0x174 >> 2)
#define GPIO_YZAAAB_INT_ENABLE (0x178 >> 2)
#define GPIO_YZAAAB_INT_SENS_0 (0x17C >> 2)
#define GPIO_YZAAAB_INT_SENS_1 (0x180 >> 2)
#define GPIO_YZAAAB_INT_SENS_2 (0x184 >> 2)
#define GPIO_YZAAAB_INT_STATUS (0x188 >> 2)
#define GPIO_YZAAAB_RESET_TOLERANT (0x18C >> 2)
#define GPIO_YZAAAB_DEBOUNCE_1 (0x190 >> 2)
#define GPIO_YZAAAB_DEBOUNCE_2 (0x194 >> 2)
#define GPIO_YZAAAB_INPUT_MASK (0x198 >> 2)
#define GPIO_AC_COMMAND_SRC_0 (0x1A0 >> 2)
#define GPIO_AC_COMMAND_SRC_1 (0x1A4 >> 2)
#define GPIO_AC_INT_ENABLE (0x1A8 >> 2)
#define GPIO_AC_INT_SENS_0 (0x1AC >> 2)
#define GPIO_AC_INT_SENS_1 (0x1B0 >> 2)
#define GPIO_AC_INT_SENS_2 (0x1B4 >> 2)
#define GPIO_AC_INT_STATUS (0x1B8 >> 2)
#define GPIO_AC_RESET_TOLERANT (0x1BC >> 2)
#define GPIO_AC_DEBOUNCE_1 (0x1C0 >> 2)
#define GPIO_AC_DEBOUNCE_2 (0x1C4 >> 2)
#define GPIO_AC_INPUT_MASK (0x1C8 >> 2)
#define GPIO_ABCD_INPUT_MASK (0x1D0 >> 2)
#define GPIO_EFGH_INPUT_MASK (0x1D4 >> 2)
#define GPIO_YZAAAB_DATA_VALUE (0x1E0 >> 2)
#define GPIO_YZAAAB_DIRECTION (0x1E4 >> 2)
#define GPIO_AC_DATA_VALUE (0x1E8 >> 2)
#define GPIO_AC_DIRECTION (0x1EC >> 2)
#define GPIO_3_3V_MEM_SIZE 0x1F0
#define GPIO_3_3V_REG_ARRAY_SIZE (GPIO_3_3V_MEM_SIZE >> 2)
/* AST2600 only - 1.8V gpios */
/*
* The AST2600 two copies of the GPIO controller: the same 3.3V gpios as the
* AST2400 (memory offsets 0x0-0x198) and a second controller with 1.8V gpios
* (memory offsets 0x800-0x9D4).
*/
#define GPIO_1_8V_ABCD_DATA_VALUE (0x000 >> 2)
#define GPIO_1_8V_ABCD_DIRECTION (0x004 >> 2)
#define GPIO_1_8V_ABCD_INT_ENABLE (0x008 >> 2)
#define GPIO_1_8V_ABCD_INT_SENS_0 (0x00C >> 2)
#define GPIO_1_8V_ABCD_INT_SENS_1 (0x010 >> 2)
#define GPIO_1_8V_ABCD_INT_SENS_2 (0x014 >> 2)
#define GPIO_1_8V_ABCD_INT_STATUS (0x018 >> 2)
#define GPIO_1_8V_ABCD_RESET_TOLERANT (0x01C >> 2)
#define GPIO_1_8V_E_DATA_VALUE (0x020 >> 2)
#define GPIO_1_8V_E_DIRECTION (0x024 >> 2)
#define GPIO_1_8V_E_INT_ENABLE (0x028 >> 2)
#define GPIO_1_8V_E_INT_SENS_0 (0x02C >> 2)
#define GPIO_1_8V_E_INT_SENS_1 (0x030 >> 2)
#define GPIO_1_8V_E_INT_SENS_2 (0x034 >> 2)
#define GPIO_1_8V_E_INT_STATUS (0x038 >> 2)
#define GPIO_1_8V_E_RESET_TOLERANT (0x03C >> 2)
#define GPIO_1_8V_ABCD_DEBOUNCE_1 (0x040 >> 2)
#define GPIO_1_8V_ABCD_DEBOUNCE_2 (0x044 >> 2)
#define GPIO_1_8V_E_DEBOUNCE_1 (0x048 >> 2)
#define GPIO_1_8V_E_DEBOUNCE_2 (0x04C >> 2)
#define GPIO_1_8V_DEBOUNCE_TIME_1 (0x050 >> 2)
#define GPIO_1_8V_DEBOUNCE_TIME_2 (0x054 >> 2)
#define GPIO_1_8V_DEBOUNCE_TIME_3 (0x058 >> 2)
#define GPIO_1_8V_ABCD_COMMAND_SRC_0 (0x060 >> 2)
#define GPIO_1_8V_ABCD_COMMAND_SRC_1 (0x064 >> 2)
#define GPIO_1_8V_E_COMMAND_SRC_0 (0x068 >> 2)
#define GPIO_1_8V_E_COMMAND_SRC_1 (0x06C >> 2)
#define GPIO_1_8V_ABCD_DATA_READ (0x0C0 >> 2)
#define GPIO_1_8V_E_DATA_READ (0x0C4 >> 2)
#define GPIO_1_8V_ABCD_INPUT_MASK (0x1D0 >> 2)
#define GPIO_1_8V_E_INPUT_MASK (0x1D4 >> 2)
#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;
uint32_t int_trigger = extract32(regs->int_sens_0, gpio, 1)
| extract32(regs->int_sens_1, gpio, 1) << 1
| extract32(regs->int_sens_2, gpio, 1) << 2;
uint32_t gpio_curr_high = extract32(regs->data_value, gpio, 1);
uint32_t gpio_int_enabled = extract32(regs->int_enable, gpio, 1);
if (!gpio_int_enabled) {
return 0;
}
/* Detect edges */
if (gpio_curr_high && !gpio_prev_high) {
rising_edge = 1;
} else if (!gpio_curr_high && gpio_prev_high) {
falling_edge = 1;
}
if (((int_trigger == ASPEED_FALLING_EDGE) && falling_edge) ||
((int_trigger == ASPEED_RISING_EDGE) && rising_edge) ||
((int_trigger == ASPEED_LEVEL_LOW) && !gpio_curr_high) ||
((int_trigger == ASPEED_LEVEL_HIGH) && gpio_curr_high) ||
((int_trigger >= ASPEED_DUAL_EDGE) && (rising_edge || falling_edge)))
{
regs->int_status = deposit32(regs->int_status, gpio, 1, 1);
return 1;
}
return 0;
}
#define nested_struct_index(ta, pa, m, tb, pb) \
(pb - ((tb *)(((char *)pa) + offsetof(ta, m))))
static ptrdiff_t aspeed_gpio_set_idx(AspeedGPIOState *s, GPIOSets *regs)
{
return nested_struct_index(AspeedGPIOState, s, sets, GPIOSets, regs);
}
static void aspeed_gpio_update(AspeedGPIOState *s, GPIOSets *regs,
uint32_t value, uint32_t mode_mask)
{
uint32_t input_mask = regs->input_mask;
uint32_t direction = regs->direction;
uint32_t old = regs->data_value;
uint32_t new = value;
uint32_t diff;
int gpio;
diff = (old ^ new);
diff &= mode_mask;
if (diff) {
for (gpio = 0; gpio < ASPEED_GPIOS_PER_SET; gpio++) {
uint32_t mask = 1 << gpio;
/* If the gpio needs to be updated... */
if (!(diff & mask)) {
continue;
}
/* ...and we're output or not input-masked... */
if (!(direction & mask) && (input_mask & mask)) {
continue;
}
/* ...then update the state. */
if (mask & new) {
regs->data_value |= mask;
} else {
regs->data_value &= ~mask;
}
/* If the gpio is set to output... */
if (direction & mask) {
/* ...trigger the line-state IRQ */
ptrdiff_t set = aspeed_gpio_set_idx(s, regs);
qemu_set_irq(s->gpios[set][gpio], !!(new & mask));
} else {
/* ...otherwise if we meet the line's current IRQ policy... */
if (aspeed_evaluate_irq(regs, old & mask, gpio)) {
/* ...trigger the VIC IRQ */
s->pending++;
}
}
}
}
qemu_set_irq(s->irq, !!(s->pending));
}
static bool aspeed_gpio_get_pin_level(AspeedGPIOState *s, uint32_t set_idx,
uint32_t pin)
{
uint32_t reg_val;
uint32_t pin_mask = 1 << pin;
reg_val = s->sets[set_idx].data_value;
return !!(reg_val & pin_mask);
}
static void aspeed_gpio_set_pin_level(AspeedGPIOState *s, uint32_t set_idx,
uint32_t pin, bool level)
{
uint32_t value = s->sets[set_idx].data_value;
uint32_t pin_mask = 1 << pin;
if (level) {
value |= pin_mask;
} else {
value &= ~pin_mask;
}
aspeed_gpio_update(s, &s->sets[set_idx], value, ~s->sets[set_idx].direction);
}
/*
* | src_1 | src_2 | source |
* |-----------------------------|
* | 0 | 0 | ARM |
* | 0 | 1 | LPC |
* | 1 | 0 | Coprocessor|
* | 1 | 1 | Reserved |
*
* Once the source of a set is programmed, corresponding bits in the
* data_value, direction, interrupt [enable, sens[0-2]], reset_tol and
* debounce registers can only be written by the source.
*
* Source is ARM by default
* only bits 24, 16, 8, and 0 can be set
*
* we don't currently have a model for the LPC or Coprocessor
*/
static uint32_t update_value_control_source(GPIOSets *regs, uint32_t old_value,
uint32_t value)
{
int i;
int cmd_source;
/* assume the source is always ARM for now */
int source = ASPEED_SOURCE_ARM;
uint32_t new_value = 0;
/* for each group in set */
for (i = 0; i < ASPEED_GPIOS_PER_SET; i += GPIOS_PER_GROUP) {
cmd_source = extract32(regs->cmd_source_0, i, 1)
| (extract32(regs->cmd_source_1, i, 1) << 1);
if (source == cmd_source) {
new_value |= (0xff << i) & value;
} else {
new_value |= (0xff << i) & old_value;
}
}
return new_value;
}
static const AspeedGPIOReg aspeed_3_3v_gpios[GPIO_3_3V_REG_ARRAY_SIZE] = {
/* Set ABCD */
[GPIO_ABCD_DATA_VALUE] = { 0, gpio_reg_data_value },
[GPIO_ABCD_DIRECTION] = { 0, gpio_reg_direction },
[GPIO_ABCD_INT_ENABLE] = { 0, gpio_reg_int_enable },
[GPIO_ABCD_INT_SENS_0] = { 0, gpio_reg_int_sens_0 },
[GPIO_ABCD_INT_SENS_1] = { 0, gpio_reg_int_sens_1 },
[GPIO_ABCD_INT_SENS_2] = { 0, gpio_reg_int_sens_2 },
[GPIO_ABCD_INT_STATUS] = { 0, gpio_reg_int_status },
[GPIO_ABCD_RESET_TOLERANT] = { 0, gpio_reg_reset_tolerant },
[GPIO_ABCD_DEBOUNCE_1] = { 0, gpio_reg_debounce_1 },
[GPIO_ABCD_DEBOUNCE_2] = { 0, gpio_reg_debounce_2 },
[GPIO_ABCD_COMMAND_SRC_0] = { 0, gpio_reg_cmd_source_0 },
[GPIO_ABCD_COMMAND_SRC_1] = { 0, gpio_reg_cmd_source_1 },
[GPIO_ABCD_DATA_READ] = { 0, gpio_reg_data_read },
[GPIO_ABCD_INPUT_MASK] = { 0, gpio_reg_input_mask },
/* Set EFGH */
[GPIO_EFGH_DATA_VALUE] = { 1, gpio_reg_data_value },
[GPIO_EFGH_DIRECTION] = { 1, gpio_reg_direction },
[GPIO_EFGH_INT_ENABLE] = { 1, gpio_reg_int_enable },
[GPIO_EFGH_INT_SENS_0] = { 1, gpio_reg_int_sens_0 },
[GPIO_EFGH_INT_SENS_1] = { 1, gpio_reg_int_sens_1 },
[GPIO_EFGH_INT_SENS_2] = { 1, gpio_reg_int_sens_2 },
[GPIO_EFGH_INT_STATUS] = { 1, gpio_reg_int_status },
[GPIO_EFGH_RESET_TOLERANT] = { 1, gpio_reg_reset_tolerant },
[GPIO_EFGH_DEBOUNCE_1] = { 1, gpio_reg_debounce_1 },
[GPIO_EFGH_DEBOUNCE_2] = { 1, gpio_reg_debounce_2 },
[GPIO_EFGH_COMMAND_SRC_0] = { 1, gpio_reg_cmd_source_0 },
[GPIO_EFGH_COMMAND_SRC_1] = { 1, gpio_reg_cmd_source_1 },
[GPIO_EFGH_DATA_READ] = { 1, gpio_reg_data_read },
[GPIO_EFGH_INPUT_MASK] = { 1, gpio_reg_input_mask },
/* Set IJKL */
[GPIO_IJKL_DATA_VALUE] = { 2, gpio_reg_data_value },
[GPIO_IJKL_DIRECTION] = { 2, gpio_reg_direction },
[GPIO_IJKL_INT_ENABLE] = { 2, gpio_reg_int_enable },
[GPIO_IJKL_INT_SENS_0] = { 2, gpio_reg_int_sens_0 },
[GPIO_IJKL_INT_SENS_1] = { 2, gpio_reg_int_sens_1 },
[GPIO_IJKL_INT_SENS_2] = { 2, gpio_reg_int_sens_2 },
[GPIO_IJKL_INT_STATUS] = { 2, gpio_reg_int_status },
[GPIO_IJKL_RESET_TOLERANT] = { 2, gpio_reg_reset_tolerant },
[GPIO_IJKL_DEBOUNCE_1] = { 2, gpio_reg_debounce_1 },
[GPIO_IJKL_DEBOUNCE_2] = { 2, gpio_reg_debounce_2 },
[GPIO_IJKL_COMMAND_SRC_0] = { 2, gpio_reg_cmd_source_0 },
[GPIO_IJKL_COMMAND_SRC_1] = { 2, gpio_reg_cmd_source_1 },
[GPIO_IJKL_DATA_READ] = { 2, gpio_reg_data_read },
[GPIO_IJKL_INPUT_MASK] = { 2, gpio_reg_input_mask },
/* Set MNOP */
[GPIO_MNOP_DATA_VALUE] = { 3, gpio_reg_data_value },
[GPIO_MNOP_DIRECTION] = { 3, gpio_reg_direction },
[GPIO_MNOP_INT_ENABLE] = { 3, gpio_reg_int_enable },
[GPIO_MNOP_INT_SENS_0] = { 3, gpio_reg_int_sens_0 },
[GPIO_MNOP_INT_SENS_1] = { 3, gpio_reg_int_sens_1 },
[GPIO_MNOP_INT_SENS_2] = { 3, gpio_reg_int_sens_2 },
[GPIO_MNOP_INT_STATUS] = { 3, gpio_reg_int_status },
[GPIO_MNOP_RESET_TOLERANT] = { 3, gpio_reg_reset_tolerant },
[GPIO_MNOP_DEBOUNCE_1] = { 3, gpio_reg_debounce_1 },
[GPIO_MNOP_DEBOUNCE_2] = { 3, gpio_reg_debounce_2 },
[GPIO_MNOP_COMMAND_SRC_0] = { 3, gpio_reg_cmd_source_0 },
[GPIO_MNOP_COMMAND_SRC_1] = { 3, gpio_reg_cmd_source_1 },
[GPIO_MNOP_DATA_READ] = { 3, gpio_reg_data_read },
[GPIO_MNOP_INPUT_MASK] = { 3, gpio_reg_input_mask },
/* Set QRST */
[GPIO_QRST_DATA_VALUE] = { 4, gpio_reg_data_value },
[GPIO_QRST_DIRECTION] = { 4, gpio_reg_direction },
[GPIO_QRST_INT_ENABLE] = { 4, gpio_reg_int_enable },
[GPIO_QRST_INT_SENS_0] = { 4, gpio_reg_int_sens_0 },
[GPIO_QRST_INT_SENS_1] = { 4, gpio_reg_int_sens_1 },
[GPIO_QRST_INT_SENS_2] = { 4, gpio_reg_int_sens_2 },
[GPIO_QRST_INT_STATUS] = { 4, gpio_reg_int_status },
[GPIO_QRST_RESET_TOLERANT] = { 4, gpio_reg_reset_tolerant },
[GPIO_QRST_DEBOUNCE_1] = { 4, gpio_reg_debounce_1 },
[GPIO_QRST_DEBOUNCE_2] = { 4, gpio_reg_debounce_2 },
[GPIO_QRST_COMMAND_SRC_0] = { 4, gpio_reg_cmd_source_0 },
[GPIO_QRST_COMMAND_SRC_1] = { 4, gpio_reg_cmd_source_1 },
[GPIO_QRST_DATA_READ] = { 4, gpio_reg_data_read },
[GPIO_QRST_INPUT_MASK] = { 4, gpio_reg_input_mask },
/* Set UVWX */
[GPIO_UVWX_DATA_VALUE] = { 5, gpio_reg_data_value },
[GPIO_UVWX_DIRECTION] = { 5, gpio_reg_direction },
[GPIO_UVWX_INT_ENABLE] = { 5, gpio_reg_int_enable },
[GPIO_UVWX_INT_SENS_0] = { 5, gpio_reg_int_sens_0 },
[GPIO_UVWX_INT_SENS_1] = { 5, gpio_reg_int_sens_1 },
[GPIO_UVWX_INT_SENS_2] = { 5, gpio_reg_int_sens_2 },
[GPIO_UVWX_INT_STATUS] = { 5, gpio_reg_int_status },
[GPIO_UVWX_RESET_TOLERANT] = { 5, gpio_reg_reset_tolerant },
[GPIO_UVWX_DEBOUNCE_1] = { 5, gpio_reg_debounce_1 },
[GPIO_UVWX_DEBOUNCE_2] = { 5, gpio_reg_debounce_2 },
[GPIO_UVWX_COMMAND_SRC_0] = { 5, gpio_reg_cmd_source_0 },
[GPIO_UVWX_COMMAND_SRC_1] = { 5, gpio_reg_cmd_source_1 },
[GPIO_UVWX_DATA_READ] = { 5, gpio_reg_data_read },
[GPIO_UVWX_INPUT_MASK] = { 5, gpio_reg_input_mask },
/* Set YZAAAB */
[GPIO_YZAAAB_DATA_VALUE] = { 6, gpio_reg_data_value },
[GPIO_YZAAAB_DIRECTION] = { 6, gpio_reg_direction },
[GPIO_YZAAAB_INT_ENABLE] = { 6, gpio_reg_int_enable },
[GPIO_YZAAAB_INT_SENS_0] = { 6, gpio_reg_int_sens_0 },
[GPIO_YZAAAB_INT_SENS_1] = { 6, gpio_reg_int_sens_1 },
[GPIO_YZAAAB_INT_SENS_2] = { 6, gpio_reg_int_sens_2 },
[GPIO_YZAAAB_INT_STATUS] = { 6, gpio_reg_int_status },
[GPIO_YZAAAB_RESET_TOLERANT] = { 6, gpio_reg_reset_tolerant },
[GPIO_YZAAAB_DEBOUNCE_1] = { 6, gpio_reg_debounce_1 },
[GPIO_YZAAAB_DEBOUNCE_2] = { 6, gpio_reg_debounce_2 },
[GPIO_YZAAAB_COMMAND_SRC_0] = { 6, gpio_reg_cmd_source_0 },
[GPIO_YZAAAB_COMMAND_SRC_1] = { 6, gpio_reg_cmd_source_1 },
[GPIO_YZAAAB_DATA_READ] = { 6, gpio_reg_data_read },
[GPIO_YZAAAB_INPUT_MASK] = { 6, gpio_reg_input_mask },
/* Set AC (ast2500 only) */
[GPIO_AC_DATA_VALUE] = { 7, gpio_reg_data_value },
[GPIO_AC_DIRECTION] = { 7, gpio_reg_direction },
[GPIO_AC_INT_ENABLE] = { 7, gpio_reg_int_enable },
[GPIO_AC_INT_SENS_0] = { 7, gpio_reg_int_sens_0 },
[GPIO_AC_INT_SENS_1] = { 7, gpio_reg_int_sens_1 },
[GPIO_AC_INT_SENS_2] = { 7, gpio_reg_int_sens_2 },
[GPIO_AC_INT_STATUS] = { 7, gpio_reg_int_status },
[GPIO_AC_RESET_TOLERANT] = { 7, gpio_reg_reset_tolerant },
[GPIO_AC_DEBOUNCE_1] = { 7, gpio_reg_debounce_1 },
[GPIO_AC_DEBOUNCE_2] = { 7, gpio_reg_debounce_2 },
[GPIO_AC_COMMAND_SRC_0] = { 7, gpio_reg_cmd_source_0 },
[GPIO_AC_COMMAND_SRC_1] = { 7, gpio_reg_cmd_source_1 },
[GPIO_AC_DATA_READ] = { 7, gpio_reg_data_read },
[GPIO_AC_INPUT_MASK] = { 7, gpio_reg_input_mask },
};
static const AspeedGPIOReg aspeed_1_8v_gpios[GPIO_1_8V_REG_ARRAY_SIZE] = {
/* 1.8V Set ABCD */
[GPIO_1_8V_ABCD_DATA_VALUE] = {0, gpio_reg_data_value},
[GPIO_1_8V_ABCD_DIRECTION] = {0, gpio_reg_direction},
[GPIO_1_8V_ABCD_INT_ENABLE] = {0, gpio_reg_int_enable},
[GPIO_1_8V_ABCD_INT_SENS_0] = {0, gpio_reg_int_sens_0},
[GPIO_1_8V_ABCD_INT_SENS_1] = {0, gpio_reg_int_sens_1},
[GPIO_1_8V_ABCD_INT_SENS_2] = {0, gpio_reg_int_sens_2},
[GPIO_1_8V_ABCD_INT_STATUS] = {0, gpio_reg_int_status},
[GPIO_1_8V_ABCD_RESET_TOLERANT] = {0, gpio_reg_reset_tolerant},
[GPIO_1_8V_ABCD_DEBOUNCE_1] = {0, gpio_reg_debounce_1},
[GPIO_1_8V_ABCD_DEBOUNCE_2] = {0, gpio_reg_debounce_2},
[GPIO_1_8V_ABCD_COMMAND_SRC_0] = {0, gpio_reg_cmd_source_0},
[GPIO_1_8V_ABCD_COMMAND_SRC_1] = {0, gpio_reg_cmd_source_1},
[GPIO_1_8V_ABCD_DATA_READ] = {0, gpio_reg_data_read},
[GPIO_1_8V_ABCD_INPUT_MASK] = {0, gpio_reg_input_mask},
/* 1.8V Set E */
[GPIO_1_8V_E_DATA_VALUE] = {1, gpio_reg_data_value},
[GPIO_1_8V_E_DIRECTION] = {1, gpio_reg_direction},
[GPIO_1_8V_E_INT_ENABLE] = {1, gpio_reg_int_enable},
[GPIO_1_8V_E_INT_SENS_0] = {1, gpio_reg_int_sens_0},
[GPIO_1_8V_E_INT_SENS_1] = {1, gpio_reg_int_sens_1},
[GPIO_1_8V_E_INT_SENS_2] = {1, gpio_reg_int_sens_2},
[GPIO_1_8V_E_INT_STATUS] = {1, gpio_reg_int_status},
[GPIO_1_8V_E_RESET_TOLERANT] = {1, gpio_reg_reset_tolerant},
[GPIO_1_8V_E_DEBOUNCE_1] = {1, gpio_reg_debounce_1},
[GPIO_1_8V_E_DEBOUNCE_2] = {1, gpio_reg_debounce_2},
[GPIO_1_8V_E_COMMAND_SRC_0] = {1, gpio_reg_cmd_source_0},
[GPIO_1_8V_E_COMMAND_SRC_1] = {1, gpio_reg_cmd_source_1},
[GPIO_1_8V_E_DATA_READ] = {1, gpio_reg_data_read},
[GPIO_1_8V_E_INPUT_MASK] = {1, gpio_reg_input_mask},
};
static uint64_t aspeed_gpio_read(void *opaque, hwaddr offset, uint32_t size)
{
AspeedGPIOState *s = ASPEED_GPIO(opaque);
AspeedGPIOClass *agc = ASPEED_GPIO_GET_CLASS(s);
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;
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%"
PRIx64"\n", __func__, offset);
return 0;
}
set = &s->sets[reg->set_idx];
switch (reg->type) {
case gpio_reg_data_value:
value = set->data_value;
break;
case gpio_reg_direction:
value = set->direction;
break;
case gpio_reg_int_enable:
value = set->int_enable;
break;
case gpio_reg_int_sens_0:
value = set->int_sens_0;
break;
case gpio_reg_int_sens_1:
value = set->int_sens_1;
break;
case gpio_reg_int_sens_2:
value = set->int_sens_2;
break;
case gpio_reg_int_status:
value = set->int_status;
break;
case gpio_reg_reset_tolerant:
value = set->reset_tol;
break;
case gpio_reg_debounce_1:
value = set->debounce_1;
break;
case gpio_reg_debounce_2:
value = set->debounce_2;
break;
case gpio_reg_cmd_source_0:
value = set->cmd_source_0;
break;
case gpio_reg_cmd_source_1:
value = set->cmd_source_1;
break;
case gpio_reg_data_read:
value = set->data_read;
break;
case gpio_reg_input_mask:
value = set->input_mask;
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_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, set->direction);
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, UINT32_MAX);
return;
}
static void aspeed_gpio_write(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;
uint64_t idx = -1;
const AspeedGPIOReg *reg;
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;
return;
}
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%"
PRIx64"\n", __func__, offset);
return;
}
set = &s->sets[reg->set_idx];
props = &agc->props[reg->set_idx];
switch (reg->type) {
case gpio_reg_data_value:
data &= props->output;
data = update_value_control_source(set, set->data_value, data);
set->data_read = data;
aspeed_gpio_update(s, set, data, set->direction);
return;
case gpio_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;
*/
data = (data | ~props->input) & props->output;
set->direction = update_value_control_source(set, set->direction, data);
break;
case gpio_reg_int_enable:
set->int_enable = update_value_control_source(set, set->int_enable,
data);
break;
case gpio_reg_int_sens_0:
set->int_sens_0 = update_value_control_source(set, set->int_sens_0,
data);
break;
case gpio_reg_int_sens_1:
set->int_sens_1 = update_value_control_source(set, set->int_sens_1,
data);
break;
case gpio_reg_int_sens_2:
set->int_sens_2 = update_value_control_source(set, set->int_sens_2,
data);
break;
case gpio_reg_int_status:
cleared = ctpop32(data & set->int_status);
if (s->pending && cleared) {
assert(s->pending >= cleared);
s->pending -= cleared;
}
set->int_status &= ~data;
break;
case gpio_reg_reset_tolerant:
set->reset_tol = update_value_control_source(set, set->reset_tol,
data);
return;
case gpio_reg_debounce_1:
set->debounce_1 = update_value_control_source(set, set->debounce_1,
data);
return;
case gpio_reg_debounce_2:
set->debounce_2 = update_value_control_source(set, set->debounce_2,
data);
return;
case gpio_reg_cmd_source_0:
set->cmd_source_0 = data & ASPEED_CMD_SRC_MASK;
return;
case gpio_reg_cmd_source_1:
set->cmd_source_1 = data & ASPEED_CMD_SRC_MASK;
return;
case gpio_reg_data_read:
/* Read only register */
return;
case gpio_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 = data & props->input;
break;
default:
qemu_log_mask(LOG_GUEST_ERROR, "%s: no setter for offset 0x%"
PRIx64"\n", __func__, offset);
return;
}
aspeed_gpio_update(s, set, set->data_value, UINT32_MAX);
return;
}
static int get_set_idx(AspeedGPIOState *s, const char *group, int *group_idx)
{
AspeedGPIOClass *agc = ASPEED_GPIO_GET_CLASS(s);
int set_idx, g_idx;
for (set_idx = 0; set_idx < agc->nr_gpio_sets; set_idx++) {
const GPIOSetProperties *set_props = &agc->props[set_idx];
for (g_idx = 0; g_idx < ASPEED_GROUPS_PER_SET; g_idx++) {
if (!strncmp(group, set_props->group_label[g_idx], strlen(group))) {
*group_idx = g_idx;
return set_idx;
}
}
}
return -1;
}
static void aspeed_gpio_get_pin(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
int pin = 0xfff;
bool level = true;
char group[4];
AspeedGPIOState *s = ASPEED_GPIO(obj);
int set_idx, group_idx = 0;
if (sscanf(name, "gpio%2[A-Z]%1d", group, &pin) != 2) {
/* 1.8V gpio */
if (sscanf(name, "gpio%3[18A-E]%1d", group, &pin) != 2) {
error_setg(errp, "%s: error reading %s", __func__, name);
return;
}
}
set_idx = get_set_idx(s, group, &group_idx);
if (set_idx == -1) {
error_setg(errp, "%s: invalid group %s", __func__, group);
return;
}
pin = pin + group_idx * GPIOS_PER_GROUP;
level = aspeed_gpio_get_pin_level(s, set_idx, pin);
visit_type_bool(v, name, &level, errp);
}
static void aspeed_gpio_set_pin(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
bool level;
int pin = 0xfff;
char group[4];
AspeedGPIOState *s = ASPEED_GPIO(obj);
int set_idx, group_idx = 0;
if (!visit_type_bool(v, name, &level, errp)) {
return;
}
if (sscanf(name, "gpio%2[A-Z]%1d", group, &pin) != 2) {
/* 1.8V gpio */
if (sscanf(name, "gpio%3[18A-E]%1d", group, &pin) != 2) {
error_setg(errp, "%s: error reading %s", __func__, name);
return;
}
}
set_idx = get_set_idx(s, group, &group_idx);
if (set_idx == -1) {
error_setg(errp, "%s: invalid group %s", __func__, group);
return;
}
pin = pin + group_idx * GPIOS_PER_GROUP;
aspeed_gpio_set_pin_level(s, set_idx, pin, level);
}
/****************** 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"} },
[2] = {0xffffffff, 0xffffffff, {"I", "J", "K", "L"} },
[3] = {0xffffffff, 0xffffffff, {"M", "N", "O", "P"} },
[4] = {0xffffffff, 0xffffffff, {"Q", "R", "S", "T"} },
[5] = {0xffffffff, 0x0000ffff, {"U", "V", "W", "X"} },
[6] = {0x0000000f, 0x0fffff0f, {"Y", "Z", "AA", "AB"} },
};
static const GPIOSetProperties ast2500_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] = {0xffffffff, 0xffffffff, {"M", "N", "O", "P"} },
[4] = {0xffffffff, 0xffffffff, {"Q", "R", "S", "T"} },
[5] = {0xffffffff, 0x0000ffff, {"U", "V", "W", "X"} },
[6] = {0x0fffffff, 0x0fffffff, {"Y", "Z", "AA", "AB"} },
[7] = {0x000000ff, 0x000000ff, {"AC"} },
};
static GPIOSetProperties ast2600_3_3v_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] = {0xffffffff, 0xffffffff, {"M", "N", "O", "P"} },
[4] = {0xffffffff, 0x00ffffff, {"Q", "R", "S", "T"} },
[5] = {0xffffffff, 0xffffff00, {"U", "V", "W", "X"} },
[6] = {0x0000ffff, 0x0000ffff, {"Y", "Z"} },
};
static GPIOSetProperties ast2600_1_8v_set_props[ASPEED_GPIO_MAX_NR_SETS] = {
[0] = {0xffffffff, 0xffffffff, {"18A", "18B", "18C", "18D"} },
[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,
.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);
/* TODO: respect the reset tolerance registers */
memset(s->sets, 0, sizeof(s->sets));
}
static void aspeed_gpio_realize(DeviceState *dev, Error **errp)
{
AspeedGPIOState *s = ASPEED_GPIO(dev);
SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
AspeedGPIOClass *agc = ASPEED_GPIO_GET_CLASS(s);
/* Interrupt parent line */
sysbus_init_irq(sbd, &s->irq);
/* Individual GPIOs */
for (int i = 0; i < ASPEED_GPIO_MAX_NR_SETS; i++) {
const GPIOSetProperties *props = &agc->props[i];
uint32_t skip = ~(props->input | props->output);
for (int j = 0; j < ASPEED_GPIOS_PER_SET; j++) {
if (skip >> j & 1) {
continue;
}
sysbus_init_irq(sbd, &s->gpios[i][j]);
}
}
memory_region_init_io(&s->iomem, OBJECT(s), &aspeed_gpio_ops, s,
TYPE_ASPEED_GPIO, 0x800);
sysbus_init_mmio(sbd, &s->iomem);
}
static void aspeed_gpio_init(Object *obj)
{
AspeedGPIOState *s = ASPEED_GPIO(obj);
AspeedGPIOClass *agc = ASPEED_GPIO_GET_CLASS(s);
for (int i = 0; i < ASPEED_GPIO_MAX_NR_SETS; i++) {
const GPIOSetProperties *props = &agc->props[i];
uint32_t skip = ~(props->input | props->output);
for (int j = 0; j < ASPEED_GPIOS_PER_SET; j++) {
if (skip >> j & 1) {
continue;
}
int group_idx = j / GPIOS_PER_GROUP;
int pin_idx = j % GPIOS_PER_GROUP;
const char *group = &props->group_label[group_idx][0];
char *name = g_strdup_printf("gpio%s%d", group, pin_idx);
object_property_add(obj, name, "bool", aspeed_gpio_get_pin,
aspeed_gpio_set_pin, NULL, NULL);
g_free(name);
}
}
}
static const VMStateDescription vmstate_gpio_regs = {
.name = TYPE_ASPEED_GPIO"/regs",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32(data_value, GPIOSets),
VMSTATE_UINT32(data_read, GPIOSets),
VMSTATE_UINT32(direction, GPIOSets),
VMSTATE_UINT32(int_enable, GPIOSets),
VMSTATE_UINT32(int_sens_0, GPIOSets),
VMSTATE_UINT32(int_sens_1, GPIOSets),
VMSTATE_UINT32(int_sens_2, GPIOSets),
VMSTATE_UINT32(int_status, GPIOSets),
VMSTATE_UINT32(reset_tol, GPIOSets),
VMSTATE_UINT32(cmd_source_0, GPIOSets),
VMSTATE_UINT32(cmd_source_1, GPIOSets),
VMSTATE_UINT32(debounce_1, GPIOSets),
VMSTATE_UINT32(debounce_2, GPIOSets),
VMSTATE_UINT32(input_mask, GPIOSets),
VMSTATE_END_OF_LIST(),
}
};
static const VMStateDescription vmstate_aspeed_gpio = {
.name = TYPE_ASPEED_GPIO,
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_STRUCT_ARRAY(sets, AspeedGPIOState, ASPEED_GPIO_MAX_NR_SETS,
1, vmstate_gpio_regs, GPIOSets),
VMSTATE_UINT32_ARRAY(debounce_regs, AspeedGPIOState,
ASPEED_GPIO_NR_DEBOUNCE_REGS),
VMSTATE_END_OF_LIST(),
}
};
static void aspeed_gpio_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = aspeed_gpio_realize;
dc->reset = aspeed_gpio_reset;
dc->desc = "Aspeed GPIO Controller";
dc->vmsd = &vmstate_aspeed_gpio;
}
static void aspeed_gpio_ast2400_class_init(ObjectClass *klass, void *data)
{
AspeedGPIOClass *agc = ASPEED_GPIO_CLASS(klass);
agc->props = ast2400_set_props;
agc->nr_gpio_pins = 216;
agc->nr_gpio_sets = 7;
agc->reg_table = aspeed_3_3v_gpios;
}
static void aspeed_gpio_2500_class_init(ObjectClass *klass, void *data)
{
AspeedGPIOClass *agc = ASPEED_GPIO_CLASS(klass);
agc->props = ast2500_set_props;
agc->nr_gpio_pins = 228;
agc->nr_gpio_sets = 8;
agc->reg_table = aspeed_3_3v_gpios;
}
static void aspeed_gpio_ast2600_3_3v_class_init(ObjectClass *klass, void *data)
{
AspeedGPIOClass *agc = ASPEED_GPIO_CLASS(klass);
agc->props = ast2600_3_3v_set_props;
agc->nr_gpio_pins = 208;
agc->nr_gpio_sets = 7;
agc->reg_table = aspeed_3_3v_gpios;
}
static void aspeed_gpio_ast2600_1_8v_class_init(ObjectClass *klass, void *data)
{
AspeedGPIOClass *agc = ASPEED_GPIO_CLASS(klass);
agc->props = ast2600_1_8v_set_props;
agc->nr_gpio_pins = 36;
agc->nr_gpio_sets = 2;
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,
.instance_size = sizeof(AspeedGPIOState),
.class_size = sizeof(AspeedGPIOClass),
.class_init = aspeed_gpio_class_init,
.abstract = true,
};
static const TypeInfo aspeed_gpio_ast2400_info = {
.name = TYPE_ASPEED_GPIO "-ast2400",
.parent = TYPE_ASPEED_GPIO,
.class_init = aspeed_gpio_ast2400_class_init,
.instance_init = aspeed_gpio_init,
};
static const TypeInfo aspeed_gpio_ast2500_info = {
.name = TYPE_ASPEED_GPIO "-ast2500",
.parent = TYPE_ASPEED_GPIO,
.class_init = aspeed_gpio_2500_class_init,
.instance_init = aspeed_gpio_init,
};
static const TypeInfo aspeed_gpio_ast2600_3_3v_info = {
.name = TYPE_ASPEED_GPIO "-ast2600",
.parent = TYPE_ASPEED_GPIO,
.class_init = aspeed_gpio_ast2600_3_3v_class_init,
.instance_init = aspeed_gpio_init,
};
static const TypeInfo aspeed_gpio_ast2600_1_8v_info = {
.name = TYPE_ASPEED_GPIO "-ast2600-1_8v",
.parent = TYPE_ASPEED_GPIO,
.class_init = aspeed_gpio_ast2600_1_8v_class_init,
.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);
type_register_static(&aspeed_gpio_ast2400_info);
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);
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