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/*
* QEMU PS/2 Controller
*
* Copyright (c) 2003 Fabrice Bellard
*
* SPDX-License-Identifier: MIT
*/
#ifndef HW_INPUT_I8042_H
#define HW_INPUT_I8042_H
#include "hw/isa/isa.h"
#include "hw/sysbus.h"
#include "hw/input/ps2.h"
#include "qom/object.h"
#define I8042_KBD_IRQ 0
#define I8042_MOUSE_IRQ 1
typedef struct KBDState {
uint8_t write_cmd; /* if non zero, write data to port 60 is expected */
uint8_t status;
uint8_t mode;
uint8_t outport;
uint32_t migration_flags;
uint32_t obsrc;
bool outport_present;
bool extended_state;
bool extended_state_loaded;
/* Bitmask of devices with data available. */
uint8_t pending;
uint8_t obdata;
uint8_t cbdata;
uint8_t pending_tmp;
PS2KbdState ps2kbd;
PS2MouseState ps2mouse;
QEMUTimer *throttle_timer;
qemu_irq irqs[2];
qemu_irq a20_out;
hwaddr mask;
} KBDState;
/*
* QEMU interface:
* + Named GPIO input "ps2-kbd-input-irq": set to 1 if the downstream PS2
* keyboard device has asserted its irq
* + Named GPIO input "ps2-mouse-input-irq": set to 1 if the downstream PS2
* mouse device has asserted its irq
* + Named GPIO output "a20": A20 line for x86 PCs
* + Unnamed GPIO output 0-1: i8042 output irqs for keyboard (0) or mouse (1)
*/
#define TYPE_I8042 "i8042"
OBJECT_DECLARE_SIMPLE_TYPE(ISAKBDState, I8042)
struct ISAKBDState {
ISADevice parent_obj;
KBDState kbd;
bool kbd_throttle;
MemoryRegion io[2];
uint8_t kbd_irq;
uint8_t mouse_irq;
};
/*
* QEMU interface:
* + sysbus MMIO region 0: MemoryRegion defining the command/status/data
* registers (access determined by mask property and access type)
* + Named GPIO input "ps2-kbd-input-irq": set to 1 if the downstream PS2
* keyboard device has asserted its irq
* + Named GPIO input "ps2-mouse-input-irq": set to 1 if the downstream PS2
* mouse device has asserted its irq
* + Unnamed GPIO output 0-1: i8042 output irqs for keyboard (0) or mouse (1)
*/
#define TYPE_I8042_MMIO "i8042-mmio"
OBJECT_DECLARE_SIMPLE_TYPE(MMIOKBDState, I8042_MMIO)
struct MMIOKBDState {
SysBusDevice parent_obj;
KBDState kbd;
uint32_t size;
MemoryRegion region;
};
#define I8042_A20_LINE "a20"
void i8042_isa_mouse_fake_event(ISAKBDState *isa);
void i8042_setup_a20_line(ISADevice *dev, qemu_irq a20_out);
static inline bool i8042_present(void)
{
bool amb = false;
return object_resolve_path_type("", TYPE_I8042, &amb) || amb;
}
/*
* ACPI v2, Table 5-10 - Fixed ACPI Description Table Boot Architecture
* Flags, bit offset 1 - 8042.
*/
static inline uint16_t iapc_boot_arch_8042(void)
{
return i8042_present() ? 0x1 << 1 : 0x0 ;
}
#endif /* HW_INPUT_I8042_H */
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