| /* |
| * QEMU PC keyboard emulation |
| * |
| * Copyright (c) 2003 Fabrice Bellard |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| */ |
| #include "hw.h" |
| #include "isa.h" |
| #include "pc.h" |
| #include "ps2.h" |
| #include "sysemu.h" |
| |
| /* debug PC keyboard */ |
| //#define DEBUG_KBD |
| |
| /* Keyboard Controller Commands */ |
| #define KBD_CCMD_READ_MODE 0x20 /* Read mode bits */ |
| #define KBD_CCMD_WRITE_MODE 0x60 /* Write mode bits */ |
| #define KBD_CCMD_GET_VERSION 0xA1 /* Get controller version */ |
| #define KBD_CCMD_MOUSE_DISABLE 0xA7 /* Disable mouse interface */ |
| #define KBD_CCMD_MOUSE_ENABLE 0xA8 /* Enable mouse interface */ |
| #define KBD_CCMD_TEST_MOUSE 0xA9 /* Mouse interface test */ |
| #define KBD_CCMD_SELF_TEST 0xAA /* Controller self test */ |
| #define KBD_CCMD_KBD_TEST 0xAB /* Keyboard interface test */ |
| #define KBD_CCMD_KBD_DISABLE 0xAD /* Keyboard interface disable */ |
| #define KBD_CCMD_KBD_ENABLE 0xAE /* Keyboard interface enable */ |
| #define KBD_CCMD_READ_INPORT 0xC0 /* read input port */ |
| #define KBD_CCMD_READ_OUTPORT 0xD0 /* read output port */ |
| #define KBD_CCMD_WRITE_OUTPORT 0xD1 /* write output port */ |
| #define KBD_CCMD_WRITE_OBUF 0xD2 |
| #define KBD_CCMD_WRITE_AUX_OBUF 0xD3 /* Write to output buffer as if |
| initiated by the auxiliary device */ |
| #define KBD_CCMD_WRITE_MOUSE 0xD4 /* Write the following byte to the mouse */ |
| #define KBD_CCMD_DISABLE_A20 0xDD /* HP vectra only ? */ |
| #define KBD_CCMD_ENABLE_A20 0xDF /* HP vectra only ? */ |
| #define KBD_CCMD_RESET 0xFE |
| |
| /* Keyboard Commands */ |
| #define KBD_CMD_SET_LEDS 0xED /* Set keyboard leds */ |
| #define KBD_CMD_ECHO 0xEE |
| #define KBD_CMD_GET_ID 0xF2 /* get keyboard ID */ |
| #define KBD_CMD_SET_RATE 0xF3 /* Set typematic rate */ |
| #define KBD_CMD_ENABLE 0xF4 /* Enable scanning */ |
| #define KBD_CMD_RESET_DISABLE 0xF5 /* reset and disable scanning */ |
| #define KBD_CMD_RESET_ENABLE 0xF6 /* reset and enable scanning */ |
| #define KBD_CMD_RESET 0xFF /* Reset */ |
| |
| /* Keyboard Replies */ |
| #define KBD_REPLY_POR 0xAA /* Power on reset */ |
| #define KBD_REPLY_ACK 0xFA /* Command ACK */ |
| #define KBD_REPLY_RESEND 0xFE /* Command NACK, send the cmd again */ |
| |
| /* Status Register Bits */ |
| #define KBD_STAT_OBF 0x01 /* Keyboard output buffer full */ |
| #define KBD_STAT_IBF 0x02 /* Keyboard input buffer full */ |
| #define KBD_STAT_SELFTEST 0x04 /* Self test successful */ |
| #define KBD_STAT_CMD 0x08 /* Last write was a command write (0=data) */ |
| #define KBD_STAT_UNLOCKED 0x10 /* Zero if keyboard locked */ |
| #define KBD_STAT_MOUSE_OBF 0x20 /* Mouse output buffer full */ |
| #define KBD_STAT_GTO 0x40 /* General receive/xmit timeout */ |
| #define KBD_STAT_PERR 0x80 /* Parity error */ |
| |
| /* Controller Mode Register Bits */ |
| #define KBD_MODE_KBD_INT 0x01 /* Keyboard data generate IRQ1 */ |
| #define KBD_MODE_MOUSE_INT 0x02 /* Mouse data generate IRQ12 */ |
| #define KBD_MODE_SYS 0x04 /* The system flag (?) */ |
| #define KBD_MODE_NO_KEYLOCK 0x08 /* The keylock doesn't affect the keyboard if set */ |
| #define KBD_MODE_DISABLE_KBD 0x10 /* Disable keyboard interface */ |
| #define KBD_MODE_DISABLE_MOUSE 0x20 /* Disable mouse interface */ |
| #define KBD_MODE_KCC 0x40 /* Scan code conversion to PC format */ |
| #define KBD_MODE_RFU 0x80 |
| |
| /* Mouse Commands */ |
| #define AUX_SET_SCALE11 0xE6 /* Set 1:1 scaling */ |
| #define AUX_SET_SCALE21 0xE7 /* Set 2:1 scaling */ |
| #define AUX_SET_RES 0xE8 /* Set resolution */ |
| #define AUX_GET_SCALE 0xE9 /* Get scaling factor */ |
| #define AUX_SET_STREAM 0xEA /* Set stream mode */ |
| #define AUX_POLL 0xEB /* Poll */ |
| #define AUX_RESET_WRAP 0xEC /* Reset wrap mode */ |
| #define AUX_SET_WRAP 0xEE /* Set wrap mode */ |
| #define AUX_SET_REMOTE 0xF0 /* Set remote mode */ |
| #define AUX_GET_TYPE 0xF2 /* Get type */ |
| #define AUX_SET_SAMPLE 0xF3 /* Set sample rate */ |
| #define AUX_ENABLE_DEV 0xF4 /* Enable aux device */ |
| #define AUX_DISABLE_DEV 0xF5 /* Disable aux device */ |
| #define AUX_SET_DEFAULT 0xF6 |
| #define AUX_RESET 0xFF /* Reset aux device */ |
| #define AUX_ACK 0xFA /* Command byte ACK. */ |
| |
| #define MOUSE_STATUS_REMOTE 0x40 |
| #define MOUSE_STATUS_ENABLED 0x20 |
| #define MOUSE_STATUS_SCALE21 0x10 |
| |
| #define KBD_PENDING_KBD 1 |
| #define KBD_PENDING_AUX 2 |
| |
| typedef struct KBDState { |
| uint8_t write_cmd; /* if non zero, write data to port 60 is expected */ |
| uint8_t status; |
| uint8_t mode; |
| /* Bitmask of devices with data available. */ |
| uint8_t pending; |
| void *kbd; |
| void *mouse; |
| |
| qemu_irq irq_kbd; |
| qemu_irq irq_mouse; |
| target_phys_addr_t mask; |
| } KBDState; |
| |
| static KBDState kbd_state; |
| |
| /* update irq and KBD_STAT_[MOUSE_]OBF */ |
| /* XXX: not generating the irqs if KBD_MODE_DISABLE_KBD is set may be |
| incorrect, but it avoids having to simulate exact delays */ |
| static void kbd_update_irq(KBDState *s) |
| { |
| int irq_kbd_level, irq_mouse_level; |
| |
| irq_kbd_level = 0; |
| irq_mouse_level = 0; |
| s->status &= ~(KBD_STAT_OBF | KBD_STAT_MOUSE_OBF); |
| if (s->pending) { |
| s->status |= KBD_STAT_OBF; |
| /* kbd data takes priority over aux data. */ |
| if (s->pending == KBD_PENDING_AUX) { |
| s->status |= KBD_STAT_MOUSE_OBF; |
| if (s->mode & KBD_MODE_MOUSE_INT) |
| irq_mouse_level = 1; |
| } else { |
| if ((s->mode & KBD_MODE_KBD_INT) && |
| !(s->mode & KBD_MODE_DISABLE_KBD)) |
| irq_kbd_level = 1; |
| } |
| } |
| qemu_set_irq(s->irq_kbd, irq_kbd_level); |
| qemu_set_irq(s->irq_mouse, irq_mouse_level); |
| } |
| |
| static void kbd_update_kbd_irq(void *opaque, int level) |
| { |
| KBDState *s = (KBDState *)opaque; |
| |
| if (level) |
| s->pending |= KBD_PENDING_KBD; |
| else |
| s->pending &= ~KBD_PENDING_KBD; |
| kbd_update_irq(s); |
| } |
| |
| static void kbd_update_aux_irq(void *opaque, int level) |
| { |
| KBDState *s = (KBDState *)opaque; |
| |
| if (level) |
| s->pending |= KBD_PENDING_AUX; |
| else |
| s->pending &= ~KBD_PENDING_AUX; |
| kbd_update_irq(s); |
| } |
| |
| static uint32_t kbd_read_status(void *opaque, uint32_t addr) |
| { |
| KBDState *s = opaque; |
| int val; |
| val = s->status; |
| #if defined(DEBUG_KBD) |
| printf("kbd: read status=0x%02x\n", val); |
| #endif |
| return val; |
| } |
| |
| static void kbd_queue(KBDState *s, int b, int aux) |
| { |
| if (aux) |
| ps2_queue(s->mouse, b); |
| else |
| ps2_queue(s->kbd, b); |
| } |
| |
| static void kbd_write_command(void *opaque, uint32_t addr, uint32_t val) |
| { |
| KBDState *s = opaque; |
| |
| #ifdef DEBUG_KBD |
| printf("kbd: write cmd=0x%02x\n", val); |
| #endif |
| switch(val) { |
| case KBD_CCMD_READ_MODE: |
| kbd_queue(s, s->mode, 0); |
| break; |
| case KBD_CCMD_WRITE_MODE: |
| case KBD_CCMD_WRITE_OBUF: |
| case KBD_CCMD_WRITE_AUX_OBUF: |
| case KBD_CCMD_WRITE_MOUSE: |
| case KBD_CCMD_WRITE_OUTPORT: |
| s->write_cmd = val; |
| break; |
| case KBD_CCMD_MOUSE_DISABLE: |
| s->mode |= KBD_MODE_DISABLE_MOUSE; |
| break; |
| case KBD_CCMD_MOUSE_ENABLE: |
| s->mode &= ~KBD_MODE_DISABLE_MOUSE; |
| break; |
| case KBD_CCMD_TEST_MOUSE: |
| kbd_queue(s, 0x00, 0); |
| break; |
| case KBD_CCMD_SELF_TEST: |
| s->status |= KBD_STAT_SELFTEST; |
| kbd_queue(s, 0x55, 0); |
| break; |
| case KBD_CCMD_KBD_TEST: |
| kbd_queue(s, 0x00, 0); |
| break; |
| case KBD_CCMD_KBD_DISABLE: |
| s->mode |= KBD_MODE_DISABLE_KBD; |
| kbd_update_irq(s); |
| break; |
| case KBD_CCMD_KBD_ENABLE: |
| s->mode &= ~KBD_MODE_DISABLE_KBD; |
| kbd_update_irq(s); |
| break; |
| case KBD_CCMD_READ_INPORT: |
| kbd_queue(s, 0x00, 0); |
| break; |
| case KBD_CCMD_READ_OUTPORT: |
| /* XXX: check that */ |
| #ifdef TARGET_I386 |
| val = 0x01 | (ioport_get_a20() << 1); |
| #else |
| val = 0x01; |
| #endif |
| if (s->status & KBD_STAT_OBF) |
| val |= 0x10; |
| if (s->status & KBD_STAT_MOUSE_OBF) |
| val |= 0x20; |
| kbd_queue(s, val, 0); |
| break; |
| #ifdef TARGET_I386 |
| case KBD_CCMD_ENABLE_A20: |
| ioport_set_a20(1); |
| break; |
| case KBD_CCMD_DISABLE_A20: |
| ioport_set_a20(0); |
| break; |
| #endif |
| case KBD_CCMD_RESET: |
| qemu_system_reset_request(); |
| break; |
| case 0xff: |
| /* ignore that - I don't know what is its use */ |
| break; |
| default: |
| fprintf(stderr, "qemu: unsupported keyboard cmd=0x%02x\n", val); |
| break; |
| } |
| } |
| |
| static uint32_t kbd_read_data(void *opaque, uint32_t addr) |
| { |
| KBDState *s = opaque; |
| uint32_t val; |
| |
| if (s->pending == KBD_PENDING_AUX) |
| val = ps2_read_data(s->mouse); |
| else |
| val = ps2_read_data(s->kbd); |
| |
| #if defined(DEBUG_KBD) |
| printf("kbd: read data=0x%02x\n", val); |
| #endif |
| return val; |
| } |
| |
| static void kbd_write_data(void *opaque, uint32_t addr, uint32_t val) |
| { |
| KBDState *s = opaque; |
| |
| #ifdef DEBUG_KBD |
| printf("kbd: write data=0x%02x\n", val); |
| #endif |
| |
| switch(s->write_cmd) { |
| case 0: |
| ps2_write_keyboard(s->kbd, val); |
| break; |
| case KBD_CCMD_WRITE_MODE: |
| s->mode = val; |
| ps2_keyboard_set_translation(s->kbd, (s->mode & KBD_MODE_KCC) != 0); |
| /* ??? */ |
| kbd_update_irq(s); |
| break; |
| case KBD_CCMD_WRITE_OBUF: |
| kbd_queue(s, val, 0); |
| break; |
| case KBD_CCMD_WRITE_AUX_OBUF: |
| kbd_queue(s, val, 1); |
| break; |
| case KBD_CCMD_WRITE_OUTPORT: |
| #ifdef TARGET_I386 |
| ioport_set_a20((val >> 1) & 1); |
| #endif |
| if (!(val & 1)) { |
| qemu_system_reset_request(); |
| } |
| break; |
| case KBD_CCMD_WRITE_MOUSE: |
| ps2_write_mouse(s->mouse, val); |
| break; |
| default: |
| break; |
| } |
| s->write_cmd = 0; |
| } |
| |
| static void kbd_reset(void *opaque) |
| { |
| KBDState *s = opaque; |
| |
| s->mode = KBD_MODE_KBD_INT | KBD_MODE_MOUSE_INT; |
| s->status = KBD_STAT_CMD | KBD_STAT_UNLOCKED; |
| } |
| |
| static void kbd_save(QEMUFile* f, void* opaque) |
| { |
| KBDState *s = (KBDState*)opaque; |
| |
| qemu_put_8s(f, &s->write_cmd); |
| qemu_put_8s(f, &s->status); |
| qemu_put_8s(f, &s->mode); |
| qemu_put_8s(f, &s->pending); |
| } |
| |
| static int kbd_load(QEMUFile* f, void* opaque, int version_id) |
| { |
| KBDState *s = (KBDState*)opaque; |
| |
| if (version_id != 3) |
| return -EINVAL; |
| qemu_get_8s(f, &s->write_cmd); |
| qemu_get_8s(f, &s->status); |
| qemu_get_8s(f, &s->mode); |
| qemu_get_8s(f, &s->pending); |
| return 0; |
| } |
| |
| void i8042_init(qemu_irq kbd_irq, qemu_irq mouse_irq, uint32_t io_base) |
| { |
| KBDState *s = &kbd_state; |
| |
| s->irq_kbd = kbd_irq; |
| s->irq_mouse = mouse_irq; |
| |
| kbd_reset(s); |
| register_savevm("pckbd", 0, 3, kbd_save, kbd_load, s); |
| register_ioport_read(io_base, 1, 1, kbd_read_data, s); |
| register_ioport_write(io_base, 1, 1, kbd_write_data, s); |
| register_ioport_read(io_base + 4, 1, 1, kbd_read_status, s); |
| register_ioport_write(io_base + 4, 1, 1, kbd_write_command, s); |
| |
| s->kbd = ps2_kbd_init(kbd_update_kbd_irq, s); |
| s->mouse = ps2_mouse_init(kbd_update_aux_irq, s); |
| #ifdef TARGET_I386 |
| vmmouse_init(s->mouse); |
| #endif |
| qemu_register_reset(kbd_reset, 0, s); |
| } |
| |
| /* Memory mapped interface */ |
| static uint32_t kbd_mm_readb (void *opaque, target_phys_addr_t addr) |
| { |
| KBDState *s = opaque; |
| |
| if (addr & s->mask) |
| return kbd_read_status(s, 0) & 0xff; |
| else |
| return kbd_read_data(s, 0) & 0xff; |
| } |
| |
| static void kbd_mm_writeb (void *opaque, target_phys_addr_t addr, uint32_t value) |
| { |
| KBDState *s = opaque; |
| |
| if (addr & s->mask) |
| kbd_write_command(s, 0, value & 0xff); |
| else |
| kbd_write_data(s, 0, value & 0xff); |
| } |
| |
| static CPUReadMemoryFunc *kbd_mm_read[] = { |
| &kbd_mm_readb, |
| &kbd_mm_readb, |
| &kbd_mm_readb, |
| }; |
| |
| static CPUWriteMemoryFunc *kbd_mm_write[] = { |
| &kbd_mm_writeb, |
| &kbd_mm_writeb, |
| &kbd_mm_writeb, |
| }; |
| |
| void i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq, |
| target_phys_addr_t base, ram_addr_t size, |
| target_phys_addr_t mask) |
| { |
| KBDState *s = &kbd_state; |
| int s_io_memory; |
| |
| s->irq_kbd = kbd_irq; |
| s->irq_mouse = mouse_irq; |
| s->mask = mask; |
| |
| kbd_reset(s); |
| register_savevm("pckbd", 0, 3, kbd_save, kbd_load, s); |
| s_io_memory = cpu_register_io_memory(0, kbd_mm_read, kbd_mm_write, s); |
| cpu_register_physical_memory(base, size, s_io_memory); |
| |
| s->kbd = ps2_kbd_init(kbd_update_kbd_irq, s); |
| s->mouse = ps2_mouse_init(kbd_update_aux_irq, s); |
| #ifdef TARGET_I386 |
| vmmouse_init(s->mouse); |
| #endif |
| qemu_register_reset(kbd_reset, 0, s); |
| } |