--- /dev/null
+/*
+ * 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"
+
+#include "qemu-common.h"
+#include "console.h"
+#include "qemu-timer.h"
+#include "qemu-xen.h"
+
+#include <xen/sys/ps2back.h>
+#include <sys/ioctl.h>
+#include <assert.h>
+
+/* debug PC keyboard */
+//#define DEBUG_KBD
+
+#ifdef DEBUG_KBD
+# define DPRINTF(_f, _a...) fprintf(stderr, __FILE__ ":%d: " _f, __LINE__, ##_a)
+#else
+# define DPRINTF(_f, _a...) (void(0))
+#endif
+
+/* 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_QUEUE_SIZE 256
+
+#define KBD_PENDING_KBD 1
+#define KBD_PENDING_AUX 2
+
+#define PS2BACK_FILE "/proc/xen/ps2back_"
+
+#define KBD_BUFF_SIZE 128
+
+typedef struct KBDState {
+ /* Bitmask of devices with data available. */
+ uint8_t pending_irq;
+ uint8_t current_irq;
+ int aux_fd, kbd_fd;
+ qemu_irq irq_kbd;
+ qemu_irq irq_mouse;
+
+} KBDState;
+
+KBDState kbd_state;
+
+static void kbd_host_kbd_read_data(void *opaque);
+static void kbd_host_aux_read_data(void *opaque);
+
+static void kbd_update_irq(void *opaque)
+{
+ KBDState *s = (KBDState *)opaque;
+
+ if (s->current_irq == 0)
+ {
+ if (s->pending_irq & KBD_PENDING_KBD)
+ {
+ s->current_irq = KBD_PENDING_KBD;
+ qemu_set_fd_handler(s->kbd_fd, NULL, NULL, s);
+ qemu_set_irq(s->irq_kbd, 1);
+ }
+ else if (s->pending_irq & KBD_PENDING_AUX)
+ {
+ s->current_irq = KBD_PENDING_AUX;
+ qemu_set_fd_handler(s->aux_fd, NULL, NULL, s);
+ qemu_set_irq(s->irq_mouse, 1);
+ }
+ }
+ else
+ {
+ if (s->current_irq == KBD_PENDING_KBD)
+ {
+ qemu_set_irq(s->irq_kbd, 0);
+ qemu_set_fd_handler(s->kbd_fd, kbd_host_kbd_read_data, NULL, s);
+ }
+ else if (s->current_irq == KBD_PENDING_AUX)
+ {
+ qemu_set_irq(s->irq_mouse, 0);
+ qemu_set_fd_handler(s->aux_fd, kbd_host_aux_read_data, NULL, s);
+ }
+ s->current_irq = 0;
+ s->pending_irq = 0;
+ }
+}
+
+static void kbd_update_aux_irq(void *opaque, int level)
+{
+ KBDState *s = (KBDState *)opaque;
+
+ qemu_set_irq(s->irq_mouse, level);
+}
+
+static uint32_t kbd_read_status(void *opaque, uint32_t addr)
+{
+ KBDState *s = opaque;
+ uint32_t val;
+ int fd;
+
+ if (s->current_irq & KBD_PENDING_AUX)
+ fd = s->aux_fd;
+ else
+ fd = s->kbd_fd;
+
+ ioctl(fd, IOCTL_PS2BACK_READ_CMD, &val);
+
+ DPRINTF("kbd: read cmd=0x%02x, current_irq=0x%x\n", val, s->current_irq);
+ return val;
+}
+
+static void kbd_write_command(void *opaque, uint32_t addr, uint32_t val)
+{
+ KBDState *s = opaque;
+ int fd;
+
+ DPRINTF("kbd: write cmd=0x%02x\n", val);
+ if (val == KBD_CCMD_WRITE_AUX_OBUF || val == KBD_CCMD_WRITE_MOUSE)
+ fd = s->aux_fd;
+ else
+ fd = s->kbd_fd;
+
+ if (ioctl(fd, IOCTL_PS2BACK_WRITE_CMD, &val))
+ DPRINTF("kbd: ps2back_ioctl_write_command failed\n");
+}
+
+static uint32_t kbd_read_data(void *opaque, uint32_t addr)
+{
+ KBDState *s = opaque;
+ int fd;
+ uint8_t val = 0;
+
+ if (s->current_irq == 0 || s->current_irq == KBD_PENDING_KBD)
+ fd = s->kbd_fd;
+ else
+ fd = s->aux_fd;
+
+ read(fd, &val, 1);
+ DPRINTF("kbd: read data=0x%02x, current_irq=0x%x\n", val, s->current_irq);
+
+ kbd_update_irq(s);
+ return val;
+}
+
+static void kbd_write_data(void *opaque, uint32_t addr, uint32_t val)
+{
+ KBDState *s = opaque;
+
+ DPRINTF("kbd: write data=0x%02x\n", val);
+
+ if (ioctl(s->kbd_fd, IOCTL_PS2BACK_WRITE_DATA, &val))
+ DPRINTF("kbd: ps2back_ioctl_write_data failed\n");
+}
+
+static void kbd_host_kbd_read_data(void *opaque)
+{
+ KBDState *s = opaque;
+
+ DPRINTF("Some data to read from the kbd ...\n");
+
+ s->pending_irq |= KBD_PENDING_KBD;
+ kbd_update_irq(s);
+}
+
+static void kbd_host_aux_read_data(void *opaque)
+{
+ KBDState *s = opaque;
+
+ DPRINTF("Some data to read from the aux ...\n");
+
+ s->pending_irq |= KBD_PENDING_AUX;
+ kbd_update_irq(s);
+}
+
+void pt_i8042_init(qemu_irq kbd_irq, qemu_irq mouse_irq, uint32_t io_base)
+{
+ KBDState *s = &kbd_state;
+ int rc;
+
+ memset(s, 0, sizeof (*s));
+
+ s->irq_kbd = kbd_irq;
+ s->irq_mouse = mouse_irq;
+
+ 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_fd = open(PS2BACK_FILE "kbd", O_RDONLY);
+ if (s->kbd_fd < 0)
+ {
+ DPRINTF("kbd: failed to open the proc file\n");
+ exit(2);
+ }
+ if ((rc = ioctl(s->kbd_fd, IOCTL_PS2BACK_GRAB, 1)))
+ {
+ DPRINTF("kbd: failed to grab %d\n", rc);
+ exit(2);
+ }
+ s->aux_fd = open(PS2BACK_FILE "aux", O_RDONLY);
+ if (s->aux_fd < 0)
+ {
+ DPRINTF("kbd: failed to open the proc file\n");
+ exit(2);
+ }
+ if ((rc = ioctl(s->aux_fd, IOCTL_PS2BACK_GRAB, 1)))
+ {
+ DPRINTF("kbd: failed to grab %d\n", rc);
+ exit(2);
+ }
+
+ qemu_set_fd_handler(s->kbd_fd, kbd_host_kbd_read_data, NULL, s);
+ qemu_set_fd_handler(s->aux_fd, kbd_host_aux_read_data, NULL, s);
+}
projects / xenclient / ioemu.git / commitdiff