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#include <genarch/kbd/i8042.h>
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#include <genarch/kbd/i8042.h>
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#include <genarch/kbd/key.h>
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#include <genarch/kbd/key.h>
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#include <genarch/kbd/scanc.h>
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#include <genarch/kbd/scanc.h>
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#include <genarch/kbd/scanc_pc.h>
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#include <genarch/kbd/scanc_pc.h>
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#include <arch/drivers/i8042.h>
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#include <arch/drivers/i8042.h>
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#include <arch/interrupt.h>
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#include <cpu.h>
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#include <cpu.h>
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#include <arch/asm.h>
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#include <arch/asm.h>
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#include <arch.h>
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#include <arch.h>
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#include <typedefs.h>
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#include <typedefs.h>
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#include <console/chardev.h>
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#include <console/chardev.h>
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#include <console/console.h>
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#include <console/console.h>
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#include <interrupt.h>
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#include <interrupt.h>
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#include <sysinfo/sysinfo.h>
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#include <ddi/irq.h>
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53 
/* Keyboard commands. */
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/* Keyboard commands. */
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#define KBD_ENABLE  0xf4
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#define KBD_ENABLE  0xf4
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#define KBD_DISABLE 0xf5
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#define KBD_DISABLE 0xf5
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#define KBD_ACK     0xfa
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#define KBD_ACK     0xfa
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    .suspend = i8042_suspend,
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    .suspend = i8042_suspend,
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    .resume = i8042_resume,
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    .resume = i8042_resume,
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    .read = i8042_key_read
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    .read = i8042_key_read
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};
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};
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 89 
 
- 
 
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/** Structure for i8042's IRQ. */
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static irq_t i8042_irq;
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static void i8042_interrupt(int n, istate_t *istate);
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/** Wait until the controller reads its data. */
90 
static void i8042_wait(void);
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static void i8042_wait(void) {
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 95 
    while (i8042_status_read() & i8042_WAIT_MASK) {
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        /* wait */
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    }
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}
91 
 
 99 
 
92 
static iroutine oldvector;
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93 
/** Initialize keyboard and service interrupts using kernel routine */
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94 
void i8042_grab(void)
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void i8042_grab(void)
95 
{
 101 
{
96 
    oldvector = exc_register(VECTOR_KBD, "i8042_interrupt", (iroutine) i8042_interrupt);
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    ipl_t ipl = interrupts_disable();
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 103 
   
97 
    i8042_wait();
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    i8042_wait();
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    i8042_command_write(i8042_SET_COMMAND);
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    i8042_command_write(i8042_SET_COMMAND);
99 
    i8042_wait();
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    i8042_wait();
100 
    i8042_data_write(i8042_COMMAND);
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    i8042_data_write(i8042_COMMAND);
101 
    i8042_wait();
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    i8042_wait();
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    spinlock_lock(&i8042_irq.lock);
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    i8042_irq.notif_cfg.notify = false;
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    spinlock_unlock(&i8042_irq.lock);
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 113 
    interrupts_restore(ipl);
102 
}
 114 
}
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/** Resume the former interrupt vector */
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 115 
 
104 
void i8042_release(void)
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void i8042_release(void)
105 
{
 117 
{
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 118 
    ipl_t ipl = interrupts_disable();
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    spinlock_lock(&i8042_irq.lock);
106 
    if (oldvector)
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    if (i8042_irq.notif_cfg.answerbox)
107 
        exc_register(VECTOR_KBD, "user_interrupt", oldvector);
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        i8042_irq.notif_cfg.notify = true;
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    spinlock_unlock(&i8042_irq.lock);
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    interrupts_restore(ipl);
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}
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}
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110 
/** Initialize i8042. */
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void i8042_init(void)
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static irq_ownership_t i8042_claim(void)
112 
{
 127 
{
113 
    int i;
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    return IRQ_ACCEPT;
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}
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static void i8042_irq_handler(irq_t *irq, void *arg, ...)
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{
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    if (irq->notif_cfg.notify && irq->notif_cfg.answerbox)
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        ipc_irq_send_notif(irq);
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    else {
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        uint8_t x;
115 
    i8042_grab();
 137 
        uint8_t status;
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116 
        /* Prevent user from accidentaly releasing calling i8042_resume
 139 
        while (((status = i8042_status_read()) & i8042_BUFFER_FULL_MASK)) {
117 
     * and disabling keyboard
 140 
            x = i8042_data_read();
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 141 
           
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 142 
            if ((status & i8042_MOUSE_DATA))
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 143 
                continue;
118 
     */
 144 
           
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            if (x & KEY_RELEASE)
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                key_released(x ^ KEY_RELEASE);
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            else
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    oldvector = NULL;
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                key_pressed(x);
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        }
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 150 
    }
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}
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 152 
 
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/** Initialize i8042. */
121 
    trap_virtual_enable_irqs(1<<IRQ_KBD);
 154 
void i8042_init(devno_t devno, inr_t inr)
- 
 
 155 
{
122 
    chardev_initialize("i8042_kbd", &kbrd, &ops);
 156 
    chardev_initialize("i8042_kbd", &kbrd, &ops);
123 
    stdin = &kbrd;
 157 
    stdin = &kbrd;
124 
 
 158 
   
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 159 
    irq_initialize(&i8042_irq);
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 160 
    i8042_irq.devno = devno;
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 161 
    i8042_irq.inr = inr;
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 162 
    i8042_irq.claim = i8042_claim;
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 163 
    i8042_irq.handler = i8042_irq_handler;
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 164 
    irq_register(&i8042_irq);
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 165 
   
- 
 
 166 
    trap_virtual_enable_irqs(1 << inr);
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 167 
   
125 
    /*
 168 
    /*
126 
     * Clear input buffer.
 169 
     * Clear input buffer.
127 
     * Number of iterations is limited to prevent infinite looping.
 170 
     * Number of iterations is limited to prevent infinite looping.
128 
     */
 171 
     */
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 172 
    int i;
129 
    for (i = 0; (i8042_status_read() & i8042_BUFFER_FULL_MASK) && i < 100; i++) {
 173 
    for (i = 0; (i8042_status_read() & i8042_BUFFER_FULL_MASK) && i < 100; i++) {
130 
        i8042_data_read();
 174 
        i8042_data_read();
131 
    }  
 - 
 
132 
}
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133 
 
 - 
 
134 
/** Process i8042 interrupt.
 - 
 
135 
 *
 - 
 
136 
 * @param n Interrupt vector.
 - 
 
137 
 * @param istate Interrupted state.
 - 
 
138 
 */
 - 
 
139 
void i8042_interrupt(int n, istate_t *istate)
 - 
 
140 
{
 - 
 
141 
    uint8_t x;
 - 
 
142 
    uint8_t status;
 - 
 
143 
 
 - 
 
144 
    while (((status=i8042_status_read()) & i8042_BUFFER_FULL_MASK)) {
 - 
 
145 
        x = i8042_data_read();
 - 
 
146 
 
 - 
 
147 
        if ((status & i8042_MOUSE_DATA))
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148 
            continue;
 - 
 
149 
 
 - 
 
150 
        if (x & KEY_RELEASE)
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151 
            key_released(x ^ KEY_RELEASE);
 - 
 
152 
        else
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153 
            key_pressed(x);
 - 
 
154 
    }
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155 
    trap_virtual_eoi();
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156 
}
 - 
 
157 
 
 - 
 
158 
/** Wait until the controller reads its data. */
 - 
 
159 
void i8042_wait(void) {
 - 
 
160 
    while (i8042_status_read() & i8042_WAIT_MASK) {
 - 
 
161 
        /* wait */
 - 
 
162 
    }
 175 
    }
- 
 
 176 
   
- 
 
 177 
    sysinfo_set_item_val("kbd", NULL, true);
- 
 
 178 
    sysinfo_set_item_val("kbd.devno", NULL, devno);
- 
 
 179 
    sysinfo_set_item_val("kbd.inr", NULL, inr);
- 
 
 180 
   
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 181 
    i8042_grab();
163 
}
 182 
}
164 
 
 183 
 
165 
/* Called from getc(). */
 184 
/* Called from getc(). */
166 
void i8042_resume(chardev_t *d)
 185 
void i8042_resume(chardev_t *d)
167 
{
 186 
{