Subversion Repositories HelenOS

Rev

Rev 4251 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 4251 Rev 4311
Line 42... Line 42...
42 
#include <arch/asm.h>
 42 
#include <arch/asm.h>
43 
#include <console/chardev.h>
 43 
#include <console/chardev.h>
44 
#include <mm/slab.h>
 44 
#include <mm/slab.h>
45 
#include <ddi/device.h>
 45 
#include <ddi/device.h>
46 
 
 46 
 
47 
static indev_operations_t kbrdin_ops = {
 - 
 
48 
    .poll = NULL
 - 
 
49 
};
 - 
 
50 
 
 - 
 
51 
#define i8042_SET_COMMAND  0x60
 47 
#define i8042_SET_COMMAND  0x60
52 
#define i8042_COMMAND      0x69
 48 
#define i8042_COMMAND      0x69
53 
#define i8042_CPU_RESET    0xfe
 49 
#define i8042_CPU_RESET    0xfe
54 
 
 50 
 
55 
#define i8042_BUFFER_FULL_MASK  0x01
 51 
#define i8042_BUFFER_FULL_MASK  0x01
Line 72... Line 68...
72 
    i8042_t *dev = instance->i8042;
 68 
    i8042_t *dev = instance->i8042;
73 
    uint8_t status;
 69 
    uint8_t status;
74 
   
 70 
   
75 
    if (((status = pio_read_8(&dev->status)) & i8042_BUFFER_FULL_MASK)) {
 71 
    if (((status = pio_read_8(&dev->status)) & i8042_BUFFER_FULL_MASK)) {
76 
        uint8_t data = pio_read_8(&dev->data);
 72 
        uint8_t data = pio_read_8(&dev->data);
77 
        indev_push_character(&instance->kbrdin, data);
 73 
        indev_push_character(instance->kbrdin, data);
78 
    }
 74 
    }
79 
}
 75 
}
80 
 
 76 
 
- 
 
 77 
/**< Clear input buffer. */
- 
 
 78 
static void i8042_clear_buffer(i8042_t *dev)
- 
 
 79 
{
- 
 
 80 
    while (pio_read_8(&dev->status) & i8042_BUFFER_FULL_MASK)
- 
 
 81 
        (void) pio_read_8(&dev->data);
- 
 
 82 
}
- 
 
 83 
 
81 
/** Initialize i8042. */
 84 
/** Initialize i8042. */
82 
indev_t *i8042_init(i8042_t *dev, inr_t inr)
 85 
i8042_instance_t *i8042_init(i8042_t *dev, inr_t inr)
83 
{
 86 
{
84 
    i8042_instance_t *instance
 87 
    i8042_instance_t *instance
85 
        = malloc(sizeof(i8042_instance_t), FRAME_ATOMIC);
 88 
        = malloc(sizeof(i8042_instance_t), FRAME_ATOMIC);
86 
    if (!instance)
 89 
    if (instance) {
- 
 
 90 
        instance->i8042 = dev;
87 
        return NULL;
 91 
        instance->kbrdin = NULL;
88 
   
 92 
       
89 
    indev_initialize("i8042", &instance->kbrdin, &kbrdin_ops);
 93 
        irq_initialize(&instance->irq);
- 
 
 94 
        instance->irq.devno = device_assign_devno();
- 
 
 95 
        instance->irq.inr = inr;
- 
 
 96 
        instance->irq.claim = i8042_claim;
- 
 
 97 
        instance->irq.handler = i8042_irq_handler;
- 
 
 98 
        instance->irq.instance = instance;
- 
 
 99 
       
- 
 
 100 
    }
90 
   
 101 
   
91 
    instance->i8042 = dev;
 102 
    return instance;
- 
 
 103 
}
- 
 
 104 
 
- 
 
 105 
void i8042_wire(i8042_instance_t *instance, indev_t *kbrdin)
- 
 
 106 
{
- 
 
 107 
    ASSERT(instance);
- 
 
 108 
    ASSERT(kbrdin);
92 
   
 109 
   
93 
    irq_initialize(&instance->irq);
 - 
 
94 
    instance->irq.devno = device_assign_devno();
 - 
 
95 
    instance->irq.inr = inr;
 110 
    instance->kbrdin = kbrdin;
96 
    instance->irq.claim = i8042_claim;
 - 
 
97 
    instance->irq.handler = i8042_irq_handler;
 - 
 
98 
    instance->irq.instance = instance;
 - 
 
99 
    irq_register(&instance->irq);
 111 
    irq_register(&instance->irq);
100 
   
 - 
 
101 
    /* Clear input buffer */
 - 
 
102 
    while (pio_read_8(&dev->status) & i8042_BUFFER_FULL_MASK)
 - 
 
103 
        (void) pio_read_8(&dev->data);
 - 
 
104 
   
 - 
 
105 
    return &instance->kbrdin;
 112 
    i8042_clear_buffer(instance->i8042);
106 
}
 113 
}
107 
 
 114 
 
108 
/* Reset CPU by pulsing pin 0 */
 115 
/* Reset CPU by pulsing pin 0 */
109 
void i8042_cpu_reset(i8042_t *dev)
 116 
void i8042_cpu_reset(i8042_t *dev)
110 
{
 117 
{
111 
    interrupts_disable();
 118 
    interrupts_disable();
112 
   
 119 
   
113 
    /* Clear input buffer */
 120 
    i8042_clear_buffer(dev);
114 
    while (pio_read_8(&dev->status) & i8042_BUFFER_FULL_MASK)
 - 
 
115 
        (void) pio_read_8(&dev->data);
 - 
 
116 
   
 121 
   
117 
    /* Reset CPU */
 122 
    /* Reset CPU */
118 
    pio_write_8(&dev->status, i8042_CPU_RESET);
 123 
    pio_write_8(&dev->status, i8042_CPU_RESET);
119 
}
 124 
}
120 
 
 125