Subversion Repositories HelenOS

Rev

Rev 4153 | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 4153 Rev 4327
Line 39... Line 39...
39
#include <ddi/irq.h>
39
#include <ddi/irq.h>
40
#include <arch/asm.h>
40
#include <arch/asm.h>
41
#include <mm/slab.h>
41
#include <mm/slab.h>
42
#include <ddi/device.h>
42
#include <ddi/device.h>
43
 
43
 
44
static indev_operations_t kbrdin_ops = {
-
 
45
    .poll = NULL
-
 
46
};
-
 
47
 
-
 
48
static inline void z8530_write(ioport8_t *ctl, uint8_t reg, uint8_t val)
44
static inline void z8530_write(ioport8_t *ctl, uint8_t reg, uint8_t val)
49
{
45
{
50
    /*
46
    /*
51
     * Registers 8-15 will automatically issue the Point High
47
     * Registers 8-15 will automatically issue the Point High
52
     * command as their bit 3 is 1.
48
     * command as their bit 3 is 1.
Line 80... Line 76...
80
{
76
{
81
    z8530_instance_t *instance = irq->instance;
77
    z8530_instance_t *instance = irq->instance;
82
    z8530_t *dev = instance->z8530;
78
    z8530_t *dev = instance->z8530;
83
   
79
   
84
    if (z8530_read(&dev->ctl_a, RR0) & RR0_RCA) {
80
    if (z8530_read(&dev->ctl_a, RR0) & RR0_RCA) {
85
        uint8_t x = z8530_read(&dev->ctl_a, RR8);
81
        uint8_t data = z8530_read(&dev->ctl_a, RR8);
86
        indev_push_character(&instance->kbrdin, x);
82
        indev_push_character(instance->kbrdin, data);
87
    }
83
    }
88
}
84
}
89
 
85
 
90
/** Initialize z8530. */
86
/** Initialize z8530. */
91
indev_t *z8530_init(z8530_t *dev, inr_t inr, cir_t cir, void *cir_arg)
87
z8530_instance_t *z8530_init(z8530_t *dev, inr_t inr, cir_t cir, void *cir_arg)
92
{
88
{
93
    z8530_instance_t *instance
89
    z8530_instance_t *instance
94
        = malloc(sizeof(z8530_instance_t), FRAME_ATOMIC);
90
        = malloc(sizeof(z8530_instance_t), FRAME_ATOMIC);
95
    if (!instance)
91
    if (instance) {
-
 
92
        instance->z8530 = dev;
-
 
93
        instance->kbrdin = NULL;
-
 
94
       
-
 
95
        irq_initialize(&instance->irq);
-
 
96
        instance->irq.devno = device_assign_devno();
96
        return false;
97
        instance->irq.inr = inr;
-
 
98
        instance->irq.claim = z8530_claim;
-
 
99
        instance->irq.handler = z8530_irq_handler;
-
 
100
        instance->irq.instance = instance;
-
 
101
        instance->irq.cir = cir;
-
 
102
        instance->irq.cir_arg = cir_arg;
-
 
103
    }
97
   
104
   
-
 
105
    return instance;
-
 
106
}
-
 
107
 
98
    indev_initialize("z8530", &instance->kbrdin, &kbrdin_ops);
108
void z8530_wire(z8530_instance_t *instance, indev_t *kbrdin)
-
 
109
{
-
 
110
    ASSERT(instance);
-
 
111
    ASSERT(kbrdin);
99
   
112
   
100
    instance->z8530 = dev;
113
    instance->kbrdin = kbrdin;
101
   
114
   
102
    irq_initialize(&instance->irq);
-
 
103
    instance->irq.devno = device_assign_devno();
-
 
104
    instance->irq.inr = inr;
-
 
105
    instance->irq.claim = z8530_claim;
-
 
106
    instance->irq.handler = z8530_irq_handler;
-
 
107
    instance->irq.instance = instance;
-
 
108
    instance->irq.cir = cir;
-
 
109
    instance->irq.cir_arg = cir_arg;
-
 
110
    irq_register(&instance->irq);
115
    irq_register(&instance->irq);
111
   
116
   
112
    (void) z8530_read(&dev->ctl_a, RR8);
117
    (void) z8530_read(&instance->z8530->ctl_a, RR8);
113
   
118
   
114
    /*
119
    /*
115
     * Clear any pending TX interrupts or we never manage
120
     * Clear any pending TX interrupts or we never manage
116
     * to set FHC UART interrupt state to idle.
121
     * to set FHC UART interrupt state to idle.
117
     */
122
     */
118
    z8530_write(&dev->ctl_a, WR0, WR0_TX_IP_RST);
123
    z8530_write(&instance->z8530->ctl_a, WR0, WR0_TX_IP_RST);
119
   
124
   
120
    /* interrupt on all characters */
125
    /* interrupt on all characters */
121
    z8530_write(&dev->ctl_a, WR1, WR1_IARCSC);
126
    z8530_write(&instance->z8530->ctl_a, WR1, WR1_IARCSC);
122
   
127
   
123
    /* 8 bits per character and enable receiver */
128
    /* 8 bits per character and enable receiver */
124
    z8530_write(&dev->ctl_a, WR3, WR3_RX8BITSCH | WR3_RX_ENABLE);
129
    z8530_write(&instance->z8530->ctl_a, WR3, WR3_RX8BITSCH | WR3_RX_ENABLE);
125
   
130
   
126
    /* Master Interrupt Enable. */
131
    /* Master Interrupt Enable. */
127
    z8530_write(&dev->ctl_a, WR9, WR9_MIE);
132
    z8530_write(&instance->z8530->ctl_a, WR9, WR9_MIE);
128
   
-
 
129
    return &instance->kbrdin;
-
 
130
}
133
}
131
 
134
 
132
/** @}
135
/** @}
133
 */
136
 */