Subversion Repositories HelenOS

Rev

Rev 1921 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 1921 Rev 1931
Line 36... Line 36...
36 
 
 36 
 
37 
#include <genarch/kbd/ns16550.h>
 37 
#include <genarch/kbd/ns16550.h>
38 
#include <genarch/kbd/key.h>
 38 
#include <genarch/kbd/key.h>
39 
#include <genarch/kbd/scanc.h>
 39 
#include <genarch/kbd/scanc.h>
40 
#include <genarch/kbd/scanc_sun.h>
 40 
#include <genarch/kbd/scanc_sun.h>
- 
 
 41 
#include <arch/drivers/kbd.h>
41 
#include <arch/drivers/ns16550.h>
 42 
#include <arch/drivers/ns16550.h>
42 
#include <ddi/irq.h>
 43 
#include <ddi/irq.h>
43 
#include <arch/interrupt.h>
 44 
#include <ipc/irq.h>
44 
#include <cpu.h>
 45 
#include <cpu.h>
45 
#include <arch/asm.h>
 46 
#include <arch/asm.h>
46 
#include <arch.h>
 47 
#include <arch.h>
47 
#include <typedefs.h>
 48 
#include <typedefs.h>
48 
#include <console/chardev.h>
 49 
#include <console/chardev.h>
49 
#include <console/console.h>
 50 
#include <console/console.h>
50 
#include <interrupt.h>
 51 
#include <interrupt.h>
- 
 
 52 
#include <arch/interrupt.h>
51 
#include <sysinfo/sysinfo.h>
 53 
#include <sysinfo/sysinfo.h>
- 
 
 54 
#include <synch/spinlock.h>
52 
 
 55 
 
53 
#define LSR_DATA_READY  0x01
 56 
#define LSR_DATA_READY  0x01
54 
 
 57 
 
55 
/** Structure representing the ns16550. */
 58 
/** Structure representing the ns16550. */
56 
static ns16550_t ns16550;
 59 
static ns16550_t ns16550;
57 
 
 60 
 
58 
/** Structure for ns16550's IRQ. */
 61 
/** Structure for ns16550's IRQ. */
59 
static irq_t ns16550_irq;
 62 
static irq_t ns16550_irq;
60 
 
 63 
 
- 
 
 64 
static ipc_notif_cfg_t saved_notif_cfg;
- 
 
 65 
 
61 
/*
 66 
/*
62 
 * These codes read from ns16550 data register are silently ignored.
 67 
 * These codes read from ns16550 data register are silently ignored.
63 
 */
 68 
 */
64 
#define IGNORE_CODE 0x7f        /* all keys up */
 69 
#define IGNORE_CODE 0x7f        /* all keys up */
65 
 
 70 
 
Line 70... Line 75...
70 
    .suspend = ns16550_suspend,
 75 
    .suspend = ns16550_suspend,
71 
    .resume = ns16550_resume,
 76 
    .resume = ns16550_resume,
72 
    .read = ns16550_key_read
 77 
    .read = ns16550_key_read
73 
};
 78 
};
74 
 
 79 
 
75 
void ns16550_interrupt(int n, istate_t *istate);
 - 
 
76 
void ns16550_wait(void);
 80 
void ns16550_interrupt(void);
77 
 
 81 
 
78 
/** Initialize keyboard and service interrupts using kernel routine */
 82 
/** Initialize keyboard and service interrupts using kernel routine */
79 
void ns16550_grab(void)
 83 
void ns16550_grab(void)
80 
{
 84 
{
- 
 
 85 
    ns16550_ier_write(&ns16550, IER_ERBFI);     /* enable receiver interrupt */
- 
 
 86 
   
- 
 
 87 
    while (ns16550_lsr_read(&ns16550) & LSR_DATA_READY)
- 
 
 88 
        (void) ns16550_rbr_read(&ns16550);
- 
 
 89 
 
- 
 
 90 
    if (ns16550_irq.notif_cfg.answerbox) {
- 
 
 91 
        saved_notif_cfg = ns16550_irq.notif_cfg;
- 
 
 92 
        ns16550_irq.notif_cfg.answerbox = NULL;
- 
 
 93 
        ns16550_irq.notif_cfg.code = NULL;
- 
 
 94 
        ns16550_irq.notif_cfg.method = 0;
- 
 
 95 
        ns16550_irq.notif_cfg.counter = 0;
81 
    /* TODO */
 96 
    }
82 
}
 97 
}
83 
 
 98 
 
84 
/** Resume the former interrupt vector */
 99 
/** Resume the former interrupt vector */
85 
void ns16550_release(void)
 100 
void ns16550_release(void)
86 
{
 101 
{
87 
    /* TODO */
 102 
    if (saved_notif_cfg.answerbox)
- 
 
 103 
        ns16550_irq.notif_cfg = saved_notif_cfg;
88 
}
 104 
}
89 
 
 105 
 
90 
/** Initialize ns16550.
 106 
/** Initialize ns16550.
91 
 *
 107 
 *
92 
 * @param devno Device number.
 108 
 * @param devno Device number.
93 
 * @param inr Interrupt number.
 109 
 * @param inr Interrupt number.
94 
 * @param vaddr Virtual address of device's registers.
 110 
 * @param vaddr Virtual address of device's registers.
95 
 */
 111 
 */
96 
void ns16550_init(devno_t devno, inr_t inr, uintptr_t vaddr)
 112 
void ns16550_init(devno_t devno, inr_t inr, uintptr_t vaddr)
97 
{
 113 
{
98 
    ns16550_grab();
 - 
 
99 
    chardev_initialize("ns16550_kbd", &kbrd, &ops);
 114 
    chardev_initialize("ns16550_kbd", &kbrd, &ops);
100 
    stdin = &kbrd;
 115 
    stdin = &kbrd;
101 
   
 116 
   
102 
    ns16550.devno = devno;
 117 
    ns16550.devno = devno;
103 
    ns16550.reg = (uint8_t *) vaddr;
 118 
    ns16550.reg = (uint8_t *) vaddr;
Line 108... Line 123...
108 
    ns16550_irq.claim = ns16550_claim;
 123 
    ns16550_irq.claim = ns16550_claim;
109 
    ns16550_irq.handler = ns16550_irq_handler;
 124 
    ns16550_irq.handler = ns16550_irq_handler;
110 
    irq_register(&ns16550_irq);
 125 
    irq_register(&ns16550_irq);
111 
   
 126 
   
112 
    sysinfo_set_item_val("kbd", NULL, true);
 127 
    sysinfo_set_item_val("kbd", NULL, true);
- 
 
 128 
    sysinfo_set_item_val("kbd.type", NULL, KBD_NS16550);
113 
    sysinfo_set_item_val("kbd.devno", NULL, devno);
 129 
    sysinfo_set_item_val("kbd.devno", NULL, devno);
114 
    sysinfo_set_item_val("kbd.inr", NULL, inr);
 130 
    sysinfo_set_item_val("kbd.inr", NULL, inr);
115 
    sysinfo_set_item_val("kbd.address.virtual", NULL, vaddr);
 131 
    sysinfo_set_item_val("kbd.address.virtual", NULL, vaddr);
116 
   
 132 
   
117 
    ns16550_ier_write(&ns16550, IER_ERBFI);     /* enable receiver interrupt */
 - 
 
118 
   
 - 
 
119 
    while (ns16550_lsr_read(&ns16550) & LSR_DATA_READY)
 - 
 
120 
        (void) ns16550_rbr_read(&ns16550);
 133 
    ns16550_grab();
121 
}
 - 
 
122 
 
 - 
 
123 
/** Process ns16550 interrupt.
 - 
 
124 
 *
 - 
 
125 
 * @param n Interrupt vector.
 - 
 
126 
 * @param istate Interrupted state.
 - 
 
127 
 */
 - 
 
128 
void ns16550_interrupt(int n, istate_t *istate)
 - 
 
129 
{
 - 
 
130 
    /* TODO */
 - 
 
131 
}
 134 
}
132 
 
 135 
 
133 
/** Wait until the controller reads its data. */
 136 
/** Process ns16550 interrupt. */
134 
void ns16550_wait(void)
 137 
void ns16550_interrupt(void)
135 
{
 138 
{
- 
 
 139 
    /* TODO
- 
 
 140 
     *
- 
 
 141 
     * ns16550 works in the polled mode so far.
- 
 
 142 
     */
136 
}
 143 
}
137 
 
 144 
 
138 
/* Called from getc(). */
 145 
/* Called from getc(). */
139 
void ns16550_resume(chardev_t *d)
 146 
void ns16550_resume(chardev_t *d)
140 
{
 147 
{
Line 168... Line 175...
168 
 *
 175 
 *
169 
 * This function can be used to implement keyboard polling.
 176 
 * This function can be used to implement keyboard polling.
170 
 */
 177 
 */
171 
void ns16550_poll(void)
 178 
void ns16550_poll(void)
172 
{
 179 
{
173 
    uint8_t x;
 180 
    ipl_t ipl;
- 
 
 181 
 
- 
 
 182 
    ipl = interrupts_disable();
- 
 
 183 
    spinlock_lock(&ns16550_irq.lock);
- 
 
 184 
 
- 
 
 185 
    if (ns16550_lsr_read(&ns16550) & LSR_DATA_READY) {
- 
 
 186 
        if (ns16550_irq.notif_cfg.answerbox) {
- 
 
 187 
            /*
- 
 
 188 
             * Send IPC notification.
- 
 
 189 
             */
- 
 
 190 
            ipc_irq_send_notif(&ns16550_irq);
- 
 
 191 
            spinlock_unlock(&ns16550_irq.lock);
- 
 
 192 
            interrupts_restore(ipl);
- 
 
 193 
            return;
- 
 
 194 
        }
- 
 
 195 
    }
- 
 
 196 
 
- 
 
 197 
    spinlock_unlock(&ns16550_irq.lock);
- 
 
 198 
    interrupts_restore(ipl);
174 
 
 199 
 
175 
    while (ns16550_lsr_read(&ns16550) & LSR_DATA_READY) {
 200 
    while (ns16550_lsr_read(&ns16550) & LSR_DATA_READY) {
- 
 
 201 
        uint8_t x;
- 
 
 202 
       
176 
        x = ns16550_rbr_read(&ns16550);
 203 
        x = ns16550_rbr_read(&ns16550);
177 
        if (x != IGNORE_CODE) {
 204 
        if (x != IGNORE_CODE) {
178 
            if (x & KEY_RELEASE)
 205 
            if (x & KEY_RELEASE)
179 
                key_released(x ^ KEY_RELEASE);
 206 
                key_released(x ^ KEY_RELEASE);
180 
            else
 207 
            else
Line 183... Line 210...
183 
    }
 210 
    }
184 
}
 211 
}
185 
 
 212 
 
186 
irq_ownership_t ns16550_claim(void)
 213 
irq_ownership_t ns16550_claim(void)
187 
{
 214 
{
188 
    /* TODO */
 - 
 
189 
    return IRQ_ACCEPT;
 215 
    return (ns16550_lsr_read(&ns16550) & LSR_DATA_READY);
190 
}
 216 
}
191 
 
 217 
 
192 
void ns16550_irq_handler(irq_t *irq, void *arg, ...)
 218 
void ns16550_irq_handler(irq_t *irq, void *arg, ...)
193 
{
 219 
{
194 
    panic("Not yet implemented.\n");
 220 
    panic("Not yet implemented, ns16550 works in polled mode.\n");
195 
}
 221 
}
196 
 
 222 
 
197 
/** @}
 223 
/** @}
198 
 */
 224 
 */