51,20 → 51,12 |
#define KEYBOARD_POLL_PAUSE 50000 /* 50ms */ |
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static void ofw_sparc64_putchar(chardev_t *d, const char ch); |
static char ofw_sparc64_getchar(chardev_t *d); |
static void ofw_sparc64_suspend(chardev_t *d); |
static void ofw_sparc64_resume(chardev_t *d); |
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mutex_t canwork; |
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static volatile int ofw_console_active; |
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static chardev_t ofw_sparc64_console; |
static chardev_operations_t ofw_sparc64_console_ops = { |
.write = ofw_sparc64_putchar, |
.read = ofw_sparc64_getchar, |
.resume = ofw_sparc64_resume, |
.suspend = ofw_sparc64_suspend |
}; |
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/** Initialize kernel console to use OpenFirmware services. */ |
71,9 → 63,8 |
void ofw_sparc64_console_init(void) |
{ |
chardev_initialize("ofw_sparc64_console", &ofw_sparc64_console, &ofw_sparc64_console_ops); |
stdin = &ofw_sparc64_console; |
stdin = NULL; |
stdout = &ofw_sparc64_console; |
mutex_initialize(&canwork); |
ofw_console_active = 1; |
} |
|
94,83 → 85,11 |
*/ |
void ofw_sparc64_putchar(chardev_t *d, const char ch) |
{ |
pstate_reg_t pstate; |
|
/* |
* 32-bit OpenFirmware depends on PSTATE.AM bit set. |
*/ |
pstate.value = pstate_read(); |
pstate.am = true; |
pstate_write(pstate.value); |
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if (ch == '\n') |
ofw_putchar('\r'); |
ofw_putchar(ch); |
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pstate.am = false; |
pstate_write(pstate.value); |
} |
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/** Read one character using OpenFirmware. |
* |
* The call is non-blocking. |
* |
* @param d Character device (ignored). |
* @return Character read or zero if no character was read. |
*/ |
char ofw_sparc64_getchar(chardev_t *d) |
{ |
char ch; |
pstate_reg_t pstate; |
|
/* |
* 32-bit OpenFirmware depends on PSTATE.AM bit set. |
*/ |
pstate.value = pstate_read(); |
pstate.am = true; |
pstate_write(pstate.value); |
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ch = ofw_getchar(); |
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pstate.am = false; |
pstate_write(pstate.value); |
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return ch; |
} |
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void ofw_sparc64_suspend(chardev_t *d) |
{ |
mutex_lock(&canwork); |
} |
|
void ofw_sparc64_resume(chardev_t *d) |
{ |
mutex_unlock(&canwork); |
} |
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/** Kernel thread for pushing characters read from OFW to input buffer. |
* |
* @param arg Ignored. |
*/ |
void kofwinput(void *arg) |
{ |
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while (ofw_console_active) { |
char ch = 0; |
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mutex_lock(&canwork); |
mutex_unlock(&canwork); |
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ch = ofw_sparc64_getchar(NULL); |
if (ch) { |
if (ch == '\r') |
ch = '\n'; |
chardev_push_character(&ofw_sparc64_console, ch); |
} |
thread_usleep(KEYBOARD_POLL_PAUSE); |
} |
} |
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/** Kernel thread for polling keyboard. |
* |
* @param arg Ignored. |