const char *test_mapping1(void)
{
int rc;
size_t buffer1_len = BUFFER1_PAGES * PAGE_SIZE;
size_t buffer2_len = BUFFER2_PAGES * PAGE_SIZE;
void *buffer1 = create_as_area(buffer1_len);
void *buffer2 = create_as_area(buffer2_len);
if (!buffer1 || !buffer2) {
return "Cannot allocate memory";
}
touch_area(buffer1, buffer1_len);
touch_area(buffer2, buffer2_len);
/* Now verify that mapping to physical frames exist. */
if (!VERIFY_MAPPING(buffer1, BUFFER1_PAGES, EOK)) {
return "Failed to find mapping (buffer1)";
}
if (!VERIFY_MAPPING(buffer2, BUFFER2_PAGES, EOK)) {
return "Failed to find mapping (buffer2)";
}
/* Let's destroy the buffer1 area and access it again. */
rc = as_area_destroy(buffer1);
if (rc != EOK) {
return "Failed to destroy AS area";
}
if (!VERIFY_MAPPING(buffer1, BUFFER1_PAGES, ENOENT)) {
return "Mapping of destroyed area still exists";
}
/* clean-up */
rc = as_area_destroy(buffer2);
if (rc != EOK) {
return "Failed to destroy AS area";
}
return NULL;
}
/** Create a program using an existing address space.
*
* @param as Address space containing a binary program image.
* @param entry_addr Program entry-point address in program address space.
* @param name Name to set for the program's task.
* @param prg Buffer for storing program information.
*
* @return EOK on success or negative error code.
*
*/
int program_create(as_t *as, uintptr_t entry_addr, char *name, program_t *prg)
{
prg->loader_status = EE_OK;
prg->task = task_create(as, name);
if (!prg->task)
return ELIMIT;
/*
* Create the stack address space area.
*/
uintptr_t virt = USTACK_ADDRESS;
as_area_t *area = as_area_create(as,
AS_AREA_READ | AS_AREA_WRITE | AS_AREA_CACHEABLE,
STACK_SIZE, AS_AREA_ATTR_NONE, &anon_backend, NULL, &virt, 0);
if (!area) {
task_destroy(prg->task);
return ENOMEM;
}
uspace_arg_t *kernel_uarg = (uspace_arg_t *)
malloc(sizeof(uspace_arg_t), 0);
kernel_uarg->uspace_entry = (void *) entry_addr;
kernel_uarg->uspace_stack = (void *) virt;
kernel_uarg->uspace_stack_size = STACK_SIZE;
kernel_uarg->uspace_thread_function = NULL;
kernel_uarg->uspace_thread_arg = NULL;
kernel_uarg->uspace_uarg = NULL;
/*
* Create the main thread.
*/
prg->main_thread = thread_create(uinit, kernel_uarg, prg->task,
THREAD_FLAG_USPACE, "uinit");
if (!prg->main_thread) {
free(kernel_uarg);
as_area_destroy(as, virt);
task_destroy(prg->task);
return ELIMIT;
}
return EOK;
}
/** Get time of day
*
* The time variables are memory mapped (read-only) from kernel which
* updates them periodically.
*
* As it is impossible to read 2 values atomically, we use a trick:
* First we read the seconds, then we read the microseconds, then we
* read the seconds again. If a second elapsed in the meantime, set
* the microseconds to zero.
*
* This assures that the values returned by two subsequent calls
* to gettimeofday() are monotonous.
*
*/
int gettimeofday(struct timeval *tv, struct timezone *tz)
{
if (ktime == NULL) {
uintptr_t faddr;
int rc = sysinfo_get_value("clock.faddr", &faddr);
if (rc != EOK) {
errno = rc;
return -1;
}
void *addr;
rc = physmem_map((void *) faddr, 1,
AS_AREA_READ | AS_AREA_CACHEABLE, &addr);
if (rc != EOK) {
as_area_destroy(addr);
errno = rc;
return -1;
}
ktime = addr;
}
if (tz) {
tz->tz_minuteswest = 0;
tz->tz_dsttime = DST_NONE;
}
sysarg_t s2 = ktime->seconds2;
read_barrier();
tv->tv_usec = ktime->useconds;
read_barrier();
sysarg_t s1 = ktime->seconds1;
if (s1 != s2) {
tv->tv_sec = max(s1, s2);
tv->tv_usec = 0;
} else
tv->tv_sec = s1;
return 0;
}
/** Try to shrink heap
*
* Should be called only inside the critical section.
* In all cases the next pointer is reset.
*
* @param area Last modified heap area.
*
*/
static void heap_shrink(heap_area_t *area)
{
area_check(area);
heap_block_foot_t *last_foot =
(heap_block_foot_t *) AREA_LAST_BLOCK_FOOT(area);
heap_block_head_t *last_head = BLOCK_HEAD(last_foot);
block_check((void *) last_head);
malloc_assert(last_head->area == area);
if (last_head->free) {
/*
* The last block of the heap area is
* unused. The area might be potentially
* shrunk.
*/
heap_block_head_t *first_head =
(heap_block_head_t *) AREA_FIRST_BLOCK_HEAD(area);
block_check((void *) first_head);
malloc_assert(first_head->area == area);
size_t shrink_size = ALIGN_DOWN(last_head->size, PAGE_SIZE);
if (first_head == last_head) {
/*
* The entire heap area consists of a single
* free heap block. This means we can get rid
* of it entirely.
*/
heap_area_t *prev = area->prev;
heap_area_t *next = area->next;
if (prev != NULL) {
area_check(prev);
prev->next = next;
} else
first_heap_area = next;
if (next != NULL) {
area_check(next);
next->prev = prev;
} else
last_heap_area = prev;
as_area_destroy(area->start);
} else if (shrink_size >= SHRINK_GRANULARITY) {
/*
* Make sure that we always shrink the area
* by a multiple of page size and update
* the block layout accordingly.
*/
size_t asize = (size_t) (area->end - area->start) - shrink_size;
void *end = (void *) ((uintptr_t) area->start + asize);
/* Resize the address space area */
int ret = as_area_resize(area->start, asize, 0);
if (ret != EOK)
abort();
/* Update heap area parameters */
area->end = end;
size_t excess = ((size_t) area->end) - ((size_t) last_head);
if (excess > 0) {
if (excess >= STRUCT_OVERHEAD) {
/*
* The previous block cannot be free and there
* is enough free space left in the area to
* create a new free block.
*/
block_init((void *) last_head, excess, true, area);
} else {
/*
* The excess is small. Therefore just enlarge
* the previous block.
*/
heap_block_foot_t *prev_foot = (heap_block_foot_t *)
(((uintptr_t) last_head) - sizeof(heap_block_foot_t));
heap_block_head_t *prev_head = BLOCK_HEAD(prev_foot);
block_check((void *) prev_head);
block_init(prev_head, prev_head->size + excess,
prev_head->free, area);
}
}
}
}
next_fit = NULL;
}
int ega_init(void)
{
sysarg_t present;
int rc = sysinfo_get_value("fb", &present);
if (rc != EOK)
present = false;
if (!present)
return ENOENT;
sysarg_t kind;
rc = sysinfo_get_value("fb.kind", &kind);
if (rc != EOK)
kind = (sysarg_t) -1;
if (kind != 2)
return EINVAL;
sysarg_t paddr;
rc = sysinfo_get_value("fb.address.physical", &paddr);
if (rc != EOK)
return rc;
rc = sysinfo_get_value("fb.width", &ega.cols);
if (rc != EOK)
return rc;
rc = sysinfo_get_value("fb.height", &ega.rows);
if (rc != EOK)
return rc;
rc = pio_enable((void*)EGA_IO_BASE, EGA_IO_SIZE, NULL);
if (rc != EOK)
return rc;
ega.size = (ega.cols * ega.rows) << 1;
rc = physmem_map((void *) paddr,
ALIGN_UP(ega.size, PAGE_SIZE) >> PAGE_WIDTH,
AS_AREA_READ | AS_AREA_WRITE, (void *) &ega.addr);
if (rc != EOK)
return rc;
sysarg_t blinking;
rc = sysinfo_get_value("fb.blinking", &blinking);
if (rc != EOK)
blinking = false;
ega.style_normal = 0xf0;
ega.style_inverted = 0x0f;
if (blinking) {
ega.style_normal &= 0x77;
ega.style_inverted &= 0x77;
}
outdev_t *dev = outdev_register(&ega_ops, (void *) &ega);
if (dev == NULL) {
as_area_destroy(ega.addr);
return EINVAL;
}
return EOK;
}
int munmap(void *start, size_t length)
{
return as_area_destroy(start);
}
/**
* Record directly from a device to a file.
* @param device The device.
* @param file The file.
* @return Error code.
*/
int drecord(const char *device, const char *file)
{
int ret = EOK;
audio_pcm_sess_t *session = NULL;
if (str_cmp(device, "default") == 0) {
session = audio_pcm_open_default();
} else {
session = audio_pcm_open(device);
}
if (!session) {
printf("Failed to connect to device %s.\n", device);
return 1;
}
printf("Recording on device: %s.\n", device);
if (audio_pcm_query_cap(session, AUDIO_CAP_CAPTURE) <= 0) {
printf("Device %s does not support recording\n", device);
ret = ENOTSUP;
goto close_session;
}
const char* info = NULL;
ret = audio_pcm_get_info_str(session, &info);
if (ret != EOK) {
printf("Failed to get PCM info.\n");
goto close_session;
}
printf("Capturing on %s.\n", info);
free(info);
record_t rec;
record_initialize(&rec, session);
ret = audio_pcm_get_buffer(rec.device, &rec.buffer.base,
&rec.buffer.size);
if (ret != EOK) {
printf("Failed to get PCM buffer: %s.\n", str_error(ret));
goto close_session;
}
printf("Buffer: %p %zu.\n", rec.buffer.base, rec.buffer.size);
rec.file = fopen(file, "w");
if (rec.file == NULL) {
ret = ENOENT;
printf("Failed to open file: %s.\n", file);
goto cleanup;
}
wave_header_t header;
fseek(rec.file, sizeof(header), SEEK_SET);
if (ret != EOK) {
printf("Error parsing wav header\n");
goto cleanup;
}
if (audio_pcm_query_cap(rec.device, AUDIO_CAP_INTERRUPT) > 0)
record_fragment(&rec, format);
else
printf("Recording method is not supported");
//TODO consider buffer position interface
wav_init_header(&header, format, ftell(rec.file) - sizeof(header));
fseek(rec.file, 0, SEEK_SET);
fwrite(&header, sizeof(header), 1, rec.file);
cleanup:
fclose(rec.file);
as_area_destroy(rec.buffer.base);
audio_pcm_release_buffer(rec.device);
close_session:
audio_pcm_close(session);
return ret == EOK ? 0 : 1;
}