static void aspeed_timer_expire(void *opaque)
{
AspeedTimer *t = opaque;
bool interrupt = false;
uint32_t ticks;
if (!timer_enabled(t)) {
return;
}
ticks = calculate_ticks(t, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
if (!ticks) {
interrupt = timer_overflow_interrupt(t) || !t->match[0] || !t->match[1];
} else if (ticks <= MIN(t->match[0], t->match[1])) {
interrupt = true;
} else if (ticks <= MAX(t->match[0], t->match[1])) {
interrupt = true;
}
if (interrupt) {
t->level = !t->level;
qemu_set_irq(t->irq, t->level);
}
aspeed_timer_mod(t);
}
static int
calculate_log_ticks (double min, double max, double distance, TICKS * ticks)
{ int k = 0 ; /* Number of ticks we have placed in "ticks" array */
double underpinning ; /* Largest power of ten that is <= min */
/* If the interval is less than a decade, just apply the same
** numbering-choosing scheme as used with linear axis, with the
** ticks positioned logarithmically.
*/
if (max / min < 10.0)
return calculate_ticks (min, max, distance, 2, ticks) ;
/* If the range is greater than 1 to 1000000, it will generate more than
** 19 ticks. Better to fail explicitly than to overflow.
*/
if (max / min > 1000000)
{ printf ("Error: Frequency range is too great for logarithmic scale.\n") ;
exit (1) ;
} ;
/* First hack: label the powers of ten. */
/* Find largest power of ten that is <= minimum value */
underpinning = pow (10.0, floor (log10 (min))) ;
/* Go powering up by 10 from there, numbering as we go. */
k = add_log_ticks (min, max, distance, ticks, k, underpinning, true) ;
/* Do we have enough numbers? If so, add numberless ticks at 2 and 5 */
if (k >= TARGET_DIVISIONS + 1) /* Number of labels is n.of divisions + 1 */
{
k = add_log_ticks (min, max, distance, ticks, k, underpinning * 2.0, false) ;
k = add_log_ticks (min, max, distance, ticks, k, underpinning * 5.0, false) ;
}
else
{ int i ;
/* Not enough numbers: add numbered ticks at 2 and 5 and
* unnumbered ticks at all the rest */
for (i = 2 ; i <= 9 ; i++)
k = add_log_ticks (min, max, distance, ticks, k,
underpinning * (1.0 * i), i == 2 || i == 5) ;
} ;
/* Greatest possible number of ticks calculation:
** The worst case is when the else clause adds 8 ticks with the maximal
** number of divisions, which is when k == TARGET_DIVISIONS, 3,
** for example 100, 1000, 10000.
** The else clause adds another 8 ticks inside each division as well as
** up to 8 ticks after the last number (from 20000 to 90000)
** and 8 before to the first (from 20 to 90 in the example).
** Maximum possible ticks is 3+8+8+8+8=35
*/
return k ;
} /* calculate_log_ticks */
static void aspeed_timer_set_value(AspeedTimerCtrlState *s, int timer, int reg,
uint32_t value)
{
AspeedTimer *t;
uint32_t old_reload;
trace_aspeed_timer_set_value(timer, reg, value);
t = &s->timers[timer];
switch (reg) {
case TIMER_REG_RELOAD:
old_reload = t->reload;
t->reload = value;
/* If the reload value was not previously set, or zero, and
* the current value is valid, try to start the timer if it is
* enabled.
*/
if (old_reload || !t->reload) {
break;
}
case TIMER_REG_STATUS:
if (timer_enabled(t)) {
uint64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
int64_t delta = (int64_t) value - (int64_t) calculate_ticks(t, now);
uint32_t rate = calculate_rate(t);
t->start += muldiv64(delta, NANOSECONDS_PER_SECOND, rate);
aspeed_timer_mod(t);
}
break;
case TIMER_REG_MATCH_FIRST:
case TIMER_REG_MATCH_SECOND:
t->match[reg - 2] = value;
if (timer_enabled(t)) {
aspeed_timer_mod(t);
}
break;
default:
qemu_log_mask(LOG_UNIMP, "%s: Programming error: unexpected reg: %d\n",
__func__, reg);
break;
}
}
static void
render_heat_border (cairo_surface_t * surface, double magfloor, const RECT *r)
{
const char *decibels = "dB" ;
char text [512] ;
cairo_t * cr ;
cairo_text_extents_t extents ;
TICKS ticks ;
int k, tick_count ;
cr = cairo_create (surface) ;
cairo_set_source_rgb (cr, 1.0, 1.0, 1.0) ;
cairo_set_line_width (cr, BORDER_LINE_WIDTH) ;
/* Border around actual spectrogram. */
cairo_rectangle (cr, r->left, r->top, r->width, r->height) ;
cairo_stroke (cr) ;
cairo_select_font_face (cr, font_family, CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL) ;
cairo_set_font_size (cr, 1.0 * NORMAL_FONT_SIZE) ;
cairo_text_extents (cr, decibels, &extents) ;
cairo_move_to (cr, r->left + (r->width - extents.width) / 2, r->top - 5) ;
cairo_show_text (cr, decibels) ;
tick_count = calculate_ticks (0.0, fabs (magfloor), r->height, false, &ticks) ;
for (k = 0 ; k < tick_count ; k++)
{ x_line (cr, r->left + r->width, r->top + ticks.distance [k], TICK_LEN) ;
if (JUST_A_TICK (ticks, k))
continue ;
str_print_value (text, sizeof (text), -1.0 * ticks.value [k],
ticks.decimal_places_to_print) ;
cairo_text_extents (cr, text, &extents) ;
cairo_move_to (cr, r->left + r->width + 2 * TICK_LEN, r->top + ticks.distance [k] + extents.height / 4.5) ;
cairo_show_text (cr, text) ;
} ;
cairo_destroy (cr) ;
} /* render_heat_border */
static uint64_t aspeed_timer_get_value(AspeedTimer *t, int reg)
{
uint64_t value;
switch (reg) {
case TIMER_REG_STATUS:
value = calculate_ticks(t, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
break;
case TIMER_REG_RELOAD:
value = t->reload;
break;
case TIMER_REG_MATCH_FIRST:
case TIMER_REG_MATCH_SECOND:
value = t->match[reg - 2];
break;
default:
qemu_log_mask(LOG_UNIMP, "%s: Programming error: unexpected reg: %d\n",
__func__, reg);
value = 0;
break;
}
return value;
}
static void
render_spect_border (cairo_surface_t * surface, const char * filename, double left, double width, double seconds, double top, double height, double min_freq, double max_freq, bool log_freq)
{
char text [512] ;
cairo_t * cr ;
cairo_text_extents_t extents ;
cairo_matrix_t matrix ;
TICKS ticks ;
int k, tick_count ;
cr = cairo_create (surface) ;
cairo_set_source_rgb (cr, 1.0, 1.0, 1.0) ;
cairo_set_line_width (cr, BORDER_LINE_WIDTH) ;
/* Print title. */
cairo_select_font_face (cr, font_family, CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL) ;
cairo_set_font_size (cr, 1.0 * TITLE_FONT_SIZE) ;
snprintf (text, sizeof (text), "Spectrogram: %s", filename) ;
cairo_text_extents (cr, text, &extents) ;
cairo_move_to (cr, left + 2, top - extents.height / 2) ;
cairo_show_text (cr, text) ;
/* Print labels. */
cairo_select_font_face (cr, font_family, CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL) ;
cairo_set_font_size (cr, 1.0 * NORMAL_FONT_SIZE) ;
/* Border around actual spectrogram. */
cairo_rectangle (cr, left, top, width, height) ;
/* Put ticks on Time axis */
tick_count = calculate_ticks (0.0, seconds, width, false, &ticks) ;
for (k = 0 ; k < tick_count ; k++)
{ y_line (cr, left + ticks.distance [k], top + height, TICK_LEN) ;
if (JUST_A_TICK (ticks, k))
continue ;
str_print_value (text, sizeof (text), ticks.value [k],
ticks.decimal_places_to_print) ;
cairo_text_extents (cr, text, &extents) ;
cairo_move_to (cr, left + ticks.distance [k] - extents.width / 2, top + height + 8 + extents.height) ;
cairo_show_text (cr, text) ;
} ;
/* Put ticks on Frequency axis */
tick_count = calculate_ticks (min_freq, max_freq, height, log_freq, &ticks) ;
for (k = 0 ; k < tick_count ; k++)
{ x_line (cr, left + width, top + height - ticks.distance [k], TICK_LEN) ;
if (JUST_A_TICK (ticks, k))
continue ;
str_print_value (text, sizeof (text), ticks.value [k],
ticks.decimal_places_to_print) ;
cairo_text_extents (cr, text, &extents) ;
cairo_move_to (cr, left + width + 12, top + height - ticks.distance [k] + extents.height / 4.5) ;
cairo_show_text (cr, text) ;
} ;
cairo_set_font_size (cr, 1.0 * NORMAL_FONT_SIZE) ;
/* Label X axis. */
snprintf (text, sizeof (text), "Time (secs)") ;
cairo_text_extents (cr, text, &extents) ;
cairo_move_to (cr, left + (width - extents.width) / 2, cairo_image_surface_get_height (surface) - 8) ;
cairo_show_text (cr, text) ;
/* Label Y axis (rotated). */
snprintf (text, sizeof (text), "Frequency (Hz)") ;
cairo_text_extents (cr, text, &extents) ;
cairo_get_font_matrix (cr, &matrix) ;
cairo_matrix_rotate (&matrix, -0.5 * M_PI) ;
cairo_set_font_matrix (cr, &matrix) ;
cairo_move_to (cr, cairo_image_surface_get_width (surface) - 12, top + (height + extents.width) / 2) ;
cairo_show_text (cr, text) ;
cairo_destroy (cr) ;
} /* render_spect_border */