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authorMark Cave-Ayland <mark.cave-ayland@ilande.co.uk>2018-02-09 18:51:36 +0000
committerDavid Gibson <david@gibson.dropbear.id.au>2018-02-11 10:11:08 +1100
commit42a0938f92a842ed20b2ed4ce65231fca9b66f41 (patch)
treec6a0b7cd447e0aa3d0b7b5fc5194efe9c5b0826a /hw/misc
parent27c5cee1c390b6d6ed852dd10d0822cbb91a847e (diff)
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cuda: minor cosmetic tidy-ups to get_next_irq_time()
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'hw/misc')
-rw-r--r--hw/misc/macio/cuda.c23
1 files changed, 12 insertions, 11 deletions
diff --git a/hw/misc/macio/cuda.c b/hw/misc/macio/cuda.c
index d4a52fb..7299052 100644
--- a/hw/misc/macio/cuda.c
+++ b/hw/misc/macio/cuda.c
@@ -184,36 +184,37 @@ static void set_counter(CUDAState *s, CUDATimer *ti, unsigned int val)
cuda_timer_update(s, ti, ti->load_time);
}
-static int64_t get_next_irq_time(CUDATimer *s, int64_t current_time)
+static int64_t get_next_irq_time(CUDATimer *ti, int64_t current_time)
{
int64_t d, next_time;
unsigned int counter;
/* current counter value */
- d = muldiv64(current_time - s->load_time,
+ d = muldiv64(current_time - ti->load_time,
CUDA_TIMER_FREQ, NANOSECONDS_PER_SECOND);
/* the timer goes down from latch to -1 (period of latch + 2) */
- if (d <= (s->counter_value + 1)) {
- counter = (s->counter_value - d) & 0xffff;
+ if (d <= (ti->counter_value + 1)) {
+ counter = (ti->counter_value - d) & 0xffff;
} else {
- counter = (d - (s->counter_value + 1)) % (s->latch + 2);
- counter = (s->latch - counter) & 0xffff;
+ counter = (d - (ti->counter_value + 1)) % (ti->latch + 2);
+ counter = (ti->latch - counter) & 0xffff;
}
/* Note: we consider the irq is raised on 0 */
if (counter == 0xffff) {
- next_time = d + s->latch + 1;
+ next_time = d + ti->latch + 1;
} else if (counter == 0) {
- next_time = d + s->latch + 2;
+ next_time = d + ti->latch + 2;
} else {
next_time = d + counter;
}
CUDA_DPRINTF("latch=%d counter=%" PRId64 " delta_next=%" PRId64 "\n",
- s->latch, d, next_time - d);
+ ti->latch, d, next_time - d);
next_time = muldiv64(next_time, NANOSECONDS_PER_SECOND, CUDA_TIMER_FREQ) +
- s->load_time;
- if (next_time <= current_time)
+ ti->load_time;
+ if (next_time <= current_time) {
next_time = current_time + 1;
+ }
return next_time;
}