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[Qemu-ppc] [PULL 10/14] cuda.c: refactor get_tb() so that the time can b
From: |
David Gibson |
Subject: |
[Qemu-ppc] [PULL 10/14] cuda.c: refactor get_tb() so that the time can be passed in |
Date: |
Thu, 12 Nov 2015 15:38:39 +1100 |
From: Mark Cave-Ayland <address@hidden>
This is in preparation for sharing the code between timers.
Signed-off-by: Mark Cave-Ayland <address@hidden>
Reviewed-by: David Gibson <address@hidden>
Signed-off-by: David Gibson <address@hidden>
---
hw/misc/macio/cuda.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/hw/misc/macio/cuda.c b/hw/misc/macio/cuda.c
index c0a3a68..e61a3c5 100644
--- a/hw/misc/macio/cuda.c
+++ b/hw/misc/macio/cuda.c
@@ -143,10 +143,9 @@ static void cuda_update_irq(CUDAState *s)
}
}
-static uint64_t get_tb(uint64_t freq)
+static uint64_t get_tb(uint64_t time, uint64_t freq)
{
- return muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
- freq, get_ticks_per_sec());
+ return muldiv64(time, freq, get_ticks_per_sec());
}
static unsigned int get_counter(CUDATimer *s)
@@ -154,9 +153,10 @@ static unsigned int get_counter(CUDATimer *s)
int64_t d;
unsigned int counter;
uint64_t tb_diff;
+ uint64_t current_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
/* Reverse of the tb calculation algorithm that Mac OS X uses on bootup. */
- tb_diff = get_tb(s->frequency) - s->load_time;
+ tb_diff = get_tb(current_time, s->frequency) - s->load_time;
d = (tb_diff * 0xBF401675E5DULL) / (s->frequency << 24);
if (s->index == 0) {
@@ -176,7 +176,8 @@ static unsigned int get_counter(CUDATimer *s)
static void set_counter(CUDAState *s, CUDATimer *ti, unsigned int val)
{
CUDA_DPRINTF("T%d.counter=%d\n", 1 + (ti->timer == NULL), val);
- ti->load_time = get_tb(s->frequency);
+ ti->load_time = get_tb(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
+ s->frequency);
ti->counter_value = val;
cuda_timer_update(s, ti, ti->load_time);
}
--
2.5.0
- [Qemu-ppc] [PULL 07/14] cuda.c: implement dummy IIC access commands, (continued)
- [Qemu-ppc] [PULL 07/14] cuda.c: implement dummy IIC access commands, David Gibson, 2015/11/11
- [Qemu-ppc] [PULL 04/14] cuda.c: fix CUDA ADB error packet format, David Gibson, 2015/11/11
- [Qemu-ppc] [PULL 08/14] cuda.c: fix CUDA SR interrupt clearing, David Gibson, 2015/11/11
- [Qemu-ppc] [PULL 05/14] cuda.c: fix CUDA_PACKET response packet format, David Gibson, 2015/11/11
- [Qemu-ppc] [PULL 03/14] PPC: mac99: Always add USB controller, David Gibson, 2015/11/11
- [Qemu-ppc] [PULL 06/14] cuda.c: implement simple CUDA_GET_6805_ADDR command, David Gibson, 2015/11/11
- [Qemu-ppc] [PULL 09/14] cuda.c: add defines for CUDA registers, David Gibson, 2015/11/11
- [Qemu-ppc] [PULL 12/14] cuda.c: fix T2 timer and enable its interrupt, David Gibson, 2015/11/11
- [Qemu-ppc] [PULL 13/14] cuda.c: add delay to setting of SR_INT bit, David Gibson, 2015/11/11
- [Qemu-ppc] [PULL 11/14] cuda.c: rename get_counter() state variable from s to ti for consistency, David Gibson, 2015/11/11
- [Qemu-ppc] [PULL 10/14] cuda.c: refactor get_tb() so that the time can be passed in,
David Gibson <=
- [Qemu-ppc] [PULL 14/14] monitor/target-ppc: Define target_get_monitor_def, David Gibson, 2015/11/11