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overlay: Handle execlists not setting the rings as active

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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2015-08-08 21:31:08 +01:00
parent 06aed34d38
commit 74a8068086
1 changed files with 19 additions and 2 deletions
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21
overlay/gpu-top.c
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@ -116,6 +116,23 @@ static uint32_t mmio_ring_read(struct mmio_ring *ring, uint32_t reg)
return igfx_read(ring->mmio, ring->base + reg);
}
static int has_execlists(void)
{
int detected = 0;
FILE *file;
file = fopen("/sys/module/i915/parameters/enable_execlists", "r");
if (file) {
int value;
if (fscanf(file, "%d", &value) == 1)
detected = value != 0;
fclose(file);
}
return detected;
}
static void mmio_ring_init(struct mmio_ring *ring, void *mmio)
{
uint32_t ctl;
@ -123,7 +140,7 @@ static void mmio_ring_init(struct mmio_ring *ring, void *mmio)
ring->mmio = mmio;
ctl = mmio_ring_read(ring, RING_CTL);
if ((ctl & 1) == 0)
if ((ctl & 1) == 0 && !has_execlists())
ring->id = -1;
}
@ -239,10 +256,10 @@ static void mmio_init(struct gpu_top *gt)
usleep(1000);
}
memset(payload, 0, sizeof(payload));
mmio_ring_emit(&render_ring, 1000, payload);
mmio_ring_emit(&bsd_ring, 1000, payload);
mmio_ring_emit(&blt_ring, 1000, payload);
write(fd[1], payload, sizeof(payload));
}
}