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gpu: host1x: Program interrupt destinations on Tegra234

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On Tegra234, each Host1x VM has 8 interrupt lines. Each syncpoint
can be configured with which interrupt line should be used for
threshold interrupt, allowing for load balancing.

For now, to keep backwards compatibility, just set all syncpoints
to the first interrupt.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Mikko Perttunen 2022-06-27 17:20:03 +03:00 committed by Thierry Reding
parent ee8f894f3f
commit 7afd1194a3
1 changed files with 11 additions and 0 deletions
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11
drivers/gpu/host1x/hw/intr_hw.c
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@ -76,6 +76,17 @@ static void intr_hw_init(struct host1x *host, u32 cpm)
/* update host clocks per usec */
host1x_sync_writel(host, cpm, HOST1X_SYNC_USEC_CLK);
#endif
#if HOST1X_HW >= 8
u32 id;
/*
* Program threshold interrupt destination among 8 lines per VM,
* per syncpoint. For now, just direct all to the first interrupt
* line.
*/
for (id = 0; id < host->info->nb_pts; id++)
host1x_sync_writel(host, 0, HOST1X_SYNC_SYNCPT_INTR_DEST(id));
#endif
}
static int