diff options
| author | Mikko Perttunen <mperttunen@nvidia.com> | 2017-09-28 15:50:40 +0300 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2017-10-20 14:19:52 +0200 |
| commit | 2316f29fb57932e34a56998073246b8ec4c567f9 (patch) | |
| tree | aaa1f260843c97d0ee59ceca94acb3cb5bb0ffff /drivers/gpu/host1x/hw/channel_hw.c | |
| parent | c3f52220f276504dea5615cc78750ddc9f468389 (diff) | |
gpu: host1x: Enable gather filter
The gather filter is a feature present on Tegra124 and newer where the
hardware prevents GATHERed command buffers from executing commands
normally reserved for the CDMA pushbuffer which is maintained by the
kernel driver.
This commit enables the gather filter on all supporting hardware.
Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu/host1x/hw/channel_hw.c')
| -rw-r--r-- | drivers/gpu/host1x/hw/channel_hw.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/gpu/host1x/hw/channel_hw.c b/drivers/gpu/host1x/hw/channel_hw.c index 1d3e9bdde2ce..9af758785a11 100644 --- a/drivers/gpu/host1x/hw/channel_hw.c +++ b/drivers/gpu/host1x/hw/channel_hw.c @@ -180,10 +180,32 @@ error: return err; } +static void enable_gather_filter(struct host1x *host, + struct host1x_channel *ch) +{ +#if HOST1X_HW >= 6 + u32 val; + + if (!host->hv_regs) + return; + + val = host1x_hypervisor_readl( + host, HOST1X_HV_CH_KERNEL_FILTER_GBUFFER(ch->id / 32)); + val |= BIT(ch->id % 32); + host1x_hypervisor_writel( + host, val, HOST1X_HV_CH_KERNEL_FILTER_GBUFFER(ch->id / 32)); +#elif HOST1X_HW >= 4 + host1x_ch_writel(ch, + HOST1X_CHANNEL_CHANNELCTRL_KERNEL_FILTER_GBUFFER(1), + HOST1X_CHANNEL_CHANNELCTRL); +#endif +} + static int host1x_channel_init(struct host1x_channel *ch, struct host1x *dev, unsigned int index) { ch->regs = dev->regs + index * HOST1X_CHANNEL_SIZE; + enable_gather_filter(dev, ch); return 0; } |