diff options
| author | Mikko Perttunen <mperttunen@nvidia.com> | 2016-12-14 12:16:14 +0100 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2017-04-05 18:11:43 +0200 |
| commit | 404bfb78daf3bedafb0bfab24947059575cbea3d (patch) | |
| tree | 59b8ed6b140ce74ffeb94e1488ee7818f3b02c18 /drivers/gpu/host1x/hw | |
| parent | gpu: host1x: Fix potential out-of-bounds access (diff) | |
| download | linux-404bfb78daf3bedafb0bfab24947059575cbea3d.tar.xz linux-404bfb78daf3bedafb0bfab24947059575cbea3d.zip | |
gpu: host1x: Add IOMMU support
Add support for the Host1x unit to be located behind
an IOMMU. This is required when gather buffers may be
allocated non-contiguously in physical memory, as can
be the case when TegraDRM is also using the IOMMU.
Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu/host1x/hw')
| -rw-r--r-- | drivers/gpu/host1x/hw/cdma_hw.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/drivers/gpu/host1x/hw/cdma_hw.c b/drivers/gpu/host1x/hw/cdma_hw.c index 659c1bbfeeba..6b231119193e 100644 --- a/drivers/gpu/host1x/hw/cdma_hw.c +++ b/drivers/gpu/host1x/hw/cdma_hw.c @@ -30,7 +30,7 @@ */ static void push_buffer_init(struct push_buffer *pb) { - *(u32 *)(pb->mapped + pb->size_bytes) = host1x_opcode_restart(0); + *(u32 *)(pb->mapped + pb->size) = host1x_opcode_restart(0); } /* @@ -55,8 +55,8 @@ static void cdma_timeout_cpu_incr(struct host1x_cdma *cdma, u32 getptr, *(p++) = HOST1X_OPCODE_NOP; *(p++) = HOST1X_OPCODE_NOP; dev_dbg(host1x->dev, "%s: NOP at %pad+%#x\n", __func__, - &pb->phys, getptr); - getptr = (getptr + 8) & (pb->size_bytes - 1); + &pb->dma, getptr); + getptr = (getptr + 8) & (pb->size - 1); } wmb(); @@ -78,10 +78,9 @@ static void cdma_start(struct host1x_cdma *cdma) HOST1X_CHANNEL_DMACTRL); /* set base, put and end pointer */ - host1x_ch_writel(ch, cdma->push_buffer.phys, HOST1X_CHANNEL_DMASTART); + host1x_ch_writel(ch, cdma->push_buffer.dma, HOST1X_CHANNEL_DMASTART); host1x_ch_writel(ch, cdma->push_buffer.pos, HOST1X_CHANNEL_DMAPUT); - host1x_ch_writel(ch, cdma->push_buffer.phys + - cdma->push_buffer.size_bytes + 4, + host1x_ch_writel(ch, cdma->push_buffer.dma + cdma->push_buffer.size + 4, HOST1X_CHANNEL_DMAEND); /* reset GET */ @@ -115,9 +114,8 @@ static void cdma_timeout_restart(struct host1x_cdma *cdma, u32 getptr) HOST1X_CHANNEL_DMACTRL); /* set base, end pointer (all of memory) */ - host1x_ch_writel(ch, cdma->push_buffer.phys, HOST1X_CHANNEL_DMASTART); - host1x_ch_writel(ch, cdma->push_buffer.phys + - cdma->push_buffer.size_bytes, + host1x_ch_writel(ch, cdma->push_buffer.dma, HOST1X_CHANNEL_DMASTART); + host1x_ch_writel(ch, cdma->push_buffer.dma + cdma->push_buffer.size, HOST1X_CHANNEL_DMAEND); /* set GET, by loading the value in PUT (then reset GET) */ |