diff options
| author | Dmitry Osipenko <digetx@gmail.com> | 2017-06-15 02:18:39 +0300 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2017-06-15 15:24:41 +0300 |
| commit | a47ac10e6e628740dd122d650afd193941f4770b (patch) | |
| tree | a090e4af268d86cc974d02380af455bde7c916c4 /drivers/gpu/host1x | |
| parent | a2b78b0d53f0808ebc2a0368b589a5cb6b672294 (diff) | |
| download | linux-a47ac10e6e628740dd122d650afd193941f4770b.tar.xz | |
gpu: host1x: Check waits in the firewall
Check waits in the firewall in a way it is done for relocations.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Reviewed-by: Erik Faye-Lund <kusmabite@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu/host1x')
| -rw-r--r-- | drivers/gpu/host1x/job.c | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/drivers/gpu/host1x/job.c b/drivers/gpu/host1x/job.c index ef746f7afb88..f32ae69a68c7 100644 --- a/drivers/gpu/host1x/job.c +++ b/drivers/gpu/host1x/job.c @@ -31,6 +31,8 @@ #include "job.h" #include "syncpt.h" +#define HOST1X_WAIT_SYNCPT_OFFSET 0x8 + struct host1x_job *host1x_job_alloc(struct host1x_channel *ch, u32 num_cmdbufs, u32 num_relocs, u32 num_waitchks) @@ -337,6 +339,17 @@ static bool check_reloc(struct host1x_reloc *reloc, struct host1x_bo *cmdbuf, return true; } +static bool check_wait(struct host1x_waitchk *wait, struct host1x_bo *cmdbuf, + unsigned int offset) +{ + offset *= sizeof(u32); + + if (wait->bo != cmdbuf || wait->offset != offset) + return false; + + return true; +} + struct host1x_firewall { struct host1x_job *job; struct device *dev; @@ -344,6 +357,9 @@ struct host1x_firewall { unsigned int num_relocs; struct host1x_reloc *reloc; + unsigned int num_waitchks; + struct host1x_waitchk *waitchk; + struct host1x_bo *cmdbuf; unsigned int offset; @@ -370,6 +386,20 @@ static int check_register(struct host1x_firewall *fw, unsigned long offset) fw->reloc++; } + if (offset == HOST1X_WAIT_SYNCPT_OFFSET) { + if (fw->class != HOST1X_CLASS_HOST1X) + return -EINVAL; + + if (!fw->num_waitchks) + return -EINVAL; + + if (!check_wait(fw->waitchk, fw->cmdbuf, fw->offset)) + return -EINVAL; + + fw->num_waitchks--; + fw->waitchk++; + } + return 0; } @@ -534,6 +564,8 @@ static inline int copy_gathers(struct host1x_job *job, struct device *dev) fw.dev = dev; fw.reloc = job->relocarray; fw.num_relocs = job->num_relocs; + fw.waitchk = job->waitchk; + fw.num_waitchks = job->num_waitchk; fw.class = job->class; for (i = 0; i < job->num_gathers; i++) { @@ -572,8 +604,8 @@ static inline int copy_gathers(struct host1x_job *job, struct device *dev) offset += g->words * sizeof(u32); } - /* No relocs should remain at this point */ - if (fw.num_relocs) + /* No relocs and waitchks should remain at this point */ + if (fw.num_relocs || fw.num_waitchks) return -EINVAL; return 0; |