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| author | Terje Bergstrom <tbergstrom@nvidia.com> | 2013-03-22 14:34:04 (GMT) |
|---|---|---|
| committer | Thierry Reding <thierry.reding@avionic-design.de> | 2013-04-22 10:32:46 (GMT) |
| commit | 6236451d83a720072053855fa63d51934024a707 (patch) | |
| tree | 8596f5ceee4e8b38804a74895d698a389e5cf6bf /drivers/gpu/host1x/hw/channel_hw.c | |
| parent | 6579324a41cc414009a601738b70a53d6376325c (diff) | |
| download | linux-fsl-qoriq-6236451d83a720072053855fa63d51934024a707.tar.xz | |
gpu: host1x: Add debug support
Add support for host1x debugging. Adds debugfs entries, and dumps
channel state to UART in case of stuck job.
Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de>
Tested-by: Thierry Reding <thierry.reding@avionic-design.de>
Tested-by: Erik Faye-Lund <kusmabite@gmail.com>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Diffstat (limited to 'drivers/gpu/host1x/hw/channel_hw.c')
| -rw-r--r-- | drivers/gpu/host1x/hw/channel_hw.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/gpu/host1x/hw/channel_hw.c b/drivers/gpu/host1x/hw/channel_hw.c index 5137a56..ee19962 100644 --- a/drivers/gpu/host1x/hw/channel_hw.c +++ b/drivers/gpu/host1x/hw/channel_hw.c @@ -29,6 +29,30 @@ #define HOST1X_CHANNEL_SIZE 16384 #define TRACE_MAX_LENGTH 128U +static void trace_write_gather(struct host1x_cdma *cdma, struct host1x_bo *bo, + u32 offset, u32 words) +{ + void *mem = NULL; + + if (host1x_debug_trace_cmdbuf) + mem = host1x_bo_mmap(bo); + + if (mem) { + u32 i; + /* + * Write in batches of 128 as there seems to be a limit + * of how much you can output to ftrace at once. + */ + for (i = 0; i < words; i += TRACE_MAX_LENGTH) { + trace_host1x_cdma_push_gather( + dev_name(cdma_to_channel(cdma)->dev), + (u32)bo, min(words - i, TRACE_MAX_LENGTH), + offset + i * sizeof(u32), mem); + } + host1x_bo_munmap(bo, mem); + } +} + static void submit_gathers(struct host1x_job *job) { struct host1x_cdma *cdma = &job->channel->cdma; @@ -38,6 +62,7 @@ static void submit_gathers(struct host1x_job *job) struct host1x_job_gather *g = &job->gathers[i]; u32 op1 = host1x_opcode_gather(g->words); u32 op2 = g->base + g->offset; + trace_write_gather(cdma, g->bo, g->offset, op1 & 0xffff); host1x_cdma_push(cdma, op1, op2); } } |