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drm/vc4: Expose performance counters to userspace

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The V3D engine has various hardware counters which might be interesting
to userspace performance analysis tools.

Expose new ioctls to create/destroy a performance monitor object and
query the counter values of this perfmance monitor.

Note that a perfomance monitor is given an ID that is only valid on the
file descriptor it has been allocated from. A performance monitor can be
attached to a CL submission and the driver will enable HW counters for
this request and update the performance monitor values at the end of the
job.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20180112090926.12538-1-boris.brezillon@free-electrons.com
This commit is contained in:
Boris Brezillon
2018-01-12 10:09:26 +01:00
committed by Eric Anholt
parent 9c950e468c
commit 65101d8c91
9 changed files with 474 additions and 72 deletions
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35
drivers/gpu/drm/vc4/vc4_regs.h
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@@ -122,38 +122,9 @@
#define V3D_VPMBASE 0x00504
#define V3D_PCTRC 0x00670
#define V3D_PCTRE 0x00674
#define V3D_PCTR0 0x00680
#define V3D_PCTRS0 0x00684
#define V3D_PCTR1 0x00688
#define V3D_PCTRS1 0x0068c
#define V3D_PCTR2 0x00690
#define V3D_PCTRS2 0x00694
#define V3D_PCTR3 0x00698
#define V3D_PCTRS3 0x0069c
#define V3D_PCTR4 0x006a0
#define V3D_PCTRS4 0x006a4
#define V3D_PCTR5 0x006a8
#define V3D_PCTRS5 0x006ac
#define V3D_PCTR6 0x006b0
#define V3D_PCTRS6 0x006b4
#define V3D_PCTR7 0x006b8
#define V3D_PCTRS7 0x006bc
#define V3D_PCTR8 0x006c0
#define V3D_PCTRS8 0x006c4
#define V3D_PCTR9 0x006c8
#define V3D_PCTRS9 0x006cc
#define V3D_PCTR10 0x006d0
#define V3D_PCTRS10 0x006d4
#define V3D_PCTR11 0x006d8
#define V3D_PCTRS11 0x006dc
#define V3D_PCTR12 0x006e0
#define V3D_PCTRS12 0x006e4
#define V3D_PCTR13 0x006e8
#define V3D_PCTRS13 0x006ec
#define V3D_PCTR14 0x006f0
#define V3D_PCTRS14 0x006f4
#define V3D_PCTR15 0x006f8
#define V3D_PCTRS15 0x006fc
# define V3D_PCTRE_EN BIT(31)
#define V3D_PCTR(x) (0x00680 + ((x) * 8))
#define V3D_PCTRS(x) (0x00684 + ((x) * 8))
#define V3D_DBGE 0x00f00
#define V3D_FDBGO 0x00f04
#define V3D_FDBGB 0x00f08