diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-4.19/950-0487-drm-v3d-Add-a-little-debugfs-entry-for-measuring-the.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-4.19/950-0487-drm-v3d-Add-a-little-debugfs-entry-for-measuring-the.patch | 106 |
1 files changed, 0 insertions, 106 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0487-drm-v3d-Add-a-little-debugfs-entry-for-measuring-the.patch b/target/linux/bcm27xx/patches-4.19/950-0487-drm-v3d-Add-a-little-debugfs-entry-for-measuring-the.patch deleted file mode 100644 index 847bb2089b..0000000000 --- a/target/linux/bcm27xx/patches-4.19/950-0487-drm-v3d-Add-a-little-debugfs-entry-for-measuring-the.patch +++ /dev/null @@ -1,106 +0,0 @@ -From 18f93916e42ea25fc77cab20d1e038620e33d741 Mon Sep 17 00:00:00 2001 -From: Eric Anholt <eric@anholt.net> -Date: Fri, 28 Sep 2018 16:21:24 -0700 -Subject: [PATCH] drm/v3d: Add a little debugfs entry for measuring the - core clock. - -This adds just enough performance counter support to measure the -clock. We don't have linux kernel drivers for the clock driving the -HW, and this was useful for determining that the V3D HW is running on -a slow clock, not that the driver was slow. - -Signed-off-by: Eric Anholt <eric@anholt.net> -Link: https://patchwork.freedesktop.org/patch/msgid/20180928232126.4332-2-eric@anholt.net -Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com> -(cherry picked from commit 6915c9a525e575732429c22b28eb11871a29374b) ---- - drivers/gpu/drm/v3d/v3d_debugfs.c | 35 +++++++++++++++++++++++++++++++ - drivers/gpu/drm/v3d/v3d_regs.h | 30 ++++++++++++++++++++++++++ - 2 files changed, 65 insertions(+) - ---- a/drivers/gpu/drm/v3d/v3d_debugfs.c -+++ b/drivers/gpu/drm/v3d/v3d_debugfs.c -@@ -179,9 +179,44 @@ static int v3d_debugfs_bo_stats(struct s - return 0; - } - -+static int v3d_measure_clock(struct seq_file *m, void *unused) -+{ -+ struct drm_info_node *node = (struct drm_info_node *)m->private; -+ struct drm_device *dev = node->minor->dev; -+ struct v3d_dev *v3d = to_v3d_dev(dev); -+ uint32_t cycles; -+ int core = 0; -+ int measure_ms = 1000; -+ -+ if (v3d->ver >= 40) { -+ V3D_CORE_WRITE(core, V3D_V4_PCTR_0_SRC_0_3, -+ V3D_SET_FIELD(V3D_PCTR_CYCLE_COUNT, -+ V3D_PCTR_S0)); -+ V3D_CORE_WRITE(core, V3D_V4_PCTR_0_CLR, 1); -+ V3D_CORE_WRITE(core, V3D_V4_PCTR_0_EN, 1); -+ } else { -+ V3D_CORE_WRITE(core, V3D_V3_PCTR_0_PCTRS0, -+ V3D_PCTR_CYCLE_COUNT); -+ V3D_CORE_WRITE(core, V3D_V3_PCTR_0_CLR, 1); -+ V3D_CORE_WRITE(core, V3D_V3_PCTR_0_EN, -+ V3D_V3_PCTR_0_EN_ENABLE | -+ 1); -+ } -+ msleep(measure_ms); -+ cycles = V3D_CORE_READ(core, V3D_PCTR_0_PCTR0); -+ -+ seq_printf(m, "cycles: %d (%d.%d Mhz)\n", -+ cycles, -+ cycles / (measure_ms * 1000), -+ (cycles / (measure_ms * 100)) % 10); -+ -+ return 0; -+} -+ - static const struct drm_info_list v3d_debugfs_list[] = { - {"v3d_ident", v3d_v3d_debugfs_ident, 0}, - {"v3d_regs", v3d_v3d_debugfs_regs, 0}, -+ {"measure_clock", v3d_measure_clock, 0}, - {"bo_stats", v3d_debugfs_bo_stats, 0}, - }; - ---- a/drivers/gpu/drm/v3d/v3d_regs.h -+++ b/drivers/gpu/drm/v3d/v3d_regs.h -@@ -267,6 +267,36 @@ - # define V3D_PTB_BXCF_RWORDERDISA BIT(1) - # define V3D_PTB_BXCF_CLIPDISA BIT(0) - -+#define V3D_V3_PCTR_0_EN 0x00674 -+#define V3D_V3_PCTR_0_EN_ENABLE BIT(31) -+#define V3D_V4_PCTR_0_EN 0x00650 -+/* When a bit is set, resets the counter to 0. */ -+#define V3D_V3_PCTR_0_CLR 0x00670 -+#define V3D_V4_PCTR_0_CLR 0x00654 -+#define V3D_PCTR_0_OVERFLOW 0x00658 -+ -+#define V3D_V3_PCTR_0_PCTRS0 0x00684 -+#define V3D_V3_PCTR_0_PCTRS15 0x00660 -+#define V3D_V3_PCTR_0_PCTRSX(x) (V3D_V3_PCTR_0_PCTRS0 + \ -+ 4 * (x)) -+/* Each src reg muxes four counters each. */ -+#define V3D_V4_PCTR_0_SRC_0_3 0x00660 -+#define V3D_V4_PCTR_0_SRC_28_31 0x0067c -+# define V3D_PCTR_S0_MASK V3D_MASK(6, 0) -+# define V3D_PCTR_S0_SHIFT 0 -+# define V3D_PCTR_S1_MASK V3D_MASK(14, 8) -+# define V3D_PCTR_S1_SHIFT 8 -+# define V3D_PCTR_S2_MASK V3D_MASK(22, 16) -+# define V3D_PCTR_S2_SHIFT 16 -+# define V3D_PCTR_S3_MASK V3D_MASK(30, 24) -+# define V3D_PCTR_S3_SHIFT 24 -+# define V3D_PCTR_CYCLE_COUNT 32 -+ -+/* Output values of the counters. */ -+#define V3D_PCTR_0_PCTR0 0x00680 -+#define V3D_PCTR_0_PCTR31 0x006fc -+#define V3D_PCTR_0_PCTRX(x) (V3D_PCTR_0_PCTR0 + \ -+ 4 * (x)) - #define V3D_GMP_STATUS 0x00800 - # define V3D_GMP_STATUS_GMPRST BIT(31) - # define V3D_GMP_STATUS_WR_COUNT_MASK V3D_MASK(30, 24) |