[PATCH v3 39/41] nouveau-dbg: add 2 verbose-classmaps for CLI, SUBDEV

[Jim Cromie <jim.cromie@gmail.com>]

nouveau has additional debug variables to consider:

drivers/gpu/drm/nouveau/include/nvkm/core/device.h
131:	if (_device->debug >= (l))                                             \

drivers/gpu/drm/nouveau/include/nvkm/core/client.h
39:	if (_client->debug >= NV_DBG_##l)                                      \

drivers/gpu/drm/nouveau/include/nvkm/core/subdev.h
54:	if (CONFIG_NOUVEAU_DEBUG >= (l) && _subdev->debug >= (l))              \

This is another baby-step, that seems not to break, so lets get a
snapshot.

whats done here:

In nouveau_drm.c, declare class-names: NV_CLI_DBG_* NV_SUBDEV_DBG_* by
calling DECLARE_DYNDBG_CLASSMAP(verbose-type) 2x more, right after the
drm DECLARE, for cli and subdev.  Adjust base to 10,15, to avoid 0-10
allocated subsystem-wide for drm.debug.  This shares the 0..30
classid-space.

In nvkm/core/debug.h, add enums to match the names, with initial
values to match the bases.

In nvkm/core/subdev.h, alter (recently added) nvkm_drmdbg_() to use
NV_SUBDEV_DBG_* instead of NV_DBG_*.  Note: this is undone next,
because base != CONFIG_NOUVEAU_DEBUG.

NOTES:

class-name-space is flat and wide, so super-generic names like INFO
should be prefixed; who could predict what a generic "V1" does across
all modules.

A sub-system prefix, such as "DRM_UT_" could be considered a working
shorthand for module "foo,bar,buzz" (which wouldnt work), but it adds
a layer of authors-judgment in the classifications.

In both classmaps, Ive left FATAL..WARN out, they're not really
optional the way INFO..SPAM are; even if they were defaulted to on,
dyndbg shouldn't be able to turn them off.

bash-5.1# modprobe nouveau
[  966.107833] dyndbg:   3 debug prints in module wmi
[  966.342188] dyndbg: class[0]: module:nouveau base:15 len:5 ty:1
[  966.342873] dyndbg:  15: 0 NV_SUBDEV_DBG_OFF
[  966.343352] dyndbg:  16: 1 NV_SUBDEV_DBG_INFO
[  966.343912] dyndbg:  17: 2 NV_SUBDEV_DBG_DEBUG
[  966.344443] dyndbg:  18: 3 NV_SUBDEV_DBG_TRACE
[  966.344938] dyndbg:  19: 4 NV_SUBDEV_DBG_SPAM
[  966.345402] dyndbg: class[1]: module:nouveau base:10 len:5 ty:1
[  966.346011] dyndbg:  10: 0 NV_CLI_DBG_OFF
[  966.346477] dyndbg:  11: 1 NV_CLI_DBG_INFO
[  966.346989] dyndbg:  12: 2 NV_CLI_DBG_DEBUG
[  966.347442] dyndbg:  13: 3 NV_CLI_DBG_TRACE
[  966.347875] dyndbg:  14: 4 NV_CLI_DBG_SPAM
[  966.348284] dyndbg: class[2]: module:nouveau base:0 len:10 ty:0
[  966.348888] dyndbg:  0: 0 DRM_UT_CORE
[  966.349310] dyndbg:  1: 1 DRM_UT_DRIVER
[  966.349694] dyndbg:  2: 2 DRM_UT_KMS
[  966.350083] dyndbg:  3: 3 DRM_UT_PRIME
[  966.350482] dyndbg:  4: 4 DRM_UT_ATOMIC
[  966.351016] dyndbg:  5: 5 DRM_UT_VBL
[  966.351475] dyndbg:  6: 6 DRM_UT_STATE
[  966.351899] dyndbg:  7: 7 DRM_UT_LEASE
[  966.352309] dyndbg:  8: 8 DRM_UT_DP
[  966.352678] dyndbg:  9: 9 DRM_UT_DRMRES
[  966.353104] dyndbg: module:nouveau attached 3 classes
[  966.353759] dyndbg: 119 debug prints in module nouveau

NOTE: it was 632 with previous commit, switching NV_DEBUG to use
NV_SUBDEV_DBG_DEBUG instead of NV_DBG_DEBUG is the cause.

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
---
 .../gpu/drm/nouveau/include/nvkm/core/debug.h    | 16 ++++++++++++++++
 .../gpu/drm/nouveau/include/nvkm/core/subdev.h   |  3 ++-
 drivers/gpu/drm/nouveau/nouveau_drm.c            | 14 ++++++++++++++
 3 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/include/nvkm/core/debug.h b/drivers/gpu/drm/nouveau/include/nvkm/core/debug.h
index b4a9c7d991ca..6a155a23a3d1 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/core/debug.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/core/debug.h
@@ -9,4 +9,20 @@
 #define NV_DBG_TRACE    5
 #define NV_DBG_PARANOIA 6
 #define NV_DBG_SPAM     7
+
+enum nv_cli_dbg_verbose {
+	NV_CLI_DBG_OFF = 10,
+	NV_CLI_DBG_INFO,
+	NV_CLI_DBG_DEBUG,
+	NV_CLI_DBG_TRACE,
+	NV_CLI_DBG_SPAM
+};
+enum nv_subdev_dbg_verbose {
+	NV_SUBDEV_DBG_OFF = 15,
+	NV_SUBDEV_DBG_INFO,
+	NV_SUBDEV_DBG_DEBUG,
+	NV_SUBDEV_DBG_TRACE,
+	NV_SUBDEV_DBG_SPAM
+};
+
 #endif
diff --git a/drivers/gpu/drm/nouveau/include/nvkm/core/subdev.h b/drivers/gpu/drm/nouveau/include/nvkm/core/subdev.h
index b9c2afab321f..bf9c69f4fc3e 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/core/subdev.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/core/subdev.h
@@ -2,6 +2,7 @@
 #ifndef __NVKM_SUBDEV_H__
 #define __NVKM_SUBDEV_H__
 #include <core/device.h>
+#include <core/debug.h>
 
 enum nvkm_subdev_type {
 #define NVKM_LAYOUT_ONCE(t,s,p,...) t,
@@ -65,7 +66,7 @@ void nvkm_subdev_intr(struct nvkm_subdev *);
 	if (CONFIG_NOUVEAU_DEBUG >= (l) && _subdev->debug >= (l))	\
 		dev_dbg(_subdev->device->dev, "%s: "f, _subdev->name, ##a); \
 } while(0)
-#define nvkm_drmdbg_(s,l,f,a...) nvkm_drmdbg__((s), NV_DBG_##l, dbg, f, ##a)
+#define nvkm_drmdbg_(s,l,f,a...) nvkm_drmdbg__((s), NV_SUBDEV_DBG_##l, dbg, f, ##a)
 #define nvkm_debug(s,f,a...) nvkm_drmdbg_((s), DEBUG, f, ##a)
 #define nvkm_trace(s,f,a...) nvkm_drmdbg_((s), TRACE, f, ##a)
 #define nvkm_spam(s,f,a...)  nvkm_drmdbg_((s),  SPAM, f, ##a)
diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c
index 76e3a8d50b01..85b63b527877 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
@@ -83,6 +83,20 @@ DECLARE_DYNDBG_CLASSMAP(drm_debug_classes, DD_CLASS_TYPE_DISJOINT, 0,
 			"DRM_UT_DP",
 			"DRM_UT_DRMRES");
 
+DECLARE_DYNDBG_CLASSMAP(nv_cli_debug_verbose, DD_CLASS_TYPE_VERBOSE, 10,
+			"NV_CLI_DBG_OFF",
+			"NV_CLI_DBG_INFO",
+			"NV_CLI_DBG_DEBUG",
+			"NV_CLI_DBG_TRACE",
+			"NV_CLI_DBG_SPAM");
+
+DECLARE_DYNDBG_CLASSMAP(nv_subdev_debug_verbose, DD_CLASS_TYPE_VERBOSE, 15,
+			"NV_SUBDEV_DBG_OFF",
+			"NV_SUBDEV_DBG_INFO",
+			"NV_SUBDEV_DBG_DEBUG",
+			"NV_SUBDEV_DBG_TRACE",
+			"NV_SUBDEV_DBG_SPAM");
+
 MODULE_PARM_DESC(config, "option string to pass to driver core");
 static char *nouveau_config;
 module_param_named(config, nouveau_config, charp, 0400);
-- 
2.36.1