diff mbox

[RFC] drm/i915: Extend PARAMS_FOR_EACH macro with more data

Message ID 20170526154429.87820-1-michal.wajdeczko@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Michal Wajdeczko May 26, 2017, 3:44 p.m. UTC
Currently our PARAMS_FOR_EACH macro contains only param type and name.
We use this macro to define struct members, but later on we initialize
this struct using handcrafted code, which leads in some cases to use
mismatched value vs. type. Let's extend our root macro with param
default value to keep them in sync. Also drop ; from the macro to allow
more flexible usages.

Later on we can also add there permission, unsafe tag and description.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_debugfs.c   |  2 +-
 drivers/gpu/drm/i915/i915_gpu_error.c |  6 +--
 drivers/gpu/drm/i915/i915_params.c    | 42 ++----------------
 drivers/gpu/drm/i915/i915_params.h    | 82 +++++++++++++++++------------------
 4 files changed, 48 insertions(+), 84 deletions(-)

Comments

Chris Wilson May 26, 2017, 3:56 p.m. UTC | #1
On Fri, May 26, 2017 at 03:44:29PM +0000, Michal Wajdeczko wrote:
> Currently our PARAMS_FOR_EACH macro contains only param type and name.
> We use this macro to define struct members, but later on we initialize
> this struct using handcrafted code, which leads in some cases to use
> mismatched value vs. type. Let's extend our root macro with param
> default value to keep them in sync. Also drop ; from the macro to allow
> more flexible usages.

Completely overlooked the initialization, so that looks to be a good
improvement. You can also add the default value to the printers, and if
possible highlight values that have been changed by the user -- we could
include the unsafe notifier in that as well.
-Chris
diff mbox

Patch

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 7e0816c..845b740 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -66,7 +66,7 @@  static int i915_capabilities(struct seq_file *m, void *data)
 #undef PRINT_FLAG
 
 	kernel_param_lock(THIS_MODULE);
-#define PRINT_PARAM(T, x) seq_print_param(m, #x, #T, &i915.x);
+#define PRINT_PARAM(T, x, v) seq_print_param(m, #x, #T, &i915.x);
 	I915_PARAMS_FOR_EACH(PRINT_PARAM);
 #undef PRINT_PARAM
 	kernel_param_unlock(THIS_MODULE);
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index e18f350..4f181b4 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -566,7 +566,7 @@  static __always_inline void err_print_param(struct drm_i915_error_state_buf *m,
 static void err_print_params(struct drm_i915_error_state_buf *m,
 			     const struct i915_params *p)
 {
-#define PRINT(T, x) err_print_param(m, #x, #T, &p->x);
+#define PRINT(T, x, v) err_print_param(m, #x, #T, &p->x);
 	I915_PARAMS_FOR_EACH(PRINT);
 #undef PRINT
 }
@@ -860,7 +860,7 @@  void __i915_gpu_state_free(struct kref *error_ref)
 	kfree(error->overlay);
 	kfree(error->display);
 
-#define FREE(T, x) free_param(#T, &error->params.x);
+#define FREE(T, x, v) free_param(#T, &error->params.x);
 	I915_PARAMS_FOR_EACH(FREE);
 #undef FREE
 
@@ -1694,7 +1694,7 @@  static int capture(void *data)
 					   error->i915->gt.last_init_time));
 
 	error->params = i915;
-#define DUP(T, x) dup_param(#T, &error->params.x);
+#define DUP(T, x, v) dup_param(#T, &error->params.x);
 	I915_PARAMS_FOR_EACH(DUP);
 #undef DUP
 
diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c
index b6a7e36..e74c7bd 100644
--- a/drivers/gpu/drm/i915/i915_params.c
+++ b/drivers/gpu/drm/i915/i915_params.c
@@ -25,47 +25,11 @@ 
 #include "i915_params.h"
 #include "i915_drv.h"
 
+#define MEMBER(T, member, value) .member = value,
 struct i915_params i915 __read_mostly = {
-	.modeset = -1,
-	.panel_ignore_lid = 1,
-	.semaphores = -1,
-	.lvds_channel_mode = 0,
-	.panel_use_ssc = -1,
-	.vbt_sdvo_panel_type = -1,
-	.enable_rc6 = -1,
-	.enable_dc = -1,
-	.enable_fbc = -1,
-	.enable_execlists = -1,
-	.enable_hangcheck = true,
-	.enable_ppgtt = -1,
-	.enable_psr = -1,
-	.alpha_support = IS_ENABLED(CONFIG_DRM_I915_ALPHA_SUPPORT),
-	.disable_power_well = -1,
-	.enable_ips = 1,
-	.fastboot = 0,
-	.prefault_disable = 0,
-	.load_detect_test = 0,
-	.force_reset_modeset_test = 0,
-	.reset = true,
-	.error_capture = true,
-	.invert_brightness = 0,
-	.disable_display = 0,
-	.enable_cmd_parser = true,
-	.use_mmio_flip = 0,
-	.mmio_debug = 0,
-	.verbose_state_checks = 1,
-	.nuclear_pageflip = 0,
-	.edp_vswing = 0,
-	.enable_guc_loading = 0,
-	.enable_guc_submission = 0,
-	.guc_log_level = -1,
-	.guc_firmware_path = NULL,
-	.huc_firmware_path = NULL,
-	.enable_dp_mst = true,
-	.inject_load_failure = 0,
-	.enable_dpcd_backlight = false,
-	.enable_gvt = false,
+	I915_PARAMS_FOR_EACH(MEMBER)
 };
+#undef MEMBER
 
 module_param_named(modeset, i915.modeset, int, 0400);
 MODULE_PARM_DESC(modeset,
diff --git a/drivers/gpu/drm/i915/i915_params.h b/drivers/gpu/drm/i915/i915_params.h
index 34148cc..ca72a8c 100644
--- a/drivers/gpu/drm/i915/i915_params.h
+++ b/drivers/gpu/drm/i915/i915_params.h
@@ -28,50 +28,50 @@ 
 #include <linux/cache.h> /* for __read_mostly */
 
 #define I915_PARAMS_FOR_EACH(func) \
-	func(int, modeset); \
-	func(int, panel_ignore_lid); \
-	func(int, semaphores); \
-	func(int, lvds_channel_mode); \
-	func(int, panel_use_ssc); \
-	func(int, vbt_sdvo_panel_type); \
-	func(int, enable_rc6); \
-	func(int, enable_dc); \
-	func(int, enable_fbc); \
-	func(int, enable_ppgtt); \
-	func(int, enable_execlists); \
-	func(int, enable_psr); \
-	func(int, disable_power_well); \
-	func(int, enable_ips); \
-	func(int, invert_brightness); \
-	func(int, enable_guc_loading); \
-	func(int, enable_guc_submission); \
-	func(int, guc_log_level); \
-	func(char *, guc_firmware_path); \
-	func(char *, huc_firmware_path); \
-	func(int, use_mmio_flip); \
-	func(int, mmio_debug); \
-	func(int, edp_vswing); \
-	func(unsigned int, inject_load_failure); \
+	func(int, modeset, -1) \
+	func(int, panel_ignore_lid, 1) \
+	func(int, semaphores, -1) \
+	func(int, lvds_channel_mode, 0) \
+	func(int, panel_use_ssc, -1) \
+	func(int, vbt_sdvo_panel_type, -1) \
+	func(int, enable_rc6, -1) \
+	func(int, enable_dc, -1) \
+	func(int, enable_fbc, -1) \
+	func(int, enable_ppgtt, -1) \
+	func(int, enable_execlists, -1) \
+	func(int, enable_psr, -1) \
+	func(int, disable_power_well, -1) \
+	func(int, enable_ips, 1) \
+	func(int, invert_brightness, 0) \
+	func(int, enable_guc_loading, 0) \
+	func(int, enable_guc_submission, 0) \
+	func(int, guc_log_level, -1) \
+	func(char *, guc_firmware_path, NULL) \
+	func(char *, huc_firmware_path, NULL) \
+	func(int, use_mmio_flip, 0) \
+	func(int, mmio_debug, 0) \
+	func(int, edp_vswing, 0) \
+	func(unsigned int, inject_load_failure, 0) \
 	/* leave bools at the end to not create holes */ \
-	func(bool, alpha_support); \
-	func(bool, enable_cmd_parser); \
-	func(bool, enable_hangcheck); \
-	func(bool, fastboot); \
-	func(bool, prefault_disable); \
-	func(bool, load_detect_test); \
-	func(bool, force_reset_modeset_test); \
-	func(bool, reset); \
-	func(bool, error_capture); \
-	func(bool, disable_display); \
-	func(bool, verbose_state_checks); \
-	func(bool, nuclear_pageflip); \
-	func(bool, enable_dp_mst); \
-	func(bool, enable_dpcd_backlight); \
-	func(bool, enable_gvt)
+	func(bool, alpha_support, IS_ENABLED(CONFIG_DRM_I915_ALPHA_SUPPORT)) \
+	func(bool, enable_cmd_parser, true) \
+	func(bool, enable_hangcheck, true) \
+	func(bool, fastboot, false) \
+	func(bool, prefault_disable, false) \
+	func(bool, load_detect_test, false) \
+	func(bool, force_reset_modeset_test, false) \
+	func(bool, reset, true) \
+	func(bool, error_capture, true) \
+	func(bool, disable_display, false) \
+	func(bool, verbose_state_checks, true) \
+	func(bool, nuclear_pageflip, false) \
+	func(bool, enable_dp_mst, true) \
+	func(bool, enable_dpcd_backlight, false) \
+	func(bool, enable_gvt, false)
 
-#define MEMBER(T, member) T member
+#define MEMBER(T, member, value) T member;
 struct i915_params {
-	I915_PARAMS_FOR_EACH(MEMBER);
+	I915_PARAMS_FOR_EACH(MEMBER)
 };
 #undef MEMBER