details: https://anonhg.NetBSD.org/src/rev/08d05afb349a
branches: trunk
changeset: 328958:08d05afb349a
user: riastradh <riastradh%NetBSD.org@localhost>
date: Fri Apr 25 18:38:54 2014 +0000
description:
Adapt Linux i915 wait_for to use DELAY so it works while cold.
Adapted from a patch by nonaka@ in PR 48706.
diffstat:
sys/external/bsd/drm2/dist/drm/i915/intel_drv.h | 54 +++++++++++++++++++++++++
1 files changed, 54 insertions(+), 0 deletions(-)
diffs (71 lines):
diff -r f53bc912c77a -r 08d05afb349a sys/external/bsd/drm2/dist/drm/i915/intel_drv.h
--- a/sys/external/bsd/drm2/dist/drm/i915/intel_drv.h Fri Apr 25 18:37:38 2014 +0000
+++ b/sys/external/bsd/drm2/dist/drm/i915/intel_drv.h Fri Apr 25 18:38:54 2014 +0000
@@ -34,6 +34,59 @@
#include <drm/drm_fb_helper.h>
#include <drm/drm_dp_helper.h>
+#ifdef __NetBSD__
+#define _wait_for(COND, MS, W) ({ \
+ int ret__ = 0; \
+ if (cold) { \
+ int ms = (MS); \
+ while (!(COND)) { \
+ if (--ms < 0) { \
+ ret__ = -ETIMEDOUT; \
+ break; \
+ } \
+ DELAY(1000); \
+ } \
+ } else { \
+ unsigned long timeout__ = jiffies + msecs_to_jiffies(MS); \
+ while (!(COND)) { \
+ if (time_after(jiffies, timeout__)) { \
+ ret__ = -ETIMEDOUT; \
+ break; \
+ } \
+ if ((W) && drm_can_sleep()) { \
+ msleep(W); \
+ } else { \
+ cpu_relax(); \
+ } \
+ } \
+ } \
+ ret__; \
+})
+
+#define wait_for_atomic_us(COND, US) ({ \
+ int ret__ = 0; \
+ if (cold) { \
+ int us = (US); \
+ while (!(COND)) { \
+ if (--us < 0) { \
+ ret__ = -ETIMEDOUT; \
+ break; \
+ } \
+ DELAY(1); \
+ } \
+ } else { \
+ unsigned long timeout__ = jiffies + usecs_to_jiffies(US); \
+ while (!(COND)) { \
+ if (time_after(jiffies, timeout__)) { \
+ ret__ = -ETIMEDOUT; \
+ break; \
+ } \
+ cpu_relax(); \
+ } \
+ } \
+ ret__; \
+})
+#else /* !NetBSD */
#define _wait_for(COND, MS, W) ({ \
unsigned long timeout__ = jiffies + msecs_to_jiffies(MS); \
int ret__ = 0; \
@@ -63,6 +116,7 @@
} \
ret__; \
})
+#endif /* NetBSD */
#define wait_for(COND, MS) _wait_for(COND, MS, 1)
#define wait_for_atomic(COND, MS) _wait_for(COND, MS, 0)