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From: Adrian Chadd <adrian@FreeBSD.org>
Date: Wed, 18 Aug 2010 09:11:45 +0000 (UTC)
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Subject: svn commit: r211449 - head/sys/mips/atheros
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Author: adrian
Date: Wed Aug 18 09:11:45 2010
New Revision: 211449
URL: http://svn.freebsd.org/changeset/base/211449

Log:
  Add a DDR flush function, inspired by both Linux and if_arge.c.

Modified:
  head/sys/mips/atheros/ar71xxreg.h

Modified: head/sys/mips/atheros/ar71xxreg.h
==============================================================================
--- head/sys/mips/atheros/ar71xxreg.h	Wed Aug 18 08:22:58 2010	(r211448)
+++ head/sys/mips/atheros/ar71xxreg.h	Wed Aug 18 09:11:45 2010	(r211449)
@@ -491,5 +491,15 @@ ar71xx_ahb_freq(void)
 	return (freq);
 }
 
+static inline void
+ar71xx_ddr_flush(uint32_t reg)
+{ 
+	ATH_WRITE_REG(reg, 1);
+	while ((ATH_READ_REG(reg) & 0x1))
+		;
+	ATH_WRITE_REG(reg, 1);
+	while ((ATH_READ_REG(reg) & 0x1))
+		;
+} 
 
 #endif /* _AR71XX_REG_H_ */