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Patch by Robert Schwebel, April 02, 2003:
fix for SMSC91111 driver

wdenk 22 年之前
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共有 3 個文件被更改,包括 18 次插入1 次删除
  1. 3 0
      CHANGELOG
  2. 14 0
      drivers/smc91111.c
  3. 1 1
      drivers/smc91111.h

+ 3 - 0
CHANGELOG

@@ -2,6 +2,9 @@
 Changes since U-Boot 0.3.1:
 ======================================================================
 
+* Patch by Robert Schwebel, April 02, 2003:
+  fix for SMSC91111 driver
+
 * Patch by Vladimir Gurevich, 04 Jun 2003:
   make ppc405 ethernet driver compatible with CONFIG_NET_MULTI option
 

+ 14 - 0
drivers/smc91111.c

@@ -317,6 +317,17 @@ static int poll4int( byte mask, int timeout ) {
 	return 0;
 }
 
+/* Only one release command at a time, please */
+static inline void smc_wait_mmu_release_complete(void)
+{
+	int count = 0;
+	/* assume bank 2 selected */
+	while ( SMC_inw(MMU_CMD_REG) & MC_BUSY ) {
+		udelay(1); // Wait until not busy
+		if( ++count > 200) break;
+	}
+}
+
 /*
  . Function: smc_reset( void )
  . Purpose:
@@ -374,6 +385,7 @@ static void smc_reset( void )
 
 	/* Reset the MMU */
 	SMC_SELECT_BANK( 2 );
+	smc_wait_mmu_release_complete();
 	SMC_outw( MC_RESET, MMU_CMD_REG );
 	while ( SMC_inw( MMU_CMD_REG ) & MC_BUSY )
 		udelay(1); /* Wait until not busy */
@@ -674,6 +686,8 @@ static int smc_open()
 /*	SMC_SELECT_BANK(0); */
 /*	SMC_outw(0, RPC_REG); */
 
+	SMC_SELECT_BANK(1);
+
 #ifdef USE_32_BIT
 	for ( i = 0; i < 6; i += 2 ) {
 		word address;

+ 1 - 1
drivers/smc91111.h

@@ -80,7 +80,7 @@ typedef unsigned long int 		dword;
 #define	SMC_inw(r) 	(*((volatile word *)(SMC_BASE_ADDRESS+(r))))
 #define SMC_inb(p)	({ \
 	unsigned int __p = (unsigned int)(SMC_BASE_ADDRESS + (p)); \
-	unsigned int __v = *(volatile unsigned short *)((SMC_BASE_ADDRESS + __p) & ~1); \
+	unsigned int __v = *(volatile unsigned short *)((__p) & ~1); \
 	if (__p & 1) __v >>= 8; \
 	else __v &= 0xff; \
 	__v; })