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Date:      Mon, 19 Jul 2010 21:25:05 +0000 (UTC)
From:      Pyun YongHyeon <yongari@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   svn commit: r210259 - head/sys/dev/bce
Message-ID:  <201007192125.o6JLP5qY087075@svn.freebsd.org>
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Author: yongari
Date: Mon Jul 19 21:25:05 2010
New Revision: 210259
URL: http://svn.freebsd.org/changeset/base/210259

Log:
  Have bce_init_ctx() return error code and make caller check the
  return code. If context was not setup correctly give up
  initialization. While I'm here move variable declarations to the
  beginning of the function.
  
  Reviewed by:	davidch

Modified:
  head/sys/dev/bce/if_bce.c

Modified: head/sys/dev/bce/if_bce.c
==============================================================================
--- head/sys/dev/bce/if_bce.c	Mon Jul 19 21:24:48 2010	(r210258)
+++ head/sys/dev/bce/if_bce.c	Mon Jul 19 21:25:05 2010	(r210259)
@@ -429,7 +429,7 @@ static void bce_init_locked		(struct bce
 static void bce_init			(void *);
 static void bce_mgmt_init_locked	(struct bce_softc *sc);
 
-static void bce_init_ctx		(struct bce_softc *);
+static int  bce_init_ctx		(struct bce_softc *);
 static void bce_get_mac_addr		(struct bce_softc *);
 static void bce_set_mac_addr		(struct bce_softc *);
 static void bce_phy_intr		(struct bce_softc *);
@@ -4396,16 +4396,18 @@ bce_init_cpus(struct bce_softc *sc)
 /* Returns:                                                                 */
 /*   Nothing.                                                               */
 /****************************************************************************/
-static void
+static int
 bce_init_ctx(struct bce_softc *sc)
 {
+	u32 offset, val, vcid_addr;
+	int i, j, rc, retry_cnt;
 
+	rc = 0;
 	DBENTER(BCE_VERBOSE_RESET | BCE_VERBOSE_CTX);
 
 	if ((BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5709) ||
 	    (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5716)) {
-		int i, retry_cnt = CTX_INIT_RETRY_COUNT;
-		u32 val;
+		retry_cnt = CTX_INIT_RETRY_COUNT;
 
 		DBPRINT(sc, BCE_INFO_CTX, "Initializing 5709 context.\n");
 
@@ -4426,15 +4428,14 @@ bce_init_ctx(struct bce_softc *sc)
 				break;
 			DELAY(2);
 		}
-
-		/* ToDo: Consider returning an error here. */
-		DBRUNIF((val & BCE_CTX_COMMAND_MEM_INIT),
-		    BCE_PRINTF("%s(): Context memory initialization "
-		    "failed!\n", __FUNCTION__));
+		if ((val & BCE_CTX_COMMAND_MEM_INIT) != 0) {
+			BCE_PRINTF("%s(): Context memory initialization failed!\n",
+			    __FUNCTION__);
+			rc = EBUSY;
+			goto init_ctx_fail;
+		}
 
 		for (i = 0; i < sc->ctx_pages; i++) {
-			int j;
-
 			/* Set the physical address of the context memory. */
 			REG_WR(sc, BCE_CTX_HOST_PAGE_TBL_DATA0,
 			    BCE_ADDR_LO(sc->ctx_paddr[i] & 0xfffffff0) |
@@ -4452,14 +4453,14 @@ bce_init_ctx(struct bce_softc *sc)
 					break;
 				DELAY(5);
 			}
-
-			/* ToDo: Consider returning an error here. */
-			DBRUNIF((val & BCE_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ),
-			    BCE_PRINTF("%s(): Failed to initialize "
-			    "context page %d!\n", __FUNCTION__, i));
+			if ((val & BCE_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) != 0) {
+				BCE_PRINTF("%s(): Failed to initialize "
+				    "context page %d!\n", __FUNCTION__, i);
+				rc = EBUSY;
+				goto init_ctx_fail;
+			}
 		}
 	} else {
-		u32 vcid_addr, offset;
 
 		DBPRINT(sc, BCE_INFO, "Initializing 5706/5708 context.\n");
 
@@ -4486,7 +4487,9 @@ bce_init_ctx(struct bce_softc *sc)
 		}
 
 	}
+init_ctx_fail:
 	DBEXIT(BCE_VERBOSE_RESET | BCE_VERBOSE_CTX);
+	return (rc);
 }
 
 
@@ -4785,7 +4788,8 @@ bce_chipinit(struct bce_softc *sc)
 	    BCE_MISC_ENABLE_STATUS_BITS_CONTEXT_ENABLE);
 
 	/* Initialize context mapping and zero out the quick contexts. */
-	bce_init_ctx(sc);
+	if ((rc = bce_init_ctx(sc)) != 0)
+		goto bce_chipinit_exit;
 
 	/* Initialize the on-boards CPUs */
 	bce_init_cpus(sc);

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