Early debug of SAM3U MCI

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2587 42af7a65-404d-4744-a932-0658087f49c3

arch/arm/src/sam3u/sam3u_hsmci.c

@@ -890,6 +890,10 @@ static void sam3u_endtransfer(struct sam3u_dev_s *priv, sdio_eventset_t wkupeven
 
   sam3u_dmastop(priv->dma);
 
+  /* Disable the DMA handshaking */
+
+  putreg32(0, SAM3U_HSMCI_DMA);
+  
   /* Is a thread wait for these data transfer complete events? */
 
   if ((priv->waitevents & wkupevent) != 0)
@@ -1114,10 +1118,6 @@ static void sam3u_reset(FAR struct sdio_dev_s *dev)
 
   sam3u_notransfer(priv);
 
-  /* Disable the MCI peripheral clock */
-
-  putreg32((1 << SAM3U_PID_HSMCI), SAM3U_PMC_PCDR);
-
   /* Reset data */
 
   priv->waitevents = 0;      /* Set of events to be waited for */
@@ -1508,6 +1508,11 @@ static int sam3u_cancel(FAR struct sdio_dev_s *dev)
    */
 
   sam3u_dmastop(priv->dma);
+
+  /* Disable the DMA handshaking */
+
+  putreg32(0, SAM3U_HSMCI_DMA);
+  
   return OK;
 }
 
@@ -2052,10 +2057,14 @@ static int sam3u_dmarecvsetup(FAR struct sdio_dev_s *dev, FAR uint8_t *buffer,
 
   sam3u_enablexfrints(priv, HSMCI_DMARECV_INTS);
   sam3u_dmarxsetup(priv->dma, SAM3U_HSMCI_FIFO, (uint32_t)buffer, buflen);
- 
+
+  /* Enable DMA handshaking */
+
+  putreg32(HSMCI_DMA_DMAEN, SAM3U_HSMCI_DMA);
+  sam3u_sample(priv, SAMPLENDX_BEFORE_ENABLE);
+
   /* Start the DMA */
 
-  sam3u_sample(priv, SAMPLENDX_BEFORE_ENABLE);
   sam3u_dmastart(priv->dma, sam3u_dmacallback, priv);
   sam3u_sample(priv, SAMPLENDX_AFTER_SETUP);
   return OK;
@@ -2096,6 +2105,10 @@ static int sam3u_dmasendsetup(FAR struct sdio_dev_s *dev,
   /* Configure the TX DMA */
 
   sam3u_dmatxsetup(priv->dma, SAM3U_HSMCI_FIFO, (uint32_t)buffer, buflen);
+
+  /* Enable DMA handshaking */
+
+  putreg32(HSMCI_DMA_DMAEN, SAM3U_HSMCI_DMA);
   sam3u_sample(priv, SAMPLENDX_BEFORE_ENABLE);
 
   /* Start the DMA */
@@ -2214,6 +2227,8 @@ FAR struct sdio_dev_s *sdio_initialize(int slotno)
 
   struct sam3u_dev_s *priv = &g_sdiodev;
 
+  fdbg("slotno: %d\n", slotno);
+
   /* Initialize the HSMCI slot structure */
 
   sem_init(&priv->waitsem, 0, 0);

arch/arm/src/sam3u/sam3u_memorymap.h

@@ -1,7 +1,7 @@
 /************************************************************************************************
  * arch/arm/src/sam3u/sam3u_memorymap.h
  *
- *   Copyright (C) 2009 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2009-2010 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * Redistribution and use in source and binary forms, with or without

configs/sam3u-ek/src/sam3uek_internal.h

@@ -119,7 +119,7 @@ extern void weak_function sam3u_usbinitialize(void);
 #ifdef CONFIG_SAM3U_HSMCI
 extern int weak_function sam3u_hsmciinit(void);
 #else
-# define sam3u_boardmciinit()
+# define sam3u_hsmciinit()
 #endif
 
 /****************************************************************************

configs/sam3u-ek/src/up_mmcsd.c

@@ -70,39 +70,42 @@
  * Public Functions
  ************************************************************************************/
 
-/****************************************************************************
+/************************************************************************************
  * Name: sam3u_hsmciinit
  *
  * Description:
- *   Initialize HSMCI support 
+ *   Initialize HSMCI support.  This function is called very early in board
+ *   initialization.
  *
- ****************************************************************************/
+ ************************************************************************************/
 
 int sam3u_hsmciinit(void)
 {
-#if GPIO_MCI_CD
+#ifdef GPIO_MCI_CD
   sam3u_configgpio(GPIO_MCI_CD);
 #endif
-#if GPIO_MCI_WP
+#ifdef GPIO_MCI_WP
   sam3u_configgpio(GPIO_MCI_WP);
 #endif
   return OK;
 }
 
-/****************************************************************************
+/************************************************************************************
  * Name: sam3u_cardinserted
  *
  * Description:
  *   Check if a card is inserted into the selected HSMCI slot
  *
- ****************************************************************************/
+ ************************************************************************************/
 
 bool sam3u_cardinserted(unsigned char slot)
 {
   if (slot == 0)
     {
 #ifdef GPIO_MCI_CD
-      return !sam3u_gpioread(GPIO_MCI_CD);
+      bool inserted = sam3u_gpioread(GPIO_MCI_CD);
+      fvdbg("inserted: %s\n", inserted ? "NO" : "YES");
+      return !inserted;
 #else
       return true;
 #endif
@@ -110,20 +113,22 @@ bool sam3u_cardinserted(unsigned char slot)
   return false;
 }
 
-/****************************************************************************
+/************************************************************************************
  * Name: sam3u_writeprotected
  *
  * Description:
  *   Check if a card is inserted into the selected HSMCI slot
  *
- ****************************************************************************/
+ ************************************************************************************/
 
 bool sam3u_writeprotected(unsigned char slot)
 {
   if (slot == 0)
     {
 #ifdef GPIO_MCI_WP
-      return sam3u_gpioread(GPIO_MCI_WP);
+      bool protected = sam3u_gpioread(GPIO_MCI_WP);
+      fvdbg("protected: %s\n", inserted ? "YES" : "NO");
+      return protected;
 #else
       return false;
 #endif

configs/sam3u-ek/src/up_nsh.c

@@ -100,13 +100,13 @@
 
 #ifdef CONFIG_CPP_HAVE_VARARGS
 #  ifdef CONFIG_DEBUG
-#    define message(...) lib_lowprintf(__VA_ARGS__)
+#    define message(...) lib_rawprintf(__VA_ARGS__)
 #  else
 #    define message(...) printf(__VA_ARGS__)
 #  endif
 #else
 #  ifdef CONFIG_DEBUG
-#    define message lib_lowprintf
+#    define message lib_rawprintf
 #  else
 #    define message printf
 #  endif