Redesign SDIO wait logic; add SDIO DMA logic
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2261 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
parent
b1742905ff
commit
2740d04258
@ -48,7 +48,8 @@
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#include "chip.h"
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#include "up_arch.h"
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#include "stm32_internal.h"
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#include "stm32_internal.h"
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#include "stm32_dma.h"
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#include "stm32_sdio.h"
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#if CONFIG_STM32_SDIO
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@ -62,6 +63,10 @@
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#if defined(CONFIG_SDIO_DMA) && !defined(CONFIG_STM32_DMA2)
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# warning "CONFIG_SDIO_DMA support requires CONFIG_STM32_DMA2"
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# undef CONFIG_SDIO_DMA
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#endif
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#ifndef CONFIG_SDIO_DMAPRIO
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# define CONFIG_SDIO_DMAPRIO DMA_CCR_PRIMED
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#endif
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/* Friendly CLKCR bit re-definitions ****************************************/
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@ -87,6 +92,13 @@
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#define SDIO_CMDTIMEOUT 100000
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#define SDIO_LONGTIMEOUT 0x7fffffff
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/* DMA CCR register settings */
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#define SDIO_RXDMA16_CONFIG (CONFIG_SDIO_DMAPRIO|DMA_CCR_MSIZE_16BITS|\
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DMA_CCR_PSIZE_16BITS|DMA_CCR_MINC)
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#define SDIO_TXDMA16_CONFIG (CONFIG_SDIO_DMAPRIO|DMA_CCR_MSIZE_16BITS|\
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DMA_CCR_PSIZE_16BITS|DMA_CCR_MINC|DMA_CCR_DIR)
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/****************************************************************************
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* Private Types
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@ -96,11 +108,21 @@
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struct stm32_dev_s
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{
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struct sdio_dev_s dev; /* Standard, base MMC/SD interface */
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struct sdio_dev_s dev; /* Standard, base MMC/SD interface */
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/* STM32-specific extensions */
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ubyte type; /* Card type (see MMCSD_CARDTYPE_ definitions) */
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sem_t eventsem; /* Implements event waiting */
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sdio_event_t waitevents; /* Set of events to be waited for */
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volatile sdio_event_t wkupevents; /* Set of events that caused the wakeup */
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sdio_event_t cbevents; /* Set of events to be cause callbacks */
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sdio_mediachange_t callback; /* Registered callback function */
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/* DMA support */
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#ifdef CONFIG_SDIO_DMA
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DMA_HANDLE dma; /* Handle for DMA channel */
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#endif
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};
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/****************************************************************************
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@ -109,6 +131,8 @@ struct stm32_dev_s
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/* Low-level helpers ********************************************************/
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static void stm32_takesem(struct stm32_dev_s *priv);
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#define stm32_givesem(priv) (sem_post(&priv->waitsem))
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static inline void stm32_setclkcr(uint32 clkcr);
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static inline void stm32_enableint(uint32 bitset);
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static inline void stm32_disableint(uint32 bitset);
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@ -117,9 +141,11 @@ static inline uint32 stm32_getpwrctrl(void);
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static inline void stm32_clkenable(void)
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static inline void stm32_clkdisable(void)
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/* DMA Helpers **************************************************************/
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static inline void stm32_dmaenable(void);
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/* DMA Helpers **************************************************************/
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#ifdef CONFIG_SDIO_DMA
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static void stm32_dmacallback(DMA_HANDLE handle, ubyte isr, void *arg);
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#endif
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/* Data Transfer Helpers ****************************************************/
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@ -155,10 +181,11 @@ static int stm32_recvdata(FAR struct sdio_dev_s *dev, FAR ubyte *buffer);
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/* EVENT handler */
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static void stm32_eventenable(FAR struct sdio_dev_s *dev, sdio_event_t eventset,
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static void stm32_waitenable(FAR struct sdio_dev_s *dev, sdio_event_t eventset,
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boolean enable);
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static ubyte stm32_eventwait(FAR struct sdio_dev_s *dev, uint32 timeout);
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static ubyte stm32_events(FAR struct sdio_dev_s *dev);
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static void stm32_callbackenable(FAR struct sdio_dev_s *dev, sdio_event_t eventset);
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static int stm32_registercallback(FAR struct sdio_dev_s *dev,
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sdio_mediachange_t callback, void *arg)
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@ -166,23 +193,18 @@ static int stm32_registercallback(FAR struct sdio_dev_s *dev,
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#ifdef CONFIG_SDIO_DMA
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static boolean stm32_dmasupported(FAR struct sdio_dev_s *dev);
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#ifdef CONFIG_DATA_CACHE
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static void stm32_coherent(FAR struct sdio_dev_s *dev, FAR void *addr,
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size_t len, boolean write);
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#endif
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static int stm32_dmareadsetup(FAR struct sdio_dev_s *dev,
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FAR ubyte *buffer);
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FAR ubyte *buffer, size_t buflen);
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static int stm32_dmawritesetup(FAR struct sdio_dev_s *dev,
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FAR const ubyte *buffer);
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static int stm32_dmaenable(FAR struct sdio_dev_s *dev);
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FAR const ubyte *buffer, size_t buflen);
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static int stm32_dmastart(FAR struct sdio_dev_s *dev);
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static int stm32_dmastop(FAR struct sdio_dev_s *dev);
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static int stm32_dmastatus(FAR struct sdio_dev_s *dev,
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size_t *remaining);
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#endif
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/* Initialization/uninitialization/reset ************************************/
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static void stm32_callback(void *arg);
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static void stm32_default(void);
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/****************************************************************************
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@ -193,38 +215,35 @@ struct stm32_dev_s g_mmcsd =
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{
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.dev =
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{
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.reset = stm32_reset,
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.status = stm32_status,
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.widebus = stm32_widebus,
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.clock = stm32_clock,
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.attach = stm32_attach,
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.sendcmd = stm32_sendcmd,
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.sendsetup = stm32_sendsetup,
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.senddata = stm32_senddata,
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.waitresponse = stm32_waitresponse,
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.recvR1 = stm32_recvshortcrc,
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.recvR2 = stm32_recvlong,
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.recvR3 = stm32_recvshort,
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.recvR4 = stm32_recvnotimpl,
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.recvR5 = stm32_recvnotimpl,
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.recvR6 = stm32_recvshortcrc,
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.recvR7 = stm32_recvshort,
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.recvsetup = stm32_recvsetup,
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.recvdata = stm32_recvdata,
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.eventenable = stm32_eventenable,
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.eventwait = stm32_eventwait,
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.events = stm32_events,
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.reset = stm32_reset,
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.status = stm32_status,
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.widebus = stm32_widebus,
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.clock = stm32_clock,
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.attach = stm32_attach,
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.sendcmd = stm32_sendcmd,
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.sendsetup = stm32_sendsetup,
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.senddata = stm32_senddata,
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.waitresponse = stm32_waitresponse,
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.recvR1 = stm32_recvshortcrc,
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.recvR2 = stm32_recvlong,
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.recvR3 = stm32_recvshort,
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.recvR4 = stm32_recvnotimpl,
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.recvR5 = stm32_recvnotimpl,
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.recvR6 = stm32_recvshortcrc,
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.recvR7 = stm32_recvshort,
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.recvsetup = stm32_recvsetup,
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.recvdata = stm32_recvdata,
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.waitenable = stm32_waitenable,
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.eventwait = stm32_eventwait,
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.events = stm32_events,
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.callbackenable = stm32_callbackenable,
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.registercallback = stm32_registercallback,
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#ifdef CONFIG_SDIO_DMA
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.dmasupported = stm32_dmasupported,
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#ifdef CONFIG_DATA_CACHE
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.coherent = stm32_coherent,
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#endif
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.dmareadsetup = stm32_dmareadsetup,
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.dmawritesetup = stm32_dmawritesetup,
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.dmaenable = stm32_dmaenable,
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.dmastart = stm32_dmastart,
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.dmastop = stm32_dmastop,
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.dmastatus = stm32_dmastatus,
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.dmasupported = stm32_dmasupported,
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.dmareadsetup = stm32_dmareadsetup,
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.dmawritesetup = stm32_dmawritesetup,
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.dmastart = stm32_dmastart,
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.dmastatus = stm32_dmastatus,
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#endif
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},
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};
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@ -236,6 +255,35 @@ struct stm32_dev_s g_mmcsd =
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/****************************************************************************
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* Low-level Helpers
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****************************************************************************/
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/****************************************************************************
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* Name: stm32_takesem
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*
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* Description:
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* Take the wait semaphore (handling false alarm wakeups due to the receipt
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* of signals).
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*
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* Input Parameters:
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* dev - Instance of the SDIO device driver state structure.
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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static void stm32_takesem(struct stm32_dev_s *priv)
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{
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/* Take the semaphore (perhaps waiting) */
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while (sem_wait(&priv->waitsem) != 0)
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{
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/* The only case that an error should occr here is if the wait was
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* awakened by a signal.
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*/
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ASSERT(errno == EINTR);
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}
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}
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/****************************************************************************
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* Name: stm32_setclkcr
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*
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@ -373,11 +421,32 @@ static inline void stm32_clkdisable(void)
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/****************************************************************************
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* DMA Helpers
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****************************************************************************/
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static inline void stm32_dmaenable(void)
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{
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putreg32(1, SDIO_DCTRL_DMAEN_BB);
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}
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****************************************************************************/
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/****************************************************************************
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* Name: stm32_dmacallback
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*
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* Description:
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* Called when SDIO DMA completes
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*
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****************************************************************************/
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#ifdef CONFIG_SDIO_DMA
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static void stm32_dmacallback(DMA_HANDLE handle, ubyte isr, void *arg)
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{
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FAR struct stm32_spidev_s *priv = (FAR struct stm32_spidev_s *)arg;
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/* Is a data transfer complete event expected? */
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if ((priv->waitevents & SDIOWAIT_TRANSFERDONE) != 0)
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{
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/* Yes, wake up the waiting thread */
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priv->wkupevent = SDIOWAIT_TRANSFERDONE;
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sdio_semgive(priv);
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}
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}
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#endif
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/****************************************************************************
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* Data Transfer Helpers
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@ -1008,14 +1077,22 @@ static int stm32_recvdata(FAR struct sdio_dev_s *dev, FAR ubyte *buffer)
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}
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/****************************************************************************
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* Name: stm32_eventenable
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* Name: stm32_waitenable
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*
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* Description:
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* Enable/disable notification of a set of MMC/SD events
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* Enable/disable of a set of MMC/SD wait events. This is part of the
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* the SDIO_WAITEVENT sequence. The set of to-be-waited-for events is
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* configured before calling stm32_waitevent. This is done in this way
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* to help the driver to eliminate race conditions between the command
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* setup and the subsequent events.
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*
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* The enabled events persist until either (1) SDIO_WAITENABLE is called
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* again specifying a different set of wait events, or (2) SDIO_EVENTWAIT
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* returns.
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*
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* Input Parameters:
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* dev - An instance of the MMC/SD device interface
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* eventset - A bitset of events to enable or disable (see MMCSDEVENT_*
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* eventset - A bitset of events to enable or disable (see SDIOWAIT_*
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* definitions). 0=disable; 1=enable.
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*
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* Returned Value:
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@ -1023,15 +1100,26 @@ static int stm32_recvdata(FAR struct sdio_dev_s *dev, FAR ubyte *buffer)
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*
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****************************************************************************/
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static void stm32_eventenable(FAR struct sdio_dev_s *dev, sdio_event_t eventset)
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{
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static void stm32_waitenable(FAR struct sdio_dev_s *dev, sdio_event_t eventset)
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{
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struct stm32_dev_s *priv = (struct stm32_dev_s*)dev;
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/* This odd sequence avoids race conditions */
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DEBUGASSERT(priv != NULL);
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priv->waitevents = 0;
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priv->wkupevents = 0;
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priv->waitevents = eventset;
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}
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/****************************************************************************
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* Name: stm32_eventwait
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*
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* Description:
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* Wait for one of the enabled events to occur (or a timeout)
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* Wait for one of the enabled events to occur (or a timeout). Note that
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* all events enabled by SDIO_WAITEVENTS are disabled when stm32_eventwait
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* returns. SDIO_WAITEVENTS must be called again before stm32_eventwait
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* can be used again.
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*
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* Input Parameters:
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* dev - An instance of the MMC/SD device interface
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@ -1045,8 +1133,42 @@ static void stm32_eventenable(FAR struct sdio_dev_s *dev, sdio_event_t eventset)
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****************************************************************************/
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static ubyte stm32_eventwait(FAR struct sdio_dev_s *dev, uint32 timeout)
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{
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return 0;
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{
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ubyte wkupevents = 0;
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DEBUGASSERT(priv->waitevents != 0);
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/* Loop until the event (or the timeout occurs). Race conditions are avoided
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* by calling stm32_waitenable prior to triggering the logic that will cause
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* the wait to terminate. Under certain race conditions, the waited-for
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* may have already occurred before this function was called!
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*/
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#warning "Timeout logic not implemented"
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for (;;)
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{
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/* Wait for an event in event set to occur. If this the event has already
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* occurred, then the semaphore will already have been incremented and
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* there will be no wait.
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*/
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stm32_takesem(priv);
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/* Check if the event has occurred. */
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wkupevents = (ubyte)(priv->wkupevents & priv->waitevents)
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if (wkupevents != 0)
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{
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/* Yes... break out of the loop with wkupevents non-zero */
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break;
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}
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}
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/* Clear all enabled wait events before returning */
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priv->waitevents = 0;
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priv->wkupevents = 0;
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return wkupevents;
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}
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/****************************************************************************
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@ -1070,6 +1192,36 @@ static ubyte stm32_events(FAR struct sdio_dev_s *dev)
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return 0;
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}
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/****************************************************************************
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* Name: stm32_callbackenable
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*
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* Description:
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* Enable/disable of a set of MMC/SD callback events. This is part of the
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* the SDIO callback sequence. The set of events is configured to enabled
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* callbacks to the function provided in stm32_registercallback.
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*
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* Events are automatically disabled once the callback is performed and no
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* further callback events will occur until they are again enabled by
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* calling this methos.
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*
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* Input Parameters:
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* dev - An instance of the MMC/SD device interface
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* eventset - A bitset of events to enable or disable (see SDIOMEDIA_*
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* definitions). 0=disable; 1=enable.
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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static void stm32_callbackenable(FAR struct sdio_dev_s *dev, sdio_event_t eventset)
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{
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struct stm32_dev_s *priv = (struct stm32_dev_s*)dev;
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DEBUGASSERT(priv != NULL);
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priv->cbevents = eventset;
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stm32_callback(priv);
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}
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/****************************************************************************
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* Name: stm32_registercallback
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*
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@ -1079,6 +1231,9 @@ static ubyte stm32_events(FAR struct sdio_dev_s *dev)
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* interrupt level events should be handled by calling back on the work
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* thread.
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*
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* When this method is called, all callbacks should be disabled until they
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* are enabled via a call to SDIO_CALLBACKENABLE
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*
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* Input Parameters:
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* dev - Device-specific state data
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* callback - The funtion to call on the media change
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@ -1092,7 +1247,15 @@ static ubyte stm32_events(FAR struct sdio_dev_s *dev)
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static int stm32_registercallback(FAR struct sdio_dev_s *dev,
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sdio_mediachange_t callback, void *arg)
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{
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return -ENOSYS;
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struct stm32_dev_s *priv = (struct stm32_dev_s*)dev;
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/* Disable callbacks and register this callback and is argument */
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DEBUGASSERT(priv != NULL);
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priv->cbevents = 0;
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priv->cbarg = arg;
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priv->callback = callback;
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return OK;
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}
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/****************************************************************************
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@ -1116,44 +1279,19 @@ static boolean stm32_dmasupported(FAR struct sdio_dev_s *dev)
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}
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#endif
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/****************************************************************************
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* Name: stm32_coherent
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*
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* Description:
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* If the processor supports a data cache, then this method will make sure
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* that the contents of the DMA memory and the data cache are coherent in
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* preparation for the DMA transfer. For write transfers, this may mean
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* flushing the data cache, for read transfers this may mean invalidating
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* the data cache.
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*
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* Input Parameters:
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* dev - An instance of the MMC/SD device interface
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* addr - The beginning address of the DMA
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* len - The length of the DMA
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* write - TRUE: A write DMA will be performed; FALSE: a read DMA will be
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* performed.
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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|
||||
#if defined(CONFIG_SDIO_DMA) && defined(CONFIG_DATA_CACHE)
|
||||
static void stm32_coherent(FAR struct sdio_dev_s *dev, FAR void *addr,
|
||||
size_t len, boolean write)
|
||||
{
|
||||
}
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: stm32_dmareadsetup
|
||||
*
|
||||
* Description:
|
||||
* Setup to perform a read DMA
|
||||
* Setup to perform a read DMA. If the processor supports a data cache,
|
||||
* then this method will also make sure that the contents of the DMA memory
|
||||
* and the data cache are coherent. For read transfers this may mean
|
||||
* invalidating the data cache.
|
||||
*
|
||||
* Input Parameters:
|
||||
* dev - An instance of the MMC/SD device interface
|
||||
* buffer - The memory to DMA from
|
||||
* buflen - The size of the DMA transfer in bytes
|
||||
*
|
||||
* Returned Value:
|
||||
* OK on success; a negated errno on failure
|
||||
@ -1161,9 +1299,12 @@ static void stm32_coherent(FAR struct sdio_dev_s *dev, FAR void *addr,
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_SDIO_DMA
|
||||
static int tm32_dmareadsetup(FAR struct sdio_dev_s *dev, FAR ubyte *buffer)
|
||||
static int tm32_dmareadsetup(FAR struct sdio_dev_s *dev, FAR ubyte *buffer, size_t buflen)
|
||||
{
|
||||
return -ENOSYS;
|
||||
/* Configure the RX DMA */
|
||||
|
||||
stm32_dmasetup(priv->dma, STM32_SDIO_FIFO, (uint32)buffer,
|
||||
(buflen + 3) >> 2, SDIO_RXDMA16_CONFIG);
|
||||
}
|
||||
#endif
|
||||
|
||||
@ -1171,11 +1312,15 @@ static int tm32_dmareadsetup(FAR struct sdio_dev_s *dev, FAR ubyte *buffer)
|
||||
* Name: stm32_dmawritesetup
|
||||
*
|
||||
* Description:
|
||||
* Setup to perform a write DMA
|
||||
* Setup to perform a write DMA. If the processor supports a data cache,
|
||||
* then this method will also make sure that the contents of the DMA memory
|
||||
* and the data cache are coherent. For write transfers, this may mean
|
||||
* flushing the data cache.
|
||||
*
|
||||
* Input Parameters:
|
||||
* dev - An instance of the MMC/SD device interface
|
||||
* buffer - The memory to DMA into
|
||||
* buflen - The size of the DMA transfer in bytes
|
||||
*
|
||||
* Returned Value:
|
||||
* OK on success; a negated errno on failure
|
||||
@ -1184,9 +1329,12 @@ static int tm32_dmareadsetup(FAR struct sdio_dev_s *dev, FAR ubyte *buffer)
|
||||
|
||||
#ifdef CONFIG_SDIO_DMA
|
||||
static int stm32_dmawritesetup(FAR struct sdio_dev_s *dev,
|
||||
FAR const ubyte *buffer)
|
||||
FAR const ubyte *buffer, size_t buflen)
|
||||
{
|
||||
return -ENOSYS;
|
||||
/* Configure the RX DMA */
|
||||
|
||||
stm32_dmasetup(priv->dma, STM32_SDIO_FIFO, (uint32)buffer,
|
||||
(buflen + 3) >> 2, SDIO_TXDMA16_CONFIG);
|
||||
}
|
||||
#endif
|
||||
|
||||
@ -1206,29 +1354,8 @@ static int stm32_dmawritesetup(FAR struct sdio_dev_s *dev,
|
||||
|
||||
#ifdef CONFIG_SDIO_DMA
|
||||
static int stm32_dmastart(FAR struct sdio_dev_s *dev)
|
||||
{
|
||||
return -ENOSYS;
|
||||
}
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: stm32_dmastop
|
||||
*
|
||||
* Description:
|
||||
* Stop the DMA
|
||||
*
|
||||
* Input Parameters:
|
||||
* dev - An instance of the MMC/SD device interface
|
||||
*
|
||||
* Returned Value:
|
||||
* OK on success; a negated errno on failure
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_SDIO_DMA
|
||||
static int stm32_dmastop(FAR struct sdio_dev_s *dev)
|
||||
{
|
||||
return -ENOSYS;
|
||||
{
|
||||
stm32_dmastart(priv->dma, sdio_dmacallback, priv, FALSE);
|
||||
}
|
||||
#endif
|
||||
|
||||
@ -1236,7 +1363,7 @@ static int stm32_dmastop(FAR struct sdio_dev_s *dev)
|
||||
* Name: stm32_dmastatus
|
||||
*
|
||||
* Description:
|
||||
* Returnt the number of bytes remaining in the DMA transfer
|
||||
* Return the number of bytes remaining in the DMA transfer
|
||||
*
|
||||
* Input Parameters:
|
||||
* dev - An instance of the MMC/SD device interface
|
||||
@ -1268,6 +1395,63 @@ static int stm32_dmastatus(FAR struct sdio_dev_s *dev, size_t *remaining)
|
||||
/****************************************************************************
|
||||
* Initialization/uninitialization/reset
|
||||
****************************************************************************/
|
||||
/****************************************************************************
|
||||
* Name: stm32_callback
|
||||
*
|
||||
* Description:
|
||||
* Perform callback.
|
||||
*
|
||||
* Assumptions:
|
||||
* This function does not execute in the context of an interrupt handler.
|
||||
* It may be invoked on any user thread or scheduled on the work thread
|
||||
* from an interrupt handler.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static void stm32_callback(void *arg)
|
||||
{
|
||||
struct stm32_dev_s *priv = (struct stm32_dev_s*)arg;
|
||||
|
||||
/* Is a callback registered? */
|
||||
|
||||
DEBUGASSERT(priv != NULL);
|
||||
if (priv->callback)
|
||||
{
|
||||
/* Yes.. Check for enabled callback events */
|
||||
|
||||
if ((stm32_status(&priv->dev) & SDIO_STATUS_PRESENT) != 0)
|
||||
{
|
||||
/* Media is present. Is the media inserted event enabled? */
|
||||
|
||||
if ((priv->cbevents & SDIOMEDIA_INSERTED) == 0)
|
||||
{
|
||||
/* No... return without performing the callback */
|
||||
|
||||
return;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Media is not present. Is the media eject event enabled? */
|
||||
|
||||
if ((priv->cbevents & SDIOMEDIA_EJECTED) == 0)
|
||||
{
|
||||
/* No... return without performing the callback */
|
||||
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
/* Perform the callback, disabling further callbacks. Of course, the
|
||||
* the callback can (and probably should) re-enable callbacks.
|
||||
*/
|
||||
|
||||
priv->cbevents = 0;
|
||||
priv->callback(priv->cbarg);
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: stm32_default
|
||||
*
|
||||
@ -1294,24 +1478,35 @@ static void stm32_default(void)
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: mmcsd_slotinitialize
|
||||
* Name: sdio_initialize
|
||||
*
|
||||
* Description:
|
||||
* Initialize one slot for operation using the MMC/SD interface
|
||||
* Initialize SDIO for operation.
|
||||
*
|
||||
* Input Parameters:
|
||||
* minor - The MMC/SD minor device number. The MMC/SD device will be
|
||||
* registered as /dev/mmcsdN where N is the minor number
|
||||
* slotno - The slot number to use. This is only meaningful for architectures
|
||||
* that support multiple MMC/SD slots. This value must be in the range
|
||||
* {0, ..., CONFIG_MMCSD_NSLOTS}.
|
||||
* dev - And instance of an MMC/SD interface. The MMC/SD hardware should
|
||||
* be initialized and ready to use.
|
||||
* Input Parameters:
|
||||
* slotno - Not used.
|
||||
*
|
||||
* Returned Values:
|
||||
* A reference to an SDIO interface structure. NULL is returned on failures.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int mmcsd_slotinitialize(int minor, int slotno, FAR struct sdio_dev_s *dev)
|
||||
{
|
||||
FAR sdio_dev_s *mmcsd_slotinitialize(int slotno)
|
||||
{
|
||||
/* There is only one, slot */
|
||||
|
||||
struct stm32_dev_s *priv = &g_sdiodev;
|
||||
|
||||
/* Initialize the SDIO slot structure */
|
||||
|
||||
sem_init(&priv->eventsem, 0, 0);
|
||||
|
||||
/* Allocate a DMA channel */
|
||||
|
||||
#ifdef CONFIG_SDIO_DMA
|
||||
priv->dma = stm32_dmachannel(DMACHAN_SDIO);
|
||||
#endif
|
||||
|
||||
/* Configure GPIOs for 4-bit, wide-bus operation (the chip is capable of
|
||||
* 8-bit wide bus operation but D4-D7 are not configured).
|
||||
*/
|
||||
@ -1332,8 +1527,8 @@ int mmcsd_slotinitialize(int minor, int slotno, FAR struct sdio_dev_s *dev)
|
||||
stm32_setclkcr(STM32_CLCKCR_INIT);
|
||||
stm32_setpwrctrl(SDIO_POWER_PWRCTRL_ON);
|
||||
stm32_clkenable(ENABLE);
|
||||
|
||||
return -ENOSYS;
|
||||
|
||||
return &g_sdiodev.dev;
|
||||
}
|
||||
|
||||
#endif /* CONFIG_STM32_SDIO */
|
||||
|
||||
@ -372,7 +372,7 @@ static int mmcsd_getSCR(struct mmcsd_state_s *priv, uint32 scr[2])
|
||||
|
||||
/* Send ACMD51 SD_APP_SEND_SCR with argument as 0 to start data receipt */
|
||||
|
||||
(void)SDIO_EVENTENABLE(priv->dev, SDIOEVENT_READDATADONE);
|
||||
(void)SDIO_WAITENABLE(priv->dev, SDIOWAIT_TRANSFERDONE);
|
||||
mmcsd_sendcmdpoll(priv, SD_ACMD51, 0);
|
||||
ret = mmcsd_recvR1(priv, SD_ACMD51);
|
||||
if (ret != OK)
|
||||
@ -1063,6 +1063,10 @@ static int mmcsd_ioctl(FAR struct inode *inode, int cmd, unsigned long arg)
|
||||
{
|
||||
fdbg("ERROR: mmcsd_removed failed: %d\n", ret);
|
||||
}
|
||||
|
||||
/* Enable logic to detect if a card is re-inserted */
|
||||
|
||||
SDIO_CALLBACKENABLE(priv->dev, SDIOMEDIA_INSERTED);
|
||||
}
|
||||
break;
|
||||
|
||||
@ -1117,6 +1121,10 @@ static void mmcsd_mediachange(FAR void *arg)
|
||||
*/
|
||||
|
||||
(void)mmcsd_removed(priv);
|
||||
|
||||
/* Enable logic to detect if a card is re-inserted */
|
||||
|
||||
SDIO_CALLBACKENABLE(priv->dev, SDIOMEDIA_INSERTED);
|
||||
}
|
||||
mmcsd_givesem(priv);
|
||||
}
|
||||
@ -1743,7 +1751,7 @@ static int mmcsd_probe(struct mmcsd_state_s *priv)
|
||||
if (ret != OK)
|
||||
{
|
||||
fdbg("ERROR: Failed to initialize card: %d\n");
|
||||
SDIO_EVENTENABLE(priv->dev, SDIOEVENT_INSERTED);
|
||||
SDIO_CALLBACKENABLE(priv->dev, SDIOMEDIA_INSERTED);
|
||||
}
|
||||
else
|
||||
{
|
||||
@ -1780,7 +1788,7 @@ static int mmcsd_probe(struct mmcsd_state_s *priv)
|
||||
|
||||
/* Set up to receive asynchronous, media removal events */
|
||||
|
||||
SDIO_EVENTENABLE(priv->dev, SDIOEVENT_EJECTED);
|
||||
SDIO_CALLBACKENABLE(priv->dev, SDIOMEDIA_EJECTED);
|
||||
}
|
||||
}
|
||||
|
||||
@ -1793,7 +1801,7 @@ static int mmcsd_probe(struct mmcsd_state_s *priv)
|
||||
/* There is no card in the slot */
|
||||
|
||||
fvdbg("No card\n");
|
||||
SDIO_EVENTENABLE(priv->dev, SDIOEVENT_INSERTED);
|
||||
SDIO_CALLBACKENABLE(priv->dev, SDIOMEDIA_INSERTED);
|
||||
ret = -ENODEV;
|
||||
}
|
||||
|
||||
@ -1835,10 +1843,6 @@ static int mmcsd_removed(struct mmcsd_state_s *priv)
|
||||
/* Disable clocking to the card */
|
||||
|
||||
(void)SDIO_CLOCK(priv->dev, CLOCK_SDIO_DISABLED);
|
||||
|
||||
/* Enable logic to detect if a card is re-inserted */
|
||||
|
||||
SDIO_EVENTENABLE(priv->dev, SDIOEVENT_INSERTED);
|
||||
return OK;
|
||||
}
|
||||
|
||||
@ -1874,7 +1878,7 @@ static int mmcsd_hwinitialize(struct mmcsd_state_s *priv)
|
||||
fvdbg("Successfully attached MMC/SD interrupts\n");
|
||||
|
||||
/* Register a callback so that we get informed if media is inserted or
|
||||
* removed from the slot.
|
||||
* removed from the slot (Initially all callbacks are disabled).
|
||||
*/
|
||||
|
||||
SDIO_REGISTERCALLBACK(priv->dev, mmcsd_mediachange, (FAR void *)priv);
|
||||
@ -1917,7 +1921,7 @@ static int mmcsd_hwinitialize(struct mmcsd_state_s *priv)
|
||||
{
|
||||
/* No... Setup to receive the media inserted event */
|
||||
|
||||
SDIO_EVENTENABLE(priv->dev, SDIOEVENT_INSERTED);
|
||||
SDIO_CALLBACKENABLE(priv->dev, SDIOMEDIA_INSERTED);
|
||||
|
||||
/* ENODEV is returned to indicate that no card is inserted in the slot. */
|
||||
|
||||
|
||||
@ -47,18 +47,21 @@
|
||||
* Pre-Processor Definitions
|
||||
****************************************************************************/
|
||||
|
||||
/* MMC/SD events needed by the driver */
|
||||
/* MMC/SD events needed by the driver
|
||||
*
|
||||
* Wait events are used for event-waiting by SDIO_WAITENABLE and SDIO_EVENTWAIT
|
||||
*/
|
||||
|
||||
#define SDIOEVENT_EJECTED (1 << 0) /* Bit 0: CD/DAT3 transition low, media removed */
|
||||
#define SDIOEVENT_INSERTED (1 << 1) /* Bit 1: CD/DAT3 transition high, media inserted */
|
||||
#define SDIOEVENT_CMDDONE (1 << 2) /* Bit 2: Command+response complete */
|
||||
#define SDIOEVENT_READCMDDONE (1 << 3) /* Bit 3: Read command done */
|
||||
#define SDIOEVENT_WRITECMDDONE (1 << 4) /* Bit 4: Write command done */
|
||||
#define SDIOEVENT_READDATADONE (1 << 5) /* Bit 5: Read data done */
|
||||
#define SDIOEVENT_WRITEDATADONE (1 << 6) /* Bit 6: Write data done */
|
||||
#define SDIOEVENT_CMDBUSYDONE (1 << 7) /* Bit 7: Command with transition to not busy */
|
||||
#define SDIOWAIT_CMDDONE (1 << 0) /* Bit 0: Command+response complete */
|
||||
#define SDIOWAIT_CMDBUSYDONE (1 << 1) /* Bit 1: Command with transition to not busy */
|
||||
#define SDIOWAIT_TRANSFERDONE (1 << 2) /* Bit 2: Data transfer/DMA done */
|
||||
|
||||
#define SDIOEVENT_ALLEVENTS 0xff
|
||||
#define SDIOWAIT_ALLEVENTS 0x03
|
||||
|
||||
/* Media events are used for enable/disable registered event callbacks */
|
||||
|
||||
#define SDIOMEDIA_EJECTED (1 << 0) /* Bit 0: Mmedia removed */
|
||||
#define SDIOMEDIA_INSERTED (1 << 1) /* Bit 1: Media inserted */
|
||||
|
||||
/* Commands are bit-encoded to provide as much information to the SDIO driver as
|
||||
* possible in 32-bits. The encoding is as follows:
|
||||
@ -517,14 +520,22 @@
|
||||
#define SDIO_RECVDATA(dev,buffer) ((dev)->recvdata(dev,buffer))
|
||||
|
||||
/****************************************************************************
|
||||
* Name: SDIO_EVENTENABLE
|
||||
* Name: SDIO_WAITENABLE
|
||||
*
|
||||
* Description:
|
||||
* Enable/disable notification of a set of MMC/SD events
|
||||
* Enable/disable of a set of MMC/SD wait events. This is part of the
|
||||
* the SDIO_WAITEVENT sequence. The set of to-be-waited-for events is
|
||||
* configured before calling SDIO_EVENTWAIT. This is done in this way
|
||||
* to help the driver to eliminate race conditions between the command
|
||||
* setup and the subsequent events.
|
||||
*
|
||||
* The enabled events persist until either (1) SDIO_WAITENABLE is called
|
||||
* again specifying a different set of wait events, or (2) SDIO_EVENTWAIT
|
||||
* returns.
|
||||
*
|
||||
* Input Parameters:
|
||||
* dev - An instance of the MMC/SD device interface
|
||||
* eventset - A bitset of events to enable or disable (see MMCSDEVENT_*
|
||||
* eventset - A bitset of events to enable or disable (see SDIOWAIT_*
|
||||
* definitions). 0=disable; 1=enable.
|
||||
*
|
||||
* Returned Value:
|
||||
@ -532,13 +543,16 @@
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#define SDIO_EVENTENABLE(dev,eventset) ((dev)->eventenable(dev,eventset))
|
||||
#define SDIO_WAITENABLE(dev,eventset) ((dev)->waitenable(dev,eventset))
|
||||
|
||||
/****************************************************************************
|
||||
* Name: SDIO_EVENTWAIT
|
||||
*
|
||||
* Description:
|
||||
* Wait for one of the enabled events to occur (or a timeout)
|
||||
* Wait for one of the enabled events to occur (or a timeout). Note that
|
||||
* all events enabled by SDIO_WAITEVENTS are disabled when SDIO_EVENTWAIT
|
||||
* returns. SDIO_WAITEVENTS must be called again before SDIO_EVENTWAIT
|
||||
* can be used again.
|
||||
*
|
||||
* Input Parameters:
|
||||
* dev - An instance of the MMC/SD device interface
|
||||
@ -571,6 +585,30 @@
|
||||
|
||||
#define SDIO_EVENTS(dev) ((dev)->events(dev))
|
||||
|
||||
/****************************************************************************
|
||||
* Name: SDIO_CALLBACKENABLE
|
||||
*
|
||||
* Description:
|
||||
* Enable/disable of a set of MMC/SD callback events. This is part of the
|
||||
* the SDIO callback sequence. The set of events is configured to enabled
|
||||
* callbacks to the function provided in SDIO_REGISTERCALLBACK.
|
||||
*
|
||||
* Events are automatically disabled once the callback is performed and no
|
||||
* further callback events will occur until they are again enabled by
|
||||
* calling this methos.
|
||||
*
|
||||
* Input Parameters:
|
||||
* dev - An instance of the MMC/SD device interface
|
||||
* eventset - A bitset of events to enable or disable (see SDIOMEDIA_*
|
||||
* definitions). 0=disable; 1=enable.
|
||||
*
|
||||
* Returned Value:
|
||||
* None
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#define SDIO_CALLBACKENABLE(dev,eventset) ((dev)->waitenable(dev,eventset))
|
||||
|
||||
/****************************************************************************
|
||||
* Name: SDIO_REGISTERCALLBACK
|
||||
*
|
||||
@ -580,6 +618,9 @@
|
||||
* interrupt level events should be handled by calling back on the work
|
||||
* thread.
|
||||
*
|
||||
* When this method is called, all callbacks should be disabled until they
|
||||
* are enabled via a call to SDIO_CALLBACKENABLE
|
||||
*
|
||||
* Input Parameters:
|
||||
* dev - Device-specific state data
|
||||
* callback - The funtion to call on the media change
|
||||
@ -612,43 +653,19 @@
|
||||
# define SDIO_DMASUPPORTED(dev) (FALSE)
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: SDIO_COHERENT
|
||||
*
|
||||
* Description:
|
||||
* If the processor supports a data cache, then this method will make sure
|
||||
* that the contents of the DMA memory and the data cache are coherent in
|
||||
* preparation for the DMA transfer. For write transfers, this may mean
|
||||
* flushing the data cache, for read transfers this may mean invalidating
|
||||
* the data cache.
|
||||
*
|
||||
* Input Parameters:
|
||||
* dev - An instance of the MMC/SD device interface
|
||||
* addr - The beginning address of the DMA
|
||||
* len - The length of the DMA
|
||||
* write - TRUE: A write DMA will be performed; FALSE: a read DMA will be
|
||||
* performed.
|
||||
*
|
||||
* Returned Value:
|
||||
* None
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#if defined(CONFIG_SDIO_DMA) && defined(CONFIG_DATA_CACHE)
|
||||
# define SDIO_COHERENT(dev,addr,len,write) ((dev)->coherent(dev,addr,len,write))
|
||||
#else
|
||||
# define SDIO_COHERENT(dev,addr,len,write)
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: SDIO_DMAREADSETUP
|
||||
*
|
||||
* Description:
|
||||
* Setup to perform a read DMA
|
||||
* Setup to perform a read DMA. If the processor supports a data cache,
|
||||
* then this method will also make sure that the contents of the DMA memory
|
||||
* and the data cache are coherent. For read transfers this may mean
|
||||
* invalidating the data cache.
|
||||
*
|
||||
* Input Parameters:
|
||||
* dev - An instance of the MMC/SD device interface
|
||||
* buffer - The memory to DMA from
|
||||
* buflen - The size of the DMA transfer in bytes
|
||||
*
|
||||
* Returned Value:
|
||||
* OK on success; a negated errno on failure
|
||||
@ -656,20 +673,24 @@
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_SDIO_DMA
|
||||
# define SDIO_DMAREADSETUP(dev,buffer) ((dev)->dmareadsetup(dev,buffer))
|
||||
# define SDIO_DMAREADSETUP(dev,buffer,len) ((dev)->dmareadsetup(dev,buffer,len))
|
||||
#else
|
||||
# define SDIO_DMAREADSETUP(dev,buffer) (-ENOSYS)
|
||||
# define SDIO_DMAREADSETUP(dev,buffer,len) (-ENOSYS)
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: SDIO_DMAWRITESETUP
|
||||
*
|
||||
* Description:
|
||||
* Setup to perform a write DMA
|
||||
* Setup to perform a write DMA. If the processor supports a data cache,
|
||||
* then this method will also make sure that the contents of the DMA memory
|
||||
* and the data cache are coherent. For write transfers, this may mean
|
||||
* flushing the data cache.
|
||||
*
|
||||
* Input Parameters:
|
||||
* dev - An instance of the MMC/SD device interface
|
||||
* buffer - The memory to DMA into
|
||||
* buflen - The size of the DMA transfer in bytes
|
||||
*
|
||||
* Returned Value:
|
||||
* OK on success; a negated errno on failure
|
||||
@ -677,9 +698,9 @@
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_SDIO_DMA
|
||||
# define SDIO_DMAWRITESETUP(dev,buffer) ((dev)->dmawritesetup(dev,buffer))
|
||||
# define SDIO_DMAWRITESETUP(dev,buffer,len) ((dev)->dmawritesetup(dev,buffer,len))
|
||||
#else
|
||||
# define SDIO_DMAWRITESETUP(dev,buffer) (-ENOSYS)
|
||||
# define SDIO_DMAWRITESETUP(dev,buffer,len) (-ENOSYS)
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
@ -702,31 +723,11 @@
|
||||
# define SDIO_DMASTART(dev) (-ENOSYS)
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: SDIO_DMASTOP
|
||||
*
|
||||
* Description:
|
||||
* Stop the DMA
|
||||
*
|
||||
* Input Parameters:
|
||||
* dev - An instance of the MMC/SD device interface
|
||||
*
|
||||
* Returned Value:
|
||||
* OK on success; a negated errno on failure
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_SDIO_DMA
|
||||
# define SDIO_DMASTOP(dev) ((dev)->dmastop(dev))
|
||||
#else
|
||||
# define SDIO_DMASTOP(dev) (-ENOSYS)
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: SDIO_DMASTATUS
|
||||
*
|
||||
* Description:
|
||||
* Returnt the number of bytes remaining in the DMA transfer
|
||||
* Return the number of bytes remaining in the DMA transfer
|
||||
*
|
||||
* Input Parameters:
|
||||
* dev - An instance of the MMC/SD device interface
|
||||
@ -810,7 +811,7 @@ struct sdio_dev_s
|
||||
|
||||
/* EVENT handler */
|
||||
|
||||
void (*eventenable)(FAR struct sdio_dev_s *dev, sdio_eventset_t eventset);
|
||||
void (*waitenable)(FAR struct sdio_dev_s *dev, sdio_eventset_t eventset);
|
||||
ubyte (*eventwait)(FAR struct sdio_dev_s *dev, uint32 timeout);
|
||||
ubyte (*events)(FAR struct sdio_dev_s *dev);
|
||||
int (*registercallback)(FAR struct sdio_dev_s *dev, sdio_mediachange_t callback, void *arg);
|
||||
@ -819,13 +820,11 @@ struct sdio_dev_s
|
||||
|
||||
#ifdef CONFIG_SDIO_DMA
|
||||
boolean (*dmasupported)(FAR struct sdio_dev_s *dev);
|
||||
#ifdef CONFIG_DATA_CACHE
|
||||
void (*coherent)(FAR struct sdio_dev_s *dev, FAR void *addr, size_t len, boolean write);
|
||||
#endif
|
||||
int (*dmareadsetup)(FAR struct sdio_dev_s *dev, FAR ubyte *buffer);
|
||||
int (*dmawritesetup)(FAR struct sdio_dev_s *dev, FAR const ubyte *buffer);
|
||||
int (*dmaenable)(FAR struct sdio_dev_s *dev);
|
||||
int (*dmastop)(FAR struct sdio_dev_s *dev);
|
||||
int (*dmareadsetup)(FAR struct sdio_dev_s *dev, FAR ubyte *buffer,
|
||||
size_t buflen);
|
||||
int (*dmawritesetup)(FAR struct sdio_dev_s *dev, FAR const ubyte *buffer,
|
||||
size_t buflen);
|
||||
int (*dmastart)(FAR struct sdio_dev_s *dev);
|
||||
int (*dmastatus)(FAR struct sdio_dev_s *dev, size_t *remaining);
|
||||
#endif
|
||||
};
|
||||
|
||||
Loading…
Reference in New Issue
Block a user