From 2f4dba80ea1d68a1165ca04a6b4d1ccd5853c27d Mon Sep 17 00:00:00 2001 From: gdisirio Date: Tue, 26 Apr 2011 16:59:14 +0000 Subject: git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@2903 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- os/hal/include/sdc.h | 94 ++++++++++++++++++ os/hal/platforms/STM32/sdc_lld.c | 167 +++++++++++++++++++++++++++++++ os/hal/platforms/STM32/sdc_lld.h | 152 ++++++++++++++++++++++++++++ os/hal/src/sdc.c | 207 +++++++++++++++++++++++++++++++++++++++ 4 files changed, 620 insertions(+) create mode 100644 os/hal/include/sdc.h create mode 100644 os/hal/platforms/STM32/sdc_lld.c create mode 100644 os/hal/platforms/STM32/sdc_lld.h create mode 100644 os/hal/src/sdc.c (limited to 'os') diff --git a/os/hal/include/sdc.h b/os/hal/include/sdc.h new file mode 100644 index 000000000..d578e65b4 --- /dev/null +++ b/os/hal/include/sdc.h @@ -0,0 +1,94 @@ +/* + ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010, + 2011 Giovanni Di Sirio. + + This file is part of ChibiOS/RT. + + ChibiOS/RT is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + ChibiOS/RT is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ + +/** + * @file sdc.h + * @brief SDC Driver macros and structures. + * + * @addtogroup SDC + * @{ + */ + +#ifndef _SDC_H_ +#define _SDC_H_ + +#if HAL_USE_SDC || defined(__DOXYGEN__) + +/*===========================================================================*/ +/* Driver constants. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver pre-compile time settings. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Derived constants and error checks. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver data structures and types. */ +/*===========================================================================*/ + +/** + * @brief Driver state machine possible states. + */ +typedef enum { + SDC_UNINIT = 0, /**< Not initialized. */ + SDC_STOP = 1, /**< Stopped. */ + SDC_READY = 2, /**< Ready. */ + SDC_INITNG = 3, /**< Card initialization in progress. */ + SDC_ACTIVE = 4, /**< Cart initialized. */ + SDC_READING = 5, /**< Read operation in progress. */ + SDC_WRITING = 6, /**< Write operation in progress. */ +} sdcstate_t; + +#include "sdc_lld.h" + +/*===========================================================================*/ +/* Driver macros. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* External declarations. */ +/*===========================================================================*/ + +#ifdef __cplusplus +extern "C" { +#endif + void sdcInit(void); + void sdcObjectInit(SDCDriver *sdcp); + void sdcStart(SDCDriver *sdcp, const SDCConfig *config); + void sdcStop(SDCDriver *sdcp); + bool_t sdcConnect(SDCDriver *sdcp); + bool_t sdcDisconnect(SDCDriver *sdcp); + bool_t sdcRead(SDCDriver *sdcp, uint32_t startblk, + uint8_t *buffer, uint32_t n); + bool_t sdcWrite(SDCDriver *sdcp, uint32_t startblk, + const uint8_t *buffer, uint32_t n); +#ifdef __cplusplus +} +#endif + +#endif /* HAL_USE_SDC */ + +#endif /* _SDC_H_ */ + +/** @} */ diff --git a/os/hal/platforms/STM32/sdc_lld.c b/os/hal/platforms/STM32/sdc_lld.c new file mode 100644 index 000000000..48f8561f9 --- /dev/null +++ b/os/hal/platforms/STM32/sdc_lld.c @@ -0,0 +1,167 @@ +/* + ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010, + 2011 Giovanni Di Sirio. + + This file is part of ChibiOS/RT. + + ChibiOS/RT is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + ChibiOS/RT is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ + +/** + * @file STM32/sdc_lld.c + * @brief STM32 SDC subsystem low level driver source. + * + * @addtogroup SDC + * @{ + */ + +#include "ch.h" +#include "hal.h" + +#if HAL_USE_SDC || defined(__DOXYGEN__) + +/*===========================================================================*/ +/* Driver exported variables. */ +/*===========================================================================*/ + +/** @brief SDCD1 driver identifier.*/ +SDCDriver SDCD1; + +/*===========================================================================*/ +/* Driver local variables. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver local functions. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver interrupt handlers. */ +/*===========================================================================*/ + +/** + * @brief SDIO IRQ handler. + * + * @isr + */ +CH_IRQ_HANDLER(SDIO_IRQHandler) { + + CH_IRQ_PROLOGUE(); + + + CH_IRQ_EPILOGUE(); +} + +/*===========================================================================*/ +/* Driver exported functions. */ +/*===========================================================================*/ + +/** + * @brief Low level SDC driver initialization. + * + * @notapi + */ +void sdc_lld_init(void) { + + sdcObjectInit(&SDCD1); +} + +/** + * @brief Configures and activates the SDC peripheral. + * + * @param[in] sdcp pointer to the @p SDCDriver object + * + * @notapi + */ +void sdc_lld_start(SDCDriver *sdcp) { + + if (sdcp->state == SDC_STOP) { + /* Note, the DMA must be enabled before the IRQs.*/ + dmaAllocate(STM32_DMA2_ID, STM32_DMA_CHANNEL_4, NULL, NULL); + NVICEnableVector(SDIO_IRQn, + CORTEX_PRIORITY_MASK(STM32_SDC_SDIO_IRQ_PRIORITY)); + RCC->AHBENR |= RCC_AHBENR_SDIOEN; + } + /* Configuration, card clock is initially stopped.*/ + SDIO->POWER = 0; + SDIO->CLKCR = 0; + SDIO->DCTRL = 0; +} + +/** + * @brief Deactivates the SDC peripheral. + * + * @param[in] sdcp pointer to the @p SDCDriver object + * + * @notapi + */ +void sdc_lld_stop(SDCDriver *sdcp) { + + if ((sdcp->state == SDC_READY) || (sdcp->state == SDC_ACTIVE)) { + SDIO->POWER = 0; + SDIO->CLKCR = 0; + SDIO->DCTRL = 0; + + /* Clock deactivation.*/ + NVICDisableVector(SDIO_IRQn); + dmaRelease(STM32_DMA2_ID, STM32_DMA_CHANNEL_4); + } +} + +/** + * @brief Sends an SDIO command with no response expected. + * + * @param[in] sdcp pointer to the @p SDCDriver object + * + * @notapi + */ +void sdc_lld_send_cmd_none(SDCDriver *sdcp, uint8_t cmd, uint32_t arg) { + +} + +/** + * @brief Sends an SDIO command with a short response expected. + * + * @param[in] sdcp pointer to the @p SDCDriver object + * @return The operation status. + * @retval FALSE the operation succeeded. + * @retval TRUE the operation failed because timeout, CRC check or + * other errors. + * + * @notapi + */ +bool_t sdc_lld_send_cmd_short(SDCDriver *sdcp, uint8_t cmd, uint32_t arg, + uint32_t *resp) { + +} + +/** + * @brief Sends an SDIO command with a long response expected. + * + * @param[in] sdcp pointer to the @p SDCDriver object + * @return The operation status. + * @retval FALSE the operation succeeded. + * @retval TRUE the operation failed because timeout, CRC check or + * other errors. + * + * @notapi + */ +bool_t sdc_lld_send_cmd_long(SDCDriver *sdcp, uint8_t cmd, uint32_t arg, + uint32_t *resp) { + +} + +#endif /* HAL_USE_SDC */ + +/** @} */ diff --git a/os/hal/platforms/STM32/sdc_lld.h b/os/hal/platforms/STM32/sdc_lld.h new file mode 100644 index 000000000..012fdb1c7 --- /dev/null +++ b/os/hal/platforms/STM32/sdc_lld.h @@ -0,0 +1,152 @@ +/* + ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010, + 2011 Giovanni Di Sirio. + + This file is part of ChibiOS/RT. + + ChibiOS/RT is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + ChibiOS/RT is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ + +/** + * @file STM32/sdc_lld.h + * @brief STM32 SDC subsystem low level driver header. + * + * @addtogroup SDC + * @{ + */ + +#ifndef _SDC_LLD_H_ +#define _SDC_LLD_H_ + +#if HAL_USE_SDC || defined(__DOXYGEN__) + +/*===========================================================================*/ +/* Driver constants. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver pre-compile time settings. */ +/*===========================================================================*/ + +/** + * @brief SDIO DMA priority (0..3|lowest..highest). + */ +#if !defined(STM32_SDC_SDIO_DMA_PRIORITY) || defined(__DOXYGEN__) +#define STM32_SDC_SDIO_DMA_PRIORITY 2 +#endif + +/** + * @brief SDIO interrupt priority level setting. + */ +#if !defined(STM32_SDC_SDIO_IRQ_PRIORITY) || defined(__DOXYGEN__) +#define STM32_SDC_SDIO_IRQ_PRIORITY 9 +#endif + +/** + * @brief SDIO DMA error hook. + * @note The default action for DMA errors is a system halt because DMA + * error can only happen because programming errors. + */ +#if !defined(STM32_SDC_DMA_ERROR_HOOK) || defined(__DOXYGEN__) +#define STM32_SDC_DMA_ERROR_HOOK(sdcp) chSysHalt() +#endif + +/*===========================================================================*/ +/* Derived constants and error checks. */ +/*===========================================================================*/ + +#if !STM32_HAS_SDIO +#error "SDIO not present in the selected device" +#endif + +#if !defined(STM32_DMA_REQUIRED) +#define STM32_DMA_REQUIRED +#endif + +/* + * SDIO clock divider. + */ +#if STM32_HCLK > 48000000 +#define STM32_SDIO_DIV_HS 0x01 +#define STM32_SDIO_DIV_LS 0xB2 +#else +#define STM32_SDIO_DIV_HS 0x00 +#define STM32_SDIO_DIV_LS 0x76 +#endif + +/*===========================================================================*/ +/* Driver data structures and types. */ +/*===========================================================================*/ + + +/** + * @brief Type of a structure representing an SDC driver. + */ +typedef struct SDCDriver SDCDriver; + +/** + * @brief Driver configuration structure. + * @note It could be empty on some architectures. + */ +typedef struct { + +} SDCConfig; + +/** + * @brief Structure representing an SDC driver. + */ +struct SDCDriver { + /** + * @brief Driver state. + */ + sdcstate_t state; + /** + * @brief Current configuration data. + */ + const SDCConfig *config; + /* End of the mandatory fields.*/ +}; + +/*===========================================================================*/ +/* Driver macros. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* External declarations. */ +/*===========================================================================*/ + +#if !defined(__DOXYGEN__) +extern SDCDriver SDCD1; +#endif + +#ifdef __cplusplus +extern "C" { +#endif + void sdc_lld_init(void); + void sdc_lld_start(SDCDriver *sdcp); + void sdc_lld_stop(SDCDriver *sdcp); + void sdc_lld_send_cmd_none(SDCDriver *sdcp, uint8_t cmd, uint32_t arg); + bool_t sdc_lld_send_cmd_short(SDCDriver *sdcp, uint8_t cmd, uint32_t arg, + uint32_t *resp); + bool_t sdc_lld_send_cmd_long(SDCDriver *sdcp, uint8_t cmd, uint32_t arg, + uint32_t *resp); +#ifdef __cplusplus +} +#endif + +#endif /* HAL_USE_SDC */ + +#endif /* _SDC_LLD_H_ */ + +/** @} */ diff --git a/os/hal/src/sdc.c b/os/hal/src/sdc.c new file mode 100644 index 000000000..33f2b3612 --- /dev/null +++ b/os/hal/src/sdc.c @@ -0,0 +1,207 @@ +/* + ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010, + 2011 Giovanni Di Sirio. + + This file is part of ChibiOS/RT. + + ChibiOS/RT is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + ChibiOS/RT is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ + +/** + * @file sdc.c + * @brief SDC Driver code. + * + * @addtogroup SDC + * @{ + */ + +#include "ch.h" +#include "hal.h" + +#if HAL_USE_SDC || defined(__DOXYGEN__) + +/*===========================================================================*/ +/* Driver exported variables. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver local variables. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver local functions. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver exported functions. */ +/*===========================================================================*/ + +/** + * @brief SDC Driver initialization. + * @note This function is implicitly invoked by @p halInit(), there is + * no need to explicitly initialize the driver. + * + * @init + */ +void sdcInit(void) { + + sdc_lld_init(); +} + +/** + * @brief Initializes the standard part of a @p SDCDriver structure. + * + * @param[out] sdcp pointer to the @p SDCDriver object + * + * @init + */ +void sdcObjectInit(SDCDriver *sdcp) { + + sdcp->state = SDC_STOP; + sdcp->config = NULL; +} + +/** + * @brief Configures and activates the SDC peripheral. + * + * @param[in] sdcp pointer to the @p SDCDriver object + * @param[in] config pointer to the @p SDCConfig object + * + * @api + */ +void sdcStart(SDCDriver *sdcp, const SDCConfig *config) { + + chDbgCheck((sdcp != NULL) && (config != NULL), "sdcStart"); + + chSysLock(); + chDbgAssert((sdcp->state == SDC_STOP) || (sdcp->state == SDC_READY), + "sdcStart(), #1", "invalid state"); + sdcp->config = config; + sdc_lld_start(sdcp); + sdcp->state = SDC_READY; + chSysUnlock(); +} + +/** + * @brief Deactivates the SDC peripheral. + * + * @param[in] sdcp pointer to the @p SDCDriver object + * + * @api + */ +void sdcStop(SDCDriver *sdcp) { + + chDbgCheck(sdcp != NULL, "sdcStop"); + + chSysLock(); + chDbgAssert((sdcp->state == SDC_STOP) || (sdcp->state == SDC_READY), + "sdcStop(), #1", "invalid state"); + sdc_lld_stop(sdcp); + sdcp->state = SDC_STOP; + chSysUnlock(); +} + +/** + * @brief Performs the initialization procedure on the inserted card. + * @details This function should be invoked when a card is inserted and + * brings the driver in the @p SDC_ACTIVE state where it is possible + * to perform read and write operations. + * + * @param[in] sdcp pointer to the @p SDCDriver object + * @return The operation status. + * @retval FALSE operation succeeded, the driver is now + * in the @p SDC_ACTIVE state. + * @retval TRUE operation failed. + * + * @api + */ +bool_t sdcConnect(SDCDriver *sdcp) { + + chDbgCheck(sdcp != NULL, "sdcConnect"); + + chSysLock(); + chDbgAssert(sdcp->state == SDC_READY, "mmcConnect(), #1", "invalid state"); + sdcp->state = SDC_INITNG; + chSysUnlock(); + + sdcp->state = SDC_ACTIVE; + return FALSE; +} + +/** + * @brief Brings the driver in a state safe for card removal. + * + * @param[in] sdcp pointer to the @p SDCDriver object + * @return The operation status. + * @retval FALSE the operation succeeded and the driver is now + * in the @p SDC_READY state. + * @retval TRUE the operation failed. + * + * @api + */ +bool_t sdcDisconnect(SDCDriver *sdcp) { + + chDbgCheck(sdcp != NULL, "sdcConnect"); + + chSysLock(); + chDbgAssert(sdcp->state == SDC_ACTIVE, + "sdcDisconnect(), #1", "invalid state"); + sdcp->state = SDC_READY; + chSysUnlock(); + return FALSE; +} + +/** + * @brief Reads one or more blocks. + * @pre The driver must be in the @p SDC_ACTIVE state after a successful + * sdcConnect() invocation. + * + * @param[in] sdcp pointer to the @p SDCDriver object + * @param[in] startblk first block to read + * @param[out] buffer pointer to the read buffer + * @return The operation status. + * @retval FALSE operation succeeded, the requested blocks have been + * read. + * @retval TRUE operation failed, the state of the buffer is uncertain. + * + * @api + */ +bool_t sdcRead(SDCDriver *sdcp, uint32_t startblk, + uint8_t *buffer, uint32_t n) { + +} + +/** + * @brief Writes one or more blocks. + * @pre The driver must be in the @p SDC_ACTIVE state after a successful + * sdcConnect() invocation. + * + * @param[in] sdcp pointer to the @p SDCDriver object + * @param[in] startblk first block to write + * @param[out] buffer pointer to the write buffer + * @return The operation status. + * @retval FALSE operation succeeded, the requested blocks have been + * written. + * @retval TRUE operation failed. + * + * @api + */ +bool_t sdcWrite(SDCDriver *sdcp, uint32_t startblk, + const uint8_t *buffer, uint32_t n) { + +} + +#endif /* HAL_USE_SDC */ + +/** @} */ -- cgit v1.2.3