diff options
Diffstat (limited to 'os/hal/platforms/STM32/sdc_lld.h')
-rw-r--r-- | os/hal/platforms/STM32/sdc_lld.h | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/os/hal/platforms/STM32/sdc_lld.h b/os/hal/platforms/STM32/sdc_lld.h new file mode 100644 index 000000000..f670e6bbe --- /dev/null +++ b/os/hal/platforms/STM32/sdc_lld.h @@ -0,0 +1,208 @@ +/*
+ 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 <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @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. */
+/*===========================================================================*/
+
+/**
+ * @name Configuration options
+ * @{
+ */
+/**
+ * @brief SDIO data timeout in SDIO clock cycles.
+ */
+#if !defined(STM32_SDC_DATATIMEOUT) || defined(__DOXYGEN__)
+#define STM32_SDC_DATATIMEOUT 0x000FFFFF
+#endif
+
+/**
+ * @brief SDIO DMA priority (0..3|lowest..highest).
+ */
+#if !defined(STM32_SDC_SDIO_DMA_PRIORITY) || defined(__DOXYGEN__)
+#define STM32_SDC_SDIO_DMA_PRIORITY 3
+#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 support for unaligned transfers.
+ */
+#if !defined(STM32_SDC_UNALIGNED_SUPPORT) || defined(__DOXYGEN__)
+#define STM32_SDC_UNALIGNED_SUPPORT TRUE
+#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 SDIO bus mode.
+ */
+typedef enum {
+ SDC_MODE_1BIT = 0,
+ SDC_MODE_4BIT,
+ SDC_MODE_8BIT
+} sdcbusmode_t;
+
+/**
+ * @brief Type of card flags.
+ */
+typedef uint32_t sdcmode_t;
+
+/**
+ * @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 {
+ uint32_t dummy;
+} SDCConfig;
+
+/**
+ * @brief Structure representing an SDC driver.
+ */
+struct SDCDriver {
+ /**
+ * @brief Driver state.
+ */
+ sdcstate_t state;
+ /**
+ * @brief Current configuration data.
+ */
+ const SDCConfig *config;
+ /**
+ * @brief Various flags regarding the mounted card.
+ */
+ sdcmode_t cardmode;
+ /**
+ * @brief Card CID.
+ */
+ uint32_t cid[4];
+ /**
+ * @brief Card CSD.
+ */
+ uint32_t csd[4];
+ /**
+ * @brief Card RCA.
+ */
+ uint32_t rca;
+ /* End of the mandatory fields.*/
+ /**
+ * @brief Thread waiting for I/O completion IRQ.
+ */
+ Thread *thread;
+};
+
+/*===========================================================================*/
+/* 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_start_clk(SDCDriver *sdcp);
+ void sdc_lld_set_data_clk(SDCDriver *sdcp);
+ void sdc_lld_stop_clk(SDCDriver *sdcp);
+ void sdc_lld_set_bus_mode(SDCDriver *sdcp, sdcbusmode_t mode);
+ 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_short_crc(SDCDriver *sdcp, uint8_t cmd, uint32_t arg,
+ uint32_t *resp);
+ bool_t sdc_lld_send_cmd_long_crc(SDCDriver *sdcp, uint8_t cmd, uint32_t arg,
+ uint32_t *resp);
+ bool_t sdc_lld_read(SDCDriver *sdcp, uint32_t startblk,
+ uint8_t *buf, uint32_t n);
+ bool_t sdc_lld_write(SDCDriver *sdcp, uint32_t startblk,
+ const uint8_t *buf, uint32_t n);
+ bool_t sdc_lld_is_card_inserted(SDCDriver *sdcp);
+ bool_t sdc_lld_is_write_protected(SDCDriver *sdcp);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HAL_USE_SDC */
+
+#endif /* _SDC_LLD_H_ */
+
+/** @} */
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