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rt-thread/bsp/nuvoton/libraries/m2354/rtt_port/drv_sdh.c

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/**************************************************************************//**
*
* @copyright (C) 2020 Nuvoton Technology Corp. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-7-7 Wayne First version
*
******************************************************************************/
#include <rtconfig.h>
#if defined(BSP_USING_SDH)
#include <rtdevice.h>
#include "NuMicro.h"
#include <drv_pdma.h>
#include <string.h>
#if defined(RT_USING_DFS)
#include <dfs_fs.h>
#include <dfs_posix.h>
#endif
/* Private define ---------------------------------------------------------------*/
#if defined(NU_SDH_MOUNT_ON_ROOT)
#ifndef NU_SDH_MOUNTPOINT_SDH0
#define NU_SDH_MOUNTPOINT_SDH0 "/"
#endif
#else
#if !defined(NU_SDH_MOUNTPOINT_ROOT)
#define NU_SDH_MOUNTPOINT_ROOT "/mnt"
#endif
#endif
#if !defined(NU_SDH_MOUNTPOINT_SDH0)
#define NU_SDH_MOUNTPOINT_SDH0 NU_SDH_MOUNTPOINT_ROOT"/sd0"
#endif
#if defined(NU_SDH_USING_PDMA)
#define NU_SDH_MEMCPY nu_pdma_memcpy
#else
#define NU_SDH_MEMCPY memcpy
#endif
enum
{
SDH_START = -1,
#if defined(BSP_USING_SDH0)
SDH0_IDX,
#endif
SDH_CNT
};
#define SDH_BLOCK_SIZE 512ul
#if defined(NU_SDH_HOTPLUG)
#define NU_SDH_TID_STACK_SIZE 1024
#endif
#if defined(NU_SDH_HOTPLUG)
enum
{
NU_SDH_CARD_DETECTED_SD0 = (1 << 0),
NU_SDH_CARD_EVENT_ALL = (NU_SDH_CARD_DETECTED_SD0)
};
#endif
/* Private typedef --------------------------------------------------------------*/
struct nu_sdh
{
struct rt_device dev;
char *name;
#if defined(NU_SDH_HOTPLUG)
char *mounted_point;
#endif
SDH_T *base;
uint32_t is_card_inserted;
SDH_INFO_T *info;
struct rt_semaphore lock;
uint8_t *pbuf;
};
typedef struct nu_sdh *nu_sdh_t;
#if defined(NU_SDH_HOTPLUG)
static struct rt_thread sdh_tid;
static rt_uint8_t sdh_stack[NU_SDH_TID_STACK_SIZE];
#endif
/* Private functions ------------------------------------------------------------*/
static void nu_sdh_isr(nu_sdh_t sdh);
static rt_err_t nu_sdh_init(rt_device_t dev);
static rt_err_t nu_sdh_open(rt_device_t dev, rt_uint16_t oflag);
static rt_err_t nu_sdh_close(rt_device_t dev);
static rt_size_t nu_sdh_read(rt_device_t dev, rt_off_t pos, void *buffer, rt_size_t blk_nb);
static rt_err_t nu_sdh_control(rt_device_t dev, int cmd, void *args);
static int rt_hw_sdh_init(void);
#if defined(NU_SDH_HOTPLUG)
static rt_bool_t nu_sdh_hotplug_is_mounted(const char *mounting_path);
static void sdh_hotplugger(void *param);
static rt_err_t nu_sdh_hotplug_mount(nu_sdh_t sdh);
static rt_err_t nu_sdh_hotplug_unmount(nu_sdh_t sdh);
#endif
/* Public functions -------------------------------------------------------------*/
/* Private variables ------------------------------------------------------------*/
static struct nu_sdh nu_sdh_arr [] =
{
#if defined(BSP_USING_SDH0)
{
.name = "sdh0",
#if defined(NU_SDH_HOTPLUG)
.mounted_point = NU_SDH_MOUNTPOINT_SDH0,
#endif
.base = SDH0,
.info = &SD0,
},
#endif
{0}
}; /* struct nu_sdh nu_sdh_arr [] */
static struct rt_event sdh_event;
static void nu_sdh_isr(nu_sdh_t sdh)
{
SDH_T *sdh_base = sdh->base;
unsigned int volatile isr;
unsigned int volatile ier;
// FMI data abort interrupt
if (sdh_base->GINTSTS & SDH_GINTSTS_DTAIF_Msk)
{
/* ResetAllEngine() */
sdh_base->GCTL |= SDH_GCTL_GCTLRST_Msk;
}
//----- SD interrupt status
isr = sdh_base->INTSTS;
if (isr & SDH_INTSTS_BLKDIF_Msk)
{
// block down
g_u8SDDataReadyFlag = TRUE;
SDH_CLR_INT_FLAG(sdh_base, SDH_INTSTS_BLKDIF_Msk);
}
if (isr & SDH_INTSTS_CDIF_Msk) // card detect
{
#if defined(NU_SDH_HOTPLUG)
if (sdh->base == SDH0)
rt_event_send(&sdh_event, NU_SDH_CARD_DETECTED_SD0);
#endif
/* Clear CDIF interrupt flag */
SDH_CLR_INT_FLAG(sdh_base, SDH_INTSTS_CDIF_Msk);
}
// CRC error interrupt
if (isr & SDH_INTSTS_CRCIF_Msk)
{
if (!(isr & SDH_INTSTS_CRC16_Msk))
{
/* CRC_16 error */
// TODO: handle CRC 16 error
}
else if (!(isr & SDH_INTSTS_CRC7_Msk))
{
if (!g_u8R3Flag)
{
/* CRC_7 error */
// TODO: handle CRC 7 error
}
}
/* Clear CRCIF interrupt flag */
SDH_CLR_INT_FLAG(sdh_base, SDH_INTSTS_CRCIF_Msk);
}
/* Data-in timeout */
if (isr & SDH_INTSTS_DITOIF_Msk)
{
sdh_base->INTSTS |= SDH_INTSTS_DITOIF_Msk;
}
/* Response-in timeout interrupt */
if (isr & SDH_INTSTS_RTOIF_Msk)
{
sdh_base->INTSTS |= SDH_INTSTS_RTOIF_Msk;
}
}
#if defined(BSP_USING_SDH0)
void SDH0_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
nu_sdh_isr(&nu_sdh_arr[SDH0_IDX]);
/* leave interrupt */
rt_interrupt_leave();
}
#endif
/* RT-Thread Device Driver Interface */
static rt_err_t nu_sdh_init(rt_device_t dev)
{
return RT_EOK;
}
static rt_err_t nu_sdh_open(rt_device_t dev, rt_uint16_t oflag)
{
nu_sdh_t sdh = (nu_sdh_t)dev;
RT_ASSERT(dev != RT_NULL);
return (SDH_Probe(sdh->base) == 0) ? RT_EOK : -(RT_ERROR);
}
static rt_err_t nu_sdh_close(rt_device_t dev)
{
return RT_EOK;
}
static rt_size_t nu_sdh_read(rt_device_t dev, rt_off_t pos, void *buffer, rt_size_t blk_nb)
{
rt_uint32_t ret = 0;
nu_sdh_t sdh = (nu_sdh_t)dev;
RT_ASSERT(dev != RT_NULL);
RT_ASSERT(buffer != RT_NULL);
rt_sem_take(&sdh->lock, RT_WAITING_FOREVER);
/* Check alignment. */
if (((uint32_t)buffer & 0x03) != 0)
{
/* Non-aligned. */
uint32_t i;
uint8_t *copy_buffer = (uint8_t *)buffer;
sdh->pbuf = rt_malloc(SDH_BLOCK_SIZE);
if (sdh->pbuf == RT_NULL)
goto exit_nu_sdh_read;
for (i = 0; i < blk_nb; i++)
{
/* Read to temp buffer from specified sector. */
ret = SDH_Read(sdh->base, &sdh->pbuf[0], pos, 1);
if (ret != Successful)
goto exit_nu_sdh_read;
/* Move to user's buffer */
NU_SDH_MEMCPY((void *)copy_buffer, (void *)&sdh->pbuf[0], SDH_BLOCK_SIZE);
pos ++;
copy_buffer += SDH_BLOCK_SIZE;
}
}
else
{
/* Read to user's buffer from specified sector. */
ret = SDH_Read(sdh->base, (uint8_t *)buffer, pos, blk_nb);
}
exit_nu_sdh_read:
if (sdh->pbuf)
{
rt_free(sdh->pbuf);
sdh->pbuf = RT_NULL;
}
rt_sem_release(&sdh->lock);
if (ret == Successful)
return blk_nb;
rt_kprintf("Read failed: %d, buffer 0x%08x\n", ret, buffer);
rt_set_errno(-RT_ENOSYS);
return 0;
}
static rt_size_t nu_sdh_write(rt_device_t dev, rt_off_t pos, const void *buffer, rt_size_t blk_nb)
{
rt_uint32_t ret = 0;
nu_sdh_t sdh = (nu_sdh_t)dev;
RT_ASSERT(dev != RT_NULL);
RT_ASSERT(buffer != RT_NULL);
rt_sem_take(&sdh->lock, RT_WAITING_FOREVER);
/* Check alignment. */
if (((uint32_t)buffer & 0x03) != 0)
{
/* Non-aligned. */
uint32_t i;
uint8_t *copy_buffer = (uint8_t *)buffer;
sdh->pbuf = rt_malloc(SDH_BLOCK_SIZE);
if (sdh->pbuf == RT_NULL)
goto exit_nu_sdh_write;
for (i = 0; i < blk_nb; i++)
{
NU_SDH_MEMCPY((void *)&sdh->pbuf[0], copy_buffer, SDH_BLOCK_SIZE);
ret = SDH_Write(sdh->base, (uint8_t *)&sdh->pbuf[0], pos, 1);
if (ret != Successful)
goto exit_nu_sdh_write;
pos++;
copy_buffer += SDH_BLOCK_SIZE;
}
}
else
{
/* Write to device directly. */
ret = SDH_Write(sdh->base, (uint8_t *)buffer, pos, blk_nb);
}
exit_nu_sdh_write:
if (sdh->pbuf)
{
rt_free(sdh->pbuf);
sdh->pbuf = RT_NULL;
}
rt_sem_release(&sdh->lock);
if (ret == Successful) return blk_nb;
rt_kprintf("write failed: %d, buffer 0x%08x\n", ret, buffer);
rt_set_errno(-RT_ENOSYS);
return 0;
}
static rt_err_t nu_sdh_control(rt_device_t dev, int cmd, void *args)
{
nu_sdh_t sdh = (nu_sdh_t)dev;
RT_ASSERT(dev != RT_NULL);
if (cmd == RT_DEVICE_CTRL_BLK_GETGEOME)
{
SDH_INFO_T *sdh_info = sdh->info;
struct rt_device_blk_geometry *geometry;
geometry = (struct rt_device_blk_geometry *)args;
if (geometry == RT_NULL) return -RT_ERROR;
geometry->bytes_per_sector = sdh_info->sectorSize;
geometry->block_size = sdh_info->sectorSize;
geometry->sector_count = sdh_info->totalSectorN;
}
return RT_EOK;
}
static int rt_hw_sdh_init(void)
{
int i;
rt_err_t ret = RT_EOK;
rt_uint32_t flags = RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_REMOVABLE | RT_DEVICE_FLAG_STANDALONE;
rt_event_init(&sdh_event, "sdh_event", RT_IPC_FLAG_FIFO);
for (i = (SDH_START + 1); i < SDH_CNT; i++)
{
/* Register sdcard device */
nu_sdh_arr[i].dev.type = RT_Device_Class_Block;
nu_sdh_arr[i].dev.init = nu_sdh_init;
nu_sdh_arr[i].dev.open = nu_sdh_open;
nu_sdh_arr[i].dev.close = nu_sdh_close;
nu_sdh_arr[i].dev.read = nu_sdh_read;
nu_sdh_arr[i].dev.write = nu_sdh_write;
nu_sdh_arr[i].dev.control = nu_sdh_control;
/* Private */
nu_sdh_arr[i].dev.user_data = (void *)&nu_sdh_arr[i];
rt_sem_init(&nu_sdh_arr[i].lock, "sdhlock", 1, RT_IPC_FLAG_FIFO);
SDH_Open(nu_sdh_arr[i].base, CardDetect_From_GPIO);
/* Enable NVIC IRQ */
if (nu_sdh_arr[i].base == SDH0)
NVIC_EnableIRQ(SDH0_IRQn);
nu_sdh_arr[i].pbuf = RT_NULL;
ret = rt_device_register(&nu_sdh_arr[i].dev, nu_sdh_arr[i].name, flags);
RT_ASSERT(ret == RT_EOK);
}
return (int)ret;
}
INIT_BOARD_EXPORT(rt_hw_sdh_init);
#if defined(NU_SDH_HOTPLUG)
static rt_bool_t nu_sdh_hotplug_is_mounted(const char *mounting_path)
{
rt_bool_t ret = RT_FALSE;
#if defined(RT_USING_DFS)
struct dfs_filesystem *psFS = dfs_filesystem_lookup(mounting_path);
if (psFS == RT_NULL)
{
goto exit_nu_sdh_hotplug_is_mounted;
}
else if (!rt_memcmp(psFS->path, mounting_path, rt_strlen(mounting_path)))
{
ret = RT_TRUE;
}
else
{
ret = RT_FALSE;
}
#endif
exit_nu_sdh_hotplug_is_mounted:
return ret;
}
static rt_err_t nu_sdh_hotplug_mount(nu_sdh_t sdh)
{
rt_err_t ret = RT_ERROR;
DIR *t;
#if defined(RT_USING_DFS)
if (nu_sdh_hotplug_is_mounted(sdh->mounted_point) == RT_TRUE)
{
ret = RT_EOK;
goto exit_nu_sdh_hotplug_mount;
}
/* Check the SD folder path is valid. */
if ((t = opendir(sdh->mounted_point)) != RT_NULL)
{
closedir(t);
}
#if !defined(NU_SDH_MOUNT_ON_ROOT)
else
{
/* Check the ROOT path is valid. */
if ((t = opendir(NU_SDH_MOUNTPOINT_ROOT)) != RT_NULL)
{
closedir(t);
}
else if ((ret = mkdir(NU_SDH_MOUNTPOINT_ROOT, 0)) != RT_EOK)
{
rt_kprintf("Failed to mkdir %s\n", NU_SDH_MOUNTPOINT_ROOT);
goto exit_nu_sdh_hotplug_mount;
}
if ((ret = mkdir(sdh->mounted_point, 0)) != RT_EOK)
{
rt_kprintf("Failed to mkdir %s\n", sdh->mounted_point);
goto exit_nu_sdh_hotplug_mount;
}
} //else
#endif
if ((ret = dfs_mount(sdh->name, sdh->mounted_point, "elm", 0, 0)) == 0)
{
rt_kprintf("Mounted %s on %s\n", sdh->name, sdh->mounted_point);
}
else
{
rt_kprintf("Failed to mount %s on %s\n", sdh->name, sdh->mounted_point);
ret = RT_ERROR;
}
exit_nu_sdh_hotplug_mount:
#endif
return -(ret);
}
static rt_err_t nu_sdh_hotplug_unmount(nu_sdh_t sdh)
{
rt_err_t ret = RT_ERROR;
#if defined(RT_USING_DFS)
if (nu_sdh_hotplug_is_mounted(sdh->mounted_point) == RT_FALSE)
{
ret = RT_EOK;
goto exit_nu_sdh_hotplug_unmount;
}
ret = dfs_unmount(sdh->mounted_point);
if (ret != RT_EOK)
{
rt_kprintf("Failed to unmount %s.\n", sdh->mounted_point);
}
else
{
rt_kprintf("Succeed to unmount %s.\n", sdh->mounted_point);
ret = RT_EOK;
}
#endif
exit_nu_sdh_hotplug_unmount:
return -(ret);
}
static void nu_card_detector(nu_sdh_t sdh)
{
SDH_T *sdh_base = sdh->base;
unsigned int volatile isr = sdh_base->INTSTS;
if (isr & SDH_INTSTS_CDSTS_Msk)
{
/* Card removed */
sdh->info->IsCardInsert = FALSE; // SDISR_CD_Card = 1 means card remove for GPIO mode
rt_memset((void *)sdh->info, 0, sizeof(SDH_INFO_T));
nu_sdh_hotplug_unmount(sdh);
}
else
{
SDH_Open(sdh_base, CardDetect_From_GPIO);
if (!SDH_Probe(sdh_base))
{
/* Card inserted */
nu_sdh_hotplug_mount(sdh);
}
}
}
static void sdh_hotplugger(void *param)
{
rt_uint32_t e;
int i;
for (i = (SDH_START + 1); i < SDH_CNT; i++)
{
if (SDH_IS_CARD_PRESENT(nu_sdh_arr[i].base))
{
nu_sdh_hotplug_mount(&nu_sdh_arr[i]);
}
}
while (1)
{
if (rt_event_recv(&sdh_event, (NU_SDH_CARD_EVENT_ALL),
RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR,
RT_WAITING_FOREVER, &e) == RT_EOK)
{
/* Debounce */
rt_thread_delay(200);
switch (e)
{
#if defined(BSP_USING_SDH0)
case NU_SDH_CARD_DETECTED_SD0:
nu_card_detector(&nu_sdh_arr[SDH0_IDX]);
break;
#endif
default:
break;
} //switch(e)
} //if
} /* while(1) */
}
int mnt_init_sdcard_hotplug(void)
{
rt_thread_init(&sdh_tid, "hotplug", sdh_hotplugger, NULL, sdh_stack, sizeof(sdh_stack), RT_THREAD_PRIORITY_MAX - 2, 10);
rt_thread_startup(&sdh_tid);
return 0;
}
INIT_ENV_EXPORT(mnt_init_sdcard_hotplug);
#endif
#endif //#if defined(BSP_USING_SDH)
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