* the GNU General Public License.
*
* Copyright 2007 Develer S.r.l. (http://www.develer.com/)
- *
* -->
*
- * \brief Function library for AT45DBXX Data Flash memory.
- *
+ * \brief Function library for dataflash AT45DB family (implementation).
*
- * \version $Id: dataflash.c 20677 2008-02-19 14:29:52Z batt $
+ * \version $Id$
* \author Daniele Basile <asterix@develer.com>
* \author Francesco Sacchi <batt@develer.com>
*/
#include "dataflash.h"
-#include <appconfig.h>
+#include "cfg/cfg_dataflash.h"
#include <cfg/macros.h>
#include <cfg/debug.h>
#include <cfg/module.h>
+
+// Define logging setting (for cfg/log.h module).
+#define LOG_LEVEL DATAFLASH_LOG_LEVEL
+#define LOG_FORMAT DATAFLASH_LOG_FORMAT
+#include <cfg/log.h>
+
#include <drv/timer.h>
-#include <kern/kfile.h>
-#if CONFIG_KERNEL
-#include <kern/proc.h>
-#endif
+#include <fs/battfs.h>
+
+#include <io/kfile.h>
+
+#include <cpu/power.h> /* cpu_relax() */
#include <string.h>
.page_cnt = 4096,
.read_cmd = DFO_READ_FLASH_MEM_BYTE_D,
},
+ {
+ /* AT45DB642D */
+ .density_id = 0x0F,
+ .page_size = 1056,
+ .page_bits = 11,
+ .page_cnt = 8192,
+ .read_cmd = DFO_READ_FLASH_MEM_BYTE_D,
+ },
/* Add other memories here */
};
* Macro that toggle CS of dataflash.
* \note This is equivalent to fd->setCS(false) immediately followed by fd->setCS(true).
*/
-INLINE void CS_TOGGLE(KFileDataflash *fd)
+INLINE void CS_TOGGLE(DataFlash *fd)
{
fd->setCS(false);
fd->setCS(true);
* This function send only 4 byte: opcode, page address and
* byte address.
*/
-static void send_cmd(KFileDataflash *fd, dataflash_page_t page_addr, dataflash_offset_t byte_addr, DataFlashOpcode opcode)
+static void send_cmd(DataFlash *fd, dataflash_page_t page_addr, dataflash_offset_t byte_addr, DataFlashOpcode opcode)
{
/*
* page address, in last byte we write a byte page address.
* (see datasheet for more detail).
*
- * \note Generaly a defaul memory page size is more than 256 byte.
+ * \note Generally a default memory page size is more than 256 byte.
* In this case we need for addressing a byte in one page more than
* 8 bit, so we put in fourth byte low part of address byte, and
* hight part of address byte in third byte togheter low par of page
* with one pulse reset long about 10usec.
*
*/
-static void dataflash_reset(KFileDataflash *fd)
+static void dataflash_reset(DataFlash *fd)
{
fd->setCS(false);
/**
* Read status register of dataflah memory.
*/
-static uint8_t dataflash_stat(KFileDataflash *fd)
+static uint8_t dataflash_stat(DataFlash *fd)
{
/*
* Make sure to toggle CS signal
* and reset dataflash command decoder.
*/
CS_TOGGLE(fd);
-
kfile_putc(DFO_READ_STATUS, fd->channel);
-
return kfile_getc(fd->channel);
}
* return status register value.
*
*/
-static uint8_t dataflash_cmd(KFileDataflash *fd, dataflash_page_t page_addr, dataflash_offset_t byte_addr, DataFlashOpcode opcode)
+static uint8_t dataflash_cmd(DataFlash *fd, dataflash_page_t page_addr, dataflash_offset_t byte_addr, DataFlashOpcode opcode)
{
uint8_t stat;
* is high.
*/
while (!(dataflash_stat(fd) & BUSY_BIT))
- {
- #if CONFIG_KERNEL
- proc_switch();
- #endif
- }
+ cpu_relax();
stat = dataflash_stat(fd);
* Read \a len bytes from main data flash memory or buffer data
* flash memory, and put it in \a *block.
*/
-static void dataflash_readBlock(KFileDataflash *fd, dataflash_page_t page_addr, dataflash_offset_t byte_addr, DataFlashOpcode opcode, uint8_t *block, dataflash_size_t len)
+static void dataflash_readBlock(DataFlash *fd, dataflash_page_t page_addr, dataflash_offset_t byte_addr, uint8_t *block, dataflash_size_t len)
{
+ DataFlashOpcode opcode = mem_info[fd->dev].read_cmd;
send_cmd(fd, page_addr, byte_addr, opcode);
if (opcode == DFO_READ_FLASH_MEM_BYTE_B)
* To perform a write in main memory you must first write in dataflash buffer
* memory and then send a command to write the page in main memory.
*/
-static void dataflash_writeBlock(KFileDataflash *fd, dataflash_offset_t offset, DataFlashOpcode opcode, const uint8_t *block, dataflash_size_t len)
+static void dataflash_writeBlock(DataFlash *fd, dataflash_offset_t offset, const uint8_t *block, dataflash_size_t len)
{
ASSERT(offset + len <= mem_info[fd->dev].page_size);
- send_cmd(fd, 0x00, offset, opcode);
+ send_cmd(fd, 0x00, offset, DFO_WRITE_BUFF1);
kfile_write(fd->channel, block, len); //Write len bytes.
kfile_flush(fd->channel); // Flush channel
/**
- * Load selct page from dataflash memory to buffer.
+ * Load selected page from dataflash memory to buffer.
*/
-static void dataflash_loadPage(KFileDataflash *fd, dataflash_page_t page_addr)
+static void dataflash_loadPage(DataFlash *fd, dataflash_page_t page_addr)
{
dataflash_cmd(fd, page_addr, 0x00, DFO_MOV_MEM_TO_BUFF1);
}
+/* Battfs disk interface section */
+#if 0
+static size_t dataflash_disk_page_read(struct BattFsSuper *d, pgcnt_t page, pgaddr_t addr, void *buf, size_t len)
+{
+ DataFlash *fd = DATAFLASH_CAST((KFile *)d->disk_ctx);
+ dataflash_readBlock(fd, page, addr, buf, len);
+ return len;
+}
+
+static bool dataflash_disk_page_load(struct BattFsSuper *d, pgcnt_t page)
+{
+ DataFlash *fd = DATAFLASH_CAST((KFile *)d->disk_ctx);
+ dataflash_loadPage(fd, page);
+ return true;
+}
+
+static size_t dataflash_disk_buffer_write(struct BattFsSuper *d, pgaddr_t addr, const void *buf, size_t len)
+{
+ DataFlash *fd = DATAFLASH_CAST((KFile *)d->disk_ctx);
+ dataflash_writeBlock(fd, addr, buf, len);
+ return len;
+}
+
+static size_t dataflash_disk_buffer_read(struct BattFsSuper *d, pgaddr_t addr, void *buf, size_t len)
+{
+ DataFlash *fd = DATAFLASH_CAST((KFile *)d->disk_ctx);
+ ASSERT(addr + len <= mem_info[fd->dev].page_size);
+
+ CS_TOGGLE(fd);
+
+ kfile_putc(DFO_READ_BUFF1, fd->channel);
+
+ uint32_t byte_addr = addr;
+
+ kfile_putc((byte_addr >> 16) & 0xff, fd->channel);
+ kfile_putc((byte_addr >> 8) & 0xff, fd->channel);
+ kfile_putc(byte_addr & 0xff, fd->channel);
+
+ /* Send additional don't care byte to start read operation */
+ kfile_putc(0, fd->channel);
+
+ kfile_read(fd->channel, buf, len); //Read len bytes ad put in buffer.
+ kfile_flush(fd->channel); // Flush channel
+ fd->setCS(false);
+ return len;
+}
+
+static bool dataflash_disk_page_save(struct BattFsSuper *d, pgcnt_t page)
+{
+ DataFlash *fd = DATAFLASH_CAST((KFile *)d->disk_ctx);
+ dataflash_cmd(fd, page, 0x00, DFO_WRITE_BUFF1_TO_MEM);
+ return true;
+}
+
+static bool dataflash_disk_page_erase(struct BattFsSuper *d, pgcnt_t page)
+{
+ DataFlash *fd = DATAFLASH_CAST((KFile *)d->disk_ctx);
+ dataflash_cmd(fd, page, 0x00, DFO_ERASE_PAGE);
+ return true;
+}
+
+static int dataflash_close(struct KFile *_fd);
+
+static bool dataflash_disk_close(struct BattFsSuper *d)
+{
+ DataFlash *fd = DATAFLASH_CAST((KFile *)d->disk_ctx);
+ return dataflash_close(&fd->fd) == 0;
+}
+
+bool dataflash_diskInit(struct BattFsSuper *d, DataFlash *fd, pgcnt_t *page_array)
+{
+ ASSERT(d);
+ ASSERT(fd);
+ d->read = dataflash_disk_page_read;
+ d->load = dataflash_disk_page_load;
+ d->bufferWrite = dataflash_disk_buffer_write;
+ d->bufferRead = dataflash_disk_buffer_read;
+ d->save = dataflash_disk_page_save;
+ d->erase = dataflash_disk_page_erase;
+ d->close = dataflash_disk_close;
+ d->disk_ctx = fd;
+ d->page_size = mem_info[fd->dev].page_size;
+ d->page_count = mem_info[fd->dev].page_cnt;
+ ASSERT(page_array);
+ d->page_array = page_array;
+ return d->page_array && fd;
+}
+#endif
+
+/* Kfile interface section */
+
/**
* Flush select page (stored in buffer) in data flash main memory page.
*/
static int dataflash_flush(KFile *_fd)
{
- KFileDataflash *fd = KFILEDATAFLASH(_fd);
+ DataFlash *fd = DATAFLASH_CAST(_fd);
if (fd->page_dirty)
{
dataflash_cmd(fd, fd->current_page, 0x00, DFO_WRITE_BUFF1_TO_MEM_E);
fd->page_dirty = false;
- kprintf("Flushing page <%ld>\n", fd->current_page);
+ LOG_INFO("Flushing page {%ld}\n", fd->current_page);
}
return 0;
}
-/* Kfile interface section */
/**
* Close file \a fd.
static int dataflash_close(struct KFile *_fd)
{
dataflash_flush(_fd);
- TRACE;
+ LOG_INFO("Close.\n");
return 0;
}
*/
static KFile *dataflash_reopen(KFile *_fd)
{
- KFileDataflash *fd = KFILEDATAFLASH(_fd);
+ DataFlash *fd = DATAFLASH_CAST(_fd);
dataflash_close(_fd);
fd->current_page = 0;
/* Load selected page from dataflash memory */
dataflash_loadPage(fd, fd->current_page);
- TRACE;
+ LOG_INFO("Reopen.\n");
return &fd->fd;
}
*/
static size_t dataflash_read(struct KFile *_fd, void *buf, size_t size)
{
- KFileDataflash *fd = KFILEDATAFLASH(_fd);
+ DataFlash *fd = DATAFLASH_CAST(_fd);
dataflash_offset_t byte_addr;
dataflash_page_t page_addr;
uint8_t *data = (uint8_t *)buf;
- ASSERT(fd->fd.seek_pos + size <= fd->fd.size);
- size = MIN((uint32_t)size, fd->fd.size - fd->fd.seek_pos);
+ ASSERT(fd->fd.seek_pos + (kfile_off_t)size <= fd->fd.size);
+ size = MIN((kfile_off_t)size, fd->fd.size - fd->fd.seek_pos);
- kprintf("Reading at pos[%lu]\n", fd->fd.seek_pos);
+ LOG_INFO("Reading at pos[%lu]\n", fd->fd.seek_pos);
/*
* We select page and offest from absolute address.
page_addr = fd->fd.seek_pos / mem_info[fd->dev].page_size;
byte_addr = fd->fd.seek_pos % mem_info[fd->dev].page_size;
- kprintf("[page-<%ld>, byte-<%ld>]", page_addr, byte_addr);
+ LOG_INFO("[page-{%ld}, byte-{%ld}]\n", page_addr, byte_addr);
/*
* Flush current page in main memory if
/*
* Read byte in main page data flash memory.
*/
- dataflash_readBlock(fd, page_addr, byte_addr, mem_info[fd->dev].read_cmd, data, size);
+ dataflash_readBlock(fd, page_addr, byte_addr, data, size);
fd->fd.seek_pos += size;
- kprintf("Read %ld bytes\n", size);
+ LOG_INFO("Read %ld bytes\n", (long int)size);
return size;
}
*/
static size_t dataflash_write(struct KFile *_fd, const void *_buf, size_t size)
{
- KFileDataflash *fd = KFILEDATAFLASH(_fd);
+ DataFlash *fd = DATAFLASH_CAST(_fd);
dataflash_offset_t offset;
dataflash_page_t new_page;
const uint8_t *data = (const uint8_t *) _buf;
- ASSERT(fd->fd.seek_pos + size <= fd->fd.size);
- size = MIN((uint32_t)size, fd->fd.size - fd->fd.seek_pos);
+ ASSERT(fd->fd.seek_pos + (kfile_off_t)size <= fd->fd.size);
+ size = MIN((kfile_off_t)size, fd->fd.size - fd->fd.seek_pos);
- kprintf("Writing at pos[%lu]\n", fd->fd.seek_pos);
+ LOG_INFO("Writing at pos[%lu]\n", fd->fd.seek_pos);
while (size)
{
offset = fd->fd.seek_pos % mem_info[fd->dev].page_size;
- size_t wr_len = MIN(size, mem_info[fd->dev].page_size - offset);
+ size_t wr_len = MIN((dataflash_size_t)size, mem_info[fd->dev].page_size - offset);
- kprintf(" [page-<%ld>, byte-<%ld>]",new_page, offset);
+ LOG_INFO("[page-{%ld}, byte-{%ld}]\n",new_page, offset);
if (new_page != fd->current_page)
{
dataflash_loadPage(fd, new_page);
fd->current_page = new_page;
- kprintf(" >> Load page: <%ld> ", new_page);
+ LOG_INFO(" >> Load page: {%ld}\n", new_page);
}
/*
* Write byte in current page, and set true
* page_dirty flag.
*/
- dataflash_writeBlock(fd, offset, DFO_WRITE_BUFF1, data, wr_len);
+ dataflash_writeBlock(fd, offset, data, wr_len);
fd->page_dirty = true;
data += wr_len;
total_write += wr_len;
}
- kprintf("written %lu bytes\n", total_write);
+ LOG_INFO("written %lu bytes\n", (long unsigned)total_write);
return total_write;
}
* \return true if ok, false if memory density read from dataflash is not compliant with the
* configured one.
*/
-bool dataflash_init(KFileDataflash *fd, KFile *ch, DataflashType dev, dataflash_setCS_t *setCS, dataflash_setReset_t *setReset)
+bool dataflash_init(DataFlash *fd, KFile *ch, DataflashType dev, dataflash_setCS_t *setCS, dataflash_setReset_t *setReset)
{
uint8_t stat;
- MOD_CHECK(dataflash_hw);
+ MOD_CHECK(hw_dataflash);
ASSERT(fd);
ASSERT(ch);
fd->fd.flush = dataflash_flush;
dataflash_reset(fd);
-
stat = dataflash_stat(fd);
/*
projects / bertos.git / blobdiff