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Diffstat (limited to 'target/linux/brcm-2.4/files/drivers/mtd/devices/sflash.c')
-rw-r--r--target/linux/brcm-2.4/files/drivers/mtd/devices/sflash.c733
1 files changed, 483 insertions, 250 deletions
diff --git a/target/linux/brcm-2.4/files/drivers/mtd/devices/sflash.c b/target/linux/brcm-2.4/files/drivers/mtd/devices/sflash.c
index a987388ab2..62c7802221 100644
--- a/target/linux/brcm-2.4/files/drivers/mtd/devices/sflash.c
+++ b/target/linux/brcm-2.4/files/drivers/mtd/devices/sflash.c
@@ -1,298 +1,531 @@
/*
* Broadcom SiliconBackplane chipcommon serial flash interface
*
- * Copyright 2001-2003, Broadcom Corporation
- * All Rights Reserved.
- *
- * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
- * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
- * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
+ * Copyright 2007, Broadcom Corporation
+ * All Rights Reserved.
+ *
+ * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
+ * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
+ * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
*
- * $Id: sflash.c,v 1.1.1.3 2003/11/10 17:43:38 hyin Exp $
+ * $Id$
*/
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/ioport.h>
-#include <linux/mtd/compatmac.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/partitions.h>
-#include <linux/errno.h>
-#include <linux/pci.h>
-#include <linux/delay.h>
-#include <asm/io.h>
-
-#ifdef CONFIG_MTD_PARTITIONS
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/partitions.h>
-#include <linux/minix_fs.h>
-#include <linux/ext2_fs.h>
-#include <linux/romfs_fs.h>
-#include <linux/cramfs_fs.h>
-#include <linux/jffs2.h>
-#endif
-
#include <typedefs.h>
-#include <bcmdevs.h>
-#include <bcmutils.h>
#include <osl.h>
-#include <bcmutils.h>
-#include <bcmnvram.h>
+#include <sbutils.h>
#include <sbconfig.h>
#include <sbchipc.h>
+#include <bcmdevs.h>
#include <sflash.h>
-#include <trxhdr.h>
-
-#ifdef CONFIG_MTD_PARTITIONS
-extern struct mtd_partition * init_mtd_partitions(struct mtd_info *mtd, size_t size);
-#endif
-
-struct sflash_mtd {
- chipcregs_t *cc;
- struct semaphore lock;
- struct mtd_info mtd;
- struct mtd_erase_region_info regions[1];
-};
/* Private global state */
-static struct sflash_mtd sflash;
+static struct sflash sflash;
-static int
-sflash_mtd_poll(struct sflash_mtd *sflash, unsigned int offset, int timeout)
+/* Issue a serial flash command */
+static INLINE void
+sflash_cmd (osl_t * osh, chipcregs_t * cc, uint opcode)
{
- int now = jiffies;
- int ret = 0;
+ W_REG (osh, &cc->flashcontrol, SFLASH_START | opcode);
+ while (R_REG (osh, &cc->flashcontrol) & SFLASH_BUSY);
+}
- for (;;) {
- if (!sflash_poll(sflash->cc, offset)) {
- ret = 0;
- break;
- }
- if (time_after(jiffies, now + timeout)) {
- printk(KERN_ERR "sflash: timeout\n");
- ret = -ETIMEDOUT;
- break;
- }
- if (current->need_resched) {
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(timeout / 10);
- } else
- udelay(1);
+/* Initialize serial flash access */
+struct sflash *
+sflash_init (sb_t * sbh, chipcregs_t * cc)
+{
+ uint32 id, id2;
+ osl_t *osh;
+
+ ASSERT (sbh);
+
+ osh = sb_osh (sbh);
+
+ bzero (&sflash, sizeof (sflash));
+
+ sflash.type = sbh->cccaps & CC_CAP_FLASH_MASK;
+
+ switch (sflash.type)
+ {
+ case SFLASH_ST:
+ /* Probe for ST chips */
+ sflash_cmd (osh, cc, SFLASH_ST_DP);
+ sflash_cmd (osh, cc, SFLASH_ST_RES);
+ id = R_REG (osh, &cc->flashdata);
+ switch (id)
+ {
+ case 0x11:
+ /* ST M25P20 2 Mbit Serial Flash */
+ sflash.blocksize = 64 * 1024;
+ sflash.numblocks = 4;
+ break;
+ case 0x12:
+ /* ST M25P40 4 Mbit Serial Flash */
+ sflash.blocksize = 64 * 1024;
+ sflash.numblocks = 8;
+ break;
+ case 0x13:
+ /* ST M25P80 8 Mbit Serial Flash */
+ sflash.blocksize = 64 * 1024;
+ sflash.numblocks = 16;
+ break;
+ case 0x14:
+ /* ST M25P16 16 Mbit Serial Flash */
+ sflash.blocksize = 64 * 1024;
+ sflash.numblocks = 32;
+ break;
+ case 0x15:
+ /* ST M25P32 32 Mbit Serial Flash */
+ sflash.blocksize = 64 * 1024;
+ sflash.numblocks = 64;
+ break;
+ case 0x16:
+ /* ST M25P64 64 Mbit Serial Flash */
+ sflash.blocksize = 64 * 1024;
+ sflash.numblocks = 128;
+ break;
+ case 0xbf:
+ W_REG (osh, &cc->flashaddress, 1);
+ sflash_cmd (osh, cc, SFLASH_ST_RES);
+ id2 = R_REG (osh, &cc->flashdata);
+ if (id2 == 0x44)
+ {
+ /* SST M25VF80 4 Mbit Serial Flash */
+ sflash.blocksize = 64 * 1024;
+ sflash.numblocks = 8;
+ }
+ break;
}
+ break;
+
+ case SFLASH_AT:
+ /* Probe for Atmel chips */
+ sflash_cmd (osh, cc, SFLASH_AT_STATUS);
+ id = R_REG (osh, &cc->flashdata) & 0x3c;
+ switch (id)
+ {
+ case 0xc:
+ /* Atmel AT45DB011 1Mbit Serial Flash */
+ sflash.blocksize = 256;
+ sflash.numblocks = 512;
+ break;
+ case 0x14:
+ /* Atmel AT45DB021 2Mbit Serial Flash */
+ sflash.blocksize = 256;
+ sflash.numblocks = 1024;
+ break;
+ case 0x1c:
+ /* Atmel AT45DB041 4Mbit Serial Flash */
+ sflash.blocksize = 256;
+ sflash.numblocks = 2048;
+ break;
+ case 0x24:
+ /* Atmel AT45DB081 8Mbit Serial Flash */
+ sflash.blocksize = 256;
+ sflash.numblocks = 4096;
+ break;
+ case 0x2c:
+ /* Atmel AT45DB161 16Mbit Serial Flash */
+ sflash.blocksize = 512;
+ sflash.numblocks = 4096;
+ break;
+ case 0x34:
+ /* Atmel AT45DB321 32Mbit Serial Flash */
+ sflash.blocksize = 512;
+ sflash.numblocks = 8192;
+ break;
+ case 0x3c:
+ /* Atmel AT45DB642 64Mbit Serial Flash */
+ sflash.blocksize = 1024;
+ sflash.numblocks = 8192;
+ break;
+ }
+ break;
+ }
- return ret;
+ sflash.size = sflash.blocksize * sflash.numblocks;
+ return sflash.size ? &sflash : NULL;
}
-static int
-sflash_mtd_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf)
+/* Read len bytes starting at offset into buf. Returns number of bytes read. */
+int
+sflash_read (sb_t * sbh, chipcregs_t * cc, uint offset, uint len, uchar * buf)
{
- struct sflash_mtd *sflash = (struct sflash_mtd *) mtd->priv;
- int bytes, ret = 0;
-
- /* Check address range */
- if (!len)
- return 0;
- if ((from + len) > mtd->size)
- return -EINVAL;
-
- down(&sflash->lock);
-
- *retlen = 0;
- while (len) {
- if ((bytes = sflash_read(sflash->cc, (uint) from, len, buf)) < 0) {
- ret = bytes;
- break;
- }
- from += (loff_t) bytes;
- len -= bytes;
- buf += bytes;
- *retlen += bytes;
- }
+ uint8 *from, *to;
+ int cnt, i;
+ osl_t *osh;
- up(&sflash->lock);
+ ASSERT (sbh);
- return ret;
-}
+ if (!len)
+ return 0;
-static int
-sflash_mtd_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf)
-{
- struct sflash_mtd *sflash = (struct sflash_mtd *) mtd->priv;
- int bytes, ret = 0;
-
- /* Check address range */
- if (!len)
- return 0;
- if ((to + len) > mtd->size)
- return -EINVAL;
-
- down(&sflash->lock);
-
- *retlen = 0;
- while (len) {
- if ((bytes = sflash_write(sflash->cc, (uint) to, len, buf)) < 0) {
- ret = bytes;
- break;
- }
- if ((ret = sflash_mtd_poll(sflash, (unsigned int) to, HZ / 10)))
- break;
- to += (loff_t) bytes;
- len -= bytes;
- buf += bytes;
- *retlen += bytes;
- }
+ if ((offset + len) > sflash.size)
+ return -22;
+
+ if ((len >= 4) && (offset & 3))
+ cnt = 4 - (offset & 3);
+ else if ((len >= 4) && ((uintptr) buf & 3))
+ cnt = 4 - ((uintptr) buf & 3);
+ else
+ cnt = len;
+
+ osh = sb_osh (sbh);
- up(&sflash->lock);
+ from = (uint8 *) (uintptr) OSL_UNCACHED (SB_FLASH2 + offset);
+ to = (uint8 *) buf;
- return ret;
+ if (cnt < 4)
+ {
+ for (i = 0; i < cnt; i++)
+ {
+ *to = R_REG (osh, from);
+ from++;
+ to++;
+ }
+ return cnt;
+ }
+
+ while (cnt >= 4)
+ {
+ *(uint32 *) to = R_REG (osh, (uint32 *) from);
+ from += 4;
+ to += 4;
+ cnt -= 4;
+ }
+
+ return (len - cnt);
}
-static int
-sflash_mtd_erase(struct mtd_info *mtd, struct erase_info *erase)
+/* Poll for command completion. Returns zero when complete. */
+int
+sflash_poll (sb_t * sbh, chipcregs_t * cc, uint offset)
{
- struct sflash_mtd *sflash = (struct sflash_mtd *) mtd->priv;
- int i, j, ret = 0;
- unsigned int addr, len;
-
- /* Check address range */
- if (!erase->len)
- return 0;
- if ((erase->addr + erase->len) > mtd->size)
- return -EINVAL;
-
- addr = erase->addr;
- len = erase->len;
-
- down(&sflash->lock);
-
- /* Ensure that requested region is aligned */
- for (i = 0; i < mtd->numeraseregions; i++) {
- for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
- if (addr == mtd->eraseregions[i].offset + mtd->eraseregions[i].erasesize * j &&
- len >= mtd->eraseregions[i].erasesize) {
- if ((ret = sflash_erase(sflash->cc, addr)) < 0)
- break;
- if ((ret = sflash_mtd_poll(sflash, addr, 10 * HZ)))
- break;
- addr += mtd->eraseregions[i].erasesize;
- len -= mtd->eraseregions[i].erasesize;
- }
- }
- if (ret)
- break;
- }
+ osl_t *osh;
- up(&sflash->lock);
+ ASSERT (sbh);
- /* Set erase status */
- if (ret)
- erase->state = MTD_ERASE_FAILED;
- else
- erase->state = MTD_ERASE_DONE;
+ osh = sb_osh (sbh);
- /* Call erase callback */
- if (erase->callback)
- erase->callback(erase);
+ if (offset >= sflash.size)
+ return -22;
- return ret;
-}
+ switch (sflash.type)
+ {
+ case SFLASH_ST:
+ /* Check for ST Write In Progress bit */
+ sflash_cmd (osh, cc, SFLASH_ST_RDSR);
+ return R_REG (osh, &cc->flashdata) & SFLASH_ST_WIP;
+ case SFLASH_AT:
+ /* Check for Atmel Ready bit */
+ sflash_cmd (osh, cc, SFLASH_AT_STATUS);
+ return !(R_REG (osh, &cc->flashdata) & SFLASH_AT_READY);
+ }
-#if LINUX_VERSION_CODE < 0x20212 && defined(MODULE)
-#define sflash_mtd_init init_module
-#define sflash_mtd_exit cleanup_module
-#endif
+ return 0;
+}
-mod_init_t
-sflash_mtd_init(void)
+/* Write len bytes starting at offset into buf. Returns number of bytes
+ * written. Caller should poll for completion.
+ */
+int
+sflash_write (sb_t * sbh, chipcregs_t * cc, uint offset, uint len,
+ const uchar * buf)
{
- struct pci_dev *pdev;
- int ret = 0;
- struct sflash *info;
- uint bank, i;
-#ifdef CONFIG_MTD_PARTITIONS
- struct mtd_partition *parts;
-#endif
-
- if (!(pdev = pci_find_device(VENDOR_BROADCOM, SB_CC, NULL))) {
- printk(KERN_ERR "sflash: chipcommon not found\n");
- return -ENODEV;
+ struct sflash *sfl;
+ int ret = 0;
+ bool is4712b0;
+ uint32 page, byte, mask;
+ osl_t *osh;
+
+ ASSERT (sbh);
+
+ osh = sb_osh (sbh);
+
+ if (!len)
+ return 0;
+
+ if ((offset + len) > sflash.size)
+ return -22;
+
+ sfl = &sflash;
+ switch (sfl->type)
+ {
+ case SFLASH_ST:
+ is4712b0 = (sbh->chip == BCM4712_CHIP_ID) && (sbh->chiprev == 3);
+ /* Enable writes */
+ sflash_cmd (osh, cc, SFLASH_ST_WREN);
+ if (is4712b0)
+ {
+ mask = 1 << 14;
+ W_REG (osh, &cc->flashaddress, offset);
+ W_REG (osh, &cc->flashdata, *buf++);
+ /* Set chip select */
+ OR_REG (osh, &cc->gpioout, mask);
+ /* Issue a page program with the first byte */
+ sflash_cmd (osh, cc, SFLASH_ST_PP);
+ ret = 1;
+ offset++;
+ len--;
+ while (len > 0)
+ {
+ if ((offset & 255) == 0)
+ {
+ /* Page boundary, drop cs and return */
+ AND_REG (osh, &cc->gpioout, ~mask);
+ if (!sflash_poll (sbh, cc, offset))
+ {
+ /* Flash rejected command */
+ return -11;
+ }
+ return ret;
+ }
+ else
+ {
+ /* Write single byte */
+ sflash_cmd (osh, cc, *buf++);
+ }
+ ret++;
+ offset++;
+ len--;
+ }
+ /* All done, drop cs if needed */
+ if ((offset & 255) != 1)
+ {
+ /* Drop cs */
+ AND_REG (osh, &cc->gpioout, ~mask);
+ if (!sflash_poll (sbh, cc, offset))
+ {
+ /* Flash rejected command */
+ return -12;
+ }
+ }
+ }
+ else if (sbh->ccrev >= 20)
+ {
+ W_REG (NULL, &cc->flashaddress, offset);
+ W_REG (NULL, &cc->flashdata, *buf++);
+ /* Issue a page program with CSA bit set */
+ sflash_cmd (osh, cc, SFLASH_ST_CSA | SFLASH_ST_PP);
+ ret = 1;
+ offset++;
+ len--;
+ while (len > 0)
+ {
+ if ((offset & 255) == 0)
+ {
+ /* Page boundary, poll droping cs and return */
+ W_REG (NULL, &cc->flashcontrol, 0);
+ if (!sflash_poll (sbh, cc, offset))
+ {
+ /* Flash rejected command */
+ return -11;
+ }
+ return ret;
+ }
+ else
+ {
+ /* Write single byte */
+ sflash_cmd (osh, cc, SFLASH_ST_CSA | *buf++);
+ }
+ ret++;
+ offset++;
+ len--;
+ }
+ /* All done, drop cs if needed */
+ if ((offset & 255) != 1)
+ {
+ /* Drop cs, poll */
+ W_REG (NULL, &cc->flashcontrol, 0);
+ if (!sflash_poll (sbh, cc, offset))
+ {
+ /* Flash rejected command */
+ return -12;
+ }
+ }
+ }
+ else
+ {
+ ret = 1;
+ W_REG (osh, &cc->flashaddress, offset);
+ W_REG (osh, &cc->flashdata, *buf);
+ /* Page program */
+ sflash_cmd (osh, cc, SFLASH_ST_PP);
+ }
+ break;
+ case SFLASH_AT:
+ mask = sfl->blocksize - 1;
+ page = (offset & ~mask) << 1;
+ byte = offset & mask;
+ /* Read main memory page into buffer 1 */
+ if (byte || (len < sfl->blocksize))
+ {
+ W_REG (osh, &cc->flashaddress, page);
+ sflash_cmd (osh, cc, SFLASH_AT_BUF1_LOAD);
+ /* 250 us for AT45DB321B */
+ SPINWAIT (sflash_poll (sbh, cc, offset), 1000);
+ ASSERT (!sflash_poll (sbh, cc, offset));
}
+ /* Write into buffer 1 */
+ for (ret = 0; (ret < (int) len) && (byte < sfl->blocksize); ret++)
+ {
+ W_REG (osh, &cc->flashaddress, byte++);
+ W_REG (osh, &cc->flashdata, *buf++);
+ sflash_cmd (osh, cc, SFLASH_AT_BUF1_WRITE);
+ }
+ /* Write buffer 1 into main memory page */
+ W_REG (osh, &cc->flashaddress, page);
+ sflash_cmd (osh, cc, SFLASH_AT_BUF1_PROGRAM);
+ break;
+ }
- memset(&sflash, 0, sizeof(struct sflash_mtd));
- init_MUTEX(&sflash.lock);
+ return ret;
+}
- /* Map registers and flash base */
- if (!(sflash.cc = ioremap_nocache(pci_resource_start(pdev, 0),
- pci_resource_len(pdev, 0)))) {
- printk(KERN_ERR "sflash: error mapping registers\n");
- ret = -EIO;
- goto fail;
- }
+/* Erase a region. Returns number of bytes scheduled for erasure.
+ * Caller should poll for completion.
+ */
+int
+sflash_erase (sb_t * sbh, chipcregs_t * cc, uint offset)
+{
+ struct sflash *sfl;
+ osl_t *osh;
+
+ ASSERT (sbh);
+
+ osh = sb_osh (sbh);
+
+ if (offset >= sflash.size)
+ return -22;
+
+ sfl = &sflash;
+ switch (sfl->type)
+ {
+ case SFLASH_ST:
+ sflash_cmd (osh, cc, SFLASH_ST_WREN);
+ W_REG (osh, &cc->flashaddress, offset);
+ sflash_cmd (osh, cc, SFLASH_ST_SE);
+ return sfl->blocksize;
+ case SFLASH_AT:
+ W_REG (osh, &cc->flashaddress, offset << 1);
+ sflash_cmd (osh, cc, SFLASH_AT_PAGE_ERASE);
+ return sfl->blocksize;
+ }
+
+ return 0;
+}
- /* Initialize serial flash access */
- info = sflash_init(sflash.cc);
+/*
+ * writes the appropriate range of flash, a NULL buf simply erases
+ * the region of flash
+ */
+int
+sflash_commit (sb_t * sbh, chipcregs_t * cc, uint offset, uint len,
+ const uchar * buf)
+{
+ struct sflash *sfl;
+ uchar *block = NULL, *cur_ptr, *blk_ptr;
+ uint blocksize = 0, mask, cur_offset, cur_length, cur_retlen, remainder;
+ uint blk_offset, blk_len, copied;
+ int bytes, ret = 0;
+ osl_t *osh;
+
+ ASSERT (sbh);
+
+ osh = sb_osh (sbh);
+
+ /* Check address range */
+ if (len <= 0)
+ return 0;
+
+ sfl = &sflash;
+ if ((offset + len) > sfl->size)
+ return -1;
+
+ blocksize = sfl->blocksize;
+ mask = blocksize - 1;
+
+ /* Allocate a block of mem */
+ if (!(block = MALLOC (osh, blocksize)))
+ return -1;
+
+ while (len)
+ {
+ /* Align offset */
+ cur_offset = offset & ~mask;
+ cur_length = blocksize;
+ cur_ptr = block;
+
+ remainder = blocksize - (offset & mask);
+ if (len < remainder)
+ cur_retlen = len;
+ else
+ cur_retlen = remainder;
+
+ /* buf == NULL means erase only */
+ if (buf)
+ {
+ /* Copy existing data into holding block if necessary */
+ if ((offset & mask) || (len < blocksize))
+ {
+ blk_offset = cur_offset;
+ blk_len = cur_length;
+ blk_ptr = cur_ptr;
+
+ /* Copy entire block */
+ while (blk_len)
+ {
+ copied =
+ sflash_read (sbh, cc, blk_offset, blk_len, blk_ptr);
+ blk_offset += copied;
+ blk_len -= copied;
+ blk_ptr += copied;
+ }
+ }
- if (!info) {
- printk(KERN_ERR "sflash: found no supported devices\n");
- ret = -ENODEV;
- goto fail;
+ /* Copy input data into holding block */
+ memcpy (cur_ptr + (offset & mask), buf, cur_retlen);
}
- /* Setup banks */
- sflash.regions[0].offset = 0;
- sflash.regions[0].erasesize = info->blocksize;
- sflash.regions[0].numblocks = info->numblocks;
- if (sflash.regions[0].erasesize > sflash.mtd.erasesize)
- sflash.mtd.erasesize = sflash.regions[0].erasesize;
- if (sflash.regions[0].erasesize * sflash.regions[0].numblocks) {
- sflash.mtd.size += sflash.regions[0].erasesize * sflash.regions[0].numblocks;
- }
- sflash.mtd.numeraseregions = 1;
- ASSERT(sflash.mtd.size == info->size);
-
- /* Register with MTD */
- sflash.mtd.name = "sflash";
- sflash.mtd.type = MTD_NORFLASH;
- sflash.mtd.flags = MTD_CAP_NORFLASH;
- sflash.mtd.eraseregions = sflash.regions;
- sflash.mtd.module = THIS_MODULE;
- sflash.mtd.erase = sflash_mtd_erase;
- sflash.mtd.read = sflash_mtd_read;
- sflash.mtd.write = sflash_mtd_write;
- sflash.mtd.priv = &sflash;
-
-#ifdef CONFIG_MTD_PARTITIONS
- parts = init_mtd_partitions(&sflash.mtd, sflash.mtd.size);
- for (i = 0; parts[i].name; i++);
- ret = add_mtd_partitions(&sflash.mtd, parts, i);
-#else
- ret = add_mtd_device(&sflash.mtd);
-#endif
- if (ret) {
- printk(KERN_ERR "sflash: add_mtd failed\n");
- goto fail;
+ /* Erase block */
+ if ((ret = sflash_erase (sbh, cc, (uint) cur_offset)) < 0)
+ goto done;
+ while (sflash_poll (sbh, cc, (uint) cur_offset));
+
+ /* buf == NULL means erase only */
+ if (!buf)
+ {
+ offset += cur_retlen;
+ len -= cur_retlen;
+ continue;
}
- return 0;
+ /* Write holding block */
+ while (cur_length > 0)
+ {
+ if ((bytes = sflash_write (sbh, cc,
+ (uint) cur_offset,
+ (uint) cur_length,
+ (uchar *) cur_ptr)) < 0)
+ {
+ ret = bytes;
+ goto done;
+ }
+ while (sflash_poll (sbh, cc, (uint) cur_offset));
+ cur_offset += bytes;
+ cur_length -= bytes;
+ cur_ptr += bytes;
+ }
- fail:
- if (sflash.cc)
- iounmap((void *) sflash.cc);
- return ret;
-}
+ offset += cur_retlen;
+ len -= cur_retlen;
+ buf += cur_retlen;
+ }
-mod_exit_t
-sflash_mtd_exit(void)
-{
-#ifdef CONFIG_MTD_PARTITIONS
- del_mtd_partitions(&sflash.mtd);
-#else
- del_mtd_device(&sflash.mtd);
-#endif
- iounmap((void *) sflash.cc);
+ ret = len;
+done:
+ if (block)
+ MFREE (osh, block, blocksize);
+ return ret;
}
-
-module_init(sflash_mtd_init);
-module_exit(sflash_mtd_exit);
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-28 05:05:15 +0000