移植MT7620A+MT7610E驱动到Openwrt trunk(Linux Kernel 3.14.18)(续：MT7620A)

按照上一篇的内容修改文件重新编译后不会报错，但是烧到flash里后运行的时候有问题，如下：

[   16.840000] mt7620: module license 'unspecified' taints kernel.

[   16.840000] Disabling lock debugging due to kernel taint

[   16.870000] mt7620: Unknown symbol ra_mtd_write_nm (err 0)

[   16.880000] mt7620: Unknown symbol ra_mtd_read_nm (err 0)

[   16.880000] mt7620: Unknown symbol procRegDir (err 0)

[   17.290000] mt7610: Unknown symbol ra_mtd_write_nm (err 0)

[   17.290000] mt7610: Unknown symbol ra_mtd_read_nm (err 0)

[   17.290000] mt7610: Unknown symbol procRegDir (err 0)

[   17.290000] mt7620: Unknown symbol ra_mtd_write_nm (err 0)

[   17.290000] mt7620: Unknown symbol ra_mtd_read_nm (err 0)

[   17.290000] mt7620: Unknown symbol procRegDir (err 0)

[   17.290000] ip_tables: (C) 2000-2006 Netfilter Core Team

[   17.290000] mt7610: Unknown symbol ra_mtd_write_nm (err 0)

[   17.620000] mt7610: Unknown symbol ra_mtd_read_nm (err 0)

[   17.620000] mt7610: Unknown symbol procRegDir (err 0)

[   17.670000] mt7620: Unknown symbol ra_mtd_write_nm (err 0)

[   17.690000] mt7620: Unknown symbol ra_mtd_read_nm (err 0)

[   17.690000] mt7620: Unknown symbol procRegDir (err 0)

[   17.700000] nf_conntrack version 0.5.0 (1979 buckets, 7916 max)

[   17.740000] xt_time: kernel timezone is -0000

[   17.780000] mt7610: Unknown symbol ra_mtd_write_nm (err 0)

[   17.800000] mt7610: Unknown symbol ra_mtd_read_nm (err 0)

[   17.800000] mt7610: Unknown symbol procRegDir (err 0)

[   17.860000] mt7620: Unknown symbol ra_mtd_write_nm (err 0)

[   17.880000] mt7620: Unknown symbol ra_mtd_read_nm (err 0)

[   17.880000] mt7620: Unknown symbol procRegDir (err 0)

[   17.900000] PPP generic driver version 2.4.2

[   17.900000] NET: Registered protocol family 24

[   17.940000] mt7610: Unknown symbol ra_mtd_write_nm (err 0)

[   17.960000] mt7610: Unknown symbol ra_mtd_read_nm (err 0)

[   17.960000] mt7610: Unknown symbol procRegDir (err 0)

[   18.020000] mt7620: Unknown symbol ra_mtd_write_nm (err 0)

[   18.020000] mt7620: Unknown symbol ra_mtd_read_nm (err 0)

[   18.040000] mt7620: Unknown symbol procRegDir (err 0)

[   18.080000] mt7610: Unknown symbol ra_mtd_write_nm (err 0)

[   18.090000] mt7610: Unknown symbol ra_mtd_read_nm (err 0)

[   18.100000] mt7610: Unknown symbol procRegDir (err 0)

[   18.160000] mt7620: Unknown symbol ra_mtd_write_nm (err 0)

[   18.160000] mt7620: Unknown symbol ra_mtd_read_nm (err 0)

[   18.180000] mt7620: Unknown symbol procRegDir (err 0)

[   28.440000] device eth0.1 entered promiscuous mode

 

解决方法：

移植7620

1. 添加os/linux/rt_flash.c 内容为：

#include <linux/module.h>

#include <linux/types.h>

#include <linux/init.h>

#include <linux/kernel.h>

#include <linux/version.h>

#include <linux/err.h>

#include <linux/slab.h>

#include <linux/delay.h>

#include <linux/sched.h>

#include <linux/backing-dev.h>

#include <linux/compat.h>

#include <linux/mount.h>

#include <linux/mtd/mtd.h>

#include <linux/mtd/map.h>

#include <linux/mtd/concat.h>

#include <linux/mtd/partitions.h>



struct proc_dir_entry *procRegDir;

/*

 * Flash API: ra_mtd_read, ra_mtd_write

 * Arguments:

 *   - num: specific the mtd number

 *   - to/from: the offset to read from or written to

 *   - len: length

 *   - buf: data to be read/written

 * Returns:

 *   - return -errno if failed

 *   - return the number of bytes read/written if successed

 */

int ra_mtd_write_nm(char *name, loff_t to, size_t len, const u_char *buf)

{

    int ret = -1;

    size_t rdlen, wrlen;

    struct mtd_info *mtd;

    struct erase_info ei;

    u_char *bak = NULL;



    mtd = get_mtd_device_nm(name);



    if (IS_ERR(mtd)) {

        ret = (int)mtd;

        goto out;

    }



    if (len > mtd->erasesize) {

        put_mtd_device(mtd);

        ret = -E2BIG;

        goto out;

    }



    bak = kzalloc(mtd->erasesize, GFP_KERNEL);

    if (bak == NULL) {

        put_mtd_device(mtd);

        ret = -ENOMEM;

        goto out;

    }



#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0)

    ret = mtd_read(mtd, 0, mtd->erasesize, &rdlen, bak);

#else

    ret = mtd->read(mtd, 0, mtd->erasesize, &rdlen, bak);

#endif

    if (ret) {

        goto free_out;

    }



    if (rdlen != mtd->erasesize)

        printk("warning: ra_mtd_write_nm: rdlen is not equal to erasesize\n");



    memcpy(bak + to, buf, len);



    ei.mtd = mtd;

    ei.callback = NULL;

    ei.addr = 0;

    ei.len = mtd->erasesize;

    ei.priv = 0;



#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0)

    ret = mtd_erase(mtd, &ei);

#else

    ret = mtd->erase(mtd, &ei);

#endif

    if (ret != 0)

        goto free_out;



#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0)

    ret = mtd_write(mtd, 0, mtd->erasesize, &wrlen, bak);

#else

    ret = mtd->write(mtd, 0, mtd->erasesize, &wrlen, bak);

#endif



    udelay(10); /* add delay after write */



free_out:

    if (mtd)

        put_mtd_device(mtd);



    if (bak)

        kfree(bak);

out:

    return ret;

}



int ra_mtd_read_nm(char *name, loff_t from, size_t len, u_char *buf)

{

    int ret;

    size_t rdlen = 0;

    struct mtd_info *mtd;



    mtd = get_mtd_device_nm(name);

    if (IS_ERR(mtd))

        return (int)mtd;



#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0)

    ret = mtd_read(mtd, from, len, &rdlen, buf);

#else

    ret = mtd->read(mtd, from, len, &rdlen, buf);

#endif

    if (rdlen != len)

        printk("warning: ra_mtd_read_nm: rdlen is not equal to len\n");



    put_mtd_device(mtd);

    return ret;

}



EXPORT_SYMBOL(ra_mtd_write_nm);

EXPORT_SYMBOL(ra_mtd_read_nm);

EXPORT_SYMBOL(procRegDir);



MODULE_AUTHOR("Steven Liu <[email protected]>");

MODULE_DESCRIPTION("Ralink APSoC Flash Map");

MODULE_LICENSE("GPL");

2. 修改os/linux/rt_proc.c

将

struct proc_dir_entry *procRegDir

 改为：

struct proc_dir_entry *procRegDir2860v2

并将该文件中所有调用procRegDir 的地方改为： procRegDir2860v2

 

3. 在Makefile中添加

rt2860v2_ap-objs += ../rt2860v2/os/linux/rt_flash.o

4. 修改 include/chip/rt2880.h
将：

#include <asm/rt2880/rt_mmap.h> 

改为： 

#include "rt_mmap.h" //fix

5. 修改 include/iface/rtmp_rbs.h

将：

#define RTMP_MAC_IRQ_NUM    4

 改为 

#define RTMP_MAC_IRQ_NUM    6

6. 修改 include/video.h

添加 

VOID VideoTurbineDynamicTune(IN PRTMP_ADAPTER pAd);