---> sdio_io_rw_ext_helper(func, 1, addr, 0, src, count); //function: Split an arbitrarily sized data transfer into several IO_RW_EXTENDED commands. 一个任意大小的数据传输分裂成几IO_RW_EXTENDED命令。 ---> mmc_io_rw_extended(func->card, write,func->num, addr, incr_addr, buf,bl...
pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) { ret = -ENOMEM; goto err_pdata_io_clk; } if (pdev->dev.of_node) { ret = sdhci_s3c_parse_dt(&pdev->dev, host, pdata); if (ret) goto err_pdata_io_clk; } else { memcpy(pdata, pdev->...
—-> sdio_writesb(card->func, card->ioport,packet->buffer, packet->nb); //将io端口、sk_buff的数据包信息写到card->func中。 —-> sdio_io_rw_ext_helper(func, 1, addr, 0, src, count); //function: Split an arbitrarily sized data transfer into several IO_RW_EXTENDED commands. 一个...
ret = -ENOMEM; goto err_pdata_io_clk; } if (pdev->dev.of_node) { ret = sdhci_s3c_parse_dt(&pdev->dev, host, pdata); if (ret) goto err_pdata_io_clk; } else { memcpy(pdata, pdev->dev.platform_data, sizeof(*pdata)); sc->ext_cd_gpio = -1; /* invalid gpio numbe...
intret=sdio_memcpy_fromio(self->sdio_func,dst,addr,count); // printk("sdio_memcpy_fromio 0x%x:%d ret %d\n", addr, count, ret); #if defined(CONFIG_XRADIO_DEBUG) // print_hex_dump_bytes("sdio read ", 0, dst, min(count,32)); ...
[ 32.995483] [<c02b3415>] (mmc_io_rw_extended+0x16b/0x1be) from [<c02b4055>] (sdio_io_rw_ext_helper+0xf9/0x120) [ 33.005906] [<c02b4055>] (sdio_io_rw_ext_helper+0xf9/0x120) from [<c02b408b>] (sdio_memcpy_fromio+0xf/0x14) ...
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大块数据的发送和接收使用CMD53命令来完成,内核为该命令提供mmc_io_rw_extended函数,以及该函数的一些高级接口,包括数据发送接口:sdio_memcpy_toio和sdio_writesb;数据接收接口:sdio_memcpy_fromio和sdio_readsb。 SDIO接口模块与SDIO设备之间数据传输使用自定义的数据帧格式。根据分层思想,实际传输的数据也可以包含更上...
| AS arch/arm/lib/io-writesl.o| AS arch/arm/lib/io-writesw-armv4.o| AS arch/arm/lib/lib1funcs.o| AS arch/arm/lib/lshrdi3.o| AS arch/arm/lib/memchr.o| AS arch/arm/lib/memcpy.o| AS arch/arm/lib/memmove.o| AS arch/arm/lib/memset.o| AS arch/arm/lib...
memcpy(packet->buffer + 4, buf, nb); //复制buf的数据到packet queue_work(card->workqueue, &card->packet_worker); static const struct net_device_ops lbs_netdev_ops = { .ndo_open = lbs_dev_open, .ndo_stop = lbs_eth_stop,