static int sd_welcome_card(struct sd_host *host) { int retval; /* soft reset the card */ retval = sd_reset_sequence(host); if (retval < 0 || sd_card_is_bad(host)) goto out; /* read Operating Conditions Register */ retval = sd_read_ocr(host); if (retval < 0) goto err_bad_card; /* refuse to drive cards reporting voltage ranges out of scope */ if (!(host->ocr & host->ocr_avail)) { sd_printk(KERN_WARNING, "reported OCR (%08x)" " indicates that it is not safe to use this" " card with a GameCube\n", host->ocr); retval = -ENODEV; goto err_bad_card; } /* read and decode the Card Specific Data */ retval = sd_read_csd(host); if (retval < 0) goto err_bad_card; mmc_decode_csd(&host->card); /* calculate some card access related timeouts */ sd_calc_timeouts(host); /* read and decode the Card Identification Data */ retval = sd_read_cid(host); if (retval < 0) goto err_bad_card; mmc_decode_cid(&host->card); sd_printk(KERN_INFO, "slot%d: descr \"%s\", size %luk, block %ub," " serial %08x\n", to_channel(exi_get_exi_channel(host->exi_device)), host->card.cid.prod_name, (unsigned long)((host->card.csd.capacity * (1 << host->card.csd.read_blkbits)) / 1024), 1 << host->card.csd.read_blkbits, host->card.cid.serial); retval = 0; goto out; err_bad_card: sd_card_set_bad(host); out: return retval; }
/* * Initializes the block layer interfaces. */ static int sd_init_blk_dev(struct sd_host *host) { struct gendisk *disk; struct request_queue *queue; int channel; int retval; channel = to_channel(exi_get_exi_channel(host->exi_device)); /* queue */ retval = -ENOMEM; spin_lock_init(&host->queue_lock); queue = blk_init_queue(sd_request_func, &host->queue_lock); if (!queue) { sd_printk(KERN_ERR, "error initializing queue\n"); goto err_blk_init_queue; } blk_queue_dma_alignment(queue, EXI_DMA_ALIGN); blk_queue_max_phys_segments(queue, 1); blk_queue_max_hw_segments(queue, 1); blk_queue_max_sectors(queue, 8); queue_flag_set_unlocked(QUEUE_FLAG_NONROT, queue); queue->queuedata = host; host->queue = queue; /* disk */ disk = alloc_disk(1 << MMC_SHIFT); if (!disk) { sd_printk(KERN_ERR, "error allocating disk\n"); goto err_alloc_disk; } disk->major = SD_MAJOR; disk->first_minor = channel << MMC_SHIFT; disk->fops = &sd_fops; sprintf(disk->disk_name, "%s%c", SD_NAME, 'a' + channel); disk->private_data = host; disk->queue = host->queue; host->disk = disk; retval = 0; goto out; err_alloc_disk: blk_cleanup_queue(host->queue); host->queue = NULL; err_blk_init_queue: out: return retval; }
/* * Initializes and launches the IO thread. */ static int sd_init_io_thread(struct sd_host *host) { int channel; int result = 0; channel = to_channel(exi_get_exi_channel(host->exi_device)); mutex_init(&host->io_mutex); host->io_thread = kthread_run(sd_io_thread, host, "ksdiod/%c", 'a' + channel); if (IS_ERR(host->io_thread)) { sd_printk(KERN_ERR, "error creating io thread\n"); result = PTR_ERR(host->io_thread); } return result; }