1 files changed, 0 insertions, 306 deletions
diff --git a/drivers/block/rsxx/dev.c b/drivers/block/rsxx/dev.c
deleted file mode 100644
index dd33f1bdf3b8..000000000000
--- a/drivers/block/rsxx/dev.c
+++ /dev/null
@@ -1,306 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
-* Filename: dev.c
-*
-* Authors: Joshua Morris <josh.h.morris@us.ibm.com>
-*	Philip Kelleher <pjk1939@linux.vnet.ibm.com>
-*
-* (C) Copyright 2013 IBM Corporation
-*/
-
-#include <linux/kernel.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/slab.h>
-
-#include <linux/hdreg.h>
-#include <linux/genhd.h>
-#include <linux/blkdev.h>
-#include <linux/bio.h>
-
-#include <linux/fs.h>
-
-#include "rsxx_priv.h"
-
-static unsigned int blkdev_minors = 64;
-module_param(blkdev_minors, uint, 0444);
-MODULE_PARM_DESC(blkdev_minors, "Number of minors(partitions)");
-
-/*
- * For now I'm making this tweakable in case any applications hit this limit.
- * If you see a "bio too big" error in the log you will need to raise this
- * value.
- */
-static unsigned int blkdev_max_hw_sectors = 1024;
-module_param(blkdev_max_hw_sectors, uint, 0444);
-MODULE_PARM_DESC(blkdev_max_hw_sectors, "Max hw sectors for a single BIO");
-
-static unsigned int enable_blkdev = 1;
-module_param(enable_blkdev , uint, 0444);
-MODULE_PARM_DESC(enable_blkdev, "Enable block device interfaces");
-
-
-struct rsxx_bio_meta {
-	struct bio	*bio;
-	atomic_t	pending_dmas;
-	atomic_t	error;
-	unsigned long	start_time;
-};
-
-static struct kmem_cache *bio_meta_pool;
-
-static void rsxx_submit_bio(struct bio *bio);
-
-/*----------------- Block Device Operations -----------------*/
-static int rsxx_blkdev_ioctl(struct block_device *bdev,
-				 fmode_t mode,
-				 unsigned int cmd,
-				 unsigned long arg)
-{
-	struct rsxx_cardinfo *card = bdev->bd_disk->private_data;
-
-	switch (cmd) {
-	case RSXX_GETREG:
-		return rsxx_reg_access(card, (void __user *)arg, 1);
-	case RSXX_SETREG:
-		return rsxx_reg_access(card, (void __user *)arg, 0);
-	}
-
-	return -ENOTTY;
-}
-
-static int rsxx_getgeo(struct block_device *bdev, struct hd_geometry *geo)
-{
-	struct rsxx_cardinfo *card = bdev->bd_disk->private_data;
-	u64 blocks = card->size8 >> 9;
-
-	/*
-	 * get geometry: Fake it. I haven't found any drivers that set
-	 * geo->start, so we won't either.
-	 */
-	if (card->size8) {
-		geo->heads = 64;
-		geo->sectors = 16;
-		do_div(blocks, (geo->heads * geo->sectors));
-		geo->cylinders = blocks;
-	} else {
-		geo->heads = 0;
-		geo->sectors = 0;
-		geo->cylinders = 0;
-	}
-	return 0;
-}
-
-static const struct block_device_operations rsxx_fops = {
-	.owner		= THIS_MODULE,
-	.submit_bio	= rsxx_submit_bio,
-	.getgeo		= rsxx_getgeo,
-	.ioctl		= rsxx_blkdev_ioctl,
-};
-
-static void bio_dma_done_cb(struct rsxx_cardinfo *card,
-			    void *cb_data,
-			    unsigned int error)
-{
-	struct rsxx_bio_meta *meta = cb_data;
-
-	if (error)
-		atomic_set(&meta->error, 1);
-
-	if (atomic_dec_and_test(&meta->pending_dmas)) {
-		if (!card->eeh_state && card->gendisk)
-			bio_end_io_acct(meta->bio, meta->start_time);
-
-		if (atomic_read(&meta->error))
-			bio_io_error(meta->bio);
-		else
-			bio_endio(meta->bio);
-		kmem_cache_free(bio_meta_pool, meta);
-	}
-}
-
-static void rsxx_submit_bio(struct bio *bio)
-{
-	struct rsxx_cardinfo *card = bio->bi_bdev->bd_disk->private_data;
-	struct rsxx_bio_meta *bio_meta;
-	blk_status_t st = BLK_STS_IOERR;
-
-	blk_queue_split(&bio);
-
-	might_sleep();
-
-	if (!card)
-		goto req_err;
-
-	if (bio_end_sector(bio) > get_capacity(card->gendisk))
-		goto req_err;
-
-	if (unlikely(card->halt))
-		goto req_err;
-
-	if (unlikely(card->dma_fault))
-		goto req_err;
-
-	if (bio->bi_iter.bi_size == 0) {
-		dev_err(CARD_TO_DEV(card), "size zero BIO!\n");
-		goto req_err;
-	}
-
-	bio_meta = kmem_cache_alloc(bio_meta_pool, GFP_KERNEL);
-	if (!bio_meta) {
-		st = BLK_STS_RESOURCE;
-		goto req_err;
-	}
-
-	bio_meta->bio = bio;
-	atomic_set(&bio_meta->error, 0);
-	atomic_set(&bio_meta->pending_dmas, 0);
-
-	if (!unlikely(card->halt))
-		bio_meta->start_time = bio_start_io_acct(bio);
-
-	dev_dbg(CARD_TO_DEV(card), "BIO[%c]: meta: %p addr8: x%llx size: %d\n",
-		 bio_data_dir(bio) ? 'W' : 'R', bio_meta,
-		 (u64)bio->bi_iter.bi_sector << 9, bio->bi_iter.bi_size);
-
-	st = rsxx_dma_queue_bio(card, bio, &bio_meta->pending_dmas,
-				    bio_dma_done_cb, bio_meta);
-	if (st)
-		goto queue_err;
-
-	return;
-
-queue_err:
-	kmem_cache_free(bio_meta_pool, bio_meta);
-req_err:
-	if (st)
-		bio->bi_status = st;
-	bio_endio(bio);
-}
-
-/*----------------- Device Setup -------------------*/
-static bool rsxx_discard_supported(struct rsxx_cardinfo *card)
-{
-	unsigned char pci_rev;
-
-	pci_read_config_byte(card->dev, PCI_REVISION_ID, &pci_rev);
-
-	return (pci_rev >= RSXX_DISCARD_SUPPORT);
-}
-
-int rsxx_attach_dev(struct rsxx_cardinfo *card)
-{
-	int err = 0;
-
-	mutex_lock(&card->dev_lock);
-
-	/* The block device requires the stripe size from the config. */
-	if (enable_blkdev) {
-		if (card->config_valid)
-			set_capacity(card->gendisk, card->size8 >> 9);
-		else
-			set_capacity(card->gendisk, 0);
-		err = device_add_disk(CARD_TO_DEV(card), card->gendisk, NULL);
-		if (err == 0)
-			card->bdev_attached = 1;
-	}
-
-	mutex_unlock(&card->dev_lock);
-
-	if (err)
-		blk_cleanup_disk(card->gendisk);
-
-	return err;
-}
-
-void rsxx_detach_dev(struct rsxx_cardinfo *card)
-{
-	mutex_lock(&card->dev_lock);
-
-	if (card->bdev_attached) {
-		del_gendisk(card->gendisk);
-		card->bdev_attached = 0;
-	}
-
-	mutex_unlock(&card->dev_lock);
-}
-
-int rsxx_setup_dev(struct rsxx_cardinfo *card)
-{
-	unsigned short blk_size;
-
-	mutex_init(&card->dev_lock);
-
-	if (!enable_blkdev)
-		return 0;
-
-	card->major = register_blkdev(0, DRIVER_NAME);
-	if (card->major < 0) {
-		dev_err(CARD_TO_DEV(card), "Failed to get major number\n");
-		return -ENOMEM;
-	}
-
-	card->gendisk = blk_alloc_disk(blkdev_minors);
-	if (!card->gendisk) {
-		dev_err(CARD_TO_DEV(card), "Failed disk alloc\n");
-		unregister_blkdev(card->major, DRIVER_NAME);
-		return -ENOMEM;
-	}
-
-	if (card->config_valid) {
-		blk_size = card->config.data.block_size;
-		blk_queue_dma_alignment(card->gendisk->queue, blk_size - 1);
-		blk_queue_logical_block_size(card->gendisk->queue, blk_size);
-	}
-
-	blk_queue_max_hw_sectors(card->gendisk->queue, blkdev_max_hw_sectors);
-	blk_queue_physical_block_size(card->gendisk->queue, RSXX_HW_BLK_SIZE);
-
-	blk_queue_flag_set(QUEUE_FLAG_NONROT, card->gendisk->queue);
-	blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, card->gendisk->queue);
-	if (rsxx_discard_supported(card)) {
-		blk_queue_flag_set(QUEUE_FLAG_DISCARD, card->gendisk->queue);
-		blk_queue_max_discard_sectors(card->gendisk->queue,
-						RSXX_HW_BLK_SIZE >> 9);
-		card->gendisk->queue->limits.discard_granularity =
-			RSXX_HW_BLK_SIZE;
-		card->gendisk->queue->limits.discard_alignment =
-			RSXX_HW_BLK_SIZE;
-	}
-
-	snprintf(card->gendisk->disk_name, sizeof(card->gendisk->disk_name),
-		 "rsxx%d", card->disk_id);
-	card->gendisk->major = card->major;
-	card->gendisk->minors = blkdev_minors;
-	card->gendisk->fops = &rsxx_fops;
-	card->gendisk->private_data = card;
-
-	return 0;
-}
-
-void rsxx_destroy_dev(struct rsxx_cardinfo *card)
-{
-	if (!enable_blkdev)
-		return;
-
-	blk_cleanup_disk(card->gendisk);
-	card->gendisk = NULL;
-	unregister_blkdev(card->major, DRIVER_NAME);
-}
-
-int rsxx_dev_init(void)
-{
-	bio_meta_pool = KMEM_CACHE(rsxx_bio_meta, SLAB_HWCACHE_ALIGN);
-	if (!bio_meta_pool)
-		return -ENOMEM;
-
-	return 0;
-}
-
-void rsxx_dev_cleanup(void)
-{
-	kmem_cache_destroy(bio_meta_pool);
-}
-
-