ReqCnt = 0;
ReqCmd = rq_data_dir(fd_request);
ReqBlock = blk_rq_pos(fd_request);
- ReqBuffer = fd_request->buffer;
+ ReqBuffer = bio_data(fd_request->bio);
setup_req_params( drive );
do_fd_action( drive );
goto Enomem;
}
TrackBuffer = DMABuffer + 512;
- PhysDMABuffer = virt_to_phys(DMABuffer);
+ PhysDMABuffer = atari_stram_to_phys(DMABuffer);
PhysTrackBuffer = virt_to_phys(TrackBuffer);
BufferDrive = BufferSide = BufferTrack = -1;
}
if (CT(COMMAND) != FD_READ ||
- raw_cmd->kernel_data == current_req->buffer) {
+ raw_cmd->kernel_data == bio_data(current_req->bio)) {
/* transfer directly from buffer */
cont->done(1);
} else if (CT(COMMAND) == FD_READ) {
raw_cmd->flags &= ~FD_RAW_WRITE;
raw_cmd->flags |= FD_RAW_READ;
COMMAND = FM_MODE(_floppy, FD_READ);
- } else if ((unsigned long)current_req->buffer < MAX_DMA_ADDRESS) {
+ } else if ((unsigned long)bio_data(current_req->bio) < MAX_DMA_ADDRESS) {
unsigned long dma_limit;
int direct, indirect;
*/
max_size = buffer_chain_size();
dma_limit = (MAX_DMA_ADDRESS -
- ((unsigned long)current_req->buffer)) >> 9;
+ ((unsigned long)bio_data(current_req->bio))) >> 9;
if ((unsigned long)max_size > dma_limit)
max_size = dma_limit;
/* 64 kb boundaries */
- if (CROSS_64KB(current_req->buffer, max_size << 9))
+ if (CROSS_64KB(bio_data(current_req->bio), max_size << 9))
max_size = (K_64 -
- ((unsigned long)current_req->buffer) %
+ ((unsigned long)bio_data(current_req->bio)) %
K_64) >> 9;
direct = transfer_size(ssize, max_sector, max_size) - fsector_t;
/*
(DP->read_track & (1 << DRS->probed_format)))))) {
max_size = blk_rq_sectors(current_req);
} else {
- raw_cmd->kernel_data = current_req->buffer;
+ raw_cmd->kernel_data = bio_data(current_req->bio);
raw_cmd->length = current_count_sectors << 9;
if (raw_cmd->length == 0) {
DPRINT("%s: zero dma transfer attempted\n", __func__);
raw_cmd->length = ((raw_cmd->length - 1) | (ssize - 1)) + 1;
raw_cmd->length <<= 9;
if ((raw_cmd->length < current_count_sectors << 9) ||
- (raw_cmd->kernel_data != current_req->buffer &&
+ (raw_cmd->kernel_data != bio_data(current_req->bio) &&
CT(COMMAND) == FD_WRITE &&
(aligned_sector_t + (raw_cmd->length >> 9) > buffer_max ||
aligned_sector_t < buffer_min)) ||
raw_cmd->length <= 0 || current_count_sectors <= 0) {
DPRINT("fractionary current count b=%lx s=%lx\n",
raw_cmd->length, current_count_sectors);
- if (raw_cmd->kernel_data != current_req->buffer)
+ if (raw_cmd->kernel_data != bio_data(current_req->bio))
pr_info("addr=%d, length=%ld\n",
(int)((raw_cmd->kernel_data -
floppy_track_buffer) >> 9),
return 0;
}
- if (raw_cmd->kernel_data != current_req->buffer) {
+ if (raw_cmd->kernel_data != bio_data(current_req->bio)) {
if (raw_cmd->kernel_data < floppy_track_buffer ||
current_count_sectors < 0 ||
raw_cmd->length < 0 ||
int ret;
while (ptr) {
- ret = copy_to_user(param, ptr, sizeof(*ptr));
+ struct floppy_raw_cmd cmd = *ptr;
+ cmd.next = NULL;
+ cmd.kernel_data = NULL;
+ ret = copy_to_user(param, &cmd, sizeof(cmd));
if (ret)
return -EFAULT;
param += sizeof(struct floppy_raw_cmd);
return -ENOMEM;
*rcmd = ptr;
ret = copy_from_user(ptr, param, sizeof(*ptr));
- if (ret)
- return -EFAULT;
ptr->next = NULL;
ptr->buffer_length = 0;
+ ptr->kernel_data = NULL;
+ if (ret)
+ return -EFAULT;
param += sizeof(struct floppy_raw_cmd);
if (ptr->cmd_count > 33)
/* the command may now also take up the space
for (i = 0; i < 16; i++)
ptr->reply[i] = 0;
ptr->resultcode = 0;
- ptr->kernel_data = NULL;
if (ptr->flags & (FD_RAW_READ | FD_RAW_WRITE)) {
if (ptr->length <= 0)
/* The disk structure for the kernel. */
struct gendisk *disk;
+ /* Block layer tags. */
+ struct blk_mq_tag_set tag_set;
+
/* Process context for config space updates */
struct work_struct config_work;
static inline void virtblk_request_done(struct request *req)
{
- struct virtblk_req *vbr = req->special;
+ struct virtblk_req *vbr = blk_mq_rq_to_pdu(req);
int error = virtblk_result(vbr);
if (req->cmd_type == REQ_TYPE_BLOCK_PC) {
if (unlikely(virtqueue_is_broken(vq)))
break;
} while (!virtqueue_enable_cb(vq));
- spin_unlock_irqrestore(&vblk->vq_lock, flags);
/* In case queue is stopped waiting for more buffers. */
if (req_done)
- blk_mq_start_stopped_hw_queues(vblk->disk->queue);
+ blk_mq_start_stopped_hw_queues(vblk->disk->queue, true);
+ spin_unlock_irqrestore(&vblk->vq_lock, flags);
}
static int virtio_queue_rq(struct blk_mq_hw_ctx *hctx, struct request *req)
{
struct virtio_blk *vblk = hctx->queue->queuedata;
- struct virtblk_req *vbr = req->special;
+ struct virtblk_req *vbr = blk_mq_rq_to_pdu(req);
unsigned long flags;
unsigned int num;
const bool last = (req->cmd_flags & REQ_END) != 0;
err = __virtblk_add_req(vblk->vq, vbr, vbr->sg, num);
if (err) {
virtqueue_kick(vblk->vq);
- spin_unlock_irqrestore(&vblk->vq_lock, flags);
blk_mq_stop_hw_queue(hctx);
+ spin_unlock_irqrestore(&vblk->vq_lock, flags);
/* Out of mem doesn't actually happen, since we fall back
* to direct descriptors */
if (err == -ENOMEM || err == -ENOSPC)
__ATTR(cache_type, S_IRUGO|S_IWUSR,
virtblk_cache_type_show, virtblk_cache_type_store);
- static struct blk_mq_ops virtio_mq_ops = {
- .queue_rq = virtio_queue_rq,
- .map_queue = blk_mq_map_queue,
- .alloc_hctx = blk_mq_alloc_single_hw_queue,
- .free_hctx = blk_mq_free_single_hw_queue,
- .complete = virtblk_request_done,
- };
-
- static struct blk_mq_reg virtio_mq_reg = {
- .ops = &virtio_mq_ops,
- .nr_hw_queues = 1,
- .queue_depth = 0, /* Set in virtblk_probe */
- .numa_node = NUMA_NO_NODE,
- .flags = BLK_MQ_F_SHOULD_MERGE,
- };
- module_param_named(queue_depth, virtio_mq_reg.queue_depth, uint, 0444);
-
- static int virtblk_init_vbr(void *data, struct blk_mq_hw_ctx *hctx,
- struct request *rq, unsigned int nr)
+ static int virtblk_init_request(void *data, struct request *rq,
+ unsigned int hctx_idx, unsigned int request_idx,
+ unsigned int numa_node)
{
struct virtio_blk *vblk = data;
- struct virtblk_req *vbr = rq->special;
+ struct virtblk_req *vbr = blk_mq_rq_to_pdu(rq);
sg_init_table(vbr->sg, vblk->sg_elems);
return 0;
}
+ static struct blk_mq_ops virtio_mq_ops = {
+ .queue_rq = virtio_queue_rq,
+ .map_queue = blk_mq_map_queue,
+ .complete = virtblk_request_done,
+ .init_request = virtblk_init_request,
+ };
+
+ static unsigned int virtblk_queue_depth;
+ module_param_named(queue_depth, virtblk_queue_depth, uint, 0444);
+
static int virtblk_probe(struct virtio_device *vdev)
{
struct virtio_blk *vblk;
}
/* Default queue sizing is to fill the ring. */
- if (!virtio_mq_reg.queue_depth) {
- virtio_mq_reg.queue_depth = vblk->vq->num_free;
+ if (!virtblk_queue_depth) {
+ virtblk_queue_depth = vblk->vq->num_free;
/* ... but without indirect descs, we use 2 descs per req */
if (!virtio_has_feature(vdev, VIRTIO_RING_F_INDIRECT_DESC))
- virtio_mq_reg.queue_depth /= 2;
+ virtblk_queue_depth /= 2;
}
- virtio_mq_reg.cmd_size =
+
+ memset(&vblk->tag_set, 0, sizeof(vblk->tag_set));
+ vblk->tag_set.ops = &virtio_mq_ops;
+ vblk->tag_set.nr_hw_queues = 1;
+ vblk->tag_set.queue_depth = virtblk_queue_depth;
+ vblk->tag_set.numa_node = NUMA_NO_NODE;
+ vblk->tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
+ vblk->tag_set.cmd_size =
sizeof(struct virtblk_req) +
sizeof(struct scatterlist) * sg_elems;
+ vblk->tag_set.driver_data = vblk;
- q = vblk->disk->queue = blk_mq_init_queue(&virtio_mq_reg, vblk);
+ err = blk_mq_alloc_tag_set(&vblk->tag_set);
+ if (err)
+ goto out_put_disk;
+
+ q = vblk->disk->queue = blk_mq_init_queue(&vblk->tag_set);
if (!q) {
err = -ENOMEM;
- goto out_put_disk;
+ goto out_free_tags;
}
- blk_mq_init_commands(q, virtblk_init_vbr, vblk);
-
q->queuedata = vblk;
virtblk_name_format("vd", index, vblk->disk->disk_name, DISK_NAME_LEN);
out_del_disk:
del_gendisk(vblk->disk);
blk_cleanup_queue(vblk->disk->queue);
+ out_free_tags:
+ blk_mq_free_tag_set(&vblk->tag_set);
out_put_disk:
put_disk(vblk->disk);
out_free_vq:
del_gendisk(vblk->disk);
blk_cleanup_queue(vblk->disk->queue);
+ blk_mq_free_tag_set(&vblk->tag_set);
+
/* Stop all the virtqueues. */
vdev->config->reset(vdev);
vblk->config_enable = true;
ret = init_vq(vdev->priv);
if (!ret)
- blk_mq_start_stopped_hw_queues(vblk->disk->queue);
+ blk_mq_start_stopped_hw_queues(vblk->disk->queue, true);
return ret;
}
add_timer_randomness(disk->random, 0x100 + disk_devt(disk));
trace_add_disk_randomness(disk_devt(disk), ENTROPY_BITS(&input_pool));
}
+ EXPORT_SYMBOL_GPL(add_disk_randomness);
#endif
/*********************************************************************
ibytes = min_t(size_t, ibytes, have_bytes - reserved);
if (ibytes < min)
ibytes = 0;
- entropy_count = max_t(int, 0,
- entropy_count - (ibytes << (ENTROPY_SHIFT + 3)));
+ if (have_bytes >= ibytes + reserved)
+ entropy_count -= ibytes << (ENTROPY_SHIFT + 3);
+ else
+ entropy_count = reserved << (ENTROPY_SHIFT + 3);
+
if (cmpxchg(&r->entropy_count, orig, entropy_count) != orig)
goto retry;
* flash access anyway.
*/
mutex_lock(&dev->dev_mutex);
- ret = ubiblock_read(dev, req->buffer, sec, len);
+ ret = ubiblock_read(dev, bio_data(req->bio), sec, len);
mutex_unlock(&dev->dev_mutex);
return ret;
* Create one workqueue per volume (per registered block device).
* Rembember workqueues are cheap, they're not threads.
*/
- dev->wq = alloc_workqueue(gd->disk_name, 0, 0);
+ dev->wq = alloc_workqueue("%s", 0, 0, gd->disk_name);
if (!dev->wq)
goto out_free_queue;
INIT_WORK(&dev->work, ubiblock_do_work);
* lock such that the kblockd_schedule_work() call happens
* before blk_cleanup_queue() finishes.
*/
+ cmd->result = 0;
spin_lock_irqsave(q->queue_lock, flags);
blk_requeue_request(q, cmd->request);
- kblockd_schedule_work(q, &device->requeue_work);
+ kblockd_schedule_work(&device->requeue_work);
spin_unlock_irqrestore(q->queue_lock, flags);
}
return BLKPREP_DEFER;
}
- req->buffer = NULL;
-
/*
* Next, walk the list, and fill in the addresses and sizes of
* each segment.
*/
int scsi_init_io(struct scsi_cmnd *cmd, gfp_t gfp_mask)
{
+ struct scsi_device *sdev = cmd->device;
struct request *rq = cmd->request;
int error = scsi_init_sgtable(rq, &cmd->sdb, gfp_mask);
scsi_release_buffers(cmd);
cmd->request->special = NULL;
scsi_put_command(cmd);
- put_device(&cmd->device->sdev_gendev);
+ put_device(&sdev->sdev_gendev);
return error;
}
EXPORT_SYMBOL(scsi_init_io);
BUG_ON(blk_rq_bytes(req));
memset(&cmd->sdb, 0, sizeof(cmd->sdb));
- req->buffer = NULL;
}
cmd->cmd_len = req->cmd_len;
struct scsi_cmnd *cmd = req->special;
scsi_release_buffers(cmd);
scsi_put_command(cmd);
- put_device(&cmd->device->sdev_gendev);
+ put_device(&sdev->sdev_gendev);
req->special = NULL;
}
break;
projects / karo-tx-linux.git / commitdiff