diff options
| -rw-r--r-- | arch/powerpc/configs/guest.config | 1 | ||||
| -rw-r--r-- | drivers/block/Kconfig | 10 | ||||
| -rw-r--r-- | drivers/block/virtio_blk.c | 115 |
3 files changed, 1 insertions, 125 deletions
diff --git a/arch/powerpc/configs/guest.config b/arch/powerpc/configs/guest.config index 8b8cd18ecd7c..209f58515d88 100644 --- a/arch/powerpc/configs/guest.config +++ b/arch/powerpc/configs/guest.config @@ -1,5 +1,4 @@ CONFIG_VIRTIO_BLK=y -CONFIG_VIRTIO_BLK_SCSI=y CONFIG_SCSI_VIRTIO=y CONFIG_VIRTIO_NET=y CONFIG_NET_FAILOVER=y diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig index 1bb8ec575352..025b1b77b11a 100644 --- a/drivers/block/Kconfig +++ b/drivers/block/Kconfig @@ -432,16 +432,6 @@ config VIRTIO_BLK This is the virtual block driver for virtio. It can be used with QEMU based VMMs (like KVM or Xen). Say Y or M. -config VIRTIO_BLK_SCSI - bool "SCSI passthrough request for the Virtio block driver" - depends on VIRTIO_BLK - select BLK_SCSI_REQUEST - ---help--- - Enable support for SCSI passthrough (e.g. the SG_IO ioctl) on - virtio-blk devices. This is only supported for the legacy - virtio protocol and not enabled by default by any hypervisor. - You probably want to use virtio-scsi instead. - config BLK_DEV_RBD tristate "Rados block device (RBD)" depends on INET && BLOCK diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index 7ffd719d89de..54158766334b 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -11,7 +11,6 @@ #include <linux/virtio_blk.h> #include <linux/scatterlist.h> #include <linux/string_helpers.h> -#include <scsi/scsi_cmnd.h> #include <linux/idr.h> #include <linux/blk-mq.h> #include <linux/blk-mq-virtio.h> @@ -56,11 +55,6 @@ struct virtio_blk { }; struct virtblk_req { -#ifdef CONFIG_VIRTIO_BLK_SCSI - struct scsi_request sreq; /* for SCSI passthrough, must be first */ - u8 sense[SCSI_SENSE_BUFFERSIZE]; - struct virtio_scsi_inhdr in_hdr; -#endif struct virtio_blk_outhdr out_hdr; u8 status; struct scatterlist sg[]; @@ -78,80 +72,6 @@ static inline blk_status_t virtblk_result(struct virtblk_req *vbr) } } -/* - * If this is a packet command we need a couple of additional headers. Behind - * the normal outhdr we put a segment with the scsi command block, and before - * the normal inhdr we put the sense data and the inhdr with additional status - * information. - */ -#ifdef CONFIG_VIRTIO_BLK_SCSI -static int virtblk_add_req_scsi(struct virtqueue *vq, struct virtblk_req *vbr, - struct scatterlist *data_sg, bool have_data) -{ - struct scatterlist hdr, status, cmd, sense, inhdr, *sgs[6]; - unsigned int num_out = 0, num_in = 0; - - sg_init_one(&hdr, &vbr->out_hdr, sizeof(vbr->out_hdr)); - sgs[num_out++] = &hdr; - sg_init_one(&cmd, vbr->sreq.cmd, vbr->sreq.cmd_len); - sgs[num_out++] = &cmd; - - if (have_data) { - if (vbr->out_hdr.type & cpu_to_virtio32(vq->vdev, VIRTIO_BLK_T_OUT)) - sgs[num_out++] = data_sg; - else - sgs[num_out + num_in++] = data_sg; - } - - sg_init_one(&sense, vbr->sense, SCSI_SENSE_BUFFERSIZE); - sgs[num_out + num_in++] = &sense; - sg_init_one(&inhdr, &vbr->in_hdr, sizeof(vbr->in_hdr)); - sgs[num_out + num_in++] = &inhdr; - sg_init_one(&status, &vbr->status, sizeof(vbr->status)); - sgs[num_out + num_in++] = &status; - - return virtqueue_add_sgs(vq, sgs, num_out, num_in, vbr, GFP_ATOMIC); -} - -static inline void virtblk_scsi_request_done(struct request *req) -{ - struct virtblk_req *vbr = blk_mq_rq_to_pdu(req); - struct virtio_blk *vblk = req->q->queuedata; - struct scsi_request *sreq = &vbr->sreq; - - sreq->resid_len = virtio32_to_cpu(vblk->vdev, vbr->in_hdr.residual); - sreq->sense_len = virtio32_to_cpu(vblk->vdev, vbr->in_hdr.sense_len); - sreq->result = virtio32_to_cpu(vblk->vdev, vbr->in_hdr.errors); -} - -static int virtblk_ioctl(struct block_device *bdev, fmode_t mode, - unsigned int cmd, unsigned long data) -{ - struct gendisk *disk = bdev->bd_disk; - struct virtio_blk *vblk = disk->private_data; - - /* - * Only allow the generic SCSI ioctls if the host can support it. - */ - if (!virtio_has_feature(vblk->vdev, VIRTIO_BLK_F_SCSI)) - return -ENOTTY; - - return scsi_cmd_blk_ioctl(bdev, mode, cmd, - (void __user *)data); -} -#else -static inline int virtblk_add_req_scsi(struct virtqueue *vq, - struct virtblk_req *vbr, struct scatterlist *data_sg, - bool have_data) -{ - return -EIO; -} -static inline void virtblk_scsi_request_done(struct request *req) -{ -} -#define virtblk_ioctl NULL -#endif /* CONFIG_VIRTIO_BLK_SCSI */ - static int virtblk_add_req(struct virtqueue *vq, struct virtblk_req *vbr, struct scatterlist *data_sg, bool have_data) { @@ -216,13 +136,6 @@ static inline void virtblk_request_done(struct request *req) req->special_vec.bv_offset); } - switch (req_op(req)) { - case REQ_OP_SCSI_IN: - case REQ_OP_SCSI_OUT: - virtblk_scsi_request_done(req); - break; - } - blk_mq_end_request(req, virtblk_result(vbr)); } @@ -299,10 +212,6 @@ static blk_status_t virtio_queue_rq(struct blk_mq_hw_ctx *hctx, type = VIRTIO_BLK_T_WRITE_ZEROES; unmap = !(req->cmd_flags & REQ_NOUNMAP); break; - case REQ_OP_SCSI_IN: - case REQ_OP_SCSI_OUT: - type = VIRTIO_BLK_T_SCSI_CMD; - break; case REQ_OP_DRV_IN: type = VIRTIO_BLK_T_GET_ID; break; @@ -333,10 +242,7 @@ static blk_status_t virtio_queue_rq(struct blk_mq_hw_ctx *hctx, } spin_lock_irqsave(&vblk->vqs[qid].lock, flags); - if (blk_rq_is_scsi(req)) - err = virtblk_add_req_scsi(vblk->vqs[qid].vq, vbr, vbr->sg, num); - else - err = virtblk_add_req(vblk->vqs[qid].vq, vbr, vbr->sg, num); + err = virtblk_add_req(vblk->vqs[qid].vq, vbr, vbr->sg, num); if (err) { virtqueue_kick(vblk->vqs[qid].vq); blk_mq_stop_hw_queue(hctx); @@ -404,7 +310,6 @@ static int virtblk_getgeo(struct block_device *bd, struct hd_geometry *geo) } static const struct block_device_operations virtblk_fops = { - .ioctl = virtblk_ioctl, .owner = THIS_MODULE, .getgeo = virtblk_getgeo, }; @@ -683,9 +588,6 @@ static int virtblk_init_request(struct blk_mq_tag_set *set, struct request *rq, struct virtio_blk *vblk = set->driver_data; struct virtblk_req *vbr = blk_mq_rq_to_pdu(rq); -#ifdef CONFIG_VIRTIO_BLK_SCSI - vbr->sreq.sense = vbr->sense; -#endif sg_init_table(vbr->sg, vblk->sg_elems); return 0; } @@ -698,23 +600,11 @@ static int virtblk_map_queues(struct blk_mq_tag_set *set) vblk->vdev, 0); } -#ifdef CONFIG_VIRTIO_BLK_SCSI -static void virtblk_initialize_rq(struct request *req) -{ - struct virtblk_req *vbr = blk_mq_rq_to_pdu(req); - - scsi_req_init(&vbr->sreq); -} -#endif - static const struct blk_mq_ops virtio_mq_ops = { .queue_rq = virtio_queue_rq, .commit_rqs = virtio_commit_rqs, .complete = virtblk_request_done, .init_request = virtblk_init_request, -#ifdef CONFIG_VIRTIO_BLK_SCSI - .initialize_rq_fn = virtblk_initialize_rq, -#endif .map_queues = virtblk_map_queues, }; @@ -991,9 +881,6 @@ static const struct virtio_device_id id_table[] = { static unsigned int features_legacy[] = { VIRTIO_BLK_F_SEG_MAX, VIRTIO_BLK_F_SIZE_MAX, VIRTIO_BLK_F_GEOMETRY, VIRTIO_BLK_F_RO, VIRTIO_BLK_F_BLK_SIZE, -#ifdef CONFIG_VIRTIO_BLK_SCSI - VIRTIO_BLK_F_SCSI, -#endif VIRTIO_BLK_F_FLUSH, VIRTIO_BLK_F_TOPOLOGY, VIRTIO_BLK_F_CONFIG_WCE, VIRTIO_BLK_F_MQ, VIRTIO_BLK_F_DISCARD, VIRTIO_BLK_F_WRITE_ZEROES, } |