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authorLinus Torvalds <torvalds@linux-foundation.org>2014-12-11 23:20:31 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2014-12-11 23:20:31 +0300
commit6b9e2cea428cf7af93a84bcb865e478d8bf1c165 (patch)
tree11be387e37129fce0c4c111803df1a2e56637b60 /drivers/scsi/virtio_scsi.c
parent14ba9a2e4bacc6f5a0dbe0de5390daedd544508f (diff)
parentf01a2a811ae04124fc9382925038fcbbd2f0b7c8 (diff)
downloadlinux-6b9e2cea428cf7af93a84bcb865e478d8bf1c165.tar.xz
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull virtio updates from Michael Tsirkin: "virtio: virtio 1.0 support, misc patches This adds a lot of infrastructure for virtio 1.0 support. Notable missing pieces: virtio pci, virtio balloon (needs spec extension), vhost scsi. Plus, there are some minor fixes in a couple of places. Note: some net drivers are affected by these patches. David said he's fine with merging these patches through my tree. Rusty's on vacation, he acked using my tree for these, too" * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (70 commits) virtio_ccw: finalize_features error handling virtio_ccw: future-proof finalize_features virtio_pci: rename virtio_pci -> virtio_pci_common virtio_pci: update file descriptions and copyright virtio_pci: split out legacy device support virtio_pci: setup config vector indirectly virtio_pci: setup vqs indirectly virtio_pci: delete vqs indirectly virtio_pci: use priv for vq notification virtio_pci: free up vq->priv virtio_pci: fix coding style for structs virtio_pci: add isr field virtio: drop legacy_only driver flag virtio_balloon: drop legacy_only driver flag virtio_ccw: rev 1 devices set VIRTIO_F_VERSION_1 virtio: allow finalize_features to fail virtio_ccw: legacy: don't negotiate rev 1/features virtio: add API to detect legacy devices virtio_console: fix sparse warnings vhost: remove unnecessary forward declarations in vhost.h ...
Diffstat (limited to 'drivers/scsi/virtio_scsi.c')
-rw-r--r--drivers/scsi/virtio_scsi.c50
1 files changed, 31 insertions, 19 deletions
diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c
index 22e70126425b..c52bb5dfaedb 100644
--- a/drivers/scsi/virtio_scsi.c
+++ b/drivers/scsi/virtio_scsi.c
@@ -158,7 +158,7 @@ static void virtscsi_complete_cmd(struct virtio_scsi *vscsi, void *buf)
sc, resp->response, resp->status, resp->sense_len);
sc->result = resp->status;
- virtscsi_compute_resid(sc, resp->resid);
+ virtscsi_compute_resid(sc, virtio32_to_cpu(vscsi->vdev, resp->resid));
switch (resp->response) {
case VIRTIO_SCSI_S_OK:
set_host_byte(sc, DID_OK);
@@ -196,10 +196,13 @@ static void virtscsi_complete_cmd(struct virtio_scsi *vscsi, void *buf)
break;
}
- WARN_ON(resp->sense_len > VIRTIO_SCSI_SENSE_SIZE);
+ WARN_ON(virtio32_to_cpu(vscsi->vdev, resp->sense_len) >
+ VIRTIO_SCSI_SENSE_SIZE);
if (sc->sense_buffer) {
memcpy(sc->sense_buffer, resp->sense,
- min_t(u32, resp->sense_len, VIRTIO_SCSI_SENSE_SIZE));
+ min_t(u32,
+ virtio32_to_cpu(vscsi->vdev, resp->sense_len),
+ VIRTIO_SCSI_SENSE_SIZE));
if (resp->sense_len)
set_driver_byte(sc, DRIVER_SENSE);
}
@@ -323,7 +326,7 @@ static void virtscsi_handle_transport_reset(struct virtio_scsi *vscsi,
unsigned int target = event->lun[1];
unsigned int lun = (event->lun[2] << 8) | event->lun[3];
- switch (event->reason) {
+ switch (virtio32_to_cpu(vscsi->vdev, event->reason)) {
case VIRTIO_SCSI_EVT_RESET_RESCAN:
scsi_add_device(shost, 0, target, lun);
break;
@@ -349,8 +352,8 @@ static void virtscsi_handle_param_change(struct virtio_scsi *vscsi,
struct Scsi_Host *shost = virtio_scsi_host(vscsi->vdev);
unsigned int target = event->lun[1];
unsigned int lun = (event->lun[2] << 8) | event->lun[3];
- u8 asc = event->reason & 255;
- u8 ascq = event->reason >> 8;
+ u8 asc = virtio32_to_cpu(vscsi->vdev, event->reason) & 255;
+ u8 ascq = virtio32_to_cpu(vscsi->vdev, event->reason) >> 8;
sdev = scsi_device_lookup(shost, 0, target, lun);
if (!sdev) {
@@ -374,12 +377,14 @@ static void virtscsi_handle_event(struct work_struct *work)
struct virtio_scsi *vscsi = event_node->vscsi;
struct virtio_scsi_event *event = &event_node->event;
- if (event->event & VIRTIO_SCSI_T_EVENTS_MISSED) {
- event->event &= ~VIRTIO_SCSI_T_EVENTS_MISSED;
+ if (event->event &
+ cpu_to_virtio32(vscsi->vdev, VIRTIO_SCSI_T_EVENTS_MISSED)) {
+ event->event &= ~cpu_to_virtio32(vscsi->vdev,
+ VIRTIO_SCSI_T_EVENTS_MISSED);
scsi_scan_host(virtio_scsi_host(vscsi->vdev));
}
- switch (event->event) {
+ switch (virtio32_to_cpu(vscsi->vdev, event->event)) {
case VIRTIO_SCSI_T_NO_EVENT:
break;
case VIRTIO_SCSI_T_TRANSPORT_RESET:
@@ -482,26 +487,28 @@ static int virtscsi_kick_cmd(struct virtio_scsi_vq *vq,
return err;
}
-static void virtio_scsi_init_hdr(struct virtio_scsi_cmd_req *cmd,
+static void virtio_scsi_init_hdr(struct virtio_device *vdev,
+ struct virtio_scsi_cmd_req *cmd,
struct scsi_cmnd *sc)
{
cmd->lun[0] = 1;
cmd->lun[1] = sc->device->id;
cmd->lun[2] = (sc->device->lun >> 8) | 0x40;
cmd->lun[3] = sc->device->lun & 0xff;
- cmd->tag = (unsigned long)sc;
+ cmd->tag = cpu_to_virtio64(vdev, (unsigned long)sc);
cmd->task_attr = VIRTIO_SCSI_S_SIMPLE;
cmd->prio = 0;
cmd->crn = 0;
}
-static void virtio_scsi_init_hdr_pi(struct virtio_scsi_cmd_req_pi *cmd_pi,
+static void virtio_scsi_init_hdr_pi(struct virtio_device *vdev,
+ struct virtio_scsi_cmd_req_pi *cmd_pi,
struct scsi_cmnd *sc)
{
struct request *rq = sc->request;
struct blk_integrity *bi;
- virtio_scsi_init_hdr((struct virtio_scsi_cmd_req *)cmd_pi, sc);
+ virtio_scsi_init_hdr(vdev, (struct virtio_scsi_cmd_req *)cmd_pi, sc);
if (!rq || !scsi_prot_sg_count(sc))
return;
@@ -509,9 +516,13 @@ static void virtio_scsi_init_hdr_pi(struct virtio_scsi_cmd_req_pi *cmd_pi,
bi = blk_get_integrity(rq->rq_disk);
if (sc->sc_data_direction == DMA_TO_DEVICE)
- cmd_pi->pi_bytesout = blk_rq_sectors(rq) * bi->tuple_size;
+ cmd_pi->pi_bytesout = cpu_to_virtio32(vdev,
+ blk_rq_sectors(rq) *
+ bi->tuple_size);
else if (sc->sc_data_direction == DMA_FROM_DEVICE)
- cmd_pi->pi_bytesin = blk_rq_sectors(rq) * bi->tuple_size;
+ cmd_pi->pi_bytesin = cpu_to_virtio32(vdev,
+ blk_rq_sectors(rq) *
+ bi->tuple_size);
}
static int virtscsi_queuecommand(struct virtio_scsi *vscsi,
@@ -536,11 +547,11 @@ static int virtscsi_queuecommand(struct virtio_scsi *vscsi,
BUG_ON(sc->cmd_len > VIRTIO_SCSI_CDB_SIZE);
if (virtio_has_feature(vscsi->vdev, VIRTIO_SCSI_F_T10_PI)) {
- virtio_scsi_init_hdr_pi(&cmd->req.cmd_pi, sc);
+ virtio_scsi_init_hdr_pi(vscsi->vdev, &cmd->req.cmd_pi, sc);
memcpy(cmd->req.cmd_pi.cdb, sc->cmnd, sc->cmd_len);
req_size = sizeof(cmd->req.cmd_pi);
} else {
- virtio_scsi_init_hdr(&cmd->req.cmd, sc);
+ virtio_scsi_init_hdr(vscsi->vdev, &cmd->req.cmd, sc);
memcpy(cmd->req.cmd.cdb, sc->cmnd, sc->cmd_len);
req_size = sizeof(cmd->req.cmd);
}
@@ -669,7 +680,8 @@ static int virtscsi_device_reset(struct scsi_cmnd *sc)
cmd->sc = sc;
cmd->req.tmf = (struct virtio_scsi_ctrl_tmf_req){
.type = VIRTIO_SCSI_T_TMF,
- .subtype = VIRTIO_SCSI_T_TMF_LOGICAL_UNIT_RESET,
+ .subtype = cpu_to_virtio32(vscsi->vdev,
+ VIRTIO_SCSI_T_TMF_LOGICAL_UNIT_RESET),
.lun[0] = 1,
.lun[1] = sc->device->id,
.lun[2] = (sc->device->lun >> 8) | 0x40,
@@ -710,7 +722,7 @@ static int virtscsi_abort(struct scsi_cmnd *sc)
.lun[1] = sc->device->id,
.lun[2] = (sc->device->lun >> 8) | 0x40,
.lun[3] = sc->device->lun & 0xff,
- .tag = (unsigned long)sc,
+ .tag = cpu_to_virtio64(vscsi->vdev, (unsigned long)sc),
};
return virtscsi_tmf(vscsi, cmd);
}