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hw/scsi/spapr_vscsi: Introduce req_iu() helper 

Introduce the req_iu() helper which returns a pointer to
the viosrp_iu union held in the vscsi_req structure.
This simplifies the next patch.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200305121253.19078-5-philmd@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Philippe Mathieu-Daudé 2020-03-05 13:12:50 +01:00 committed by David Gibson
parent 06109ab34e
commit 81e705494f
1 changed files with 23 additions and 16 deletions
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39
hw/scsi/spapr_vscsi.c
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@ -97,6 +97,11 @@ typedef struct {
vscsi_req reqs[VSCSI_REQ_LIMIT];
} VSCSIState;
static union viosrp_iu *req_iu(vscsi_req *req)
{
return &req->iu;
}
static struct vscsi_req *vscsi_get_req(VSCSIState *s)
{
vscsi_req *req;
@ -121,7 +126,7 @@ static struct vscsi_req *vscsi_find_req(VSCSIState *s, uint64_t srp_tag)
for (i = 0; i < VSCSI_REQ_LIMIT; i++) {
req = &s->reqs[i];
if (req->iu.srp.cmd.tag == srp_tag) {
if (req_iu(req)->srp.cmd.tag == srp_tag) {
return req;
}
}
@ -188,7 +193,7 @@ static int vscsi_send_iu(VSCSIState *s, vscsi_req *req,
req->crq.s.reserved = 0x00;
req->crq.s.timeout = cpu_to_be16(0x0000);
req->crq.s.IU_length = cpu_to_be16(length);
req->crq.s.IU_data_ptr = req->iu.srp.rsp.tag; /* right byte order */
req->crq.s.IU_data_ptr = req_iu(req)->srp.rsp.tag; /* right byte order */
if (rc == 0) {
req->crq.s.status = VIOSRP_OK;
@ -224,7 +229,7 @@ static void vscsi_makeup_sense(VSCSIState *s, vscsi_req *req,
static int vscsi_send_rsp(VSCSIState *s, vscsi_req *req,
uint8_t status, int32_t res_in, int32_t res_out)
{
union viosrp_iu *iu = &req->iu;
union viosrp_iu *iu = req_iu(req);
uint64_t tag = iu->srp.rsp.tag;
int total_len = sizeof(iu->srp.rsp);
uint8_t sol_not = iu->srp.cmd.sol_not;
@ -285,7 +290,7 @@ static int vscsi_fetch_desc(VSCSIState *s, struct vscsi_req *req,
unsigned n, unsigned buf_offset,
struct srp_direct_buf *ret)
{
struct srp_cmd *cmd = &req->iu.srp.cmd;
struct srp_cmd *cmd = &req_iu(req)->srp.cmd;
switch (req->dma_fmt) {
case SRP_NO_DATA_DESC: {
@ -473,7 +478,7 @@ static int data_out_desc_size(struct srp_cmd *cmd)
static int vscsi_preprocess_desc(vscsi_req *req)
{
struct srp_cmd *cmd = &req->iu.srp.cmd;
struct srp_cmd *cmd = &req_iu(req)->srp.cmd;
req->cdb_offset = cmd->add_cdb_len & ~3;
@ -655,7 +660,7 @@ static void *vscsi_load_request(QEMUFile *f, SCSIRequest *sreq)
static void vscsi_process_login(VSCSIState *s, vscsi_req *req)
{
union viosrp_iu *iu = &req->iu;
union viosrp_iu *iu = req_iu(req);
struct srp_login_rsp *rsp = &iu->srp.login_rsp;
uint64_t tag = iu->srp.rsp.tag;
@ -681,7 +686,7 @@ static void vscsi_process_login(VSCSIState *s, vscsi_req *req)
static void vscsi_inquiry_no_target(VSCSIState *s, vscsi_req *req)
{
uint8_t *cdb = req->iu.srp.cmd.cdb;
uint8_t *cdb = req_iu(req)->srp.cmd.cdb;
uint8_t resp_data[36];
int rc, len, alen;
@ -770,7 +775,7 @@ static void vscsi_report_luns(VSCSIState *s, vscsi_req *req)
static int vscsi_queue_cmd(VSCSIState *s, vscsi_req *req)
{
union srp_iu *srp = &req->iu.srp;
union srp_iu *srp = &req_iu(req)->srp;
SCSIDevice *sdev;
int n, lun;
@ -821,7 +826,7 @@ static int vscsi_queue_cmd(VSCSIState *s, vscsi_req *req)
static int vscsi_process_tsk_mgmt(VSCSIState *s, vscsi_req *req)
{
union viosrp_iu *iu = &req->iu;
union viosrp_iu *iu = req_iu(req);
vscsi_req *tmpreq;
int i, lun = 0, resp = SRP_TSK_MGMT_COMPLETE;
SCSIDevice *d;
@ -831,7 +836,8 @@ static int vscsi_process_tsk_mgmt(VSCSIState *s, vscsi_req *req)
fprintf(stderr, "vscsi_process_tsk_mgmt %02x\n",
iu->srp.tsk_mgmt.tsk_mgmt_func);
d = vscsi_device_find(&s->bus, be64_to_cpu(req->iu.srp.tsk_mgmt.lun), &lun);
d = vscsi_device_find(&s->bus,
be64_to_cpu(req_iu(req)->srp.tsk_mgmt.lun), &lun);
if (!d) {
resp = SRP_TSK_MGMT_FIELDS_INVALID;
} else {
@ -842,7 +848,7 @@ static int vscsi_process_tsk_mgmt(VSCSIState *s, vscsi_req *req)
break;
}
tmpreq = vscsi_find_req(s, req->iu.srp.tsk_mgmt.task_tag);
tmpreq = vscsi_find_req(s, req_iu(req)->srp.tsk_mgmt.task_tag);
if (tmpreq && tmpreq->sreq) {
assert(tmpreq->sreq->hba_private);
scsi_req_cancel(tmpreq->sreq);
@ -867,7 +873,8 @@ static int vscsi_process_tsk_mgmt(VSCSIState *s, vscsi_req *req)
for (i = 0; i < VSCSI_REQ_LIMIT; i++) {
tmpreq = &s->reqs[i];
if (tmpreq->iu.srp.cmd.lun != req->iu.srp.tsk_mgmt.lun) {
if (req_iu(tmpreq)->srp.cmd.lun
!= req_iu(req)->srp.tsk_mgmt.lun) {
continue;
}
if (!tmpreq->active || !tmpreq->sreq) {
@ -911,7 +918,7 @@ static int vscsi_process_tsk_mgmt(VSCSIState *s, vscsi_req *req)
static int vscsi_handle_srp_req(VSCSIState *s, vscsi_req *req)
{
union srp_iu *srp = &req->iu.srp;
union srp_iu *srp = &req_iu(req)->srp;
int done = 1;
uint8_t opcode = srp->rsp.opcode;
@ -948,7 +955,7 @@ static int vscsi_send_adapter_info(VSCSIState *s, vscsi_req *req)
struct mad_adapter_info_data info;
int rc;
sinfo = &req->iu.mad.adapter_info;
sinfo = &req_iu(req)->mad.adapter_info;
#if 0 /* What for ? */
rc = spapr_vio_dma_read(&s->vdev, be64_to_cpu(sinfo->buffer),
@ -984,7 +991,7 @@ static int vscsi_send_capabilities(VSCSIState *s, vscsi_req *req)
uint64_t buffer;
int rc;
vcap = &req->iu.mad.capabilities;
vcap = &req_iu(req)->mad.capabilities;
req_len = len = be16_to_cpu(vcap->common.length);
buffer = be64_to_cpu(vcap->buffer);
if (len > sizeof(cap)) {
@ -1029,7 +1036,7 @@ static int vscsi_send_capabilities(VSCSIState *s, vscsi_req *req)
static int vscsi_handle_mad_req(VSCSIState *s, vscsi_req *req)
{
union mad_iu *mad = &req->iu.mad;
union mad_iu *mad = &req_iu(req)->mad;
bool request_handled = false;
uint64_t retlen = 0;