[SCSI] lpfc: hgp/pgp cleanups

From: Christoph Hellwig <hch@lst.de>:

 - rename PGP/HPH to lpfc_pgp/lpfc_hgp
 - use __le32 types for the members to start fixing sparse -Wbitwise
   issues
 - remove lpfc_sli.MBhostaddr, we can always use the pointer from
   SLI2_DESC directly

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

3 files changed, 26 insertions, 46 deletions

diff --git a/drivers/scsi/lpfc/lpfc_hw.h b/drivers/scsi/lpfc/lpfc_hw.h
index fc958a99dadb..3f05b6890214 100644
--- a/drivers/scsi/lpfc/lpfc_hw.h
+++ b/drivers/scsi/lpfc/lpfc_hw.h
@@ -2214,20 +2214,20 @@ typedef union {
  * SLI-2 specific structures
  */
 
-typedef struct {
-        uint32_t cmdPutInx;
-        uint32_t rspGetInx;
-} HGP;
+struct lpfc_hgp {
+        __le32 cmdPutInx;
+        __le32 rspGetInx;
+};
 
-typedef struct {
-        uint32_t cmdGetInx;
-        uint32_t rspPutInx;
-} PGP;
+struct lpfc_pgp {
+        __le32 cmdGetInx;
+        __le32 rspPutInx;
+};
 
 typedef struct _SLI2_DESC {
-        HGP host[MAX_RINGS];
+        struct lpfc_hgp host[MAX_RINGS];
         uint32_t unused1[16];
-        PGP port[MAX_RINGS];
+        struct lpfc_pgp port[MAX_RINGS];
 } SLI2_DESC;
 
 typedef union {
diff --git a/drivers/scsi/lpfc/lpfc_mbox.c b/drivers/scsi/lpfc/lpfc_mbox.c
index 8712a80fe747..73213030c746 100644
--- a/drivers/scsi/lpfc/lpfc_mbox.c
+++ b/drivers/scsi/lpfc/lpfc_mbox.c
@@ -422,7 +422,6 @@ lpfc_config_pcb_setup(struct lpfc_hba * phba)
         uint32_t iocbCnt;
         int i;
 
-        psli->MBhostaddr = (uint32_t *)&phba->slim2p->mbx;
         pcbp->maxRing = (psli->num_rings - 1);
 
         iocbCnt = 0;
@@ -528,7 +527,7 @@ lpfc_config_port(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
         dma_addr_t pdma_addr;
         uint32_t bar_low, bar_high;
         size_t offset;
-        HGP hgp;
+        struct lpfc_hgp hgp;
         void __iomem *to_slim;
 
         memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
@@ -584,9 +583,9 @@ lpfc_config_port(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
         else
                 phba->slim2p->pcb.hgpAddrHigh = 0;
         /* write HGP data to SLIM at the required longword offset */
-        memset(&hgp, 0, sizeof(HGP));
+        memset(&hgp, 0, sizeof(struct lpfc_hgp));
         to_slim = phba->MBslimaddr + (SLIMOFF*sizeof (uint32_t));
-        lpfc_memcpy_to_slim(to_slim, &hgp, sizeof (HGP));
+        lpfc_memcpy_to_slim(to_slim, &hgp, sizeof(struct lpfc_hgp));
 
         /* Setup Port Group ring pointer */
         offset = (uint8_t *)&phba->slim2p->mbx.us.s2.port -
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index 8d14b28c80b9..9493ec1b17e1 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -225,8 +225,7 @@ lpfc_sli_ringtx_get(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
 static IOCB_t *
 lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 {
-        MAILBOX_t *mbox = (MAILBOX_t *)phba->sli.MBhostaddr;
-        PGP *pgp = (PGP *)&mbox->us.s2.port[pring->ringno];
+        struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
         uint32_t  max_cmd_idx = pring->numCiocb;
         IOCB_t *iocb = NULL;
 
@@ -411,9 +410,7 @@ lpfc_sli_resume_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
 static void
 lpfc_sli_turn_on_ring(struct lpfc_hba * phba, int ringno)
 {
-        PGP *pgp =
-                ((PGP *) &
-                 (((MAILBOX_t *)phba->sli.MBhostaddr)->us.s2.port[ringno]));
+        struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[ringno];
 
         /* If the ring is active, flag it */
         if (phba->sli.ring[ringno].cmdringaddr) {
@@ -537,7 +534,7 @@ lpfc_sli_handle_mb_event(struct lpfc_hba * phba)
         /* Get a Mailbox buffer to setup mailbox commands for callback */
         if ((pmb = phba->sli.mbox_active)) {
                 pmbox = &pmb->mb;
-                mbox = (MAILBOX_t *) phba->sli.MBhostaddr;
+                mbox = &phba->slim2p->mbx;
 
                 /* First check out the status word */
                 lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof (uint32_t));
@@ -905,10 +902,10 @@ static int
 lpfc_sli_handle_fast_ring_event(struct lpfc_hba * phba,
                                 struct lpfc_sli_ring * pring, uint32_t mask)
 {
+        struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
         IOCB_t *irsp = NULL;
         struct lpfc_iocbq *cmdiocbq = NULL;
         struct lpfc_iocbq rspiocbq;
-        PGP *pgp;
         uint32_t status;
         uint32_t portRspPut, portRspMax;
         int rc = 1;
@@ -920,10 +917,6 @@ lpfc_sli_handle_fast_ring_event(struct lpfc_hba * phba,
         spin_lock_irqsave(phba->host->host_lock, iflag);
         pring->stats.iocb_event++;
 
-        /* The driver assumes SLI-2 mode */
-        pgp = (PGP *) &((MAILBOX_t *) phba->sli.MBhostaddr)
-                ->us.s2.port[pring->ringno];
-
         /*
          * The next available response entry should never exceed the maximum
          * entries.  If it does, treat it as an adapter hardware error.
@@ -1075,9 +1068,7 @@ lpfc_sli_handle_slow_ring_event(struct lpfc_hba * phba,
         struct lpfc_iocbq *cmdiocbp;
         struct lpfc_iocbq *saveq;
         struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
-        HGP *hgp;
-        PGP *pgp;
-        MAILBOX_t *mbox;
+        struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
         uint8_t iocb_cmd_type;
         lpfc_iocb_type type;
         uint32_t status, free_saveq;
@@ -1089,11 +1080,6 @@ lpfc_sli_handle_slow_ring_event(struct lpfc_hba * phba,
         spin_lock_irqsave(phba->host->host_lock, iflag);
         pring->stats.iocb_event++;
 
-        /* The driver assumes SLI-2 mode */
-        mbox = (MAILBOX_t *) phba->sli.MBhostaddr;
-        pgp = (PGP *) & mbox->us.s2.port[pring->ringno];
-        hgp = (HGP *) & mbox->us.s2.host[pring->ringno];
-
         /*
          * The next available response entry should never exceed the maximum
          * entries.  If it does, treat it as an adapter hardware error.
@@ -1771,7 +1757,6 @@ lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
 int
 lpfc_sli_issue_mbox(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmbox, uint32_t flag)
 {
-        MAILBOX_t *mbox;
         MAILBOX_t *mb;
         struct lpfc_sli *psli;
         uint32_t status, evtctr;
@@ -1901,15 +1886,13 @@ lpfc_sli_issue_mbox(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmbox, uint32_t flag)
         mb->mbxOwner = OWN_CHIP;
 
         if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
-
                 /* First copy command data to host SLIM area */
-                mbox = (MAILBOX_t *) psli->MBhostaddr;
-                lpfc_sli_pcimem_bcopy(mb, mbox, MAILBOX_CMD_SIZE);
+                lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx, MAILBOX_CMD_SIZE);
         } else {
                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
                         /* copy command data into host mbox for cmpl */
-                        mbox = (MAILBOX_t *) psli->MBhostaddr;
-                        lpfc_sli_pcimem_bcopy(mb, mbox, MAILBOX_CMD_SIZE);
+                        lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx,
+                                        MAILBOX_CMD_SIZE);
                 }
 
                 /* First copy mbox command data to HBA SLIM, skip past first
@@ -1946,8 +1929,7 @@ lpfc_sli_issue_mbox(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmbox, uint32_t flag)
                 psli->mbox_active = NULL;
                 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
                         /* First read mbox status word */
-                        mbox = (MAILBOX_t *) psli->MBhostaddr;
-                        word0 = *((volatile uint32_t *)mbox);
+                        word0 = *((volatile uint32_t *)&phba->slim2p->mbx);
                         word0 = le32_to_cpu(word0);
                 } else {
                         /* First read mbox status word */
@@ -1984,8 +1966,8 @@ lpfc_sli_issue_mbox(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmbox, uint32_t flag)
 
                         if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
                                 /* First copy command data */
-                                mbox = (MAILBOX_t *) psli->MBhostaddr;
-                                word0 = *((volatile uint32_t *)mbox);
+                                word0 = *((volatile uint32_t *)
+                                                &phba->slim2p->mbx);
                                 word0 = le32_to_cpu(word0);
                                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
                                         MAILBOX_t *slimmb;
@@ -2009,10 +1991,9 @@ lpfc_sli_issue_mbox(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmbox, uint32_t flag)
                 }
 
                 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
-                        /* First copy command data */
-                        mbox = (MAILBOX_t *) psli->MBhostaddr;
                         /* copy results back to user */
-                        lpfc_sli_pcimem_bcopy(mbox, mb, MAILBOX_CMD_SIZE);
+                        lpfc_sli_pcimem_bcopy(&phba->slim2p->mbx, mb,
+                                        MAILBOX_CMD_SIZE);
                 } else {
                         /* First copy command data */
                         lpfc_memcpy_from_slim(mb, phba->MBslimaddr,