[SCSI] lpfc: NPIV: add NPIV support on top of SLI-3

NPIV support is added to the driver.  It utilizes the interfaces of
the fc transport for the creation and deletion of vports. Within the
driver, a new Scsi_Host is created for each NPIV instance, and is
paired with a new instance of a FC port.  This allows N FC Port
elements to share a single Adapter.

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

1 files changed, 41 insertions, 5 deletions

diff --git a/drivers/scsi/lpfc/lpfc_mem.c b/drivers/scsi/lpfc/lpfc_mem.c
index 435dc2ec9357..6598e89627df 100644
--- a/drivers/scsi/lpfc/lpfc_mem.c
+++ b/drivers/scsi/lpfc/lpfc_mem.c
@@ -44,6 +44,7 @@ int
 lpfc_mem_alloc(struct lpfc_hba * phba)
 {
         struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool;
+        int longs;
         int i;
 
         phba->lpfc_scsi_dma_buf_pool = pci_pool_create("lpfc_scsi_dma_buf_pool",
@@ -87,8 +88,15 @@ lpfc_mem_alloc(struct lpfc_hba * phba)
         if (!phba->lpfc_hbq_pool)
                 goto fail_free_nlp_mem_pool;
 
+        longs = (phba->max_vpi + BITS_PER_LONG - 1) / BITS_PER_LONG;
+        phba->vpi_bmask = kzalloc(longs * sizeof(unsigned long), GFP_KERNEL);
+        if (!phba->vpi_bmask)
+                goto fail_free_hbq_pool;
+
         return 0;
 
+ fail_free_hbq_pool:
+        lpfc_sli_hbqbuf_free_all(phba);
  fail_free_nlp_mem_pool:
         mempool_destroy(phba->nlp_mem_pool);
         phba->nlp_mem_pool = NULL;
@@ -119,9 +127,9 @@ lpfc_mem_free(struct lpfc_hba * phba)
         struct lpfc_dmabuf   *mp;
         int i;
 
+        kfree(phba->vpi_bmask);
         lpfc_sli_hbqbuf_free_all(phba);
 
-        spin_lock_irq(&phba->hbalock);
         list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq, list) {
                 mp = (struct lpfc_dmabuf *) (mbox->context1);
                 if (mp) {
@@ -131,9 +139,17 @@ lpfc_mem_free(struct lpfc_hba * phba)
                 list_del(&mbox->list);
                 mempool_free(mbox, phba->mbox_mem_pool);
         }
+        list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq_cmpl, list) {
+                mp = (struct lpfc_dmabuf *) (mbox->context1);
+                if (mp) {
+                        lpfc_mbuf_free(phba, mp->virt, mp->phys);
+                        kfree(mp);
+                }
+                list_del(&mbox->list);
+                mempool_free(mbox, phba->mbox_mem_pool);
+        }
 
         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
-        spin_unlock_irq(&phba->hbalock);
         if (psli->mbox_active) {
                 mbox = psli->mbox_active;
                 mp = (struct lpfc_dmabuf *) (mbox->context1);
@@ -163,7 +179,7 @@ lpfc_mem_free(struct lpfc_hba * phba)
         phba->lpfc_scsi_dma_buf_pool = NULL;
         phba->lpfc_mbuf_pool = NULL;
 
-        /* Free the iocb lookup array */
+                                /* Free the iocb lookup array */
         kfree(psli->iocbq_lookup);
         psli->iocbq_lookup = NULL;
 
@@ -179,7 +195,7 @@ lpfc_mbuf_alloc(struct lpfc_hba *phba, int mem_flags, dma_addr_t *handle)
         ret = pci_pool_alloc(phba->lpfc_mbuf_pool, GFP_KERNEL, handle);
 
         spin_lock_irqsave(&phba->hbalock, iflags);
-        if (!ret && ( mem_flags & MEM_PRI) && pool->current_count) {
+        if (!ret && (mem_flags & MEM_PRI) && pool->current_count) {
                 pool->current_count--;
                 ret = pool->elements[pool->current_count].virt;
                 *handle = pool->elements[pool->current_count].phys;
@@ -214,7 +230,6 @@ lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma)
         return;
 }
 
-
 void *
 lpfc_hbq_alloc(struct lpfc_hba *phba, int mem_flags, dma_addr_t *handle)
 {
@@ -230,3 +245,24 @@ lpfc_hbq_free(struct lpfc_hba *phba, void *virt, dma_addr_t dma)
         return;
 }
 
+void
+lpfc_in_buf_free(struct lpfc_hba *phba, struct lpfc_dmabuf *mp)
+{
+        struct hbq_dmabuf *hbq_entry;
+
+        if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
+                hbq_entry = container_of(mp, struct hbq_dmabuf, dbuf);
+                if (hbq_entry->tag == -1) {
+                        lpfc_hbq_free(phba, hbq_entry->dbuf.virt,
+                                      hbq_entry->dbuf.phys);
+                        kfree(hbq_entry);
+                } else {
+                        lpfc_sli_free_hbq(phba, hbq_entry);
+                }
+        } else {
+                lpfc_mbuf_free(phba, mp->virt, mp->phys);
+                kfree(mp);
+        }
+        return;
+}
+