[SCSI] lpfc: NPIV: split ports

The driver is reorganized to separate the handling of the adapter from
the handling of the FC port. Adapter handling includes submissions of
command requests, receiving responses, and managing adapter resources.
The FC port includes the discovery engine, login handling, and the
mapping of a Scsi_Host on the "port".  Although not a large functional
change, as it touches core structures and functions, resulting in a
large text delta.

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

1 files changed, 29 insertions, 2 deletions

diff --git a/drivers/scsi/lpfc/lpfc_mem.c b/drivers/scsi/lpfc/lpfc_mem.c
index ec3bbbde6f7..3aa1dff1544 100644
--- a/drivers/scsi/lpfc/lpfc_mem.c
+++ b/drivers/scsi/lpfc/lpfc_mem.c
@@ -1,7 +1,7 @@
 /*******************************************************************
  * This file is part of the Emulex Linux Device Driver for         *
  * Fibre Channel Host Bus Adapters.                                *
- * Copyright (C) 2004-2005 Emulex.  All rights reserved.           *
+ * Copyright (C) 2004-2006 Emulex.  All rights reserved.           *
  * EMULEX and SLI are trademarks of Emulex.                        *
  * www.emulex.com                                                  *
  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
@@ -38,6 +38,8 @@
 #define LPFC_MBUF_POOL_SIZE     64      /* max elements in MBUF safety pool */
 #define LPFC_MEM_POOL_SIZE      64      /* max elem in non-DMA safety pool */
 
+
+
 int
 lpfc_mem_alloc(struct lpfc_hba * phba)
 {
@@ -84,6 +86,7 @@ lpfc_mem_alloc(struct lpfc_hba * phba)
 
  fail_free_mbox_pool:
 	mempool_destroy(phba->mbox_mem_pool);
+	phba->mbox_mem_pool = NULL;
  fail_free_mbuf_pool:
 	while (i--)
 		pci_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt,
@@ -91,8 +94,10 @@ lpfc_mem_alloc(struct lpfc_hba * phba)
 	kfree(pool->elements);
  fail_free_lpfc_mbuf_pool:
 	pci_pool_destroy(phba->lpfc_mbuf_pool);
+	phba->lpfc_mbuf_pool = NULL;
  fail_free_dma_buf_pool:
 	pci_pool_destroy(phba->lpfc_scsi_dma_buf_pool);
+	phba->lpfc_scsi_dma_buf_pool = NULL;
  fail:
 	return -ENOMEM;
 }
@@ -106,6 +111,7 @@ lpfc_mem_free(struct lpfc_hba * phba)
 	struct lpfc_dmabuf   *mp;
 	int i;
 
+	spin_lock_irq(&phba->hbalock);
 	list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq, list) {
 		mp = (struct lpfc_dmabuf *) (mbox->context1);
 		if (mp) {
@@ -117,6 +123,7 @@ lpfc_mem_free(struct lpfc_hba * phba)
 	}
 
 	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);
@@ -132,12 +139,18 @@ lpfc_mem_free(struct lpfc_hba * phba)
 		pci_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt,
 						 pool->elements[i].phys);
 	kfree(pool->elements);
+
 	mempool_destroy(phba->nlp_mem_pool);
 	mempool_destroy(phba->mbox_mem_pool);
 
 	pci_pool_destroy(phba->lpfc_scsi_dma_buf_pool);
 	pci_pool_destroy(phba->lpfc_mbuf_pool);
 
+	phba->nlp_mem_pool = NULL;
+	phba->mbox_mem_pool = NULL;
+	phba->lpfc_scsi_dma_buf_pool = NULL;
+	phba->lpfc_mbuf_pool = NULL;
+
 	/* Free the iocb lookup array */
 	kfree(psli->iocbq_lookup);
 	psli->iocbq_lookup = NULL;
@@ -148,20 +161,23 @@ void *
 lpfc_mbuf_alloc(struct lpfc_hba *phba, int mem_flags, dma_addr_t *handle)
 {
 	struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool;
+	unsigned long iflags;
 	void *ret;
 
 	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) {
 		pool->current_count--;
 		ret = pool->elements[pool->current_count].virt;
 		*handle = pool->elements[pool->current_count].phys;
 	}
+	spin_unlock_irqrestore(&phba->hbalock, iflags);
 	return ret;
 }
 
 void
-lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma)
+__lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma)
 {
 	struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool;
 
@@ -174,3 +190,14 @@ lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma)
 	}
 	return;
 }
+
+void
+lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma)
+{
+	unsigned long iflags;
+
+	spin_lock_irqsave(&phba->hbalock, iflags);
+	__lpfc_mbuf_free(phba, virt, dma);
+	spin_unlock_irqrestore(&phba->hbalock, iflags);
+	return;
+}