lpfc: add Emulex FC driver version 8.0.28

From: 	James.Smart@Emulex.Com

Modified for kernel import and
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 179 insertions, 0 deletions

diff --git a/drivers/scsi/lpfc/lpfc_mem.c b/drivers/scsi/lpfc/lpfc_mem.c
new file mode 100644
index 0000000..4397e11
--- /dev/null
+++ b/drivers/scsi/lpfc/lpfc_mem.c
@@ -0,0 +1,179 @@
+/*******************************************************************
+ * This file is part of the Emulex Linux Device Driver for         *
+ * Enterprise Fibre Channel Host Bus Adapters.                     *
+ * Refer to the README file included with this package for         *
+ * driver version and adapter support.                             *
+ * Copyright (C) 2004 Emulex Corporation.                          *
+ * www.emulex.com                                                  *
+ *                                                                 *
+ * This program is free software; you can redistribute it and/or   *
+ * modify it under the terms of the GNU General Public License     *
+ * as published by the Free Software Foundation; either version 2  *
+ * of the License, or (at your option) any later version.          *
+ *                                                                 *
+ * This program is distributed in the hope that it will be useful, *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of  *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the   *
+ * GNU General Public License for more details, a copy of which    *
+ * can be found in the file COPYING included with this package.    *
+ *******************************************************************/
+
+/*
+ * $Id: lpfc_mem.c 1.79 2005/04/13 14:25:50EDT sf_support Exp  $
+ */
+
+#include <linux/mempool.h>
+#include <linux/pci.h>
+#include <linux/interrupt.h>
+
+#include "lpfc_hw.h"
+#include "lpfc_sli.h"
+#include "lpfc_disc.h"
+#include "lpfc_scsi.h"
+#include "lpfc.h"
+#include "lpfc_crtn.h"
+
+#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 */
+
+static void *
+lpfc_pool_kmalloc(unsigned int gfp_flags, void *data)
+{
+	return kmalloc((unsigned long)data, gfp_flags);
+}
+
+static void
+lpfc_pool_kfree(void *obj, void *data)
+{
+	kfree(obj);
+}
+
+int
+lpfc_mem_alloc(struct lpfc_hba * phba)
+{
+	struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool;
+	int i;
+
+	phba->lpfc_scsi_dma_buf_pool = pci_pool_create("lpfc_scsi_dma_buf_pool",
+				phba->pcidev, phba->cfg_sg_dma_buf_size, 8, 0);
+	if (!phba->lpfc_scsi_dma_buf_pool)
+		goto fail;
+
+	phba->lpfc_mbuf_pool = pci_pool_create("lpfc_mbuf_pool", phba->pcidev,
+							LPFC_BPL_SIZE, 8,0);
+	if (!phba->lpfc_mbuf_pool)
+		goto fail_free_dma_buf_pool;
+
+	pool->elements = kmalloc(sizeof(struct lpfc_dmabuf) *
+					 LPFC_MBUF_POOL_SIZE, GFP_KERNEL);
+	pool->max_count = 0;
+	pool->current_count = 0;
+	for ( i = 0; i < LPFC_MBUF_POOL_SIZE; i++) {
+		pool->elements[i].virt = pci_pool_alloc(phba->lpfc_mbuf_pool,
+				       GFP_KERNEL, &pool->elements[i].phys);
+		if (!pool->elements[i].virt)
+			goto fail_free_mbuf_pool;
+		pool->max_count++;
+		pool->current_count++;
+	}
+
+	phba->mbox_mem_pool = mempool_create(LPFC_MEM_POOL_SIZE,
+				lpfc_pool_kmalloc, lpfc_pool_kfree,
+				(void *)(unsigned long)sizeof(LPFC_MBOXQ_t));
+	if (!phba->mbox_mem_pool)
+		goto fail_free_mbuf_pool;
+
+	phba->nlp_mem_pool = mempool_create(LPFC_MEM_POOL_SIZE,
+			lpfc_pool_kmalloc, lpfc_pool_kfree,
+			(void *)(unsigned long)sizeof(struct lpfc_nodelist));
+	if (!phba->nlp_mem_pool)
+		goto fail_free_mbox_pool;
+
+	return 0;
+
+ fail_free_mbox_pool:
+	mempool_destroy(phba->mbox_mem_pool);
+ fail_free_mbuf_pool:
+	while (--i)
+		pci_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt,
+						 pool->elements[i].phys);
+	kfree(pool->elements);
+	pci_pool_destroy(phba->lpfc_mbuf_pool);
+ fail_free_dma_buf_pool:
+	pci_pool_destroy(phba->lpfc_scsi_dma_buf_pool);
+ fail:
+	return -ENOMEM;
+}
+
+void
+lpfc_mem_free(struct lpfc_hba * phba)
+{
+	struct lpfc_sli *psli = &phba->sli;
+	struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool;
+	LPFC_MBOXQ_t *mbox, *next_mbox;
+	struct lpfc_dmabuf   *mp;
+	int i;
+
+	list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq, 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;
+	if (psli->mbox_active) {
+		mbox = psli->mbox_active;
+		mp = (struct lpfc_dmabuf *) (mbox->context1);
+		if (mp) {
+			lpfc_mbuf_free(phba, mp->virt, mp->phys);
+			kfree(mp);
+		}
+		mempool_free(mbox, phba->mbox_mem_pool);
+		psli->mbox_active = NULL;
+	}
+
+	for (i = 0; i < pool->current_count; i++)
+		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);
+}
+
+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;
+	void *ret;
+
+	ret = pci_pool_alloc(phba->lpfc_mbuf_pool, GFP_KERNEL, handle);
+
+	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;
+	}
+	return ret;
+}
+
+void
+lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma)
+{
+	struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool;
+
+	if (pool->current_count < pool->max_count) {
+		pool->elements[pool->current_count].virt = virt;
+		pool->elements[pool->current_count].phys = dma;
+		pool->current_count++;
+	} else {
+		pci_pool_free(phba->lpfc_mbuf_pool, virt, dma);
+	}
+	return;
+}