/*******************************************************************
* 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;
}
