path: root/drivers/scsi/lpfc/lpfc_mem.c

/*******************************************************************
 * This file is part of the Emulex Linux Device Driver for         *
 * Fibre Channel Host Bus Adapters.                                *
 * Copyright (C) 2017 Broadcom. All Rights Reserved. The term      *
 * “Broadcom” refers to Broadcom Limited and/or its subsidiaries.  *
 * Copyright (C) 2004-2014 Emulex.  All rights reserved.           *
 * EMULEX and SLI are trademarks of Emulex.                        *
 * www.broadcom.com                                                *
 * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
 *                                                                 *
 * This program is free software; you can redistribute it and/or   *
 * modify it under the terms of version 2 of the GNU General       *
 * Public License as published by the Free Software Foundation.    *
 * This program is distributed in the hope that it will be useful. *
 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
 * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
 * more details, a copy of which can be found in the file COPYING  *
 * included with this package.                                     *
 *******************************************************************/

#include <linux/mempool.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/interrupt.h>

#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_transport_fc.h>
#include <scsi/fc/fc_fs.h>

#include <linux/nvme-fc-driver.h>

#include "lpfc_hw4.h"
#include "lpfc_hw.h"
#include "lpfc_sli.h"
#include "lpfc_sli4.h"
#include "lpfc_nl.h"
#include "lpfc_disc.h"
#include "lpfc.h"
#include "lpfc_scsi.h"
#include "lpfc_nvme.h"
#include "lpfc_nvmet.h"
#include "lpfc_crtn.h"
#include "lpfc_logmsg.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 */
#define LPFC_DEVICE_DATA_POOL_SIZE 64   /* max elements in device data pool */

int
lpfc_mem_alloc_active_rrq_pool_s4(struct lpfc_hba *phba) {
	size_t bytes;
	int max_xri = phba->sli4_hba.max_cfg_param.max_xri;

	if (max_xri <= 0)
		return -ENOMEM;
	bytes = ((BITS_PER_LONG - 1 + max_xri) / BITS_PER_LONG) *
		  sizeof(unsigned long);
	phba->cfg_rrq_xri_bitmap_sz = bytes;
	phba->active_rrq_pool = mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE,
							    bytes);
	if (!phba->active_rrq_pool)
		return -ENOMEM;
	else
		return 0;
}

/**
 * lpfc_mem_alloc - create and allocate all PCI and memory pools
 * @phba: HBA to allocate pools for
 *
 * Description: Creates and allocates PCI pools lpfc_sg_dma_buf_pool,
 * lpfc_mbuf_pool, lpfc_hrb_pool.  Creates and allocates kmalloc-backed mempools
 * for LPFC_MBOXQ_t and lpfc_nodelist.  Also allocates the VPI bitmask.
 *
 * Notes: Not interrupt-safe.  Must be called with no locks held.  If any
 * allocation fails, frees all successfully allocated memory before returning.
 *
 * Returns:
 *   0 on success
 *   -ENOMEM on failure (if any memory allocations fail)
 **/
int
lpfc_mem_alloc(struct lpfc_hba *phba, int align)
{
	struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool;
	int i;

	if (phba->sli_rev == LPFC_SLI_REV4) {
		/* Calculate alignment */
		if (phba->cfg_sg_dma_buf_size < SLI4_PAGE_SIZE)
			i = phba->cfg_sg_dma_buf_size;
		else
			i = SLI4_PAGE_SIZE;

		phba->lpfc_sg_dma_buf_pool =
			dma_pool_create("lpfc_sg_dma_buf_pool",
					&phba->pcidev->dev,
					phba->cfg_sg_dma_buf_size,
					i, 0);
		if (!phba->lpfc_sg_dma_buf_pool)
			goto fail;

	} else {
		phba->lpfc_sg_dma_buf_pool =
			dma_pool_create("lpfc_sg_dma_buf_pool",
					&phba->pcidev->dev, phba->cfg_sg_dma_buf_size,
					align, 0);

		if (!phba->lpfc_sg_dma_buf_pool)
			goto fail;
	}

	phba->lpfc_mbuf_pool = dma_pool_create("lpfc_mbuf_pool", &phba->pcidev->dev,
							LPFC_BPL_SIZE,
							align, 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);
	if (!pool->elements)
		goto fail_free_lpfc_mbuf_pool;

	pool->max_count = 0;
	pool->current_count = 0;
	for ( i = 0; i < LPFC_MBUF_POOL_SIZE; i++) {
		pool->elements[i].virt = dma_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_kmalloc_pool(LPFC_MEM_POOL_SIZE,
							 sizeof(LPFC_MBOXQ_t));
	if (!phba->mbox_mem_pool)
		goto fail_free_mbuf_pool;

	phba->nlp_mem_pool = mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE,
						sizeof(struct lpfc_nodelist));
	if (!phba->nlp_mem_pool)
		goto fail_free_mbox_pool;

	if (phba->sli_rev == LPFC_SLI_REV4) {
		phba->rrq_pool =
			mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE,
						sizeof(struct lpfc_node_rrq));
		if (!phba->rrq_pool)
			goto fail_free_nlp_mem_pool;
		phba->lpfc_hrb_pool = dma_pool_create("lpfc_hrb_pool",
					      &phba->pcidev->dev,
					      LPFC_HDR_BUF_SIZE, align, 0);
		if (!phba->lpfc_hrb_pool)
			goto fail_free_rrq_mem_pool;

		phba->lpfc_drb_pool = dma_pool_create("lpfc_drb_pool",
					      &phba->pcidev->dev,
					      LPFC_DATA_BUF_SIZE, align, 0);
		if (!phba->lpfc_drb_pool)
			goto fail_free_hrb_pool;
		phba->lpfc_hbq_pool = NULL;
	} else {
		phba->lpfc_hbq_pool = dma_pool_create("lpfc_hbq_pool",
			&phba->pcidev->dev, LPFC_BPL_SIZE, align, 0);
		if (!phba->lpfc_hbq_pool)
			goto fail_free_nlp_mem_pool;
		phba->lpfc_hrb_pool = NULL;
		phba->lpfc_drb_pool = NULL;
	}

	if (phba->cfg_EnableXLane) {
		phba->device_data_mem_pool = mempool_create_kmalloc_pool(
					LPFC_DEVICE_DATA_POOL_SIZE,
					sizeof(struct lpfc_device_data));
		if (!phba->device_data_mem_pool)
			goto fail_free_drb_pool;
	} else {
		phba->device_data_mem_pool = NULL;
	}

	return 0;
fail_free_drb_pool:
	dma_pool_destroy(phba->lpfc_drb_pool);
	phba->lpfc_drb_pool = NULL;
 fail_free_hrb_pool:
	dma_pool_destroy(phba->lpfc_hrb_pool);
	phba->lpfc_hrb_pool = NULL;
 fail_free_rrq_mem_pool:
	mempool_destroy(phba->rrq_pool);
	phba->rrq_pool = NULL;
 fail_free_nlp_mem_pool:
	mempool_destroy(phba->nlp_mem_pool);
	phba->nlp_mem_pool = NULL;
 fail_free_mbox_pool:
	mempool_destroy(phba->mbox_mem_pool);
	phba->mbox_mem_pool = NULL;
 fail_free_mbuf_pool:
	while