[deliverable/linux.git] / drivers / scsi / lpfc / lpfc_mem.c

/*******************************************************************
 * This file is part of the Emulex Linux Device Driver for         *
 * Fibre Channel Host Bus Adapters.                                *
 * Copyright (C) 2004-2008 Emulex.  All rights reserved.           *
 * EMULEX and SLI are trademarks of Emulex.                        *
 * www.emulex.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/pci.h>
#include <linux/interrupt.h>

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

#include <scsi/scsi.h>

#include "lpfc_hw.h"
#include "lpfc_sli.h"
#include "lpfc_nl.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 */


/**
 * lpfc_mem_alloc - create and allocate all PCI and memory pools
 * @phba: HBA to allocate pools for
 *
 * Description: Creates and allocates PCI pools lpfc_scsi_dma_buf_pool,
 * lpfc_mbuf_pool, lpfc_hbq_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)
{
	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",
				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);
	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 = 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_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;

	phba->lpfc_hbq_pool = pci_pool_create("lpfc_hbq_pool",phba->pcidev,
					      LPFC_BPL_SIZE, 8, 0);
	if (!phba->lpfc_hbq_pool)
		goto fail_free_nlp_mem_pool;

	/* vpi zero is reserved for the physical port so add 1 to max */
	longs = ((phba->max_vpi + 1) + 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);
	pci_pool_destroy(phba->lpfc_hbq_pool);
 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 (i--)
		pci_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt,
						 pool->elements[i].phys);
	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;
}

/**
 * lpfc_mem_free - Frees all PCI and memory allocated by lpfc_mem_alloc
 * @phba: HBA to free memory for
 *
 * Description: Frees PCI pools lpfc_scsi_dma_buf_pool, lpfc_mbuf_pool,
 * lpfc_hbq_pool.  Frees kmalloc-backed mempools for LPFC_MBOXQ_t and
 * lpfc_nodelist.  Also frees the VPI bitmask
 *
 * Returns: None
 **/
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;

	kfree(phba->vpi_bmask);
	lpfc_sli_hbqbuf_free_all(phba);

	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);
	}
	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;
	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);

	pci_pool_destroy(phba->lpfc_hbq_pool);
	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->lpfc_hbq_pool = NULL;
	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;
}

/**
 * lpfc_mbuf_alloc - Allocate an mbuf from the lpfc_mbuf_pool PCI pool
 * @phba: HBA which owns the pool to allocate from
 * @mem_flags: indicates if this is a priority (MEM_PRI) allocation
 * @handle: used to return the DMA-mapped address of the mbuf
 *
 * Description: Allocates a DMA-mapped buffer from the lpfc_mbuf_pool PCI pool.
 * Allocates from generic pci_pool_alloc function first and if that fails and
 * mem_flags has MEM_PRI set (the only defined flag), returns an mbuf from the
 * HBA's pool.
 *
 * Notes: Not interrupt-safe.  Must be called with no locks held.  Takes
 * phba->hbalock.
 *
 * Returns:
 *   pointer to the allocated mbuf on success
 *   NULL on failure
 **/
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;
}

/**
 * __lpfc_mbuf_free - Free an mbuf from the lpfc_mbuf_pool PCI pool (locked)
 * @phba: HBA which owns the pool to return to
 * @virt: mbuf to free
 * @dma: the DMA-mapped address of the lpfc_mbuf_pool to be freed
 *
 * Description: Returns an mbuf lpfc_mbuf_pool to the lpfc_mbuf_safety_pool if
 * it is below its max_count, frees the mbuf otherwise.
 *
 * Notes: Must be called with phba->hbalock held to synchronize access to
 * lpfc_mbuf_safety_pool.
 *
 * Returns: None
 **/
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;
}

/**
 * lpfc_mbuf_free - Free an mbuf from the lpfc_mbuf_pool PCI pool (unlocked)
 * @phba: HBA which owns the pool to return to
 * @virt: mbuf to free
 * @dma: the DMA-mapped address of the lpfc_mbuf_pool to be freed
 *
 * Description: Returns an mbuf lpfc_mbuf_pool to the lpfc_mbuf_safety_pool if
 * it is below its max_count, frees the mbuf otherwise.
 *
 * Notes: Takes phba->hbalock.  Can be called with or without other locks held.
 *
 * Returns: None
 **/
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;
}

/**
 * lpfc_els_hbq_alloc - Allocate an HBQ buffer
 * @phba: HBA to allocate HBQ buffer for
 *
 * Description: Allocates a DMA-mapped HBQ buffer from the lpfc_hbq_pool PCI
 * pool along a non-DMA-mapped container for it.
 *
 * Notes: Not interrupt-safe.  Must be called with no locks held.
 *
 * Returns:
 *   pointer to HBQ on success
 *   NULL on failure
 **/
struct hbq_dmabuf *
lpfc_els_hbq_alloc(struct lpfc_hba *phba)
{
	struct hbq_dmabuf *hbqbp;

	hbqbp = kmalloc(sizeof(struct hbq_dmabuf), GFP_KERNEL);
	if (!hbqbp)
		return NULL;

	hbqbp->dbuf.virt = pci_pool_alloc(phba->lpfc_hbq_pool, GFP_KERNEL,
					  &hbqbp->dbuf.phys);
	if (!hbqbp->dbuf.virt) {
		kfree(hbqbp);
		return NULL;
	}
	hbqbp->size = LPFC_BPL_SIZE;
	return hbqbp;
}

/**
 * lpfc_mem_hbq_free - Frees an HBQ buffer allocated with lpfc_els_hbq_alloc
 * @phba: HBA buffer was allocated for
 * @hbqbp: HBQ container returned by lpfc_els_hbq_alloc
 *
 * Description: Frees both the container and the DMA-mapped buffer returned by
 * lpfc_els_hbq_alloc.
 *
 * Notes: Can be called with or without locks held.
 *
 * Returns: None
 **/
void
lpfc_els_hbq_free(struct lpfc_hba *phba, struct hbq_dmabuf *hbqbp)
{
	pci_pool_free(phba->lpfc_hbq_pool, hbqbp->dbuf.virt, hbqbp->dbuf.phys);
	kfree(hbqbp);
	return;
}

/**
 * lpfc_in_buf_free - Free a DMA buffer
 * @phba: HBA buffer is associated with
 * @mp: Buffer to free
 *
 * Description: Frees the given DMA buffer in the appropriate way given if the
 * HBA is running in SLI3 mode with HBQs enabled.
 *
 * Notes: Takes phba->hbalock.  Can be called with or without other locks held.
 *
 * Returns: None
 **/
void
lpfc_in_buf_free(struct lpfc_hba *phba, struct lpfc_dmabuf *mp)
{
	struct hbq_dmabuf *hbq_entry;
	unsigned long flags;

	if (!mp)
		return;

	if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
		/* Check whether HBQ is still in use */
		spin_lock_irqsave(&phba->hbalock, flags);
		if (!phba->hbq_in_use) {
			spin_unlock_irqrestore(&phba->hbalock, flags);
			return;
		}
		hbq_entry = container_of(mp, struct hbq_dmabuf, dbuf);
		list_del(&hbq_entry->dbuf.list);
		if (hbq_entry->tag == -1) {
			(phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer)
				(phba, hbq_entry);
		} else {
			lpfc_sli_free_hbq(phba, hbq_entry);
		}
		spin_unlock_irqrestore(&phba->hbalock, flags);
	} else {
		lpfc_mbuf_free(phba, mp->virt, mp->phys);
		kfree(mp);
	}
	return;
}
Commit	Line	Data
dea3101e	1	/*******************************************************************
dea3101e	2	* This file is part of the Emulex Linux Device Driver for *
c44ce173	3	* Fibre Channel Host Bus Adapters. *
e59058c4	4	* Copyright (C) 2004-2008 Emulex. All rights reserved. *
c44ce173	5	* EMULEX and SLI are trademarks of Emulex. *
dea3101e	6	* www.emulex.com *
c44ce173	7	* Portions Copyright (C) 2004-2005 Christoph Hellwig *
dea3101e	8	* *
dea3101e	9	* This program is free software; you can redistribute it and/or *
c44ce173 JSEC	10	* modify it under the terms of version 2 of the GNU General *
	11	* Public License as published by the Free Software Foundation. *
	12	* This program is distributed in the hope that it will be useful. *
	13	* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
	14	* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
	15	* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
	16	* DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
	17	* TO BE LEGALLY INVALID. See the GNU General Public License for *
	18	* more details, a copy of which can be found in the file COPYING *
	19	* included with this package. *
dea3101e	20	*******************************************************************/
dea3101e	21
dea3101e	22	#include <linux/mempool.h>
	23	#include <linux/pci.h>
	24	#include <linux/interrupt.h>
	25
f888ba3c JSEC	26	#include <scsi/scsi_device.h>
	27	#include <scsi/scsi_transport_fc.h>
	28
91886523 JSEC	29	#include <scsi/scsi.h>
91886523 JSEC	30
dea3101e	31	#include "lpfc_hw.h"
dea3101e	32	#include "lpfc_sli.h"
ea2151b4	33	#include "lpfc_nl.h"
dea3101e	34	#include "lpfc_disc.h"
	35	#include "lpfc_scsi.h"
	36	#include "lpfc.h"
	37	#include "lpfc_crtn.h"
	38
	39	#define LPFC_MBUF_POOL_SIZE 64 /* max elements in MBUF safety pool */
	40	#define LPFC_MEM_POOL_SIZE 64 /* max elem in non-DMA safety pool */
	41
2e0fef85	42
e59058c4	43	/**
3621a710	44	* lpfc_mem_alloc - create and allocate all PCI and memory pools
e59058c4 JS	45	* @phba: HBA to allocate pools for
	46	*
	47	* Description: Creates and allocates PCI pools lpfc_scsi_dma_buf_pool,
	48	* lpfc_mbuf_pool, lpfc_hbq_pool. Creates and allocates kmalloc-backed mempools
	49	* for LPFC_MBOXQ_t and lpfc_nodelist. Also allocates the VPI bitmask.
	50	*
	51	* Notes: Not interrupt-safe. Must be called with no locks held. If any
	52	* allocation fails, frees all successfully allocated memory before returning.
	53	*
	54	* Returns:
	55	* 0 on success
	56	* -ENOMEM on failure (if any memory allocations fail)
	57	**/
dea3101e	58	int
	59	lpfc_mem_alloc(struct lpfc_hba * phba)
	60	{
	61	struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool;
92d7f7b0	62	int longs;
dea3101e	63	int i;
	64
	65	phba->lpfc_scsi_dma_buf_pool = pci_pool_create("lpfc_scsi_dma_buf_pool",
	66	phba->pcidev, phba->cfg_sg_dma_buf_size, 8, 0);
	67	if (!phba->lpfc_scsi_dma_buf_pool)
	68	goto fail;
	69
	70	phba->lpfc_mbuf_pool = pci_pool_create("lpfc_mbuf_pool", phba->pcidev,
	71	LPFC_BPL_SIZE, 8,0);
	72	if (!phba->lpfc_mbuf_pool)
	73	goto fail_free_dma_buf_pool;
	74
	75	pool->elements = kmalloc(sizeof(struct lpfc_dmabuf) *
	76	LPFC_MBUF_POOL_SIZE, GFP_KERNEL);
a96e0c77 MK	77	if (!pool->elements)
	78	goto fail_free_lpfc_mbuf_pool;
	79
dea3101e	80	pool->max_count = 0;
	81	pool->current_count = 0;
	82	for ( i = 0; i < LPFC_MBUF_POOL_SIZE; i++) {
	83	pool->elements[i].virt = pci_pool_alloc(phba->lpfc_mbuf_pool,
	84	GFP_KERNEL, &pool->elements[i].phys);
	85	if (!pool->elements[i].virt)
	86	goto fail_free_mbuf_pool;
	87	pool->max_count++;
	88	pool->current_count++;
	89	}
	90
0eaae62a MD	91	phba->mbox_mem_pool = mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE,
0eaae62a MD	92	sizeof(LPFC_MBOXQ_t));
dea3101e	93	if (!phba->mbox_mem_pool)
	94	goto fail_free_mbuf_pool;
	95
0eaae62a MD	96	phba->nlp_mem_pool = mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE,
0eaae62a MD	97	sizeof(struct lpfc_nodelist));
dea3101e	98	if (!phba->nlp_mem_pool)
	99	goto fail_free_mbox_pool;
	100
ed957684 JS	101	phba->lpfc_hbq_pool = pci_pool_create("lpfc_hbq_pool",phba->pcidev,
	102	LPFC_BPL_SIZE, 8, 0);
	103	if (!phba->lpfc_hbq_pool)
	104	goto fail_free_nlp_mem_pool;
	105
858c9f6c JS	106	/* vpi zero is reserved for the physical port so add 1 to max */
858c9f6c JS	107	longs = ((phba->max_vpi + 1) + BITS_PER_LONG - 1) / BITS_PER_LONG;
92d7f7b0 JS	108	phba->vpi_bmask = kzalloc(longs * sizeof(unsigned long), GFP_KERNEL);
	109	if (!phba->vpi_bmask)
	110	goto fail_free_hbq_pool;
	111
dea3101e	112	return 0;
dea3101e	113
92d7f7b0 JS	114	fail_free_hbq_pool:
92d7f7b0 JS	115	lpfc_sli_hbqbuf_free_all(phba);
09372820	116	pci_pool_destroy(phba->lpfc_hbq_pool);
ed957684 JS	117	fail_free_nlp_mem_pool:
	118	mempool_destroy(phba->nlp_mem_pool);
	119	phba->nlp_mem_pool = NULL;
dea3101e	120	fail_free_mbox_pool:
dea3101e	121	mempool_destroy(phba->mbox_mem_pool);
2e0fef85	122	phba->mbox_mem_pool = NULL;
dea3101e	123	fail_free_mbuf_pool:
a96e0c77	124	while (i--)
dea3101e	125	pci_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt,
	126	pool->elements[i].phys);
	127	kfree(pool->elements);
a96e0c77	128	fail_free_lpfc_mbuf_pool:
dea3101e	129	pci_pool_destroy(phba->lpfc_mbuf_pool);
2e0fef85	130	phba->lpfc_mbuf_pool = NULL;
dea3101e	131	fail_free_dma_buf_pool:
dea3101e	132	pci_pool_destroy(phba->lpfc_scsi_dma_buf_pool);
2e0fef85	133	phba->lpfc_scsi_dma_buf_pool = NULL;
dea3101e	134	fail:
	135	return -ENOMEM;
	136	}
	137
e59058c4	138	/**
3621a710	139	* lpfc_mem_free - Frees all PCI and memory allocated by lpfc_mem_alloc
e59058c4 JS	140	* @phba: HBA to free memory for
	141	*
	142	* Description: Frees PCI pools lpfc_scsi_dma_buf_pool, lpfc_mbuf_pool,
	143	* lpfc_hbq_pool. Frees kmalloc-backed mempools for LPFC_MBOXQ_t and
3621a710	144	* lpfc_nodelist. Also frees the VPI bitmask
e59058c4 JS	145	*
	146	* Returns: None
	147	**/
dea3101e	148	void
	149	lpfc_mem_free(struct lpfc_hba * phba)
	150	{
	151	struct lpfc_sli *psli = &phba->sli;
	152	struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool;
	153	LPFC_MBOXQ_t mbox, next_mbox;
	154	struct lpfc_dmabuf *mp;
	155	int i;
	156
92d7f7b0	157	kfree(phba->vpi_bmask);
ed957684 JS	158	lpfc_sli_hbqbuf_free_all(phba);
ed957684 JS	159
dea3101e	160	list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq, list) {
	161	mp = (struct lpfc_dmabuf *) (mbox->context1);
	162	if (mp) {
	163	lpfc_mbuf_free(phba, mp->virt, mp->phys);
	164	kfree(mp);
	165	}
	166	list_del(&mbox->list);
	167	mempool_free(mbox, phba->mbox_mem_pool);
	168	}
92d7f7b0 JS	169	list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq_cmpl, list) {
	170	mp = (struct lpfc_dmabuf *) (mbox->context1);
	171	if (mp) {
	172	lpfc_mbuf_free(phba, mp->virt, mp->phys);
	173	kfree(mp);
	174	}
	175	list_del(&mbox->list);
	176	mempool_free(mbox, phba->mbox_mem_pool);
	177	}
dea3101e	178
	179	psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
	180	if (psli->mbox_active) {
	181	mbox = psli->mbox_active;
	182	mp = (struct lpfc_dmabuf *) (mbox->context1);
	183	if (mp) {
	184	lpfc_mbuf_free(phba, mp->virt, mp->phys);
	185	kfree(mp);
	186	}
	187	mempool_free(mbox, phba->mbox_mem_pool);
	188	psli->mbox_active = NULL;
	189	}
	190
	191	for (i = 0; i < pool->current_count; i++)
	192	pci_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt,
	193	pool->elements[i].phys);
	194	kfree(pool->elements);
2e0fef85	195
ed957684	196	pci_pool_destroy(phba->lpfc_hbq_pool);
dea3101e	197	mempool_destroy(phba->nlp_mem_pool);
	198	mempool_destroy(phba->mbox_mem_pool);
	199
	200	pci_pool_destroy(phba->lpfc_scsi_dma_buf_pool);
	201	pci_pool_destroy(phba->lpfc_mbuf_pool);
9f49d3b0	202
ed957684	203	phba->lpfc_hbq_pool = NULL;
2e0fef85 JS	204	phba->nlp_mem_pool = NULL;
	205	phba->mbox_mem_pool = NULL;
	206	phba->lpfc_scsi_dma_buf_pool = NULL;
	207	phba->lpfc_mbuf_pool = NULL;
	208
e59058c4	209	/* Free the iocb lookup array */
9f49d3b0 JS	210	kfree(psli->iocbq_lookup);
9f49d3b0 JS	211	psli->iocbq_lookup = NULL;
dea3101e	212	}
dea3101e	213
e59058c4	214	/**
3621a710	215	* lpfc_mbuf_alloc - Allocate an mbuf from the lpfc_mbuf_pool PCI pool
e59058c4 JS	216	* @phba: HBA which owns the pool to allocate from
	217	* @mem_flags: indicates if this is a priority (MEM_PRI) allocation
	218	* @handle: used to return the DMA-mapped address of the mbuf
	219	*
	220	* Description: Allocates a DMA-mapped buffer from the lpfc_mbuf_pool PCI pool.
	221	* Allocates from generic pci_pool_alloc function first and if that fails and
	222	* mem_flags has MEM_PRI set (the only defined flag), returns an mbuf from the
	223	* HBA's pool.
	224	*
	225	* Notes: Not interrupt-safe. Must be called with no locks held. Takes
	226	* phba->hbalock.
	227	*
	228	* Returns:
	229	* pointer to the allocated mbuf on success
	230	* NULL on failure
	231	**/
dea3101e	232	void *
	233	lpfc_mbuf_alloc(struct lpfc_hba phba, int mem_flags, dma_addr_t handle)
	234	{
	235	struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool;
2e0fef85	236	unsigned long iflags;
dea3101e	237	void *ret;
	238
	239	ret = pci_pool_alloc(phba->lpfc_mbuf_pool, GFP_KERNEL, handle);
	240
2e0fef85	241	spin_lock_irqsave(&phba->hbalock, iflags);
92d7f7b0	242	if (!ret && (mem_flags & MEM_PRI) && pool->current_count) {
dea3101e	243	pool->current_count--;
	244	ret = pool->elements[pool->current_count].virt;
	245	*handle = pool->elements[pool->current_count].phys;
	246	}
2e0fef85	247	spin_unlock_irqrestore(&phba->hbalock, iflags);
dea3101e	248	return ret;
	249	}
	250
e59058c4	251	/**
3621a710	252	* __lpfc_mbuf_free - Free an mbuf from the lpfc_mbuf_pool PCI pool (locked)
e59058c4 JS	253	* @phba: HBA which owns the pool to return to
	254	* @virt: mbuf to free
	255	* @dma: the DMA-mapped address of the lpfc_mbuf_pool to be freed
	256	*
	257	* Description: Returns an mbuf lpfc_mbuf_pool to the lpfc_mbuf_safety_pool if
	258	* it is below its max_count, frees the mbuf otherwise.
	259	*
	260	* Notes: Must be called with phba->hbalock held to synchronize access to
	261	* lpfc_mbuf_safety_pool.
	262	*
	263	* Returns: None
	264	**/
dea3101e	265	void
2e0fef85	266	__lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma)
dea3101e	267	{
	268	struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool;
	269
	270	if (pool->current_count < pool->max_count) {
	271	pool->elements[pool->current_count].virt = virt;
	272	pool->elements[pool->current_count].phys = dma;
	273	pool->current_count++;
	274	} else {
	275	pci_pool_free(phba->lpfc_mbuf_pool, virt, dma);
	276	}
	277	return;
	278	}
2e0fef85	279
e59058c4	280	/**
3621a710	281	* lpfc_mbuf_free - Free an mbuf from the lpfc_mbuf_pool PCI pool (unlocked)
e59058c4 JS	282	* @phba: HBA which owns the pool to return to
	283	* @virt: mbuf to free
	284	* @dma: the DMA-mapped address of the lpfc_mbuf_pool to be freed
	285	*
	286	* Description: Returns an mbuf lpfc_mbuf_pool to the lpfc_mbuf_safety_pool if
	287	* it is below its max_count, frees the mbuf otherwise.
	288	*
	289	* Notes: Takes phba->hbalock. Can be called with or without other locks held.
	290	*
	291	* Returns: None
	292	**/
2e0fef85 JS	293	void
	294	lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma)
	295	{
	296	unsigned long iflags;
	297
	298	spin_lock_irqsave(&phba->hbalock, iflags);
	299	__lpfc_mbuf_free(phba, virt, dma);
	300	spin_unlock_irqrestore(&phba->hbalock, iflags);
	301	return;
	302	}
ed957684	303
e59058c4	304	/**
3621a710	305	* lpfc_els_hbq_alloc - Allocate an HBQ buffer
e59058c4 JS	306	* @phba: HBA to allocate HBQ buffer for
	307	*
	308	* Description: Allocates a DMA-mapped HBQ buffer from the lpfc_hbq_pool PCI
	309	* pool along a non-DMA-mapped container for it.
	310	*
	311	* Notes: Not interrupt-safe. Must be called with no locks held.
	312	*
	313	* Returns:
	314	* pointer to HBQ on success
	315	* NULL on failure
	316	**/
51ef4c26 JS	317	struct hbq_dmabuf *
51ef4c26 JS	318	lpfc_els_hbq_alloc(struct lpfc_hba *phba)
ed957684	319	{
51ef4c26 JS	320	struct hbq_dmabuf *hbqbp;
	321
	322	hbqbp = kmalloc(sizeof(struct hbq_dmabuf), GFP_KERNEL);
	323	if (!hbqbp)
	324	return NULL;
	325
	326	hbqbp->dbuf.virt = pci_pool_alloc(phba->lpfc_hbq_pool, GFP_KERNEL,
	327	&hbqbp->dbuf.phys);
	328	if (!hbqbp->dbuf.virt) {
	329	kfree(hbqbp);
	330	return NULL;
	331	}
	332	hbqbp->size = LPFC_BPL_SIZE;
	333	return hbqbp;
ed957684 JS	334	}
ed957684 JS	335
e59058c4	336	/**
3621a710	337	* lpfc_mem_hbq_free - Frees an HBQ buffer allocated with lpfc_els_hbq_alloc
e59058c4 JS	338	* @phba: HBA buffer was allocated for
	339	* @hbqbp: HBQ container returned by lpfc_els_hbq_alloc
	340	*
	341	* Description: Frees both the container and the DMA-mapped buffer returned by
	342	* lpfc_els_hbq_alloc.
	343	*
	344	* Notes: Can be called with or without locks held.
	345	*
	346	* Returns: None
	347	**/
ed957684	348	void
51ef4c26	349	lpfc_els_hbq_free(struct lpfc_hba phba, struct hbq_dmabuf hbqbp)
ed957684	350	{
51ef4c26 JS	351	pci_pool_free(phba->lpfc_hbq_pool, hbqbp->dbuf.virt, hbqbp->dbuf.phys);
51ef4c26 JS	352	kfree(hbqbp);
ed957684 JS	353	return;
	354	}
	355
e59058c4	356	/**
3621a710	357	* lpfc_in_buf_free - Free a DMA buffer
e59058c4 JS	358	* @phba: HBA buffer is associated with
	359	* @mp: Buffer to free
	360	*
	361	* Description: Frees the given DMA buffer in the appropriate way given if the
	362	* HBA is running in SLI3 mode with HBQs enabled.
	363	*
	364	* Notes: Takes phba->hbalock. Can be called with or without other locks held.
	365	*
	366	* Returns: None
	367	**/
92d7f7b0 JS	368	void
	369	lpfc_in_buf_free(struct lpfc_hba phba, struct lpfc_dmabuf mp)
	370	{
	371	struct hbq_dmabuf *hbq_entry;
3163f725	372	unsigned long flags;
92d7f7b0	373
7f5f3d0d JS	374	if (!mp)
	375	return;
	376
92d7f7b0	377	if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
3163f725 JS	378	/* Check whether HBQ is still in use */
	379	spin_lock_irqsave(&phba->hbalock, flags);
	380	if (!phba->hbq_in_use) {
	381	spin_unlock_irqrestore(&phba->hbalock, flags);
	382	return;
	383	}
92d7f7b0	384	hbq_entry = container_of(mp, struct hbq_dmabuf, dbuf);
3163f725	385	list_del(&hbq_entry->dbuf.list);
92d7f7b0	386	if (hbq_entry->tag == -1) {
51ef4c26 JS	387	(phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer)
51ef4c26 JS	388	(phba, hbq_entry);
92d7f7b0 JS	389	} else {
	390	lpfc_sli_free_hbq(phba, hbq_entry);
	391	}
3163f725	392	spin_unlock_irqrestore(&phba->hbalock, flags);
92d7f7b0 JS	393	} else {
	394	lpfc_mbuf_free(phba, mp->virt, mp->phys);
	395	kfree(mp);
	396	}
	397	return;
	398	}