![Kees Cook](/assets/img/avatar_default.png)
The kmalloc() function has a 2-factor argument form, kmalloc_array(). This patch replaces cases of: kmalloc(a * b, gfp) with: kmalloc_array(a * b, gfp) as well as handling cases of: kmalloc(a * b * c, gfp) with: kmalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kmalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kmalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The tools/ directory was manually excluded, since it has its own implementation of kmalloc(). The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kmalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kmalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kmalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(u8) * COUNT + COUNT , ...) | kmalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kmalloc( - sizeof(char) * COUNT + COUNT , ...) | kmalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kmalloc + kmalloc_array ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kmalloc + kmalloc_array ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kmalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kmalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kmalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kmalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kmalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kmalloc(C1 * C2 * C3, ...) | kmalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kmalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kmalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kmalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kmalloc(sizeof(THING) * C2, ...) | kmalloc(sizeof(TYPE) * C2, ...) | kmalloc(C1 * C2 * C3, ...) | kmalloc(C1 * C2, ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - (E1) * E2 + E1, E2 , ...) | - kmalloc + kmalloc_array ( - (E1) * (E2) + E1, E2 , ...) | - kmalloc + kmalloc_array ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
774 lines
22 KiB
C
774 lines
22 KiB
C
/*******************************************************************
|
|
* This file is part of the Emulex Linux Device Driver for *
|
|
* Fibre Channel Host Bus Adapters. *
|
|
* Copyright (C) 2017-2018 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_array(LPFC_MBUF_POOL_SIZE,
|
|
sizeof(struct lpfc_dmabuf),
|
|
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 (i--)
|
|
dma_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt,
|
|
pool->elements[i].phys);
|
|
kfree(pool->elements);
|
|
fail_free_lpfc_mbuf_pool:
|
|
dma_pool_destroy(phba->lpfc_mbuf_pool);
|
|
phba->lpfc_mbuf_pool = NULL;
|
|
fail_free_dma_buf_pool:
|
|
dma_pool_destroy(phba->lpfc_sg_dma_buf_pool);
|
|
phba->lpfc_sg_dma_buf_pool = NULL;
|
|
fail:
|
|
return -ENOMEM;
|
|
}
|
|
|
|
int
|
|
lpfc_nvmet_mem_alloc(struct lpfc_hba *phba)
|
|
{
|
|
phba->lpfc_nvmet_drb_pool =
|
|
dma_pool_create("lpfc_nvmet_drb_pool",
|
|
&phba->pcidev->dev, LPFC_NVMET_DATA_BUF_SIZE,
|
|
SGL_ALIGN_SZ, 0);
|
|
if (!phba->lpfc_nvmet_drb_pool) {
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
|
|
"6024 Can't enable NVME Target - no memory\n");
|
|
return -ENOMEM;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* lpfc_mem_free - Frees memory allocated by lpfc_mem_alloc
|
|
* @phba: HBA to free memory for
|
|
*
|
|
* Description: Free the memory allocated by lpfc_mem_alloc routine. This
|
|
* routine is a the counterpart of lpfc_mem_alloc.
|
|
*
|
|
* Returns: None
|
|
**/
|
|
void
|
|
lpfc_mem_free(struct lpfc_hba *phba)
|
|
{
|
|
int i;
|
|
struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool;
|
|
struct lpfc_device_data *device_data;
|
|
|
|
/* Free HBQ pools */
|
|
lpfc_sli_hbqbuf_free_all(phba);
|
|
if (phba->lpfc_nvmet_drb_pool)
|
|
dma_pool_destroy(phba->lpfc_nvmet_drb_pool);
|
|
phba->lpfc_nvmet_drb_pool = NULL;
|
|
if (phba->lpfc_drb_pool)
|
|
dma_pool_destroy(phba->lpfc_drb_pool);
|
|
phba->lpfc_drb_pool = NULL;
|
|
if (phba->lpfc_hrb_pool)
|
|
dma_pool_destroy(phba->lpfc_hrb_pool);
|
|
phba->lpfc_hrb_pool = NULL;
|
|
if (phba->txrdy_payload_pool)
|
|
dma_pool_destroy(phba->txrdy_payload_pool);
|
|
phba->txrdy_payload_pool = NULL;
|
|
|
|
if (phba->lpfc_hbq_pool)
|
|
dma_pool_destroy(phba->lpfc_hbq_pool);
|
|
phba->lpfc_hbq_pool = NULL;
|
|
|
|
if (phba->rrq_pool)
|
|
mempool_destroy(phba->rrq_pool);
|
|
phba->rrq_pool = NULL;
|
|
|
|
/* Free NLP memory pool */
|
|
mempool_destroy(phba->nlp_mem_pool);
|
|
phba->nlp_mem_pool = NULL;
|
|
if (phba->sli_rev == LPFC_SLI_REV4 && phba->active_rrq_pool) {
|
|
mempool_destroy(phba->active_rrq_pool);
|
|
phba->active_rrq_pool = NULL;
|
|
}
|
|
|
|
/* Free mbox memory pool */
|
|
mempool_destroy(phba->mbox_mem_pool);
|
|
phba->mbox_mem_pool = NULL;
|
|
|
|
/* Free MBUF memory pool */
|
|
for (i = 0; i < pool->current_count; i++)
|
|
dma_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt,
|
|
pool->elements[i].phys);
|
|
kfree(pool->elements);
|
|
|
|
dma_pool_destroy(phba->lpfc_mbuf_pool);
|
|
phba->lpfc_mbuf_pool = NULL;
|
|
|
|
/* Free DMA buffer memory pool */
|
|
dma_pool_destroy(phba->lpfc_sg_dma_buf_pool);
|
|
phba->lpfc_sg_dma_buf_pool = NULL;
|
|
|
|
/* Free Device Data memory pool */
|
|
if (phba->device_data_mem_pool) {
|
|
/* Ensure all objects have been returned to the pool */
|
|
while (!list_empty(&phba->luns)) {
|
|
device_data = list_first_entry(&phba->luns,
|
|
struct lpfc_device_data,
|
|
listentry);
|
|
list_del(&device_data->listentry);
|
|
mempool_free(device_data, phba->device_data_mem_pool);
|
|
}
|
|
mempool_destroy(phba->device_data_mem_pool);
|
|
}
|
|
phba->device_data_mem_pool = NULL;
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* lpfc_mem_free_all - Frees all PCI and driver memory
|
|
* @phba: HBA to free memory for
|
|
*
|
|
* Description: Free memory from PCI and driver memory pools and also those
|
|
* used : lpfc_sg_dma_buf_pool, lpfc_mbuf_pool, lpfc_hrb_pool. Frees
|
|
* kmalloc-backed mempools for LPFC_MBOXQ_t and lpfc_nodelist. Also frees
|
|
* the VPI bitmask.
|
|
*
|
|
* Returns: None
|
|
**/
|
|
void
|
|
lpfc_mem_free_all(struct lpfc_hba *phba)
|
|
{
|
|
struct lpfc_sli *psli = &phba->sli;
|
|
LPFC_MBOXQ_t *mbox, *next_mbox;
|
|
struct lpfc_dmabuf *mp;
|
|
|
|
/* Free memory used in mailbox queue back to mailbox memory pool */
|
|
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);
|
|
}
|
|
/* Free memory used in mailbox cmpl list back to mailbox memory 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);
|
|
}
|
|
/* Free the active mailbox command back to the mailbox memory pool */
|
|
spin_lock_irq(&phba->hbalock);
|
|
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);
|
|
if (mp) {
|
|
lpfc_mbuf_free(phba, mp->virt, mp->phys);
|
|
kfree(mp);
|
|
}
|
|
mempool_free(mbox, phba->mbox_mem_pool);
|
|
psli->mbox_active = NULL;
|
|
}
|
|
|
|
/* Free and destroy all the allocated memory pools */
|
|
lpfc_mem_free(phba);
|
|
|
|
/* Free the iocb lookup array */
|
|
kfree(psli->iocbq_lookup);
|
|
psli->iocbq_lookup = NULL;
|
|
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* 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 dma_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 = dma_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 {
|
|
dma_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_nvmet_buf_alloc - Allocate an nvmet_buf from the
|
|
* lpfc_sg_dma_buf_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 nvmet_buf
|
|
*
|
|
* Description: Allocates a DMA-mapped buffer from the lpfc_sg_dma_buf_pool
|
|
* PCI pool. Allocates from generic dma_pool_alloc function.
|
|
*
|
|
* Returns:
|
|
* pointer to the allocated nvmet_buf on success
|
|
* NULL on failure
|
|
**/
|
|
void *
|
|
lpfc_nvmet_buf_alloc(struct lpfc_hba *phba, int mem_flags, dma_addr_t *handle)
|
|
{
|
|
void *ret;
|
|
|
|
ret = dma_pool_alloc(phba->lpfc_sg_dma_buf_pool, GFP_KERNEL, handle);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* lpfc_nvmet_buf_free - Free an nvmet_buf from the lpfc_sg_dma_buf_pool
|
|
* PCI pool
|
|
* @phba: HBA which owns the pool to return to
|
|
* @virt: nvmet_buf to free
|
|
* @dma: the DMA-mapped address of the lpfc_sg_dma_buf_pool to be freed
|
|
*
|
|
* Returns: None
|
|
**/
|
|
void
|
|
lpfc_nvmet_buf_free(struct lpfc_hba *phba, void *virt, dma_addr_t dma)
|
|
{
|
|
dma_pool_free(phba->lpfc_sg_dma_buf_pool, virt, dma);
|
|
}
|
|
|
|
/**
|
|
* 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_hrb_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 = kzalloc(sizeof(struct hbq_dmabuf), GFP_KERNEL);
|
|
if (!hbqbp)
|
|
return NULL;
|
|
|
|
hbqbp->dbuf.virt = dma_pool_alloc(phba->lpfc_hbq_pool, GFP_KERNEL,
|
|
&hbqbp->dbuf.phys);
|
|
if (!hbqbp->dbuf.virt) {
|
|
kfree(hbqbp);
|
|
return NULL;
|
|
}
|
|
hbqbp->total_size = LPFC_BPL_SIZE;
|
|
return hbqbp;
|
|
}
|
|
|
|
/**
|
|
* lpfc_els_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)
|
|
{
|
|
dma_pool_free(phba->lpfc_hbq_pool, hbqbp->dbuf.virt, hbqbp->dbuf.phys);
|
|
kfree(hbqbp);
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* lpfc_sli4_rb_alloc - Allocate an SLI4 Receive buffer
|
|
* @phba: HBA to allocate a receive buffer for
|
|
*
|
|
* Description: Allocates a DMA-mapped receive buffer from the lpfc_hrb_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_sli4_rb_alloc(struct lpfc_hba *phba)
|
|
{
|
|
struct hbq_dmabuf *dma_buf;
|
|
|
|
dma_buf = kzalloc(sizeof(struct hbq_dmabuf), GFP_KERNEL);
|
|
if (!dma_buf)
|
|
return NULL;
|
|
|
|
dma_buf->hbuf.virt = dma_pool_alloc(phba->lpfc_hrb_pool, GFP_KERNEL,
|
|
&dma_buf->hbuf.phys);
|
|
if (!dma_buf->hbuf.virt) {
|
|
kfree(dma_buf);
|
|
return NULL;
|
|
}
|
|
dma_buf->dbuf.virt = dma_pool_alloc(phba->lpfc_drb_pool, GFP_KERNEL,
|
|
&dma_buf->dbuf.phys);
|
|
if (!dma_buf->dbuf.virt) {
|
|
dma_pool_free(phba->lpfc_hrb_pool, dma_buf->hbuf.virt,
|
|
dma_buf->hbuf.phys);
|
|
kfree(dma_buf);
|
|
return NULL;
|
|
}
|
|
dma_buf->total_size = LPFC_DATA_BUF_SIZE;
|
|
return dma_buf;
|
|
}
|
|
|
|
/**
|
|
* lpfc_sli4_rb_free - Frees a receive buffer
|
|
* @phba: HBA buffer was allocated for
|
|
* @dmab: DMA Buffer container returned by lpfc_sli4_hbq_alloc
|
|
*
|
|
* Description: Frees both the container and the DMA-mapped buffers returned by
|
|
* lpfc_sli4_rb_alloc.
|
|
*
|
|
* Notes: Can be called with or without locks held.
|
|
*
|
|
* Returns: None
|
|
**/
|
|
void
|
|
lpfc_sli4_rb_free(struct lpfc_hba *phba, struct hbq_dmabuf *dmab)
|
|
{
|
|
dma_pool_free(phba->lpfc_hrb_pool, dmab->hbuf.virt, dmab->hbuf.phys);
|
|
dma_pool_free(phba->lpfc_drb_pool, dmab->dbuf.virt, dmab->dbuf.phys);
|
|
kfree(dmab);
|
|
}
|
|
|
|
/**
|
|
* lpfc_sli4_nvmet_alloc - Allocate an SLI4 Receive buffer
|
|
* @phba: HBA to allocate a receive buffer for
|
|
*
|
|
* Description: Allocates a DMA-mapped receive buffer from the lpfc_hrb_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 rqb_dmabuf *
|
|
lpfc_sli4_nvmet_alloc(struct lpfc_hba *phba)
|
|
{
|
|
struct rqb_dmabuf *dma_buf;
|
|
|
|
dma_buf = kzalloc(sizeof(struct rqb_dmabuf), GFP_KERNEL);
|
|
if (!dma_buf)
|
|
return NULL;
|
|
|
|
dma_buf->hbuf.virt = dma_pool_alloc(phba->lpfc_hrb_pool, GFP_KERNEL,
|
|
&dma_buf->hbuf.phys);
|
|
if (!dma_buf->hbuf.virt) {
|
|
kfree(dma_buf);
|
|
return NULL;
|
|
}
|
|
dma_buf->dbuf.virt = dma_pool_alloc(phba->lpfc_nvmet_drb_pool,
|
|
GFP_KERNEL, &dma_buf->dbuf.phys);
|
|
if (!dma_buf->dbuf.virt) {
|
|
dma_pool_free(phba->lpfc_hrb_pool, dma_buf->hbuf.virt,
|
|
dma_buf->hbuf.phys);
|
|
kfree(dma_buf);
|
|
return NULL;
|
|
}
|
|
dma_buf->total_size = LPFC_NVMET_DATA_BUF_SIZE;
|
|
return dma_buf;
|
|
}
|
|
|
|
/**
|
|
* lpfc_sli4_nvmet_free - Frees a receive buffer
|
|
* @phba: HBA buffer was allocated for
|
|
* @dmab: DMA Buffer container returned by lpfc_sli4_rbq_alloc
|
|
*
|
|
* Description: Frees both the container and the DMA-mapped buffers returned by
|
|
* lpfc_sli4_nvmet_alloc.
|
|
*
|
|
* Notes: Can be called with or without locks held.
|
|
*
|
|
* Returns: None
|
|
**/
|
|
void
|
|
lpfc_sli4_nvmet_free(struct lpfc_hba *phba, struct rqb_dmabuf *dmab)
|
|
{
|
|
dma_pool_free(phba->lpfc_hrb_pool, dmab->hbuf.virt, dmab->hbuf.phys);
|
|
dma_pool_free(phba->lpfc_nvmet_drb_pool,
|
|
dmab->dbuf.virt, dmab->dbuf.phys);
|
|
kfree(dmab);
|
|
}
|
|
|
|
/**
|
|
* 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) {
|
|
hbq_entry = container_of(mp, struct hbq_dmabuf, dbuf);
|
|
/* 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;
|
|
}
|
|
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;
|
|
}
|
|
|
|
/**
|
|
* lpfc_rq_buf_free - Free a RQ DMA buffer
|
|
* @phba: HBA buffer is associated with
|
|
* @mp: Buffer to free
|
|
*
|
|
* Description: Frees the given DMA buffer in the appropriate way given by
|
|
* reposting it to its associated RQ so it can be reused.
|
|
*
|
|
* Notes: Takes phba->hbalock. Can be called with or without other locks held.
|
|
*
|
|
* Returns: None
|
|
**/
|
|
void
|
|
lpfc_rq_buf_free(struct lpfc_hba *phba, struct lpfc_dmabuf *mp)
|
|
{
|
|
struct lpfc_rqb *rqbp;
|
|
struct lpfc_rqe hrqe;
|
|
struct lpfc_rqe drqe;
|
|
struct rqb_dmabuf *rqb_entry;
|
|
unsigned long flags;
|
|
int rc;
|
|
|
|
if (!mp)
|
|
return;
|
|
|
|
rqb_entry = container_of(mp, struct rqb_dmabuf, hbuf);
|
|
rqbp = rqb_entry->hrq->rqbp;
|
|
|
|
spin_lock_irqsave(&phba->hbalock, flags);
|
|
list_del(&rqb_entry->hbuf.list);
|
|
hrqe.address_lo = putPaddrLow(rqb_entry->hbuf.phys);
|
|
hrqe.address_hi = putPaddrHigh(rqb_entry->hbuf.phys);
|
|
drqe.address_lo = putPaddrLow(rqb_entry->dbuf.phys);
|
|
drqe.address_hi = putPaddrHigh(rqb_entry->dbuf.phys);
|
|
rc = lpfc_sli4_rq_put(rqb_entry->hrq, rqb_entry->drq, &hrqe, &drqe);
|
|
if (rc < 0) {
|
|
(rqbp->rqb_free_buffer)(phba, rqb_entry);
|
|
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
|
|
"6409 Cannot post to HRQ %d: %x %x %x "
|
|
"DRQ %x %x\n",
|
|
rqb_entry->hrq->queue_id,
|
|
rqb_entry->hrq->host_index,
|
|
rqb_entry->hrq->hba_index,
|
|
rqb_entry->hrq->entry_count,
|
|
rqb_entry->drq->host_index,
|
|
rqb_entry->drq->hba_index);
|
|
} else {
|
|
list_add_tail(&rqb_entry->hbuf.list, &rqbp->rqb_buffer_list);
|
|
rqbp->buffer_count++;
|
|
}
|
|
|
|
spin_unlock_irqrestore(&phba->hbalock, flags);
|
|
}
|