/*******************************************************************
* This file is part of the Emulex Linux Device Driver for *
* Fibre Channel Host Bus Adapters . *
* Copyright ( C ) 2017 - 2023 Broadcom . All Rights Reserved . The term *
* “ Broadcom ” refers to Broadcom Inc . 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 "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_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 */
#define LPFC_RRQ_POOL_SIZE 256 /* max elements in non-DMA pool */
#define LPFC_MBX_POOL_SIZE 256 /* max elements in MBX non-DMA pool */
/* lpfc_mbox_free_sli_mbox
*
* @ phba : HBA to free memory for
* @ mbox : mailbox command to free
*
* This routine detects the mbox type and calls the correct
* free routine to fully release all associated memory .
*/
static void
lpfc_mem_free_sli_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *mbox)
{
/* Detect if the caller's mbox is an SLI4_CONFIG type. If so, this
* mailbox type requires a different cleanup routine . Otherwise , the
* mailbox is just an mbuf and mem_pool release .
*/
if (phba->sli_rev == LPFC_SLI_REV4 &&
bf_get(lpfc_mqe_command, &mbox->u.mqe) == MBX_SLI4_CONFIG) {
lpfc_sli4_mbox_cmd_free(phba, mbox);
} else {
lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
}
}
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
* @ align : alignment requirement for blocks ; must be a power of two
*
* Description : Creates and allocates PCI pools 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;
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;
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_MBX_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_RRQ_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:
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);
dma_pool_destroy(phba->lpfc_nvmet_drb_pool);
phba->lpfc_nvmet_drb_pool = NULL;
dma_pool_destroy(phba->lpfc_drb_pool);
phba->lpfc_drb_pool = NULL;
dma_pool_destroy(phba->lpfc_hrb_pool);
phba->lpfc_hrb_pool = NULL;
dma_pool_destroy(phba->lpfc_hbq_pool);
phba->lpfc_hbq_pool = NULL;
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 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;
/* Free memory used in mailbox queue back to mailbox memory pool */
list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq, list) {
list_del(&mbox->list);
lpfc_mem_free_sli_mbox(phba, mbox);
}
/* Free memory used in mailbox cmpl list back to mailbox memory pool */
list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq_cmpl, list) {
list_del(&mbox->list);
lpfc_mem_free_sli_mbox(phba, mbox);
}
/* 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;
lpfc_mem_free_sli_mbox(phba, mbox);
psli->mbox_active = NULL;
}
/* Free and destroy all the allocated memory pools */
lpfc_mem_free(phba);
/* Free DMA buffer memory pool */
dma_pool_destroy(phba->lpfc_sg_dma_buf_pool);
phba->lpfc_sg_dma_buf_pool = NULL;
dma_pool_destroy(phba->lpfc_cmd_rsp_buf_pool);
phba->lpfc_cmd_rsp_buf_pool = NULL;
/* Free Congestion Data buffer */
if (phba->cgn_i) {
dma_free_coherent(&phba->pcidev->dev,
sizeof (struct lpfc_cgn_info),
phba->cgn_i->virt, phba->cgn_i->phys);
kfree(phba->cgn_i);
phba->cgn_i = NULL;
}
/* Free RX Monitor */
if (phba->rx_monitor) {
lpfc_rx_monitor_destroy_ring(phba->rx_monitor);
kfree(phba->rx_monitor);
phba->rx_monitor = NULL;
}
/* 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 .
*
* 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 (*dma_buf), 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 ) {
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);
(rqbp->rqb_free_buffer)(phba, rqb_entry);
} else {
list_add_tail(&rqb_entry->hbuf.list, &rqbp->rqb_buffer_list);
rqbp->buffer_count++;
}
spin_unlock_irqrestore(&phba->hbalock, flags);
}
Messung V0.5 in Prozent C=95 H=88 G=91
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-09-27)
¤
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