/******************************************************************* * This file is part of the Emulex Linux Device Driver for * * Fibre Channel Host Bus Adapters. * * Copyright (C) 2017-2021 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 #include #include #include #include #include #include #include #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 */ 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; 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->ctx_buf); 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->ctx_buf); 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->ctx_buf); 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 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); }