/******************************************************************* * 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. *
*******************************************************************/
#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.
*/ staticvoid
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;
/** * 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;
/** * 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 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);
/* 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);
/** * 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; unsignedlong iflags; void *ret;
ret = dma_pool_alloc(phba->lpfc_mbuf_pool, GFP_KERNEL, handle);
/** * __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;
/** * 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)
{ unsignedlong iflags;
/** * 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;
/** * 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;
/** * 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;
/** * 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; unsignedlong 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; unsignedlong flags; int rc;
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