diff options
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_mem.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_mem.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_mem.c b/drivers/scsi/lpfc/lpfc_mem.c index c65a1ec3d2e4..32db255f5216 100644 --- a/drivers/scsi/lpfc/lpfc_mem.c +++ b/drivers/scsi/lpfc/lpfc_mem.c @@ -40,6 +40,7 @@ #include "lpfc.h" #include "lpfc_scsi.h" #include "lpfc_nvme.h" +#include "lpfc_nvmet.h" #include "lpfc_crtn.h" #include "lpfc_logmsg.h" @@ -442,6 +443,44 @@ lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma) } /** + * 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 pci_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 = pci_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) +{ + pci_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 * @@ -554,6 +593,134 @@ lpfc_sli4_rb_free(struct lpfc_hba *phba, struct hbq_dmabuf *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; + struct lpfc_iocbq *nvmewqe; + union lpfc_wqe128 *wqe; + + dma_buf = kzalloc(sizeof(struct rqb_dmabuf), GFP_KERNEL); + if (!dma_buf) + return NULL; + + dma_buf->hbuf.virt = pci_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 = pci_pool_alloc(phba->lpfc_drb_pool, GFP_KERNEL, + &dma_buf->dbuf.phys); + if (!dma_buf->dbuf.virt) { + pci_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; + + dma_buf->context = kzalloc(sizeof(struct lpfc_nvmet_rcv_ctx), + GFP_KERNEL); + if (!dma_buf->context) { + pci_pool_free(phba->lpfc_drb_pool, dma_buf->dbuf.virt, + dma_buf->dbuf.phys); + pci_pool_free(phba->lpfc_hrb_pool, dma_buf->hbuf.virt, + dma_buf->hbuf.phys); + kfree(dma_buf); + return NULL; + } + + dma_buf->iocbq = lpfc_sli_get_iocbq(phba); + dma_buf->iocbq->iocb_flag = LPFC_IO_NVMET; + if (!dma_buf->iocbq) { + kfree(dma_buf->context); + pci_pool_free(phba->lpfc_drb_pool, dma_buf->dbuf.virt, + dma_buf->dbuf.phys); + pci_pool_free(phba->lpfc_hrb_pool, dma_buf->hbuf.virt, + dma_buf->hbuf.phys); + kfree(dma_buf); + lpfc_printf_log(phba, KERN_ERR, LOG_NVME, + "2621 Ran out of nvmet iocb/WQEs\n"); + return NULL; + } + nvmewqe = dma_buf->iocbq; + wqe = (union lpfc_wqe128 *)&nvmewqe->wqe; + /* Initialize WQE */ + memset(wqe, 0, sizeof(union lpfc_wqe)); + /* Word 7 */ + bf_set(wqe_ct, &wqe->generic.wqe_com, SLI4_CT_RPI); + bf_set(wqe_class, &wqe->generic.wqe_com, CLASS3); + bf_set(wqe_pu, &wqe->generic.wqe_com, 1); + /* Word 10 */ + bf_set(wqe_nvme, &wqe->fcp_tsend.wqe_com, 1); + bf_set(wqe_ebde_cnt, &wqe->generic.wqe_com, 0); + bf_set(wqe_qosd, &wqe->generic.wqe_com, 0); + + dma_buf->iocbq->context1 = NULL; + spin_lock(&phba->sli4_hba.sgl_list_lock); + dma_buf->sglq = __lpfc_sli_get_nvmet_sglq(phba, dma_buf->iocbq); + spin_unlock(&phba->sli4_hba.sgl_list_lock); + if (!dma_buf->sglq) { + lpfc_sli_release_iocbq(phba, dma_buf->iocbq); + kfree(dma_buf->context); + pci_pool_free(phba->lpfc_drb_pool, dma_buf->dbuf.virt, + dma_buf->dbuf.phys); + pci_pool_free(phba->lpfc_hrb_pool, dma_buf->hbuf.virt, + dma_buf->hbuf.phys); + kfree(dma_buf); + lpfc_printf_log(phba, KERN_ERR, LOG_NVME, + "6132 Ran out of nvmet XRIs\n"); + return NULL; + } + 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) +{ + unsigned long flags; + + __lpfc_clear_active_sglq(phba, dmab->sglq->sli4_lxritag); + dmab->sglq->state = SGL_FREED; + dmab->sglq->ndlp = NULL; + + spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, flags); + list_add_tail(&dmab->sglq->list, &phba->sli4_hba.lpfc_nvmet_sgl_list); + spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, flags); + + lpfc_sli_release_iocbq(phba, dmab->iocbq); + kfree(dmab->context); + pci_pool_free(phba->lpfc_hrb_pool, dmab->hbuf.virt, dmab->hbuf.phys); + pci_pool_free(phba->lpfc_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 |