diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/message/fusion/mptsas.c | 79 | ||||
| -rw-r--r-- | drivers/scsi/libsas/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/scsi/libsas/sas_expander.c | 70 | ||||
| -rw-r--r-- | drivers/scsi/libsas/sas_host_smp.c | 106 | ||||
| -rw-r--r-- | drivers/scsi/libsas/sas_internal.h | 12 | ||||
| -rw-r--r-- | drivers/scsi/mpt3sas/mpt3sas_transport.c | 230 | ||||
| -rw-r--r-- | drivers/scsi/scsi_transport_sas.c | 118 |
7 files changed, 240 insertions, 376 deletions
diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c index 42ee70c23d9f..345f6035599e 100644 --- a/drivers/message/fusion/mptsas.c +++ b/drivers/message/fusion/mptsas.c @@ -2210,33 +2210,26 @@ mptsas_get_bay_identifier(struct sas_rphy *rphy) return rc; } -static int mptsas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, - struct request *req) +static void mptsas_smp_handler(struct bsg_job *job, struct Scsi_Host *shost, + struct sas_rphy *rphy) { MPT_ADAPTER *ioc = ((MPT_SCSI_HOST *) shost->hostdata)->ioc; MPT_FRAME_HDR *mf; SmpPassthroughRequest_t *smpreq; - struct request *rsp = req->next_rq; - int ret; int flagsLength; unsigned long timeleft; char *psge; - dma_addr_t dma_addr_in = 0; - dma_addr_t dma_addr_out = 0; u64 sas_address = 0; - - if (!rsp) { - printk(MYIOC_s_ERR_FMT "%s: the smp response space is missing\n", - ioc->name, __func__); - return -EINVAL; - } + unsigned int reslen = 0; + int ret = -EINVAL; /* do we need to support multiple segments? */ - if (bio_multiple_segments(req->bio) || - bio_multiple_segments(rsp->bio)) { + if (job->request_payload.sg_cnt > 1 || + job->reply_payload.sg_cnt > 1) { printk(MYIOC_s_ERR_FMT "%s: multiple segments req %u, rsp %u\n", - ioc->name, __func__, blk_rq_bytes(req), blk_rq_bytes(rsp)); - return -EINVAL; + ioc->name, __func__, job->request_payload.payload_len, + job->reply_payload.payload_len); + goto out; } ret = mutex_lock_interruptible(&ioc->sas_mgmt.mutex); @@ -2252,7 +2245,8 @@ static int mptsas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, smpreq = (SmpPassthroughRequest_t *)mf; memset(smpreq, 0, sizeof(*smpreq)); - smpreq->RequestDataLength = cpu_to_le16(blk_rq_bytes(req) - 4); + smpreq->RequestDataLength = + cpu_to_le16(job->request_payload.payload_len - 4); smpreq->Function = MPI_FUNCTION_SMP_PASSTHROUGH; if (rphy) @@ -2278,13 +2272,14 @@ static int mptsas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, MPI_SGE_FLAGS_END_OF_BUFFER | MPI_SGE_FLAGS_DIRECTION) << MPI_SGE_FLAGS_SHIFT; - flagsLength |= (blk_rq_bytes(req) - 4); - dma_addr_out = pci_map_single(ioc->pcidev, bio_data(req->bio), - blk_rq_bytes(req), PCI_DMA_BIDIRECTIONAL); - if (pci_dma_mapping_error(ioc->pcidev, dma_addr_out)) + if (!dma_map_sg(&ioc->pcidev->dev, job->request_payload.sg_list, + 1, PCI_DMA_BIDIRECTIONAL)) goto put_mf; - ioc->add_sge(psge, flagsLength, dma_addr_out); + + flagsLength |= (sg_dma_len(job->request_payload.sg_list) - 4); + ioc->add_sge(psge, flagsLength, + sg_dma_address(job->request_payload.sg_list)); psge += ioc->SGE_size; /* response */ @@ -2294,12 +2289,13 @@ static int mptsas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, MPI_SGE_FLAGS_END_OF_BUFFER; flagsLength = flagsLength << MPI_SGE_FLAGS_SHIFT; - flagsLength |= blk_rq_bytes(rsp) + 4; - dma_addr_in = pci_map_single(ioc->pcidev, bio_data(rsp->bio), - blk_rq_bytes(rsp), PCI_DMA_BIDIRECTIONAL); - if (pci_dma_mapping_error(ioc->pcidev, dma_addr_in)) - goto unmap; - ioc->add_sge(psge, flagsLength, dma_addr_in); + + if (!dma_map_sg(&ioc->pcidev->dev, job->reply_payload.sg_list, + 1, PCI_DMA_BIDIRECTIONAL)) + goto unmap_out; + flagsLength |= sg_dma_len(job->reply_payload.sg_list) + 4; + ioc->add_sge(psge, flagsLength, + sg_dma_address(job->reply_payload.sg_list)); INITIALIZE_MGMT_STATUS(ioc->sas_mgmt.status) mpt_put_msg_frame(mptsasMgmtCtx, ioc, mf); @@ -2310,10 +2306,10 @@ static int mptsas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, mpt_free_msg_frame(ioc, mf); mf = NULL; if (ioc->sas_mgmt.status & MPT_MGMT_STATUS_DID_IOCRESET) - goto unmap; + goto unmap_in; if (!timeleft) mpt_Soft_Hard_ResetHandler(ioc, CAN_SLEEP); - goto unmap; + goto unmap_in; } mf = NULL; @@ -2321,23 +2317,22 @@ static int mptsas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, SmpPassthroughReply_t *smprep; smprep = (SmpPassthroughReply_t *)ioc->sas_mgmt.reply; - memcpy(scsi_req(req)->sense, smprep, sizeof(*smprep)); - scsi_req(req)->sense_len = sizeof(*smprep); - scsi_req(req)->resid_len = 0; - scsi_req(rsp)->resid_len -= smprep->ResponseDataLength; + memcpy(job->reply, smprep, sizeof(*smprep)); + job->reply_len = sizeof(*smprep); + reslen = smprep->ResponseDataLength; } else { printk(MYIOC_s_ERR_FMT "%s: smp passthru reply failed to be returned\n", ioc->name, __func__); ret = -ENXIO; } -unmap: - if (dma_addr_out) - pci_unmap_single(ioc->pcidev, dma_addr_out, blk_rq_bytes(req), - PCI_DMA_BIDIRECTIONAL); - if (dma_addr_in) - pci_unmap_single(ioc->pcidev, dma_addr_in, blk_rq_bytes(rsp), - PCI_DMA_BIDIRECTIONAL); + +unmap_in: + dma_unmap_sg(&ioc->pcidev->dev, job->reply_payload.sg_list, 1, + PCI_DMA_BIDIRECTIONAL); +unmap_out: + dma_unmap_sg(&ioc->pcidev->dev, job->request_payload.sg_list, 1, + PCI_DMA_BIDIRECTIONAL); put_mf: if (mf) mpt_free_msg_frame(ioc, mf); @@ -2345,7 +2340,7 @@ out_unlock: CLEAR_MGMT_STATUS(ioc->sas_mgmt.status) mutex_unlock(&ioc->sas_mgmt.mutex); out: - return ret; + bsg_job_done(job, ret, reslen); } static struct sas_function_template mptsas_transport_functions = { diff --git a/drivers/scsi/libsas/Kconfig b/drivers/scsi/libsas/Kconfig index 9dafe64e7c7a..13739bfacc67 100644 --- a/drivers/scsi/libsas/Kconfig +++ b/drivers/scsi/libsas/Kconfig @@ -26,6 +26,7 @@ config SCSI_SAS_LIBSAS tristate "SAS Domain Transport Attributes" depends on SCSI select SCSI_SAS_ATTRS + select BLK_DEV_BSGLIB help This provides transport specific helpers for SAS drivers which use the domain device construct (like the aic94xxx). diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c index 570b2cb2da43..6b4fd2375178 100644 --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -64,8 +64,8 @@ static void smp_task_done(struct sas_task *task) /* Give it some long enough timeout. In seconds. */ #define SMP_TIMEOUT 10 -static int smp_execute_task(struct domain_device *dev, void *req, int req_size, - void *resp, int resp_size) +static int smp_execute_task_sg(struct domain_device *dev, + struct scatterlist *req, struct scatterlist *resp) { int res, retry; struct sas_task *task = NULL; @@ -86,8 +86,8 @@ static int smp_execute_task(struct domain_device *dev, void *req, int req_size, } task->dev = dev; task->task_proto = dev->tproto; - sg_init_one(&task->smp_task.smp_req, req, req_size); - sg_init_one(&task->smp_task.smp_resp, resp, resp_size); + task->smp_task.smp_req = *req; + task->smp_task.smp_resp = *resp; task->task_done = smp_task_done; @@ -151,6 +151,17 @@ static int smp_execute_task(struct domain_device *dev, void *req, int req_size, return res; } +static int smp_execute_task(struct domain_device *dev, void *req, int req_size, + void *resp, int resp_size) +{ + struct scatterlist req_sg; + struct scatterlist resp_sg; + + sg_init_one(&req_sg, req, req_size); + sg_init_one(&resp_sg, resp, resp_size); + return smp_execute_task_sg(dev, &req_sg, &resp_sg); +} + /* ---------- Allocations ---------- */ static inline void *alloc_smp_req(int size) @@ -2130,57 +2141,50 @@ int sas_ex_revalidate_domain(struct domain_device *port_dev) return res; } -int sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, - struct request *req) +void sas_smp_handler(struct bsg_job *job, struct Scsi_Host *shost, + struct sas_rphy *rphy) { struct domain_device *dev; - int ret, type; - struct request *rsp = req->next_rq; - - if (!rsp) { - printk("%s: space for a smp response is missing\n", - __func__); - return -EINVAL; - } + unsigned int reslen = 0; + int ret = -EINVAL; /* no rphy means no smp target support (ie aic94xx host) */ if (!rphy) - return sas_smp_host_handler(shost, req, rsp); - - type = rphy->identify.device_type; + return sas_smp_host_handler(job, shost); - if (type != SAS_EDGE_EXPANDER_DEVICE && - type != SAS_FANOUT_EXPANDER_DEVICE) { + switch (rphy->identify.device_type) { + case SAS_EDGE_EXPANDER_DEVICE: + case SAS_FANOUT_EXPANDER_DEVICE: + break; + default: printk("%s: can we send a smp request to a device?\n", __func__); - return -EINVAL; + goto out; } dev = sas_find_dev_by_rphy(rphy); if (!dev) { printk("%s: fail to find a domain_device?\n", __func__); - return -EINVAL; + goto out; } /* do we need to support multiple segments? */ - if (bio_multiple_segments(req->bio) || - bio_multiple_segments(rsp->bio)) { + if (job->request_payload.sg_cnt > 1 || + job->reply_payload.sg_cnt > 1) { printk("%s: multiple segments req %u, rsp %u\n", - __func__, blk_rq_bytes(req), blk_rq_bytes(rsp)); - return -EINVAL; + __func__, job->request_payload.payload_len, + job->reply_payload.payload_len); + goto out; } - ret = smp_execute_task(dev, bio_data(req->bio), blk_rq_bytes(req), - bio_data(rsp->bio), blk_rq_bytes(rsp)); + ret = smp_execute_task_sg(dev, job->request_payload.sg_list, + job->reply_payload.sg_list); if (ret > 0) { /* positive number is the untransferred residual */ - scsi_req(rsp)->resid_len = ret; - scsi_req(req)->resid_len = 0; + reslen = ret; ret = 0; - } else if (ret == 0) { - scsi_req(rsp)->resid_len = 0; - scsi_req(req)->resid_len = 0; } - return ret; +out: + bsg_job_done(job, ret, reslen); } diff --git a/drivers/scsi/libsas/sas_host_smp.c b/drivers/scsi/libsas/sas_host_smp.c index 45cbbc44f4d7..9ead93df3a6e 100644 --- a/drivers/scsi/libsas/sas_host_smp.c +++ b/drivers/scsi/libsas/sas_host_smp.c @@ -225,47 +225,36 @@ static void sas_phy_control(struct sas_ha_struct *sas_ha, u8 phy_id, resp_data[2] = SMP_RESP_FUNC_ACC; } -int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req, - struct request *rsp) +void sas_smp_host_handler(struct bsg_job *job, struct Scsi_Host *shost) { - u8 *req_data = NULL, *resp_data = NULL, *buf; struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost); + u8 *req_data, *resp_data; + unsigned int reslen = 0; int error = -EINVAL; /* eight is the minimum size for request and response frames */ - if (blk_rq_bytes(req) < 8 || blk_rq_bytes(rsp) < 8) + if (job->request_payload.payload_len < 8 || + job->reply_payload.payload_len < 8) goto out; - if (bio_offset(req->bio) + blk_rq_bytes(req) > PAGE_SIZE || - bio_offset(rsp->bio) + blk_rq_bytes(rsp) > PAGE_SIZE) { - shost_printk(KERN_ERR, shost, - "SMP request/response frame crosses page boundary"); + error = -ENOMEM; + req_data = kzalloc(job->request_payload.payload_len, GFP_KERNEL); + if (!req_data) goto out; - } - - req_data = kzalloc(blk_rq_bytes(req), GFP_KERNEL); + sg_copy_to_buffer(job->request_payload.sg_list, + job->request_payload.sg_cnt, req_data, + job->request_payload.payload_len); /* make sure frame can always be built ... we copy * back only the requested length */ - resp_data = kzalloc(max(blk_rq_bytes(rsp), 128U), GFP_KERNEL); - - if (!req_data || !resp_data) { - error = -ENOMEM; - goto out; - } - - local_irq_disable(); - buf = kmap_atomic(bio_page(req->bio)); - memcpy(req_data, buf, blk_rq_bytes(req)); - kunmap_atomic(buf - bio_offset(req->bio)); - local_irq_enable(); + resp_data = kzalloc(max(job->reply_payload.payload_len, 128U), + GFP_KERNEL); + if (!resp_data) + goto out_free_req; + error = -EINVAL; if (req_data[0] != SMP_REQUEST) - goto out; - - /* always succeeds ... even if we can't process the request - * the result is in the response frame */ - error = 0; + goto out_free_resp; /* set up default don't know response */ resp_data[0] = SMP_RESPONSE; @@ -274,20 +263,18 @@ int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req, switch (req_data[1]) { case SMP_REPORT_GENERAL: - scsi_req(req)->resid_len -= 8; - scsi_req(rsp)->resid_len -= 32; resp_data[2] = SMP_RESP_FUNC_ACC; resp_data[9] = sas_ha->num_phys; + reslen = 32; break; case SMP_REPORT_MANUF_INFO: - scsi_req(req)->resid_len -= 8; - scsi_req(rsp)->resid_len -= 64; resp_data[2] = SMP_RESP_FUNC_ACC; memcpy(resp_data + 12, shost->hostt->name, SAS_EXPANDER_VENDOR_ID_LEN); memcpy(resp_data + 20, "libsas virt phy", SAS_EXPANDER_PRODUCT_ID_LEN); + reslen = 64; break; case SMP_READ_GPIO_REG: @@ -295,14 +282,10 @@ int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req, break; case SMP_DISCOVER: - scsi_req(req)->resid_len -= 16; - if ((int)scsi_req(req)->resid_len < 0) { - scsi_req(req)->resid_len = 0; - error = -EINVAL; - goto out; - } - scsi_req(rsp)->resid_len -= 56; + if (job->request_payload.payload_len < 16) + goto out_free_resp; sas_host_smp_discover(sas_ha, resp_data, req_data[9]); + reslen = 56; break; case SMP_REPORT_PHY_ERR_LOG: @@ -311,14 +294,10 @@ int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req, break; case SMP_REPORT_PHY_SATA: - scsi_req(req)->resid_len -= 16; - if ((int)scsi_req(req)->resid_len < 0) { - scsi_req(req)->resid_len = 0; - error = -EINVAL; - goto out; - } - scsi_req(rsp)->resid_len -= 60; + if (job->request_payload.payload_len < 16) + goto out_free_resp; sas_report_phy_sata(sas_ha, resp_data, req_data[9]); + reslen = 60; break; case SMP_REPORT_ROUTE_INFO: @@ -330,16 +309,15 @@ int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req, const int base_frame_size = 11; int to_write = req_data[4]; - if (blk_rq_bytes(req) < base_frame_size + to_write * 4 || - scsi_req(req)->resid_len < base_frame_size + to_write * 4) { + if (job->request_payload.payload_len < + base_frame_size + to_write * 4) { resp_data[2] = SMP_RESP_INV_FRM_LEN; break; } to_write = sas_host_smp_write_gpio(sas_ha, resp_data, req_data[2], req_data[3], to_write, &req_data[8]); - scsi_req(req)->resid_len -= base_frame_size + to_write * 4; - scsi_req(rsp)->resid_len -= 8; + reslen = 8; break; } @@ -348,16 +326,12 @@ int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req, break; case SMP_PHY_CONTROL: - scsi_req(req)->resid_len -= 44; - if ((int)scsi_req(req)->resid_len < 0) { - scsi_req(req)->resid_len = 0; - error = -EINVAL; - goto out; - } - scsi_req(rsp)->resid_len -= 8; + if (job->request_payload.payload_len < 44) + goto out_free_resp; sas_phy_control(sas_ha, req_data[9], req_data[10], req_data[32] >> 4, req_data[33] >> 4, resp_data); + reslen = 8; break; case SMP_PHY_TEST_FUNCTION: @@ -369,15 +343,15 @@ int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req, break; } - local_irq_disable(); - buf = kmap_atomic(bio_page(rsp->bio)); - memcpy(buf, resp_data, blk_rq_bytes(rsp)); - flush_kernel_dcache_page(bio_page(rsp->bio)); - kunmap_atomic(buf - bio_offset(rsp->bio)); - local_irq_enable(); + sg_copy_from_buffer(job->reply_payload.sg_list, + job->reply_payload.sg_cnt, resp_data, + job->reply_payload.payload_len); - out: - kfree(req_data); + error = 0; +out_free_resp: kfree(resp_data); - return error; +out_free_req: + kfree(req_data); +out: + bsg_job_done(job, error, reslen); } diff --git a/drivers/scsi/libsas/sas_internal.h b/drivers/scsi/libsas/sas_internal.h index a216c957b639..c07e08136491 100644 --- a/drivers/scsi/libsas/sas_internal.h +++ b/drivers/scsi/libsas/sas_internal.h @@ -81,6 +81,8 @@ int sas_queue_work(struct sas_ha_struct *ha, struct sas_work *sw); int sas_notify_lldd_dev_found(struct domain_device *); void sas_notify_lldd_dev_gone(struct domain_device *); +void sas_smp_handler(struct bsg_job *job, struct Scsi_Host *shost, + struct sas_rphy *rphy); int sas_smp_phy_control(struct domain_device *dev, int phy_id, enum phy_func phy_func, struct sas_phy_linkrates *); int sas_smp_get_phy_events(struct sas_phy *phy); @@ -98,16 +100,14 @@ void sas_hae_reset(struct work_struct *work); void sas_free_device(struct kref *kref); #ifdef CONFIG_SCSI_SAS_HOST_SMP -extern int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req, - struct request *rsp); +extern void sas_smp_host_handler(struct bsg_job *job, struct Scsi_Host *shost); #else -static inline int sas_smp_host_handler(struct Scsi_Host *shost, - struct request *req, - struct request *rsp) +static inline void sas_smp_host_handler(struct bsg_job *job, + struct Scsi_Host *shost) { shost_printk(KERN_ERR, shost, "Cannot send SMP to a sas host (not enabled in CONFIG)\n"); - return -EINVAL; + bsg_job_done(job, -EINVAL, 0); } #endif diff --git a/drivers/scsi/mpt3sas/mpt3sas_transport.c b/drivers/scsi/mpt3sas/mpt3sas_transport.c index e7a7a704a315..d3940c5d079d 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_transport.c +++ b/drivers/scsi/mpt3sas/mpt3sas_transport.c @@ -1870,6 +1870,38 @@ _transport_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates) return rc; } +static int +_transport_map_smp_buffer(struct device *dev, struct bsg_buffer *buf, + dma_addr_t *dma_addr, size_t *dma_len, void **p) +{ + /* Check if the request is split across multiple segments */ + if (buf->sg_cnt > 1) { + *p = dma_alloc_coherent(dev, buf->payload_len, dma_addr, + GFP_KERNEL); + if (!*p) + return -ENOMEM; + *dma_len = buf->payload_len; + } else { + if (!dma_map_sg(dev, buf->sg_list, 1, DMA_BIDIRECTIONAL)) + return -ENOMEM; + *dma_addr = sg_dma_address(buf->sg_list); + *dma_len = sg_dma_len(buf->sg_list); + *p = NULL; + } + + return 0; +} + +static void +_transport_unmap_smp_buffer(struct device *dev, struct bsg_buffer *buf, + dma_addr_t dma_addr, void *p) +{ + if (p) + dma_free_coherent(dev, buf->payload_len, p, dma_addr); + else + dma_unmap_sg(dev, buf->sg_list, 1, DMA_BIDIRECTIONAL); +} + /** * _transport_smp_handler - transport portal for smp passthru * @shost: shost object @@ -1880,9 +1912,9 @@ _transport_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates) * Example: * smp_rep_general /sys/class/bsg/expander-5:0 */ -static int -_transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, - struct request *req) +static void +_transport_smp_handler(struct bsg_job *job, struct Scsi_Host *shost, + struct sas_rphy *rphy) { struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); Mpi2SmpPassthroughRequest_t *mpi_request; @@ -1891,33 +1923,25 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, u16 smid; u32 ioc_state; void *psge; - u8 issue_reset = 0; - dma_addr_t dma_addr_in = 0; - dma_addr_t dma_addr_out = 0; - dma_addr_t pci_dma_in = 0; - dma_addr_t pci_dma_out = 0; - void *pci_addr_in = NULL; - void *pci_addr_out = NULL; + dma_addr_t dma_addr_in; + dma_addr_t dma_addr_out; + void *addr_in = NULL; + void *addr_out = NULL; + size_t dma_len_in; + size_t dma_len_out; u16 wait_state_count; - struct request *rsp = req->next_rq; - struct bio_vec bvec; - struct bvec_iter iter; - - if (!rsp) { - pr_err(MPT3SAS_FMT "%s: the smp response space is missing\n", - ioc->name, __func__); - return -EINVAL; - } + unsigned int reslen = 0; if (ioc->shost_recovery || ioc->pci_error_recovery) { pr_info(MPT3SAS_FMT "%s: host reset in progress!\n", __func__, ioc->name); - return -EFAULT; + rc = -EFAULT; + goto out; } rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex); if (rc) - return rc; + goto out; if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) { pr_err(MPT3SAS_FMT "%s: transport_cmds in use\n", ioc->name, @@ -1927,58 +1951,20 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, } ioc->transport_cmds.status = MPT3_CMD_PENDING; - /* Check if the request is split across multiple segments */ - if (bio_multiple_segments(req->bio)) { - u32 offset = 0; - - /* Allocate memory and copy the request */ - pci_addr_out = pci_alloc_consistent(ioc->pdev, - blk_rq_bytes(req), &pci_dma_out); - if (!pci_addr_out) { - pr_info(MPT3SAS_FMT "%s(): PCI Addr out = NULL\n", - ioc->name, __func__); - rc = -ENOMEM; - goto out; - } - - bio_for_each_segment(bvec, req->bio, iter) { - memcpy(pci_addr_out + offset, - page_address(bvec.bv_page) + bvec.bv_offset, - bvec.bv_len); - offset += bvec.bv_len; - } - } else { - dma_addr_out = pci_map_single(ioc->pdev, bio_data(req->bio), - blk_rq_bytes(req), PCI_DMA_BIDIRECTIONAL); - if (pci_dma_mapping_error(ioc->pdev, dma_addr_out)) { - pr_info(MPT3SAS_FMT "%s(): DMA Addr out = NULL\n", - ioc->name, __func__); - rc = -ENOMEM; - goto free_pci; - } + rc = _transport_map_smp_buffer(&ioc->pdev->dev, &job->request_payload, + &dma_addr_out, &dma_len_out, &addr_out); + if (rc) + goto out; + if (addr_out) { + sg_copy_to_buffer(job->request_payload.sg_list, + job->request_payload.sg_cnt, addr_out, + job->request_payload.payload_len); } - /* Check if the response needs to be populated across - * multiple segments */ - if (bio_multiple_segments(rsp->bio)) { - pci_addr_in = pci_alloc_consistent(ioc->pdev, blk_rq_bytes(rsp), - &pci_dma_in); - if (!pci_addr_in) { - pr_info(MPT3SAS_FMT "%s(): PCI Addr in = NULL\n", - ioc->name, __func__); - rc = -ENOMEM; - goto unmap; - } - } else { - dma_addr_in = pci_map_single(ioc->pdev, bio_data(rsp->bio), - blk_rq_bytes(rsp), PCI_DMA_BIDIRECTIONAL); - if (pci_dma_mapping_error(ioc->pdev, dma_addr_in)) { - pr_info(MPT3SAS_FMT "%s(): DMA Addr in = NULL\n", - ioc->name, __func__); - rc = -ENOMEM; - goto unmap; - } - } + rc = _transport_map_smp_buffer(&ioc->pdev->dev, &job->reply_payload, + &dma_addr_in, &dma_len_in, &addr_in); + if (rc) + goto unmap_out; wait_state_count = 0; ioc_state = mpt3sas_base_get_iocstate(ioc, 1); @@ -1988,7 +1974,7 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, "%s: failed due to ioc not operational\n", ioc->name, __func__); rc = -EFAULT; - goto unmap; + goto unmap_in; } ssleep(1); ioc_state = mpt3sas_base_get_iocstate(ioc, 1); @@ -2005,7 +1991,7 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n", ioc->name, __func__); rc = -EAGAIN; - goto unmap; + goto unmap_in; } rc = 0; @@ -2018,15 +2004,11 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, mpi_request->SASAddress = (rphy) ? cpu_to_le64(rphy->identify.sas_address) : cpu_to_le64(ioc->sas_hba.sas_address); - mpi_request->RequestDataLength = cpu_to_le16(blk_rq_bytes(req) - 4); + mpi_request->RequestDataLength = cpu_to_le16(dma_len_out - 4); psge = &mpi_request->SGL; - if (bio_multiple_segments(req->bio)) - ioc->build_sg(ioc, psge, pci_dma_out, (blk_rq_bytes(req) - 4), - pci_dma_in, (blk_rq_bytes(rsp) + 4)); - else - ioc->build_sg(ioc, psge, dma_addr_out, (blk_rq_bytes(req) - 4), - dma_addr_in, (blk_rq_bytes(rsp) + 4)); + ioc->build_sg(ioc, psge, dma_addr_out, dma_len_out - 4, dma_addr_in, + dma_len_in - 4); dtransportprintk(ioc, pr_info(MPT3SAS_FMT "%s - sending smp request\n", ioc->name, __func__)); @@ -2040,83 +2022,51 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, __func__, ioc->name); _debug_dump_mf(mpi_request, sizeof(Mpi2SmpPassthroughRequest_t)/4); - if (!(ioc->transport_cmds.status & MPT3_CMD_RESET)) - issue_reset = 1; - goto issue_host_reset; + if (!(ioc->transport_cmds.status & MPT3_CMD_RESET)) { + mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER); + rc = -ETIMEDOUT; + goto unmap_in; + } } dtransportprintk(ioc, pr_info(MPT3SAS_FMT "%s - complete\n", ioc->name, __func__)); - if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) { - - mpi_reply = ioc->transport_cmds.reply; - - dtransportprintk(ioc, pr_info(MPT3SAS_FMT - "%s - reply data transfer size(%d)\n", - ioc->name, __func__, - le16_to_cpu(mpi_reply->ResponseDataLength))); - - memcpy(scsi_req(req)->sense, mpi_reply, sizeof(*mpi_reply)); - scsi_req(req)->sense_len = sizeof(*mpi_reply); - scsi_req(req)->resid_len = 0; - scsi_req(rsp)->resid_len -= - le16_to_cpu(mpi_reply->ResponseDataLength); - - /* check if the resp needs to be copied from the allocated - * pci mem */ - if (bio_multiple_segments(rsp->bio)) { - u32 offset = 0; - u32 bytes_to_copy = - le16_to_cpu(mpi_reply->ResponseDataLength); - bio_for_each_segment(bvec, rsp->bio, iter) { - if (bytes_to_copy <= bvec.bv_len) { - memcpy(page_address(bvec.bv_page) + - bvec.bv_offset, pci_addr_in + - offset, bytes_to_copy); - break; - } else { - memcpy(page_address(bvec.bv_page) + - bvec.bv_offset, pci_addr_in + - offset, bvec.bv_len); - bytes_to_copy -= bvec.bv_len; - } - offset += bvec.bv_len; - } - } - } else { + if (!(ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID)) { dtransportprintk(ioc, pr_info(MPT3SAS_FMT "%s - no reply\n", ioc->name, __func__)); rc = -ENXIO; + goto unmap_in; } - issue_host_reset: - if (issue_reset) { - mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER); - rc = -ETIMEDOUT; - } + mpi_reply = ioc->transport_cmds.reply; - unmap: - if (dma_addr_out) - pci_unmap_single(ioc->pdev, dma_addr_out, blk_rq_bytes(req), - PCI_DMA_BIDIRECTIONAL); - if (dma_addr_in) - pci_unmap_single(ioc->pdev, dma_addr_in, blk_rq_bytes(rsp), - PCI_DMA_BIDIRECTIONAL); + dtransportprintk(ioc, + pr_info(MPT3SAS_FMT "%s - reply data transfer size(%d)\n", + ioc->name, __func__, + le16_to_cpu(mpi_reply->ResponseDataLength))); - free_pci: - if (pci_addr_out) - pci_free_consistent(ioc->pdev, blk_rq_bytes(req), pci_addr_out, - pci_dma_out); + memcpy(job->reply, mpi_reply, sizeof(*mpi_reply)); + job->reply_len = sizeof(*mpi_reply); + reslen = le16_to_cpu(mpi_reply->ResponseDataLength); - if (pci_addr_in) - pci_free_consistent(ioc->pdev, blk_rq_bytes(rsp), pci_addr_in, - pci_dma_in); + if (addr_in) { + sg_copy_to_buffer(job->reply_payload.sg_list, + job->reply_payload.sg_cnt, addr_in, + job->reply_payload.payload_len); + } + rc = 0; + unmap_in: + _transport_unmap_smp_buffer(&ioc->pdev->dev, &job->reply_payload, + dma_addr_in, addr_in); + unmap_out: + _transport_unmap_smp_buffer(&ioc->pdev->dev, &job->request_payload, + dma_addr_out, addr_out); out: ioc->transport_cmds.status = MPT3_CMD_NOT_USED; mutex_unlock(&ioc->transport_cmds.mutex); - return rc; + bsg_job_done(job, rc, reslen); } struct sas_function_template mpt3sas_transport_functions = { diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c index e2e948f1ce28..319dff970237 100644 --- a/drivers/scsi/scsi_transport_sas.c +++ b/drivers/scsi/scsi_transport_sas.c @@ -169,39 +169,22 @@ static struct sas_end_device *sas_sdev_to_rdev(struct scsi_device *sdev) return rdev; } -static void sas_smp_request(struct request_queue *q, struct Scsi_Host *shost, - struct sas_rphy *rphy) +static int sas_smp_dispatch(struct bsg_job *job) { - struct request *req; - blk_status_t ret; - int (*handler)(struct Scsi_Host *, struct sas_rphy *, struct request *); + struct Scsi_Host *shost = dev_to_shost(job->dev); + struct sas_rphy *rphy = NULL; - while ((req = blk_fetch_request(q)) != NULL) { - spin_unlock_irq(q->queue_lock); + if (!scsi_is_host_device(job->dev)) + rphy = dev_to_rphy(job->dev); - scsi_req(req)->resid_len = blk_rq_bytes(req); - if (req->next_rq) - scsi_req(req->next_rq)->resid_len = - blk_rq_bytes(req->next_rq); - handler = to_sas_internal(shost->transportt)->f->smp_handler; - ret = handler(shost, rphy, req); - scsi_req(req)->result = ret; - - blk_end_request_all(req, 0); - - spin_lock_irq(q->queue_lock); + if (!job->req->next_rq) { + dev_warn(job->dev, "space for a smp response is missing\n"); + bsg_job_done(job, -EINVAL, 0); + return 0; } -} -static void sas_host_smp_request(struct request_queue *q) -{ - sas_smp_request(q, (struct Scsi_Host *)q->queuedata, NULL); -} - -static void sas_non_host_smp_request(struct request_queue *q) -{ - struct sas_rphy *rphy = q->queuedata; - sas_smp_request(q, rphy_to_shost(rphy), rphy); + to_sas_internal(shost->transportt)->f->smp_handler(job, shost, rphy); + return 0; } static void sas_host_release(struct device *dev) @@ -217,81 +200,36 @@ static void sas_host_release(struct device *dev) static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy) { struct request_queue *q; - int error; - struct device *dev; - char namebuf[20]; - const char *name; - void (*release)(struct device *); if (!to_sas_internal(shost->transportt)->f->smp_handler) { printk("%s can't handle SMP requests\n", shost->hostt->name); return 0; } - q = blk_alloc_queue(GFP_KERNEL); - if (!q) - return -ENOMEM; - q->initialize_rq_fn = scsi_initialize_rq; - q->cmd_size = sizeof(struct scsi_request); - if (rphy) { - q->request_fn = sas_non_host_smp_request; - dev = &rphy->dev; - name = dev_name(dev); - release = NULL; + q = bsg_setup_queue(&rphy->dev, dev_name(&rphy->dev), + sas_smp_dispatch, 0, NULL); + if (IS_ERR(q)) + return PTR_ERR(q); + rphy->q = q; } else { - q->request_fn = sas_host_smp_request; - dev = &shost->shost_gendev; - snprintf(namebuf, sizeof(namebuf), - "sas_host%d", shost->host_no); - name = namebuf; - release = sas_host_release; + char name[20]; + + snprintf(name, sizeof(name), "sas_host%d", shost->host_no); + q = bsg_setup_queue(&shost->shost_gendev, name, + sas_smp_dispatch, 0, sas_host_release); + if (IS_ERR(q)) + return PTR_ERR(q); + to_sas_host_attrs(shost)->q = q; } - error = blk_init_allocated_queue(q); - if (error) - goto out_cleanup_queue; /* * by default assume old behaviour and bounce for any highmem page */ blk_queue_bounce_limit(q, BLK_BOUNCE_HIGH); - - error = bsg_register_queue(q, dev, name, release); - if (error) - goto out_cleanup_queue; - - if (rphy) - rphy->q = q; - else - to_sas_host_attrs(shost)->q = q; - - if (rphy) - q->queuedata = rphy; - else - q->queuedata = shost; - queue_flag_set_unlocked(QUEUE_FLAG_BIDI, q); queue_flag_set_unlocked(QUEUE_FLAG_SCSI_PASSTHROUGH, q); return 0; - -out_cleanup_queue: - blk_cleanup_queue(q); - return error; -} - -static void sas_bsg_remove(struct Scsi_Host *shost, struct sas_rphy *rphy) -{ - struct request_queue *q; - - if (rphy) - q = rphy->q; - else - q = to_sas_host_attrs(shost)->q; - - if (!q) - return; - - bsg_unregister_queue(q); } /* @@ -321,9 +259,10 @@ static int sas_host_remove(struct transport_container *tc, struct device *dev, struct device *cdev) { struct Scsi_Host *shost = dev_to_shost(dev); + struct request_queue *q = to_sas_host_attrs(shost)->q; - sas_bsg_remove(shost, NULL); - + if (q) + bsg_unregister_queue(q); return 0; } @@ -1713,7 +1652,8 @@ sas_rphy_remove(struct sas_rphy *rphy) } sas_rphy_unlink(rphy); - sas_bsg_remove(NULL, rphy); + if (rphy->q) + bsg_unregister_queue(rphy->q); transport_remove_device(dev); device_del(dev); } |