diff options
Diffstat (limited to 'drivers/scsi/qla4xxx/ql4_bsg.c')
| -rw-r--r-- | drivers/scsi/qla4xxx/ql4_bsg.c | 513 |
1 files changed, 513 insertions, 0 deletions
diff --git a/drivers/scsi/qla4xxx/ql4_bsg.c b/drivers/scsi/qla4xxx/ql4_bsg.c new file mode 100644 index 00000000000..8acdc582ff6 --- /dev/null +++ b/drivers/scsi/qla4xxx/ql4_bsg.c @@ -0,0 +1,513 @@ +/* + * QLogic iSCSI HBA Driver + * Copyright (c) 2011 QLogic Corporation + * + * See LICENSE.qla4xxx for copyright and licensing details. + */ + +#include "ql4_def.h" +#include "ql4_glbl.h" +#include "ql4_bsg.h" + +static int +qla4xxx_read_flash(struct bsg_job *bsg_job) +{ + struct Scsi_Host *host = iscsi_job_to_shost(bsg_job); + struct scsi_qla_host *ha = to_qla_host(host); + struct iscsi_bsg_reply *bsg_reply = bsg_job->reply; + struct iscsi_bsg_request *bsg_req = bsg_job->request; + uint32_t offset = 0; + uint32_t length = 0; + dma_addr_t flash_dma; + uint8_t *flash = NULL; + int rval = -EINVAL; + + bsg_reply->reply_payload_rcv_len = 0; + + if (unlikely(pci_channel_offline(ha->pdev))) + goto leave; + + if (ql4xxx_reset_active(ha)) { + ql4_printk(KERN_ERR, ha, "%s: reset active\n", __func__); + rval = -EBUSY; + goto leave; + } + + if (ha->flash_state != QLFLASH_WAITING) { + ql4_printk(KERN_ERR, ha, "%s: another flash operation " + "active\n", __func__); + rval = -EBUSY; + goto leave; + } + + ha->flash_state = QLFLASH_READING; + offset = bsg_req->rqst_data.h_vendor.vendor_cmd[1]; + length = bsg_job->reply_payload.payload_len; + + flash = dma_alloc_coherent(&ha->pdev->dev, length, &flash_dma, + GFP_KERNEL); + if (!flash) { + ql4_printk(KERN_ERR, ha, "%s: dma alloc failed for flash " + "data\n", __func__); + rval = -ENOMEM; + goto leave; + } + + rval = qla4xxx_get_flash(ha, flash_dma, offset, length); + if (rval) { + ql4_printk(KERN_ERR, ha, "%s: get flash failed\n", __func__); + bsg_reply->result = DID_ERROR << 16; + rval = -EIO; + } else { + bsg_reply->reply_payload_rcv_len = + sg_copy_from_buffer(bsg_job->reply_payload.sg_list, + bsg_job->reply_payload.sg_cnt, + flash, length); + bsg_reply->result = DID_OK << 16; + } + + bsg_job_done(bsg_job, bsg_reply->result, + bsg_reply->reply_payload_rcv_len); + dma_free_coherent(&ha->pdev->dev, length, flash, flash_dma); +leave: + ha->flash_state = QLFLASH_WAITING; + return rval; +} + +static int +qla4xxx_update_flash(struct bsg_job *bsg_job) +{ + struct Scsi_Host *host = iscsi_job_to_shost(bsg_job); + struct scsi_qla_host *ha = to_qla_host(host); + struct iscsi_bsg_reply *bsg_reply = bsg_job->reply; + struct iscsi_bsg_request *bsg_req = bsg_job->request; + uint32_t length = 0; + uint32_t offset = 0; + uint32_t options = 0; + dma_addr_t flash_dma; + uint8_t *flash = NULL; + int rval = -EINVAL; + + bsg_reply->reply_payload_rcv_len = 0; + + if (unlikely(pci_channel_offline(ha->pdev))) + goto leave; + + if (ql4xxx_reset_active(ha)) { + ql4_printk(KERN_ERR, ha, "%s: reset active\n", __func__); + rval = -EBUSY; + goto leave; + } + + if (ha->flash_state != QLFLASH_WAITING) { + ql4_printk(KERN_ERR, ha, "%s: another flash operation " + "active\n", __func__); + rval = -EBUSY; + goto leave; + } + + ha->flash_state = QLFLASH_WRITING; + length = bsg_job->request_payload.payload_len; + offset = bsg_req->rqst_data.h_vendor.vendor_cmd[1]; + options = bsg_req->rqst_data.h_vendor.vendor_cmd[2]; + + flash = dma_alloc_coherent(&ha->pdev->dev, length, &flash_dma, + GFP_KERNEL); + if (!flash) { + ql4_printk(KERN_ERR, ha, "%s: dma alloc failed for flash " + "data\n", __func__); + rval = -ENOMEM; + goto leave; + } + + sg_copy_to_buffer(bsg_job->request_payload.sg_list, + bsg_job->request_payload.sg_cnt, flash, length); + + rval = qla4xxx_set_flash(ha, flash_dma, offset, length, options); + if (rval) { + ql4_printk(KERN_ERR, ha, "%s: set flash failed\n", __func__); + bsg_reply->result = DID_ERROR << 16; + rval = -EIO; + } else + bsg_reply->result = DID_OK << 16; + + bsg_job_done(bsg_job, bsg_reply->result, + bsg_reply->reply_payload_rcv_len); + dma_free_coherent(&ha->pdev->dev, length, flash, flash_dma); +leave: + ha->flash_state = QLFLASH_WAITING; + return rval; +} + +static int +qla4xxx_get_acb_state(struct bsg_job *bsg_job) +{ + struct Scsi_Host *host = iscsi_job_to_shost(bsg_job); + struct scsi_qla_host *ha = to_qla_host(host); + struct iscsi_bsg_request *bsg_req = bsg_job->request; + struct iscsi_bsg_reply *bsg_reply = bsg_job->reply; + uint32_t status[MBOX_REG_COUNT]; + uint32_t acb_idx; + uint32_t ip_idx; + int rval = -EINVAL; + + bsg_reply->reply_payload_rcv_len = 0; + + if (unlikely(pci_channel_offline(ha->pdev))) + goto leave; + + /* Only 4022 and above adapters are supported */ + if (is_qla4010(ha)) + goto leave; + + if (ql4xxx_reset_active(ha)) { + ql4_printk(KERN_ERR, ha, "%s: reset active\n", __func__); + rval = -EBUSY; + goto leave; + } + + if (bsg_job->reply_payload.payload_len < sizeof(status)) { + ql4_printk(KERN_ERR, ha, "%s: invalid payload len %d\n", + __func__, bsg_job->reply_payload.payload_len); + rval = -EINVAL; + goto leave; + } + + acb_idx = bsg_req->rqst_data.h_vendor.vendor_cmd[1]; + ip_idx = bsg_req->rqst_data.h_vendor.vendor_cmd[2]; + + rval = qla4xxx_get_ip_state(ha, acb_idx, ip_idx, status); + if (rval) { + ql4_printk(KERN_ERR, ha, "%s: get ip state failed\n", + __func__); + bsg_reply->result = DID_ERROR << 16; + rval = -EIO; + } else { + bsg_reply->reply_payload_rcv_len = + sg_copy_from_buffer(bsg_job->reply_payload.sg_list, + bsg_job->reply_payload.sg_cnt, + status, sizeof(status)); + bsg_reply->result = DID_OK << 16; + } + + bsg_job_done(bsg_job, bsg_reply->result, + bsg_reply->reply_payload_rcv_len); +leave: + return rval; +} + +static int +qla4xxx_read_nvram(struct bsg_job *bsg_job) +{ + struct Scsi_Host *host = iscsi_job_to_shost(bsg_job); + struct scsi_qla_host *ha = to_qla_host(host); + struct iscsi_bsg_request *bsg_req = bsg_job->request; + struct iscsi_bsg_reply *bsg_reply = bsg_job->reply; + uint32_t offset = 0; + uint32_t len = 0; + uint32_t total_len = 0; + dma_addr_t nvram_dma; + uint8_t *nvram = NULL; + int rval = -EINVAL; + + bsg_reply->reply_payload_rcv_len = 0; + + if (unlikely(pci_channel_offline(ha->pdev))) + goto leave; + + /* Only 40xx adapters are supported */ + if (!(is_qla4010(ha) || is_qla4022(ha) || is_qla4032(ha))) + goto leave; + + if (ql4xxx_reset_active(ha)) { + ql4_printk(KERN_ERR, ha, "%s: reset active\n", __func__); + rval = -EBUSY; + goto leave; + } + + offset = bsg_req->rqst_data.h_vendor.vendor_cmd[1]; + len = bsg_job->reply_payload.payload_len; + total_len = offset + len; + + /* total len should not be greater than max NVRAM size */ + if ((is_qla4010(ha) && total_len > QL4010_NVRAM_SIZE) || + ((is_qla4022(ha) || is_qla4032(ha)) && + total_len > QL40X2_NVRAM_SIZE)) { + ql4_printk(KERN_ERR, ha, "%s: offset+len greater than max" + " nvram size, offset=%d len=%d\n", + __func__, offset, len); + goto leave; + } + + nvram = dma_alloc_coherent(&ha->pdev->dev, len, &nvram_dma, + GFP_KERNEL); + if (!nvram) { + ql4_printk(KERN_ERR, ha, "%s: dma alloc failed for nvram " + "data\n", __func__); + rval = -ENOMEM; + goto leave; + } + + rval = qla4xxx_get_nvram(ha, nvram_dma, offset, len); + if (rval) { + ql4_printk(KERN_ERR, ha, "%s: get nvram failed\n", __func__); + bsg_reply->result = DID_ERROR << 16; + rval = -EIO; + } else { + bsg_reply->reply_payload_rcv_len = + sg_copy_from_buffer(bsg_job->reply_payload.sg_list, + bsg_job->reply_payload.sg_cnt, + nvram, len); + bsg_reply->result = DID_OK << 16; + } + + bsg_job_done(bsg_job, bsg_reply->result, + bsg_reply->reply_payload_rcv_len); + dma_free_coherent(&ha->pdev->dev, len, nvram, nvram_dma); +leave: + return rval; +} + +static int +qla4xxx_update_nvram(struct bsg_job *bsg_job) +{ + struct Scsi_Host *host = iscsi_job_to_shost(bsg_job); + struct scsi_qla_host *ha = to_qla_host(host); + struct iscsi_bsg_request *bsg_req = bsg_job->request; + struct iscsi_bsg_reply *bsg_reply = bsg_job->reply; + uint32_t offset = 0; + uint32_t len = 0; + uint32_t total_len = 0; + dma_addr_t nvram_dma; + uint8_t *nvram = NULL; + int rval = -EINVAL; + + bsg_reply->reply_payload_rcv_len = 0; + + if (unlikely(pci_channel_offline(ha->pdev))) + goto leave; + + if (!(is_qla4010(ha) || is_qla4022(ha) || is_qla4032(ha))) + goto leave; + + if (ql4xxx_reset_active(ha)) { + ql4_printk(KERN_ERR, ha, "%s: reset active\n", __func__); + rval = -EBUSY; + goto leave; + } + + offset = bsg_req->rqst_data.h_vendor.vendor_cmd[1]; + len = bsg_job->request_payload.payload_len; + total_len = offset + len; + + /* total len should not be greater than max NVRAM size */ + if ((is_qla4010(ha) && total_len > QL4010_NVRAM_SIZE) || + ((is_qla4022(ha) || is_qla4032(ha)) && + total_len > QL40X2_NVRAM_SIZE)) { + ql4_printk(KERN_ERR, ha, "%s: offset+len greater than max" + " nvram size, offset=%d len=%d\n", + __func__, offset, len); + goto leave; + } + + nvram = dma_alloc_coherent(&ha->pdev->dev, len, &nvram_dma, + GFP_KERNEL); + if (!nvram) { + ql4_printk(KERN_ERR, ha, "%s: dma alloc failed for flash " + "data\n", __func__); + rval = -ENOMEM; + goto leave; + } + + sg_copy_to_buffer(bsg_job->request_payload.sg_list, + bsg_job->request_payload.sg_cnt, nvram, len); + + rval = qla4xxx_set_nvram(ha, nvram_dma, offset, len); + if (rval) { + ql4_printk(KERN_ERR, ha, "%s: set nvram failed\n", __func__); + bsg_reply->result = DID_ERROR << 16; + rval = -EIO; + } else + bsg_reply->result = DID_OK << 16; + + bsg_job_done(bsg_job, bsg_reply->result, + bsg_reply->reply_payload_rcv_len); + dma_free_coherent(&ha->pdev->dev, len, nvram, nvram_dma); +leave: + return rval; +} + +static int +qla4xxx_restore_defaults(struct bsg_job *bsg_job) +{ + struct Scsi_Host *host = iscsi_job_to_shost(bsg_job); + struct scsi_qla_host *ha = to_qla_host(host); + struct iscsi_bsg_request *bsg_req = bsg_job->request; + struct iscsi_bsg_reply *bsg_reply = bsg_job->reply; + uint32_t region = 0; + uint32_t field0 = 0; + uint32_t field1 = 0; + int rval = -EINVAL; + + bsg_reply->reply_payload_rcv_len = 0; + + if (unlikely(pci_channel_offline(ha->pdev))) + goto leave; + + if (is_qla4010(ha)) + goto leave; + + if (ql4xxx_reset_active(ha)) { + ql4_printk(KERN_ERR, ha, "%s: reset active\n", __func__); + rval = -EBUSY; + goto leave; + } + + region = bsg_req->rqst_data.h_vendor.vendor_cmd[1]; + field0 = bsg_req->rqst_data.h_vendor.vendor_cmd[2]; + field1 = bsg_req->rqst_data.h_vendor.vendor_cmd[3]; + + rval = qla4xxx_restore_factory_defaults(ha, region, field0, field1); + if (rval) { + ql4_printk(KERN_ERR, ha, "%s: set nvram failed\n", __func__); + bsg_reply->result = DID_ERROR << 16; + rval = -EIO; + } else + bsg_reply->result = DID_OK << 16; + + bsg_job_done(bsg_job, bsg_reply->result, + bsg_reply->reply_payload_rcv_len); +leave: + return rval; +} + +static int +qla4xxx_bsg_get_acb(struct bsg_job *bsg_job) +{ + struct Scsi_Host *host = iscsi_job_to_shost(bsg_job); + struct scsi_qla_host *ha = to_qla_host(host); + struct iscsi_bsg_request *bsg_req = bsg_job->request; + struct iscsi_bsg_reply *bsg_reply = bsg_job->reply; + uint32_t acb_type = 0; + uint32_t len = 0; + dma_addr_t acb_dma; + uint8_t *acb = NULL; + int rval = -EINVAL; + + bsg_reply->reply_payload_rcv_len = 0; + + if (unlikely(pci_channel_offline(ha->pdev))) + goto leave; + + /* Only 4022 and above adapters are supported */ + if (is_qla4010(ha)) + goto leave; + + if (ql4xxx_reset_active(ha)) { + ql4_printk(KERN_ERR, ha, "%s: reset active\n", __func__); + rval = -EBUSY; + goto leave; + } + + acb_type = bsg_req->rqst_data.h_vendor.vendor_cmd[1]; + len = bsg_job->reply_payload.payload_len; + if (len < sizeof(struct addr_ctrl_blk)) { + ql4_printk(KERN_ERR, ha, "%s: invalid acb len %d\n", + __func__, len); + rval = -EINVAL; + goto leave; + } + + acb = dma_alloc_coherent(&ha->pdev->dev, len, &acb_dma, GFP_KERNEL); + if (!acb) { + ql4_printk(KERN_ERR, ha, "%s: dma alloc failed for acb " + "data\n", __func__); + rval = -ENOMEM; + goto leave; + } + + rval = qla4xxx_get_acb(ha, acb_dma, acb_type, len); + if (rval) { + ql4_printk(KERN_ERR, ha, "%s: get acb failed\n", __func__); + bsg_reply->result = DID_ERROR << 16; + rval = -EIO; + } else { + bsg_reply->reply_payload_rcv_len = + sg_copy_from_buffer(bsg_job->reply_payload.sg_list, + bsg_job->reply_payload.sg_cnt, + acb, len); + bsg_reply->result = DID_OK << 16; + } + + bsg_job_done(bsg_job, bsg_reply->result, + bsg_reply->reply_payload_rcv_len); + dma_free_coherent(&ha->pdev->dev, len, acb, acb_dma); +leave: + return rval; +} + +/** + * qla4xxx_process_vendor_specific - handle vendor specific bsg request + * @job: iscsi_bsg_job to handle + **/ +int qla4xxx_process_vendor_specific(struct bsg_job *bsg_job) +{ + struct iscsi_bsg_reply *bsg_reply = bsg_job->reply; + struct iscsi_bsg_request *bsg_req = bsg_job->request; + struct Scsi_Host *host = iscsi_job_to_shost(bsg_job); + struct scsi_qla_host *ha = to_qla_host(host); + + switch (bsg_req->rqst_data.h_vendor.vendor_cmd[0]) { + case QLISCSI_VND_READ_FLASH: + return qla4xxx_read_flash(bsg_job); + + case QLISCSI_VND_UPDATE_FLASH: + return qla4xxx_update_flash(bsg_job); + + case QLISCSI_VND_GET_ACB_STATE: + return qla4xxx_get_acb_state(bsg_job); + + case QLISCSI_VND_READ_NVRAM: + return qla4xxx_read_nvram(bsg_job); + + case QLISCSI_VND_UPDATE_NVRAM: + return qla4xxx_update_nvram(bsg_job); + + case QLISCSI_VND_RESTORE_DEFAULTS: + return qla4xxx_restore_defaults(bsg_job); + + case QLISCSI_VND_GET_ACB: + return qla4xxx_bsg_get_acb(bsg_job); + + default: + ql4_printk(KERN_ERR, ha, "%s: invalid BSG vendor command: " + "0x%x\n", __func__, bsg_req->msgcode); + bsg_reply->result = (DID_ERROR << 16); + bsg_reply->reply_payload_rcv_len = 0; + bsg_job_done(bsg_job, bsg_reply->result, + bsg_reply->reply_payload_rcv_len); + return -ENOSYS; + } +} + +/** + * qla4xxx_bsg_request - handle bsg request from ISCSI transport + * @job: iscsi_bsg_job to handle + */ +int qla4xxx_bsg_request(struct bsg_job *bsg_job) +{ + struct iscsi_bsg_request *bsg_req = bsg_job->request; + struct Scsi_Host *host = iscsi_job_to_shost(bsg_job); + struct scsi_qla_host *ha = to_qla_host(host); + + switch (bsg_req->msgcode) { + case ISCSI_BSG_HST_VENDOR: + return qla4xxx_process_vendor_specific(bsg_job); + + default: + ql4_printk(KERN_ERR, ha, "%s: invalid BSG command: 0x%x\n", + __func__, bsg_req->msgcode); + } + + return -ENOSYS; +} |