/* $OpenBSD: vioscsi.c,v 1.22 2022/12/23 19:25:22 dv Exp $ */ /* * Copyright (c) 2017 Carlos Cardenas * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include #include #include #include #include #include #include #include "vmd.h" #include "vioscsi.h" #include "virtio.h" extern char *__progname; static void vioscsi_prepare_resp(struct virtio_scsi_res_hdr *resp, uint8_t vio_status, uint8_t scsi_status, uint8_t err_flags, uint8_t add_sense_code, uint8_t add_sense_code_qual) { /* Set lower 8 bits of status and response fields */ resp->response &= 0xFFFFFF00; resp->response |= vio_status; resp->status &= 0xFFFFFF00; resp->status |= scsi_status; resp->sense_len = 0; /* determine if we need to populate the sense field */ if (scsi_status == SCSI_CHECK) { /* * sense data is a 96 byte field. * We only need to use the first 14 bytes * - set the sense_len accordingly * - set error_code to Current Command * ref scsi/scsi_all.h:struct scsi_sense_data */ memset(resp->sense, 0, VIOSCSI_SENSE_LEN); resp->sense_len = RESP_SENSE_LEN; resp->sense[0] = SSD_ERRCODE_CURRENT; resp->sense[2] = err_flags; resp->sense[12] = add_sense_code; resp->sense[13] = add_sense_code_qual; } } static struct vring_desc* vioscsi_next_ring_desc(struct vring_desc* desc, struct vring_desc* cur, uint16_t *idx) { *idx = cur->next & VIOSCSI_QUEUE_MASK; return &desc[*idx]; } static void vioscsi_next_ring_item(struct vioscsi_dev *dev, struct vring_avail *avail, struct vring_used *used, struct vring_desc *desc, uint16_t idx) { used->ring[used->idx & VIOSCSI_QUEUE_MASK].id = idx; used->ring[used->idx & VIOSCSI_QUEUE_MASK].len = desc->len; __sync_synchronize(); used->idx++; dev->vq[dev->cfg.queue_notify].last_avail = avail->idx & VIOSCSI_QUEUE_MASK; } static const char * vioscsi_op_names(uint8_t type) { switch (type) { /* defined in scsi_all.h */ case TEST_UNIT_READY: return "TEST_UNIT_READY"; case REQUEST_SENSE: return "REQUEST_SENSE"; case INQUIRY: return "INQUIRY"; case MODE_SELECT: return "MODE_SELECT"; case RESERVE: return "RESERVE"; case RELEASE: return "RELEASE"; case MODE_SENSE: return "MODE_SENSE"; case START_STOP: return "START_STOP"; case RECEIVE_DIAGNOSTIC: return "RECEIVE_DIAGNOSTIC"; case SEND_DIAGNOSTIC: return "SEND_DIAGNOSTIC"; case PREVENT_ALLOW: return "PREVENT_ALLOW"; case POSITION_TO_ELEMENT: return "POSITION_TO_ELEMENT"; case WRITE_BUFFER: return "WRITE_BUFFER"; case READ_BUFFER: return "READ_BUFFER"; case CHANGE_DEFINITION: return "CHANGE_DEFINITION"; case MODE_SELECT_BIG: return "MODE_SELECT_BIG"; case MODE_SENSE_BIG: return "MODE_SENSE_BIG"; case REPORT_LUNS: return "REPORT_LUNS"; /* defined in scsi_disk.h */ case REASSIGN_BLOCKS: return "REASSIGN_BLOCKS"; case READ_COMMAND: return "READ_COMMAND"; case WRITE_COMMAND: return "WRITE_COMMAND"; case READ_CAPACITY: return "READ_CAPACITY"; case READ_CAPACITY_16: return "READ_CAPACITY_16"; case READ_10: return "READ_10"; case WRITE_10: return "WRITE_10"; case READ_12: return "READ_12"; case WRITE_12: return "WRITE_12"; case READ_16: return "READ_16"; case WRITE_16: return "WRITE_16"; case SYNCHRONIZE_CACHE: return "SYNCHRONIZE_CACHE"; case WRITE_SAME_10: return "WRITE_SAME_10"; case WRITE_SAME_16: return "WRITE_SAME_16"; /* defined in cd.h */ case READ_SUBCHANNEL: return "READ_SUBCHANNEL"; case READ_TOC: return "READ_TOC"; case READ_HEADER: return "READ_HEADER"; case PLAY: return "PLAY"; case PLAY_MSF: return "PLAY_MSF"; case PLAY_TRACK: return "PLAY_TRACK"; case PLAY_TRACK_REL: return "PLAY_TRACK_REL"; case PAUSE: return "PAUSE"; case READ_TRACK_INFO: return "READ_TRACK_INFO"; case CLOSE_TRACK: return "CLOSE_TRACK"; case BLANK: return "BLANK"; case PLAY_BIG: return "PLAY_BIG"; case LOAD_UNLOAD: return "LOAD_UNLOAD"; case PLAY_TRACK_REL_BIG: return "PLAY_TRACK_REL_BIG"; case SET_CD_SPEED: return "SET_CD_SPEED"; /* defined locally */ case READ_DISC_INFORMATION: return "READ_DISC_INFORMATION"; case GET_CONFIGURATION: return "GET_CONFIGURATION"; case MECHANISM_STATUS: return "MECHANISM_STATUS"; case GET_EVENT_STATUS_NOTIFICATION: return "GET_EVENT_STATUS_NOTIFICATION"; default: return "UNKNOWN"; } } static const char * vioscsi_reg_name(uint8_t reg) { switch (reg) { case VIRTIO_CONFIG_DEVICE_FEATURES: return "device feature"; case VIRTIO_CONFIG_GUEST_FEATURES: return "guest feature"; case VIRTIO_CONFIG_QUEUE_PFN: return "queue pfn"; case VIRTIO_CONFIG_QUEUE_SIZE: return "queue size"; case VIRTIO_CONFIG_QUEUE_SELECT: return "queue select"; case VIRTIO_CONFIG_QUEUE_NOTIFY: return "queue notify"; case VIRTIO_CONFIG_DEVICE_STATUS: return "device status"; case VIRTIO_CONFIG_ISR_STATUS: return "isr status"; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI: return "num_queues"; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 4: return "seg_max"; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 8: return "max_sectors"; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 12: return "cmd_per_lun"; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 16: return "event_info_size"; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 20: return "sense_size"; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 24: return "cdb_size"; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 28: return "max_channel"; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 30: return "max_target"; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 32: return "max_lun"; default: return "unknown"; } } static void vioscsi_free_info(struct ioinfo *info) { if (!info) return; free(info->buf); free(info); } static struct ioinfo * vioscsi_start_read(struct vioscsi_dev *dev, off_t block, size_t n_blocks) { struct ioinfo *info; /* Limit to 64M for now */ if (n_blocks * VIOSCSI_BLOCK_SIZE_CDROM > (1 << 26)) { log_warnx("%s: read size exceeded 64M", __func__); return (NULL); } info = calloc(1, sizeof(*info)); if (!info) goto nomem; info->buf = malloc(n_blocks * VIOSCSI_BLOCK_SIZE_CDROM); if (info->buf == NULL) goto nomem; info->len = n_blocks * VIOSCSI_BLOCK_SIZE_CDROM; info->offset = block * VIOSCSI_BLOCK_SIZE_CDROM; info->file = &dev->file; return info; nomem: free(info); log_warn("malloc error vioscsi read"); return (NULL); } static const uint8_t * vioscsi_finish_read(struct ioinfo *info) { struct virtio_backing *f; f = info->file; if (f->pread(f->p, info->buf, info->len, info->offset) != info->len) { info->error = errno; log_warn("vioscsi read error"); return NULL; } return info->buf; } static int vioscsi_handle_tur(struct vioscsi_dev *dev, struct virtio_scsi_req_hdr *req, struct virtio_vq_acct *acct) { int ret = 0; struct virtio_scsi_res_hdr resp; memset(&resp, 0, sizeof(resp)); /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); vioscsi_prepare_resp(&resp, VIRTIO_SCSI_S_OK, SCSI_OK, 0, 0, 0); if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to write OK resp status data @ 0x%llx", __func__, acct->resp_desc->addr); } else { ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); } return (ret); } static int vioscsi_handle_inquiry(struct vioscsi_dev *dev, struct virtio_scsi_req_hdr *req, struct virtio_vq_acct *acct) { int ret = 0; struct virtio_scsi_res_hdr resp; struct scsi_inquiry_data *inq_data; #if DEBUG struct scsi_inquiry *inq = (struct scsi_inquiry *)(req->cdb); log_debug("%s: INQ - EVPD %d PAGE_CODE 0x%08x LEN %d", __func__, inq->flags & SI_EVPD, inq->pagecode, _2btol(inq->length)); #endif /* DEBUG */ memset(&resp, 0, sizeof(resp)); vioscsi_prepare_resp(&resp, VIRTIO_SCSI_S_OK, SCSI_OK, 0, 0, 0); inq_data = calloc(1, sizeof(struct scsi_inquiry_data)); if (inq_data == NULL) { log_warnx("%s: cannot alloc inq_data", __func__); goto inq_out; } inq_data->device = T_CDROM; inq_data->dev_qual2 = SID_REMOVABLE; /* Leave version zero to say we don't comply */ inq_data->response_format = SID_SCSI2_RESPONSE; inq_data->additional_length = SID_SCSI2_ALEN; memcpy(inq_data->vendor, INQUIRY_VENDOR, INQUIRY_VENDOR_LEN); memcpy(inq_data->product, INQUIRY_PRODUCT, INQUIRY_PRODUCT_LEN); memcpy(inq_data->revision, INQUIRY_REVISION, INQUIRY_REVISION_LEN); /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); DPRINTF("%s: writing resp to 0x%llx size %d at local " "idx %d req_idx %d global_idx %d", __func__, acct->resp_desc->addr, acct->resp_desc->len, acct->resp_idx, acct->req_idx, acct->idx); if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to write OK resp status data @ 0x%llx", __func__, acct->resp_desc->addr); goto free_inq; } /* Move index for inquiry_data */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->resp_desc, &(acct->resp_idx)); DPRINTF("%s: writing inq_data to 0x%llx size %d at " "local idx %d req_idx %d global_idx %d", __func__, acct->resp_desc->addr, acct->resp_desc->len, acct->resp_idx, acct->req_idx, acct->idx); if (write_mem(acct->resp_desc->addr, inq_data, sizeof(struct scsi_inquiry_data))) { log_warnx("%s: unable to write inquiry" " response to gpa @ 0x%llx", __func__, acct->resp_desc->addr); } else { ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); } free_inq: free(inq_data); inq_out: return (ret); } static int vioscsi_handle_mode_sense(struct vioscsi_dev *dev, struct virtio_scsi_req_hdr *req, struct virtio_vq_acct *acct) { int ret = 0; struct virtio_scsi_res_hdr resp; uint8_t mode_page_ctl; uint8_t mode_page_code; uint8_t *mode_reply; uint8_t mode_reply_len = 0; struct scsi_mode_sense *mode_sense; memset(&resp, 0, sizeof(resp)); mode_sense = (struct scsi_mode_sense *)(req->cdb); mode_page_ctl = mode_sense->page & SMS_PAGE_CTRL; mode_page_code = mode_sense->page & SMS_PAGE_CODE; DPRINTF("%s: M_SENSE - DBD %d Page Ctrl 0x%x Code 0x%x Len %u", __func__, mode_sense->byte2 & SMS_DBD, mode_page_ctl, mode_page_code, mode_sense->length); if (mode_page_ctl == SMS_PAGE_CTRL_CURRENT && (mode_page_code == ERR_RECOVERY_PAGE || mode_page_code == CDVD_CAPABILITIES_PAGE)) { /* * mode sense header is 4 bytes followed * by a variable page * ERR_RECOVERY_PAGE is 12 bytes * CDVD_CAPABILITIES_PAGE is 32 bytes */ switch (mode_page_code) { case ERR_RECOVERY_PAGE: mode_reply_len = 16; mode_reply = (uint8_t*)calloc(mode_reply_len, sizeof(uint8_t)); if (mode_reply == NULL) goto mode_sense_out; /* set the page header */ *mode_reply = mode_reply_len - 1; *(mode_reply + 1) = MODE_MEDIUM_TYPE_CODE; /* set the page data, 7.3.2.1 mmc-5 */ *(mode_reply + 4) = MODE_ERR_RECOVERY_PAGE_CODE; *(mode_reply + 5) = MODE_ERR_RECOVERY_PAGE_LEN; *(mode_reply + 7) = MODE_READ_RETRY_COUNT; break; case CDVD_CAPABILITIES_PAGE: mode_reply_len = 36; mode_reply = (uint8_t*)calloc(mode_reply_len, sizeof(uint8_t)); if (mode_reply == NULL) goto mode_sense_out; /* set the page header */ *mode_reply = mode_reply_len - 1; *(mode_reply + 1) = MODE_MEDIUM_TYPE_CODE; /* set the page data, 6.3.11 mmc-3 */ *(mode_reply + 4) = MODE_CDVD_CAP_PAGE_CODE; *(mode_reply + 5) = mode_reply_len - 6; *(mode_reply + 6) = MODE_CDVD_CAP_READ_CODE; _lto2b(MODE_CDVD_CAP_NUM_LEVELS, mode_reply + 14); break; default: goto mode_sense_error; break; } /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); DPRINTF("%s: writing resp to 0x%llx size %d " "at local idx %d req_idx %d global_idx %d", __func__, acct->resp_desc->addr, mode_reply_len, acct->resp_idx, acct->req_idx, acct->idx); if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to write OK" " resp status data @ 0x%llx", __func__, acct->resp_desc->addr); free(mode_reply); goto mode_sense_out; } /* Move index for mode_reply */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->resp_desc, &(acct->resp_idx)); DPRINTF("%s: writing mode_reply to 0x%llx " "size %d at local idx %d req_idx %d " "global_idx %d", __func__, acct->resp_desc->addr, mode_reply_len, acct->resp_idx, acct->req_idx, acct->idx); if (write_mem(acct->resp_desc->addr, mode_reply, mode_reply_len)) { log_warnx("%s: unable to write " "mode_reply to gpa @ 0x%llx", __func__, acct->resp_desc->addr); free(mode_reply); goto mode_sense_out; } free(mode_reply); ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); } else { mode_sense_error: /* send back un-supported */ vioscsi_prepare_resp(&resp, VIRTIO_SCSI_S_OK, SCSI_CHECK, SKEY_ILLEGAL_REQUEST, SENSE_ILLEGAL_CDB_FIELD, SENSE_DEFAULT_ASCQ); /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to set ERR status data @ 0x%llx", __func__, acct->resp_desc->addr); goto mode_sense_out; } ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); } mode_sense_out: return (ret); } static int vioscsi_handle_mode_sense_big(struct vioscsi_dev *dev, struct virtio_scsi_req_hdr *req, struct virtio_vq_acct *acct) { int ret = 0; struct virtio_scsi_res_hdr resp; uint8_t mode_page_ctl; uint8_t mode_page_code; uint8_t *mode_reply; uint8_t mode_reply_len = 0; struct scsi_mode_sense_big *mode_sense_10; memset(&resp, 0, sizeof(resp)); mode_sense_10 = (struct scsi_mode_sense_big *)(req->cdb); mode_page_ctl = mode_sense_10->page & SMS_PAGE_CTRL; mode_page_code = mode_sense_10->page & SMS_PAGE_CODE; DPRINTF("%s: M_SENSE_10 - DBD %d Page Ctrl 0x%x Code 0x%x Len %u", __func__, mode_sense_10->byte2 & SMS_DBD, mode_page_ctl, mode_page_code, (uint16_t)_2btol(mode_sense_10->length)); if (mode_page_ctl == SMS_PAGE_CTRL_CURRENT && (mode_page_code == ERR_RECOVERY_PAGE || mode_page_code == CDVD_CAPABILITIES_PAGE)) { /* * mode sense header is 8 bytes followed * by a variable page * ERR_RECOVERY_PAGE is 12 bytes * CDVD_CAPABILITIES_PAGE is 32 bytes */ switch (mode_page_code) { case ERR_RECOVERY_PAGE: mode_reply_len = 20; mode_reply = (uint8_t*)calloc(mode_reply_len, sizeof(uint8_t)); if (mode_reply == NULL) goto mode_sense_big_out; /* set the page header */ _lto2b(mode_reply_len - 2, mode_reply); *(mode_reply + 2) = MODE_MEDIUM_TYPE_CODE; /* set the page data, 7.3.2.1 mmc-5 */ *(mode_reply + 8) = MODE_ERR_RECOVERY_PAGE_CODE; *(mode_reply + 9) = MODE_ERR_RECOVERY_PAGE_LEN; *(mode_reply + 11) = MODE_READ_RETRY_COUNT; break; case CDVD_CAPABILITIES_PAGE: mode_reply_len = 40; mode_reply = (uint8_t*)calloc(mode_reply_len, sizeof(uint8_t)); if (mode_reply == NULL) goto mode_sense_big_out; /* set the page header */ _lto2b(mode_reply_len - 2, mode_reply); *(mode_reply + 2) = MODE_MEDIUM_TYPE_CODE; /* set the page data, 6.3.11 mmc-3 */ *(mode_reply + 8) = MODE_CDVD_CAP_PAGE_CODE; *(mode_reply + 9) = mode_reply_len - 6; *(mode_reply + 10) = MODE_CDVD_CAP_READ_CODE; _lto2b(MODE_CDVD_CAP_NUM_LEVELS, mode_reply + 18); break; default: goto mode_sense_big_error; break; } /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); DPRINTF("%s: writing resp to 0x%llx size %d " "at local idx %d req_idx %d global_idx %d", __func__, acct->resp_desc->addr, acct->resp_desc->len, acct->resp_idx, acct->req_idx, acct->idx); if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to write OK" " resp status data @ 0x%llx", __func__, acct->resp_desc->addr); free(mode_reply); goto mode_sense_big_out; } /* Move index for mode_reply */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->resp_desc, &(acct->resp_idx)); DPRINTF("%s: writing mode_reply to 0x%llx " "size %d at local idx %d req_idx %d global_idx %d", __func__, acct->resp_desc->addr, mode_reply_len, acct->resp_idx, acct->req_idx, acct->idx); if (write_mem(acct->resp_desc->addr, mode_reply, mode_reply_len)) { log_warnx("%s: unable to write " "mode_reply to gpa @ 0x%llx", __func__, acct->resp_desc->addr); free(mode_reply); goto mode_sense_big_out; } free(mode_reply); ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); } else { mode_sense_big_error: /* send back un-supported */ vioscsi_prepare_resp(&resp, VIRTIO_SCSI_S_OK, SCSI_CHECK, SKEY_ILLEGAL_REQUEST, SENSE_ILLEGAL_CDB_FIELD, SENSE_DEFAULT_ASCQ); /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to set ERR status data @ 0x%llx", __func__, acct->resp_desc->addr); goto mode_sense_big_out; } ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); } mode_sense_big_out: return (ret); } static int vioscsi_handle_read_capacity(struct vioscsi_dev *dev, struct virtio_scsi_req_hdr *req, struct virtio_vq_acct *acct) { int ret = 0; struct virtio_scsi_res_hdr resp; struct scsi_read_cap_data *r_cap_data; #if DEBUG struct scsi_read_capacity *r_cap = (struct scsi_read_capacity *)(req->cdb); log_debug("%s: %s - Addr 0x%08x", __func__, vioscsi_op_names(r_cap->opcode), _4btol(r_cap->addr)); #endif /* DEBUG */ memset(&resp, 0, sizeof(resp)); vioscsi_prepare_resp(&resp, VIRTIO_SCSI_S_OK, SCSI_OK, 0, 0, 0); r_cap_data = calloc(1, sizeof(struct scsi_read_cap_data)); if (r_cap_data == NULL) { log_warnx("%s: cannot alloc r_cap_data", __func__); goto read_capacity_out; } DPRINTF("%s: ISO has %lld bytes and %lld blocks", __func__, dev->sz, dev->n_blocks); /* * determine if num blocks of iso image > UINT32_MAX * if it is, set addr to UINT32_MAX (0xffffffff) * indicating to hosts that READ_CAPACITY_16 should * be called to retrieve the full size */ if (dev->n_blocks >= UINT32_MAX) { _lto4b(UINT32_MAX, r_cap_data->addr); _lto4b(VIOSCSI_BLOCK_SIZE_CDROM, r_cap_data->length); log_warnx("%s: ISO sz %lld is bigger than " "UINT32_MAX %u, all data may not be read", __func__, dev->sz, UINT32_MAX); } else { _lto4b(dev->n_blocks - 1, r_cap_data->addr); _lto4b(VIOSCSI_BLOCK_SIZE_CDROM, r_cap_data->length); } /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); DPRINTF("%s: writing resp to 0x%llx size %d at local " "idx %d req_idx %d global_idx %d", __func__, acct->resp_desc->addr, acct->resp_desc->len, acct->resp_idx, acct->req_idx, acct->idx); if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to write OK resp status data @ 0x%llx", __func__, acct->resp_desc->addr); goto free_read_capacity; } /* Move index for r_cap_data */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->resp_desc, &(acct->resp_idx)); DPRINTF("%s: writing r_cap_data to 0x%llx size %d at " "local idx %d req_idx %d global_idx %d", __func__, acct->resp_desc->addr, acct->resp_desc->len, acct->resp_idx, acct->req_idx, acct->idx); if (write_mem(acct->resp_desc->addr, r_cap_data, sizeof(struct scsi_read_cap_data))) { log_warnx("%s: unable to write read_cap_data" " response to gpa @ 0x%llx", __func__, acct->resp_desc->addr); } else { ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); } free_read_capacity: free(r_cap_data); read_capacity_out: return (ret); } static int vioscsi_handle_read_capacity_16(struct vioscsi_dev *dev, struct virtio_scsi_req_hdr *req, struct virtio_vq_acct *acct) { int ret = 0; struct virtio_scsi_res_hdr resp; struct scsi_read_cap_data_16 *r_cap_data_16; #if DEBUG struct scsi_read_capacity_16 *r_cap_16 = (struct scsi_read_capacity_16 *)(req->cdb); log_debug("%s: %s - Addr 0x%016llx", __func__, vioscsi_op_names(r_cap_16->opcode), _8btol(r_cap_16->addr)); #endif /* DEBUG */ memset(&resp, 0, sizeof(resp)); vioscsi_prepare_resp(&resp, VIRTIO_SCSI_S_OK, SCSI_OK, 0, 0, 0); r_cap_data_16 = calloc(1, sizeof(struct scsi_read_cap_data_16)); if (r_cap_data_16 == NULL) { log_warnx("%s: cannot alloc r_cap_data_16", __func__); goto read_capacity_16_out; } DPRINTF("%s: ISO has %lld bytes and %lld blocks", __func__, dev->sz, dev->n_blocks); _lto8b(dev->n_blocks - 1, r_cap_data_16->addr); _lto4b(VIOSCSI_BLOCK_SIZE_CDROM, r_cap_data_16->length); /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); DPRINTF("%s: writing resp to 0x%llx size %d at local " "idx %d req_idx %d global_idx %d", __func__, acct->resp_desc->addr, acct->resp_desc->len, acct->resp_idx, acct->req_idx, acct->idx); if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to write OK resp status " "data @ 0x%llx", __func__, acct->resp_desc->addr); goto free_read_capacity_16; } /* Move index for r_cap_data_16 */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->resp_desc, &(acct->resp_idx)); DPRINTF("%s: writing r_cap_data_16 to 0x%llx size %d " "at local idx %d req_idx %d global_idx %d", __func__, acct->resp_desc->addr, acct->resp_desc->len, acct->resp_idx, acct->req_idx, acct->idx); if (write_mem(acct->resp_desc->addr, r_cap_data_16, sizeof(struct scsi_read_cap_data_16))) { log_warnx("%s: unable to write read_cap_data_16" " response to gpa @ 0x%llx", __func__, acct->resp_desc->addr); } else { ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); } free_read_capacity_16: free(r_cap_data_16); read_capacity_16_out: return (ret); } static int vioscsi_handle_report_luns(struct vioscsi_dev *dev, struct virtio_scsi_req_hdr *req, struct virtio_vq_acct *acct) { int ret = 0; struct virtio_scsi_res_hdr resp; uint32_t rpl_length; struct scsi_report_luns *rpl; struct vioscsi_report_luns_data *reply_rpl; memset(&resp, 0, sizeof(resp)); rpl = (struct scsi_report_luns *)(req->cdb); rpl_length = _4btol(rpl->length); DPRINTF("%s: REPORT_LUNS Report 0x%x Length %d", __func__, rpl->selectreport, rpl_length); if (rpl_length < RPL_MIN_SIZE) { DPRINTF("%s: RPL_Length %d < %d (RPL_MIN_SIZE)", __func__, rpl_length, RPL_MIN_SIZE); vioscsi_prepare_resp(&resp, VIRTIO_SCSI_S_OK, SCSI_CHECK, SKEY_ILLEGAL_REQUEST, SENSE_ILLEGAL_CDB_FIELD, SENSE_DEFAULT_ASCQ); /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to set ERR " "status data @ 0x%llx", __func__, acct->resp_desc->addr); } else { ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); } goto rpl_out; } reply_rpl = calloc(1, sizeof(struct vioscsi_report_luns_data)); if (reply_rpl == NULL) { log_warnx("%s: cannot alloc reply_rpl", __func__); goto rpl_out; } _lto4b(RPL_SINGLE_LUN, reply_rpl->length); memcpy(reply_rpl->lun, req->lun, RPL_SINGLE_LUN); vioscsi_prepare_resp(&resp, VIRTIO_SCSI_S_OK, SCSI_OK, 0, 0, 0); /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); DPRINTF("%s: writing resp to 0x%llx size %d at local " "idx %d req_idx %d global_idx %d", __func__, acct->resp_desc->addr, acct->resp_desc->len, acct->resp_idx, acct->req_idx, acct->idx); if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to write OK resp status data @ 0x%llx", __func__, acct->resp_desc->addr); goto free_rpl; } /* Move index for reply_rpl */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->resp_desc, &(acct->resp_idx)); DPRINTF("%s: writing reply_rpl to 0x%llx size %d at " "local idx %d req_idx %d global_idx %d", __func__, acct->resp_desc->addr, acct->resp_desc->len, acct->resp_idx, acct->req_idx, acct->idx); if (write_mem(acct->resp_desc->addr, reply_rpl, sizeof(struct vioscsi_report_luns_data))) { log_warnx("%s: unable to write reply_rpl" " response to gpa @ 0x%llx", __func__, acct->resp_desc->addr); } else { ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); } free_rpl: free(reply_rpl); rpl_out: return (ret); } static int vioscsi_handle_read_6(struct vioscsi_dev *dev, struct virtio_scsi_req_hdr *req, struct virtio_vq_acct *acct) { int ret = 0; struct virtio_scsi_res_hdr resp; const uint8_t *read_buf; uint32_t read_lba; struct ioinfo *info; struct scsi_rw *read_6; memset(&resp, 0, sizeof(resp)); read_6 = (struct scsi_rw *)(req->cdb); read_lba = ((read_6->addr[0] & SRW_TOPADDR) << 16 ) | (read_6->addr[1] << 8) | read_6->addr[2]; DPRINTF("%s: READ Addr 0x%08x Len %d (%d)", __func__, read_lba, read_6->length, read_6->length * dev->max_xfer); /* check if lba is in range */ if (read_lba > dev->n_blocks - 1) { DPRINTF("%s: requested block out of range req: %ud max: %lld", __func__, read_lba, dev->n_blocks); vioscsi_prepare_resp(&resp, VIRTIO_SCSI_S_OK, SCSI_CHECK, SKEY_ILLEGAL_REQUEST, SENSE_LBA_OUT_OF_RANGE, SENSE_DEFAULT_ASCQ); /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to set ERR " "status data @ 0x%llx", __func__, acct->resp_desc->addr); } else { ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); } goto read_6_out; } info = vioscsi_start_read(dev, read_lba, read_6->length); if (info == NULL) { log_warnx("%s: cannot alloc for read", __func__); goto read_6_out; } /* read block */ read_buf = vioscsi_finish_read(info); if (read_buf == NULL) { log_warnx("%s: error reading position %ud", __func__, read_lba); vioscsi_prepare_resp(&resp, VIRTIO_SCSI_S_OK, SCSI_CHECK, SKEY_MEDIUM_ERROR, SENSE_MEDIUM_NOT_PRESENT, SENSE_DEFAULT_ASCQ); /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to set ERR " "status data @ 0x%llx", __func__, acct->resp_desc->addr); } else { ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); } goto free_read_6; } vioscsi_prepare_resp(&resp, VIRTIO_SCSI_S_OK, SCSI_OK, 0, 0, 0); /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); DPRINTF("%s: writing resp to 0x%llx size %d at local " "idx %d req_idx %d global_idx %d", __func__, acct->resp_desc->addr, acct->resp_desc->len, acct->resp_idx, acct->req_idx, acct->idx); if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to write OK resp status " "data @ 0x%llx", __func__, acct->resp_desc->addr); goto free_read_6; } /* Move index for read_buf */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->resp_desc, &(acct->resp_idx)); DPRINTF("%s: writing read_buf to 0x%llx size %d at " "local idx %d req_idx %d global_idx %d", __func__, acct->resp_desc->addr, acct->resp_desc->len, acct->resp_idx, acct->req_idx, acct->idx); if (write_mem(acct->resp_desc->addr, read_buf, info->len)) { log_warnx("%s: unable to write read_buf to gpa @ 0x%llx", __func__, acct->resp_desc->addr); } else { ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); } free_read_6: vioscsi_free_info(info); read_6_out: return (ret); } static int vioscsi_handle_read_10(struct vioscsi_dev *dev, struct virtio_scsi_req_hdr *req, struct virtio_vq_acct *acct) { int ret = 0; struct virtio_scsi_res_hdr resp; const uint8_t *read_buf; uint32_t read_lba; uint16_t read_10_len; off_t chunk_offset; struct ioinfo *info; struct scsi_rw_10 *read_10; size_t chunk_len = 0; memset(&resp, 0, sizeof(resp)); read_10 = (struct scsi_rw_10 *)(req->cdb); read_lba = _4btol(read_10->addr); read_10_len = _2btol(read_10->length); chunk_offset = 0; DPRINTF("%s: READ_10 Addr 0x%08x Len %d (%d)", __func__, read_lba, read_10_len, read_10_len * dev->max_xfer); /* check if lba is in range */ if (read_lba > dev->n_blocks - 1) { DPRINTF("%s: requested block out of range req: %ud max: %lld", __func__, read_lba, dev->n_blocks); vioscsi_prepare_resp(&resp, VIRTIO_SCSI_S_OK, SCSI_CHECK, SKEY_ILLEGAL_REQUEST, SENSE_LBA_OUT_OF_RANGE, SENSE_DEFAULT_ASCQ); /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to set ERR status data @ 0x%llx", __func__, acct->resp_desc->addr); } else { ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); } goto read_10_out; } info = vioscsi_start_read(dev, read_lba, read_10_len); if (info == NULL) { log_warnx("%s: cannot alloc for read", __func__); goto read_10_out; } /* read block */ read_buf = vioscsi_finish_read(info); if (read_buf == NULL) { log_warnx("%s: error reading position %ud", __func__, read_lba); vioscsi_prepare_resp(&resp, VIRTIO_SCSI_S_OK, SCSI_CHECK, SKEY_MEDIUM_ERROR, SENSE_MEDIUM_NOT_PRESENT, SENSE_DEFAULT_ASCQ); /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to set ERR status data @ 0x%llx", __func__, acct->resp_desc->addr); } else { ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); } goto free_read_10; } vioscsi_prepare_resp(&resp, VIRTIO_SCSI_S_OK, SCSI_OK, 0, 0, 0); /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); DPRINTF("%s: writing resp to 0x%llx size %d at local " "idx %d req_idx %d global_idx %d", __func__, acct->resp_desc->addr, acct->resp_desc->len, acct->resp_idx, acct->req_idx, acct->idx); if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to write OK resp status " "data @ 0x%llx", __func__, acct->resp_desc->addr); goto free_read_10; } /* * Perform possible chunking of writes of read_buf * based on the segment length allocated by the host. * At least one write will be performed. * If chunk_offset == info->len, no more writes */ do { /* Move index for read_buf */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->resp_desc, &(acct->resp_idx)); DPRINTF("%s: writing read_buf to 0x%llx size " "%d at local idx %d req_idx %d global_idx %d", __func__, acct->resp_desc->addr, acct->resp_desc->len, acct->resp_idx, acct->req_idx, acct->idx); /* Check we don't read beyond read_buf boundaries. */ if (acct->resp_desc->len > info->len - chunk_offset) { log_warnx("%s: descriptor length beyond read_buf len", __func__); chunk_len = info->len - chunk_offset; } else chunk_len = acct->resp_desc->len; if (write_mem(acct->resp_desc->addr, read_buf + chunk_offset, chunk_len)) { log_warnx("%s: unable to write read_buf" " to gpa @ 0x%llx", __func__, acct->resp_desc->addr); goto free_read_10; } chunk_offset += acct->resp_desc->len; } while (chunk_offset < info->len); ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); free_read_10: vioscsi_free_info(info); read_10_out: return (ret); } static int vioscsi_handle_prevent_allow(struct vioscsi_dev *dev, struct virtio_scsi_req_hdr *req, struct virtio_vq_acct *acct) { int ret = 0; struct virtio_scsi_res_hdr resp; memset(&resp, 0, sizeof(resp)); /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); vioscsi_prepare_resp(&resp, VIRTIO_SCSI_S_OK, SCSI_OK, 0, 0, 0); if (dev->locked) { DPRINTF("%s: unlocking medium", __func__); } else { DPRINTF("%s: locking medium", __func__); } dev->locked = dev->locked ? 0 : 1; if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to write OK resp status data @ 0x%llx", __func__, acct->resp_desc->addr); } else { ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); } return (ret); } static int vioscsi_handle_mechanism_status(struct vioscsi_dev *dev, struct virtio_scsi_req_hdr *req, struct virtio_vq_acct *acct) { int ret = 0; struct virtio_scsi_res_hdr resp; struct scsi_mechanism_status_header *mech_status_header; DPRINTF("%s: MECH_STATUS Len %u", __func__, _2btol(((struct scsi_mechanism_status *)(req->cdb))->length)); mech_status_header = calloc(1, sizeof(struct scsi_mechanism_status_header)); if (mech_status_header == NULL) goto mech_out; /* return a 0 header since we are not a changer */ memset(&resp, 0, sizeof(resp)); vioscsi_prepare_resp(&resp, VIRTIO_SCSI_S_OK, SCSI_OK, 0, 0, 0); /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to set ERR status data @ 0x%llx", __func__, acct->resp_desc->addr); goto free_mech; } /* Move index for mech_status_header */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->resp_desc, &(acct->resp_idx)); if (write_mem(acct->resp_desc->addr, mech_status_header, sizeof(struct scsi_mechanism_status_header))) { log_warnx("%s: unable to write " "mech_status_header response to " "gpa @ 0x%llx", __func__, acct->resp_desc->addr); } else { ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); } free_mech: free(mech_status_header); mech_out: return (ret); } static int vioscsi_handle_read_toc(struct vioscsi_dev *dev, struct virtio_scsi_req_hdr *req, struct virtio_vq_acct *acct) { int ret = 0; struct virtio_scsi_res_hdr resp; uint16_t toc_data_len; uint8_t toc_data[TOC_DATA_SIZE]; uint8_t *toc_data_p; struct scsi_read_toc *toc = (struct scsi_read_toc *)(req->cdb); DPRINTF("%s: %s - MSF %d Track 0x%02x Addr 0x%04x", __func__, vioscsi_op_names(toc->opcode), ((toc->byte2 >> 1) & 1), toc->from_track, _2btol(toc->data_len)); /* Tracks should be 0, 1, or LEAD_OUT_TRACK, 0xaa */ if (toc->from_track > 1 && toc->from_track != READ_TOC_LEAD_OUT_TRACK) { /* illegal request */ log_warnx("%s: illegal request Track 0x%02x", __func__, toc->from_track); memset(&resp, 0, sizeof(resp)); vioscsi_prepare_resp(&resp, VIRTIO_SCSI_S_OK, SCSI_CHECK, SKEY_ILLEGAL_REQUEST, SENSE_ILLEGAL_CDB_FIELD, SENSE_DEFAULT_ASCQ); /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to set ERR status data @ 0x%llx", __func__, acct->resp_desc->addr); goto read_toc_out; } ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); goto read_toc_out; } /* * toc_data is defined as: * [0-1]: TOC Data Length, typically 0x1a * [2]: First Track, 1 * [3]: Last Track, 1 * * Track 1 Descriptor * [0]: Reserved, 0 * [1]: ADR,Control, 0x14 * [2]: Track #, 1 * [3]: Reserved, 0 * [4-7]: Track Start Address, LBA * * Track 0xaa (Lead Out) Descriptor * [0]: Reserved, 0 * [1]: ADR,Control, 0x14 * [2]: Track #, 0xaa * [3]: Reserved, 0 * [4-7]: Track Start Address, LBA */ memset(toc_data, 0, sizeof(toc_data)); toc_data_p = toc_data + 2; *toc_data_p++ = READ_TOC_START_TRACK; *toc_data_p++ = READ_TOC_LAST_TRACK; if (toc->from_track <= 1) { /* first track descriptor */ *toc_data_p++ = 0x0; *toc_data_p++ = READ_TOC_ADR_CTL; *toc_data_p++ = READ_TOC_START_TRACK; *toc_data_p++ = 0x0; /* start addr for first track is 0 */ *toc_data_p++ = 0x0; *toc_data_p++ = 0x0; *toc_data_p++ = 0x0; *toc_data_p++ = 0x0; } /* last track descriptor */ *toc_data_p++ = 0x0; *toc_data_p++ = READ_TOC_ADR_CTL; *toc_data_p++ = READ_TOC_LEAD_OUT_TRACK; *toc_data_p++ = 0x0; _lto4b((uint32_t)dev->n_blocks, toc_data_p); toc_data_p += 4; toc_data_len = toc_data_p - toc_data; _lto2b((uint32_t)toc_data_len - 2, toc_data); vioscsi_prepare_resp(&resp, VIRTIO_SCSI_S_OK, SCSI_OK, 0, 0, 0); /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); DPRINTF("%s: writing resp to 0x%llx size %d at local " "idx %d req_idx %d global_idx %d", __func__, acct->resp_desc->addr, acct->resp_desc->len, acct->resp_idx, acct->req_idx, acct->idx); if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to write OK resp status data @ 0x%llx", __func__, acct->resp_desc->addr); goto read_toc_out; } /* Move index for toc descriptor */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->resp_desc, &(acct->resp_idx)); DPRINTF("%s: writing toc_data to 0x%llx size %d at " "local idx %d req_idx %d global_idx %d", __func__, acct->resp_desc->addr, acct->resp_desc->len, acct->resp_idx, acct->req_idx, acct->idx); if (write_mem(acct->resp_desc->addr, toc_data, sizeof(toc_data))) { log_warnx("%s: unable to write toc descriptor data @ 0x%llx", __func__, acct->resp_desc->addr); } else { ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); } read_toc_out: return (ret); } static int vioscsi_handle_read_disc_info(struct vioscsi_dev *dev, struct virtio_scsi_req_hdr *req, struct virtio_vq_acct *acct) { int ret = 0; struct virtio_scsi_res_hdr resp; DPRINTF("%s: Disc Info %x", __func__, ((struct scsi_read_disc_information *)(req->cdb))->byte2); /* send back unsupported */ memset(&resp, 0, sizeof(resp)); vioscsi_prepare_resp(&resp, VIRTIO_SCSI_S_OK, SCSI_CHECK, SKEY_ILLEGAL_REQUEST, SENSE_ILLEGAL_CDB_FIELD, SENSE_DEFAULT_ASCQ); /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to set ERR status data @ 0x%llx", __func__, acct->resp_desc->addr); } else { ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); } return (ret); } static int vioscsi_handle_gesn(struct vioscsi_dev *dev, struct virtio_scsi_req_hdr *req, struct virtio_vq_acct *acct) { int ret = 0; struct virtio_scsi_res_hdr resp; uint8_t gesn_reply[GESN_SIZE]; struct scsi_gesn *gesn; struct scsi_gesn_event_header *gesn_event_header; struct scsi_gesn_power_event *gesn_power_event; memset(&resp, 0, sizeof(resp)); gesn = (struct scsi_gesn *)(req->cdb); DPRINTF("%s: GESN Method %s", __func__, gesn->byte2 ? "Polling" : "Asynchronous"); if (gesn->byte2 == 0) { /* we don't support asynchronous */ vioscsi_prepare_resp(&resp, VIRTIO_SCSI_S_OK, SCSI_CHECK, SKEY_ILLEGAL_REQUEST, SENSE_ILLEGAL_CDB_FIELD, SENSE_DEFAULT_ASCQ); /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to set ERR status data @ 0x%llx", __func__, acct->resp_desc->addr); goto gesn_out; } ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); goto gesn_out; } memset(gesn_reply, 0, sizeof(gesn_reply)); gesn_event_header = (struct scsi_gesn_event_header *)(gesn_reply); gesn_power_event = (struct scsi_gesn_power_event *)(gesn_reply + 4); /* set event header length and notification */ _lto2b(GESN_HEADER_LEN, gesn_event_header->length); gesn_event_header->notification = GESN_NOTIFY_POWER_MGMT; gesn_event_header->supported_event = GESN_EVENT_POWER_MGMT; /* set event descriptor */ gesn_power_event->event_code = GESN_CODE_NOCHG; if (dev->locked) gesn_power_event->status = GESN_STATUS_ACTIVE; else gesn_power_event->status = GESN_STATUS_IDLE; /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); DPRINTF("%s: writing resp to 0x%llx size %d at local " "idx %d req_idx %d global_idx %d", __func__, acct->resp_desc->addr, acct->resp_desc->len, acct->resp_idx, acct->req_idx, acct->idx); if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to write OK resp status " "data @ 0x%llx", __func__, acct->resp_desc->addr); goto gesn_out; } /* Move index for gesn_reply */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->resp_desc, &(acct->resp_idx)); DPRINTF("%s: writing gesn_reply to 0x%llx size %d at " "local idx %d req_idx %d global_idx %d", __func__, acct->resp_desc->addr, acct->resp_desc->len, acct->resp_idx, acct->req_idx, acct->idx); if (write_mem(acct->resp_desc->addr, gesn_reply, sizeof(gesn_reply))) { log_warnx("%s: unable to write gesn_reply" " response to gpa @ 0x%llx", __func__, acct->resp_desc->addr); } else { ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); } gesn_out: return (ret); } static int vioscsi_handle_get_config(struct vioscsi_dev *dev, struct virtio_scsi_req_hdr *req, struct virtio_vq_acct *acct) { int ret = 0; struct virtio_scsi_res_hdr resp; uint8_t *get_conf_reply; struct scsi_config_feature_header *config_feature_header; struct scsi_config_generic_descriptor *config_generic_desc; struct scsi_config_profile_descriptor *config_profile_desc; struct scsi_config_core_descriptor *config_core_desc; struct scsi_config_morphing_descriptor *config_morphing_desc; struct scsi_config_remove_media_descriptor *config_remove_media_desc; struct scsi_config_random_read_descriptor *config_random_read_desc; #if DEBUG struct scsi_get_configuration *get_configuration = (struct scsi_get_configuration *)(req->cdb); log_debug("%s: Conf RT %x Feature %d Len %d", __func__, get_configuration->byte2, _2btol(get_configuration->feature), _2btol(get_configuration->length)); #endif /* DEBUG */ get_conf_reply = (uint8_t*)calloc(G_CONFIG_REPLY_SIZE, sizeof(uint8_t)); if (get_conf_reply == NULL) goto get_config_out; /* * Use MMC-5 6.6 for structure and * MMC-5 5.2 to send back: * feature header - 8 bytes * feature descriptor for profile list - 8 bytes * feature descriptor for core feature - 12 bytes * feature descriptor for morphing feature - 8 bytes * feature descriptor for removable media - 8 bytes * feature descriptor for random read feature - 12 bytes */ config_feature_header = (struct scsi_config_feature_header *)(get_conf_reply); config_generic_desc = (struct scsi_config_generic_descriptor *)(get_conf_reply + 8); config_profile_desc = (struct scsi_config_profile_descriptor *)(get_conf_reply + 12); config_core_desc = (struct scsi_config_core_descriptor *)(get_conf_reply + 16); config_morphing_desc = (struct scsi_config_morphing_descriptor *)(get_conf_reply + 28); config_remove_media_desc = (struct scsi_config_remove_media_descriptor *)(get_conf_reply + 36); config_random_read_desc = (struct scsi_config_random_read_descriptor *)(get_conf_reply + 44); /* set size to be get_conf_reply - size field */ _lto4b(G_CONFIG_REPLY_SIZE_HEX, config_feature_header->length); /* set current profile to be non-conforming */ _lto2b(CONFIG_PROFILE_NON_CONFORM, config_feature_header->current_profile); /* fill out profile list feature */ _lto2b(CONFIG_FEATURE_CODE_PROFILE, config_generic_desc->feature_code); config_generic_desc->byte3 = CONFIG_PROFILELIST_BYTE3; config_generic_desc->length = CONFIG_PROFILELIST_LENGTH; /* fill out profile descriptor for NON_COFORM */ _lto2b(CONFIG_PROFILE_NON_CONFORM, config_profile_desc->profile_number); config_profile_desc->byte3 = CONFIG_PROFILE_BYTE3; /* fill out core feature */ _lto2b(CONFIG_FEATURE_CODE_CORE, config_core_desc->feature_code); config_core_desc->byte3 = CONFIG_CORE_BYTE3; config_core_desc->length = CONFIG_CORE_LENGTH; _lto4b(CONFIG_CORE_PHY_SCSI, config_core_desc->phy_std); /* fill out morphing feature */ _lto2b(CONFIG_FEATURE_CODE_MORPHING, config_morphing_desc->feature_code); config_morphing_desc->byte3 = CONFIG_MORPHING_BYTE3; config_morphing_desc->length = CONFIG_MORPHING_LENGTH; config_morphing_desc->byte5 = CONFIG_MORPHING_BYTE5; /* fill out removable media feature */ _lto2b(CONFIG_FEATURE_CODE_REMOVE_MEDIA, config_remove_media_desc->feature_code); config_remove_media_desc->byte3 = CONFIG_REMOVE_MEDIA_BYTE3; config_remove_media_desc->length = CONFIG_REMOVE_MEDIA_LENGTH; config_remove_media_desc->byte5 = CONFIG_REMOVE_MEDIA_BYTE5; /* fill out random read feature */ _lto2b(CONFIG_FEATURE_CODE_RANDOM_READ, config_random_read_desc->feature_code); config_random_read_desc->byte3 = CONFIG_RANDOM_READ_BYTE3; config_random_read_desc->length = CONFIG_RANDOM_READ_LENGTH; if (dev->n_blocks >= UINT32_MAX) _lto4b(UINT32_MAX, config_random_read_desc->block_size); else _lto4b(dev->n_blocks - 1, config_random_read_desc->block_size); _lto2b(CONFIG_RANDOM_READ_BLOCKING_TYPE, config_random_read_desc->blocking_type); memset(&resp, 0, sizeof(resp)); vioscsi_prepare_resp(&resp, VIRTIO_SCSI_S_OK, SCSI_OK, 0, 0, 0); /* Move index for response */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->req_desc, &(acct->resp_idx)); DPRINTF("%s: writing resp to 0x%llx size %d at local " "idx %d req_idx %d global_idx %d", __func__, acct->resp_desc->addr, acct->resp_desc->len, acct->resp_idx, acct->req_idx, acct->idx); if (write_mem(acct->resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to set Ok status data @ 0x%llx", __func__, acct->resp_desc->addr); goto free_get_config; } /* Move index for get_conf_reply */ acct->resp_desc = vioscsi_next_ring_desc(acct->desc, acct->resp_desc, &(acct->resp_idx)); DPRINTF("%s: writing get_conf_reply to 0x%llx size %d " "at local idx %d req_idx %d global_idx %d", __func__, acct->resp_desc->addr, acct->resp_desc->len, acct->resp_idx, acct->req_idx, acct->idx); if (write_mem(acct->resp_desc->addr, get_conf_reply, G_CONFIG_REPLY_SIZE)) { log_warnx("%s: unable to write get_conf_reply" " response to gpa @ 0x%llx", __func__, acct->resp_desc->addr); } else { ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes */ vioscsi_next_ring_item(dev, acct->avail, acct->used, acct->req_desc, acct->req_idx); } free_get_config: free(get_conf_reply); get_config_out: return (ret); } int vioscsi_io(int dir, uint16_t reg, uint32_t *data, uint8_t *intr, void *cookie, uint8_t sz) { struct vioscsi_dev *dev = (struct vioscsi_dev *)cookie; *intr = 0xFF; DPRINTF("%s: request %s reg %u, %s sz %u", __func__, dir ? "READ" : "WRITE", reg, vioscsi_reg_name(reg), sz); if (dir == 0) { switch (reg) { case VIRTIO_CONFIG_DEVICE_FEATURES: case VIRTIO_CONFIG_QUEUE_SIZE: case VIRTIO_CONFIG_ISR_STATUS: log_warnx("%s: illegal write %x to %s", __progname, *data, vioscsi_reg_name(reg)); break; case VIRTIO_CONFIG_GUEST_FEATURES: dev->cfg.guest_feature = *data; DPRINTF("%s: guest feature set to %u", __func__, dev->cfg.guest_feature); break; case VIRTIO_CONFIG_QUEUE_PFN: dev->cfg.queue_pfn = *data; vioscsi_update_qa(dev); break; case VIRTIO_CONFIG_QUEUE_SELECT: dev->cfg.queue_select = *data; vioscsi_update_qs(dev); break; case VIRTIO_CONFIG_QUEUE_NOTIFY: dev->cfg.queue_notify = *data; if (vioscsi_notifyq(dev)) *intr = 1; break; case VIRTIO_CONFIG_DEVICE_STATUS: dev->cfg.device_status = *data; DPRINTF("%s: device status set to %u", __func__, dev->cfg.device_status); if (dev->cfg.device_status == 0) { log_debug("%s: device reset", __func__); dev->cfg.guest_feature = 0; dev->cfg.queue_pfn = 0; vioscsi_update_qa(dev); dev->cfg.queue_size = 0; vioscsi_update_qs(dev); dev->cfg.queue_select = 0; dev->cfg.queue_notify = 0; dev->cfg.isr_status = 0; dev->vq[0].last_avail = 0; dev->vq[1].last_avail = 0; dev->vq[2].last_avail = 0; } break; default: break; } } else { switch (reg) { case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI: /* VIRTIO_SCSI_CONFIG_NUM_QUEUES, 32bit */ if (sz == 4) *data = (uint32_t)VIOSCSI_NUM_QUEUES; else if (sz == 1) { /* read first byte of num_queues */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_NUM_QUEUES) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 1: if (sz == 1) { /* read second byte of num_queues */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_NUM_QUEUES >> 8) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 2: if (sz == 1) { /* read third byte of num_queues */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_NUM_QUEUES >> 16) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 3: if (sz == 1) { /* read fourth byte of num_queues */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_NUM_QUEUES >> 24) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 4: /* VIRTIO_SCSI_CONFIG_SEG_MAX, 32bit */ if (sz == 4) *data = (uint32_t)(VIOSCSI_SEG_MAX); else if (sz == 1) { /* read first byte of seg_max */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_SEG_MAX) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 5: if (sz == 1) { /* read second byte of seg_max */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_SEG_MAX >> 8) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 6: if (sz == 1) { /* read third byte of seg_max */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_SEG_MAX >> 16) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 7: if (sz == 1) { /* read fourth byte of seg_max */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_SEG_MAX >> 24) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 8: /* VIRTIO_SCSI_CONFIG_MAX_SECTORS, 32bit */ if (sz == 4) *data = (uint32_t)(dev->max_xfer); else if (sz == 1) { /* read first byte of max_xfer */ *data &= 0xFFFFFF00; *data |= (uint32_t)(dev->max_xfer) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 9: if (sz == 1) { /* read second byte of max_xfer */ *data &= 0xFFFFFF00; *data |= (uint32_t)(dev->max_xfer >> 8) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 10: if (sz == 1) { /* read third byte of max_xfer */ *data &= 0xFFFFFF00; *data |= (uint32_t)(dev->max_xfer >> 16) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 11: if (sz == 1) { /* read fourth byte of max_xfer */ *data &= 0xFFFFFF00; *data |= (uint32_t)(dev->max_xfer >> 24) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 12: /* VIRTIO_SCSI_CONFIG_CMD_PER_LUN, 32bit */ if (sz == 4) *data = (uint32_t)(VIOSCSI_CMD_PER_LUN); else if (sz == 1) { /* read first byte of cmd_per_lun */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_CMD_PER_LUN) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 13: if (sz == 1) { /* read second byte of cmd_per_lun */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_CMD_PER_LUN >> 8) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 14: if (sz == 1) { /* read third byte of cmd_per_lun */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_CMD_PER_LUN >> 16) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 15: if (sz == 1) { /* read fourth byte of cmd_per_lun */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_CMD_PER_LUN >> 24) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 16: /* VIRTIO_SCSI_CONFIG_EVENT_INFO_SIZE, 32bit */ *data = 0x00; break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 20: /* VIRTIO_SCSI_CONFIG_SENSE_SIZE, 32bit */ if (sz == 4) *data = (uint32_t)(VIOSCSI_SENSE_LEN); else if (sz == 1) { /* read first byte of sense_size */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_SENSE_LEN) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 21: if (sz == 1) { /* read second byte of sense_size */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_SENSE_LEN >> 8) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 22: if (sz == 1) { /* read third byte of sense_size */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_SENSE_LEN >> 16) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 23: if (sz == 1) { /* read fourth byte of sense_size */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_SENSE_LEN >> 24) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 24: /* VIRTIO_SCSI_CONFIG_CDB_SIZE, 32bit */ if (sz == 4) *data = (uint32_t)(VIOSCSI_CDB_LEN); else if (sz == 1) { /* read first byte of cdb_len */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_CDB_LEN) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 25: if (sz == 1) { /* read second byte of cdb_len */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_CDB_LEN >> 8) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 26: if (sz == 1) { /* read third byte of cdb_len */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_CDB_LEN >> 16) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 27: if (sz == 1) { /* read fourth byte of cdb_len */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_CDB_LEN >> 24) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 28: /* VIRTIO_SCSI_CONFIG_MAX_CHANNEL, 16bit */ /* defined by standard to be zero */ *data &= 0xFFFF0000; break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 29: /* defined by standard to be zero */ *data &= 0xFFFF0000; break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 30: /* VIRTIO_SCSI_CONFIG_MAX_TARGET, 16bit */ if (sz == 2) { *data &= 0xFFFF0000; *data |= (uint32_t)(VIOSCSI_MAX_TARGET) & 0xFFFF; } else if (sz == 1) { /* read first byte of max_target */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_MAX_TARGET) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 31: if (sz == 1) { /* read second byte of max_target */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_MAX_TARGET >> 8) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 32: /* VIRTIO_SCSI_CONFIG_MAX_LUN, 32bit */ if (sz == 4) *data = (uint32_t)(VIOSCSI_MAX_LUN); else if (sz == 1) { /* read first byte of max_lun */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_MAX_LUN) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 33: if (sz == 1) { /* read second byte of max_lun */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_MAX_LUN >> 8) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 34: if (sz == 1) { /* read third byte of max_lun */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_MAX_LUN >> 16) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI + 35: if (sz == 1) { /* read fourth byte of max_lun */ *data &= 0xFFFFFF00; *data |= (uint32_t)(VIOSCSI_MAX_LUN >> 24) & 0xFF; } break; case VIRTIO_CONFIG_DEVICE_FEATURES: *data = dev->cfg.device_feature; break; case VIRTIO_CONFIG_GUEST_FEATURES: *data = dev->cfg.guest_feature; break; case VIRTIO_CONFIG_QUEUE_PFN: *data = dev->cfg.queue_pfn; break; case VIRTIO_CONFIG_QUEUE_SIZE: if (sz == 4) *data = dev->cfg.queue_size; else if (sz == 2) { *data &= 0xFFFF0000; *data |= (uint16_t)dev->cfg.queue_size; } else if (sz == 1) { *data &= 0xFFFFFF00; *data |= (uint8_t)dev->cfg.queue_size; } break; case VIRTIO_CONFIG_QUEUE_SELECT: *data = dev->cfg.queue_select; break; case VIRTIO_CONFIG_QUEUE_NOTIFY: *data = dev->cfg.queue_notify; break; case VIRTIO_CONFIG_DEVICE_STATUS: if (sz == 4) *data = dev->cfg.device_status; else if (sz == 2) { *data &= 0xFFFF0000; *data |= (uint16_t)dev->cfg.device_status; } else if (sz == 1) { *data &= 0xFFFFFF00; *data |= (uint8_t)dev->cfg.device_status; } break; case VIRTIO_CONFIG_ISR_STATUS: *data = dev->cfg.isr_status; dev->cfg.isr_status = 0; break; } } return (0); } void vioscsi_update_qs(struct vioscsi_dev *dev) { struct virtio_vq_info *vq_info; /* Invalid queue? */ if (dev->cfg.queue_select >= VIRTIO_MAX_QUEUES) { dev->cfg.queue_size = 0; return; } vq_info = &dev->vq[dev->cfg.queue_select]; /* Update queue pfn/size based on queue select */ dev->cfg.queue_pfn = vq_info->q_gpa >> 12; dev->cfg.queue_size = vq_info->qs; } void vioscsi_update_qa(struct vioscsi_dev *dev) { struct virtio_vq_info *vq_info; void *hva = NULL; /* Invalid queue? */ if (dev->cfg.queue_select >= VIRTIO_MAX_QUEUES) return; vq_info = &dev->vq[dev->cfg.queue_select]; vq_info->q_gpa = (uint64_t)dev->cfg.queue_pfn * VIRTIO_PAGE_SIZE; hva = hvaddr_mem(vq_info->q_gpa, vring_size(VIOSCSI_QUEUE_SIZE)); if (hva == NULL) fatal("vioscsi_update_qa"); vq_info->q_hva = hva; } /* * Process message(s) in the queue(s) * vioscsi driver will be placing the following in the queue for each iteration * virtio_scsi_req_hdr with a possible SCSI_DATA_OUT buffer * along with a virtio_scsi_res_hdr with a possible SCSI_DATA_IN buffer * for consumption. * * Return 1 if an interrupt should be generated (response written) * 0 otherwise */ int vioscsi_notifyq(struct vioscsi_dev *dev) { int cnt, ret = 0; char *vr; struct virtio_scsi_req_hdr req; struct virtio_scsi_res_hdr resp; struct virtio_vq_acct acct; struct virtio_vq_info *vq_info; ret = 0; /* Invalid queue? */ if (dev->cfg.queue_notify >= VIRTIO_MAX_QUEUES) return (ret); vq_info = &dev->vq[dev->cfg.queue_notify]; vr = vq_info->q_hva; if (vr == NULL) fatalx("%s: null vring", __func__); /* Compute offsets in ring of descriptors, avail ring, and used ring */ acct.desc = (struct vring_desc *)(vr); acct.avail = (struct vring_avail *)(vr + vq_info->vq_availoffset); acct.used = (struct vring_used *)(vr + vq_info->vq_usedoffset); acct.idx = vq_info->last_avail & VIOSCSI_QUEUE_MASK; if ((acct.avail->idx & VIOSCSI_QUEUE_MASK) == acct.idx) { log_debug("%s - nothing to do?", __func__); return (0); } cnt = 0; while (acct.idx != (acct.avail->idx & VIOSCSI_QUEUE_MASK)) { /* Guard against infinite descriptor chains */ if (++cnt >= VIOSCSI_QUEUE_SIZE) { log_warnx("%s: invalid descriptor table", __func__); goto out; } acct.req_idx = acct.avail->ring[acct.idx] & VIOSCSI_QUEUE_MASK; acct.req_desc = &(acct.desc[acct.req_idx]); /* Clear resp for next message */ memset(&resp, 0, sizeof(resp)); if ((acct.req_desc->flags & VRING_DESC_F_NEXT) == 0) { log_warnx("%s: unchained req descriptor received " "(idx %d)", __func__, acct.req_idx); goto out; } /* Read command from descriptor ring */ if (read_mem(acct.req_desc->addr, &req, sizeof(req))) { log_warnx("%s: command read_mem error @ 0x%llx", __func__, acct.req_desc->addr); goto out; } /* * req.lun is defined by virtio as * lun[0] - Always set to 1 * lun[1] - Target, negotiated as VIOSCSI_MAX_TARGET * lun[2-3] - represent single level LUN structure * lun[4-7] - Zero * At this current time, we are only servicing one device per * bus (1:0:X:0). * * Various implementations will attempt to scan all possible * targets (256) looking for devices or scan for all possible * LUNs in a single level. When Target is greater than * VIOSCSI_MAX_TARGET or when lun[3] is greater than zero, * respond with a BAD_TARGET response. */ if (req.lun[1] >= VIOSCSI_MAX_TARGET || req.lun[3] > 0) { DPRINTF("%s: Ignore CMD 0x%02x,%s on lun %u:%u:%u:%u", __func__, req.cdb[0], vioscsi_op_names(req.cdb[0]), req.lun[0], req.lun[1], req.lun[2], req.lun[3]); /* Move index for response */ acct.resp_desc = vioscsi_next_ring_desc(acct.desc, acct.req_desc, &(acct.resp_idx)); vioscsi_prepare_resp(&resp, VIRTIO_SCSI_S_BAD_TARGET, SCSI_OK, 0, 0, 0); if (acct.resp_desc->len > sizeof(resp)) { log_warnx("%s: invalid descriptor length", __func__); goto out; } if (write_mem(acct.resp_desc->addr, &resp, sizeof(resp))) { log_warnx("%s: unable to write BAD_TARGET" " resp status data @ 0x%llx", __func__, acct.resp_desc->addr); goto out; } ret = 1; dev->cfg.isr_status = 1; /* Move ring indexes (updates the used ring index) */ vioscsi_next_ring_item(dev, acct.avail, acct.used, acct.req_desc, acct.req_idx); goto next_msg; } DPRINTF("%s: Queue %d id 0x%llx lun %u:%u:%u:%u" " cdb OP 0x%02x,%s", __func__, dev->cfg.queue_notify, req.id, req.lun[0], req.lun[1], req.lun[2], req.lun[3], req.cdb[0], vioscsi_op_names(req.cdb[0])); /* opcode is first byte */ switch (req.cdb[0]) { case TEST_UNIT_READY: case START_STOP: ret = vioscsi_handle_tur(dev, &req, &acct); break; case PREVENT_ALLOW: ret = vioscsi_handle_prevent_allow(dev, &req, &acct); break; case READ_TOC: ret = vioscsi_handle_read_toc(dev, &req, &acct); break; case READ_CAPACITY: ret = vioscsi_handle_read_capacity(dev, &req, &acct); break; case READ_CAPACITY_16: ret = vioscsi_handle_read_capacity_16(dev, &req, &acct); break; case READ_COMMAND: ret = vioscsi_handle_read_6(dev, &req, &acct); break; case READ_10: ret = vioscsi_handle_read_10(dev, &req, &acct); break; case INQUIRY: ret = vioscsi_handle_inquiry(dev, &req, &acct); break; case MODE_SENSE: ret = vioscsi_handle_mode_sense(dev, &req, &acct); break; case MODE_SENSE_BIG: ret = vioscsi_handle_mode_sense_big(dev, &req, &acct); break; case GET_EVENT_STATUS_NOTIFICATION: ret = vioscsi_handle_gesn(dev, &req, &acct); break; case READ_DISC_INFORMATION: ret = vioscsi_handle_read_disc_info(dev, &req, &acct); break; case GET_CONFIGURATION: ret = vioscsi_handle_get_config(dev, &req, &acct); break; case MECHANISM_STATUS: ret = vioscsi_handle_mechanism_status(dev, &req, &acct); break; case REPORT_LUNS: ret = vioscsi_handle_report_luns(dev, &req, &acct); break; default: log_warnx("%s: unsupported opcode 0x%02x,%s", __func__, req.cdb[0], vioscsi_op_names(req.cdb[0])); /* Move ring indexes */ vioscsi_next_ring_item(dev, acct.avail, acct.used, acct.req_desc, acct.req_idx); break; } next_msg: /* Increment to the next queue slot */ acct.idx = (acct.idx + 1) & VIOSCSI_QUEUE_MASK; } out: return (ret); }