| /* |
| * UAS (USB Attached SCSI) emulation |
| * |
| * Copyright Red Hat, Inc. 2012 |
| * |
| * Author: Gerd Hoffmann <kraxel@redhat.com> |
| * |
| * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| * See the COPYING file in the top-level directory. |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qemu/option.h" |
| #include "qemu/config-file.h" |
| #include "trace.h" |
| #include "qemu/error-report.h" |
| #include "qemu/main-loop.h" |
| #include "qemu/module.h" |
| |
| #include "hw/usb.h" |
| #include "migration/vmstate.h" |
| #include "desc.h" |
| #include "hw/qdev-properties.h" |
| #include "hw/scsi/scsi.h" |
| #include "scsi/constants.h" |
| |
| /* --------------------------------------------------------------------- */ |
| |
| #define UAS_UI_COMMAND 0x01 |
| #define UAS_UI_SENSE 0x03 |
| #define UAS_UI_RESPONSE 0x04 |
| #define UAS_UI_TASK_MGMT 0x05 |
| #define UAS_UI_READ_READY 0x06 |
| #define UAS_UI_WRITE_READY 0x07 |
| |
| #define UAS_RC_TMF_COMPLETE 0x00 |
| #define UAS_RC_INVALID_INFO_UNIT 0x02 |
| #define UAS_RC_TMF_NOT_SUPPORTED 0x04 |
| #define UAS_RC_TMF_FAILED 0x05 |
| #define UAS_RC_TMF_SUCCEEDED 0x08 |
| #define UAS_RC_INCORRECT_LUN 0x09 |
| #define UAS_RC_OVERLAPPED_TAG 0x0a |
| |
| #define UAS_TMF_ABORT_TASK 0x01 |
| #define UAS_TMF_ABORT_TASK_SET 0x02 |
| #define UAS_TMF_CLEAR_TASK_SET 0x04 |
| #define UAS_TMF_LOGICAL_UNIT_RESET 0x08 |
| #define UAS_TMF_I_T_NEXUS_RESET 0x10 |
| #define UAS_TMF_CLEAR_ACA 0x40 |
| #define UAS_TMF_QUERY_TASK 0x80 |
| #define UAS_TMF_QUERY_TASK_SET 0x81 |
| #define UAS_TMF_QUERY_ASYNC_EVENT 0x82 |
| |
| #define UAS_PIPE_ID_COMMAND 0x01 |
| #define UAS_PIPE_ID_STATUS 0x02 |
| #define UAS_PIPE_ID_DATA_IN 0x03 |
| #define UAS_PIPE_ID_DATA_OUT 0x04 |
| |
| typedef struct { |
| uint8_t id; |
| uint8_t reserved; |
| uint16_t tag; |
| } QEMU_PACKED uas_iu_header; |
| |
| typedef struct { |
| uint8_t prio_taskattr; /* 6:3 priority, 2:0 task attribute */ |
| uint8_t reserved_1; |
| uint8_t add_cdb_length; /* 7:2 additional adb length (dwords) */ |
| uint8_t reserved_2; |
| uint64_t lun; |
| uint8_t cdb[16]; |
| uint8_t add_cdb[]; |
| } QEMU_PACKED uas_iu_command; |
| |
| typedef struct { |
| uint16_t status_qualifier; |
| uint8_t status; |
| uint8_t reserved[7]; |
| uint16_t sense_length; |
| uint8_t sense_data[18]; |
| } QEMU_PACKED uas_iu_sense; |
| |
| typedef struct { |
| uint8_t add_response_info[3]; |
| uint8_t response_code; |
| } QEMU_PACKED uas_iu_response; |
| |
| typedef struct { |
| uint8_t function; |
| uint8_t reserved; |
| uint16_t task_tag; |
| uint64_t lun; |
| } QEMU_PACKED uas_iu_task_mgmt; |
| |
| typedef struct { |
| uas_iu_header hdr; |
| union { |
| uas_iu_command command; |
| uas_iu_sense sense; |
| uas_iu_task_mgmt task; |
| uas_iu_response response; |
| }; |
| } QEMU_PACKED uas_iu; |
| |
| /* --------------------------------------------------------------------- */ |
| |
| #define UAS_STREAM_BM_ATTR 4 |
| #define UAS_MAX_STREAMS (1 << UAS_STREAM_BM_ATTR) |
| |
| typedef struct UASDevice UASDevice; |
| typedef struct UASRequest UASRequest; |
| typedef struct UASStatus UASStatus; |
| |
| struct UASDevice { |
| USBDevice dev; |
| SCSIBus bus; |
| QEMUBH *status_bh; |
| QTAILQ_HEAD(, UASStatus) results; |
| QTAILQ_HEAD(, UASRequest) requests; |
| |
| /* properties */ |
| uint32_t requestlog; |
| |
| /* usb 2.0 only */ |
| USBPacket *status2; |
| UASRequest *datain2; |
| UASRequest *dataout2; |
| |
| /* usb 3.0 only */ |
| USBPacket *data3[UAS_MAX_STREAMS + 1]; |
| USBPacket *status3[UAS_MAX_STREAMS + 1]; |
| }; |
| |
| #define TYPE_USB_UAS "usb-uas" |
| #define USB_UAS(obj) OBJECT_CHECK(UASDevice, (obj), TYPE_USB_UAS) |
| |
| struct UASRequest { |
| uint16_t tag; |
| uint64_t lun; |
| UASDevice *uas; |
| SCSIDevice *dev; |
| SCSIRequest *req; |
| USBPacket *data; |
| bool data_async; |
| bool active; |
| bool complete; |
| uint32_t buf_off; |
| uint32_t buf_size; |
| uint32_t data_off; |
| uint32_t data_size; |
| QTAILQ_ENTRY(UASRequest) next; |
| }; |
| |
| struct UASStatus { |
| uint32_t stream; |
| uas_iu status; |
| uint32_t length; |
| QTAILQ_ENTRY(UASStatus) next; |
| }; |
| |
| /* --------------------------------------------------------------------- */ |
| |
| enum { |
| STR_MANUFACTURER = 1, |
| STR_PRODUCT, |
| STR_SERIALNUMBER, |
| STR_CONFIG_HIGH, |
| STR_CONFIG_SUPER, |
| }; |
| |
| static const USBDescStrings desc_strings = { |
| [STR_MANUFACTURER] = "QEMU", |
| [STR_PRODUCT] = "USB Attached SCSI HBA", |
| [STR_SERIALNUMBER] = "27842", |
| [STR_CONFIG_HIGH] = "High speed config (usb 2.0)", |
| [STR_CONFIG_SUPER] = "Super speed config (usb 3.0)", |
| }; |
| |
| static const USBDescIface desc_iface_high = { |
| .bInterfaceNumber = 0, |
| .bNumEndpoints = 4, |
| .bInterfaceClass = USB_CLASS_MASS_STORAGE, |
| .bInterfaceSubClass = 0x06, /* SCSI */ |
| .bInterfaceProtocol = 0x62, /* UAS */ |
| .eps = (USBDescEndpoint[]) { |
| { |
| .bEndpointAddress = USB_DIR_OUT | UAS_PIPE_ID_COMMAND, |
| .bmAttributes = USB_ENDPOINT_XFER_BULK, |
| .wMaxPacketSize = 512, |
| .extra = (uint8_t[]) { |
| 0x04, /* u8 bLength */ |
| 0x24, /* u8 bDescriptorType */ |
| UAS_PIPE_ID_COMMAND, |
| 0x00, /* u8 bReserved */ |
| }, |
| },{ |
| .bEndpointAddress = USB_DIR_IN | UAS_PIPE_ID_STATUS, |
| .bmAttributes = USB_ENDPOINT_XFER_BULK, |
| .wMaxPacketSize = 512, |
| .extra = (uint8_t[]) { |
| 0x04, /* u8 bLength */ |
| 0x24, /* u8 bDescriptorType */ |
| UAS_PIPE_ID_STATUS, |
| 0x00, /* u8 bReserved */ |
| }, |
| },{ |
| .bEndpointAddress = USB_DIR_IN | UAS_PIPE_ID_DATA_IN, |
| .bmAttributes = USB_ENDPOINT_XFER_BULK, |
| .wMaxPacketSize = 512, |
| .extra = (uint8_t[]) { |
| 0x04, /* u8 bLength */ |
| 0x24, /* u8 bDescriptorType */ |
| UAS_PIPE_ID_DATA_IN, |
| 0x00, /* u8 bReserved */ |
| }, |
| },{ |
| .bEndpointAddress = USB_DIR_OUT | UAS_PIPE_ID_DATA_OUT, |
| .bmAttributes = USB_ENDPOINT_XFER_BULK, |
| .wMaxPacketSize = 512, |
| .extra = (uint8_t[]) { |
| 0x04, /* u8 bLength */ |
| 0x24, /* u8 bDescriptorType */ |
| UAS_PIPE_ID_DATA_OUT, |
| 0x00, /* u8 bReserved */ |
| }, |
| }, |
| } |
| }; |
| |
| static const USBDescIface desc_iface_super = { |
| .bInterfaceNumber = 0, |
| .bNumEndpoints = 4, |
| .bInterfaceClass = USB_CLASS_MASS_STORAGE, |
| .bInterfaceSubClass = 0x06, /* SCSI */ |
| .bInterfaceProtocol = 0x62, /* UAS */ |
| .eps = (USBDescEndpoint[]) { |
| { |
| .bEndpointAddress = USB_DIR_OUT | UAS_PIPE_ID_COMMAND, |
| .bmAttributes = USB_ENDPOINT_XFER_BULK, |
| .wMaxPacketSize = 1024, |
| .bMaxBurst = 15, |
| .extra = (uint8_t[]) { |
| 0x04, /* u8 bLength */ |
| 0x24, /* u8 bDescriptorType */ |
| UAS_PIPE_ID_COMMAND, |
| 0x00, /* u8 bReserved */ |
| }, |
| },{ |
| .bEndpointAddress = USB_DIR_IN | UAS_PIPE_ID_STATUS, |
| .bmAttributes = USB_ENDPOINT_XFER_BULK, |
| .wMaxPacketSize = 1024, |
| .bMaxBurst = 15, |
| .bmAttributes_super = UAS_STREAM_BM_ATTR, |
| .extra = (uint8_t[]) { |
| 0x04, /* u8 bLength */ |
| 0x24, /* u8 bDescriptorType */ |
| UAS_PIPE_ID_STATUS, |
| 0x00, /* u8 bReserved */ |
| }, |
| },{ |
| .bEndpointAddress = USB_DIR_IN | UAS_PIPE_ID_DATA_IN, |
| .bmAttributes = USB_ENDPOINT_XFER_BULK, |
| .wMaxPacketSize = 1024, |
| .bMaxBurst = 15, |
| .bmAttributes_super = UAS_STREAM_BM_ATTR, |
| .extra = (uint8_t[]) { |
| 0x04, /* u8 bLength */ |
| 0x24, /* u8 bDescriptorType */ |
| UAS_PIPE_ID_DATA_IN, |
| 0x00, /* u8 bReserved */ |
| }, |
| },{ |
| .bEndpointAddress = USB_DIR_OUT | UAS_PIPE_ID_DATA_OUT, |
| .bmAttributes = USB_ENDPOINT_XFER_BULK, |
| .wMaxPacketSize = 1024, |
| .bMaxBurst = 15, |
| .bmAttributes_super = UAS_STREAM_BM_ATTR, |
| .extra = (uint8_t[]) { |
| 0x04, /* u8 bLength */ |
| 0x24, /* u8 bDescriptorType */ |
| UAS_PIPE_ID_DATA_OUT, |
| 0x00, /* u8 bReserved */ |
| }, |
| }, |
| } |
| }; |
| |
| static const USBDescDevice desc_device_high = { |
| .bcdUSB = 0x0200, |
| .bMaxPacketSize0 = 64, |
| .bNumConfigurations = 1, |
| .confs = (USBDescConfig[]) { |
| { |
| .bNumInterfaces = 1, |
| .bConfigurationValue = 1, |
| .iConfiguration = STR_CONFIG_HIGH, |
| .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER, |
| .nif = 1, |
| .ifs = &desc_iface_high, |
| }, |
| }, |
| }; |
| |
| static const USBDescDevice desc_device_super = { |
| .bcdUSB = 0x0300, |
| .bMaxPacketSize0 = 9, |
| .bNumConfigurations = 1, |
| .confs = (USBDescConfig[]) { |
| { |
| .bNumInterfaces = 1, |
| .bConfigurationValue = 1, |
| .iConfiguration = STR_CONFIG_SUPER, |
| .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER, |
| .nif = 1, |
| .ifs = &desc_iface_super, |
| }, |
| }, |
| }; |
| |
| static const USBDesc desc = { |
| .id = { |
| .idVendor = 0x46f4, /* CRC16() of "QEMU" */ |
| .idProduct = 0x0003, |
| .bcdDevice = 0, |
| .iManufacturer = STR_MANUFACTURER, |
| .iProduct = STR_PRODUCT, |
| .iSerialNumber = STR_SERIALNUMBER, |
| }, |
| .high = &desc_device_high, |
| .super = &desc_device_super, |
| .str = desc_strings, |
| }; |
| |
| /* --------------------------------------------------------------------- */ |
| |
| static bool uas_using_streams(UASDevice *uas) |
| { |
| return uas->dev.speed == USB_SPEED_SUPER; |
| } |
| |
| /* --------------------------------------------------------------------- */ |
| |
| static UASStatus *usb_uas_alloc_status(UASDevice *uas, uint8_t id, uint16_t tag) |
| { |
| UASStatus *st = g_new0(UASStatus, 1); |
| |
| st->status.hdr.id = id; |
| st->status.hdr.tag = cpu_to_be16(tag); |
| st->length = sizeof(uas_iu_header); |
| if (uas_using_streams(uas)) { |
| st->stream = tag; |
| } |
| return st; |
| } |
| |
| static void usb_uas_send_status_bh(void *opaque) |
| { |
| UASDevice *uas = opaque; |
| UASStatus *st; |
| USBPacket *p; |
| |
| while ((st = QTAILQ_FIRST(&uas->results)) != NULL) { |
| if (uas_using_streams(uas)) { |
| p = uas->status3[st->stream]; |
| uas->status3[st->stream] = NULL; |
| } else { |
| p = uas->status2; |
| uas->status2 = NULL; |
| } |
| if (p == NULL) { |
| break; |
| } |
| |
| usb_packet_copy(p, &st->status, st->length); |
| QTAILQ_REMOVE(&uas->results, st, next); |
| g_free(st); |
| |
| p->status = USB_RET_SUCCESS; /* Clear previous ASYNC status */ |
| usb_packet_complete(&uas->dev, p); |
| } |
| } |
| |
| static void usb_uas_queue_status(UASDevice *uas, UASStatus *st, int length) |
| { |
| USBPacket *p = uas_using_streams(uas) ? |
| uas->status3[st->stream] : uas->status2; |
| |
| st->length += length; |
| QTAILQ_INSERT_TAIL(&uas->results, st, next); |
| if (p) { |
| /* |
| * Just schedule bh make sure any in-flight data transaction |
| * is finished before completing (sending) the status packet. |
| */ |
| qemu_bh_schedule(uas->status_bh); |
| } else { |
| USBEndpoint *ep = usb_ep_get(&uas->dev, USB_TOKEN_IN, |
| UAS_PIPE_ID_STATUS); |
| usb_wakeup(ep, st->stream); |
| } |
| } |
| |
| static void usb_uas_queue_response(UASDevice *uas, uint16_t tag, uint8_t code) |
| { |
| UASStatus *st = usb_uas_alloc_status(uas, UAS_UI_RESPONSE, tag); |
| |
| trace_usb_uas_response(uas->dev.addr, tag, code); |
| st->status.response.response_code = code; |
| usb_uas_queue_status(uas, st, sizeof(uas_iu_response)); |
| } |
| |
| static void usb_uas_queue_sense(UASRequest *req, uint8_t status) |
| { |
| UASStatus *st = usb_uas_alloc_status(req->uas, UAS_UI_SENSE, req->tag); |
| int len, slen = 0; |
| |
| trace_usb_uas_sense(req->uas->dev.addr, req->tag, status); |
| st->status.sense.status = status; |
| st->status.sense.status_qualifier = cpu_to_be16(0); |
| if (status != GOOD) { |
| slen = scsi_req_get_sense(req->req, st->status.sense.sense_data, |
| sizeof(st->status.sense.sense_data)); |
| st->status.sense.sense_length = cpu_to_be16(slen); |
| } |
| len = sizeof(uas_iu_sense) - sizeof(st->status.sense.sense_data) + slen; |
| usb_uas_queue_status(req->uas, st, len); |
| } |
| |
| static void usb_uas_queue_fake_sense(UASDevice *uas, uint16_t tag, |
| struct SCSISense sense) |
| { |
| UASStatus *st = usb_uas_alloc_status(uas, UAS_UI_SENSE, tag); |
| int len, slen = 0; |
| |
| st->status.sense.status = CHECK_CONDITION; |
| st->status.sense.status_qualifier = cpu_to_be16(0); |
| st->status.sense.sense_data[0] = 0x70; |
| st->status.sense.sense_data[2] = sense.key; |
| st->status.sense.sense_data[7] = 10; |
| st->status.sense.sense_data[12] = sense.asc; |
| st->status.sense.sense_data[13] = sense.ascq; |
| slen = 18; |
| len = sizeof(uas_iu_sense) - sizeof(st->status.sense.sense_data) + slen; |
| usb_uas_queue_status(uas, st, len); |
| } |
| |
| static void usb_uas_queue_read_ready(UASRequest *req) |
| { |
| UASStatus *st = usb_uas_alloc_status(req->uas, UAS_UI_READ_READY, |
| req->tag); |
| |
| trace_usb_uas_read_ready(req->uas->dev.addr, req->tag); |
| usb_uas_queue_status(req->uas, st, 0); |
| } |
| |
| static void usb_uas_queue_write_ready(UASRequest *req) |
| { |
| UASStatus *st = usb_uas_alloc_status(req->uas, UAS_UI_WRITE_READY, |
| req->tag); |
| |
| trace_usb_uas_write_ready(req->uas->dev.addr, req->tag); |
| usb_uas_queue_status(req->uas, st, 0); |
| } |
| |
| /* --------------------------------------------------------------------- */ |
| |
| static int usb_uas_get_lun(uint64_t lun64) |
| { |
| return (lun64 >> 48) & 0xff; |
| } |
| |
| static SCSIDevice *usb_uas_get_dev(UASDevice *uas, uint64_t lun64) |
| { |
| if ((lun64 >> 56) != 0x00) { |
| return NULL; |
| } |
| return scsi_device_find(&uas->bus, 0, 0, usb_uas_get_lun(lun64)); |
| } |
| |
| static void usb_uas_complete_data_packet(UASRequest *req) |
| { |
| USBPacket *p; |
| |
| if (!req->data_async) { |
| return; |
| } |
| p = req->data; |
| req->data = NULL; |
| req->data_async = false; |
| p->status = USB_RET_SUCCESS; /* Clear previous ASYNC status */ |
| usb_packet_complete(&req->uas->dev, p); |
| } |
| |
| static void usb_uas_copy_data(UASRequest *req) |
| { |
| uint32_t length; |
| |
| length = MIN(req->buf_size - req->buf_off, |
| req->data->iov.size - req->data->actual_length); |
| trace_usb_uas_xfer_data(req->uas->dev.addr, req->tag, length, |
| req->data->actual_length, req->data->iov.size, |
| req->buf_off, req->buf_size); |
| usb_packet_copy(req->data, scsi_req_get_buf(req->req) + req->buf_off, |
| length); |
| req->buf_off += length; |
| req->data_off += length; |
| |
| if (req->data->actual_length == req->data->iov.size) { |
| usb_uas_complete_data_packet(req); |
| } |
| if (req->buf_size && req->buf_off == req->buf_size) { |
| req->buf_off = 0; |
| req->buf_size = 0; |
| scsi_req_continue(req->req); |
| } |
| } |
| |
| static void usb_uas_start_next_transfer(UASDevice *uas) |
| { |
| UASRequest *req; |
| |
| if (uas_using_streams(uas)) { |
| return; |
| } |
| |
| QTAILQ_FOREACH(req, &uas->requests, next) { |
| if (req->active || req->complete) { |
| continue; |
| } |
| if (req->req->cmd.mode == SCSI_XFER_FROM_DEV && uas->datain2 == NULL) { |
| uas->datain2 = req; |
| usb_uas_queue_read_ready(req); |
| req->active = true; |
| return; |
| } |
| if (req->req->cmd.mode == SCSI_XFER_TO_DEV && uas->dataout2 == NULL) { |
| uas->dataout2 = req; |
| usb_uas_queue_write_ready(req); |
| req->active = true; |
| return; |
| } |
| } |
| } |
| |
| static UASRequest *usb_uas_alloc_request(UASDevice *uas, uas_iu *iu) |
| { |
| UASRequest *req; |
| |
| req = g_new0(UASRequest, 1); |
| req->uas = uas; |
| req->tag = be16_to_cpu(iu->hdr.tag); |
| req->lun = be64_to_cpu(iu->command.lun); |
| req->dev = usb_uas_get_dev(req->uas, req->lun); |
| return req; |
| } |
| |
| static void usb_uas_scsi_free_request(SCSIBus *bus, void *priv) |
| { |
| UASRequest *req = priv; |
| UASDevice *uas = req->uas; |
| |
| if (req == uas->datain2) { |
| uas->datain2 = NULL; |
| } |
| if (req == uas->dataout2) { |
| uas->dataout2 = NULL; |
| } |
| QTAILQ_REMOVE(&uas->requests, req, next); |
| g_free(req); |
| usb_uas_start_next_transfer(uas); |
| } |
| |
| static UASRequest *usb_uas_find_request(UASDevice *uas, uint16_t tag) |
| { |
| UASRequest *req; |
| |
| QTAILQ_FOREACH(req, &uas->requests, next) { |
| if (req->tag == tag) { |
| return req; |
| } |
| } |
| return NULL; |
| } |
| |
| static void usb_uas_scsi_transfer_data(SCSIRequest *r, uint32_t len) |
| { |
| UASRequest *req = r->hba_private; |
| |
| trace_usb_uas_scsi_data(req->uas->dev.addr, req->tag, len); |
| req->buf_off = 0; |
| req->buf_size = len; |
| if (req->data) { |
| usb_uas_copy_data(req); |
| } else { |
| usb_uas_start_next_transfer(req->uas); |
| } |
| } |
| |
| static void usb_uas_scsi_command_complete(SCSIRequest *r, |
| uint32_t status, size_t resid) |
| { |
| UASRequest *req = r->hba_private; |
| |
| trace_usb_uas_scsi_complete(req->uas->dev.addr, req->tag, status, resid); |
| req->complete = true; |
| if (req->data) { |
| usb_uas_complete_data_packet(req); |
| } |
| usb_uas_queue_sense(req, status); |
| scsi_req_unref(req->req); |
| } |
| |
| static void usb_uas_scsi_request_cancelled(SCSIRequest *r) |
| { |
| UASRequest *req = r->hba_private; |
| |
| /* FIXME: queue notification to status pipe? */ |
| scsi_req_unref(req->req); |
| } |
| |
| static const struct SCSIBusInfo usb_uas_scsi_info = { |
| .tcq = true, |
| .max_target = 0, |
| .max_lun = 255, |
| |
| .transfer_data = usb_uas_scsi_transfer_data, |
| .complete = usb_uas_scsi_command_complete, |
| .cancel = usb_uas_scsi_request_cancelled, |
| .free_request = usb_uas_scsi_free_request, |
| }; |
| |
| /* --------------------------------------------------------------------- */ |
| |
| static void usb_uas_handle_reset(USBDevice *dev) |
| { |
| UASDevice *uas = USB_UAS(dev); |
| UASRequest *req, *nreq; |
| UASStatus *st, *nst; |
| |
| trace_usb_uas_reset(dev->addr); |
| QTAILQ_FOREACH_SAFE(req, &uas->requests, next, nreq) { |
| scsi_req_cancel(req->req); |
| } |
| QTAILQ_FOREACH_SAFE(st, &uas->results, next, nst) { |
| QTAILQ_REMOVE(&uas->results, st, next); |
| g_free(st); |
| } |
| } |
| |
| static void usb_uas_handle_control(USBDevice *dev, USBPacket *p, |
| int request, int value, int index, int length, uint8_t *data) |
| { |
| int ret; |
| |
| ret = usb_desc_handle_control(dev, p, request, value, index, length, data); |
| if (ret >= 0) { |
| return; |
| } |
| error_report("%s: unhandled control request (req 0x%x, val 0x%x, idx 0x%x", |
| __func__, request, value, index); |
| p->status = USB_RET_STALL; |
| } |
| |
| static void usb_uas_cancel_io(USBDevice *dev, USBPacket *p) |
| { |
| UASDevice *uas = USB_UAS(dev); |
| UASRequest *req, *nreq; |
| int i; |
| |
| if (uas->status2 == p) { |
| uas->status2 = NULL; |
| qemu_bh_cancel(uas->status_bh); |
| return; |
| } |
| if (uas_using_streams(uas)) { |
| for (i = 0; i <= UAS_MAX_STREAMS; i++) { |
| if (uas->status3[i] == p) { |
| uas->status3[i] = NULL; |
| return; |
| } |
| if (uas->data3[i] == p) { |
| uas->data3[i] = NULL; |
| return; |
| } |
| } |
| } |
| QTAILQ_FOREACH_SAFE(req, &uas->requests, next, nreq) { |
| if (req->data == p) { |
| req->data = NULL; |
| return; |
| } |
| } |
| assert(!"canceled usb packet not found"); |
| } |
| |
| static void usb_uas_command(UASDevice *uas, uas_iu *iu) |
| { |
| UASRequest *req; |
| uint32_t len; |
| uint16_t tag = be16_to_cpu(iu->hdr.tag); |
| |
| if (uas_using_streams(uas) && tag > UAS_MAX_STREAMS) { |
| goto invalid_tag; |
| } |
| req = usb_uas_find_request(uas, tag); |
| if (req) { |
| goto overlapped_tag; |
| } |
| req = usb_uas_alloc_request(uas, iu); |
| if (req->dev == NULL) { |
| goto bad_target; |
| } |
| |
| trace_usb_uas_command(uas->dev.addr, req->tag, |
| usb_uas_get_lun(req->lun), |
| req->lun >> 32, req->lun & 0xffffffff); |
| QTAILQ_INSERT_TAIL(&uas->requests, req, next); |
| if (uas_using_streams(uas) && uas->data3[req->tag] != NULL) { |
| req->data = uas->data3[req->tag]; |
| req->data_async = true; |
| uas->data3[req->tag] = NULL; |
| } |
| |
| req->req = scsi_req_new(req->dev, req->tag, |
| usb_uas_get_lun(req->lun), |
| iu->command.cdb, req); |
| if (uas->requestlog) { |
| scsi_req_print(req->req); |
| } |
| len = scsi_req_enqueue(req->req); |
| if (len) { |
| req->data_size = len; |
| scsi_req_continue(req->req); |
| } |
| return; |
| |
| invalid_tag: |
| usb_uas_queue_fake_sense(uas, tag, sense_code_INVALID_TAG); |
| return; |
| |
| overlapped_tag: |
| usb_uas_queue_fake_sense(uas, tag, sense_code_OVERLAPPED_COMMANDS); |
| return; |
| |
| bad_target: |
| usb_uas_queue_fake_sense(uas, tag, sense_code_LUN_NOT_SUPPORTED); |
| g_free(req); |
| } |
| |
| static void usb_uas_task(UASDevice *uas, uas_iu *iu) |
| { |
| uint16_t tag = be16_to_cpu(iu->hdr.tag); |
| uint64_t lun64 = be64_to_cpu(iu->task.lun); |
| SCSIDevice *dev = usb_uas_get_dev(uas, lun64); |
| int lun = usb_uas_get_lun(lun64); |
| UASRequest *req; |
| uint16_t task_tag; |
| |
| if (uas_using_streams(uas) && tag > UAS_MAX_STREAMS) { |
| goto invalid_tag; |
| } |
| req = usb_uas_find_request(uas, be16_to_cpu(iu->hdr.tag)); |
| if (req) { |
| goto overlapped_tag; |
| } |
| if (dev == NULL) { |
| goto incorrect_lun; |
| } |
| |
| switch (iu->task.function) { |
| case UAS_TMF_ABORT_TASK: |
| task_tag = be16_to_cpu(iu->task.task_tag); |
| trace_usb_uas_tmf_abort_task(uas->dev.addr, tag, task_tag); |
| req = usb_uas_find_request(uas, task_tag); |
| if (req && req->dev == dev) { |
| scsi_req_cancel(req->req); |
| } |
| usb_uas_queue_response(uas, tag, UAS_RC_TMF_COMPLETE); |
| break; |
| |
| case UAS_TMF_LOGICAL_UNIT_RESET: |
| trace_usb_uas_tmf_logical_unit_reset(uas->dev.addr, tag, lun); |
| qdev_reset_all(&dev->qdev); |
| usb_uas_queue_response(uas, tag, UAS_RC_TMF_COMPLETE); |
| break; |
| |
| default: |
| trace_usb_uas_tmf_unsupported(uas->dev.addr, tag, iu->task.function); |
| usb_uas_queue_response(uas, tag, UAS_RC_TMF_NOT_SUPPORTED); |
| break; |
| } |
| return; |
| |
| invalid_tag: |
| usb_uas_queue_response(uas, tag, UAS_RC_INVALID_INFO_UNIT); |
| return; |
| |
| overlapped_tag: |
| usb_uas_queue_response(uas, req->tag, UAS_RC_OVERLAPPED_TAG); |
| return; |
| |
| incorrect_lun: |
| usb_uas_queue_response(uas, tag, UAS_RC_INCORRECT_LUN); |
| } |
| |
| static void usb_uas_handle_data(USBDevice *dev, USBPacket *p) |
| { |
| UASDevice *uas = USB_UAS(dev); |
| uas_iu iu; |
| UASStatus *st; |
| UASRequest *req; |
| int length; |
| |
| switch (p->ep->nr) { |
| case UAS_PIPE_ID_COMMAND: |
| length = MIN(sizeof(iu), p->iov.size); |
| usb_packet_copy(p, &iu, length); |
| switch (iu.hdr.id) { |
| case UAS_UI_COMMAND: |
| usb_uas_command(uas, &iu); |
| break; |
| case UAS_UI_TASK_MGMT: |
| usb_uas_task(uas, &iu); |
| break; |
| default: |
| error_report("%s: unknown command iu: id 0x%x", |
| __func__, iu.hdr.id); |
| p->status = USB_RET_STALL; |
| break; |
| } |
| break; |
| case UAS_PIPE_ID_STATUS: |
| if (p->stream) { |
| QTAILQ_FOREACH(st, &uas->results, next) { |
| if (st->stream == p->stream) { |
| break; |
| } |
| } |
| if (st == NULL) { |
| assert(uas->status3[p->stream] == NULL); |
| uas->status3[p->stream] = p; |
| p->status = USB_RET_ASYNC; |
| break; |
| } |
| } else { |
| st = QTAILQ_FIRST(&uas->results); |
| if (st == NULL) { |
| assert(uas->status2 == NULL); |
| uas->status2 = p; |
| p->status = USB_RET_ASYNC; |
| break; |
| } |
| } |
| usb_packet_copy(p, &st->status, st->length); |
| QTAILQ_REMOVE(&uas->results, st, next); |
| g_free(st); |
| break; |
| case UAS_PIPE_ID_DATA_IN: |
| case UAS_PIPE_ID_DATA_OUT: |
| if (p->stream) { |
| req = usb_uas_find_request(uas, p->stream); |
| } else { |
| req = (p->ep->nr == UAS_PIPE_ID_DATA_IN) |
| ? uas->datain2 : uas->dataout2; |
| } |
| if (req == NULL) { |
| if (p->stream) { |
| assert(uas->data3[p->stream] == NULL); |
| uas->data3[p->stream] = p; |
| p->status = USB_RET_ASYNC; |
| break; |
| } else { |
| error_report("%s: no inflight request", __func__); |
| p->status = USB_RET_STALL; |
| break; |
| } |
| } |
| scsi_req_ref(req->req); |
| req->data = p; |
| usb_uas_copy_data(req); |
| if (p->actual_length == p->iov.size || req->complete) { |
| req->data = NULL; |
| } else { |
| req->data_async = true; |
| p->status = USB_RET_ASYNC; |
| } |
| scsi_req_unref(req->req); |
| usb_uas_start_next_transfer(uas); |
| break; |
| default: |
| error_report("%s: invalid endpoint %d", __func__, p->ep->nr); |
| p->status = USB_RET_STALL; |
| break; |
| } |
| } |
| |
| static void usb_uas_unrealize(USBDevice *dev, Error **errp) |
| { |
| UASDevice *uas = USB_UAS(dev); |
| |
| qemu_bh_delete(uas->status_bh); |
| } |
| |
| static void usb_uas_realize(USBDevice *dev, Error **errp) |
| { |
| UASDevice *uas = USB_UAS(dev); |
| DeviceState *d = DEVICE(dev); |
| |
| usb_desc_create_serial(dev); |
| usb_desc_init(dev); |
| if (d->hotplugged) { |
| uas->dev.auto_attach = 0; |
| } |
| |
| QTAILQ_INIT(&uas->results); |
| QTAILQ_INIT(&uas->requests); |
| uas->status_bh = qemu_bh_new(usb_uas_send_status_bh, uas); |
| |
| scsi_bus_new(&uas->bus, sizeof(uas->bus), DEVICE(dev), |
| &usb_uas_scsi_info, NULL); |
| } |
| |
| static const VMStateDescription vmstate_usb_uas = { |
| .name = "usb-uas", |
| .unmigratable = 1, |
| .fields = (VMStateField[]) { |
| VMSTATE_USB_DEVICE(dev, UASDevice), |
| VMSTATE_END_OF_LIST() |
| } |
| }; |
| |
| static Property uas_properties[] = { |
| DEFINE_PROP_UINT32("log-scsi-req", UASDevice, requestlog, 0), |
| DEFINE_PROP_END_OF_LIST(), |
| }; |
| |
| static void usb_uas_class_initfn(ObjectClass *klass, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(klass); |
| USBDeviceClass *uc = USB_DEVICE_CLASS(klass); |
| |
| uc->realize = usb_uas_realize; |
| uc->product_desc = desc_strings[STR_PRODUCT]; |
| uc->usb_desc = &desc; |
| uc->cancel_packet = usb_uas_cancel_io; |
| uc->handle_attach = usb_desc_attach; |
| uc->handle_reset = usb_uas_handle_reset; |
| uc->handle_control = usb_uas_handle_control; |
| uc->handle_data = usb_uas_handle_data; |
| uc->unrealize = usb_uas_unrealize; |
| uc->attached_settable = true; |
| set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); |
| dc->fw_name = "storage"; |
| dc->vmsd = &vmstate_usb_uas; |
| device_class_set_props(dc, uas_properties); |
| } |
| |
| static const TypeInfo uas_info = { |
| .name = TYPE_USB_UAS, |
| .parent = TYPE_USB_DEVICE, |
| .instance_size = sizeof(UASDevice), |
| .class_init = usb_uas_class_initfn, |
| }; |
| |
| static void usb_uas_register_types(void) |
| { |
| type_register_static(&uas_info); |
| } |
| |
| type_init(usb_uas_register_types) |