992 lines
33 KiB
C
992 lines
33 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <dev/isci/isci.h>
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#include <cam/scsi/scsi_all.h>
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#include <cam/scsi/scsi_message.h>
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#include <dev/isci/scil/intel_sas.h>
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#include <dev/isci/scil/sci_util.h>
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#include <dev/isci/scil/scif_io_request.h>
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#include <dev/isci/scil/scif_controller.h>
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#include <dev/isci/scil/scif_remote_device.h>
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#include <dev/isci/scil/scif_user_callback.h>
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#include <dev/isci/scil/scic_io_request.h>
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#include <dev/isci/scil/scic_user_callback.h>
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/**
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* @brief This user callback will inform the user that an IO request has
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* completed.
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*
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* @param[in] controller This parameter specifies the controller on
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* which the IO request is completing.
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* @param[in] remote_device This parameter specifies the remote device on
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* which this request is completing.
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* @param[in] io_request This parameter specifies the IO request that has
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* completed.
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* @param[in] completion_status This parameter specifies the results of
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* the IO request operation. SCI_IO_SUCCESS indicates
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* successful completion.
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*
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* @return none
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*/
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void
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scif_cb_io_request_complete(SCI_CONTROLLER_HANDLE_T scif_controller,
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SCI_REMOTE_DEVICE_HANDLE_T remote_device,
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SCI_IO_REQUEST_HANDLE_T io_request, SCI_IO_STATUS completion_status)
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{
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struct ISCI_IO_REQUEST *isci_request =
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(struct ISCI_IO_REQUEST *)sci_object_get_association(io_request);
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scif_controller_complete_io(scif_controller, remote_device, io_request);
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isci_io_request_complete(scif_controller, remote_device, isci_request,
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completion_status);
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}
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void
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isci_io_request_complete(SCI_CONTROLLER_HANDLE_T scif_controller,
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SCI_REMOTE_DEVICE_HANDLE_T remote_device,
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struct ISCI_IO_REQUEST *isci_request, SCI_IO_STATUS completion_status)
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{
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struct ISCI_CONTROLLER *isci_controller;
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struct ISCI_REMOTE_DEVICE *isci_remote_device;
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union ccb *ccb;
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BOOL complete_ccb;
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struct ccb_scsiio *csio;
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complete_ccb = TRUE;
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isci_controller = (struct ISCI_CONTROLLER *) sci_object_get_association(scif_controller);
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isci_remote_device =
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(struct ISCI_REMOTE_DEVICE *) sci_object_get_association(remote_device);
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ccb = isci_request->ccb;
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csio = &ccb->csio;
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ccb->ccb_h.status &= ~CAM_STATUS_MASK;
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switch (completion_status) {
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case SCI_IO_SUCCESS:
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case SCI_IO_SUCCESS_COMPLETE_BEFORE_START:
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#if __FreeBSD_version >= 900026
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if (ccb->ccb_h.func_code == XPT_SMP_IO) {
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void *smp_response =
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scif_io_request_get_response_iu_address(
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isci_request->sci_object);
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memcpy(ccb->smpio.smp_response, smp_response,
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ccb->smpio.smp_response_len);
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}
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#endif
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ccb->ccb_h.status |= CAM_REQ_CMP;
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break;
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case SCI_IO_SUCCESS_IO_DONE_EARLY:
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ccb->ccb_h.status |= CAM_REQ_CMP;
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ccb->csio.resid = ccb->csio.dxfer_len -
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scif_io_request_get_number_of_bytes_transferred(
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isci_request->sci_object);
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break;
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case SCI_IO_FAILURE_RESPONSE_VALID:
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{
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SCI_SSP_RESPONSE_IU_T * response_buffer;
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uint32_t sense_length;
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int error_code, sense_key, asc, ascq;
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response_buffer = (SCI_SSP_RESPONSE_IU_T *)
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scif_io_request_get_response_iu_address(
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isci_request->sci_object);
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sense_length = sci_ssp_get_sense_data_length(
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response_buffer->sense_data_length);
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sense_length = MIN(csio->sense_len, sense_length);
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memcpy(&csio->sense_data, response_buffer->data, sense_length);
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csio->sense_resid = csio->sense_len - sense_length;
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csio->scsi_status = response_buffer->status;
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ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR;
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ccb->ccb_h.status |= CAM_AUTOSNS_VALID;
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scsi_extract_sense( &csio->sense_data, &error_code, &sense_key,
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&asc, &ascq );
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isci_log_message(1, "ISCI",
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"isci: bus=%x target=%x lun=%x cdb[0]=%x status=%x key=%x asc=%x ascq=%x\n",
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ccb->ccb_h.path_id, ccb->ccb_h.target_id,
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ccb->ccb_h.target_lun, scsiio_cdb_ptr(csio),
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csio->scsi_status, sense_key, asc, ascq);
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break;
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}
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case SCI_IO_FAILURE_REMOTE_DEVICE_RESET_REQUIRED:
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isci_remote_device_reset(isci_remote_device, NULL);
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ccb->ccb_h.status |= CAM_REQ_TERMIO;
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isci_log_message(0, "ISCI",
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"isci: bus=%x target=%x lun=%x cdb[0]=%x remote device reset required\n",
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ccb->ccb_h.path_id, ccb->ccb_h.target_id,
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ccb->ccb_h.target_lun, scsiio_cdb_ptr(csio));
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break;
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case SCI_IO_FAILURE_TERMINATED:
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ccb->ccb_h.status |= CAM_REQ_TERMIO;
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isci_log_message(0, "ISCI",
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"isci: bus=%x target=%x lun=%x cdb[0]=%x terminated\n",
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ccb->ccb_h.path_id, ccb->ccb_h.target_id,
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ccb->ccb_h.target_lun, scsiio_cdb_ptr(csio));
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break;
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case SCI_IO_FAILURE_INVALID_STATE:
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case SCI_IO_FAILURE_INSUFFICIENT_RESOURCES:
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complete_ccb = FALSE;
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break;
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case SCI_IO_FAILURE_INVALID_REMOTE_DEVICE:
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ccb->ccb_h.status |= CAM_DEV_NOT_THERE;
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break;
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case SCI_IO_FAILURE_NO_NCQ_TAG_AVAILABLE:
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{
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struct ccb_relsim ccb_relsim;
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struct cam_path *path;
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xpt_create_path(&path, NULL,
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cam_sim_path(isci_controller->sim),
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isci_remote_device->index, 0);
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xpt_setup_ccb(&ccb_relsim.ccb_h, path, 5);
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ccb_relsim.ccb_h.func_code = XPT_REL_SIMQ;
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ccb_relsim.ccb_h.flags = CAM_DEV_QFREEZE;
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ccb_relsim.release_flags = RELSIM_ADJUST_OPENINGS;
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ccb_relsim.openings =
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scif_remote_device_get_max_queue_depth(remote_device);
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xpt_action((union ccb *)&ccb_relsim);
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xpt_free_path(path);
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complete_ccb = FALSE;
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}
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break;
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case SCI_IO_FAILURE:
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case SCI_IO_FAILURE_REQUIRES_SCSI_ABORT:
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case SCI_IO_FAILURE_UNSUPPORTED_PROTOCOL:
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case SCI_IO_FAILURE_PROTOCOL_VIOLATION:
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case SCI_IO_FAILURE_INVALID_PARAMETER_VALUE:
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case SCI_IO_FAILURE_CONTROLLER_SPECIFIC_ERR:
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default:
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isci_log_message(1, "ISCI",
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"isci: bus=%x target=%x lun=%x cdb[0]=%x completion status=%x\n",
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ccb->ccb_h.path_id, ccb->ccb_h.target_id,
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ccb->ccb_h.target_lun, scsiio_cdb_ptr(csio),
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completion_status);
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ccb->ccb_h.status |= CAM_REQ_CMP_ERR;
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break;
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}
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callout_stop(&isci_request->parent.timer);
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bus_dmamap_sync(isci_request->parent.dma_tag,
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isci_request->parent.dma_map,
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BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
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bus_dmamap_unload(isci_request->parent.dma_tag,
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isci_request->parent.dma_map);
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isci_request->ccb = NULL;
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sci_pool_put(isci_controller->request_pool,
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(struct ISCI_REQUEST *)isci_request);
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if (complete_ccb) {
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if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
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/* ccb will be completed with some type of non-success
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* status. So temporarily freeze the queue until the
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* upper layers can act on the status. The
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* CAM_DEV_QFRZN flag will then release the queue
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* after the status is acted upon.
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*/
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ccb->ccb_h.status |= CAM_DEV_QFRZN;
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xpt_freeze_devq(ccb->ccb_h.path, 1);
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}
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if (ccb->ccb_h.status & CAM_SIM_QUEUED) {
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KASSERT(ccb == isci_remote_device->queued_ccb_in_progress,
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("multiple internally queued ccbs in flight"));
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TAILQ_REMOVE(&isci_remote_device->queued_ccbs,
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&ccb->ccb_h, sim_links.tqe);
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ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
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/*
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* This CCB that was in the queue was completed, so
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* set the in_progress pointer to NULL denoting that
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* we can retry another CCB from the queue. We only
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* allow one CCB at a time from the queue to be
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* in progress so that we can effectively maintain
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* ordering.
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*/
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isci_remote_device->queued_ccb_in_progress = NULL;
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}
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if (isci_remote_device->frozen_lun_mask != 0) {
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isci_remote_device_release_device_queue(isci_remote_device);
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}
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xpt_done(ccb);
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if (isci_controller->is_frozen == TRUE) {
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isci_controller->is_frozen = FALSE;
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xpt_release_simq(isci_controller->sim, TRUE);
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}
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} else {
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isci_remote_device_freeze_lun_queue(isci_remote_device,
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ccb->ccb_h.target_lun);
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if (ccb->ccb_h.status & CAM_SIM_QUEUED) {
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KASSERT(ccb == isci_remote_device->queued_ccb_in_progress,
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("multiple internally queued ccbs in flight"));
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/*
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* Do nothing, CCB is already on the device's queue.
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* We leave it on the queue, to be retried again
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* next time a CCB on this device completes, or we
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* get a ready notification for this device.
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*/
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isci_log_message(1, "ISCI", "already queued %p %x\n",
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ccb, scsiio_cdb_ptr(csio));
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isci_remote_device->queued_ccb_in_progress = NULL;
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} else {
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isci_log_message(1, "ISCI", "queue %p %x\n", ccb,
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scsiio_cdb_ptr(csio));
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ccb->ccb_h.status |= CAM_SIM_QUEUED;
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TAILQ_INSERT_TAIL(&isci_remote_device->queued_ccbs,
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&ccb->ccb_h, sim_links.tqe);
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}
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}
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}
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/**
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* @brief This callback method asks the user to provide the physical
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* address for the supplied virtual address when building an
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* io request object.
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*
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* @param[in] controller This parameter is the core controller object
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* handle.
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* @param[in] io_request This parameter is the io request object handle
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* for which the physical address is being requested.
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* @param[in] virtual_address This parameter is the virtual address which
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* is to be returned as a physical address.
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* @param[out] physical_address The physical address for the supplied virtual
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* address.
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*
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* @return None.
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*/
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void
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scic_cb_io_request_get_physical_address(SCI_CONTROLLER_HANDLE_T controller,
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SCI_IO_REQUEST_HANDLE_T io_request, void *virtual_address,
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SCI_PHYSICAL_ADDRESS *physical_address)
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{
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SCI_IO_REQUEST_HANDLE_T scif_request =
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sci_object_get_association(io_request);
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struct ISCI_REQUEST *isci_request =
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sci_object_get_association(scif_request);
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if(isci_request != NULL) {
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/* isci_request is not NULL, meaning this is a request initiated
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* by CAM or the isci layer (i.e. device reset for I/O
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* timeout). Therefore we can calculate the physical address
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* based on the address we stored in the struct ISCI_REQUEST
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* object.
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*/
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*physical_address = isci_request->physical_address +
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(uintptr_t)virtual_address -
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(uintptr_t)isci_request;
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} else {
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/* isci_request is NULL, meaning this is a request generated
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* internally by SCIL (i.e. for SMP requests or NCQ error
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* recovery). Therefore we calculate the physical address
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* based on the controller's uncached controller memory buffer,
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* since we know that this is what SCIL uses for internal
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* framework requests.
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*/
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SCI_CONTROLLER_HANDLE_T scif_controller =
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(SCI_CONTROLLER_HANDLE_T) sci_object_get_association(controller);
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struct ISCI_CONTROLLER *isci_controller =
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(struct ISCI_CONTROLLER *)sci_object_get_association(scif_controller);
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U64 virt_addr_offset = (uintptr_t)virtual_address -
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(U64)isci_controller->uncached_controller_memory.virtual_address;
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*physical_address =
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isci_controller->uncached_controller_memory.physical_address
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+ virt_addr_offset;
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}
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}
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/**
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* @brief This callback method asks the user to provide the address for
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* the command descriptor block (CDB) associated with this IO request.
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*
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* @param[in] scif_user_io_request This parameter points to the user's
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* IO request object. It is a cookie that allows the user to
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* provide the necessary information for this callback.
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*
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* @return This method returns the virtual address of the CDB.
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*/
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void *
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scif_cb_io_request_get_cdb_address(void * scif_user_io_request)
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{
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struct ISCI_IO_REQUEST *isci_request =
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(struct ISCI_IO_REQUEST *)scif_user_io_request;
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return (scsiio_cdb_ptr(&isci_request->ccb->csio));
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}
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/**
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* @brief This callback method asks the user to provide the length of
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* the command descriptor block (CDB) associated with this IO request.
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*
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* @param[in] scif_user_io_request This parameter points to the user's
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* IO request object. It is a cookie that allows the user to
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* provide the necessary information for this callback.
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*
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* @return This method returns the length of the CDB.
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*/
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uint32_t
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scif_cb_io_request_get_cdb_length(void * scif_user_io_request)
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{
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struct ISCI_IO_REQUEST *isci_request =
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(struct ISCI_IO_REQUEST *)scif_user_io_request;
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return (isci_request->ccb->csio.cdb_len);
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}
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/**
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* @brief This callback method asks the user to provide the Logical Unit (LUN)
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* associated with this IO request.
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*
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* @note The contents of the value returned from this callback are defined
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* by the protocol standard (e.g. T10 SAS specification). Please
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* refer to the transport command information unit description
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* in the associated standard.
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*
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* @param[in] scif_user_io_request This parameter points to the user's
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* IO request object. It is a cookie that allows the user to
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* provide the necessary information for this callback.
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*
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* @return This method returns the LUN associated with this request.
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*/
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uint32_t
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scif_cb_io_request_get_lun(void * scif_user_io_request)
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{
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struct ISCI_IO_REQUEST *isci_request =
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(struct ISCI_IO_REQUEST *)scif_user_io_request;
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return (isci_request->ccb->ccb_h.target_lun);
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}
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/**
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* @brief This callback method asks the user to provide the task attribute
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* associated with this IO request.
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*
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* @note The contents of the value returned from this callback are defined
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* by the protocol standard (e.g. T10 SAS specification). Please
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* refer to the transport command information unit description
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* in the associated standard.
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*
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* @param[in] scif_user_io_request This parameter points to the user's
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* IO request object. It is a cookie that allows the user to
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* provide the necessary information for this callback.
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*
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* @return This method returns the task attribute associated with this
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* IO request.
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*/
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uint32_t
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scif_cb_io_request_get_task_attribute(void * scif_user_io_request)
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{
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struct ISCI_IO_REQUEST *isci_request =
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(struct ISCI_IO_REQUEST *)scif_user_io_request;
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uint32_t task_attribute;
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if((isci_request->ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) != 0)
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switch(isci_request->ccb->csio.tag_action) {
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case MSG_HEAD_OF_Q_TAG:
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task_attribute = SCI_SAS_HEAD_OF_QUEUE_ATTRIBUTE;
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break;
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case MSG_ORDERED_Q_TAG:
|
|
task_attribute = SCI_SAS_ORDERED_ATTRIBUTE;
|
|
break;
|
|
|
|
case MSG_ACA_TASK:
|
|
task_attribute = SCI_SAS_ACA_ATTRIBUTE;
|
|
break;
|
|
|
|
default:
|
|
task_attribute = SCI_SAS_SIMPLE_ATTRIBUTE;
|
|
break;
|
|
}
|
|
else
|
|
task_attribute = SCI_SAS_SIMPLE_ATTRIBUTE;
|
|
|
|
return (task_attribute);
|
|
}
|
|
|
|
/**
|
|
* @brief This callback method asks the user to provide the command priority
|
|
* associated with this IO request.
|
|
*
|
|
* @note The contents of the value returned from this callback are defined
|
|
* by the protocol standard (e.g. T10 SAS specification). Please
|
|
* refer to the transport command information unit description
|
|
* in the associated standard.
|
|
*
|
|
* @param[in] scif_user_io_request This parameter points to the user's
|
|
* IO request object. It is a cookie that allows the user to
|
|
* provide the necessary information for this callback.
|
|
*
|
|
* @return This method returns the command priority associated with this
|
|
* IO request.
|
|
*/
|
|
uint32_t
|
|
scif_cb_io_request_get_command_priority(void * scif_user_io_request)
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
/**
|
|
* @brief This method simply returns the virtual address associated
|
|
* with the scsi_io and byte_offset supplied parameters.
|
|
*
|
|
* @note This callback is not utilized in the fast path. The expectation
|
|
* is that this method is utilized for items such as SCSI to ATA
|
|
* translation for commands like INQUIRY, READ CAPACITY, etc.
|
|
*
|
|
* @param[in] scif_user_io_request This parameter points to the user's
|
|
* IO request object. It is a cookie that allows the user to
|
|
* provide the necessary information for this callback.
|
|
* @param[in] byte_offset This parameter specifies the offset into the data
|
|
* buffers pointed to by the SGL. The byte offset starts at 0
|
|
* and continues until the last byte pointed to be the last SGL
|
|
* element.
|
|
*
|
|
* @return A virtual address pointer to the location specified by the
|
|
* parameters.
|
|
*/
|
|
uint8_t *
|
|
scif_cb_io_request_get_virtual_address_from_sgl(void * scif_user_io_request,
|
|
uint32_t byte_offset)
|
|
{
|
|
struct ISCI_IO_REQUEST *isci_request;
|
|
union ccb *ccb;
|
|
|
|
|
|
isci_request = scif_user_io_request;
|
|
ccb = isci_request->ccb;
|
|
|
|
/*
|
|
* This callback is only invoked for SCSI/ATA translation of
|
|
* PIO commands such as INQUIRY and READ_CAPACITY, to allow
|
|
* the driver to write the translated data directly into the
|
|
* data buffer. It is never invoked for READ/WRITE commands.
|
|
* The driver currently assumes only READ/WRITE commands will
|
|
* be unmapped.
|
|
*
|
|
* As a safeguard against future changes to unmapped commands,
|
|
* add an explicit panic here should the DATA_MASK != VADDR.
|
|
* Otherwise, we would return some garbage pointer back to the
|
|
* caller which would result in a panic or more subtle data
|
|
* corruption later on.
|
|
*/
|
|
if ((ccb->ccb_h.flags & CAM_DATA_MASK) != CAM_DATA_VADDR)
|
|
panic("%s: requesting pointer into unmapped ccb", __func__);
|
|
|
|
return (ccb->csio.data_ptr + byte_offset);
|
|
}
|
|
|
|
/**
|
|
* @brief This callback method asks the user to provide the number of
|
|
* bytes to be transferred as part of this request.
|
|
*
|
|
* @param[in] scif_user_io_request This parameter points to the user's
|
|
* IO request object. It is a cookie that allows the user to
|
|
* provide the necessary information for this callback.
|
|
*
|
|
* @return This method returns the number of payload data bytes to be
|
|
* transferred for this IO request.
|
|
*/
|
|
uint32_t
|
|
scif_cb_io_request_get_transfer_length(void * scif_user_io_request)
|
|
{
|
|
struct ISCI_IO_REQUEST *isci_request =
|
|
(struct ISCI_IO_REQUEST *)scif_user_io_request;
|
|
|
|
return (isci_request->ccb->csio.dxfer_len);
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief This callback method asks the user to provide the data direction
|
|
* for this request.
|
|
*
|
|
* @param[in] scif_user_io_request This parameter points to the user's
|
|
* IO request object. It is a cookie that allows the user to
|
|
* provide the necessary information for this callback.
|
|
*
|
|
* @return This method returns the value of SCI_IO_REQUEST_DATA_OUT,
|
|
* SCI_IO_REQUEST_DATA_IN, or SCI_IO_REQUEST_NO_DATA.
|
|
*/
|
|
SCI_IO_REQUEST_DATA_DIRECTION
|
|
scif_cb_io_request_get_data_direction(void * scif_user_io_request)
|
|
{
|
|
struct ISCI_IO_REQUEST *isci_request =
|
|
(struct ISCI_IO_REQUEST *)scif_user_io_request;
|
|
|
|
switch (isci_request->ccb->ccb_h.flags & CAM_DIR_MASK) {
|
|
case CAM_DIR_IN:
|
|
return (SCI_IO_REQUEST_DATA_IN);
|
|
case CAM_DIR_OUT:
|
|
return (SCI_IO_REQUEST_DATA_OUT);
|
|
default:
|
|
return (SCI_IO_REQUEST_NO_DATA);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief This callback method asks the user to provide the address
|
|
* to where the next Scatter-Gather Element is located.
|
|
*
|
|
* Details regarding usage:
|
|
* - Regarding the first SGE: the user should initialize an index,
|
|
* or a pointer, prior to construction of the request that will
|
|
* reference the very first scatter-gather element. This is
|
|
* important since this method is called for every scatter-gather
|
|
* element, including the first element.
|
|
* - Regarding the last SGE: the user should return NULL from this
|
|
* method when this method is called and the SGL has exhausted
|
|
* all elements.
|
|
*
|
|
* @param[in] scif_user_io_request This parameter points to the user's
|
|
* IO request object. It is a cookie that allows the user to
|
|
* provide the necessary information for this callback.
|
|
* @param[in] current_sge_address This parameter specifies the address for
|
|
* the current SGE (i.e. the one that has just processed).
|
|
* @param[out] next_sge An address specifying the location for the next scatter
|
|
* gather element to be processed.
|
|
*
|
|
* @return None.
|
|
*/
|
|
void
|
|
scif_cb_io_request_get_next_sge(void * scif_user_io_request,
|
|
void * current_sge_address, void ** next_sge)
|
|
{
|
|
struct ISCI_IO_REQUEST *isci_request =
|
|
(struct ISCI_IO_REQUEST *)scif_user_io_request;
|
|
|
|
if (isci_request->current_sge_index == isci_request->num_segments)
|
|
*next_sge = NULL;
|
|
else {
|
|
bus_dma_segment_t *sge =
|
|
&isci_request->sge[isci_request->current_sge_index];
|
|
|
|
isci_request->current_sge_index++;
|
|
*next_sge = sge;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief This callback method asks the user to provide the contents of the
|
|
* "address" field in the Scatter-Gather Element.
|
|
*
|
|
* @param[in] scif_user_io_request This parameter points to the user's
|
|
* IO request object. It is a cookie that allows the user to
|
|
* provide the necessary information for this callback.
|
|
* @param[in] sge_address This parameter specifies the address for the
|
|
* SGE from which to retrieve the address field.
|
|
*
|
|
* @return A physical address specifying the contents of the SGE's address
|
|
* field.
|
|
*/
|
|
SCI_PHYSICAL_ADDRESS
|
|
scif_cb_sge_get_address_field(void *scif_user_io_request, void *sge_address)
|
|
{
|
|
bus_dma_segment_t *sge = (bus_dma_segment_t *)sge_address;
|
|
|
|
return ((SCI_PHYSICAL_ADDRESS)sge->ds_addr);
|
|
}
|
|
|
|
/**
|
|
* @brief This callback method asks the user to provide the contents of the
|
|
* "length" field in the Scatter-Gather Element.
|
|
*
|
|
* @param[in] scif_user_io_request This parameter points to the user's
|
|
* IO request object. It is a cookie that allows the user to
|
|
* provide the necessary information for this callback.
|
|
* @param[in] sge_address This parameter specifies the address for the
|
|
* SGE from which to retrieve the address field.
|
|
*
|
|
* @return This method returns the length field specified inside the SGE
|
|
* referenced by the sge_address parameter.
|
|
*/
|
|
uint32_t
|
|
scif_cb_sge_get_length_field(void *scif_user_io_request, void *sge_address)
|
|
{
|
|
bus_dma_segment_t *sge = (bus_dma_segment_t *)sge_address;
|
|
|
|
return ((uint32_t)sge->ds_len);
|
|
}
|
|
|
|
void
|
|
isci_request_construct(struct ISCI_REQUEST *request,
|
|
SCI_CONTROLLER_HANDLE_T scif_controller_handle,
|
|
bus_dma_tag_t io_buffer_dma_tag, bus_addr_t physical_address)
|
|
{
|
|
|
|
request->controller_handle = scif_controller_handle;
|
|
request->dma_tag = io_buffer_dma_tag;
|
|
request->physical_address = physical_address;
|
|
bus_dmamap_create(request->dma_tag, 0, &request->dma_map);
|
|
callout_init(&request->timer, 1);
|
|
}
|
|
|
|
static void
|
|
isci_io_request_construct(void *arg, bus_dma_segment_t *seg, int nseg,
|
|
int error)
|
|
{
|
|
union ccb *ccb;
|
|
struct ISCI_IO_REQUEST *io_request = (struct ISCI_IO_REQUEST *)arg;
|
|
SCI_REMOTE_DEVICE_HANDLE_T *device = io_request->parent.remote_device_handle;
|
|
SCI_STATUS status;
|
|
|
|
io_request->num_segments = nseg;
|
|
io_request->sge = seg;
|
|
ccb = io_request->ccb;
|
|
|
|
if (error != 0) {
|
|
ccb->ccb_h.status = CAM_REQ_INVALID;
|
|
xpt_done(ccb);
|
|
return;
|
|
}
|
|
|
|
status = scif_io_request_construct(
|
|
io_request->parent.controller_handle,
|
|
io_request->parent.remote_device_handle,
|
|
SCI_CONTROLLER_INVALID_IO_TAG, (void *)io_request,
|
|
(void *)((char*)io_request + sizeof(struct ISCI_IO_REQUEST)),
|
|
&io_request->sci_object);
|
|
|
|
if (status != SCI_SUCCESS) {
|
|
isci_io_request_complete(io_request->parent.controller_handle,
|
|
device, io_request, (SCI_IO_STATUS)status);
|
|
return;
|
|
}
|
|
|
|
sci_object_set_association(io_request->sci_object, io_request);
|
|
|
|
bus_dmamap_sync(io_request->parent.dma_tag, io_request->parent.dma_map,
|
|
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
|
|
|
|
status = (SCI_STATUS)scif_controller_start_io(
|
|
io_request->parent.controller_handle, device,
|
|
io_request->sci_object, SCI_CONTROLLER_INVALID_IO_TAG);
|
|
|
|
if (status != SCI_SUCCESS) {
|
|
isci_io_request_complete(io_request->parent.controller_handle,
|
|
device, io_request, (SCI_IO_STATUS)status);
|
|
return;
|
|
}
|
|
|
|
if (ccb->ccb_h.timeout != CAM_TIME_INFINITY)
|
|
callout_reset_sbt(&io_request->parent.timer,
|
|
SBT_1MS * ccb->ccb_h.timeout, 0, isci_io_request_timeout,
|
|
io_request, 0);
|
|
}
|
|
|
|
void
|
|
isci_io_request_execute_scsi_io(union ccb *ccb,
|
|
struct ISCI_CONTROLLER *controller)
|
|
{
|
|
target_id_t target_id = ccb->ccb_h.target_id;
|
|
struct ISCI_REQUEST *request;
|
|
struct ISCI_IO_REQUEST *io_request;
|
|
struct ISCI_REMOTE_DEVICE *device =
|
|
controller->remote_device[target_id];
|
|
int error;
|
|
|
|
if (device == NULL) {
|
|
ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
|
|
ccb->ccb_h.status &= ~CAM_STATUS_MASK;
|
|
ccb->ccb_h.status |= CAM_DEV_NOT_THERE;
|
|
xpt_done(ccb);
|
|
return;
|
|
}
|
|
|
|
if (sci_pool_empty(controller->request_pool)) {
|
|
ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
|
|
ccb->ccb_h.status &= ~CAM_STATUS_MASK;
|
|
ccb->ccb_h.status |= CAM_REQUEUE_REQ;
|
|
xpt_freeze_simq(controller->sim, 1);
|
|
controller->is_frozen = TRUE;
|
|
xpt_done(ccb);
|
|
return;
|
|
}
|
|
|
|
ASSERT(device->is_resetting == FALSE);
|
|
|
|
sci_pool_get(controller->request_pool, request);
|
|
io_request = (struct ISCI_IO_REQUEST *)request;
|
|
|
|
io_request->ccb = ccb;
|
|
io_request->current_sge_index = 0;
|
|
io_request->parent.remote_device_handle = device->sci_object;
|
|
|
|
error = bus_dmamap_load_ccb(io_request->parent.dma_tag,
|
|
io_request->parent.dma_map, ccb,
|
|
isci_io_request_construct, io_request, 0x0);
|
|
/* A resource shortage from BUSDMA will be automatically
|
|
* continued at a later point, pushing the CCB processing
|
|
* forward, which will in turn unfreeze the simq.
|
|
*/
|
|
if (error == EINPROGRESS) {
|
|
xpt_freeze_simq(controller->sim, 1);
|
|
ccb->ccb_h.flags |= CAM_RELEASE_SIMQ;
|
|
}
|
|
}
|
|
|
|
void
|
|
isci_io_request_timeout(void *arg)
|
|
{
|
|
struct ISCI_IO_REQUEST *request = (struct ISCI_IO_REQUEST *)arg;
|
|
struct ISCI_REMOTE_DEVICE *remote_device = (struct ISCI_REMOTE_DEVICE *)
|
|
sci_object_get_association(request->parent.remote_device_handle);
|
|
struct ISCI_CONTROLLER *controller = remote_device->domain->controller;
|
|
|
|
mtx_lock(&controller->lock);
|
|
isci_remote_device_reset(remote_device, NULL);
|
|
mtx_unlock(&controller->lock);
|
|
}
|
|
|
|
#if __FreeBSD_version >= 900026
|
|
/**
|
|
* @brief This callback method gets the size of and pointer to the buffer
|
|
* (if any) containing the request buffer for an SMP request.
|
|
*
|
|
* @param[in] core_request This parameter specifies the SCI core's request
|
|
* object associated with the SMP request.
|
|
* @param[out] smp_request_buffer This parameter returns a pointer to the
|
|
* payload portion of the SMP request - i.e. everything after
|
|
* the SMP request header.
|
|
*
|
|
* @return Size of the request buffer in bytes. This does *not* include
|
|
* the size of the SMP request header.
|
|
*/
|
|
static uint32_t
|
|
smp_io_request_cb_get_request_buffer(SCI_IO_REQUEST_HANDLE_T core_request,
|
|
uint8_t ** smp_request_buffer)
|
|
{
|
|
struct ISCI_IO_REQUEST *isci_request = (struct ISCI_IO_REQUEST *)
|
|
sci_object_get_association(sci_object_get_association(core_request));
|
|
|
|
*smp_request_buffer = isci_request->ccb->smpio.smp_request +
|
|
sizeof(SMP_REQUEST_HEADER_T);
|
|
|
|
return (isci_request->ccb->smpio.smp_request_len -
|
|
sizeof(SMP_REQUEST_HEADER_T));
|
|
}
|
|
|
|
/**
|
|
* @brief This callback method gets the SMP function for an SMP request.
|
|
*
|
|
* @param[in] core_request This parameter specifies the SCI core's request
|
|
* object associated with the SMP request.
|
|
*
|
|
* @return SMP function for the SMP request.
|
|
*/
|
|
static uint8_t
|
|
smp_io_request_cb_get_function(SCI_IO_REQUEST_HANDLE_T core_request)
|
|
{
|
|
struct ISCI_IO_REQUEST *isci_request = (struct ISCI_IO_REQUEST *)
|
|
sci_object_get_association(sci_object_get_association(core_request));
|
|
SMP_REQUEST_HEADER_T *header =
|
|
(SMP_REQUEST_HEADER_T *)isci_request->ccb->smpio.smp_request;
|
|
|
|
return (header->function);
|
|
}
|
|
|
|
/**
|
|
* @brief This callback method gets the SMP frame type for an SMP request.
|
|
*
|
|
* @param[in] core_request This parameter specifies the SCI core's request
|
|
* object associated with the SMP request.
|
|
*
|
|
* @return SMP frame type for the SMP request.
|
|
*/
|
|
static uint8_t
|
|
smp_io_request_cb_get_frame_type(SCI_IO_REQUEST_HANDLE_T core_request)
|
|
{
|
|
struct ISCI_IO_REQUEST *isci_request = (struct ISCI_IO_REQUEST *)
|
|
sci_object_get_association(sci_object_get_association(core_request));
|
|
SMP_REQUEST_HEADER_T *header =
|
|
(SMP_REQUEST_HEADER_T *)isci_request->ccb->smpio.smp_request;
|
|
|
|
return (header->smp_frame_type);
|
|
}
|
|
|
|
/**
|
|
* @brief This callback method gets the allocated response length for an SMP request.
|
|
*
|
|
* @param[in] core_request This parameter specifies the SCI core's request
|
|
* object associated with the SMP request.
|
|
*
|
|
* @return Allocated response length for the SMP request.
|
|
*/
|
|
static uint8_t
|
|
smp_io_request_cb_get_allocated_response_length(
|
|
SCI_IO_REQUEST_HANDLE_T core_request)
|
|
{
|
|
struct ISCI_IO_REQUEST *isci_request = (struct ISCI_IO_REQUEST *)
|
|
sci_object_get_association(sci_object_get_association(core_request));
|
|
SMP_REQUEST_HEADER_T *header =
|
|
(SMP_REQUEST_HEADER_T *)isci_request->ccb->smpio.smp_request;
|
|
|
|
return (header->allocated_response_length);
|
|
}
|
|
|
|
static SCI_STATUS
|
|
isci_smp_request_construct(struct ISCI_IO_REQUEST *request)
|
|
{
|
|
SCI_STATUS status;
|
|
SCIC_SMP_PASSTHRU_REQUEST_CALLBACKS_T callbacks;
|
|
|
|
status = scif_request_construct(request->parent.controller_handle,
|
|
request->parent.remote_device_handle, SCI_CONTROLLER_INVALID_IO_TAG,
|
|
(void *)request,
|
|
(void *)((char*)request + sizeof(struct ISCI_IO_REQUEST)),
|
|
&request->sci_object);
|
|
|
|
if (status == SCI_SUCCESS) {
|
|
callbacks.scic_cb_smp_passthru_get_request =
|
|
&smp_io_request_cb_get_request_buffer;
|
|
callbacks.scic_cb_smp_passthru_get_function =
|
|
&smp_io_request_cb_get_function;
|
|
callbacks.scic_cb_smp_passthru_get_frame_type =
|
|
&smp_io_request_cb_get_frame_type;
|
|
callbacks.scic_cb_smp_passthru_get_allocated_response_length =
|
|
&smp_io_request_cb_get_allocated_response_length;
|
|
|
|
/* create the smp passthrough part of the io request */
|
|
status = scic_io_request_construct_smp_pass_through(
|
|
scif_io_request_get_scic_handle(request->sci_object),
|
|
&callbacks);
|
|
}
|
|
|
|
return (status);
|
|
}
|
|
|
|
void
|
|
isci_io_request_execute_smp_io(union ccb *ccb,
|
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struct ISCI_CONTROLLER *controller)
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{
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SCI_STATUS status;
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target_id_t target_id = ccb->ccb_h.target_id;
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struct ISCI_REQUEST *request;
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struct ISCI_IO_REQUEST *io_request;
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SCI_REMOTE_DEVICE_HANDLE_T smp_device_handle;
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struct ISCI_REMOTE_DEVICE *end_device = controller->remote_device[target_id];
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/* SMP commands are sent to an end device, because SMP devices are not
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* exposed to the kernel. It is our responsibility to use this method
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* to get the SMP device that contains the specified end device. If
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* the device is direct-attached, the handle will come back NULL, and
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* we'll just fail the SMP_IO with DEV_NOT_THERE.
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*/
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scif_remote_device_get_containing_device(end_device->sci_object,
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&smp_device_handle);
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if (smp_device_handle == NULL) {
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ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
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ccb->ccb_h.status &= ~CAM_STATUS_MASK;
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ccb->ccb_h.status |= CAM_DEV_NOT_THERE;
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xpt_done(ccb);
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return;
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}
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if (sci_pool_empty(controller->request_pool)) {
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ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
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ccb->ccb_h.status &= ~CAM_STATUS_MASK;
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ccb->ccb_h.status |= CAM_REQUEUE_REQ;
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xpt_freeze_simq(controller->sim, 1);
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controller->is_frozen = TRUE;
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xpt_done(ccb);
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return;
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}
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ASSERT(device->is_resetting == FALSE);
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sci_pool_get(controller->request_pool, request);
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io_request = (struct ISCI_IO_REQUEST *)request;
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io_request->ccb = ccb;
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io_request->parent.remote_device_handle = smp_device_handle;
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status = isci_smp_request_construct(io_request);
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if (status != SCI_SUCCESS) {
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isci_io_request_complete(controller->scif_controller_handle,
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smp_device_handle, io_request, (SCI_IO_STATUS)status);
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return;
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}
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sci_object_set_association(io_request->sci_object, io_request);
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status = (SCI_STATUS) scif_controller_start_io(
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controller->scif_controller_handle, smp_device_handle,
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io_request->sci_object, SCI_CONTROLLER_INVALID_IO_TAG);
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if (status != SCI_SUCCESS) {
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isci_io_request_complete(controller->scif_controller_handle,
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smp_device_handle, io_request, (SCI_IO_STATUS)status);
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return;
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}
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if (ccb->ccb_h.timeout != CAM_TIME_INFINITY)
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callout_reset_sbt(&io_request->parent.timer,
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SBT_1MS * ccb->ccb_h.timeout, 0, isci_io_request_timeout,
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request, 0);
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}
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#endif
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