te
Copyright (c) 2006 Sun Microsystems, Inc., All Rights Reserved
Copyright 2014 Garrett D'Amore <garrett@damore.org>
The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
scsi_hba_attach_setup, scsi_hba_detach - SCSI HBA attach and detach routines

#include <sys/scsi/scsi.h>



int scsi_hba_attach_setup(dev_info_t *dip, ddi_dma_attr_t *hba_dma_attr,
 scsi_hba_tran_t *hba_tran, int hba_flags);

int scsi_hba_detach(dev_info_t *dip);

Solaris architecture specific (Solaris DDI).

dip hba_tran hba_flags hba_options hba_dma_attr

The scsi_hba_attach_setup() function registers the hba_dma_attr DMA attributes and the hba_tran transport vectors of each instance of the HBA device defined by dip. The HBA driver can pass different DMA attributes and the transport vectors for each instance of the device to support any constraints imposed by the HBA itself.

The scsi_hba_attach_setup() function uses the dev_bus_ops field in the dev_ops(9S) structure. The HBA driver should initialize this field to NULL before calling scsi_hba_attach_setup().

If SCSI_HBA_TRAN_CLONE is requested in hba_flags, the hba_tran structure is cloned once for each target that is attached to the HBA. The structure is cloned before the tran_tgt_init(9E) entry point is called to initialize a target. At all subsequent HBA entry points, including tran_tgt_init(9E), the scsi_hba_tran_t structure passed as an argument or found in a scsi_address structure is the cloned scsi_hba_tran_t structure,which allows the HBA to use the tran_tgt_private field in the scsi_hba_tran_t structure to point to per-target data. The HBA should free only the same scsi_hba_tran_t structure allocated when the HBA detaches. All cloned scsi_hba_tran_t structures that are allocated by the system are freed by the system.

The flags SCSI_HBA_TRAN_CDB and SCSI_HBA_TRAN_SCB are only valid when tran_setup_pkt() is used. See tran_setup_pkt(9E) for information on using these flags.

The scsi_hba_attach_setup() function attaches a number of integer-valued properties to dip, unless properties of the same name are already attached to the node. An HBA driver should retrieve these configuration parameters via ddi_prop_get_int(9F), and respect any settings for features provided the HBA. scsi-options

SCSI_OPTIONS_DR SCSI_OPTIONS_TAG SCSI_OPTIONS_PARITY SCSI_OPTIONS_QAS SCSI_OPTIONS_FAST SCSI_OPTIONS_FAST20 SCSI_OPTIONS_FAST40 SCSI_OPTIONS_FAST80 SCSI_OPTIONS_FAST160 SCSI_OPTIONS_FAST320 SCSI_OPTIONS_WIDE SCSI_OPTIONS_SYNC scsi-reset-delay scsi-selection-timeout

The scsi_hba_detach() function removes the reference to the DMA attributes structure and the transport vector for the given instance of an HBA driver.

The scsi_hba_attach_setup() and scsi_hba_detach() functions return DDI_SUCCESS if the function call succeeds, and return DDI_FAILURE on failure.

The scsi_hba_attach_setup() function should be called from attach(9E). The scsi_hba_detach() function should be called from detach(9E).

attach(9E), detach(9E), tran_setup_pkt(9E), tran_tgt_init(9E), ddi_prop_get_int(9F), ddi_dma_attr(9S), dev_ops(9S), scsi_address(9S), scsi_hba_tran(9S)

Writing Device Drivers

It is the HBA driver's responsibility to ensure that no more transport requests will be taken on behalf of any SCSI target device driver after scsi_hba_detach() is called.