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freebsd-skq/sys/dev/isci/scil/scic_sds_library.c
Jim Harris f11c7f6305 Add isci(4) driver for amd64 and i386 targets. 
The isci driver is for the integrated SAS controller in the Intel C600
(Patsburg) chipset.  Source files in sys/dev/isci directory are
FreeBSD-specific, and sys/dev/isci/scil subdirectory contains
an OS-agnostic library (SCIL) published by Intel to control the SAS
controller.  This library is used primarily as-is in this driver, with
some post-processing to better integrate into the kernel build
environment.

isci.4 and a README in the sys/dev/isci directory contain a few
additional details.

This driver is only built for amd64 and i386 targets.

Sponsored by: Intel
Reviewed by: scottl
Approved by: scottl
2012-01-31 19:38:18 +00:00

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/*-
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/**
* @file
*
* @brief This file contains the implementation of the public methods for a
* SCIC_SDS_LIBRARY object.
*/
#include <dev/isci/scil/scic_library.h>
#include <dev/isci/scil/scic_sds_library.h>
#include <dev/isci/scil/scic_sds_controller.h>
#include <dev/isci/scil/scic_sds_request.h>
#include <dev/isci/scil/scic_sds_remote_device.h>
#include <dev/isci/scil/intel_pci.h>
#include <dev/isci/scil/scic_sds_pci.h>
#include <dev/isci/scil/scu_constants.h>
struct SCIC_SDS_CONTROLLER;
#define SCIC_LIBRARY_CONTROLLER_MEMORY_START(library) \
((char *)(library) + sizeof(SCIC_SDS_LIBRARY_T))
// ---------------------------------------------------------------------------
U32 scic_library_get_object_size(
U8 max_controller_count
)
{
return sizeof(SCIC_SDS_LIBRARY_T)
+ scic_sds_controller_get_object_size() * max_controller_count;
}
// ---------------------------------------------------------------------------
SCI_LIBRARY_HANDLE_T scic_library_construct(
void * library_memory,
U8 max_controller_count
)
{
SCI_STATUS status;
SCIC_SDS_LIBRARY_T *this_library;
this_library = (SCIC_SDS_LIBRARY_T *)library_memory;
this_library->max_controller_count = max_controller_count;
this_library->controllers =
(SCIC_SDS_CONTROLLER_T *)((char *)library_memory + sizeof(SCIC_SDS_LIBRARY_T));
SCI_BASE_LIBRARY_CONSTRUCT(this_library,
&this_library->parent,
max_controller_count,
struct SCIC_SDS_CONTROLLER,
status);
return this_library;
}
// ---------------------------------------------------------------------------
void scic_library_set_pci_info(
SCI_LIBRARY_HANDLE_T library,
SCI_PCI_COMMON_HEADER_T * pci_header
)
{
SCIC_SDS_LIBRARY_T *this_library;
this_library = (SCIC_SDS_LIBRARY_T *)library;
this_library->pci_device = pci_header->device_id;
#if defined(PBG_HBA_A0_BUILD)
this_library->pci_revision = SCIC_SDS_PCI_REVISION_A0;
#elif defined(PBG_HBA_A2_BUILD)
this_library->pci_revision = SCIC_SDS_PCI_REVISION_A2;
#elif defined(PBG_HBA_BETA_BUILD)
this_library->pci_revision = SCIC_SDS_PCI_REVISION_B0;
#elif defined(PBG_BUILD)
// The SCU PCI function revision ID for A0/A2 is not populated
// properly. As a result, we force the revision ID to A2 for
// this situation. Therefore, the standard PBG build will not
// work for A0.
if (pci_header->revision == SCIC_SDS_PCI_REVISION_A0)
this_library->pci_revision = SCIC_SDS_PCI_REVISION_A2;
else
this_library->pci_revision = pci_header->revision;
#endif
}
// ---------------------------------------------------------------------------
SCI_STATUS scic_library_allocate_controller(
SCI_LIBRARY_HANDLE_T library,
SCI_CONTROLLER_HANDLE_T *new_controller
)
{
SCI_STATUS status;
SCIC_SDS_LIBRARY_T *this_library;
this_library = (SCIC_SDS_LIBRARY_T *)library;
if (
( (this_library->pci_device >= 0x1D60)
&& (this_library->pci_device <= 0x1D62)
)
|| ( (this_library->pci_device >= 0x1D64)
&& (this_library->pci_device <= 0x1D65)
)
|| ( (this_library->pci_device >= 0x1D68)
&& (this_library->pci_device <= 0x1D6F)
)
)
{
SCI_BASE_LIBRARY_ALLOCATE_CONTROLLER(
this_library, new_controller, &status);
}
else
status = SCI_FAILURE_UNSUPPORTED_PCI_DEVICE_ID;
return status;
}
// ---------------------------------------------------------------------------
SCI_STATUS scic_library_free_controller(
SCI_LIBRARY_HANDLE_T library,
SCI_CONTROLLER_HANDLE_T controller
)
{
SCI_STATUS status;
SCIC_SDS_LIBRARY_T *this_library;
this_library = (SCIC_SDS_LIBRARY_T *)library;
SCI_BASE_LIBRARY_FREE_CONTROLLER(
this_library, controller, struct SCIC_SDS_CONTROLLER, &status);
return status;
}
// ---------------------------------------------------------------------------
U8 scic_library_get_pci_device_controller_count(
SCI_LIBRARY_HANDLE_T library
)
{
SCIC_SDS_LIBRARY_T *this_library;
U16 device_id;
this_library = (SCIC_SDS_LIBRARY_T *)library;
device_id = this_library->pci_device;
//Check if we are on a b0 or c0 which has 2 controllers
if (
// Warning: If 0x1d66 is ever defined to be a single controller
// this logic will fail.
// If 0x1d63 or 0x1d67 is ever defined to be dual
// controller this logic will fail.
((device_id & 0xFFF1) == 0x1D60)
&& (
(this_library->pci_revision == SCU_PBG_HBA_REV_B0)
|| (this_library->pci_revision == SCU_PBG_HBA_REV_C0)
|| (this_library->pci_revision == SCU_PBG_HBA_REV_C1)
)
)
return 2;
else
return 1;
}
// ---------------------------------------------------------------------------
U32 scic_library_get_max_sge_size(
SCI_LIBRARY_HANDLE_T library
)
{
return SCU_IO_REQUEST_MAX_SGE_SIZE;
}
// ---------------------------------------------------------------------------
U32 scic_library_get_max_sge_count(
SCI_LIBRARY_HANDLE_T library
)
{
return SCU_IO_REQUEST_SGE_COUNT;
}
// ---------------------------------------------------------------------------
U32 scic_library_get_max_io_length(
SCI_LIBRARY_HANDLE_T library
)
{
return SCU_IO_REQUEST_MAX_TRANSFER_LENGTH;
}
// ---------------------------------------------------------------------------
U16 scic_library_get_min_timer_count(void)
{
return (U16) (scic_sds_controller_get_min_timer_count()
+ scic_sds_remote_device_get_min_timer_count()
+ scic_sds_request_get_min_timer_count());
}
// ---------------------------------------------------------------------------
U16 scic_library_get_max_timer_count(void)
{
return (U16) (scic_sds_controller_get_max_timer_count()
+ scic_sds_remote_device_get_max_timer_count()
+ scic_sds_request_get_max_timer_count());
}
/**
*
*/
U8 scic_sds_library_get_controller_index(
SCIC_SDS_LIBRARY_T * library,
SCIC_SDS_CONTROLLER_T * controller
)
{
U8 index;
for (index = 0; index < library->max_controller_count; index++)
{
if (controller == &library->controllers[index])
{
return index;
}
}
return 0xff;
}
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