mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 10:30:54 +07:00
e8b12f0fb8
Added new hardware device 0x28b interface for PMC-Sierra's SRC based
controller family.
- new src.c file for 0x28b specific functions
- new XPORT header required
- sync. command interface: doorbell bits shifted (SRC_ODR_SHIFT, SRC_IDR_SHIFT)
- async. Interface: different inbound queue handling, no outbound I2O
queue available, using doorbell ("PmDoorBellResponseSent") and
response buffer on the host ("host_rrq") for status
- changed AIF (adapter initiated FIBs) interface: "DoorBellAifPending"
bit to inform about pending AIF, "AifRequest" command to read AIF,
"NoMoreAifDataAvailable" to mark the end of the AIFs
Signed-off-by: Mahesh Rajashekhara <aacraid@pmc-sierra.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
108 lines
3.0 KiB
C
108 lines
3.0 KiB
C
/*
|
|
* Adaptec AAC series RAID controller driver
|
|
* (c) Copyright 2001 Red Hat Inc.
|
|
*
|
|
* based on the old aacraid driver that is..
|
|
* Adaptec aacraid device driver for Linux.
|
|
*
|
|
* Copyright (c) 2000-2010 Adaptec, Inc.
|
|
* 2010 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2, or (at your option)
|
|
* any later version.
|
|
*
|
|
* 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; see the file COPYING. If not, write to
|
|
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
* Module Name:
|
|
* rkt.c
|
|
*
|
|
* Abstract: Hardware miniport for Drawbridge specific hardware functions.
|
|
*
|
|
*/
|
|
|
|
#include <linux/blkdev.h>
|
|
|
|
#include <scsi/scsi_host.h>
|
|
|
|
#include "aacraid.h"
|
|
|
|
#define AAC_NUM_IO_FIB_RKT (246 - AAC_NUM_MGT_FIB)
|
|
|
|
/**
|
|
* aac_rkt_select_comm - Select communications method
|
|
* @dev: Adapter
|
|
* @comm: communications method
|
|
*/
|
|
|
|
static int aac_rkt_select_comm(struct aac_dev *dev, int comm)
|
|
{
|
|
int retval;
|
|
retval = aac_rx_select_comm(dev, comm);
|
|
if (comm == AAC_COMM_MESSAGE) {
|
|
/*
|
|
* FIB Setup has already been done, but we can minimize the
|
|
* damage by at least ensuring the OS never issues more
|
|
* commands than we can handle. The Rocket adapters currently
|
|
* can only handle 246 commands and 8 AIFs at the same time,
|
|
* and in fact do notify us accordingly if we negotiate the
|
|
* FIB size. The problem that causes us to add this check is
|
|
* to ensure that we do not overdo it with the adapter when a
|
|
* hard coded FIB override is being utilized. This special
|
|
* case warrants this half baked, but convenient, check here.
|
|
*/
|
|
if (dev->scsi_host_ptr->can_queue > AAC_NUM_IO_FIB_RKT) {
|
|
dev->init->MaxIoCommands =
|
|
cpu_to_le32(AAC_NUM_IO_FIB_RKT + AAC_NUM_MGT_FIB);
|
|
dev->scsi_host_ptr->can_queue = AAC_NUM_IO_FIB_RKT;
|
|
}
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
/**
|
|
* aac_rkt_ioremap
|
|
* @size: mapping resize request
|
|
*
|
|
*/
|
|
static int aac_rkt_ioremap(struct aac_dev * dev, u32 size)
|
|
{
|
|
if (!size) {
|
|
iounmap(dev->regs.rkt);
|
|
return 0;
|
|
}
|
|
dev->base = dev->regs.rkt = ioremap(dev->scsi_host_ptr->base, size);
|
|
if (dev->base == NULL)
|
|
return -1;
|
|
dev->IndexRegs = &dev->regs.rkt->IndexRegs;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* aac_rkt_init - initialize an i960 based AAC card
|
|
* @dev: device to configure
|
|
*
|
|
* Allocate and set up resources for the i960 based AAC variants. The
|
|
* device_interface in the commregion will be allocated and linked
|
|
* to the comm region.
|
|
*/
|
|
|
|
int aac_rkt_init(struct aac_dev *dev)
|
|
{
|
|
/*
|
|
* Fill in the function dispatch table.
|
|
*/
|
|
dev->a_ops.adapter_ioremap = aac_rkt_ioremap;
|
|
dev->a_ops.adapter_comm = aac_rkt_select_comm;
|
|
|
|
return _aac_rx_init(dev);
|
|
}
|