linux/drivers/scsi/aacraid/rkt.c
Lee Jones 3c4538f80b scsi: aacraid: Add missing description for 'dev'
And clean-up a couple of whitespace issues while we're here.

Fixes the following W=1 kernel build warning(s):

 drivers/scsi/aacraid/rkt.c:64: warning: Function parameter or member 'dev' not described in 'aac_rkt_ioremap'

Link: https://lore.kernel.org/r/20200721164148.2617584-5-lee.jones@linaro.org
Cc: Adaptec OEM Raid Solutions <aacraid@microsemi.com>
Cc: "PMC-Sierra, Inc" <aacraid@pmc-sierra.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-24 22:09:57 -04:00

96 lines
2.5 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* 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.
* 2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
* 2016-2017 Microsemi Corp. (aacraid@microsemi.com)
*
* 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->r7.max_io_commands =
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
* @dev: device to 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->base_start, 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);
}