// 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);
}
Messung V0.5 in Prozent C=94 H=100 G=96
¤ Dauer der Verarbeitung: 0.17 Sekunden
(vorverarbeitet am 2026-09-29)
¤
*© Formatika GbR, Deutschland