2 * Adaptec AAC series RAID controller driver
3 * (c) Copyright 2001 Red Hat Inc. <alan@redhat.com>
5 * based on the old aacraid driver that is..
6 * Adaptec aacraid device driver for Linux.
8 * Copyright (c) 2000 Adaptec, Inc. (aacraid@adaptec.com)
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2, or (at your option)
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; see the file COPYING. If not, write to
22 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
27 * Abstract: Hardware miniport for Drawbridge specific hardware functions.
31 #include <linux/blkdev.h>
33 #include <scsi/scsi_host.h>
39 * @size: mapping resize request
42 static int aac_rkt_ioremap(struct aac_dev * dev, u32 size)
45 iounmap(dev->regs.rkt);
48 dev->base = dev->regs.rkt = ioremap(dev->scsi_host_ptr->base, size);
49 if (dev->base == NULL)
51 dev->IndexRegs = &dev->regs.rkt->IndexRegs;
56 * aac_rkt_init - initialize an i960 based AAC card
57 * @dev: device to configure
59 * Allocate and set up resources for the i960 based AAC variants. The
60 * device_interface in the commregion will be allocated and linked
64 int aac_rkt_init(struct aac_dev *dev)
67 extern int _aac_rx_init(struct aac_dev *dev);
68 extern void aac_rx_start_adapter(struct aac_dev *dev);
71 * Fill in the function dispatch table.
73 dev->a_ops.adapter_ioremap = aac_rkt_ioremap;
75 retval = _aac_rx_init(dev);
78 if (dev->new_comm_interface) {
80 * FIB Setup has already been done, but we can minimize the
81 * damage by at least ensuring the OS never issues more
82 * commands than we can handle. The Rocket adapters currently
83 * can only handle 246 commands and 8 AIFs at the same time,
84 * and in fact do notify us accordingly if we negotiate the
85 * FIB size. The problem that causes us to add this check is
86 * to ensure that we do not overdo it with the adapter when a
87 * hard coded FIB override is being utilized. This special
88 * case warrants this half baked, but convenient, check here.
90 if (dev->scsi_host_ptr->can_queue > (246 - AAC_NUM_MGT_FIB)) {
91 dev->init->MaxIoCommands = cpu_to_le32(246);
92 dev->scsi_host_ptr->can_queue = 246 - AAC_NUM_MGT_FIB;
96 * Tell the adapter that all is configured, and it can start
99 aac_rx_start_adapter(dev);