From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/scsi/aacraid/rkt.c | 95 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 95 insertions(+) create mode 100644 drivers/scsi/aacraid/rkt.c (limited to 'drivers/scsi/aacraid/rkt.c') diff --git a/drivers/scsi/aacraid/rkt.c b/drivers/scsi/aacraid/rkt.c new file mode 100644 index 000000000..8ebc67e54 --- /dev/null +++ b/drivers/scsi/aacraid/rkt.c @@ -0,0 +1,95 @@ +// 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 + +#include + +#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); +} -- cgit v1.2.3