^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Adaptec AAC series RAID controller driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * (c) Copyright 2001 Red Hat Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * based on the old aacraid driver that is..
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Adaptec aacraid device driver for Linux.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Copyright (c) 2000-2010 Adaptec, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * 2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * 2016-2017 Microsemi Corp. (aacraid@microsemi.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * Module Name:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * rkt.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * Abstract: Hardware miniport for Drawbridge specific hardware functions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/blkdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <scsi/scsi_host.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include "aacraid.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define AAC_NUM_IO_FIB_RKT (246 - AAC_NUM_MGT_FIB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * aac_rkt_select_comm - Select communications method
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * @dev: Adapter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * @comm: communications method
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static int aac_rkt_select_comm(struct aac_dev *dev, int comm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) retval = aac_rx_select_comm(dev, comm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) if (comm == AAC_COMM_MESSAGE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * FIB Setup has already been done, but we can minimize the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * damage by at least ensuring the OS never issues more
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * commands than we can handle. The Rocket adapters currently
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * can only handle 246 commands and 8 AIFs at the same time,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * and in fact do notify us accordingly if we negotiate the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * FIB size. The problem that causes us to add this check is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * to ensure that we do not overdo it with the adapter when a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * hard coded FIB override is being utilized. This special
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * case warrants this half baked, but convenient, check here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) if (dev->scsi_host_ptr->can_queue > AAC_NUM_IO_FIB_RKT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) dev->init->r7.max_io_commands =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) cpu_to_le32(AAC_NUM_IO_FIB_RKT + AAC_NUM_MGT_FIB);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) dev->scsi_host_ptr->can_queue = AAC_NUM_IO_FIB_RKT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * aac_rkt_ioremap
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * @dev: device to ioremap
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * @size: mapping resize request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static int aac_rkt_ioremap(struct aac_dev * dev, u32 size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) if (!size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) iounmap(dev->regs.rkt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) dev->base = dev->regs.rkt = ioremap(dev->base_start, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) if (dev->base == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) dev->IndexRegs = &dev->regs.rkt->IndexRegs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * aac_rkt_init - initialize an i960 based AAC card
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * @dev: device to configure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * Allocate and set up resources for the i960 based AAC variants. The
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * device_interface in the commregion will be allocated and linked
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * to the comm region.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) int aac_rkt_init(struct aac_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * Fill in the function dispatch table.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) dev->a_ops.adapter_ioremap = aac_rkt_ioremap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) dev->a_ops.adapter_comm = aac_rkt_select_comm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) return _aac_rx_init(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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