718cf2ccb9
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
359 lines
8.9 KiB
C
359 lines
8.9 KiB
C
/*-
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* Product specific probe and attach routines for:
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* Buslogic BT-54X and BT-445 cards
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*
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 1998, 1999 Justin T. Gibbs
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification, immediately at the beginning of the file.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <isa/isavar.h>
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#include <dev/buslogic/btreg.h>
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#include <cam/scsi/scsi_all.h>
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static bus_dma_filter_t btvlbouncefilter;
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static bus_dmamap_callback_t btmapsensebuffers;
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static int
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bt_isa_alloc_resources(device_t dev, u_long portstart, u_long portend)
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{
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int rid;
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struct resource *port;
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struct resource *irq;
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struct resource *drq;
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rid = 0;
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port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
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portstart, portend, BT_NREGS, RF_ACTIVE);
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if (!port)
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return (ENOMEM);
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if (isa_get_irq(dev) != -1) {
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rid = 0;
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irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
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if (!irq) {
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if (port)
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bus_release_resource(dev, SYS_RES_IOPORT,
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0, port);
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return (ENOMEM);
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}
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} else
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irq = NULL;
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if (isa_get_drq(dev) != -1) {
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rid = 0;
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drq = bus_alloc_resource_any(dev, SYS_RES_DRQ, &rid, RF_ACTIVE);
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if (!drq) {
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if (port)
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bus_release_resource(dev, SYS_RES_IOPORT,
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0, port);
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if (irq)
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bus_release_resource(dev, SYS_RES_IRQ,
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0, irq);
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return (ENOMEM);
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}
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} else
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drq = NULL;
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bt_init_softc(dev, port, irq, drq);
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return (0);
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}
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static void
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bt_isa_release_resources(device_t dev)
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{
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struct bt_softc *bt = device_get_softc(dev);
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if (bt->port)
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bus_release_resource(dev, SYS_RES_IOPORT, 0, bt->port);
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if (bt->irq)
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bus_release_resource(dev, SYS_RES_IRQ, 0, bt->irq);
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if (bt->drq)
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bus_release_resource(dev, SYS_RES_DRQ, 0, bt->drq);
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bt_free_softc(dev);
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}
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/*
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* Check if the device can be found at the port given
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* and if so, set it up ready for further work
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* as an argument, takes the isa_device structure from
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* autoconf.c
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*/
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static int
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bt_isa_probe(device_t dev)
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{
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/*
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* find unit and check we have that many defined
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*/
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int port_index;
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int max_port_index;
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/* No pnp support */
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if (isa_get_vendorid(dev))
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return (ENXIO);
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port_index = 0;
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max_port_index = BT_NUM_ISAPORTS - 1;
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/*
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* Bound our board search if the user has
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* specified an exact port.
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*/
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bt_find_probe_range(isa_get_port(dev), &port_index, &max_port_index);
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if (port_index < 0)
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return (ENXIO);
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/* Attempt to find an adapter */
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for (;port_index <= max_port_index; port_index++) {
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struct bt_probe_info info;
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u_int ioport;
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ioport = bt_iop_from_bio(port_index);
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/*
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* Ensure this port has not already been claimed already
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* by a PCI, ISA adapter.
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*/
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if (bt_check_probed_iop(ioport) != 0)
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continue;
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/* Initialise the softc for use during probing */
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if (bt_isa_alloc_resources(dev, ioport,
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ioport + BT_NREGS -1) != 0)
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continue;
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/* We're going to attempt to probe it now, so mark it probed */
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bt_mark_probed_bio(port_index);
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if (bt_port_probe(dev, &info) != 0) {
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if (bootverbose)
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printf("bt_isa_probe: Probe failed at 0x%x\n",
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ioport);
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bt_isa_release_resources(dev);
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continue;
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}
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bt_isa_release_resources(dev);
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bus_set_resource(dev, SYS_RES_DRQ, 0, info.drq, 1);
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bus_set_resource(dev, SYS_RES_IRQ, 0, info.irq, 1);
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return (BUS_PROBE_DEFAULT);
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}
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return (ENXIO);
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}
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/*
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* Attach all the sub-devices we can find
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*/
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static int
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bt_isa_attach(device_t dev)
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{
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struct bt_softc *bt = device_get_softc(dev);
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bus_dma_filter_t *filter;
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void *filter_arg;
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bus_addr_t lowaddr;
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int error, drq;
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/* Initialise softc */
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error = bt_isa_alloc_resources(dev, 0, ~0);
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if (error) {
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device_printf(dev, "can't allocate resources in bt_isa_attach\n");
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return error;
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}
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/* Program the DMA channel for external control */
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if ((drq = isa_get_drq(dev)) != -1)
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isa_dmacascade(drq);
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/* Allocate our parent dmatag */
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filter = NULL;
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filter_arg = NULL;
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lowaddr = BUS_SPACE_MAXADDR_24BIT;
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if (bt->model[0] == '4') {
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/*
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* This is a VL adapter. Typically, VL devices have access
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* to the full 32bit address space. On BT-445S adapters
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* prior to revision E, there is a hardware bug that causes
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* corruption of transfers to/from addresses in the range of
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* the BIOS modulo 16MB. The only properly functioning
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* BT-445S Host Adapters have firmware version 3.37.
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* If we encounter one of these adapters and the BIOS is
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* installed, install a filter function for our bus_dma_map
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* that will catch these accesses and bounce them to a safe
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* region of memory.
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*/
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if (bt->bios_addr != 0
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&& strcmp(bt->model, "445S") == 0
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&& strcmp(bt->firmware_ver, "3.37") < 0) {
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filter = btvlbouncefilter;
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filter_arg = bt;
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} else {
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lowaddr = BUS_SPACE_MAXADDR_32BIT;
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}
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}
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/* XXX Should be a child of the ISA or VL bus dma tag */
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if (bus_dma_tag_create( /* parent */ bus_get_dma_tag(dev),
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/* alignemnt */ 1,
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/* boundary */ 0,
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/* lowaddr */ lowaddr,
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/* highaddr */ BUS_SPACE_MAXADDR,
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/* filter */ filter,
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/* filterarg */ filter_arg,
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/* maxsize */ BUS_SPACE_MAXSIZE_32BIT,
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/* nsegments */ ~0,
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/* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT,
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/* flags */ 0,
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/* lockfunc */ NULL,
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/* lockarg */ NULL,
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&bt->parent_dmat) != 0) {
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bt_isa_release_resources(dev);
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return (ENOMEM);
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}
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error = bt_init(dev);
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if (error) {
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bt_isa_release_resources(dev);
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return (ENOMEM);
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}
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if (lowaddr != BUS_SPACE_MAXADDR_32BIT) {
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/* DMA tag for our sense buffers */
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if (bus_dma_tag_create(
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/* parent */ bt->parent_dmat,
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/* alignment */ 1,
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/* boundary */ 0,
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/* lowaddr */ BUS_SPACE_MAXADDR,
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/* highaddr */ BUS_SPACE_MAXADDR,
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/* filter */ NULL,
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/* filterarg */ NULL,
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/* maxsize */ bt->max_ccbs *
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sizeof(struct scsi_sense_data),
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/* nsegments */ 1,
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/* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT,
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/* flags */ 0,
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/* lockfunc */ NULL,
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/* lockarg */ NULL,
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&bt->sense_dmat) != 0) {
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bt_isa_release_resources(dev);
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return (ENOMEM);
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}
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bt->init_level++;
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/* Allocation of sense buffers */
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if (bus_dmamem_alloc(bt->sense_dmat,
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(void **)&bt->sense_buffers,
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BUS_DMA_NOWAIT, &bt->sense_dmamap) != 0) {
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bt_isa_release_resources(dev);
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return (ENOMEM);
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}
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bt->init_level++;
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/* And permanently map them */
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bus_dmamap_load(bt->sense_dmat, bt->sense_dmamap,
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bt->sense_buffers,
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bt->max_ccbs * sizeof(*bt->sense_buffers),
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btmapsensebuffers, bt, /*flags*/0);
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bt->init_level++;
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}
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error = bt_attach(dev);
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if (error) {
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bt_isa_release_resources(dev);
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return (error);
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}
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return (0);
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}
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#define BIOS_MAP_SIZE (16 * 1024)
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static int
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btvlbouncefilter(void *arg, bus_addr_t addr)
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{
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struct bt_softc *bt;
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bt = (struct bt_softc *)arg;
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addr &= BUS_SPACE_MAXADDR_24BIT;
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if (addr == 0
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|| (addr >= bt->bios_addr
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&& addr < (bt->bios_addr + BIOS_MAP_SIZE)))
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return (1);
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return (0);
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}
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static void
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btmapsensebuffers(void *arg, bus_dma_segment_t *segs, int nseg, int error)
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{
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struct bt_softc* bt;
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bt = (struct bt_softc*)arg;
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bt->sense_buffers_physbase = segs->ds_addr;
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}
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static device_method_t bt_isa_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, bt_isa_probe),
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DEVMETHOD(device_attach, bt_isa_attach),
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{ 0, 0 }
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};
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static driver_t bt_isa_driver = {
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"bt",
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bt_isa_methods,
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sizeof(struct bt_softc),
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};
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static devclass_t bt_devclass;
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DRIVER_MODULE(bt, isa, bt_isa_driver, bt_devclass, 0, 0);
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MODULE_DEPEND(bt, isa, 1, 1, 1);
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