bt_isa.c revision 112782
139223Sgibbs/* 239223Sgibbs * Product specific probe and attach routines for: 339223Sgibbs * Buslogic BT-54X and BT-445 cards 439223Sgibbs * 544579Sgibbs * Copyright (c) 1998, 1999 Justin T. Gibbs 639223Sgibbs * All rights reserved. 739223Sgibbs * 839223Sgibbs * Redistribution and use in source and binary forms, with or without 939223Sgibbs * modification, are permitted provided that the following conditions 1039223Sgibbs * are met: 1139223Sgibbs * 1. Redistributions of source code must retain the above copyright 1239223Sgibbs * notice, this list of conditions, and the following disclaimer, 1339223Sgibbs * without modification, immediately at the beginning of the file. 1439223Sgibbs * 2. The name of the author may not be used to endorse or promote products 1539223Sgibbs * derived from this software without specific prior written permission. 1639223Sgibbs * 1739223Sgibbs * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1839223Sgibbs * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1939223Sgibbs * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2039223Sgibbs * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 2139223Sgibbs * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2239223Sgibbs * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2339223Sgibbs * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2439223Sgibbs * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2539223Sgibbs * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2639223Sgibbs * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2739223Sgibbs * SUCH DAMAGE. 2839223Sgibbs * 2950477Speter * $FreeBSD: head/sys/dev/buslogic/bt_isa.c 112782 2003-03-29 09:46:10Z mdodd $ 3039223Sgibbs */ 3139223Sgibbs 3239223Sgibbs#include <sys/param.h> 3339223Sgibbs#include <sys/systm.h> 3445791Speter#include <sys/kernel.h> 3545791Speter#include <sys/module.h> 3645791Speter#include <sys/bus.h> 3739223Sgibbs 3839223Sgibbs#include <machine/bus_pio.h> 3939223Sgibbs#include <machine/bus.h> 4045791Speter#include <machine/resource.h> 4145791Speter#include <sys/rman.h> 4239223Sgibbs 4345791Speter#include <isa/isavar.h> 4439223Sgibbs#include <dev/buslogic/btreg.h> 4539223Sgibbs 4639223Sgibbs#include <cam/scsi/scsi_all.h> 4739223Sgibbs 4839223Sgibbsstatic bus_dma_filter_t btvlbouncefilter; 4939223Sgibbsstatic bus_dmamap_callback_t btmapsensebuffers; 5039223Sgibbs 5145791Speterstatic int 5247399Sdfrbt_isa_alloc_resources(device_t dev, u_long portstart, u_long portend) 5339223Sgibbs{ 5445791Speter int rid; 5545791Speter struct resource *port; 5645791Speter struct resource *irq; 5745791Speter struct resource *drq; 5839223Sgibbs 5945791Speter rid = 0; 6045791Speter port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 6147399Sdfr portstart, portend, BT_NREGS, RF_ACTIVE); 6245791Speter if (!port) 6345791Speter return (ENOMEM); 6445791Speter 6545791Speter if (isa_get_irq(dev) != -1) { 6645791Speter rid = 0; 6745791Speter irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 6845791Speter 0, ~0, 1, RF_ACTIVE); 6945791Speter if (!irq) { 7045791Speter if (port) 7145791Speter bus_release_resource(dev, SYS_RES_IOPORT, 7245791Speter 0, port); 7345791Speter return (ENOMEM); 7445791Speter } 7545791Speter } else 7645791Speter irq = 0; 7745791Speter 7845791Speter if (isa_get_drq(dev) != -1) { 7945791Speter rid = 0; 8045791Speter drq = bus_alloc_resource(dev, SYS_RES_DRQ, &rid, 8145791Speter 0, ~0, 1, RF_ACTIVE); 8245791Speter if (!drq) { 8345791Speter if (port) 8445791Speter bus_release_resource(dev, SYS_RES_IOPORT, 8545791Speter 0, port); 8645791Speter if (irq) 8745791Speter bus_release_resource(dev, SYS_RES_IRQ, 8845791Speter 0, irq); 8945791Speter return (ENOMEM); 9045791Speter } 9145791Speter } else 9245791Speter drq = 0; 9345791Speter 9445791Speter bt_init_softc(dev, port, irq, drq); 9545791Speter 9645791Speter return (0); 9745791Speter} 9845791Speter 9945791Speterstatic void 10045791Speterbt_isa_release_resources(device_t dev) 10145791Speter{ 10245791Speter struct bt_softc *bt = device_get_softc(dev); 10345791Speter 10445791Speter if (bt->port) 10545791Speter bus_release_resource(dev, SYS_RES_IOPORT, 0, bt->port); 10645791Speter if (bt->irq) 10745796Speter bus_release_resource(dev, SYS_RES_IRQ, 0, bt->irq); 10845791Speter if (bt->drq) 10945796Speter bus_release_resource(dev, SYS_RES_DRQ, 0, bt->drq); 11045791Speter bt_free_softc(dev); 11145791Speter} 11245791Speter 11339223Sgibbs/* 11439223Sgibbs * Check if the device can be found at the port given 11539223Sgibbs * and if so, set it up ready for further work 11639223Sgibbs * as an argument, takes the isa_device structure from 11739223Sgibbs * autoconf.c 11839223Sgibbs */ 11939223Sgibbsstatic int 12045791Speterbt_isa_probe(device_t dev) 12139223Sgibbs{ 12239223Sgibbs /* 12339223Sgibbs * find unit and check we have that many defined 12439223Sgibbs */ 12539223Sgibbs int port_index; 12639223Sgibbs int max_port_index; 12739223Sgibbs 12847617Sdfr /* No pnp support */ 12947617Sdfr if (isa_get_vendorid(dev)) 13047617Sdfr return (ENXIO); 13147617Sdfr 13239223Sgibbs port_index = 0; 13339223Sgibbs max_port_index = BT_NUM_ISAPORTS - 1; 13439223Sgibbs /* 13539223Sgibbs * Bound our board search if the user has 13639223Sgibbs * specified an exact port. 13739223Sgibbs */ 13845791Speter bt_find_probe_range(isa_get_port(dev), &port_index, &max_port_index); 13939223Sgibbs 14041048Sgibbs if (port_index < 0) 14145791Speter return (ENXIO); 14241048Sgibbs 14339223Sgibbs /* Attempt to find an adapter */ 14439223Sgibbs for (;port_index <= max_port_index; port_index++) { 14544579Sgibbs struct bt_probe_info info; 14639223Sgibbs u_int ioport; 14739223Sgibbs 14841048Sgibbs ioport = bt_iop_from_bio(port_index); 14939223Sgibbs 15039223Sgibbs /* 15139223Sgibbs * Ensure this port has not already been claimed already 15240265Simp * by a PCI, EISA or ISA adapter. 15339223Sgibbs */ 15439223Sgibbs if (bt_check_probed_iop(ioport) != 0) 15539223Sgibbs continue; 15645791Speter 15745791Speter /* Initialise the softc for use during probing */ 15847399Sdfr if (bt_isa_alloc_resources(dev, ioport, 15947399Sdfr ioport + BT_NREGS -1) != 0) 16040160Simp continue; 16140160Simp 16239223Sgibbs /* We're going to attempt to probe it now, so mark it probed */ 16339223Sgibbs bt_mark_probed_bio(port_index); 16439223Sgibbs 16545791Speter if (bt_port_probe(dev, &info) != 0) { 16647717Speter if (bootverbose) 16747717Speter printf("bt_isa_probe: Probe failed at 0x%x\n", 16847717Speter ioport); 16945791Speter bt_isa_release_resources(dev); 17039223Sgibbs continue; 17139223Sgibbs } 17239223Sgibbs 17345791Speter bt_isa_release_resources(dev); 17440160Simp 17552174Sdfr bus_set_resource(dev, SYS_RES_DRQ, 0, info.drq, 1); 17652174Sdfr bus_set_resource(dev, SYS_RES_IRQ, 0, info.irq, 1); 17745791Speter 17845791Speter return (0); 17939223Sgibbs } 18039223Sgibbs 18145791Speter return (ENXIO); 18239223Sgibbs} 18339223Sgibbs 18439223Sgibbs/* 18539223Sgibbs * Attach all the sub-devices we can find 18639223Sgibbs */ 18739223Sgibbsstatic int 18845791Speterbt_isa_attach(device_t dev) 18939223Sgibbs{ 19045791Speter struct bt_softc *bt = device_get_softc(dev); 19139223Sgibbs bus_dma_filter_t *filter; 19239223Sgibbs void *filter_arg; 19339223Sgibbs bus_addr_t lowaddr; 19445796Speter int error, drq; 19539223Sgibbs 19645791Speter /* Initialise softc */ 19747399Sdfr error = bt_isa_alloc_resources(dev, 0, ~0); 19845791Speter if (error) { 19945791Speter device_printf(dev, "can't allocate resources in bt_isa_attach\n"); 20045791Speter return error; 20145791Speter } 20239223Sgibbs 20345796Speter /* Program the DMA channel for external control */ 20445796Speter if ((drq = isa_get_drq(dev)) != -1) 20545796Speter isa_dmacascade(drq); 20645796Speter 20739223Sgibbs /* Allocate our parent dmatag */ 20839223Sgibbs filter = NULL; 20939223Sgibbs filter_arg = NULL; 21039223Sgibbs lowaddr = BUS_SPACE_MAXADDR_24BIT; 21139223Sgibbs if (bt->model[0] == '4') { 21239223Sgibbs /* 21339223Sgibbs * This is a VL adapter. Typically, VL devices have access 21439223Sgibbs * to the full 32bit address space. On BT-445S adapters 21539223Sgibbs * prior to revision E, there is a hardware bug that causes 21639223Sgibbs * corruption of transfers to/from addresses in the range of 21739223Sgibbs * the BIOS modulo 16MB. The only properly functioning 21839223Sgibbs * BT-445S Host Adapters have firmware version 3.37. 21939223Sgibbs * If we encounter one of these adapters and the BIOS is 22039223Sgibbs * installed, install a filter function for our bus_dma_map 22139223Sgibbs * that will catch these accesses and bounce them to a safe 22239223Sgibbs * region of memory. 22339223Sgibbs */ 22439223Sgibbs if (bt->bios_addr != 0 22539223Sgibbs && strcmp(bt->model, "445S") == 0 22639223Sgibbs && strcmp(bt->firmware_ver, "3.37") < 0) { 22739223Sgibbs filter = btvlbouncefilter; 22839223Sgibbs filter_arg = bt; 22939223Sgibbs } else { 23039223Sgibbs lowaddr = BUS_SPACE_MAXADDR_32BIT; 23139223Sgibbs } 23239223Sgibbs } 23339223Sgibbs 23439223Sgibbs /* XXX Should be a child of the ISA or VL bus dma tag */ 235112782Smdodd if (bus_dma_tag_create( /* parent */ NULL, 236112782Smdodd /* alignemnt */ 1, 237112782Smdodd /* boundary */ 0, 238112782Smdodd /* lowaddr */ lowaddr, 239112782Smdodd /* highaddr */ BUS_SPACE_MAXADDR, 240112782Smdodd /* filter */ filter, 241112782Smdodd /* filterarg */ filter_arg, 242112782Smdodd /* maxsize */ BUS_SPACE_MAXSIZE_32BIT, 243112782Smdodd /* nsegments */ ~0, 244112782Smdodd /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT, 245112782Smdodd /* flags */ 0, 246112782Smdodd &bt->parent_dmat) != 0) { 24745791Speter bt_isa_release_resources(dev); 24845791Speter return (ENOMEM); 24939223Sgibbs } 25039223Sgibbs 25145796Speter error = bt_init(dev); 25245796Speter if (error) { 25345791Speter bt_isa_release_resources(dev); 25445791Speter return (ENOMEM); 25539223Sgibbs } 25639223Sgibbs 25739223Sgibbs if (lowaddr != BUS_SPACE_MAXADDR_32BIT) { 25839223Sgibbs /* DMA tag for our sense buffers */ 259112782Smdodd if (bus_dma_tag_create( 260112782Smdodd /* parent */ bt->parent_dmat, 261112782Smdodd /* alignment */ 1, 262112782Smdodd /* boundary */ 0, 263112782Smdodd /* lowaddr */ BUS_SPACE_MAXADDR, 264112782Smdodd /* highaddr */ BUS_SPACE_MAXADDR, 265112782Smdodd /* filter */ NULL, 266112782Smdodd /* filterarg */ NULL, 267112782Smdodd /* maxsize */ bt->max_ccbs * 268112782Smdodd sizeof(struct scsi_sense_data), 269112782Smdodd /* nsegments */ 1, 270112782Smdodd /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT, 271112782Smdodd /* flags */ 0, 272112782Smdodd &bt->sense_dmat) != 0) { 27345791Speter bt_isa_release_resources(dev); 27445791Speter return (ENOMEM); 27539223Sgibbs } 27639223Sgibbs 27739223Sgibbs bt->init_level++; 27839223Sgibbs 27939223Sgibbs /* Allocation of sense buffers */ 28039223Sgibbs if (bus_dmamem_alloc(bt->sense_dmat, 28139223Sgibbs (void **)&bt->sense_buffers, 28239223Sgibbs BUS_DMA_NOWAIT, &bt->sense_dmamap) != 0) { 28345791Speter bt_isa_release_resources(dev); 28445791Speter return (ENOMEM); 28539223Sgibbs } 28639223Sgibbs 28739223Sgibbs bt->init_level++; 28839223Sgibbs 28939223Sgibbs /* And permanently map them */ 29039223Sgibbs bus_dmamap_load(bt->sense_dmat, bt->sense_dmamap, 29139223Sgibbs bt->sense_buffers, 29239223Sgibbs bt->max_ccbs * sizeof(*bt->sense_buffers), 29339223Sgibbs btmapsensebuffers, bt, /*flags*/0); 29439223Sgibbs 29539223Sgibbs bt->init_level++; 29639223Sgibbs } 29739223Sgibbs 29845791Speter error = bt_attach(dev); 29945791Speter if (error) { 30045791Speter bt_isa_release_resources(dev); 30145791Speter return (error); 30245791Speter } 30339223Sgibbs 30445791Speter return (0); 30539223Sgibbs} 30639223Sgibbs 30739223Sgibbs#define BIOS_MAP_SIZE (16 * 1024) 30839223Sgibbs 30939223Sgibbsstatic int 31039223Sgibbsbtvlbouncefilter(void *arg, bus_addr_t addr) 31139223Sgibbs{ 31239223Sgibbs struct bt_softc *bt; 31339223Sgibbs 31439223Sgibbs bt = (struct bt_softc *)arg; 31539223Sgibbs 31639223Sgibbs addr &= BUS_SPACE_MAXADDR_24BIT; 31739223Sgibbs 31839223Sgibbs if (addr == 0 31939223Sgibbs || (addr >= bt->bios_addr 32039223Sgibbs && addr < (bt->bios_addr + BIOS_MAP_SIZE))) 32139223Sgibbs return (1); 32239223Sgibbs return (0); 32339223Sgibbs} 32439223Sgibbs 32539223Sgibbsstatic void 32639223Sgibbsbtmapsensebuffers(void *arg, bus_dma_segment_t *segs, int nseg, int error) 32739223Sgibbs{ 32839223Sgibbs struct bt_softc* bt; 32939223Sgibbs 33039223Sgibbs bt = (struct bt_softc*)arg; 33139223Sgibbs bt->sense_buffers_physbase = segs->ds_addr; 33239223Sgibbs} 33345791Speter 33445791Speterstatic device_method_t bt_isa_methods[] = { 33545791Speter /* Device interface */ 33645791Speter DEVMETHOD(device_probe, bt_isa_probe), 33745791Speter DEVMETHOD(device_attach, bt_isa_attach), 33845791Speter 33945791Speter { 0, 0 } 34045791Speter}; 34145791Speter 34245791Speterstatic driver_t bt_isa_driver = { 34345791Speter "bt", 34445791Speter bt_isa_methods, 34545791Speter sizeof(struct bt_softc), 34645791Speter}; 34745791Speter 34845791Speterstatic devclass_t bt_devclass; 34945791Speter 35045791SpeterDRIVER_MODULE(bt, isa, bt_isa_driver, bt_devclass, 0, 0); 351