bt_isa.c revision 45791
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 * 2945791Speter * $Id: bt_isa.c,v 1.7 1999/04/06 21:15:18 phk Exp $ 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> 4445791Speter#include <i386/isa/isa_dma.h> 4539223Sgibbs#include <dev/buslogic/btreg.h> 4639223Sgibbs 4739223Sgibbs#include <cam/scsi/scsi_all.h> 4839223Sgibbs 4939223Sgibbsstatic bus_dma_filter_t btvlbouncefilter; 5039223Sgibbsstatic bus_dmamap_callback_t btmapsensebuffers; 5139223Sgibbs 5245791Speterstatic int 5345791Speterbt_isa_alloc_resources(device_t dev) 5439223Sgibbs{ 5545791Speter int rid; 5645791Speter struct resource *port; 5745791Speter struct resource *irq; 5845791Speter struct resource *drq; 5939223Sgibbs 6045791Speter rid = 0; 6145791Speter port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 6245791Speter 0, ~0, 1, RF_ACTIVE); 6345791Speter if (!port) 6445791Speter return (ENOMEM); 6545791Speter 6645791Speter if (isa_get_irq(dev) != -1) { 6745791Speter rid = 0; 6845791Speter irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 6945791Speter 0, ~0, 1, RF_ACTIVE); 7045791Speter if (!irq) { 7145791Speter if (port) 7245791Speter bus_release_resource(dev, SYS_RES_IOPORT, 7345791Speter 0, port); 7445791Speter return (ENOMEM); 7545791Speter } 7645791Speter } else 7745791Speter irq = 0; 7845791Speter 7945791Speter if (isa_get_drq(dev) != -1) { 8045791Speter rid = 0; 8145791Speter drq = bus_alloc_resource(dev, SYS_RES_DRQ, &rid, 8245791Speter 0, ~0, 1, RF_ACTIVE); 8345791Speter if (!drq) { 8445791Speter if (port) 8545791Speter bus_release_resource(dev, SYS_RES_IOPORT, 8645791Speter 0, port); 8745791Speter if (irq) 8845791Speter bus_release_resource(dev, SYS_RES_IRQ, 8945791Speter 0, irq); 9045791Speter return (ENOMEM); 9145791Speter } 9245791Speter } else 9345791Speter drq = 0; 9445791Speter 9545791Speter bt_init_softc(dev, port, irq, drq); 9645791Speter 9745791Speter return (0); 9845791Speter} 9945791Speter 10045791Speterstatic void 10145791Speterbt_isa_release_resources(device_t dev) 10245791Speter{ 10345791Speter struct bt_softc *bt = device_get_softc(dev); 10445791Speter 10545791Speter if (bt->port) 10645791Speter bus_release_resource(dev, SYS_RES_IOPORT, 0, bt->port); 10745791Speter if (bt->irq) 10845791Speter bus_release_resource(dev, SYS_RES_IOPORT, 0, bt->irq); 10945791Speter if (bt->drq) 11045791Speter bus_release_resource(dev, SYS_RES_IOPORT, 0, bt->drq); 11145791Speter bt_free_softc(dev); 11245791Speter} 11345791Speter 11439223Sgibbs/* 11539223Sgibbs * Check if the device can be found at the port given 11639223Sgibbs * and if so, set it up ready for further work 11739223Sgibbs * as an argument, takes the isa_device structure from 11839223Sgibbs * autoconf.c 11939223Sgibbs */ 12039223Sgibbsstatic int 12145791Speterbt_isa_probe(device_t dev) 12239223Sgibbs{ 12339223Sgibbs /* 12439223Sgibbs * find unit and check we have that many defined 12539223Sgibbs */ 12639223Sgibbs int port_index; 12739223Sgibbs int max_port_index; 12839223Sgibbs 12939223Sgibbs port_index = 0; 13039223Sgibbs max_port_index = BT_NUM_ISAPORTS - 1; 13139223Sgibbs /* 13239223Sgibbs * Bound our board search if the user has 13339223Sgibbs * specified an exact port. 13439223Sgibbs */ 13545791Speter bt_find_probe_range(isa_get_port(dev), &port_index, &max_port_index); 13639223Sgibbs 13741048Sgibbs if (port_index < 0) 13845791Speter return (ENXIO); 13941048Sgibbs 14039223Sgibbs /* Attempt to find an adapter */ 14139223Sgibbs for (;port_index <= max_port_index; port_index++) { 14244579Sgibbs struct bt_probe_info info; 14339223Sgibbs u_int ioport; 14439223Sgibbs 14541048Sgibbs ioport = bt_iop_from_bio(port_index); 14645791Speter isa_set_port(dev, ioport); 14745791Speter isa_set_portsize(dev, BT_NREGS); 14839223Sgibbs 14939223Sgibbs /* 15039223Sgibbs * Ensure this port has not already been claimed already 15140265Simp * by a PCI, EISA or ISA adapter. 15239223Sgibbs */ 15339223Sgibbs if (bt_check_probed_iop(ioport) != 0) 15439223Sgibbs continue; 15545791Speter 15645791Speter /* Initialise the softc for use during probing */ 15745791Speter if (bt_isa_alloc_resources(dev) != 0) 15840160Simp continue; 15940160Simp 16039223Sgibbs /* We're going to attempt to probe it now, so mark it probed */ 16139223Sgibbs bt_mark_probed_bio(port_index); 16239223Sgibbs 16345791Speter if (bt_port_probe(dev, &info) != 0) { 16445390Sphk printf("bt_isa_probe: Probe failed for card at 0x%x\n", 16539223Sgibbs ioport); 16645791Speter bt_isa_release_resources(dev); 16739223Sgibbs continue; 16839223Sgibbs } 16939223Sgibbs 17045791Speter bt_isa_release_resources(dev); 17140160Simp 17245791Speter isa_set_drq(dev, info.drq); 17345791Speter isa_set_irq(dev, info.irq); 17445791Speter 17545791Speter return (0); 17639223Sgibbs } 17739223Sgibbs 17845791Speter return (ENXIO); 17939223Sgibbs} 18039223Sgibbs 18139223Sgibbs/* 18239223Sgibbs * Attach all the sub-devices we can find 18339223Sgibbs */ 18439223Sgibbsstatic int 18545791Speterbt_isa_attach(device_t dev) 18639223Sgibbs{ 18745791Speter struct bt_softc *bt = device_get_softc(dev); 18839223Sgibbs bus_dma_filter_t *filter; 18939223Sgibbs void *filter_arg; 19039223Sgibbs bus_addr_t lowaddr; 19145791Speter int error; 19239223Sgibbs 19345791Speter /* Initialise softc */ 19445791Speter error = bt_isa_alloc_resources(dev); 19545791Speter if (error) { 19645791Speter device_printf(dev, "can't allocate resources in bt_isa_attach\n"); 19745791Speter return error; 19845791Speter } 19939223Sgibbs 20039223Sgibbs /* Allocate our parent dmatag */ 20139223Sgibbs filter = NULL; 20239223Sgibbs filter_arg = NULL; 20339223Sgibbs lowaddr = BUS_SPACE_MAXADDR_24BIT; 20439223Sgibbs if (bt->model[0] == '4') { 20539223Sgibbs /* 20639223Sgibbs * This is a VL adapter. Typically, VL devices have access 20739223Sgibbs * to the full 32bit address space. On BT-445S adapters 20839223Sgibbs * prior to revision E, there is a hardware bug that causes 20939223Sgibbs * corruption of transfers to/from addresses in the range of 21039223Sgibbs * the BIOS modulo 16MB. The only properly functioning 21139223Sgibbs * BT-445S Host Adapters have firmware version 3.37. 21239223Sgibbs * If we encounter one of these adapters and the BIOS is 21339223Sgibbs * installed, install a filter function for our bus_dma_map 21439223Sgibbs * that will catch these accesses and bounce them to a safe 21539223Sgibbs * region of memory. 21639223Sgibbs */ 21739223Sgibbs if (bt->bios_addr != 0 21839223Sgibbs && strcmp(bt->model, "445S") == 0 21939223Sgibbs && strcmp(bt->firmware_ver, "3.37") < 0) { 22039223Sgibbs filter = btvlbouncefilter; 22139223Sgibbs filter_arg = bt; 22239223Sgibbs } else { 22339223Sgibbs lowaddr = BUS_SPACE_MAXADDR_32BIT; 22439223Sgibbs } 22539223Sgibbs } 22639223Sgibbs 22739223Sgibbs /* XXX Should be a child of the ISA or VL bus dma tag */ 22839223Sgibbs if (bus_dma_tag_create(/*parent*/NULL, /*alignemnt*/0, /*boundary*/0, 22939223Sgibbs lowaddr, /*highaddr*/BUS_SPACE_MAXADDR, 23039223Sgibbs filter, filter_arg, 23139223Sgibbs /*maxsize*/BUS_SPACE_MAXSIZE_32BIT, 23239223Sgibbs /*nsegments*/BUS_SPACE_UNRESTRICTED, 23339223Sgibbs /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, 23439223Sgibbs /*flags*/0, &bt->parent_dmat) != 0) { 23545791Speter bt_isa_release_resources(dev); 23645791Speter return (ENOMEM); 23739223Sgibbs } 23839223Sgibbs 23945791Speter if (bt_init(dev)) { 24045791Speter bt_isa_release_resources(dev); 24145791Speter return (ENOMEM); 24239223Sgibbs } 24339223Sgibbs 24439223Sgibbs if (lowaddr != BUS_SPACE_MAXADDR_32BIT) { 24539223Sgibbs /* DMA tag for our sense buffers */ 24639223Sgibbs if (bus_dma_tag_create(bt->parent_dmat, /*alignment*/0, 24739223Sgibbs /*boundary*/0, 24839223Sgibbs /*lowaddr*/BUS_SPACE_MAXADDR, 24939223Sgibbs /*highaddr*/BUS_SPACE_MAXADDR, 25039223Sgibbs /*filter*/NULL, /*filterarg*/NULL, 25139223Sgibbs bt->max_ccbs 25239223Sgibbs * sizeof(struct scsi_sense_data), 25339223Sgibbs /*nsegments*/1, 25439223Sgibbs /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, 25539223Sgibbs /*flags*/0, &bt->sense_dmat) != 0) { 25645791Speter bt_isa_release_resources(dev); 25745791Speter return (ENOMEM); 25839223Sgibbs } 25939223Sgibbs 26039223Sgibbs bt->init_level++; 26139223Sgibbs 26239223Sgibbs /* Allocation of sense buffers */ 26339223Sgibbs if (bus_dmamem_alloc(bt->sense_dmat, 26439223Sgibbs (void **)&bt->sense_buffers, 26539223Sgibbs BUS_DMA_NOWAIT, &bt->sense_dmamap) != 0) { 26645791Speter bt_isa_release_resources(dev); 26745791Speter return (ENOMEM); 26839223Sgibbs } 26939223Sgibbs 27039223Sgibbs bt->init_level++; 27139223Sgibbs 27239223Sgibbs /* And permanently map them */ 27339223Sgibbs bus_dmamap_load(bt->sense_dmat, bt->sense_dmamap, 27439223Sgibbs bt->sense_buffers, 27539223Sgibbs bt->max_ccbs * sizeof(*bt->sense_buffers), 27639223Sgibbs btmapsensebuffers, bt, /*flags*/0); 27739223Sgibbs 27839223Sgibbs bt->init_level++; 27939223Sgibbs } 28039223Sgibbs 28145791Speter error = bt_attach(dev); 28245791Speter if (error) { 28345791Speter bt_isa_release_resources(dev); 28445791Speter return (error); 28545791Speter } 28639223Sgibbs 28745791Speter return (0); 28839223Sgibbs} 28939223Sgibbs 29039223Sgibbs#define BIOS_MAP_SIZE (16 * 1024) 29139223Sgibbs 29239223Sgibbsstatic int 29339223Sgibbsbtvlbouncefilter(void *arg, bus_addr_t addr) 29439223Sgibbs{ 29539223Sgibbs struct bt_softc *bt; 29639223Sgibbs 29739223Sgibbs bt = (struct bt_softc *)arg; 29839223Sgibbs 29939223Sgibbs addr &= BUS_SPACE_MAXADDR_24BIT; 30039223Sgibbs 30139223Sgibbs if (addr == 0 30239223Sgibbs || (addr >= bt->bios_addr 30339223Sgibbs && addr < (bt->bios_addr + BIOS_MAP_SIZE))) 30439223Sgibbs return (1); 30539223Sgibbs return (0); 30639223Sgibbs} 30739223Sgibbs 30839223Sgibbsstatic void 30939223Sgibbsbtmapsensebuffers(void *arg, bus_dma_segment_t *segs, int nseg, int error) 31039223Sgibbs{ 31139223Sgibbs struct bt_softc* bt; 31239223Sgibbs 31339223Sgibbs bt = (struct bt_softc*)arg; 31439223Sgibbs bt->sense_buffers_physbase = segs->ds_addr; 31539223Sgibbs} 31645791Speter 31745791Speterstatic device_method_t bt_isa_methods[] = { 31845791Speter /* Device interface */ 31945791Speter DEVMETHOD(device_probe, bt_isa_probe), 32045791Speter DEVMETHOD(device_attach, bt_isa_attach), 32145791Speter 32245791Speter { 0, 0 } 32345791Speter}; 32445791Speter 32545791Speterstatic driver_t bt_isa_driver = { 32645791Speter "bt", 32745791Speter bt_isa_methods, 32845791Speter DRIVER_TYPE_CAM, 32945791Speter sizeof(struct bt_softc), 33045791Speter}; 33145791Speter 33245791Speterstatic devclass_t bt_devclass; 33345791Speter 33445791SpeterDRIVER_MODULE(bt, isa, bt_isa_driver, bt_devclass, 0, 0); 335