/* * Written by Julian Elischer (julian@tfs.com) * for TRW Financial Systems for use under the MACH(2.5) operating system. * * TRW Financial Systems, in accordance with their agreement with Carnegie * Mellon University, makes this software available to CMU to distribute * or use in any manner that they see fit as long as this message is kept with * the software. For this reason TFS also grants any other persons or * organisations permission to use or modify this software. * * TFS supplies this software to be publicly redistributed * on the understanding that TFS is not responsible for the correct * functioning of this software in any circumstances. * * $Id: bt5xx-445.c,v 1.8 1997/07/20 14:09:51 bde Exp $ */ /* * Bulogic/Bustek 32 bit Addressing Mode SCSI driver. * * NOTE: 1. Some bt5xx card can NOT handle 32 bit addressing mode. * 2. OLD bt445s Revision A,B,C,D(nowired) + any firmware version * has broken busmaster for handling 32 bit addressing on H/W bus * side. * * 3. Extended probing still needs confirmation from our user base, due * to several H/W and firmware dependencies. If you have a problem * with extended probing, please contact 'amurai@spec.co.jp' * * amurai@spec.co.jp 94/6/16 */ #include #include #include #include #include static int bt_isa_probe __P((struct isa_device *dev)); static int bt_isa_attach __P((struct isa_device *dev)); struct isa_driver btdriver = { bt_isa_probe, bt_isa_attach, "bt" }; /* * Check if the device can be found at the port given * and if so, set it up ready for further work * as an argument, takes the isa_device structure from * autoconf.c */ static int bt_isa_probe(dev) struct isa_device *dev; { /* * find unit and check we have that many defined */ int unit = bt_unit; struct bt_data *bt; /* * We ignore the unit number assigned by config to allow * consistant numbering between PCI/EISA/ISA devices. * This is a total kludge until we have a configuration * manager. */ dev->id_unit = bt_unit; /* * Allocate a storage area for us */ bt = bt_alloc(unit, dev->id_iobase); if (!bt) return 0; /* * Try initialise a unit at this location * sets up dma and bus speed, loads bt->bt_int */ if (bt_init(bt) != 0) { bt_free(bt); return 0; } /* * If it's there, put in it's interrupt vectors */ dev->id_unit = unit; dev->id_irq = (1 << bt->bt_int); dev->id_drq = bt->bt_dma; bt_unit++; return 1; } /* * Attach all the sub-devices we can find */ static int bt_isa_attach(dev) struct isa_device *dev; { int unit = dev->id_unit; struct bt_data *bt = btdata[unit]; return( bt_attach(bt) ); } /* * Handle an ISA interrupt. * XXX should go away as soon as ISA interrupt handlers * take a (void *) arg. */ void bt_isa_intr(unit) int unit; { struct bt_data* arg = btdata[unit]; bt_intr((void *)arg); }