/*- * Copyright (c) 1995 - 2001 John Hay. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the author nor the names of any co-contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY John Hay ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL John Hay BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD: src/sys/dev/ar/if_ar_isa.c,v 1.54 2005/01/06 01:42:28 imp Exp $ * $DragonFly: src/sys/dev/netif/ar/if_ar_isa.c,v 1.6 2006/12/22 23:26:18 swildner Exp $ */ /* * Programming assumptions and other issues. * * The descriptors of a DMA channel will fit in a 16K memory window. * * The buffers of a transmit DMA channel will fit in a 16K memory window. * * Only the ISA bus cards with X.21 and V.35 is tested. * * When interface is going up, handshaking is set and it is only cleared * when the interface is down'ed. * * There should be a way to set/reset Raw HDLC/PPP, Loopback, DCE/DTE, * internal/external clock, etc..... */ #include #include #include #include #include #include #include #include "isa_if.h" #include #include #ifdef TRACE #define TRC(x) x #else #define TRC(x) #endif #define TRCL(x) x static int ar_isa_probe (device_t); static int ar_isa_attach (device_t); static struct isa_pnp_id ar_ids[] = { {0, NULL} }; static device_method_t ar_methods[] = { DEVMETHOD(device_probe, ar_isa_probe), DEVMETHOD(device_attach, ar_isa_attach), DEVMETHOD(device_detach, ar_detach), { 0, 0 } }; static driver_t ar_isa_driver = { "ar", ar_methods, sizeof (struct ar_hardc) }; DRIVER_MODULE(if_ar, isa, ar_isa_driver, ar_devclass, 0, 0); /* * Probe to see if it is there. * Get its information and fill it in. */ static int ar_isa_probe(device_t device) { int error; u_long membase, memsize; struct ar_hardc *hc; error = ISA_PNP_PROBE(device_get_parent(device), device, ar_ids); if(error == ENXIO || error == 0) return (error); hc = (struct ar_hardc *)device_get_softc(device); if((error = ar_allocate_ioport(device, 0, ARC_IO_SIZ))) { return (ENXIO); } /* * Now see if the card is realy there. * * XXX For now I just check the undocumented ports * for "570". We will probably have to do more checking. */ if((ar_inb(hc, AR_ID_5) != '5') || (ar_inb(hc, AR_ID_7) != '7') || (ar_inb(hc, AR_ID_0) != '0')) { ar_deallocate_resources(device); return (ENXIO); } membase = bus_get_resource_start(device, SYS_RES_MEMORY, 0); memsize = ar_inb(hc, AR_REV); memsize = 1 << ((memsize & AR_WSIZ_MSK) >> AR_WSIZ_SHFT); memsize *= ARC_WIN_SIZ; error = bus_set_resource(device, SYS_RES_MEMORY, 0, membase, memsize); ar_deallocate_resources(device); return (error); } /* * Malloc memory for the softc structures. * Reset the card to put it in a known state. * Register the ports on the adapter. * Fill in the info for each port. * Attach each port to sppp and bpf. */ static int ar_isa_attach(device_t device) { u_int tmp; u_long irq, junk; struct ar_hardc *hc; hc = (struct ar_hardc *)device_get_softc(device); if(ar_allocate_ioport(device, 0, ARC_IO_SIZ)) return (ENXIO); tmp = ar_inb(hc, AR_BMI); hc->bustype = tmp & AR_BUS_MSK; hc->memsize = (tmp & AR_MEM_MSK) >> AR_MEM_SHFT; hc->memsize = 1 << hc->memsize; hc->memsize <<= 16; hc->interface[0] = (tmp & AR_IFACE_MSK); hc->interface[1] = hc->interface[0]; hc->interface[2] = hc->interface[0]; hc->interface[3] = hc->interface[0]; tmp = ar_inb(hc, AR_REV); hc->revision = tmp & AR_REV_MSK; hc->winsize = 1 << ((tmp & AR_WSIZ_MSK) >> AR_WSIZ_SHFT); hc->winsize *= ARC_WIN_SIZ; hc->winmsk = hc->winsize - 1; hc->numports = ar_inb(hc, AR_PNUM); hc->handshake = ar_inb(hc, AR_HNDSH); if(ar_allocate_memory(device, 0, hc->winsize)) return (ENXIO); hc->mem_start = rman_get_virtual(hc->res_memory); hc->mem_end = hc->mem_start + hc->winsize; hc->cunit = device_get_unit(device); switch(hc->interface[0]) { case AR_IFACE_EIA_232: kprintf("ar%d: The EIA 232 interface is not supported.\n", hc->cunit); ar_deallocate_resources(device); return (ENXIO); case AR_IFACE_V_35: break; case AR_IFACE_EIA_530: kprintf("ar%d: WARNING: The EIA 530 interface is untested.\n", hc->cunit); break; case AR_IFACE_X_21: break; case AR_IFACE_COMBO: kprintf("ar%d: WARNING: The COMBO interface is untested.\n", hc->cunit); break; } /* * Do a little sanity check. */ if((hc->numports > NPORT) || (hc->memsize > (512*1024))) { ar_deallocate_resources(device); return (ENXIO); } if(ar_allocate_irq(device, 0, 1)) return (ENXIO); if(bus_get_resource(device, SYS_RES_IRQ, 0, &irq, &junk)) { ar_deallocate_resources(device); return (ENXIO); } hc->isa_irq = irq; if(ar_attach(device)) { ar_deallocate_resources(device); return (ENXIO); } return (0); } /* ********************************* END ************************************ */