/* $NetBSD: pci_eb66.c,v 1.5 1999/02/12 06:25:13 thorpej Exp $ */ /*- * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, * NASA Ames Research Center. * * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 THE FOUNDATION OR CONTRIBUTORS * 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. */ /* * Copyright (c) 1995, 1996 Carnegie-Mellon University. * All rights reserved. * * Author: Chris G. Demetriou * * Permission to use, copy, modify and distribute this software and * its documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. */ #include /* RCS ID & Copyright macro defns */ __KERNEL_RCSID(0, "$NetBSD: pci_eb66.c,v 1.5 1999/02/12 06:25:13 thorpej Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "sio.h" #if NSIO #include #endif int dec_eb66_intr_map __P((void *, pcitag_t, int, int, pci_intr_handle_t *)); const char *dec_eb66_intr_string __P((void *, pci_intr_handle_t)); void *dec_eb66_intr_establish __P((void *, pci_intr_handle_t, int, int (*func)(void *), void *)); void dec_eb66_intr_disestablish __P((void *, void *)); #define EB66_MAX_IRQ 32 #define PCI_STRAY_MAX 5 struct alpha_shared_intr *eb66_pci_intr; bus_space_tag_t eb66_intrgate_iot; bus_space_handle_t eb66_intrgate_ioh; void eb66_iointr __P((void *framep, unsigned long vec)); extern void eb66_intr_enable __P((int irq)); /* pci_eb66_intr.S */ extern void eb66_intr_disable __P((int irq)); /* pci_eb66_intr.S */ void pci_eb66_pickintr(lcp) struct lca_config *lcp; { bus_space_tag_t iot = &lcp->lc_iot; pci_chipset_tag_t pc = &lcp->lc_pc; int i; pc->pc_intr_v = lcp; pc->pc_intr_map = dec_eb66_intr_map; pc->pc_intr_string = dec_eb66_intr_string; pc->pc_intr_establish = dec_eb66_intr_establish; pc->pc_intr_disestablish = dec_eb66_intr_disestablish; /* Not supported on the EB66. */ pc->pc_pciide_compat_intr_establish = NULL; eb66_intrgate_iot = iot; if (bus_space_map(eb66_intrgate_iot, 0x804, 3, 0, &eb66_intrgate_ioh) != 0) panic("pci_eb66_pickintr: couldn't map interrupt PLD"); for (i = 0; i < EB66_MAX_IRQ; i++) eb66_intr_disable(i); eb66_pci_intr = alpha_shared_intr_alloc(EB66_MAX_IRQ); for (i = 0; i < EB66_MAX_IRQ; i++) alpha_shared_intr_set_maxstrays(eb66_pci_intr, i, PCI_STRAY_MAX); #if NSIO sio_intr_setup(pc, iot); #endif set_iointr(eb66_iointr); } int dec_eb66_intr_map(lcv, bustag, buspin, line, ihp) void *lcv; pcitag_t bustag; int buspin, line; pci_intr_handle_t *ihp; { struct lca_config *lcp = lcv; pci_chipset_tag_t pc = &lcp->lc_pc; int bus, device, function; if (buspin == 0) { /* No IRQ used. */ return 1; } if (buspin > 4) { printf("dec_eb66_intr_map: bad interrupt pin %d\n", buspin); return 1; } alpha_pci_decompose_tag(pc, bustag, &bus, &device, &function); /* * The console places the interrupt mapping in the "line" value. * A value of (char)-1 indicates there is no mapping. */ if (line == 0xff) { printf("dec_eb66_intr_map: no mapping for %d/%d/%d\n", bus, device, function); return (1); } if (line >= EB66_MAX_IRQ) panic("dec_eb66_intr_map: eb66 irq too large (%d)\n", line); *ihp = line; return (0); } const char * dec_eb66_intr_string(lcv, ih) void *lcv; pci_intr_handle_t ih; { static char irqstr[15]; /* 11 + 2 + NULL + sanity */ if (ih >= EB66_MAX_IRQ) panic("dec_eb66_intr_string: bogus eb66 IRQ 0x%lx\n", ih); sprintf(irqstr, "eb66 irq %ld", ih); return (irqstr); } void * dec_eb66_intr_establish(lcv, ih, level, func, arg) void *lcv, *arg; pci_intr_handle_t ih; int level; int (*func) __P((void *)); { void *cookie; if (ih >= EB66_MAX_IRQ) panic("dec_eb66_intr_establish: bogus eb66 IRQ 0x%lx\n", ih); cookie = alpha_shared_intr_establish(eb66_pci_intr, ih, IST_LEVEL, level, func, arg, "eb66 irq"); if (cookie != NULL && alpha_shared_intr_isactive(eb66_pci_intr, ih)) eb66_intr_enable(ih); return (cookie); } void dec_eb66_intr_disestablish(lcv, cookie) void *lcv, *cookie; { struct alpha_shared_intrhand *ih = cookie; unsigned int irq = ih->ih_num; int s; s = splhigh(); alpha_shared_intr_disestablish(eb66_pci_intr, cookie, "eb66 irq"); if (alpha_shared_intr_isactive(eb66_pci_intr, irq) == 0) { eb66_intr_disable(irq); alpha_shared_intr_set_dfltsharetype(eb66_pci_intr, irq, IST_NONE); } splx(s); } void eb66_iointr(framep, vec) void *framep; unsigned long vec; { int irq; if (vec >= 0x900) { if (vec >= 0x900 + (EB66_MAX_IRQ << 4)) panic("eb66_iointr: vec 0x%lx out of range\n", vec); irq = (vec - 0x900) >> 4; if (EB66_MAX_IRQ != INTRCNT_EB66_IRQ_LEN) panic("eb66 interrupt counter sizes inconsistent"); intrcnt[INTRCNT_EB66_IRQ + irq]++; if (!alpha_shared_intr_dispatch(eb66_pci_intr, irq)) { alpha_shared_intr_stray(eb66_pci_intr, irq, "eb66 irq"); if (ALPHA_SHARED_INTR_DISABLE(eb66_pci_intr, irq)) eb66_intr_disable(irq); } return; } #if NSIO if (vec >= 0x800) { sio_iointr(framep, vec); return; } #endif panic("eb66_iointr: weird vec 0x%lx\n", vec); } #if 0 /* THIS DOES NOT WORK! see pci_eb66_intr.S. */ u_int8_t eb66_intr_mask[3] = { 0xff, 0xff, 0xff }; void eb66_intr_enable(irq) int irq; { int byte = (irq / 8), bit = (irq % 8); #if 1 printf("eb66_intr_enable: enabling %d (%d:%d)\n", irq, byte, bit); #endif eb66_intr_mask[byte] &= ~(1 << bit); bus_space_write_1(eb66_intrgate_iot, eb66_intrgate_ioh, byte, eb66_intr_mask[byte]); } void eb66_intr_disable(irq) int irq; { int byte = (irq / 8), bit = (irq % 8); #if 1 printf("eb66_intr_disable: disabling %d (%d:%d)\n", irq, byte, bit); #endif eb66_intr_mask[byte] |= (1 << bit); bus_space_write_1(eb66_intrgate_iot, eb66_intrgate_ioh, byte, eb66_intr_mask[byte]); } #endif