/* $NetBSD: pci_6600.c,v 1.1 1999/06/29 06:46:46 ross Exp $ */ /*- * Copyright (c) 1999 by Ross Harvey. 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Ross Harvey. * 4. The name of Ross Harvey may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY ROSS HARVEY ``AS IS'' AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURP0SE * ARE DISCLAIMED. IN NO EVENT SHALL ROSS HARVEY 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. * */ #include __KERNEL_RCSID(0, "$NetBSD: pci_6600.c,v 1.1 1999/06/29 06:46:46 ross Exp $"); #include #include #include #include #include #include #include #define _ALPHA_BUS_DMA_PRIVATE #include #include #include #include #include #include #include #include #include #include #include #define pci_6600() { Generate ctags(1) key. } #include "sio.h" #if NSIO #include #endif #define PCI_STRAY_MAX 5 #define DEC_6600_MAX_IRQ INTRCNT_OTHER_LEN static char *irqtype = "6600 irq"; static struct tsp_config *sioprimary; static void checkmaxirq __P((pci_intr_handle_t ih)); void dec_6600_intr_disestablish __P((void *, void *)); void *dec_6600_intr_establish __P(( void *, pci_intr_handle_t, int, int (*func)(void *), void *)); const char *dec_6600_intr_string __P((void *, pci_intr_handle_t)); int dec_6600_intr_map __P((void *, pcitag_t, int, int, pci_intr_handle_t *)); void *dec_6600_pciide_compat_intr_establish __P((void *, struct device *, struct pci_attach_args *, int, int (*)(void *), void *)); struct alpha_shared_intr *dec_6600_pci_intr; void dec_6600_iointr __P((void *framep, unsigned long vec)); extern void dec_6600_intr_enable __P((int irq)); extern void dec_6600_intr_disable __P((int irq)); void pci_6600_pickintr(pcp) struct tsp_config *pcp; { bus_space_tag_t iot = &pcp->pc_iot; pci_chipset_tag_t pc = &pcp->pc_pc; int i; pc->pc_intr_v = pcp; pc->pc_intr_map = dec_6600_intr_map; pc->pc_intr_string = dec_6600_intr_string; pc->pc_intr_establish = dec_6600_intr_establish; pc->pc_intr_disestablish = dec_6600_intr_disestablish; pc->pc_pciide_compat_intr_establish = NULL; /* * System-wide and Pchip-0-only logic... */ if (dec_6600_pci_intr == NULL) { sioprimary = pcp; pc->pc_pciide_compat_intr_establish = dec_6600_pciide_compat_intr_establish; dec_6600_pci_intr = alpha_shared_intr_alloc(DEC_6600_MAX_IRQ); for (i = 0; i < DEC_6600_MAX_IRQ; i++) alpha_shared_intr_set_maxstrays(dec_6600_pci_intr, i, PCI_STRAY_MAX); #if NSIO sio_intr_setup(pc, iot); dec_6600_intr_enable(55); /* irq line for sio */ #endif set_iointr(dec_6600_iointr); } } int dec_6600_intr_map(acv, bustag, buspin, line, ihp) void *acv; pcitag_t bustag; int buspin, line; pci_intr_handle_t *ihp; { struct tsp_config *pcp = acv; pci_chipset_tag_t pc = &pcp->pc_pc; int bus, device, function; if (buspin == 0) { /* No IRQ used. */ return 1; } if (buspin > 4) { printf("intr_map: bad interrupt pin %d\n", buspin); return 1; } /* * The console places the interrupt mapping in the "line" value. * A value of (char)-1 indicates there is no mapping. */ if (line >= 64) { /* for usb host bridge, line == 0xea (?!) */ alpha_pci_decompose_tag(pc, bustag, &bus, &device, &function); printf("intr_map: line=0x%x, no mapping for %d/%d/%d\n", line, bus, device, function); return (1); } if (line >= INTRCNT_OTHER_LEN) panic("intr_map: irq too large (%d)\n", line); *ihp = line; checkmaxirq(*ihp); return (0); } static void checkmaxirq(ih) pci_intr_handle_t ih; { if (ih > DEC_6600_MAX_IRQ) panic("extreme irq %ld\n", ih); } const char * dec_6600_intr_string(acv, ih) void *acv; pci_intr_handle_t ih; { static const char irqfmt[] = "dec_6600 irq %ld"; static char irqstr[sizeof irqfmt]; checkmaxirq(ih); snprintf(irqstr, sizeof irqstr, irqfmt, ih); return (irqstr); } void * dec_6600_intr_establish(acv, ih, level, func, arg) void *acv, *arg; pci_intr_handle_t ih; int level; int (*func) __P((void *)); { void *cookie; checkmaxirq(ih); cookie = alpha_shared_intr_establish(dec_6600_pci_intr, ih, IST_LEVEL, level, func, arg, irqtype); if (cookie != NULL && alpha_shared_intr_isactive(dec_6600_pci_intr, ih)) dec_6600_intr_enable(ih); return (cookie); } void dec_6600_intr_disestablish(acv, cookie) void *acv, *cookie; { struct alpha_shared_intrhand *ih = cookie; unsigned int irq = ih->ih_num; int s; s = splhigh(); alpha_shared_intr_disestablish(dec_6600_pci_intr, cookie, irqtype); if (alpha_shared_intr_isactive(dec_6600_pci_intr, irq) == 0) { dec_6600_intr_disable(irq); alpha_shared_intr_set_dfltsharetype(dec_6600_pci_intr, irq, IST_NONE); } splx(s); } void dec_6600_iointr(framep, vec) void *framep; unsigned long vec; { int irq; if (vec >= 0x900) { irq = (vec - 0x900) >> 4; if(irq >= INTRCNT_OTHER_LEN) panic("iointr: irq %d is too high", irq); ++intrcnt[INTRCNT_OTHER_BASE + irq]; if (!alpha_shared_intr_dispatch(dec_6600_pci_intr, irq)) { alpha_shared_intr_stray(dec_6600_pci_intr, irq, irqtype); if (ALPHA_SHARED_INTR_DISABLE(dec_6600_pci_intr, irq)) dec_6600_intr_disable(irq); } return; } #if NSIO if (vec >= 0x800) { sio_iointr(framep, vec); return; } #endif panic("iointr: weird vec 0x%lx\n", vec); } void dec_6600_intr_enable(irq) int irq; { alpha_mb(); STQP(TS_C_DIM0) |= 1UL << irq; alpha_mb(); } void dec_6600_intr_disable(irq) int irq; { alpha_mb(); STQP(TS_C_DIM0) &= ~(1UL << irq); alpha_mb(); } void * dec_6600_pciide_compat_intr_establish(v, dev, pa, chan, func, arg) void *v; struct device *dev; struct pci_attach_args *pa; int chan; int (*func) __P((void *)); void *arg; { pci_chipset_tag_t pc = pa->pa_pc; void *cookie = NULL; int bus, irq; alpha_pci_decompose_tag(pc, pa->pa_tag, &bus, NULL, NULL); if (bus != 0 || pc->pc_intr_v != sioprimary) printf("Warning: strange pciide\n"); irq = PCIIDE_COMPAT_IRQ(chan); #if NSIO cookie = sio_intr_establish(NULL /*XXX*/, irq, IST_EDGE, IPL_BIO, func, arg); #endif return (cookie); }