/* $NetBSD: pci_6600.c,v 1.8 2001/07/27 00:25:20 thorpej 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 1.8 2001/07/27 00:25:20 thorpej Exp $"); #include #include #include #include #include #include #include #define _ALPHA_BUS_DMA_PRIVATE #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_NIRQ 64 #define PCI_STRAY_MAX 5 /* * Some Tsunami models have a PCI device (the USB controller) with interrupts * tied to ISA IRQ lines. The IRQ is encoded as: * * line = 0xe0 | isa_irq; */ #define DEC_6600_LINE_IS_ISA(line) ((line) >= 0xe0 && (line) <= 0xef) #define DEC_6600_LINE_ISA_IRQ(line) ((line) & 0x0f) static char *irqtype = "6600 irq"; static struct tsp_config *sioprimary; 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)); const struct evcnt *dec_6600_intr_evcnt __P((void *, pci_intr_handle_t)); int dec_6600_intr_map __P((struct pci_attach_args *, 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 *arg, 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; char *cp; 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_evcnt = dec_6600_intr_evcnt; 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(PCI_NIRQ, 8); for (i = 0; i < PCI_NIRQ; i++) { alpha_shared_intr_set_maxstrays(dec_6600_pci_intr, i, PCI_STRAY_MAX); alpha_shared_intr_set_private(dec_6600_pci_intr, i, sioprimary); cp = alpha_shared_intr_string(dec_6600_pci_intr, i); sprintf(cp, "irq %d", i); evcnt_attach_dynamic(alpha_shared_intr_evcnt( dec_6600_pci_intr, 1), EVCNT_TYPE_INTR, NULL, "dec_6600", cp); } #if NSIO sio_intr_setup(pc, iot); dec_6600_intr_enable(55); /* irq line for sio */ #endif } } int dec_6600_intr_map(pa, ihp) struct pci_attach_args *pa; pci_intr_handle_t *ihp; { pcitag_t bustag = pa->pa_intrtag; int buspin = pa->pa_intrpin, line = pa->pa_intrline; pci_chipset_tag_t pc = pa->pa_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; } 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_6600_intr_map: no mapping for %d/%d/%d\n", bus, device, function); return (1); } #if NSIO == 0 if (DEC_6600_LINE_IS_ISA(line)) { printf("dec_6600_intr_map: ISA IRQ %d for %d/%d/%d\n", DEC_6600_LINE_ISA_IRQ(line), bus, device, function); return (1); } #endif if (DEC_6600_LINE_IS_ISA(line) == 0 && line >= PCI_NIRQ) panic("dec_6600_intr_map: dec 6600 irq too large (%d)\n", line); *ihp = line; return (0); } 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]; #if NSIO if (DEC_6600_LINE_IS_ISA(ih)) return (sio_intr_string(NULL /*XXX*/, DEC_6600_LINE_ISA_IRQ(ih))); #endif snprintf(irqstr, sizeof irqstr, irqfmt, ih); return (irqstr); } const struct evcnt * dec_6600_intr_evcnt(acv, ih) void *acv; pci_intr_handle_t ih; { #if NSIO if (DEC_6600_LINE_IS_ISA(ih)) return (sio_intr_evcnt(NULL /*XXX*/, DEC_6600_LINE_ISA_IRQ(ih))); #endif return (alpha_shared_intr_evcnt(dec_6600_pci_intr, ih)); } 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; #if NSIO if (DEC_6600_LINE_IS_ISA(ih)) return (sio_intr_establish(NULL /*XXX*/, DEC_6600_LINE_ISA_IRQ(ih), IST_LEVEL, level, func, arg)); #endif if (ih >= PCI_NIRQ) panic("dec_6600_intr_establish: bogus dec 6600 IRQ 0x%lx\n", ih); cookie = alpha_shared_intr_establish(dec_6600_pci_intr, ih, IST_LEVEL, level, func, arg, irqtype); if (cookie != NULL && alpha_shared_intr_firstactive(dec_6600_pci_intr, ih)) { scb_set(0x900 + SCB_IDXTOVEC(ih), dec_6600_iointr, NULL); 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; #if NSIO /* * We have to determine if this is an ISA IRQ or not! We do this * by checking to see if the intrhand points back to an intrhead * that points to the sioprimary TSP. If not, it's an ISA IRQ. * Pretty disgusting, eh? */ if (ih->ih_intrhead->intr_private != sioprimary) { sio_intr_disestablish(NULL /*XXX*/, cookie); return; } #endif 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); scb_free(0x900 + SCB_IDXTOVEC(irq)); } splx(s); } void dec_6600_iointr(arg, vec) void *arg; unsigned long vec; { int irq; irq = SCB_VECTOIDX(vec - 0x900); if (irq >= PCI_NIRQ) panic("iointr: irq %d is too high", 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); } } 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 this isn't PCI bus #0 on the TSP that holds the PCI-ISA * bridge, all bets are off. */ if (bus != 0 || pc->pc_intr_v != sioprimary) return (NULL); irq = PCIIDE_COMPAT_IRQ(chan); #if NSIO cookie = sio_intr_establish(NULL /*XXX*/, irq, IST_EDGE, IPL_BIO, func, arg); if (cookie == NULL) return (NULL); printf("%s: %s channel interrupting at %s\n", dev->dv_xname, PCIIDE_CHANNEL_NAME(chan), sio_intr_string(NULL /*XXX*/, irq)); #endif return (cookie); }