Annotation of sys/arch/i386/pci/sis85c503.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: sis85c503.c,v 1.7 2006/09/19 11:06:34 jsg Exp $ */
! 2: /* $NetBSD: sis85c503.c,v 1.2 2000/07/18 11:24:09 soda Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 1999 The NetBSD Foundation, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to The NetBSD Foundation
! 9: * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
! 10: * NASA Ames Research Center.
! 11: *
! 12: * Redistribution and use in source and binary forms, with or without
! 13: * modification, are permitted provided that the following conditions
! 14: * are met:
! 15: * 1. Redistributions of source code must retain the above copyright
! 16: * notice, this list of conditions and the following disclaimer.
! 17: * 2. Redistributions in binary form must reproduce the above copyright
! 18: * notice, this list of conditions and the following disclaimer in the
! 19: * documentation and/or other materials provided with the distribution.
! 20: * 3. All advertising materials mentioning features or use of this software
! 21: * must display the following acknowledgement:
! 22: * This product includes software developed by the NetBSD
! 23: * Foundation, Inc. and its contributors.
! 24: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 25: * contributors may be used to endorse or promote products derived
! 26: * from this software without specific prior written permission.
! 27: *
! 28: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 29: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 30: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 31: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 32: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 33: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 34: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 35: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 36: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 37: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 38: * POSSIBILITY OF SUCH DAMAGE.
! 39: */
! 40:
! 41: /*
! 42: * Copyright (c) 1999, by UCHIYAMA Yasushi
! 43: * All rights reserved.
! 44: *
! 45: * Redistribution and use in source and binary forms, with or without
! 46: * modification, are permitted provided that the following conditions
! 47: * are met:
! 48: * 1. Redistributions of source code must retain the above copyright
! 49: * notice, this list of conditions and the following disclaimer.
! 50: * 2. The name of the developer may NOT be used to endorse or promote products
! 51: * derived from this software without specific prior written permission.
! 52: *
! 53: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
! 54: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 55: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 56: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
! 57: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 58: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 59: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 60: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 61: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 62: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 63: * SUCH DAMAGE.
! 64: */
! 65:
! 66: /*
! 67: * Support for the SiS 85c503 PCI-ISA bridge interrupt controller.
! 68: */
! 69:
! 70: #include <sys/param.h>
! 71: #include <sys/systm.h>
! 72: #include <sys/device.h>
! 73:
! 74: #include <machine/intr.h>
! 75: #include <machine/bus.h>
! 76:
! 77: #include <dev/pci/pcivar.h>
! 78: #include <dev/pci/pcireg.h>
! 79: #include <dev/pci/pcidevs.h>
! 80:
! 81: #include <i386/pci/pcibiosvar.h>
! 82: #include <i386/pci/sis85c503reg.h>
! 83: #include <i386/pci/piixvar.h>
! 84:
! 85: int sis85c503_getclink(pciintr_icu_handle_t, int, int *);
! 86: int sis85c503_get_intr(pciintr_icu_handle_t, int, int *);
! 87: int sis85c503_set_intr(pciintr_icu_handle_t, int, int);
! 88:
! 89: const struct pciintr_icu sis85c503_pci_icu = {
! 90: sis85c503_getclink,
! 91: sis85c503_get_intr,
! 92: sis85c503_set_intr,
! 93: piix_get_trigger,
! 94: piix_set_trigger,
! 95: };
! 96:
! 97: int
! 98: sis85c503_init(pci_chipset_tag_t pc, bus_space_tag_t iot, pcitag_t tag,
! 99: pciintr_icu_tag_t *ptagp, pciintr_icu_handle_t *phandp)
! 100: {
! 101:
! 102: if (piix_init(pc, iot, tag, ptagp, phandp) == 0) {
! 103: *ptagp = &sis85c503_pci_icu;
! 104: return (0);
! 105: }
! 106:
! 107: return (1);
! 108: }
! 109:
! 110: int
! 111: sis85c503_getclink(pciintr_icu_handle_t v, int link, int *clinkp)
! 112: {
! 113:
! 114: /* Pattern 1: simple. */
! 115: if (link >= 1 && link <= 4) {
! 116: *clinkp = SIS85C503_CFG_PIRQ_REGSTART + link - 1;
! 117: return (0);
! 118: }
! 119:
! 120: /* Pattern 2: configuration register offset */
! 121: if (link >= SIS85C503_CFG_PIRQ_REGSTART &&
! 122: link <= SIS85C503_CFG_PIRQ_REGEND) {
! 123: *clinkp = link;
! 124: return (0);
! 125: }
! 126:
! 127: return (1);
! 128: }
! 129:
! 130: int
! 131: sis85c503_get_intr(pciintr_icu_handle_t v, int clink, int *irqp)
! 132: {
! 133: struct piix_handle *ph = v;
! 134: pcireg_t reg;
! 135:
! 136: if (SIS85C503_LEGAL_LINK(clink) == 0)
! 137: return (1);
! 138:
! 139: reg = pci_conf_read(ph->ph_pc, ph->ph_tag,
! 140: SIS85C503_CFG_PIRQ_REGOFS(clink));
! 141: reg = SIS85C503_CFG_PIRQ_REG(reg, clink);
! 142:
! 143: if (reg & SIS85C503_CFG_PIRQ_ROUTE_DISABLE)
! 144: *irqp = 0xff;
! 145: else
! 146: *irqp = reg & SIS85C503_CFG_PIRQ_INTR_MASK;
! 147:
! 148: return (0);
! 149: }
! 150:
! 151: int
! 152: sis85c503_set_intr(pciintr_icu_handle_t v, int clink, int irq)
! 153: {
! 154: struct piix_handle *ph = v;
! 155: int shift;
! 156: pcireg_t reg;
! 157:
! 158: if (SIS85C503_LEGAL_LINK(clink) == 0 || SIS85C503_LEGAL_IRQ(irq) == 0)
! 159: return (1);
! 160:
! 161: reg = pci_conf_read(ph->ph_pc, ph->ph_tag,
! 162: SIS85C503_CFG_PIRQ_REGOFS(clink));
! 163: shift = SIS85C503_CFG_PIRQ_SHIFT(clink);
! 164: reg &= ~((SIS85C503_CFG_PIRQ_ROUTE_DISABLE |
! 165: SIS85C503_CFG_PIRQ_INTR_MASK) << shift);
! 166: reg |= (irq << shift);
! 167: pci_conf_write(ph->ph_pc, ph->ph_tag, SIS85C503_CFG_PIRQ_REGOFS(clink),
! 168: reg);
! 169:
! 170: return (0);
! 171: }
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