Annotation of sys/arch/i386/pci/ali1543.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: ali1543.c,v 1.2 2002/05/02 17:46:00 mickey Exp $ */
! 2: /* $NetBSD: ali1543.c,v 1.2 2001/09/13 14:00:52 tshiozak Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 2001
! 6: * HAYAKAWA Koichi. All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. The name of the author may not be used to endorse or promote products
! 17: * derived from this software without specific prior written permission.
! 18: *
! 19: *
! 20: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 21: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
! 22: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
! 23: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
! 24: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
! 25: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
! 26: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
! 28: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
! 29: * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 30: * POSSIBILITY OF SUCH DAMAGE.
! 31: */
! 32:
! 33: /*-
! 34: * Copyright (c) 1999 The NetBSD Foundation, Inc.
! 35: * All rights reserved.
! 36: *
! 37: * This code is derived from software contributed to The NetBSD Foundation
! 38: * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
! 39: * NASA Ames Research Center.
! 40: *
! 41: * Redistribution and use in source and binary forms, with or without
! 42: * modification, are permitted provided that the following conditions
! 43: * are met:
! 44: * 1. Redistributions of source code must retain the above copyright
! 45: * notice, this list of conditions and the following disclaimer.
! 46: * 2. Redistributions in binary form must reproduce the above copyright
! 47: * notice, this list of conditions and the following disclaimer in the
! 48: * documentation and/or other materials provided with the distribution.
! 49: * 3. All advertising materials mentioning features or use of this software
! 50: * must display the following acknowledgement:
! 51: * This product includes software developed by the NetBSD
! 52: * Foundation, Inc. and its contributors.
! 53: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 54: * contributors may be used to endorse or promote products derived
! 55: * from this software without specific prior written permission.
! 56: *
! 57: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 58: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 59: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 60: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 61: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 62: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 63: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 64: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 65: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 66: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 67: * POSSIBILITY OF SUCH DAMAGE.
! 68: */
! 69:
! 70: /*
! 71: * Copyright (c) 1999, by UCHIYAMA Yasushi
! 72: * All rights reserved.
! 73: *
! 74: * Redistribution and use in source and binary forms, with or without
! 75: * modification, are permitted provided that the following conditions
! 76: * are met:
! 77: * 1. Redistributions of source code must retain the above copyright
! 78: * notice, this list of conditions and the following disclaimer.
! 79: * 2. The name of the developer may NOT be used to endorse or promote products
! 80: * derived from this software without specific prior written permission.
! 81: *
! 82: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
! 83: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 84: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 85: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
! 86: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 87: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 88: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 89: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 90: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 91: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 92: * SUCH DAMAGE.
! 93: */
! 94:
! 95: /* HAYAKAWA Koichi wrote ALi 1543 PCI ICU code basing on VIA82C586 driver */
! 96:
! 97: #include <sys/param.h>
! 98: #include <sys/systm.h>
! 99: #include <sys/errno.h>
! 100: #include <sys/device.h>
! 101: #include <sys/malloc.h>
! 102: #include <sys/proc.h>
! 103:
! 104: #include <machine/intr.h>
! 105: #include <machine/bus.h>
! 106:
! 107: #include <dev/pci/pcivar.h>
! 108: #include <dev/pci/pcireg.h>
! 109: #include <dev/pci/pcidevs.h>
! 110:
! 111: #include <i386/pci/pcibiosvar.h>
! 112: #include <i386/pci/piixvar.h>
! 113:
! 114:
! 115: int ali1543_getclink (pciintr_icu_handle_t, int, int *);
! 116: int ali1543_get_intr (pciintr_icu_handle_t, int, int *);
! 117: int ali1543_set_intr (pciintr_icu_handle_t, int, int);
! 118:
! 119:
! 120: const struct pciintr_icu ali1543_icu = {
! 121: ali1543_getclink,
! 122: ali1543_get_intr,
! 123: ali1543_set_intr,
! 124: piix_get_trigger,
! 125: piix_set_trigger,
! 126: };
! 127:
! 128:
! 129: /*
! 130: * Linux source code (linux/arch/i386/kernel/pci-irq.c) says that the
! 131: * irq order of ALi PCI ICU is shuffled.
! 132: */
! 133: const static int ali1543_intr_shuffle_get[16] = {
! 134: 0, 9, 3, 10, 4, 5, 7, 6, 1, 11, 0, 12, 0, 14, 0, 15
! 135: };
! 136: const static int ali1543_intr_shuffle_set[16] = {
! 137: 0, 8, 0, 2, 4, 5, 7, 6, 0, 1, 3, 9, 11, 0, 13, 15
! 138: };
! 139:
! 140: #define ALI1543_IRQ_MASK 0xdefa
! 141:
! 142: #define ALI1543_LEGAL_LINK(link) (((link) >= 0) && ((link) <= 7))
! 143: #define ALI1543_LEGAL_IRQ(irq) ((1 << (irq)) & ALI1543_IRQ_MASK)
! 144:
! 145: #define ALI1543_INTR_CFG_REG 0x48
! 146:
! 147: #define ALI1543_INTR_PIRQA_SHIFT 0
! 148: #define ALI1543_INTR_PIRQA_MASK 0x0000000f
! 149: #define ALI1543_INTR_PIRQB_SHIFT 4
! 150: #define ALI1543_INTR_PIRQB_MASK 0x000000f0
! 151: #define ALI1543_INTR_PIRQC_SHIFT 8
! 152: #define ALI1543_INTR_PIRQC_MASK 0x00000f00
! 153: #define ALI1543_INTR_PIRQD_SHIFT 12
! 154: #define ALI1543_INTR_PIRQD_MASK 0x0000f000
! 155:
! 156: #define ALI1543_INTR_PIRQ_SHIFT(clink) ((clink)*4)
! 157: #define ALI1543_INTR_PIRQ_IRQ(reg, clink) \
! 158: (((reg) >> ((clink)*4)) & 0x0f)
! 159: #define ALI1543_PIRQ(reg, clink) \
! 160: ali1543_intr_shuffle_get[ALI1543_INTR_PIRQ_IRQ((reg), (clink))]
! 161:
! 162:
! 163: int
! 164: ali1543_init(pci_chipset_tag_t pc, bus_space_tag_t iot, pcitag_t tag,
! 165: pciintr_icu_tag_t *ptagp, pciintr_icu_handle_t *phandp)
! 166: {
! 167:
! 168: if (piix_init(pc, iot, tag, ptagp, phandp) == 0) {
! 169: *ptagp = &ali1543_icu;
! 170:
! 171: return (0);
! 172: }
! 173:
! 174: return (1);
! 175: }
! 176:
! 177: int
! 178: ali1543_getclink(pciintr_icu_handle_t v, int link, int *clinkp)
! 179: {
! 180:
! 181: if (ALI1543_LEGAL_LINK(link - 1)) {
! 182: *clinkp = link - 1;
! 183: return (0);
! 184: }
! 185:
! 186: return (1);
! 187: }
! 188:
! 189: int
! 190: ali1543_get_intr(pciintr_icu_handle_t v, int clink, int *irqp)
! 191: {
! 192: struct piix_handle *ph = v;
! 193: pcireg_t reg;
! 194: int val;
! 195:
! 196: if (ALI1543_LEGAL_LINK(clink) == 0)
! 197: return (1);
! 198:
! 199: reg = pci_conf_read(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG);
! 200: #ifdef DEBUG_1543
! 201: printf("ali1543: PIRQ reg 0x%08x\n", reg); /* XXX debug */
! 202: #endif /* DEBUG_1543 */
! 203: val = ALI1543_PIRQ(reg, clink);
! 204: *irqp = (val == 0) ?
! 205: I386_PCI_INTERRUPT_LINE_NO_CONNECTION : val;
! 206:
! 207: return (0);
! 208: }
! 209:
! 210: int
! 211: ali1543_set_intr(pciintr_icu_handle_t v, int clink, int irq)
! 212: {
! 213: struct piix_handle *ph = v;
! 214: int shift, val;
! 215: pcireg_t reg;
! 216:
! 217: if (ALI1543_LEGAL_LINK(clink) == 0 || ALI1543_LEGAL_IRQ(irq) == 0)
! 218: return (1);
! 219:
! 220: reg = pci_conf_read(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG);
! 221: ali1543_get_intr(v, clink, &val);
! 222: shift = ALI1543_INTR_PIRQ_SHIFT(clink);
! 223: reg &= ~(0x0f << shift);
! 224: reg |= (ali1543_intr_shuffle_set[irq] << shift);
! 225: pci_conf_write(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG, reg);
! 226: if (ali1543_get_intr(v, clink, &val) != 0 || val != irq)
! 227: return (1);
! 228:
! 229: return (0);
! 230: }
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