/* $NetBSD: amd756.c,v 1.9 2011/07/01 17:37:26 dyoung Exp $ */ /*- * Copyright (c) 1999, 2001 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. * * 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) 1999, by UCHIYAMA Yasushi * 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. The name of the developer may NOT be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. */ /* * Support for the Advanced Micro Devices AMD756 Peripheral Bus Controller. */ #include __KERNEL_RCSID(0, "$NetBSD: amd756.c,v 1.9 2011/07/01 17:37:26 dyoung Exp $"); #include #include #include #include #include #include #include #include #include #include #include struct amd756_handle { bus_space_tag_t ph_iot; bus_space_handle_t ph_regs_ioh; pci_chipset_tag_t ph_pc; pcitag_t ph_tag; }; int amd756_getclink(pciintr_icu_handle_t, int, int *); int amd756_get_intr(pciintr_icu_handle_t, int, int *); int amd756_set_intr(pciintr_icu_handle_t, int, int); int amd756_get_trigger(pciintr_icu_handle_t, int, int *); int amd756_set_trigger(pciintr_icu_handle_t, int, int); #ifdef AMD756_DEBUG static void amd756_pir_dump(struct amd756_handle *); #endif const struct pciintr_icu amd756_pci_icu = { amd756_getclink, amd756_get_intr, amd756_set_intr, amd756_get_trigger, amd756_set_trigger, }; int amd756_init(pci_chipset_tag_t pc, bus_space_tag_t iot, pcitag_t tag, pciintr_icu_tag_t *ptagp, pciintr_icu_handle_t *phandp) { struct amd756_handle *ph; ph = malloc(sizeof(*ph), M_DEVBUF, M_NOWAIT); if (ph == NULL) return (1); ph->ph_iot = iot; ph->ph_pc = pc; ph->ph_tag = tag; *ptagp = &amd756_pci_icu; *phandp = ph; #ifdef AMD756_DEBUG amd756_pir_dump(ph); #endif return (0); } int amd756_getclink(pciintr_icu_handle_t v, int link, int *clinkp) { if (AMD756_LEGAL_LINK(link - 1) == 0) return (1); *clinkp = link - 1; return (0); } int amd756_get_intr(pciintr_icu_handle_t v, int clink, int *irqp) { struct amd756_handle *ph = v; pcireg_t reg; int val; if (AMD756_LEGAL_LINK(clink) == 0) return (1); reg = AMD756_GET_PIIRQSEL(ph); val = (reg >> (4 * clink)) & 0x0f; *irqp = (val == 0) ? X86_PCI_INTERRUPT_LINE_NO_CONNECTION : val; return (0); } int amd756_set_intr(pciintr_icu_handle_t v, int clink, int irq) { struct amd756_handle *ph = v; int val; pcireg_t reg; if (AMD756_LEGAL_LINK(clink) == 0 || AMD756_LEGAL_IRQ(irq) == 0) return (1); reg = AMD756_GET_PIIRQSEL(ph); amd756_get_intr(v, clink, &val); reg &= ~(0x000f << (4 * clink)); reg |= irq << (4 * clink); AMD756_SET_PIIRQSEL(ph, reg); return (0); } int amd756_get_trigger(pciintr_icu_handle_t v, int irq, int *triggerp) { struct amd756_handle *ph = v; int i, pciirq; pcireg_t reg; if (AMD756_LEGAL_IRQ(irq) == 0) return (1); for (i = 0; i <= 3; i++) { amd756_get_intr(v, i, &pciirq); if (pciirq == irq) { reg = AMD756_GET_EDGESEL(ph); if (reg & (1 << i)) *triggerp = IST_EDGE; else *triggerp = IST_LEVEL; break; } } return (0); } int amd756_set_trigger(pciintr_icu_handle_t v, int irq, int trigger) { struct amd756_handle *ph = v; int i, pciirq; pcireg_t reg; if (AMD756_LEGAL_IRQ(irq) == 0) return (1); for (i = 0; i <= 3; i++) { amd756_get_intr(v, i, &pciirq); if (pciirq == irq) { reg = AMD756_GET_PIIRQSEL(ph); if (trigger == IST_LEVEL) reg &= ~(1 << (4 * i)); else reg |= 1 << (4 * i); AMD756_SET_PIIRQSEL(ph, reg); break; } } return (0); } #ifdef AMD756_DEBUG static void amd756_pir_dump(struct amd756_handle *ph) { int a, b; printf ("AMD756 PCI INTERRUPT ROUTING REGISTERS:\n"); a = AMD756_GET_EDGESEL(ph); b = AMD756_GET_PIIRQSEL(ph); printf ("TRIGGER: %02x, ROUTING: %04x\n", a, b); } #endif