cy_pci.c revision 127885
1/* 2 * Copyright (c) 1996, David Greenman 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice unmodified, this list of conditions, and the following 10 * disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28/* 29 * Cyclades Y PCI serial interface driver 30 */ 31 32#include <sys/cdefs.h> 33__FBSDID("$FreeBSD: head/sys/dev/cy/cy_pci.c 127885 2004-04-05 08:16:23Z bde $"); 34 35#include "opt_cy_pci_fastintr.h" 36 37#include <sys/param.h> 38#include <sys/systm.h> 39#include <sys/kernel.h> 40#include <sys/bus.h> 41 42#include <machine/bus.h> 43#include <sys/rman.h> 44#include <machine/resource.h> 45 46#include <vm/vm.h> 47#include <vm/pmap.h> 48 49#include <dev/pci/pcivar.h> 50 51#define CY_PCI_BASE_ADDR0 0x10 52#define CY_PCI_BASE_ADDR1 0x14 53#define CY_PCI_BASE_ADDR2 0x18 54 55#define CY_PLX_9050_ICS 0x4c 56#define CY_PLX_9060_ICS 0x68 57#define CY_PLX_9050_ICS_IENABLE 0x040 58#define CY_PLX_9050_ICS_LOCAL_IENABLE 0x001 59#define CY_PLX_9050_ICS_LOCAL_IPOLARITY 0x002 60#define CY_PLX_9060_ICS_IENABLE 0x100 61#define CY_PLX_9060_ICS_LOCAL_IENABLE 0x800 62 63/* Cyclom-Y Custom Register for PLX ID. */ 64#define PLX_VER 0x3400 65#define PLX_9050 0x0b 66#define PLX_9060 0x0c 67#define PLX_9080 0x0d 68 69extern devclass_t cy_devclass; 70 71void *cyattach_common(u_char volatile *iobase, int cy_align); 72driver_intr_t cyintr; 73 74static int cy_pci_attach(device_t dev); 75static int cy_pci_probe(device_t dev); 76 77static device_method_t cy_pci_methods[] = { 78 /* Device interface. */ 79 DEVMETHOD(device_probe, cy_pci_probe), 80 DEVMETHOD(device_attach, cy_pci_attach), 81 82 { 0, 0 } 83}; 84 85static driver_t cy_pci_driver = { 86 "cy", 87 cy_pci_methods, 88 0, 89}; 90 91DRIVER_MODULE(cy, pci, cy_pci_driver, cy_devclass, 0, 0); 92MODULE_DEPEND(cy, pci, 1, 1, 1); 93 94static int 95cy_pci_probe(dev) 96 device_t dev; 97{ 98 u_int32_t device_id; 99 100 device_id = pci_get_devid(dev); 101 device_id &= ~0x00060000; 102 if (device_id != 0x0100120e && device_id != 0x0101120e) 103 return (ENXIO); 104 device_set_desc(dev, "Cyclades Cyclom-Y Serial Adapter"); 105 return (0); 106} 107 108static int 109cy_pci_attach(dev) 110 device_t dev; 111{ 112 struct resource *ioport_res, *irq_res, *mem_res; 113 void *irq_cookie, *vaddr, *vsc; 114 u_int32_t ioport; 115 int irq_setup, ioport_rid, irq_rid, mem_rid; 116 u_char plx_ver; 117 118 ioport_res = NULL; 119 irq_res = NULL; 120 mem_res = NULL; 121 122 ioport_rid = CY_PCI_BASE_ADDR1; 123 ioport_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &ioport_rid, 124 0ul, ~0ul, 0ul, RF_ACTIVE); 125 if (ioport_res == NULL) { 126 device_printf(dev, "ioport resource allocation failed\n"); 127 goto fail; 128 } 129 ioport = rman_get_start(ioport_res); 130 131 mem_rid = CY_PCI_BASE_ADDR2; 132 mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &mem_rid, 133 0ul, ~0ul, 0ul, RF_ACTIVE); 134 if (mem_res == NULL) { 135 device_printf(dev, "memory resource allocation failed\n"); 136 goto fail; 137 } 138 vaddr = rman_get_virtual(mem_res); 139 140 vsc = cyattach_common(vaddr, 1); 141 if (vsc == NULL) { 142 device_printf(dev, "no ports found!\n"); 143 goto fail; 144 } 145 146 irq_rid = 0; 147 irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &irq_rid, 0ul, ~0ul, 0ul, 148 RF_SHAREABLE | RF_ACTIVE); 149 if (irq_res == NULL) { 150 device_printf(dev, "interrupt resource allocation failed\n"); 151 goto fail; 152 } 153#ifdef CY_PCI_FASTINTR 154 irq_setup = bus_setup_intr(dev, irq_res, INTR_TYPE_TTY | INTR_FAST, 155 cyintr, vsc, &irq_cookie); 156#else 157 irq_setup = ENXIO; 158#endif 159 if (irq_setup != 0) 160 irq_setup = bus_setup_intr(dev, irq_res, INTR_TYPE_TTY, 161 cyintr, vsc, &irq_cookie); 162 if (irq_setup != 0) { 163 device_printf(dev, "interrupt setup failed\n"); 164 goto fail; 165 } 166 167 /* 168 * Enable the "local" interrupt input to generate a 169 * PCI interrupt. 170 */ 171 plx_ver = *((u_char *)vaddr + PLX_VER) & 0x0f; 172 switch (plx_ver) { 173 case PLX_9050: 174 outw(ioport + CY_PLX_9050_ICS, 175 CY_PLX_9050_ICS_IENABLE | CY_PLX_9050_ICS_LOCAL_IENABLE | 176 CY_PLX_9050_ICS_LOCAL_IPOLARITY); 177 break; 178 case PLX_9060: 179 case PLX_9080: 180 default: /* Old board, use PLX_9060 values. */ 181 outw(ioport + CY_PLX_9060_ICS, 182 inw(ioport + CY_PLX_9060_ICS) | CY_PLX_9060_ICS_IENABLE | 183 CY_PLX_9060_ICS_LOCAL_IENABLE); 184 break; 185 } 186 187 return (0); 188 189fail: 190 if (ioport_res != NULL) 191 bus_release_resource(dev, SYS_RES_IOPORT, ioport_rid, 192 ioport_res); 193 if (irq_res != NULL) 194 bus_release_resource(dev, SYS_RES_IRQ, irq_rid, irq_res); 195 if (mem_res != NULL) 196 bus_release_resource(dev, SYS_RES_MEMORY, mem_rid, mem_res); 197 return (ENXIO); 198} 199