cy_pci.c revision 92467
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 * $FreeBSD: head/sys/dev/cy/cy_pci.c 92467 2002-03-17 04:10:38Z bde $ 28 */ 29 30/* 31 * Cyclades Y PCI serial interface driver 32 */ 33 34#include "opt_cy_pci_fastintr.h" 35 36#include <sys/param.h> 37#include <sys/systm.h> 38#include <sys/kernel.h> 39#include <sys/bus.h> 40 41#include <machine/bus.h> 42#include <sys/rman.h> 43#include <machine/resource.h> 44 45#include <vm/vm.h> 46#include <vm/pmap.h> 47 48#include <dev/pci/pcivar.h> 49 50#define CY_PCI_BASE_ADDR0 0x10 51#define CY_PCI_BASE_ADDR1 0x14 52#define CY_PCI_BASE_ADDR2 0x18 53 54#define CY_PLX_9050_ICS 0x4c 55#define CY_PLX_9060_ICS 0x68 56#define CY_PLX_9050_ICS_IENABLE 0x040 57#define CY_PLX_9050_ICS_LOCAL_IENABLE 0x001 58#define CY_PLX_9050_ICS_LOCAL_IPOLARITY 0x002 59#define CY_PLX_9060_ICS_IENABLE 0x100 60#define CY_PLX_9060_ICS_LOCAL_IENABLE 0x800 61 62/* Cyclom-Y Custom Register for PLX ID. */ 63#define PLX_VER 0x3400 64#define PLX_9050 0x0b 65#define PLX_9060 0x0c 66#define PLX_9080 0x0d 67 68extern int cyattach_common(void *, int); /* Not exactly correct */ 69extern void cyintr(int); 70 71static int cy_pci_attach __P((device_t dev)); 72static int cy_pci_probe __P((device_t dev)); 73 74static device_method_t cy_pci_methods[] = { 75 /* Device interface. */ 76 DEVMETHOD(device_probe, cy_pci_probe), 77 DEVMETHOD(device_attach, cy_pci_attach), 78 79 { 0, 0 } 80}; 81 82static driver_t cy_pci_driver = { 83 "cy", 84 cy_pci_methods, 85 0, 86}; 87 88static devclass_t cy_devclass; 89 90DRIVER_MODULE(cy, pci, cy_pci_driver, cy_devclass, 0, 0); 91 92static int 93cy_pci_probe(dev) 94 device_t dev; 95{ 96 u_int32_t device_id; 97 98 device_id = pci_get_devid(dev); 99 device_id &= ~0x00060000; 100 if (device_id != 0x0100120e && device_id != 0x0101120e) 101 return (ENXIO); 102 device_set_desc(dev, "Cyclades Cyclom-Y Serial Adapter"); 103 return (0); 104} 105 106static int 107cy_pci_attach(dev) 108 device_t dev; 109{ 110 struct resource *ioport_res, *irq_res, *mem_res; 111 void *irq_cookie, *vaddr; 112 u_int32_t ioport; 113 int adapter, irq_setup, ioport_rid, irq_rid, mem_rid; 114 u_char plx_ver; 115 116 ioport_res = NULL; 117 irq_res = NULL; 118 mem_res = NULL; 119 120 ioport_rid = CY_PCI_BASE_ADDR1; 121 ioport_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &ioport_rid, 122 0ul, ~0ul, 0ul, RF_ACTIVE); 123 if (ioport_res == NULL) { 124 device_printf(dev, "ioport resource allocation failed\n"); 125 goto fail; 126 } 127 ioport = rman_get_start(ioport_res); 128 129 mem_rid = CY_PCI_BASE_ADDR2; 130 mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &mem_rid, 131 0ul, ~0ul, 0ul, RF_ACTIVE); 132 if (mem_res == NULL) { 133 device_printf(dev, "memory resource allocation failed\n"); 134 goto fail; 135 } 136 vaddr = rman_get_virtual(mem_res); 137 138 adapter = cyattach_common(vaddr, 1); 139 if (adapter < 0) { 140 device_printf(dev, "no ports found!\n"); 141 goto fail; 142 } 143 144 /* 145 * Allocate our interrupt. 146 * XXX Using the ISA interrupt handler directly is a bit of a violation 147 * since it doesn't actually take the same argument. For PCI, the 148 * argument is a void * token, but for ISA it is a unit. Since 149 * there is no overlap in PCI/ISA unit numbers for this driver, and 150 * since the ISA driver must handle the interrupt anyway, we use 151 * the unit number as the token even for PCI. 152 */ 153 irq_rid = 0; 154 irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &irq_rid, 0ul, ~0ul, 0ul, 155 RF_SHAREABLE | RF_ACTIVE); 156 if (irq_res == NULL) { 157 device_printf(dev, "interrupt resource allocation failed\n"); 158 goto fail; 159 } 160#ifdef CY_PCI_FASTINTR 161 irq_setup = bus_setup_intr(dev, irq_res, INTR_TYPE_TTY | INTR_FAST, 162 (driver_intr_t *)cyintr, (void *)adapter, &irq_cookie); 163#else 164 irq_setup = ENXIO; 165#endif 166 if (irq_setup != 0) 167 irq_setup = bus_setup_intr(dev, irq_res, INTR_TYPE_TTY, 168 (driver_intr_t *)cyintr, (void *)adapter, &irq_cookie); 169 if (irq_setup != 0) { 170 device_printf(dev, "interrupt setup failed\n"); 171 goto fail; 172 } 173 174 /* 175 * Enable the "local" interrupt input to generate a 176 * PCI interrupt. 177 */ 178 plx_ver = *((u_char *)vaddr + PLX_VER) & 0x0f; 179 switch (plx_ver) { 180 case PLX_9050: 181 outw(ioport + CY_PLX_9050_ICS, 182 CY_PLX_9050_ICS_IENABLE | CY_PLX_9050_ICS_LOCAL_IENABLE | 183 CY_PLX_9050_ICS_LOCAL_IPOLARITY); 184 break; 185 case PLX_9060: 186 case PLX_9080: 187 default: /* Old board, use PLX_9060 values. */ 188 outw(ioport + CY_PLX_9060_ICS, 189 inw(ioport + CY_PLX_9060_ICS) | CY_PLX_9060_ICS_IENABLE | 190 CY_PLX_9060_ICS_LOCAL_IENABLE); 191 break; 192 } 193 194 return (0); 195 196fail: 197 if (ioport_res != NULL) 198 bus_release_resource(dev, SYS_RES_IOPORT, ioport_rid, 199 ioport_res); 200 if (irq_res != NULL) 201 bus_release_resource(dev, SYS_RES_IRQ, irq_rid, irq_res); 202 if (mem_res != NULL) 203 bus_release_resource(dev, SYS_RES_MEMORY, mem_rid, mem_res); 204 return (ENXIO); 205} 206