1 /* 2 * FreeBSD, PCI product support functions 3 * 4 * Copyright (c) 1995, 1996, 1997, 1998, 1999, 2000 Justin T. Gibbs 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions, and the following disclaimer, 12 * without modification, immediately at the beginning of the file. 13 * 2. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * Alternatively, this software may be distributed under the terms of the 17 * GNU Public License ("GPL"). 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * $Id$ 32 * 33 * $FreeBSD$ 34 */ 35 36 #include <dev/aic7xxx/aic7xxx_freebsd.h> 37 38 #define AHC_PCI_IOADDR PCIR_MAPS /* I/O Address */ 39 #define AHC_PCI_MEMADDR (PCIR_MAPS + 4) /* Mem I/O Address */ 40 41 static int ahc_pci_probe(device_t dev); 42 static int ahc_pci_attach(device_t dev); 43 44 static device_method_t ahc_pci_methods[] = { 45 /* Device interface */ 46 DEVMETHOD(device_probe, ahc_pci_probe), 47 DEVMETHOD(device_attach, ahc_pci_attach), 48 { 0, 0 } 49 }; 50 51 static driver_t ahc_pci_driver = { 52 "ahc", 53 ahc_pci_methods, 54 sizeof(struct ahc_softc) 55 }; 56 57 static devclass_t ahc_devclass; 58 59 DRIVER_MODULE(ahc, pci, ahc_pci_driver, ahc_devclass, 0, 0); 60 61 static int 62 ahc_pci_probe(device_t dev) 63 { 64 struct ahc_pci_identity *entry; 65 66 entry = ahc_find_pci_device(dev); 67 if (entry != NULL) { 68 device_set_desc(dev, entry->name); 69 return (0); 70 } 71 return (ENXIO); 72 } 73 74 static int 75 ahc_pci_attach(device_t dev) 76 { 77 struct ahc_pci_identity *entry; 78 struct ahc_softc *ahc; 79 char *name; 80 int error; 81 82 entry = ahc_find_pci_device(dev); 83 if (entry == NULL) 84 return (ENXIO); 85 86 /* 87 * Allocate a softc for this card and 88 * set it up for attachment by our 89 * common detect routine. 90 */ 91 name = malloc(strlen(device_get_nameunit(dev)) + 1, M_DEVBUF, M_NOWAIT); 92 if (name == NULL) 93 return (ENOMEM); 94 strcpy(name, device_get_nameunit(dev)); 95 ahc = ahc_alloc(NULL, name); 96 if (ahc == NULL) 97 return (ENOMEM); 98 99 /* Allocate a dmatag for our SCB DMA maps */ 100 /* XXX Should be a child of the PCI bus dma tag */ 101 error = bus_dma_tag_create(/*parent*/NULL, /*alignment*/1, 102 /*boundary*/0, 103 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 104 /*highaddr*/BUS_SPACE_MAXADDR, 105 /*filter*/NULL, /*filterarg*/NULL, 106 /*maxsize*/MAXBSIZE, /*nsegments*/AHC_NSEG, 107 /*maxsegsz*/AHC_MAXTRANSFER_SIZE, 108 /*flags*/BUS_DMA_ALLOCNOW, 109 &ahc->parent_dmat); 110 111 if (error != 0) { 112 printf("ahc_pci_attach: Could not allocate DMA tag " 113 "- error %d\n", error); 114 ahc_free(ahc); 115 return (ENOMEM); 116 } 117 ahc->dev_softc = dev; 118 error = ahc_pci_config(ahc, entry); 119 if (error != 0) { 120 ahc_free(ahc); 121 return (error); 122 } 123 124 ahc_attach(ahc); 125 return (0); 126 } 127 128 int 129 ahc_pci_map_registers(struct ahc_softc *ahc) 130 { 131 struct resource *regs; 132 u_int command; 133 int regs_type; 134 int regs_id; 135 136 command = ahc_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/1); 137 regs = NULL; 138 regs_type = 0; 139 regs_id = 0; 140 #ifdef AHC_ALLOW_MEMIO 141 if ((command & PCIM_CMD_MEMEN) != 0) { 142 regs_type = SYS_RES_MEMORY; 143 regs_id = AHC_PCI_MEMADDR; 144 regs = bus_alloc_resource(ahc->dev_softc, regs_type, 145 ®s_id, 0, ~0, 1, RF_ACTIVE); 146 if (regs != NULL) { 147 ahc->tag = rman_get_bustag(regs); 148 ahc->bsh = rman_get_bushandle(regs); 149 150 /* 151 * Do a quick test to see if memory mapped 152 * I/O is functioning correctly. 153 */ 154 if (ahc_inb(ahc, HCNTRL) == 0xFF) { 155 device_printf(ahc->dev_softc, 156 "PCI Device %d:%d:%d failed memory " 157 "mapped test. Using PIO.\n", 158 ahc_get_pci_bus(ahc->dev_softc), 159 ahc_get_pci_slot(ahc->dev_softc), 160 ahc_get_pci_function(ahc->dev_softc)); 161 bus_release_resource(ahc->dev_softc, regs_type, 162 regs_id, regs); 163 regs = NULL; 164 } 165 } 166 } 167 #endif 168 if (regs == NULL && (command & PCIM_CMD_PORTEN) != 0) { 169 regs_type = SYS_RES_IOPORT; 170 regs_id = AHC_PCI_IOADDR; 171 regs = bus_alloc_resource(ahc->dev_softc, regs_type, 172 ®s_id, 0, ~0, 1, RF_ACTIVE); 173 ahc->tag = rman_get_bustag(regs); 174 ahc->bsh = rman_get_bushandle(regs); 175 } 176 ahc->platform_data->regs_res_type = regs_type; 177 ahc->platform_data->regs_res_id = regs_id; 178 ahc->platform_data->regs = regs; 179 180 if (regs == NULL) { 181 device_printf(ahc->dev_softc, 182 "can't allocate register resources\n"); 183 return (ENOMEM); 184 } 185 return (0); 186 } 187 188 int 189 ahc_pci_map_int(struct ahc_softc *ahc) 190 { 191 int zero; 192 193 zero = 0; 194 ahc->platform_data->irq = 195 bus_alloc_resource(ahc->dev_softc, SYS_RES_IRQ, &zero, 196 0, ~0, 1, RF_ACTIVE | RF_SHAREABLE); 197 if (ahc->platform_data->irq == NULL) 198 return (ENOMEM); 199 ahc->platform_data->irq_res_type = SYS_RES_IRQ; 200 return (0); 201 } 202