elb.c revision 1.5
1 /* $NetBSD: elb.c,v 1.5 2005/12/11 12:17:12 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2003 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Juergen Hannken-Illjes. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: elb.c,v 1.5 2005/12/11 12:17:12 christos Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/conf.h> 44 #include <sys/device.h> 45 #include <sys/systm.h> 46 #include <sys/extent.h> 47 48 #include <machine/explora.h> 49 #define _POWERPC_BUS_DMA_PRIVATE 50 #include <machine/bus.h> 51 52 #include <powerpc/ibm4xx/dcr403cgx.h> 53 54 #include <evbppc/explora/dev/elbvar.h> 55 56 struct elb_dev { 57 const char *elb_name; 58 int elb_addr; 59 int elb_addr2; 60 int elb_irq; 61 bus_space_tag_t elb_bt; 62 }; 63 64 static int elb_match(struct device *, struct cfdata *, void *); 65 static void elb_attach(struct device *, struct device *, void *); 66 static int elb_print(void *, const char *); 67 68 static struct powerpc_bus_space elb_tag = { 69 _BUS_SPACE_LITTLE_ENDIAN | _BUS_SPACE_MEM_TYPE | 1, /* stride 1 */ 70 0x00000000, 71 BASE_PCKBC, 72 BASE_PCKBC + 0x6ff 73 }; 74 static char elb_ex_storage[EXTENT_FIXED_STORAGE_SIZE(8)] 75 __attribute__((aligned(8))); 76 static int elb_tag_init_done; 77 78 static struct powerpc_bus_space elb_fb_tag = { 79 _BUS_SPACE_LITTLE_ENDIAN | _BUS_SPACE_MEM_TYPE, 80 0x00000000, 81 BASE_FB, 82 BASE_FB2 + SIZE_FB - 1 83 }; 84 static char elbfb_ex_storage[EXTENT_FIXED_STORAGE_SIZE(8)] 85 __attribute__((aligned(8))); 86 static int elbfb_tag_init_done; 87 88 /* 89 * DMA struct, nothing special. 90 */ 91 static struct powerpc_bus_dma_tag elb_bus_dma_tag = { 92 0, /* _bounce_thresh */ 93 _bus_dmamap_create, 94 _bus_dmamap_destroy, 95 _bus_dmamap_load, 96 _bus_dmamap_load_mbuf, 97 _bus_dmamap_load_uio, 98 _bus_dmamap_load_raw, 99 _bus_dmamap_unload, 100 _bus_dmamap_sync, 101 _bus_dmamem_alloc, 102 _bus_dmamem_free, 103 _bus_dmamem_map, 104 _bus_dmamem_unmap, 105 _bus_dmamem_mmap, 106 _bus_dma_phys_to_bus_mem_generic, 107 _bus_dma_bus_mem_to_phys_generic, 108 }; 109 110 static struct elb_dev elb_devs[] = { 111 { "cpu", 0, 0, -1, NULL }, 112 { "pckbc", BASE_PCKBC, BASE_PCKBC2, 31, &elb_tag }, 113 { "com", BASE_COM, 0, 30, &elb_tag }, 114 { "lpt", BASE_LPT, 0, -1, &elb_tag }, 115 { "fb", BASE_FB, BASE_FB2, -1, &elb_fb_tag }, 116 { "le", BASE_LE, 0, 28, &elb_fb_tag }, 117 }; 118 119 CFATTACH_DECL(elb, sizeof(struct device), 120 elb_match, elb_attach, NULL, NULL); 121 122 /* 123 * Probe for the elb; always succeeds. 124 */ 125 static int 126 elb_match(struct device *parent, struct cfdata *cf, void *aux) 127 { 128 return (1); 129 } 130 131 /* 132 * Attach the Explora local bus. 133 */ 134 static void 135 elb_attach(struct device *parent, struct device *self, void *aux) 136 { 137 struct elb_attach_args eaa; 138 int i; 139 140 printf("\n"); 141 for (i = 0; i < sizeof(elb_devs)/sizeof(elb_devs[0]); i++) { 142 eaa.elb_name = elb_devs[i].elb_name; 143 eaa.elb_bt = elb_get_bus_space_tag(elb_devs[i].elb_addr); 144 eaa.elb_dmat = &elb_bus_dma_tag; 145 eaa.elb_base = elb_devs[i].elb_addr; 146 eaa.elb_base2 = elb_devs[i].elb_addr2; 147 eaa.elb_irq = elb_devs[i].elb_irq; 148 149 (void) config_found(self, &eaa, elb_print); 150 } 151 } 152 153 static int 154 elb_print(void *aux, const char *pnp) 155 { 156 struct elb_attach_args *eaa = aux; 157 158 if (pnp) 159 aprint_normal("%s at %s", eaa->elb_name, pnp); 160 if (eaa->elb_irq != -1) 161 aprint_normal(" irq %d", eaa->elb_irq); 162 163 return (UNCONF); 164 } 165 166 bus_space_tag_t 167 elb_get_bus_space_tag(bus_addr_t addr) 168 { 169 170 if ((addr & 0xff000000) == 0x74000000) { 171 if (!elb_tag_init_done) { 172 if (bus_space_init(&elb_tag, "elbtag", 173 elb_ex_storage, sizeof(elb_ex_storage))) 174 panic("elb_get_bus_space_tag: elb_tag"); 175 176 elb_tag_init_done = 1; 177 } 178 return (&elb_tag); 179 } else { 180 if (!elbfb_tag_init_done) { 181 if (bus_space_init(&elb_fb_tag, "elbfbtag", 182 elbfb_ex_storage, sizeof(elbfb_ex_storage))) 183 panic("elb_get_bus_space_tag: elb_fb_tag"); 184 185 elbfb_tag_init_done = 1; 186 } 187 return (&elb_fb_tag); 188 } 189 } 190
Indexes created Sun Sep 21 20:09:37 GMT 2025