sbgbus.c revision 1.2
1 /* $NetBSD: sbgbus.c,v 1.2 2002/09/27 03:17:59 thorpej Exp $ */ 2 3 /* 4 * Copyright 2000, 2001 5 * Broadcom Corporation. All rights reserved. 6 * 7 * This software is furnished under license and may be used and copied only 8 * in accordance with the following terms and conditions. Subject to these 9 * conditions, you may download, copy, install, use, modify and distribute 10 * modified or unmodified copies of this software in source and/or binary 11 * form. No title or ownership is transferred hereby. 12 * 13 * 1) Any source code used, modified or distributed must reproduce and 14 * retain this copyright notice and list of conditions as they appear in 15 * the source file. 16 * 17 * 2) No right is granted to use any trade name, trademark, or logo of 18 * Broadcom Corporation. Neither the "Broadcom Corporation" name nor any 19 * trademark or logo of Broadcom Corporation may be used to endorse or 20 * promote products derived from this software without the prior written 21 * permission of Broadcom Corporation. 22 * 23 * 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR IMPLIED 24 * WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR 26 * NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM BE LIABLE 27 * FOR ANY DAMAGES WHATSOEVER, AND IN PARTICULAR, BROADCOM SHALL NOT BE 28 * LIABLE FOR DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 31 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 32 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 33 * OR OTHERWISE), EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/device.h> 39 40 #include <machine/locore.h> 41 #include <machine/sb1250/sb1250_regs.h> 42 #include <machine/sb1250/sb1250_genbus.h> 43 #include <sbmips/dev/sbobio/sbobiovar.h> 44 #include <sbmips/dev/sbgbus/sbgbusvar.h> 45 46 extern struct cfdriver sbgbus_cd; 47 48 static int sbgbus_match(struct device *, struct cfdata *, void *); 49 static void sbgbus_attach(struct device *, struct device *, void *); 50 51 const struct cfattach sbgbus_ca = { 52 sizeof(struct device), sbgbus_match, sbgbus_attach, 53 }; 54 55 static int sbgbussearch(struct device *, struct cfdata *, void *); 56 static int sbgbusprint(void *, const char *); 57 58 static int 59 sbgbus_match(struct device *parent, struct cfdata *match, void *aux) 60 { 61 struct sbobio_attach_args *sap = aux; 62 63 if (sap->sa_locs.sa_type != SBOBIO_DEVTYPE_GBUS) 64 return (0); 65 66 return 1; 67 } 68 69 static void 70 sbgbus_attach(struct device *parent, struct device *self, void *aux) 71 { 72 73 /* Configure children using indirect configuration. */ 74 config_search(sbgbussearch, self, NULL); 75 } 76 77 static int 78 sbgbusprint(void *aux, const char *pnp) 79 { 80 struct sbgbus_attach_args *sga = aux; 81 82 if (sga->sga_chipsel != SBGBUS_CHIPSEL_NONE) 83 printf(" chipsel %u", sga->sga_chipsel); 84 if (sga->sga_offset != 0) 85 printf(" offset 0x%x", sga->sga_offset); 86 if (sga->sga_intr[0] != SBGBUS_INTR_NONE) { 87 printf(" intr %u", sga->sga_intr[0]); 88 if (sga->sga_intr[1] != SBGBUS_INTR_NONE) { 89 printf(",%u", sga->sga_intr[1]); 90 } 91 } 92 return (UNCONF); 93 } 94 95 static int 96 sbgbussearch(struct device *parent, struct cfdata *cf, void *aux) 97 { 98 struct sbgbus_attach_args sga; 99 int tryagain; 100 101 do { 102 /* Fill in sga */ 103 sga.sga_chipsel = cf->cf_loc[SBGBUSCF_CHIPSEL]; 104 sga.sga_offset = cf->cf_loc[SBGBUSCF_OFFSET]; 105 sga.sga_intr[0] = cf->cf_loc[SBGBUSCF_INTR]; 106 sga.sga_intr[1] = cf->cf_loc[SBGBUSCF_INTR_1]; 107 108 /* Some quick sanity checks. */ 109 if (sga.sga_intr[0] == SBGBUS_INTR_NONE && 110 sga.sga_intr[1] != SBGBUS_INTR_NONE) { 111 /* XXX probably should print */ 112 return (0); 113 } 114 if (sga.sga_chipsel == SBGBUS_CHIPSEL_NONE && 115 sga.sga_offset != 0) { 116 /* XXX probably should print */ 117 return (0); 118 } 119 if (sga.sga_chipsel >= IO_EXT_CFG_COUNT) { 120 /* XXX probably should print */ 121 return (0); 122 } 123 124 /* XXX check for PCMCIA. */ 125 126 if (sga.sga_chipsel == SBGBUS_CHIPSEL_NONE) { 127 sga.sga_startphys = 0; 128 sga.sga_size = 0; 129 } else { 130 uint64_t rv; 131 132 rv = mips3_ld((void *)MIPS_PHYS_TO_KSEG1( 133 A_IO_EXT_CS_BASE(sga.sga_chipsel) + 134 R_IO_EXT_START_ADDR)); 135 sga.sga_startphys = (rv & M_IO_START_ADDR) << S_IO_ADDRBASE; 136 rv = mips3_ld((void *)MIPS_PHYS_TO_KSEG1( 137 A_IO_EXT_CS_BASE(sga.sga_chipsel) + 138 R_IO_EXT_MULT_SIZE)); 139 sga.sga_size = (rv & M_IO_MULT_SIZE) << S_IO_REGSIZE; 140 141 /* Make sure that region is enabled. */ 142 if (sga.sga_size == 0 || 143 sga.sga_startphys < A_PHYS_GENBUS || 144 sga.sga_startphys >= A_PHYS_GENBUS_END) 145 return (0); 146 147 /* Report to child only the space they can access. */ 148 if (sga.sga_startphys + sga.sga_size > A_PHYS_GENBUS_END) 149 sga.sga_size = A_PHYS_GENBUS_END - sga.sga_startphys; 150 } 151 152 tryagain = 0; 153 if (config_match(parent, cf, &sga) > 0) { 154 config_attach(parent, cf, &sga, sbgbusprint); 155 tryagain = (cf->cf_fstate == FSTATE_STAR); 156 } 157 } while (tryagain); 158 159 return (0); 160 } 161
Indexes created Sun Sep 28 16:09:52 GMT 2025