sbgbus.c revision 1.8
1 /* $NetBSD: sbgbus.c,v 1.8 2004/09/13 14:57:31 drochner 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. The "Broadcom Corporation" name may not be 19 * used to endorse or promote products derived from this software 20 * without the prior written permission of Broadcom Corporation. 21 * 22 * 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR IMPLIED 23 * WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF 24 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR 25 * NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM BE LIABLE 26 * FOR ANY DAMAGES WHATSOEVER, AND IN PARTICULAR, BROADCOM SHALL NOT BE 27 * LIABLE FOR DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 30 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 31 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 32 * OR OTHERWISE), EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: sbgbus.c,v 1.8 2004/09/13 14:57:31 drochner Exp $"); 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/device.h> 41 42 #include <machine/locore.h> 43 #include <machine/sb1250/sb1250_regs.h> 44 #include <machine/sb1250/sb1250_genbus.h> 45 #include <sbmips/dev/sbobio/sbobiovar.h> 46 #include <sbmips/dev/sbgbus/sbgbusvar.h> 47 48 extern struct cfdriver sbgbus_cd; 49 50 static int sbgbus_match(struct device *, struct cfdata *, void *); 51 static void sbgbus_attach(struct device *, struct device *, void *); 52 53 CFATTACH_DECL(sbgbus, sizeof(struct device), 54 sbgbus_match, sbgbus_attach, NULL, NULL); 55 56 static int sbgbussearch(struct device *, struct cfdata *, 57 const locdesc_t *, void *); 58 static int sbgbusprint(void *, const char *); 59 60 static int 61 sbgbus_match(struct device *parent, struct cfdata *match, void *aux) 62 { 63 struct sbobio_attach_args *sap = aux; 64 65 if (sap->sa_locs.sa_type != SBOBIO_DEVTYPE_GBUS) 66 return (0); 67 68 return 1; 69 } 70 71 static void 72 sbgbus_attach(struct device *parent, struct device *self, void *aux) 73 { 74 75 /* Configure children using indirect configuration. */ 76 config_search_ia(sbgbussearch, self, "sbgbus", NULL); 77 } 78 79 static int 80 sbgbusprint(void *aux, const char *pnp) 81 { 82 struct sbgbus_attach_args *sga = aux; 83 84 if (sga->sga_chipsel != SBGBUS_CHIPSEL_NONE) 85 aprint_normal(" chipsel %u", sga->sga_chipsel); 86 if (sga->sga_offset != 0) 87 aprint_normal(" offset 0x%x", sga->sga_offset); 88 if (sga->sga_intr[0] != SBGBUS_INTR_NONE) { 89 aprint_normal(" intr %u", sga->sga_intr[0]); 90 if (sga->sga_intr[1] != SBGBUS_INTR_NONE) { 91 aprint_normal(",%u", sga->sga_intr[1]); 92 } 93 } 94 return (UNCONF); 95 } 96 97 static int 98 sbgbussearch(struct device *parent, struct cfdata *cf, 99 const locdesc_t *ldesc, void *aux) 100 { 101 struct sbgbus_attach_args sga; 102 int tryagain; 103 104 do { 105 /* Fill in sga */ 106 sga.sga_chipsel = cf->cf_loc[SBGBUSCF_CHIPSEL]; 107 sga.sga_offset = cf->cf_loc[SBGBUSCF_OFFSET]; 108 sga.sga_intr[0] = cf->cf_loc[SBGBUSCF_INTR]; 109 sga.sga_intr[1] = cf->cf_loc[SBGBUSCF_INTR_1]; 110 111 /* Some quick sanity checks. */ 112 if (sga.sga_intr[0] == SBGBUS_INTR_NONE && 113 sga.sga_intr[1] != SBGBUS_INTR_NONE) { 114 /* XXX probably should print */ 115 return (0); 116 } 117 if (sga.sga_chipsel == SBGBUS_CHIPSEL_NONE && 118 sga.sga_offset != 0) { 119 /* XXX probably should print */ 120 return (0); 121 } 122 if (sga.sga_chipsel >= IO_EXT_CFG_COUNT) { 123 /* XXX probably should print */ 124 return (0); 125 } 126 127 /* XXX check for PCMCIA. */ 128 129 if (sga.sga_chipsel == SBGBUS_CHIPSEL_NONE) { 130 sga.sga_startphys = 0; 131 sga.sga_size = 0; 132 } else { 133 uint64_t rv; 134 135 rv = mips3_ld((void *)MIPS_PHYS_TO_KSEG1( 136 A_IO_EXT_CS_BASE(sga.sga_chipsel) + 137 R_IO_EXT_START_ADDR)); 138 sga.sga_startphys = (rv & M_IO_START_ADDR) << S_IO_ADDRBASE; 139 rv = mips3_ld((void *)MIPS_PHYS_TO_KSEG1( 140 A_IO_EXT_CS_BASE(sga.sga_chipsel) + 141 R_IO_EXT_MULT_SIZE)); 142 sga.sga_size = (rv & M_IO_MULT_SIZE) << S_IO_REGSIZE; 143 144 /* Make sure that region is enabled. */ 145 if (sga.sga_size == 0 || 146 sga.sga_startphys < A_PHYS_GENBUS || 147 sga.sga_startphys >= A_PHYS_GENBUS_END) 148 return (0); 149 150 /* Report to child only the space they can access. */ 151 if (sga.sga_startphys + sga.sga_size > A_PHYS_GENBUS_END) 152 sga.sga_size = A_PHYS_GENBUS_END - sga.sga_startphys; 153 } 154 155 tryagain = 0; 156 if (config_match(parent, cf, &sga) > 0) { 157 config_attach(parent, cf, &sga, sbgbusprint); 158 tryagain = (cf->cf_fstate == FSTATE_STAR); 159 } 160 } while (tryagain); 161 162 return (0); 163 } 164
Indexes created Sun Sep 28 07:09:56 GMT 2025