epsoc.c revision 1.7
1 /* $NetBSD: epsoc.c,v 1.7 2008/04/28 20:23:14 martin Exp $ */ 2 3 /* 4 * Copyright (c) 2004 Jesse Off 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 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: epsoc.c,v 1.7 2008/04/28 20:23:14 martin Exp $"); 31 32 #include <sys/types.h> 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/kernel.h> 36 #include <sys/time.h> 37 #include <sys/device.h> 38 39 #include <machine/bus.h> 40 #include <machine/intr.h> 41 42 #include <arm/cpufunc.h> 43 44 #include <arm/ep93xx/ep93xxreg.h> 45 #include <arm/ep93xx/ep93xxvar.h> 46 #include <arm/ep93xx/epsocvar.h> 47 48 #include "locators.h" 49 50 static int epsoc_match(struct device *, struct cfdata *, void *); 51 static void epsoc_attach(struct device *, struct device *, void *); 52 static int epsoc_search(struct device *, struct cfdata *, 53 const int *, void *); 54 static int epsoc_print(void *, const char *); 55 static int epsoc_submatch(struct device *, struct cfdata *, 56 const int *, void *); 57 58 CFATTACH_DECL(epsoc, sizeof(struct epsoc_softc), 59 epsoc_match, epsoc_attach, NULL, NULL); 60 61 struct epsoc_softc *epsoc_sc = NULL; 62 63 static int 64 epsoc_match(struct device *parent, struct cfdata *match, void *aux) 65 { 66 bus_space_handle_t ioh; 67 u_int32_t id, ret = 0; 68 69 bus_space_map(&ep93xx_bs_tag, EP93XX_APB_HWBASE + EP93XX_APB_SYSCON, 70 EP93XX_APB_SYSCON_SIZE, 0, &ioh); 71 id = bus_space_read_4(&ep93xx_bs_tag, ioh, EP93XX_SYSCON_ChipID); 72 if ((id & 0x01faffff) == 0x9213) ret = 1; 73 bus_space_unmap(&ep93xx_bs_tag, ioh, EP93XX_APB_SYSCON_SIZE); 74 return ret; 75 } 76 77 static void 78 epsoc_attach(struct device *parent, struct device *self, void *aux) 79 { 80 struct epsoc_softc *sc; 81 u_int64_t fclk, pclk, hclk; 82 u_int32_t id, clkset1; 83 const char *rev; 84 int locs[EPSOCCF_NLOCS]; 85 struct epsoc_attach_args sa; 86 87 sc = (struct epsoc_softc*) self; 88 89 if (epsoc_sc == NULL) 90 epsoc_sc = sc; 91 92 sc->sc_iot = &ep93xx_bs_tag; 93 bus_space_map(sc->sc_iot, EP93XX_APB_HWBASE + EP93XX_APB_SYSCON, 94 EP93XX_APB_SYSCON_SIZE, 0, &sc->sc_ioh); 95 id = bus_space_read_4(sc->sc_iot, sc->sc_ioh, EP93XX_SYSCON_ChipID); 96 switch(id >> 28) { 97 case 0: 98 rev = "A"; 99 break; 100 case 1: 101 rev = "B"; 102 break; 103 case 2: 104 rev = "C"; 105 break; 106 case 3: 107 rev = "D0"; 108 break; 109 case 4: 110 rev = "D1"; 111 break; 112 case 5: 113 rev = "E0"; 114 break; 115 case 6: 116 rev = "E1"; 117 break; 118 default: 119 rev = ">E1"; 120 break; 121 } 122 printf(": Cirrus Logic EP93xx SoC rev %s\n", rev); 123 124 clkset1 = bus_space_read_4(sc->sc_iot, sc->sc_ioh, 125 EP93XX_SYSCON_ClkSet1); 126 { 127 int fclkdiv, hclkdiv, pclkdiv, pll1_ps; 128 int pll1x1fbd1, pll1x2fbd2, pll1x2ipd; 129 int hclkdivisors[] = {1, 2, 4, 5, 6, 8, 16, 32}; 130 131 fclkdiv = (clkset1 & 0x0e000000) >> 25; 132 hclkdiv = (clkset1 & 0x00700000) >> 20; 133 pclkdiv = (clkset1 & 0x000c0000) >> 18; 134 pll1_ps = (clkset1 & 0x00030000) >> 16; 135 pll1x1fbd1 = (clkset1 & 0x0000f800) >> 11; 136 pll1x2fbd2 = (clkset1 & 0x000007e0) >> 5; 137 pll1x2ipd = (clkset1 & 0x0000001f); 138 fclk = 14745600ULL * ((pll1x1fbd1 + 1) * (pll1x2fbd2 + 1)) / 139 ((pll1x2ipd + 1) * (1 << pll1_ps)); 140 hclk = fclk / hclkdivisors[hclkdiv]; 141 pclk = hclk >> pclkdiv; 142 if (fclkdiv > 4) fclkdiv = 0; 143 if (clkset1 & 0x00800000) /* nBYP1 bypasses PLL */ 144 fclk = fclk >> fclkdiv; 145 else 146 fclk = 14745600ULL; 147 } 148 printf("%s: fclk %lld.%02lld MHz hclk %lld.%02lld MHz pclk %lld.%02lld MHz\n", 149 sc->sc_dev.dv_xname, 150 fclk / 1000000, (fclk % 1000000 + 5000) / 10000, 151 hclk / 1000000, (hclk % 1000000 + 5000) / 10000, 152 pclk / 1000000, (pclk % 1000000 + 5000) / 10000); 153 154 sc->sc_fclk = fclk; 155 sc->sc_hclk = hclk; 156 sc->sc_pclk = pclk; 157 158 /* get busdma tag for the platform */ 159 sc->sc_dmat = ep93xx_bus_dma_init(&ep93xx_bus_dma); 160 161 /* 162 * Attach each devices 163 * some device is used by other system device. so attach first. 164 */ 165 sa.sa_iot = sc->sc_iot; 166 sa.sa_dmat = sc->sc_dmat; 167 sa.sa_hclk = sc->sc_hclk; 168 sa.sa_pclk = sc->sc_pclk; 169 locs[EPSOCCF_ADDR] = EP93XX_APB_HWBASE + EP93XX_APB_TIMERS; 170 config_found_sm_loc(self, "epsoc", locs, &sa, 171 epsoc_print, epsoc_submatch); 172 locs[EPSOCCF_ADDR] = EP93XX_APB_HWBASE + EP93XX_APB_GPIO; 173 sa.sa_gpio = (struct epgpio_softc *) 174 config_found_sm_loc(self, "epsoc", locs, &sa, 175 epsoc_print, epsoc_submatch); 176 config_search_ia(epsoc_search, self, "epsoc", &sa); 177 178 } 179 180 int 181 epsoc_submatch(parent, cf, ldesc, aux) 182 struct device *parent; 183 struct cfdata *cf; 184 const int *ldesc; 185 void *aux; 186 { 187 struct epsoc_attach_args *sa = aux; 188 189 if (cf->cf_loc[EPSOCCF_ADDR] == ldesc[EPSOCCF_ADDR]) { 190 sa->sa_addr = cf->cf_loc[EPSOCCF_ADDR]; 191 sa->sa_size = cf->cf_loc[EPSOCCF_SIZE]; 192 sa->sa_intr = cf->cf_loc[EPSOCCF_INTR]; 193 return (config_match(parent, cf, aux)); 194 } else 195 return (0); 196 } 197 198 int 199 epsoc_search(parent, cf, ldesc, aux) 200 struct device *parent; 201 struct cfdata *cf; 202 const int *ldesc; 203 void *aux; 204 { 205 struct epsoc_attach_args *sa = aux; 206 207 sa->sa_addr = cf->cf_loc[EPSOCCF_ADDR]; 208 sa->sa_size = cf->cf_loc[EPSOCCF_SIZE]; 209 sa->sa_intr = cf->cf_loc[EPSOCCF_INTR]; 210 211 if (config_match(parent, cf, aux) > 0) 212 config_attach(parent, cf, aux, epsoc_print); 213 214 return (0); 215 } 216 217 static int 218 epsoc_print(aux, name) 219 void *aux; 220 const char *name; 221 { 222 struct epsoc_attach_args *sa = (struct epsoc_attach_args*)aux; 223 224 if (sa->sa_size) 225 aprint_normal(" addr 0x%lx", sa->sa_addr); 226 if (sa->sa_size > 1) 227 aprint_normal("-0x%lx", sa->sa_addr + sa->sa_size - 1); 228 if (sa->sa_intr > 1) 229 aprint_normal(" intr %d", sa->sa_intr); 230 231 return (UNCONF); 232 } 233
Indexes created Wed Sep 24 02:09:48 GMT 2025