apbus.c revision 1.11.2.4
1 /* $NetBSD: apbus.c,v 1.11.2.4 2015/09/22 12:05:47 skrll Exp $ */ 2 3 /*- 4 * Copyright (c) 2014 Michael Lorenz 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 /* catch-all for on-chip peripherals */ 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: apbus.c,v 1.11.2.4 2015/09/22 12:05:47 skrll Exp $"); 33 34 #include "locators.h" 35 #define _MIPS_BUS_DMA_PRIVATE 36 37 #include <sys/param.h> 38 #include <sys/bus.h> 39 #include <sys/device.h> 40 #include <sys/extent.h> 41 #include <sys/systm.h> 42 43 #include <mips/ingenic/ingenic_var.h> 44 #include <mips/ingenic/ingenic_regs.h> 45 46 #include "opt_ingenic.h" 47 48 static int apbus_match(device_t, cfdata_t, void *); 49 static void apbus_attach(device_t, device_t, void *); 50 static int apbus_print(void *, const char *); 51 static void apbus_bus_mem_init(bus_space_tag_t, void *); 52 53 CFATTACH_DECL_NEW(apbus, 0, apbus_match, apbus_attach, NULL, NULL); 54 55 static struct mips_bus_space apbus_mbst; 56 bus_space_tag_t apbus_memt = NULL; 57 58 struct mips_bus_dma_tag apbus_dmat = { 59 ._bounce_alloc_hi = 0x10000000, 60 ._dmamap_ops = _BUS_DMAMAP_OPS_INITIALIZER, 61 ._dmamem_ops = _BUS_DMAMEM_OPS_INITIALIZER, 62 ._dmatag_ops = _BUS_DMATAG_OPS_INITIALIZER, 63 }; 64 65 typedef struct apbus_dev { 66 const char *name; /* driver name */ 67 bus_addr_t addr; /* base address */ 68 uint32_t irq; /* interrupt */ 69 uint32_t clk0; /* bit(s) in CLKGR0 */ 70 uint32_t clk1; /* bit(s) in CLKGR1 */ 71 uint32_t clkreg; /* CGU register */ 72 } apbus_dev_t; 73 74 static const apbus_dev_t apbus_devs[] = { 75 { "com", JZ_UART0, 51, CLK_UART0, 0, 0}, 76 { "com", JZ_UART1, 50, CLK_UART1, 0, 0}, 77 { "com", JZ_UART2, 49, CLK_UART2, 0, 0}, 78 { "com", JZ_UART3, 48, CLK_UART3, 0, 0}, 79 { "com", JZ_UART4, 34, 0, CLK_UART4, 0}, 80 { "dwctwo", JZ_DWC2_BASE, 21, CLK_OTG0 | CLK_UHC, CLK_OTG1, 0}, 81 { "ohci", JZ_OHCI_BASE, 5, CLK_UHC, 0, 0}, 82 { "ehci", JZ_EHCI_BASE, 20, CLK_UHC, 0, 0}, 83 { "dme", JZ_DME_BASE, -1, 0, 0, 0}, 84 { "jzgpio", JZ_GPIO_A_BASE, 17, 0, 0, 0}, 85 { "jzgpio", JZ_GPIO_B_BASE, 16, 0, 0, 0}, 86 { "jzgpio", JZ_GPIO_C_BASE, 15, 0, 0, 0}, 87 { "jzgpio", JZ_GPIO_D_BASE, 14, 0, 0, 0}, 88 { "jzgpio", JZ_GPIO_E_BASE, 13, 0, 0, 0}, 89 { "jzgpio", JZ_GPIO_F_BASE, 12, 0, 0, 0}, 90 { "jziic", JZ_SMB0_BASE, 60, CLK_SMB0, 0, 0}, 91 { "jziic", JZ_SMB1_BASE, 59, CLK_SMB1, 0, 0}, 92 { "jziic", JZ_SMB2_BASE, 58, CLK_SMB2, 0, 0}, 93 { "jziic", JZ_SMB3_BASE, 57, 0, CLK_SMB3, 0}, 94 { "jziic", JZ_SMB4_BASE, 56, 0, CLK_SMB4, 0}, 95 { "jzmmc", JZ_MSC0_BASE, 37, CLK_MSC0, 0, JZ_MSC0CDR}, 96 { "jzmmc", JZ_MSC1_BASE, 36, CLK_MSC1, 0, JZ_MSC1CDR}, 97 { "jzmmc", JZ_MSC2_BASE, 35, CLK_MSC2, 0, JZ_MSC2CDR}, 98 { "jzfb", JZ_LCDC0_BASE, 31, CLK_LCD, CLK_HDMI, 0}, 99 { "jzrng", JZ_RNG, -1, 0, 0, 0}, 100 { NULL, -1, -1, 0, 0, 0} 101 }; 102 103 void 104 apbus_init(void) 105 { 106 static bool done = false; 107 if (done) 108 return; 109 done = true; 110 111 apbus_bus_mem_init(&apbus_mbst, NULL); 112 apbus_memt = &apbus_mbst; 113 } 114 115 int 116 apbus_match(device_t parent, cfdata_t match, void *aux) 117 { 118 struct mainbusdev { 119 const char *md_name; 120 } *aa = aux; 121 if (strcmp(aa->md_name, "apbus") == 0) return 1; 122 return 0; 123 } 124 125 void 126 apbus_attach(device_t parent, device_t self, void *aux) 127 { 128 uint32_t reg, mpll, m, n, p, mclk, pclk, pdiv, cclk, cdiv; 129 aprint_normal("\n"); 130 131 /* should have been called early on */ 132 apbus_init(); 133 134 #ifdef INGENIC_DEBUG 135 printf("core ctrl: %08x\n", MFC0(12, 2)); 136 printf("core status: %08x\n", MFC0(12, 3)); 137 printf("REIM: %08x\n", MFC0(12, 4)); 138 printf("ID: %08x\n", MFC0(15, 1)); 139 #endif 140 /* assuming we're using MPLL */ 141 mpll = readreg(JZ_CPMPCR); 142 m = (mpll & JZ_PLLM_M) >> JZ_PLLM_S; 143 n = (mpll & JZ_PLLN_M) >> JZ_PLLN_S; 144 p = (mpll & JZ_PLLP_M) >> JZ_PLLP_S; 145 146 /* assuming 48MHz EXTCLK */ 147 mclk = (48000 * (m + 1) / (n + 1)) / (p + 1); 148 149 reg = readreg(JZ_CPCCR); 150 pdiv = ((reg & JZ_PDIV_M) >> JZ_PDIV_S) + 1; 151 pclk = mclk / pdiv; 152 cdiv = (reg & JZ_CDIV_M) + 1; 153 cclk = mclk / cdiv; 154 155 aprint_debug_dev(self, "mclk %d kHz\n", mclk); 156 aprint_debug_dev(self, "pclk %d kHz\n", pclk); 157 aprint_debug_dev(self, "CPU clock %d kHz\n", cclk); 158 159 /* enable clocks */ 160 reg = readreg(JZ_CLKGR1); 161 reg &= ~CLK_AHB_MON; /* AHB_MON clock */ 162 writereg(JZ_CLKGR1, reg); 163 164 /* enable RNG */ 165 writereg(JZ_ERNG, 1); 166 167 /* wake up the USB part */ 168 reg = readreg(JZ_OPCR); 169 reg |= OPCR_SPENDN0 | OPCR_SPENDN1; 170 writereg(JZ_OPCR, reg); 171 172 /* wire up GPIOs */ 173 /* iic0 */ 174 gpio_as_dev0(3, 30); 175 gpio_as_dev0(3, 31); 176 /* iic1 */ 177 gpio_as_dev0(4, 30); 178 gpio_as_dev0(4, 31); 179 /* iic2 */ 180 gpio_as_dev2(5, 16); 181 gpio_as_dev2(5, 17); 182 /* iic3 */ 183 gpio_as_dev1(3, 10); 184 gpio_as_dev1(3, 11); 185 /* iic4 */ 186 /* make sure these aren't SMB4 */ 187 gpio_as_dev3(4, 3); 188 gpio_as_dev3(4, 4); 189 /* these are supposed to be connected to the RTC */ 190 gpio_as_dev1(4, 12); 191 gpio_as_dev1(4, 13); 192 /* these can be DDC2 or SMB4 */ 193 #if 0 194 /* DDC2 devices show up at SMB4 */ 195 gpio_as_dev1(5, 24); 196 gpio_as_dev1(5, 25); 197 #else 198 gpio_as_dev0(5, 24); 199 gpio_as_dev0(5, 25); 200 #endif 201 /* MSC0 */ 202 gpio_as_dev1(0, 4); 203 gpio_as_dev1(0, 5); 204 gpio_as_dev1(0, 6); 205 gpio_as_dev1(0, 7); 206 gpio_as_dev1(0, 18); 207 gpio_as_dev1(0, 19); 208 gpio_as_dev1(0, 20); 209 gpio_as_dev1(0, 21); 210 gpio_as_dev1(0, 22); 211 gpio_as_dev1(0, 23); 212 gpio_as_dev1(0, 24); 213 gpio_as_intr_level_low(5, 20); /* card detect */ 214 215 /* MSC1, for wifi/bt */ 216 gpio_as_dev0(3, 20); 217 gpio_as_dev0(3, 21); 218 gpio_as_dev0(3, 22); 219 gpio_as_dev0(3, 23); 220 gpio_as_dev0(3, 24); 221 gpio_as_dev0(3, 25); 222 223 /* MSC2, on expansion header */ 224 gpio_as_dev0(1, 20); 225 gpio_as_dev0(1, 21); 226 gpio_as_dev0(1, 28); 227 gpio_as_dev0(1, 29); 228 gpio_as_dev0(1, 30); 229 gpio_as_dev0(1, 31); 230 231 #ifndef INGENIC_DEBUG 232 printf("JZ_CLKGR0 %08x\n", readreg(JZ_CLKGR0)); 233 printf("JZ_CLKGR1 %08x\n", readreg(JZ_CLKGR1)); 234 printf("JZ_SPCR0 %08x\n", readreg(JZ_SPCR0)); 235 printf("JZ_SPCR1 %08x\n", readreg(JZ_SPCR1)); 236 printf("JZ_SRBC %08x\n", readreg(JZ_SRBC)); 237 printf("JZ_OPCR %08x\n", readreg(JZ_OPCR)); 238 printf("JZ_UHCCDR %08x\n", readreg(JZ_UHCCDR)); 239 printf("JZ_ERNG %08x\n", readreg(JZ_ERNG)); 240 printf("JZ_RNG %08x\n", readreg(JZ_RNG)); 241 #endif 242 243 for (const apbus_dev_t *adv = apbus_devs; adv->name != NULL; adv++) { 244 struct apbus_attach_args aa; 245 aa.aa_name = adv->name; 246 aa.aa_addr = adv->addr; 247 aa.aa_irq = adv->irq; 248 aa.aa_dmat = &apbus_dmat; 249 aa.aa_bst = apbus_memt; 250 aa.aa_pclk = pclk; 251 aa.aa_mclk = mclk; 252 aa.aa_clockreg = adv->clkreg; 253 254 /* enable clocks as needed */ 255 if (adv->clk0 != 0) { 256 reg = readreg(JZ_CLKGR0); 257 reg &= ~adv->clk0; 258 writereg(JZ_CLKGR0, reg); 259 } 260 261 if (adv->clk1 != 0) { 262 reg = readreg(JZ_CLKGR1); 263 reg &= ~adv->clk1; 264 writereg(JZ_CLKGR1, reg); 265 } 266 267 (void) config_found_ia(self, "apbus", &aa, apbus_print); 268 } 269 } 270 271 int 272 apbus_print(void *aux, const char *pnp) 273 { 274 struct apbus_attach_args *aa = aux; 275 276 if (pnp) { 277 aprint_normal("%s at %s", aa->aa_name, pnp); 278 } 279 if (aa->aa_addr != -1) 280 aprint_normal(" addr 0x%" PRIxBUSADDR, aa->aa_addr); 281 if ((pnp == NULL) && (aa->aa_irq != -1)) 282 aprint_normal(" irq %d", aa->aa_irq); 283 return (UNCONF); 284 } 285 286 #define CHIP apbus 287 #define CHIP_MEM /* defined */ 288 #define CHIP_W1_BUS_START(v) 0x10000000UL 289 #define CHIP_W1_BUS_END(v) 0x20000000UL 290 #define CHIP_W1_SYS_START(v) 0x10000000UL 291 #define CHIP_W1_SYS_END(v) 0x20000000UL 292 293 #include <mips/mips/bus_space_alignstride_chipdep.c> 294
Indexes created Wed Oct 22 06:10:02 GMT 2025