rtwphyio.c revision 1.1
1 /* $NetBSD: rtwphyio.c,v 1.1 2004/09/26 02:29:15 dyoung Exp $ */ 2 /*- 3 * Copyright (c) 2004, 2005 David Young. All rights reserved. 4 * 5 * Programmed for NetBSD by David Young. 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 * 3. The name of David Young may not be used to endorse or promote 16 * products derived from this software without specific prior 17 * written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY David Young ``AS IS'' AND ANY 20 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 22 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL David 23 * Young BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 25 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 27 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 28 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 30 * OF SUCH DAMAGE. 31 */ 32 /* 33 * Control input/output with the Philips SA2400 RF front-end and 34 * the baseband processor built into the Realtek RTL8180. 35 */ 36 37 #include <sys/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: rtwphyio.c,v 1.1 2004/09/26 02:29:15 dyoung Exp $"); 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/types.h> 43 44 #include <machine/bus.h> 45 46 #include <net/if.h> 47 #include <net/if_media.h> 48 #include <net/if_ether.h> 49 50 #include <net80211/ieee80211_var.h> 51 #include <net80211/ieee80211_compat.h> 52 #include <net80211/ieee80211_radiotap.h> 53 54 #include <dev/ic/rtwreg.h> 55 #include <dev/ic/max2820reg.h> 56 #include <dev/ic/sa2400reg.h> 57 #include <dev/ic/si4136reg.h> 58 #include <dev/ic/rtwvar.h> 59 #include <dev/ic/rtwphyio.h> 60 #include <dev/ic/rtwphy.h> 61 62 static int rtw_macbangbits_timeout = 100; 63 64 u_int8_t 65 rtw_bbp_read(struct rtw_regs *regs, u_int addr) 66 { 67 KASSERT((addr & ~PRESHIFT(RTW_BB_ADDR_MASK)) == 0); 68 RTW_WRITE(regs, RTW_BB, 69 LSHIFT(addr, RTW_BB_ADDR_MASK) | RTW_BB_RD_MASK | RTW_BB_WR_MASK); 70 delay(10); /* XXX */ 71 RTW_WBR(regs, RTW_BB, RTW_BB); 72 return MASK_AND_RSHIFT(RTW_READ(regs, RTW_BB), RTW_BB_RD_MASK); 73 } 74 75 int 76 rtw_bbp_write(struct rtw_regs *regs, u_int addr, u_int val) 77 { 78 #define BBP_WRITE_ITERS 50 79 #define BBP_WRITE_DELAY 1 80 int i; 81 uint32_t wrbbp, rdbbp; 82 83 RTW_DPRINTF(("%s: bbp[%u] <- %u\n", __func__, addr, val)); 84 85 KASSERT((addr & ~PRESHIFT(RTW_BB_ADDR_MASK)) == 0); 86 KASSERT((val & ~PRESHIFT(RTW_BB_WR_MASK)) == 0); 87 88 wrbbp = LSHIFT(addr, RTW_BB_ADDR_MASK) | RTW_BB_WREN | 89 LSHIFT(val, RTW_BB_WR_MASK) | RTW_BB_RD_MASK, 90 91 rdbbp = LSHIFT(addr, RTW_BB_ADDR_MASK) | 92 RTW_BB_WR_MASK | RTW_BB_RD_MASK; 93 94 RTW_DPRINTF2(("%s: rdbbp = %#08x, wrbbp = %#08x\n", __func__, 95 rdbbp, wrbbp)); 96 97 for (i = BBP_WRITE_ITERS; --i >= 0; ) { 98 RTW_RBW(regs, RTW_BB, RTW_BB); 99 RTW_WRITE(regs, RTW_BB, wrbbp); 100 RTW_SYNC(regs, RTW_BB, RTW_BB); 101 RTW_WRITE(regs, RTW_BB, rdbbp); 102 RTW_SYNC(regs, RTW_BB, RTW_BB); 103 delay(BBP_WRITE_DELAY); /* 1 microsecond */ 104 if (MASK_AND_RSHIFT(RTW_READ(regs, RTW_BB), 105 RTW_BB_RD_MASK) == val) { 106 RTW_DPRINTF2(("%s: finished in %dus\n", __func__, 107 BBP_WRITE_DELAY * (BBP_WRITE_ITERS - i))); 108 return 0; 109 } 110 delay(BBP_WRITE_DELAY); /* again */ 111 } 112 printf("%s: timeout\n", __func__); 113 return -1; 114 } 115 116 /* Help rtw_rf_hostwrite bang bits to RF over 3-wire interface. */ 117 static __inline void 118 rtw_rf_hostbangbits(struct rtw_regs *regs, u_int32_t bits, int lo_to_hi, 119 u_int nbits) 120 { 121 int i; 122 u_int32_t mask, reg; 123 124 KASSERT(nbits <= 32); 125 126 RTW_DPRINTF(("%s: %u bits, %#08x, %s\n", __func__, nbits, bits, 127 (lo_to_hi) ? "lo to hi" : "hi to lo")); 128 129 reg = RTW_PHYCFG_HST; 130 RTW_WRITE(regs, RTW_PHYCFG, reg); 131 RTW_SYNC(regs, RTW_PHYCFG, RTW_PHYCFG); 132 133 if (lo_to_hi) 134 mask = 0x1; 135 else 136 mask = 1 << (nbits - 1); 137 138 for (i = 0; i < nbits; i++) { 139 RTW_DPRINTF2(("%s: bits %#08x mask %#08x -> bit %#08x\n", 140 __func__, bits, mask, bits & mask)); 141 142 if ((bits & mask) != 0) 143 reg |= RTW_PHYCFG_HST_DATA; 144 else 145 reg &= ~RTW_PHYCFG_HST_DATA; 146 147 reg |= RTW_PHYCFG_HST_CLK; 148 RTW_WRITE(regs, RTW_PHYCFG, reg); 149 RTW_SYNC(regs, RTW_PHYCFG, RTW_PHYCFG); 150 151 DELAY(2); /* arbitrary delay */ 152 153 reg &= ~RTW_PHYCFG_HST_CLK; 154 RTW_WRITE(regs, RTW_PHYCFG, reg); 155 RTW_SYNC(regs, RTW_PHYCFG, RTW_PHYCFG); 156 157 if (lo_to_hi) 158 mask <<= 1; 159 else 160 mask >>= 1; 161 } 162 163 reg |= RTW_PHYCFG_HST_EN; 164 KASSERT((reg & RTW_PHYCFG_HST_CLK) == 0); 165 RTW_WRITE(regs, RTW_PHYCFG, reg); 166 RTW_SYNC(regs, RTW_PHYCFG, RTW_PHYCFG); 167 } 168 169 /* Help rtw_rf_macwrite: tell MAC to bang bits to RF over the 3-wire 170 * interface. 171 */ 172 static __inline int 173 rtw_rf_macbangbits(struct rtw_regs *regs, u_int32_t reg) 174 { 175 int i; 176 177 RTW_DPRINTF(("%s: %#08x\n", __func__, reg)); 178 179 RTW_WRITE(regs, RTW_PHYCFG, RTW_PHYCFG_MAC_POLL | reg); 180 181 RTW_WBR(regs, RTW_PHYCFG, RTW_PHYCFG); 182 for (i = rtw_macbangbits_timeout; --i >= 0; delay(1)) { 183 if ((RTW_READ(regs, RTW_PHYCFG) & RTW_PHYCFG_MAC_POLL) == 0) { 184 RTW_DPRINTF2(("%s: finished in %dus\n", __func__, 185 rtw_macbangbits_timeout - i)); 186 return 0; 187 } 188 RTW_RBR(regs, RTW_PHYCFG, RTW_PHYCFG); /* XXX paranoia? */ 189 } 190 191 printf("%s: RTW_PHYCFG_MAC_POLL still set.\n", __func__); 192 return -1; 193 } 194 195 static u_int32_t 196 rtw_grf5101_host_crypt(u_int addr, u_int32_t val) 197 { 198 /* TBD */ 199 return 0; 200 } 201 202 static u_int32_t 203 rtw_grf5101_mac_crypt(u_int addr, u_int32_t val) 204 { 205 u_int32_t data_and_addr; 206 #define EXTRACT_NIBBLE(d, which) (((d) >> (4 * (which))) & 0xf) 207 static u_int8_t caesar[16] = {0x0, 0x8, 0x4, 0xc, 208 0x2, 0xa, 0x6, 0xe, 209 0x1, 0x9, 0x5, 0xd, 210 0x3, 0xb, 0x7, 0xf}; 211 212 data_and_addr = caesar[EXTRACT_NIBBLE(val, 2)] | 213 (caesar[EXTRACT_NIBBLE(val, 1)] << 4) | 214 (caesar[EXTRACT_NIBBLE(val, 0)] << 8) | 215 (caesar[(addr >> 1) & 0xf] << 12) | 216 ((addr & 0x1) << 16) | 217 (caesar[EXTRACT_NIBBLE(val, 3)] << 24); 218 return LSHIFT(data_and_addr, 219 RTW_PHYCFG_MAC_PHILIPS_ADDR_MASK|RTW_PHYCFG_MAC_PHILIPS_DATA_MASK); 220 #undef EXTRACT_NIBBLE 221 } 222 223 static __inline const char * 224 rtw_rfchipid_string(enum rtw_rfchipid rfchipid) 225 { 226 switch (rfchipid) { 227 case RTW_RFCHIPID_MAXIM: 228 return "Maxim"; 229 case RTW_RFCHIPID_PHILIPS: 230 return "Philips"; 231 case RTW_RFCHIPID_GCT: 232 return "GCT"; 233 case RTW_RFCHIPID_RFMD: 234 return "RFMD"; 235 case RTW_RFCHIPID_INTERSIL: 236 return "Intersil"; 237 default: 238 return "unknown"; 239 } 240 } 241 242 /* Bang bits over the 3-wire interface. */ 243 int 244 rtw_rf_hostwrite(struct rtw_regs *regs, enum rtw_rfchipid rfchipid, 245 u_int addr, u_int32_t val) 246 { 247 u_int nbits; 248 int lo_to_hi; 249 u_int32_t bits; 250 251 RTW_DPRINTF(("%s: %s[%u] <- %#08x\n", __func__, 252 rtw_rfchipid_string(rfchipid), addr, val)); 253 254 switch (rfchipid) { 255 case RTW_RFCHIPID_MAXIM: 256 nbits = 16; 257 lo_to_hi = 0; 258 bits = LSHIFT(val, MAX2820_TWI_DATA_MASK) | 259 LSHIFT(addr, MAX2820_TWI_ADDR_MASK); 260 break; 261 case RTW_RFCHIPID_PHILIPS: 262 KASSERT((addr & ~PRESHIFT(SA2400_TWI_ADDR_MASK)) == 0); 263 KASSERT((val & ~PRESHIFT(SA2400_TWI_DATA_MASK)) == 0); 264 bits = LSHIFT(val, SA2400_TWI_DATA_MASK) | 265 LSHIFT(addr, SA2400_TWI_ADDR_MASK) | SA2400_TWI_WREN; 266 nbits = 32; 267 lo_to_hi = 1; 268 break; 269 case RTW_RFCHIPID_GCT: 270 case RTW_RFCHIPID_RFMD: 271 KASSERT((addr & ~PRESHIFT(SI4126_TWI_ADDR_MASK)) == 0); 272 KASSERT((val & ~PRESHIFT(SI4126_TWI_DATA_MASK)) == 0); 273 if (rfchipid == RTW_RFCHIPID_GCT) 274 bits = rtw_grf5101_host_crypt(addr, val); 275 else { 276 bits = LSHIFT(val, SI4126_TWI_DATA_MASK) | 277 LSHIFT(addr, SI4126_TWI_ADDR_MASK); 278 } 279 nbits = 22; 280 lo_to_hi = 0; 281 break; 282 case RTW_RFCHIPID_INTERSIL: 283 default: 284 printf("%s: unknown rfchipid %d\n", __func__, rfchipid); 285 return -1; 286 } 287 288 rtw_rf_hostbangbits(regs, bits, lo_to_hi, nbits); 289 290 return 0; 291 } 292 293 static uint32_t 294 rtw_maxim_swizzle(u_int addr, uint32_t val) 295 { 296 uint32_t hidata, lodata; 297 298 KASSERT((val & ~(RTW_MAXIM_LODATA_MASK|RTW_MAXIM_HIDATA_MASK)) == 0); 299 lodata = MASK_AND_RSHIFT(val, RTW_MAXIM_LODATA_MASK); 300 hidata = MASK_AND_RSHIFT(val, RTW_MAXIM_HIDATA_MASK); 301 return LSHIFT(lodata, RTW_PHYCFG_MAC_MAXIM_LODATA_MASK) | 302 LSHIFT(hidata, RTW_PHYCFG_MAC_MAXIM_HIDATA_MASK) | 303 LSHIFT(addr, RTW_PHYCFG_MAC_MAXIM_ADDR_MASK); 304 } 305 306 /* Tell the MAC what to bang over the 3-wire interface. */ 307 int 308 rtw_rf_macwrite(struct rtw_regs *regs, enum rtw_rfchipid rfchipid, 309 u_int addr, u_int32_t val) 310 { 311 uint32_t reg; 312 313 RTW_DPRINTF(("%s: %s[%u] <- %#08x\n", __func__, 314 rtw_rfchipid_string(rfchipid), addr, val)); 315 316 switch (rfchipid) { 317 case RTW_RFCHIPID_GCT: 318 reg = rtw_grf5101_mac_crypt(addr, val); 319 break; 320 case RTW_RFCHIPID_MAXIM: 321 reg = rtw_maxim_swizzle(addr, val); 322 break; 323 default: /* XXX */ 324 case RTW_RFCHIPID_PHILIPS: 325 KASSERT( 326 (addr & ~PRESHIFT(RTW_PHYCFG_MAC_PHILIPS_ADDR_MASK)) == 0); 327 KASSERT( 328 (val & ~PRESHIFT(RTW_PHYCFG_MAC_PHILIPS_DATA_MASK)) == 0); 329 330 reg = LSHIFT(addr, RTW_PHYCFG_MAC_PHILIPS_ADDR_MASK) | 331 LSHIFT(val, RTW_PHYCFG_MAC_PHILIPS_DATA_MASK); 332 } 333 334 switch (rfchipid) { 335 case RTW_RFCHIPID_GCT: 336 case RTW_RFCHIPID_MAXIM: 337 case RTW_RFCHIPID_RFMD: 338 reg |= RTW_PHYCFG_MAC_RFTYPE_RFMD; 339 break; 340 case RTW_RFCHIPID_INTERSIL: 341 reg |= RTW_PHYCFG_MAC_RFTYPE_INTERSIL; 342 break; 343 case RTW_RFCHIPID_PHILIPS: 344 reg |= RTW_PHYCFG_MAC_RFTYPE_PHILIPS; 345 break; 346 default: 347 printf("%s: unknown rfchipid %d\n", __func__, rfchipid); 348 return -1; 349 } 350 351 return rtw_rf_macbangbits(regs, reg); 352 } 353
Indexes created Thu Sep 25 16:09:42 GMT 2025