satapmp_subr.c revision 1.14
1 /* $NetBSD: satapmp_subr.c,v 1.14 2018/07/29 14:11:30 jdolecek Exp $ */ 2 3 /* 4 * Copyright (c) 2012 Manuel Bouyer. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __KERNEL_RCSID(0, "$NetBSD: satapmp_subr.c,v 1.14 2018/07/29 14:11:30 jdolecek Exp $"); 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/kernel.h> 33 #include <sys/device.h> 34 #include <sys/conf.h> 35 #include <sys/fcntl.h> 36 #include <sys/proc.h> 37 #include <sys/errno.h> 38 #include <sys/kmem.h> 39 #include <sys/intr.h> 40 41 #include <dev/ata/ataconf.h> 42 #include <dev/ata/atareg.h> 43 #include <dev/ata/atavar.h> 44 45 #include <dev/ata/satapmpvar.h> 46 #include <dev/ata/satapmpreg.h> 47 #include <dev/ata/satavar.h> 48 #include <dev/ata/satareg.h> 49 50 static int 51 satapmp_read_8(struct ata_channel *chp, int port, int reg, uint64_t *value, 52 struct ata_xfer *xfer) 53 { 54 struct atac_softc *atac = chp->ch_atac; 55 struct ata_drive_datas *drvp; 56 int error = 0; 57 58 KASSERT(port < PMP_MAX_DRIVES); 59 KASSERT(reg < PMP_GSCR_NREGS); 60 KASSERT(chp->ch_ndrives >= PMP_MAX_DRIVES); 61 drvp = &chp->ch_drive[PMP_PORT_CTL]; 62 KASSERT(drvp->drive == PMP_PORT_CTL); 63 ata_channel_lock_owned(chp); 64 65 xfer->c_ata_c.r_command = PMPC_READ_PORT; 66 xfer->c_ata_c.r_features = reg; 67 xfer->c_ata_c.r_device = port; 68 xfer->c_ata_c.timeout = 3000; /* 3s */ 69 xfer->c_ata_c.r_st_bmask = 0; 70 xfer->c_ata_c.r_st_pmask = WDCS_DRDY; 71 xfer->c_ata_c.flags = AT_LBA48 | AT_READREG | AT_WAIT; 72 73 ata_channel_unlock(chp); 74 if ((*atac->atac_bustype_ata->ata_exec_command)(drvp, 75 xfer) != ATACMD_COMPLETE) { 76 aprint_error_dev(chp->atabus, 77 "PMP port %d register %d read failed\n", port, reg); 78 error = EIO; 79 goto out; 80 } 81 if (xfer->c_ata_c.flags & (AT_TIMEOU | AT_DF)) { 82 aprint_error_dev(chp->atabus, 83 "PMP port %d register %d read failed, flags 0x%x\n", 84 port, reg, xfer->c_ata_c.flags); 85 error = EIO; 86 goto out; 87 } 88 if (xfer->c_ata_c.flags & AT_ERROR) { 89 aprint_verbose_dev(chp->atabus, 90 "PMP port %d register %d read failed, error 0x%x\n", 91 port, reg, xfer->c_ata_c.r_error); 92 error = EIO; 93 goto out; 94 } 95 96 *value = ((uint64_t)((xfer->c_ata_c.r_lba >> 24) & 0xffffff) << 40) | 97 ((uint64_t)((xfer->c_ata_c.r_count >> 8) & 0xff) << 32) | 98 ((uint64_t)((xfer->c_ata_c.r_lba >> 0) & 0xffffff) << 8) | 99 ((uint64_t)((xfer->c_ata_c.r_count >> 0) & 0xff) << 0); 100 101 out: 102 ata_channel_lock(chp); 103 return error; 104 } 105 106 static inline int 107 satapmp_read(struct ata_channel *chp, int port, int reg, uint32_t *value, 108 struct ata_xfer *xfer) 109 { 110 uint64_t value64; 111 int ret; 112 113 ret = satapmp_read_8(chp, port, reg, &value64, xfer); 114 if (ret) 115 return ret; 116 117 *value = value64 & 0xffffffff; 118 return ret; 119 } 120 121 static int 122 satapmp_write_8(struct ata_channel *chp, int port, int reg, uint64_t value, 123 struct ata_xfer *xfer) 124 { 125 struct atac_softc *atac = chp->ch_atac; 126 struct ata_drive_datas *drvp; 127 int error = 0; 128 129 KASSERT(port < PMP_MAX_DRIVES); 130 KASSERT(reg < PMP_GSCR_NREGS); 131 KASSERT(chp->ch_ndrives >= PMP_MAX_DRIVES); 132 drvp = &chp->ch_drive[PMP_PORT_CTL]; 133 KASSERT(drvp->drive == PMP_PORT_CTL); 134 ata_channel_lock_owned(chp); 135 136 xfer->c_ata_c.r_command = PMPC_WRITE_PORT; 137 xfer->c_ata_c.r_features = reg; 138 xfer->c_ata_c.r_device = port; 139 xfer->c_ata_c.r_lba = (((value >> 40) & 0xffffff) << 24) | 140 (((value >> 8) & 0xffffff) << 0); 141 xfer->c_ata_c.r_count = (((value >> 32) & 0xff) << 8) | 142 (((value >> 0) & 0xff) << 0); 143 xfer->c_ata_c.timeout = 3000; /* 3s */ 144 xfer->c_ata_c.r_st_bmask = 0; 145 xfer->c_ata_c.r_st_pmask = WDCS_DRDY; 146 xfer->c_ata_c.flags = AT_LBA48 | AT_WAIT; 147 148 ata_channel_unlock(chp); 149 if ((*atac->atac_bustype_ata->ata_exec_command)(drvp, 150 xfer) != ATACMD_COMPLETE) { 151 aprint_error_dev(chp->atabus, 152 "PMP port %d register %d write failed\n", port, reg); 153 error = EIO; 154 goto out; 155 } 156 if (xfer->c_ata_c.flags & (AT_TIMEOU | AT_DF)) { 157 aprint_error_dev(chp->atabus, 158 "PMP port %d register %d write failed, flags 0x%x\n", 159 port, reg, xfer->c_ata_c.flags); 160 error = EIO; 161 goto out; 162 } 163 if (xfer->c_ata_c.flags & AT_ERROR) { 164 aprint_verbose_dev(chp->atabus, 165 "PMP port %d register %d write failed, error 0x%x\n", 166 port, reg, xfer->c_ata_c.r_error); 167 error = EIO; 168 goto out; 169 } 170 171 out: 172 ata_channel_lock(chp); 173 return error; 174 } 175 176 static inline int 177 satapmp_write(struct ata_channel *chp, int port, int reg, uint32_t value, 178 struct ata_xfer *xfer) 179 { 180 return satapmp_write_8(chp, port, reg, value, xfer); 181 } 182 183 /* 184 * Reset one port's PHY and bring it online 185 * XXX duplicate of sata_reset_interface() 186 */ 187 static uint32_t 188 satapmp_reset_device_port(struct ata_channel *chp, int port, 189 struct ata_xfer *xfer) 190 { 191 uint32_t scontrol, sstatus; 192 int i; 193 194 ata_channel_lock_owned(chp); 195 196 /* bring the PHY online */ 197 scontrol = SControl_IPM_NONE | SControl_SPD_ANY | SControl_DET_INIT; 198 if (satapmp_write(chp, port, PMP_PSCR_SControl, scontrol, xfer) != 0) 199 return 0; 200 201 ata_delay(chp, 50, "sataup", AT_WAIT); 202 scontrol &= ~SControl_DET_INIT; 203 if (satapmp_write(chp, port, PMP_PSCR_SControl, scontrol, xfer) != 0) 204 return 0; 205 ata_delay(chp, 50, "sataup", AT_WAIT); 206 207 /* wait up to 1s for device to come up */ 208 for (i = 0; i < 100; i++) { 209 210 if (satapmp_read(chp, port, PMP_PSCR_SStatus, &sstatus, 211 xfer) != 0) 212 return 0; 213 if ((sstatus & SStatus_DET_mask) == SStatus_DET_DEV) 214 break; 215 ata_delay(chp, 10, "sataup", AT_WAIT); 216 } 217 218 switch (sstatus & SStatus_DET_mask) { 219 case SStatus_DET_NODEV: 220 /* No Device; be silent. */ 221 break; 222 case SStatus_DET_DEV_NE: 223 aprint_error("%s PMP port %d: device connected, but " 224 "communication not established\n", 225 device_xname(chp->atabus), port); 226 break; 227 case SStatus_DET_OFFLINE: 228 aprint_error("%s PMP port %d: PHY offline\n", 229 device_xname(chp->atabus), port); 230 break; 231 case SStatus_DET_DEV: 232 aprint_normal("%s PMP port %d: device present, speed: %s\n", 233 device_xname(chp->atabus), port, sata_speed(sstatus)); 234 break; 235 default: 236 aprint_error("%s PMP port %d: unknown SStatus: 0x%08x\n", 237 device_xname(chp->atabus), port, sstatus); 238 } 239 return(sstatus & SStatus_DET_mask); 240 } 241 242 static void __noinline 243 satapmp_rescan(struct ata_channel *chp, struct ata_xfer *xfer) 244 { 245 int i; 246 uint32_t sig; 247 248 KASSERT(chp->ch_satapmp_nports <= PMP_PORT_CTL); 249 KASSERT(chp->ch_satapmp_nports <= chp->ch_ndrives); 250 ata_channel_lock_owned(chp); 251 252 for (i = 0; i < chp->ch_satapmp_nports; i++) { 253 if (chp->ch_drive[i].drive_type != ATA_DRIVET_NONE || 254 satapmp_reset_device_port(chp, i, xfer) 255 != SStatus_DET_DEV) { 256 continue; 257 } 258 if (satapmp_write(chp, i, PMP_PSCR_SError, 0xffffffff, xfer) 259 != 0) { 260 aprint_error("%s PMP port %d: can't write SError\n", 261 device_xname(chp->atabus), i); 262 continue; 263 } 264 ata_channel_unlock(chp); 265 chp->ch_atac->atac_bustype_ata->ata_reset_drive( 266 &chp->ch_drive[i], AT_WAIT, &sig); 267 ata_channel_lock(chp); 268 269 sata_interpret_sig(chp, i, sig); 270 } 271 } 272 273 void 274 satapmp_attach(struct ata_channel *chp) 275 { 276 uint32_t id, rev, inf; 277 struct ata_xfer *xfer; 278 279 xfer = ata_get_xfer(chp); 280 if (xfer == NULL) { 281 aprint_normal_dev(chp->atabus, "no available xfer\n"); 282 return; 283 } 284 285 ata_channel_lock(chp); 286 287 if (satapmp_read(chp, PMP_PORT_CTL, PMP_GSCR_ID, &id, xfer) != 0 || 288 satapmp_read(chp, PMP_PORT_CTL, PMP_GSCR_REV, &rev, xfer) != 0 || 289 satapmp_read(chp, PMP_PORT_CTL, PMP_GSCR_INF, &inf, xfer) != 0) { 290 aprint_normal_dev(chp->atabus, "can't read PMP registers\n"); 291 goto out; 292 } 293 294 aprint_normal("%s at %s channel %d: SATA port multiplier, %d ports\n", 295 device_xname(chp->atabus), 296 device_xname(chp->ch_atac->atac_dev), chp->ch_channel, 297 PMP_INF_NPORTS(inf)); 298 aprint_verbose_dev(chp->atabus, 299 "vendor 0x%04x, product 0x%04x", 300 PMP_ID_VEND(id), PMP_ID_DEV(id)); 301 if (rev & PMP_REV_SPEC_11) { 302 aprint_verbose(", revision 1.1"); 303 } else if (rev & PMP_REV_SPEC_10) { 304 aprint_verbose(", revision 1.0"); 305 } else { 306 aprint_verbose(", unknown revision 0x%x", rev & 0x0f); 307 } 308 aprint_verbose(", level %d\n", PMP_REV_LEVEL(rev)); 309 310 chp->ch_satapmp_nports = PMP_INF_NPORTS(inf); 311 312 /* reset and bring up PHYs */ 313 satapmp_rescan(chp, xfer); 314 315 out: 316 ata_channel_unlock(chp); 317 ata_free_xfer(chp, xfer); 318 } 319
Indexes created Fri Oct 03 02:09:57 GMT 2025