satapmp_subr.c revision 1.15
1 /* $NetBSD: satapmp_subr.c,v 1.15 2018/10/22 20:13:47 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 1.15 2018/10/22 20:13:47 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 memset(xfer, 0, sizeof(*xfer)); 66 xfer->c_ata_c.r_command = PMPC_READ_PORT; 67 xfer->c_ata_c.r_features = reg; 68 xfer->c_ata_c.r_device = port; 69 xfer->c_ata_c.timeout = 3000; /* 3s */ 70 xfer->c_ata_c.r_st_bmask = 0; 71 xfer->c_ata_c.r_st_pmask = WDCS_DRDY; 72 xfer->c_ata_c.flags = AT_LBA48 | AT_READREG | AT_WAIT; 73 74 ata_channel_unlock(chp); 75 if ((*atac->atac_bustype_ata->ata_exec_command)(drvp, 76 xfer) != ATACMD_COMPLETE) { 77 aprint_error_dev(chp->atabus, 78 "PMP port %d register %d read failed\n", port, reg); 79 error = EIO; 80 goto out; 81 } 82 if (xfer->c_ata_c.flags & (AT_TIMEOU | AT_DF)) { 83 aprint_error_dev(chp->atabus, 84 "PMP port %d register %d read failed, flags 0x%x\n", 85 port, reg, xfer->c_ata_c.flags); 86 error = EIO; 87 goto out; 88 } 89 if (xfer->c_ata_c.flags & AT_ERROR) { 90 aprint_verbose_dev(chp->atabus, 91 "PMP port %d register %d read failed, error 0x%x\n", 92 port, reg, xfer->c_ata_c.r_error); 93 error = EIO; 94 goto out; 95 } 96 97 *value = ((uint64_t)((xfer->c_ata_c.r_lba >> 24) & 0xffffff) << 40) | 98 ((uint64_t)((xfer->c_ata_c.r_count >> 8) & 0xff) << 32) | 99 ((uint64_t)((xfer->c_ata_c.r_lba >> 0) & 0xffffff) << 8) | 100 ((uint64_t)((xfer->c_ata_c.r_count >> 0) & 0xff) << 0); 101 102 out: 103 ata_channel_lock(chp); 104 return error; 105 } 106 107 static inline int 108 satapmp_read(struct ata_channel *chp, int port, int reg, uint32_t *value, 109 struct ata_xfer *xfer) 110 { 111 uint64_t value64; 112 int ret; 113 114 ret = satapmp_read_8(chp, port, reg, &value64, xfer); 115 if (ret) 116 return ret; 117 118 *value = value64 & 0xffffffff; 119 return ret; 120 } 121 122 static int 123 satapmp_write_8(struct ata_channel *chp, int port, int reg, uint64_t value, 124 struct ata_xfer *xfer) 125 { 126 struct atac_softc *atac = chp->ch_atac; 127 struct ata_drive_datas *drvp; 128 int error = 0; 129 130 KASSERT(port < PMP_MAX_DRIVES); 131 KASSERT(reg < PMP_GSCR_NREGS); 132 KASSERT(chp->ch_ndrives >= PMP_MAX_DRIVES); 133 drvp = &chp->ch_drive[PMP_PORT_CTL]; 134 KASSERT(drvp->drive == PMP_PORT_CTL); 135 ata_channel_lock_owned(chp); 136 137 memset(xfer, 0, sizeof(*xfer)); 138 xfer->c_ata_c.r_command = PMPC_WRITE_PORT; 139 xfer->c_ata_c.r_features = reg; 140 xfer->c_ata_c.r_device = port; 141 xfer->c_ata_c.r_lba = (((value >> 40) & 0xffffff) << 24) | 142 (((value >> 8) & 0xffffff) << 0); 143 xfer->c_ata_c.r_count = (((value >> 32) & 0xff) << 8) | 144 (((value >> 0) & 0xff) << 0); 145 xfer->c_ata_c.timeout = 3000; /* 3s */ 146 xfer->c_ata_c.r_st_bmask = 0; 147 xfer->c_ata_c.r_st_pmask = WDCS_DRDY; 148 xfer->c_ata_c.flags = AT_LBA48 | AT_WAIT; 149 150 ata_channel_unlock(chp); 151 if ((*atac->atac_bustype_ata->ata_exec_command)(drvp, 152 xfer) != ATACMD_COMPLETE) { 153 aprint_error_dev(chp->atabus, 154 "PMP port %d register %d write failed\n", port, reg); 155 error = EIO; 156 goto out; 157 } 158 if (xfer->c_ata_c.flags & (AT_TIMEOU | AT_DF)) { 159 aprint_error_dev(chp->atabus, 160 "PMP port %d register %d write failed, flags 0x%x\n", 161 port, reg, xfer->c_ata_c.flags); 162 error = EIO; 163 goto out; 164 } 165 if (xfer->c_ata_c.flags & AT_ERROR) { 166 aprint_verbose_dev(chp->atabus, 167 "PMP port %d register %d write failed, error 0x%x\n", 168 port, reg, xfer->c_ata_c.r_error); 169 error = EIO; 170 goto out; 171 } 172 173 out: 174 ata_channel_lock(chp); 175 return error; 176 } 177 178 static inline int 179 satapmp_write(struct ata_channel *chp, int port, int reg, uint32_t value, 180 struct ata_xfer *xfer) 181 { 182 return satapmp_write_8(chp, port, reg, value, xfer); 183 } 184 185 /* 186 * Reset one port's PHY and bring it online 187 * XXX duplicate of sata_reset_interface() 188 */ 189 static uint32_t 190 satapmp_reset_device_port(struct ata_channel *chp, int port, 191 struct ata_xfer *xfer) 192 { 193 uint32_t scontrol, sstatus; 194 int i; 195 196 ata_channel_lock_owned(chp); 197 198 /* bring the PHY online */ 199 scontrol = SControl_IPM_NONE | SControl_SPD_ANY | SControl_DET_INIT; 200 if (satapmp_write(chp, port, PMP_PSCR_SControl, scontrol, xfer) != 0) 201 return 0; 202 203 ata_delay(chp, 50, "sataup", AT_WAIT); 204 scontrol &= ~SControl_DET_INIT; 205 if (satapmp_write(chp, port, PMP_PSCR_SControl, scontrol, xfer) != 0) 206 return 0; 207 ata_delay(chp, 50, "sataup", AT_WAIT); 208 209 /* wait up to 1s for device to come up */ 210 for (i = 0; i < 100; i++) { 211 212 if (satapmp_read(chp, port, PMP_PSCR_SStatus, &sstatus, 213 xfer) != 0) 214 return 0; 215 if ((sstatus & SStatus_DET_mask) == SStatus_DET_DEV) 216 break; 217 ata_delay(chp, 10, "sataup", AT_WAIT); 218 } 219 220 switch (sstatus & SStatus_DET_mask) { 221 case SStatus_DET_NODEV: 222 /* No Device; be silent. */ 223 break; 224 case SStatus_DET_DEV_NE: 225 aprint_error("%s PMP port %d: device connected, but " 226 "communication not established\n", 227 device_xname(chp->atabus), port); 228 break; 229 case SStatus_DET_OFFLINE: 230 aprint_error("%s PMP port %d: PHY offline\n", 231 device_xname(chp->atabus), port); 232 break; 233 case SStatus_DET_DEV: 234 aprint_normal("%s PMP port %d: device present, speed: %s\n", 235 device_xname(chp->atabus), port, sata_speed(sstatus)); 236 break; 237 default: 238 aprint_error("%s PMP port %d: unknown SStatus: 0x%08x\n", 239 device_xname(chp->atabus), port, sstatus); 240 } 241 return(sstatus & SStatus_DET_mask); 242 } 243 244 static void __noinline 245 satapmp_rescan(struct ata_channel *chp, struct ata_xfer *xfer) 246 { 247 int i; 248 uint32_t sig; 249 250 KASSERT(chp->ch_satapmp_nports <= PMP_PORT_CTL); 251 KASSERT(chp->ch_satapmp_nports <= chp->ch_ndrives); 252 ata_channel_lock_owned(chp); 253 254 for (i = 0; i < chp->ch_satapmp_nports; i++) { 255 if (chp->ch_drive[i].drive_type != ATA_DRIVET_NONE || 256 satapmp_reset_device_port(chp, i, xfer) 257 != SStatus_DET_DEV) { 258 continue; 259 } 260 if (satapmp_write(chp, i, PMP_PSCR_SError, 0xffffffff, xfer) 261 != 0) { 262 aprint_error("%s PMP port %d: can't write SError\n", 263 device_xname(chp->atabus), i); 264 continue; 265 } 266 267 ata_channel_lock_owned(chp); 268 chp->ch_atac->atac_bustype_ata->ata_reset_drive( 269 &chp->ch_drive[i], AT_WAIT, &sig); 270 271 sata_interpret_sig(chp, i, sig); 272 } 273 } 274 275 void 276 satapmp_attach(struct ata_channel *chp) 277 { 278 uint32_t id, rev, inf; 279 struct ata_xfer *xfer; 280 281 xfer = ata_get_xfer(chp, false); 282 if (xfer == NULL) { 283 aprint_normal_dev(chp->atabus, "no available xfer\n"); 284 return; 285 } 286 287 ata_channel_lock(chp); 288 289 if (satapmp_read(chp, PMP_PORT_CTL, PMP_GSCR_ID, &id, xfer) != 0 || 290 satapmp_read(chp, PMP_PORT_CTL, PMP_GSCR_REV, &rev, xfer) != 0 || 291 satapmp_read(chp, PMP_PORT_CTL, PMP_GSCR_INF, &inf, xfer) != 0) { 292 aprint_normal_dev(chp->atabus, "can't read PMP registers\n"); 293 goto out; 294 } 295 296 aprint_normal("%s at %s channel %d: SATA port multiplier, %d ports\n", 297 device_xname(chp->atabus), 298 device_xname(chp->ch_atac->atac_dev), chp->ch_channel, 299 PMP_INF_NPORTS(inf)); 300 aprint_verbose_dev(chp->atabus, 301 "vendor 0x%04x, product 0x%04x", 302 PMP_ID_VEND(id), PMP_ID_DEV(id)); 303 if (rev & PMP_REV_SPEC_11) { 304 aprint_verbose(", revision 1.1"); 305 } else if (rev & PMP_REV_SPEC_10) { 306 aprint_verbose(", revision 1.0"); 307 } else { 308 aprint_verbose(", unknown revision 0x%x", rev & 0x0f); 309 } 310 aprint_verbose(", level %d\n", PMP_REV_LEVEL(rev)); 311 312 chp->ch_satapmp_nports = PMP_INF_NPORTS(inf); 313 314 /* reset and bring up PHYs */ 315 satapmp_rescan(chp, xfer); 316 317 out: 318 ata_channel_unlock(chp); 319 ata_free_xfer(chp, xfer); 320 } 321
Indexes created Fri Oct 03 02:09:57 GMT 2025