satapmp_subr.c revision 1.12.24.4
1 /* $NetBSD: satapmp_subr.c,v 1.12.24.4 2017/06/20 20:58:22 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 1.12.24.4 2017/06/20 20:58:22 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 { 53 struct ata_xfer *xfer; 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 64 xfer = ata_get_xfer(chp); 65 if (xfer == NULL) 66 return EINTR; 67 68 xfer->c_ata_c.r_command = PMPC_READ_PORT; 69 xfer->c_ata_c.r_features = reg; 70 xfer->c_ata_c.r_device = port; 71 xfer->c_ata_c.timeout = 3000; /* 3s */ 72 xfer->c_ata_c.r_st_bmask = 0; 73 xfer->c_ata_c.r_st_pmask = WDCS_DRDY; 74 xfer->c_ata_c.flags = AT_LBA48 | AT_READREG | AT_WAIT; 75 76 if ((*atac->atac_bustype_ata->ata_exec_command)(drvp, 77 xfer) != ATACMD_COMPLETE) { 78 aprint_error_dev(chp->atabus, 79 "PMP port %d register %d read failed\n", port, reg); 80 error = EIO; 81 goto out; 82 } 83 if (xfer->c_ata_c.flags & (AT_TIMEOU | AT_DF)) { 84 aprint_error_dev(chp->atabus, 85 "PMP port %d register %d read failed, flags 0x%x\n", 86 port, reg, xfer->c_ata_c.flags); 87 error = EIO; 88 goto out; 89 } 90 if (xfer->c_ata_c.flags & AT_ERROR) { 91 aprint_verbose_dev(chp->atabus, 92 "PMP port %d register %d read failed, error 0x%x\n", 93 port, reg, xfer->c_ata_c.r_error); 94 error = EIO; 95 goto out; 96 } 97 98 *value = ((uint64_t)((xfer->c_ata_c.r_lba >> 24) & 0xffffff) << 40) | 99 ((uint64_t)((xfer->c_ata_c.r_count >> 8) & 0xff) << 32) | 100 ((uint64_t)((xfer->c_ata_c.r_lba >> 0) & 0xffffff) << 8) | 101 ((uint64_t)((xfer->c_ata_c.r_count >> 0) & 0xff) << 0); 102 103 out: 104 ata_free_xfer(chp, xfer); 105 return error; 106 } 107 108 static inline int 109 satapmp_read(struct ata_channel *chp, int port, int reg, uint32_t *value) 110 { 111 uint64_t value64; 112 int ret; 113 114 ret = satapmp_read_8(chp, port, reg, &value64); 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 { 125 struct ata_xfer *xfer; 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); 135 136 xfer = ata_get_xfer(chp); 137 if (xfer == NULL) 138 return EINTR; 139 140 xfer->c_ata_c.r_command = PMPC_WRITE_PORT; 141 xfer->c_ata_c.r_features = reg; 142 xfer->c_ata_c.r_device = port; 143 xfer->c_ata_c.r_lba = (((value >> 40) & 0xffffff) << 24) | 144 (((value >> 8) & 0xffffff) << 0); 145 xfer->c_ata_c.r_count = (((value >> 32) & 0xff) << 8) | 146 (((value >> 0) & 0xff) << 0); 147 xfer->c_ata_c.timeout = 3000; /* 3s */ 148 xfer->c_ata_c.r_st_bmask = 0; 149 xfer->c_ata_c.r_st_pmask = WDCS_DRDY; 150 xfer->c_ata_c.flags = AT_LBA48 | AT_WAIT; 151 152 if ((*atac->atac_bustype_ata->ata_exec_command)(drvp, 153 xfer) != ATACMD_COMPLETE) { 154 aprint_error_dev(chp->atabus, 155 "PMP port %d register %d write failed\n", port, reg); 156 error = EIO; 157 goto out; 158 } 159 if (xfer->c_ata_c.flags & (AT_TIMEOU | AT_DF)) { 160 aprint_error_dev(chp->atabus, 161 "PMP port %d register %d write failed, flags 0x%x\n", 162 port, reg, xfer->c_ata_c.flags); 163 error = EIO; 164 goto out; 165 } 166 if (xfer->c_ata_c.flags & AT_ERROR) { 167 aprint_verbose_dev(chp->atabus, 168 "PMP port %d register %d write failed, error 0x%x\n", 169 port, reg, xfer->c_ata_c.r_error); 170 error = EIO; 171 goto out; 172 } 173 174 out: 175 ata_free_xfer(chp, xfer); 176 return error; 177 } 178 179 static inline int 180 satapmp_write(struct ata_channel *chp, int port, int reg, uint32_t value) 181 { 182 return satapmp_write_8(chp, port, reg, value); 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 { 192 uint32_t scontrol, sstatus; 193 int i; 194 195 /* bring the PHY online */ 196 scontrol = SControl_IPM_NONE | SControl_SPD_ANY | SControl_DET_INIT; 197 if (satapmp_write(chp, port, PMP_PSCR_SControl, scontrol) != 0) 198 return 0; 199 200 tsleep(chp, PRIBIO, "sataup", mstohz(50)); 201 scontrol &= ~SControl_DET_INIT; 202 if (satapmp_write(chp, port, PMP_PSCR_SControl, scontrol) != 0) 203 return 0; 204 tsleep(chp, PRIBIO, "sataup", mstohz(50)); 205 206 /* wait up to 1s for device to come up */ 207 for (i = 0; i < 100; i++) { 208 209 if (satapmp_read(chp, port, PMP_PSCR_SStatus, &sstatus) != 0) 210 return 0; 211 if ((sstatus & SStatus_DET_mask) == SStatus_DET_DEV) 212 break; 213 tsleep(chp, PRIBIO, "sataup", mstohz(10)); 214 } 215 216 switch (sstatus & SStatus_DET_mask) { 217 case SStatus_DET_NODEV: 218 /* No Device; be silent. */ 219 break; 220 case SStatus_DET_DEV_NE: 221 aprint_error("%s PMP port %d: device connected, but " 222 "communication not established\n", 223 device_xname(chp->atabus), port); 224 break; 225 case SStatus_DET_OFFLINE: 226 aprint_error("%s PMP port %d: PHY offline\n", 227 device_xname(chp->atabus), port); 228 break; 229 case SStatus_DET_DEV: 230 aprint_normal("%s PMP port %d: device present, speed: %s\n", 231 device_xname(chp->atabus), port, sata_speed(sstatus)); 232 break; 233 default: 234 aprint_error("%s PMP port %d: unknown SStatus: 0x%08x\n", 235 device_xname(chp->atabus), port, sstatus); 236 } 237 return(sstatus & SStatus_DET_mask); 238 } 239 240 void 241 satapmp_rescan(struct ata_channel *chp) { 242 int i; 243 uint32_t sig; 244 245 KASSERT(chp->ch_satapmp_nports <= PMP_PORT_CTL); 246 KASSERT(chp->ch_satapmp_nports <= chp->ch_ndrives); 247 248 for (i = 0; i < chp->ch_satapmp_nports; i++) { 249 if (chp->ch_drive[i].drive_type != ATA_DRIVET_NONE || 250 satapmp_reset_device_port(chp, i) != SStatus_DET_DEV) { 251 continue; 252 } 253 if (satapmp_write(chp, i, PMP_PSCR_SError, 0xffffffff) != 0) { 254 aprint_error("%s PMP port %d: can't write SError\n", 255 device_xname(chp->atabus), i); 256 continue; 257 } 258 chp->ch_atac->atac_bustype_ata->ata_reset_drive( 259 &chp->ch_drive[i], AT_WAIT, &sig); 260 261 sata_interpret_sig(chp, i, sig); 262 } 263 } 264 265 void 266 satapmp_attach(struct ata_channel *chp) 267 { 268 uint32_t id, rev, inf; 269 270 if (satapmp_read(chp, PMP_PORT_CTL, PMP_GSCR_ID, &id) != 0 || 271 satapmp_read(chp, PMP_PORT_CTL, PMP_GSCR_REV, &rev) != 0 || 272 satapmp_read(chp, PMP_PORT_CTL, PMP_GSCR_INF, &inf) != 0) { 273 aprint_normal_dev(chp->atabus, "can't read PMP registers\n"); 274 return; 275 } 276 277 aprint_normal_dev(chp->atabus, 278 "SATA port multiplier, %d ports\n", PMP_INF_NPORTS(inf)); 279 aprint_verbose_dev(chp->atabus, 280 "vendor 0x%04x, product 0x%04x", 281 PMP_ID_VEND(id), PMP_ID_DEV(id)); 282 if (rev & PMP_REV_SPEC_11) { 283 aprint_verbose(", revision 1.1"); 284 } else if (rev & PMP_REV_SPEC_10) { 285 aprint_verbose(", revision 1.0"); 286 } else { 287 aprint_verbose(", unknown revision 0x%x", rev & 0x0f); 288 } 289 aprint_verbose(", level %d\n", PMP_REV_LEVEL(rev)); 290 291 chp->ch_satapmp_nports = PMP_INF_NPORTS(inf); 292 293 /* reset and bring up PHYs */ 294 satapmp_rescan(chp); 295 } 296
Indexes created Fri Oct 03 02:09:57 GMT 2025