drivers/ata/fsl_sata.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2008,2010 Freescale Semiconductor, Inc.
   4  * Copyright 2019 NXP
   5  * Author: Dave Liu <[email protected]>
   6  */
   7
   8 #include <common.h>
   9 #include <blk.h>
  10 #include <command.h>
  11 #include <console.h>
  12 #include <cpu_func.h>
  13 #include <log.h>
  14 #include <asm/io.h>
  15 #include <asm/processor.h>
  16 #include <asm/fsl_serdes.h>
  17 #include <malloc.h>
  18 #include <libata.h>
  19 #include <fis.h>
  20 #include <sata.h>
  21 #include "fsl_sata.h"
  22
  23 #if CONFIG_IS_ENABLED(BLK)
  24 #include <dm.h>
  25 #include <ahci.h>
  26 #include <blk.h>
  27 #include <dm/device-internal.h>
  28 #else
  29 #ifndef CONFIG_SYS_SATA1_FLAGS
  30         #define CONFIG_SYS_SATA1_FLAGS  FLAGS_DMA
  31 #endif
  32 #ifndef CONFIG_SYS_SATA2_FLAGS
  33         #define CONFIG_SYS_SATA2_FLAGS  FLAGS_DMA
  34 #endif
  35
  36 static struct fsl_sata_info fsl_sata_info[] = {
  37 #ifdef CONFIG_SATA1
  38         {CONFIG_SYS_SATA1, CONFIG_SYS_SATA1_FLAGS},
  39 #else
  40         {0, 0},
  41 #endif
  42 #ifdef CONFIG_SATA2
  43         {CONFIG_SYS_SATA2, CONFIG_SYS_SATA2_FLAGS},
  44 #else
  45         {0, 0},
  46 #endif
  47 };
  48 #endif
  49
  50 static inline void sdelay(unsigned long sec)
  51 {
  52         unsigned long i;
  53         for (i = 0; i < sec; i++)
  54                 mdelay(1000);
  55 }
  56
  57 static void fsl_sata_dump_sfis(struct sata_fis_d2h *s)
  58 {
  59         printf("Status FIS dump:\n\r");
  60         printf("fis_type:               %02x\n\r", s->fis_type);
  61         printf("pm_port_i:              %02x\n\r", s->pm_port_i);
  62         printf("status:                 %02x\n\r", s->status);
  63         printf("error:                  %02x\n\r", s->error);
  64         printf("lba_low:                %02x\n\r", s->lba_low);
  65         printf("lba_mid:                %02x\n\r", s->lba_mid);
  66         printf("lba_high:               %02x\n\r", s->lba_high);
  67         printf("device:                 %02x\n\r", s->device);
  68         printf("lba_low_exp:            %02x\n\r", s->lba_low_exp);
  69         printf("lba_mid_exp:            %02x\n\r", s->lba_mid_exp);
  70         printf("lba_high_exp:           %02x\n\r", s->lba_high_exp);
  71         printf("res1:                   %02x\n\r", s->res1);
  72         printf("sector_count:           %02x\n\r", s->sector_count);
  73         printf("sector_count_exp:       %02x\n\r", s->sector_count_exp);
  74 }
  75
  76 static int ata_wait_register(unsigned __iomem *addr, u32 mask,
  77                          u32 val, u32 timeout_msec)
  78 {
  79         int i;
  80         u32 temp;
  81
  82         for (i = 0; (((temp = in_le32(addr)) & mask) != val)
  83                          && i < timeout_msec; i++)
  84                 mdelay(1);
  85         return (i < timeout_msec) ? 0 : -1;
  86 }
  87
  88 #if !CONFIG_IS_ENABLED(BLK)
  89 int init_sata(int dev)
  90 #else
  91 static int init_sata(struct fsl_ata_priv *priv, int dev)
  92 #endif
  93 {
  94         u32 length, align;
  95         cmd_hdr_tbl_t *cmd_hdr;
  96         u32 cda;
  97         u32 val32;
  98         fsl_sata_reg_t __iomem *reg;
  99         u32 sig;
 100         int i;
 101         fsl_sata_t *sata;
 102
 103         if (dev < 0 || dev > (CONFIG_SYS_SATA_MAX_DEVICE - 1)) {
 104                 printf("the sata index %d is out of ranges\n\r", dev);
 105                 return -1;
 106         }
 107
 108 #ifdef CONFIG_MPC85xx
 109         if ((dev == 0) && (!is_serdes_configured(SATA1))) {
 110                 printf("SATA%d [dev = %d] is not enabled\n", dev+1, dev);
 111                 return -1;
 112         }
 113         if ((dev == 1) && (!is_serdes_configured(SATA2))) {
 114                 printf("SATA%d [dev = %d] is not enabled\n", dev+1, dev);
 115                 return -1;
 116         }
 117 #endif
 118
 119         /* Allocate SATA device driver struct */
 120         sata = (fsl_sata_t *)malloc(sizeof(fsl_sata_t));
 121         if (!sata) {
 122                 printf("alloc the sata device struct failed\n\r");
 123                 return -1;
 124         }
 125         /* Zero all of the device driver struct */
 126         memset((void *)sata, 0, sizeof(fsl_sata_t));
 127
 128         snprintf(sata->name, 12, "SATA%d:", dev);
 129
 130         /* Set the controller register base address to device struct */
 131 #if !CONFIG_IS_ENABLED(BLK)
 132         sata_dev_desc[dev].priv = (void *)sata;
 133         reg = (fsl_sata_reg_t *)(fsl_sata_info[dev].sata_reg_base);
 134         sata->dma_flag = fsl_sata_info[dev].flags;
 135 #else
 136         reg = (fsl_sata_reg_t *)(priv->base + priv->offset * dev);
 137         sata->dma_flag = priv->flag;
 138         priv->fsl_sata = sata;
 139 #endif
 140         sata->reg_base = reg;
 141
 142         /* Allocate the command header table, 4 bytes aligned */
 143         length = sizeof(struct cmd_hdr_tbl);
 144         align = SATA_HC_CMD_HDR_TBL_ALIGN;
 145         sata->cmd_hdr_tbl_offset = (void *)malloc(length + align);
 146         if (!sata->cmd_hdr_tbl_offset) {
 147                 printf("alloc the command header failed\n\r");
 148                 return -1;
 149         }
 150
 151         cmd_hdr = (cmd_hdr_tbl_t *)(((u32)sata->cmd_hdr_tbl_offset + align)
 152                                                 & ~(align - 1));
 153         sata->cmd_hdr = cmd_hdr;
 154
 155         /* Zero all of the command header table */
 156         memset((void *)sata->cmd_hdr_tbl_offset, 0, length + align);
 157
 158         /* Allocate command descriptor for all command */
 159         length = sizeof(struct cmd_desc) * SATA_HC_MAX_CMD;
 160         align = SATA_HC_CMD_DESC_ALIGN;
 161         sata->cmd_desc_offset = (void *)malloc(length + align);
 162         if (!sata->cmd_desc_offset) {
 163                 printf("alloc the command descriptor failed\n\r");
 164                 return -1;
 165         }
 166         sata->cmd_desc = (cmd_desc_t *)(((u32)sata->cmd_desc_offset + align)
 167                                                 & ~(align - 1));
 168         /* Zero all of command descriptor */
 169         memset((void *)sata->cmd_desc_offset, 0, length + align);
 170
 171         /* Link the command descriptor to command header */
 172         for (i = 0; i < SATA_HC_MAX_CMD; i++) {
 173                 cda = ((u32)sata->cmd_desc + SATA_HC_CMD_DESC_SIZE * i)
 174                                          & ~(CMD_HDR_CDA_ALIGN - 1);
 175                 cmd_hdr->cmd_slot[i].cda = cpu_to_le32(cda);
 176         }
 177
 178         /* To have safe state, force the controller offline */
 179         val32 = in_le32(&reg->hcontrol);
 180         val32 &= ~HCONTROL_ONOFF;
 181         val32 |= HCONTROL_FORCE_OFFLINE;
 182         out_le32(&reg->hcontrol, val32);
 183
 184         /* Wait the controller offline */
 185         ata_wait_register(&reg->hstatus, HSTATUS_ONOFF, 0, 1000);
 186
 187         /* Set the command header base address to CHBA register to tell DMA */
 188         out_le32(&reg->chba, (u32)cmd_hdr & ~0x3);
 189
 190         /* Snoop for the command header */
 191         val32 = in_le32(&reg->hcontrol);
 192         val32 |= HCONTROL_HDR_SNOOP;
 193         out_le32(&reg->hcontrol, val32);
 194
 195         /* Disable all of interrupts */
 196         val32 = in_le32(&reg->hcontrol);
 197         val32 &= ~HCONTROL_INT_EN_ALL;
 198         out_le32(&reg->hcontrol, val32);
 199
 200         /* Clear all of interrupts */
 201         val32 = in_le32(&reg->hstatus);
 202         out_le32(&reg->hstatus, val32);
 203
 204         /* Set the ICC, no interrupt coalescing */
 205         out_le32(&reg->icc, 0x01000000);
 206
 207         /* No PM attatched, the SATA device direct connect */
 208         out_le32(&reg->cqpmp, 0);
 209
 210         /* Clear SError register */
 211         val32 = in_le32(&reg->serror);
 212         out_le32(&reg->serror, val32);
 213
 214         /* Clear CER register */
 215         val32 = in_le32(&reg->cer);
 216         out_le32(&reg->cer, val32);
 217
 218         /* Clear DER register */
 219         val32 = in_le32(&reg->der);
 220         out_le32(&reg->der, val32);
 221
 222         /* No device detection or initialization action requested */
 223         out_le32(&reg->scontrol, 0x00000300);
 224
 225         /* Configure the transport layer, default value */
 226         out_le32(&reg->transcfg, 0x08000016);
 227
 228         /* Configure the link layer, default value */
 229         out_le32(&reg->linkcfg, 0x0000ff34);
 230
 231         /* Bring the controller online */
 232         val32 = in_le32(&reg->hcontrol);
 233         val32 |= HCONTROL_ONOFF;
 234         out_le32(&reg->hcontrol, val32);
 235
 236         mdelay(100);
 237
 238         /* print sata device name */
 239         printf("%s ", sata->name);
 240
 241         /* Wait PHY RDY signal changed for 500ms */
 242         ata_wait_register(&reg->hstatus, HSTATUS_PHY_RDY,
 243                           HSTATUS_PHY_RDY, 500);
 244
 245         /* Check PHYRDY */
 246         val32 = in_le32(&reg->hstatus);
 247         if (val32 & HSTATUS_PHY_RDY) {
 248                 sata->link = 1;
 249         } else {
 250                 sata->link = 0;
 251                 printf("(No RDY)\n\r");
 252                 return -1;
 253         }
 254
 255         /* Wait for signature updated, which is 1st D2H */
 256         ata_wait_register(&reg->hstatus, HSTATUS_SIGNATURE,
 257                           HSTATUS_SIGNATURE, 10000);
 258
 259         if (val32 & HSTATUS_SIGNATURE) {
 260                 sig = in_le32(&reg->sig);
 261                 debug("Signature updated, the sig =%08x\n\r", sig);
 262                 sata->ata_device_type = ata_dev_classify(sig);
 263         }
 264
 265         /* Check the speed */
 266         val32 = in_le32(&reg->sstatus);
 267         if ((val32 & SSTATUS_SPD_MASK) == SSTATUS_SPD_GEN1)
 268                 printf("(1.5 Gbps)\n\r");
 269         else if ((val32 & SSTATUS_SPD_MASK) == SSTATUS_SPD_GEN2)
 270                 printf("(3 Gbps)\n\r");
 271
 272         return 0;
 273 }
 274
 275 int reset_sata(int dev)
 276 {
 277         return 0;
 278 }
 279
 280 static void fsl_sata_dump_regs(fsl_sata_reg_t __iomem *reg)
 281 {
 282         printf("\n\rSATA:           %08x\n\r", (u32)reg);
 283         printf("CQR:            %08x\n\r", in_le32(&reg->cqr));
 284         printf("CAR:            %08x\n\r", in_le32(&reg->car));
 285         printf("CCR:            %08x\n\r", in_le32(&reg->ccr));
 286         printf("CER:            %08x\n\r", in_le32(&reg->cer));
 287         printf("CQR:            %08x\n\r", in_le32(&reg->cqr));
 288         printf("DER:            %08x\n\r", in_le32(&reg->der));
 289         printf("CHBA:           %08x\n\r", in_le32(&reg->chba));
 290         printf("HStatus:        %08x\n\r", in_le32(&reg->hstatus));
 291         printf("HControl:       %08x\n\r", in_le32(&reg->hcontrol));
 292         printf("CQPMP:          %08x\n\r", in_le32(&reg->cqpmp));
 293         printf("SIG:            %08x\n\r", in_le32(&reg->sig));
 294         printf("ICC:            %08x\n\r", in_le32(&reg->icc));
 295         printf("SStatus:        %08x\n\r", in_le32(&reg->sstatus));
 296         printf("SError:         %08x\n\r", in_le32(&reg->serror));
 297         printf("SControl:       %08x\n\r", in_le32(&reg->scontrol));
 298         printf("SNotification:  %08x\n\r", in_le32(&reg->snotification));
 299         printf("TransCfg:       %08x\n\r", in_le32(&reg->transcfg));
 300         printf("TransStatus:    %08x\n\r", in_le32(&reg->transstatus));
 301         printf("LinkCfg:        %08x\n\r", in_le32(&reg->linkcfg));
 302         printf("LinkCfg1:       %08x\n\r", in_le32(&reg->linkcfg1));
 303         printf("LinkCfg2:       %08x\n\r", in_le32(&reg->linkcfg2));
 304         printf("LinkStatus:     %08x\n\r", in_le32(&reg->linkstatus));
 305         printf("LinkStatus1:    %08x\n\r", in_le32(&reg->linkstatus1));
 306         printf("PhyCtrlCfg:     %08x\n\r", in_le32(&reg->phyctrlcfg));
 307         printf("SYSPR:          %08x\n\r", in_be32(&reg->syspr));
 308 }
 309
 310 static int fsl_ata_exec_ata_cmd(struct fsl_sata *sata, struct sata_fis_h2d *cfis,
 311                                 int is_ncq, int tag, u8 *buffer, u32 len)
 312 {
 313         cmd_hdr_entry_t *cmd_hdr;
 314         cmd_desc_t *cmd_desc;
 315         sata_fis_h2d_t *h2d;
 316         prd_entry_t *prde;
 317         u32 ext_c_ddc;
 318         u32 prde_count;
 319         u32 val32;
 320         u32 ttl;
 321         fsl_sata_reg_t __iomem *reg = sata->reg_base;
 322         int i;
 323
 324         /* Check xfer length */
 325         if (len > SATA_HC_MAX_XFER_LEN) {
 326                 printf("max transfer length is 64MB\n\r");
 327                 return 0;
 328         }
 329
 330         /* Setup the command descriptor */
 331         cmd_desc = sata->cmd_desc + tag;
 332
 333         /* Get the pointer cfis of command descriptor */
 334         h2d = (sata_fis_h2d_t *)cmd_desc->cfis;
 335
 336         /* Zero the cfis of command descriptor */
 337         memset((void *)h2d, 0, SATA_HC_CMD_DESC_CFIS_SIZE);
 338
 339         /* Copy the cfis from user to command descriptor */
 340         h2d->fis_type = cfis->fis_type;
 341         h2d->pm_port_c = cfis->pm_port_c;
 342         h2d->command = cfis->command;
 343
 344         h2d->features = cfis->features;
 345         h2d->features_exp = cfis->features_exp;
 346
 347         h2d->lba_low = cfis->lba_low;
 348         h2d->lba_mid = cfis->lba_mid;
 349         h2d->lba_high = cfis->lba_high;
 350         h2d->lba_low_exp = cfis->lba_low_exp;
 351         h2d->lba_mid_exp = cfis->lba_mid_exp;
 352         h2d->lba_high_exp = cfis->lba_high_exp;
 353
 354         if (!is_ncq) {
 355                 h2d->sector_count = cfis->sector_count;
 356                 h2d->sector_count_exp = cfis->sector_count_exp;
 357         } else { /* NCQ */
 358                 h2d->sector_count = (u8)(tag << 3);
 359         }
 360
 361         h2d->device = cfis->device;
 362         h2d->control = cfis->control;
 363
 364         /* Setup the PRD table */
 365         prde = (prd_entry_t *)cmd_desc->prdt;
 366         memset((void *)prde, 0, sizeof(struct prdt));
 367
 368         prde_count = 0;
 369         ttl = len;
 370         for (i = 0; i < SATA_HC_MAX_PRD_DIRECT; i++) {
 371                 if (!len)
 372                         break;
 373                 prde->dba = cpu_to_le32((u32)buffer & ~0x3);
 374                 debug("dba = %08x\n\r", (u32)buffer);
 375
 376                 if (len < PRD_ENTRY_MAX_XFER_SZ) {
 377                         ext_c_ddc = PRD_ENTRY_DATA_SNOOP | len;
 378                         debug("ext_c_ddc1 = %08x, len = %08x\n\r", ext_c_ddc, len);
 379                         prde->ext_c_ddc = cpu_to_le32(ext_c_ddc);
 380                         prde_count++;
 381                         prde++;
 382                         break;
 383                 } else {
 384                         ext_c_ddc = PRD_ENTRY_DATA_SNOOP; /* 4M bytes */
 385                         debug("ext_c_ddc2 = %08x, len = %08x\n\r", ext_c_ddc, len);
 386                         prde->ext_c_ddc = cpu_to_le32(ext_c_ddc);
 387                         buffer += PRD_ENTRY_MAX_XFER_SZ;
 388                         len -= PRD_ENTRY_MAX_XFER_SZ;
 389                         prde_count++;
 390                         prde++;
 391                 }
 392         }
 393
 394         /* Setup the command slot of cmd hdr */
 395         cmd_hdr = (cmd_hdr_entry_t *)&sata->cmd_hdr->cmd_slot[tag];
 396
 397         cmd_hdr->cda = cpu_to_le32((u32)cmd_desc & ~0x3);
 398
 399         val32 = prde_count << CMD_HDR_PRD_ENTRY_SHIFT;
 400         val32 |= sizeof(sata_fis_h2d_t);
 401         cmd_hdr->prde_fis_len = cpu_to_le32(val32);
 402
 403         cmd_hdr->ttl = cpu_to_le32(ttl);
 404
 405         if (!is_ncq) {
 406                 val32 = CMD_HDR_ATTR_RES | CMD_HDR_ATTR_SNOOP;
 407         } else {
 408                 val32 = CMD_HDR_ATTR_RES | CMD_HDR_ATTR_SNOOP | CMD_HDR_ATTR_FPDMA;
 409         }
 410
 411         tag &= CMD_HDR_ATTR_TAG;
 412         val32 |= tag;
 413
 414         debug("attribute = %08x\n\r", val32);
 415         cmd_hdr->attribute = cpu_to_le32(val32);
 416
 417         /* Make sure cmd desc and cmd slot valid before command issue */
 418         sync();
 419
 420         /* PMP*/
 421         val32 = (u32)(h2d->pm_port_c & 0x0f);
 422         out_le32(&reg->cqpmp, val32);
 423
 424         /* Wait no active */
 425         if (ata_wait_register(&reg->car, (1 << tag), 0, 10000))
 426                 printf("Wait no active time out\n\r");
 427
 428         /* Issue command */
 429         if (!(in_le32(&reg->cqr) & (1 << tag))) {
 430                 val32 = 1 << tag;
 431                 out_le32(&reg->cqr, val32);
 432         }
 433
 434         /* Wait command completed for 10s */
 435         if (ata_wait_register(&reg->ccr, (1 << tag), (1 << tag), 10000)) {
 436                 if (!is_ncq)
 437                         printf("Non-NCQ command time out\n\r");
 438                 else
 439                         printf("NCQ command time out\n\r");
 440         }
 441
 442         val32 = in_le32(&reg->cer);
 443
 444         if (val32) {
 445                 u32 der;
 446                 fsl_sata_dump_sfis((struct sata_fis_d2h *)cmd_desc->sfis);
 447                 printf("CE at device\n\r");
 448                 fsl_sata_dump_regs(reg);
 449                 der = in_le32(&reg->der);
 450                 out_le32(&reg->cer, val32);
 451                 out_le32(&reg->der, der);
 452         }
 453
 454         /* Clear complete flags */
 455         val32 = in_le32(&reg->ccr);
 456         out_le32(&reg->ccr, val32);
 457
 458         return len;
 459 }
 460
 461 static int fsl_ata_exec_reset_cmd(struct fsl_sata *sata, struct sata_fis_h2d *cfis,
 462                                  int tag, u8 *buffer, u32 len)
 463 {
 464         return 0;
 465 }
 466
 467 static int fsl_sata_exec_cmd(struct fsl_sata *sata, struct sata_fis_h2d *cfis,
 468                  enum cmd_type command_type, int tag, u8 *buffer, u32 len)
 469 {
 470         int rc;
 471
 472         if (tag > SATA_HC_MAX_CMD || tag < 0) {
 473                 printf("tag is out of range, tag=%d\n\r", tag);
 474                 return -1;
 475         }
 476
 477         switch (command_type) {
 478         case CMD_ATA:
 479                 rc = fsl_ata_exec_ata_cmd(sata, cfis, 0, tag, buffer, len);
 480                 return rc;
 481         case CMD_RESET:
 482                 rc = fsl_ata_exec_reset_cmd(sata, cfis, tag, buffer, len);
 483                 return rc;
 484         case CMD_NCQ:
 485                 rc = fsl_ata_exec_ata_cmd(sata, cfis, 1, tag, buffer, len);
 486                 return rc;
 487         case CMD_ATAPI:
 488         case CMD_VENDOR_BIST:
 489         case CMD_BIST:
 490                 printf("not support now\n\r");
 491                 return -1;
 492         default:
 493                 break;
 494         }
 495
 496         return -1;
 497 }
 498
 499 static void fsl_sata_xfer_mode(fsl_sata_t *sata, u16 *id)
 500 {
 501         sata->pio = id[ATA_ID_PIO_MODES];
 502         sata->mwdma = id[ATA_ID_MWDMA_MODES];
 503         sata->udma = id[ATA_ID_UDMA_MODES];
 504         debug("pio %04x, mwdma %04x, udma %04x\n\r", sata->pio, sata->mwdma, sata->udma);
 505 }
 506
 507 static void fsl_sata_set_features(fsl_sata_t *sata)
 508 {
 509         struct sata_fis_h2d h2d, *cfis = &h2d;
 510         u8 udma_cap;
 511
 512         memset(cfis, 0, sizeof(struct sata_fis_h2d));
 513
 514         cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
 515         cfis->pm_port_c = 0x80; /* is command */
 516         cfis->command = ATA_CMD_SET_FEATURES;
 517         cfis->features = SETFEATURES_XFER;
 518
 519         /* First check the device capablity */
 520         udma_cap = (u8)(sata->udma & 0xff);
 521         debug("udma_cap %02x\n\r", udma_cap);
 522
 523         if (udma_cap == ATA_UDMA6)
 524                 cfis->sector_count = XFER_UDMA_6;
 525         if (udma_cap == ATA_UDMA5)
 526                 cfis->sector_count = XFER_UDMA_5;
 527         if (udma_cap == ATA_UDMA4)
 528                 cfis->sector_count = XFER_UDMA_4;
 529         if (udma_cap == ATA_UDMA3)
 530                 cfis->sector_count = XFER_UDMA_3;
 531
 532         fsl_sata_exec_cmd(sata, cfis, CMD_ATA, 0, NULL, 0);
 533 }
 534
 535 static u32 fsl_sata_rw_cmd(fsl_sata_t *sata, u32 start, u32 blkcnt, u8 *buffer,
 536                            int is_write)
 537 {
 538         struct sata_fis_h2d h2d, *cfis = &h2d;
 539         u32 block;
 540
 541         block = start;
 542
 543         memset(cfis, 0, sizeof(struct sata_fis_h2d));
 544
 545         cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
 546         cfis->pm_port_c = 0x80; /* is command */
 547         cfis->command = (is_write) ? ATA_CMD_WRITE : ATA_CMD_READ;
 548         cfis->device = ATA_LBA;
 549
 550         cfis->device |= (block >> 24) & 0xf;
 551         cfis->lba_high = (block >> 16) & 0xff;
 552         cfis->lba_mid = (block >> 8) & 0xff;
 553         cfis->lba_low = block & 0xff;
 554         cfis->sector_count = (u8)(blkcnt & 0xff);
 555
 556         fsl_sata_exec_cmd(sata, cfis, CMD_ATA, 0, buffer, ATA_SECT_SIZE * blkcnt);
 557         return blkcnt;
 558 }
 559
 560 static void fsl_sata_flush_cache(fsl_sata_t *sata)
 561 {
 562         struct sata_fis_h2d h2d, *cfis = &h2d;
 563
 564         memset(cfis, 0, sizeof(struct sata_fis_h2d));
 565
 566         cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
 567         cfis->pm_port_c = 0x80; /* is command */
 568         cfis->command = ATA_CMD_FLUSH;
 569
 570         fsl_sata_exec_cmd(sata, cfis, CMD_ATA, 0, NULL, 0);
 571 }
 572
 573 static u32 fsl_sata_rw_cmd_ext(fsl_sata_t *sata, u32 start, u32 blkcnt,
 574                                u8 *buffer, int is_write)
 575 {
 576         struct sata_fis_h2d h2d, *cfis = &h2d;
 577         u64 block;
 578
 579         block = (u64)start;
 580
 581         memset(cfis, 0, sizeof(struct sata_fis_h2d));
 582
 583         cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
 584         cfis->pm_port_c = 0x80; /* is command */
 585
 586         cfis->command = (is_write) ? ATA_CMD_WRITE_EXT
 587                                  : ATA_CMD_READ_EXT;
 588
 589         cfis->lba_high_exp = (block >> 40) & 0xff;
 590         cfis->lba_mid_exp = (block >> 32) & 0xff;
 591         cfis->lba_low_exp = (block >> 24) & 0xff;
 592         cfis->lba_high = (block >> 16) & 0xff;
 593         cfis->lba_mid = (block >> 8) & 0xff;
 594         cfis->lba_low = block & 0xff;
 595         cfis->device = ATA_LBA;
 596         cfis->sector_count_exp = (blkcnt >> 8) & 0xff;
 597         cfis->sector_count = blkcnt & 0xff;
 598
 599         fsl_sata_exec_cmd(sata, cfis, CMD_ATA, 0, buffer, ATA_SECT_SIZE * blkcnt);
 600         return blkcnt;
 601 }
 602
 603 static u32 fsl_sata_rw_ncq_cmd(fsl_sata_t *sata, u32 start, u32 blkcnt,
 604                                u8 *buffer, int is_write)
 605 {
 606         struct sata_fis_h2d h2d, *cfis = &h2d;
 607         int ncq_channel;
 608         u64 block;
 609
 610         if (sata->lba48 != 1) {
 611                 printf("execute FPDMA command on non-LBA48 hard disk\n\r");
 612                 return -1;
 613         }
 614
 615         block = (u64)start;
 616
 617         memset(cfis, 0, sizeof(struct sata_fis_h2d));
 618
 619         cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
 620         cfis->pm_port_c = 0x80; /* is command */
 621
 622         cfis->command = (is_write) ? ATA_CMD_FPDMA_WRITE
 623                                  : ATA_CMD_FPDMA_READ;
 624
 625         cfis->lba_high_exp = (block >> 40) & 0xff;
 626         cfis->lba_mid_exp = (block >> 32) & 0xff;
 627         cfis->lba_low_exp = (block >> 24) & 0xff;
 628         cfis->lba_high = (block >> 16) & 0xff;
 629         cfis->lba_mid = (block >> 8) & 0xff;
 630         cfis->lba_low = block & 0xff;
 631
 632         cfis->device = ATA_LBA;
 633         cfis->features_exp = (blkcnt >> 8) & 0xff;
 634         cfis->features = blkcnt & 0xff;
 635
 636         if (sata->queue_depth >= SATA_HC_MAX_CMD)
 637                 ncq_channel = SATA_HC_MAX_CMD - 1;
 638         else
 639                 ncq_channel = sata->queue_depth - 1;
 640
 641         /* Use the latest queue */
 642         fsl_sata_exec_cmd(sata, cfis, CMD_NCQ, ncq_channel, buffer, ATA_SECT_SIZE * blkcnt);
 643         return blkcnt;
 644 }
 645
 646 static void fsl_sata_flush_cache_ext(fsl_sata_t *sata)
 647 {
 648         struct sata_fis_h2d h2d, *cfis = &h2d;
 649
 650         memset(cfis, 0, sizeof(struct sata_fis_h2d));
 651
 652         cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
 653         cfis->pm_port_c = 0x80; /* is command */
 654         cfis->command = ATA_CMD_FLUSH_EXT;
 655
 656         fsl_sata_exec_cmd(sata, cfis, CMD_ATA, 0, NULL, 0);
 657 }
 658
 659 static void fsl_sata_init_wcache(fsl_sata_t *sata, u16 *id)
 660 {
 661         if (ata_id_has_wcache(id) && ata_id_wcache_enabled(id))
 662                 sata->wcache = 1;
 663         if (ata_id_has_flush(id))
 664                 sata->flush = 1;
 665         if (ata_id_has_flush_ext(id))
 666                 sata->flush_ext = 1;
 667 }
 668
 669 static u32 ata_low_level_rw_lba48(fsl_sata_t *sata, u32 blknr, lbaint_t blkcnt,
 670                                   const void *buffer, int is_write)
 671 {
 672         u32 start, blks;
 673         u8 *addr;
 674         int max_blks;
 675
 676         start = blknr;
 677         blks = blkcnt;
 678         addr = (u8 *)buffer;
 679
 680         max_blks = ATA_MAX_SECTORS_LBA48;
 681         do {
 682                 if (blks > max_blks) {
 683                         if (sata->dma_flag != FLAGS_FPDMA)
 684                                 fsl_sata_rw_cmd_ext(sata, start, max_blks, addr,
 685                                                     is_write);
 686                         else
 687                                 fsl_sata_rw_ncq_cmd(sata, start, max_blks, addr,
 688                                                     is_write);
 689                         start += max_blks;
 690                         blks -= max_blks;
 691                         addr += ATA_SECT_SIZE * max_blks;
 692                 } else {
 693                         if (sata->dma_flag != FLAGS_FPDMA)
 694                                 fsl_sata_rw_cmd_ext(sata, start, blks, addr,
 695                                                     is_write);
 696                         else
 697                                 fsl_sata_rw_ncq_cmd(sata, start, blks, addr,
 698                                                     is_write);
 699                         start += blks;
 700                         blks = 0;
 701                         addr += ATA_SECT_SIZE * blks;
 702                 }
 703         } while (blks != 0);
 704
 705         return blkcnt;
 706 }
 707
 708 static u32 ata_low_level_rw_lba28(fsl_sata_t *sata, u32 blknr, u32 blkcnt,
 709                                   const void *buffer, int is_write)
 710 {
 711         u32 start, blks;
 712         u8 *addr;
 713         int max_blks;
 714
 715         start = blknr;
 716         blks = blkcnt;
 717         addr = (u8 *)buffer;
 718
 719         max_blks = ATA_MAX_SECTORS;
 720         do {
 721                 if (blks > max_blks) {
 722                         fsl_sata_rw_cmd(sata, start, max_blks, addr, is_write);
 723                         start += max_blks;
 724                         blks -= max_blks;
 725                         addr += ATA_SECT_SIZE * max_blks;
 726                 } else {
 727                         fsl_sata_rw_cmd(sata, start, blks, addr, is_write);
 728                         start += blks;
 729                         blks = 0;
 730                         addr += ATA_SECT_SIZE * blks;
 731                 }
 732         } while (blks != 0);
 733
 734         return blkcnt;
 735 }
 736
 737 /*
 738  * SATA interface between low level driver and command layer
 739  */
 740 #if !CONFIG_IS_ENABLED(BLK)
 741 ulong sata_read(int dev, ulong blknr, lbaint_t blkcnt, void *buffer)
 742 {
 743         fsl_sata_t *sata = (fsl_sata_t *)sata_dev_desc[dev].priv;
 744 #else
 745 static ulong sata_read(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
 746                        void *buffer)
 747 {
 748         struct fsl_ata_priv *priv = dev_get_platdata(dev);
 749         fsl_sata_t *sata = priv->fsl_sata;
 750 #endif
 751         u32 rc;
 752
 753         if (sata->lba48)
 754                 rc = ata_low_level_rw_lba48(sata, blknr, blkcnt, buffer,
 755                                             READ_CMD);
 756         else
 757                 rc = ata_low_level_rw_lba28(sata, blknr, blkcnt, buffer,
 758                                             READ_CMD);
 759         return rc;
 760 }
 761
 762 #if !CONFIG_IS_ENABLED(BLK)
 763 ulong sata_write(int dev, ulong blknr, lbaint_t blkcnt, const void *buffer)
 764 {
 765         fsl_sata_t *sata = (fsl_sata_t *)sata_dev_desc[dev].priv;
 766 #else
 767 static ulong sata_write(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
 768                         const void *buffer)
 769 {
 770         struct fsl_ata_priv *priv = dev_get_platdata(dev);
 771         fsl_sata_t *sata = priv->fsl_sata;
 772 #endif
 773         u32 rc;
 774
 775         if (sata->lba48) {
 776                 rc = ata_low_level_rw_lba48(sata, blknr, blkcnt, buffer,
 777                                             WRITE_CMD);
 778                 if (sata->wcache && sata->flush_ext)
 779                         fsl_sata_flush_cache_ext(sata);
 780         } else {
 781                 rc = ata_low_level_rw_lba28(sata, blknr, blkcnt, buffer,
 782                                             WRITE_CMD);
 783                 if (sata->wcache && sata->flush)
 784                         fsl_sata_flush_cache(sata);
 785         }
 786         return rc;
 787 }
 788
 789 static void fsl_sata_identify(fsl_sata_t *sata, u16 *id)
 790 {
 791         struct sata_fis_h2d h2d, *cfis = &h2d;
 792
 793         memset(cfis, 0, sizeof(struct sata_fis_h2d));
 794
 795         cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
 796         cfis->pm_port_c = 0x80; /* is command */
 797         cfis->command = ATA_CMD_ID_ATA;
 798
 799         fsl_sata_exec_cmd(sata, cfis, CMD_ATA, 0, (u8 *)id, ATA_ID_WORDS * 2);
 800         ata_swap_buf_le16(id, ATA_ID_WORDS);
 801 }
 802
 803 #if !CONFIG_IS_ENABLED(BLK)
 804 int scan_sata(int dev)
 805 {
 806         fsl_sata_t *sata = (fsl_sata_t *)sata_dev_desc[dev].priv;
 807 #else
 808 static int scan_sata(struct udevice *dev)
 809 {
 810         struct blk_desc *desc = dev_get_uclass_platdata(dev);
 811         struct fsl_ata_priv *priv = dev_get_platdata(dev);
 812         fsl_sata_t *sata = priv->fsl_sata;
 813 #endif
 814
 815         unsigned char serial[ATA_ID_SERNO_LEN + 1];
 816         unsigned char firmware[ATA_ID_FW_REV_LEN + 1];
 817         unsigned char product[ATA_ID_PROD_LEN + 1];
 818         u16 *id;
 819         u64 n_sectors;
 820
 821         /* if no detected link */
 822         if (!sata->link)
 823                 return -1;
 824
 825         id = (u16 *)malloc(ATA_ID_WORDS * 2);
 826         if (!id) {
 827                 printf("id malloc failed\n\r");
 828                 return -1;
 829         }
 830
 831         /* Identify device to get information */
 832         fsl_sata_identify(sata, id);
 833
 834         /* Serial number */
 835         ata_id_c_string(id, serial, ATA_ID_SERNO, sizeof(serial));
 836
 837         /* Firmware version */
 838         ata_id_c_string(id, firmware, ATA_ID_FW_REV, sizeof(firmware));
 839
 840         /* Product model */
 841         ata_id_c_string(id, product, ATA_ID_PROD, sizeof(product));
 842
 843         /* Totoal sectors */
 844         n_sectors = ata_id_n_sectors(id);
 845
 846 #ifdef CONFIG_LBA48
 847         /* Check if support LBA48 */
 848         if (ata_id_has_lba48(id)) {
 849                 sata->lba48 = 1;
 850                 debug("Device support LBA48\n\r");
 851         } else
 852                 debug("Device supports LBA28\n\r");
 853 #endif
 854
 855 #if !CONFIG_IS_ENABLED(BLK)
 856         memcpy(sata_dev_desc[dev].product, serial, sizeof(serial));
 857         memcpy(sata_dev_desc[dev].revision, firmware, sizeof(firmware));
 858         memcpy(sata_dev_desc[dev].vendor, product, sizeof(product));
 859         sata_dev_desc[dev].lba = (u32)n_sectors;
 860 #ifdef CONFIG_LBA48
 861         sata_dev_desc[dev].lba48 = sata->lba48;
 862 #endif
 863 #else
 864         memcpy(desc->product, serial, sizeof(serial));
 865         memcpy(desc->revision, firmware, sizeof(firmware));
 866         memcpy(desc->vendor, product, sizeof(product));
 867         desc->lba = n_sectors;
 868 #ifdef CONFIG_LBA48
 869         desc->lba48 = sata->lba48;
 870 #endif
 871 #endif
 872
 873         /* Get the NCQ queue depth from device */
 874         sata->queue_depth = ata_id_queue_depth(id);
 875
 876         /* Get the xfer mode from device */
 877         fsl_sata_xfer_mode(sata, id);
 878
 879         /* Get the write cache status from device */
 880         fsl_sata_init_wcache(sata, id);
 881
 882         /* Set the xfer mode to highest speed */
 883         fsl_sata_set_features(sata);
 884
 885 #ifdef DEBUG
 886         ata_dump_id(id);
 887 #endif
 888         free((void *)id);
 889         return 0;
 890 }
 891
 892 #if CONFIG_IS_ENABLED(BLK)
 893 static const struct blk_ops sata_fsl_blk_ops = {
 894         .read   = sata_read,
 895         .write  = sata_write,
 896 };
 897
 898 U_BOOT_DRIVER(sata_fsl_driver) = {
 899         .name = "sata_fsl_blk",
 900         .id = UCLASS_BLK,
 901         .ops = &sata_fsl_blk_ops,
 902         .platdata_auto_alloc_size = sizeof(struct fsl_ata_priv),
 903 };
 904
 905 static int fsl_ata_ofdata_to_platdata(struct udevice *dev)
 906 {
 907         struct fsl_ata_priv *priv = dev_get_priv(dev);
 908
 909         priv->number = dev_read_u32_default(dev, "sata-number", -1);
 910         priv->flag = dev_read_u32_default(dev, "sata-fpdma", -1);
 911         priv->offset = dev_read_u32_default(dev, "sata-offset", -1);
 912
 913         priv->base = dev_read_addr(dev);
 914         if (priv->base == FDT_ADDR_T_NONE)
 915                 return -EINVAL;
 916
 917         return 0;
 918 }
 919
 920 static int fsl_unbind_device(struct udevice *dev)
 921 {
 922         int ret;
 923
 924         ret = device_remove(dev, DM_REMOVE_NORMAL);
 925         if (ret)
 926                 return ret;
 927
 928         ret = device_unbind(dev);
 929         if (ret)
 930                 return ret;
 931
 932         return 0;
 933 }
 934
 935 static int fsl_ata_probe(struct udevice *dev)
 936 {
 937         struct fsl_ata_priv *blk_priv, *priv;
 938         struct udevice *blk;
 939         int failed_number;
 940         char sata_name[10];
 941         int nr_ports;
 942         int ret;
 943         int i;
 944
 945         failed_number = 0;
 946         priv = dev_get_priv(dev);
 947         nr_ports = priv->number;
 948         nr_ports = min(nr_ports, CONFIG_SYS_SATA_MAX_DEVICE);
 949
 950         for (i = 0; i < nr_ports; i++) {
 951                 snprintf(sata_name, sizeof(sata_name), "fsl_sata%d", i);
 952                 ret = blk_create_devicef(dev, "sata_fsl_blk", sata_name,
 953                                          IF_TYPE_SATA, -1, 512, 0, &blk);
 954                 if (ret) {
 955                         debug("Can't create device\n");
 956                         return ret;
 957                 }
 958
 959                 /* Init SATA port */
 960                 ret = init_sata(priv, i);
 961                 if (ret) {
 962                         debug("%s: Failed to init sata\n", __func__);
 963                         ret = fsl_unbind_device(blk);
 964                         if (ret)
 965                                 return ret;
 966
 967                         failed_number++;
 968                         continue;
 969                 }
 970
 971                 blk_priv = dev_get_platdata(blk);
 972                 blk_priv->fsl_sata = priv->fsl_sata;
 973                 /* Scan SATA port */
 974                 ret = scan_sata(blk);
 975                 if (ret) {
 976                         debug("%s: Failed to scan bus\n", __func__);
 977                         ret = fsl_unbind_device(blk);
 978                         if (ret)
 979                                 return ret;
 980
 981                         failed_number++;
 982                         continue;
 983                 }
 984         }
 985
 986         if (failed_number == nr_ports)
 987                 return -ENODEV;
 988         else
 989                 return 0;
 990 }
 991
 992 static int fsl_ata_remove(struct udevice *dev)
 993 {
 994         fsl_sata_t *sata;
 995         struct fsl_ata_priv *priv;
 996
 997         priv = dev_get_priv(dev);
 998         sata = priv->fsl_sata;
 999
1000         free(sata->cmd_hdr_tbl_offset);
1001         free(sata->cmd_desc_offset);
1002         free(sata);
1003
1004         return 0;
1005 }
1006
1007 static int sata_fsl_scan(struct udevice *dev)
1008 {
1009         /* Nothing to do here */
1010
1011         return 0;
1012 }
1013
1014 struct ahci_ops sata_fsl_ahci_ops = {
1015         .scan = sata_fsl_scan,
1016 };
1017
1018 static const struct udevice_id fsl_ata_ids[] = {
1019         { .compatible = "fsl,pq-sata-v2" },
1020         { }
1021 };
1022
1023 U_BOOT_DRIVER(fsl_ahci) = {
1024         .name   = "fsl_ahci",
1025         .id = UCLASS_AHCI,
1026         .of_match = fsl_ata_ids,
1027         .ops = &sata_fsl_ahci_ops,
1028         .ofdata_to_platdata = fsl_ata_ofdata_to_platdata,
1029         .probe  = fsl_ata_probe,
1030         .remove = fsl_ata_remove,
1031         .priv_auto_alloc_size = sizeof(struct fsl_ata_priv),
1032 };
1033 #endif