drivers/scsi/mvsas/mv_64xx.c

   1 /*
   2  * Marvell 88SE64xx hardware specific
   3  *
   4  * Copyright 2007 Red Hat, Inc.
   5  * Copyright 2008 Marvell. <kewei@marvell.com>
   6  * Copyright 2009-2011 Marvell. <yuxiangl@marvell.com>
   7  *
   8  * This file is licensed under GPLv2.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; version 2 of the
  13  * License.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  23  * USA
  24 */
  25
  26 #include "mv_sas.h"
  27 #include "mv_64xx.h"
  28 #include "mv_chips.h"
  29
  30 static void mvs_64xx_detect_porttype(struct mvs_info *mvi, int i)
  31 {
  32         void __iomem *regs = mvi->regs;
  33         u32 reg;
  34         struct mvs_phy *phy = &mvi->phy[i];
  35
  36         reg = mr32(MVS_GBL_PORT_TYPE);
  37         phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
  38         if (reg & MODE_SAS_SATA & (1 << i))
  39                 phy->phy_type |= PORT_TYPE_SAS;
  40         else
  41                 phy->phy_type |= PORT_TYPE_SATA;
  42 }
  43
  44 static void mvs_64xx_enable_xmt(struct mvs_info *mvi, int phy_id)
  45 {
  46         void __iomem *regs = mvi->regs;
  47         u32 tmp;
  48
  49         tmp = mr32(MVS_PCS);
  50         if (mvi->chip->n_phy <= MVS_SOC_PORTS)
  51                 tmp |= 1 << (phy_id + PCS_EN_PORT_XMT_SHIFT);
  52         else
  53                 tmp |= 1 << (phy_id + PCS_EN_PORT_XMT_SHIFT2);
  54         mw32(MVS_PCS, tmp);
  55 }
  56
  57 static void mvs_64xx_phy_hacks(struct mvs_info *mvi)
  58 {
  59         void __iomem *regs = mvi->regs;
  60         int i;
  61
  62         mvs_phy_hacks(mvi);
  63
  64         if (!(mvi->flags & MVF_FLAG_SOC)) {
  65                 for (i = 0; i < MVS_SOC_PORTS; i++) {
  66                         mvs_write_port_vsr_addr(mvi, i, VSR_PHY_MODE8);
  67                         mvs_write_port_vsr_data(mvi, i, 0x2F0);
  68                 }
  69         } else {
  70                 /* disable auto port detection */
  71                 mw32(MVS_GBL_PORT_TYPE, 0);
  72                 for (i = 0; i < mvi->chip->n_phy; i++) {
  73                         mvs_write_port_vsr_addr(mvi, i, VSR_PHY_MODE7);
  74                         mvs_write_port_vsr_data(mvi, i, 0x90000000);
  75                         mvs_write_port_vsr_addr(mvi, i, VSR_PHY_MODE9);
  76                         mvs_write_port_vsr_data(mvi, i, 0x50f2);
  77                         mvs_write_port_vsr_addr(mvi, i, VSR_PHY_MODE11);
  78                         mvs_write_port_vsr_data(mvi, i, 0x0e);
  79                 }
  80         }
  81 }
  82
  83 static void mvs_64xx_stp_reset(struct mvs_info *mvi, u32 phy_id)
  84 {
  85         void __iomem *regs = mvi->regs;
  86         u32 reg, tmp;
  87
  88         if (!(mvi->flags & MVF_FLAG_SOC)) {
  89                 if (phy_id < MVS_SOC_PORTS)
  90                         pci_read_config_dword(mvi->pdev, PCR_PHY_CTL, &reg);
  91                 else
  92                         pci_read_config_dword(mvi->pdev, PCR_PHY_CTL2, &reg);
  93
  94         } else
  95                 reg = mr32(MVS_PHY_CTL);
  96
  97         tmp = reg;
  98         if (phy_id < MVS_SOC_PORTS)
  99                 tmp |= (1U << phy_id) << PCTL_LINK_OFFS;
 100         else
 101                 tmp |= (1U << (phy_id - MVS_SOC_PORTS)) << PCTL_LINK_OFFS;
 102
 103         if (!(mvi->flags & MVF_FLAG_SOC)) {
 104                 if (phy_id < MVS_SOC_PORTS) {
 105                         pci_write_config_dword(mvi->pdev, PCR_PHY_CTL, tmp);
 106                         mdelay(10);
 107                         pci_write_config_dword(mvi->pdev, PCR_PHY_CTL, reg);
 108                 } else {
 109                         pci_write_config_dword(mvi->pdev, PCR_PHY_CTL2, tmp);
 110                         mdelay(10);
 111                         pci_write_config_dword(mvi->pdev, PCR_PHY_CTL2, reg);
 112                 }
 113         } else {
 114                 mw32(MVS_PHY_CTL, tmp);
 115                 mdelay(10);
 116                 mw32(MVS_PHY_CTL, reg);
 117         }
 118 }
 119
 120 static void mvs_64xx_phy_reset(struct mvs_info *mvi, u32 phy_id, int hard)
 121 {
 122         u32 tmp;
 123         tmp = mvs_read_port_irq_stat(mvi, phy_id);
 124         tmp &= ~PHYEV_RDY_CH;
 125         mvs_write_port_irq_stat(mvi, phy_id, tmp);
 126         tmp = mvs_read_phy_ctl(mvi, phy_id);
 127         if (hard == MVS_HARD_RESET)
 128                 tmp |= PHY_RST_HARD;
 129         else if (hard == MVS_SOFT_RESET)
 130                 tmp |= PHY_RST;
 131         mvs_write_phy_ctl(mvi, phy_id, tmp);
 132         if (hard) {
 133                 do {
 134                         tmp = mvs_read_phy_ctl(mvi, phy_id);
 135                 } while (tmp & PHY_RST_HARD);
 136         }
 137 }
 138
 139 static void
 140 mvs_64xx_clear_srs_irq(struct mvs_info *mvi, u8 reg_set, u8 clear_all)
 141 {
 142         void __iomem *regs = mvi->regs;
 143         u32 tmp;
 144         if (clear_all) {
 145                 tmp = mr32(MVS_INT_STAT_SRS_0);
 146                 if (tmp) {
 147                         printk(KERN_DEBUG "check SRS 0 %08X.\n", tmp);
 148                         mw32(MVS_INT_STAT_SRS_0, tmp);
 149                 }
 150         } else {
 151                 tmp = mr32(MVS_INT_STAT_SRS_0);
 152                 if (tmp &  (1 << (reg_set % 32))) {
 153                         printk(KERN_DEBUG "register set 0x%x was stopped.\n",
 154                                reg_set);
 155                         mw32(MVS_INT_STAT_SRS_0, 1 << (reg_set % 32));
 156                 }
 157         }
 158 }
 159
 160 static int mvs_64xx_chip_reset(struct mvs_info *mvi)
 161 {
 162         void __iomem *regs = mvi->regs;
 163         u32 tmp;
 164         int i;
 165
 166         /* make sure interrupts are masked immediately (paranoia) */
 167         mw32(MVS_GBL_CTL, 0);
 168         tmp = mr32(MVS_GBL_CTL);
 169
 170         /* Reset Controller */
 171         if (!(tmp & HBA_RST)) {
 172                 if (mvi->flags & MVF_PHY_PWR_FIX) {
 173                         pci_read_config_dword(mvi->pdev, PCR_PHY_CTL, &tmp);
 174                         tmp &= ~PCTL_PWR_OFF;
 175                         tmp |= PCTL_PHY_DSBL;
 176                         pci_write_config_dword(mvi->pdev, PCR_PHY_CTL, tmp);
 177
 178                         pci_read_config_dword(mvi->pdev, PCR_PHY_CTL2, &tmp);
 179                         tmp &= ~PCTL_PWR_OFF;
 180                         tmp |= PCTL_PHY_DSBL;
 181                         pci_write_config_dword(mvi->pdev, PCR_PHY_CTL2, tmp);
 182                 }
 183         }
 184
 185         /* make sure interrupts are masked immediately (paranoia) */
 186         mw32(MVS_GBL_CTL, 0);
 187         tmp = mr32(MVS_GBL_CTL);
 188
 189         /* Reset Controller */
 190         if (!(tmp & HBA_RST)) {
 191                 /* global reset, incl. COMRESET/H_RESET_N (self-clearing) */
 192                 mw32_f(MVS_GBL_CTL, HBA_RST);
 193         }
 194
 195         /* wait for reset to finish; timeout is just a guess */
 196         i = 1000;
 197         while (i-- > 0) {
 198                 msleep(10);
 199
 200                 if (!(mr32(MVS_GBL_CTL) & HBA_RST))
 201                         break;
 202         }
 203         if (mr32(MVS_GBL_CTL) & HBA_RST) {
 204                 dev_printk(KERN_ERR, mvi->dev, "HBA reset failed\n");
 205                 return -EBUSY;
 206         }
 207         return 0;
 208 }
 209
 210 static void mvs_64xx_phy_disable(struct mvs_info *mvi, u32 phy_id)
 211 {
 212         void __iomem *regs = mvi->regs;
 213         u32 tmp;
 214         if (!(mvi->flags & MVF_FLAG_SOC)) {
 215                 u32 offs;
 216                 if (phy_id < 4)
 217                         offs = PCR_PHY_CTL;
 218                 else {
 219                         offs = PCR_PHY_CTL2;
 220                         phy_id -= 4;
 221                 }
 222                 pci_read_config_dword(mvi->pdev, offs, &tmp);
 223                 tmp |= 1U << (PCTL_PHY_DSBL_OFFS + phy_id);
 224                 pci_write_config_dword(mvi->pdev, offs, tmp);
 225         } else {
 226                 tmp = mr32(MVS_PHY_CTL);
 227                 tmp |= 1U << (PCTL_PHY_DSBL_OFFS + phy_id);
 228                 mw32(MVS_PHY_CTL, tmp);
 229         }
 230 }
 231
 232 static void mvs_64xx_phy_enable(struct mvs_info *mvi, u32 phy_id)
 233 {
 234         void __iomem *regs = mvi->regs;
 235         u32 tmp;
 236         if (!(mvi->flags & MVF_FLAG_SOC)) {
 237                 u32 offs;
 238                 if (phy_id < 4)
 239                         offs = PCR_PHY_CTL;
 240                 else {
 241                         offs = PCR_PHY_CTL2;
 242                         phy_id -= 4;
 243                 }
 244                 pci_read_config_dword(mvi->pdev, offs, &tmp);
 245                 tmp &= ~(1U << (PCTL_PHY_DSBL_OFFS + phy_id));
 246                 pci_write_config_dword(mvi->pdev, offs, tmp);
 247         } else {
 248                 tmp = mr32(MVS_PHY_CTL);
 249                 tmp &= ~(1U << (PCTL_PHY_DSBL_OFFS + phy_id));
 250                 mw32(MVS_PHY_CTL, tmp);
 251         }
 252 }
 253
 254 static int mvs_64xx_init(struct mvs_info *mvi)
 255 {
 256         void __iomem *regs = mvi->regs;
 257         int i;
 258         u32 tmp, cctl;
 259
 260         if (mvi->pdev && mvi->pdev->revision == 0)
 261                 mvi->flags |= MVF_PHY_PWR_FIX;
 262         if (!(mvi->flags & MVF_FLAG_SOC)) {
 263                 mvs_show_pcie_usage(mvi);
 264                 tmp = mvs_64xx_chip_reset(mvi);
 265                 if (tmp)
 266                         return tmp;
 267         } else {
 268                 tmp = mr32(MVS_PHY_CTL);
 269                 tmp &= ~PCTL_PWR_OFF;
 270                 tmp |= PCTL_PHY_DSBL;
 271                 mw32(MVS_PHY_CTL, tmp);
 272         }
 273
 274         /* Init Chip */
 275         /* make sure RST is set; HBA_RST /should/ have done that for us */
 276         cctl = mr32(MVS_CTL) & 0xFFFF;
 277         if (cctl & CCTL_RST)
 278                 cctl &= ~CCTL_RST;
 279         else
 280                 mw32_f(MVS_CTL, cctl | CCTL_RST);
 281
 282         if (!(mvi->flags & MVF_FLAG_SOC)) {
 283                 /* write to device control _AND_ device status register */
 284                 pci_read_config_dword(mvi->pdev, PCR_DEV_CTRL, &tmp);
 285                 tmp &= ~PRD_REQ_MASK;
 286                 tmp |= PRD_REQ_SIZE;
 287                 pci_write_config_dword(mvi->pdev, PCR_DEV_CTRL, tmp);
 288
 289                 pci_read_config_dword(mvi->pdev, PCR_PHY_CTL, &tmp);
 290                 tmp &= ~PCTL_PWR_OFF;
 291                 tmp &= ~PCTL_PHY_DSBL;
 292                 pci_write_config_dword(mvi->pdev, PCR_PHY_CTL, tmp);
 293
 294                 pci_read_config_dword(mvi->pdev, PCR_PHY_CTL2, &tmp);
 295                 tmp &= PCTL_PWR_OFF;
 296                 tmp &= ~PCTL_PHY_DSBL;
 297                 pci_write_config_dword(mvi->pdev, PCR_PHY_CTL2, tmp);
 298         } else {
 299                 tmp = mr32(MVS_PHY_CTL);
 300                 tmp &= ~PCTL_PWR_OFF;
 301                 tmp |= PCTL_COM_ON;
 302                 tmp &= ~PCTL_PHY_DSBL;
 303                 tmp |= PCTL_LINK_RST;
 304                 mw32(MVS_PHY_CTL, tmp);
 305                 msleep(100);
 306                 tmp &= ~PCTL_LINK_RST;
 307                 mw32(MVS_PHY_CTL, tmp);
 308                 msleep(100);
 309         }
 310
 311         /* reset control */
 312         mw32(MVS_PCS, 0);               /* MVS_PCS */
 313         /* init phys */
 314         mvs_64xx_phy_hacks(mvi);
 315
 316         tmp = mvs_cr32(mvi, CMD_PHY_MODE_21);
 317         tmp &= 0x0000ffff;
 318         tmp |= 0x00fa0000;
 319         mvs_cw32(mvi, CMD_PHY_MODE_21, tmp);
 320
 321         /* enable auto port detection */
 322         mw32(MVS_GBL_PORT_TYPE, MODE_AUTO_DET_EN);
 323
 324         mw32(MVS_CMD_LIST_LO, mvi->slot_dma);
 325         mw32(MVS_CMD_LIST_HI, (mvi->slot_dma >> 16) >> 16);
 326
 327         mw32(MVS_RX_FIS_LO, mvi->rx_fis_dma);
 328         mw32(MVS_RX_FIS_HI, (mvi->rx_fis_dma >> 16) >> 16);
 329
 330         mw32(MVS_TX_CFG, MVS_CHIP_SLOT_SZ);
 331         mw32(MVS_TX_LO, mvi->tx_dma);
 332         mw32(MVS_TX_HI, (mvi->tx_dma >> 16) >> 16);
 333
 334         mw32(MVS_RX_CFG, MVS_RX_RING_SZ);
 335         mw32(MVS_RX_LO, mvi->rx_dma);
 336         mw32(MVS_RX_HI, (mvi->rx_dma >> 16) >> 16);
 337
 338         for (i = 0; i < mvi->chip->n_phy; i++) {
 339                 /* set phy local SAS address */
 340                 /* should set little endian SAS address to 64xx chip */
 341                 mvs_set_sas_addr(mvi, i, PHYR_ADDR_LO, PHYR_ADDR_HI,
 342                                 cpu_to_be64(mvi->phy[i].dev_sas_addr));
 343
 344                 mvs_64xx_enable_xmt(mvi, i);
 345
 346                 mvs_64xx_phy_reset(mvi, i, MVS_HARD_RESET);
 347                 msleep(500);
 348                 mvs_64xx_detect_porttype(mvi, i);
 349         }
 350         if (mvi->flags & MVF_FLAG_SOC) {
 351                 /* set select registers */
 352                 writel(0x0E008000, regs + 0x000);
 353                 writel(0x59000008, regs + 0x004);
 354                 writel(0x20, regs + 0x008);
 355                 writel(0x20, regs + 0x00c);
 356                 writel(0x20, regs + 0x010);
 357                 writel(0x20, regs + 0x014);
 358                 writel(0x20, regs + 0x018);
 359                 writel(0x20, regs + 0x01c);
 360         }
 361         for (i = 0; i < mvi->chip->n_phy; i++) {
 362                 /* clear phy int status */
 363                 tmp = mvs_read_port_irq_stat(mvi, i);
 364                 tmp &= ~PHYEV_SIG_FIS;
 365                 mvs_write_port_irq_stat(mvi, i, tmp);
 366
 367                 /* set phy int mask */
 368                 tmp = PHYEV_RDY_CH | PHYEV_BROAD_CH | PHYEV_UNASSOC_FIS |
 369                         PHYEV_ID_DONE | PHYEV_DCDR_ERR | PHYEV_CRC_ERR |
 370                         PHYEV_DEC_ERR;
 371                 mvs_write_port_irq_mask(mvi, i, tmp);
 372
 373                 msleep(100);
 374                 mvs_update_phyinfo(mvi, i, 1);
 375         }
 376
 377         /* little endian for open address and command table, etc. */
 378         cctl = mr32(MVS_CTL);
 379         cctl |= CCTL_ENDIAN_CMD;
 380         cctl |= CCTL_ENDIAN_DATA;
 381         cctl &= ~CCTL_ENDIAN_OPEN;
 382         cctl |= CCTL_ENDIAN_RSP;
 383         mw32_f(MVS_CTL, cctl);
 384
 385         /* reset CMD queue */
 386         tmp = mr32(MVS_PCS);
 387         tmp |= PCS_CMD_RST;
 388         tmp &= ~PCS_SELF_CLEAR;
 389         mw32(MVS_PCS, tmp);
 390         /*
 391          * the max count is 0x1ff, while our max slot is 0x200,
 392          * it will make count 0.
 393          */
 394         tmp = 0;
 395         if (MVS_CHIP_SLOT_SZ > 0x1ff)
 396                 mw32(MVS_INT_COAL, 0x1ff | COAL_EN);
 397         else
 398                 mw32(MVS_INT_COAL, MVS_CHIP_SLOT_SZ | COAL_EN);
 399
 400         tmp = 0x10000 | interrupt_coalescing;
 401         mw32(MVS_INT_COAL_TMOUT, tmp);
 402
 403         /* ladies and gentlemen, start your engines */
 404         mw32(MVS_TX_CFG, 0);
 405         mw32(MVS_TX_CFG, MVS_CHIP_SLOT_SZ | TX_EN);
 406         mw32(MVS_RX_CFG, MVS_RX_RING_SZ | RX_EN);
 407         /* enable CMD/CMPL_Q/RESP mode */
 408         mw32(MVS_PCS, PCS_SATA_RETRY | PCS_FIS_RX_EN |
 409                 PCS_CMD_EN | PCS_CMD_STOP_ERR);
 410
 411         /* enable completion queue interrupt */
 412         tmp = (CINT_PORT_MASK | CINT_DONE | CINT_MEM | CINT_SRS | CINT_CI_STOP |
 413                 CINT_DMA_PCIE);
 414
 415         mw32(MVS_INT_MASK, tmp);
 416
 417         /* Enable SRS interrupt */
 418         mw32(MVS_INT_MASK_SRS_0, 0xFFFF);
 419
 420         return 0;
 421 }
 422
 423 static int mvs_64xx_ioremap(struct mvs_info *mvi)
 424 {
 425         if (!mvs_ioremap(mvi, 4, 2))
 426                 return 0;
 427         return -1;
 428 }
 429
 430 static void mvs_64xx_iounmap(struct mvs_info *mvi)
 431 {
 432         mvs_iounmap(mvi->regs);
 433         mvs_iounmap(mvi->regs_ex);
 434 }
 435
 436 static void mvs_64xx_interrupt_enable(struct mvs_info *mvi)
 437 {
 438         void __iomem *regs = mvi->regs;
 439         u32 tmp;
 440
 441         tmp = mr32(MVS_GBL_CTL);
 442         mw32(MVS_GBL_CTL, tmp | INT_EN);
 443 }
 444
 445 static void mvs_64xx_interrupt_disable(struct mvs_info *mvi)
 446 {
 447         void __iomem *regs = mvi->regs;
 448         u32 tmp;
 449
 450         tmp = mr32(MVS_GBL_CTL);
 451         mw32(MVS_GBL_CTL, tmp & ~INT_EN);
 452 }
 453
 454 static u32 mvs_64xx_isr_status(struct mvs_info *mvi, int irq)
 455 {
 456         void __iomem *regs = mvi->regs;
 457         u32 stat;
 458
 459         if (!(mvi->flags & MVF_FLAG_SOC)) {
 460                 stat = mr32(MVS_GBL_INT_STAT);
 461
 462                 if (stat == 0 || stat == 0xffffffff)
 463                         return 0;
 464         } else
 465                 stat = 1;
 466         return stat;
 467 }
 468
 469 static irqreturn_t mvs_64xx_isr(struct mvs_info *mvi, int irq, u32 stat)
 470 {
 471         void __iomem *regs = mvi->regs;
 472
 473         /* clear CMD_CMPLT ASAP */
 474         mw32_f(MVS_INT_STAT, CINT_DONE);
 475
 476         spin_lock(&mvi->lock);
 477         mvs_int_full(mvi);
 478         spin_unlock(&mvi->lock);
 479
 480         return IRQ_HANDLED;
 481 }
 482
 483 static void mvs_64xx_command_active(struct mvs_info *mvi, u32 slot_idx)
 484 {
 485         u32 tmp;
 486         mvs_cw32(mvi, 0x40 + (slot_idx >> 3), 1 << (slot_idx % 32));
 487         mvs_cw32(mvi, 0x00 + (slot_idx >> 3), 1 << (slot_idx % 32));
 488         do {
 489                 tmp = mvs_cr32(mvi, 0x00 + (slot_idx >> 3));
 490         } while (tmp & 1 << (slot_idx % 32));
 491         do {
 492                 tmp = mvs_cr32(mvi, 0x40 + (slot_idx >> 3));
 493         } while (tmp & 1 << (slot_idx % 32));
 494 }
 495
 496 static void mvs_64xx_issue_stop(struct mvs_info *mvi, enum mvs_port_type type,
 497                                 u32 tfs)
 498 {
 499         void __iomem *regs = mvi->regs;
 500         u32 tmp;
 501
 502         if (type == PORT_TYPE_SATA) {
 503                 tmp = mr32(MVS_INT_STAT_SRS_0) | (1U << tfs);
 504                 mw32(MVS_INT_STAT_SRS_0, tmp);
 505         }
 506         mw32(MVS_INT_STAT, CINT_CI_STOP);
 507         tmp = mr32(MVS_PCS) | 0xFF00;
 508         mw32(MVS_PCS, tmp);
 509 }
 510
 511 static void mvs_64xx_free_reg_set(struct mvs_info *mvi, u8 *tfs)
 512 {
 513         void __iomem *regs = mvi->regs;
 514         u32 tmp, offs;
 515
 516         if (*tfs == MVS_ID_NOT_MAPPED)
 517                 return;
 518
 519         offs = 1U << ((*tfs & 0x0f) + PCS_EN_SATA_REG_SHIFT);
 520         if (*tfs < 16) {
 521                 tmp = mr32(MVS_PCS);
 522                 mw32(MVS_PCS, tmp & ~offs);
 523         } else {
 524                 tmp = mr32(MVS_CTL);
 525                 mw32(MVS_CTL, tmp & ~offs);
 526         }
 527
 528         tmp = mr32(MVS_INT_STAT_SRS_0) & (1U << *tfs);
 529         if (tmp)
 530                 mw32(MVS_INT_STAT_SRS_0, tmp);
 531
 532         *tfs = MVS_ID_NOT_MAPPED;
 533         return;
 534 }
 535
 536 static u8 mvs_64xx_assign_reg_set(struct mvs_info *mvi, u8 *tfs)
 537 {
 538         int i;
 539         u32 tmp, offs;
 540         void __iomem *regs = mvi->regs;
 541
 542         if (*tfs != MVS_ID_NOT_MAPPED)
 543                 return 0;
 544
 545         tmp = mr32(MVS_PCS);
 546
 547         for (i = 0; i < mvi->chip->srs_sz; i++) {
 548                 if (i == 16)
 549                         tmp = mr32(MVS_CTL);
 550                 offs = 1U << ((i & 0x0f) + PCS_EN_SATA_REG_SHIFT);
 551                 if (!(tmp & offs)) {
 552                         *tfs = i;
 553
 554                         if (i < 16)
 555                                 mw32(MVS_PCS, tmp | offs);
 556                         else
 557                                 mw32(MVS_CTL, tmp | offs);
 558                         tmp = mr32(MVS_INT_STAT_SRS_0) & (1U << i);
 559                         if (tmp)
 560                                 mw32(MVS_INT_STAT_SRS_0, tmp);
 561                         return 0;
 562                 }
 563         }
 564         return MVS_ID_NOT_MAPPED;
 565 }
 566
 567 static void mvs_64xx_make_prd(struct scatterlist *scatter, int nr, void *prd)
 568 {
 569         int i;
 570         struct scatterlist *sg;
 571         struct mvs_prd *buf_prd = prd;
 572         for_each_sg(scatter, sg, nr, i) {
 573                 buf_prd->addr = cpu_to_le64(sg_dma_address(sg));
 574                 buf_prd->len = cpu_to_le32(sg_dma_len(sg));
 575                 buf_prd++;
 576         }
 577 }
 578
 579 static int mvs_64xx_oob_done(struct mvs_info *mvi, int i)
 580 {
 581         u32 phy_st;
 582         mvs_write_port_cfg_addr(mvi, i,
 583                         PHYR_PHY_STAT);
 584         phy_st = mvs_read_port_cfg_data(mvi, i);
 585         if (phy_st & PHY_OOB_DTCTD)
 586                 return 1;
 587         return 0;
 588 }
 589
 590 static void mvs_64xx_fix_phy_info(struct mvs_info *mvi, int i,
 591                                 struct sas_identify_frame *id)
 592
 593 {
 594         struct mvs_phy *phy = &mvi->phy[i];
 595         struct asd_sas_phy *sas_phy = &phy->sas_phy;
 596
 597         sas_phy->linkrate =
 598                 (phy->phy_status & PHY_NEG_SPP_PHYS_LINK_RATE_MASK) >>
 599                         PHY_NEG_SPP_PHYS_LINK_RATE_MASK_OFFSET;
 600
 601         phy->minimum_linkrate =
 602                 (phy->phy_status &
 603                         PHY_MIN_SPP_PHYS_LINK_RATE_MASK) >> 8;
 604         phy->maximum_linkrate =
 605                 (phy->phy_status &
 606                         PHY_MAX_SPP_PHYS_LINK_RATE_MASK) >> 12;
 607
 608         mvs_write_port_cfg_addr(mvi, i, PHYR_IDENTIFY);
 609         phy->dev_info = mvs_read_port_cfg_data(mvi, i);
 610
 611         mvs_write_port_cfg_addr(mvi, i, PHYR_ATT_DEV_INFO);
 612         phy->att_dev_info = mvs_read_port_cfg_data(mvi, i);
 613
 614         mvs_write_port_cfg_addr(mvi, i, PHYR_ATT_ADDR_HI);
 615         phy->att_dev_sas_addr =
 616              (u64) mvs_read_port_cfg_data(mvi, i) << 32;
 617         mvs_write_port_cfg_addr(mvi, i, PHYR_ATT_ADDR_LO);
 618         phy->att_dev_sas_addr |= mvs_read_port_cfg_data(mvi, i);
 619         phy->att_dev_sas_addr = SAS_ADDR(&phy->att_dev_sas_addr);
 620 }
 621
 622 static void mvs_64xx_phy_work_around(struct mvs_info *mvi, int i)
 623 {
 624         u32 tmp;
 625         struct mvs_phy *phy = &mvi->phy[i];
 626         mvs_write_port_vsr_addr(mvi, i, VSR_PHY_MODE6);
 627         tmp = mvs_read_port_vsr_data(mvi, i);
 628         if (((phy->phy_status & PHY_NEG_SPP_PHYS_LINK_RATE_MASK) >>
 629              PHY_NEG_SPP_PHYS_LINK_RATE_MASK_OFFSET) ==
 630                 SAS_LINK_RATE_1_5_GBPS)
 631                 tmp &= ~PHY_MODE6_LATECLK;
 632         else
 633                 tmp |= PHY_MODE6_LATECLK;
 634         mvs_write_port_vsr_data(mvi, i, tmp);
 635 }
 636
 637 static void mvs_64xx_phy_set_link_rate(struct mvs_info *mvi, u32 phy_id,
 638                         struct sas_phy_linkrates *rates)
 639 {
 640         u32 lrmin = 0, lrmax = 0;
 641         u32 tmp;
 642
 643         tmp = mvs_read_phy_ctl(mvi, phy_id);
 644         lrmin = (rates->minimum_linkrate << 8);
 645         lrmax = (rates->maximum_linkrate << 12);
 646
 647         if (lrmin) {
 648                 tmp &= ~(0xf << 8);
 649                 tmp |= lrmin;
 650         }
 651         if (lrmax) {
 652                 tmp &= ~(0xf << 12);
 653                 tmp |= lrmax;
 654         }
 655         mvs_write_phy_ctl(mvi, phy_id, tmp);
 656         mvs_64xx_phy_reset(mvi, phy_id, MVS_HARD_RESET);
 657 }
 658
 659 static void mvs_64xx_clear_active_cmds(struct mvs_info *mvi)
 660 {
 661         u32 tmp;
 662         void __iomem *regs = mvi->regs;
 663         tmp = mr32(MVS_PCS);
 664         mw32(MVS_PCS, tmp & 0xFFFF);
 665         mw32(MVS_PCS, tmp);
 666         tmp = mr32(MVS_CTL);
 667         mw32(MVS_CTL, tmp & 0xFFFF);
 668         mw32(MVS_CTL, tmp);
 669 }
 670
 671
 672 static u32 mvs_64xx_spi_read_data(struct mvs_info *mvi)
 673 {
 674         void __iomem *regs = mvi->regs_ex;
 675         return ior32(SPI_DATA_REG_64XX);
 676 }
 677
 678 static void mvs_64xx_spi_write_data(struct mvs_info *mvi, u32 data)
 679 {
 680         void __iomem *regs = mvi->regs_ex;
 681          iow32(SPI_DATA_REG_64XX, data);
 682 }
 683
 684
 685 static int mvs_64xx_spi_buildcmd(struct mvs_info *mvi,
 686                         u32      *dwCmd,
 687                         u8       cmd,
 688                         u8       read,
 689                         u8       length,
 690                         u32      addr
 691                         )
 692 {
 693         u32  dwTmp;
 694
 695         dwTmp = ((u32)cmd << 24) | ((u32)length << 19);
 696         if (read)
 697                 dwTmp |= 1U<<23;
 698
 699         if (addr != MV_MAX_U32) {
 700                 dwTmp |= 1U<<22;
 701                 dwTmp |= (addr & 0x0003FFFF);
 702         }
 703
 704         *dwCmd = dwTmp;
 705         return 0;
 706 }
 707
 708
 709 static int mvs_64xx_spi_issuecmd(struct mvs_info *mvi, u32 cmd)
 710 {
 711         void __iomem *regs = mvi->regs_ex;
 712         int     retry;
 713
 714         for (retry = 0; retry < 1; retry++) {
 715                 iow32(SPI_CTRL_REG_64XX, SPI_CTRL_VENDOR_ENABLE);
 716                 iow32(SPI_CMD_REG_64XX, cmd);
 717                 iow32(SPI_CTRL_REG_64XX,
 718                         SPI_CTRL_VENDOR_ENABLE | SPI_CTRL_SPISTART);
 719         }
 720
 721         return 0;
 722 }
 723
 724 static int mvs_64xx_spi_waitdataready(struct mvs_info *mvi, u32 timeout)
 725 {
 726         void __iomem *regs = mvi->regs_ex;
 727         u32 i, dwTmp;
 728
 729         for (i = 0; i < timeout; i++) {
 730                 dwTmp = ior32(SPI_CTRL_REG_64XX);
 731                 if (!(dwTmp & SPI_CTRL_SPISTART))
 732                         return 0;
 733                 msleep(10);
 734         }
 735
 736         return -1;
 737 }
 738
 739 static void mvs_64xx_fix_dma(struct mvs_info *mvi, u32 phy_mask,
 740                                 int buf_len, int from, void *prd)
 741 {
 742         int i;
 743         struct mvs_prd *buf_prd = prd;
 744         dma_addr_t buf_dma = mvi->bulk_buffer_dma;
 745
 746         buf_prd += from;
 747         for (i = 0; i < MAX_SG_ENTRY - from; i++) {
 748                 buf_prd->addr = cpu_to_le64(buf_dma);
 749                 buf_prd->len = cpu_to_le32(buf_len);
 750                 ++buf_prd;
 751         }
 752 }
 753
 754 static void mvs_64xx_tune_interrupt(struct mvs_info *mvi, u32 time)
 755 {
 756         void __iomem *regs = mvi->regs;
 757         u32 tmp = 0;
 758         /*
 759          * the max count is 0x1ff, while our max slot is 0x200,
 760          * it will make count 0.
 761          */
 762         if (time == 0) {
 763                 mw32(MVS_INT_COAL, 0);
 764                 mw32(MVS_INT_COAL_TMOUT, 0x10000);
 765         } else {
 766                 if (MVS_CHIP_SLOT_SZ > 0x1ff)
 767                         mw32(MVS_INT_COAL, 0x1ff|COAL_EN);
 768                 else
 769                         mw32(MVS_INT_COAL, MVS_CHIP_SLOT_SZ|COAL_EN);
 770
 771                 tmp = 0x10000 | time;
 772                 mw32(MVS_INT_COAL_TMOUT, tmp);
 773         }
 774 }
 775
 776 const struct mvs_dispatch mvs_64xx_dispatch = {
 777         "mv64xx",
 778         mvs_64xx_init,
 779         NULL,
 780         mvs_64xx_ioremap,
 781         mvs_64xx_iounmap,
 782         mvs_64xx_isr,
 783         mvs_64xx_isr_status,
 784         mvs_64xx_interrupt_enable,
 785         mvs_64xx_interrupt_disable,
 786         mvs_read_phy_ctl,
 787         mvs_write_phy_ctl,
 788         mvs_read_port_cfg_data,
 789         mvs_write_port_cfg_data,
 790         mvs_write_port_cfg_addr,
 791         mvs_read_port_vsr_data,
 792         mvs_write_port_vsr_data,
 793         mvs_write_port_vsr_addr,
 794         mvs_read_port_irq_stat,
 795         mvs_write_port_irq_stat,
 796         mvs_read_port_irq_mask,
 797         mvs_write_port_irq_mask,
 798         mvs_64xx_command_active,
 799         mvs_64xx_clear_srs_irq,
 800         mvs_64xx_issue_stop,
 801         mvs_start_delivery,
 802         mvs_rx_update,
 803         mvs_int_full,
 804         mvs_64xx_assign_reg_set,
 805         mvs_64xx_free_reg_set,
 806         mvs_get_prd_size,
 807         mvs_get_prd_count,
 808         mvs_64xx_make_prd,
 809         mvs_64xx_detect_porttype,
 810         mvs_64xx_oob_done,
 811         mvs_64xx_fix_phy_info,
 812         mvs_64xx_phy_work_around,
 813         mvs_64xx_phy_set_link_rate,
 814         mvs_hw_max_link_rate,
 815         mvs_64xx_phy_disable,
 816         mvs_64xx_phy_enable,
 817         mvs_64xx_phy_reset,
 818         mvs_64xx_stp_reset,
 819         mvs_64xx_clear_active_cmds,
 820         mvs_64xx_spi_read_data,
 821         mvs_64xx_spi_write_data,
 822         mvs_64xx_spi_buildcmd,
 823         mvs_64xx_spi_issuecmd,
 824         mvs_64xx_spi_waitdataready,
 825         mvs_64xx_fix_dma,
 826         mvs_64xx_tune_interrupt,
 827         NULL,
 828 };
 829