drivers/vme/bridges/vme

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This source file includes following definitions.
reg_join
reg_split
tsi148_DMA_irqhandler
tsi148_LM_irqhandler
tsi148_MB_irqhandler
tsi148_PERR_irqhandler
tsi148_VERR_irqhandler
tsi148_IACK_irqhandler
tsi148_VIRQ_irqhandler
tsi148_irqhandler
tsi148_irq_init
tsi148_irq_exit
tsi148_iack_received
tsi148_irq_set
tsi148_irq_generate
tsi148_slave_set
tsi148_slave_get
tsi148_alloc_resource
tsi148_free_resource
tsi148_master_set
__tsi148_master_get
tsi148_master_get
tsi148_master_read
tsi148_master_write
tsi148_master_rmw
tsi148_dma_set_vme_src_attributes
tsi148_dma_set_vme_dest_attributes
tsi148_dma_list_add
tsi148_dma_busy
tsi148_dma_list_exec
tsi148_dma_list_empty
tsi148_lm_set
tsi148_lm_get
tsi148_lm_attach
tsi148_lm_detach
tsi148_slot_get
tsi148_alloc_consistent
tsi148_free_consistent
tsi148_crcsr_init
tsi148_crcsr_exit
tsi148_probe
tsi148_remove
   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Support for the Tundra TSI148 VME-PCI Bridge Chip
   4  *
   5  * Author: Martyn Welch <martyn.welch@ge.com>
   6  * Copyright 2008 GE Intelligent Platforms Embedded Systems, Inc.
   7  *
   8  * Based on work by Tom Armistead and Ajit Prem
   9  * Copyright 2004 Motorola Inc.
  10  */
  11 
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/mm.h>
  15 #include <linux/types.h>
  16 #include <linux/errno.h>
  17 #include <linux/proc_fs.h>
  18 #include <linux/pci.h>
  19 #include <linux/poll.h>
  20 #include <linux/dma-mapping.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/spinlock.h>
  23 #include <linux/sched.h>
  24 #include <linux/slab.h>
  25 #include <linux/time.h>
  26 #include <linux/io.h>
  27 #include <linux/uaccess.h>
  28 #include <linux/byteorder/generic.h>
  29 #include <linux/vme.h>
  30 
  31 #include "../vme_bridge.h"
  32 #include "vme_tsi148.h"
  33 
  34 static int tsi148_probe(struct pci_dev *, const struct pci_device_id *);
  35 static void tsi148_remove(struct pci_dev *);
  36 
  37 
  38 /* Module parameter */
  39 static bool err_chk;
  40 static int geoid;
  41 
  42 static const char driver_name[] = "vme_tsi148";
  43 
  44 static const struct pci_device_id tsi148_ids[] = {
  45         { PCI_DEVICE(PCI_VENDOR_ID_TUNDRA, PCI_DEVICE_ID_TUNDRA_TSI148) },
  46         { },
  47 };
  48 
  49 MODULE_DEVICE_TABLE(pci, tsi148_ids);
  50 
  51 static struct pci_driver tsi148_driver = {
  52         .name = driver_name,
  53         .id_table = tsi148_ids,
  54         .probe = tsi148_probe,
  55         .remove = tsi148_remove,
  56 };
  57 
  58 static void reg_join(unsigned int high, unsigned int low,
  59         unsigned long long *variable)
  60 {
  61         *variable = (unsigned long long)high << 32;
  62         *variable |= (unsigned long long)low;
  63 }
  64 
  65 static void reg_split(unsigned long long variable, unsigned int *high,
  66         unsigned int *low)
  67 {
  68         *low = (unsigned int)variable & 0xFFFFFFFF;
  69         *high = (unsigned int)(variable >> 32);
  70 }
  71 
  72 /*
  73  * Wakes up DMA queue.
  74  */
  75 static u32 tsi148_DMA_irqhandler(struct tsi148_driver *bridge,
  76         int channel_mask)
  77 {
  78         u32 serviced = 0;
  79 
  80         if (channel_mask & TSI148_LCSR_INTS_DMA0S) {
  81                 wake_up(&bridge->dma_queue[0]);
  82                 serviced |= TSI148_LCSR_INTC_DMA0C;
  83         }
  84         if (channel_mask & TSI148_LCSR_INTS_DMA1S) {
  85                 wake_up(&bridge->dma_queue[1]);
  86                 serviced |= TSI148_LCSR_INTC_DMA1C;
  87         }
  88 
  89         return serviced;
  90 }
  91 
  92 /*
  93  * Wake up location monitor queue
  94  */
  95 static u32 tsi148_LM_irqhandler(struct tsi148_driver *bridge, u32 stat)
  96 {
  97         int i;
  98         u32 serviced = 0;
  99 
 100         for (i = 0; i < 4; i++) {
 101                 if (stat & TSI148_LCSR_INTS_LMS[i]) {
 102                         /* We only enable interrupts if the callback is set */
 103                         bridge->lm_callback[i](bridge->lm_data[i]);
 104                         serviced |= TSI148_LCSR_INTC_LMC[i];
 105                 }
 106         }
 107 
 108         return serviced;
 109 }
 110 
 111 /*
 112  * Wake up mail box queue.
 113  *
 114  * XXX This functionality is not exposed up though API.
 115  */
 116 static u32 tsi148_MB_irqhandler(struct vme_bridge *tsi148_bridge, u32 stat)
 117 {
 118         int i;
 119         u32 val;
 120         u32 serviced = 0;
 121         struct tsi148_driver *bridge;
 122 
 123         bridge = tsi148_bridge->driver_priv;
 124 
 125         for (i = 0; i < 4; i++) {
 126                 if (stat & TSI148_LCSR_INTS_MBS[i]) {
 127                         val = ioread32be(bridge->base + TSI148_GCSR_MBOX[i]);
 128                         dev_err(tsi148_bridge->parent, "VME Mailbox %d received"
 129                                 ": 0x%x\n", i, val);
 130                         serviced |= TSI148_LCSR_INTC_MBC[i];
 131                 }
 132         }
 133 
 134         return serviced;
 135 }
 136 
 137 /*
 138  * Display error & status message when PERR (PCI) exception interrupt occurs.
 139  */
 140 static u32 tsi148_PERR_irqhandler(struct vme_bridge *tsi148_bridge)
 141 {
 142         struct tsi148_driver *bridge;
 143 
 144         bridge = tsi148_bridge->driver_priv;
 145 
 146         dev_err(tsi148_bridge->parent, "PCI Exception at address: 0x%08x:%08x, "
 147                 "attributes: %08x\n",
 148                 ioread32be(bridge->base + TSI148_LCSR_EDPAU),
 149                 ioread32be(bridge->base + TSI148_LCSR_EDPAL),
 150                 ioread32be(bridge->base + TSI148_LCSR_EDPAT));
 151 
 152         dev_err(tsi148_bridge->parent, "PCI-X attribute reg: %08x, PCI-X split "
 153                 "completion reg: %08x\n",
 154                 ioread32be(bridge->base + TSI148_LCSR_EDPXA),
 155                 ioread32be(bridge->base + TSI148_LCSR_EDPXS));
 156 
 157         iowrite32be(TSI148_LCSR_EDPAT_EDPCL, bridge->base + TSI148_LCSR_EDPAT);
 158 
 159         return TSI148_LCSR_INTC_PERRC;
 160 }
 161 
 162 /*
 163  * Save address and status when VME error interrupt occurs.
 164  */
 165 static u32 tsi148_VERR_irqhandler(struct vme_bridge *tsi148_bridge)
 166 {
 167         unsigned int error_addr_high, error_addr_low;
 168         unsigned long long error_addr;
 169         u32 error_attrib;
 170         int error_am;
 171         struct tsi148_driver *bridge;
 172 
 173         bridge = tsi148_bridge->driver_priv;
 174 
 175         error_addr_high = ioread32be(bridge->base + TSI148_LCSR_VEAU);
 176         error_addr_low = ioread32be(bridge->base + TSI148_LCSR_VEAL);
 177         error_attrib = ioread32be(bridge->base + TSI148_LCSR_VEAT);
 178         error_am = (error_attrib & TSI148_LCSR_VEAT_AM_M) >> 8;
 179 
 180         reg_join(error_addr_high, error_addr_low, &error_addr);
 181 
 182         /* Check for exception register overflow (we have lost error data) */
 183         if (error_attrib & TSI148_LCSR_VEAT_VEOF) {
 184                 dev_err(tsi148_bridge->parent, "VME Bus Exception Overflow "
 185                         "Occurred\n");
 186         }
 187 
 188         if (err_chk)
 189                 vme_bus_error_handler(tsi148_bridge, error_addr, error_am);
 190         else
 191                 dev_err(tsi148_bridge->parent,
 192                         "VME Bus Error at address: 0x%llx, attributes: %08x\n",
 193                         error_addr, error_attrib);
 194 
 195         /* Clear Status */
 196         iowrite32be(TSI148_LCSR_VEAT_VESCL, bridge->base + TSI148_LCSR_VEAT);
 197 
 198         return TSI148_LCSR_INTC_VERRC;
 199 }
 200 
 201 /*
 202  * Wake up IACK queue.
 203  */
 204 static u32 tsi148_IACK_irqhandler(struct tsi148_driver *bridge)
 205 {
 206         wake_up(&bridge->iack_queue);
 207 
 208         return TSI148_LCSR_INTC_IACKC;
 209 }
 210 
 211 /*
 212  * Calling VME bus interrupt callback if provided.
 213  */
 214 static u32 tsi148_VIRQ_irqhandler(struct vme_bridge *tsi148_bridge,
 215         u32 stat)
 216 {
 217         int vec, i, serviced = 0;
 218         struct tsi148_driver *bridge;
 219 
 220         bridge = tsi148_bridge->driver_priv;
 221 
 222         for (i = 7; i > 0; i--) {
 223                 if (stat & (1 << i)) {
 224                         /*
 225                          * Note: Even though the registers are defined as
 226                          * 32-bits in the spec, we only want to issue 8-bit
 227                          * IACK cycles on the bus, read from offset 3.
 228                          */
 229                         vec = ioread8(bridge->base + TSI148_LCSR_VIACK[i] + 3);
 230 
 231                         vme_irq_handler(tsi148_bridge, i, vec);
 232 
 233                         serviced |= (1 << i);
 234                 }
 235         }
 236 
 237         return serviced;
 238 }
 239 
 240 /*
 241  * Top level interrupt handler.  Clears appropriate interrupt status bits and
 242  * then calls appropriate sub handler(s).
 243  */
 244 static irqreturn_t tsi148_irqhandler(int irq, void *ptr)
 245 {
 246         u32 stat, enable, serviced = 0;
 247         struct vme_bridge *tsi148_bridge;
 248         struct tsi148_driver *bridge;
 249 
 250         tsi148_bridge = ptr;
 251 
 252         bridge = tsi148_bridge->driver_priv;
 253 
 254         /* Determine which interrupts are unmasked and set */
 255         enable = ioread32be(bridge->base + TSI148_LCSR_INTEO);
 256         stat = ioread32be(bridge->base + TSI148_LCSR_INTS);
 257 
 258         /* Only look at unmasked interrupts */
 259         stat &= enable;
 260 
 261         if (unlikely(!stat))
 262                 return IRQ_NONE;
 263 
 264         /* Call subhandlers as appropriate */
 265         /* DMA irqs */
 266         if (stat & (TSI148_LCSR_INTS_DMA1S | TSI148_LCSR_INTS_DMA0S))
 267                 serviced |= tsi148_DMA_irqhandler(bridge, stat);
 268 
 269         /* Location monitor irqs */
 270         if (stat & (TSI148_LCSR_INTS_LM3S | TSI148_LCSR_INTS_LM2S |
 271                         TSI148_LCSR_INTS_LM1S | TSI148_LCSR_INTS_LM0S))
 272                 serviced |= tsi148_LM_irqhandler(bridge, stat);
 273 
 274         /* Mail box irqs */
 275         if (stat & (TSI148_LCSR_INTS_MB3S | TSI148_LCSR_INTS_MB2S |
 276                         TSI148_LCSR_INTS_MB1S | TSI148_LCSR_INTS_MB0S))
 277                 serviced |= tsi148_MB_irqhandler(tsi148_bridge, stat);
 278 
 279         /* PCI bus error */
 280         if (stat & TSI148_LCSR_INTS_PERRS)
 281                 serviced |= tsi148_PERR_irqhandler(tsi148_bridge);
 282 
 283         /* VME bus error */
 284         if (stat & TSI148_LCSR_INTS_VERRS)
 285                 serviced |= tsi148_VERR_irqhandler(tsi148_bridge);
 286 
 287         /* IACK irq */
 288         if (stat & TSI148_LCSR_INTS_IACKS)
 289                 serviced |= tsi148_IACK_irqhandler(bridge);
 290 
 291         /* VME bus irqs */
 292         if (stat & (TSI148_LCSR_INTS_IRQ7S | TSI148_LCSR_INTS_IRQ6S |
 293                         TSI148_LCSR_INTS_IRQ5S | TSI148_LCSR_INTS_IRQ4S |
 294                         TSI148_LCSR_INTS_IRQ3S | TSI148_LCSR_INTS_IRQ2S |
 295                         TSI148_LCSR_INTS_IRQ1S))
 296                 serviced |= tsi148_VIRQ_irqhandler(tsi148_bridge, stat);
 297 
 298         /* Clear serviced interrupts */
 299         iowrite32be(serviced, bridge->base + TSI148_LCSR_INTC);
 300 
 301         return IRQ_HANDLED;
 302 }
 303 
 304 static int tsi148_irq_init(struct vme_bridge *tsi148_bridge)
 305 {
 306         int result;
 307         unsigned int tmp;
 308         struct pci_dev *pdev;
 309         struct tsi148_driver *bridge;
 310 
 311         pdev = to_pci_dev(tsi148_bridge->parent);
 312 
 313         bridge = tsi148_bridge->driver_priv;
 314 
 315         result = request_irq(pdev->irq,
 316                              tsi148_irqhandler,
 317                              IRQF_SHARED,
 318                              driver_name, tsi148_bridge);
 319         if (result) {
 320                 dev_err(tsi148_bridge->parent, "Can't get assigned pci irq "
 321                         "vector %02X\n", pdev->irq);
 322                 return result;
 323         }
 324 
 325         /* Enable and unmask interrupts */
 326         tmp = TSI148_LCSR_INTEO_DMA1EO | TSI148_LCSR_INTEO_DMA0EO |
 327                 TSI148_LCSR_INTEO_MB3EO | TSI148_LCSR_INTEO_MB2EO |
 328                 TSI148_LCSR_INTEO_MB1EO | TSI148_LCSR_INTEO_MB0EO |
 329                 TSI148_LCSR_INTEO_PERREO | TSI148_LCSR_INTEO_VERREO |
 330                 TSI148_LCSR_INTEO_IACKEO;
 331 
 332         /* This leaves the following interrupts masked.
 333          * TSI148_LCSR_INTEO_VIEEO
 334          * TSI148_LCSR_INTEO_SYSFLEO
 335          * TSI148_LCSR_INTEO_ACFLEO
 336          */
 337 
 338         /* Don't enable Location Monitor interrupts here - they will be
 339          * enabled when the location monitors are properly configured and
 340          * a callback has been attached.
 341          * TSI148_LCSR_INTEO_LM0EO
 342          * TSI148_LCSR_INTEO_LM1EO
 343          * TSI148_LCSR_INTEO_LM2EO
 344          * TSI148_LCSR_INTEO_LM3EO
 345          */
 346 
 347         /* Don't enable VME interrupts until we add a handler, else the board
 348          * will respond to it and we don't want that unless it knows how to
 349          * properly deal with it.
 350          * TSI148_LCSR_INTEO_IRQ7EO
 351          * TSI148_LCSR_INTEO_IRQ6EO
 352          * TSI148_LCSR_INTEO_IRQ5EO
 353          * TSI148_LCSR_INTEO_IRQ4EO
 354          * TSI148_LCSR_INTEO_IRQ3EO
 355          * TSI148_LCSR_INTEO_IRQ2EO
 356          * TSI148_LCSR_INTEO_IRQ1EO
 357          */
 358 
 359         iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
 360         iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
 361 
 362         return 0;
 363 }
 364 
 365 static void tsi148_irq_exit(struct vme_bridge *tsi148_bridge,
 366         struct pci_dev *pdev)
 367 {
 368         struct tsi148_driver *bridge = tsi148_bridge->driver_priv;
 369 
 370         /* Turn off interrupts */
 371         iowrite32be(0x0, bridge->base + TSI148_LCSR_INTEO);
 372         iowrite32be(0x0, bridge->base + TSI148_LCSR_INTEN);
 373 
 374         /* Clear all interrupts */
 375         iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_INTC);
 376 
 377         /* Detach interrupt handler */
 378         free_irq(pdev->irq, tsi148_bridge);
 379 }
 380 
 381 /*
 382  * Check to see if an IACk has been received, return true (1) or false (0).
 383  */
 384 static int tsi148_iack_received(struct tsi148_driver *bridge)
 385 {
 386         u32 tmp;
 387 
 388         tmp = ioread32be(bridge->base + TSI148_LCSR_VICR);
 389 
 390         if (tmp & TSI148_LCSR_VICR_IRQS)
 391                 return 0;
 392         else
 393                 return 1;
 394 }
 395 
 396 /*
 397  * Configure VME interrupt
 398  */
 399 static void tsi148_irq_set(struct vme_bridge *tsi148_bridge, int level,
 400         int state, int sync)
 401 {
 402         struct pci_dev *pdev;
 403         u32 tmp;
 404         struct tsi148_driver *bridge;
 405 
 406         bridge = tsi148_bridge->driver_priv;
 407 
 408         /* We need to do the ordering differently for enabling and disabling */
 409         if (state == 0) {
 410                 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
 411                 tmp &= ~TSI148_LCSR_INTEN_IRQEN[level - 1];
 412                 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
 413 
 414                 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
 415                 tmp &= ~TSI148_LCSR_INTEO_IRQEO[level - 1];
 416                 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
 417 
 418                 if (sync != 0) {
 419                         pdev = to_pci_dev(tsi148_bridge->parent);
 420                         synchronize_irq(pdev->irq);
 421                 }
 422         } else {
 423                 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
 424                 tmp |= TSI148_LCSR_INTEO_IRQEO[level - 1];
 425                 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
 426 
 427                 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
 428                 tmp |= TSI148_LCSR_INTEN_IRQEN[level - 1];
 429                 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
 430         }
 431 }
 432 
 433 /*
 434  * Generate a VME bus interrupt at the requested level & vector. Wait for
 435  * interrupt to be acked.
 436  */
 437 static int tsi148_irq_generate(struct vme_bridge *tsi148_bridge, int level,
 438         int statid)
 439 {
 440         u32 tmp;
 441         struct tsi148_driver *bridge;
 442 
 443         bridge = tsi148_bridge->driver_priv;
 444 
 445         mutex_lock(&bridge->vme_int);
 446 
 447         /* Read VICR register */
 448         tmp = ioread32be(bridge->base + TSI148_LCSR_VICR);
 449 
 450         /* Set Status/ID */
 451         tmp = (tmp & ~TSI148_LCSR_VICR_STID_M) |
 452                 (statid & TSI148_LCSR_VICR_STID_M);
 453         iowrite32be(tmp, bridge->base + TSI148_LCSR_VICR);
 454 
 455         /* Assert VMEbus IRQ */
 456         tmp = tmp | TSI148_LCSR_VICR_IRQL[level];
 457         iowrite32be(tmp, bridge->base + TSI148_LCSR_VICR);
 458 
 459         /* XXX Consider implementing a timeout? */
 460         wait_event_interruptible(bridge->iack_queue,
 461                 tsi148_iack_received(bridge));
 462 
 463         mutex_unlock(&bridge->vme_int);
 464 
 465         return 0;
 466 }
 467 
 468 /*
 469  * Initialize a slave window with the requested attributes.
 470  */
 471 static int tsi148_slave_set(struct vme_slave_resource *image, int enabled,
 472         unsigned long long vme_base, unsigned long long size,
 473         dma_addr_t pci_base, u32 aspace, u32 cycle)
 474 {
 475         unsigned int i, addr = 0, granularity = 0;
 476         unsigned int temp_ctl = 0;
 477         unsigned int vme_base_low, vme_base_high;
 478         unsigned int vme_bound_low, vme_bound_high;
 479         unsigned int pci_offset_low, pci_offset_high;
 480         unsigned long long vme_bound, pci_offset;
 481         struct vme_bridge *tsi148_bridge;
 482         struct tsi148_driver *bridge;
 483 
 484         tsi148_bridge = image->parent;
 485         bridge = tsi148_bridge->driver_priv;
 486 
 487         i = image->number;
 488 
 489         switch (aspace) {
 490         case VME_A16:
 491                 granularity = 0x10;
 492                 addr |= TSI148_LCSR_ITAT_AS_A16;
 493                 break;
 494         case VME_A24:
 495                 granularity = 0x1000;
 496                 addr |= TSI148_LCSR_ITAT_AS_A24;
 497                 break;
 498         case VME_A32:
 499                 granularity = 0x10000;
 500                 addr |= TSI148_LCSR_ITAT_AS_A32;
 501                 break;
 502         case VME_A64:
 503                 granularity = 0x10000;
 504                 addr |= TSI148_LCSR_ITAT_AS_A64;
 505                 break;
 506         default:
 507                 dev_err(tsi148_bridge->parent, "Invalid address space\n");
 508                 return -EINVAL;
 509                 break;
 510         }
 511 
 512         /* Convert 64-bit variables to 2x 32-bit variables */
 513         reg_split(vme_base, &vme_base_high, &vme_base_low);
 514 
 515         /*
 516          * Bound address is a valid address for the window, adjust
 517          * accordingly
 518          */
 519         vme_bound = vme_base + size - granularity;
 520         reg_split(vme_bound, &vme_bound_high, &vme_bound_low);
 521         pci_offset = (unsigned long long)pci_base - vme_base;
 522         reg_split(pci_offset, &pci_offset_high, &pci_offset_low);
 523 
 524         if (vme_base_low & (granularity - 1)) {
 525                 dev_err(tsi148_bridge->parent, "Invalid VME base alignment\n");
 526                 return -EINVAL;
 527         }
 528         if (vme_bound_low & (granularity - 1)) {
 529                 dev_err(tsi148_bridge->parent, "Invalid VME bound alignment\n");
 530                 return -EINVAL;
 531         }
 532         if (pci_offset_low & (granularity - 1)) {
 533                 dev_err(tsi148_bridge->parent, "Invalid PCI Offset "
 534                         "alignment\n");
 535                 return -EINVAL;
 536         }
 537 
 538         /*  Disable while we are mucking around */
 539         temp_ctl = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
 540                 TSI148_LCSR_OFFSET_ITAT);
 541         temp_ctl &= ~TSI148_LCSR_ITAT_EN;
 542         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_IT[i] +
 543                 TSI148_LCSR_OFFSET_ITAT);
 544 
 545         /* Setup mapping */
 546         iowrite32be(vme_base_high, bridge->base + TSI148_LCSR_IT[i] +
 547                 TSI148_LCSR_OFFSET_ITSAU);
 548         iowrite32be(vme_base_low, bridge->base + TSI148_LCSR_IT[i] +
 549                 TSI148_LCSR_OFFSET_ITSAL);
 550         iowrite32be(vme_bound_high, bridge->base + TSI148_LCSR_IT[i] +
 551                 TSI148_LCSR_OFFSET_ITEAU);
 552         iowrite32be(vme_bound_low, bridge->base + TSI148_LCSR_IT[i] +
 553                 TSI148_LCSR_OFFSET_ITEAL);
 554         iowrite32be(pci_offset_high, bridge->base + TSI148_LCSR_IT[i] +
 555                 TSI148_LCSR_OFFSET_ITOFU);
 556         iowrite32be(pci_offset_low, bridge->base + TSI148_LCSR_IT[i] +
 557                 TSI148_LCSR_OFFSET_ITOFL);
 558 
 559         /* Setup 2eSST speeds */
 560         temp_ctl &= ~TSI148_LCSR_ITAT_2eSSTM_M;
 561         switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
 562         case VME_2eSST160:
 563                 temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_160;
 564                 break;
 565         case VME_2eSST267:
 566                 temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_267;
 567                 break;
 568         case VME_2eSST320:
 569                 temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_320;
 570                 break;
 571         }
 572 
 573         /* Setup cycle types */
 574         temp_ctl &= ~(0x1F << 7);
 575         if (cycle & VME_BLT)
 576                 temp_ctl |= TSI148_LCSR_ITAT_BLT;
 577         if (cycle & VME_MBLT)
 578                 temp_ctl |= TSI148_LCSR_ITAT_MBLT;
 579         if (cycle & VME_2eVME)
 580                 temp_ctl |= TSI148_LCSR_ITAT_2eVME;
 581         if (cycle & VME_2eSST)
 582                 temp_ctl |= TSI148_LCSR_ITAT_2eSST;
 583         if (cycle & VME_2eSSTB)
 584                 temp_ctl |= TSI148_LCSR_ITAT_2eSSTB;
 585 
 586         /* Setup address space */
 587         temp_ctl &= ~TSI148_LCSR_ITAT_AS_M;
 588         temp_ctl |= addr;
 589 
 590         temp_ctl &= ~0xF;
 591         if (cycle & VME_SUPER)
 592                 temp_ctl |= TSI148_LCSR_ITAT_SUPR ;
 593         if (cycle & VME_USER)
 594                 temp_ctl |= TSI148_LCSR_ITAT_NPRIV;
 595         if (cycle & VME_PROG)
 596                 temp_ctl |= TSI148_LCSR_ITAT_PGM;
 597         if (cycle & VME_DATA)
 598                 temp_ctl |= TSI148_LCSR_ITAT_DATA;
 599 
 600         /* Write ctl reg without enable */
 601         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_IT[i] +
 602                 TSI148_LCSR_OFFSET_ITAT);
 603 
 604         if (enabled)
 605                 temp_ctl |= TSI148_LCSR_ITAT_EN;
 606 
 607         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_IT[i] +
 608                 TSI148_LCSR_OFFSET_ITAT);
 609 
 610         return 0;
 611 }
 612 
 613 /*
 614  * Get slave window configuration.
 615  */
 616 static int tsi148_slave_get(struct vme_slave_resource *image, int *enabled,
 617         unsigned long long *vme_base, unsigned long long *size,
 618         dma_addr_t *pci_base, u32 *aspace, u32 *cycle)
 619 {
 620         unsigned int i, granularity = 0, ctl = 0;
 621         unsigned int vme_base_low, vme_base_high;
 622         unsigned int vme_bound_low, vme_bound_high;
 623         unsigned int pci_offset_low, pci_offset_high;
 624         unsigned long long vme_bound, pci_offset;
 625         struct tsi148_driver *bridge;
 626 
 627         bridge = image->parent->driver_priv;
 628 
 629         i = image->number;
 630 
 631         /* Read registers */
 632         ctl = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
 633                 TSI148_LCSR_OFFSET_ITAT);
 634 
 635         vme_base_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
 636                 TSI148_LCSR_OFFSET_ITSAU);
 637         vme_base_low = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
 638                 TSI148_LCSR_OFFSET_ITSAL);
 639         vme_bound_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
 640                 TSI148_LCSR_OFFSET_ITEAU);
 641         vme_bound_low = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
 642                 TSI148_LCSR_OFFSET_ITEAL);
 643         pci_offset_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
 644                 TSI148_LCSR_OFFSET_ITOFU);
 645         pci_offset_low = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
 646                 TSI148_LCSR_OFFSET_ITOFL);
 647 
 648         /* Convert 64-bit variables to 2x 32-bit variables */
 649         reg_join(vme_base_high, vme_base_low, vme_base);
 650         reg_join(vme_bound_high, vme_bound_low, &vme_bound);
 651         reg_join(pci_offset_high, pci_offset_low, &pci_offset);
 652 
 653         *pci_base = (dma_addr_t)(*vme_base + pci_offset);
 654 
 655         *enabled = 0;
 656         *aspace = 0;
 657         *cycle = 0;
 658 
 659         if (ctl & TSI148_LCSR_ITAT_EN)
 660                 *enabled = 1;
 661 
 662         if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A16) {
 663                 granularity = 0x10;
 664                 *aspace |= VME_A16;
 665         }
 666         if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A24) {
 667                 granularity = 0x1000;
 668                 *aspace |= VME_A24;
 669         }
 670         if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A32) {
 671                 granularity = 0x10000;
 672                 *aspace |= VME_A32;
 673         }
 674         if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A64) {
 675                 granularity = 0x10000;
 676                 *aspace |= VME_A64;
 677         }
 678 
 679         /* Need granularity before we set the size */
 680         *size = (unsigned long long)((vme_bound - *vme_base) + granularity);
 681 
 682 
 683         if ((ctl & TSI148_LCSR_ITAT_2eSSTM_M) == TSI148_LCSR_ITAT_2eSSTM_160)
 684                 *cycle |= VME_2eSST160;
 685         if ((ctl & TSI148_LCSR_ITAT_2eSSTM_M) == TSI148_LCSR_ITAT_2eSSTM_267)
 686                 *cycle |= VME_2eSST267;
 687         if ((ctl & TSI148_LCSR_ITAT_2eSSTM_M) == TSI148_LCSR_ITAT_2eSSTM_320)
 688                 *cycle |= VME_2eSST320;
 689 
 690         if (ctl & TSI148_LCSR_ITAT_BLT)
 691                 *cycle |= VME_BLT;
 692         if (ctl & TSI148_LCSR_ITAT_MBLT)
 693                 *cycle |= VME_MBLT;
 694         if (ctl & TSI148_LCSR_ITAT_2eVME)
 695                 *cycle |= VME_2eVME;
 696         if (ctl & TSI148_LCSR_ITAT_2eSST)
 697                 *cycle |= VME_2eSST;
 698         if (ctl & TSI148_LCSR_ITAT_2eSSTB)
 699                 *cycle |= VME_2eSSTB;
 700 
 701         if (ctl & TSI148_LCSR_ITAT_SUPR)
 702                 *cycle |= VME_SUPER;
 703         if (ctl & TSI148_LCSR_ITAT_NPRIV)
 704                 *cycle |= VME_USER;
 705         if (ctl & TSI148_LCSR_ITAT_PGM)
 706                 *cycle |= VME_PROG;
 707         if (ctl & TSI148_LCSR_ITAT_DATA)
 708                 *cycle |= VME_DATA;
 709 
 710         return 0;
 711 }
 712 
 713 /*
 714  * Allocate and map PCI Resource
 715  */
 716 static int tsi148_alloc_resource(struct vme_master_resource *image,
 717         unsigned long long size)
 718 {
 719         unsigned long long existing_size;
 720         int retval = 0;
 721         struct pci_dev *pdev;
 722         struct vme_bridge *tsi148_bridge;
 723 
 724         tsi148_bridge = image->parent;
 725 
 726         pdev = to_pci_dev(tsi148_bridge->parent);
 727 
 728         existing_size = (unsigned long long)(image->bus_resource.end -
 729                 image->bus_resource.start);
 730 
 731         /* If the existing size is OK, return */
 732         if ((size != 0) && (existing_size == (size - 1)))
 733                 return 0;
 734 
 735         if (existing_size != 0) {
 736                 iounmap(image->kern_base);
 737                 image->kern_base = NULL;
 738                 kfree(image->bus_resource.name);
 739                 release_resource(&image->bus_resource);
 740                 memset(&image->bus_resource, 0, sizeof(image->bus_resource));
 741         }
 742 
 743         /* Exit here if size is zero */
 744         if (size == 0)
 745                 return 0;
 746 
 747         if (!image->bus_resource.name) {
 748                 image->bus_resource.name = kmalloc(VMENAMSIZ+3, GFP_ATOMIC);
 749                 if (!image->bus_resource.name) {
 750                         retval = -ENOMEM;
 751                         goto err_name;
 752                 }
 753         }
 754 
 755         sprintf((char *)image->bus_resource.name, "%s.%d", tsi148_bridge->name,
 756                 image->number);
 757 
 758         image->bus_resource.start = 0;
 759         image->bus_resource.end = (unsigned long)size;
 760         image->bus_resource.flags = IORESOURCE_MEM;
 761 
 762         retval = pci_bus_alloc_resource(pdev->bus,
 763                 &image->bus_resource, size, 0x10000, PCIBIOS_MIN_MEM,
 764                 0, NULL, NULL);
 765         if (retval) {
 766                 dev_err(tsi148_bridge->parent, "Failed to allocate mem "
 767                         "resource for window %d size 0x%lx start 0x%lx\n",
 768                         image->number, (unsigned long)size,
 769                         (unsigned long)image->bus_resource.start);
 770                 goto err_resource;
 771         }
 772 
 773         image->kern_base = ioremap_nocache(
 774                 image->bus_resource.start, size);
 775         if (!image->kern_base) {
 776                 dev_err(tsi148_bridge->parent, "Failed to remap resource\n");
 777                 retval = -ENOMEM;
 778                 goto err_remap;
 779         }
 780 
 781         return 0;
 782 
 783 err_remap:
 784         release_resource(&image->bus_resource);
 785 err_resource:
 786         kfree(image->bus_resource.name);
 787         memset(&image->bus_resource, 0, sizeof(image->bus_resource));
 788 err_name:
 789         return retval;
 790 }
 791 
 792 /*
 793  * Free and unmap PCI Resource
 794  */
 795 static void tsi148_free_resource(struct vme_master_resource *image)
 796 {
 797         iounmap(image->kern_base);
 798         image->kern_base = NULL;
 799         release_resource(&image->bus_resource);
 800         kfree(image->bus_resource.name);
 801         memset(&image->bus_resource, 0, sizeof(image->bus_resource));
 802 }
 803 
 804 /*
 805  * Set the attributes of an outbound window.
 806  */
 807 static int tsi148_master_set(struct vme_master_resource *image, int enabled,
 808         unsigned long long vme_base, unsigned long long size, u32 aspace,
 809         u32 cycle, u32 dwidth)
 810 {
 811         int retval = 0;
 812         unsigned int i;
 813         unsigned int temp_ctl = 0;
 814         unsigned int pci_base_low, pci_base_high;
 815         unsigned int pci_bound_low, pci_bound_high;
 816         unsigned int vme_offset_low, vme_offset_high;
 817         unsigned long long pci_bound, vme_offset, pci_base;
 818         struct vme_bridge *tsi148_bridge;
 819         struct tsi148_driver *bridge;
 820         struct pci_bus_region region;
 821         struct pci_dev *pdev;
 822 
 823         tsi148_bridge = image->parent;
 824 
 825         bridge = tsi148_bridge->driver_priv;
 826 
 827         pdev = to_pci_dev(tsi148_bridge->parent);
 828 
 829         /* Verify input data */
 830         if (vme_base & 0xFFFF) {
 831                 dev_err(tsi148_bridge->parent, "Invalid VME Window "
 832                         "alignment\n");
 833                 retval = -EINVAL;
 834                 goto err_window;
 835         }
 836 
 837         if ((size == 0) && (enabled != 0)) {
 838                 dev_err(tsi148_bridge->parent, "Size must be non-zero for "
 839                         "enabled windows\n");
 840                 retval = -EINVAL;
 841                 goto err_window;
 842         }
 843 
 844         spin_lock(&image->lock);
 845 
 846         /* Let's allocate the resource here rather than further up the stack as
 847          * it avoids pushing loads of bus dependent stuff up the stack. If size
 848          * is zero, any existing resource will be freed.
 849          */
 850         retval = tsi148_alloc_resource(image, size);
 851         if (retval) {
 852                 spin_unlock(&image->lock);
 853                 dev_err(tsi148_bridge->parent, "Unable to allocate memory for "
 854                         "resource\n");
 855                 goto err_res;
 856         }
 857 
 858         if (size == 0) {
 859                 pci_base = 0;
 860                 pci_bound = 0;
 861                 vme_offset = 0;
 862         } else {
 863                 pcibios_resource_to_bus(pdev->bus, &region,
 864                                         &image->bus_resource);
 865                 pci_base = region.start;
 866 
 867                 /*
 868                  * Bound address is a valid address for the window, adjust
 869                  * according to window granularity.
 870                  */
 871                 pci_bound = pci_base + (size - 0x10000);
 872                 vme_offset = vme_base - pci_base;
 873         }
 874 
 875         /* Convert 64-bit variables to 2x 32-bit variables */
 876         reg_split(pci_base, &pci_base_high, &pci_base_low);
 877         reg_split(pci_bound, &pci_bound_high, &pci_bound_low);
 878         reg_split(vme_offset, &vme_offset_high, &vme_offset_low);
 879 
 880         if (pci_base_low & 0xFFFF) {
 881                 spin_unlock(&image->lock);
 882                 dev_err(tsi148_bridge->parent, "Invalid PCI base alignment\n");
 883                 retval = -EINVAL;
 884                 goto err_gran;
 885         }
 886         if (pci_bound_low & 0xFFFF) {
 887                 spin_unlock(&image->lock);
 888                 dev_err(tsi148_bridge->parent, "Invalid PCI bound alignment\n");
 889                 retval = -EINVAL;
 890                 goto err_gran;
 891         }
 892         if (vme_offset_low & 0xFFFF) {
 893                 spin_unlock(&image->lock);
 894                 dev_err(tsi148_bridge->parent, "Invalid VME Offset "
 895                         "alignment\n");
 896                 retval = -EINVAL;
 897                 goto err_gran;
 898         }
 899 
 900         i = image->number;
 901 
 902         /* Disable while we are mucking around */
 903         temp_ctl = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
 904                 TSI148_LCSR_OFFSET_OTAT);
 905         temp_ctl &= ~TSI148_LCSR_OTAT_EN;
 906         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_OT[i] +
 907                 TSI148_LCSR_OFFSET_OTAT);
 908 
 909         /* Setup 2eSST speeds */
 910         temp_ctl &= ~TSI148_LCSR_OTAT_2eSSTM_M;
 911         switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
 912         case VME_2eSST160:
 913                 temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_160;
 914                 break;
 915         case VME_2eSST267:
 916                 temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_267;
 917                 break;
 918         case VME_2eSST320:
 919                 temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_320;
 920                 break;
 921         }
 922 
 923         /* Setup cycle types */
 924         if (cycle & VME_BLT) {
 925                 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
 926                 temp_ctl |= TSI148_LCSR_OTAT_TM_BLT;
 927         }
 928         if (cycle & VME_MBLT) {
 929                 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
 930                 temp_ctl |= TSI148_LCSR_OTAT_TM_MBLT;
 931         }
 932         if (cycle & VME_2eVME) {
 933                 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
 934                 temp_ctl |= TSI148_LCSR_OTAT_TM_2eVME;
 935         }
 936         if (cycle & VME_2eSST) {
 937                 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
 938                 temp_ctl |= TSI148_LCSR_OTAT_TM_2eSST;
 939         }
 940         if (cycle & VME_2eSSTB) {
 941                 dev_warn(tsi148_bridge->parent, "Currently not setting "
 942                         "Broadcast Select Registers\n");
 943                 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
 944                 temp_ctl |= TSI148_LCSR_OTAT_TM_2eSSTB;
 945         }
 946 
 947         /* Setup data width */
 948         temp_ctl &= ~TSI148_LCSR_OTAT_DBW_M;
 949         switch (dwidth) {
 950         case VME_D16:
 951                 temp_ctl |= TSI148_LCSR_OTAT_DBW_16;
 952                 break;
 953         case VME_D32:
 954                 temp_ctl |= TSI148_LCSR_OTAT_DBW_32;
 955                 break;
 956         default:
 957                 spin_unlock(&image->lock);
 958                 dev_err(tsi148_bridge->parent, "Invalid data width\n");
 959                 retval = -EINVAL;
 960                 goto err_dwidth;
 961         }
 962 
 963         /* Setup address space */
 964         temp_ctl &= ~TSI148_LCSR_OTAT_AMODE_M;
 965         switch (aspace) {
 966         case VME_A16:
 967                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A16;
 968                 break;
 969         case VME_A24:
 970                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A24;
 971                 break;
 972         case VME_A32:
 973                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A32;
 974                 break;
 975         case VME_A64:
 976                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A64;
 977                 break;
 978         case VME_CRCSR:
 979                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_CRCSR;
 980                 break;
 981         case VME_USER1:
 982                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER1;
 983                 break;
 984         case VME_USER2:
 985                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER2;
 986                 break;
 987         case VME_USER3:
 988                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER3;
 989                 break;
 990         case VME_USER4:
 991                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER4;
 992                 break;
 993         default:
 994                 spin_unlock(&image->lock);
 995                 dev_err(tsi148_bridge->parent, "Invalid address space\n");
 996                 retval = -EINVAL;
 997                 goto err_aspace;
 998                 break;
 999         }
1000 
1001         temp_ctl &= ~(3<<4);
1002         if (cycle & VME_SUPER)
1003                 temp_ctl |= TSI148_LCSR_OTAT_SUP;
1004         if (cycle & VME_PROG)
1005                 temp_ctl |= TSI148_LCSR_OTAT_PGM;
1006 
1007         /* Setup mapping */
1008         iowrite32be(pci_base_high, bridge->base + TSI148_LCSR_OT[i] +
1009                 TSI148_LCSR_OFFSET_OTSAU);
1010         iowrite32be(pci_base_low, bridge->base + TSI148_LCSR_OT[i] +
1011                 TSI148_LCSR_OFFSET_OTSAL);
1012         iowrite32be(pci_bound_high, bridge->base + TSI148_LCSR_OT[i] +
1013                 TSI148_LCSR_OFFSET_OTEAU);
1014         iowrite32be(pci_bound_low, bridge->base + TSI148_LCSR_OT[i] +
1015                 TSI148_LCSR_OFFSET_OTEAL);
1016         iowrite32be(vme_offset_high, bridge->base + TSI148_LCSR_OT[i] +
1017                 TSI148_LCSR_OFFSET_OTOFU);
1018         iowrite32be(vme_offset_low, bridge->base + TSI148_LCSR_OT[i] +
1019                 TSI148_LCSR_OFFSET_OTOFL);
1020 
1021         /* Write ctl reg without enable */
1022         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_OT[i] +
1023                 TSI148_LCSR_OFFSET_OTAT);
1024 
1025         if (enabled)
1026                 temp_ctl |= TSI148_LCSR_OTAT_EN;
1027 
1028         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_OT[i] +
1029                 TSI148_LCSR_OFFSET_OTAT);
1030 
1031         spin_unlock(&image->lock);
1032         return 0;
1033 
1034 err_aspace:
1035 err_dwidth:
1036 err_gran:
1037         tsi148_free_resource(image);
1038 err_res:
1039 err_window:
1040         return retval;
1041 
1042 }
1043 
1044 /*
1045  * Set the attributes of an outbound window.
1046  *
1047  * XXX Not parsing prefetch information.
1048  */
1049 static int __tsi148_master_get(struct vme_master_resource *image, int *enabled,
1050         unsigned long long *vme_base, unsigned long long *size, u32 *aspace,
1051         u32 *cycle, u32 *dwidth)
1052 {
1053         unsigned int i, ctl;
1054         unsigned int pci_base_low, pci_base_high;
1055         unsigned int pci_bound_low, pci_bound_high;
1056         unsigned int vme_offset_low, vme_offset_high;
1057 
1058         unsigned long long pci_base, pci_bound, vme_offset;
1059         struct tsi148_driver *bridge;
1060 
1061         bridge = image->parent->driver_priv;
1062 
1063         i = image->number;
1064 
1065         ctl = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1066                 TSI148_LCSR_OFFSET_OTAT);
1067 
1068         pci_base_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1069                 TSI148_LCSR_OFFSET_OTSAU);
1070         pci_base_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1071                 TSI148_LCSR_OFFSET_OTSAL);
1072         pci_bound_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1073                 TSI148_LCSR_OFFSET_OTEAU);
1074         pci_bound_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1075                 TSI148_LCSR_OFFSET_OTEAL);
1076         vme_offset_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1077                 TSI148_LCSR_OFFSET_OTOFU);
1078         vme_offset_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1079                 TSI148_LCSR_OFFSET_OTOFL);
1080 
1081         /* Convert 64-bit variables to 2x 32-bit variables */
1082         reg_join(pci_base_high, pci_base_low, &pci_base);
1083         reg_join(pci_bound_high, pci_bound_low, &pci_bound);
1084         reg_join(vme_offset_high, vme_offset_low, &vme_offset);
1085 
1086         *vme_base = pci_base + vme_offset;
1087         *size = (unsigned long long)(pci_bound - pci_base) + 0x10000;
1088 
1089         *enabled = 0;
1090         *aspace = 0;
1091         *cycle = 0;
1092         *dwidth = 0;
1093 
1094         if (ctl & TSI148_LCSR_OTAT_EN)
1095                 *enabled = 1;
1096 
1097         /* Setup address space */
1098         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A16)
1099                 *aspace |= VME_A16;
1100         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A24)
1101                 *aspace |= VME_A24;
1102         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A32)
1103                 *aspace |= VME_A32;
1104         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A64)
1105                 *aspace |= VME_A64;
1106         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_CRCSR)
1107                 *aspace |= VME_CRCSR;
1108         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER1)
1109                 *aspace |= VME_USER1;
1110         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER2)
1111                 *aspace |= VME_USER2;
1112         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER3)
1113                 *aspace |= VME_USER3;
1114         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER4)
1115                 *aspace |= VME_USER4;
1116 
1117         /* Setup 2eSST speeds */
1118         if ((ctl & TSI148_LCSR_OTAT_2eSSTM_M) == TSI148_LCSR_OTAT_2eSSTM_160)
1119                 *cycle |= VME_2eSST160;
1120         if ((ctl & TSI148_LCSR_OTAT_2eSSTM_M) == TSI148_LCSR_OTAT_2eSSTM_267)
1121                 *cycle |= VME_2eSST267;
1122         if ((ctl & TSI148_LCSR_OTAT_2eSSTM_M) == TSI148_LCSR_OTAT_2eSSTM_320)
1123                 *cycle |= VME_2eSST320;
1124 
1125         /* Setup cycle types */
1126         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_SCT)
1127                 *cycle |= VME_SCT;
1128         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_BLT)
1129                 *cycle |= VME_BLT;
1130         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_MBLT)
1131                 *cycle |= VME_MBLT;
1132         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_2eVME)
1133                 *cycle |= VME_2eVME;
1134         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_2eSST)
1135                 *cycle |= VME_2eSST;
1136         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_2eSSTB)
1137                 *cycle |= VME_2eSSTB;
1138 
1139         if (ctl & TSI148_LCSR_OTAT_SUP)
1140                 *cycle |= VME_SUPER;
1141         else
1142                 *cycle |= VME_USER;
1143 
1144         if (ctl & TSI148_LCSR_OTAT_PGM)
1145                 *cycle |= VME_PROG;
1146         else
1147                 *cycle |= VME_DATA;
1148 
1149         /* Setup data width */
1150         if ((ctl & TSI148_LCSR_OTAT_DBW_M) == TSI148_LCSR_OTAT_DBW_16)
1151                 *dwidth = VME_D16;
1152         if ((ctl & TSI148_LCSR_OTAT_DBW_M) == TSI148_LCSR_OTAT_DBW_32)
1153                 *dwidth = VME_D32;
1154 
1155         return 0;
1156 }
1157 
1158 
1159 static int tsi148_master_get(struct vme_master_resource *image, int *enabled,
1160         unsigned long long *vme_base, unsigned long long *size, u32 *aspace,
1161         u32 *cycle, u32 *dwidth)
1162 {
1163         int retval;
1164 
1165         spin_lock(&image->lock);
1166 
1167         retval = __tsi148_master_get(image, enabled, vme_base, size, aspace,
1168                 cycle, dwidth);
1169 
1170         spin_unlock(&image->lock);
1171 
1172         return retval;
1173 }
1174 
1175 static ssize_t tsi148_master_read(struct vme_master_resource *image, void *buf,
1176         size_t count, loff_t offset)
1177 {
1178         int retval, enabled;
1179         unsigned long long vme_base, size;
1180         u32 aspace, cycle, dwidth;
1181         struct vme_error_handler *handler = NULL;
1182         struct vme_bridge *tsi148_bridge;
1183         void __iomem *addr = image->kern_base + offset;
1184         unsigned int done = 0;
1185         unsigned int count32;
1186 
1187         tsi148_bridge = image->parent;
1188 
1189         spin_lock(&image->lock);
1190 
1191         if (err_chk) {
1192                 __tsi148_master_get(image, &enabled, &vme_base, &size, &aspace,
1193                                     &cycle, &dwidth);
1194                 handler = vme_register_error_handler(tsi148_bridge, aspace,
1195                                                      vme_base + offset, count);
1196                 if (!handler) {
1197                         spin_unlock(&image->lock);
1198                         return -ENOMEM;
1199                 }
1200         }
1201 
1202         /* The following code handles VME address alignment. We cannot use
1203          * memcpy_xxx here because it may cut data transfers in to 8-bit
1204          * cycles when D16 or D32 cycles are required on the VME bus.
1205          * On the other hand, the bridge itself assures that the maximum data
1206          * cycle configured for the transfer is used and splits it
1207          * automatically for non-aligned addresses, so we don't want the
1208          * overhead of needlessly forcing small transfers for the entire cycle.
1209          */
1210         if ((uintptr_t)addr & 0x1) {
1211                 *(u8 *)buf = ioread8(addr);
1212                 done += 1;
1213                 if (done == count)
1214                         goto out;
1215         }
1216         if ((uintptr_t)(addr + done) & 0x2) {
1217                 if ((count - done) < 2) {
1218                         *(u8 *)(buf + done) = ioread8(addr + done);
1219                         done += 1;
1220                         goto out;
1221                 } else {
1222                         *(u16 *)(buf + done) = ioread16(addr + done);
1223                         done += 2;
1224                 }
1225         }
1226 
1227         count32 = (count - done) & ~0x3;
1228         while (done < count32) {
1229                 *(u32 *)(buf + done) = ioread32(addr + done);
1230                 done += 4;
1231         }
1232 
1233         if ((count - done) & 0x2) {
1234                 *(u16 *)(buf + done) = ioread16(addr + done);
1235                 done += 2;
1236         }
1237         if ((count - done) & 0x1) {
1238                 *(u8 *)(buf + done) = ioread8(addr + done);
1239                 done += 1;
1240         }
1241 
1242 out:
1243         retval = count;
1244 
1245         if (err_chk) {
1246                 if (handler->num_errors) {
1247                         dev_err(image->parent->parent,
1248                                 "First VME read error detected an at address 0x%llx\n",
1249                                 handler->first_error);
1250                         retval = handler->first_error - (vme_base + offset);
1251                 }
1252                 vme_unregister_error_handler(handler);
1253         }
1254 
1255         spin_unlock(&image->lock);
1256 
1257         return retval;
1258 }
1259 
1260 
1261 static ssize_t tsi148_master_write(struct vme_master_resource *image, void *buf,
1262         size_t count, loff_t offset)
1263 {
1264         int retval = 0, enabled;
1265         unsigned long long vme_base, size;
1266         u32 aspace, cycle, dwidth;
1267         void __iomem *addr = image->kern_base + offset;
1268         unsigned int done = 0;
1269         unsigned int count32;
1270 
1271         struct vme_error_handler *handler = NULL;
1272         struct vme_bridge *tsi148_bridge;
1273         struct tsi148_driver *bridge;
1274 
1275         tsi148_bridge = image->parent;
1276 
1277         bridge = tsi148_bridge->driver_priv;
1278 
1279         spin_lock(&image->lock);
1280 
1281         if (err_chk) {
1282                 __tsi148_master_get(image, &enabled, &vme_base, &size, &aspace,
1283                                     &cycle, &dwidth);
1284                 handler = vme_register_error_handler(tsi148_bridge, aspace,
1285                                                      vme_base + offset, count);
1286                 if (!handler) {
1287                         spin_unlock(&image->lock);
1288                         return -ENOMEM;
1289                 }
1290         }
1291 
1292         /* Here we apply for the same strategy we do in master_read
1293          * function in order to assure the correct cycles.
1294          */
1295         if ((uintptr_t)addr & 0x1) {
1296                 iowrite8(*(u8 *)buf, addr);
1297                 done += 1;
1298                 if (done == count)
1299                         goto out;
1300         }
1301         if ((uintptr_t)(addr + done) & 0x2) {
1302                 if ((count - done) < 2) {
1303                         iowrite8(*(u8 *)(buf + done), addr + done);
1304                         done += 1;
1305                         goto out;
1306                 } else {
1307                         iowrite16(*(u16 *)(buf + done), addr + done);
1308                         done += 2;
1309                 }
1310         }
1311 
1312         count32 = (count - done) & ~0x3;
1313         while (done < count32) {
1314                 iowrite32(*(u32 *)(buf + done), addr + done);
1315                 done += 4;
1316         }
1317 
1318         if ((count - done) & 0x2) {
1319                 iowrite16(*(u16 *)(buf + done), addr + done);
1320                 done += 2;
1321         }
1322         if ((count - done) & 0x1) {
1323                 iowrite8(*(u8 *)(buf + done), addr + done);
1324                 done += 1;
1325         }
1326 
1327 out:
1328         retval = count;
1329 
1330         /*
1331          * Writes are posted. We need to do a read on the VME bus to flush out
1332          * all of the writes before we check for errors. We can't guarantee
1333          * that reading the data we have just written is safe. It is believed
1334          * that there isn't any read, write re-ordering, so we can read any
1335          * location in VME space, so lets read the Device ID from the tsi148's
1336          * own registers as mapped into CR/CSR space.
1337          *
1338          * We check for saved errors in the written address range/space.
1339          */
1340 
1341         if (err_chk) {
1342                 ioread16(bridge->flush_image->kern_base + 0x7F000);
1343 
1344                 if (handler->num_errors) {
1345                         dev_warn(tsi148_bridge->parent,
1346                                  "First VME write error detected an at address 0x%llx\n",
1347                                  handler->first_error);
1348                         retval = handler->first_error - (vme_base + offset);
1349                 }
1350                 vme_unregister_error_handler(handler);
1351         }
1352 
1353         spin_unlock(&image->lock);
1354 
1355         return retval;
1356 }
1357 
1358 /*
1359  * Perform an RMW cycle on the VME bus.
1360  *
1361  * Requires a previously configured master window, returns final value.
1362  */
1363 static unsigned int tsi148_master_rmw(struct vme_master_resource *image,
1364         unsigned int mask, unsigned int compare, unsigned int swap,
1365         loff_t offset)
1366 {
1367         unsigned long long pci_addr;
1368         unsigned int pci_addr_high, pci_addr_low;
1369         u32 tmp, result;
1370         int i;
1371         struct tsi148_driver *bridge;
1372 
1373         bridge = image->parent->driver_priv;
1374 
1375         /* Find the PCI address that maps to the desired VME address */
1376         i = image->number;
1377 
1378         /* Locking as we can only do one of these at a time */
1379         mutex_lock(&bridge->vme_rmw);
1380 
1381         /* Lock image */
1382         spin_lock(&image->lock);
1383 
1384         pci_addr_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1385                 TSI148_LCSR_OFFSET_OTSAU);
1386         pci_addr_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1387                 TSI148_LCSR_OFFSET_OTSAL);
1388 
1389         reg_join(pci_addr_high, pci_addr_low, &pci_addr);
1390         reg_split(pci_addr + offset, &pci_addr_high, &pci_addr_low);
1391 
1392         /* Configure registers */
1393         iowrite32be(mask, bridge->base + TSI148_LCSR_RMWEN);
1394         iowrite32be(compare, bridge->base + TSI148_LCSR_RMWC);
1395         iowrite32be(swap, bridge->base + TSI148_LCSR_RMWS);
1396         iowrite32be(pci_addr_high, bridge->base + TSI148_LCSR_RMWAU);
1397         iowrite32be(pci_addr_low, bridge->base + TSI148_LCSR_RMWAL);
1398 
1399         /* Enable RMW */
1400         tmp = ioread32be(bridge->base + TSI148_LCSR_VMCTRL);
1401         tmp |= TSI148_LCSR_VMCTRL_RMWEN;
1402         iowrite32be(tmp, bridge->base + TSI148_LCSR_VMCTRL);
1403 
1404         /* Kick process off with a read to the required address. */
1405         result = ioread32be(image->kern_base + offset);
1406 
1407         /* Disable RMW */
1408         tmp = ioread32be(bridge->base + TSI148_LCSR_VMCTRL);
1409         tmp &= ~TSI148_LCSR_VMCTRL_RMWEN;
1410         iowrite32be(tmp, bridge->base + TSI148_LCSR_VMCTRL);
1411 
1412         spin_unlock(&image->lock);
1413 
1414         mutex_unlock(&bridge->vme_rmw);
1415 
1416         return result;
1417 }
1418 
1419 static int tsi148_dma_set_vme_src_attributes(struct device *dev, __be32 *attr,
1420         u32 aspace, u32 cycle, u32 dwidth)
1421 {
1422         u32 val;
1423 
1424         val = be32_to_cpu(*attr);
1425 
1426         /* Setup 2eSST speeds */
1427         switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
1428         case VME_2eSST160:
1429                 val |= TSI148_LCSR_DSAT_2eSSTM_160;
1430                 break;
1431         case VME_2eSST267:
1432                 val |= TSI148_LCSR_DSAT_2eSSTM_267;
1433                 break;
1434         case VME_2eSST320:
1435                 val |= TSI148_LCSR_DSAT_2eSSTM_320;
1436                 break;
1437         }
1438 
1439         /* Setup cycle types */
1440         if (cycle & VME_SCT)
1441                 val |= TSI148_LCSR_DSAT_TM_SCT;
1442 
1443         if (cycle & VME_BLT)
1444                 val |= TSI148_LCSR_DSAT_TM_BLT;
1445 
1446         if (cycle & VME_MBLT)
1447                 val |= TSI148_LCSR_DSAT_TM_MBLT;
1448 
1449         if (cycle & VME_2eVME)
1450                 val |= TSI148_LCSR_DSAT_TM_2eVME;
1451 
1452         if (cycle & VME_2eSST)
1453                 val |= TSI148_LCSR_DSAT_TM_2eSST;
1454 
1455         if (cycle & VME_2eSSTB) {
1456                 dev_err(dev, "Currently not setting Broadcast Select "
1457                         "Registers\n");
1458                 val |= TSI148_LCSR_DSAT_TM_2eSSTB;
1459         }
1460 
1461         /* Setup data width */
1462         switch (dwidth) {
1463         case VME_D16:
1464                 val |= TSI148_LCSR_DSAT_DBW_16;
1465                 break;
1466         case VME_D32:
1467                 val |= TSI148_LCSR_DSAT_DBW_32;
1468                 break;
1469         default:
1470                 dev_err(dev, "Invalid data width\n");
1471                 return -EINVAL;
1472         }
1473 
1474         /* Setup address space */
1475         switch (aspace) {
1476         case VME_A16:
1477                 val |= TSI148_LCSR_DSAT_AMODE_A16;
1478                 break;
1479         case VME_A24:
1480                 val |= TSI148_LCSR_DSAT_AMODE_A24;
1481                 break;
1482         case VME_A32:
1483                 val |= TSI148_LCSR_DSAT_AMODE_A32;
1484                 break;
1485         case VME_A64:
1486                 val |= TSI148_LCSR_DSAT_AMODE_A64;
1487                 break;
1488         case VME_CRCSR:
1489                 val |= TSI148_LCSR_DSAT_AMODE_CRCSR;
1490                 break;
1491         case VME_USER1:
1492                 val |= TSI148_LCSR_DSAT_AMODE_USER1;
1493                 break;
1494         case VME_USER2:
1495                 val |= TSI148_LCSR_DSAT_AMODE_USER2;
1496                 break;
1497         case VME_USER3:
1498                 val |= TSI148_LCSR_DSAT_AMODE_USER3;
1499                 break;
1500         case VME_USER4:
1501                 val |= TSI148_LCSR_DSAT_AMODE_USER4;
1502                 break;
1503         default:
1504                 dev_err(dev, "Invalid address space\n");
1505                 return -EINVAL;
1506                 break;
1507         }
1508 
1509         if (cycle & VME_SUPER)
1510                 val |= TSI148_LCSR_DSAT_SUP;
1511         if (cycle & VME_PROG)
1512                 val |= TSI148_LCSR_DSAT_PGM;
1513 
1514         *attr = cpu_to_be32(val);
1515 
1516         return 0;
1517 }
1518 
1519 static int tsi148_dma_set_vme_dest_attributes(struct device *dev, __be32 *attr,
1520         u32 aspace, u32 cycle, u32 dwidth)
1521 {
1522         u32 val;
1523 
1524         val = be32_to_cpu(*attr);
1525 
1526         /* Setup 2eSST speeds */
1527         switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
1528         case VME_2eSST160:
1529                 val |= TSI148_LCSR_DDAT_2eSSTM_160;
1530                 break;
1531         case VME_2eSST267:
1532                 val |= TSI148_LCSR_DDAT_2eSSTM_267;
1533                 break;
1534         case VME_2eSST320:
1535                 val |= TSI148_LCSR_DDAT_2eSSTM_320;
1536                 break;
1537         }
1538 
1539         /* Setup cycle types */
1540         if (cycle & VME_SCT)
1541                 val |= TSI148_LCSR_DDAT_TM_SCT;
1542 
1543         if (cycle & VME_BLT)
1544                 val |= TSI148_LCSR_DDAT_TM_BLT;
1545 
1546         if (cycle & VME_MBLT)
1547                 val |= TSI148_LCSR_DDAT_TM_MBLT;
1548 
1549         if (cycle & VME_2eVME)
1550                 val |= TSI148_LCSR_DDAT_TM_2eVME;
1551 
1552         if (cycle & VME_2eSST)
1553                 val |= TSI148_LCSR_DDAT_TM_2eSST;
1554 
1555         if (cycle & VME_2eSSTB) {
1556                 dev_err(dev, "Currently not setting Broadcast Select "
1557                         "Registers\n");
1558                 val |= TSI148_LCSR_DDAT_TM_2eSSTB;
1559         }
1560 
1561         /* Setup data width */
1562         switch (dwidth) {
1563         case VME_D16:
1564                 val |= TSI148_LCSR_DDAT_DBW_16;
1565                 break;
1566         case VME_D32:
1567                 val |= TSI148_LCSR_DDAT_DBW_32;
1568                 break;
1569         default:
1570                 dev_err(dev, "Invalid data width\n");
1571                 return -EINVAL;
1572         }
1573 
1574         /* Setup address space */
1575         switch (aspace) {
1576         case VME_A16:
1577                 val |= TSI148_LCSR_DDAT_AMODE_A16;
1578                 break;
1579         case VME_A24:
1580                 val |= TSI148_LCSR_DDAT_AMODE_A24;
1581                 break;
1582         case VME_A32:
1583                 val |= TSI148_LCSR_DDAT_AMODE_A32;
1584                 break;
1585         case VME_A64:
1586                 val |= TSI148_LCSR_DDAT_AMODE_A64;
1587                 break;
1588         case VME_CRCSR:
1589                 val |= TSI148_LCSR_DDAT_AMODE_CRCSR;
1590                 break;
1591         case VME_USER1:
1592                 val |= TSI148_LCSR_DDAT_AMODE_USER1;
1593                 break;
1594         case VME_USER2:
1595                 val |= TSI148_LCSR_DDAT_AMODE_USER2;
1596                 break;
1597         case VME_USER3:
1598                 val |= TSI148_LCSR_DDAT_AMODE_USER3;
1599                 break;
1600         case VME_USER4:
1601                 val |= TSI148_LCSR_DDAT_AMODE_USER4;
1602                 break;
1603         default:
1604                 dev_err(dev, "Invalid address space\n");
1605                 return -EINVAL;
1606                 break;
1607         }
1608 
1609         if (cycle & VME_SUPER)
1610                 val |= TSI148_LCSR_DDAT_SUP;
1611         if (cycle & VME_PROG)
1612                 val |= TSI148_LCSR_DDAT_PGM;
1613 
1614         *attr = cpu_to_be32(val);
1615 
1616         return 0;
1617 }
1618 
1619 /*
1620  * Add a link list descriptor to the list
1621  *
1622  * Note: DMA engine expects the DMA descriptor to be big endian.
1623  */
1624 static int tsi148_dma_list_add(struct vme_dma_list *list,
1625         struct vme_dma_attr *src, struct vme_dma_attr *dest, size_t count)
1626 {
1627         struct tsi148_dma_entry *entry, *prev;
1628         u32 address_high, address_low, val;
1629         struct vme_dma_pattern *pattern_attr;
1630         struct vme_dma_pci *pci_attr;
1631         struct vme_dma_vme *vme_attr;
1632         int retval = 0;
1633         struct vme_bridge *tsi148_bridge;
1634 
1635         tsi148_bridge = list->parent->parent;
1636 
1637         /* Descriptor must be aligned on 64-bit boundaries */
1638         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1639         if (!entry) {
1640                 retval = -ENOMEM;
1641                 goto err_mem;
1642         }
1643 
1644         /* Test descriptor alignment */
1645         if ((unsigned long)&entry->descriptor & 0x7) {
1646                 dev_err(tsi148_bridge->parent, "Descriptor not aligned to 8 "
1647                         "byte boundary as required: %p\n",
1648                         &entry->descriptor);
1649                 retval = -EINVAL;
1650                 goto err_align;
1651         }
1652 
1653         /* Given we are going to fill out the structure, we probably don't
1654          * need to zero it, but better safe than sorry for now.
1655          */
1656         memset(&entry->descriptor, 0, sizeof(entry->descriptor));
1657 
1658         /* Fill out source part */
1659         switch (src->type) {
1660         case VME_DMA_PATTERN:
1661                 pattern_attr = src->private;
1662 
1663                 entry->descriptor.dsal = cpu_to_be32(pattern_attr->pattern);
1664 
1665                 val = TSI148_LCSR_DSAT_TYP_PAT;
1666 
1667                 /* Default behaviour is 32 bit pattern */
1668                 if (pattern_attr->type & VME_DMA_PATTERN_BYTE)
1669                         val |= TSI148_LCSR_DSAT_PSZ;
1670 
1671                 /* It seems that the default behaviour is to increment */
1672                 if ((pattern_attr->type & VME_DMA_PATTERN_INCREMENT) == 0)
1673                         val |= TSI148_LCSR_DSAT_NIN;
1674                 entry->descriptor.dsat = cpu_to_be32(val);
1675                 break;
1676         case VME_DMA_PCI:
1677                 pci_attr = src->private;
1678 
1679                 reg_split((unsigned long long)pci_attr->address, &address_high,
1680                         &address_low);
1681                 entry->descriptor.dsau = cpu_to_be32(address_high);
1682                 entry->descriptor.dsal = cpu_to_be32(address_low);
1683                 entry->descriptor.dsat = cpu_to_be32(TSI148_LCSR_DSAT_TYP_PCI);
1684                 break;
1685         case VME_DMA_VME:
1686                 vme_attr = src->private;
1687 
1688                 reg_split((unsigned long long)vme_attr->address, &address_high,
1689                         &address_low);
1690                 entry->descriptor.dsau = cpu_to_be32(address_high);
1691                 entry->descriptor.dsal = cpu_to_be32(address_low);
1692                 entry->descriptor.dsat = cpu_to_be32(TSI148_LCSR_DSAT_TYP_VME);
1693 
1694                 retval = tsi148_dma_set_vme_src_attributes(
1695                         tsi148_bridge->parent, &entry->descriptor.dsat,
1696                         vme_attr->aspace, vme_attr->cycle, vme_attr->dwidth);
1697                 if (retval < 0)
1698                         goto err_source;
1699                 break;
1700         default:
1701                 dev_err(tsi148_bridge->parent, "Invalid source type\n");
1702                 retval = -EINVAL;
1703                 goto err_source;
1704                 break;
1705         }
1706 
1707         /* Assume last link - this will be over-written by adding another */
1708         entry->descriptor.dnlau = cpu_to_be32(0);
1709         entry->descriptor.dnlal = cpu_to_be32(TSI148_LCSR_DNLAL_LLA);
1710 
1711         /* Fill out destination part */
1712         switch (dest->type) {
1713         case VME_DMA_PCI:
1714                 pci_attr = dest->private;
1715 
1716                 reg_split((unsigned long long)pci_attr->address, &address_high,
1717                         &address_low);
1718                 entry->descriptor.ddau = cpu_to_be32(address_high);
1719                 entry->descriptor.ddal = cpu_to_be32(address_low);
1720                 entry->descriptor.ddat = cpu_to_be32(TSI148_LCSR_DDAT_TYP_PCI);
1721                 break;
1722         case VME_DMA_VME:
1723                 vme_attr = dest->private;
1724 
1725                 reg_split((unsigned long long)vme_attr->address, &address_high,
1726                         &address_low);
1727                 entry->descriptor.ddau = cpu_to_be32(address_high);
1728                 entry->descriptor.ddal = cpu_to_be32(address_low);
1729                 entry->descriptor.ddat = cpu_to_be32(TSI148_LCSR_DDAT_TYP_VME);
1730 
1731                 retval = tsi148_dma_set_vme_dest_attributes(
1732                         tsi148_bridge->parent, &entry->descriptor.ddat,
1733                         vme_attr->aspace, vme_attr->cycle, vme_attr->dwidth);
1734                 if (retval < 0)
1735                         goto err_dest;
1736                 break;
1737         default:
1738                 dev_err(tsi148_bridge->parent, "Invalid destination type\n");
1739                 retval = -EINVAL;
1740                 goto err_dest;
1741                 break;
1742         }
1743 
1744         /* Fill out count */
1745         entry->descriptor.dcnt = cpu_to_be32((u32)count);
1746 
1747         /* Add to list */
1748         list_add_tail(&entry->list, &list->entries);
1749 
1750         entry->dma_handle = dma_map_single(tsi148_bridge->parent,
1751                                            &entry->descriptor,
1752                                            sizeof(entry->descriptor),
1753                                            DMA_TO_DEVICE);
1754         if (dma_mapping_error(tsi148_bridge->parent, entry->dma_handle)) {
1755                 dev_err(tsi148_bridge->parent, "DMA mapping error\n");
1756                 retval = -EINVAL;
1757                 goto err_dma;
1758         }
1759 
1760         /* Fill out previous descriptors "Next Address" */
1761         if (entry->list.prev != &list->entries) {
1762                 reg_split((unsigned long long)entry->dma_handle, &address_high,
1763                         &address_low);
1764                 prev = list_entry(entry->list.prev, struct tsi148_dma_entry,
1765                                   list);
1766                 prev->descriptor.dnlau = cpu_to_be32(address_high);
1767                 prev->descriptor.dnlal = cpu_to_be32(address_low);
1768 
1769         }
1770 
1771         return 0;
1772 
1773 err_dma:
1774 err_dest:
1775 err_source:
1776 err_align:
1777                 kfree(entry);
1778 err_mem:
1779         return retval;
1780 }
1781 
1782 /*
1783  * Check to see if the provided DMA channel is busy.
1784  */
1785 static int tsi148_dma_busy(struct vme_bridge *tsi148_bridge, int channel)
1786 {
1787         u32 tmp;
1788         struct tsi148_driver *bridge;
1789 
1790         bridge = tsi148_bridge->driver_priv;
1791 
1792         tmp = ioread32be(bridge->base + TSI148_LCSR_DMA[channel] +
1793                 TSI148_LCSR_OFFSET_DSTA);
1794 
1795         if (tmp & TSI148_LCSR_DSTA_BSY)
1796                 return 0;
1797         else
1798                 return 1;
1799 
1800 }
1801 
1802 /*
1803  * Execute a previously generated link list
1804  *
1805  * XXX Need to provide control register configuration.
1806  */
1807 static int tsi148_dma_list_exec(struct vme_dma_list *list)
1808 {
1809         struct vme_dma_resource *ctrlr;
1810         int channel, retval;
1811         struct tsi148_dma_entry *entry;
1812         u32 bus_addr_high, bus_addr_low;
1813         u32 val, dctlreg = 0;
1814         struct vme_bridge *tsi148_bridge;
1815         struct tsi148_driver *bridge;
1816 
1817         ctrlr = list->parent;
1818 
1819         tsi148_bridge = ctrlr->parent;
1820 
1821         bridge = tsi148_bridge->driver_priv;
1822 
1823         mutex_lock(&ctrlr->mtx);
1824 
1825         channel = ctrlr->number;
1826 
1827         if (!list_empty(&ctrlr->running)) {
1828                 /*
1829                  * XXX We have an active DMA transfer and currently haven't
1830                  *     sorted out the mechanism for "pending" DMA transfers.
1831                  *     Return busy.
1832                  */
1833                 /* Need to add to pending here */
1834                 mutex_unlock(&ctrlr->mtx);
1835                 return -EBUSY;
1836         } else {
1837                 list_add(&list->list, &ctrlr->running);
1838         }
1839 
1840         /* Get first bus address and write into registers */
1841         entry = list_first_entry(&list->entries, struct tsi148_dma_entry,
1842                 list);
1843 
1844         mutex_unlock(&ctrlr->mtx);
1845 
1846         reg_split(entry->dma_handle, &bus_addr_high, &bus_addr_low);
1847 
1848         iowrite32be(bus_addr_high, bridge->base +
1849                 TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DNLAU);
1850         iowrite32be(bus_addr_low, bridge->base +
1851                 TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DNLAL);
1852 
1853         dctlreg = ioread32be(bridge->base + TSI148_LCSR_DMA[channel] +
1854                 TSI148_LCSR_OFFSET_DCTL);
1855 
1856         /* Start the operation */
1857         iowrite32be(dctlreg | TSI148_LCSR_DCTL_DGO, bridge->base +
1858                 TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DCTL);
1859 
1860         retval = wait_event_interruptible(bridge->dma_queue[channel],
1861                 tsi148_dma_busy(ctrlr->parent, channel));
1862 
1863         if (retval) {
1864                 iowrite32be(dctlreg | TSI148_LCSR_DCTL_ABT, bridge->base +
1865                         TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DCTL);
1866                 /* Wait for the operation to abort */
1867                 wait_event(bridge->dma_queue[channel],
1868                            tsi148_dma_busy(ctrlr->parent, channel));
1869                 retval = -EINTR;
1870                 goto exit;
1871         }
1872 
1873         /*
1874          * Read status register, this register is valid until we kick off a
1875          * new transfer.
1876          */
1877         val = ioread32be(bridge->base + TSI148_LCSR_DMA[channel] +
1878                 TSI148_LCSR_OFFSET_DSTA);
1879 
1880         if (val & TSI148_LCSR_DSTA_VBE) {
1881                 dev_err(tsi148_bridge->parent, "DMA Error. DSTA=%08X\n", val);
1882                 retval = -EIO;
1883         }
1884 
1885 exit:
1886         /* Remove list from running list */
1887         mutex_lock(&ctrlr->mtx);
1888         list_del(&list->list);
1889         mutex_unlock(&ctrlr->mtx);
1890 
1891         return retval;
1892 }
1893 
1894 /*
1895  * Clean up a previously generated link list
1896  *
1897  * We have a separate function, don't assume that the chain can't be reused.
1898  */
1899 static int tsi148_dma_list_empty(struct vme_dma_list *list)
1900 {
1901         struct list_head *pos, *temp;
1902         struct tsi148_dma_entry *entry;
1903 
1904         struct vme_bridge *tsi148_bridge = list->parent->parent;
1905 
1906         /* detach and free each entry */
1907         list_for_each_safe(pos, temp, &list->entries) {
1908                 list_del(pos);
1909                 entry = list_entry(pos, struct tsi148_dma_entry, list);
1910 
1911                 dma_unmap_single(tsi148_bridge->parent, entry->dma_handle,
1912                         sizeof(struct tsi148_dma_descriptor), DMA_TO_DEVICE);
1913                 kfree(entry);
1914         }
1915 
1916         return 0;
1917 }
1918 
1919 /*
1920  * All 4 location monitors reside at the same base - this is therefore a
1921  * system wide configuration.
1922  *
1923  * This does not enable the LM monitor - that should be done when the first
1924  * callback is attached and disabled when the last callback is removed.
1925  */
1926 static int tsi148_lm_set(struct vme_lm_resource *lm, unsigned long long lm_base,
1927         u32 aspace, u32 cycle)
1928 {
1929         u32 lm_base_high, lm_base_low, lm_ctl = 0;
1930         int i;
1931         struct vme_bridge *tsi148_bridge;
1932         struct tsi148_driver *bridge;
1933 
1934         tsi148_bridge = lm->parent;
1935 
1936         bridge = tsi148_bridge->driver_priv;
1937 
1938         mutex_lock(&lm->mtx);
1939 
1940         /* If we already have a callback attached, we can't move it! */
1941         for (i = 0; i < lm->monitors; i++) {
1942                 if (bridge->lm_callback[i]) {
1943                         mutex_unlock(&lm->mtx);
1944                         dev_err(tsi148_bridge->parent, "Location monitor "
1945                                 "callback attached, can't reset\n");
1946                         return -EBUSY;
1947                 }
1948         }
1949 
1950         switch (aspace) {
1951         case VME_A16:
1952                 lm_ctl |= TSI148_LCSR_LMAT_AS_A16;
1953                 break;
1954         case VME_A24:
1955                 lm_ctl |= TSI148_LCSR_LMAT_AS_A24;
1956                 break;
1957         case VME_A32:
1958                 lm_ctl |= TSI148_LCSR_LMAT_AS_A32;
1959                 break;
1960         case VME_A64:
1961                 lm_ctl |= TSI148_LCSR_LMAT_AS_A64;
1962                 break;
1963         default:
1964                 mutex_unlock(&lm->mtx);
1965                 dev_err(tsi148_bridge->parent, "Invalid address space\n");
1966                 return -EINVAL;
1967                 break;
1968         }
1969 
1970         if (cycle & VME_SUPER)
1971                 lm_ctl |= TSI148_LCSR_LMAT_SUPR ;
1972         if (cycle & VME_USER)
1973                 lm_ctl |= TSI148_LCSR_LMAT_NPRIV;
1974         if (cycle & VME_PROG)
1975                 lm_ctl |= TSI148_LCSR_LMAT_PGM;
1976         if (cycle & VME_DATA)
1977                 lm_ctl |= TSI148_LCSR_LMAT_DATA;
1978 
1979         reg_split(lm_base, &lm_base_high, &lm_base_low);
1980 
1981         iowrite32be(lm_base_high, bridge->base + TSI148_LCSR_LMBAU);
1982         iowrite32be(lm_base_low, bridge->base + TSI148_LCSR_LMBAL);
1983         iowrite32be(lm_ctl, bridge->base + TSI148_LCSR_LMAT);
1984 
1985         mutex_unlock(&lm->mtx);
1986 
1987         return 0;
1988 }
1989 
1990 /* Get configuration of the callback monitor and return whether it is enabled
1991  * or disabled.
1992  */
1993 static int tsi148_lm_get(struct vme_lm_resource *lm,
1994         unsigned long long *lm_base, u32 *aspace, u32 *cycle)
1995 {
1996         u32 lm_base_high, lm_base_low, lm_ctl, enabled = 0;
1997         struct tsi148_driver *bridge;
1998 
1999         bridge = lm->parent->driver_priv;
2000 
2001         mutex_lock(&lm->mtx);
2002 
2003         lm_base_high = ioread32be(bridge->base + TSI148_LCSR_LMBAU);
2004         lm_base_low = ioread32be(bridge->base + TSI148_LCSR_LMBAL);
2005         lm_ctl = ioread32be(bridge->base + TSI148_LCSR_LMAT);
2006 
2007         reg_join(lm_base_high, lm_base_low, lm_base);
2008 
2009         if (lm_ctl & TSI148_LCSR_LMAT_EN)
2010                 enabled = 1;
2011 
2012         if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A16)
2013                 *aspace |= VME_A16;
2014 
2015         if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A24)
2016                 *aspace |= VME_A24;
2017 
2018         if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A32)
2019                 *aspace |= VME_A32;
2020 
2021         if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A64)
2022                 *aspace |= VME_A64;
2023 
2024 
2025         if (lm_ctl & TSI148_LCSR_LMAT_SUPR)
2026                 *cycle |= VME_SUPER;
2027         if (lm_ctl & TSI148_LCSR_LMAT_NPRIV)
2028                 *cycle |= VME_USER;
2029         if (lm_ctl & TSI148_LCSR_LMAT_PGM)
2030                 *cycle |= VME_PROG;
2031         if (lm_ctl & TSI148_LCSR_LMAT_DATA)
2032                 *cycle |= VME_DATA;
2033 
2034         mutex_unlock(&lm->mtx);
2035 
2036         return enabled;
2037 }
2038 
2039 /*
2040  * Attach a callback to a specific location monitor.
2041  *
2042  * Callback will be passed the monitor triggered.
2043  */
2044 static int tsi148_lm_attach(struct vme_lm_resource *lm, int monitor,
2045         void (*callback)(void *), void *data)
2046 {
2047         u32 lm_ctl, tmp;
2048         struct vme_bridge *tsi148_bridge;
2049         struct tsi148_driver *bridge;
2050 
2051         tsi148_bridge = lm->parent;
2052 
2053         bridge = tsi148_bridge->driver_priv;
2054 
2055         mutex_lock(&lm->mtx);
2056 
2057         /* Ensure that the location monitor is configured - need PGM or DATA */
2058         lm_ctl = ioread32be(bridge->base + TSI148_LCSR_LMAT);
2059         if ((lm_ctl & (TSI148_LCSR_LMAT_PGM | TSI148_LCSR_LMAT_DATA)) == 0) {
2060                 mutex_unlock(&lm->mtx);
2061                 dev_err(tsi148_bridge->parent, "Location monitor not properly "
2062                         "configured\n");
2063                 return -EINVAL;
2064         }
2065 
2066         /* Check that a callback isn't already attached */
2067         if (bridge->lm_callback[monitor]) {
2068                 mutex_unlock(&lm->mtx);
2069                 dev_err(tsi148_bridge->parent, "Existing callback attached\n");
2070                 return -EBUSY;
2071         }
2072 
2073         /* Attach callback */
2074         bridge->lm_callback[monitor] = callback;
2075         bridge->lm_data[monitor] = data;
2076 
2077         /* Enable Location Monitor interrupt */
2078         tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
2079         tmp |= TSI148_LCSR_INTEN_LMEN[monitor];
2080         iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
2081 
2082         tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
2083         tmp |= TSI148_LCSR_INTEO_LMEO[monitor];
2084         iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
2085 
2086         /* Ensure that global Location Monitor Enable set */
2087         if ((lm_ctl & TSI148_LCSR_LMAT_EN) == 0) {
2088                 lm_ctl |= TSI148_LCSR_LMAT_EN;
2089                 iowrite32be(lm_ctl, bridge->base + TSI148_LCSR_LMAT);
2090         }
2091 
2092         mutex_unlock(&lm->mtx);
2093 
2094         return 0;
2095 }
2096 
2097 /*
2098  * Detach a callback function forn a specific location monitor.
2099  */
2100 static int tsi148_lm_detach(struct vme_lm_resource *lm, int monitor)
2101 {
2102         u32 lm_en, tmp;
2103         struct tsi148_driver *bridge;
2104 
2105         bridge = lm->parent->driver_priv;
2106 
2107         mutex_lock(&lm->mtx);
2108 
2109         /* Disable Location Monitor and ensure previous interrupts are clear */
2110         lm_en = ioread32be(bridge->base + TSI148_LCSR_INTEN);
2111         lm_en &= ~TSI148_LCSR_INTEN_LMEN[monitor];
2112         iowrite32be(lm_en, bridge->base + TSI148_LCSR_INTEN);
2113 
2114         tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
2115         tmp &= ~TSI148_LCSR_INTEO_LMEO[monitor];
2116         iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
2117 
2118         iowrite32be(TSI148_LCSR_INTC_LMC[monitor],
2119                  bridge->base + TSI148_LCSR_INTC);
2120 
2121         /* Detach callback */
2122         bridge->lm_callback[monitor] = NULL;
2123         bridge->lm_data[monitor] = NULL;
2124 
2125         /* If all location monitors disabled, disable global Location Monitor */
2126         if ((lm_en & (TSI148_LCSR_INTS_LM0S | TSI148_LCSR_INTS_LM1S |
2127                         TSI148_LCSR_INTS_LM2S | TSI148_LCSR_INTS_LM3S)) == 0) {
2128                 tmp = ioread32be(bridge->base + TSI148_LCSR_LMAT);
2129                 tmp &= ~TSI148_LCSR_LMAT_EN;
2130                 iowrite32be(tmp, bridge->base + TSI148_LCSR_LMAT);
2131         }
2132 
2133         mutex_unlock(&lm->mtx);
2134 
2135         return 0;
2136 }
2137 
2138 /*
2139  * Determine Geographical Addressing
2140  */
2141 static int tsi148_slot_get(struct vme_bridge *tsi148_bridge)
2142 {
2143         u32 slot = 0;
2144         struct tsi148_driver *bridge;
2145 
2146         bridge = tsi148_bridge->driver_priv;
2147 
2148         if (!geoid) {
2149                 slot = ioread32be(bridge->base + TSI148_LCSR_VSTAT);
2150                 slot = slot & TSI148_LCSR_VSTAT_GA_M;
2151         } else
2152                 slot = geoid;
2153 
2154         return (int)slot;
2155 }
2156 
2157 static void *tsi148_alloc_consistent(struct device *parent, size_t size,
2158         dma_addr_t *dma)
2159 {
2160         struct pci_dev *pdev;
2161 
2162         /* Find pci_dev container of dev */
2163         pdev = to_pci_dev(parent);
2164 
2165         return pci_alloc_consistent(pdev, size, dma);
2166 }
2167 
2168 static void tsi148_free_consistent(struct device *parent, size_t size,
2169         void *vaddr, dma_addr_t dma)
2170 {
2171         struct pci_dev *pdev;
2172 
2173         /* Find pci_dev container of dev */
2174         pdev = to_pci_dev(parent);
2175 
2176         pci_free_consistent(pdev, size, vaddr, dma);
2177 }
2178 
2179 /*
2180  * Configure CR/CSR space
2181  *
2182  * Access to the CR/CSR can be configured at power-up. The location of the
2183  * CR/CSR registers in the CR/CSR address space is determined by the boards
2184  * Auto-ID or Geographic address. This function ensures that the window is
2185  * enabled at an offset consistent with the boards geopgraphic address.
2186  *
2187  * Each board has a 512kB window, with the highest 4kB being used for the
2188  * boards registers, this means there is a fix length 508kB window which must
2189  * be mapped onto PCI memory.
2190  */
2191 static int tsi148_crcsr_init(struct vme_bridge *tsi148_bridge,
2192         struct pci_dev *pdev)
2193 {
2194         u32 cbar, crat, vstat;
2195         u32 crcsr_bus_high, crcsr_bus_low;
2196         int retval;
2197         struct tsi148_driver *bridge;
2198 
2199         bridge = tsi148_bridge->driver_priv;
2200 
2201         /* Allocate mem for CR/CSR image */
2202         bridge->crcsr_kernel = pci_zalloc_consistent(pdev, VME_CRCSR_BUF_SIZE,
2203                                                      &bridge->crcsr_bus);
2204         if (!bridge->crcsr_kernel) {
2205                 dev_err(tsi148_bridge->parent, "Failed to allocate memory for "
2206                         "CR/CSR image\n");
2207                 return -ENOMEM;
2208         }
2209 
2210         reg_split(bridge->crcsr_bus, &crcsr_bus_high, &crcsr_bus_low);
2211 
2212         iowrite32be(crcsr_bus_high, bridge->base + TSI148_LCSR_CROU);
2213         iowrite32be(crcsr_bus_low, bridge->base + TSI148_LCSR_CROL);
2214 
2215         /* Ensure that the CR/CSR is configured at the correct offset */
2216         cbar = ioread32be(bridge->base + TSI148_CBAR);
2217         cbar = (cbar & TSI148_CRCSR_CBAR_M)>>3;
2218 
2219         vstat = tsi148_slot_get(tsi148_bridge);
2220 
2221         if (cbar != vstat) {
2222                 cbar = vstat;
2223                 dev_info(tsi148_bridge->parent, "Setting CR/CSR offset\n");
2224                 iowrite32be(cbar<<3, bridge->base + TSI148_CBAR);
2225         }
2226         dev_info(tsi148_bridge->parent, "CR/CSR Offset: %d\n", cbar);
2227 
2228         crat = ioread32be(bridge->base + TSI148_LCSR_CRAT);
2229         if (crat & TSI148_LCSR_CRAT_EN)
2230                 dev_info(tsi148_bridge->parent, "CR/CSR already enabled\n");
2231         else {
2232                 dev_info(tsi148_bridge->parent, "Enabling CR/CSR space\n");
2233                 iowrite32be(crat | TSI148_LCSR_CRAT_EN,
2234                         bridge->base + TSI148_LCSR_CRAT);
2235         }
2236 
2237         /* If we want flushed, error-checked writes, set up a window
2238          * over the CR/CSR registers. We read from here to safely flush
2239          * through VME writes.
2240          */
2241         if (err_chk) {
2242                 retval = tsi148_master_set(bridge->flush_image, 1,
2243                         (vstat * 0x80000), 0x80000, VME_CRCSR, VME_SCT,
2244                         VME_D16);
2245                 if (retval)
2246                         dev_err(tsi148_bridge->parent, "Configuring flush image"
2247                                 " failed\n");
2248         }
2249 
2250         return 0;
2251 
2252 }
2253 
2254 static void tsi148_crcsr_exit(struct vme_bridge *tsi148_bridge,
2255         struct pci_dev *pdev)
2256 {
2257         u32 crat;
2258         struct tsi148_driver *bridge;
2259 
2260         bridge = tsi148_bridge->driver_priv;
2261 
2262         /* Turn off CR/CSR space */
2263         crat = ioread32be(bridge->base + TSI148_LCSR_CRAT);
2264         iowrite32be(crat & ~TSI148_LCSR_CRAT_EN,
2265                 bridge->base + TSI148_LCSR_CRAT);
2266 
2267         /* Free image */
2268         iowrite32be(0, bridge->base + TSI148_LCSR_CROU);
2269         iowrite32be(0, bridge->base + TSI148_LCSR_CROL);
2270 
2271         pci_free_consistent(pdev, VME_CRCSR_BUF_SIZE, bridge->crcsr_kernel,
2272                 bridge->crcsr_bus);
2273 }
2274 
2275 static int tsi148_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2276 {
2277         int retval, i, master_num;
2278         u32 data;
2279         struct list_head *pos = NULL, *n;
2280         struct vme_bridge *tsi148_bridge;
2281         struct tsi148_driver *tsi148_device;
2282         struct vme_master_resource *master_image;
2283         struct vme_slave_resource *slave_image;
2284         struct vme_dma_resource *dma_ctrlr;
2285         struct vme_lm_resource *lm;
2286 
2287         /* If we want to support more than one of each bridge, we need to
2288          * dynamically generate this so we get one per device
2289          */
2290         tsi148_bridge = kzalloc(sizeof(*tsi148_bridge), GFP_KERNEL);
2291         if (!tsi148_bridge) {
2292                 retval = -ENOMEM;
2293                 goto err_struct;
2294         }
2295         vme_init_bridge(tsi148_bridge);
2296 
2297         tsi148_device = kzalloc(sizeof(*tsi148_device), GFP_KERNEL);
2298         if (!tsi148_device) {
2299                 retval = -ENOMEM;
2300                 goto err_driver;
2301         }
2302 
2303         tsi148_bridge->driver_priv = tsi148_device;
2304 
2305         /* Enable the device */
2306         retval = pci_enable_device(pdev);
2307         if (retval) {
2308                 dev_err(&pdev->dev, "Unable to enable device\n");
2309                 goto err_enable;
2310         }
2311 
2312         /* Map Registers */
2313         retval = pci_request_regions(pdev, driver_name);
2314         if (retval) {
2315                 dev_err(&pdev->dev, "Unable to reserve resources\n");
2316                 goto err_resource;
2317         }
2318 
2319         /* map registers in BAR 0 */
2320         tsi148_device->base = ioremap_nocache(pci_resource_start(pdev, 0),
2321                 4096);
2322         if (!tsi148_device->base) {
2323                 dev_err(&pdev->dev, "Unable to remap CRG region\n");
2324                 retval = -EIO;
2325                 goto err_remap;
2326         }
2327 
2328         /* Check to see if the mapping worked out */
2329         data = ioread32(tsi148_device->base + TSI148_PCFS_ID) & 0x0000FFFF;
2330         if (data != PCI_VENDOR_ID_TUNDRA) {
2331                 dev_err(&pdev->dev, "CRG region check failed\n");
2332                 retval = -EIO;
2333                 goto err_test;
2334         }
2335 
2336         /* Initialize wait queues & mutual exclusion flags */
2337         init_waitqueue_head(&tsi148_device->dma_queue[0]);
2338         init_waitqueue_head(&tsi148_device->dma_queue[1]);
2339         init_waitqueue_head(&tsi148_device->iack_queue);
2340         mutex_init(&tsi148_device->vme_int);
2341         mutex_init(&tsi148_device->vme_rmw);
2342 
2343         tsi148_bridge->parent = &pdev->dev;
2344         strcpy(tsi148_bridge->name, driver_name);
2345 
2346         /* Setup IRQ */
2347         retval = tsi148_irq_init(tsi148_bridge);
2348         if (retval != 0) {
2349                 dev_err(&pdev->dev, "Chip Initialization failed.\n");
2350                 goto err_irq;
2351         }
2352 
2353         /* If we are going to flush writes, we need to read from the VME bus.
2354          * We need to do this safely, thus we read the devices own CR/CSR
2355          * register. To do this we must set up a window in CR/CSR space and
2356          * hence have one less master window resource available.
2357          */
2358         master_num = TSI148_MAX_MASTER;
2359         if (err_chk) {
2360                 master_num--;
2361 
2362                 tsi148_device->flush_image =
2363                         kmalloc(sizeof(*tsi148_device->flush_image),
2364                                 GFP_KERNEL);
2365                 if (!tsi148_device->flush_image) {
2366                         retval = -ENOMEM;
2367                         goto err_master;
2368                 }
2369                 tsi148_device->flush_image->parent = tsi148_bridge;
2370                 spin_lock_init(&tsi148_device->flush_image->lock);
2371                 tsi148_device->flush_image->locked = 1;
2372                 tsi148_device->flush_image->number = master_num;
2373                 memset(&tsi148_device->flush_image->bus_resource, 0,
2374                        sizeof(tsi148_device->flush_image->bus_resource));
2375                 tsi148_device->flush_image->kern_base  = NULL;
2376         }
2377 
2378         /* Add master windows to list */
2379         for (i = 0; i < master_num; i++) {
2380                 master_image = kmalloc(sizeof(*master_image), GFP_KERNEL);
2381                 if (!master_image) {
2382                         retval = -ENOMEM;
2383                         goto err_master;
2384                 }
2385                 master_image->parent = tsi148_bridge;
2386                 spin_lock_init(&master_image->lock);
2387                 master_image->locked = 0;
2388                 master_image->number = i;
2389                 master_image->address_attr = VME_A16 | VME_A24 | VME_A32 |
2390                         VME_A64 | VME_CRCSR | VME_USER1 | VME_USER2 |
2391                         VME_USER3 | VME_USER4;
2392                 master_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT |
2393                         VME_2eVME | VME_2eSST | VME_2eSSTB | VME_2eSST160 |
2394                         VME_2eSST267 | VME_2eSST320 | VME_SUPER | VME_USER |
2395                         VME_PROG | VME_DATA;
2396                 master_image->width_attr = VME_D16 | VME_D32;
2397                 memset(&master_image->bus_resource, 0,
2398                        sizeof(master_image->bus_resource));
2399                 master_image->kern_base  = NULL;
2400                 list_add_tail(&master_image->list,
2401                         &tsi148_bridge->master_resources);
2402         }
2403 
2404         /* Add slave windows to list */
2405         for (i = 0; i < TSI148_MAX_SLAVE; i++) {
2406                 slave_image = kmalloc(sizeof(*slave_image), GFP_KERNEL);
2407                 if (!slave_image) {
2408                         retval = -ENOMEM;
2409                         goto err_slave;
2410                 }
2411                 slave_image->parent = tsi148_bridge;
2412                 mutex_init(&slave_image->mtx);
2413                 slave_image->locked = 0;
2414                 slave_image->number = i;
2415                 slave_image->address_attr = VME_A16 | VME_A24 | VME_A32 |
2416                         VME_A64;
2417                 slave_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT |
2418                         VME_2eVME | VME_2eSST | VME_2eSSTB | VME_2eSST160 |
2419                         VME_2eSST267 | VME_2eSST320 | VME_SUPER | VME_USER |
2420                         VME_PROG | VME_DATA;
2421                 list_add_tail(&slave_image->list,
2422                         &tsi148_bridge->slave_resources);
2423         }
2424 
2425         /* Add dma engines to list */
2426         for (i = 0; i < TSI148_MAX_DMA; i++) {
2427                 dma_ctrlr = kmalloc(sizeof(*dma_ctrlr), GFP_KERNEL);
2428                 if (!dma_ctrlr) {
2429                         retval = -ENOMEM;
2430                         goto err_dma;
2431                 }
2432                 dma_ctrlr->parent = tsi148_bridge;
2433                 mutex_init(&dma_ctrlr->mtx);
2434                 dma_ctrlr->locked = 0;
2435                 dma_ctrlr->number = i;
2436                 dma_ctrlr->route_attr = VME_DMA_VME_TO_MEM |
2437                         VME_DMA_MEM_TO_VME | VME_DMA_VME_TO_VME |
2438                         VME_DMA_MEM_TO_MEM | VME_DMA_PATTERN_TO_VME |
2439                         VME_DMA_PATTERN_TO_MEM;
2440                 INIT_LIST_HEAD(&dma_ctrlr->pending);
2441                 INIT_LIST_HEAD(&dma_ctrlr->running);
2442                 list_add_tail(&dma_ctrlr->list,
2443                         &tsi148_bridge->dma_resources);
2444         }
2445 
2446         /* Add location monitor to list */
2447         lm = kmalloc(sizeof(*lm), GFP_KERNEL);
2448         if (!lm) {
2449                 retval = -ENOMEM;
2450                 goto err_lm;
2451         }
2452         lm->parent = tsi148_bridge;
2453         mutex_init(&lm->mtx);
2454         lm->locked = 0;
2455         lm->number = 1;
2456         lm->monitors = 4;
2457         list_add_tail(&lm->list, &tsi148_bridge->lm_resources);
2458 
2459         tsi148_bridge->slave_get = tsi148_slave_get;
2460         tsi148_bridge->slave_set = tsi148_slave_set;
2461         tsi148_bridge->master_get = tsi148_master_get;
2462         tsi148_bridge->master_set = tsi148_master_set;
2463         tsi148_bridge->master_read = tsi148_master_read;
2464         tsi148_bridge->master_write = tsi148_master_write;
2465         tsi148_bridge->master_rmw = tsi148_master_rmw;
2466         tsi148_bridge->dma_list_add = tsi148_dma_list_add;
2467         tsi148_bridge->dma_list_exec = tsi148_dma_list_exec;
2468         tsi148_bridge->dma_list_empty = tsi148_dma_list_empty;
2469         tsi148_bridge->irq_set = tsi148_irq_set;
2470         tsi148_bridge->irq_generate = tsi148_irq_generate;
2471         tsi148_bridge->lm_set = tsi148_lm_set;
2472         tsi148_bridge->lm_get = tsi148_lm_get;
2473         tsi148_bridge->lm_attach = tsi148_lm_attach;
2474         tsi148_bridge->lm_detach = tsi148_lm_detach;
2475         tsi148_bridge->slot_get = tsi148_slot_get;
2476         tsi148_bridge->alloc_consistent = tsi148_alloc_consistent;
2477         tsi148_bridge->free_consistent = tsi148_free_consistent;
2478 
2479         data = ioread32be(tsi148_device->base + TSI148_LCSR_VSTAT);
2480         dev_info(&pdev->dev, "Board is%s the VME system controller\n",
2481                 (data & TSI148_LCSR_VSTAT_SCONS) ? "" : " not");
2482         if (!geoid)
2483                 dev_info(&pdev->dev, "VME geographical address is %d\n",
2484                         data & TSI148_LCSR_VSTAT_GA_M);
2485         else
2486                 dev_info(&pdev->dev, "VME geographical address is set to %d\n",
2487                         geoid);
2488 
2489         dev_info(&pdev->dev, "VME Write and flush and error check is %s\n",
2490                 err_chk ? "enabled" : "disabled");
2491 
2492         retval = tsi148_crcsr_init(tsi148_bridge, pdev);
2493         if (retval) {
2494                 dev_err(&pdev->dev, "CR/CSR configuration failed.\n");
2495                 goto err_crcsr;
2496         }
2497 
2498         retval = vme_register_bridge(tsi148_bridge);
2499         if (retval != 0) {
2500                 dev_err(&pdev->dev, "Chip Registration failed.\n");
2501                 goto err_reg;
2502         }
2503 
2504         pci_set_drvdata(pdev, tsi148_bridge);
2505 
2506         /* Clear VME bus "board fail", and "power-up reset" lines */
2507         data = ioread32be(tsi148_device->base + TSI148_LCSR_VSTAT);
2508         data &= ~TSI148_LCSR_VSTAT_BRDFL;
2509         data |= TSI148_LCSR_VSTAT_CPURST;
2510         iowrite32be(data, tsi148_device->base + TSI148_LCSR_VSTAT);
2511 
2512         return 0;
2513 
2514 err_reg:
2515         tsi148_crcsr_exit(tsi148_bridge, pdev);
2516 err_crcsr:
2517 err_lm:
2518         /* resources are stored in link list */
2519         list_for_each_safe(pos, n, &tsi148_bridge->lm_resources) {
2520                 lm = list_entry(pos, struct vme_lm_resource, list);
2521                 list_del(pos);
2522                 kfree(lm);
2523         }
2524 err_dma:
2525         /* resources are stored in link list */
2526         list_for_each_safe(pos, n, &tsi148_bridge->dma_resources) {
2527                 dma_ctrlr = list_entry(pos, struct vme_dma_resource, list);
2528                 list_del(pos);
2529                 kfree(dma_ctrlr);
2530         }
2531 err_slave:
2532         /* resources are stored in link list */
2533         list_for_each_safe(pos, n, &tsi148_bridge->slave_resources) {
2534                 slave_image = list_entry(pos, struct vme_slave_resource, list);
2535                 list_del(pos);
2536                 kfree(slave_image);
2537         }
2538 err_master:
2539         /* resources are stored in link list */
2540         list_for_each_safe(pos, n, &tsi148_bridge->master_resources) {
2541                 master_image = list_entry(pos, struct vme_master_resource,
2542                         list);
2543                 list_del(pos);
2544                 kfree(master_image);
2545         }
2546 
2547         tsi148_irq_exit(tsi148_bridge, pdev);
2548 err_irq:
2549 err_test:
2550         iounmap(tsi148_device->base);
2551 err_remap:
2552         pci_release_regions(pdev);
2553 err_resource:
2554         pci_disable_device(pdev);
2555 err_enable:
2556         kfree(tsi148_device);
2557 err_driver:
2558         kfree(tsi148_bridge);
2559 err_struct:
2560         return retval;
2561 
2562 }
2563 
2564 static void tsi148_remove(struct pci_dev *pdev)
2565 {
2566         struct list_head *pos = NULL;
2567         struct list_head *tmplist;
2568         struct vme_master_resource *master_image;
2569         struct vme_slave_resource *slave_image;
2570         struct vme_dma_resource *dma_ctrlr;
2571         int i;
2572         struct tsi148_driver *bridge;
2573         struct vme_bridge *tsi148_bridge = pci_get_drvdata(pdev);
2574 
2575         bridge = tsi148_bridge->driver_priv;
2576 
2577 
2578         dev_dbg(&pdev->dev, "Driver is being unloaded.\n");
2579 
2580         /*
2581          *  Shutdown all inbound and outbound windows.
2582          */
2583         for (i = 0; i < 8; i++) {
2584                 iowrite32be(0, bridge->base + TSI148_LCSR_IT[i] +
2585                         TSI148_LCSR_OFFSET_ITAT);
2586                 iowrite32be(0, bridge->base + TSI148_LCSR_OT[i] +
2587                         TSI148_LCSR_OFFSET_OTAT);
2588         }
2589 
2590         /*
2591          *  Shutdown Location monitor.
2592          */
2593         iowrite32be(0, bridge->base + TSI148_LCSR_LMAT);
2594 
2595         /*
2596          *  Shutdown CRG map.
2597          */
2598         iowrite32be(0, bridge->base + TSI148_LCSR_CSRAT);
2599 
2600         /*
2601          *  Clear error status.
2602          */
2603         iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_EDPAT);
2604         iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_VEAT);
2605         iowrite32be(0x07000700, bridge->base + TSI148_LCSR_PSTAT);
2606 
2607         /*
2608          *  Remove VIRQ interrupt (if any)
2609          */
2610         if (ioread32be(bridge->base + TSI148_LCSR_VICR) & 0x800)
2611                 iowrite32be(0x8000, bridge->base + TSI148_LCSR_VICR);
2612 
2613         /*
2614          *  Map all Interrupts to PCI INTA
2615          */
2616         iowrite32be(0x0, bridge->base + TSI148_LCSR_INTM1);
2617         iowrite32be(0x0, bridge->base + TSI148_LCSR_INTM2);
2618 
2619         tsi148_irq_exit(tsi148_bridge, pdev);
2620 
2621         vme_unregister_bridge(tsi148_bridge);
2622 
2623         tsi148_crcsr_exit(tsi148_bridge, pdev);
2624 
2625         /* resources are stored in link list */
2626         list_for_each_safe(pos, tmplist, &tsi148_bridge->dma_resources) {
2627                 dma_ctrlr = list_entry(pos, struct vme_dma_resource, list);
2628                 list_del(pos);
2629                 kfree(dma_ctrlr);
2630         }
2631 
2632         /* resources are stored in link list */
2633         list_for_each_safe(pos, tmplist, &tsi148_bridge->slave_resources) {
2634                 slave_image = list_entry(pos, struct vme_slave_resource, list);
2635                 list_del(pos);
2636                 kfree(slave_image);
2637         }
2638 
2639         /* resources are stored in link list */
2640         list_for_each_safe(pos, tmplist, &tsi148_bridge->master_resources) {
2641                 master_image = list_entry(pos, struct vme_master_resource,
2642                         list);
2643                 list_del(pos);
2644                 kfree(master_image);
2645         }
2646 
2647         iounmap(bridge->base);
2648 
2649         pci_release_regions(pdev);
2650 
2651         pci_disable_device(pdev);
2652 
2653         kfree(tsi148_bridge->driver_priv);
2654 
2655         kfree(tsi148_bridge);
2656 }
2657 
2658 module_pci_driver(tsi148_driver);
2659 
2660 MODULE_PARM_DESC(err_chk, "Check for VME errors on reads and writes");
2661 module_param(err_chk, bool, 0);
2662 
2663 MODULE_PARM_DESC(geoid, "Override geographical addressing");
2664 module_param(geoid, int, 0);
2665 
2666 MODULE_DESCRIPTION("VME driver for the Tundra Tempe VME bridge");
2667 MODULE_LICENSE("GPL");
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/vme/bridges/vme_tsi148.c

DEFINITIONS
