drivers/net/ethernet/neterion/vxge/vxge-config.c

   1 /******************************************************************************
   2  * This software may be used and distributed according to the terms of
   3  * the GNU General Public License (GPL), incorporated herein by reference.
   4  * Drivers based on or derived from this code fall under the GPL and must
   5  * retain the authorship, copyright and license notice.  This file is not
   6  * a complete program and may only be used when the entire operating
   7  * system is licensed under the GPL.
   8  * See the file COPYING in this distribution for more information.
   9  *
  10  * vxge-config.c: Driver for Exar Corp's X3100 Series 10GbE PCIe I/O
  11  *                Virtualized Server Adapter.
  12  * Copyright(c) 2002-2010 Exar Corp.
  13  ******************************************************************************/
  14 #include <linux/vmalloc.h>
  15 #include <linux/etherdevice.h>
  16 #include <linux/io-64-nonatomic-lo-hi.h>
  17 #include <linux/pci.h>
  18 #include <linux/slab.h>
  19
  20 #include "vxge-traffic.h"
  21 #include "vxge-config.h"
  22 #include "vxge-main.h"
  23
  24 #define VXGE_HW_VPATH_STATS_PIO_READ(offset) {                          \
  25         status = __vxge_hw_vpath_stats_access(vpath,                    \
  26                                               VXGE_HW_STATS_OP_READ,    \
  27                                               offset,                   \
  28                                               &val64);                  \
  29         if (status != VXGE_HW_OK)                                       \
  30                 return status;                                          \
  31 }
  32
  33 static void
  34 vxge_hw_vpath_set_zero_rx_frm_len(struct vxge_hw_vpath_reg __iomem *vp_reg)
  35 {
  36         u64 val64;
  37
  38         val64 = readq(&vp_reg->rxmac_vcfg0);
  39         val64 &= ~VXGE_HW_RXMAC_VCFG0_RTS_MAX_FRM_LEN(0x3fff);
  40         writeq(val64, &vp_reg->rxmac_vcfg0);
  41         val64 = readq(&vp_reg->rxmac_vcfg0);
  42 }
  43
  44 /*
  45  * vxge_hw_vpath_wait_receive_idle - Wait for Rx to become idle
  46  */
  47 int vxge_hw_vpath_wait_receive_idle(struct __vxge_hw_device *hldev, u32 vp_id)
  48 {
  49         struct vxge_hw_vpath_reg __iomem *vp_reg;
  50         struct __vxge_hw_virtualpath *vpath;
  51         u64 val64, rxd_count, rxd_spat;
  52         int count = 0, total_count = 0;
  53
  54         vpath = &hldev->virtual_paths[vp_id];
  55         vp_reg = vpath->vp_reg;
  56
  57         vxge_hw_vpath_set_zero_rx_frm_len(vp_reg);
  58
  59         /* Check that the ring controller for this vpath has enough free RxDs
  60          * to send frames to the host.  This is done by reading the
  61          * PRC_RXD_DOORBELL_VPn register and comparing the read value to the
  62          * RXD_SPAT value for the vpath.
  63          */
  64         val64 = readq(&vp_reg->prc_cfg6);
  65         rxd_spat = VXGE_HW_PRC_CFG6_GET_RXD_SPAT(val64) + 1;
  66         /* Use a factor of 2 when comparing rxd_count against rxd_spat for some
  67          * leg room.
  68          */
  69         rxd_spat *= 2;
  70
  71         do {
  72                 mdelay(1);
  73
  74                 rxd_count = readq(&vp_reg->prc_rxd_doorbell);
  75
  76                 /* Check that the ring controller for this vpath does
  77                  * not have any frame in its pipeline.
  78                  */
  79                 val64 = readq(&vp_reg->frm_in_progress_cnt);
  80                 if ((rxd_count <= rxd_spat) || (val64 > 0))
  81                         count = 0;
  82                 else
  83                         count++;
  84                 total_count++;
  85         } while ((count < VXGE_HW_MIN_SUCCESSIVE_IDLE_COUNT) &&
  86                         (total_count < VXGE_HW_MAX_POLLING_COUNT));
  87
  88         if (total_count >= VXGE_HW_MAX_POLLING_COUNT)
  89                 printk(KERN_ALERT "%s: Still Receiving traffic. Abort wait\n",
  90                         __func__);
  91
  92         return total_count;
  93 }
  94
  95 /* vxge_hw_device_wait_receive_idle - This function waits until all frames
  96  * stored in the frame buffer for each vpath assigned to the given
  97  * function (hldev) have been sent to the host.
  98  */
  99 void vxge_hw_device_wait_receive_idle(struct __vxge_hw_device *hldev)
 100 {
 101         int i, total_count = 0;
 102
 103         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
 104                 if (!(hldev->vpaths_deployed & vxge_mBIT(i)))
 105                         continue;
 106
 107                 total_count += vxge_hw_vpath_wait_receive_idle(hldev, i);
 108                 if (total_count >= VXGE_HW_MAX_POLLING_COUNT)
 109                         break;
 110         }
 111 }
 112
 113 /*
 114  * __vxge_hw_device_register_poll
 115  * Will poll certain register for specified amount of time.
 116  * Will poll until masked bit is not cleared.
 117  */
 118 static enum vxge_hw_status
 119 __vxge_hw_device_register_poll(void __iomem *reg, u64 mask, u32 max_millis)
 120 {
 121         u64 val64;
 122         u32 i = 0;
 123
 124         udelay(10);
 125
 126         do {
 127                 val64 = readq(reg);
 128                 if (!(val64 & mask))
 129                         return VXGE_HW_OK;
 130                 udelay(100);
 131         } while (++i <= 9);
 132
 133         i = 0;
 134         do {
 135                 val64 = readq(reg);
 136                 if (!(val64 & mask))
 137                         return VXGE_HW_OK;
 138                 mdelay(1);
 139         } while (++i <= max_millis);
 140
 141         return VXGE_HW_FAIL;
 142 }
 143
 144 static inline enum vxge_hw_status
 145 __vxge_hw_pio_mem_write64(u64 val64, void __iomem *addr,
 146                           u64 mask, u32 max_millis)
 147 {
 148         __vxge_hw_pio_mem_write32_lower((u32)vxge_bVALn(val64, 32, 32), addr);
 149         wmb();
 150         __vxge_hw_pio_mem_write32_upper((u32)vxge_bVALn(val64, 0, 32), addr);
 151         wmb();
 152
 153         return __vxge_hw_device_register_poll(addr, mask, max_millis);
 154 }
 155
 156 static enum vxge_hw_status
 157 vxge_hw_vpath_fw_api(struct __vxge_hw_virtualpath *vpath, u32 action,
 158                      u32 fw_memo, u32 offset, u64 *data0, u64 *data1,
 159                      u64 *steer_ctrl)
 160 {
 161         struct vxge_hw_vpath_reg __iomem *vp_reg = vpath->vp_reg;
 162         enum vxge_hw_status status;
 163         u64 val64;
 164         u32 retry = 0, max_retry = 3;
 165
 166         spin_lock(&vpath->lock);
 167         if (!vpath->vp_open) {
 168                 spin_unlock(&vpath->lock);
 169                 max_retry = 100;
 170         }
 171
 172         writeq(*data0, &vp_reg->rts_access_steer_data0);
 173         writeq(*data1, &vp_reg->rts_access_steer_data1);
 174         wmb();
 175
 176         val64 = VXGE_HW_RTS_ACCESS_STEER_CTRL_ACTION(action) |
 177                 VXGE_HW_RTS_ACCESS_STEER_CTRL_DATA_STRUCT_SEL(fw_memo) |
 178                 VXGE_HW_RTS_ACCESS_STEER_CTRL_OFFSET(offset) |
 179                 VXGE_HW_RTS_ACCESS_STEER_CTRL_STROBE |
 180                 *steer_ctrl;
 181
 182         status = __vxge_hw_pio_mem_write64(val64,
 183                                            &vp_reg->rts_access_steer_ctrl,
 184                                            VXGE_HW_RTS_ACCESS_STEER_CTRL_STROBE,
 185                                            VXGE_HW_DEF_DEVICE_POLL_MILLIS);
 186
 187         /* The __vxge_hw_device_register_poll can udelay for a significant
 188          * amount of time, blocking other process from the CPU.  If it delays
 189          * for ~5secs, a NMI error can occur.  A way around this is to give up
 190          * the processor via msleep, but this is not allowed is under lock.
 191          * So, only allow it to sleep for ~4secs if open.  Otherwise, delay for
 192          * 1sec and sleep for 10ms until the firmware operation has completed
 193          * or timed-out.
 194          */
 195         while ((status != VXGE_HW_OK) && retry++ < max_retry) {
 196                 if (!vpath->vp_open)
 197                         msleep(20);
 198                 status = __vxge_hw_device_register_poll(
 199                                         &vp_reg->rts_access_steer_ctrl,
 200                                         VXGE_HW_RTS_ACCESS_STEER_CTRL_STROBE,
 201                                         VXGE_HW_DEF_DEVICE_POLL_MILLIS);
 202         }
 203
 204         if (status != VXGE_HW_OK)
 205                 goto out;
 206
 207         val64 = readq(&vp_reg->rts_access_steer_ctrl);
 208         if (val64 & VXGE_HW_RTS_ACCESS_STEER_CTRL_RMACJ_STATUS) {
 209                 *data0 = readq(&vp_reg->rts_access_steer_data0);
 210                 *data1 = readq(&vp_reg->rts_access_steer_data1);
 211                 *steer_ctrl = val64;
 212         } else
 213                 status = VXGE_HW_FAIL;
 214
 215 out:
 216         if (vpath->vp_open)
 217                 spin_unlock(&vpath->lock);
 218         return status;
 219 }
 220
 221 enum vxge_hw_status
 222 vxge_hw_upgrade_read_version(struct __vxge_hw_device *hldev, u32 *major,
 223                              u32 *minor, u32 *build)
 224 {
 225         u64 data0 = 0, data1 = 0, steer_ctrl = 0;
 226         struct __vxge_hw_virtualpath *vpath;
 227         enum vxge_hw_status status;
 228
 229         vpath = &hldev->virtual_paths[hldev->first_vp_id];
 230
 231         status = vxge_hw_vpath_fw_api(vpath,
 232                                       VXGE_HW_FW_UPGRADE_ACTION,
 233                                       VXGE_HW_FW_UPGRADE_MEMO,
 234                                       VXGE_HW_FW_UPGRADE_OFFSET_READ,
 235                                       &data0, &data1, &steer_ctrl);
 236         if (status != VXGE_HW_OK)
 237                 return status;
 238
 239         *major = VXGE_HW_RTS_ACCESS_STEER_DATA0_GET_FW_VER_MAJOR(data0);
 240         *minor = VXGE_HW_RTS_ACCESS_STEER_DATA0_GET_FW_VER_MINOR(data0);
 241         *build = VXGE_HW_RTS_ACCESS_STEER_DATA0_GET_FW_VER_BUILD(data0);
 242
 243         return status;
 244 }
 245
 246 enum vxge_hw_status vxge_hw_flash_fw(struct __vxge_hw_device *hldev)
 247 {
 248         u64 data0 = 0, data1 = 0, steer_ctrl = 0;
 249         struct __vxge_hw_virtualpath *vpath;
 250         enum vxge_hw_status status;
 251         u32 ret;
 252
 253         vpath = &hldev->virtual_paths[hldev->first_vp_id];
 254
 255         status = vxge_hw_vpath_fw_api(vpath,
 256                                       VXGE_HW_FW_UPGRADE_ACTION,
 257                                       VXGE_HW_FW_UPGRADE_MEMO,
 258                                       VXGE_HW_FW_UPGRADE_OFFSET_COMMIT,
 259                                       &data0, &data1, &steer_ctrl);
 260         if (status != VXGE_HW_OK) {
 261                 vxge_debug_init(VXGE_ERR, "%s: FW upgrade failed", __func__);
 262                 goto exit;
 263         }
 264
 265         ret = VXGE_HW_RTS_ACCESS_STEER_CTRL_GET_ACTION(steer_ctrl) & 0x7F;
 266         if (ret != 1) {
 267                 vxge_debug_init(VXGE_ERR, "%s: FW commit failed with error %d",
 268                                 __func__, ret);
 269                 status = VXGE_HW_FAIL;
 270         }
 271
 272 exit:
 273         return status;
 274 }
 275
 276 enum vxge_hw_status
 277 vxge_update_fw_image(struct __vxge_hw_device *hldev, const u8 *fwdata, int size)
 278 {
 279         u64 data0 = 0, data1 = 0, steer_ctrl = 0;
 280         struct __vxge_hw_virtualpath *vpath;
 281         enum vxge_hw_status status;
 282         int ret_code, sec_code;
 283
 284         vpath = &hldev->virtual_paths[hldev->first_vp_id];
 285
 286         /* send upgrade start command */
 287         status = vxge_hw_vpath_fw_api(vpath,
 288                                       VXGE_HW_FW_UPGRADE_ACTION,
 289                                       VXGE_HW_FW_UPGRADE_MEMO,
 290                                       VXGE_HW_FW_UPGRADE_OFFSET_START,
 291                                       &data0, &data1, &steer_ctrl);
 292         if (status != VXGE_HW_OK) {
 293                 vxge_debug_init(VXGE_ERR, " %s: Upgrade start cmd failed",
 294                                 __func__);
 295                 return status;
 296         }
 297
 298         /* Transfer fw image to adapter 16 bytes at a time */
 299         for (; size > 0; size -= VXGE_HW_FW_UPGRADE_BLK_SIZE) {
 300                 steer_ctrl = 0;
 301
 302                 /* The next 128bits of fwdata to be loaded onto the adapter */
 303                 data0 = *((u64 *)fwdata);
 304                 data1 = *((u64 *)fwdata + 1);
 305
 306                 status = vxge_hw_vpath_fw_api(vpath,
 307                                               VXGE_HW_FW_UPGRADE_ACTION,
 308                                               VXGE_HW_FW_UPGRADE_MEMO,
 309                                               VXGE_HW_FW_UPGRADE_OFFSET_SEND,
 310                                               &data0, &data1, &steer_ctrl);
 311                 if (status != VXGE_HW_OK) {
 312                         vxge_debug_init(VXGE_ERR, "%s: Upgrade send failed",
 313                                         __func__);
 314                         goto out;
 315                 }
 316
 317                 ret_code = VXGE_HW_UPGRADE_GET_RET_ERR_CODE(data0);
 318                 switch (ret_code) {
 319                 case VXGE_HW_FW_UPGRADE_OK:
 320                         /* All OK, send next 16 bytes. */
 321                         break;
 322                 case VXGE_FW_UPGRADE_BYTES2SKIP:
 323                         /* skip bytes in the stream */
 324                         fwdata += (data0 >> 8) & 0xFFFFFFFF;
 325                         break;
 326                 case VXGE_HW_FW_UPGRADE_DONE:
 327                         goto out;
 328                 case VXGE_HW_FW_UPGRADE_ERR:
 329                         sec_code = VXGE_HW_UPGRADE_GET_SEC_ERR_CODE(data0);
 330                         switch (sec_code) {
 331                         case VXGE_HW_FW_UPGRADE_ERR_CORRUPT_DATA_1:
 332                         case VXGE_HW_FW_UPGRADE_ERR_CORRUPT_DATA_7:
 333                                 printk(KERN_ERR
 334                                        "corrupted data from .ncf file\n");
 335                                 break;
 336                         case VXGE_HW_FW_UPGRADE_ERR_INV_NCF_FILE_3:
 337                         case VXGE_HW_FW_UPGRADE_ERR_INV_NCF_FILE_4:
 338                         case VXGE_HW_FW_UPGRADE_ERR_INV_NCF_FILE_5:
 339                         case VXGE_HW_FW_UPGRADE_ERR_INV_NCF_FILE_6:
 340                         case VXGE_HW_FW_UPGRADE_ERR_INV_NCF_FILE_8:
 341                                 printk(KERN_ERR "invalid .ncf file\n");
 342                                 break;
 343                         case VXGE_HW_FW_UPGRADE_ERR_BUFFER_OVERFLOW:
 344                                 printk(KERN_ERR "buffer overflow\n");
 345                                 break;
 346                         case VXGE_HW_FW_UPGRADE_ERR_FAILED_TO_FLASH:
 347                                 printk(KERN_ERR "failed to flash the image\n");
 348                                 break;
 349                         case VXGE_HW_FW_UPGRADE_ERR_GENERIC_ERROR_UNKNOWN:
 350                                 printk(KERN_ERR
 351                                        "generic error. Unknown error type\n");
 352                                 break;
 353                         default:
 354                                 printk(KERN_ERR "Unknown error of type %d\n",
 355                                        sec_code);
 356                                 break;
 357                         }
 358                         status = VXGE_HW_FAIL;
 359                         goto out;
 360                 default:
 361                         printk(KERN_ERR "Unknown FW error: %d\n", ret_code);
 362                         status = VXGE_HW_FAIL;
 363                         goto out;
 364                 }
 365                 /* point to next 16 bytes */
 366                 fwdata += VXGE_HW_FW_UPGRADE_BLK_SIZE;
 367         }
 368 out:
 369         return status;
 370 }
 371
 372 enum vxge_hw_status
 373 vxge_hw_vpath_eprom_img_ver_get(struct __vxge_hw_device *hldev,
 374                                 struct eprom_image *img)
 375 {
 376         u64 data0 = 0, data1 = 0, steer_ctrl = 0;
 377         struct __vxge_hw_virtualpath *vpath;
 378         enum vxge_hw_status status;
 379         int i;
 380
 381         vpath = &hldev->virtual_paths[hldev->first_vp_id];
 382
 383         for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++) {
 384                 data0 = VXGE_HW_RTS_ACCESS_STEER_ROM_IMAGE_INDEX(i);
 385                 data1 = steer_ctrl = 0;
 386
 387                 status = vxge_hw_vpath_fw_api(vpath,
 388                         VXGE_HW_FW_API_GET_EPROM_REV,
 389                         VXGE_HW_RTS_ACCESS_STEER_CTRL_DATA_STRUCT_SEL_FW_MEMO,
 390                         0, &data0, &data1, &steer_ctrl);
 391                 if (status != VXGE_HW_OK)
 392                         break;
 393
 394                 img[i].is_valid = VXGE_HW_GET_EPROM_IMAGE_VALID(data0);
 395                 img[i].index = VXGE_HW_GET_EPROM_IMAGE_INDEX(data0);
 396                 img[i].type = VXGE_HW_GET_EPROM_IMAGE_TYPE(data0);
 397                 img[i].version = VXGE_HW_GET_EPROM_IMAGE_REV(data0);
 398         }
 399
 400         return status;
 401 }
 402
 403 /*
 404  * __vxge_hw_channel_free - Free memory allocated for channel
 405  * This function deallocates memory from the channel and various arrays
 406  * in the channel
 407  */
 408 static void __vxge_hw_channel_free(struct __vxge_hw_channel *channel)
 409 {
 410         kfree(channel->work_arr);
 411         kfree(channel->free_arr);
 412         kfree(channel->reserve_arr);
 413         kfree(channel->orig_arr);
 414         kfree(channel);
 415 }
 416
 417 /*
 418  * __vxge_hw_channel_initialize - Initialize a channel
 419  * This function initializes a channel by properly setting the
 420  * various references
 421  */
 422 static enum vxge_hw_status
 423 __vxge_hw_channel_initialize(struct __vxge_hw_channel *channel)
 424 {
 425         u32 i;
 426         struct __vxge_hw_virtualpath *vpath;
 427
 428         vpath = channel->vph->vpath;
 429
 430         if ((channel->reserve_arr != NULL) && (channel->orig_arr != NULL)) {
 431                 for (i = 0; i < channel->length; i++)
 432                         channel->orig_arr[i] = channel->reserve_arr[i];
 433         }
 434
 435         switch (channel->type) {
 436         case VXGE_HW_CHANNEL_TYPE_FIFO:
 437                 vpath->fifoh = (struct __vxge_hw_fifo *)channel;
 438                 channel->stats = &((struct __vxge_hw_fifo *)
 439                                 channel)->stats->common_stats;
 440                 break;
 441         case VXGE_HW_CHANNEL_TYPE_RING:
 442                 vpath->ringh = (struct __vxge_hw_ring *)channel;
 443                 channel->stats = &((struct __vxge_hw_ring *)
 444                                 channel)->stats->common_stats;
 445                 break;
 446         default:
 447                 break;
 448         }
 449
 450         return VXGE_HW_OK;
 451 }
 452
 453 /*
 454  * __vxge_hw_channel_reset - Resets a channel
 455  * This function resets a channel by properly setting the various references
 456  */
 457 static enum vxge_hw_status
 458 __vxge_hw_channel_reset(struct __vxge_hw_channel *channel)
 459 {
 460         u32 i;
 461
 462         for (i = 0; i < channel->length; i++) {
 463                 if (channel->reserve_arr != NULL)
 464                         channel->reserve_arr[i] = channel->orig_arr[i];
 465                 if (channel->free_arr != NULL)
 466                         channel->free_arr[i] = NULL;
 467                 if (channel->work_arr != NULL)
 468                         channel->work_arr[i] = NULL;
 469         }
 470         channel->free_ptr = channel->length;
 471         channel->reserve_ptr = channel->length;
 472         channel->reserve_top = 0;
 473         channel->post_index = 0;
 474         channel->compl_index = 0;
 475
 476         return VXGE_HW_OK;
 477 }
 478
 479 /*
 480  * __vxge_hw_device_pci_e_init
 481  * Initialize certain PCI/PCI-X configuration registers
 482  * with recommended values. Save config space for future hw resets.
 483  */
 484 static void __vxge_hw_device_pci_e_init(struct __vxge_hw_device *hldev)
 485 {
 486         u16 cmd = 0;
 487
 488         /* Set the PErr Repconse bit and SERR in PCI command register. */
 489         pci_read_config_word(hldev->pdev, PCI_COMMAND, &cmd);
 490         cmd |= 0x140;
 491         pci_write_config_word(hldev->pdev, PCI_COMMAND, cmd);
 492
 493         pci_save_state(hldev->pdev);
 494 }
 495
 496 /* __vxge_hw_device_vpath_reset_in_prog_check - Check if vpath reset
 497  * in progress
 498  * This routine checks the vpath reset in progress register is turned zero
 499  */
 500 static enum vxge_hw_status
 501 __vxge_hw_device_vpath_reset_in_prog_check(u64 __iomem *vpath_rst_in_prog)
 502 {
 503         enum vxge_hw_status status;
 504         status = __vxge_hw_device_register_poll(vpath_rst_in_prog,
 505                         VXGE_HW_VPATH_RST_IN_PROG_VPATH_RST_IN_PROG(0x1ffff),
 506                         VXGE_HW_DEF_DEVICE_POLL_MILLIS);
 507         return status;
 508 }
 509
 510 /*
 511  * _hw_legacy_swapper_set - Set the swapper bits for the legacy secion.
 512  * Set the swapper bits appropriately for the lagacy section.
 513  */
 514 static enum vxge_hw_status
 515 __vxge_hw_legacy_swapper_set(struct vxge_hw_legacy_reg __iomem *legacy_reg)
 516 {
 517         u64 val64;
 518         enum vxge_hw_status status = VXGE_HW_OK;
 519
 520         val64 = readq(&legacy_reg->toc_swapper_fb);
 521
 522         wmb();
 523
 524         switch (val64) {
 525         case VXGE_HW_SWAPPER_INITIAL_VALUE:
 526                 return status;
 527
 528         case VXGE_HW_SWAPPER_BYTE_SWAPPED_BIT_FLIPPED:
 529                 writeq(VXGE_HW_SWAPPER_READ_BYTE_SWAP_ENABLE,
 530                         &legacy_reg->pifm_rd_swap_en);
 531                 writeq(VXGE_HW_SWAPPER_READ_BIT_FLAP_ENABLE,
 532                         &legacy_reg->pifm_rd_flip_en);
 533                 writeq(VXGE_HW_SWAPPER_WRITE_BYTE_SWAP_ENABLE,
 534                         &legacy_reg->pifm_wr_swap_en);
 535                 writeq(VXGE_HW_SWAPPER_WRITE_BIT_FLAP_ENABLE,
 536                         &legacy_reg->pifm_wr_flip_en);
 537                 break;
 538
 539         case VXGE_HW_SWAPPER_BYTE_SWAPPED:
 540                 writeq(VXGE_HW_SWAPPER_READ_BYTE_SWAP_ENABLE,
 541                         &legacy_reg->pifm_rd_swap_en);
 542                 writeq(VXGE_HW_SWAPPER_WRITE_BYTE_SWAP_ENABLE,
 543                         &legacy_reg->pifm_wr_swap_en);
 544                 break;
 545
 546         case VXGE_HW_SWAPPER_BIT_FLIPPED:
 547                 writeq(VXGE_HW_SWAPPER_READ_BIT_FLAP_ENABLE,
 548                         &legacy_reg->pifm_rd_flip_en);
 549                 writeq(VXGE_HW_SWAPPER_WRITE_BIT_FLAP_ENABLE,
 550                         &legacy_reg->pifm_wr_flip_en);
 551                 break;
 552         }
 553
 554         wmb();
 555
 556         val64 = readq(&legacy_reg->toc_swapper_fb);
 557
 558         if (val64 != VXGE_HW_SWAPPER_INITIAL_VALUE)
 559                 status = VXGE_HW_ERR_SWAPPER_CTRL;
 560
 561         return status;
 562 }
 563
 564 /*
 565  * __vxge_hw_device_toc_get
 566  * This routine sets the swapper and reads the toc pointer and returns the
 567  * memory mapped address of the toc
 568  */
 569 static struct vxge_hw_toc_reg __iomem *
 570 __vxge_hw_device_toc_get(void __iomem *bar0)
 571 {
 572         u64 val64;
 573         struct vxge_hw_toc_reg __iomem *toc = NULL;
 574         enum vxge_hw_status status;
 575
 576         struct vxge_hw_legacy_reg __iomem *legacy_reg =
 577                 (struct vxge_hw_legacy_reg __iomem *)bar0;
 578
 579         status = __vxge_hw_legacy_swapper_set(legacy_reg);
 580         if (status != VXGE_HW_OK)
 581                 goto exit;
 582
 583         val64 = readq(&legacy_reg->toc_first_pointer);
 584         toc = bar0 + val64;
 585 exit:
 586         return toc;
 587 }
 588
 589 /*
 590  * __vxge_hw_device_reg_addr_get
 591  * This routine sets the swapper and reads the toc pointer and initializes the
 592  * register location pointers in the device object. It waits until the ric is
 593  * completed initializing registers.
 594  */
 595 static enum vxge_hw_status
 596 __vxge_hw_device_reg_addr_get(struct __vxge_hw_device *hldev)
 597 {
 598         u64 val64;
 599         u32 i;
 600         enum vxge_hw_status status = VXGE_HW_OK;
 601
 602         hldev->legacy_reg = hldev->bar0;
 603
 604         hldev->toc_reg = __vxge_hw_device_toc_get(hldev->bar0);
 605         if (hldev->toc_reg  == NULL) {
 606                 status = VXGE_HW_FAIL;
 607                 goto exit;
 608         }
 609
 610         val64 = readq(&hldev->toc_reg->toc_common_pointer);
 611         hldev->common_reg = hldev->bar0 + val64;
 612
 613         val64 = readq(&hldev->toc_reg->toc_mrpcim_pointer);
 614         hldev->mrpcim_reg = hldev->bar0 + val64;
 615
 616         for (i = 0; i < VXGE_HW_TITAN_SRPCIM_REG_SPACES; i++) {
 617                 val64 = readq(&hldev->toc_reg->toc_srpcim_pointer[i]);
 618                 hldev->srpcim_reg[i] = hldev->bar0 + val64;
 619         }
 620
 621         for (i = 0; i < VXGE_HW_TITAN_VPMGMT_REG_SPACES; i++) {
 622                 val64 = readq(&hldev->toc_reg->toc_vpmgmt_pointer[i]);
 623                 hldev->vpmgmt_reg[i] = hldev->bar0 + val64;
 624         }
 625
 626         for (i = 0; i < VXGE_HW_TITAN_VPATH_REG_SPACES; i++) {
 627                 val64 = readq(&hldev->toc_reg->toc_vpath_pointer[i]);
 628                 hldev->vpath_reg[i] = hldev->bar0 + val64;
 629         }
 630
 631         val64 = readq(&hldev->toc_reg->toc_kdfc);
 632
 633         switch (VXGE_HW_TOC_GET_KDFC_INITIAL_BIR(val64)) {
 634         case 0:
 635                 hldev->kdfc = hldev->bar0 + VXGE_HW_TOC_GET_KDFC_INITIAL_OFFSET(val64) ;
 636                 break;
 637         default:
 638                 break;
 639         }
 640
 641         status = __vxge_hw_device_vpath_reset_in_prog_check(
 642                         (u64 __iomem *)&hldev->common_reg->vpath_rst_in_prog);
 643 exit:
 644         return status;
 645 }
 646
 647 /*
 648  * __vxge_hw_device_access_rights_get: Get Access Rights of the driver
 649  * This routine returns the Access Rights of the driver
 650  */
 651 static u32
 652 __vxge_hw_device_access_rights_get(u32 host_type, u32 func_id)
 653 {
 654         u32 access_rights = VXGE_HW_DEVICE_ACCESS_RIGHT_VPATH;
 655
 656         switch (host_type) {
 657         case VXGE_HW_NO_MR_NO_SR_NORMAL_FUNCTION:
 658                 if (func_id == 0) {
 659                         access_rights |= VXGE_HW_DEVICE_ACCESS_RIGHT_MRPCIM |
 660                                         VXGE_HW_DEVICE_ACCESS_RIGHT_SRPCIM;
 661                 }
 662                 break;
 663         case VXGE_HW_MR_NO_SR_VH0_BASE_FUNCTION:
 664                 access_rights |= VXGE_HW_DEVICE_ACCESS_RIGHT_MRPCIM |
 665                                 VXGE_HW_DEVICE_ACCESS_RIGHT_SRPCIM;
 666                 break;
 667         case VXGE_HW_NO_MR_SR_VH0_FUNCTION0:
 668                 access_rights |= VXGE_HW_DEVICE_ACCESS_RIGHT_MRPCIM |
 669                                 VXGE_HW_DEVICE_ACCESS_RIGHT_SRPCIM;
 670                 break;
 671         case VXGE_HW_NO_MR_SR_VH0_VIRTUAL_FUNCTION:
 672         case VXGE_HW_SR_VH_VIRTUAL_FUNCTION:
 673         case VXGE_HW_MR_SR_VH0_INVALID_CONFIG:
 674                 break;
 675         case VXGE_HW_SR_VH_FUNCTION0:
 676         case VXGE_HW_VH_NORMAL_FUNCTION:
 677                 access_rights |= VXGE_HW_DEVICE_ACCESS_RIGHT_SRPCIM;
 678                 break;
 679         }
 680
 681         return access_rights;
 682 }
 683 /*
 684  * __vxge_hw_device_is_privilaged
 685  * This routine checks if the device function is privilaged or not
 686  */
 687
 688 enum vxge_hw_status
 689 __vxge_hw_device_is_privilaged(u32 host_type, u32 func_id)
 690 {
 691         if (__vxge_hw_device_access_rights_get(host_type,
 692                 func_id) &
 693                 VXGE_HW_DEVICE_ACCESS_RIGHT_MRPCIM)
 694                 return VXGE_HW_OK;
 695         else
 696                 return VXGE_HW_ERR_PRIVILEGED_OPERATION;
 697 }
 698
 699 /*
 700  * __vxge_hw_vpath_func_id_get - Get the function id of the vpath.
 701  * Returns the function number of the vpath.
 702  */
 703 static u32
 704 __vxge_hw_vpath_func_id_get(struct vxge_hw_vpmgmt_reg __iomem *vpmgmt_reg)
 705 {
 706         u64 val64;
 707
 708         val64 = readq(&vpmgmt_reg->vpath_to_func_map_cfg1);
 709
 710         return
 711          (u32)VXGE_HW_VPATH_TO_FUNC_MAP_CFG1_GET_VPATH_TO_FUNC_MAP_CFG1(val64);
 712 }
 713
 714 /*
 715  * __vxge_hw_device_host_info_get
 716  * This routine returns the host type assignments
 717  */
 718 static void __vxge_hw_device_host_info_get(struct __vxge_hw_device *hldev)
 719 {
 720         u64 val64;
 721         u32 i;
 722
 723         val64 = readq(&hldev->common_reg->host_type_assignments);
 724
 725         hldev->host_type =
 726            (u32)VXGE_HW_HOST_TYPE_ASSIGNMENTS_GET_HOST_TYPE_ASSIGNMENTS(val64);
 727
 728         hldev->vpath_assignments = readq(&hldev->common_reg->vpath_assignments);
 729
 730         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
 731                 if (!(hldev->vpath_assignments & vxge_mBIT(i)))
 732                         continue;
 733
 734                 hldev->func_id =
 735                         __vxge_hw_vpath_func_id_get(hldev->vpmgmt_reg[i]);
 736
 737                 hldev->access_rights = __vxge_hw_device_access_rights_get(
 738                         hldev->host_type, hldev->func_id);
 739
 740                 hldev->virtual_paths[i].vp_open = VXGE_HW_VP_NOT_OPEN;
 741                 hldev->virtual_paths[i].vp_reg = hldev->vpath_reg[i];
 742
 743                 hldev->first_vp_id = i;
 744                 break;
 745         }
 746 }
 747
 748 /*
 749  * __vxge_hw_verify_pci_e_info - Validate the pci-e link parameters such as
 750  * link width and signalling rate.
 751  */
 752 static enum vxge_hw_status
 753 __vxge_hw_verify_pci_e_info(struct __vxge_hw_device *hldev)
 754 {
 755         struct pci_dev *dev = hldev->pdev;
 756         u16 lnk;
 757
 758         /* Get the negotiated link width and speed from PCI config space */
 759         pcie_capability_read_word(dev, PCI_EXP_LNKSTA, &lnk);
 760
 761         if ((lnk & PCI_EXP_LNKSTA_CLS) != 1)
 762                 return VXGE_HW_ERR_INVALID_PCI_INFO;
 763
 764         switch ((lnk & PCI_EXP_LNKSTA_NLW) >> 4) {
 765         case PCIE_LNK_WIDTH_RESRV:
 766         case PCIE_LNK_X1:
 767         case PCIE_LNK_X2:
 768         case PCIE_LNK_X4:
 769         case PCIE_LNK_X8:
 770                 break;
 771         default:
 772                 return VXGE_HW_ERR_INVALID_PCI_INFO;
 773         }
 774
 775         return VXGE_HW_OK;
 776 }
 777
 778 /*
 779  * __vxge_hw_device_initialize
 780  * Initialize Titan-V hardware.
 781  */
 782 static enum vxge_hw_status
 783 __vxge_hw_device_initialize(struct __vxge_hw_device *hldev)
 784 {
 785         enum vxge_hw_status status = VXGE_HW_OK;
 786
 787         if (VXGE_HW_OK == __vxge_hw_device_is_privilaged(hldev->host_type,
 788                                 hldev->func_id)) {
 789                 /* Validate the pci-e link width and speed */
 790                 status = __vxge_hw_verify_pci_e_info(hldev);
 791                 if (status != VXGE_HW_OK)
 792                         goto exit;
 793         }
 794
 795 exit:
 796         return status;
 797 }
 798
 799 /*
 800  * __vxge_hw_vpath_fw_ver_get - Get the fw version
 801  * Returns FW Version
 802  */
 803 static enum vxge_hw_status
 804 __vxge_hw_vpath_fw_ver_get(struct __vxge_hw_virtualpath *vpath,
 805                            struct vxge_hw_device_hw_info *hw_info)
 806 {
 807         struct vxge_hw_device_version *fw_version = &hw_info->fw_version;
 808         struct vxge_hw_device_date *fw_date = &hw_info->fw_date;
 809         struct vxge_hw_device_version *flash_version = &hw_info->flash_version;
 810         struct vxge_hw_device_date *flash_date = &hw_info->flash_date;
 811         u64 data0 = 0, data1 = 0, steer_ctrl = 0;
 812         enum vxge_hw_status status;
 813
 814         status = vxge_hw_vpath_fw_api(vpath,
 815                         VXGE_HW_RTS_ACCESS_STEER_CTRL_ACTION_READ_ENTRY,
 816                         VXGE_HW_RTS_ACCESS_STEER_CTRL_DATA_STRUCT_SEL_FW_MEMO,
 817                         0, &data0, &data1, &steer_ctrl);
 818         if (status != VXGE_HW_OK)
 819                 goto exit;
 820
 821         fw_date->day =
 822             (u32) VXGE_HW_RTS_ACCESS_STEER_DATA0_GET_FW_VER_DAY(data0);
 823         fw_date->month =
 824             (u32) VXGE_HW_RTS_ACCESS_STEER_DATA0_GET_FW_VER_MONTH(data0);
 825         fw_date->year =
 826             (u32) VXGE_HW_RTS_ACCESS_STEER_DATA0_GET_FW_VER_YEAR(data0);
 827
 828         snprintf(fw_date->date, VXGE_HW_FW_STRLEN, "%2.2d/%2.2d/%4.4d",
 829                  fw_date->month, fw_date->day, fw_date->year);
 830
 831         fw_version->major =
 832             (u32) VXGE_HW_RTS_ACCESS_STEER_DATA0_GET_FW_VER_MAJOR(data0);
 833         fw_version->minor =
 834             (u32) VXGE_HW_RTS_ACCESS_STEER_DATA0_GET_FW_VER_MINOR(data0);
 835         fw_version->build =
 836             (u32) VXGE_HW_RTS_ACCESS_STEER_DATA0_GET_FW_VER_BUILD(data0);
 837
 838         snprintf(fw_version->version, VXGE_HW_FW_STRLEN, "%d.%d.%d",
 839                  fw_version->major, fw_version->minor, fw_version->build);
 840
 841         flash_date->day =
 842             (u32) VXGE_HW_RTS_ACCESS_STEER_DATA1_GET_FLASH_VER_DAY(data1);
 843         flash_date->month =
 844             (u32) VXGE_HW_RTS_ACCESS_STEER_DATA1_GET_FLASH_VER_MONTH(data1);
 845         flash_date->year =
 846             (u32) VXGE_HW_RTS_ACCESS_STEER_DATA1_GET_FLASH_VER_YEAR(data1);
 847
 848         snprintf(flash_date->date, VXGE_HW_FW_STRLEN, "%2.2d/%2.2d/%4.4d",
 849                  flash_date->month, flash_date->day, flash_date->year);
 850
 851         flash_version->major =
 852             (u32) VXGE_HW_RTS_ACCESS_STEER_DATA1_GET_FLASH_VER_MAJOR(data1);
 853         flash_version->minor =
 854             (u32) VXGE_HW_RTS_ACCESS_STEER_DATA1_GET_FLASH_VER_MINOR(data1);
 855         flash_version->build =
 856             (u32) VXGE_HW_RTS_ACCESS_STEER_DATA1_GET_FLASH_VER_BUILD(data1);
 857
 858         snprintf(flash_version->version, VXGE_HW_FW_STRLEN, "%d.%d.%d",
 859                  flash_version->major, flash_version->minor,
 860                  flash_version->build);
 861
 862 exit:
 863         return status;
 864 }
 865
 866 /*
 867  * __vxge_hw_vpath_card_info_get - Get the serial numbers,
 868  * part number and product description.
 869  */
 870 static enum vxge_hw_status
 871 __vxge_hw_vpath_card_info_get(struct __vxge_hw_virtualpath *vpath,
 872                               struct vxge_hw_device_hw_info *hw_info)
 873 {
 874         __be64 *serial_number = (void *)hw_info->serial_number;
 875         __be64 *product_desc = (void *)hw_info->product_desc;
 876         __be64 *part_number = (void *)hw_info->part_number;
 877         enum vxge_hw_status status;
 878         u64 data0, data1 = 0, steer_ctrl = 0;
 879         u32 i, j = 0;
 880
 881         data0 = VXGE_HW_RTS_ACCESS_STEER_DATA0_MEMO_ITEM_SERIAL_NUMBER;
 882
 883         status = vxge_hw_vpath_fw_api(vpath,
 884                         VXGE_HW_RTS_ACCESS_STEER_CTRL_ACTION_READ_MEMO_ENTRY,
 885                         VXGE_HW_RTS_ACCESS_STEER_CTRL_DATA_STRUCT_SEL_FW_MEMO,
 886                         0, &data0, &data1, &steer_ctrl);
 887         if (status != VXGE_HW_OK)
 888                 return status;
 889
 890         serial_number[0] = cpu_to_be64(data0);
 891         serial_number[1] = cpu_to_be64(data1);
 892
 893         data0 = VXGE_HW_RTS_ACCESS_STEER_DATA0_MEMO_ITEM_PART_NUMBER;
 894         data1 = steer_ctrl = 0;
 895
 896         status = vxge_hw_vpath_fw_api(vpath,
 897                         VXGE_HW_RTS_ACCESS_STEER_CTRL_ACTION_READ_MEMO_ENTRY,
 898                         VXGE_HW_RTS_ACCESS_STEER_CTRL_DATA_STRUCT_SEL_FW_MEMO,
 899                         0, &data0, &data1, &steer_ctrl);
 900         if (status != VXGE_HW_OK)
 901                 return status;
 902
 903         part_number[0] = cpu_to_be64(data0);
 904         part_number[1] = cpu_to_be64(data1);
 905
 906         for (i = VXGE_HW_RTS_ACCESS_STEER_DATA0_MEMO_ITEM_DESC_0;
 907              i <= VXGE_HW_RTS_ACCESS_STEER_DATA0_MEMO_ITEM_DESC_3; i++) {
 908                 data0 = i;
 909                 data1 = steer_ctrl = 0;
 910
 911                 status = vxge_hw_vpath_fw_api(vpath,
 912                         VXGE_HW_RTS_ACCESS_STEER_CTRL_ACTION_READ_MEMO_ENTRY,
 913                         VXGE_HW_RTS_ACCESS_STEER_CTRL_DATA_STRUCT_SEL_FW_MEMO,
 914                         0, &data0, &data1, &steer_ctrl);
 915                 if (status != VXGE_HW_OK)
 916                         return status;
 917
 918                 product_desc[j++] = cpu_to_be64(data0);
 919                 product_desc[j++] = cpu_to_be64(data1);
 920         }
 921
 922         return status;
 923 }
 924
 925 /*
 926  * __vxge_hw_vpath_pci_func_mode_get - Get the pci mode
 927  * Returns pci function mode
 928  */
 929 static enum vxge_hw_status
 930 __vxge_hw_vpath_pci_func_mode_get(struct __vxge_hw_virtualpath *vpath,
 931                                   struct vxge_hw_device_hw_info *hw_info)
 932 {
 933         u64 data0, data1 = 0, steer_ctrl = 0;
 934         enum vxge_hw_status status;
 935
 936         data0 = 0;
 937
 938         status = vxge_hw_vpath_fw_api(vpath,
 939                         VXGE_HW_FW_API_GET_FUNC_MODE,
 940                         VXGE_HW_RTS_ACCESS_STEER_CTRL_DATA_STRUCT_SEL_FW_MEMO,
 941                         0, &data0, &data1, &steer_ctrl);
 942         if (status != VXGE_HW_OK)
 943                 return status;
 944
 945         hw_info->function_mode = VXGE_HW_GET_FUNC_MODE_VAL(data0);
 946         return status;
 947 }
 948
 949 /*
 950  * __vxge_hw_vpath_addr_get - Get the hw address entry for this vpath
 951  *               from MAC address table.
 952  */
 953 static enum vxge_hw_status
 954 __vxge_hw_vpath_addr_get(struct __vxge_hw_virtualpath *vpath,
 955                          u8 *macaddr, u8 *macaddr_mask)
 956 {
 957         u64 action = VXGE_HW_RTS_ACCESS_STEER_CTRL_ACTION_LIST_FIRST_ENTRY,
 958             data0 = 0, data1 = 0, steer_ctrl = 0;
 959         enum vxge_hw_status status;
 960         int i;
 961
 962         do {
 963                 status = vxge_hw_vpath_fw_api(vpath, action,
 964                         VXGE_HW_RTS_ACCESS_STEER_CTRL_DATA_STRUCT_SEL_DA,
 965                         0, &data0, &data1, &steer_ctrl);
 966                 if (status != VXGE_HW_OK)
 967                         goto exit;
 968
 969                 data0 = VXGE_HW_RTS_ACCESS_STEER_DATA0_GET_DA_MAC_ADDR(data0);
 970                 data1 = VXGE_HW_RTS_ACCESS_STEER_DATA1_GET_DA_MAC_ADDR_MASK(
 971                                                                         data1);
 972
 973                 for (i = ETH_ALEN; i > 0; i--) {
 974                         macaddr[i - 1] = (u8) (data0 & 0xFF);
 975                         data0 >>= 8;
 976
 977                         macaddr_mask[i - 1] = (u8) (data1 & 0xFF);
 978                         data1 >>= 8;
 979                 }
 980
 981                 action = VXGE_HW_RTS_ACCESS_STEER_CTRL_ACTION_LIST_NEXT_ENTRY;
 982                 data0 = 0, data1 = 0, steer_ctrl = 0;
 983
 984         } while (!is_valid_ether_addr(macaddr));
 985 exit:
 986         return status;
 987 }
 988
 989 /**
 990  * vxge_hw_device_hw_info_get - Get the hw information
 991  * @bar0: the bar
 992  * @hw_info: the hw_info struct
 993  *
 994  * Returns the vpath mask that has the bits set for each vpath allocated
 995  * for the driver, FW version information, and the first mac address for
 996  * each vpath
 997  */
 998 enum vxge_hw_status
 999 vxge_hw_device_hw_info_get(void __iomem *bar0,
1000                            struct vxge_hw_device_hw_info *hw_info)
1001 {
1002         u32 i;
1003         u64 val64;
1004         struct vxge_hw_toc_reg __iomem *toc;
1005         struct vxge_hw_mrpcim_reg __iomem *mrpcim_reg;
1006         struct vxge_hw_common_reg __iomem *common_reg;
1007         struct vxge_hw_vpmgmt_reg __iomem *vpmgmt_reg;
1008         enum vxge_hw_status status;
1009         struct __vxge_hw_virtualpath vpath;
1010
1011         memset(hw_info, 0, sizeof(struct vxge_hw_device_hw_info));
1012
1013         toc = __vxge_hw_device_toc_get(bar0);
1014         if (toc == NULL) {
1015                 status = VXGE_HW_ERR_CRITICAL;
1016                 goto exit;
1017         }
1018
1019         val64 = readq(&toc->toc_common_pointer);
1020         common_reg = bar0 + val64;
1021
1022         status = __vxge_hw_device_vpath_reset_in_prog_check(
1023                 (u64 __iomem *)&common_reg->vpath_rst_in_prog);
1024         if (status != VXGE_HW_OK)
1025                 goto exit;
1026
1027         hw_info->vpath_mask = readq(&common_reg->vpath_assignments);
1028
1029         val64 = readq(&common_reg->host_type_assignments);
1030
1031         hw_info->host_type =
1032            (u32)VXGE_HW_HOST_TYPE_ASSIGNMENTS_GET_HOST_TYPE_ASSIGNMENTS(val64);
1033
1034         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
1035                 if (!((hw_info->vpath_mask) & vxge_mBIT(i)))
1036                         continue;
1037
1038                 val64 = readq(&toc->toc_vpmgmt_pointer[i]);
1039
1040                 vpmgmt_reg = bar0 + val64;
1041
1042                 hw_info->func_id = __vxge_hw_vpath_func_id_get(vpmgmt_reg);
1043                 if (__vxge_hw_device_access_rights_get(hw_info->host_type,
1044                         hw_info->func_id) &
1045                         VXGE_HW_DEVICE_ACCESS_RIGHT_MRPCIM) {
1046
1047                         val64 = readq(&toc->toc_mrpcim_pointer);
1048
1049                         mrpcim_reg = bar0 + val64;
1050
1051                         writeq(0, &mrpcim_reg->xgmac_gen_fw_memo_mask);
1052                         wmb();
1053                 }
1054
1055                 val64 = readq(&toc->toc_vpath_pointer[i]);
1056
1057                 spin_lock_init(&vpath.lock);
1058                 vpath.vp_reg = bar0 + val64;
1059                 vpath.vp_open = VXGE_HW_VP_NOT_OPEN;
1060
1061                 status = __vxge_hw_vpath_pci_func_mode_get(&vpath, hw_info);
1062                 if (status != VXGE_HW_OK)
1063                         goto exit;
1064
1065                 status = __vxge_hw_vpath_fw_ver_get(&vpath, hw_info);
1066                 if (status != VXGE_HW_OK)
1067                         goto exit;
1068
1069                 status = __vxge_hw_vpath_card_info_get(&vpath, hw_info);
1070                 if (status != VXGE_HW_OK)
1071                         goto exit;
1072
1073                 break;
1074         }
1075
1076         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
1077                 if (!((hw_info->vpath_mask) & vxge_mBIT(i)))
1078                         continue;
1079
1080                 val64 = readq(&toc->toc_vpath_pointer[i]);
1081                 vpath.vp_reg = bar0 + val64;
1082                 vpath.vp_open = VXGE_HW_VP_NOT_OPEN;
1083
1084                 status =  __vxge_hw_vpath_addr_get(&vpath,
1085                                 hw_info->mac_addrs[i],
1086                                 hw_info->mac_addr_masks[i]);
1087                 if (status != VXGE_HW_OK)
1088                         goto exit;
1089         }
1090 exit:
1091         return status;
1092 }
1093
1094 /*
1095  * __vxge_hw_blockpool_destroy - Deallocates the block pool
1096  */
1097 static void __vxge_hw_blockpool_destroy(struct __vxge_hw_blockpool *blockpool)
1098 {
1099         struct __vxge_hw_device *hldev;
1100         struct list_head *p, *n;
1101
1102         if (!blockpool)
1103                 return;
1104
1105         hldev = blockpool->hldev;
1106
1107         list_for_each_safe(p, n, &blockpool->free_block_list) {
1108                 dma_unmap_single(&hldev->pdev->dev,
1109                                  ((struct __vxge_hw_blockpool_entry *)p)->dma_addr,
1110                                  ((struct __vxge_hw_blockpool_entry *)p)->length,
1111                                  DMA_BIDIRECTIONAL);
1112
1113                 vxge_os_dma_free(hldev->pdev,
1114                         ((struct __vxge_hw_blockpool_entry *)p)->memblock,
1115                         &((struct __vxge_hw_blockpool_entry *)p)->acc_handle);
1116
1117                 list_del(&((struct __vxge_hw_blockpool_entry *)p)->item);
1118                 kfree(p);
1119                 blockpool->pool_size--;
1120         }
1121
1122         list_for_each_safe(p, n, &blockpool->free_entry_list) {
1123                 list_del(&((struct __vxge_hw_blockpool_entry *)p)->item);
1124                 kfree(p);
1125         }
1126
1127         return;
1128 }
1129
1130 /*
1131  * __vxge_hw_blockpool_create - Create block pool
1132  */
1133 static enum vxge_hw_status
1134 __vxge_hw_blockpool_create(struct __vxge_hw_device *hldev,
1135                            struct __vxge_hw_blockpool *blockpool,
1136                            u32 pool_size,
1137                            u32 pool_max)
1138 {
1139         u32 i;
1140         struct __vxge_hw_blockpool_entry *entry = NULL;
1141         void *memblock;
1142         dma_addr_t dma_addr;
1143         struct pci_dev *dma_handle;
1144         struct pci_dev *acc_handle;
1145         enum vxge_hw_status status = VXGE_HW_OK;
1146
1147         if (blockpool == NULL) {
1148                 status = VXGE_HW_FAIL;
1149                 goto blockpool_create_exit;
1150         }
1151
1152         blockpool->hldev = hldev;
1153         blockpool->block_size = VXGE_HW_BLOCK_SIZE;
1154         blockpool->pool_size = 0;
1155         blockpool->pool_max = pool_max;
1156         blockpool->req_out = 0;
1157
1158         INIT_LIST_HEAD(&blockpool->free_block_list);
1159         INIT_LIST_HEAD(&blockpool->free_entry_list);
1160
1161         for (i = 0; i < pool_size + pool_max; i++) {
1162                 entry = kzalloc(sizeof(struct __vxge_hw_blockpool_entry),
1163                                 GFP_KERNEL);
1164                 if (entry == NULL) {
1165                         __vxge_hw_blockpool_destroy(blockpool);
1166                         status = VXGE_HW_ERR_OUT_OF_MEMORY;
1167                         goto blockpool_create_exit;
1168                 }
1169                 list_add(&entry->item, &blockpool->free_entry_list);
1170         }
1171
1172         for (i = 0; i < pool_size; i++) {
1173                 memblock = vxge_os_dma_malloc(
1174                                 hldev->pdev,
1175                                 VXGE_HW_BLOCK_SIZE,
1176                                 &dma_handle,
1177                                 &acc_handle);
1178                 if (memblock == NULL) {
1179                         __vxge_hw_blockpool_destroy(blockpool);
1180                         status = VXGE_HW_ERR_OUT_OF_MEMORY;
1181                         goto blockpool_create_exit;
1182                 }
1183
1184                 dma_addr = dma_map_single(&hldev->pdev->dev, memblock,
1185                                           VXGE_HW_BLOCK_SIZE,
1186                                           DMA_BIDIRECTIONAL);
1187                 if (unlikely(dma_mapping_error(&hldev->pdev->dev, dma_addr))) {
1188                         vxge_os_dma_free(hldev->pdev, memblock, &acc_handle);
1189                         __vxge_hw_blockpool_destroy(blockpool);
1190                         status = VXGE_HW_ERR_OUT_OF_MEMORY;
1191                         goto blockpool_create_exit;
1192                 }
1193
1194                 if (!list_empty(&blockpool->free_entry_list))
1195                         entry = (struct __vxge_hw_blockpool_entry *)
1196                                 list_first_entry(&blockpool->free_entry_list,
1197                                         struct __vxge_hw_blockpool_entry,
1198                                         item);
1199
1200                 if (entry == NULL)
1201                         entry =
1202                             kzalloc(sizeof(struct __vxge_hw_blockpool_entry),
1203                                         GFP_KERNEL);
1204                 if (entry != NULL) {
1205                         list_del(&entry->item);
1206                         entry->length = VXGE_HW_BLOCK_SIZE;
1207                         entry->memblock = memblock;
1208                         entry->dma_addr = dma_addr;
1209                         entry->acc_handle = acc_handle;
1210                         entry->dma_handle = dma_handle;
1211                         list_add(&entry->item,
1212                                           &blockpool->free_block_list);
1213                         blockpool->pool_size++;
1214                 } else {
1215                         __vxge_hw_blockpool_destroy(blockpool);
1216                         status = VXGE_HW_ERR_OUT_OF_MEMORY;
1217                         goto blockpool_create_exit;
1218                 }
1219         }
1220
1221 blockpool_create_exit:
1222         return status;
1223 }
1224
1225 /*
1226  * __vxge_hw_device_fifo_config_check - Check fifo configuration.
1227  * Check the fifo configuration
1228  */
1229 static enum vxge_hw_status
1230 __vxge_hw_device_fifo_config_check(struct vxge_hw_fifo_config *fifo_config)
1231 {
1232         if ((fifo_config->fifo_blocks < VXGE_HW_MIN_FIFO_BLOCKS) ||
1233             (fifo_config->fifo_blocks > VXGE_HW_MAX_FIFO_BLOCKS))
1234                 return VXGE_HW_BADCFG_FIFO_BLOCKS;
1235
1236         return VXGE_HW_OK;
1237 }
1238
1239 /*
1240  * __vxge_hw_device_vpath_config_check - Check vpath configuration.
1241  * Check the vpath configuration
1242  */
1243 static enum vxge_hw_status
1244 __vxge_hw_device_vpath_config_check(struct vxge_hw_vp_config *vp_config)
1245 {
1246         enum vxge_hw_status status;
1247
1248         if ((vp_config->min_bandwidth < VXGE_HW_VPATH_BANDWIDTH_MIN) ||
1249             (vp_config->min_bandwidth > VXGE_HW_VPATH_BANDWIDTH_MAX))
1250                 return VXGE_HW_BADCFG_VPATH_MIN_BANDWIDTH;
1251
1252         status = __vxge_hw_device_fifo_config_check(&vp_config->fifo);
1253         if (status != VXGE_HW_OK)
1254                 return status;
1255
1256         if ((vp_config->mtu != VXGE_HW_VPATH_USE_FLASH_DEFAULT_INITIAL_MTU) &&
1257                 ((vp_config->mtu < VXGE_HW_VPATH_MIN_INITIAL_MTU) ||
1258                 (vp_config->mtu > VXGE_HW_VPATH_MAX_INITIAL_MTU)))
1259                 return VXGE_HW_BADCFG_VPATH_MTU;
1260
1261         if ((vp_config->rpa_strip_vlan_tag !=
1262                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_USE_FLASH_DEFAULT) &&
1263                 (vp_config->rpa_strip_vlan_tag !=
1264                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE) &&
1265                 (vp_config->rpa_strip_vlan_tag !=
1266                 VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_DISABLE))
1267                 return VXGE_HW_BADCFG_VPATH_RPA_STRIP_VLAN_TAG;
1268
1269         return VXGE_HW_OK;
1270 }
1271
1272 /*
1273  * __vxge_hw_device_config_check - Check device configuration.
1274  * Check the device configuration
1275  */
1276 static enum vxge_hw_status
1277 __vxge_hw_device_config_check(struct vxge_hw_device_config *new_config)
1278 {
1279         u32 i;
1280         enum vxge_hw_status status;
1281
1282         if ((new_config->intr_mode != VXGE_HW_INTR_MODE_IRQLINE) &&
1283             (new_config->intr_mode != VXGE_HW_INTR_MODE_MSIX) &&
1284             (new_config->intr_mode != VXGE_HW_INTR_MODE_MSIX_ONE_SHOT) &&
1285             (new_config->intr_mode != VXGE_HW_INTR_MODE_DEF))
1286                 return VXGE_HW_BADCFG_INTR_MODE;
1287
1288         if ((new_config->rts_mac_en != VXGE_HW_RTS_MAC_DISABLE) &&
1289             (new_config->rts_mac_en != VXGE_HW_RTS_MAC_ENABLE))
1290                 return VXGE_HW_BADCFG_RTS_MAC_EN;
1291
1292         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
1293                 status = __vxge_hw_device_vpath_config_check(
1294                                 &new_config->vp_config[i]);
1295                 if (status != VXGE_HW_OK)
1296                         return status;
1297         }
1298
1299         return VXGE_HW_OK;
1300 }
1301
1302 /*
1303  * vxge_hw_device_initialize - Initialize Titan device.
1304  * Initialize Titan device. Note that all the arguments of this public API
1305  * are 'IN', including @hldev. Driver cooperates with
1306  * OS to find new Titan device, locate its PCI and memory spaces.
1307  *
1308  * When done, the driver allocates sizeof(struct __vxge_hw_device) bytes for HW
1309  * to enable the latter to perform Titan hardware initialization.
1310  */
1311 enum vxge_hw_status
1312 vxge_hw_device_initialize(
1313         struct __vxge_hw_device **devh,
1314         struct vxge_hw_device_attr *attr,
1315         struct vxge_hw_device_config *device_config)
1316 {
1317         u32 i;
1318         u32 nblocks = 0;
1319         struct __vxge_hw_device *hldev = NULL;
1320         enum vxge_hw_status status = VXGE_HW_OK;
1321
1322         status = __vxge_hw_device_config_check(device_config);
1323         if (status != VXGE_HW_OK)
1324                 goto exit;
1325
1326         hldev = vzalloc(sizeof(struct __vxge_hw_device));
1327         if (hldev == NULL) {
1328                 status = VXGE_HW_ERR_OUT_OF_MEMORY;
1329                 goto exit;
1330         }
1331
1332         hldev->magic = VXGE_HW_DEVICE_MAGIC;
1333
1334         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_ALL);
1335
1336         /* apply config */
1337         memcpy(&hldev->config, device_config,
1338                 sizeof(struct vxge_hw_device_config));
1339
1340         hldev->bar0 = attr->bar0;
1341         hldev->pdev = attr->pdev;
1342
1343         hldev->uld_callbacks = attr->uld_callbacks;
1344
1345         __vxge_hw_device_pci_e_init(hldev);
1346
1347         status = __vxge_hw_device_reg_addr_get(hldev);
1348         if (status != VXGE_HW_OK) {
1349                 vfree(hldev);
1350                 goto exit;
1351         }
1352
1353         __vxge_hw_device_host_info_get(hldev);
1354
1355         /* Incrementing for stats blocks */
1356         nblocks++;
1357
1358         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
1359                 if (!(hldev->vpath_assignments & vxge_mBIT(i)))
1360                         continue;
1361
1362                 if (device_config->vp_config[i].ring.enable ==
1363                         VXGE_HW_RING_ENABLE)
1364                         nblocks += device_config->vp_config[i].ring.ring_blocks;
1365
1366                 if (device_config->vp_config[i].fifo.enable ==
1367                         VXGE_HW_FIFO_ENABLE)
1368                         nblocks += device_config->vp_config[i].fifo.fifo_blocks;
1369                 nblocks++;
1370         }
1371
1372         if (__vxge_hw_blockpool_create(hldev,
1373                 &hldev->block_pool,
1374                 device_config->dma_blockpool_initial + nblocks,
1375                 device_config->dma_blockpool_max + nblocks) != VXGE_HW_OK) {
1376
1377                 vxge_hw_device_terminate(hldev);
1378                 status = VXGE_HW_ERR_OUT_OF_MEMORY;
1379                 goto exit;
1380         }
1381
1382         status = __vxge_hw_device_initialize(hldev);
1383         if (status != VXGE_HW_OK) {
1384                 vxge_hw_device_terminate(hldev);
1385                 goto exit;
1386         }
1387
1388         *devh = hldev;
1389 exit:
1390         return status;
1391 }
1392
1393 /*
1394  * vxge_hw_device_terminate - Terminate Titan device.
1395  * Terminate HW device.
1396  */
1397 void
1398 vxge_hw_device_terminate(struct __vxge_hw_device *hldev)
1399 {
1400         vxge_assert(hldev->magic == VXGE_HW_DEVICE_MAGIC);
1401
1402         hldev->magic = VXGE_HW_DEVICE_DEAD;
1403         __vxge_hw_blockpool_destroy(&hldev->block_pool);
1404         vfree(hldev);
1405 }
1406
1407 /*
1408  * __vxge_hw_vpath_stats_access - Get the statistics from the given location
1409  *                           and offset and perform an operation
1410  */
1411 static enum vxge_hw_status
1412 __vxge_hw_vpath_stats_access(struct __vxge_hw_virtualpath *vpath,
1413                              u32 operation, u32 offset, u64 *stat)
1414 {
1415         u64 val64;
1416         enum vxge_hw_status status = VXGE_HW_OK;
1417         struct vxge_hw_vpath_reg __iomem *vp_reg;
1418
1419         if (vpath->vp_open == VXGE_HW_VP_NOT_OPEN) {
1420                 status = VXGE_HW_ERR_VPATH_NOT_OPEN;
1421                 goto vpath_stats_access_exit;
1422         }
1423
1424         vp_reg = vpath->vp_reg;
1425
1426         val64 =  VXGE_HW_XMAC_STATS_ACCESS_CMD_OP(operation) |
1427                  VXGE_HW_XMAC_STATS_ACCESS_CMD_STROBE |
1428                  VXGE_HW_XMAC_STATS_ACCESS_CMD_OFFSET_SEL(offset);
1429
1430         status = __vxge_hw_pio_mem_write64(val64,
1431                                 &vp_reg->xmac_stats_access_cmd,
1432                                 VXGE_HW_XMAC_STATS_ACCESS_CMD_STROBE,
1433                                 vpath->hldev->config.device_poll_millis);
1434         if ((status == VXGE_HW_OK) && (operation == VXGE_HW_STATS_OP_READ))
1435                 *stat = readq(&vp_reg->xmac_stats_access_data);
1436         else
1437                 *stat = 0;
1438
1439 vpath_stats_access_exit:
1440         return status;
1441 }
1442
1443 /*
1444  * __vxge_hw_vpath_xmac_tx_stats_get - Get the TX Statistics of a vpath
1445  */
1446 static enum vxge_hw_status
1447 __vxge_hw_vpath_xmac_tx_stats_get(struct __vxge_hw_virtualpath *vpath,
1448                         struct vxge_hw_xmac_vpath_tx_stats *vpath_tx_stats)
1449 {
1450         u64 *val64;
1451         int i;
1452         u32 offset = VXGE_HW_STATS_VPATH_TX_OFFSET;
1453         enum vxge_hw_status status = VXGE_HW_OK;
1454
1455         val64 = (u64 *)vpath_tx_stats;
1456
1457         if (vpath->vp_open == VXGE_HW_VP_NOT_OPEN) {
1458                 status = VXGE_HW_ERR_VPATH_NOT_OPEN;
1459                 goto exit;
1460         }
1461
1462         for (i = 0; i < sizeof(struct vxge_hw_xmac_vpath_tx_stats) / 8; i++) {
1463                 status = __vxge_hw_vpath_stats_access(vpath,
1464                                         VXGE_HW_STATS_OP_READ,
1465                                         offset, val64);
1466                 if (status != VXGE_HW_OK)
1467                         goto exit;
1468                 offset++;
1469                 val64++;
1470         }
1471 exit:
1472         return status;
1473 }
1474
1475 /*
1476  * __vxge_hw_vpath_xmac_rx_stats_get - Get the RX Statistics of a vpath
1477  */
1478 static enum vxge_hw_status
1479 __vxge_hw_vpath_xmac_rx_stats_get(struct __vxge_hw_virtualpath *vpath,
1480                         struct vxge_hw_xmac_vpath_rx_stats *vpath_rx_stats)
1481 {
1482         u64 *val64;
1483         enum vxge_hw_status status = VXGE_HW_OK;
1484         int i;
1485         u32 offset = VXGE_HW_STATS_VPATH_RX_OFFSET;
1486         val64 = (u64 *) vpath_rx_stats;
1487
1488         if (vpath->vp_open == VXGE_HW_VP_NOT_OPEN) {
1489                 status = VXGE_HW_ERR_VPATH_NOT_OPEN;
1490                 goto exit;
1491         }
1492         for (i = 0; i < sizeof(struct vxge_hw_xmac_vpath_rx_stats) / 8; i++) {
1493                 status = __vxge_hw_vpath_stats_access(vpath,
1494                                         VXGE_HW_STATS_OP_READ,
1495                                         offset >> 3, val64);
1496                 if (status != VXGE_HW_OK)
1497                         goto exit;
1498
1499                 offset += 8;
1500                 val64++;
1501         }
1502 exit:
1503         return status;
1504 }
1505
1506 /*
1507  * __vxge_hw_vpath_stats_get - Get the vpath hw statistics.
1508  */
1509 static enum vxge_hw_status
1510 __vxge_hw_vpath_stats_get(struct __vxge_hw_virtualpath *vpath,
1511                           struct vxge_hw_vpath_stats_hw_info *hw_stats)
1512 {
1513         u64 val64;
1514         enum vxge_hw_status status = VXGE_HW_OK;
1515         struct vxge_hw_vpath_reg __iomem *vp_reg;
1516
1517         if (vpath->vp_open == VXGE_HW_VP_NOT_OPEN) {
1518                 status = VXGE_HW_ERR_VPATH_NOT_OPEN;
1519                 goto exit;
1520         }
1521         vp_reg = vpath->vp_reg;
1522
1523         val64 = readq(&vp_reg->vpath_debug_stats0);
1524         hw_stats->ini_num_mwr_sent =
1525                 (u32)VXGE_HW_VPATH_DEBUG_STATS0_GET_INI_NUM_MWR_SENT(val64);
1526
1527         val64 = readq(&vp_reg->vpath_debug_stats1);
1528         hw_stats->ini_num_mrd_sent =
1529                 (u32)VXGE_HW_VPATH_DEBUG_STATS1_GET_INI_NUM_MRD_SENT(val64);
1530
1531         val64 = readq(&vp_reg->vpath_debug_stats2);
1532         hw_stats->ini_num_cpl_rcvd =
1533                 (u32)VXGE_HW_VPATH_DEBUG_STATS2_GET_INI_NUM_CPL_RCVD(val64);
1534
1535         val64 = readq(&vp_reg->vpath_debug_stats3);
1536         hw_stats->ini_num_mwr_byte_sent =
1537                 VXGE_HW_VPATH_DEBUG_STATS3_GET_INI_NUM_MWR_BYTE_SENT(val64);
1538
1539         val64 = readq(&vp_reg->vpath_debug_stats4);
1540         hw_stats->ini_num_cpl_byte_rcvd =
1541                 VXGE_HW_VPATH_DEBUG_STATS4_GET_INI_NUM_CPL_BYTE_RCVD(val64);
1542
1543         val64 = readq(&vp_reg->vpath_debug_stats5);
1544         hw_stats->wrcrdtarb_xoff =
1545                 (u32)VXGE_HW_VPATH_DEBUG_STATS5_GET_WRCRDTARB_XOFF(val64);
1546
1547         val64 = readq(&vp_reg->vpath_debug_stats6);
1548         hw_stats->rdcrdtarb_xoff =
1549                 (u32)VXGE_HW_VPATH_DEBUG_STATS6_GET_RDCRDTARB_XOFF(val64);
1550
1551         val64 = readq(&vp_reg->vpath_genstats_count01);
1552         hw_stats->vpath_genstats_count0 =
1553         (u32)VXGE_HW_VPATH_GENSTATS_COUNT01_GET_PPIF_VPATH_GENSTATS_COUNT0(
1554                 val64);
1555
1556         val64 = readq(&vp_reg->vpath_genstats_count01);
1557         hw_stats->vpath_genstats_count1 =
1558         (u32)VXGE_HW_VPATH_GENSTATS_COUNT01_GET_PPIF_VPATH_GENSTATS_COUNT1(
1559                 val64);
1560
1561         val64 = readq(&vp_reg->vpath_genstats_count23);
1562         hw_stats->vpath_genstats_count2 =
1563         (u32)VXGE_HW_VPATH_GENSTATS_COUNT23_GET_PPIF_VPATH_GENSTATS_COUNT2(
1564                 val64);
1565
1566         val64 = readq(&vp_reg->vpath_genstats_count01);
1567         hw_stats->vpath_genstats_count3 =
1568         (u32)VXGE_HW_VPATH_GENSTATS_COUNT23_GET_PPIF_VPATH_GENSTATS_COUNT3(
1569                 val64);
1570
1571         val64 = readq(&vp_reg->vpath_genstats_count4);
1572         hw_stats->vpath_genstats_count4 =
1573         (u32)VXGE_HW_VPATH_GENSTATS_COUNT4_GET_PPIF_VPATH_GENSTATS_COUNT4(
1574                 val64);
1575
1576         val64 = readq(&vp_reg->vpath_genstats_count5);
1577         hw_stats->vpath_genstats_count5 =
1578         (u32)VXGE_HW_VPATH_GENSTATS_COUNT5_GET_PPIF_VPATH_GENSTATS_COUNT5(
1579                 val64);
1580
1581         status = __vxge_hw_vpath_xmac_tx_stats_get(vpath, &hw_stats->tx_stats);
1582         if (status != VXGE_HW_OK)
1583                 goto exit;
1584
1585         status = __vxge_hw_vpath_xmac_rx_stats_get(vpath, &hw_stats->rx_stats);
1586         if (status != VXGE_HW_OK)
1587                 goto exit;
1588
1589         VXGE_HW_VPATH_STATS_PIO_READ(
1590                 VXGE_HW_STATS_VPATH_PROG_EVENT_VNUM0_OFFSET);
1591
1592         hw_stats->prog_event_vnum0 =
1593                         (u32)VXGE_HW_STATS_GET_VPATH_PROG_EVENT_VNUM0(val64);
1594
1595         hw_stats->prog_event_vnum1 =
1596                         (u32)VXGE_HW_STATS_GET_VPATH_PROG_EVENT_VNUM1(val64);
1597
1598         VXGE_HW_VPATH_STATS_PIO_READ(
1599                 VXGE_HW_STATS_VPATH_PROG_EVENT_VNUM2_OFFSET);
1600
1601         hw_stats->prog_event_vnum2 =
1602                         (u32)VXGE_HW_STATS_GET_VPATH_PROG_EVENT_VNUM2(val64);
1603
1604         hw_stats->prog_event_vnum3 =
1605                         (u32)VXGE_HW_STATS_GET_VPATH_PROG_EVENT_VNUM3(val64);
1606
1607         val64 = readq(&vp_reg->rx_multi_cast_stats);
1608         hw_stats->rx_multi_cast_frame_discard =
1609                 (u16)VXGE_HW_RX_MULTI_CAST_STATS_GET_FRAME_DISCARD(val64);
1610
1611         val64 = readq(&vp_reg->rx_frm_transferred);
1612         hw_stats->rx_frm_transferred =
1613                 (u32)VXGE_HW_RX_FRM_TRANSFERRED_GET_RX_FRM_TRANSFERRED(val64);
1614
1615         val64 = readq(&vp_reg->rxd_returned);
1616         hw_stats->rxd_returned =
1617                 (u16)VXGE_HW_RXD_RETURNED_GET_RXD_RETURNED(val64);
1618
1619         val64 = readq(&vp_reg->dbg_stats_rx_mpa);
1620         hw_stats->rx_mpa_len_fail_frms =
1621                 (u16)VXGE_HW_DBG_STATS_GET_RX_MPA_LEN_FAIL_FRMS(val64);
1622         hw_stats->rx_mpa_mrk_fail_frms =
1623                 (u16)VXGE_HW_DBG_STATS_GET_RX_MPA_MRK_FAIL_FRMS(val64);
1624         hw_stats->rx_mpa_crc_fail_frms =
1625                 (u16)VXGE_HW_DBG_STATS_GET_RX_MPA_CRC_FAIL_FRMS(val64);
1626
1627         val64 = readq(&vp_reg->dbg_stats_rx_fau);
1628         hw_stats->rx_permitted_frms =
1629                 (u16)VXGE_HW_DBG_STATS_GET_RX_FAU_RX_PERMITTED_FRMS(val64);
1630         hw_stats->rx_vp_reset_discarded_frms =
1631         (u16)VXGE_HW_DBG_STATS_GET_RX_FAU_RX_VP_RESET_DISCARDED_FRMS(val64);
1632         hw_stats->rx_wol_frms =
1633                 (u16)VXGE_HW_DBG_STATS_GET_RX_FAU_RX_WOL_FRMS(val64);
1634
1635         val64 = readq(&vp_reg->tx_vp_reset_discarded_frms);
1636         hw_stats->tx_vp_reset_discarded_frms =
1637         (u16)VXGE_HW_TX_VP_RESET_DISCARDED_FRMS_GET_TX_VP_RESET_DISCARDED_FRMS(
1638                 val64);
1639 exit:
1640         return status;
1641 }
1642
1643 /*
1644  * vxge_hw_device_stats_get - Get the device hw statistics.
1645  * Returns the vpath h/w stats for the device.
1646  */
1647 enum vxge_hw_status
1648 vxge_hw_device_stats_get(struct __vxge_hw_device *hldev,
1649                         struct vxge_hw_device_stats_hw_info *hw_stats)
1650 {
1651         u32 i;
1652         enum vxge_hw_status status = VXGE_HW_OK;
1653
1654         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
1655                 if (!(hldev->vpaths_deployed & vxge_mBIT(i)) ||
1656                         (hldev->virtual_paths[i].vp_open ==
1657                                 VXGE_HW_VP_NOT_OPEN))
1658                         continue;
1659
1660                 memcpy(hldev->virtual_paths[i].hw_stats_sav,
1661                                 hldev->virtual_paths[i].hw_stats,
1662                                 sizeof(struct vxge_hw_vpath_stats_hw_info));
1663
1664                 status = __vxge_hw_vpath_stats_get(
1665                         &hldev->virtual_paths[i],
1666                         hldev->virtual_paths[i].hw_stats);
1667         }
1668
1669         memcpy(hw_stats, &hldev->stats.hw_dev_info_stats,
1670                         sizeof(struct vxge_hw_device_stats_hw_info));
1671
1672         return status;
1673 }
1674
1675 /*
1676  * vxge_hw_driver_stats_get - Get the device sw statistics.
1677  * Returns the vpath s/w stats for the device.
1678  */
1679 enum vxge_hw_status vxge_hw_driver_stats_get(
1680                         struct __vxge_hw_device *hldev,
1681                         struct vxge_hw_device_stats_sw_info *sw_stats)
1682 {
1683         memcpy(sw_stats, &hldev->stats.sw_dev_info_stats,
1684                 sizeof(struct vxge_hw_device_stats_sw_info));
1685
1686         return VXGE_HW_OK;
1687 }
1688
1689 /*
1690  * vxge_hw_mrpcim_stats_access - Access the statistics from the given location
1691  *                           and offset and perform an operation
1692  * Get the statistics from the given location and offset.
1693  */
1694 enum vxge_hw_status
1695 vxge_hw_mrpcim_stats_access(struct __vxge_hw_device *hldev,
1696                             u32 operation, u32 location, u32 offset, u64 *stat)
1697 {
1698         u64 val64;
1699         enum vxge_hw_status status = VXGE_HW_OK;
1700
1701         status = __vxge_hw_device_is_privilaged(hldev->host_type,
1702                         hldev->func_id);
1703         if (status != VXGE_HW_OK)
1704                 goto exit;
1705
1706         val64 = VXGE_HW_XMAC_STATS_SYS_CMD_OP(operation) |
1707                 VXGE_HW_XMAC_STATS_SYS_CMD_STROBE |
1708                 VXGE_HW_XMAC_STATS_SYS_CMD_LOC_SEL(location) |
1709                 VXGE_HW_XMAC_STATS_SYS_CMD_OFFSET_SEL(offset);
1710
1711         status = __vxge_hw_pio_mem_write64(val64,
1712                                 &hldev->mrpcim_reg->xmac_stats_sys_cmd,
1713                                 VXGE_HW_XMAC_STATS_SYS_CMD_STROBE,
1714                                 hldev->config.device_poll_millis);
1715
1716         if ((status == VXGE_HW_OK) && (operation == VXGE_HW_STATS_OP_READ))
1717                 *stat = readq(&hldev->mrpcim_reg->xmac_stats_sys_data);
1718         else
1719                 *stat = 0;
1720 exit:
1721         return status;
1722 }
1723
1724 /*
1725  * vxge_hw_device_xmac_aggr_stats_get - Get the Statistics on aggregate port
1726  * Get the Statistics on aggregate port
1727  */
1728 static enum vxge_hw_status
1729 vxge_hw_device_xmac_aggr_stats_get(struct __vxge_hw_device *hldev, u32 port,
1730                                    struct vxge_hw_xmac_aggr_stats *aggr_stats)
1731 {
1732         u64 *val64;
1733         int i;
1734         u32 offset = VXGE_HW_STATS_AGGRn_OFFSET;
1735         enum vxge_hw_status status = VXGE_HW_OK;
1736
1737         val64 = (u64 *)aggr_stats;
1738
1739         status = __vxge_hw_device_is_privilaged(hldev->host_type,
1740                         hldev->func_id);
1741         if (status != VXGE_HW_OK)
1742                 goto exit;
1743
1744         for (i = 0; i < sizeof(struct vxge_hw_xmac_aggr_stats) / 8; i++) {
1745                 status = vxge_hw_mrpcim_stats_access(hldev,
1746                                         VXGE_HW_STATS_OP_READ,
1747                                         VXGE_HW_STATS_LOC_AGGR,
1748                                         ((offset + (104 * port)) >> 3), val64);
1749                 if (status != VXGE_HW_OK)
1750                         goto exit;
1751
1752                 offset += 8;
1753                 val64++;
1754         }
1755 exit:
1756         return status;
1757 }
1758
1759 /*
1760  * vxge_hw_device_xmac_port_stats_get - Get the Statistics on a port
1761  * Get the Statistics on port
1762  */
1763 static enum vxge_hw_status
1764 vxge_hw_device_xmac_port_stats_get(struct __vxge_hw_device *hldev, u32 port,
1765                                    struct vxge_hw_xmac_port_stats *port_stats)
1766 {
1767         u64 *val64;
1768         enum vxge_hw_status status = VXGE_HW_OK;
1769         int i;
1770         u32 offset = 0x0;
1771         val64 = (u64 *) port_stats;
1772
1773         status = __vxge_hw_device_is_privilaged(hldev->host_type,
1774                         hldev->func_id);
1775         if (status != VXGE_HW_OK)
1776                 goto exit;
1777
1778         for (i = 0; i < sizeof(struct vxge_hw_xmac_port_stats) / 8; i++) {
1779                 status = vxge_hw_mrpcim_stats_access(hldev,
1780                                         VXGE_HW_STATS_OP_READ,
1781                                         VXGE_HW_STATS_LOC_AGGR,
1782                                         ((offset + (608 * port)) >> 3), val64);
1783                 if (status != VXGE_HW_OK)
1784                         goto exit;
1785
1786                 offset += 8;
1787                 val64++;
1788         }
1789
1790 exit:
1791         return status;
1792 }
1793
1794 /*
1795  * vxge_hw_device_xmac_stats_get - Get the XMAC Statistics
1796  * Get the XMAC Statistics
1797  */
1798 enum vxge_hw_status
1799 vxge_hw_device_xmac_stats_get(struct __vxge_hw_device *hldev,
1800                               struct vxge_hw_xmac_stats *xmac_stats)
1801 {
1802         enum vxge_hw_status status = VXGE_HW_OK;
1803         u32 i;
1804
1805         status = vxge_hw_device_xmac_aggr_stats_get(hldev,
1806                                         0, &xmac_stats->aggr_stats[0]);
1807         if (status != VXGE_HW_OK)
1808                 goto exit;
1809
1810         status = vxge_hw_device_xmac_aggr_stats_get(hldev,
1811                                 1, &xmac_stats->aggr_stats[1]);
1812         if (status != VXGE_HW_OK)
1813                 goto exit;
1814
1815         for (i = 0; i <= VXGE_HW_MAC_MAX_MAC_PORT_ID; i++) {
1816
1817                 status = vxge_hw_device_xmac_port_stats_get(hldev,
1818                                         i, &xmac_stats->port_stats[i]);
1819                 if (status != VXGE_HW_OK)
1820                         goto exit;
1821         }
1822
1823         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
1824
1825                 if (!(hldev->vpaths_deployed & vxge_mBIT(i)))
1826                         continue;
1827
1828                 status = __vxge_hw_vpath_xmac_tx_stats_get(
1829                                         &hldev->virtual_paths[i],
1830                                         &xmac_stats->vpath_tx_stats[i]);
1831                 if (status != VXGE_HW_OK)
1832                         goto exit;
1833
1834                 status = __vxge_hw_vpath_xmac_rx_stats_get(
1835                                         &hldev->virtual_paths[i],
1836                                         &xmac_stats->vpath_rx_stats[i]);
1837                 if (status != VXGE_HW_OK)
1838                         goto exit;
1839         }
1840 exit:
1841         return status;
1842 }
1843
1844 /*
1845  * vxge_hw_device_debug_set - Set the debug module, level and timestamp
1846  * This routine is used to dynamically change the debug output
1847  */
1848 void vxge_hw_device_debug_set(struct __vxge_hw_device *hldev,
1849                               enum vxge_debug_level level, u32 mask)
1850 {
1851         if (hldev == NULL)
1852                 return;
1853
1854 #if defined(VXGE_DEBUG_TRACE_MASK) || \
1855         defined(VXGE_DEBUG_ERR_MASK)
1856         hldev->debug_module_mask = mask;
1857         hldev->debug_level = level;
1858 #endif
1859
1860 #if defined(VXGE_DEBUG_ERR_MASK)
1861         hldev->level_err = level & VXGE_ERR;
1862 #endif
1863
1864 #if defined(VXGE_DEBUG_TRACE_MASK)
1865         hldev->level_trace = level & VXGE_TRACE;
1866 #endif
1867 }
1868
1869 /*
1870  * vxge_hw_device_error_level_get - Get the error level
1871  * This routine returns the current error level set
1872  */
1873 u32 vxge_hw_device_error_level_get(struct __vxge_hw_device *hldev)
1874 {
1875 #if defined(VXGE_DEBUG_ERR_MASK)
1876         if (hldev == NULL)
1877                 return VXGE_ERR;
1878         else
1879                 return hldev->level_err;
1880 #else
1881         return 0;
1882 #endif
1883 }
1884
1885 /*
1886  * vxge_hw_device_trace_level_get - Get the trace level
1887  * This routine returns the current trace level set
1888  */
1889 u32 vxge_hw_device_trace_level_get(struct __vxge_hw_device *hldev)
1890 {
1891 #if defined(VXGE_DEBUG_TRACE_MASK)
1892         if (hldev == NULL)
1893                 return VXGE_TRACE;
1894         else
1895                 return hldev->level_trace;
1896 #else
1897         return 0;
1898 #endif
1899 }
1900
1901 /*
1902  * vxge_hw_getpause_data -Pause frame frame generation and reception.
1903  * Returns the Pause frame generation and reception capability of the NIC.
1904  */
1905 enum vxge_hw_status vxge_hw_device_getpause_data(struct __vxge_hw_device *hldev,
1906                                                  u32 port, u32 *tx, u32 *rx)
1907 {
1908         u64 val64;
1909         enum vxge_hw_status status = VXGE_HW_OK;
1910
1911         if ((hldev == NULL) || (hldev->magic != VXGE_HW_DEVICE_MAGIC)) {
1912                 status = VXGE_HW_ERR_INVALID_DEVICE;
1913                 goto exit;
1914         }
1915
1916         if (port > VXGE_HW_MAC_MAX_MAC_PORT_ID) {
1917                 status = VXGE_HW_ERR_INVALID_PORT;
1918                 goto exit;
1919         }
1920
1921         if (!(hldev->access_rights & VXGE_HW_DEVICE_ACCESS_RIGHT_MRPCIM)) {
1922                 status = VXGE_HW_ERR_PRIVILEGED_OPERATION;
1923                 goto exit;
1924         }
1925
1926         val64 = readq(&hldev->mrpcim_reg->rxmac_pause_cfg_port[port]);
1927         if (val64 & VXGE_HW_RXMAC_PAUSE_CFG_PORT_GEN_EN)
1928                 *tx = 1;
1929         if (val64 & VXGE_HW_RXMAC_PAUSE_CFG_PORT_RCV_EN)
1930                 *rx = 1;
1931 exit:
1932         return status;
1933 }
1934
1935 /*
1936  * vxge_hw_device_setpause_data -  set/reset pause frame generation.
1937  * It can be used to set or reset Pause frame generation or reception
1938  * support of the NIC.
1939  */
1940 enum vxge_hw_status vxge_hw_device_setpause_data(struct __vxge_hw_device *hldev,
1941                                                  u32 port, u32 tx, u32 rx)
1942 {
1943         u64 val64;
1944         enum vxge_hw_status status = VXGE_HW_OK;
1945
1946         if ((hldev == NULL) || (hldev->magic != VXGE_HW_DEVICE_MAGIC)) {
1947                 status = VXGE_HW_ERR_INVALID_DEVICE;
1948                 goto exit;
1949         }
1950
1951         if (port > VXGE_HW_MAC_MAX_MAC_PORT_ID) {
1952                 status = VXGE_HW_ERR_INVALID_PORT;
1953                 goto exit;
1954         }
1955
1956         status = __vxge_hw_device_is_privilaged(hldev->host_type,
1957                         hldev->func_id);
1958         if (status != VXGE_HW_OK)
1959                 goto exit;
1960
1961         val64 = readq(&hldev->mrpcim_reg->rxmac_pause_cfg_port[port]);
1962         if (tx)
1963                 val64 |= VXGE_HW_RXMAC_PAUSE_CFG_PORT_GEN_EN;
1964         else
1965                 val64 &= ~VXGE_HW_RXMAC_PAUSE_CFG_PORT_GEN_EN;
1966         if (rx)
1967                 val64 |= VXGE_HW_RXMAC_PAUSE_CFG_PORT_RCV_EN;
1968         else
1969                 val64 &= ~VXGE_HW_RXMAC_PAUSE_CFG_PORT_RCV_EN;
1970
1971         writeq(val64, &hldev->mrpcim_reg->rxmac_pause_cfg_port[port]);
1972 exit:
1973         return status;
1974 }
1975
1976 u16 vxge_hw_device_link_width_get(struct __vxge_hw_device *hldev)
1977 {
1978         struct pci_dev *dev = hldev->pdev;
1979         u16 lnk;
1980
1981         pcie_capability_read_word(dev, PCI_EXP_LNKSTA, &lnk);
1982         return (lnk & VXGE_HW_PCI_EXP_LNKCAP_LNK_WIDTH) >> 4;
1983 }
1984
1985 /*
1986  * __vxge_hw_ring_block_memblock_idx - Return the memblock index
1987  * This function returns the index of memory block
1988  */
1989 static inline u32
1990 __vxge_hw_ring_block_memblock_idx(u8 *block)
1991 {
1992         return (u32)*((u64 *)(block + VXGE_HW_RING_MEMBLOCK_IDX_OFFSET));
1993 }
1994
1995 /*
1996  * __vxge_hw_ring_block_memblock_idx_set - Sets the memblock index
1997  * This function sets index to a memory block
1998  */
1999 static inline void
2000 __vxge_hw_ring_block_memblock_idx_set(u8 *block, u32 memblock_idx)
2001 {
2002         *((u64 *)(block + VXGE_HW_RING_MEMBLOCK_IDX_OFFSET)) = memblock_idx;
2003 }
2004
2005 /*
2006  * __vxge_hw_ring_block_next_pointer_set - Sets the next block pointer
2007  * in RxD block
2008  * Sets the next block pointer in RxD block
2009  */
2010 static inline void
2011 __vxge_hw_ring_block_next_pointer_set(u8 *block, dma_addr_t dma_next)
2012 {
2013         *((u64 *)(block + VXGE_HW_RING_NEXT_BLOCK_POINTER_OFFSET)) = dma_next;
2014 }
2015
2016 /*
2017  * __vxge_hw_ring_first_block_address_get - Returns the dma address of the
2018  *             first block
2019  * Returns the dma address of the first RxD block
2020  */
2021 static u64 __vxge_hw_ring_first_block_address_get(struct __vxge_hw_ring *ring)
2022 {
2023         struct vxge_hw_mempool_dma *dma_object;
2024
2025         dma_object = ring->mempool->memblocks_dma_arr;
2026         vxge_assert(dma_object != NULL);
2027
2028         return dma_object->addr;
2029 }
2030
2031 /*
2032  * __vxge_hw_ring_item_dma_addr - Return the dma address of an item
2033  * This function returns the dma address of a given item
2034  */
2035 static dma_addr_t __vxge_hw_ring_item_dma_addr(struct vxge_hw_mempool *mempoolh,
2036                                                void *item)
2037 {
2038         u32 memblock_idx;
2039         void *memblock;
2040         struct vxge_hw_mempool_dma *memblock_dma_object;
2041         ptrdiff_t dma_item_offset;
2042
2043         /* get owner memblock index */
2044         memblock_idx = __vxge_hw_ring_block_memblock_idx(item);
2045
2046         /* get owner memblock by memblock index */
2047         memblock = mempoolh->memblocks_arr[memblock_idx];
2048
2049         /* get memblock DMA object by memblock index */
2050         memblock_dma_object = mempoolh->memblocks_dma_arr + memblock_idx;
2051
2052         /* calculate offset in the memblock of this item */
2053         dma_item_offset = (u8 *)item - (u8 *)memblock;
2054
2055         return memblock_dma_object->addr + dma_item_offset;
2056 }
2057
2058 /*
2059  * __vxge_hw_ring_rxdblock_link - Link the RxD blocks
2060  * This function returns the dma address of a given item
2061  */
2062 static void __vxge_hw_ring_rxdblock_link(struct vxge_hw_mempool *mempoolh,
2063                                          struct __vxge_hw_ring *ring, u32 from,
2064                                          u32 to)
2065 {
2066         u8 *to_item , *from_item;
2067         dma_addr_t to_dma;
2068
2069         /* get "from" RxD block */
2070         from_item = mempoolh->items_arr[from];
2071         vxge_assert(from_item);
2072
2073         /* get "to" RxD block */
2074         to_item = mempoolh->items_arr[to];
2075         vxge_assert(to_item);
2076
2077         /* return address of the beginning of previous RxD block */
2078         to_dma = __vxge_hw_ring_item_dma_addr(mempoolh, to_item);
2079
2080         /* set next pointer for this RxD block to point on
2081          * previous item's DMA start address */
2082         __vxge_hw_ring_block_next_pointer_set(from_item, to_dma);
2083 }
2084
2085 /*
2086  * __vxge_hw_ring_mempool_item_alloc - Allocate List blocks for RxD
2087  * block callback
2088  * This function is callback passed to __vxge_hw_mempool_create to create memory
2089  * pool for RxD block
2090  */
2091 static void
2092 __vxge_hw_ring_mempool_item_alloc(struct vxge_hw_mempool *mempoolh,
2093                                   u32 memblock_index,
2094                                   struct vxge_hw_mempool_dma *dma_object,
2095                                   u32 index, u32 is_last)
2096 {
2097         u32 i;
2098         void *item = mempoolh->items_arr[index];
2099         struct __vxge_hw_ring *ring =
2100                 (struct __vxge_hw_ring *)mempoolh->userdata;
2101
2102         /* format rxds array */
2103         for (i = 0; i < ring->rxds_per_block; i++) {
2104                 void *rxdblock_priv;
2105                 void *uld_priv;
2106                 struct vxge_hw_ring_rxd_1 *rxdp;
2107
2108                 u32 reserve_index = ring->channel.reserve_ptr -
2109                                 (index * ring->rxds_per_block + i + 1);
2110                 u32 memblock_item_idx;
2111
2112                 ring->channel.reserve_arr[reserve_index] = ((u8 *)item) +
2113                                                 i * ring->rxd_size;
2114
2115                 /* Note: memblock_item_idx is index of the item within
2116                  *       the memblock. For instance, in case of three RxD-blocks
2117                  *       per memblock this value can be 0, 1 or 2. */
2118                 rxdblock_priv = __vxge_hw_mempool_item_priv(mempoolh,
2119                                         memblock_index, item,
2120                                         &memblock_item_idx);
2121
2122                 rxdp = ring->channel.reserve_arr[reserve_index];
2123
2124                 uld_priv = ((u8 *)rxdblock_priv + ring->rxd_priv_size * i);
2125
2126                 /* pre-format Host_Control */
2127                 rxdp->host_control = (u64)(size_t)uld_priv;
2128         }
2129
2130         __vxge_hw_ring_block_memblock_idx_set(item, memblock_index);
2131
2132         if (is_last) {
2133                 /* link last one with first one */
2134                 __vxge_hw_ring_rxdblock_link(mempoolh, ring, index, 0);
2135         }
2136
2137         if (index > 0) {
2138                 /* link this RxD block with previous one */
2139                 __vxge_hw_ring_rxdblock_link(mempoolh, ring, index - 1, index);
2140         }
2141 }
2142
2143 /*
2144  * __vxge_hw_ring_replenish - Initial replenish of RxDs
2145  * This function replenishes the RxDs from reserve array to work array
2146  */
2147 static enum vxge_hw_status
2148 vxge_hw_ring_replenish(struct __vxge_hw_ring *ring)
2149 {
2150         void *rxd;
2151         struct __vxge_hw_channel *channel;
2152         enum vxge_hw_status status = VXGE_HW_OK;
2153
2154         channel = &ring->channel;
2155
2156         while (vxge_hw_channel_dtr_count(channel) > 0) {
2157
2158                 status = vxge_hw_ring_rxd_reserve(ring, &rxd);
2159
2160                 vxge_assert(status == VXGE_HW_OK);
2161
2162                 if (ring->rxd_init) {
2163                         status = ring->rxd_init(rxd, channel->userdata);
2164                         if (status != VXGE_HW_OK) {
2165                                 vxge_hw_ring_rxd_free(ring, rxd);
2166                                 goto exit;
2167                         }
2168                 }
2169
2170                 vxge_hw_ring_rxd_post(ring, rxd);
2171         }
2172         status = VXGE_HW_OK;
2173 exit:
2174         return status;
2175 }
2176
2177 /*
2178  * __vxge_hw_channel_allocate - Allocate memory for channel
2179  * This function allocates required memory for the channel and various arrays
2180  * in the channel
2181  */
2182 static struct __vxge_hw_channel *
2183 __vxge_hw_channel_allocate(struct __vxge_hw_vpath_handle *vph,
2184                            enum __vxge_hw_channel_type type,
2185                            u32 length, u32 per_dtr_space,
2186                            void *userdata)
2187 {
2188         struct __vxge_hw_channel *channel;
2189         struct __vxge_hw_device *hldev;
2190         int size = 0;
2191         u32 vp_id;
2192
2193         hldev = vph->vpath->hldev;
2194         vp_id = vph->vpath->vp_id;
2195
2196         switch (type) {
2197         case VXGE_HW_CHANNEL_TYPE_FIFO:
2198                 size = sizeof(struct __vxge_hw_fifo);
2199                 break;
2200         case VXGE_HW_CHANNEL_TYPE_RING:
2201                 size = sizeof(struct __vxge_hw_ring);
2202                 break;
2203         default:
2204                 break;
2205         }
2206
2207         channel = kzalloc(size, GFP_KERNEL);
2208         if (channel == NULL)
2209                 goto exit0;
2210         INIT_LIST_HEAD(&channel->item);
2211
2212         channel->common_reg = hldev->common_reg;
2213         channel->first_vp_id = hldev->first_vp_id;
2214         channel->type = type;
2215         channel->devh = hldev;
2216         channel->vph = vph;
2217         channel->userdata = userdata;
2218         channel->per_dtr_space = per_dtr_space;
2219         channel->length = length;
2220         channel->vp_id = vp_id;
2221
2222         channel->work_arr = kcalloc(length, sizeof(void *), GFP_KERNEL);
2223         if (channel->work_arr == NULL)
2224                 goto exit1;
2225
2226         channel->free_arr = kcalloc(length, sizeof(void *), GFP_KERNEL);
2227         if (channel->free_arr == NULL)
2228                 goto exit1;
2229         channel->free_ptr = length;
2230
2231         channel->reserve_arr = kcalloc(length, sizeof(void *), GFP_KERNEL);
2232         if (channel->reserve_arr == NULL)
2233                 goto exit1;
2234         channel->reserve_ptr = length;
2235         channel->reserve_top = 0;
2236
2237         channel->orig_arr = kcalloc(length, sizeof(void *), GFP_KERNEL);
2238         if (channel->orig_arr == NULL)
2239                 goto exit1;
2240
2241         return channel;
2242 exit1:
2243         __vxge_hw_channel_free(channel);
2244
2245 exit0:
2246         return NULL;
2247 }
2248
2249 /*
2250  * vxge_hw_blockpool_block_add - callback for vxge_os_dma_malloc_async
2251  * Adds a block to block pool
2252  */
2253 static void vxge_hw_blockpool_block_add(struct __vxge_hw_device *devh,
2254                                         void *block_addr,
2255                                         u32 length,
2256                                         struct pci_dev *dma_h,
2257                                         struct pci_dev *acc_handle)
2258 {
2259         struct __vxge_hw_blockpool *blockpool;
2260         struct __vxge_hw_blockpool_entry *entry = NULL;
2261         dma_addr_t dma_addr;
2262
2263         blockpool = &devh->block_pool;
2264
2265         if (block_addr == NULL) {
2266                 blockpool->req_out--;
2267                 goto exit;
2268         }
2269
2270         dma_addr = dma_map_single(&devh->pdev->dev, block_addr, length,
2271                                   DMA_BIDIRECTIONAL);
2272
2273         if (unlikely(dma_mapping_error(&devh->pdev->dev, dma_addr))) {
2274                 vxge_os_dma_free(devh->pdev, block_addr, &acc_handle);
2275                 blockpool->req_out--;
2276                 goto exit;
2277         }
2278
2279         if (!list_empty(&blockpool->free_entry_list))
2280                 entry = (struct __vxge_hw_blockpool_entry *)
2281                         list_first_entry(&blockpool->free_entry_list,
2282                                 struct __vxge_hw_blockpool_entry,
2283                                 item);
2284
2285         if (entry == NULL)
2286                 entry = vmalloc(sizeof(struct __vxge_hw_blockpool_entry));
2287         else
2288                 list_del(&entry->item);
2289
2290         if (entry) {
2291                 entry->length = length;
2292                 entry->memblock = block_addr;
2293                 entry->dma_addr = dma_addr;
2294                 entry->acc_handle = acc_handle;
2295                 entry->dma_handle = dma_h;
2296                 list_add(&entry->item, &blockpool->free_block_list);
2297                 blockpool->pool_size++;
2298         }
2299
2300         blockpool->req_out--;
2301
2302 exit:
2303         return;
2304 }
2305
2306 static inline void
2307 vxge_os_dma_malloc_async(struct pci_dev *pdev, void *devh, unsigned long size)
2308 {
2309         void *vaddr;
2310
2311         vaddr = kmalloc(size, GFP_KERNEL | GFP_DMA);
2312         vxge_hw_blockpool_block_add(devh, vaddr, size, pdev, pdev);
2313 }
2314
2315 /*
2316  * __vxge_hw_blockpool_blocks_add - Request additional blocks
2317  */
2318 static
2319 void __vxge_hw_blockpool_blocks_add(struct __vxge_hw_blockpool *blockpool)
2320 {
2321         u32 nreq = 0, i;
2322
2323         if ((blockpool->pool_size  +  blockpool->req_out) <
2324                 VXGE_HW_MIN_DMA_BLOCK_POOL_SIZE) {
2325                 nreq = VXGE_HW_INCR_DMA_BLOCK_POOL_SIZE;
2326                 blockpool->req_out += nreq;
2327         }
2328
2329         for (i = 0; i < nreq; i++)
2330                 vxge_os_dma_malloc_async(
2331                         (blockpool->hldev)->pdev,
2332                         blockpool->hldev, VXGE_HW_BLOCK_SIZE);
2333 }
2334
2335 /*
2336  * __vxge_hw_blockpool_malloc - Allocate a memory block from pool
2337  * Allocates a block of memory of given size, either from block pool
2338  * or by calling vxge_os_dma_malloc()
2339  */
2340 static void *__vxge_hw_blockpool_malloc(struct __vxge_hw_device *devh, u32 size,
2341                                         struct vxge_hw_mempool_dma *dma_object)
2342 {
2343         struct __vxge_hw_blockpool_entry *entry = NULL;
2344         struct __vxge_hw_blockpool  *blockpool;
2345         void *memblock = NULL;
2346
2347         blockpool = &devh->block_pool;
2348
2349         if (size != blockpool->block_size) {
2350
2351                 memblock = vxge_os_dma_malloc(devh->pdev, size,
2352                                                 &dma_object->handle,
2353                                                 &dma_object->acc_handle);
2354
2355                 if (!memblock)
2356                         goto exit;
2357
2358                 dma_object->addr = dma_map_single(&devh->pdev->dev, memblock,
2359                                                   size, DMA_BIDIRECTIONAL);
2360
2361                 if (unlikely(dma_mapping_error(&devh->pdev->dev, dma_object->addr))) {
2362                         vxge_os_dma_free(devh->pdev, memblock,
2363                                 &dma_object->acc_handle);
2364                         memblock = NULL;
2365                         goto exit;
2366                 }
2367
2368         } else {
2369
2370                 if (!list_empty(&blockpool->free_block_list))
2371                         entry = (struct __vxge_hw_blockpool_entry *)
2372                                 list_first_entry(&blockpool->free_block_list,
2373                                         struct __vxge_hw_blockpool_entry,
2374                                         item);
2375
2376                 if (entry != NULL) {
2377                         list_del(&entry->item);
2378                         dma_object->addr = entry->dma_addr;
2379                         dma_object->handle = entry->dma_handle;
2380                         dma_object->acc_handle = entry->acc_handle;
2381                         memblock = entry->memblock;
2382
2383                         list_add(&entry->item,
2384                                 &blockpool->free_entry_list);
2385                         blockpool->pool_size--;
2386                 }
2387
2388                 if (memblock != NULL)
2389                         __vxge_hw_blockpool_blocks_add(blockpool);
2390         }
2391 exit:
2392         return memblock;
2393 }
2394
2395 /*
2396  * __vxge_hw_blockpool_blocks_remove - Free additional blocks
2397  */
2398 static void
2399 __vxge_hw_blockpool_blocks_remove(struct __vxge_hw_blockpool *blockpool)
2400 {
2401         struct list_head *p, *n;
2402
2403         list_for_each_safe(p, n, &blockpool->free_block_list) {
2404
2405                 if (blockpool->pool_size < blockpool->pool_max)
2406                         break;
2407
2408                 dma_unmap_single(&(blockpool->hldev)->pdev->dev,
2409                                  ((struct __vxge_hw_blockpool_entry *)p)->dma_addr,
2410                                  ((struct __vxge_hw_blockpool_entry *)p)->length,
2411                                  DMA_BIDIRECTIONAL);
2412
2413                 vxge_os_dma_free(
2414                         (blockpool->hldev)->pdev,
2415                         ((struct __vxge_hw_blockpool_entry *)p)->memblock,
2416                         &((struct __vxge_hw_blockpool_entry *)p)->acc_handle);
2417
2418                 list_del(&((struct __vxge_hw_blockpool_entry *)p)->item);
2419
2420                 list_add(p, &blockpool->free_entry_list);
2421
2422                 blockpool->pool_size--;
2423
2424         }
2425 }
2426
2427 /*
2428  * __vxge_hw_blockpool_free - Frees the memory allcoated with
2429  *                              __vxge_hw_blockpool_malloc
2430  */
2431 static void __vxge_hw_blockpool_free(struct __vxge_hw_device *devh,
2432                                      void *memblock, u32 size,
2433                                      struct vxge_hw_mempool_dma *dma_object)
2434 {
2435         struct __vxge_hw_blockpool_entry *entry = NULL;
2436         struct __vxge_hw_blockpool  *blockpool;
2437         enum vxge_hw_status status = VXGE_HW_OK;
2438
2439         blockpool = &devh->block_pool;
2440
2441         if (size != blockpool->block_size) {
2442                 dma_unmap_single(&devh->pdev->dev, dma_object->addr, size,
2443                                  DMA_BIDIRECTIONAL);
2444                 vxge_os_dma_free(devh->pdev, memblock, &dma_object->acc_handle);
2445         } else {
2446
2447                 if (!list_empty(&blockpool->free_entry_list))
2448                         entry = (struct __vxge_hw_blockpool_entry *)
2449                                 list_first_entry(&blockpool->free_entry_list,
2450                                         struct __vxge_hw_blockpool_entry,
2451                                         item);
2452
2453                 if (entry == NULL)
2454                         entry = vmalloc(sizeof(
2455                                         struct __vxge_hw_blockpool_entry));
2456                 else
2457                         list_del(&entry->item);
2458
2459                 if (entry != NULL) {
2460                         entry->length = size;
2461                         entry->memblock = memblock;
2462                         entry->dma_addr = dma_object->addr;
2463                         entry->acc_handle = dma_object->acc_handle;
2464                         entry->dma_handle = dma_object->handle;
2465                         list_add(&entry->item,
2466                                         &blockpool->free_block_list);
2467                         blockpool->pool_size++;
2468                         status = VXGE_HW_OK;
2469                 } else
2470                         status = VXGE_HW_ERR_OUT_OF_MEMORY;
2471
2472                 if (status == VXGE_HW_OK)
2473                         __vxge_hw_blockpool_blocks_remove(blockpool);
2474         }
2475 }
2476
2477 /*
2478  * vxge_hw_mempool_destroy
2479  */
2480 static void __vxge_hw_mempool_destroy(struct vxge_hw_mempool *mempool)
2481 {
2482         u32 i, j;
2483         struct __vxge_hw_device *devh = mempool->devh;
2484
2485         for (i = 0; i < mempool->memblocks_allocated; i++) {
2486                 struct vxge_hw_mempool_dma *dma_object;
2487
2488                 vxge_assert(mempool->memblocks_arr[i]);
2489                 vxge_assert(mempool->memblocks_dma_arr + i);
2490
2491                 dma_object = mempool->memblocks_dma_arr + i;
2492
2493                 for (j = 0; j < mempool->items_per_memblock; j++) {
2494                         u32 index = i * mempool->items_per_memblock + j;
2495
2496                         /* to skip last partially filled(if any) memblock */
2497                         if (index >= mempool->items_current)
2498                                 break;
2499                 }
2500
2501                 vfree(mempool->memblocks_priv_arr[i]);
2502
2503                 __vxge_hw_blockpool_free(devh, mempool->memblocks_arr[i],
2504                                 mempool->memblock_size, dma_object);
2505         }
2506
2507         vfree(mempool->items_arr);
2508         vfree(mempool->memblocks_dma_arr);
2509         vfree(mempool->memblocks_priv_arr);
2510         vfree(mempool->memblocks_arr);
2511         vfree(mempool);
2512 }
2513
2514 /*
2515  * __vxge_hw_mempool_grow
2516  * Will resize mempool up to %num_allocate value.
2517  */
2518 static enum vxge_hw_status
2519 __vxge_hw_mempool_grow(struct vxge_hw_mempool *mempool, u32 num_allocate,
2520                        u32 *num_allocated)
2521 {
2522         u32 i, first_time = mempool->memblocks_allocated == 0 ? 1 : 0;
2523         u32 n_items = mempool->items_per_memblock;
2524         u32 start_block_idx = mempool->memblocks_allocated;
2525         u32 end_block_idx = mempool->memblocks_allocated + num_allocate;
2526         enum vxge_hw_status status = VXGE_HW_OK;
2527
2528         *num_allocated = 0;
2529
2530         if (end_block_idx > mempool->memblocks_max) {
2531                 status = VXGE_HW_ERR_OUT_OF_MEMORY;
2532                 goto exit;
2533         }
2534
2535         for (i = start_block_idx; i < end_block_idx; i++) {
2536                 u32 j;
2537                 u32 is_last = ((end_block_idx - 1) == i);
2538                 struct vxge_hw_mempool_dma *dma_object =
2539                         mempool->memblocks_dma_arr + i;
2540                 void *the_memblock;
2541
2542                 /* allocate memblock's private part. Each DMA memblock
2543                  * has a space allocated for item's private usage upon
2544                  * mempool's user request. Each time mempool grows, it will
2545                  * allocate new memblock and its private part at once.
2546                  * This helps to minimize memory usage a lot. */
2547                 mempool->memblocks_priv_arr[i] =
2548                         vzalloc(array_size(mempool->items_priv_size, n_items));
2549                 if (mempool->memblocks_priv_arr[i] == NULL) {
2550                         status = VXGE_HW_ERR_OUT_OF_MEMORY;
2551                         goto exit;
2552                 }
2553
2554                 /* allocate DMA-capable memblock */
2555                 mempool->memblocks_arr[i] =
2556                         __vxge_hw_blockpool_malloc(mempool->devh,
2557                                 mempool->memblock_size, dma_object);
2558                 if (mempool->memblocks_arr[i] == NULL) {
2559                         vfree(mempool->memblocks_priv_arr[i]);
2560                         status = VXGE_HW_ERR_OUT_OF_MEMORY;
2561                         goto exit;
2562                 }
2563
2564                 (*num_allocated)++;
2565                 mempool->memblocks_allocated++;
2566
2567                 memset(mempool->memblocks_arr[i], 0, mempool->memblock_size);
2568
2569                 the_memblock = mempool->memblocks_arr[i];
2570
2571                 /* fill the items hash array */
2572                 for (j = 0; j < n_items; j++) {
2573                         u32 index = i * n_items + j;
2574
2575                         if (first_time && index >= mempool->items_initial)
2576                                 break;
2577
2578                         mempool->items_arr[index] =
2579                                 ((char *)the_memblock + j*mempool->item_size);
2580
2581                         /* let caller to do more job on each item */
2582                         if (mempool->item_func_alloc != NULL)
2583                                 mempool->item_func_alloc(mempool, i,
2584                                         dma_object, index, is_last);
2585
2586                         mempool->items_current = index + 1;
2587                 }
2588
2589                 if (first_time && mempool->items_current ==
2590                                         mempool->items_initial)
2591                         break;
2592         }
2593 exit:
2594         return status;
2595 }
2596
2597 /*
2598  * vxge_hw_mempool_create
2599  * This function will create memory pool object. Pool may grow but will
2600  * never shrink. Pool consists of number of dynamically allocated blocks
2601  * with size enough to hold %items_initial number of items. Memory is
2602  * DMA-able but client must map/unmap before interoperating with the device.
2603  */
2604 static struct vxge_hw_mempool *
2605 __vxge_hw_mempool_create(struct __vxge_hw_device *devh,
2606                          u32 memblock_size,
2607                          u32 item_size,
2608                          u32 items_priv_size,
2609                          u32 items_initial,
2610                          u32 items_max,
2611                          const struct vxge_hw_mempool_cbs *mp_callback,
2612                          void *userdata)
2613 {
2614         enum vxge_hw_status status = VXGE_HW_OK;
2615         u32 memblocks_to_allocate;
2616         struct vxge_hw_mempool *mempool = NULL;
2617         u32 allocated;
2618
2619         if (memblock_size < item_size) {
2620                 status = VXGE_HW_FAIL;
2621                 goto exit;
2622         }
2623
2624         mempool = vzalloc(sizeof(struct vxge_hw_mempool));
2625         if (mempool == NULL) {
2626                 status = VXGE_HW_ERR_OUT_OF_MEMORY;
2627                 goto exit;
2628         }
2629
2630         mempool->devh                   = devh;
2631         mempool->memblock_size          = memblock_size;
2632         mempool->items_max              = items_max;
2633         mempool->items_initial          = items_initial;
2634         mempool->item_size              = item_size;
2635         mempool->items_priv_size        = items_priv_size;
2636         mempool->item_func_alloc        = mp_callback->item_func_alloc;
2637         mempool->userdata               = userdata;
2638
2639         mempool->memblocks_allocated = 0;
2640
2641         mempool->items_per_memblock = memblock_size / item_size;
2642
2643         mempool->memblocks_max = (items_max + mempool->items_per_memblock - 1) /
2644                                         mempool->items_per_memblock;
2645
2646         /* allocate array of memblocks */
2647         mempool->memblocks_arr =
2648                 vzalloc(array_size(sizeof(void *), mempool->memblocks_max));
2649         if (mempool->memblocks_arr == NULL) {
2650                 __vxge_hw_mempool_destroy(mempool);
2651                 status = VXGE_HW_ERR_OUT_OF_MEMORY;
2652                 mempool = NULL;
2653                 goto exit;
2654         }
2655
2656         /* allocate array of private parts of items per memblocks */
2657         mempool->memblocks_priv_arr =
2658                 vzalloc(array_size(sizeof(void *), mempool->memblocks_max));
2659         if (mempool->memblocks_priv_arr == NULL) {
2660                 __vxge_hw_mempool_destroy(mempool);
2661                 status = VXGE_HW_ERR_OUT_OF_MEMORY;
2662                 mempool = NULL;
2663                 goto exit;
2664         }
2665
2666         /* allocate array of memblocks DMA objects */
2667         mempool->memblocks_dma_arr =
2668                 vzalloc(array_size(sizeof(struct vxge_hw_mempool_dma),
2669                                    mempool->memblocks_max));
2670         if (mempool->memblocks_dma_arr == NULL) {
2671                 __vxge_hw_mempool_destroy(mempool);
2672                 status = VXGE_HW_ERR_OUT_OF_MEMORY;
2673                 mempool = NULL;
2674                 goto exit;
2675         }
2676
2677         /* allocate hash array of items */
2678         mempool->items_arr = vzalloc(array_size(sizeof(void *),
2679                                                 mempool->items_max));
2680         if (mempool->items_arr == NULL) {
2681                 __vxge_hw_mempool_destroy(mempool);
2682                 status = VXGE_HW_ERR_OUT_OF_MEMORY;
2683                 mempool = NULL;
2684                 goto exit;
2685         }
2686
2687         /* calculate initial number of memblocks */
2688         memblocks_to_allocate = (mempool->items_initial +
2689                                  mempool->items_per_memblock - 1) /
2690                                                 mempool->items_per_memblock;
2691
2692         /* pre-allocate the mempool */
2693         status = __vxge_hw_mempool_grow(mempool, memblocks_to_allocate,
2694                                         &allocated);
2695         if (status != VXGE_HW_OK) {
2696                 __vxge_hw_mempool_destroy(mempool);
2697                 status = VXGE_HW_ERR_OUT_OF_MEMORY;
2698                 mempool = NULL;
2699                 goto exit;
2700         }
2701
2702 exit:
2703         return mempool;
2704 }
2705
2706 /*
2707  * __vxge_hw_ring_abort - Returns the RxD
2708  * This function terminates the RxDs of ring
2709  */
2710 static enum vxge_hw_status __vxge_hw_ring_abort(struct __vxge_hw_ring *ring)
2711 {
2712         void *rxdh;
2713         struct __vxge_hw_channel *channel;
2714
2715         channel = &ring->channel;
2716
2717         for (;;) {
2718                 vxge_hw_channel_dtr_try_complete(channel, &rxdh);
2719
2720                 if (rxdh == NULL)
2721                         break;
2722
2723                 vxge_hw_channel_dtr_complete(channel);
2724
2725                 if (ring->rxd_term)
2726                         ring->rxd_term(rxdh, VXGE_HW_RXD_STATE_POSTED,
2727                                 channel->userdata);
2728
2729                 vxge_hw_channel_dtr_free(channel, rxdh);
2730         }
2731
2732         return VXGE_HW_OK;
2733 }
2734
2735 /*
2736  * __vxge_hw_ring_reset - Resets the ring
2737  * This function resets the ring during vpath reset operation
2738  */
2739 static enum vxge_hw_status __vxge_hw_ring_reset(struct __vxge_hw_ring *ring)
2740 {
2741         enum vxge_hw_status status = VXGE_HW_OK;
2742         struct __vxge_hw_channel *channel;
2743
2744         channel = &ring->channel;
2745
2746         __vxge_hw_ring_abort(ring);
2747
2748         status = __vxge_hw_channel_reset(channel);
2749
2750         if (status != VXGE_HW_OK)
2751                 goto exit;
2752
2753         if (ring->rxd_init) {
2754                 status = vxge_hw_ring_replenish(ring);
2755                 if (status != VXGE_HW_OK)
2756                         goto exit;
2757         }
2758 exit:
2759         return status;
2760 }
2761
2762 /*
2763  * __vxge_hw_ring_delete - Removes the ring
2764  * This function freeup the memory pool and removes the ring
2765  */
2766 static enum vxge_hw_status
2767 __vxge_hw_ring_delete(struct __vxge_hw_vpath_handle *vp)
2768 {
2769         struct __vxge_hw_ring *ring = vp->vpath->ringh;
2770
2771         __vxge_hw_ring_abort(ring);
2772
2773         if (ring->mempool)
2774                 __vxge_hw_mempool_destroy(ring->mempool);
2775
2776         vp->vpath->ringh = NULL;
2777         __vxge_hw_channel_free(&ring->channel);
2778
2779         return VXGE_HW_OK;
2780 }
2781
2782 /*
2783  * __vxge_hw_ring_create - Create a Ring
2784  * This function creates Ring and initializes it.
2785  */
2786 static enum vxge_hw_status
2787 __vxge_hw_ring_create(struct __vxge_hw_vpath_handle *vp,
2788                       struct vxge_hw_ring_attr *attr)
2789 {
2790         enum vxge_hw_status status = VXGE_HW_OK;
2791         struct __vxge_hw_ring *ring;
2792         u32 ring_length;
2793         struct vxge_hw_ring_config *config;
2794         struct __vxge_hw_device *hldev;
2795         u32 vp_id;
2796         static const struct vxge_hw_mempool_cbs ring_mp_callback = {
2797                 .item_func_alloc = __vxge_hw_ring_mempool_item_alloc,
2798         };
2799
2800         if ((vp == NULL) || (attr == NULL)) {
2801                 status = VXGE_HW_FAIL;
2802                 goto exit;
2803         }
2804
2805         hldev = vp->vpath->hldev;
2806         vp_id = vp->vpath->vp_id;
2807
2808         config = &hldev->config.vp_config[vp_id].ring;
2809
2810         ring_length = config->ring_blocks *
2811                         vxge_hw_ring_rxds_per_block_get(config->buffer_mode);
2812
2813         ring = (struct __vxge_hw_ring *)__vxge_hw_channel_allocate(vp,
2814                                                 VXGE_HW_CHANNEL_TYPE_RING,
2815                                                 ring_length,
2816                                                 attr->per_rxd_space,
2817                                                 attr->userdata);
2818         if (ring == NULL) {
2819                 status = VXGE_HW_ERR_OUT_OF_MEMORY;
2820                 goto exit;
2821         }
2822
2823         vp->vpath->ringh = ring;
2824         ring->vp_id = vp_id;
2825         ring->vp_reg = vp->vpath->vp_reg;
2826         ring->common_reg = hldev->common_reg;
2827         ring->stats = &vp->vpath->sw_stats->ring_stats;
2828         ring->config = config;
2829         ring->callback = attr->callback;
2830         ring->rxd_init = attr->rxd_init;
2831         ring->rxd_term = attr->rxd_term;
2832         ring->buffer_mode = config->buffer_mode;
2833         ring->tim_rti_cfg1_saved = vp->vpath->tim_rti_cfg1_saved;
2834         ring->tim_rti_cfg3_saved = vp->vpath->tim_rti_cfg3_saved;
2835         ring->rxds_limit = config->rxds_limit;
2836
2837         ring->rxd_size = vxge_hw_ring_rxd_size_get(config->buffer_mode);
2838         ring->rxd_priv_size =
2839                 sizeof(struct __vxge_hw_ring_rxd_priv) + attr->per_rxd_space;
2840         ring->per_rxd_space = attr->per_rxd_space;
2841
2842         ring->rxd_priv_size =
2843                 ((ring->rxd_priv_size + VXGE_CACHE_LINE_SIZE - 1) /
2844                 VXGE_CACHE_LINE_SIZE) * VXGE_CACHE_LINE_SIZE;
2845
2846         /* how many RxDs can fit into one block. Depends on configured
2847          * buffer_mode. */
2848         ring->rxds_per_block =
2849                 vxge_hw_ring_rxds_per_block_get(config->buffer_mode);
2850
2851         /* calculate actual RxD block private size */
2852         ring->rxdblock_priv_size = ring->rxd_priv_size * ring->rxds_per_block;
2853         ring->mempool = __vxge_hw_mempool_create(hldev,
2854                                 VXGE_HW_BLOCK_SIZE,
2855                                 VXGE_HW_BLOCK_SIZE,
2856                                 ring->rxdblock_priv_size,
2857                                 ring->config->ring_blocks,
2858                                 ring->config->ring_blocks,
2859                                 &ring_mp_callback,
2860                                 ring);
2861         if (ring->mempool == NULL) {
2862                 __vxge_hw_ring_delete(vp);
2863                 return VXGE_HW_ERR_OUT_OF_MEMORY;
2864         }
2865
2866         status = __vxge_hw_channel_initialize(&ring->channel);
2867         if (status != VXGE_HW_OK) {
2868                 __vxge_hw_ring_delete(vp);
2869                 goto exit;
2870         }
2871
2872         /* Note:
2873          * Specifying rxd_init callback means two things:
2874          * 1) rxds need to be initialized by driver at channel-open time;
2875          * 2) rxds need to be posted at channel-open time
2876          *    (that's what the initial_replenish() below does)
2877          * Currently we don't have a case when the 1) is done without the 2).
2878          */
2879         if (ring->rxd_init) {
2880                 status = vxge_hw_ring_replenish(ring);
2881                 if (status != VXGE_HW_OK) {
2882                         __vxge_hw_ring_delete(vp);
2883                         goto exit;
2884                 }
2885         }
2886
2887         /* initial replenish will increment the counter in its post() routine,
2888          * we have to reset it */
2889         ring->stats->common_stats.usage_cnt = 0;
2890 exit:
2891         return status;
2892 }
2893
2894 /*
2895  * vxge_hw_device_config_default_get - Initialize device config with defaults.
2896  * Initialize Titan device config with default values.
2897  */
2898 enum vxge_hw_status
2899 vxge_hw_device_config_default_get(struct vxge_hw_device_config *device_config)
2900 {
2901         u32 i;
2902
2903         device_config->dma_blockpool_initial =
2904                                         VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
2905         device_config->dma_blockpool_max = VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
2906         device_config->intr_mode = VXGE_HW_INTR_MODE_DEF;
2907         device_config->rth_en = VXGE_HW_RTH_DEFAULT;
2908         device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_DEFAULT;
2909         device_config->device_poll_millis =  VXGE_HW_DEF_DEVICE_POLL_MILLIS;
2910         device_config->rts_mac_en =  VXGE_HW_RTS_MAC_DEFAULT;
2911
2912         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
2913                 device_config->vp_config[i].vp_id = i;
2914
2915                 device_config->vp_config[i].min_bandwidth =
2916                                 VXGE_HW_VPATH_BANDWIDTH_DEFAULT;
2917
2918                 device_config->vp_config[i].ring.enable = VXGE_HW_RING_DEFAULT;
2919
2920                 device_config->vp_config[i].ring.ring_blocks =
2921                                 VXGE_HW_DEF_RING_BLOCKS;
2922
2923                 device_config->vp_config[i].ring.buffer_mode =
2924                                 VXGE_HW_RING_RXD_BUFFER_MODE_DEFAULT;
2925
2926                 device_config->vp_config[i].ring.scatter_mode =
2927                                 VXGE_HW_RING_SCATTER_MODE_USE_FLASH_DEFAULT;
2928
2929                 device_config->vp_config[i].ring.rxds_limit =
2930                                 VXGE_HW_DEF_RING_RXDS_LIMIT;
2931
2932                 device_config->vp_config[i].fifo.enable = VXGE_HW_FIFO_ENABLE;
2933
2934                 device_config->vp_config[i].fifo.fifo_blocks =
2935                                 VXGE_HW_MIN_FIFO_BLOCKS;
2936
2937                 device_config->vp_config[i].fifo.max_frags =
2938                                 VXGE_HW_MAX_FIFO_FRAGS;
2939
2940                 device_config->vp_config[i].fifo.memblock_size =
2941                                 VXGE_HW_DEF_FIFO_MEMBLOCK_SIZE;
2942
2943                 device_config->vp_config[i].fifo.alignment_size =
2944                                 VXGE_HW_DEF_FIFO_ALIGNMENT_SIZE;
2945
2946                 device_config->vp_config[i].fifo.intr =
2947                                 VXGE_HW_FIFO_QUEUE_INTR_DEFAULT;
2948
2949                 device_config->vp_config[i].fifo.no_snoop_bits =
2950                                 VXGE_HW_FIFO_NO_SNOOP_DEFAULT;
2951                 device_config->vp_config[i].tti.intr_enable =
2952                                 VXGE_HW_TIM_INTR_DEFAULT;
2953
2954                 device_config->vp_config[i].tti.btimer_val =
2955                                 VXGE_HW_USE_FLASH_DEFAULT;
2956
2957                 device_config->vp_config[i].tti.timer_ac_en =
2958                                 VXGE_HW_USE_FLASH_DEFAULT;
2959
2960                 device_config->vp_config[i].tti.timer_ci_en =
2961                                 VXGE_HW_USE_FLASH_DEFAULT;
2962
2963                 device_config->vp_config[i].tti.timer_ri_en =
2964                                 VXGE_HW_USE_FLASH_DEFAULT;
2965
2966                 device_config->vp_config[i].tti.rtimer_val =
2967                                 VXGE_HW_USE_FLASH_DEFAULT;
2968
2969                 device_config->vp_config[i].tti.util_sel =
2970                                 VXGE_HW_USE_FLASH_DEFAULT;
2971
2972                 device_config->vp_config[i].tti.ltimer_val =
2973                                 VXGE_HW_USE_FLASH_DEFAULT;
2974
2975                 device_config->vp_config[i].tti.urange_a =
2976                                 VXGE_HW_USE_FLASH_DEFAULT;
2977
2978                 device_config->vp_config[i].tti.uec_a =
2979                                 VXGE_HW_USE_FLASH_DEFAULT;
2980
2981                 device_config->vp_config[i].tti.urange_b =
2982                                 VXGE_HW_USE_FLASH_DEFAULT;
2983
2984                 device_config->vp_config[i].tti.uec_b =
2985                                 VXGE_HW_USE_FLASH_DEFAULT;
2986
2987                 device_config->vp_config[i].tti.urange_c =
2988                                 VXGE_HW_USE_FLASH_DEFAULT;
2989
2990                 device_config->vp_config[i].tti.uec_c =
2991                                 VXGE_HW_USE_FLASH_DEFAULT;
2992
2993                 device_config->vp_config[i].tti.uec_d =
2994                                 VXGE_HW_USE_FLASH_DEFAULT;
2995
2996                 device_config->vp_config[i].rti.intr_enable =
2997                                 VXGE_HW_TIM_INTR_DEFAULT;
2998
2999                 device_config->vp_config[i].rti.btimer_val =
3000                                 VXGE_HW_USE_FLASH_DEFAULT;
3001
3002                 device_config->vp_config[i].rti.timer_ac_en =
3003                                 VXGE_HW_USE_FLASH_DEFAULT;
3004
3005                 device_config->vp_config[i].rti.timer_ci_en =
3006                                 VXGE_HW_USE_FLASH_DEFAULT;
3007
3008                 device_config->vp_config[i].rti.timer_ri_en =
3009                                 VXGE_HW_USE_FLASH_DEFAULT;
3010
3011                 device_config->vp_config[i].rti.rtimer_val =
3012                                 VXGE_HW_USE_FLASH_DEFAULT;
3013
3014                 device_config->vp_config[i].rti.util_sel =
3015                                 VXGE_HW_USE_FLASH_DEFAULT;
3016
3017                 device_config->vp_config[i].rti.ltimer_val =
3018                                 VXGE_HW_USE_FLASH_DEFAULT;
3019
3020                 device_config->vp_config[i].rti.urange_a =
3021                                 VXGE_HW_USE_FLASH_DEFAULT;
3022
3023                 device_config->vp_config[i].rti.uec_a =
3024                                 VXGE_HW_USE_FLASH_DEFAULT;
3025
3026                 device_config->vp_config[i].rti.urange_b =
3027                                 VXGE_HW_USE_FLASH_DEFAULT;
3028
3029                 device_config->vp_config[i].rti.uec_b =
3030                                 VXGE_HW_USE_FLASH_DEFAULT;
3031
3032                 device_config->vp_config[i].rti.urange_c =
3033                                 VXGE_HW_USE_FLASH_DEFAULT;
3034
3035                 device_config->vp_config[i].rti.uec_c =
3036                                 VXGE_HW_USE_FLASH_DEFAULT;
3037
3038                 device_config->vp_config[i].rti.uec_d =
3039                                 VXGE_HW_USE_FLASH_DEFAULT;
3040
3041                 device_config->vp_config[i].mtu =
3042                                 VXGE_HW_VPATH_USE_FLASH_DEFAULT_INITIAL_MTU;
3043
3044                 device_config->vp_config[i].rpa_strip_vlan_tag =
3045                         VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_USE_FLASH_DEFAULT;
3046         }
3047
3048         return VXGE_HW_OK;
3049 }
3050
3051 /*
3052  * __vxge_hw_vpath_swapper_set - Set the swapper bits for the vpath.
3053  * Set the swapper bits appropriately for the vpath.
3054  */
3055 static enum vxge_hw_status
3056 __vxge_hw_vpath_swapper_set(struct vxge_hw_vpath_reg __iomem *vpath_reg)
3057 {
3058 #ifndef __BIG_ENDIAN
3059         u64 val64;
3060
3061         val64 = readq(&vpath_reg->vpath_general_cfg1);
3062         wmb();
3063         val64 |= VXGE_HW_VPATH_GENERAL_CFG1_CTL_BYTE_SWAPEN;
3064         writeq(val64, &vpath_reg->vpath_general_cfg1);
3065         wmb();
3066 #endif
3067         return VXGE_HW_OK;
3068 }
3069
3070 /*
3071  * __vxge_hw_kdfc_swapper_set - Set the swapper bits for the kdfc.
3072  * Set the swapper bits appropriately for the vpath.
3073  */
3074 static enum vxge_hw_status
3075 __vxge_hw_kdfc_swapper_set(struct vxge_hw_legacy_reg __iomem *legacy_reg,
3076                            struct vxge_hw_vpath_reg __iomem *vpath_reg)
3077 {
3078         u64 val64;
3079
3080         val64 = readq(&legacy_reg->pifm_wr_swap_en);
3081
3082         if (val64 == VXGE_HW_SWAPPER_WRITE_BYTE_SWAP_ENABLE) {
3083                 val64 = readq(&vpath_reg->kdfcctl_cfg0);
3084                 wmb();
3085
3086                 val64 |= VXGE_HW_KDFCCTL_CFG0_BYTE_SWAPEN_FIFO0 |
3087                         VXGE_HW_KDFCCTL_CFG0_BYTE_SWAPEN_FIFO1  |
3088                         VXGE_HW_KDFCCTL_CFG0_BYTE_SWAPEN_FIFO2;
3089
3090                 writeq(val64, &vpath_reg->kdfcctl_cfg0);
3091                 wmb();
3092         }
3093
3094         return VXGE_HW_OK;
3095 }
3096
3097 /*
3098  * vxge_hw_mgmt_reg_read - Read Titan register.
3099  */
3100 enum vxge_hw_status
3101 vxge_hw_mgmt_reg_read(struct __vxge_hw_device *hldev,
3102                       enum vxge_hw_mgmt_reg_type type,
3103                       u32 index, u32 offset, u64 *value)
3104 {
3105         enum vxge_hw_status status = VXGE_HW_OK;
3106
3107         if ((hldev == NULL) || (hldev->magic != VXGE_HW_DEVICE_MAGIC)) {
3108                 status = VXGE_HW_ERR_INVALID_DEVICE;
3109                 goto exit;
3110         }
3111
3112         switch (type) {
3113         case vxge_hw_mgmt_reg_type_legacy:
3114                 if (offset > sizeof(struct vxge_hw_legacy_reg) - 8) {
3115                         status = VXGE_HW_ERR_INVALID_OFFSET;
3116                         break;
3117                 }
3118                 *value = readq((void __iomem *)hldev->legacy_reg + offset);
3119                 break;
3120         case vxge_hw_mgmt_reg_type_toc:
3121                 if (offset > sizeof(struct vxge_hw_toc_reg) - 8) {
3122                         status = VXGE_HW_ERR_INVALID_OFFSET;
3123                         break;
3124                 }
3125                 *value = readq((void __iomem *)hldev->toc_reg + offset);
3126                 break;
3127         case vxge_hw_mgmt_reg_type_common:
3128                 if (offset > sizeof(struct vxge_hw_common_reg) - 8) {
3129                         status = VXGE_HW_ERR_INVALID_OFFSET;
3130                         break;
3131                 }
3132                 *value = readq((void __iomem *)hldev->common_reg + offset);
3133                 break;
3134         case vxge_hw_mgmt_reg_type_mrpcim:
3135                 if (!(hldev->access_rights &
3136                         VXGE_HW_DEVICE_ACCESS_RIGHT_MRPCIM)) {
3137                         status = VXGE_HW_ERR_PRIVILEGED_OPERATION;
3138                         break;
3139                 }
3140                 if (offset > sizeof(struct vxge_hw_mrpcim_reg) - 8) {
3141                         status = VXGE_HW_ERR_INVALID_OFFSET;
3142                         break;
3143                 }
3144                 *value = readq((void __iomem *)hldev->mrpcim_reg + offset);
3145                 break;
3146         case vxge_hw_mgmt_reg_type_srpcim:
3147                 if (!(hldev->access_rights &
3148                         VXGE_HW_DEVICE_ACCESS_RIGHT_SRPCIM)) {
3149                         status = VXGE_HW_ERR_PRIVILEGED_OPERATION;
3150                         break;
3151                 }
3152                 if (index > VXGE_HW_TITAN_SRPCIM_REG_SPACES - 1) {
3153                         status = VXGE_HW_ERR_INVALID_INDEX;
3154                         break;
3155                 }
3156                 if (offset > sizeof(struct vxge_hw_srpcim_reg) - 8) {
3157                         status = VXGE_HW_ERR_INVALID_OFFSET;
3158                         break;
3159                 }
3160                 *value = readq((void __iomem *)hldev->srpcim_reg[index] +
3161                                 offset);
3162                 break;
3163         case vxge_hw_mgmt_reg_type_vpmgmt:
3164                 if ((index > VXGE_HW_TITAN_VPMGMT_REG_SPACES - 1) ||
3165                         (!(hldev->vpath_assignments & vxge_mBIT(index)))) {
3166                         status = VXGE_HW_ERR_INVALID_INDEX;
3167                         break;
3168                 }
3169                 if (offset > sizeof(struct vxge_hw_vpmgmt_reg) - 8) {
3170                         status = VXGE_HW_ERR_INVALID_OFFSET;
3171                         break;
3172                 }
3173                 *value = readq((void __iomem *)hldev->vpmgmt_reg[index] +
3174                                 offset);
3175                 break;
3176         case vxge_hw_mgmt_reg_type_vpath:
3177                 if ((index > VXGE_HW_TITAN_VPATH_REG_SPACES - 1) ||
3178                         (!(hldev->vpath_assignments & vxge_mBIT(index)))) {
3179                         status = VXGE_HW_ERR_INVALID_INDEX;
3180                         break;
3181                 }
3182                 if (index > VXGE_HW_TITAN_VPATH_REG_SPACES - 1) {
3183                         status = VXGE_HW_ERR_INVALID_INDEX;
3184                         break;
3185                 }
3186                 if (offset > sizeof(struct vxge_hw_vpath_reg) - 8) {
3187                         status = VXGE_HW_ERR_INVALID_OFFSET;
3188                         break;
3189                 }
3190                 *value = readq((void __iomem *)hldev->vpath_reg[index] +
3191                                 offset);
3192                 break;
3193         default:
3194                 status = VXGE_HW_ERR_INVALID_TYPE;
3195                 break;
3196         }
3197
3198 exit:
3199         return status;
3200 }
3201
3202 /*
3203  * vxge_hw_vpath_strip_fcs_check - Check for FCS strip.
3204  */
3205 enum vxge_hw_status
3206 vxge_hw_vpath_strip_fcs_check(struct __vxge_hw_device *hldev, u64 vpath_mask)
3207 {
3208         struct vxge_hw_vpmgmt_reg       __iomem *vpmgmt_reg;
3209         int i = 0, j = 0;
3210
3211         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3212                 if (!((vpath_mask) & vxge_mBIT(i)))
3213                         continue;
3214                 vpmgmt_reg = hldev->vpmgmt_reg[i];
3215                 for (j = 0; j < VXGE_HW_MAC_MAX_MAC_PORT_ID; j++) {
3216                         if (readq(&vpmgmt_reg->rxmac_cfg0_port_vpmgmt_clone[j])
3217                         & VXGE_HW_RXMAC_CFG0_PORT_VPMGMT_CLONE_STRIP_FCS)
3218                                 return VXGE_HW_FAIL;
3219                 }
3220         }
3221         return VXGE_HW_OK;
3222 }
3223 /*
3224  * vxge_hw_mgmt_reg_Write - Write Titan register.
3225  */
3226 enum vxge_hw_status
3227 vxge_hw_mgmt_reg_write(struct __vxge_hw_device *hldev,
3228                       enum vxge_hw_mgmt_reg_type type,
3229                       u32 index, u32 offset, u64 value)
3230 {
3231         enum vxge_hw_status status = VXGE_HW_OK;
3232
3233         if ((hldev == NULL) || (hldev->magic != VXGE_HW_DEVICE_MAGIC)) {
3234                 status = VXGE_HW_ERR_INVALID_DEVICE;
3235                 goto exit;
3236         }
3237
3238         switch (type) {
3239         case vxge_hw_mgmt_reg_type_legacy:
3240                 if (offset > sizeof(struct vxge_hw_legacy_reg) - 8) {
3241                         status = VXGE_HW_ERR_INVALID_OFFSET;
3242                         break;
3243                 }
3244                 writeq(value, (void __iomem *)hldev->legacy_reg + offset);
3245                 break;
3246         case vxge_hw_mgmt_reg_type_toc:
3247                 if (offset > sizeof(struct vxge_hw_toc_reg) - 8) {
3248                         status = VXGE_HW_ERR_INVALID_OFFSET;
3249                         break;
3250                 }
3251                 writeq(value, (void __iomem *)hldev->toc_reg + offset);
3252                 break;
3253         case vxge_hw_mgmt_reg_type_common:
3254                 if (offset > sizeof(struct vxge_hw_common_reg) - 8) {
3255                         status = VXGE_HW_ERR_INVALID_OFFSET;
3256                         break;
3257                 }
3258                 writeq(value, (void __iomem *)hldev->common_reg + offset);
3259                 break;
3260         case vxge_hw_mgmt_reg_type_mrpcim:
3261                 if (!(hldev->access_rights &
3262                         VXGE_HW_DEVICE_ACCESS_RIGHT_MRPCIM)) {
3263                         status = VXGE_HW_ERR_PRIVILEGED_OPERATION;
3264                         break;
3265                 }
3266                 if (offset > sizeof(struct vxge_hw_mrpcim_reg) - 8) {
3267                         status = VXGE_HW_ERR_INVALID_OFFSET;
3268                         break;
3269                 }
3270                 writeq(value, (void __iomem *)hldev->mrpcim_reg + offset);
3271                 break;
3272         case vxge_hw_mgmt_reg_type_srpcim:
3273                 if (!(hldev->access_rights &
3274                         VXGE_HW_DEVICE_ACCESS_RIGHT_SRPCIM)) {
3275                         status = VXGE_HW_ERR_PRIVILEGED_OPERATION;
3276                         break;
3277                 }
3278                 if (index > VXGE_HW_TITAN_SRPCIM_REG_SPACES - 1) {
3279                         status = VXGE_HW_ERR_INVALID_INDEX;
3280                         break;
3281                 }
3282                 if (offset > sizeof(struct vxge_hw_srpcim_reg) - 8) {
3283                         status = VXGE_HW_ERR_INVALID_OFFSET;
3284                         break;
3285                 }
3286                 writeq(value, (void __iomem *)hldev->srpcim_reg[index] +
3287                         offset);
3288
3289                 break;
3290         case vxge_hw_mgmt_reg_type_vpmgmt:
3291                 if ((index > VXGE_HW_TITAN_VPMGMT_REG_SPACES - 1) ||
3292                         (!(hldev->vpath_assignments & vxge_mBIT(index)))) {
3293                         status = VXGE_HW_ERR_INVALID_INDEX;
3294                         break;
3295                 }
3296                 if (offset > sizeof(struct vxge_hw_vpmgmt_reg) - 8) {
3297                         status = VXGE_HW_ERR_INVALID_OFFSET;
3298                         break;
3299                 }
3300                 writeq(value, (void __iomem *)hldev->vpmgmt_reg[index] +
3301                         offset);
3302                 break;
3303         case vxge_hw_mgmt_reg_type_vpath:
3304                 if ((index > VXGE_HW_TITAN_VPATH_REG_SPACES-1) ||
3305                         (!(hldev->vpath_assignments & vxge_mBIT(index)))) {
3306                         status = VXGE_HW_ERR_INVALID_INDEX;
3307                         break;
3308                 }
3309                 if (offset > sizeof(struct vxge_hw_vpath_reg) - 8) {
3310                         status = VXGE_HW_ERR_INVALID_OFFSET;
3311                         break;
3312                 }
3313                 writeq(value, (void __iomem *)hldev->vpath_reg[index] +
3314                         offset);
3315                 break;
3316         default:
3317                 status = VXGE_HW_ERR_INVALID_TYPE;
3318                 break;
3319         }
3320 exit:
3321         return status;
3322 }
3323
3324 /*
3325  * __vxge_hw_fifo_abort - Returns the TxD
3326  * This function terminates the TxDs of fifo
3327  */
3328 static enum vxge_hw_status __vxge_hw_fifo_abort(struct __vxge_hw_fifo *fifo)
3329 {
3330         void *txdlh;
3331
3332         for (;;) {
3333                 vxge_hw_channel_dtr_try_complete(&fifo->channel, &txdlh);
3334
3335                 if (txdlh == NULL)
3336                         break;
3337
3338                 vxge_hw_channel_dtr_complete(&fifo->channel);
3339
3340                 if (fifo->txdl_term) {
3341                         fifo->txdl_term(txdlh,
3342                         VXGE_HW_TXDL_STATE_POSTED,
3343                         fifo->channel.userdata);
3344                 }
3345
3346                 vxge_hw_channel_dtr_free(&fifo->channel, txdlh);
3347         }
3348
3349         return VXGE_HW_OK;
3350 }
3351
3352 /*
3353  * __vxge_hw_fifo_reset - Resets the fifo
3354  * This function resets the fifo during vpath reset operation
3355  */
3356 static enum vxge_hw_status __vxge_hw_fifo_reset(struct __vxge_hw_fifo *fifo)
3357 {
3358         enum vxge_hw_status status = VXGE_HW_OK;
3359
3360         __vxge_hw_fifo_abort(fifo);
3361         status = __vxge_hw_channel_reset(&fifo->channel);
3362
3363         return status;
3364 }
3365
3366 /*
3367  * __vxge_hw_fifo_delete - Removes the FIFO
3368  * This function freeup the memory pool and removes the FIFO
3369  */
3370 static enum vxge_hw_status
3371 __vxge_hw_fifo_delete(struct __vxge_hw_vpath_handle *vp)
3372 {
3373         struct __vxge_hw_fifo *fifo = vp->vpath->fifoh;
3374
3375         __vxge_hw_fifo_abort(fifo);
3376
3377         if (fifo->mempool)
3378                 __vxge_hw_mempool_destroy(fifo->mempool);
3379
3380         vp->vpath->fifoh = NULL;
3381
3382         __vxge_hw_channel_free(&fifo->channel);
3383
3384         return VXGE_HW_OK;
3385 }
3386
3387 /*
3388  * __vxge_hw_fifo_mempool_item_alloc - Allocate List blocks for TxD
3389  * list callback
3390  * This function is callback passed to __vxge_hw_mempool_create to create memory
3391  * pool for TxD list
3392  */
3393 static void
3394 __vxge_hw_fifo_mempool_item_alloc(
3395         struct vxge_hw_mempool *mempoolh,
3396         u32 memblock_index, struct vxge_hw_mempool_dma *dma_object,
3397         u32 index, u32 is_last)
3398 {
3399         u32 memblock_item_idx;
3400         struct __vxge_hw_fifo_txdl_priv *txdl_priv;
3401         struct vxge_hw_fifo_txd *txdp =
3402                 (struct vxge_hw_fifo_txd *)mempoolh->items_arr[index];
3403         struct __vxge_hw_fifo *fifo =
3404                         (struct __vxge_hw_fifo *)mempoolh->userdata;
3405         void *memblock = mempoolh->memblocks_arr[memblock_index];
3406
3407         vxge_assert(txdp);
3408
3409         txdp->host_control = (u64) (size_t)
3410         __vxge_hw_mempool_item_priv(mempoolh, memblock_index, txdp,
3411                                         &memblock_item_idx);
3412
3413         txdl_priv = __vxge_hw_fifo_txdl_priv(fifo, txdp);
3414
3415         vxge_assert(txdl_priv);
3416
3417         fifo->channel.reserve_arr[fifo->channel.reserve_ptr - 1 - index] = txdp;
3418
3419         /* pre-format HW's TxDL's private */
3420         txdl_priv->dma_offset = (char *)txdp - (char *)memblock;
3421         txdl_priv->dma_addr = dma_object->addr + txdl_priv->dma_offset;
3422         txdl_priv->dma_handle = dma_object->handle;
3423         txdl_priv->memblock   = memblock;
3424         txdl_priv->first_txdp = txdp;
3425         txdl_priv->next_txdl_priv = NULL;
3426         txdl_priv->alloc_frags = 0;
3427 }
3428
3429 /*
3430  * __vxge_hw_fifo_create - Create a FIFO
3431  * This function creates FIFO and initializes it.
3432  */
3433 static enum vxge_hw_status
3434 __vxge_hw_fifo_create(struct __vxge_hw_vpath_handle *vp,
3435                       struct vxge_hw_fifo_attr *attr)
3436 {
3437         enum vxge_hw_status status = VXGE_HW_OK;
3438         struct __vxge_hw_fifo *fifo;
3439         struct vxge_hw_fifo_config *config;
3440         u32 txdl_size, txdl_per_memblock;
3441         struct vxge_hw_mempool_cbs fifo_mp_callback;
3442         struct __vxge_hw_virtualpath *vpath;
3443
3444         if ((vp == NULL) || (attr == NULL)) {
3445                 status = VXGE_HW_ERR_INVALID_HANDLE;
3446                 goto exit;
3447         }
3448         vpath = vp->vpath;
3449         config = &vpath->hldev->config.vp_config[vpath->vp_id].fifo;
3450
3451         txdl_size = config->max_frags * sizeof(struct vxge_hw_fifo_txd);
3452
3453         txdl_per_memblock = config->memblock_size / txdl_size;
3454
3455         fifo = (struct __vxge_hw_fifo *)__vxge_hw_channel_allocate(vp,
3456                                         VXGE_HW_CHANNEL_TYPE_FIFO,
3457                                         config->fifo_blocks * txdl_per_memblock,
3458                                         attr->per_txdl_space, attr->userdata);
3459
3460         if (fifo == NULL) {
3461                 status = VXGE_HW_ERR_OUT_OF_MEMORY;
3462                 goto exit;
3463         }
3464
3465         vpath->fifoh = fifo;
3466         fifo->nofl_db = vpath->nofl_db;
3467
3468         fifo->vp_id = vpath->vp_id;
3469         fifo->vp_reg = vpath->vp_reg;
3470         fifo->stats = &vpath->sw_stats->fifo_stats;
3471
3472         fifo->config = config;
3473
3474         /* apply "interrupts per txdl" attribute */
3475         fifo->interrupt_type = VXGE_HW_FIFO_TXD_INT_TYPE_UTILZ;
3476         fifo->tim_tti_cfg1_saved = vpath->tim_tti_cfg1_saved;
3477         fifo->tim_tti_cfg3_saved = vpath->tim_tti_cfg3_saved;
3478
3479         if (fifo->config->intr)
3480                 fifo->interrupt_type = VXGE_HW_FIFO_TXD_INT_TYPE_PER_LIST;
3481
3482         fifo->no_snoop_bits = config->no_snoop_bits;
3483
3484         /*
3485          * FIFO memory management strategy:
3486          *
3487          * TxDL split into three independent parts:
3488          *      - set of TxD's
3489          *      - TxD HW private part
3490          *      - driver private part
3491          *
3492          * Adaptative memory allocation used. i.e. Memory allocated on
3493          * demand with the size which will fit into one memory block.
3494          * One memory block may contain more than one TxDL.
3495          *
3496          * During "reserve" operations more memory can be allocated on demand
3497          * for example due to FIFO full condition.
3498          *
3499          * Pool of memory memblocks never shrinks except in __vxge_hw_fifo_close
3500          * routine which will essentially stop the channel and free resources.
3501          */
3502
3503         /* TxDL common private size == TxDL private  +  driver private */
3504         fifo->priv_size =
3505                 sizeof(struct __vxge_hw_fifo_txdl_priv) + attr->per_txdl_space;
3506         fifo->priv_size = ((fifo->priv_size  +  VXGE_CACHE_LINE_SIZE - 1) /
3507                         VXGE_CACHE_LINE_SIZE) * VXGE_CACHE_LINE_SIZE;
3508
3509         fifo->per_txdl_space = attr->per_txdl_space;
3510
3511         /* recompute txdl size to be cacheline aligned */
3512         fifo->txdl_size = txdl_size;
3513         fifo->txdl_per_memblock = txdl_per_memblock;
3514
3515         fifo->txdl_term = attr->txdl_term;
3516         fifo->callback = attr->callback;
3517
3518         if (fifo->txdl_per_memblock == 0) {
3519                 __vxge_hw_fifo_delete(vp);
3520                 status = VXGE_HW_ERR_INVALID_BLOCK_SIZE;
3521                 goto exit;
3522         }
3523
3524         fifo_mp_callback.item_func_alloc = __vxge_hw_fifo_mempool_item_alloc;
3525
3526         fifo->mempool =
3527                 __vxge_hw_mempool_create(vpath->hldev,
3528                         fifo->config->memblock_size,
3529                         fifo->txdl_size,
3530                         fifo->priv_size,
3531                         (fifo->config->fifo_blocks * fifo->txdl_per_memblock),
3532                         (fifo->config->fifo_blocks * fifo->txdl_per_memblock),
3533                         &fifo_mp_callback,
3534                         fifo);
3535
3536         if (fifo->mempool == NULL) {
3537                 __vxge_hw_fifo_delete(vp);
3538                 status = VXGE_HW_ERR_OUT_OF_MEMORY;
3539                 goto exit;
3540         }
3541
3542         status = __vxge_hw_channel_initialize(&fifo->channel);
3543         if (status != VXGE_HW_OK) {
3544                 __vxge_hw_fifo_delete(vp);
3545                 goto exit;
3546         }
3547
3548         vxge_assert(fifo->channel.reserve_ptr);
3549 exit:
3550         return status;
3551 }
3552
3553 /*
3554  * __vxge_hw_vpath_pci_read - Read the content of given address
3555  *                          in pci config space.
3556  * Read from the vpath pci config space.
3557  */
3558 static enum vxge_hw_status
3559 __vxge_hw_vpath_pci_read(struct __vxge_hw_virtualpath *vpath,
3560                          u32 phy_func_0, u32 offset, u32 *val)
3561 {
3562         u64 val64;
3563         enum vxge_hw_status status = VXGE_HW_OK;
3564         struct vxge_hw_vpath_reg __iomem *vp_reg = vpath->vp_reg;
3565
3566         val64 = VXGE_HW_PCI_CONFIG_ACCESS_CFG1_ADDRESS(offset);
3567
3568         if (phy_func_0)
3569                 val64 |= VXGE_HW_PCI_CONFIG_ACCESS_CFG1_SEL_FUNC0;
3570
3571         writeq(val64, &vp_reg->pci_config_access_cfg1);
3572         wmb();
3573         writeq(VXGE_HW_PCI_CONFIG_ACCESS_CFG2_REQ,
3574                         &vp_reg->pci_config_access_cfg2);
3575         wmb();
3576
3577         status = __vxge_hw_device_register_poll(
3578                         &vp_reg->pci_config_access_cfg2,
3579                         VXGE_HW_INTR_MASK_ALL, VXGE_HW_DEF_DEVICE_POLL_MILLIS);
3580
3581         if (status != VXGE_HW_OK)
3582                 goto exit;
3583
3584         val64 = readq(&vp_reg->pci_config_access_status);
3585
3586         if (val64 & VXGE_HW_PCI_CONFIG_ACCESS_STATUS_ACCESS_ERR) {
3587                 status = VXGE_HW_FAIL;
3588                 *val = 0;
3589         } else
3590                 *val = (u32)vxge_bVALn(val64, 32, 32);
3591 exit:
3592         return status;
3593 }
3594
3595 /**
3596  * vxge_hw_device_flick_link_led - Flick (blink) link LED.
3597  * @hldev: HW device.
3598  * @on_off: TRUE if flickering to be on, FALSE to be off
3599  *
3600  * Flicker the link LED.
3601  */
3602 enum vxge_hw_status
3603 vxge_hw_device_flick_link_led(struct __vxge_hw_device *hldev, u64 on_off)
3604 {
3605         struct __vxge_hw_virtualpath *vpath;
3606         u64 data0, data1 = 0, steer_ctrl = 0;
3607         enum vxge_hw_status status;
3608
3609         if (hldev == NULL) {
3610                 status = VXGE_HW_ERR_INVALID_DEVICE;
3611                 goto exit;
3612         }
3613
3614         vpath = &hldev->virtual_paths[hldev->first_vp_id];
3615
3616         data0 = on_off;
3617         status = vxge_hw_vpath_fw_api(vpath,
3618                         VXGE_HW_RTS_ACCESS_STEER_CTRL_ACTION_LED_CONTROL,
3619                         VXGE_HW_RTS_ACCESS_STEER_CTRL_DATA_STRUCT_SEL_FW_MEMO,
3620                         0, &data0, &data1, &steer_ctrl);
3621 exit:
3622         return status;
3623 }
3624
3625 /*
3626  * __vxge_hw_vpath_rts_table_get - Get the entries from RTS access tables
3627  */
3628 enum vxge_hw_status
3629 __vxge_hw_vpath_rts_table_get(struct __vxge_hw_vpath_handle *vp,
3630                               u32 action, u32 rts_table, u32 offset,
3631                               u64 *data0, u64 *data1)
3632 {
3633         enum vxge_hw_status status;
3634         u64 steer_ctrl = 0;
3635
3636         if (vp == NULL) {
3637                 status = VXGE_HW_ERR_INVALID_HANDLE;
3638                 goto exit;
3639         }
3640
3641         if ((rts_table ==
3642              VXGE_HW_RTS_ACS_STEER_CTRL_DATA_STRUCT_SEL_RTH_SOLO_IT) ||
3643             (rts_table ==
3644              VXGE_HW_RTS_ACS_STEER_CTRL_DATA_STRUCT_SEL_RTH_MULTI_IT) ||
3645             (rts_table ==
3646              VXGE_HW_RTS_ACCESS_STEER_CTRL_DATA_STRUCT_SEL_RTH_MASK) ||
3647             (rts_table ==
3648              VXGE_HW_RTS_ACCESS_STEER_CTRL_DATA_STRUCT_SEL_RTH_KEY)) {
3649                 steer_ctrl = VXGE_HW_RTS_ACCESS_STEER_CTRL_TABLE_SEL;
3650         }
3651
3652         status = vxge_hw_vpath_fw_api(vp->vpath, action, rts_table, offset,
3653                                       data0, data1, &steer_ctrl);
3654         if (status != VXGE_HW_OK)
3655                 goto exit;
3656
3657         if ((rts_table != VXGE_HW_RTS_ACCESS_STEER_CTRL_DATA_STRUCT_SEL_DA) &&
3658             (rts_table !=
3659              VXGE_HW_RTS_ACS_STEER_CTRL_DATA_STRUCT_SEL_RTH_MULTI_IT))
3660                 *data1 = 0;
3661 exit:
3662         return status;
3663 }
3664
3665 /*
3666  * __vxge_hw_vpath_rts_table_set - Set the entries of RTS access tables
3667  */
3668 enum vxge_hw_status
3669 __vxge_hw_vpath_rts_table_set(struct __vxge_hw_vpath_handle *vp, u32 action,
3670                               u32 rts_table, u32 offset, u64 steer_data0,
3671                               u64 steer_data1)
3672 {
3673         u64 data0, data1 = 0, steer_ctrl = 0;
3674         enum vxge_hw_status status;
3675
3676         if (vp == NULL) {
3677                 status = VXGE_HW_ERR_INVALID_HANDLE;
3678                 goto exit;
3679         }
3680
3681         data0 = steer_data0;
3682
3683         if ((rts_table == VXGE_HW_RTS_ACCESS_STEER_CTRL_DATA_STRUCT_SEL_DA) ||
3684             (rts_table ==
3685              VXGE_HW_RTS_ACS_STEER_CTRL_DATA_STRUCT_SEL_RTH_MULTI_IT))
3686                 data1 = steer_data1;
3687
3688         status = vxge_hw_vpath_fw_api(vp->vpath, action, rts_table, offset,
3689                                       &data0, &data1, &steer_ctrl);
3690 exit:
3691         return status;
3692 }
3693
3694 /*
3695  * vxge_hw_vpath_rts_rth_set - Set/configure RTS hashing.
3696  */
3697 enum vxge_hw_status vxge_hw_vpath_rts_rth_set(
3698                         struct __vxge_hw_vpath_handle *vp,
3699                         enum vxge_hw_rth_algoritms algorithm,
3700                         struct vxge_hw_rth_hash_types *hash_type,
3701                         u16 bucket_size)
3702 {
3703         u64 data0, data1;
3704         enum vxge_hw_status status = VXGE_HW_OK;
3705
3706         if (vp == NULL) {
3707                 status = VXGE_HW_ERR_INVALID_HANDLE;
3708                 goto exit;
3709         }
3710
3711         status = __vxge_hw_vpath_rts_table_get(vp,
3712                      VXGE_HW_RTS_ACCESS_STEER_CTRL_ACTION_READ_ENTRY,
3713                      VXGE_HW_RTS_ACCESS_STEER_CTRL_DATA_STRUCT_SEL_RTH_GEN_CFG,
3714                         0, &data0, &data1);
3715         if (status != VXGE_HW_OK)
3716                 goto exit;
3717
3718         data0 &= ~(VXGE_HW_RTS_ACCESS_STEER_DATA0_RTH_GEN_BUCKET_SIZE(0xf) |
3719                         VXGE_HW_RTS_ACCESS_STEER_DATA0_RTH_GEN_ALG_SEL(0x3));
3720
3721         data0 |= VXGE_HW_RTS_ACCESS_STEER_DATA0_RTH_GEN_RTH_EN |
3722         VXGE_HW_RTS_ACCESS_STEER_DATA0_RTH_GEN_BUCKET_SIZE(bucket_size) |
3723         VXGE_HW_RTS_ACCESS_STEER_DATA0_RTH_GEN_ALG_SEL(algorithm);
3724
3725         if (hash_type->hash_type_tcpipv4_en)
3726                 data0 |= VXGE_HW_RTS_ACCESS_STEER_DATA0_RTH_GEN_RTH_TCP_IPV4_EN;
3727
3728         if (hash_type->hash_type_ipv4_en)
3729                 data0 |= VXGE_HW_RTS_ACCESS_STEER_DATA0_RTH_GEN_RTH_IPV4_EN;
3730
3731         if (hash_type->hash_type_tcpipv6_en)
3732                 data0 |= VXGE_HW_RTS_ACCESS_STEER_DATA0_RTH_GEN_RTH_TCP_IPV6_EN;
3733
3734         if (hash_type->hash_type_ipv6_en)
3735                 data0 |= VXGE_HW_RTS_ACCESS_STEER_DATA0_RTH_GEN_RTH_IPV6_EN;
3736
3737         if (hash_type->hash_type_tcpipv6ex_en)
3738                 data0 |=
3739                 VXGE_HW_RTS_ACCESS_STEER_DATA0_RTH_GEN_RTH_TCP_IPV6_EX_EN;
3740
3741         if (hash_type->hash_type_ipv6ex_en)
3742                 data0 |= VXGE_HW_RTS_ACCESS_STEER_DATA0_RTH_GEN_RTH_IPV6_EX_EN;
3743
3744         if (VXGE_HW_RTS_ACCESS_STEER_DATA0_GET_RTH_GEN_ACTIVE_TABLE(data0))
3745                 data0 &= ~VXGE_HW_RTS_ACCESS_STEER_DATA0_RTH_GEN_ACTIVE_TABLE;
3746         else
3747                 data0 |= VXGE_HW_RTS_ACCESS_STEER_DATA0_RTH_GEN_ACTIVE_TABLE;
3748
3749         status = __vxge_hw_vpath_rts_table_set(vp,
3750                 VXGE_HW_RTS_ACCESS_STEER_CTRL_ACTION_WRITE_ENTRY,
3751                 VXGE_HW_RTS_ACCESS_STEER_CTRL_DATA_STRUCT_SEL_RTH_GEN_CFG,
3752                 0, data0, 0);
3753 exit:
3754         return status;
3755 }
3756
3757 static void
3758 vxge_hw_rts_rth_data0_data1_get(u32 j, u64 *data0, u64 *data1,
3759                                 u16 flag, u8 *itable)
3760 {
3761         switch (flag) {
3762         case 1:
3763                 *data0 = VXGE_HW_RTS_ACCESS_STEER_DATA0_RTH_ITEM0_BUCKET_NUM(j)|
3764                         VXGE_HW_RTS_ACCESS_STEER_DATA0_RTH_ITEM0_ENTRY_EN |
3765                         VXGE_HW_RTS_ACCESS_STEER_DATA0_RTH_ITEM0_BUCKET_DATA(
3766                         itable[j]);
3767                 fallthrough;
3768         case 2:
3769                 *data0 |=
3770                         VXGE_HW_RTS_ACCESS_STEER_DATA0_RTH_ITEM1_BUCKET_NUM(j)|
3771                         VXGE_HW_RTS_ACCESS_STEER_DATA0_RTH_ITEM1_ENTRY_EN |
3772                         VXGE_HW_RTS_ACCESS_STEER_DATA0_RTH_ITEM1_BUCKET_DATA(
3773                         itable[j]);
3774                 fallthrough;
3775         case 3:
3776                 *data1 = VXGE_HW_RTS_ACCESS_STEER_DATA1_RTH_ITEM0_BUCKET_NUM(j)|
3777                         VXGE_HW_RTS_ACCESS_STEER_DATA1_RTH_ITEM0_ENTRY_EN |
3778                         VXGE_HW_RTS_ACCESS_STEER_DATA1_RTH_ITEM0_BUCKET_DATA(
3779                         itable[j]);
3780                 fallthrough;
3781         case 4:
3782                 *data1 |=
3783                         VXGE_HW_RTS_ACCESS_STEER_DATA1_RTH_ITEM1_BUCKET_NUM(j)|
3784                         VXGE_HW_RTS_ACCESS_STEER_DATA1_RTH_ITEM1_ENTRY_EN |
3785                         VXGE_HW_RTS_ACCESS_STEER_DATA1_RTH_ITEM1_BUCKET_DATA(
3786                         itable[j]);
3787         default:
3788                 return;
3789         }
3790 }
3791 /*
3792  * vxge_hw_vpath_rts_rth_itable_set - Set/configure indirection table (IT).
3793  */
3794 enum vxge_hw_status vxge_hw_vpath_rts_rth_itable_set(
3795                         struct __vxge_hw_vpath_handle **vpath_handles,
3796                         u32 vpath_count,
3797                         u8 *mtable,
3798                         u8 *itable,
3799                         u32 itable_size)
3800 {
3801         u32 i, j, action, rts_table;
3802         u64 data0;
3803         u64 data1;
3804         u32 max_entries;
3805         enum vxge_hw_status status = VXGE_HW_OK;
3806         struct __vxge_hw_vpath_handle *vp = vpath_handles[0];
3807
3808         if (vp == NULL) {
3809                 status = VXGE_HW_ERR_INVALID_HANDLE;
3810                 goto exit;
3811         }
3812
3813         max_entries = (((u32)1) << itable_size);
3814
3815         if (vp->vpath->hldev->config.rth_it_type
3816                                 == VXGE_HW_RTH_IT_TYPE_SOLO_IT) {
3817                 action = VXGE_HW_RTS_ACCESS_STEER_CTRL_ACTION_WRITE_ENTRY;
3818                 rts_table =
3819                         VXGE_HW_RTS_ACS_STEER_CTRL_DATA_STRUCT_SEL_RTH_SOLO_IT;
3820
3821                 for (j = 0; j < max_entries; j++) {
3822
3823                         data1 = 0;
3824
3825                         data0 =
3826                         VXGE_HW_RTS_ACCESS_STEER_DATA0_RTH_SOLO_IT_BUCKET_DATA(
3827                                 itable[j]);
3828
3829                         status = __vxge_hw_vpath_rts_table_set(vpath_handles[0],
3830                                 action, rts_table, j, data0, data1);
3831
3832                         if (status != VXGE_HW_OK)
3833                                 goto exit;
3834                 }
3835
3836                 for (j = 0; j < max_entries; j++) {
3837
3838                         data1 = 0;
3839
3840                         data0 =
3841                         VXGE_HW_RTS_ACCESS_STEER_DATA0_RTH_SOLO_IT_ENTRY_EN |
3842                         VXGE_HW_RTS_ACCESS_STEER_DATA0_RTH_SOLO_IT_BUCKET_DATA(
3843                                 itable[j]);
3844
3845                         status = __vxge_hw_vpath_rts_table_set(
3846                                 vpath_handles[mtable[itable[j]]], action,
3847                                 rts_table, j, data0, data1);
3848
3849                         if (status != VXGE_HW_OK)
3850                                 goto exit;
3851                 }
3852         } else {
3853                 action = VXGE_HW_RTS_ACCESS_STEER_CTRL_ACTION_WRITE_ENTRY;
3854                 rts_table =
3855                         VXGE_HW_RTS_ACS_STEER_CTRL_DATA_STRUCT_SEL_RTH_MULTI_IT;
3856                 for (i = 0; i < vpath_count; i++) {
3857
3858                         for (j = 0; j < max_entries;) {
3859
3860                                 data0 = 0;
3861                                 data1 = 0;
3862
3863                                 while (j < max_entries) {
3864                                         if (mtable[itable[j]] != i) {
3865                                                 j++;
3866                                                 continue;
3867                                         }
3868                                         vxge_hw_rts_rth_data0_data1_get(j,
3869                                                 &data0, &data1, 1, itable);
3870                                         j++;
3871                                         break;
3872                                 }
3873
3874                                 while (j < max_entries) {
3875                                         if (mtable[itable[j]] != i) {
3876                                                 j++;
3877                                                 continue;
3878                                         }
3879                                         vxge_hw_rts_rth_data0_data1_get(j,
3880                                                 &data0, &data1, 2, itable);
3881                                         j++;
3882                                         break;
3883                                 }
3884
3885                                 while (j < max_entries) {
3886                                         if (mtable[itable[j]] != i) {
3887                                                 j++;
3888                                                 continue;
3889                                         }
3890                                         vxge_hw_rts_rth_data0_data1_get(j,
3891                                                 &data0, &data1, 3, itable);
3892                                         j++;
3893                                         break;
3894                                 }
3895
3896                                 while (j < max_entries) {
3897                                         if (mtable[itable[j]] != i) {
3898                                                 j++;
3899                                                 continue;
3900                                         }
3901                                         vxge_hw_rts_rth_data0_data1_get(j,
3902                                                 &data0, &data1, 4, itable);
3903                                         j++;
3904                                         break;
3905                                 }
3906
3907                                 if (data0 != 0) {
3908                                         status = __vxge_hw_vpath_rts_table_set(
3909                                                         vpath_handles[i],
3910                                                         action, rts_table,
3911                                                         0, data0, data1);
3912
3913                                         if (status != VXGE_HW_OK)
3914                                                 goto exit;
3915                                 }
3916                         }
3917                 }
3918         }
3919 exit:
3920         return status;
3921 }
3922
3923 /**
3924  * vxge_hw_vpath_check_leak - Check for memory leak
3925  * @ring: Handle to the ring object used for receive
3926  *
3927  * If PRC_RXD_DOORBELL_VPn.NEW_QW_CNT is larger or equal to
3928  * PRC_CFG6_VPn.RXD_SPAT then a leak has occurred.
3929  * Returns: VXGE_HW_FAIL, if leak has occurred.
3930  *
3931  */
3932 enum vxge_hw_status
3933 vxge_hw_vpath_check_leak(struct __vxge_hw_ring *ring)
3934 {
3935         enum vxge_hw_status status = VXGE_HW_OK;
3936         u64 rxd_new_count, rxd_spat;
3937
3938         if (ring == NULL)
3939                 return status;
3940
3941         rxd_new_count = readl(&ring->vp_reg->prc_rxd_doorbell);
3942         rxd_spat = readq(&ring->vp_reg->prc_cfg6);
3943         rxd_spat = VXGE_HW_PRC_CFG6_RXD_SPAT(rxd_spat);
3944
3945         if (rxd_new_count >= rxd_spat)
3946                 status = VXGE_HW_FAIL;
3947
3948         return status;
3949 }
3950
3951 /*
3952  * __vxge_hw_vpath_mgmt_read
3953  * This routine reads the vpath_mgmt registers
3954  */
3955 static enum vxge_hw_status
3956 __vxge_hw_vpath_mgmt_read(
3957         struct __vxge_hw_device *hldev,
3958         struct __vxge_hw_virtualpath *vpath)
3959 {
3960         u32 i, mtu = 0, max_pyld = 0;
3961         u64 val64;
3962
3963         for (i = 0; i < VXGE_HW_MAC_MAX_MAC_PORT_ID; i++) {
3964
3965                 val64 = readq(&vpath->vpmgmt_reg->
3966                                 rxmac_cfg0_port_vpmgmt_clone[i]);
3967                 max_pyld =
3968                         (u32)
3969                         VXGE_HW_RXMAC_CFG0_PORT_VPMGMT_CLONE_GET_MAX_PYLD_LEN
3970                         (val64);
3971                 if (mtu < max_pyld)
3972                         mtu = max_pyld;
3973         }
3974
3975         vpath->max_mtu = mtu + VXGE_HW_MAC_HEADER_MAX_SIZE;
3976
3977         val64 = readq(&vpath->vpmgmt_reg->xmac_vsport_choices_vp);
3978
3979         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3980                 if (val64 & vxge_mBIT(i))
3981                         vpath->vsport_number = i;
3982         }
3983
3984         val64 = readq(&vpath->vpmgmt_reg->xgmac_gen_status_vpmgmt_clone);
3985
3986         if (val64 & VXGE_HW_XGMAC_GEN_STATUS_VPMGMT_CLONE_XMACJ_NTWK_OK)
3987                 VXGE_HW_DEVICE_LINK_STATE_SET(vpath->hldev, VXGE_HW_LINK_UP);
3988         else
3989                 VXGE_HW_DEVICE_LINK_STATE_SET(vpath->hldev, VXGE_HW_LINK_DOWN);
3990
3991         return VXGE_HW_OK;
3992 }
3993
3994 /*
3995  * __vxge_hw_vpath_reset_check - Check if resetting the vpath completed
3996  * This routine checks the vpath_rst_in_prog register to see if
3997  * adapter completed the reset process for the vpath
3998  */
3999 static enum vxge_hw_status
4000 __vxge_hw_vpath_reset_check(struct __vxge_hw_virtualpath *vpath)
4001 {
4002         enum vxge_hw_status status;
4003
4004         status = __vxge_hw_device_register_poll(
4005                         &vpath->hldev->common_reg->vpath_rst_in_prog,
4006                         VXGE_HW_VPATH_RST_IN_PROG_VPATH_RST_IN_PROG(
4007                                 1 << (16 - vpath->vp_id)),
4008                         vpath->hldev->config.device_poll_millis);
4009
4010         return status;
4011 }
4012
4013 /*
4014  * __vxge_hw_vpath_reset
4015  * This routine resets the vpath on the device
4016  */
4017 static enum vxge_hw_status
4018 __vxge_hw_vpath_reset(struct __vxge_hw_device *hldev, u32 vp_id)
4019 {
4020         u64 val64;
4021
4022         val64 = VXGE_HW_CMN_RSTHDLR_CFG0_SW_RESET_VPATH(1 << (16 - vp_id));
4023
4024         __vxge_hw_pio_mem_write32_upper((u32)vxge_bVALn(val64, 0, 32),
4025                                 &hldev->common_reg->cmn_rsthdlr_cfg0);
4026
4027         return VXGE_HW_OK;
4028 }
4029
4030 /*
4031  * __vxge_hw_vpath_sw_reset
4032  * This routine resets the vpath structures
4033  */
4034 static enum vxge_hw_status
4035 __vxge_hw_vpath_sw_reset(struct __vxge_hw_device *hldev, u32 vp_id)
4036 {
4037         enum vxge_hw_status status = VXGE_HW_OK;
4038         struct __vxge_hw_virtualpath *vpath;
4039
4040         vpath = &hldev->virtual_paths[vp_id];
4041
4042         if (vpath->ringh) {
4043                 status = __vxge_hw_ring_reset(vpath->ringh);
4044                 if (status != VXGE_HW_OK)
4045                         goto exit;
4046         }
4047
4048         if (vpath->fifoh)
4049                 status = __vxge_hw_fifo_reset(vpath->fifoh);
4050 exit:
4051         return status;
4052 }
4053
4054 /*
4055  * __vxge_hw_vpath_prc_configure
4056  * This routine configures the prc registers of virtual path using the config
4057  * passed
4058  */
4059 static void
4060 __vxge_hw_vpath_prc_configure(struct __vxge_hw_device *hldev, u32 vp_id)
4061 {
4062         u64 val64;
4063         struct __vxge_hw_virtualpath *vpath;
4064         struct vxge_hw_vp_config *vp_config;
4065         struct vxge_hw_vpath_reg __iomem *vp_reg;
4066
4067         vpath = &hldev->virtual_paths[vp_id];
4068         vp_reg = vpath->vp_reg;
4069         vp_config = vpath->vp_config;
4070
4071         if (vp_config->ring.enable == VXGE_HW_RING_DISABLE)
4072                 return;
4073
4074         val64 = readq(&vp_reg->prc_cfg1);
4075         val64 |= VXGE_HW_PRC_CFG1_RTI_TINT_DISABLE;
4076         writeq(val64, &vp_reg->prc_cfg1);
4077
4078         val64 = readq(&vpath->vp_reg->prc_cfg6);
4079         val64 |= VXGE_HW_PRC_CFG6_DOORBELL_MODE_EN;
4080         writeq(val64, &vpath->vp_reg->prc_cfg6);
4081
4082         val64 = readq(&vp_reg->prc_cfg7);
4083
4084         if (vpath->vp_config->ring.scatter_mode !=
4085                 VXGE_HW_RING_SCATTER_MODE_USE_FLASH_DEFAULT) {
4086
4087                 val64 &= ~VXGE_HW_PRC_CFG7_SCATTER_MODE(0x3);
4088
4089                 switch (vpath->vp_config->ring.scatter_mode) {
4090                 case VXGE_HW_RING_SCATTER_MODE_A:
4091                         val64 |= VXGE_HW_PRC_CFG7_SCATTER_MODE(
4092                                         VXGE_HW_PRC_CFG7_SCATTER_MODE_A);
4093                         break;
4094                 case VXGE_HW_RING_SCATTER_MODE_B:
4095                         val64 |= VXGE_HW_PRC_CFG7_SCATTER_MODE(
4096                                         VXGE_HW_PRC_CFG7_SCATTER_MODE_B);
4097                         break;
4098                 case VXGE_HW_RING_SCATTER_MODE_C:
4099                         val64 |= VXGE_HW_PRC_CFG7_SCATTER_MODE(
4100                                         VXGE_HW_PRC_CFG7_SCATTER_MODE_C);
4101                         break;
4102                 }
4103         }
4104
4105         writeq(val64, &vp_reg->prc_cfg7);
4106
4107         writeq(VXGE_HW_PRC_CFG5_RXD0_ADD(
4108                                 __vxge_hw_ring_first_block_address_get(
4109                                         vpath->ringh) >> 3), &vp_reg->prc_cfg5);
4110
4111         val64 = readq(&vp_reg->prc_cfg4);
4112         val64 |= VXGE_HW_PRC_CFG4_IN_SVC;
4113         val64 &= ~VXGE_HW_PRC_CFG4_RING_MODE(0x3);
4114
4115         val64 |= VXGE_HW_PRC_CFG4_RING_MODE(
4116                         VXGE_HW_PRC_CFG4_RING_MODE_ONE_BUFFER);
4117
4118         if (hldev->config.rth_en == VXGE_HW_RTH_DISABLE)
4119                 val64 |= VXGE_HW_PRC_CFG4_RTH_DISABLE;
4120         else
4121                 val64 &= ~VXGE_HW_PRC_CFG4_RTH_DISABLE;
4122
4123         writeq(val64, &vp_reg->prc_cfg4);
4124 }
4125
4126 /*
4127  * __vxge_hw_vpath_kdfc_configure
4128  * This routine configures the kdfc registers of virtual path using the
4129  * config passed
4130  */
4131 static enum vxge_hw_status
4132 __vxge_hw_vpath_kdfc_configure(struct __vxge_hw_device *hldev, u32 vp_id)
4133 {
4134         u64 val64;
4135         u64 vpath_stride;
4136         enum vxge_hw_status status = VXGE_HW_OK;
4137         struct __vxge_hw_virtualpath *vpath;
4138         struct vxge_hw_vpath_reg __iomem *vp_reg;
4139
4140         vpath = &hldev->virtual_paths[vp_id];
4141         vp_reg = vpath->vp_reg;
4142         status = __vxge_hw_kdfc_swapper_set(hldev->legacy_reg, vp_reg);
4143
4144         if (status != VXGE_HW_OK)
4145                 goto exit;
4146
4147         val64 = readq(&vp_reg->kdfc_drbl_triplet_total);
4148
4149         vpath->max_kdfc_db =
4150                 (u32)VXGE_HW_KDFC_DRBL_TRIPLET_TOTAL_GET_KDFC_MAX_SIZE(
4151                         val64+1)/2;
4152
4153         if (vpath->vp_config->fifo.enable == VXGE_HW_FIFO_ENABLE) {
4154
4155                 vpath->max_nofl_db = vpath->max_kdfc_db;
4156
4157                 if (vpath->max_nofl_db <
4158                         ((vpath->vp_config->fifo.memblock_size /
4159                         (vpath->vp_config->fifo.max_frags *
4160                         sizeof(struct vxge_hw_fifo_txd))) *
4161                         vpath->vp_config->fifo.fifo_blocks)) {
4162
4163                         return VXGE_HW_BADCFG_FIFO_BLOCKS;
4164                 }
4165                 val64 = VXGE_HW_KDFC_FIFO_TRPL_PARTITION_LENGTH_0(
4166                                 (vpath->max_nofl_db*2)-1);
4167         }
4168
4169         writeq(val64, &vp_reg->kdfc_fifo_trpl_partition);
4170
4171         writeq(VXGE_HW_KDFC_FIFO_TRPL_CTRL_TRIPLET_ENABLE,
4172                 &vp_reg->kdfc_fifo_trpl_ctrl);
4173
4174         val64 = readq(&vp_reg->kdfc_trpl_fifo_0_ctrl);
4175
4176         val64 &= ~(VXGE_HW_KDFC_TRPL_FIFO_0_CTRL_MODE(0x3) |
4177                    VXGE_HW_KDFC_TRPL_FIFO_0_CTRL_SELECT(0xFF));
4178
4179         val64 |= VXGE_HW_KDFC_TRPL_FIFO_0_CTRL_MODE(
4180                  VXGE_HW_KDFC_TRPL_FIFO_0_CTRL_MODE_NON_OFFLOAD_ONLY) |
4181 #ifndef __BIG_ENDIAN
4182                  VXGE_HW_KDFC_TRPL_FIFO_0_CTRL_SWAP_EN |
4183 #endif
4184                  VXGE_HW_KDFC_TRPL_FIFO_0_CTRL_SELECT(0);
4185
4186         writeq(val64, &vp_reg->kdfc_trpl_fifo_0_ctrl);
4187         writeq((u64)0, &vp_reg->kdfc_trpl_fifo_0_wb_address);
4188         wmb();
4189         vpath_stride = readq(&hldev->toc_reg->toc_kdfc_vpath_stride);
4190
4191         vpath->nofl_db =
4192                 (struct __vxge_hw_non_offload_db_wrapper __iomem *)
4193                 (hldev->kdfc + (vp_id *
4194                 VXGE_HW_TOC_KDFC_VPATH_STRIDE_GET_TOC_KDFC_VPATH_STRIDE(
4195                                         vpath_stride)));
4196 exit:
4197         return status;
4198 }
4199
4200 /*
4201  * __vxge_hw_vpath_mac_configure
4202  * This routine configures the mac of virtual path using the config passed
4203  */
4204 static enum vxge_hw_status
4205 __vxge_hw_vpath_mac_configure(struct __vxge_hw_device *hldev, u32 vp_id)
4206 {
4207         u64 val64;
4208         struct __vxge_hw_virtualpath *vpath;
4209         struct vxge_hw_vp_config *vp_config;
4210         struct vxge_hw_vpath_reg __iomem *vp_reg;
4211
4212         vpath = &hldev->virtual_paths[vp_id];
4213         vp_reg = vpath->vp_reg;
4214         vp_config = vpath->vp_config;
4215
4216         writeq(VXGE_HW_XMAC_VSPORT_CHOICE_VSPORT_NUMBER(
4217                         vpath->vsport_number), &vp_reg->xmac_vsport_choice);
4218
4219         if (vp_config->ring.enable == VXGE_HW_RING_ENABLE) {
4220
4221                 val64 = readq(&vp_reg->xmac_rpa_vcfg);
4222
4223                 if (vp_config->rpa_strip_vlan_tag !=
4224                         VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_USE_FLASH_DEFAULT) {
4225                         if (vp_config->rpa_strip_vlan_tag)
4226                                 val64 |= VXGE_HW_XMAC_RPA_VCFG_STRIP_VLAN_TAG;
4227                         else
4228                                 val64 &= ~VXGE_HW_XMAC_RPA_VCFG_STRIP_VLAN_TAG;
4229                 }
4230
4231                 writeq(val64, &vp_reg->xmac_rpa_vcfg);
4232                 val64 = readq(&vp_reg->rxmac_vcfg0);
4233
4234                 if (vp_config->mtu !=
4235                                 VXGE_HW_VPATH_USE_FLASH_DEFAULT_INITIAL_MTU) {
4236                         val64 &= ~VXGE_HW_RXMAC_VCFG0_RTS_MAX_FRM_LEN(0x3fff);
4237                         if ((vp_config->mtu  +
4238                                 VXGE_HW_MAC_HEADER_MAX_SIZE) < vpath->max_mtu)
4239                                 val64 |= VXGE_HW_RXMAC_VCFG0_RTS_MAX_FRM_LEN(
4240                                         vp_config->mtu  +
4241                                         VXGE_HW_MAC_HEADER_MAX_SIZE);
4242                         else
4243                                 val64 |= VXGE_HW_RXMAC_VCFG0_RTS_MAX_FRM_LEN(
4244                                         vpath->max_mtu);
4245                 }
4246
4247                 writeq(val64, &vp_reg->rxmac_vcfg0);
4248
4249                 val64 = readq(&vp_reg->rxmac_vcfg1);
4250
4251                 val64 &= ~(VXGE_HW_RXMAC_VCFG1_RTS_RTH_MULTI_IT_BD_MODE(0x3) |
4252                         VXGE_HW_RXMAC_VCFG1_RTS_RTH_MULTI_IT_EN_MODE);
4253
4254                 if (hldev->config.rth_it_type ==
4255                                 VXGE_HW_RTH_IT_TYPE_MULTI_IT) {
4256                         val64 |= VXGE_HW_RXMAC_VCFG1_RTS_RTH_MULTI_IT_BD_MODE(
4257                                 0x2) |
4258                                 VXGE_HW_RXMAC_VCFG1_RTS_RTH_MULTI_IT_EN_MODE;
4259                 }
4260
4261                 writeq(val64, &vp_reg->rxmac_vcfg1);
4262         }
4263         return VXGE_HW_OK;
4264 }
4265
4266 /*
4267  * __vxge_hw_vpath_tim_configure
4268  * This routine configures the tim registers of virtual path using the config
4269  * passed
4270  */
4271 static enum vxge_hw_status
4272 __vxge_hw_vpath_tim_configure(struct __vxge_hw_device *hldev, u32 vp_id)
4273 {
4274         u64 val64;
4275         struct __vxge_hw_virtualpath *vpath;
4276         struct vxge_hw_vpath_reg __iomem *vp_reg;
4277         struct vxge_hw_vp_config *config;
4278
4279         vpath = &hldev->virtual_paths[vp_id];
4280         vp_reg = vpath->vp_reg;
4281         config = vpath->vp_config;
4282
4283         writeq(0, &vp_reg->tim_dest_addr);
4284         writeq(0, &vp_reg->tim_vpath_map);
4285         writeq(0, &vp_reg->tim_bitmap);
4286         writeq(0, &vp_reg->tim_remap);
4287
4288         if (config->ring.enable == VXGE_HW_RING_ENABLE)
4289                 writeq(VXGE_HW_TIM_RING_ASSN_INT_NUM(
4290                         (vp_id * VXGE_HW_MAX_INTR_PER_VP) +
4291                         VXGE_HW_VPATH_INTR_RX), &vp_reg->tim_ring_assn);
4292
4293         val64 = readq(&vp_reg->tim_pci_cfg);
4294         val64 |= VXGE_HW_TIM_PCI_CFG_ADD_PAD;
4295         writeq(val64, &vp_reg->tim_pci_cfg);
4296
4297         if (config->fifo.enable == VXGE_HW_FIFO_ENABLE) {
4298
4299                 val64 = readq(&vp_reg->tim_cfg1_int_num[VXGE_HW_VPATH_INTR_TX]);
4300
4301                 if (config->tti.btimer_val != VXGE_HW_USE_FLASH_DEFAULT) {
4302                         val64 &= ~VXGE_HW_TIM_CFG1_INT_NUM_BTIMER_VAL(
4303                                 0x3ffffff);
4304                         val64 |= VXGE_HW_TIM_CFG1_INT_NUM_BTIMER_VAL(
4305                                         config->tti.btimer_val);
4306                 }
4307
4308                 val64 &= ~VXGE_HW_TIM_CFG1_INT_NUM_BITMP_EN;
4309
4310                 if (config->tti.timer_ac_en != VXGE_HW_USE_FLASH_DEFAULT) {
4311                         if (config->tti.timer_ac_en)
4312                                 val64 |= VXGE_HW_TIM_CFG1_INT_NUM_TIMER_AC;
4313                         else
4314                                 val64 &= ~VXGE_HW_TIM_CFG1_INT_NUM_TIMER_AC;
4315                 }
4316
4317                 if (config->tti.timer_ci_en != VXGE_HW_USE_FLASH_DEFAULT) {
4318                         if (config->tti.timer_ci_en)
4319                                 val64 |= VXGE_HW_TIM_CFG1_INT_NUM_TIMER_CI;
4320                         else
4321                                 val64 &= ~VXGE_HW_TIM_CFG1_INT_NUM_TIMER_CI;
4322                 }
4323
4324                 if (config->tti.urange_a != VXGE_HW_USE_FLASH_DEFAULT) {
4325                         val64 &= ~VXGE_HW_TIM_CFG1_INT_NUM_URNG_A(0x3f);
4326                         val64 |= VXGE_HW_TIM_CFG1_INT_NUM_URNG_A(
4327                                         config->tti.urange_a);
4328                 }
4329
4330                 if (config->tti.urange_b != VXGE_HW_USE_FLASH_DEFAULT) {
4331                         val64 &= ~VXGE_HW_TIM_CFG1_INT_NUM_URNG_B(0x3f);
4332                         val64 |= VXGE_HW_TIM_CFG1_INT_NUM_URNG_B(
4333                                         config->tti.urange_b);
4334                 }
4335
4336                 if (config->tti.urange_c != VXGE_HW_USE_FLASH_DEFAULT) {
4337                         val64 &= ~VXGE_HW_TIM_CFG1_INT_NUM_URNG_C(0x3f);
4338                         val64 |= VXGE_HW_TIM_CFG1_INT_NUM_URNG_C(
4339                                         config->tti.urange_c);
4340                 }
4341
4342                 writeq(val64, &vp_reg->tim_cfg1_int_num[VXGE_HW_VPATH_INTR_TX]);
4343                 vpath->tim_tti_cfg1_saved = val64;
4344
4345                 val64 = readq(&vp_reg->tim_cfg2_int_num[VXGE_HW_VPATH_INTR_TX]);
4346
4347                 if (config->tti.uec_a != VXGE_HW_USE_FLASH_DEFAULT) {
4348                         val64 &= ~VXGE_HW_TIM_CFG2_INT_NUM_UEC_A(0xffff);
4349                         val64 |= VXGE_HW_TIM_CFG2_INT_NUM_UEC_A(
4350                                                 config->tti.uec_a);
4351                 }
4352
4353                 if (config->tti.uec_b != VXGE_HW_USE_FLASH_DEFAULT) {
4354                         val64 &= ~VXGE_HW_TIM_CFG2_INT_NUM_UEC_B(0xffff);
4355                         val64 |= VXGE_HW_TIM_CFG2_INT_NUM_UEC_B(
4356                                                 config->tti.uec_b);
4357                 }
4358
4359                 if (config->tti.uec_c != VXGE_HW_USE_FLASH_DEFAULT) {
4360                         val64 &= ~VXGE_HW_TIM_CFG2_INT_NUM_UEC_C(0xffff);
4361                         val64 |= VXGE_HW_TIM_CFG2_INT_NUM_UEC_C(
4362                                                 config->tti.uec_c);
4363                 }
4364
4365                 if (config->tti.uec_d != VXGE_HW_USE_FLASH_DEFAULT) {
4366                         val64 &= ~VXGE_HW_TIM_CFG2_INT_NUM_UEC_D(0xffff);
4367                         val64 |= VXGE_HW_TIM_CFG2_INT_NUM_UEC_D(
4368                                                 config->tti.uec_d);
4369                 }
4370
4371                 writeq(val64, &vp_reg->tim_cfg2_int_num[VXGE_HW_VPATH_INTR_TX]);
4372                 val64 = readq(&vp_reg->tim_cfg3_int_num[VXGE_HW_VPATH_INTR_TX]);
4373
4374                 if (config->tti.timer_ri_en != VXGE_HW_USE_FLASH_DEFAULT) {
4375                         if (config->tti.timer_ri_en)
4376                                 val64 |= VXGE_HW_TIM_CFG3_INT_NUM_TIMER_RI;
4377                         else
4378                                 val64 &= ~VXGE_HW_TIM_CFG3_INT_NUM_TIMER_RI;
4379                 }
4380
4381                 if (config->tti.rtimer_val != VXGE_HW_USE_FLASH_DEFAULT) {
4382                         val64 &= ~VXGE_HW_TIM_CFG3_INT_NUM_RTIMER_VAL(
4383                                         0x3ffffff);
4384                         val64 |= VXGE_HW_TIM_CFG3_INT_NUM_RTIMER_VAL(
4385                                         config->tti.rtimer_val);
4386                 }
4387
4388                 if (config->tti.util_sel != VXGE_HW_USE_FLASH_DEFAULT) {
4389                         val64 &= ~VXGE_HW_TIM_CFG3_INT_NUM_UTIL_SEL(0x3f);
4390                         val64 |= VXGE_HW_TIM_CFG3_INT_NUM_UTIL_SEL(vp_id);
4391                 }
4392
4393                 if (config->tti.ltimer_val != VXGE_HW_USE_FLASH_DEFAULT) {
4394                         val64 &= ~VXGE_HW_TIM_CFG3_INT_NUM_LTIMER_VAL(
4395                                         0x3ffffff);
4396                         val64 |= VXGE_HW_TIM_CFG3_INT_NUM_LTIMER_VAL(
4397                                         config->tti.ltimer_val);
4398                 }
4399
4400                 writeq(val64, &vp_reg->tim_cfg3_int_num[VXGE_HW_VPATH_INTR_TX]);
4401                 vpath->tim_tti_cfg3_saved = val64;
4402         }
4403
4404         if (config->ring.enable == VXGE_HW_RING_ENABLE) {
4405
4406                 val64 = readq(&vp_reg->tim_cfg1_int_num[VXGE_HW_VPATH_INTR_RX]);
4407
4408                 if (config->rti.btimer_val != VXGE_HW_USE_FLASH_DEFAULT) {
4409                         val64 &= ~VXGE_HW_TIM_CFG1_INT_NUM_BTIMER_VAL(
4410                                         0x3ffffff);
4411                         val64 |= VXGE_HW_TIM_CFG1_INT_NUM_BTIMER_VAL(
4412                                         config->rti.btimer_val);
4413                 }
4414
4415                 val64 &= ~VXGE_HW_TIM_CFG1_INT_NUM_BITMP_EN;
4416
4417                 if (config->rti.timer_ac_en != VXGE_HW_USE_FLASH_DEFAULT) {
4418                         if (config->rti.timer_ac_en)
4419                                 val64 |= VXGE_HW_TIM_CFG1_INT_NUM_TIMER_AC;
4420                         else
4421                                 val64 &= ~VXGE_HW_TIM_CFG1_INT_NUM_TIMER_AC;
4422                 }
4423
4424                 if (config->rti.timer_ci_en != VXGE_HW_USE_FLASH_DEFAULT) {
4425                         if (config->rti.timer_ci_en)
4426                                 val64 |= VXGE_HW_TIM_CFG1_INT_NUM_TIMER_CI;
4427                         else
4428                                 val64 &= ~VXGE_HW_TIM_CFG1_INT_NUM_TIMER_CI;
4429                 }
4430
4431                 if (config->rti.urange_a != VXGE_HW_USE_FLASH_DEFAULT) {
4432                         val64 &= ~VXGE_HW_TIM_CFG1_INT_NUM_URNG_A(0x3f);
4433                         val64 |= VXGE_HW_TIM_CFG1_INT_NUM_URNG_A(
4434                                         config->rti.urange_a);
4435                 }
4436
4437                 if (config->rti.urange_b != VXGE_HW_USE_FLASH_DEFAULT) {
4438                         val64 &= ~VXGE_HW_TIM_CFG1_INT_NUM_URNG_B(0x3f);
4439                         val64 |= VXGE_HW_TIM_CFG1_INT_NUM_URNG_B(
4440                                         config->rti.urange_b);
4441                 }
4442
4443                 if (config->rti.urange_c != VXGE_HW_USE_FLASH_DEFAULT) {
4444                         val64 &= ~VXGE_HW_TIM_CFG1_INT_NUM_URNG_C(0x3f);
4445                         val64 |= VXGE_HW_TIM_CFG1_INT_NUM_URNG_C(
4446                                         config->rti.urange_c);
4447                 }
4448
4449                 writeq(val64, &vp_reg->tim_cfg1_int_num[VXGE_HW_VPATH_INTR_RX]);
4450                 vpath->tim_rti_cfg1_saved = val64;
4451
4452                 val64 = readq(&vp_reg->tim_cfg2_int_num[VXGE_HW_VPATH_INTR_RX]);
4453
4454                 if (config->rti.uec_a != VXGE_HW_USE_FLASH_DEFAULT) {
4455                         val64 &= ~VXGE_HW_TIM_CFG2_INT_NUM_UEC_A(0xffff);
4456                         val64 |= VXGE_HW_TIM_CFG2_INT_NUM_UEC_A(
4457                                                 config->rti.uec_a);
4458                 }
4459
4460                 if (config->rti.uec_b != VXGE_HW_USE_FLASH_DEFAULT) {
4461                         val64 &= ~VXGE_HW_TIM_CFG2_INT_NUM_UEC_B(0xffff);
4462                         val64 |= VXGE_HW_TIM_CFG2_INT_NUM_UEC_B(
4463                                                 config->rti.uec_b);
4464                 }
4465
4466                 if (config->rti.uec_c != VXGE_HW_USE_FLASH_DEFAULT) {
4467                         val64 &= ~VXGE_HW_TIM_CFG2_INT_NUM_UEC_C(0xffff);
4468                         val64 |= VXGE_HW_TIM_CFG2_INT_NUM_UEC_C(
4469                                                 config->rti.uec_c);
4470                 }
4471
4472                 if (config->rti.uec_d != VXGE_HW_USE_FLASH_DEFAULT) {
4473                         val64 &= ~VXGE_HW_TIM_CFG2_INT_NUM_UEC_D(0xffff);
4474                         val64 |= VXGE_HW_TIM_CFG2_INT_NUM_UEC_D(
4475                                                 config->rti.uec_d);
4476                 }
4477
4478                 writeq(val64, &vp_reg->tim_cfg2_int_num[VXGE_HW_VPATH_INTR_RX]);
4479                 val64 = readq(&vp_reg->tim_cfg3_int_num[VXGE_HW_VPATH_INTR_RX]);
4480
4481                 if (config->rti.timer_ri_en != VXGE_HW_USE_FLASH_DEFAULT) {
4482                         if (config->rti.timer_ri_en)
4483                                 val64 |= VXGE_HW_TIM_CFG3_INT_NUM_TIMER_RI;
4484                         else
4485                                 val64 &= ~VXGE_HW_TIM_CFG3_INT_NUM_TIMER_RI;
4486                 }
4487
4488                 if (config->rti.rtimer_val != VXGE_HW_USE_FLASH_DEFAULT) {
4489                         val64 &= ~VXGE_HW_TIM_CFG3_INT_NUM_RTIMER_VAL(
4490                                         0x3ffffff);
4491                         val64 |= VXGE_HW_TIM_CFG3_INT_NUM_RTIMER_VAL(
4492                                         config->rti.rtimer_val);
4493                 }
4494
4495                 if (config->rti.util_sel != VXGE_HW_USE_FLASH_DEFAULT) {
4496                         val64 &= ~VXGE_HW_TIM_CFG3_INT_NUM_UTIL_SEL(0x3f);
4497                         val64 |= VXGE_HW_TIM_CFG3_INT_NUM_UTIL_SEL(vp_id);
4498                 }
4499
4500                 if (config->rti.ltimer_val != VXGE_HW_USE_FLASH_DEFAULT) {
4501                         val64 &= ~VXGE_HW_TIM_CFG3_INT_NUM_LTIMER_VAL(
4502                                         0x3ffffff);
4503                         val64 |= VXGE_HW_TIM_CFG3_INT_NUM_LTIMER_VAL(
4504                                         config->rti.ltimer_val);
4505                 }
4506
4507                 writeq(val64, &vp_reg->tim_cfg3_int_num[VXGE_HW_VPATH_INTR_RX]);
4508                 vpath->tim_rti_cfg3_saved = val64;
4509         }
4510
4511         val64 = 0;
4512         writeq(val64, &vp_reg->tim_cfg1_int_num[VXGE_HW_VPATH_INTR_EINTA]);
4513         writeq(val64, &vp_reg->tim_cfg2_int_num[VXGE_HW_VPATH_INTR_EINTA]);
4514         writeq(val64, &vp_reg->tim_cfg3_int_num[VXGE_HW_VPATH_INTR_EINTA]);
4515         writeq(val64, &vp_reg->tim_cfg1_int_num[VXGE_HW_VPATH_INTR_BMAP]);
4516         writeq(val64, &vp_reg->tim_cfg2_int_num[VXGE_HW_VPATH_INTR_BMAP]);
4517         writeq(val64, &vp_reg->tim_cfg3_int_num[VXGE_HW_VPATH_INTR_BMAP]);
4518
4519         val64 = VXGE_HW_TIM_WRKLD_CLC_WRKLD_EVAL_PRD(150);
4520         val64 |= VXGE_HW_TIM_WRKLD_CLC_WRKLD_EVAL_DIV(0);
4521         val64 |= VXGE_HW_TIM_WRKLD_CLC_CNT_RX_TX(3);
4522         writeq(val64, &vp_reg->tim_wrkld_clc);
4523
4524         return VXGE_HW_OK;
4525 }
4526
4527 /*
4528  * __vxge_hw_vpath_initialize
4529  * This routine is the final phase of init which initializes the
4530  * registers of the vpath using the configuration passed.
4531  */
4532 static enum vxge_hw_status
4533 __vxge_hw_vpath_initialize(struct __vxge_hw_device *hldev, u32 vp_id)
4534 {
4535         u64 val64;
4536         u32 val32;
4537         enum vxge_hw_status status = VXGE_HW_OK;
4538         struct __vxge_hw_virtualpath *vpath;
4539         struct vxge_hw_vpath_reg __iomem *vp_reg;
4540
4541         vpath = &hldev->virtual_paths[vp_id];
4542
4543         if (!(hldev->vpath_assignments & vxge_mBIT(vp_id))) {
4544                 status = VXGE_HW_ERR_VPATH_NOT_AVAILABLE;
4545                 goto exit;
4546         }
4547         vp_reg = vpath->vp_reg;
4548
4549         status =  __vxge_hw_vpath_swapper_set(vpath->vp_reg);
4550         if (status != VXGE_HW_OK)
4551                 goto exit;
4552
4553         status =  __vxge_hw_vpath_mac_configure(hldev, vp_id);
4554         if (status != VXGE_HW_OK)
4555                 goto exit;
4556
4557         status =  __vxge_hw_vpath_kdfc_configure(hldev, vp_id);
4558         if (status != VXGE_HW_OK)
4559                 goto exit;
4560
4561         status = __vxge_hw_vpath_tim_configure(hldev, vp_id);
4562         if (status != VXGE_HW_OK)
4563                 goto exit;
4564
4565         val64 = readq(&vp_reg->rtdma_rd_optimization_ctrl);
4566
4567         /* Get MRRS value from device control */
4568         status  = __vxge_hw_vpath_pci_read(vpath, 1, 0x78, &val32);
4569         if (status == VXGE_HW_OK) {
4570                 val32 = (val32 & VXGE_HW_PCI_EXP_DEVCTL_READRQ) >> 12;
4571                 val64 &=
4572                     ~(VXGE_HW_RTDMA_RD_OPTIMIZATION_CTRL_FB_FILL_THRESH(7));
4573                 val64 |=
4574                     VXGE_HW_RTDMA_RD_OPTIMIZATION_CTRL_FB_FILL_THRESH(val32);
4575
4576                 val64 |= VXGE_HW_RTDMA_RD_OPTIMIZATION_CTRL_FB_WAIT_FOR_SPACE;
4577         }
4578
4579         val64 &= ~(VXGE_HW_RTDMA_RD_OPTIMIZATION_CTRL_FB_ADDR_BDRY(7));
4580         val64 |=
4581             VXGE_HW_RTDMA_RD_OPTIMIZATION_CTRL_FB_ADDR_BDRY(
4582                     VXGE_HW_MAX_PAYLOAD_SIZE_512);
4583
4584         val64 |= VXGE_HW_RTDMA_RD_OPTIMIZATION_CTRL_FB_ADDR_BDRY_EN;
4585         writeq(val64, &vp_reg->rtdma_rd_optimization_ctrl);
4586
4587 exit:
4588         return status;
4589 }
4590
4591 /*
4592  * __vxge_hw_vp_terminate - Terminate Virtual Path structure
4593  * This routine closes all channels it opened and freeup memory
4594  */
4595 static void __vxge_hw_vp_terminate(struct __vxge_hw_device *hldev, u32 vp_id)
4596 {
4597         struct __vxge_hw_virtualpath *vpath;
4598
4599         vpath = &hldev->virtual_paths[vp_id];
4600
4601         if (vpath->vp_open == VXGE_HW_VP_NOT_OPEN)
4602                 goto exit;
4603
4604         VXGE_HW_DEVICE_TIM_INT_MASK_RESET(vpath->hldev->tim_int_mask0,
4605                 vpath->hldev->tim_int_mask1, vpath->vp_id);
4606         hldev->stats.hw_dev_info_stats.vpath_info[vpath->vp_id] = NULL;
4607
4608         /* If the whole struct __vxge_hw_virtualpath is zeroed, nothing will
4609          * work after the interface is brought down.
4610          */
4611         spin_lock(&vpath->lock);
4612         vpath->vp_open = VXGE_HW_VP_NOT_OPEN;
4613         spin_unlock(&vpath->lock);
4614
4615         vpath->vpmgmt_reg = NULL;
4616         vpath->nofl_db = NULL;
4617         vpath->max_mtu = 0;
4618         vpath->vsport_number = 0;
4619         vpath->max_kdfc_db = 0;
4620         vpath->max_nofl_db = 0;
4621         vpath->ringh = NULL;
4622         vpath->fifoh = NULL;
4623         memset(&vpath->vpath_handles, 0, sizeof(struct list_head));
4624         vpath->stats_block = NULL;
4625         vpath->hw_stats = NULL;
4626         vpath->hw_stats_sav = NULL;
4627         vpath->sw_stats = NULL;
4628
4629 exit:
4630         return;
4631 }
4632
4633 /*
4634  * __vxge_hw_vp_initialize - Initialize Virtual Path structure
4635  * This routine is the initial phase of init which resets the vpath and
4636  * initializes the software support structures.
4637  */
4638 static enum vxge_hw_status
4639 __vxge_hw_vp_initialize(struct __vxge_hw_device *hldev, u32 vp_id,
4640                         struct vxge_hw_vp_config *config)
4641 {
4642         struct __vxge_hw_virtualpath *vpath;
4643         enum vxge_hw_status status = VXGE_HW_OK;
4644
4645         if (!(hldev->vpath_assignments & vxge_mBIT(vp_id))) {
4646                 status = VXGE_HW_ERR_VPATH_NOT_AVAILABLE;
4647                 goto exit;
4648         }
4649
4650         vpath = &hldev->virtual_paths[vp_id];
4651
4652         spin_lock_init(&vpath->lock);
4653         vpath->vp_id = vp_id;
4654         vpath->vp_open = VXGE_HW_VP_OPEN;
4655         vpath->hldev = hldev;
4656         vpath->vp_config = config;
4657         vpath->vp_reg = hldev->vpath_reg[vp_id];
4658         vpath->vpmgmt_reg = hldev->vpmgmt_reg[vp_id];
4659
4660         __vxge_hw_vpath_reset(hldev, vp_id);
4661
4662         status = __vxge_hw_vpath_reset_check(vpath);
4663         if (status != VXGE_HW_OK) {
4664                 memset(vpath, 0, sizeof(struct __vxge_hw_virtualpath));
4665                 goto exit;
4666         }
4667
4668         status = __vxge_hw_vpath_mgmt_read(hldev, vpath);
4669         if (status != VXGE_HW_OK) {
4670                 memset(vpath, 0, sizeof(struct __vxge_hw_virtualpath));
4671                 goto exit;
4672         }
4673
4674         INIT_LIST_HEAD(&vpath->vpath_handles);
4675
4676         vpath->sw_stats = &hldev->stats.sw_dev_info_stats.vpath_info[vp_id];
4677
4678         VXGE_HW_DEVICE_TIM_INT_MASK_SET(hldev->tim_int_mask0,
4679                 hldev->tim_int_mask1, vp_id);
4680
4681         status = __vxge_hw_vpath_initialize(hldev, vp_id);
4682         if (status != VXGE_HW_OK)
4683                 __vxge_hw_vp_terminate(hldev, vp_id);
4684 exit:
4685         return status;
4686 }
4687
4688 /*
4689  * vxge_hw_vpath_mtu_set - Set MTU.
4690  * Set new MTU value. Example, to use jumbo frames:
4691  * vxge_hw_vpath_mtu_set(my_device, 9600);
4692  */
4693 enum vxge_hw_status
4694 vxge_hw_vpath_mtu_set(struct __vxge_hw_vpath_handle *vp, u32 new_mtu)
4695 {
4696         u64 val64;
4697         enum vxge_hw_status status = VXGE_HW_OK;
4698         struct __vxge_hw_virtualpath *vpath;
4699
4700         if (vp == NULL) {
4701                 status = VXGE_HW_ERR_INVALID_HANDLE;
4702                 goto exit;
4703         }
4704         vpath = vp->vpath;
4705
4706         new_mtu += VXGE_HW_MAC_HEADER_MAX_SIZE;
4707
4708         if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > vpath->max_mtu))
4709                 status = VXGE_HW_ERR_INVALID_MTU_SIZE;
4710
4711         val64 = readq(&vpath->vp_reg->rxmac_vcfg0);
4712
4713         val64 &= ~VXGE_HW_RXMAC_VCFG0_RTS_MAX_FRM_LEN(0x3fff);
4714         val64 |= VXGE_HW_RXMAC_VCFG0_RTS_MAX_FRM_LEN(new_mtu);
4715
4716         writeq(val64, &vpath->vp_reg->rxmac_vcfg0);
4717
4718         vpath->vp_config->mtu = new_mtu - VXGE_HW_MAC_HEADER_MAX_SIZE;
4719
4720 exit:
4721         return status;
4722 }
4723
4724 /*
4725  * vxge_hw_vpath_stats_enable - Enable vpath h/wstatistics.
4726  * Enable the DMA vpath statistics. The function is to be called to re-enable
4727  * the adapter to update stats into the host memory
4728  */
4729 static enum vxge_hw_status
4730 vxge_hw_vpath_stats_enable(struct __vxge_hw_vpath_handle *vp)
4731 {
4732         enum vxge_hw_status status = VXGE_HW_OK;
4733         struct __vxge_hw_virtualpath *vpath;
4734
4735         vpath = vp->vpath;
4736
4737         if (vpath->vp_open == VXGE_HW_VP_NOT_OPEN) {
4738                 status = VXGE_HW_ERR_VPATH_NOT_OPEN;
4739                 goto exit;
4740         }
4741
4742         memcpy(vpath->hw_stats_sav, vpath->hw_stats,
4743                         sizeof(struct vxge_hw_vpath_stats_hw_info));
4744
4745         status = __vxge_hw_vpath_stats_get(vpath, vpath->hw_stats);
4746 exit:
4747         return status;
4748 }
4749
4750 /*
4751  * __vxge_hw_blockpool_block_allocate - Allocates a block from block pool
4752  * This function allocates a block from block pool or from the system
4753  */
4754 static struct __vxge_hw_blockpool_entry *
4755 __vxge_hw_blockpool_block_allocate(struct __vxge_hw_device *devh, u32 size)
4756 {
4757         struct __vxge_hw_blockpool_entry *entry = NULL;
4758         struct __vxge_hw_blockpool  *blockpool;
4759
4760         blockpool = &devh->block_pool;
4761
4762         if (size == blockpool->block_size) {
4763
4764                 if (!list_empty(&blockpool->free_block_list))
4765                         entry = (struct __vxge_hw_blockpool_entry *)
4766                                 list_first_entry(&blockpool->free_block_list,
4767                                         struct __vxge_hw_blockpool_entry,
4768                                         item);
4769
4770                 if (entry != NULL) {
4771                         list_del(&entry->item);
4772                         blockpool->pool_size--;
4773                 }
4774         }
4775
4776         if (entry != NULL)
4777                 __vxge_hw_blockpool_blocks_add(blockpool);
4778
4779         return entry;
4780 }
4781
4782 /*
4783  * vxge_hw_vpath_open - Open a virtual path on a given adapter
4784  * This function is used to open access to virtual path of an
4785  * adapter for offload, GRO operations. This function returns
4786  * synchronously.
4787  */
4788 enum vxge_hw_status
4789 vxge_hw_vpath_open(struct __vxge_hw_device *hldev,
4790                    struct vxge_hw_vpath_attr *attr,
4791                    struct __vxge_hw_vpath_handle **vpath_handle)
4792 {
4793         struct __vxge_hw_virtualpath *vpath;
4794         struct __vxge_hw_vpath_handle *vp;
4795         enum vxge_hw_status status;
4796
4797         vpath = &hldev->virtual_paths[attr->vp_id];
4798
4799         if (vpath->vp_open == VXGE_HW_VP_OPEN) {
4800                 status = VXGE_HW_ERR_INVALID_STATE;
4801                 goto vpath_open_exit1;
4802         }
4803
4804         status = __vxge_hw_vp_initialize(hldev, attr->vp_id,
4805                         &hldev->config.vp_config[attr->vp_id]);
4806         if (status != VXGE_HW_OK)
4807                 goto vpath_open_exit1;
4808
4809         vp = vzalloc(sizeof(struct __vxge_hw_vpath_handle));
4810         if (vp == NULL) {
4811                 status = VXGE_HW_ERR_OUT_OF_MEMORY;
4812                 goto vpath_open_exit2;
4813         }
4814
4815         vp->vpath = vpath;
4816
4817         if (vpath->vp_config->fifo.enable == VXGE_HW_FIFO_ENABLE) {
4818                 status = __vxge_hw_fifo_create(vp, &attr->fifo_attr);
4819                 if (status != VXGE_HW_OK)
4820                         goto vpath_open_exit6;
4821         }
4822
4823         if (vpath->vp_config->ring.enable == VXGE_HW_RING_ENABLE) {
4824                 status = __vxge_hw_ring_create(vp, &attr->ring_attr);
4825                 if (status != VXGE_HW_OK)
4826                         goto vpath_open_exit7;
4827
4828                 __vxge_hw_vpath_prc_configure(hldev, attr->vp_id);
4829         }
4830
4831         vpath->fifoh->tx_intr_num =
4832                 (attr->vp_id * VXGE_HW_MAX_INTR_PER_VP)  +
4833                         VXGE_HW_VPATH_INTR_TX;
4834
4835         vpath->stats_block = __vxge_hw_blockpool_block_allocate(hldev,
4836                                 VXGE_HW_BLOCK_SIZE);
4837         if (vpath->stats_block == NULL) {
4838                 status = VXGE_HW_ERR_OUT_OF_MEMORY;
4839                 goto vpath_open_exit8;
4840         }
4841
4842         vpath->hw_stats = vpath->stats_block->memblock;
4843         memset(vpath->hw_stats, 0,
4844                 sizeof(struct vxge_hw_vpath_stats_hw_info));
4845
4846         hldev->stats.hw_dev_info_stats.vpath_info[attr->vp_id] =
4847                                                 vpath->hw_stats;
4848
4849         vpath->hw_stats_sav =
4850                 &hldev->stats.hw_dev_info_stats.vpath_info_sav[attr->vp_id];
4851         memset(vpath->hw_stats_sav, 0,
4852                         sizeof(struct vxge_hw_vpath_stats_hw_info));
4853
4854         writeq(vpath->stats_block->dma_addr, &vpath->vp_reg->stats_cfg);
4855
4856         status = vxge_hw_vpath_stats_enable(vp);
4857         if (status != VXGE_HW_OK)
4858                 goto vpath_open_exit8;
4859
4860         list_add(&vp->item, &vpath->vpath_handles);
4861
4862         hldev->vpaths_deployed |= vxge_mBIT(vpath->vp_id);
4863
4864         *vpath_handle = vp;
4865
4866         attr->fifo_attr.userdata = vpath->fifoh;
4867         attr->ring_attr.userdata = vpath->ringh;
4868
4869         return VXGE_HW_OK;
4870
4871 vpath_open_exit8:
4872         if (vpath->ringh != NULL)
4873                 __vxge_hw_ring_delete(vp);
4874 vpath_open_exit7:
4875         if (vpath->fifoh != NULL)
4876                 __vxge_hw_fifo_delete(vp);
4877 vpath_open_exit6:
4878         vfree(vp);
4879 vpath_open_exit2:
4880         __vxge_hw_vp_terminate(hldev, attr->vp_id);
4881 vpath_open_exit1:
4882
4883         return status;
4884 }
4885
4886 /**
4887  * vxge_hw_vpath_rx_doorbell_post - Close the handle got from previous vpath
4888  * (vpath) open
4889  * @vp: Handle got from previous vpath open
4890  *
4891  * This function is used to close access to virtual path opened
4892  * earlier.
4893  */
4894 void vxge_hw_vpath_rx_doorbell_init(struct __vxge_hw_vpath_handle *vp)
4895 {
4896         struct __vxge_hw_virtualpath *vpath = vp->vpath;
4897         struct __vxge_hw_ring *ring = vpath->ringh;
4898         struct vxgedev *vdev = netdev_priv(vpath->hldev->ndev);
4899         u64 new_count, val64, val164;
4900
4901         if (vdev->titan1) {
4902                 new_count = readq(&vpath->vp_reg->rxdmem_size);
4903                 new_count &= 0x1fff;
4904         } else
4905                 new_count = ring->config->ring_blocks * VXGE_HW_BLOCK_SIZE / 8;
4906
4907         val164 = VXGE_HW_RXDMEM_SIZE_PRC_RXDMEM_SIZE(new_count);
4908
4909         writeq(VXGE_HW_PRC_RXD_DOORBELL_NEW_QW_CNT(val164),
4910                 &vpath->vp_reg->prc_rxd_doorbell);
4911         readl(&vpath->vp_reg->prc_rxd_doorbell);
4912
4913         val164 /= 2;
4914         val64 = readq(&vpath->vp_reg->prc_cfg6);
4915         val64 = VXGE_HW_PRC_CFG6_RXD_SPAT(val64);
4916         val64 &= 0x1ff;
4917
4918         /*
4919          * Each RxD is of 4 qwords
4920          */
4921         new_count -= (val64 + 1);
4922         val64 = min(val164, new_count) / 4;
4923
4924         ring->rxds_limit = min(ring->rxds_limit, val64);
4925         if (ring->rxds_limit < 4)
4926                 ring->rxds_limit = 4;
4927 }
4928
4929 /*
4930  * __vxge_hw_blockpool_block_free - Frees a block from block pool
4931  * @devh: Hal device
4932  * @entry: Entry of block to be freed
4933  *
4934  * This function frees a block from block pool
4935  */
4936 static void
4937 __vxge_hw_blockpool_block_free(struct __vxge_hw_device *devh,
4938                                struct __vxge_hw_blockpool_entry *entry)
4939 {
4940         struct __vxge_hw_blockpool  *blockpool;
4941
4942         blockpool = &devh->block_pool;
4943
4944         if (entry->length == blockpool->block_size) {
4945                 list_add(&entry->item, &blockpool->free_block_list);
4946                 blockpool->pool_size++;
4947         }
4948
4949         __vxge_hw_blockpool_blocks_remove(blockpool);
4950 }
4951
4952 /*
4953  * vxge_hw_vpath_close - Close the handle got from previous vpath (vpath) open
4954  * This function is used to close access to virtual path opened
4955  * earlier.
4956  */
4957 enum vxge_hw_status vxge_hw_vpath_close(struct __vxge_hw_vpath_handle *vp)
4958 {
4959         struct __vxge_hw_virtualpath *vpath = NULL;
4960         struct __vxge_hw_device *devh = NULL;
4961         u32 vp_id = vp->vpath->vp_id;
4962         u32 is_empty = TRUE;
4963         enum vxge_hw_status status = VXGE_HW_OK;
4964
4965         vpath = vp->vpath;
4966         devh = vpath->hldev;
4967
4968         if (vpath->vp_open == VXGE_HW_VP_NOT_OPEN) {
4969                 status = VXGE_HW_ERR_VPATH_NOT_OPEN;
4970                 goto vpath_close_exit;
4971         }
4972
4973         list_del(&vp->item);
4974
4975         if (!list_empty(&vpath->vpath_handles)) {
4976                 list_add(&vp->item, &vpath->vpath_handles);
4977                 is_empty = FALSE;
4978         }
4979
4980         if (!is_empty) {
4981                 status = VXGE_HW_FAIL;
4982                 goto vpath_close_exit;
4983         }
4984
4985         devh->vpaths_deployed &= ~vxge_mBIT(vp_id);
4986
4987         if (vpath->ringh != NULL)
4988                 __vxge_hw_ring_delete(vp);
4989
4990         if (vpath->fifoh != NULL)
4991                 __vxge_hw_fifo_delete(vp);
4992
4993         if (vpath->stats_block != NULL)
4994                 __vxge_hw_blockpool_block_free(devh, vpath->stats_block);
4995
4996         vfree(vp);
4997
4998         __vxge_hw_vp_terminate(devh, vp_id);
4999
5000 vpath_close_exit:
5001         return status;
5002 }
5003
5004 /*
5005  * vxge_hw_vpath_reset - Resets vpath
5006  * This function is used to request a reset of vpath
5007  */
5008 enum vxge_hw_status vxge_hw_vpath_reset(struct __vxge_hw_vpath_handle *vp)
5009 {
5010         enum vxge_hw_status status;
5011         u32 vp_id;
5012         struct __vxge_hw_virtualpath *vpath = vp->vpath;
5013
5014         vp_id = vpath->vp_id;
5015
5016         if (vpath->vp_open == VXGE_HW_VP_NOT_OPEN) {
5017                 status = VXGE_HW_ERR_VPATH_NOT_OPEN;
5018                 goto exit;
5019         }
5020
5021         status = __vxge_hw_vpath_reset(vpath->hldev, vp_id);
5022         if (status == VXGE_HW_OK)
5023                 vpath->sw_stats->soft_reset_cnt++;
5024 exit:
5025         return status;
5026 }
5027
5028 /*
5029  * vxge_hw_vpath_recover_from_reset - Poll for reset complete and re-initialize.
5030  * This function poll's for the vpath reset completion and re initializes
5031  * the vpath.
5032  */
5033 enum vxge_hw_status
5034 vxge_hw_vpath_recover_from_reset(struct __vxge_hw_vpath_handle *vp)
5035 {
5036         struct __vxge_hw_virtualpath *vpath = NULL;
5037         enum vxge_hw_status status;
5038         struct __vxge_hw_device *hldev;
5039         u32 vp_id;
5040
5041         vp_id = vp->vpath->vp_id;
5042         vpath = vp->vpath;
5043         hldev = vpath->hldev;
5044
5045         if (vpath->vp_open == VXGE_HW_VP_NOT_OPEN) {
5046                 status = VXGE_HW_ERR_VPATH_NOT_OPEN;
5047                 goto exit;
5048         }
5049
5050         status = __vxge_hw_vpath_reset_check(vpath);
5051         if (status != VXGE_HW_OK)
5052                 goto exit;
5053
5054         status = __vxge_hw_vpath_sw_reset(hldev, vp_id);
5055         if (status != VXGE_HW_OK)
5056                 goto exit;
5057
5058         status = __vxge_hw_vpath_initialize(hldev, vp_id);
5059         if (status != VXGE_HW_OK)
5060                 goto exit;
5061
5062         if (vpath->ringh != NULL)
5063                 __vxge_hw_vpath_prc_configure(hldev, vp_id);
5064
5065         memset(vpath->hw_stats, 0,
5066                 sizeof(struct vxge_hw_vpath_stats_hw_info));
5067
5068         memset(vpath->hw_stats_sav, 0,
5069                 sizeof(struct vxge_hw_vpath_stats_hw_info));
5070
5071         writeq(vpath->stats_block->dma_addr,
5072                 &vpath->vp_reg->stats_cfg);
5073
5074         status = vxge_hw_vpath_stats_enable(vp);
5075
5076 exit:
5077         return status;
5078 }
5079
5080 /*
5081  * vxge_hw_vpath_enable - Enable vpath.
5082  * This routine clears the vpath reset thereby enabling a vpath
5083  * to start forwarding frames and generating interrupts.
5084  */
5085 void
5086 vxge_hw_vpath_enable(struct __vxge_hw_vpath_handle *vp)
5087 {
5088         struct __vxge_hw_device *hldev;
5089         u64 val64;
5090
5091         hldev = vp->vpath->hldev;
5092
5093         val64 = VXGE_HW_CMN_RSTHDLR_CFG1_CLR_VPATH_RESET(
5094                 1 << (16 - vp->vpath->vp_id));
5095
5096         __vxge_hw_pio_mem_write32_upper((u32)vxge_bVALn(val64, 0, 32),
5097                 &hldev->common_reg->cmn_rsthdlr_cfg1);
5098 }