1 /* 2 * Adaptec AAC series RAID controller driver 3 * (c) Copyright 2001 Red Hat Inc. 4 * 5 * based on the old aacraid driver that is.. 6 * Adaptec aacraid device driver for Linux. 7 * 8 * Copyright (c) 2000-2010 Adaptec, Inc. 9 * 2010 PMC-Sierra, Inc. (aacraid@pmc-sierra.com) 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2, or (at your option) 14 * any later version. 15 * 16 * This program is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 * GNU General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; see the file COPYING. If not, write to 23 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 24 * 25 * Module Name: 26 * comminit.c 27 * 28 * Abstract: This supports the initialization of the host adapter commuication interface. 29 * This is a platform dependent module for the pci cyclone board. 30 * 31 */ 32 33 #include <linux/kernel.h> 34 #include <linux/init.h> 35 #include <linux/types.h> 36 #include <linux/pci.h> 37 #include <linux/spinlock.h> 38 #include <linux/slab.h> 39 #include <linux/blkdev.h> 40 #include <linux/completion.h> 41 #include <linux/mm.h> 42 #include <scsi/scsi_host.h> 43 44 #include "aacraid.h" 45 46 struct aac_common aac_config = { 47 .irq_mod = 1 48 }; 49 50 static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long commsize, unsigned long commalign) 51 { 52 unsigned char *base; 53 unsigned long size, align; 54 const unsigned long fibsize = 4096; 55 const unsigned long printfbufsiz = 256; 56 unsigned long host_rrq_size = 0; 57 struct aac_init *init; 58 dma_addr_t phys; 59 unsigned long aac_max_hostphysmempages; 60 61 if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) 62 host_rrq_size = (dev->scsi_host_ptr->can_queue 63 + AAC_NUM_MGT_FIB) * sizeof(u32); 64 size = fibsize + sizeof(struct aac_init) + commsize + 65 commalign + printfbufsiz + host_rrq_size; 66 67 base = pci_alloc_consistent(dev->pdev, size, &phys); 68 69 if(base == NULL) 70 { 71 printk(KERN_ERR "aacraid: unable to create mapping.\n"); 72 return 0; 73 } 74 dev->comm_addr = (void *)base; 75 dev->comm_phys = phys; 76 dev->comm_size = size; 77 78 if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) { 79 dev->host_rrq = (u32 *)(base + fibsize); 80 dev->host_rrq_pa = phys + fibsize; 81 memset(dev->host_rrq, 0, host_rrq_size); 82 } 83 84 dev->init = (struct aac_init *)(base + fibsize + host_rrq_size); 85 dev->init_pa = phys + fibsize + host_rrq_size; 86 87 init = dev->init; 88 89 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION); 90 if (dev->max_fib_size != sizeof(struct hw_fib)) 91 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4); 92 init->MiniPortRevision = cpu_to_le32(Sa_MINIPORT_REVISION); 93 init->fsrev = cpu_to_le32(dev->fsrev); 94 95 /* 96 * Adapter Fibs are the first thing allocated so that they 97 * start page aligned 98 */ 99 dev->aif_base_va = (struct hw_fib *)base; 100 101 init->AdapterFibsVirtualAddress = 0; 102 init->AdapterFibsPhysicalAddress = cpu_to_le32((u32)phys); 103 init->AdapterFibsSize = cpu_to_le32(fibsize); 104 init->AdapterFibAlign = cpu_to_le32(sizeof(struct hw_fib)); 105 /* 106 * number of 4k pages of host physical memory. The aacraid fw needs 107 * this number to be less than 4gb worth of pages. New firmware doesn't 108 * have any issues with the mapping system, but older Firmware did, and 109 * had *troubles* dealing with the math overloading past 32 bits, thus 110 * we must limit this field. 111 */ 112 aac_max_hostphysmempages = dma_get_required_mask(&dev->pdev->dev) >> 12; 113 if (aac_max_hostphysmempages < AAC_MAX_HOSTPHYSMEMPAGES) 114 init->HostPhysMemPages = cpu_to_le32(aac_max_hostphysmempages); 115 else 116 init->HostPhysMemPages = cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES); 117 118 init->InitFlags = 0; 119 if (dev->comm_interface == AAC_COMM_MESSAGE) { 120 init->InitFlags |= cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED); 121 dprintk((KERN_WARNING"aacraid: New Comm Interface enabled\n")); 122 } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) { 123 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_6); 124 init->InitFlags |= cpu_to_le32(INITFLAGS_NEW_COMM_TYPE1_SUPPORTED); 125 dprintk((KERN_WARNING 126 "aacraid: New Comm Interface type1 enabled\n")); 127 } 128 init->InitFlags |= cpu_to_le32(INITFLAGS_DRIVER_USES_UTC_TIME | 129 INITFLAGS_DRIVER_SUPPORTS_PM); 130 init->MaxIoCommands = cpu_to_le32(dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); 131 init->MaxIoSize = cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9); 132 init->MaxFibSize = cpu_to_le32(dev->max_fib_size); 133 134 init->MaxNumAif = cpu_to_le32(dev->max_num_aif); 135 init->HostRRQ_AddrHigh = (u32)((u64)dev->host_rrq_pa >> 32); 136 init->HostRRQ_AddrLow = (u32)(dev->host_rrq_pa & 0xffffffff); 137 138 139 /* 140 * Increment the base address by the amount already used 141 */ 142 base = base + fibsize + host_rrq_size + sizeof(struct aac_init); 143 phys = (dma_addr_t)((ulong)phys + fibsize + host_rrq_size + 144 sizeof(struct aac_init)); 145 146 /* 147 * Align the beginning of Headers to commalign 148 */ 149 align = (commalign - ((uintptr_t)(base) & (commalign - 1))); 150 base = base + align; 151 phys = phys + align; 152 /* 153 * Fill in addresses of the Comm Area Headers and Queues 154 */ 155 *commaddr = base; 156 init->CommHeaderAddress = cpu_to_le32((u32)phys); 157 /* 158 * Increment the base address by the size of the CommArea 159 */ 160 base = base + commsize; 161 phys = phys + commsize; 162 /* 163 * Place the Printf buffer area after the Fast I/O comm area. 164 */ 165 dev->printfbuf = (void *)base; 166 init->printfbuf = cpu_to_le32(phys); 167 init->printfbufsiz = cpu_to_le32(printfbufsiz); 168 memset(base, 0, printfbufsiz); 169 return 1; 170 } 171 172 static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize) 173 { 174 q->numpending = 0; 175 q->dev = dev; 176 init_waitqueue_head(&q->cmdready); 177 INIT_LIST_HEAD(&q->cmdq); 178 init_waitqueue_head(&q->qfull); 179 spin_lock_init(&q->lockdata); 180 q->lock = &q->lockdata; 181 q->headers.producer = (__le32 *)mem; 182 q->headers.consumer = (__le32 *)(mem+1); 183 *(q->headers.producer) = cpu_to_le32(qsize); 184 *(q->headers.consumer) = cpu_to_le32(qsize); 185 q->entries = qsize; 186 } 187 188 /** 189 * aac_send_shutdown - shutdown an adapter 190 * @dev: Adapter to shutdown 191 * 192 * This routine will send a VM_CloseAll (shutdown) request to the adapter. 193 */ 194 195 int aac_send_shutdown(struct aac_dev * dev) 196 { 197 struct fib * fibctx; 198 struct aac_close *cmd; 199 int status; 200 201 fibctx = aac_fib_alloc(dev); 202 if (!fibctx) 203 return -ENOMEM; 204 aac_fib_init(fibctx); 205 206 cmd = (struct aac_close *) fib_data(fibctx); 207 208 cmd->command = cpu_to_le32(VM_CloseAll); 209 cmd->cid = cpu_to_le32(0xffffffff); 210 211 status = aac_fib_send(ContainerCommand, 212 fibctx, 213 sizeof(struct aac_close), 214 FsaNormal, 215 -2 /* Timeout silently */, 1, 216 NULL, NULL); 217 218 if (status >= 0) 219 aac_fib_complete(fibctx); 220 /* FIB should be freed only after getting the response from the F/W */ 221 if (status != -ERESTARTSYS) 222 aac_fib_free(fibctx); 223 return status; 224 } 225 226 /** 227 * aac_comm_init - Initialise FSA data structures 228 * @dev: Adapter to initialise 229 * 230 * Initializes the data structures that are required for the FSA commuication 231 * interface to operate. 232 * Returns 233 * 1 - if we were able to init the commuication interface. 234 * 0 - If there were errors initing. This is a fatal error. 235 */ 236 237 static int aac_comm_init(struct aac_dev * dev) 238 { 239 unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2; 240 unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES; 241 u32 *headers; 242 struct aac_entry * queues; 243 unsigned long size; 244 struct aac_queue_block * comm = dev->queues; 245 /* 246 * Now allocate and initialize the zone structures used as our 247 * pool of FIB context records. The size of the zone is based 248 * on the system memory size. We also initialize the mutex used 249 * to protect the zone. 250 */ 251 spin_lock_init(&dev->fib_lock); 252 253 /* 254 * Allocate the physically contiguous space for the commuication 255 * queue headers. 256 */ 257 258 size = hdrsize + queuesize; 259 260 if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT)) 261 return -ENOMEM; 262 263 queues = (struct aac_entry *)(((ulong)headers) + hdrsize); 264 265 /* Adapter to Host normal priority Command queue */ 266 comm->queue[HostNormCmdQueue].base = queues; 267 aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES); 268 queues += HOST_NORM_CMD_ENTRIES; 269 headers += 2; 270 271 /* Adapter to Host high priority command queue */ 272 comm->queue[HostHighCmdQueue].base = queues; 273 aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES); 274 275 queues += HOST_HIGH_CMD_ENTRIES; 276 headers +=2; 277 278 /* Host to adapter normal priority command queue */ 279 comm->queue[AdapNormCmdQueue].base = queues; 280 aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES); 281 282 queues += ADAP_NORM_CMD_ENTRIES; 283 headers += 2; 284 285 /* host to adapter high priority command queue */ 286 comm->queue[AdapHighCmdQueue].base = queues; 287 aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES); 288 289 queues += ADAP_HIGH_CMD_ENTRIES; 290 headers += 2; 291 292 /* adapter to host normal priority response queue */ 293 comm->queue[HostNormRespQueue].base = queues; 294 aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES); 295 queues += HOST_NORM_RESP_ENTRIES; 296 headers += 2; 297 298 /* adapter to host high priority response queue */ 299 comm->queue[HostHighRespQueue].base = queues; 300 aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES); 301 302 queues += HOST_HIGH_RESP_ENTRIES; 303 headers += 2; 304 305 /* host to adapter normal priority response queue */ 306 comm->queue[AdapNormRespQueue].base = queues; 307 aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES); 308 309 queues += ADAP_NORM_RESP_ENTRIES; 310 headers += 2; 311 312 /* host to adapter high priority response queue */ 313 comm->queue[AdapHighRespQueue].base = queues; 314 aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES); 315 316 comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock; 317 comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock; 318 comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock; 319 comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock; 320 321 return 0; 322 } 323 324 struct aac_dev *aac_init_adapter(struct aac_dev *dev) 325 { 326 u32 status[5]; 327 struct Scsi_Host * host = dev->scsi_host_ptr; 328 extern int aac_sync_mode; 329 330 /* 331 * Check the preferred comm settings, defaults from template. 332 */ 333 dev->management_fib_count = 0; 334 spin_lock_init(&dev->manage_lock); 335 spin_lock_init(&dev->sync_lock); 336 dev->max_fib_size = sizeof(struct hw_fib); 337 dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size 338 - sizeof(struct aac_fibhdr) 339 - sizeof(struct aac_write) + sizeof(struct sgentry)) 340 / sizeof(struct sgentry); 341 dev->comm_interface = AAC_COMM_PRODUCER; 342 dev->raw_io_interface = dev->raw_io_64 = 0; 343 344 if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES, 345 0, 0, 0, 0, 0, 0, status+0, status+1, status+2, NULL, NULL)) && 346 (status[0] == 0x00000001)) { 347 if (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_64)) 348 dev->raw_io_64 = 1; 349 dev->sync_mode = aac_sync_mode; 350 if (dev->a_ops.adapter_comm && 351 (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM))) { 352 dev->comm_interface = AAC_COMM_MESSAGE; 353 dev->raw_io_interface = 1; 354 if ((status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE1))) { 355 /* driver supports TYPE1 (Tupelo) */ 356 dev->comm_interface = AAC_COMM_MESSAGE_TYPE1; 357 } else if ((status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE4)) || 358 (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE3)) || 359 (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE2))) { 360 /* driver doesn't support TYPE2 (Series7), TYPE3 and TYPE4 */ 361 /* switch to sync. mode */ 362 dev->comm_interface = AAC_COMM_MESSAGE_TYPE1; 363 dev->sync_mode = 1; 364 } 365 } 366 if ((dev->comm_interface == AAC_COMM_MESSAGE) && 367 (status[2] > dev->base_size)) { 368 aac_adapter_ioremap(dev, 0); 369 dev->base_size = status[2]; 370 if (aac_adapter_ioremap(dev, status[2])) { 371 /* remap failed, go back ... */ 372 dev->comm_interface = AAC_COMM_PRODUCER; 373 if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) { 374 printk(KERN_WARNING 375 "aacraid: unable to map adapter.\n"); 376 return NULL; 377 } 378 } 379 } 380 } 381 if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS, 382 0, 0, 0, 0, 0, 0, 383 status+0, status+1, status+2, status+3, status+4)) 384 && (status[0] == 0x00000001)) { 385 /* 386 * status[1] >> 16 maximum command size in KB 387 * status[1] & 0xFFFF maximum FIB size 388 * status[2] >> 16 maximum SG elements to driver 389 * status[2] & 0xFFFF maximum SG elements from driver 390 * status[3] & 0xFFFF maximum number FIBs outstanding 391 */ 392 host->max_sectors = (status[1] >> 16) << 1; 393 /* Multiple of 32 for PMC */ 394 dev->max_fib_size = status[1] & 0xFFE0; 395 host->sg_tablesize = status[2] >> 16; 396 dev->sg_tablesize = status[2] & 0xFFFF; 397 host->can_queue = (status[3] & 0xFFFF) - AAC_NUM_MGT_FIB; 398 dev->max_num_aif = status[4] & 0xFFFF; 399 /* 400 * NOTE: 401 * All these overrides are based on a fixed internal 402 * knowledge and understanding of existing adapters, 403 * acbsize should be set with caution. 404 */ 405 if (acbsize == 512) { 406 host->max_sectors = AAC_MAX_32BIT_SGBCOUNT; 407 dev->max_fib_size = 512; 408 dev->sg_tablesize = host->sg_tablesize 409 = (512 - sizeof(struct aac_fibhdr) 410 - sizeof(struct aac_write) + sizeof(struct sgentry)) 411 / sizeof(struct sgentry); 412 host->can_queue = AAC_NUM_IO_FIB; 413 } else if (acbsize == 2048) { 414 host->max_sectors = 512; 415 dev->max_fib_size = 2048; 416 host->sg_tablesize = 65; 417 dev->sg_tablesize = 81; 418 host->can_queue = 512 - AAC_NUM_MGT_FIB; 419 } else if (acbsize == 4096) { 420 host->max_sectors = 1024; 421 dev->max_fib_size = 4096; 422 host->sg_tablesize = 129; 423 dev->sg_tablesize = 166; 424 host->can_queue = 256 - AAC_NUM_MGT_FIB; 425 } else if (acbsize == 8192) { 426 host->max_sectors = 2048; 427 dev->max_fib_size = 8192; 428 host->sg_tablesize = 257; 429 dev->sg_tablesize = 337; 430 host->can_queue = 128 - AAC_NUM_MGT_FIB; 431 } else if (acbsize > 0) { 432 printk("Illegal acbsize=%d ignored\n", acbsize); 433 } 434 } 435 { 436 437 if (numacb > 0) { 438 if (numacb < host->can_queue) 439 host->can_queue = numacb; 440 else 441 printk("numacb=%d ignored\n", numacb); 442 } 443 } 444 445 /* 446 * Ok now init the communication subsystem 447 */ 448 449 dev->queues = kzalloc(sizeof(struct aac_queue_block), GFP_KERNEL); 450 if (dev->queues == NULL) { 451 printk(KERN_ERR "Error could not allocate comm region.\n"); 452 return NULL; 453 } 454 455 if (aac_comm_init(dev)<0){ 456 kfree(dev->queues); 457 return NULL; 458 } 459 /* 460 * Initialize the list of fibs 461 */ 462 if (aac_fib_setup(dev) < 0) { 463 kfree(dev->queues); 464 return NULL; 465 } 466 467 INIT_LIST_HEAD(&dev->fib_list); 468 INIT_LIST_HEAD(&dev->sync_fib_list); 469 470 return dev; 471 } 472 473 474