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) 2000-2007 Adaptec, Inc. (aacraid@adaptec.com) 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2, or (at your option) 13 * any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; see the file COPYING. If not, write to 22 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 23 * 24 * Module Name: 25 * comminit.c 26 * 27 * Abstract: This supports the initialization of the host adapter commuication interface. 28 * This is a platform dependent module for the pci cyclone board. 29 * 30 */ 31 32#include <linux/kernel.h> 33#include <linux/init.h> 34#include <linux/types.h> 35#include <linux/pci.h> 36#include <linux/spinlock.h> 37#include <linux/slab.h> 38#include <linux/blkdev.h> 39#include <linux/completion.h> 40#include <linux/mm.h> 41#include <scsi/scsi_host.h> 42 43#include "aacraid.h" 44 45struct aac_common aac_config = { 46 .irq_mod = 1 47}; 48 49static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long commsize, unsigned long commalign) 50{ 51 unsigned char *base; 52 unsigned long size, align; 53 const unsigned long fibsize = 4096; 54 const unsigned long printfbufsiz = 256; 55 struct aac_init *init; 56 dma_addr_t phys; 57 unsigned long aac_max_hostphysmempages; 58 59 size = fibsize + sizeof(struct aac_init) + commsize + commalign + printfbufsiz; 60 61 62 base = pci_alloc_consistent(dev->pdev, size, &phys); 63 64 if(base == NULL) 65 { 66 printk(KERN_ERR "aacraid: unable to create mapping.\n"); 67 return 0; 68 } 69 dev->comm_addr = (void *)base; 70 dev->comm_phys = phys; 71 dev->comm_size = size; 72 73 dev->init = (struct aac_init *)(base + fibsize); 74 dev->init_pa = phys + fibsize; 75 76 init = dev->init; 77 78 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION); 79 if (dev->max_fib_size != sizeof(struct hw_fib)) 80 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4); 81 init->MiniPortRevision = cpu_to_le32(Sa_MINIPORT_REVISION); 82 init->fsrev = cpu_to_le32(dev->fsrev); 83 84 /* 85 * Adapter Fibs are the first thing allocated so that they 86 * start page aligned 87 */ 88 dev->aif_base_va = (struct hw_fib *)base; 89 90 init->AdapterFibsVirtualAddress = 0; 91 init->AdapterFibsPhysicalAddress = cpu_to_le32((u32)phys); 92 init->AdapterFibsSize = cpu_to_le32(fibsize); 93 init->AdapterFibAlign = cpu_to_le32(sizeof(struct hw_fib)); 94 /* 95 * number of 4k pages of host physical memory. The aacraid fw needs 96 * this number to be less than 4gb worth of pages. New firmware doesn't 97 * have any issues with the mapping system, but older Firmware did, and 98 * had *troubles* dealing with the math overloading past 32 bits, thus 99 * we must limit this field. 100 */ 101 aac_max_hostphysmempages = dma_get_required_mask(&dev->pdev->dev) >> 12; 102 if (aac_max_hostphysmempages < AAC_MAX_HOSTPHYSMEMPAGES) 103 init->HostPhysMemPages = cpu_to_le32(aac_max_hostphysmempages); 104 else 105 init->HostPhysMemPages = cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES); 106 107 init->InitFlags = 0; 108 if (dev->comm_interface == AAC_COMM_MESSAGE) { 109 init->InitFlags = cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED); 110 dprintk((KERN_WARNING"aacraid: New Comm Interface enabled\n")); 111 } 112 init->InitFlags |= cpu_to_le32(INITFLAGS_DRIVER_USES_UTC_TIME | 113 INITFLAGS_DRIVER_SUPPORTS_PM); 114 init->MaxIoCommands = cpu_to_le32(dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); 115 init->MaxIoSize = cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9); 116 init->MaxFibSize = cpu_to_le32(dev->max_fib_size); 117 118 /* 119 * Increment the base address by the amount already used 120 */ 121 base = base + fibsize + sizeof(struct aac_init); 122 phys = (dma_addr_t)((ulong)phys + fibsize + sizeof(struct aac_init)); 123 /* 124 * Align the beginning of Headers to commalign 125 */ 126 align = (commalign - ((uintptr_t)(base) & (commalign - 1))); 127 base = base + align; 128 phys = phys + align; 129 /* 130 * Fill in addresses of the Comm Area Headers and Queues 131 */ 132 *commaddr = base; 133 init->CommHeaderAddress = cpu_to_le32((u32)phys); 134 /* 135 * Increment the base address by the size of the CommArea 136 */ 137 base = base + commsize; 138 phys = phys + commsize; 139 /* 140 * Place the Printf buffer area after the Fast I/O comm area. 141 */ 142 dev->printfbuf = (void *)base; 143 init->printfbuf = cpu_to_le32(phys); 144 init->printfbufsiz = cpu_to_le32(printfbufsiz); 145 memset(base, 0, printfbufsiz); 146 return 1; 147} 148 149static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize) 150{ 151 q->numpending = 0; 152 q->dev = dev; 153 init_waitqueue_head(&q->cmdready); 154 INIT_LIST_HEAD(&q->cmdq); 155 init_waitqueue_head(&q->qfull); 156 spin_lock_init(&q->lockdata); 157 q->lock = &q->lockdata; 158 q->headers.producer = (__le32 *)mem; 159 q->headers.consumer = (__le32 *)(mem+1); 160 *(q->headers.producer) = cpu_to_le32(qsize); 161 *(q->headers.consumer) = cpu_to_le32(qsize); 162 q->entries = qsize; 163} 164 165/** 166 * aac_send_shutdown - shutdown an adapter 167 * @dev: Adapter to shutdown 168 * 169 * This routine will send a VM_CloseAll (shutdown) request to the adapter. 170 */ 171 172int aac_send_shutdown(struct aac_dev * dev) 173{ 174 struct fib * fibctx; 175 struct aac_close *cmd; 176 int status; 177 178 fibctx = aac_fib_alloc(dev); 179 if (!fibctx) 180 return -ENOMEM; 181 aac_fib_init(fibctx); 182 183 cmd = (struct aac_close *) fib_data(fibctx); 184 185 cmd->command = cpu_to_le32(VM_CloseAll); 186 cmd->cid = cpu_to_le32(0xffffffff); 187 188 status = aac_fib_send(ContainerCommand, 189 fibctx, 190 sizeof(struct aac_close), 191 FsaNormal, 192 -2 /* Timeout silently */, 1, 193 NULL, NULL); 194 195 if (status >= 0) 196 aac_fib_complete(fibctx); 197 /* FIB should be freed only after getting the response from the F/W */ 198 if (status != -ERESTARTSYS) 199 aac_fib_free(fibctx); 200 return status; 201} 202 203/** 204 * aac_comm_init - Initialise FSA data structures 205 * @dev: Adapter to initialise 206 * 207 * Initializes the data structures that are required for the FSA commuication 208 * interface to operate. 209 * Returns 210 * 1 - if we were able to init the commuication interface. 211 * 0 - If there were errors initing. This is a fatal error. 212 */ 213 214static int aac_comm_init(struct aac_dev * dev) 215{ 216 unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2; 217 unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES; 218 u32 *headers; 219 struct aac_entry * queues; 220 unsigned long size; 221 struct aac_queue_block * comm = dev->queues; 222 /* 223 * Now allocate and initialize the zone structures used as our 224 * pool of FIB context records. The size of the zone is based 225 * on the system memory size. We also initialize the mutex used 226 * to protect the zone. 227 */ 228 spin_lock_init(&dev->fib_lock); 229 230 /* 231 * Allocate the physically contiguous space for the commuication 232 * queue headers. 233 */ 234 235 size = hdrsize + queuesize; 236 237 if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT)) 238 return -ENOMEM; 239 240 queues = (struct aac_entry *)(((ulong)headers) + hdrsize); 241 242 /* Adapter to Host normal priority Command queue */ 243 comm->queue[HostNormCmdQueue].base = queues; 244 aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES); 245 queues += HOST_NORM_CMD_ENTRIES; 246 headers += 2; 247 248 /* Adapter to Host high priority command queue */ 249 comm->queue[HostHighCmdQueue].base = queues; 250 aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES); 251 252 queues += HOST_HIGH_CMD_ENTRIES; 253 headers +=2; 254 255 /* Host to adapter normal priority command queue */ 256 comm->queue[AdapNormCmdQueue].base = queues; 257 aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES); 258 259 queues += ADAP_NORM_CMD_ENTRIES; 260 headers += 2; 261 262 /* host to adapter high priority command queue */ 263 comm->queue[AdapHighCmdQueue].base = queues; 264 aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES); 265 266 queues += ADAP_HIGH_CMD_ENTRIES; 267 headers += 2; 268 269 /* adapter to host normal priority response queue */ 270 comm->queue[HostNormRespQueue].base = queues; 271 aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES); 272 queues += HOST_NORM_RESP_ENTRIES; 273 headers += 2; 274 275 /* adapter to host high priority response queue */ 276 comm->queue[HostHighRespQueue].base = queues; 277 aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES); 278 279 queues += HOST_HIGH_RESP_ENTRIES; 280 headers += 2; 281 282 /* host to adapter normal priority response queue */ 283 comm->queue[AdapNormRespQueue].base = queues; 284 aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES); 285 286 queues += ADAP_NORM_RESP_ENTRIES; 287 headers += 2; 288 289 /* host to adapter high priority response queue */ 290 comm->queue[AdapHighRespQueue].base = queues; 291 aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES); 292 293 comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock; 294 comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock; 295 comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock; 296 comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock; 297 298 return 0; 299} 300 301struct aac_dev *aac_init_adapter(struct aac_dev *dev) 302{ 303 u32 status[5]; 304 struct Scsi_Host * host = dev->scsi_host_ptr; 305 306 /* 307 * Check the preferred comm settings, defaults from template. 308 */ 309 dev->management_fib_count = 0; 310 spin_lock_init(&dev->manage_lock); 311 dev->max_fib_size = sizeof(struct hw_fib); 312 dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size 313 - sizeof(struct aac_fibhdr) 314 - sizeof(struct aac_write) + sizeof(struct sgentry)) 315 / sizeof(struct sgentry); 316 dev->comm_interface = AAC_COMM_PRODUCER; 317 dev->raw_io_64 = 0; 318 if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES, 319 0, 0, 0, 0, 0, 0, status+0, status+1, status+2, NULL, NULL)) && 320 (status[0] == 0x00000001)) { 321 if (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_64)) 322 dev->raw_io_64 = 1; 323 if (dev->a_ops.adapter_comm && 324 (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM))) 325 dev->comm_interface = AAC_COMM_MESSAGE; 326 if ((dev->comm_interface == AAC_COMM_MESSAGE) && 327 (status[2] > dev->base_size)) { 328 aac_adapter_ioremap(dev, 0); 329 dev->base_size = status[2]; 330 if (aac_adapter_ioremap(dev, status[2])) { 331 /* remap failed, go back ... */ 332 dev->comm_interface = AAC_COMM_PRODUCER; 333 if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) { 334 printk(KERN_WARNING 335 "aacraid: unable to map adapter.\n"); 336 return NULL; 337 } 338 } 339 } 340 } 341 if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS, 342 0, 0, 0, 0, 0, 0, 343 status+0, status+1, status+2, status+3, status+4)) 344 && (status[0] == 0x00000001)) { 345 /* 346 * status[1] >> 16 maximum command size in KB 347 * status[1] & 0xFFFF maximum FIB size 348 * status[2] >> 16 maximum SG elements to driver 349 * status[2] & 0xFFFF maximum SG elements from driver 350 * status[3] & 0xFFFF maximum number FIBs outstanding 351 */ 352 host->max_sectors = (status[1] >> 16) << 1; 353 dev->max_fib_size = status[1] & 0xFFFF; 354 host->sg_tablesize = status[2] >> 16; 355 dev->sg_tablesize = status[2] & 0xFFFF; 356 host->can_queue = (status[3] & 0xFFFF) - AAC_NUM_MGT_FIB; 357 /* 358 * NOTE: 359 * All these overrides are based on a fixed internal 360 * knowledge and understanding of existing adapters, 361 * acbsize should be set with caution. 362 */ 363 if (acbsize == 512) { 364 host->max_sectors = AAC_MAX_32BIT_SGBCOUNT; 365 dev->max_fib_size = 512; 366 dev->sg_tablesize = host->sg_tablesize 367 = (512 - sizeof(struct aac_fibhdr) 368 - sizeof(struct aac_write) + sizeof(struct sgentry)) 369 / sizeof(struct sgentry); 370 host->can_queue = AAC_NUM_IO_FIB; 371 } else if (acbsize == 2048) { 372 host->max_sectors = 512; 373 dev->max_fib_size = 2048; 374 host->sg_tablesize = 65; 375 dev->sg_tablesize = 81; 376 host->can_queue = 512 - AAC_NUM_MGT_FIB; 377 } else if (acbsize == 4096) { 378 host->max_sectors = 1024; 379 dev->max_fib_size = 4096; 380 host->sg_tablesize = 129; 381 dev->sg_tablesize = 166; 382 host->can_queue = 256 - AAC_NUM_MGT_FIB; 383 } else if (acbsize == 8192) { 384 host->max_sectors = 2048; 385 dev->max_fib_size = 8192; 386 host->sg_tablesize = 257; 387 dev->sg_tablesize = 337; 388 host->can_queue = 128 - AAC_NUM_MGT_FIB; 389 } else if (acbsize > 0) { 390 printk("Illegal acbsize=%d ignored\n", acbsize); 391 } 392 } 393 { 394 395 if (numacb > 0) { 396 if (numacb < host->can_queue) 397 host->can_queue = numacb; 398 else 399 printk("numacb=%d ignored\n", numacb); 400 } 401 } 402 403 /* 404 * Ok now init the communication subsystem 405 */ 406 407 dev->queues = kzalloc(sizeof(struct aac_queue_block), GFP_KERNEL); 408 if (dev->queues == NULL) { 409 printk(KERN_ERR "Error could not allocate comm region.\n"); 410 return NULL; 411 } 412 413 if (aac_comm_init(dev)<0){ 414 kfree(dev->queues); 415 return NULL; 416 } 417 /* 418 * Initialize the list of fibs 419 */ 420 if (aac_fib_setup(dev) < 0) { 421 kfree(dev->queues); 422 return NULL; 423 } 424 425 INIT_LIST_HEAD(&dev->fib_list); 426 427 return dev; 428} 429 430 431