1 /* 2 * Adaptec AAC series RAID controller driver 3 * (c) Copyright 2001 Red Hat Inc. <alan@redhat.com> 4 * 5 * based on the old aacraid driver that is.. 6 * Adaptec aacraid device driver for Linux. 7 * 8 * Copyright (c) 2000 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/sched.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 #include <asm/semaphore.h> 44 45 #include "aacraid.h" 46 47 struct aac_common aac_config = { 48 .irq_mod = 1 49 }; 50 51 static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long commsize, unsigned long commalign) 52 { 53 unsigned char *base; 54 unsigned long size, align; 55 const unsigned long fibsize = 4096; 56 const unsigned long printfbufsiz = 256; 57 struct aac_init *init; 58 dma_addr_t phys; 59 60 size = fibsize + sizeof(struct aac_init) + commsize + commalign + printfbufsiz; 61 62 63 base = pci_alloc_consistent(dev->pdev, size, &phys); 64 65 if(base == NULL) 66 { 67 printk(KERN_ERR "aacraid: unable to create mapping.\n"); 68 return 0; 69 } 70 dev->comm_addr = (void *)base; 71 dev->comm_phys = phys; 72 dev->comm_size = size; 73 74 dev->init = (struct aac_init *)(base + fibsize); 75 dev->init_pa = phys + fibsize; 76 77 init = dev->init; 78 79 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION); 80 if (dev->max_fib_size != sizeof(struct hw_fib)) 81 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4); 82 init->MiniPortRevision = cpu_to_le32(Sa_MINIPORT_REVISION); 83 init->fsrev = cpu_to_le32(dev->fsrev); 84 85 /* 86 * Adapter Fibs are the first thing allocated so that they 87 * start page aligned 88 */ 89 dev->aif_base_va = (struct hw_fib *)base; 90 91 init->AdapterFibsVirtualAddress = 0; 92 init->AdapterFibsPhysicalAddress = cpu_to_le32((u32)phys); 93 init->AdapterFibsSize = cpu_to_le32(fibsize); 94 init->AdapterFibAlign = cpu_to_le32(sizeof(struct hw_fib)); 95 /* 96 * number of 4k pages of host physical memory. The aacraid fw needs 97 * this number to be less than 4gb worth of pages. num_physpages is in 98 * system page units. New firmware doesn't have any issues with the 99 * mapping system, but older Firmware did, and had *troubles* dealing 100 * with the math overloading past 32 bits, thus we must limit this 101 * field. 102 * 103 * This assumes the memory is mapped zero->n, which isnt 104 * always true on real computers. It also has some slight problems 105 * with the GART on x86-64. I've btw never tried DMA from PCI space 106 * on this platform but don't be surprised if its problematic. 107 * [AK: something is very very wrong when a driver tests this symbol. 108 * Someone should figure out what the comment writer really meant here and fix 109 * the code. Or just remove that bad code. ] 110 */ 111 #ifndef CONFIG_IOMMU 112 if ((num_physpages << (PAGE_SHIFT - 12)) <= AAC_MAX_HOSTPHYSMEMPAGES) { 113 init->HostPhysMemPages = 114 cpu_to_le32(num_physpages << (PAGE_SHIFT-12)); 115 } else 116 #endif 117 { 118 init->HostPhysMemPages = cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES); 119 } 120 121 init->InitFlags = 0; 122 if (dev->new_comm_interface) { 123 init->InitFlags = cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED); 124 dprintk((KERN_WARNING"aacraid: New Comm Interface enabled\n")); 125 } 126 init->MaxIoCommands = cpu_to_le32(dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); 127 init->MaxIoSize = cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9); 128 init->MaxFibSize = cpu_to_le32(dev->max_fib_size); 129 130 /* 131 * Increment the base address by the amount already used 132 */ 133 base = base + fibsize + sizeof(struct aac_init); 134 phys = (dma_addr_t)((ulong)phys + fibsize + sizeof(struct aac_init)); 135 /* 136 * Align the beginning of Headers to commalign 137 */ 138 align = (commalign - ((unsigned long)(base) & (commalign - 1))); 139 base = base + align; 140 phys = phys + align; 141 /* 142 * Fill in addresses of the Comm Area Headers and Queues 143 */ 144 *commaddr = base; 145 init->CommHeaderAddress = cpu_to_le32((u32)phys); 146 /* 147 * Increment the base address by the size of the CommArea 148 */ 149 base = base + commsize; 150 phys = phys + commsize; 151 /* 152 * Place the Printf buffer area after the Fast I/O comm area. 153 */ 154 dev->printfbuf = (void *)base; 155 init->printfbuf = cpu_to_le32(phys); 156 init->printfbufsiz = cpu_to_le32(printfbufsiz); 157 memset(base, 0, printfbufsiz); 158 return 1; 159 } 160 161 static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize) 162 { 163 q->numpending = 0; 164 q->dev = dev; 165 init_waitqueue_head(&q->cmdready); 166 INIT_LIST_HEAD(&q->cmdq); 167 init_waitqueue_head(&q->qfull); 168 spin_lock_init(&q->lockdata); 169 q->lock = &q->lockdata; 170 q->headers.producer = (__le32 *)mem; 171 q->headers.consumer = (__le32 *)(mem+1); 172 *(q->headers.producer) = cpu_to_le32(qsize); 173 *(q->headers.consumer) = cpu_to_le32(qsize); 174 q->entries = qsize; 175 } 176 177 /** 178 * aac_send_shutdown - shutdown an adapter 179 * @dev: Adapter to shutdown 180 * 181 * This routine will send a VM_CloseAll (shutdown) request to the adapter. 182 */ 183 184 int aac_send_shutdown(struct aac_dev * dev) 185 { 186 struct fib * fibctx; 187 struct aac_close *cmd; 188 int status; 189 190 fibctx = aac_fib_alloc(dev); 191 if (!fibctx) 192 return -ENOMEM; 193 aac_fib_init(fibctx); 194 195 cmd = (struct aac_close *) fib_data(fibctx); 196 197 cmd->command = cpu_to_le32(VM_CloseAll); 198 cmd->cid = cpu_to_le32(0xffffffff); 199 200 status = aac_fib_send(ContainerCommand, 201 fibctx, 202 sizeof(struct aac_close), 203 FsaNormal, 204 -2 /* Timeout silently */, 1, 205 NULL, NULL); 206 207 if (status == 0) 208 aac_fib_complete(fibctx); 209 aac_fib_free(fibctx); 210 return status; 211 } 212 213 /** 214 * aac_comm_init - Initialise FSA data structures 215 * @dev: Adapter to initialise 216 * 217 * Initializes the data structures that are required for the FSA commuication 218 * interface to operate. 219 * Returns 220 * 1 - if we were able to init the commuication interface. 221 * 0 - If there were errors initing. This is a fatal error. 222 */ 223 224 static int aac_comm_init(struct aac_dev * dev) 225 { 226 unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2; 227 unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES; 228 u32 *headers; 229 struct aac_entry * queues; 230 unsigned long size; 231 struct aac_queue_block * comm = dev->queues; 232 /* 233 * Now allocate and initialize the zone structures used as our 234 * pool of FIB context records. The size of the zone is based 235 * on the system memory size. We also initialize the mutex used 236 * to protect the zone. 237 */ 238 spin_lock_init(&dev->fib_lock); 239 240 /* 241 * Allocate the physically contigous space for the commuication 242 * queue headers. 243 */ 244 245 size = hdrsize + queuesize; 246 247 if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT)) 248 return -ENOMEM; 249 250 queues = (struct aac_entry *)(((ulong)headers) + hdrsize); 251 252 /* Adapter to Host normal priority Command queue */ 253 comm->queue[HostNormCmdQueue].base = queues; 254 aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES); 255 queues += HOST_NORM_CMD_ENTRIES; 256 headers += 2; 257 258 /* Adapter to Host high priority command queue */ 259 comm->queue[HostHighCmdQueue].base = queues; 260 aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES); 261 262 queues += HOST_HIGH_CMD_ENTRIES; 263 headers +=2; 264 265 /* Host to adapter normal priority command queue */ 266 comm->queue[AdapNormCmdQueue].base = queues; 267 aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES); 268 269 queues += ADAP_NORM_CMD_ENTRIES; 270 headers += 2; 271 272 /* host to adapter high priority command queue */ 273 comm->queue[AdapHighCmdQueue].base = queues; 274 aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES); 275 276 queues += ADAP_HIGH_CMD_ENTRIES; 277 headers += 2; 278 279 /* adapter to host normal priority response queue */ 280 comm->queue[HostNormRespQueue].base = queues; 281 aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES); 282 queues += HOST_NORM_RESP_ENTRIES; 283 headers += 2; 284 285 /* adapter to host high priority response queue */ 286 comm->queue[HostHighRespQueue].base = queues; 287 aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES); 288 289 queues += HOST_HIGH_RESP_ENTRIES; 290 headers += 2; 291 292 /* host to adapter normal priority response queue */ 293 comm->queue[AdapNormRespQueue].base = queues; 294 aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES); 295 296 queues += ADAP_NORM_RESP_ENTRIES; 297 headers += 2; 298 299 /* host to adapter high priority response queue */ 300 comm->queue[AdapHighRespQueue].base = queues; 301 aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES); 302 303 comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock; 304 comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock; 305 comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock; 306 comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock; 307 308 return 0; 309 } 310 311 struct aac_dev *aac_init_adapter(struct aac_dev *dev) 312 { 313 u32 status[5]; 314 struct Scsi_Host * host = dev->scsi_host_ptr; 315 316 /* 317 * Check the preferred comm settings, defaults from template. 318 */ 319 dev->max_fib_size = sizeof(struct hw_fib); 320 dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size 321 - sizeof(struct aac_fibhdr) 322 - sizeof(struct aac_write) + sizeof(struct sgentry)) 323 / sizeof(struct sgentry); 324 dev->new_comm_interface = 0; 325 dev->raw_io_64 = 0; 326 if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES, 327 0, 0, 0, 0, 0, 0, status+0, status+1, status+2, NULL, NULL)) && 328 (status[0] == 0x00000001)) { 329 if (status[1] & AAC_OPT_NEW_COMM_64) 330 dev->raw_io_64 = 1; 331 if (status[1] & AAC_OPT_NEW_COMM) 332 dev->new_comm_interface = dev->a_ops.adapter_send != 0; 333 if (dev->new_comm_interface && (status[2] > dev->base_size)) { 334 iounmap(dev->regs.sa); 335 dev->base_size = status[2]; 336 dprintk((KERN_DEBUG "ioremap(%lx,%d)\n", 337 host->base, status[2])); 338 dev->regs.sa = ioremap(host->base, status[2]); 339 if (dev->regs.sa == NULL) { 340 /* remap failed, go back ... */ 341 dev->new_comm_interface = 0; 342 dev->regs.sa = ioremap(host->base, 343 AAC_MIN_FOOTPRINT_SIZE); 344 if (dev->regs.sa == NULL) { 345 printk(KERN_WARNING 346 "aacraid: unable to map adapter.\n"); 347 return NULL; 348 } 349 } 350 } 351 } 352 if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS, 353 0, 0, 0, 0, 0, 0, 354 status+0, status+1, status+2, status+3, status+4)) 355 && (status[0] == 0x00000001)) { 356 /* 357 * status[1] >> 16 maximum command size in KB 358 * status[1] & 0xFFFF maximum FIB size 359 * status[2] >> 16 maximum SG elements to driver 360 * status[2] & 0xFFFF maximum SG elements from driver 361 * status[3] & 0xFFFF maximum number FIBs outstanding 362 */ 363 host->max_sectors = (status[1] >> 16) << 1; 364 dev->max_fib_size = status[1] & 0xFFFF; 365 host->sg_tablesize = status[2] >> 16; 366 dev->sg_tablesize = status[2] & 0xFFFF; 367 host->can_queue = (status[3] & 0xFFFF) - AAC_NUM_MGT_FIB; 368 /* 369 * NOTE: 370 * All these overrides are based on a fixed internal 371 * knowledge and understanding of existing adapters, 372 * acbsize should be set with caution. 373 */ 374 if (acbsize == 512) { 375 host->max_sectors = AAC_MAX_32BIT_SGBCOUNT; 376 dev->max_fib_size = 512; 377 dev->sg_tablesize = host->sg_tablesize 378 = (512 - sizeof(struct aac_fibhdr) 379 - sizeof(struct aac_write) + sizeof(struct sgentry)) 380 / sizeof(struct sgentry); 381 host->can_queue = AAC_NUM_IO_FIB; 382 } else if (acbsize == 2048) { 383 host->max_sectors = 512; 384 dev->max_fib_size = 2048; 385 host->sg_tablesize = 65; 386 dev->sg_tablesize = 81; 387 host->can_queue = 512 - AAC_NUM_MGT_FIB; 388 } else if (acbsize == 4096) { 389 host->max_sectors = 1024; 390 dev->max_fib_size = 4096; 391 host->sg_tablesize = 129; 392 dev->sg_tablesize = 166; 393 host->can_queue = 256 - AAC_NUM_MGT_FIB; 394 } else if (acbsize == 8192) { 395 host->max_sectors = 2048; 396 dev->max_fib_size = 8192; 397 host->sg_tablesize = 257; 398 dev->sg_tablesize = 337; 399 host->can_queue = 128 - AAC_NUM_MGT_FIB; 400 } else if (acbsize > 0) { 401 printk("Illegal acbsize=%d ignored\n", acbsize); 402 } 403 } 404 { 405 406 if (numacb > 0) { 407 if (numacb < host->can_queue) 408 host->can_queue = numacb; 409 else 410 printk("numacb=%d ignored\n", numacb); 411 } 412 } 413 414 /* 415 * Ok now init the communication subsystem 416 */ 417 418 dev->queues = (struct aac_queue_block *) kmalloc(sizeof(struct aac_queue_block), GFP_KERNEL); 419 if (dev->queues == NULL) { 420 printk(KERN_ERR "Error could not allocate comm region.\n"); 421 return NULL; 422 } 423 memset(dev->queues, 0, sizeof(struct aac_queue_block)); 424 425 if (aac_comm_init(dev)<0){ 426 kfree(dev->queues); 427 return NULL; 428 } 429 /* 430 * Initialize the list of fibs 431 */ 432 if (aac_fib_setup(dev) < 0) { 433 kfree(dev->queues); 434 return NULL; 435 } 436 437 INIT_LIST_HEAD(&dev->fib_list); 438 439 return dev; 440 } 441 442 443