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) 2000-2007 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 #include <asm/semaphore.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 struct aac_init *init; 57 dma_addr_t phys; 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 init->HostPhysMemPages = cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES); 95 96 init->InitFlags = 0; 97 if (dev->comm_interface == AAC_COMM_MESSAGE) { 98 init->InitFlags = cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED); 99 dprintk((KERN_WARNING"aacraid: New Comm Interface enabled\n")); 100 } 101 init->MaxIoCommands = cpu_to_le32(dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); 102 init->MaxIoSize = cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9); 103 init->MaxFibSize = cpu_to_le32(dev->max_fib_size); 104 105 /* 106 * Increment the base address by the amount already used 107 */ 108 base = base + fibsize + sizeof(struct aac_init); 109 phys = (dma_addr_t)((ulong)phys + fibsize + sizeof(struct aac_init)); 110 /* 111 * Align the beginning of Headers to commalign 112 */ 113 align = (commalign - ((uintptr_t)(base) & (commalign - 1))); 114 base = base + align; 115 phys = phys + align; 116 /* 117 * Fill in addresses of the Comm Area Headers and Queues 118 */ 119 *commaddr = base; 120 init->CommHeaderAddress = cpu_to_le32((u32)phys); 121 /* 122 * Increment the base address by the size of the CommArea 123 */ 124 base = base + commsize; 125 phys = phys + commsize; 126 /* 127 * Place the Printf buffer area after the Fast I/O comm area. 128 */ 129 dev->printfbuf = (void *)base; 130 init->printfbuf = cpu_to_le32(phys); 131 init->printfbufsiz = cpu_to_le32(printfbufsiz); 132 memset(base, 0, printfbufsiz); 133 return 1; 134 } 135 136 static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize) 137 { 138 q->numpending = 0; 139 q->dev = dev; 140 init_waitqueue_head(&q->cmdready); 141 INIT_LIST_HEAD(&q->cmdq); 142 init_waitqueue_head(&q->qfull); 143 spin_lock_init(&q->lockdata); 144 q->lock = &q->lockdata; 145 q->headers.producer = (__le32 *)mem; 146 q->headers.consumer = (__le32 *)(mem+1); 147 *(q->headers.producer) = cpu_to_le32(qsize); 148 *(q->headers.consumer) = cpu_to_le32(qsize); 149 q->entries = qsize; 150 } 151 152 /** 153 * aac_send_shutdown - shutdown an adapter 154 * @dev: Adapter to shutdown 155 * 156 * This routine will send a VM_CloseAll (shutdown) request to the adapter. 157 */ 158 159 int aac_send_shutdown(struct aac_dev * dev) 160 { 161 struct fib * fibctx; 162 struct aac_close *cmd; 163 int status; 164 165 fibctx = aac_fib_alloc(dev); 166 if (!fibctx) 167 return -ENOMEM; 168 aac_fib_init(fibctx); 169 170 cmd = (struct aac_close *) fib_data(fibctx); 171 172 cmd->command = cpu_to_le32(VM_CloseAll); 173 cmd->cid = cpu_to_le32(0xffffffff); 174 175 status = aac_fib_send(ContainerCommand, 176 fibctx, 177 sizeof(struct aac_close), 178 FsaNormal, 179 -2 /* Timeout silently */, 1, 180 NULL, NULL); 181 182 if (status >= 0) 183 aac_fib_complete(fibctx); 184 aac_fib_free(fibctx); 185 return status; 186 } 187 188 /** 189 * aac_comm_init - Initialise FSA data structures 190 * @dev: Adapter to initialise 191 * 192 * Initializes the data structures that are required for the FSA commuication 193 * interface to operate. 194 * Returns 195 * 1 - if we were able to init the commuication interface. 196 * 0 - If there were errors initing. This is a fatal error. 197 */ 198 199 static int aac_comm_init(struct aac_dev * dev) 200 { 201 unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2; 202 unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES; 203 u32 *headers; 204 struct aac_entry * queues; 205 unsigned long size; 206 struct aac_queue_block * comm = dev->queues; 207 /* 208 * Now allocate and initialize the zone structures used as our 209 * pool of FIB context records. The size of the zone is based 210 * on the system memory size. We also initialize the mutex used 211 * to protect the zone. 212 */ 213 spin_lock_init(&dev->fib_lock); 214 215 /* 216 * Allocate the physically contigous space for the commuication 217 * queue headers. 218 */ 219 220 size = hdrsize + queuesize; 221 222 if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT)) 223 return -ENOMEM; 224 225 queues = (struct aac_entry *)(((ulong)headers) + hdrsize); 226 227 /* Adapter to Host normal priority Command queue */ 228 comm->queue[HostNormCmdQueue].base = queues; 229 aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES); 230 queues += HOST_NORM_CMD_ENTRIES; 231 headers += 2; 232 233 /* Adapter to Host high priority command queue */ 234 comm->queue[HostHighCmdQueue].base = queues; 235 aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES); 236 237 queues += HOST_HIGH_CMD_ENTRIES; 238 headers +=2; 239 240 /* Host to adapter normal priority command queue */ 241 comm->queue[AdapNormCmdQueue].base = queues; 242 aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES); 243 244 queues += ADAP_NORM_CMD_ENTRIES; 245 headers += 2; 246 247 /* host to adapter high priority command queue */ 248 comm->queue[AdapHighCmdQueue].base = queues; 249 aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES); 250 251 queues += ADAP_HIGH_CMD_ENTRIES; 252 headers += 2; 253 254 /* adapter to host normal priority response queue */ 255 comm->queue[HostNormRespQueue].base = queues; 256 aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES); 257 queues += HOST_NORM_RESP_ENTRIES; 258 headers += 2; 259 260 /* adapter to host high priority response queue */ 261 comm->queue[HostHighRespQueue].base = queues; 262 aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES); 263 264 queues += HOST_HIGH_RESP_ENTRIES; 265 headers += 2; 266 267 /* host to adapter normal priority response queue */ 268 comm->queue[AdapNormRespQueue].base = queues; 269 aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES); 270 271 queues += ADAP_NORM_RESP_ENTRIES; 272 headers += 2; 273 274 /* host to adapter high priority response queue */ 275 comm->queue[AdapHighRespQueue].base = queues; 276 aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES); 277 278 comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock; 279 comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock; 280 comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock; 281 comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock; 282 283 return 0; 284 } 285 286 struct aac_dev *aac_init_adapter(struct aac_dev *dev) 287 { 288 u32 status[5]; 289 struct Scsi_Host * host = dev->scsi_host_ptr; 290 291 /* 292 * Check the preferred comm settings, defaults from template. 293 */ 294 dev->max_fib_size = sizeof(struct hw_fib); 295 dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size 296 - sizeof(struct aac_fibhdr) 297 - sizeof(struct aac_write) + sizeof(struct sgentry)) 298 / sizeof(struct sgentry); 299 dev->comm_interface = AAC_COMM_PRODUCER; 300 dev->raw_io_64 = 0; 301 if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES, 302 0, 0, 0, 0, 0, 0, status+0, status+1, status+2, NULL, NULL)) && 303 (status[0] == 0x00000001)) { 304 if (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_64)) 305 dev->raw_io_64 = 1; 306 if (dev->a_ops.adapter_comm && 307 (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM))) 308 dev->comm_interface = AAC_COMM_MESSAGE; 309 if ((dev->comm_interface == AAC_COMM_MESSAGE) && 310 (status[2] > dev->base_size)) { 311 aac_adapter_ioremap(dev, 0); 312 dev->base_size = status[2]; 313 if (aac_adapter_ioremap(dev, status[2])) { 314 /* remap failed, go back ... */ 315 dev->comm_interface = AAC_COMM_PRODUCER; 316 if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) { 317 printk(KERN_WARNING 318 "aacraid: unable to map adapter.\n"); 319 return NULL; 320 } 321 } 322 } 323 } 324 if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS, 325 0, 0, 0, 0, 0, 0, 326 status+0, status+1, status+2, status+3, status+4)) 327 && (status[0] == 0x00000001)) { 328 /* 329 * status[1] >> 16 maximum command size in KB 330 * status[1] & 0xFFFF maximum FIB size 331 * status[2] >> 16 maximum SG elements to driver 332 * status[2] & 0xFFFF maximum SG elements from driver 333 * status[3] & 0xFFFF maximum number FIBs outstanding 334 */ 335 host->max_sectors = (status[1] >> 16) << 1; 336 dev->max_fib_size = status[1] & 0xFFFF; 337 host->sg_tablesize = status[2] >> 16; 338 dev->sg_tablesize = status[2] & 0xFFFF; 339 host->can_queue = (status[3] & 0xFFFF) - AAC_NUM_MGT_FIB; 340 /* 341 * NOTE: 342 * All these overrides are based on a fixed internal 343 * knowledge and understanding of existing adapters, 344 * acbsize should be set with caution. 345 */ 346 if (acbsize == 512) { 347 host->max_sectors = AAC_MAX_32BIT_SGBCOUNT; 348 dev->max_fib_size = 512; 349 dev->sg_tablesize = host->sg_tablesize 350 = (512 - sizeof(struct aac_fibhdr) 351 - sizeof(struct aac_write) + sizeof(struct sgentry)) 352 / sizeof(struct sgentry); 353 host->can_queue = AAC_NUM_IO_FIB; 354 } else if (acbsize == 2048) { 355 host->max_sectors = 512; 356 dev->max_fib_size = 2048; 357 host->sg_tablesize = 65; 358 dev->sg_tablesize = 81; 359 host->can_queue = 512 - AAC_NUM_MGT_FIB; 360 } else if (acbsize == 4096) { 361 host->max_sectors = 1024; 362 dev->max_fib_size = 4096; 363 host->sg_tablesize = 129; 364 dev->sg_tablesize = 166; 365 host->can_queue = 256 - AAC_NUM_MGT_FIB; 366 } else if (acbsize == 8192) { 367 host->max_sectors = 2048; 368 dev->max_fib_size = 8192; 369 host->sg_tablesize = 257; 370 dev->sg_tablesize = 337; 371 host->can_queue = 128 - AAC_NUM_MGT_FIB; 372 } else if (acbsize > 0) { 373 printk("Illegal acbsize=%d ignored\n", acbsize); 374 } 375 } 376 { 377 378 if (numacb > 0) { 379 if (numacb < host->can_queue) 380 host->can_queue = numacb; 381 else 382 printk("numacb=%d ignored\n", numacb); 383 } 384 } 385 386 /* 387 * Ok now init the communication subsystem 388 */ 389 390 dev->queues = kzalloc(sizeof(struct aac_queue_block), GFP_KERNEL); 391 if (dev->queues == NULL) { 392 printk(KERN_ERR "Error could not allocate comm region.\n"); 393 return NULL; 394 } 395 396 if (aac_comm_init(dev)<0){ 397 kfree(dev->queues); 398 return NULL; 399 } 400 /* 401 * Initialize the list of fibs 402 */ 403 if (aac_fib_setup(dev) < 0) { 404 kfree(dev->queues); 405 return NULL; 406 } 407 408 INIT_LIST_HEAD(&dev->fib_list); 409 410 return dev; 411 } 412 413 414