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 43 #include "aacraid.h" 44 45 struct aac_common aac_config = { 46 .irq_mod = 1 47 }; 48 49 static 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 58 size = fibsize + sizeof(struct aac_init) + commsize + commalign + printfbufsiz; 59 60 61 base = pci_alloc_consistent(dev->pdev, size, &phys); 62 63 if(base == NULL) 64 { 65 printk(KERN_ERR "aacraid: unable to create mapping.\n"); 66 return 0; 67 } 68 dev->comm_addr = (void *)base; 69 dev->comm_phys = phys; 70 dev->comm_size = size; 71 72 dev->init = (struct aac_init *)(base + fibsize); 73 dev->init_pa = phys + fibsize; 74 75 init = dev->init; 76 77 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION); 78 if (dev->max_fib_size != sizeof(struct hw_fib)) 79 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4); 80 init->MiniPortRevision = cpu_to_le32(Sa_MINIPORT_REVISION); 81 init->fsrev = cpu_to_le32(dev->fsrev); 82 83 /* 84 * Adapter Fibs are the first thing allocated so that they 85 * start page aligned 86 */ 87 dev->aif_base_va = (struct hw_fib *)base; 88 89 init->AdapterFibsVirtualAddress = 0; 90 init->AdapterFibsPhysicalAddress = cpu_to_le32((u32)phys); 91 init->AdapterFibsSize = cpu_to_le32(fibsize); 92 init->AdapterFibAlign = cpu_to_le32(sizeof(struct hw_fib)); 93 init->HostPhysMemPages = cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES); 94 95 init->InitFlags = 0; 96 if (dev->comm_interface == AAC_COMM_MESSAGE) { 97 init->InitFlags = cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED); 98 dprintk((KERN_WARNING"aacraid: New Comm Interface enabled\n")); 99 } 100 init->InitFlags |= cpu_to_le32(INITFLAGS_DRIVER_USES_UTC_TIME | 101 INITFLAGS_DRIVER_SUPPORTS_PM); 102 init->MaxIoCommands = cpu_to_le32(dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); 103 init->MaxIoSize = cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9); 104 init->MaxFibSize = cpu_to_le32(dev->max_fib_size); 105 106 /* 107 * Increment the base address by the amount already used 108 */ 109 base = base + fibsize + sizeof(struct aac_init); 110 phys = (dma_addr_t)((ulong)phys + fibsize + sizeof(struct aac_init)); 111 /* 112 * Align the beginning of Headers to commalign 113 */ 114 align = (commalign - ((uintptr_t)(base) & (commalign - 1))); 115 base = base + align; 116 phys = phys + align; 117 /* 118 * Fill in addresses of the Comm Area Headers and Queues 119 */ 120 *commaddr = base; 121 init->CommHeaderAddress = cpu_to_le32((u32)phys); 122 /* 123 * Increment the base address by the size of the CommArea 124 */ 125 base = base + commsize; 126 phys = phys + commsize; 127 /* 128 * Place the Printf buffer area after the Fast I/O comm area. 129 */ 130 dev->printfbuf = (void *)base; 131 init->printfbuf = cpu_to_le32(phys); 132 init->printfbufsiz = cpu_to_le32(printfbufsiz); 133 memset(base, 0, printfbufsiz); 134 return 1; 135 } 136 137 static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize) 138 { 139 q->numpending = 0; 140 q->dev = dev; 141 init_waitqueue_head(&q->cmdready); 142 INIT_LIST_HEAD(&q->cmdq); 143 init_waitqueue_head(&q->qfull); 144 spin_lock_init(&q->lockdata); 145 q->lock = &q->lockdata; 146 q->headers.producer = (__le32 *)mem; 147 q->headers.consumer = (__le32 *)(mem+1); 148 *(q->headers.producer) = cpu_to_le32(qsize); 149 *(q->headers.consumer) = cpu_to_le32(qsize); 150 q->entries = qsize; 151 } 152 153 /** 154 * aac_send_shutdown - shutdown an adapter 155 * @dev: Adapter to shutdown 156 * 157 * This routine will send a VM_CloseAll (shutdown) request to the adapter. 158 */ 159 160 int aac_send_shutdown(struct aac_dev * dev) 161 { 162 struct fib * fibctx; 163 struct aac_close *cmd; 164 int status; 165 166 fibctx = aac_fib_alloc(dev); 167 if (!fibctx) 168 return -ENOMEM; 169 aac_fib_init(fibctx); 170 171 cmd = (struct aac_close *) fib_data(fibctx); 172 173 cmd->command = cpu_to_le32(VM_CloseAll); 174 cmd->cid = cpu_to_le32(0xffffffff); 175 176 status = aac_fib_send(ContainerCommand, 177 fibctx, 178 sizeof(struct aac_close), 179 FsaNormal, 180 -2 /* Timeout silently */, 1, 181 NULL, NULL); 182 183 if (status >= 0) 184 aac_fib_complete(fibctx); 185 aac_fib_free(fibctx); 186 return status; 187 } 188 189 /** 190 * aac_comm_init - Initialise FSA data structures 191 * @dev: Adapter to initialise 192 * 193 * Initializes the data structures that are required for the FSA commuication 194 * interface to operate. 195 * Returns 196 * 1 - if we were able to init the commuication interface. 197 * 0 - If there were errors initing. This is a fatal error. 198 */ 199 200 static int aac_comm_init(struct aac_dev * dev) 201 { 202 unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2; 203 unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES; 204 u32 *headers; 205 struct aac_entry * queues; 206 unsigned long size; 207 struct aac_queue_block * comm = dev->queues; 208 /* 209 * Now allocate and initialize the zone structures used as our 210 * pool of FIB context records. The size of the zone is based 211 * on the system memory size. We also initialize the mutex used 212 * to protect the zone. 213 */ 214 spin_lock_init(&dev->fib_lock); 215 216 /* 217 * Allocate the physically contigous space for the commuication 218 * queue headers. 219 */ 220 221 size = hdrsize + queuesize; 222 223 if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT)) 224 return -ENOMEM; 225 226 queues = (struct aac_entry *)(((ulong)headers) + hdrsize); 227 228 /* Adapter to Host normal priority Command queue */ 229 comm->queue[HostNormCmdQueue].base = queues; 230 aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES); 231 queues += HOST_NORM_CMD_ENTRIES; 232 headers += 2; 233 234 /* Adapter to Host high priority command queue */ 235 comm->queue[HostHighCmdQueue].base = queues; 236 aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES); 237 238 queues += HOST_HIGH_CMD_ENTRIES; 239 headers +=2; 240 241 /* Host to adapter normal priority command queue */ 242 comm->queue[AdapNormCmdQueue].base = queues; 243 aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES); 244 245 queues += ADAP_NORM_CMD_ENTRIES; 246 headers += 2; 247 248 /* host to adapter high priority command queue */ 249 comm->queue[AdapHighCmdQueue].base = queues; 250 aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES); 251 252 queues += ADAP_HIGH_CMD_ENTRIES; 253 headers += 2; 254 255 /* adapter to host normal priority response queue */ 256 comm->queue[HostNormRespQueue].base = queues; 257 aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES); 258 queues += HOST_NORM_RESP_ENTRIES; 259 headers += 2; 260 261 /* adapter to host high priority response queue */ 262 comm->queue[HostHighRespQueue].base = queues; 263 aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES); 264 265 queues += HOST_HIGH_RESP_ENTRIES; 266 headers += 2; 267 268 /* host to adapter normal priority response queue */ 269 comm->queue[AdapNormRespQueue].base = queues; 270 aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES); 271 272 queues += ADAP_NORM_RESP_ENTRIES; 273 headers += 2; 274 275 /* host to adapter high priority response queue */ 276 comm->queue[AdapHighRespQueue].base = queues; 277 aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES); 278 279 comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock; 280 comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock; 281 comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock; 282 comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock; 283 284 return 0; 285 } 286 287 struct aac_dev *aac_init_adapter(struct aac_dev *dev) 288 { 289 u32 status[5]; 290 struct Scsi_Host * host = dev->scsi_host_ptr; 291 292 /* 293 * Check the preferred comm settings, defaults from template. 294 */ 295 dev->max_fib_size = sizeof(struct hw_fib); 296 dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size 297 - sizeof(struct aac_fibhdr) 298 - sizeof(struct aac_write) + sizeof(struct sgentry)) 299 / sizeof(struct sgentry); 300 dev->comm_interface = AAC_COMM_PRODUCER; 301 dev->raw_io_64 = 0; 302 if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES, 303 0, 0, 0, 0, 0, 0, status+0, status+1, status+2, NULL, NULL)) && 304 (status[0] == 0x00000001)) { 305 if (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_64)) 306 dev->raw_io_64 = 1; 307 if (dev->a_ops.adapter_comm && 308 (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM))) 309 dev->comm_interface = AAC_COMM_MESSAGE; 310 if ((dev->comm_interface == AAC_COMM_MESSAGE) && 311 (status[2] > dev->base_size)) { 312 aac_adapter_ioremap(dev, 0); 313 dev->base_size = status[2]; 314 if (aac_adapter_ioremap(dev, status[2])) { 315 /* remap failed, go back ... */ 316 dev->comm_interface = AAC_COMM_PRODUCER; 317 if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) { 318 printk(KERN_WARNING 319 "aacraid: unable to map adapter.\n"); 320 return NULL; 321 } 322 } 323 } 324 } 325 if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS, 326 0, 0, 0, 0, 0, 0, 327 status+0, status+1, status+2, status+3, status+4)) 328 && (status[0] == 0x00000001)) { 329 /* 330 * status[1] >> 16 maximum command size in KB 331 * status[1] & 0xFFFF maximum FIB size 332 * status[2] >> 16 maximum SG elements to driver 333 * status[2] & 0xFFFF maximum SG elements from driver 334 * status[3] & 0xFFFF maximum number FIBs outstanding 335 */ 336 host->max_sectors = (status[1] >> 16) << 1; 337 dev->max_fib_size = status[1] & 0xFFFF; 338 host->sg_tablesize = status[2] >> 16; 339 dev->sg_tablesize = status[2] & 0xFFFF; 340 host->can_queue = (status[3] & 0xFFFF) - AAC_NUM_MGT_FIB; 341 /* 342 * NOTE: 343 * All these overrides are based on a fixed internal 344 * knowledge and understanding of existing adapters, 345 * acbsize should be set with caution. 346 */ 347 if (acbsize == 512) { 348 host->max_sectors = AAC_MAX_32BIT_SGBCOUNT; 349 dev->max_fib_size = 512; 350 dev->sg_tablesize = host->sg_tablesize 351 = (512 - sizeof(struct aac_fibhdr) 352 - sizeof(struct aac_write) + sizeof(struct sgentry)) 353 / sizeof(struct sgentry); 354 host->can_queue = AAC_NUM_IO_FIB; 355 } else if (acbsize == 2048) { 356 host->max_sectors = 512; 357 dev->max_fib_size = 2048; 358 host->sg_tablesize = 65; 359 dev->sg_tablesize = 81; 360 host->can_queue = 512 - AAC_NUM_MGT_FIB; 361 } else if (acbsize == 4096) { 362 host->max_sectors = 1024; 363 dev->max_fib_size = 4096; 364 host->sg_tablesize = 129; 365 dev->sg_tablesize = 166; 366 host->can_queue = 256 - AAC_NUM_MGT_FIB; 367 } else if (acbsize == 8192) { 368 host->max_sectors = 2048; 369 dev->max_fib_size = 8192; 370 host->sg_tablesize = 257; 371 dev->sg_tablesize = 337; 372 host->can_queue = 128 - AAC_NUM_MGT_FIB; 373 } else if (acbsize > 0) { 374 printk("Illegal acbsize=%d ignored\n", acbsize); 375 } 376 } 377 { 378 379 if (numacb > 0) { 380 if (numacb < host->can_queue) 381 host->can_queue = numacb; 382 else 383 printk("numacb=%d ignored\n", numacb); 384 } 385 } 386 387 /* 388 * Ok now init the communication subsystem 389 */ 390 391 dev->queues = kzalloc(sizeof(struct aac_queue_block), GFP_KERNEL); 392 if (dev->queues == NULL) { 393 printk(KERN_ERR "Error could not allocate comm region.\n"); 394 return NULL; 395 } 396 397 if (aac_comm_init(dev)<0){ 398 kfree(dev->queues); 399 return NULL; 400 } 401 /* 402 * Initialize the list of fibs 403 */ 404 if (aac_fib_setup(dev) < 0) { 405 kfree(dev->queues); 406 return NULL; 407 } 408 409 INIT_LIST_HEAD(&dev->fib_list); 410 411 return dev; 412 } 413 414 415