Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | * commsup.c |
| 26 | * |
| 27 | * Abstract: Contain all routines that are required for FSA host/adapter |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 28 | * communication. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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/completion.h> |
| 40 | #include <linux/blkdev.h> |
Al Viro | 164006d | 2005-11-30 23:47:05 -0500 | [diff] [blame] | 41 | #include <linux/delay.h> |
Christoph Hellwig | fe27381 | 2006-02-14 18:45:06 +0100 | [diff] [blame] | 42 | #include <linux/kthread.h> |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 43 | #include <scsi/scsi_host.h> |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 44 | #include <scsi/scsi_device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include <asm/semaphore.h> |
| 46 | |
| 47 | #include "aacraid.h" |
| 48 | |
| 49 | /** |
| 50 | * fib_map_alloc - allocate the fib objects |
| 51 | * @dev: Adapter to allocate for |
| 52 | * |
| 53 | * Allocate and map the shared PCI space for the FIB blocks used to |
| 54 | * talk to the Adaptec firmware. |
| 55 | */ |
| 56 | |
| 57 | static int fib_map_alloc(struct aac_dev *dev) |
| 58 | { |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 59 | dprintk((KERN_INFO |
| 60 | "allocate hardware fibs pci_alloc_consistent(%p, %d * (%d + %d), %p)\n", |
| 61 | dev->pdev, dev->max_fib_size, dev->scsi_host_ptr->can_queue, |
| 62 | AAC_NUM_MGT_FIB, &dev->hw_fib_pa)); |
| 63 | if((dev->hw_fib_va = pci_alloc_consistent(dev->pdev, dev->max_fib_size |
| 64 | * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB), |
| 65 | &dev->hw_fib_pa))==NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | return -ENOMEM; |
| 67 | return 0; |
| 68 | } |
| 69 | |
| 70 | /** |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 71 | * aac_fib_map_free - free the fib objects |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | * @dev: Adapter to free |
| 73 | * |
| 74 | * Free the PCI mappings and the memory allocated for FIB blocks |
| 75 | * on this adapter. |
| 76 | */ |
| 77 | |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 78 | void aac_fib_map_free(struct aac_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | { |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 80 | pci_free_consistent(dev->pdev, dev->max_fib_size * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB), dev->hw_fib_va, dev->hw_fib_pa); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | } |
| 82 | |
| 83 | /** |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 84 | * aac_fib_setup - setup the fibs |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | * @dev: Adapter to set up |
| 86 | * |
| 87 | * Allocate the PCI space for the fibs, map it and then intialise the |
| 88 | * fib area, the unmapped fib data and also the free list |
| 89 | */ |
| 90 | |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 91 | int aac_fib_setup(struct aac_dev * dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | { |
| 93 | struct fib *fibptr; |
| 94 | struct hw_fib *hw_fib_va; |
| 95 | dma_addr_t hw_fib_pa; |
| 96 | int i; |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 97 | |
| 98 | while (((i = fib_map_alloc(dev)) == -ENOMEM) |
| 99 | && (dev->scsi_host_ptr->can_queue > (64 - AAC_NUM_MGT_FIB))) { |
| 100 | dev->init->MaxIoCommands = cpu_to_le32((dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) >> 1); |
| 101 | dev->scsi_host_ptr->can_queue = le32_to_cpu(dev->init->MaxIoCommands) - AAC_NUM_MGT_FIB; |
| 102 | } |
| 103 | if (i<0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | return -ENOMEM; |
| 105 | |
| 106 | hw_fib_va = dev->hw_fib_va; |
| 107 | hw_fib_pa = dev->hw_fib_pa; |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 108 | memset(hw_fib_va, 0, dev->max_fib_size * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | /* |
| 110 | * Initialise the fibs |
| 111 | */ |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 112 | for (i = 0, fibptr = &dev->fibs[i]; i < (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); i++, fibptr++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | { |
| 114 | fibptr->dev = dev; |
| 115 | fibptr->hw_fib = hw_fib_va; |
| 116 | fibptr->data = (void *) fibptr->hw_fib->data; |
| 117 | fibptr->next = fibptr+1; /* Forward chain the fibs */ |
| 118 | init_MUTEX_LOCKED(&fibptr->event_wait); |
| 119 | spin_lock_init(&fibptr->event_lock); |
Mark Haverkamp | 56b5871 | 2005-04-27 06:05:51 -0700 | [diff] [blame] | 120 | hw_fib_va->header.XferState = cpu_to_le32(0xffffffff); |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 121 | hw_fib_va->header.SenderSize = cpu_to_le16(dev->max_fib_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | fibptr->hw_fib_pa = hw_fib_pa; |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 123 | hw_fib_va = (struct hw_fib *)((unsigned char *)hw_fib_va + dev->max_fib_size); |
| 124 | hw_fib_pa = hw_fib_pa + dev->max_fib_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | } |
| 126 | /* |
| 127 | * Add the fib chain to the free list |
| 128 | */ |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 129 | dev->fibs[dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB - 1].next = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | /* |
| 131 | * Enable this to debug out of queue space |
| 132 | */ |
| 133 | dev->free_fib = &dev->fibs[0]; |
| 134 | return 0; |
| 135 | } |
| 136 | |
| 137 | /** |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 138 | * aac_fib_alloc - allocate a fib |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | * @dev: Adapter to allocate the fib for |
| 140 | * |
| 141 | * Allocate a fib from the adapter fib pool. If the pool is empty we |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 142 | * return NULL. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | */ |
| 144 | |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 145 | struct fib *aac_fib_alloc(struct aac_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | { |
| 147 | struct fib * fibptr; |
| 148 | unsigned long flags; |
| 149 | spin_lock_irqsave(&dev->fib_lock, flags); |
| 150 | fibptr = dev->free_fib; |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 151 | if(!fibptr){ |
| 152 | spin_unlock_irqrestore(&dev->fib_lock, flags); |
| 153 | return fibptr; |
| 154 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | dev->free_fib = fibptr->next; |
| 156 | spin_unlock_irqrestore(&dev->fib_lock, flags); |
| 157 | /* |
| 158 | * Set the proper node type code and node byte size |
| 159 | */ |
| 160 | fibptr->type = FSAFS_NTC_FIB_CONTEXT; |
| 161 | fibptr->size = sizeof(struct fib); |
| 162 | /* |
| 163 | * Null out fields that depend on being zero at the start of |
| 164 | * each I/O |
| 165 | */ |
| 166 | fibptr->hw_fib->header.XferState = 0; |
| 167 | fibptr->callback = NULL; |
| 168 | fibptr->callback_data = NULL; |
| 169 | |
| 170 | return fibptr; |
| 171 | } |
| 172 | |
| 173 | /** |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 174 | * aac_fib_free - free a fib |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | * @fibptr: fib to free up |
| 176 | * |
| 177 | * Frees up a fib and places it on the appropriate queue |
| 178 | * (either free or timed out) |
| 179 | */ |
| 180 | |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 181 | void aac_fib_free(struct fib *fibptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | { |
| 183 | unsigned long flags; |
| 184 | |
| 185 | spin_lock_irqsave(&fibptr->dev->fib_lock, flags); |
| 186 | if (fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT) { |
| 187 | aac_config.fib_timeouts++; |
| 188 | fibptr->next = fibptr->dev->timeout_fib; |
| 189 | fibptr->dev->timeout_fib = fibptr; |
| 190 | } else { |
| 191 | if (fibptr->hw_fib->header.XferState != 0) { |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 192 | printk(KERN_WARNING "aac_fib_free, XferState != 0, fibptr = 0x%p, XferState = 0x%x\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | (void*)fibptr, |
| 194 | le32_to_cpu(fibptr->hw_fib->header.XferState)); |
| 195 | } |
| 196 | fibptr->next = fibptr->dev->free_fib; |
| 197 | fibptr->dev->free_fib = fibptr; |
| 198 | } |
| 199 | spin_unlock_irqrestore(&fibptr->dev->fib_lock, flags); |
| 200 | } |
| 201 | |
| 202 | /** |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 203 | * aac_fib_init - initialise a fib |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | * @fibptr: The fib to initialize |
| 205 | * |
| 206 | * Set up the generic fib fields ready for use |
| 207 | */ |
| 208 | |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 209 | void aac_fib_init(struct fib *fibptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | { |
| 211 | struct hw_fib *hw_fib = fibptr->hw_fib; |
| 212 | |
| 213 | hw_fib->header.StructType = FIB_MAGIC; |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 214 | hw_fib->header.Size = cpu_to_le16(fibptr->dev->max_fib_size); |
| 215 | hw_fib->header.XferState = cpu_to_le32(HostOwned | FibInitialized | FibEmpty | FastResponseCapable); |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 216 | hw_fib->header.SenderFibAddress = 0; /* Filled in later if needed */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | hw_fib->header.ReceiverFibAddress = cpu_to_le32(fibptr->hw_fib_pa); |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 218 | hw_fib->header.SenderSize = cpu_to_le16(fibptr->dev->max_fib_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | } |
| 220 | |
| 221 | /** |
| 222 | * fib_deallocate - deallocate a fib |
| 223 | * @fibptr: fib to deallocate |
| 224 | * |
| 225 | * Will deallocate and return to the free pool the FIB pointed to by the |
| 226 | * caller. |
| 227 | */ |
| 228 | |
Adrian Bunk | 4833869 | 2005-04-25 19:45:58 -0700 | [diff] [blame] | 229 | static void fib_dealloc(struct fib * fibptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | { |
| 231 | struct hw_fib *hw_fib = fibptr->hw_fib; |
Eric Sesterhenn | 125e187 | 2006-06-23 02:06:06 -0700 | [diff] [blame^] | 232 | BUG_ON(hw_fib->header.StructType != FIB_MAGIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | hw_fib->header.XferState = 0; |
| 234 | } |
| 235 | |
| 236 | /* |
| 237 | * Commuication primitives define and support the queuing method we use to |
| 238 | * support host to adapter commuication. All queue accesses happen through |
| 239 | * these routines and are the only routines which have a knowledge of the |
| 240 | * how these queues are implemented. |
| 241 | */ |
| 242 | |
| 243 | /** |
| 244 | * aac_get_entry - get a queue entry |
| 245 | * @dev: Adapter |
| 246 | * @qid: Queue Number |
| 247 | * @entry: Entry return |
| 248 | * @index: Index return |
| 249 | * @nonotify: notification control |
| 250 | * |
| 251 | * With a priority the routine returns a queue entry if the queue has free entries. If the queue |
| 252 | * is full(no free entries) than no entry is returned and the function returns 0 otherwise 1 is |
| 253 | * returned. |
| 254 | */ |
| 255 | |
| 256 | static int aac_get_entry (struct aac_dev * dev, u32 qid, struct aac_entry **entry, u32 * index, unsigned long *nonotify) |
| 257 | { |
| 258 | struct aac_queue * q; |
Mark Haverkamp | bed30de | 2005-08-03 15:38:51 -0700 | [diff] [blame] | 259 | unsigned long idx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | |
| 261 | /* |
| 262 | * All of the queues wrap when they reach the end, so we check |
| 263 | * to see if they have reached the end and if they have we just |
| 264 | * set the index back to zero. This is a wrap. You could or off |
| 265 | * the high bits in all updates but this is a bit faster I think. |
| 266 | */ |
| 267 | |
| 268 | q = &dev->queues->queue[qid]; |
Mark Haverkamp | bed30de | 2005-08-03 15:38:51 -0700 | [diff] [blame] | 269 | |
| 270 | idx = *index = le32_to_cpu(*(q->headers.producer)); |
| 271 | /* Interrupt Moderation, only interrupt for first two entries */ |
| 272 | if (idx != le32_to_cpu(*(q->headers.consumer))) { |
| 273 | if (--idx == 0) { |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 274 | if (qid == AdapNormCmdQueue) |
Mark Haverkamp | bed30de | 2005-08-03 15:38:51 -0700 | [diff] [blame] | 275 | idx = ADAP_NORM_CMD_ENTRIES; |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 276 | else |
Mark Haverkamp | bed30de | 2005-08-03 15:38:51 -0700 | [diff] [blame] | 277 | idx = ADAP_NORM_RESP_ENTRIES; |
| 278 | } |
| 279 | if (idx != le32_to_cpu(*(q->headers.consumer))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | *nonotify = 1; |
Mark Haverkamp | bed30de | 2005-08-03 15:38:51 -0700 | [diff] [blame] | 281 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 283 | if (qid == AdapNormCmdQueue) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | if (*index >= ADAP_NORM_CMD_ENTRIES) |
| 285 | *index = 0; /* Wrap to front of the Producer Queue. */ |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 286 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | if (*index >= ADAP_NORM_RESP_ENTRIES) |
| 288 | *index = 0; /* Wrap to front of the Producer Queue. */ |
| 289 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | |
| 291 | if ((*index + 1) == le32_to_cpu(*(q->headers.consumer))) { /* Queue is full */ |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 292 | printk(KERN_WARNING "Queue %d full, %u outstanding.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | qid, q->numpending); |
| 294 | return 0; |
| 295 | } else { |
| 296 | *entry = q->base + *index; |
| 297 | return 1; |
| 298 | } |
| 299 | } |
| 300 | |
| 301 | /** |
| 302 | * aac_queue_get - get the next free QE |
| 303 | * @dev: Adapter |
| 304 | * @index: Returned index |
| 305 | * @priority: Priority of fib |
| 306 | * @fib: Fib to associate with the queue entry |
| 307 | * @wait: Wait if queue full |
| 308 | * @fibptr: Driver fib object to go with fib |
| 309 | * @nonotify: Don't notify the adapter |
| 310 | * |
| 311 | * Gets the next free QE off the requested priorty adapter command |
| 312 | * queue and associates the Fib with the QE. The QE represented by |
| 313 | * index is ready to insert on the queue when this routine returns |
| 314 | * success. |
| 315 | */ |
| 316 | |
| 317 | static int aac_queue_get(struct aac_dev * dev, u32 * index, u32 qid, struct hw_fib * hw_fib, int wait, struct fib * fibptr, unsigned long *nonotify) |
| 318 | { |
| 319 | struct aac_entry * entry = NULL; |
| 320 | int map = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 322 | if (qid == AdapNormCmdQueue) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | /* if no entries wait for some if caller wants to */ |
| 324 | while (!aac_get_entry(dev, qid, &entry, index, nonotify)) |
| 325 | { |
| 326 | printk(KERN_ERR "GetEntries failed\n"); |
| 327 | } |
| 328 | /* |
| 329 | * Setup queue entry with a command, status and fib mapped |
| 330 | */ |
| 331 | entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size)); |
| 332 | map = 1; |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 333 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | while(!aac_get_entry(dev, qid, &entry, index, nonotify)) |
| 335 | { |
| 336 | /* if no entries wait for some if caller wants to */ |
| 337 | } |
| 338 | /* |
| 339 | * Setup queue entry with command, status and fib mapped |
| 340 | */ |
| 341 | entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size)); |
| 342 | entry->addr = hw_fib->header.SenderFibAddress; |
| 343 | /* Restore adapters pointer to the FIB */ |
| 344 | hw_fib->header.ReceiverFibAddress = hw_fib->header.SenderFibAddress; /* Let the adapter now where to find its data */ |
| 345 | map = 0; |
| 346 | } |
| 347 | /* |
| 348 | * If MapFib is true than we need to map the Fib and put pointers |
| 349 | * in the queue entry. |
| 350 | */ |
| 351 | if (map) |
| 352 | entry->addr = cpu_to_le32(fibptr->hw_fib_pa); |
| 353 | return 0; |
| 354 | } |
| 355 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | /* |
| 357 | * Define the highest level of host to adapter communication routines. |
| 358 | * These routines will support host to adapter FS commuication. These |
| 359 | * routines have no knowledge of the commuication method used. This level |
| 360 | * sends and receives FIBs. This level has no knowledge of how these FIBs |
| 361 | * get passed back and forth. |
| 362 | */ |
| 363 | |
| 364 | /** |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 365 | * aac_fib_send - send a fib to the adapter |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | * @command: Command to send |
| 367 | * @fibptr: The fib |
| 368 | * @size: Size of fib data area |
| 369 | * @priority: Priority of Fib |
| 370 | * @wait: Async/sync select |
| 371 | * @reply: True if a reply is wanted |
| 372 | * @callback: Called with reply |
| 373 | * @callback_data: Passed to callback |
| 374 | * |
| 375 | * Sends the requested FIB to the adapter and optionally will wait for a |
| 376 | * response FIB. If the caller does not wish to wait for a response than |
| 377 | * an event to wait on must be supplied. This event will be set when a |
| 378 | * response FIB is received from the adapter. |
| 379 | */ |
| 380 | |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 381 | int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size, |
| 382 | int priority, int wait, int reply, fib_callback callback, |
| 383 | void *callback_data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | struct aac_dev * dev = fibptr->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | struct hw_fib * hw_fib = fibptr->hw_fib; |
| 387 | struct aac_queue * q; |
| 388 | unsigned long flags = 0; |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 389 | unsigned long qflags; |
| 390 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | if (!(hw_fib->header.XferState & cpu_to_le32(HostOwned))) |
| 392 | return -EBUSY; |
| 393 | /* |
| 394 | * There are 5 cases with the wait and reponse requested flags. |
| 395 | * The only invalid cases are if the caller requests to wait and |
| 396 | * does not request a response and if the caller does not want a |
| 397 | * response and the Fib is not allocated from pool. If a response |
| 398 | * is not requesed the Fib will just be deallocaed by the DPC |
| 399 | * routine when the response comes back from the adapter. No |
| 400 | * further processing will be done besides deleting the Fib. We |
| 401 | * will have a debug mode where the adapter can notify the host |
| 402 | * it had a problem and the host can log that fact. |
| 403 | */ |
| 404 | if (wait && !reply) { |
| 405 | return -EINVAL; |
| 406 | } else if (!wait && reply) { |
| 407 | hw_fib->header.XferState |= cpu_to_le32(Async | ResponseExpected); |
| 408 | FIB_COUNTER_INCREMENT(aac_config.AsyncSent); |
| 409 | } else if (!wait && !reply) { |
| 410 | hw_fib->header.XferState |= cpu_to_le32(NoResponseExpected); |
| 411 | FIB_COUNTER_INCREMENT(aac_config.NoResponseSent); |
| 412 | } else if (wait && reply) { |
| 413 | hw_fib->header.XferState |= cpu_to_le32(ResponseExpected); |
| 414 | FIB_COUNTER_INCREMENT(aac_config.NormalSent); |
| 415 | } |
| 416 | /* |
| 417 | * Map the fib into 32bits by using the fib number |
| 418 | */ |
| 419 | |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 420 | hw_fib->header.SenderFibAddress = cpu_to_le32(((u32)(fibptr - dev->fibs)) << 2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | hw_fib->header.SenderData = (u32)(fibptr - dev->fibs); |
| 422 | /* |
| 423 | * Set FIB state to indicate where it came from and if we want a |
| 424 | * response from the adapter. Also load the command from the |
| 425 | * caller. |
| 426 | * |
| 427 | * Map the hw fib pointer as a 32bit value |
| 428 | */ |
| 429 | hw_fib->header.Command = cpu_to_le16(command); |
| 430 | hw_fib->header.XferState |= cpu_to_le32(SentFromHost); |
| 431 | fibptr->hw_fib->header.Flags = 0; /* 0 the flags field - internal only*/ |
| 432 | /* |
| 433 | * Set the size of the Fib we want to send to the adapter |
| 434 | */ |
| 435 | hw_fib->header.Size = cpu_to_le16(sizeof(struct aac_fibhdr) + size); |
| 436 | if (le16_to_cpu(hw_fib->header.Size) > le16_to_cpu(hw_fib->header.SenderSize)) { |
| 437 | return -EMSGSIZE; |
| 438 | } |
| 439 | /* |
| 440 | * Get a queue entry connect the FIB to it and send an notify |
| 441 | * the adapter a command is ready. |
| 442 | */ |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 443 | hw_fib->header.XferState |= cpu_to_le32(NormalPriority); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | /* |
| 446 | * Fill in the Callback and CallbackContext if we are not |
| 447 | * going to wait. |
| 448 | */ |
| 449 | if (!wait) { |
| 450 | fibptr->callback = callback; |
| 451 | fibptr->callback_data = callback_data; |
| 452 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | |
| 454 | fibptr->done = 0; |
| 455 | fibptr->flags = 0; |
| 456 | |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 457 | FIB_COUNTER_INCREMENT(aac_config.FibsSent); |
| 458 | |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 459 | dprintk((KERN_DEBUG "Fib contents:.\n")); |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 460 | dprintk((KERN_DEBUG " Command = %d.\n", le32_to_cpu(hw_fib->header.Command))); |
| 461 | dprintk((KERN_DEBUG " SubCommand = %d.\n", le32_to_cpu(((struct aac_query_mount *)fib_data(fibptr))->command))); |
| 462 | dprintk((KERN_DEBUG " XferState = %x.\n", le32_to_cpu(hw_fib->header.XferState))); |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 463 | dprintk((KERN_DEBUG " hw_fib va being sent=%p\n",fibptr->hw_fib)); |
| 464 | dprintk((KERN_DEBUG " hw_fib pa being sent=%lx\n",(ulong)fibptr->hw_fib_pa)); |
| 465 | dprintk((KERN_DEBUG " fib being sent=%p\n",fibptr)); |
| 466 | |
| 467 | q = &dev->queues->queue[AdapNormCmdQueue]; |
| 468 | |
| 469 | if(wait) |
| 470 | spin_lock_irqsave(&fibptr->event_lock, flags); |
| 471 | spin_lock_irqsave(q->lock, qflags); |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 472 | if (dev->new_comm_interface) { |
| 473 | unsigned long count = 10000000L; /* 50 seconds */ |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 474 | q->numpending++; |
| 475 | spin_unlock_irqrestore(q->lock, qflags); |
| 476 | while (aac_adapter_send(fibptr) != 0) { |
| 477 | if (--count == 0) { |
| 478 | if (wait) |
| 479 | spin_unlock_irqrestore(&fibptr->event_lock, flags); |
| 480 | spin_lock_irqsave(q->lock, qflags); |
| 481 | q->numpending--; |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 482 | spin_unlock_irqrestore(q->lock, qflags); |
| 483 | return -ETIMEDOUT; |
| 484 | } |
| 485 | udelay(5); |
| 486 | } |
| 487 | } else { |
| 488 | u32 index; |
| 489 | unsigned long nointr = 0; |
| 490 | aac_queue_get( dev, &index, AdapNormCmdQueue, hw_fib, 1, fibptr, &nointr); |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 491 | |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 492 | q->numpending++; |
| 493 | *(q->headers.producer) = cpu_to_le32(index + 1); |
| 494 | spin_unlock_irqrestore(q->lock, qflags); |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 495 | dprintk((KERN_DEBUG "aac_fib_send: inserting a queue entry at index %d.\n",index)); |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 496 | if (!(nointr & aac_config.irq_mod)) |
| 497 | aac_adapter_notify(dev, AdapNormCmdQueue); |
| 498 | } |
| 499 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | /* |
| 501 | * If the caller wanted us to wait for response wait now. |
| 502 | */ |
| 503 | |
| 504 | if (wait) { |
| 505 | spin_unlock_irqrestore(&fibptr->event_lock, flags); |
Mark Haverkamp | 9203344 | 2005-09-20 12:56:50 -0700 | [diff] [blame] | 506 | /* Only set for first known interruptable command */ |
| 507 | if (wait < 0) { |
| 508 | /* |
| 509 | * *VERY* Dangerous to time out a command, the |
| 510 | * assumption is made that we have no hope of |
| 511 | * functioning because an interrupt routing or other |
| 512 | * hardware failure has occurred. |
| 513 | */ |
| 514 | unsigned long count = 36000000L; /* 3 minutes */ |
Mark Haverkamp | 9203344 | 2005-09-20 12:56:50 -0700 | [diff] [blame] | 515 | while (down_trylock(&fibptr->event_wait)) { |
| 516 | if (--count == 0) { |
| 517 | spin_lock_irqsave(q->lock, qflags); |
| 518 | q->numpending--; |
Mark Haverkamp | 9203344 | 2005-09-20 12:56:50 -0700 | [diff] [blame] | 519 | spin_unlock_irqrestore(q->lock, qflags); |
| 520 | if (wait == -1) { |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 521 | printk(KERN_ERR "aacraid: aac_fib_send: first asynchronous command timed out.\n" |
Mark Haverkamp | 9203344 | 2005-09-20 12:56:50 -0700 | [diff] [blame] | 522 | "Usually a result of a PCI interrupt routing problem;\n" |
| 523 | "update mother board BIOS or consider utilizing one of\n" |
| 524 | "the SAFE mode kernel options (acpi, apic etc)\n"); |
| 525 | } |
| 526 | return -ETIMEDOUT; |
| 527 | } |
| 528 | udelay(5); |
| 529 | } |
| 530 | } else |
| 531 | down(&fibptr->event_wait); |
Eric Sesterhenn | 125e187 | 2006-06-23 02:06:06 -0700 | [diff] [blame^] | 532 | BUG_ON(fibptr->done == 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | |
| 534 | if((fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT)){ |
| 535 | return -ETIMEDOUT; |
| 536 | } else { |
| 537 | return 0; |
| 538 | } |
| 539 | } |
| 540 | /* |
| 541 | * If the user does not want a response than return success otherwise |
| 542 | * return pending |
| 543 | */ |
| 544 | if (reply) |
| 545 | return -EINPROGRESS; |
| 546 | else |
| 547 | return 0; |
| 548 | } |
| 549 | |
| 550 | /** |
| 551 | * aac_consumer_get - get the top of the queue |
| 552 | * @dev: Adapter |
| 553 | * @q: Queue |
| 554 | * @entry: Return entry |
| 555 | * |
| 556 | * Will return a pointer to the entry on the top of the queue requested that |
| 557 | * we are a consumer of, and return the address of the queue entry. It does |
| 558 | * not change the state of the queue. |
| 559 | */ |
| 560 | |
| 561 | int aac_consumer_get(struct aac_dev * dev, struct aac_queue * q, struct aac_entry **entry) |
| 562 | { |
| 563 | u32 index; |
| 564 | int status; |
| 565 | if (le32_to_cpu(*q->headers.producer) == le32_to_cpu(*q->headers.consumer)) { |
| 566 | status = 0; |
| 567 | } else { |
| 568 | /* |
| 569 | * The consumer index must be wrapped if we have reached |
| 570 | * the end of the queue, else we just use the entry |
| 571 | * pointed to by the header index |
| 572 | */ |
| 573 | if (le32_to_cpu(*q->headers.consumer) >= q->entries) |
| 574 | index = 0; |
| 575 | else |
| 576 | index = le32_to_cpu(*q->headers.consumer); |
| 577 | *entry = q->base + index; |
| 578 | status = 1; |
| 579 | } |
| 580 | return(status); |
| 581 | } |
| 582 | |
| 583 | /** |
| 584 | * aac_consumer_free - free consumer entry |
| 585 | * @dev: Adapter |
| 586 | * @q: Queue |
| 587 | * @qid: Queue ident |
| 588 | * |
| 589 | * Frees up the current top of the queue we are a consumer of. If the |
| 590 | * queue was full notify the producer that the queue is no longer full. |
| 591 | */ |
| 592 | |
| 593 | void aac_consumer_free(struct aac_dev * dev, struct aac_queue *q, u32 qid) |
| 594 | { |
| 595 | int wasfull = 0; |
| 596 | u32 notify; |
| 597 | |
| 598 | if ((le32_to_cpu(*q->headers.producer)+1) == le32_to_cpu(*q->headers.consumer)) |
| 599 | wasfull = 1; |
| 600 | |
| 601 | if (le32_to_cpu(*q->headers.consumer) >= q->entries) |
| 602 | *q->headers.consumer = cpu_to_le32(1); |
| 603 | else |
| 604 | *q->headers.consumer = cpu_to_le32(le32_to_cpu(*q->headers.consumer)+1); |
| 605 | |
| 606 | if (wasfull) { |
| 607 | switch (qid) { |
| 608 | |
| 609 | case HostNormCmdQueue: |
| 610 | notify = HostNormCmdNotFull; |
| 611 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | case HostNormRespQueue: |
| 613 | notify = HostNormRespNotFull; |
| 614 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | default: |
| 616 | BUG(); |
| 617 | return; |
| 618 | } |
| 619 | aac_adapter_notify(dev, notify); |
| 620 | } |
| 621 | } |
| 622 | |
| 623 | /** |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 624 | * aac_fib_adapter_complete - complete adapter issued fib |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | * @fibptr: fib to complete |
| 626 | * @size: size of fib |
| 627 | * |
| 628 | * Will do all necessary work to complete a FIB that was sent from |
| 629 | * the adapter. |
| 630 | */ |
| 631 | |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 632 | int aac_fib_adapter_complete(struct fib *fibptr, unsigned short size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | { |
| 634 | struct hw_fib * hw_fib = fibptr->hw_fib; |
| 635 | struct aac_dev * dev = fibptr->dev; |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 636 | struct aac_queue * q; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | unsigned long nointr = 0; |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 638 | unsigned long qflags; |
| 639 | |
| 640 | if (hw_fib->header.XferState == 0) { |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 641 | if (dev->new_comm_interface) |
| 642 | kfree (hw_fib); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | return 0; |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 644 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | /* |
| 646 | * If we plan to do anything check the structure type first. |
| 647 | */ |
| 648 | if ( hw_fib->header.StructType != FIB_MAGIC ) { |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 649 | if (dev->new_comm_interface) |
| 650 | kfree (hw_fib); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | return -EINVAL; |
| 652 | } |
| 653 | /* |
| 654 | * This block handles the case where the adapter had sent us a |
| 655 | * command and we have finished processing the command. We |
| 656 | * call completeFib when we are done processing the command |
| 657 | * and want to send a response back to the adapter. This will |
| 658 | * send the completed cdb to the adapter. |
| 659 | */ |
| 660 | if (hw_fib->header.XferState & cpu_to_le32(SentFromAdapter)) { |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 661 | if (dev->new_comm_interface) { |
| 662 | kfree (hw_fib); |
| 663 | } else { |
| 664 | u32 index; |
| 665 | hw_fib->header.XferState |= cpu_to_le32(HostProcessed); |
| 666 | if (size) { |
| 667 | size += sizeof(struct aac_fibhdr); |
| 668 | if (size > le16_to_cpu(hw_fib->header.SenderSize)) |
| 669 | return -EMSGSIZE; |
| 670 | hw_fib->header.Size = cpu_to_le16(size); |
| 671 | } |
| 672 | q = &dev->queues->queue[AdapNormRespQueue]; |
| 673 | spin_lock_irqsave(q->lock, qflags); |
| 674 | aac_queue_get(dev, &index, AdapNormRespQueue, hw_fib, 1, NULL, &nointr); |
| 675 | *(q->headers.producer) = cpu_to_le32(index + 1); |
| 676 | spin_unlock_irqrestore(q->lock, qflags); |
| 677 | if (!(nointr & (int)aac_config.irq_mod)) |
| 678 | aac_adapter_notify(dev, AdapNormRespQueue); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | } |
| 680 | } |
| 681 | else |
| 682 | { |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 683 | printk(KERN_WARNING "aac_fib_adapter_complete: Unknown xferstate detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | BUG(); |
| 685 | } |
| 686 | return 0; |
| 687 | } |
| 688 | |
| 689 | /** |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 690 | * aac_fib_complete - fib completion handler |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | * @fib: FIB to complete |
| 692 | * |
| 693 | * Will do all necessary work to complete a FIB. |
| 694 | */ |
| 695 | |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 696 | int aac_fib_complete(struct fib *fibptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | { |
| 698 | struct hw_fib * hw_fib = fibptr->hw_fib; |
| 699 | |
| 700 | /* |
| 701 | * Check for a fib which has already been completed |
| 702 | */ |
| 703 | |
| 704 | if (hw_fib->header.XferState == 0) |
| 705 | return 0; |
| 706 | /* |
| 707 | * If we plan to do anything check the structure type first. |
| 708 | */ |
| 709 | |
| 710 | if (hw_fib->header.StructType != FIB_MAGIC) |
| 711 | return -EINVAL; |
| 712 | /* |
| 713 | * This block completes a cdb which orginated on the host and we |
| 714 | * just need to deallocate the cdb or reinit it. At this point the |
| 715 | * command is complete that we had sent to the adapter and this |
| 716 | * cdb could be reused. |
| 717 | */ |
| 718 | if((hw_fib->header.XferState & cpu_to_le32(SentFromHost)) && |
| 719 | (hw_fib->header.XferState & cpu_to_le32(AdapterProcessed))) |
| 720 | { |
| 721 | fib_dealloc(fibptr); |
| 722 | } |
| 723 | else if(hw_fib->header.XferState & cpu_to_le32(SentFromHost)) |
| 724 | { |
| 725 | /* |
| 726 | * This handles the case when the host has aborted the I/O |
| 727 | * to the adapter because the adapter is not responding |
| 728 | */ |
| 729 | fib_dealloc(fibptr); |
| 730 | } else if(hw_fib->header.XferState & cpu_to_le32(HostOwned)) { |
| 731 | fib_dealloc(fibptr); |
| 732 | } else { |
| 733 | BUG(); |
| 734 | } |
| 735 | return 0; |
| 736 | } |
| 737 | |
| 738 | /** |
| 739 | * aac_printf - handle printf from firmware |
| 740 | * @dev: Adapter |
| 741 | * @val: Message info |
| 742 | * |
| 743 | * Print a message passed to us by the controller firmware on the |
| 744 | * Adaptec board |
| 745 | */ |
| 746 | |
| 747 | void aac_printf(struct aac_dev *dev, u32 val) |
| 748 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | char *cp = dev->printfbuf; |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 750 | if (dev->printf_enabled) |
| 751 | { |
| 752 | int length = val & 0xffff; |
| 753 | int level = (val >> 16) & 0xffff; |
| 754 | |
| 755 | /* |
| 756 | * The size of the printfbuf is set in port.c |
| 757 | * There is no variable or define for it |
| 758 | */ |
| 759 | if (length > 255) |
| 760 | length = 255; |
| 761 | if (cp[length] != 0) |
| 762 | cp[length] = 0; |
| 763 | if (level == LOG_AAC_HIGH_ERROR) |
Mark Haverkamp | 1241f35 | 2006-03-27 09:44:23 -0800 | [diff] [blame] | 764 | printk(KERN_WARNING "%s:%s", dev->name, cp); |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 765 | else |
Mark Haverkamp | 1241f35 | 2006-03-27 09:44:23 -0800 | [diff] [blame] | 766 | printk(KERN_INFO "%s:%s", dev->name, cp); |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 767 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | memset(cp, 0, 256); |
| 769 | } |
| 770 | |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 771 | |
| 772 | /** |
| 773 | * aac_handle_aif - Handle a message from the firmware |
| 774 | * @dev: Which adapter this fib is from |
| 775 | * @fibptr: Pointer to fibptr from adapter |
| 776 | * |
| 777 | * This routine handles a driver notify fib from the adapter and |
| 778 | * dispatches it to the appropriate routine for handling. |
| 779 | */ |
| 780 | |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 781 | #define AIF_SNIFF_TIMEOUT (30*HZ) |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 782 | static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr) |
| 783 | { |
| 784 | struct hw_fib * hw_fib = fibptr->hw_fib; |
| 785 | struct aac_aifcmd * aifcmd = (struct aac_aifcmd *)hw_fib->data; |
| 786 | int busy; |
| 787 | u32 container; |
| 788 | struct scsi_device *device; |
| 789 | enum { |
| 790 | NOTHING, |
| 791 | DELETE, |
| 792 | ADD, |
| 793 | CHANGE |
| 794 | } device_config_needed; |
| 795 | |
| 796 | /* Sniff for container changes */ |
| 797 | |
| 798 | if (!dev) |
| 799 | return; |
| 800 | container = (u32)-1; |
| 801 | |
| 802 | /* |
| 803 | * We have set this up to try and minimize the number of |
| 804 | * re-configures that take place. As a result of this when |
| 805 | * certain AIF's come in we will set a flag waiting for another |
| 806 | * type of AIF before setting the re-config flag. |
| 807 | */ |
| 808 | switch (le32_to_cpu(aifcmd->command)) { |
| 809 | case AifCmdDriverNotify: |
| 810 | switch (le32_to_cpu(((u32 *)aifcmd->data)[0])) { |
| 811 | /* |
| 812 | * Morph or Expand complete |
| 813 | */ |
| 814 | case AifDenMorphComplete: |
| 815 | case AifDenVolumeExtendComplete: |
| 816 | container = le32_to_cpu(((u32 *)aifcmd->data)[1]); |
| 817 | if (container >= dev->maximum_num_containers) |
| 818 | break; |
| 819 | |
| 820 | /* |
Christoph Hellwig | f64a181 | 2005-10-31 18:32:08 +0100 | [diff] [blame] | 821 | * Find the scsi_device associated with the SCSI |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 822 | * address. Make sure we have the right array, and if |
| 823 | * so set the flag to initiate a new re-config once we |
| 824 | * see an AifEnConfigChange AIF come through. |
| 825 | */ |
| 826 | |
| 827 | if ((dev != NULL) && (dev->scsi_host_ptr != NULL)) { |
| 828 | device = scsi_device_lookup(dev->scsi_host_ptr, |
| 829 | CONTAINER_TO_CHANNEL(container), |
| 830 | CONTAINER_TO_ID(container), |
| 831 | CONTAINER_TO_LUN(container)); |
| 832 | if (device) { |
| 833 | dev->fsa_dev[container].config_needed = CHANGE; |
| 834 | dev->fsa_dev[container].config_waiting_on = AifEnConfigChange; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 835 | dev->fsa_dev[container].config_waiting_stamp = jiffies; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 836 | scsi_device_put(device); |
| 837 | } |
| 838 | } |
| 839 | } |
| 840 | |
| 841 | /* |
| 842 | * If we are waiting on something and this happens to be |
| 843 | * that thing then set the re-configure flag. |
| 844 | */ |
| 845 | if (container != (u32)-1) { |
| 846 | if (container >= dev->maximum_num_containers) |
| 847 | break; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 848 | if ((dev->fsa_dev[container].config_waiting_on == |
| 849 | le32_to_cpu(*(u32 *)aifcmd->data)) && |
| 850 | time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 851 | dev->fsa_dev[container].config_waiting_on = 0; |
| 852 | } else for (container = 0; |
| 853 | container < dev->maximum_num_containers; ++container) { |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 854 | if ((dev->fsa_dev[container].config_waiting_on == |
| 855 | le32_to_cpu(*(u32 *)aifcmd->data)) && |
| 856 | time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 857 | dev->fsa_dev[container].config_waiting_on = 0; |
| 858 | } |
| 859 | break; |
| 860 | |
| 861 | case AifCmdEventNotify: |
| 862 | switch (le32_to_cpu(((u32 *)aifcmd->data)[0])) { |
| 863 | /* |
| 864 | * Add an Array. |
| 865 | */ |
| 866 | case AifEnAddContainer: |
| 867 | container = le32_to_cpu(((u32 *)aifcmd->data)[1]); |
| 868 | if (container >= dev->maximum_num_containers) |
| 869 | break; |
| 870 | dev->fsa_dev[container].config_needed = ADD; |
| 871 | dev->fsa_dev[container].config_waiting_on = |
| 872 | AifEnConfigChange; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 873 | dev->fsa_dev[container].config_waiting_stamp = jiffies; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 874 | break; |
| 875 | |
| 876 | /* |
| 877 | * Delete an Array. |
| 878 | */ |
| 879 | case AifEnDeleteContainer: |
| 880 | container = le32_to_cpu(((u32 *)aifcmd->data)[1]); |
| 881 | if (container >= dev->maximum_num_containers) |
| 882 | break; |
| 883 | dev->fsa_dev[container].config_needed = DELETE; |
| 884 | dev->fsa_dev[container].config_waiting_on = |
| 885 | AifEnConfigChange; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 886 | dev->fsa_dev[container].config_waiting_stamp = jiffies; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 887 | break; |
| 888 | |
| 889 | /* |
| 890 | * Container change detected. If we currently are not |
| 891 | * waiting on something else, setup to wait on a Config Change. |
| 892 | */ |
| 893 | case AifEnContainerChange: |
| 894 | container = le32_to_cpu(((u32 *)aifcmd->data)[1]); |
| 895 | if (container >= dev->maximum_num_containers) |
| 896 | break; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 897 | if (dev->fsa_dev[container].config_waiting_on && |
| 898 | time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 899 | break; |
| 900 | dev->fsa_dev[container].config_needed = CHANGE; |
| 901 | dev->fsa_dev[container].config_waiting_on = |
| 902 | AifEnConfigChange; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 903 | dev->fsa_dev[container].config_waiting_stamp = jiffies; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 904 | break; |
| 905 | |
| 906 | case AifEnConfigChange: |
| 907 | break; |
| 908 | |
| 909 | } |
| 910 | |
| 911 | /* |
| 912 | * If we are waiting on something and this happens to be |
| 913 | * that thing then set the re-configure flag. |
| 914 | */ |
| 915 | if (container != (u32)-1) { |
| 916 | if (container >= dev->maximum_num_containers) |
| 917 | break; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 918 | if ((dev->fsa_dev[container].config_waiting_on == |
| 919 | le32_to_cpu(*(u32 *)aifcmd->data)) && |
| 920 | time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 921 | dev->fsa_dev[container].config_waiting_on = 0; |
| 922 | } else for (container = 0; |
| 923 | container < dev->maximum_num_containers; ++container) { |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 924 | if ((dev->fsa_dev[container].config_waiting_on == |
| 925 | le32_to_cpu(*(u32 *)aifcmd->data)) && |
| 926 | time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 927 | dev->fsa_dev[container].config_waiting_on = 0; |
| 928 | } |
| 929 | break; |
| 930 | |
| 931 | case AifCmdJobProgress: |
| 932 | /* |
| 933 | * These are job progress AIF's. When a Clear is being |
| 934 | * done on a container it is initially created then hidden from |
| 935 | * the OS. When the clear completes we don't get a config |
| 936 | * change so we monitor the job status complete on a clear then |
| 937 | * wait for a container change. |
| 938 | */ |
| 939 | |
| 940 | if ((((u32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero)) |
| 941 | && ((((u32 *)aifcmd->data)[6] == ((u32 *)aifcmd->data)[5]) |
| 942 | || (((u32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsSuccess)))) { |
| 943 | for (container = 0; |
| 944 | container < dev->maximum_num_containers; |
| 945 | ++container) { |
| 946 | /* |
| 947 | * Stomp on all config sequencing for all |
| 948 | * containers? |
| 949 | */ |
| 950 | dev->fsa_dev[container].config_waiting_on = |
| 951 | AifEnContainerChange; |
| 952 | dev->fsa_dev[container].config_needed = ADD; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 953 | dev->fsa_dev[container].config_waiting_stamp = |
| 954 | jiffies; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 955 | } |
| 956 | } |
| 957 | if ((((u32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero)) |
| 958 | && (((u32 *)aifcmd->data)[6] == 0) |
| 959 | && (((u32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsRunning))) { |
| 960 | for (container = 0; |
| 961 | container < dev->maximum_num_containers; |
| 962 | ++container) { |
| 963 | /* |
| 964 | * Stomp on all config sequencing for all |
| 965 | * containers? |
| 966 | */ |
| 967 | dev->fsa_dev[container].config_waiting_on = |
| 968 | AifEnContainerChange; |
| 969 | dev->fsa_dev[container].config_needed = DELETE; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 970 | dev->fsa_dev[container].config_waiting_stamp = |
| 971 | jiffies; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 972 | } |
| 973 | } |
| 974 | break; |
| 975 | } |
| 976 | |
| 977 | device_config_needed = NOTHING; |
| 978 | for (container = 0; container < dev->maximum_num_containers; |
| 979 | ++container) { |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 980 | if ((dev->fsa_dev[container].config_waiting_on == 0) && |
| 981 | (dev->fsa_dev[container].config_needed != NOTHING) && |
| 982 | time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) { |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 983 | device_config_needed = |
| 984 | dev->fsa_dev[container].config_needed; |
| 985 | dev->fsa_dev[container].config_needed = NOTHING; |
| 986 | break; |
| 987 | } |
| 988 | } |
| 989 | if (device_config_needed == NOTHING) |
| 990 | return; |
| 991 | |
| 992 | /* |
| 993 | * If we decided that a re-configuration needs to be done, |
| 994 | * schedule it here on the way out the door, please close the door |
| 995 | * behind you. |
| 996 | */ |
| 997 | |
| 998 | busy = 0; |
| 999 | |
| 1000 | |
| 1001 | /* |
Christoph Hellwig | f64a181 | 2005-10-31 18:32:08 +0100 | [diff] [blame] | 1002 | * Find the scsi_device associated with the SCSI address, |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1003 | * and mark it as changed, invalidating the cache. This deals |
| 1004 | * with changes to existing device IDs. |
| 1005 | */ |
| 1006 | |
| 1007 | if (!dev || !dev->scsi_host_ptr) |
| 1008 | return; |
| 1009 | /* |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 1010 | * force reload of disk info via aac_probe_container |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1011 | */ |
| 1012 | if ((device_config_needed == CHANGE) |
| 1013 | && (dev->fsa_dev[container].valid == 1)) |
| 1014 | dev->fsa_dev[container].valid = 2; |
| 1015 | if ((device_config_needed == CHANGE) || |
| 1016 | (device_config_needed == ADD)) |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 1017 | aac_probe_container(dev, container); |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1018 | device = scsi_device_lookup(dev->scsi_host_ptr, |
| 1019 | CONTAINER_TO_CHANNEL(container), |
| 1020 | CONTAINER_TO_ID(container), |
| 1021 | CONTAINER_TO_LUN(container)); |
| 1022 | if (device) { |
| 1023 | switch (device_config_needed) { |
| 1024 | case DELETE: |
| 1025 | scsi_remove_device(device); |
| 1026 | break; |
| 1027 | case CHANGE: |
| 1028 | if (!dev->fsa_dev[container].valid) { |
| 1029 | scsi_remove_device(device); |
| 1030 | break; |
| 1031 | } |
| 1032 | scsi_rescan_device(&device->sdev_gendev); |
| 1033 | |
| 1034 | default: |
| 1035 | break; |
| 1036 | } |
| 1037 | scsi_device_put(device); |
| 1038 | } |
| 1039 | if (device_config_needed == ADD) { |
| 1040 | scsi_add_device(dev->scsi_host_ptr, |
| 1041 | CONTAINER_TO_CHANNEL(container), |
| 1042 | CONTAINER_TO_ID(container), |
| 1043 | CONTAINER_TO_LUN(container)); |
| 1044 | } |
| 1045 | |
| 1046 | } |
| 1047 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1048 | /** |
| 1049 | * aac_command_thread - command processing thread |
| 1050 | * @dev: Adapter to monitor |
| 1051 | * |
| 1052 | * Waits on the commandready event in it's queue. When the event gets set |
| 1053 | * it will pull FIBs off it's queue. It will continue to pull FIBs off |
| 1054 | * until the queue is empty. When the queue is empty it will wait for |
| 1055 | * more FIBs. |
| 1056 | */ |
| 1057 | |
Christoph Hellwig | fe27381 | 2006-02-14 18:45:06 +0100 | [diff] [blame] | 1058 | int aac_command_thread(void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | { |
Christoph Hellwig | fe27381 | 2006-02-14 18:45:06 +0100 | [diff] [blame] | 1060 | struct aac_dev *dev = data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1061 | struct hw_fib *hw_fib, *hw_newfib; |
| 1062 | struct fib *fib, *newfib; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | struct aac_fib_context *fibctx; |
| 1064 | unsigned long flags; |
| 1065 | DECLARE_WAITQUEUE(wait, current); |
| 1066 | |
| 1067 | /* |
| 1068 | * We can only have one thread per adapter for AIF's. |
| 1069 | */ |
| 1070 | if (dev->aif_thread) |
| 1071 | return -EINVAL; |
Christoph Hellwig | fe27381 | 2006-02-14 18:45:06 +0100 | [diff] [blame] | 1072 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1073 | /* |
| 1074 | * Let the DPC know it has a place to send the AIF's to. |
| 1075 | */ |
| 1076 | dev->aif_thread = 1; |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1077 | add_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1078 | set_current_state(TASK_INTERRUPTIBLE); |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1079 | dprintk ((KERN_INFO "aac_command_thread start\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1080 | while(1) |
| 1081 | { |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1082 | spin_lock_irqsave(dev->queues->queue[HostNormCmdQueue].lock, flags); |
| 1083 | while(!list_empty(&(dev->queues->queue[HostNormCmdQueue].cmdq))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1084 | struct list_head *entry; |
| 1085 | struct aac_aifcmd * aifcmd; |
| 1086 | |
| 1087 | set_current_state(TASK_RUNNING); |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1088 | |
| 1089 | entry = dev->queues->queue[HostNormCmdQueue].cmdq.next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | list_del(entry); |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1091 | |
| 1092 | spin_unlock_irqrestore(dev->queues->queue[HostNormCmdQueue].lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | fib = list_entry(entry, struct fib, fiblink); |
| 1094 | /* |
| 1095 | * We will process the FIB here or pass it to a |
| 1096 | * worker thread that is TBD. We Really can't |
| 1097 | * do anything at this point since we don't have |
| 1098 | * anything defined for this thread to do. |
| 1099 | */ |
| 1100 | hw_fib = fib->hw_fib; |
| 1101 | memset(fib, 0, sizeof(struct fib)); |
| 1102 | fib->type = FSAFS_NTC_FIB_CONTEXT; |
| 1103 | fib->size = sizeof( struct fib ); |
| 1104 | fib->hw_fib = hw_fib; |
| 1105 | fib->data = hw_fib->data; |
| 1106 | fib->dev = dev; |
| 1107 | /* |
| 1108 | * We only handle AifRequest fibs from the adapter. |
| 1109 | */ |
| 1110 | aifcmd = (struct aac_aifcmd *) hw_fib->data; |
| 1111 | if (aifcmd->command == cpu_to_le32(AifCmdDriverNotify)) { |
| 1112 | /* Handle Driver Notify Events */ |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1113 | aac_handle_aif(dev, fib); |
Mark Haverkamp | 56b5871 | 2005-04-27 06:05:51 -0700 | [diff] [blame] | 1114 | *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK); |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 1115 | aac_fib_adapter_complete(fib, (u16)sizeof(u32)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1116 | } else { |
| 1117 | struct list_head *entry; |
| 1118 | /* The u32 here is important and intended. We are using |
| 1119 | 32bit wrapping time to fit the adapter field */ |
| 1120 | |
| 1121 | u32 time_now, time_last; |
| 1122 | unsigned long flagv; |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1123 | unsigned num; |
| 1124 | struct hw_fib ** hw_fib_pool, ** hw_fib_p; |
| 1125 | struct fib ** fib_pool, ** fib_p; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1126 | |
| 1127 | /* Sniff events */ |
| 1128 | if ((aifcmd->command == |
| 1129 | cpu_to_le32(AifCmdEventNotify)) || |
| 1130 | (aifcmd->command == |
| 1131 | cpu_to_le32(AifCmdJobProgress))) { |
| 1132 | aac_handle_aif(dev, fib); |
| 1133 | } |
| 1134 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1135 | time_now = jiffies/HZ; |
| 1136 | |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1137 | /* |
| 1138 | * Warning: no sleep allowed while |
| 1139 | * holding spinlock. We take the estimate |
| 1140 | * and pre-allocate a set of fibs outside the |
| 1141 | * lock. |
| 1142 | */ |
| 1143 | num = le32_to_cpu(dev->init->AdapterFibsSize) |
| 1144 | / sizeof(struct hw_fib); /* some extra */ |
| 1145 | spin_lock_irqsave(&dev->fib_lock, flagv); |
| 1146 | entry = dev->fib_list.next; |
| 1147 | while (entry != &dev->fib_list) { |
| 1148 | entry = entry->next; |
| 1149 | ++num; |
| 1150 | } |
| 1151 | spin_unlock_irqrestore(&dev->fib_lock, flagv); |
| 1152 | hw_fib_pool = NULL; |
| 1153 | fib_pool = NULL; |
| 1154 | if (num |
| 1155 | && ((hw_fib_pool = kmalloc(sizeof(struct hw_fib *) * num, GFP_KERNEL))) |
| 1156 | && ((fib_pool = kmalloc(sizeof(struct fib *) * num, GFP_KERNEL)))) { |
| 1157 | hw_fib_p = hw_fib_pool; |
| 1158 | fib_p = fib_pool; |
| 1159 | while (hw_fib_p < &hw_fib_pool[num]) { |
| 1160 | if (!(*(hw_fib_p++) = kmalloc(sizeof(struct hw_fib), GFP_KERNEL))) { |
| 1161 | --hw_fib_p; |
| 1162 | break; |
| 1163 | } |
| 1164 | if (!(*(fib_p++) = kmalloc(sizeof(struct fib), GFP_KERNEL))) { |
| 1165 | kfree(*(--hw_fib_p)); |
| 1166 | break; |
| 1167 | } |
| 1168 | } |
| 1169 | if ((num = hw_fib_p - hw_fib_pool) == 0) { |
| 1170 | kfree(fib_pool); |
| 1171 | fib_pool = NULL; |
| 1172 | kfree(hw_fib_pool); |
| 1173 | hw_fib_pool = NULL; |
| 1174 | } |
Jesper Juhl | c9475cb | 2005-11-07 01:01:26 -0800 | [diff] [blame] | 1175 | } else { |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1176 | kfree(hw_fib_pool); |
| 1177 | hw_fib_pool = NULL; |
| 1178 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1179 | spin_lock_irqsave(&dev->fib_lock, flagv); |
| 1180 | entry = dev->fib_list.next; |
| 1181 | /* |
| 1182 | * For each Context that is on the |
| 1183 | * fibctxList, make a copy of the |
| 1184 | * fib, and then set the event to wake up the |
| 1185 | * thread that is waiting for it. |
| 1186 | */ |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1187 | hw_fib_p = hw_fib_pool; |
| 1188 | fib_p = fib_pool; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1189 | while (entry != &dev->fib_list) { |
| 1190 | /* |
| 1191 | * Extract the fibctx |
| 1192 | */ |
| 1193 | fibctx = list_entry(entry, struct aac_fib_context, next); |
| 1194 | /* |
| 1195 | * Check if the queue is getting |
| 1196 | * backlogged |
| 1197 | */ |
| 1198 | if (fibctx->count > 20) |
| 1199 | { |
| 1200 | /* |
| 1201 | * It's *not* jiffies folks, |
| 1202 | * but jiffies / HZ so do not |
| 1203 | * panic ... |
| 1204 | */ |
| 1205 | time_last = fibctx->jiffies; |
| 1206 | /* |
| 1207 | * Has it been > 2 minutes |
| 1208 | * since the last read off |
| 1209 | * the queue? |
| 1210 | */ |
Mark Haverkamp | 404d9a9 | 2006-05-10 09:12:48 -0700 | [diff] [blame] | 1211 | if ((time_now - time_last) > aif_timeout) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1212 | entry = entry->next; |
| 1213 | aac_close_fib_context(dev, fibctx); |
| 1214 | continue; |
| 1215 | } |
| 1216 | } |
| 1217 | /* |
| 1218 | * Warning: no sleep allowed while |
| 1219 | * holding spinlock |
| 1220 | */ |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1221 | if (hw_fib_p < &hw_fib_pool[num]) { |
| 1222 | hw_newfib = *hw_fib_p; |
| 1223 | *(hw_fib_p++) = NULL; |
| 1224 | newfib = *fib_p; |
| 1225 | *(fib_p++) = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1226 | /* |
| 1227 | * Make the copy of the FIB |
| 1228 | */ |
| 1229 | memcpy(hw_newfib, hw_fib, sizeof(struct hw_fib)); |
| 1230 | memcpy(newfib, fib, sizeof(struct fib)); |
| 1231 | newfib->hw_fib = hw_newfib; |
| 1232 | /* |
| 1233 | * Put the FIB onto the |
| 1234 | * fibctx's fibs |
| 1235 | */ |
| 1236 | list_add_tail(&newfib->fiblink, &fibctx->fib_list); |
| 1237 | fibctx->count++; |
| 1238 | /* |
| 1239 | * Set the event to wake up the |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1240 | * thread that is waiting. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1241 | */ |
| 1242 | up(&fibctx->wait_sem); |
| 1243 | } else { |
| 1244 | printk(KERN_WARNING "aifd: didn't allocate NewFib.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1245 | } |
| 1246 | entry = entry->next; |
| 1247 | } |
| 1248 | /* |
| 1249 | * Set the status of this FIB |
| 1250 | */ |
Mark Haverkamp | 56b5871 | 2005-04-27 06:05:51 -0700 | [diff] [blame] | 1251 | *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK); |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 1252 | aac_fib_adapter_complete(fib, sizeof(u32)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1253 | spin_unlock_irqrestore(&dev->fib_lock, flagv); |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1254 | /* Free up the remaining resources */ |
| 1255 | hw_fib_p = hw_fib_pool; |
| 1256 | fib_p = fib_pool; |
| 1257 | while (hw_fib_p < &hw_fib_pool[num]) { |
Jesper Juhl | c9475cb | 2005-11-07 01:01:26 -0800 | [diff] [blame] | 1258 | kfree(*hw_fib_p); |
| 1259 | kfree(*fib_p); |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1260 | ++fib_p; |
| 1261 | ++hw_fib_p; |
| 1262 | } |
Jesper Juhl | c9475cb | 2005-11-07 01:01:26 -0800 | [diff] [blame] | 1263 | kfree(hw_fib_pool); |
| 1264 | kfree(fib_pool); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1265 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1266 | kfree(fib); |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1267 | spin_lock_irqsave(dev->queues->queue[HostNormCmdQueue].lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1268 | } |
| 1269 | /* |
| 1270 | * There are no more AIF's |
| 1271 | */ |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1272 | spin_unlock_irqrestore(dev->queues->queue[HostNormCmdQueue].lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1273 | schedule(); |
| 1274 | |
Christoph Hellwig | fe27381 | 2006-02-14 18:45:06 +0100 | [diff] [blame] | 1275 | if (kthread_should_stop()) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1276 | break; |
| 1277 | set_current_state(TASK_INTERRUPTIBLE); |
| 1278 | } |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1279 | if (dev->queues) |
| 1280 | remove_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1281 | dev->aif_thread = 0; |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1282 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1283 | } |