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 | * |
Mark Haverkamp | 03d4433 | 2007-03-15 10:27:45 -0700 | [diff] [blame] | 8 | * Copyright (c) 2000-2007 Adaptec, Inc. (aacraid@adaptec.com) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Al Viro | 6a3670c | 2006-09-24 23:45:29 +0100 | [diff] [blame] | 43 | #include <linux/interrupt.h> |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 44 | #include <scsi/scsi.h> |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 45 | #include <scsi/scsi_host.h> |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 46 | #include <scsi/scsi_device.h> |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 47 | #include <scsi/scsi_cmnd.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #include <asm/semaphore.h> |
| 49 | |
| 50 | #include "aacraid.h" |
| 51 | |
| 52 | /** |
| 53 | * fib_map_alloc - allocate the fib objects |
| 54 | * @dev: Adapter to allocate for |
| 55 | * |
| 56 | * Allocate and map the shared PCI space for the FIB blocks used to |
| 57 | * talk to the Adaptec firmware. |
| 58 | */ |
| 59 | |
| 60 | static int fib_map_alloc(struct aac_dev *dev) |
| 61 | { |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 62 | dprintk((KERN_INFO |
| 63 | "allocate hardware fibs pci_alloc_consistent(%p, %d * (%d + %d), %p)\n", |
| 64 | dev->pdev, dev->max_fib_size, dev->scsi_host_ptr->can_queue, |
| 65 | AAC_NUM_MGT_FIB, &dev->hw_fib_pa)); |
| 66 | if((dev->hw_fib_va = pci_alloc_consistent(dev->pdev, dev->max_fib_size |
| 67 | * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB), |
| 68 | &dev->hw_fib_pa))==NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | return -ENOMEM; |
| 70 | return 0; |
| 71 | } |
| 72 | |
| 73 | /** |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 74 | * aac_fib_map_free - free the fib objects |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | * @dev: Adapter to free |
| 76 | * |
| 77 | * Free the PCI mappings and the memory allocated for FIB blocks |
| 78 | * on this adapter. |
| 79 | */ |
| 80 | |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 81 | void aac_fib_map_free(struct aac_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | { |
Salyzyn, Mark | 9ad5204 | 2007-07-17 11:15:08 -0400 | [diff] [blame] | 83 | pci_free_consistent(dev->pdev, |
| 84 | dev->max_fib_size * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB), |
| 85 | dev->hw_fib_va, dev->hw_fib_pa); |
| 86 | dev->hw_fib_va = NULL; |
| 87 | dev->hw_fib_pa = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | } |
| 89 | |
| 90 | /** |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 91 | * aac_fib_setup - setup the fibs |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | * @dev: Adapter to set up |
| 93 | * |
| 94 | * Allocate the PCI space for the fibs, map it and then intialise the |
| 95 | * fib area, the unmapped fib data and also the free list |
| 96 | */ |
| 97 | |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 98 | int aac_fib_setup(struct aac_dev * dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | { |
| 100 | struct fib *fibptr; |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 101 | struct hw_fib *hw_fib; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | dma_addr_t hw_fib_pa; |
| 103 | int i; |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 104 | |
| 105 | while (((i = fib_map_alloc(dev)) == -ENOMEM) |
| 106 | && (dev->scsi_host_ptr->can_queue > (64 - AAC_NUM_MGT_FIB))) { |
| 107 | dev->init->MaxIoCommands = cpu_to_le32((dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) >> 1); |
| 108 | dev->scsi_host_ptr->can_queue = le32_to_cpu(dev->init->MaxIoCommands) - AAC_NUM_MGT_FIB; |
| 109 | } |
| 110 | if (i<0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | return -ENOMEM; |
| 112 | |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 113 | hw_fib = dev->hw_fib_va; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | hw_fib_pa = dev->hw_fib_pa; |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 115 | memset(hw_fib, 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] | 116 | /* |
| 117 | * Initialise the fibs |
| 118 | */ |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 119 | 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] | 120 | { |
| 121 | fibptr->dev = dev; |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 122 | fibptr->hw_fib_va = hw_fib; |
| 123 | fibptr->data = (void *) fibptr->hw_fib_va->data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | fibptr->next = fibptr+1; /* Forward chain the fibs */ |
| 125 | init_MUTEX_LOCKED(&fibptr->event_wait); |
| 126 | spin_lock_init(&fibptr->event_lock); |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 127 | hw_fib->header.XferState = cpu_to_le32(0xffffffff); |
| 128 | hw_fib->header.SenderSize = cpu_to_le16(dev->max_fib_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | fibptr->hw_fib_pa = hw_fib_pa; |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 130 | hw_fib = (struct hw_fib *)((unsigned char *)hw_fib + dev->max_fib_size); |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 131 | hw_fib_pa = hw_fib_pa + dev->max_fib_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | } |
| 133 | /* |
| 134 | * Add the fib chain to the free list |
| 135 | */ |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 136 | 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] | 137 | /* |
| 138 | * Enable this to debug out of queue space |
| 139 | */ |
| 140 | dev->free_fib = &dev->fibs[0]; |
| 141 | return 0; |
| 142 | } |
| 143 | |
| 144 | /** |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 145 | * aac_fib_alloc - allocate a fib |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | * @dev: Adapter to allocate the fib for |
| 147 | * |
| 148 | * 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] | 149 | * return NULL. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | */ |
| 151 | |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 152 | struct fib *aac_fib_alloc(struct aac_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | { |
| 154 | struct fib * fibptr; |
| 155 | unsigned long flags; |
| 156 | spin_lock_irqsave(&dev->fib_lock, flags); |
| 157 | fibptr = dev->free_fib; |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 158 | if(!fibptr){ |
| 159 | spin_unlock_irqrestore(&dev->fib_lock, flags); |
| 160 | return fibptr; |
| 161 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | dev->free_fib = fibptr->next; |
| 163 | spin_unlock_irqrestore(&dev->fib_lock, flags); |
| 164 | /* |
| 165 | * Set the proper node type code and node byte size |
| 166 | */ |
| 167 | fibptr->type = FSAFS_NTC_FIB_CONTEXT; |
| 168 | fibptr->size = sizeof(struct fib); |
| 169 | /* |
| 170 | * Null out fields that depend on being zero at the start of |
| 171 | * each I/O |
| 172 | */ |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 173 | fibptr->hw_fib_va->header.XferState = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | fibptr->callback = NULL; |
| 175 | fibptr->callback_data = NULL; |
| 176 | |
| 177 | return fibptr; |
| 178 | } |
| 179 | |
| 180 | /** |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 181 | * aac_fib_free - free a fib |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | * @fibptr: fib to free up |
| 183 | * |
| 184 | * Frees up a fib and places it on the appropriate queue |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | */ |
| 186 | |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 187 | void aac_fib_free(struct fib *fibptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | { |
| 189 | unsigned long flags; |
| 190 | |
| 191 | spin_lock_irqsave(&fibptr->dev->fib_lock, flags); |
Mark Haverkamp | 03d4433 | 2007-03-15 10:27:45 -0700 | [diff] [blame] | 192 | if (unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | aac_config.fib_timeouts++; |
Mark Haverkamp | 03d4433 | 2007-03-15 10:27:45 -0700 | [diff] [blame] | 194 | if (fibptr->hw_fib_va->header.XferState != 0) { |
| 195 | printk(KERN_WARNING "aac_fib_free, XferState != 0, fibptr = 0x%p, XferState = 0x%x\n", |
| 196 | (void*)fibptr, |
| 197 | le32_to_cpu(fibptr->hw_fib_va->header.XferState)); |
| 198 | } |
| 199 | fibptr->next = fibptr->dev->free_fib; |
| 200 | fibptr->dev->free_fib = fibptr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | spin_unlock_irqrestore(&fibptr->dev->fib_lock, flags); |
| 202 | } |
| 203 | |
| 204 | /** |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 205 | * aac_fib_init - initialise a fib |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | * @fibptr: The fib to initialize |
| 207 | * |
| 208 | * Set up the generic fib fields ready for use |
| 209 | */ |
| 210 | |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 211 | void aac_fib_init(struct fib *fibptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | { |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 213 | struct hw_fib *hw_fib = fibptr->hw_fib_va; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | |
| 215 | hw_fib->header.StructType = FIB_MAGIC; |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 216 | hw_fib->header.Size = cpu_to_le16(fibptr->dev->max_fib_size); |
| 217 | hw_fib->header.XferState = cpu_to_le32(HostOwned | FibInitialized | FibEmpty | FastResponseCapable); |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 218 | hw_fib->header.SenderFibAddress = 0; /* Filled in later if needed */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | hw_fib->header.ReceiverFibAddress = cpu_to_le32(fibptr->hw_fib_pa); |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 220 | hw_fib->header.SenderSize = cpu_to_le16(fibptr->dev->max_fib_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | } |
| 222 | |
| 223 | /** |
| 224 | * fib_deallocate - deallocate a fib |
| 225 | * @fibptr: fib to deallocate |
| 226 | * |
| 227 | * Will deallocate and return to the free pool the FIB pointed to by the |
| 228 | * caller. |
| 229 | */ |
| 230 | |
Adrian Bunk | 4833869 | 2005-04-25 19:45:58 -0700 | [diff] [blame] | 231 | static void fib_dealloc(struct fib * fibptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | { |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 233 | struct hw_fib *hw_fib = fibptr->hw_fib_va; |
Eric Sesterhenn | 125e187 | 2006-06-23 02:06:06 -0700 | [diff] [blame] | 234 | BUG_ON(hw_fib->header.StructType != FIB_MAGIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | hw_fib->header.XferState = 0; |
| 236 | } |
| 237 | |
| 238 | /* |
| 239 | * Commuication primitives define and support the queuing method we use to |
| 240 | * support host to adapter commuication. All queue accesses happen through |
| 241 | * these routines and are the only routines which have a knowledge of the |
| 242 | * how these queues are implemented. |
| 243 | */ |
| 244 | |
| 245 | /** |
| 246 | * aac_get_entry - get a queue entry |
| 247 | * @dev: Adapter |
| 248 | * @qid: Queue Number |
| 249 | * @entry: Entry return |
| 250 | * @index: Index return |
| 251 | * @nonotify: notification control |
| 252 | * |
| 253 | * With a priority the routine returns a queue entry if the queue has free entries. If the queue |
| 254 | * is full(no free entries) than no entry is returned and the function returns 0 otherwise 1 is |
| 255 | * returned. |
| 256 | */ |
| 257 | |
| 258 | static int aac_get_entry (struct aac_dev * dev, u32 qid, struct aac_entry **entry, u32 * index, unsigned long *nonotify) |
| 259 | { |
| 260 | struct aac_queue * q; |
Mark Haverkamp | bed30de | 2005-08-03 15:38:51 -0700 | [diff] [blame] | 261 | unsigned long idx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | |
| 263 | /* |
| 264 | * All of the queues wrap when they reach the end, so we check |
| 265 | * to see if they have reached the end and if they have we just |
| 266 | * set the index back to zero. This is a wrap. You could or off |
| 267 | * the high bits in all updates but this is a bit faster I think. |
| 268 | */ |
| 269 | |
| 270 | q = &dev->queues->queue[qid]; |
Mark Haverkamp | bed30de | 2005-08-03 15:38:51 -0700 | [diff] [blame] | 271 | |
| 272 | idx = *index = le32_to_cpu(*(q->headers.producer)); |
| 273 | /* Interrupt Moderation, only interrupt for first two entries */ |
| 274 | if (idx != le32_to_cpu(*(q->headers.consumer))) { |
| 275 | if (--idx == 0) { |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 276 | if (qid == AdapNormCmdQueue) |
Mark Haverkamp | bed30de | 2005-08-03 15:38:51 -0700 | [diff] [blame] | 277 | idx = ADAP_NORM_CMD_ENTRIES; |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 278 | else |
Mark Haverkamp | bed30de | 2005-08-03 15:38:51 -0700 | [diff] [blame] | 279 | idx = ADAP_NORM_RESP_ENTRIES; |
| 280 | } |
| 281 | if (idx != le32_to_cpu(*(q->headers.consumer))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | *nonotify = 1; |
Mark Haverkamp | bed30de | 2005-08-03 15:38:51 -0700 | [diff] [blame] | 283 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 285 | if (qid == AdapNormCmdQueue) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | if (*index >= ADAP_NORM_CMD_ENTRIES) |
| 287 | *index = 0; /* Wrap to front of the Producer Queue. */ |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 288 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | if (*index >= ADAP_NORM_RESP_ENTRIES) |
| 290 | *index = 0; /* Wrap to front of the Producer Queue. */ |
| 291 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | |
| 293 | if ((*index + 1) == le32_to_cpu(*(q->headers.consumer))) { /* Queue is full */ |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 294 | printk(KERN_WARNING "Queue %d full, %u outstanding.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | qid, q->numpending); |
| 296 | return 0; |
| 297 | } else { |
| 298 | *entry = q->base + *index; |
| 299 | return 1; |
| 300 | } |
| 301 | } |
| 302 | |
| 303 | /** |
| 304 | * aac_queue_get - get the next free QE |
| 305 | * @dev: Adapter |
| 306 | * @index: Returned index |
| 307 | * @priority: Priority of fib |
| 308 | * @fib: Fib to associate with the queue entry |
| 309 | * @wait: Wait if queue full |
| 310 | * @fibptr: Driver fib object to go with fib |
| 311 | * @nonotify: Don't notify the adapter |
| 312 | * |
| 313 | * Gets the next free QE off the requested priorty adapter command |
| 314 | * queue and associates the Fib with the QE. The QE represented by |
| 315 | * index is ready to insert on the queue when this routine returns |
| 316 | * success. |
| 317 | */ |
| 318 | |
Mark Haverkamp | 2871332 | 2007-01-23 14:59:20 -0800 | [diff] [blame] | 319 | 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) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | { |
| 321 | struct aac_entry * entry = NULL; |
| 322 | int map = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 324 | if (qid == AdapNormCmdQueue) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | /* if no entries wait for some if caller wants to */ |
| 326 | while (!aac_get_entry(dev, qid, &entry, index, nonotify)) |
| 327 | { |
| 328 | printk(KERN_ERR "GetEntries failed\n"); |
| 329 | } |
| 330 | /* |
| 331 | * Setup queue entry with a command, status and fib mapped |
| 332 | */ |
| 333 | entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size)); |
| 334 | map = 1; |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 335 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | while(!aac_get_entry(dev, qid, &entry, index, nonotify)) |
| 337 | { |
| 338 | /* if no entries wait for some if caller wants to */ |
| 339 | } |
| 340 | /* |
| 341 | * Setup queue entry with command, status and fib mapped |
| 342 | */ |
| 343 | entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size)); |
| 344 | entry->addr = hw_fib->header.SenderFibAddress; |
| 345 | /* Restore adapters pointer to the FIB */ |
| 346 | hw_fib->header.ReceiverFibAddress = hw_fib->header.SenderFibAddress; /* Let the adapter now where to find its data */ |
| 347 | map = 0; |
| 348 | } |
| 349 | /* |
| 350 | * If MapFib is true than we need to map the Fib and put pointers |
| 351 | * in the queue entry. |
| 352 | */ |
| 353 | if (map) |
| 354 | entry->addr = cpu_to_le32(fibptr->hw_fib_pa); |
| 355 | return 0; |
| 356 | } |
| 357 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | /* |
| 359 | * Define the highest level of host to adapter communication routines. |
| 360 | * These routines will support host to adapter FS commuication. These |
| 361 | * routines have no knowledge of the commuication method used. This level |
| 362 | * sends and receives FIBs. This level has no knowledge of how these FIBs |
| 363 | * get passed back and forth. |
| 364 | */ |
| 365 | |
| 366 | /** |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 367 | * aac_fib_send - send a fib to the adapter |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | * @command: Command to send |
| 369 | * @fibptr: The fib |
| 370 | * @size: Size of fib data area |
| 371 | * @priority: Priority of Fib |
| 372 | * @wait: Async/sync select |
| 373 | * @reply: True if a reply is wanted |
| 374 | * @callback: Called with reply |
| 375 | * @callback_data: Passed to callback |
| 376 | * |
| 377 | * Sends the requested FIB to the adapter and optionally will wait for a |
| 378 | * response FIB. If the caller does not wish to wait for a response than |
| 379 | * an event to wait on must be supplied. This event will be set when a |
| 380 | * response FIB is received from the adapter. |
| 381 | */ |
| 382 | |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 383 | int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size, |
| 384 | int priority, int wait, int reply, fib_callback callback, |
| 385 | void *callback_data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | struct aac_dev * dev = fibptr->dev; |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 388 | struct hw_fib * hw_fib = fibptr->hw_fib_va; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | unsigned long flags = 0; |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 390 | unsigned long qflags; |
| 391 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | if (!(hw_fib->header.XferState & cpu_to_le32(HostOwned))) |
| 393 | return -EBUSY; |
| 394 | /* |
| 395 | * There are 5 cases with the wait and reponse requested flags. |
| 396 | * The only invalid cases are if the caller requests to wait and |
| 397 | * does not request a response and if the caller does not want a |
| 398 | * response and the Fib is not allocated from pool. If a response |
| 399 | * is not requesed the Fib will just be deallocaed by the DPC |
| 400 | * routine when the response comes back from the adapter. No |
| 401 | * further processing will be done besides deleting the Fib. We |
| 402 | * will have a debug mode where the adapter can notify the host |
| 403 | * it had a problem and the host can log that fact. |
| 404 | */ |
| 405 | if (wait && !reply) { |
| 406 | return -EINVAL; |
| 407 | } else if (!wait && reply) { |
| 408 | hw_fib->header.XferState |= cpu_to_le32(Async | ResponseExpected); |
| 409 | FIB_COUNTER_INCREMENT(aac_config.AsyncSent); |
| 410 | } else if (!wait && !reply) { |
| 411 | hw_fib->header.XferState |= cpu_to_le32(NoResponseExpected); |
| 412 | FIB_COUNTER_INCREMENT(aac_config.NoResponseSent); |
| 413 | } else if (wait && reply) { |
| 414 | hw_fib->header.XferState |= cpu_to_le32(ResponseExpected); |
| 415 | FIB_COUNTER_INCREMENT(aac_config.NormalSent); |
| 416 | } |
| 417 | /* |
| 418 | * Map the fib into 32bits by using the fib number |
| 419 | */ |
| 420 | |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 421 | hw_fib->header.SenderFibAddress = cpu_to_le32(((u32)(fibptr - dev->fibs)) << 2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | hw_fib->header.SenderData = (u32)(fibptr - dev->fibs); |
| 423 | /* |
| 424 | * Set FIB state to indicate where it came from and if we want a |
| 425 | * response from the adapter. Also load the command from the |
| 426 | * caller. |
| 427 | * |
| 428 | * Map the hw fib pointer as a 32bit value |
| 429 | */ |
| 430 | hw_fib->header.Command = cpu_to_le16(command); |
| 431 | hw_fib->header.XferState |= cpu_to_le32(SentFromHost); |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 432 | fibptr->hw_fib_va->header.Flags = 0; /* 0 the flags field - internal only*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | /* |
| 434 | * Set the size of the Fib we want to send to the adapter |
| 435 | */ |
| 436 | hw_fib->header.Size = cpu_to_le16(sizeof(struct aac_fibhdr) + size); |
| 437 | if (le16_to_cpu(hw_fib->header.Size) > le16_to_cpu(hw_fib->header.SenderSize)) { |
| 438 | return -EMSGSIZE; |
| 439 | } |
| 440 | /* |
| 441 | * Get a queue entry connect the FIB to it and send an notify |
| 442 | * the adapter a command is ready. |
| 443 | */ |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 444 | hw_fib->header.XferState |= cpu_to_le32(NormalPriority); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | /* |
| 447 | * Fill in the Callback and CallbackContext if we are not |
| 448 | * going to wait. |
| 449 | */ |
| 450 | if (!wait) { |
| 451 | fibptr->callback = callback; |
| 452 | fibptr->callback_data = callback_data; |
| 453 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | |
| 455 | fibptr->done = 0; |
| 456 | fibptr->flags = 0; |
| 457 | |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 458 | FIB_COUNTER_INCREMENT(aac_config.FibsSent); |
| 459 | |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 460 | dprintk((KERN_DEBUG "Fib contents:.\n")); |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 461 | dprintk((KERN_DEBUG " Command = %d.\n", le32_to_cpu(hw_fib->header.Command))); |
| 462 | dprintk((KERN_DEBUG " SubCommand = %d.\n", le32_to_cpu(((struct aac_query_mount *)fib_data(fibptr))->command))); |
| 463 | dprintk((KERN_DEBUG " XferState = %x.\n", le32_to_cpu(hw_fib->header.XferState))); |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 464 | dprintk((KERN_DEBUG " hw_fib va being sent=%p\n",fibptr->hw_fib_va)); |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 465 | dprintk((KERN_DEBUG " hw_fib pa being sent=%lx\n",(ulong)fibptr->hw_fib_pa)); |
| 466 | dprintk((KERN_DEBUG " fib being sent=%p\n",fibptr)); |
| 467 | |
Mark Haverkamp | c8f7b07 | 2006-08-03 08:02:24 -0700 | [diff] [blame] | 468 | if (!dev->queues) |
Mark Haverkamp | 65101355 | 2006-09-19 08:59:23 -0700 | [diff] [blame] | 469 | return -EBUSY; |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 470 | |
| 471 | if(wait) |
| 472 | spin_lock_irqsave(&fibptr->event_lock, flags); |
Mark Haverkamp | 2871332 | 2007-01-23 14:59:20 -0800 | [diff] [blame] | 473 | aac_adapter_deliver(fibptr); |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 474 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | /* |
| 476 | * If the caller wanted us to wait for response wait now. |
| 477 | */ |
| 478 | |
| 479 | if (wait) { |
| 480 | spin_unlock_irqrestore(&fibptr->event_lock, flags); |
Mark Haverkamp | 9203344 | 2005-09-20 12:56:50 -0700 | [diff] [blame] | 481 | /* Only set for first known interruptable command */ |
| 482 | if (wait < 0) { |
| 483 | /* |
| 484 | * *VERY* Dangerous to time out a command, the |
| 485 | * assumption is made that we have no hope of |
| 486 | * functioning because an interrupt routing or other |
| 487 | * hardware failure has occurred. |
| 488 | */ |
| 489 | unsigned long count = 36000000L; /* 3 minutes */ |
Mark Haverkamp | 9203344 | 2005-09-20 12:56:50 -0700 | [diff] [blame] | 490 | while (down_trylock(&fibptr->event_wait)) { |
Mark Haverkamp | 33524b7 | 2006-11-21 10:40:08 -0800 | [diff] [blame] | 491 | int blink; |
Mark Haverkamp | 9203344 | 2005-09-20 12:56:50 -0700 | [diff] [blame] | 492 | if (--count == 0) { |
Mark Haverkamp | 2871332 | 2007-01-23 14:59:20 -0800 | [diff] [blame] | 493 | struct aac_queue * q = &dev->queues->queue[AdapNormCmdQueue]; |
Mark Haverkamp | 9203344 | 2005-09-20 12:56:50 -0700 | [diff] [blame] | 494 | spin_lock_irqsave(q->lock, qflags); |
| 495 | q->numpending--; |
Mark Haverkamp | 9203344 | 2005-09-20 12:56:50 -0700 | [diff] [blame] | 496 | spin_unlock_irqrestore(q->lock, qflags); |
| 497 | if (wait == -1) { |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 498 | 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] | 499 | "Usually a result of a PCI interrupt routing problem;\n" |
| 500 | "update mother board BIOS or consider utilizing one of\n" |
| 501 | "the SAFE mode kernel options (acpi, apic etc)\n"); |
| 502 | } |
| 503 | return -ETIMEDOUT; |
| 504 | } |
Mark Haverkamp | 33524b7 | 2006-11-21 10:40:08 -0800 | [diff] [blame] | 505 | if ((blink = aac_adapter_check_health(dev)) > 0) { |
| 506 | if (wait == -1) { |
| 507 | printk(KERN_ERR "aacraid: aac_fib_send: adapter blinkLED 0x%x.\n" |
| 508 | "Usually a result of a serious unrecoverable hardware problem\n", |
| 509 | blink); |
| 510 | } |
| 511 | return -EFAULT; |
| 512 | } |
Mark Haverkamp | 9203344 | 2005-09-20 12:56:50 -0700 | [diff] [blame] | 513 | udelay(5); |
| 514 | } |
Mark Haverkamp | 33bb3b2 | 2007-03-15 10:27:21 -0700 | [diff] [blame] | 515 | } else |
| 516 | (void)down_interruptible(&fibptr->event_wait); |
| 517 | spin_lock_irqsave(&fibptr->event_lock, flags); |
| 518 | if (fibptr->done == 0) { |
| 519 | fibptr->done = 2; /* Tell interrupt we aborted */ |
Mark Haverkamp | c8f7b07 | 2006-08-03 08:02:24 -0700 | [diff] [blame] | 520 | spin_unlock_irqrestore(&fibptr->event_lock, flags); |
Mark Haverkamp | 33bb3b2 | 2007-03-15 10:27:21 -0700 | [diff] [blame] | 521 | return -EINTR; |
Mark Haverkamp | c8f7b07 | 2006-08-03 08:02:24 -0700 | [diff] [blame] | 522 | } |
Mark Haverkamp | 33bb3b2 | 2007-03-15 10:27:21 -0700 | [diff] [blame] | 523 | spin_unlock_irqrestore(&fibptr->event_lock, flags); |
Eric Sesterhenn | 125e187 | 2006-06-23 02:06:06 -0700 | [diff] [blame] | 524 | BUG_ON(fibptr->done == 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | |
Salyzyn, Mark | 912d4e8 | 2007-03-26 09:21:14 -0400 | [diff] [blame] | 526 | if(unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | return -ETIMEDOUT; |
Salyzyn, Mark | 912d4e8 | 2007-03-26 09:21:14 -0400 | [diff] [blame] | 528 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | } |
| 530 | /* |
| 531 | * If the user does not want a response than return success otherwise |
| 532 | * return pending |
| 533 | */ |
| 534 | if (reply) |
| 535 | return -EINPROGRESS; |
| 536 | else |
| 537 | return 0; |
| 538 | } |
| 539 | |
| 540 | /** |
| 541 | * aac_consumer_get - get the top of the queue |
| 542 | * @dev: Adapter |
| 543 | * @q: Queue |
| 544 | * @entry: Return entry |
| 545 | * |
| 546 | * Will return a pointer to the entry on the top of the queue requested that |
| 547 | * we are a consumer of, and return the address of the queue entry. It does |
| 548 | * not change the state of the queue. |
| 549 | */ |
| 550 | |
| 551 | int aac_consumer_get(struct aac_dev * dev, struct aac_queue * q, struct aac_entry **entry) |
| 552 | { |
| 553 | u32 index; |
| 554 | int status; |
| 555 | if (le32_to_cpu(*q->headers.producer) == le32_to_cpu(*q->headers.consumer)) { |
| 556 | status = 0; |
| 557 | } else { |
| 558 | /* |
| 559 | * The consumer index must be wrapped if we have reached |
| 560 | * the end of the queue, else we just use the entry |
| 561 | * pointed to by the header index |
| 562 | */ |
| 563 | if (le32_to_cpu(*q->headers.consumer) >= q->entries) |
| 564 | index = 0; |
| 565 | else |
| 566 | index = le32_to_cpu(*q->headers.consumer); |
| 567 | *entry = q->base + index; |
| 568 | status = 1; |
| 569 | } |
| 570 | return(status); |
| 571 | } |
| 572 | |
| 573 | /** |
| 574 | * aac_consumer_free - free consumer entry |
| 575 | * @dev: Adapter |
| 576 | * @q: Queue |
| 577 | * @qid: Queue ident |
| 578 | * |
| 579 | * Frees up the current top of the queue we are a consumer of. If the |
| 580 | * queue was full notify the producer that the queue is no longer full. |
| 581 | */ |
| 582 | |
| 583 | void aac_consumer_free(struct aac_dev * dev, struct aac_queue *q, u32 qid) |
| 584 | { |
| 585 | int wasfull = 0; |
| 586 | u32 notify; |
| 587 | |
| 588 | if ((le32_to_cpu(*q->headers.producer)+1) == le32_to_cpu(*q->headers.consumer)) |
| 589 | wasfull = 1; |
| 590 | |
| 591 | if (le32_to_cpu(*q->headers.consumer) >= q->entries) |
| 592 | *q->headers.consumer = cpu_to_le32(1); |
| 593 | else |
| 594 | *q->headers.consumer = cpu_to_le32(le32_to_cpu(*q->headers.consumer)+1); |
| 595 | |
| 596 | if (wasfull) { |
| 597 | switch (qid) { |
| 598 | |
| 599 | case HostNormCmdQueue: |
| 600 | notify = HostNormCmdNotFull; |
| 601 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | case HostNormRespQueue: |
| 603 | notify = HostNormRespNotFull; |
| 604 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | default: |
| 606 | BUG(); |
| 607 | return; |
| 608 | } |
| 609 | aac_adapter_notify(dev, notify); |
| 610 | } |
| 611 | } |
| 612 | |
| 613 | /** |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 614 | * aac_fib_adapter_complete - complete adapter issued fib |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | * @fibptr: fib to complete |
| 616 | * @size: size of fib |
| 617 | * |
| 618 | * Will do all necessary work to complete a FIB that was sent from |
| 619 | * the adapter. |
| 620 | */ |
| 621 | |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 622 | int aac_fib_adapter_complete(struct fib *fibptr, unsigned short size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | { |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 624 | struct hw_fib * hw_fib = fibptr->hw_fib_va; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | struct aac_dev * dev = fibptr->dev; |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 626 | struct aac_queue * q; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | unsigned long nointr = 0; |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 628 | unsigned long qflags; |
| 629 | |
| 630 | if (hw_fib->header.XferState == 0) { |
Mark Haverkamp | 2871332 | 2007-01-23 14:59:20 -0800 | [diff] [blame] | 631 | if (dev->comm_interface == AAC_COMM_MESSAGE) |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 632 | kfree (hw_fib); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | return 0; |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 634 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | /* |
| 636 | * If we plan to do anything check the structure type first. |
| 637 | */ |
| 638 | if ( hw_fib->header.StructType != FIB_MAGIC ) { |
Mark Haverkamp | 2871332 | 2007-01-23 14:59:20 -0800 | [diff] [blame] | 639 | if (dev->comm_interface == AAC_COMM_MESSAGE) |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 640 | kfree (hw_fib); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | return -EINVAL; |
| 642 | } |
| 643 | /* |
| 644 | * This block handles the case where the adapter had sent us a |
| 645 | * command and we have finished processing the command. We |
| 646 | * call completeFib when we are done processing the command |
| 647 | * and want to send a response back to the adapter. This will |
| 648 | * send the completed cdb to the adapter. |
| 649 | */ |
| 650 | if (hw_fib->header.XferState & cpu_to_le32(SentFromAdapter)) { |
Mark Haverkamp | 2871332 | 2007-01-23 14:59:20 -0800 | [diff] [blame] | 651 | if (dev->comm_interface == AAC_COMM_MESSAGE) { |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 652 | kfree (hw_fib); |
| 653 | } else { |
| 654 | u32 index; |
| 655 | hw_fib->header.XferState |= cpu_to_le32(HostProcessed); |
| 656 | if (size) { |
| 657 | size += sizeof(struct aac_fibhdr); |
| 658 | if (size > le16_to_cpu(hw_fib->header.SenderSize)) |
| 659 | return -EMSGSIZE; |
| 660 | hw_fib->header.Size = cpu_to_le16(size); |
| 661 | } |
| 662 | q = &dev->queues->queue[AdapNormRespQueue]; |
| 663 | spin_lock_irqsave(q->lock, qflags); |
| 664 | aac_queue_get(dev, &index, AdapNormRespQueue, hw_fib, 1, NULL, &nointr); |
| 665 | *(q->headers.producer) = cpu_to_le32(index + 1); |
| 666 | spin_unlock_irqrestore(q->lock, qflags); |
| 667 | if (!(nointr & (int)aac_config.irq_mod)) |
| 668 | aac_adapter_notify(dev, AdapNormRespQueue); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | } |
| 670 | } |
| 671 | else |
| 672 | { |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 673 | printk(KERN_WARNING "aac_fib_adapter_complete: Unknown xferstate detected.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | BUG(); |
| 675 | } |
| 676 | return 0; |
| 677 | } |
| 678 | |
| 679 | /** |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 680 | * aac_fib_complete - fib completion handler |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | * @fib: FIB to complete |
| 682 | * |
| 683 | * Will do all necessary work to complete a FIB. |
| 684 | */ |
| 685 | |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 686 | int aac_fib_complete(struct fib *fibptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | { |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 688 | struct hw_fib * hw_fib = fibptr->hw_fib_va; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | |
| 690 | /* |
| 691 | * Check for a fib which has already been completed |
| 692 | */ |
| 693 | |
| 694 | if (hw_fib->header.XferState == 0) |
| 695 | return 0; |
| 696 | /* |
| 697 | * If we plan to do anything check the structure type first. |
| 698 | */ |
| 699 | |
| 700 | if (hw_fib->header.StructType != FIB_MAGIC) |
| 701 | return -EINVAL; |
| 702 | /* |
| 703 | * This block completes a cdb which orginated on the host and we |
| 704 | * just need to deallocate the cdb or reinit it. At this point the |
| 705 | * command is complete that we had sent to the adapter and this |
| 706 | * cdb could be reused. |
| 707 | */ |
| 708 | if((hw_fib->header.XferState & cpu_to_le32(SentFromHost)) && |
| 709 | (hw_fib->header.XferState & cpu_to_le32(AdapterProcessed))) |
| 710 | { |
| 711 | fib_dealloc(fibptr); |
| 712 | } |
| 713 | else if(hw_fib->header.XferState & cpu_to_le32(SentFromHost)) |
| 714 | { |
| 715 | /* |
| 716 | * This handles the case when the host has aborted the I/O |
| 717 | * to the adapter because the adapter is not responding |
| 718 | */ |
| 719 | fib_dealloc(fibptr); |
| 720 | } else if(hw_fib->header.XferState & cpu_to_le32(HostOwned)) { |
| 721 | fib_dealloc(fibptr); |
| 722 | } else { |
| 723 | BUG(); |
| 724 | } |
| 725 | return 0; |
| 726 | } |
| 727 | |
| 728 | /** |
| 729 | * aac_printf - handle printf from firmware |
| 730 | * @dev: Adapter |
| 731 | * @val: Message info |
| 732 | * |
| 733 | * Print a message passed to us by the controller firmware on the |
| 734 | * Adaptec board |
| 735 | */ |
| 736 | |
| 737 | void aac_printf(struct aac_dev *dev, u32 val) |
| 738 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | char *cp = dev->printfbuf; |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 740 | if (dev->printf_enabled) |
| 741 | { |
| 742 | int length = val & 0xffff; |
| 743 | int level = (val >> 16) & 0xffff; |
| 744 | |
| 745 | /* |
| 746 | * The size of the printfbuf is set in port.c |
| 747 | * There is no variable or define for it |
| 748 | */ |
| 749 | if (length > 255) |
| 750 | length = 255; |
| 751 | if (cp[length] != 0) |
| 752 | cp[length] = 0; |
| 753 | if (level == LOG_AAC_HIGH_ERROR) |
Mark Haverkamp | 1241f35 | 2006-03-27 09:44:23 -0800 | [diff] [blame] | 754 | printk(KERN_WARNING "%s:%s", dev->name, cp); |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 755 | else |
Mark Haverkamp | 1241f35 | 2006-03-27 09:44:23 -0800 | [diff] [blame] | 756 | printk(KERN_INFO "%s:%s", dev->name, cp); |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 757 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | memset(cp, 0, 256); |
| 759 | } |
| 760 | |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 761 | |
| 762 | /** |
| 763 | * aac_handle_aif - Handle a message from the firmware |
| 764 | * @dev: Which adapter this fib is from |
| 765 | * @fibptr: Pointer to fibptr from adapter |
| 766 | * |
| 767 | * This routine handles a driver notify fib from the adapter and |
| 768 | * dispatches it to the appropriate routine for handling. |
| 769 | */ |
| 770 | |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 771 | #define AIF_SNIFF_TIMEOUT (30*HZ) |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 772 | static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr) |
| 773 | { |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 774 | struct hw_fib * hw_fib = fibptr->hw_fib_va; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 775 | struct aac_aifcmd * aifcmd = (struct aac_aifcmd *)hw_fib->data; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 776 | u32 container; |
| 777 | struct scsi_device *device; |
| 778 | enum { |
| 779 | NOTHING, |
| 780 | DELETE, |
| 781 | ADD, |
| 782 | CHANGE |
| 783 | } device_config_needed; |
| 784 | |
| 785 | /* Sniff for container changes */ |
| 786 | |
Mark Haverkamp | c8f7b07 | 2006-08-03 08:02:24 -0700 | [diff] [blame] | 787 | if (!dev || !dev->fsa_dev) |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 788 | return; |
| 789 | container = (u32)-1; |
| 790 | |
| 791 | /* |
| 792 | * We have set this up to try and minimize the number of |
| 793 | * re-configures that take place. As a result of this when |
| 794 | * certain AIF's come in we will set a flag waiting for another |
| 795 | * type of AIF before setting the re-config flag. |
| 796 | */ |
| 797 | switch (le32_to_cpu(aifcmd->command)) { |
| 798 | case AifCmdDriverNotify: |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 799 | switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) { |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 800 | /* |
| 801 | * Morph or Expand complete |
| 802 | */ |
| 803 | case AifDenMorphComplete: |
| 804 | case AifDenVolumeExtendComplete: |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 805 | container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 806 | if (container >= dev->maximum_num_containers) |
| 807 | break; |
| 808 | |
| 809 | /* |
Christoph Hellwig | f64a181 | 2005-10-31 18:32:08 +0100 | [diff] [blame] | 810 | * Find the scsi_device associated with the SCSI |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 811 | * address. Make sure we have the right array, and if |
| 812 | * so set the flag to initiate a new re-config once we |
| 813 | * see an AifEnConfigChange AIF come through. |
| 814 | */ |
| 815 | |
| 816 | if ((dev != NULL) && (dev->scsi_host_ptr != NULL)) { |
| 817 | device = scsi_device_lookup(dev->scsi_host_ptr, |
| 818 | CONTAINER_TO_CHANNEL(container), |
| 819 | CONTAINER_TO_ID(container), |
| 820 | CONTAINER_TO_LUN(container)); |
| 821 | if (device) { |
| 822 | dev->fsa_dev[container].config_needed = CHANGE; |
| 823 | dev->fsa_dev[container].config_waiting_on = AifEnConfigChange; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 824 | dev->fsa_dev[container].config_waiting_stamp = jiffies; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 825 | scsi_device_put(device); |
| 826 | } |
| 827 | } |
| 828 | } |
| 829 | |
| 830 | /* |
| 831 | * If we are waiting on something and this happens to be |
| 832 | * that thing then set the re-configure flag. |
| 833 | */ |
| 834 | if (container != (u32)-1) { |
| 835 | if (container >= dev->maximum_num_containers) |
| 836 | break; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 837 | if ((dev->fsa_dev[container].config_waiting_on == |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 838 | le32_to_cpu(*(__le32 *)aifcmd->data)) && |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 839 | 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] | 840 | dev->fsa_dev[container].config_waiting_on = 0; |
| 841 | } else for (container = 0; |
| 842 | container < dev->maximum_num_containers; ++container) { |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 843 | if ((dev->fsa_dev[container].config_waiting_on == |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 844 | le32_to_cpu(*(__le32 *)aifcmd->data)) && |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 845 | 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] | 846 | dev->fsa_dev[container].config_waiting_on = 0; |
| 847 | } |
| 848 | break; |
| 849 | |
| 850 | case AifCmdEventNotify: |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 851 | switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) { |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 852 | /* |
| 853 | * Add an Array. |
| 854 | */ |
| 855 | case AifEnAddContainer: |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 856 | container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 857 | if (container >= dev->maximum_num_containers) |
| 858 | break; |
| 859 | dev->fsa_dev[container].config_needed = ADD; |
| 860 | dev->fsa_dev[container].config_waiting_on = |
| 861 | AifEnConfigChange; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 862 | dev->fsa_dev[container].config_waiting_stamp = jiffies; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 863 | break; |
| 864 | |
| 865 | /* |
| 866 | * Delete an Array. |
| 867 | */ |
| 868 | case AifEnDeleteContainer: |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 869 | container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 870 | if (container >= dev->maximum_num_containers) |
| 871 | break; |
| 872 | dev->fsa_dev[container].config_needed = DELETE; |
| 873 | dev->fsa_dev[container].config_waiting_on = |
| 874 | AifEnConfigChange; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 875 | dev->fsa_dev[container].config_waiting_stamp = jiffies; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 876 | break; |
| 877 | |
| 878 | /* |
| 879 | * Container change detected. If we currently are not |
| 880 | * waiting on something else, setup to wait on a Config Change. |
| 881 | */ |
| 882 | case AifEnContainerChange: |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 883 | container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 884 | if (container >= dev->maximum_num_containers) |
| 885 | break; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 886 | if (dev->fsa_dev[container].config_waiting_on && |
| 887 | 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] | 888 | break; |
| 889 | dev->fsa_dev[container].config_needed = CHANGE; |
| 890 | dev->fsa_dev[container].config_waiting_on = |
| 891 | AifEnConfigChange; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 892 | dev->fsa_dev[container].config_waiting_stamp = jiffies; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 893 | break; |
| 894 | |
| 895 | case AifEnConfigChange: |
| 896 | break; |
| 897 | |
| 898 | } |
| 899 | |
| 900 | /* |
| 901 | * If we are waiting on something and this happens to be |
| 902 | * that thing then set the re-configure flag. |
| 903 | */ |
| 904 | if (container != (u32)-1) { |
| 905 | if (container >= dev->maximum_num_containers) |
| 906 | break; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 907 | if ((dev->fsa_dev[container].config_waiting_on == |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 908 | le32_to_cpu(*(__le32 *)aifcmd->data)) && |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 909 | 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] | 910 | dev->fsa_dev[container].config_waiting_on = 0; |
| 911 | } else for (container = 0; |
| 912 | container < dev->maximum_num_containers; ++container) { |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 913 | if ((dev->fsa_dev[container].config_waiting_on == |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 914 | le32_to_cpu(*(__le32 *)aifcmd->data)) && |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 915 | 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] | 916 | dev->fsa_dev[container].config_waiting_on = 0; |
| 917 | } |
| 918 | break; |
| 919 | |
| 920 | case AifCmdJobProgress: |
| 921 | /* |
| 922 | * These are job progress AIF's. When a Clear is being |
| 923 | * done on a container it is initially created then hidden from |
| 924 | * the OS. When the clear completes we don't get a config |
| 925 | * change so we monitor the job status complete on a clear then |
| 926 | * wait for a container change. |
| 927 | */ |
| 928 | |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 929 | if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) && |
| 930 | (((__le32 *)aifcmd->data)[6] == ((__le32 *)aifcmd->data)[5] || |
| 931 | ((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsSuccess))) { |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 932 | for (container = 0; |
| 933 | container < dev->maximum_num_containers; |
| 934 | ++container) { |
| 935 | /* |
| 936 | * Stomp on all config sequencing for all |
| 937 | * containers? |
| 938 | */ |
| 939 | dev->fsa_dev[container].config_waiting_on = |
| 940 | AifEnContainerChange; |
| 941 | dev->fsa_dev[container].config_needed = ADD; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 942 | dev->fsa_dev[container].config_waiting_stamp = |
| 943 | jiffies; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 944 | } |
| 945 | } |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 946 | if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) && |
| 947 | ((__le32 *)aifcmd->data)[6] == 0 && |
| 948 | ((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsRunning)) { |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 949 | for (container = 0; |
| 950 | container < dev->maximum_num_containers; |
| 951 | ++container) { |
| 952 | /* |
| 953 | * Stomp on all config sequencing for all |
| 954 | * containers? |
| 955 | */ |
| 956 | dev->fsa_dev[container].config_waiting_on = |
| 957 | AifEnContainerChange; |
| 958 | dev->fsa_dev[container].config_needed = DELETE; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 959 | dev->fsa_dev[container].config_waiting_stamp = |
| 960 | jiffies; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 961 | } |
| 962 | } |
| 963 | break; |
| 964 | } |
| 965 | |
| 966 | device_config_needed = NOTHING; |
| 967 | for (container = 0; container < dev->maximum_num_containers; |
| 968 | ++container) { |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 969 | if ((dev->fsa_dev[container].config_waiting_on == 0) && |
| 970 | (dev->fsa_dev[container].config_needed != NOTHING) && |
| 971 | 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] | 972 | device_config_needed = |
| 973 | dev->fsa_dev[container].config_needed; |
| 974 | dev->fsa_dev[container].config_needed = NOTHING; |
| 975 | break; |
| 976 | } |
| 977 | } |
| 978 | if (device_config_needed == NOTHING) |
| 979 | return; |
| 980 | |
| 981 | /* |
| 982 | * If we decided that a re-configuration needs to be done, |
| 983 | * schedule it here on the way out the door, please close the door |
| 984 | * behind you. |
| 985 | */ |
| 986 | |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 987 | /* |
Christoph Hellwig | f64a181 | 2005-10-31 18:32:08 +0100 | [diff] [blame] | 988 | * Find the scsi_device associated with the SCSI address, |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 989 | * and mark it as changed, invalidating the cache. This deals |
| 990 | * with changes to existing device IDs. |
| 991 | */ |
| 992 | |
| 993 | if (!dev || !dev->scsi_host_ptr) |
| 994 | return; |
| 995 | /* |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 996 | * force reload of disk info via aac_probe_container |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 997 | */ |
| 998 | if ((device_config_needed == CHANGE) |
| 999 | && (dev->fsa_dev[container].valid == 1)) |
| 1000 | dev->fsa_dev[container].valid = 2; |
| 1001 | if ((device_config_needed == CHANGE) || |
| 1002 | (device_config_needed == ADD)) |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 1003 | aac_probe_container(dev, container); |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1004 | device = scsi_device_lookup(dev->scsi_host_ptr, |
| 1005 | CONTAINER_TO_CHANNEL(container), |
| 1006 | CONTAINER_TO_ID(container), |
| 1007 | CONTAINER_TO_LUN(container)); |
| 1008 | if (device) { |
| 1009 | switch (device_config_needed) { |
| 1010 | case DELETE: |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1011 | case CHANGE: |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1012 | scsi_rescan_device(&device->sdev_gendev); |
| 1013 | |
| 1014 | default: |
| 1015 | break; |
| 1016 | } |
| 1017 | scsi_device_put(device); |
| 1018 | } |
| 1019 | if (device_config_needed == ADD) { |
| 1020 | scsi_add_device(dev->scsi_host_ptr, |
| 1021 | CONTAINER_TO_CHANNEL(container), |
| 1022 | CONTAINER_TO_ID(container), |
| 1023 | CONTAINER_TO_LUN(container)); |
| 1024 | } |
| 1025 | |
| 1026 | } |
| 1027 | |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1028 | static int _aac_reset_adapter(struct aac_dev *aac, int forced) |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1029 | { |
| 1030 | int index, quirks; |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1031 | int retval; |
| 1032 | struct Scsi_Host *host; |
| 1033 | struct scsi_device *dev; |
| 1034 | struct scsi_cmnd *command; |
| 1035 | struct scsi_cmnd *command_list; |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1036 | int jafo = 0; |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1037 | |
| 1038 | /* |
| 1039 | * Assumptions: |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1040 | * - host is locked, unless called by the aacraid thread. |
| 1041 | * (a matter of convenience, due to legacy issues surrounding |
| 1042 | * eh_host_adapter_reset). |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1043 | * - in_reset is asserted, so no new i/o is getting to the |
| 1044 | * card. |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1045 | * - The card is dead, or will be very shortly ;-/ so no new |
| 1046 | * commands are completing in the interrupt service. |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1047 | */ |
| 1048 | host = aac->scsi_host_ptr; |
| 1049 | scsi_block_requests(host); |
| 1050 | aac_adapter_disable_int(aac); |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1051 | if (aac->thread->pid != current->pid) { |
| 1052 | spin_unlock_irq(host->host_lock); |
| 1053 | kthread_stop(aac->thread); |
| 1054 | jafo = 1; |
| 1055 | } |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1056 | |
| 1057 | /* |
| 1058 | * If a positive health, means in a known DEAD PANIC |
| 1059 | * state and the adapter could be reset to `try again'. |
| 1060 | */ |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1061 | retval = aac_adapter_restart(aac, forced ? 0 : aac_adapter_check_health(aac)); |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1062 | |
| 1063 | if (retval) |
| 1064 | goto out; |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1065 | |
Mark Haverkamp | d18b448 | 2006-11-21 10:40:31 -0800 | [diff] [blame] | 1066 | /* |
| 1067 | * Loop through the fibs, close the synchronous FIBS |
| 1068 | */ |
Mark Haverkamp | 33bb3b2 | 2007-03-15 10:27:21 -0700 | [diff] [blame] | 1069 | for (retval = 1, index = 0; index < (aac->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); index++) { |
Mark Haverkamp | d18b448 | 2006-11-21 10:40:31 -0800 | [diff] [blame] | 1070 | struct fib *fib = &aac->fibs[index]; |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 1071 | if (!(fib->hw_fib_va->header.XferState & cpu_to_le32(NoResponseExpected | Async)) && |
| 1072 | (fib->hw_fib_va->header.XferState & cpu_to_le32(ResponseExpected))) { |
Mark Haverkamp | d18b448 | 2006-11-21 10:40:31 -0800 | [diff] [blame] | 1073 | unsigned long flagv; |
| 1074 | spin_lock_irqsave(&fib->event_lock, flagv); |
| 1075 | up(&fib->event_wait); |
| 1076 | spin_unlock_irqrestore(&fib->event_lock, flagv); |
| 1077 | schedule(); |
Mark Haverkamp | 33bb3b2 | 2007-03-15 10:27:21 -0700 | [diff] [blame] | 1078 | retval = 0; |
Mark Haverkamp | d18b448 | 2006-11-21 10:40:31 -0800 | [diff] [blame] | 1079 | } |
| 1080 | } |
Mark Haverkamp | 33bb3b2 | 2007-03-15 10:27:21 -0700 | [diff] [blame] | 1081 | /* Give some extra time for ioctls to complete. */ |
| 1082 | if (retval == 0) |
| 1083 | ssleep(2); |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1084 | index = aac->cardtype; |
| 1085 | |
| 1086 | /* |
| 1087 | * Re-initialize the adapter, first free resources, then carefully |
| 1088 | * apply the initialization sequence to come back again. Only risk |
| 1089 | * is a change in Firmware dropping cache, it is assumed the caller |
| 1090 | * will ensure that i/o is queisced and the card is flushed in that |
| 1091 | * case. |
| 1092 | */ |
| 1093 | aac_fib_map_free(aac); |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1094 | pci_free_consistent(aac->pdev, aac->comm_size, aac->comm_addr, aac->comm_phys); |
| 1095 | aac->comm_addr = NULL; |
| 1096 | aac->comm_phys = 0; |
| 1097 | kfree(aac->queues); |
| 1098 | aac->queues = NULL; |
| 1099 | free_irq(aac->pdev->irq, aac); |
| 1100 | kfree(aac->fsa_dev); |
| 1101 | aac->fsa_dev = NULL; |
Salyzyn, Mark | 94cf6ba | 2007-12-13 16:14:18 -0800 | [diff] [blame^] | 1102 | quirks = aac_get_driver_ident(index)->quirks; |
| 1103 | if (quirks & AAC_QUIRK_31BIT) { |
Salyzyn, Mark | 9ad5204 | 2007-07-17 11:15:08 -0400 | [diff] [blame] | 1104 | if (((retval = pci_set_dma_mask(aac->pdev, DMA_31BIT_MASK))) || |
| 1105 | ((retval = pci_set_consistent_dma_mask(aac->pdev, DMA_31BIT_MASK)))) |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1106 | goto out; |
| 1107 | } else { |
Salyzyn, Mark | 9ad5204 | 2007-07-17 11:15:08 -0400 | [diff] [blame] | 1108 | if (((retval = pci_set_dma_mask(aac->pdev, DMA_32BIT_MASK))) || |
| 1109 | ((retval = pci_set_consistent_dma_mask(aac->pdev, DMA_32BIT_MASK)))) |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1110 | goto out; |
| 1111 | } |
| 1112 | if ((retval = (*(aac_get_driver_ident(index)->init))(aac))) |
| 1113 | goto out; |
Salyzyn, Mark | 94cf6ba | 2007-12-13 16:14:18 -0800 | [diff] [blame^] | 1114 | if (quirks & AAC_QUIRK_31BIT) |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1115 | if ((retval = pci_set_dma_mask(aac->pdev, DMA_32BIT_MASK))) |
| 1116 | goto out; |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1117 | if (jafo) { |
| 1118 | aac->thread = kthread_run(aac_command_thread, aac, aac->name); |
| 1119 | if (IS_ERR(aac->thread)) { |
| 1120 | retval = PTR_ERR(aac->thread); |
| 1121 | goto out; |
| 1122 | } |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1123 | } |
| 1124 | (void)aac_get_adapter_info(aac); |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1125 | if ((quirks & AAC_QUIRK_34SG) && (host->sg_tablesize > 34)) { |
| 1126 | host->sg_tablesize = 34; |
| 1127 | host->max_sectors = (host->sg_tablesize * 8) + 112; |
| 1128 | } |
| 1129 | if ((quirks & AAC_QUIRK_17SG) && (host->sg_tablesize > 17)) { |
| 1130 | host->sg_tablesize = 17; |
| 1131 | host->max_sectors = (host->sg_tablesize * 8) + 112; |
| 1132 | } |
| 1133 | aac_get_config_status(aac, 1); |
| 1134 | aac_get_containers(aac); |
| 1135 | /* |
| 1136 | * This is where the assumption that the Adapter is quiesced |
| 1137 | * is important. |
| 1138 | */ |
| 1139 | command_list = NULL; |
| 1140 | __shost_for_each_device(dev, host) { |
| 1141 | unsigned long flags; |
| 1142 | spin_lock_irqsave(&dev->list_lock, flags); |
| 1143 | list_for_each_entry(command, &dev->cmd_list, list) |
| 1144 | if (command->SCp.phase == AAC_OWNER_FIRMWARE) { |
| 1145 | command->SCp.buffer = (struct scatterlist *)command_list; |
| 1146 | command_list = command; |
| 1147 | } |
| 1148 | spin_unlock_irqrestore(&dev->list_lock, flags); |
| 1149 | } |
| 1150 | while ((command = command_list)) { |
| 1151 | command_list = (struct scsi_cmnd *)command->SCp.buffer; |
| 1152 | command->SCp.buffer = NULL; |
| 1153 | command->result = DID_OK << 16 |
| 1154 | | COMMAND_COMPLETE << 8 |
| 1155 | | SAM_STAT_TASK_SET_FULL; |
| 1156 | command->SCp.phase = AAC_OWNER_ERROR_HANDLER; |
| 1157 | command->scsi_done(command); |
| 1158 | } |
| 1159 | retval = 0; |
| 1160 | |
| 1161 | out: |
| 1162 | aac->in_reset = 0; |
| 1163 | scsi_unblock_requests(host); |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1164 | if (jafo) { |
| 1165 | spin_lock_irq(host->host_lock); |
| 1166 | } |
| 1167 | return retval; |
| 1168 | } |
| 1169 | |
| 1170 | int aac_reset_adapter(struct aac_dev * aac, int forced) |
| 1171 | { |
| 1172 | unsigned long flagv = 0; |
| 1173 | int retval; |
| 1174 | struct Scsi_Host * host; |
| 1175 | |
| 1176 | if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0) |
| 1177 | return -EBUSY; |
| 1178 | |
| 1179 | if (aac->in_reset) { |
| 1180 | spin_unlock_irqrestore(&aac->fib_lock, flagv); |
| 1181 | return -EBUSY; |
| 1182 | } |
| 1183 | aac->in_reset = 1; |
| 1184 | spin_unlock_irqrestore(&aac->fib_lock, flagv); |
| 1185 | |
| 1186 | /* |
| 1187 | * Wait for all commands to complete to this specific |
| 1188 | * target (block maximum 60 seconds). Although not necessary, |
| 1189 | * it does make us a good storage citizen. |
| 1190 | */ |
| 1191 | host = aac->scsi_host_ptr; |
| 1192 | scsi_block_requests(host); |
| 1193 | if (forced < 2) for (retval = 60; retval; --retval) { |
| 1194 | struct scsi_device * dev; |
| 1195 | struct scsi_cmnd * command; |
| 1196 | int active = 0; |
| 1197 | |
| 1198 | __shost_for_each_device(dev, host) { |
| 1199 | spin_lock_irqsave(&dev->list_lock, flagv); |
| 1200 | list_for_each_entry(command, &dev->cmd_list, list) { |
| 1201 | if (command->SCp.phase == AAC_OWNER_FIRMWARE) { |
| 1202 | active++; |
| 1203 | break; |
| 1204 | } |
| 1205 | } |
| 1206 | spin_unlock_irqrestore(&dev->list_lock, flagv); |
| 1207 | if (active) |
| 1208 | break; |
| 1209 | |
| 1210 | } |
| 1211 | /* |
| 1212 | * We can exit If all the commands are complete |
| 1213 | */ |
| 1214 | if (active == 0) |
| 1215 | break; |
| 1216 | ssleep(1); |
| 1217 | } |
| 1218 | |
| 1219 | /* Quiesce build, flush cache, write through mode */ |
Salyzyn, Mark | f858317 | 2007-10-30 15:50:49 -0400 | [diff] [blame] | 1220 | if (forced < 2) |
| 1221 | aac_send_shutdown(aac); |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1222 | spin_lock_irqsave(host->host_lock, flagv); |
Salyzyn, Mark | f858317 | 2007-10-30 15:50:49 -0400 | [diff] [blame] | 1223 | retval = _aac_reset_adapter(aac, forced ? forced : ((aac_check_reset != 0) && (aac_check_reset != 1))); |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1224 | spin_unlock_irqrestore(host->host_lock, flagv); |
| 1225 | |
Salyzyn, Mark | f858317 | 2007-10-30 15:50:49 -0400 | [diff] [blame] | 1226 | if ((forced < 2) && (retval == -ENODEV)) { |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1227 | /* Unwind aac_send_shutdown() IOP_RESET unsupported/disabled */ |
| 1228 | struct fib * fibctx = aac_fib_alloc(aac); |
| 1229 | if (fibctx) { |
| 1230 | struct aac_pause *cmd; |
| 1231 | int status; |
| 1232 | |
| 1233 | aac_fib_init(fibctx); |
| 1234 | |
| 1235 | cmd = (struct aac_pause *) fib_data(fibctx); |
| 1236 | |
| 1237 | cmd->command = cpu_to_le32(VM_ContainerConfig); |
| 1238 | cmd->type = cpu_to_le32(CT_PAUSE_IO); |
| 1239 | cmd->timeout = cpu_to_le32(1); |
| 1240 | cmd->min = cpu_to_le32(1); |
| 1241 | cmd->noRescan = cpu_to_le32(1); |
| 1242 | cmd->count = cpu_to_le32(0); |
| 1243 | |
| 1244 | status = aac_fib_send(ContainerCommand, |
| 1245 | fibctx, |
| 1246 | sizeof(struct aac_pause), |
| 1247 | FsaNormal, |
| 1248 | -2 /* Timeout silently */, 1, |
| 1249 | NULL, NULL); |
| 1250 | |
| 1251 | if (status >= 0) |
| 1252 | aac_fib_complete(fibctx); |
| 1253 | aac_fib_free(fibctx); |
| 1254 | } |
| 1255 | } |
| 1256 | |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1257 | return retval; |
| 1258 | } |
| 1259 | |
| 1260 | int aac_check_health(struct aac_dev * aac) |
| 1261 | { |
| 1262 | int BlinkLED; |
| 1263 | unsigned long time_now, flagv = 0; |
| 1264 | struct list_head * entry; |
| 1265 | struct Scsi_Host * host; |
| 1266 | |
| 1267 | /* Extending the scope of fib_lock slightly to protect aac->in_reset */ |
| 1268 | if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0) |
| 1269 | return 0; |
| 1270 | |
| 1271 | if (aac->in_reset || !(BlinkLED = aac_adapter_check_health(aac))) { |
| 1272 | spin_unlock_irqrestore(&aac->fib_lock, flagv); |
| 1273 | return 0; /* OK */ |
| 1274 | } |
| 1275 | |
| 1276 | aac->in_reset = 1; |
| 1277 | |
| 1278 | /* Fake up an AIF: |
| 1279 | * aac_aifcmd.command = AifCmdEventNotify = 1 |
| 1280 | * aac_aifcmd.seqnum = 0xFFFFFFFF |
| 1281 | * aac_aifcmd.data[0] = AifEnExpEvent = 23 |
| 1282 | * aac_aifcmd.data[1] = AifExeFirmwarePanic = 3 |
| 1283 | * aac.aifcmd.data[2] = AifHighPriority = 3 |
| 1284 | * aac.aifcmd.data[3] = BlinkLED |
| 1285 | */ |
| 1286 | |
| 1287 | time_now = jiffies/HZ; |
| 1288 | entry = aac->fib_list.next; |
| 1289 | |
| 1290 | /* |
| 1291 | * For each Context that is on the |
| 1292 | * fibctxList, make a copy of the |
| 1293 | * fib, and then set the event to wake up the |
| 1294 | * thread that is waiting for it. |
| 1295 | */ |
| 1296 | while (entry != &aac->fib_list) { |
| 1297 | /* |
| 1298 | * Extract the fibctx |
| 1299 | */ |
| 1300 | struct aac_fib_context *fibctx = list_entry(entry, struct aac_fib_context, next); |
| 1301 | struct hw_fib * hw_fib; |
| 1302 | struct fib * fib; |
| 1303 | /* |
| 1304 | * Check if the queue is getting |
| 1305 | * backlogged |
| 1306 | */ |
| 1307 | if (fibctx->count > 20) { |
| 1308 | /* |
| 1309 | * It's *not* jiffies folks, |
| 1310 | * but jiffies / HZ, so do not |
| 1311 | * panic ... |
| 1312 | */ |
| 1313 | u32 time_last = fibctx->jiffies; |
| 1314 | /* |
| 1315 | * Has it been > 2 minutes |
| 1316 | * since the last read off |
| 1317 | * the queue? |
| 1318 | */ |
| 1319 | if ((time_now - time_last) > aif_timeout) { |
| 1320 | entry = entry->next; |
| 1321 | aac_close_fib_context(aac, fibctx); |
| 1322 | continue; |
| 1323 | } |
| 1324 | } |
| 1325 | /* |
| 1326 | * Warning: no sleep allowed while |
| 1327 | * holding spinlock |
| 1328 | */ |
Salyzyn, Mark | 4dbc22d | 2007-04-16 11:21:50 -0400 | [diff] [blame] | 1329 | hw_fib = kzalloc(sizeof(struct hw_fib), GFP_ATOMIC); |
| 1330 | fib = kzalloc(sizeof(struct fib), GFP_ATOMIC); |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1331 | if (fib && hw_fib) { |
| 1332 | struct aac_aifcmd * aif; |
| 1333 | |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 1334 | fib->hw_fib_va = hw_fib; |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1335 | fib->dev = aac; |
| 1336 | aac_fib_init(fib); |
| 1337 | fib->type = FSAFS_NTC_FIB_CONTEXT; |
| 1338 | fib->size = sizeof (struct fib); |
| 1339 | fib->data = hw_fib->data; |
| 1340 | aif = (struct aac_aifcmd *)hw_fib->data; |
| 1341 | aif->command = cpu_to_le32(AifCmdEventNotify); |
| 1342 | aif->seqnum = cpu_to_le32(0xFFFFFFFF); |
Stephen Rothwell | 3b2d871 | 2007-11-01 17:32:21 +1100 | [diff] [blame] | 1343 | aif->data[0] = AifEnExpEvent; |
| 1344 | aif->data[1] = AifExeFirmwarePanic; |
| 1345 | aif->data[2] = AifHighPriority; |
Salyzyn, Mark | e609696 | 2007-11-07 10:58:12 -0500 | [diff] [blame] | 1346 | aif->data[3] = BlinkLED; |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1347 | |
| 1348 | /* |
| 1349 | * Put the FIB onto the |
| 1350 | * fibctx's fibs |
| 1351 | */ |
| 1352 | list_add_tail(&fib->fiblink, &fibctx->fib_list); |
| 1353 | fibctx->count++; |
| 1354 | /* |
| 1355 | * Set the event to wake up the |
| 1356 | * thread that will waiting. |
| 1357 | */ |
| 1358 | up(&fibctx->wait_sem); |
| 1359 | } else { |
| 1360 | printk(KERN_WARNING "aifd: didn't allocate NewFib.\n"); |
| 1361 | kfree(fib); |
| 1362 | kfree(hw_fib); |
| 1363 | } |
| 1364 | entry = entry->next; |
| 1365 | } |
| 1366 | |
| 1367 | spin_unlock_irqrestore(&aac->fib_lock, flagv); |
| 1368 | |
| 1369 | if (BlinkLED < 0) { |
| 1370 | printk(KERN_ERR "%s: Host adapter dead %d\n", aac->name, BlinkLED); |
| 1371 | goto out; |
| 1372 | } |
| 1373 | |
| 1374 | printk(KERN_ERR "%s: Host adapter BLINK LED 0x%x\n", aac->name, BlinkLED); |
| 1375 | |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 1376 | if (!aac_check_reset || |
| 1377 | ((aac_check_reset != 1) && |
| 1378 | (aac->supplement_adapter_info.SupportedOptions2 & |
| 1379 | cpu_to_le32(AAC_OPTION_IGNORE_RESET)))) |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1380 | goto out; |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1381 | host = aac->scsi_host_ptr; |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1382 | if (aac->thread->pid != current->pid) |
| 1383 | spin_lock_irqsave(host->host_lock, flagv); |
Salyzyn, Mark | f858317 | 2007-10-30 15:50:49 -0400 | [diff] [blame] | 1384 | BlinkLED = _aac_reset_adapter(aac, aac_check_reset != 1); |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1385 | if (aac->thread->pid != current->pid) |
| 1386 | spin_unlock_irqrestore(host->host_lock, flagv); |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1387 | return BlinkLED; |
| 1388 | |
| 1389 | out: |
| 1390 | aac->in_reset = 0; |
| 1391 | return BlinkLED; |
| 1392 | } |
| 1393 | |
| 1394 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1395 | /** |
| 1396 | * aac_command_thread - command processing thread |
| 1397 | * @dev: Adapter to monitor |
| 1398 | * |
| 1399 | * Waits on the commandready event in it's queue. When the event gets set |
| 1400 | * it will pull FIBs off it's queue. It will continue to pull FIBs off |
| 1401 | * until the queue is empty. When the queue is empty it will wait for |
| 1402 | * more FIBs. |
| 1403 | */ |
| 1404 | |
Christoph Hellwig | fe27381 | 2006-02-14 18:45:06 +0100 | [diff] [blame] | 1405 | int aac_command_thread(void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1406 | { |
Christoph Hellwig | fe27381 | 2006-02-14 18:45:06 +0100 | [diff] [blame] | 1407 | struct aac_dev *dev = data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1408 | struct hw_fib *hw_fib, *hw_newfib; |
| 1409 | struct fib *fib, *newfib; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1410 | struct aac_fib_context *fibctx; |
| 1411 | unsigned long flags; |
| 1412 | DECLARE_WAITQUEUE(wait, current); |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1413 | unsigned long next_jiffies = jiffies + HZ; |
| 1414 | unsigned long next_check_jiffies = next_jiffies; |
| 1415 | long difference = HZ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1416 | |
| 1417 | /* |
| 1418 | * We can only have one thread per adapter for AIF's. |
| 1419 | */ |
| 1420 | if (dev->aif_thread) |
| 1421 | return -EINVAL; |
Christoph Hellwig | fe27381 | 2006-02-14 18:45:06 +0100 | [diff] [blame] | 1422 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1423 | /* |
| 1424 | * Let the DPC know it has a place to send the AIF's to. |
| 1425 | */ |
| 1426 | dev->aif_thread = 1; |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1427 | add_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1428 | set_current_state(TASK_INTERRUPTIBLE); |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1429 | dprintk ((KERN_INFO "aac_command_thread start\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1430 | while(1) |
| 1431 | { |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1432 | spin_lock_irqsave(dev->queues->queue[HostNormCmdQueue].lock, flags); |
| 1433 | while(!list_empty(&(dev->queues->queue[HostNormCmdQueue].cmdq))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1434 | struct list_head *entry; |
| 1435 | struct aac_aifcmd * aifcmd; |
| 1436 | |
| 1437 | set_current_state(TASK_RUNNING); |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1438 | |
| 1439 | entry = dev->queues->queue[HostNormCmdQueue].cmdq.next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1440 | list_del(entry); |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1441 | |
| 1442 | spin_unlock_irqrestore(dev->queues->queue[HostNormCmdQueue].lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1443 | fib = list_entry(entry, struct fib, fiblink); |
| 1444 | /* |
| 1445 | * We will process the FIB here or pass it to a |
| 1446 | * worker thread that is TBD. We Really can't |
| 1447 | * do anything at this point since we don't have |
| 1448 | * anything defined for this thread to do. |
| 1449 | */ |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 1450 | hw_fib = fib->hw_fib_va; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1451 | memset(fib, 0, sizeof(struct fib)); |
| 1452 | fib->type = FSAFS_NTC_FIB_CONTEXT; |
| 1453 | fib->size = sizeof( struct fib ); |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 1454 | fib->hw_fib_va = hw_fib; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1455 | fib->data = hw_fib->data; |
| 1456 | fib->dev = dev; |
| 1457 | /* |
| 1458 | * We only handle AifRequest fibs from the adapter. |
| 1459 | */ |
| 1460 | aifcmd = (struct aac_aifcmd *) hw_fib->data; |
| 1461 | if (aifcmd->command == cpu_to_le32(AifCmdDriverNotify)) { |
| 1462 | /* Handle Driver Notify Events */ |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1463 | aac_handle_aif(dev, fib); |
Mark Haverkamp | 56b5871 | 2005-04-27 06:05:51 -0700 | [diff] [blame] | 1464 | *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK); |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 1465 | aac_fib_adapter_complete(fib, (u16)sizeof(u32)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1466 | } else { |
| 1467 | struct list_head *entry; |
| 1468 | /* The u32 here is important and intended. We are using |
| 1469 | 32bit wrapping time to fit the adapter field */ |
| 1470 | |
| 1471 | u32 time_now, time_last; |
| 1472 | unsigned long flagv; |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1473 | unsigned num; |
| 1474 | struct hw_fib ** hw_fib_pool, ** hw_fib_p; |
| 1475 | struct fib ** fib_pool, ** fib_p; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1476 | |
| 1477 | /* Sniff events */ |
| 1478 | if ((aifcmd->command == |
| 1479 | cpu_to_le32(AifCmdEventNotify)) || |
| 1480 | (aifcmd->command == |
| 1481 | cpu_to_le32(AifCmdJobProgress))) { |
| 1482 | aac_handle_aif(dev, fib); |
| 1483 | } |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1484 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1485 | time_now = jiffies/HZ; |
| 1486 | |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1487 | /* |
| 1488 | * Warning: no sleep allowed while |
| 1489 | * holding spinlock. We take the estimate |
| 1490 | * and pre-allocate a set of fibs outside the |
| 1491 | * lock. |
| 1492 | */ |
| 1493 | num = le32_to_cpu(dev->init->AdapterFibsSize) |
| 1494 | / sizeof(struct hw_fib); /* some extra */ |
| 1495 | spin_lock_irqsave(&dev->fib_lock, flagv); |
| 1496 | entry = dev->fib_list.next; |
| 1497 | while (entry != &dev->fib_list) { |
| 1498 | entry = entry->next; |
| 1499 | ++num; |
| 1500 | } |
| 1501 | spin_unlock_irqrestore(&dev->fib_lock, flagv); |
| 1502 | hw_fib_pool = NULL; |
| 1503 | fib_pool = NULL; |
| 1504 | if (num |
| 1505 | && ((hw_fib_pool = kmalloc(sizeof(struct hw_fib *) * num, GFP_KERNEL))) |
| 1506 | && ((fib_pool = kmalloc(sizeof(struct fib *) * num, GFP_KERNEL)))) { |
| 1507 | hw_fib_p = hw_fib_pool; |
| 1508 | fib_p = fib_pool; |
| 1509 | while (hw_fib_p < &hw_fib_pool[num]) { |
| 1510 | if (!(*(hw_fib_p++) = kmalloc(sizeof(struct hw_fib), GFP_KERNEL))) { |
| 1511 | --hw_fib_p; |
| 1512 | break; |
| 1513 | } |
| 1514 | if (!(*(fib_p++) = kmalloc(sizeof(struct fib), GFP_KERNEL))) { |
| 1515 | kfree(*(--hw_fib_p)); |
| 1516 | break; |
| 1517 | } |
| 1518 | } |
| 1519 | if ((num = hw_fib_p - hw_fib_pool) == 0) { |
| 1520 | kfree(fib_pool); |
| 1521 | fib_pool = NULL; |
| 1522 | kfree(hw_fib_pool); |
| 1523 | hw_fib_pool = NULL; |
| 1524 | } |
Jesper Juhl | c9475cb | 2005-11-07 01:01:26 -0800 | [diff] [blame] | 1525 | } else { |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1526 | kfree(hw_fib_pool); |
| 1527 | hw_fib_pool = NULL; |
| 1528 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1529 | spin_lock_irqsave(&dev->fib_lock, flagv); |
| 1530 | entry = dev->fib_list.next; |
| 1531 | /* |
| 1532 | * For each Context that is on the |
| 1533 | * fibctxList, make a copy of the |
| 1534 | * fib, and then set the event to wake up the |
| 1535 | * thread that is waiting for it. |
| 1536 | */ |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1537 | hw_fib_p = hw_fib_pool; |
| 1538 | fib_p = fib_pool; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1539 | while (entry != &dev->fib_list) { |
| 1540 | /* |
| 1541 | * Extract the fibctx |
| 1542 | */ |
| 1543 | fibctx = list_entry(entry, struct aac_fib_context, next); |
| 1544 | /* |
| 1545 | * Check if the queue is getting |
| 1546 | * backlogged |
| 1547 | */ |
| 1548 | if (fibctx->count > 20) |
| 1549 | { |
| 1550 | /* |
| 1551 | * It's *not* jiffies folks, |
| 1552 | * but jiffies / HZ so do not |
| 1553 | * panic ... |
| 1554 | */ |
| 1555 | time_last = fibctx->jiffies; |
| 1556 | /* |
| 1557 | * Has it been > 2 minutes |
| 1558 | * since the last read off |
| 1559 | * the queue? |
| 1560 | */ |
Mark Haverkamp | 404d9a9 | 2006-05-10 09:12:48 -0700 | [diff] [blame] | 1561 | if ((time_now - time_last) > aif_timeout) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | entry = entry->next; |
| 1563 | aac_close_fib_context(dev, fibctx); |
| 1564 | continue; |
| 1565 | } |
| 1566 | } |
| 1567 | /* |
| 1568 | * Warning: no sleep allowed while |
| 1569 | * holding spinlock |
| 1570 | */ |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1571 | if (hw_fib_p < &hw_fib_pool[num]) { |
| 1572 | hw_newfib = *hw_fib_p; |
| 1573 | *(hw_fib_p++) = NULL; |
| 1574 | newfib = *fib_p; |
| 1575 | *(fib_p++) = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1576 | /* |
| 1577 | * Make the copy of the FIB |
| 1578 | */ |
| 1579 | memcpy(hw_newfib, hw_fib, sizeof(struct hw_fib)); |
| 1580 | memcpy(newfib, fib, sizeof(struct fib)); |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 1581 | newfib->hw_fib_va = hw_newfib; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1582 | /* |
| 1583 | * Put the FIB onto the |
| 1584 | * fibctx's fibs |
| 1585 | */ |
| 1586 | list_add_tail(&newfib->fiblink, &fibctx->fib_list); |
| 1587 | fibctx->count++; |
| 1588 | /* |
| 1589 | * Set the event to wake up the |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1590 | * thread that is waiting. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1591 | */ |
| 1592 | up(&fibctx->wait_sem); |
| 1593 | } else { |
| 1594 | printk(KERN_WARNING "aifd: didn't allocate NewFib.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1595 | } |
| 1596 | entry = entry->next; |
| 1597 | } |
| 1598 | /* |
| 1599 | * Set the status of this FIB |
| 1600 | */ |
Mark Haverkamp | 56b5871 | 2005-04-27 06:05:51 -0700 | [diff] [blame] | 1601 | *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK); |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 1602 | aac_fib_adapter_complete(fib, sizeof(u32)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1603 | spin_unlock_irqrestore(&dev->fib_lock, flagv); |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1604 | /* Free up the remaining resources */ |
| 1605 | hw_fib_p = hw_fib_pool; |
| 1606 | fib_p = fib_pool; |
| 1607 | while (hw_fib_p < &hw_fib_pool[num]) { |
Jesper Juhl | c9475cb | 2005-11-07 01:01:26 -0800 | [diff] [blame] | 1608 | kfree(*hw_fib_p); |
| 1609 | kfree(*fib_p); |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1610 | ++fib_p; |
| 1611 | ++hw_fib_p; |
| 1612 | } |
Jesper Juhl | c9475cb | 2005-11-07 01:01:26 -0800 | [diff] [blame] | 1613 | kfree(hw_fib_pool); |
| 1614 | kfree(fib_pool); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1615 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1616 | kfree(fib); |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1617 | spin_lock_irqsave(dev->queues->queue[HostNormCmdQueue].lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1618 | } |
| 1619 | /* |
| 1620 | * There are no more AIF's |
| 1621 | */ |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1622 | spin_unlock_irqrestore(dev->queues->queue[HostNormCmdQueue].lock, flags); |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1623 | |
| 1624 | /* |
| 1625 | * Background activity |
| 1626 | */ |
| 1627 | if ((time_before(next_check_jiffies,next_jiffies)) |
| 1628 | && ((difference = next_check_jiffies - jiffies) <= 0)) { |
| 1629 | next_check_jiffies = next_jiffies; |
| 1630 | if (aac_check_health(dev) == 0) { |
| 1631 | difference = ((long)(unsigned)check_interval) |
| 1632 | * HZ; |
| 1633 | next_check_jiffies = jiffies + difference; |
| 1634 | } else if (!dev->queues) |
| 1635 | break; |
| 1636 | } |
| 1637 | if (!time_before(next_check_jiffies,next_jiffies) |
| 1638 | && ((difference = next_jiffies - jiffies) <= 0)) { |
| 1639 | struct timeval now; |
| 1640 | int ret; |
| 1641 | |
| 1642 | /* Don't even try to talk to adapter if its sick */ |
| 1643 | ret = aac_check_health(dev); |
| 1644 | if (!ret && !dev->queues) |
| 1645 | break; |
| 1646 | next_check_jiffies = jiffies |
| 1647 | + ((long)(unsigned)check_interval) |
| 1648 | * HZ; |
| 1649 | do_gettimeofday(&now); |
| 1650 | |
| 1651 | /* Synchronize our watches */ |
| 1652 | if (((1000000 - (1000000 / HZ)) > now.tv_usec) |
| 1653 | && (now.tv_usec > (1000000 / HZ))) |
| 1654 | difference = (((1000000 - now.tv_usec) * HZ) |
| 1655 | + 500000) / 1000000; |
| 1656 | else if (ret == 0) { |
| 1657 | struct fib *fibptr; |
| 1658 | |
| 1659 | if ((fibptr = aac_fib_alloc(dev))) { |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 1660 | __le32 *info; |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1661 | |
| 1662 | aac_fib_init(fibptr); |
| 1663 | |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 1664 | info = (__le32 *) fib_data(fibptr); |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1665 | if (now.tv_usec > 500000) |
| 1666 | ++now.tv_sec; |
| 1667 | |
| 1668 | *info = cpu_to_le32(now.tv_sec); |
| 1669 | |
| 1670 | (void)aac_fib_send(SendHostTime, |
| 1671 | fibptr, |
| 1672 | sizeof(*info), |
| 1673 | FsaNormal, |
| 1674 | 1, 1, |
| 1675 | NULL, |
| 1676 | NULL); |
| 1677 | aac_fib_complete(fibptr); |
| 1678 | aac_fib_free(fibptr); |
| 1679 | } |
| 1680 | difference = (long)(unsigned)update_interval*HZ; |
| 1681 | } else { |
| 1682 | /* retry shortly */ |
| 1683 | difference = 10 * HZ; |
| 1684 | } |
| 1685 | next_jiffies = jiffies + difference; |
| 1686 | if (time_before(next_check_jiffies,next_jiffies)) |
| 1687 | difference = next_check_jiffies - jiffies; |
| 1688 | } |
| 1689 | if (difference <= 0) |
| 1690 | difference = 1; |
| 1691 | set_current_state(TASK_INTERRUPTIBLE); |
| 1692 | schedule_timeout(difference); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1693 | |
Christoph Hellwig | fe27381 | 2006-02-14 18:45:06 +0100 | [diff] [blame] | 1694 | if (kthread_should_stop()) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1695 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1696 | } |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1697 | if (dev->queues) |
| 1698 | remove_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1699 | dev->aif_thread = 0; |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1700 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1701 | } |