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 | */ |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 59 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 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 | */ |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 119 | for (i = 0, fibptr = &dev->fibs[i]; |
| 120 | i < (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); |
| 121 | i++, fibptr++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | { |
| 123 | fibptr->dev = dev; |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 124 | fibptr->hw_fib_va = hw_fib; |
| 125 | fibptr->data = (void *) fibptr->hw_fib_va->data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | fibptr->next = fibptr+1; /* Forward chain the fibs */ |
| 127 | init_MUTEX_LOCKED(&fibptr->event_wait); |
| 128 | spin_lock_init(&fibptr->event_lock); |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 129 | hw_fib->header.XferState = cpu_to_le32(0xffffffff); |
| 130 | hw_fib->header.SenderSize = cpu_to_le16(dev->max_fib_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | fibptr->hw_fib_pa = hw_fib_pa; |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 132 | 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] | 133 | hw_fib_pa = hw_fib_pa + dev->max_fib_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | } |
| 135 | /* |
| 136 | * Add the fib chain to the free list |
| 137 | */ |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 138 | 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] | 139 | /* |
| 140 | * Enable this to debug out of queue space |
| 141 | */ |
| 142 | dev->free_fib = &dev->fibs[0]; |
| 143 | return 0; |
| 144 | } |
| 145 | |
| 146 | /** |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 147 | * aac_fib_alloc - allocate a fib |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | * @dev: Adapter to allocate the fib for |
| 149 | * |
| 150 | * 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] | 151 | * return NULL. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | */ |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 153 | |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 154 | struct fib *aac_fib_alloc(struct aac_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | { |
| 156 | struct fib * fibptr; |
| 157 | unsigned long flags; |
| 158 | spin_lock_irqsave(&dev->fib_lock, flags); |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 159 | fibptr = dev->free_fib; |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 160 | if(!fibptr){ |
| 161 | spin_unlock_irqrestore(&dev->fib_lock, flags); |
| 162 | return fibptr; |
| 163 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | dev->free_fib = fibptr->next; |
| 165 | spin_unlock_irqrestore(&dev->fib_lock, flags); |
| 166 | /* |
| 167 | * Set the proper node type code and node byte size |
| 168 | */ |
| 169 | fibptr->type = FSAFS_NTC_FIB_CONTEXT; |
| 170 | fibptr->size = sizeof(struct fib); |
| 171 | /* |
| 172 | * Null out fields that depend on being zero at the start of |
| 173 | * each I/O |
| 174 | */ |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 175 | fibptr->hw_fib_va->header.XferState = 0; |
Salyzyn, Mark | b6ef70f | 2008-01-08 13:26:43 -0800 | [diff] [blame] | 176 | fibptr->flags = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | fibptr->callback = NULL; |
| 178 | fibptr->callback_data = NULL; |
| 179 | |
| 180 | return fibptr; |
| 181 | } |
| 182 | |
| 183 | /** |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 184 | * aac_fib_free - free a fib |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | * @fibptr: fib to free up |
| 186 | * |
| 187 | * Frees up a fib and places it on the appropriate queue |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | */ |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 189 | |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 190 | void aac_fib_free(struct fib *fibptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | { |
| 192 | unsigned long flags; |
| 193 | |
| 194 | spin_lock_irqsave(&fibptr->dev->fib_lock, flags); |
Mark Haverkamp | 03d4433 | 2007-03-15 10:27:45 -0700 | [diff] [blame] | 195 | if (unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | aac_config.fib_timeouts++; |
Mark Haverkamp | 03d4433 | 2007-03-15 10:27:45 -0700 | [diff] [blame] | 197 | if (fibptr->hw_fib_va->header.XferState != 0) { |
| 198 | printk(KERN_WARNING "aac_fib_free, XferState != 0, fibptr = 0x%p, XferState = 0x%x\n", |
| 199 | (void*)fibptr, |
| 200 | le32_to_cpu(fibptr->hw_fib_va->header.XferState)); |
| 201 | } |
| 202 | fibptr->next = fibptr->dev->free_fib; |
| 203 | fibptr->dev->free_fib = fibptr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | spin_unlock_irqrestore(&fibptr->dev->fib_lock, flags); |
| 205 | } |
| 206 | |
| 207 | /** |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 208 | * aac_fib_init - initialise a fib |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | * @fibptr: The fib to initialize |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 210 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | * Set up the generic fib fields ready for use |
| 212 | */ |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 213 | |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 214 | void aac_fib_init(struct fib *fibptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | { |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 216 | struct hw_fib *hw_fib = fibptr->hw_fib_va; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | |
| 218 | hw_fib->header.StructType = FIB_MAGIC; |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 219 | hw_fib->header.Size = cpu_to_le16(fibptr->dev->max_fib_size); |
| 220 | hw_fib->header.XferState = cpu_to_le32(HostOwned | FibInitialized | FibEmpty | FastResponseCapable); |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 221 | hw_fib->header.SenderFibAddress = 0; /* Filled in later if needed */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | hw_fib->header.ReceiverFibAddress = cpu_to_le32(fibptr->hw_fib_pa); |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 223 | hw_fib->header.SenderSize = cpu_to_le16(fibptr->dev->max_fib_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | } |
| 225 | |
| 226 | /** |
| 227 | * fib_deallocate - deallocate a fib |
| 228 | * @fibptr: fib to deallocate |
| 229 | * |
| 230 | * Will deallocate and return to the free pool the FIB pointed to by the |
| 231 | * caller. |
| 232 | */ |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 233 | |
Adrian Bunk | 4833869 | 2005-04-25 19:45:58 -0700 | [diff] [blame] | 234 | static void fib_dealloc(struct fib * fibptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | { |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 236 | struct hw_fib *hw_fib = fibptr->hw_fib_va; |
Eric Sesterhenn | 125e187 | 2006-06-23 02:06:06 -0700 | [diff] [blame] | 237 | BUG_ON(hw_fib->header.StructType != FIB_MAGIC); |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 238 | hw_fib->header.XferState = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | } |
| 240 | |
| 241 | /* |
| 242 | * Commuication primitives define and support the queuing method we use to |
| 243 | * support host to adapter commuication. All queue accesses happen through |
| 244 | * these routines and are the only routines which have a knowledge of the |
| 245 | * how these queues are implemented. |
| 246 | */ |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 247 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | /** |
| 249 | * aac_get_entry - get a queue entry |
| 250 | * @dev: Adapter |
| 251 | * @qid: Queue Number |
| 252 | * @entry: Entry return |
| 253 | * @index: Index return |
| 254 | * @nonotify: notification control |
| 255 | * |
| 256 | * With a priority the routine returns a queue entry if the queue has free entries. If the queue |
| 257 | * is full(no free entries) than no entry is returned and the function returns 0 otherwise 1 is |
| 258 | * returned. |
| 259 | */ |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 260 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | static int aac_get_entry (struct aac_dev * dev, u32 qid, struct aac_entry **entry, u32 * index, unsigned long *nonotify) |
| 262 | { |
| 263 | struct aac_queue * q; |
Mark Haverkamp | bed30de | 2005-08-03 15:38:51 -0700 | [diff] [blame] | 264 | unsigned long idx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | |
| 266 | /* |
| 267 | * All of the queues wrap when they reach the end, so we check |
| 268 | * to see if they have reached the end and if they have we just |
| 269 | * set the index back to zero. This is a wrap. You could or off |
| 270 | * the high bits in all updates but this is a bit faster I think. |
| 271 | */ |
| 272 | |
| 273 | q = &dev->queues->queue[qid]; |
Mark Haverkamp | bed30de | 2005-08-03 15:38:51 -0700 | [diff] [blame] | 274 | |
| 275 | idx = *index = le32_to_cpu(*(q->headers.producer)); |
| 276 | /* Interrupt Moderation, only interrupt for first two entries */ |
| 277 | if (idx != le32_to_cpu(*(q->headers.consumer))) { |
| 278 | if (--idx == 0) { |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 279 | if (qid == AdapNormCmdQueue) |
Mark Haverkamp | bed30de | 2005-08-03 15:38:51 -0700 | [diff] [blame] | 280 | idx = ADAP_NORM_CMD_ENTRIES; |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 281 | else |
Mark Haverkamp | bed30de | 2005-08-03 15:38:51 -0700 | [diff] [blame] | 282 | idx = ADAP_NORM_RESP_ENTRIES; |
| 283 | } |
| 284 | if (idx != le32_to_cpu(*(q->headers.consumer))) |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 285 | *nonotify = 1; |
Mark Haverkamp | bed30de | 2005-08-03 15:38:51 -0700 | [diff] [blame] | 286 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 288 | if (qid == AdapNormCmdQueue) { |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 289 | if (*index >= ADAP_NORM_CMD_ENTRIES) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | *index = 0; /* Wrap to front of the Producer Queue. */ |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 291 | } else { |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 292 | if (*index >= ADAP_NORM_RESP_ENTRIES) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | *index = 0; /* Wrap to front of the Producer Queue. */ |
| 294 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 296 | /* Queue is full */ |
| 297 | if ((*index + 1) == le32_to_cpu(*(q->headers.consumer))) { |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 298 | printk(KERN_WARNING "Queue %d full, %u outstanding.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | qid, q->numpending); |
| 300 | return 0; |
| 301 | } else { |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 302 | *entry = q->base + *index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | return 1; |
| 304 | } |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 305 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | |
| 307 | /** |
| 308 | * aac_queue_get - get the next free QE |
| 309 | * @dev: Adapter |
| 310 | * @index: Returned index |
| 311 | * @priority: Priority of fib |
| 312 | * @fib: Fib to associate with the queue entry |
| 313 | * @wait: Wait if queue full |
| 314 | * @fibptr: Driver fib object to go with fib |
| 315 | * @nonotify: Don't notify the adapter |
| 316 | * |
| 317 | * Gets the next free QE off the requested priorty adapter command |
| 318 | * queue and associates the Fib with the QE. The QE represented by |
| 319 | * index is ready to insert on the queue when this routine returns |
| 320 | * success. |
| 321 | */ |
| 322 | |
Mark Haverkamp | 2871332 | 2007-01-23 14:59:20 -0800 | [diff] [blame] | 323 | 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] | 324 | { |
| 325 | struct aac_entry * entry = NULL; |
| 326 | int map = 0; |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 327 | |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 328 | if (qid == AdapNormCmdQueue) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | /* if no entries wait for some if caller wants to */ |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 330 | while (!aac_get_entry(dev, qid, &entry, index, nonotify)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | printk(KERN_ERR "GetEntries failed\n"); |
| 332 | } |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 333 | /* |
| 334 | * Setup queue entry with a command, status and fib mapped |
| 335 | */ |
| 336 | entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size)); |
| 337 | map = 1; |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 338 | } else { |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 339 | while (!aac_get_entry(dev, qid, &entry, index, nonotify)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | /* if no entries wait for some if caller wants to */ |
| 341 | } |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 342 | /* |
| 343 | * Setup queue entry with command, status and fib mapped |
| 344 | */ |
| 345 | entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size)); |
| 346 | entry->addr = hw_fib->header.SenderFibAddress; |
| 347 | /* Restore adapters pointer to the FIB */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | hw_fib->header.ReceiverFibAddress = hw_fib->header.SenderFibAddress; /* Let the adapter now where to find its data */ |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 349 | map = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | } |
| 351 | /* |
| 352 | * If MapFib is true than we need to map the Fib and put pointers |
| 353 | * in the queue entry. |
| 354 | */ |
| 355 | if (map) |
| 356 | entry->addr = cpu_to_le32(fibptr->hw_fib_pa); |
| 357 | return 0; |
| 358 | } |
| 359 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | /* |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 361 | * Define the highest level of host to adapter communication routines. |
| 362 | * These routines will support host to adapter FS commuication. These |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | * routines have no knowledge of the commuication method used. This level |
| 364 | * sends and receives FIBs. This level has no knowledge of how these FIBs |
| 365 | * get passed back and forth. |
| 366 | */ |
| 367 | |
| 368 | /** |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 369 | * aac_fib_send - send a fib to the adapter |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | * @command: Command to send |
| 371 | * @fibptr: The fib |
| 372 | * @size: Size of fib data area |
| 373 | * @priority: Priority of Fib |
| 374 | * @wait: Async/sync select |
| 375 | * @reply: True if a reply is wanted |
| 376 | * @callback: Called with reply |
| 377 | * @callback_data: Passed to callback |
| 378 | * |
| 379 | * Sends the requested FIB to the adapter and optionally will wait for a |
| 380 | * response FIB. If the caller does not wish to wait for a response than |
| 381 | * an event to wait on must be supplied. This event will be set when a |
| 382 | * response FIB is received from the adapter. |
| 383 | */ |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 384 | |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 385 | int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size, |
| 386 | int priority, int wait, int reply, fib_callback callback, |
| 387 | void *callback_data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | struct aac_dev * dev = fibptr->dev; |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 390 | struct hw_fib * hw_fib = fibptr->hw_fib_va; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | unsigned long flags = 0; |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 392 | unsigned long qflags; |
| 393 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | if (!(hw_fib->header.XferState & cpu_to_le32(HostOwned))) |
| 395 | return -EBUSY; |
| 396 | /* |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 397 | * There are 5 cases with the wait and reponse requested flags. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | * The only invalid cases are if the caller requests to wait and |
| 399 | * does not request a response and if the caller does not want a |
| 400 | * response and the Fib is not allocated from pool. If a response |
| 401 | * is not requesed the Fib will just be deallocaed by the DPC |
| 402 | * routine when the response comes back from the adapter. No |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 403 | * further processing will be done besides deleting the Fib. We |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | * will have a debug mode where the adapter can notify the host |
| 405 | * it had a problem and the host can log that fact. |
| 406 | */ |
Salyzyn, Mark | b6ef70f | 2008-01-08 13:26:43 -0800 | [diff] [blame] | 407 | fibptr->flags = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | if (wait && !reply) { |
| 409 | return -EINVAL; |
| 410 | } else if (!wait && reply) { |
| 411 | hw_fib->header.XferState |= cpu_to_le32(Async | ResponseExpected); |
| 412 | FIB_COUNTER_INCREMENT(aac_config.AsyncSent); |
| 413 | } else if (!wait && !reply) { |
| 414 | hw_fib->header.XferState |= cpu_to_le32(NoResponseExpected); |
| 415 | FIB_COUNTER_INCREMENT(aac_config.NoResponseSent); |
| 416 | } else if (wait && reply) { |
| 417 | hw_fib->header.XferState |= cpu_to_le32(ResponseExpected); |
| 418 | FIB_COUNTER_INCREMENT(aac_config.NormalSent); |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 419 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | /* |
| 421 | * Map the fib into 32bits by using the fib number |
| 422 | */ |
| 423 | |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 424 | hw_fib->header.SenderFibAddress = cpu_to_le32(((u32)(fibptr - dev->fibs)) << 2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | hw_fib->header.SenderData = (u32)(fibptr - dev->fibs); |
| 426 | /* |
| 427 | * Set FIB state to indicate where it came from and if we want a |
| 428 | * response from the adapter. Also load the command from the |
| 429 | * caller. |
| 430 | * |
| 431 | * Map the hw fib pointer as a 32bit value |
| 432 | */ |
| 433 | hw_fib->header.Command = cpu_to_le16(command); |
| 434 | hw_fib->header.XferState |= cpu_to_le32(SentFromHost); |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 435 | 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] | 436 | /* |
| 437 | * Set the size of the Fib we want to send to the adapter |
| 438 | */ |
| 439 | hw_fib->header.Size = cpu_to_le16(sizeof(struct aac_fibhdr) + size); |
| 440 | if (le16_to_cpu(hw_fib->header.Size) > le16_to_cpu(hw_fib->header.SenderSize)) { |
| 441 | return -EMSGSIZE; |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 442 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | /* |
| 444 | * Get a queue entry connect the FIB to it and send an notify |
| 445 | * the adapter a command is ready. |
| 446 | */ |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 447 | hw_fib->header.XferState |= cpu_to_le32(NormalPriority); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | /* |
| 450 | * Fill in the Callback and CallbackContext if we are not |
| 451 | * going to wait. |
| 452 | */ |
| 453 | if (!wait) { |
| 454 | fibptr->callback = callback; |
| 455 | fibptr->callback_data = callback_data; |
Salyzyn, Mark | b6ef70f | 2008-01-08 13:26:43 -0800 | [diff] [blame] | 456 | fibptr->flags = FIB_CONTEXT_FLAG; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | |
| 459 | fibptr->done = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 461 | FIB_COUNTER_INCREMENT(aac_config.FibsSent); |
| 462 | |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 463 | dprintk((KERN_DEBUG "Fib contents:.\n")); |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 464 | dprintk((KERN_DEBUG " Command = %d.\n", le32_to_cpu(hw_fib->header.Command))); |
| 465 | dprintk((KERN_DEBUG " SubCommand = %d.\n", le32_to_cpu(((struct aac_query_mount *)fib_data(fibptr))->command))); |
| 466 | 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] | 467 | 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] | 468 | dprintk((KERN_DEBUG " hw_fib pa being sent=%lx\n",(ulong)fibptr->hw_fib_pa)); |
| 469 | dprintk((KERN_DEBUG " fib being sent=%p\n",fibptr)); |
| 470 | |
Mark Haverkamp | c8f7b07 | 2006-08-03 08:02:24 -0700 | [diff] [blame] | 471 | if (!dev->queues) |
Mark Haverkamp | 65101355 | 2006-09-19 08:59:23 -0700 | [diff] [blame] | 472 | return -EBUSY; |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 473 | |
| 474 | if(wait) |
| 475 | spin_lock_irqsave(&fibptr->event_lock, flags); |
Mark Haverkamp | 2871332 | 2007-01-23 14:59:20 -0800 | [diff] [blame] | 476 | aac_adapter_deliver(fibptr); |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 477 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | /* |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 479 | * If the caller wanted us to wait for response wait now. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | */ |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 481 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | if (wait) { |
| 483 | spin_unlock_irqrestore(&fibptr->event_lock, flags); |
Mark Haverkamp | 9203344 | 2005-09-20 12:56:50 -0700 | [diff] [blame] | 484 | /* Only set for first known interruptable command */ |
| 485 | if (wait < 0) { |
| 486 | /* |
| 487 | * *VERY* Dangerous to time out a command, the |
| 488 | * assumption is made that we have no hope of |
| 489 | * functioning because an interrupt routing or other |
| 490 | * hardware failure has occurred. |
| 491 | */ |
| 492 | unsigned long count = 36000000L; /* 3 minutes */ |
Mark Haverkamp | 9203344 | 2005-09-20 12:56:50 -0700 | [diff] [blame] | 493 | while (down_trylock(&fibptr->event_wait)) { |
Mark Haverkamp | 33524b7 | 2006-11-21 10:40:08 -0800 | [diff] [blame] | 494 | int blink; |
Mark Haverkamp | 9203344 | 2005-09-20 12:56:50 -0700 | [diff] [blame] | 495 | if (--count == 0) { |
Mark Haverkamp | 2871332 | 2007-01-23 14:59:20 -0800 | [diff] [blame] | 496 | struct aac_queue * q = &dev->queues->queue[AdapNormCmdQueue]; |
Mark Haverkamp | 9203344 | 2005-09-20 12:56:50 -0700 | [diff] [blame] | 497 | spin_lock_irqsave(q->lock, qflags); |
| 498 | q->numpending--; |
Mark Haverkamp | 9203344 | 2005-09-20 12:56:50 -0700 | [diff] [blame] | 499 | spin_unlock_irqrestore(q->lock, qflags); |
| 500 | if (wait == -1) { |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 501 | 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] | 502 | "Usually a result of a PCI interrupt routing problem;\n" |
| 503 | "update mother board BIOS or consider utilizing one of\n" |
| 504 | "the SAFE mode kernel options (acpi, apic etc)\n"); |
| 505 | } |
| 506 | return -ETIMEDOUT; |
| 507 | } |
Mark Haverkamp | 33524b7 | 2006-11-21 10:40:08 -0800 | [diff] [blame] | 508 | if ((blink = aac_adapter_check_health(dev)) > 0) { |
| 509 | if (wait == -1) { |
| 510 | printk(KERN_ERR "aacraid: aac_fib_send: adapter blinkLED 0x%x.\n" |
| 511 | "Usually a result of a serious unrecoverable hardware problem\n", |
| 512 | blink); |
| 513 | } |
| 514 | return -EFAULT; |
| 515 | } |
Mark Haverkamp | 9203344 | 2005-09-20 12:56:50 -0700 | [diff] [blame] | 516 | udelay(5); |
| 517 | } |
Mark Haverkamp | 33bb3b2 | 2007-03-15 10:27:21 -0700 | [diff] [blame] | 518 | } else |
| 519 | (void)down_interruptible(&fibptr->event_wait); |
| 520 | spin_lock_irqsave(&fibptr->event_lock, flags); |
| 521 | if (fibptr->done == 0) { |
| 522 | fibptr->done = 2; /* Tell interrupt we aborted */ |
Mark Haverkamp | c8f7b07 | 2006-08-03 08:02:24 -0700 | [diff] [blame] | 523 | spin_unlock_irqrestore(&fibptr->event_lock, flags); |
Mark Haverkamp | 33bb3b2 | 2007-03-15 10:27:21 -0700 | [diff] [blame] | 524 | return -EINTR; |
Mark Haverkamp | c8f7b07 | 2006-08-03 08:02:24 -0700 | [diff] [blame] | 525 | } |
Mark Haverkamp | 33bb3b2 | 2007-03-15 10:27:21 -0700 | [diff] [blame] | 526 | spin_unlock_irqrestore(&fibptr->event_lock, flags); |
Eric Sesterhenn | 125e187 | 2006-06-23 02:06:06 -0700 | [diff] [blame] | 527 | BUG_ON(fibptr->done == 0); |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 528 | |
Salyzyn, Mark | 912d4e8 | 2007-03-26 09:21:14 -0400 | [diff] [blame] | 529 | if(unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | return -ETIMEDOUT; |
Salyzyn, Mark | 912d4e8 | 2007-03-26 09:21:14 -0400 | [diff] [blame] | 531 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | } |
| 533 | /* |
| 534 | * If the user does not want a response than return success otherwise |
| 535 | * return pending |
| 536 | */ |
| 537 | if (reply) |
| 538 | return -EINPROGRESS; |
| 539 | else |
| 540 | return 0; |
| 541 | } |
| 542 | |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 543 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | * aac_consumer_get - get the top of the queue |
| 545 | * @dev: Adapter |
| 546 | * @q: Queue |
| 547 | * @entry: Return entry |
| 548 | * |
| 549 | * Will return a pointer to the entry on the top of the queue requested that |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 550 | * we are a consumer of, and return the address of the queue entry. It does |
| 551 | * not change the state of the queue. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | */ |
| 553 | |
| 554 | int aac_consumer_get(struct aac_dev * dev, struct aac_queue * q, struct aac_entry **entry) |
| 555 | { |
| 556 | u32 index; |
| 557 | int status; |
| 558 | if (le32_to_cpu(*q->headers.producer) == le32_to_cpu(*q->headers.consumer)) { |
| 559 | status = 0; |
| 560 | } else { |
| 561 | /* |
| 562 | * The consumer index must be wrapped if we have reached |
| 563 | * the end of the queue, else we just use the entry |
| 564 | * pointed to by the header index |
| 565 | */ |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 566 | if (le32_to_cpu(*q->headers.consumer) >= q->entries) |
| 567 | index = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | else |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 569 | index = le32_to_cpu(*q->headers.consumer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | *entry = q->base + index; |
| 571 | status = 1; |
| 572 | } |
| 573 | return(status); |
| 574 | } |
| 575 | |
| 576 | /** |
| 577 | * aac_consumer_free - free consumer entry |
| 578 | * @dev: Adapter |
| 579 | * @q: Queue |
| 580 | * @qid: Queue ident |
| 581 | * |
| 582 | * Frees up the current top of the queue we are a consumer of. If the |
| 583 | * queue was full notify the producer that the queue is no longer full. |
| 584 | */ |
| 585 | |
| 586 | void aac_consumer_free(struct aac_dev * dev, struct aac_queue *q, u32 qid) |
| 587 | { |
| 588 | int wasfull = 0; |
| 589 | u32 notify; |
| 590 | |
| 591 | if ((le32_to_cpu(*q->headers.producer)+1) == le32_to_cpu(*q->headers.consumer)) |
| 592 | wasfull = 1; |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 593 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | if (le32_to_cpu(*q->headers.consumer) >= q->entries) |
| 595 | *q->headers.consumer = cpu_to_le32(1); |
| 596 | else |
| 597 | *q->headers.consumer = cpu_to_le32(le32_to_cpu(*q->headers.consumer)+1); |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 598 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | if (wasfull) { |
| 600 | switch (qid) { |
| 601 | |
| 602 | case HostNormCmdQueue: |
| 603 | notify = HostNormCmdNotFull; |
| 604 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | case HostNormRespQueue: |
| 606 | notify = HostNormRespNotFull; |
| 607 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | default: |
| 609 | BUG(); |
| 610 | return; |
| 611 | } |
| 612 | aac_adapter_notify(dev, notify); |
| 613 | } |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 614 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | |
| 616 | /** |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 617 | * aac_fib_adapter_complete - complete adapter issued fib |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | * @fibptr: fib to complete |
| 619 | * @size: size of fib |
| 620 | * |
| 621 | * Will do all necessary work to complete a FIB that was sent from |
| 622 | * the adapter. |
| 623 | */ |
| 624 | |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 625 | int aac_fib_adapter_complete(struct fib *fibptr, unsigned short size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | { |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 627 | struct hw_fib * hw_fib = fibptr->hw_fib_va; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | struct aac_dev * dev = fibptr->dev; |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 629 | struct aac_queue * q; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | unsigned long nointr = 0; |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 631 | unsigned long qflags; |
| 632 | |
| 633 | if (hw_fib->header.XferState == 0) { |
Mark Haverkamp | 2871332 | 2007-01-23 14:59:20 -0800 | [diff] [blame] | 634 | if (dev->comm_interface == AAC_COMM_MESSAGE) |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 635 | kfree (hw_fib); |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 636 | return 0; |
Mark Haverkamp | 1640a2c | 2005-09-20 12:57:11 -0700 | [diff] [blame] | 637 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | /* |
| 639 | * If we plan to do anything check the structure type first. |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 640 | */ |
| 641 | if (hw_fib->header.StructType != FIB_MAGIC) { |
Mark Haverkamp | 2871332 | 2007-01-23 14:59:20 -0800 | [diff] [blame] | 642 | if (dev->comm_interface == AAC_COMM_MESSAGE) |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 643 | kfree (hw_fib); |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 644 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | } |
| 646 | /* |
| 647 | * This block handles the case where the adapter had sent us a |
| 648 | * command and we have finished processing the command. We |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 649 | * call completeFib when we are done processing the command |
| 650 | * and want to send a response back to the adapter. This will |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | * send the completed cdb to the adapter. |
| 652 | */ |
| 653 | if (hw_fib->header.XferState & cpu_to_le32(SentFromAdapter)) { |
Mark Haverkamp | 2871332 | 2007-01-23 14:59:20 -0800 | [diff] [blame] | 654 | if (dev->comm_interface == AAC_COMM_MESSAGE) { |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 655 | kfree (hw_fib); |
| 656 | } else { |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 657 | u32 index; |
| 658 | hw_fib->header.XferState |= cpu_to_le32(HostProcessed); |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 659 | if (size) { |
| 660 | size += sizeof(struct aac_fibhdr); |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 661 | if (size > le16_to_cpu(hw_fib->header.SenderSize)) |
Mark Haverkamp | 8e0c5eb | 2005-10-24 10:52:22 -0700 | [diff] [blame] | 662 | return -EMSGSIZE; |
| 663 | hw_fib->header.Size = cpu_to_le16(size); |
| 664 | } |
| 665 | q = &dev->queues->queue[AdapNormRespQueue]; |
| 666 | spin_lock_irqsave(q->lock, qflags); |
| 667 | aac_queue_get(dev, &index, AdapNormRespQueue, hw_fib, 1, NULL, &nointr); |
| 668 | *(q->headers.producer) = cpu_to_le32(index + 1); |
| 669 | spin_unlock_irqrestore(q->lock, qflags); |
| 670 | if (!(nointr & (int)aac_config.irq_mod)) |
| 671 | aac_adapter_notify(dev, AdapNormRespQueue); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | } |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 673 | } else { |
| 674 | printk(KERN_WARNING "aac_fib_adapter_complete: " |
| 675 | "Unknown xferstate detected.\n"); |
| 676 | BUG(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | return 0; |
| 679 | } |
| 680 | |
| 681 | /** |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 682 | * aac_fib_complete - fib completion handler |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | * @fib: FIB to complete |
| 684 | * |
| 685 | * Will do all necessary work to complete a FIB. |
| 686 | */ |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 687 | |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 688 | int aac_fib_complete(struct fib *fibptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | { |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 690 | struct hw_fib * hw_fib = fibptr->hw_fib_va; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | |
| 692 | /* |
| 693 | * Check for a fib which has already been completed |
| 694 | */ |
| 695 | |
| 696 | if (hw_fib->header.XferState == 0) |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 697 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | /* |
| 699 | * If we plan to do anything check the structure type first. |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 700 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | |
| 702 | if (hw_fib->header.StructType != FIB_MAGIC) |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 703 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | /* |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 705 | * This block completes a cdb which orginated on the host and we |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | * just need to deallocate the cdb or reinit it. At this point the |
| 707 | * command is complete that we had sent to the adapter and this |
| 708 | * cdb could be reused. |
| 709 | */ |
| 710 | if((hw_fib->header.XferState & cpu_to_le32(SentFromHost)) && |
| 711 | (hw_fib->header.XferState & cpu_to_le32(AdapterProcessed))) |
| 712 | { |
| 713 | fib_dealloc(fibptr); |
| 714 | } |
| 715 | else if(hw_fib->header.XferState & cpu_to_le32(SentFromHost)) |
| 716 | { |
| 717 | /* |
| 718 | * This handles the case when the host has aborted the I/O |
| 719 | * to the adapter because the adapter is not responding |
| 720 | */ |
| 721 | fib_dealloc(fibptr); |
| 722 | } else if(hw_fib->header.XferState & cpu_to_le32(HostOwned)) { |
| 723 | fib_dealloc(fibptr); |
| 724 | } else { |
| 725 | BUG(); |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 726 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | return 0; |
| 728 | } |
| 729 | |
| 730 | /** |
| 731 | * aac_printf - handle printf from firmware |
| 732 | * @dev: Adapter |
| 733 | * @val: Message info |
| 734 | * |
| 735 | * Print a message passed to us by the controller firmware on the |
| 736 | * Adaptec board |
| 737 | */ |
| 738 | |
| 739 | void aac_printf(struct aac_dev *dev, u32 val) |
| 740 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | char *cp = dev->printfbuf; |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 742 | if (dev->printf_enabled) |
| 743 | { |
| 744 | int length = val & 0xffff; |
| 745 | int level = (val >> 16) & 0xffff; |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 746 | |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 747 | /* |
| 748 | * The size of the printfbuf is set in port.c |
| 749 | * There is no variable or define for it |
| 750 | */ |
| 751 | if (length > 255) |
| 752 | length = 255; |
| 753 | if (cp[length] != 0) |
| 754 | cp[length] = 0; |
| 755 | if (level == LOG_AAC_HIGH_ERROR) |
Mark Haverkamp | 1241f35 | 2006-03-27 09:44:23 -0800 | [diff] [blame] | 756 | printk(KERN_WARNING "%s:%s", dev->name, cp); |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 757 | else |
Mark Haverkamp | 1241f35 | 2006-03-27 09:44:23 -0800 | [diff] [blame] | 758 | printk(KERN_INFO "%s:%s", dev->name, cp); |
Mark Haverkamp | 7c00ffa | 2005-05-16 18:28:42 -0700 | [diff] [blame] | 759 | } |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 760 | memset(cp, 0, 256); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | } |
| 762 | |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 763 | |
| 764 | /** |
| 765 | * aac_handle_aif - Handle a message from the firmware |
| 766 | * @dev: Which adapter this fib is from |
| 767 | * @fibptr: Pointer to fibptr from adapter |
| 768 | * |
| 769 | * This routine handles a driver notify fib from the adapter and |
| 770 | * dispatches it to the appropriate routine for handling. |
| 771 | */ |
| 772 | |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 773 | #define AIF_SNIFF_TIMEOUT (30*HZ) |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 774 | static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr) |
| 775 | { |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 776 | struct hw_fib * hw_fib = fibptr->hw_fib_va; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 777 | struct aac_aifcmd * aifcmd = (struct aac_aifcmd *)hw_fib->data; |
Salyzyn, Mark | 0995ad3 | 2008-01-11 11:56:07 -0800 | [diff] [blame] | 778 | u32 channel, id, lun, container; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 779 | struct scsi_device *device; |
| 780 | enum { |
| 781 | NOTHING, |
| 782 | DELETE, |
| 783 | ADD, |
| 784 | CHANGE |
Salyzyn, Mark | 0995ad3 | 2008-01-11 11:56:07 -0800 | [diff] [blame] | 785 | } device_config_needed = NOTHING; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 786 | |
| 787 | /* Sniff for container changes */ |
| 788 | |
Mark Haverkamp | c8f7b07 | 2006-08-03 08:02:24 -0700 | [diff] [blame] | 789 | if (!dev || !dev->fsa_dev) |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 790 | return; |
Salyzyn, Mark | 0995ad3 | 2008-01-11 11:56:07 -0800 | [diff] [blame] | 791 | container = channel = id = lun = (u32)-1; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 792 | |
| 793 | /* |
| 794 | * We have set this up to try and minimize the number of |
| 795 | * re-configures that take place. As a result of this when |
| 796 | * certain AIF's come in we will set a flag waiting for another |
| 797 | * type of AIF before setting the re-config flag. |
| 798 | */ |
| 799 | switch (le32_to_cpu(aifcmd->command)) { |
| 800 | case AifCmdDriverNotify: |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 801 | switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) { |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 802 | /* |
| 803 | * Morph or Expand complete |
| 804 | */ |
| 805 | case AifDenMorphComplete: |
| 806 | case AifDenVolumeExtendComplete: |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 807 | container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 808 | if (container >= dev->maximum_num_containers) |
| 809 | break; |
| 810 | |
| 811 | /* |
Christoph Hellwig | f64a181 | 2005-10-31 18:32:08 +0100 | [diff] [blame] | 812 | * Find the scsi_device associated with the SCSI |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 813 | * address. Make sure we have the right array, and if |
| 814 | * so set the flag to initiate a new re-config once we |
| 815 | * see an AifEnConfigChange AIF come through. |
| 816 | */ |
| 817 | |
| 818 | if ((dev != NULL) && (dev->scsi_host_ptr != NULL)) { |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 819 | device = scsi_device_lookup(dev->scsi_host_ptr, |
| 820 | CONTAINER_TO_CHANNEL(container), |
| 821 | CONTAINER_TO_ID(container), |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 822 | CONTAINER_TO_LUN(container)); |
| 823 | if (device) { |
| 824 | dev->fsa_dev[container].config_needed = CHANGE; |
| 825 | dev->fsa_dev[container].config_waiting_on = AifEnConfigChange; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 826 | dev->fsa_dev[container].config_waiting_stamp = jiffies; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 827 | scsi_device_put(device); |
| 828 | } |
| 829 | } |
| 830 | } |
| 831 | |
| 832 | /* |
| 833 | * If we are waiting on something and this happens to be |
| 834 | * that thing then set the re-configure flag. |
| 835 | */ |
| 836 | if (container != (u32)-1) { |
| 837 | if (container >= dev->maximum_num_containers) |
| 838 | break; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 839 | if ((dev->fsa_dev[container].config_waiting_on == |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 840 | le32_to_cpu(*(__le32 *)aifcmd->data)) && |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 841 | 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] | 842 | dev->fsa_dev[container].config_waiting_on = 0; |
| 843 | } else for (container = 0; |
| 844 | container < dev->maximum_num_containers; ++container) { |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 845 | if ((dev->fsa_dev[container].config_waiting_on == |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 846 | le32_to_cpu(*(__le32 *)aifcmd->data)) && |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 847 | 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] | 848 | dev->fsa_dev[container].config_waiting_on = 0; |
| 849 | } |
| 850 | break; |
| 851 | |
| 852 | case AifCmdEventNotify: |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 853 | switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) { |
Salyzyn, Mark | 95e852e | 2008-01-08 12:01:07 -0800 | [diff] [blame] | 854 | case AifEnBatteryEvent: |
| 855 | dev->cache_protected = |
| 856 | (((__le32 *)aifcmd->data)[1] == cpu_to_le32(3)); |
| 857 | break; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 858 | /* |
| 859 | * Add an Array. |
| 860 | */ |
| 861 | case AifEnAddContainer: |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 862 | container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 863 | if (container >= dev->maximum_num_containers) |
| 864 | break; |
| 865 | dev->fsa_dev[container].config_needed = ADD; |
| 866 | dev->fsa_dev[container].config_waiting_on = |
| 867 | AifEnConfigChange; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 868 | dev->fsa_dev[container].config_waiting_stamp = jiffies; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 869 | break; |
| 870 | |
| 871 | /* |
| 872 | * Delete an Array. |
| 873 | */ |
| 874 | case AifEnDeleteContainer: |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 875 | container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 876 | if (container >= dev->maximum_num_containers) |
| 877 | break; |
| 878 | dev->fsa_dev[container].config_needed = DELETE; |
| 879 | dev->fsa_dev[container].config_waiting_on = |
| 880 | AifEnConfigChange; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 881 | dev->fsa_dev[container].config_waiting_stamp = jiffies; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 882 | break; |
| 883 | |
| 884 | /* |
| 885 | * Container change detected. If we currently are not |
| 886 | * waiting on something else, setup to wait on a Config Change. |
| 887 | */ |
| 888 | case AifEnContainerChange: |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 889 | container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 890 | if (container >= dev->maximum_num_containers) |
| 891 | break; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 892 | if (dev->fsa_dev[container].config_waiting_on && |
| 893 | 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] | 894 | break; |
| 895 | dev->fsa_dev[container].config_needed = CHANGE; |
| 896 | dev->fsa_dev[container].config_waiting_on = |
| 897 | AifEnConfigChange; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 898 | dev->fsa_dev[container].config_waiting_stamp = jiffies; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 899 | break; |
| 900 | |
| 901 | case AifEnConfigChange: |
| 902 | break; |
| 903 | |
Salyzyn, Mark | cb1042f | 2008-01-17 09:25:07 -0800 | [diff] [blame^] | 904 | case AifEnAddJBOD: |
| 905 | case AifEnDeleteJBOD: |
| 906 | container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); |
| 907 | if ((container >> 28)) |
| 908 | break; |
| 909 | channel = (container >> 24) & 0xF; |
| 910 | if (channel >= dev->maximum_num_channels) |
| 911 | break; |
| 912 | id = container & 0xFFFF; |
| 913 | if (id >= dev->maximum_num_physicals) |
| 914 | break; |
| 915 | lun = (container >> 16) & 0xFF; |
| 916 | channel = aac_phys_to_logical(channel); |
| 917 | device_config_needed = |
| 918 | (((__le32 *)aifcmd->data)[0] == |
| 919 | cpu_to_le32(AifEnAddJBOD)) ? ADD : DELETE; |
| 920 | break; |
| 921 | |
Salyzyn, Mark | 0995ad3 | 2008-01-11 11:56:07 -0800 | [diff] [blame] | 922 | case AifEnEnclosureManagement: |
Salyzyn, Mark | cb1042f | 2008-01-17 09:25:07 -0800 | [diff] [blame^] | 923 | /* |
| 924 | * If in JBOD mode, automatic exposure of new |
| 925 | * physical target to be suppressed until configured. |
| 926 | */ |
| 927 | if (dev->jbod) |
| 928 | break; |
Salyzyn, Mark | 0995ad3 | 2008-01-11 11:56:07 -0800 | [diff] [blame] | 929 | switch (le32_to_cpu(((__le32 *)aifcmd->data)[3])) { |
| 930 | case EM_DRIVE_INSERTION: |
| 931 | case EM_DRIVE_REMOVAL: |
| 932 | container = le32_to_cpu( |
| 933 | ((__le32 *)aifcmd->data)[2]); |
| 934 | if ((container >> 28)) |
| 935 | break; |
| 936 | channel = (container >> 24) & 0xF; |
| 937 | if (channel >= dev->maximum_num_channels) |
| 938 | break; |
| 939 | id = container & 0xFFFF; |
| 940 | lun = (container >> 16) & 0xFF; |
| 941 | if (id >= dev->maximum_num_physicals) { |
| 942 | /* legacy dev_t ? */ |
| 943 | if ((0x2000 <= id) || lun || channel || |
| 944 | ((channel = (id >> 7) & 0x3F) >= |
| 945 | dev->maximum_num_channels)) |
| 946 | break; |
| 947 | lun = (id >> 4) & 7; |
| 948 | id &= 0xF; |
| 949 | } |
| 950 | channel = aac_phys_to_logical(channel); |
| 951 | device_config_needed = |
| 952 | (((__le32 *)aifcmd->data)[3] |
| 953 | == cpu_to_le32(EM_DRIVE_INSERTION)) ? |
| 954 | ADD : DELETE; |
| 955 | break; |
| 956 | } |
| 957 | break; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 958 | } |
| 959 | |
| 960 | /* |
| 961 | * If we are waiting on something and this happens to be |
| 962 | * that thing then set the re-configure flag. |
| 963 | */ |
| 964 | if (container != (u32)-1) { |
| 965 | if (container >= dev->maximum_num_containers) |
| 966 | break; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 967 | if ((dev->fsa_dev[container].config_waiting_on == |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 968 | le32_to_cpu(*(__le32 *)aifcmd->data)) && |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 969 | 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] | 970 | dev->fsa_dev[container].config_waiting_on = 0; |
| 971 | } else for (container = 0; |
| 972 | container < dev->maximum_num_containers; ++container) { |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 973 | if ((dev->fsa_dev[container].config_waiting_on == |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 974 | le32_to_cpu(*(__le32 *)aifcmd->data)) && |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 975 | 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] | 976 | dev->fsa_dev[container].config_waiting_on = 0; |
| 977 | } |
| 978 | break; |
| 979 | |
| 980 | case AifCmdJobProgress: |
| 981 | /* |
| 982 | * These are job progress AIF's. When a Clear is being |
| 983 | * done on a container it is initially created then hidden from |
| 984 | * the OS. When the clear completes we don't get a config |
| 985 | * change so we monitor the job status complete on a clear then |
| 986 | * wait for a container change. |
| 987 | */ |
| 988 | |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 989 | if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) && |
| 990 | (((__le32 *)aifcmd->data)[6] == ((__le32 *)aifcmd->data)[5] || |
| 991 | ((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsSuccess))) { |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 992 | for (container = 0; |
| 993 | container < dev->maximum_num_containers; |
| 994 | ++container) { |
| 995 | /* |
| 996 | * Stomp on all config sequencing for all |
| 997 | * containers? |
| 998 | */ |
| 999 | dev->fsa_dev[container].config_waiting_on = |
| 1000 | AifEnContainerChange; |
| 1001 | dev->fsa_dev[container].config_needed = ADD; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 1002 | dev->fsa_dev[container].config_waiting_stamp = |
| 1003 | jiffies; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1004 | } |
| 1005 | } |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 1006 | if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) && |
| 1007 | ((__le32 *)aifcmd->data)[6] == 0 && |
| 1008 | ((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsRunning)) { |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1009 | for (container = 0; |
| 1010 | container < dev->maximum_num_containers; |
| 1011 | ++container) { |
| 1012 | /* |
| 1013 | * Stomp on all config sequencing for all |
| 1014 | * containers? |
| 1015 | */ |
| 1016 | dev->fsa_dev[container].config_waiting_on = |
| 1017 | AifEnContainerChange; |
| 1018 | dev->fsa_dev[container].config_needed = DELETE; |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 1019 | dev->fsa_dev[container].config_waiting_stamp = |
| 1020 | jiffies; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1021 | } |
| 1022 | } |
| 1023 | break; |
| 1024 | } |
| 1025 | |
Salyzyn, Mark | 0995ad3 | 2008-01-11 11:56:07 -0800 | [diff] [blame] | 1026 | if (device_config_needed == NOTHING) |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1027 | for (container = 0; container < dev->maximum_num_containers; |
| 1028 | ++container) { |
Mark Haverkamp | 31876f3 | 2006-03-27 09:43:55 -0800 | [diff] [blame] | 1029 | if ((dev->fsa_dev[container].config_waiting_on == 0) && |
| 1030 | (dev->fsa_dev[container].config_needed != NOTHING) && |
| 1031 | 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] | 1032 | device_config_needed = |
| 1033 | dev->fsa_dev[container].config_needed; |
| 1034 | dev->fsa_dev[container].config_needed = NOTHING; |
Salyzyn, Mark | 0995ad3 | 2008-01-11 11:56:07 -0800 | [diff] [blame] | 1035 | channel = CONTAINER_TO_CHANNEL(container); |
| 1036 | id = CONTAINER_TO_ID(container); |
| 1037 | lun = CONTAINER_TO_LUN(container); |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1038 | break; |
| 1039 | } |
| 1040 | } |
| 1041 | if (device_config_needed == NOTHING) |
| 1042 | return; |
| 1043 | |
| 1044 | /* |
| 1045 | * If we decided that a re-configuration needs to be done, |
| 1046 | * schedule it here on the way out the door, please close the door |
| 1047 | * behind you. |
| 1048 | */ |
| 1049 | |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1050 | /* |
Christoph Hellwig | f64a181 | 2005-10-31 18:32:08 +0100 | [diff] [blame] | 1051 | * Find the scsi_device associated with the SCSI address, |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1052 | * and mark it as changed, invalidating the cache. This deals |
| 1053 | * with changes to existing device IDs. |
| 1054 | */ |
| 1055 | |
| 1056 | if (!dev || !dev->scsi_host_ptr) |
| 1057 | return; |
| 1058 | /* |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 1059 | * force reload of disk info via aac_probe_container |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1060 | */ |
Salyzyn, Mark | 0995ad3 | 2008-01-11 11:56:07 -0800 | [diff] [blame] | 1061 | if ((channel == CONTAINER_CHANNEL) && |
| 1062 | (device_config_needed != NOTHING)) { |
| 1063 | if (dev->fsa_dev[container].valid == 1) |
| 1064 | dev->fsa_dev[container].valid = 2; |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 1065 | aac_probe_container(dev, container); |
Salyzyn, Mark | 0995ad3 | 2008-01-11 11:56:07 -0800 | [diff] [blame] | 1066 | } |
| 1067 | device = scsi_device_lookup(dev->scsi_host_ptr, channel, id, lun); |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1068 | if (device) { |
| 1069 | switch (device_config_needed) { |
| 1070 | case DELETE: |
Salyzyn, Mark | 0995ad3 | 2008-01-11 11:56:07 -0800 | [diff] [blame] | 1071 | if (scsi_device_online(device)) { |
| 1072 | scsi_device_set_state(device, SDEV_OFFLINE); |
| 1073 | sdev_printk(KERN_INFO, device, |
| 1074 | "Device offlined - %s\n", |
| 1075 | (channel == CONTAINER_CHANNEL) ? |
| 1076 | "array deleted" : |
| 1077 | "enclosure services event"); |
| 1078 | } |
| 1079 | break; |
| 1080 | case ADD: |
| 1081 | if (!scsi_device_online(device)) { |
| 1082 | sdev_printk(KERN_INFO, device, |
| 1083 | "Device online - %s\n", |
| 1084 | (channel == CONTAINER_CHANNEL) ? |
| 1085 | "array created" : |
| 1086 | "enclosure services event"); |
| 1087 | scsi_device_set_state(device, SDEV_RUNNING); |
| 1088 | } |
| 1089 | /* FALLTHRU */ |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1090 | case CHANGE: |
Salyzyn, Mark | 0995ad3 | 2008-01-11 11:56:07 -0800 | [diff] [blame] | 1091 | if ((channel == CONTAINER_CHANNEL) |
| 1092 | && (!dev->fsa_dev[container].valid)) { |
| 1093 | if (!scsi_device_online(device)) |
| 1094 | break; |
| 1095 | scsi_device_set_state(device, SDEV_OFFLINE); |
| 1096 | sdev_printk(KERN_INFO, device, |
| 1097 | "Device offlined - %s\n", |
| 1098 | "array failed"); |
| 1099 | break; |
| 1100 | } |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1101 | scsi_rescan_device(&device->sdev_gendev); |
| 1102 | |
| 1103 | default: |
| 1104 | break; |
| 1105 | } |
| 1106 | scsi_device_put(device); |
Salyzyn, Mark | 0995ad3 | 2008-01-11 11:56:07 -0800 | [diff] [blame] | 1107 | device_config_needed = NOTHING; |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1108 | } |
Salyzyn, Mark | 0995ad3 | 2008-01-11 11:56:07 -0800 | [diff] [blame] | 1109 | if (device_config_needed == ADD) |
| 1110 | scsi_add_device(dev->scsi_host_ptr, channel, id, lun); |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1111 | } |
| 1112 | |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1113 | static int _aac_reset_adapter(struct aac_dev *aac, int forced) |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1114 | { |
| 1115 | int index, quirks; |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1116 | int retval; |
| 1117 | struct Scsi_Host *host; |
| 1118 | struct scsi_device *dev; |
| 1119 | struct scsi_cmnd *command; |
| 1120 | struct scsi_cmnd *command_list; |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1121 | int jafo = 0; |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1122 | |
| 1123 | /* |
| 1124 | * Assumptions: |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1125 | * - host is locked, unless called by the aacraid thread. |
| 1126 | * (a matter of convenience, due to legacy issues surrounding |
| 1127 | * eh_host_adapter_reset). |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1128 | * - in_reset is asserted, so no new i/o is getting to the |
| 1129 | * card. |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1130 | * - The card is dead, or will be very shortly ;-/ so no new |
| 1131 | * commands are completing in the interrupt service. |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1132 | */ |
| 1133 | host = aac->scsi_host_ptr; |
| 1134 | scsi_block_requests(host); |
| 1135 | aac_adapter_disable_int(aac); |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1136 | if (aac->thread->pid != current->pid) { |
| 1137 | spin_unlock_irq(host->host_lock); |
| 1138 | kthread_stop(aac->thread); |
| 1139 | jafo = 1; |
| 1140 | } |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1141 | |
| 1142 | /* |
| 1143 | * If a positive health, means in a known DEAD PANIC |
| 1144 | * state and the adapter could be reset to `try again'. |
| 1145 | */ |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1146 | retval = aac_adapter_restart(aac, forced ? 0 : aac_adapter_check_health(aac)); |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1147 | |
| 1148 | if (retval) |
| 1149 | goto out; |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1150 | |
Mark Haverkamp | d18b448 | 2006-11-21 10:40:31 -0800 | [diff] [blame] | 1151 | /* |
| 1152 | * Loop through the fibs, close the synchronous FIBS |
| 1153 | */ |
Mark Haverkamp | 33bb3b2 | 2007-03-15 10:27:21 -0700 | [diff] [blame] | 1154 | 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] | 1155 | struct fib *fib = &aac->fibs[index]; |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 1156 | if (!(fib->hw_fib_va->header.XferState & cpu_to_le32(NoResponseExpected | Async)) && |
| 1157 | (fib->hw_fib_va->header.XferState & cpu_to_le32(ResponseExpected))) { |
Mark Haverkamp | d18b448 | 2006-11-21 10:40:31 -0800 | [diff] [blame] | 1158 | unsigned long flagv; |
| 1159 | spin_lock_irqsave(&fib->event_lock, flagv); |
| 1160 | up(&fib->event_wait); |
| 1161 | spin_unlock_irqrestore(&fib->event_lock, flagv); |
| 1162 | schedule(); |
Mark Haverkamp | 33bb3b2 | 2007-03-15 10:27:21 -0700 | [diff] [blame] | 1163 | retval = 0; |
Mark Haverkamp | d18b448 | 2006-11-21 10:40:31 -0800 | [diff] [blame] | 1164 | } |
| 1165 | } |
Mark Haverkamp | 33bb3b2 | 2007-03-15 10:27:21 -0700 | [diff] [blame] | 1166 | /* Give some extra time for ioctls to complete. */ |
| 1167 | if (retval == 0) |
| 1168 | ssleep(2); |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1169 | index = aac->cardtype; |
| 1170 | |
| 1171 | /* |
| 1172 | * Re-initialize the adapter, first free resources, then carefully |
| 1173 | * apply the initialization sequence to come back again. Only risk |
| 1174 | * is a change in Firmware dropping cache, it is assumed the caller |
| 1175 | * will ensure that i/o is queisced and the card is flushed in that |
| 1176 | * case. |
| 1177 | */ |
| 1178 | aac_fib_map_free(aac); |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1179 | pci_free_consistent(aac->pdev, aac->comm_size, aac->comm_addr, aac->comm_phys); |
| 1180 | aac->comm_addr = NULL; |
| 1181 | aac->comm_phys = 0; |
| 1182 | kfree(aac->queues); |
| 1183 | aac->queues = NULL; |
| 1184 | free_irq(aac->pdev->irq, aac); |
| 1185 | kfree(aac->fsa_dev); |
| 1186 | aac->fsa_dev = NULL; |
Salyzyn, Mark | 94cf6ba | 2007-12-13 16:14:18 -0800 | [diff] [blame] | 1187 | quirks = aac_get_driver_ident(index)->quirks; |
| 1188 | if (quirks & AAC_QUIRK_31BIT) { |
Salyzyn, Mark | 9ad5204 | 2007-07-17 11:15:08 -0400 | [diff] [blame] | 1189 | if (((retval = pci_set_dma_mask(aac->pdev, DMA_31BIT_MASK))) || |
| 1190 | ((retval = pci_set_consistent_dma_mask(aac->pdev, DMA_31BIT_MASK)))) |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1191 | goto out; |
| 1192 | } else { |
Salyzyn, Mark | 9ad5204 | 2007-07-17 11:15:08 -0400 | [diff] [blame] | 1193 | if (((retval = pci_set_dma_mask(aac->pdev, DMA_32BIT_MASK))) || |
| 1194 | ((retval = pci_set_consistent_dma_mask(aac->pdev, DMA_32BIT_MASK)))) |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1195 | goto out; |
| 1196 | } |
| 1197 | if ((retval = (*(aac_get_driver_ident(index)->init))(aac))) |
| 1198 | goto out; |
Salyzyn, Mark | 94cf6ba | 2007-12-13 16:14:18 -0800 | [diff] [blame] | 1199 | if (quirks & AAC_QUIRK_31BIT) |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1200 | if ((retval = pci_set_dma_mask(aac->pdev, DMA_32BIT_MASK))) |
| 1201 | goto out; |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1202 | if (jafo) { |
| 1203 | aac->thread = kthread_run(aac_command_thread, aac, aac->name); |
| 1204 | if (IS_ERR(aac->thread)) { |
| 1205 | retval = PTR_ERR(aac->thread); |
| 1206 | goto out; |
| 1207 | } |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1208 | } |
| 1209 | (void)aac_get_adapter_info(aac); |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1210 | if ((quirks & AAC_QUIRK_34SG) && (host->sg_tablesize > 34)) { |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 1211 | host->sg_tablesize = 34; |
| 1212 | host->max_sectors = (host->sg_tablesize * 8) + 112; |
| 1213 | } |
| 1214 | if ((quirks & AAC_QUIRK_17SG) && (host->sg_tablesize > 17)) { |
| 1215 | host->sg_tablesize = 17; |
| 1216 | host->max_sectors = (host->sg_tablesize * 8) + 112; |
| 1217 | } |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1218 | aac_get_config_status(aac, 1); |
| 1219 | aac_get_containers(aac); |
| 1220 | /* |
| 1221 | * This is where the assumption that the Adapter is quiesced |
| 1222 | * is important. |
| 1223 | */ |
| 1224 | command_list = NULL; |
| 1225 | __shost_for_each_device(dev, host) { |
| 1226 | unsigned long flags; |
| 1227 | spin_lock_irqsave(&dev->list_lock, flags); |
| 1228 | list_for_each_entry(command, &dev->cmd_list, list) |
| 1229 | if (command->SCp.phase == AAC_OWNER_FIRMWARE) { |
| 1230 | command->SCp.buffer = (struct scatterlist *)command_list; |
| 1231 | command_list = command; |
| 1232 | } |
| 1233 | spin_unlock_irqrestore(&dev->list_lock, flags); |
| 1234 | } |
| 1235 | while ((command = command_list)) { |
| 1236 | command_list = (struct scsi_cmnd *)command->SCp.buffer; |
| 1237 | command->SCp.buffer = NULL; |
| 1238 | command->result = DID_OK << 16 |
| 1239 | | COMMAND_COMPLETE << 8 |
| 1240 | | SAM_STAT_TASK_SET_FULL; |
| 1241 | command->SCp.phase = AAC_OWNER_ERROR_HANDLER; |
| 1242 | command->scsi_done(command); |
| 1243 | } |
| 1244 | retval = 0; |
| 1245 | |
| 1246 | out: |
| 1247 | aac->in_reset = 0; |
| 1248 | scsi_unblock_requests(host); |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1249 | if (jafo) { |
| 1250 | spin_lock_irq(host->host_lock); |
| 1251 | } |
| 1252 | return retval; |
| 1253 | } |
| 1254 | |
| 1255 | int aac_reset_adapter(struct aac_dev * aac, int forced) |
| 1256 | { |
| 1257 | unsigned long flagv = 0; |
| 1258 | int retval; |
| 1259 | struct Scsi_Host * host; |
| 1260 | |
| 1261 | if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0) |
| 1262 | return -EBUSY; |
| 1263 | |
| 1264 | if (aac->in_reset) { |
| 1265 | spin_unlock_irqrestore(&aac->fib_lock, flagv); |
| 1266 | return -EBUSY; |
| 1267 | } |
| 1268 | aac->in_reset = 1; |
| 1269 | spin_unlock_irqrestore(&aac->fib_lock, flagv); |
| 1270 | |
| 1271 | /* |
| 1272 | * Wait for all commands to complete to this specific |
| 1273 | * target (block maximum 60 seconds). Although not necessary, |
| 1274 | * it does make us a good storage citizen. |
| 1275 | */ |
| 1276 | host = aac->scsi_host_ptr; |
| 1277 | scsi_block_requests(host); |
| 1278 | if (forced < 2) for (retval = 60; retval; --retval) { |
| 1279 | struct scsi_device * dev; |
| 1280 | struct scsi_cmnd * command; |
| 1281 | int active = 0; |
| 1282 | |
| 1283 | __shost_for_each_device(dev, host) { |
| 1284 | spin_lock_irqsave(&dev->list_lock, flagv); |
| 1285 | list_for_each_entry(command, &dev->cmd_list, list) { |
| 1286 | if (command->SCp.phase == AAC_OWNER_FIRMWARE) { |
| 1287 | active++; |
| 1288 | break; |
| 1289 | } |
| 1290 | } |
| 1291 | spin_unlock_irqrestore(&dev->list_lock, flagv); |
| 1292 | if (active) |
| 1293 | break; |
| 1294 | |
| 1295 | } |
| 1296 | /* |
| 1297 | * We can exit If all the commands are complete |
| 1298 | */ |
| 1299 | if (active == 0) |
| 1300 | break; |
| 1301 | ssleep(1); |
| 1302 | } |
| 1303 | |
| 1304 | /* Quiesce build, flush cache, write through mode */ |
Salyzyn, Mark | f858317 | 2007-10-30 15:50:49 -0400 | [diff] [blame] | 1305 | if (forced < 2) |
| 1306 | aac_send_shutdown(aac); |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1307 | spin_lock_irqsave(host->host_lock, flagv); |
Salyzyn, Mark | f858317 | 2007-10-30 15:50:49 -0400 | [diff] [blame] | 1308 | 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] | 1309 | spin_unlock_irqrestore(host->host_lock, flagv); |
| 1310 | |
Salyzyn, Mark | f858317 | 2007-10-30 15:50:49 -0400 | [diff] [blame] | 1311 | if ((forced < 2) && (retval == -ENODEV)) { |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1312 | /* Unwind aac_send_shutdown() IOP_RESET unsupported/disabled */ |
| 1313 | struct fib * fibctx = aac_fib_alloc(aac); |
| 1314 | if (fibctx) { |
| 1315 | struct aac_pause *cmd; |
| 1316 | int status; |
| 1317 | |
| 1318 | aac_fib_init(fibctx); |
| 1319 | |
| 1320 | cmd = (struct aac_pause *) fib_data(fibctx); |
| 1321 | |
| 1322 | cmd->command = cpu_to_le32(VM_ContainerConfig); |
| 1323 | cmd->type = cpu_to_le32(CT_PAUSE_IO); |
| 1324 | cmd->timeout = cpu_to_le32(1); |
| 1325 | cmd->min = cpu_to_le32(1); |
| 1326 | cmd->noRescan = cpu_to_le32(1); |
| 1327 | cmd->count = cpu_to_le32(0); |
| 1328 | |
| 1329 | status = aac_fib_send(ContainerCommand, |
| 1330 | fibctx, |
| 1331 | sizeof(struct aac_pause), |
| 1332 | FsaNormal, |
| 1333 | -2 /* Timeout silently */, 1, |
| 1334 | NULL, NULL); |
| 1335 | |
| 1336 | if (status >= 0) |
| 1337 | aac_fib_complete(fibctx); |
| 1338 | aac_fib_free(fibctx); |
| 1339 | } |
| 1340 | } |
| 1341 | |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1342 | return retval; |
| 1343 | } |
| 1344 | |
| 1345 | int aac_check_health(struct aac_dev * aac) |
| 1346 | { |
| 1347 | int BlinkLED; |
| 1348 | unsigned long time_now, flagv = 0; |
| 1349 | struct list_head * entry; |
| 1350 | struct Scsi_Host * host; |
| 1351 | |
| 1352 | /* Extending the scope of fib_lock slightly to protect aac->in_reset */ |
| 1353 | if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0) |
| 1354 | return 0; |
| 1355 | |
| 1356 | if (aac->in_reset || !(BlinkLED = aac_adapter_check_health(aac))) { |
| 1357 | spin_unlock_irqrestore(&aac->fib_lock, flagv); |
| 1358 | return 0; /* OK */ |
| 1359 | } |
| 1360 | |
| 1361 | aac->in_reset = 1; |
| 1362 | |
| 1363 | /* Fake up an AIF: |
| 1364 | * aac_aifcmd.command = AifCmdEventNotify = 1 |
| 1365 | * aac_aifcmd.seqnum = 0xFFFFFFFF |
| 1366 | * aac_aifcmd.data[0] = AifEnExpEvent = 23 |
| 1367 | * aac_aifcmd.data[1] = AifExeFirmwarePanic = 3 |
| 1368 | * aac.aifcmd.data[2] = AifHighPriority = 3 |
| 1369 | * aac.aifcmd.data[3] = BlinkLED |
| 1370 | */ |
| 1371 | |
| 1372 | time_now = jiffies/HZ; |
| 1373 | entry = aac->fib_list.next; |
| 1374 | |
| 1375 | /* |
| 1376 | * For each Context that is on the |
| 1377 | * fibctxList, make a copy of the |
| 1378 | * fib, and then set the event to wake up the |
| 1379 | * thread that is waiting for it. |
| 1380 | */ |
| 1381 | while (entry != &aac->fib_list) { |
| 1382 | /* |
| 1383 | * Extract the fibctx |
| 1384 | */ |
| 1385 | struct aac_fib_context *fibctx = list_entry(entry, struct aac_fib_context, next); |
| 1386 | struct hw_fib * hw_fib; |
| 1387 | struct fib * fib; |
| 1388 | /* |
| 1389 | * Check if the queue is getting |
| 1390 | * backlogged |
| 1391 | */ |
| 1392 | if (fibctx->count > 20) { |
| 1393 | /* |
| 1394 | * It's *not* jiffies folks, |
| 1395 | * but jiffies / HZ, so do not |
| 1396 | * panic ... |
| 1397 | */ |
| 1398 | u32 time_last = fibctx->jiffies; |
| 1399 | /* |
| 1400 | * Has it been > 2 minutes |
| 1401 | * since the last read off |
| 1402 | * the queue? |
| 1403 | */ |
| 1404 | if ((time_now - time_last) > aif_timeout) { |
| 1405 | entry = entry->next; |
| 1406 | aac_close_fib_context(aac, fibctx); |
| 1407 | continue; |
| 1408 | } |
| 1409 | } |
| 1410 | /* |
| 1411 | * Warning: no sleep allowed while |
| 1412 | * holding spinlock |
| 1413 | */ |
Salyzyn, Mark | 4dbc22d | 2007-04-16 11:21:50 -0400 | [diff] [blame] | 1414 | hw_fib = kzalloc(sizeof(struct hw_fib), GFP_ATOMIC); |
| 1415 | fib = kzalloc(sizeof(struct fib), GFP_ATOMIC); |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1416 | if (fib && hw_fib) { |
| 1417 | struct aac_aifcmd * aif; |
| 1418 | |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 1419 | fib->hw_fib_va = hw_fib; |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1420 | fib->dev = aac; |
| 1421 | aac_fib_init(fib); |
| 1422 | fib->type = FSAFS_NTC_FIB_CONTEXT; |
| 1423 | fib->size = sizeof (struct fib); |
| 1424 | fib->data = hw_fib->data; |
| 1425 | aif = (struct aac_aifcmd *)hw_fib->data; |
| 1426 | aif->command = cpu_to_le32(AifCmdEventNotify); |
Salyzyn, Mark | a3940da | 2008-01-08 12:48:25 -0800 | [diff] [blame] | 1427 | aif->seqnum = cpu_to_le32(0xFFFFFFFF); |
| 1428 | ((__le32 *)aif->data)[0] = cpu_to_le32(AifEnExpEvent); |
| 1429 | ((__le32 *)aif->data)[1] = cpu_to_le32(AifExeFirmwarePanic); |
| 1430 | ((__le32 *)aif->data)[2] = cpu_to_le32(AifHighPriority); |
| 1431 | ((__le32 *)aif->data)[3] = cpu_to_le32(BlinkLED); |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1432 | |
| 1433 | /* |
| 1434 | * Put the FIB onto the |
| 1435 | * fibctx's fibs |
| 1436 | */ |
| 1437 | list_add_tail(&fib->fiblink, &fibctx->fib_list); |
| 1438 | fibctx->count++; |
| 1439 | /* |
| 1440 | * Set the event to wake up the |
| 1441 | * thread that will waiting. |
| 1442 | */ |
| 1443 | up(&fibctx->wait_sem); |
| 1444 | } else { |
| 1445 | printk(KERN_WARNING "aifd: didn't allocate NewFib.\n"); |
| 1446 | kfree(fib); |
| 1447 | kfree(hw_fib); |
| 1448 | } |
| 1449 | entry = entry->next; |
| 1450 | } |
| 1451 | |
| 1452 | spin_unlock_irqrestore(&aac->fib_lock, flagv); |
| 1453 | |
| 1454 | if (BlinkLED < 0) { |
| 1455 | printk(KERN_ERR "%s: Host adapter dead %d\n", aac->name, BlinkLED); |
| 1456 | goto out; |
| 1457 | } |
| 1458 | |
| 1459 | printk(KERN_ERR "%s: Host adapter BLINK LED 0x%x\n", aac->name, BlinkLED); |
| 1460 | |
Salyzyn, Mark | a3940da | 2008-01-08 12:48:25 -0800 | [diff] [blame] | 1461 | if (!aac_check_reset || ((aac_check_reset != 1) && |
| 1462 | (aac->supplement_adapter_info.SupportedOptions2 & |
| 1463 | AAC_OPTION_IGNORE_RESET))) |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1464 | goto out; |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1465 | host = aac->scsi_host_ptr; |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1466 | if (aac->thread->pid != current->pid) |
| 1467 | spin_lock_irqsave(host->host_lock, flagv); |
Salyzyn, Mark | f858317 | 2007-10-30 15:50:49 -0400 | [diff] [blame] | 1468 | BlinkLED = _aac_reset_adapter(aac, aac_check_reset != 1); |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1469 | if (aac->thread->pid != current->pid) |
| 1470 | spin_unlock_irqrestore(host->host_lock, flagv); |
Mark Haverkamp | 8c867b2 | 2006-08-03 08:03:30 -0700 | [diff] [blame] | 1471 | return BlinkLED; |
| 1472 | |
| 1473 | out: |
| 1474 | aac->in_reset = 0; |
| 1475 | return BlinkLED; |
| 1476 | } |
| 1477 | |
| 1478 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1479 | /** |
| 1480 | * aac_command_thread - command processing thread |
| 1481 | * @dev: Adapter to monitor |
| 1482 | * |
| 1483 | * Waits on the commandready event in it's queue. When the event gets set |
| 1484 | * it will pull FIBs off it's queue. It will continue to pull FIBs off |
| 1485 | * until the queue is empty. When the queue is empty it will wait for |
| 1486 | * more FIBs. |
| 1487 | */ |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 1488 | |
Christoph Hellwig | fe27381 | 2006-02-14 18:45:06 +0100 | [diff] [blame] | 1489 | int aac_command_thread(void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1490 | { |
Christoph Hellwig | fe27381 | 2006-02-14 18:45:06 +0100 | [diff] [blame] | 1491 | struct aac_dev *dev = data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1492 | struct hw_fib *hw_fib, *hw_newfib; |
| 1493 | struct fib *fib, *newfib; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1494 | struct aac_fib_context *fibctx; |
| 1495 | unsigned long flags; |
| 1496 | DECLARE_WAITQUEUE(wait, current); |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1497 | unsigned long next_jiffies = jiffies + HZ; |
| 1498 | unsigned long next_check_jiffies = next_jiffies; |
| 1499 | long difference = HZ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1500 | |
| 1501 | /* |
| 1502 | * We can only have one thread per adapter for AIF's. |
| 1503 | */ |
| 1504 | if (dev->aif_thread) |
| 1505 | return -EINVAL; |
Christoph Hellwig | fe27381 | 2006-02-14 18:45:06 +0100 | [diff] [blame] | 1506 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1507 | /* |
| 1508 | * Let the DPC know it has a place to send the AIF's to. |
| 1509 | */ |
| 1510 | dev->aif_thread = 1; |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1511 | add_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1512 | set_current_state(TASK_INTERRUPTIBLE); |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1513 | dprintk ((KERN_INFO "aac_command_thread start\n")); |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 1514 | while (1) { |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1515 | spin_lock_irqsave(dev->queues->queue[HostNormCmdQueue].lock, flags); |
| 1516 | while(!list_empty(&(dev->queues->queue[HostNormCmdQueue].cmdq))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1517 | struct list_head *entry; |
| 1518 | struct aac_aifcmd * aifcmd; |
| 1519 | |
| 1520 | set_current_state(TASK_RUNNING); |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 1521 | |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1522 | entry = dev->queues->queue[HostNormCmdQueue].cmdq.next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1523 | list_del(entry); |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 1524 | |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1525 | spin_unlock_irqrestore(dev->queues->queue[HostNormCmdQueue].lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1526 | fib = list_entry(entry, struct fib, fiblink); |
| 1527 | /* |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 1528 | * We will process the FIB here or pass it to a |
| 1529 | * worker thread that is TBD. We Really can't |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1530 | * do anything at this point since we don't have |
| 1531 | * anything defined for this thread to do. |
| 1532 | */ |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 1533 | hw_fib = fib->hw_fib_va; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1534 | memset(fib, 0, sizeof(struct fib)); |
| 1535 | fib->type = FSAFS_NTC_FIB_CONTEXT; |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 1536 | fib->size = sizeof(struct fib); |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 1537 | fib->hw_fib_va = hw_fib; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1538 | fib->data = hw_fib->data; |
| 1539 | fib->dev = dev; |
| 1540 | /* |
| 1541 | * We only handle AifRequest fibs from the adapter. |
| 1542 | */ |
| 1543 | aifcmd = (struct aac_aifcmd *) hw_fib->data; |
| 1544 | if (aifcmd->command == cpu_to_le32(AifCmdDriverNotify)) { |
| 1545 | /* Handle Driver Notify Events */ |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1546 | aac_handle_aif(dev, fib); |
Mark Haverkamp | 56b5871 | 2005-04-27 06:05:51 -0700 | [diff] [blame] | 1547 | *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK); |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 1548 | aac_fib_adapter_complete(fib, (u16)sizeof(u32)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1549 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1550 | /* The u32 here is important and intended. We are using |
| 1551 | 32bit wrapping time to fit the adapter field */ |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 1552 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1553 | u32 time_now, time_last; |
| 1554 | unsigned long flagv; |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1555 | unsigned num; |
| 1556 | struct hw_fib ** hw_fib_pool, ** hw_fib_p; |
| 1557 | struct fib ** fib_pool, ** fib_p; |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 1558 | |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1559 | /* Sniff events */ |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 1560 | if ((aifcmd->command == |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1561 | cpu_to_le32(AifCmdEventNotify)) || |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 1562 | (aifcmd->command == |
Mark Haverkamp | 131256c | 2005-09-26 13:04:56 -0700 | [diff] [blame] | 1563 | cpu_to_le32(AifCmdJobProgress))) { |
| 1564 | aac_handle_aif(dev, fib); |
| 1565 | } |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1566 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1567 | time_now = jiffies/HZ; |
| 1568 | |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1569 | /* |
| 1570 | * Warning: no sleep allowed while |
| 1571 | * holding spinlock. We take the estimate |
| 1572 | * and pre-allocate a set of fibs outside the |
| 1573 | * lock. |
| 1574 | */ |
| 1575 | num = le32_to_cpu(dev->init->AdapterFibsSize) |
| 1576 | / sizeof(struct hw_fib); /* some extra */ |
| 1577 | spin_lock_irqsave(&dev->fib_lock, flagv); |
| 1578 | entry = dev->fib_list.next; |
| 1579 | while (entry != &dev->fib_list) { |
| 1580 | entry = entry->next; |
| 1581 | ++num; |
| 1582 | } |
| 1583 | spin_unlock_irqrestore(&dev->fib_lock, flagv); |
| 1584 | hw_fib_pool = NULL; |
| 1585 | fib_pool = NULL; |
| 1586 | if (num |
| 1587 | && ((hw_fib_pool = kmalloc(sizeof(struct hw_fib *) * num, GFP_KERNEL))) |
| 1588 | && ((fib_pool = kmalloc(sizeof(struct fib *) * num, GFP_KERNEL)))) { |
| 1589 | hw_fib_p = hw_fib_pool; |
| 1590 | fib_p = fib_pool; |
| 1591 | while (hw_fib_p < &hw_fib_pool[num]) { |
| 1592 | if (!(*(hw_fib_p++) = kmalloc(sizeof(struct hw_fib), GFP_KERNEL))) { |
| 1593 | --hw_fib_p; |
| 1594 | break; |
| 1595 | } |
| 1596 | if (!(*(fib_p++) = kmalloc(sizeof(struct fib), GFP_KERNEL))) { |
| 1597 | kfree(*(--hw_fib_p)); |
| 1598 | break; |
| 1599 | } |
| 1600 | } |
| 1601 | if ((num = hw_fib_p - hw_fib_pool) == 0) { |
| 1602 | kfree(fib_pool); |
| 1603 | fib_pool = NULL; |
| 1604 | kfree(hw_fib_pool); |
| 1605 | hw_fib_pool = NULL; |
| 1606 | } |
Jesper Juhl | c9475cb | 2005-11-07 01:01:26 -0800 | [diff] [blame] | 1607 | } else { |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1608 | kfree(hw_fib_pool); |
| 1609 | hw_fib_pool = NULL; |
| 1610 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1611 | spin_lock_irqsave(&dev->fib_lock, flagv); |
| 1612 | entry = dev->fib_list.next; |
| 1613 | /* |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 1614 | * For each Context that is on the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1615 | * fibctxList, make a copy of the |
| 1616 | * fib, and then set the event to wake up the |
| 1617 | * thread that is waiting for it. |
| 1618 | */ |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1619 | hw_fib_p = hw_fib_pool; |
| 1620 | fib_p = fib_pool; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1621 | while (entry != &dev->fib_list) { |
| 1622 | /* |
| 1623 | * Extract the fibctx |
| 1624 | */ |
| 1625 | fibctx = list_entry(entry, struct aac_fib_context, next); |
| 1626 | /* |
| 1627 | * Check if the queue is getting |
| 1628 | * backlogged |
| 1629 | */ |
| 1630 | if (fibctx->count > 20) |
| 1631 | { |
| 1632 | /* |
| 1633 | * It's *not* jiffies folks, |
| 1634 | * but jiffies / HZ so do not |
| 1635 | * panic ... |
| 1636 | */ |
| 1637 | time_last = fibctx->jiffies; |
| 1638 | /* |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 1639 | * Has it been > 2 minutes |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1640 | * since the last read off |
| 1641 | * the queue? |
| 1642 | */ |
Mark Haverkamp | 404d9a9 | 2006-05-10 09:12:48 -0700 | [diff] [blame] | 1643 | if ((time_now - time_last) > aif_timeout) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1644 | entry = entry->next; |
| 1645 | aac_close_fib_context(dev, fibctx); |
| 1646 | continue; |
| 1647 | } |
| 1648 | } |
| 1649 | /* |
| 1650 | * Warning: no sleep allowed while |
| 1651 | * holding spinlock |
| 1652 | */ |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1653 | if (hw_fib_p < &hw_fib_pool[num]) { |
| 1654 | hw_newfib = *hw_fib_p; |
| 1655 | *(hw_fib_p++) = NULL; |
| 1656 | newfib = *fib_p; |
| 1657 | *(fib_p++) = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1658 | /* |
| 1659 | * Make the copy of the FIB |
| 1660 | */ |
| 1661 | memcpy(hw_newfib, hw_fib, sizeof(struct hw_fib)); |
| 1662 | memcpy(newfib, fib, sizeof(struct fib)); |
Mark Haverkamp | a8166a5 | 2007-03-15 10:26:22 -0700 | [diff] [blame] | 1663 | newfib->hw_fib_va = hw_newfib; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1664 | /* |
| 1665 | * Put the FIB onto the |
| 1666 | * fibctx's fibs |
| 1667 | */ |
| 1668 | list_add_tail(&newfib->fiblink, &fibctx->fib_list); |
| 1669 | fibctx->count++; |
Salyzyn, Mark | 8ce3eca | 2008-01-16 07:39:06 -0800 | [diff] [blame] | 1670 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1671 | * Set the event to wake up the |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1672 | * thread that is waiting. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1673 | */ |
| 1674 | up(&fibctx->wait_sem); |
| 1675 | } else { |
| 1676 | printk(KERN_WARNING "aifd: didn't allocate NewFib.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1677 | } |
| 1678 | entry = entry->next; |
| 1679 | } |
| 1680 | /* |
| 1681 | * Set the status of this FIB |
| 1682 | */ |
Mark Haverkamp | 56b5871 | 2005-04-27 06:05:51 -0700 | [diff] [blame] | 1683 | *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK); |
Mark Haverkamp | bfb35aa8 | 2006-02-01 09:30:55 -0800 | [diff] [blame] | 1684 | aac_fib_adapter_complete(fib, sizeof(u32)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1685 | spin_unlock_irqrestore(&dev->fib_lock, flagv); |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1686 | /* Free up the remaining resources */ |
| 1687 | hw_fib_p = hw_fib_pool; |
| 1688 | fib_p = fib_pool; |
| 1689 | while (hw_fib_p < &hw_fib_pool[num]) { |
Jesper Juhl | c9475cb | 2005-11-07 01:01:26 -0800 | [diff] [blame] | 1690 | kfree(*hw_fib_p); |
| 1691 | kfree(*fib_p); |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1692 | ++fib_p; |
| 1693 | ++hw_fib_p; |
| 1694 | } |
Jesper Juhl | c9475cb | 2005-11-07 01:01:26 -0800 | [diff] [blame] | 1695 | kfree(hw_fib_pool); |
| 1696 | kfree(fib_pool); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1697 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1698 | kfree(fib); |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1699 | spin_lock_irqsave(dev->queues->queue[HostNormCmdQueue].lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1700 | } |
| 1701 | /* |
| 1702 | * There are no more AIF's |
| 1703 | */ |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1704 | spin_unlock_irqrestore(dev->queues->queue[HostNormCmdQueue].lock, flags); |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1705 | |
| 1706 | /* |
| 1707 | * Background activity |
| 1708 | */ |
| 1709 | if ((time_before(next_check_jiffies,next_jiffies)) |
| 1710 | && ((difference = next_check_jiffies - jiffies) <= 0)) { |
| 1711 | next_check_jiffies = next_jiffies; |
| 1712 | if (aac_check_health(dev) == 0) { |
| 1713 | difference = ((long)(unsigned)check_interval) |
| 1714 | * HZ; |
| 1715 | next_check_jiffies = jiffies + difference; |
| 1716 | } else if (!dev->queues) |
| 1717 | break; |
| 1718 | } |
| 1719 | if (!time_before(next_check_jiffies,next_jiffies) |
| 1720 | && ((difference = next_jiffies - jiffies) <= 0)) { |
| 1721 | struct timeval now; |
| 1722 | int ret; |
| 1723 | |
| 1724 | /* Don't even try to talk to adapter if its sick */ |
| 1725 | ret = aac_check_health(dev); |
| 1726 | if (!ret && !dev->queues) |
| 1727 | break; |
| 1728 | next_check_jiffies = jiffies |
| 1729 | + ((long)(unsigned)check_interval) |
| 1730 | * HZ; |
| 1731 | do_gettimeofday(&now); |
| 1732 | |
| 1733 | /* Synchronize our watches */ |
| 1734 | if (((1000000 - (1000000 / HZ)) > now.tv_usec) |
| 1735 | && (now.tv_usec > (1000000 / HZ))) |
| 1736 | difference = (((1000000 - now.tv_usec) * HZ) |
| 1737 | + 500000) / 1000000; |
| 1738 | else if (ret == 0) { |
| 1739 | struct fib *fibptr; |
| 1740 | |
| 1741 | if ((fibptr = aac_fib_alloc(dev))) { |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 1742 | __le32 *info; |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1743 | |
| 1744 | aac_fib_init(fibptr); |
| 1745 | |
Christoph Hellwig | f3307f7 | 2007-11-08 17:27:47 +0000 | [diff] [blame] | 1746 | info = (__le32 *) fib_data(fibptr); |
Salyzyn, Mark | 29c9768 | 2007-06-12 09:33:54 -0400 | [diff] [blame] | 1747 | if (now.tv_usec > 500000) |
| 1748 | ++now.tv_sec; |
| 1749 | |
| 1750 | *info = cpu_to_le32(now.tv_sec); |
| 1751 | |
| 1752 | (void)aac_fib_send(SendHostTime, |
| 1753 | fibptr, |
| 1754 | sizeof(*info), |
| 1755 | FsaNormal, |
| 1756 | 1, 1, |
| 1757 | NULL, |
| 1758 | NULL); |
| 1759 | aac_fib_complete(fibptr); |
| 1760 | aac_fib_free(fibptr); |
| 1761 | } |
| 1762 | difference = (long)(unsigned)update_interval*HZ; |
| 1763 | } else { |
| 1764 | /* retry shortly */ |
| 1765 | difference = 10 * HZ; |
| 1766 | } |
| 1767 | next_jiffies = jiffies + difference; |
| 1768 | if (time_before(next_check_jiffies,next_jiffies)) |
| 1769 | difference = next_check_jiffies - jiffies; |
| 1770 | } |
| 1771 | if (difference <= 0) |
| 1772 | difference = 1; |
| 1773 | set_current_state(TASK_INTERRUPTIBLE); |
| 1774 | schedule_timeout(difference); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1775 | |
Christoph Hellwig | fe27381 | 2006-02-14 18:45:06 +0100 | [diff] [blame] | 1776 | if (kthread_should_stop()) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1777 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1778 | } |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1779 | if (dev->queues) |
| 1780 | remove_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1781 | dev->aif_thread = 0; |
Mark Haverkamp | 2f130980 | 2005-09-26 13:02:15 -0700 | [diff] [blame] | 1782 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1783 | } |