// SPDX-License-Identifier: GPL-2.0-or-later /* * Adaptec AAC series RAID controller driver * (c) Copyright 2001 Red Hat Inc. * * based on the old aacraid driver that is.. * Adaptec aacraid device driver for Linux. * * Copyright (c) 2000-2010 Adaptec, Inc. * 2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com) * 2016-2017 Microsemi Corp. (aacraid@microsemi.com) * * Module Name: * commsup.c * * Abstract: Contain all routines that are required for FSA host/adapter * communication.
*/
/** * fib_map_alloc - allocate the fib objects * @dev: Adapter to allocate for * * Allocate and map the shared PCI space for the FIB blocks used to * talk to the Adaptec firmware.
*/
/** * aac_fib_map_free - free the fib objects * @dev: Adapter to free * * Free the PCI mappings and the memory allocated for FIB blocks * on this adapter.
*/
for (i = 0, fibptr = &dev->fibs[i];
i < (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB);
i++, fibptr++) { if ((dev->max_msix == 1) ||
(i > ((dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB - 1)
- dev->vector_cap))) {
fibptr->vector_no = 0;
} else {
fibptr->vector_no = vector;
vector++; if (vector == dev->max_msix)
vector = 1;
}
}
}
/** * aac_fib_setup - setup the fibs * @dev: Adapter to set up * * Allocate the PCI space for the fibs, map it and then initialise the * fib area, the unmapped fib data and also the free list
*/
int aac_fib_setup(struct aac_dev * dev)
{ struct fib *fibptr; struct hw_fib *hw_fib;
dma_addr_t hw_fib_pa; int i;
u32 max_cmds;
/* *Assign vector numbers to fibs
*/
aac_fib_vector_assign(dev);
/* * Add the fib chain to the free list
*/
dev->fibs[dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB - 1].next = NULL; /* * Set 8 fibs aside for management tools
*/
dev->free_fib = &dev->fibs[dev->scsi_host_ptr->can_queue]; return 0;
}
/** * aac_fib_alloc_tag-allocate a fib using tags * @dev: Adapter to allocate the fib for * @scmd: SCSI command * * Allocate a fib from the adapter fib pool using tags * from the blk layer.
*/
fibptr = &dev->fibs[scsi_cmd_to_rq(scmd)->tag]; /* * Null out fields that depend on being zero at the start of * each I/O
*/
fibptr->hw_fib_va->header.XferState = 0;
fibptr->type = FSAFS_NTC_FIB_CONTEXT;
fibptr->callback_data = NULL;
fibptr->callback = NULL;
fibptr->flags = 0;
return fibptr;
}
/** * aac_fib_alloc - allocate a fib * @dev: Adapter to allocate the fib for * * Allocate a fib from the adapter fib pool. If the pool is empty we * return NULL.
*/
struct fib *aac_fib_alloc(struct aac_dev *dev)
{ struct fib * fibptr; unsignedlong flags;
spin_lock_irqsave(&dev->fib_lock, flags);
fibptr = dev->free_fib; if(!fibptr){
spin_unlock_irqrestore(&dev->fib_lock, flags); return fibptr;
}
dev->free_fib = fibptr->next;
spin_unlock_irqrestore(&dev->fib_lock, flags); /* * Set the proper node type code and node byte size
*/
fibptr->type = FSAFS_NTC_FIB_CONTEXT;
fibptr->size = sizeof(struct fib); /* * Null out fields that depend on being zero at the start of * each I/O
*/
fibptr->hw_fib_va->header.XferState = 0;
fibptr->flags = 0;
fibptr->callback = NULL;
fibptr->callback_data = NULL;
return fibptr;
}
/** * aac_fib_free - free a fib * @fibptr: fib to free up * * Frees up a fib and places it on the appropriate queue
*/
/** * fib_dealloc - deallocate a fib * @fibptr: fib to deallocate * * Will deallocate and return to the free pool the FIB pointed to by the * caller.
*/
/* * Commuication primitives define and support the queuing method we use to * support host to adapter commuication. All queue accesses happen through * these routines and are the only routines which have a knowledge of the * how these queues are implemented.
*/
/** * aac_get_entry - get a queue entry * @dev: Adapter * @qid: Queue Number * @entry: Entry return * @index: Index return * @nonotify: notification control * * With a priority the routine returns a queue entry if the queue has free entries. If the queue * is full(no free entries) than no entry is returned and the function returns 0 otherwise 1 is * returned.
*/
/* * All of the queues wrap when they reach the end, so we check * to see if they have reached the end and if they have we just * set the index back to zero. This is a wrap. You could or off * the high bits in all updates but this is a bit faster I think.
*/
q = &dev->queues->queue[qid];
idx = *index = le32_to_cpu(*(q->headers.producer)); /* Interrupt Moderation, only interrupt for first two entries */ if (idx != le32_to_cpu(*(q->headers.consumer))) { if (--idx == 0) { if (qid == AdapNormCmdQueue)
idx = ADAP_NORM_CMD_ENTRIES; else
idx = ADAP_NORM_RESP_ENTRIES;
} if (idx != le32_to_cpu(*(q->headers.consumer)))
*nonotify = 1;
}
if (qid == AdapNormCmdQueue) { if (*index >= ADAP_NORM_CMD_ENTRIES)
*index = 0; /* Wrap to front of the Producer Queue. */
} else { if (*index >= ADAP_NORM_RESP_ENTRIES)
*index = 0; /* Wrap to front of the Producer Queue. */
}
/** * aac_queue_get - get the next free QE * @dev: Adapter * @index: Returned index * @qid: Queue number * @hw_fib: Fib to associate with the queue entry * @wait: Wait if queue full * @fibptr: Driver fib object to go with fib * @nonotify: Don't notify the adapter * * Gets the next free QE off the requested priorty adapter command * queue and associates the Fib with the QE. The QE represented by * index is ready to insert on the queue when this routine returns * success.
*/
if (qid == AdapNormCmdQueue) { /* if no entries wait for some if caller wants to */ while (!aac_get_entry(dev, qid, &entry, index, nonotify)) {
printk(KERN_ERR "GetEntries failed\n");
} /* * Setup queue entry with a command, status and fib mapped
*/
entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size));
map = 1;
} else { while (!aac_get_entry(dev, qid, &entry, index, nonotify)) { /* if no entries wait for some if caller wants to */
} /* * Setup queue entry with command, status and fib mapped
*/
entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size));
entry->addr = hw_fib->header.SenderFibAddress; /* Restore adapters pointer to the FIB */
hw_fib->header.u.ReceiverFibAddress = hw_fib->header.SenderFibAddress; /* Let the adapter now where to find its data */
map = 0;
} /* * If MapFib is true than we need to map the Fib and put pointers * in the queue entry.
*/ if (map)
entry->addr = cpu_to_le32(fibptr->hw_fib_pa); return 0;
}
/* * Define the highest level of host to adapter communication routines. * These routines will support host to adapter FS commuication. These * routines have no knowledge of the commuication method used. This level * sends and receives FIBs. This level has no knowledge of how these FIBs * get passed back and forth.
*/
/** * aac_fib_send - send a fib to the adapter * @command: Command to send * @fibptr: The fib * @size: Size of fib data area * @priority: Priority of Fib * @wait: Async/sync select * @reply: True if a reply is wanted * @callback: Called with reply * @callback_data: Passed to callback * * Sends the requested FIB to the adapter and optionally will wait for a * response FIB. If the caller does not wish to wait for a response than * an event to wait on must be supplied. This event will be set when a * response FIB is received from the adapter.
*/
int aac_fib_send(u16 command, struct fib *fibptr, unsignedlong size, int priority, int wait, int reply, fib_callback callback, void *callback_data)
{ struct aac_dev * dev = fibptr->dev; struct hw_fib * hw_fib = fibptr->hw_fib_va; unsignedlong flags = 0; unsignedlong mflags = 0; unsignedlong sflags = 0;
if (!(hw_fib->header.XferState & cpu_to_le32(HostOwned))) return -EBUSY;
if (hw_fib->header.XferState & cpu_to_le32(AdapterProcessed)) return -EINVAL;
/* * There are 5 cases with the wait and response requested flags. * The only invalid cases are if the caller requests to wait and * does not request a response and if the caller does not want a * response and the Fib is not allocated from pool. If a response * is not requested the Fib will just be deallocaed by the DPC * routine when the response comes back from the adapter. No * further processing will be done besides deleting the Fib. We * will have a debug mode where the adapter can notify the host * it had a problem and the host can log that fact.
*/
fibptr->flags = 0; if (wait && !reply) { return -EINVAL;
} elseif (!wait && reply) {
hw_fib->header.XferState |= cpu_to_le32(Async | ResponseExpected);
FIB_COUNTER_INCREMENT(aac_config.AsyncSent);
} elseif (!wait && !reply) {
hw_fib->header.XferState |= cpu_to_le32(NoResponseExpected);
FIB_COUNTER_INCREMENT(aac_config.NoResponseSent);
} elseif (wait && reply) {
hw_fib->header.XferState |= cpu_to_le32(ResponseExpected);
FIB_COUNTER_INCREMENT(aac_config.NormalSent);
} /* * Map the fib into 32bits by using the fib number
*/
/* use the same shifted value for handle to be compatible * with the new native hba command handle
*/
hw_fib->header.Handle =
cpu_to_le32((((u32)(fibptr - dev->fibs)) << 2) + 1);
/* * Set FIB state to indicate where it came from and if we want a * response from the adapter. Also load the command from the * caller. * * Map the hw fib pointer as a 32bit value
*/
hw_fib->header.Command = cpu_to_le16(command);
hw_fib->header.XferState |= cpu_to_le32(SentFromHost); /* * Set the size of the Fib we want to send to the adapter
*/
hw_fib->header.Size = cpu_to_le16(sizeof(struct aac_fibhdr) + size); if (le16_to_cpu(hw_fib->header.Size) > le16_to_cpu(hw_fib->header.SenderSize)) { return -EMSGSIZE;
} /* * Get a queue entry connect the FIB to it and send an notify * the adapter a command is ready.
*/
hw_fib->header.XferState |= cpu_to_le32(NormalPriority);
/* * Fill in the Callback and CallbackContext if we are not * going to wait.
*/ if (!wait) {
fibptr->callback = callback;
fibptr->callback_data = callback_data;
fibptr->flags = FIB_CONTEXT_FLAG;
}
fibptr->done = 0;
FIB_COUNTER_INCREMENT(aac_config.FibsSent);
dprintk((KERN_DEBUG "Fib contents:.\n"));
dprintk((KERN_DEBUG " Command = %d.\n", le32_to_cpu(hw_fib->header.Command)));
dprintk((KERN_DEBUG " SubCommand = %d.\n", le32_to_cpu(((struct aac_query_mount *)fib_data(fibptr))->command)));
dprintk((KERN_DEBUG " XferState = %x.\n", le32_to_cpu(hw_fib->header.XferState)));
dprintk((KERN_DEBUG " hw_fib va being sent=%p\n",fibptr->hw_fib_va));
dprintk((KERN_DEBUG " hw_fib pa being sent=%lx\n",(ulong)fibptr->hw_fib_pa));
dprintk((KERN_DEBUG " fib being sent=%p\n",fibptr));
if (aac_adapter_deliver(fibptr) != 0) {
printk(KERN_ERR "aac_fib_send: returned -EBUSY\n"); if (wait) {
spin_unlock_irqrestore(&fibptr->event_lock, flags);
spin_lock_irqsave(&dev->manage_lock, mflags);
dev->management_fib_count--;
spin_unlock_irqrestore(&dev->manage_lock, mflags);
} return -EBUSY;
}
/* * If the caller wanted us to wait for response wait now.
*/
if (wait) {
spin_unlock_irqrestore(&fibptr->event_lock, flags); /* Only set for first known interruptable command */ if (wait < 0) { /* * *VERY* Dangerous to time out a command, the * assumption is made that we have no hope of * functioning because an interrupt routing or other * hardware failure has occurred.
*/ unsignedlong timeout = jiffies + (180 * HZ); /* 3 minutes */ while (!try_wait_for_completion(&fibptr->event_wait)) { int blink; if (time_is_before_eq_jiffies(timeout)) { struct aac_queue * q = &dev->queues->queue[AdapNormCmdQueue];
atomic_dec(&q->numpending); if (wait == -1) {
printk(KERN_ERR "aacraid: aac_fib_send: first asynchronous command timed out.\n" "Usually a result of a PCI interrupt routing problem;\n" "update mother board BIOS or consider utilizing one of\n" "the SAFE mode kernel options (acpi, apic etc)\n");
} return -ETIMEDOUT;
}
if (unlikely(aac_pci_offline(dev))) return -EFAULT;
if ((blink = aac_adapter_check_health(dev)) > 0) { if (wait == -1) {
printk(KERN_ERR "aacraid: aac_fib_send: adapter blinkLED 0x%x.\n" "Usually a result of a serious unrecoverable hardware problem\n",
blink);
} return -EFAULT;
} /* * Allow other processes / CPUS to use core
*/
schedule();
}
} elseif (wait_for_completion_interruptible(&fibptr->event_wait)) { /* Do nothing ... satisfy
* wait_for_completion_interruptible must_check */
}
if(unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT)) return -ETIMEDOUT; return 0;
} /* * If the user does not want a response than return success otherwise * return pending
*/ if (reply) return -EINPROGRESS; else return 0;
}
if (unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT)) return -ETIMEDOUT;
return 0;
}
return -EINPROGRESS;
}
/** * aac_consumer_get - get the top of the queue * @dev: Adapter * @q: Queue * @entry: Return entry * * Will return a pointer to the entry on the top of the queue requested that * we are a consumer of, and return the address of the queue entry. It does * not change the state of the queue.
*/
int aac_consumer_get(struct aac_dev * dev, struct aac_queue * q, struct aac_entry **entry)
{
u32 index; int status; if (le32_to_cpu(*q->headers.producer) == le32_to_cpu(*q->headers.consumer)) {
status = 0;
} else { /* * The consumer index must be wrapped if we have reached * the end of the queue, else we just use the entry * pointed to by the header index
*/ if (le32_to_cpu(*q->headers.consumer) >= q->entries)
index = 0; else
index = le32_to_cpu(*q->headers.consumer);
*entry = q->base + index;
status = 1;
} return(status);
}
/** * aac_consumer_free - free consumer entry * @dev: Adapter * @q: Queue * @qid: Queue ident * * Frees up the current top of the queue we are a consumer of. If the * queue was full notify the producer that the queue is no longer full.
*/
if ((le32_to_cpu(*q->headers.producer)+1) == le32_to_cpu(*q->headers.consumer))
wasfull = 1;
if (le32_to_cpu(*q->headers.consumer) >= q->entries)
*q->headers.consumer = cpu_to_le32(1); else
le32_add_cpu(q->headers.consumer, 1);
if (wasfull) { switch (qid) {
case HostNormCmdQueue:
notify = HostNormCmdNotFull; break; case HostNormRespQueue:
notify = HostNormRespNotFull; break; default:
BUG(); return;
}
aac_adapter_notify(dev, notify);
}
}
/** * aac_fib_adapter_complete - complete adapter issued fib * @fibptr: fib to complete * @size: size of fib * * Will do all necessary work to complete a FIB that was sent from * the adapter.
*/
if (hw_fib->header.XferState == 0) { if (dev->comm_interface == AAC_COMM_MESSAGE)
kfree(hw_fib); return 0;
} /* * If we plan to do anything check the structure type first.
*/ if (hw_fib->header.StructType != FIB_MAGIC &&
hw_fib->header.StructType != FIB_MAGIC2 &&
hw_fib->header.StructType != FIB_MAGIC2_64) { if (dev->comm_interface == AAC_COMM_MESSAGE)
kfree(hw_fib); return -EINVAL;
} /* * This block handles the case where the adapter had sent us a * command and we have finished processing the command. We * call completeFib when we are done processing the command * and want to send a response back to the adapter. This will * send the completed cdb to the adapter.
*/ if (hw_fib->header.XferState & cpu_to_le32(SentFromAdapter)) { if (dev->comm_interface == AAC_COMM_MESSAGE) {
kfree (hw_fib);
} else {
u32 index;
hw_fib->header.XferState |= cpu_to_le32(HostProcessed); if (size) {
size += sizeof(struct aac_fibhdr); if (size > le16_to_cpu(hw_fib->header.SenderSize)) return -EMSGSIZE;
hw_fib->header.Size = cpu_to_le16(size);
}
q = &dev->queues->queue[AdapNormRespQueue];
spin_lock_irqsave(q->lock, qflags);
aac_queue_get(dev, &index, AdapNormRespQueue, hw_fib, 1, NULL, &nointr);
*(q->headers.producer) = cpu_to_le32(index + 1);
spin_unlock_irqrestore(q->lock, qflags); if (!(nointr & (int)aac_config.irq_mod))
aac_adapter_notify(dev, AdapNormRespQueue);
}
} else {
printk(KERN_WARNING "aac_fib_adapter_complete: " "Unknown xferstate detected.\n");
BUG();
} return 0;
}
/** * aac_fib_complete - fib completion handler * @fibptr: FIB to complete * * Will do all necessary work to complete a FIB.
*/
if (fibptr->flags & FIB_CONTEXT_FLAG_NATIVE_HBA) {
fib_dealloc(fibptr); return 0;
}
/* * Check for a fib which has already been completed or with a * status wait timeout
*/
if (hw_fib->header.XferState == 0 || fibptr->done == 2) return 0; /* * If we plan to do anything check the structure type first.
*/
if (hw_fib->header.StructType != FIB_MAGIC &&
hw_fib->header.StructType != FIB_MAGIC2 &&
hw_fib->header.StructType != FIB_MAGIC2_64) return -EINVAL; /* * This block completes a cdb which orginated on the host and we * just need to deallocate the cdb or reinit it. At this point the * command is complete that we had sent to the adapter and this * cdb could be reused.
*/
if((hw_fib->header.XferState & cpu_to_le32(SentFromHost)) &&
(hw_fib->header.XferState & cpu_to_le32(AdapterProcessed)))
{
fib_dealloc(fibptr);
} elseif(hw_fib->header.XferState & cpu_to_le32(SentFromHost))
{ /* * This handles the case when the host has aborted the I/O * to the adapter because the adapter is not responding
*/
fib_dealloc(fibptr);
} elseif(hw_fib->header.XferState & cpu_to_le32(HostOwned)) {
fib_dealloc(fibptr);
} else {
BUG();
} return 0;
}
/** * aac_printf - handle printf from firmware * @dev: Adapter * @val: Message info * * Print a message passed to us by the controller firmware on the * Adaptec board
*/
void aac_printf(struct aac_dev *dev, u32 val)
{ char *cp = dev->printfbuf; if (dev->printf_enabled)
{ int length = val & 0xffff; int level = (val >> 16) & 0xffff;
/* * The size of the printfbuf is set in port.c * There is no variable or define for it
*/ if (length > 255)
length = 255; if (cp[length] != 0)
cp[length] = 0; if (level == LOG_AAC_HIGH_ERROR)
printk(KERN_WARNING "%s:%s", dev->name, cp); else
printk(KERN_INFO "%s:%s", dev->name, cp);
}
memset(cp, 0, 256);
}
staticvoid aac_handle_aif_bu(struct aac_dev *dev, struct aac_aifcmd *aifcmd)
{ switch (aac_aif_data(aifcmd, 1)) { case AifBuCacheDataLoss: if (aac_aif_data(aifcmd, 2))
dev_info(&dev->pdev->dev, "Backup unit had cache data loss - [%d]\n",
aac_aif_data(aifcmd, 2)); else
dev_info(&dev->pdev->dev, "Backup Unit had cache data loss\n"); break; case AifBuCacheDataRecover: if (aac_aif_data(aifcmd, 2))
dev_info(&dev->pdev->dev, "DDR cache data recovered successfully - [%d]\n",
aac_aif_data(aifcmd, 2)); else
dev_info(&dev->pdev->dev, "DDR cache data recovered successfully\n"); break;
}
}
#define AIF_SNIFF_TIMEOUT (500*HZ) /** * aac_handle_aif - Handle a message from the firmware * @dev: Which adapter this fib is from * @fibptr: Pointer to fibptr from adapter * * This routine handles a driver notify fib from the adapter and * dispatches it to the appropriate routine for handling.
*/ staticvoid aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
{ struct hw_fib * hw_fib = fibptr->hw_fib_va; struct aac_aifcmd * aifcmd = (struct aac_aifcmd *)hw_fib->data;
u32 channel, id, lun, container; struct scsi_device *device; enum {
NOTHING, DELETE,
ADD,
CHANGE
} device_config_needed = NOTHING;
/* Sniff for container changes */
if (!dev || !dev->fsa_dev) return;
container = channel = id = lun = (u32)-1;
/* * We have set this up to try and minimize the number of * re-configures that take place. As a result of this when * certain AIF's come in we will set a flag waiting for another * type of AIF before setting the re-config flag.
*/ switch (le32_to_cpu(aifcmd->command)) { case AifCmdDriverNotify: switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) { case AifRawDeviceRemove:
container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); if ((container >> 28)) {
container = (u32)-1; break;
}
channel = (container >> 24) & 0xF; if (channel >= dev->maximum_num_channels) {
container = (u32)-1; break;
}
id = container & 0xFFFF; if (id >= dev->maximum_num_physicals) {
container = (u32)-1; break;
}
lun = (container >> 16) & 0xFF;
container = (u32)-1;
channel = aac_phys_to_logical(channel);
device_config_needed = DELETE; break;
/* * Morph or Expand complete
*/ case AifDenMorphComplete: case AifDenVolumeExtendComplete:
container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); if (container >= dev->maximum_num_containers) break;
/* * Find the scsi_device associated with the SCSI * address. Make sure we have the right array, and if * so set the flag to initiate a new re-config once we * see an AifEnConfigChange AIF come through.
*/
/* * If we are waiting on something and this happens to be * that thing then set the re-configure flag.
*/ if (container != (u32)-1) { if (container >= dev->maximum_num_containers) break; if ((dev->fsa_dev[container].config_waiting_on ==
le32_to_cpu(*(__le32 *)aifcmd->data)) &&
time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
dev->fsa_dev[container].config_waiting_on = 0;
} elsefor (container = 0;
container < dev->maximum_num_containers; ++container) { if ((dev->fsa_dev[container].config_waiting_on ==
le32_to_cpu(*(__le32 *)aifcmd->data)) &&
time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
dev->fsa_dev[container].config_waiting_on = 0;
} break;
case AifCmdEventNotify: switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) { case AifEnBatteryEvent:
dev->cache_protected =
(((__le32 *)aifcmd->data)[1] == cpu_to_le32(3)); break; /* * Add an Array.
*/ case AifEnAddContainer:
container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); if (container >= dev->maximum_num_containers) break;
dev->fsa_dev[container].config_needed = ADD;
dev->fsa_dev[container].config_waiting_on =
AifEnConfigChange;
dev->fsa_dev[container].config_waiting_stamp = jiffies; break;
/* * Delete an Array.
*/ case AifEnDeleteContainer:
container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); if (container >= dev->maximum_num_containers) break;
dev->fsa_dev[container].config_needed = DELETE;
dev->fsa_dev[container].config_waiting_on =
AifEnConfigChange;
dev->fsa_dev[container].config_waiting_stamp = jiffies; break;
/* * Container change detected. If we currently are not * waiting on something else, setup to wait on a Config Change.
*/ case AifEnContainerChange:
container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); if (container >= dev->maximum_num_containers) break; if (dev->fsa_dev[container].config_waiting_on &&
time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) break;
dev->fsa_dev[container].config_needed = CHANGE;
dev->fsa_dev[container].config_waiting_on =
AifEnConfigChange;
dev->fsa_dev[container].config_waiting_stamp = jiffies; break;
case AifEnEnclosureManagement: /* * If in JBOD mode, automatic exposure of new * physical target to be suppressed until configured.
*/ if (dev->jbod) break; switch (le32_to_cpu(((__le32 *)aifcmd->data)[3])) { case EM_DRIVE_INSERTION: case EM_DRIVE_REMOVAL: case EM_SES_DRIVE_INSERTION: case EM_SES_DRIVE_REMOVAL:
container = le32_to_cpu(
((__le32 *)aifcmd->data)[2]); if ((container >> 28)) {
container = (u32)-1; break;
}
channel = (container >> 24) & 0xF; if (channel >= dev->maximum_num_channels) {
container = (u32)-1; break;
}
id = container & 0xFFFF;
lun = (container >> 16) & 0xFF;
container = (u32)-1; if (id >= dev->maximum_num_physicals) { /* legacy dev_t ? */ if ((0x2000 <= id) || lun || channel ||
((channel = (id >> 7) & 0x3F) >=
dev->maximum_num_channels)) break;
lun = (id >> 4) & 7;
id &= 0xF;
}
channel = aac_phys_to_logical(channel);
device_config_needed =
((((__le32 *)aifcmd->data)[3]
== cpu_to_le32(EM_DRIVE_INSERTION)) ||
(((__le32 *)aifcmd->data)[3]
== cpu_to_le32(EM_SES_DRIVE_INSERTION))) ?
ADD : DELETE; break;
} break; case AifBuManagerEvent:
aac_handle_aif_bu(dev, aifcmd); break;
}
/* * If we are waiting on something and this happens to be * that thing then set the re-configure flag.
*/ if (container != (u32)-1) { if (container >= dev->maximum_num_containers) break; if ((dev->fsa_dev[container].config_waiting_on ==
le32_to_cpu(*(__le32 *)aifcmd->data)) &&
time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
dev->fsa_dev[container].config_waiting_on = 0;
} elsefor (container = 0;
container < dev->maximum_num_containers; ++container) { if ((dev->fsa_dev[container].config_waiting_on ==
le32_to_cpu(*(__le32 *)aifcmd->data)) &&
time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
dev->fsa_dev[container].config_waiting_on = 0;
} break;
case AifCmdJobProgress: /* * These are job progress AIF's. When a Clear is being * done on a container it is initially created then hidden from * the OS. When the clear completes we don't get a config * change so we monitor the job status complete on a clear then * wait for a container change.
*/
if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) &&
(((__le32 *)aifcmd->data)[6] == ((__le32 *)aifcmd->data)[5] ||
((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsSuccess))) { for (container = 0;
container < dev->maximum_num_containers;
++container) { /* * Stomp on all config sequencing for all * containers?
*/
dev->fsa_dev[container].config_waiting_on =
AifEnContainerChange;
dev->fsa_dev[container].config_needed = ADD;
dev->fsa_dev[container].config_waiting_stamp =
jiffies;
}
} if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) &&
((__le32 *)aifcmd->data)[6] == 0 &&
((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsRunning)) { for (container = 0;
container < dev->maximum_num_containers;
++container) { /* * Stomp on all config sequencing for all * containers?
*/
dev->fsa_dev[container].config_waiting_on =
AifEnContainerChange;
dev->fsa_dev[container].config_needed = DELETE;
dev->fsa_dev[container].config_waiting_stamp =
jiffies;
}
} break;
}
/* * If we decided that a re-configuration needs to be done, * schedule it here on the way out the door, please close the door * behind you.
*/
/* * Find the scsi_device associated with the SCSI address, * and mark it as changed, invalidating the cache. This deals * with changes to existing device IDs.
*/
if (!dev || !dev->scsi_host_ptr) return; /* * force reload of disk info via aac_probe_container
*/ if ((channel == CONTAINER_CHANNEL) &&
(device_config_needed != NOTHING)) { if (dev->fsa_dev[container].valid == 1)
dev->fsa_dev[container].valid = 2;
aac_probe_container(dev, container);
}
device = scsi_device_lookup(dev->scsi_host_ptr, channel, id, lun); if (device) { switch (device_config_needed) { caseDELETE: #if (defined(AAC_DEBUG_INSTRUMENT_AIF_DELETE))
scsi_remove_device(device); #else if (scsi_device_online(device)) {
scsi_device_set_state(device, SDEV_OFFLINE);
sdev_printk(KERN_INFO, device, "Device offlined - %s\n",
(channel == CONTAINER_CHANNEL) ? "array deleted" : "enclosure services event");
} #endif break; case ADD: if (!scsi_device_online(device)) {
sdev_printk(KERN_INFO, device, "Device online - %s\n",
(channel == CONTAINER_CHANNEL) ? "array created" : "enclosure services event");
scsi_device_set_state(device, SDEV_RUNNING);
}
fallthrough; case CHANGE: if ((channel == CONTAINER_CHANNEL)
&& (!dev->fsa_dev[container].valid)) { #if (defined(AAC_DEBUG_INSTRUMENT_AIF_DELETE))
scsi_remove_device(device); #else if (!scsi_device_online(device)) break;
scsi_device_set_state(device, SDEV_OFFLINE);
sdev_printk(KERN_INFO, device, "Device offlined - %s\n", "array failed"); #endif break;
}
scsi_rescan_device(device); break;
staticint _aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type)
{ int index, quirks; int retval; struct Scsi_Host *host = aac->scsi_host_ptr; int jafo = 0; int bled;
u64 dmamask; int num_of_fibs = 0;
/* * Assumptions: * - host is locked, unless called by the aacraid thread. * (a matter of convenience, due to legacy issues surrounding * eh_host_adapter_reset). * - in_reset is asserted, so no new i/o is getting to the * card. * - The card is dead, or will be very shortly ;-/ so no new * commands are completing in the interrupt service.
*/
aac_adapter_disable_int(aac); if (aac->thread && aac->thread->pid != current->pid) {
spin_unlock_irq(host->host_lock);
kthread_stop(aac->thread);
aac->thread = NULL;
jafo = 1;
}
/* * If a positive health, means in a known DEAD PANIC * state and the adapter could be reset to `try again'.
*/
bled = forced ? 0 : aac_adapter_check_health(aac);
retval = aac_adapter_restart(aac, bled, reset_type);
if (retval) goto out;
/* * Loop through the fibs, close the synchronous FIBS
*/
retval = 1;
num_of_fibs = aac->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB; for (index = 0; index < num_of_fibs; index++) {
if (is_response_expected
|| fib->flags & FIB_CONTEXT_FLAG_WAIT) { unsignedlong flagv;
spin_lock_irqsave(&fib->event_lock, flagv);
complete(&fib->event_wait);
spin_unlock_irqrestore(&fib->event_lock, flagv);
schedule();
retval = 0;
}
} /* Give some extra time for ioctls to complete. */ if (retval == 0)
ssleep(2);
index = aac->cardtype;
/* * Re-initialize the adapter, first free resources, then carefully * apply the initialization sequence to come back again. Only risk * is a change in Firmware dropping cache, it is assumed the caller * will ensure that i/o is queisced and the card is flushed in that * case.
*/
aac_free_irq(aac);
aac_fib_map_free(aac);
dma_free_coherent(&aac->pdev->dev, aac->comm_size, aac->comm_addr,
aac->comm_phys);
aac_adapter_ioremap(aac, 0);
aac->comm_addr = NULL;
aac->comm_phys = 0;
kfree(aac->queues);
aac->queues = NULL;
kfree(aac->fsa_dev);
aac->fsa_dev = NULL;
if ((retval = (*(aac_get_driver_ident(index)->init))(aac))) goto out;
if (jafo) {
aac->thread = kthread_run(aac_command_thread, aac, "%s",
aac->name); if (IS_ERR(aac->thread)) {
retval = PTR_ERR(aac->thread);
aac->thread = NULL; goto out;
}
}
(void)aac_get_adapter_info(aac); if ((quirks & AAC_QUIRK_34SG) && (host->sg_tablesize > 34)) {
host->sg_tablesize = 34;
host->max_sectors = (host->sg_tablesize * 8) + 112;
} if ((quirks & AAC_QUIRK_17SG) && (host->sg_tablesize > 17)) {
host->sg_tablesize = 17;
host->max_sectors = (host->sg_tablesize * 8) + 112;
}
aac_get_config_status(aac, 1);
aac_get_containers(aac); /* * This is where the assumption that the Adapter is quiesced * is important.
*/
scsi_host_complete_all_commands(host, DID_RESET);
retval = 0;
out:
aac->in_reset = 0;
/* * Issue bus rescan to catch any configuration that might have * occurred
*/ if (!retval && !is_kdump_kernel()) {
dev_info(&aac->pdev->dev, "Scheduling bus rescan\n");
aac_schedule_bus_scan(aac);
}
if (jafo) {
spin_lock_irq(host->host_lock);
} return retval;
}
int aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type)
{ unsignedlong flagv = 0; int retval, unblock_retval; struct Scsi_Host *host = aac->scsi_host_ptr; int bled;
if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0) return -EBUSY;
/* * Wait for all commands to complete to this specific * target (block maximum 60 seconds). Although not necessary, * it does make us a good storage citizen.
*/
scsi_host_block(host);
if (status >= 0)
aac_fib_complete(fibctx); /* FIB should be freed only after getting
* the response from the F/W */ if (status != -ERESTARTSYS)
aac_fib_free(fibctx);
}
}
return retval;
}
staticinlineint is_safw_raid_volume(struct aac_dev *aac, int bus, int target)
{ return bus == CONTAINER_CHANNEL && target < aac->maximum_num_containers;
}
staticstruct scsi_device *aac_lookup_safw_scsi_device(struct aac_dev *dev, int bus, int target)
{ if (bus != CONTAINER_CHANNEL)
bus = aac_phys_to_logical(bus);
/** * aac_handle_sa_aif - Handle a message from the firmware * @dev: Which adapter this fib is from * @fibptr: Pointer to fibptr from adapter * * This routine handles a driver notify fib from the adapter and * dispatches it to the appropriate routine for handling.
*/ staticvoid aac_handle_sa_aif(struct aac_dev *dev, struct fib *fibptr)
{ int i;
u32 events = 0;
switch (events) { case SA_AIF_HOTPLUG: case SA_AIF_HARDWARE: case SA_AIF_PDEV_CHANGE: case SA_AIF_LDEV_CHANGE: case SA_AIF_BPCFG_CHANGE:
aac_scan_host(dev);
break;
case SA_AIF_BPSTAT_CHANGE: /* currently do nothing */ break;
}
for (i = 1; i <= 10; ++i) {
events = src_readl(dev, MUnit.IDR); if (events & (1<<23)) {
pr_warn(" AIF not cleared by firmware - %d/%d)\n",
i, 10);
ssleep(1);
}
}
}
/* * Warning: no sleep allowed while * holding spinlock. We take the estimate * and pre-allocate a set of fibs outside the * lock.
*/
num = le32_to_cpu(dev->init->r7.adapter_fibs_size)
/ sizeof(struct hw_fib); /* some extra */
spin_lock_irqsave(&dev->fib_lock, flagv);
entry = dev->fib_list.next; while (entry != &dev->fib_list) {
entry = entry->next;
++num;
}
spin_unlock_irqrestore(&dev->fib_lock, flagv);
time_now = jiffies/HZ;
spin_lock_irqsave(&dev->fib_lock, flagv);
entry = dev->fib_list.next; /* * For each Context that is on the * fibctxList, make a copy of the * fib, and then set the event to wake up the * thread that is waiting for it.
*/
hw_fib_p = hw_fib_pool;
fib_p = fib_pool; while (entry != &dev->fib_list) { /* * Extract the fibctx
*/
fibctx = list_entry(entry, struct aac_fib_context,
next); /* * Check if the queue is getting * backlogged
*/ if (fibctx->count > 20) { /* * It's *not* jiffies folks, * but jiffies / HZ so do not * panic ...
*/
time_last = fibctx->jiffies; /* * Has it been > 2 minutes * since the last read off * the queue?
*/ if ((time_now - time_last) > aif_timeout) {
entry = entry->next;
aac_close_fib_context(dev, fibctx); continue;
}
} /* * Warning: no sleep allowed while * holding spinlock
*/ if (hw_fib_p >= &hw_fib_pool[num]) {
pr_warn("aifd: didn't allocate NewFib\n");
entry = entry->next; continue;
}
hw_newfib = *hw_fib_p;
*(hw_fib_p++) = NULL;
newfib = *fib_p;
*(fib_p++) = NULL; /* * Make the copy of the FIB
*/
memcpy(hw_newfib, hw_fib, sizeof(struct hw_fib));
memcpy(newfib, fib, sizeof(struct fib));
newfib->hw_fib_va = hw_newfib; /* * Put the FIB onto the * fibctx's fibs
*/
list_add_tail(&newfib->fiblink, &fibctx->fib_list);
fibctx->count++; /* * Set the event to wake up the * thread that is waiting.
*/
complete(&fibctx->completion);
entry = entry->next;
} /* * Set the status of this FIB
*/
*(__le32 *)hw_fib->data = cpu_to_le32(ST_OK);
aac_fib_adapter_complete(fib, sizeof(u32));
spin_unlock_irqrestore(&dev->fib_lock, flagv);
fib = list_entry(entry, struct fib, fiblink);
hw_fib = fib->hw_fib_va; if (dev->sa_firmware) { /* Thor AIF */
aac_handle_sa_aif(dev, fib);
aac_fib_adapter_complete(fib, (u16)sizeof(u32)); goto free_fib;
} /* * We will process the FIB here or pass it to a * worker thread that is TBD. We Really can't * do anything at this point since we don't have * anything defined for this thread to do.
*/
memset(fib, 0, sizeof(struct fib));
fib->type = FSAFS_NTC_FIB_CONTEXT;
fib->size = sizeof(struct fib);
fib->hw_fib_va = hw_fib;
fib->data = hw_fib->data;
fib->dev = dev; /* * We only handle AifRequest fibs from the adapter.
*/
aifcmd = (struct aac_aifcmd *) hw_fib->data; if (aifcmd->command == cpu_to_le32(AifCmdDriverNotify)) { /* Handle Driver Notify Events */
aac_handle_aif(dev, fib);
*(__le32 *)hw_fib->data = cpu_to_le32(ST_OK);
aac_fib_adapter_complete(fib, (u16)sizeof(u32)); goto free_fib;
} /* * The u32 here is important and intended. We are using * 32bit wrapping time to fit the adapter field
*/
ret = aac_send_wellness_command(dev, wellness_str, datasize);
out: return ret;
}
staticint aac_send_hosttime(struct aac_dev *dev, struct timespec64 *now)
{ int ret = -ENOMEM; struct fib *fibptr;
__le32 *info;
fibptr = aac_fib_alloc(dev); if (!fibptr) goto out;
aac_fib_init(fibptr);
info = (__le32 *)fib_data(fibptr);
*info = cpu_to_le32(now->tv_sec); /* overflow in y2106 */
ret = aac_fib_send(SendHostTime, fibptr, sizeof(*info), FsaNormal,
1, 1, NULL, NULL);
/* * Do not set XferState to zero unless * receives a response from F/W
*/ if (ret >= 0)
aac_fib_complete(fibptr);
/* * FIB should be freed only after * getting the response from the F/W
*/ if (ret != -ERESTARTSYS)
aac_fib_free(fibptr);
out: return ret;
}
/** * aac_command_thread - command processing thread * @data: Adapter to monitor * * Waits on the commandready event in it's queue. When the event gets set * it will pull FIBs off it's queue. It will continue to pull FIBs off * until the queue is empty. When the queue is empty it will wait for * more FIBs.
*/
/* * We can only have one thread per adapter for AIF's.
*/ if (dev->aif_thread) return -EINVAL;
/* * Let the DPC know it has a place to send the AIF's to.
*/
dev->aif_thread = 1;
add_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait);
set_current_state(TASK_INTERRUPTIBLE);
dprintk ((KERN_INFO "aac_command_thread start\n")); while (1) {
/* Don't even try to talk to adapter if its sick */
ret = aac_adapter_check_health(dev); if (ret || !dev->queues) break;
next_check_jiffies = jiffies
+ ((long)(unsigned)check_interval)
* HZ;
ktime_get_real_ts64(&now);
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