diff options
Diffstat (limited to 'drivers/block')
48 files changed, 1311 insertions, 12863 deletions
diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c deleted file mode 100644 index 581312ac375f..000000000000 --- a/drivers/block/DAC960.c +++ /dev/null @@ -1,7229 +0,0 @@ -/* - - Linux Driver for Mylex DAC960/AcceleRAID/eXtremeRAID PCI RAID Controllers - - Copyright 1998-2001 by Leonard N. Zubkoff <lnz@dandelion.com> - Portions Copyright 2002 by Mylex (An IBM Business Unit) - - This program is free software; you may redistribute and/or modify it under - the terms of the GNU General Public License Version 2 as published by the - Free Software Foundation. - - This program is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY, without even the implied warranty of MERCHANTABILITY - or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - for complete details. - -*/ - - -#define DAC960_DriverVersion "2.5.49" -#define DAC960_DriverDate "21 Aug 2007" - - -#include <linux/compiler.h> -#include <linux/module.h> -#include <linux/types.h> -#include <linux/miscdevice.h> -#include <linux/blkdev.h> -#include <linux/bio.h> -#include <linux/completion.h> -#include <linux/delay.h> -#include <linux/genhd.h> -#include <linux/hdreg.h> -#include <linux/blkpg.h> -#include <linux/dma-mapping.h> -#include <linux/interrupt.h> -#include <linux/ioport.h> -#include <linux/mm.h> -#include <linux/slab.h> -#include <linux/mutex.h> -#include <linux/proc_fs.h> -#include <linux/seq_file.h> -#include <linux/reboot.h> -#include <linux/spinlock.h> -#include <linux/timer.h> -#include <linux/pci.h> -#include <linux/init.h> -#include <linux/jiffies.h> -#include <linux/random.h> -#include <linux/scatterlist.h> -#include <asm/io.h> -#include <linux/uaccess.h> -#include "DAC960.h" - -#define DAC960_GAM_MINOR 252 - - -static DEFINE_MUTEX(DAC960_mutex); -static DAC960_Controller_T *DAC960_Controllers[DAC960_MaxControllers]; -static int DAC960_ControllerCount; -static struct proc_dir_entry *DAC960_ProcDirectoryEntry; - -static long disk_size(DAC960_Controller_T *p, int drive_nr) -{ - if (p->FirmwareType == DAC960_V1_Controller) { - if (drive_nr >= p->LogicalDriveCount) - return 0; - return p->V1.LogicalDriveInformation[drive_nr]. - LogicalDriveSize; - } else { - DAC960_V2_LogicalDeviceInfo_T *i = - p->V2.LogicalDeviceInformation[drive_nr]; - if (i == NULL) - return 0; - return i->ConfigurableDeviceSize; - } -} - -static int DAC960_open(struct block_device *bdev, fmode_t mode) -{ - struct gendisk *disk = bdev->bd_disk; - DAC960_Controller_T *p = disk->queue->queuedata; - int drive_nr = (long)disk->private_data; - int ret = -ENXIO; - - mutex_lock(&DAC960_mutex); - if (p->FirmwareType == DAC960_V1_Controller) { - if (p->V1.LogicalDriveInformation[drive_nr]. - LogicalDriveState == DAC960_V1_LogicalDrive_Offline) - goto out; - } else { - DAC960_V2_LogicalDeviceInfo_T *i = - p->V2.LogicalDeviceInformation[drive_nr]; - if (!i || i->LogicalDeviceState == DAC960_V2_LogicalDevice_Offline) - goto out; - } - - check_disk_change(bdev); - - if (!get_capacity(p->disks[drive_nr])) - goto out; - ret = 0; -out: - mutex_unlock(&DAC960_mutex); - return ret; -} - -static int DAC960_getgeo(struct block_device *bdev, struct hd_geometry *geo) -{ - struct gendisk *disk = bdev->bd_disk; - DAC960_Controller_T *p = disk->queue->queuedata; - int drive_nr = (long)disk->private_data; - - if (p->FirmwareType == DAC960_V1_Controller) { - geo->heads = p->V1.GeometryTranslationHeads; - geo->sectors = p->V1.GeometryTranslationSectors; - geo->cylinders = p->V1.LogicalDriveInformation[drive_nr]. - LogicalDriveSize / (geo->heads * geo->sectors); - } else { - DAC960_V2_LogicalDeviceInfo_T *i = - p->V2.LogicalDeviceInformation[drive_nr]; - switch (i->DriveGeometry) { - case DAC960_V2_Geometry_128_32: - geo->heads = 128; - geo->sectors = 32; - break; - case DAC960_V2_Geometry_255_63: - geo->heads = 255; - geo->sectors = 63; - break; - default: - DAC960_Error("Illegal Logical Device Geometry %d\n", - p, i->DriveGeometry); - return -EINVAL; - } - - geo->cylinders = i->ConfigurableDeviceSize / - (geo->heads * geo->sectors); - } - - return 0; -} - -static unsigned int DAC960_check_events(struct gendisk *disk, - unsigned int clearing) -{ - DAC960_Controller_T *p = disk->queue->queuedata; - int drive_nr = (long)disk->private_data; - - if (!p->LogicalDriveInitiallyAccessible[drive_nr]) - return DISK_EVENT_MEDIA_CHANGE; - return 0; -} - -static int DAC960_revalidate_disk(struct gendisk *disk) -{ - DAC960_Controller_T *p = disk->queue->queuedata; - int unit = (long)disk->private_data; - - set_capacity(disk, disk_size(p, unit)); - return 0; -} - -static const struct block_device_operations DAC960_BlockDeviceOperations = { - .owner = THIS_MODULE, - .open = DAC960_open, - .getgeo = DAC960_getgeo, - .check_events = DAC960_check_events, - .revalidate_disk = DAC960_revalidate_disk, -}; - - -/* - DAC960_AnnounceDriver announces the Driver Version and Date, Author's Name, - Copyright Notice, and Electronic Mail Address. -*/ - -static void DAC960_AnnounceDriver(DAC960_Controller_T *Controller) -{ - DAC960_Announce("***** DAC960 RAID Driver Version " - DAC960_DriverVersion " of " - DAC960_DriverDate " *****\n", Controller); - DAC960_Announce("Copyright 1998-2001 by Leonard N. Zubkoff " - "<lnz@dandelion.com>\n", Controller); -} - - -/* - DAC960_Failure prints a standardized error message, and then returns false. -*/ - -static bool DAC960_Failure(DAC960_Controller_T *Controller, - unsigned char *ErrorMessage) -{ - DAC960_Error("While configuring DAC960 PCI RAID Controller at\n", - Controller); - if (Controller->IO_Address == 0) - DAC960_Error("PCI Bus %d Device %d Function %d I/O Address N/A " - "PCI Address 0x%X\n", Controller, - Controller->Bus, Controller->Device, - Controller->Function, Controller->PCI_Address); - else DAC960_Error("PCI Bus %d Device %d Function %d I/O Address " - "0x%X PCI Address 0x%X\n", Controller, - Controller->Bus, Controller->Device, - Controller->Function, Controller->IO_Address, - Controller->PCI_Address); - DAC960_Error("%s FAILED - DETACHING\n", Controller, ErrorMessage); - return false; -} - -/* - init_dma_loaf() and slice_dma_loaf() are helper functions for - aggregating the dma-mapped memory for a well-known collection of - data structures that are of different lengths. - - These routines don't guarantee any alignment. The caller must - include any space needed for alignment in the sizes of the structures - that are passed in. - */ - -static bool init_dma_loaf(struct pci_dev *dev, struct dma_loaf *loaf, - size_t len) -{ - void *cpu_addr; - dma_addr_t dma_handle; - - cpu_addr = pci_alloc_consistent(dev, len, &dma_handle); - if (cpu_addr == NULL) - return false; - - loaf->cpu_free = loaf->cpu_base = cpu_addr; - loaf->dma_free =loaf->dma_base = dma_handle; - loaf->length = len; - memset(cpu_addr, 0, len); - return true; -} - -static void *slice_dma_loaf(struct dma_loaf *loaf, size_t len, - dma_addr_t *dma_handle) -{ - void *cpu_end = loaf->cpu_free + len; - void *cpu_addr = loaf->cpu_free; - - BUG_ON(cpu_end > loaf->cpu_base + loaf->length); - *dma_handle = loaf->dma_free; - loaf->cpu_free = cpu_end; - loaf->dma_free += len; - return cpu_addr; -} - -static void free_dma_loaf(struct pci_dev *dev, struct dma_loaf *loaf_handle) -{ - if (loaf_handle->cpu_base != NULL) - pci_free_consistent(dev, loaf_handle->length, - loaf_handle->cpu_base, loaf_handle->dma_base); -} - - -/* - DAC960_CreateAuxiliaryStructures allocates and initializes the auxiliary - data structures for Controller. It returns true on success and false on - failure. -*/ - -static bool DAC960_CreateAuxiliaryStructures(DAC960_Controller_T *Controller) -{ - int CommandAllocationLength, CommandAllocationGroupSize; - int CommandsRemaining = 0, CommandIdentifier, CommandGroupByteCount; - void *AllocationPointer = NULL; - void *ScatterGatherCPU = NULL; - dma_addr_t ScatterGatherDMA; - struct dma_pool *ScatterGatherPool; - void *RequestSenseCPU = NULL; - dma_addr_t RequestSenseDMA; - struct dma_pool *RequestSensePool = NULL; - - if (Controller->FirmwareType == DAC960_V1_Controller) - { - CommandAllocationLength = offsetof(DAC960_Command_T, V1.EndMarker); - CommandAllocationGroupSize = DAC960_V1_CommandAllocationGroupSize; - ScatterGatherPool = dma_pool_create("DAC960_V1_ScatterGather", - &Controller->PCIDevice->dev, - DAC960_V1_ScatterGatherLimit * sizeof(DAC960_V1_ScatterGatherSegment_T), - sizeof(DAC960_V1_ScatterGatherSegment_T), 0); - if (ScatterGatherPool == NULL) - return DAC960_Failure(Controller, - "AUXILIARY STRUCTURE CREATION (SG)"); - Controller->ScatterGatherPool = ScatterGatherPool; - } - else - { - CommandAllocationLength = offsetof(DAC960_Command_T, V2.EndMarker); - CommandAllocationGroupSize = DAC960_V2_CommandAllocationGroupSize; - ScatterGatherPool = dma_pool_create("DAC960_V2_ScatterGather", - &Controller->PCIDevice->dev, - DAC960_V2_ScatterGatherLimit * sizeof(DAC960_V2_ScatterGatherSegment_T), - sizeof(DAC960_V2_ScatterGatherSegment_T), 0); - if (ScatterGatherPool == NULL) - return DAC960_Failure(Controller, - "AUXILIARY STRUCTURE CREATION (SG)"); - RequestSensePool = dma_pool_create("DAC960_V2_RequestSense", - &Controller->PCIDevice->dev, sizeof(DAC960_SCSI_RequestSense_T), - sizeof(int), 0); - if (RequestSensePool == NULL) { - dma_pool_destroy(ScatterGatherPool); - return DAC960_Failure(Controller, - "AUXILIARY STRUCTURE CREATION (SG)"); - } - Controller->ScatterGatherPool = ScatterGatherPool; - Controller->V2.RequestSensePool = RequestSensePool; - } - Controller->CommandAllocationGroupSize = CommandAllocationGroupSize; - Controller->FreeCommands = NULL; - for (CommandIdentifier = 1; - CommandIdentifier <= Controller->DriverQueueDepth; - CommandIdentifier++) - { - DAC960_Command_T *Command; - if (--CommandsRemaining <= 0) - { - CommandsRemaining = - Controller->DriverQueueDepth - CommandIdentifier + 1; - if (CommandsRemaining > CommandAllocationGroupSize) - CommandsRemaining = CommandAllocationGroupSize; - CommandGroupByteCount = - CommandsRemaining * CommandAllocationLength; - AllocationPointer = kzalloc(CommandGroupByteCount, GFP_ATOMIC); - if (AllocationPointer == NULL) - return DAC960_Failure(Controller, - "AUXILIARY STRUCTURE CREATION"); - } - Command = (DAC960_Command_T *) AllocationPointer; - AllocationPointer += CommandAllocationLength; - Command->CommandIdentifier = CommandIdentifier; - Command->Controller = Controller; - Command->Next = Controller->FreeCommands; - Controller->FreeCommands = Command; - Controller->Commands[CommandIdentifier-1] = Command; - ScatterGatherCPU = dma_pool_alloc(ScatterGatherPool, GFP_ATOMIC, - &ScatterGatherDMA); - if (ScatterGatherCPU == NULL) - return DAC960_Failure(Controller, "AUXILIARY STRUCTURE CREATION"); - - if (RequestSensePool != NULL) { - RequestSenseCPU = dma_pool_alloc(RequestSensePool, GFP_ATOMIC, - &RequestSenseDMA); - if (RequestSenseCPU == NULL) { - dma_pool_free(ScatterGatherPool, ScatterGatherCPU, - ScatterGatherDMA); - return DAC960_Failure(Controller, - "AUXILIARY STRUCTURE CREATION"); - } - } - if (Controller->FirmwareType == DAC960_V1_Controller) { - Command->cmd_sglist = Command->V1.ScatterList; - Command->V1.ScatterGatherList = - (DAC960_V1_ScatterGatherSegment_T *)ScatterGatherCPU; - Command->V1.ScatterGatherListDMA = ScatterGatherDMA; - sg_init_table(Command->cmd_sglist, DAC960_V1_ScatterGatherLimit); - } else { - Command->cmd_sglist = Command->V2.ScatterList; - Command->V2.ScatterGatherList = - (DAC960_V2_ScatterGatherSegment_T *)ScatterGatherCPU; - Command->V2.ScatterGatherListDMA = ScatterGatherDMA; - Command->V2.RequestSense = - (DAC960_SCSI_RequestSense_T *)RequestSenseCPU; - Command->V2.RequestSenseDMA = RequestSenseDMA; - sg_init_table(Command->cmd_sglist, DAC960_V2_ScatterGatherLimit); - } - } - return true; -} - - -/* - DAC960_DestroyAuxiliaryStructures deallocates the auxiliary data - structures for Controller. -*/ - -static void DAC960_DestroyAuxiliaryStructures(DAC960_Controller_T *Controller) -{ - int i; - struct dma_pool *ScatterGatherPool = Controller->ScatterGatherPool; - struct dma_pool *RequestSensePool = NULL; - void *ScatterGatherCPU; - dma_addr_t ScatterGatherDMA; - void *RequestSenseCPU; - dma_addr_t RequestSenseDMA; - DAC960_Command_T *CommandGroup = NULL; - - - if (Controller->FirmwareType == DAC960_V2_Controller) - RequestSensePool = Controller->V2.RequestSensePool; - - Controller->FreeCommands = NULL; - for (i = 0; i < Controller->DriverQueueDepth; i++) - { - DAC960_Command_T *Command = Controller->Commands[i]; - - if (Command == NULL) - continue; - - if (Controller->FirmwareType == DAC960_V1_Controller) { - ScatterGatherCPU = (void *)Command->V1.ScatterGatherList; - ScatterGatherDMA = Command->V1.ScatterGatherListDMA; - RequestSenseCPU = NULL; - RequestSenseDMA = (dma_addr_t)0; - } else { - ScatterGatherCPU = (void *)Command->V2.ScatterGatherList; - ScatterGatherDMA = Command->V2.ScatterGatherListDMA; - RequestSenseCPU = (void *)Command->V2.RequestSense; - RequestSenseDMA = Command->V2.RequestSenseDMA; - } - if (ScatterGatherCPU != NULL) - dma_pool_free(ScatterGatherPool, ScatterGatherCPU, ScatterGatherDMA); - if (RequestSenseCPU != NULL) - dma_pool_free(RequestSensePool, RequestSenseCPU, RequestSenseDMA); - - if ((Command->CommandIdentifier - % Controller->CommandAllocationGroupSize) == 1) { - /* - * We can't free the group of commands until all of the - * request sense and scatter gather dma structures are free. - * Remember the beginning of the group, but don't free it - * until we've reached the beginning of the next group. - */ - kfree(CommandGroup); - CommandGroup = Command; - } - Controller->Commands[i] = NULL; - } - kfree(CommandGroup); - - if (Controller->CombinedStatusBuffer != NULL) - { - kfree(Controller->CombinedStatusBuffer); - Controller->CombinedStatusBuffer = NULL; - Controller->CurrentStatusBuffer = NULL; - } - - dma_pool_destroy(ScatterGatherPool); - if (Controller->FirmwareType == DAC960_V1_Controller) - return; - - dma_pool_destroy(RequestSensePool); - - for (i = 0; i < DAC960_MaxLogicalDrives; i++) { - kfree(Controller->V2.LogicalDeviceInformation[i]); - Controller->V2.LogicalDeviceInformation[i] = NULL; - } - - for (i = 0; i < DAC960_V2_MaxPhysicalDevices; i++) - { - kfree(Controller->V2.PhysicalDeviceInformation[i]); - Controller->V2.PhysicalDeviceInformation[i] = NULL; - kfree(Controller->V2.InquiryUnitSerialNumber[i]); - Controller->V2.InquiryUnitSerialNumber[i] = NULL; - } -} - - -/* - DAC960_V1_ClearCommand clears critical fields of Command for DAC960 V1 - Firmware Controllers. -*/ - -static inline void DAC960_V1_ClearCommand(DAC960_Command_T *Command) -{ - DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox; - memset(CommandMailbox, 0, sizeof(DAC960_V1_CommandMailbox_T)); - Command->V1.CommandStatus = 0; -} - - -/* - DAC960_V2_ClearCommand clears critical fields of Command for DAC960 V2 - Firmware Controllers. -*/ - -static inline void DAC960_V2_ClearCommand(DAC960_Command_T *Command) -{ - DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox; - memset(CommandMailbox, 0, sizeof(DAC960_V2_CommandMailbox_T)); - Command->V2.CommandStatus = 0; -} - - -/* - DAC960_AllocateCommand allocates a Command structure from Controller's - free list. During driver initialization, a special initialization command - has been placed on the free list to guarantee that command allocation can - never fail. -*/ - -static inline DAC960_Command_T *DAC960_AllocateCommand(DAC960_Controller_T - *Controller) -{ - DAC960_Command_T *Command = Controller->FreeCommands; - if (Command == NULL) return NULL; - Controller->FreeCommands = Command->Next; - Command->Next = NULL; - return Command; -} - - -/* - DAC960_DeallocateCommand deallocates Command, returning it to Controller's - free list. -*/ - -static inline void DAC960_DeallocateCommand(DAC960_Command_T *Command) -{ - DAC960_Controller_T *Controller = Command->Controller; - - Command->Request = NULL; - Command->Next = Controller->FreeCommands; - Controller->FreeCommands = Command; -} - - -/* - DAC960_WaitForCommand waits for a wake_up on Controller's Command Wait Queue. -*/ - -static void DAC960_WaitForCommand(DAC960_Controller_T *Controller) -{ - spin_unlock_irq(&Controller->queue_lock); - __wait_event(Controller->CommandWaitQueue, Controller->FreeCommands); - spin_lock_irq(&Controller->queue_lock); -} - -/* - DAC960_GEM_QueueCommand queues Command for DAC960 GEM Series Controllers. -*/ - -static void DAC960_GEM_QueueCommand(DAC960_Command_T *Command) -{ - DAC960_Controller_T *Controller = Command->Controller; - void __iomem *ControllerBaseAddress = Controller->BaseAddress; - DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox; - DAC960_V2_CommandMailbox_T *NextCommandMailbox = - Controller->V2.NextCommandMailbox; - - CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier; - DAC960_GEM_WriteCommandMailbox(NextCommandMailbox, CommandMailbox); - - if (Controller->V2.PreviousCommandMailbox1->Words[0] == 0 || - Controller->V2.PreviousCommandMailbox2->Words[0] == 0) - DAC960_GEM_MemoryMailboxNewCommand(ControllerBaseAddress); - - Controller->V2.PreviousCommandMailbox2 = - Controller->V2.PreviousCommandMailbox1; - Controller->V2.PreviousCommandMailbox1 = NextCommandMailbox; - - if (++NextCommandMailbox > Controller->V2.LastCommandMailbox) - NextCommandMailbox = Controller->V2.FirstCommandMailbox; - - Controller->V2.NextCommandMailbox = NextCommandMailbox; -} - -/* - DAC960_BA_QueueCommand queues Command for DAC960 BA Series Controllers. -*/ - -static void DAC960_BA_QueueCommand(DAC960_Command_T *Command) -{ - DAC960_Controller_T *Controller = Command->Controller; - void __iomem *ControllerBaseAddress = Controller->BaseAddress; - DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox; - DAC960_V2_CommandMailbox_T *NextCommandMailbox = - Controller->V2.NextCommandMailbox; - CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier; - DAC960_BA_WriteCommandMailbox(NextCommandMailbox, CommandMailbox); - if (Controller->V2.PreviousCommandMailbox1->Words[0] == 0 || - Controller->V2.PreviousCommandMailbox2->Words[0] == 0) - DAC960_BA_MemoryMailboxNewCommand(ControllerBaseAddress); - Controller->V2.PreviousCommandMailbox2 = - Controller->V2.PreviousCommandMailbox1; - Controller->V2.PreviousCommandMailbox1 = NextCommandMailbox; - if (++NextCommandMailbox > Controller->V2.LastCommandMailbox) - NextCommandMailbox = Controller->V2.FirstCommandMailbox; - Controller->V2.NextCommandMailbox = NextCommandMailbox; -} - - -/* - DAC960_LP_QueueCommand queues Command for DAC960 LP Series Controllers. -*/ - -static void DAC960_LP_QueueCommand(DAC960_Command_T *Command) -{ - DAC960_Controller_T *Controller = Command->Controller; - void __iomem *ControllerBaseAddress = Controller->BaseAddress; - DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox; - DAC960_V2_CommandMailbox_T *NextCommandMailbox = - Controller->V2.NextCommandMailbox; - CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier; - DAC960_LP_WriteCommandMailbox(NextCommandMailbox, CommandMailbox); - if (Controller->V2.PreviousCommandMailbox1->Words[0] == 0 || - Controller->V2.PreviousCommandMailbox2->Words[0] == 0) - DAC960_LP_MemoryMailboxNewCommand(ControllerBaseAddress); - Controller->V2.PreviousCommandMailbox2 = - Controller->V2.PreviousCommandMailbox1; - Controller->V2.PreviousCommandMailbox1 = NextCommandMailbox; - if (++NextCommandMailbox > Controller->V2.LastCommandMailbox) - NextCommandMailbox = Controller->V2.FirstCommandMailbox; - Controller->V2.NextCommandMailbox = NextCommandMailbox; -} - - -/* - DAC960_LA_QueueCommandDualMode queues Command for DAC960 LA Series - Controllers with Dual Mode Firmware. -*/ - -static void DAC960_LA_QueueCommandDualMode(DAC960_Command_T *Command) -{ - DAC960_Controller_T *Controller = Command->Controller; - void __iomem *ControllerBaseAddress = Controller->BaseAddress; - DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox; - DAC960_V1_CommandMailbox_T *NextCommandMailbox = - Controller->V1.NextCommandMailbox; - CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier; - DAC960_LA_WriteCommandMailbox(NextCommandMailbox, CommandMailbox); - if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 || - Controller->V1.PreviousCommandMailbox2->Words[0] == 0) - DAC960_LA_MemoryMailboxNewCommand(ControllerBaseAddress); - Controller->V1.PreviousCommandMailbox2 = - Controller->V1.PreviousCommandMailbox1; - Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox; - if (++NextCommandMailbox > Controller->V1.LastCommandMailbox) - NextCommandMailbox = Controller->V1.FirstCommandMailbox; - Controller->V1.NextCommandMailbox = NextCommandMailbox; -} - - -/* - DAC960_LA_QueueCommandSingleMode queues Command for DAC960 LA Series - Controllers with Single Mode Firmware. -*/ - -static void DAC960_LA_QueueCommandSingleMode(DAC960_Command_T *Command) -{ - DAC960_Controller_T *Controller = Command->Controller; - void __iomem *ControllerBaseAddress = Controller->BaseAddress; - DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox; - DAC960_V1_CommandMailbox_T *NextCommandMailbox = - Controller->V1.NextCommandMailbox; - CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier; - DAC960_LA_WriteCommandMailbox(NextCommandMailbox, CommandMailbox); - if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 || - Controller->V1.PreviousCommandMailbox2->Words[0] == 0) - DAC960_LA_HardwareMailboxNewCommand(ControllerBaseAddress); - Controller->V1.PreviousCommandMailbox2 = - Controller->V1.PreviousCommandMailbox1; - Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox; - if (++NextCommandMailbox > Controller->V1.LastCommandMailbox) - NextCommandMailbox = Controller->V1.FirstCommandMailbox;</ |