* 2 of the License, or (at your option) any later version.
*
* FILE : megaraid_mbox.c
- * Version : v2.20.4.6 (Mar 07 2005)
+ * Version : v2.20.5.1 (Nov 16 2006)
*
* Authors:
- * Atul Mukker <Atul.Mukker@lsil.com>
- * Sreenivas Bagalkote <Sreenivas.Bagalkote@lsil.com>
- * Manoj Jose <Manoj.Jose@lsil.com>
+ * Atul Mukker <Atul.Mukker@lsi.com>
+ * Sreenivas Bagalkote <Sreenivas.Bagalkote@lsi.com>
+ * Manoj Jose <Manoj.Jose@lsi.com>
+ * Seokmann Ju
*
* List of supported controllers
*
static int megaraid_probe_one(struct pci_dev*, const struct pci_device_id *);
static void megaraid_detach_one(struct pci_dev *);
-static void megaraid_mbox_shutdown(struct device *);
+static void megaraid_mbox_shutdown(struct pci_dev *);
static int megaraid_io_attach(adapter_t *);
static void megaraid_io_detach(adapter_t *);
static int megaraid_mbox_get_max_sg(adapter_t *);
static void megaraid_mbox_enum_raid_scsi(adapter_t *);
static void megaraid_mbox_flush_cache(adapter_t *);
+static int megaraid_mbox_fire_sync_cmd(adapter_t *);
static void megaraid_mbox_display_scb(adapter_t *, scb_t *);
static void megaraid_mbox_setup_device_map(adapter_t *);
static void megaraid_mbox_prepare_epthru(adapter_t *, scb_t *,
struct scsi_cmnd *);
-static irqreturn_t megaraid_isr(int, void *, struct pt_regs *);
+static irqreturn_t megaraid_isr(int, void *);
static void megaraid_mbox_dpc(unsigned long);
-static ssize_t megaraid_sysfs_show_app_hndl(struct class_device *, char *);
+static ssize_t megaraid_sysfs_show_app_hndl(struct device *, struct device_attribute *attr, char *);
static ssize_t megaraid_sysfs_show_ldnum(struct device *, struct device_attribute *attr, char *);
static int megaraid_cmm_register(adapter_t *);
-MODULE_AUTHOR("LSI Logic Corporation");
+MODULE_AUTHOR("megaraidlinux@lsi.com");
MODULE_DESCRIPTION("LSI Logic MegaRAID Mailbox Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(MEGARAID_VERSION);
* ### modules parameters for driver ###
*/
-/**
+/*
* Set to enable driver to expose unconfigured disk to kernel
*/
static int megaraid_expose_unconf_disks = 0;
MODULE_PARM_DESC(unconf_disks,
"Set to expose unconfigured disks to kernel (default=0)");
-/**
+/*
* driver wait time if the adapter's mailbox is busy
*/
static unsigned int max_mbox_busy_wait = MBOX_BUSY_WAIT;
MODULE_PARM_DESC(busy_wait,
"Max wait for mailbox in microseconds if busy (default=10)");
-/**
+/*
* number of sectors per IO command
*/
static unsigned int megaraid_max_sectors = MBOX_MAX_SECTORS;
MODULE_PARM_DESC(max_sectors,
"Maximum number of sectors per IO command (default=128)");
-/**
+/*
* number of commands per logical unit
*/
static unsigned int megaraid_cmd_per_lun = MBOX_DEF_CMD_PER_LUN;
"Maximum number of commands per logical unit (default=64)");
-/**
+/*
* Fast driver load option, skip scanning for physical devices during load.
* This would result in non-disk devices being skipped during driver load
* time. These can be later added though, using /proc/scsi/scsi
"Faster loading of the driver, skips physical devices! (default=0)");
-/**
+/*
* mraid_debug level - threshold for amount of information to be displayed by
* the driver. This level can be changed through modules parameters, ioctl or
* sysfs/proc interface. By default, print the announcement messages only.
{
PCI_VENDOR_ID_AMI,
PCI_DEVICE_ID_AMI_MEGARAID3,
- PCI_VENDOR_ID_DELL,
- PCI_SUBSYS_ID_PERC3_QC,
- },
- {
- PCI_VENDOR_ID_AMI,
- PCI_DEVICE_ID_AMI_MEGARAID3,
- PCI_VENDOR_ID_DELL,
- PCI_SUBSYS_ID_PERC3_DC,
- },
- {
- PCI_VENDOR_ID_AMI,
- PCI_DEVICE_ID_AMI_MEGARAID3,
- PCI_VENDOR_ID_DELL,
- PCI_SUBSYS_ID_PERC3_SC,
- },
- {
- PCI_VENDOR_ID_AMI,
- PCI_DEVICE_ID_AMI_MEGARAID3,
- PCI_VENDOR_ID_AMI,
- PCI_SUBSYS_ID_PERC3_SC,
- },
- {
- PCI_VENDOR_ID_AMI,
- PCI_DEVICE_ID_AMI_MEGARAID3,
- PCI_VENDOR_ID_AMI,
- PCI_SUBSYS_ID_PERC3_DC,
- },
- {
- PCI_VENDOR_ID_LSI_LOGIC,
- PCI_DEVICE_ID_MEGARAID_SCSI_320_0,
- PCI_VENDOR_ID_LSI_LOGIC,
- PCI_SUBSYS_ID_MEGARAID_SCSI_320_0,
- },
- {
- PCI_VENDOR_ID_LSI_LOGIC,
- PCI_DEVICE_ID_MEGARAID_SCSI_320_1,
- PCI_VENDOR_ID_LSI_LOGIC,
- PCI_SUBSYS_ID_MEGARAID_SCSI_320_1,
- },
- {
- PCI_VENDOR_ID_LSI_LOGIC,
- PCI_DEVICE_ID_MEGARAID_SCSI_320_2,
- PCI_VENDOR_ID_LSI_LOGIC,
- PCI_SUBSYS_ID_MEGARAID_SCSI_320_2,
- },
- {
- PCI_VENDOR_ID_LSI_LOGIC,
- PCI_DEVICE_ID_MEGARAID_I4_133_RAID,
- PCI_VENDOR_ID_LSI_LOGIC,
- PCI_SUBSYS_ID_MEGARAID_I4_133_RAID,
- },
- {
- PCI_VENDOR_ID_LSI_LOGIC,
- PCI_DEVICE_ID_MEGARAID_SATA_150_4,
- PCI_VENDOR_ID_LSI_LOGIC,
- PCI_SUBSYS_ID_MEGARAID_SATA_150_4,
+ PCI_ANY_ID,
+ PCI_ANY_ID,
},
{
PCI_VENDOR_ID_LSI_LOGIC,
- PCI_DEVICE_ID_MEGARAID_SATA_150_6,
- PCI_VENDOR_ID_LSI_LOGIC,
- PCI_SUBSYS_ID_MEGARAID_SATA_150_6,
+ PCI_DEVICE_ID_AMI_MEGARAID3,
+ PCI_ANY_ID,
+ PCI_ANY_ID,
},
{
PCI_VENDOR_ID_LSI_LOGIC,
PCI_ANY_ID,
PCI_ANY_ID,
},
- {
- PCI_VENDOR_ID_LSI_LOGIC,
- PCI_DEVICE_ID_INTEL_RAID_SRCS16,
- PCI_VENDOR_ID_INTEL,
- PCI_SUBSYS_ID_INTEL_RAID_SRCS16,
- },
- {
- PCI_VENDOR_ID_LSI_LOGIC,
- PCI_DEVICE_ID_INTEL_RAID_SRCU41L_LAKE_SHETEK,
- PCI_VENDOR_ID_INTEL,
- PCI_SUBSYS_ID_INTEL_RAID_SRCU41L_LAKE_SHETEK,
- },
{0} /* Terminating entry */
};
MODULE_DEVICE_TABLE(pci, pci_id_table_g);
-static struct pci_driver megaraid_pci_driver_g = {
+static struct pci_driver megaraid_pci_driver = {
.name = "megaraid",
.id_table = pci_id_table_g,
.probe = megaraid_probe_one,
.remove = __devexit_p(megaraid_detach_one),
- .driver = {
- .shutdown = megaraid_mbox_shutdown,
- }
+ .shutdown = megaraid_mbox_shutdown,
};
// definitions for the device attributes for exporting logical drive number
// for a scsi address (Host, Channel, Id, Lun)
-CLASS_DEVICE_ATTR(megaraid_mbox_app_hndl, S_IRUSR, megaraid_sysfs_show_app_hndl,
+DEVICE_ATTR(megaraid_mbox_app_hndl, S_IRUSR, megaraid_sysfs_show_app_hndl,
NULL);
// Host template initializer for megaraid mbox sysfs device attributes
-static struct class_device_attribute *megaraid_shost_attrs[] = {
- &class_device_attr_megaraid_mbox_app_hndl,
+static struct device_attribute *megaraid_shost_attrs[] = {
+ &dev_attr_megaraid_mbox_app_hndl,
NULL,
};
NULL,
};
+/**
+ * megaraid_change_queue_depth - Change the device's queue depth
+ * @sdev: scsi device struct
+ * @qdepth: depth to set
+ *
+ * Return value:
+ * actual depth set
+ */
+static int megaraid_change_queue_depth(struct scsi_device *sdev, int qdepth)
+{
+ if (qdepth > MBOX_MAX_SCSI_CMDS)
+ qdepth = MBOX_MAX_SCSI_CMDS;
+ scsi_adjust_queue_depth(sdev, 0, qdepth);
+ return sdev->queue_depth;
+}
/*
* Scsi host template for megaraid unified driver
.eh_device_reset_handler = megaraid_reset_handler,
.eh_bus_reset_handler = megaraid_reset_handler,
.eh_host_reset_handler = megaraid_reset_handler,
+ .change_queue_depth = megaraid_change_queue_depth,
.use_clustering = ENABLE_CLUSTERING,
.sdev_attrs = megaraid_sdev_attrs,
.shost_attrs = megaraid_shost_attrs,
* megaraid_init - module load hook
*
* We register ourselves as hotplug enabled module and let PCI subsystem
- * discover our adaters
- **/
+ * discover our adapters.
+ */
static int __init
megaraid_init(void)
{
// register as a PCI hot-plug driver module
- rval = pci_register_driver(&megaraid_pci_driver_g);
+ rval = pci_register_driver(&megaraid_pci_driver);
if (rval < 0) {
con_log(CL_ANN, (KERN_WARNING
"megaraid: could not register hotplug support.\n"));
/**
* megaraid_exit - driver unload entry point
*
- * We simply unwrap the megaraid_init routine here
+ * We simply unwrap the megaraid_init routine here.
*/
static void __exit
megaraid_exit(void)
con_log(CL_DLEVEL1, (KERN_NOTICE "megaraid: unloading framework\n"));
// unregister as PCI hotplug driver
- pci_unregister_driver(&megaraid_pci_driver_g);
+ pci_unregister_driver(&megaraid_pci_driver);
return;
}
/**
* megaraid_probe_one - PCI hotplug entry point
- * @param pdev : handle to this controller's PCI configuration space
- * @param id : pci device id of the class of controllers
+ * @pdev : handle to this controller's PCI configuration space
+ * @id : pci device id of the class of controllers
*
* This routine should be called whenever a new adapter is detected by the
- * PCI hotplug susbsytem.
- **/
+ * PCI hotplug susbsystem.
+ */
static int __devinit
megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
{
pci_set_master(pdev);
// Allocate the per driver initialization structure
- adapter = kmalloc(sizeof(adapter_t), GFP_KERNEL);
+ adapter = kzalloc(sizeof(adapter_t), GFP_KERNEL);
if (adapter == NULL) {
con_log(CL_ANN, (KERN_WARNING
- "megaraid: out of memory, %s %d.\n", __FUNCTION__, __LINE__));
+ "megaraid: out of memory, %s %d.\n", __func__, __LINE__));
goto out_probe_one;
}
- memset(adapter, 0, sizeof(adapter_t));
// set up PCI related soft state and other pre-known parameters
// Setup the default DMA mask. This would be changed later on
// depending on hardware capabilities
- if (pci_set_dma_mask(adapter->pdev, DMA_32BIT_MASK) != 0) {
+ if (pci_set_dma_mask(adapter->pdev, DMA_BIT_MASK(32)) != 0) {
con_log(CL_ANN, (KERN_WARNING
"megaraid: pci_set_dma_mask failed:%d\n", __LINE__));
// Initialize the synchronization lock for kernel and LLD
spin_lock_init(&adapter->lock);
- adapter->host_lock = &adapter->lock;
-
// Initialize the command queues: the list of free SCBs and the list
// of pending SCBs.
/**
- * megaraid_detach_one - release the framework resources and call LLD release
- * routine
- * @param pdev : handle for our PCI cofiguration space
+ * megaraid_detach_one - release framework resources and call LLD release routine
+ * @pdev : handle for our PCI cofiguration space
*
* This routine is called during driver unload. We free all the allocated
* resources and call the corresponding LLD so that it can also release all
* its resources.
*
- * This routine is also called from the PCI hotplug system
- **/
+ * This routine is also called from the PCI hotplug system.
+ */
static void
megaraid_detach_one(struct pci_dev *pdev)
{
/**
* megaraid_mbox_shutdown - PCI shutdown for megaraid HBA
- * @param device : generice driver model device
+ * @pdev : generic driver model device
*
- * Shutdown notification, perform flush cache
+ * Shutdown notification, perform flush cache.
*/
static void
-megaraid_mbox_shutdown(struct device *device)
+megaraid_mbox_shutdown(struct pci_dev *pdev)
{
- adapter_t *adapter = pci_get_drvdata(to_pci_dev(device));
+ adapter_t *adapter = pci_get_drvdata(pdev);
static int counter;
if (!adapter) {
/**
* megaraid_io_attach - attach a device with the IO subsystem
- * @param adapter : controller's soft state
+ * @adapter : controller's soft state
*
- * Attach this device with the IO subsystem
- **/
+ * Attach this device with the IO subsystem.
+ */
static int
megaraid_io_attach(adapter_t *adapter)
{
SCSIHOST2ADAP(host) = (caddr_t)adapter;
adapter->host = host;
- // export the parameters required by the mid-layer
- scsi_assign_lock(host, adapter->host_lock);
- scsi_set_device(host, &adapter->pdev->dev);
-
host->irq = adapter->irq;
host->unique_id = adapter->unique_id;
host->can_queue = adapter->max_cmds;
/**
* megaraid_io_detach - detach a device from the IO subsystem
- * @param adapter : controller's soft state
+ * @adapter : controller's soft state
*
- * Detach this device from the IO subsystem
- **/
+ * Detach this device from the IO subsystem.
+ */
static void
megaraid_io_detach(adapter_t *adapter)
{
/**
* megaraid_init_mbox - initialize controller
- * @param adapter - our soft state
+ * @adapter : our soft state
*
- * . Allocate 16-byte aligned mailbox memory for firmware handshake
- * . Allocate controller's memory resources
- * . Find out all initialization data
- * . Allocate memory required for all the commands
- * . Use internal library of FW routines, build up complete soft state
+ * - Allocate 16-byte aligned mailbox memory for firmware handshake
+ * - Allocate controller's memory resources
+ * - Find out all initialization data
+ * - Allocate memory required for all the commands
+ * - Use internal library of FW routines, build up complete soft state
*/
-static int __init
+static int __devinit
megaraid_init_mbox(adapter_t *adapter)
{
struct pci_dev *pdev;
mraid_device_t *raid_dev;
int i;
+ uint32_t magic64;
adapter->ito = MBOX_TIMEOUT;
* Allocate and initialize the init data structure for mailbox
* controllers
*/
- raid_dev = kmalloc(sizeof(mraid_device_t), GFP_KERNEL);
+ raid_dev = kzalloc(sizeof(mraid_device_t), GFP_KERNEL);
if (raid_dev == NULL) return -1;
- memset(raid_dev, 0, sizeof(mraid_device_t));
/*
* Attach the adapter soft state to raid device soft state
goto out_release_regions;
}
- //
- // Setup the rest of the soft state using the library of FW routines
- //
+ /* initialize the mutual exclusion lock for the mailbox */
+ spin_lock_init(&raid_dev->mailbox_lock);
- // request IRQ and register the interrupt service routine
- if (request_irq(adapter->irq, megaraid_isr, SA_SHIRQ, "megaraid",
- adapter)) {
+ /* allocate memory required for commands */
+ if (megaraid_alloc_cmd_packets(adapter) != 0)
+ goto out_iounmap;
- con_log(CL_ANN, (KERN_WARNING
- "megaraid: Couldn't register IRQ %d!\n", adapter->irq));
+ /*
+ * Issue SYNC cmd to flush the pending cmds in the adapter
+ * and initialize its internal state
+ */
- goto out_iounmap;
- }
+ if (megaraid_mbox_fire_sync_cmd(adapter))
+ con_log(CL_ANN, ("megaraid: sync cmd failed\n"));
+ /*
+ * Setup the rest of the soft state using the library of
+ * FW routines
+ */
- // initialize the mutual exclusion lock for the mailbox
- spin_lock_init(&raid_dev->mailbox_lock);
+ /* request IRQ and register the interrupt service routine */
+ if (request_irq(adapter->irq, megaraid_isr, IRQF_SHARED, "megaraid",
+ adapter)) {
+
+ con_log(CL_ANN, (KERN_WARNING
+ "megaraid: Couldn't register IRQ %d!\n", adapter->irq));
+ goto out_alloc_cmds;
- // allocate memory required for commands
- if (megaraid_alloc_cmd_packets(adapter) != 0) {
- goto out_free_irq;
}
// Product info
- if (megaraid_mbox_product_info(adapter) != 0) {
- goto out_alloc_cmds;
- }
+ if (megaraid_mbox_product_info(adapter) != 0)
+ goto out_free_irq;
// Do we support extended CDBs
adapter->max_cdb_sz = 10;
* Allocate resources required to issue FW calls, when sysfs is
* accessed
*/
- if (megaraid_sysfs_alloc_resources(adapter) != 0) {
- goto out_alloc_cmds;
- }
+ if (megaraid_sysfs_alloc_resources(adapter) != 0)
+ goto out_free_irq;
// Set the DMA mask to 64-bit. All supported controllers as capable of
// DMA in this range
- if (pci_set_dma_mask(adapter->pdev, DMA_64BIT_MASK) != 0) {
-
- con_log(CL_ANN, (KERN_WARNING
- "megaraid: could not set DMA mask for 64-bit.\n"));
+ pci_read_config_dword(adapter->pdev, PCI_CONF_AMISIG64, &magic64);
+
+ if (((magic64 == HBA_SIGNATURE_64_BIT) &&
+ ((adapter->pdev->subsystem_device !=
+ PCI_SUBSYS_ID_MEGARAID_SATA_150_6) &&
+ (adapter->pdev->subsystem_device !=
+ PCI_SUBSYS_ID_MEGARAID_SATA_150_4))) ||
+ (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC &&
+ adapter->pdev->device == PCI_DEVICE_ID_VERDE) ||
+ (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC &&
+ adapter->pdev->device == PCI_DEVICE_ID_DOBSON) ||
+ (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC &&
+ adapter->pdev->device == PCI_DEVICE_ID_LINDSAY) ||
+ (adapter->pdev->vendor == PCI_VENDOR_ID_DELL &&
+ adapter->pdev->device == PCI_DEVICE_ID_PERC4_DI_EVERGLADES) ||
+ (adapter->pdev->vendor == PCI_VENDOR_ID_DELL &&
+ adapter->pdev->device == PCI_DEVICE_ID_PERC4E_DI_KOBUK)) {
+ if (pci_set_dma_mask(adapter->pdev, DMA_BIT_MASK(64))) {
+ con_log(CL_ANN, (KERN_WARNING
+ "megaraid: DMA mask for 64-bit failed\n"));
- goto out_free_sysfs_res;
+ if (pci_set_dma_mask (adapter->pdev, DMA_BIT_MASK(32))) {
+ con_log(CL_ANN, (KERN_WARNING
+ "megaraid: 32-bit DMA mask failed\n"));
+ goto out_free_sysfs_res;
+ }
+ }
}
// setup tasklet for DPC
out_free_sysfs_res:
megaraid_sysfs_free_resources(adapter);
-out_alloc_cmds:
- megaraid_free_cmd_packets(adapter);
out_free_irq:
free_irq(adapter->irq, adapter);
+out_alloc_cmds:
+ megaraid_free_cmd_packets(adapter);
out_iounmap:
iounmap(raid_dev->baseaddr);
out_release_regions:
/**
* megaraid_fini_mbox - undo controller initialization
- * @param adapter : our soft state
+ * @adapter : our soft state
*/
static void
megaraid_fini_mbox(adapter_t *adapter)
/**
* megaraid_alloc_cmd_packets - allocate shared mailbox
- * @param adapter : soft state of the raid controller
+ * @adapter : soft state of the raid controller
*
* Allocate and align the shared mailbox. This maibox is used to issue
* all the commands. For IO based controllers, the mailbox is also regsitered
* with the FW. Allocate memory for all commands as well.
- * This is our big allocator
+ * This is our big allocator.
*/
static int
megaraid_alloc_cmd_packets(adapter_t *adapter)
if (!raid_dev->una_mbox64) {
con_log(CL_ANN, (KERN_WARNING
- "megaraid: out of memory, %s %d\n", __FUNCTION__,
+ "megaraid: out of memory, %s %d\n", __func__,
__LINE__));
return -1;
}
if (!adapter->ibuf) {
con_log(CL_ANN, (KERN_WARNING
- "megaraid: out of memory, %s %d\n", __FUNCTION__,
+ "megaraid: out of memory, %s %d\n", __func__,
__LINE__));
goto out_free_common_mbox;
* since the calling routine does not yet know the number of available
* commands.
*/
- adapter->kscb_list = kmalloc(sizeof(scb_t) * MBOX_MAX_SCSI_CMDS,
- GFP_KERNEL);
+ adapter->kscb_list = kcalloc(MBOX_MAX_SCSI_CMDS, sizeof(scb_t), GFP_KERNEL);
if (adapter->kscb_list == NULL) {
con_log(CL_ANN, (KERN_WARNING
- "megaraid: out of memory, %s %d\n", __FUNCTION__,
+ "megaraid: out of memory, %s %d\n", __func__,
__LINE__));
goto out_free_ibuf;
}
- memset(adapter->kscb_list, 0, sizeof(scb_t) * MBOX_MAX_SCSI_CMDS);
// memory allocation for our command packets
if (megaraid_mbox_setup_dma_pools(adapter) != 0) {
con_log(CL_ANN, (KERN_WARNING
- "megaraid: out of memory, %s %d\n", __FUNCTION__,
+ "megaraid: out of memory, %s %d\n", __func__,
__LINE__));
goto out_free_scb_list;
}
/**
* megaraid_free_cmd_packets - free memory
- * @param adapter : soft state of the raid controller
+ * @adapter : soft state of the raid controller
*
- * Release memory resources allocated for commands
+ * Release memory resources allocated for commands.
*/
static void
megaraid_free_cmd_packets(adapter_t *adapter)
/**
* megaraid_mbox_setup_dma_pools - setup dma pool for command packets
- * @param adapter : HBA soft state
+ * @adapter : HBA soft state
*
- * setup the dma pools for mailbox, passthru and extended passthru structures,
- * and scatter-gather lists
+ * Setup the dma pools for mailbox, passthru and extended passthru structures,
+ * and scatter-gather lists.
*/
static int
megaraid_mbox_setup_dma_pools(adapter_t *adapter)
/**
* megaraid_mbox_teardown_dma_pools - teardown dma pools for command packets
- * @param adapter : HBA soft state
+ * @adapter : HBA soft state
*
- * teardown the dma pool for mailbox, passthru and extended passthru
- * structures, and scatter-gather lists
+ * Teardown the dma pool for mailbox, passthru and extended passthru
+ * structures, and scatter-gather lists.
*/
static void
megaraid_mbox_teardown_dma_pools(adapter_t *adapter)
/**
* megaraid_alloc_scb - detach and return a scb from the free list
* @adapter : controller's soft state
+ * @scp : pointer to the scsi command to be executed
*
- * return the scb from the head of the free list. NULL if there are none
- * available
- **/
-static inline scb_t *
+ * Return the scb from the head of the free list. %NULL if there are none
+ * available.
+ */
+static scb_t *
megaraid_alloc_scb(adapter_t *adapter, struct scsi_cmnd *scp)
{
struct list_head *head = &adapter->kscb_pool;
* @adapter : controller's soft state
* @scb : scb to be freed
*
- * return the scb back to the free list of scbs. The caller must 'flush' the
+ * Return the scb back to the free list of scbs. The caller must 'flush' the
* SCB before calling us. E.g., performing pci_unamp and/or pci_sync etc.
* NOTE NOTE: Make sure the scb is not on any list before calling this
* routine.
- **/
+ */
static inline void
megaraid_dealloc_scb(adapter_t *adapter, scb_t *scb)
{
/**
* megaraid_mbox_mksgl - make the scatter-gather list
- * @adapter - controller's soft state
- * @scb - scsi control block
+ * @adapter : controller's soft state
+ * @scb : scsi control block
*
- * prepare the scatter-gather list
+ * Prepare the scatter-gather list.
*/
-static inline int
+static int
megaraid_mbox_mksgl(adapter_t *adapter, scb_t *scb)
{
struct scatterlist *sgl;
mbox_ccb_t *ccb;
- struct page *page;
- unsigned long offset;
struct scsi_cmnd *scp;
int sgcnt;
int i;
scp = scb->scp;
ccb = (mbox_ccb_t *)scb->ccb;
+ sgcnt = scsi_dma_map(scp);
+ BUG_ON(sgcnt < 0 || sgcnt > adapter->sglen);
+
// no mapping required if no data to be transferred
- if (!scp->request_buffer || !scp->request_bufflen)
+ if (!sgcnt)
return 0;
- if (!scp->use_sg) { /* scatter-gather list not used */
-
- page = virt_to_page(scp->request_buffer);
-
- offset = ((unsigned long)scp->request_buffer & ~PAGE_MASK);
-
- ccb->buf_dma_h = pci_map_page(adapter->pdev, page, offset,
- scp->request_bufflen,
- scb->dma_direction);
- scb->dma_type = MRAID_DMA_WBUF;
-
- /*
- * We need to handle special 64-bit commands that need a
- * minimum of 1 SG
- */
- sgcnt = 1;
- ccb->sgl64[0].address = ccb->buf_dma_h;
- ccb->sgl64[0].length = scp->request_bufflen;
-
- return sgcnt;
- }
-
- sgl = (struct scatterlist *)scp->request_buffer;
-
- // The number of sg elements returned must not exceed our limit
- sgcnt = pci_map_sg(adapter->pdev, sgl, scp->use_sg,
- scb->dma_direction);
-
- if (sgcnt > adapter->sglen) {
- con_log(CL_ANN, (KERN_CRIT
- "megaraid critical: too many sg elements:%d\n",
- sgcnt));
- BUG();
- }
-
scb->dma_type = MRAID_DMA_WSG;
- for (i = 0; i < sgcnt; i++, sgl++) {
+ scsi_for_each_sg(scp, sgl, sgcnt, i) {
ccb->sgl64[i].address = sg_dma_address(sgl);
ccb->sgl64[i].length = sg_dma_len(sgl);
}
/**
* mbox_post_cmd - issue a mailbox command
- * @adapter - controller's soft state
- * @scb - command to be issued
+ * @adapter : controller's soft state
+ * @scb : command to be issued
*
- * post the command to the controller if mailbox is availble.
+ * Post the command to the controller if mailbox is available.
*/
-static inline int
+static int
mbox_post_cmd(adapter_t *adapter, scb_t *scb)
{
mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
adapter->outstanding_cmds++;
- if (scb->dma_direction == PCI_DMA_TODEVICE) {
- if (!scb->scp->use_sg) { // sg list not used
- pci_dma_sync_single_for_device(adapter->pdev,
- ccb->buf_dma_h,
- scb->scp->request_bufflen,
- PCI_DMA_TODEVICE);
- }
- else {
- pci_dma_sync_sg_for_device(adapter->pdev,
- scb->scp->request_buffer,
- scb->scp->use_sg, PCI_DMA_TODEVICE);
- }
- }
+ if (scb->dma_direction == PCI_DMA_TODEVICE)
+ pci_dma_sync_sg_for_device(adapter->pdev,
+ scsi_sglist(scb->scp),
+ scsi_sg_count(scb->scp),
+ PCI_DMA_TODEVICE);
mbox->busy = 1; // Set busy
mbox->poll = 0;
* Queue entry point for mailbox based controllers.
*/
static int
-megaraid_queue_command(struct scsi_cmnd *scp, void (* done)(struct scsi_cmnd *))
+megaraid_queue_command(struct scsi_cmnd *scp, void (*done)(struct scsi_cmnd *))
{
adapter_t *adapter;
scb_t *scb;
scp->scsi_done = done;
scp->result = 0;
- assert_spin_locked(adapter->host_lock);
-
- spin_unlock(adapter->host_lock);
-
/*
* Allocate and build a SCB request
* if_busy flag will be set if megaraid_mbox_build_cmd() command could
* return 0 in that case, and we would do the callback right away.
*/
if_busy = 0;
- scb = megaraid_mbox_build_cmd(adapter, scp, &if_busy);
-
- if (scb) {
- megaraid_mbox_runpendq(adapter, scb);
- }
-
- spin_lock(adapter->host_lock);
-
+ scb = megaraid_mbox_build_cmd(adapter, scp, &if_busy);
if (!scb) { // command already completed
done(scp);
return 0;
}
+ megaraid_mbox_runpendq(adapter, scb);
return if_busy;
}
-
/**
- * megaraid_mbox_build_cmd - transform the mid-layer scsi command to megaraid
- * firmware lingua
- * @adapter - controller's soft state
- * @scp - mid-layer scsi command pointer
- * @busy - set if request could not be completed because of lack of
+ * megaraid_mbox_build_cmd - transform the mid-layer scsi commands
+ * @adapter : controller's soft state
+ * @scp : mid-layer scsi command pointer
+ * @busy : set if request could not be completed because of lack of
* resources
*
- * convert the command issued by mid-layer to format understood by megaraid
- * firmware. We also complete certain command without sending them to firmware
+ * Transform the mid-layer scsi command to megaraid firmware lingua.
+ * Convert the command issued by mid-layer to format understood by megaraid
+ * firmware. We also complete certain commands without sending them to firmware.
*/
static scb_t *
megaraid_mbox_build_cmd(adapter_t *adapter, struct scsi_cmnd *scp, int *busy)
return scb;
case MODE_SENSE:
- if (scp->use_sg) {
- struct scatterlist *sgl;
- caddr_t vaddr;
+ {
+ struct scatterlist *sgl;
+ caddr_t vaddr;
- sgl = (struct scatterlist *)scp->request_buffer;
- if (sgl->page) {
- vaddr = (caddr_t)
- (page_address((&sgl[0])->page)
- + (&sgl[0])->offset);
+ sgl = scsi_sglist(scp);
+ if (sg_page(sgl)) {
+ vaddr = (caddr_t) sg_virt(&sgl[0]);
- memset(vaddr, 0, scp->cmnd[4]);
- }
- else {
- con_log(CL_ANN, (KERN_WARNING
- "megaraid mailbox: invalid sg:%d\n",
- __LINE__));
- }
+ memset(vaddr, 0, scp->cmnd[4]);
}
else {
- memset(scp->request_buffer, 0, scp->cmnd[4]);
+ con_log(CL_ANN, (KERN_WARNING
+ "megaraid mailbox: invalid sg:%d\n",
+ __LINE__));
}
- scp->result = (DID_OK << 16);
- return NULL;
+ }
+ scp->result = (DID_OK << 16);
+ return NULL;
case INQUIRY:
/*
rdev->last_disp |= (1L << SCP2CHANNEL(scp));
}
+ if (scp->cmnd[1] & MEGA_SCSI_INQ_EVPD) {
+ scp->sense_buffer[0] = 0x70;
+ scp->sense_buffer[2] = ILLEGAL_REQUEST;
+ scp->sense_buffer[12] = MEGA_INVALID_FIELD_IN_CDB;
+ scp->result = CHECK_CONDITION << 1;
+ return NULL;
+ }
+
/* Fall through */
case READ_CAPACITY:
mbox->cmd = MBOXCMD_PASSTHRU64;
scb->dma_direction = scp->sc_data_direction;
- pthru->dataxferlen = scp->request_bufflen;
+ pthru->dataxferlen = scsi_bufflen(scp);
pthru->dataxferaddr = ccb->sgl_dma_h;
pthru->numsge = megaraid_mbox_mksgl(adapter,
scb);
/**
* megaraid_mbox_runpendq - execute commands queued in the pending queue
* @adapter : controller's soft state
- * @scb : SCB to be queued in the pending list
+ * @scb_q : SCB to be queued in the pending list
*
- * scan the pending list for commands which are not yet issued and try to
+ * Scan the pending list for commands which are not yet issued and try to
* post to the controller. The SCB can be a null pointer, which would indicate
* no SCB to be queue, just try to execute the ones in the pending list.
*
/**
* megaraid_mbox_prepare_pthru - prepare a command for physical devices
- * @adapter - pointer to controller's soft state
- * @scb - scsi control block
- * @scp - scsi command from the mid-layer
+ * @adapter : pointer to controller's soft state
+ * @scb : scsi control block
+ * @scp : scsi command from the mid-layer
*
- * prepare a command for the scsi physical devices
+ * Prepare a command for the scsi physical devices.
*/
static void
megaraid_mbox_prepare_pthru(adapter_t *adapter, scb_t *scb,
memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
- if (scp->request_bufflen) {
- pthru->dataxferlen = scp->request_bufflen;
+ if (scsi_bufflen(scp)) {
+ pthru->dataxferlen = scsi_bufflen(scp);
pthru->dataxferaddr = ccb->sgl_dma_h;
pthru->numsge = megaraid_mbox_mksgl(adapter, scb);
}
/**
* megaraid_mbox_prepare_epthru - prepare a command for physical devices
- * @adapter - pointer to controller's soft state
- * @scb - scsi control block
- * @scp - scsi command from the mid-layer
+ * @adapter : pointer to controller's soft state
+ * @scb : scsi control block
+ * @scp : scsi command from the mid-layer
*
- * prepare a command for the scsi physical devices. This rountine prepares
- * commands for devices which can take extended CDBs (>10 bytes)
+ * Prepare a command for the scsi physical devices. This rountine prepares
+ * commands for devices which can take extended CDBs (>10 bytes).
*/
static void
megaraid_mbox_prepare_epthru(adapter_t *adapter, scb_t *scb,
memcpy(epthru->cdb, scp->cmnd, scp->cmd_len);
- if (scp->request_bufflen) {
- epthru->dataxferlen = scp->request_bufflen;
+ if (scsi_bufflen(scp)) {
+ epthru->dataxferlen = scsi_bufflen(scp);
epthru->dataxferaddr = ccb->sgl_dma_h;
epthru->numsge = megaraid_mbox_mksgl(adapter, scb);
}
/**
* megaraid_ack_sequence - interrupt ack sequence for memory mapped HBAs
- * @adapter - controller's soft state
+ * @adapter : controller's soft state
*
- * Interrupt ackrowledgement sequence for memory mapped HBAs. Find out the
+ * Interrupt acknowledgement sequence for memory mapped HBAs. Find out the
* completed command and put them on the completed list for later processing.
*
* Returns: 1 if the interrupt is valid, 0 otherwise
*/
-static inline int
+static int
megaraid_ack_sequence(adapter_t *adapter)
{
mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
/**
* megaraid_isr - isr for memory based mailbox based controllers
- * @irq - irq
- * @devp - pointer to our soft state
- * @regs - unused
+ * @irq : irq
+ * @devp : pointer to our soft state
*
* Interrupt service routine for memory-mapped mailbox controllers.
*/
static irqreturn_t
-megaraid_isr(int irq, void *devp, struct pt_regs *regs)
+megaraid_isr(int irq, void *devp)
{
adapter_t *adapter = devp;
int handled;
*
* DMA sync if required.
*/
-static inline void
+static void
megaraid_mbox_sync_scb(adapter_t *adapter, scb_t *scb)
{
mbox_ccb_t *ccb;
ccb = (mbox_ccb_t *)scb->ccb;
- switch (scb->dma_type) {
-
- case MRAID_DMA_WBUF:
- if (scb->dma_direction == PCI_DMA_FROMDEVICE) {
- pci_dma_sync_single_for_cpu(adapter->pdev,
- ccb->buf_dma_h,
- scb->scp->request_bufflen,
+ if (scb->dma_direction == PCI_DMA_FROMDEVICE)
+ pci_dma_sync_sg_for_cpu(adapter->pdev,
+ scsi_sglist(scb->scp),
+ scsi_sg_count(scb->scp),
PCI_DMA_FROMDEVICE);
- }
-
- pci_unmap_page(adapter->pdev, ccb->buf_dma_h,
- scb->scp->request_bufflen, scb->dma_direction);
-
- break;
-
- case MRAID_DMA_WSG:
- if (scb->dma_direction == PCI_DMA_FROMDEVICE) {
- pci_dma_sync_sg_for_cpu(adapter->pdev,
- scb->scp->request_buffer,
- scb->scp->use_sg, PCI_DMA_FROMDEVICE);
- }
-
- pci_unmap_sg(adapter->pdev, scb->scp->request_buffer,
- scb->scp->use_sg, scb->dma_direction);
-
- break;
-
- default:
- break;
- }
+ scsi_dma_unmap(scb->scp);
return;
}
unsigned long flags;
uint8_t c;
int status;
+ uioc_t *kioc;
if (!adapter) return;
// remove from local clist
list_del_init(&scb->list);
+ kioc = (uioc_t *)scb->gp;
+ kioc->status = 0;
+
megaraid_mbox_mm_done(adapter, scb);
continue;
if (scp->cmnd[0] == INQUIRY && status == 0 && islogical == 0
&& IS_RAID_CH(raid_dev, scb->dev_channel)) {
- if (scp->use_sg) {
- sgl = (struct scatterlist *)
- scp->request_buffer;
-
- if (sgl->page) {
- c = *(unsigned char *)
- (page_address((&sgl[0])->page) +
- (&sgl[0])->offset);
- }
- else {
- con_log(CL_ANN, (KERN_WARNING
- "megaraid mailbox: invalid sg:%d\n",
- __LINE__));
- c = 0;
- }
- }
- else {
- c = *(uint8_t *)scp->request_buffer;
+ sgl = scsi_sglist(scp);
+ if (sg_page(sgl)) {
+ c = *(unsigned char *) sg_virt(&sgl[0]);
+ } else {
+ con_log(CL_ANN, (KERN_WARNING
+ "megaraid mailbox: invalid sg:%d\n",
+ __LINE__));
+ c = 0;
}
if ((c & 0x1F ) == TYPE_DISK) {
megaraid_dealloc_scb(adapter, scb);
// send the scsi packet back to kernel
- spin_lock(adapter->host_lock);
scp->scsi_done(scp);
- spin_unlock(adapter->host_lock);
}
return;
* aborted. All the commands issued to the F/W must complete.
**/
static int
-__megaraid_abort_handler(struct scsi_cmnd *scp)
+megaraid_abort_handler(struct scsi_cmnd *scp)
{
adapter_t *adapter;
mraid_device_t *raid_dev;
adapter = SCP2ADAPTER(scp);
raid_dev = ADAP2RAIDDEV(adapter);
- assert_spin_locked(adapter->host_lock);
-
con_log(CL_ANN, (KERN_WARNING
"megaraid: aborting-%ld cmd=%x <c=%d t=%d l=%d>\n",
scp->serial_number, scp->cmnd[0], SCP2CHANNEL(scp),
// traverse through the list of all SCB, since driver does not
// maintain these SCBs on any list
found = 0;
+ spin_lock_irq(&adapter->lock);
for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) {
scb = adapter->kscb_list + i;
}
}
}
+ spin_unlock_irq(&adapter->lock);
if (!found) {
con_log(CL_ANN, (KERN_WARNING
return FAILED;
}
-static int
-megaraid_abort_handler(struct scsi_cmnd *scp)
-{
- adapter_t *adapter;
- int rc;
-
- adapter = SCP2ADAPTER(scp);
-
- spin_lock_irq(adapter->host_lock);
- rc = __megaraid_abort_handler(scp);
- spin_unlock_irq(adapter->host_lock);
-
- return rc;
-}
-
-
/**
* megaraid_reset_handler - device reset hadler for mailbox based driver
* @scp : reference command
* the FW is still live, in which case the outstanding commands counter mut go
* down to 0. If that happens, also issue the reservation reset command to
* relinquish (possible) reservations on the logical drives connected to this
- * host
+ * host.
**/
static int
-__megaraid_reset_handler(struct scsi_cmnd *scp)
+megaraid_reset_handler(struct scsi_cmnd *scp)
{
adapter_t *adapter;
scb_t *scb;
int recovery_window;
int recovering;
int i;
+ uioc_t *kioc;
adapter = SCP2ADAPTER(scp);
raid_dev = ADAP2RAIDDEV(adapter);
- assert_spin_locked(adapter->host_lock);
-
- con_log(CL_ANN, (KERN_WARNING "megaraid: reseting the host...\n"));
-
// return failure if adapter is not responding
if (raid_dev->hw_error) {
con_log(CL_ANN, (KERN_NOTICE
// Also, reset all the commands currently owned by the driver
spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags);
list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) {
-
list_del_init(&scb->list); // from pending list
- con_log(CL_ANN, (KERN_WARNING
- "megaraid: %ld:%d[%d:%d], reset from pending list\n",
- scp->serial_number, scb->sno,
- scb->dev_channel, scb->dev_target));
+ if (scb->sno >= MBOX_MAX_SCSI_CMDS) {
+ con_log(CL_ANN, (KERN_WARNING
+ "megaraid: IOCTL packet with %d[%d:%d] being reset\n",
+ scb->sno, scb->dev_channel, scb->dev_target));
- scp->result = (DID_RESET << 16);
- scp->scsi_done(scp);
+ scb->status = -1;
- megaraid_dealloc_scb(adapter, scb);
+ kioc = (uioc_t *)scb->gp;
+ kioc->status = -EFAULT;
+
+ megaraid_mbox_mm_done(adapter, scb);
+ } else {
+ if (scb->scp == scp) { // Found command
+ con_log(CL_ANN, (KERN_WARNING
+ "megaraid: %ld:%d[%d:%d], reset from pending list\n",
+ scp->serial_number, scb->sno,
+ scb->dev_channel, scb->dev_target));
+ } else {
+ con_log(CL_ANN, (KERN_WARNING
+ "megaraid: IO packet with %d[%d:%d] being reset\n",
+ scb->sno, scb->dev_channel, scb->dev_target));
+ }
+
+ scb->scp->result = (DID_RESET << 16);
+ scb->scp->scsi_done(scb->scp);
+
+ megaraid_dealloc_scb(adapter, scb);
+ }
}
spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags);
if (adapter->outstanding_cmds) {
con_log(CL_ANN, (KERN_NOTICE
"megaraid: %d outstanding commands. Max wait %d sec\n",
- adapter->outstanding_cmds, MBOX_RESET_WAIT));
+ adapter->outstanding_cmds,
+ (MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT)));
}
- spin_unlock(adapter->host_lock);
-
recovery_window = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT;
recovering = adapter->outstanding_cmds;
- for (i = 0; i < recovery_window && adapter->outstanding_cmds; i++) {
+ for (i = 0; i < recovery_window; i++) {
megaraid_ack_sequence(adapter);
con_log(CL_ANN, (
"megaraid mbox: Wait for %d commands to complete:%d\n",
adapter->outstanding_cmds,
- MBOX_RESET_WAIT - i));
+ (MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT) - i));
}
// bailout if no recovery happended in reset time
- if ((i == MBOX_RESET_WAIT) &&
- (recovering == adapter->outstanding_cmds)) {
+ if (adapter->outstanding_cmds == 0) {
break;
}
msleep(1000);
}
- spin_lock(adapter->host_lock);
+ spin_lock(&adapter->lock);
// If still outstanding commands, bail out
if (adapter->outstanding_cmds) {
raid_dev->hw_error = 1;
- return FAILED;
+ rval = FAILED;
+ goto out;
}
else {
con_log(CL_ANN, (KERN_NOTICE
- "megaraid mbox: reset sequence completed sucessfully\n"));
+ "megaraid mbox: reset sequence completed successfully\n"));
}
// If the controller supports clustering, reset reservations
- if (!adapter->ha) return SUCCESS;
+ if (!adapter->ha) {
+ rval = SUCCESS;
+ goto out;
+ }
// clear reservations if any
raw_mbox[0] = CLUSTER_CMD;
"megaraid: reservation reset failed\n"));
}
+ out:
+ spin_unlock_irq(&adapter->lock);
return rval;
}
-static int
-megaraid_reset_handler(struct scsi_cmnd *cmd)
-{
- int rc;
-
- spin_lock_irq(cmd->device->host->host_lock);
- rc = __megaraid_reset_handler(cmd);
- spin_unlock_irq(cmd->device->host->host_lock);
-
- return rc;
-}
-
-
/*
* START: internal commands library
*
/**
* mbox_post_sync_cmd() - blocking command to the mailbox based controllers
- * @adapter - controller's soft state
- * @raw_mbox - the mailbox
+ * @adapter : controller's soft state
+ * @raw_mbox : the mailbox
*
* Issue a scb in synchronous and non-interrupt mode for mailbox based
- * controllers
+ * controllers.
*/
static int
mbox_post_sync_cmd(adapter_t *adapter, uint8_t raw_mbox[])
// available within 1 second, assume FW is initializing and wait
// for an extended amount of time
if (mbox->numstatus == 0xFF) { // status not yet available
- udelay(25);;
+ udelay(25);
for (i = 0; mbox->numstatus == 0xFF && i < 1000; i++) {
rmb();
/**
* mbox_post_sync_cmd_fast - blocking command to the mailbox based controllers
- * @adapter - controller's soft state
- * @raw_mbox - the mailbox
+ * @adapter : controller's soft state
+ * @raw_mbox : the mailbox
*
* Issue a scb in synchronous and non-interrupt mode for mailbox based
* controllers. This is a faster version of the synchronous command and
- * therefore can be called in interrupt-context as well
+ * therefore can be called in interrupt-context as well.
*/
static int
mbox_post_sync_cmd_fast(adapter_t *adapter, uint8_t raw_mbox[])
wmb();
WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1);
- for (i = 0; i < 0xFFFFF; i++) {
+ for (i = 0; i < MBOX_SYNC_WAIT_CNT; i++) {
if (mbox->numstatus != 0xFF) break;
+ rmb();
+ udelay(MBOX_SYNC_DELAY_200);
}
- if (i == 0xFFFFF) {
+ if (i == MBOX_SYNC_WAIT_CNT) {
// We may need to re-calibrate the counter
con_log(CL_ANN, (KERN_CRIT
"megaraid: fast sync command timed out\n"));
/**
* megaraid_busywait_mbox() - Wait until the controller's mailbox is available
- * @raid_dev - RAID device (HBA) soft state
+ * @raid_dev : RAID device (HBA) soft state
*
- * wait until the controller's mailbox is available to accept more commands.
- * wait for at most 1 second
+ * Wait until the controller's mailbox is available to accept more commands.
+ * Wait for at most 1 second.
*/
static int
megaraid_busywait_mbox(mraid_device_t *raid_dev)
/**
* megaraid_mbox_product_info - some static information about the controller
- * @adapter - our soft state
+ * @adapter : our soft state
*
- * issue commands to the controller to grab some parameters required by our
+ * Issue commands to the controller to grab some parameters required by our
* caller.
*/
static int
if (pinfo == NULL) {
con_log(CL_ANN, (KERN_WARNING
- "megaraid: out of memory, %s %d\n", __FUNCTION__,
+ "megaraid: out of memory, %s %d\n", __func__,
__LINE__));
return -1;
/**
* megaraid_mbox_extended_cdb - check for support for extended CDBs
- * @adapter - soft state for the controller
+ * @adapter : soft state for the controller
*
- * this routine check whether the controller in question supports extended
- * ( > 10 bytes ) CDBs
+ * This routine check whether the controller in question supports extended
+ * ( > 10 bytes ) CDBs.
*/
static int
megaraid_mbox_extended_cdb(adapter_t *adapter)
/**
* megaraid_mbox_support_ha - Do we support clustering
- * @adapter - soft state for the controller
- * @init_id - ID of the initiator
+ * @adapter : soft state for the controller
+ * @init_id : ID of the initiator
*
* Determine if the firmware supports clustering and the ID of the initiator.
*/
/**
* megaraid_mbox_support_random_del - Do we support random deletion
- * @adapter - soft state for the controller
+ * @adapter : soft state for the controller
*
- * Determine if the firmware supports random deletion
+ * Determine if the firmware supports random deletion.
* Return: 1 is operation supported, 0 otherwise
*/
static int
uint8_t raw_mbox[sizeof(mbox_t)];
int rval;
+ /*
+ * Newer firmware on Dell CERC expect a different
+ * random deletion handling, so disable it.
+ */
+ if (adapter->pdev->vendor == PCI_VENDOR_ID_AMI &&
+ adapter->pdev->device == PCI_DEVICE_ID_AMI_MEGARAID3 &&
+ adapter->pdev->subsystem_vendor == PCI_VENDOR_ID_DELL &&
+ adapter->pdev->subsystem_device == PCI_SUBSYS_ID_CERC_ATA100_4CH &&
+ (adapter->fw_version[0] > '6' ||
+ (adapter->fw_version[0] == '6' &&
+ adapter->fw_version[2] > '6') ||
+ (adapter->fw_version[0] == '6'
+ && adapter->fw_version[2] == '6'
+ && adapter->fw_version[3] > '1'))) {
+ con_log(CL_DLEVEL1, ("megaraid: disable random deletion\n"));
+ return 0;
+ }
mbox = (mbox_t *)raw_mbox;
/**
* megaraid_mbox_get_max_sg - maximum sg elements supported by the firmware
- * @adapter - soft state for the controller
+ * @adapter : soft state for the controller
*
* Find out the maximum number of scatter-gather elements supported by the
- * firmware
+ * firmware.
*/
static int
megaraid_mbox_get_max_sg(adapter_t *adapter)
/**
* megaraid_mbox_enum_raid_scsi - enumerate the RAID and SCSI channels
- * @adapter - soft state for the controller
+ * @adapter : soft state for the controller
*
- * Enumerate the RAID and SCSI channels for ROMB platoforms so that channels
- * can be exported as regular SCSI channels
+ * Enumerate the RAID and SCSI channels for ROMB platforms so that channels
+ * can be exported as regular SCSI channels.
*/
static void
megaraid_mbox_enum_raid_scsi(adapter_t *adapter)
/**
* megaraid_mbox_flush_cache - flush adapter and disks cache
- * @param adapter : soft state for the controller
+ * @adapter : soft state for the controller
*
- * Flush adapter cache followed by disks cache
+ * Flush adapter cache followed by disks cache.
*/
static void
megaraid_mbox_flush_cache(adapter_t *adapter)
/**
+ * megaraid_mbox_fire_sync_cmd - fire the sync cmd
+ * @adapter : soft state for the controller
+ *
+ * Clears the pending cmds in FW and reinits its RAID structs.
+ */
+static int
+megaraid_mbox_fire_sync_cmd(adapter_t *adapter)
+{
+ mbox_t *mbox;
+ uint8_t raw_mbox[sizeof(mbox_t)];
+ mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
+ mbox64_t *mbox64;
+ int status = 0;
+ int i;
+ uint32_t dword;
+
+ mbox = (mbox_t *)raw_mbox;
+
+ memset((caddr_t)raw_mbox, 0, sizeof(mbox_t));
+
+ raw_mbox[0] = 0xFF;
+
+ mbox64 = raid_dev->mbox64;
+ mbox = raid_dev->mbox;
+
+ /* Wait until mailbox is free */
+ if (megaraid_busywait_mbox(raid_dev) != 0) {
+ status = 1;
+ goto blocked_mailbox;
+ }
+
+ /* Copy mailbox data into host structure */
+ memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 16);
+ mbox->cmdid = 0xFE;
+ mbox->busy = 1;
+ mbox->poll = 0;
+ mbox->ack = 0;
+ mbox->numstatus = 0;
+ mbox->status = 0;
+
+ wmb();
+ WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1);
+
+ /* Wait for maximum 1 min for status to post.
+ * If the Firmware SUPPORTS the ABOVE COMMAND,
+ * mbox->cmd will be set to 0
+ * else
+ * the firmware will reject the command with
+ * mbox->numstatus set to 1
+ */
+
+ i = 0;
+ status = 0;
+ while (!mbox->numstatus && mbox->cmd == 0xFF) {
+ rmb();
+ msleep(1);
+ i++;
+ if (i > 1000 * 60) {
+ status = 1;
+ break;
+ }
+ }
+ if (mbox->numstatus == 1)
+ status = 1; /*cmd not supported*/
+
+ /* Check for interrupt line */
+ dword = RDOUTDOOR(raid_dev);
+ WROUTDOOR(raid_dev, dword);
+ WRINDOOR(raid_dev,2);
+
+ return status;
+
+blocked_mailbox:
+ con_log(CL_ANN, (KERN_WARNING "megaraid: blocked mailbox\n"));
+ return status;
+}
+
+/**
* megaraid_mbox_display_scb - display SCB information, mostly debug purposes
- * @param adapter : controllers' soft state
- * @param scb : SCB to be displayed
- * @param level : debug level for console print
+ * @adapter : controller's soft state
+ * @scb : SCB to be displayed
+ * @level : debug level for console print
*
* Diplay information about the given SCB iff the current debug level is
- * verbose
+ * verbose.
*/
static void
megaraid_mbox_display_scb(adapter_t *adapter, scb_t *scb)
* scsi addresses and megaraid scsi and logical drive addresses. We export
* scsi devices on their actual addresses, whereas the logical drives are
* exported on a virtual scsi channel.
- **/
+ */
static void
megaraid_mbox_setup_device_map(adapter_t *adapter)
{
/*
* START: Interface for the common management module
*
- * This is the module, which interfaces with the common mangement module to
+ * This is the module, which interfaces with the common management module to
* provide support for ioctl and sysfs
*/
/**
- * megaraid_cmm_register - register with the mangement module
- * @param adapter : HBA soft state
+ * megaraid_cmm_register - register with the management module
+ * @adapter : HBA soft state
*
* Register with the management module, which allows applications to issue
* ioctl calls to the drivers. This interface is used by the management module
int i;
// Allocate memory for the base list of scb for management module.
- adapter->uscb_list = kmalloc(sizeof(scb_t) * MBOX_MAX_USER_CMDS,
- GFP_KERNEL);
+ adapter->uscb_list = kcalloc(MBOX_MAX_USER_CMDS, sizeof(scb_t), GFP_KERNEL);
if (adapter->uscb_list == NULL) {
con_log(CL_ANN, (KERN_WARNING
- "megaraid: out of memory, %s %d\n", __FUNCTION__,
+ "megaraid: out of memory, %s %d\n", __func__,
__LINE__));
return -1;
}
- memset(adapter->uscb_list, 0, sizeof(scb_t) * MBOX_MAX_USER_CMDS);
// Initialize the synchronization parameters for resources for
adp.drvr_data = (unsigned long)adapter;
adp.pdev = adapter->pdev;
adp.issue_uioc = megaraid_mbox_mm_handler;
- adp.timeout = 300;
+ adp.timeout = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT;
adp.max_kioc = MBOX_MAX_USER_CMDS;
if ((rval = mraid_mm_register_adp(&adp)) != 0) {
/**
- * megaraid_cmm_unregister - un-register with the mangement module
- * @param adapter : HBA soft state
+ * megaraid_cmm_unregister - un-register with the management module
+ * @adapter : HBA soft state
*
* Un-register with the management module.
* FIXME: mgmt module must return failure for unregister if it has pending
- * commands in LLD
+ * commands in LLD.
*/
static int
megaraid_cmm_unregister(adapter_t *adapter)
/**
* megaraid_mbox_mm_handler - interface for CMM to issue commands to LLD
- * @param drvr_data : LLD specific data
- * @param kioc : CMM interface packet
- * @param action : command action
+ * @drvr_data : LLD specific data
+ * @kioc : CMM interface packet
+ * @action : command action
*
- * This routine is invoked whenever the Common Mangement Module (CMM) has a
+ * This routine is invoked whenever the Common Management Module (CMM) has a
* command for us. The 'action' parameter specifies if this is a new command
* or otherwise.
*/
/**
* megaraid_mbox_mm_command - issues commands routed through CMM
- * @param adapter : HBA soft state
- * @param kioc : management command packet
+ * @adapter : HBA soft state
+ * @kioc : management command packet
*
* Issues commands, which are routed through the management module.
*/
/*
* Set the quiescent flag to stop issuing cmds to FW.
*/
- spin_lock_irqsave(adapter->host_lock, flags);
+ spin_lock_irqsave(&adapter->lock, flags);
adapter->quiescent++;
- spin_unlock_irqrestore(adapter->host_lock, flags);
+ spin_unlock_irqrestore(&adapter->lock, flags);
/*
* Wait till there are no more cmds outstanding at FW. Try for at most
unsigned long flags;
kioc = (uioc_t *)scb->gp;
- kioc->status = 0;
mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf;
mbox64->mbox32.status = scb->status;
raw_mbox = (uint8_t *)&mbox64->mbox32;
/**
* gather_hbainfo - HBA characteristics for the applications
- * @param adapter : HBA soft state
- * @param hinfo : pointer to the caller's host info strucuture
+ * @adapter : HBA soft state
+ * @hinfo : pointer to the caller's host info strucuture
*/
static int
gather_hbainfo(adapter_t *adapter, mraid_hba_info_t *hinfo)
/**
* megaraid_sysfs_alloc_resources - allocate sysfs related resources
+ * @adapter : controller's soft state
*
* Allocate packets required to issue FW calls whenever the sysfs attributes
* are read. These attributes would require up-to-date information from the
* FW. Also set up resources for mutual exclusion to share these resources and
* the wait queue.
*
- * @param adapter : controller's soft state
- *
- * @return 0 on success
- * @return -ERROR_CODE on failure
+ * Return 0 on success.
+ * Return -ERROR_CODE on failure.
*/
static int
megaraid_sysfs_alloc_resources(adapter_t *adapter)
!raid_dev->sysfs_buffer) {
con_log(CL_ANN, (KERN_WARNING
- "megaraid: out of memory, %s %d\n", __FUNCTION__,
+ "megaraid: out of memory, %s %d\n", __func__,
__LINE__));
rval = -ENOMEM;
megaraid_sysfs_free_resources(adapter);
}
- sema_init(&raid_dev->sysfs_sem, 1);
+ mutex_init(&raid_dev->sysfs_mtx);
init_waitqueue_head(&raid_dev->sysfs_wait_q);
/**
* megaraid_sysfs_free_resources - free sysfs related resources
+ * @adapter : controller's soft state
*
* Free packets allocated for sysfs FW commands
- *
- * @param adapter : controller's soft state
*/
static void
megaraid_sysfs_free_resources(adapter_t *adapter)
{
mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter);
- if (raid_dev->sysfs_uioc) kfree(raid_dev->sysfs_uioc);
-
- if (raid_dev->sysfs_mbox64) kfree(raid_dev->sysfs_mbox64);
+ kfree(raid_dev->sysfs_uioc);
+ kfree(raid_dev->sysfs_mbox64);
if (raid_dev->sysfs_buffer) {
pci_free_consistent(adapter->pdev, PAGE_SIZE,
/**
* megaraid_sysfs_get_ldmap_done - callback for get ldmap
+ * @uioc : completed packet
*
* Callback routine called in the ISR/tasklet context for get ldmap call
- *
- * @param uioc : completed packet
*/
static void
megaraid_sysfs_get_ldmap_done(uioc_t *uioc)
/**
* megaraid_sysfs_get_ldmap_timeout - timeout handling for get ldmap
+ * @data : timed out packet
*
* Timeout routine to recover and return to application, in case the adapter
- * has stopped responding. A timeout of 60 seconds for this command seem like
- * a good value
- *
- * @param uioc : timed out packet
+ * has stopped responding. A timeout of 60 seconds for this command seems like
+ * a good value.
*/
static void
megaraid_sysfs_get_ldmap_timeout(unsigned long data)
/**
* megaraid_sysfs_get_ldmap - get update logical drive map
+ * @adapter : controller's soft state
*
* This routine will be called whenever user reads the logical drive
* attributes, go get the current logical drive mapping table from the
- * firmware. We use the managment API's to issue commands to the controller.
+ * firmware. We use the management API's to issue commands to the controller.
*
* NOTE: The commands issuance functionality is not generalized and
* implemented in context of "get ld map" command only. If required, the
* standalone libary. For now, this should suffice since there is no other
* user of this interface.
*
- * @param adapter : controller's soft state
- *
- * @return 0 on success
- * @return -1 on failure
+ * Return 0 on success.
+ * Return -1 on failure.
*/
static int
megaraid_sysfs_get_ldmap(adapter_t *adapter)
/*
* Allow only one read at a time to go through the sysfs attributes
*/
- down(&raid_dev->sysfs_sem);
+ mutex_lock(&raid_dev->sysfs_mtx);
uioc = raid_dev->sysfs_uioc;
mbox64 = raid_dev->sysfs_mbox64;
del_timer_sync(timerp);
- up(&raid_dev->sysfs_sem);
+ mutex_unlock(&raid_dev->sysfs_mtx);
return rval;
}
/**
* megaraid_sysfs_show_app_hndl - display application handle for this adapter
+ * @cdev : class device object representation for the host
+ * @buf : buffer to send data to
*
* Display the handle used by the applications while executing management
* tasks on the adapter. We invoke a management module API to get the adapter
* handle, since we do not interface with applications directly.
- *
- * @param cdev : class device object representation for the host
- * @param buf : buffer to send data to
*/
static ssize_t
-megaraid_sysfs_show_app_hndl(struct class_device *cdev, char *buf)
+megaraid_sysfs_show_app_hndl(struct device *dev, struct device_attribute *attr,
+ char *buf)
{
- struct Scsi_Host *shost = class_to_shost(cdev);
+ struct Scsi_Host *shost = class_to_shost(dev);
adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(shost);
uint32_t app_hndl;
/**
* megaraid_sysfs_show_ldnum - display the logical drive number for this device
+ * @dev : device object representation for the scsi device
+ * @attr : device attribute to show
+ * @buf : buffer to send data to
*
* Display the logical drive number for the device in question, if it a valid
- * logical drive. For physical devices, "-1" is returned
- * The logical drive number is displayed in following format
+ * logical drive. For physical devices, "-1" is returned.
+ *
+ * The logical drive number is displayed in following format:
*
* <SCSI ID> <LD NUM> <LD STICKY ID> <APP ADAPTER HANDLE>
- * <int> <int> <int> <int>
*
- * @param dev : device object representation for the scsi device
- * @param buf : buffer to send data to
+ * <int> <int> <int> <int>
*/
static ssize_t
megaraid_sysfs_show_ldnum(struct device *dev, struct device_attribute *attr, char *buf)
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff