* 2 of the License, or (at your option) any later version.
*
* FILE : megaraid_mbox.c
- * Version : v2.20.4.8 (Apr 11 2006)
+ * 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>
- * Seokmann Ju <Seokmann.Ju@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_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);
-MODULE_AUTHOR("sju@lsil.com");
+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.
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)
{
/**
* 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)
/**
* 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.
- **/
+ */
static int __devinit
megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
{
/**
- * 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 pci_dev *pdev)
/**
* 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)
{
/**
* 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 __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;
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
+ /* allocate memory required for commands */
+ if (megaraid_alloc_cmd_packets(adapter) != 0)
+ goto out_iounmap;
+
+ /*
+ * Issue SYNC cmd to flush the pending cmds in the adapter
+ * and initialize its internal state
+ */
+
+ 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
+ */
+
+ /* 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;
- goto out_iounmap;
- }
-
-
- // initialize the mutual exclusion lock for the mailbox
- spin_lock_init(&raid_dev->mailbox_lock);
-
- // 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_64BIT_MASK)) {
+ 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_32BIT_MASK)) {
+ 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)
/**
* 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
- **/
+ * 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)
{
* @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 int
megaraid_mbox_mksgl(adapter_t *adapter, scb_t *scb)
/**
* 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 int
mbox_post_cmd(adapter_t *adapter, scb_t *scb)
* 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;
}
/**
- * 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)
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:
/**
* 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,
/**
* 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,
/**
* 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
/**
* 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;
* 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)
/**
* 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[])
/**
* 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[])
/**
* 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
/**
* 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
/**
* 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)
{
/**
* megaraid_cmm_register - register with the mangement module
- * @param adapter : HBA soft state
+ * @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
/**
* megaraid_cmm_unregister - un-register with the mangement module
- * @param adapter : HBA soft state
+ * @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
* command for us. The 'action' parameter specifies if this is a new command
/**
* 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.
*/
/**
* 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)
/**
* 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)
/**
* 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
* 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)
/**
* 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_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)
projects / linux-drm-fsl-dcu.git / blobdiff