*
* Linux MegaRAID driver for SAS based RAID controllers
*
- * Copyright (c) 2003-2005 LSI Logic Corporation.
+ * Copyright (c) 2003-2005 LSI Corporation.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* 2 of the License, or (at your option) any later version.
*
* FILE : megaraid_sas.c
- * Version : v00.00.03.10-rc5
+ * Version : v00.00.03.16-rc1
*
* Authors:
* (email-id : megaraidlinux@lsi.com)
#include <linux/moduleparam.h>
#include <linux/module.h>
#include <linux/spinlock.h>
+#include <linux/mutex.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/uio.h>
#include <scsi/scsi_host.h>
#include "megaraid_sas.h"
+/*
+ * poll_mode_io:1- schedule complete completion from q cmd
+ */
+static unsigned int poll_mode_io;
+module_param_named(poll_mode_io, poll_mode_io, int, 0);
+MODULE_PARM_DESC(poll_mode_io,
+ "Complete cmds from IO path, (default=0)");
+
MODULE_LICENSE("GPL");
MODULE_VERSION(MEGASAS_VERSION);
MODULE_AUTHOR("megaraidlinux@lsi.com");
-MODULE_DESCRIPTION("LSI Logic MegaRAID SAS Driver");
+MODULE_DESCRIPTION("LSI MegaRAID SAS Driver");
/*
* PCI ID table for all supported controllers
static u32 megasas_dbg_lvl;
+static void
+megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
+ u8 alt_status);
+
/**
* megasas_get_cmd - Get a command from the free pool
* @instance: Adapter soft state
atomic_inc(&instance->fw_outstanding);
instance->instancet->fire_cmd(cmd->frame_phys_addr ,cmd->frame_count-1,instance->reg_set);
+ /*
+ * Check if we have pend cmds to be completed
+ */
+ if (poll_mode_io && atomic_read(&instance->fw_outstanding))
+ tasklet_schedule(&instance->isr_tasklet);
+
return 0;
return 0;
}
+/**
+ * megasas_complete_cmd_dpc - Returns FW's controller structure
+ * @instance_addr: Address of adapter soft state
+ *
+ * Tasklet to complete cmds
+ */
+static void megasas_complete_cmd_dpc(unsigned long instance_addr)
+{
+ u32 producer;
+ u32 consumer;
+ u32 context;
+ struct megasas_cmd *cmd;
+ struct megasas_instance *instance =
+ (struct megasas_instance *)instance_addr;
+ unsigned long flags;
+
+ /* If we have already declared adapter dead, donot complete cmds */
+ if (instance->hw_crit_error)
+ return;
+
+ spin_lock_irqsave(&instance->completion_lock, flags);
+
+ producer = *instance->producer;
+ consumer = *instance->consumer;
+
+ while (consumer != producer) {
+ context = instance->reply_queue[consumer];
+
+ cmd = instance->cmd_list[context];
+
+ megasas_complete_cmd(instance, cmd, DID_OK);
+
+ consumer++;
+ if (consumer == (instance->max_fw_cmds + 1)) {
+ consumer = 0;
+ }
+ }
+
+ *instance->consumer = producer;
+
+ spin_unlock_irqrestore(&instance->completion_lock, flags);
+
+ /*
+ * Check if we can restore can_queue
+ */
+ if (instance->flag & MEGASAS_FW_BUSY
+ && time_after(jiffies, instance->last_time + 5 * HZ)
+ && atomic_read(&instance->fw_outstanding) < 17) {
+
+ spin_lock_irqsave(instance->host->host_lock, flags);
+ instance->flag &= ~MEGASAS_FW_BUSY;
+ instance->host->can_queue =
+ instance->max_fw_cmds - MEGASAS_INT_CMDS;
+
+ spin_unlock_irqrestore(instance->host->host_lock, flags);
+ }
+}
+
/**
* megasas_wait_for_outstanding - Wait for all outstanding cmds
* @instance: Adapter soft state
if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
"commands to complete\n",i,outstanding);
+ /*
+ * Call cmd completion routine. Cmd to be
+ * be completed directly without depending on isr.
+ */
+ megasas_complete_cmd_dpc((unsigned long)instance);
}
msleep(1000);
static struct scsi_host_template megasas_template = {
.module = THIS_MODULE,
- .name = "LSI Logic SAS based MegaRAID driver",
+ .name = "LSI SAS based MegaRAID driver",
.proc_name = "megaraid_sas",
.slave_configure = megasas_slave_configure,
.queuecommand = megasas_queue_command,
* Allocate the dynamic array first and then allocate individual
* commands.
*/
- instance->cmd_list = kmalloc(sizeof(struct megasas_cmd *) * max_cmd,
- GFP_KERNEL);
+ instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
if (!instance->cmd_list) {
printk(KERN_DEBUG "megasas: out of memory\n");
return -ENOMEM;
}
- memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) * max_cmd);
for (i = 0; i < max_cmd; i++) {
instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
}
/**
- * megasas_complete_cmd_dpc - Returns FW's controller structure
- * @instance_addr: Address of adapter soft state
+ * megasas_issue_init_mfi - Initializes the FW
+ * @instance: Adapter soft state
*
- * Tasklet to complete cmds
+ * Issues the INIT MFI cmd
*/
-static void megasas_complete_cmd_dpc(unsigned long instance_addr)
+static int
+megasas_issue_init_mfi(struct megasas_instance *instance)
{
- u32 producer;
- u32 consumer;
u32 context;
+
struct megasas_cmd *cmd;
- struct megasas_instance *instance = (struct megasas_instance *)instance_addr;
- unsigned long flags;
- /* If we have already declared adapter dead, donot complete cmds */
- if (instance->hw_crit_error)
- return;
+ struct megasas_init_frame *init_frame;
+ struct megasas_init_queue_info *initq_info;
+ dma_addr_t init_frame_h;
+ dma_addr_t initq_info_h;
- producer = *instance->producer;
- consumer = *instance->consumer;
+ /*
+ * Prepare a init frame. Note the init frame points to queue info
+ * structure. Each frame has SGL allocated after first 64 bytes. For
+ * this frame - since we don't need any SGL - we use SGL's space as
+ * queue info structure
+ *
+ * We will not get a NULL command below. We just created the pool.
+ */
+ cmd = megasas_get_cmd(instance);
- while (consumer != producer) {
- context = instance->reply_queue[consumer];
+ init_frame = (struct megasas_init_frame *)cmd->frame;
+ initq_info = (struct megasas_init_queue_info *)
+ ((unsigned long)init_frame + 64);
- cmd = instance->cmd_list[context];
+ init_frame_h = cmd->frame_phys_addr;
+ initq_info_h = init_frame_h + 64;
- megasas_complete_cmd(instance, cmd, DID_OK);
+ context = init_frame->context;
+ memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
+ memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
+ init_frame->context = context;
- consumer++;
- if (consumer == (instance->max_fw_cmds + 1)) {
- consumer = 0;
- }
- }
+ initq_info->reply_queue_entries = instance->max_fw_cmds + 1;
+ initq_info->reply_queue_start_phys_addr_lo = instance->reply_queue_h;
- *instance->consumer = producer;
+ initq_info->producer_index_phys_addr_lo = instance->producer_h;
+ initq_info->consumer_index_phys_addr_lo = instance->consumer_h;
+
+ init_frame->cmd = MFI_CMD_INIT;
+ init_frame->cmd_status = 0xFF;
+ init_frame->queue_info_new_phys_addr_lo = initq_info_h;
+
+ init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info);
/*
- * Check if we can restore can_queue
+ * disable the intr before firing the init frame to FW
*/
- if (instance->flag & MEGASAS_FW_BUSY
- && time_after(jiffies, instance->last_time + 5 * HZ)
- && atomic_read(&instance->fw_outstanding) < 17) {
+ instance->instancet->disable_intr(instance->reg_set);
- spin_lock_irqsave(instance->host->host_lock, flags);
- instance->flag &= ~MEGASAS_FW_BUSY;
- instance->host->can_queue =
- instance->max_fw_cmds - MEGASAS_INT_CMDS;
+ /*
+ * Issue the init frame in polled mode
+ */
- spin_unlock_irqrestore(instance->host->host_lock, flags);
+ if (megasas_issue_polled(instance, cmd)) {
+ printk(KERN_ERR "megasas: Failed to init firmware\n");
+ megasas_return_cmd(instance, cmd);
+ goto fail_fw_init;
}
+ megasas_return_cmd(instance, cmd);
+
+ return 0;
+
+fail_fw_init:
+ return -EINVAL;
+}
+
+/**
+ * megasas_start_timer - Initializes a timer object
+ * @instance: Adapter soft state
+ * @timer: timer object to be initialized
+ * @fn: timer function
+ * @interval: time interval between timer function call
+ */
+static inline void
+megasas_start_timer(struct megasas_instance *instance,
+ struct timer_list *timer,
+ void *fn, unsigned long interval)
+{
+ init_timer(timer);
+ timer->expires = jiffies + interval;
+ timer->data = (unsigned long)instance;
+ timer->function = fn;
+ add_timer(timer);
+}
+
+/**
+ * megasas_io_completion_timer - Timer fn
+ * @instance_addr: Address of adapter soft state
+ *
+ * Schedules tasklet for cmd completion
+ * if poll_mode_io is set
+ */
+static void
+megasas_io_completion_timer(unsigned long instance_addr)
+{
+ struct megasas_instance *instance =
+ (struct megasas_instance *)instance_addr;
+
+ if (atomic_read(&instance->fw_outstanding))
+ tasklet_schedule(&instance->isr_tasklet);
+
+ /* Restart timer */
+ if (poll_mode_io)
+ mod_timer(&instance->io_completion_timer,
+ jiffies + MEGASAS_COMPLETION_TIMER_INTERVAL);
}
/**
u32 reply_q_sz;
u32 max_sectors_1;
u32 max_sectors_2;
+ u32 tmp_sectors;
struct megasas_register_set __iomem *reg_set;
-
- struct megasas_cmd *cmd;
struct megasas_ctrl_info *ctrl_info;
-
- struct megasas_init_frame *init_frame;
- struct megasas_init_queue_info *initq_info;
- dma_addr_t init_frame_h;
- dma_addr_t initq_info_h;
-
/*
* Map the message registers
*/
instance->base_addr = pci_resource_start(instance->pdev, 0);
- if (pci_request_regions(instance->pdev, "megasas: LSI Logic")) {
+ if (pci_request_regions(instance->pdev, "megasas: LSI")) {
printk(KERN_DEBUG "megasas: IO memory region busy!\n");
return -EBUSY;
}
goto fail_reply_queue;
}
- /*
- * Prepare a init frame. Note the init frame points to queue info
- * structure. Each frame has SGL allocated after first 64 bytes. For
- * this frame - since we don't need any SGL - we use SGL's space as
- * queue info structure
- *
- * We will not get a NULL command below. We just created the pool.
- */
- cmd = megasas_get_cmd(instance);
-
- init_frame = (struct megasas_init_frame *)cmd->frame;
- initq_info = (struct megasas_init_queue_info *)
- ((unsigned long)init_frame + 64);
-
- init_frame_h = cmd->frame_phys_addr;
- initq_info_h = init_frame_h + 64;
-
- memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
- memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
-
- initq_info->reply_queue_entries = instance->max_fw_cmds + 1;
- initq_info->reply_queue_start_phys_addr_lo = instance->reply_queue_h;
-
- initq_info->producer_index_phys_addr_lo = instance->producer_h;
- initq_info->consumer_index_phys_addr_lo = instance->consumer_h;
-
- init_frame->cmd = MFI_CMD_INIT;
- init_frame->cmd_status = 0xFF;
- init_frame->queue_info_new_phys_addr_lo = initq_info_h;
-
- init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info);
-
- /*
- * disable the intr before firing the init frame to FW
- */
- instance->instancet->disable_intr(instance->reg_set);
-
- /*
- * Issue the init frame in polled mode
- */
- if (megasas_issue_polled(instance, cmd)) {
- printk(KERN_DEBUG "megasas: Failed to init firmware\n");
+ if (megasas_issue_init_mfi(instance))
goto fail_fw_init;
- }
-
- megasas_return_cmd(instance, cmd);
ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL);
* Note that older firmwares ( < FW ver 30) didn't report information
* to calculate max_sectors_1. So the number ended up as zero always.
*/
+ tmp_sectors = 0;
if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) {
max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
ctrl_info->max_strips_per_io;
max_sectors_2 = ctrl_info->max_request_size;
- instance->max_sectors_per_req = (max_sectors_1 < max_sectors_2)
- ? max_sectors_1 : max_sectors_2;
- } else
- instance->max_sectors_per_req = instance->max_num_sge *
- PAGE_SIZE / 512;
+ tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2);
+ }
+
+ instance->max_sectors_per_req = instance->max_num_sge *
+ PAGE_SIZE / 512;
+ if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
+ instance->max_sectors_per_req = tmp_sectors;
kfree(ctrl_info);
* Setup tasklet for cmd completion
*/
- tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc,
- (unsigned long)instance);
+ tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc,
+ (unsigned long)instance);
+
+ /* Initialize the cmd completion timer */
+ if (poll_mode_io)
+ megasas_start_timer(instance, &instance->io_completion_timer,
+ megasas_io_completion_timer,
+ MEGASAS_COMPLETION_TIMER_INTERVAL);
return 0;
fail_fw_init:
- megasas_return_cmd(instance, cmd);
pci_free_consistent(instance->pdev, reply_q_sz,
instance->reply_queue, instance->reply_queue_h);
return 0;
}
+static int
+megasas_set_dma_mask(struct pci_dev *pdev)
+{
+ /*
+ * All our contollers are capable of performing 64-bit DMA
+ */
+ if (IS_DMA64) {
+ if (pci_set_dma_mask(pdev, DMA_64BIT_MASK) != 0) {
+
+ if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) != 0)
+ goto fail_set_dma_mask;
+ }
+ } else {
+ if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) != 0)
+ goto fail_set_dma_mask;
+ }
+ return 0;
+
+fail_set_dma_mask:
+ return 1;
+}
+
/**
* megasas_probe_one - PCI hotplug entry point
* @pdev: PCI device structure
pci_set_master(pdev);
- /*
- * All our contollers are capable of performing 64-bit DMA
- */
- if (IS_DMA64) {
- if (pci_set_dma_mask(pdev, DMA_64BIT_MASK) != 0) {
-
- if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) != 0)
- goto fail_set_dma_mask;
- }
- } else {
- if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) != 0)
- goto fail_set_dma_mask;
- }
+ if (megasas_set_dma_mask(pdev))
+ goto fail_set_dma_mask;
host = scsi_host_alloc(&megasas_template,
sizeof(struct megasas_instance));
init_waitqueue_head(&instance->abort_cmd_wait_q);
spin_lock_init(&instance->cmd_pool_lock);
+ spin_lock_init(&instance->completion_lock);
- sema_init(&instance->aen_mutex, 1);
+ mutex_init(&instance->aen_mutex);
sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS);
/*
/**
* megasas_shutdown_controller - Instructs FW to shutdown the controller
* @instance: Adapter soft state
+ * @opcode: Shutdown/Hibernate
*/
-static void megasas_shutdown_controller(struct megasas_instance *instance)
+static void megasas_shutdown_controller(struct megasas_instance *instance,
+ u32 opcode)
{
struct megasas_cmd *cmd;
struct megasas_dcmd_frame *dcmd;
dcmd->flags = MFI_FRAME_DIR_NONE;
dcmd->timeout = 0;
dcmd->data_xfer_len = 0;
- dcmd->opcode = MR_DCMD_CTRL_SHUTDOWN;
+ dcmd->opcode = opcode;
megasas_issue_blocked_cmd(instance, cmd);
return;
}
+/**
+ * megasas_suspend - driver suspend entry point
+ * @pdev: PCI device structure
+ * @state: PCI power state to suspend routine
+ */
+static int __devinit
+megasas_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ struct Scsi_Host *host;
+ struct megasas_instance *instance;
+
+ instance = pci_get_drvdata(pdev);
+ host = instance->host;
+
+ if (poll_mode_io)
+ del_timer_sync(&instance->io_completion_timer);
+
+ megasas_flush_cache(instance);
+ megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
+ tasklet_kill(&instance->isr_tasklet);
+
+ pci_set_drvdata(instance->pdev, instance);
+ instance->instancet->disable_intr(instance->reg_set);
+ free_irq(instance->pdev->irq, instance);
+
+ pci_save_state(pdev);
+ pci_disable_device(pdev);
+
+ pci_set_power_state(pdev, pci_choose_state(pdev, state));
+
+ return 0;
+}
+
+/**
+ * megasas_resume- driver resume entry point
+ * @pdev: PCI device structure
+ */
+static int __devinit
+megasas_resume(struct pci_dev *pdev)
+{
+ int rval;
+ struct Scsi_Host *host;
+ struct megasas_instance *instance;
+
+ instance = pci_get_drvdata(pdev);
+ host = instance->host;
+ pci_set_power_state(pdev, PCI_D0);
+ pci_enable_wake(pdev, PCI_D0, 0);
+ pci_restore_state(pdev);
+
+ /*
+ * PCI prepping: enable device set bus mastering and dma mask
+ */
+ rval = pci_enable_device(pdev);
+
+ if (rval) {
+ printk(KERN_ERR "megasas: Enable device failed\n");
+ return rval;
+ }
+
+ pci_set_master(pdev);
+
+ if (megasas_set_dma_mask(pdev))
+ goto fail_set_dma_mask;
+
+ /*
+ * Initialize MFI Firmware
+ */
+
+ *instance->producer = 0;
+ *instance->consumer = 0;
+
+ atomic_set(&instance->fw_outstanding, 0);
+
+ /*
+ * We expect the FW state to be READY
+ */
+ if (megasas_transition_to_ready(instance))
+ goto fail_ready_state;
+
+ if (megasas_issue_init_mfi(instance))
+ goto fail_init_mfi;
+
+ tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc,
+ (unsigned long)instance);
+
+ /*
+ * Register IRQ
+ */
+ if (request_irq(pdev->irq, megasas_isr, IRQF_SHARED,
+ "megasas", instance)) {
+ printk(KERN_ERR "megasas: Failed to register IRQ\n");
+ goto fail_irq;
+ }
+
+ instance->instancet->enable_intr(instance->reg_set);
+
+ /*
+ * Initiate AEN (Asynchronous Event Notification)
+ */
+ if (megasas_start_aen(instance))
+ printk(KERN_ERR "megasas: Start AEN failed\n");
+
+ /* Initialize the cmd completion timer */
+ if (poll_mode_io)
+ megasas_start_timer(instance, &instance->io_completion_timer,
+ megasas_io_completion_timer,
+ MEGASAS_COMPLETION_TIMER_INTERVAL);
+ return 0;
+
+fail_irq:
+fail_init_mfi:
+ if (instance->evt_detail)
+ pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
+ instance->evt_detail,
+ instance->evt_detail_h);
+
+ if (instance->producer)
+ pci_free_consistent(pdev, sizeof(u32), instance->producer,
+ instance->producer_h);
+ if (instance->consumer)
+ pci_free_consistent(pdev, sizeof(u32), instance->consumer,
+ instance->consumer_h);
+ scsi_host_put(host);
+
+fail_set_dma_mask:
+fail_ready_state:
+
+ pci_disable_device(pdev);
+
+ return -ENODEV;
+}
+
/**
* megasas_detach_one - PCI hot"un"plug entry point
* @pdev: PCI device structure
instance = pci_get_drvdata(pdev);
host = instance->host;
+ if (poll_mode_io)
+ del_timer_sync(&instance->io_completion_timer);
+
scsi_remove_host(instance->host);
megasas_flush_cache(instance);
- megasas_shutdown_controller(instance);
+ megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
tasklet_kill(&instance->isr_tasklet);
/*
void *sense = NULL;
dma_addr_t sense_handle;
u32 *sense_ptr;
+ unsigned long *sense_buff;
memset(kbuff_arr, 0, sizeof(kbuff_arr));
*/
if (ioc->sense_len) {
/*
- * sense_ptr points to the location that has the user
+ * sense_buff points to the location that has the user
* sense buffer address
*/
- sense_ptr = (u32 *) ((unsigned long)ioc->frame.raw +
- ioc->sense_off);
+ sense_buff = (unsigned long *) ((unsigned long)ioc->frame.raw +
+ ioc->sense_off);
- if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
- sense, ioc->sense_len)) {
+ if (copy_to_user((void __user *)(unsigned long)(*sense_buff),
+ sense, ioc->sense_len)) {
+ printk(KERN_ERR "megasas: Failed to copy out to user "
+ "sense data\n");
error = -EFAULT;
goto out;
}
if (!instance)
return -ENODEV;
- down(&instance->aen_mutex);
+ mutex_lock(&instance->aen_mutex);
error = megasas_register_aen(instance, aen.seq_num,
aen.class_locale_word);
- up(&instance->aen_mutex);
+ mutex_unlock(&instance->aen_mutex);
return error;
}
.id_table = megasas_pci_table,
.probe = megasas_probe_one,
.remove = __devexit_p(megasas_detach_one),
+ .suspend = megasas_suspend,
+ .resume = megasas_resume,
.shutdown = megasas_shutdown,
};
static ssize_t
megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
{
- return sprintf(buf,"%u",megasas_dbg_lvl);
+ return sprintf(buf, "%u\n", megasas_dbg_lvl);
}
static ssize_t
}
static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUGO, megasas_sysfs_show_dbg_lvl,
- megasas_sysfs_set_dbg_lvl);
+ megasas_sysfs_set_dbg_lvl);
+
+static ssize_t
+megasas_sysfs_show_poll_mode_io(struct device_driver *dd, char *buf)
+{
+ return sprintf(buf, "%u\n", poll_mode_io);
+}
+
+static ssize_t
+megasas_sysfs_set_poll_mode_io(struct device_driver *dd,
+ const char *buf, size_t count)
+{
+ int retval = count;
+ int tmp = poll_mode_io;
+ int i;
+ struct megasas_instance *instance;
+
+ if (sscanf(buf, "%u", &poll_mode_io) < 1) {
+ printk(KERN_ERR "megasas: could not set poll_mode_io\n");
+ retval = -EINVAL;
+ }
+
+ /*
+ * Check if poll_mode_io is already set or is same as previous value
+ */
+ if ((tmp && poll_mode_io) || (tmp == poll_mode_io))
+ goto out;
+
+ if (poll_mode_io) {
+ /*
+ * Start timers for all adapters
+ */
+ for (i = 0; i < megasas_mgmt_info.max_index; i++) {
+ instance = megasas_mgmt_info.instance[i];
+ if (instance) {
+ megasas_start_timer(instance,
+ &instance->io_completion_timer,
+ megasas_io_completion_timer,
+ MEGASAS_COMPLETION_TIMER_INTERVAL);
+ }
+ }
+ } else {
+ /*
+ * Delete timers for all adapters
+ */
+ for (i = 0; i < megasas_mgmt_info.max_index; i++) {
+ instance = megasas_mgmt_info.instance[i];
+ if (instance)
+ del_timer_sync(&instance->io_completion_timer);
+ }
+ }
+
+out:
+ return retval;
+}
+
+static DRIVER_ATTR(poll_mode_io, S_IRUGO|S_IWUGO,
+ megasas_sysfs_show_poll_mode_io,
+ megasas_sysfs_set_poll_mode_io);
/**
* megasas_init - Driver load entry point
&driver_attr_dbg_lvl);
if (rval)
goto err_dcf_dbg_lvl;
+ rval = driver_create_file(&megasas_pci_driver.driver,
+ &driver_attr_poll_mode_io);
+ if (rval)
+ goto err_dcf_poll_mode_io;
return rval;
+
+err_dcf_poll_mode_io:
+ driver_remove_file(&megasas_pci_driver.driver,
+ &driver_attr_dbg_lvl);
err_dcf_dbg_lvl:
driver_remove_file(&megasas_pci_driver.driver,
&driver_attr_release_date);
*/
static void __exit megasas_exit(void)
{
+ driver_remove_file(&megasas_pci_driver.driver,
+ &driver_attr_poll_mode_io);
driver_remove_file(&megasas_pci_driver.driver,
&driver_attr_dbg_lvl);
driver_remove_file(&megasas_pci_driver.driver,
projects / linux-2.6-omap-h63xx.git / blobdiff