diff options
Diffstat (limited to 'drivers/staging/mei/interrupt.c')
| -rw-r--r-- | drivers/staging/mei/interrupt.c | 85 |
1 files changed, 54 insertions, 31 deletions
diff --git a/drivers/staging/mei/interrupt.c b/drivers/staging/mei/interrupt.c index 9cb186bf1874..882d106d54e5 100644 --- a/drivers/staging/mei/interrupt.c +++ b/drivers/staging/mei/interrupt.c @@ -396,6 +396,18 @@ static void mei_client_connect_response(struct mei_device *dev, dev->wd_due_counter = (dev->wd_timeout) ? 1 : 0; dev_dbg(&dev->pdev->dev, "successfully connected to WD client.\n"); + + /* Registering watchdog interface device once we got connection + to the WD Client + */ + if (watchdog_register_device(&amt_wd_dev)) { + printk(KERN_ERR "mei: unable to register watchdog device.\n"); + dev->wd_interface_reg = false; + } else { + dev_dbg(&dev->pdev->dev, "successfully register watchdog interface.\n"); + dev->wd_interface_reg = true; + } + mei_host_init_iamthif(dev); return; } @@ -641,6 +653,7 @@ static void mei_irq_thread_read_bus_message(struct mei_device *dev, struct hbm_host_enum_response *enum_res; struct hbm_client_disconnect_request *disconnect_req; struct hbm_host_stop_request *host_stop_req; + int res; unsigned char *buffer; @@ -734,7 +747,38 @@ static void mei_irq_thread_read_bus_message(struct mei_device *dev, MEI_CLIENT_PROPERTIES_MESSAGE) { dev->me_client_index++; dev->me_client_presentation_num++; - mei_host_client_properties(dev); + + /** Send Client Propeties request **/ + res = mei_host_client_properties(dev); + if (res < 0) { + dev_dbg(&dev->pdev->dev, "mei_host_client_properties() failed"); + return; + } else if (!res) { + /* + * No more clients to send to. + * Clear Map for indicating now ME clients + * with associated host client + */ + bitmap_zero(dev->host_clients_map, MEI_CLIENTS_MAX); + dev->open_handle_count = 0; + + /* + * Reserving the first three client IDs + * Client Id 0 - Reserved for MEI Bus Message communications + * Client Id 1 - Reserved for Watchdog + * Client ID 2 - Reserved for AMTHI + */ + bitmap_set(dev->host_clients_map, 0, 3); + dev->mei_state = MEI_ENABLED; + + /* if wd initialization fails, initialization the AMTHI client, + * otherwise the AMTHI client will be initialized after the WD client connect response + * will be received + */ + if (mei_wd_host_init(dev)) + mei_host_init_iamthif(dev); + } + } else { dev_dbg(&dev->pdev->dev, "reset due to received host client properties response bus message"); mei_reset(dev, 1); @@ -1381,7 +1425,7 @@ static int mei_irq_thread_write_handler(struct mei_io_list *cmpl_list, * * NOTE: This function is called by timer interrupt work */ -void mei_wd_timer(struct work_struct *work) +void mei_timer(struct work_struct *work) { unsigned long timeout; struct mei_cl *cl_pos = NULL; @@ -1391,7 +1435,7 @@ void mei_wd_timer(struct work_struct *work) struct mei_cl_cb *cb_next = NULL; struct mei_device *dev = container_of(work, - struct mei_device, wd_work.work); + struct mei_device, timer_work.work); mutex_lock(&dev->device_lock); @@ -1418,33 +1462,6 @@ void mei_wd_timer(struct work_struct *work) } } - if (dev->wd_cl.state != MEI_FILE_CONNECTED) - goto out; - - /* Watchdog */ - if (dev->wd_due_counter && !dev->wd_bypass) { - if (--dev->wd_due_counter == 0) { - if (dev->mei_host_buffer_is_empty && - mei_flow_ctrl_creds(dev, &dev->wd_cl) > 0) { - dev->mei_host_buffer_is_empty = false; - dev_dbg(&dev->pdev->dev, "send watchdog.\n"); - - if (mei_wd_send(dev)) - dev_dbg(&dev->pdev->dev, "wd send failed.\n"); - else - if (mei_flow_ctrl_reduce(dev, &dev->wd_cl)) - goto out; - - if (dev->wd_timeout) - dev->wd_due_counter = 2; - else - dev->wd_due_counter = 0; - - } else - dev->wd_pending = true; - - } - } if (dev->iamthif_stall_timer) { if (--dev->iamthif_stall_timer == 0) { dev_dbg(&dev->pdev->dev, "reseting because of hang to amthi.\n"); @@ -1510,7 +1527,7 @@ void mei_wd_timer(struct work_struct *work) } } out: - schedule_delayed_work(&dev->wd_work, 2 * HZ); + schedule_delayed_work(&dev->timer_work, 2 * HZ); mutex_unlock(&dev->device_lock); } @@ -1540,6 +1557,12 @@ irqreturn_t mei_interrupt_thread_handler(int irq, void *dev_id) mutex_lock(&dev->device_lock); mei_io_list_init(&complete_list); dev->host_hw_state = mei_hcsr_read(dev); + + /* Ack the interrupt here + * In case of MSI we don't go throuhg the quick handler */ + if (pci_dev_msi_enabled(dev->pdev)) + mei_reg_write(dev, H_CSR, dev->host_hw_state); + dev->me_hw_state = mei_mecsr_read(dev); /* check if ME wants a reset */ |