mei: move interrupt handlers to be me hw specific
interrupt handler are platform specifics so we move
them to hw-mei.c. For sake of that we need to export
write, read, and complete handlers from the interrupt.c
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c
index 431aa91..3535b26 100644
--- a/drivers/misc/mei/interrupt.c
+++ b/drivers/misc/mei/interrupt.c
@@ -30,12 +30,12 @@
/**
- * _mei_cmpl - processes completed operation.
+ * mei_complete_handler - processes completed operation.
*
* @cl: private data of the file object.
* @cb_pos: callback block.
*/
-static void _mei_cmpl(struct mei_cl *cl, struct mei_cl_cb *cb_pos)
+void mei_irq_complete_handler(struct mei_cl *cl, struct mei_cl_cb *cb_pos)
{
if (cb_pos->fop_type == MEI_FOP_WRITE) {
mei_io_cb_free(cb_pos);
@@ -313,15 +313,14 @@
* mei_irq_thread_read_handler - bottom half read routine after ISR to
* handle the read processing.
*
- * @cmpl_list: An instance of our list structure
* @dev: the device structure
+ * @cmpl_list: An instance of our list structure
* @slots: slots to read.
*
* returns 0 on success, <0 on failure.
*/
-static int mei_irq_thread_read_handler(struct mei_cl_cb *cmpl_list,
- struct mei_device *dev,
- s32 *slots)
+int mei_irq_read_handler(struct mei_device *dev,
+ struct mei_cl_cb *cmpl_list, s32 *slots)
{
struct mei_msg_hdr *mei_hdr;
struct mei_cl *cl_pos = NULL;
@@ -412,15 +411,15 @@
/**
- * mei_irq_thread_write_handler - bottom half write routine after
- * ISR to handle the write processing.
+ * mei_irq_write_handler - dispatch write requests
+ * after irq received
*
* @dev: the device structure
* @cmpl_list: An instance of our list structure
*
* returns 0 on success, <0 on failure.
*/
-static int mei_irq_thread_write_handler(struct mei_device *dev,
+int mei_irq_write_handler(struct mei_device *dev,
struct mei_cl_cb *cmpl_list)
{
@@ -666,112 +665,3 @@
mutex_unlock(&dev->device_lock);
}
-/**
- * mei_interrupt_thread_handler - function called after ISR to handle the interrupt
- * processing.
- *
- * @irq: The irq number
- * @dev_id: pointer to the device structure
- *
- * returns irqreturn_t
- *
- */
-irqreturn_t mei_interrupt_thread_handler(int irq, void *dev_id)
-{
- struct mei_device *dev = (struct mei_device *) dev_id;
- struct mei_cl_cb complete_list;
- struct mei_cl_cb *cb_pos = NULL, *cb_next = NULL;
- struct mei_cl *cl;
- s32 slots;
- int rets;
- bool bus_message_received;
-
-
- dev_dbg(&dev->pdev->dev, "function called after ISR to handle the interrupt processing.\n");
- /* initialize our complete list */
- mutex_lock(&dev->device_lock);
- mei_io_list_init(&complete_list);
-
- /* Ack the interrupt here
- * In case of MSI we don't go through the quick handler */
- if (pci_dev_msi_enabled(dev->pdev))
- mei_clear_interrupts(dev);
-
- /* check if ME wants a reset */
- if (!mei_hw_is_ready(dev) &&
- dev->dev_state != MEI_DEV_RESETING &&
- dev->dev_state != MEI_DEV_INITIALIZING) {
- dev_dbg(&dev->pdev->dev, "FW not ready.\n");
- mei_reset(dev, 1);
- mutex_unlock(&dev->device_lock);
- return IRQ_HANDLED;
- }
-
- /* check if we need to start the dev */
- if (!mei_host_is_ready(dev)) {
- if (mei_hw_is_ready(dev)) {
- dev_dbg(&dev->pdev->dev, "we need to start the dev.\n");
-
- mei_host_set_ready(dev);
-
- dev_dbg(&dev->pdev->dev, "link is established start sending messages.\n");
- /* link is established * start sending messages. */
-
- dev->dev_state = MEI_DEV_INIT_CLIENTS;
-
- mei_hbm_start_req(dev);
- mutex_unlock(&dev->device_lock);
- return IRQ_HANDLED;
- } else {
- dev_dbg(&dev->pdev->dev, "FW not ready.\n");
- mutex_unlock(&dev->device_lock);
- return IRQ_HANDLED;
- }
- }
- /* check slots available for reading */
- slots = mei_count_full_read_slots(dev);
- while (slots > 0) {
- /* we have urgent data to send so break the read */
- if (dev->wr_ext_msg.hdr.length)
- break;
- dev_dbg(&dev->pdev->dev, "slots =%08x\n", slots);
- dev_dbg(&dev->pdev->dev, "call mei_irq_thread_read_handler.\n");
- rets = mei_irq_thread_read_handler(&complete_list, dev, &slots);
- if (rets)
- goto end;
- }
- rets = mei_irq_thread_write_handler(dev, &complete_list);
-end:
- dev_dbg(&dev->pdev->dev, "end of bottom half function.\n");
- dev->mei_host_buffer_is_empty = mei_hbuf_is_ready(dev);
-
- bus_message_received = false;
- if (dev->recvd_msg && waitqueue_active(&dev->wait_recvd_msg)) {
- dev_dbg(&dev->pdev->dev, "received waiting bus message\n");
- bus_message_received = true;
- }
- mutex_unlock(&dev->device_lock);
- if (bus_message_received) {
- dev_dbg(&dev->pdev->dev, "wake up dev->wait_recvd_msg\n");
- wake_up_interruptible(&dev->wait_recvd_msg);
- bus_message_received = false;
- }
- if (list_empty(&complete_list.list))
- return IRQ_HANDLED;
-
-
- list_for_each_entry_safe(cb_pos, cb_next, &complete_list.list, list) {
- cl = cb_pos->cl;
- list_del(&cb_pos->list);
- if (cl) {
- if (cl != &dev->iamthif_cl) {
- dev_dbg(&dev->pdev->dev, "completing call back.\n");
- _mei_cmpl(cl, cb_pos);
- cb_pos = NULL;
- } else if (cl == &dev->iamthif_cl) {
- mei_amthif_complete(dev, cb_pos);
- }
- }
- }
- return IRQ_HANDLED;
-}