101 lines
3.3 KiB
C
101 lines
3.3 KiB
C
/*
|
|
* Copyright 2013 Red Hat Inc.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
|
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
* Authors: Dave Airlie
|
|
* Alon Levy
|
|
*/
|
|
|
|
#include "qxl_drv.h"
|
|
|
|
irqreturn_t qxl_irq_handler(int irq, void *arg)
|
|
{
|
|
struct drm_device *dev = (struct drm_device *) arg;
|
|
struct qxl_device *qdev = (struct qxl_device *)dev->dev_private;
|
|
uint32_t pending;
|
|
|
|
pending = xchg(&qdev->ram_header->int_pending, 0);
|
|
|
|
if (!pending)
|
|
return IRQ_NONE;
|
|
|
|
atomic_inc(&qdev->irq_received);
|
|
|
|
if (pending & QXL_INTERRUPT_DISPLAY) {
|
|
atomic_inc(&qdev->irq_received_display);
|
|
wake_up_all(&qdev->display_event);
|
|
qxl_queue_garbage_collect(qdev, false);
|
|
}
|
|
if (pending & QXL_INTERRUPT_CURSOR) {
|
|
atomic_inc(&qdev->irq_received_cursor);
|
|
wake_up_all(&qdev->cursor_event);
|
|
}
|
|
if (pending & QXL_INTERRUPT_IO_CMD) {
|
|
atomic_inc(&qdev->irq_received_io_cmd);
|
|
wake_up_all(&qdev->io_cmd_event);
|
|
}
|
|
if (pending & QXL_INTERRUPT_ERROR) {
|
|
/* TODO: log it, reset device (only way to exit this condition)
|
|
* (do it a certain number of times, afterwards admit defeat,
|
|
* to avoid endless loops).
|
|
*/
|
|
qdev->irq_received_error++;
|
|
qxl_io_log(qdev, "%s: driver is in bug mode.\n", __func__);
|
|
}
|
|
if (pending & QXL_INTERRUPT_CLIENT_MONITORS_CONFIG) {
|
|
qxl_io_log(qdev, "QXL_INTERRUPT_CLIENT_MONITORS_CONFIG\n");
|
|
schedule_work(&qdev->client_monitors_config_work);
|
|
}
|
|
qdev->ram_header->int_mask = QXL_INTERRUPT_MASK;
|
|
outb(0, qdev->io_base + QXL_IO_UPDATE_IRQ);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void qxl_client_monitors_config_work_func(struct work_struct *work)
|
|
{
|
|
struct qxl_device *qdev = container_of(work, struct qxl_device,
|
|
client_monitors_config_work);
|
|
|
|
qxl_display_read_client_monitors_config(qdev);
|
|
}
|
|
|
|
int qxl_irq_init(struct qxl_device *qdev)
|
|
{
|
|
int ret;
|
|
|
|
init_waitqueue_head(&qdev->display_event);
|
|
init_waitqueue_head(&qdev->cursor_event);
|
|
init_waitqueue_head(&qdev->io_cmd_event);
|
|
INIT_WORK(&qdev->client_monitors_config_work,
|
|
qxl_client_monitors_config_work_func);
|
|
atomic_set(&qdev->irq_received, 0);
|
|
atomic_set(&qdev->irq_received_display, 0);
|
|
atomic_set(&qdev->irq_received_cursor, 0);
|
|
atomic_set(&qdev->irq_received_io_cmd, 0);
|
|
qdev->irq_received_error = 0;
|
|
ret = drm_irq_install(qdev->ddev, qdev->ddev->pdev->irq);
|
|
qdev->ram_header->int_mask = QXL_INTERRUPT_MASK;
|
|
if (unlikely(ret != 0)) {
|
|
DRM_ERROR("Failed installing irq: %d\n", ret);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|