blob: 0bf1e20c6e44cee16a4c11b18b7903713e4707a9 [file] [log] [blame]
Dave Airlief64122c2013-02-25 14:47:55 +10001/*
2 * Copyright 2013 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Dave Airlie
23 * Alon Levy
24 */
25
26#include "qxl_drv.h"
27
Daniel Vettere9f0d762013-12-11 11:34:42 +010028irqreturn_t qxl_irq_handler(int irq, void *arg)
Dave Airlief64122c2013-02-25 14:47:55 +100029{
30 struct drm_device *dev = (struct drm_device *) arg;
31 struct qxl_device *qdev = (struct qxl_device *)dev->dev_private;
32 uint32_t pending;
33
34 pending = xchg(&qdev->ram_header->int_pending, 0);
35
Jason Wangfbb60fe2014-05-12 16:35:39 +080036 if (!pending)
37 return IRQ_NONE;
38
Dave Airlief64122c2013-02-25 14:47:55 +100039 atomic_inc(&qdev->irq_received);
40
41 if (pending & QXL_INTERRUPT_DISPLAY) {
42 atomic_inc(&qdev->irq_received_display);
43 wake_up_all(&qdev->display_event);
44 qxl_queue_garbage_collect(qdev, false);
45 }
46 if (pending & QXL_INTERRUPT_CURSOR) {
47 atomic_inc(&qdev->irq_received_cursor);
48 wake_up_all(&qdev->cursor_event);
49 }
50 if (pending & QXL_INTERRUPT_IO_CMD) {
51 atomic_inc(&qdev->irq_received_io_cmd);
52 wake_up_all(&qdev->io_cmd_event);
53 }
54 if (pending & QXL_INTERRUPT_ERROR) {
55 /* TODO: log it, reset device (only way to exit this condition)
56 * (do it a certain number of times, afterwards admit defeat,
57 * to avoid endless loops).
58 */
59 qdev->irq_received_error++;
60 qxl_io_log(qdev, "%s: driver is in bug mode.\n", __func__);
61 }
62 if (pending & QXL_INTERRUPT_CLIENT_MONITORS_CONFIG) {
63 qxl_io_log(qdev, "QXL_INTERRUPT_CLIENT_MONITORS_CONFIG\n");
64 schedule_work(&qdev->client_monitors_config_work);
65 }
66 qdev->ram_header->int_mask = QXL_INTERRUPT_MASK;
67 outb(0, qdev->io_base + QXL_IO_UPDATE_IRQ);
68 return IRQ_HANDLED;
69}
70
71static void qxl_client_monitors_config_work_func(struct work_struct *work)
72{
73 struct qxl_device *qdev = container_of(work, struct qxl_device,
74 client_monitors_config_work);
75
76 qxl_display_read_client_monitors_config(qdev);
77}
78
79int qxl_irq_init(struct qxl_device *qdev)
80{
81 int ret;
82
83 init_waitqueue_head(&qdev->display_event);
84 init_waitqueue_head(&qdev->cursor_event);
85 init_waitqueue_head(&qdev->io_cmd_event);
86 INIT_WORK(&qdev->client_monitors_config_work,
87 qxl_client_monitors_config_work_func);
88 atomic_set(&qdev->irq_received, 0);
89 atomic_set(&qdev->irq_received_display, 0);
90 atomic_set(&qdev->irq_received_cursor, 0);
91 atomic_set(&qdev->irq_received_io_cmd, 0);
92 qdev->irq_received_error = 0;
Daniel Vetterbb0f1b52013-11-03 21:09:27 +010093 ret = drm_irq_install(qdev->ddev, qdev->ddev->pdev->irq);
Dave Airlief64122c2013-02-25 14:47:55 +100094 qdev->ram_header->int_mask = QXL_INTERRUPT_MASK;
95 if (unlikely(ret != 0)) {
96 DRM_ERROR("Failed installing irq: %d\n", ret);
97 return 1;
98 }
99 return 0;
100}