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f64122c1 DA |
1 | /* |
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 | ||
e9f0d76f | 28 | irqreturn_t qxl_irq_handler(int irq, void *arg) |
f64122c1 DA |
29 | { |
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 | ||
fbb60fe3 JW |
36 | if (!pending) |
37 | return IRQ_NONE; | |
38 | ||
f64122c1 DA |
39 | 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 | ||
71 | static 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 | ||
79 | int 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; | |
cbdded7f | 93 | ret = drm_irq_install(&qdev->ddev, qdev->ddev.pdev->irq); |
f64122c1 DA |
94 | 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 | } |