Jerome Glisse | 771fe6b | 2009-06-05 14:42:42 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2008 Advanced Micro Devices, Inc. |
| 3 | * Copyright 2008 Red Hat Inc. |
| 4 | * Copyright 2009 Jerome Glisse. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 7 | * copy of this software and associated documentation files (the "Software"), |
| 8 | * to deal in the Software without restriction, including without limitation |
| 9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 10 | * and/or sell copies of the Software, and to permit persons to whom the |
| 11 | * Software is furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 22 | * OTHER DEALINGS IN THE SOFTWARE. |
| 23 | * |
| 24 | * Authors: Dave Airlie |
| 25 | * Alex Deucher |
| 26 | * Jerome Glisse |
| 27 | */ |
| 28 | #include "drmP.h" |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 29 | #include "drm_crtc_helper.h" |
Jerome Glisse | 771fe6b | 2009-06-05 14:42:42 +0200 | [diff] [blame] | 30 | #include "radeon_drm.h" |
| 31 | #include "radeon_reg.h" |
Jerome Glisse | 771fe6b | 2009-06-05 14:42:42 +0200 | [diff] [blame] | 32 | #include "radeon.h" |
| 33 | #include "atom.h" |
| 34 | |
Jerome Glisse | 771fe6b | 2009-06-05 14:42:42 +0200 | [diff] [blame] | 35 | irqreturn_t radeon_driver_irq_handler_kms(DRM_IRQ_ARGS) |
| 36 | { |
| 37 | struct drm_device *dev = (struct drm_device *) arg; |
| 38 | struct radeon_device *rdev = dev->dev_private; |
| 39 | |
| 40 | return radeon_irq_process(rdev); |
| 41 | } |
| 42 | |
Alex Deucher | d4877cf | 2009-12-04 16:56:37 -0500 | [diff] [blame] | 43 | /* |
| 44 | * Handle hotplug events outside the interrupt handler proper. |
| 45 | */ |
| 46 | static void radeon_hotplug_work_func(struct work_struct *work) |
| 47 | { |
| 48 | struct radeon_device *rdev = container_of(work, struct radeon_device, |
| 49 | hotplug_work); |
| 50 | struct drm_device *dev = rdev->ddev; |
| 51 | struct drm_mode_config *mode_config = &dev->mode_config; |
| 52 | struct drm_connector *connector; |
| 53 | |
| 54 | if (mode_config->num_connector) { |
| 55 | list_for_each_entry(connector, &mode_config->connector_list, head) |
| 56 | radeon_connector_hotplug(connector); |
| 57 | } |
| 58 | /* Just fire off a uevent and let userspace tell us what to do */ |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 59 | drm_helper_hpd_irq_event(dev); |
Alex Deucher | d4877cf | 2009-12-04 16:56:37 -0500 | [diff] [blame] | 60 | } |
| 61 | |
Jerome Glisse | 771fe6b | 2009-06-05 14:42:42 +0200 | [diff] [blame] | 62 | void radeon_driver_irq_preinstall_kms(struct drm_device *dev) |
| 63 | { |
| 64 | struct radeon_device *rdev = dev->dev_private; |
| 65 | unsigned i; |
| 66 | |
Alex Deucher | d4877cf | 2009-12-04 16:56:37 -0500 | [diff] [blame] | 67 | INIT_WORK(&rdev->hotplug_work, radeon_hotplug_work_func); |
| 68 | |
Jerome Glisse | 771fe6b | 2009-06-05 14:42:42 +0200 | [diff] [blame] | 69 | /* Disable *all* interrupts */ |
| 70 | rdev->irq.sw_int = false; |
Alex Deucher | 9e7b414 | 2010-03-16 17:08:06 -0400 | [diff] [blame] | 71 | for (i = 0; i < rdev->num_crtc; i++) |
Jerome Glisse | 771fe6b | 2009-06-05 14:42:42 +0200 | [diff] [blame] | 72 | rdev->irq.crtc_vblank_int[i] = false; |
Alex Deucher | 9e7b414 | 2010-03-16 17:08:06 -0400 | [diff] [blame] | 73 | for (i = 0; i < 6; i++) |
| 74 | rdev->irq.hpd[i] = false; |
Jerome Glisse | 771fe6b | 2009-06-05 14:42:42 +0200 | [diff] [blame] | 75 | radeon_irq_set(rdev); |
| 76 | /* Clear bits */ |
| 77 | radeon_irq_process(rdev); |
| 78 | } |
| 79 | |
| 80 | int radeon_driver_irq_postinstall_kms(struct drm_device *dev) |
| 81 | { |
| 82 | struct radeon_device *rdev = dev->dev_private; |
| 83 | |
| 84 | dev->max_vblank_count = 0x001fffff; |
| 85 | rdev->irq.sw_int = true; |
| 86 | radeon_irq_set(rdev); |
| 87 | return 0; |
| 88 | } |
| 89 | |
| 90 | void radeon_driver_irq_uninstall_kms(struct drm_device *dev) |
| 91 | { |
| 92 | struct radeon_device *rdev = dev->dev_private; |
| 93 | unsigned i; |
| 94 | |
| 95 | if (rdev == NULL) { |
| 96 | return; |
| 97 | } |
| 98 | /* Disable *all* interrupts */ |
| 99 | rdev->irq.sw_int = false; |
Alex Deucher | 9e7b414 | 2010-03-16 17:08:06 -0400 | [diff] [blame] | 100 | for (i = 0; i < rdev->num_crtc; i++) |
Jerome Glisse | 771fe6b | 2009-06-05 14:42:42 +0200 | [diff] [blame] | 101 | rdev->irq.crtc_vblank_int[i] = false; |
Alex Deucher | 9e7b414 | 2010-03-16 17:08:06 -0400 | [diff] [blame] | 102 | for (i = 0; i < 6; i++) |
Jerome Glisse | 003e69f | 2010-01-07 15:39:14 +0100 | [diff] [blame] | 103 | rdev->irq.hpd[i] = false; |
Jerome Glisse | 771fe6b | 2009-06-05 14:42:42 +0200 | [diff] [blame] | 104 | radeon_irq_set(rdev); |
| 105 | } |
| 106 | |
| 107 | int radeon_irq_kms_init(struct radeon_device *rdev) |
| 108 | { |
| 109 | int r = 0; |
| 110 | |
Dave Airlie | 1614f8b | 2009-12-01 16:04:56 +1000 | [diff] [blame] | 111 | spin_lock_init(&rdev->irq.sw_lock); |
Alex Deucher | 9e7b414 | 2010-03-16 17:08:06 -0400 | [diff] [blame] | 112 | r = drm_vblank_init(rdev->ddev, rdev->num_crtc); |
Jerome Glisse | 771fe6b | 2009-06-05 14:42:42 +0200 | [diff] [blame] | 113 | if (r) { |
| 114 | return r; |
| 115 | } |
Alex Deucher | 3e5cb98 | 2009-10-16 12:21:24 -0400 | [diff] [blame] | 116 | /* enable msi */ |
| 117 | rdev->msi_enabled = 0; |
Alex Deucher | c414a11 | 2010-03-30 17:22:32 -0400 | [diff] [blame] | 118 | /* MSIs don't seem to work reliably on all IGP |
| 119 | * chips. Disable MSI on them for now. |
Alex Deucher | d8f60cf | 2009-12-01 13:43:46 -0500 | [diff] [blame] | 120 | */ |
| 121 | if ((rdev->family >= CHIP_RV380) && |
Alex Deucher | c414a11 | 2010-03-30 17:22:32 -0400 | [diff] [blame] | 122 | (!(rdev->flags & RADEON_IS_IGP))) { |
Alex Deucher | 3e5cb98 | 2009-10-16 12:21:24 -0400 | [diff] [blame] | 123 | int ret = pci_enable_msi(rdev->pdev); |
Alex Deucher | d8f60cf | 2009-12-01 13:43:46 -0500 | [diff] [blame] | 124 | if (!ret) { |
Alex Deucher | 3e5cb98 | 2009-10-16 12:21:24 -0400 | [diff] [blame] | 125 | rdev->msi_enabled = 1; |
Alex Deucher | d8f60cf | 2009-12-01 13:43:46 -0500 | [diff] [blame] | 126 | DRM_INFO("radeon: using MSI.\n"); |
| 127 | } |
Alex Deucher | 3e5cb98 | 2009-10-16 12:21:24 -0400 | [diff] [blame] | 128 | } |
Jerome Glisse | 771fe6b | 2009-06-05 14:42:42 +0200 | [diff] [blame] | 129 | rdev->irq.installed = true; |
Jerome Glisse | 003e69f | 2010-01-07 15:39:14 +0100 | [diff] [blame] | 130 | r = drm_irq_install(rdev->ddev); |
| 131 | if (r) { |
| 132 | rdev->irq.installed = false; |
| 133 | return r; |
| 134 | } |
Jerome Glisse | 771fe6b | 2009-06-05 14:42:42 +0200 | [diff] [blame] | 135 | DRM_INFO("radeon: irq initialized.\n"); |
| 136 | return 0; |
| 137 | } |
| 138 | |
| 139 | void radeon_irq_kms_fini(struct radeon_device *rdev) |
| 140 | { |
Jerome Glisse | 003e69f | 2010-01-07 15:39:14 +0100 | [diff] [blame] | 141 | drm_vblank_cleanup(rdev->ddev); |
Jerome Glisse | 771fe6b | 2009-06-05 14:42:42 +0200 | [diff] [blame] | 142 | if (rdev->irq.installed) { |
Jerome Glisse | 771fe6b | 2009-06-05 14:42:42 +0200 | [diff] [blame] | 143 | drm_irq_uninstall(rdev->ddev); |
Jerome Glisse | 003e69f | 2010-01-07 15:39:14 +0100 | [diff] [blame] | 144 | rdev->irq.installed = false; |
Alex Deucher | 3e5cb98 | 2009-10-16 12:21:24 -0400 | [diff] [blame] | 145 | if (rdev->msi_enabled) |
| 146 | pci_disable_msi(rdev->pdev); |
Jerome Glisse | 771fe6b | 2009-06-05 14:42:42 +0200 | [diff] [blame] | 147 | } |
| 148 | } |
Dave Airlie | 1614f8b | 2009-12-01 16:04:56 +1000 | [diff] [blame] | 149 | |
| 150 | void radeon_irq_kms_sw_irq_get(struct radeon_device *rdev) |
| 151 | { |
| 152 | unsigned long irqflags; |
| 153 | |
| 154 | spin_lock_irqsave(&rdev->irq.sw_lock, irqflags); |
| 155 | if (rdev->ddev->irq_enabled && (++rdev->irq.sw_refcount == 1)) { |
| 156 | rdev->irq.sw_int = true; |
| 157 | radeon_irq_set(rdev); |
| 158 | } |
| 159 | spin_unlock_irqrestore(&rdev->irq.sw_lock, irqflags); |
| 160 | } |
| 161 | |
| 162 | void radeon_irq_kms_sw_irq_put(struct radeon_device *rdev) |
| 163 | { |
| 164 | unsigned long irqflags; |
| 165 | |
| 166 | spin_lock_irqsave(&rdev->irq.sw_lock, irqflags); |
| 167 | BUG_ON(rdev->ddev->irq_enabled && rdev->irq.sw_refcount <= 0); |
| 168 | if (rdev->ddev->irq_enabled && (--rdev->irq.sw_refcount == 0)) { |
| 169 | rdev->irq.sw_int = false; |
| 170 | radeon_irq_set(rdev); |
| 171 | } |
| 172 | spin_unlock_irqrestore(&rdev->irq.sw_lock, irqflags); |
| 173 | } |
| 174 | |