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2004 | serge | 1 | /* |
2 | * Copyright 2008 Advanced Micro Devices, Inc. |
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3 | * Copyright 2008 Red Hat Inc. |
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4 | * Copyright 2009 Jerome Glisse. |
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5 | * |
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6 | * Permission is hereby granted, free of charge, to any person obtaining a |
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7 | * copy of this software and associated documentation files (the "Software"), |
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8 | * to deal in the Software without restriction, including without limitation |
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9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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10 | * and/or sell copies of the Software, and to permit persons to whom the |
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11 | * Software is furnished to do so, subject to the following conditions: |
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12 | * |
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13 | * The above copyright notice and this permission notice shall be included in |
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14 | * all copies or substantial portions of the Software. |
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15 | * |
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16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
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20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
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21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
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22 | * OTHER DEALINGS IN THE SOFTWARE. |
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23 | * |
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24 | * Authors: Dave Airlie |
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25 | * Alex Deucher |
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26 | * Jerome Glisse |
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27 | */ |
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2997 | Serge | 28 | #include |
29 | #include |
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30 | #include |
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2004 | serge | 31 | #include "radeon_reg.h" |
32 | #include "radeon.h" |
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33 | #include "atom.h" |
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34 | |||
6104 | serge | 35 | #include |
36 | |||
2997 | Serge | 37 | #define RADEON_WAIT_IDLE_TIMEOUT 200 |
38 | |||
39 | /** |
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40 | * radeon_driver_irq_handler_kms - irq handler for KMS |
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41 | * |
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5078 | serge | 42 | * @int irq, void *arg: args |
2997 | Serge | 43 | * |
44 | * This is the irq handler for the radeon KMS driver (all asics). |
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45 | * radeon_irq_process is a macro that points to the per-asic |
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46 | * irq handler callback. |
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47 | */ |
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5078 | serge | 48 | irqreturn_t radeon_driver_irq_handler_kms(int irq, void *arg) |
2004 | serge | 49 | { |
3120 | serge | 50 | struct drm_device *dev = (struct drm_device *) arg; |
51 | struct radeon_device *rdev = dev->dev_private; |
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52 | |||
53 | return radeon_irq_process(rdev); |
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2004 | serge | 54 | } |
55 | |||
2997 | Serge | 56 | /** |
57 | * radeon_driver_irq_preinstall_kms - drm irq preinstall callback |
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58 | * |
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59 | * @dev: drm dev pointer |
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60 | * |
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61 | * Gets the hw ready to enable irqs (all asics). |
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62 | * This function disables all interrupt sources on the GPU. |
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63 | */ |
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3120 | serge | 64 | void radeon_driver_irq_preinstall_kms(struct drm_device *dev) |
2004 | serge | 65 | { |
3120 | serge | 66 | struct radeon_device *rdev = dev->dev_private; |
2997 | Serge | 67 | unsigned long irqflags; |
6104 | serge | 68 | unsigned i; |
2004 | serge | 69 | |
2997 | Serge | 70 | spin_lock_irqsave(&rdev->irq.lock, irqflags); |
6104 | serge | 71 | /* Disable *all* interrupts */ |
2997 | Serge | 72 | for (i = 0; i < RADEON_NUM_RINGS; i++) |
73 | atomic_set(&rdev->irq.ring_int[i], 0); |
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5078 | serge | 74 | rdev->irq.dpm_thermal = false; |
2997 | Serge | 75 | for (i = 0; i < RADEON_MAX_HPD_PINS; i++) |
76 | rdev->irq.hpd[i] = false; |
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77 | for (i = 0; i < RADEON_MAX_CRTCS; i++) { |
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6104 | serge | 78 | rdev->irq.crtc_vblank_int[i] = false; |
2997 | Serge | 79 | atomic_set(&rdev->irq.pflip[i], 0); |
80 | rdev->irq.afmt[i] = false; |
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6104 | serge | 81 | } |
82 | radeon_irq_set(rdev); |
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2997 | Serge | 83 | spin_unlock_irqrestore(&rdev->irq.lock, irqflags); |
6104 | serge | 84 | /* Clear bits */ |
85 | radeon_irq_process(rdev); |
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2004 | serge | 86 | } |
87 | |||
2997 | Serge | 88 | /** |
89 | * radeon_driver_irq_postinstall_kms - drm irq preinstall callback |
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90 | * |
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91 | * @dev: drm dev pointer |
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92 | * |
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93 | * Handles stuff to be done after enabling irqs (all asics). |
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94 | * Returns 0 on success. |
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95 | */ |
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3120 | serge | 96 | int radeon_driver_irq_postinstall_kms(struct drm_device *dev) |
97 | { |
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6104 | serge | 98 | struct radeon_device *rdev = dev->dev_private; |
99 | |||
100 | if (ASIC_IS_AVIVO(rdev)) |
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101 | dev->max_vblank_count = 0x00ffffff; |
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102 | else |
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103 | dev->max_vblank_count = 0x001fffff; |
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104 | |||
3120 | serge | 105 | return 0; |
106 | } |
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2997 | Serge | 107 | |
3120 | serge | 108 | /** |
109 | * radeon_driver_irq_uninstall_kms - drm irq uninstall callback |
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110 | * |
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111 | * @dev: drm dev pointer |
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112 | * |
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113 | * This function disables all interrupt sources on the GPU (all asics). |
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114 | */ |
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115 | void radeon_driver_irq_uninstall_kms(struct drm_device *dev) |
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2004 | serge | 116 | { |
3120 | serge | 117 | struct radeon_device *rdev = dev->dev_private; |
118 | unsigned long irqflags; |
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119 | unsigned i; |
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2004 | serge | 120 | |
3120 | serge | 121 | if (rdev == NULL) { |
122 | return; |
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123 | } |
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124 | spin_lock_irqsave(&rdev->irq.lock, irqflags); |
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125 | /* Disable *all* interrupts */ |
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126 | for (i = 0; i < RADEON_NUM_RINGS; i++) |
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127 | atomic_set(&rdev->irq.ring_int[i], 0); |
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5078 | serge | 128 | rdev->irq.dpm_thermal = false; |
3120 | serge | 129 | for (i = 0; i < RADEON_MAX_HPD_PINS; i++) |
130 | rdev->irq.hpd[i] = false; |
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131 | for (i = 0; i < RADEON_MAX_CRTCS; i++) { |
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132 | rdev->irq.crtc_vblank_int[i] = false; |
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133 | atomic_set(&rdev->irq.pflip[i], 0); |
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134 | rdev->irq.afmt[i] = false; |
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135 | } |
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3764 | Serge | 136 | radeon_irq_set(rdev); |
3120 | serge | 137 | spin_unlock_irqrestore(&rdev->irq.lock, irqflags); |
2004 | serge | 138 | } |
139 | |||
3120 | serge | 140 | |
141 | |||
2997 | Serge | 142 | /** |
143 | * radeon_irq_kms_init - init driver interrupt info |
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144 | * |
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145 | * @rdev: radeon device pointer |
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146 | * |
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147 | * Sets up the work irq handlers, vblank init, MSIs, etc. (all asics). |
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148 | * Returns 0 for success, error for failure. |
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149 | */ |
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2004 | serge | 150 | int radeon_irq_kms_init(struct radeon_device *rdev) |
151 | { |
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152 | int r = 0; |
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153 | |||
2997 | Serge | 154 | spin_lock_init(&rdev->irq.lock); |
6104 | serge | 155 | r = drm_vblank_init(rdev->ddev, rdev->num_crtc); |
156 | if (r) { |
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157 | return r; |
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158 | } |
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2997 | Serge | 159 | /* enable msi */ |
160 | rdev->msi_enabled = 0; |
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2004 | serge | 161 | |
162 | rdev->irq.installed = true; |
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5078 | serge | 163 | r = drm_irq_install(rdev->ddev, rdev->ddev->pdev->irq); |
2004 | serge | 164 | if (r) { |
165 | rdev->irq.installed = false; |
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3120 | serge | 166 | FAIL(); |
2004 | serge | 167 | return r; |
168 | } |
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5078 | serge | 169 | |
2004 | serge | 170 | DRM_INFO("radeon: irq initialized.\n"); |
171 | return 0; |
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172 | } |
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173 | |||
2997 | Serge | 174 | /** |
3764 | Serge | 175 | * radeon_irq_kms_fini - tear down driver interrupt info |
2997 | Serge | 176 | * |
177 | * @rdev: radeon device pointer |
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178 | * |
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179 | * Tears down the work irq handlers, vblank handlers, MSIs, etc. (all asics). |
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180 | */ |
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181 | void radeon_irq_kms_fini(struct radeon_device *rdev) |
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182 | { |
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6104 | serge | 183 | drm_vblank_cleanup(rdev->ddev); |
2997 | Serge | 184 | if (rdev->irq.installed) { |
185 | // drm_irq_uninstall(rdev->ddev); |
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186 | rdev->irq.installed = false; |
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187 | // if (rdev->msi_enabled) |
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188 | // pci_disable_msi(rdev->pdev); |
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189 | } |
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190 | } |
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2004 | serge | 191 | |
2997 | Serge | 192 | /** |
193 | * radeon_irq_kms_sw_irq_get - enable software interrupt |
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194 | * |
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195 | * @rdev: radeon device pointer |
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196 | * @ring: ring whose interrupt you want to enable |
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197 | * |
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198 | * Enables the software interrupt for a specific ring (all asics). |
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199 | * The software interrupt is generally used to signal a fence on |
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200 | * a particular ring. |
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201 | */ |
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202 | void radeon_irq_kms_sw_irq_get(struct radeon_device *rdev, int ring) |
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2004 | serge | 203 | { |
204 | unsigned long irqflags; |
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205 | |||
2997 | Serge | 206 | if (!rdev->ddev->irq_enabled) |
207 | return; |
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208 | |||
209 | if (atomic_inc_return(&rdev->irq.ring_int[ring]) == 1) { |
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210 | spin_lock_irqsave(&rdev->irq.lock, irqflags); |
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2004 | serge | 211 | radeon_irq_set(rdev); |
2997 | Serge | 212 | spin_unlock_irqrestore(&rdev->irq.lock, irqflags); |
2004 | serge | 213 | } |
214 | } |
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215 | |||
2997 | Serge | 216 | /** |
5271 | serge | 217 | * radeon_irq_kms_sw_irq_get_delayed - enable software interrupt |
218 | * |
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219 | * @rdev: radeon device pointer |
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220 | * @ring: ring whose interrupt you want to enable |
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221 | * |
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222 | * Enables the software interrupt for a specific ring (all asics). |
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223 | * The software interrupt is generally used to signal a fence on |
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224 | * a particular ring. |
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225 | */ |
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226 | bool radeon_irq_kms_sw_irq_get_delayed(struct radeon_device *rdev, int ring) |
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227 | { |
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228 | return atomic_inc_return(&rdev->irq.ring_int[ring]) == 1; |
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229 | } |
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230 | |||
231 | /** |
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2997 | Serge | 232 | * radeon_irq_kms_sw_irq_put - disable software interrupt |
233 | * |
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234 | * @rdev: radeon device pointer |
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235 | * @ring: ring whose interrupt you want to disable |
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236 | * |
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237 | * Disables the software interrupt for a specific ring (all asics). |
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238 | * The software interrupt is generally used to signal a fence on |
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239 | * a particular ring. |
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240 | */ |
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241 | void radeon_irq_kms_sw_irq_put(struct radeon_device *rdev, int ring) |
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2004 | serge | 242 | { |
243 | unsigned long irqflags; |
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244 | |||
2997 | Serge | 245 | if (!rdev->ddev->irq_enabled) |
246 | return; |
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247 | |||
248 | if (atomic_dec_and_test(&rdev->irq.ring_int[ring])) { |
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249 | spin_lock_irqsave(&rdev->irq.lock, irqflags); |
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2004 | serge | 250 | radeon_irq_set(rdev); |
2997 | Serge | 251 | spin_unlock_irqrestore(&rdev->irq.lock, irqflags); |
2004 | serge | 252 | } |
253 | } |
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254 | |||
3120 | serge | 255 | /** |
256 | * radeon_irq_kms_enable_hpd - enable hotplug detect interrupt |
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257 | * |
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258 | * @rdev: radeon device pointer |
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259 | * @hpd_mask: mask of hpd pins you want to enable. |
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260 | * |
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261 | * Enables the hotplug detect interrupt for a specific hpd pin (all asics). |
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262 | */ |
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263 | void radeon_irq_kms_enable_hpd(struct radeon_device *rdev, unsigned hpd_mask) |
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264 | { |
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265 | unsigned long irqflags; |
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266 | int i; |
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2004 | serge | 267 | |
5078 | serge | 268 | if (!rdev->ddev->irq_enabled) |
269 | return; |
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270 | |||
3120 | serge | 271 | spin_lock_irqsave(&rdev->irq.lock, irqflags); |
272 | for (i = 0; i < RADEON_MAX_HPD_PINS; ++i) |
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273 | rdev->irq.hpd[i] |= !!(hpd_mask & (1 << i)); |
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274 | radeon_irq_set(rdev); |
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275 | spin_unlock_irqrestore(&rdev->irq.lock, irqflags); |
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276 | } |
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277 | |||
278 | /** |
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279 | * radeon_irq_kms_disable_hpd - disable hotplug detect interrupt |
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280 | * |
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281 | * @rdev: radeon device pointer |
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282 | * @hpd_mask: mask of hpd pins you want to disable. |
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283 | * |
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284 | * Disables the hotplug detect interrupt for a specific hpd pin (all asics). |
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285 | */ |
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286 | void radeon_irq_kms_disable_hpd(struct radeon_device *rdev, unsigned hpd_mask) |
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287 | { |
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288 | unsigned long irqflags; |
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289 | int i; |
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290 | |||
5078 | serge | 291 | if (!rdev->ddev->irq_enabled) |
292 | return; |
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293 | |||
3120 | serge | 294 | spin_lock_irqsave(&rdev->irq.lock, irqflags); |
295 | for (i = 0; i < RADEON_MAX_HPD_PINS; ++i) |
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296 | rdev->irq.hpd[i] &= !(hpd_mask & (1 << i)); |
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297 | radeon_irq_set(rdev); |
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298 | spin_unlock_irqrestore(&rdev->irq.lock, irqflags); |
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299 | }><>>><>>>>>>>> |
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300 |