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Rev | Author | Line No. | Line |
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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 | |||
2997 | Serge | 35 | #define RADEON_WAIT_IDLE_TIMEOUT 200 |
36 | |||
2007 | serge | 37 | struct radeon_device *main_device; |
2004 | serge | 38 | |
2160 | serge | 39 | extern int irq_override; |
2004 | serge | 40 | |
2997 | Serge | 41 | |
42 | /** |
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43 | * radeon_driver_irq_handler_kms - irq handler for KMS |
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44 | * |
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45 | * @DRM_IRQ_ARGS: args |
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46 | * |
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47 | * This is the irq handler for the radeon KMS driver (all asics). |
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48 | * radeon_irq_process is a macro that points to the per-asic |
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49 | * irq handler callback. |
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50 | */ |
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2004 | serge | 51 | void irq_handler_kms() |
52 | { |
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53 | radeon_irq_process(main_device); |
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54 | } |
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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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64 | void radeon_irq_preinstall_kms(struct radeon_device *rdev) |
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2004 | serge | 65 | { |
2997 | Serge | 66 | unsigned long irqflags; |
2004 | serge | 67 | unsigned i; |
68 | |||
2997 | Serge | 69 | spin_lock_irqsave(&rdev->irq.lock, irqflags); |
2004 | serge | 70 | /* Disable *all* interrupts */ |
2997 | Serge | 71 | for (i = 0; i < RADEON_NUM_RINGS; i++) |
72 | atomic_set(&rdev->irq.ring_int[i], 0); |
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73 | for (i = 0; i < RADEON_MAX_HPD_PINS; i++) |
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74 | rdev->irq.hpd[i] = false; |
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75 | for (i = 0; i < RADEON_MAX_CRTCS; i++) { |
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2004 | serge | 76 | rdev->irq.crtc_vblank_int[i] = false; |
2997 | Serge | 77 | atomic_set(&rdev->irq.pflip[i], 0); |
78 | rdev->irq.afmt[i] = false; |
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2004 | serge | 79 | } |
80 | radeon_irq_set(rdev); |
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2997 | Serge | 81 | spin_unlock_irqrestore(&rdev->irq.lock, irqflags); |
2004 | serge | 82 | /* Clear bits */ |
83 | radeon_irq_process(rdev); |
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84 | } |
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85 | |||
2997 | Serge | 86 | /** |
87 | * radeon_driver_irq_postinstall_kms - drm irq preinstall callback |
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88 | * |
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89 | * @dev: drm dev pointer |
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90 | * |
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91 | * Handles stuff to be done after enabling irqs (all asics). |
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92 | * Returns 0 on success. |
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93 | */ |
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94 | |||
95 | int radeon_driver_irq_postinstall_kms(struct radeon_device *rdev) |
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2004 | serge | 96 | { |
97 | // struct radeon_device *rdev = dev->dev_private; |
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98 | |||
99 | // dev->max_vblank_count = 0x001fffff; |
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2997 | Serge | 100 | |
2004 | serge | 101 | radeon_irq_set(rdev); |
102 | return 0; |
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103 | } |
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104 | |||
2997 | Serge | 105 | /** |
106 | * radeon_irq_kms_init - init driver interrupt info |
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107 | * |
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108 | * @rdev: radeon device pointer |
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109 | * |
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110 | * Sets up the work irq handlers, vblank init, MSIs, etc. (all asics). |
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111 | * Returns 0 for success, error for failure. |
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112 | */ |
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2004 | serge | 113 | int radeon_irq_kms_init(struct radeon_device *rdev) |
114 | { |
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115 | int irq_line; |
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116 | int r = 0; |
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117 | |||
118 | ENTER(); |
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119 | |||
2997 | Serge | 120 | // INIT_WORK(&rdev->hotplug_work, radeon_hotplug_work_func); |
121 | // INIT_WORK(&rdev->audio_work, r600_audio_update_hdmi); |
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2004 | serge | 122 | |
2997 | Serge | 123 | spin_lock_init(&rdev->irq.lock); |
2004 | serge | 124 | // r = drm_vblank_init(rdev->ddev, rdev->num_crtc); |
125 | // if (r) { |
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126 | // return r; |
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127 | // } |
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2997 | Serge | 128 | /* enable msi */ |
129 | rdev->msi_enabled = 0; |
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2004 | serge | 130 | |
2997 | Serge | 131 | // if (radeon_msi_ok(rdev)) { |
132 | // int ret = pci_enable_msi(rdev->pdev); |
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133 | // if (!ret) { |
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134 | // rdev->msi_enabled = 1; |
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135 | // dev_info(rdev->dev, "radeon: using MSI.\n"); |
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136 | // } |
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137 | // } |
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2004 | serge | 138 | rdev->irq.installed = true; |
139 | main_device = rdev; |
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140 | |||
2997 | Serge | 141 | radeon_irq_preinstall_kms(rdev); |
2004 | serge | 142 | |
2160 | serge | 143 | if (irq_override) |
144 | irq_line = irq_override; |
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145 | else |
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146 | irq_line = rdev->pdev->irq; |
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2004 | serge | 147 | |
148 | dbgprintf("%s install irq %d\n", __FUNCTION__, irq_line); |
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149 | |||
150 | AttachIntHandler(irq_line, irq_handler_kms, 2); |
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151 | |||
152 | // r = drm_irq_install(rdev->ddev); |
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153 | |||
2997 | Serge | 154 | r = radeon_driver_irq_postinstall_kms(rdev); |
2004 | serge | 155 | if (r) { |
156 | rdev->irq.installed = false; |
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157 | LEAVE(); |
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158 | return r; |
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159 | } |
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160 | DRM_INFO("radeon: irq initialized.\n"); |
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161 | return 0; |
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162 | } |
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163 | |||
2997 | Serge | 164 | /** |
165 | * radeon_irq_kms_fini - tear down driver interrrupt info |
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166 | * |
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167 | * @rdev: radeon device pointer |
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168 | * |
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169 | * Tears down the work irq handlers, vblank handlers, MSIs, etc. (all asics). |
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170 | */ |
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171 | void radeon_irq_kms_fini(struct radeon_device *rdev) |
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172 | { |
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173 | // drm_vblank_cleanup(rdev->ddev); |
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174 | if (rdev->irq.installed) { |
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175 | // drm_irq_uninstall(rdev->ddev); |
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176 | rdev->irq.installed = false; |
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177 | // if (rdev->msi_enabled) |
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178 | // pci_disable_msi(rdev->pdev); |
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179 | } |
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180 | // flush_work(&rdev->hotplug_work); |
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181 | } |
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2004 | serge | 182 | |
2997 | Serge | 183 | /** |
184 | * radeon_irq_kms_sw_irq_get - enable software interrupt |
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185 | * |
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186 | * @rdev: radeon device pointer |
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187 | * @ring: ring whose interrupt you want to enable |
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188 | * |
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189 | * Enables the software interrupt for a specific ring (all asics). |
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190 | * The software interrupt is generally used to signal a fence on |
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191 | * a particular ring. |
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192 | */ |
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193 | void radeon_irq_kms_sw_irq_get(struct radeon_device *rdev, int ring) |
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2004 | serge | 194 | { |
195 | unsigned long irqflags; |
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196 | |||
2997 | Serge | 197 | if (!rdev->ddev->irq_enabled) |
198 | return; |
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199 | |||
200 | if (atomic_inc_return(&rdev->irq.ring_int[ring]) == 1) { |
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201 | spin_lock_irqsave(&rdev->irq.lock, irqflags); |
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2004 | serge | 202 | radeon_irq_set(rdev); |
2997 | Serge | 203 | spin_unlock_irqrestore(&rdev->irq.lock, irqflags); |
2004 | serge | 204 | } |
205 | } |
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206 | |||
2997 | Serge | 207 | /** |
208 | * radeon_irq_kms_sw_irq_put - disable software interrupt |
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209 | * |
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210 | * @rdev: radeon device pointer |
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211 | * @ring: ring whose interrupt you want to disable |
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212 | * |
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213 | * Disables the software interrupt for a specific ring (all asics). |
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214 | * The software interrupt is generally used to signal a fence on |
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215 | * a particular ring. |
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216 | */ |
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217 | void radeon_irq_kms_sw_irq_put(struct radeon_device *rdev, int ring) |
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2004 | serge | 218 | { |
219 | unsigned long irqflags; |
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220 | |||
2997 | Serge | 221 | if (!rdev->ddev->irq_enabled) |
222 | return; |
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223 | |||
224 | if (atomic_dec_and_test(&rdev->irq.ring_int[ring])) { |
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225 | spin_lock_irqsave(&rdev->irq.lock, irqflags); |
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2004 | serge | 226 | radeon_irq_set(rdev); |
2997 | Serge | 227 | spin_unlock_irqrestore(&rdev->irq.lock, irqflags); |
2004 | serge | 228 | } |
229 | }>>> |
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230 |