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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 | |||
2004 | serge | 37 | |
2160 | serge | 38 | extern int irq_override; |
2004 | serge | 39 | |
2997 | Serge | 40 | |
41 | /** |
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42 | * radeon_driver_irq_handler_kms - irq handler for KMS |
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43 | * |
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5078 | serge | 44 | * @int irq, void *arg: args |
2997 | Serge | 45 | * |
46 | * This is the irq handler for the radeon KMS driver (all asics). |
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47 | * radeon_irq_process is a macro that points to the per-asic |
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48 | * irq handler callback. |
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49 | */ |
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5078 | serge | 50 | irqreturn_t radeon_driver_irq_handler_kms(int irq, void *arg) |
2004 | serge | 51 | { |
3120 | serge | 52 | struct drm_device *dev = (struct drm_device *) arg; |
53 | struct radeon_device *rdev = dev->dev_private; |
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54 | |||
55 | return radeon_irq_process(rdev); |
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2004 | serge | 56 | } |
57 | |||
2997 | Serge | 58 | /** |
59 | * radeon_driver_irq_preinstall_kms - drm irq preinstall callback |
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60 | * |
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61 | * @dev: drm dev pointer |
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62 | * |
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63 | * Gets the hw ready to enable irqs (all asics). |
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64 | * This function disables all interrupt sources on the GPU. |
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65 | */ |
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3120 | serge | 66 | void radeon_driver_irq_preinstall_kms(struct drm_device *dev) |
2004 | serge | 67 | { |
3120 | serge | 68 | struct radeon_device *rdev = dev->dev_private; |
2997 | Serge | 69 | unsigned long irqflags; |
2004 | serge | 70 | unsigned i; |
71 | |||
2997 | Serge | 72 | spin_lock_irqsave(&rdev->irq.lock, irqflags); |
2004 | serge | 73 | /* Disable *all* interrupts */ |
2997 | Serge | 74 | for (i = 0; i < RADEON_NUM_RINGS; i++) |
75 | atomic_set(&rdev->irq.ring_int[i], 0); |
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5078 | serge | 76 | rdev->irq.dpm_thermal = false; |
2997 | Serge | 77 | for (i = 0; i < RADEON_MAX_HPD_PINS; i++) |
78 | rdev->irq.hpd[i] = false; |
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79 | for (i = 0; i < RADEON_MAX_CRTCS; i++) { |
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2004 | serge | 80 | rdev->irq.crtc_vblank_int[i] = false; |
2997 | Serge | 81 | atomic_set(&rdev->irq.pflip[i], 0); |
82 | rdev->irq.afmt[i] = false; |
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2004 | serge | 83 | } |
84 | radeon_irq_set(rdev); |
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2997 | Serge | 85 | spin_unlock_irqrestore(&rdev->irq.lock, irqflags); |
2004 | serge | 86 | /* Clear bits */ |
87 | radeon_irq_process(rdev); |
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88 | } |
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89 | |||
2997 | Serge | 90 | /** |
91 | * radeon_driver_irq_postinstall_kms - drm irq preinstall callback |
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92 | * |
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93 | * @dev: drm dev pointer |
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94 | * |
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95 | * Handles stuff to be done after enabling irqs (all asics). |
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96 | * Returns 0 on success. |
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97 | */ |
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3120 | serge | 98 | int radeon_driver_irq_postinstall_kms(struct drm_device *dev) |
99 | { |
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100 | dev->max_vblank_count = 0x001fffff; |
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101 | return 0; |
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102 | } |
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2997 | Serge | 103 | |
3120 | serge | 104 | /** |
105 | * radeon_driver_irq_uninstall_kms - drm irq uninstall callback |
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106 | * |
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107 | * @dev: drm dev pointer |
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108 | * |
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109 | * This function disables all interrupt sources on the GPU (all asics). |
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110 | */ |
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111 | void radeon_driver_irq_uninstall_kms(struct drm_device *dev) |
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2004 | serge | 112 | { |
3120 | serge | 113 | struct radeon_device *rdev = dev->dev_private; |
114 | unsigned long irqflags; |
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115 | unsigned i; |
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2004 | serge | 116 | |
3120 | serge | 117 | if (rdev == NULL) { |
118 | return; |
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119 | } |
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120 | spin_lock_irqsave(&rdev->irq.lock, irqflags); |
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121 | /* Disable *all* interrupts */ |
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122 | for (i = 0; i < RADEON_NUM_RINGS; i++) |
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123 | atomic_set(&rdev->irq.ring_int[i], 0); |
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5078 | serge | 124 | rdev->irq.dpm_thermal = false; |
3120 | serge | 125 | for (i = 0; i < RADEON_MAX_HPD_PINS; i++) |
126 | rdev->irq.hpd[i] = false; |
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127 | for (i = 0; i < RADEON_MAX_CRTCS; i++) { |
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128 | rdev->irq.crtc_vblank_int[i] = false; |
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129 | atomic_set(&rdev->irq.pflip[i], 0); |
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130 | rdev->irq.afmt[i] = false; |
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131 | } |
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3764 | Serge | 132 | radeon_irq_set(rdev); |
3120 | serge | 133 | spin_unlock_irqrestore(&rdev->irq.lock, irqflags); |
2004 | serge | 134 | } |
135 | |||
3120 | serge | 136 | |
137 | |||
2997 | Serge | 138 | /** |
139 | * radeon_irq_kms_init - init driver interrupt info |
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140 | * |
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141 | * @rdev: radeon device pointer |
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142 | * |
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143 | * Sets up the work irq handlers, vblank init, MSIs, etc. (all asics). |
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144 | * Returns 0 for success, error for failure. |
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145 | */ |
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2004 | serge | 146 | int radeon_irq_kms_init(struct radeon_device *rdev) |
147 | { |
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148 | int r = 0; |
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149 | |||
2997 | Serge | 150 | spin_lock_init(&rdev->irq.lock); |
151 | /* enable msi */ |
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152 | rdev->msi_enabled = 0; |
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2004 | serge | 153 | |
154 | rdev->irq.installed = true; |
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5078 | serge | 155 | r = drm_irq_install(rdev->ddev, rdev->ddev->pdev->irq); |
2004 | serge | 156 | if (r) { |
157 | rdev->irq.installed = false; |
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3120 | serge | 158 | FAIL(); |
2004 | serge | 159 | return r; |
160 | } |
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5078 | serge | 161 | |
2004 | serge | 162 | DRM_INFO("radeon: irq initialized.\n"); |
163 | return 0; |
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164 | } |
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165 | |||
2997 | Serge | 166 | /** |
3764 | Serge | 167 | * radeon_irq_kms_fini - tear down driver interrupt info |
2997 | Serge | 168 | * |
169 | * @rdev: radeon device pointer |
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170 | * |
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171 | * Tears down the work irq handlers, vblank handlers, MSIs, etc. (all asics). |
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172 | */ |
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173 | void radeon_irq_kms_fini(struct radeon_device *rdev) |
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174 | { |
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175 | // drm_vblank_cleanup(rdev->ddev); |
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176 | if (rdev->irq.installed) { |
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177 | // drm_irq_uninstall(rdev->ddev); |
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178 | rdev->irq.installed = false; |
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179 | // if (rdev->msi_enabled) |
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180 | // pci_disable_msi(rdev->pdev); |
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181 | } |
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182 | } |
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2004 | serge | 183 | |
2997 | Serge | 184 | /** |
185 | * radeon_irq_kms_sw_irq_get - enable software interrupt |
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186 | * |
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187 | * @rdev: radeon device pointer |
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188 | * @ring: ring whose interrupt you want to enable |
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189 | * |
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190 | * Enables the software interrupt for a specific ring (all asics). |
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191 | * The software interrupt is generally used to signal a fence on |
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192 | * a particular ring. |
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193 | */ |
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194 | void radeon_irq_kms_sw_irq_get(struct radeon_device *rdev, int ring) |
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2004 | serge | 195 | { |
196 | unsigned long irqflags; |
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197 | |||
2997 | Serge | 198 | if (!rdev->ddev->irq_enabled) |
199 | return; |
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200 | |||
201 | if (atomic_inc_return(&rdev->irq.ring_int[ring]) == 1) { |
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202 | spin_lock_irqsave(&rdev->irq.lock, irqflags); |
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2004 | serge | 203 | radeon_irq_set(rdev); |
2997 | Serge | 204 | spin_unlock_irqrestore(&rdev->irq.lock, irqflags); |
2004 | serge | 205 | } |
206 | } |
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207 | |||
2997 | Serge | 208 | /** |
5271 | serge | 209 | * radeon_irq_kms_sw_irq_get_delayed - enable software interrupt |
210 | * |
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211 | * @rdev: radeon device pointer |
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212 | * @ring: ring whose interrupt you want to enable |
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213 | * |
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214 | * Enables the software interrupt for a specific ring (all asics). |
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215 | * The software interrupt is generally used to signal a fence on |
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216 | * a particular ring. |
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217 | */ |
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218 | bool radeon_irq_kms_sw_irq_get_delayed(struct radeon_device *rdev, int ring) |
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219 | { |
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220 | return atomic_inc_return(&rdev->irq.ring_int[ring]) == 1; |
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221 | } |
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222 | |||
223 | /** |
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2997 | Serge | 224 | * radeon_irq_kms_sw_irq_put - disable software interrupt |
225 | * |
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226 | * @rdev: radeon device pointer |
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227 | * @ring: ring whose interrupt you want to disable |
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228 | * |
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229 | * Disables the software interrupt for a specific ring (all asics). |
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230 | * The software interrupt is generally used to signal a fence on |
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231 | * a particular ring. |
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232 | */ |
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233 | void radeon_irq_kms_sw_irq_put(struct radeon_device *rdev, int ring) |
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2004 | serge | 234 | { |
235 | unsigned long irqflags; |
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236 | |||
2997 | Serge | 237 | if (!rdev->ddev->irq_enabled) |
238 | return; |
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239 | |||
240 | if (atomic_dec_and_test(&rdev->irq.ring_int[ring])) { |
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241 | spin_lock_irqsave(&rdev->irq.lock, irqflags); |
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2004 | serge | 242 | radeon_irq_set(rdev); |
2997 | Serge | 243 | spin_unlock_irqrestore(&rdev->irq.lock, irqflags); |
2004 | serge | 244 | } |
245 | } |
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246 | |||
3120 | serge | 247 | /** |
248 | * radeon_irq_kms_enable_hpd - enable hotplug detect interrupt |
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249 | * |
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250 | * @rdev: radeon device pointer |
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251 | * @hpd_mask: mask of hpd pins you want to enable. |
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252 | * |
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253 | * Enables the hotplug detect interrupt for a specific hpd pin (all asics). |
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254 | */ |
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255 | void radeon_irq_kms_enable_hpd(struct radeon_device *rdev, unsigned hpd_mask) |
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256 | { |
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257 | unsigned long irqflags; |
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258 | int i; |
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2004 | serge | 259 | |
5078 | serge | 260 | if (!rdev->ddev->irq_enabled) |
261 | return; |
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262 | |||
3120 | serge | 263 | spin_lock_irqsave(&rdev->irq.lock, irqflags); |
264 | for (i = 0; i < RADEON_MAX_HPD_PINS; ++i) |
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265 | rdev->irq.hpd[i] |= !!(hpd_mask & (1 << i)); |
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266 | radeon_irq_set(rdev); |
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267 | spin_unlock_irqrestore(&rdev->irq.lock, irqflags); |
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268 | } |
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269 | |||
270 | /** |
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271 | * radeon_irq_kms_disable_hpd - disable hotplug detect interrupt |
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272 | * |
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273 | * @rdev: radeon device pointer |
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274 | * @hpd_mask: mask of hpd pins you want to disable. |
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275 | * |
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276 | * Disables the hotplug detect interrupt for a specific hpd pin (all asics). |
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277 | */ |
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278 | void radeon_irq_kms_disable_hpd(struct radeon_device *rdev, unsigned hpd_mask) |
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279 | { |
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280 | unsigned long irqflags; |
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281 | int i; |
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282 | |||
5078 | serge | 283 | if (!rdev->ddev->irq_enabled) |
284 | return; |
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285 | |||
3120 | serge | 286 | spin_lock_irqsave(&rdev->irq.lock, irqflags); |
287 | for (i = 0; i < RADEON_MAX_HPD_PINS; ++i) |
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288 | rdev->irq.hpd[i] &= !(hpd_mask & (1 << i)); |
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289 | radeon_irq_set(rdev); |
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290 | spin_unlock_irqrestore(&rdev->irq.lock, irqflags); |
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291 | }><>>><>>>>>>>> |
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292 |