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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 | |||
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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44 | * @DRM_IRQ_ARGS: args |
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45 | * |
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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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3120 | serge | 50 | irqreturn_t radeon_driver_irq_handler_kms(DRM_IRQ_ARGS) |
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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76 | for (i = 0; i < RADEON_MAX_HPD_PINS; i++) |
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77 | rdev->irq.hpd[i] = false; |
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78 | for (i = 0; i < RADEON_MAX_CRTCS; i++) { |
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2004 | serge | 79 | rdev->irq.crtc_vblank_int[i] = false; |
2997 | Serge | 80 | atomic_set(&rdev->irq.pflip[i], 0); |
81 | rdev->irq.afmt[i] = false; |
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2004 | serge | 82 | } |
83 | radeon_irq_set(rdev); |
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2997 | Serge | 84 | spin_unlock_irqrestore(&rdev->irq.lock, irqflags); |
2004 | serge | 85 | /* Clear bits */ |
86 | radeon_irq_process(rdev); |
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87 | } |
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88 | |||
2997 | Serge | 89 | /** |
90 | * radeon_driver_irq_postinstall_kms - drm irq preinstall callback |
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91 | * |
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92 | * @dev: drm dev pointer |
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93 | * |
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94 | * Handles stuff to be done after enabling irqs (all asics). |
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95 | * Returns 0 on success. |
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96 | */ |
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3120 | serge | 97 | int radeon_driver_irq_postinstall_kms(struct drm_device *dev) |
98 | { |
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99 | dev->max_vblank_count = 0x001fffff; |
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100 | return 0; |
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101 | } |
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2997 | Serge | 102 | |
3120 | serge | 103 | /** |
104 | * radeon_driver_irq_uninstall_kms - drm irq uninstall callback |
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105 | * |
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106 | * @dev: drm dev pointer |
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107 | * |
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108 | * This function disables all interrupt sources on the GPU (all asics). |
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109 | */ |
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110 | void radeon_driver_irq_uninstall_kms(struct drm_device *dev) |
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2004 | serge | 111 | { |
3120 | serge | 112 | struct radeon_device *rdev = dev->dev_private; |
113 | unsigned long irqflags; |
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114 | unsigned i; |
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2004 | serge | 115 | |
3120 | serge | 116 | if (rdev == NULL) { |
117 | return; |
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118 | } |
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119 | spin_lock_irqsave(&rdev->irq.lock, irqflags); |
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120 | /* Disable *all* interrupts */ |
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121 | for (i = 0; i < RADEON_NUM_RINGS; i++) |
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122 | atomic_set(&rdev->irq.ring_int[i], 0); |
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123 | for (i = 0; i < RADEON_MAX_HPD_PINS; i++) |
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124 | rdev->irq.hpd[i] = false; |
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125 | for (i = 0; i < RADEON_MAX_CRTCS; i++) { |
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126 | rdev->irq.crtc_vblank_int[i] = false; |
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127 | atomic_set(&rdev->irq.pflip[i], 0); |
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128 | rdev->irq.afmt[i] = false; |
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129 | } |
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3764 | Serge | 130 | radeon_irq_set(rdev); |
3120 | serge | 131 | spin_unlock_irqrestore(&rdev->irq.lock, irqflags); |
2004 | serge | 132 | } |
133 | |||
3120 | serge | 134 | |
135 | |||
2997 | Serge | 136 | /** |
137 | * radeon_irq_kms_init - init driver interrupt info |
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138 | * |
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139 | * @rdev: radeon device pointer |
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140 | * |
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141 | * Sets up the work irq handlers, vblank init, MSIs, etc. (all asics). |
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142 | * Returns 0 for success, error for failure. |
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143 | */ |
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2004 | serge | 144 | int radeon_irq_kms_init(struct radeon_device *rdev) |
145 | { |
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146 | int irq_line; |
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147 | int r = 0; |
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148 | |||
149 | ENTER(); |
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150 | |||
151 | |||
2997 | Serge | 152 | spin_lock_init(&rdev->irq.lock); |
153 | /* enable msi */ |
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154 | rdev->msi_enabled = 0; |
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2004 | serge | 155 | |
156 | rdev->irq.installed = true; |
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3120 | serge | 157 | r = drm_irq_install(rdev->ddev); |
2004 | serge | 158 | if (r) { |
159 | rdev->irq.installed = false; |
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3120 | serge | 160 | FAIL(); |
2004 | serge | 161 | return r; |
162 | } |
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163 | DRM_INFO("radeon: irq initialized.\n"); |
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164 | return 0; |
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165 | } |
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166 | |||
2997 | Serge | 167 | /** |
3764 | Serge | 168 | * radeon_irq_kms_fini - tear down driver interrupt info |
2997 | Serge | 169 | * |
170 | * @rdev: radeon device pointer |
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171 | * |
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172 | * Tears down the work irq handlers, vblank handlers, MSIs, etc. (all asics). |
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173 | */ |
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174 | void radeon_irq_kms_fini(struct radeon_device *rdev) |
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175 | { |
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176 | // drm_vblank_cleanup(rdev->ddev); |
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177 | if (rdev->irq.installed) { |
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178 | // drm_irq_uninstall(rdev->ddev); |
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179 | rdev->irq.installed = false; |
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180 | // if (rdev->msi_enabled) |
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181 | // pci_disable_msi(rdev->pdev); |
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182 | } |
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183 | // flush_work(&rdev->hotplug_work); |
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184 | } |
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2004 | serge | 185 | |
2997 | Serge | 186 | /** |
187 | * radeon_irq_kms_sw_irq_get - enable software interrupt |
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188 | * |
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189 | * @rdev: radeon device pointer |
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190 | * @ring: ring whose interrupt you want to enable |
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191 | * |
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192 | * Enables the software interrupt for a specific ring (all asics). |
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193 | * The software interrupt is generally used to signal a fence on |
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194 | * a particular ring. |
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195 | */ |
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196 | void radeon_irq_kms_sw_irq_get(struct radeon_device *rdev, int ring) |
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2004 | serge | 197 | { |
198 | unsigned long irqflags; |
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199 | |||
2997 | Serge | 200 | if (!rdev->ddev->irq_enabled) |
201 | return; |
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202 | |||
203 | if (atomic_inc_return(&rdev->irq.ring_int[ring]) == 1) { |
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204 | spin_lock_irqsave(&rdev->irq.lock, irqflags); |
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2004 | serge | 205 | radeon_irq_set(rdev); |
2997 | Serge | 206 | spin_unlock_irqrestore(&rdev->irq.lock, irqflags); |
2004 | serge | 207 | } |
208 | } |
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209 | |||
2997 | Serge | 210 | /** |
211 | * radeon_irq_kms_sw_irq_put - disable software interrupt |
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212 | * |
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213 | * @rdev: radeon device pointer |
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214 | * @ring: ring whose interrupt you want to disable |
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215 | * |
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216 | * Disables the software interrupt for a specific ring (all asics). |
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217 | * The software interrupt is generally used to signal a fence on |
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218 | * a particular ring. |
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219 | */ |
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220 | void radeon_irq_kms_sw_irq_put(struct radeon_device *rdev, int ring) |
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2004 | serge | 221 | { |
222 | unsigned long irqflags; |
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223 | |||
2997 | Serge | 224 | if (!rdev->ddev->irq_enabled) |
225 | return; |
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226 | |||
227 | if (atomic_dec_and_test(&rdev->irq.ring_int[ring])) { |
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228 | spin_lock_irqsave(&rdev->irq.lock, irqflags); |
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2004 | serge | 229 | radeon_irq_set(rdev); |
2997 | Serge | 230 | spin_unlock_irqrestore(&rdev->irq.lock, irqflags); |
2004 | serge | 231 | } |
232 | } |
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233 | |||
3120 | serge | 234 | /** |
235 | * radeon_irq_kms_enable_hpd - enable hotplug detect interrupt |
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236 | * |
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237 | * @rdev: radeon device pointer |
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238 | * @hpd_mask: mask of hpd pins you want to enable. |
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239 | * |
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240 | * Enables the hotplug detect interrupt for a specific hpd pin (all asics). |
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241 | */ |
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242 | void radeon_irq_kms_enable_hpd(struct radeon_device *rdev, unsigned hpd_mask) |
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243 | { |
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244 | unsigned long irqflags; |
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245 | int i; |
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2004 | serge | 246 | |
3120 | serge | 247 | spin_lock_irqsave(&rdev->irq.lock, irqflags); |
248 | for (i = 0; i < RADEON_MAX_HPD_PINS; ++i) |
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249 | rdev->irq.hpd[i] |= !!(hpd_mask & (1 << i)); |
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250 | radeon_irq_set(rdev); |
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251 | spin_unlock_irqrestore(&rdev->irq.lock, irqflags); |
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252 | } |
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253 | |||
254 | /** |
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255 | * radeon_irq_kms_disable_hpd - disable hotplug detect interrupt |
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256 | * |
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257 | * @rdev: radeon device pointer |
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258 | * @hpd_mask: mask of hpd pins you want to disable. |
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259 | * |
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260 | * Disables the hotplug detect interrupt for a specific hpd pin (all asics). |
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261 | */ |
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262 | void radeon_irq_kms_disable_hpd(struct radeon_device *rdev, unsigned hpd_mask) |
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263 | { |
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264 | unsigned long irqflags; |
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265 | int i; |
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266 | |||
267 | spin_lock_irqsave(&rdev->irq.lock, irqflags); |
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268 | for (i = 0; i < RADEON_MAX_HPD_PINS; ++i) |
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269 | rdev->irq.hpd[i] &= !(hpd_mask & (1 << i)); |
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270 | radeon_irq_set(rdev); |
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271 | spin_unlock_irqrestore(&rdev->irq.lock, irqflags); |
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272 | } |
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273 | |||
274 | |||
275 | static struct drm_driver drm_driver = { |
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276 | .irq_preinstall = radeon_driver_irq_preinstall_kms, |
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277 | .irq_postinstall = radeon_driver_irq_postinstall_kms, |
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278 | .irq_handler = radeon_driver_irq_handler_kms |
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279 | }; |
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280 | |||
281 | static struct drm_driver *driver = &drm_driver; |
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282 | |||
283 | int drm_irq_install(struct drm_device *dev) |
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284 | { |
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285 | unsigned long sh_flags = 0; |
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286 | int irq_line; |
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287 | int ret = 0; |
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288 | |||
289 | char *irqname; |
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290 | |||
291 | mutex_lock(&dev->struct_mutex); |
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292 | |||
293 | /* Driver must have been initialized */ |
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294 | if (!dev->dev_private) { |
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295 | mutex_unlock(&dev->struct_mutex); |
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296 | return -EINVAL; |
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297 | } |
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298 | |||
299 | if (dev->irq_enabled) { |
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300 | mutex_unlock(&dev->struct_mutex); |
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301 | return -EBUSY; |
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302 | } |
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303 | dev->irq_enabled = 1; |
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304 | mutex_unlock(&dev->struct_mutex); |
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305 | |||
306 | irq_line = drm_dev_to_irq(dev); |
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307 | |||
308 | DRM_DEBUG("irq=%d\n", drm_dev_to_irq(dev)); |
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309 | |||
310 | /* Before installing handler */ |
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311 | if (driver->irq_preinstall) |
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312 | driver->irq_preinstall(dev); |
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313 | |||
314 | ret = AttachIntHandler(irq_line, driver->irq_handler, (u32)dev); |
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315 | |||
316 | /* After installing handler */ |
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317 | if (driver->irq_postinstall) |
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318 | ret = driver->irq_postinstall(dev); |
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319 | |||
320 | if (ret < 0) { |
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321 | DRM_ERROR(__FUNCTION__); |
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322 | } |
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323 | |||
324 | u16_t cmd = PciRead16(dev->pdev->busnr, dev->pdev->devfn, 4); |
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325 | cmd&= ~(1<<10); |
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326 | PciWrite16(dev->pdev->busnr, dev->pdev->devfn, 4, cmd); |
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327 | |||
328 | return ret; |
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329 | }10); |