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1 | /* |
2 | * Copyright(c) 2011-2016 Intel Corporation. All rights reserved. | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
21 | * SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Ke Yu | |
25 | * Zhiyuan Lv <zhiyuan.lv@intel.com> | |
26 | * | |
27 | * Contributors: | |
28 | * Terrence Xu <terrence.xu@intel.com> | |
29 | * Changbin Du <changbin.du@intel.com> | |
30 | * Bing Niu <bing.niu@intel.com> | |
31 | * Zhi Wang <zhi.a.wang@intel.com> | |
32 | * | |
33 | */ | |
34 | ||
35 | #include "i915_drv.h" | |
feddf6e8 | 36 | #include "gvt.h" |
04d348ae ZW |
37 | |
38 | static int get_edp_pipe(struct intel_vgpu *vgpu) | |
39 | { | |
40 | u32 data = vgpu_vreg(vgpu, _TRANS_DDI_FUNC_CTL_EDP); | |
41 | int pipe = -1; | |
42 | ||
43 | switch (data & TRANS_DDI_EDP_INPUT_MASK) { | |
44 | case TRANS_DDI_EDP_INPUT_A_ON: | |
45 | case TRANS_DDI_EDP_INPUT_A_ONOFF: | |
46 | pipe = PIPE_A; | |
47 | break; | |
48 | case TRANS_DDI_EDP_INPUT_B_ONOFF: | |
49 | pipe = PIPE_B; | |
50 | break; | |
51 | case TRANS_DDI_EDP_INPUT_C_ONOFF: | |
52 | pipe = PIPE_C; | |
53 | break; | |
54 | } | |
55 | return pipe; | |
56 | } | |
57 | ||
58 | static int edp_pipe_is_enabled(struct intel_vgpu *vgpu) | |
59 | { | |
60 | struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv; | |
61 | ||
62 | if (!(vgpu_vreg(vgpu, PIPECONF(_PIPE_EDP)) & PIPECONF_ENABLE)) | |
63 | return 0; | |
64 | ||
65 | if (!(vgpu_vreg(vgpu, _TRANS_DDI_FUNC_CTL_EDP) & TRANS_DDI_FUNC_ENABLE)) | |
66 | return 0; | |
67 | return 1; | |
68 | } | |
69 | ||
70 | static int pipe_is_enabled(struct intel_vgpu *vgpu, int pipe) | |
71 | { | |
72 | struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv; | |
73 | ||
74 | if (WARN_ON(pipe < PIPE_A || pipe >= I915_MAX_PIPES)) | |
75 | return -EINVAL; | |
76 | ||
77 | if (vgpu_vreg(vgpu, PIPECONF(pipe)) & PIPECONF_ENABLE) | |
78 | return 1; | |
79 | ||
80 | if (edp_pipe_is_enabled(vgpu) && | |
81 | get_edp_pipe(vgpu) == pipe) | |
82 | return 1; | |
83 | return 0; | |
84 | } | |
85 | ||
86 | /* EDID with 1024x768 as its resolution */ | |
87 | static unsigned char virtual_dp_monitor_edid[] = { | |
88 | /*Header*/ | |
89 | 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, | |
90 | /* Vendor & Product Identification */ | |
91 | 0x22, 0xf0, 0x54, 0x29, 0x00, 0x00, 0x00, 0x00, 0x04, 0x17, | |
92 | /* Version & Revision */ | |
93 | 0x01, 0x04, | |
94 | /* Basic Display Parameters & Features */ | |
95 | 0xa5, 0x34, 0x20, 0x78, 0x23, | |
96 | /* Color Characteristics */ | |
97 | 0xfc, 0x81, 0xa4, 0x55, 0x4d, 0x9d, 0x25, 0x12, 0x50, 0x54, | |
98 | /* Established Timings: maximum resolution is 1024x768 */ | |
99 | 0x21, 0x08, 0x00, | |
100 | /* Standard Timings. All invalid */ | |
101 | 0x00, 0xc0, 0x00, 0xc0, 0x00, 0x40, 0x00, 0x80, 0x00, 0x00, | |
102 | 0x00, 0x40, 0x00, 0x00, 0x00, 0x01, | |
103 | /* 18 Byte Data Blocks 1: invalid */ | |
104 | 0x00, 0x00, 0x80, 0xa0, 0x70, 0xb0, | |
105 | 0x23, 0x40, 0x30, 0x20, 0x36, 0x00, 0x06, 0x44, 0x21, 0x00, 0x00, 0x1a, | |
106 | /* 18 Byte Data Blocks 2: invalid */ | |
107 | 0x00, 0x00, 0x00, 0xfd, 0x00, 0x18, 0x3c, 0x18, 0x50, 0x11, 0x00, 0x0a, | |
108 | 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, | |
109 | /* 18 Byte Data Blocks 3: invalid */ | |
110 | 0x00, 0x00, 0x00, 0xfc, 0x00, 0x48, | |
111 | 0x50, 0x20, 0x5a, 0x52, 0x32, 0x34, 0x34, 0x30, 0x77, 0x0a, 0x20, 0x20, | |
112 | /* 18 Byte Data Blocks 4: invalid */ | |
113 | 0x00, 0x00, 0x00, 0xff, 0x00, 0x43, 0x4e, 0x34, 0x33, 0x30, 0x34, 0x30, | |
114 | 0x44, 0x58, 0x51, 0x0a, 0x20, 0x20, | |
115 | /* Extension Block Count */ | |
116 | 0x00, | |
117 | /* Checksum */ | |
118 | 0xef, | |
119 | }; | |
120 | ||
121 | #define DPCD_HEADER_SIZE 0xb | |
122 | ||
123 | u8 dpcd_fix_data[DPCD_HEADER_SIZE] = { | |
124 | 0x11, 0x0a, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
125 | }; | |
126 | ||
127 | static void emulate_monitor_status_change(struct intel_vgpu *vgpu) | |
128 | { | |
129 | struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv; | |
130 | vgpu_vreg(vgpu, SDEISR) &= ~(SDE_PORTB_HOTPLUG_CPT | | |
131 | SDE_PORTC_HOTPLUG_CPT | | |
132 | SDE_PORTD_HOTPLUG_CPT); | |
133 | ||
134 | if (IS_SKYLAKE(dev_priv)) | |
135 | vgpu_vreg(vgpu, SDEISR) &= ~(SDE_PORTA_HOTPLUG_SPT | | |
136 | SDE_PORTE_HOTPLUG_SPT); | |
137 | ||
138 | if (intel_vgpu_has_monitor_on_port(vgpu, PORT_B)) | |
139 | vgpu_vreg(vgpu, SDEISR) |= SDE_PORTB_HOTPLUG_CPT; | |
140 | ||
141 | if (intel_vgpu_has_monitor_on_port(vgpu, PORT_C)) | |
142 | vgpu_vreg(vgpu, SDEISR) |= SDE_PORTC_HOTPLUG_CPT; | |
143 | ||
144 | if (intel_vgpu_has_monitor_on_port(vgpu, PORT_D)) | |
145 | vgpu_vreg(vgpu, SDEISR) |= SDE_PORTD_HOTPLUG_CPT; | |
146 | ||
147 | if (IS_SKYLAKE(dev_priv) && | |
148 | intel_vgpu_has_monitor_on_port(vgpu, PORT_E)) { | |
149 | vgpu_vreg(vgpu, SDEISR) |= SDE_PORTE_HOTPLUG_SPT; | |
150 | } | |
151 | ||
152 | if (intel_vgpu_has_monitor_on_port(vgpu, PORT_A)) { | |
153 | if (IS_BROADWELL(dev_priv)) | |
154 | vgpu_vreg(vgpu, GEN8_DE_PORT_ISR) |= | |
155 | GEN8_PORT_DP_A_HOTPLUG; | |
156 | else | |
157 | vgpu_vreg(vgpu, SDEISR) |= SDE_PORTA_HOTPLUG_SPT; | |
158 | } | |
159 | } | |
160 | ||
161 | static void clean_virtual_dp_monitor(struct intel_vgpu *vgpu, int port_num) | |
162 | { | |
163 | struct intel_vgpu_port *port = intel_vgpu_port(vgpu, port_num); | |
164 | ||
165 | kfree(port->edid); | |
166 | port->edid = NULL; | |
167 | ||
168 | kfree(port->dpcd); | |
169 | port->dpcd = NULL; | |
170 | } | |
171 | ||
172 | static int setup_virtual_dp_monitor(struct intel_vgpu *vgpu, int port_num, | |
173 | int type) | |
174 | { | |
175 | struct intel_vgpu_port *port = intel_vgpu_port(vgpu, port_num); | |
176 | ||
177 | port->edid = kzalloc(sizeof(*(port->edid)), GFP_KERNEL); | |
178 | if (!port->edid) | |
179 | return -ENOMEM; | |
180 | ||
181 | port->dpcd = kzalloc(sizeof(*(port->dpcd)), GFP_KERNEL); | |
182 | if (!port->dpcd) { | |
183 | kfree(port->edid); | |
184 | return -ENOMEM; | |
185 | } | |
186 | ||
187 | memcpy(port->edid->edid_block, virtual_dp_monitor_edid, | |
188 | EDID_SIZE); | |
189 | port->edid->data_valid = true; | |
190 | ||
191 | memcpy(port->dpcd->data, dpcd_fix_data, DPCD_HEADER_SIZE); | |
192 | port->dpcd->data_valid = true; | |
193 | port->dpcd->data[DPCD_SINK_COUNT] = 0x1; | |
194 | port->type = type; | |
195 | ||
196 | emulate_monitor_status_change(vgpu); | |
197 | return 0; | |
198 | } | |
199 | ||
200 | /** | |
201 | * intel_gvt_check_vblank_emulation - check if vblank emulation timer should | |
202 | * be turned on/off when a virtual pipe is enabled/disabled. | |
203 | * @gvt: a GVT device | |
204 | * | |
205 | * This function is used to turn on/off vblank timer according to currently | |
206 | * enabled/disabled virtual pipes. | |
207 | * | |
208 | */ | |
209 | void intel_gvt_check_vblank_emulation(struct intel_gvt *gvt) | |
210 | { | |
211 | struct intel_gvt_irq *irq = &gvt->irq; | |
212 | struct intel_vgpu *vgpu; | |
213 | bool have_enabled_pipe = false; | |
214 | int pipe, id; | |
215 | ||
216 | if (WARN_ON(!mutex_is_locked(&gvt->lock))) | |
217 | return; | |
218 | ||
219 | hrtimer_cancel(&irq->vblank_timer.timer); | |
220 | ||
221 | for_each_active_vgpu(gvt, vgpu, id) { | |
222 | for (pipe = 0; pipe < I915_MAX_PIPES; pipe++) { | |
223 | have_enabled_pipe = | |
224 | pipe_is_enabled(vgpu, pipe); | |
225 | if (have_enabled_pipe) | |
226 | break; | |
227 | } | |
228 | } | |
229 | ||
230 | if (have_enabled_pipe) | |
231 | hrtimer_start(&irq->vblank_timer.timer, | |
232 | ktime_add_ns(ktime_get(), irq->vblank_timer.period), | |
233 | HRTIMER_MODE_ABS); | |
234 | } | |
235 | ||
236 | static void emulate_vblank_on_pipe(struct intel_vgpu *vgpu, int pipe) | |
237 | { | |
238 | struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv; | |
239 | struct intel_vgpu_irq *irq = &vgpu->irq; | |
240 | int vblank_event[] = { | |
241 | [PIPE_A] = PIPE_A_VBLANK, | |
242 | [PIPE_B] = PIPE_B_VBLANK, | |
243 | [PIPE_C] = PIPE_C_VBLANK, | |
244 | }; | |
245 | int event; | |
246 | ||
247 | if (pipe < PIPE_A || pipe > PIPE_C) | |
248 | return; | |
249 | ||
250 | for_each_set_bit(event, irq->flip_done_event[pipe], | |
251 | INTEL_GVT_EVENT_MAX) { | |
252 | clear_bit(event, irq->flip_done_event[pipe]); | |
253 | if (!pipe_is_enabled(vgpu, pipe)) | |
254 | continue; | |
255 | ||
256 | vgpu_vreg(vgpu, PIPE_FLIPCOUNT_G4X(pipe))++; | |
257 | intel_vgpu_trigger_virtual_event(vgpu, event); | |
258 | } | |
259 | ||
260 | if (pipe_is_enabled(vgpu, pipe)) { | |
261 | vgpu_vreg(vgpu, PIPE_FRMCOUNT_G4X(pipe))++; | |
262 | intel_vgpu_trigger_virtual_event(vgpu, vblank_event[pipe]); | |
263 | } | |
264 | } | |
265 | ||
266 | static void emulate_vblank(struct intel_vgpu *vgpu) | |
267 | { | |
268 | int pipe; | |
269 | ||
270 | for_each_pipe(vgpu->gvt->dev_priv, pipe) | |
271 | emulate_vblank_on_pipe(vgpu, pipe); | |
272 | } | |
273 | ||
274 | /** | |
275 | * intel_gvt_emulate_vblank - trigger vblank events for vGPUs on GVT device | |
276 | * @gvt: a GVT device | |
277 | * | |
278 | * This function is used to trigger vblank interrupts for vGPUs on GVT device | |
279 | * | |
280 | */ | |
281 | void intel_gvt_emulate_vblank(struct intel_gvt *gvt) | |
282 | { | |
283 | struct intel_vgpu *vgpu; | |
284 | int id; | |
285 | ||
286 | if (WARN_ON(!mutex_is_locked(&gvt->lock))) | |
287 | return; | |
288 | ||
289 | for_each_active_vgpu(gvt, vgpu, id) | |
290 | emulate_vblank(vgpu); | |
291 | } | |
292 | ||
293 | /** | |
294 | * intel_vgpu_clean_display - clean vGPU virtual display emulation | |
295 | * @vgpu: a vGPU | |
296 | * | |
297 | * This function is used to clean vGPU virtual display emulation stuffs | |
298 | * | |
299 | */ | |
300 | void intel_vgpu_clean_display(struct intel_vgpu *vgpu) | |
301 | { | |
302 | struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv; | |
303 | ||
304 | if (IS_SKYLAKE(dev_priv)) | |
305 | clean_virtual_dp_monitor(vgpu, PORT_D); | |
306 | else | |
307 | clean_virtual_dp_monitor(vgpu, PORT_B); | |
308 | } | |
309 | ||
310 | /** | |
311 | * intel_vgpu_init_display- initialize vGPU virtual display emulation | |
312 | * @vgpu: a vGPU | |
313 | * | |
314 | * This function is used to initialize vGPU virtual display emulation stuffs | |
315 | * | |
316 | * Returns: | |
317 | * Zero on success, negative error code if failed. | |
318 | * | |
319 | */ | |
320 | int intel_vgpu_init_display(struct intel_vgpu *vgpu) | |
321 | { | |
322 | struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv; | |
323 | ||
324 | intel_vgpu_init_i2c_edid(vgpu); | |
325 | ||
326 | if (IS_SKYLAKE(dev_priv)) | |
327 | return setup_virtual_dp_monitor(vgpu, PORT_D, GVT_DP_D); | |
328 | else | |
329 | return setup_virtual_dp_monitor(vgpu, PORT_B, GVT_DP_B); | |
330 | } |