Commit | Line | Data |
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6ee73861 BS |
1 | #include <linux/pci.h> |
2 | #include <linux/acpi.h> | |
5a0e3ad6 | 3 | #include <linux/slab.h> |
6ee73861 BS |
4 | #include <acpi/acpi_drivers.h> |
5 | #include <acpi/acpi_bus.h> | |
a6ed76d7 | 6 | #include <acpi/video.h> |
8116188f DA |
7 | #include <acpi/acpi.h> |
8 | #include <linux/mxm-wmi.h> | |
6ee73861 | 9 | |
760285e7 DH |
10 | #include <drm/drmP.h> |
11 | #include <drm/drm_crtc_helper.h> | |
6ee73861 | 12 | #include "nouveau_drv.h" |
760285e7 | 13 | #include <drm/nouveau_drm.h> |
6ee73861 | 14 | #include "nv50_display.h" |
a6ed76d7 | 15 | #include "nouveau_connector.h" |
6ee73861 | 16 | |
6a9ee8af DA |
17 | #include <linux/vga_switcheroo.h> |
18 | ||
6ee73861 BS |
19 | #define NOUVEAU_DSM_LED 0x02 |
20 | #define NOUVEAU_DSM_LED_STATE 0x00 | |
21 | #define NOUVEAU_DSM_LED_OFF 0x10 | |
22 | #define NOUVEAU_DSM_LED_STAMINA 0x11 | |
23 | #define NOUVEAU_DSM_LED_SPEED 0x12 | |
24 | ||
25 | #define NOUVEAU_DSM_POWER 0x03 | |
26 | #define NOUVEAU_DSM_POWER_STATE 0x00 | |
27 | #define NOUVEAU_DSM_POWER_SPEED 0x01 | |
28 | #define NOUVEAU_DSM_POWER_STAMINA 0x02 | |
29 | ||
9075e85f | 30 | #define NOUVEAU_DSM_OPTIMUS_FN 0x1A |
d099230c PL |
31 | #define NOUVEAU_DSM_OPTIMUS_ARGS 0x03000001 |
32 | ||
6a9ee8af DA |
33 | static struct nouveau_dsm_priv { |
34 | bool dsm_detected; | |
f19467c5 | 35 | bool optimus_detected; |
6a9ee8af | 36 | acpi_handle dhandle; |
afeb3e11 | 37 | acpi_handle rom_handle; |
6a9ee8af DA |
38 | } nouveau_dsm_priv; |
39 | ||
f19467c5 DA |
40 | #define NOUVEAU_DSM_HAS_MUX 0x1 |
41 | #define NOUVEAU_DSM_HAS_OPT 0x2 | |
42 | ||
6a9ee8af DA |
43 | static const char nouveau_dsm_muid[] = { |
44 | 0xA0, 0xA0, 0x95, 0x9D, 0x60, 0x00, 0x48, 0x4D, | |
45 | 0xB3, 0x4D, 0x7E, 0x5F, 0xEA, 0x12, 0x9F, 0xD4, | |
46 | }; | |
6ee73861 | 47 | |
f19467c5 DA |
48 | static const char nouveau_op_dsm_muid[] = { |
49 | 0xF8, 0xD8, 0x86, 0xA4, 0xDA, 0x0B, 0x1B, 0x47, | |
50 | 0xA7, 0x2B, 0x60, 0x42, 0xA6, 0xB5, 0xBE, 0xE0, | |
51 | }; | |
52 | ||
53 | static int nouveau_optimus_dsm(acpi_handle handle, int func, int arg, uint32_t *result) | |
54 | { | |
55 | struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; | |
56 | struct acpi_object_list input; | |
57 | union acpi_object params[4]; | |
58 | union acpi_object *obj; | |
d099230c PL |
59 | int i, err; |
60 | char args_buff[4]; | |
f19467c5 DA |
61 | |
62 | input.count = 4; | |
63 | input.pointer = params; | |
64 | params[0].type = ACPI_TYPE_BUFFER; | |
65 | params[0].buffer.length = sizeof(nouveau_op_dsm_muid); | |
66 | params[0].buffer.pointer = (char *)nouveau_op_dsm_muid; | |
67 | params[1].type = ACPI_TYPE_INTEGER; | |
68 | params[1].integer.value = 0x00000100; | |
69 | params[2].type = ACPI_TYPE_INTEGER; | |
70 | params[2].integer.value = func; | |
71 | params[3].type = ACPI_TYPE_BUFFER; | |
d099230c PL |
72 | params[3].buffer.length = 4; |
73 | /* ACPI is little endian, AABBCCDD becomes {DD,CC,BB,AA} */ | |
74 | for (i = 0; i < 4; i++) | |
75 | args_buff[i] = (arg >> i * 8) & 0xFF; | |
76 | params[3].buffer.pointer = args_buff; | |
f19467c5 DA |
77 | |
78 | err = acpi_evaluate_object(handle, "_DSM", &input, &output); | |
79 | if (err) { | |
80 | printk(KERN_INFO "failed to evaluate _DSM: %d\n", err); | |
81 | return err; | |
82 | } | |
83 | ||
84 | obj = (union acpi_object *)output.pointer; | |
85 | ||
86 | if (obj->type == ACPI_TYPE_INTEGER) | |
87 | if (obj->integer.value == 0x80000002) { | |
88 | return -ENODEV; | |
89 | } | |
90 | ||
91 | if (obj->type == ACPI_TYPE_BUFFER) { | |
92 | if (obj->buffer.length == 4 && result) { | |
93 | *result = 0; | |
94 | *result |= obj->buffer.pointer[0]; | |
95 | *result |= (obj->buffer.pointer[1] << 8); | |
96 | *result |= (obj->buffer.pointer[2] << 16); | |
97 | *result |= (obj->buffer.pointer[3] << 24); | |
98 | } | |
99 | } | |
100 | ||
101 | kfree(output.pointer); | |
102 | return 0; | |
103 | } | |
104 | ||
6e86e041 | 105 | static int nouveau_dsm(acpi_handle handle, int func, int arg, uint32_t *result) |
6a9ee8af | 106 | { |
6ee73861 BS |
107 | struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; |
108 | struct acpi_object_list input; | |
109 | union acpi_object params[4]; | |
110 | union acpi_object *obj; | |
111 | int err; | |
112 | ||
6ee73861 BS |
113 | input.count = 4; |
114 | input.pointer = params; | |
115 | params[0].type = ACPI_TYPE_BUFFER; | |
6a9ee8af DA |
116 | params[0].buffer.length = sizeof(nouveau_dsm_muid); |
117 | params[0].buffer.pointer = (char *)nouveau_dsm_muid; | |
6ee73861 BS |
118 | params[1].type = ACPI_TYPE_INTEGER; |
119 | params[1].integer.value = 0x00000102; | |
120 | params[2].type = ACPI_TYPE_INTEGER; | |
121 | params[2].integer.value = func; | |
122 | params[3].type = ACPI_TYPE_INTEGER; | |
123 | params[3].integer.value = arg; | |
124 | ||
125 | err = acpi_evaluate_object(handle, "_DSM", &input, &output); | |
126 | if (err) { | |
6a9ee8af | 127 | printk(KERN_INFO "failed to evaluate _DSM: %d\n", err); |
6ee73861 BS |
128 | return err; |
129 | } | |
130 | ||
131 | obj = (union acpi_object *)output.pointer; | |
132 | ||
133 | if (obj->type == ACPI_TYPE_INTEGER) | |
134 | if (obj->integer.value == 0x80000002) | |
135 | return -ENODEV; | |
136 | ||
137 | if (obj->type == ACPI_TYPE_BUFFER) { | |
138 | if (obj->buffer.length == 4 && result) { | |
139 | *result = 0; | |
140 | *result |= obj->buffer.pointer[0]; | |
141 | *result |= (obj->buffer.pointer[1] << 8); | |
142 | *result |= (obj->buffer.pointer[2] << 16); | |
143 | *result |= (obj->buffer.pointer[3] << 24); | |
144 | } | |
145 | } | |
146 | ||
147 | kfree(output.pointer); | |
148 | return 0; | |
149 | } | |
150 | ||
9075e85f PL |
151 | /* Returns 1 if a DSM function is usable and 0 otherwise */ |
152 | static int nouveau_test_dsm(acpi_handle test_handle, | |
153 | int (*dsm_func)(acpi_handle, int, int, uint32_t *), | |
154 | int sfnc) | |
155 | { | |
156 | u32 result = 0; | |
157 | ||
158 | /* Function 0 returns a Buffer containing available functions. The args | |
159 | * parameter is ignored for function 0, so just put 0 in it */ | |
160 | if (dsm_func(test_handle, 0, 0, &result)) | |
161 | return 0; | |
162 | ||
163 | /* ACPI Spec v4 9.14.1: if bit 0 is zero, no function is supported. If | |
164 | * the n-th bit is enabled, function n is supported */ | |
165 | return result & 1 && result & (1 << sfnc); | |
166 | } | |
167 | ||
6a9ee8af | 168 | static int nouveau_dsm_switch_mux(acpi_handle handle, int mux_id) |
6ee73861 | 169 | { |
000703f4 | 170 | mxm_wmi_call_mxmx(mux_id == NOUVEAU_DSM_LED_STAMINA ? MXM_MXDS_ADAPTER_IGD : MXM_MXDS_ADAPTER_0); |
8116188f | 171 | mxm_wmi_call_mxds(mux_id == NOUVEAU_DSM_LED_STAMINA ? MXM_MXDS_ADAPTER_IGD : MXM_MXDS_ADAPTER_0); |
6a9ee8af DA |
172 | return nouveau_dsm(handle, NOUVEAU_DSM_LED, mux_id, NULL); |
173 | } | |
174 | ||
175 | static int nouveau_dsm_set_discrete_state(acpi_handle handle, enum vga_switcheroo_state state) | |
176 | { | |
177 | int arg; | |
178 | if (state == VGA_SWITCHEROO_ON) | |
179 | arg = NOUVEAU_DSM_POWER_SPEED; | |
180 | else | |
181 | arg = NOUVEAU_DSM_POWER_STAMINA; | |
182 | nouveau_dsm(handle, NOUVEAU_DSM_POWER, arg, NULL); | |
183 | return 0; | |
184 | } | |
185 | ||
186 | static int nouveau_dsm_switchto(enum vga_switcheroo_client_id id) | |
187 | { | |
d099230c PL |
188 | /* perhaps the _DSM functions are mutually exclusive, but prepare for |
189 | * the future */ | |
190 | if (!nouveau_dsm_priv.dsm_detected && nouveau_dsm_priv.optimus_detected) | |
191 | return 0; | |
6a9ee8af | 192 | if (id == VGA_SWITCHEROO_IGD) |
fc5ea29d | 193 | return nouveau_dsm_switch_mux(nouveau_dsm_priv.dhandle, NOUVEAU_DSM_LED_STAMINA); |
6a9ee8af | 194 | else |
fc5ea29d | 195 | return nouveau_dsm_switch_mux(nouveau_dsm_priv.dhandle, NOUVEAU_DSM_LED_SPEED); |
6a9ee8af | 196 | } |
6ee73861 | 197 | |
6a9ee8af DA |
198 | static int nouveau_dsm_power_state(enum vga_switcheroo_client_id id, |
199 | enum vga_switcheroo_state state) | |
200 | { | |
201 | if (id == VGA_SWITCHEROO_IGD) | |
202 | return 0; | |
203 | ||
d099230c PL |
204 | /* Optimus laptops have the card already disabled in |
205 | * nouveau_switcheroo_set_state */ | |
206 | if (!nouveau_dsm_priv.dsm_detected && nouveau_dsm_priv.optimus_detected) | |
207 | return 0; | |
208 | ||
fc5ea29d | 209 | return nouveau_dsm_set_discrete_state(nouveau_dsm_priv.dhandle, state); |
6a9ee8af DA |
210 | } |
211 | ||
6a9ee8af | 212 | static int nouveau_dsm_get_client_id(struct pci_dev *pdev) |
6ee73861 | 213 | { |
d1fbd923 DA |
214 | /* easy option one - intel vendor ID means Integrated */ |
215 | if (pdev->vendor == PCI_VENDOR_ID_INTEL) | |
6a9ee8af | 216 | return VGA_SWITCHEROO_IGD; |
d1fbd923 DA |
217 | |
218 | /* is this device on Bus 0? - this may need improving */ | |
219 | if (pdev->bus->number == 0) | |
220 | return VGA_SWITCHEROO_IGD; | |
221 | ||
222 | return VGA_SWITCHEROO_DIS; | |
6a9ee8af DA |
223 | } |
224 | ||
225 | static struct vga_switcheroo_handler nouveau_dsm_handler = { | |
226 | .switchto = nouveau_dsm_switchto, | |
227 | .power_state = nouveau_dsm_power_state, | |
6a9ee8af DA |
228 | .get_client_id = nouveau_dsm_get_client_id, |
229 | }; | |
6ee73861 | 230 | |
f19467c5 | 231 | static int nouveau_dsm_pci_probe(struct pci_dev *pdev) |
6a9ee8af DA |
232 | { |
233 | acpi_handle dhandle, nvidia_handle; | |
234 | acpi_status status; | |
9075e85f | 235 | int retval = 0; |
6a9ee8af DA |
236 | |
237 | dhandle = DEVICE_ACPI_HANDLE(&pdev->dev); | |
238 | if (!dhandle) | |
239 | return false; | |
afeb3e11 | 240 | |
6a9ee8af DA |
241 | status = acpi_get_handle(dhandle, "_DSM", &nvidia_handle); |
242 | if (ACPI_FAILURE(status)) { | |
6ee73861 | 243 | return false; |
6a9ee8af | 244 | } |
6ee73861 | 245 | |
9075e85f | 246 | if (nouveau_test_dsm(dhandle, nouveau_dsm, NOUVEAU_DSM_POWER)) |
f19467c5 DA |
247 | retval |= NOUVEAU_DSM_HAS_MUX; |
248 | ||
9075e85f PL |
249 | if (nouveau_test_dsm(dhandle, nouveau_optimus_dsm, |
250 | NOUVEAU_DSM_OPTIMUS_FN)) | |
f19467c5 DA |
251 | retval |= NOUVEAU_DSM_HAS_OPT; |
252 | ||
253 | if (retval) | |
254 | nouveau_dsm_priv.dhandle = dhandle; | |
6ee73861 | 255 | |
f19467c5 | 256 | return retval; |
6ee73861 | 257 | } |
6a9ee8af DA |
258 | |
259 | static bool nouveau_dsm_detect(void) | |
260 | { | |
261 | char acpi_method_name[255] = { 0 }; | |
262 | struct acpi_buffer buffer = {sizeof(acpi_method_name), acpi_method_name}; | |
263 | struct pci_dev *pdev = NULL; | |
264 | int has_dsm = 0; | |
addde4ec | 265 | int has_optimus = 0; |
6a9ee8af | 266 | int vga_count = 0; |
8116188f | 267 | bool guid_valid; |
f19467c5 DA |
268 | int retval; |
269 | bool ret = false; | |
8116188f | 270 | |
f19467c5 | 271 | /* lookup the MXM GUID */ |
8116188f | 272 | guid_valid = mxm_wmi_supported(); |
8116188f | 273 | |
f19467c5 DA |
274 | if (guid_valid) |
275 | printk("MXM: GUID detected in BIOS\n"); | |
afeb3e11 | 276 | |
f19467c5 | 277 | /* now do DSM detection */ |
6a9ee8af DA |
278 | while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != NULL) { |
279 | vga_count++; | |
280 | ||
f19467c5 | 281 | retval = nouveau_dsm_pci_probe(pdev); |
f19467c5 DA |
282 | if (retval & NOUVEAU_DSM_HAS_MUX) |
283 | has_dsm |= 1; | |
284 | if (retval & NOUVEAU_DSM_HAS_OPT) | |
285 | has_optimus = 1; | |
6a9ee8af DA |
286 | } |
287 | ||
f19467c5 | 288 | if (vga_count == 2 && has_dsm && guid_valid) { |
d099230c PL |
289 | acpi_get_name(nouveau_dsm_priv.dhandle, ACPI_FULL_PATHNAME, |
290 | &buffer); | |
6a9ee8af | 291 | printk(KERN_INFO "VGA switcheroo: detected DSM switching method %s handle\n", |
d099230c | 292 | acpi_method_name); |
6a9ee8af | 293 | nouveau_dsm_priv.dsm_detected = true; |
f19467c5 | 294 | ret = true; |
6a9ee8af | 295 | } |
f19467c5 | 296 | |
d099230c PL |
297 | if (has_optimus == 1) { |
298 | acpi_get_name(nouveau_dsm_priv.dhandle, ACPI_FULL_PATHNAME, | |
299 | &buffer); | |
300 | printk(KERN_INFO "VGA switcheroo: detected Optimus DSM method %s handle\n", | |
301 | acpi_method_name); | |
f19467c5 | 302 | nouveau_dsm_priv.optimus_detected = true; |
d099230c PL |
303 | ret = true; |
304 | } | |
f19467c5 DA |
305 | |
306 | return ret; | |
6a9ee8af DA |
307 | } |
308 | ||
309 | void nouveau_register_dsm_handler(void) | |
310 | { | |
311 | bool r; | |
312 | ||
313 | r = nouveau_dsm_detect(); | |
314 | if (!r) | |
315 | return; | |
316 | ||
317 | vga_switcheroo_register_handler(&nouveau_dsm_handler); | |
318 | } | |
319 | ||
d099230c PL |
320 | /* Must be called for Optimus models before the card can be turned off */ |
321 | void nouveau_switcheroo_optimus_dsm(void) | |
322 | { | |
323 | u32 result = 0; | |
324 | if (!nouveau_dsm_priv.optimus_detected) | |
325 | return; | |
326 | ||
327 | nouveau_optimus_dsm(nouveau_dsm_priv.dhandle, NOUVEAU_DSM_OPTIMUS_FN, | |
328 | NOUVEAU_DSM_OPTIMUS_ARGS, &result); | |
329 | } | |
330 | ||
6a9ee8af DA |
331 | void nouveau_unregister_dsm_handler(void) |
332 | { | |
2f3787aa AH |
333 | if (nouveau_dsm_priv.optimus_detected || nouveau_dsm_priv.dsm_detected) |
334 | vga_switcheroo_unregister_handler(); | |
6a9ee8af | 335 | } |
afeb3e11 DA |
336 | |
337 | /* retrieve the ROM in 4k blocks */ | |
338 | static int nouveau_rom_call(acpi_handle rom_handle, uint8_t *bios, | |
339 | int offset, int len) | |
340 | { | |
341 | acpi_status status; | |
342 | union acpi_object rom_arg_elements[2], *obj; | |
343 | struct acpi_object_list rom_arg; | |
344 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL}; | |
345 | ||
346 | rom_arg.count = 2; | |
347 | rom_arg.pointer = &rom_arg_elements[0]; | |
348 | ||
349 | rom_arg_elements[0].type = ACPI_TYPE_INTEGER; | |
350 | rom_arg_elements[0].integer.value = offset; | |
351 | ||
352 | rom_arg_elements[1].type = ACPI_TYPE_INTEGER; | |
353 | rom_arg_elements[1].integer.value = len; | |
354 | ||
355 | status = acpi_evaluate_object(rom_handle, NULL, &rom_arg, &buffer); | |
356 | if (ACPI_FAILURE(status)) { | |
357 | printk(KERN_INFO "failed to evaluate ROM got %s\n", acpi_format_exception(status)); | |
358 | return -ENODEV; | |
359 | } | |
360 | obj = (union acpi_object *)buffer.pointer; | |
361 | memcpy(bios+offset, obj->buffer.pointer, len); | |
362 | kfree(buffer.pointer); | |
363 | return len; | |
364 | } | |
365 | ||
366 | bool nouveau_acpi_rom_supported(struct pci_dev *pdev) | |
367 | { | |
368 | acpi_status status; | |
369 | acpi_handle dhandle, rom_handle; | |
370 | ||
f19467c5 | 371 | if (!nouveau_dsm_priv.dsm_detected && !nouveau_dsm_priv.optimus_detected) |
afeb3e11 DA |
372 | return false; |
373 | ||
374 | dhandle = DEVICE_ACPI_HANDLE(&pdev->dev); | |
375 | if (!dhandle) | |
376 | return false; | |
377 | ||
378 | status = acpi_get_handle(dhandle, "_ROM", &rom_handle); | |
379 | if (ACPI_FAILURE(status)) | |
380 | return false; | |
381 | ||
382 | nouveau_dsm_priv.rom_handle = rom_handle; | |
383 | return true; | |
384 | } | |
385 | ||
386 | int nouveau_acpi_get_bios_chunk(uint8_t *bios, int offset, int len) | |
387 | { | |
388 | return nouveau_rom_call(nouveau_dsm_priv.rom_handle, bios, offset, len); | |
389 | } | |
a6ed76d7 BS |
390 | |
391 | int | |
392 | nouveau_acpi_edid(struct drm_device *dev, struct drm_connector *connector) | |
393 | { | |
394 | struct nouveau_connector *nv_connector = nouveau_connector(connector); | |
395 | struct acpi_device *acpidev; | |
396 | acpi_handle handle; | |
397 | int type, ret; | |
398 | void *edid; | |
399 | ||
400 | switch (connector->connector_type) { | |
401 | case DRM_MODE_CONNECTOR_LVDS: | |
402 | case DRM_MODE_CONNECTOR_eDP: | |
403 | type = ACPI_VIDEO_DISPLAY_LCD; | |
404 | break; | |
405 | default: | |
406 | return -EINVAL; | |
407 | } | |
408 | ||
409 | handle = DEVICE_ACPI_HANDLE(&dev->pdev->dev); | |
410 | if (!handle) | |
411 | return -ENODEV; | |
412 | ||
413 | ret = acpi_bus_get_device(handle, &acpidev); | |
414 | if (ret) | |
415 | return -ENODEV; | |
416 | ||
417 | ret = acpi_video_get_edid(acpidev, type, -1, &edid); | |
418 | if (ret < 0) | |
419 | return ret; | |
420 | ||
24b102d3 | 421 | nv_connector->edid = kmemdup(edid, EDID_LENGTH, GFP_KERNEL); |
a6ed76d7 BS |
422 | return 0; |
423 | } |