xref: /openbmc/linux/drivers/gpu/drm/nouveau/dispnv04/hw.h (revision 3a2b9272)
1 /*
2  * Copyright 2008 Stuart Bennett
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 shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
18  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
19  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20  * SOFTWARE.
21  */
22 
23 #ifndef __NOUVEAU_HW_H__
24 #define __NOUVEAU_HW_H__
25 
26 #include "disp.h"
27 #include "nvreg.h"
28 
29 #include <subdev/bios/pll.h>
30 
31 #define MASK(field) ( \
32 	(0xffffffff >> (31 - ((1 ? field) - (0 ? field)))) << (0 ? field))
33 
34 #define XLATE(src, srclowbit, outfield) ( \
35 	(((src) >> (srclowbit)) << (0 ? outfield)) & MASK(outfield))
36 
37 void NVWriteVgaSeq(struct drm_device *, int head, uint8_t index, uint8_t value);
38 uint8_t NVReadVgaSeq(struct drm_device *, int head, uint8_t index);
39 void NVWriteVgaGr(struct drm_device *, int head, uint8_t index, uint8_t value);
40 uint8_t NVReadVgaGr(struct drm_device *, int head, uint8_t index);
41 void NVSetOwner(struct drm_device *, int owner);
42 void NVBlankScreen(struct drm_device *, int head, bool blank);
43 int nouveau_hw_get_pllvals(struct drm_device *, enum nvbios_pll_type plltype,
44 			   struct nvkm_pll_vals *pllvals);
45 int nouveau_hw_pllvals_to_clk(struct nvkm_pll_vals *pllvals);
46 int nouveau_hw_get_clock(struct drm_device *, enum nvbios_pll_type plltype);
47 void nouveau_hw_save_vga_fonts(struct drm_device *, bool save);
48 void nouveau_hw_save_state(struct drm_device *, int head,
49 			   struct nv04_mode_state *state);
50 void nouveau_hw_load_state(struct drm_device *, int head,
51 			   struct nv04_mode_state *state);
52 void nouveau_hw_load_state_palette(struct drm_device *, int head,
53 				   struct nv04_mode_state *state);
54 
55 /* nouveau_calc.c */
56 extern void nouveau_calc_arb(struct drm_device *, int vclk, int bpp,
57 			     int *burst, int *lwm);
58 
NVReadCRTC(struct drm_device * dev,int head,uint32_t reg)59 static inline uint32_t NVReadCRTC(struct drm_device *dev,
60 					int head, uint32_t reg)
61 {
62 	struct nvif_object *device = &nouveau_drm(dev)->client.device.object;
63 	uint32_t val;
64 	if (head)
65 		reg += NV_PCRTC0_SIZE;
66 	val = nvif_rd32(device, reg);
67 	return val;
68 }
69 
NVWriteCRTC(struct drm_device * dev,int head,uint32_t reg,uint32_t val)70 static inline void NVWriteCRTC(struct drm_device *dev,
71 					int head, uint32_t reg, uint32_t val)
72 {
73 	struct nvif_object *device = &nouveau_drm(dev)->client.device.object;
74 	if (head)
75 		reg += NV_PCRTC0_SIZE;
76 	nvif_wr32(device, reg, val);
77 }
78 
NVReadRAMDAC(struct drm_device * dev,int head,uint32_t reg)79 static inline uint32_t NVReadRAMDAC(struct drm_device *dev,
80 					int head, uint32_t reg)
81 {
82 	struct nvif_object *device = &nouveau_drm(dev)->client.device.object;
83 	uint32_t val;
84 	if (head)
85 		reg += NV_PRAMDAC0_SIZE;
86 	val = nvif_rd32(device, reg);
87 	return val;
88 }
89 
NVWriteRAMDAC(struct drm_device * dev,int head,uint32_t reg,uint32_t val)90 static inline void NVWriteRAMDAC(struct drm_device *dev,
91 					int head, uint32_t reg, uint32_t val)
92 {
93 	struct nvif_object *device = &nouveau_drm(dev)->client.device.object;
94 	if (head)
95 		reg += NV_PRAMDAC0_SIZE;
96 	nvif_wr32(device, reg, val);
97 }
98 
nv_read_tmds(struct drm_device * dev,int or,int dl,uint8_t address)99 static inline uint8_t nv_read_tmds(struct drm_device *dev,
100 					int or, int dl, uint8_t address)
101 {
102 	int ramdac = (or & DCB_OUTPUT_C) >> 2;
103 
104 	NVWriteRAMDAC(dev, ramdac, NV_PRAMDAC_FP_TMDS_CONTROL + dl * 8,
105 	NV_PRAMDAC_FP_TMDS_CONTROL_WRITE_DISABLE | address);
106 	return NVReadRAMDAC(dev, ramdac, NV_PRAMDAC_FP_TMDS_DATA + dl * 8);
107 }
108 
nv_write_tmds(struct drm_device * dev,int or,int dl,uint8_t address,uint8_t data)109 static inline void nv_write_tmds(struct drm_device *dev,
110 					int or, int dl, uint8_t address,
111 					uint8_t data)
112 {
113 	int ramdac = (or & DCB_OUTPUT_C) >> 2;
114 
115 	NVWriteRAMDAC(dev, ramdac, NV_PRAMDAC_FP_TMDS_DATA + dl * 8, data);
116 	NVWriteRAMDAC(dev, ramdac, NV_PRAMDAC_FP_TMDS_CONTROL + dl * 8, address);
117 }
118 
NVWriteVgaCrtc(struct drm_device * dev,int head,uint8_t index,uint8_t value)119 static inline void NVWriteVgaCrtc(struct drm_device *dev,
120 					int head, uint8_t index, uint8_t value)
121 {
122 	struct nvif_object *device = &nouveau_drm(dev)->client.device.object;
123 	nvif_wr08(device, NV_PRMCIO_CRX__COLOR + head * NV_PRMCIO_SIZE, index);
124 	nvif_wr08(device, NV_PRMCIO_CR__COLOR + head * NV_PRMCIO_SIZE, value);
125 }
126 
NVReadVgaCrtc(struct drm_device * dev,int head,uint8_t index)127 static inline uint8_t NVReadVgaCrtc(struct drm_device *dev,
128 					int head, uint8_t index)
129 {
130 	struct nvif_object *device = &nouveau_drm(dev)->client.device.object;
131 	uint8_t val;
132 	nvif_wr08(device, NV_PRMCIO_CRX__COLOR + head * NV_PRMCIO_SIZE, index);
133 	val = nvif_rd08(device, NV_PRMCIO_CR__COLOR + head * NV_PRMCIO_SIZE);
134 	return val;
135 }
136 
137 /* CR57 and CR58 are a fun pair of regs. CR57 provides an index (0-0xf) for CR58
138  * I suspect they in fact do nothing, but are merely a way to carry useful
139  * per-head variables around
140  *
141  * Known uses:
142  * CR57		CR58
143  * 0x00		index to the appropriate dcb entry (or 7f for inactive)
144  * 0x02		dcb entry's "or" value (or 00 for inactive)
145  * 0x03		bit0 set for dual link (LVDS, possibly elsewhere too)
146  * 0x08 or 0x09	pxclk in MHz
147  * 0x0f		laptop panel info -	low nibble for PEXTDEV_BOOT_0 strap
148  * 					high nibble for xlat strap value
149  */
150 
151 static inline void
NVWriteVgaCrtc5758(struct drm_device * dev,int head,uint8_t index,uint8_t value)152 NVWriteVgaCrtc5758(struct drm_device *dev, int head, uint8_t index, uint8_t value)
153 {
154 	NVWriteVgaCrtc(dev, head, NV_CIO_CRE_57, index);
155 	NVWriteVgaCrtc(dev, head, NV_CIO_CRE_58, value);
156 }
157 
NVReadVgaCrtc5758(struct drm_device * dev,int head,uint8_t index)158 static inline uint8_t NVReadVgaCrtc5758(struct drm_device *dev, int head, uint8_t index)
159 {
160 	NVWriteVgaCrtc(dev, head, NV_CIO_CRE_57, index);
161 	return NVReadVgaCrtc(dev, head, NV_CIO_CRE_58);
162 }
163 
NVReadPRMVIO(struct drm_device * dev,int head,uint32_t reg)164 static inline uint8_t NVReadPRMVIO(struct drm_device *dev,
165 					int head, uint32_t reg)
166 {
167 	struct nvif_object *device = &nouveau_drm(dev)->client.device.object;
168 	struct nouveau_drm *drm = nouveau_drm(dev);
169 	uint8_t val;
170 
171 	/* Only NV4x have two pvio ranges; other twoHeads cards MUST call
172 	 * NVSetOwner for the relevant head to be programmed */
173 	if (head && drm->client.device.info.family == NV_DEVICE_INFO_V0_CURIE)
174 		reg += NV_PRMVIO_SIZE;
175 
176 	val = nvif_rd08(device, reg);
177 	return val;
178 }
179 
NVWritePRMVIO(struct drm_device * dev,int head,uint32_t reg,uint8_t value)180 static inline void NVWritePRMVIO(struct drm_device *dev,
181 					int head, uint32_t reg, uint8_t value)
182 {
183 	struct nvif_object *device = &nouveau_drm(dev)->client.device.object;
184 	struct nouveau_drm *drm = nouveau_drm(dev);
185 
186 	/* Only NV4x have two pvio ranges; other twoHeads cards MUST call
187 	 * NVSetOwner for the relevant head to be programmed */
188 	if (head && drm->client.device.info.family == NV_DEVICE_INFO_V0_CURIE)
189 		reg += NV_PRMVIO_SIZE;
190 
191 	nvif_wr08(device, reg, value);
192 }
193 
NVSetEnablePalette(struct drm_device * dev,int head,bool enable)194 static inline void NVSetEnablePalette(struct drm_device *dev, int head, bool enable)
195 {
196 	struct nvif_object *device = &nouveau_drm(dev)->client.device.object;
197 	nvif_rd08(device, NV_PRMCIO_INP0__COLOR + head * NV_PRMCIO_SIZE);
198 	nvif_wr08(device, NV_PRMCIO_ARX + head * NV_PRMCIO_SIZE, enable ? 0 : 0x20);
199 }
200 
NVGetEnablePalette(struct drm_device * dev,int head)201 static inline bool NVGetEnablePalette(struct drm_device *dev, int head)
202 {
203 	struct nvif_object *device = &nouveau_drm(dev)->client.device.object;
204 	nvif_rd08(device, NV_PRMCIO_INP0__COLOR + head * NV_PRMCIO_SIZE);
205 	return !(nvif_rd08(device, NV_PRMCIO_ARX + head * NV_PRMCIO_SIZE) & 0x20);
206 }
207 
NVWriteVgaAttr(struct drm_device * dev,int head,uint8_t index,uint8_t value)208 static inline void NVWriteVgaAttr(struct drm_device *dev,
209 					int head, uint8_t index, uint8_t value)
210 {
211 	struct nvif_object *device = &nouveau_drm(dev)->client.device.object;
212 	if (NVGetEnablePalette(dev, head))
213 		index &= ~0x20;
214 	else
215 		index |= 0x20;
216 
217 	nvif_rd08(device, NV_PRMCIO_INP0__COLOR + head * NV_PRMCIO_SIZE);
218 	nvif_wr08(device, NV_PRMCIO_ARX + head * NV_PRMCIO_SIZE, index);
219 	nvif_wr08(device, NV_PRMCIO_AR__WRITE + head * NV_PRMCIO_SIZE, value);
220 }
221 
NVReadVgaAttr(struct drm_device * dev,int head,uint8_t index)222 static inline uint8_t NVReadVgaAttr(struct drm_device *dev,
223 					int head, uint8_t index)
224 {
225 	struct nvif_object *device = &nouveau_drm(dev)->client.device.object;
226 	uint8_t val;
227 	if (NVGetEnablePalette(dev, head))
228 		index &= ~0x20;
229 	else
230 		index |= 0x20;
231 
232 	nvif_rd08(device, NV_PRMCIO_INP0__COLOR + head * NV_PRMCIO_SIZE);
233 	nvif_wr08(device, NV_PRMCIO_ARX + head * NV_PRMCIO_SIZE, index);
234 	val = nvif_rd08(device, NV_PRMCIO_AR__READ + head * NV_PRMCIO_SIZE);
235 	return val;
236 }
237 
NVVgaSeqReset(struct drm_device * dev,int head,bool start)238 static inline void NVVgaSeqReset(struct drm_device *dev, int head, bool start)
239 {
240 	NVWriteVgaSeq(dev, head, NV_VIO_SR_RESET_INDEX, start ? 0x1 : 0x3);
241 }
242 
NVVgaProtect(struct drm_device * dev,int head,bool protect)243 static inline void NVVgaProtect(struct drm_device *dev, int head, bool protect)
244 {
245 	uint8_t seq1 = NVReadVgaSeq(dev, head, NV_VIO_SR_CLOCK_INDEX);
246 
247 	if (protect) {
248 		NVVgaSeqReset(dev, head, true);
249 		NVWriteVgaSeq(dev, head, NV_VIO_SR_CLOCK_INDEX, seq1 | 0x20);
250 	} else {
251 		/* Reenable sequencer, then turn on screen */
252 		NVWriteVgaSeq(dev, head, NV_VIO_SR_CLOCK_INDEX, seq1 & ~0x20);   /* reenable display */
253 		NVVgaSeqReset(dev, head, false);
254 	}
255 	NVSetEnablePalette(dev, head, protect);
256 }
257 
258 static inline bool
nv_heads_tied(struct drm_device * dev)259 nv_heads_tied(struct drm_device *dev)
260 {
261 	struct nvif_object *device = &nouveau_drm(dev)->client.device.object;
262 	struct nouveau_drm *drm = nouveau_drm(dev);
263 
264 	if (drm->client.device.info.chipset == 0x11)
265 		return !!(nvif_rd32(device, NV_PBUS_DEBUG_1) & (1 << 28));
266 
267 	return NVReadVgaCrtc(dev, 0, NV_CIO_CRE_44) & 0x4;
268 }
269 
270 /* makes cr0-7 on the specified head read-only */
271 static inline bool
nv_lock_vga_crtc_base(struct drm_device * dev,int head,bool lock)272 nv_lock_vga_crtc_base(struct drm_device *dev, int head, bool lock)
273 {
274 	uint8_t cr11 = NVReadVgaCrtc(dev, head, NV_CIO_CR_VRE_INDEX);
275 	bool waslocked = cr11 & 0x80;
276 
277 	if (lock)
278 		cr11 |= 0x80;
279 	else
280 		cr11 &= ~0x80;
281 	NVWriteVgaCrtc(dev, head, NV_CIO_CR_VRE_INDEX, cr11);
282 
283 	return waslocked;
284 }
285 
286 static inline void
nv_lock_vga_crtc_shadow(struct drm_device * dev,int head,int lock)287 nv_lock_vga_crtc_shadow(struct drm_device *dev, int head, int lock)
288 {
289 	/* shadow lock: connects 0x60?3d? regs to "real" 0x3d? regs
290 	 * bit7: unlocks HDT, HBS, HBE, HRS, HRE, HEB
291 	 * bit6: seems to have some effect on CR09 (double scan, VBS_9)
292 	 * bit5: unlocks HDE
293 	 * bit4: unlocks VDE
294 	 * bit3: unlocks VDT, OVL, VRS, ?VRE?, VBS, VBE, LSR, EBR
295 	 * bit2: same as bit 1 of 0x60?804
296 	 * bit0: same as bit 0 of 0x60?804
297 	 */
298 
299 	uint8_t cr21 = lock;
300 
301 	if (lock < 0)
302 		/* 0xfa is generic "unlock all" mask */
303 		cr21 = NVReadVgaCrtc(dev, head, NV_CIO_CRE_21) | 0xfa;
304 
305 	NVWriteVgaCrtc(dev, head, NV_CIO_CRE_21, cr21);
306 }
307 
308 /* renders the extended crtc regs (cr19+) on all crtcs impervious:
309  * immutable and unreadable
310  */
311 static inline bool
NVLockVgaCrtcs(struct drm_device * dev,bool lock)312 NVLockVgaCrtcs(struct drm_device *dev, bool lock)
313 {
314 	struct nouveau_drm *drm = nouveau_drm(dev);
315 	bool waslocked = !NVReadVgaCrtc(dev, 0, NV_CIO_SR_LOCK_INDEX);
316 
317 	NVWriteVgaCrtc(dev, 0, NV_CIO_SR_LOCK_INDEX,
318 		       lock ? NV_CIO_SR_LOCK_VALUE : NV_CIO_SR_UNLOCK_RW_VALUE);
319 	/* NV11 has independently lockable extended crtcs, except when tied */
320 	if (drm->client.device.info.chipset == 0x11 && !nv_heads_tied(dev))
321 		NVWriteVgaCrtc(dev, 1, NV_CIO_SR_LOCK_INDEX,
322 			       lock ? NV_CIO_SR_LOCK_VALUE :
323 				      NV_CIO_SR_UNLOCK_RW_VALUE);
324 
325 	return waslocked;
326 }
327 
328 /* nv04 cursor max dimensions of 32x32 (A1R5G5B5) */
329 #define NV04_CURSOR_SIZE 32
330 /* limit nv10 cursors to 64x64 (ARGB8) (we could go to 64x255) */
331 #define NV10_CURSOR_SIZE 64
332 
nv_cursor_width(struct drm_device * dev)333 static inline int nv_cursor_width(struct drm_device *dev)
334 {
335 	struct nouveau_drm *drm = nouveau_drm(dev);
336 
337 	return drm->client.device.info.family >= NV_DEVICE_INFO_V0_CELSIUS ? NV10_CURSOR_SIZE : NV04_CURSOR_SIZE;
338 }
339 
340 static inline void
nv_fix_nv40_hw_cursor(struct drm_device * dev,int head)341 nv_fix_nv40_hw_cursor(struct drm_device *dev, int head)
342 {
343 	/* on some nv40 (such as the "true" (in the NV_PFB_BOOT_0 sense) nv40,
344 	 * the gf6800gt) a hardware bug requires a write to PRAMDAC_CURSOR_POS
345 	 * for changes to the CRTC CURCTL regs to take effect, whether changing
346 	 * the pixmap location, or just showing/hiding the cursor
347 	 */
348 	uint32_t curpos = NVReadRAMDAC(dev, head, NV_PRAMDAC_CU_START_POS);
349 	NVWriteRAMDAC(dev, head, NV_PRAMDAC_CU_START_POS, curpos);
350 }
351 
352 static inline void
nv_set_crtc_base(struct drm_device * dev,int head,uint32_t offset)353 nv_set_crtc_base(struct drm_device *dev, int head, uint32_t offset)
354 {
355 	struct nouveau_drm *drm = nouveau_drm(dev);
356 
357 	NVWriteCRTC(dev, head, NV_PCRTC_START, offset);
358 
359 	if (drm->client.device.info.family == NV_DEVICE_INFO_V0_TNT) {
360 		/*
361 		 * Hilarious, the 24th bit doesn't want to stick to
362 		 * PCRTC_START...
363 		 */
364 		int cre_heb = NVReadVgaCrtc(dev, head, NV_CIO_CRE_HEB__INDEX);
365 
366 		NVWriteVgaCrtc(dev, head, NV_CIO_CRE_HEB__INDEX,
367 			       (cre_heb & ~0x40) | ((offset >> 18) & 0x40));
368 	}
369 }
370 
371 static inline void
nv_show_cursor(struct drm_device * dev,int head,bool show)372 nv_show_cursor(struct drm_device *dev, int head, bool show)
373 {
374 	struct nouveau_drm *drm = nouveau_drm(dev);
375 	uint8_t *curctl1 =
376 		&nv04_display(dev)->mode_reg.crtc_reg[head].CRTC[NV_CIO_CRE_HCUR_ADDR1_INDEX];
377 
378 	if (show)
379 		*curctl1 |= MASK(NV_CIO_CRE_HCUR_ADDR1_ENABLE);
380 	else
381 		*curctl1 &= ~MASK(NV_CIO_CRE_HCUR_ADDR1_ENABLE);
382 	NVWriteVgaCrtc(dev, head, NV_CIO_CRE_HCUR_ADDR1_INDEX, *curctl1);
383 
384 	if (drm->client.device.info.family == NV_DEVICE_INFO_V0_CURIE)
385 		nv_fix_nv40_hw_cursor(dev, head);
386 }
387 
388 static inline uint32_t
nv_pitch_align(struct drm_device * dev,uint32_t width,int bpp)389 nv_pitch_align(struct drm_device *dev, uint32_t width, int bpp)
390 {
391 	struct nouveau_drm *drm = nouveau_drm(dev);
392 	int mask;
393 
394 	if (bpp == 15)
395 		bpp = 16;
396 	if (bpp == 24)
397 		bpp = 8;
398 
399 	/* Alignment requirements taken from the Haiku driver */
400 	if (drm->client.device.info.family == NV_DEVICE_INFO_V0_TNT)
401 		mask = 128 / bpp - 1;
402 	else
403 		mask = 512 / bpp - 1;
404 
405 	return (width + mask) & ~mask;
406 }
407 
408 #endif	/* __NOUVEAU_HW_H__ */
409