[linux-2.6-block.git] / drivers / gpu / drm / nouveau / nvkm / subdev / bios / disp.c

/*
 * Copyright 2012 Red Hat Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: Ben Skeggs
 */
#include <subdev/bios.h>
#include <subdev/bios/bit.h>
#include <subdev/bios/disp.h>

u16
nvbios_disp_table(struct nvkm_bios *bios,
		  u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *sub)
{
	struct bit_entry U;

	if (!bit_entry(bios, 'U', &U)) {
		if (U.version == 1) {
			u16 data = nvbios_rd16(bios, U.offset);
			if (data) {
				*ver = nvbios_rd08(bios, data + 0x00);
				switch (*ver) {
				case 0x20:
				case 0x21:
				case 0x22:
					*hdr = nvbios_rd08(bios, data + 0x01);
					*len = nvbios_rd08(bios, data + 0x02);
					*cnt = nvbios_rd08(bios, data + 0x03);
					*sub = nvbios_rd08(bios, data + 0x04);
					return data;
				default:
					break;
				}
			}
		}
	}

	return 0x0000;
}

u16
nvbios_disp_entry(struct nvkm_bios *bios, u8 idx, u8 *ver, u8 *len, u8 *sub)
{
	u8  hdr, cnt;
	u16 data = nvbios_disp_table(bios, ver, &hdr, &cnt, len, sub);
	if (data && idx < cnt)
		return data + hdr + (idx * *len);
	*ver = 0x00;
	return 0x0000;
}

u16
nvbios_disp_parse(struct nvkm_bios *bios, u8 idx, u8 *ver, u8 *len, u8 *sub,
		  struct nvbios_disp *info)
{
	u16 data = nvbios_disp_entry(bios, idx, ver, len, sub);
	if (data && *len >= 2) {
		info->data = nvbios_rd16(bios, data + 0);
		return data;
	}
	return 0x0000;
}

u16
nvbios_outp_entry(struct nvkm_bios *bios, u8 idx,
		  u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
{
	struct nvbios_disp info;
	u16 data = nvbios_disp_parse(bios, idx, ver, len, hdr, &info);
	if (data) {
		*cnt = nvbios_rd08(bios, info.data + 0x05);
		*len = 0x06;
		data = info.data;
	}
	return data;
}

u16
nvbios_outp_parse(struct nvkm_bios *bios, u8 idx,
		  u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_outp *info)
{
	u16 data = nvbios_outp_entry(bios, idx, ver, hdr, cnt, len);
	if (data && *hdr >= 0x0a) {
		info->type      = nvbios_rd16(bios, data + 0x00);
		info->mask      = nvbios_rd32(bios, data + 0x02);
		if (*ver <= 0x20) /* match any link */
			info->mask |= 0x00c0;
		info->script[0] = nvbios_rd16(bios, data + 0x06);
		info->script[1] = nvbios_rd16(bios, data + 0x08);
		info->script[2] = 0x0000;
		if (*hdr >= 0x0c)
			info->script[2] = nvbios_rd16(bios, data + 0x0a);
		return data;
	}
	return 0x0000;
}

u16
nvbios_outp_match(struct nvkm_bios *bios, u16 type, u16 mask,
		  u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_outp *info)
{
	u16 data, idx = 0;
	while ((data = nvbios_outp_parse(bios, idx++, ver, hdr, cnt, len, info)) || *ver) {
		if (data && info->type == type) {
			if ((info->mask & mask) == mask)
				break;
		}
	}
	return data;
}

u16
nvbios_ocfg_entry(struct nvkm_bios *bios, u16 outp, u8 idx,
		  u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
{
	if (idx < *cnt)
		return outp + *hdr + (idx * *len);
	return 0x0000;
}

u16
nvbios_ocfg_parse(struct nvkm_bios *bios, u16 outp, u8 idx,
		  u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_ocfg *info)
{
	u16 data = nvbios_ocfg_entry(bios, outp, idx, ver, hdr, cnt, len);
	if (data) {
		info->proto     = nvbios_rd08(bios, data + 0x00);
		info->flags     = nvbios_rd16(bios, data + 0x01);
		info->clkcmp[0] = nvbios_rd16(bios, data + 0x02);
		info->clkcmp[1] = nvbios_rd16(bios, data + 0x04);
	}
	return data;
}

u16
nvbios_ocfg_match(struct nvkm_bios *bios, u16 outp, u8 proto, u8 flags,
		  u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_ocfg *info)
{
	u16 data, idx = 0;
	while ((data = nvbios_ocfg_parse(bios, outp, idx++, ver, hdr, cnt, len, info))) {
		if ((info->proto == proto || info->proto == 0xff) &&
		    (info->flags == flags))
			break;
	}
	return data;
}

u16
nvbios_oclk_match(struct nvkm_bios *bios, u16 cmp, u32 khz)
{
	while (cmp) {
		if (khz / 10 >= nvbios_rd16(bios, cmp + 0x00))
			return  nvbios_rd16(bios, cmp + 0x02);
		cmp += 0x04;
	}
	return 0x0000;
}
Commit	Line	Data
b6caea50 BS	1	/*
	2	* Copyright 2012 Red Hat Inc.
	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 COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	18	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	19	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	20	* OTHER DEALINGS IN THE SOFTWARE.
	21	*
	22	* Authors: Ben Skeggs
	23	*/
b6caea50 BS	24	#include <subdev/bios.h>
	25	#include <subdev/bios/bit.h>
	26	#include <subdev/bios/disp.h>
	27
	28	u16
d390b480	29	nvbios_disp_table(struct nvkm_bios *bios,
b6caea50 BS	30	u8 ver, u8 hdr, u8 cnt, u8 len, u8 *sub)
	31	{
	32	struct bit_entry U;
	33
	34	if (!bit_entry(bios, 'U', &U)) {
	35	if (U.version == 1) {
7f5f518f	36	u16 data = nvbios_rd16(bios, U.offset);
b6caea50	37	if (data) {
7f5f518f	38	*ver = nvbios_rd08(bios, data + 0x00);
b6caea50 BS	39	switch (*ver) {
	40	case 0x20:
	41	case 0x21:
17187c81	42	case 0x22:
7f5f518f BS	43	*hdr = nvbios_rd08(bios, data + 0x01);
	44	*len = nvbios_rd08(bios, data + 0x02);
	45	*cnt = nvbios_rd08(bios, data + 0x03);
	46	*sub = nvbios_rd08(bios, data + 0x04);
b6caea50 BS	47	return data;
	48	default:
	49	break;
	50	}
	51	}
	52	}
	53	}
	54
	55	return 0x0000;
	56	}
	57
	58	u16
d390b480	59	nvbios_disp_entry(struct nvkm_bios bios, u8 idx, u8 ver, u8 len, u8 sub)
b6caea50 BS	60	{
	61	u8 hdr, cnt;
	62	u16 data = nvbios_disp_table(bios, ver, &hdr, &cnt, len, sub);
	63	if (data && idx < cnt)
	64	return data + hdr + (idx * *len);
	65	*ver = 0x00;
	66	return 0x0000;
	67	}
	68
	69	u16
d390b480	70	nvbios_disp_parse(struct nvkm_bios bios, u8 idx, u8 ver, u8 len, u8 sub,
b6caea50 BS	71	struct nvbios_disp *info)
	72	{
	73	u16 data = nvbios_disp_entry(bios, idx, ver, len, sub);
	74	if (data && *len >= 2) {
7f5f518f	75	info->data = nvbios_rd16(bios, data + 0);
b6caea50 BS	76	return data;
	77	}
	78	return 0x0000;
	79	}
	80
	81	u16
d390b480	82	nvbios_outp_entry(struct nvkm_bios *bios, u8 idx,
b6caea50 BS	83	u8 ver, u8 hdr, u8 cnt, u8 len)
	84	{
	85	struct nvbios_disp info;
	86	u16 data = nvbios_disp_parse(bios, idx, ver, len, hdr, &info);
	87	if (data) {
7f5f518f	88	*cnt = nvbios_rd08(bios, info.data + 0x05);
b6caea50 BS	89	*len = 0x06;
	90	data = info.data;
	91	}
	92	return data;
	93	}
	94
	95	u16
d390b480 BS	96	nvbios_outp_parse(struct nvkm_bios *bios, u8 idx,
d390b480 BS	97	u8 ver, u8 hdr, u8 cnt, u8 len, struct nvbios_outp *info)
b6caea50 BS	98	{
	99	u16 data = nvbios_outp_entry(bios, idx, ver, hdr, cnt, len);
	100	if (data && *hdr >= 0x0a) {
7f5f518f BS	101	info->type = nvbios_rd16(bios, data + 0x00);
7f5f518f BS	102	info->mask = nvbios_rd32(bios, data + 0x02);
b6caea50 BS	103	if (ver <= 0x20) / match any link */
b6caea50 BS	104	info->mask \|= 0x00c0;
7f5f518f BS	105	info->script[0] = nvbios_rd16(bios, data + 0x06);
7f5f518f BS	106	info->script[1] = nvbios_rd16(bios, data + 0x08);
b6caea50 BS	107	info->script[2] = 0x0000;
b6caea50 BS	108	if (*hdr >= 0x0c)
7f5f518f	109	info->script[2] = nvbios_rd16(bios, data + 0x0a);
b6caea50 BS	110	return data;
	111	}
	112	return 0x0000;
	113	}
	114
	115	u16
d390b480 BS	116	nvbios_outp_match(struct nvkm_bios *bios, u16 type, u16 mask,
d390b480 BS	117	u8 ver, u8 hdr, u8 cnt, u8 len, struct nvbios_outp *info)
b6caea50 BS	118	{
	119	u16 data, idx = 0;
	120	while ((data = nvbios_outp_parse(bios, idx++, ver, hdr, cnt, len, info)) \|\| *ver) {
	121	if (data && info->type == type) {
	122	if ((info->mask & mask) == mask)
	123	break;
	124	}
	125	}
	126	return data;
	127	}
	128
	129	u16
d390b480	130	nvbios_ocfg_entry(struct nvkm_bios *bios, u16 outp, u8 idx,
b6caea50 BS	131	u8 ver, u8 hdr, u8 cnt, u8 len)
	132	{
	133	if (idx < *cnt)
	134	return outp + hdr + (idx *len);
	135	return 0x0000;
	136	}
	137
	138	u16
d390b480 BS	139	nvbios_ocfg_parse(struct nvkm_bios *bios, u16 outp, u8 idx,
d390b480 BS	140	u8 ver, u8 hdr, u8 cnt, u8 len, struct nvbios_ocfg *info)
b6caea50 BS	141	{
	142	u16 data = nvbios_ocfg_entry(bios, outp, idx, ver, hdr, cnt, len);
	143	if (data) {
bc9139d2 BS	144	info->proto = nvbios_rd08(bios, data + 0x00);
bc9139d2 BS	145	info->flags = nvbios_rd16(bios, data + 0x01);
7f5f518f BS	146	info->clkcmp[0] = nvbios_rd16(bios, data + 0x02);
7f5f518f BS	147	info->clkcmp[1] = nvbios_rd16(bios, data + 0x04);
b6caea50 BS	148	}
	149	return data;
	150	}
	151
	152	u16
bc9139d2	153	nvbios_ocfg_match(struct nvkm_bios *bios, u16 outp, u8 proto, u8 flags,
d390b480	154	u8 ver, u8 hdr, u8 cnt, u8 len, struct nvbios_ocfg *info)
b6caea50 BS	155	{
	156	u16 data, idx = 0;
	157	while ((data = nvbios_ocfg_parse(bios, outp, idx++, ver, hdr, cnt, len, info))) {
bc9139d2 BS	158	if ((info->proto == proto \|\| info->proto == 0xff) &&
bc9139d2 BS	159	(info->flags == flags))
b6caea50 BS	160	break;
	161	}
	162	return data;
	163	}
	164
	165	u16
d390b480	166	nvbios_oclk_match(struct nvkm_bios *bios, u16 cmp, u32 khz)
b6caea50 BS	167	{
b6caea50 BS	168	while (cmp) {
7f5f518f BS	169	if (khz / 10 >= nvbios_rd16(bios, cmp + 0x00))
7f5f518f BS	170	return nvbios_rd16(bios, cmp + 0x02);
b6caea50 BS	171	cmp += 0x04;
	172	}
	173	return 0x0000;
	174	}