[deliverable/linux.git] / drivers / gpu / drm / nouveau / nvkm / subdev / bios / pmu.c

/*
 * Copyright 2014 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 <bskeggs@redhat.com>
 */

#include <subdev/bios.h>
#include <subdev/bios/bit.h>
#include <subdev/bios/image.h>
#include <subdev/bios/pmu.h>

static u32
weirdo_pointer(struct nouveau_bios *bios, u32 data)
{
	struct nvbios_image image;
	int idx = 0;
	if (nvbios_image(bios, idx++, &image)) {
		data -= image.size;
		while (nvbios_image(bios, idx++, &image)) {
			if (image.type == 0xe0)
				return image.base + data;
		}
	}
	return 0;
}

u32
nvbios_pmuTe(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
{
	struct bit_entry bit_p;
	u32 data = 0;

	if (!bit_entry(bios, 'p', &bit_p)) {
		if (bit_p.version == 2 && bit_p.length >= 4)
			data = nv_ro32(bios, bit_p.offset + 0x00);
		if ((data = weirdo_pointer(bios, data))) {
			*ver = nv_ro08(bios, data + 0x00); /* maybe? */
			*hdr = nv_ro08(bios, data + 0x01);
			*len = nv_ro08(bios, data + 0x02);
			*cnt = nv_ro08(bios, data + 0x03);
		}
	}

	return data;
}

u32
nvbios_pmuTp(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
	     struct nvbios_pmuT *info)
{
	u32 data = nvbios_pmuTe(bios, ver, hdr, cnt, len);
	memset(info, 0x00, sizeof(*info));
	switch (!!data * *ver) {
	default:
		break;
	}
	return data;
}

u32
nvbios_pmuEe(struct nouveau_bios *bios, int idx, u8 *ver, u8 *hdr)
{
	u8  cnt, len;
	u32 data = nvbios_pmuTe(bios, ver, hdr, &cnt, &len);
	if (data && idx < cnt) {
		data = data + *hdr + (idx * len);
		*hdr = len;
		return data;
	}
	return 0;
}

u32
nvbios_pmuEp(struct nouveau_bios *bios, int idx, u8 *ver, u8 *hdr,
	     struct nvbios_pmuE *info)
{
	u32 data = nvbios_pmuEe(bios, idx, ver, hdr);
	memset(info, 0x00, sizeof(*info));
	switch (!!data * *ver) {
	default:
		info->type = nv_ro08(bios, data + 0x00);
		info->data = nv_ro32(bios, data + 0x02);
		break;
	}
	return data;
}

bool
nvbios_pmuRm(struct nouveau_bios *bios, u8 type, struct nvbios_pmuR *info)
{
	struct nvbios_pmuE pmuE;
	u8  ver, hdr, idx = 0;
	u32 data;
	memset(info, 0x00, sizeof(*info));
	while ((data = nvbios_pmuEp(bios, idx++, &ver, &hdr, &pmuE))) {
		if ( pmuE.type == type &&
		    (data = weirdo_pointer(bios, pmuE.data))) {
			info->init_addr_pmu = nv_ro32(bios, data + 0x08);
			info->args_addr_pmu = nv_ro32(bios, data + 0x0c);
			info->boot_addr     = data + 0x30;
			info->boot_addr_pmu = nv_ro32(bios, data + 0x10) +
					      nv_ro32(bios, data + 0x18);
			info->boot_size     = nv_ro32(bios, data + 0x1c) -
					      nv_ro32(bios, data + 0x18);
			info->code_addr     = info->boot_addr + info->boot_size;
			info->code_addr_pmu = info->boot_addr_pmu +
					      info->boot_size;
			info->code_size     = nv_ro32(bios, data + 0x20);
			info->data_addr     = data + 0x30 +
					      nv_ro32(bios, data + 0x24);
			info->data_addr_pmu = nv_ro32(bios, data + 0x28);
			info->data_size     = nv_ro32(bios, data + 0x2c);
			return true;
		}
	}
	return false;
}
Commit	Line	Data
50e216d6 BS	1	/*
	2	* Copyright 2014 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 <bskeggs@redhat.com>
	23	*/
	24
	25	#include <subdev/bios.h>
	26	#include <subdev/bios/bit.h>
	27	#include <subdev/bios/image.h>
	28	#include <subdev/bios/pmu.h>
	29
	30	static u32
	31	weirdo_pointer(struct nouveau_bios *bios, u32 data)
	32	{
	33	struct nvbios_image image;
	34	int idx = 0;
	35	if (nvbios_image(bios, idx++, &image)) {
	36	data -= image.size;
	37	while (nvbios_image(bios, idx++, &image)) {
	38	if (image.type == 0xe0)
	39	return image.base + data;
	40	}
	41	}
	42	return 0;
	43	}
	44
	45	u32
	46	nvbios_pmuTe(struct nouveau_bios bios, u8 ver, u8 hdr, u8 cnt, u8 *len)
	47	{
	48	struct bit_entry bit_p;
	49	u32 data = 0;
	50
	51	if (!bit_entry(bios, 'p', &bit_p)) {
	52	if (bit_p.version == 2 && bit_p.length >= 4)
	53	data = nv_ro32(bios, bit_p.offset + 0x00);
	54	if ((data = weirdo_pointer(bios, data))) {
	55	ver = nv_ro08(bios, data + 0x00); / maybe? */
	56	*hdr = nv_ro08(bios, data + 0x01);
	57	*len = nv_ro08(bios, data + 0x02);
	58	*cnt = nv_ro08(bios, data + 0x03);
	59	}
	60	}
	61
	62	return data;
	63	}
	64
65	u32
66	nvbios_pmuTp(struct nouveau_bios bios, u8 ver, u8 hdr, u8 cnt, u8 *len,
67	struct nvbios_pmuT *info)
68	{
69	u32 data = nvbios_pmuTe(bios, ver, hdr, cnt, len);
70	memset(info, 0x00, sizeof(*info));
71	switch (!!data * *ver) {
72	default:
73	break;
74	}
75	return data;
76	}
77
78	u32
79	nvbios_pmuEe(struct nouveau_bios bios, int idx, u8 ver, u8 *hdr)
80	{
81	u8 cnt, len;
82	u32 data = nvbios_pmuTe(bios, ver, hdr, &cnt, &len);
83	if (data && idx < cnt) {
84	data = data + hdr + (idx len);
85	*hdr = len;
86	return data;
87	}
88	return 0;
89	}
90
91	u32
92	nvbios_pmuEp(struct nouveau_bios bios, int idx, u8 ver, u8 *hdr,
93	struct nvbios_pmuE *info)
94	{
95	u32 data = nvbios_pmuEe(bios, idx, ver, hdr);
96	memset(info, 0x00, sizeof(*info));
97	switch (!!data * *ver) {
98	default:
99	info->type = nv_ro08(bios, data + 0x00);
100	info->data = nv_ro32(bios, data + 0x02);
101	break;
102	}
103	return data;
104	}
105
106	bool
107	nvbios_pmuRm(struct nouveau_bios bios, u8 type, struct nvbios_pmuR info)
108	{
109	struct nvbios_pmuE pmuE;
110	u8 ver, hdr, idx = 0;
111	u32 data;
112	memset(info, 0x00, sizeof(*info));
113	while ((data = nvbios_pmuEp(bios, idx++, &ver, &hdr, &pmuE))) {
114	if ( pmuE.type == type &&
115	(data = weirdo_pointer(bios, pmuE.data))) {
116	info->init_addr_pmu = nv_ro32(bios, data + 0x08);
117	info->args_addr_pmu = nv_ro32(bios, data + 0x0c);
118	info->boot_addr = data + 0x30;
119	info->boot_addr_pmu = nv_ro32(bios, data + 0x10) +
120	nv_ro32(bios, data + 0x18);
121	info->boot_size = nv_ro32(bios, data + 0x1c) -
122	nv_ro32(bios, data + 0x18);
123	info->code_addr = info->boot_addr + info->boot_size;
124	info->code_addr_pmu = info->boot_addr_pmu +
125	info->boot_size;
126	info->code_size = nv_ro32(bios, data + 0x20);
127	info->data_addr = data + 0x30 +
128	nv_ro32(bios, data + 0x24);
129	info->data_addr_pmu = nv_ro32(bios, data + 0x28);
130	info->data_size = nv_ro32(bios, data + 0x2c);
131	return true;
132	}
133	}
134	return false;
135	}