[mirror_ubuntu-bionic-kernel.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 nvkm_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 nvkm_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 nvkm_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 nvkm_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 nvkm_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 nvkm_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	*/
50e216d6 BS	24	#include <subdev/bios.h>
	25	#include <subdev/bios/bit.h>
	26	#include <subdev/bios/image.h>
	27	#include <subdev/bios/pmu.h>
	28
	29	static u32
d390b480	30	weirdo_pointer(struct nvkm_bios *bios, u32 data)
50e216d6 BS	31	{
	32	struct nvbios_image image;
	33	int idx = 0;
	34	if (nvbios_image(bios, idx++, &image)) {
	35	data -= image.size;
	36	while (nvbios_image(bios, idx++, &image)) {
	37	if (image.type == 0xe0)
	38	return image.base + data;
	39	}
	40	}
	41	return 0;
	42	}
	43
	44	u32
d390b480	45	nvbios_pmuTe(struct nvkm_bios bios, u8 ver, u8 hdr, u8 cnt, u8 *len)
50e216d6 BS	46	{
	47	struct bit_entry bit_p;
	48	u32 data = 0;
	49
	50	if (!bit_entry(bios, 'p', &bit_p)) {
	51	if (bit_p.version == 2 && bit_p.length >= 4)
	52	data = nv_ro32(bios, bit_p.offset + 0x00);
	53	if ((data = weirdo_pointer(bios, data))) {
	54	ver = nv_ro08(bios, data + 0x00); / maybe? */
	55	*hdr = nv_ro08(bios, data + 0x01);
	56	*len = nv_ro08(bios, data + 0x02);
	57	*cnt = nv_ro08(bios, data + 0x03);
	58	}
	59	}
	60
	61	return data;
	62	}
	63
	64	u32
d390b480	65	nvbios_pmuTp(struct nvkm_bios bios, u8 ver, u8 hdr, u8 cnt, u8 *len,
50e216d6 BS	66	struct nvbios_pmuT *info)
	67	{
	68	u32 data = nvbios_pmuTe(bios, ver, hdr, cnt, len);
	69	memset(info, 0x00, sizeof(*info));
	70	switch (!!data * *ver) {
	71	default:
	72	break;
	73	}
	74	return data;
	75	}
	76
	77	u32
d390b480	78	nvbios_pmuEe(struct nvkm_bios bios, int idx, u8 ver, u8 *hdr)
50e216d6 BS	79	{
	80	u8 cnt, len;
	81	u32 data = nvbios_pmuTe(bios, ver, hdr, &cnt, &len);
	82	if (data && idx < cnt) {
	83	data = data + hdr + (idx len);
	84	*hdr = len;
	85	return data;
	86	}
	87	return 0;
	88	}
	89
	90	u32
d390b480	91	nvbios_pmuEp(struct nvkm_bios bios, int idx, u8 ver, u8 *hdr,
50e216d6 BS	92	struct nvbios_pmuE *info)
	93	{
	94	u32 data = nvbios_pmuEe(bios, idx, ver, hdr);
	95	memset(info, 0x00, sizeof(*info));
	96	switch (!!data * *ver) {
	97	default:
	98	info->type = nv_ro08(bios, data + 0x00);
	99	info->data = nv_ro32(bios, data + 0x02);
	100	break;
	101	}
	102	return data;
	103	}
	104
	105	bool
d390b480	106	nvbios_pmuRm(struct nvkm_bios bios, u8 type, struct nvbios_pmuR info)
50e216d6 BS	107	{
	108	struct nvbios_pmuE pmuE;
	109	u8 ver, hdr, idx = 0;
	110	u32 data;
	111	memset(info, 0x00, sizeof(*info));
	112	while ((data = nvbios_pmuEp(bios, idx++, &ver, &hdr, &pmuE))) {
	113	if ( pmuE.type == type &&
	114	(data = weirdo_pointer(bios, pmuE.data))) {
	115	info->init_addr_pmu = nv_ro32(bios, data + 0x08);
	116	info->args_addr_pmu = nv_ro32(bios, data + 0x0c);
	117	info->boot_addr = data + 0x30;
	118	info->boot_addr_pmu = nv_ro32(bios, data + 0x10) +
	119	nv_ro32(bios, data + 0x18);
	120	info->boot_size = nv_ro32(bios, data + 0x1c) -
	121	nv_ro32(bios, data + 0x18);
	122	info->code_addr = info->boot_addr + info->boot_size;
	123	info->code_addr_pmu = info->boot_addr_pmu +
	124	info->boot_size;
	125	info->code_size = nv_ro32(bios, data + 0x20);
	126	info->data_addr = data + 0x30 +
	127	nv_ro32(bios, data + 0x24);
	128	info->data_addr_pmu = nv_ro32(bios, data + 0x28);
	129	info->data_size = nv_ro32(bios, data + 0x2c);
	130	return true;
	131	}
	132	}
	133	return false;
	134	}