Commit ba6e34e6 authored by Ben Skeggs's avatar Ben Skeggs
Browse files

drm/gm204/devinit: initial implementation 



Starting from GM204, certain registers are no longer accessible by the host
(or unsigned PMU firmware).

This commit implements devinit on PMU, using a signed microcode image, and
devinit data, from the VBIOS.

Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent e21fd7c4

drivers/gpu/drm/nouveau/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -96,6 +96,7 @@ nouveau-y += core/subdev/devinit/nva3.o 
nouveau-y += core/subdev/devinit/nvaf.o

nouveau-y += core/subdev/devinit/nvc0.o

nouveau-y += core/subdev/devinit/gm107.o

nouveau-y += core/subdev/devinit/gm204.o

nouveau-y += core/subdev/fb/base.o

nouveau-y += core/subdev/fb/nv04.o

nouveau-y += core/subdev/fb/nv10.o

drivers/gpu/drm/nouveau/core/include/subdev/devinit.h

+1 −0
Original line number Diff line number Diff line
@@ -30,5 +30,6 @@ extern struct nouveau_oclass *nva3_devinit_oclass; 
extern struct nouveau_oclass *nvaf_devinit_oclass;

extern struct nouveau_oclass *nvc0_devinit_oclass;

extern struct nouveau_oclass *gm107_devinit_oclass;

extern struct nouveau_oclass *gm204_devinit_oclass;



#endif

drivers/gpu/drm/nouveau/core/subdev/devinit/gm107.c

+1 −1
Original line number Diff line number Diff line
@@ -24,7 +24,7 @@ 


#include "nv50.h"



static u64

u64

gm107_devinit_disable(struct nouveau_devinit *devinit)

{

	struct nv50_devinit_priv *priv = (void *)devinit;

drivers/gpu/drm/nouveau/core/subdev/devinit/gm204.c

0 → 100644
+173 −0
Original line number Diff line number Diff line 
/*

 * Copyright 2013 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/pmu.h>



#include "nv50.h"



static void

pmu_code(struct nv50_devinit_priv *priv, u32 pmu, u32 img, u32 len, bool sec)

{

	struct nouveau_bios *bios = nouveau_bios(priv);

	int i;



	nv_wr32(priv, 0x10a180, 0x01000000 | (sec ? 0x10000000 : 0) | pmu);

	for (i = 0; i < len; i += 4) {

		if ((i & 0xff) == 0)

			nv_wr32(priv, 0x10a188, (pmu + i) >> 8);

		nv_wr32(priv, 0x10a184, nv_ro32(bios, img + i));

	}



	while (i & 0xff) {

		nv_wr32(priv, 0x10a184, 0x00000000);

		i += 4;

	}

}



static void

pmu_data(struct nv50_devinit_priv *priv, u32 pmu, u32 img, u32 len)

{

	struct nouveau_bios *bios = nouveau_bios(priv);

	int i;



	nv_wr32(priv, 0x10a1c0, 0x01000000 | pmu);

	for (i = 0; i < len; i += 4)

		nv_wr32(priv, 0x10a1c4, nv_ro32(bios, img + i));

}



static u32

pmu_args(struct nv50_devinit_priv *priv, u32 argp, u32 argi)

{

	nv_wr32(priv, 0x10a1c0, argp);

	nv_wr32(priv, 0x10a1c0, nv_rd32(priv, 0x10a1c4) + argi);

	return nv_rd32(priv, 0x10a1c4);

}



static void

pmu_exec(struct nv50_devinit_priv *priv, u32 init_addr)

{

	nv_wr32(priv, 0x10a104, init_addr);

	nv_wr32(priv, 0x10a10c, 0x00000000);

	nv_wr32(priv, 0x10a100, 0x00000002);

}



static int

pmu_load(struct nv50_devinit_priv *priv, u8 type, bool post,

	 u32 *init_addr_pmu, u32 *args_addr_pmu)

{

	struct nouveau_bios *bios = nouveau_bios(priv);

	struct nvbios_pmuR pmu;



	if (!nvbios_pmuRm(bios, type, &pmu)) {

		nv_error(priv, "VBIOS PMU fuc %02x not found\n", type);

		return -EINVAL;

	}



	if (!post)

		return 0;



	pmu_code(priv, pmu.boot_addr_pmu, pmu.boot_addr, pmu.boot_size, false);

	pmu_code(priv, pmu.code_addr_pmu, pmu.code_addr, pmu.code_size, true);

	pmu_data(priv, pmu.data_addr_pmu, pmu.data_addr, pmu.data_size);



	if (init_addr_pmu) {

		*init_addr_pmu = pmu.init_addr_pmu;

		*args_addr_pmu = pmu.args_addr_pmu;

		return 0;

	}



	return pmu_exec(priv, pmu.init_addr_pmu), 0;

}



static int

gm204_devinit_post(struct nouveau_subdev *subdev, bool post)

{

	struct nv50_devinit_priv *priv = (void *)nouveau_devinit(subdev);

	struct nouveau_bios *bios = nouveau_bios(priv);

	struct bit_entry bit_I;

	u32 init, args;

	int ret;



	if (bit_entry(bios, 'I', &bit_I) || bit_I.version != 1 ||

					    bit_I.length < 0x1c) {

		nv_error(priv, "VBIOS PMU init data not found\n");

		return -EINVAL;

	}



	/* reset PMU and load init table parser ucode */

	if (post) {

		nv_mask(priv, 0x000200, 0x00002000, 0x00000000);

		nv_mask(priv, 0x000200, 0x00002000, 0x00002000);

		nv_rd32(priv, 0x000200);

		while (nv_rd32(priv, 0x10a10c) & 0x00000006) {

		}

	}



	ret = pmu_load(priv, 0x04, post, &init, &args);

	if (ret)

		return ret;



	/* upload first chunk of init data */

	if (post) {

		u32 pmu = pmu_args(priv, args + 0x08, 0x08);

		u32 img = nv_ro16(bios, bit_I.offset + 0x14);

		u32 len = nv_ro16(bios, bit_I.offset + 0x16);

		pmu_data(priv, pmu, img, len);

	}



	/* upload second chunk of init data */

	if (post) {

		u32 pmu = pmu_args(priv, args + 0x08, 0x10);

		u32 img = nv_ro16(bios, bit_I.offset + 0x18);

		u32 len = nv_ro16(bios, bit_I.offset + 0x1a);

		pmu_data(priv, pmu, img, len);

	}



	/* execute init tables */

	if (post) {

		nv_wr32(priv, 0x10a040, 0x00005000);

		pmu_exec(priv, init);

		while (!(nv_rd32(priv, 0x10a040) & 0x00002000)) {

		}

	}



	/* load and execute some other ucode image (bios therm?) */

	return pmu_load(priv, 0x01, post, NULL, NULL);

}



struct nouveau_oclass *

gm204_devinit_oclass = &(struct nouveau_devinit_impl) {

	.base.handle = NV_SUBDEV(DEVINIT, 0x07),

	.base.ofuncs = &(struct nouveau_ofuncs) {

		.ctor = nv50_devinit_ctor,

		.dtor = _nouveau_devinit_dtor,

		.init = nv50_devinit_init,

		.fini = _nouveau_devinit_fini,

	},

	.pll_set = nvc0_devinit_pll_set,

	.disable = gm107_devinit_disable,

	.post = gm204_devinit_post,

}.base;

drivers/gpu/drm/nouveau/core/subdev/devinit/nv50.h

+2 −0
Original line number Diff line number Diff line
@@ -18,4 +18,6 @@ int nva3_devinit_pll_set(struct nouveau_devinit *, u32, u32); 


int  nvc0_devinit_pll_set(struct nouveau_devinit *, u32, u32);



u64  gm107_devinit_disable(struct nouveau_devinit *);



#endif