drm/nouveau/bios: add parsing of pmu image tables (50e216d6) · Commits · e / devices / android_kernel_fairphone_FP3

drivers/gpu/drm/nouveau/Makefile

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	@@ -48,6 +48,7 @@ nouveau-y += core/subdev/bios/npde.o
	nouveau-y += core/subdev/bios/pcir.o		nouveau-y += core/subdev/bios/pcir.o
	nouveau-y += core/subdev/bios/perf.o		nouveau-y += core/subdev/bios/perf.o
	nouveau-y += core/subdev/bios/pll.o		nouveau-y += core/subdev/bios/pll.o
			nouveau-y += core/subdev/bios/pmu.o
	nouveau-y += core/subdev/bios/ramcfg.o		nouveau-y += core/subdev/bios/ramcfg.o
	nouveau-y += core/subdev/bios/rammap.o		nouveau-y += core/subdev/bios/rammap.o
	nouveau-y += core/subdev/bios/shadow.o		nouveau-y += core/subdev/bios/shadow.o

drivers/gpu/drm/nouveau/core/include/subdev/bios/pmu.h

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+37 −0

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			#ifndef __NVBIOS_PMU_H__
			#define __NVBIOS_PMU_H__

			struct nvbios_pmuT {
			};

			u32 nvbios_pmuTe(struct nouveau_bios , u8 ver, u8 hdr, u8 cnt, u8 *len);
			u32 nvbios_pmuTp(struct nouveau_bios , u8 ver, u8 hdr, u8 cnt, u8 *len,
			struct nvbios_pmuT *);

			struct nvbios_pmuE {
			u8 type;
			u32 data;
			};

			u32 nvbios_pmuEe(struct nouveau_bios , int idx, u8 ver, u8 *hdr);
			u32 nvbios_pmuEp(struct nouveau_bios , int idx, u8 ver, u8 *hdr,
			struct nvbios_pmuE *);

			struct nvbios_pmuR {
			u32 boot_addr_pmu;
			u32 boot_addr;
			u32 boot_size;
			u32 code_addr_pmu;
			u32 code_addr;
			u32 code_size;
			u32 init_addr_pmu;

			u32 data_addr_pmu;
			u32 data_addr;
			u32 data_size;
			u32 args_addr_pmu;
			};

			bool nvbios_pmuRm(struct nouveau_bios , u8 type, struct nvbios_pmuR );

			#endif

drivers/gpu/drm/nouveau/core/subdev/bios/pmu.c

0 → 100644

+135 −0

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			/*
			* 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;
			}