From 1a72f2bd1e2e5e52de5f2f3e6f7876d6decc4caa Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Tue, 4 Nov 2014 13:04:35 +1000 Subject: [PATCH] drm/nouveau/fb: make use of M0203 routines for ram type determination Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/core/subdev/fb/base.c | 37 ++++++++----------- 1 file changed, 15 insertions(+), 22 deletions(-) diff --git a/drivers/gpu/drm/nouveau/core/subdev/fb/base.c b/drivers/gpu/drm/nouveau/core/subdev/fb/base.c index f009d8a39d9d..c866148c440f 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/fb/base.c +++ b/drivers/gpu/drm/nouveau/core/subdev/fb/base.c @@ -23,37 +23,30 @@ */ #include -#include +#include #include "priv.h" int nouveau_fb_bios_memtype(struct nouveau_bios *bios) { - struct bit_entry M; - u8 ramcfg; - - ramcfg = (nv_rd32(bios, 0x101000) & 0x0000003c) >> 2; - if (!bit_entry(bios, 'M', &M) && M.version == 2 && M.length >= 5) { - u16 table = nv_ro16(bios, M.offset + 3); - u8 version = nv_ro08(bios, table + 0); - u8 header = nv_ro08(bios, table + 1); - u8 record = nv_ro08(bios, table + 2); - u8 entries = nv_ro08(bios, table + 3); - if (table && version == 0x10 && ramcfg < entries) { - u16 entry = table + header + (ramcfg * record); - switch (nv_ro08(bios, entry) & 0x0f) { - case 0: return NV_MEM_TYPE_DDR2; - case 1: return NV_MEM_TYPE_DDR3; - case 2: return NV_MEM_TYPE_GDDR3; - case 3: return NV_MEM_TYPE_GDDR5; - default: - break; - } - + const u8 ramcfg = (nv_rd32(bios, 0x101000) & 0x0000003c) >> 2; + struct nvbios_M0203E M0203E; + u8 ver, hdr; + + if (nvbios_M0203Em(bios, ramcfg, &ver, &hdr, &M0203E)) { + switch (M0203E.type) { + case M0203E_TYPE_DDR2 : return NV_MEM_TYPE_DDR2; + case M0203E_TYPE_DDR3 : return NV_MEM_TYPE_DDR3; + case M0203E_TYPE_GDDR3: return NV_MEM_TYPE_GDDR3; + case M0203E_TYPE_GDDR5: return NV_MEM_TYPE_GDDR5; + default: + nv_warn(bios, "M0203E type %02x\n", M0203E.type); + return NV_MEM_TYPE_UNKNOWN; } } + nv_warn(bios, "M0203E not matched!\n"); return NV_MEM_TYPE_UNKNOWN; } -- 2.20.1