From b0c7336b1ad1d281935aa254b2272827f19ab7e5 Mon Sep 17 00:00:00 2001 From: Roy Spliet Date: Thu, 2 Oct 2014 18:01:55 +0200 Subject: [PATCH] drm/nouveau/fb/ramnva3: Reclocking script for DDR2 Signed-off-by: Roy Spliet Signed-off-by: Ben Skeggs --- .../gpu/drm/nouveau/core/subdev/fb/ramnva3.c | 57 ++++++++++++++----- 1 file changed, 42 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/nouveau/core/subdev/fb/ramnva3.c b/drivers/gpu/drm/nouveau/core/subdev/fb/ramnva3.c index 7cff2d40ff2e..0e1697aa409a 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/fb/ramnva3.c +++ b/drivers/gpu/drm/nouveau/core/subdev/fb/ramnva3.c @@ -356,7 +356,7 @@ nva3_ram_timing_calc(struct nouveau_fb *pfb, u32 *timing) { struct nva3_ram *ram = (void *)pfb->ram; struct nvbios_ramcfg *cfg = &ram->base.target.bios; - int tUNK_base; + int tUNK_base, tUNK_40_0, prevCL; u32 cur3, cur7, cur8; cur3 = nv_rd32(pfb, 0x10022c); @@ -364,10 +364,11 @@ nva3_ram_timing_calc(struct nouveau_fb *pfb, u32 *timing) cur8 = nv_rd32(pfb, 0x100240); if (T(CWL) == 0) - T(CWL) = ((nv_rd32(pfb, 0x100228) & 0x0f000000) >> 24) + 1; + /* Observed on DDR2 */ + T(CWL) = T(CL) - 1; - tUNK_base = ((cur7 & 0x00ff0000) >> 16) - - (cur3 & 0x000000ff) - 1; + prevCL = (cur3 & 0x000000ff) + 1; + tUNK_base = ((cur7 & 0x00ff0000) >> 16) - prevCL; timing[0] = (T(RP) << 24 | T(RAS) << 16 | T(RFC) << 8 | T(RC)); timing[1] = (T(WR) + 1 + T(CWL)) << 24 | @@ -398,6 +399,16 @@ nva3_ram_timing_calc(struct nouveau_fb *pfb, u32 *timing) 0x202; timing[8] = cur8 & 0xffffff00; + switch (ram->base.type) { + case NV_MEM_TYPE_DDR2: + tUNK_40_0 = prevCL - (cur8 & 0xff); + if (tUNK_40_0 > 0) + timing[8] |= T(CL); + break; + default: + break; + } + nv_debug(pfb, "Entry: 220: %08x %08x %08x %08x\n", timing[0], timing[1], timing[2], timing[3]); nv_debug(pfb, " 230: %08x %08x %08x %08x\n", @@ -408,7 +419,7 @@ nva3_ram_timing_calc(struct nouveau_fb *pfb, u32 *timing) #undef T static void -nouveau_sddr3_dll_reset(struct nva3_ramfuc *fuc) +nouveau_sddr2_dll_reset(struct nva3_ramfuc *fuc) { ram_mask(fuc, mr[0], 0x100, 0x100); ram_nsec(fuc, 1000); @@ -514,6 +525,9 @@ nva3_ram_calc(struct nouveau_fb *pfb, u32 freq) ram->base.mr[2] = ram_rd32(fuc, mr[2]); switch (ram->base.type) { + case NV_MEM_TYPE_DDR2: + ret = nouveau_sddr2_calc(&ram->base); + break; case NV_MEM_TYPE_DDR3: ret = nouveau_sddr3_calc(&ram->base); break; @@ -573,8 +587,11 @@ nva3_ram_calc(struct nouveau_fb *pfb, u32 freq) ram_mask(fuc, 0x111100, 0x04020000, 0x04020000); /*XXX*/ /* If we're disabling the DLL, do it now */ - if (next->bios.ramcfg_10_DLLoff) + switch (next->bios.ramcfg_10_DLLoff * ram->base.type) { + case NV_MEM_TYPE_DDR3: nouveau_sddr3_dll_disable(fuc, ram->base.mr); + break; + } /* Brace RAM for impact */ ram_wr32(fuc, 0x1002d4, 0x00000001); @@ -658,12 +675,12 @@ nva3_ram_calc(struct nouveau_fb *pfb, u32 freq) ram_nsec(fuc, 2000); /* Set RAM MR parameters and timings */ - ram_wr32(fuc, mr[2], ram->base.mr[2]); - ram_nsec(fuc, 1000); - ram_wr32(fuc, mr[1], ram->base.mr[1]); - ram_nsec(fuc, 1000); - ram_wr32(fuc, mr[0], ram->base.mr[0]); - ram_nsec(fuc, 1000); + for (i = 2; i >= 0; i--) { + if (ram_rd32(fuc, mr[i]) != ram->base.mr[i]) { + ram_wr32(fuc, mr[i], ram->base.mr[i]); + ram_nsec(fuc, 1000); + } + } ram_wr32(fuc, 0x100220[3], timing[3]); ram_wr32(fuc, 0x100220[1], timing[1]); @@ -690,11 +707,18 @@ nva3_ram_calc(struct nouveau_fb *pfb, u32 freq) if (nv_device(pfb)->chipset != 0xa8) r111100 |= 0x00000004; /* no break */ + case NV_MEM_TYPE_DDR2: + r111100 |= 0x08000000; + break; default: break; } } else { switch (ram->base.type) { + case NV_MEM_TYPE_DDR2: + r111100 |= 0x1a800000; + unk714 |= 0x00000010; + break; case NV_MEM_TYPE_DDR3: if (nv_device(pfb)->chipset == 0xa8) { r111100 |= 0x08000000; @@ -731,12 +755,14 @@ nva3_ram_calc(struct nouveau_fb *pfb, u32 freq) /* Reset DLL */ if (!next->bios.ramcfg_10_DLLoff) - nouveau_sddr3_dll_reset(fuc); + nouveau_sddr2_dll_reset(fuc); ram_nsec(fuc, 14000); - ram_wr32(fuc, 0x100264, 0x1); - ram_nsec(fuc, 2000); + if (ram->base.type == NV_MEM_TYPE_DDR3) { + ram_wr32(fuc, 0x100264, 0x1); + ram_nsec(fuc, 2000); + } ram_nuke(fuc, 0x100700); ram_mask(fuc, 0x100700, 0x01000000, 0x01000000); @@ -842,6 +868,7 @@ nva3_ram_ctor(struct nouveau_object *parent, struct nouveau_object *engine, return ret; switch (ram->base.type) { + case NV_MEM_TYPE_DDR2: case NV_MEM_TYPE_DDR3: ram->base.calc = nva3_ram_calc; ram->base.prog = nva3_ram_prog; -- 2.34.1