From 46bf1c389f7fb4f3d1bba1543088d66523670cac Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Tue, 3 Dec 2013 08:51:59 +1000 Subject: [PATCH] drm/nve0/fb: multi-stage reclock is required for certain transitions Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/core/include/subdev/fb.h | 3 + drivers/gpu/drm/nouveau/core/subdev/fb/ramnve0.c | 83 +++++++++++++++++++----- 2 files changed, 70 insertions(+), 16 deletions(-) diff --git a/drivers/gpu/drm/nouveau/core/include/subdev/fb.h b/drivers/gpu/drm/nouveau/core/include/subdev/fb.h index 5ac84e9..d7ecafb 100644 --- a/drivers/gpu/drm/nouveau/core/include/subdev/fb.h +++ b/drivers/gpu/drm/nouveau/core/include/subdev/fb.h @@ -110,6 +110,7 @@ extern struct nouveau_oclass *nve0_fb_oclass; struct nouveau_ram_data { struct nvbios_ramcfg bios; + u32 freq; }; struct nouveau_ram { @@ -151,6 +152,8 @@ struct nouveau_ram { u32 mr1_nuts; struct nouveau_ram_data *next; + struct nouveau_ram_data former; + struct nouveau_ram_data xition; struct nouveau_ram_data target; }; diff --git a/drivers/gpu/drm/nouveau/core/subdev/fb/ramnve0.c b/drivers/gpu/drm/nouveau/core/subdev/fb/ramnve0.c index 8820cc1..8b3e528 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/fb/ramnve0.c +++ b/drivers/gpu/drm/nouveau/core/subdev/fb/ramnve0.c @@ -914,20 +914,18 @@ nve0_ram_calc_sddr3(struct nouveau_fb *pfb, u32 freq) ******************************************************************************/ static int -nve0_ram_calc(struct nouveau_fb *pfb, u32 freq) +nve0_ram_calc_data(struct nouveau_fb *pfb, u32 freq, + struct nouveau_ram_data *data) { struct nouveau_bios *bios = nouveau_bios(pfb); struct nve0_ram *ram = (void *)pfb->ram; - struct nve0_ramfuc *fuc = &ram->fuc; - int ret, refclk, strap, i; - u8 cnt, len; + u8 strap, cnt, len; /* lookup memory config data relevant to the target frequency */ ram->base.rammap.data = nvbios_rammapEp(bios, freq / 1000, &ram->base.rammap.version, &ram->base.rammap.size, - &cnt, &len, - &ram->base.target.bios); + &cnt, &len, &data->bios); if (!ram->base.rammap.data || ram->base.rammap.version != 0x11 || ram->base.rammap.size < 0x09) { nv_error(pfb, "invalid/missing rammap entry\n"); @@ -941,7 +939,7 @@ nve0_ram_calc(struct nouveau_fb *pfb, u32 freq) nvbios_ramcfg_index(bios), &ram->base.ramcfg.version, &ram->base.ramcfg.size, - &ram->base.target.bios); + &data->bios); if (!ram->base.ramcfg.data || ram->base.ramcfg.version != 0x11 || ram->base.ramcfg.size < 0x08) { nv_error(pfb, "invalid/missing ramcfg entry\n"); @@ -954,7 +952,7 @@ nve0_ram_calc(struct nouveau_fb *pfb, u32 freq) ram->base.timing.data = nvbios_timingEp(bios, strap, &ram->base.timing.version, &ram->base.timing.size, &cnt, &len, - &ram->base.target.bios); + &data->bios); if (!ram->base.timing.data || ram->base.timing.version != 0x20 || ram->base.timing.size < 0x33) { @@ -965,13 +963,23 @@ nve0_ram_calc(struct nouveau_fb *pfb, u32 freq) ram->base.timing.data = 0; } - ram->base.next = &ram->base.target; + data->freq = freq; + return 0; +} + +static int +nve0_ram_calc_xits(struct nouveau_fb *pfb, struct nouveau_ram_data *next) +{ + struct nve0_ram *ram = (void *)pfb->ram; + struct nve0_ramfuc *fuc = &ram->fuc; + int refclk, i; + int ret; ret = ram_init(fuc, pfb); if (ret) return ret; - ram->mode = (freq > fuc->refpll.vco1.max_freq) ? 2 : 1; + ram->mode = (next->freq > fuc->refpll.vco1.max_freq) ? 2 : 1; ram->from = ram_rd32(fuc, 0x1373f4) & 0x0000000f; /* XXX: this is *not* what nvidia do. on fermi nvidia generally @@ -982,7 +990,7 @@ nve0_ram_calc(struct nouveau_fb *pfb, u32 freq) * so far, i've seen very weird values being chosen by nvidia on * kepler boards, no idea how/why they're chosen. */ - refclk = freq; + refclk = next->freq; if (ram->mode == 2) refclk = fuc->mempll.refclk; @@ -1004,7 +1012,7 @@ nve0_ram_calc(struct nouveau_fb *pfb, u32 freq) fuc->mempll.min_p = 1; fuc->mempll.max_p = 2; - ret = nva3_pll_calc(nv_subdev(pfb), &fuc->mempll, freq, + ret = nva3_pll_calc(nv_subdev(pfb), &fuc->mempll, next->freq, &ram->N2, NULL, &ram->M2, &ram->P2); if (ret <= 0) { nv_error(pfb, "unable to calc mempll\n"); @@ -1016,18 +1024,18 @@ nve0_ram_calc(struct nouveau_fb *pfb, u32 freq) if (ram_have(fuc, mr[i])) ram->base.mr[i] = ram_rd32(fuc, mr[i]); } - ram->base.freq = freq; + ram->base.freq = next->freq; switch (ram->base.type) { case NV_MEM_TYPE_DDR3: ret = nouveau_sddr3_calc(&ram->base); if (ret == 0) - ret = nve0_ram_calc_sddr3(pfb, freq); + ret = nve0_ram_calc_sddr3(pfb, next->freq); break; case NV_MEM_TYPE_GDDR5: ret = nouveau_gddr5_calc(&ram->base, ram->pnuts != 0); if (ret == 0) - ret = nve0_ram_calc_gddr5(pfb, freq); + ret = nve0_ram_calc_gddr5(pfb, next->freq); break; default: ret = -ENOSYS; @@ -1038,13 +1046,55 @@ nve0_ram_calc(struct nouveau_fb *pfb, u32 freq) } static int +nve0_ram_calc(struct nouveau_fb *pfb, u32 freq) +{ + struct nouveau_clock *clk = nouveau_clock(pfb); + struct nve0_ram *ram = (void *)pfb->ram; + struct nouveau_ram_data *xits = &ram->base.xition; + struct nouveau_ram_data *copy; + int ret; + + if (ram->base.next == NULL) { + ret = nve0_ram_calc_data(pfb, clk->read(clk, nv_clk_src_mem), + &ram->base.former); + if (ret) + return ret; + + ret = nve0_ram_calc_data(pfb, freq, &ram->base.target); + if (ret) + return ret; + + if (ram->base.target.freq < ram->base.former.freq) { + *xits = ram->base.target; + copy = &ram->base.former; + } else { + *xits = ram->base.former; + copy = &ram->base.target; + } + + xits->bios.ramcfg_11_02_04 = copy->bios.ramcfg_11_02_04; + xits->bios.ramcfg_11_02_03 = copy->bios.ramcfg_11_02_03; + xits->bios.timing_20_30_07 = copy->bios.timing_20_30_07; + + ram->base.next = &ram->base.target; + if (memcmp(xits, &ram->base.former, sizeof(xits->bios))) + ram->base.next = &ram->base.xition; + } else { + BUG_ON(ram->base.next != &ram->base.xition); + ram->base.next = &ram->base.target; + } + + return nve0_ram_calc_xits(pfb, ram->base.next); +} + +static int nve0_ram_prog(struct nouveau_fb *pfb) { struct nouveau_device *device = nv_device(pfb); struct nve0_ram *ram = (void *)pfb->ram; struct nve0_ramfuc *fuc = &ram->fuc; ram_exec(fuc, nouveau_boolopt(device->cfgopt, "NvMemExec", false)); - return 0; + return (ram->base.next == &ram->base.xition); } static void @@ -1052,6 +1102,7 @@ nve0_ram_tidy(struct nouveau_fb *pfb) { struct nve0_ram *ram = (void *)pfb->ram; struct nve0_ramfuc *fuc = &ram->fuc; + ram->base.next = NULL; ram_exec(fuc, false); } -- 2.7.4