diff options
Diffstat (limited to 'nvkm/subdev/clock/nva3.c')
-rw-r--r-- | nvkm/subdev/clock/nva3.c | 534 |
1 files changed, 0 insertions, 534 deletions
diff --git a/nvkm/subdev/clock/nva3.c b/nvkm/subdev/clock/nva3.c deleted file mode 100644 index 07ad01247..000000000 --- a/nvkm/subdev/clock/nva3.c +++ /dev/null @@ -1,534 +0,0 @@ -/* - * Copyright 2012 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 - * Roy Spliet - */ - -#include <engine/fifo.h> -#include <subdev/bios.h> -#include <subdev/bios/pll.h> -#include <subdev/timer.h> - -#include "pll.h" - -#include "nva3.h" - -struct nva3_clock_priv { - struct nouveau_clock base; - struct nva3_clock_info eng[nv_clk_src_max]; -}; - -static u32 read_clk(struct nva3_clock_priv *, int, bool); -static u32 read_pll(struct nva3_clock_priv *, int, u32); - -static u32 -read_vco(struct nva3_clock_priv *priv, int clk) -{ - u32 sctl = nv_rd32(priv, 0x4120 + (clk * 4)); - - switch (sctl & 0x00000030) { - case 0x00000000: - return nv_device(priv)->crystal; - case 0x00000020: - return read_pll(priv, 0x41, 0x00e820); - case 0x00000030: - return read_pll(priv, 0x42, 0x00e8a0); - default: - return 0; - } -} - -static u32 -read_clk(struct nva3_clock_priv *priv, int clk, bool ignore_en) -{ - u32 sctl, sdiv, sclk; - - /* refclk for the 0xe8xx plls is a fixed frequency */ - if (clk >= 0x40) { - if (nv_device(priv)->chipset == 0xaf) { - /* no joke.. seriously.. sigh.. */ - return nv_rd32(priv, 0x00471c) * 1000; - } - - return nv_device(priv)->crystal; - } - - sctl = nv_rd32(priv, 0x4120 + (clk * 4)); - if (!ignore_en && !(sctl & 0x00000100)) - return 0; - - /* out_alt */ - if (sctl & 0x00000400) - return 108000; - - /* vco_out */ - switch (sctl & 0x00003000) { - case 0x00000000: - if (!(sctl & 0x00000200)) - return nv_device(priv)->crystal; - return 0; - case 0x00002000: - if (sctl & 0x00000040) - return 108000; - return 100000; - case 0x00003000: - /* vco_enable */ - if (!(sctl & 0x00000001)) - return 0; - - sclk = read_vco(priv, clk); - sdiv = ((sctl & 0x003f0000) >> 16) + 2; - return (sclk * 2) / sdiv; - default: - return 0; - } -} - -static u32 -read_pll(struct nva3_clock_priv *priv, int clk, u32 pll) -{ - u32 ctrl = nv_rd32(priv, pll + 0); - u32 sclk = 0, P = 1, N = 1, M = 1; - - if (!(ctrl & 0x00000008)) { - if (ctrl & 0x00000001) { - u32 coef = nv_rd32(priv, pll + 4); - M = (coef & 0x000000ff) >> 0; - N = (coef & 0x0000ff00) >> 8; - P = (coef & 0x003f0000) >> 16; - - /* no post-divider on these.. - * XXX: it looks more like two post-"dividers" that - * cross each other out in the default RPLL config */ - if ((pll & 0x00ff00) == 0x00e800) - P = 1; - - sclk = read_clk(priv, 0x00 + clk, false); - } - } else { - sclk = read_clk(priv, 0x10 + clk, false); - } - - if (M * P) - return sclk * N / (M * P); - return 0; -} - -static int -nva3_clock_read(struct nouveau_clock *clk, enum nv_clk_src src) -{ - struct nva3_clock_priv *priv = (void *)clk; - u32 hsrc; - - switch (src) { - case nv_clk_src_crystal: - return nv_device(priv)->crystal; - case nv_clk_src_core: - case nv_clk_src_core_intm: - return read_pll(priv, 0x00, 0x4200); - case nv_clk_src_shader: - return read_pll(priv, 0x01, 0x4220); - case nv_clk_src_mem: - return read_pll(priv, 0x02, 0x4000); - case nv_clk_src_disp: - return read_clk(priv, 0x20, false); - case nv_clk_src_vdec: - return read_clk(priv, 0x21, false); - case nv_clk_src_daemon: - return read_clk(priv, 0x25, false); - case nv_clk_src_host: - hsrc = (nv_rd32(priv, 0xc040) & 0x30000000) >> 28; - switch (hsrc) { - case 0: - return read_clk(priv, 0x1d, false); - case 2: - case 3: - return 277000; - default: - nv_error(clk, "unknown HOST clock source %d\n", hsrc); - return -EINVAL; - } - default: - nv_error(clk, "invalid clock source %d\n", src); - return -EINVAL; - } - - return 0; -} - -int -nva3_clk_info(struct nouveau_clock *clock, int clk, u32 khz, - struct nva3_clock_info *info) -{ - struct nva3_clock_priv *priv = (void *)clock; - u32 oclk, sclk, sdiv, diff; - - info->clk = 0; - - switch (khz) { - case 27000: - info->clk = 0x00000100; - return khz; - case 100000: - info->clk = 0x00002100; - return khz; - case 108000: - info->clk = 0x00002140; - return khz; - default: - sclk = read_vco(priv, clk); - sdiv = min((sclk * 2) / khz, (u32)65); - oclk = (sclk * 2) / sdiv; - diff = ((khz + 3000) - oclk); - - /* When imprecise, play it safe and aim for a clock lower than - * desired rather than higher */ - if (diff < 0) { - sdiv++; - oclk = (sclk * 2) / sdiv; - } - - /* divider can go as low as 2, limited here because NVIDIA - * and the VBIOS on my NVA8 seem to prefer using the PLL - * for 810MHz - is there a good reason? - * XXX: PLLs with refclk 810MHz? */ - if (sdiv > 4) { - info->clk = (((sdiv - 2) << 16) | 0x00003100); - return oclk; - } - - break; - } - - return -ERANGE; -} - -int -nva3_pll_info(struct nouveau_clock *clock, int clk, u32 pll, u32 khz, - struct nva3_clock_info *info) -{ - struct nouveau_bios *bios = nouveau_bios(clock); - struct nva3_clock_priv *priv = (void *)clock; - struct nvbios_pll limits; - int P, N, M, diff; - int ret; - - info->pll = 0; - - /* If we can get a within [-2, 3) MHz of a divider, we'll disable the - * PLL and use the divider instead. */ - ret = nva3_clk_info(clock, clk, khz, info); - diff = khz - ret; - if (!pll || (diff >= -2000 && diff < 3000)) { - goto out; - } - - /* Try with PLL */ - ret = nvbios_pll_parse(bios, pll, &limits); - if (ret) - return ret; - - ret = nva3_clk_info(clock, clk - 0x10, limits.refclk, info); - if (ret != limits.refclk) - return -EINVAL; - - ret = nva3_pll_calc(nv_subdev(priv), &limits, khz, &N, NULL, &M, &P); - if (ret >= 0) { - info->pll = (P << 16) | (N << 8) | M; - } - -out: - info->fb_delay = max(((khz + 7566) / 15133), (u32) 18); - - return ret ? ret : -ERANGE; -} - -static int -calc_clk(struct nva3_clock_priv *priv, struct nouveau_cstate *cstate, - int clk, u32 pll, int idx) -{ - int ret = nva3_pll_info(&priv->base, clk, pll, cstate->domain[idx], - &priv->eng[idx]); - if (ret >= 0) - return 0; - return ret; -} - -static int -calc_host(struct nva3_clock_priv *priv, struct nouveau_cstate *cstate) -{ - int ret = 0; - u32 kHz = cstate->domain[nv_clk_src_host]; - struct nva3_clock_info *info = &priv->eng[nv_clk_src_host]; - - if (kHz == 277000) { - info->clk = 0; - info->host_out = NVA3_HOST_277; - return 0; - } - - info->host_out = NVA3_HOST_CLK; - - ret = nva3_clk_info(&priv->base, 0x1d, kHz, info); - if (ret >= 0) - return 0; - return ret; -} - -int -nva3_clock_pre(struct nouveau_clock *clk, unsigned long *flags) -{ - struct nouveau_fifo *pfifo = nouveau_fifo(clk); - - /* halt and idle execution engines */ - nv_mask(clk, 0x020060, 0x00070000, 0x00000000); - nv_mask(clk, 0x002504, 0x00000001, 0x00000001); - /* Wait until the interrupt handler is finished */ - if (!nv_wait(clk, 0x000100, 0xffffffff, 0x00000000)) - return -EBUSY; - - if (pfifo) - pfifo->pause(pfifo, flags); - - if (!nv_wait(clk, 0x002504, 0x00000010, 0x00000010)) - return -EIO; - if (!nv_wait(clk, 0x00251c, 0x0000003f, 0x0000003f)) - return -EIO; - - return 0; -} - -void -nva3_clock_post(struct nouveau_clock *clk, unsigned long *flags) -{ - struct nouveau_fifo *pfifo = nouveau_fifo(clk); - - if (pfifo && flags) - pfifo->start(pfifo, flags); - - nv_mask(clk, 0x002504, 0x00000001, 0x00000000); - nv_mask(clk, 0x020060, 0x00070000, 0x00040000); -} - -static void -disable_clk_src(struct nva3_clock_priv *priv, u32 src) -{ - nv_mask(priv, src, 0x00000100, 0x00000000); - nv_mask(priv, src, 0x00000001, 0x00000000); -} - -static void -prog_pll(struct nva3_clock_priv *priv, int clk, u32 pll, int idx) -{ - struct nva3_clock_info *info = &priv->eng[idx]; - const u32 src0 = 0x004120 + (clk * 4); - const u32 src1 = 0x004160 + (clk * 4); - const u32 ctrl = pll + 0; - const u32 coef = pll + 4; - u32 bypass; - - if (info->pll) { - /* Always start from a non-PLL clock */ - bypass = nv_rd32(priv, ctrl) & 0x00000008; - if (!bypass) { - nv_mask(priv, src1, 0x00000101, 0x00000101); - nv_mask(priv, ctrl, 0x00000008, 0x00000008); - udelay(20); - } - - nv_mask(priv, src0, 0x003f3141, 0x00000101 | info->clk); - nv_wr32(priv, coef, info->pll); - nv_mask(priv, ctrl, 0x00000015, 0x00000015); - nv_mask(priv, ctrl, 0x00000010, 0x00000000); - if (!nv_wait(priv, ctrl, 0x00020000, 0x00020000)) { - nv_mask(priv, ctrl, 0x00000010, 0x00000010); - nv_mask(priv, src0, 0x00000101, 0x00000000); - return; - } - nv_mask(priv, ctrl, 0x00000010, 0x00000010); - nv_mask(priv, ctrl, 0x00000008, 0x00000000); - disable_clk_src(priv, src1); - } else { - nv_mask(priv, src1, 0x003f3141, 0x00000101 | info->clk); - nv_mask(priv, ctrl, 0x00000018, 0x00000018); - udelay(20); - nv_mask(priv, ctrl, 0x00000001, 0x00000000); - disable_clk_src(priv, src0); - } -} - -static void -prog_clk(struct nva3_clock_priv *priv, int clk, int idx) -{ - struct nva3_clock_info *info = &priv->eng[idx]; - nv_mask(priv, 0x004120 + (clk * 4), 0x003f3141, 0x00000101 | info->clk); -} - -static void -prog_host(struct nva3_clock_priv *priv) -{ - struct nva3_clock_info *info = &priv->eng[nv_clk_src_host]; - u32 hsrc = (nv_rd32(priv, 0xc040)); - - switch (info->host_out) { - case NVA3_HOST_277: - if ((hsrc & 0x30000000) == 0) { - nv_wr32(priv, 0xc040, hsrc | 0x20000000); - disable_clk_src(priv, 0x4194); - } - break; - case NVA3_HOST_CLK: - prog_clk(priv, 0x1d, nv_clk_src_host); - if ((hsrc & 0x30000000) >= 0x20000000) { - nv_wr32(priv, 0xc040, hsrc & ~0x30000000); - } - break; - default: - break; - } - - /* This seems to be a clock gating factor on idle, always set to 64 */ - nv_wr32(priv, 0xc044, 0x3e); -} - -static void -prog_core(struct nva3_clock_priv *priv, int idx) -{ - struct nva3_clock_info *info = &priv->eng[idx]; - u32 fb_delay = nv_rd32(priv, 0x10002c); - - if (fb_delay < info->fb_delay) - nv_wr32(priv, 0x10002c, info->fb_delay); - - prog_pll(priv, 0x00, 0x004200, idx); - - if (fb_delay > info->fb_delay) - nv_wr32(priv, 0x10002c, info->fb_delay); -} - -static int -nva3_clock_calc(struct nouveau_clock *clk, struct nouveau_cstate *cstate) -{ - struct nva3_clock_priv *priv = (void *)clk; - struct nva3_clock_info *core = &priv->eng[nv_clk_src_core]; - int ret; - - if ((ret = calc_clk(priv, cstate, 0x10, 0x4200, nv_clk_src_core)) || - (ret = calc_clk(priv, cstate, 0x11, 0x4220, nv_clk_src_shader)) || - (ret = calc_clk(priv, cstate, 0x20, 0x0000, nv_clk_src_disp)) || - (ret = calc_clk(priv, cstate, 0x21, 0x0000, nv_clk_src_vdec)) || - (ret = calc_host(priv, cstate))) - return ret; - - /* XXX: Should be reading the highest bit in the VBIOS clock to decide - * whether to use a PLL or not... but using a PLL defeats the purpose */ - if (core->pll) { - ret = nva3_clk_info(clk, 0x10, - cstate->domain[nv_clk_src_core_intm], - &priv->eng[nv_clk_src_core_intm]); - if (ret < 0) - return ret; - } - - return 0; -} - -static int -nva3_clock_prog(struct nouveau_clock *clk) -{ - struct nva3_clock_priv *priv = (void *)clk; - struct nva3_clock_info *core = &priv->eng[nv_clk_src_core]; - int ret = 0; - unsigned long flags; - unsigned long *f = &flags; - - ret = nva3_clock_pre(clk, f); - if (ret) - goto out; - - if (core->pll) - prog_core(priv, nv_clk_src_core_intm); - - prog_core(priv, nv_clk_src_core); - prog_pll(priv, 0x01, 0x004220, nv_clk_src_shader); - prog_clk(priv, 0x20, nv_clk_src_disp); - prog_clk(priv, 0x21, nv_clk_src_vdec); - prog_host(priv); - -out: - if (ret == -EBUSY) - f = NULL; - - nva3_clock_post(clk, f); - - return ret; -} - -static void -nva3_clock_tidy(struct nouveau_clock *clk) -{ -} - -static struct nouveau_clocks -nva3_domain[] = { - { nv_clk_src_crystal , 0xff }, - { nv_clk_src_core , 0x00, 0, "core", 1000 }, - { nv_clk_src_shader , 0x01, 0, "shader", 1000 }, - { nv_clk_src_mem , 0x02, 0, "memory", 1000 }, - { nv_clk_src_vdec , 0x03 }, - { nv_clk_src_disp , 0x04 }, - { nv_clk_src_host , 0x05 }, - { nv_clk_src_core_intm, 0x06 }, - { nv_clk_src_max } -}; - -static int -nva3_clock_ctor(struct nouveau_object *parent, struct nouveau_object *engine, - struct nouveau_oclass *oclass, void *data, u32 size, - struct nouveau_object **pobject) -{ - struct nva3_clock_priv *priv; - int ret; - - ret = nouveau_clock_create(parent, engine, oclass, nva3_domain, NULL, 0, - true, &priv); - *pobject = nv_object(priv); - if (ret) - return ret; - - priv->base.read = nva3_clock_read; - priv->base.calc = nva3_clock_calc; - priv->base.prog = nva3_clock_prog; - priv->base.tidy = nva3_clock_tidy; - return 0; -} - -struct nouveau_oclass -nva3_clock_oclass = { - .handle = NV_SUBDEV(CLOCK, 0xa3), - .ofuncs = &(struct nouveau_ofuncs) { - .ctor = nva3_clock_ctor, - .dtor = _nouveau_clock_dtor, - .init = _nouveau_clock_init, - .fini = _nouveau_clock_fini, - }, -}; |