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path: root/drivers/gpu/drm/nouveau/nv50_pm.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nv50_pm.c')
-rw-r--r--drivers/gpu/drm/nouveau/nv50_pm.c855
1 files changed, 0 insertions, 855 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_pm.c b/drivers/gpu/drm/nouveau/nv50_pm.c
deleted file mode 100644
index 4efc33fa73fc..000000000000
--- a/drivers/gpu/drm/nouveau/nv50_pm.c
+++ /dev/null
@@ -1,855 +0,0 @@
-/*
- * Copyright 2010 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
- */
-
-#include <drm/drmP.h>
-#include "nouveau_drm.h"
-#include "nouveau_bios.h"
-#include "dispnv04/hw.h"
-#include "nouveau_pm.h"
-#include "nouveau_hwsq.h"
-
-#include "nv50_display.h"
-
-#include <subdev/bios/pll.h>
-#include <subdev/clock.h>
-#include <subdev/timer.h>
-#include <subdev/fb.h>
-
-enum clk_src {
- clk_src_crystal,
- clk_src_href,
- clk_src_hclk,
- clk_src_hclkm3,
- clk_src_hclkm3d2,
- clk_src_host,
- clk_src_nvclk,
- clk_src_sclk,
- clk_src_mclk,
- clk_src_vdec,
- clk_src_dom6
-};
-
-static u32 read_clk(struct drm_device *, enum clk_src);
-
-static u32
-read_div(struct drm_device *dev)
-{
- struct nouveau_device *device = nouveau_dev(dev);
- struct nouveau_drm *drm = nouveau_drm(dev);
-
- switch (nv_device(drm->device)->chipset) {
- case 0x50: /* it exists, but only has bit 31, not the dividers.. */
- case 0x84:
- case 0x86:
- case 0x98:
- case 0xa0:
- return nv_rd32(device, 0x004700);
- case 0x92:
- case 0x94:
- case 0x96:
- return nv_rd32(device, 0x004800);
- default:
- return 0x00000000;
- }
-}
-
-static u32
-read_pll_src(struct drm_device *dev, u32 base)
-{
- struct nouveau_device *device = nouveau_dev(dev);
- struct nouveau_drm *drm = nouveau_drm(dev);
- u32 coef, ref = read_clk(dev, clk_src_crystal);
- u32 rsel = nv_rd32(device, 0x00e18c);
- int P, N, M, id;
-
- switch (nv_device(drm->device)->chipset) {
- case 0x50:
- case 0xa0:
- switch (base) {
- case 0x4020:
- case 0x4028: id = !!(rsel & 0x00000004); break;
- case 0x4008: id = !!(rsel & 0x00000008); break;
- case 0x4030: id = 0; break;
- default:
- NV_ERROR(drm, "ref: bad pll 0x%06x\n", base);
- return 0;
- }
-
- coef = nv_rd32(device, 0x00e81c + (id * 0x0c));
- ref *= (coef & 0x01000000) ? 2 : 4;
- P = (coef & 0x00070000) >> 16;
- N = ((coef & 0x0000ff00) >> 8) + 1;
- M = ((coef & 0x000000ff) >> 0) + 1;
- break;
- case 0x84:
- case 0x86:
- case 0x92:
- coef = nv_rd32(device, 0x00e81c);
- P = (coef & 0x00070000) >> 16;
- N = (coef & 0x0000ff00) >> 8;
- M = (coef & 0x000000ff) >> 0;
- break;
- case 0x94:
- case 0x96:
- case 0x98:
- rsel = nv_rd32(device, 0x00c050);
- switch (base) {
- case 0x4020: rsel = (rsel & 0x00000003) >> 0; break;
- case 0x4008: rsel = (rsel & 0x0000000c) >> 2; break;
- case 0x4028: rsel = (rsel & 0x00001800) >> 11; break;
- case 0x4030: rsel = 3; break;
- default:
- NV_ERROR(drm, "ref: bad pll 0x%06x\n", base);
- return 0;
- }
-
- switch (rsel) {
- case 0: id = 1; break;
- case 1: return read_clk(dev, clk_src_crystal);
- case 2: return read_clk(dev, clk_src_href);
- case 3: id = 0; break;
- }
-
- coef = nv_rd32(device, 0x00e81c + (id * 0x28));
- P = (nv_rd32(device, 0x00e824 + (id * 0x28)) >> 16) & 7;
- P += (coef & 0x00070000) >> 16;
- N = (coef & 0x0000ff00) >> 8;
- M = (coef & 0x000000ff) >> 0;
- break;
- default:
- BUG_ON(1);
- }
-
- if (M)
- return (ref * N / M) >> P;
- return 0;
-}
-
-static u32
-read_pll_ref(struct drm_device *dev, u32 base)
-{
- struct nouveau_device *device = nouveau_dev(dev);
- struct nouveau_drm *drm = nouveau_drm(dev);
- u32 src, mast = nv_rd32(device, 0x00c040);
-
- switch (base) {
- case 0x004028:
- src = !!(mast & 0x00200000);
- break;
- case 0x004020:
- src = !!(mast & 0x00400000);
- break;
- case 0x004008:
- src = !!(mast & 0x00010000);
- break;
- case 0x004030:
- src = !!(mast & 0x02000000);
- break;
- case 0x00e810:
- return read_clk(dev, clk_src_crystal);
- default:
- NV_ERROR(drm, "bad pll 0x%06x\n", base);
- return 0;
- }
-
- if (src)
- return read_clk(dev, clk_src_href);
- return read_pll_src(dev, base);
-}
-
-static u32
-read_pll(struct drm_device *dev, u32 base)
-{
- struct nouveau_device *device = nouveau_dev(dev);
- struct nouveau_drm *drm = nouveau_drm(dev);
- u32 mast = nv_rd32(device, 0x00c040);
- u32 ctrl = nv_rd32(device, base + 0);
- u32 coef = nv_rd32(device, base + 4);
- u32 ref = read_pll_ref(dev, base);
- u32 clk = 0;
- int N1, N2, M1, M2;
-
- if (base == 0x004028 && (mast & 0x00100000)) {
- /* wtf, appears to only disable post-divider on nva0 */
- if (nv_device(drm->device)->chipset != 0xa0)
- return read_clk(dev, clk_src_dom6);
- }
-
- N2 = (coef & 0xff000000) >> 24;
- M2 = (coef & 0x00ff0000) >> 16;
- N1 = (coef & 0x0000ff00) >> 8;
- M1 = (coef & 0x000000ff);
- if ((ctrl & 0x80000000) && M1) {
- clk = ref * N1 / M1;
- if ((ctrl & 0x40000100) == 0x40000000) {
- if (M2)
- clk = clk * N2 / M2;
- else
- clk = 0;
- }
- }
-
- return clk;
-}
-
-static u32
-read_clk(struct drm_device *dev, enum clk_src src)
-{
- struct nouveau_device *device = nouveau_dev(dev);
- struct nouveau_drm *drm = nouveau_drm(dev);
- u32 mast = nv_rd32(device, 0x00c040);
- u32 P = 0;
-
- switch (src) {
- case clk_src_crystal:
- return device->crystal;
- case clk_src_href:
- return 100000; /* PCIE reference clock */
- case clk_src_hclk:
- return read_clk(dev, clk_src_href) * 27778 / 10000;
- case clk_src_hclkm3:
- return read_clk(dev, clk_src_hclk) * 3;
- case clk_src_hclkm3d2:
- return read_clk(dev, clk_src_hclk) * 3 / 2;
- case clk_src_host:
- switch (mast & 0x30000000) {
- case 0x00000000: return read_clk(dev, clk_src_href);
- case 0x10000000: break;
- case 0x20000000: /* !0x50 */
- case 0x30000000: return read_clk(dev, clk_src_hclk);
- }
- break;
- case clk_src_nvclk:
- if (!(mast & 0x00100000))
- P = (nv_rd32(device, 0x004028) & 0x00070000) >> 16;
- switch (mast & 0x00000003) {
- case 0x00000000: return read_clk(dev, clk_src_crystal) >> P;
- case 0x00000001: return read_clk(dev, clk_src_dom6);
- case 0x00000002: return read_pll(dev, 0x004020) >> P;
- case 0x00000003: return read_pll(dev, 0x004028) >> P;
- }
- break;
- case clk_src_sclk:
- P = (nv_rd32(device, 0x004020) & 0x00070000) >> 16;
- switch (mast & 0x00000030) {
- case 0x00000000:
- if (mast & 0x00000080)
- return read_clk(dev, clk_src_host) >> P;
- return read_clk(dev, clk_src_crystal) >> P;
- case 0x00000010: break;
- case 0x00000020: return read_pll(dev, 0x004028) >> P;
- case 0x00000030: return read_pll(dev, 0x004020) >> P;
- }
- break;
- case clk_src_mclk:
- P = (nv_rd32(device, 0x004008) & 0x00070000) >> 16;
- if (nv_rd32(device, 0x004008) & 0x00000200) {
- switch (mast & 0x0000c000) {
- case 0x00000000:
- return read_clk(dev, clk_src_crystal) >> P;
- case 0x00008000:
- case 0x0000c000:
- return read_clk(dev, clk_src_href) >> P;
- }
- } else {
- return read_pll(dev, 0x004008) >> P;
- }
- break;
- case clk_src_vdec:
- P = (read_div(dev) & 0x00000700) >> 8;
- switch (nv_device(drm->device)->chipset) {
- case 0x84:
- case 0x86:
- case 0x92:
- case 0x94:
- case 0x96:
- case 0xa0:
- switch (mast & 0x00000c00) {
- case 0x00000000:
- if (nv_device(drm->device)->chipset == 0xa0) /* wtf?? */
- return read_clk(dev, clk_src_nvclk) >> P;
- return read_clk(dev, clk_src_crystal) >> P;
- case 0x00000400:
- return 0;
- case 0x00000800:
- if (mast & 0x01000000)
- return read_pll(dev, 0x004028) >> P;
- return read_pll(dev, 0x004030) >> P;
- case 0x00000c00:
- return read_clk(dev, clk_src_nvclk) >> P;
- }
- break;
- case 0x98:
- switch (mast & 0x00000c00) {
- case 0x00000000:
- return read_clk(dev, clk_src_nvclk) >> P;
- case 0x00000400:
- return 0;
- case 0x00000800:
- return read_clk(dev, clk_src_hclkm3d2) >> P;
- case 0x00000c00:
- return read_clk(dev, clk_src_mclk) >> P;
- }
- break;
- }
- break;
- case clk_src_dom6:
- switch (nv_device(drm->device)->chipset) {
- case 0x50:
- case 0xa0:
- return read_pll(dev, 0x00e810) >> 2;
- case 0x84:
- case 0x86:
- case 0x92:
- case 0x94:
- case 0x96:
- case 0x98:
- P = (read_div(dev) & 0x00000007) >> 0;
- switch (mast & 0x0c000000) {
- case 0x00000000: return read_clk(dev, clk_src_href);
- case 0x04000000: break;
- case 0x08000000: return read_clk(dev, clk_src_hclk);
- case 0x0c000000:
- return read_clk(dev, clk_src_hclkm3) >> P;
- }
- break;
- default:
- break;
- }
- default:
- break;
- }
-
- NV_DEBUG(drm, "unknown clock source %d 0x%08x\n", src, mast);
- return 0;
-}
-
-int
-nv50_pm_clocks_get(struct drm_device *dev, struct nouveau_pm_level *perflvl)
-{
- struct nouveau_drm *drm = nouveau_drm(dev);
- if (nv_device(drm->device)->chipset == 0xaa ||
- nv_device(drm->device)->chipset == 0xac)
- return 0;
-
- perflvl->core = read_clk(dev, clk_src_nvclk);
- perflvl->shader = read_clk(dev, clk_src_sclk);
- perflvl->memory = read_clk(dev, clk_src_mclk);
- if (nv_device(drm->device)->chipset != 0x50) {
- perflvl->vdec = read_clk(dev, clk_src_vdec);
- perflvl->dom6 = read_clk(dev, clk_src_dom6);
- }
-
- return 0;
-}
-
-struct nv50_pm_state {
- struct nouveau_pm_level *perflvl;
- struct hwsq_ucode eclk_hwsq;
- struct hwsq_ucode mclk_hwsq;
- u32 mscript;
- u32 mmast;
- u32 mctrl;
- u32 mcoef;
-};
-
-static u32
-calc_pll(struct drm_device *dev, u32 reg, struct nvbios_pll *pll,
- u32 clk, int *N1, int *M1, int *log2P)
-{
- struct nouveau_device *device = nouveau_dev(dev);
- struct nouveau_bios *bios = nouveau_bios(device);
- struct nouveau_clock *pclk = nouveau_clock(device);
- struct nouveau_pll_vals coef;
- int ret;
-
- ret = nvbios_pll_parse(bios, reg, pll);
- if (ret)
- return 0;
-
- pll->vco2.max_freq = 0;
- pll->refclk = read_pll_ref(dev, reg);
- if (!pll->refclk)
- return 0;
-
- ret = pclk->pll_calc(pclk, pll, clk, &coef);
- if (ret == 0)
- return 0;
-
- *N1 = coef.N1;
- *M1 = coef.M1;
- *log2P = coef.log2P;
- return ret;
-}
-
-static inline u32
-calc_div(u32 src, u32 target, int *div)
-{
- u32 clk0 = src, clk1 = src;
- for (*div = 0; *div <= 7; (*div)++) {
- if (clk0 <= target) {
- clk1 = clk0 << (*div ? 1 : 0);
- break;
- }
- clk0 >>= 1;
- }
-
- if (target - clk0 <= clk1 - target)
- return clk0;
- (*div)--;
- return clk1;
-}
-
-static inline u32
-clk_same(u32 a, u32 b)
-{
- return ((a / 1000) == (b / 1000));
-}
-
-static void
-mclk_precharge(struct nouveau_mem_exec_func *exec)
-{
- struct nv50_pm_state *info = exec->priv;
- struct hwsq_ucode *hwsq = &info->mclk_hwsq;
-
- hwsq_wr32(hwsq, 0x1002d4, 0x00000001);
-}
-
-static void
-mclk_refresh(struct nouveau_mem_exec_func *exec)
-{
- struct nv50_pm_state *info = exec->priv;
- struct hwsq_ucode *hwsq = &info->mclk_hwsq;
-
- hwsq_wr32(hwsq, 0x1002d0, 0x00000001);
-}
-
-static void
-mclk_refresh_auto(struct nouveau_mem_exec_func *exec, bool enable)
-{
- struct nv50_pm_state *info = exec->priv;
- struct hwsq_ucode *hwsq = &info->mclk_hwsq;
-
- hwsq_wr32(hwsq, 0x100210, enable ? 0x80000000 : 0x00000000);
-}
-
-static void
-mclk_refresh_self(struct nouveau_mem_exec_func *exec, bool enable)
-{
- struct nv50_pm_state *info = exec->priv;
- struct hwsq_ucode *hwsq = &info->mclk_hwsq;
-
- hwsq_wr32(hwsq, 0x1002dc, enable ? 0x00000001 : 0x00000000);
-}
-
-static void
-mclk_wait(struct nouveau_mem_exec_func *exec, u32 nsec)
-{
- struct nv50_pm_state *info = exec->priv;
- struct hwsq_ucode *hwsq = &info->mclk_hwsq;
-
- if (nsec > 1000)
- hwsq_usec(hwsq, (nsec + 500) / 1000);
-}
-
-static u32
-mclk_mrg(struct nouveau_mem_exec_func *exec, int mr)
-{
- struct nouveau_device *device = nouveau_dev(exec->dev);
- if (mr <= 1)
- return nv_rd32(device, 0x1002c0 + ((mr - 0) * 4));
- if (mr <= 3)
- return nv_rd32(device, 0x1002e0 + ((mr - 2) * 4));
- return 0;
-}
-
-static void
-mclk_mrs(struct nouveau_mem_exec_func *exec, int mr, u32 data)
-{
- struct nouveau_device *device = nouveau_dev(exec->dev);
- struct nouveau_fb *pfb = nouveau_fb(device);
- struct nv50_pm_state *info = exec->priv;
- struct hwsq_ucode *hwsq = &info->mclk_hwsq;
-
- if (mr <= 1) {
- if (pfb->ram->ranks > 1)
- hwsq_wr32(hwsq, 0x1002c8 + ((mr - 0) * 4), data);
- hwsq_wr32(hwsq, 0x1002c0 + ((mr - 0) * 4), data);
- } else
- if (mr <= 3) {
- if (pfb->ram->ranks > 1)
- hwsq_wr32(hwsq, 0x1002e8 + ((mr - 2) * 4), data);
- hwsq_wr32(hwsq, 0x1002e0 + ((mr - 2) * 4), data);
- }
-}
-
-static void
-mclk_clock_set(struct nouveau_mem_exec_func *exec)
-{
- struct nouveau_device *device = nouveau_dev(exec->dev);
- struct nv50_pm_state *info = exec->priv;
- struct hwsq_ucode *hwsq = &info->mclk_hwsq;
- u32 ctrl = nv_rd32(device, 0x004008);
-
- info->mmast = nv_rd32(device, 0x00c040);
- info->mmast &= ~0xc0000000; /* get MCLK_2 from HREF */
- info->mmast |= 0x0000c000; /* use MCLK_2 as MPLL_BYPASS clock */
-
- hwsq_wr32(hwsq, 0xc040, info->mmast);
- hwsq_wr32(hwsq, 0x4008, ctrl | 0x00000200); /* bypass MPLL */
- if (info->mctrl & 0x80000000)
- hwsq_wr32(hwsq, 0x400c, info->mcoef);
- hwsq_wr32(hwsq, 0x4008, info->mctrl);
-}
-
-static void
-mclk_timing_set(struct nouveau_mem_exec_func *exec)
-{
- struct nouveau_device *device = nouveau_dev(exec->dev);
- struct nv50_pm_state *info = exec->priv;
- struct nouveau_pm_level *perflvl = info->perflvl;
- struct hwsq_ucode *hwsq = &info->mclk_hwsq;
- int i;
-
- for (i = 0; i < 9; i++) {
- u32 reg = 0x100220 + (i * 4);
- u32 val = nv_rd32(device, reg);
- if (val != perflvl->timing.reg[i])
- hwsq_wr32(hwsq, reg, perflvl->timing.reg[i]);
- }
-}
-
-static int
-calc_mclk(struct drm_device *dev, struct nouveau_pm_level *perflvl,
- struct nv50_pm_state *info)
-{
- struct nouveau_drm *drm = nouveau_drm(dev);
- struct nouveau_device *device = nouveau_dev(dev);
- u32 crtc_mask = 0; /*XXX: nv50_display_active_crtcs(dev); */
- struct nouveau_mem_exec_func exec = {
- .dev = dev,
- .precharge = mclk_precharge,
- .refresh = mclk_refresh,
- .refresh_auto = mclk_refresh_auto,
- .refresh_self = mclk_refresh_self,
- .wait = mclk_wait,
- .mrg = mclk_mrg,
- .mrs = mclk_mrs,
- .clock_set = mclk_clock_set,
- .timing_set = mclk_timing_set,
- .priv = info
- };
- struct hwsq_ucode *hwsq = &info->mclk_hwsq;
- struct nvbios_pll pll;
- int N, M, P;
- int ret;
-
- /* use pcie refclock if possible, otherwise use mpll */
- info->mctrl = nv_rd32(device, 0x004008);
- info->mctrl &= ~0x81ff0200;
- if (clk_same(perflvl->memory, read_clk(dev, clk_src_href))) {
- info->mctrl |= 0x00000200 | (pll.bias_p << 19);
- } else {
- ret = calc_pll(dev, 0x4008, &pll, perflvl->memory, &N, &M, &P);
- if (ret == 0)
- return -EINVAL;
-
- info->mctrl |= 0x80000000 | (P << 22) | (P << 16);
- info->mctrl |= pll.bias_p << 19;
- info->mcoef = (N << 8) | M;
- }
-
- /* build the ucode which will reclock the memory for us */
- hwsq_init(hwsq);
- if (crtc_mask) {
- hwsq_op5f(hwsq, crtc_mask, 0x00); /* wait for scanout */
- hwsq_op5f(hwsq, crtc_mask, 0x01); /* wait for vblank */
- }
- if (nv_device(drm->device)->chipset >= 0x92)
- hwsq_wr32(hwsq, 0x611200, 0x00003300); /* disable scanout */
- hwsq_setf(hwsq, 0x10, 0); /* disable bus access */
- hwsq_op5f(hwsq, 0x00, 0x01); /* no idea :s */
-
- ret = nouveau_mem_exec(&exec, perflvl);
- if (ret)
- return ret;
-
- hwsq_setf(hwsq, 0x10, 1); /* enable bus access */
- hwsq_op5f(hwsq, 0x00, 0x00); /* no idea, reverse of 0x00, 0x01? */
- if (nv_device(drm->device)->chipset >= 0x92)
- hwsq_wr32(hwsq, 0x611200, 0x00003330); /* enable scanout */
- hwsq_fini(hwsq);
- return 0;
-}
-
-void *
-nv50_pm_clocks_pre(struct drm_device *dev, struct nouveau_pm_level *perflvl)
-{
- struct nouveau_device *device = nouveau_dev(dev);
- struct nouveau_drm *drm = nouveau_drm(dev);
- struct nv50_pm_state *info;
- struct hwsq_ucode *hwsq;
- struct nvbios_pll pll;
- u32 out, mast, divs, ctrl;
- int clk, ret = -EINVAL;
- int N, M, P1, P2;
-
- if (nv_device(drm->device)->chipset == 0xaa ||
- nv_device(drm->device)->chipset == 0xac)
- return ERR_PTR(-ENODEV);
-
- info = kmalloc(sizeof(*info), GFP_KERNEL);
- if (!info)
- return ERR_PTR(-ENOMEM);
- info->perflvl = perflvl;
-
- /* memory: build hwsq ucode which we'll use to reclock memory.
- * use pcie refclock if possible, otherwise use mpll */
- info->mclk_hwsq.len = 0;
- if (perflvl->memory) {
- ret = calc_mclk(dev, perflvl, info);
- if (ret)
- goto error;
- info->mscript = perflvl->memscript;
- }
-
- divs = read_div(dev);
- mast = info->mmast;
-
- /* start building HWSQ script for engine reclocking */
- hwsq = &info->eclk_hwsq;
- hwsq_init(hwsq);
- hwsq_setf(hwsq, 0x10, 0); /* disable bus access */
- hwsq_op5f(hwsq, 0x00, 0x01); /* wait for access disabled? */
-
- /* vdec/dom6: switch to "safe" clocks temporarily */
- if (perflvl->vdec) {
- mast &= ~0x00000c00;
- divs &= ~0x00000700;
- }
-
- if (perflvl->dom6) {
- mast &= ~0x0c000000;
- divs &= ~0x00000007;
- }
-
- hwsq_wr32(hwsq, 0x00c040, mast);
-
- /* vdec: avoid modifying xpll until we know exactly how the other
- * clock domains work, i suspect at least some of them can also be
- * tied to xpll...
- */
- if (perflvl->vdec) {
- /* see how close we can get using nvclk as a source */
- clk = calc_div(perflvl->core, perflvl->vdec, &P1);
-
- /* see how close we can get using xpll/hclk as a source */
- if (nv_device(drm->device)->chipset != 0x98)
- out = read_pll(dev, 0x004030);
- else
- out = read_clk(dev, clk_src_hclkm3d2);
- out = calc_div(out, perflvl->vdec, &P2);
-
- /* select whichever gets us closest */
- if (abs((int)perflvl->vdec - clk) <=
- abs((int)perflvl->vdec - out)) {
- if (nv_device(drm->device)->chipset != 0x98)
- mast |= 0x00000c00;
- divs |= P1 << 8;
- } else {
- mast |= 0x00000800;
- divs |= P2 << 8;
- }
- }
-
- /* dom6: nfi what this is, but we're limited to various combinations
- * of the host clock frequency
- */
- if (perflvl->dom6) {
- if (clk_same(perflvl->dom6, read_clk(dev, clk_src_href))) {
- mast |= 0x00000000;
- } else
- if (clk_same(perflvl->dom6, read_clk(dev, clk_src_hclk))) {
- mast |= 0x08000000;
- } else {
- clk = read_clk(dev, clk_src_hclk) * 3;
- clk = calc_div(clk, perflvl->dom6, &P1);
-
- mast |= 0x0c000000;
- divs |= P1;
- }
- }
-
- /* vdec/dom6: complete switch to new clocks */
- switch (nv_device(drm->device)->chipset) {
- case 0x92:
- case 0x94:
- case 0x96:
- hwsq_wr32(hwsq, 0x004800, divs);
- break;
- default:
- hwsq_wr32(hwsq, 0x004700, divs);
- break;
- }
-
- hwsq_wr32(hwsq, 0x00c040, mast);
-
- /* core/shader: make sure sclk/nvclk are disconnected from their
- * PLLs (nvclk to dom6, sclk to hclk)
- */
- if (nv_device(drm->device)->chipset < 0x92)
- mast = (mast & ~0x001000b0) | 0x00100080;
- else
- mast = (mast & ~0x000000b3) | 0x00000081;
-
- hwsq_wr32(hwsq, 0x00c040, mast);
-
- /* core: for the moment at least, always use nvpll */
- clk = calc_pll(dev, 0x4028, &pll, perflvl->core, &N, &M, &P1);
- if (clk == 0)
- goto error;
-
- ctrl = nv_rd32(device, 0x004028) & ~0xc03f0100;
- mast &= ~0x00100000;
- mast |= 3;
-
- hwsq_wr32(hwsq, 0x004028, 0x80000000 | (P1 << 19) | (P1 << 16) | ctrl);
- hwsq_wr32(hwsq, 0x00402c, (N << 8) | M);
-
- /* shader: tie to nvclk if possible, otherwise use spll. have to be
- * very careful that the shader clock is at least twice the core, or
- * some chipsets will be very unhappy. i expect most or all of these
- * cases will be handled by tying to nvclk, but it's possible there's
- * corners
- */
- ctrl = nv_rd32(device, 0x004020) & ~0xc03f0100;
-
- if (P1-- && perflvl->shader == (perflvl->core << 1)) {
- hwsq_wr32(hwsq, 0x004020, (P1 << 19) | (P1 << 16) | ctrl);
- hwsq_wr32(hwsq, 0x00c040, 0x00000020 | mast);
- } else {
- clk = calc_pll(dev, 0x4020, &pll, perflvl->shader, &N, &M, &P1);
- if (clk == 0)
- goto error;
- ctrl |= 0x80000000;
-
- hwsq_wr32(hwsq, 0x004020, (P1 << 19) | (P1 << 16) | ctrl);
- hwsq_wr32(hwsq, 0x004024, (N << 8) | M);
- hwsq_wr32(hwsq, 0x00c040, 0x00000030 | mast);
- }
-
- hwsq_setf(hwsq, 0x10, 1); /* enable bus access */
- hwsq_op5f(hwsq, 0x00, 0x00); /* wait for access enabled? */
- hwsq_fini(hwsq);
-
- return info;
-error:
- kfree(info);
- return ERR_PTR(ret);
-}
-
-static int
-prog_hwsq(struct drm_device *dev, struct hwsq_ucode *hwsq)
-{
- struct nouveau_device *device = nouveau_dev(dev);
- struct nouveau_drm *drm = nouveau_drm(dev);
- u32 hwsq_data, hwsq_kick;
- int i;
-
- if (nv_device(drm->device)->chipset < 0x94) {
- hwsq_data = 0x001400;
- hwsq_kick = 0x00000003;
- } else {
- hwsq_data = 0x080000;
- hwsq_kick = 0x00000001;
- }
- /* upload hwsq ucode */
- nv_mask(device, 0x001098, 0x00000008, 0x00000000);
- nv_wr32(device, 0x001304, 0x00000000);
- if (nv_device(drm->device)->chipset >= 0x92)
- nv_wr32(device, 0x001318, 0x00000000);
- for (i = 0; i < hwsq->len / 4; i++)
- nv_wr32(device, hwsq_data + (i * 4), hwsq->ptr.u32[i]);
- nv_mask(device, 0x001098, 0x00000018, 0x00000018);
-
- /* launch, and wait for completion */
- nv_wr32(device, 0x00130c, hwsq_kick);
- if (!nv_wait(device, 0x001308, 0x00000100, 0x00000000)) {
- NV_ERROR(drm, "hwsq ucode exec timed out\n");
- NV_ERROR(drm, "0x001308: 0x%08x\n", nv_rd32(device, 0x001308));
- for (i = 0; i < hwsq->len / 4; i++) {
- NV_ERROR(drm, "0x%06x: 0x%08x\n", 0x1400 + (i * 4),
- nv_rd32(device, 0x001400 + (i * 4)));
- }
-
- return -EIO;
- }
-
- return 0;
-}
-
-int
-nv50_pm_clocks_set(struct drm_device *dev, void *data)
-{
- struct nouveau_device *device = nouveau_dev(dev);
- struct nv50_pm_state *info = data;
- struct bit_entry M;
- int ret = -EBUSY;
-
- /* halt and idle execution engines */
- nv_mask(device, 0x002504, 0x00000001, 0x00000001);
- if (!nv_wait(device, 0x002504, 0x00000010, 0x00000010))
- goto resume;
- if (!nv_wait(device, 0x00251c, 0x0000003f, 0x0000003f))
- goto resume;
-
- /* program memory clock, if necessary - must come before engine clock
- * reprogramming due to how we construct the hwsq scripts in pre()
- */
-#define nouveau_bios_init_exec(a,b) nouveau_bios_run_init_table((a), (b), NULL, 0)
- if (info->mclk_hwsq.len) {
- /* execute some scripts that do ??? from the vbios.. */
- if (!bit_table(dev, 'M', &M) && M.version == 1) {
- if (M.length >= 6)
- nouveau_bios_init_exec(dev, ROM16(M.data[5]));
- if (M.length >= 8)
- nouveau_bios_init_exec(dev, ROM16(M.data[7]));
- if (M.length >= 10)
- nouveau_bios_init_exec(dev, ROM16(M.data[9]));
- nouveau_bios_init_exec(dev, info->mscript);
- }
-
- ret = prog_hwsq(dev, &info->mclk_hwsq);
- if (ret)
- goto resume;
- }
-
- /* program engine clocks */
- ret = prog_hwsq(dev, &info->eclk_hwsq);
-
-resume:
- nv_mask(device, 0x002504, 0x00000001, 0x00000000);
- kfree(info);
- return ret;
-}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.