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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, 855 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_pm.c b/drivers/gpu/drm/nouveau/nv50_pm.c
new file mode 100644
index 0000000..69620e3
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nv50_pm.c
@@ -0,0 +1,855 @@
+/*
+ * 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;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-02 10:23:53 +0000