Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2012 Intel Corporation |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice (including the next |
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
| 13 | * Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| 21 | * IN THE SOFTWARE. |
| 22 | * |
| 23 | * Authors: |
| 24 | * Eugeni Dodonov <eugeni.dodonov@intel.com> |
| 25 | * |
| 26 | */ |
| 27 | |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 28 | #include <linux/cpufreq.h> |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 29 | #include "i915_drv.h" |
| 30 | #include "intel_drv.h" |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 31 | #include "../../../platform/x86/intel_ips.h" |
| 32 | #include <linux/module.h> |
Damien Lespiau | f4db932 | 2013-06-24 22:59:50 +0100 | [diff] [blame] | 33 | #include <drm/i915_powerwell.h> |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 34 | |
Eugeni Dodonov | f6750b3 | 2012-04-18 11:51:14 -0300 | [diff] [blame] | 35 | /* FBC, or Frame Buffer Compression, is a technique employed to compress the |
| 36 | * framebuffer contents in-memory, aiming at reducing the required bandwidth |
| 37 | * during in-memory transfers and, therefore, reduce the power packet. |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 38 | * |
Eugeni Dodonov | f6750b3 | 2012-04-18 11:51:14 -0300 | [diff] [blame] | 39 | * The benefits of FBC are mostly visible with solid backgrounds and |
| 40 | * variation-less patterns. |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 41 | * |
Eugeni Dodonov | f6750b3 | 2012-04-18 11:51:14 -0300 | [diff] [blame] | 42 | * FBC-related functionality can be enabled by the means of the |
| 43 | * i915.i915_enable_fbc parameter |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 44 | */ |
| 45 | |
Chris Wilson | 3490ea5 | 2013-01-07 10:11:40 +0000 | [diff] [blame] | 46 | static bool intel_crtc_active(struct drm_crtc *crtc) |
| 47 | { |
| 48 | /* Be paranoid as we can arrive here with only partial |
| 49 | * state retrieved from the hardware during setup. |
| 50 | */ |
| 51 | return to_intel_crtc(crtc)->active && crtc->fb && crtc->mode.clock; |
| 52 | } |
| 53 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 54 | static void i8xx_disable_fbc(struct drm_device *dev) |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 55 | { |
| 56 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 57 | u32 fbc_ctl; |
| 58 | |
| 59 | /* Disable compression */ |
| 60 | fbc_ctl = I915_READ(FBC_CONTROL); |
| 61 | if ((fbc_ctl & FBC_CTL_EN) == 0) |
| 62 | return; |
| 63 | |
| 64 | fbc_ctl &= ~FBC_CTL_EN; |
| 65 | I915_WRITE(FBC_CONTROL, fbc_ctl); |
| 66 | |
| 67 | /* Wait for compressing bit to clear */ |
| 68 | if (wait_for((I915_READ(FBC_STATUS) & FBC_STAT_COMPRESSING) == 0, 10)) { |
| 69 | DRM_DEBUG_KMS("FBC idle timed out\n"); |
| 70 | return; |
| 71 | } |
| 72 | |
| 73 | DRM_DEBUG_KMS("disabled FBC\n"); |
| 74 | } |
| 75 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 76 | static void i8xx_enable_fbc(struct drm_crtc *crtc, unsigned long interval) |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 77 | { |
| 78 | struct drm_device *dev = crtc->dev; |
| 79 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 80 | struct drm_framebuffer *fb = crtc->fb; |
| 81 | struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb); |
| 82 | struct drm_i915_gem_object *obj = intel_fb->obj; |
| 83 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| 84 | int cfb_pitch; |
| 85 | int plane, i; |
| 86 | u32 fbc_ctl, fbc_ctl2; |
| 87 | |
Ben Widawsky | 5c3fe8b | 2013-06-27 16:30:21 -0700 | [diff] [blame] | 88 | cfb_pitch = dev_priv->fbc.size / FBC_LL_SIZE; |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 89 | if (fb->pitches[0] < cfb_pitch) |
| 90 | cfb_pitch = fb->pitches[0]; |
| 91 | |
| 92 | /* FBC_CTL wants 64B units */ |
| 93 | cfb_pitch = (cfb_pitch / 64) - 1; |
| 94 | plane = intel_crtc->plane == 0 ? FBC_CTL_PLANEA : FBC_CTL_PLANEB; |
| 95 | |
| 96 | /* Clear old tags */ |
| 97 | for (i = 0; i < (FBC_LL_SIZE / 32) + 1; i++) |
| 98 | I915_WRITE(FBC_TAG + (i * 4), 0); |
| 99 | |
| 100 | /* Set it up... */ |
| 101 | fbc_ctl2 = FBC_CTL_FENCE_DBL | FBC_CTL_IDLE_IMM | FBC_CTL_CPU_FENCE; |
| 102 | fbc_ctl2 |= plane; |
| 103 | I915_WRITE(FBC_CONTROL2, fbc_ctl2); |
| 104 | I915_WRITE(FBC_FENCE_OFF, crtc->y); |
| 105 | |
| 106 | /* enable it... */ |
| 107 | fbc_ctl = FBC_CTL_EN | FBC_CTL_PERIODIC; |
| 108 | if (IS_I945GM(dev)) |
| 109 | fbc_ctl |= FBC_CTL_C3_IDLE; /* 945 needs special SR handling */ |
| 110 | fbc_ctl |= (cfb_pitch & 0xff) << FBC_CTL_STRIDE_SHIFT; |
| 111 | fbc_ctl |= (interval & 0x2fff) << FBC_CTL_INTERVAL_SHIFT; |
| 112 | fbc_ctl |= obj->fence_reg; |
| 113 | I915_WRITE(FBC_CONTROL, fbc_ctl); |
| 114 | |
Ville Syrjälä | 84f44ce | 2013-04-17 17:48:49 +0300 | [diff] [blame] | 115 | DRM_DEBUG_KMS("enabled FBC, pitch %d, yoff %d, plane %c, ", |
| 116 | cfb_pitch, crtc->y, plane_name(intel_crtc->plane)); |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 117 | } |
| 118 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 119 | static bool i8xx_fbc_enabled(struct drm_device *dev) |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 120 | { |
| 121 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 122 | |
| 123 | return I915_READ(FBC_CONTROL) & FBC_CTL_EN; |
| 124 | } |
| 125 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 126 | static void g4x_enable_fbc(struct drm_crtc *crtc, unsigned long interval) |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 127 | { |
| 128 | struct drm_device *dev = crtc->dev; |
| 129 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 130 | struct drm_framebuffer *fb = crtc->fb; |
| 131 | struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb); |
| 132 | struct drm_i915_gem_object *obj = intel_fb->obj; |
| 133 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| 134 | int plane = intel_crtc->plane == 0 ? DPFC_CTL_PLANEA : DPFC_CTL_PLANEB; |
| 135 | unsigned long stall_watermark = 200; |
| 136 | u32 dpfc_ctl; |
| 137 | |
| 138 | dpfc_ctl = plane | DPFC_SR_EN | DPFC_CTL_LIMIT_1X; |
| 139 | dpfc_ctl |= DPFC_CTL_FENCE_EN | obj->fence_reg; |
| 140 | I915_WRITE(DPFC_CHICKEN, DPFC_HT_MODIFY); |
| 141 | |
| 142 | I915_WRITE(DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN | |
| 143 | (stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) | |
| 144 | (interval << DPFC_RECOMP_TIMER_COUNT_SHIFT)); |
| 145 | I915_WRITE(DPFC_FENCE_YOFF, crtc->y); |
| 146 | |
| 147 | /* enable it... */ |
| 148 | I915_WRITE(DPFC_CONTROL, I915_READ(DPFC_CONTROL) | DPFC_CTL_EN); |
| 149 | |
Ville Syrjälä | 84f44ce | 2013-04-17 17:48:49 +0300 | [diff] [blame] | 150 | DRM_DEBUG_KMS("enabled fbc on plane %c\n", plane_name(intel_crtc->plane)); |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 151 | } |
| 152 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 153 | static void g4x_disable_fbc(struct drm_device *dev) |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 154 | { |
| 155 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 156 | u32 dpfc_ctl; |
| 157 | |
| 158 | /* Disable compression */ |
| 159 | dpfc_ctl = I915_READ(DPFC_CONTROL); |
| 160 | if (dpfc_ctl & DPFC_CTL_EN) { |
| 161 | dpfc_ctl &= ~DPFC_CTL_EN; |
| 162 | I915_WRITE(DPFC_CONTROL, dpfc_ctl); |
| 163 | |
| 164 | DRM_DEBUG_KMS("disabled FBC\n"); |
| 165 | } |
| 166 | } |
| 167 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 168 | static bool g4x_fbc_enabled(struct drm_device *dev) |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 169 | { |
| 170 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 171 | |
| 172 | return I915_READ(DPFC_CONTROL) & DPFC_CTL_EN; |
| 173 | } |
| 174 | |
| 175 | static void sandybridge_blit_fbc_update(struct drm_device *dev) |
| 176 | { |
| 177 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 178 | u32 blt_ecoskpd; |
| 179 | |
| 180 | /* Make sure blitter notifies FBC of writes */ |
| 181 | gen6_gt_force_wake_get(dev_priv); |
| 182 | blt_ecoskpd = I915_READ(GEN6_BLITTER_ECOSKPD); |
| 183 | blt_ecoskpd |= GEN6_BLITTER_FBC_NOTIFY << |
| 184 | GEN6_BLITTER_LOCK_SHIFT; |
| 185 | I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd); |
| 186 | blt_ecoskpd |= GEN6_BLITTER_FBC_NOTIFY; |
| 187 | I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd); |
| 188 | blt_ecoskpd &= ~(GEN6_BLITTER_FBC_NOTIFY << |
| 189 | GEN6_BLITTER_LOCK_SHIFT); |
| 190 | I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd); |
| 191 | POSTING_READ(GEN6_BLITTER_ECOSKPD); |
| 192 | gen6_gt_force_wake_put(dev_priv); |
| 193 | } |
| 194 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 195 | static void ironlake_enable_fbc(struct drm_crtc *crtc, unsigned long interval) |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 196 | { |
| 197 | struct drm_device *dev = crtc->dev; |
| 198 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 199 | struct drm_framebuffer *fb = crtc->fb; |
| 200 | struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb); |
| 201 | struct drm_i915_gem_object *obj = intel_fb->obj; |
| 202 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| 203 | int plane = intel_crtc->plane == 0 ? DPFC_CTL_PLANEA : DPFC_CTL_PLANEB; |
| 204 | unsigned long stall_watermark = 200; |
| 205 | u32 dpfc_ctl; |
| 206 | |
| 207 | dpfc_ctl = I915_READ(ILK_DPFC_CONTROL); |
| 208 | dpfc_ctl &= DPFC_RESERVED; |
| 209 | dpfc_ctl |= (plane | DPFC_CTL_LIMIT_1X); |
| 210 | /* Set persistent mode for front-buffer rendering, ala X. */ |
| 211 | dpfc_ctl |= DPFC_CTL_PERSISTENT_MODE; |
| 212 | dpfc_ctl |= (DPFC_CTL_FENCE_EN | obj->fence_reg); |
| 213 | I915_WRITE(ILK_DPFC_CHICKEN, DPFC_HT_MODIFY); |
| 214 | |
| 215 | I915_WRITE(ILK_DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN | |
| 216 | (stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) | |
| 217 | (interval << DPFC_RECOMP_TIMER_COUNT_SHIFT)); |
| 218 | I915_WRITE(ILK_DPFC_FENCE_YOFF, crtc->y); |
Ben Widawsky | f343c5f | 2013-07-05 14:41:04 -0700 | [diff] [blame] | 219 | I915_WRITE(ILK_FBC_RT_BASE, i915_gem_obj_ggtt_offset(obj) | ILK_FBC_RT_VALID); |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 220 | /* enable it... */ |
| 221 | I915_WRITE(ILK_DPFC_CONTROL, dpfc_ctl | DPFC_CTL_EN); |
| 222 | |
| 223 | if (IS_GEN6(dev)) { |
| 224 | I915_WRITE(SNB_DPFC_CTL_SA, |
| 225 | SNB_CPU_FENCE_ENABLE | obj->fence_reg); |
| 226 | I915_WRITE(DPFC_CPU_FENCE_OFFSET, crtc->y); |
| 227 | sandybridge_blit_fbc_update(dev); |
| 228 | } |
| 229 | |
Ville Syrjälä | 84f44ce | 2013-04-17 17:48:49 +0300 | [diff] [blame] | 230 | DRM_DEBUG_KMS("enabled fbc on plane %c\n", plane_name(intel_crtc->plane)); |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 231 | } |
| 232 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 233 | static void ironlake_disable_fbc(struct drm_device *dev) |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 234 | { |
| 235 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 236 | u32 dpfc_ctl; |
| 237 | |
| 238 | /* Disable compression */ |
| 239 | dpfc_ctl = I915_READ(ILK_DPFC_CONTROL); |
| 240 | if (dpfc_ctl & DPFC_CTL_EN) { |
| 241 | dpfc_ctl &= ~DPFC_CTL_EN; |
| 242 | I915_WRITE(ILK_DPFC_CONTROL, dpfc_ctl); |
| 243 | |
Rodrigo Vivi | b74ea10 | 2013-05-09 14:08:38 -0300 | [diff] [blame] | 244 | if (IS_IVYBRIDGE(dev)) |
Damien Lespiau | 7dd23ba | 2013-05-10 14:33:17 +0100 | [diff] [blame] | 245 | /* WaFbcDisableDpfcClockGating:ivb */ |
Rodrigo Vivi | b74ea10 | 2013-05-09 14:08:38 -0300 | [diff] [blame] | 246 | I915_WRITE(ILK_DSPCLK_GATE_D, |
| 247 | I915_READ(ILK_DSPCLK_GATE_D) & |
| 248 | ~ILK_DPFCUNIT_CLOCK_GATE_DISABLE); |
| 249 | |
Rodrigo Vivi | d89f207 | 2013-05-09 14:20:50 -0300 | [diff] [blame] | 250 | if (IS_HASWELL(dev)) |
Damien Lespiau | 7dd23ba | 2013-05-10 14:33:17 +0100 | [diff] [blame] | 251 | /* WaFbcDisableDpfcClockGating:hsw */ |
Rodrigo Vivi | d89f207 | 2013-05-09 14:20:50 -0300 | [diff] [blame] | 252 | I915_WRITE(HSW_CLKGATE_DISABLE_PART_1, |
| 253 | I915_READ(HSW_CLKGATE_DISABLE_PART_1) & |
| 254 | ~HSW_DPFC_GATING_DISABLE); |
| 255 | |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 256 | DRM_DEBUG_KMS("disabled FBC\n"); |
| 257 | } |
| 258 | } |
| 259 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 260 | static bool ironlake_fbc_enabled(struct drm_device *dev) |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 261 | { |
| 262 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 263 | |
| 264 | return I915_READ(ILK_DPFC_CONTROL) & DPFC_CTL_EN; |
| 265 | } |
| 266 | |
Rodrigo Vivi | abe959c | 2013-05-06 19:37:33 -0300 | [diff] [blame] | 267 | static void gen7_enable_fbc(struct drm_crtc *crtc, unsigned long interval) |
| 268 | { |
| 269 | struct drm_device *dev = crtc->dev; |
| 270 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 271 | struct drm_framebuffer *fb = crtc->fb; |
| 272 | struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb); |
| 273 | struct drm_i915_gem_object *obj = intel_fb->obj; |
| 274 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| 275 | |
Ben Widawsky | f343c5f | 2013-07-05 14:41:04 -0700 | [diff] [blame] | 276 | I915_WRITE(IVB_FBC_RT_BASE, i915_gem_obj_ggtt_offset(obj)); |
Rodrigo Vivi | abe959c | 2013-05-06 19:37:33 -0300 | [diff] [blame] | 277 | |
| 278 | I915_WRITE(ILK_DPFC_CONTROL, DPFC_CTL_EN | DPFC_CTL_LIMIT_1X | |
| 279 | IVB_DPFC_CTL_FENCE_EN | |
| 280 | intel_crtc->plane << IVB_DPFC_CTL_PLANE_SHIFT); |
| 281 | |
Rodrigo Vivi | 891348b | 2013-05-06 19:37:36 -0300 | [diff] [blame] | 282 | if (IS_IVYBRIDGE(dev)) { |
Damien Lespiau | 7dd23ba | 2013-05-10 14:33:17 +0100 | [diff] [blame] | 283 | /* WaFbcAsynchFlipDisableFbcQueue:ivb */ |
Rodrigo Vivi | 891348b | 2013-05-06 19:37:36 -0300 | [diff] [blame] | 284 | I915_WRITE(ILK_DISPLAY_CHICKEN1, ILK_FBCQ_DIS); |
Damien Lespiau | 7dd23ba | 2013-05-10 14:33:17 +0100 | [diff] [blame] | 285 | /* WaFbcDisableDpfcClockGating:ivb */ |
Rodrigo Vivi | 891348b | 2013-05-06 19:37:36 -0300 | [diff] [blame] | 286 | I915_WRITE(ILK_DSPCLK_GATE_D, |
| 287 | I915_READ(ILK_DSPCLK_GATE_D) | |
| 288 | ILK_DPFCUNIT_CLOCK_GATE_DISABLE); |
Rodrigo Vivi | 2855416 | 2013-05-06 19:37:37 -0300 | [diff] [blame] | 289 | } else { |
Damien Lespiau | 7dd23ba | 2013-05-10 14:33:17 +0100 | [diff] [blame] | 290 | /* WaFbcAsynchFlipDisableFbcQueue:hsw */ |
Rodrigo Vivi | 2855416 | 2013-05-06 19:37:37 -0300 | [diff] [blame] | 291 | I915_WRITE(HSW_PIPE_SLICE_CHICKEN_1(intel_crtc->pipe), |
| 292 | HSW_BYPASS_FBC_QUEUE); |
Damien Lespiau | 7dd23ba | 2013-05-10 14:33:17 +0100 | [diff] [blame] | 293 | /* WaFbcDisableDpfcClockGating:hsw */ |
Rodrigo Vivi | d89f207 | 2013-05-09 14:20:50 -0300 | [diff] [blame] | 294 | I915_WRITE(HSW_CLKGATE_DISABLE_PART_1, |
| 295 | I915_READ(HSW_CLKGATE_DISABLE_PART_1) | |
| 296 | HSW_DPFC_GATING_DISABLE); |
Rodrigo Vivi | 891348b | 2013-05-06 19:37:36 -0300 | [diff] [blame] | 297 | } |
Rodrigo Vivi | b74ea10 | 2013-05-09 14:08:38 -0300 | [diff] [blame] | 298 | |
Rodrigo Vivi | abe959c | 2013-05-06 19:37:33 -0300 | [diff] [blame] | 299 | I915_WRITE(SNB_DPFC_CTL_SA, |
| 300 | SNB_CPU_FENCE_ENABLE | obj->fence_reg); |
| 301 | I915_WRITE(DPFC_CPU_FENCE_OFFSET, crtc->y); |
| 302 | |
| 303 | sandybridge_blit_fbc_update(dev); |
| 304 | |
| 305 | DRM_DEBUG_KMS("enabled fbc on plane %d\n", intel_crtc->plane); |
| 306 | } |
| 307 | |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 308 | bool intel_fbc_enabled(struct drm_device *dev) |
| 309 | { |
| 310 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 311 | |
| 312 | if (!dev_priv->display.fbc_enabled) |
| 313 | return false; |
| 314 | |
| 315 | return dev_priv->display.fbc_enabled(dev); |
| 316 | } |
| 317 | |
| 318 | static void intel_fbc_work_fn(struct work_struct *__work) |
| 319 | { |
| 320 | struct intel_fbc_work *work = |
| 321 | container_of(to_delayed_work(__work), |
| 322 | struct intel_fbc_work, work); |
| 323 | struct drm_device *dev = work->crtc->dev; |
| 324 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 325 | |
| 326 | mutex_lock(&dev->struct_mutex); |
Ben Widawsky | 5c3fe8b | 2013-06-27 16:30:21 -0700 | [diff] [blame] | 327 | if (work == dev_priv->fbc.fbc_work) { |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 328 | /* Double check that we haven't switched fb without cancelling |
| 329 | * the prior work. |
| 330 | */ |
| 331 | if (work->crtc->fb == work->fb) { |
| 332 | dev_priv->display.enable_fbc(work->crtc, |
| 333 | work->interval); |
| 334 | |
Ben Widawsky | 5c3fe8b | 2013-06-27 16:30:21 -0700 | [diff] [blame] | 335 | dev_priv->fbc.plane = to_intel_crtc(work->crtc)->plane; |
| 336 | dev_priv->fbc.fb_id = work->crtc->fb->base.id; |
| 337 | dev_priv->fbc.y = work->crtc->y; |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 338 | } |
| 339 | |
Ben Widawsky | 5c3fe8b | 2013-06-27 16:30:21 -0700 | [diff] [blame] | 340 | dev_priv->fbc.fbc_work = NULL; |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 341 | } |
| 342 | mutex_unlock(&dev->struct_mutex); |
| 343 | |
| 344 | kfree(work); |
| 345 | } |
| 346 | |
| 347 | static void intel_cancel_fbc_work(struct drm_i915_private *dev_priv) |
| 348 | { |
Ben Widawsky | 5c3fe8b | 2013-06-27 16:30:21 -0700 | [diff] [blame] | 349 | if (dev_priv->fbc.fbc_work == NULL) |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 350 | return; |
| 351 | |
| 352 | DRM_DEBUG_KMS("cancelling pending FBC enable\n"); |
| 353 | |
| 354 | /* Synchronisation is provided by struct_mutex and checking of |
Ben Widawsky | 5c3fe8b | 2013-06-27 16:30:21 -0700 | [diff] [blame] | 355 | * dev_priv->fbc.fbc_work, so we can perform the cancellation |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 356 | * entirely asynchronously. |
| 357 | */ |
Ben Widawsky | 5c3fe8b | 2013-06-27 16:30:21 -0700 | [diff] [blame] | 358 | if (cancel_delayed_work(&dev_priv->fbc.fbc_work->work)) |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 359 | /* tasklet was killed before being run, clean up */ |
Ben Widawsky | 5c3fe8b | 2013-06-27 16:30:21 -0700 | [diff] [blame] | 360 | kfree(dev_priv->fbc.fbc_work); |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 361 | |
| 362 | /* Mark the work as no longer wanted so that if it does |
| 363 | * wake-up (because the work was already running and waiting |
| 364 | * for our mutex), it will discover that is no longer |
| 365 | * necessary to run. |
| 366 | */ |
Ben Widawsky | 5c3fe8b | 2013-06-27 16:30:21 -0700 | [diff] [blame] | 367 | dev_priv->fbc.fbc_work = NULL; |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 368 | } |
| 369 | |
Damien Lespiau | b63fb44 | 2013-06-24 16:22:01 +0100 | [diff] [blame] | 370 | static void intel_enable_fbc(struct drm_crtc *crtc, unsigned long interval) |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 371 | { |
| 372 | struct intel_fbc_work *work; |
| 373 | struct drm_device *dev = crtc->dev; |
| 374 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 375 | |
| 376 | if (!dev_priv->display.enable_fbc) |
| 377 | return; |
| 378 | |
| 379 | intel_cancel_fbc_work(dev_priv); |
| 380 | |
| 381 | work = kzalloc(sizeof *work, GFP_KERNEL); |
| 382 | if (work == NULL) { |
Paulo Zanoni | 6cdcb5e | 2013-06-12 17:27:29 -0300 | [diff] [blame] | 383 | DRM_ERROR("Failed to allocate FBC work structure\n"); |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 384 | dev_priv->display.enable_fbc(crtc, interval); |
| 385 | return; |
| 386 | } |
| 387 | |
| 388 | work->crtc = crtc; |
| 389 | work->fb = crtc->fb; |
| 390 | work->interval = interval; |
| 391 | INIT_DELAYED_WORK(&work->work, intel_fbc_work_fn); |
| 392 | |
Ben Widawsky | 5c3fe8b | 2013-06-27 16:30:21 -0700 | [diff] [blame] | 393 | dev_priv->fbc.fbc_work = work; |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 394 | |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 395 | /* Delay the actual enabling to let pageflipping cease and the |
| 396 | * display to settle before starting the compression. Note that |
| 397 | * this delay also serves a second purpose: it allows for a |
| 398 | * vblank to pass after disabling the FBC before we attempt |
| 399 | * to modify the control registers. |
| 400 | * |
| 401 | * A more complicated solution would involve tracking vblanks |
| 402 | * following the termination of the page-flipping sequence |
| 403 | * and indeed performing the enable as a co-routine and not |
| 404 | * waiting synchronously upon the vblank. |
Damien Lespiau | 7457d61 | 2013-06-07 17:41:07 +0100 | [diff] [blame] | 405 | * |
| 406 | * WaFbcWaitForVBlankBeforeEnable:ilk,snb |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 407 | */ |
| 408 | schedule_delayed_work(&work->work, msecs_to_jiffies(50)); |
| 409 | } |
| 410 | |
| 411 | void intel_disable_fbc(struct drm_device *dev) |
| 412 | { |
| 413 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 414 | |
| 415 | intel_cancel_fbc_work(dev_priv); |
| 416 | |
| 417 | if (!dev_priv->display.disable_fbc) |
| 418 | return; |
| 419 | |
| 420 | dev_priv->display.disable_fbc(dev); |
Ben Widawsky | 5c3fe8b | 2013-06-27 16:30:21 -0700 | [diff] [blame] | 421 | dev_priv->fbc.plane = -1; |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 422 | } |
| 423 | |
Chris Wilson | 29ebf90 | 2013-07-27 17:23:55 +0100 | [diff] [blame] | 424 | static bool set_no_fbc_reason(struct drm_i915_private *dev_priv, |
| 425 | enum no_fbc_reason reason) |
| 426 | { |
| 427 | if (dev_priv->fbc.no_fbc_reason == reason) |
| 428 | return false; |
| 429 | |
| 430 | dev_priv->fbc.no_fbc_reason = reason; |
| 431 | return true; |
| 432 | } |
| 433 | |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 434 | /** |
| 435 | * intel_update_fbc - enable/disable FBC as needed |
| 436 | * @dev: the drm_device |
| 437 | * |
| 438 | * Set up the framebuffer compression hardware at mode set time. We |
| 439 | * enable it if possible: |
| 440 | * - plane A only (on pre-965) |
| 441 | * - no pixel mulitply/line duplication |
| 442 | * - no alpha buffer discard |
| 443 | * - no dual wide |
Paulo Zanoni | f85da86 | 2013-06-04 16:53:39 -0300 | [diff] [blame] | 444 | * - framebuffer <= max_hdisplay in width, max_vdisplay in height |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 445 | * |
| 446 | * We can't assume that any compression will take place (worst case), |
| 447 | * so the compressed buffer has to be the same size as the uncompressed |
| 448 | * one. It also must reside (along with the line length buffer) in |
| 449 | * stolen memory. |
| 450 | * |
| 451 | * We need to enable/disable FBC on a global basis. |
| 452 | */ |
| 453 | void intel_update_fbc(struct drm_device *dev) |
| 454 | { |
| 455 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 456 | struct drm_crtc *crtc = NULL, *tmp_crtc; |
| 457 | struct intel_crtc *intel_crtc; |
| 458 | struct drm_framebuffer *fb; |
| 459 | struct intel_framebuffer *intel_fb; |
| 460 | struct drm_i915_gem_object *obj; |
Ville Syrjälä | ef644fd | 2013-09-04 18:25:21 +0300 | [diff] [blame] | 461 | const struct drm_display_mode *mode; |
| 462 | const struct drm_display_mode *adjusted_mode; |
Paulo Zanoni | f85da86 | 2013-06-04 16:53:39 -0300 | [diff] [blame] | 463 | unsigned int max_hdisplay, max_vdisplay; |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 464 | |
Chris Wilson | 29ebf90 | 2013-07-27 17:23:55 +0100 | [diff] [blame] | 465 | if (!I915_HAS_FBC(dev)) { |
| 466 | set_no_fbc_reason(dev_priv, FBC_UNSUPPORTED); |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 467 | return; |
Chris Wilson | 29ebf90 | 2013-07-27 17:23:55 +0100 | [diff] [blame] | 468 | } |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 469 | |
Chris Wilson | 29ebf90 | 2013-07-27 17:23:55 +0100 | [diff] [blame] | 470 | if (!i915_powersave) { |
| 471 | if (set_no_fbc_reason(dev_priv, FBC_MODULE_PARAM)) |
| 472 | DRM_DEBUG_KMS("fbc disabled per module param\n"); |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 473 | return; |
Chris Wilson | 29ebf90 | 2013-07-27 17:23:55 +0100 | [diff] [blame] | 474 | } |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 475 | |
| 476 | /* |
| 477 | * If FBC is already on, we just have to verify that we can |
| 478 | * keep it that way... |
| 479 | * Need to disable if: |
| 480 | * - more than one pipe is active |
| 481 | * - changing FBC params (stride, fence, mode) |
| 482 | * - new fb is too large to fit in compressed buffer |
| 483 | * - going to an unsupported config (interlace, pixel multiply, etc.) |
| 484 | */ |
| 485 | list_for_each_entry(tmp_crtc, &dev->mode_config.crtc_list, head) { |
Chris Wilson | 3490ea5 | 2013-01-07 10:11:40 +0000 | [diff] [blame] | 486 | if (intel_crtc_active(tmp_crtc) && |
| 487 | !to_intel_crtc(tmp_crtc)->primary_disabled) { |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 488 | if (crtc) { |
Chris Wilson | 29ebf90 | 2013-07-27 17:23:55 +0100 | [diff] [blame] | 489 | if (set_no_fbc_reason(dev_priv, FBC_MULTIPLE_PIPES)) |
| 490 | DRM_DEBUG_KMS("more than one pipe active, disabling compression\n"); |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 491 | goto out_disable; |
| 492 | } |
| 493 | crtc = tmp_crtc; |
| 494 | } |
| 495 | } |
| 496 | |
| 497 | if (!crtc || crtc->fb == NULL) { |
Chris Wilson | 29ebf90 | 2013-07-27 17:23:55 +0100 | [diff] [blame] | 498 | if (set_no_fbc_reason(dev_priv, FBC_NO_OUTPUT)) |
| 499 | DRM_DEBUG_KMS("no output, disabling\n"); |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 500 | goto out_disable; |
| 501 | } |
| 502 | |
| 503 | intel_crtc = to_intel_crtc(crtc); |
| 504 | fb = crtc->fb; |
| 505 | intel_fb = to_intel_framebuffer(fb); |
| 506 | obj = intel_fb->obj; |
Ville Syrjälä | ef644fd | 2013-09-04 18:25:21 +0300 | [diff] [blame] | 507 | mode = &intel_crtc->config.requested_mode; |
| 508 | adjusted_mode = &intel_crtc->config.adjusted_mode; |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 509 | |
Damien Lespiau | 8a5729a | 2013-06-24 16:22:02 +0100 | [diff] [blame] | 510 | if (i915_enable_fbc < 0 && |
| 511 | INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev)) { |
Chris Wilson | 29ebf90 | 2013-07-27 17:23:55 +0100 | [diff] [blame] | 512 | if (set_no_fbc_reason(dev_priv, FBC_CHIP_DEFAULT)) |
| 513 | DRM_DEBUG_KMS("disabled per chip default\n"); |
Damien Lespiau | 8a5729a | 2013-06-24 16:22:02 +0100 | [diff] [blame] | 514 | goto out_disable; |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 515 | } |
Damien Lespiau | 8a5729a | 2013-06-24 16:22:02 +0100 | [diff] [blame] | 516 | if (!i915_enable_fbc) { |
Chris Wilson | 29ebf90 | 2013-07-27 17:23:55 +0100 | [diff] [blame] | 517 | if (set_no_fbc_reason(dev_priv, FBC_MODULE_PARAM)) |
| 518 | DRM_DEBUG_KMS("fbc disabled per module param\n"); |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 519 | goto out_disable; |
| 520 | } |
Ville Syrjälä | ef644fd | 2013-09-04 18:25:21 +0300 | [diff] [blame] | 521 | if ((adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) || |
| 522 | (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)) { |
Chris Wilson | 29ebf90 | 2013-07-27 17:23:55 +0100 | [diff] [blame] | 523 | if (set_no_fbc_reason(dev_priv, FBC_UNSUPPORTED_MODE)) |
| 524 | DRM_DEBUG_KMS("mode incompatible with compression, " |
| 525 | "disabling\n"); |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 526 | goto out_disable; |
| 527 | } |
Paulo Zanoni | f85da86 | 2013-06-04 16:53:39 -0300 | [diff] [blame] | 528 | |
| 529 | if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5) { |
| 530 | max_hdisplay = 4096; |
| 531 | max_vdisplay = 2048; |
| 532 | } else { |
| 533 | max_hdisplay = 2048; |
| 534 | max_vdisplay = 1536; |
| 535 | } |
Ville Syrjälä | ef644fd | 2013-09-04 18:25:21 +0300 | [diff] [blame] | 536 | if ((mode->hdisplay > max_hdisplay) || |
| 537 | (mode->vdisplay > max_vdisplay)) { |
Chris Wilson | 29ebf90 | 2013-07-27 17:23:55 +0100 | [diff] [blame] | 538 | if (set_no_fbc_reason(dev_priv, FBC_MODE_TOO_LARGE)) |
| 539 | DRM_DEBUG_KMS("mode too large for compression, disabling\n"); |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 540 | goto out_disable; |
| 541 | } |
Rodrigo Vivi | 891348b | 2013-05-06 19:37:36 -0300 | [diff] [blame] | 542 | if ((IS_I915GM(dev) || IS_I945GM(dev) || IS_HASWELL(dev)) && |
| 543 | intel_crtc->plane != 0) { |
Chris Wilson | 29ebf90 | 2013-07-27 17:23:55 +0100 | [diff] [blame] | 544 | if (set_no_fbc_reason(dev_priv, FBC_BAD_PLANE)) |
| 545 | DRM_DEBUG_KMS("plane not 0, disabling compression\n"); |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 546 | goto out_disable; |
| 547 | } |
| 548 | |
| 549 | /* The use of a CPU fence is mandatory in order to detect writes |
| 550 | * by the CPU to the scanout and trigger updates to the FBC. |
| 551 | */ |
| 552 | if (obj->tiling_mode != I915_TILING_X || |
| 553 | obj->fence_reg == I915_FENCE_REG_NONE) { |
Chris Wilson | 29ebf90 | 2013-07-27 17:23:55 +0100 | [diff] [blame] | 554 | if (set_no_fbc_reason(dev_priv, FBC_NOT_TILED)) |
| 555 | DRM_DEBUG_KMS("framebuffer not tiled or fenced, disabling compression\n"); |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 556 | goto out_disable; |
| 557 | } |
| 558 | |
| 559 | /* If the kernel debugger is active, always disable compression */ |
| 560 | if (in_dbg_master()) |
| 561 | goto out_disable; |
| 562 | |
Chris Wilson | 11be49e | 2012-11-15 11:32:20 +0000 | [diff] [blame] | 563 | if (i915_gem_stolen_setup_compression(dev, intel_fb->obj->base.size)) { |
Chris Wilson | 29ebf90 | 2013-07-27 17:23:55 +0100 | [diff] [blame] | 564 | if (set_no_fbc_reason(dev_priv, FBC_STOLEN_TOO_SMALL)) |
| 565 | DRM_DEBUG_KMS("framebuffer too large, disabling compression\n"); |
Chris Wilson | 11be49e | 2012-11-15 11:32:20 +0000 | [diff] [blame] | 566 | goto out_disable; |
| 567 | } |
| 568 | |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 569 | /* If the scanout has not changed, don't modify the FBC settings. |
| 570 | * Note that we make the fundamental assumption that the fb->obj |
| 571 | * cannot be unpinned (and have its GTT offset and fence revoked) |
| 572 | * without first being decoupled from the scanout and FBC disabled. |
| 573 | */ |
Ben Widawsky | 5c3fe8b | 2013-06-27 16:30:21 -0700 | [diff] [blame] | 574 | if (dev_priv->fbc.plane == intel_crtc->plane && |
| 575 | dev_priv->fbc.fb_id == fb->base.id && |
| 576 | dev_priv->fbc.y == crtc->y) |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 577 | return; |
| 578 | |
| 579 | if (intel_fbc_enabled(dev)) { |
| 580 | /* We update FBC along two paths, after changing fb/crtc |
| 581 | * configuration (modeswitching) and after page-flipping |
| 582 | * finishes. For the latter, we know that not only did |
| 583 | * we disable the FBC at the start of the page-flip |
| 584 | * sequence, but also more than one vblank has passed. |
| 585 | * |
| 586 | * For the former case of modeswitching, it is possible |
| 587 | * to switch between two FBC valid configurations |
| 588 | * instantaneously so we do need to disable the FBC |
| 589 | * before we can modify its control registers. We also |
| 590 | * have to wait for the next vblank for that to take |
| 591 | * effect. However, since we delay enabling FBC we can |
| 592 | * assume that a vblank has passed since disabling and |
| 593 | * that we can safely alter the registers in the deferred |
| 594 | * callback. |
| 595 | * |
| 596 | * In the scenario that we go from a valid to invalid |
| 597 | * and then back to valid FBC configuration we have |
| 598 | * no strict enforcement that a vblank occurred since |
| 599 | * disabling the FBC. However, along all current pipe |
| 600 | * disabling paths we do need to wait for a vblank at |
| 601 | * some point. And we wait before enabling FBC anyway. |
| 602 | */ |
| 603 | DRM_DEBUG_KMS("disabling active FBC for update\n"); |
| 604 | intel_disable_fbc(dev); |
| 605 | } |
| 606 | |
| 607 | intel_enable_fbc(crtc, 500); |
Chris Wilson | 29ebf90 | 2013-07-27 17:23:55 +0100 | [diff] [blame] | 608 | dev_priv->fbc.no_fbc_reason = FBC_OK; |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 609 | return; |
| 610 | |
| 611 | out_disable: |
| 612 | /* Multiple disables should be harmless */ |
| 613 | if (intel_fbc_enabled(dev)) { |
| 614 | DRM_DEBUG_KMS("unsupported config, disabling FBC\n"); |
| 615 | intel_disable_fbc(dev); |
| 616 | } |
Chris Wilson | 11be49e | 2012-11-15 11:32:20 +0000 | [diff] [blame] | 617 | i915_gem_stolen_cleanup_compression(dev); |
Eugeni Dodonov | 85208be | 2012-04-16 22:20:34 -0300 | [diff] [blame] | 618 | } |
| 619 | |
Daniel Vetter | c921aba | 2012-04-26 23:28:17 +0200 | [diff] [blame] | 620 | static void i915_pineview_get_mem_freq(struct drm_device *dev) |
| 621 | { |
| 622 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 623 | u32 tmp; |
| 624 | |
| 625 | tmp = I915_READ(CLKCFG); |
| 626 | |
| 627 | switch (tmp & CLKCFG_FSB_MASK) { |
| 628 | case CLKCFG_FSB_533: |
| 629 | dev_priv->fsb_freq = 533; /* 133*4 */ |
| 630 | break; |
| 631 | case CLKCFG_FSB_800: |
| 632 | dev_priv->fsb_freq = 800; /* 200*4 */ |
| 633 | break; |
| 634 | case CLKCFG_FSB_667: |
| 635 | dev_priv->fsb_freq = 667; /* 167*4 */ |
| 636 | break; |
| 637 | case CLKCFG_FSB_400: |
| 638 | dev_priv->fsb_freq = 400; /* 100*4 */ |
| 639 | break; |
| 640 | } |
| 641 | |
| 642 | switch (tmp & CLKCFG_MEM_MASK) { |
| 643 | case CLKCFG_MEM_533: |
| 644 | dev_priv->mem_freq = 533; |
| 645 | break; |
| 646 | case CLKCFG_MEM_667: |
| 647 | dev_priv->mem_freq = 667; |
| 648 | break; |
| 649 | case CLKCFG_MEM_800: |
| 650 | dev_priv->mem_freq = 800; |
| 651 | break; |
| 652 | } |
| 653 | |
| 654 | /* detect pineview DDR3 setting */ |
| 655 | tmp = I915_READ(CSHRDDR3CTL); |
| 656 | dev_priv->is_ddr3 = (tmp & CSHRDDR3CTL_DDR3) ? 1 : 0; |
| 657 | } |
| 658 | |
| 659 | static void i915_ironlake_get_mem_freq(struct drm_device *dev) |
| 660 | { |
| 661 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 662 | u16 ddrpll, csipll; |
| 663 | |
| 664 | ddrpll = I915_READ16(DDRMPLL1); |
| 665 | csipll = I915_READ16(CSIPLL0); |
| 666 | |
| 667 | switch (ddrpll & 0xff) { |
| 668 | case 0xc: |
| 669 | dev_priv->mem_freq = 800; |
| 670 | break; |
| 671 | case 0x10: |
| 672 | dev_priv->mem_freq = 1066; |
| 673 | break; |
| 674 | case 0x14: |
| 675 | dev_priv->mem_freq = 1333; |
| 676 | break; |
| 677 | case 0x18: |
| 678 | dev_priv->mem_freq = 1600; |
| 679 | break; |
| 680 | default: |
| 681 | DRM_DEBUG_DRIVER("unknown memory frequency 0x%02x\n", |
| 682 | ddrpll & 0xff); |
| 683 | dev_priv->mem_freq = 0; |
| 684 | break; |
| 685 | } |
| 686 | |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 687 | dev_priv->ips.r_t = dev_priv->mem_freq; |
Daniel Vetter | c921aba | 2012-04-26 23:28:17 +0200 | [diff] [blame] | 688 | |
| 689 | switch (csipll & 0x3ff) { |
| 690 | case 0x00c: |
| 691 | dev_priv->fsb_freq = 3200; |
| 692 | break; |
| 693 | case 0x00e: |
| 694 | dev_priv->fsb_freq = 3733; |
| 695 | break; |
| 696 | case 0x010: |
| 697 | dev_priv->fsb_freq = 4266; |
| 698 | break; |
| 699 | case 0x012: |
| 700 | dev_priv->fsb_freq = 4800; |
| 701 | break; |
| 702 | case 0x014: |
| 703 | dev_priv->fsb_freq = 5333; |
| 704 | break; |
| 705 | case 0x016: |
| 706 | dev_priv->fsb_freq = 5866; |
| 707 | break; |
| 708 | case 0x018: |
| 709 | dev_priv->fsb_freq = 6400; |
| 710 | break; |
| 711 | default: |
| 712 | DRM_DEBUG_DRIVER("unknown fsb frequency 0x%04x\n", |
| 713 | csipll & 0x3ff); |
| 714 | dev_priv->fsb_freq = 0; |
| 715 | break; |
| 716 | } |
| 717 | |
| 718 | if (dev_priv->fsb_freq == 3200) { |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 719 | dev_priv->ips.c_m = 0; |
Daniel Vetter | c921aba | 2012-04-26 23:28:17 +0200 | [diff] [blame] | 720 | } else if (dev_priv->fsb_freq > 3200 && dev_priv->fsb_freq <= 4800) { |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 721 | dev_priv->ips.c_m = 1; |
Daniel Vetter | c921aba | 2012-04-26 23:28:17 +0200 | [diff] [blame] | 722 | } else { |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 723 | dev_priv->ips.c_m = 2; |
Daniel Vetter | c921aba | 2012-04-26 23:28:17 +0200 | [diff] [blame] | 724 | } |
| 725 | } |
| 726 | |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 727 | static const struct cxsr_latency cxsr_latency_table[] = { |
| 728 | {1, 0, 800, 400, 3382, 33382, 3983, 33983}, /* DDR2-400 SC */ |
| 729 | {1, 0, 800, 667, 3354, 33354, 3807, 33807}, /* DDR2-667 SC */ |
| 730 | {1, 0, 800, 800, 3347, 33347, 3763, 33763}, /* DDR2-800 SC */ |
| 731 | {1, 1, 800, 667, 6420, 36420, 6873, 36873}, /* DDR3-667 SC */ |
| 732 | {1, 1, 800, 800, 5902, 35902, 6318, 36318}, /* DDR3-800 SC */ |
| 733 | |
| 734 | {1, 0, 667, 400, 3400, 33400, 4021, 34021}, /* DDR2-400 SC */ |
| 735 | {1, 0, 667, 667, 3372, 33372, 3845, 33845}, /* DDR2-667 SC */ |
| 736 | {1, 0, 667, 800, 3386, 33386, 3822, 33822}, /* DDR2-800 SC */ |
| 737 | {1, 1, 667, 667, 6438, 36438, 6911, 36911}, /* DDR3-667 SC */ |
| 738 | {1, 1, 667, 800, 5941, 35941, 6377, 36377}, /* DDR3-800 SC */ |
| 739 | |
| 740 | {1, 0, 400, 400, 3472, 33472, 4173, 34173}, /* DDR2-400 SC */ |
| 741 | {1, 0, 400, 667, 3443, 33443, 3996, 33996}, /* DDR2-667 SC */ |
| 742 | {1, 0, 400, 800, 3430, 33430, 3946, 33946}, /* DDR2-800 SC */ |
| 743 | {1, 1, 400, 667, 6509, 36509, 7062, 37062}, /* DDR3-667 SC */ |
| 744 | {1, 1, 400, 800, 5985, 35985, 6501, 36501}, /* DDR3-800 SC */ |
| 745 | |
| 746 | {0, 0, 800, 400, 3438, 33438, 4065, 34065}, /* DDR2-400 SC */ |
| 747 | {0, 0, 800, 667, 3410, 33410, 3889, 33889}, /* DDR2-667 SC */ |
| 748 | {0, 0, 800, 800, 3403, 33403, 3845, 33845}, /* DDR2-800 SC */ |
| 749 | {0, 1, 800, 667, 6476, 36476, 6955, 36955}, /* DDR3-667 SC */ |
| 750 | {0, 1, 800, 800, 5958, 35958, 6400, 36400}, /* DDR3-800 SC */ |
| 751 | |
| 752 | {0, 0, 667, 400, 3456, 33456, 4103, 34106}, /* DDR2-400 SC */ |
| 753 | {0, 0, 667, 667, 3428, 33428, 3927, 33927}, /* DDR2-667 SC */ |
| 754 | {0, 0, 667, 800, 3443, 33443, 3905, 33905}, /* DDR2-800 SC */ |
| 755 | {0, 1, 667, 667, 6494, 36494, 6993, 36993}, /* DDR3-667 SC */ |
| 756 | {0, 1, 667, 800, 5998, 35998, 6460, 36460}, /* DDR3-800 SC */ |
| 757 | |
| 758 | {0, 0, 400, 400, 3528, 33528, 4255, 34255}, /* DDR2-400 SC */ |
| 759 | {0, 0, 400, 667, 3500, 33500, 4079, 34079}, /* DDR2-667 SC */ |
| 760 | {0, 0, 400, 800, 3487, 33487, 4029, 34029}, /* DDR2-800 SC */ |
| 761 | {0, 1, 400, 667, 6566, 36566, 7145, 37145}, /* DDR3-667 SC */ |
| 762 | {0, 1, 400, 800, 6042, 36042, 6584, 36584}, /* DDR3-800 SC */ |
| 763 | }; |
| 764 | |
Daniel Vetter | 63c6227 | 2012-04-21 23:17:55 +0200 | [diff] [blame] | 765 | static const struct cxsr_latency *intel_get_cxsr_latency(int is_desktop, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 766 | int is_ddr3, |
| 767 | int fsb, |
| 768 | int mem) |
| 769 | { |
| 770 | const struct cxsr_latency *latency; |
| 771 | int i; |
| 772 | |
| 773 | if (fsb == 0 || mem == 0) |
| 774 | return NULL; |
| 775 | |
| 776 | for (i = 0; i < ARRAY_SIZE(cxsr_latency_table); i++) { |
| 777 | latency = &cxsr_latency_table[i]; |
| 778 | if (is_desktop == latency->is_desktop && |
| 779 | is_ddr3 == latency->is_ddr3 && |
| 780 | fsb == latency->fsb_freq && mem == latency->mem_freq) |
| 781 | return latency; |
| 782 | } |
| 783 | |
| 784 | DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n"); |
| 785 | |
| 786 | return NULL; |
| 787 | } |
| 788 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 789 | static void pineview_disable_cxsr(struct drm_device *dev) |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 790 | { |
| 791 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 792 | |
| 793 | /* deactivate cxsr */ |
| 794 | I915_WRITE(DSPFW3, I915_READ(DSPFW3) & ~PINEVIEW_SELF_REFRESH_EN); |
| 795 | } |
| 796 | |
| 797 | /* |
| 798 | * Latency for FIFO fetches is dependent on several factors: |
| 799 | * - memory configuration (speed, channels) |
| 800 | * - chipset |
| 801 | * - current MCH state |
| 802 | * It can be fairly high in some situations, so here we assume a fairly |
| 803 | * pessimal value. It's a tradeoff between extra memory fetches (if we |
| 804 | * set this value too high, the FIFO will fetch frequently to stay full) |
| 805 | * and power consumption (set it too low to save power and we might see |
| 806 | * FIFO underruns and display "flicker"). |
| 807 | * |
| 808 | * A value of 5us seems to be a good balance; safe for very low end |
| 809 | * platforms but not overly aggressive on lower latency configs. |
| 810 | */ |
| 811 | static const int latency_ns = 5000; |
| 812 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 813 | static int i9xx_get_fifo_size(struct drm_device *dev, int plane) |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 814 | { |
| 815 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 816 | uint32_t dsparb = I915_READ(DSPARB); |
| 817 | int size; |
| 818 | |
| 819 | size = dsparb & 0x7f; |
| 820 | if (plane) |
| 821 | size = ((dsparb >> DSPARB_CSTART_SHIFT) & 0x7f) - size; |
| 822 | |
| 823 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, |
| 824 | plane ? "B" : "A", size); |
| 825 | |
| 826 | return size; |
| 827 | } |
| 828 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 829 | static int i85x_get_fifo_size(struct drm_device *dev, int plane) |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 830 | { |
| 831 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 832 | uint32_t dsparb = I915_READ(DSPARB); |
| 833 | int size; |
| 834 | |
| 835 | size = dsparb & 0x1ff; |
| 836 | if (plane) |
| 837 | size = ((dsparb >> DSPARB_BEND_SHIFT) & 0x1ff) - size; |
| 838 | size >>= 1; /* Convert to cachelines */ |
| 839 | |
| 840 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, |
| 841 | plane ? "B" : "A", size); |
| 842 | |
| 843 | return size; |
| 844 | } |
| 845 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 846 | static int i845_get_fifo_size(struct drm_device *dev, int plane) |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 847 | { |
| 848 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 849 | uint32_t dsparb = I915_READ(DSPARB); |
| 850 | int size; |
| 851 | |
| 852 | size = dsparb & 0x7f; |
| 853 | size >>= 2; /* Convert to cachelines */ |
| 854 | |
| 855 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, |
| 856 | plane ? "B" : "A", |
| 857 | size); |
| 858 | |
| 859 | return size; |
| 860 | } |
| 861 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 862 | static int i830_get_fifo_size(struct drm_device *dev, int plane) |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 863 | { |
| 864 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 865 | uint32_t dsparb = I915_READ(DSPARB); |
| 866 | int size; |
| 867 | |
| 868 | size = dsparb & 0x7f; |
| 869 | size >>= 1; /* Convert to cachelines */ |
| 870 | |
| 871 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, |
| 872 | plane ? "B" : "A", size); |
| 873 | |
| 874 | return size; |
| 875 | } |
| 876 | |
| 877 | /* Pineview has different values for various configs */ |
| 878 | static const struct intel_watermark_params pineview_display_wm = { |
| 879 | PINEVIEW_DISPLAY_FIFO, |
| 880 | PINEVIEW_MAX_WM, |
| 881 | PINEVIEW_DFT_WM, |
| 882 | PINEVIEW_GUARD_WM, |
| 883 | PINEVIEW_FIFO_LINE_SIZE |
| 884 | }; |
| 885 | static const struct intel_watermark_params pineview_display_hplloff_wm = { |
| 886 | PINEVIEW_DISPLAY_FIFO, |
| 887 | PINEVIEW_MAX_WM, |
| 888 | PINEVIEW_DFT_HPLLOFF_WM, |
| 889 | PINEVIEW_GUARD_WM, |
| 890 | PINEVIEW_FIFO_LINE_SIZE |
| 891 | }; |
| 892 | static const struct intel_watermark_params pineview_cursor_wm = { |
| 893 | PINEVIEW_CURSOR_FIFO, |
| 894 | PINEVIEW_CURSOR_MAX_WM, |
| 895 | PINEVIEW_CURSOR_DFT_WM, |
| 896 | PINEVIEW_CURSOR_GUARD_WM, |
| 897 | PINEVIEW_FIFO_LINE_SIZE, |
| 898 | }; |
| 899 | static const struct intel_watermark_params pineview_cursor_hplloff_wm = { |
| 900 | PINEVIEW_CURSOR_FIFO, |
| 901 | PINEVIEW_CURSOR_MAX_WM, |
| 902 | PINEVIEW_CURSOR_DFT_WM, |
| 903 | PINEVIEW_CURSOR_GUARD_WM, |
| 904 | PINEVIEW_FIFO_LINE_SIZE |
| 905 | }; |
| 906 | static const struct intel_watermark_params g4x_wm_info = { |
| 907 | G4X_FIFO_SIZE, |
| 908 | G4X_MAX_WM, |
| 909 | G4X_MAX_WM, |
| 910 | 2, |
| 911 | G4X_FIFO_LINE_SIZE, |
| 912 | }; |
| 913 | static const struct intel_watermark_params g4x_cursor_wm_info = { |
| 914 | I965_CURSOR_FIFO, |
| 915 | I965_CURSOR_MAX_WM, |
| 916 | I965_CURSOR_DFT_WM, |
| 917 | 2, |
| 918 | G4X_FIFO_LINE_SIZE, |
| 919 | }; |
| 920 | static const struct intel_watermark_params valleyview_wm_info = { |
| 921 | VALLEYVIEW_FIFO_SIZE, |
| 922 | VALLEYVIEW_MAX_WM, |
| 923 | VALLEYVIEW_MAX_WM, |
| 924 | 2, |
| 925 | G4X_FIFO_LINE_SIZE, |
| 926 | }; |
| 927 | static const struct intel_watermark_params valleyview_cursor_wm_info = { |
| 928 | I965_CURSOR_FIFO, |
| 929 | VALLEYVIEW_CURSOR_MAX_WM, |
| 930 | I965_CURSOR_DFT_WM, |
| 931 | 2, |
| 932 | G4X_FIFO_LINE_SIZE, |
| 933 | }; |
| 934 | static const struct intel_watermark_params i965_cursor_wm_info = { |
| 935 | I965_CURSOR_FIFO, |
| 936 | I965_CURSOR_MAX_WM, |
| 937 | I965_CURSOR_DFT_WM, |
| 938 | 2, |
| 939 | I915_FIFO_LINE_SIZE, |
| 940 | }; |
| 941 | static const struct intel_watermark_params i945_wm_info = { |
| 942 | I945_FIFO_SIZE, |
| 943 | I915_MAX_WM, |
| 944 | 1, |
| 945 | 2, |
| 946 | I915_FIFO_LINE_SIZE |
| 947 | }; |
| 948 | static const struct intel_watermark_params i915_wm_info = { |
| 949 | I915_FIFO_SIZE, |
| 950 | I915_MAX_WM, |
| 951 | 1, |
| 952 | 2, |
| 953 | I915_FIFO_LINE_SIZE |
| 954 | }; |
| 955 | static const struct intel_watermark_params i855_wm_info = { |
| 956 | I855GM_FIFO_SIZE, |
| 957 | I915_MAX_WM, |
| 958 | 1, |
| 959 | 2, |
| 960 | I830_FIFO_LINE_SIZE |
| 961 | }; |
| 962 | static const struct intel_watermark_params i830_wm_info = { |
| 963 | I830_FIFO_SIZE, |
| 964 | I915_MAX_WM, |
| 965 | 1, |
| 966 | 2, |
| 967 | I830_FIFO_LINE_SIZE |
| 968 | }; |
| 969 | |
| 970 | static const struct intel_watermark_params ironlake_display_wm_info = { |
| 971 | ILK_DISPLAY_FIFO, |
| 972 | ILK_DISPLAY_MAXWM, |
| 973 | ILK_DISPLAY_DFTWM, |
| 974 | 2, |
| 975 | ILK_FIFO_LINE_SIZE |
| 976 | }; |
| 977 | static const struct intel_watermark_params ironlake_cursor_wm_info = { |
| 978 | ILK_CURSOR_FIFO, |
| 979 | ILK_CURSOR_MAXWM, |
| 980 | ILK_CURSOR_DFTWM, |
| 981 | 2, |
| 982 | ILK_FIFO_LINE_SIZE |
| 983 | }; |
| 984 | static const struct intel_watermark_params ironlake_display_srwm_info = { |
| 985 | ILK_DISPLAY_SR_FIFO, |
| 986 | ILK_DISPLAY_MAX_SRWM, |
| 987 | ILK_DISPLAY_DFT_SRWM, |
| 988 | 2, |
| 989 | ILK_FIFO_LINE_SIZE |
| 990 | }; |
| 991 | static const struct intel_watermark_params ironlake_cursor_srwm_info = { |
| 992 | ILK_CURSOR_SR_FIFO, |
| 993 | ILK_CURSOR_MAX_SRWM, |
| 994 | ILK_CURSOR_DFT_SRWM, |
| 995 | 2, |
| 996 | ILK_FIFO_LINE_SIZE |
| 997 | }; |
| 998 | |
| 999 | static const struct intel_watermark_params sandybridge_display_wm_info = { |
| 1000 | SNB_DISPLAY_FIFO, |
| 1001 | SNB_DISPLAY_MAXWM, |
| 1002 | SNB_DISPLAY_DFTWM, |
| 1003 | 2, |
| 1004 | SNB_FIFO_LINE_SIZE |
| 1005 | }; |
| 1006 | static const struct intel_watermark_params sandybridge_cursor_wm_info = { |
| 1007 | SNB_CURSOR_FIFO, |
| 1008 | SNB_CURSOR_MAXWM, |
| 1009 | SNB_CURSOR_DFTWM, |
| 1010 | 2, |
| 1011 | SNB_FIFO_LINE_SIZE |
| 1012 | }; |
| 1013 | static const struct intel_watermark_params sandybridge_display_srwm_info = { |
| 1014 | SNB_DISPLAY_SR_FIFO, |
| 1015 | SNB_DISPLAY_MAX_SRWM, |
| 1016 | SNB_DISPLAY_DFT_SRWM, |
| 1017 | 2, |
| 1018 | SNB_FIFO_LINE_SIZE |
| 1019 | }; |
| 1020 | static const struct intel_watermark_params sandybridge_cursor_srwm_info = { |
| 1021 | SNB_CURSOR_SR_FIFO, |
| 1022 | SNB_CURSOR_MAX_SRWM, |
| 1023 | SNB_CURSOR_DFT_SRWM, |
| 1024 | 2, |
| 1025 | SNB_FIFO_LINE_SIZE |
| 1026 | }; |
| 1027 | |
| 1028 | |
| 1029 | /** |
| 1030 | * intel_calculate_wm - calculate watermark level |
| 1031 | * @clock_in_khz: pixel clock |
| 1032 | * @wm: chip FIFO params |
| 1033 | * @pixel_size: display pixel size |
| 1034 | * @latency_ns: memory latency for the platform |
| 1035 | * |
| 1036 | * Calculate the watermark level (the level at which the display plane will |
| 1037 | * start fetching from memory again). Each chip has a different display |
| 1038 | * FIFO size and allocation, so the caller needs to figure that out and pass |
| 1039 | * in the correct intel_watermark_params structure. |
| 1040 | * |
| 1041 | * As the pixel clock runs, the FIFO will be drained at a rate that depends |
| 1042 | * on the pixel size. When it reaches the watermark level, it'll start |
| 1043 | * fetching FIFO line sized based chunks from memory until the FIFO fills |
| 1044 | * past the watermark point. If the FIFO drains completely, a FIFO underrun |
| 1045 | * will occur, and a display engine hang could result. |
| 1046 | */ |
| 1047 | static unsigned long intel_calculate_wm(unsigned long clock_in_khz, |
| 1048 | const struct intel_watermark_params *wm, |
| 1049 | int fifo_size, |
| 1050 | int pixel_size, |
| 1051 | unsigned long latency_ns) |
| 1052 | { |
| 1053 | long entries_required, wm_size; |
| 1054 | |
| 1055 | /* |
| 1056 | * Note: we need to make sure we don't overflow for various clock & |
| 1057 | * latency values. |
| 1058 | * clocks go from a few thousand to several hundred thousand. |
| 1059 | * latency is usually a few thousand |
| 1060 | */ |
| 1061 | entries_required = ((clock_in_khz / 1000) * pixel_size * latency_ns) / |
| 1062 | 1000; |
| 1063 | entries_required = DIV_ROUND_UP(entries_required, wm->cacheline_size); |
| 1064 | |
| 1065 | DRM_DEBUG_KMS("FIFO entries required for mode: %ld\n", entries_required); |
| 1066 | |
| 1067 | wm_size = fifo_size - (entries_required + wm->guard_size); |
| 1068 | |
| 1069 | DRM_DEBUG_KMS("FIFO watermark level: %ld\n", wm_size); |
| 1070 | |
| 1071 | /* Don't promote wm_size to unsigned... */ |
| 1072 | if (wm_size > (long)wm->max_wm) |
| 1073 | wm_size = wm->max_wm; |
| 1074 | if (wm_size <= 0) |
| 1075 | wm_size = wm->default_wm; |
| 1076 | return wm_size; |
| 1077 | } |
| 1078 | |
| 1079 | static struct drm_crtc *single_enabled_crtc(struct drm_device *dev) |
| 1080 | { |
| 1081 | struct drm_crtc *crtc, *enabled = NULL; |
| 1082 | |
| 1083 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
Chris Wilson | 3490ea5 | 2013-01-07 10:11:40 +0000 | [diff] [blame] | 1084 | if (intel_crtc_active(crtc)) { |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1085 | if (enabled) |
| 1086 | return NULL; |
| 1087 | enabled = crtc; |
| 1088 | } |
| 1089 | } |
| 1090 | |
| 1091 | return enabled; |
| 1092 | } |
| 1093 | |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 1094 | static void pineview_update_wm(struct drm_crtc *unused_crtc) |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1095 | { |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 1096 | struct drm_device *dev = unused_crtc->dev; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1097 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1098 | struct drm_crtc *crtc; |
| 1099 | const struct cxsr_latency *latency; |
| 1100 | u32 reg; |
| 1101 | unsigned long wm; |
| 1102 | |
| 1103 | latency = intel_get_cxsr_latency(IS_PINEVIEW_G(dev), dev_priv->is_ddr3, |
| 1104 | dev_priv->fsb_freq, dev_priv->mem_freq); |
| 1105 | if (!latency) { |
| 1106 | DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n"); |
| 1107 | pineview_disable_cxsr(dev); |
| 1108 | return; |
| 1109 | } |
| 1110 | |
| 1111 | crtc = single_enabled_crtc(dev); |
| 1112 | if (crtc) { |
Ville Syrjälä | 4fe8590 | 2013-09-04 18:25:22 +0300 | [diff] [blame^] | 1113 | int clock = to_intel_crtc(crtc)->config.adjusted_mode.clock; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1114 | int pixel_size = crtc->fb->bits_per_pixel / 8; |
| 1115 | |
| 1116 | /* Display SR */ |
| 1117 | wm = intel_calculate_wm(clock, &pineview_display_wm, |
| 1118 | pineview_display_wm.fifo_size, |
| 1119 | pixel_size, latency->display_sr); |
| 1120 | reg = I915_READ(DSPFW1); |
| 1121 | reg &= ~DSPFW_SR_MASK; |
| 1122 | reg |= wm << DSPFW_SR_SHIFT; |
| 1123 | I915_WRITE(DSPFW1, reg); |
| 1124 | DRM_DEBUG_KMS("DSPFW1 register is %x\n", reg); |
| 1125 | |
| 1126 | /* cursor SR */ |
| 1127 | wm = intel_calculate_wm(clock, &pineview_cursor_wm, |
| 1128 | pineview_display_wm.fifo_size, |
| 1129 | pixel_size, latency->cursor_sr); |
| 1130 | reg = I915_READ(DSPFW3); |
| 1131 | reg &= ~DSPFW_CURSOR_SR_MASK; |
| 1132 | reg |= (wm & 0x3f) << DSPFW_CURSOR_SR_SHIFT; |
| 1133 | I915_WRITE(DSPFW3, reg); |
| 1134 | |
| 1135 | /* Display HPLL off SR */ |
| 1136 | wm = intel_calculate_wm(clock, &pineview_display_hplloff_wm, |
| 1137 | pineview_display_hplloff_wm.fifo_size, |
| 1138 | pixel_size, latency->display_hpll_disable); |
| 1139 | reg = I915_READ(DSPFW3); |
| 1140 | reg &= ~DSPFW_HPLL_SR_MASK; |
| 1141 | reg |= wm & DSPFW_HPLL_SR_MASK; |
| 1142 | I915_WRITE(DSPFW3, reg); |
| 1143 | |
| 1144 | /* cursor HPLL off SR */ |
| 1145 | wm = intel_calculate_wm(clock, &pineview_cursor_hplloff_wm, |
| 1146 | pineview_display_hplloff_wm.fifo_size, |
| 1147 | pixel_size, latency->cursor_hpll_disable); |
| 1148 | reg = I915_READ(DSPFW3); |
| 1149 | reg &= ~DSPFW_HPLL_CURSOR_MASK; |
| 1150 | reg |= (wm & 0x3f) << DSPFW_HPLL_CURSOR_SHIFT; |
| 1151 | I915_WRITE(DSPFW3, reg); |
| 1152 | DRM_DEBUG_KMS("DSPFW3 register is %x\n", reg); |
| 1153 | |
| 1154 | /* activate cxsr */ |
| 1155 | I915_WRITE(DSPFW3, |
| 1156 | I915_READ(DSPFW3) | PINEVIEW_SELF_REFRESH_EN); |
| 1157 | DRM_DEBUG_KMS("Self-refresh is enabled\n"); |
| 1158 | } else { |
| 1159 | pineview_disable_cxsr(dev); |
| 1160 | DRM_DEBUG_KMS("Self-refresh is disabled\n"); |
| 1161 | } |
| 1162 | } |
| 1163 | |
| 1164 | static bool g4x_compute_wm0(struct drm_device *dev, |
| 1165 | int plane, |
| 1166 | const struct intel_watermark_params *display, |
| 1167 | int display_latency_ns, |
| 1168 | const struct intel_watermark_params *cursor, |
| 1169 | int cursor_latency_ns, |
| 1170 | int *plane_wm, |
| 1171 | int *cursor_wm) |
| 1172 | { |
| 1173 | struct drm_crtc *crtc; |
Ville Syrjälä | 4fe8590 | 2013-09-04 18:25:22 +0300 | [diff] [blame^] | 1174 | const struct drm_display_mode *adjusted_mode; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1175 | int htotal, hdisplay, clock, pixel_size; |
| 1176 | int line_time_us, line_count; |
| 1177 | int entries, tlb_miss; |
| 1178 | |
| 1179 | crtc = intel_get_crtc_for_plane(dev, plane); |
Chris Wilson | 3490ea5 | 2013-01-07 10:11:40 +0000 | [diff] [blame] | 1180 | if (!intel_crtc_active(crtc)) { |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1181 | *cursor_wm = cursor->guard_size; |
| 1182 | *plane_wm = display->guard_size; |
| 1183 | return false; |
| 1184 | } |
| 1185 | |
Ville Syrjälä | 4fe8590 | 2013-09-04 18:25:22 +0300 | [diff] [blame^] | 1186 | adjusted_mode = &to_intel_crtc(crtc)->config.adjusted_mode; |
| 1187 | clock = adjusted_mode->clock; |
| 1188 | htotal = adjusted_mode->htotal; |
| 1189 | hdisplay = to_intel_crtc(crtc)->config.requested_mode.hdisplay; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1190 | pixel_size = crtc->fb->bits_per_pixel / 8; |
| 1191 | |
| 1192 | /* Use the small buffer method to calculate plane watermark */ |
| 1193 | entries = ((clock * pixel_size / 1000) * display_latency_ns) / 1000; |
| 1194 | tlb_miss = display->fifo_size*display->cacheline_size - hdisplay * 8; |
| 1195 | if (tlb_miss > 0) |
| 1196 | entries += tlb_miss; |
| 1197 | entries = DIV_ROUND_UP(entries, display->cacheline_size); |
| 1198 | *plane_wm = entries + display->guard_size; |
| 1199 | if (*plane_wm > (int)display->max_wm) |
| 1200 | *plane_wm = display->max_wm; |
| 1201 | |
| 1202 | /* Use the large buffer method to calculate cursor watermark */ |
| 1203 | line_time_us = ((htotal * 1000) / clock); |
| 1204 | line_count = (cursor_latency_ns / line_time_us + 1000) / 1000; |
| 1205 | entries = line_count * 64 * pixel_size; |
| 1206 | tlb_miss = cursor->fifo_size*cursor->cacheline_size - hdisplay * 8; |
| 1207 | if (tlb_miss > 0) |
| 1208 | entries += tlb_miss; |
| 1209 | entries = DIV_ROUND_UP(entries, cursor->cacheline_size); |
| 1210 | *cursor_wm = entries + cursor->guard_size; |
| 1211 | if (*cursor_wm > (int)cursor->max_wm) |
| 1212 | *cursor_wm = (int)cursor->max_wm; |
| 1213 | |
| 1214 | return true; |
| 1215 | } |
| 1216 | |
| 1217 | /* |
| 1218 | * Check the wm result. |
| 1219 | * |
| 1220 | * If any calculated watermark values is larger than the maximum value that |
| 1221 | * can be programmed into the associated watermark register, that watermark |
| 1222 | * must be disabled. |
| 1223 | */ |
| 1224 | static bool g4x_check_srwm(struct drm_device *dev, |
| 1225 | int display_wm, int cursor_wm, |
| 1226 | const struct intel_watermark_params *display, |
| 1227 | const struct intel_watermark_params *cursor) |
| 1228 | { |
| 1229 | DRM_DEBUG_KMS("SR watermark: display plane %d, cursor %d\n", |
| 1230 | display_wm, cursor_wm); |
| 1231 | |
| 1232 | if (display_wm > display->max_wm) { |
| 1233 | DRM_DEBUG_KMS("display watermark is too large(%d/%ld), disabling\n", |
| 1234 | display_wm, display->max_wm); |
| 1235 | return false; |
| 1236 | } |
| 1237 | |
| 1238 | if (cursor_wm > cursor->max_wm) { |
| 1239 | DRM_DEBUG_KMS("cursor watermark is too large(%d/%ld), disabling\n", |
| 1240 | cursor_wm, cursor->max_wm); |
| 1241 | return false; |
| 1242 | } |
| 1243 | |
| 1244 | if (!(display_wm || cursor_wm)) { |
| 1245 | DRM_DEBUG_KMS("SR latency is 0, disabling\n"); |
| 1246 | return false; |
| 1247 | } |
| 1248 | |
| 1249 | return true; |
| 1250 | } |
| 1251 | |
| 1252 | static bool g4x_compute_srwm(struct drm_device *dev, |
| 1253 | int plane, |
| 1254 | int latency_ns, |
| 1255 | const struct intel_watermark_params *display, |
| 1256 | const struct intel_watermark_params *cursor, |
| 1257 | int *display_wm, int *cursor_wm) |
| 1258 | { |
| 1259 | struct drm_crtc *crtc; |
Ville Syrjälä | 4fe8590 | 2013-09-04 18:25:22 +0300 | [diff] [blame^] | 1260 | const struct drm_display_mode *adjusted_mode; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1261 | int hdisplay, htotal, pixel_size, clock; |
| 1262 | unsigned long line_time_us; |
| 1263 | int line_count, line_size; |
| 1264 | int small, large; |
| 1265 | int entries; |
| 1266 | |
| 1267 | if (!latency_ns) { |
| 1268 | *display_wm = *cursor_wm = 0; |
| 1269 | return false; |
| 1270 | } |
| 1271 | |
| 1272 | crtc = intel_get_crtc_for_plane(dev, plane); |
Ville Syrjälä | 4fe8590 | 2013-09-04 18:25:22 +0300 | [diff] [blame^] | 1273 | adjusted_mode = &to_intel_crtc(crtc)->config.adjusted_mode; |
| 1274 | clock = adjusted_mode->clock; |
| 1275 | htotal = adjusted_mode->htotal; |
| 1276 | hdisplay = to_intel_crtc(crtc)->config.requested_mode.hdisplay; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1277 | pixel_size = crtc->fb->bits_per_pixel / 8; |
| 1278 | |
| 1279 | line_time_us = (htotal * 1000) / clock; |
| 1280 | line_count = (latency_ns / line_time_us + 1000) / 1000; |
| 1281 | line_size = hdisplay * pixel_size; |
| 1282 | |
| 1283 | /* Use the minimum of the small and large buffer method for primary */ |
| 1284 | small = ((clock * pixel_size / 1000) * latency_ns) / 1000; |
| 1285 | large = line_count * line_size; |
| 1286 | |
| 1287 | entries = DIV_ROUND_UP(min(small, large), display->cacheline_size); |
| 1288 | *display_wm = entries + display->guard_size; |
| 1289 | |
| 1290 | /* calculate the self-refresh watermark for display cursor */ |
| 1291 | entries = line_count * pixel_size * 64; |
| 1292 | entries = DIV_ROUND_UP(entries, cursor->cacheline_size); |
| 1293 | *cursor_wm = entries + cursor->guard_size; |
| 1294 | |
| 1295 | return g4x_check_srwm(dev, |
| 1296 | *display_wm, *cursor_wm, |
| 1297 | display, cursor); |
| 1298 | } |
| 1299 | |
| 1300 | static bool vlv_compute_drain_latency(struct drm_device *dev, |
| 1301 | int plane, |
| 1302 | int *plane_prec_mult, |
| 1303 | int *plane_dl, |
| 1304 | int *cursor_prec_mult, |
| 1305 | int *cursor_dl) |
| 1306 | { |
| 1307 | struct drm_crtc *crtc; |
| 1308 | int clock, pixel_size; |
| 1309 | int entries; |
| 1310 | |
| 1311 | crtc = intel_get_crtc_for_plane(dev, plane); |
Chris Wilson | 3490ea5 | 2013-01-07 10:11:40 +0000 | [diff] [blame] | 1312 | if (!intel_crtc_active(crtc)) |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1313 | return false; |
| 1314 | |
Ville Syrjälä | 4fe8590 | 2013-09-04 18:25:22 +0300 | [diff] [blame^] | 1315 | clock = to_intel_crtc(crtc)->config.adjusted_mode.clock; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1316 | pixel_size = crtc->fb->bits_per_pixel / 8; /* BPP */ |
| 1317 | |
| 1318 | entries = (clock / 1000) * pixel_size; |
| 1319 | *plane_prec_mult = (entries > 256) ? |
| 1320 | DRAIN_LATENCY_PRECISION_32 : DRAIN_LATENCY_PRECISION_16; |
| 1321 | *plane_dl = (64 * (*plane_prec_mult) * 4) / ((clock / 1000) * |
| 1322 | pixel_size); |
| 1323 | |
| 1324 | entries = (clock / 1000) * 4; /* BPP is always 4 for cursor */ |
| 1325 | *cursor_prec_mult = (entries > 256) ? |
| 1326 | DRAIN_LATENCY_PRECISION_32 : DRAIN_LATENCY_PRECISION_16; |
| 1327 | *cursor_dl = (64 * (*cursor_prec_mult) * 4) / ((clock / 1000) * 4); |
| 1328 | |
| 1329 | return true; |
| 1330 | } |
| 1331 | |
| 1332 | /* |
| 1333 | * Update drain latency registers of memory arbiter |
| 1334 | * |
| 1335 | * Valleyview SoC has a new memory arbiter and needs drain latency registers |
| 1336 | * to be programmed. Each plane has a drain latency multiplier and a drain |
| 1337 | * latency value. |
| 1338 | */ |
| 1339 | |
| 1340 | static void vlv_update_drain_latency(struct drm_device *dev) |
| 1341 | { |
| 1342 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1343 | int planea_prec, planea_dl, planeb_prec, planeb_dl; |
| 1344 | int cursora_prec, cursora_dl, cursorb_prec, cursorb_dl; |
| 1345 | int plane_prec_mult, cursor_prec_mult; /* Precision multiplier is |
| 1346 | either 16 or 32 */ |
| 1347 | |
| 1348 | /* For plane A, Cursor A */ |
| 1349 | if (vlv_compute_drain_latency(dev, 0, &plane_prec_mult, &planea_dl, |
| 1350 | &cursor_prec_mult, &cursora_dl)) { |
| 1351 | cursora_prec = (cursor_prec_mult == DRAIN_LATENCY_PRECISION_32) ? |
| 1352 | DDL_CURSORA_PRECISION_32 : DDL_CURSORA_PRECISION_16; |
| 1353 | planea_prec = (plane_prec_mult == DRAIN_LATENCY_PRECISION_32) ? |
| 1354 | DDL_PLANEA_PRECISION_32 : DDL_PLANEA_PRECISION_16; |
| 1355 | |
| 1356 | I915_WRITE(VLV_DDL1, cursora_prec | |
| 1357 | (cursora_dl << DDL_CURSORA_SHIFT) | |
| 1358 | planea_prec | planea_dl); |
| 1359 | } |
| 1360 | |
| 1361 | /* For plane B, Cursor B */ |
| 1362 | if (vlv_compute_drain_latency(dev, 1, &plane_prec_mult, &planeb_dl, |
| 1363 | &cursor_prec_mult, &cursorb_dl)) { |
| 1364 | cursorb_prec = (cursor_prec_mult == DRAIN_LATENCY_PRECISION_32) ? |
| 1365 | DDL_CURSORB_PRECISION_32 : DDL_CURSORB_PRECISION_16; |
| 1366 | planeb_prec = (plane_prec_mult == DRAIN_LATENCY_PRECISION_32) ? |
| 1367 | DDL_PLANEB_PRECISION_32 : DDL_PLANEB_PRECISION_16; |
| 1368 | |
| 1369 | I915_WRITE(VLV_DDL2, cursorb_prec | |
| 1370 | (cursorb_dl << DDL_CURSORB_SHIFT) | |
| 1371 | planeb_prec | planeb_dl); |
| 1372 | } |
| 1373 | } |
| 1374 | |
| 1375 | #define single_plane_enabled(mask) is_power_of_2(mask) |
| 1376 | |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 1377 | static void valleyview_update_wm(struct drm_crtc *crtc) |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1378 | { |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 1379 | struct drm_device *dev = crtc->dev; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1380 | static const int sr_latency_ns = 12000; |
| 1381 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1382 | int planea_wm, planeb_wm, cursora_wm, cursorb_wm; |
| 1383 | int plane_sr, cursor_sr; |
Chris Wilson | af6c457 | 2012-12-11 12:01:43 +0000 | [diff] [blame] | 1384 | int ignore_plane_sr, ignore_cursor_sr; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1385 | unsigned int enabled = 0; |
| 1386 | |
| 1387 | vlv_update_drain_latency(dev); |
| 1388 | |
Ville Syrjälä | 51cea1f | 2013-03-21 13:10:44 +0200 | [diff] [blame] | 1389 | if (g4x_compute_wm0(dev, PIPE_A, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1390 | &valleyview_wm_info, latency_ns, |
| 1391 | &valleyview_cursor_wm_info, latency_ns, |
| 1392 | &planea_wm, &cursora_wm)) |
Ville Syrjälä | 51cea1f | 2013-03-21 13:10:44 +0200 | [diff] [blame] | 1393 | enabled |= 1 << PIPE_A; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1394 | |
Ville Syrjälä | 51cea1f | 2013-03-21 13:10:44 +0200 | [diff] [blame] | 1395 | if (g4x_compute_wm0(dev, PIPE_B, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1396 | &valleyview_wm_info, latency_ns, |
| 1397 | &valleyview_cursor_wm_info, latency_ns, |
| 1398 | &planeb_wm, &cursorb_wm)) |
Ville Syrjälä | 51cea1f | 2013-03-21 13:10:44 +0200 | [diff] [blame] | 1399 | enabled |= 1 << PIPE_B; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1400 | |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1401 | if (single_plane_enabled(enabled) && |
| 1402 | g4x_compute_srwm(dev, ffs(enabled) - 1, |
| 1403 | sr_latency_ns, |
| 1404 | &valleyview_wm_info, |
| 1405 | &valleyview_cursor_wm_info, |
Chris Wilson | af6c457 | 2012-12-11 12:01:43 +0000 | [diff] [blame] | 1406 | &plane_sr, &ignore_cursor_sr) && |
| 1407 | g4x_compute_srwm(dev, ffs(enabled) - 1, |
| 1408 | 2*sr_latency_ns, |
| 1409 | &valleyview_wm_info, |
| 1410 | &valleyview_cursor_wm_info, |
Chris Wilson | 52bd02d | 2012-12-07 10:43:24 +0000 | [diff] [blame] | 1411 | &ignore_plane_sr, &cursor_sr)) { |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1412 | I915_WRITE(FW_BLC_SELF_VLV, FW_CSPWRDWNEN); |
Chris Wilson | 52bd02d | 2012-12-07 10:43:24 +0000 | [diff] [blame] | 1413 | } else { |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1414 | I915_WRITE(FW_BLC_SELF_VLV, |
| 1415 | I915_READ(FW_BLC_SELF_VLV) & ~FW_CSPWRDWNEN); |
Chris Wilson | 52bd02d | 2012-12-07 10:43:24 +0000 | [diff] [blame] | 1416 | plane_sr = cursor_sr = 0; |
| 1417 | } |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1418 | |
| 1419 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: plane=%d, cursor=%d, B: plane=%d, cursor=%d, SR: plane=%d, cursor=%d\n", |
| 1420 | planea_wm, cursora_wm, |
| 1421 | planeb_wm, cursorb_wm, |
| 1422 | plane_sr, cursor_sr); |
| 1423 | |
| 1424 | I915_WRITE(DSPFW1, |
| 1425 | (plane_sr << DSPFW_SR_SHIFT) | |
| 1426 | (cursorb_wm << DSPFW_CURSORB_SHIFT) | |
| 1427 | (planeb_wm << DSPFW_PLANEB_SHIFT) | |
| 1428 | planea_wm); |
| 1429 | I915_WRITE(DSPFW2, |
Chris Wilson | 8c919b2 | 2012-12-04 16:33:19 +0000 | [diff] [blame] | 1430 | (I915_READ(DSPFW2) & ~DSPFW_CURSORA_MASK) | |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1431 | (cursora_wm << DSPFW_CURSORA_SHIFT)); |
| 1432 | I915_WRITE(DSPFW3, |
Chris Wilson | 8c919b2 | 2012-12-04 16:33:19 +0000 | [diff] [blame] | 1433 | (I915_READ(DSPFW3) & ~DSPFW_CURSOR_SR_MASK) | |
| 1434 | (cursor_sr << DSPFW_CURSOR_SR_SHIFT)); |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1435 | } |
| 1436 | |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 1437 | static void g4x_update_wm(struct drm_crtc *crtc) |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1438 | { |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 1439 | struct drm_device *dev = crtc->dev; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1440 | static const int sr_latency_ns = 12000; |
| 1441 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1442 | int planea_wm, planeb_wm, cursora_wm, cursorb_wm; |
| 1443 | int plane_sr, cursor_sr; |
| 1444 | unsigned int enabled = 0; |
| 1445 | |
Ville Syrjälä | 51cea1f | 2013-03-21 13:10:44 +0200 | [diff] [blame] | 1446 | if (g4x_compute_wm0(dev, PIPE_A, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1447 | &g4x_wm_info, latency_ns, |
| 1448 | &g4x_cursor_wm_info, latency_ns, |
| 1449 | &planea_wm, &cursora_wm)) |
Ville Syrjälä | 51cea1f | 2013-03-21 13:10:44 +0200 | [diff] [blame] | 1450 | enabled |= 1 << PIPE_A; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1451 | |
Ville Syrjälä | 51cea1f | 2013-03-21 13:10:44 +0200 | [diff] [blame] | 1452 | if (g4x_compute_wm0(dev, PIPE_B, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1453 | &g4x_wm_info, latency_ns, |
| 1454 | &g4x_cursor_wm_info, latency_ns, |
| 1455 | &planeb_wm, &cursorb_wm)) |
Ville Syrjälä | 51cea1f | 2013-03-21 13:10:44 +0200 | [diff] [blame] | 1456 | enabled |= 1 << PIPE_B; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1457 | |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1458 | if (single_plane_enabled(enabled) && |
| 1459 | g4x_compute_srwm(dev, ffs(enabled) - 1, |
| 1460 | sr_latency_ns, |
| 1461 | &g4x_wm_info, |
| 1462 | &g4x_cursor_wm_info, |
Chris Wilson | 52bd02d | 2012-12-07 10:43:24 +0000 | [diff] [blame] | 1463 | &plane_sr, &cursor_sr)) { |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1464 | I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN); |
Chris Wilson | 52bd02d | 2012-12-07 10:43:24 +0000 | [diff] [blame] | 1465 | } else { |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1466 | I915_WRITE(FW_BLC_SELF, |
| 1467 | I915_READ(FW_BLC_SELF) & ~FW_BLC_SELF_EN); |
Chris Wilson | 52bd02d | 2012-12-07 10:43:24 +0000 | [diff] [blame] | 1468 | plane_sr = cursor_sr = 0; |
| 1469 | } |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1470 | |
| 1471 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: plane=%d, cursor=%d, B: plane=%d, cursor=%d, SR: plane=%d, cursor=%d\n", |
| 1472 | planea_wm, cursora_wm, |
| 1473 | planeb_wm, cursorb_wm, |
| 1474 | plane_sr, cursor_sr); |
| 1475 | |
| 1476 | I915_WRITE(DSPFW1, |
| 1477 | (plane_sr << DSPFW_SR_SHIFT) | |
| 1478 | (cursorb_wm << DSPFW_CURSORB_SHIFT) | |
| 1479 | (planeb_wm << DSPFW_PLANEB_SHIFT) | |
| 1480 | planea_wm); |
| 1481 | I915_WRITE(DSPFW2, |
Chris Wilson | 8c919b2 | 2012-12-04 16:33:19 +0000 | [diff] [blame] | 1482 | (I915_READ(DSPFW2) & ~DSPFW_CURSORA_MASK) | |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1483 | (cursora_wm << DSPFW_CURSORA_SHIFT)); |
| 1484 | /* HPLL off in SR has some issues on G4x... disable it */ |
| 1485 | I915_WRITE(DSPFW3, |
Chris Wilson | 8c919b2 | 2012-12-04 16:33:19 +0000 | [diff] [blame] | 1486 | (I915_READ(DSPFW3) & ~(DSPFW_HPLL_SR_EN | DSPFW_CURSOR_SR_MASK)) | |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1487 | (cursor_sr << DSPFW_CURSOR_SR_SHIFT)); |
| 1488 | } |
| 1489 | |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 1490 | static void i965_update_wm(struct drm_crtc *unused_crtc) |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1491 | { |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 1492 | struct drm_device *dev = unused_crtc->dev; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1493 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1494 | struct drm_crtc *crtc; |
| 1495 | int srwm = 1; |
| 1496 | int cursor_sr = 16; |
| 1497 | |
| 1498 | /* Calc sr entries for one plane configs */ |
| 1499 | crtc = single_enabled_crtc(dev); |
| 1500 | if (crtc) { |
| 1501 | /* self-refresh has much higher latency */ |
| 1502 | static const int sr_latency_ns = 12000; |
Ville Syrjälä | 4fe8590 | 2013-09-04 18:25:22 +0300 | [diff] [blame^] | 1503 | const struct drm_display_mode *adjusted_mode = |
| 1504 | &to_intel_crtc(crtc)->config.adjusted_mode; |
| 1505 | int clock = adjusted_mode->clock; |
| 1506 | int htotal = adjusted_mode->htotal; |
| 1507 | int hdisplay = to_intel_crtc(crtc)->config.requested_mode.hdisplay; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1508 | int pixel_size = crtc->fb->bits_per_pixel / 8; |
| 1509 | unsigned long line_time_us; |
| 1510 | int entries; |
| 1511 | |
| 1512 | line_time_us = ((htotal * 1000) / clock); |
| 1513 | |
| 1514 | /* Use ns/us then divide to preserve precision */ |
| 1515 | entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) * |
| 1516 | pixel_size * hdisplay; |
| 1517 | entries = DIV_ROUND_UP(entries, I915_FIFO_LINE_SIZE); |
| 1518 | srwm = I965_FIFO_SIZE - entries; |
| 1519 | if (srwm < 0) |
| 1520 | srwm = 1; |
| 1521 | srwm &= 0x1ff; |
| 1522 | DRM_DEBUG_KMS("self-refresh entries: %d, wm: %d\n", |
| 1523 | entries, srwm); |
| 1524 | |
| 1525 | entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) * |
| 1526 | pixel_size * 64; |
| 1527 | entries = DIV_ROUND_UP(entries, |
| 1528 | i965_cursor_wm_info.cacheline_size); |
| 1529 | cursor_sr = i965_cursor_wm_info.fifo_size - |
| 1530 | (entries + i965_cursor_wm_info.guard_size); |
| 1531 | |
| 1532 | if (cursor_sr > i965_cursor_wm_info.max_wm) |
| 1533 | cursor_sr = i965_cursor_wm_info.max_wm; |
| 1534 | |
| 1535 | DRM_DEBUG_KMS("self-refresh watermark: display plane %d " |
| 1536 | "cursor %d\n", srwm, cursor_sr); |
| 1537 | |
| 1538 | if (IS_CRESTLINE(dev)) |
| 1539 | I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN); |
| 1540 | } else { |
| 1541 | /* Turn off self refresh if both pipes are enabled */ |
| 1542 | if (IS_CRESTLINE(dev)) |
| 1543 | I915_WRITE(FW_BLC_SELF, I915_READ(FW_BLC_SELF) |
| 1544 | & ~FW_BLC_SELF_EN); |
| 1545 | } |
| 1546 | |
| 1547 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: 8, B: 8, C: 8, SR %d\n", |
| 1548 | srwm); |
| 1549 | |
| 1550 | /* 965 has limitations... */ |
| 1551 | I915_WRITE(DSPFW1, (srwm << DSPFW_SR_SHIFT) | |
| 1552 | (8 << 16) | (8 << 8) | (8 << 0)); |
| 1553 | I915_WRITE(DSPFW2, (8 << 8) | (8 << 0)); |
| 1554 | /* update cursor SR watermark */ |
| 1555 | I915_WRITE(DSPFW3, (cursor_sr << DSPFW_CURSOR_SR_SHIFT)); |
| 1556 | } |
| 1557 | |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 1558 | static void i9xx_update_wm(struct drm_crtc *unused_crtc) |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1559 | { |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 1560 | struct drm_device *dev = unused_crtc->dev; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1561 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1562 | const struct intel_watermark_params *wm_info; |
| 1563 | uint32_t fwater_lo; |
| 1564 | uint32_t fwater_hi; |
| 1565 | int cwm, srwm = 1; |
| 1566 | int fifo_size; |
| 1567 | int planea_wm, planeb_wm; |
| 1568 | struct drm_crtc *crtc, *enabled = NULL; |
| 1569 | |
| 1570 | if (IS_I945GM(dev)) |
| 1571 | wm_info = &i945_wm_info; |
| 1572 | else if (!IS_GEN2(dev)) |
| 1573 | wm_info = &i915_wm_info; |
| 1574 | else |
| 1575 | wm_info = &i855_wm_info; |
| 1576 | |
| 1577 | fifo_size = dev_priv->display.get_fifo_size(dev, 0); |
| 1578 | crtc = intel_get_crtc_for_plane(dev, 0); |
Chris Wilson | 3490ea5 | 2013-01-07 10:11:40 +0000 | [diff] [blame] | 1579 | if (intel_crtc_active(crtc)) { |
Chris Wilson | b9e0bda | 2012-10-22 12:32:15 +0100 | [diff] [blame] | 1580 | int cpp = crtc->fb->bits_per_pixel / 8; |
| 1581 | if (IS_GEN2(dev)) |
| 1582 | cpp = 4; |
| 1583 | |
Ville Syrjälä | 4fe8590 | 2013-09-04 18:25:22 +0300 | [diff] [blame^] | 1584 | planea_wm = intel_calculate_wm(to_intel_crtc(crtc)->config.adjusted_mode.clock, |
Chris Wilson | b9e0bda | 2012-10-22 12:32:15 +0100 | [diff] [blame] | 1585 | wm_info, fifo_size, cpp, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1586 | latency_ns); |
| 1587 | enabled = crtc; |
| 1588 | } else |
| 1589 | planea_wm = fifo_size - wm_info->guard_size; |
| 1590 | |
| 1591 | fifo_size = dev_priv->display.get_fifo_size(dev, 1); |
| 1592 | crtc = intel_get_crtc_for_plane(dev, 1); |
Chris Wilson | 3490ea5 | 2013-01-07 10:11:40 +0000 | [diff] [blame] | 1593 | if (intel_crtc_active(crtc)) { |
Chris Wilson | b9e0bda | 2012-10-22 12:32:15 +0100 | [diff] [blame] | 1594 | int cpp = crtc->fb->bits_per_pixel / 8; |
| 1595 | if (IS_GEN2(dev)) |
| 1596 | cpp = 4; |
| 1597 | |
Ville Syrjälä | 4fe8590 | 2013-09-04 18:25:22 +0300 | [diff] [blame^] | 1598 | planeb_wm = intel_calculate_wm(to_intel_crtc(crtc)->config.adjusted_mode.clock, |
Chris Wilson | b9e0bda | 2012-10-22 12:32:15 +0100 | [diff] [blame] | 1599 | wm_info, fifo_size, cpp, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1600 | latency_ns); |
| 1601 | if (enabled == NULL) |
| 1602 | enabled = crtc; |
| 1603 | else |
| 1604 | enabled = NULL; |
| 1605 | } else |
| 1606 | planeb_wm = fifo_size - wm_info->guard_size; |
| 1607 | |
| 1608 | DRM_DEBUG_KMS("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm); |
| 1609 | |
| 1610 | /* |
| 1611 | * Overlay gets an aggressive default since video jitter is bad. |
| 1612 | */ |
| 1613 | cwm = 2; |
| 1614 | |
| 1615 | /* Play safe and disable self-refresh before adjusting watermarks. */ |
| 1616 | if (IS_I945G(dev) || IS_I945GM(dev)) |
| 1617 | I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN_MASK | 0); |
| 1618 | else if (IS_I915GM(dev)) |
| 1619 | I915_WRITE(INSTPM, I915_READ(INSTPM) & ~INSTPM_SELF_EN); |
| 1620 | |
| 1621 | /* Calc sr entries for one plane configs */ |
| 1622 | if (HAS_FW_BLC(dev) && enabled) { |
| 1623 | /* self-refresh has much higher latency */ |
| 1624 | static const int sr_latency_ns = 6000; |
Ville Syrjälä | 4fe8590 | 2013-09-04 18:25:22 +0300 | [diff] [blame^] | 1625 | const struct drm_display_mode *adjusted_mode = |
| 1626 | &to_intel_crtc(enabled)->config.adjusted_mode; |
| 1627 | int clock = adjusted_mode->clock; |
| 1628 | int htotal = adjusted_mode->htotal; |
| 1629 | int hdisplay = to_intel_crtc(crtc)->config.requested_mode.hdisplay; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1630 | int pixel_size = enabled->fb->bits_per_pixel / 8; |
| 1631 | unsigned long line_time_us; |
| 1632 | int entries; |
| 1633 | |
| 1634 | line_time_us = (htotal * 1000) / clock; |
| 1635 | |
| 1636 | /* Use ns/us then divide to preserve precision */ |
| 1637 | entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) * |
| 1638 | pixel_size * hdisplay; |
| 1639 | entries = DIV_ROUND_UP(entries, wm_info->cacheline_size); |
| 1640 | DRM_DEBUG_KMS("self-refresh entries: %d\n", entries); |
| 1641 | srwm = wm_info->fifo_size - entries; |
| 1642 | if (srwm < 0) |
| 1643 | srwm = 1; |
| 1644 | |
| 1645 | if (IS_I945G(dev) || IS_I945GM(dev)) |
| 1646 | I915_WRITE(FW_BLC_SELF, |
| 1647 | FW_BLC_SELF_FIFO_MASK | (srwm & 0xff)); |
| 1648 | else if (IS_I915GM(dev)) |
| 1649 | I915_WRITE(FW_BLC_SELF, srwm & 0x3f); |
| 1650 | } |
| 1651 | |
| 1652 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n", |
| 1653 | planea_wm, planeb_wm, cwm, srwm); |
| 1654 | |
| 1655 | fwater_lo = ((planeb_wm & 0x3f) << 16) | (planea_wm & 0x3f); |
| 1656 | fwater_hi = (cwm & 0x1f); |
| 1657 | |
| 1658 | /* Set request length to 8 cachelines per fetch */ |
| 1659 | fwater_lo = fwater_lo | (1 << 24) | (1 << 8); |
| 1660 | fwater_hi = fwater_hi | (1 << 8); |
| 1661 | |
| 1662 | I915_WRITE(FW_BLC, fwater_lo); |
| 1663 | I915_WRITE(FW_BLC2, fwater_hi); |
| 1664 | |
| 1665 | if (HAS_FW_BLC(dev)) { |
| 1666 | if (enabled) { |
| 1667 | if (IS_I945G(dev) || IS_I945GM(dev)) |
| 1668 | I915_WRITE(FW_BLC_SELF, |
| 1669 | FW_BLC_SELF_EN_MASK | FW_BLC_SELF_EN); |
| 1670 | else if (IS_I915GM(dev)) |
| 1671 | I915_WRITE(INSTPM, I915_READ(INSTPM) | INSTPM_SELF_EN); |
| 1672 | DRM_DEBUG_KMS("memory self refresh enabled\n"); |
| 1673 | } else |
| 1674 | DRM_DEBUG_KMS("memory self refresh disabled\n"); |
| 1675 | } |
| 1676 | } |
| 1677 | |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 1678 | static void i830_update_wm(struct drm_crtc *unused_crtc) |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1679 | { |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 1680 | struct drm_device *dev = unused_crtc->dev; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1681 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1682 | struct drm_crtc *crtc; |
| 1683 | uint32_t fwater_lo; |
| 1684 | int planea_wm; |
| 1685 | |
| 1686 | crtc = single_enabled_crtc(dev); |
| 1687 | if (crtc == NULL) |
| 1688 | return; |
| 1689 | |
Ville Syrjälä | 4fe8590 | 2013-09-04 18:25:22 +0300 | [diff] [blame^] | 1690 | planea_wm = intel_calculate_wm(to_intel_crtc(crtc)->config.adjusted_mode.clock, |
| 1691 | &i830_wm_info, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1692 | dev_priv->display.get_fifo_size(dev, 0), |
Chris Wilson | b9e0bda | 2012-10-22 12:32:15 +0100 | [diff] [blame] | 1693 | 4, latency_ns); |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1694 | fwater_lo = I915_READ(FW_BLC) & ~0xfff; |
| 1695 | fwater_lo |= (3<<8) | planea_wm; |
| 1696 | |
| 1697 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d\n", planea_wm); |
| 1698 | |
| 1699 | I915_WRITE(FW_BLC, fwater_lo); |
| 1700 | } |
| 1701 | |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1702 | /* |
| 1703 | * Check the wm result. |
| 1704 | * |
| 1705 | * If any calculated watermark values is larger than the maximum value that |
| 1706 | * can be programmed into the associated watermark register, that watermark |
| 1707 | * must be disabled. |
| 1708 | */ |
| 1709 | static bool ironlake_check_srwm(struct drm_device *dev, int level, |
| 1710 | int fbc_wm, int display_wm, int cursor_wm, |
| 1711 | const struct intel_watermark_params *display, |
| 1712 | const struct intel_watermark_params *cursor) |
| 1713 | { |
| 1714 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1715 | |
| 1716 | DRM_DEBUG_KMS("watermark %d: display plane %d, fbc lines %d," |
| 1717 | " cursor %d\n", level, display_wm, fbc_wm, cursor_wm); |
| 1718 | |
| 1719 | if (fbc_wm > SNB_FBC_MAX_SRWM) { |
| 1720 | DRM_DEBUG_KMS("fbc watermark(%d) is too large(%d), disabling wm%d+\n", |
| 1721 | fbc_wm, SNB_FBC_MAX_SRWM, level); |
| 1722 | |
| 1723 | /* fbc has it's own way to disable FBC WM */ |
| 1724 | I915_WRITE(DISP_ARB_CTL, |
| 1725 | I915_READ(DISP_ARB_CTL) | DISP_FBC_WM_DIS); |
| 1726 | return false; |
Ville Syrjälä | 615aaa5 | 2013-04-24 21:09:10 +0300 | [diff] [blame] | 1727 | } else if (INTEL_INFO(dev)->gen >= 6) { |
| 1728 | /* enable FBC WM (except on ILK, where it must remain off) */ |
| 1729 | I915_WRITE(DISP_ARB_CTL, |
| 1730 | I915_READ(DISP_ARB_CTL) & ~DISP_FBC_WM_DIS); |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1731 | } |
| 1732 | |
| 1733 | if (display_wm > display->max_wm) { |
| 1734 | DRM_DEBUG_KMS("display watermark(%d) is too large(%d), disabling wm%d+\n", |
| 1735 | display_wm, SNB_DISPLAY_MAX_SRWM, level); |
| 1736 | return false; |
| 1737 | } |
| 1738 | |
| 1739 | if (cursor_wm > cursor->max_wm) { |
| 1740 | DRM_DEBUG_KMS("cursor watermark(%d) is too large(%d), disabling wm%d+\n", |
| 1741 | cursor_wm, SNB_CURSOR_MAX_SRWM, level); |
| 1742 | return false; |
| 1743 | } |
| 1744 | |
| 1745 | if (!(fbc_wm || display_wm || cursor_wm)) { |
| 1746 | DRM_DEBUG_KMS("latency %d is 0, disabling wm%d+\n", level, level); |
| 1747 | return false; |
| 1748 | } |
| 1749 | |
| 1750 | return true; |
| 1751 | } |
| 1752 | |
| 1753 | /* |
| 1754 | * Compute watermark values of WM[1-3], |
| 1755 | */ |
| 1756 | static bool ironlake_compute_srwm(struct drm_device *dev, int level, int plane, |
| 1757 | int latency_ns, |
| 1758 | const struct intel_watermark_params *display, |
| 1759 | const struct intel_watermark_params *cursor, |
| 1760 | int *fbc_wm, int *display_wm, int *cursor_wm) |
| 1761 | { |
| 1762 | struct drm_crtc *crtc; |
Ville Syrjälä | 4fe8590 | 2013-09-04 18:25:22 +0300 | [diff] [blame^] | 1763 | const struct drm_display_mode *adjusted_mode; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1764 | unsigned long line_time_us; |
| 1765 | int hdisplay, htotal, pixel_size, clock; |
| 1766 | int line_count, line_size; |
| 1767 | int small, large; |
| 1768 | int entries; |
| 1769 | |
| 1770 | if (!latency_ns) { |
| 1771 | *fbc_wm = *display_wm = *cursor_wm = 0; |
| 1772 | return false; |
| 1773 | } |
| 1774 | |
| 1775 | crtc = intel_get_crtc_for_plane(dev, plane); |
Ville Syrjälä | 4fe8590 | 2013-09-04 18:25:22 +0300 | [diff] [blame^] | 1776 | adjusted_mode = &to_intel_crtc(crtc)->config.adjusted_mode; |
| 1777 | clock = adjusted_mode->clock; |
| 1778 | htotal = adjusted_mode->htotal; |
| 1779 | hdisplay = to_intel_crtc(crtc)->config.requested_mode.hdisplay; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1780 | pixel_size = crtc->fb->bits_per_pixel / 8; |
| 1781 | |
| 1782 | line_time_us = (htotal * 1000) / clock; |
| 1783 | line_count = (latency_ns / line_time_us + 1000) / 1000; |
| 1784 | line_size = hdisplay * pixel_size; |
| 1785 | |
| 1786 | /* Use the minimum of the small and large buffer method for primary */ |
| 1787 | small = ((clock * pixel_size / 1000) * latency_ns) / 1000; |
| 1788 | large = line_count * line_size; |
| 1789 | |
| 1790 | entries = DIV_ROUND_UP(min(small, large), display->cacheline_size); |
| 1791 | *display_wm = entries + display->guard_size; |
| 1792 | |
| 1793 | /* |
| 1794 | * Spec says: |
| 1795 | * FBC WM = ((Final Primary WM * 64) / number of bytes per line) + 2 |
| 1796 | */ |
| 1797 | *fbc_wm = DIV_ROUND_UP(*display_wm * 64, line_size) + 2; |
| 1798 | |
| 1799 | /* calculate the self-refresh watermark for display cursor */ |
| 1800 | entries = line_count * pixel_size * 64; |
| 1801 | entries = DIV_ROUND_UP(entries, cursor->cacheline_size); |
| 1802 | *cursor_wm = entries + cursor->guard_size; |
| 1803 | |
| 1804 | return ironlake_check_srwm(dev, level, |
| 1805 | *fbc_wm, *display_wm, *cursor_wm, |
| 1806 | display, cursor); |
| 1807 | } |
| 1808 | |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 1809 | static void ironlake_update_wm(struct drm_crtc *crtc) |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1810 | { |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 1811 | struct drm_device *dev = crtc->dev; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1812 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1813 | int fbc_wm, plane_wm, cursor_wm; |
| 1814 | unsigned int enabled; |
| 1815 | |
| 1816 | enabled = 0; |
Ville Syrjälä | 51cea1f | 2013-03-21 13:10:44 +0200 | [diff] [blame] | 1817 | if (g4x_compute_wm0(dev, PIPE_A, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1818 | &ironlake_display_wm_info, |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 1819 | dev_priv->wm.pri_latency[0] * 100, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1820 | &ironlake_cursor_wm_info, |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 1821 | dev_priv->wm.cur_latency[0] * 100, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1822 | &plane_wm, &cursor_wm)) { |
| 1823 | I915_WRITE(WM0_PIPEA_ILK, |
| 1824 | (plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm); |
| 1825 | DRM_DEBUG_KMS("FIFO watermarks For pipe A -" |
| 1826 | " plane %d, " "cursor: %d\n", |
| 1827 | plane_wm, cursor_wm); |
Ville Syrjälä | 51cea1f | 2013-03-21 13:10:44 +0200 | [diff] [blame] | 1828 | enabled |= 1 << PIPE_A; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1829 | } |
| 1830 | |
Ville Syrjälä | 51cea1f | 2013-03-21 13:10:44 +0200 | [diff] [blame] | 1831 | if (g4x_compute_wm0(dev, PIPE_B, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1832 | &ironlake_display_wm_info, |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 1833 | dev_priv->wm.pri_latency[0] * 100, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1834 | &ironlake_cursor_wm_info, |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 1835 | dev_priv->wm.cur_latency[0] * 100, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1836 | &plane_wm, &cursor_wm)) { |
| 1837 | I915_WRITE(WM0_PIPEB_ILK, |
| 1838 | (plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm); |
| 1839 | DRM_DEBUG_KMS("FIFO watermarks For pipe B -" |
| 1840 | " plane %d, cursor: %d\n", |
| 1841 | plane_wm, cursor_wm); |
Ville Syrjälä | 51cea1f | 2013-03-21 13:10:44 +0200 | [diff] [blame] | 1842 | enabled |= 1 << PIPE_B; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1843 | } |
| 1844 | |
| 1845 | /* |
| 1846 | * Calculate and update the self-refresh watermark only when one |
| 1847 | * display plane is used. |
| 1848 | */ |
| 1849 | I915_WRITE(WM3_LP_ILK, 0); |
| 1850 | I915_WRITE(WM2_LP_ILK, 0); |
| 1851 | I915_WRITE(WM1_LP_ILK, 0); |
| 1852 | |
| 1853 | if (!single_plane_enabled(enabled)) |
| 1854 | return; |
| 1855 | enabled = ffs(enabled) - 1; |
| 1856 | |
| 1857 | /* WM1 */ |
| 1858 | if (!ironlake_compute_srwm(dev, 1, enabled, |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 1859 | dev_priv->wm.pri_latency[1] * 500, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1860 | &ironlake_display_srwm_info, |
| 1861 | &ironlake_cursor_srwm_info, |
| 1862 | &fbc_wm, &plane_wm, &cursor_wm)) |
| 1863 | return; |
| 1864 | |
| 1865 | I915_WRITE(WM1_LP_ILK, |
| 1866 | WM1_LP_SR_EN | |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 1867 | (dev_priv->wm.pri_latency[1] << WM1_LP_LATENCY_SHIFT) | |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1868 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
| 1869 | (plane_wm << WM1_LP_SR_SHIFT) | |
| 1870 | cursor_wm); |
| 1871 | |
| 1872 | /* WM2 */ |
| 1873 | if (!ironlake_compute_srwm(dev, 2, enabled, |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 1874 | dev_priv->wm.pri_latency[2] * 500, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1875 | &ironlake_display_srwm_info, |
| 1876 | &ironlake_cursor_srwm_info, |
| 1877 | &fbc_wm, &plane_wm, &cursor_wm)) |
| 1878 | return; |
| 1879 | |
| 1880 | I915_WRITE(WM2_LP_ILK, |
| 1881 | WM2_LP_EN | |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 1882 | (dev_priv->wm.pri_latency[2] << WM1_LP_LATENCY_SHIFT) | |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1883 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
| 1884 | (plane_wm << WM1_LP_SR_SHIFT) | |
| 1885 | cursor_wm); |
| 1886 | |
| 1887 | /* |
| 1888 | * WM3 is unsupported on ILK, probably because we don't have latency |
| 1889 | * data for that power state |
| 1890 | */ |
| 1891 | } |
| 1892 | |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 1893 | static void sandybridge_update_wm(struct drm_crtc *crtc) |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1894 | { |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 1895 | struct drm_device *dev = crtc->dev; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1896 | struct drm_i915_private *dev_priv = dev->dev_private; |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 1897 | int latency = dev_priv->wm.pri_latency[0] * 100; /* In unit 0.1us */ |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1898 | u32 val; |
| 1899 | int fbc_wm, plane_wm, cursor_wm; |
| 1900 | unsigned int enabled; |
| 1901 | |
| 1902 | enabled = 0; |
Ville Syrjälä | 51cea1f | 2013-03-21 13:10:44 +0200 | [diff] [blame] | 1903 | if (g4x_compute_wm0(dev, PIPE_A, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1904 | &sandybridge_display_wm_info, latency, |
| 1905 | &sandybridge_cursor_wm_info, latency, |
| 1906 | &plane_wm, &cursor_wm)) { |
| 1907 | val = I915_READ(WM0_PIPEA_ILK); |
| 1908 | val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK); |
| 1909 | I915_WRITE(WM0_PIPEA_ILK, val | |
| 1910 | ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm)); |
| 1911 | DRM_DEBUG_KMS("FIFO watermarks For pipe A -" |
| 1912 | " plane %d, " "cursor: %d\n", |
| 1913 | plane_wm, cursor_wm); |
Ville Syrjälä | 51cea1f | 2013-03-21 13:10:44 +0200 | [diff] [blame] | 1914 | enabled |= 1 << PIPE_A; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1915 | } |
| 1916 | |
Ville Syrjälä | 51cea1f | 2013-03-21 13:10:44 +0200 | [diff] [blame] | 1917 | if (g4x_compute_wm0(dev, PIPE_B, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1918 | &sandybridge_display_wm_info, latency, |
| 1919 | &sandybridge_cursor_wm_info, latency, |
| 1920 | &plane_wm, &cursor_wm)) { |
| 1921 | val = I915_READ(WM0_PIPEB_ILK); |
| 1922 | val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK); |
| 1923 | I915_WRITE(WM0_PIPEB_ILK, val | |
| 1924 | ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm)); |
| 1925 | DRM_DEBUG_KMS("FIFO watermarks For pipe B -" |
| 1926 | " plane %d, cursor: %d\n", |
| 1927 | plane_wm, cursor_wm); |
Ville Syrjälä | 51cea1f | 2013-03-21 13:10:44 +0200 | [diff] [blame] | 1928 | enabled |= 1 << PIPE_B; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1929 | } |
| 1930 | |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1931 | /* |
| 1932 | * Calculate and update the self-refresh watermark only when one |
| 1933 | * display plane is used. |
| 1934 | * |
| 1935 | * SNB support 3 levels of watermark. |
| 1936 | * |
| 1937 | * WM1/WM2/WM2 watermarks have to be enabled in the ascending order, |
| 1938 | * and disabled in the descending order |
| 1939 | * |
| 1940 | */ |
| 1941 | I915_WRITE(WM3_LP_ILK, 0); |
| 1942 | I915_WRITE(WM2_LP_ILK, 0); |
| 1943 | I915_WRITE(WM1_LP_ILK, 0); |
| 1944 | |
| 1945 | if (!single_plane_enabled(enabled) || |
| 1946 | dev_priv->sprite_scaling_enabled) |
| 1947 | return; |
| 1948 | enabled = ffs(enabled) - 1; |
| 1949 | |
| 1950 | /* WM1 */ |
| 1951 | if (!ironlake_compute_srwm(dev, 1, enabled, |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 1952 | dev_priv->wm.pri_latency[1] * 500, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1953 | &sandybridge_display_srwm_info, |
| 1954 | &sandybridge_cursor_srwm_info, |
| 1955 | &fbc_wm, &plane_wm, &cursor_wm)) |
| 1956 | return; |
| 1957 | |
| 1958 | I915_WRITE(WM1_LP_ILK, |
| 1959 | WM1_LP_SR_EN | |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 1960 | (dev_priv->wm.pri_latency[1] << WM1_LP_LATENCY_SHIFT) | |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1961 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
| 1962 | (plane_wm << WM1_LP_SR_SHIFT) | |
| 1963 | cursor_wm); |
| 1964 | |
| 1965 | /* WM2 */ |
| 1966 | if (!ironlake_compute_srwm(dev, 2, enabled, |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 1967 | dev_priv->wm.pri_latency[2] * 500, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1968 | &sandybridge_display_srwm_info, |
| 1969 | &sandybridge_cursor_srwm_info, |
| 1970 | &fbc_wm, &plane_wm, &cursor_wm)) |
| 1971 | return; |
| 1972 | |
| 1973 | I915_WRITE(WM2_LP_ILK, |
| 1974 | WM2_LP_EN | |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 1975 | (dev_priv->wm.pri_latency[2] << WM1_LP_LATENCY_SHIFT) | |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1976 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
| 1977 | (plane_wm << WM1_LP_SR_SHIFT) | |
| 1978 | cursor_wm); |
| 1979 | |
| 1980 | /* WM3 */ |
| 1981 | if (!ironlake_compute_srwm(dev, 3, enabled, |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 1982 | dev_priv->wm.pri_latency[3] * 500, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1983 | &sandybridge_display_srwm_info, |
| 1984 | &sandybridge_cursor_srwm_info, |
| 1985 | &fbc_wm, &plane_wm, &cursor_wm)) |
| 1986 | return; |
| 1987 | |
| 1988 | I915_WRITE(WM3_LP_ILK, |
| 1989 | WM3_LP_EN | |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 1990 | (dev_priv->wm.pri_latency[3] << WM1_LP_LATENCY_SHIFT) | |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 1991 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
| 1992 | (plane_wm << WM1_LP_SR_SHIFT) | |
| 1993 | cursor_wm); |
| 1994 | } |
| 1995 | |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 1996 | static void ivybridge_update_wm(struct drm_crtc *crtc) |
Chris Wilson | c43d018 | 2012-12-11 12:01:42 +0000 | [diff] [blame] | 1997 | { |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 1998 | struct drm_device *dev = crtc->dev; |
Chris Wilson | c43d018 | 2012-12-11 12:01:42 +0000 | [diff] [blame] | 1999 | struct drm_i915_private *dev_priv = dev->dev_private; |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 2000 | int latency = dev_priv->wm.pri_latency[0] * 100; /* In unit 0.1us */ |
Chris Wilson | c43d018 | 2012-12-11 12:01:42 +0000 | [diff] [blame] | 2001 | u32 val; |
| 2002 | int fbc_wm, plane_wm, cursor_wm; |
| 2003 | int ignore_fbc_wm, ignore_plane_wm, ignore_cursor_wm; |
| 2004 | unsigned int enabled; |
| 2005 | |
| 2006 | enabled = 0; |
Ville Syrjälä | 51cea1f | 2013-03-21 13:10:44 +0200 | [diff] [blame] | 2007 | if (g4x_compute_wm0(dev, PIPE_A, |
Chris Wilson | c43d018 | 2012-12-11 12:01:42 +0000 | [diff] [blame] | 2008 | &sandybridge_display_wm_info, latency, |
| 2009 | &sandybridge_cursor_wm_info, latency, |
| 2010 | &plane_wm, &cursor_wm)) { |
| 2011 | val = I915_READ(WM0_PIPEA_ILK); |
| 2012 | val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK); |
| 2013 | I915_WRITE(WM0_PIPEA_ILK, val | |
| 2014 | ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm)); |
| 2015 | DRM_DEBUG_KMS("FIFO watermarks For pipe A -" |
| 2016 | " plane %d, " "cursor: %d\n", |
| 2017 | plane_wm, cursor_wm); |
Ville Syrjälä | 51cea1f | 2013-03-21 13:10:44 +0200 | [diff] [blame] | 2018 | enabled |= 1 << PIPE_A; |
Chris Wilson | c43d018 | 2012-12-11 12:01:42 +0000 | [diff] [blame] | 2019 | } |
| 2020 | |
Ville Syrjälä | 51cea1f | 2013-03-21 13:10:44 +0200 | [diff] [blame] | 2021 | if (g4x_compute_wm0(dev, PIPE_B, |
Chris Wilson | c43d018 | 2012-12-11 12:01:42 +0000 | [diff] [blame] | 2022 | &sandybridge_display_wm_info, latency, |
| 2023 | &sandybridge_cursor_wm_info, latency, |
| 2024 | &plane_wm, &cursor_wm)) { |
| 2025 | val = I915_READ(WM0_PIPEB_ILK); |
| 2026 | val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK); |
| 2027 | I915_WRITE(WM0_PIPEB_ILK, val | |
| 2028 | ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm)); |
| 2029 | DRM_DEBUG_KMS("FIFO watermarks For pipe B -" |
| 2030 | " plane %d, cursor: %d\n", |
| 2031 | plane_wm, cursor_wm); |
Ville Syrjälä | 51cea1f | 2013-03-21 13:10:44 +0200 | [diff] [blame] | 2032 | enabled |= 1 << PIPE_B; |
Chris Wilson | c43d018 | 2012-12-11 12:01:42 +0000 | [diff] [blame] | 2033 | } |
| 2034 | |
Ville Syrjälä | 51cea1f | 2013-03-21 13:10:44 +0200 | [diff] [blame] | 2035 | if (g4x_compute_wm0(dev, PIPE_C, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 2036 | &sandybridge_display_wm_info, latency, |
| 2037 | &sandybridge_cursor_wm_info, latency, |
| 2038 | &plane_wm, &cursor_wm)) { |
| 2039 | val = I915_READ(WM0_PIPEC_IVB); |
| 2040 | val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK); |
| 2041 | I915_WRITE(WM0_PIPEC_IVB, val | |
| 2042 | ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm)); |
| 2043 | DRM_DEBUG_KMS("FIFO watermarks For pipe C -" |
| 2044 | " plane %d, cursor: %d\n", |
| 2045 | plane_wm, cursor_wm); |
Ville Syrjälä | 51cea1f | 2013-03-21 13:10:44 +0200 | [diff] [blame] | 2046 | enabled |= 1 << PIPE_C; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 2047 | } |
| 2048 | |
| 2049 | /* |
| 2050 | * Calculate and update the self-refresh watermark only when one |
| 2051 | * display plane is used. |
| 2052 | * |
| 2053 | * SNB support 3 levels of watermark. |
| 2054 | * |
| 2055 | * WM1/WM2/WM2 watermarks have to be enabled in the ascending order, |
| 2056 | * and disabled in the descending order |
| 2057 | * |
| 2058 | */ |
| 2059 | I915_WRITE(WM3_LP_ILK, 0); |
| 2060 | I915_WRITE(WM2_LP_ILK, 0); |
| 2061 | I915_WRITE(WM1_LP_ILK, 0); |
| 2062 | |
| 2063 | if (!single_plane_enabled(enabled) || |
| 2064 | dev_priv->sprite_scaling_enabled) |
| 2065 | return; |
| 2066 | enabled = ffs(enabled) - 1; |
| 2067 | |
| 2068 | /* WM1 */ |
| 2069 | if (!ironlake_compute_srwm(dev, 1, enabled, |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 2070 | dev_priv->wm.pri_latency[1] * 500, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 2071 | &sandybridge_display_srwm_info, |
| 2072 | &sandybridge_cursor_srwm_info, |
| 2073 | &fbc_wm, &plane_wm, &cursor_wm)) |
| 2074 | return; |
| 2075 | |
| 2076 | I915_WRITE(WM1_LP_ILK, |
| 2077 | WM1_LP_SR_EN | |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 2078 | (dev_priv->wm.pri_latency[1] << WM1_LP_LATENCY_SHIFT) | |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 2079 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
| 2080 | (plane_wm << WM1_LP_SR_SHIFT) | |
| 2081 | cursor_wm); |
| 2082 | |
| 2083 | /* WM2 */ |
| 2084 | if (!ironlake_compute_srwm(dev, 2, enabled, |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 2085 | dev_priv->wm.pri_latency[2] * 500, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 2086 | &sandybridge_display_srwm_info, |
| 2087 | &sandybridge_cursor_srwm_info, |
| 2088 | &fbc_wm, &plane_wm, &cursor_wm)) |
| 2089 | return; |
| 2090 | |
| 2091 | I915_WRITE(WM2_LP_ILK, |
| 2092 | WM2_LP_EN | |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 2093 | (dev_priv->wm.pri_latency[2] << WM1_LP_LATENCY_SHIFT) | |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 2094 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
| 2095 | (plane_wm << WM1_LP_SR_SHIFT) | |
| 2096 | cursor_wm); |
| 2097 | |
Chris Wilson | c43d018 | 2012-12-11 12:01:42 +0000 | [diff] [blame] | 2098 | /* WM3, note we have to correct the cursor latency */ |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 2099 | if (!ironlake_compute_srwm(dev, 3, enabled, |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 2100 | dev_priv->wm.pri_latency[3] * 500, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 2101 | &sandybridge_display_srwm_info, |
| 2102 | &sandybridge_cursor_srwm_info, |
Chris Wilson | c43d018 | 2012-12-11 12:01:42 +0000 | [diff] [blame] | 2103 | &fbc_wm, &plane_wm, &ignore_cursor_wm) || |
| 2104 | !ironlake_compute_srwm(dev, 3, enabled, |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 2105 | dev_priv->wm.cur_latency[3] * 500, |
Chris Wilson | c43d018 | 2012-12-11 12:01:42 +0000 | [diff] [blame] | 2106 | &sandybridge_display_srwm_info, |
| 2107 | &sandybridge_cursor_srwm_info, |
| 2108 | &ignore_fbc_wm, &ignore_plane_wm, &cursor_wm)) |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 2109 | return; |
| 2110 | |
| 2111 | I915_WRITE(WM3_LP_ILK, |
| 2112 | WM3_LP_EN | |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 2113 | (dev_priv->wm.pri_latency[3] << WM1_LP_LATENCY_SHIFT) | |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 2114 | (fbc_wm << WM1_LP_FBC_SHIFT) | |
| 2115 | (plane_wm << WM1_LP_SR_SHIFT) | |
| 2116 | cursor_wm); |
| 2117 | } |
| 2118 | |
Ville Syrjälä | 3658729 | 2013-07-05 11:57:16 +0300 | [diff] [blame] | 2119 | static uint32_t ilk_pipe_pixel_rate(struct drm_device *dev, |
| 2120 | struct drm_crtc *crtc) |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2121 | { |
| 2122 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| 2123 | uint32_t pixel_rate, pfit_size; |
| 2124 | |
Daniel Vetter | ff9a675 | 2013-06-01 17:16:21 +0200 | [diff] [blame] | 2125 | pixel_rate = intel_crtc->config.adjusted_mode.clock; |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2126 | |
| 2127 | /* We only use IF-ID interlacing. If we ever use PF-ID we'll need to |
| 2128 | * adjust the pixel_rate here. */ |
| 2129 | |
| 2130 | pfit_size = intel_crtc->config.pch_pfit.size; |
| 2131 | if (pfit_size) { |
| 2132 | uint64_t pipe_w, pipe_h, pfit_w, pfit_h; |
| 2133 | |
| 2134 | pipe_w = intel_crtc->config.requested_mode.hdisplay; |
| 2135 | pipe_h = intel_crtc->config.requested_mode.vdisplay; |
| 2136 | pfit_w = (pfit_size >> 16) & 0xFFFF; |
| 2137 | pfit_h = pfit_size & 0xFFFF; |
| 2138 | if (pipe_w < pfit_w) |
| 2139 | pipe_w = pfit_w; |
| 2140 | if (pipe_h < pfit_h) |
| 2141 | pipe_h = pfit_h; |
| 2142 | |
| 2143 | pixel_rate = div_u64((uint64_t) pixel_rate * pipe_w * pipe_h, |
| 2144 | pfit_w * pfit_h); |
| 2145 | } |
| 2146 | |
| 2147 | return pixel_rate; |
| 2148 | } |
| 2149 | |
Ville Syrjälä | 3712646 | 2013-08-01 16:18:55 +0300 | [diff] [blame] | 2150 | /* latency must be in 0.1us units. */ |
Ville Syrjälä | 2329704 | 2013-07-05 11:57:17 +0300 | [diff] [blame] | 2151 | static uint32_t ilk_wm_method1(uint32_t pixel_rate, uint8_t bytes_per_pixel, |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2152 | uint32_t latency) |
| 2153 | { |
| 2154 | uint64_t ret; |
| 2155 | |
Ville Syrjälä | 3312ba6 | 2013-08-01 16:18:53 +0300 | [diff] [blame] | 2156 | if (WARN(latency == 0, "Latency value missing\n")) |
| 2157 | return UINT_MAX; |
| 2158 | |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2159 | ret = (uint64_t) pixel_rate * bytes_per_pixel * latency; |
| 2160 | ret = DIV_ROUND_UP_ULL(ret, 64 * 10000) + 2; |
| 2161 | |
| 2162 | return ret; |
| 2163 | } |
| 2164 | |
Ville Syrjälä | 3712646 | 2013-08-01 16:18:55 +0300 | [diff] [blame] | 2165 | /* latency must be in 0.1us units. */ |
Ville Syrjälä | 2329704 | 2013-07-05 11:57:17 +0300 | [diff] [blame] | 2166 | static uint32_t ilk_wm_method2(uint32_t pixel_rate, uint32_t pipe_htotal, |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2167 | uint32_t horiz_pixels, uint8_t bytes_per_pixel, |
| 2168 | uint32_t latency) |
| 2169 | { |
| 2170 | uint32_t ret; |
| 2171 | |
Ville Syrjälä | 3312ba6 | 2013-08-01 16:18:53 +0300 | [diff] [blame] | 2172 | if (WARN(latency == 0, "Latency value missing\n")) |
| 2173 | return UINT_MAX; |
| 2174 | |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2175 | ret = (latency * pixel_rate) / (pipe_htotal * 10000); |
| 2176 | ret = (ret + 1) * horiz_pixels * bytes_per_pixel; |
| 2177 | ret = DIV_ROUND_UP(ret, 64) + 2; |
| 2178 | return ret; |
| 2179 | } |
| 2180 | |
Ville Syrjälä | 2329704 | 2013-07-05 11:57:17 +0300 | [diff] [blame] | 2181 | static uint32_t ilk_wm_fbc(uint32_t pri_val, uint32_t horiz_pixels, |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2182 | uint8_t bytes_per_pixel) |
| 2183 | { |
| 2184 | return DIV_ROUND_UP(pri_val * 64, horiz_pixels * bytes_per_pixel) + 2; |
| 2185 | } |
| 2186 | |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2187 | struct hsw_pipe_wm_parameters { |
| 2188 | bool active; |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2189 | uint32_t pipe_htotal; |
| 2190 | uint32_t pixel_rate; |
Ville Syrjälä | c35426d | 2013-08-07 13:29:50 +0300 | [diff] [blame] | 2191 | struct intel_plane_wm_parameters pri; |
| 2192 | struct intel_plane_wm_parameters spr; |
| 2193 | struct intel_plane_wm_parameters cur; |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2194 | }; |
| 2195 | |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2196 | struct hsw_wm_maximums { |
| 2197 | uint16_t pri; |
| 2198 | uint16_t spr; |
| 2199 | uint16_t cur; |
| 2200 | uint16_t fbc; |
| 2201 | }; |
| 2202 | |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2203 | struct hsw_wm_values { |
| 2204 | uint32_t wm_pipe[3]; |
| 2205 | uint32_t wm_lp[3]; |
| 2206 | uint32_t wm_lp_spr[3]; |
| 2207 | uint32_t wm_linetime[3]; |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2208 | bool enable_fbc_wm; |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2209 | }; |
| 2210 | |
Ville Syrjälä | 240264f | 2013-08-07 13:29:12 +0300 | [diff] [blame] | 2211 | /* used in computing the new watermarks state */ |
| 2212 | struct intel_wm_config { |
| 2213 | unsigned int num_pipes_active; |
| 2214 | bool sprites_enabled; |
| 2215 | bool sprites_scaled; |
| 2216 | bool fbc_wm_enabled; |
| 2217 | }; |
| 2218 | |
Ville Syrjälä | 3712646 | 2013-08-01 16:18:55 +0300 | [diff] [blame] | 2219 | /* |
| 2220 | * For both WM_PIPE and WM_LP. |
| 2221 | * mem_value must be in 0.1us units. |
| 2222 | */ |
Ville Syrjälä | ac830fe | 2013-08-30 14:30:23 +0300 | [diff] [blame] | 2223 | static uint32_t ilk_compute_pri_wm(const struct hsw_pipe_wm_parameters *params, |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2224 | uint32_t mem_value, |
| 2225 | bool is_lp) |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2226 | { |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2227 | uint32_t method1, method2; |
| 2228 | |
Ville Syrjälä | c35426d | 2013-08-07 13:29:50 +0300 | [diff] [blame] | 2229 | if (!params->active || !params->pri.enabled) |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2230 | return 0; |
| 2231 | |
Ville Syrjälä | 2329704 | 2013-07-05 11:57:17 +0300 | [diff] [blame] | 2232 | method1 = ilk_wm_method1(params->pixel_rate, |
Ville Syrjälä | c35426d | 2013-08-07 13:29:50 +0300 | [diff] [blame] | 2233 | params->pri.bytes_per_pixel, |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2234 | mem_value); |
| 2235 | |
| 2236 | if (!is_lp) |
| 2237 | return method1; |
| 2238 | |
Ville Syrjälä | 2329704 | 2013-07-05 11:57:17 +0300 | [diff] [blame] | 2239 | method2 = ilk_wm_method2(params->pixel_rate, |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2240 | params->pipe_htotal, |
Ville Syrjälä | c35426d | 2013-08-07 13:29:50 +0300 | [diff] [blame] | 2241 | params->pri.horiz_pixels, |
| 2242 | params->pri.bytes_per_pixel, |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2243 | mem_value); |
| 2244 | |
| 2245 | return min(method1, method2); |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2246 | } |
| 2247 | |
Ville Syrjälä | 3712646 | 2013-08-01 16:18:55 +0300 | [diff] [blame] | 2248 | /* |
| 2249 | * For both WM_PIPE and WM_LP. |
| 2250 | * mem_value must be in 0.1us units. |
| 2251 | */ |
Ville Syrjälä | ac830fe | 2013-08-30 14:30:23 +0300 | [diff] [blame] | 2252 | static uint32_t ilk_compute_spr_wm(const struct hsw_pipe_wm_parameters *params, |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2253 | uint32_t mem_value) |
| 2254 | { |
| 2255 | uint32_t method1, method2; |
| 2256 | |
Ville Syrjälä | c35426d | 2013-08-07 13:29:50 +0300 | [diff] [blame] | 2257 | if (!params->active || !params->spr.enabled) |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2258 | return 0; |
| 2259 | |
Ville Syrjälä | 2329704 | 2013-07-05 11:57:17 +0300 | [diff] [blame] | 2260 | method1 = ilk_wm_method1(params->pixel_rate, |
Ville Syrjälä | c35426d | 2013-08-07 13:29:50 +0300 | [diff] [blame] | 2261 | params->spr.bytes_per_pixel, |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2262 | mem_value); |
Ville Syrjälä | 2329704 | 2013-07-05 11:57:17 +0300 | [diff] [blame] | 2263 | method2 = ilk_wm_method2(params->pixel_rate, |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2264 | params->pipe_htotal, |
Ville Syrjälä | c35426d | 2013-08-07 13:29:50 +0300 | [diff] [blame] | 2265 | params->spr.horiz_pixels, |
| 2266 | params->spr.bytes_per_pixel, |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2267 | mem_value); |
| 2268 | return min(method1, method2); |
| 2269 | } |
| 2270 | |
Ville Syrjälä | 3712646 | 2013-08-01 16:18:55 +0300 | [diff] [blame] | 2271 | /* |
| 2272 | * For both WM_PIPE and WM_LP. |
| 2273 | * mem_value must be in 0.1us units. |
| 2274 | */ |
Ville Syrjälä | ac830fe | 2013-08-30 14:30:23 +0300 | [diff] [blame] | 2275 | static uint32_t ilk_compute_cur_wm(const struct hsw_pipe_wm_parameters *params, |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2276 | uint32_t mem_value) |
| 2277 | { |
Ville Syrjälä | c35426d | 2013-08-07 13:29:50 +0300 | [diff] [blame] | 2278 | if (!params->active || !params->cur.enabled) |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2279 | return 0; |
| 2280 | |
Ville Syrjälä | 2329704 | 2013-07-05 11:57:17 +0300 | [diff] [blame] | 2281 | return ilk_wm_method2(params->pixel_rate, |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2282 | params->pipe_htotal, |
Ville Syrjälä | c35426d | 2013-08-07 13:29:50 +0300 | [diff] [blame] | 2283 | params->cur.horiz_pixels, |
| 2284 | params->cur.bytes_per_pixel, |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2285 | mem_value); |
| 2286 | } |
| 2287 | |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2288 | /* Only for WM_LP. */ |
Ville Syrjälä | ac830fe | 2013-08-30 14:30:23 +0300 | [diff] [blame] | 2289 | static uint32_t ilk_compute_fbc_wm(const struct hsw_pipe_wm_parameters *params, |
Ville Syrjälä | 1fda988 | 2013-07-05 11:57:19 +0300 | [diff] [blame] | 2290 | uint32_t pri_val) |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2291 | { |
Ville Syrjälä | c35426d | 2013-08-07 13:29:50 +0300 | [diff] [blame] | 2292 | if (!params->active || !params->pri.enabled) |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2293 | return 0; |
| 2294 | |
Ville Syrjälä | 2329704 | 2013-07-05 11:57:17 +0300 | [diff] [blame] | 2295 | return ilk_wm_fbc(pri_val, |
Ville Syrjälä | c35426d | 2013-08-07 13:29:50 +0300 | [diff] [blame] | 2296 | params->pri.horiz_pixels, |
| 2297 | params->pri.bytes_per_pixel); |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2298 | } |
| 2299 | |
Ville Syrjälä | 158ae64 | 2013-08-07 13:28:19 +0300 | [diff] [blame] | 2300 | static unsigned int ilk_display_fifo_size(const struct drm_device *dev) |
| 2301 | { |
| 2302 | if (INTEL_INFO(dev)->gen >= 7) |
| 2303 | return 768; |
| 2304 | else |
| 2305 | return 512; |
| 2306 | } |
| 2307 | |
| 2308 | /* Calculate the maximum primary/sprite plane watermark */ |
| 2309 | static unsigned int ilk_plane_wm_max(const struct drm_device *dev, |
| 2310 | int level, |
Ville Syrjälä | 240264f | 2013-08-07 13:29:12 +0300 | [diff] [blame] | 2311 | const struct intel_wm_config *config, |
Ville Syrjälä | 158ae64 | 2013-08-07 13:28:19 +0300 | [diff] [blame] | 2312 | enum intel_ddb_partitioning ddb_partitioning, |
| 2313 | bool is_sprite) |
| 2314 | { |
| 2315 | unsigned int fifo_size = ilk_display_fifo_size(dev); |
| 2316 | unsigned int max; |
| 2317 | |
| 2318 | /* if sprites aren't enabled, sprites get nothing */ |
Ville Syrjälä | 240264f | 2013-08-07 13:29:12 +0300 | [diff] [blame] | 2319 | if (is_sprite && !config->sprites_enabled) |
Ville Syrjälä | 158ae64 | 2013-08-07 13:28:19 +0300 | [diff] [blame] | 2320 | return 0; |
| 2321 | |
| 2322 | /* HSW allows LP1+ watermarks even with multiple pipes */ |
Ville Syrjälä | 240264f | 2013-08-07 13:29:12 +0300 | [diff] [blame] | 2323 | if (level == 0 || config->num_pipes_active > 1) { |
Ville Syrjälä | 158ae64 | 2013-08-07 13:28:19 +0300 | [diff] [blame] | 2324 | fifo_size /= INTEL_INFO(dev)->num_pipes; |
| 2325 | |
| 2326 | /* |
| 2327 | * For some reason the non self refresh |
| 2328 | * FIFO size is only half of the self |
| 2329 | * refresh FIFO size on ILK/SNB. |
| 2330 | */ |
| 2331 | if (INTEL_INFO(dev)->gen <= 6) |
| 2332 | fifo_size /= 2; |
| 2333 | } |
| 2334 | |
Ville Syrjälä | 240264f | 2013-08-07 13:29:12 +0300 | [diff] [blame] | 2335 | if (config->sprites_enabled) { |
Ville Syrjälä | 158ae64 | 2013-08-07 13:28:19 +0300 | [diff] [blame] | 2336 | /* level 0 is always calculated with 1:1 split */ |
| 2337 | if (level > 0 && ddb_partitioning == INTEL_DDB_PART_5_6) { |
| 2338 | if (is_sprite) |
| 2339 | fifo_size *= 5; |
| 2340 | fifo_size /= 6; |
| 2341 | } else { |
| 2342 | fifo_size /= 2; |
| 2343 | } |
| 2344 | } |
| 2345 | |
| 2346 | /* clamp to max that the registers can hold */ |
| 2347 | if (INTEL_INFO(dev)->gen >= 7) |
| 2348 | /* IVB/HSW primary/sprite plane watermarks */ |
| 2349 | max = level == 0 ? 127 : 1023; |
| 2350 | else if (!is_sprite) |
| 2351 | /* ILK/SNB primary plane watermarks */ |
| 2352 | max = level == 0 ? 127 : 511; |
| 2353 | else |
| 2354 | /* ILK/SNB sprite plane watermarks */ |
| 2355 | max = level == 0 ? 63 : 255; |
| 2356 | |
| 2357 | return min(fifo_size, max); |
| 2358 | } |
| 2359 | |
| 2360 | /* Calculate the maximum cursor plane watermark */ |
| 2361 | static unsigned int ilk_cursor_wm_max(const struct drm_device *dev, |
Ville Syrjälä | 240264f | 2013-08-07 13:29:12 +0300 | [diff] [blame] | 2362 | int level, |
| 2363 | const struct intel_wm_config *config) |
Ville Syrjälä | 158ae64 | 2013-08-07 13:28:19 +0300 | [diff] [blame] | 2364 | { |
| 2365 | /* HSW LP1+ watermarks w/ multiple pipes */ |
Ville Syrjälä | 240264f | 2013-08-07 13:29:12 +0300 | [diff] [blame] | 2366 | if (level > 0 && config->num_pipes_active > 1) |
Ville Syrjälä | 158ae64 | 2013-08-07 13:28:19 +0300 | [diff] [blame] | 2367 | return 64; |
| 2368 | |
| 2369 | /* otherwise just report max that registers can hold */ |
| 2370 | if (INTEL_INFO(dev)->gen >= 7) |
| 2371 | return level == 0 ? 63 : 255; |
| 2372 | else |
| 2373 | return level == 0 ? 31 : 63; |
| 2374 | } |
| 2375 | |
| 2376 | /* Calculate the maximum FBC watermark */ |
| 2377 | static unsigned int ilk_fbc_wm_max(void) |
| 2378 | { |
| 2379 | /* max that registers can hold */ |
| 2380 | return 15; |
| 2381 | } |
| 2382 | |
| 2383 | static void ilk_wm_max(struct drm_device *dev, |
| 2384 | int level, |
Ville Syrjälä | 240264f | 2013-08-07 13:29:12 +0300 | [diff] [blame] | 2385 | const struct intel_wm_config *config, |
Ville Syrjälä | 158ae64 | 2013-08-07 13:28:19 +0300 | [diff] [blame] | 2386 | enum intel_ddb_partitioning ddb_partitioning, |
| 2387 | struct hsw_wm_maximums *max) |
| 2388 | { |
Ville Syrjälä | 240264f | 2013-08-07 13:29:12 +0300 | [diff] [blame] | 2389 | max->pri = ilk_plane_wm_max(dev, level, config, ddb_partitioning, false); |
| 2390 | max->spr = ilk_plane_wm_max(dev, level, config, ddb_partitioning, true); |
| 2391 | max->cur = ilk_cursor_wm_max(dev, level, config); |
Ville Syrjälä | 158ae64 | 2013-08-07 13:28:19 +0300 | [diff] [blame] | 2392 | max->fbc = ilk_fbc_wm_max(); |
| 2393 | } |
| 2394 | |
Ville Syrjälä | a9786a1 | 2013-08-07 13:24:47 +0300 | [diff] [blame] | 2395 | static bool ilk_check_wm(int level, |
| 2396 | const struct hsw_wm_maximums *max, |
Ville Syrjälä | 1fd527c | 2013-08-06 22:24:05 +0300 | [diff] [blame] | 2397 | struct intel_wm_level *result) |
Ville Syrjälä | a9786a1 | 2013-08-07 13:24:47 +0300 | [diff] [blame] | 2398 | { |
| 2399 | bool ret; |
| 2400 | |
| 2401 | /* already determined to be invalid? */ |
| 2402 | if (!result->enable) |
| 2403 | return false; |
| 2404 | |
| 2405 | result->enable = result->pri_val <= max->pri && |
| 2406 | result->spr_val <= max->spr && |
| 2407 | result->cur_val <= max->cur; |
| 2408 | |
| 2409 | ret = result->enable; |
| 2410 | |
| 2411 | /* |
| 2412 | * HACK until we can pre-compute everything, |
| 2413 | * and thus fail gracefully if LP0 watermarks |
| 2414 | * are exceeded... |
| 2415 | */ |
| 2416 | if (level == 0 && !result->enable) { |
| 2417 | if (result->pri_val > max->pri) |
| 2418 | DRM_DEBUG_KMS("Primary WM%d too large %u (max %u)\n", |
| 2419 | level, result->pri_val, max->pri); |
| 2420 | if (result->spr_val > max->spr) |
| 2421 | DRM_DEBUG_KMS("Sprite WM%d too large %u (max %u)\n", |
| 2422 | level, result->spr_val, max->spr); |
| 2423 | if (result->cur_val > max->cur) |
| 2424 | DRM_DEBUG_KMS("Cursor WM%d too large %u (max %u)\n", |
| 2425 | level, result->cur_val, max->cur); |
| 2426 | |
| 2427 | result->pri_val = min_t(uint32_t, result->pri_val, max->pri); |
| 2428 | result->spr_val = min_t(uint32_t, result->spr_val, max->spr); |
| 2429 | result->cur_val = min_t(uint32_t, result->cur_val, max->cur); |
| 2430 | result->enable = true; |
| 2431 | } |
| 2432 | |
| 2433 | DRM_DEBUG_KMS("WM%d: %sabled\n", level, result->enable ? "en" : "dis"); |
| 2434 | |
| 2435 | return ret; |
| 2436 | } |
| 2437 | |
Ville Syrjälä | 6f5ddd1 | 2013-08-06 22:24:02 +0300 | [diff] [blame] | 2438 | static void ilk_compute_wm_level(struct drm_i915_private *dev_priv, |
| 2439 | int level, |
Ville Syrjälä | ac830fe | 2013-08-30 14:30:23 +0300 | [diff] [blame] | 2440 | const struct hsw_pipe_wm_parameters *p, |
Ville Syrjälä | 1fd527c | 2013-08-06 22:24:05 +0300 | [diff] [blame] | 2441 | struct intel_wm_level *result) |
Ville Syrjälä | 6f5ddd1 | 2013-08-06 22:24:02 +0300 | [diff] [blame] | 2442 | { |
| 2443 | uint16_t pri_latency = dev_priv->wm.pri_latency[level]; |
| 2444 | uint16_t spr_latency = dev_priv->wm.spr_latency[level]; |
| 2445 | uint16_t cur_latency = dev_priv->wm.cur_latency[level]; |
| 2446 | |
| 2447 | /* WM1+ latency values stored in 0.5us units */ |
| 2448 | if (level > 0) { |
| 2449 | pri_latency *= 5; |
| 2450 | spr_latency *= 5; |
| 2451 | cur_latency *= 5; |
| 2452 | } |
| 2453 | |
| 2454 | result->pri_val = ilk_compute_pri_wm(p, pri_latency, level); |
| 2455 | result->spr_val = ilk_compute_spr_wm(p, spr_latency); |
| 2456 | result->cur_val = ilk_compute_cur_wm(p, cur_latency); |
| 2457 | result->fbc_val = ilk_compute_fbc_wm(p, result->pri_val); |
| 2458 | result->enable = true; |
| 2459 | } |
| 2460 | |
Ville Syrjälä | 5b77da3 | 2013-08-01 16:18:51 +0300 | [diff] [blame] | 2461 | static bool hsw_compute_lp_wm(struct drm_i915_private *dev_priv, |
Ville Syrjälä | ac830fe | 2013-08-30 14:30:23 +0300 | [diff] [blame] | 2462 | int level, const struct hsw_wm_maximums *max, |
| 2463 | const struct hsw_pipe_wm_parameters *params, |
Ville Syrjälä | 1fd527c | 2013-08-06 22:24:05 +0300 | [diff] [blame] | 2464 | struct intel_wm_level *result) |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2465 | { |
| 2466 | enum pipe pipe; |
Ville Syrjälä | 1fd527c | 2013-08-06 22:24:05 +0300 | [diff] [blame] | 2467 | struct intel_wm_level res[3]; |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2468 | |
Ville Syrjälä | 6f5ddd1 | 2013-08-06 22:24:02 +0300 | [diff] [blame] | 2469 | for (pipe = PIPE_A; pipe <= PIPE_C; pipe++) |
| 2470 | ilk_compute_wm_level(dev_priv, level, ¶ms[pipe], &res[pipe]); |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2471 | |
Ville Syrjälä | 6f5ddd1 | 2013-08-06 22:24:02 +0300 | [diff] [blame] | 2472 | result->pri_val = max3(res[0].pri_val, res[1].pri_val, res[2].pri_val); |
| 2473 | result->spr_val = max3(res[0].spr_val, res[1].spr_val, res[2].spr_val); |
| 2474 | result->cur_val = max3(res[0].cur_val, res[1].cur_val, res[2].cur_val); |
| 2475 | result->fbc_val = max3(res[0].fbc_val, res[1].fbc_val, res[2].fbc_val); |
| 2476 | result->enable = true; |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2477 | |
Ville Syrjälä | a9786a1 | 2013-08-07 13:24:47 +0300 | [diff] [blame] | 2478 | return ilk_check_wm(level, max, result); |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2479 | } |
| 2480 | |
Ville Syrjälä | 8de123a | 2013-08-30 14:30:24 +0300 | [diff] [blame] | 2481 | |
| 2482 | static uint32_t hsw_compute_wm_pipe(struct drm_device *dev, |
Ville Syrjälä | ac830fe | 2013-08-30 14:30:23 +0300 | [diff] [blame] | 2483 | const struct hsw_pipe_wm_parameters *params) |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2484 | { |
Ville Syrjälä | 8de123a | 2013-08-30 14:30:24 +0300 | [diff] [blame] | 2485 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 2486 | struct intel_wm_config config = { |
| 2487 | .num_pipes_active = 1, |
| 2488 | .sprites_enabled = params->spr.enabled, |
| 2489 | .sprites_scaled = params->spr.scaled, |
| 2490 | }; |
| 2491 | struct hsw_wm_maximums max; |
| 2492 | struct intel_wm_level res; |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2493 | |
Ville Syrjälä | 8de123a | 2013-08-30 14:30:24 +0300 | [diff] [blame] | 2494 | if (!params->active) |
| 2495 | return 0; |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2496 | |
Ville Syrjälä | 8de123a | 2013-08-30 14:30:24 +0300 | [diff] [blame] | 2497 | ilk_wm_max(dev, 0, &config, INTEL_DDB_PART_1_2, &max); |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2498 | |
Ville Syrjälä | 8de123a | 2013-08-30 14:30:24 +0300 | [diff] [blame] | 2499 | ilk_compute_wm_level(dev_priv, 0, params, &res); |
| 2500 | |
| 2501 | ilk_check_wm(0, &max, &res); |
| 2502 | |
| 2503 | return (res.pri_val << WM0_PIPE_PLANE_SHIFT) | |
| 2504 | (res.spr_val << WM0_PIPE_SPRITE_SHIFT) | |
| 2505 | res.cur_val; |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2506 | } |
| 2507 | |
| 2508 | static uint32_t |
| 2509 | hsw_compute_linetime_wm(struct drm_device *dev, struct drm_crtc *crtc) |
Eugeni Dodonov | 1f8eeab | 2012-05-09 15:37:24 -0300 | [diff] [blame] | 2510 | { |
| 2511 | struct drm_i915_private *dev_priv = dev->dev_private; |
Paulo Zanoni | 1011d8c | 2013-05-09 16:55:50 -0300 | [diff] [blame] | 2512 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
Paulo Zanoni | 1011d8c | 2013-05-09 16:55:50 -0300 | [diff] [blame] | 2513 | struct drm_display_mode *mode = &intel_crtc->config.adjusted_mode; |
Paulo Zanoni | 85a02de | 2013-05-03 17:23:43 -0300 | [diff] [blame] | 2514 | u32 linetime, ips_linetime; |
Eugeni Dodonov | 1f8eeab | 2012-05-09 15:37:24 -0300 | [diff] [blame] | 2515 | |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2516 | if (!intel_crtc_active(crtc)) |
| 2517 | return 0; |
Paulo Zanoni | 1011d8c | 2013-05-09 16:55:50 -0300 | [diff] [blame] | 2518 | |
Eugeni Dodonov | 1f8eeab | 2012-05-09 15:37:24 -0300 | [diff] [blame] | 2519 | /* The WM are computed with base on how long it takes to fill a single |
| 2520 | * row at the given clock rate, multiplied by 8. |
| 2521 | * */ |
Paulo Zanoni | 85a02de | 2013-05-03 17:23:43 -0300 | [diff] [blame] | 2522 | linetime = DIV_ROUND_CLOSEST(mode->htotal * 1000 * 8, mode->clock); |
| 2523 | ips_linetime = DIV_ROUND_CLOSEST(mode->htotal * 1000 * 8, |
| 2524 | intel_ddi_get_cdclk_freq(dev_priv)); |
Eugeni Dodonov | 1f8eeab | 2012-05-09 15:37:24 -0300 | [diff] [blame] | 2525 | |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2526 | return PIPE_WM_LINETIME_IPS_LINETIME(ips_linetime) | |
| 2527 | PIPE_WM_LINETIME_TIME(linetime); |
Eugeni Dodonov | 1f8eeab | 2012-05-09 15:37:24 -0300 | [diff] [blame] | 2528 | } |
| 2529 | |
Ville Syrjälä | 12b134d | 2013-07-05 11:57:21 +0300 | [diff] [blame] | 2530 | static void intel_read_wm_latency(struct drm_device *dev, uint16_t wm[5]) |
| 2531 | { |
| 2532 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 2533 | |
| 2534 | if (IS_HASWELL(dev)) { |
| 2535 | uint64_t sskpd = I915_READ64(MCH_SSKPD); |
| 2536 | |
| 2537 | wm[0] = (sskpd >> 56) & 0xFF; |
| 2538 | if (wm[0] == 0) |
| 2539 | wm[0] = sskpd & 0xF; |
Ville Syrjälä | e5d5019 | 2013-07-05 11:57:22 +0300 | [diff] [blame] | 2540 | wm[1] = (sskpd >> 4) & 0xFF; |
| 2541 | wm[2] = (sskpd >> 12) & 0xFF; |
| 2542 | wm[3] = (sskpd >> 20) & 0x1FF; |
| 2543 | wm[4] = (sskpd >> 32) & 0x1FF; |
Ville Syrjälä | 63cf9a1 | 2013-07-05 11:57:23 +0300 | [diff] [blame] | 2544 | } else if (INTEL_INFO(dev)->gen >= 6) { |
| 2545 | uint32_t sskpd = I915_READ(MCH_SSKPD); |
| 2546 | |
| 2547 | wm[0] = (sskpd >> SSKPD_WM0_SHIFT) & SSKPD_WM_MASK; |
| 2548 | wm[1] = (sskpd >> SSKPD_WM1_SHIFT) & SSKPD_WM_MASK; |
| 2549 | wm[2] = (sskpd >> SSKPD_WM2_SHIFT) & SSKPD_WM_MASK; |
| 2550 | wm[3] = (sskpd >> SSKPD_WM3_SHIFT) & SSKPD_WM_MASK; |
Ville Syrjälä | 3a88d0a | 2013-08-01 16:18:49 +0300 | [diff] [blame] | 2551 | } else if (INTEL_INFO(dev)->gen >= 5) { |
| 2552 | uint32_t mltr = I915_READ(MLTR_ILK); |
| 2553 | |
| 2554 | /* ILK primary LP0 latency is 700 ns */ |
| 2555 | wm[0] = 7; |
| 2556 | wm[1] = (mltr >> MLTR_WM1_SHIFT) & ILK_SRLT_MASK; |
| 2557 | wm[2] = (mltr >> MLTR_WM2_SHIFT) & ILK_SRLT_MASK; |
Ville Syrjälä | 12b134d | 2013-07-05 11:57:21 +0300 | [diff] [blame] | 2558 | } |
| 2559 | } |
| 2560 | |
Ville Syrjälä | 53615a5 | 2013-08-01 16:18:50 +0300 | [diff] [blame] | 2561 | static void intel_fixup_spr_wm_latency(struct drm_device *dev, uint16_t wm[5]) |
| 2562 | { |
| 2563 | /* ILK sprite LP0 latency is 1300 ns */ |
| 2564 | if (INTEL_INFO(dev)->gen == 5) |
| 2565 | wm[0] = 13; |
| 2566 | } |
| 2567 | |
| 2568 | static void intel_fixup_cur_wm_latency(struct drm_device *dev, uint16_t wm[5]) |
| 2569 | { |
| 2570 | /* ILK cursor LP0 latency is 1300 ns */ |
| 2571 | if (INTEL_INFO(dev)->gen == 5) |
| 2572 | wm[0] = 13; |
| 2573 | |
| 2574 | /* WaDoubleCursorLP3Latency:ivb */ |
| 2575 | if (IS_IVYBRIDGE(dev)) |
| 2576 | wm[3] *= 2; |
| 2577 | } |
| 2578 | |
Ville Syrjälä | ad0d6dc | 2013-08-30 14:30:25 +0300 | [diff] [blame] | 2579 | static int ilk_wm_max_level(const struct drm_device *dev) |
| 2580 | { |
| 2581 | /* how many WM levels are we expecting */ |
| 2582 | if (IS_HASWELL(dev)) |
| 2583 | return 4; |
| 2584 | else if (INTEL_INFO(dev)->gen >= 6) |
| 2585 | return 3; |
| 2586 | else |
| 2587 | return 2; |
| 2588 | } |
| 2589 | |
Ville Syrjälä | 26ec971 | 2013-08-01 16:18:52 +0300 | [diff] [blame] | 2590 | static void intel_print_wm_latency(struct drm_device *dev, |
| 2591 | const char *name, |
| 2592 | const uint16_t wm[5]) |
| 2593 | { |
Ville Syrjälä | ad0d6dc | 2013-08-30 14:30:25 +0300 | [diff] [blame] | 2594 | int level, max_level = ilk_wm_max_level(dev); |
Ville Syrjälä | 26ec971 | 2013-08-01 16:18:52 +0300 | [diff] [blame] | 2595 | |
| 2596 | for (level = 0; level <= max_level; level++) { |
| 2597 | unsigned int latency = wm[level]; |
| 2598 | |
| 2599 | if (latency == 0) { |
| 2600 | DRM_ERROR("%s WM%d latency not provided\n", |
| 2601 | name, level); |
| 2602 | continue; |
| 2603 | } |
| 2604 | |
| 2605 | /* WM1+ latency values in 0.5us units */ |
| 2606 | if (level > 0) |
| 2607 | latency *= 5; |
| 2608 | |
| 2609 | DRM_DEBUG_KMS("%s WM%d latency %u (%u.%u usec)\n", |
| 2610 | name, level, wm[level], |
| 2611 | latency / 10, latency % 10); |
| 2612 | } |
| 2613 | } |
| 2614 | |
Ville Syrjälä | 53615a5 | 2013-08-01 16:18:50 +0300 | [diff] [blame] | 2615 | static void intel_setup_wm_latency(struct drm_device *dev) |
| 2616 | { |
| 2617 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 2618 | |
| 2619 | intel_read_wm_latency(dev, dev_priv->wm.pri_latency); |
| 2620 | |
| 2621 | memcpy(dev_priv->wm.spr_latency, dev_priv->wm.pri_latency, |
| 2622 | sizeof(dev_priv->wm.pri_latency)); |
| 2623 | memcpy(dev_priv->wm.cur_latency, dev_priv->wm.pri_latency, |
| 2624 | sizeof(dev_priv->wm.pri_latency)); |
| 2625 | |
| 2626 | intel_fixup_spr_wm_latency(dev, dev_priv->wm.spr_latency); |
| 2627 | intel_fixup_cur_wm_latency(dev, dev_priv->wm.cur_latency); |
Ville Syrjälä | 26ec971 | 2013-08-01 16:18:52 +0300 | [diff] [blame] | 2628 | |
| 2629 | intel_print_wm_latency(dev, "Primary", dev_priv->wm.pri_latency); |
| 2630 | intel_print_wm_latency(dev, "Sprite", dev_priv->wm.spr_latency); |
| 2631 | intel_print_wm_latency(dev, "Cursor", dev_priv->wm.cur_latency); |
Ville Syrjälä | 53615a5 | 2013-08-01 16:18:50 +0300 | [diff] [blame] | 2632 | } |
| 2633 | |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2634 | static void hsw_compute_wm_parameters(struct drm_device *dev, |
| 2635 | struct hsw_pipe_wm_parameters *params, |
Paulo Zanoni | 861f338 | 2013-05-31 10:19:21 -0300 | [diff] [blame] | 2636 | struct hsw_wm_maximums *lp_max_1_2, |
| 2637 | struct hsw_wm_maximums *lp_max_5_6) |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2638 | { |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2639 | struct drm_crtc *crtc; |
| 2640 | struct drm_plane *plane; |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2641 | enum pipe pipe; |
Ville Syrjälä | 240264f | 2013-08-07 13:29:12 +0300 | [diff] [blame] | 2642 | struct intel_wm_config config = {}; |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2643 | |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2644 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| 2645 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| 2646 | struct hsw_pipe_wm_parameters *p; |
| 2647 | |
| 2648 | pipe = intel_crtc->pipe; |
| 2649 | p = ¶ms[pipe]; |
| 2650 | |
| 2651 | p->active = intel_crtc_active(crtc); |
| 2652 | if (!p->active) |
| 2653 | continue; |
| 2654 | |
Ville Syrjälä | 240264f | 2013-08-07 13:29:12 +0300 | [diff] [blame] | 2655 | config.num_pipes_active++; |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2656 | |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2657 | p->pipe_htotal = intel_crtc->config.adjusted_mode.htotal; |
Ville Syrjälä | 3658729 | 2013-07-05 11:57:16 +0300 | [diff] [blame] | 2658 | p->pixel_rate = ilk_pipe_pixel_rate(dev, crtc); |
Ville Syrjälä | c35426d | 2013-08-07 13:29:50 +0300 | [diff] [blame] | 2659 | p->pri.bytes_per_pixel = crtc->fb->bits_per_pixel / 8; |
| 2660 | p->cur.bytes_per_pixel = 4; |
| 2661 | p->pri.horiz_pixels = |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2662 | intel_crtc->config.requested_mode.hdisplay; |
Ville Syrjälä | c35426d | 2013-08-07 13:29:50 +0300 | [diff] [blame] | 2663 | p->cur.horiz_pixels = 64; |
| 2664 | /* TODO: for now, assume primary and cursor planes are always enabled. */ |
| 2665 | p->pri.enabled = true; |
| 2666 | p->cur.enabled = true; |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2667 | } |
| 2668 | |
| 2669 | list_for_each_entry(plane, &dev->mode_config.plane_list, head) { |
| 2670 | struct intel_plane *intel_plane = to_intel_plane(plane); |
| 2671 | struct hsw_pipe_wm_parameters *p; |
| 2672 | |
| 2673 | pipe = intel_plane->pipe; |
| 2674 | p = ¶ms[pipe]; |
| 2675 | |
Ville Syrjälä | c35426d | 2013-08-07 13:29:50 +0300 | [diff] [blame] | 2676 | p->spr = intel_plane->wm; |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2677 | |
Ville Syrjälä | c35426d | 2013-08-07 13:29:50 +0300 | [diff] [blame] | 2678 | config.sprites_enabled |= p->spr.enabled; |
| 2679 | config.sprites_scaled |= p->spr.scaled; |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2680 | } |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2681 | |
Ville Syrjälä | 240264f | 2013-08-07 13:29:12 +0300 | [diff] [blame] | 2682 | ilk_wm_max(dev, 1, &config, INTEL_DDB_PART_1_2, lp_max_1_2); |
Ville Syrjälä | 158ae64 | 2013-08-07 13:28:19 +0300 | [diff] [blame] | 2683 | |
| 2684 | /* 5/6 split only in single pipe config on IVB+ */ |
Ville Syrjälä | 240264f | 2013-08-07 13:29:12 +0300 | [diff] [blame] | 2685 | if (INTEL_INFO(dev)->gen >= 7 && config.num_pipes_active <= 1) |
| 2686 | ilk_wm_max(dev, 1, &config, INTEL_DDB_PART_5_6, lp_max_5_6); |
Ville Syrjälä | 158ae64 | 2013-08-07 13:28:19 +0300 | [diff] [blame] | 2687 | else |
| 2688 | *lp_max_5_6 = *lp_max_1_2; |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2689 | } |
| 2690 | |
| 2691 | static void hsw_compute_wm_results(struct drm_device *dev, |
Ville Syrjälä | ac830fe | 2013-08-30 14:30:23 +0300 | [diff] [blame] | 2692 | const struct hsw_pipe_wm_parameters *params, |
| 2693 | const struct hsw_wm_maximums *lp_maximums, |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2694 | struct hsw_wm_values *results) |
Paulo Zanoni | 1011d8c | 2013-05-09 16:55:50 -0300 | [diff] [blame] | 2695 | { |
| 2696 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 2697 | struct drm_crtc *crtc; |
Ville Syrjälä | 1fd527c | 2013-08-06 22:24:05 +0300 | [diff] [blame] | 2698 | struct intel_wm_level lp_results[4] = {}; |
Paulo Zanoni | 1011d8c | 2013-05-09 16:55:50 -0300 | [diff] [blame] | 2699 | enum pipe pipe; |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2700 | int level, max_level, wm_lp; |
Paulo Zanoni | 1011d8c | 2013-05-09 16:55:50 -0300 | [diff] [blame] | 2701 | |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2702 | for (level = 1; level <= 4; level++) |
Ville Syrjälä | 5b77da3 | 2013-08-01 16:18:51 +0300 | [diff] [blame] | 2703 | if (!hsw_compute_lp_wm(dev_priv, level, |
| 2704 | lp_maximums, params, |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2705 | &lp_results[level - 1])) |
| 2706 | break; |
| 2707 | max_level = level - 1; |
| 2708 | |
Ville Syrjälä | 5c53661 | 2013-08-09 18:02:09 +0300 | [diff] [blame] | 2709 | memset(results, 0, sizeof(*results)); |
| 2710 | |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2711 | /* The spec says it is preferred to disable FBC WMs instead of disabling |
| 2712 | * a WM level. */ |
| 2713 | results->enable_fbc_wm = true; |
| 2714 | for (level = 1; level <= max_level; level++) { |
Dan Carpenter | 16e5406 | 2013-08-09 13:07:31 +0300 | [diff] [blame] | 2715 | if (lp_results[level - 1].fbc_val > lp_maximums->fbc) { |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2716 | results->enable_fbc_wm = false; |
Ville Syrjälä | 71fff20 | 2013-08-06 22:24:03 +0300 | [diff] [blame] | 2717 | lp_results[level - 1].fbc_val = 0; |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2718 | } |
| 2719 | } |
| 2720 | |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2721 | for (wm_lp = 1; wm_lp <= 3; wm_lp++) { |
Ville Syrjälä | 1fd527c | 2013-08-06 22:24:05 +0300 | [diff] [blame] | 2722 | const struct intel_wm_level *r; |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2723 | |
| 2724 | level = (max_level == 4 && wm_lp > 1) ? wm_lp + 1 : wm_lp; |
| 2725 | if (level > max_level) |
| 2726 | break; |
| 2727 | |
| 2728 | r = &lp_results[level - 1]; |
| 2729 | results->wm_lp[wm_lp - 1] = HSW_WM_LP_VAL(level * 2, |
| 2730 | r->fbc_val, |
| 2731 | r->pri_val, |
| 2732 | r->cur_val); |
| 2733 | results->wm_lp_spr[wm_lp - 1] = r->spr_val; |
| 2734 | } |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2735 | |
| 2736 | for_each_pipe(pipe) |
Ville Syrjälä | 8de123a | 2013-08-30 14:30:24 +0300 | [diff] [blame] | 2737 | results->wm_pipe[pipe] = hsw_compute_wm_pipe(dev, |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2738 | ¶ms[pipe]); |
Paulo Zanoni | 1011d8c | 2013-05-09 16:55:50 -0300 | [diff] [blame] | 2739 | |
| 2740 | for_each_pipe(pipe) { |
| 2741 | crtc = dev_priv->pipe_to_crtc_mapping[pipe]; |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2742 | results->wm_linetime[pipe] = hsw_compute_linetime_wm(dev, crtc); |
| 2743 | } |
| 2744 | } |
| 2745 | |
Paulo Zanoni | 861f338 | 2013-05-31 10:19:21 -0300 | [diff] [blame] | 2746 | /* Find the result with the highest level enabled. Check for enable_fbc_wm in |
| 2747 | * case both are at the same level. Prefer r1 in case they're the same. */ |
Damien Lespiau | f4db932 | 2013-06-24 22:59:50 +0100 | [diff] [blame] | 2748 | static struct hsw_wm_values *hsw_find_best_result(struct hsw_wm_values *r1, |
| 2749 | struct hsw_wm_values *r2) |
Paulo Zanoni | 861f338 | 2013-05-31 10:19:21 -0300 | [diff] [blame] | 2750 | { |
| 2751 | int i, val_r1 = 0, val_r2 = 0; |
| 2752 | |
| 2753 | for (i = 0; i < 3; i++) { |
| 2754 | if (r1->wm_lp[i] & WM3_LP_EN) |
| 2755 | val_r1 = r1->wm_lp[i] & WM1_LP_LATENCY_MASK; |
| 2756 | if (r2->wm_lp[i] & WM3_LP_EN) |
| 2757 | val_r2 = r2->wm_lp[i] & WM1_LP_LATENCY_MASK; |
| 2758 | } |
| 2759 | |
| 2760 | if (val_r1 == val_r2) { |
| 2761 | if (r2->enable_fbc_wm && !r1->enable_fbc_wm) |
| 2762 | return r2; |
| 2763 | else |
| 2764 | return r1; |
| 2765 | } else if (val_r1 > val_r2) { |
| 2766 | return r1; |
| 2767 | } else { |
| 2768 | return r2; |
| 2769 | } |
| 2770 | } |
| 2771 | |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2772 | /* |
| 2773 | * The spec says we shouldn't write when we don't need, because every write |
| 2774 | * causes WMs to be re-evaluated, expending some power. |
| 2775 | */ |
| 2776 | static void hsw_write_wm_values(struct drm_i915_private *dev_priv, |
| 2777 | struct hsw_wm_values *results, |
Ville Syrjälä | 77c122b | 2013-08-06 22:24:04 +0300 | [diff] [blame] | 2778 | enum intel_ddb_partitioning partitioning) |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2779 | { |
| 2780 | struct hsw_wm_values previous; |
| 2781 | uint32_t val; |
Ville Syrjälä | 77c122b | 2013-08-06 22:24:04 +0300 | [diff] [blame] | 2782 | enum intel_ddb_partitioning prev_partitioning; |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2783 | bool prev_enable_fbc_wm; |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2784 | |
| 2785 | previous.wm_pipe[0] = I915_READ(WM0_PIPEA_ILK); |
| 2786 | previous.wm_pipe[1] = I915_READ(WM0_PIPEB_ILK); |
| 2787 | previous.wm_pipe[2] = I915_READ(WM0_PIPEC_IVB); |
| 2788 | previous.wm_lp[0] = I915_READ(WM1_LP_ILK); |
| 2789 | previous.wm_lp[1] = I915_READ(WM2_LP_ILK); |
| 2790 | previous.wm_lp[2] = I915_READ(WM3_LP_ILK); |
| 2791 | previous.wm_lp_spr[0] = I915_READ(WM1S_LP_ILK); |
| 2792 | previous.wm_lp_spr[1] = I915_READ(WM2S_LP_IVB); |
| 2793 | previous.wm_lp_spr[2] = I915_READ(WM3S_LP_IVB); |
| 2794 | previous.wm_linetime[0] = I915_READ(PIPE_WM_LINETIME(PIPE_A)); |
| 2795 | previous.wm_linetime[1] = I915_READ(PIPE_WM_LINETIME(PIPE_B)); |
| 2796 | previous.wm_linetime[2] = I915_READ(PIPE_WM_LINETIME(PIPE_C)); |
| 2797 | |
| 2798 | prev_partitioning = (I915_READ(WM_MISC) & WM_MISC_DATA_PARTITION_5_6) ? |
Ville Syrjälä | 77c122b | 2013-08-06 22:24:04 +0300 | [diff] [blame] | 2799 | INTEL_DDB_PART_5_6 : INTEL_DDB_PART_1_2; |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2800 | |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2801 | prev_enable_fbc_wm = !(I915_READ(DISP_ARB_CTL) & DISP_FBC_WM_DIS); |
| 2802 | |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2803 | if (memcmp(results->wm_pipe, previous.wm_pipe, |
| 2804 | sizeof(results->wm_pipe)) == 0 && |
| 2805 | memcmp(results->wm_lp, previous.wm_lp, |
| 2806 | sizeof(results->wm_lp)) == 0 && |
| 2807 | memcmp(results->wm_lp_spr, previous.wm_lp_spr, |
| 2808 | sizeof(results->wm_lp_spr)) == 0 && |
| 2809 | memcmp(results->wm_linetime, previous.wm_linetime, |
| 2810 | sizeof(results->wm_linetime)) == 0 && |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2811 | partitioning == prev_partitioning && |
| 2812 | results->enable_fbc_wm == prev_enable_fbc_wm) |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2813 | return; |
| 2814 | |
| 2815 | if (previous.wm_lp[2] != 0) |
| 2816 | I915_WRITE(WM3_LP_ILK, 0); |
| 2817 | if (previous.wm_lp[1] != 0) |
| 2818 | I915_WRITE(WM2_LP_ILK, 0); |
| 2819 | if (previous.wm_lp[0] != 0) |
| 2820 | I915_WRITE(WM1_LP_ILK, 0); |
| 2821 | |
| 2822 | if (previous.wm_pipe[0] != results->wm_pipe[0]) |
| 2823 | I915_WRITE(WM0_PIPEA_ILK, results->wm_pipe[0]); |
| 2824 | if (previous.wm_pipe[1] != results->wm_pipe[1]) |
| 2825 | I915_WRITE(WM0_PIPEB_ILK, results->wm_pipe[1]); |
| 2826 | if (previous.wm_pipe[2] != results->wm_pipe[2]) |
| 2827 | I915_WRITE(WM0_PIPEC_IVB, results->wm_pipe[2]); |
| 2828 | |
| 2829 | if (previous.wm_linetime[0] != results->wm_linetime[0]) |
| 2830 | I915_WRITE(PIPE_WM_LINETIME(PIPE_A), results->wm_linetime[0]); |
| 2831 | if (previous.wm_linetime[1] != results->wm_linetime[1]) |
| 2832 | I915_WRITE(PIPE_WM_LINETIME(PIPE_B), results->wm_linetime[1]); |
| 2833 | if (previous.wm_linetime[2] != results->wm_linetime[2]) |
| 2834 | I915_WRITE(PIPE_WM_LINETIME(PIPE_C), results->wm_linetime[2]); |
| 2835 | |
| 2836 | if (prev_partitioning != partitioning) { |
| 2837 | val = I915_READ(WM_MISC); |
Ville Syrjälä | 77c122b | 2013-08-06 22:24:04 +0300 | [diff] [blame] | 2838 | if (partitioning == INTEL_DDB_PART_1_2) |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2839 | val &= ~WM_MISC_DATA_PARTITION_5_6; |
| 2840 | else |
| 2841 | val |= WM_MISC_DATA_PARTITION_5_6; |
| 2842 | I915_WRITE(WM_MISC, val); |
Paulo Zanoni | 1011d8c | 2013-05-09 16:55:50 -0300 | [diff] [blame] | 2843 | } |
| 2844 | |
Paulo Zanoni | cca32e9 | 2013-05-31 11:45:06 -0300 | [diff] [blame] | 2845 | if (prev_enable_fbc_wm != results->enable_fbc_wm) { |
| 2846 | val = I915_READ(DISP_ARB_CTL); |
| 2847 | if (results->enable_fbc_wm) |
| 2848 | val &= ~DISP_FBC_WM_DIS; |
| 2849 | else |
| 2850 | val |= DISP_FBC_WM_DIS; |
| 2851 | I915_WRITE(DISP_ARB_CTL, val); |
| 2852 | } |
| 2853 | |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2854 | if (previous.wm_lp_spr[0] != results->wm_lp_spr[0]) |
| 2855 | I915_WRITE(WM1S_LP_ILK, results->wm_lp_spr[0]); |
| 2856 | if (previous.wm_lp_spr[1] != results->wm_lp_spr[1]) |
| 2857 | I915_WRITE(WM2S_LP_IVB, results->wm_lp_spr[1]); |
| 2858 | if (previous.wm_lp_spr[2] != results->wm_lp_spr[2]) |
| 2859 | I915_WRITE(WM3S_LP_IVB, results->wm_lp_spr[2]); |
| 2860 | |
| 2861 | if (results->wm_lp[0] != 0) |
| 2862 | I915_WRITE(WM1_LP_ILK, results->wm_lp[0]); |
| 2863 | if (results->wm_lp[1] != 0) |
| 2864 | I915_WRITE(WM2_LP_ILK, results->wm_lp[1]); |
| 2865 | if (results->wm_lp[2] != 0) |
| 2866 | I915_WRITE(WM3_LP_ILK, results->wm_lp[2]); |
| 2867 | } |
| 2868 | |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 2869 | static void haswell_update_wm(struct drm_crtc *crtc) |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2870 | { |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 2871 | struct drm_device *dev = crtc->dev; |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2872 | struct drm_i915_private *dev_priv = dev->dev_private; |
Paulo Zanoni | 861f338 | 2013-05-31 10:19:21 -0300 | [diff] [blame] | 2873 | struct hsw_wm_maximums lp_max_1_2, lp_max_5_6; |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2874 | struct hsw_pipe_wm_parameters params[3]; |
Paulo Zanoni | 861f338 | 2013-05-31 10:19:21 -0300 | [diff] [blame] | 2875 | struct hsw_wm_values results_1_2, results_5_6, *best_results; |
Ville Syrjälä | 77c122b | 2013-08-06 22:24:04 +0300 | [diff] [blame] | 2876 | enum intel_ddb_partitioning partitioning; |
Paulo Zanoni | 801bcff | 2013-05-31 10:08:35 -0300 | [diff] [blame] | 2877 | |
Ville Syrjälä | 12b134d | 2013-07-05 11:57:21 +0300 | [diff] [blame] | 2878 | hsw_compute_wm_parameters(dev, params, &lp_max_1_2, &lp_max_5_6); |
Paulo Zanoni | 861f338 | 2013-05-31 10:19:21 -0300 | [diff] [blame] | 2879 | |
Ville Syrjälä | 53615a5 | 2013-08-01 16:18:50 +0300 | [diff] [blame] | 2880 | hsw_compute_wm_results(dev, params, |
Ville Syrjälä | 53615a5 | 2013-08-01 16:18:50 +0300 | [diff] [blame] | 2881 | &lp_max_1_2, &results_1_2); |
Paulo Zanoni | 861f338 | 2013-05-31 10:19:21 -0300 | [diff] [blame] | 2882 | if (lp_max_1_2.pri != lp_max_5_6.pri) { |
Ville Syrjälä | 53615a5 | 2013-08-01 16:18:50 +0300 | [diff] [blame] | 2883 | hsw_compute_wm_results(dev, params, |
Ville Syrjälä | 53615a5 | 2013-08-01 16:18:50 +0300 | [diff] [blame] | 2884 | &lp_max_5_6, &results_5_6); |
Paulo Zanoni | 861f338 | 2013-05-31 10:19:21 -0300 | [diff] [blame] | 2885 | best_results = hsw_find_best_result(&results_1_2, &results_5_6); |
| 2886 | } else { |
| 2887 | best_results = &results_1_2; |
| 2888 | } |
| 2889 | |
| 2890 | partitioning = (best_results == &results_1_2) ? |
Ville Syrjälä | 77c122b | 2013-08-06 22:24:04 +0300 | [diff] [blame] | 2891 | INTEL_DDB_PART_1_2 : INTEL_DDB_PART_5_6; |
Paulo Zanoni | 861f338 | 2013-05-31 10:19:21 -0300 | [diff] [blame] | 2892 | |
| 2893 | hsw_write_wm_values(dev_priv, best_results, partitioning); |
Paulo Zanoni | 1011d8c | 2013-05-09 16:55:50 -0300 | [diff] [blame] | 2894 | } |
| 2895 | |
Ville Syrjälä | adf3d35 | 2013-08-06 22:24:11 +0300 | [diff] [blame] | 2896 | static void haswell_update_sprite_wm(struct drm_plane *plane, |
| 2897 | struct drm_crtc *crtc, |
Paulo Zanoni | 526682e | 2013-05-24 11:59:18 -0300 | [diff] [blame] | 2898 | uint32_t sprite_width, int pixel_size, |
Ville Syrjälä | bdd57d0 | 2013-07-05 11:57:13 +0300 | [diff] [blame] | 2899 | bool enabled, bool scaled) |
Paulo Zanoni | 526682e | 2013-05-24 11:59:18 -0300 | [diff] [blame] | 2900 | { |
Ville Syrjälä | adf3d35 | 2013-08-06 22:24:11 +0300 | [diff] [blame] | 2901 | struct intel_plane *intel_plane = to_intel_plane(plane); |
Paulo Zanoni | 526682e | 2013-05-24 11:59:18 -0300 | [diff] [blame] | 2902 | |
Ville Syrjälä | adf3d35 | 2013-08-06 22:24:11 +0300 | [diff] [blame] | 2903 | intel_plane->wm.enabled = enabled; |
| 2904 | intel_plane->wm.scaled = scaled; |
| 2905 | intel_plane->wm.horiz_pixels = sprite_width; |
| 2906 | intel_plane->wm.bytes_per_pixel = pixel_size; |
Paulo Zanoni | 526682e | 2013-05-24 11:59:18 -0300 | [diff] [blame] | 2907 | |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 2908 | haswell_update_wm(crtc); |
Paulo Zanoni | 526682e | 2013-05-24 11:59:18 -0300 | [diff] [blame] | 2909 | } |
| 2910 | |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 2911 | static bool |
| 2912 | sandybridge_compute_sprite_wm(struct drm_device *dev, int plane, |
| 2913 | uint32_t sprite_width, int pixel_size, |
| 2914 | const struct intel_watermark_params *display, |
| 2915 | int display_latency_ns, int *sprite_wm) |
| 2916 | { |
| 2917 | struct drm_crtc *crtc; |
| 2918 | int clock; |
| 2919 | int entries, tlb_miss; |
| 2920 | |
| 2921 | crtc = intel_get_crtc_for_plane(dev, plane); |
Chris Wilson | 3490ea5 | 2013-01-07 10:11:40 +0000 | [diff] [blame] | 2922 | if (!intel_crtc_active(crtc)) { |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 2923 | *sprite_wm = display->guard_size; |
| 2924 | return false; |
| 2925 | } |
| 2926 | |
Ville Syrjälä | 4fe8590 | 2013-09-04 18:25:22 +0300 | [diff] [blame^] | 2927 | clock = to_intel_crtc(crtc)->config.adjusted_mode.clock; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 2928 | |
| 2929 | /* Use the small buffer method to calculate the sprite watermark */ |
| 2930 | entries = ((clock * pixel_size / 1000) * display_latency_ns) / 1000; |
| 2931 | tlb_miss = display->fifo_size*display->cacheline_size - |
| 2932 | sprite_width * 8; |
| 2933 | if (tlb_miss > 0) |
| 2934 | entries += tlb_miss; |
| 2935 | entries = DIV_ROUND_UP(entries, display->cacheline_size); |
| 2936 | *sprite_wm = entries + display->guard_size; |
| 2937 | if (*sprite_wm > (int)display->max_wm) |
| 2938 | *sprite_wm = display->max_wm; |
| 2939 | |
| 2940 | return true; |
| 2941 | } |
| 2942 | |
| 2943 | static bool |
| 2944 | sandybridge_compute_sprite_srwm(struct drm_device *dev, int plane, |
| 2945 | uint32_t sprite_width, int pixel_size, |
| 2946 | const struct intel_watermark_params *display, |
| 2947 | int latency_ns, int *sprite_wm) |
| 2948 | { |
| 2949 | struct drm_crtc *crtc; |
| 2950 | unsigned long line_time_us; |
| 2951 | int clock; |
| 2952 | int line_count, line_size; |
| 2953 | int small, large; |
| 2954 | int entries; |
| 2955 | |
| 2956 | if (!latency_ns) { |
| 2957 | *sprite_wm = 0; |
| 2958 | return false; |
| 2959 | } |
| 2960 | |
| 2961 | crtc = intel_get_crtc_for_plane(dev, plane); |
Ville Syrjälä | 4fe8590 | 2013-09-04 18:25:22 +0300 | [diff] [blame^] | 2962 | clock = to_intel_crtc(crtc)->config.adjusted_mode.clock; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 2963 | if (!clock) { |
| 2964 | *sprite_wm = 0; |
| 2965 | return false; |
| 2966 | } |
| 2967 | |
| 2968 | line_time_us = (sprite_width * 1000) / clock; |
| 2969 | if (!line_time_us) { |
| 2970 | *sprite_wm = 0; |
| 2971 | return false; |
| 2972 | } |
| 2973 | |
| 2974 | line_count = (latency_ns / line_time_us + 1000) / 1000; |
| 2975 | line_size = sprite_width * pixel_size; |
| 2976 | |
| 2977 | /* Use the minimum of the small and large buffer method for primary */ |
| 2978 | small = ((clock * pixel_size / 1000) * latency_ns) / 1000; |
| 2979 | large = line_count * line_size; |
| 2980 | |
| 2981 | entries = DIV_ROUND_UP(min(small, large), display->cacheline_size); |
| 2982 | *sprite_wm = entries + display->guard_size; |
| 2983 | |
| 2984 | return *sprite_wm > 0x3ff ? false : true; |
| 2985 | } |
| 2986 | |
Ville Syrjälä | adf3d35 | 2013-08-06 22:24:11 +0300 | [diff] [blame] | 2987 | static void sandybridge_update_sprite_wm(struct drm_plane *plane, |
| 2988 | struct drm_crtc *crtc, |
Paulo Zanoni | 4c4ff43 | 2013-05-24 11:59:17 -0300 | [diff] [blame] | 2989 | uint32_t sprite_width, int pixel_size, |
Ville Syrjälä | 39db4a4 | 2013-08-06 22:24:00 +0300 | [diff] [blame] | 2990 | bool enabled, bool scaled) |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 2991 | { |
Ville Syrjälä | adf3d35 | 2013-08-06 22:24:11 +0300 | [diff] [blame] | 2992 | struct drm_device *dev = plane->dev; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 2993 | struct drm_i915_private *dev_priv = dev->dev_private; |
Ville Syrjälä | adf3d35 | 2013-08-06 22:24:11 +0300 | [diff] [blame] | 2994 | int pipe = to_intel_plane(plane)->pipe; |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 2995 | int latency = dev_priv->wm.spr_latency[0] * 100; /* In unit 0.1us */ |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 2996 | u32 val; |
| 2997 | int sprite_wm, reg; |
| 2998 | int ret; |
| 2999 | |
Ville Syrjälä | 39db4a4 | 2013-08-06 22:24:00 +0300 | [diff] [blame] | 3000 | if (!enabled) |
Paulo Zanoni | 4c4ff43 | 2013-05-24 11:59:17 -0300 | [diff] [blame] | 3001 | return; |
| 3002 | |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 3003 | switch (pipe) { |
| 3004 | case 0: |
| 3005 | reg = WM0_PIPEA_ILK; |
| 3006 | break; |
| 3007 | case 1: |
| 3008 | reg = WM0_PIPEB_ILK; |
| 3009 | break; |
| 3010 | case 2: |
| 3011 | reg = WM0_PIPEC_IVB; |
| 3012 | break; |
| 3013 | default: |
| 3014 | return; /* bad pipe */ |
| 3015 | } |
| 3016 | |
| 3017 | ret = sandybridge_compute_sprite_wm(dev, pipe, sprite_width, pixel_size, |
| 3018 | &sandybridge_display_wm_info, |
| 3019 | latency, &sprite_wm); |
| 3020 | if (!ret) { |
Ville Syrjälä | 84f44ce | 2013-04-17 17:48:49 +0300 | [diff] [blame] | 3021 | DRM_DEBUG_KMS("failed to compute sprite wm for pipe %c\n", |
| 3022 | pipe_name(pipe)); |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 3023 | return; |
| 3024 | } |
| 3025 | |
| 3026 | val = I915_READ(reg); |
| 3027 | val &= ~WM0_PIPE_SPRITE_MASK; |
| 3028 | I915_WRITE(reg, val | (sprite_wm << WM0_PIPE_SPRITE_SHIFT)); |
Ville Syrjälä | 84f44ce | 2013-04-17 17:48:49 +0300 | [diff] [blame] | 3029 | DRM_DEBUG_KMS("sprite watermarks For pipe %c - %d\n", pipe_name(pipe), sprite_wm); |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 3030 | |
| 3031 | |
| 3032 | ret = sandybridge_compute_sprite_srwm(dev, pipe, sprite_width, |
| 3033 | pixel_size, |
| 3034 | &sandybridge_display_srwm_info, |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 3035 | dev_priv->wm.spr_latency[1] * 500, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 3036 | &sprite_wm); |
| 3037 | if (!ret) { |
Ville Syrjälä | 84f44ce | 2013-04-17 17:48:49 +0300 | [diff] [blame] | 3038 | DRM_DEBUG_KMS("failed to compute sprite lp1 wm on pipe %c\n", |
| 3039 | pipe_name(pipe)); |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 3040 | return; |
| 3041 | } |
| 3042 | I915_WRITE(WM1S_LP_ILK, sprite_wm); |
| 3043 | |
| 3044 | /* Only IVB has two more LP watermarks for sprite */ |
| 3045 | if (!IS_IVYBRIDGE(dev)) |
| 3046 | return; |
| 3047 | |
| 3048 | ret = sandybridge_compute_sprite_srwm(dev, pipe, sprite_width, |
| 3049 | pixel_size, |
| 3050 | &sandybridge_display_srwm_info, |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 3051 | dev_priv->wm.spr_latency[2] * 500, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 3052 | &sprite_wm); |
| 3053 | if (!ret) { |
Ville Syrjälä | 84f44ce | 2013-04-17 17:48:49 +0300 | [diff] [blame] | 3054 | DRM_DEBUG_KMS("failed to compute sprite lp2 wm on pipe %c\n", |
| 3055 | pipe_name(pipe)); |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 3056 | return; |
| 3057 | } |
| 3058 | I915_WRITE(WM2S_LP_IVB, sprite_wm); |
| 3059 | |
| 3060 | ret = sandybridge_compute_sprite_srwm(dev, pipe, sprite_width, |
| 3061 | pixel_size, |
| 3062 | &sandybridge_display_srwm_info, |
Ville Syrjälä | b0aea5d | 2013-08-01 16:18:54 +0300 | [diff] [blame] | 3063 | dev_priv->wm.spr_latency[3] * 500, |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 3064 | &sprite_wm); |
| 3065 | if (!ret) { |
Ville Syrjälä | 84f44ce | 2013-04-17 17:48:49 +0300 | [diff] [blame] | 3066 | DRM_DEBUG_KMS("failed to compute sprite lp3 wm on pipe %c\n", |
| 3067 | pipe_name(pipe)); |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 3068 | return; |
| 3069 | } |
| 3070 | I915_WRITE(WM3S_LP_IVB, sprite_wm); |
| 3071 | } |
| 3072 | |
| 3073 | /** |
| 3074 | * intel_update_watermarks - update FIFO watermark values based on current modes |
| 3075 | * |
| 3076 | * Calculate watermark values for the various WM regs based on current mode |
| 3077 | * and plane configuration. |
| 3078 | * |
| 3079 | * There are several cases to deal with here: |
| 3080 | * - normal (i.e. non-self-refresh) |
| 3081 | * - self-refresh (SR) mode |
| 3082 | * - lines are large relative to FIFO size (buffer can hold up to 2) |
| 3083 | * - lines are small relative to FIFO size (buffer can hold more than 2 |
| 3084 | * lines), so need to account for TLB latency |
| 3085 | * |
| 3086 | * The normal calculation is: |
| 3087 | * watermark = dotclock * bytes per pixel * latency |
| 3088 | * where latency is platform & configuration dependent (we assume pessimal |
| 3089 | * values here). |
| 3090 | * |
| 3091 | * The SR calculation is: |
| 3092 | * watermark = (trunc(latency/line time)+1) * surface width * |
| 3093 | * bytes per pixel |
| 3094 | * where |
| 3095 | * line time = htotal / dotclock |
| 3096 | * surface width = hdisplay for normal plane and 64 for cursor |
| 3097 | * and latency is assumed to be high, as above. |
| 3098 | * |
| 3099 | * The final value programmed to the register should always be rounded up, |
| 3100 | * and include an extra 2 entries to account for clock crossings. |
| 3101 | * |
| 3102 | * We don't use the sprite, so we can ignore that. And on Crestline we have |
| 3103 | * to set the non-SR watermarks to 8. |
| 3104 | */ |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 3105 | void intel_update_watermarks(struct drm_crtc *crtc) |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 3106 | { |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 3107 | struct drm_i915_private *dev_priv = crtc->dev->dev_private; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 3108 | |
| 3109 | if (dev_priv->display.update_wm) |
Ville Syrjälä | 46ba614 | 2013-09-10 11:40:40 +0300 | [diff] [blame] | 3110 | dev_priv->display.update_wm(crtc); |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 3111 | } |
| 3112 | |
Ville Syrjälä | adf3d35 | 2013-08-06 22:24:11 +0300 | [diff] [blame] | 3113 | void intel_update_sprite_watermarks(struct drm_plane *plane, |
| 3114 | struct drm_crtc *crtc, |
Paulo Zanoni | 4c4ff43 | 2013-05-24 11:59:17 -0300 | [diff] [blame] | 3115 | uint32_t sprite_width, int pixel_size, |
Ville Syrjälä | 39db4a4 | 2013-08-06 22:24:00 +0300 | [diff] [blame] | 3116 | bool enabled, bool scaled) |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 3117 | { |
Ville Syrjälä | adf3d35 | 2013-08-06 22:24:11 +0300 | [diff] [blame] | 3118 | struct drm_i915_private *dev_priv = plane->dev->dev_private; |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 3119 | |
| 3120 | if (dev_priv->display.update_sprite_wm) |
Ville Syrjälä | adf3d35 | 2013-08-06 22:24:11 +0300 | [diff] [blame] | 3121 | dev_priv->display.update_sprite_wm(plane, crtc, sprite_width, |
Ville Syrjälä | 39db4a4 | 2013-08-06 22:24:00 +0300 | [diff] [blame] | 3122 | pixel_size, enabled, scaled); |
Eugeni Dodonov | b445e3b | 2012-04-16 22:20:35 -0300 | [diff] [blame] | 3123 | } |
| 3124 | |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3125 | static struct drm_i915_gem_object * |
| 3126 | intel_alloc_context_page(struct drm_device *dev) |
| 3127 | { |
| 3128 | struct drm_i915_gem_object *ctx; |
| 3129 | int ret; |
| 3130 | |
| 3131 | WARN_ON(!mutex_is_locked(&dev->struct_mutex)); |
| 3132 | |
| 3133 | ctx = i915_gem_alloc_object(dev, 4096); |
| 3134 | if (!ctx) { |
| 3135 | DRM_DEBUG("failed to alloc power context, RC6 disabled\n"); |
| 3136 | return NULL; |
| 3137 | } |
| 3138 | |
Ben Widawsky | c37e220 | 2013-07-31 16:59:58 -0700 | [diff] [blame] | 3139 | ret = i915_gem_obj_ggtt_pin(ctx, 4096, true, false); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3140 | if (ret) { |
| 3141 | DRM_ERROR("failed to pin power context: %d\n", ret); |
| 3142 | goto err_unref; |
| 3143 | } |
| 3144 | |
| 3145 | ret = i915_gem_object_set_to_gtt_domain(ctx, 1); |
| 3146 | if (ret) { |
| 3147 | DRM_ERROR("failed to set-domain on power context: %d\n", ret); |
| 3148 | goto err_unpin; |
| 3149 | } |
| 3150 | |
| 3151 | return ctx; |
| 3152 | |
| 3153 | err_unpin: |
| 3154 | i915_gem_object_unpin(ctx); |
| 3155 | err_unref: |
| 3156 | drm_gem_object_unreference(&ctx->base); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3157 | return NULL; |
| 3158 | } |
| 3159 | |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 3160 | /** |
| 3161 | * Lock protecting IPS related data structures |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 3162 | */ |
| 3163 | DEFINE_SPINLOCK(mchdev_lock); |
| 3164 | |
| 3165 | /* Global for IPS driver to get at the current i915 device. Protected by |
| 3166 | * mchdev_lock. */ |
| 3167 | static struct drm_i915_private *i915_mch_dev; |
| 3168 | |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3169 | bool ironlake_set_drps(struct drm_device *dev, u8 val) |
| 3170 | { |
| 3171 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 3172 | u16 rgvswctl; |
| 3173 | |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 3174 | assert_spin_locked(&mchdev_lock); |
| 3175 | |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3176 | rgvswctl = I915_READ16(MEMSWCTL); |
| 3177 | if (rgvswctl & MEMCTL_CMD_STS) { |
| 3178 | DRM_DEBUG("gpu busy, RCS change rejected\n"); |
| 3179 | return false; /* still busy with another command */ |
| 3180 | } |
| 3181 | |
| 3182 | rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) | |
| 3183 | (val << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM; |
| 3184 | I915_WRITE16(MEMSWCTL, rgvswctl); |
| 3185 | POSTING_READ16(MEMSWCTL); |
| 3186 | |
| 3187 | rgvswctl |= MEMCTL_CMD_STS; |
| 3188 | I915_WRITE16(MEMSWCTL, rgvswctl); |
| 3189 | |
| 3190 | return true; |
| 3191 | } |
| 3192 | |
Daniel Vetter | 8090c6b | 2012-06-24 16:42:32 +0200 | [diff] [blame] | 3193 | static void ironlake_enable_drps(struct drm_device *dev) |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3194 | { |
| 3195 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 3196 | u32 rgvmodectl = I915_READ(MEMMODECTL); |
| 3197 | u8 fmax, fmin, fstart, vstart; |
| 3198 | |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 3199 | spin_lock_irq(&mchdev_lock); |
| 3200 | |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3201 | /* Enable temp reporting */ |
| 3202 | I915_WRITE16(PMMISC, I915_READ(PMMISC) | MCPPCE_EN); |
| 3203 | I915_WRITE16(TSC1, I915_READ(TSC1) | TSE); |
| 3204 | |
| 3205 | /* 100ms RC evaluation intervals */ |
| 3206 | I915_WRITE(RCUPEI, 100000); |
| 3207 | I915_WRITE(RCDNEI, 100000); |
| 3208 | |
| 3209 | /* Set max/min thresholds to 90ms and 80ms respectively */ |
| 3210 | I915_WRITE(RCBMAXAVG, 90000); |
| 3211 | I915_WRITE(RCBMINAVG, 80000); |
| 3212 | |
| 3213 | I915_WRITE(MEMIHYST, 1); |
| 3214 | |
| 3215 | /* Set up min, max, and cur for interrupt handling */ |
| 3216 | fmax = (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT; |
| 3217 | fmin = (rgvmodectl & MEMMODE_FMIN_MASK); |
| 3218 | fstart = (rgvmodectl & MEMMODE_FSTART_MASK) >> |
| 3219 | MEMMODE_FSTART_SHIFT; |
| 3220 | |
| 3221 | vstart = (I915_READ(PXVFREQ_BASE + (fstart * 4)) & PXVFREQ_PX_MASK) >> |
| 3222 | PXVFREQ_PX_SHIFT; |
| 3223 | |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 3224 | dev_priv->ips.fmax = fmax; /* IPS callback will increase this */ |
| 3225 | dev_priv->ips.fstart = fstart; |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3226 | |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 3227 | dev_priv->ips.max_delay = fstart; |
| 3228 | dev_priv->ips.min_delay = fmin; |
| 3229 | dev_priv->ips.cur_delay = fstart; |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3230 | |
| 3231 | DRM_DEBUG_DRIVER("fmax: %d, fmin: %d, fstart: %d\n", |
| 3232 | fmax, fmin, fstart); |
| 3233 | |
| 3234 | I915_WRITE(MEMINTREN, MEMINT_CX_SUPR_EN | MEMINT_EVAL_CHG_EN); |
| 3235 | |
| 3236 | /* |
| 3237 | * Interrupts will be enabled in ironlake_irq_postinstall |
| 3238 | */ |
| 3239 | |
| 3240 | I915_WRITE(VIDSTART, vstart); |
| 3241 | POSTING_READ(VIDSTART); |
| 3242 | |
| 3243 | rgvmodectl |= MEMMODE_SWMODE_EN; |
| 3244 | I915_WRITE(MEMMODECTL, rgvmodectl); |
| 3245 | |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 3246 | if (wait_for_atomic((I915_READ(MEMSWCTL) & MEMCTL_CMD_STS) == 0, 10)) |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3247 | DRM_ERROR("stuck trying to change perf mode\n"); |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 3248 | mdelay(1); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3249 | |
| 3250 | ironlake_set_drps(dev, fstart); |
| 3251 | |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 3252 | dev_priv->ips.last_count1 = I915_READ(0x112e4) + I915_READ(0x112e8) + |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3253 | I915_READ(0x112e0); |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 3254 | dev_priv->ips.last_time1 = jiffies_to_msecs(jiffies); |
| 3255 | dev_priv->ips.last_count2 = I915_READ(0x112f4); |
| 3256 | getrawmonotonic(&dev_priv->ips.last_time2); |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 3257 | |
| 3258 | spin_unlock_irq(&mchdev_lock); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3259 | } |
| 3260 | |
Daniel Vetter | 8090c6b | 2012-06-24 16:42:32 +0200 | [diff] [blame] | 3261 | static void ironlake_disable_drps(struct drm_device *dev) |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3262 | { |
| 3263 | struct drm_i915_private *dev_priv = dev->dev_private; |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 3264 | u16 rgvswctl; |
| 3265 | |
| 3266 | spin_lock_irq(&mchdev_lock); |
| 3267 | |
| 3268 | rgvswctl = I915_READ16(MEMSWCTL); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3269 | |
| 3270 | /* Ack interrupts, disable EFC interrupt */ |
| 3271 | I915_WRITE(MEMINTREN, I915_READ(MEMINTREN) & ~MEMINT_EVAL_CHG_EN); |
| 3272 | I915_WRITE(MEMINTRSTS, MEMINT_EVAL_CHG); |
| 3273 | I915_WRITE(DEIER, I915_READ(DEIER) & ~DE_PCU_EVENT); |
| 3274 | I915_WRITE(DEIIR, DE_PCU_EVENT); |
| 3275 | I915_WRITE(DEIMR, I915_READ(DEIMR) | DE_PCU_EVENT); |
| 3276 | |
| 3277 | /* Go back to the starting frequency */ |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 3278 | ironlake_set_drps(dev, dev_priv->ips.fstart); |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 3279 | mdelay(1); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3280 | rgvswctl |= MEMCTL_CMD_STS; |
| 3281 | I915_WRITE(MEMSWCTL, rgvswctl); |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 3282 | mdelay(1); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3283 | |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 3284 | spin_unlock_irq(&mchdev_lock); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3285 | } |
| 3286 | |
Daniel Vetter | acbe947 | 2012-07-26 11:50:05 +0200 | [diff] [blame] | 3287 | /* There's a funny hw issue where the hw returns all 0 when reading from |
| 3288 | * GEN6_RP_INTERRUPT_LIMITS. Hence we always need to compute the desired value |
| 3289 | * ourselves, instead of doing a rmw cycle (which might result in us clearing |
| 3290 | * all limits and the gpu stuck at whatever frequency it is at atm). |
| 3291 | */ |
Daniel Vetter | 65bccb5 | 2012-08-08 17:42:52 +0200 | [diff] [blame] | 3292 | static u32 gen6_rps_limits(struct drm_i915_private *dev_priv, u8 *val) |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3293 | { |
Chris Wilson | 7b9e0ae | 2012-04-28 08:56:39 +0100 | [diff] [blame] | 3294 | u32 limits; |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3295 | |
Chris Wilson | 7b9e0ae | 2012-04-28 08:56:39 +0100 | [diff] [blame] | 3296 | limits = 0; |
Daniel Vetter | c6a828d | 2012-08-08 23:35:35 +0200 | [diff] [blame] | 3297 | |
| 3298 | if (*val >= dev_priv->rps.max_delay) |
| 3299 | *val = dev_priv->rps.max_delay; |
| 3300 | limits |= dev_priv->rps.max_delay << 24; |
Chris Wilson | 7b9e0ae | 2012-04-28 08:56:39 +0100 | [diff] [blame] | 3301 | |
Daniel Vetter | 20b46e5 | 2012-07-26 11:16:14 +0200 | [diff] [blame] | 3302 | /* Only set the down limit when we've reached the lowest level to avoid |
| 3303 | * getting more interrupts, otherwise leave this clear. This prevents a |
| 3304 | * race in the hw when coming out of rc6: There's a tiny window where |
| 3305 | * the hw runs at the minimal clock before selecting the desired |
| 3306 | * frequency, if the down threshold expires in that window we will not |
| 3307 | * receive a down interrupt. */ |
Daniel Vetter | c6a828d | 2012-08-08 23:35:35 +0200 | [diff] [blame] | 3308 | if (*val <= dev_priv->rps.min_delay) { |
| 3309 | *val = dev_priv->rps.min_delay; |
| 3310 | limits |= dev_priv->rps.min_delay << 16; |
Daniel Vetter | 20b46e5 | 2012-07-26 11:16:14 +0200 | [diff] [blame] | 3311 | } |
| 3312 | |
| 3313 | return limits; |
| 3314 | } |
| 3315 | |
| 3316 | void gen6_set_rps(struct drm_device *dev, u8 val) |
| 3317 | { |
| 3318 | struct drm_i915_private *dev_priv = dev->dev_private; |
Daniel Vetter | 65bccb5 | 2012-08-08 17:42:52 +0200 | [diff] [blame] | 3319 | u32 limits = gen6_rps_limits(dev_priv, &val); |
Chris Wilson | 7b9e0ae | 2012-04-28 08:56:39 +0100 | [diff] [blame] | 3320 | |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame] | 3321 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
Ben Widawsky | 7924963 | 2012-09-07 19:43:42 -0700 | [diff] [blame] | 3322 | WARN_ON(val > dev_priv->rps.max_delay); |
| 3323 | WARN_ON(val < dev_priv->rps.min_delay); |
Daniel Vetter | 004777c | 2012-08-09 15:07:01 +0200 | [diff] [blame] | 3324 | |
Daniel Vetter | c6a828d | 2012-08-08 23:35:35 +0200 | [diff] [blame] | 3325 | if (val == dev_priv->rps.cur_delay) |
Chris Wilson | 7b9e0ae | 2012-04-28 08:56:39 +0100 | [diff] [blame] | 3326 | return; |
| 3327 | |
Rodrigo Vivi | 92bd1bf | 2013-03-25 17:55:49 -0300 | [diff] [blame] | 3328 | if (IS_HASWELL(dev)) |
| 3329 | I915_WRITE(GEN6_RPNSWREQ, |
| 3330 | HSW_FREQUENCY(val)); |
| 3331 | else |
| 3332 | I915_WRITE(GEN6_RPNSWREQ, |
| 3333 | GEN6_FREQUENCY(val) | |
| 3334 | GEN6_OFFSET(0) | |
| 3335 | GEN6_AGGRESSIVE_TURBO); |
Chris Wilson | 7b9e0ae | 2012-04-28 08:56:39 +0100 | [diff] [blame] | 3336 | |
| 3337 | /* Make sure we continue to get interrupts |
| 3338 | * until we hit the minimum or maximum frequencies. |
| 3339 | */ |
| 3340 | I915_WRITE(GEN6_RP_INTERRUPT_LIMITS, limits); |
| 3341 | |
Ben Widawsky | d5570a7 | 2012-09-07 19:43:41 -0700 | [diff] [blame] | 3342 | POSTING_READ(GEN6_RPNSWREQ); |
| 3343 | |
Daniel Vetter | c6a828d | 2012-08-08 23:35:35 +0200 | [diff] [blame] | 3344 | dev_priv->rps.cur_delay = val; |
Daniel Vetter | be2cde9 | 2012-08-30 13:26:48 +0200 | [diff] [blame] | 3345 | |
| 3346 | trace_intel_gpu_freq_change(val * 50); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3347 | } |
| 3348 | |
Ville Syrjälä | 80814ae | 2013-06-25 19:21:02 +0300 | [diff] [blame] | 3349 | /* |
| 3350 | * Wait until the previous freq change has completed, |
| 3351 | * or the timeout elapsed, and then update our notion |
| 3352 | * of the current GPU frequency. |
| 3353 | */ |
| 3354 | static void vlv_update_rps_cur_delay(struct drm_i915_private *dev_priv) |
| 3355 | { |
Ville Syrjälä | 80814ae | 2013-06-25 19:21:02 +0300 | [diff] [blame] | 3356 | u32 pval; |
| 3357 | |
| 3358 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
| 3359 | |
Ville Syrjälä | e847440 | 2013-06-26 17:43:24 +0300 | [diff] [blame] | 3360 | if (wait_for(((pval = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS)) & GENFREQSTATUS) == 0, 10)) |
| 3361 | DRM_DEBUG_DRIVER("timed out waiting for Punit\n"); |
Ville Syrjälä | 80814ae | 2013-06-25 19:21:02 +0300 | [diff] [blame] | 3362 | |
| 3363 | pval >>= 8; |
| 3364 | |
| 3365 | if (pval != dev_priv->rps.cur_delay) |
| 3366 | DRM_DEBUG_DRIVER("Punit overrode GPU freq: %d MHz (%u) requested, but got %d Mhz (%u)\n", |
| 3367 | vlv_gpu_freq(dev_priv->mem_freq, dev_priv->rps.cur_delay), |
| 3368 | dev_priv->rps.cur_delay, |
| 3369 | vlv_gpu_freq(dev_priv->mem_freq, pval), pval); |
| 3370 | |
| 3371 | dev_priv->rps.cur_delay = pval; |
| 3372 | } |
| 3373 | |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 3374 | void valleyview_set_rps(struct drm_device *dev, u8 val) |
| 3375 | { |
| 3376 | struct drm_i915_private *dev_priv = dev->dev_private; |
Ville Syrjälä | 7a67092 | 2013-06-25 19:21:06 +0300 | [diff] [blame] | 3377 | |
| 3378 | gen6_rps_limits(dev_priv, &val); |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 3379 | |
| 3380 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
| 3381 | WARN_ON(val > dev_priv->rps.max_delay); |
| 3382 | WARN_ON(val < dev_priv->rps.min_delay); |
| 3383 | |
Ville Syrjälä | 80814ae | 2013-06-25 19:21:02 +0300 | [diff] [blame] | 3384 | vlv_update_rps_cur_delay(dev_priv); |
| 3385 | |
Ville Syrjälä | 73008b9 | 2013-06-25 19:21:01 +0300 | [diff] [blame] | 3386 | DRM_DEBUG_DRIVER("GPU freq request from %d MHz (%u) to %d MHz (%u)\n", |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 3387 | vlv_gpu_freq(dev_priv->mem_freq, |
| 3388 | dev_priv->rps.cur_delay), |
Ville Syrjälä | 73008b9 | 2013-06-25 19:21:01 +0300 | [diff] [blame] | 3389 | dev_priv->rps.cur_delay, |
| 3390 | vlv_gpu_freq(dev_priv->mem_freq, val), val); |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 3391 | |
| 3392 | if (val == dev_priv->rps.cur_delay) |
| 3393 | return; |
| 3394 | |
Jani Nikula | ae99258 | 2013-05-22 15:36:19 +0300 | [diff] [blame] | 3395 | vlv_punit_write(dev_priv, PUNIT_REG_GPU_FREQ_REQ, val); |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 3396 | |
Ville Syrjälä | 80814ae | 2013-06-25 19:21:02 +0300 | [diff] [blame] | 3397 | dev_priv->rps.cur_delay = val; |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 3398 | |
| 3399 | trace_intel_gpu_freq_change(vlv_gpu_freq(dev_priv->mem_freq, val)); |
| 3400 | } |
| 3401 | |
Daniel Vetter | 44fc7d5 | 2013-07-12 22:43:27 +0200 | [diff] [blame] | 3402 | static void gen6_disable_rps_interrupts(struct drm_device *dev) |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3403 | { |
| 3404 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 3405 | |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3406 | I915_WRITE(GEN6_PMINTRMSK, 0xffffffff); |
Ben Widawsky | 4848405 | 2013-05-28 19:22:27 -0700 | [diff] [blame] | 3407 | I915_WRITE(GEN6_PMIER, I915_READ(GEN6_PMIER) & ~GEN6_PM_RPS_EVENTS); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3408 | /* Complete PM interrupt masking here doesn't race with the rps work |
| 3409 | * item again unmasking PM interrupts because that is using a different |
| 3410 | * register (PMIMR) to mask PM interrupts. The only risk is in leaving |
| 3411 | * stale bits in PMIIR and PMIMR which gen6_enable_rps will clean up. */ |
| 3412 | |
Daniel Vetter | 59cdb63 | 2013-07-04 23:35:28 +0200 | [diff] [blame] | 3413 | spin_lock_irq(&dev_priv->irq_lock); |
Daniel Vetter | c6a828d | 2012-08-08 23:35:35 +0200 | [diff] [blame] | 3414 | dev_priv->rps.pm_iir = 0; |
Daniel Vetter | 59cdb63 | 2013-07-04 23:35:28 +0200 | [diff] [blame] | 3415 | spin_unlock_irq(&dev_priv->irq_lock); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3416 | |
Ben Widawsky | 4848405 | 2013-05-28 19:22:27 -0700 | [diff] [blame] | 3417 | I915_WRITE(GEN6_PMIIR, GEN6_PM_RPS_EVENTS); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3418 | } |
| 3419 | |
Daniel Vetter | 44fc7d5 | 2013-07-12 22:43:27 +0200 | [diff] [blame] | 3420 | static void gen6_disable_rps(struct drm_device *dev) |
| 3421 | { |
| 3422 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 3423 | |
| 3424 | I915_WRITE(GEN6_RC_CONTROL, 0); |
| 3425 | I915_WRITE(GEN6_RPNSWREQ, 1 << 31); |
| 3426 | |
| 3427 | gen6_disable_rps_interrupts(dev); |
| 3428 | } |
| 3429 | |
Jesse Barnes | d20d4f0 | 2013-04-23 10:09:28 -0700 | [diff] [blame] | 3430 | static void valleyview_disable_rps(struct drm_device *dev) |
| 3431 | { |
| 3432 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 3433 | |
| 3434 | I915_WRITE(GEN6_RC_CONTROL, 0); |
Jesse Barnes | d20d4f0 | 2013-04-23 10:09:28 -0700 | [diff] [blame] | 3435 | |
Daniel Vetter | 44fc7d5 | 2013-07-12 22:43:27 +0200 | [diff] [blame] | 3436 | gen6_disable_rps_interrupts(dev); |
Jesse Barnes | c9cddff | 2013-05-08 10:45:13 -0700 | [diff] [blame] | 3437 | |
| 3438 | if (dev_priv->vlv_pctx) { |
| 3439 | drm_gem_object_unreference(&dev_priv->vlv_pctx->base); |
| 3440 | dev_priv->vlv_pctx = NULL; |
| 3441 | } |
Jesse Barnes | d20d4f0 | 2013-04-23 10:09:28 -0700 | [diff] [blame] | 3442 | } |
| 3443 | |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3444 | int intel_enable_rc6(const struct drm_device *dev) |
| 3445 | { |
Damien Lespiau | eb4926e | 2013-06-07 17:41:14 +0100 | [diff] [blame] | 3446 | /* No RC6 before Ironlake */ |
| 3447 | if (INTEL_INFO(dev)->gen < 5) |
| 3448 | return 0; |
| 3449 | |
Daniel Vetter | 456470e | 2012-08-08 23:35:40 +0200 | [diff] [blame] | 3450 | /* Respect the kernel parameter if it is set */ |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3451 | if (i915_enable_rc6 >= 0) |
| 3452 | return i915_enable_rc6; |
| 3453 | |
Chris Wilson | 6567d74 | 2012-11-10 10:00:06 +0000 | [diff] [blame] | 3454 | /* Disable RC6 on Ironlake */ |
| 3455 | if (INTEL_INFO(dev)->gen == 5) |
| 3456 | return 0; |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3457 | |
Daniel Vetter | 456470e | 2012-08-08 23:35:40 +0200 | [diff] [blame] | 3458 | if (IS_HASWELL(dev)) { |
| 3459 | DRM_DEBUG_DRIVER("Haswell: only RC6 available\n"); |
| 3460 | return INTEL_RC6_ENABLE; |
| 3461 | } |
| 3462 | |
| 3463 | /* snb/ivb have more than one rc6 state. */ |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3464 | if (INTEL_INFO(dev)->gen == 6) { |
| 3465 | DRM_DEBUG_DRIVER("Sandybridge: deep RC6 disabled\n"); |
| 3466 | return INTEL_RC6_ENABLE; |
| 3467 | } |
Daniel Vetter | 456470e | 2012-08-08 23:35:40 +0200 | [diff] [blame] | 3468 | |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3469 | DRM_DEBUG_DRIVER("RC6 and deep RC6 enabled\n"); |
| 3470 | return (INTEL_RC6_ENABLE | INTEL_RC6p_ENABLE); |
| 3471 | } |
| 3472 | |
Daniel Vetter | 44fc7d5 | 2013-07-12 22:43:27 +0200 | [diff] [blame] | 3473 | static void gen6_enable_rps_interrupts(struct drm_device *dev) |
| 3474 | { |
| 3475 | struct drm_i915_private *dev_priv = dev->dev_private; |
Mika Kuoppala | a9c1f90 | 2013-08-22 21:09:00 +0300 | [diff] [blame] | 3476 | u32 enabled_intrs; |
Daniel Vetter | 44fc7d5 | 2013-07-12 22:43:27 +0200 | [diff] [blame] | 3477 | |
| 3478 | spin_lock_irq(&dev_priv->irq_lock); |
Daniel Vetter | a0b3335 | 2013-07-04 23:35:34 +0200 | [diff] [blame] | 3479 | WARN_ON(dev_priv->rps.pm_iir); |
Paulo Zanoni | edbfdb4 | 2013-08-06 18:57:13 -0300 | [diff] [blame] | 3480 | snb_enable_pm_irq(dev_priv, GEN6_PM_RPS_EVENTS); |
Daniel Vetter | 44fc7d5 | 2013-07-12 22:43:27 +0200 | [diff] [blame] | 3481 | I915_WRITE(GEN6_PMIIR, GEN6_PM_RPS_EVENTS); |
| 3482 | spin_unlock_irq(&dev_priv->irq_lock); |
Mika Kuoppala | a9c1f90 | 2013-08-22 21:09:00 +0300 | [diff] [blame] | 3483 | |
Vinit Azad | fd547d2 | 2013-08-14 13:34:33 -0700 | [diff] [blame] | 3484 | /* only unmask PM interrupts we need. Mask all others. */ |
Mika Kuoppala | a9c1f90 | 2013-08-22 21:09:00 +0300 | [diff] [blame] | 3485 | enabled_intrs = GEN6_PM_RPS_EVENTS; |
| 3486 | |
| 3487 | /* IVB and SNB hard hangs on looping batchbuffer |
| 3488 | * if GEN6_PM_UP_EI_EXPIRED is masked. |
| 3489 | */ |
| 3490 | if (INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev)) |
| 3491 | enabled_intrs |= GEN6_PM_RP_UP_EI_EXPIRED; |
| 3492 | |
| 3493 | I915_WRITE(GEN6_PMINTRMSK, ~enabled_intrs); |
Daniel Vetter | 44fc7d5 | 2013-07-12 22:43:27 +0200 | [diff] [blame] | 3494 | } |
| 3495 | |
Daniel Vetter | 79f5b2c | 2012-06-24 16:42:33 +0200 | [diff] [blame] | 3496 | static void gen6_enable_rps(struct drm_device *dev) |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3497 | { |
Daniel Vetter | 79f5b2c | 2012-06-24 16:42:33 +0200 | [diff] [blame] | 3498 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 3499 | struct intel_ring_buffer *ring; |
Chris Wilson | 7b9e0ae | 2012-04-28 08:56:39 +0100 | [diff] [blame] | 3500 | u32 rp_state_cap; |
| 3501 | u32 gt_perf_status; |
Ben Widawsky | 31643d5 | 2012-09-26 10:34:01 -0700 | [diff] [blame] | 3502 | u32 rc6vids, pcu_mbox, rc6_mask = 0; |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3503 | u32 gtfifodbg; |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3504 | int rc6_mode; |
Ben Widawsky | 42c0526 | 2012-09-26 10:34:00 -0700 | [diff] [blame] | 3505 | int i, ret; |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3506 | |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame] | 3507 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
Daniel Vetter | 79f5b2c | 2012-06-24 16:42:33 +0200 | [diff] [blame] | 3508 | |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3509 | /* Here begins a magic sequence of register writes to enable |
| 3510 | * auto-downclocking. |
| 3511 | * |
| 3512 | * Perhaps there might be some value in exposing these to |
| 3513 | * userspace... |
| 3514 | */ |
| 3515 | I915_WRITE(GEN6_RC_STATE, 0); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3516 | |
| 3517 | /* Clear the DBG now so we don't confuse earlier errors */ |
| 3518 | if ((gtfifodbg = I915_READ(GTFIFODBG))) { |
| 3519 | DRM_ERROR("GT fifo had a previous error %x\n", gtfifodbg); |
| 3520 | I915_WRITE(GTFIFODBG, gtfifodbg); |
| 3521 | } |
| 3522 | |
| 3523 | gen6_gt_force_wake_get(dev_priv); |
| 3524 | |
Chris Wilson | 7b9e0ae | 2012-04-28 08:56:39 +0100 | [diff] [blame] | 3525 | rp_state_cap = I915_READ(GEN6_RP_STATE_CAP); |
| 3526 | gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS); |
| 3527 | |
Ben Widawsky | 31c7738 | 2013-04-05 14:29:22 -0700 | [diff] [blame] | 3528 | /* In units of 50MHz */ |
| 3529 | dev_priv->rps.hw_max = dev_priv->rps.max_delay = rp_state_cap & 0xff; |
Daniel Vetter | c6a828d | 2012-08-08 23:35:35 +0200 | [diff] [blame] | 3530 | dev_priv->rps.min_delay = (rp_state_cap & 0xff0000) >> 16; |
| 3531 | dev_priv->rps.cur_delay = 0; |
Chris Wilson | 7b9e0ae | 2012-04-28 08:56:39 +0100 | [diff] [blame] | 3532 | |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3533 | /* disable the counters and set deterministic thresholds */ |
| 3534 | I915_WRITE(GEN6_RC_CONTROL, 0); |
| 3535 | |
| 3536 | I915_WRITE(GEN6_RC1_WAKE_RATE_LIMIT, 1000 << 16); |
| 3537 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16 | 30); |
| 3538 | I915_WRITE(GEN6_RC6pp_WAKE_RATE_LIMIT, 30); |
| 3539 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); |
| 3540 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); |
| 3541 | |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 3542 | for_each_ring(ring, dev_priv, i) |
| 3543 | I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3544 | |
| 3545 | I915_WRITE(GEN6_RC_SLEEP, 0); |
| 3546 | I915_WRITE(GEN6_RC1e_THRESHOLD, 1000); |
Stéphane Marchesin | 351aa56 | 2013-08-13 11:55:17 -0700 | [diff] [blame] | 3547 | if (INTEL_INFO(dev)->gen <= 6 || IS_IVYBRIDGE(dev)) |
| 3548 | I915_WRITE(GEN6_RC6_THRESHOLD, 125000); |
| 3549 | else |
| 3550 | I915_WRITE(GEN6_RC6_THRESHOLD, 50000); |
Stéphane Marchesin | 0920a48 | 2013-01-29 19:41:59 -0800 | [diff] [blame] | 3551 | I915_WRITE(GEN6_RC6p_THRESHOLD, 150000); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3552 | I915_WRITE(GEN6_RC6pp_THRESHOLD, 64000); /* unused */ |
| 3553 | |
Eugeni Dodonov | 5a7dc92 | 2012-07-02 11:51:05 -0300 | [diff] [blame] | 3554 | /* Check if we are enabling RC6 */ |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3555 | rc6_mode = intel_enable_rc6(dev_priv->dev); |
| 3556 | if (rc6_mode & INTEL_RC6_ENABLE) |
| 3557 | rc6_mask |= GEN6_RC_CTL_RC6_ENABLE; |
| 3558 | |
Eugeni Dodonov | 5a7dc92 | 2012-07-02 11:51:05 -0300 | [diff] [blame] | 3559 | /* We don't use those on Haswell */ |
| 3560 | if (!IS_HASWELL(dev)) { |
| 3561 | if (rc6_mode & INTEL_RC6p_ENABLE) |
| 3562 | rc6_mask |= GEN6_RC_CTL_RC6p_ENABLE; |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3563 | |
Eugeni Dodonov | 5a7dc92 | 2012-07-02 11:51:05 -0300 | [diff] [blame] | 3564 | if (rc6_mode & INTEL_RC6pp_ENABLE) |
| 3565 | rc6_mask |= GEN6_RC_CTL_RC6pp_ENABLE; |
| 3566 | } |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3567 | |
| 3568 | DRM_INFO("Enabling RC6 states: RC6 %s, RC6p %s, RC6pp %s\n", |
Eugeni Dodonov | 5a7dc92 | 2012-07-02 11:51:05 -0300 | [diff] [blame] | 3569 | (rc6_mask & GEN6_RC_CTL_RC6_ENABLE) ? "on" : "off", |
| 3570 | (rc6_mask & GEN6_RC_CTL_RC6p_ENABLE) ? "on" : "off", |
| 3571 | (rc6_mask & GEN6_RC_CTL_RC6pp_ENABLE) ? "on" : "off"); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3572 | |
| 3573 | I915_WRITE(GEN6_RC_CONTROL, |
| 3574 | rc6_mask | |
| 3575 | GEN6_RC_CTL_EI_MODE(1) | |
| 3576 | GEN6_RC_CTL_HW_ENABLE); |
| 3577 | |
Rodrigo Vivi | 92bd1bf | 2013-03-25 17:55:49 -0300 | [diff] [blame] | 3578 | if (IS_HASWELL(dev)) { |
| 3579 | I915_WRITE(GEN6_RPNSWREQ, |
| 3580 | HSW_FREQUENCY(10)); |
| 3581 | I915_WRITE(GEN6_RC_VIDEO_FREQ, |
| 3582 | HSW_FREQUENCY(12)); |
| 3583 | } else { |
| 3584 | I915_WRITE(GEN6_RPNSWREQ, |
| 3585 | GEN6_FREQUENCY(10) | |
| 3586 | GEN6_OFFSET(0) | |
| 3587 | GEN6_AGGRESSIVE_TURBO); |
| 3588 | I915_WRITE(GEN6_RC_VIDEO_FREQ, |
| 3589 | GEN6_FREQUENCY(12)); |
| 3590 | } |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3591 | |
| 3592 | I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 1000000); |
| 3593 | I915_WRITE(GEN6_RP_INTERRUPT_LIMITS, |
Daniel Vetter | c6a828d | 2012-08-08 23:35:35 +0200 | [diff] [blame] | 3594 | dev_priv->rps.max_delay << 24 | |
| 3595 | dev_priv->rps.min_delay << 16); |
Eugeni Dodonov | 5a7dc92 | 2012-07-02 11:51:05 -0300 | [diff] [blame] | 3596 | |
Daniel Vetter | 1ee9ae3 | 2012-08-15 10:41:45 +0200 | [diff] [blame] | 3597 | I915_WRITE(GEN6_RP_UP_THRESHOLD, 59400); |
| 3598 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 245000); |
| 3599 | I915_WRITE(GEN6_RP_UP_EI, 66000); |
| 3600 | I915_WRITE(GEN6_RP_DOWN_EI, 350000); |
Eugeni Dodonov | 5a7dc92 | 2012-07-02 11:51:05 -0300 | [diff] [blame] | 3601 | |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3602 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); |
| 3603 | I915_WRITE(GEN6_RP_CONTROL, |
| 3604 | GEN6_RP_MEDIA_TURBO | |
Jesse Barnes | 89ba829 | 2012-05-22 09:30:33 -0700 | [diff] [blame] | 3605 | GEN6_RP_MEDIA_HW_NORMAL_MODE | |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3606 | GEN6_RP_MEDIA_IS_GFX | |
| 3607 | GEN6_RP_ENABLE | |
| 3608 | GEN6_RP_UP_BUSY_AVG | |
Eugeni Dodonov | 5a7dc92 | 2012-07-02 11:51:05 -0300 | [diff] [blame] | 3609 | (IS_HASWELL(dev) ? GEN7_RP_DOWN_IDLE_AVG : GEN6_RP_DOWN_IDLE_CONT)); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3610 | |
Ben Widawsky | 42c0526 | 2012-09-26 10:34:00 -0700 | [diff] [blame] | 3611 | ret = sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_MIN_FREQ_TABLE, 0); |
Ben Widawsky | 988b36e | 2013-04-23 17:33:02 -0700 | [diff] [blame] | 3612 | if (!ret) { |
Ben Widawsky | 42c0526 | 2012-09-26 10:34:00 -0700 | [diff] [blame] | 3613 | pcu_mbox = 0; |
| 3614 | ret = sandybridge_pcode_read(dev_priv, GEN6_READ_OC_PARAMS, &pcu_mbox); |
Ben Widawsky | a2b3fc0 | 2013-03-19 20:19:56 -0700 | [diff] [blame] | 3615 | if (!ret && (pcu_mbox & (1<<31))) { /* OC supported */ |
Ben Widawsky | 10e0849 | 2013-04-05 14:29:23 -0700 | [diff] [blame] | 3616 | DRM_DEBUG_DRIVER("Overclocking supported. Max: %dMHz, Overclock max: %dMHz\n", |
Ben Widawsky | a2b3fc0 | 2013-03-19 20:19:56 -0700 | [diff] [blame] | 3617 | (dev_priv->rps.max_delay & 0xff) * 50, |
| 3618 | (pcu_mbox & 0xff) * 50); |
Ben Widawsky | 31c7738 | 2013-04-05 14:29:22 -0700 | [diff] [blame] | 3619 | dev_priv->rps.hw_max = pcu_mbox & 0xff; |
Ben Widawsky | 42c0526 | 2012-09-26 10:34:00 -0700 | [diff] [blame] | 3620 | } |
| 3621 | } else { |
| 3622 | DRM_DEBUG_DRIVER("Failed to set the min frequency\n"); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3623 | } |
| 3624 | |
Chris Wilson | 7b9e0ae | 2012-04-28 08:56:39 +0100 | [diff] [blame] | 3625 | gen6_set_rps(dev_priv->dev, (gt_perf_status & 0xff00) >> 8); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3626 | |
Daniel Vetter | 44fc7d5 | 2013-07-12 22:43:27 +0200 | [diff] [blame] | 3627 | gen6_enable_rps_interrupts(dev); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3628 | |
Ben Widawsky | 31643d5 | 2012-09-26 10:34:01 -0700 | [diff] [blame] | 3629 | rc6vids = 0; |
| 3630 | ret = sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS, &rc6vids); |
| 3631 | if (IS_GEN6(dev) && ret) { |
| 3632 | DRM_DEBUG_DRIVER("Couldn't check for BIOS workaround\n"); |
| 3633 | } else if (IS_GEN6(dev) && (GEN6_DECODE_RC6_VID(rc6vids & 0xff) < 450)) { |
| 3634 | DRM_DEBUG_DRIVER("You should update your BIOS. Correcting minimum rc6 voltage (%dmV->%dmV)\n", |
| 3635 | GEN6_DECODE_RC6_VID(rc6vids & 0xff), 450); |
| 3636 | rc6vids &= 0xffff00; |
| 3637 | rc6vids |= GEN6_ENCODE_RC6_VID(450); |
| 3638 | ret = sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_RC6VIDS, rc6vids); |
| 3639 | if (ret) |
| 3640 | DRM_ERROR("Couldn't fix incorrect rc6 voltage\n"); |
| 3641 | } |
| 3642 | |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3643 | gen6_gt_force_wake_put(dev_priv); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3644 | } |
| 3645 | |
Paulo Zanoni | c67a470 | 2013-08-19 13:18:09 -0300 | [diff] [blame] | 3646 | void gen6_update_ring_freq(struct drm_device *dev) |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3647 | { |
Daniel Vetter | 79f5b2c | 2012-06-24 16:42:33 +0200 | [diff] [blame] | 3648 | struct drm_i915_private *dev_priv = dev->dev_private; |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3649 | int min_freq = 15; |
Chris Wilson | 3ebecd0 | 2013-04-12 19:10:13 +0100 | [diff] [blame] | 3650 | unsigned int gpu_freq; |
| 3651 | unsigned int max_ia_freq, min_ring_freq; |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3652 | int scaling_factor = 180; |
| 3653 | |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame] | 3654 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
Daniel Vetter | 79f5b2c | 2012-06-24 16:42:33 +0200 | [diff] [blame] | 3655 | |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3656 | max_ia_freq = cpufreq_quick_get_max(0); |
| 3657 | /* |
| 3658 | * Default to measured freq if none found, PCU will ensure we don't go |
| 3659 | * over |
| 3660 | */ |
| 3661 | if (!max_ia_freq) |
| 3662 | max_ia_freq = tsc_khz; |
| 3663 | |
| 3664 | /* Convert from kHz to MHz */ |
| 3665 | max_ia_freq /= 1000; |
| 3666 | |
Chris Wilson | 3ebecd0 | 2013-04-12 19:10:13 +0100 | [diff] [blame] | 3667 | min_ring_freq = I915_READ(MCHBAR_MIRROR_BASE_SNB + DCLK); |
| 3668 | /* convert DDR frequency from units of 133.3MHz to bandwidth */ |
| 3669 | min_ring_freq = (2 * 4 * min_ring_freq + 2) / 3; |
| 3670 | |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3671 | /* |
| 3672 | * For each potential GPU frequency, load a ring frequency we'd like |
| 3673 | * to use for memory access. We do this by specifying the IA frequency |
| 3674 | * the PCU should use as a reference to determine the ring frequency. |
| 3675 | */ |
Daniel Vetter | c6a828d | 2012-08-08 23:35:35 +0200 | [diff] [blame] | 3676 | for (gpu_freq = dev_priv->rps.max_delay; gpu_freq >= dev_priv->rps.min_delay; |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3677 | gpu_freq--) { |
Daniel Vetter | c6a828d | 2012-08-08 23:35:35 +0200 | [diff] [blame] | 3678 | int diff = dev_priv->rps.max_delay - gpu_freq; |
Chris Wilson | 3ebecd0 | 2013-04-12 19:10:13 +0100 | [diff] [blame] | 3679 | unsigned int ia_freq = 0, ring_freq = 0; |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3680 | |
Chris Wilson | 3ebecd0 | 2013-04-12 19:10:13 +0100 | [diff] [blame] | 3681 | if (IS_HASWELL(dev)) { |
| 3682 | ring_freq = (gpu_freq * 5 + 3) / 4; |
| 3683 | ring_freq = max(min_ring_freq, ring_freq); |
| 3684 | /* leave ia_freq as the default, chosen by cpufreq */ |
| 3685 | } else { |
| 3686 | /* On older processors, there is no separate ring |
| 3687 | * clock domain, so in order to boost the bandwidth |
| 3688 | * of the ring, we need to upclock the CPU (ia_freq). |
| 3689 | * |
| 3690 | * For GPU frequencies less than 750MHz, |
| 3691 | * just use the lowest ring freq. |
| 3692 | */ |
| 3693 | if (gpu_freq < min_freq) |
| 3694 | ia_freq = 800; |
| 3695 | else |
| 3696 | ia_freq = max_ia_freq - ((diff * scaling_factor) / 2); |
| 3697 | ia_freq = DIV_ROUND_CLOSEST(ia_freq, 100); |
| 3698 | } |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3699 | |
Ben Widawsky | 42c0526 | 2012-09-26 10:34:00 -0700 | [diff] [blame] | 3700 | sandybridge_pcode_write(dev_priv, |
| 3701 | GEN6_PCODE_WRITE_MIN_FREQ_TABLE, |
Chris Wilson | 3ebecd0 | 2013-04-12 19:10:13 +0100 | [diff] [blame] | 3702 | ia_freq << GEN6_PCODE_FREQ_IA_RATIO_SHIFT | |
| 3703 | ring_freq << GEN6_PCODE_FREQ_RING_RATIO_SHIFT | |
| 3704 | gpu_freq); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3705 | } |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3706 | } |
| 3707 | |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 3708 | int valleyview_rps_max_freq(struct drm_i915_private *dev_priv) |
| 3709 | { |
| 3710 | u32 val, rp0; |
| 3711 | |
Jani Nikula | 6493625 | 2013-05-22 15:36:20 +0300 | [diff] [blame] | 3712 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FREQ_FUSE); |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 3713 | |
| 3714 | rp0 = (val & FB_GFX_MAX_FREQ_FUSE_MASK) >> FB_GFX_MAX_FREQ_FUSE_SHIFT; |
| 3715 | /* Clamp to max */ |
| 3716 | rp0 = min_t(u32, rp0, 0xea); |
| 3717 | |
| 3718 | return rp0; |
| 3719 | } |
| 3720 | |
| 3721 | static int valleyview_rps_rpe_freq(struct drm_i915_private *dev_priv) |
| 3722 | { |
| 3723 | u32 val, rpe; |
| 3724 | |
Jani Nikula | 6493625 | 2013-05-22 15:36:20 +0300 | [diff] [blame] | 3725 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FMAX_FUSE_LO); |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 3726 | rpe = (val & FB_FMAX_VMIN_FREQ_LO_MASK) >> FB_FMAX_VMIN_FREQ_LO_SHIFT; |
Jani Nikula | 6493625 | 2013-05-22 15:36:20 +0300 | [diff] [blame] | 3727 | val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FMAX_FUSE_HI); |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 3728 | rpe |= (val & FB_FMAX_VMIN_FREQ_HI_MASK) << 5; |
| 3729 | |
| 3730 | return rpe; |
| 3731 | } |
| 3732 | |
| 3733 | int valleyview_rps_min_freq(struct drm_i915_private *dev_priv) |
| 3734 | { |
Jani Nikula | 6493625 | 2013-05-22 15:36:20 +0300 | [diff] [blame] | 3735 | return vlv_punit_read(dev_priv, PUNIT_REG_GPU_LFM) & 0xff; |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 3736 | } |
| 3737 | |
Jesse Barnes | 52ceb90 | 2013-04-23 10:09:26 -0700 | [diff] [blame] | 3738 | static void vlv_rps_timer_work(struct work_struct *work) |
| 3739 | { |
| 3740 | drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t, |
| 3741 | rps.vlv_work.work); |
| 3742 | |
| 3743 | /* |
| 3744 | * Timer fired, we must be idle. Drop to min voltage state. |
| 3745 | * Note: we use RPe here since it should match the |
| 3746 | * Vmin we were shooting for. That should give us better |
| 3747 | * perf when we come back out of RC6 than if we used the |
| 3748 | * min freq available. |
| 3749 | */ |
| 3750 | mutex_lock(&dev_priv->rps.hw_lock); |
Ville Syrjälä | 6dc5848 | 2013-06-25 21:38:10 +0300 | [diff] [blame] | 3751 | if (dev_priv->rps.cur_delay > dev_priv->rps.rpe_delay) |
| 3752 | valleyview_set_rps(dev_priv->dev, dev_priv->rps.rpe_delay); |
Jesse Barnes | 52ceb90 | 2013-04-23 10:09:26 -0700 | [diff] [blame] | 3753 | mutex_unlock(&dev_priv->rps.hw_lock); |
| 3754 | } |
| 3755 | |
Jesse Barnes | c9cddff | 2013-05-08 10:45:13 -0700 | [diff] [blame] | 3756 | static void valleyview_setup_pctx(struct drm_device *dev) |
| 3757 | { |
| 3758 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 3759 | struct drm_i915_gem_object *pctx; |
| 3760 | unsigned long pctx_paddr; |
| 3761 | u32 pcbr; |
| 3762 | int pctx_size = 24*1024; |
| 3763 | |
| 3764 | pcbr = I915_READ(VLV_PCBR); |
| 3765 | if (pcbr) { |
| 3766 | /* BIOS set it up already, grab the pre-alloc'd space */ |
| 3767 | int pcbr_offset; |
| 3768 | |
| 3769 | pcbr_offset = (pcbr & (~4095)) - dev_priv->mm.stolen_base; |
| 3770 | pctx = i915_gem_object_create_stolen_for_preallocated(dev_priv->dev, |
| 3771 | pcbr_offset, |
Daniel Vetter | 190d6cd | 2013-07-04 13:06:28 +0200 | [diff] [blame] | 3772 | I915_GTT_OFFSET_NONE, |
Jesse Barnes | c9cddff | 2013-05-08 10:45:13 -0700 | [diff] [blame] | 3773 | pctx_size); |
| 3774 | goto out; |
| 3775 | } |
| 3776 | |
| 3777 | /* |
| 3778 | * From the Gunit register HAS: |
| 3779 | * The Gfx driver is expected to program this register and ensure |
| 3780 | * proper allocation within Gfx stolen memory. For example, this |
| 3781 | * register should be programmed such than the PCBR range does not |
| 3782 | * overlap with other ranges, such as the frame buffer, protected |
| 3783 | * memory, or any other relevant ranges. |
| 3784 | */ |
| 3785 | pctx = i915_gem_object_create_stolen(dev, pctx_size); |
| 3786 | if (!pctx) { |
| 3787 | DRM_DEBUG("not enough stolen space for PCTX, disabling\n"); |
| 3788 | return; |
| 3789 | } |
| 3790 | |
| 3791 | pctx_paddr = dev_priv->mm.stolen_base + pctx->stolen->start; |
| 3792 | I915_WRITE(VLV_PCBR, pctx_paddr); |
| 3793 | |
| 3794 | out: |
| 3795 | dev_priv->vlv_pctx = pctx; |
| 3796 | } |
| 3797 | |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 3798 | static void valleyview_enable_rps(struct drm_device *dev) |
| 3799 | { |
| 3800 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 3801 | struct intel_ring_buffer *ring; |
Ville Syrjälä | 73008b9 | 2013-06-25 19:21:01 +0300 | [diff] [blame] | 3802 | u32 gtfifodbg, val; |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 3803 | int i; |
| 3804 | |
| 3805 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
| 3806 | |
| 3807 | if ((gtfifodbg = I915_READ(GTFIFODBG))) { |
| 3808 | DRM_ERROR("GT fifo had a previous error %x\n", gtfifodbg); |
| 3809 | I915_WRITE(GTFIFODBG, gtfifodbg); |
| 3810 | } |
| 3811 | |
Jesse Barnes | c9cddff | 2013-05-08 10:45:13 -0700 | [diff] [blame] | 3812 | valleyview_setup_pctx(dev); |
| 3813 | |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 3814 | gen6_gt_force_wake_get(dev_priv); |
| 3815 | |
| 3816 | I915_WRITE(GEN6_RP_UP_THRESHOLD, 59400); |
| 3817 | I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 245000); |
| 3818 | I915_WRITE(GEN6_RP_UP_EI, 66000); |
| 3819 | I915_WRITE(GEN6_RP_DOWN_EI, 350000); |
| 3820 | |
| 3821 | I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10); |
| 3822 | |
| 3823 | I915_WRITE(GEN6_RP_CONTROL, |
| 3824 | GEN6_RP_MEDIA_TURBO | |
| 3825 | GEN6_RP_MEDIA_HW_NORMAL_MODE | |
| 3826 | GEN6_RP_MEDIA_IS_GFX | |
| 3827 | GEN6_RP_ENABLE | |
| 3828 | GEN6_RP_UP_BUSY_AVG | |
| 3829 | GEN6_RP_DOWN_IDLE_CONT); |
| 3830 | |
| 3831 | I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 0x00280000); |
| 3832 | I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); |
| 3833 | I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); |
| 3834 | |
| 3835 | for_each_ring(ring, dev_priv, i) |
| 3836 | I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10); |
| 3837 | |
| 3838 | I915_WRITE(GEN6_RC6_THRESHOLD, 0xc350); |
| 3839 | |
| 3840 | /* allows RC6 residency counter to work */ |
| 3841 | I915_WRITE(0x138104, _MASKED_BIT_ENABLE(0x3)); |
| 3842 | I915_WRITE(GEN6_RC_CONTROL, |
| 3843 | GEN7_RC_CTL_TO_MODE); |
| 3844 | |
Jani Nikula | 6493625 | 2013-05-22 15:36:20 +0300 | [diff] [blame] | 3845 | val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS); |
Jesse Barnes | 2445966 | 2013-05-02 10:48:08 -0700 | [diff] [blame] | 3846 | switch ((val >> 6) & 3) { |
| 3847 | case 0: |
| 3848 | case 1: |
| 3849 | dev_priv->mem_freq = 800; |
| 3850 | break; |
| 3851 | case 2: |
| 3852 | dev_priv->mem_freq = 1066; |
| 3853 | break; |
| 3854 | case 3: |
| 3855 | dev_priv->mem_freq = 1333; |
| 3856 | break; |
| 3857 | } |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 3858 | DRM_DEBUG_DRIVER("DDR speed: %d MHz", dev_priv->mem_freq); |
| 3859 | |
| 3860 | DRM_DEBUG_DRIVER("GPLL enabled? %s\n", val & 0x10 ? "yes" : "no"); |
| 3861 | DRM_DEBUG_DRIVER("GPU status: 0x%08x\n", val); |
| 3862 | |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 3863 | dev_priv->rps.cur_delay = (val >> 8) & 0xff; |
Ville Syrjälä | 73008b9 | 2013-06-25 19:21:01 +0300 | [diff] [blame] | 3864 | DRM_DEBUG_DRIVER("current GPU freq: %d MHz (%u)\n", |
| 3865 | vlv_gpu_freq(dev_priv->mem_freq, |
| 3866 | dev_priv->rps.cur_delay), |
| 3867 | dev_priv->rps.cur_delay); |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 3868 | |
| 3869 | dev_priv->rps.max_delay = valleyview_rps_max_freq(dev_priv); |
| 3870 | dev_priv->rps.hw_max = dev_priv->rps.max_delay; |
Ville Syrjälä | 73008b9 | 2013-06-25 19:21:01 +0300 | [diff] [blame] | 3871 | DRM_DEBUG_DRIVER("max GPU freq: %d MHz (%u)\n", |
| 3872 | vlv_gpu_freq(dev_priv->mem_freq, |
| 3873 | dev_priv->rps.max_delay), |
| 3874 | dev_priv->rps.max_delay); |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 3875 | |
Ville Syrjälä | 73008b9 | 2013-06-25 19:21:01 +0300 | [diff] [blame] | 3876 | dev_priv->rps.rpe_delay = valleyview_rps_rpe_freq(dev_priv); |
| 3877 | DRM_DEBUG_DRIVER("RPe GPU freq: %d MHz (%u)\n", |
| 3878 | vlv_gpu_freq(dev_priv->mem_freq, |
| 3879 | dev_priv->rps.rpe_delay), |
| 3880 | dev_priv->rps.rpe_delay); |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 3881 | |
Ville Syrjälä | 73008b9 | 2013-06-25 19:21:01 +0300 | [diff] [blame] | 3882 | dev_priv->rps.min_delay = valleyview_rps_min_freq(dev_priv); |
| 3883 | DRM_DEBUG_DRIVER("min GPU freq: %d MHz (%u)\n", |
| 3884 | vlv_gpu_freq(dev_priv->mem_freq, |
| 3885 | dev_priv->rps.min_delay), |
| 3886 | dev_priv->rps.min_delay); |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 3887 | |
Ville Syrjälä | 73008b9 | 2013-06-25 19:21:01 +0300 | [diff] [blame] | 3888 | DRM_DEBUG_DRIVER("setting GPU freq to %d MHz (%u)\n", |
| 3889 | vlv_gpu_freq(dev_priv->mem_freq, |
| 3890 | dev_priv->rps.rpe_delay), |
| 3891 | dev_priv->rps.rpe_delay); |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 3892 | |
Jesse Barnes | 52ceb90 | 2013-04-23 10:09:26 -0700 | [diff] [blame] | 3893 | INIT_DELAYED_WORK(&dev_priv->rps.vlv_work, vlv_rps_timer_work); |
| 3894 | |
Ville Syrjälä | 73008b9 | 2013-06-25 19:21:01 +0300 | [diff] [blame] | 3895 | valleyview_set_rps(dev_priv->dev, dev_priv->rps.rpe_delay); |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 3896 | |
Daniel Vetter | 44fc7d5 | 2013-07-12 22:43:27 +0200 | [diff] [blame] | 3897 | gen6_enable_rps_interrupts(dev); |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 3898 | |
| 3899 | gen6_gt_force_wake_put(dev_priv); |
| 3900 | } |
| 3901 | |
Daniel Vetter | 930ebb4 | 2012-06-29 23:32:16 +0200 | [diff] [blame] | 3902 | void ironlake_teardown_rc6(struct drm_device *dev) |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3903 | { |
| 3904 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 3905 | |
Daniel Vetter | 3e37394 | 2012-11-02 19:55:04 +0100 | [diff] [blame] | 3906 | if (dev_priv->ips.renderctx) { |
| 3907 | i915_gem_object_unpin(dev_priv->ips.renderctx); |
| 3908 | drm_gem_object_unreference(&dev_priv->ips.renderctx->base); |
| 3909 | dev_priv->ips.renderctx = NULL; |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3910 | } |
| 3911 | |
Daniel Vetter | 3e37394 | 2012-11-02 19:55:04 +0100 | [diff] [blame] | 3912 | if (dev_priv->ips.pwrctx) { |
| 3913 | i915_gem_object_unpin(dev_priv->ips.pwrctx); |
| 3914 | drm_gem_object_unreference(&dev_priv->ips.pwrctx->base); |
| 3915 | dev_priv->ips.pwrctx = NULL; |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3916 | } |
| 3917 | } |
| 3918 | |
Daniel Vetter | 930ebb4 | 2012-06-29 23:32:16 +0200 | [diff] [blame] | 3919 | static void ironlake_disable_rc6(struct drm_device *dev) |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3920 | { |
| 3921 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 3922 | |
| 3923 | if (I915_READ(PWRCTXA)) { |
| 3924 | /* Wake the GPU, prevent RC6, then restore RSTDBYCTL */ |
| 3925 | I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) | RCX_SW_EXIT); |
| 3926 | wait_for(((I915_READ(RSTDBYCTL) & RSX_STATUS_MASK) == RSX_STATUS_ON), |
| 3927 | 50); |
| 3928 | |
| 3929 | I915_WRITE(PWRCTXA, 0); |
| 3930 | POSTING_READ(PWRCTXA); |
| 3931 | |
| 3932 | I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) & ~RCX_SW_EXIT); |
| 3933 | POSTING_READ(RSTDBYCTL); |
| 3934 | } |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3935 | } |
| 3936 | |
| 3937 | static int ironlake_setup_rc6(struct drm_device *dev) |
| 3938 | { |
| 3939 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 3940 | |
Daniel Vetter | 3e37394 | 2012-11-02 19:55:04 +0100 | [diff] [blame] | 3941 | if (dev_priv->ips.renderctx == NULL) |
| 3942 | dev_priv->ips.renderctx = intel_alloc_context_page(dev); |
| 3943 | if (!dev_priv->ips.renderctx) |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3944 | return -ENOMEM; |
| 3945 | |
Daniel Vetter | 3e37394 | 2012-11-02 19:55:04 +0100 | [diff] [blame] | 3946 | if (dev_priv->ips.pwrctx == NULL) |
| 3947 | dev_priv->ips.pwrctx = intel_alloc_context_page(dev); |
| 3948 | if (!dev_priv->ips.pwrctx) { |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3949 | ironlake_teardown_rc6(dev); |
| 3950 | return -ENOMEM; |
| 3951 | } |
| 3952 | |
| 3953 | return 0; |
| 3954 | } |
| 3955 | |
Daniel Vetter | 930ebb4 | 2012-06-29 23:32:16 +0200 | [diff] [blame] | 3956 | static void ironlake_enable_rc6(struct drm_device *dev) |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3957 | { |
| 3958 | struct drm_i915_private *dev_priv = dev->dev_private; |
Daniel Vetter | 6d90c95 | 2012-04-26 23:28:05 +0200 | [diff] [blame] | 3959 | struct intel_ring_buffer *ring = &dev_priv->ring[RCS]; |
Chris Wilson | 3e96050 | 2012-11-27 16:22:54 +0000 | [diff] [blame] | 3960 | bool was_interruptible; |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3961 | int ret; |
| 3962 | |
| 3963 | /* rc6 disabled by default due to repeated reports of hanging during |
| 3964 | * boot and resume. |
| 3965 | */ |
| 3966 | if (!intel_enable_rc6(dev)) |
| 3967 | return; |
| 3968 | |
Daniel Vetter | 79f5b2c | 2012-06-24 16:42:33 +0200 | [diff] [blame] | 3969 | WARN_ON(!mutex_is_locked(&dev->struct_mutex)); |
| 3970 | |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3971 | ret = ironlake_setup_rc6(dev); |
Daniel Vetter | 79f5b2c | 2012-06-24 16:42:33 +0200 | [diff] [blame] | 3972 | if (ret) |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3973 | return; |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3974 | |
Chris Wilson | 3e96050 | 2012-11-27 16:22:54 +0000 | [diff] [blame] | 3975 | was_interruptible = dev_priv->mm.interruptible; |
| 3976 | dev_priv->mm.interruptible = false; |
| 3977 | |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3978 | /* |
| 3979 | * GPU can automatically power down the render unit if given a page |
| 3980 | * to save state. |
| 3981 | */ |
Daniel Vetter | 6d90c95 | 2012-04-26 23:28:05 +0200 | [diff] [blame] | 3982 | ret = intel_ring_begin(ring, 6); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3983 | if (ret) { |
| 3984 | ironlake_teardown_rc6(dev); |
Chris Wilson | 3e96050 | 2012-11-27 16:22:54 +0000 | [diff] [blame] | 3985 | dev_priv->mm.interruptible = was_interruptible; |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 3986 | return; |
| 3987 | } |
| 3988 | |
Daniel Vetter | 6d90c95 | 2012-04-26 23:28:05 +0200 | [diff] [blame] | 3989 | intel_ring_emit(ring, MI_SUSPEND_FLUSH | MI_SUSPEND_FLUSH_EN); |
| 3990 | intel_ring_emit(ring, MI_SET_CONTEXT); |
Ben Widawsky | f343c5f | 2013-07-05 14:41:04 -0700 | [diff] [blame] | 3991 | intel_ring_emit(ring, i915_gem_obj_ggtt_offset(dev_priv->ips.renderctx) | |
Daniel Vetter | 6d90c95 | 2012-04-26 23:28:05 +0200 | [diff] [blame] | 3992 | MI_MM_SPACE_GTT | |
| 3993 | MI_SAVE_EXT_STATE_EN | |
| 3994 | MI_RESTORE_EXT_STATE_EN | |
| 3995 | MI_RESTORE_INHIBIT); |
| 3996 | intel_ring_emit(ring, MI_SUSPEND_FLUSH); |
| 3997 | intel_ring_emit(ring, MI_NOOP); |
| 3998 | intel_ring_emit(ring, MI_FLUSH); |
| 3999 | intel_ring_advance(ring); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 4000 | |
| 4001 | /* |
| 4002 | * Wait for the command parser to advance past MI_SET_CONTEXT. The HW |
| 4003 | * does an implicit flush, combined with MI_FLUSH above, it should be |
| 4004 | * safe to assume that renderctx is valid |
| 4005 | */ |
Chris Wilson | 3e96050 | 2012-11-27 16:22:54 +0000 | [diff] [blame] | 4006 | ret = intel_ring_idle(ring); |
| 4007 | dev_priv->mm.interruptible = was_interruptible; |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 4008 | if (ret) { |
Jani Nikula | def27a5 | 2013-03-12 10:49:19 +0200 | [diff] [blame] | 4009 | DRM_ERROR("failed to enable ironlake power savings\n"); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 4010 | ironlake_teardown_rc6(dev); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 4011 | return; |
| 4012 | } |
| 4013 | |
Ben Widawsky | f343c5f | 2013-07-05 14:41:04 -0700 | [diff] [blame] | 4014 | I915_WRITE(PWRCTXA, i915_gem_obj_ggtt_offset(dev_priv->ips.pwrctx) | PWRCTX_EN); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 4015 | I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) & ~RCX_SW_EXIT); |
Eugeni Dodonov | 2b4e57b | 2012-04-18 15:29:23 -0300 | [diff] [blame] | 4016 | } |
| 4017 | |
Eugeni Dodonov | dde1888 | 2012-04-18 15:29:24 -0300 | [diff] [blame] | 4018 | static unsigned long intel_pxfreq(u32 vidfreq) |
| 4019 | { |
| 4020 | unsigned long freq; |
| 4021 | int div = (vidfreq & 0x3f0000) >> 16; |
| 4022 | int post = (vidfreq & 0x3000) >> 12; |
| 4023 | int pre = (vidfreq & 0x7); |
| 4024 | |
| 4025 | if (!pre) |
| 4026 | return 0; |
| 4027 | |
| 4028 | freq = ((div * 133333) / ((1<<post) * pre)); |
| 4029 | |
| 4030 | return freq; |
| 4031 | } |
| 4032 | |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4033 | static const struct cparams { |
| 4034 | u16 i; |
| 4035 | u16 t; |
| 4036 | u16 m; |
| 4037 | u16 c; |
| 4038 | } cparams[] = { |
| 4039 | { 1, 1333, 301, 28664 }, |
| 4040 | { 1, 1066, 294, 24460 }, |
| 4041 | { 1, 800, 294, 25192 }, |
| 4042 | { 0, 1333, 276, 27605 }, |
| 4043 | { 0, 1066, 276, 27605 }, |
| 4044 | { 0, 800, 231, 23784 }, |
| 4045 | }; |
| 4046 | |
Chris Wilson | f531dcb | 2012-09-25 10:16:12 +0100 | [diff] [blame] | 4047 | static unsigned long __i915_chipset_val(struct drm_i915_private *dev_priv) |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4048 | { |
| 4049 | u64 total_count, diff, ret; |
| 4050 | u32 count1, count2, count3, m = 0, c = 0; |
| 4051 | unsigned long now = jiffies_to_msecs(jiffies), diff1; |
| 4052 | int i; |
| 4053 | |
Daniel Vetter | 02d7195 | 2012-08-09 16:44:54 +0200 | [diff] [blame] | 4054 | assert_spin_locked(&mchdev_lock); |
| 4055 | |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 4056 | diff1 = now - dev_priv->ips.last_time1; |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4057 | |
| 4058 | /* Prevent division-by-zero if we are asking too fast. |
| 4059 | * Also, we don't get interesting results if we are polling |
| 4060 | * faster than once in 10ms, so just return the saved value |
| 4061 | * in such cases. |
| 4062 | */ |
| 4063 | if (diff1 <= 10) |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 4064 | return dev_priv->ips.chipset_power; |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4065 | |
| 4066 | count1 = I915_READ(DMIEC); |
| 4067 | count2 = I915_READ(DDREC); |
| 4068 | count3 = I915_READ(CSIEC); |
| 4069 | |
| 4070 | total_count = count1 + count2 + count3; |
| 4071 | |
| 4072 | /* FIXME: handle per-counter overflow */ |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 4073 | if (total_count < dev_priv->ips.last_count1) { |
| 4074 | diff = ~0UL - dev_priv->ips.last_count1; |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4075 | diff += total_count; |
| 4076 | } else { |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 4077 | diff = total_count - dev_priv->ips.last_count1; |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4078 | } |
| 4079 | |
| 4080 | for (i = 0; i < ARRAY_SIZE(cparams); i++) { |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 4081 | if (cparams[i].i == dev_priv->ips.c_m && |
| 4082 | cparams[i].t == dev_priv->ips.r_t) { |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4083 | m = cparams[i].m; |
| 4084 | c = cparams[i].c; |
| 4085 | break; |
| 4086 | } |
| 4087 | } |
| 4088 | |
| 4089 | diff = div_u64(diff, diff1); |
| 4090 | ret = ((m * diff) + c); |
| 4091 | ret = div_u64(ret, 10); |
| 4092 | |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 4093 | dev_priv->ips.last_count1 = total_count; |
| 4094 | dev_priv->ips.last_time1 = now; |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4095 | |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 4096 | dev_priv->ips.chipset_power = ret; |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4097 | |
| 4098 | return ret; |
| 4099 | } |
| 4100 | |
Chris Wilson | f531dcb | 2012-09-25 10:16:12 +0100 | [diff] [blame] | 4101 | unsigned long i915_chipset_val(struct drm_i915_private *dev_priv) |
| 4102 | { |
| 4103 | unsigned long val; |
| 4104 | |
| 4105 | if (dev_priv->info->gen != 5) |
| 4106 | return 0; |
| 4107 | |
| 4108 | spin_lock_irq(&mchdev_lock); |
| 4109 | |
| 4110 | val = __i915_chipset_val(dev_priv); |
| 4111 | |
| 4112 | spin_unlock_irq(&mchdev_lock); |
| 4113 | |
| 4114 | return val; |
| 4115 | } |
| 4116 | |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4117 | unsigned long i915_mch_val(struct drm_i915_private *dev_priv) |
| 4118 | { |
| 4119 | unsigned long m, x, b; |
| 4120 | u32 tsfs; |
| 4121 | |
| 4122 | tsfs = I915_READ(TSFS); |
| 4123 | |
| 4124 | m = ((tsfs & TSFS_SLOPE_MASK) >> TSFS_SLOPE_SHIFT); |
| 4125 | x = I915_READ8(TR1); |
| 4126 | |
| 4127 | b = tsfs & TSFS_INTR_MASK; |
| 4128 | |
| 4129 | return ((m * x) / 127) - b; |
| 4130 | } |
| 4131 | |
| 4132 | static u16 pvid_to_extvid(struct drm_i915_private *dev_priv, u8 pxvid) |
| 4133 | { |
| 4134 | static const struct v_table { |
| 4135 | u16 vd; /* in .1 mil */ |
| 4136 | u16 vm; /* in .1 mil */ |
| 4137 | } v_table[] = { |
| 4138 | { 0, 0, }, |
| 4139 | { 375, 0, }, |
| 4140 | { 500, 0, }, |
| 4141 | { 625, 0, }, |
| 4142 | { 750, 0, }, |
| 4143 | { 875, 0, }, |
| 4144 | { 1000, 0, }, |
| 4145 | { 1125, 0, }, |
| 4146 | { 4125, 3000, }, |
| 4147 | { 4125, 3000, }, |
| 4148 | { 4125, 3000, }, |
| 4149 | { 4125, 3000, }, |
| 4150 | { 4125, 3000, }, |
| 4151 | { 4125, 3000, }, |
| 4152 | { 4125, 3000, }, |
| 4153 | { 4125, 3000, }, |
| 4154 | { 4125, 3000, }, |
| 4155 | { 4125, 3000, }, |
| 4156 | { 4125, 3000, }, |
| 4157 | { 4125, 3000, }, |
| 4158 | { 4125, 3000, }, |
| 4159 | { 4125, 3000, }, |
| 4160 | { 4125, 3000, }, |
| 4161 | { 4125, 3000, }, |
| 4162 | { 4125, 3000, }, |
| 4163 | { 4125, 3000, }, |
| 4164 | { 4125, 3000, }, |
| 4165 | { 4125, 3000, }, |
| 4166 | { 4125, 3000, }, |
| 4167 | { 4125, 3000, }, |
| 4168 | { 4125, 3000, }, |
| 4169 | { 4125, 3000, }, |
| 4170 | { 4250, 3125, }, |
| 4171 | { 4375, 3250, }, |
| 4172 | { 4500, 3375, }, |
| 4173 | { 4625, 3500, }, |
| 4174 | { 4750, 3625, }, |
| 4175 | { 4875, 3750, }, |
| 4176 | { 5000, 3875, }, |
| 4177 | { 5125, 4000, }, |
| 4178 | { 5250, 4125, }, |
| 4179 | { 5375, 4250, }, |
| 4180 | { 5500, 4375, }, |
| 4181 | { 5625, 4500, }, |
| 4182 | { 5750, 4625, }, |
| 4183 | { 5875, 4750, }, |
| 4184 | { 6000, 4875, }, |
| 4185 | { 6125, 5000, }, |
| 4186 | { 6250, 5125, }, |
| 4187 | { 6375, 5250, }, |
| 4188 | { 6500, 5375, }, |
| 4189 | { 6625, 5500, }, |
| 4190 | { 6750, 5625, }, |
| 4191 | { 6875, 5750, }, |
| 4192 | { 7000, 5875, }, |
| 4193 | { 7125, 6000, }, |
| 4194 | { 7250, 6125, }, |
| 4195 | { 7375, 6250, }, |
| 4196 | { 7500, 6375, }, |
| 4197 | { 7625, 6500, }, |
| 4198 | { 7750, 6625, }, |
| 4199 | { 7875, 6750, }, |
| 4200 | { 8000, 6875, }, |
| 4201 | { 8125, 7000, }, |
| 4202 | { 8250, 7125, }, |
| 4203 | { 8375, 7250, }, |
| 4204 | { 8500, 7375, }, |
| 4205 | { 8625, 7500, }, |
| 4206 | { 8750, 7625, }, |
| 4207 | { 8875, 7750, }, |
| 4208 | { 9000, 7875, }, |
| 4209 | { 9125, 8000, }, |
| 4210 | { 9250, 8125, }, |
| 4211 | { 9375, 8250, }, |
| 4212 | { 9500, 8375, }, |
| 4213 | { 9625, 8500, }, |
| 4214 | { 9750, 8625, }, |
| 4215 | { 9875, 8750, }, |
| 4216 | { 10000, 8875, }, |
| 4217 | { 10125, 9000, }, |
| 4218 | { 10250, 9125, }, |
| 4219 | { 10375, 9250, }, |
| 4220 | { 10500, 9375, }, |
| 4221 | { 10625, 9500, }, |
| 4222 | { 10750, 9625, }, |
| 4223 | { 10875, 9750, }, |
| 4224 | { 11000, 9875, }, |
| 4225 | { 11125, 10000, }, |
| 4226 | { 11250, 10125, }, |
| 4227 | { 11375, 10250, }, |
| 4228 | { 11500, 10375, }, |
| 4229 | { 11625, 10500, }, |
| 4230 | { 11750, 10625, }, |
| 4231 | { 11875, 10750, }, |
| 4232 | { 12000, 10875, }, |
| 4233 | { 12125, 11000, }, |
| 4234 | { 12250, 11125, }, |
| 4235 | { 12375, 11250, }, |
| 4236 | { 12500, 11375, }, |
| 4237 | { 12625, 11500, }, |
| 4238 | { 12750, 11625, }, |
| 4239 | { 12875, 11750, }, |
| 4240 | { 13000, 11875, }, |
| 4241 | { 13125, 12000, }, |
| 4242 | { 13250, 12125, }, |
| 4243 | { 13375, 12250, }, |
| 4244 | { 13500, 12375, }, |
| 4245 | { 13625, 12500, }, |
| 4246 | { 13750, 12625, }, |
| 4247 | { 13875, 12750, }, |
| 4248 | { 14000, 12875, }, |
| 4249 | { 14125, 13000, }, |
| 4250 | { 14250, 13125, }, |
| 4251 | { 14375, 13250, }, |
| 4252 | { 14500, 13375, }, |
| 4253 | { 14625, 13500, }, |
| 4254 | { 14750, 13625, }, |
| 4255 | { 14875, 13750, }, |
| 4256 | { 15000, 13875, }, |
| 4257 | { 15125, 14000, }, |
| 4258 | { 15250, 14125, }, |
| 4259 | { 15375, 14250, }, |
| 4260 | { 15500, 14375, }, |
| 4261 | { 15625, 14500, }, |
| 4262 | { 15750, 14625, }, |
| 4263 | { 15875, 14750, }, |
| 4264 | { 16000, 14875, }, |
| 4265 | { 16125, 15000, }, |
| 4266 | }; |
| 4267 | if (dev_priv->info->is_mobile) |
| 4268 | return v_table[pxvid].vm; |
| 4269 | else |
| 4270 | return v_table[pxvid].vd; |
| 4271 | } |
| 4272 | |
Daniel Vetter | 02d7195 | 2012-08-09 16:44:54 +0200 | [diff] [blame] | 4273 | static void __i915_update_gfx_val(struct drm_i915_private *dev_priv) |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4274 | { |
| 4275 | struct timespec now, diff1; |
| 4276 | u64 diff; |
| 4277 | unsigned long diffms; |
| 4278 | u32 count; |
| 4279 | |
Daniel Vetter | 02d7195 | 2012-08-09 16:44:54 +0200 | [diff] [blame] | 4280 | assert_spin_locked(&mchdev_lock); |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4281 | |
| 4282 | getrawmonotonic(&now); |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 4283 | diff1 = timespec_sub(now, dev_priv->ips.last_time2); |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4284 | |
| 4285 | /* Don't divide by 0 */ |
| 4286 | diffms = diff1.tv_sec * 1000 + diff1.tv_nsec / 1000000; |
| 4287 | if (!diffms) |
| 4288 | return; |
| 4289 | |
| 4290 | count = I915_READ(GFXEC); |
| 4291 | |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 4292 | if (count < dev_priv->ips.last_count2) { |
| 4293 | diff = ~0UL - dev_priv->ips.last_count2; |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4294 | diff += count; |
| 4295 | } else { |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 4296 | diff = count - dev_priv->ips.last_count2; |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4297 | } |
| 4298 | |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 4299 | dev_priv->ips.last_count2 = count; |
| 4300 | dev_priv->ips.last_time2 = now; |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4301 | |
| 4302 | /* More magic constants... */ |
| 4303 | diff = diff * 1181; |
| 4304 | diff = div_u64(diff, diffms * 10); |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 4305 | dev_priv->ips.gfx_power = diff; |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4306 | } |
| 4307 | |
Daniel Vetter | 02d7195 | 2012-08-09 16:44:54 +0200 | [diff] [blame] | 4308 | void i915_update_gfx_val(struct drm_i915_private *dev_priv) |
| 4309 | { |
| 4310 | if (dev_priv->info->gen != 5) |
| 4311 | return; |
| 4312 | |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 4313 | spin_lock_irq(&mchdev_lock); |
Daniel Vetter | 02d7195 | 2012-08-09 16:44:54 +0200 | [diff] [blame] | 4314 | |
| 4315 | __i915_update_gfx_val(dev_priv); |
| 4316 | |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 4317 | spin_unlock_irq(&mchdev_lock); |
Daniel Vetter | 02d7195 | 2012-08-09 16:44:54 +0200 | [diff] [blame] | 4318 | } |
| 4319 | |
Chris Wilson | f531dcb | 2012-09-25 10:16:12 +0100 | [diff] [blame] | 4320 | static unsigned long __i915_gfx_val(struct drm_i915_private *dev_priv) |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4321 | { |
| 4322 | unsigned long t, corr, state1, corr2, state2; |
| 4323 | u32 pxvid, ext_v; |
| 4324 | |
Daniel Vetter | 02d7195 | 2012-08-09 16:44:54 +0200 | [diff] [blame] | 4325 | assert_spin_locked(&mchdev_lock); |
| 4326 | |
Daniel Vetter | c6a828d | 2012-08-08 23:35:35 +0200 | [diff] [blame] | 4327 | pxvid = I915_READ(PXVFREQ_BASE + (dev_priv->rps.cur_delay * 4)); |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4328 | pxvid = (pxvid >> 24) & 0x7f; |
| 4329 | ext_v = pvid_to_extvid(dev_priv, pxvid); |
| 4330 | |
| 4331 | state1 = ext_v; |
| 4332 | |
| 4333 | t = i915_mch_val(dev_priv); |
| 4334 | |
| 4335 | /* Revel in the empirically derived constants */ |
| 4336 | |
| 4337 | /* Correction factor in 1/100000 units */ |
| 4338 | if (t > 80) |
| 4339 | corr = ((t * 2349) + 135940); |
| 4340 | else if (t >= 50) |
| 4341 | corr = ((t * 964) + 29317); |
| 4342 | else /* < 50 */ |
| 4343 | corr = ((t * 301) + 1004); |
| 4344 | |
| 4345 | corr = corr * ((150142 * state1) / 10000 - 78642); |
| 4346 | corr /= 100000; |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 4347 | corr2 = (corr * dev_priv->ips.corr); |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4348 | |
| 4349 | state2 = (corr2 * state1) / 10000; |
| 4350 | state2 /= 100; /* convert to mW */ |
| 4351 | |
Daniel Vetter | 02d7195 | 2012-08-09 16:44:54 +0200 | [diff] [blame] | 4352 | __i915_update_gfx_val(dev_priv); |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4353 | |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 4354 | return dev_priv->ips.gfx_power + state2; |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4355 | } |
| 4356 | |
Chris Wilson | f531dcb | 2012-09-25 10:16:12 +0100 | [diff] [blame] | 4357 | unsigned long i915_gfx_val(struct drm_i915_private *dev_priv) |
| 4358 | { |
| 4359 | unsigned long val; |
| 4360 | |
| 4361 | if (dev_priv->info->gen != 5) |
| 4362 | return 0; |
| 4363 | |
| 4364 | spin_lock_irq(&mchdev_lock); |
| 4365 | |
| 4366 | val = __i915_gfx_val(dev_priv); |
| 4367 | |
| 4368 | spin_unlock_irq(&mchdev_lock); |
| 4369 | |
| 4370 | return val; |
| 4371 | } |
| 4372 | |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4373 | /** |
| 4374 | * i915_read_mch_val - return value for IPS use |
| 4375 | * |
| 4376 | * Calculate and return a value for the IPS driver to use when deciding whether |
| 4377 | * we have thermal and power headroom to increase CPU or GPU power budget. |
| 4378 | */ |
| 4379 | unsigned long i915_read_mch_val(void) |
| 4380 | { |
| 4381 | struct drm_i915_private *dev_priv; |
| 4382 | unsigned long chipset_val, graphics_val, ret = 0; |
| 4383 | |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 4384 | spin_lock_irq(&mchdev_lock); |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4385 | if (!i915_mch_dev) |
| 4386 | goto out_unlock; |
| 4387 | dev_priv = i915_mch_dev; |
| 4388 | |
Chris Wilson | f531dcb | 2012-09-25 10:16:12 +0100 | [diff] [blame] | 4389 | chipset_val = __i915_chipset_val(dev_priv); |
| 4390 | graphics_val = __i915_gfx_val(dev_priv); |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4391 | |
| 4392 | ret = chipset_val + graphics_val; |
| 4393 | |
| 4394 | out_unlock: |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 4395 | spin_unlock_irq(&mchdev_lock); |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4396 | |
| 4397 | return ret; |
| 4398 | } |
| 4399 | EXPORT_SYMBOL_GPL(i915_read_mch_val); |
| 4400 | |
| 4401 | /** |
| 4402 | * i915_gpu_raise - raise GPU frequency limit |
| 4403 | * |
| 4404 | * Raise the limit; IPS indicates we have thermal headroom. |
| 4405 | */ |
| 4406 | bool i915_gpu_raise(void) |
| 4407 | { |
| 4408 | struct drm_i915_private *dev_priv; |
| 4409 | bool ret = true; |
| 4410 | |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 4411 | spin_lock_irq(&mchdev_lock); |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4412 | if (!i915_mch_dev) { |
| 4413 | ret = false; |
| 4414 | goto out_unlock; |
| 4415 | } |
| 4416 | dev_priv = i915_mch_dev; |
| 4417 | |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 4418 | if (dev_priv->ips.max_delay > dev_priv->ips.fmax) |
| 4419 | dev_priv->ips.max_delay--; |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4420 | |
| 4421 | out_unlock: |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 4422 | spin_unlock_irq(&mchdev_lock); |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4423 | |
| 4424 | return ret; |
| 4425 | } |
| 4426 | EXPORT_SYMBOL_GPL(i915_gpu_raise); |
| 4427 | |
| 4428 | /** |
| 4429 | * i915_gpu_lower - lower GPU frequency limit |
| 4430 | * |
| 4431 | * IPS indicates we're close to a thermal limit, so throttle back the GPU |
| 4432 | * frequency maximum. |
| 4433 | */ |
| 4434 | bool i915_gpu_lower(void) |
| 4435 | { |
| 4436 | struct drm_i915_private *dev_priv; |
| 4437 | bool ret = true; |
| 4438 | |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 4439 | spin_lock_irq(&mchdev_lock); |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4440 | if (!i915_mch_dev) { |
| 4441 | ret = false; |
| 4442 | goto out_unlock; |
| 4443 | } |
| 4444 | dev_priv = i915_mch_dev; |
| 4445 | |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 4446 | if (dev_priv->ips.max_delay < dev_priv->ips.min_delay) |
| 4447 | dev_priv->ips.max_delay++; |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4448 | |
| 4449 | out_unlock: |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 4450 | spin_unlock_irq(&mchdev_lock); |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4451 | |
| 4452 | return ret; |
| 4453 | } |
| 4454 | EXPORT_SYMBOL_GPL(i915_gpu_lower); |
| 4455 | |
| 4456 | /** |
| 4457 | * i915_gpu_busy - indicate GPU business to IPS |
| 4458 | * |
| 4459 | * Tell the IPS driver whether or not the GPU is busy. |
| 4460 | */ |
| 4461 | bool i915_gpu_busy(void) |
| 4462 | { |
| 4463 | struct drm_i915_private *dev_priv; |
Chris Wilson | f047e39 | 2012-07-21 12:31:41 +0100 | [diff] [blame] | 4464 | struct intel_ring_buffer *ring; |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4465 | bool ret = false; |
Chris Wilson | f047e39 | 2012-07-21 12:31:41 +0100 | [diff] [blame] | 4466 | int i; |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4467 | |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 4468 | spin_lock_irq(&mchdev_lock); |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4469 | if (!i915_mch_dev) |
| 4470 | goto out_unlock; |
| 4471 | dev_priv = i915_mch_dev; |
| 4472 | |
Chris Wilson | f047e39 | 2012-07-21 12:31:41 +0100 | [diff] [blame] | 4473 | for_each_ring(ring, dev_priv, i) |
| 4474 | ret |= !list_empty(&ring->request_list); |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4475 | |
| 4476 | out_unlock: |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 4477 | spin_unlock_irq(&mchdev_lock); |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4478 | |
| 4479 | return ret; |
| 4480 | } |
| 4481 | EXPORT_SYMBOL_GPL(i915_gpu_busy); |
| 4482 | |
| 4483 | /** |
| 4484 | * i915_gpu_turbo_disable - disable graphics turbo |
| 4485 | * |
| 4486 | * Disable graphics turbo by resetting the max frequency and setting the |
| 4487 | * current frequency to the default. |
| 4488 | */ |
| 4489 | bool i915_gpu_turbo_disable(void) |
| 4490 | { |
| 4491 | struct drm_i915_private *dev_priv; |
| 4492 | bool ret = true; |
| 4493 | |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 4494 | spin_lock_irq(&mchdev_lock); |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4495 | if (!i915_mch_dev) { |
| 4496 | ret = false; |
| 4497 | goto out_unlock; |
| 4498 | } |
| 4499 | dev_priv = i915_mch_dev; |
| 4500 | |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 4501 | dev_priv->ips.max_delay = dev_priv->ips.fstart; |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4502 | |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 4503 | if (!ironlake_set_drps(dev_priv->dev, dev_priv->ips.fstart)) |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4504 | ret = false; |
| 4505 | |
| 4506 | out_unlock: |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 4507 | spin_unlock_irq(&mchdev_lock); |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4508 | |
| 4509 | return ret; |
| 4510 | } |
| 4511 | EXPORT_SYMBOL_GPL(i915_gpu_turbo_disable); |
| 4512 | |
| 4513 | /** |
| 4514 | * Tells the intel_ips driver that the i915 driver is now loaded, if |
| 4515 | * IPS got loaded first. |
| 4516 | * |
| 4517 | * This awkward dance is so that neither module has to depend on the |
| 4518 | * other in order for IPS to do the appropriate communication of |
| 4519 | * GPU turbo limits to i915. |
| 4520 | */ |
| 4521 | static void |
| 4522 | ips_ping_for_i915_load(void) |
| 4523 | { |
| 4524 | void (*link)(void); |
| 4525 | |
| 4526 | link = symbol_get(ips_link_to_i915_driver); |
| 4527 | if (link) { |
| 4528 | link(); |
| 4529 | symbol_put(ips_link_to_i915_driver); |
| 4530 | } |
| 4531 | } |
| 4532 | |
| 4533 | void intel_gpu_ips_init(struct drm_i915_private *dev_priv) |
| 4534 | { |
Daniel Vetter | 02d7195 | 2012-08-09 16:44:54 +0200 | [diff] [blame] | 4535 | /* We only register the i915 ips part with intel-ips once everything is |
| 4536 | * set up, to avoid intel-ips sneaking in and reading bogus values. */ |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 4537 | spin_lock_irq(&mchdev_lock); |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4538 | i915_mch_dev = dev_priv; |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 4539 | spin_unlock_irq(&mchdev_lock); |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4540 | |
| 4541 | ips_ping_for_i915_load(); |
| 4542 | } |
| 4543 | |
| 4544 | void intel_gpu_ips_teardown(void) |
| 4545 | { |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 4546 | spin_lock_irq(&mchdev_lock); |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4547 | i915_mch_dev = NULL; |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 4548 | spin_unlock_irq(&mchdev_lock); |
Daniel Vetter | eb48eb0 | 2012-04-26 23:28:12 +0200 | [diff] [blame] | 4549 | } |
Daniel Vetter | 8090c6b | 2012-06-24 16:42:32 +0200 | [diff] [blame] | 4550 | static void intel_init_emon(struct drm_device *dev) |
Eugeni Dodonov | dde1888 | 2012-04-18 15:29:24 -0300 | [diff] [blame] | 4551 | { |
| 4552 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 4553 | u32 lcfuse; |
| 4554 | u8 pxw[16]; |
| 4555 | int i; |
| 4556 | |
| 4557 | /* Disable to program */ |
| 4558 | I915_WRITE(ECR, 0); |
| 4559 | POSTING_READ(ECR); |
| 4560 | |
| 4561 | /* Program energy weights for various events */ |
| 4562 | I915_WRITE(SDEW, 0x15040d00); |
| 4563 | I915_WRITE(CSIEW0, 0x007f0000); |
| 4564 | I915_WRITE(CSIEW1, 0x1e220004); |
| 4565 | I915_WRITE(CSIEW2, 0x04000004); |
| 4566 | |
| 4567 | for (i = 0; i < 5; i++) |
| 4568 | I915_WRITE(PEW + (i * 4), 0); |
| 4569 | for (i = 0; i < 3; i++) |
| 4570 | I915_WRITE(DEW + (i * 4), 0); |
| 4571 | |
| 4572 | /* Program P-state weights to account for frequency power adjustment */ |
| 4573 | for (i = 0; i < 16; i++) { |
| 4574 | u32 pxvidfreq = I915_READ(PXVFREQ_BASE + (i * 4)); |
| 4575 | unsigned long freq = intel_pxfreq(pxvidfreq); |
| 4576 | unsigned long vid = (pxvidfreq & PXVFREQ_PX_MASK) >> |
| 4577 | PXVFREQ_PX_SHIFT; |
| 4578 | unsigned long val; |
| 4579 | |
| 4580 | val = vid * vid; |
| 4581 | val *= (freq / 1000); |
| 4582 | val *= 255; |
| 4583 | val /= (127*127*900); |
| 4584 | if (val > 0xff) |
| 4585 | DRM_ERROR("bad pxval: %ld\n", val); |
| 4586 | pxw[i] = val; |
| 4587 | } |
| 4588 | /* Render standby states get 0 weight */ |
| 4589 | pxw[14] = 0; |
| 4590 | pxw[15] = 0; |
| 4591 | |
| 4592 | for (i = 0; i < 4; i++) { |
| 4593 | u32 val = (pxw[i*4] << 24) | (pxw[(i*4)+1] << 16) | |
| 4594 | (pxw[(i*4)+2] << 8) | (pxw[(i*4)+3]); |
| 4595 | I915_WRITE(PXW + (i * 4), val); |
| 4596 | } |
| 4597 | |
| 4598 | /* Adjust magic regs to magic values (more experimental results) */ |
| 4599 | I915_WRITE(OGW0, 0); |
| 4600 | I915_WRITE(OGW1, 0); |
| 4601 | I915_WRITE(EG0, 0x00007f00); |
| 4602 | I915_WRITE(EG1, 0x0000000e); |
| 4603 | I915_WRITE(EG2, 0x000e0000); |
| 4604 | I915_WRITE(EG3, 0x68000300); |
| 4605 | I915_WRITE(EG4, 0x42000000); |
| 4606 | I915_WRITE(EG5, 0x00140031); |
| 4607 | I915_WRITE(EG6, 0); |
| 4608 | I915_WRITE(EG7, 0); |
| 4609 | |
| 4610 | for (i = 0; i < 8; i++) |
| 4611 | I915_WRITE(PXWL + (i * 4), 0); |
| 4612 | |
| 4613 | /* Enable PMON + select events */ |
| 4614 | I915_WRITE(ECR, 0x80000019); |
| 4615 | |
| 4616 | lcfuse = I915_READ(LCFUSE02); |
| 4617 | |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 4618 | dev_priv->ips.corr = (lcfuse & LCFUSE_HIV_MASK); |
Eugeni Dodonov | dde1888 | 2012-04-18 15:29:24 -0300 | [diff] [blame] | 4619 | } |
| 4620 | |
Daniel Vetter | 8090c6b | 2012-06-24 16:42:32 +0200 | [diff] [blame] | 4621 | void intel_disable_gt_powersave(struct drm_device *dev) |
| 4622 | { |
Jesse Barnes | 1a01ab3 | 2012-11-02 11:14:00 -0700 | [diff] [blame] | 4623 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 4624 | |
Daniel Vetter | fd0c064 | 2013-04-24 11:13:35 +0200 | [diff] [blame] | 4625 | /* Interrupts should be disabled already to avoid re-arming. */ |
| 4626 | WARN_ON(dev->irq_enabled); |
| 4627 | |
Daniel Vetter | 930ebb4 | 2012-06-29 23:32:16 +0200 | [diff] [blame] | 4628 | if (IS_IRONLAKE_M(dev)) { |
Daniel Vetter | 8090c6b | 2012-06-24 16:42:32 +0200 | [diff] [blame] | 4629 | ironlake_disable_drps(dev); |
Daniel Vetter | 930ebb4 | 2012-06-29 23:32:16 +0200 | [diff] [blame] | 4630 | ironlake_disable_rc6(dev); |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 4631 | } else if (INTEL_INFO(dev)->gen >= 6) { |
Jesse Barnes | 1a01ab3 | 2012-11-02 11:14:00 -0700 | [diff] [blame] | 4632 | cancel_delayed_work_sync(&dev_priv->rps.delayed_resume_work); |
Jesse Barnes | 250848c | 2013-04-23 10:09:27 -0700 | [diff] [blame] | 4633 | cancel_work_sync(&dev_priv->rps.work); |
Jesse Barnes | 52ceb90 | 2013-04-23 10:09:26 -0700 | [diff] [blame] | 4634 | if (IS_VALLEYVIEW(dev)) |
| 4635 | cancel_delayed_work_sync(&dev_priv->rps.vlv_work); |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame] | 4636 | mutex_lock(&dev_priv->rps.hw_lock); |
Jesse Barnes | d20d4f0 | 2013-04-23 10:09:28 -0700 | [diff] [blame] | 4637 | if (IS_VALLEYVIEW(dev)) |
| 4638 | valleyview_disable_rps(dev); |
| 4639 | else |
| 4640 | gen6_disable_rps(dev); |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame] | 4641 | mutex_unlock(&dev_priv->rps.hw_lock); |
Daniel Vetter | 930ebb4 | 2012-06-29 23:32:16 +0200 | [diff] [blame] | 4642 | } |
Daniel Vetter | 8090c6b | 2012-06-24 16:42:32 +0200 | [diff] [blame] | 4643 | } |
| 4644 | |
Jesse Barnes | 1a01ab3 | 2012-11-02 11:14:00 -0700 | [diff] [blame] | 4645 | static void intel_gen6_powersave_work(struct work_struct *work) |
| 4646 | { |
| 4647 | struct drm_i915_private *dev_priv = |
| 4648 | container_of(work, struct drm_i915_private, |
| 4649 | rps.delayed_resume_work.work); |
| 4650 | struct drm_device *dev = dev_priv->dev; |
| 4651 | |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame] | 4652 | mutex_lock(&dev_priv->rps.hw_lock); |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 4653 | |
| 4654 | if (IS_VALLEYVIEW(dev)) { |
| 4655 | valleyview_enable_rps(dev); |
| 4656 | } else { |
| 4657 | gen6_enable_rps(dev); |
| 4658 | gen6_update_ring_freq(dev); |
| 4659 | } |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame] | 4660 | mutex_unlock(&dev_priv->rps.hw_lock); |
Jesse Barnes | 1a01ab3 | 2012-11-02 11:14:00 -0700 | [diff] [blame] | 4661 | } |
| 4662 | |
Daniel Vetter | 8090c6b | 2012-06-24 16:42:32 +0200 | [diff] [blame] | 4663 | void intel_enable_gt_powersave(struct drm_device *dev) |
| 4664 | { |
Jesse Barnes | 1a01ab3 | 2012-11-02 11:14:00 -0700 | [diff] [blame] | 4665 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 4666 | |
Daniel Vetter | 8090c6b | 2012-06-24 16:42:32 +0200 | [diff] [blame] | 4667 | if (IS_IRONLAKE_M(dev)) { |
| 4668 | ironlake_enable_drps(dev); |
| 4669 | ironlake_enable_rc6(dev); |
| 4670 | intel_init_emon(dev); |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 4671 | } else if (IS_GEN6(dev) || IS_GEN7(dev)) { |
Jesse Barnes | 1a01ab3 | 2012-11-02 11:14:00 -0700 | [diff] [blame] | 4672 | /* |
| 4673 | * PCU communication is slow and this doesn't need to be |
| 4674 | * done at any specific time, so do this out of our fast path |
| 4675 | * to make resume and init faster. |
| 4676 | */ |
| 4677 | schedule_delayed_work(&dev_priv->rps.delayed_resume_work, |
| 4678 | round_jiffies_up_relative(HZ)); |
Daniel Vetter | 8090c6b | 2012-06-24 16:42:32 +0200 | [diff] [blame] | 4679 | } |
| 4680 | } |
| 4681 | |
Daniel Vetter | 3107bd4 | 2012-10-31 22:52:31 +0100 | [diff] [blame] | 4682 | static void ibx_init_clock_gating(struct drm_device *dev) |
| 4683 | { |
| 4684 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 4685 | |
| 4686 | /* |
| 4687 | * On Ibex Peak and Cougar Point, we need to disable clock |
| 4688 | * gating for the panel power sequencer or it will fail to |
| 4689 | * start up when no ports are active. |
| 4690 | */ |
| 4691 | I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE); |
| 4692 | } |
| 4693 | |
Ville Syrjälä | 0e088b8 | 2013-06-07 10:47:04 +0300 | [diff] [blame] | 4694 | static void g4x_disable_trickle_feed(struct drm_device *dev) |
| 4695 | { |
| 4696 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 4697 | int pipe; |
| 4698 | |
| 4699 | for_each_pipe(pipe) { |
| 4700 | I915_WRITE(DSPCNTR(pipe), |
| 4701 | I915_READ(DSPCNTR(pipe)) | |
| 4702 | DISPPLANE_TRICKLE_FEED_DISABLE); |
| 4703 | intel_flush_display_plane(dev_priv, pipe); |
| 4704 | } |
| 4705 | } |
| 4706 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 4707 | static void ironlake_init_clock_gating(struct drm_device *dev) |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 4708 | { |
| 4709 | struct drm_i915_private *dev_priv = dev->dev_private; |
Damien Lespiau | 231e54f | 2012-10-19 17:55:41 +0100 | [diff] [blame] | 4710 | uint32_t dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE; |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 4711 | |
Damien Lespiau | f1e8fa5 | 2013-06-07 17:41:09 +0100 | [diff] [blame] | 4712 | /* |
| 4713 | * Required for FBC |
| 4714 | * WaFbcDisableDpfcClockGating:ilk |
| 4715 | */ |
Damien Lespiau | 4d47e4f | 2012-10-19 17:55:42 +0100 | [diff] [blame] | 4716 | dspclk_gate |= ILK_DPFCRUNIT_CLOCK_GATE_DISABLE | |
| 4717 | ILK_DPFCUNIT_CLOCK_GATE_DISABLE | |
| 4718 | ILK_DPFDUNIT_CLOCK_GATE_ENABLE; |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 4719 | |
| 4720 | I915_WRITE(PCH_3DCGDIS0, |
| 4721 | MARIUNIT_CLOCK_GATE_DISABLE | |
| 4722 | SVSMUNIT_CLOCK_GATE_DISABLE); |
| 4723 | I915_WRITE(PCH_3DCGDIS1, |
| 4724 | VFMUNIT_CLOCK_GATE_DISABLE); |
| 4725 | |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 4726 | /* |
| 4727 | * According to the spec the following bits should be set in |
| 4728 | * order to enable memory self-refresh |
| 4729 | * The bit 22/21 of 0x42004 |
| 4730 | * The bit 5 of 0x42020 |
| 4731 | * The bit 15 of 0x45000 |
| 4732 | */ |
| 4733 | I915_WRITE(ILK_DISPLAY_CHICKEN2, |
| 4734 | (I915_READ(ILK_DISPLAY_CHICKEN2) | |
| 4735 | ILK_DPARB_GATE | ILK_VSDPFD_FULL)); |
Damien Lespiau | 4d47e4f | 2012-10-19 17:55:42 +0100 | [diff] [blame] | 4736 | dspclk_gate |= ILK_DPARBUNIT_CLOCK_GATE_ENABLE; |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 4737 | I915_WRITE(DISP_ARB_CTL, |
| 4738 | (I915_READ(DISP_ARB_CTL) | |
| 4739 | DISP_FBC_WM_DIS)); |
| 4740 | I915_WRITE(WM3_LP_ILK, 0); |
| 4741 | I915_WRITE(WM2_LP_ILK, 0); |
| 4742 | I915_WRITE(WM1_LP_ILK, 0); |
| 4743 | |
| 4744 | /* |
| 4745 | * Based on the document from hardware guys the following bits |
| 4746 | * should be set unconditionally in order to enable FBC. |
| 4747 | * The bit 22 of 0x42000 |
| 4748 | * The bit 22 of 0x42004 |
| 4749 | * The bit 7,8,9 of 0x42020. |
| 4750 | */ |
| 4751 | if (IS_IRONLAKE_M(dev)) { |
Damien Lespiau | 4bb3533 | 2013-06-14 15:23:24 +0100 | [diff] [blame] | 4752 | /* WaFbcAsynchFlipDisableFbcQueue:ilk */ |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 4753 | I915_WRITE(ILK_DISPLAY_CHICKEN1, |
| 4754 | I915_READ(ILK_DISPLAY_CHICKEN1) | |
| 4755 | ILK_FBCQ_DIS); |
| 4756 | I915_WRITE(ILK_DISPLAY_CHICKEN2, |
| 4757 | I915_READ(ILK_DISPLAY_CHICKEN2) | |
| 4758 | ILK_DPARB_GATE); |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 4759 | } |
| 4760 | |
Damien Lespiau | 4d47e4f | 2012-10-19 17:55:42 +0100 | [diff] [blame] | 4761 | I915_WRITE(ILK_DSPCLK_GATE_D, dspclk_gate); |
| 4762 | |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 4763 | I915_WRITE(ILK_DISPLAY_CHICKEN2, |
| 4764 | I915_READ(ILK_DISPLAY_CHICKEN2) | |
| 4765 | ILK_ELPIN_409_SELECT); |
| 4766 | I915_WRITE(_3D_CHICKEN2, |
| 4767 | _3D_CHICKEN2_WM_READ_PIPELINED << 16 | |
| 4768 | _3D_CHICKEN2_WM_READ_PIPELINED); |
Daniel Vetter | 4358a37 | 2012-10-18 11:49:51 +0200 | [diff] [blame] | 4769 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 4770 | /* WaDisableRenderCachePipelinedFlush:ilk */ |
Daniel Vetter | 4358a37 | 2012-10-18 11:49:51 +0200 | [diff] [blame] | 4771 | I915_WRITE(CACHE_MODE_0, |
| 4772 | _MASKED_BIT_ENABLE(CM0_PIPELINED_RENDER_FLUSH_DISABLE)); |
Daniel Vetter | 3107bd4 | 2012-10-31 22:52:31 +0100 | [diff] [blame] | 4773 | |
Ville Syrjälä | 0e088b8 | 2013-06-07 10:47:04 +0300 | [diff] [blame] | 4774 | g4x_disable_trickle_feed(dev); |
Ville Syrjälä | bdad2b2 | 2013-06-07 10:47:03 +0300 | [diff] [blame] | 4775 | |
Daniel Vetter | 3107bd4 | 2012-10-31 22:52:31 +0100 | [diff] [blame] | 4776 | ibx_init_clock_gating(dev); |
| 4777 | } |
| 4778 | |
| 4779 | static void cpt_init_clock_gating(struct drm_device *dev) |
| 4780 | { |
| 4781 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 4782 | int pipe; |
Paulo Zanoni | 3f704fa | 2013-04-08 15:48:07 -0300 | [diff] [blame] | 4783 | uint32_t val; |
Daniel Vetter | 3107bd4 | 2012-10-31 22:52:31 +0100 | [diff] [blame] | 4784 | |
| 4785 | /* |
| 4786 | * On Ibex Peak and Cougar Point, we need to disable clock |
| 4787 | * gating for the panel power sequencer or it will fail to |
| 4788 | * start up when no ports are active. |
| 4789 | */ |
| 4790 | I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE); |
| 4791 | I915_WRITE(SOUTH_CHICKEN2, I915_READ(SOUTH_CHICKEN2) | |
| 4792 | DPLS_EDP_PPS_FIX_DIS); |
Takashi Iwai | 335c07b | 2012-12-11 11:46:29 +0100 | [diff] [blame] | 4793 | /* The below fixes the weird display corruption, a few pixels shifted |
| 4794 | * downward, on (only) LVDS of some HP laptops with IVY. |
| 4795 | */ |
Paulo Zanoni | 3f704fa | 2013-04-08 15:48:07 -0300 | [diff] [blame] | 4796 | for_each_pipe(pipe) { |
Paulo Zanoni | dc4bd2d | 2013-04-08 15:48:08 -0300 | [diff] [blame] | 4797 | val = I915_READ(TRANS_CHICKEN2(pipe)); |
| 4798 | val |= TRANS_CHICKEN2_TIMING_OVERRIDE; |
| 4799 | val &= ~TRANS_CHICKEN2_FDI_POLARITY_REVERSED; |
Rodrigo Vivi | 41aa344 | 2013-05-09 20:03:18 -0300 | [diff] [blame] | 4800 | if (dev_priv->vbt.fdi_rx_polarity_inverted) |
Paulo Zanoni | 3f704fa | 2013-04-08 15:48:07 -0300 | [diff] [blame] | 4801 | val |= TRANS_CHICKEN2_FDI_POLARITY_REVERSED; |
Paulo Zanoni | dc4bd2d | 2013-04-08 15:48:08 -0300 | [diff] [blame] | 4802 | val &= ~TRANS_CHICKEN2_FRAME_START_DELAY_MASK; |
| 4803 | val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_COUNTER; |
| 4804 | val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_MODESWITCH; |
Paulo Zanoni | 3f704fa | 2013-04-08 15:48:07 -0300 | [diff] [blame] | 4805 | I915_WRITE(TRANS_CHICKEN2(pipe), val); |
| 4806 | } |
Daniel Vetter | 3107bd4 | 2012-10-31 22:52:31 +0100 | [diff] [blame] | 4807 | /* WADP0ClockGatingDisable */ |
| 4808 | for_each_pipe(pipe) { |
| 4809 | I915_WRITE(TRANS_CHICKEN1(pipe), |
| 4810 | TRANS_CHICKEN1_DP0UNIT_GC_DISABLE); |
| 4811 | } |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 4812 | } |
| 4813 | |
Daniel Vetter | 1d7aaa0 | 2013-02-09 21:03:42 +0100 | [diff] [blame] | 4814 | static void gen6_check_mch_setup(struct drm_device *dev) |
| 4815 | { |
| 4816 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 4817 | uint32_t tmp; |
| 4818 | |
| 4819 | tmp = I915_READ(MCH_SSKPD); |
| 4820 | if ((tmp & MCH_SSKPD_WM0_MASK) != MCH_SSKPD_WM0_VAL) { |
| 4821 | DRM_INFO("Wrong MCH_SSKPD value: 0x%08x\n", tmp); |
| 4822 | DRM_INFO("This can cause pipe underruns and display issues.\n"); |
| 4823 | DRM_INFO("Please upgrade your BIOS to fix this.\n"); |
| 4824 | } |
| 4825 | } |
| 4826 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 4827 | static void gen6_init_clock_gating(struct drm_device *dev) |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 4828 | { |
| 4829 | struct drm_i915_private *dev_priv = dev->dev_private; |
Damien Lespiau | 231e54f | 2012-10-19 17:55:41 +0100 | [diff] [blame] | 4830 | uint32_t dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE; |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 4831 | |
Damien Lespiau | 231e54f | 2012-10-19 17:55:41 +0100 | [diff] [blame] | 4832 | I915_WRITE(ILK_DSPCLK_GATE_D, dspclk_gate); |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 4833 | |
| 4834 | I915_WRITE(ILK_DISPLAY_CHICKEN2, |
| 4835 | I915_READ(ILK_DISPLAY_CHICKEN2) | |
| 4836 | ILK_ELPIN_409_SELECT); |
| 4837 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 4838 | /* WaDisableHiZPlanesWhenMSAAEnabled:snb */ |
Daniel Vetter | 4283908 | 2012-12-14 23:38:28 +0100 | [diff] [blame] | 4839 | I915_WRITE(_3D_CHICKEN, |
| 4840 | _MASKED_BIT_ENABLE(_3D_CHICKEN_HIZ_PLANE_DISABLE_MSAA_4X_SNB)); |
| 4841 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 4842 | /* WaSetupGtModeTdRowDispatch:snb */ |
Daniel Vetter | 6547fbd | 2012-12-14 23:38:29 +0100 | [diff] [blame] | 4843 | if (IS_SNB_GT1(dev)) |
| 4844 | I915_WRITE(GEN6_GT_MODE, |
| 4845 | _MASKED_BIT_ENABLE(GEN6_TD_FOUR_ROW_DISPATCH_DISABLE)); |
| 4846 | |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 4847 | I915_WRITE(WM3_LP_ILK, 0); |
| 4848 | I915_WRITE(WM2_LP_ILK, 0); |
| 4849 | I915_WRITE(WM1_LP_ILK, 0); |
| 4850 | |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 4851 | I915_WRITE(CACHE_MODE_0, |
Daniel Vetter | 5074329 | 2012-04-26 22:02:54 +0200 | [diff] [blame] | 4852 | _MASKED_BIT_DISABLE(CM0_STC_EVICT_DISABLE_LRA_SNB)); |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 4853 | |
| 4854 | I915_WRITE(GEN6_UCGCTL1, |
| 4855 | I915_READ(GEN6_UCGCTL1) | |
| 4856 | GEN6_BLBUNIT_CLOCK_GATE_DISABLE | |
| 4857 | GEN6_CSUNIT_CLOCK_GATE_DISABLE); |
| 4858 | |
| 4859 | /* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock |
| 4860 | * gating disable must be set. Failure to set it results in |
| 4861 | * flickering pixels due to Z write ordering failures after |
| 4862 | * some amount of runtime in the Mesa "fire" demo, and Unigine |
| 4863 | * Sanctuary and Tropics, and apparently anything else with |
| 4864 | * alpha test or pixel discard. |
| 4865 | * |
| 4866 | * According to the spec, bit 11 (RCCUNIT) must also be set, |
| 4867 | * but we didn't debug actual testcases to find it out. |
Jesse Barnes | 0f846f8 | 2012-06-14 11:04:47 -0700 | [diff] [blame] | 4868 | * |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 4869 | * Also apply WaDisableVDSUnitClockGating:snb and |
| 4870 | * WaDisableRCPBUnitClockGating:snb. |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 4871 | */ |
| 4872 | I915_WRITE(GEN6_UCGCTL2, |
Jesse Barnes | 0f846f8 | 2012-06-14 11:04:47 -0700 | [diff] [blame] | 4873 | GEN7_VDSUNIT_CLOCK_GATE_DISABLE | |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 4874 | GEN6_RCPBUNIT_CLOCK_GATE_DISABLE | |
| 4875 | GEN6_RCCUNIT_CLOCK_GATE_DISABLE); |
| 4876 | |
| 4877 | /* Bspec says we need to always set all mask bits. */ |
Kenneth Graunke | 26b6e44 | 2012-10-07 08:51:07 -0700 | [diff] [blame] | 4878 | I915_WRITE(_3D_CHICKEN3, (0xFFFF << 16) | |
| 4879 | _3D_CHICKEN3_SF_DISABLE_FASTCLIP_CULL); |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 4880 | |
| 4881 | /* |
| 4882 | * According to the spec the following bits should be |
| 4883 | * set in order to enable memory self-refresh and fbc: |
| 4884 | * The bit21 and bit22 of 0x42000 |
| 4885 | * The bit21 and bit22 of 0x42004 |
| 4886 | * The bit5 and bit7 of 0x42020 |
| 4887 | * The bit14 of 0x70180 |
| 4888 | * The bit14 of 0x71180 |
Damien Lespiau | 4bb3533 | 2013-06-14 15:23:24 +0100 | [diff] [blame] | 4889 | * |
| 4890 | * WaFbcAsynchFlipDisableFbcQueue:snb |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 4891 | */ |
| 4892 | I915_WRITE(ILK_DISPLAY_CHICKEN1, |
| 4893 | I915_READ(ILK_DISPLAY_CHICKEN1) | |
| 4894 | ILK_FBCQ_DIS | ILK_PABSTRETCH_DIS); |
| 4895 | I915_WRITE(ILK_DISPLAY_CHICKEN2, |
| 4896 | I915_READ(ILK_DISPLAY_CHICKEN2) | |
| 4897 | ILK_DPARB_GATE | ILK_VSDPFD_FULL); |
Damien Lespiau | 231e54f | 2012-10-19 17:55:41 +0100 | [diff] [blame] | 4898 | I915_WRITE(ILK_DSPCLK_GATE_D, |
| 4899 | I915_READ(ILK_DSPCLK_GATE_D) | |
| 4900 | ILK_DPARBUNIT_CLOCK_GATE_ENABLE | |
| 4901 | ILK_DPFDUNIT_CLOCK_GATE_ENABLE); |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 4902 | |
Ville Syrjälä | 0e088b8 | 2013-06-07 10:47:04 +0300 | [diff] [blame] | 4903 | g4x_disable_trickle_feed(dev); |
Ben Widawsky | f8f2ac9 | 2012-10-03 19:34:24 -0700 | [diff] [blame] | 4904 | |
| 4905 | /* The default value should be 0x200 according to docs, but the two |
| 4906 | * platforms I checked have a 0 for this. (Maybe BIOS overrides?) */ |
| 4907 | I915_WRITE(GEN6_GT_MODE, _MASKED_BIT_DISABLE(0xffff)); |
| 4908 | I915_WRITE(GEN6_GT_MODE, _MASKED_BIT_ENABLE(GEN6_GT_MODE_HI)); |
Daniel Vetter | 3107bd4 | 2012-10-31 22:52:31 +0100 | [diff] [blame] | 4909 | |
| 4910 | cpt_init_clock_gating(dev); |
Daniel Vetter | 1d7aaa0 | 2013-02-09 21:03:42 +0100 | [diff] [blame] | 4911 | |
| 4912 | gen6_check_mch_setup(dev); |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 4913 | } |
| 4914 | |
| 4915 | static void gen7_setup_fixed_func_scheduler(struct drm_i915_private *dev_priv) |
| 4916 | { |
| 4917 | uint32_t reg = I915_READ(GEN7_FF_THREAD_MODE); |
| 4918 | |
| 4919 | reg &= ~GEN7_FF_SCHED_MASK; |
| 4920 | reg |= GEN7_FF_TS_SCHED_HW; |
| 4921 | reg |= GEN7_FF_VS_SCHED_HW; |
| 4922 | reg |= GEN7_FF_DS_SCHED_HW; |
| 4923 | |
Ben Widawsky | 41c0b3a | 2013-01-26 11:52:00 -0800 | [diff] [blame] | 4924 | if (IS_HASWELL(dev_priv->dev)) |
| 4925 | reg &= ~GEN7_FF_VS_REF_CNT_FFME; |
| 4926 | |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 4927 | I915_WRITE(GEN7_FF_THREAD_MODE, reg); |
| 4928 | } |
| 4929 | |
Paulo Zanoni | 17a303e | 2012-11-20 15:12:07 -0200 | [diff] [blame] | 4930 | static void lpt_init_clock_gating(struct drm_device *dev) |
| 4931 | { |
| 4932 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 4933 | |
| 4934 | /* |
| 4935 | * TODO: this bit should only be enabled when really needed, then |
| 4936 | * disabled when not needed anymore in order to save power. |
| 4937 | */ |
| 4938 | if (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) |
| 4939 | I915_WRITE(SOUTH_DSPCLK_GATE_D, |
| 4940 | I915_READ(SOUTH_DSPCLK_GATE_D) | |
| 4941 | PCH_LP_PARTITION_LEVEL_DISABLE); |
Paulo Zanoni | 0a790cd | 2013-04-17 18:15:49 -0300 | [diff] [blame] | 4942 | |
| 4943 | /* WADPOClockGatingDisable:hsw */ |
| 4944 | I915_WRITE(_TRANSA_CHICKEN1, |
| 4945 | I915_READ(_TRANSA_CHICKEN1) | |
| 4946 | TRANS_CHICKEN1_DP0UNIT_GC_DISABLE); |
Paulo Zanoni | 17a303e | 2012-11-20 15:12:07 -0200 | [diff] [blame] | 4947 | } |
| 4948 | |
Imre Deak | 7d708ee | 2013-04-17 14:04:50 +0300 | [diff] [blame] | 4949 | static void lpt_suspend_hw(struct drm_device *dev) |
| 4950 | { |
| 4951 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 4952 | |
| 4953 | if (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) { |
| 4954 | uint32_t val = I915_READ(SOUTH_DSPCLK_GATE_D); |
| 4955 | |
| 4956 | val &= ~PCH_LP_PARTITION_LEVEL_DISABLE; |
| 4957 | I915_WRITE(SOUTH_DSPCLK_GATE_D, val); |
| 4958 | } |
| 4959 | } |
| 4960 | |
Eugeni Dodonov | cad2a2d | 2012-07-02 11:51:09 -0300 | [diff] [blame] | 4961 | static void haswell_init_clock_gating(struct drm_device *dev) |
| 4962 | { |
| 4963 | struct drm_i915_private *dev_priv = dev->dev_private; |
Eugeni Dodonov | cad2a2d | 2012-07-02 11:51:09 -0300 | [diff] [blame] | 4964 | |
| 4965 | I915_WRITE(WM3_LP_ILK, 0); |
| 4966 | I915_WRITE(WM2_LP_ILK, 0); |
| 4967 | I915_WRITE(WM1_LP_ILK, 0); |
| 4968 | |
| 4969 | /* According to the spec, bit 13 (RCZUNIT) must be set on IVB. |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 4970 | * This implements the WaDisableRCZUnitClockGating:hsw workaround. |
Eugeni Dodonov | cad2a2d | 2012-07-02 11:51:09 -0300 | [diff] [blame] | 4971 | */ |
| 4972 | I915_WRITE(GEN6_UCGCTL2, GEN6_RCZUNIT_CLOCK_GATE_DISABLE); |
| 4973 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 4974 | /* Apply the WaDisableRHWOOptimizationForRenderHang:hsw workaround. */ |
Eugeni Dodonov | cad2a2d | 2012-07-02 11:51:09 -0300 | [diff] [blame] | 4975 | I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1, |
| 4976 | GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC); |
| 4977 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 4978 | /* WaApplyL3ControlAndL3ChickenMode:hsw */ |
Eugeni Dodonov | cad2a2d | 2012-07-02 11:51:09 -0300 | [diff] [blame] | 4979 | I915_WRITE(GEN7_L3CNTLREG1, |
| 4980 | GEN7_WA_FOR_GEN7_L3_CONTROL); |
| 4981 | I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER, |
| 4982 | GEN7_WA_L3_CHICKEN_MODE); |
| 4983 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 4984 | /* This is required by WaCatErrorRejectionIssue:hsw */ |
Eugeni Dodonov | cad2a2d | 2012-07-02 11:51:09 -0300 | [diff] [blame] | 4985 | I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, |
| 4986 | I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | |
| 4987 | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); |
| 4988 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 4989 | /* WaVSRefCountFullforceMissDisable:hsw */ |
Eugeni Dodonov | cad2a2d | 2012-07-02 11:51:09 -0300 | [diff] [blame] | 4990 | gen7_setup_fixed_func_scheduler(dev_priv); |
| 4991 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 4992 | /* WaDisable4x2SubspanOptimization:hsw */ |
Eugeni Dodonov | cad2a2d | 2012-07-02 11:51:09 -0300 | [diff] [blame] | 4993 | I915_WRITE(CACHE_MODE_1, |
| 4994 | _MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE)); |
Eugeni Dodonov | 1544d9d | 2012-07-02 11:51:10 -0300 | [diff] [blame] | 4995 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 4996 | /* WaSwitchSolVfFArbitrationPriority:hsw */ |
Ben Widawsky | e3dff58 | 2013-03-20 14:49:14 -0700 | [diff] [blame] | 4997 | I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL); |
| 4998 | |
Paulo Zanoni | 90a8864 | 2013-05-03 17:23:45 -0300 | [diff] [blame] | 4999 | /* WaRsPkgCStateDisplayPMReq:hsw */ |
| 5000 | I915_WRITE(CHICKEN_PAR1_1, |
| 5001 | I915_READ(CHICKEN_PAR1_1) | FORCE_ARB_IDLE_PLANES); |
Eugeni Dodonov | 1544d9d | 2012-07-02 11:51:10 -0300 | [diff] [blame] | 5002 | |
Paulo Zanoni | 17a303e | 2012-11-20 15:12:07 -0200 | [diff] [blame] | 5003 | lpt_init_clock_gating(dev); |
Eugeni Dodonov | cad2a2d | 2012-07-02 11:51:09 -0300 | [diff] [blame] | 5004 | } |
| 5005 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 5006 | static void ivybridge_init_clock_gating(struct drm_device *dev) |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5007 | { |
| 5008 | struct drm_i915_private *dev_priv = dev->dev_private; |
Ben Widawsky | 2084822 | 2012-05-04 18:58:59 -0700 | [diff] [blame] | 5009 | uint32_t snpcr; |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5010 | |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5011 | I915_WRITE(WM3_LP_ILK, 0); |
| 5012 | I915_WRITE(WM2_LP_ILK, 0); |
| 5013 | I915_WRITE(WM1_LP_ILK, 0); |
| 5014 | |
Damien Lespiau | 231e54f | 2012-10-19 17:55:41 +0100 | [diff] [blame] | 5015 | I915_WRITE(ILK_DSPCLK_GATE_D, ILK_VRHUNIT_CLOCK_GATE_DISABLE); |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5016 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 5017 | /* WaDisableEarlyCull:ivb */ |
Jesse Barnes | 87f8020 | 2012-10-02 17:43:41 -0500 | [diff] [blame] | 5018 | I915_WRITE(_3D_CHICKEN3, |
| 5019 | _MASKED_BIT_ENABLE(_3D_CHICKEN_SF_DISABLE_OBJEND_CULL)); |
| 5020 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 5021 | /* WaDisableBackToBackFlipFix:ivb */ |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5022 | I915_WRITE(IVB_CHICKEN3, |
| 5023 | CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE | |
| 5024 | CHICKEN3_DGMG_DONE_FIX_DISABLE); |
| 5025 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 5026 | /* WaDisablePSDDualDispatchEnable:ivb */ |
Jesse Barnes | 12f3382 | 2012-10-25 12:15:45 -0700 | [diff] [blame] | 5027 | if (IS_IVB_GT1(dev)) |
| 5028 | I915_WRITE(GEN7_HALF_SLICE_CHICKEN1, |
| 5029 | _MASKED_BIT_ENABLE(GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE)); |
| 5030 | else |
| 5031 | I915_WRITE(GEN7_HALF_SLICE_CHICKEN1_GT2, |
| 5032 | _MASKED_BIT_ENABLE(GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE)); |
| 5033 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 5034 | /* Apply the WaDisableRHWOOptimizationForRenderHang:ivb workaround. */ |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5035 | I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1, |
| 5036 | GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC); |
| 5037 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 5038 | /* WaApplyL3ControlAndL3ChickenMode:ivb */ |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5039 | I915_WRITE(GEN7_L3CNTLREG1, |
| 5040 | GEN7_WA_FOR_GEN7_L3_CONTROL); |
| 5041 | I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER, |
Jesse Barnes | 8ab4397 | 2012-10-25 12:15:42 -0700 | [diff] [blame] | 5042 | GEN7_WA_L3_CHICKEN_MODE); |
| 5043 | if (IS_IVB_GT1(dev)) |
| 5044 | I915_WRITE(GEN7_ROW_CHICKEN2, |
| 5045 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); |
| 5046 | else |
| 5047 | I915_WRITE(GEN7_ROW_CHICKEN2_GT2, |
| 5048 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); |
| 5049 | |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5050 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 5051 | /* WaForceL3Serialization:ivb */ |
Jesse Barnes | 61939d9 | 2012-10-02 17:43:38 -0500 | [diff] [blame] | 5052 | I915_WRITE(GEN7_L3SQCREG4, I915_READ(GEN7_L3SQCREG4) & |
| 5053 | ~L3SQ_URB_READ_CAM_MATCH_DISABLE); |
| 5054 | |
Jesse Barnes | 0f846f8 | 2012-06-14 11:04:47 -0700 | [diff] [blame] | 5055 | /* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock |
| 5056 | * gating disable must be set. Failure to set it results in |
| 5057 | * flickering pixels due to Z write ordering failures after |
| 5058 | * some amount of runtime in the Mesa "fire" demo, and Unigine |
| 5059 | * Sanctuary and Tropics, and apparently anything else with |
| 5060 | * alpha test or pixel discard. |
| 5061 | * |
| 5062 | * According to the spec, bit 11 (RCCUNIT) must also be set, |
| 5063 | * but we didn't debug actual testcases to find it out. |
| 5064 | * |
| 5065 | * According to the spec, bit 13 (RCZUNIT) must be set on IVB. |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 5066 | * This implements the WaDisableRCZUnitClockGating:ivb workaround. |
Jesse Barnes | 0f846f8 | 2012-06-14 11:04:47 -0700 | [diff] [blame] | 5067 | */ |
| 5068 | I915_WRITE(GEN6_UCGCTL2, |
| 5069 | GEN6_RCZUNIT_CLOCK_GATE_DISABLE | |
| 5070 | GEN6_RCCUNIT_CLOCK_GATE_DISABLE); |
| 5071 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 5072 | /* This is required by WaCatErrorRejectionIssue:ivb */ |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5073 | I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, |
| 5074 | I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | |
| 5075 | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); |
| 5076 | |
Ville Syrjälä | 0e088b8 | 2013-06-07 10:47:04 +0300 | [diff] [blame] | 5077 | g4x_disable_trickle_feed(dev); |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5078 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 5079 | /* WaVSRefCountFullforceMissDisable:ivb */ |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5080 | gen7_setup_fixed_func_scheduler(dev_priv); |
Daniel Vetter | 97e1930 | 2012-04-24 16:00:21 +0200 | [diff] [blame] | 5081 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 5082 | /* WaDisable4x2SubspanOptimization:ivb */ |
Daniel Vetter | 97e1930 | 2012-04-24 16:00:21 +0200 | [diff] [blame] | 5083 | I915_WRITE(CACHE_MODE_1, |
| 5084 | _MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE)); |
Ben Widawsky | 2084822 | 2012-05-04 18:58:59 -0700 | [diff] [blame] | 5085 | |
| 5086 | snpcr = I915_READ(GEN6_MBCUNIT_SNPCR); |
| 5087 | snpcr &= ~GEN6_MBC_SNPCR_MASK; |
| 5088 | snpcr |= GEN6_MBC_SNPCR_MED; |
| 5089 | I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr); |
Daniel Vetter | 3107bd4 | 2012-10-31 22:52:31 +0100 | [diff] [blame] | 5090 | |
Ben Widawsky | ab5c608 | 2013-04-05 13:12:41 -0700 | [diff] [blame] | 5091 | if (!HAS_PCH_NOP(dev)) |
| 5092 | cpt_init_clock_gating(dev); |
Daniel Vetter | 1d7aaa0 | 2013-02-09 21:03:42 +0100 | [diff] [blame] | 5093 | |
| 5094 | gen6_check_mch_setup(dev); |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5095 | } |
| 5096 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 5097 | static void valleyview_init_clock_gating(struct drm_device *dev) |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5098 | { |
| 5099 | struct drm_i915_private *dev_priv = dev->dev_private; |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5100 | |
Ville Syrjälä | d7fe0cc | 2013-05-21 18:01:50 +0300 | [diff] [blame] | 5101 | I915_WRITE(DSPCLK_GATE_D, VRHUNIT_CLOCK_GATE_DISABLE); |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5102 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 5103 | /* WaDisableEarlyCull:vlv */ |
Jesse Barnes | 87f8020 | 2012-10-02 17:43:41 -0500 | [diff] [blame] | 5104 | I915_WRITE(_3D_CHICKEN3, |
| 5105 | _MASKED_BIT_ENABLE(_3D_CHICKEN_SF_DISABLE_OBJEND_CULL)); |
| 5106 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 5107 | /* WaDisableBackToBackFlipFix:vlv */ |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5108 | I915_WRITE(IVB_CHICKEN3, |
| 5109 | CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE | |
| 5110 | CHICKEN3_DGMG_DONE_FIX_DISABLE); |
| 5111 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 5112 | /* WaDisablePSDDualDispatchEnable:vlv */ |
Jesse Barnes | 12f3382 | 2012-10-25 12:15:45 -0700 | [diff] [blame] | 5113 | I915_WRITE(GEN7_HALF_SLICE_CHICKEN1, |
Jesse Barnes | d3bc030 | 2013-03-08 10:45:51 -0800 | [diff] [blame] | 5114 | _MASKED_BIT_ENABLE(GEN7_MAX_PS_THREAD_DEP | |
| 5115 | GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE)); |
Jesse Barnes | 12f3382 | 2012-10-25 12:15:45 -0700 | [diff] [blame] | 5116 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 5117 | /* Apply the WaDisableRHWOOptimizationForRenderHang:vlv workaround. */ |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5118 | I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1, |
| 5119 | GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC); |
| 5120 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 5121 | /* WaApplyL3ControlAndL3ChickenMode:vlv */ |
Jesse Barnes | d0cf5ea | 2012-10-25 12:15:41 -0700 | [diff] [blame] | 5122 | I915_WRITE(GEN7_L3CNTLREG1, I915_READ(GEN7_L3CNTLREG1) | GEN7_L3AGDIS); |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5123 | I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER, GEN7_WA_L3_CHICKEN_MODE); |
| 5124 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 5125 | /* WaForceL3Serialization:vlv */ |
Jesse Barnes | 61939d9 | 2012-10-02 17:43:38 -0500 | [diff] [blame] | 5126 | I915_WRITE(GEN7_L3SQCREG4, I915_READ(GEN7_L3SQCREG4) & |
| 5127 | ~L3SQ_URB_READ_CAM_MATCH_DISABLE); |
| 5128 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 5129 | /* WaDisableDopClockGating:vlv */ |
Jesse Barnes | 8ab4397 | 2012-10-25 12:15:42 -0700 | [diff] [blame] | 5130 | I915_WRITE(GEN7_ROW_CHICKEN2, |
| 5131 | _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE)); |
| 5132 | |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 5133 | /* This is required by WaCatErrorRejectionIssue:vlv */ |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5134 | I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG, |
| 5135 | I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | |
| 5136 | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); |
| 5137 | |
Jesse Barnes | 0f846f8 | 2012-06-14 11:04:47 -0700 | [diff] [blame] | 5138 | /* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock |
| 5139 | * gating disable must be set. Failure to set it results in |
| 5140 | * flickering pixels due to Z write ordering failures after |
| 5141 | * some amount of runtime in the Mesa "fire" demo, and Unigine |
| 5142 | * Sanctuary and Tropics, and apparently anything else with |
| 5143 | * alpha test or pixel discard. |
| 5144 | * |
| 5145 | * According to the spec, bit 11 (RCCUNIT) must also be set, |
| 5146 | * but we didn't debug actual testcases to find it out. |
| 5147 | * |
| 5148 | * According to the spec, bit 13 (RCZUNIT) must be set on IVB. |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 5149 | * This implements the WaDisableRCZUnitClockGating:vlv workaround. |
Jesse Barnes | 0f846f8 | 2012-06-14 11:04:47 -0700 | [diff] [blame] | 5150 | * |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 5151 | * Also apply WaDisableVDSUnitClockGating:vlv and |
| 5152 | * WaDisableRCPBUnitClockGating:vlv. |
Jesse Barnes | 0f846f8 | 2012-06-14 11:04:47 -0700 | [diff] [blame] | 5153 | */ |
| 5154 | I915_WRITE(GEN6_UCGCTL2, |
| 5155 | GEN7_VDSUNIT_CLOCK_GATE_DISABLE | |
Jesse Barnes | 6edaa7f | 2012-06-14 11:04:49 -0700 | [diff] [blame] | 5156 | GEN7_TDLUNIT_CLOCK_GATE_DISABLE | |
Jesse Barnes | 0f846f8 | 2012-06-14 11:04:47 -0700 | [diff] [blame] | 5157 | GEN6_RCZUNIT_CLOCK_GATE_DISABLE | |
| 5158 | GEN6_RCPBUNIT_CLOCK_GATE_DISABLE | |
| 5159 | GEN6_RCCUNIT_CLOCK_GATE_DISABLE); |
| 5160 | |
Jesse Barnes | e3f33d4 | 2012-06-14 11:04:50 -0700 | [diff] [blame] | 5161 | I915_WRITE(GEN7_UCGCTL4, GEN7_L3BANK2X_CLOCK_GATE_DISABLE); |
| 5162 | |
Ville Syrjälä | e0d8d59 | 2013-06-12 22:11:18 +0300 | [diff] [blame] | 5163 | I915_WRITE(MI_ARB_VLV, MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE); |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5164 | |
Daniel Vetter | 6b26c86 | 2012-04-24 14:04:12 +0200 | [diff] [blame] | 5165 | I915_WRITE(CACHE_MODE_1, |
| 5166 | _MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE)); |
Jesse Barnes | 7983117 | 2012-06-20 10:53:12 -0700 | [diff] [blame] | 5167 | |
| 5168 | /* |
Damien Lespiau | ecdb4eb7 | 2013-05-03 18:48:10 +0100 | [diff] [blame] | 5169 | * WaDisableVLVClockGating_VBIIssue:vlv |
Jesse Barnes | 2d80957 | 2012-10-25 12:15:44 -0700 | [diff] [blame] | 5170 | * Disable clock gating on th GCFG unit to prevent a delay |
| 5171 | * in the reporting of vblank events. |
| 5172 | */ |
Jesse Barnes | 4e8c84a | 2013-03-08 10:45:54 -0800 | [diff] [blame] | 5173 | I915_WRITE(VLV_GUNIT_CLOCK_GATE, 0xffffffff); |
| 5174 | |
| 5175 | /* Conservative clock gating settings for now */ |
| 5176 | I915_WRITE(0x9400, 0xffffffff); |
| 5177 | I915_WRITE(0x9404, 0xffffffff); |
| 5178 | I915_WRITE(0x9408, 0xffffffff); |
| 5179 | I915_WRITE(0x940c, 0xffffffff); |
| 5180 | I915_WRITE(0x9410, 0xffffffff); |
| 5181 | I915_WRITE(0x9414, 0xffffffff); |
| 5182 | I915_WRITE(0x9418, 0xffffffff); |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5183 | } |
| 5184 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 5185 | static void g4x_init_clock_gating(struct drm_device *dev) |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5186 | { |
| 5187 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 5188 | uint32_t dspclk_gate; |
| 5189 | |
| 5190 | I915_WRITE(RENCLK_GATE_D1, 0); |
| 5191 | I915_WRITE(RENCLK_GATE_D2, VF_UNIT_CLOCK_GATE_DISABLE | |
| 5192 | GS_UNIT_CLOCK_GATE_DISABLE | |
| 5193 | CL_UNIT_CLOCK_GATE_DISABLE); |
| 5194 | I915_WRITE(RAMCLK_GATE_D, 0); |
| 5195 | dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE | |
| 5196 | OVRUNIT_CLOCK_GATE_DISABLE | |
| 5197 | OVCUNIT_CLOCK_GATE_DISABLE; |
| 5198 | if (IS_GM45(dev)) |
| 5199 | dspclk_gate |= DSSUNIT_CLOCK_GATE_DISABLE; |
| 5200 | I915_WRITE(DSPCLK_GATE_D, dspclk_gate); |
Daniel Vetter | 4358a37 | 2012-10-18 11:49:51 +0200 | [diff] [blame] | 5201 | |
| 5202 | /* WaDisableRenderCachePipelinedFlush */ |
| 5203 | I915_WRITE(CACHE_MODE_0, |
| 5204 | _MASKED_BIT_ENABLE(CM0_PIPELINED_RENDER_FLUSH_DISABLE)); |
Ville Syrjälä | de1aa62 | 2013-06-07 10:47:01 +0300 | [diff] [blame] | 5205 | |
Ville Syrjälä | 0e088b8 | 2013-06-07 10:47:04 +0300 | [diff] [blame] | 5206 | g4x_disable_trickle_feed(dev); |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5207 | } |
| 5208 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 5209 | static void crestline_init_clock_gating(struct drm_device *dev) |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5210 | { |
| 5211 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 5212 | |
| 5213 | I915_WRITE(RENCLK_GATE_D1, I965_RCC_CLOCK_GATE_DISABLE); |
| 5214 | I915_WRITE(RENCLK_GATE_D2, 0); |
| 5215 | I915_WRITE(DSPCLK_GATE_D, 0); |
| 5216 | I915_WRITE(RAMCLK_GATE_D, 0); |
| 5217 | I915_WRITE16(DEUC, 0); |
Ville Syrjälä | 20f9496 | 2013-06-07 10:47:02 +0300 | [diff] [blame] | 5218 | I915_WRITE(MI_ARB_STATE, |
| 5219 | _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE)); |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5220 | } |
| 5221 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 5222 | static void broadwater_init_clock_gating(struct drm_device *dev) |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5223 | { |
| 5224 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 5225 | |
| 5226 | I915_WRITE(RENCLK_GATE_D1, I965_RCZ_CLOCK_GATE_DISABLE | |
| 5227 | I965_RCC_CLOCK_GATE_DISABLE | |
| 5228 | I965_RCPB_CLOCK_GATE_DISABLE | |
| 5229 | I965_ISC_CLOCK_GATE_DISABLE | |
| 5230 | I965_FBC_CLOCK_GATE_DISABLE); |
| 5231 | I915_WRITE(RENCLK_GATE_D2, 0); |
Ville Syrjälä | 20f9496 | 2013-06-07 10:47:02 +0300 | [diff] [blame] | 5232 | I915_WRITE(MI_ARB_STATE, |
| 5233 | _MASKED_BIT_ENABLE(MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE)); |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5234 | } |
| 5235 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 5236 | static void gen3_init_clock_gating(struct drm_device *dev) |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5237 | { |
| 5238 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 5239 | u32 dstate = I915_READ(D_STATE); |
| 5240 | |
| 5241 | dstate |= DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING | |
| 5242 | DSTATE_DOT_CLOCK_GATING; |
| 5243 | I915_WRITE(D_STATE, dstate); |
Chris Wilson | 13a86b8 | 2012-04-24 14:51:43 +0100 | [diff] [blame] | 5244 | |
| 5245 | if (IS_PINEVIEW(dev)) |
| 5246 | I915_WRITE(ECOSKPD, _MASKED_BIT_ENABLE(ECO_GATING_CX_ONLY)); |
Daniel Vetter | 974a3b0 | 2012-09-09 11:54:16 +0200 | [diff] [blame] | 5247 | |
| 5248 | /* IIR "flip pending" means done if this bit is set */ |
| 5249 | I915_WRITE(ECOSKPD, _MASKED_BIT_DISABLE(ECO_FLIP_DONE)); |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5250 | } |
| 5251 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 5252 | static void i85x_init_clock_gating(struct drm_device *dev) |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5253 | { |
| 5254 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 5255 | |
| 5256 | I915_WRITE(RENCLK_GATE_D1, SV_CLOCK_GATE_DISABLE); |
| 5257 | } |
| 5258 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 5259 | static void i830_init_clock_gating(struct drm_device *dev) |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5260 | { |
| 5261 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 5262 | |
| 5263 | I915_WRITE(DSPCLK_GATE_D, OVRUNIT_CLOCK_GATE_DISABLE); |
| 5264 | } |
| 5265 | |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5266 | void intel_init_clock_gating(struct drm_device *dev) |
| 5267 | { |
| 5268 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 5269 | |
| 5270 | dev_priv->display.init_clock_gating(dev); |
Eugeni Dodonov | 6f1d69b | 2012-04-18 15:29:25 -0300 | [diff] [blame] | 5271 | } |
| 5272 | |
Imre Deak | 7d708ee | 2013-04-17 14:04:50 +0300 | [diff] [blame] | 5273 | void intel_suspend_hw(struct drm_device *dev) |
| 5274 | { |
| 5275 | if (HAS_PCH_LPT(dev)) |
| 5276 | lpt_suspend_hw(dev); |
| 5277 | } |
| 5278 | |
Paulo Zanoni | 15d199e | 2013-03-22 14:14:13 -0300 | [diff] [blame] | 5279 | /** |
| 5280 | * We should only use the power well if we explicitly asked the hardware to |
| 5281 | * enable it, so check if it's enabled and also check if we've requested it to |
| 5282 | * be enabled. |
| 5283 | */ |
Paulo Zanoni | b97186f | 2013-05-03 12:15:36 -0300 | [diff] [blame] | 5284 | bool intel_display_power_enabled(struct drm_device *dev, |
| 5285 | enum intel_display_power_domain domain) |
Paulo Zanoni | 15d199e | 2013-03-22 14:14:13 -0300 | [diff] [blame] | 5286 | { |
| 5287 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 5288 | |
Paulo Zanoni | b97186f | 2013-05-03 12:15:36 -0300 | [diff] [blame] | 5289 | if (!HAS_POWER_WELL(dev)) |
| 5290 | return true; |
| 5291 | |
| 5292 | switch (domain) { |
| 5293 | case POWER_DOMAIN_PIPE_A: |
| 5294 | case POWER_DOMAIN_TRANSCODER_EDP: |
| 5295 | return true; |
| 5296 | case POWER_DOMAIN_PIPE_B: |
| 5297 | case POWER_DOMAIN_PIPE_C: |
| 5298 | case POWER_DOMAIN_PIPE_A_PANEL_FITTER: |
| 5299 | case POWER_DOMAIN_PIPE_B_PANEL_FITTER: |
| 5300 | case POWER_DOMAIN_PIPE_C_PANEL_FITTER: |
| 5301 | case POWER_DOMAIN_TRANSCODER_A: |
| 5302 | case POWER_DOMAIN_TRANSCODER_B: |
| 5303 | case POWER_DOMAIN_TRANSCODER_C: |
Paulo Zanoni | 15d199e | 2013-03-22 14:14:13 -0300 | [diff] [blame] | 5304 | return I915_READ(HSW_PWR_WELL_DRIVER) == |
Paulo Zanoni | 6aedd1f | 2013-08-02 16:22:25 -0300 | [diff] [blame] | 5305 | (HSW_PWR_WELL_ENABLE_REQUEST | HSW_PWR_WELL_STATE_ENABLED); |
Paulo Zanoni | b97186f | 2013-05-03 12:15:36 -0300 | [diff] [blame] | 5306 | default: |
| 5307 | BUG(); |
| 5308 | } |
Paulo Zanoni | 15d199e | 2013-03-22 14:14:13 -0300 | [diff] [blame] | 5309 | } |
| 5310 | |
Wang Xingchao | a38911a | 2013-05-30 22:07:11 +0800 | [diff] [blame] | 5311 | static void __intel_set_power_well(struct drm_device *dev, bool enable) |
Eugeni Dodonov | d0d3e51 | 2012-05-09 15:37:16 -0300 | [diff] [blame] | 5312 | { |
| 5313 | struct drm_i915_private *dev_priv = dev->dev_private; |
Paulo Zanoni | fa42e23 | 2013-01-25 16:59:11 -0200 | [diff] [blame] | 5314 | bool is_enabled, enable_requested; |
| 5315 | uint32_t tmp; |
Eugeni Dodonov | d0d3e51 | 2012-05-09 15:37:16 -0300 | [diff] [blame] | 5316 | |
Paulo Zanoni | fa42e23 | 2013-01-25 16:59:11 -0200 | [diff] [blame] | 5317 | tmp = I915_READ(HSW_PWR_WELL_DRIVER); |
Paulo Zanoni | 6aedd1f | 2013-08-02 16:22:25 -0300 | [diff] [blame] | 5318 | is_enabled = tmp & HSW_PWR_WELL_STATE_ENABLED; |
| 5319 | enable_requested = tmp & HSW_PWR_WELL_ENABLE_REQUEST; |
Eugeni Dodonov | d0d3e51 | 2012-05-09 15:37:16 -0300 | [diff] [blame] | 5320 | |
Paulo Zanoni | fa42e23 | 2013-01-25 16:59:11 -0200 | [diff] [blame] | 5321 | if (enable) { |
| 5322 | if (!enable_requested) |
Paulo Zanoni | 6aedd1f | 2013-08-02 16:22:25 -0300 | [diff] [blame] | 5323 | I915_WRITE(HSW_PWR_WELL_DRIVER, |
| 5324 | HSW_PWR_WELL_ENABLE_REQUEST); |
Eugeni Dodonov | d0d3e51 | 2012-05-09 15:37:16 -0300 | [diff] [blame] | 5325 | |
Paulo Zanoni | fa42e23 | 2013-01-25 16:59:11 -0200 | [diff] [blame] | 5326 | if (!is_enabled) { |
| 5327 | DRM_DEBUG_KMS("Enabling power well\n"); |
| 5328 | if (wait_for((I915_READ(HSW_PWR_WELL_DRIVER) & |
Paulo Zanoni | 6aedd1f | 2013-08-02 16:22:25 -0300 | [diff] [blame] | 5329 | HSW_PWR_WELL_STATE_ENABLED), 20)) |
Paulo Zanoni | fa42e23 | 2013-01-25 16:59:11 -0200 | [diff] [blame] | 5330 | DRM_ERROR("Timeout enabling power well\n"); |
| 5331 | } |
| 5332 | } else { |
| 5333 | if (enable_requested) { |
Paulo Zanoni | 9dbd8fe | 2013-07-23 10:48:11 -0300 | [diff] [blame] | 5334 | unsigned long irqflags; |
| 5335 | enum pipe p; |
| 5336 | |
Paulo Zanoni | fa42e23 | 2013-01-25 16:59:11 -0200 | [diff] [blame] | 5337 | I915_WRITE(HSW_PWR_WELL_DRIVER, 0); |
Paulo Zanoni | 9dbd8fe | 2013-07-23 10:48:11 -0300 | [diff] [blame] | 5338 | POSTING_READ(HSW_PWR_WELL_DRIVER); |
Paulo Zanoni | fa42e23 | 2013-01-25 16:59:11 -0200 | [diff] [blame] | 5339 | DRM_DEBUG_KMS("Requesting to disable the power well\n"); |
Paulo Zanoni | 9dbd8fe | 2013-07-23 10:48:11 -0300 | [diff] [blame] | 5340 | |
| 5341 | /* |
| 5342 | * After this, the registers on the pipes that are part |
| 5343 | * of the power well will become zero, so we have to |
| 5344 | * adjust our counters according to that. |
| 5345 | * |
| 5346 | * FIXME: Should we do this in general in |
| 5347 | * drm_vblank_post_modeset? |
| 5348 | */ |
| 5349 | spin_lock_irqsave(&dev->vbl_lock, irqflags); |
| 5350 | for_each_pipe(p) |
| 5351 | if (p != PIPE_A) |
| 5352 | dev->last_vblank[p] = 0; |
| 5353 | spin_unlock_irqrestore(&dev->vbl_lock, irqflags); |
Eugeni Dodonov | d0d3e51 | 2012-05-09 15:37:16 -0300 | [diff] [blame] | 5354 | } |
| 5355 | } |
Paulo Zanoni | fa42e23 | 2013-01-25 16:59:11 -0200 | [diff] [blame] | 5356 | } |
Eugeni Dodonov | d0d3e51 | 2012-05-09 15:37:16 -0300 | [diff] [blame] | 5357 | |
Wang Xingchao | a38911a | 2013-05-30 22:07:11 +0800 | [diff] [blame] | 5358 | static struct i915_power_well *hsw_pwr; |
| 5359 | |
| 5360 | /* Display audio driver power well request */ |
| 5361 | void i915_request_power_well(void) |
| 5362 | { |
| 5363 | if (WARN_ON(!hsw_pwr)) |
| 5364 | return; |
| 5365 | |
| 5366 | spin_lock_irq(&hsw_pwr->lock); |
| 5367 | if (!hsw_pwr->count++ && |
| 5368 | !hsw_pwr->i915_request) |
| 5369 | __intel_set_power_well(hsw_pwr->device, true); |
| 5370 | spin_unlock_irq(&hsw_pwr->lock); |
| 5371 | } |
| 5372 | EXPORT_SYMBOL_GPL(i915_request_power_well); |
| 5373 | |
| 5374 | /* Display audio driver power well release */ |
| 5375 | void i915_release_power_well(void) |
| 5376 | { |
| 5377 | if (WARN_ON(!hsw_pwr)) |
| 5378 | return; |
| 5379 | |
| 5380 | spin_lock_irq(&hsw_pwr->lock); |
| 5381 | WARN_ON(!hsw_pwr->count); |
| 5382 | if (!--hsw_pwr->count && |
| 5383 | !hsw_pwr->i915_request) |
| 5384 | __intel_set_power_well(hsw_pwr->device, false); |
| 5385 | spin_unlock_irq(&hsw_pwr->lock); |
| 5386 | } |
| 5387 | EXPORT_SYMBOL_GPL(i915_release_power_well); |
| 5388 | |
| 5389 | int i915_init_power_well(struct drm_device *dev) |
| 5390 | { |
| 5391 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 5392 | |
| 5393 | hsw_pwr = &dev_priv->power_well; |
| 5394 | |
| 5395 | hsw_pwr->device = dev; |
| 5396 | spin_lock_init(&hsw_pwr->lock); |
| 5397 | hsw_pwr->count = 0; |
| 5398 | |
| 5399 | return 0; |
| 5400 | } |
| 5401 | |
| 5402 | void i915_remove_power_well(struct drm_device *dev) |
| 5403 | { |
| 5404 | hsw_pwr = NULL; |
| 5405 | } |
| 5406 | |
| 5407 | void intel_set_power_well(struct drm_device *dev, bool enable) |
| 5408 | { |
| 5409 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 5410 | struct i915_power_well *power_well = &dev_priv->power_well; |
| 5411 | |
| 5412 | if (!HAS_POWER_WELL(dev)) |
| 5413 | return; |
| 5414 | |
| 5415 | if (!i915_disable_power_well && !enable) |
| 5416 | return; |
| 5417 | |
| 5418 | spin_lock_irq(&power_well->lock); |
| 5419 | power_well->i915_request = enable; |
| 5420 | |
| 5421 | /* only reject "disable" power well request */ |
| 5422 | if (power_well->count && !enable) { |
| 5423 | spin_unlock_irq(&power_well->lock); |
| 5424 | return; |
| 5425 | } |
| 5426 | |
| 5427 | __intel_set_power_well(dev, enable); |
| 5428 | spin_unlock_irq(&power_well->lock); |
| 5429 | } |
| 5430 | |
Paulo Zanoni | fa42e23 | 2013-01-25 16:59:11 -0200 | [diff] [blame] | 5431 | /* |
| 5432 | * Starting with Haswell, we have a "Power Down Well" that can be turned off |
| 5433 | * when not needed anymore. We have 4 registers that can request the power well |
| 5434 | * to be enabled, and it will only be disabled if none of the registers is |
| 5435 | * requesting it to be enabled. |
| 5436 | */ |
| 5437 | void intel_init_power_well(struct drm_device *dev) |
| 5438 | { |
| 5439 | struct drm_i915_private *dev_priv = dev->dev_private; |
Eugeni Dodonov | d0d3e51 | 2012-05-09 15:37:16 -0300 | [diff] [blame] | 5440 | |
Paulo Zanoni | 86d52df | 2013-03-06 20:03:18 -0300 | [diff] [blame] | 5441 | if (!HAS_POWER_WELL(dev)) |
Eugeni Dodonov | d0d3e51 | 2012-05-09 15:37:16 -0300 | [diff] [blame] | 5442 | return; |
| 5443 | |
Paulo Zanoni | fa42e23 | 2013-01-25 16:59:11 -0200 | [diff] [blame] | 5444 | /* For now, we need the power well to be always enabled. */ |
| 5445 | intel_set_power_well(dev, true); |
Eugeni Dodonov | d0d3e51 | 2012-05-09 15:37:16 -0300 | [diff] [blame] | 5446 | |
Paulo Zanoni | fa42e23 | 2013-01-25 16:59:11 -0200 | [diff] [blame] | 5447 | /* We're taking over the BIOS, so clear any requests made by it since |
| 5448 | * the driver is in charge now. */ |
Paulo Zanoni | 6aedd1f | 2013-08-02 16:22:25 -0300 | [diff] [blame] | 5449 | if (I915_READ(HSW_PWR_WELL_BIOS) & HSW_PWR_WELL_ENABLE_REQUEST) |
Paulo Zanoni | fa42e23 | 2013-01-25 16:59:11 -0200 | [diff] [blame] | 5450 | I915_WRITE(HSW_PWR_WELL_BIOS, 0); |
Eugeni Dodonov | d0d3e51 | 2012-05-09 15:37:16 -0300 | [diff] [blame] | 5451 | } |
| 5452 | |
Paulo Zanoni | c67a470 | 2013-08-19 13:18:09 -0300 | [diff] [blame] | 5453 | /* Disables PC8 so we can use the GMBUS and DP AUX interrupts. */ |
| 5454 | void intel_aux_display_runtime_get(struct drm_i915_private *dev_priv) |
| 5455 | { |
| 5456 | hsw_disable_package_c8(dev_priv); |
| 5457 | } |
| 5458 | |
| 5459 | void intel_aux_display_runtime_put(struct drm_i915_private *dev_priv) |
| 5460 | { |
| 5461 | hsw_enable_package_c8(dev_priv); |
| 5462 | } |
| 5463 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 5464 | /* Set up chip specific power management-related functions */ |
| 5465 | void intel_init_pm(struct drm_device *dev) |
| 5466 | { |
| 5467 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 5468 | |
| 5469 | if (I915_HAS_FBC(dev)) { |
| 5470 | if (HAS_PCH_SPLIT(dev)) { |
| 5471 | dev_priv->display.fbc_enabled = ironlake_fbc_enabled; |
Rodrigo Vivi | 891348b | 2013-05-06 19:37:36 -0300 | [diff] [blame] | 5472 | if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) |
Rodrigo Vivi | abe959c | 2013-05-06 19:37:33 -0300 | [diff] [blame] | 5473 | dev_priv->display.enable_fbc = |
| 5474 | gen7_enable_fbc; |
| 5475 | else |
| 5476 | dev_priv->display.enable_fbc = |
| 5477 | ironlake_enable_fbc; |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 5478 | dev_priv->display.disable_fbc = ironlake_disable_fbc; |
| 5479 | } else if (IS_GM45(dev)) { |
| 5480 | dev_priv->display.fbc_enabled = g4x_fbc_enabled; |
| 5481 | dev_priv->display.enable_fbc = g4x_enable_fbc; |
| 5482 | dev_priv->display.disable_fbc = g4x_disable_fbc; |
| 5483 | } else if (IS_CRESTLINE(dev)) { |
| 5484 | dev_priv->display.fbc_enabled = i8xx_fbc_enabled; |
| 5485 | dev_priv->display.enable_fbc = i8xx_enable_fbc; |
| 5486 | dev_priv->display.disable_fbc = i8xx_disable_fbc; |
| 5487 | } |
| 5488 | /* 855GM needs testing */ |
| 5489 | } |
| 5490 | |
Daniel Vetter | c921aba | 2012-04-26 23:28:17 +0200 | [diff] [blame] | 5491 | /* For cxsr */ |
| 5492 | if (IS_PINEVIEW(dev)) |
| 5493 | i915_pineview_get_mem_freq(dev); |
| 5494 | else if (IS_GEN5(dev)) |
| 5495 | i915_ironlake_get_mem_freq(dev); |
| 5496 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 5497 | /* For FIFO watermark updates */ |
| 5498 | if (HAS_PCH_SPLIT(dev)) { |
Ville Syrjälä | 53615a5 | 2013-08-01 16:18:50 +0300 | [diff] [blame] | 5499 | intel_setup_wm_latency(dev); |
| 5500 | |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 5501 | if (IS_GEN5(dev)) { |
Ville Syrjälä | 53615a5 | 2013-08-01 16:18:50 +0300 | [diff] [blame] | 5502 | if (dev_priv->wm.pri_latency[1] && |
| 5503 | dev_priv->wm.spr_latency[1] && |
| 5504 | dev_priv->wm.cur_latency[1]) |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 5505 | dev_priv->display.update_wm = ironlake_update_wm; |
| 5506 | else { |
| 5507 | DRM_DEBUG_KMS("Failed to get proper latency. " |
| 5508 | "Disable CxSR\n"); |
| 5509 | dev_priv->display.update_wm = NULL; |
| 5510 | } |
| 5511 | dev_priv->display.init_clock_gating = ironlake_init_clock_gating; |
| 5512 | } else if (IS_GEN6(dev)) { |
Ville Syrjälä | 53615a5 | 2013-08-01 16:18:50 +0300 | [diff] [blame] | 5513 | if (dev_priv->wm.pri_latency[0] && |
| 5514 | dev_priv->wm.spr_latency[0] && |
| 5515 | dev_priv->wm.cur_latency[0]) { |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 5516 | dev_priv->display.update_wm = sandybridge_update_wm; |
| 5517 | dev_priv->display.update_sprite_wm = sandybridge_update_sprite_wm; |
| 5518 | } else { |
| 5519 | DRM_DEBUG_KMS("Failed to read display plane latency. " |
| 5520 | "Disable CxSR\n"); |
| 5521 | dev_priv->display.update_wm = NULL; |
| 5522 | } |
| 5523 | dev_priv->display.init_clock_gating = gen6_init_clock_gating; |
| 5524 | } else if (IS_IVYBRIDGE(dev)) { |
Ville Syrjälä | 53615a5 | 2013-08-01 16:18:50 +0300 | [diff] [blame] | 5525 | if (dev_priv->wm.pri_latency[0] && |
| 5526 | dev_priv->wm.spr_latency[0] && |
| 5527 | dev_priv->wm.cur_latency[0]) { |
Chris Wilson | c43d018 | 2012-12-11 12:01:42 +0000 | [diff] [blame] | 5528 | dev_priv->display.update_wm = ivybridge_update_wm; |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 5529 | dev_priv->display.update_sprite_wm = sandybridge_update_sprite_wm; |
| 5530 | } else { |
| 5531 | DRM_DEBUG_KMS("Failed to read display plane latency. " |
| 5532 | "Disable CxSR\n"); |
| 5533 | dev_priv->display.update_wm = NULL; |
| 5534 | } |
| 5535 | dev_priv->display.init_clock_gating = ivybridge_init_clock_gating; |
Eugeni Dodonov | 6b8a5ee | 2012-05-09 15:37:23 -0300 | [diff] [blame] | 5536 | } else if (IS_HASWELL(dev)) { |
Ville Syrjälä | 53615a5 | 2013-08-01 16:18:50 +0300 | [diff] [blame] | 5537 | if (dev_priv->wm.pri_latency[0] && |
| 5538 | dev_priv->wm.spr_latency[0] && |
| 5539 | dev_priv->wm.cur_latency[0]) { |
Paulo Zanoni | 1011d8c | 2013-05-09 16:55:50 -0300 | [diff] [blame] | 5540 | dev_priv->display.update_wm = haswell_update_wm; |
Paulo Zanoni | 526682e | 2013-05-24 11:59:18 -0300 | [diff] [blame] | 5541 | dev_priv->display.update_sprite_wm = |
| 5542 | haswell_update_sprite_wm; |
Eugeni Dodonov | 6b8a5ee | 2012-05-09 15:37:23 -0300 | [diff] [blame] | 5543 | } else { |
| 5544 | DRM_DEBUG_KMS("Failed to read display plane latency. " |
| 5545 | "Disable CxSR\n"); |
| 5546 | dev_priv->display.update_wm = NULL; |
| 5547 | } |
Eugeni Dodonov | cad2a2d | 2012-07-02 11:51:09 -0300 | [diff] [blame] | 5548 | dev_priv->display.init_clock_gating = haswell_init_clock_gating; |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 5549 | } else |
| 5550 | dev_priv->display.update_wm = NULL; |
| 5551 | } else if (IS_VALLEYVIEW(dev)) { |
| 5552 | dev_priv->display.update_wm = valleyview_update_wm; |
| 5553 | dev_priv->display.init_clock_gating = |
| 5554 | valleyview_init_clock_gating; |
Eugeni Dodonov | 1fa6110 | 2012-04-18 15:29:26 -0300 | [diff] [blame] | 5555 | } else if (IS_PINEVIEW(dev)) { |
| 5556 | if (!intel_get_cxsr_latency(IS_PINEVIEW_G(dev), |
| 5557 | dev_priv->is_ddr3, |
| 5558 | dev_priv->fsb_freq, |
| 5559 | dev_priv->mem_freq)) { |
| 5560 | DRM_INFO("failed to find known CxSR latency " |
| 5561 | "(found ddr%s fsb freq %d, mem freq %d), " |
| 5562 | "disabling CxSR\n", |
| 5563 | (dev_priv->is_ddr3 == 1) ? "3" : "2", |
| 5564 | dev_priv->fsb_freq, dev_priv->mem_freq); |
| 5565 | /* Disable CxSR and never update its watermark again */ |
| 5566 | pineview_disable_cxsr(dev); |
| 5567 | dev_priv->display.update_wm = NULL; |
| 5568 | } else |
| 5569 | dev_priv->display.update_wm = pineview_update_wm; |
| 5570 | dev_priv->display.init_clock_gating = gen3_init_clock_gating; |
| 5571 | } else if (IS_G4X(dev)) { |
| 5572 | dev_priv->display.update_wm = g4x_update_wm; |
| 5573 | dev_priv->display.init_clock_gating = g4x_init_clock_gating; |
| 5574 | } else if (IS_GEN4(dev)) { |
| 5575 | dev_priv->display.update_wm = i965_update_wm; |
| 5576 | if (IS_CRESTLINE(dev)) |
| 5577 | dev_priv->display.init_clock_gating = crestline_init_clock_gating; |
| 5578 | else if (IS_BROADWATER(dev)) |
| 5579 | dev_priv->display.init_clock_gating = broadwater_init_clock_gating; |
| 5580 | } else if (IS_GEN3(dev)) { |
| 5581 | dev_priv->display.update_wm = i9xx_update_wm; |
| 5582 | dev_priv->display.get_fifo_size = i9xx_get_fifo_size; |
| 5583 | dev_priv->display.init_clock_gating = gen3_init_clock_gating; |
| 5584 | } else if (IS_I865G(dev)) { |
| 5585 | dev_priv->display.update_wm = i830_update_wm; |
| 5586 | dev_priv->display.init_clock_gating = i85x_init_clock_gating; |
| 5587 | dev_priv->display.get_fifo_size = i830_get_fifo_size; |
| 5588 | } else if (IS_I85X(dev)) { |
| 5589 | dev_priv->display.update_wm = i9xx_update_wm; |
| 5590 | dev_priv->display.get_fifo_size = i85x_get_fifo_size; |
| 5591 | dev_priv->display.init_clock_gating = i85x_init_clock_gating; |
| 5592 | } else { |
| 5593 | dev_priv->display.update_wm = i830_update_wm; |
| 5594 | dev_priv->display.init_clock_gating = i830_init_clock_gating; |
| 5595 | if (IS_845G(dev)) |
| 5596 | dev_priv->display.get_fifo_size = i845_get_fifo_size; |
| 5597 | else |
| 5598 | dev_priv->display.get_fifo_size = i830_get_fifo_size; |
| 5599 | } |
| 5600 | } |
| 5601 | |
Ben Widawsky | 42c0526 | 2012-09-26 10:34:00 -0700 | [diff] [blame] | 5602 | int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u8 mbox, u32 *val) |
| 5603 | { |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame] | 5604 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
Ben Widawsky | 42c0526 | 2012-09-26 10:34:00 -0700 | [diff] [blame] | 5605 | |
| 5606 | if (I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) { |
| 5607 | DRM_DEBUG_DRIVER("warning: pcode (read) mailbox access failed\n"); |
| 5608 | return -EAGAIN; |
| 5609 | } |
| 5610 | |
| 5611 | I915_WRITE(GEN6_PCODE_DATA, *val); |
| 5612 | I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox); |
| 5613 | |
| 5614 | if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0, |
| 5615 | 500)) { |
| 5616 | DRM_ERROR("timeout waiting for pcode read (%d) to finish\n", mbox); |
| 5617 | return -ETIMEDOUT; |
| 5618 | } |
| 5619 | |
| 5620 | *val = I915_READ(GEN6_PCODE_DATA); |
| 5621 | I915_WRITE(GEN6_PCODE_DATA, 0); |
| 5622 | |
| 5623 | return 0; |
| 5624 | } |
| 5625 | |
| 5626 | int sandybridge_pcode_write(struct drm_i915_private *dev_priv, u8 mbox, u32 val) |
| 5627 | { |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame] | 5628 | WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); |
Ben Widawsky | 42c0526 | 2012-09-26 10:34:00 -0700 | [diff] [blame] | 5629 | |
| 5630 | if (I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) { |
| 5631 | DRM_DEBUG_DRIVER("warning: pcode (write) mailbox access failed\n"); |
| 5632 | return -EAGAIN; |
| 5633 | } |
| 5634 | |
| 5635 | I915_WRITE(GEN6_PCODE_DATA, val); |
| 5636 | I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox); |
| 5637 | |
| 5638 | if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0, |
| 5639 | 500)) { |
| 5640 | DRM_ERROR("timeout waiting for pcode write (%d) to finish\n", mbox); |
| 5641 | return -ETIMEDOUT; |
| 5642 | } |
| 5643 | |
| 5644 | I915_WRITE(GEN6_PCODE_DATA, 0); |
| 5645 | |
| 5646 | return 0; |
| 5647 | } |
Jesse Barnes | a0e4e19 | 2013-04-02 11:23:05 -0700 | [diff] [blame] | 5648 | |
Jesse Barnes | 855ba3b | 2013-04-17 15:54:57 -0700 | [diff] [blame] | 5649 | int vlv_gpu_freq(int ddr_freq, int val) |
| 5650 | { |
| 5651 | int mult, base; |
| 5652 | |
| 5653 | switch (ddr_freq) { |
| 5654 | case 800: |
| 5655 | mult = 20; |
| 5656 | base = 120; |
| 5657 | break; |
| 5658 | case 1066: |
| 5659 | mult = 22; |
| 5660 | base = 133; |
| 5661 | break; |
| 5662 | case 1333: |
| 5663 | mult = 21; |
| 5664 | base = 125; |
| 5665 | break; |
| 5666 | default: |
| 5667 | return -1; |
| 5668 | } |
| 5669 | |
| 5670 | return ((val - 0xbd) * mult) + base; |
| 5671 | } |
| 5672 | |
| 5673 | int vlv_freq_opcode(int ddr_freq, int val) |
| 5674 | { |
| 5675 | int mult, base; |
| 5676 | |
| 5677 | switch (ddr_freq) { |
| 5678 | case 800: |
| 5679 | mult = 20; |
| 5680 | base = 120; |
| 5681 | break; |
| 5682 | case 1066: |
| 5683 | mult = 22; |
| 5684 | base = 133; |
| 5685 | break; |
| 5686 | case 1333: |
| 5687 | mult = 21; |
| 5688 | base = 125; |
| 5689 | break; |
| 5690 | default: |
| 5691 | return -1; |
| 5692 | } |
| 5693 | |
| 5694 | val /= mult; |
| 5695 | val -= base / mult; |
| 5696 | val += 0xbd; |
| 5697 | |
| 5698 | if (val > 0xea) |
| 5699 | val = 0xea; |
| 5700 | |
| 5701 | return val; |
| 5702 | } |
| 5703 | |
Chris Wilson | 907b28c | 2013-07-19 20:36:52 +0100 | [diff] [blame] | 5704 | void intel_pm_init(struct drm_device *dev) |
| 5705 | { |
| 5706 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 5707 | |
| 5708 | INIT_DELAYED_WORK(&dev_priv->rps.delayed_resume_work, |
| 5709 | intel_gen6_powersave_work); |
| 5710 | } |
| 5711 | |