From 7648fa99eb77a2e1a90b7beaa420e07d819b9c11 Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Thu, 20 May 2010 14:28:11 -0700 Subject: [PATCH] drm/i915: add power monitoring support Add power monitoring support to the i915 driver for use by the IPS driver. Export the available power info to the IPS driver through a few new inter-driver hooks. When used together, the IPS driver and this patch can significantly increase graphics performance on Ironlake class chips. Signed-off-by: Jesse Barnes [anholt: Fixed 32-bit compile. stupid obfuscating div_u64()] Signed-off-by: Eric Anholt --- drivers/gpu/drm/i915/i915_debugfs.c | 56 ++- drivers/gpu/drm/i915/i915_dma.c | 533 ++++++++++++++++++++++++++- drivers/gpu/drm/i915/i915_drv.h | 20 +- drivers/gpu/drm/i915/i915_irq.c | 28 +- drivers/gpu/drm/i915/i915_reg.h | 41 +++ drivers/gpu/drm/i915/intel_display.c | 147 +++++++- 6 files changed, 772 insertions(+), 53 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index c864858d5064..eb11e1e049cb 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -491,11 +491,14 @@ static int i915_cur_delayinfo(struct seq_file *m, void *unused) struct drm_device *dev = node->minor->dev; drm_i915_private_t *dev_priv = dev->dev_private; u16 rgvswctl = I915_READ16(MEMSWCTL); + u16 rgvstat = I915_READ16(MEMSTAT_ILK); - seq_printf(m, "Last command: 0x%01x\n", (rgvswctl >> 13) & 0x3); - seq_printf(m, "Command status: %d\n", (rgvswctl >> 12) & 1); - seq_printf(m, "P%d DELAY 0x%02x\n", (rgvswctl >> 8) & 0xf, - rgvswctl & 0x3f); + seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf); + seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f); + seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >> + MEMSTAT_VID_SHIFT); + seq_printf(m, "Current P-state: %d\n", + (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT); return 0; } @@ -510,7 +513,8 @@ static int i915_delayfreq_table(struct seq_file *m, void *unused) for (i = 0; i < 16; i++) { delayfreq = I915_READ(PXVFREQ_BASE + i * 4); - seq_printf(m, "P%02dVIDFREQ: 0x%08x\n", i, delayfreq); + seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq, + (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT); } return 0; @@ -543,6 +547,8 @@ static int i915_drpc_info(struct seq_file *m, void *unused) struct drm_device *dev = node->minor->dev; drm_i915_private_t *dev_priv = dev->dev_private; u32 rgvmodectl = I915_READ(MEMMODECTL); + u32 rstdbyctl = I915_READ(MCHBAR_RENDER_STANDBY); + u16 crstandvid = I915_READ16(CRSTANDVID); seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ? "yes" : "no"); @@ -557,9 +563,13 @@ static int i915_drpc_info(struct seq_file *m, void *unused) rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no"); seq_printf(m, "Starting frequency: P%d\n", (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT); - seq_printf(m, "Max frequency: P%d\n", + seq_printf(m, "Max P-state: P%d\n", (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT); - seq_printf(m, "Min frequency: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK)); + seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK)); + seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f)); + seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f)); + seq_printf(m, "Render standby enabled: %s\n", + (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes"); return 0; } @@ -623,6 +633,36 @@ static int i915_sr_status(struct seq_file *m, void *unused) return 0; } +static int i915_emon_status(struct seq_file *m, void *unused) +{ + struct drm_info_node *node = (struct drm_info_node *) m->private; + struct drm_device *dev = node->minor->dev; + drm_i915_private_t *dev_priv = dev->dev_private; + unsigned long temp, chipset, gfx; + + temp = i915_mch_val(dev_priv); + chipset = i915_chipset_val(dev_priv); + gfx = i915_gfx_val(dev_priv); + + seq_printf(m, "GMCH temp: %ld\n", temp); + seq_printf(m, "Chipset power: %ld\n", chipset); + seq_printf(m, "GFX power: %ld\n", gfx); + seq_printf(m, "Total power: %ld\n", chipset + gfx); + + return 0; +} + +static int i915_gfxec(struct seq_file *m, void *unused) +{ + struct drm_info_node *node = (struct drm_info_node *) m->private; + struct drm_device *dev = node->minor->dev; + drm_i915_private_t *dev_priv = dev->dev_private; + + seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4)); + + return 0; +} + static int i915_wedged_open(struct inode *inode, struct file *filp) @@ -745,6 +785,8 @@ static struct drm_info_list i915_debugfs_list[] = { {"i915_delayfreq_table", i915_delayfreq_table, 0}, {"i915_inttoext_table", i915_inttoext_table, 0}, {"i915_drpc_info", i915_drpc_info, 0}, + {"i915_emon_status", i915_emon_status, 0}, + {"i915_gfxec", i915_gfxec, 0}, {"i915_fbc_status", i915_fbc_status, 0}, {"i915_sr_status", i915_sr_status, 0}, }; diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 1dbed700800e..12e92f2cc3a7 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -1458,14 +1458,11 @@ void i915_master_destroy(struct drm_device *dev, struct drm_master *master) master->driver_priv = NULL; } -static void i915_get_mem_freq(struct drm_device *dev) +static void i915_pineview_get_mem_freq(struct drm_device *dev) { drm_i915_private_t *dev_priv = dev->dev_private; u32 tmp; - if (!IS_PINEVIEW(dev)) - return; - tmp = I915_READ(CLKCFG); switch (tmp & CLKCFG_FSB_MASK) { @@ -1496,6 +1493,519 @@ static void i915_get_mem_freq(struct drm_device *dev) } } +static void i915_ironlake_get_mem_freq(struct drm_device *dev) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + u16 ddrpll, csipll; + + ddrpll = I915_READ16(DDRMPLL1); + csipll = I915_READ16(CSIPLL0); + + switch (ddrpll & 0xff) { + case 0xc: + dev_priv->mem_freq = 800; + break; + case 0x10: + dev_priv->mem_freq = 1066; + break; + case 0x14: + dev_priv->mem_freq = 1333; + break; + case 0x18: + dev_priv->mem_freq = 1600; + break; + default: + DRM_DEBUG_DRIVER("unknown memory frequency 0x%02x\n", + ddrpll & 0xff); + dev_priv->mem_freq = 0; + break; + } + + dev_priv->r_t = dev_priv->mem_freq; + + switch (csipll & 0x3ff) { + case 0x00c: + dev_priv->fsb_freq = 3200; + break; + case 0x00e: + dev_priv->fsb_freq = 3733; + break; + case 0x010: + dev_priv->fsb_freq = 4266; + break; + case 0x012: + dev_priv->fsb_freq = 4800; + break; + case 0x014: + dev_priv->fsb_freq = 5333; + break; + case 0x016: + dev_priv->fsb_freq = 5866; + break; + case 0x018: + dev_priv->fsb_freq = 6400; + break; + default: + DRM_DEBUG_DRIVER("unknown fsb frequency 0x%04x\n", + csipll & 0x3ff); + dev_priv->fsb_freq = 0; + break; + } + + if (dev_priv->fsb_freq == 3200) { + dev_priv->c_m = 0; + } else if (dev_priv->fsb_freq > 3200 && dev_priv->fsb_freq <= 4800) { + dev_priv->c_m = 1; + } else { + dev_priv->c_m = 2; + } +} + +struct v_table { + u8 vid; + unsigned long vd; /* in .1 mil */ + unsigned long vm; /* in .1 mil */ + u8 pvid; +}; + +static struct v_table v_table[] = { + { 0, 16125, 15000, 0x7f, }, + { 1, 16000, 14875, 0x7e, }, + { 2, 15875, 14750, 0x7d, }, + { 3, 15750, 14625, 0x7c, }, + { 4, 15625, 14500, 0x7b, }, + { 5, 15500, 14375, 0x7a, }, + { 6, 15375, 14250, 0x79, }, + { 7, 15250, 14125, 0x78, }, + { 8, 15125, 14000, 0x77, }, + { 9, 15000, 13875, 0x76, }, + { 10, 14875, 13750, 0x75, }, + { 11, 14750, 13625, 0x74, }, + { 12, 14625, 13500, 0x73, }, + { 13, 14500, 13375, 0x72, }, + { 14, 14375, 13250, 0x71, }, + { 15, 14250, 13125, 0x70, }, + { 16, 14125, 13000, 0x6f, }, + { 17, 14000, 12875, 0x6e, }, + { 18, 13875, 12750, 0x6d, }, + { 19, 13750, 12625, 0x6c, }, + { 20, 13625, 12500, 0x6b, }, + { 21, 13500, 12375, 0x6a, }, + { 22, 13375, 12250, 0x69, }, + { 23, 13250, 12125, 0x68, }, + { 24, 13125, 12000, 0x67, }, + { 25, 13000, 11875, 0x66, }, + { 26, 12875, 11750, 0x65, }, + { 27, 12750, 11625, 0x64, }, + { 28, 12625, 11500, 0x63, }, + { 29, 12500, 11375, 0x62, }, + { 30, 12375, 11250, 0x61, }, + { 31, 12250, 11125, 0x60, }, + { 32, 12125, 11000, 0x5f, }, + { 33, 12000, 10875, 0x5e, }, + { 34, 11875, 10750, 0x5d, }, + { 35, 11750, 10625, 0x5c, }, + { 36, 11625, 10500, 0x5b, }, + { 37, 11500, 10375, 0x5a, }, + { 38, 11375, 10250, 0x59, }, + { 39, 11250, 10125, 0x58, }, + { 40, 11125, 10000, 0x57, }, + { 41, 11000, 9875, 0x56, }, + { 42, 10875, 9750, 0x55, }, + { 43, 10750, 9625, 0x54, }, + { 44, 10625, 9500, 0x53, }, + { 45, 10500, 9375, 0x52, }, + { 46, 10375, 9250, 0x51, }, + { 47, 10250, 9125, 0x50, }, + { 48, 10125, 9000, 0x4f, }, + { 49, 10000, 8875, 0x4e, }, + { 50, 9875, 8750, 0x4d, }, + { 51, 9750, 8625, 0x4c, }, + { 52, 9625, 8500, 0x4b, }, + { 53, 9500, 8375, 0x4a, }, + { 54, 9375, 8250, 0x49, }, + { 55, 9250, 8125, 0x48, }, + { 56, 9125, 8000, 0x47, }, + { 57, 9000, 7875, 0x46, }, + { 58, 8875, 7750, 0x45, }, + { 59, 8750, 7625, 0x44, }, + { 60, 8625, 7500, 0x43, }, + { 61, 8500, 7375, 0x42, }, + { 62, 8375, 7250, 0x41, }, + { 63, 8250, 7125, 0x40, }, + { 64, 8125, 7000, 0x3f, }, + { 65, 8000, 6875, 0x3e, }, + { 66, 7875, 6750, 0x3d, }, + { 67, 7750, 6625, 0x3c, }, + { 68, 7625, 6500, 0x3b, }, + { 69, 7500, 6375, 0x3a, }, + { 70, 7375, 6250, 0x39, }, + { 71, 7250, 6125, 0x38, }, + { 72, 7125, 6000, 0x37, }, + { 73, 7000, 5875, 0x36, }, + { 74, 6875, 5750, 0x35, }, + { 75, 6750, 5625, 0x34, }, + { 76, 6625, 5500, 0x33, }, + { 77, 6500, 5375, 0x32, }, + { 78, 6375, 5250, 0x31, }, + { 79, 6250, 5125, 0x30, }, + { 80, 6125, 5000, 0x2f, }, + { 81, 6000, 4875, 0x2e, }, + { 82, 5875, 4750, 0x2d, }, + { 83, 5750, 4625, 0x2c, }, + { 84, 5625, 4500, 0x2b, }, + { 85, 5500, 4375, 0x2a, }, + { 86, 5375, 4250, 0x29, }, + { 87, 5250, 4125, 0x28, }, + { 88, 5125, 4000, 0x27, }, + { 89, 5000, 3875, 0x26, }, + { 90, 4875, 3750, 0x25, }, + { 91, 4750, 3625, 0x24, }, + { 92, 4625, 3500, 0x23, }, + { 93, 4500, 3375, 0x22, }, + { 94, 4375, 3250, 0x21, }, + { 95, 4250, 3125, 0x20, }, + { 96, 4125, 3000, 0x1f, }, + { 97, 4125, 3000, 0x1e, }, + { 98, 4125, 3000, 0x1d, }, + { 99, 4125, 3000, 0x1c, }, + { 100, 4125, 3000, 0x1b, }, + { 101, 4125, 3000, 0x1a, }, + { 102, 4125, 3000, 0x19, }, + { 103, 4125, 3000, 0x18, }, + { 104, 4125, 3000, 0x17, }, + { 105, 4125, 3000, 0x16, }, + { 106, 4125, 3000, 0x15, }, + { 107, 4125, 3000, 0x14, }, + { 108, 4125, 3000, 0x13, }, + { 109, 4125, 3000, 0x12, }, + { 110, 4125, 3000, 0x11, }, + { 111, 4125, 3000, 0x10, }, + { 112, 4125, 3000, 0x0f, }, + { 113, 4125, 3000, 0x0e, }, + { 114, 4125, 3000, 0x0d, }, + { 115, 4125, 3000, 0x0c, }, + { 116, 4125, 3000, 0x0b, }, + { 117, 4125, 3000, 0x0a, }, + { 118, 4125, 3000, 0x09, }, + { 119, 4125, 3000, 0x08, }, + { 120, 1125, 0, 0x07, }, + { 121, 1000, 0, 0x06, }, + { 122, 875, 0, 0x05, }, + { 123, 750, 0, 0x04, }, + { 124, 625, 0, 0x03, }, + { 125, 500, 0, 0x02, }, + { 126, 375, 0, 0x01, }, + { 127, 0, 0, 0x00, }, +}; + +struct cparams { + int i; + int t; + int m; + int c; +}; + +static struct cparams cparams[] = { + { 1, 1333, 301, 28664 }, + { 1, 1066, 294, 24460 }, + { 1, 800, 294, 25192 }, + { 0, 1333, 276, 27605 }, + { 0, 1066, 276, 27605 }, + { 0, 800, 231, 23784 }, +}; + +unsigned long i915_chipset_val(struct drm_i915_private *dev_priv) +{ + u64 total_count, diff, ret; + u32 count1, count2, count3, m = 0, c = 0; + unsigned long now = jiffies_to_msecs(jiffies), diff1; + int i; + + diff1 = now - dev_priv->last_time1; + + count1 = I915_READ(DMIEC); + count2 = I915_READ(DDREC); + count3 = I915_READ(CSIEC); + + total_count = count1 + count2 + count3; + + /* FIXME: handle per-counter overflow */ + if (total_count < dev_priv->last_count1) { + diff = ~0UL - dev_priv->last_count1; + diff += total_count; + } else { + diff = total_count - dev_priv->last_count1; + } + + for (i = 0; i < ARRAY_SIZE(cparams); i++) { + if (cparams[i].i == dev_priv->c_m && + cparams[i].t == dev_priv->r_t) { + m = cparams[i].m; + c = cparams[i].c; + break; + } + } + + div_u64(diff, diff1); + ret = ((m * diff) + c); + div_u64(ret, 10); + + dev_priv->last_count1 = total_count; + dev_priv->last_time1 = now; + + return ret; +} + +unsigned long i915_mch_val(struct drm_i915_private *dev_priv) +{ + unsigned long m, x, b; + u32 tsfs; + + tsfs = I915_READ(TSFS); + + m = ((tsfs & TSFS_SLOPE_MASK) >> TSFS_SLOPE_SHIFT); + x = I915_READ8(TR1); + + b = tsfs & TSFS_INTR_MASK; + + return ((m * x) / 127) - b; +} + +static unsigned long pvid_to_extvid(struct drm_i915_private *dev_priv, u8 pxvid) +{ + unsigned long val = 0; + int i; + + for (i = 0; i < ARRAY_SIZE(v_table); i++) { + if (v_table[i].pvid == pxvid) { + if (IS_MOBILE(dev_priv->dev)) + val = v_table[i].vm; + else + val = v_table[i].vd; + } + } + + return val; +} + +void i915_update_gfx_val(struct drm_i915_private *dev_priv) +{ + struct timespec now, diff1; + u64 diff; + unsigned long diffms; + u32 count; + + getrawmonotonic(&now); + diff1 = timespec_sub(now, dev_priv->last_time2); + + /* Don't divide by 0 */ + diffms = diff1.tv_sec * 1000 + diff1.tv_nsec / 1000000; + if (!diffms) + return; + + count = I915_READ(GFXEC); + + if (count < dev_priv->last_count2) { + diff = ~0UL - dev_priv->last_count2; + diff += count; + } else { + diff = count - dev_priv->last_count2; + } + + dev_priv->last_count2 = count; + dev_priv->last_time2 = now; + + /* More magic constants... */ + diff = diff * 1181; + div_u64(diff, diffms * 10); + dev_priv->gfx_power = diff; +} + +unsigned long i915_gfx_val(struct drm_i915_private *dev_priv) +{ + unsigned long t, corr, state1, corr2, state2; + u32 pxvid, ext_v; + + pxvid = I915_READ(PXVFREQ_BASE + (dev_priv->cur_delay * 4)); + pxvid = (pxvid >> 24) & 0x7f; + ext_v = pvid_to_extvid(dev_priv, pxvid); + + state1 = ext_v; + + t = i915_mch_val(dev_priv); + + /* Revel in the empirically derived constants */ + + /* Correction factor in 1/100000 units */ + if (t > 80) + corr = ((t * 2349) + 135940); + else if (t >= 50) + corr = ((t * 964) + 29317); + else /* < 50 */ + corr = ((t * 301) + 1004); + + corr = corr * ((150142 * state1) / 10000 - 78642); + corr /= 100000; + corr2 = (corr * dev_priv->corr); + + state2 = (corr2 * state1) / 10000; + state2 /= 100; /* convert to mW */ + + i915_update_gfx_val(dev_priv); + + return dev_priv->gfx_power + state2; +} + +/* Global for IPS driver to get at the current i915 device */ +static struct drm_i915_private *i915_mch_dev; +/* + * Lock protecting IPS related data structures + * - i915_mch_dev + * - dev_priv->max_delay + * - dev_priv->min_delay + * - dev_priv->fmax + * - dev_priv->gpu_busy + */ +DEFINE_SPINLOCK(mchdev_lock); + +/** + * i915_read_mch_val - return value for IPS use + * + * Calculate and return a value for the IPS driver to use when deciding whether + * we have thermal and power headroom to increase CPU or GPU power budget. + */ +unsigned long i915_read_mch_val(void) +{ + struct drm_i915_private *dev_priv; + unsigned long chipset_val, graphics_val, ret = 0; + + spin_lock(&mchdev_lock); + if (!i915_mch_dev) + goto out_unlock; + dev_priv = i915_mch_dev; + + chipset_val = i915_chipset_val(dev_priv); + graphics_val = i915_gfx_val(dev_priv); + + ret = chipset_val + graphics_val; + +out_unlock: + spin_unlock(&mchdev_lock); + + return ret; +} +EXPORT_SYMBOL_GPL(i915_read_mch_val); + +/** + * i915_gpu_raise - raise GPU frequency limit + * + * Raise the limit; IPS indicates we have thermal headroom. + */ +bool i915_gpu_raise(void) +{ + struct drm_i915_private *dev_priv; + bool ret = true; + + spin_lock(&mchdev_lock); + if (!i915_mch_dev) { + ret = false; + goto out_unlock; + } + dev_priv = i915_mch_dev; + + if (dev_priv->max_delay > dev_priv->fmax) + dev_priv->max_delay--; + +out_unlock: + spin_unlock(&mchdev_lock); + + return ret; +} +EXPORT_SYMBOL_GPL(i915_gpu_raise); + +/** + * i915_gpu_lower - lower GPU frequency limit + * + * IPS indicates we're close to a thermal limit, so throttle back the GPU + * frequency maximum. + */ +bool i915_gpu_lower(void) +{ + struct drm_i915_private *dev_priv; + bool ret = true; + + spin_lock(&mchdev_lock); + if (!i915_mch_dev) { + ret = false; + goto out_unlock; + } + dev_priv = i915_mch_dev; + + if (dev_priv->max_delay < dev_priv->min_delay) + dev_priv->max_delay++; + +out_unlock: + spin_unlock(&mchdev_lock); + + return ret; +} +EXPORT_SYMBOL_GPL(i915_gpu_lower); + +/** + * i915_gpu_busy - indicate GPU business to IPS + * + * Tell the IPS driver whether or not the GPU is busy. + */ +bool i915_gpu_busy(void) +{ + struct drm_i915_private *dev_priv; + bool ret = false; + + spin_lock(&mchdev_lock); + if (!i915_mch_dev) + goto out_unlock; + dev_priv = i915_mch_dev; + + ret = dev_priv->busy; + +out_unlock: + spin_unlock(&mchdev_lock); + + return ret; +} +EXPORT_SYMBOL_GPL(i915_gpu_busy); + +/** + * i915_gpu_turbo_disable - disable graphics turbo + * + * Disable graphics turbo by resetting the max frequency and setting the + * current frequency to the default. + */ +bool i915_gpu_turbo_disable(void) +{ + struct drm_i915_private *dev_priv; + bool ret = true; + + spin_lock(&mchdev_lock); + if (!i915_mch_dev) { + ret = false; + goto out_unlock; + } + dev_priv = i915_mch_dev; + + dev_priv->max_delay = dev_priv->fstart; + + if (!ironlake_set_drps(dev_priv->dev, dev_priv->fstart)) + ret = false; + +out_unlock: + spin_unlock(&mchdev_lock); + + return ret; +} +EXPORT_SYMBOL_GPL(i915_gpu_turbo_disable); + /** * i915_driver_load - setup chip and create an initial config * @dev: DRM device @@ -1616,7 +2126,10 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) goto out_workqueue_free; } - i915_get_mem_freq(dev); + if (IS_PINEVIEW(dev)) + i915_pineview_get_mem_freq(dev); + else if (IS_IRONLAKE(dev)) + i915_ironlake_get_mem_freq(dev); /* On the 945G/GM, the chipset reports the MSI capability on the * integrated graphics even though the support isn't actually there @@ -1662,6 +2175,12 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) setup_timer(&dev_priv->hangcheck_timer, i915_hangcheck_elapsed, (unsigned long) dev); + + spin_lock(&mchdev_lock); + i915_mch_dev = dev_priv; + dev_priv->mchdev_lock = &mchdev_lock; + spin_unlock(&mchdev_lock); + return 0; out_workqueue_free: @@ -1683,6 +2202,10 @@ int i915_driver_unload(struct drm_device *dev) i915_destroy_error_state(dev); + spin_lock(&mchdev_lock); + i915_mch_dev = NULL; + spin_unlock(&mchdev_lock); + destroy_workqueue(dev_priv->wq); del_timer_sync(&dev_priv->hangcheck_timer); diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 6bc0fc080f2b..91b3a1c20ef8 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -619,6 +619,18 @@ typedef struct drm_i915_private { u8 cur_delay; u8 min_delay; u8 max_delay; + u8 fmax; + u8 fstart; + + u64 last_count1; + unsigned long last_time1; + u64 last_count2; + struct timespec last_time2; + unsigned long gfx_power; + int c_m; + int r_t; + u8 corr; + spinlock_t *mchdev_lock; enum no_fbc_reason no_fbc_reason; @@ -802,6 +814,11 @@ extern int i915_emit_box(struct drm_device *dev, struct drm_clip_rect *boxes, int i, int DR1, int DR4); extern int i965_reset(struct drm_device *dev, u8 flags); +extern unsigned long i915_chipset_val(struct drm_i915_private *dev_priv); +extern unsigned long i915_mch_val(struct drm_i915_private *dev_priv); +extern unsigned long i915_gfx_val(struct drm_i915_private *dev_priv); +extern void i915_update_gfx_val(struct drm_i915_private *dev_priv); + /* i915_irq.c */ void i915_hangcheck_elapsed(unsigned long data); @@ -1005,7 +1022,7 @@ extern void g4x_disable_fbc(struct drm_device *dev); extern void intel_disable_fbc(struct drm_device *dev); extern void intel_enable_fbc(struct drm_crtc *crtc, unsigned long interval); extern bool intel_fbc_enabled(struct drm_device *dev); - +extern bool ironlake_set_drps(struct drm_device *dev, u8 val); extern void intel_detect_pch (struct drm_device *dev); extern int intel_trans_dp_port_sel (struct drm_crtc *crtc); @@ -1030,6 +1047,7 @@ extern int intel_trans_dp_port_sel (struct drm_crtc *crtc); #define I915_WRITE64(reg, val) writeq(val, dev_priv->regs + (reg)) #define I915_READ64(reg) readq(dev_priv->regs + (reg)) #define POSTING_READ(reg) (void)I915_READ(reg) +#define POSTING_READ16(reg) (void)I915_READ16(reg) #define I915_VERBOSE 0 diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 0a3a5806a12e..b5dba4795f6f 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -278,10 +278,9 @@ static void i915_handle_rps_change(struct drm_device *dev) { drm_i915_private_t *dev_priv = dev->dev_private; u32 busy_up, busy_down, max_avg, min_avg; - u16 rgvswctl; u8 new_delay = dev_priv->cur_delay; - I915_WRITE(MEMINTRSTS, I915_READ(MEMINTRSTS) & ~MEMINT_EVAL_CHG); + I915_WRITE16(MEMINTRSTS, MEMINT_EVAL_CHG); busy_up = I915_READ(RCPREVBSYTUPAVG); busy_down = I915_READ(RCPREVBSYTDNAVG); max_avg = I915_READ(RCBMAXAVG); @@ -300,27 +299,8 @@ static void i915_handle_rps_change(struct drm_device *dev) new_delay = dev_priv->min_delay; } - DRM_DEBUG("rps change requested: %d -> %d\n", - dev_priv->cur_delay, new_delay); - - rgvswctl = I915_READ(MEMSWCTL); - if (rgvswctl & MEMCTL_CMD_STS) { - DRM_ERROR("gpu busy, RCS change rejected\n"); - return; /* still busy with another command */ - } - - /* Program the new state */ - rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) | - (new_delay << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM; - I915_WRITE(MEMSWCTL, rgvswctl); - POSTING_READ(MEMSWCTL); - - rgvswctl |= MEMCTL_CMD_STS; - I915_WRITE(MEMSWCTL, rgvswctl); - - dev_priv->cur_delay = new_delay; - - DRM_DEBUG("rps changed\n"); + if (ironlake_set_drps(dev, new_delay)) + dev_priv->cur_delay = new_delay; return; } @@ -392,7 +372,7 @@ irqreturn_t ironlake_irq_handler(struct drm_device *dev) } if (de_iir & DE_PCU_EVENT) { - I915_WRITE(MEMINTRSTS, I915_READ(MEMINTRSTS)); + I915_WRITE16(MEMINTRSTS, I915_READ(MEMINTRSTS)); i915_handle_rps_change(dev); } diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 7a726840efa7..df7224de0aed 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -838,6 +838,12 @@ #define CLKCFG_MEM_800 (3 << 4) #define CLKCFG_MEM_MASK (7 << 4) +#define TR1 0x11006 +#define TSFS 0x11020 +#define TSFS_SLOPE_MASK 0x0000ff00 +#define TSFS_SLOPE_SHIFT 8 +#define TSFS_INTR_MASK 0x000000ff + #define CRSTANDVID 0x11100 #define PXVFREQ_BASE 0x11110 /* P[0-15]VIDFREQ (0x1114c) (Ironlake) */ #define PXVFREQ_PX_MASK 0x7f000000 @@ -976,6 +982,41 @@ #define MEMSTAT_SRC_CTL_STDBY 3 #define RCPREVBSYTUPAVG 0x113b8 #define RCPREVBSYTDNAVG 0x113bc +#define SDEW 0x1124c +#define CSIEW0 0x11250 +#define CSIEW1 0x11254 +#define CSIEW2 0x11258 +#define PEW 0x1125c +#define DEW 0x11270 +#define MCHAFE 0x112c0 +#define CSIEC 0x112e0 +#define DMIEC 0x112e4 +#define DDREC 0x112e8 +#define PEG0EC 0x112ec +#define PEG1EC 0x112f0 +#define GFXEC 0x112f4 +#define RPPREVBSYTUPAVG 0x113b8 +#define RPPREVBSYTDNAVG 0x113bc +#define ECR 0x11600 +#define ECR_GPFE (1<<31) +#define ECR_IMONE (1<<30) +#define ECR_CAP_MASK 0x0000001f /* Event range, 0-31 */ +#define OGW0 0x11608 +#define OGW1 0x1160c +#define EG0 0x11610 +#define EG1 0x11614 +#define EG2 0x11618 +#define EG3 0x1161c +#define EG4 0x11620 +#define EG5 0x11624 +#define EG6 0x11628 +#define EG7 0x1162c +#define PXW 0x11664 +#define PXWL 0x11680 +#define LCFUSE02 0x116c0 +#define LCFUSE_HIV_MASK 0x000000ff +#define CSIPLL0 0x12c10 +#define DDRMPLL1 0X12c20 #define PEG_BAND_GAP_DATA 0x14d68 /* diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 4c7c151114f7..e94d1db35364 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -4459,6 +4459,8 @@ static void intel_idle_update(struct work_struct *work) mutex_lock(&dev->struct_mutex); + i915_update_gfx_val(dev_priv); + if (IS_I945G(dev) || IS_I945GM(dev)) { DRM_DEBUG_DRIVER("enable memory self refresh on 945\n"); I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN_MASK | FW_BLC_SELF_EN); @@ -5045,10 +5047,32 @@ err_unref: return NULL; } +bool ironlake_set_drps(struct drm_device *dev, u8 val) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + u16 rgvswctl; + + rgvswctl = I915_READ16(MEMSWCTL); + if (rgvswctl & MEMCTL_CMD_STS) { + DRM_DEBUG("gpu busy, RCS change rejected\n"); + return false; /* still busy with another command */ + } + + rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) | + (val << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM; + I915_WRITE16(MEMSWCTL, rgvswctl); + POSTING_READ16(MEMSWCTL); + + rgvswctl |= MEMCTL_CMD_STS; + I915_WRITE16(MEMSWCTL, rgvswctl); + + return true; +} + void ironlake_enable_drps(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; - u32 rgvmodectl = I915_READ(MEMMODECTL), rgvswctl; + u32 rgvmodectl = I915_READ(MEMMODECTL); u8 fmax, fmin, fstart, vstart; int i = 0; @@ -5067,13 +5091,21 @@ void ironlake_enable_drps(struct drm_device *dev) fmin = (rgvmodectl & MEMMODE_FMIN_MASK); fstart = (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT; + fstart = fmax; + vstart = (I915_READ(PXVFREQ_BASE + (fstart * 4)) & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT; - dev_priv->max_delay = fstart; /* can't go to fmax w/o IPS */ + dev_priv->fmax = fstart; /* IPS callback will increase this */ + dev_priv->fstart = fstart; + + dev_priv->max_delay = fmax; dev_priv->min_delay = fmin; dev_priv->cur_delay = fstart; + DRM_DEBUG_DRIVER("fmax: %d, fmin: %d, fstart: %d\n", fmax, fmin, + fstart); + I915_WRITE(MEMINTREN, MEMINT_CX_SUPR_EN | MEMINT_EVAL_CHG_EN); /* @@ -5095,20 +5127,19 @@ void ironlake_enable_drps(struct drm_device *dev) } msleep(1); - rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) | - (fstart << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM; - I915_WRITE(MEMSWCTL, rgvswctl); - POSTING_READ(MEMSWCTL); + ironlake_set_drps(dev, fstart); - rgvswctl |= MEMCTL_CMD_STS; - I915_WRITE(MEMSWCTL, rgvswctl); + dev_priv->last_count1 = I915_READ(0x112e4) + I915_READ(0x112e8) + + I915_READ(0x112e0); + dev_priv->last_time1 = jiffies_to_msecs(jiffies); + dev_priv->last_count2 = I915_READ(0x112f4); + getrawmonotonic(&dev_priv->last_time2); } void ironlake_disable_drps(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; - u32 rgvswctl; - u8 fstart; + u16 rgvswctl = I915_READ16(MEMSWCTL); /* Ack interrupts, disable EFC interrupt */ I915_WRITE(MEMINTREN, I915_READ(MEMINTREN) & ~MEMINT_EVAL_CHG_EN); @@ -5118,11 +5149,7 @@ void ironlake_disable_drps(struct drm_device *dev) I915_WRITE(DEIMR, I915_READ(DEIMR) | DE_PCU_EVENT); /* Go back to the starting frequency */ - fstart = (I915_READ(MEMMODECTL) & MEMMODE_FSTART_MASK) >> - MEMMODE_FSTART_SHIFT; - rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) | - (fstart << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM; - I915_WRITE(MEMSWCTL, rgvswctl); + ironlake_set_drps(dev, dev_priv->fstart); msleep(1); rgvswctl |= MEMCTL_CMD_STS; I915_WRITE(MEMSWCTL, rgvswctl); @@ -5130,6 +5157,92 @@ void ironlake_disable_drps(struct drm_device *dev) } +static unsigned long intel_pxfreq(u32 vidfreq) +{ + unsigned long freq; + int div = (vidfreq & 0x3f0000) >> 16; + int post = (vidfreq & 0x3000) >> 12; + int pre = (vidfreq & 0x7); + + if (!pre) + return 0; + + freq = ((div * 133333) / ((1<dev_private; + u32 lcfuse; + u8 pxw[16]; + int i; + + /* Disable to program */ + I915_WRITE(ECR, 0); + POSTING_READ(ECR); + + /* Program energy weights for various events */ + I915_WRITE(SDEW, 0x15040d00); + I915_WRITE(CSIEW0, 0x007f0000); + I915_WRITE(CSIEW1, 0x1e220004); + I915_WRITE(CSIEW2, 0x04000004); + + for (i = 0; i < 5; i++) + I915_WRITE(PEW + (i * 4), 0); + for (i = 0; i < 3; i++) + I915_WRITE(DEW + (i * 4), 0); + + /* Program P-state weights to account for frequency power adjustment */ + for (i = 0; i < 16; i++) { + u32 pxvidfreq = I915_READ(PXVFREQ_BASE + (i * 4)); + unsigned long freq = intel_pxfreq(pxvidfreq); + unsigned long vid = (pxvidfreq & PXVFREQ_PX_MASK) >> + PXVFREQ_PX_SHIFT; + unsigned long val; + + val = vid * vid; + val *= (freq / 1000); + val *= 255; + val /= (127*127*900); + if (val > 0xff) + DRM_ERROR("bad pxval: %ld\n", val); + pxw[i] = val; + } + /* Render standby states get 0 weight */ + pxw[14] = 0; + pxw[15] = 0; + + for (i = 0; i < 4; i++) { + u32 val = (pxw[i*4] << 24) | (pxw[(i*4)+1] << 16) | + (pxw[(i*4)+2] << 8) | (pxw[(i*4)+3]); + I915_WRITE(PXW + (i * 4), val); + } + + /* Adjust magic regs to magic values (more experimental results) */ + I915_WRITE(OGW0, 0); + I915_WRITE(OGW1, 0); + I915_WRITE(EG0, 0x00007f00); + I915_WRITE(EG1, 0x0000000e); + I915_WRITE(EG2, 0x000e0000); + I915_WRITE(EG3, 0x68000300); + I915_WRITE(EG4, 0x42000000); + I915_WRITE(EG5, 0x00140031); + I915_WRITE(EG6, 0); + I915_WRITE(EG7, 0); + + for (i = 0; i < 8; i++) + I915_WRITE(PXWL + (i * 4), 0); + + /* Enable PMON + select events */ + I915_WRITE(ECR, 0x80000019); + + lcfuse = I915_READ(LCFUSE02); + + dev_priv->corr = (lcfuse & LCFUSE_HIV_MASK); +} + void intel_init_clock_gating(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; @@ -5376,8 +5489,10 @@ void intel_modeset_init(struct drm_device *dev) intel_init_clock_gating(dev); - if (IS_IRONLAKE_M(dev)) + if (IS_IRONLAKE_M(dev)) { ironlake_enable_drps(dev); + intel_init_emon(dev); + } INIT_WORK(&dev_priv->idle_work, intel_idle_update); setup_timer(&dev_priv->idle_timer, intel_gpu_idle_timer, -- 2.20.1