* [PATCH 2/2] drm/i915: add power monitoring support
2010-05-20 21:27 [PATCH 1/2] IPS driver: add GPU busy and turbo checking Jesse Barnes
@ 2010-05-20 21:28 ` Jesse Barnes
2010-05-22 6:55 ` Kenneth Graunke
0 siblings, 1 reply; 3+ messages in thread
From: Jesse Barnes @ 2010-05-20 21:28 UTC (permalink / raw)
To: intel-gfx, Matthew Garrett, eric
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 <jbarnes@virtuousgeek.org>
---
drivers/gpu/drm/i915/i915_debugfs.c | 56 ++++-
drivers/gpu/drm/i915/i915_dma.c | 529 +++++++++++++++++++++++++++++++++-
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, 768 insertions(+), 53 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 322070c..0445f81 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -489,11 +489,14 @@ 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;
}
@@ -508,7 +511,8 @@ 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;
@@ -541,6 +545,8 @@ 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");
@@ -555,9 +561,13 @@ 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;
}
@@ -621,6 +631,36 @@ 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)
@@ -743,6 +783,8 @@ 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 851a2f8..db49511 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1539,14 +1539,11 @@ 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) {
@@ -1577,6 +1574,515 @@ 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;
+ }
+ }
+
+ ret = ((m * (diff / diff1)) + c) / 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... */
+ dev_priv->gfx_power = (diff * 1181) / (diffms * 10);
+}
+
+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
@@ -1691,7 +2197,10 @@ 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
@@ -1738,6 +2247,12 @@ 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:
@@ -1759,6 +2274,10 @@ 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 7f797ef..072da96 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -644,6 +644,18 @@ 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;
@@ -821,6 +833,11 @@ 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);
@@ -1015,7 +1032,7 @@ 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);
@@ -1039,6 +1056,7 @@ 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 a7e4b1f..e27a439 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -279,10 +279,9 @@ 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);
@@ -301,27 +300,8 @@ 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;
}
@@ -389,7 +369,7 @@ 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 f3e39cc..baf9376 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -826,6 +826,12 @@
#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
@@ -964,6 +970,41 @@
#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 e775ce6..2123896 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4436,6 +4436,8 @@ 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);
@@ -5022,10 +5024,32 @@ 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;
@@ -5044,13 +5068,21 @@ 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);
/*
@@ -5072,20 +5104,19 @@ 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);
@@ -5095,11 +5126,7 @@ 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);
@@ -5107,6 +5134,92 @@ 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<<post) * pre));
+
+ return freq;
+}
+
+void intel_init_emon(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->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;
@@ -5353,8 +5466,10 @@ 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,
--
1.7.0.1
^ permalink raw reply related [flat|nested] 3+ messages in thread