drm/ips: move drps/ips/ilk related variables into dev_priv->ips

Like with the equivalent change for gen6+ rps state, this helps in
clarifying the code (and in fixing a few places that have fallen through
the cracks in the locking review).

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_drv.h

@@ -839,22 +839,26 @@ typedef struct drm_i915_private {
 		u8 max_delay;
 	} rps;
 
-
-	u8 cur_delay;
-	u8 min_delay;
-	u8 max_delay;
-	u8 fmax;
-	u8 fstart;
-
-	u64 last_count1;
-	unsigned long last_time1;
-	unsigned long chipset_power;
-	u64 last_count2;
-	struct timespec last_time2;
-	unsigned long gfx_power;
-	int c_m;
-	int r_t;
-	u8 corr;
+	/* ilk-only ips/rps state. Everything in here is protected by the global
+	 * mchdev_lock in intel_pm.c */
+	struct {
+		u8 cur_delay;
+		u8 min_delay;
+		u8 max_delay;
+		u8 fmax;
+		u8 fstart;
+
+		u64 last_count1;
+		unsigned long last_time1;
+		unsigned long chipset_power;
+		u64 last_count2;
+		struct timespec last_time2;
+		unsigned long gfx_power;
+		u8 corr;
+
+		int c_m;
+		int r_t;
+	} ips;
 
 	enum no_fbc_reason no_fbc_reason;
 

drivers/gpu/drm/i915/i915_irq.c

@@ -310,7 +310,7 @@ static void ironlake_handle_rps_change(struct drm_device *dev)
 
 	I915_WRITE16(MEMINTRSTS, I915_READ(MEMINTRSTS));
 
-	new_delay = dev_priv->cur_delay;
+	new_delay = dev_priv->ips.cur_delay;
 
 	I915_WRITE16(MEMINTRSTS, MEMINT_EVAL_CHG);
 	busy_up = I915_READ(RCPREVBSYTUPAVG);
@@ -320,19 +320,19 @@ static void ironlake_handle_rps_change(struct drm_device *dev)
 
 	/* Handle RCS change request from hw */
 	if (busy_up > max_avg) {
-		if (dev_priv->cur_delay != dev_priv->max_delay)
-			new_delay = dev_priv->cur_delay - 1;
-		if (new_delay < dev_priv->max_delay)
-			new_delay = dev_priv->max_delay;
+		if (dev_priv->ips.cur_delay != dev_priv->ips.max_delay)
+			new_delay = dev_priv->ips.cur_delay - 1;
+		if (new_delay < dev_priv->ips.max_delay)
+			new_delay = dev_priv->ips.max_delay;
 	} else if (busy_down < min_avg) {
-		if (dev_priv->cur_delay != dev_priv->min_delay)
-			new_delay = dev_priv->cur_delay + 1;
-		if (new_delay > dev_priv->min_delay)
-			new_delay = dev_priv->min_delay;
+		if (dev_priv->ips.cur_delay != dev_priv->ips.min_delay)
+			new_delay = dev_priv->ips.cur_delay + 1;
+		if (new_delay > dev_priv->ips.min_delay)
+			new_delay = dev_priv->ips.min_delay;
 	}
 
 	if (ironlake_set_drps(dev, new_delay))
-		dev_priv->cur_delay = new_delay;
+		dev_priv->ips.cur_delay = new_delay;
 
 	spin_unlock_irqrestore(&mchdev_lock, flags);
 

drivers/gpu/drm/i915/intel_pm.c

@@ -593,7 +593,7 @@ static void i915_ironlake_get_mem_freq(struct drm_device *dev)
 		break;
 	}
 
-	dev_priv->r_t = dev_priv->mem_freq;
+	dev_priv->ips.r_t = dev_priv->mem_freq;
 
 	switch (csipll & 0x3ff) {
 	case 0x00c:
@@ -625,11 +625,11 @@ static void i915_ironlake_get_mem_freq(struct drm_device *dev)
 	}
 
 	if (dev_priv->fsb_freq == 3200) {
-		dev_priv->c_m = 0;
+		dev_priv->ips.c_m = 0;
 	} else if (dev_priv->fsb_freq > 3200 && dev_priv->fsb_freq <= 4800) {
-		dev_priv->c_m = 1;
+		dev_priv->ips.c_m = 1;
 	} else {
-		dev_priv->c_m = 2;
+		dev_priv->ips.c_m = 2;
 	}
 }
 
@@ -2162,12 +2162,6 @@ err_unref:
 
 /**
  * Lock protecting IPS related data structures
- *   - i915_mch_dev
- *   - dev_priv->max_delay
- *   - dev_priv->min_delay
- *   - dev_priv->fmax
- *   - dev_priv->gpu_busy
- *   - dev_priv->gfx_power
  */
 DEFINE_SPINLOCK(mchdev_lock);
 
@@ -2230,12 +2224,12 @@ static void ironlake_enable_drps(struct drm_device *dev)
 	vstart = (I915_READ(PXVFREQ_BASE + (fstart * 4)) & PXVFREQ_PX_MASK) >>
 		PXVFREQ_PX_SHIFT;
 
-	dev_priv->fmax = fmax; /* IPS callback will increase this */
-	dev_priv->fstart = fstart;
+	dev_priv->ips.fmax = fmax; /* IPS callback will increase this */
+	dev_priv->ips.fstart = fstart;
 
-	dev_priv->max_delay = fstart;
-	dev_priv->min_delay = fmin;
-	dev_priv->cur_delay = fstart;
+	dev_priv->ips.max_delay = fstart;
+	dev_priv->ips.min_delay = fmin;
+	dev_priv->ips.cur_delay = fstart;
 
 	DRM_DEBUG_DRIVER("fmax: %d, fmin: %d, fstart: %d\n",
 			 fmax, fmin, fstart);
@@ -2258,11 +2252,11 @@ static void ironlake_enable_drps(struct drm_device *dev)
 
 	ironlake_set_drps(dev, fstart);
 
-	dev_priv->last_count1 = I915_READ(0x112e4) + I915_READ(0x112e8) +
+	dev_priv->ips.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);
+	dev_priv->ips.last_time1 = jiffies_to_msecs(jiffies);
+	dev_priv->ips.last_count2 = I915_READ(0x112f4);
+	getrawmonotonic(&dev_priv->ips.last_time2);
 
 	spin_unlock_irq(&mchdev_lock);
 }
@@ -2284,7 +2278,7 @@ static void ironlake_disable_drps(struct drm_device *dev)
 	I915_WRITE(DEIMR, I915_READ(DEIMR) | DE_PCU_EVENT);
 
 	/* Go back to the starting frequency */
-	ironlake_set_drps(dev, dev_priv->fstart);
+	ironlake_set_drps(dev, dev_priv->ips.fstart);
 	mdelay(1);
 	rgvswctl |= MEMCTL_CMD_STS;
 	I915_WRITE(MEMSWCTL, rgvswctl);
@@ -2741,7 +2735,7 @@ unsigned long i915_chipset_val(struct drm_i915_private *dev_priv)
 
 	assert_spin_locked(&mchdev_lock);
 
-	diff1 = now - dev_priv->last_time1;
+	diff1 = now - dev_priv->ips.last_time1;
 
 	/* Prevent division-by-zero if we are asking too fast.
 	 * Also, we don't get interesting results if we are polling
@@ -2749,7 +2743,7 @@ unsigned long i915_chipset_val(struct drm_i915_private *dev_priv)
 	 * in such cases.
 	 */
 	if (diff1 <= 10)
-		return dev_priv->chipset_power;
+		return dev_priv->ips.chipset_power;
 
 	count1 = I915_READ(DMIEC);
 	count2 = I915_READ(DDREC);
@@ -2758,16 +2752,16 @@ unsigned long i915_chipset_val(struct drm_i915_private *dev_priv)
 	total_count = count1 + count2 + count3;
 
 	/* FIXME: handle per-counter overflow */
-	if (total_count < dev_priv->last_count1) {
-		diff = ~0UL - dev_priv->last_count1;
+	if (total_count < dev_priv->ips.last_count1) {
+		diff = ~0UL - dev_priv->ips.last_count1;
 		diff += total_count;
 	} else {
-		diff = total_count - dev_priv->last_count1;
+		diff = total_count - dev_priv->ips.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) {
+		if (cparams[i].i == dev_priv->ips.c_m &&
+		    cparams[i].t == dev_priv->ips.r_t) {
 			m = cparams[i].m;
 			c = cparams[i].c;
 			break;
@@ -2778,10 +2772,10 @@ unsigned long i915_chipset_val(struct drm_i915_private *dev_priv)
 	ret = ((m * diff) + c);
 	ret = div_u64(ret, 10);
 
-	dev_priv->last_count1 = total_count;
-	dev_priv->last_time1 = now;
+	dev_priv->ips.last_count1 = total_count;
+	dev_priv->ips.last_time1 = now;
 
-	dev_priv->chipset_power = ret;
+	dev_priv->ips.chipset_power = ret;
 
 	return ret;
 }
@@ -2952,7 +2946,7 @@ static void __i915_update_gfx_val(struct drm_i915_private *dev_priv)
 	assert_spin_locked(&mchdev_lock);
 
 	getrawmonotonic(&now);
-	diff1 = timespec_sub(now, dev_priv->last_time2);
+	diff1 = timespec_sub(now, dev_priv->ips.last_time2);
 
 	/* Don't divide by 0 */
 	diffms = diff1.tv_sec * 1000 + diff1.tv_nsec / 1000000;
@@ -2961,20 +2955,20 @@ static void __i915_update_gfx_val(struct drm_i915_private *dev_priv)
 
 	count = I915_READ(GFXEC);
 
-	if (count < dev_priv->last_count2) {
-		diff = ~0UL - dev_priv->last_count2;
+	if (count < dev_priv->ips.last_count2) {
+		diff = ~0UL - dev_priv->ips.last_count2;
 		diff += count;
 	} else {
-		diff = count - dev_priv->last_count2;
+		diff = count - dev_priv->ips.last_count2;
 	}
 
-	dev_priv->last_count2 = count;
-	dev_priv->last_time2 = now;
+	dev_priv->ips.last_count2 = count;
+	dev_priv->ips.last_time2 = now;
 
 	/* More magic constants... */
 	diff = diff * 1181;
 	diff = div_u64(diff, diffms * 10);
-	dev_priv->gfx_power = diff;
+	dev_priv->ips.gfx_power = diff;
 }
 
 void i915_update_gfx_val(struct drm_i915_private *dev_priv)
@@ -3016,14 +3010,14 @@ unsigned long i915_gfx_val(struct drm_i915_private *dev_priv)
 
 	corr = corr * ((150142 * state1) / 10000 - 78642);
 	corr /= 100000;
-	corr2 = (corr * dev_priv->corr);
+	corr2 = (corr * dev_priv->ips.corr);
 
 	state2 = (corr2 * state1) / 10000;
 	state2 /= 100; /* convert to mW */
 
 	__i915_update_gfx_val(dev_priv);
 
-	return dev_priv->gfx_power + state2;
+	return dev_priv->ips.gfx_power + state2;
 }
 
 /**
@@ -3071,8 +3065,8 @@ bool i915_gpu_raise(void)
 	}
 	dev_priv = i915_mch_dev;
 
-	if (dev_priv->max_delay > dev_priv->fmax)
-		dev_priv->max_delay--;
+	if (dev_priv->ips.max_delay > dev_priv->ips.fmax)
+		dev_priv->ips.max_delay--;
 
 out_unlock:
 	spin_unlock_irq(&mchdev_lock);
@@ -3099,8 +3093,8 @@ bool i915_gpu_lower(void)
 	}
 	dev_priv = i915_mch_dev;
 
-	if (dev_priv->max_delay < dev_priv->min_delay)
-		dev_priv->max_delay++;
+	if (dev_priv->ips.max_delay < dev_priv->ips.min_delay)
+		dev_priv->ips.max_delay++;
 
 out_unlock:
 	spin_unlock_irq(&mchdev_lock);
@@ -3154,9 +3148,9 @@ bool i915_gpu_turbo_disable(void)
 	}
 	dev_priv = i915_mch_dev;
 
-	dev_priv->max_delay = dev_priv->fstart;
+	dev_priv->ips.max_delay = dev_priv->ips.fstart;
 
-	if (!ironlake_set_drps(dev_priv->dev, dev_priv->fstart))
+	if (!ironlake_set_drps(dev_priv->dev, dev_priv->ips.fstart))
 		ret = false;
 
 out_unlock:
@@ -3271,7 +3265,7 @@ static void intel_init_emon(struct drm_device *dev)
 
 	lcfuse = I915_READ(LCFUSE02);
 
-	dev_priv->corr = (lcfuse & LCFUSE_HIV_MASK);
+	dev_priv->ips.corr = (lcfuse & LCFUSE_HIV_MASK);
 }
 
 void intel_disable_gt_powersave(struct drm_device *dev)