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drm/i915: Convert (void)I915_READ to POSTING_READ 

... and so hide the flushes from tracing.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2010-11-16 15:55:10 +00:00
parent c94f28c383
commit 3143a2bf18
1 changed files with 24 additions and 24 deletions
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48
drivers/gpu/drm/i915/i915_irq.c
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@ -70,7 +70,7 @@ ironlake_enable_graphics_irq(drm_i915_private_t *dev_priv, u32 mask)
if ((dev_priv->gt_irq_mask_reg & mask) != 0) {
dev_priv->gt_irq_mask_reg &= ~mask;
I915_WRITE(GTIMR, dev_priv->gt_irq_mask_reg);
(void) I915_READ(GTIMR);
POSTING_READ(GTIMR);
}
}
@ -80,7 +80,7 @@ ironlake_disable_graphics_irq(drm_i915_private_t *dev_priv, u32 mask)
if ((dev_priv->gt_irq_mask_reg & mask) != mask) {
dev_priv->gt_irq_mask_reg |= mask;
I915_WRITE(GTIMR, dev_priv->gt_irq_mask_reg);
(void) I915_READ(GTIMR);
POSTING_READ(GTIMR);
}
}
@ -91,7 +91,7 @@ ironlake_enable_display_irq(drm_i915_private_t *dev_priv, u32 mask)
if ((dev_priv->irq_mask_reg & mask) != 0) {
dev_priv->irq_mask_reg &= ~mask;
I915_WRITE(DEIMR, dev_priv->irq_mask_reg);
(void) I915_READ(DEIMR);
POSTING_READ(DEIMR);
}
}
@ -101,7 +101,7 @@ ironlake_disable_display_irq(drm_i915_private_t *dev_priv, u32 mask)
if ((dev_priv->irq_mask_reg & mask) != mask) {
dev_priv->irq_mask_reg |= mask;
I915_WRITE(DEIMR, dev_priv->irq_mask_reg);
(void) I915_READ(DEIMR);
POSTING_READ(DEIMR);
}
}
@ -111,7 +111,7 @@ i915_enable_irq(drm_i915_private_t *dev_priv, u32 mask)
if ((dev_priv->irq_mask_reg & mask) != 0) {
dev_priv->irq_mask_reg &= ~mask;
I915_WRITE(IMR, dev_priv->irq_mask_reg);
(void) I915_READ(IMR);
POSTING_READ(IMR);
}
}
@ -121,7 +121,7 @@ i915_disable_irq(drm_i915_private_t *dev_priv, u32 mask)
if ((dev_priv->irq_mask_reg & mask) != mask) {
dev_priv->irq_mask_reg |= mask;
I915_WRITE(IMR, dev_priv->irq_mask_reg);
(void) I915_READ(IMR);
POSTING_READ(IMR);
}
}
@ -144,7 +144,7 @@ i915_enable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask)
dev_priv->pipestat[pipe] |= mask;
/* Enable the interrupt, clear any pending status */
I915_WRITE(reg, dev_priv->pipestat[pipe] | (mask >> 16));
(void) I915_READ(reg);
POSTING_READ(reg);
}
}
@ -156,7 +156,7 @@ i915_disable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask)
dev_priv->pipestat[pipe] &= ~mask;
I915_WRITE(reg, dev_priv->pipestat[pipe]);
(void) I915_READ(reg);
POSTING_READ(reg);
}
}
@ -321,7 +321,7 @@ static irqreturn_t ironlake_irq_handler(struct drm_device *dev)
/* disable master interrupt before clearing iir */
de_ier = I915_READ(DEIER);
I915_WRITE(DEIER, de_ier & ~DE_MASTER_IRQ_CONTROL);
(void)I915_READ(DEIER);
POSTING_READ(DEIER);
de_iir = I915_READ(DEIIR);
gt_iir = I915_READ(GTIIR);
@ -386,7 +386,7 @@ static irqreturn_t ironlake_irq_handler(struct drm_device *dev)
done:
I915_WRITE(DEIER, de_ier);
(void)I915_READ(DEIER);
POSTING_READ(DEIER);
return ret;
}
@ -796,7 +796,7 @@ static void i915_report_and_clear_eir(struct drm_device *dev)
printk(KERN_ERR " ACTHD: 0x%08x\n",
I915_READ(ACTHD_I965));
I915_WRITE(IPEIR_I965, ipeir);
(void)I915_READ(IPEIR_I965);
POSTING_READ(IPEIR_I965);
}
if (eir & GM45_ERROR_PAGE_TABLE) {
u32 pgtbl_err = I915_READ(PGTBL_ER);
@ -804,7 +804,7 @@ static void i915_report_and_clear_eir(struct drm_device *dev)
printk(KERN_ERR " PGTBL_ER: 0x%08x\n",
pgtbl_err);
I915_WRITE(PGTBL_ER, pgtbl_err);
(void)I915_READ(PGTBL_ER);
POSTING_READ(PGTBL_ER);
}
}
@ -815,7 +815,7 @@ static void i915_report_and_clear_eir(struct drm_device *dev)
printk(KERN_ERR " PGTBL_ER: 0x%08x\n",
pgtbl_err);
I915_WRITE(PGTBL_ER, pgtbl_err);
(void)I915_READ(PGTBL_ER);
POSTING_READ(PGTBL_ER);
}
}
@ -846,7 +846,7 @@ static void i915_report_and_clear_eir(struct drm_device *dev)
printk(KERN_ERR " ACTHD: 0x%08x\n",
I915_READ(ACTHD));
I915_WRITE(IPEIR, ipeir);
(void)I915_READ(IPEIR);
POSTING_READ(IPEIR);
} else {
u32 ipeir = I915_READ(IPEIR_I965);
@ -863,12 +863,12 @@ static void i915_report_and_clear_eir(struct drm_device *dev)
printk(KERN_ERR " ACTHD: 0x%08x\n",
I915_READ(ACTHD_I965));
I915_WRITE(IPEIR_I965, ipeir);
(void)I915_READ(IPEIR_I965);
POSTING_READ(IPEIR_I965);
}
}
I915_WRITE(EIR, eir);
(void)I915_READ(EIR);
POSTING_READ(EIR);
eir = I915_READ(EIR);
if (eir) {
/*
@ -1435,17 +1435,17 @@ static void ironlake_irq_preinstall(struct drm_device *dev)
I915_WRITE(DEIMR, 0xffffffff);
I915_WRITE(DEIER, 0x0);
(void) I915_READ(DEIER);
POSTING_READ(DEIER);
/* and GT */
I915_WRITE(GTIMR, 0xffffffff);
I915_WRITE(GTIER, 0x0);
(void) I915_READ(GTIER);
POSTING_READ(GTIER);
/* south display irq */
I915_WRITE(SDEIMR, 0xffffffff);
I915_WRITE(SDEIER, 0x0);
(void) I915_READ(SDEIER);
POSTING_READ(SDEIER);
}
static int ironlake_irq_postinstall(struct drm_device *dev)
@ -1464,7 +1464,7 @@ static int ironlake_irq_postinstall(struct drm_device *dev)
I915_WRITE(DEIIR, I915_READ(DEIIR));
I915_WRITE(DEIMR, dev_priv->irq_mask_reg);
I915_WRITE(DEIER, dev_priv->de_irq_enable_reg);
(void) I915_READ(DEIER);
POSTING_READ(DEIER);
if (IS_GEN6(dev)) {
render_mask =
@ -1485,7 +1485,7 @@ static int ironlake_irq_postinstall(struct drm_device *dev)
}
I915_WRITE(GTIER, dev_priv->gt_irq_enable_reg);
(void) I915_READ(GTIER);
POSTING_READ(GTIER);
if (HAS_PCH_CPT(dev)) {
hotplug_mask = SDE_CRT_HOTPLUG_CPT | SDE_PORTB_HOTPLUG_CPT |
@ -1501,7 +1501,7 @@ static int ironlake_irq_postinstall(struct drm_device *dev)
I915_WRITE(SDEIIR, I915_READ(SDEIIR));
I915_WRITE(SDEIMR, dev_priv->pch_irq_mask_reg);
I915_WRITE(SDEIER, dev_priv->pch_irq_enable_reg);
(void) I915_READ(SDEIER);
POSTING_READ(SDEIER);
if (IS_IRONLAKE_M(dev)) {
/* Clear & enable PCU event interrupts */
@ -1537,7 +1537,7 @@ void i915_driver_irq_preinstall(struct drm_device * dev)
I915_WRITE(PIPEBSTAT, 0);
I915_WRITE(IMR, 0xffffffff);
I915_WRITE(IER, 0x0);
(void) I915_READ(IER);
POSTING_READ(IER);
}
/*
@ -1591,7 +1591,7 @@ int i915_driver_irq_postinstall(struct drm_device *dev)
I915_WRITE(IMR, dev_priv->irq_mask_reg);
I915_WRITE(IER, enable_mask);
(void) I915_READ(IER);
POSTING_READ(IER);
if (I915_HAS_HOTPLUG(dev)) {
u32 hotplug_en = I915_READ(PORT_HOTPLUG_EN);