[Intel-gfx] [PATCH 1/5] drm/i915: Turn __raw_i915_read8() & co. in to inline functions
Ville Syrjälä
ville.syrjala at linux.intel.com
Thu Oct 22 06:49:19 PDT 2015
On Thu, Oct 22, 2015 at 03:32:11PM +0200, Daniel Vetter wrote:
> On Thu, Oct 22, 2015 at 03:34:56PM +0300, ville.syrjala at linux.intel.com wrote:
> > From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> >
> > There's no need for __raw_i915_read8() & co. bot be macros, so make them
>
> s/bot/be
Actually s/bot/to/ :)
>
> > inline funcitons. To avoid typo mistakes generate the inline functions
>
> s/funcitons/functions/
>
> > using preprocessor templates.
> >
> > We have a few users of the raw register acces functions outside
> > intel_uncore.c, so let's also move the functions into intel_drv.h.
> >
> > While doing that switch I915_READ_FW() & co. to use the
> > __raw_i915_read() functions, and use the _FW macros everywhere
> > outside intel_uncore.c where we want to read registers without
> > grabbing forcewake and whatnot. The only exception is
> > i915_check_vgpu() which itself gets called from intel_uncore.c,
> > so using the __raw_i915_read stuff there seems appropriate.
> >
> > v2: Squash in the intel_uncore.c->i915_drv.h move
> > Convert I915_READ_FW() to use __raw_i915_read(), and use
> > I915_READ_FW() outside of intel_uncore.c (Chris)
> >
> > Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
>
> Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
>
> > ---
> > drivers/gpu/drm/i915/i915_debugfs.c | 2 +-
> > drivers/gpu/drm/i915/i915_drv.h | 30 ++++++++++++++++++++++++++++--
> > drivers/gpu/drm/i915/i915_irq.c | 10 ++++------
> > drivers/gpu/drm/i915/i915_vgpu.c | 6 +++---
> > drivers/gpu/drm/i915/intel_uncore.c | 14 +-------------
> > 5 files changed, 37 insertions(+), 25 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
> > index eca94d0..89ba549 100644
> > --- a/drivers/gpu/drm/i915/i915_debugfs.c
> > +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> > @@ -1523,7 +1523,7 @@ static int gen6_drpc_info(struct seq_file *m)
> > seq_printf(m, "RC information accurate: %s\n", yesno(count < 51));
> > }
> >
> > - gt_core_status = readl(dev_priv->regs + GEN6_GT_CORE_STATUS);
> > + gt_core_status = I915_READ_FW(GEN6_GT_CORE_STATUS);
> > trace_i915_reg_rw(false, GEN6_GT_CORE_STATUS, gt_core_status, 4, true);
> >
> > rpmodectl1 = I915_READ(GEN6_RP_CONTROL);
> > diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> > index 9a15ebe..01fdc70 100644
> > --- a/drivers/gpu/drm/i915/i915_drv.h
> > +++ b/drivers/gpu/drm/i915/i915_drv.h
> > @@ -3452,6 +3452,32 @@ int intel_freq_opcode(struct drm_i915_private *dev_priv, int val);
> > #define POSTING_READ(reg) (void)I915_READ_NOTRACE(reg)
> > #define POSTING_READ16(reg) (void)I915_READ16_NOTRACE(reg)
> >
> > +#define __raw_read(x, s) \
> > +static inline uint##x##_t __raw_i915_read##x(struct drm_i915_private *dev_priv, \
> > + uint32_t reg) \
> > +{ \
> > + return read##s(dev_priv->regs + reg); \
> > +}
> > +
> > +#define __raw_write(x, s) \
> > +static inline void __raw_i915_write##x(struct drm_i915_private *dev_priv, \
> > + uint32_t reg, uint##x##_t val) \
> > +{ \
> > + write##s(val, dev_priv->regs + reg); \
> > +}
> > +__raw_read(8, b)
> > +__raw_read(16, w)
> > +__raw_read(32, l)
> > +__raw_read(64, q)
> > +
> > +__raw_write(8, b)
> > +__raw_write(16, w)
> > +__raw_write(32, l)
> > +__raw_write(64, q)
> > +
> > +#undef __raw_read
> > +#undef __raw_write
> > +
> > /* These are untraced mmio-accessors that are only valid to be used inside
> > * criticial sections inside IRQ handlers where forcewake is explicitly
> > * controlled.
> > @@ -3459,8 +3485,8 @@ int intel_freq_opcode(struct drm_i915_private *dev_priv, int val);
> > * Note: Should only be used between intel_uncore_forcewake_irqlock() and
> > * intel_uncore_forcewake_irqunlock().
> > */
> > -#define I915_READ_FW(reg__) readl(dev_priv->regs + (reg__))
> > -#define I915_WRITE_FW(reg__, val__) writel(val__, dev_priv->regs + (reg__))
> > +#define I915_READ_FW(reg__) __raw_i915_read32(dev_priv, (reg__))
> > +#define I915_WRITE_FW(reg__, val__) __raw_i915_write32(dev_priv, (reg__), (val__))
> > #define POSTING_READ_FW(reg__) (void)I915_READ_FW(reg__)
> >
> > /* "Broadcast RGB" property */
> > diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
> > index 9caf22c..a0ed58d 100644
> > --- a/drivers/gpu/drm/i915/i915_irq.c
> > +++ b/drivers/gpu/drm/i915/i915_irq.c
> > @@ -717,9 +717,7 @@ static u32 g4x_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
> > return I915_READ(PIPE_FRMCOUNT_G4X(pipe));
> > }
> >
> > -/* raw reads, only for fast reads of display block, no need for forcewake etc. */
> > -#define __raw_i915_read32(dev_priv__, reg__) readl((dev_priv__)->regs + (reg__))
> > -
> > +/* I915_READ_FW, only for fast reads of display block, no need for forcewake etc. */
> > static int __intel_get_crtc_scanline(struct intel_crtc *crtc)
> > {
> > struct drm_device *dev = crtc->base.dev;
> > @@ -733,9 +731,9 @@ static int __intel_get_crtc_scanline(struct intel_crtc *crtc)
> > vtotal /= 2;
> >
> > if (IS_GEN2(dev))
> > - position = __raw_i915_read32(dev_priv, PIPEDSL(pipe)) & DSL_LINEMASK_GEN2;
> > + position = I915_READ_FW(PIPEDSL(pipe)) & DSL_LINEMASK_GEN2;
> > else
> > - position = __raw_i915_read32(dev_priv, PIPEDSL(pipe)) & DSL_LINEMASK_GEN3;
> > + position = I915_READ_FW(PIPEDSL(pipe)) & DSL_LINEMASK_GEN3;
> >
> > /*
> > * On HSW, the DSL reg (0x70000) appears to return 0 if we
> > @@ -827,7 +825,7 @@ static int i915_get_crtc_scanoutpos(struct drm_device *dev, unsigned int pipe,
> > * We can split this into vertical and horizontal
> > * scanout position.
> > */
> > - position = (__raw_i915_read32(dev_priv, PIPEFRAMEPIXEL(pipe)) & PIPE_PIXEL_MASK) >> PIPE_PIXEL_SHIFT;
> > + position = (I915_READ_FW(PIPEFRAMEPIXEL(pipe)) & PIPE_PIXEL_MASK) >> PIPE_PIXEL_SHIFT;
> >
> > /* convert to pixel counts */
> > vbl_start *= htotal;
> > diff --git a/drivers/gpu/drm/i915/i915_vgpu.c b/drivers/gpu/drm/i915/i915_vgpu.c
> > index 5eee75b..dea7429 100644
> > --- a/drivers/gpu/drm/i915/i915_vgpu.c
> > +++ b/drivers/gpu/drm/i915/i915_vgpu.c
> > @@ -69,13 +69,13 @@ void i915_check_vgpu(struct drm_device *dev)
> > if (!IS_HASWELL(dev))
> > return;
> >
> > - magic = readq(dev_priv->regs + vgtif_reg(magic));
> > + magic = __raw_i915_read64(dev_priv, vgtif_reg(magic));
> > if (magic != VGT_MAGIC)
> > return;
> >
> > version = INTEL_VGT_IF_VERSION_ENCODE(
> > - readw(dev_priv->regs + vgtif_reg(version_major)),
> > - readw(dev_priv->regs + vgtif_reg(version_minor)));
> > + __raw_i915_read16(dev_priv, vgtif_reg(version_major)),
> > + __raw_i915_read16(dev_priv, vgtif_reg(version_minor)));
> > if (version != INTEL_VGT_IF_VERSION) {
> > DRM_INFO("VGT interface version mismatch!\n");
> > return;
> > diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
> > index 1663ea5..8dfeac9 100644
> > --- a/drivers/gpu/drm/i915/intel_uncore.c
> > +++ b/drivers/gpu/drm/i915/intel_uncore.c
> > @@ -29,19 +29,7 @@
> >
> > #define FORCEWAKE_ACK_TIMEOUT_MS 50
> >
> > -#define __raw_i915_read8(dev_priv__, reg__) readb((dev_priv__)->regs + (reg__))
> > -#define __raw_i915_write8(dev_priv__, reg__, val__) writeb(val__, (dev_priv__)->regs + (reg__))
> > -
> > -#define __raw_i915_read16(dev_priv__, reg__) readw((dev_priv__)->regs + (reg__))
> > -#define __raw_i915_write16(dev_priv__, reg__, val__) writew(val__, (dev_priv__)->regs + (reg__))
> > -
> > -#define __raw_i915_read32(dev_priv__, reg__) readl((dev_priv__)->regs + (reg__))
> > -#define __raw_i915_write32(dev_priv__, reg__, val__) writel(val__, (dev_priv__)->regs + (reg__))
> > -
> > -#define __raw_i915_read64(dev_priv__, reg__) readq((dev_priv__)->regs + (reg__))
> > -#define __raw_i915_write64(dev_priv__, reg__, val__) writeq(val__, (dev_priv__)->regs + (reg__))
> > -
> > -#define __raw_posting_read(dev_priv__, reg__) (void)__raw_i915_read32(dev_priv__, reg__)
> > +#define __raw_posting_read(dev_priv__, reg__) (void)__raw_i915_read32((dev_priv__), (reg__))
> >
> > static const char * const forcewake_domain_names[] = {
> > "render",
> > --
> > 2.4.9
> >
> > _______________________________________________
> > Intel-gfx mailing list
> > Intel-gfx at lists.freedesktop.org
> > http://lists.freedesktop.org/mailman/listinfo/intel-gfx
>
> --
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch
--
Ville Syrjälä
Intel OTC
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