[Intel-gfx] [PATCH 1/5] drm/i915: Turn __raw_i915_read8() & co. in to inline functions
Daniel Vetter
daniel at ffwll.ch
Thu Oct 22 06:32:11 PDT 2015
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
> 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
>
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--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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