From: Ville Syrjälä Date: Fri, 18 Aug 2017 18:36:59 +0000 (+0300) Subject: drm/i915: Extract PIPESTAT irq handling into separate functions X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=eb64343ca6dd03241579400e037f0e15e6831b0c;p=openwrt%2Fstaging%2Fblogic.git drm/i915: Extract PIPESTAT irq handling into separate functions Extract the gen2-4 PIPESTAT irq handling into separate functions just like we already do on VLV/CHV. We can share valleyview_pipestat_irq_ack() on all gmch platforms to actually read and clear the PIPESTAT status bits, so let's rename it to i9xx_pipestat_irq_ack(). Reviewed-by: Chris Wilson Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20170818183705.27850-11-ville.syrjala@linux.intel.com --- diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 93cba2de32bc..27fd8e91084d 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -1755,8 +1755,8 @@ static void i9xx_pipestat_irq_reset(struct drm_i915_private *dev_priv) } } -static void valleyview_pipestat_irq_ack(struct drm_i915_private *dev_priv, - u32 iir, u32 pipe_stats[I915_MAX_PIPES]) +static void i9xx_pipestat_irq_ack(struct drm_i915_private *dev_priv, + u32 iir, u32 pipe_stats[I915_MAX_PIPES]) { int pipe; @@ -1813,6 +1813,74 @@ static void valleyview_pipestat_irq_ack(struct drm_i915_private *dev_priv, spin_unlock(&dev_priv->irq_lock); } +static void i8xx_pipestat_irq_handler(struct drm_i915_private *dev_priv, + u16 iir, u32 pipe_stats[I915_MAX_PIPES]) +{ + enum pipe pipe; + + for_each_pipe(dev_priv, pipe) { + if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS) + drm_handle_vblank(&dev_priv->drm, pipe); + + if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS) + i9xx_pipe_crc_irq_handler(dev_priv, pipe); + + if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) + intel_cpu_fifo_underrun_irq_handler(dev_priv, pipe); + } +} + +static void i915_pipestat_irq_handler(struct drm_i915_private *dev_priv, + u32 iir, u32 pipe_stats[I915_MAX_PIPES]) +{ + bool blc_event = false; + enum pipe pipe; + + for_each_pipe(dev_priv, pipe) { + if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS) + drm_handle_vblank(&dev_priv->drm, pipe); + + if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS) + blc_event = true; + + if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS) + i9xx_pipe_crc_irq_handler(dev_priv, pipe); + + if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) + intel_cpu_fifo_underrun_irq_handler(dev_priv, pipe); + } + + if (blc_event || (iir & I915_ASLE_INTERRUPT)) + intel_opregion_asle_intr(dev_priv); +} + +static void i965_pipestat_irq_handler(struct drm_i915_private *dev_priv, + u32 iir, u32 pipe_stats[I915_MAX_PIPES]) +{ + bool blc_event = false; + enum pipe pipe; + + for_each_pipe(dev_priv, pipe) { + if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS) + drm_handle_vblank(&dev_priv->drm, pipe); + + if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS) + blc_event = true; + + if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS) + i9xx_pipe_crc_irq_handler(dev_priv, pipe); + + if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) + intel_cpu_fifo_underrun_irq_handler(dev_priv, pipe); + } + + if (blc_event || (iir & I915_ASLE_INTERRUPT)) + intel_opregion_asle_intr(dev_priv); + + if (pipe_stats[0] & PIPE_GMBUS_INTERRUPT_STATUS) + gmbus_irq_handler(dev_priv); +} + static void valleyview_pipestat_irq_handler(struct drm_i915_private *dev_priv, u32 pipe_stats[I915_MAX_PIPES]) { @@ -1928,7 +1996,7 @@ static irqreturn_t valleyview_irq_handler(int irq, void *arg) /* Call regardless, as some status bits might not be * signalled in iir */ - valleyview_pipestat_irq_ack(dev_priv, iir, pipe_stats); + i9xx_pipestat_irq_ack(dev_priv, iir, pipe_stats); if (iir & (I915_LPE_PIPE_A_INTERRUPT | I915_LPE_PIPE_B_INTERRUPT)) @@ -2012,7 +2080,7 @@ static irqreturn_t cherryview_irq_handler(int irq, void *arg) /* Call regardless, as some status bits might not be * signalled in iir */ - valleyview_pipestat_irq_ack(dev_priv, iir, pipe_stats); + i9xx_pipestat_irq_ack(dev_priv, iir, pipe_stats); if (iir & (I915_LPE_PIPE_A_INTERRUPT | I915_LPE_PIPE_B_INTERRUPT | @@ -3630,8 +3698,6 @@ static irqreturn_t i8xx_irq_handler(int irq, void *arg) struct drm_device *dev = arg; struct drm_i915_private *dev_priv = to_i915(dev); u16 iir, new_iir; - u32 pipe_stats[2]; - int pipe; irqreturn_t ret; if (!intel_irqs_enabled(dev_priv)) @@ -3646,26 +3712,14 @@ static irqreturn_t i8xx_irq_handler(int irq, void *arg) goto out; while (iir) { - /* Can't rely on pipestat interrupt bit in iir as it might - * have been cleared after the pipestat interrupt was received. - * It doesn't set the bit in iir again, but it still produces - * interrupts (for non-MSI). - */ - spin_lock(&dev_priv->irq_lock); + u32 pipe_stats[I915_MAX_PIPES] = {}; + if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT) DRM_DEBUG("Command parser error, iir 0x%08x\n", iir); - for_each_pipe(dev_priv, pipe) { - i915_reg_t reg = PIPESTAT(pipe); - pipe_stats[pipe] = I915_READ(reg); - - /* - * Clear the PIPE*STAT regs before the IIR - */ - if (pipe_stats[pipe] & 0x8000ffff) - I915_WRITE(reg, pipe_stats[pipe]); - } - spin_unlock(&dev_priv->irq_lock); + /* Call regardless, as some status bits might not be + * signalled in iir */ + i9xx_pipestat_irq_ack(dev_priv, iir, pipe_stats); I915_WRITE16(IIR, iir); new_iir = I915_READ16(IIR); /* Flush posted writes */ @@ -3673,21 +3727,7 @@ static irqreturn_t i8xx_irq_handler(int irq, void *arg) if (iir & I915_USER_INTERRUPT) notify_ring(dev_priv->engine[RCS]); - for_each_pipe(dev_priv, pipe) { - int plane = pipe; - if (HAS_FBC(dev_priv)) - plane = !plane; - - if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS) - drm_handle_vblank(&dev_priv->drm, pipe); - - if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS) - i9xx_pipe_crc_irq_handler(dev_priv, pipe); - - if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) - intel_cpu_fifo_underrun_irq_handler(dev_priv, - pipe); - } + i8xx_pipestat_irq_handler(dev_priv, iir, pipe_stats); iir = new_iir; } @@ -3769,8 +3809,8 @@ static irqreturn_t i915_irq_handler(int irq, void *arg) { struct drm_device *dev = arg; struct drm_i915_private *dev_priv = to_i915(dev); - u32 iir, new_iir, pipe_stats[I915_MAX_PIPES]; - int pipe, ret = IRQ_NONE; + u32 iir, new_iir; + int ret = IRQ_NONE; if (!intel_irqs_enabled(dev_priv)) return IRQ_NONE; @@ -3780,29 +3820,15 @@ static irqreturn_t i915_irq_handler(int irq, void *arg) iir = I915_READ(IIR); do { - bool irq_received = (iir) != 0; - bool blc_event = false; + u32 pipe_stats[I915_MAX_PIPES] = {}; + bool irq_received = iir != 0; - /* Can't rely on pipestat interrupt bit in iir as it might - * have been cleared after the pipestat interrupt was received. - * It doesn't set the bit in iir again, but it still produces - * interrupts (for non-MSI). - */ - spin_lock(&dev_priv->irq_lock); if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT) DRM_DEBUG("Command parser error, iir 0x%08x\n", iir); - for_each_pipe(dev_priv, pipe) { - i915_reg_t reg = PIPESTAT(pipe); - pipe_stats[pipe] = I915_READ(reg); - - /* Clear the PIPE*STAT regs before the IIR */ - if (pipe_stats[pipe] & 0x8000ffff) { - I915_WRITE(reg, pipe_stats[pipe]); - irq_received = true; - } - } - spin_unlock(&dev_priv->irq_lock); + /* Call regardless, as some status bits might not be + * signalled in iir */ + i9xx_pipestat_irq_ack(dev_priv, iir, pipe_stats); if (!irq_received) break; @@ -3821,27 +3847,7 @@ static irqreturn_t i915_irq_handler(int irq, void *arg) if (iir & I915_USER_INTERRUPT) notify_ring(dev_priv->engine[RCS]); - for_each_pipe(dev_priv, pipe) { - int plane = pipe; - if (HAS_FBC(dev_priv)) - plane = !plane; - - if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS) - drm_handle_vblank(&dev_priv->drm, pipe); - - if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS) - blc_event = true; - - if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS) - i9xx_pipe_crc_irq_handler(dev_priv, pipe); - - if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) - intel_cpu_fifo_underrun_irq_handler(dev_priv, - pipe); - } - - if (blc_event || (iir & I915_ASLE_INTERRUPT)) - intel_opregion_asle_intr(dev_priv); + i915_pipestat_irq_handler(dev_priv, iir, pipe_stats); /* With MSI, interrupts are only generated when iir * transitions from zero to nonzero. If another bit got @@ -3982,8 +3988,7 @@ static irqreturn_t i965_irq_handler(int irq, void *arg) struct drm_device *dev = arg; struct drm_i915_private *dev_priv = to_i915(dev); u32 iir, new_iir; - u32 pipe_stats[I915_MAX_PIPES]; - int ret = IRQ_NONE, pipe; + int ret = IRQ_NONE; if (!intel_irqs_enabled(dev_priv)) return IRQ_NONE; @@ -3994,31 +3999,15 @@ static irqreturn_t i965_irq_handler(int irq, void *arg) iir = I915_READ(IIR); for (;;) { - bool irq_received = (iir) != 0; - bool blc_event = false; + u32 pipe_stats[I915_MAX_PIPES] = {}; + bool irq_received = iir != 0; - /* Can't rely on pipestat interrupt bit in iir as it might - * have been cleared after the pipestat interrupt was received. - * It doesn't set the bit in iir again, but it still produces - * interrupts (for non-MSI). - */ - spin_lock(&dev_priv->irq_lock); if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT) DRM_DEBUG("Command parser error, iir 0x%08x\n", iir); - for_each_pipe(dev_priv, pipe) { - i915_reg_t reg = PIPESTAT(pipe); - pipe_stats[pipe] = I915_READ(reg); - - /* - * Clear the PIPE*STAT regs before the IIR - */ - if (pipe_stats[pipe] & 0x8000ffff) { - I915_WRITE(reg, pipe_stats[pipe]); - irq_received = true; - } - } - spin_unlock(&dev_priv->irq_lock); + /* Call regardless, as some status bits might not be + * signalled in iir */ + i9xx_pipestat_irq_ack(dev_priv, iir, pipe_stats); if (!irq_received) break; @@ -4040,25 +4029,7 @@ static irqreturn_t i965_irq_handler(int irq, void *arg) if (iir & I915_BSD_USER_INTERRUPT) notify_ring(dev_priv->engine[VCS]); - for_each_pipe(dev_priv, pipe) { - if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS) - drm_handle_vblank(&dev_priv->drm, pipe); - - if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS) - blc_event = true; - - if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS) - i9xx_pipe_crc_irq_handler(dev_priv, pipe); - - if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) - intel_cpu_fifo_underrun_irq_handler(dev_priv, pipe); - } - - if (blc_event || (iir & I915_ASLE_INTERRUPT)) - intel_opregion_asle_intr(dev_priv); - - if (pipe_stats[0] & PIPE_GMBUS_INTERRUPT_STATUS) - gmbus_irq_handler(dev_priv); + i965_pipestat_irq_handler(dev_priv, iir, pipe_stats); /* With MSI, interrupts are only generated when iir * transitions from zero to nonzero. If another bit got