X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fchar%2Fdrm%2Fi830_irq.c;h=5841f7674956b2873b8d5d15a39fc9c160d421d8;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=6a0e25c26b7681e0edf19d6db02dec666cfc26e3;hpb=c7b5ebbddf7bcd3651947760f423e3783bbe6573;p=linux-2.6.git diff --git a/drivers/char/drm/i830_irq.c b/drivers/char/drm/i830_irq.c index 6a0e25c26..5841f7674 100644 --- a/drivers/char/drm/i830_irq.c +++ b/drivers/char/drm/i830_irq.c @@ -9,11 +9,11 @@ * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: - * + * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. - * + * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL @@ -26,7 +26,6 @@ * */ -#include "i830.h" #include "drmP.h" #include "drm.h" #include "i830_drm.h" @@ -34,29 +33,27 @@ #include /* For task queue support */ #include - -irqreturn_t i830_driver_irq_handler( DRM_IRQ_ARGS ) +irqreturn_t i830_driver_irq_handler(DRM_IRQ_ARGS) { - drm_device_t *dev = (drm_device_t *)arg; - drm_i830_private_t *dev_priv = (drm_i830_private_t *)dev->dev_private; - u16 temp; + drm_device_t *dev = (drm_device_t *) arg; + drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private; + u16 temp; - temp = I830_READ16(I830REG_INT_IDENTITY_R); + temp = I830_READ16(I830REG_INT_IDENTITY_R); DRM_DEBUG("%x\n", temp); - if ( !( temp & 2 ) ) + if (!(temp & 2)) return IRQ_NONE; - I830_WRITE16(I830REG_INT_IDENTITY_R, temp); + I830_WRITE16(I830REG_INT_IDENTITY_R, temp); atomic_inc(&dev_priv->irq_received); - wake_up_interruptible(&dev_priv->irq_queue); + wake_up_interruptible(&dev_priv->irq_queue); return IRQ_HANDLED; } - -int i830_emit_irq(drm_device_t *dev) +static int i830_emit_irq(drm_device_t * dev) { drm_i830_private_t *dev_priv = dev->dev_private; RING_LOCALS; @@ -65,27 +62,25 @@ int i830_emit_irq(drm_device_t *dev) atomic_inc(&dev_priv->irq_emitted); - BEGIN_LP_RING(2); - OUT_RING( 0 ); - OUT_RING( GFX_OP_USER_INTERRUPT ); - ADVANCE_LP_RING(); + BEGIN_LP_RING(2); + OUT_RING(0); + OUT_RING(GFX_OP_USER_INTERRUPT); + ADVANCE_LP_RING(); return atomic_read(&dev_priv->irq_emitted); } - -int i830_wait_irq(drm_device_t *dev, int irq_nr) +static int i830_wait_irq(drm_device_t * dev, int irq_nr) { - drm_i830_private_t *dev_priv = - (drm_i830_private_t *)dev->dev_private; + drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private; DECLARE_WAITQUEUE(entry, current); - unsigned long end = jiffies + HZ*3; + unsigned long end = jiffies + HZ * 3; int ret = 0; DRM_DEBUG("%s\n", __FUNCTION__); - if (atomic_read(&dev_priv->irq_received) >= irq_nr) - return 0; + if (atomic_read(&dev_priv->irq_received) >= irq_nr) + return 0; dev_priv->sarea_priv->perf_boxes |= I830_BOX_WAIT; @@ -93,21 +88,21 @@ int i830_wait_irq(drm_device_t *dev, int irq_nr) for (;;) { __set_current_state(TASK_INTERRUPTIBLE); - if (atomic_read(&dev_priv->irq_received) >= irq_nr) - break; - if((signed)(end - jiffies) <= 0) { + if (atomic_read(&dev_priv->irq_received) >= irq_nr) + break; + if ((signed)(end - jiffies) <= 0) { DRM_ERROR("timeout iir %x imr %x ier %x hwstam %x\n", - I830_READ16( I830REG_INT_IDENTITY_R ), - I830_READ16( I830REG_INT_MASK_R ), - I830_READ16( I830REG_INT_ENABLE_R ), - I830_READ16( I830REG_HWSTAM )); + I830_READ16(I830REG_INT_IDENTITY_R), + I830_READ16(I830REG_INT_MASK_R), + I830_READ16(I830REG_INT_ENABLE_R), + I830_READ16(I830REG_HWSTAM)); - ret = -EBUSY; /* Lockup? Missed irq? */ + ret = -EBUSY; /* Lockup? Missed irq? */ break; } - schedule_timeout(HZ*3); - if (signal_pending(current)) { - ret = -EINTR; + schedule_timeout(HZ * 3); + if (signal_pending(current)) { + ret = -EINTR; break; } } @@ -117,92 +112,87 @@ int i830_wait_irq(drm_device_t *dev, int irq_nr) return ret; } - /* Needs the lock as it touches the ring. */ -int i830_irq_emit( struct inode *inode, struct file *filp, unsigned int cmd, - unsigned long arg ) +int i830_irq_emit(struct inode *inode, struct file *filp, unsigned int cmd, + unsigned long arg) { - drm_file_t *priv = filp->private_data; - drm_device_t *dev = priv->dev; + drm_file_t *priv = filp->private_data; + drm_device_t *dev = priv->head->dev; drm_i830_private_t *dev_priv = dev->dev_private; drm_i830_irq_emit_t emit; int result; - if(!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) { - DRM_ERROR("i830_irq_emit called without lock held\n"); - return -EINVAL; - } + LOCK_TEST_WITH_RETURN(dev, filp); - if ( !dev_priv ) { - DRM_ERROR( "%s called with no initialization\n", __FUNCTION__ ); + if (!dev_priv) { + DRM_ERROR("%s called with no initialization\n", __FUNCTION__); return -EINVAL; } - if (copy_from_user( &emit, (drm_i830_irq_emit_t __user *)arg, sizeof(emit) )) + if (copy_from_user + (&emit, (drm_i830_irq_emit_t __user *) arg, sizeof(emit))) return -EFAULT; - result = i830_emit_irq( dev ); + result = i830_emit_irq(dev); - if ( copy_to_user( emit.irq_seq, &result, sizeof(int) ) ) { - DRM_ERROR( "copy_to_user\n" ); + if (copy_to_user(emit.irq_seq, &result, sizeof(int))) { + DRM_ERROR("copy_to_user\n"); return -EFAULT; } return 0; } - /* Doesn't need the hardware lock. */ -int i830_irq_wait( struct inode *inode, struct file *filp, unsigned int cmd, - unsigned long arg ) +int i830_irq_wait(struct inode *inode, struct file *filp, unsigned int cmd, + unsigned long arg) { - drm_file_t *priv = filp->private_data; - drm_device_t *dev = priv->dev; + drm_file_t *priv = filp->private_data; + drm_device_t *dev = priv->head->dev; drm_i830_private_t *dev_priv = dev->dev_private; drm_i830_irq_wait_t irqwait; - if ( !dev_priv ) { - DRM_ERROR( "%s called with no initialization\n", __FUNCTION__ ); + if (!dev_priv) { + DRM_ERROR("%s called with no initialization\n", __FUNCTION__); return -EINVAL; } - if (copy_from_user( &irqwait, (drm_i830_irq_wait_t __user *)arg, - sizeof(irqwait) )) + if (copy_from_user(&irqwait, (drm_i830_irq_wait_t __user *) arg, + sizeof(irqwait))) return -EFAULT; - return i830_wait_irq( dev, irqwait.irq_seq ); + return i830_wait_irq(dev, irqwait.irq_seq); } - /* drm_dma.h hooks */ -void i830_driver_irq_preinstall( drm_device_t *dev ) { - drm_i830_private_t *dev_priv = - (drm_i830_private_t *)dev->dev_private; +void i830_driver_irq_preinstall(drm_device_t * dev) +{ + drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private; - I830_WRITE16( I830REG_HWSTAM, 0xffff ); - I830_WRITE16( I830REG_INT_MASK_R, 0x0 ); - I830_WRITE16( I830REG_INT_ENABLE_R, 0x0 ); + I830_WRITE16(I830REG_HWSTAM, 0xffff); + I830_WRITE16(I830REG_INT_MASK_R, 0x0); + I830_WRITE16(I830REG_INT_ENABLE_R, 0x0); atomic_set(&dev_priv->irq_received, 0); atomic_set(&dev_priv->irq_emitted, 0); init_waitqueue_head(&dev_priv->irq_queue); } -void i830_driver_irq_postinstall( drm_device_t *dev ) { - drm_i830_private_t *dev_priv = - (drm_i830_private_t *)dev->dev_private; +void i830_driver_irq_postinstall(drm_device_t * dev) +{ + drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private; - I830_WRITE16( I830REG_INT_ENABLE_R, 0x2 ); + I830_WRITE16(I830REG_INT_ENABLE_R, 0x2); } -void i830_driver_irq_uninstall( drm_device_t *dev ) { - drm_i830_private_t *dev_priv = - (drm_i830_private_t *)dev->dev_private; +void i830_driver_irq_uninstall(drm_device_t * dev) +{ + drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private; if (!dev_priv) return; - I830_WRITE16( I830REG_INT_MASK_R, 0xffff ); - I830_WRITE16( I830REG_INT_ENABLE_R, 0x0 ); + I830_WRITE16(I830REG_INT_MASK_R, 0xffff); + I830_WRITE16(I830REG_INT_ENABLE_R, 0x0); }