renesas/drm.git - libdrm, cloned from git://anongit.freedesktop.org/mesa/drm

Age	Commit message (Expand)	Author
2006-01-02	complete fix for attribution	Dave Airlie
2005-02-01	cleanup patch from Adrian Bunk <bunk@stusta.de>	Dave Airlie
2004-11-01	correct historic mis-attribution of copyright	Keith Whitwell
2004-09-30	Lindent of core build. Drivers checked for no binary diffs. A few files	Jon Smirl
2004-09-27	First check in for DRM that splits core from personality modules	Jon Smirl
2004-07-15	sparse cleanups from kernel: Al Viro	Dave Airlie
2003-08-29	Port the SiS DRM to FreeBSD. This includes the ability for the DRM to	Eric Anholt

/* i830_dma.c -- DMA support for the I830 -*- linux-c -*- * * Copyright 2002 Tungsten Graphics, Inc. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * 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 * TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. * * Authors: Keith Whitwell <keith@tungstengraphics.com> * */ #include "drmP.h" #include "drm.h" #include "i830_drm.h" #include "i830_drv.h" #include <linux/interrupt.h> /* For task queue support */ #include <linux/delay.h> 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; temp = I830_READ16(I830REG_INT_IDENTITY_R); DRM_DEBUG("%x\n", temp); if (!(temp & 2)) return IRQ_NONE; I830_WRITE16(I830REG_INT_IDENTITY_R, temp); atomic_inc(&dev_priv->irq_received); wake_up_interruptible(&dev_priv->irq_queue); return IRQ_HANDLED; } static int i830_emit_irq(drm_device_t * dev) { drm_i830_private_t *dev_priv = dev->dev_private; RING_LOCALS; DRM_DEBUG("%s\n", __FUNCTION__); atomic_inc(&dev_priv->irq_emitted); BEGIN_LP_RING(2); OUT_RING(0); OUT_RING(GFX_OP_USER_INTERRUPT); ADVANCE_LP_RING(); return atomic_read(&dev_priv->irq_emitted); } 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; DECLARE_WAITQUEUE(entry, current); 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; dev_priv->sarea_priv->perf_boxes |= I830_BOX_WAIT; add_wait_queue(&dev_priv->irq_queue, &entry); for (;;) { __set_current_state(TASK_INTERRUPTIBLE); 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)); ret = -EBUSY; /* Lockup? Missed irq? */ break; } schedule_timeout(HZ * 3); if (signal_pending(current)) { ret = -EINTR; break; } } __set_current_state(TASK_RUNNING); remove_wait_queue(&dev_priv->irq_queue, &entry); 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) { 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; LOCK_TEST_WITH_RETURN(dev, filp); 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))) return -EFAULT; result = i830_emit_irq(dev); 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) { 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__); return -EINVAL; } if (copy_from_user(&irqwait, (drm_i830_irq_wait_t __user *) arg, sizeof(irqwait))) return -EFAULT; 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; 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; 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; if (!dev_priv) return; I830_WRITE16(I830REG_INT_MASK_R, 0xffff); I830_WRITE16(I830REG_INT_ENABLE_R, 0x0); }