From 6677e2a10b820a5ccfd375cc627b8e41453a71da Mon Sep 17 00:00:00 2001 From: Adam Jackson Date: Wed, 19 Jul 2006 16:19:25 -0400 Subject: Delete the pre-core DRM code with extreme prejudice. --- linux/drm_irq.h | 367 -------------------------------------------------------- 1 file changed, 367 deletions(-) delete mode 100644 linux/drm_irq.h (limited to 'linux/drm_irq.h') diff --git a/linux/drm_irq.h b/linux/drm_irq.h deleted file mode 100644 index e0f803cf..00000000 --- a/linux/drm_irq.h +++ /dev/null @@ -1,367 +0,0 @@ -/** - * \file drm_irq.h - * IRQ support - * - * \author Rickard E. (Rik) Faith - * \author Gareth Hughes - */ - -/* - * Created: Fri Mar 19 14:30:16 1999 by faith@valinux.com - * - * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas. - * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. - * 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 - * VA LINUX SYSTEMS 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. - */ - -#include "drmP.h" - -#include /* For task queue support */ - -/** - * Get interrupt from bus id. - * - * \param inode device inode. - * \param filp file pointer. - * \param cmd command. - * \param arg user argument, pointing to a drm_irq_busid structure. - * \return zero on success or a negative number on failure. - * - * Finds the PCI device with the specified bus id and gets its IRQ number. - * This IOCTL is deprecated, and will now return EINVAL for any busid not equal - * to that of the device that this DRM instance attached to. - */ -int DRM(irq_by_busid)(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_irq_busid_t __user *argp = (void __user *)arg; - drm_irq_busid_t p; - - if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) - return -EINVAL; - - if (copy_from_user(&p, argp, sizeof(p))) - return -EFAULT; - - if ((p.busnum >> 8) != dev->pci_domain || - (p.busnum & 0xff) != dev->pci_bus || - p.devnum != dev->pci_slot || - p.funcnum != dev->pci_func) - return -EINVAL; - - p.irq = dev->irq; - - DRM_DEBUG("%d:%d:%d => IRQ %d\n", - p.busnum, p.devnum, p.funcnum, p.irq); - if (copy_to_user(argp, &p, sizeof(p))) - return -EFAULT; - return 0; -} - -/** - * Install IRQ handler. - * - * \param dev DRM device. - * - * Initializes the IRQ related data, and setups drm_device::vbl_queue. Installs the handler, calling the driver - * \c DRM(driver_irq_preinstall)() and \c DRM(driver_irq_postinstall)() functions - * before and after the installation. - */ -int DRM(irq_install)( drm_device_t *dev ) -{ - int ret; - unsigned long sh_flags=0; - - if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) - return -EINVAL; - - if ( dev->irq == 0 ) - return -EINVAL; - - down( &dev->struct_sem ); - - /* Driver must have been initialized */ - if ( !dev->dev_private ) { - up( &dev->struct_sem ); - return -EINVAL; - } - - if ( dev->irq_enabled ) { - up( &dev->struct_sem ); - return -EBUSY; - } - dev->irq_enabled = 1; - up( &dev->struct_sem ); - - DRM_DEBUG( "%s: irq=%d\n", __FUNCTION__, dev->irq ); - - if (drm_core_check_feature(dev, DRIVER_IRQ_VBL)) { - init_waitqueue_head(&dev->vbl_queue); - - spin_lock_init( &dev->vbl_lock ); - - INIT_LIST_HEAD( &dev->vbl_sigs.head ); - - dev->vbl_pending = 0; - } - - /* Before installing handler */ - dev->fn_tbl.irq_preinstall(dev); - - /* Install handler */ - if (drm_core_check_feature(dev, DRIVER_IRQ_SHARED)) - sh_flags = SA_SHIRQ; - - ret = request_irq( dev->irq, dev->fn_tbl.irq_handler, - sh_flags, dev->devname, dev ); - if ( ret < 0 ) { - down( &dev->struct_sem ); - dev->irq_enabled = 0; - up( &dev->struct_sem ); - return ret; - } - - /* After installing handler */ - dev->fn_tbl.irq_postinstall(dev); - - return 0; -} - -/** - * Uninstall the IRQ handler. - * - * \param dev DRM device. - * - * Calls the driver's \c DRM(driver_irq_uninstall)() function, and stops the irq. - */ -int DRM(irq_uninstall)( drm_device_t *dev ) -{ - int irq_enabled; - - if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) - return -EINVAL; - - down( &dev->struct_sem ); - irq_enabled = dev->irq_enabled; - dev->irq_enabled = 0; - up( &dev->struct_sem ); - - if ( !irq_enabled ) - return -EINVAL; - - DRM_DEBUG( "%s: irq=%d\n", __FUNCTION__, dev->irq ); - - dev->fn_tbl.irq_uninstall(dev); - - free_irq( dev->irq, dev ); - - return 0; -} - -/** - * IRQ control ioctl. - * - * \param inode device inode. - * \param filp file pointer. - * \param cmd command. - * \param arg user argument, pointing to a drm_control structure. - * \return zero on success or a negative number on failure. - * - * Calls irq_install() or irq_uninstall() according to \p arg. - */ -int DRM(control)( 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_control_t ctl; - - /* if we haven't irq we fallback for compatibility reasons - this used to be a separate function in drm_dma.h */ - - if ( copy_from_user( &ctl, (drm_control_t __user *)arg, sizeof(ctl) ) ) - return -EFAULT; - - switch ( ctl.func ) { - case DRM_INST_HANDLER: - if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) - return 0; - if (dev->if_version < DRM_IF_VERSION(1, 2) && - ctl.irq != dev->irq) - return -EINVAL; - return DRM(irq_install)( dev ); - case DRM_UNINST_HANDLER: - if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) - return 0; - return DRM(irq_uninstall)( dev ); - default: - return -EINVAL; - } -} - -/** - * Wait for VBLANK. - * - * \param inode device inode. - * \param filp file pointer. - * \param cmd command. - * \param data user argument, pointing to a drm_wait_vblank structure. - * \return zero on success or a negative number on failure. - * - * Verifies the IRQ is installed. - * - * If a signal is requested checks if this task has already scheduled the same signal - * for the same vblank sequence number - nothing to be done in - * that case. If the number of tasks waiting for the interrupt exceeds 100 the - * function fails. Otherwise adds a new entry to drm_device::vbl_sigs for this - * task. - * - * If a signal is not requested, then calls vblank_wait(). - */ -int DRM(wait_vblank)( DRM_IOCTL_ARGS ) -{ - drm_file_t *priv = filp->private_data; - drm_device_t *dev = priv->dev; - drm_wait_vblank_t __user *argp = (void __user *)data; - drm_wait_vblank_t vblwait; - struct timeval now; - int ret = 0; - unsigned int flags; - - if (!drm_core_check_feature(dev, DRIVER_IRQ_VBL)) - return -EINVAL; - - if (!dev->irq) - return -EINVAL; - - DRM_COPY_FROM_USER_IOCTL( vblwait, argp, sizeof(vblwait) ); - - switch ( vblwait.request.type & ~_DRM_VBLANK_FLAGS_MASK ) { - case _DRM_VBLANK_RELATIVE: - vblwait.request.sequence += atomic_read( &dev->vbl_received ); - vblwait.request.type &= ~_DRM_VBLANK_RELATIVE; - case _DRM_VBLANK_ABSOLUTE: - break; - default: - return -EINVAL; - } - - flags = vblwait.request.type & _DRM_VBLANK_FLAGS_MASK; - - if ( flags & _DRM_VBLANK_SIGNAL ) { - unsigned long irqflags; - drm_vbl_sig_t *vbl_sig; - - vblwait.reply.sequence = atomic_read( &dev->vbl_received ); - - spin_lock_irqsave( &dev->vbl_lock, irqflags ); - - /* Check if this task has already scheduled the same signal - * for the same vblank sequence number; nothing to be done in - * that case - */ - list_for_each_entry( vbl_sig, &dev->vbl_sigs.head, head ) { - if (vbl_sig->sequence == vblwait.request.sequence - && vbl_sig->info.si_signo == vblwait.request.signal - && vbl_sig->task == current) - { - spin_unlock_irqrestore( &dev->vbl_lock, irqflags ); - goto done; - } - } - - if ( dev->vbl_pending >= 100 ) { - spin_unlock_irqrestore( &dev->vbl_lock, irqflags ); - return -EBUSY; - } - - dev->vbl_pending++; - - spin_unlock_irqrestore( &dev->vbl_lock, irqflags ); - - if ( !( vbl_sig = DRM(alloc)( sizeof( drm_vbl_sig_t ), DRM_MEM_DRIVER ) ) ) { - return -ENOMEM; - } - - memset( (void *)vbl_sig, 0, sizeof(*vbl_sig) ); - - vbl_sig->sequence = vblwait.request.sequence; - vbl_sig->info.si_signo = vblwait.request.signal; - vbl_sig->task = current; - - spin_lock_irqsave( &dev->vbl_lock, irqflags ); - - list_add_tail( (struct list_head *) vbl_sig, &dev->vbl_sigs.head ); - - spin_unlock_irqrestore( &dev->vbl_lock, irqflags ); - } else { - if (dev->fn_tbl.vblank_wait) - ret = dev->fn_tbl.vblank_wait( dev, &vblwait.request.sequence ); - - do_gettimeofday( &now ); - vblwait.reply.tval_sec = now.tv_sec; - vblwait.reply.tval_usec = now.tv_usec; - } - -done: - DRM_COPY_TO_USER_IOCTL( argp, vblwait, sizeof(vblwait) ); - - return ret; -} - -/** - * Send the VBLANK signals. - * - * \param dev DRM device. - * - * Sends a signal for each task in drm_device::vbl_sigs and empties the list. - * - * If a signal is not requested, then calls vblank_wait(). - */ -void DRM(vbl_send_signals)( drm_device_t *dev ) -{ - struct list_head *list, *tmp; - drm_vbl_sig_t *vbl_sig; - unsigned int vbl_seq = atomic_read( &dev->vbl_received ); - unsigned long flags; - - spin_lock_irqsave( &dev->vbl_lock, flags ); - - list_for_each_safe( list, tmp, &dev->vbl_sigs.head ) { - vbl_sig = list_entry( list, drm_vbl_sig_t, head ); - if ( ( vbl_seq - vbl_sig->sequence ) <= (1<<23) ) { - vbl_sig->info.si_code = vbl_seq; - send_sig_info( vbl_sig->info.si_signo, &vbl_sig->info, vbl_sig->task ); - - list_del( list ); - - DRM(free)( vbl_sig, sizeof(*vbl_sig), DRM_MEM_DRIVER ); - - dev->vbl_pending--; - } - } - - spin_unlock_irqrestore( &dev->vbl_lock, flags ); -} - - -- cgit v1.2.3