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

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Diffstat (limited to 'shared-core/savage_drv.h')

0 files changed, 0 insertions, 0 deletions

/*- * Copyright 2003 Eric Anholt * 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 * ERIC ANHOLT 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: * Eric Anholt <anholt@FreeBSD.org> * */ /** @file drm_irq.c * Support code for handling setup/teardown of interrupt handlers and * handing interrupt handlers off to the drivers. */ #include "drmP.h" #include "drm.h" static void drm_locked_task(void *context, int pending __unused); int drm_irq_by_busid(drm_device_t *dev, void *data, struct drm_file *file_priv) { drm_irq_busid_t *irq = data; if ((irq->busnum >> 8) != dev->pci_domain || (irq->busnum & 0xff) != dev->pci_bus || irq->devnum != dev->pci_slot || irq->funcnum != dev->pci_func) return EINVAL; irq->irq = dev->irq; DRM_DEBUG("%d:%d:%d => IRQ %d\n", irq->busnum, irq->devnum, irq->funcnum, irq->irq); return 0; } #if defined(__FreeBSD__) && __FreeBSD_version >= 500000 static irqreturn_t drm_irq_handler_wrap(DRM_IRQ_ARGS) { drm_device_t *dev = (drm_device_t *)arg; DRM_SPINLOCK(&dev->irq_lock); dev->driver.irq_handler(arg); DRM_SPINUNLOCK(&dev->irq_lock); } #endif int drm_irq_install(drm_device_t *dev) { int retcode; #ifdef __NetBSD__ pci_intr_handle_t ih; #endif if (dev->irq == 0 || dev->dev_private == NULL) return EINVAL; DRM_DEBUG( "%s: irq=%d\n", __FUNCTION__, dev->irq ); DRM_LOCK(); if (dev->irq_enabled) { DRM_UNLOCK(); return EBUSY; } dev->irq_enabled = 1; dev->context_flag = 0; DRM_SPININIT(&dev->irq_lock, "DRM IRQ lock"); /* Before installing handler */ dev->driver.irq_preinstall(dev); DRM_UNLOCK(); /* Install handler */ #ifdef __FreeBSD__ dev->irqrid = 0; dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ, &dev->irqrid, RF_SHAREABLE); if (!dev->irqr) { retcode = ENOENT; goto err; } #if __FreeBSD_version >= 700031 retcode = bus_setup_intr(dev->device, dev->irqr, INTR_TYPE_TTY | INTR_MPSAFE, NULL, drm_irq_handler_wrap, dev, &dev->irqh); #else retcode = bus_setup_intr(dev->device, dev->irqr, INTR_TYPE_TTY | INTR_MPSAFE, drm_irq_handler_wrap, dev, &dev->irqh); #endif if (retcode != 0) goto err; #elif defined(__NetBSD__) || defined(__OpenBSD__) if (pci_intr_map(&dev->pa, &ih) != 0) { retcode = ENOENT; goto err; } dev->irqh = pci_intr_establish(&dev->pa.pa_pc, ih, IPL_TTY, (irqreturn_t (*)(void *))dev->irq_handler, dev); if (!dev->irqh) { retcode = ENOENT; goto err; } #endif /* After installing handler */ DRM_LOCK(); dev->driver.irq_postinstall(dev); DRM_UNLOCK(); TASK_INIT(&dev->locked_task, 0, drm_locked_task, dev); return 0; err: DRM_LOCK(); dev->irq_enabled = 0; #ifdef ___FreeBSD__ if (dev->irqrid != 0) { bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid, dev->irqr); dev->irqrid = 0; } #endif DRM_SPINUNINIT(&dev->irq_lock); DRM_UNLOCK(); return retcode; } int drm_irq_uninstall(drm_device_t *dev) { #ifdef __FreeBSD__ int irqrid; #endif if (!dev->irq_enabled) return EINVAL; dev->irq_enabled = 0; #ifdef __FreeBSD__ irqrid = dev->irqrid; dev->irqrid = 0; #endif DRM_DEBUG( "%s: irq=%d\n", __FUNCTION__, dev->irq ); dev->driver.irq_uninstall(dev); #ifdef __FreeBSD__ DRM_UNLOCK(); bus_teardown_intr(dev->device, dev->irqr, dev->irqh); bus_release_resource(dev->device, SYS_RES_IRQ, irqrid, dev->irqr); DRM_LOCK(); #elif defined(__NetBSD__) || defined(__OpenBSD__) pci_intr_disestablish(&dev->pa.pa_pc, dev->irqh); #endif DRM_SPINUNINIT(&dev->irq_lock); return 0; } int drm_control(drm_device_t *dev, void *data, struct drm_file *file_priv) { drm_control_t *ctl = data; int err; switch ( ctl->func ) { case DRM_INST_HANDLER: /* Handle drivers whose DRM used to require IRQ setup but the * no longer does. */ if (!dev->driver.use_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 (!dev->driver.use_irq) return 0; DRM_LOCK(); err = drm_irq_uninstall(dev); DRM_UNLOCK(); return err; default: return EINVAL; } } int drm_wait_vblank(drm_device_t *dev, void *data, struct drm_file *file_priv) { drm_wait_vblank_t *vblwait = data; struct timeval now; int ret, flags; if (!dev->irq_enabled) return EINVAL; if (vblwait->request.type & _DRM_VBLANK_RELATIVE) { vblwait->request.sequence += atomic_read(&dev->vbl_received); vblwait->request.type &= ~_DRM_VBLANK_RELATIVE; } flags = vblwait->request.type & _DRM_VBLANK_FLAGS_MASK; if (flags & _DRM_VBLANK_SIGNAL) { #if 0 /* disabled */ drm_vbl_sig_t *vbl_sig = malloc(sizeof(drm_vbl_sig_t), M_DRM, M_NOWAIT | M_ZERO); if (vbl_sig == NULL) return ENOMEM; vbl_sig->sequence = vblwait->request.sequence; vbl_sig->signo = vblwait->request.signal; vbl_sig->pid = DRM_CURRENTPID; vblwait->reply.sequence = atomic_read(&dev->vbl_received); DRM_SPINLOCK(&dev->irq_lock); TAILQ_INSERT_HEAD(&dev->vbl_sig_list, vbl_sig, link); DRM_SPINUNLOCK(&dev->irq_lock); ret = 0; #endif ret = EINVAL; } else { DRM_LOCK(); /* shared code returns -errno */ ret = -dev->driver.vblank_wait(dev, &vblwait->request.sequence); DRM_UNLOCK(); microtime(&now); vblwait->reply.tval_sec = now.tv_sec; vblwait->reply.tval_usec = now.tv_usec; } return ret; } void drm_vbl_send_signals(drm_device_t *dev) { } #if 0 /* disabled */ void drm_vbl_send_signals( drm_device_t *dev ) { drm_vbl_sig_t *vbl_sig; unsigned int vbl_seq = atomic_read( &dev->vbl_received ); struct proc *p; vbl_sig = TAILQ_FIRST(&dev->vbl_sig_list); while (vbl_sig != NULL) { drm_vbl_sig_t *next = TAILQ_NEXT(vbl_sig, link); if ( ( vbl_seq - vbl_sig->sequence ) <= (1<<23) ) { p = pfind(vbl_sig->pid); if (p != NULL) psignal(p, vbl_sig->signo); TAILQ_REMOVE(&dev->vbl_sig_list, vbl_sig, link); DRM_FREE(vbl_sig,sizeof(*vbl_sig)); } vbl_sig = next; } } #endif static void drm_locked_task(void *context, int pending __unused) { drm_device_t *dev = context; DRM_LOCK(); for (;;) { int ret; if (drm_lock_take(&dev->lock.hw_lock->lock, DRM_KERNEL_CONTEXT)) { dev->lock.file_priv = NULL; /* kernel owned */ dev->lock.lock_time = jiffies; atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); break; /* Got lock */ } /* Contention */ #if defined(__FreeBSD__) && __FreeBSD_version > 500000 ret = msleep((void *)&dev->lock.lock_queue, &dev->dev_lock, PZERO | PCATCH, "drmlk2", 0); #else ret = tsleep((void *)&dev->lock.lock_queue, PZERO | PCATCH, "drmlk2", 0); #endif if (ret != 0) return; } DRM_UNLOCK(); dev->locked_task_call(dev); drm_lock_free(dev, &dev->lock.hw_lock->lock, DRM_KERNEL_CONTEXT); } void drm_locked_tasklet(drm_device_t *dev, void (*tasklet)(drm_device_t *dev)) { dev->locked_task_call = tasklet; taskqueue_enqueue(taskqueue_swi, &dev->locked_task); }


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