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-rw-r--r--bsd/tdfx/tdfx_drv.c694
1 files changed, 694 insertions, 0 deletions
diff --git a/bsd/tdfx/tdfx_drv.c b/bsd/tdfx/tdfx_drv.c
new file mode 100644
index 00000000..573cfcf1
--- /dev/null
+++ b/bsd/tdfx/tdfx_drv.c
@@ -0,0 +1,694 @@
+/* tdfx.c -- tdfx driver -*- c -*-
+ * Created: Thu Oct 7 10:38:32 1999 by faith@precisioninsight.com
+ * Revised: Tue Oct 12 08:51:35 1999 by faith@precisioninsight.com
+ *
+ * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
+ * 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
+ * PRECISION INSIGHT 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.
+ *
+ * $PI$
+ * $XFree86$
+ *
+ */
+
+#include "drmP.h"
+#include "tdfx_drv.h"
+
+#include <pci/pcivar.h>
+
+MODULE_DEPEND(tdfx, drm, 1, 1, 1);
+
+#define TDFX_NAME "tdfx"
+#define TDFX_DESC "tdfx"
+#define TDFX_DATE "19991009"
+#define TDFX_MAJOR 0
+#define TDFX_MINOR 0
+#define TDFX_PATCHLEVEL 1
+
+static int tdfx_init(device_t nbdev);
+static void tdfx_cleanup(device_t nbdev);
+
+drm_ctx_t tdfx_res_ctx;
+
+static int tdfx_probe(device_t dev)
+{
+ const char *s = 0;
+
+ switch (pci_get_devid(dev)) {
+ case 0x0003121a:
+ s = "3Dfx Voodoo Banshee graphics accelerator";
+ break;
+
+ case 0x0005121a:
+ s = "3Dfx Voodoo 3 graphics accelerator";
+ break;
+ }
+
+ if (s) {
+ device_set_desc(dev, s);
+ return 0;
+ }
+
+ return ENXIO;
+}
+
+static int tdfx_attach(device_t dev)
+{
+ tdfx_init(dev);
+ return 0;
+}
+
+static int tdfx_detach(device_t dev)
+{
+ tdfx_cleanup(dev);
+ return 0;
+}
+
+static device_method_t tdfx_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, tdfx_probe),
+ DEVMETHOD(device_attach, tdfx_attach),
+ DEVMETHOD(device_detach, tdfx_detach),
+
+ { 0, 0 }
+};
+
+static driver_t tdfx_driver = {
+ "drm",
+ tdfx_methods,
+ sizeof(drm_device_t),
+};
+
+static devclass_t tdfx_devclass;
+#define TDFX_SOFTC(unit) \
+ ((drm_device_t *) devclass_get_softc(tdfx_devclass, unit))
+
+DRIVER_MODULE(if_tdfx, pci, tdfx_driver, tdfx_devclass, 0, 0);
+
+#define CDEV_MAJOR 145
+ /* tdfx_drv.c */
+static d_open_t tdfx_open;
+static d_close_t tdfx_close;
+static d_ioctl_t tdfx_version;
+static d_ioctl_t tdfx_ioctl;
+static d_ioctl_t tdfx_lock;
+static d_ioctl_t tdfx_unlock;
+
+static struct cdevsw tdfx_cdevsw = {
+ /* open */ tdfx_open,
+ /* close */ tdfx_close,
+ /* read */ drm_read,
+ /* write */ drm_write,
+ /* ioctl */ tdfx_ioctl,
+ /* poll */ drm_poll,
+ /* mmap */ drm_mmap,
+ /* strategy */ nostrategy,
+ /* name */ "tdfx",
+ /* maj */ CDEV_MAJOR,
+ /* dump */ nodump,
+ /* psize */ nopsize,
+ /* flags */ D_TTY | D_TRACKCLOSE,
+ /* bmaj */ -1
+};
+
+static drm_ioctl_desc_t tdfx_ioctls[] = {
+ [DRM_IOCTL_NR(DRM_IOCTL_VERSION)] = { tdfx_version, 0, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE)] = { drm_getunique, 0, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_GET_MAGIC)] = { drm_getmagic, 0, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_IRQ_BUSID)] = { drm_irq_busid, 0, 1 },
+
+ [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE)] = { drm_setunique, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_BLOCK)] = { drm_block, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)] = { drm_unblock, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_AUTH_MAGIC)] = { drm_authmagic, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP)] = { drm_addmap, 1, 1 },
+
+ [DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)] = { tdfx_addctx, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)] = { tdfx_rmctx, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)] = { tdfx_modctx, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)] = { tdfx_getctx, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)] = { tdfx_switchctx, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)] = { tdfx_newctx, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)] = { tdfx_resctx, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_ADD_DRAW)] = { drm_adddraw, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_RM_DRAW)] = { drm_rmdraw, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_LOCK)] = { tdfx_lock, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)] = { tdfx_unlock, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_FINISH)] = { drm_finish, 1, 0 },
+};
+#define TDFX_IOCTL_COUNT DRM_ARRAY_SIZE(tdfx_ioctls)
+
+static int
+tdfx_setup(drm_device_t *dev)
+{
+ int i;
+
+ device_busy(dev->device);
+
+ atomic_set(&dev->ioctl_count, 0);
+ atomic_set(&dev->vma_count, 0);
+ dev->buf_use = 0;
+ atomic_set(&dev->buf_alloc, 0);
+
+ atomic_set(&dev->total_open, 0);
+ atomic_set(&dev->total_close, 0);
+ atomic_set(&dev->total_ioctl, 0);
+ atomic_set(&dev->total_irq, 0);
+ atomic_set(&dev->total_ctx, 0);
+ atomic_set(&dev->total_locks, 0);
+ atomic_set(&dev->total_unlocks, 0);
+ atomic_set(&dev->total_contends, 0);
+ atomic_set(&dev->total_sleeps, 0);
+
+ for (i = 0; i < DRM_HASH_SIZE; i++) {
+ dev->magiclist[i].head = NULL;
+ dev->magiclist[i].tail = NULL;
+ }
+ dev->maplist = NULL;
+ dev->map_count = 0;
+ dev->vmalist = NULL;
+ dev->lock.hw_lock = NULL;
+ dev->lock.lock_queue = 0;
+ dev->queue_count = 0;
+ dev->queue_reserved = 0;
+ dev->queue_slots = 0;
+ dev->queuelist = NULL;
+ dev->irq = 0;
+ dev->context_flag = 0;
+ dev->interrupt_flag = 0;
+ dev->dma = 0;
+ dev->dma_flag = 0;
+ dev->last_context = 0;
+ dev->last_switch = 0;
+ dev->last_checked = 0;
+ callout_init(&dev->timer);
+ dev->context_wait = 0;
+
+ timespecclear(&dev->ctx_start);
+ timespecclear(&dev->lck_start);
+
+ dev->buf_rp = dev->buf;
+ dev->buf_wp = dev->buf;
+ dev->buf_end = dev->buf + DRM_BSZ;
+ bzero(&dev->buf_sel, sizeof dev->buf_sel);
+ dev->buf_sigio = NULL;
+ dev->buf_readers = 0;
+ dev->buf_writers = 0;
+ dev->buf_selecting = 0;
+
+ tdfx_res_ctx.handle=-1;
+
+ DRM_DEBUG("\n");
+
+ /* The kernel's context could be created here, but is now created
+ in drm_dma_enqueue. This is more resource-efficient for
+ hardware that does not do DMA, but may mean that
+ drm_select_queue fails between the time the interrupt is
+ initialized and the time the queues are initialized. */
+
+ return 0;
+}
+
+
+static int
+tdfx_takedown(drm_device_t *dev)
+{
+ int i;
+ drm_magic_entry_t *pt, *next;
+ drm_map_t *map;
+ drm_vma_entry_t *vma, *vma_next;
+
+ DRM_DEBUG("\n");
+
+ lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, curproc);
+ callout_stop(&dev->timer);
+
+ if (dev->devname) {
+ drm_free(dev->devname, strlen(dev->devname)+1, DRM_MEM_DRIVER);
+ dev->devname = NULL;
+ }
+
+ if (dev->unique) {
+ drm_free(dev->unique, strlen(dev->unique)+1, DRM_MEM_DRIVER);
+ dev->unique = NULL;
+ dev->unique_len = 0;
+ }
+ /* Clear pid list */
+ for (i = 0; i < DRM_HASH_SIZE; i++) {
+ for (pt = dev->magiclist[i].head; pt; pt = next) {
+ next = pt->next;
+ drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
+ }
+ dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
+ }
+
+ /* Clear vma list (only built for debugging) */
+ if (dev->vmalist) {
+ for (vma = dev->vmalist; vma; vma = vma_next) {
+ vma_next = vma->next;
+ drm_free(vma, sizeof(*vma), DRM_MEM_VMAS);
+ }
+ dev->vmalist = NULL;
+ }
+
+ /* Clear map area and mtrr information */
+ if (dev->maplist) {
+ for (i = 0; i < dev->map_count; i++) {
+ map = dev->maplist[i];
+ switch (map->type) {
+ case _DRM_REGISTERS:
+ case _DRM_FRAME_BUFFER:
+#ifdef CONFIG_MTRR
+ if (map->mtrr >= 0) {
+ int retcode;
+ retcode = mtrr_del(map->mtrr,
+ map->offset,
+ map->size);
+ DRM_DEBUG("mtrr_del = %d\n", retcode);
+ }
+#endif
+ drm_ioremapfree(map->handle, map->size);
+ break;
+ case _DRM_SHM:
+ drm_free_pages((unsigned long)map->handle,
+ drm_order(map->size)
+ - PAGE_SHIFT,
+ DRM_MEM_SAREA);
+ break;
+ case _DRM_AGP:
+ break; /* XXX */
+ }
+ drm_free(map, sizeof(*map), DRM_MEM_MAPS);
+ }
+ drm_free(dev->maplist,
+ dev->map_count * sizeof(*dev->maplist),
+ DRM_MEM_MAPS);
+ dev->maplist = NULL;
+ dev->map_count = 0;
+ }
+
+ if (dev->lock.hw_lock) {
+ dev->lock.hw_lock = NULL; /* SHM removed */
+ dev->lock.pid = 0;
+ wakeup(&dev->lock.lock_queue);
+ }
+ lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc);
+
+ device_unbusy(dev->device);
+
+ return 0;
+}
+
+/* tdfx_init is called via tdfx_attach at module load time, */
+
+static int
+tdfx_init(device_t nbdev)
+{
+ drm_device_t *dev = device_get_softc(nbdev);
+
+ DRM_DEBUG("\n");
+
+ memset((void *)dev, 0, sizeof(*dev));
+ simple_lock_init(&dev->count_lock);
+ lockinit(&dev->dev_lock, PZERO, "drmlk", 0, 0);
+
+#if 0
+ drm_parse_options(tdfx);
+#endif
+
+ dev->device = nbdev;
+ dev->devnode = make_dev(&tdfx_cdevsw,
+ device_get_unit(nbdev),
+ DRM_DEV_UID,
+ DRM_DEV_GID,
+ DRM_DEV_MODE,
+ TDFX_NAME);
+ dev->name = TDFX_NAME;
+
+ drm_mem_init();
+ drm_sysctl_init(dev);
+ TAILQ_INIT(&dev->files);
+
+ DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
+ TDFX_NAME,
+ TDFX_MAJOR,
+ TDFX_MINOR,
+ TDFX_PATCHLEVEL,
+ TDFX_DATE,
+ device_get_unit(nbdev));
+
+ return 0;
+}
+
+/* tdfx_cleanup is called via tdfx_detach at module unload time. */
+
+static void
+tdfx_cleanup(device_t nbdev)
+{
+ drm_device_t *dev = device_get_softc(nbdev);
+
+ DRM_DEBUG("\n");
+
+ drm_sysctl_cleanup(dev);
+ destroy_dev(dev->devnode);
+
+ DRM_INFO("Module unloaded\n");
+
+ device_busy(dev->device);
+ tdfx_takedown(dev);
+}
+
+static int
+tdfx_version(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
+{
+ drm_version_t version;
+ int len;
+
+ version = *(drm_version_t *) data;
+
+#define DRM_COPY(name,value) \
+ len = strlen(value); \
+ if (len > name##_len) len = name##_len; \
+ name##_len = strlen(value); \
+ if (len && name) { \
+ int error = copyout(value, name, len); \
+ if (error) return error; \
+ }
+
+ version.version_major = TDFX_MAJOR;
+ version.version_minor = TDFX_MINOR;
+ version.version_patchlevel = TDFX_PATCHLEVEL;
+
+ DRM_COPY(version.name, TDFX_NAME);
+ DRM_COPY(version.date, TDFX_DATE);
+ DRM_COPY(version.desc, TDFX_DESC);
+
+ *(drm_version_t *) data = version;
+ return 0;
+}
+
+static int
+tdfx_open(dev_t kdev, int flags, int fmt, struct proc *p)
+{
+ drm_device_t *dev = TDFX_SOFTC(minor(kdev));
+ int retcode = 0;
+
+ DRM_DEBUG("open_count = %d\n", dev->open_count);
+
+ device_busy(dev->device);
+ if (!(retcode = drm_open_helper(kdev, flags, fmt, p, dev))) {
+ atomic_inc(&dev->total_open);
+ simple_lock(&dev->count_lock);
+ if (!dev->open_count++) {
+ simple_unlock(&dev->count_lock);
+ retcode = tdfx_setup(dev);
+ }
+ simple_unlock(&dev->count_lock);
+ }
+ device_unbusy(dev->device);
+
+ return retcode;
+}
+
+static int
+tdfx_close(dev_t kdev, int flags, int fmt, struct proc *p)
+{
+ drm_device_t *dev = kdev->si_drv1;
+ int retcode = 0;
+
+ DRM_DEBUG("open_count = %d\n", dev->open_count);
+ if (!(retcode = drm_close(kdev, flags, fmt, p))) {
+ atomic_inc(&dev->total_close);
+ simple_lock(&dev->count_lock);
+ if (!--dev->open_count) {
+ if (atomic_read(&dev->ioctl_count) || dev->blocked) {
+ DRM_ERROR("Device busy: %d %d\n",
+ atomic_read(&dev->ioctl_count),
+ dev->blocked);
+ simple_unlock(&dev->count_lock);
+ return EBUSY;
+ }
+ simple_unlock(&dev->count_lock);
+ return tdfx_takedown(dev);
+ }
+ simple_unlock(&dev->count_lock);
+ }
+
+ return retcode;
+}
+
+/* tdfx_ioctl is called whenever a process performs an ioctl on /dev/drm. */
+
+static int
+tdfx_ioctl(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
+{
+ int nr = DRM_IOCTL_NR(cmd);
+ drm_device_t *dev = kdev->si_drv1;
+ drm_file_t *priv;
+ int retcode = 0;
+ drm_ioctl_desc_t *ioctl;
+ d_ioctl_t *func;
+
+ DRM_DEBUG("dev=%p\n", dev);
+ priv = drm_find_file_by_proc(dev, p);
+ if (!priv) {
+ DRM_DEBUG("can't find authenticator\n");
+ return EINVAL;
+ }
+
+ atomic_inc(&dev->ioctl_count);
+ atomic_inc(&dev->total_ioctl);
+ ++priv->ioctl_count;
+
+ DRM_DEBUG("pid = %d, cmd = 0x%02lx, nr = 0x%02x, auth = %d\n",
+ p->p_pid, cmd, nr, priv->authenticated);
+
+ switch (cmd) {
+ case FIONBIO:
+ atomic_dec(&dev->ioctl_count);
+ return 0;
+
+ case FIOASYNC:
+ atomic_dec(&dev->ioctl_count);
+ dev->flags |= FASYNC;
+ return 0;
+
+ case FIOSETOWN:
+ atomic_dec(&dev->ioctl_count);
+ return fsetown(*(int *)data, &dev->buf_sigio);
+
+ case FIOGETOWN:
+ atomic_dec(&dev->ioctl_count);
+ *(int *) data = fgetown(dev->buf_sigio);
+ return 0;
+ }
+
+ if (nr >= TDFX_IOCTL_COUNT) {
+ retcode = EINVAL;
+ } else {
+ ioctl = &tdfx_ioctls[nr];
+ func = ioctl->func;
+
+ if (!func) {
+ DRM_DEBUG("no function\n");
+ retcode = EINVAL;
+ } else if ((ioctl->root_only && suser(p))
+ || (ioctl->auth_needed && !priv->authenticated)) {
+ retcode = EACCES;
+ } else {
+ retcode = (func)(kdev, cmd, data, flags, p);
+ }
+ }
+
+ atomic_dec(&dev->ioctl_count);
+ return retcode;
+}
+
+static int
+tdfx_lock(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
+{
+ drm_device_t *dev = kdev->si_drv1;
+ int ret = 0;
+ drm_lock_t lock;
+#if DRM_DMA_HISTOGRAM
+
+ getnanotime(&dev->lck_start);
+#endif
+
+ lock = *(drm_lock_t *) data;
+
+ if (lock.context == DRM_KERNEL_CONTEXT) {
+ DRM_ERROR("Process %d using kernel context %d\n",
+ p->p_pid, lock.context);
+ return EINVAL;
+ }
+
+ DRM_DEBUG("%d (pid %d) requests lock (0x%08x), flags = 0x%08x\n",
+ lock.context, p->p_pid, dev->lock.hw_lock->lock,
+ lock.flags);
+
+#if 0
+ /* dev->queue_count == 0 right now for
+ tdfx. FIXME? */
+ if (lock.context < 0 || lock.context >= dev->queue_count)
+ return EINVAL;
+#endif
+
+ if (!ret) {
+#if 0
+ if (_DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)
+ != lock.context) {
+ long j = ticks - dev->lock.lock_time;
+
+ if (lock.context == tdfx_res_ctx.handle &&
+ j >= 0 && j < DRM_LOCK_SLICE) {
+ /* Can't take lock if we just had it and
+ there is contention. */
+ DRM_DEBUG("%d (pid %d) delayed j=%d dev=%d ticks=%d\n",
+ lock.context, p->p_pid, j,
+ dev->lock.lock_time, ticks);
+ ret = tsleep(&never, PZERO|PCATCH, "drmlk1",
+ DRM_LOCK_SLICE - j);
+ if (ret)
+ return ret;
+ DRM_DEBUG("ticks=%d\n", ticks);
+ }
+ }
+#endif
+ for (;;) {
+ if (!dev->lock.hw_lock) {
+ /* Device has been unregistered */
+ ret = EINTR;
+ break;
+ }
+ if (drm_lock_take(&dev->lock.hw_lock->lock,
+ lock.context)) {
+ dev->lock.pid = p->p_pid;
+ dev->lock.lock_time = ticks;
+ atomic_inc(&dev->total_locks);
+ break; /* Got lock */
+ }
+
+ /* Contention */
+ atomic_inc(&dev->total_sleeps);
+ ret = tsleep(&dev->lock.lock_queue,
+ PZERO|PCATCH,
+ "drmlk2",
+ 0);
+ if (ret)
+ break;
+ }
+ }
+
+#if 0
+ if (!ret && dev->last_context != lock.context &&
+ lock.context != tdfx_res_ctx.handle &&
+ dev->last_context != tdfx_res_ctx.handle) {
+ add_wait_queue(&dev->context_wait, &entry);
+ current->state = TASK_INTERRUPTIBLE;
+ /* PRE: dev->last_context != lock.context */
+ tdfx_context_switch(dev, dev->last_context, lock.context);
+ /* POST: we will wait for the context
+ switch and will dispatch on a later call
+ when dev->last_context == lock.context
+ NOTE WE HOLD THE LOCK THROUGHOUT THIS
+ TIME! */
+ current->policy |= SCHED_YIELD;
+ schedule();
+ current->state = TASK_RUNNING;
+ remove_wait_queue(&dev->context_wait, &entry);
+ if (signal_pending(current)) {
+ ret = EINTR;
+ } else if (dev->last_context != lock.context) {
+ DRM_ERROR("Context mismatch: %d %d\n",
+ dev->last_context, lock.context);
+ }
+ }
+#endif
+
+ if (!ret) {
+ if (lock.flags & _DRM_LOCK_READY) {
+ /* Wait for space in DMA/FIFO */
+ }
+ if (lock.flags & _DRM_LOCK_QUIESCENT) {
+ /* Make hardware quiescent */
+#if 0
+ tdfx_quiescent(dev);
+#endif
+ }
+ }
+
+#if 0
+ DRM_ERROR("pid = %5d, old counter = %5ld\n",
+ p->p_pid, current->counter);
+#endif
+#if 0
+ while (current->counter > 25)
+ current->counter >>= 1; /* decrease time slice */
+ DRM_ERROR("pid = %5d, new counter = %5ld\n",
+ p->p_pid, current->counter);
+#endif
+ DRM_DEBUG("%d %s\n", lock.context, ret ? "interrupted" : "has lock");
+
+#if DRM_DMA_HISTOGRAM
+ {
+ struct timespec ts;
+ getnanotime(&ts);
+ timespecsub(&ts, &dev->lck_start);
+ atomic_inc(&dev->histo.lhld[drm_histogram_slot(&ts)]);
+ }
+#endif
+
+ return ret;
+}
+
+
+static int
+tdfx_unlock(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
+{
+ drm_device_t *dev = kdev->si_drv1;
+ drm_lock_t lock;
+
+ lock = *(drm_lock_t *) data;
+
+ if (lock.context == DRM_KERNEL_CONTEXT) {
+ DRM_ERROR("Process %d using kernel context %d\n",
+ p->p_pid, lock.context);
+ return EINVAL;
+ }
+
+ DRM_DEBUG("%d frees lock (%d holds)\n",
+ lock.context,
+ _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
+ atomic_inc(&dev->total_unlocks);
+ if (_DRM_LOCK_IS_CONT(dev->lock.hw_lock->lock))
+ atomic_inc(&dev->total_contends);
+ drm_lock_transfer(dev, &dev->lock.hw_lock->lock, DRM_KERNEL_CONTEXT);
+ /* FIXME: Try to send data to card here */
+ if (!dev->context_flag) {
+ if (drm_lock_free(dev, &dev->lock.hw_lock->lock,
+ DRM_KERNEL_CONTEXT)) {
+ DRM_ERROR("\n");
+ }
+ }
+
+ return 0;
+}
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