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-rw-r--r--bsd/mga/mga_drv.c714
1 files changed, 714 insertions, 0 deletions
diff --git a/bsd/mga/mga_drv.c b/bsd/mga/mga_drv.c
new file mode 100644
index 00000000..09937201
--- /dev/null
+++ b/bsd/mga/mga_drv.c
@@ -0,0 +1,714 @@
+/* mga_drv.c -- Matrox g200/g400 driver
+ * Created: Mon Dec 13 01:56:22 1999 by jhartmann@precisioninsight.com
+ *
+ * Copyright 1999 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
+ * 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.
+ *
+ * Authors: Rickard E. (Rik) Faith <faith@valinux.com>
+ * Jeff Hartmann <jhartmann@valinux.com>
+ *
+ *
+ */
+
+#include "drmP.h"
+#include "mga_drv.h"
+
+#include <pci/pcivar.h>
+
+MODULE_DEPEND(mga, drm, 1, 1, 1);
+MODULE_DEPEND(mga, agp, 1, 1, 1);
+
+#define MGA_NAME "mga"
+#define MGA_DESC "Matrox g200/g400"
+#define MGA_DATE "19991213"
+#define MGA_MAJOR 1
+#define MGA_MINOR 0
+#define MGA_PATCHLEVEL 0
+
+drm_ctx_t mga_res_ctx;
+
+static int mga_probe(device_t dev)
+{
+ const char *s = 0;
+
+ switch (pci_get_devid(dev)) {
+ case 0x0525102b:
+ s = "Matrox MGA G400 AGP graphics accelerator";
+ break;
+
+ case 0x0521102b:
+ s = "Matrox MGA G200 AGP graphics accelerator";
+ break;
+ }
+
+ if (s) {
+ device_set_desc(dev, s);
+ return 0;
+ }
+
+ return ENXIO;
+}
+
+static int mga_attach(device_t dev)
+{
+ return mga_init(dev);
+}
+
+static int mga_detach(device_t dev)
+{
+ mga_cleanup(dev);
+ return 0;
+}
+
+static device_method_t mga_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, mga_probe),
+ DEVMETHOD(device_attach, mga_attach),
+ DEVMETHOD(device_detach, mga_detach),
+
+ { 0, 0 }
+};
+
+static driver_t mga_driver = {
+ "drm",
+ mga_methods,
+ sizeof(drm_device_t),
+};
+
+static devclass_t mga_devclass;
+#define MGA_SOFTC(unit) \
+ ((drm_device_t *) devclass_get_softc(mga_devclass, unit))
+
+DRIVER_MODULE(if_mga, pci, mga_driver, mga_devclass, 0, 0);
+
+#define CDEV_MAJOR 145
+ /* mga_drv.c */
+static struct cdevsw mga_cdevsw = {
+ /* open */ mga_open,
+ /* close */ mga_close,
+ /* read */ drm_read,
+ /* write */ drm_write,
+ /* ioctl */ mga_ioctl,
+ /* poll */ drm_poll,
+ /* mmap */ drm_mmap,
+ /* strategy */ nostrategy,
+ /* name */ "mga",
+ /* maj */ CDEV_MAJOR,
+ /* dump */ nodump,
+ /* psize */ nopsize,
+ /* flags */ D_TTY | D_TRACKCLOSE,
+ /* bmaj */ -1
+};
+
+static drm_ioctl_desc_t mga_ioctls[] = {
+ [DRM_IOCTL_NR(DRM_IOCTL_VERSION)] = { mga_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_CONTROL)] = { mga_control, 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_BUFS)] = { mga_addbufs, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS)] = { mga_markbufs, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS)] = { mga_infobufs, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS)] = { mga_mapbufs, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS)] = { mga_freebufs, 1, 0 },
+
+ [DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)] = { mga_addctx, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)] = { mga_rmctx, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)] = { mga_modctx, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)] = { mga_getctx, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)] = { mga_switchctx, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)] = { mga_newctx, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)] = { mga_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_DMA)] = { mga_dma, 1, 0 },
+
+ [DRM_IOCTL_NR(DRM_IOCTL_LOCK)] = { mga_lock, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)] = { mga_unlock, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_FINISH)] = { drm_finish, 1, 0 },
+
+ [DRM_IOCTL_NR(DRM_IOCTL_AGP_ACQUIRE)] = { drm_agp_acquire, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_AGP_RELEASE)] = { drm_agp_release, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE)] = { drm_agp_enable, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO)] = { drm_agp_info, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC)] = { drm_agp_alloc, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE)] = { drm_agp_free, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND)] = { drm_agp_bind, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND)] = { drm_agp_unbind, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_MGA_INIT)] = { mga_dma_init, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_MGA_SWAP)] = { mga_swap_bufs, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_MGA_CLEAR)] = { mga_clear_bufs, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_MGA_ILOAD)] = { mga_iload, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_MGA_VERTEX)] = { mga_vertex, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_MGA_FLUSH)] = { mga_flush_ioctl, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_MGA_INDICES)] = { mga_indices, 1, 0 },
+};
+
+#define MGA_IOCTL_COUNT DRM_ARRAY_SIZE(mga_ioctls)
+
+static int mga_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);
+
+ drm_dma_setup(dev);
+
+ 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_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;
+
+ 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 mga_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");
+
+ if (dev->irq) mga_irq_uninstall(dev);
+
+ 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 AGP information */
+ if (dev->agp) {
+ drm_agp_mem_t *entry;
+ drm_agp_mem_t *nexte;
+
+ /* Remove AGP resources, but leave dev->agp
+ intact until cleanup is called. */
+ for (entry = dev->agp->memory; entry; entry = nexte) {
+ nexte = entry->next;
+ if (entry->bound) drm_unbind_agp(entry->handle);
+ drm_free_agp(entry->handle, entry->pages);
+ drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
+ }
+ dev->agp->memory = NULL;
+
+ if (dev->agp->acquired)
+ agp_release(dev->agp->agpdev);
+
+ dev->agp->acquired = 0;
+ dev->agp->enabled = 0;
+ }
+ /* 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;
+ }
+ 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->queuelist) {
+ for (i = 0; i < dev->queue_count; i++) {
+ drm_waitlist_destroy(&dev->queuelist[i]->waitlist);
+ if (dev->queuelist[i]) {
+ drm_free(dev->queuelist[i],
+ sizeof(*dev->queuelist[0]),
+ DRM_MEM_QUEUES);
+ dev->queuelist[i] = NULL;
+ }
+ }
+ drm_free(dev->queuelist,
+ dev->queue_slots * sizeof(*dev->queuelist),
+ DRM_MEM_QUEUES);
+ dev->queuelist = NULL;
+ }
+
+ drm_dma_takedown(dev);
+
+ dev->queue_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);
+
+ return 0;
+}
+
+/* mga_init is called via mga_attach at module load time, */
+
+int
+mga_init(device_t nbdev)
+{
+ int retcode;
+ 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(mga);
+#endif
+ dev->device = nbdev;
+ dev->devnode = make_dev(&mga_cdevsw,
+ device_get_unit(nbdev),
+ DRM_DEV_UID,
+ DRM_DEV_GID,
+ DRM_DEV_MODE,
+ MGA_NAME);
+ dev->name = MGA_NAME;
+
+ DRM_DEBUG("doing mem init\n");
+ drm_mem_init();
+ DRM_DEBUG("doing proc init\n");
+ drm_sysctl_init(dev);
+ TAILQ_INIT(&dev->files);
+ DRM_DEBUG("doing agp init\n");
+ dev->agp = drm_agp_init();
+ if(dev->agp == NULL) {
+ DRM_INFO("The mga drm module requires the agp module"
+ " to function correctly\nPlease load the agp"
+ " module before you load the mga module\n");
+ drm_sysctl_cleanup(dev);
+ mga_takedown(dev);
+ return ENOMEM;
+ }
+#if 0
+ dev->agp->agp_mtrr = mtrr_add(dev->agp->agp_info.aper_base,
+ dev->agp->agp_info.aper_size * 1024 * 1024,
+ MTRR_TYPE_WRCOMB,
+ 1);
+#endif
+ DRM_DEBUG("doing ctxbitmap init\n");
+ if((retcode = drm_ctxbitmap_init(dev))) {
+ DRM_ERROR("Cannot allocate memory for context bitmap.\n");
+ drm_sysctl_cleanup(dev);
+ mga_takedown(dev);
+ return retcode;
+ }
+
+ DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
+ MGA_NAME,
+ MGA_MAJOR,
+ MGA_MINOR,
+ MGA_PATCHLEVEL,
+ MGA_DATE,
+ device_get_unit(nbdev));
+
+ return 0;
+}
+
+/* mga_cleanup is called via cleanup_module at module unload time. */
+
+void mga_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");
+ drm_ctxbitmap_cleanup(dev);
+ mga_dma_cleanup(dev);
+#if 0
+ if(dev->agp && dev->agp->agp_mtrr) {
+ int retval;
+ retval = mtrr_del(dev->agp->agp_mtrr,
+ dev->agp->agp_info.aper_base,
+ dev->agp->agp_info.aper_size * 1024*1024);
+ DRM_DEBUG("mtrr_del = %d\n", retval);
+ }
+#endif
+
+ mga_takedown(dev);
+ if (dev->agp) {
+ drm_free(dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS);
+ dev->agp = NULL;
+ }
+}
+
+int
+mga_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 = MGA_MAJOR;
+ version.version_minor = MGA_MINOR;
+ version.version_patchlevel = MGA_PATCHLEVEL;
+
+ DRM_COPY(version.name, MGA_NAME);
+ DRM_COPY(version.date, MGA_DATE);
+ DRM_COPY(version.desc, MGA_DESC);
+
+ *(drm_version_t *) data = version;
+ return 0;
+}
+
+int
+mga_open(dev_t kdev, int flags, int fmt, struct proc *p)
+{
+ drm_device_t *dev = MGA_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 = mga_setup(dev);
+ }
+ simple_unlock(&dev->count_lock);
+ }
+ device_unbusy(dev->device);
+
+ return retcode;
+}
+
+int
+mga_close(dev_t kdev, int flags, int fmt, struct proc *p)
+{
+ drm_device_t *dev = kdev->si_drv1;
+ drm_file_t *priv;
+ int retcode = 0;
+
+ DRM_DEBUG("pid = %d, open_count = %d\n",
+ p->p_pid, dev->open_count);
+
+ priv = drm_find_file_by_proc(dev, p);
+ if (!priv) {
+ DRM_DEBUG("can't find authenticator\n");
+ return EINVAL;
+ }
+
+ if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
+ && dev->lock.pid == p->p_pid) {
+ mga_reclaim_buffers(dev, priv->pid);
+ DRM_ERROR("Process %d dead, freeing lock for context %d\n",
+ p->p_pid,
+ _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
+ drm_lock_free(dev,
+ &dev->lock.hw_lock->lock,
+ _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
+
+ /* FIXME: may require heavy-handed reset of
+ hardware at this point, possibly
+ processed via a callback to the X
+ server. */
+ } else if (dev->lock.hw_lock) {
+ /* The lock is required to reclaim buffers */
+ for (;;) {
+ if (!dev->lock.hw_lock) {
+ /* Device has been unregistered */
+ retcode = EINTR;
+ break;
+ }
+ if (drm_lock_take(&dev->lock.hw_lock->lock,
+ DRM_KERNEL_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);
+ retcode = tsleep(&dev->lock.lock_queue,
+ PZERO|PCATCH,
+ "drmlk2",
+ 0);
+ if (retcode)
+ break;
+ }
+ if(!retcode) {
+ mga_reclaim_buffers(dev, priv->pid);
+ drm_lock_free(dev, &dev->lock.hw_lock->lock,
+ DRM_KERNEL_CONTEXT);
+ }
+ }
+ funsetown(dev->buf_sigio);
+
+ lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, p);
+ priv = drm_find_file_by_proc(dev, p);
+ if (priv) {
+ priv->refs--;
+ if (!priv->refs) {
+ TAILQ_REMOVE(&dev->files, priv, link);
+ drm_free(priv, sizeof(*priv), DRM_MEM_FILES);
+ }
+ }
+ lockmgr(&dev->dev_lock, LK_RELEASE, 0, 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);
+ device_unbusy(dev->device);
+ return mga_takedown(dev);
+ }
+ simple_unlock(&dev->count_lock);
+ return retcode;
+}
+
+
+/* mga_ioctl is called whenever a process performs an ioctl on /dev/drm. */
+
+int
+mga_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 >= MGA_IOCTL_COUNT) {
+ retcode = EINVAL;
+ } else {
+ ioctl = &mga_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;
+}
+
+int
+mga_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;
+ int s;
+
+ 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);
+
+ s = splsofttq();
+ mga_dma_schedule(dev, 1);
+ splx(s);
+
+ if (drm_lock_free(dev, &dev->lock.hw_lock->lock,
+ DRM_KERNEL_CONTEXT)) {
+ DRM_ERROR("\n");
+ }
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-15 02:42:15 +0000