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-rw-r--r--bsd/gamma/gamma_drv.c574
1 files changed, 574 insertions, 0 deletions
diff --git a/bsd/gamma/gamma_drv.c b/bsd/gamma/gamma_drv.c
new file mode 100644
index 00000000..fe71737a
--- /dev/null
+++ b/bsd/gamma/gamma_drv.c
@@ -0,0 +1,574 @@
+/* gamma.c -- 3dlabs GMX 2000 driver -*- c -*-
+ * Created: Mon Jan 4 08:58:31 1999 by faith@precisioninsight.com
+ * Revised: Tue Oct 12 08:51:36 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: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/gamma_drv.c,v 1.17 1999/08/30 13:05:00 faith Exp $
+ * $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/gamma_drv.c,v 1.1 1999/09/25 14:38:00 dawes Exp $
+ *
+ */
+
+#include "drmP.h"
+#include "gamma_drv.h"
+
+#include <pci/pcivar.h>
+
+MODULE_DEPEND(gamma, drm, 1, 1, 1);
+
+static int gamma_init(device_t nbdev);
+static void gamma_cleanup(device_t nbdev);
+
+static int gamma_probe(device_t dev)
+{
+ const char *s = 0;
+
+ switch (pci_get_devid(dev)) {
+ case 0x00083d3d:
+ s = "3D Labs Gamma graphics accelerator";
+ break;
+ }
+
+ if (s) {
+ device_set_desc(dev, s);
+ return 0;
+ }
+
+ return ENXIO;
+}
+
+static int gamma_attach(device_t dev)
+{
+ gamma_init(dev);
+ return 0;
+}
+
+static int gamma_detach(device_t dev)
+{
+ gamma_cleanup(dev);
+ return 0;
+}
+
+static device_method_t gamma_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, gamma_probe),
+ DEVMETHOD(device_attach, gamma_attach),
+ DEVMETHOD(device_detach, gamma_detach),
+
+ { 0, 0 }
+};
+
+static driver_t gamma_driver = {
+ "drm",
+ gamma_methods,
+ sizeof(drm_device_t),
+};
+
+static devclass_t gamma_devclass;
+#define GAMMA_SOFTC(unit) \
+ ((drm_device_t *) devclass_get_softc(gamma_devclass, unit))
+
+DRIVER_MODULE(if_gamma, pci, gamma_driver, gamma_devclass, 0, 0);
+
+#define GAMMA_NAME "gamma"
+#define GAMMA_DESC "3dlabs GMX 2000"
+#define GAMMA_DATE "19990830"
+#define GAMMA_MAJOR 0
+#define GAMMA_MINOR 0
+#define GAMMA_PATCHLEVEL 5
+
+#define CDEV_MAJOR 200
+
+static struct cdevsw gamma_cdevsw = {
+ /* open */ gamma_open,
+ /* close */ gamma_close,
+ /* read */ drm_read,
+ /* write */ drm_write,
+ /* ioctl */ gamma_ioctl,
+ /* poll */ nopoll,
+ /* mmap */ drm_mmap,
+ /* strategy */ nostrategy,
+ /* name */ "gamma",
+ /* maj */ CDEV_MAJOR,
+ /* dump */ nodump,
+ /* psize */ nopsize,
+ /* flags */ D_TTY | D_TRACKCLOSE,
+ /* bmaj */ -1
+};
+
+static drm_ioctl_desc_t gamma_ioctls[] = {
+ [DRM_IOCTL_NR(DRM_IOCTL_VERSION)] = { gamma_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)] = { gamma_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)] = { drm_addbufs, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS)] = { drm_markbufs, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS)] = { drm_infobufs, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS)] = { drm_mapbufs, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS)] = { drm_freebufs, 1, 0 },
+
+ [DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)] = { drm_addctx, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)] = { drm_rmctx, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)] = { drm_modctx, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)] = { drm_getctx, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)] = { drm_switchctx, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)] = { drm_newctx, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)] = { drm_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)] = { gamma_dma, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_LOCK)] = { gamma_lock, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)] = { gamma_unlock, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_FINISH)] = { drm_finish, 1, 0 },
+};
+#define GAMMA_IOCTL_COUNT DRM_ARRAY_SIZE(gamma_ioctls)
+
+static int gamma_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;
+#if DRM_DMA_HISTO
+ memset(&dev->histo, 0, sizeof(dev->histo));
+#endif
+ 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;
+ dev->buf_sigio = NULL;
+
+ 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
+gamma_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) gamma_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 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;
+ }
+ 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);
+
+ device_unbusy(dev->device);
+
+ return 0;
+}
+
+/* gamma_init is called via gamma_attach at module load time */
+
+static int
+gamma_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 /* XXX use getenv I guess */
+ drm_parse_options(gamma);
+#endif
+
+#if 0
+ if ((retcode = misc_register(&gamma_misc))) {
+ DRM_ERROR("Cannot register \"%s\"\n", GAMMA_NAME);
+ return retcode;
+ }
+#endif
+ dev->device = nbdev;
+ dev->devnode = make_dev(&gamma_cdevsw,
+ device_get_unit(nbdev),
+ DRM_DEV_UID,
+ DRM_DEV_GID,
+ DRM_DEV_MODE,
+ GAMMA_NAME);
+ dev->name = GAMMA_NAME;
+
+ drm_mem_init();
+ drm_sysctl_init(dev);
+
+ DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
+ GAMMA_NAME,
+ GAMMA_MAJOR,
+ GAMMA_MINOR,
+ GAMMA_PATCHLEVEL,
+ GAMMA_DATE,
+ device_get_unit(nbdev));
+
+ return 0;
+}
+
+/* gamma_cleanup is called via gamma_detach at module unload time. */
+
+static void
+gamma_cleanup(device_t nbdev)
+{
+ drm_device_t *dev = device_get_softc(nbdev);
+
+ DRM_DEBUG("\n");
+
+ drm_sysctl_cleanup(dev);
+#if 0
+ if (misc_deregister(&gamma_misc)) {
+ DRM_ERROR("Cannot unload module\n");
+ } else {
+ DRM_INFO("Module unloaded\n");
+ }
+#endif
+ device_busy(dev->device);
+ gamma_takedown(dev);
+}
+
+SYSUNINIT(gamma_cleanup, SI_SUB_DRIVERS, SI_ORDER_ANY, gamma_cleanup, 0);
+
+#if 0
+int gamma_version(struct inode *inode, struct file *filp, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_version_t version;
+ int len;
+
+ copy_from_user_ret(&version,
+ (drm_version_t *)arg,
+ sizeof(version),
+ -EFAULT);
+
+#define DRM_COPY(name,value) \
+ len = strlen(value); \
+ if (len > name##_len) len = name##_len; \
+ name##_len = strlen(value); \
+ if (len && name) { \
+ copy_to_user_ret(name, value, len, -EFAULT); \
+ }
+
+ version.version_major = GAMMA_MAJOR;
+ version.version_minor = GAMMA_MINOR;
+ version.version_patchlevel = GAMMA_PATCHLEVEL;
+
+ DRM_COPY(version.name, GAMMA_NAME);
+ DRM_COPY(version.date, GAMMA_DATE);
+ DRM_COPY(version.desc, GAMMA_DESC);
+
+ copy_to_user_ret((drm_version_t *)arg,
+ &version,
+ sizeof(version),
+ -EFAULT);
+ return 0;
+}
+#endif
+
+int
+gamma_open(dev_t kdev, int flags, int fmt, struct proc *p)
+{
+ drm_device_t *dev = GAMMA_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 = gamma_setup(dev);
+ }
+ simple_unlock(&dev->count_lock);
+ }
+ device_unbusy(dev->device);
+
+ return retcode;
+}
+
+int
+gamma_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 gamma_takedown(dev);
+ }
+ simple_unlock(&dev->count_lock);
+ }
+ return retcode;
+}
+
+/* drm_ioctl is called whenever a process performs an ioctl on /dev/drm. */
+
+int
+gamma_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;
+
+ 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 FIOSETOWN:
+ return fsetown(*(int *)data, &dev->buf_sigio);
+
+ case FIOGETOWN:
+ *(int *) data = fgetown(dev->buf_sigio);
+ return 0;
+ }
+
+ if (nr >= GAMMA_IOCTL_COUNT) {
+ retcode = EINVAL;
+ } else {
+ ioctl = &gamma_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 gamma_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 *lockp = (drm_lock_t *) data;
+
+ if (lockp->context == DRM_KERNEL_CONTEXT) {
+ DRM_ERROR("Process %d using kernel context %d\n",
+ p->p_pid, lockp->context);
+ return -EINVAL;
+ }
+
+ DRM_DEBUG("%d frees lock (%d holds)\n",
+ lockp->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);
+ gamma_dma_schedule(dev, 1);
+ if (!dev->context_flag) {
+ if (drm_lock_free(dev, &dev->lock.hw_lock->lock,
+ DRM_KERNEL_CONTEXT)) {
+ DRM_ERROR("\n");
+ }
+ }
+
+#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 0;
+}
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