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-rw-r--r--linux-core/Makefile.kernel9
-rw-r--r--linux-core/i810_dma.c762
-rw-r--r--linux-core/i810_drv.c583
-rw-r--r--linux-core/i810_drv.h76
-rw-r--r--linux-core/mga_drv.c576
5 files changed, 2005 insertions, 1 deletions
diff --git a/linux-core/Makefile.kernel b/linux-core/Makefile.kernel
index c286d8fd..44d75c48 100644
--- a/linux-core/Makefile.kernel
+++ b/linux-core/Makefile.kernel
@@ -9,7 +9,7 @@
# Note 2! The CFLAGS definitions are now inherited from the
# parent makes..
#
-# $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/Makefile.kernel,v 1.2 1999/09/27 14:59:24 dawes Exp $
+# $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/Makefile.kernel,v 1.5 2000/02/14 06:27:25 martin Exp $
L_TARGET := libdrm.a
@@ -22,7 +22,14 @@ ifdef CONFIG_DRM_GAMMA
M_OBJS += gamma.o
endif
+ifdef CONFIG_DRM_TDFX
+M_OBJS += tdfx.o
+endif
+
include $(TOPDIR)/Rules.make
gamma.o: gamma_drv.o gamma_dma.o $(L_TARGET)
$(LD) $(LD_RFLAG) -r -o $@ gamma_drv.o gamma_dma.o -L. -ldrm
+
+tdfx.o: tdfx_drv.o tdfx_context.o $(L_TARGET)
+ $(LD) $(LD_RFLAG) -r -o $@ tdfx_drv.o tdfx_context.o -L. -ldrm
diff --git a/linux-core/i810_dma.c b/linux-core/i810_dma.c
new file mode 100644
index 00000000..09959b65
--- /dev/null
+++ b/linux-core/i810_dma.c
@@ -0,0 +1,762 @@
+/* i810_dma.c -- DMA support for the i810 -*- linux-c -*-
+ * Created: Mon Dec 13 01:50:01 1999 by jhartmann@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.
+ *
+ * Authors: Rickard E. (Rik) Faith <faith@precisioninsight.com>
+ * Jeff Hartmann <jhartmann@precisioninsight.com>
+ *
+ * $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/i810_dma.c,v 1.1 2000/02/11 17:26:04 dawes Exp $
+ *
+ */
+
+#define __NO_VERSION__
+#include "drmP.h"
+#include "i810_drv.h"
+
+#include <linux/interrupt.h> /* For task queue support */
+
+#define I810_REG(reg) 2
+#define I810_BASE(reg) ((unsigned long) \
+ dev->maplist[I810_REG(reg)]->handle)
+#define I810_ADDR(reg) (I810_BASE(reg) + reg)
+#define I810_DEREF(reg) *(__volatile__ int *)I810_ADDR(reg)
+#define I810_READ(reg) I810_DEREF(reg)
+#define I810_WRITE(reg,val) do { I810_DEREF(reg) = val; } while (0)
+
+void i810_dma_init(drm_device_t *dev)
+{
+ printk(KERN_INFO "i810_dma_init\n");
+}
+
+void i810_dma_cleanup(drm_device_t *dev)
+{
+ printk(KERN_INFO "i810_dma_cleanup\n");
+}
+
+static inline void i810_dma_dispatch(drm_device_t *dev, unsigned long address,
+ unsigned long length)
+{
+ printk(KERN_INFO "i810_dma_dispatch\n");
+}
+
+static inline void i810_dma_quiescent(drm_device_t *dev)
+{
+}
+
+static inline void i810_dma_ready(drm_device_t *dev)
+{
+ i810_dma_quiescent(dev);
+ printk(KERN_INFO "i810_dma_ready\n");
+}
+
+static inline int i810_dma_is_ready(drm_device_t *dev)
+{
+
+ i810_dma_quiescent(dev);
+
+ printk(KERN_INFO "i810_dma_is_ready\n");
+ return 1;
+}
+
+
+static void i810_dma_service(int irq, void *device, struct pt_regs *regs)
+{
+ drm_device_t *dev = (drm_device_t *)device;
+ drm_device_dma_t *dma = dev->dma;
+
+ atomic_inc(&dev->total_irq);
+ if (i810_dma_is_ready(dev)) {
+ /* Free previous buffer */
+ if (test_and_set_bit(0, &dev->dma_flag)) {
+ atomic_inc(&dma->total_missed_free);
+ return;
+ }
+ if (dma->this_buffer) {
+ drm_free_buffer(dev, dma->this_buffer);
+ dma->this_buffer = NULL;
+ }
+ clear_bit(0, &dev->dma_flag);
+
+ /* Dispatch new buffer */
+ queue_task(&dev->tq, &tq_immediate);
+ mark_bh(IMMEDIATE_BH);
+ }
+}
+
+/* Only called by i810_dma_schedule. */
+static int i810_do_dma(drm_device_t *dev, int locked)
+{
+ unsigned long address;
+ unsigned long length;
+ drm_buf_t *buf;
+ int retcode = 0;
+ drm_device_dma_t *dma = dev->dma;
+#if DRM_DMA_HISTOGRAM
+ cycles_t dma_start, dma_stop;
+#endif
+
+ if (test_and_set_bit(0, &dev->dma_flag)) {
+ atomic_inc(&dma->total_missed_dma);
+ return -EBUSY;
+ }
+
+#if DRM_DMA_HISTOGRAM
+ dma_start = get_cycles();
+#endif
+
+ if (!dma->next_buffer) {
+ DRM_ERROR("No next_buffer\n");
+ clear_bit(0, &dev->dma_flag);
+ return -EINVAL;
+ }
+
+ buf = dma->next_buffer;
+ address = (unsigned long)buf->bus_address;
+ length = buf->used;
+
+
+ DRM_DEBUG("context %d, buffer %d (%ld bytes)\n",
+ buf->context, buf->idx, length);
+
+ if (buf->list == DRM_LIST_RECLAIM) {
+ drm_clear_next_buffer(dev);
+ drm_free_buffer(dev, buf);
+ clear_bit(0, &dev->dma_flag);
+ return -EINVAL;
+ }
+
+ if (!length) {
+ DRM_ERROR("0 length buffer\n");
+ drm_clear_next_buffer(dev);
+ drm_free_buffer(dev, buf);
+ clear_bit(0, &dev->dma_flag);
+ return 0;
+ }
+
+ if (!i810_dma_is_ready(dev)) {
+ clear_bit(0, &dev->dma_flag);
+ return -EBUSY;
+ }
+
+ if (buf->while_locked) {
+ if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) {
+ DRM_ERROR("Dispatching buffer %d from pid %d"
+ " \"while locked\", but no lock held\n",
+ buf->idx, buf->pid);
+ }
+ } else {
+ if (!locked && !drm_lock_take(&dev->lock.hw_lock->lock,
+ DRM_KERNEL_CONTEXT)) {
+ atomic_inc(&dma->total_missed_lock);
+ clear_bit(0, &dev->dma_flag);
+ return -EBUSY;
+ }
+ }
+
+ if (dev->last_context != buf->context
+ && !(dev->queuelist[buf->context]->flags
+ & _DRM_CONTEXT_PRESERVED)) {
+ /* PRE: dev->last_context != buf->context */
+ if (drm_context_switch(dev, dev->last_context, buf->context)) {
+ drm_clear_next_buffer(dev);
+ drm_free_buffer(dev, buf);
+ }
+ retcode = -EBUSY;
+ goto cleanup;
+
+ /* POST: we will wait for the context
+ switch and will dispatch on a later call
+ when dev->last_context == buf->context.
+ NOTE WE HOLD THE LOCK THROUGHOUT THIS
+ TIME! */
+ }
+
+ drm_clear_next_buffer(dev);
+ buf->pending = 1;
+ buf->waiting = 0;
+ buf->list = DRM_LIST_PEND;
+#if DRM_DMA_HISTOGRAM
+ buf->time_dispatched = get_cycles();
+#endif
+
+ i810_dma_dispatch(dev, address, length);
+ drm_free_buffer(dev, dma->this_buffer);
+ dma->this_buffer = buf;
+
+ atomic_add(length, &dma->total_bytes);
+ atomic_inc(&dma->total_dmas);
+
+ if (!buf->while_locked && !dev->context_flag && !locked) {
+ if (drm_lock_free(dev, &dev->lock.hw_lock->lock,
+ DRM_KERNEL_CONTEXT)) {
+ DRM_ERROR("\n");
+ }
+ }
+cleanup:
+
+ clear_bit(0, &dev->dma_flag);
+
+#if DRM_DMA_HISTOGRAM
+ dma_stop = get_cycles();
+ atomic_inc(&dev->histo.dma[drm_histogram_slot(dma_stop - dma_start)]);
+#endif
+
+ return retcode;
+}
+
+static void i810_dma_schedule_timer_wrapper(unsigned long dev)
+{
+ i810_dma_schedule((drm_device_t *)dev, 0);
+}
+
+static void i810_dma_schedule_tq_wrapper(void *dev)
+{
+ i810_dma_schedule(dev, 0);
+}
+
+int i810_dma_schedule(drm_device_t *dev, int locked)
+{
+ int next;
+ drm_queue_t *q;
+ drm_buf_t *buf;
+ int retcode = 0;
+ int processed = 0;
+ int missed;
+ int expire = 20;
+ drm_device_dma_t *dma = dev->dma;
+#if DRM_DMA_HISTOGRAM
+ cycles_t schedule_start;
+#endif
+
+ if (test_and_set_bit(0, &dev->interrupt_flag)) {
+ /* Not reentrant */
+ atomic_inc(&dma->total_missed_sched);
+ return -EBUSY;
+ }
+ missed = atomic_read(&dma->total_missed_sched);
+
+#if DRM_DMA_HISTOGRAM
+ schedule_start = get_cycles();
+#endif
+
+again:
+ if (dev->context_flag) {
+ clear_bit(0, &dev->interrupt_flag);
+ return -EBUSY;
+ }
+ if (dma->next_buffer) {
+ /* Unsent buffer that was previously
+ selected, but that couldn't be sent
+ because the lock could not be obtained
+ or the DMA engine wasn't ready. Try
+ again. */
+ atomic_inc(&dma->total_tried);
+ if (!(retcode = i810_do_dma(dev, locked))) {
+ atomic_inc(&dma->total_hit);
+ ++processed;
+ }
+ } else {
+ do {
+ next = drm_select_queue(dev,
+ i810_dma_schedule_timer_wrapper);
+ if (next >= 0) {
+ q = dev->queuelist[next];
+ buf = drm_waitlist_get(&q->waitlist);
+ dma->next_buffer = buf;
+ dma->next_queue = q;
+ if (buf && buf->list == DRM_LIST_RECLAIM) {
+ drm_clear_next_buffer(dev);
+ drm_free_buffer(dev, buf);
+ }
+ }
+ } while (next >= 0 && !dma->next_buffer);
+ if (dma->next_buffer) {
+ if (!(retcode = i810_do_dma(dev, locked))) {
+ ++processed;
+ }
+ }
+ }
+
+ if (--expire) {
+ if (missed != atomic_read(&dma->total_missed_sched)) {
+ atomic_inc(&dma->total_lost);
+ if (i810_dma_is_ready(dev)) goto again;
+ }
+ if (processed && i810_dma_is_ready(dev)) {
+ atomic_inc(&dma->total_lost);
+ processed = 0;
+ goto again;
+ }
+ }
+
+ clear_bit(0, &dev->interrupt_flag);
+
+#if DRM_DMA_HISTOGRAM
+ atomic_inc(&dev->histo.schedule[drm_histogram_slot(get_cycles()
+ - schedule_start)]);
+#endif
+ return retcode;
+}
+
+static int i810_dma_priority(drm_device_t *dev, drm_dma_t *d)
+{
+ unsigned long address;
+ unsigned long length;
+ int must_free = 0;
+ int retcode = 0;
+ int i;
+ int idx;
+ drm_buf_t *buf;
+ drm_buf_t *last_buf = NULL;
+ drm_device_dma_t *dma = dev->dma;
+ DECLARE_WAITQUEUE(entry, current);
+
+ /* Turn off interrupt handling */
+ while (test_and_set_bit(0, &dev->interrupt_flag)) {
+ schedule();
+ if (signal_pending(current)) return -EINTR;
+ }
+ if (!(d->flags & _DRM_DMA_WHILE_LOCKED)) {
+ while (!drm_lock_take(&dev->lock.hw_lock->lock,
+ DRM_KERNEL_CONTEXT)) {
+ schedule();
+ if (signal_pending(current)) {
+ clear_bit(0, &dev->interrupt_flag);
+ return -EINTR;
+ }
+ }
+ ++must_free;
+ }
+ atomic_inc(&dma->total_prio);
+
+ for (i = 0; i < d->send_count; i++) {
+ idx = d->send_indices[i];
+ if (idx < 0 || idx >= dma->buf_count) {
+ DRM_ERROR("Index %d (of %d max)\n",
+ d->send_indices[i], dma->buf_count - 1);
+ continue;
+ }
+ buf = dma->buflist[ idx ];
+ if (buf->pid != current->pid) {
+ DRM_ERROR("Process %d using buffer owned by %d\n",
+ current->pid, buf->pid);
+ retcode = -EINVAL;
+ goto cleanup;
+ }
+ if (buf->list != DRM_LIST_NONE) {
+ DRM_ERROR("Process %d using %d's buffer on list %d\n",
+ current->pid, buf->pid, buf->list);
+ retcode = -EINVAL;
+ goto cleanup;
+ }
+ /* This isn't a race condition on
+ buf->list, since our concern is the
+ buffer reclaim during the time the
+ process closes the /dev/drm? handle, so
+ it can't also be doing DMA. */
+ buf->list = DRM_LIST_PRIO;
+ buf->used = d->send_sizes[i];
+ buf->context = d->context;
+ buf->while_locked = d->flags & _DRM_DMA_WHILE_LOCKED;
+ address = (unsigned long)buf->address;
+ length = buf->used;
+ if (!length) {
+ DRM_ERROR("0 length buffer\n");
+ }
+ if (buf->pending) {
+ DRM_ERROR("Sending pending buffer:"
+ " buffer %d, offset %d\n",
+ d->send_indices[i], i);
+ retcode = -EINVAL;
+ goto cleanup;
+ }
+ if (buf->waiting) {
+ DRM_ERROR("Sending waiting buffer:"
+ " buffer %d, offset %d\n",
+ d->send_indices[i], i);
+ retcode = -EINVAL;
+ goto cleanup;
+ }
+ buf->pending = 1;
+
+ if (dev->last_context != buf->context
+ && !(dev->queuelist[buf->context]->flags
+ & _DRM_CONTEXT_PRESERVED)) {
+ add_wait_queue(&dev->context_wait, &entry);
+ current->state = TASK_INTERRUPTIBLE;
+ /* PRE: dev->last_context != buf->context */
+ drm_context_switch(dev, dev->last_context,
+ buf->context);
+ /* POST: we will wait for the context
+ switch and will dispatch on a later call
+ when dev->last_context == buf->context.
+ NOTE WE HOLD THE LOCK THROUGHOUT THIS
+ TIME! */
+ schedule();
+ current->state = TASK_RUNNING;
+ remove_wait_queue(&dev->context_wait, &entry);
+ if (signal_pending(current)) {
+ retcode = -EINTR;
+ goto cleanup;
+ }
+ if (dev->last_context != buf->context) {
+ DRM_ERROR("Context mismatch: %d %d\n",
+ dev->last_context,
+ buf->context);
+ }
+ }
+
+#if DRM_DMA_HISTOGRAM
+ buf->time_queued = get_cycles();
+ buf->time_dispatched = buf->time_queued;
+#endif
+ i810_dma_dispatch(dev, address, length);
+ if (drm_lock_free(dev, &dev->lock.hw_lock->lock,
+ DRM_KERNEL_CONTEXT)) {
+ DRM_ERROR("\n");
+ }
+
+ atomic_add(length, &dma->total_bytes);
+ atomic_inc(&dma->total_dmas);
+
+ if (last_buf) {
+ drm_free_buffer(dev, last_buf);
+ }
+ last_buf = buf;
+ }
+
+
+cleanup:
+ if (last_buf) {
+ i810_dma_ready(dev);
+ drm_free_buffer(dev, last_buf);
+ }
+
+ if (must_free && !dev->context_flag) {
+ if (drm_lock_free(dev, &dev->lock.hw_lock->lock,
+ DRM_KERNEL_CONTEXT)) {
+ DRM_ERROR("\n");
+ }
+ }
+ clear_bit(0, &dev->interrupt_flag);
+ return retcode;
+}
+
+static int i810_dma_send_buffers(drm_device_t *dev, drm_dma_t *d)
+{
+ DECLARE_WAITQUEUE(entry, current);
+ drm_buf_t *last_buf = NULL;
+ int retcode = 0;
+ drm_device_dma_t *dma = dev->dma;
+
+ if (d->flags & _DRM_DMA_BLOCK) {
+ last_buf = dma->buflist[d->send_indices[d->send_count-1]];
+ add_wait_queue(&last_buf->dma_wait, &entry);
+ }
+
+ if ((retcode = drm_dma_enqueue(dev, d))) {
+ if (d->flags & _DRM_DMA_BLOCK)
+ remove_wait_queue(&last_buf->dma_wait, &entry);
+ return retcode;
+ }
+
+ i810_dma_schedule(dev, 0);
+
+ if (d->flags & _DRM_DMA_BLOCK) {
+ DRM_DEBUG("%d waiting\n", current->pid);
+ current->state = TASK_INTERRUPTIBLE;
+ for (;;) {
+ if (!last_buf->waiting
+ && !last_buf->pending)
+ break; /* finished */
+ schedule();
+ if (signal_pending(current)) {
+ retcode = -EINTR; /* Can't restart */
+ break;
+ }
+ }
+ current->state = TASK_RUNNING;
+ DRM_DEBUG("%d running\n", current->pid);
+ remove_wait_queue(&last_buf->dma_wait, &entry);
+ if (!retcode
+ || (last_buf->list==DRM_LIST_PEND && !last_buf->pending)) {
+ if (!waitqueue_active(&last_buf->dma_wait)) {
+ drm_free_buffer(dev, last_buf);
+ }
+ }
+ if (retcode) {
+ DRM_ERROR("ctx%d w%d p%d c%d i%d l%d %d/%d\n",
+ d->context,
+ last_buf->waiting,
+ last_buf->pending,
+ DRM_WAITCOUNT(dev, d->context),
+ last_buf->idx,
+ last_buf->list,
+ last_buf->pid,
+ current->pid);
+ }
+ }
+ return retcode;
+}
+
+int i810_dma(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_device_dma_t *dma = dev->dma;
+ int retcode = 0;
+ drm_dma_t d;
+
+ printk("i810_dma start\n");
+ copy_from_user_ret(&d, (drm_dma_t *)arg, sizeof(d), -EFAULT);
+ DRM_DEBUG("%d %d: %d send, %d req\n",
+ current->pid, d.context, d.send_count, d.request_count);
+
+ if (d.context == DRM_KERNEL_CONTEXT || d.context >= dev->queue_slots) {
+ DRM_ERROR("Process %d using context %d\n",
+ current->pid, d.context);
+ return -EINVAL;
+ }
+
+ if (d.send_count < 0 || d.send_count > dma->buf_count) {
+ DRM_ERROR("Process %d trying to send %d buffers (of %d max)\n",
+ current->pid, d.send_count, dma->buf_count);
+ return -EINVAL;
+ }
+ if (d.request_count < 0 || d.request_count > dma->buf_count) {
+ DRM_ERROR("Process %d trying to get %d buffers (of %d max)\n",
+ current->pid, d.request_count, dma->buf_count);
+ return -EINVAL;
+ }
+
+ if (d.send_count) {
+#if 0
+ if (d.flags & _DRM_DMA_PRIORITY)
+ retcode = i810_dma_priority(dev, &d);
+ else
+ retcode = i810_dma_send_buffers(dev, &d);
+#endif
+ printk("i810_dma priority\n");
+
+ retcode = i810_dma_priority(dev, &d);
+ }
+
+ d.granted_count = 0;
+
+ if (!retcode && d.request_count) {
+ retcode = drm_dma_get_buffers(dev, &d);
+ }
+
+ DRM_DEBUG("%d returning, granted = %d\n",
+ current->pid, d.granted_count);
+ copy_to_user_ret((drm_dma_t *)arg, &d, sizeof(d), -EFAULT);
+
+ printk("i810_dma end (granted)\n");
+ return retcode;
+}
+
+int i810_irq_install(drm_device_t *dev, int irq)
+{
+ int retcode;
+
+ if (!irq) return -EINVAL;
+
+ down(&dev->struct_sem);
+ if (dev->irq) {
+ up(&dev->struct_sem);
+ return -EBUSY;
+ }
+ dev->irq = irq;
+ up(&dev->struct_sem);
+
+ DRM_DEBUG("%d\n", irq);
+
+ dev->context_flag = 0;
+ dev->interrupt_flag = 0;
+ dev->dma_flag = 0;
+
+ dev->dma->next_buffer = NULL;
+ dev->dma->next_queue = NULL;
+ dev->dma->this_buffer = NULL;
+
+ dev->tq.next = NULL;
+ dev->tq.sync = 0;
+ dev->tq.routine = i810_dma_schedule_tq_wrapper;
+ dev->tq.data = dev;
+
+
+ /* Before installing handler */
+ /* TODO */
+ /* Install handler */
+ if ((retcode = request_irq(dev->irq,
+ i810_dma_service,
+ 0,
+ dev->devname,
+ dev))) {
+ down(&dev->struct_sem);
+ dev->irq = 0;
+ up(&dev->struct_sem);
+ return retcode;
+ }
+
+ /* After installing handler */
+ /* TODO */
+ return 0;
+}
+
+int i810_irq_uninstall(drm_device_t *dev)
+{
+ int irq;
+
+ down(&dev->struct_sem);
+ irq = dev->irq;
+ dev->irq = 0;
+ up(&dev->struct_sem);
+
+ if (!irq) return -EINVAL;
+
+ DRM_DEBUG("%d\n", irq);
+
+ /* TODO : Disable interrupts */
+ free_irq(irq, dev);
+
+ return 0;
+}
+
+
+int i810_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;
+ int retcode;
+
+ printk(KERN_INFO "i810_control\n");
+ i810_dma_init(dev);
+
+ copy_from_user_ret(&ctl, (drm_control_t *)arg, sizeof(ctl), -EFAULT);
+
+ switch (ctl.func) {
+ case DRM_INST_HANDLER:
+ if ((retcode = i810_irq_install(dev, ctl.irq)))
+ return retcode;
+ break;
+ case DRM_UNINST_HANDLER:
+ if ((retcode = i810_irq_uninstall(dev)))
+ return retcode;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+int i810_lock(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;
+ DECLARE_WAITQUEUE(entry, current);
+ int ret = 0;
+ drm_lock_t lock;
+ drm_queue_t *q;
+#if DRM_DMA_HISTOGRAM
+ cycles_t start;
+
+ dev->lck_start = start = get_cycles();
+#endif
+
+ copy_from_user_ret(&lock, (drm_lock_t *)arg, sizeof(lock), -EFAULT);
+
+ if (lock.context == DRM_KERNEL_CONTEXT) {
+ DRM_ERROR("Process %d using kernel context %d\n",
+ current->pid, lock.context);
+ return -EINVAL;
+ }
+
+ if (lock.context < 0 || lock.context >= dev->queue_count) {
+ return -EINVAL;
+ }
+ q = dev->queuelist[lock.context];
+
+ ret = drm_flush_block_and_flush(dev, lock.context, lock.flags);
+
+ if (!ret) {
+ if (_DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)
+ != lock.context) {
+ long j = jiffies - dev->lock.lock_time;
+
+ if (j > 0 && j <= DRM_LOCK_SLICE) {
+ /* Can't take lock if we just had it and
+ there is contention. */
+ current->state = TASK_INTERRUPTIBLE;
+ schedule_timeout(j);
+ }
+ }
+ add_wait_queue(&dev->lock.lock_queue, &entry);
+ 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 = current->pid;
+ dev->lock.lock_time = jiffies;
+ atomic_inc(&dev->total_locks);
+ atomic_inc(&q->total_locks);
+ break; /* Got lock */
+ }
+
+ /* Contention */
+ atomic_inc(&dev->total_sleeps);
+ current->state = TASK_INTERRUPTIBLE;
+ schedule();
+ if (signal_pending(current)) {
+ ret = -ERESTARTSYS;
+ break;
+ }
+ }
+ current->state = TASK_RUNNING;
+ remove_wait_queue(&dev->lock.lock_queue, &entry);
+ }
+
+ drm_flush_unblock(dev, lock.context, lock.flags); /* cleanup phase */
+
+ if (!ret) {
+ if (lock.flags & _DRM_LOCK_READY)
+ i810_dma_ready(dev);
+ if (lock.flags & _DRM_LOCK_QUIESCENT)
+ i810_dma_quiescent(dev);
+ }
+
+#if DRM_DMA_HISTOGRAM
+ atomic_inc(&dev->histo.lacq[drm_histogram_slot(get_cycles() - start)]);
+#endif
+
+ return ret;
+}
diff --git a/linux-core/i810_drv.c b/linux-core/i810_drv.c
new file mode 100644
index 00000000..f33153a3
--- /dev/null
+++ b/linux-core/i810_drv.c
@@ -0,0 +1,583 @@
+/* i810_drv.c -- I810 driver -*- linux-c -*-
+ * Created: Mon Dec 13 01:56:22 1999 by jhartmann@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.
+ *
+ * Authors: Rickard E. (Rik) Faith <faith@precisioninsight.com>
+ * Jeff Hartmann <jhartmann@precisioninsight.com>
+ *
+ * $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/i810_drv.c,v 1.1 2000/02/11 17:26:05 dawes Exp $
+ *
+ */
+
+#define EXPORT_SYMTAB
+#include "drmP.h"
+#include "i810_drv.h"
+EXPORT_SYMBOL(i810_init);
+EXPORT_SYMBOL(i810_cleanup);
+
+#define I810_NAME "i810"
+#define I810_DESC "Matrox g200/g400"
+#define I810_DATE "19991213"
+#define I810_MAJOR 0
+#define I810_MINOR 0
+#define I810_PATCHLEVEL 1
+
+static drm_device_t i810_device;
+drm_ctx_t i810_res_ctx;
+
+static struct file_operations i810_fops = {
+ open: i810_open,
+ flush: drm_flush,
+ release: i810_release,
+ ioctl: i810_ioctl,
+ mmap: drm_mmap,
+ read: drm_read,
+ fasync: drm_fasync,
+};
+
+static struct miscdevice i810_misc = {
+ minor: MISC_DYNAMIC_MINOR,
+ name: I810_NAME,
+ fops: &i810_fops,
+};
+
+static drm_ioctl_desc_t i810_ioctls[] = {
+ [DRM_IOCTL_NR(DRM_IOCTL_VERSION)] = { i810_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)] = { i810_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)] = { i810_addbufs, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS)] = { i810_markbufs, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS)] = { i810_infobufs, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS)] = { i810_mapbufs, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS)] = { i810_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)] = { i810_dma, 1, 0 },
+
+ [DRM_IOCTL_NR(DRM_IOCTL_LOCK)] = { i810_lock, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)] = { i810_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 },
+};
+
+#define I810_IOCTL_COUNT DRM_ARRAY_SIZE(i810_ioctls)
+
+#ifdef MODULE
+int init_module(void);
+void cleanup_module(void);
+static char *i810 = NULL;
+
+MODULE_AUTHOR("Precision Insight, Inc., Cedar Park, Texas.");
+MODULE_DESCRIPTION("Intel I810");
+MODULE_PARM(i810, "s");
+
+/* init_module is called when insmod is used to load the module */
+
+int init_module(void)
+{
+ printk("doing i810_init()\n");
+ return i810_init();
+}
+
+/* cleanup_module is called when rmmod is used to unload the module */
+
+void cleanup_module(void)
+{
+ i810_cleanup();
+}
+#endif
+
+#ifndef MODULE
+/* i810_setup is called by the kernel to parse command-line options passed
+ * via the boot-loader (e.g., LILO). It calls the insmod option routine,
+ * drm_parse_drm.
+ *
+ * This is not currently supported, since it requires changes to
+ * linux/init/main.c. */
+
+
+void __init i810_setup(char *str, int *ints)
+{
+ if (ints[0] != 0) {
+ DRM_ERROR("Illegal command line format, ignored\n");
+ return;
+ }
+ drm_parse_options(str);
+}
+#endif
+
+static int i810_setup(drm_device_t *dev)
+{
+ int i;
+
+ 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;
+ init_waitqueue_head(&dev->lock.lock_queue);
+ 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;
+ init_timer(&dev->timer);
+ init_waitqueue_head(&dev->context_wait);
+#if DRM_DMA_HISTO
+ memset(&dev->histo, 0, sizeof(dev->histo));
+#endif
+ dev->ctx_start = 0;
+ dev->lck_start = 0;
+
+ dev->buf_rp = dev->buf;
+ dev->buf_wp = dev->buf;
+ dev->buf_end = dev->buf + DRM_BSZ;
+ dev->buf_async = NULL;
+ init_waitqueue_head(&dev->buf_readers);
+ init_waitqueue_head(&dev->buf_writers);
+
+ 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 i810_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) i810_irq_uninstall(dev);
+
+ down(&dev->struct_sem);
+ del_timer(&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 r128_cleanup is called. */
+ for (entry = dev->agp->memory; entry; entry = nexte) {
+ nexte = entry->next;
+ if (entry->bound) drm_unbind_agp(entry->memory);
+ drm_free_agp(entry->memory, entry->pages);
+ drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
+ }
+ dev->agp->memory = NULL;
+
+ if (dev->agp->acquired && drm_agp.release)
+ (*drm_agp.release)();
+
+ 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;
+ wake_up_interruptible(&dev->lock.lock_queue);
+ }
+ up(&dev->struct_sem);
+
+ return 0;
+}
+
+/* i810_init is called via init_module at module load time, or via
+ * linux/init/main.c (this is not currently supported). */
+
+int i810_init(void)
+{
+ int retcode;
+ drm_device_t *dev = &i810_device;
+
+ DRM_DEBUG("\n");
+
+ memset((void *)dev, 0, sizeof(*dev));
+ dev->count_lock = SPIN_LOCK_UNLOCKED;
+ sema_init(&dev->struct_sem, 1);
+
+#ifdef MODULE
+ drm_parse_options(i810);
+#endif
+ printk("doing misc_register\n");
+ if ((retcode = misc_register(&i810_misc))) {
+ DRM_ERROR("Cannot register \"%s\"\n", I810_NAME);
+ return retcode;
+ }
+ dev->device = MKDEV(MISC_MAJOR, i810_misc.minor);
+ dev->name = I810_NAME;
+
+ printk("doing mem init\n");
+ drm_mem_init();
+ printk("doing proc init\n");
+ drm_proc_init(dev);
+ printk("doing agp init\n");
+ dev->agp = drm_agp_init();
+ printk("doing ctxbitmap init\n");
+ if((retcode = drm_ctxbitmap_init(dev))) {
+ DRM_ERROR("Cannot allocate memory for context bitmap.\n");
+ drm_proc_cleanup();
+ misc_deregister(&i810_misc);
+ i810_takedown(dev);
+ return retcode;
+ }
+#if 0
+ printk("doing i810_dma_init\n");
+ i810_dma_init(dev);
+#endif
+
+ DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
+ I810_NAME,
+ I810_MAJOR,
+ I810_MINOR,
+ I810_PATCHLEVEL,
+ I810_DATE,
+ i810_misc.minor);
+
+ return 0;
+}
+
+/* i810_cleanup is called via cleanup_module at module unload time. */
+
+void i810_cleanup(void)
+{
+ drm_device_t *dev = &i810_device;
+
+ DRM_DEBUG("\n");
+
+ drm_proc_cleanup();
+ if (misc_deregister(&i810_misc)) {
+ DRM_ERROR("Cannot unload module\n");
+ } else {
+ DRM_INFO("Module unloaded\n");
+ }
+ drm_ctxbitmap_cleanup(dev);
+ i810_dma_cleanup(dev);
+ i810_takedown(dev);
+ if (dev->agp) {
+ drm_free(dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS);
+ dev->agp = NULL;
+ }
+}
+
+int i810_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 = I810_MAJOR;
+ version.version_minor = I810_MINOR;
+ version.version_patchlevel = I810_PATCHLEVEL;
+
+ DRM_COPY(version.name, I810_NAME);
+ DRM_COPY(version.date, I810_DATE);
+ DRM_COPY(version.desc, I810_DESC);
+
+ copy_to_user_ret((drm_version_t *)arg,
+ &version,
+ sizeof(version),
+ -EFAULT);
+ return 0;
+}
+
+int i810_open(struct inode *inode, struct file *filp)
+{
+ drm_device_t *dev = &i810_device;
+ int retcode = 0;
+
+ DRM_DEBUG("open_count = %d\n", dev->open_count);
+ if (!(retcode = drm_open_helper(inode, filp, dev))) {
+ MOD_INC_USE_COUNT;
+ atomic_inc(&dev->total_open);
+ spin_lock(&dev->count_lock);
+ if (!dev->open_count++) {
+ spin_unlock(&dev->count_lock);
+ return i810_setup(dev);
+ }
+ spin_unlock(&dev->count_lock);
+ }
+ return retcode;
+}
+
+int i810_release(struct inode *inode, struct file *filp)
+{
+ drm_file_t *priv = filp->private_data;
+ drm_device_t *dev = priv->dev;
+ int retcode = 0;
+
+ DRM_DEBUG("open_count = %d\n", dev->open_count);
+ if (!(retcode = drm_release(inode, filp))) {
+ MOD_DEC_USE_COUNT;
+ atomic_inc(&dev->total_close);
+ spin_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);
+ spin_unlock(&dev->count_lock);
+ return -EBUSY;
+ }
+ spin_unlock(&dev->count_lock);
+ return i810_takedown(dev);
+ }
+ spin_unlock(&dev->count_lock);
+ }
+ return retcode;
+}
+
+/* drm_ioctl is called whenever a process performs an ioctl on /dev/drm. */
+
+int i810_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
+ unsigned long arg)
+{
+ int nr = DRM_IOCTL_NR(cmd);
+ drm_file_t *priv = filp->private_data;
+ drm_device_t *dev = priv->dev;
+ int retcode = 0;
+ drm_ioctl_desc_t *ioctl;
+ drm_ioctl_t *func;
+
+ atomic_inc(&dev->ioctl_count);
+ atomic_inc(&dev->total_ioctl);
+ ++priv->ioctl_count;
+
+ DRM_DEBUG("pid = %d, cmd = 0x%02x, nr = 0x%02x, dev 0x%x, auth = %d\n",
+ current->pid, cmd, nr, dev->device, priv->authenticated);
+
+ if (nr >= I810_IOCTL_COUNT) {
+ retcode = -EINVAL;
+ } else {
+ ioctl = &i810_ioctls[nr];
+ func = ioctl->func;
+
+ if (!func) {
+ DRM_DEBUG("no function\n");
+ retcode = -EINVAL;
+ } else if ((ioctl->root_only && !capable(CAP_SYS_ADMIN))
+ || (ioctl->auth_needed && !priv->authenticated)) {
+ retcode = -EACCES;
+ } else {
+ retcode = (func)(inode, filp, cmd, arg);
+ }
+ }
+
+ atomic_dec(&dev->ioctl_count);
+ return retcode;
+}
+
+int i810_unlock(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_lock_t lock;
+
+ copy_from_user_ret(&lock, (drm_lock_t *)arg, sizeof(lock), -EFAULT);
+
+ if (lock.context == DRM_KERNEL_CONTEXT) {
+ DRM_ERROR("Process %d using kernel context %d\n",
+ current->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);
+ i810_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
+ atomic_inc(&dev->histo.lhld[drm_histogram_slot(get_cycles()
+ - dev->lck_start)]);
+#endif
+
+ return 0;
+}
diff --git a/linux-core/i810_drv.h b/linux-core/i810_drv.h
new file mode 100644
index 00000000..0f5f42bb
--- /dev/null
+++ b/linux-core/i810_drv.h
@@ -0,0 +1,76 @@
+/* i810_drv.h -- Private header for the Matrox g200/g400 driver -*- linux-c -*-
+ * Created: Mon Dec 13 01:50:01 1999 by jhartmann@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.
+ *
+ * Authors: Rickard E. (Rik) Faith <faith@precisioninsight.com>
+ * Jeff Hartmann <jhartmann@precisioninsight.com>
+ *
+ * $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/i810_drv.h,v 1.1 2000/02/11 17:26:05 dawes Exp $
+ */
+
+#ifndef _I810_DRV_H_
+#define _I810_DRV_H_
+
+ /* i810_drv.c */
+extern int i810_init(void);
+extern void i810_cleanup(void);
+extern int i810_version(struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg);
+extern int i810_open(struct inode *inode, struct file *filp);
+extern int i810_release(struct inode *inode, struct file *filp);
+extern int i810_ioctl(struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg);
+extern int i810_unlock(struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg);
+
+ /* i810_dma.c */
+extern int i810_dma_schedule(drm_device_t *dev, int locked);
+extern int i810_dma(struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg);
+extern int i810_irq_install(drm_device_t *dev, int irq);
+extern int i810_irq_uninstall(drm_device_t *dev);
+extern int i810_control(struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg);
+extern int i810_lock(struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg);
+extern void i810_dma_init(drm_device_t *dev);
+extern void i810_dma_cleanup(drm_device_t *dev);
+
+
+ /* i810_bufs.c */
+extern int i810_addbufs(struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg);
+extern int i810_infobufs(struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg);
+extern int i810_markbufs(struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg);
+extern int i810_freebufs(struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg);
+extern int i810_mapbufs(struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg);
+extern int i810_addmap(struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg);
+
+
+#endif
diff --git a/linux-core/mga_drv.c b/linux-core/mga_drv.c
new file mode 100644
index 00000000..8bc25617
--- /dev/null
+++ b/linux-core/mga_drv.c
@@ -0,0 +1,576 @@
+/* mga_drv.c -- Matrox g200/g400 driver -*- linux-c -*-
+ * Created: Mon Dec 13 01:56:22 1999 by jhartmann@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.
+ *
+ * Authors: Rickard E. (Rik) Faith <faith@precisioninsight.com>
+ * Jeff Hartmann <jhartmann@precisioninsight.com>
+ *
+ * $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/mga_drv.c,v 1.1 2000/02/11 17:26:07 dawes Exp $
+ *
+ */
+
+#define EXPORT_SYMTAB
+#include "drmP.h"
+#include "mga_drv.h"
+EXPORT_SYMBOL(mga_init);
+EXPORT_SYMBOL(mga_cleanup);
+
+#define MGA_NAME "mga"
+#define MGA_DESC "Matrox g200/g400"
+#define MGA_DATE "19991213"
+#define MGA_MAJOR 0
+#define MGA_MINOR 0
+#define MGA_PATCHLEVEL 1
+
+static drm_device_t mga_device;
+drm_ctx_t mga_res_ctx;
+
+static struct file_operations mga_fops = {
+ open: mga_open,
+ flush: drm_flush,
+ release: mga_release,
+ ioctl: mga_ioctl,
+ mmap: drm_mmap,
+ read: drm_read,
+ fasync: drm_fasync,
+};
+
+static struct miscdevice mga_misc = {
+ minor: MISC_DYNAMIC_MINOR,
+ name: MGA_NAME,
+ fops: &mga_fops,
+};
+
+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_clear_bufs, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_MGA_CLEAR)] = { mga_swap_bufs, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_MGA_ILOAD)] = { mga_iload, 1, 1 },
+};
+
+#define MGA_IOCTL_COUNT DRM_ARRAY_SIZE(mga_ioctls)
+
+#ifdef MODULE
+int init_module(void);
+void cleanup_module(void);
+static char *mga = NULL;
+
+MODULE_AUTHOR("Precision Insight, Inc., Cedar Park, Texas.");
+MODULE_DESCRIPTION("Matrox g200/g400");
+MODULE_PARM(mga, "s");
+
+/* init_module is called when insmod is used to load the module */
+
+int init_module(void)
+{
+ DRM_DEBUG("doing mga_init()\n");
+ return mga_init();
+}
+
+/* cleanup_module is called when rmmod is used to unload the module */
+
+void cleanup_module(void)
+{
+ mga_cleanup();
+}
+#endif
+
+#ifndef MODULE
+/* mga_setup is called by the kernel to parse command-line options passed
+ * via the boot-loader (e.g., LILO). It calls the insmod option routine,
+ * drm_parse_drm.
+ *
+ * This is not currently supported, since it requires changes to
+ * linux/init/main.c. */
+
+
+void __init mga_setup(char *str, int *ints)
+{
+ if (ints[0] != 0) {
+ DRM_ERROR("Illegal command line format, ignored\n");
+ return;
+ }
+ drm_parse_options(str);
+}
+#endif
+
+static int mga_setup(drm_device_t *dev)
+{
+ int i;
+
+ 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;
+ init_waitqueue_head(&dev->lock.lock_queue);
+ 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;
+ init_timer(&dev->timer);
+ init_waitqueue_head(&dev->context_wait);
+
+ dev->ctx_start = 0;
+ dev->lck_start = 0;
+
+ dev->buf_rp = dev->buf;
+ dev->buf_wp = dev->buf;
+ dev->buf_end = dev->buf + DRM_BSZ;
+ dev->buf_async = NULL;
+ init_waitqueue_head(&dev->buf_readers);
+ init_waitqueue_head(&dev->buf_writers);
+
+ 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);
+
+ down(&dev->struct_sem);
+ del_timer(&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->memory);
+ drm_free_agp(entry->memory, entry->pages);
+ drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
+ }
+ dev->agp->memory = NULL;
+
+ if (dev->agp->acquired && drm_agp.release)
+ (*drm_agp.release)();
+
+ 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;
+ wake_up_interruptible(&dev->lock.lock_queue);
+ }
+ up(&dev->struct_sem);
+
+ return 0;
+}
+
+/* mga_init is called via init_module at module load time, or via
+ * linux/init/main.c (this is not currently supported). */
+
+int mga_init(void)
+{
+ int retcode;
+ drm_device_t *dev = &mga_device;
+
+ DRM_DEBUG("\n");
+
+ memset((void *)dev, 0, sizeof(*dev));
+ dev->count_lock = SPIN_LOCK_UNLOCKED;
+ sema_init(&dev->struct_sem, 1);
+
+#ifdef MODULE
+ drm_parse_options(mga);
+#endif
+ DRM_DEBUG("doing misc_register\n");
+ if ((retcode = misc_register(&mga_misc))) {
+ DRM_ERROR("Cannot register \"%s\"\n", MGA_NAME);
+ return retcode;
+ }
+ dev->device = MKDEV(MISC_MAJOR, mga_misc.minor);
+ dev->name = MGA_NAME;
+
+ DRM_DEBUG("doing mem init\n");
+ drm_mem_init();
+ DRM_DEBUG("doing proc init\n");
+ drm_proc_init(dev);
+ DRM_DEBUG("doing agp init\n");
+ dev->agp = drm_agp_init();
+ DRM_DEBUG("doing ctxbitmap init\n");
+ if((retcode = drm_ctxbitmap_init(dev))) {
+ DRM_ERROR("Cannot allocate memory for context bitmap.\n");
+ drm_proc_cleanup();
+ misc_deregister(&mga_misc);
+ 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,
+ mga_misc.minor);
+
+ return 0;
+}
+
+/* mga_cleanup is called via cleanup_module at module unload time. */
+
+void mga_cleanup(void)
+{
+ drm_device_t *dev = &mga_device;
+
+ DRM_DEBUG("\n");
+
+ drm_proc_cleanup();
+ if (misc_deregister(&mga_misc)) {
+ DRM_ERROR("Cannot unload module\n");
+ } else {
+ DRM_INFO("Module unloaded\n");
+ }
+ drm_ctxbitmap_cleanup(dev);
+ mga_dma_cleanup(dev);
+ mga_takedown(dev);
+ if (dev->agp) {
+ drm_free(dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS);
+ dev->agp = NULL;
+ }
+}
+
+int mga_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 = 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);
+
+ copy_to_user_ret((drm_version_t *)arg,
+ &version,
+ sizeof(version),
+ -EFAULT);
+ return 0;
+}
+
+int mga_open(struct inode *inode, struct file *filp)
+{
+ drm_device_t *dev = &mga_device;
+ int retcode = 0;
+
+ DRM_DEBUG("open_count = %d\n", dev->open_count);
+ if (!(retcode = drm_open_helper(inode, filp, dev))) {
+ MOD_INC_USE_COUNT;
+ atomic_inc(&dev->total_open);
+ spin_lock(&dev->count_lock);
+ if (!dev->open_count++) {
+ spin_unlock(&dev->count_lock);
+ return mga_setup(dev);
+ }
+ spin_unlock(&dev->count_lock);
+ }
+ return retcode;
+}
+
+int mga_release(struct inode *inode, struct file *filp)
+{
+ drm_file_t *priv = filp->private_data;
+ drm_device_t *dev = priv->dev;
+ int retcode = 0;
+
+ DRM_DEBUG("open_count = %d\n", dev->open_count);
+ if (!(retcode = drm_release(inode, filp))) {
+ MOD_DEC_USE_COUNT;
+ atomic_inc(&dev->total_close);
+ spin_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);
+ spin_unlock(&dev->count_lock);
+ return -EBUSY;
+ }
+ spin_unlock(&dev->count_lock);
+ return mga_takedown(dev);
+ }
+ spin_unlock(&dev->count_lock);
+ }
+ return retcode;
+}
+
+/* drm_ioctl is called whenever a process performs an ioctl on /dev/drm. */
+
+int mga_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
+ unsigned long arg)
+{
+ int nr = DRM_IOCTL_NR(cmd);
+ drm_file_t *priv = filp->private_data;
+ drm_device_t *dev = priv->dev;
+ int retcode = 0;
+ drm_ioctl_desc_t *ioctl;
+ drm_ioctl_t *func;
+
+ atomic_inc(&dev->ioctl_count);
+ atomic_inc(&dev->total_ioctl);
+ ++priv->ioctl_count;
+
+ DRM_DEBUG("pid = %d, cmd = 0x%02x, nr = 0x%02x, dev 0x%x, auth = %d\n",
+ current->pid, cmd, nr, dev->device, priv->authenticated);
+
+ 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 && !capable(CAP_SYS_ADMIN))
+ || (ioctl->auth_needed && !priv->authenticated)) {
+ retcode = -EACCES;
+ } else {
+ retcode = (func)(inode, filp, cmd, arg);
+ }
+ }
+
+ atomic_dec(&dev->ioctl_count);
+ return retcode;
+}
+
+int mga_unlock(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_lock_t lock;
+
+ copy_from_user_ret(&lock, (drm_lock_t *)arg, sizeof(lock), -EFAULT);
+
+ if (lock.context == DRM_KERNEL_CONTEXT) {
+ DRM_ERROR("Process %d using kernel context %d\n",
+ current->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);
+ mga_dma_schedule(dev, 1);
+
+ 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 2024-12-25 18:07:38 +0000