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-rw-r--r--linux-core/mga_drv.c576
1 files changed, 576 insertions, 0 deletions
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;
+}
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