diff options
author | Kevin E Martin <kem@kem.org> | 2000-02-22 15:43:59 +0000 |
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committer | Kevin E Martin <kem@kem.org> | 2000-02-22 15:43:59 +0000 |
commit | 7a9b291ab55dd9dcfeb35217f6105ad57c94f433 (patch) | |
tree | 8941caba3a974912d8abc9f2f7b307c82ef5a54a /linux/mga_drv.c | |
parent | 9a1197da5cd84624f5b0741e0a20fee60eb8b4f1 (diff) |
Import of XFree86 3.9.18X_3_9_18
Diffstat (limited to 'linux/mga_drv.c')
-rw-r--r-- | linux/mga_drv.c | 576 |
1 files changed, 576 insertions, 0 deletions
diff --git a/linux/mga_drv.c b/linux/mga_drv.c new file mode 100644 index 000000000..8bc25617e --- /dev/null +++ b/linux/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; +} |