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Diffstat (limited to 'linux/drm_agp_tmp.h')
| -rw-r--r-- | linux/drm_agp_tmp.h | 553 |
1 files changed, 553 insertions, 0 deletions
diff --git a/linux/drm_agp_tmp.h b/linux/drm_agp_tmp.h new file mode 100644 index 00000000..4b52ed4f --- /dev/null +++ b/linux/drm_agp_tmp.h @@ -0,0 +1,553 @@ +/** + * \file drm_agp_tmp.h + * DRM support for AGP/GART backend + * + * \author Rickard E. (Rik) Faith <faith@valinux.com> + * \author Gareth Hughes <gareth@valinux.com> + */ + +/* + * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. + * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * VA LINUX SYSTEMS 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. + */ + + + +#if __REALLY_HAVE_AGP + +#define __NO_VERSION__ +#include "drmP.h" +#include <linux/module.h> + + +/** + * Pointer to the drm_agp_t structure made available by the AGPGART module. + */ +static const drm_agp_t *drm_agp = NULL; + + +/**********************************************************************/ +/** \name drm_agp wrappers + * + * These functions are thin wrappers around the respective methods in drm_agp + * which are exposed by the AGPGART module. + * + * \todo Put these in a header inline. + */ + +/** + * Acquire the AGP device. + */ +int DRM(agp_acquire)(void) +{ + return drm_agp->acquire(); +} + +/** + * Release the AGP device. + */ +void DRM(agp_release)(void) +{ + if (drm_agp->release) + drm_agp->release(); +} + +/** + * Enable the AGP bus. + */ +void DRM(agp_enable)(unsigned mode) +{ + if (drm_agp->enable) + drm_agp->enable(mode); +} + +/** + * Allocate AGP memory. + * + * Not meant to be called directly. Use agp_alloc() instead, which can provide + * some debugging features. + */ +agp_memory *DRM(agp_allocate_memory)(size_t pages, u32 type) +{ + if (!drm_agp->allocate_memory) + return NULL; + return drm_agp->allocate_memory(pages, type); +} + +/** + * Free AGP memory. + * + * Not meant to be called directly. Use agp_free() instead, which can provide + * some debugging features. + */ +int DRM(agp_free_memory)(agp_memory *handle) +{ + if (!handle || !drm_agp->free_memory) + return 0; + drm_agp->free_memory(handle); + return 1; +} + +/** + * Bind AGP memory. + * + * Not meant to be called directly. Use agp_bind() instead, which can provide + * some debugging features. + */ +int DRM(agp_bind_memory)(agp_memory *handle, off_t start) +{ + if (!handle || !drm_agp->bind_memory) + return -EINVAL; + return drm_agp->bind_memory(handle, start); +} + +/** + * Bind AGP memory. + * + * Not meant to be called directly. Use agp_unbind() instead, which can provide + * some debugging features. + */ +int DRM(agp_unbind_memory)(agp_memory *handle) +{ + if (!handle || !drm_agp->unbind_memory) + return -EINVAL; + return drm_agp->unbind_memory(handle); +} + +/**@}*/ + + +/**********************************************************************/ +/** \name Ioctl's */ + +/** + * Acquire the AGP device. + * + * \param inode device inode. + * \param filp file pointer. + * \param cmd command. + * \param arg user argument. + * \return zero on success or a negative number on failure. + * + * Verifies the AGP device hasn't been acquired before and calls + * drm_acquire(). + */ +int DRM(agp_acquire_ioctl)(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; + int retcode; + + if (!dev->agp || dev->agp->acquired || !drm_agp->acquire) + return -EINVAL; + if ((retcode = DRM(agp_acquire)())) return retcode; + dev->agp->acquired = 1; + return 0; +} + +/** + * Release the AGP device. + * + * \param inode device inode. + * \param filp file pointer. + * \param cmd command. + * \param arg user argument. + * \return zero on success or a negative number on failure. + * + * Verifies the AGP device has been acquired and calls drm_agp->release(). + */ +int DRM(agp_release_ioctl)(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; + + if (!dev->agp || !dev->agp->acquired || !drm_agp->release) + return -EINVAL; + drm_agp->release(); + dev->agp->acquired = 0; + return 0; + +} + +/** + * Get AGP information. + * + * \param inode device inode. + * \param filp file pointer. + * \param cmd command. + * \param arg pointer to an (output) drm_agp_info structure. + * \return zero on success or a negative number on failure. + * + * Verifies the AGP device has been initialized and acquired and fills in the + * drm_agp_info structure with the information in drm_agp_head::agp_info. + */ +int DRM(agp_info_ioctl)(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; + agp_kern_info *kern; + drm_agp_info_t info; + + if (!dev->agp || !dev->agp->acquired || !drm_agp->copy_info) + return -EINVAL; + + kern = &dev->agp->agp_info; + info.agp_version_major = kern->version.major; + info.agp_version_minor = kern->version.minor; + info.mode = kern->mode; + info.aperture_base = kern->aper_base; + info.aperture_size = kern->aper_size * 1024 * 1024; + info.memory_allowed = kern->max_memory << PAGE_SHIFT; + info.memory_used = kern->current_memory << PAGE_SHIFT; + info.id_vendor = kern->device->vendor; + info.id_device = kern->device->device; + + if (copy_to_user((drm_agp_info_t *)arg, &info, sizeof(info))) + return -EFAULT; + return 0; +} + +/** + * Enable the AGP bus. + * + * \param inode device inode. + * \param filp file pointer. + * \param cmd command. + * \param arg pointer to a drm_agp_mode structure. + * \return zero on success or a negative number on failure. + * + * Verifies the AGP device has been acquired, and calls + * agp_enable(). + */ +int DRM(agp_enable_ioctl)(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_agp_mode_t mode; + + if (!dev->agp || !dev->agp->acquired || !drm_agp->enable) + return -EINVAL; + + if (copy_from_user(&mode, (drm_agp_mode_t *)arg, sizeof(mode))) + return -EFAULT; + + dev->agp->mode = mode.mode; + DRM(agp_enable)(mode.mode); + dev->agp->base = dev->agp->agp_info.aper_base; + dev->agp->enabled = 1; + return 0; +} + +/** + * Allocate AGP memory. + * + * \param inode device inode. + * \param filp file pointer. + * \param cmd command. + * \param arg pointer to a drm_agp_buffer structure. + * \return zero on success or a negative number on failure. + * + * Verifies the AGP device is present and has been acquired, allocates the + * memory via alloc_agp() and creates a drm_agp_mem entry for it. + */ +int DRM(agp_alloc_ioctl)(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_agp_buffer_t request; + drm_agp_mem_t *entry; + agp_memory *memory; + unsigned long pages; + u32 type; + + if (!dev->agp || !dev->agp->acquired) return -EINVAL; + if (copy_from_user(&request, (drm_agp_buffer_t *)arg, sizeof(request))) + return -EFAULT; + if (!(entry = DRM(alloc)(sizeof(*entry), DRM_MEM_AGPLISTS))) + return -ENOMEM; + + memset(entry, 0, sizeof(*entry)); + + pages = (request.size + PAGE_SIZE - 1) / PAGE_SIZE; + type = (u32) request.type; + + if (!(memory = DRM(agp_alloc)(pages, type))) { + DRM(free)(entry, sizeof(*entry), DRM_MEM_AGPLISTS); + return -ENOMEM; + } + + entry->handle = (unsigned long)memory->key; + entry->memory = memory; + entry->bound = 0; + entry->pages = pages; + entry->prev = NULL; + entry->next = dev->agp->memory; + if (dev->agp->memory) dev->agp->memory->prev = entry; + dev->agp->memory = entry; + + request.handle = entry->handle; + request.physical = memory->physical; + + if (copy_to_user((drm_agp_buffer_t *)arg, &request, sizeof(request))) { + dev->agp->memory = entry->next; + dev->agp->memory->prev = NULL; + DRM(agp_free)(memory, pages); + DRM(free)(entry, sizeof(*entry), DRM_MEM_AGPLISTS); + return -EFAULT; + } + return 0; +} + +/** + * Search for the AGP memory entry associated with a handle. + * + * \param dev DRM device structure. + * \param handle AGP memory handle. + * \return pointer to the drm_agp_mem structure associated with \p handle. + * + * Walks through drm_agp_head::memory until finding a matching handle. + */ +static drm_agp_mem_t *DRM(agp_lookup_entry)(drm_device_t *dev, + unsigned long handle) +{ + drm_agp_mem_t *entry; + + for (entry = dev->agp->memory; entry; entry = entry->next) { + if (entry->handle == handle) return entry; + } + return NULL; +} + +/** + * Unbind AGP memory from the GATT. + * + * \param inode device inode. + * \param filp file pointer. + * \param cmd command. + * \param arg pointer to a drm_agp_binding structure. + * \return zero on success or a negative number on failure. + * + * Verifies the AGP device is present and acquired, looks-up the AGP memory + * entry and passes it to the unbind_agp() function. + */ +int DRM(agp_unbind_ioctl)(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_agp_binding_t request; + drm_agp_mem_t *entry; + int ret; + + if (!dev->agp || !dev->agp->acquired) return -EINVAL; + if (copy_from_user(&request, (drm_agp_binding_t *)arg, sizeof(request))) + return -EFAULT; + if (!(entry = DRM(agp_lookup_entry)(dev, request.handle))) + return -EINVAL; + if (!entry->bound) return -EINVAL; + ret = DRM(agp_unbind)(entry->memory); + if (ret == 0) + entry->bound = 0; + return ret; +} + +/** + * Bind AGP memory into the GATT + * + * \param inode device inode. + * \param filp file pointer. + * \param cmd command. + * \param arg pointer to a drm_agp_binding structure. + * \return zero on success or a negative number on failure. + * + * Verifies the AGP device is present and has been acquired and that no memory + * is currently bound into the GATT. Looks-up the AGP memory entry and passes + * it to bind_agp() function. + */ +int DRM(agp_bind_ioctl)(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_agp_binding_t request; + drm_agp_mem_t *entry; + int retcode; + int page; + + if (!dev->agp || !dev->agp->acquired || !drm_agp->bind_memory) + return -EINVAL; + if (copy_from_user(&request, (drm_agp_binding_t *)arg, sizeof(request))) + return -EFAULT; + if (!(entry = DRM(agp_lookup_entry)(dev, request.handle))) + return -EINVAL; + if (entry->bound) return -EINVAL; + page = (request.offset + PAGE_SIZE - 1) / PAGE_SIZE; + if ((retcode = DRM(agp_bind)(entry->memory, page))) return retcode; + entry->bound = dev->agp->base + (page << PAGE_SHIFT); + DRM_DEBUG("base = 0x%lx entry->bound = 0x%lx\n", + dev->agp->base, entry->bound); + return 0; +} + +/** + * Free AGP memory. + * + * \param inode device inode. + * \param filp file pointer. + * \param cmd command. + * \param arg pointer to a drm_agp_buffer structure. + * \return zero on success or a negative number on failure. + * + * Verifies the AGP device is present and has been acquired and looks up the + * AGP memory entry. If the memory it's currently bound, unbind it via + * unbind_agp(). Frees it via free_agp() as well as the entry itself + * and unlinks from the doubly linked list it's inserted in. + */ +int DRM(agp_free_ioctl)(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_agp_buffer_t request; + drm_agp_mem_t *entry; + + if (!dev->agp || !dev->agp->acquired) return -EINVAL; + if (copy_from_user(&request, (drm_agp_buffer_t *)arg, sizeof(request))) + return -EFAULT; + if (!(entry = DRM(agp_lookup_entry)(dev, request.handle))) + return -EINVAL; + if (entry->bound) DRM(agp_unbind)(entry->memory); + + if (entry->prev) entry->prev->next = entry->next; + else dev->agp->memory = entry->next; + if (entry->next) entry->next->prev = entry->prev; + DRM(agp_free)(entry->memory, entry->pages); + DRM(free)(entry, sizeof(*entry), DRM_MEM_AGPLISTS); + return 0; +} + +/*@}*/ + + +/**********************************************************************/ +/** \name Initialization and cleanup */ +/*@{*/ + +/** + * Initialize the global AGP resources. + * + * Gets the drm_agp_t structure which is made available by the agpgart module + * via the inter_module_* functions. + */ +void DRM(agp_init)(void) +{ + drm_agp = (drm_agp_t *)inter_module_get("drm_agp"); +} + +/** + * Free the global AGP resources. + * + * Releases the pointer in ::drm_agp. + */ +void DRM(agp_cleanup)(void) +{ + if (drm_agp) { + inter_module_put("drm_agp"); + drm_agp = NULL; + } +} + +/** + * Initialize the device AGP resources. + * + * Creates and initializes a drm_agp_head structure in drm_device_t::agp. + */ +void DRM(agp_init_dev)(drm_device_t *dev) +{ + drm_agp_head_t *head = NULL; + + if (!(head = DRM(alloc)(sizeof(*head), DRM_MEM_AGPLISTS))) + return; + + memset((void *)head, 0, sizeof(*head)); + drm_agp->copy_info(&head->agp_info); + if (head->agp_info.chipset == NOT_SUPPORTED) { + DRM(free)(head, sizeof(*head), DRM_MEM_AGPLISTS); + } + head->memory = NULL; +#if LINUX_VERSION_CODE <= 0x020408 + head->cant_use_aperture = 0; + head->page_mask = ~(0xfff); +#else + head->cant_use_aperture = head->agp_info.cant_use_aperture; + head->page_mask = head->agp_info.page_mask; +#endif + + DRM_INFO("AGP %d.%d aperture @ 0x%08lx %ZuMB\n", + head->agp_info.version.major, + head->agp_info.version.minor, + head->agp_info.aper_base, + head->agp_info.aper_size); + + dev->agp = head; +} + +/** + * Free the device AGP resources. + */ +void DRM(agp_cleanup_dev)(drm_device_t *dev) +{ + if ( dev->agp ) { + drm_agp_mem_t *entry; + drm_agp_mem_t *nexte; + + /* Remove AGP resources, but leave dev->agp + intact until drv_cleanup is called. */ + for ( entry = dev->agp->memory ; entry ; entry = nexte ) { + nexte = entry->next; + if ( entry->bound ) DRM(agp_unbind)( entry->memory ); + DRM(agp_free)( entry->memory, entry->pages ); + DRM(free)( entry, sizeof(*entry), DRM_MEM_AGPLISTS ); + } + dev->agp->memory = NULL; + + if ( dev->agp->acquired ) + DRM(agp_release)(); + + dev->agp->acquired = 0; + dev->agp->enabled = 0; + + DRM(free)( dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS ); + dev->agp = NULL; + } +} + +/*@}*/ + + +#endif /* __REALLY_HAVE_AGP */ |