diff options
Diffstat (limited to 'nx-X11/extras/drm/linux/savage_drv.c')
| -rw-r--r-- | nx-X11/extras/drm/linux/savage_drv.c | 255 |
1 files changed, 255 insertions, 0 deletions
diff --git a/nx-X11/extras/drm/linux/savage_drv.c b/nx-X11/extras/drm/linux/savage_drv.c new file mode 100644 index 000000000..0c5188741 --- /dev/null +++ b/nx-X11/extras/drm/linux/savage_drv.c @@ -0,0 +1,255 @@ +/* + * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved. + * Copyright 2001-2003 S3 Graphics, Inc. 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, sub license, + * 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 NON-INFRINGEMENT. IN NO EVENT SHALL + * VIA, S3 GRAPHICS, 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. + */ + +#include <linux/config.h> +#include "savage.h" +#include "drmP.h" +#include "savage_drm.h" +#include "savage_drv.h" + +#define DRIVER_AUTHOR "John Zhao, S3 Graphics Inc." + +#define DRIVER_NAME "savage" +#define DRIVER_DESC "Savage4 Family" +#define DRIVER_DATE "20011023" + +#define DRIVER_MAJOR 1 +#define DRIVER_MINOR 0 +#define DRIVER_PATCHLEVEL 0 + +/* Currently Savage4 not implement DMA */ +/* mark off by Jiayo Hsu, Oct. 23, 2001*/ + + +#if SAVAGE_CMD_DMA /* Check the 3D driver, and we need to fix this anyway */ + +#define DRIVER_IOCTLS \ + [DRM_IOCTL_NR(DRM_IOCTL_SAVAGE_ALLOC_CONTINUOUS_MEM)] \ + = {savage_alloc_continuous_mem,1,0},\ + [DRM_IOCTL_NR( DRM_IOCTL_SAVAGE_GET_PHYSICS_ADDRESS)] \ + = {savage_get_physics_address,1,0},\ + [DRM_IOCTL_NR(DRM_IOCTL_SAVAGE_FREE_CONTINUOUS_MEM)] \ + = {savage_free_cont_mem,1,0} + +int savage_alloc_continuous_mem(struct inode *inode, struct file *filp, + unsigned int cmd, unsigned long arg) +{ + drm_savage_alloc_cont_mem_t cont_mem; + unsigned long size,addr; + void * ret; + int i; + mem_map_t *p; + pgprot_t flags; + + /* add to list */ + drm_file_t *priv = filp->private_data; + drm_device_t *dev = priv->dev; + drm_map_t *map; + drm_map_list_t *list; + + if (copy_from_user(&cont_mem,(drm_savage_alloc_cont_mem_t *)arg,sizeof(cont_mem))) + return -EFAULT; + + map = DRM(alloc)( sizeof(*map), DRM_MEM_MAPS ); + if ( !map ) + return -ENOMEM; + + /*check the parameters*/ + if (cont_mem.size <= 0 ) + return -EINVAL; + + size = cont_mem.type * cont_mem.size; + printk("[drm]JTLIsize = %lu\n",size); + + ret = (void *)__get_free_pages(GFP_KERNEL, get_order(size)); + if (ret == NULL) + { + printk("Kalloc error\n"); + return 0; + } + + /*set the reserverd flag so that the remap_page_range can map these page*/ + for(i=0,p=virt_to_page(ret);i< size /PAGE_SIZE; i++,p++) + SetPageReserved(p); + + cont_mem.phyaddress = virt_to_bus(ret); + cont_mem.location = DRM_SAVAGE_MEM_LOCATION_PCI; /* pci only at present*/ + + + /*Map the memory to user space*/ + down_write(¤t->mm->mmap_sem); + addr=do_mmap(NULL,0,size,PROT_READ|PROT_WRITE,MAP_PRIVATE,cont_mem.phyaddress); + if (addr<=0) + return -EFAULT; + pgprot_val(flags)=_PAGE_PRESENT | _PAGE_RW |_PAGE_USER ; + if (remap_page_range(addr,cont_mem.phyaddress,size,flags)) + return -EFAULT; + up_write(¤t->mm->mmap_sem); + + for(i=0,p=virt_to_page(ret);i< size /PAGE_SIZE; i++,p++) + ClearPageReserved(p); + + cont_mem.linear = addr; + + /*map list*/ + map->handle = ret; /* to distinguish with other*/ + map->offset = cont_mem.phyaddress; + map->size = size; + map->mtrr=-1; + /*map-flags,type??*/ + + list = DRM(alloc)(sizeof(*list), DRM_MEM_MAPS); + if(!list) { + DRM(free)(map, sizeof(*map), DRM_MEM_MAPS); + return -EINVAL; + } + memset(list, 0, sizeof(*list)); + list->map = map; + + down(&dev->struct_sem); + list_add(&list->head, &dev->maplist->head); + up(&dev->struct_sem); + + if (copy_to_user((drm_savage_alloc_cont_mem_t *)arg,&cont_mem,sizeof(cont_mem))) + return -EFAULT; + + for(i=0,p=virt_to_page(ret);i< size /PAGE_SIZE; i++,p++) + atomic_set(&p->count,1); + + return 1;/*success*/ +} + +int savage_get_physics_address(struct inode *inode, struct file *filp, + unsigned int cmd, unsigned long arg) +{ + + drm_savage_get_physcis_address_t req; + unsigned long buf; + pgd_t *pgd; + pmd_t *pmd; + pte_t *pte; + struct mm_struct *mm; + + if (copy_from_user(&req,(drm_savage_get_physcis_address_t *)arg,sizeof(req))) + return -EFAULT; + buf = req.v_address; + + /*What kind of virtual address ?*/ + if (buf >= (unsigned long)high_memory) + mm = &init_mm; + else + mm = current->mm; + +#ifdef LINUX_24 + spin_lock(&mm->page_table_lock); +#endif + + pgd=pgd_offset(mm,buf); + pmd=pmd_offset(pgd,buf); + pte=pte_offset_map(pmd,buf); + + if (!pte_present(*pte)) + return -EFAULT; + + req.p_address = ((pte_val(*pte) &PAGE_MASK) |( buf&(PAGE_SIZE-1))); + + if (copy_to_user((drm_savage_get_physcis_address_t *)arg,&req,sizeof(req))) + return -EFAULT; + return 1; +} + +/*free the continuous memory*/ +int savage_free_cont_mem(struct inode *inode, struct file *filp, + unsigned int cmd, unsigned long arg) +{ + drm_savage_alloc_cont_mem_t cont_mem; + unsigned long size; + + /*map list */ + drm_file_t *priv = filp->private_data; + drm_device_t *dev = priv->dev; + drm_map_t *map; + struct list_head *list; + drm_map_list_t *r_list = NULL; + + if (copy_from_user(&cont_mem,(drm_savage_alloc_cont_mem_t *)arg,sizeof(cont_mem))) + return -EFAULT; + size = cont_mem.type * cont_mem.size; + if (size <= 0) + return -EINVAL; + + /* find the map in the list */ + list_for_each(list,&dev->maplist->head) + { + r_list = (drm_map_list_t *) list; + + if(r_list->map && + r_list->map->offset == cont_mem.phyaddress ) + break; + } + /*find none*/ + if(list == (&dev->maplist->head)) { + up(&dev->struct_sem); + return -EINVAL; + } + map = r_list->map; + list_del(list); + DRM(free)(list, sizeof(*list), DRM_MEM_MAPS); + + /*unmap the user space */ +#ifdef DO_MUNMAP_4_ARGS + if ( do_munmap(current->mm,cont_mem.linear,size,1)!=0) +#else + if ( do_munmap(current->mm,cont_mem.linear,size)!=0) +#endif + return -EFAULT; + /*free the page*/ + free_pages((unsigned long)map->handle, get_order(size)); + + return 1; +} +#else /* SAVAGE_CMD_DMA */ +#define DRIVER_IOCTLS +#endif /* SAVAGE_CMD_DMA */ + +#if 0 + +#define DRIVER_IOCTLS \ + [DRM_IOCTL_NR(DRM_IOCTL_DMA)] = { mga_dma_buffers, 1, 0 }, \ + [DRM_IOCTL_NR(DRM_IOCTL_MGA_INIT)] = { mga_dma_init, 1, 1 }, \ + [DRM_IOCTL_NR(DRM_IOCTL_MGA_FLUSH)] = { mga_dma_flush, 1, 0 }, \ + [DRM_IOCTL_NR(DRM_IOCTL_MGA_RESET)] = { mga_dma_reset, 1, 0 }, \ + [DRM_IOCTL_NR(DRM_IOCTL_MGA_SWAP)] = { mga_dma_swap, 1, 0 }, \ + [DRM_IOCTL_NR(DRM_IOCTL_MGA_CLEAR)] = { mga_dma_clear, 1, 0 }, \ + [DRM_IOCTL_NR(DRM_IOCTL_MGA_VERTEX)] = { mga_dma_vertex, 1, 0 }, \ + [DRM_IOCTL_NR(DRM_IOCTL_MGA_INDICES)] = { mga_dma_indices, 1, 0 }, \ + [DRM_IOCTL_NR(DRM_IOCTL_MGA_ILOAD)] = { mga_dma_iload, 1, 0 }, \ + [DRM_IOCTL_NR(DRM_IOCTL_MGA_BLIT)] = { mga_dma_blit, 1, 0 }, + + +#endif /* end #if 0 */ + +#include "drm_core.h" + + |