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authorReinhard Tartler <siretart@tauware.de>2011-10-10 17:43:39 +0200
committerReinhard Tartler <siretart@tauware.de>2011-10-10 17:43:39 +0200
commitf4092abdf94af6a99aff944d6264bc1284e8bdd4 (patch)
tree2ac1c9cc16ceb93edb2c4382c088dac5aeafdf0f /nx-X11/extras/drm/linux/savage_drv.c
parenta840692edc9c6d19cd7c057f68e39c7d95eb767d (diff)
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Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1
Summary: Imported nx-X11-3.1.0-1.tar.gz Keywords: Imported nx-X11-3.1.0-1.tar.gz into Git repository
Diffstat (limited to 'nx-X11/extras/drm/linux/savage_drv.c')
-rw-r--r--nx-X11/extras/drm/linux/savage_drv.c255
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(&current->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(&current->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"
+
+