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/*
* 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"
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