/[dynamips]/upstream/dynamips-0.2.6-RC3/device.c
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Diff of /upstream/dynamips-0.2.6-RC3/device.c

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upstream/dynamips-0.2.6-RC2/device.c revision 3 by dpavlin, Sat Oct 6 16:05:34 2007 UTC upstream/dynamips-0.2.6-RC3/device.c revision 4 by dpavlin, Sat Oct 6 16:06:49 2007 UTC
# Line 22  Line 22 
22    
23  #define DEBUG_DEV_ACCESS  0  #define DEBUG_DEV_ACCESS  0
24    
 /* Map a memory zone from a file */  
 u_char *memzone_map_file(int fd,size_t len)  
 {  
    return(mmap(NULL,len,PROT_READ|PROT_WRITE,MAP_SHARED,fd,(off_t)0));  
 }  
   
 /* Create a file to serve as a memory zone */  
 int memzone_create_file(char *filename,size_t len,u_char **ptr)  
 {  
    int fd;  
   
    if ((fd = open(filename,O_CREAT|O_RDWR,S_IRWXU)) == -1) {  
       perror("memzone_create_file: open");  
       return(-1);  
    }  
   
    if (ftruncate(fd,len) == -1) {  
       perror("memzone_create_file: ftruncate");  
       return(-1);  
    }  
     
    *ptr = memzone_map_file(fd,len);  
   
    if (!*ptr) {  
       close(fd);  
       fd = -1;  
    }  
   
    return(fd);  
 }  
   
25  /* Get device by ID */  /* Get device by ID */
26  struct vdevice *dev_get_by_id(vm_instance_t *vm,u_int dev_id)  struct vdevice *dev_get_by_id(vm_instance_t *vm,u_int dev_id)
27  {  {
# Line 217  void *dev_access(cpu_mips_t *cpu,u_int d Line 186  void *dev_access(cpu_mips_t *cpu,u_int d
186     return(dev->handler(cpu,dev,offset,op_size,op_type,data));     return(dev->handler(cpu,dev,offset,op_size,op_type,data));
187  }  }
188    
189    /* Synchronize memory for a memory-mapped (mmap) device */
190    int dev_sync(struct vdevice *dev)
191    {
192       if (!dev || !dev->host_addr)
193          return(-1);
194    
195       return(msync((void *)dev->host_addr,dev->phys_len,MS_SYNC));
196    }
197    
198  /* Remap a device at specified physical address */  /* Remap a device at specified physical address */
199  struct vdevice *dev_remap(char *name,struct vdevice *orig,  struct vdevice *dev_remap(char *name,struct vdevice *orig,
200                            m_uint64_t paddr,m_uint32_t len)                            m_uint64_t paddr,m_uint32_t len)
# Line 251  struct vdevice *dev_create_ram(vm_instan Line 229  struct vdevice *dev_create_ram(vm_instan
229    
230     if (filename) {     if (filename) {
231        dev->fd = memzone_create_file(filename,dev->phys_len,&ram_ptr);        dev->fd = memzone_create_file(filename,dev->phys_len,&ram_ptr);
232    
233          if (dev->fd == -1) {
234             perror("dev_create_ram: mmap");
235             free(dev);
236             return NULL;
237          }
238          
239        dev->host_addr = (m_iptr_t)ram_ptr;        dev->host_addr = (m_iptr_t)ram_ptr;
240     } else {     } else {
241        dev->host_addr = (m_iptr_t)m_memalign(4096,dev->phys_len);        dev->host_addr = (m_iptr_t)m_memalign(4096,dev->phys_len);
242     }     }
243        
244       if (!dev->host_addr) {
245          free(dev);
246          return NULL;
247       }
248    
249       vm_bind_device(vm,dev);
250       return dev;
251    }
252    
253    /* Create a ghosted RAM device */
254    struct vdevice *
255    dev_create_ghost_ram(vm_instance_t *vm,char *name,char *filename,
256                         m_uint64_t paddr,m_uint32_t len)
257    {
258       struct vdevice *dev;
259       u_char *ram_ptr;
260    
261       if (!(dev = dev_create(name)))
262          return NULL;
263    
264       dev->phys_addr = paddr;
265       dev->phys_len = len;
266       dev->flags = VDEVICE_FLAG_CACHING;
267    
268       dev->fd = memzone_open_cow_file(filename,dev->phys_len,&ram_ptr);
269       if (dev->fd == -1) {
270          perror("dev_create_ghost_ram: mmap");
271          free(dev);
272          return NULL;
273       }
274    
275       if (!(dev->host_addr = (m_iptr_t)ram_ptr)) {
276          free(dev);
277          return NULL;
278       }
279    
280     vm_bind_device(vm,dev);     vm_bind_device(vm,dev);
281     return dev;     return dev;
282  }  }
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