contrib/octeon-sdk/cvmx-shmem.c

182  * @param void(*f)(dscptr) the function to be invoked for every descriptor
187 static struct cvmx_shmem_dscptr *__smdr_iterator(struct cvmx_shmem_dscptr *(*f)(struct cvmx_shmem_dscptr *dscptr, void *p), void *param )
189     struct cvmx_shmem_dscptr *d, *dscptr = NULL;
197         if ((dscptr = (*f)(d, param)) != NULL)
201    return dscptr;
209  * @param dscptr  descriptor passed in by the iterator
215 static struct cvmx_shmem_dscptr *__cvmx_shmem_smdr_match_name(struct cvmx_shmem_dscptr *dscptr, void *name)
220     if (dscptr->owner == CVMX_SHMEM_OWNER_NONE)
223     if (strcmp(dscptr->name, name_to_match) == 0)
224         ret =  dscptr;
247  * @param dscptr  descriptor passed in by the iterator
253 static struct cvmx_shmem_dscptr *__cvmx_shmem_smdr_is_free(struct cvmx_shmem_dscptr* dscptr, void *nouse)
255     if (dscptr->owner == CVMX_SHMEM_OWNER_NONE)
256         return dscptr;
277  * @param dscptr  descriptor to be freed
279 static void __cvmx_shmem_smdr_free(struct cvmx_shmem_dscptr *dscptr)
281     dscptr->owner = CVMX_SHMEM_OWNER_NONE;
298  * @return  dscptr descriptor of the opened named block
303     struct cvmx_shmem_dscptr *dscptr = NULL;
345     dscptr = __cvmx_shmem_smdr_find_by_name(name);
346     if (dscptr)
355         if ((size != dscptr->size) ||  (size != dscptr -> alignment))
361         dscptr = __cvmx_shmem_smdr_find_free_dscptr();
362         if (dscptr)
372     if (dscptr != NULL)
373         dscptr->use_count += 1;
376     return dscptr;
383     if (dscptr)
384         __cvmx_shmem_smdr_free(dscptr);
394     cvmx_dprintf("cvmx-shmem-dbg: init SMDR descriptor %p \n", dscptr);
407     dscptr->vaddr = vaddr;
410     dscptr->owner = cvmx_get_core_num();
411     dscptr->is_named_block = 1;
412     dscptr->use_count = 1;
413     dscptr->name =shmem_nblk->name ;
414     dscptr->paddr = shmem_nblk->base_addr;
415     dscptr->size = size;
416     dscptr->alignment = size;
420         dscptr->p_wronly = 1;
422         dscptr->p_rdwr = 1;
425    return dscptr;
435  *  @param dscptr  shared memory descriptor
441 void *__cvmx_shmem_map_standalone(struct cvmx_shmem_dscptr *dscptr, int pflag)
457          free_index, dscptr->vaddr, dscptr->paddr, dscptr->size );
460     cvmx_tlb_write_runtime_entry(free_index, CAST64(dscptr->vaddr),
461             dscptr->paddr, dscptr->size,
464     return dscptr -> vaddr;
475  *  @param dscptr  shared memory descriptor
481 static inline void *__cvmx_shmem_map_linux(struct cvmx_shmem_dscptr *dscptr, int pflag)
495     vaddr = mmap(dscptr->vaddr, dscptr->size, PROT_READ|PROT_WRITE,
501     if ((vaddr!=NULL) && (vaddr != dscptr->vaddr))
503         munmap(vaddr, dscptr->size);
515  *  @param dscptr  shared memory descriptor
520 void *cvmx_shmem_map(struct cvmx_shmem_dscptr *dscptr, int pflag)
524     vaddr = __cvmx_shmem_map_linux(dscptr, pflag);
526     vaddr = __cvmx_shmem_map_standalone(dscptr, pflag);
539  *  @param dscptr  shared memory descriptor
543 static inline void __cvmx_shmem_unmap_linux(struct cvmx_shmem_dscptr* dscptr)
545     if (__cvmx_shmem_devmemfd && dscptr)
546         munmap(dscptr->vaddr, dscptr->size);
558  *  @param dscptr  shared memory descriptor
563 __cvmx_shmem_unmap_standalone(struct cvmx_shmem_dscptr *dscptr)
567     index = cvmx_tlb_lookup(CAST64(dscptr->vaddr));
580  *  @param dscptr  shared memory descriptor
583 void cvmx_shmem_unmap(struct cvmx_shmem_dscptr *dscptr)
586     __cvmx_shmem_unmap_linux(dscptr);
588     __cvmx_shmem_unmap_standalone(dscptr);
597  *  @param dscptr  shared memory descriptor
605 static inline int __cvmx_shmem_close_dscptr(struct cvmx_shmem_dscptr *dscptr, int remove)
607     cvmx_spinlock_lock(&dscptr->lock);
609     if (dscptr->use_count >0)
610         dscptr->use_count-= 1;
612     if ((dscptr->use_count == 0) && remove)
615         __cvmx_shmem_smdr_free(dscptr);
619         if (dscptr->is_named_block)
622             cvmx_dprintf("cvmx-shmem-dbg: remove named block %s \n", dscptr->name);
624             cvmx_bootmem_phy_named_block_free(dscptr->name, 0);
627     cvmx_spinlock_unlock(&dscptr->lock);
639  *  @param dscptr  shared memory descriptor
648 static inline int __cvmx_shmem_close_standalone(struct cvmx_shmem_dscptr *dscptr, int remove)
650     return __cvmx_shmem_close_dscptr(dscptr, remove);
661  *  @param dscptr  shared memory descriptor
670 int __cvmx_shmem_close_linux(struct cvmx_shmem_dscptr *dscptr, int remove)
673     ret = __cvmx_shmem_close_dscptr(dscptr, remove);
690  *  @param dscptr  shared memory descriptor
698 int cvmx_shmem_close(struct cvmx_shmem_dscptr *dscptr, int remove)
702     ret = __cvmx_shmem_close_linux(dscptr, remove);
704     ret = __cvmx_shmem_close_standalone(dscptr, remove);
714  * @param dscptr  descriptor passed in by the iterator
718 static struct cvmx_shmem_dscptr *__cvmx_shmem_smdr_display_dscptr(struct cvmx_shmem_dscptr *dscptr, void *nouse)
720     if ((dscptr != NULL ) && (dscptr -> owner != CVMX_SHMEM_OWNER_NONE))
723             dscptr->name, dscptr-> paddr,
724             dscptr->size, dscptr-> alignment,
725             dscptr->vaddr, dscptr->use_count);