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libubb/physmem.c (physmem_xlat_vec): more general version of physmem_xlat
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@ -16,9 +16,17 @@
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#include <sys/types.h>
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struct physmem_vec {
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unsigned long addr;
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size_t len;
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};
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void *physmem_malloc(size_t size);
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void *physmem_calloc(size_t size);
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unsigned long physmem_xlat(void *v);
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int physmem_xlat_vec(void *v, size_t len,
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struct physmem_vec *vec, int vec_len);
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int physmem_flush(const void *data, size_t size);
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#endif /* !UBB_PHYSMEM_H */
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@ -144,6 +144,41 @@ unsigned long physmem_xlat(void *v)
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}
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int physmem_xlat_vec(void *v, size_t len,
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struct physmem_vec *vec, int vec_len)
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{
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unsigned long vaddr = (unsigned long) v;
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unsigned long offset, this_len;
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int fd;
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int n = 0;
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fd = open(PAGEMAP_FILE, O_RDONLY);
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if (fd < 0) {
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perror(PAGEMAP_FILE);
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exit(1);
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}
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while (len) {
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if (n >= vec_len) {
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close(fd);
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errno = EOVERFLOW;
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return -1;
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}
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offset = vaddr & (PAGE_SIZE-1);
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this_len = PAGE_SIZE-offset;
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if (this_len > len)
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this_len = len;
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vec->addr = xlat_one(fd, vaddr);
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vec->len = this_len;
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vec++;
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n++;
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vaddr += this_len;
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len -= this_len;
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}
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close(fd);
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return n;
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}
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int physmem_flush(const void *v, size_t size)
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{
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if (cacheflush((void *) v, size, DCACHE))
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