char *edac_device_name, unsigned nr_instances,
char *edac_block_name, unsigned nr_blocks,
unsigned offset_value, /* zero, 1, or other based offset */
- struct edac_attrib_spec *attrib_spec, unsigned nr_attribs)
+ struct edac_dev_sysfs_block_attribute *attrib_spec, unsigned nr_attrib)
{
struct edac_device_ctl_info *dev_ctl;
struct edac_device_instance *dev_inst, *inst;
struct edac_device_block *dev_blk, *blk_p, *blk;
- struct edac_attrib *dev_attrib, *attrib_p, *attrib;
+ struct edac_dev_sysfs_block_attribute *dev_attrib, *attrib_p, *attrib;
unsigned total_size;
unsigned count;
unsigned instance, block, attr;
debugf1("%s() instances=%d blocks=%d\n",
__func__, nr_instances, nr_blocks);
- /* Figure out the offsets of the various items from the start of an
- * ctl_info structure. We want the alignment of each item
+ /* Calculate the size of memory we need to allocate AND
+ * determine the offsets of the various item arrays
+ * (instance,block,attrib) from the start of an allocated structure.
+ * We want the alignment of each item (instance,block,attrib)
* to be at least as stringent as what the compiler would
* provide if we could simply hardcode everything into a single struct.
*/
dev_ctl = (struct edac_device_ctl_info *)NULL;
- /* Calc the 'end' offset past the ctl_info structure */
+ /* Calc the 'end' offset past end of ONE ctl_info structure
+ * which will become the start of the 'instance' array
+ */
dev_inst = edac_align_ptr(&dev_ctl[1], sizeof(*dev_inst));
- /* Calc the 'end' offset past the instance array */
+ /* Calc the 'end' offset past the instance array within the ctl_info
+ * which will become the start of the block array
+ */
dev_blk = edac_align_ptr(&dev_inst[nr_instances], sizeof(*dev_blk));
- /* Calc the 'end' offset past the dev_blk array */
+ /* Calc the 'end' offset past the dev_blk array
+ * which will become the start of the attrib array, if any.
+ */
count = nr_instances * nr_blocks;
dev_attrib = edac_align_ptr(&dev_blk[count], sizeof(*dev_attrib));
- /* Check for case of NO attributes specified */
- if (nr_attribs > 0)
- count *= nr_attribs;
+ /* Check for case of when an attribute array is specified */
+ if (nr_attrib > 0) {
+ /* calc how many nr_attrib we need */
+ count *= nr_attrib;
- /* Calc the 'end' offset past the attributes array */
- pvt = edac_align_ptr(&dev_attrib[count], sz_private);
+ /* Calc the 'end' offset past the attributes array */
+ pvt = edac_align_ptr(&dev_attrib[count], sz_private);
+ } else {
+ /* no attribute array specificed */
+ pvt = edac_align_ptr(dev_attrib, sz_private);
+ }
+
+ /* 'pvt' now points to where the private data area is.
+ * At this point 'pvt' (like dev_inst,dev_blk and dev_attrib)
+ * is baselined at ZERO
+ */
total_size = ((unsigned long)pvt) + sz_private;
/* Allocate the amount of memory for the set of control structures */
if (dev_ctl == NULL)
return NULL;
- /* Adjust pointers so they point within the memory we just allocated
- * rather than an imaginary chunk of memory located at address 0.
+ /* Adjust pointers so they point within the actual memory we
+ * just allocated rather than an imaginary chunk of memory
+ * located at address 0.
+ * 'dev_ctl' points to REAL memory, while the others are
+ * ZERO based and thus need to be adjusted to point within
+ * the allocated memory.
*/
dev_inst = (struct edac_device_instance *)
(((char *)dev_ctl) + ((unsigned long)dev_inst));
dev_blk = (struct edac_device_block *)
(((char *)dev_ctl) + ((unsigned long)dev_blk));
- dev_attrib = (struct edac_attrib *)
+ dev_attrib = (struct edac_dev_sysfs_block_attribute *)
(((char *)dev_ctl) + ((unsigned long)dev_attrib));
pvt = sz_private ? (((char *)dev_ctl) + ((unsigned long)pvt)) : NULL;
+ /* Begin storing the information into the control info structure */
dev_ctl->nr_instances = nr_instances;
dev_ctl->instances = dev_inst;
dev_ctl->pvt_info = pvt;
for (block = 0; block < nr_blocks; block++) {
blk = &blk_p[block];
blk->instance = inst;
- blk->nr_attribs = nr_attribs;
- attrib_p = &dev_attrib[block * nr_attribs];
- blk->attribs = attrib_p;
snprintf(blk->name, sizeof(blk->name),
"%s%d", edac_block_name, block+offset_value);
debugf1("%s() instance=%d block=%d name=%s\n",
__func__, instance, block, blk->name);
- if (attrib_spec != NULL) {
- /* when there is an attrib_spec passed int then
- * Initialize every attrib of each block
- */
- for (attr = 0; attr < nr_attribs; attr++) {
- attrib = &attrib_p[attr];
- attrib->block = blk;
-
- /* Link each attribute to the caller's
- * spec entry, for name and type
- */
- attrib->spec = &attrib_spec[attr];
- }
+ /* if there are NO attributes OR no attribute pointer
+ * then continue on to next block iteration
+ */
+ if ((nr_attrib == 0) || (attrib_spec == NULL))
+ continue;
+
+ /* setup the attribute array for this block */
+ blk->nr_attribs = nr_attrib;
+ attrib_p = &dev_attrib[block*nr_instances*nr_attrib];
+ blk->block_attributes = attrib_p;
+
+ /* Initialize every user specified attribute in this
+ * block with the data the caller passed in
+ */
+ for (attr = 0; attr < nr_attrib; attr++) {
+ attrib = &attrib_p[attr];
+ attrib->attr = attrib_spec->attr;
+ attrib->show = attrib_spec->show;
+ attrib->store = attrib_spec->store;
+
+ /* up reference this block */
+ attrib->block = blk;
+
+ /* bump the attrib_spec */
+ attrib_spec++;
}
}
}
git.openpandora.org / pandora-kernel.git / blobdiff