static const char *give_pointer_location(struct nvshm_handle *handle, void *ptr)
{
if (!ptr)
return "null";
ptr = NVSHM_B2A(handle, ptr);
if (ADDR_OUTSIDE(ptr, handle->desc_base_virt, handle->desc_size)
&& ADDR_OUTSIDE(ptr, handle->data_base_virt, handle->data_size)) {
if (ADDR_OUTSIDE(ptr, handle->ipc_base_virt, handle->ipc_size))
return "Err";
else
return "BBC";
}
return "AP";
}
/* Return 0 if ok or non zero otherwise */
static int inv_iob_list(struct nvshm_handle *handle, struct nvshm_iobuf *iob)
{
struct nvshm_iobuf *phy_list, *leaf;
phy_list = iob;
while (phy_list) {
leaf = phy_list;
while (leaf) {
/* Check leaf address before any operation on it */
/* Cannot use nvshm_iobuf_check because iobuf */
/* is not invalidated so content will be wrong */
if (ADDR_OUTSIDE(leaf, handle->ipc_base_virt,
handle->ipc_size)) {
return -EIO;
}
/* Invalidate iobuf */
INV_CPU_DCACHE(leaf, sizeof(struct nvshm_iobuf));
/* Check iobuf */
if (nvshm_iobuf_check(leaf))
return -EIO;
/* Invalidate associated data */
if (leaf->length) {
INV_CPU_DCACHE(NVSHM_B2A(handle,
(int)leaf->npduData
+ leaf->dataOffset),
leaf->length);
}
if (leaf->sg_next)
leaf = NVSHM_B2A(handle, leaf->sg_next);
else
leaf = NULL;
}
if (phy_list->next)
phy_list = NVSHM_B2A(handle, phy_list->next);
else
phy_list = NULL;
}
return 0;
}
int nvshm_iobuf_check(struct nvshm_iobuf *iob)
{
struct nvshm_handle *priv = nvshm_get_handle();
struct nvshm_iobuf *bbiob;
int ret = 0;
/* Check iobuf is in IPC space */
if (ADDR_OUTSIDE(iob, priv->ipc_base_virt, priv->ipc_size)) {
pr_err("%s: iob @ check failed 0x%lx\n",
__func__,
(long)iob);
return -1;
}
bbiob = NVSHM_A2B(priv, iob);
if (ADDR_OUTSIDE(iob->npduData, NVSHM_IPC_BB_BASE, priv->ipc_size)) {
pr_err("%s 0x%lx: npduData @ check failed 0x%lx\n",
__func__,
(long)bbiob,
(long)iob->npduData);
ret = -2;
goto dump;
}
if (ADDR_OUTSIDE(iob->npduData + iob->dataOffset,
NVSHM_IPC_BB_BASE, priv->ipc_size)) {
pr_err("%s 0x%lx: npduData + offset @ check failed 0x%lx/0x%lx\n",
__func__, (long)bbiob,
(long)iob->npduData, (long)iob->dataOffset);
ret = -3;
goto dump;
}
if (iob->next) {
if (ADDR_OUTSIDE(iob->next,
NVSHM_IPC_BB_BASE, priv->ipc_size)) {
pr_err("%s 0x%lx: next @ check failed 0x%lx\n",
__func__,
(long)bbiob,
(long)iob->next);
ret = -4;
goto dump;
}
}
if (iob->sg_next) {
if (ADDR_OUTSIDE(iob->sg_next,
NVSHM_IPC_BB_BASE, priv->ipc_size)) {
pr_err("%s 0x%lx:sg_next @ check failed 0x%lx\n",
__func__, (long)bbiob, (long)iob->sg_next);
ret = -5;
goto dump;
}
}
if (iob->qnext) {
if (ADDR_OUTSIDE(iob->qnext,
NVSHM_IPC_BB_BASE, priv->ipc_size)) {
pr_err("%s 0x%lx:qnext @ check failed 0x%lx\n",
__func__, (long)bbiob, (long)iob->qnext);
ret = -6;
goto dump;
}
}
return ret;
dump:
nvshm_iobuf_dump(iob);
return ret;
}
