If the mmap request is to add pages and thre are VMIDs associated with
that context, do a call to SCM to reassign that memory. Do not do this
for remote heap allocation, that is done on init create static process
only.
Co-developed-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
Signed-off-by: Abel Vesa <abel.vesa@xxxxxxxxxx>
---
drivers/misc/fastrpc.c | 19 ++++++++++++++++++-
1 file changed, 18 insertions(+), 1 deletion(-)
diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index bc1e8f003d7a..b9d9bfad93f6 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -1842,8 +1842,9 @@ static int fastrpc_req_mmap(struct fastrpc_user *fl, char __user *argp)
if (copy_from_user(&req, argp, sizeof(req)))
return -EFAULT;
- if (req.flags != ADSP_MMAP_ADD_PAGES) {
+ if (req.flags != ADSP_MMAP_ADD_PAGES && req.flags != ADSP_MMAP_REMOTE_HEAP_ADDR) {
dev_err(dev, "flag not supported 0x%x\n", req.flags);
+
return -EINVAL;
}
@@ -1889,6 +1890,22 @@ static int fastrpc_req_mmap(struct fastrpc_user *fl, char __user *argp)
/* let the client know the address to use */
req.vaddrout = rsp_msg.vaddr;
+ /* Add memory to static PD pool, protection thru hypervisor */
+ if (req.flags != ADSP_MMAP_REMOTE_HEAP_ADDR && fl->cctx->vmcount) {
+ struct qcom_scm_vmperm perm;
+ int err = 0;
+
+ perm.vmid = QCOM_SCM_VMID_HLOS;
+ perm.perm = QCOM_SCM_PERM_RWX;
+ err = qcom_scm_assign_mem(buf->phys, buf->size,
+ &(fl->cctx->vmperms[0].vmid), &perm, 1);
+ if (err) {
+ dev_err(fl->sctx->dev, "Failed to assign memory phys 0x%llx size 0x%llx err %d",
+ buf->phys, buf->size, err);
+ goto err_assign;
+ }
+ }
+
spin_lock(&fl->lock);
list_add_tail(&buf->node, &fl->mmaps);
spin_unlock(&fl->lock);
--
2.34.1
