diff mbox series

[v4] misc: fastrpc: Pass proper scm arguments for static process init

Message ID 1690984411-4448-1-git-send-email-quic_ekangupt@quicinc.com
State New
Headers
Series [v4] misc: fastrpc: Pass proper scm arguments for static process init |

Commit Message

Ekansh Gupta Aug. 2, 2023, 1:53 p.m. UTC 
  Memory is allocated for dynamic loading when audio daemon is trying
to attach to audioPD on DSP side. This memory is allocated from
reserved CMA memory region and needs ownership assignment to
new VMID in order to use it from audioPD.

In the current implementation, arguments are not correctly passed
to the scm call which might result in failure of dynamic loading
on audioPD. Added changes to pass correct arguments during daemon
attach request.

Fixes: 	0871561055e6 ("misc: fastrpc: Add support for audiopd")
Cc: stable <stable@kernel.org>
Tested-by: Ekansh Gupta <quic_ekangupt@quicinc.com>
Signed-off-by: Ekansh Gupta <quic_ekangupt@quicinc.com>
---
Changes in v2:
  - Removed redundant code
Changes in v3:
  - Reuse channel context perms for source perms
Changes in v4:
  - Add correct formatting

 drivers/misc/fastrpc.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 30d4d04..87df6a0 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -1322,13 +1322,18 @@  static int fastrpc_init_create_static_process(struct fastrpc_user *fl,
 	return 0;
 err_invoke:
 	if (fl->cctx->vmcount) {
-		struct qcom_scm_vmperm perm;
+		u64 src_perms = 0;
+		struct qcom_scm_vmperm dst_perms;
+		u32 i;
 
-		perm.vmid = QCOM_SCM_VMID_HLOS;
-		perm.perm = QCOM_SCM_PERM_RWX;
+		for (i = 0; i < fl->cctx->vmcount; i++)
+			src_perms |= BIT(fl->cctx->vmperms[i].vmid);
+
+		dst_perms.vmid = QCOM_SCM_VMID_HLOS;
+		dst_perms.perm = QCOM_SCM_PERM_RWX;
 		err = qcom_scm_assign_mem(fl->cctx->remote_heap->phys,
 						(u64)fl->cctx->remote_heap->size,
-						&fl->cctx->perms, &perm, 1);
+						&src_perms, &dst_perms, 1);
 		if (err)
 			dev_err(fl->sctx->dev, "Failed to assign memory phys 0x%llx size 0x%llx err %d",
 				fl->cctx->remote_heap->phys, fl->cctx->remote_heap->size, err);