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misc: fastrpc: Pass proper scm arguments for static process init 

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: 0871561055 ("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>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20230811115643.38578-4-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ekansh Gupta 2023-08-11 12:56:43 +01:00 committed by Greg Kroah-Hartman
parent a2cb9cd6a3
commit fe6518d547
1 changed files with 9 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/misc/fastrpc.c
View File

@ -1325,13 +1325,18 @@ 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);