diff options
Diffstat (limited to 'packages/ti/ipc/family/tci6638/VirtQueue.c')
| -rw-r--r-- | packages/ti/ipc/family/tci6638/VirtQueue.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/packages/ti/ipc/family/tci6638/VirtQueue.c b/packages/ti/ipc/family/tci6638/VirtQueue.c index 804bf48..9892a3d 100644 --- a/packages/ti/ipc/family/tci6638/VirtQueue.c +++ b/packages/ti/ipc/family/tci6638/VirtQueue.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2011-2019 Texas Instruments Incorporated - http://www.ti.com + * Copyright (c) 2011-2020 Texas Instruments Incorporated - http://www.ti.com * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -62,6 +62,7 @@ #include <ti/sysbios/knl/Swi.h> #include <ti/ipc/remoteproc/Resource.h> +#include <ti/ipc/remoteproc/rsc_types.h> #include <ti/ipc/MultiProc.h> @@ -72,6 +73,17 @@ #include <ti/ipc/rpmsg/_VirtQueue.h> #include <ti/ipc/rpmsg/virtio_ring.h> +/* + * The following three VIRTIO_* defines must match those in + * <Linux_kernel>/include/uapi/linux/virtio_config.h + */ +#define VIRTIO_CONFIG_S_ACKNOWLEDGE 1 +#define VIRTIO_CONFIG_S_DRIVER 2 +#define VIRTIO_CONFIG_S_DRIVER_OK 4 + +#define VRING_BUFS_PRIMED (VIRTIO_CONFIG_S_ACKNOWLEDGE | \ + VIRTIO_CONFIG_S_DRIVER | VIRTIO_CONFIG_S_DRIVER_OK) + /* Used for defining the size of the virtqueue registry */ #define NUM_QUEUES 2 @@ -113,6 +125,17 @@ Void VirtQueue_init() UInt16 clusterId; UInt16 procId; + if (!VirtQueue_module->virtQueueInitialized) { + Log_print1(Diags_USER1, "_VirtQueue_init: VDEV status: 0x%x\n", + Resource_getVdevStatus(VIRTIO_ID_RPMSG)); + Log_print0(Diags_USER1, "_VirtQueue_init: Polling VDEV status...\n"); + while (Resource_getVdevStatus(VIRTIO_ID_RPMSG) != VRING_BUFS_PRIMED); + Log_print1(Diags_USER1, "_VirtQueue_init: VDEV status synced: 0x%x\n", + Resource_getVdevStatus(VIRTIO_ID_RPMSG)); + + VirtQueue_module->virtQueueInitialized = 1; + } + /* VirtQueue_init() must be called before MultiProcSetup_init(). * Check the xdc_runtime_Startup_firstFxns__A array in the XDC * generated code. Abort if the procId has already been set; we |