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Diffstat (limited to 'include/linux/dma/k3-psil.h')
-rw-r--r-- | include/linux/dma/k3-psil.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/include/linux/dma/k3-psil.h b/include/linux/dma/k3-psil.h new file mode 100644 index 000000000..5f106d852 --- /dev/null +++ b/include/linux/dma/k3-psil.h @@ -0,0 +1,86 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2019 Texas Instruments Incorporated - https://www.ti.com + */ + +#ifndef K3_PSIL_H_ +#define K3_PSIL_H_ + +#include <linux/types.h> + +#define K3_PSIL_DST_THREAD_ID_OFFSET 0x8000 + +struct device; + +/** + * enum udma_tp_level - Channel Throughput Levels + * @UDMA_TP_NORMAL: Normal channel + * @UDMA_TP_HIGH: High Throughput channel + * @UDMA_TP_ULTRAHIGH: Ultra High Throughput channel + */ +enum udma_tp_level { + UDMA_TP_NORMAL = 0, + UDMA_TP_HIGH, + UDMA_TP_ULTRAHIGH, + UDMA_TP_LAST, +}; + +/** + * enum psil_endpoint_type - PSI-L Endpoint type + * @PSIL_EP_NATIVE: Normal channel + * @PSIL_EP_PDMA_XY: XY mode PDMA + * @PSIL_EP_PDMA_MCAN: MCAN mode PDMA + * @PSIL_EP_PDMA_AASRC: AASRC mode PDMA + */ +enum psil_endpoint_type { + PSIL_EP_NATIVE = 0, + PSIL_EP_PDMA_XY, + PSIL_EP_PDMA_MCAN, + PSIL_EP_PDMA_AASRC, +}; + +/** + * struct psil_endpoint_config - PSI-L Endpoint configuration + * @ep_type: PSI-L endpoint type + * @channel_tpl: Desired throughput level for the channel + * @pkt_mode: If set, the channel must be in Packet mode, otherwise in + * TR mode + * @notdpkt: TDCM must be suppressed on the TX channel + * @needs_epib: Endpoint needs EPIB + * @pdma_acc32: ACC32 must be enabled on the PDMA side + * @pdma_burst: BURST must be enabled on the PDMA side + * @psd_size: If set, PSdata is used by the endpoint + * @mapped_channel_id: PKTDMA thread to channel mapping for mapped channels. + * The thread must be serviced by the specified channel if + * mapped_channel_id is >= 0 in case of PKTDMA + * @flow_start: PKDMA flow range start of mapped channel. Unmapped + * channels use flow_id == chan_id + * @flow_num: PKDMA flow count of mapped channel. Unmapped channels + * use flow_id == chan_id + * @default_flow_id: PKDMA default (r)flow index of mapped channel. + * Must be within the flow range of the mapped channel. + */ +struct psil_endpoint_config { + enum psil_endpoint_type ep_type; + enum udma_tp_level channel_tpl; + + unsigned pkt_mode:1; + unsigned notdpkt:1; + unsigned needs_epib:1; + /* PDMA properties, valid for PSIL_EP_PDMA_* */ + unsigned pdma_acc32:1; + unsigned pdma_burst:1; + + u32 psd_size; + /* PKDMA mapped channel */ + s16 mapped_channel_id; + /* PKTDMA tflow and rflow ranges for mapped channel */ + u16 flow_start; + u16 flow_num; + s16 default_flow_id; +}; + +int psil_set_new_ep_config(struct device *dev, const char *name, + struct psil_endpoint_config *ep_config); + +#endif /* K3_PSIL_H_ */ |