linux/dma/k3-psil.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /*
0003  *  Copyright (C) 2019 Texas Instruments Incorporated - https://www.ti.com
0004  */
0005
0006 #ifndef K3_PSIL_H_
0007 #define K3_PSIL_H_
0008
0009 #include <linux/types.h>
0010
0011 #define K3_PSIL_DST_THREAD_ID_OFFSET 0x8000
0012
0013 struct device;
0014
0015 /**
0016  * enum udma_tp_level - Channel Throughput Levels
0017  * @UDMA_TP_NORMAL: Normal channel
0018  * @UDMA_TP_HIGH:   High Throughput channel
0019  * @UDMA_TP_ULTRAHIGH:  Ultra High Throughput channel
0020  */
0021 enum udma_tp_level {
0022     UDMA_TP_NORMAL = 0,
0023     UDMA_TP_HIGH,
0024     UDMA_TP_ULTRAHIGH,
0025     UDMA_TP_LAST,
0026 };
0027
0028 /**
0029  * enum psil_endpoint_type - PSI-L Endpoint type
0030  * @PSIL_EP_NATIVE: Normal channel
0031  * @PSIL_EP_PDMA_XY:    XY mode PDMA
0032  * @PSIL_EP_PDMA_MCAN:  MCAN mode PDMA
0033  * @PSIL_EP_PDMA_AASRC: AASRC mode PDMA
0034  */
0035 enum psil_endpoint_type {
0036     PSIL_EP_NATIVE = 0,
0037     PSIL_EP_PDMA_XY,
0038     PSIL_EP_PDMA_MCAN,
0039     PSIL_EP_PDMA_AASRC,
0040 };
0041
0042 /**
0043  * struct psil_endpoint_config - PSI-L Endpoint configuration
0044  * @ep_type:        PSI-L endpoint type
0045  * @channel_tpl:    Desired throughput level for the channel
0046  * @pkt_mode:       If set, the channel must be in Packet mode, otherwise in
0047  *          TR mode
0048  * @notdpkt:        TDCM must be suppressed on the TX channel
0049  * @needs_epib:     Endpoint needs EPIB
0050  * @pdma_acc32:     ACC32 must be enabled on the PDMA side
0051  * @pdma_burst:     BURST must be enabled on the PDMA side
0052  * @psd_size:       If set, PSdata is used by the endpoint
0053  * @mapped_channel_id:  PKTDMA thread to channel mapping for mapped channels.
0054  *          The thread must be serviced by the specified channel if
0055  *          mapped_channel_id is >= 0 in case of PKTDMA
0056  * @flow_start:     PKDMA flow range start of mapped channel. Unmapped
0057  *          channels use flow_id == chan_id
0058  * @flow_num:       PKDMA flow count of mapped channel. Unmapped channels
0059  *          use flow_id == chan_id
0060  * @default_flow_id:    PKDMA default (r)flow index of mapped channel.
0061  *          Must be within the flow range of the mapped channel.
0062  */
0063 struct psil_endpoint_config {
0064     enum psil_endpoint_type ep_type;
0065     enum udma_tp_level channel_tpl;
0066
0067     unsigned pkt_mode:1;
0068     unsigned notdpkt:1;
0069     unsigned needs_epib:1;
0070     /* PDMA properties, valid for PSIL_EP_PDMA_* */
0071     unsigned pdma_acc32:1;
0072     unsigned pdma_burst:1;
0073
0074     u32 psd_size;
0075     /* PKDMA mapped channel */
0076     s16 mapped_channel_id;
0077     /* PKTDMA tflow and rflow ranges for mapped channel */
0078     u16 flow_start;
0079     u16 flow_num;
0080     s16 default_flow_id;
0081 };
0082
0083 int psil_set_new_ep_config(struct device *dev, const char *name,
0084                struct psil_endpoint_config *ep_config);
0085
0086 #endif /* K3_PSIL_H_ */