linux/drivers/net/ethernet/ti/davinci_cpdma.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Texas Instruments CPDMA Driver
 *
 * Copyright (C) 2010 Texas Instruments
 *
 */
#ifndef __DAVINCI_CPDMA_H__
#define __DAVINCI_CPDMA_H__

#define CPDMA_MAX_CHANNELS …

#define CPDMA_RX_SOURCE_PORT(__status__) …

#define CPDMA_RX_VLAN_ENCAP …

#define CPDMA_EOI_RX_THRESH …
#define CPDMA_EOI_RX …
#define CPDMA_EOI_TX …
#define CPDMA_EOI_MISC …

struct cpdma_params { … };

struct cpdma_chan_stats { … };

struct cpdma_ctlr;
struct cpdma_chan;

cpdma_handler_fn;

struct cpdma_ctlr *cpdma_ctlr_create(struct cpdma_params *params);
int cpdma_ctlr_destroy(struct cpdma_ctlr *ctlr);
int cpdma_ctlr_start(struct cpdma_ctlr *ctlr);
int cpdma_ctlr_stop(struct cpdma_ctlr *ctlr);

struct cpdma_chan *cpdma_chan_create(struct cpdma_ctlr *ctlr, int chan_num,
				     cpdma_handler_fn handler, int rx_type);
int cpdma_chan_get_rx_buf_num(struct cpdma_chan *chan);
int cpdma_chan_destroy(struct cpdma_chan *chan);
int cpdma_chan_start(struct cpdma_chan *chan);
int cpdma_chan_stop(struct cpdma_chan *chan);

int cpdma_chan_get_stats(struct cpdma_chan *chan,
			 struct cpdma_chan_stats *stats);
int cpdma_chan_submit_mapped(struct cpdma_chan *chan, void *token,
			     dma_addr_t data, int len, int directed);
int cpdma_chan_submit(struct cpdma_chan *chan, void *token, void *data,
		      int len, int directed);
int cpdma_chan_idle_submit_mapped(struct cpdma_chan *chan, void *token,
				  dma_addr_t data, int len, int directed);
int cpdma_chan_idle_submit(struct cpdma_chan *chan, void *token, void *data,
			   int len, int directed);
int cpdma_chan_process(struct cpdma_chan *chan, int quota);

int cpdma_ctlr_int_ctrl(struct cpdma_ctlr *ctlr, bool enable);
void cpdma_ctlr_eoi(struct cpdma_ctlr *ctlr, u32 value);
int cpdma_chan_int_ctrl(struct cpdma_chan *chan, bool enable);
u32 cpdma_ctrl_rxchs_state(struct cpdma_ctlr *ctlr);
u32 cpdma_ctrl_txchs_state(struct cpdma_ctlr *ctlr);
bool cpdma_check_free_tx_desc(struct cpdma_chan *chan);
int cpdma_chan_set_weight(struct cpdma_chan *ch, int weight);
int cpdma_chan_set_rate(struct cpdma_chan *ch, u32 rate);
u32 cpdma_chan_get_rate(struct cpdma_chan *ch);
u32 cpdma_chan_get_min_rate(struct cpdma_ctlr *ctlr);

enum cpdma_control { … };

int cpdma_control_get(struct cpdma_ctlr *ctlr, int control);
int cpdma_control_set(struct cpdma_ctlr *ctlr, int control, int value);
int cpdma_get_num_rx_descs(struct cpdma_ctlr *ctlr);
int cpdma_set_num_rx_descs(struct cpdma_ctlr *ctlr, int num_rx_desc);
int cpdma_get_num_tx_descs(struct cpdma_ctlr *ctlr);

#endif