[people/ms/u-boot.git] / drivers / net / ep93xx_eth.h

/*
 * Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.net>
 *
 * Copyright (C) 2004, 2005
 * Cory T. Tusar, Videon Central, Inc., <ctusar@videon-central.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#ifndef _EP93XX_ETH_H
#define _EP93XX_ETH_H

#include <net.h>

/**
 * #define this to dump device status and queue info during initialization and
 * following errors.
 */
#undef EP93XX_MAC_DEBUG

/**
 * Number of descriptor and status entries in our RX queues.
 * It must be power of 2 !
 */
#define NUMRXDESC		PKTBUFSRX

/**
 * Number of descriptor and status entries in our TX queues.
 */
#define NUMTXDESC		1

/**
 * 944 = (1024 - 64) - 16, Fifo size - Minframesize - 16 (Chip FACT)
 */
#define TXSTARTMAX		944

/**
 * Receive descriptor queue entry
 */
struct rx_descriptor {
	uint32_t word1;
	uint32_t word2;
};

/**
 * Receive status queue entry
 */
struct rx_status {
	uint32_t word1;
	uint32_t word2;
};

#define RX_STATUS_RWE(rx_status) ((rx_status->word1 >> 30) & 0x01)
#define RX_STATUS_RFP(rx_status) ((rx_status->word1 >> 31) & 0x01)
#define RX_STATUS_FRAME_LEN(rx_status) (rx_status->word2 & 0xFFFF)

/**
 * Transmit descriptor queue entry
 */
struct tx_descriptor {
	uint32_t word1;
	uint32_t word2;
};

#define TX_DESC_EOF (1 << 31)

/**
 * Transmit status queue entry
 */
struct tx_status {
	uint32_t word1;
};

#define TX_STATUS_TXWE(tx_status) (((tx_status)->word1 >> 30) & 0x01)
#define TX_STATUS_TXFP(tx_status) (((tx_status)->word1 >> 31) & 0x01)

/**
 * Transmit descriptor queue
 */
struct tx_descriptor_queue {
	struct tx_descriptor *base;
	struct tx_descriptor *current;
	struct tx_descriptor *end;
};

/**
 * Transmit status queue
 */
struct tx_status_queue {
	struct tx_status *base;
	volatile struct tx_status *current;
	struct tx_status *end;
};

/**
 * Receive descriptor queue
 */
struct rx_descriptor_queue {
	struct rx_descriptor *base;
	struct rx_descriptor *current;
	struct rx_descriptor *end;
};

/**
 * Receive status queue
 */
struct rx_status_queue {
	struct rx_status *base;
	volatile struct rx_status *current;
	struct rx_status *end;
};

/**
 * EP93xx MAC private data structure
 */
struct ep93xx_priv {
	struct rx_descriptor_queue	rx_dq;
	struct rx_status_queue		rx_sq;
	void				*rx_buffer[NUMRXDESC];

	struct tx_descriptor_queue	tx_dq;
	struct tx_status_queue		tx_sq;

	struct mac_regs			*regs;
};

#endif
Commit	Line	Data
594d57d0 MK	1	/*
	2	* Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.net>
	3	*
	4	* Copyright (C) 2004, 2005
	5	* Cory T. Tusar, Videon Central, Inc., <ctusar@videon-central.com>
	6	*
1a459660	7	* SPDX-License-Identifier: GPL-2.0+
594d57d0 MK	8	*/
	9
	10	#ifndef _EP93XX_ETH_H
	11	#define _EP93XX_ETH_H
	12
	13	#include <net.h>
	14
	15	/**
	16	* #define this to dump device status and queue info during initialization and
	17	* following errors.
	18	*/
	19	#undef EP93XX_MAC_DEBUG
	20
	21	/**
	22	* Number of descriptor and status entries in our RX queues.
	23	* It must be power of 2 !
	24	*/
	25	#define NUMRXDESC PKTBUFSRX
	26
	27	/**
	28	* Number of descriptor and status entries in our TX queues.
	29	*/
	30	#define NUMTXDESC 1
	31
	32	/**
	33	* 944 = (1024 - 64) - 16, Fifo size - Minframesize - 16 (Chip FACT)
	34	*/
	35	#define TXSTARTMAX 944
	36
	37	/**
	38	* Receive descriptor queue entry
	39	*/
	40	struct rx_descriptor {
	41	uint32_t word1;
	42	uint32_t word2;
	43	};
	44
	45	/**
	46	* Receive status queue entry
	47	*/
	48	struct rx_status {
	49	uint32_t word1;
	50	uint32_t word2;
	51	};
	52
	53	#define RX_STATUS_RWE(rx_status) ((rx_status->word1 >> 30) & 0x01)
	54	#define RX_STATUS_RFP(rx_status) ((rx_status->word1 >> 31) & 0x01)
	55	#define RX_STATUS_FRAME_LEN(rx_status) (rx_status->word2 & 0xFFFF)
	56
	57	/**
	58	* Transmit descriptor queue entry
	59	*/
	60	struct tx_descriptor {
	61	uint32_t word1;
	62	uint32_t word2;
	63	};
	64
	65	#define TX_DESC_EOF (1 << 31)
	66
	67	/**
	68	* Transmit status queue entry
	69	*/
	70	struct tx_status {
	71	uint32_t word1;
72	};
73
74	#define TX_STATUS_TXWE(tx_status) (((tx_status)->word1 >> 30) & 0x01)
75	#define TX_STATUS_TXFP(tx_status) (((tx_status)->word1 >> 31) & 0x01)
76
77	/**
78	* Transmit descriptor queue
79	*/
80	struct tx_descriptor_queue {
81	struct tx_descriptor *base;
82	struct tx_descriptor *current;
83	struct tx_descriptor *end;
84	};
85
86	/**
87	* Transmit status queue
88	*/
89	struct tx_status_queue {
90	struct tx_status *base;
91	volatile struct tx_status *current;
92	struct tx_status *end;
93	};
94
95	/**
96	* Receive descriptor queue
97	*/
98	struct rx_descriptor_queue {
99	struct rx_descriptor *base;
100	struct rx_descriptor *current;
101	struct rx_descriptor *end;
102	};
103
104	/**
105	* Receive status queue
106	*/
107	struct rx_status_queue {
108	struct rx_status *base;
109	volatile struct rx_status *current;
110	struct rx_status *end;
111	};
112
113	/**
114	* EP93xx MAC private data structure
115	*/
116	struct ep93xx_priv {
117	struct rx_descriptor_queue rx_dq;
118	struct rx_status_queue rx_sq;
119	void *rx_buffer[NUMRXDESC];
120
121	struct tx_descriptor_queue tx_dq;
122	struct tx_status_queue tx_sq;
123
124	struct mac_regs *regs;
125	};
126
127	#endif