Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/arm/ti/cpsw/if_cpswvar.h
39536 views
1
/*-

2
 * SPDX-License-Identifier: BSD-2-Clause

3
 *

4
 * Copyright (c) 2012 Damjan Marion <[email protected]>

5
 * All rights reserved.

6
 *

7
 * Redistribution and use in source and binary forms, with or without

8
 * modification, are permitted provided that the following conditions

9
 * are met:

10
 * 1. Redistributions of source code must retain the above copyright

11
 *    notice, this list of conditions and the following disclaimer.

12
 * 2. Redistributions in binary form must reproduce the above copyright

13
 *    notice, this list of conditions and the following disclaimer in the

14
 *    documentation and/or other materials provided with the distribution.

15
 *

16
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND

17
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

18
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

19
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

20
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

21
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

22
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

23
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

24
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

25
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

26
 * SUCH DAMAGE.

27
 */

28


29
#ifndef	_IF_CPSWVAR_H

30
#define	_IF_CPSWVAR_H

31


32
#define	CPSW_PORTS		2

33
#define	CPSW_INTR_COUNT		4

34


35
/* MII BUS  */

36
#define	CPSW_MIIBUS_RETRIES	20

37
#define	CPSW_MIIBUS_DELAY	100

38


39
#define	CPSW_MAX_ALE_ENTRIES	1024

40


41
#define	CPSW_SYSCTL_COUNT	34

42


43
#ifdef CPSW_ETHERSWITCH

44
#define	CPSW_CPU_PORT		0

45
#define	CPSW_PORTS_MASK		0x7

46
#define	CPSW_VLANS		128	/* Arbitrary number. */

47


48
struct cpsw_vlangroups {

49
	int vid;

50
};

51
#endif

52


53
struct cpsw_slot {

54
	uint32_t bd_offset;  /* Offset of corresponding BD within CPPI RAM. */

55
	bus_dmamap_t dmamap;

56
	if_t ifp;

57
	struct mbuf *mbuf;

58
	STAILQ_ENTRY(cpsw_slot) next;

59
};

60
STAILQ_HEAD(cpsw_slots, cpsw_slot);

61


62
struct cpsw_queue {

63
	struct mtx	lock;

64
	int		running;

65
	int		teardown;

66
	struct cpsw_slots active;

67
	struct cpsw_slots avail;

68
	uint32_t	queue_adds; /* total bufs added */

69
	uint32_t	queue_removes; /* total bufs removed */

70
	uint32_t	queue_removes_at_last_tick; /* Used by watchdog */

71
	uint32_t	queue_restart;

72
	int		queue_slots;

73
	int		active_queue_len;

74
	int		max_active_queue_len;

75
	int		avail_queue_len;

76
	int		max_avail_queue_len;

77
	int		longest_chain; /* Largest # segments in a single packet. */

78
	int		hdp_offset;

79
};

80


81
struct cpsw_port {

82
	device_t	dev;

83
	int		phy;

84
	int		vlan;

85
};

86


87
struct cpsw_softc {

88
	device_t	dev;

89
	int		active_slave;

90
	int		debug;

91
	int		dualemac;

92
	phandle_t	node;

93
	struct bintime	attach_uptime; /* system uptime when attach happened. */

94
	struct cpsw_port port[2];

95
	unsigned	coal_us;

96


97
	/* RX and TX buffer tracking */

98
	struct cpsw_queue rx, tx;

99


100
	/* We expect 1 memory resource and 4 interrupts from the device tree. */

101
	int		mem_rid;

102
	struct resource	*mem_res;

103
	struct resource	*irq_res[CPSW_INTR_COUNT];

104
	void		*ih_cookie[CPSW_INTR_COUNT];

105


106
	/* A buffer full of nulls for TX padding. */

107
	void		*nullpad;

108


109
	bus_dma_tag_t	mbuf_dtag;

110


111
	struct {

112
		int resets;

113
		int timer;

114
		struct callout  callout;

115
	} watchdog;

116


117
	/* 64-bit versions of 32-bit hardware statistics counters */

118
	uint64_t shadow_stats[CPSW_SYSCTL_COUNT];

119


120
	/* CPPI STATERAM has 512 slots for building TX/RX queues. */

121
	/* TODO: Size here supposedly varies with different versions

122
	   of the controller.  Check DaVinci specs and find a good

123
	   way to adjust this.  One option is to have a separate

124
	   Device Tree parameter for number slots; another option

125
	   is to calculate it from the memory size in the device tree. */

126
	struct cpsw_slot _slots[CPSW_CPPI_RAM_SIZE / sizeof(struct cpsw_cpdma_bd)];

127
	struct cpsw_slots avail;

128
};

129


130
struct cpswp_softc {

131
	device_t	dev;

132
	device_t	miibus;

133
	device_t	pdev;

134
	int		media_status;

135
	int		unit;

136
	int		vlan;

137
	struct bintime	init_uptime; /* system uptime when init happened. */

138
	struct callout	mii_callout;

139
	struct cpsw_softc *swsc;

140
	if_t		ifp;

141
	struct mii_data	*mii;

142
	struct mtx	lock;

143
	uint32_t	if_flags;

144
	uint32_t	phy;

145
	uint32_t	phyaccess;

146
	uint32_t	physel;

147
};

148


149
#endif /*_IF_CPSWVAR_H */

150


151