[linux-2.6-block.git] / drivers / net / sfc / gmii.h

/****************************************************************************
 * Driver for Solarflare Solarstorm network controllers and boards
 * Copyright 2005-2006 Fen Systems Ltd.
 * Copyright 2006 Solarflare Communications Inc.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation, incorporated herein by reference.
 */

#ifndef EFX_GMII_H
#define EFX_GMII_H

/*
 * GMII interface
 */

#include <linux/mii.h>

/* GMII registers, excluding registers already defined as MII
 * registers in mii.h
 */
#define GMII_IER		0x12	/* Interrupt enable register */
#define GMII_ISR		0x13	/* Interrupt status register */

/* Interrupt enable register */
#define IER_ANEG_ERR		0x8000	/* Bit 15 - autonegotiation error */
#define IER_SPEED_CHG		0x4000	/* Bit 14 - speed changed */
#define IER_DUPLEX_CHG		0x2000	/* Bit 13 - duplex changed */
#define IER_PAGE_RCVD		0x1000	/* Bit 12 - page received */
#define IER_ANEG_DONE		0x0800	/* Bit 11 - autonegotiation complete */
#define IER_LINK_CHG		0x0400	/* Bit 10 - link status changed */
#define IER_SYM_ERR		0x0200	/* Bit 9 - symbol error */
#define IER_FALSE_CARRIER	0x0100	/* Bit 8 - false carrier */
#define IER_FIFO_ERR		0x0080	/* Bit 7 - FIFO over/underflow */
#define IER_MDIX_CHG		0x0040	/* Bit 6 - MDI crossover changed */
#define IER_DOWNSHIFT		0x0020	/* Bit 5 - downshift */
#define IER_ENERGY		0x0010	/* Bit 4 - energy detect */
#define IER_DTE_POWER		0x0004	/* Bit 2 - DTE power detect */
#define IER_POLARITY_CHG	0x0002	/* Bit 1 - polarity changed */
#define IER_JABBER		0x0001	/* Bit 0 - jabber */

/* Interrupt status register */
#define ISR_ANEG_ERR		0x8000	/* Bit 15 - autonegotiation error */
#define ISR_SPEED_CHG		0x4000	/* Bit 14 - speed changed */
#define ISR_DUPLEX_CHG		0x2000	/* Bit 13 - duplex changed */
#define ISR_PAGE_RCVD		0x1000	/* Bit 12 - page received */
#define ISR_ANEG_DONE		0x0800	/* Bit 11 - autonegotiation complete */
#define ISR_LINK_CHG		0x0400	/* Bit 10 - link status changed */
#define ISR_SYM_ERR		0x0200	/* Bit 9 - symbol error */
#define ISR_FALSE_CARRIER	0x0100	/* Bit 8 - false carrier */
#define ISR_FIFO_ERR		0x0080	/* Bit 7 - FIFO over/underflow */
#define ISR_MDIX_CHG		0x0040	/* Bit 6 - MDI crossover changed */
#define ISR_DOWNSHIFT		0x0020	/* Bit 5 - downshift */
#define ISR_ENERGY		0x0010	/* Bit 4 - energy detect */
#define ISR_DTE_POWER		0x0004	/* Bit 2 - DTE power detect */
#define ISR_POLARITY_CHG	0x0002	/* Bit 1 - polarity changed */
#define ISR_JABBER		0x0001	/* Bit 0 - jabber */

/* Logically extended advertisement register */
#define GM_ADVERTISE_SLCT		ADVERTISE_SLCT
#define GM_ADVERTISE_CSMA		ADVERTISE_CSMA
#define GM_ADVERTISE_10HALF		ADVERTISE_10HALF
#define GM_ADVERTISE_1000XFULL		ADVERTISE_1000XFULL
#define GM_ADVERTISE_10FULL		ADVERTISE_10FULL
#define GM_ADVERTISE_1000XHALF		ADVERTISE_1000XHALF
#define GM_ADVERTISE_100HALF		ADVERTISE_100HALF
#define GM_ADVERTISE_1000XPAUSE		ADVERTISE_1000XPAUSE
#define GM_ADVERTISE_100FULL		ADVERTISE_100FULL
#define GM_ADVERTISE_1000XPSE_ASYM	ADVERTISE_1000XPSE_ASYM
#define GM_ADVERTISE_100BASE4		ADVERTISE_100BASE4
#define GM_ADVERTISE_PAUSE_CAP		ADVERTISE_PAUSE_CAP
#define GM_ADVERTISE_PAUSE_ASYM		ADVERTISE_PAUSE_ASYM
#define GM_ADVERTISE_RESV		ADVERTISE_RESV
#define GM_ADVERTISE_RFAULT		ADVERTISE_RFAULT
#define GM_ADVERTISE_LPACK		ADVERTISE_LPACK
#define GM_ADVERTISE_NPAGE		ADVERTISE_NPAGE
#define GM_ADVERTISE_1000FULL		(ADVERTISE_1000FULL << 8)
#define GM_ADVERTISE_1000HALF		(ADVERTISE_1000HALF << 8)
#define GM_ADVERTISE_1000		(GM_ADVERTISE_1000FULL | \
					 GM_ADVERTISE_1000HALF)
#define GM_ADVERTISE_FULL		(GM_ADVERTISE_1000FULL | \
					 ADVERTISE_FULL)
#define GM_ADVERTISE_ALL		(GM_ADVERTISE_1000FULL | \
					 GM_ADVERTISE_1000HALF | \
					 ADVERTISE_ALL)

/* Logically extended link partner ability register */
#define GM_LPA_SLCT			LPA_SLCT
#define GM_LPA_10HALF			LPA_10HALF
#define GM_LPA_1000XFULL		LPA_1000XFULL
#define GM_LPA_10FULL			LPA_10FULL
#define GM_LPA_1000XHALF		LPA_1000XHALF
#define GM_LPA_100HALF			LPA_100HALF
#define GM_LPA_1000XPAUSE		LPA_1000XPAUSE
#define GM_LPA_100FULL			LPA_100FULL
#define GM_LPA_1000XPAUSE_ASYM		LPA_1000XPAUSE_ASYM
#define GM_LPA_100BASE4			LPA_100BASE4
#define GM_LPA_PAUSE_CAP		LPA_PAUSE_CAP
#define GM_LPA_PAUSE_ASYM		LPA_PAUSE_ASYM
#define GM_LPA_RESV			LPA_RESV
#define GM_LPA_RFAULT			LPA_RFAULT
#define GM_LPA_LPACK			LPA_LPACK
#define GM_LPA_NPAGE			LPA_NPAGE
#define GM_LPA_1000FULL			(LPA_1000FULL << 6)
#define GM_LPA_1000HALF			(LPA_1000HALF << 6)
#define GM_LPA_10000FULL		0x00040000
#define GM_LPA_10000HALF		0x00080000
#define GM_LPA_DUPLEX			(GM_LPA_1000FULL | GM_LPA_10000FULL \
					 | LPA_DUPLEX)
#define GM_LPA_10			(LPA_10FULL | LPA_10HALF)
#define GM_LPA_100			LPA_100
#define GM_LPA_1000			(GM_LPA_1000FULL | GM_LPA_1000HALF)
#define GM_LPA_10000			(GM_LPA_10000FULL | GM_LPA_10000HALF)

/* Retrieve GMII autonegotiation advertised abilities
 *
 * The MII advertisment register (MII_ADVERTISE) is logically extended
 * to include advertisement bits ADVERTISE_1000FULL and
 * ADVERTISE_1000HALF from MII_CTRL1000.  The result can be tested
 * against the GM_ADVERTISE_xxx constants.
 */
static inline unsigned int gmii_advertised(struct mii_if_info *gmii)
{
	unsigned int advertise;
	unsigned int ctrl1000;

	advertise = gmii->mdio_read(gmii->dev, gmii->phy_id, MII_ADVERTISE);
	ctrl1000 = gmii->mdio_read(gmii->dev, gmii->phy_id, MII_CTRL1000);
	return (((ctrl1000 << 8) & GM_ADVERTISE_1000) | advertise);
}

/* Retrieve GMII autonegotiation link partner abilities
 *
 * The MII link partner ability register (MII_LPA) is logically
 * extended by adding bits LPA_1000HALF and LPA_1000FULL from
 * MII_STAT1000.  The result can be tested against the GM_LPA_xxx
 * constants.
 */
static inline unsigned int gmii_lpa(struct mii_if_info *gmii)
{
	unsigned int lpa;
	unsigned int stat1000;

	lpa = gmii->mdio_read(gmii->dev, gmii->phy_id, MII_LPA);
	stat1000 = gmii->mdio_read(gmii->dev, gmii->phy_id, MII_STAT1000);
	return (((stat1000 << 6) & GM_LPA_1000) | lpa);
}

/* Calculate GMII autonegotiated link technology
 *
 * "negotiated" should be the result of gmii_advertised() logically
 * ANDed with the result of gmii_lpa().
 *
 * "tech" will be negotiated with the unused bits masked out.  For
 * example, if both ends of the link are capable of both
 * GM_LPA_1000FULL and GM_LPA_100FULL, GM_LPA_100FULL will be masked
 * out.
 */
static inline unsigned int gmii_nway_result(unsigned int negotiated)
{
	unsigned int other_bits;

	/* Mask out the speed and duplexity bits */
	other_bits = negotiated & ~(GM_LPA_10 | GM_LPA_100 | GM_LPA_1000);

	if (negotiated & GM_LPA_1000FULL)
		return (other_bits | GM_LPA_1000FULL);
	else if (negotiated & GM_LPA_1000HALF)
		return (other_bits | GM_LPA_1000HALF);
	else
		return (other_bits | mii_nway_result(negotiated));
}

/* Calculate GMII non-autonegotiated link technology
 *
 * This provides an equivalent to gmii_nway_result for the case when
 * autonegotiation is disabled.
 */
static inline unsigned int gmii_forced_result(unsigned int bmcr)
{
	unsigned int result;
	int full_duplex;

	full_duplex = bmcr & BMCR_FULLDPLX;
	if (bmcr & BMCR_SPEED1000)
		result = full_duplex ? GM_LPA_1000FULL : GM_LPA_1000HALF;
	else if (bmcr & BMCR_SPEED100)
		result = full_duplex ? GM_LPA_100FULL : GM_LPA_100HALF;
	else
		result = full_duplex ? GM_LPA_10FULL : GM_LPA_10HALF;
	return result;
}

#endif /* EFX_GMII_H */
Commit	Line	Data
8ceee660 BH	1	/****************************************************************************
	2	* Driver for Solarflare Solarstorm network controllers and boards
	3	* Copyright 2005-2006 Fen Systems Ltd.
	4	* Copyright 2006 Solarflare Communications Inc.
	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License version 2 as published
	8	* by the Free Software Foundation, incorporated herein by reference.
	9	*/
	10
	11	#ifndef EFX_GMII_H
	12	#define EFX_GMII_H
	13
	14	/*
	15	* GMII interface
	16	*/
	17
	18	#include <linux/mii.h>
	19
	20	/* GMII registers, excluding registers already defined as MII
	21	* registers in mii.h
	22	*/
	23	#define GMII_IER 0x12 /* Interrupt enable register */
	24	#define GMII_ISR 0x13 /* Interrupt status register */
	25
	26	/* Interrupt enable register */
	27	#define IER_ANEG_ERR 0x8000 /* Bit 15 - autonegotiation error */
	28	#define IER_SPEED_CHG 0x4000 /* Bit 14 - speed changed */
	29	#define IER_DUPLEX_CHG 0x2000 /* Bit 13 - duplex changed */
	30	#define IER_PAGE_RCVD 0x1000 /* Bit 12 - page received */
	31	#define IER_ANEG_DONE 0x0800 /* Bit 11 - autonegotiation complete */
	32	#define IER_LINK_CHG 0x0400 /* Bit 10 - link status changed */
	33	#define IER_SYM_ERR 0x0200 /* Bit 9 - symbol error */
	34	#define IER_FALSE_CARRIER 0x0100 /* Bit 8 - false carrier */
	35	#define IER_FIFO_ERR 0x0080 /* Bit 7 - FIFO over/underflow */
	36	#define IER_MDIX_CHG 0x0040 /* Bit 6 - MDI crossover changed */
	37	#define IER_DOWNSHIFT 0x0020 /* Bit 5 - downshift */
	38	#define IER_ENERGY 0x0010 /* Bit 4 - energy detect */
	39	#define IER_DTE_POWER 0x0004 /* Bit 2 - DTE power detect */
	40	#define IER_POLARITY_CHG 0x0002 /* Bit 1 - polarity changed */
	41	#define IER_JABBER 0x0001 /* Bit 0 - jabber */
	42
	43	/* Interrupt status register */
	44	#define ISR_ANEG_ERR 0x8000 /* Bit 15 - autonegotiation error */
	45	#define ISR_SPEED_CHG 0x4000 /* Bit 14 - speed changed */
	46	#define ISR_DUPLEX_CHG 0x2000 /* Bit 13 - duplex changed */
	47	#define ISR_PAGE_RCVD 0x1000 /* Bit 12 - page received */
	48	#define ISR_ANEG_DONE 0x0800 /* Bit 11 - autonegotiation complete */
	49	#define ISR_LINK_CHG 0x0400 /* Bit 10 - link status changed */
	50	#define ISR_SYM_ERR 0x0200 /* Bit 9 - symbol error */
	51	#define ISR_FALSE_CARRIER 0x0100 /* Bit 8 - false carrier */
	52	#define ISR_FIFO_ERR 0x0080 /* Bit 7 - FIFO over/underflow */
	53	#define ISR_MDIX_CHG 0x0040 /* Bit 6 - MDI crossover changed */
	54	#define ISR_DOWNSHIFT 0x0020 /* Bit 5 - downshift */
	55	#define ISR_ENERGY 0x0010 /* Bit 4 - energy detect */
	56	#define ISR_DTE_POWER 0x0004 /* Bit 2 - DTE power detect */
	57	#define ISR_POLARITY_CHG 0x0002 /* Bit 1 - polarity changed */
	58	#define ISR_JABBER 0x0001 /* Bit 0 - jabber */
	59
	60	/* Logically extended advertisement register */
	61	#define GM_ADVERTISE_SLCT ADVERTISE_SLCT
	62	#define GM_ADVERTISE_CSMA ADVERTISE_CSMA
	63	#define GM_ADVERTISE_10HALF ADVERTISE_10HALF
	64	#define GM_ADVERTISE_1000XFULL ADVERTISE_1000XFULL
65	#define GM_ADVERTISE_10FULL ADVERTISE_10FULL
66	#define GM_ADVERTISE_1000XHALF ADVERTISE_1000XHALF
67	#define GM_ADVERTISE_100HALF ADVERTISE_100HALF
68	#define GM_ADVERTISE_1000XPAUSE ADVERTISE_1000XPAUSE
69	#define GM_ADVERTISE_100FULL ADVERTISE_100FULL
70	#define GM_ADVERTISE_1000XPSE_ASYM ADVERTISE_1000XPSE_ASYM
71	#define GM_ADVERTISE_100BASE4 ADVERTISE_100BASE4
72	#define GM_ADVERTISE_PAUSE_CAP ADVERTISE_PAUSE_CAP
73	#define GM_ADVERTISE_PAUSE_ASYM ADVERTISE_PAUSE_ASYM
74	#define GM_ADVERTISE_RESV ADVERTISE_RESV
75	#define GM_ADVERTISE_RFAULT ADVERTISE_RFAULT
76	#define GM_ADVERTISE_LPACK ADVERTISE_LPACK
77	#define GM_ADVERTISE_NPAGE ADVERTISE_NPAGE
78	#define GM_ADVERTISE_1000FULL (ADVERTISE_1000FULL << 8)
79	#define GM_ADVERTISE_1000HALF (ADVERTISE_1000HALF << 8)
80	#define GM_ADVERTISE_1000 (GM_ADVERTISE_1000FULL \| \
81	GM_ADVERTISE_1000HALF)
82	#define GM_ADVERTISE_FULL (GM_ADVERTISE_1000FULL \| \
83	ADVERTISE_FULL)
84	#define GM_ADVERTISE_ALL (GM_ADVERTISE_1000FULL \| \
85	GM_ADVERTISE_1000HALF \| \
86	ADVERTISE_ALL)
87
88	/* Logically extended link partner ability register */
89	#define GM_LPA_SLCT LPA_SLCT
90	#define GM_LPA_10HALF LPA_10HALF
91	#define GM_LPA_1000XFULL LPA_1000XFULL
92	#define GM_LPA_10FULL LPA_10FULL
93	#define GM_LPA_1000XHALF LPA_1000XHALF
94	#define GM_LPA_100HALF LPA_100HALF
95	#define GM_LPA_1000XPAUSE LPA_1000XPAUSE
96	#define GM_LPA_100FULL LPA_100FULL
97	#define GM_LPA_1000XPAUSE_ASYM LPA_1000XPAUSE_ASYM
98	#define GM_LPA_100BASE4 LPA_100BASE4
99	#define GM_LPA_PAUSE_CAP LPA_PAUSE_CAP
100	#define GM_LPA_PAUSE_ASYM LPA_PAUSE_ASYM
101	#define GM_LPA_RESV LPA_RESV
102	#define GM_LPA_RFAULT LPA_RFAULT
103	#define GM_LPA_LPACK LPA_LPACK
104	#define GM_LPA_NPAGE LPA_NPAGE
105	#define GM_LPA_1000FULL (LPA_1000FULL << 6)
106	#define GM_LPA_1000HALF (LPA_1000HALF << 6)
107	#define GM_LPA_10000FULL 0x00040000
108	#define GM_LPA_10000HALF 0x00080000
109	#define GM_LPA_DUPLEX (GM_LPA_1000FULL \| GM_LPA_10000FULL \
110	\| LPA_DUPLEX)
111	#define GM_LPA_10 (LPA_10FULL \| LPA_10HALF)
112	#define GM_LPA_100 LPA_100
113	#define GM_LPA_1000 (GM_LPA_1000FULL \| GM_LPA_1000HALF)
114	#define GM_LPA_10000 (GM_LPA_10000FULL \| GM_LPA_10000HALF)
115
116	/* Retrieve GMII autonegotiation advertised abilities
117	*
118	* The MII advertisment register (MII_ADVERTISE) is logically extended
119	* to include advertisement bits ADVERTISE_1000FULL and
120	* ADVERTISE_1000HALF from MII_CTRL1000. The result can be tested
121	* against the GM_ADVERTISE_xxx constants.
122	*/
123	static inline unsigned int gmii_advertised(struct mii_if_info *gmii)
124	{
125	unsigned int advertise;
126	unsigned int ctrl1000;
127
128	advertise = gmii->mdio_read(gmii->dev, gmii->phy_id, MII_ADVERTISE);
129	ctrl1000 = gmii->mdio_read(gmii->dev, gmii->phy_id, MII_CTRL1000);
130	return (((ctrl1000 << 8) & GM_ADVERTISE_1000) \| advertise);
131	}
132
133	/* Retrieve GMII autonegotiation link partner abilities
134	*
135	* The MII link partner ability register (MII_LPA) is logically
136	* extended by adding bits LPA_1000HALF and LPA_1000FULL from
137	* MII_STAT1000. The result can be tested against the GM_LPA_xxx
138	* constants.
139	*/
140	static inline unsigned int gmii_lpa(struct mii_if_info *gmii)
141	{
142	unsigned int lpa;
143	unsigned int stat1000;
144
145	lpa = gmii->mdio_read(gmii->dev, gmii->phy_id, MII_LPA);
146	stat1000 = gmii->mdio_read(gmii->dev, gmii->phy_id, MII_STAT1000);
147	return (((stat1000 << 6) & GM_LPA_1000) \| lpa);
148	}
149
150	/* Calculate GMII autonegotiated link technology
151	*
152	* "negotiated" should be the result of gmii_advertised() logically
153	* ANDed with the result of gmii_lpa().
154	*
155	* "tech" will be negotiated with the unused bits masked out. For
156	* example, if both ends of the link are capable of both
157	* GM_LPA_1000FULL and GM_LPA_100FULL, GM_LPA_100FULL will be masked
158	* out.
159	*/
160	static inline unsigned int gmii_nway_result(unsigned int negotiated)
161	{
162	unsigned int other_bits;
163
164	/* Mask out the speed and duplexity bits */
165	other_bits = negotiated & ~(GM_LPA_10 \| GM_LPA_100 \| GM_LPA_1000);
166
167	if (negotiated & GM_LPA_1000FULL)
168	return (other_bits \| GM_LPA_1000FULL);
169	else if (negotiated & GM_LPA_1000HALF)
170	return (other_bits \| GM_LPA_1000HALF);
171	else
172	return (other_bits \| mii_nway_result(negotiated));
173	}
174
175	/* Calculate GMII non-autonegotiated link technology
176	*
177	* This provides an equivalent to gmii_nway_result for the case when
178	* autonegotiation is disabled.
179	*/
180	static inline unsigned int gmii_forced_result(unsigned int bmcr)
181	{
182	unsigned int result;
183	int full_duplex;
184
185	full_duplex = bmcr & BMCR_FULLDPLX;
186	if (bmcr & BMCR_SPEED1000)
187	result = full_duplex ? GM_LPA_1000FULL : GM_LPA_1000HALF;
188	else if (bmcr & BMCR_SPEED100)
189	result = full_duplex ? GM_LPA_100FULL : GM_LPA_100HALF;
190	else
191	result = full_duplex ? GM_LPA_10FULL : GM_LPA_10HALF;
192	return result;
193	}
194
195	#endif /* EFX_GMII_H */