[u-boot.git] / drivers / net / mcfmii.c

/*
 * Copyright (C) 2004-2008 Freescale Semiconductor, Inc.
 * TsiChung Liew ([email protected])
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <config.h>
#include <net.h>
#include <netdev.h>

#ifdef CONFIG_MCF547x_8x
#include <asm/fsl_mcdmafec.h>
#else
#include <asm/fec.h>
#endif
#include <asm/immap.h>

DECLARE_GLOBAL_DATA_PTR;

#if defined(CONFIG_CMD_NET) && defined(CONFIG_NET_MULTI)
#undef MII_DEBUG
#undef ET_DEBUG

/*extern int fecpin_setclear(struct eth_device *dev, int setclear);*/

#if defined(CONFIG_SYS_DISCOVER_PHY) || defined(CONFIG_CMD_MII)
#include <miiphy.h>

/* Make MII read/write commands for the FEC. */
#define mk_mii_read(ADDR, REG)		(0x60020000 | ((ADDR << 23) | \
					 (REG & 0x1f) << 18))
#define mk_mii_write(ADDR, REG, VAL)	(0x50020000 | ((ADDR << 23) | \
					 (REG & 0x1f) << 18) | (VAL & 0xffff))

#ifndef CONFIG_SYS_UNSPEC_PHYID
#	define CONFIG_SYS_UNSPEC_PHYID		0
#endif
#ifndef CONFIG_SYS_UNSPEC_STRID
#	define CONFIG_SYS_UNSPEC_STRID		0
#endif

#ifdef CONFIG_MCF547x_8x
typedef struct fec_info_dma FEC_INFO_T;
#define FEC_T fecdma_t
#else
typedef struct fec_info_s FEC_INFO_T;
#define FEC_T fec_t
#endif

typedef struct phy_info_struct {
	u32 phyid;
	char *strid;
} phy_info_t;

phy_info_t phyinfo[] = {
	{0x0022561B, "AMD79C784VC"},	/* AMD 79C784VC */
	{0x00406322, "BCM5222"},	/* Broadcom 5222 */
	{0x02a80150, "Intel82555"},	/* Intel 82555 */
	{0x0016f870, "LSI80225"},	/* LSI 80225 */
	{0x0016f880, "LSI80225/B"},	/* LSI 80225/B */
	{0x78100000, "LXT970"},		/* LXT970 */
	{0x001378e0, "LXT971"},		/* LXT971 and 972 */
	{0x00221619, "KS8721BL"},	/* Micrel KS8721BL/SL */
	{0x00221512, "KSZ8041NL"},	/* Micrel KSZ8041NL */
	{0x20005CE1, "N83640"},		/* National 83640 */
	{0x20005C90, "N83848"},		/* National 83848 */
	{0x20005CA2, "N83849"},		/* National 83849 */
	{0x01814400, "QS6612"},		/* QS6612 */
#if defined(CONFIG_SYS_UNSPEC_PHYID) && defined(CONFIG_SYS_UNSPEC_STRID)
	{CONFIG_SYS_UNSPEC_PHYID, CONFIG_SYS_UNSPEC_STRID},
#endif
	{0, 0}
};

/*
 * mii_init -- Initialize the MII for MII command without ethernet
 * This function is a subset of eth_init
 */
void mii_reset(FEC_INFO_T *info)
{
	volatile FEC_T *fecp = (FEC_T *) (info->miibase);
	int i;

	fecp->ecr = FEC_ECR_RESET;

	for (i = 0; (fecp->ecr & FEC_ECR_RESET) && (i < FEC_RESET_DELAY); ++i) {
		udelay(1);
	}
	if (i == FEC_RESET_DELAY)
		printf("FEC_RESET_DELAY timeout\n");
}

/* send command to phy using mii, wait for result */
uint mii_send(uint mii_cmd)
{
	FEC_INFO_T *info;
	volatile FEC_T *ep;
	struct eth_device *dev;
	uint mii_reply;
	int j = 0;

	/* retrieve from register structure */
	dev = eth_get_dev();
	info = dev->priv;

	ep = (FEC_T *) info->miibase;

	ep->mmfr = mii_cmd;	/* command to phy */

	/* wait for mii complete */
	while (!(ep->eir & FEC_EIR_MII) && (j < MCFFEC_TOUT_LOOP)) {
		udelay(1);
		j++;
	}
	if (j >= MCFFEC_TOUT_LOOP) {
		printf("MII not complete\n");
		return -1;
	}

	mii_reply = ep->mmfr;	/* result from phy */
	ep->eir = FEC_EIR_MII;	/* clear MII complete */
#ifdef ET_DEBUG
	printf("%s[%d] %s: sent=0x%8.8x, reply=0x%8.8x\n",
	       __FILE__, __LINE__, __FUNCTION__, mii_cmd, mii_reply);
#endif

	return (mii_reply & 0xffff);	/* data read from phy */
}
#endif				/* CONFIG_SYS_DISCOVER_PHY || (CONFIG_MII) */

#if defined(CONFIG_SYS_DISCOVER_PHY)
int mii_discover_phy(struct eth_device *dev)
{
#define MAX_PHY_PASSES 11
	FEC_INFO_T *info = dev->priv;
	int phyaddr, pass;
	uint phyno, phytype;
	int i, found = 0;

	if (info->phyname_init)
		return info->phy_addr;

	phyaddr = -1;		/* didn't find a PHY yet */
	for (pass = 1; pass <= MAX_PHY_PASSES && phyaddr < 0; ++pass) {
		if (pass > 1) {
			/* PHY may need more time to recover from reset.
			 * The LXT970 needs 50ms typical, no maximum is
			 * specified, so wait 10ms before try again.
			 * With 11 passes this gives it 100ms to wake up.
			 */
			udelay(10000);	/* wait 10ms */
		}

		for (phyno = 0; phyno < 32 && phyaddr < 0; ++phyno) {

			phytype = mii_send(mk_mii_read(phyno, PHY_PHYIDR1));
#ifdef ET_DEBUG
			printf("PHY type 0x%x pass %d type\n", phytype, pass);
#endif
			if (phytype != 0xffff) {
				phyaddr = phyno;
				phytype <<= 16;
				phytype |=
				    mii_send(mk_mii_read(phyno, PHY_PHYIDR2));

#ifdef ET_DEBUG
				printf("PHY @ 0x%x pass %d\n", phyno, pass);
#endif

				for (i = 0; i < (sizeof(phyinfo) / sizeof(phy_info_t)); i++) {
					if (phyinfo[i].phyid == phytype) {
#ifdef ET_DEBUG
						printf("phyid %x - %s\n",
						       phyinfo[i].phyid,
						       phyinfo[i].strid);
#endif
						strcpy(info->phy_name, phyinfo[i].strid);
						info->phyname_init = 1;
						found = 1;
						break;
					}
				}

				if (!found) {
#ifdef ET_DEBUG
					printf("0x%08x\n", phytype);
#endif
					strcpy(info->phy_name, "unknown");
					info->phyname_init = 1;
					break;
				}
			}
		}
	}

	if (phyaddr < 0)
		printf("No PHY device found.\n");

	return phyaddr;
}
#endif				/* CONFIG_SYS_DISCOVER_PHY */

void mii_init(void) __attribute__((weak,alias("__mii_init")));

void __mii_init(void)
{
	FEC_INFO_T *info;
	volatile FEC_T *fecp;
	struct eth_device *dev;
	int miispd = 0, i = 0;
	u16 status = 0;
	u16 linkgood = 0;

	/* retrieve from register structure */
	dev = eth_get_dev();
	info = dev->priv;

	fecp = (FEC_T *) info->miibase;

	fecpin_setclear(dev, 1);

	mii_reset(info);

	/* We use strictly polling mode only */
	fecp->eimr = 0;

	/* Clear any pending interrupt */
	fecp->eir = 0xffffffff;

	/* Set MII speed */
	miispd = (gd->bus_clk / 1000000) / 5;
	fecp->mscr = miispd << 1;

	info->phy_addr = mii_discover_phy(dev);

	while (i < MCFFEC_TOUT_LOOP) {
		status = 0;
		i++;
		/* Read PHY control register */
		miiphy_read(dev->name, info->phy_addr, PHY_BMCR, &status);

		/* If phy set to autonegotiate, wait for autonegotiation done,
		 * if phy is not autonegotiating, just wait for link up.
		 */
		if ((status & PHY_BMCR_AUTON) == PHY_BMCR_AUTON) {
			linkgood = (PHY_BMSR_AUTN_COMP | PHY_BMSR_LS);
		} else {
			linkgood = PHY_BMSR_LS;
		}
		/* Read PHY status register */
		miiphy_read(dev->name, info->phy_addr, PHY_BMSR, &status);
		if ((status & linkgood) == linkgood)
			break;

		udelay(500);
	}
	if (i >= MCFFEC_TOUT_LOOP) {
		printf("Link UP timeout\n");
	}

	/* adapt to the duplex and speed settings of the phy */
	info->dup_spd = miiphy_duplex(dev->name, info->phy_addr) << 16;
	info->dup_spd |= miiphy_speed(dev->name, info->phy_addr);
}

/*
 * Read and write a MII PHY register, routines used by MII Utilities
 *
 * FIXME: These routines are expected to return 0 on success, but mii_send
 *	  does _not_ return an error code. Maybe 0xFFFF means error, i.e.
 *	  no PHY connected...
 *	  For now always return 0.
 * FIXME: These routines only work after calling eth_init() at least once!
 *	  Otherwise they hang in mii_send() !!! Sorry!
 */

int mcffec_miiphy_read(char *devname, unsigned char addr, unsigned char reg,
		       unsigned short *value)
{
	short rdreg;		/* register working value */

#ifdef MII_DEBUG
	printf("miiphy_read(0x%x) @ 0x%x = ", reg, addr);
#endif
	rdreg = mii_send(mk_mii_read(addr, reg));

	*value = rdreg;

#ifdef MII_DEBUG
	printf("0x%04x\n", *value);
#endif

	return 0;
}

int mcffec_miiphy_write(char *devname, unsigned char addr, unsigned char reg,
			unsigned short value)
{
	short rdreg;		/* register working value */

#ifdef MII_DEBUG
	printf("miiphy_write(0x%x) @ 0x%x = ", reg, addr);
#endif

	rdreg = mii_send(mk_mii_write(addr, reg, value));

#ifdef MII_DEBUG
	printf("0x%04x\n", value);
#endif

	return 0;
}

#endif				/* CONFIG_CMD_NET, FEC_ENET & NET_MULTI */
Commit	Line	Data
54bdcc9f TL	1	/*
	2	* Copyright (C) 2004-2008 Freescale Semiconductor, Inc.
	3	* TsiChung Liew ([email protected])
	4	*
	5	* See file CREDITS for list of people who contributed to this
	6	* project.
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License as
	10	* published by the Free Software Foundation; either version 2 of
	11	* the License, or (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	21	* MA 02111-1307 USA
	22	*/
	23
	24	#include <common.h>
	25	#include <config.h>
	26	#include <net.h>
	27	#include <netdev.h>
	28
	29	#ifdef CONFIG_MCF547x_8x
	30	#include <asm/fsl_mcdmafec.h>
	31	#else
	32	#include <asm/fec.h>
	33	#endif
	34	#include <asm/immap.h>
	35
	36	DECLARE_GLOBAL_DATA_PTR;
	37
	38	#if defined(CONFIG_CMD_NET) && defined(CONFIG_NET_MULTI)
	39	#undef MII_DEBUG
	40	#undef ET_DEBUG
	41
	42	/extern int fecpin_setclear(struct eth_device dev, int setclear);*/
	43
	44	#if defined(CONFIG_SYS_DISCOVER_PHY) \|\| defined(CONFIG_CMD_MII)
	45	#include <miiphy.h>
	46
	47	/* Make MII read/write commands for the FEC. */
	48	#define mk_mii_read(ADDR, REG) (0x60020000 \| ((ADDR << 23) \| \
	49	(REG & 0x1f) << 18))
	50	#define mk_mii_write(ADDR, REG, VAL) (0x50020000 \| ((ADDR << 23) \| \
	51	(REG & 0x1f) << 18) \| (VAL & 0xffff))
	52
	53	#ifndef CONFIG_SYS_UNSPEC_PHYID
	54	# define CONFIG_SYS_UNSPEC_PHYID 0
	55	#endif
	56	#ifndef CONFIG_SYS_UNSPEC_STRID
	57	# define CONFIG_SYS_UNSPEC_STRID 0
	58	#endif
	59
	60	#ifdef CONFIG_MCF547x_8x
	61	typedef struct fec_info_dma FEC_INFO_T;
	62	#define FEC_T fecdma_t
	63	#else
	64	typedef struct fec_info_s FEC_INFO_T;
65	#define FEC_T fec_t
66	#endif
67
68	typedef struct phy_info_struct {
69	u32 phyid;
70	char *strid;
71	} phy_info_t;
72
73	phy_info_t phyinfo[] = {
74	{0x0022561B, "AMD79C784VC"}, /* AMD 79C784VC */
75	{0x00406322, "BCM5222"}, /* Broadcom 5222 */
76	{0x02a80150, "Intel82555"}, /* Intel 82555 */
77	{0x0016f870, "LSI80225"}, /* LSI 80225 */
78	{0x0016f880, "LSI80225/B"}, /* LSI 80225/B */
79	{0x78100000, "LXT970"}, /* LXT970 */
80	{0x001378e0, "LXT971"}, /* LXT971 and 972 */
81	{0x00221619, "KS8721BL"}, /* Micrel KS8721BL/SL */
82	{0x00221512, "KSZ8041NL"}, /* Micrel KSZ8041NL */
83	{0x20005CE1, "N83640"}, /* National 83640 */
84	{0x20005C90, "N83848"}, /* National 83848 */
85	{0x20005CA2, "N83849"}, /* National 83849 */
86	{0x01814400, "QS6612"}, /* QS6612 */
87	#if defined(CONFIG_SYS_UNSPEC_PHYID) && defined(CONFIG_SYS_UNSPEC_STRID)
88	{CONFIG_SYS_UNSPEC_PHYID, CONFIG_SYS_UNSPEC_STRID},
89	#endif
90	{0, 0}
91	};
92
93	/*
94	* mii_init -- Initialize the MII for MII command without ethernet
95	* This function is a subset of eth_init
96	*/
97	void mii_reset(FEC_INFO_T *info)
98	{
99	volatile FEC_T fecp = (FEC_T ) (info->miibase);
100	int i;
101
102	fecp->ecr = FEC_ECR_RESET;
103
104	for (i = 0; (fecp->ecr & FEC_ECR_RESET) && (i < FEC_RESET_DELAY); ++i) {
105	udelay(1);
106	}
107	if (i == FEC_RESET_DELAY)
108	printf("FEC_RESET_DELAY timeout\n");
109	}
110
111	/* send command to phy using mii, wait for result */
112	uint mii_send(uint mii_cmd)
113	{
114	FEC_INFO_T *info;
115	volatile FEC_T *ep;
116	struct eth_device *dev;
117	uint mii_reply;
118	int j = 0;
119
120	/* retrieve from register structure */
121	dev = eth_get_dev();
122	info = dev->priv;
123
124	ep = (FEC_T *) info->miibase;
125
126	ep->mmfr = mii_cmd; /* command to phy */
127
128	/* wait for mii complete */
129	while (!(ep->eir & FEC_EIR_MII) && (j < MCFFEC_TOUT_LOOP)) {
130	udelay(1);
131	j++;
132	}
133	if (j >= MCFFEC_TOUT_LOOP) {
134	printf("MII not complete\n");
135	return -1;
136	}
137
138	mii_reply = ep->mmfr; /* result from phy */
139	ep->eir = FEC_EIR_MII; /* clear MII complete */
140	#ifdef ET_DEBUG
141	printf("%s[%d] %s: sent=0x%8.8x, reply=0x%8.8x\n",
142	__FILE__, __LINE__, __FUNCTION__, mii_cmd, mii_reply);
143	#endif
144
145	return (mii_reply & 0xffff); /* data read from phy */
146	}
147	#endif /* CONFIG_SYS_DISCOVER_PHY \|\| (CONFIG_MII) */
148
149	#if defined(CONFIG_SYS_DISCOVER_PHY)
150	int mii_discover_phy(struct eth_device *dev)
151	{
152	#define MAX_PHY_PASSES 11
153	FEC_INFO_T *info = dev->priv;
154	int phyaddr, pass;
155	uint phyno, phytype;
156	int i, found = 0;
157
158	if (info->phyname_init)
159	return info->phy_addr;
160
161	phyaddr = -1; /* didn't find a PHY yet */
162	for (pass = 1; pass <= MAX_PHY_PASSES && phyaddr < 0; ++pass) {
163	if (pass > 1) {
164	/* PHY may need more time to recover from reset.
165	* The LXT970 needs 50ms typical, no maximum is
166	* specified, so wait 10ms before try again.
167	* With 11 passes this gives it 100ms to wake up.
168	*/
169	udelay(10000); /* wait 10ms */
170	}
171
172	for (phyno = 0; phyno < 32 && phyaddr < 0; ++phyno) {
173
174	phytype = mii_send(mk_mii_read(phyno, PHY_PHYIDR1));
175	#ifdef ET_DEBUG
176	printf("PHY type 0x%x pass %d type\n", phytype, pass);
177	#endif
178	if (phytype != 0xffff) {
179	phyaddr = phyno;
180	phytype <<= 16;
181	phytype \|=
182	mii_send(mk_mii_read(phyno, PHY_PHYIDR2));
183
184	#ifdef ET_DEBUG
185	printf("PHY @ 0x%x pass %d\n", phyno, pass);
186	#endif
187
188	for (i = 0; i < (sizeof(phyinfo) / sizeof(phy_info_t)); i++) {
189	if (phyinfo[i].phyid == phytype) {
190	#ifdef ET_DEBUG
191	printf("phyid %x - %s\n",
192	phyinfo[i].phyid,
193	phyinfo[i].strid);
194	#endif
195	strcpy(info->phy_name, phyinfo[i].strid);
196	info->phyname_init = 1;
197	found = 1;
198	break;
199	}
200	}
201
202	if (!found) {
203	#ifdef ET_DEBUG
204	printf("0x%08x\n", phytype);
205	#endif
206	strcpy(info->phy_name, "unknown");
207	info->phyname_init = 1;
208	break;
209	}
210	}
211	}
212	}
213
214	if (phyaddr < 0)
215	printf("No PHY device found.\n");
216
217	return phyaddr;
218	}
219	#endif /* CONFIG_SYS_DISCOVER_PHY */
220
221	void mii_init(void) __attribute__((weak,alias("__mii_init")));
222
223	void __mii_init(void)
224	{
225	FEC_INFO_T *info;
226	volatile FEC_T *fecp;
227	struct eth_device *dev;
228	int miispd = 0, i = 0;
c4ff77f5 RR	229	u16 status = 0;
c4ff77f5 RR	230	u16 linkgood = 0;
54bdcc9f TL	231
	232	/* retrieve from register structure */
	233	dev = eth_get_dev();
	234	info = dev->priv;
	235
	236	fecp = (FEC_T *) info->miibase;
	237
	238	fecpin_setclear(dev, 1);
	239
	240	mii_reset(info);
	241
	242	/* We use strictly polling mode only */
	243	fecp->eimr = 0;
	244
	245	/* Clear any pending interrupt */
	246	fecp->eir = 0xffffffff;
	247
	248	/* Set MII speed */
	249	miispd = (gd->bus_clk / 1000000) / 5;
	250	fecp->mscr = miispd << 1;
	251
	252	info->phy_addr = mii_discover_phy(dev);
	253
54bdcc9f	254	while (i < MCFFEC_TOUT_LOOP) {
c4ff77f5	255	status = 0;
54bdcc9f	256	i++;
c4ff77f5 RR	257	/* Read PHY control register */
	258	miiphy_read(dev->name, info->phy_addr, PHY_BMCR, &status);
	259
	260	/* If phy set to autonegotiate, wait for autonegotiation done,
	261	* if phy is not autonegotiating, just wait for link up.
	262	*/
	263	if ((status & PHY_BMCR_AUTON) == PHY_BMCR_AUTON) {
	264	linkgood = (PHY_BMSR_AUTN_COMP \| PHY_BMSR_LS);
	265	} else {
	266	linkgood = PHY_BMSR_LS;
	267	}
	268	/* Read PHY status register */
	269	miiphy_read(dev->name, info->phy_addr, PHY_BMSR, &status);
	270	if ((status & linkgood) == linkgood)
54bdcc9f TL	271	break;
	272
	273	udelay(500);
	274	}
	275	if (i >= MCFFEC_TOUT_LOOP) {
c4ff77f5	276	printf("Link UP timeout\n");
54bdcc9f TL	277	}
54bdcc9f TL	278
c4ff77f5	279	/* adapt to the duplex and speed settings of the phy */
54bdcc9f TL	280	info->dup_spd = miiphy_duplex(dev->name, info->phy_addr) << 16;
	281	info->dup_spd \|= miiphy_speed(dev->name, info->phy_addr);
	282	}
	283
	284	/*
	285	* Read and write a MII PHY register, routines used by MII Utilities
	286	*
	287	* FIXME: These routines are expected to return 0 on success, but mii_send
	288	* does _not_ return an error code. Maybe 0xFFFF means error, i.e.
	289	* no PHY connected...
	290	* For now always return 0.
	291	* FIXME: These routines only work after calling eth_init() at least once!
	292	* Otherwise they hang in mii_send() !!! Sorry!
	293	*/
	294
	295	int mcffec_miiphy_read(char *devname, unsigned char addr, unsigned char reg,
	296	unsigned short *value)
	297	{
	298	short rdreg; /* register working value */
	299
	300	#ifdef MII_DEBUG
	301	printf("miiphy_read(0x%x) @ 0x%x = ", reg, addr);
	302	#endif
	303	rdreg = mii_send(mk_mii_read(addr, reg));
	304
	305	*value = rdreg;
	306
	307	#ifdef MII_DEBUG
	308	printf("0x%04x\n", *value);
	309	#endif
	310
	311	return 0;
	312	}
	313
	314	int mcffec_miiphy_write(char *devname, unsigned char addr, unsigned char reg,
	315	unsigned short value)
	316	{
	317	short rdreg; /* register working value */
	318
	319	#ifdef MII_DEBUG
	320	printf("miiphy_write(0x%x) @ 0x%x = ", reg, addr);
	321	#endif
	322
	323	rdreg = mii_send(mk_mii_write(addr, reg, value));
	324
	325	#ifdef MII_DEBUG
	326	printf("0x%04x\n", value);
	327	#endif
	328
	329	return 0;
	330	}
	331
	332	#endif /* CONFIG_CMD_NET, FEC_ENET & NET_MULTI */