[deliverable/linux.git] / drivers / net / tulip / 21142.c

/*
	drivers/net/tulip/21142.c

	Copyright 2000,2001  The Linux Kernel Team
	Written/copyright 1994-2001 by Donald Becker.

	This software may be used and distributed according to the terms
	of the GNU General Public License, incorporated herein by reference.

	Please refer to Documentation/DocBook/tulip-user.{pdf,ps,html}
	for more information on this driver.
	Please submit bugs to http://bugzilla.kernel.org/ .
*/

#include <linux/delay.h>
#include "tulip.h"


static u16 t21142_csr13[] = { 0x0001, 0x0009, 0x0009, 0x0000, 0x0001, };
u16 t21142_csr14[] =	    { 0xFFFF, 0x0705, 0x0705, 0x0000, 0x7F3D, };
static u16 t21142_csr15[] = { 0x0008, 0x0006, 0x000E, 0x0008, 0x0008, };


/* Handle the 21143 uniquely: do autoselect with NWay, not the EEPROM list
   of available transceivers.  */
void t21142_media_task(struct work_struct *work)
{
	struct tulip_private *tp =
		container_of(work, struct tulip_private, media_work);
	struct net_device *dev = tp->dev;
	void __iomem *ioaddr = tp->base_addr;
	int csr12 = ioread32(ioaddr + CSR12);
	int next_tick = 60*HZ;
	int new_csr6 = 0;

	if (tulip_debug > 2)
		printk(KERN_INFO"%s: 21143 negotiation status %8.8x, %s.\n",
			   dev->name, csr12, medianame[dev->if_port]);
	if (tulip_media_cap[dev->if_port] & MediaIsMII) {
		if (tulip_check_duplex(dev) < 0) {
			netif_carrier_off(dev);
			next_tick = 3*HZ;
		} else {
			netif_carrier_on(dev);
			next_tick = 60*HZ;
		}
	} else if (tp->nwayset) {
		/* Don't screw up a negotiated session! */
		if (tulip_debug > 1)
			printk(KERN_INFO"%s: Using NWay-set %s media, csr12 %8.8x.\n",
				   dev->name, medianame[dev->if_port], csr12);
	} else if (tp->medialock) {
			;
	} else if (dev->if_port == 3) {
		if (csr12 & 2) {	/* No 100mbps link beat, revert to 10mbps. */
			if (tulip_debug > 1)
				printk(KERN_INFO"%s: No 21143 100baseTx link beat, %8.8x, "
					   "trying NWay.\n", dev->name, csr12);
			t21142_start_nway(dev);
			next_tick = 3*HZ;
		}
	} else if ((csr12 & 0x7000) != 0x5000) {
		/* Negotiation failed.  Search media types. */
		if (tulip_debug > 1)
			printk(KERN_INFO"%s: 21143 negotiation failed, status %8.8x.\n",
				   dev->name, csr12);
		if (!(csr12 & 4)) {		/* 10mbps link beat good. */
			new_csr6 = 0x82420000;
			dev->if_port = 0;
			iowrite32(0, ioaddr + CSR13);
			iowrite32(0x0003FFFF, ioaddr + CSR14);
			iowrite16(t21142_csr15[dev->if_port], ioaddr + CSR15);
			iowrite32(t21142_csr13[dev->if_port], ioaddr + CSR13);
		} else {
			/* Select 100mbps port to check for link beat. */
			new_csr6 = 0x83860000;
			dev->if_port = 3;
			iowrite32(0, ioaddr + CSR13);
			iowrite32(0x0003FF7F, ioaddr + CSR14);
			iowrite16(8, ioaddr + CSR15);
			iowrite32(1, ioaddr + CSR13);
		}
		if (tulip_debug > 1)
			printk(KERN_INFO"%s: Testing new 21143 media %s.\n",
				   dev->name, medianame[dev->if_port]);
		if (new_csr6 != (tp->csr6 & ~0x00D5)) {
			tp->csr6 &= 0x00D5;
			tp->csr6 |= new_csr6;
			iowrite32(0x0301, ioaddr + CSR12);
			tulip_restart_rxtx(tp);
		}
		next_tick = 3*HZ;
	}

	/* mod_timer synchronizes us with potential add_timer calls
	 * from interrupts.
	 */
	mod_timer(&tp->timer, RUN_AT(next_tick));
}


void t21142_start_nway(struct net_device *dev)
{
	struct tulip_private *tp = netdev_priv(dev);
	void __iomem *ioaddr = tp->base_addr;
	int csr14 = ((tp->sym_advertise & 0x0780) << 9)  |
		((tp->sym_advertise & 0x0020) << 1) | 0xffbf;

	dev->if_port = 0;
	tp->nway = tp->mediasense = 1;
	tp->nwayset = tp->lpar = 0;
	if (tulip_debug > 1)
		printk(KERN_DEBUG "%s: Restarting 21143 autonegotiation, csr14=%8.8x.\n",
			   dev->name, csr14);
	iowrite32(0x0001, ioaddr + CSR13);
	udelay(100);
	iowrite32(csr14, ioaddr + CSR14);
	tp->csr6 = 0x82420000 | (tp->sym_advertise & 0x0040 ? FullDuplex : 0);
	iowrite32(tp->csr6, ioaddr + CSR6);
	if (tp->mtable  &&  tp->mtable->csr15dir) {
		iowrite32(tp->mtable->csr15dir, ioaddr + CSR15);
		iowrite32(tp->mtable->csr15val, ioaddr + CSR15);
	} else
		iowrite16(0x0008, ioaddr + CSR15);
	iowrite32(0x1301, ioaddr + CSR12); 		/* Trigger NWAY. */
}


void t21142_lnk_change(struct net_device *dev, int csr5)
{
	struct tulip_private *tp = netdev_priv(dev);
	void __iomem *ioaddr = tp->base_addr;
	int csr12 = ioread32(ioaddr + CSR12);

	if (tulip_debug > 1)
		printk(KERN_INFO"%s: 21143 link status interrupt %8.8x, CSR5 %x, "
			   "%8.8x.\n", dev->name, csr12, csr5, ioread32(ioaddr + CSR14));

	/* If NWay finished and we have a negotiated partner capability. */
	if (tp->nway  &&  !tp->nwayset  &&  (csr12 & 0x7000) == 0x5000) {
		int setup_done = 0;
		int negotiated = tp->sym_advertise & (csr12 >> 16);
		tp->lpar = csr12 >> 16;
		tp->nwayset = 1;
		if (negotiated & 0x0100)		dev->if_port = 5;
		else if (negotiated & 0x0080)	dev->if_port = 3;
		else if (negotiated & 0x0040)	dev->if_port = 4;
		else if (negotiated & 0x0020)	dev->if_port = 0;
		else {
			tp->nwayset = 0;
			if ((csr12 & 2) == 0  &&  (tp->sym_advertise & 0x0180))
				dev->if_port = 3;
		}
		tp->full_duplex = (tulip_media_cap[dev->if_port] & MediaAlwaysFD) ? 1:0;

		if (tulip_debug > 1) {
			if (tp->nwayset)
				printk(KERN_INFO "%s: Switching to %s based on link "
					   "negotiation %4.4x & %4.4x = %4.4x.\n",
					   dev->name, medianame[dev->if_port], tp->sym_advertise,
					   tp->lpar, negotiated);
			else
				printk(KERN_INFO "%s: Autonegotiation failed, using %s,"
					   " link beat status %4.4x.\n",
					   dev->name, medianame[dev->if_port], csr12);
		}

		if (tp->mtable) {
			int i;
			for (i = 0; i < tp->mtable->leafcount; i++)
				if (tp->mtable->mleaf[i].media == dev->if_port) {
					int startup = ! ((tp->chip_id == DC21143 && (tp->revision == 48 || tp->revision == 65)));
					tp->cur_index = i;
					tulip_select_media(dev, startup);
					setup_done = 1;
					break;
				}
		}
		if ( ! setup_done) {
			tp->csr6 = (dev->if_port & 1 ? 0x838E0000 : 0x82420000) | (tp->csr6 & 0x20ff);
			if (tp->full_duplex)
				tp->csr6 |= 0x0200;
			iowrite32(1, ioaddr + CSR13);
		}
#if 0							/* Restart shouldn't be needed. */
		iowrite32(tp->csr6 | RxOn, ioaddr + CSR6);
		if (tulip_debug > 2)
			printk(KERN_DEBUG "%s:  Restarting Tx and Rx, CSR5 is %8.8x.\n",
				   dev->name, ioread32(ioaddr + CSR5));
#endif
		tulip_start_rxtx(tp);
		if (tulip_debug > 2)
			printk(KERN_DEBUG "%s:  Setting CSR6 %8.8x/%x CSR12 %8.8x.\n",
				   dev->name, tp->csr6, ioread32(ioaddr + CSR6),
				   ioread32(ioaddr + CSR12));
	} else if ((tp->nwayset  &&  (csr5 & 0x08000000)
				&& (dev->if_port == 3  ||  dev->if_port == 5)
				&& (csr12 & 2) == 2) ||
			   (tp->nway && (csr5 & (TPLnkFail)))) {
		/* Link blew? Maybe restart NWay. */
		del_timer_sync(&tp->timer);
		t21142_start_nway(dev);
		tp->timer.expires = RUN_AT(3*HZ);
		add_timer(&tp->timer);
	} else if (dev->if_port == 3  ||  dev->if_port == 5) {
		if (tulip_debug > 1)
			printk(KERN_INFO"%s: 21143 %s link beat %s.\n",
				   dev->name, medianame[dev->if_port],
				   (csr12 & 2) ? "failed" : "good");
		if ((csr12 & 2)  &&  ! tp->medialock) {
			del_timer_sync(&tp->timer);
			t21142_start_nway(dev);
			tp->timer.expires = RUN_AT(3*HZ);
			add_timer(&tp->timer);
		} else if (dev->if_port == 5)
			iowrite32(ioread32(ioaddr + CSR14) & ~0x080, ioaddr + CSR14);
	} else if (dev->if_port == 0  ||  dev->if_port == 4) {
		if ((csr12 & 4) == 0)
			printk(KERN_INFO"%s: 21143 10baseT link beat good.\n",
				   dev->name);
	} else if (!(csr12 & 4)) {		/* 10mbps link beat good. */
		if (tulip_debug)
			printk(KERN_INFO"%s: 21143 10mbps sensed media.\n",
				   dev->name);
		dev->if_port = 0;
	} else if (tp->nwayset) {
		if (tulip_debug)
			printk(KERN_INFO"%s: 21143 using NWay-set %s, csr6 %8.8x.\n",
				   dev->name, medianame[dev->if_port], tp->csr6);
	} else {		/* 100mbps link beat good. */
		if (tulip_debug)
			printk(KERN_INFO"%s: 21143 100baseTx sensed media.\n",
				   dev->name);
		dev->if_port = 3;
		tp->csr6 = 0x838E0000 | (tp->csr6 & 0x20ff);
		iowrite32(0x0003FF7F, ioaddr + CSR14);
		iowrite32(0x0301, ioaddr + CSR12);
		tulip_restart_rxtx(tp);
	}
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	drivers/net/tulip/21142.c
	3
1da177e4 LT	4	Copyright 2000,2001 The Linux Kernel Team
	5	Written/copyright 1994-2001 by Donald Becker.
	6
	7	This software may be used and distributed according to the terms
	8	of the GNU General Public License, incorporated herein by reference.
	9
	10	Please refer to Documentation/DocBook/tulip-user.{pdf,ps,html}
78a65518 GG	11	for more information on this driver.
78a65518 GG	12	Please submit bugs to http://bugzilla.kernel.org/ .
1da177e4 LT	13	*/
1da177e4 LT	14
1da177e4 LT	15	#include <linux/delay.h>
	16	#include "tulip.h"
	17
	18
	19	static u16 t21142_csr13[] = { 0x0001, 0x0009, 0x0009, 0x0000, 0x0001, };
	20	u16 t21142_csr14[] = { 0xFFFF, 0x0705, 0x0705, 0x0000, 0x7F3D, };
	21	static u16 t21142_csr15[] = { 0x0008, 0x0006, 0x000E, 0x0008, 0x0008, };
	22
	23
	24	/* Handle the 21143 uniquely: do autoselect with NWay, not the EEPROM list
	25	of available transceivers. */
c4028958	26	void t21142_media_task(struct work_struct *work)
1da177e4	27	{
c4028958 DH	28	struct tulip_private *tp =
	29	container_of(work, struct tulip_private, media_work);
	30	struct net_device *dev = tp->dev;
1da177e4 LT	31	void __iomem *ioaddr = tp->base_addr;
	32	int csr12 = ioread32(ioaddr + CSR12);
	33	int next_tick = 60*HZ;
	34	int new_csr6 = 0;
	35
	36	if (tulip_debug > 2)
	37	printk(KERN_INFO"%s: 21143 negotiation status %8.8x, %s.\n",
	38	dev->name, csr12, medianame[dev->if_port]);
	39	if (tulip_media_cap[dev->if_port] & MediaIsMII) {
	40	if (tulip_check_duplex(dev) < 0) {
	41	netif_carrier_off(dev);
	42	next_tick = 3*HZ;
	43	} else {
	44	netif_carrier_on(dev);
	45	next_tick = 60*HZ;
	46	}
	47	} else if (tp->nwayset) {
	48	/* Don't screw up a negotiated session! */
	49	if (tulip_debug > 1)
	50	printk(KERN_INFO"%s: Using NWay-set %s media, csr12 %8.8x.\n",
	51	dev->name, medianame[dev->if_port], csr12);
	52	} else if (tp->medialock) {
	53	;
	54	} else if (dev->if_port == 3) {
	55	if (csr12 & 2) { /* No 100mbps link beat, revert to 10mbps. */
	56	if (tulip_debug > 1)
	57	printk(KERN_INFO"%s: No 21143 100baseTx link beat, %8.8x, "
	58	"trying NWay.\n", dev->name, csr12);
	59	t21142_start_nway(dev);
	60	next_tick = 3*HZ;
	61	}
	62	} else if ((csr12 & 0x7000) != 0x5000) {
	63	/* Negotiation failed. Search media types. */
	64	if (tulip_debug > 1)
	65	printk(KERN_INFO"%s: 21143 negotiation failed, status %8.8x.\n",
	66	dev->name, csr12);
	67	if (!(csr12 & 4)) { /* 10mbps link beat good. */
	68	new_csr6 = 0x82420000;
	69	dev->if_port = 0;
	70	iowrite32(0, ioaddr + CSR13);
	71	iowrite32(0x0003FFFF, ioaddr + CSR14);
	72	iowrite16(t21142_csr15[dev->if_port], ioaddr + CSR15);
	73	iowrite32(t21142_csr13[dev->if_port], ioaddr + CSR13);
	74	} else {
	75	/* Select 100mbps port to check for link beat. */
	76	new_csr6 = 0x83860000;
	77	dev->if_port = 3;
	78	iowrite32(0, ioaddr + CSR13);
	79	iowrite32(0x0003FF7F, ioaddr + CSR14);
	80	iowrite16(8, ioaddr + CSR15);
	81	iowrite32(1, ioaddr + CSR13);
	82	}
	83	if (tulip_debug > 1)
	84	printk(KERN_INFO"%s: Testing new 21143 media %s.\n",
	85	dev->name, medianame[dev->if_port]);
	86	if (new_csr6 != (tp->csr6 & ~0x00D5)) {
	87	tp->csr6 &= 0x00D5;
	88	tp->csr6 \|= new_csr6;
	89	iowrite32(0x0301, ioaddr + CSR12);
	90	tulip_restart_rxtx(tp);
	91	}
	92	next_tick = 3*HZ;
	93	}
	94
95	/* mod_timer synchronizes us with potential add_timer calls
96	* from interrupts.
97	*/
98	mod_timer(&tp->timer, RUN_AT(next_tick));
99	}
100
101
102	void t21142_start_nway(struct net_device *dev)
103	{
104	struct tulip_private *tp = netdev_priv(dev);
105	void __iomem *ioaddr = tp->base_addr;
106	int csr14 = ((tp->sym_advertise & 0x0780) << 9) \|
107	((tp->sym_advertise & 0x0020) << 1) \| 0xffbf;
108
109	dev->if_port = 0;
110	tp->nway = tp->mediasense = 1;
111	tp->nwayset = tp->lpar = 0;
112	if (tulip_debug > 1)
113	printk(KERN_DEBUG "%s: Restarting 21143 autonegotiation, csr14=%8.8x.\n",
114	dev->name, csr14);
115	iowrite32(0x0001, ioaddr + CSR13);
116	udelay(100);
117	iowrite32(csr14, ioaddr + CSR14);
118	tp->csr6 = 0x82420000 \| (tp->sym_advertise & 0x0040 ? FullDuplex : 0);
119	iowrite32(tp->csr6, ioaddr + CSR6);
120	if (tp->mtable && tp->mtable->csr15dir) {
121	iowrite32(tp->mtable->csr15dir, ioaddr + CSR15);
122	iowrite32(tp->mtable->csr15val, ioaddr + CSR15);
123	} else
124	iowrite16(0x0008, ioaddr + CSR15);
125	iowrite32(0x1301, ioaddr + CSR12); /* Trigger NWAY. */
126	}
127
128
129
130	void t21142_lnk_change(struct net_device *dev, int csr5)
131	{
132	struct tulip_private *tp = netdev_priv(dev);
133	void __iomem *ioaddr = tp->base_addr;
134	int csr12 = ioread32(ioaddr + CSR12);
135
136	if (tulip_debug > 1)
137	printk(KERN_INFO"%s: 21143 link status interrupt %8.8x, CSR5 %x, "
138	"%8.8x.\n", dev->name, csr12, csr5, ioread32(ioaddr + CSR14));
139
140	/* If NWay finished and we have a negotiated partner capability. */
141	if (tp->nway && !tp->nwayset && (csr12 & 0x7000) == 0x5000) {
142	int setup_done = 0;
143	int negotiated = tp->sym_advertise & (csr12 >> 16);
144	tp->lpar = csr12 >> 16;
145	tp->nwayset = 1;
146	if (negotiated & 0x0100) dev->if_port = 5;
147	else if (negotiated & 0x0080) dev->if_port = 3;
148	else if (negotiated & 0x0040) dev->if_port = 4;
149	else if (negotiated & 0x0020) dev->if_port = 0;
150	else {
151	tp->nwayset = 0;
152	if ((csr12 & 2) == 0 && (tp->sym_advertise & 0x0180))
153	dev->if_port = 3;
154	}
155	tp->full_duplex = (tulip_media_cap[dev->if_port] & MediaAlwaysFD) ? 1:0;
156
157	if (tulip_debug > 1) {
158	if (tp->nwayset)
159	printk(KERN_INFO "%s: Switching to %s based on link "
160	"negotiation %4.4x & %4.4x = %4.4x.\n",
161	dev->name, medianame[dev->if_port], tp->sym_advertise,
162	tp->lpar, negotiated);
163	else
164	printk(KERN_INFO "%s: Autonegotiation failed, using %s,"
165	" link beat status %4.4x.\n",
166	dev->name, medianame[dev->if_port], csr12);
167	}
168
169	if (tp->mtable) {
170	int i;
171	for (i = 0; i < tp->mtable->leafcount; i++)
172	if (tp->mtable->mleaf[i].media == dev->if_port) {
32b5bfab	173	int startup = ! ((tp->chip_id == DC21143 && (tp->revision == 48 \|\| tp->revision == 65)));
1da177e4 LT	174	tp->cur_index = i;
	175	tulip_select_media(dev, startup);
	176	setup_done = 1;
	177	break;
	178	}
	179	}
	180	if ( ! setup_done) {
	181	tp->csr6 = (dev->if_port & 1 ? 0x838E0000 : 0x82420000) \| (tp->csr6 & 0x20ff);
	182	if (tp->full_duplex)
	183	tp->csr6 \|= 0x0200;
	184	iowrite32(1, ioaddr + CSR13);
	185	}
	186	#if 0 /* Restart shouldn't be needed. */
	187	iowrite32(tp->csr6 \| RxOn, ioaddr + CSR6);
	188	if (tulip_debug > 2)
	189	printk(KERN_DEBUG "%s: Restarting Tx and Rx, CSR5 is %8.8x.\n",
	190	dev->name, ioread32(ioaddr + CSR5));
	191	#endif
	192	tulip_start_rxtx(tp);
	193	if (tulip_debug > 2)
	194	printk(KERN_DEBUG "%s: Setting CSR6 %8.8x/%x CSR12 %8.8x.\n",
	195	dev->name, tp->csr6, ioread32(ioaddr + CSR6),
	196	ioread32(ioaddr + CSR12));
	197	} else if ((tp->nwayset && (csr5 & 0x08000000)
	198	&& (dev->if_port == 3 \|\| dev->if_port == 5)
	199	&& (csr12 & 2) == 2) \|\|
	200	(tp->nway && (csr5 & (TPLnkFail)))) {
	201	/* Link blew? Maybe restart NWay. */
	202	del_timer_sync(&tp->timer);
	203	t21142_start_nway(dev);
	204	tp->timer.expires = RUN_AT(3*HZ);
	205	add_timer(&tp->timer);
	206	} else if (dev->if_port == 3 \|\| dev->if_port == 5) {
	207	if (tulip_debug > 1)
	208	printk(KERN_INFO"%s: 21143 %s link beat %s.\n",
	209	dev->name, medianame[dev->if_port],
	210	(csr12 & 2) ? "failed" : "good");
	211	if ((csr12 & 2) && ! tp->medialock) {
	212	del_timer_sync(&tp->timer);
	213	t21142_start_nway(dev);
	214	tp->timer.expires = RUN_AT(3*HZ);
	215	add_timer(&tp->timer);
	216	} else if (dev->if_port == 5)
	217	iowrite32(ioread32(ioaddr + CSR14) & ~0x080, ioaddr + CSR14);
	218	} else if (dev->if_port == 0 \|\| dev->if_port == 4) {
	219	if ((csr12 & 4) == 0)
	220	printk(KERN_INFO"%s: 21143 10baseT link beat good.\n",
	221	dev->name);
	222	} else if (!(csr12 & 4)) { /* 10mbps link beat good. */
	223	if (tulip_debug)
	224	printk(KERN_INFO"%s: 21143 10mbps sensed media.\n",
	225	dev->name);
	226	dev->if_port = 0;
	227	} else if (tp->nwayset) {
	228	if (tulip_debug)
	229	printk(KERN_INFO"%s: 21143 using NWay-set %s, csr6 %8.8x.\n",
	230	dev->name, medianame[dev->if_port], tp->csr6);
	231	} else { /* 100mbps link beat good. */
	232	if (tulip_debug)
	233	printk(KERN_INFO"%s: 21143 100baseTx sensed media.\n",
	234	dev->name);
	235	dev->if_port = 3;
	236	tp->csr6 = 0x838E0000 \| (tp->csr6 & 0x20ff);
	237	iowrite32(0x0003FF7F, ioaddr + CSR14);
238	iowrite32(0x0301, ioaddr + CSR12);
239	tulip_restart_rxtx(tp);
240	}
241	}
242
243