[net-next-2.6.git] / drivers / net / tulip / 21142.c

/*
	drivers/net/tulip/21142.c

	Maintained by Valerie Henson <val_henson@linux.intel.com>
	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, or visit the project
	Web page at http://sourceforge.net/projects/tulip/

*/

#include <linux/pci.h>
#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
6b92801b	4	Maintained by Valerie Henson <val_henson@linux.intel.com>
1da177e4 LT	5	Copyright 2000,2001 The Linux Kernel Team
	6	Written/copyright 1994-2001 by Donald Becker.
	7
	8	This software may be used and distributed according to the terms
	9	of the GNU General Public License, incorporated herein by reference.
	10
	11	Please refer to Documentation/DocBook/tulip-user.{pdf,ps,html}
	12	for more information on this driver, or visit the project
	13	Web page at http://sourceforge.net/projects/tulip/
	14
	15	*/
	16
	17	#include <linux/pci.h>
	18	#include <linux/delay.h>
	19	#include "tulip.h"
	20
	21
	22	static u16 t21142_csr13[] = { 0x0001, 0x0009, 0x0009, 0x0000, 0x0001, };
	23	u16 t21142_csr14[] = { 0xFFFF, 0x0705, 0x0705, 0x0000, 0x7F3D, };
	24	static u16 t21142_csr15[] = { 0x0008, 0x0006, 0x000E, 0x0008, 0x0008, };
	25
	26
	27	/* Handle the 21143 uniquely: do autoselect with NWay, not the EEPROM list
	28	of available transceivers. */
c4028958	29	void t21142_media_task(struct work_struct *work)
1da177e4	30	{
c4028958 DH	31	struct tulip_private *tp =
	32	container_of(work, struct tulip_private, media_work);
	33	struct net_device *dev = tp->dev;
1da177e4 LT	34	void __iomem *ioaddr = tp->base_addr;
	35	int csr12 = ioread32(ioaddr + CSR12);
	36	int next_tick = 60*HZ;
	37	int new_csr6 = 0;
	38
	39	if (tulip_debug > 2)
	40	printk(KERN_INFO"%s: 21143 negotiation status %8.8x, %s.\n",
	41	dev->name, csr12, medianame[dev->if_port]);
	42	if (tulip_media_cap[dev->if_port] & MediaIsMII) {
	43	if (tulip_check_duplex(dev) < 0) {
	44	netif_carrier_off(dev);
	45	next_tick = 3*HZ;
	46	} else {
	47	netif_carrier_on(dev);
	48	next_tick = 60*HZ;
	49	}
	50	} else if (tp->nwayset) {
	51	/* Don't screw up a negotiated session! */
	52	if (tulip_debug > 1)
	53	printk(KERN_INFO"%s: Using NWay-set %s media, csr12 %8.8x.\n",
	54	dev->name, medianame[dev->if_port], csr12);
	55	} else if (tp->medialock) {
	56	;
	57	} else if (dev->if_port == 3) {
	58	if (csr12 & 2) { /* No 100mbps link beat, revert to 10mbps. */
	59	if (tulip_debug > 1)
	60	printk(KERN_INFO"%s: No 21143 100baseTx link beat, %8.8x, "
	61	"trying NWay.\n", dev->name, csr12);
	62	t21142_start_nway(dev);
	63	next_tick = 3*HZ;
	64	}
	65	} else if ((csr12 & 0x7000) != 0x5000) {
	66	/* Negotiation failed. Search media types. */
	67	if (tulip_debug > 1)
	68	printk(KERN_INFO"%s: 21143 negotiation failed, status %8.8x.\n",
	69	dev->name, csr12);
	70	if (!(csr12 & 4)) { /* 10mbps link beat good. */
	71	new_csr6 = 0x82420000;
	72	dev->if_port = 0;
	73	iowrite32(0, ioaddr + CSR13);
	74	iowrite32(0x0003FFFF, ioaddr + CSR14);
	75	iowrite16(t21142_csr15[dev->if_port], ioaddr + CSR15);
	76	iowrite32(t21142_csr13[dev->if_port], ioaddr + CSR13);
	77	} else {
	78	/* Select 100mbps port to check for link beat. */
	79	new_csr6 = 0x83860000;
	80	dev->if_port = 3;
	81	iowrite32(0, ioaddr + CSR13);
	82	iowrite32(0x0003FF7F, ioaddr + CSR14);
	83	iowrite16(8, ioaddr + CSR15);
	84	iowrite32(1, ioaddr + CSR13);
	85	}
	86	if (tulip_debug > 1)
	87	printk(KERN_INFO"%s: Testing new 21143 media %s.\n",
	88	dev->name, medianame[dev->if_port]);
	89	if (new_csr6 != (tp->csr6 & ~0x00D5)) {
	90	tp->csr6 &= 0x00D5;
	91	tp->csr6 \|= new_csr6;
	92	iowrite32(0x0301, ioaddr + CSR12);
	93	tulip_restart_rxtx(tp);
	94	}
	95	next_tick = 3*HZ;
	96	}
	97
98	/* mod_timer synchronizes us with potential add_timer calls
99	* from interrupts.
100	*/
101	mod_timer(&tp->timer, RUN_AT(next_tick));
102	}
103
104
105	void t21142_start_nway(struct net_device *dev)
106	{
107	struct tulip_private *tp = netdev_priv(dev);
108	void __iomem *ioaddr = tp->base_addr;
109	int csr14 = ((tp->sym_advertise & 0x0780) << 9) \|
110	((tp->sym_advertise & 0x0020) << 1) \| 0xffbf;
111
112	dev->if_port = 0;
113	tp->nway = tp->mediasense = 1;
114	tp->nwayset = tp->lpar = 0;
115	if (tulip_debug > 1)
116	printk(KERN_DEBUG "%s: Restarting 21143 autonegotiation, csr14=%8.8x.\n",
117	dev->name, csr14);
118	iowrite32(0x0001, ioaddr + CSR13);
119	udelay(100);
120	iowrite32(csr14, ioaddr + CSR14);
121	tp->csr6 = 0x82420000 \| (tp->sym_advertise & 0x0040 ? FullDuplex : 0);
122	iowrite32(tp->csr6, ioaddr + CSR6);
123	if (tp->mtable && tp->mtable->csr15dir) {
124	iowrite32(tp->mtable->csr15dir, ioaddr + CSR15);
125	iowrite32(tp->mtable->csr15val, ioaddr + CSR15);
126	} else
127	iowrite16(0x0008, ioaddr + CSR15);
128	iowrite32(0x1301, ioaddr + CSR12); /* Trigger NWAY. */
129	}
130
131
132
133	void t21142_lnk_change(struct net_device *dev, int csr5)
134	{
135	struct tulip_private *tp = netdev_priv(dev);
136	void __iomem *ioaddr = tp->base_addr;
137	int csr12 = ioread32(ioaddr + CSR12);
138
139	if (tulip_debug > 1)
140	printk(KERN_INFO"%s: 21143 link status interrupt %8.8x, CSR5 %x, "
141	"%8.8x.\n", dev->name, csr12, csr5, ioread32(ioaddr + CSR14));
142
143	/* If NWay finished and we have a negotiated partner capability. */
144	if (tp->nway && !tp->nwayset && (csr12 & 0x7000) == 0x5000) {
145	int setup_done = 0;
146	int negotiated = tp->sym_advertise & (csr12 >> 16);
147	tp->lpar = csr12 >> 16;
148	tp->nwayset = 1;
149	if (negotiated & 0x0100) dev->if_port = 5;
150	else if (negotiated & 0x0080) dev->if_port = 3;
151	else if (negotiated & 0x0040) dev->if_port = 4;
152	else if (negotiated & 0x0020) dev->if_port = 0;
153	else {
154	tp->nwayset = 0;
155	if ((csr12 & 2) == 0 && (tp->sym_advertise & 0x0180))
156	dev->if_port = 3;
157	}
158	tp->full_duplex = (tulip_media_cap[dev->if_port] & MediaAlwaysFD) ? 1:0;
159
160	if (tulip_debug > 1) {
161	if (tp->nwayset)
162	printk(KERN_INFO "%s: Switching to %s based on link "
163	"negotiation %4.4x & %4.4x = %4.4x.\n",
164	dev->name, medianame[dev->if_port], tp->sym_advertise,
165	tp->lpar, negotiated);
166	else
167	printk(KERN_INFO "%s: Autonegotiation failed, using %s,"
168	" link beat status %4.4x.\n",
169	dev->name, medianame[dev->if_port], csr12);
170	}
171
172	if (tp->mtable) {
173	int i;
174	for (i = 0; i < tp->mtable->leafcount; i++)
175	if (tp->mtable->mleaf[i].media == dev->if_port) {
32b5bfab	176	int startup = ! ((tp->chip_id == DC21143 && (tp->revision == 48 \|\| tp->revision == 65)));
1da177e4 LT	177	tp->cur_index = i;
	178	tulip_select_media(dev, startup);
	179	setup_done = 1;
	180	break;
	181	}
	182	}
	183	if ( ! setup_done) {
	184	tp->csr6 = (dev->if_port & 1 ? 0x838E0000 : 0x82420000) \| (tp->csr6 & 0x20ff);
	185	if (tp->full_duplex)
	186	tp->csr6 \|= 0x0200;
	187	iowrite32(1, ioaddr + CSR13);
	188	}
	189	#if 0 /* Restart shouldn't be needed. */
	190	iowrite32(tp->csr6 \| RxOn, ioaddr + CSR6);
	191	if (tulip_debug > 2)
	192	printk(KERN_DEBUG "%s: Restarting Tx and Rx, CSR5 is %8.8x.\n",
	193	dev->name, ioread32(ioaddr + CSR5));
	194	#endif
	195	tulip_start_rxtx(tp);
	196	if (tulip_debug > 2)
	197	printk(KERN_DEBUG "%s: Setting CSR6 %8.8x/%x CSR12 %8.8x.\n",
	198	dev->name, tp->csr6, ioread32(ioaddr + CSR6),
	199	ioread32(ioaddr + CSR12));
	200	} else if ((tp->nwayset && (csr5 & 0x08000000)
	201	&& (dev->if_port == 3 \|\| dev->if_port == 5)
	202	&& (csr12 & 2) == 2) \|\|
	203	(tp->nway && (csr5 & (TPLnkFail)))) {
	204	/* Link blew? Maybe restart NWay. */
	205	del_timer_sync(&tp->timer);
	206	t21142_start_nway(dev);
	207	tp->timer.expires = RUN_AT(3*HZ);
	208	add_timer(&tp->timer);
	209	} else if (dev->if_port == 3 \|\| dev->if_port == 5) {
	210	if (tulip_debug > 1)
	211	printk(KERN_INFO"%s: 21143 %s link beat %s.\n",
	212	dev->name, medianame[dev->if_port],
	213	(csr12 & 2) ? "failed" : "good");
	214	if ((csr12 & 2) && ! tp->medialock) {
	215	del_timer_sync(&tp->timer);
	216	t21142_start_nway(dev);
	217	tp->timer.expires = RUN_AT(3*HZ);
	218	add_timer(&tp->timer);
	219	} else if (dev->if_port == 5)
	220	iowrite32(ioread32(ioaddr + CSR14) & ~0x080, ioaddr + CSR14);
	221	} else if (dev->if_port == 0 \|\| dev->if_port == 4) {
	222	if ((csr12 & 4) == 0)
	223	printk(KERN_INFO"%s: 21143 10baseT link beat good.\n",
	224	dev->name);
	225	} else if (!(csr12 & 4)) { /* 10mbps link beat good. */
	226	if (tulip_debug)
	227	printk(KERN_INFO"%s: 21143 10mbps sensed media.\n",
	228	dev->name);
	229	dev->if_port = 0;
	230	} else if (tp->nwayset) {
	231	if (tulip_debug)
	232	printk(KERN_INFO"%s: 21143 using NWay-set %s, csr6 %8.8x.\n",
	233	dev->name, medianame[dev->if_port], tp->csr6);
	234	} else { /* 100mbps link beat good. */
	235	if (tulip_debug)
	236	printk(KERN_INFO"%s: 21143 100baseTx sensed media.\n",
	237	dev->name);
	238	dev->if_port = 3;
	239	tp->csr6 = 0x838E0000 \| (tp->csr6 & 0x20ff);
	240	iowrite32(0x0003FF7F, ioaddr + CSR14);
241	iowrite32(0x0301, ioaddr + CSR12);
242	tulip_restart_rxtx(tp);
243	}
244	}
245
246