1/*
  2	drivers/net/tulip/timer.c
  3
  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}
 11	for more information on this driver.
 12
 13	Please submit bugs to http://bugzilla.kernel.org/ .
 14*/
 15
 16
 17#include "tulip.h"
 18
 19
 20void tulip_media_task(struct work_struct *work)
 21{
 22	struct tulip_private *tp =
 23		container_of(work, struct tulip_private, media_work);
 24	struct net_device *dev = tp->dev;
 25	void __iomem *ioaddr = tp->base_addr;
 26	u32 csr12 = ioread32(ioaddr + CSR12);
 27	int next_tick = 2*HZ;
 28	unsigned long flags;
 29
 30	if (tulip_debug > 2) {
 31		netdev_dbg(dev, "Media selection tick, %s, status %08x mode %08x SIA %08x %08x %08x %08x\n",
 32			   medianame[dev->if_port],
 33			   ioread32(ioaddr + CSR5), ioread32(ioaddr + CSR6),
 34			   csr12, ioread32(ioaddr + CSR13),
 35			   ioread32(ioaddr + CSR14), ioread32(ioaddr + CSR15));
 36	}
 37	switch (tp->chip_id) {
 38	case DC21140:
 39	case DC21142:
 40	case MX98713:
 41	case COMPEX9881:
 42	case DM910X:
 43	default: {
 44		struct medialeaf *mleaf;
 45		unsigned char *p;
 46		if (tp->mtable == NULL) {	/* No EEPROM info, use generic code. */
 47			/* Not much that can be done.
 48			   Assume this a generic MII or SYM transceiver. */
 49			next_tick = 60*HZ;
 50			if (tulip_debug > 2)
 51				netdev_dbg(dev, "network media monitor CSR6 %08x CSR12 0x%02x\n",
 52					   ioread32(ioaddr + CSR6),
 53					   csr12 & 0xff);
 54			break;
 55		}
 56		mleaf = &tp->mtable->mleaf[tp->cur_index];
 57		p = mleaf->leafdata;
 58		switch (mleaf->type) {
 59		case 0: case 4: {
 60			/* Type 0 serial or 4 SYM transceiver.  Check the link beat bit. */
 61			int offset = mleaf->type == 4 ? 5 : 2;
 62			s8 bitnum = p[offset];
 63			if (p[offset+1] & 0x80) {
 64				if (tulip_debug > 1)
 65					netdev_dbg(dev, "Transceiver monitor tick CSR12=%#02x, no media sense\n",
 66						   csr12);
 67				if (mleaf->type == 4) {
 68					if (mleaf->media == 3 && (csr12 & 0x02))
 69						goto select_next_media;
 70				}
 71				break;
 72			}
 73			if (tulip_debug > 2)
 74				netdev_dbg(dev, "Transceiver monitor tick: CSR12=%#02x bit %d is %d, expecting %d\n",
 75					   csr12, (bitnum >> 1) & 7,
 76					   (csr12 & (1 << ((bitnum >> 1) & 7))) != 0,
 77					   (bitnum >= 0));
 78			/* Check that the specified bit has the proper value. */
 79			if ((bitnum < 0) !=
 80				((csr12 & (1 << ((bitnum >> 1) & 7))) != 0)) {
 81				if (tulip_debug > 2)
 82					netdev_dbg(dev, "Link beat detected for %s\n",
 83						   medianame[mleaf->media & MEDIA_MASK]);
 84				if ((p[2] & 0x61) == 0x01)	/* Bogus Znyx board. */
 85					goto actually_mii;
 86				netif_carrier_on(dev);
 87				break;
 88			}
 89			netif_carrier_off(dev);
 90			if (tp->medialock)
 91				break;
 92	  select_next_media:
 93			if (--tp->cur_index < 0) {
 94				/* We start again, but should instead look for default. */
 95				tp->cur_index = tp->mtable->leafcount - 1;
 96			}
 97			dev->if_port = tp->mtable->mleaf[tp->cur_index].media;
 98			if (tulip_media_cap[dev->if_port] & MediaIsFD)
 99				goto select_next_media; /* Skip FD entries. */
100			if (tulip_debug > 1)
101				netdev_dbg(dev, "No link beat on media %s, trying transceiver type %s\n",
102					   medianame[mleaf->media & MEDIA_MASK],
103					   medianame[tp->mtable->mleaf[tp->cur_index].media]);
104			tulip_select_media(dev, 0);
105			/* Restart the transmit process. */
106			tulip_restart_rxtx(tp);
107			next_tick = (24*HZ)/10;
108			break;
109		}
110		case 1:  case 3:		/* 21140, 21142 MII */
111		actually_mii:
112			if (tulip_check_duplex(dev) < 0) {
113				netif_carrier_off(dev);
114				next_tick = 3*HZ;
115			} else {
116				netif_carrier_on(dev);
117				next_tick = 60*HZ;
118			}
119			break;
120		case 2:					/* 21142 serial block has no link beat. */
121		default:
122			break;
123		}
124	}
125	break;
126	}
127
128
129	spin_lock_irqsave(&tp->lock, flags);
130	if (tp->timeout_recovery) {
131		tulip_tx_timeout_complete(tp, ioaddr);
132		tp->timeout_recovery = 0;
133	}
134	spin_unlock_irqrestore(&tp->lock, flags);
135
136	/* mod_timer synchronizes us with potential add_timer calls
137	 * from interrupts.
138	 */
139	mod_timer(&tp->timer, RUN_AT(next_tick));
140}
141
142
143void mxic_timer(unsigned long data)
144{
145	struct net_device *dev = (struct net_device *)data;
146	struct tulip_private *tp = netdev_priv(dev);
147	void __iomem *ioaddr = tp->base_addr;
148	int next_tick = 60*HZ;
149
150	if (tulip_debug > 3) {
151		dev_info(&dev->dev, "MXIC negotiation status %08x\n",
152			 ioread32(ioaddr + CSR12));
153	}
154	if (next_tick) {
155		mod_timer(&tp->timer, RUN_AT(next_tick));
156	}
157}
158
159
160void comet_timer(unsigned long data)
161{
162	struct net_device *dev = (struct net_device *)data;
163	struct tulip_private *tp = netdev_priv(dev);
164	int next_tick = 60*HZ;
165
166	if (tulip_debug > 1)
167		netdev_dbg(dev, "Comet link status %04x partner capability %04x\n",
168			   tulip_mdio_read(dev, tp->phys[0], 1),
169			   tulip_mdio_read(dev, tp->phys[0], 5));
170	/* mod_timer synchronizes us with potential add_timer calls
171	 * from interrupts.
172	 */
173	if (tulip_check_duplex(dev) < 0)
174		{ netif_carrier_off(dev); }
175	else
176		{ netif_carrier_on(dev); }
177	mod_timer(&tp->timer, RUN_AT(next_tick));
178}
179