../linux/src/drivers/net/sis900.c

Bug Summary

File:	obj-scan-build/../linux/src/drivers/net/sis900.c
Location:	line 1087, column 2
Description:	Value stored to 'status' is never read

Annotated Source Code

1	/* sis900.c: A SiS 900/7016 PCI Fast Ethernet driver for Linux.
2	Copyright 1999 Silicon Integrated System Corporation
3	Revision: 1.06.11 Apr. 30 2002
4
5	Modified from the driver which is originally written by Donald Becker.
6
7	This software may be used and distributed according to the terms
8	of the GNU Public License (GPL), incorporated herein by reference.
9	Drivers based on this skeleton fall under the GPL and must retain
10	the authorship (implicit copyright) notice.
11
12	References:
13	SiS 7016 Fast Ethernet PCI Bus 10/100 Mbps LAN Controller with OnNow Support,
14	preliminary Rev. 1.0 Jan. 14, 1998
15	SiS 900 Fast Ethernet PCI Bus 10/100 Mbps LAN Single Chip with OnNow Support,
16	preliminary Rev. 1.0 Nov. 10, 1998
17	SiS 7014 Single Chip 100BASE-TX/10BASE-T Physical Layer Solution,
18	preliminary Rev. 1.0 Jan. 18, 1998
19	http://www.sis.com.tw/support/databook.htm
20
21	Rev 1.06.11 Apr. 25 2002 Mufasa Yang (mufasa@sis.com.tw) added SiS962 support
22	Rev 1.06.10 Dec. 18 2001 Hui-Fen Hsu workaround for EDB & RTL8201 PHY
23	Rev 1.06.09 Sep. 28 2001 Hui-Fen Hsu update for 630ET & workaround for ICS1893 PHY
24	Rev 1.06.08 Mar. 2 2001 Hui-Fen Hsu (hfhsu@sis.com.tw) some bug fix & 635M/B support
25	Rev 1.06.07 Jan. 8 2001 Lei-Chun Chang added RTL8201 PHY support
26	Rev 1.06.06 Sep. 6 2000 Lei-Chun Chang added ICS1893 PHY support
27	Rev 1.06.05 Aug. 22 2000 Lei-Chun Chang (lcchang@sis.com.tw) modified 630E equalier workaroung rule
28	Rev 1.06.03 Dec. 23 1999 Ollie Lho Third release
29	Rev 1.06.02 Nov. 23 1999 Ollie Lho bug in mac probing fixed
30	Rev 1.06.01 Nov. 16 1999 Ollie Lho CRC calculation provide by Joseph Zbiciak (im14u2c@primenet.com)
31	Rev 1.06 Nov. 4 1999 Ollie Lho (ollie@sis.com.tw) Second release
32	Rev 1.05.05 Oct. 29 1999 Ollie Lho (ollie@sis.com.tw) Single buffer Tx/Rx
33	Chin-Shan Li (lcs@sis.com.tw) Added AMD Am79c901 HomePNA PHY support
34	Rev 1.05 Aug. 7 1999 Jim Huang (cmhuang@sis.com.tw) Initial release
35	*/
36
37	#include <linux/module.h>
38	#include <linux/version.h>
39	#include <linux/kernel.h>
40	#include <linux/sched.h>
41	#include <linux/string.h>
42	#include <linux/timer.h>
43	#include <linux/errno.h>
44	#include <linux/ioport.h>
45	#include <linux/malloc.h>
46	#include <linux/interrupt.h>
47	#include <linux/pci.h>
48	#include <linux/netdevice.h>
49	#include <linux/bios32.h>
50	#include <linux/compatmac.h>
51
52	#include <linux/etherdevice.h>
53	#include <linux/skbuff.h>
54	#include <asm/processor.h> /* Processor type for cache alignment. */
55	#include <asm/bitops.h>
56	#include <asm/io.h>
57	#include <linux/delay.h>
58	#include <asm/types.h>
59	#include "sis900.h"
60
61
62	#if LINUX_VERSION_CODE131108 < 0x20159
63	#define dev_free_skb(skb)dev_kfree_skb (skb, 0); dev_kfree_skb (skb, FREE_WRITE0);
64	#else /* Grrr, incompatible changes should change the name. */
65	#define dev_free_skb(skb)dev_kfree_skb (skb, 0); dev_kfree_skb(skb);
66	#endif
67
68	static const char *version =
69	"sis900.c: modified v1.06.11 4/30/2002";
70
71	static int max_interrupt_work = 20;
72	static int multicast_filter_limit = 128;
73
74	#define sis900_debugdebug debug
75	static int sis900_debugdebug = 0;
76
77	/* Time in jiffies before concluding the transmitter is hung. */
78	#define TX_TIMEOUT(4100) (4HZ100)
79
80	enum pci_flags_bit {
81	PCI_USES_IO=1, PCI_USES_MEM=2, PCI_USES_MASTER=4,
82	PCI_ADDR0=0x10<<0, PCI_ADDR1=0x10<<1, PCI_ADDR2=0x10<<2, PCI_ADDR3=0x10<<3,
83	};
84
85	struct mac_chip_info {
86	const char *name;
87	u16 vendor_id, device_id, flags;
88	int io_size;
89	struct devicelinux_device (probe) (struct mac_chip_info *mac, long ioaddr, int irq,
90	int pci_index, unsigned char pci_device_fn, unsigned char pci_bus, struct devicelinux_device * net_dev);
91	};
92	static struct devicelinux_device * sis900_mac_probe (struct mac_chip_info * mac, long ioaddr, int irq,
93	int pci_index, unsigned char pci_device_fn,
94	unsigned char pci_bus, struct devicelinux_device * net_dev);
95	static struct mac_chip_info mac_chip_table[] = {
96	{ "SiS 900 PCI Fast Ethernet", PCI_VENDOR_ID_SI0x1039, PCI_DEVICE_ID_SI_9000x900,
97	PCI_COMMAND_IO0x1\|PCI_COMMAND_MASTER0x4, SIS900_TOTAL_SIZE0x100, sis900_mac_probe},
98	{ "SiS 7016 PCI Fast Ethernet",PCI_VENDOR_ID_SI0x1039, PCI_DEVICE_ID_SI_70160x7016,
99	PCI_COMMAND_IO0x1\|PCI_COMMAND_MASTER0x4, SIS900_TOTAL_SIZE0x100, sis900_mac_probe},
100	{0,}, /* 0 terminatted list. */
101	};
102
103	static void sis900_read_mode(struct devicelinux_device net_dev, int speed, int *duplex);
104
105	static struct mii_chip_info {
106	const char * name;
107	u16 phy_id0;
108	u16 phy_id1;
109	u8 phy_types;
110	#define HOME0x0001 0x0001
111	#define LAN0x0002 0x0002
112	#define MIX0x0003 0x0003
113	} mii_chip_table[] = {
114	{ "SiS 900 Internal MII PHY", 0x001d, 0x8000, LAN0x0002 },
115	{ "SiS 7014 Physical Layer Solution", 0x0016, 0xf830, LAN0x0002 },
116	{ "AMD 79C901 10BASE-T PHY", 0x0000, 0x6B70, LAN0x0002 },
117	{ "AMD 79C901 HomePNA PHY", 0x0000, 0x6B90, HOME0x0001},
118	{ "ICS LAN PHY", 0x0015, 0xF440, LAN0x0002 },
119	{ "NS 83851 PHY", 0x2000, 0x5C20, MIX0x0003 },
120	{ "Realtek RTL8201 PHY", 0x0000, 0x8200, LAN0x0002 },
121	{0,},
122	};
123
124	struct mii_phy {
125	struct mii_phy * next;
126	int phy_addr;
127	u16 phy_id0;
128	u16 phy_id1;
129	u16 status;
130	u8 phy_types;
131	};
132
133	typedef struct _BufferDesc {
134	u32 link;
135	u32 cmdsts;
136	u32 bufptr;
137	} BufferDesc;
138
139	struct sis900_private {
140	struct devicelinux_device *next_module;
141	struct enet_statistics stats;
142
143	/* struct pci_dev * pci_dev;*/
144	unsigned char pci_bus;
145	unsigned char pci_device_fn;
146	int pci_index;
147
148	struct mac_chip_info * mac;
149	struct mii_phy * mii;
150	struct mii_phy * first_mii; /* record the first mii structure */
151	unsigned int cur_phy;
152
153	struct timer_list timer; /* Link status detection timer. */
154	u8 autong_complete; /* 1: auto-negotiate complete */
155
156	unsigned int cur_rx, dirty_rx; /* producer/comsumer pointers for Tx/Rx ring */
157	unsigned int cur_tx, dirty_tx;
158
159	/* The saved address of a sent/receive-in-place packet buffer */
160	struct sk_buff *tx_skbuff[NUM_TX_DESC16];
161	struct sk_buff *rx_skbuff[NUM_RX_DESC16];
162	BufferDesc tx_ring[NUM_TX_DESC16];
163	BufferDesc rx_ring[NUM_RX_DESC16];
164
165	unsigned int tx_full; /* The Tx queue is full. */
166	int LinkOn;
167	};
168
169	#ifdef MODULE
170	#if LINUX_VERSION_CODE131108 > 0x20115
171	MODULE_AUTHOR("Jim Huang <cmhuang@sis.com.tw>, Ollie Lho <ollie@sis.com.tw>");
172	MODULE_DESCRIPTION("SiS 900 PCI Fast Ethernet driver");
173	MODULE_PARM(multicast_filter_limit, "i");
174	MODULE_PARM(max_interrupt_work, "i");
175	MODULE_PARM(debug, "i");
176	#endif
177	#endif
178
179	static int sis900_open(struct devicelinux_device *net_dev);
180	static int sis900_mii_probe (unsigned char pci_bus, unsigned char pci_device_fn, struct devicelinux_device * net_dev);
181	static void sis900_init_rxfilter (struct devicelinux_device * net_dev);
182	static u16 read_eeprom(long ioaddr, int location);
183	static u16 mdio_read(struct devicelinux_device *net_dev, int phy_id, int location);
184	static void mdio_write(struct devicelinux_device *net_dev, int phy_id, int location, int val);
185	static void sis900_timer(unsigned long data);
186	static void sis900_check_mode (struct devicelinux_device net_dev, struct mii_phy mii_phy);
187	static void sis900_tx_timeout(struct devicelinux_device *net_dev);
188	static void sis900_init_tx_ring(struct devicelinux_device *net_dev);
189	static void sis900_init_rx_ring(struct devicelinux_device *net_dev);
190	static int sis900_start_xmit(struct sk_buff skb, struct devicelinux_device net_dev);
191	static int sis900_rx(struct devicelinux_device *net_dev);
192	static void sis900_finish_xmit (struct devicelinux_device *net_dev);
193	static void sis900_interrupt(int irq, void dev_instance, struct pt_regs regs);
194	static int sis900_close(struct devicelinux_device *net_dev);
195	static int mii_ioctl(struct devicelinux_device net_dev, struct ifreq rq, int cmd);
196	static struct enet_statistics sis900_get_stats(struct devicelinux_device net_dev);
197	static u16 sis900_compute_hashtable_index(u8 *addr, u8 revision);
198	static void set_rx_mode(struct devicelinux_device *net_dev);
199	static void sis900_reset(struct devicelinux_device *net_dev);
200	static void sis630_set_eq(struct devicelinux_device *net_dev, u8 revision);
201	static u16 sis900_default_phy(struct devicelinux_device * net_dev);
202	static void sis900_set_capability( struct devicelinux_device net_dev ,struct mii_phy phy);
203	static u16 sis900_reset_phy(struct devicelinux_device *net_dev, int phy_addr);
204	static void sis900_auto_negotiate(struct devicelinux_device *net_dev, int phy_addr);
205	static void sis900_set_mode (long ioaddr, int speed, int duplex);
206
207	/* A list of all installed SiS900 devices, for removing the driver module. */
208	static struct devicelinux_device root_sis900_dev = NULL((void ) 0);
209
210	#ifdef HAVE_DEVLIST
211	struct netdev_entry netcard_drv =
212	{"sis900", sis900_probe, SIS900_TOTAL_SIZE0x100, NULL((void *) 0)};
213	#endif
214
215	/* walk through every ethernet PCI devices to see if some of them are matched with our card list*/
216	int sis900_probe (struct devicelinux_device * net_dev)
217	{
218	int found = 0;
219	int pci_index = 0;
220	unsigned char pci_bus, pci_device_fn;
221	long ioaddr;
222	int irq;
223
224	if (!pcibios_present())
225	return -ENODEV19;
226
227	for (; pci_index < 0xff; pci_index++)
228	{
229	u16 vendor, devicelinux_device, pci_command;
230	struct mac_chip_info *mac;
231
232	if (pcibios_find_class (PCI_CLASS_NETWORK_ETHERNET0x0200 << 8, pci_index,
233	&pci_bus, &pci_device_fn) != PCIBIOS_SUCCESSFUL0x00)
234	break;
235
236	pcibios_read_config_word(pci_bus, pci_device_fn, PCI_VENDOR_ID0x00, &vendor);
237	pcibios_read_config_word(pci_bus, pci_device_fn, PCI_DEVICE_ID0x02, &devicelinux_device);
238
239	for (mac = mac_chip_table; mac->vendor_id; mac++)
240	{
241	if (vendor == mac->vendor_id && devicelinux_device == mac->device_id) break;
242	}
243
244	/* pci_dev does not match any of our cards */
245	if (mac->vendor_id == 0)
246	continue;
247
248	{
249	u32 pci_ioaddr;
250	u8 pci_irq_line;
251
252	pcibios_read_config_byte(pci_bus, pci_device_fn,
253	PCI_INTERRUPT_LINE0x3c, &pci_irq_line);
254	pcibios_read_config_dword(pci_bus, pci_device_fn,
255	PCI_BASE_ADDRESS_00x10, &pci_ioaddr);
256	ioaddr = pci_ioaddr & ~3;
257	irq = pci_irq_line;
258
259	if ((mac->flags & PCI_USES_IO) &&
260	check_region (pci_ioaddr, mac->io_size))
261	continue;
262
263	pcibios_read_config_word(pci_bus, pci_device_fn,
264	PCI_COMMAND0x04, &pci_command);
265
266	{
267	u8 lat;
268
269	pcibios_read_config_byte(pci_bus, pci_device_fn, PCI_LATENCY_TIMER0x0d, &lat);
270	if (lat < 16) {
271	printk("PCI: Increasing latency timer of device %02x:%02x to 64\n",
272	pci_bus, pci_device_fn);
273	pcibios_write_config_byte(pci_bus, pci_device_fn, PCI_LATENCY_TIMER0x0d, 64);
274	}
275	}
276	net_dev = mac->probe (mac, ioaddr, irq, pci_index, pci_device_fn, pci_bus, net_dev);
277	if (net_dev != NULL((void *) 0))
278	{
279	found++;
280	}
281	net_dev = NULL((void *) 0);
282	}
283	}
284	return found ? 0 : -ENODEV19;
285
286	}
287
288	/* older SiS900 and friends, use EEPROM to store MAC address */
289	static int
290	sis900_get_mac_addr(long ioaddr, struct devicelinux_device *net_dev)
291	{
292	u16 signature;
293	int i;
294
295	/* check to see if we have sane EEPROM */
296	signature = (u16) read_eeprom(ioaddr, EEPROMSignature);
297	if (signature == 0xffff \|\| signature == 0x0000) {
298	printk (KERN_INFO"<6>" "%s: Error EERPOM read %x\n",
299	net_dev->name, signature);
300	return 0;
301	}
302
303	/* get MAC address from EEPROM */
304	for (i = 0; i < 3; i++)
305	((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);
306	return 1;
307	}
308
309	/* SiS630E model, use APC CMOS RAM to store MAC address */
310	static int sis630e_get_mac_addr(long ioaddr, int pci_index, struct devicelinux_device *net_dev)
311	{
312	u8 reg;
313	int i;
314	u8 pci_bus, pci_dfn;
315	int not_found;
316
317	not_found = pcibios_find_device(0x1039, 0x0008,
318	pci_index,
319	&pci_bus,
320	&pci_dfn);
321	if (not_found) {
322	printk("%s: Can not find ISA bridge\n", net_dev->name);
323	return 0;
324	}
325	pcibios_read_config_byte(pci_bus, pci_dfn, 0x48, &reg);
326	pcibios_write_config_byte(pci_bus, pci_dfn, 0x48, reg \| 0x40);
327
328	for (i = 0; i < 6; i++) {
329	outb(0x09 + i, 0x70)((__builtin_constant_p((0x70)) && (0x70) < 256) ? __outbc ((0x09 + i),(0x70)) : __outb((0x09 + i),(0x70)));
330	((u8 *)(net_dev->dev_addr))[i] = inb(0x71)((__builtin_constant_p((0x71)) && (0x71) < 256) ? __inbc (0x71) : __inb(0x71));
331	}
332	pcibios_write_config_byte(pci_bus, pci_dfn, 0x48, reg & ~0x40);
333
334	return 1;
335	}
336
337	/* 635 model : set Mac reload bit and get mac address from rfdr */
338	static int sis635_get_mac_addr(struct devicelinux_device *net_dev)
339	{
340	long ioaddr = net_dev->base_addr;
341	u32 rfcrSave;
342	u32 i;
343
344	rfcrSave = inl(rfcr + ioaddr)((__builtin_constant_p((rfcr + ioaddr)) && (rfcr + ioaddr ) < 256) ? __inlc(rfcr + ioaddr) : __inl(rfcr + ioaddr));
345
346	outl(rfcrSave \| RELOAD, ioaddr + cr)((__builtin_constant_p((ioaddr + cr)) && (ioaddr + cr ) < 256) ? __outlc((rfcrSave \| RELOAD),(ioaddr + cr)) : __outl ((rfcrSave \| RELOAD),(ioaddr + cr)));
347	outl(0, ioaddr + cr)((__builtin_constant_p((ioaddr + cr)) && (ioaddr + cr ) < 256) ? __outlc((0),(ioaddr + cr)) : __outl((0),(ioaddr + cr)));
348
349	/* disable packet filtering before setting filter */
350	outl(rfcrSave & ~RFEN, rfcr + ioaddr)((__builtin_constant_p((rfcr + ioaddr)) && (rfcr + ioaddr ) < 256) ? __outlc((rfcrSave & ~RFEN),(rfcr + ioaddr)) : __outl((rfcrSave & ~RFEN),(rfcr + ioaddr)));
351
352	/* load MAC addr to filter data register */
353	for (i = 0 ; i < 3 ; i++) {
354	outl((i << RFADDR_shift), ioaddr + rfcr)((__builtin_constant_p((ioaddr + rfcr)) && (ioaddr + rfcr ) < 256) ? __outlc(((i << 16)),(ioaddr + rfcr)) : __outl (((i << 16)),(ioaddr + rfcr)));
355	( ((u16 )net_dev->dev_addr) + i) = inw(ioaddr + rfdr)((__builtin_constant_p((ioaddr + rfdr)) && (ioaddr + rfdr ) < 256) ? __inwc(ioaddr + rfdr) : __inw(ioaddr + rfdr));
356	}
357
358	/* enable packet filitering */
359	outl(rfcrSave \| RFEN, rfcr + ioaddr)((__builtin_constant_p((rfcr + ioaddr)) && (rfcr + ioaddr ) < 256) ? __outlc((rfcrSave \| RFEN),(rfcr + ioaddr)) : __outl ((rfcrSave \| RFEN),(rfcr + ioaddr)));
360
361	return 1;
362	}
363
364
365	/**
366	* sis962_get_mac_addr: - Get MAC address for SiS962 model
367	* @pci_dev: the sis900 pci device
368	* @net_dev: the net device to get address for
369	*
370	* SiS962 model, use EEPROM to store MAC address. And EEPROM is shared by
371	* LAN and 1394. When access EEPROM, send EEREQ signal to hardware first
372	* and wait for EEGNT. If EEGNT is ON, EEPROM is permitted to be access
373	* by LAN, otherwise is not. After MAC address is read from EEPROM, send
374	* EEDONE signal to refuse EEPROM access by LAN.
375	* MAC address is read into @net_dev->dev_addr.
376	*/
377
378	static int sis962_get_mac_addr(struct devicelinux_device *net_dev)
379	{
380	long ioaddr = net_dev->base_addr;
381	long ee_addr = ioaddr + mear;
382	u32 waittime = 0;
383	int i;
384
385	outl(EEREQ, ee_addr)((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __outlc((EEREQ),(ee_addr)) : __outl((EEREQ),(ee_addr)));
386	while(waittime < 2000) {
387	if(inl(ee_addr)((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __inlc(ee_addr) : __inl(ee_addr)) & EEGNT) {
388	/* get MAC address from EEPROM */
389	for (i = 0; i < 3; i++)
390	((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);
391	outl(EEDONE, ee_addr)((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __outlc((EEDONE),(ee_addr)) : __outl((EEDONE),(ee_addr)));
392	return 1;
393	} else {
394	udelay(1)(__builtin_constant_p(1) ? __const_udelay((1) * 0x10c6ul) : __udelay (1));
395	waittime ++;
396	}
397	}
398	outl(EEDONE, ee_addr)((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __outlc((EEDONE),(ee_addr)) : __outl((EEDONE),(ee_addr)));
399	return 0;
400	}
401
402	struct devicelinux_device *
403	sis900_mac_probe (struct mac_chip_info *mac, long ioaddr, int irq, int pci_index,
404	unsigned char pci_device_fn, unsigned char pci_bus, struct devicelinux_device * net_dev)
405	{
406	struct sis900_private *sis_priv;
407	static int did_version = 0;
408
409	u8 revision;
410	int i, ret = 0;
411
412	if (did_version++ == 0)
413	printk(KERN_INFO"<6>" "%s\n", version);
414
415	if ((net_dev = init_etherdev(net_dev, 0)) == NULL((void *) 0))
416	return NULL((void *) 0);
417
418	if ((net_dev->priv = kmalloclinux_kmalloc(sizeof(struct sis900_private), GFP_KERNEL0x03)) == NULL((void *) 0)) {
419	unregister_netdev(net_dev);
420	return NULL((void *) 0);
421	}
422
423	sis_priv = net_dev->priv;
424	memset(sis_priv, 0, sizeof(struct sis900_private))(__builtin_constant_p(0) ? (__builtin_constant_p((sizeof(struct sis900_private))) ? __constant_c_and_count_memset(((sis_priv )),((0x01010101UL(unsigned char)(0))),((sizeof(struct sis900_private )))) : __constant_c_memset(((sis_priv)),((0x01010101UL(unsigned char)(0))),((sizeof(struct sis900_private))))) : (__builtin_constant_p ((sizeof(struct sis900_private))) ? __memset_generic((((sis_priv ))),(((0))),(((sizeof(struct sis900_private))))) : __memset_generic (((sis_priv)),((0)),((sizeof(struct sis900_private))))));
425
426	/* We do a request_region() to register /proc/ioports info. */
427	request_region(ioaddr, mac->io_size, net_dev->name);
428	net_dev->base_addr = ioaddr;
429	net_dev->irq = irq;
430
431	sis_priv->mac = mac;
432	sis_priv->pci_bus = pci_bus;
433	sis_priv->pci_device_fn = pci_device_fn;
434	sis_priv->pci_index = pci_index;
435
436	pcibios_read_config_byte(pci_bus, pci_device_fn, PCI_CLASS_REVISION0x08, &revision);
437
438	if ( revision == SIS630E_900_REV )
439	ret = sis630e_get_mac_addr(ioaddr, pci_index, net_dev);
440	else if ((revision > 0x81) && (revision <= 0x90))
441	ret = sis635_get_mac_addr(net_dev);
442	else if (revision == SIS962_900_REV)
443	ret = sis962_get_mac_addr(net_dev);
444	else
445	ret = sis900_get_mac_addr(ioaddr, net_dev);
446
447	if (ret == 0) {
448	unregister_netdev(net_dev);
449	return NULL((void *) 0);
450	}
451
452	/* print some information about our NIC */
453	printk(KERN_INFO"<6>" "%s: %s at %#lx, IRQ %d, ", net_dev->name, mac->name,
454	ioaddr, irq);
455	for (i = 0; i < 5; i++)
456	printk("%2.2x:", (u8)net_dev->dev_addr[i]);
457	printk("%2.2x.\n", net_dev->dev_addr[i]);
458
459	/* 630ET : set the mii access mode as software-mode */
460	if (revision == SIS630ET_900_REV)
461	outl(ACCESSMODE \| inl(ioaddr + cr), ioaddr + cr)((__builtin_constant_p((ioaddr + cr)) && (ioaddr + cr ) < 256) ? __outlc((ACCESSMODE \| ((__builtin_constant_p((ioaddr + cr)) && (ioaddr + cr) < 256) ? __inlc(ioaddr + cr ) : __inl(ioaddr + cr))),(ioaddr + cr)) : __outl((ACCESSMODE \| ((__builtin_constant_p((ioaddr + cr)) && (ioaddr + cr ) < 256) ? __inlc(ioaddr + cr) : __inl(ioaddr + cr))),(ioaddr + cr)));
462
463	/* probe for mii transceiver */
464	if (sis900_mii_probe(pci_bus, pci_device_fn, net_dev) == 0) {
465	unregister_netdev(net_dev);
466	kfreelinux_kfree(sis_priv);
467	release_region(ioaddr, mac->io_size);
468	return NULL((void *) 0);
469	}
470
471	sis_priv->next_module = root_sis900_dev;
472	root_sis900_dev = net_dev;
473
474	/* The SiS900-specific entries in the device structure. */
475	net_dev->open = &sis900_open;
476	net_dev->hard_start_xmit = &sis900_start_xmit;
477	net_dev->stop = &sis900_close;
478	net_dev->get_stats = &sis900_get_stats;
479	net_dev->set_multicast_list = &set_rx_mode;
480	net_dev->do_ioctl = &mii_ioctl;
481
482	return net_dev;
483	}
484
485	/* sis900_mii_probe: - Probe MII PHY for sis900 */
486	static int sis900_mii_probe (unsigned char pci_bus, unsigned char pci_device_fn, struct devicelinux_device * net_dev)
487	{
488	struct sis900_private * sis_priv = (struct sis900_private *)net_dev->priv;
489	u16 poll_bit = MII_STAT_LINK, status = 0;
490	unsigned int timeout = jiffies + 5 * HZ100;
491	int phy_addr;
492	u8 revision;
493
494	sis_priv->mii = NULL((void *) 0);
495
496	/* search for total of 32 possible mii phy addresses */
497	for (phy_addr = 0; phy_addr < 32; phy_addr++) {
498	struct mii_phy * mii_phy = NULL((void *) 0);
499	u16 mii_status;
500	int i;
501
502	for(i=0; i<2; i++)
503	mii_status = mdio_read(net_dev, phy_addr, MII_STATUS);
504
505	if (mii_status == 0xffff \|\| mii_status == 0x0000)
506	/* the mii is not accessable, try next one */
507	continue;
508
509	if ((mii_phy = kmalloclinux_kmalloc(sizeof(struct mii_phy), GFP_KERNEL0x03)) == NULL((void *) 0)) {
510	printk(KERN_INFO"<6>" "Cannot allocate mem for struct mii_phy\n");
511	return 0;
512	}
513
514	mii_phy->phy_id0 = mdio_read(net_dev, phy_addr, MII_PHY_ID0);
515	mii_phy->phy_id1 = mdio_read(net_dev, phy_addr, MII_PHY_ID1);
516	mii_phy->phy_addr = phy_addr;
517	mii_phy->status = mii_status;
518	mii_phy->next = sis_priv->mii;
519	sis_priv->mii = mii_phy;
520	sis_priv->first_mii = mii_phy;
521
522	for (i=0; mii_chip_table[i].phy_id1; i++)
523	if ( ( mii_phy->phy_id0 == mii_chip_table[i].phy_id0 ) &&
524	( (mii_phy->phy_id1 & 0xFFF0) == mii_chip_table[i].phy_id1 )){
525
526	mii_phy->phy_types = mii_chip_table[i].phy_types;
527	if(mii_chip_table[i].phy_types == MIX0x0003)
528	mii_phy->phy_types =
529	(mii_status & (MII_STAT_CAN_TX_FDX \| MII_STAT_CAN_TX))?LAN0x0002:HOME0x0001;
530	printk(KERN_INFO"<6>" "%s: %s transceiver found at address %d.\n",
531	net_dev->name, mii_chip_table[i].name, phy_addr);
532	break;
533	}
534
535	if( !mii_chip_table[i].phy_id1 )
536	printk(KERN_INFO"<6>" "%s: Unknown PHY transceiver found at address %d.\n",
537	net_dev->name, phy_addr);
538	}
539
540	if (sis_priv->mii == NULL((void *) 0)) {
541	printk(KERN_INFO"<6>" "%s: No MII transceivers found!\n",
542	net_dev->name);
543	return 0;
544	}
545
546	/* Slect Default PHY to put in sis_priv->mii & sis_priv->cur_phy */
547	sis_priv->mii = NULL((void *) 0);
548	sis900_default_phy( net_dev );
549
550	/* Reset PHY if default PHY is internal sis900 */
551	if( (sis_priv->mii->phy_id0 == 0x001D) &&
552	( (sis_priv->mii->phy_id1&0xFFF0) == 0x8000) )
553	status = sis900_reset_phy( net_dev, sis_priv->cur_phy );
554
555	/* workaround for ICS1893 PHY */
556	if ((sis_priv->mii->phy_id0 == 0x0015) &&
557	((sis_priv->mii->phy_id1&0xFFF0) == 0xF440))
558	mdio_write(net_dev, sis_priv->cur_phy, 0x0018, 0xD200);
559
560	if( status & MII_STAT_LINK ){
561	while (poll_bit)
562	{
563	poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS) & poll_bit);
564	if (jiffies >= timeout)
565	{
566	printk(KERN_WARNING"<4>" "%s: reset phy and link down now\n", net_dev->name);
567	return -ETIME62;
568	}
569	}
570	}
571
572	pcibios_read_config_byte(pci_bus, pci_device_fn, PCI_CLASS_REVISION0x08, &revision);
573	if (revision == SIS630E_900_REV) {
574	/* SiS 630E has some bugs on default value of PHY registers */
575	mdio_write(net_dev, sis_priv->cur_phy, MII_ANADV, 0x05e1);
576	mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG1, 0x22);
577	mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG2, 0xff00);
578	mdio_write(net_dev, sis_priv->cur_phy, MII_MASK, 0xffc0);
579	//mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, 0x1000);
580	}
581
582	if (sis_priv->mii->status & MII_STAT_LINK)
583	sis_priv->LinkOn = TRUE1;
584	else
585	sis_priv->LinkOn = FALSE0;
586
587	return 1;
588	}
589
590
591	/* sis900_default_phy : Select one default PHY for sis900 mac */
592	static u16 sis900_default_phy(struct devicelinux_device * net_dev)
593	{
594	struct sis900_private * sis_priv = (struct sis900_private *)net_dev->priv;
595	struct mii_phy phy = NULL((void ) 0), phy_home = NULL((void ) 0), default_phy = NULL((void ) 0);
596	u16 status;
597
598	for( phy=sis_priv->first_mii; phy; phy=phy->next ){
599	status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
600	status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
601
602	/* Link ON & Not select deafalut PHY */
603	if ( (status & MII_STAT_LINK) && !(default_phy) )
604	default_phy = phy;
605	else{
606	status = mdio_read(net_dev, phy->phy_addr, MII_CONTROL);
607	mdio_write(net_dev, phy->phy_addr, MII_CONTROL,
608	status \| MII_CNTL_AUTO \| MII_CNTL_ISOLATE);
609	if( phy->phy_types == HOME0x0001 )
610	phy_home = phy;
611	}
612	}
613
614	if( (!default_phy) && phy_home )
615	default_phy = phy_home;
616	else if(!default_phy)
617	default_phy = sis_priv->first_mii;
618
619	if( sis_priv->mii != default_phy ){
620	sis_priv->mii = default_phy;
621	sis_priv->cur_phy = default_phy->phy_addr;
622	printk(KERN_INFO"<6>" "%s: Using transceiver found at address %d as default\n", net_dev->name,sis_priv->cur_phy);
623	}
624
625	status = mdio_read(net_dev, sis_priv->cur_phy, MII_CONTROL);
626	status &= (~MII_CNTL_ISOLATE);
627
628	mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, status);
629	status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
630	status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
631
632	return status;
633	}
634
635
636	/* sis900_set_capability : set the media capability of network adapter */
637	static void sis900_set_capability( struct devicelinux_device net_dev , struct mii_phy phy )
638	{
639	u16 cap;
640	u16 status;
641
642	status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
643	status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
644
645	cap = MII_NWAY_CSMA_CD \|
646	((phy->status & MII_STAT_CAN_TX_FDX)? MII_NWAY_TX_FDX:0) \|
647	((phy->status & MII_STAT_CAN_TX) ? MII_NWAY_TX:0) \|
648	((phy->status & MII_STAT_CAN_T_FDX) ? MII_NWAY_T_FDX:0)\|
649	((phy->status & MII_STAT_CAN_T) ? MII_NWAY_T:0);
650
651	mdio_write( net_dev, phy->phy_addr, MII_ANADV, cap );
652	}
653
654
655	/* Delay between EEPROM clock transitions. */
656	#define eeprom_delay()((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __inlc(ee_addr) : __inl(ee_addr)) inl(ee_addr)((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __inlc(ee_addr) : __inl(ee_addr))
657
658	/* Read Serial EEPROM through EEPROM Access Register, Note that location is
659	in word (16 bits) unit */
660	static u16 read_eeprom(long ioaddr, int location)
661	{
662	int i;
663	u16 retval = 0;
664	long ee_addr = ioaddr + mear;
665	u32 read_cmd = location \| EEread;
666
667	outl(0, ee_addr)((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __outlc((0),(ee_addr)) : __outl((0),(ee_addr)));
668	eeprom_delay()((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __inlc(ee_addr) : __inl(ee_addr));
669	outl(EECS, ee_addr)((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __outlc((EECS),(ee_addr)) : __outl((EECS),(ee_addr)));
670	eeprom_delay()((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __inlc(ee_addr) : __inl(ee_addr));
671
672	/* Shift the read command (9) bits out. */
673	for (i = 8; i >= 0; i--) {
674	u32 dataval = (read_cmd & (1 << i)) ? EEDI \| EECS : EECS;
675	outl(dataval, ee_addr)((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __outlc((dataval),(ee_addr)) : __outl((dataval),(ee_addr) ));
676	eeprom_delay()((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __inlc(ee_addr) : __inl(ee_addr));
677	outl(dataval \| EECLK, ee_addr)((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __outlc((dataval \| EECLK),(ee_addr)) : __outl((dataval \| EECLK ),(ee_addr)));
678	eeprom_delay()((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __inlc(ee_addr) : __inl(ee_addr));
679	}
680	outb(EECS, ee_addr)((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __outbc((EECS),(ee_addr)) : __outb((EECS),(ee_addr)));
681	eeprom_delay()((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __inlc(ee_addr) : __inl(ee_addr));
682
683	/* read the 16-bits data in */
684	for (i = 16; i > 0; i--) {
685	outl(EECS, ee_addr)((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __outlc((EECS),(ee_addr)) : __outl((EECS),(ee_addr)));
686	eeprom_delay()((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __inlc(ee_addr) : __inl(ee_addr));
687	outl(EECS \| EECLK, ee_addr)((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __outlc((EECS \| EECLK),(ee_addr)) : __outl((EECS \| EECLK) ,(ee_addr)));
688	eeprom_delay()((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __inlc(ee_addr) : __inl(ee_addr));
689	retval = (retval << 1) \| ((inl(ee_addr)((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __inlc(ee_addr) : __inl(ee_addr)) & EEDO) ? 1 : 0);
690	eeprom_delay()((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __inlc(ee_addr) : __inl(ee_addr));
691	}
692
693	/* Terminate the EEPROM access. */
694	outl(0, ee_addr)((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __outlc((0),(ee_addr)) : __outl((0),(ee_addr)));
695	eeprom_delay()((__builtin_constant_p((ee_addr)) && (ee_addr) < 256 ) ? __inlc(ee_addr) : __inl(ee_addr));
696	// outl(EECLK, ee_addr);
697
698	return (retval);
699	}
700
701	/* Read and write the MII management registers using software-generated
702	serial MDIO protocol. Note that the command bits and data bits are
703	send out seperately */
704	#define mdio_delay()((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __inlc(mdio_addr) : __inl(mdio_addr)) inl(mdio_addr)((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __inlc(mdio_addr) : __inl(mdio_addr))
705
706	static void mdio_idle(long mdio_addr)
707	{
708	outl(MDIO \| MDDIR, mdio_addr)((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __outlc((MDIO \| MDDIR),(mdio_addr)) : __outl((MDIO \| MDDIR ),(mdio_addr)));
709	mdio_delay()((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __inlc(mdio_addr) : __inl(mdio_addr));
710	outl(MDIO \| MDDIR \| MDC, mdio_addr)((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __outlc((MDIO \| MDDIR \| MDC),(mdio_addr)) : __outl((MDIO \| MDDIR \| MDC),(mdio_addr)));
711	}
712
713	/* Syncronize the MII management interface by shifting 32 one bits out. */
714	static void mdio_reset(long mdio_addr)
715	{
716	int i;
717
718	for (i = 31; i >= 0; i--) {
719	outl(MDDIR \| MDIO, mdio_addr)((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __outlc((MDDIR \| MDIO),(mdio_addr)) : __outl((MDDIR \| MDIO),(mdio_addr)));
720	mdio_delay()((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __inlc(mdio_addr) : __inl(mdio_addr));
721	outl(MDDIR \| MDIO \| MDC, mdio_addr)((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __outlc((MDDIR \| MDIO \| MDC),(mdio_addr)) : __outl((MDDIR \| MDIO \| MDC),(mdio_addr)));
722	mdio_delay()((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __inlc(mdio_addr) : __inl(mdio_addr));
723	}
724	return;
725	}
726
727	static u16 mdio_read(struct devicelinux_device *net_dev, int phy_id, int location)
728	{
729	long mdio_addr = net_dev->base_addr + mear;
730	int mii_cmd = MIIread0x6000\|(phy_id<<MIIpmdShift7)\|(location<<MIIregShift2);
731	u16 retval = 0;
732	int i;
733
734	mdio_reset(mdio_addr);
735	mdio_idle(mdio_addr);
736
737	for (i = 15; i >= 0; i--) {
738	int dataval = (mii_cmd & (1 << i)) ? MDDIR \| MDIO : MDDIR;
739	outl(dataval, mdio_addr)((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __outlc((dataval),(mdio_addr)) : __outl((dataval),(mdio_addr )));
740	mdio_delay()((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __inlc(mdio_addr) : __inl(mdio_addr));
741	outl(dataval \| MDC, mdio_addr)((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __outlc((dataval \| MDC),(mdio_addr)) : __outl((dataval \| MDC),(mdio_addr)));
742	mdio_delay()((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __inlc(mdio_addr) : __inl(mdio_addr));
743	}
744
745	/* Read the 16 data bits. */
746	for (i = 16; i > 0; i--) {
747	outl(0, mdio_addr)((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __outlc((0),(mdio_addr)) : __outl((0),(mdio_addr)));
748	mdio_delay()((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __inlc(mdio_addr) : __inl(mdio_addr));
749	retval = (retval << 1) \| ((inl(mdio_addr)((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __inlc(mdio_addr) : __inl(mdio_addr)) & MDIO) ? 1 : 0);
750	outl(MDC, mdio_addr)((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __outlc((MDC),(mdio_addr)) : __outl((MDC),(mdio_addr) ));
751	mdio_delay()((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __inlc(mdio_addr) : __inl(mdio_addr));
752	}
753	outl(0x00, mdio_addr)((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __outlc((0x00),(mdio_addr)) : __outl((0x00),(mdio_addr )));
754
755	return retval;
756	}
757
758	static void mdio_write(struct devicelinux_device *net_dev, int phy_id, int location, int value)
759	{
760	long mdio_addr = net_dev->base_addr + mear;
761	int mii_cmd = MIIwrite0x5002\|(phy_id<<MIIpmdShift7)\|(location<<MIIregShift2);
762	int i;
763
764	mdio_reset(mdio_addr);
765	mdio_idle(mdio_addr);
766
767	/* Shift the command bits out. */
768	for (i = 15; i >= 0; i--) {
769	int dataval = (mii_cmd & (1 << i)) ? MDDIR \| MDIO : MDDIR;
770	outb(dataval, mdio_addr)((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __outbc((dataval),(mdio_addr)) : __outb((dataval),(mdio_addr )));
771	mdio_delay()((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __inlc(mdio_addr) : __inl(mdio_addr));
772	outb(dataval \| MDC, mdio_addr)((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __outbc((dataval \| MDC),(mdio_addr)) : __outb((dataval \| MDC),(mdio_addr)));
773	mdio_delay()((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __inlc(mdio_addr) : __inl(mdio_addr));
774	}
775	mdio_delay()((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __inlc(mdio_addr) : __inl(mdio_addr));
776
777	/* Shift the value bits out. */
778	for (i = 15; i >= 0; i--) {
779	int dataval = (value & (1 << i)) ? MDDIR \| MDIO : MDDIR;
780	outl(dataval, mdio_addr)((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __outlc((dataval),(mdio_addr)) : __outl((dataval),(mdio_addr )));
781	mdio_delay()((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __inlc(mdio_addr) : __inl(mdio_addr));
782	outl(dataval \| MDC, mdio_addr)((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __outlc((dataval \| MDC),(mdio_addr)) : __outl((dataval \| MDC),(mdio_addr)));
783	mdio_delay()((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __inlc(mdio_addr) : __inl(mdio_addr));
784	}
785	mdio_delay()((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __inlc(mdio_addr) : __inl(mdio_addr));
786
787	/* Clear out extra bits. */
788	for (i = 2; i > 0; i--) {
789	outb(0, mdio_addr)((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __outbc((0),(mdio_addr)) : __outb((0),(mdio_addr)));
790	mdio_delay()((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __inlc(mdio_addr) : __inl(mdio_addr));
791	outb(MDC, mdio_addr)((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __outbc((MDC),(mdio_addr)) : __outb((MDC),(mdio_addr) ));
792	mdio_delay()((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __inlc(mdio_addr) : __inl(mdio_addr));
793	}
794	outl(0x00, mdio_addr)((__builtin_constant_p((mdio_addr)) && (mdio_addr) < 256) ? __outlc((0x00),(mdio_addr)) : __outl((0x00),(mdio_addr )));
795
796	return;
797	}
798
799	static u16 sis900_reset_phy(struct devicelinux_device *net_dev, int phy_addr)
800	{
801	int i = 0;
802	u16 status;
803
804	while (i++ < 2)
805	status = mdio_read(net_dev, phy_addr, MII_STATUS);
806
807	mdio_write( net_dev, phy_addr, MII_CONTROL, MII_CNTL_RESET );
808
809	return status;
810	}
811
812	static int
813	sis900_open(struct devicelinux_device *net_dev)
814	{
815	struct sis900_private sis_priv = (struct sis900_private )net_dev->priv;
816	long ioaddr = net_dev->base_addr;
817	u8 revision;
818
819	/* Soft reset the chip. */
820	sis900_reset(net_dev);
821
822	/* Equalizer workaroung Rule */
823	pcibios_read_config_byte(sis_priv->pci_bus, sis_priv->pci_device_fn, PCI_CLASS_REVISION0x08, &revision);
824	sis630_set_eq(net_dev, revision);
825
826	if (request_irq(net_dev->irq, &sis900_interrupt, SA_SHIRQ0x04000000, net_dev->name, net_dev)) {
827	return -EAGAIN11;
828	}
829
830	MOD_INC_USE_COUNTdo { } while (0);
831
832	sis900_init_rxfilter(net_dev);
833
834	sis900_init_tx_ring(net_dev);
835	sis900_init_rx_ring(net_dev);
836
837	set_rx_mode(net_dev);
838
839	net_dev->tbusy = 0;
840	net_dev->interrupt = 0;
841	net_dev->start = 1;
842
843	/* Workaround for EDB */
844	sis900_set_mode(ioaddr, HW_SPEED_10_MBPS10, FDX_CAPABLE_HALF_SELECTED1);
845
846	/* Enable all known interrupts by setting the interrupt mask. */
847	outl((RxSOVR\|RxORN\|RxERR\|RxOK\|TxURN\|TxERR\|TxIDLE), ioaddr + imr)((__builtin_constant_p((ioaddr + imr)) && (ioaddr + imr ) < 256) ? __outlc(((RxSOVR\|RxORN\|RxERR\|RxOK\|TxURN\|TxERR\|TxIDLE )),(ioaddr + imr)) : __outl(((RxSOVR\|RxORN\|RxERR\|RxOK\|TxURN\|TxERR \|TxIDLE)),(ioaddr + imr)));
848	outl(RxENA \| inl(ioaddr + cr), ioaddr + cr)((__builtin_constant_p((ioaddr + cr)) && (ioaddr + cr ) < 256) ? __outlc((RxENA \| ((__builtin_constant_p((ioaddr + cr)) && (ioaddr + cr) < 256) ? __inlc(ioaddr + cr ) : __inl(ioaddr + cr))),(ioaddr + cr)) : __outl((RxENA \| ((__builtin_constant_p ((ioaddr + cr)) && (ioaddr + cr) < 256) ? __inlc(ioaddr + cr) : __inl(ioaddr + cr))),(ioaddr + cr)));
849	outl(IE, ioaddr + ier)((__builtin_constant_p((ioaddr + ier)) && (ioaddr + ier ) < 256) ? __outlc((IE),(ioaddr + ier)) : __outl((IE),(ioaddr + ier)));
850
851	sis900_check_mode(net_dev, sis_priv->mii);
852
853	/* Set the timer to switch to check for link beat and perhaps switch
854	to an alternate media type. */
855	init_timer(&sis_priv->timer);
856	sis_priv->timer.expires = jiffies + HZ100;
857	sis_priv->timer.data = (unsigned long)net_dev;
858	sis_priv->timer.function = &sis900_timer;
859	add_timer(&sis_priv->timer);
860
861	return 0;
862	}
863
864	/* set receive filter address to our MAC address */
865	static void
866	sis900_init_rxfilter (struct devicelinux_device * net_dev)
867	{
868	long ioaddr = net_dev->base_addr;
869	u32 rfcrSave;
870	u32 i;
871
872	rfcrSave = inl(rfcr + ioaddr)((__builtin_constant_p((rfcr + ioaddr)) && (rfcr + ioaddr ) < 256) ? __inlc(rfcr + ioaddr) : __inl(rfcr + ioaddr));
873
874	/* disable packet filtering before setting filter */
875	outl(rfcrSave & ~RFEN, rfcr + ioaddr)((__builtin_constant_p((rfcr + ioaddr)) && (rfcr + ioaddr ) < 256) ? __outlc((rfcrSave & ~RFEN),(rfcr + ioaddr)) : __outl((rfcrSave & ~RFEN),(rfcr + ioaddr)));
876
877	/* load MAC addr to filter data register */
878	for (i = 0 ; i < 3 ; i++) {
879	u32 w;
880
881	w = (u32) ((u16 )(net_dev->dev_addr)+i);
882	outl((i << RFADDR_shift), ioaddr + rfcr)((__builtin_constant_p((ioaddr + rfcr)) && (ioaddr + rfcr ) < 256) ? __outlc(((i << 16)),(ioaddr + rfcr)) : __outl (((i << 16)),(ioaddr + rfcr)));
883	outl(w, ioaddr + rfdr)((__builtin_constant_p((ioaddr + rfdr)) && (ioaddr + rfdr ) < 256) ? __outlc((w),(ioaddr + rfdr)) : __outl((w),(ioaddr + rfdr)));
884
885	if (sis900_debugdebug > 2) {
886	printk(KERN_INFO"<6>" "%s: Receive Filter Addrss[%d]=%x\n",
887	net_dev->name, i, inl(ioaddr + rfdr)((__builtin_constant_p((ioaddr + rfdr)) && (ioaddr + rfdr ) < 256) ? __inlc(ioaddr + rfdr) : __inl(ioaddr + rfdr)));
888	}
889	}
890
891	/* enable packet filitering */
892	outl(rfcrSave \| RFEN, rfcr + ioaddr)((__builtin_constant_p((rfcr + ioaddr)) && (rfcr + ioaddr ) < 256) ? __outlc((rfcrSave \| RFEN),(rfcr + ioaddr)) : __outl ((rfcrSave \| RFEN),(rfcr + ioaddr)));
893	}
894
895	/* Initialize the Tx ring. */
896	static void
897	sis900_init_tx_ring(struct devicelinux_device *net_dev)
898	{
899	struct sis900_private sis_priv = (struct sis900_private )net_dev->priv;
900	long ioaddr = net_dev->base_addr;
901	int i;
902
903	sis_priv->tx_full = 0;
904	sis_priv->dirty_tx = sis_priv->cur_tx = 0;
905
906	for (i = 0; i < NUM_TX_DESC16; i++) {
907	sis_priv->tx_skbuff[i] = NULL((void *) 0);
908
909	sis_priv->tx_ring[i].link = (u32) virt_to_busvirt_to_phys(&sis_priv->tx_ring[i+1]);
910	sis_priv->tx_ring[i].cmdsts = 0;
911	sis_priv->tx_ring[i].bufptr = 0;
912	}
913	sis_priv->tx_ring[i-1].link = (u32) virt_to_busvirt_to_phys(&sis_priv->tx_ring[0]);
914
915	/* load Transmit Descriptor Register */
916	outl(virt_to_bus(&sis_priv->tx_ring[0]), ioaddr + txdp)((__builtin_constant_p((ioaddr + txdp)) && (ioaddr + txdp ) < 256) ? __outlc((virt_to_phys(&sis_priv->tx_ring [0])),(ioaddr + txdp)) : __outl((virt_to_phys(&sis_priv-> tx_ring[0])),(ioaddr + txdp)));
917	if (sis900_debugdebug > 2)
918	printk(KERN_INFO"<6>" "%s: TX descriptor register loaded with: %8.8x\n",
919	net_dev->name, inl(ioaddr + txdp)((__builtin_constant_p((ioaddr + txdp)) && (ioaddr + txdp ) < 256) ? __inlc(ioaddr + txdp) : __inl(ioaddr + txdp)));
920	}
921
922	/* Initialize the Rx descriptor ring, pre-allocate recevie buffers */
923	static void
924	sis900_init_rx_ring(struct devicelinux_device *net_dev)
925	{
926	struct sis900_private sis_priv = (struct sis900_private )net_dev->priv;
927	long ioaddr = net_dev->base_addr;
928	int i;
929
930	sis_priv->cur_rx = 0;
931	sis_priv->dirty_rx = 0;
932
933	/* init RX descriptor */
934	for (i = 0; i < NUM_RX_DESC16; i++) {
935	sis_priv->rx_skbuff[i] = NULL((void *) 0);
936
937	sis_priv->rx_ring[i].link = (u32) virt_to_busvirt_to_phys(&sis_priv->rx_ring[i+1]);
938	sis_priv->rx_ring[i].cmdsts = 0;
939	sis_priv->rx_ring[i].bufptr = 0;
940	}
941	sis_priv->rx_ring[i-1].link = (u32) virt_to_busvirt_to_phys(&sis_priv->rx_ring[0]);
942
943	/* allocate sock buffers */
944	for (i = 0; i < NUM_RX_DESC16; i++) {
945	struct sk_buff *skb;
946
947	if ((skb = dev_alloc_skb(RX_BUF_SIZE1536)) == NULL((void *) 0)) {
948	/* not enough memory for skbuff, this makes a "hole"
949	on the buffer ring, it is not clear how the
950	hardware will react to this kind of degenerated
951	buffer */
952	break;
953	}
954	skb->dev = net_dev;
955	sis_priv->rx_skbuff[i] = skb;
956	sis_priv->rx_ring[i].cmdsts = RX_BUF_SIZE1536;
957	sis_priv->rx_ring[i].bufptr = virt_to_busvirt_to_phys(skb->tail);
958	}
959	sis_priv->dirty_rx = (unsigned int) (i - NUM_RX_DESC16);
960
961	/* load Receive Descriptor Register */
962	outl(virt_to_bus(&sis_priv->rx_ring[0]), ioaddr + rxdp)((__builtin_constant_p((ioaddr + rxdp)) && (ioaddr + rxdp ) < 256) ? __outlc((virt_to_phys(&sis_priv->rx_ring [0])),(ioaddr + rxdp)) : __outl((virt_to_phys(&sis_priv-> rx_ring[0])),(ioaddr + rxdp)));
963	if (sis900_debugdebug > 2)
964	printk(KERN_INFO"<6>" "%s: RX descriptor register loaded with: %8.8x\n",
965	net_dev->name, inl(ioaddr + rxdp)((__builtin_constant_p((ioaddr + rxdp)) && (ioaddr + rxdp ) < 256) ? __inlc(ioaddr + rxdp) : __inl(ioaddr + rxdp)));
966	}
967
968	/**
969	* sis630_set_eq: - set phy equalizer value for 630 LAN
970	* @net_dev: the net device to set equalizer value
971	* @revision: 630 LAN revision number
972	*
973	* 630E equalizer workaround rule(Cyrus Huang 08/15)
974	* PHY register 14h(Test)
975	* Bit 14: 0 -- Automatically dectect (default)
976	* 1 -- Manually set Equalizer filter
977	* Bit 13: 0 -- (Default)
978	* 1 -- Speed up convergence of equalizer setting
979	* Bit 9 : 0 -- (Default)
980	* 1 -- Disable Baseline Wander
981	* Bit 3~7 -- Equalizer filter setting
982	* Link ON: Set Bit 9, 13 to 1, Bit 14 to 0
983	* Then calculate equalizer value
984	* Then set equalizer value, and set Bit 14 to 1, Bit 9 to 0
985	* Link Off:Set Bit 13 to 1, Bit 14 to 0
986	* Calculate Equalizer value:
987	* When Link is ON and Bit 14 is 0, SIS900PHY will auto-dectect proper equalizer value.
988	* When the equalizer is stable, this value is not a fixed value. It will be within
989	* a small range(eg. 7~9). Then we get a minimum and a maximum value(eg. min=7, max=9)
990	* 0 <= max <= 4 --> set equalizer to max
991	* 5 <= max <= 14 --> set equalizer to max+1 or set equalizer to max+2 if max == min
992	* max >= 15 --> set equalizer to max+5 or set equalizer to max+6 if max == min
993	*/
994
995	static void sis630_set_eq(struct devicelinux_device *net_dev, u8 revision)
996	{
997	struct sis900_private sis_priv = (struct sis900_private )net_dev->priv;
998	u16 reg14h, eq_value, max_value=0, min_value=0;
999	u8 host_bridge_rev;
1000	int i, maxcount=10;
1001	int not_found;
1002	u8 pci_bus, pci_device_fn;
1003
1004	if ( !(revision == SIS630E_900_REV \|\| revision == SIS630EA1_900_REV \|\|
1005	revision == SIS630A_900_REV \|\| revision == SIS630ET_900_REV) )
1006	return;
1007	not_found = pcibios_find_device(SIS630_VENDOR_ID0x1039, SIS630_DEVICE_ID0x0630,
1008	sis_priv->pci_index,
1009	&pci_bus,
1010	&pci_device_fn);
1011	if (not_found)
1012	pcibios_read_config_byte(pci_bus, pci_device_fn, PCI_CLASS_REVISION0x08, &host_bridge_rev);
1013
1014	if (sis_priv->LinkOn) {
1015	reg14h=mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1016	mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, (0x2200 \| reg14h) & 0xBFFF);
1017	for (i=0; i < maxcount; i++) {
1018	eq_value=(0x00F8 & mdio_read(net_dev, sis_priv->cur_phy, MII_RESV)) >> 3;
1019	if (i == 0)
1020	max_value=min_value=eq_value;
1021	max_value=(eq_value > max_value) ? eq_value : max_value;
1022	min_value=(eq_value < min_value) ? eq_value : min_value;
1023	}
1024	/* 630E rule to determine the equalizer value */
1025	if (revision == SIS630E_900_REV \|\| revision == SIS630EA1_900_REV \|\|
1026	revision == SIS630ET_900_REV) {
1027	if (max_value < 5)
1028	eq_value=max_value;
1029	else if (max_value >= 5 && max_value < 15)
1030	eq_value=(max_value == min_value) ? max_value+2 : max_value+1;
1031	else if (max_value >= 15)
1032	eq_value=(max_value == min_value) ? max_value+6 : max_value+5;
1033	}
1034	/* 630B0&B1 rule to determine the equalizer value */
1035	if (revision == SIS630A_900_REV &&
1036	(host_bridge_rev == SIS630B0 \|\| host_bridge_rev == SIS630B1)) {
1037	if (max_value == 0)
1038	eq_value=3;
1039	else
1040	eq_value=(max_value+min_value+1)/2;
1041	}
1042	/* write equalizer value and setting */
1043	reg14h=mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1044	reg14h=(reg14h & 0xFF07) \| ((eq_value << 3) & 0x00F8);
1045	reg14h=(reg14h \| 0x6000) & 0xFDFF;
1046	mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, reg14h);
1047	}
1048	else {
1049	reg14h=mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1050	if (revision == SIS630A_900_REV &&
1051	(host_bridge_rev == SIS630B0 \|\| host_bridge_rev == SIS630B1))
1052	mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, (reg14h \| 0x2200) & 0xBFFF);
1053	else
1054	mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, (reg14h \| 0x2000) & 0xBFFF);
1055	}
1056	return;
1057	}
1058
1059
1060	/* on each timer ticks we check two things, Link Status (ON/OFF) and
1061	Link Mode (10/100/Full/Half)
1062	*/
1063	static void sis900_timer(unsigned long data)
1064	{
1065	struct devicelinux_device net_dev = (struct devicelinux_device )data;
1066	struct sis900_private sis_priv = (struct sis900_private )net_dev->priv;
1067	struct mii_phy *mii_phy = sis_priv->mii;
1068	static int next_tick = 5*HZ100;
1069	u16 status;
1070	u8 revision;
1071
1072	if(!sis_priv->autong_complete){
1073	int speed, duplex = 0;
1074
1075	sis900_read_mode(net_dev, &speed, &duplex);
1076	if(duplex){
1077	sis900_set_mode(net_dev->base_addr, speed, duplex);
1078	pcibios_read_config_byte(sis_priv->pci_bus, sis_priv->pci_device_fn, PCI_CLASS_REVISION0x08, &revision);
1079	sis630_set_eq(net_dev, revision);
1080	}
1081
1082	sis_priv->timer.expires = jiffies + HZ100;
1083	add_timer(&sis_priv->timer);
1084	return;
1085	}
1086
1087	status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
	Value stored to 'status' is never read
1088	status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1089
1090	/* Link OFF -> ON */
1091	if ( !sis_priv->LinkOn ) {
1092	LookForLink:
1093	/* Search for new PHY */
1094	status = sis900_default_phy( net_dev );
1095	mii_phy = sis_priv->mii;
1096
1097	if( status & MII_STAT_LINK ){
1098	sis900_check_mode(net_dev, mii_phy);
1099	sis_priv->LinkOn = TRUE1;
1100	}
1101	}
1102	/* Link ON -> OFF */
1103	else{
1104	if( !(status & MII_STAT_LINK) ){
1105	sis_priv->LinkOn = FALSE0;
1106	printk(KERN_INFO"<6>" "%s: Media Link Off\n", net_dev->name);
1107
1108	/* Change mode issue */
1109	if( (mii_phy->phy_id0 == 0x001D) &&
1110	( (mii_phy->phy_id1 & 0xFFF0) == 0x8000 ))
1111	sis900_reset_phy( net_dev, sis_priv->cur_phy );
1112
1113	pcibios_read_config_byte(sis_priv->pci_bus, sis_priv->pci_device_fn, PCI_CLASS_REVISION0x08, &revision);
1114	sis630_set_eq(net_dev, revision);
1115
1116	goto LookForLink;
1117	}
1118	}
1119
1120	sis_priv->timer.expires = jiffies + next_tick;
1121	add_timer(&sis_priv->timer);
1122	}
1123
1124	static void sis900_check_mode (struct devicelinux_device net_dev, struct mii_phy mii_phy)
1125	{
1126	struct sis900_private sis_priv = (struct sis900_private )net_dev->priv;
1127	long ioaddr = net_dev->base_addr;
1128	int speed, duplex;
1129
1130	if( mii_phy->phy_types == LAN0x0002 ){
1131	outl( ~EXD & inl( ioaddr + cfg ), ioaddr + cfg)((__builtin_constant_p((ioaddr + cfg)) && (ioaddr + cfg ) < 256) ? __outlc((~EXD & ((__builtin_constant_p((ioaddr + cfg)) && (ioaddr + cfg) < 256) ? __inlc(ioaddr + cfg) : __inl(ioaddr + cfg))),(ioaddr + cfg)) : __outl((~EXD & ((__builtin_constant_p((ioaddr + cfg)) && (ioaddr + cfg ) < 256) ? __inlc(ioaddr + cfg) : __inl(ioaddr + cfg))),(ioaddr + cfg)));
1132	sis900_set_capability(net_dev , mii_phy);
1133	sis900_auto_negotiate(net_dev, sis_priv->cur_phy);
1134	}else{
1135	outl(EXD \| inl( ioaddr + cfg ), ioaddr + cfg)((__builtin_constant_p((ioaddr + cfg)) && (ioaddr + cfg ) < 256) ? __outlc((EXD \| ((__builtin_constant_p((ioaddr + cfg)) && (ioaddr + cfg) < 256) ? __inlc(ioaddr + cfg ) : __inl(ioaddr + cfg))),(ioaddr + cfg)) : __outl((EXD \| ((__builtin_constant_p ((ioaddr + cfg)) && (ioaddr + cfg) < 256) ? __inlc (ioaddr + cfg) : __inl(ioaddr + cfg))),(ioaddr + cfg)));
1136	speed = HW_SPEED_HOME1;
1137	duplex = FDX_CAPABLE_HALF_SELECTED1;
1138	sis900_set_mode(net_dev->base_addr, speed, duplex);
1139	sis_priv->autong_complete = 1;
1140	}
1141	}
1142
1143	static void sis900_set_mode (long ioaddr, int speed, int duplex)
1144	{
1145	u32 tx_flags = 0, rx_flags = 0;
1146
1147	if( inl(ioaddr + cfg)((__builtin_constant_p((ioaddr + cfg)) && (ioaddr + cfg ) < 256) ? __inlc(ioaddr + cfg) : __inl(ioaddr + cfg)) & EDB_MASTER_EN ){
1148	tx_flags = TxATP \| (DMA_BURST_64 << TxMXDMA_shift20) \| (TX_FILL_THRESH16 << TxFILLT_shift8);
1149	rx_flags = DMA_BURST_64 << RxMXDMA_shift20;
1150	}
1151	else{
1152	tx_flags = TxATP \| (DMA_BURST_512 << TxMXDMA_shift20) \| (TX_FILL_THRESH16 << TxFILLT_shift8);
1153	rx_flags = DMA_BURST_512 << RxMXDMA_shift20;
1154	}
1155
1156	if (speed == HW_SPEED_HOME1 \|\| speed == HW_SPEED_10_MBPS10 ) {
1157	rx_flags \|= (RxDRNT_1024 << RxDRNT_shift1);
1158	tx_flags \|= (TxDRNT_1016 << TxDRNT_shift0);
1159	}
1160	else {
1161	rx_flags \|= (RxDRNT_10016 << RxDRNT_shift1);
1162	tx_flags \|= (TxDRNT_10048 << TxDRNT_shift0);
1163	}
1164
1165	if (duplex == FDX_CAPABLE_FULL_SELECTED2) {
1166	tx_flags \|= (TxCSI \| TxHBI);
1167	rx_flags \|= RxATX;
1168	}
1169
1170	outl (tx_flags, ioaddr + txcfg)((__builtin_constant_p((ioaddr + txcfg)) && (ioaddr + txcfg) < 256) ? __outlc((tx_flags),(ioaddr + txcfg)) : __outl ((tx_flags),(ioaddr + txcfg)));
1171	outl (rx_flags, ioaddr + rxcfg)((__builtin_constant_p((ioaddr + rxcfg)) && (ioaddr + rxcfg) < 256) ? __outlc((rx_flags),(ioaddr + rxcfg)) : __outl ((rx_flags),(ioaddr + rxcfg)));
1172	}
1173
1174
1175	static void sis900_auto_negotiate(struct devicelinux_device *net_dev, int phy_addr)
1176	{
1177	struct sis900_private sis_priv = (struct sis900_private )net_dev->priv;
1178	int i = 0;
1179	u32 status;
1180
1181	while (i++ < 2)
1182	status = mdio_read(net_dev, phy_addr, MII_STATUS);
1183
1184	if (!(status & MII_STAT_LINK)){
1185	printk(KERN_INFO"<6>" "%s: Media Link Off\n", net_dev->name);
1186	sis_priv->autong_complete = 1;
1187	sis_priv->LinkOn = FALSE0;
1188	return;
1189	}
1190
1191	/* (Re)start AutoNegotiate */
1192	mdio_write(net_dev, phy_addr, MII_CONTROL,
1193	MII_CNTL_AUTO \| MII_CNTL_RST_AUTO);
1194	sis_priv->autong_complete = 0;
1195	}
1196
1197
1198	static void sis900_read_mode(struct devicelinux_device net_dev, int speed, int *duplex)
1199	{
1200	struct sis900_private sis_priv = (struct sis900_private )net_dev->priv;
1201	struct mii_phy *phy = sis_priv->mii;
1202	int phy_addr = sis_priv->cur_phy;
1203	u32 status;
1204	u16 autoadv, autorec;
1205	int i = 0;
1206
1207	while (i++ < 2)
1208	status = mdio_read(net_dev, phy_addr, MII_STATUS);
1209
1210	if (!(status & MII_STAT_LINK)) return;
1211
1212	/* AutoNegotiate completed */
1213	autoadv = mdio_read(net_dev, phy_addr, MII_ANADV);
1214	autorec = mdio_read(net_dev, phy_addr, MII_ANLPAR);
1215	status = autoadv & autorec;
1216
1217	*speed = HW_SPEED_10_MBPS10;
1218	*duplex = FDX_CAPABLE_HALF_SELECTED1;
1219
1220	if (status & (MII_NWAY_TX \| MII_NWAY_TX_FDX))
1221	*speed = HW_SPEED_100_MBPS100;
1222	if (status & ( MII_NWAY_TX_FDX \| MII_NWAY_T_FDX))
1223	*duplex = FDX_CAPABLE_FULL_SELECTED2;
1224
1225	sis_priv->autong_complete = 1;
1226
1227	/* Workaround for Realtek RTL8201 PHY issue */
1228	if((phy->phy_id0 == 0x0000) && ((phy->phy_id1 & 0xFFF0) == 0x8200)){
1229	if(mdio_read(net_dev, phy_addr, MII_CONTROL) & MII_CNTL_FDX)
1230	*duplex = FDX_CAPABLE_FULL_SELECTED2;
1231	if(mdio_read(net_dev, phy_addr, 0x0019) & 0x01)
1232	*speed = HW_SPEED_100_MBPS100;
1233	}
1234
1235	printk(KERN_INFO"<6>" "%s: Media Link On %s %s-duplex \n",
1236	net_dev->name,
1237	*speed == HW_SPEED_100_MBPS100 ?
1238	"100mbps" : "10mbps",
1239	*duplex == FDX_CAPABLE_FULL_SELECTED2 ?
1240	"full" : "half");
1241	}
1242
1243
1244	static void sis900_tx_timeout(struct devicelinux_device *net_dev)
1245	{
1246	struct sis900_private sis_priv = (struct sis900_private )net_dev->priv;
1247	long ioaddr = net_dev->base_addr;
1248	int i;
1249
1250	printk(KERN_INFO"<6>" "%s: Transmit timeout, status %8.8x %8.8x \n",
1251	net_dev->name, inl(ioaddr + cr)((__builtin_constant_p((ioaddr + cr)) && (ioaddr + cr ) < 256) ? __inlc(ioaddr + cr) : __inl(ioaddr + cr)), inl(ioaddr + isr)((__builtin_constant_p((ioaddr + isr)) && (ioaddr + isr ) < 256) ? __inlc(ioaddr + isr) : __inl(ioaddr + isr)));
1252
1253	/* Disable interrupts by clearing the interrupt mask. */
1254	outl(0x0000, ioaddr + imr)((__builtin_constant_p((ioaddr + imr)) && (ioaddr + imr ) < 256) ? __outlc((0x0000),(ioaddr + imr)) : __outl((0x0000 ),(ioaddr + imr)));
1255
1256	/* discard unsent packets, should this code section be protected by
1257	cli(), sti() ?? */
1258	sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1259	for (i = 0; i < NUM_TX_DESC16; i++) {
1260	if (sis_priv->tx_skbuff[i] != NULL((void *) 0)) {
1261	dev_free_skb(sis_priv->tx_skbuff[i])dev_kfree_skb (sis_priv->tx_skbuff[i], 0);;
1262	sis_priv->tx_skbuff[i] = 0;
1263	sis_priv->tx_ring[i].cmdsts = 0;
1264	sis_priv->tx_ring[i].bufptr = 0;
1265	sis_priv->stats.tx_dropped++;
1266	}
1267	}
1268	net_dev->trans_start = jiffies;
1269	net_dev->tbusy = sis_priv->tx_full = 0;
1270
1271	/* FIXME: Should we restart the transmission thread here ?? */
1272	outl(TxENA \| inl(ioaddr + cr), ioaddr + cr)((__builtin_constant_p((ioaddr + cr)) && (ioaddr + cr ) < 256) ? __outlc((TxENA \| ((__builtin_constant_p((ioaddr + cr)) && (ioaddr + cr) < 256) ? __inlc(ioaddr + cr ) : __inl(ioaddr + cr))),(ioaddr + cr)) : __outl((TxENA \| ((__builtin_constant_p ((ioaddr + cr)) && (ioaddr + cr) < 256) ? __inlc(ioaddr + cr) : __inl(ioaddr + cr))),(ioaddr + cr)));
1273
1274	/* Enable all known interrupts by setting the interrupt mask. */
1275	outl((RxSOVR\|RxORN\|RxERR\|RxOK\|TxURN\|TxERR\|TxIDLE), ioaddr + imr)((__builtin_constant_p((ioaddr + imr)) && (ioaddr + imr ) < 256) ? __outlc(((RxSOVR\|RxORN\|RxERR\|RxOK\|TxURN\|TxERR\|TxIDLE )),(ioaddr + imr)) : __outl(((RxSOVR\|RxORN\|RxERR\|RxOK\|TxURN\|TxERR \|TxIDLE)),(ioaddr + imr)));
1276	return;
1277	}
1278
1279	static int
1280	sis900_start_xmit(struct sk_buff skb, struct devicelinux_device net_dev)
1281	{
1282	struct sis900_private sis_priv = (struct sis900_private )net_dev->priv;
1283	long ioaddr = net_dev->base_addr;
1284	unsigned int entry;
1285
1286	/* test tbusy to see if we have timeout situation then set it */
1287	if (test_and_set_bit(0, (void*)&net_dev->tbusy) != 0) {
1288	if (jiffies - net_dev->trans_start > TX_TIMEOUT(4*100))
1289	sis900_tx_timeout(net_dev);
1290	return 1;
1291	}
1292
1293	/* Calculate the next Tx descriptor entry. */
1294	entry = sis_priv->cur_tx % NUM_TX_DESC16;
1295	sis_priv->tx_skbuff[entry] = skb;
1296
1297	/* set the transmit buffer descriptor and enable Transmit State Machine */
1298	sis_priv->tx_ring[entry].bufptr = virt_to_busvirt_to_phys(skb->data);
1299	sis_priv->tx_ring[entry].cmdsts = (OWN \| skb->len);
1300	outl(TxENA \| inl(ioaddr + cr), ioaddr + cr)((__builtin_constant_p((ioaddr + cr)) && (ioaddr + cr ) < 256) ? __outlc((TxENA \| ((__builtin_constant_p((ioaddr + cr)) && (ioaddr + cr) < 256) ? __inlc(ioaddr + cr ) : __inl(ioaddr + cr))),(ioaddr + cr)) : __outl((TxENA \| ((__builtin_constant_p ((ioaddr + cr)) && (ioaddr + cr) < 256) ? __inlc(ioaddr + cr) : __inl(ioaddr + cr))),(ioaddr + cr)));
1301
1302	if (++sis_priv->cur_tx - sis_priv->dirty_tx < NUM_TX_DESC16) {
1303	/* Typical path, clear tbusy to indicate more
1304	transmission is possible */
1305	clear_bit(0, (void*)&net_dev->tbusy);
1306	} else {
1307	/* no more transmit descriptor avaiable, tbusy remain set */
1308	sis_priv->tx_full = 1;
1309	}
1310
1311	net_dev->trans_start = jiffies;
1312
1313	{
1314	int i;
1315	for (i = 0; i < 100000; i++); /* GRUIIIIIK */
1316	}
1317
1318	if (sis900_debugdebug > 3)
1319	printk(KERN_INFO"<6>" "%s: Queued Tx packet at %p size %d "
1320	"to slot %d.\n",
1321	net_dev->name, skb->data, (int)skb->len, entry);
1322
1323	return 0;
1324	}
1325
1326	/* The interrupt handler does all of the Rx thread work and cleans up
1327	after the Tx thread. */
1328	static void sis900_interrupt(int irq, void dev_instance, struct pt_regs regs)
1329	{
1330	struct devicelinux_device net_dev = (struct devicelinux_device )dev_instance;
1331	int boguscnt = max_interrupt_work;
1332	long ioaddr = net_dev->base_addr;
1333	u32 status;
1334
1335	#if defined(__i386__1)
1336	/* A lock to prevent simultaneous entry bug on Intel SMP machines. */
1337	if (test_and_set_bit(0, (void*)&net_dev->interrupt)) {
1338	printk(KERN_INFO"<6>" "%s: SMP simultaneous entry of "
1339	"an interrupt handler.\n", net_dev->name);
1340	net_dev->interrupt = 0; /* Avoid halting machine. */
1341	return;
1342	}
1343	#else
1344	if (net_dev->interrupt) {
1345	printk(KERN_INFO"<6>" "%s: Re-entering the interrupt handler.\n",
1346	net_dev->name);
1347	return;
1348	}
1349	net_dev->interrupt = 1;
1350	#endif
1351
1352	do {
1353	status = inl(ioaddr + isr)((__builtin_constant_p((ioaddr + isr)) && (ioaddr + isr ) < 256) ? __inlc(ioaddr + isr) : __inl(ioaddr + isr));
1354
1355	if ((status & (HIBERR\|TxURN\|TxERR\|TxIDLE\|RxORN\|RxERR\|RxOK)) == 0)
1356	/* nothing intresting happened */
1357	break;
1358
1359	/* why dow't we break after Tx/Rx case ?? keyword: full-duplex */
1360	if (status & (RxORN \| RxERR \| RxOK))
1361	/* Rx interrupt */
1362	sis900_rx(net_dev);
1363
1364	if (status & (TxURN \| TxERR \| TxIDLE))
1365	/* Tx interrupt */
1366	sis900_finish_xmit(net_dev);
1367
1368	/* something strange happened !!! */
1369	if (status & HIBERR) {
1370	printk(KERN_INFO"<6>" "%s: Abnormal interrupt,"
1371	"status %#8.8x.\n", net_dev->name, status);
1372	break;
1373	}
1374	if (--boguscnt < 0) {
1375	printk(KERN_INFO"<6>" "%s: Too much work at interrupt, "
1376	"interrupt status = %#8.8x.\n",
1377	net_dev->name, status);
1378	break;
1379	}
1380	} while (1);
1381
1382	if (sis900_debugdebug > 4)
1383	printk(KERN_INFO"<6>" "%s: exiting interrupt, "
1384	"interrupt status = 0x%#8.8x.\n",
1385	net_dev->name, inl(ioaddr + isr)((__builtin_constant_p((ioaddr + isr)) && (ioaddr + isr ) < 256) ? __inlc(ioaddr + isr) : __inl(ioaddr + isr)));
1386
1387	#if defined(__i386__1)
1388	clear_bit(0, (void*)&net_dev->interrupt);
1389	#else
1390	net_dev->interrupt = 0;
1391	#endif
1392	return;
1393	}
1394
1395	/* Process receive interrupt events, put buffer to higher layer and refill buffer pool
1396	Note: This fucntion is called by interrupt handler, don't do "too much" work here */
1397	static int sis900_rx(struct devicelinux_device *net_dev)
1398	{
1399	struct sis900_private sis_priv = (struct sis900_private )net_dev->priv;
1400	long ioaddr = net_dev->base_addr;
1401	unsigned int entry = sis_priv->cur_rx % NUM_RX_DESC16;
1402	u32 rx_status = sis_priv->rx_ring[entry].cmdsts;
1403
1404	if (sis900_debugdebug > 4)
1405	printk(KERN_INFO"<6>" "sis900_rx, cur_rx:%4.4d, dirty_rx:%4.4d "
1406	"status:0x%8.8x\n",
1407	sis_priv->cur_rx, sis_priv->dirty_rx, rx_status);
1408
1409	while (rx_status & OWN) {
1410	unsigned int rx_size;
1411
1412	rx_size = (rx_status & DSIZE) - CRC_SIZE4;
1413
1414	if (rx_status & (ABORT\|OVERRUN\|TOOLONG\|RUNT\|RXISERR\|CRCERR\|FAERR)) {
1415	/* corrupted packet received */
1416	if (sis900_debugdebug > 4)
1417	printk(KERN_INFO"<6>" "%s: Corrupted packet "
1418	"received, buffer status = 0x%8.8x.\n",
1419	net_dev->name, rx_status);
1420	sis_priv->stats.rx_errors++;
1421	if (rx_status & OVERRUN)
1422	sis_priv->stats.rx_over_errors++;
1423	if (rx_status & (TOOLONG\|RUNT))
1424	sis_priv->stats.rx_length_errors++;
1425	if (rx_status & (RXISERR \| FAERR))
1426	sis_priv->stats.rx_frame_errors++;
1427	if (rx_status & CRCERR)
1428	sis_priv->stats.rx_crc_errors++;
1429	/* reset buffer descriptor state */
1430	sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE1536;
1431	} else {
1432	struct sk_buff * skb;
1433
1434	/* This situation should never happen, but due to
1435	some unknow bugs, it is possible that
1436	we are working on NULL sk_buff :-( */
1437	if (sis_priv->rx_skbuff[entry] == NULL((void *) 0)) {
1438	printk(KERN_INFO"<6>" "%s: NULL pointer "
1439	"encountered in Rx ring, skipping\n",
1440	net_dev->name);
1441	break;
1442	}
1443
1444	/* gvie the socket buffer to upper layers */
1445	skb = sis_priv->rx_skbuff[entry];
1446	skb_put(skb, rx_size);
1447	skb->protocol = eth_type_trans(skb, net_dev)((unsigned short)0);
1448	netif_rx(skb);
1449
1450	/* some network statistics */
1451	if ((rx_status & BCAST) == MCAST)
1452	sis_priv->stats.multicast++;
1453	net_dev->last_rx = jiffies;
1454	/* sis_priv->stats.rx_bytes += rx_size;*/
1455	sis_priv->stats.rx_packets++;
1456
1457	/* refill the Rx buffer, what if there is not enought memory for
1458	new socket buffer ?? */
1459	if ((skb = dev_alloc_skb(RX_BUF_SIZE1536)) == NULL((void *) 0)) {
1460	/* not enough memory for skbuff, this makes a "hole"
1461	on the buffer ring, it is not clear how the
1462	hardware will react to this kind of degenerated
1463	buffer */
1464	printk(KERN_INFO"<6>" "%s: Memory squeeze,"
1465	"deferring packet.\n",
1466	net_dev->name);
1467	sis_priv->rx_skbuff[entry] = NULL((void *) 0);
1468	/* reset buffer descriptor state */
1469	sis_priv->rx_ring[entry].cmdsts = 0;
1470	sis_priv->rx_ring[entry].bufptr = 0;
1471	sis_priv->stats.rx_dropped++;
1472	break;
1473	}
1474	skb->dev = net_dev;
1475	sis_priv->rx_skbuff[entry] = skb;
1476	sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE1536;
1477	sis_priv->rx_ring[entry].bufptr = virt_to_busvirt_to_phys(skb->tail);
1478	sis_priv->dirty_rx++;
1479	}
1480	sis_priv->cur_rx++;
1481	entry = sis_priv->cur_rx % NUM_RX_DESC16;
1482	rx_status = sis_priv->rx_ring[entry].cmdsts;
1483	} // while
1484
1485	/* refill the Rx buffer, what if the rate of refilling is slower than
1486	consuming ?? */
1487	for (;sis_priv->cur_rx - sis_priv->dirty_rx > 0; sis_priv->dirty_rx++) {
1488	struct sk_buff *skb;
1489
1490	entry = sis_priv->dirty_rx % NUM_RX_DESC16;
1491
1492	if (sis_priv->rx_skbuff[entry] == NULL((void *) 0)) {
1493	if ((skb = dev_alloc_skb(RX_BUF_SIZE1536)) == NULL((void *) 0)) {
1494	/* not enough memory for skbuff, this makes a "hole"
1495	on the buffer ring, it is not clear how the
1496	hardware will react to this kind of degenerated
1497	buffer */
1498	printk(KERN_INFO"<6>" "%s: Memory squeeze,"
1499	"deferring packet.\n",
1500	net_dev->name);
1501	sis_priv->stats.rx_dropped++;
1502	break;
1503	}
1504	skb->dev = net_dev;
1505	sis_priv->rx_skbuff[entry] = skb;
1506	sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE1536;
1507	sis_priv->rx_ring[entry].bufptr = virt_to_busvirt_to_phys(skb->tail);
1508	}
1509	}
1510
1511	/* re-enable the potentially idle receive state matchine */
1512	outl(RxENA \| inl(ioaddr + cr), ioaddr + cr )((__builtin_constant_p((ioaddr + cr)) && (ioaddr + cr ) < 256) ? __outlc((RxENA \| ((__builtin_constant_p((ioaddr + cr)) && (ioaddr + cr) < 256) ? __inlc(ioaddr + cr ) : __inl(ioaddr + cr))),(ioaddr + cr)) : __outl((RxENA \| ((__builtin_constant_p ((ioaddr + cr)) && (ioaddr + cr) < 256) ? __inlc(ioaddr + cr) : __inl(ioaddr + cr))),(ioaddr + cr)));
1513
1514	return 0;
1515	}
1516
1517	/* finish up transmission of packets, check for error condition and free skbuff etc.
1518	Note: This fucntion is called by interrupt handler, don't do "too much" work here */
1519	static void sis900_finish_xmit (struct devicelinux_device *net_dev)
1520	{
1521	struct sis900_private sis_priv = (struct sis900_private )net_dev->priv;
1522
1523	for (; sis_priv->dirty_tx < sis_priv->cur_tx; sis_priv->dirty_tx++) {
1524	unsigned int entry;
1525	u32 tx_status;
1526
1527	entry = sis_priv->dirty_tx % NUM_TX_DESC16;
1528	tx_status = sis_priv->tx_ring[entry].cmdsts;
1529
1530	if (tx_status & OWN) {
1531	/* The packet is not transmitted yet (owned by hardware) !
1532	Note: the interrupt is generated only when Tx Machine
1533	is idle, so this is an almost impossible case */
1534	break;
1535	}
1536
1537	if (tx_status & (ABORT \| UNDERRUN \| OWCOLL)) {
1538	/* packet unsuccessfully transmitted */
1539	if (sis900_debugdebug > 4)
1540	printk(KERN_INFO"<6>" "%s: Transmit "
1541	"error, Tx status %8.8x.\n",
1542	net_dev->name, tx_status);
1543	sis_priv->stats.tx_errors++;
1544	if (tx_status & UNDERRUN)
1545	sis_priv->stats.tx_fifo_errors++;
1546	if (tx_status & ABORT)
1547	sis_priv->stats.tx_aborted_errors++;
1548	if (tx_status & NOCARRIER)
1549	sis_priv->stats.tx_carrier_errors++;
1550	if (tx_status & OWCOLL)
1551	sis_priv->stats.tx_window_errors++;
1552	} else {
1553	/* packet successfully transmitted */
1554	sis_priv->stats.collisions += (tx_status & COLCNT) >> 16;
1555	/* sis_priv->stats.tx_bytes += tx_status & DSIZE;*/
1556	sis_priv->stats.tx_packets++;
1557	}
1558	/* Free the original skb. */
1559	dev_free_skb(sis_priv->tx_skbuff[entry])dev_kfree_skb (sis_priv->tx_skbuff[entry], 0);;
1560	sis_priv->tx_skbuff[entry] = NULL((void *) 0);
1561	sis_priv->tx_ring[entry].bufptr = 0;
1562	sis_priv->tx_ring[entry].cmdsts = 0;
1563	}
1564
1565	if (sis_priv->tx_full && net_dev->tbusy &&
1566	sis_priv->cur_tx - sis_priv->dirty_tx < NUM_TX_DESC16 - 4) {
1567	/* The ring is no longer full, clear tbusy, tx_full and
1568	schedule more transmission by marking NET_BH */
1569	sis_priv->tx_full = 0;
1570	clear_bit(0, (void *)&net_dev->tbusy);
1571	mark_bh(NET_BH);
1572	}
1573	}
1574
1575	static int
1576	sis900_close(struct devicelinux_device *net_dev)
1577	{
1578	long ioaddr = net_dev->base_addr;
1579	struct sis900_private sis_priv = (struct sis900_private )net_dev->priv;
1580	int i;
1581
1582	net_dev->start = 0;
1583	net_dev->tbusy = 1;
1584
1585	/* Disable interrupts by clearing the interrupt mask. */
1586	outl(0x0000, ioaddr + imr)((__builtin_constant_p((ioaddr + imr)) && (ioaddr + imr ) < 256) ? __outlc((0x0000),(ioaddr + imr)) : __outl((0x0000 ),(ioaddr + imr)));
1587	outl(0x0000, ioaddr + ier)((__builtin_constant_p((ioaddr + ier)) && (ioaddr + ier ) < 256) ? __outlc((0x0000),(ioaddr + ier)) : __outl((0x0000 ),(ioaddr + ier)));
1588
1589	/* Stop the chip's Tx and Rx Status Machine */
1590	outl(RxDIS \| TxDIS \| inl(ioaddr + cr), ioaddr + cr)((__builtin_constant_p((ioaddr + cr)) && (ioaddr + cr ) < 256) ? __outlc((RxDIS \| TxDIS \| ((__builtin_constant_p ((ioaddr + cr)) && (ioaddr + cr) < 256) ? __inlc(ioaddr + cr) : __inl(ioaddr + cr))),(ioaddr + cr)) : __outl((RxDIS \| TxDIS \| ((__builtin_constant_p((ioaddr + cr)) && (ioaddr + cr) < 256) ? __inlc(ioaddr + cr) : __inl(ioaddr + cr))) ,(ioaddr + cr)));
1591
1592	del_timer(&sis_priv->timer);
1593
1594	free_irq(net_dev->irq, net_dev);
1595
1596	/* Free Tx and RX skbuff */
1597	for (i = 0; i < NUM_RX_DESC16; i++) {
1598	if (sis_priv->rx_skbuff[i] != NULL((void *) 0))
1599	dev_free_skb(sis_priv->rx_skbuff[i])dev_kfree_skb (sis_priv->rx_skbuff[i], 0);;
1600	sis_priv->rx_skbuff[i] = 0;
1601	}
1602	for (i = 0; i < NUM_TX_DESC16; i++) {
1603	if (sis_priv->tx_skbuff[i] != NULL((void *) 0))
1604	dev_free_skb(sis_priv->tx_skbuff[i])dev_kfree_skb (sis_priv->tx_skbuff[i], 0);;
1605	sis_priv->tx_skbuff[i] = 0;
1606	}
1607
1608	/* Green! Put the chip in low-power mode. */
1609
1610	MOD_DEC_USE_COUNTdo { } while (0);
1611
1612	return 0;
1613	}
1614
1615	static int mii_ioctl(struct devicelinux_device net_dev, struct ifreq rq, int cmd)
1616	{
1617	struct sis900_private sis_priv = (struct sis900_private )net_dev->priv;
1618	u16 data = (u16 )&rq->ifr_dataifr_ifru.ifru_data;
1619
1620	switch(cmd) {
1621	case SIOCDEVPRIVATE0x89F0: /* Get the address of the PHY in use. */
1622	data[0] = sis_priv->mii->phy_addr;
1623	/* Fall Through */
1624	case SIOCDEVPRIVATE0x89F0+1: /* Read the specified MII register. */
1625	data[3] = mdio_read(net_dev, data[0] & 0x1f, data[1] & 0x1f);
1626	return 0;
1627	case SIOCDEVPRIVATE0x89F0+2: /* Write the specified MII register */
1628	if (!suser())
1629	return -EPERM1;
1630	mdio_write(net_dev, data[0] & 0x1f, data[1] & 0x1f, data[2]);
1631	return 0;
1632	default:
1633	return -EOPNOTSUPP95;
1634	}
1635	}
1636
1637	static struct enet_statistics *
1638	sis900_get_stats(struct devicelinux_device *net_dev)
1639	{
1640	struct sis900_private sis_priv = (struct sis900_private )net_dev->priv;
1641
1642	return &sis_priv->stats;
1643	}
1644
1645
1646	/* SiS 900 uses the most sigificant 7 bits to index a 128 bits multicast
1647	* hash table, which makes this function a little bit different from other drivers
1648	* SiS 900 B0 & 635 M/B uses the most significat 8 bits to index 256 bits
1649	* multicast hash table.
1650	*/
1651	static u16 sis900_compute_hashtable_index(u8 *addr, u8 revision)
1652	{
1653
1654	/* what is the correct value of the POLYNOMIAL ??
1655	Donald Becker use 0x04C11DB7U
1656	Joseph Zbiciak im14u2c@primenet.com gives me the
1657	correct answer, thank you Joe !! */
1658	#define POLYNOMIAL0x04C11DB7L 0x04C11DB7L
1659	u32 crc = 0xffffffff, msb;
1660	int i, j;
1661	u32 byte;
1662
1663	for (i = 0; i < 6; i++) {
1664	byte = *addr++;
1665	for (j = 0; j < 8; j++) {
1666	msb = crc >> 31;
1667	crc <<= 1;
1668	if (msb ^ (byte & 1)) {
1669	crc ^= POLYNOMIAL0x04C11DB7L;
1670	}
1671	byte >>= 1;
1672	}
1673	}
1674
1675	/* leave 8 or 7 most siginifant bits */
1676	if((revision >= SIS635A_900_REV) \|\| (revision == SIS900B_900_REV))
1677	return ((int)(crc >> 24));
1678	else
1679	return ((int)(crc >> 25));
1680	}
1681
1682	static void set_rx_mode(struct devicelinux_device *net_dev)
1683	{
1684	long ioaddr = net_dev->base_addr;
1685	struct sis900_private * sis_priv = (struct sis900_private *)net_dev->priv;
1686	u16 mc_filter[16] = {0}; /* 256/128 bits multicast hash table */
1687	int i, table_entries;
1688	u32 rx_mode;
1689	u8 revision;
1690
1691	/* 635 Hash Table entires = 256(2^16) */
1692	pcibios_read_config_byte(sis_priv->pci_bus, sis_priv->pci_device_fn, PCI_CLASS_REVISION0x08, &revision);
1693	if((revision >= SIS635A_900_REV) \|\| (revision == SIS900B_900_REV))
1694	table_entries = 16;
1695	else
1696	table_entries = 8;
1697
1698	if (net_dev->flags & IFF_PROMISC0x100) {
1699	/* Accept any kinds of packets */
1700	rx_mode = RFPromiscuous;
1701	for (i = 0; i < table_entries; i++)
1702	mc_filter[i] = 0xffff;
1703	} else if ((net_dev->mc_count > multicast_filter_limit) \|\|
1704	(net_dev->flags & IFF_ALLMULTI0x200)) {
1705	/* too many multicast addresses or accept all multicast packets */
1706	rx_mode = RFAAB \| RFAAM;
1707	for (i = 0; i < table_entries; i++)
1708	mc_filter[i] = 0xffff;
1709	} else {
1710	/* Accept Broadcast packets, destination addresses match our MAC address,
1711	use Receive Filter to reject unwanted MCAST packets */
1712	struct dev_mc_list *mclist;
1713	rx_mode = RFAAB;
1714	for (i = 0, mclist = net_dev->mc_list; mclist && i < net_dev->mc_count;
1715	i++, mclist = mclist->next)
1716	set_bit(sis900_compute_hashtable_index(mclist->dmi_addr, revision),
1717	mc_filter);
1718	}
1719
1720	/* update Multicast Hash Table in Receive Filter */
1721	for (i = 0; i < table_entries; i++) {
1722	/* why plus 0x04 ??, That makes the correct value for hash table. */
1723	outl((u32)(0x00000004+i) << RFADDR_shift, ioaddr + rfcr)((__builtin_constant_p((ioaddr + rfcr)) && (ioaddr + rfcr ) < 256) ? __outlc(((u32)(0x00000004 +i) << 16),(ioaddr + rfcr)) : __outl(((u32)(0x00000004 +i) << 16),(ioaddr + rfcr)));
1724	outl(mc_filter[i], ioaddr + rfdr)((__builtin_constant_p((ioaddr + rfdr)) && (ioaddr + rfdr ) < 256) ? __outlc((mc_filter[i]),(ioaddr + rfdr)) : __outl ((mc_filter[i]),(ioaddr + rfdr)));
1725	}
1726
1727	outl(RFEN \| rx_mode, ioaddr + rfcr)((__builtin_constant_p((ioaddr + rfcr)) && (ioaddr + rfcr ) < 256) ? __outlc((RFEN \| rx_mode),(ioaddr + rfcr)) : __outl ((RFEN \| rx_mode),(ioaddr + rfcr)));
1728
1729	/* sis900 is capatable of looping back packet at MAC level for debugging purpose */
1730	if (net_dev->flags & IFF_LOOPBACK0x8) {
1731	u32 cr_saved;
1732	/* We must disable Tx/Rx before setting loopback mode */
1733	cr_saved = inl(ioaddr + cr)((__builtin_constant_p((ioaddr + cr)) && (ioaddr + cr ) < 256) ? __inlc(ioaddr + cr) : __inl(ioaddr + cr));
1734	outl(cr_saved \| TxDIS \| RxDIS, ioaddr + cr)((__builtin_constant_p((ioaddr + cr)) && (ioaddr + cr ) < 256) ? __outlc((cr_saved \| TxDIS \| RxDIS),(ioaddr + cr )) : __outl((cr_saved \| TxDIS \| RxDIS),(ioaddr + cr)));
1735	/* enable loopback */
1736	outl(inl(ioaddr + txcfg) \| TxMLB, ioaddr + txcfg)((__builtin_constant_p((ioaddr + txcfg)) && (ioaddr + txcfg) < 256) ? __outlc((((__builtin_constant_p((ioaddr + txcfg)) && (ioaddr + txcfg) < 256) ? __inlc(ioaddr + txcfg) : __inl(ioaddr + txcfg)) \| TxMLB),(ioaddr + txcfg)) : __outl((((__builtin_constant_p((ioaddr + txcfg)) && (ioaddr + txcfg) < 256) ? __inlc(ioaddr + txcfg) : __inl( ioaddr + txcfg)) \| TxMLB),(ioaddr + txcfg)));
1737	outl(inl(ioaddr + rxcfg) \| RxATX, ioaddr + rxcfg)((__builtin_constant_p((ioaddr + rxcfg)) && (ioaddr + rxcfg) < 256) ? __outlc((((__builtin_constant_p((ioaddr + rxcfg)) && (ioaddr + rxcfg) < 256) ? __inlc(ioaddr + rxcfg) : __inl(ioaddr + rxcfg)) \| RxATX),(ioaddr + rxcfg)) : __outl((((__builtin_constant_p((ioaddr + rxcfg)) && (ioaddr + rxcfg) < 256) ? __inlc(ioaddr + rxcfg) : __inl( ioaddr + rxcfg)) \| RxATX),(ioaddr + rxcfg)));
1738	/* restore cr */
1739	outl(cr_saved, ioaddr + cr)((__builtin_constant_p((ioaddr + cr)) && (ioaddr + cr ) < 256) ? __outlc((cr_saved),(ioaddr + cr)) : __outl((cr_saved ),(ioaddr + cr)));
1740	}
1741
1742	return;
1743	}
1744
1745	static void sis900_reset(struct devicelinux_device *net_dev)
1746	{
1747	long ioaddr = net_dev->base_addr;
1748	struct sis900_private sis_priv = (struct sis900_private )net_dev->priv;
1749	int i = 0;
1750	u8 revision;
1751	u32 status = TxRCMP \| RxRCMP;
1752
1753	outl(0, ioaddr + ier)((__builtin_constant_p((ioaddr + ier)) && (ioaddr + ier ) < 256) ? __outlc((0),(ioaddr + ier)) : __outl((0),(ioaddr + ier)));
1754	outl(0, ioaddr + imr)((__builtin_constant_p((ioaddr + imr)) && (ioaddr + imr ) < 256) ? __outlc((0),(ioaddr + imr)) : __outl((0),(ioaddr + imr)));
1755	outl(0, ioaddr + rfcr)((__builtin_constant_p((ioaddr + rfcr)) && (ioaddr + rfcr ) < 256) ? __outlc((0),(ioaddr + rfcr)) : __outl((0),(ioaddr + rfcr)));
1756
1757	outl(RxRESET \| TxRESET \| RESET \| inl(ioaddr + cr), ioaddr + cr)((__builtin_constant_p((ioaddr + cr)) && (ioaddr + cr ) < 256) ? __outlc((RxRESET \| TxRESET \| RESET \| ((__builtin_constant_p ((ioaddr + cr)) && (ioaddr + cr) < 256) ? __inlc(ioaddr + cr) : __inl(ioaddr + cr))),(ioaddr + cr)) : __outl((RxRESET \| TxRESET \| RESET \| ((__builtin_constant_p((ioaddr + cr)) && (ioaddr + cr) < 256) ? __inlc(ioaddr + cr) : __inl(ioaddr + cr))),(ioaddr + cr)));
1758
1759	/* Check that the chip has finished the reset. */
1760	while (status && (i++ < 1000)) {
1761	status ^= (inl(isr + ioaddr)((__builtin_constant_p((isr + ioaddr)) && (isr + ioaddr ) < 256) ? __inlc(isr + ioaddr) : __inl(isr + ioaddr)) & status);
1762	}
1763
1764	pcibios_read_config_byte(sis_priv->pci_bus, sis_priv->pci_device_fn, PCI_CLASS_REVISION0x08, &revision);
1765	if( (revision >= SIS635A_900_REV) \|\| (revision == SIS900B_900_REV) )
1766	outl(PESEL \| RND_CNT, ioaddr + cfg)((__builtin_constant_p((ioaddr + cfg)) && (ioaddr + cfg ) < 256) ? __outlc((PESEL \| RND_CNT),(ioaddr + cfg)) : __outl ((PESEL \| RND_CNT),(ioaddr + cfg)));
1767	else
1768	outl(PESEL, ioaddr + cfg)((__builtin_constant_p((ioaddr + cfg)) && (ioaddr + cfg ) < 256) ? __outlc((PESEL),(ioaddr + cfg)) : __outl((PESEL ),(ioaddr + cfg)));
1769	}
1770
1771	#ifdef MODULE
1772	int init_module(void)
1773	{
1774	return sis900_probe(NULL((void *) 0));
1775	}
1776
1777	void
1778	cleanup_module(void)
1779	{
1780	/* No need to check MOD_IN_USE, as sys_delete_module() checks. */
1781	while (root_sis900_dev) {
1782	struct sis900_private *sis_priv =
1783	(struct sis900_private *)root_sis900_dev->priv;
1784	struct devicelinux_device *next_dev = sis_priv->next_module;
1785	struct mii_phy phy = NULL((void ) 0);
1786
1787	while(sis_priv->first_mii){
1788	phy = sis_priv->first_mii;
1789	sis_priv->first_mii = phy->next;
1790	kfreelinux_kfree(phy);
1791	}
1792
1793	unregister_netdev(root_sis900_dev);
1794	release_region(root_sis900_dev->base_addr,
1795	sis_priv->mac->io_size);
1796	kfreelinux_kfree(sis_priv);
1797	kfreelinux_kfree(root_sis900_dev);
1798
1799	root_sis900_dev = next_dev;
1800	}
1801	}
1802
1803	#endif /* MODULE */