xref: /titanic_41/usr/src/grub/grub-0.97/netboot/sis900.h (revision 1b8adde7ba7d5e04395c141c5400dc2cffd7d809)
1 /* -*- Mode:C; c-basic-offset:4; -*- */
2 
3 /* Definitions for SiS ethernet controllers including 7014/7016 and 900
4  * References:
5  *   SiS 7016 Fast Ethernet PCI Bus 10/100 Mbps LAN Controller with OnNow Support,
6  *      preliminary Rev. 1.0 Jan. 14, 1998
7  *   SiS 900 Fast Ethernet PCI Bus 10/100 Mbps LAN Single Chip with OnNow Support,
8  *      preliminary Rev. 1.0 Nov. 10, 1998
9  *   SiS 7014 Single Chip 100BASE-TX/10BASE-T Physical Layer Solution,
10  *      preliminary Rev. 1.0 Jan. 18, 1998
11  *   http://www.sis.com.tw/support/databook.htm
12  */
13 
14 /* MAC operationl registers of SiS 7016 and SiS 900 ethernet controller */
15 /* The I/O extent, SiS 900 needs 256 bytes of io address */
16 #define SIS900_TOTAL_SIZE 0x100
17 
18 /* Symbolic offsets to registers. */
19 enum sis900_registers {
20     cr=0x0,                 /* Command Register */
21     cfg=0x4,                /* Configuration Register */
22     mear=0x8,               /* EEPROM Access Register */
23     ptscr=0xc,              /* PCI Test Control Register */
24     isr=0x10,               /* Interrupt Status Register */
25     imr=0x14,               /* Interrupt Mask Register */
26     ier=0x18,               /* Interrupt Enable Register */
27     epar=0x18,              /* Enhanced PHY Access Register */
28     txdp=0x20,              /* Transmit Descriptor Pointer Register */
29     txcfg=0x24,             /* Transmit Configuration Register */
30     rxdp=0x30,              /* Receive Descriptor Pointer Register */
31     rxcfg=0x34,             /* Receive Configuration Register */
32     flctrl=0x38,            /* Flow Control Register */
33     rxlen=0x3c,             /* Receive Packet Length Register */
34     rfcr=0x48,              /* Receive Filter Control Register */
35     rfdr=0x4C,              /* Receive Filter Data Register */
36     pmctrl=0xB0,            /* Power Management Control Register */
37     pmer=0xB4               /* Power Management Wake-up Event Register */
38 };
39 
40 /* Symbolic names for bits in various registers */
41 enum sis900_command_register_bits {
42     RELOAD     = 0x00000400,
43     ACCESSMODE = 0x00000200,
44     RESET      = 0x00000100,
45     SWI        = 0x00000080,
46     RxRESET    = 0x00000020,
47     TxRESET    = 0x00000010,
48     RxDIS      = 0x00000008,
49     RxENA      = 0x00000004,
50     TxDIS      = 0x00000002,
51     TxENA      = 0x00000001
52 };
53 
54 enum sis900_configuration_register_bits {
55     DESCRFMT = 0x00000100, /* 7016 specific */
56     REQALG   = 0x00000080,
57     SB       = 0x00000040,
58     POW      = 0x00000020,
59     EXD      = 0x00000010,
60     PESEL    = 0x00000008,
61     LPM      = 0x00000004,
62     BEM      = 0x00000001,
63     RND_CNT  = 0x00000400,
64     FAIR_BACKOFF = 0x00000200,
65     EDB_MASTER_EN = 0x00002000
66 };
67 
68 enum sis900_eeprom_access_reigster_bits {
69     MDC   = 0x00000040,
70     MDDIR = 0x00000020,
71     MDIO  = 0x00000010, /* 7016 specific */
72     EECS  = 0x00000008,
73     EECLK = 0x00000004,
74     EEDO  = 0x00000002,
75     EEDI  = 0x00000001
76 };
77 
78 enum sis900_interrupt_register_bits {
79     WKEVT      = 0x10000000,
80     TxPAUSEEND = 0x08000000,
81     TxPAUSE    = 0x04000000,
82     TxRCMP     = 0x02000000,
83     RxRCMP     = 0x01000000,
84     DPERR      = 0x00800000,
85     SSERR      = 0x00400000,
86     RMABT      = 0x00200000,
87     RTABT      = 0x00100000,
88     RxSOVR     = 0x00010000,
89     HIBERR     = 0x00008000,
90     SWINT      = 0x00001000,
91     MIBINT     = 0x00000800,
92     TxURN      = 0x00000400,
93     TxIDLE     = 0x00000200,
94     TxERR      = 0x00000100,
95     TxDESC     = 0x00000080,
96     TxOK       = 0x00000040,
97     RxORN      = 0x00000020,
98     RxIDLE     = 0x00000010,
99     RxEARLY    = 0x00000008,
100     RxERR      = 0x00000004,
101     RxDESC     = 0x00000002,
102     RxOK       = 0x00000001
103 };
104 
105 enum sis900_interrupt_enable_reigster_bits {
106     IE = 0x00000001
107 };
108 
109 /* maximum dma burst fro transmission and receive*/
110 #define MAX_DMA_RANGE   7       /* actually 0 means MAXIMUM !! */
111 #define TxMXDMA_shift   20
112 #define RxMXDMA_shift   20
113 #define TX_DMA_BURST    0
114 #define RX_DMA_BURST    0
115 
116 enum sis900_tx_rx_dma{
117 	        DMA_BURST_512 = 0,      DMA_BURST_64 = 5
118 };
119 
120 /* transmit FIFO threshholds */
121 #define TX_FILL_THRESH  16      /* 1/4 FIFO size */
122 #define TxFILLT_shift   8
123 #define TxDRNT_shift    0
124 #define TxDRNT_100      48      /* 3/4 FIFO size */
125 #define TxDRNT_10       16      /* 1/2 FIFO size */
126 
127 enum sis900_transmit_config_register_bits {
128     TxCSI   = 0x80000000,
129     TxHBI   = 0x40000000,
130     TxMLB   = 0x20000000,
131     TxATP   = 0x10000000,
132     TxIFG   = 0x0C000000,
133     TxFILLT = 0x00003F00,
134     TxDRNT  = 0x0000003F
135 };
136 
137 /* recevie FIFO thresholds */
138 #define RxDRNT_shift     1
139 #define RxDRNT_100      16      /* 1/2 FIFO size */
140 #define RxDRNT_10       24      /* 3/4 FIFO size */
141 
142 enum sis900_reveive_config_register_bits {
143     RxAEP  = 0x80000000,
144     RxARP  = 0x40000000,
145     RxATX  = 0x10000000,
146     RxAJAB = 0x08000000,
147     RxDRNT = 0x0000007F
148 };
149 
150 #define RFAA_shift      28
151 #define RFADDR_shift    16
152 
153 enum sis900_receive_filter_control_register_bits {
154     RFEN  = 0x80000000,
155     RFAAB = 0x40000000,
156     RFAAM = 0x20000000,
157     RFAAP = 0x10000000,
158     RFPromiscuous = (RFAAB|RFAAM|RFAAP)
159 };
160 
161 enum sis900_reveive_filter_data_mask {
162     RFDAT =  0x0000FFFF
163 };
164 
165 /* EEPROM Addresses */
166 enum sis900_eeprom_address {
167     EEPROMSignature = 0x00,
168     EEPROMVendorID  = 0x02,
169     EEPROMDeviceID  = 0x03,
170     EEPROMMACAddr   = 0x08,
171     EEPROMChecksum  = 0x0b
172 };
173 
174 /* The EEPROM commands include the alway-set leading bit. Refer to NM93Cxx datasheet */
175 enum sis900_eeprom_command {
176     EEread          = 0x0180,
177     EEwrite         = 0x0140,
178     EEerase         = 0x01C0,
179     EEwriteEnable   = 0x0130,
180     EEwriteDisable  = 0x0100,
181     EEeraseAll      = 0x0120,
182     EEwriteAll      = 0x0110,
183     EEaddrMask      = 0x013F,
184     EEcmdShift 	    = 16
185 };
186 /* For SiS962 or SiS963, request the eeprom software access */
187 enum sis96x_eeprom_command {
188 	EEREQ = 0x00000400, EEDONE = 0x00000200, EEGNT = 0x00000100
189 };
190 
191 /* Manamgement Data I/O (mdio) frame */
192 #define MIIread         0x6000
193 #define MIIwrite        0x5002
194 #define MIIpmdShift     7
195 #define MIIregShift     2
196 #define MIIcmdLen       16
197 #define MIIcmdShift     16
198 
199 /* Buffer Descriptor Status*/
200 enum sis900_buffer_status {
201     OWN    = 0x80000000,
202     MORE   = 0x40000000,
203     INTR   = 0x20000000,
204     SUPCRC = 0x10000000,
205     INCCRC = 0x10000000,
206     OK     = 0x08000000,
207     DSIZE  = 0x00000FFF
208 };
209 
210 /* Status for TX Buffers */
211 enum sis900_tx_buffer_status {
212     ABORT      = 0x04000000,
213     UNDERRUN   = 0x02000000,
214     NOCARRIER  = 0x01000000,
215     DEFERD     = 0x00800000,
216     EXCDEFER   = 0x00400000,
217     OWCOLL     = 0x00200000,
218     EXCCOLL    = 0x00100000,
219     COLCNT     = 0x000F0000
220 };
221 
222 enum sis900_rx_bufer_status {
223     OVERRUN    = 0x02000000,
224     DEST       = 0x00800000,
225     BCAST      = 0x01800000,
226     MCAST      = 0x01000000,
227     UNIMATCH   = 0x00800000,
228     TOOLONG    = 0x00400000,
229     RUNT       = 0x00200000,
230     RXISERR    = 0x00100000,
231     CRCERR     = 0x00080000,
232     FAERR      = 0x00040000,
233     LOOPBK     = 0x00020000,
234     RXCOL      = 0x00010000
235 };
236 
237 /* MII register offsets */
238 enum mii_registers {
239     MII_CONTROL = 0x0000,
240     MII_STATUS  = 0x0001,
241     MII_PHY_ID0 = 0x0002,
242     MII_PHY_ID1 = 0x0003,
243     MII_ANADV   = 0x0004,
244     MII_ANLPAR  = 0x0005,
245     MII_ANEXT   = 0x0006
246 };
247 
248 /* mii registers specific to SiS 900 */
249 enum sis_mii_registers {
250     MII_CONFIG1 = 0x0010,
251     MII_CONFIG2 = 0x0011,
252     MII_STSOUT  = 0x0012,
253     MII_MASK    = 0x0013,
254     MII_RESV    = 0x0014
255 };
256 
257 /* mii registers specific to AMD 79C901 */
258 enum amd_mii_registers {
259     MII_STATUS_SUMMARY = 0x0018
260 };
261 
262 /* mii registers specific to ICS 1893 */
263 enum ics_mii_registers {
264 	MII_EXTCTRL  = 0x0010, MII_QPDSTS = 0x0011, MII_10BTOP = 0x0012,
265 	MII_EXTCTRL2 = 0x0013
266 };
267 
268 
269 
270 /* MII Control register bit definitions. */
271 enum mii_control_register_bits {
272     MII_CNTL_FDX      = 0x0100,
273     MII_CNTL_RST_AUTO = 0x0200,
274     MII_CNTL_ISOLATE  = 0x0400,
275     MII_CNTL_PWRDWN   = 0x0800,
276     MII_CNTL_AUTO     = 0x1000,
277     MII_CNTL_SPEED    = 0x2000,
278     MII_CNTL_LPBK     = 0x4000,
279     MII_CNTL_RESET    = 0x8000
280 };
281 
282 /* MII Status register bit  */
283 enum mii_status_register_bits {
284     MII_STAT_EXT        = 0x0001,
285     MII_STAT_JAB        = 0x0002,
286     MII_STAT_LINK       = 0x0004,
287     MII_STAT_CAN_AUTO   = 0x0008,
288     MII_STAT_FAULT      = 0x0010,
289     MII_STAT_AUTO_DONE  = 0x0020,
290     MII_STAT_CAN_T      = 0x0800,
291     MII_STAT_CAN_T_FDX  = 0x1000,
292     MII_STAT_CAN_TX     = 0x2000,
293     MII_STAT_CAN_TX_FDX = 0x4000,
294     MII_STAT_CAN_T4     = 0x8000
295 };
296 
297 #define         MII_ID1_OUI_LO          0xFC00  /* low bits of OUI mask */
298 #define         MII_ID1_MODEL           0x03F0  /* model number */
299 #define         MII_ID1_REV             0x000F  /* model number */
300 
301 /* MII NWAY Register Bits ...
302    valid for the ANAR (Auto-Negotiation Advertisement) and
303    ANLPAR (Auto-Negotiation Link Partner) registers */
304 enum mii_nway_register_bits {
305     MII_NWAY_NODE_SEL = 0x001f,
306     MII_NWAY_CSMA_CD  = 0x0001,
307     MII_NWAY_T        = 0x0020,
308     MII_NWAY_T_FDX    = 0x0040,
309     MII_NWAY_TX       = 0x0080,
310     MII_NWAY_TX_FDX   = 0x0100,
311     MII_NWAY_T4       = 0x0200,
312     MII_NWAY_PAUSE    = 0x0400,
313     MII_NWAY_RF       = 0x2000,
314     MII_NWAY_ACK      = 0x4000,
315     MII_NWAY_NP       = 0x8000
316 };
317 
318 enum mii_stsout_register_bits {
319     MII_STSOUT_LINK_FAIL = 0x4000,
320     MII_STSOUT_SPD       = 0x0080,
321     MII_STSOUT_DPLX      = 0x0040
322 };
323 
324 enum mii_stsics_register_bits {
325 	MII_STSICS_SPD  = 0x8000, MII_STSICS_DPLX = 0x4000,
326 	MII_STSICS_LINKSTS = 0x0001
327 };
328 
329 enum mii_stssum_register_bits {
330     MII_STSSUM_LINK = 0x0008,
331     MII_STSSUM_DPLX = 0x0004,
332     MII_STSSUM_AUTO = 0x0002,
333     MII_STSSUM_SPD  = 0x0001
334 };
335 
336 enum sis900_revision_id {
337 	SIS630A_900_REV = 0x80,		SIS630E_900_REV = 0x81,
338 	SIS630S_900_REV = 0x82,		SIS630EA1_900_REV = 0x83,
339 	SIS630ET_900_REV = 0x84,        SIS635A_900_REV = 0x90,
340 	SIS96x_900_REV = 0X91,		SIS900B_900_REV = 0x03
341 };
342 
343 enum sis630_revision_id {
344 	SIS630A0    = 0x00, SIS630A1      = 0x01,
345 	SIS630B0    = 0x10, SIS630B1      = 0x11
346 };
347 
348 #define FDX_CAPABLE_DUPLEX_UNKNOWN      0
349 #define FDX_CAPABLE_HALF_SELECTED       1
350 #define FDX_CAPABLE_FULL_SELECTED       2
351 
352 #define HW_SPEED_UNCONFIG               0
353 #define HW_SPEED_HOME                   1
354 #define HW_SPEED_10_MBPS                10
355 #define HW_SPEED_100_MBPS               100
356 #define HW_SPEED_DEFAULT                (HW_SPEED_100_MBPS)
357 
358 #define CRC_SIZE        4
359 #define MAC_HEADER_SIZE 14
360 
361 #define TX_BUF_SIZE     1536
362 #define RX_BUF_SIZE     1536
363 
364 #define NUM_RX_DESC     4              /* Number of Rx descriptor registers. */
365 
366 typedef unsigned char  u8;
367 typedef   signed char  s8;
368 typedef unsigned short u16;
369 typedef   signed short s16;
370 typedef unsigned int   u32;
371 typedef   signed int   s32;
372 
373 /* Time in ticks before concluding the transmitter is hung. */
374 #define TX_TIMEOUT       (4*TICKS_PER_SEC)
375 
376 typedef struct _BufferDesc {
377     u32              link;
378     volatile u32     cmdsts;
379     u32              bufptr;
380 } BufferDesc;
381