File: /usr/src/linux/drivers/net/sk_mca.h
1 #ifndef _SK_MCA_INCLUDE_
2 #define _SK_MCA_INCLUDE_
3
4 #ifdef _SK_MCA_DRIVER_
5
6 /* version-dependent functions/structures */
7
8 #if LINUX_VERSION_CODE >= 0x020318
9 #define SKMCA_READB(addr) isa_readb(addr)
10 #define SKMCA_READW(addr) isa_readw(addr)
11 #define SKMCA_WRITEB(data, addr) isa_writeb(data, addr)
12 #define SKMCA_WRITEW(data, addr) isa_writew(data, addr)
13 #define SKMCA_TOIO(dest, src, len) isa_memcpy_toio(dest, src, len)
14 #define SKMCA_FROMIO(dest, src, len) isa_memcpy_fromio(dest, src, len)
15 #define SKMCA_SETIO(dest, val, len) isa_memset_io(dest, val, len)
16 #define SKMCA_NETDEV net_device
17 #else
18 #define SKMCA_READB(addr) readb(addr)
19 #define SKMCA_READW(addr) readw(addr)
20 #define SKMCA_WRITEB(data, addr) writeb(data, addr)
21 #define SKMCA_WRITEW(data, addr) writew(data, addr)
22 #define SKMCA_TOIO(dest, src, len) memcpy_toio(dest, src, len)
23 #define SKMCA_FROMIO(dest, src, len) memcpy_fromio(dest, src, len)
24 #define SKMCA_SETIO(dest, val, len) memset_io(dest, val, len)
25 #define SKMCA_NETDEV device
26 #endif
27
28 /* Adapter ID's */
29 #define SKNET_MCA_ID 0x6afd
30 #define SKNET_JUNIOR_MCA_ID 0x6be9
31
32 /* media enumeration - defined in a way that it fits onto the MC2+'s
33 POS registers... */
34
35 typedef enum { Media_10Base2, Media_10BaseT,
36 Media_10Base5, Media_Unknown, Media_Count
37 } skmca_medium;
38
39 /* private structure */
40 typedef struct {
41 unsigned int slot; /* MCA-Slot-# */
42 unsigned int macbase; /* base address of MAC address PROM */
43 unsigned int ioregaddr; /* address of I/O-register (Lo) */
44 unsigned int ctrladdr; /* address of control/stat register */
45 unsigned int cmdaddr; /* address of I/O-command register */
46 int nextrx; /* index of next RX descriptor to
47 be read */
48 int nexttxput; /* index of next free TX descriptor */
49 int nexttxdone; /* index of next TX descriptor to
50 be finished */
51 int txbusy; /* # of busy TX descriptors */
52 struct net_device_stats stat; /* packet statistics */
53 int realirq; /* memorizes actual IRQ, even when
54 currently not allocated */
55 skmca_medium medium; /* physical cannector */
56 } skmca_priv;
57
58 /* card registers: control/status register bits */
59
60 #define CTRL_ADR_DATA 0 /* Bit 0 = 0 ->access data register */
61 #define CTRL_ADR_RAP 1 /* Bit 0 = 1 ->access RAP register */
62 #define CTRL_RW_WRITE 0 /* Bit 1 = 0 ->write register */
63 #define CTRL_RW_READ 2 /* Bit 1 = 1 ->read register */
64 #define CTRL_RESET_ON 0 /* Bit 3 = 0 ->reset board */
65 #define CTRL_RESET_OFF 8 /* Bit 3 = 1 ->no reset of board */
66
67 #define STAT_ADR_DATA 0 /* Bit 0 of ctrl register read back */
68 #define STAT_ADR_RAP 1
69 #define STAT_RW_WRITE 0 /* Bit 1 of ctrl register read back */
70 #define STAT_RW_READ 2
71 #define STAT_RESET_ON 0 /* Bit 3 of ctrl register read back */
72 #define STAT_RESET_OFF 8
73 #define STAT_IRQ_ACT 0 /* interrupt pending */
74 #define STAT_IRQ_NOACT 16 /* no interrupt pending */
75 #define STAT_IO_NOBUSY 0 /* no transfer busy */
76 #define STAT_IO_BUSY 32 /* transfer busy */
77
78 /* I/O command register bits */
79
80 #define IOCMD_GO 128 /* Bit 7 = 1 -> start register xfer */
81
82 /* LANCE registers */
83
84 #define LANCE_CSR0 0 /* Status/Control */
85
86 #define CSR0_ERR 0x8000 /* general error flag */
87 #define CSR0_BABL 0x4000 /* transmitter timeout */
88 #define CSR0_CERR 0x2000 /* collision error */
89 #define CSR0_MISS 0x1000 /* lost Rx block */
90 #define CSR0_MERR 0x0800 /* memory access error */
91 #define CSR0_RINT 0x0400 /* receiver interrupt */
92 #define CSR0_TINT 0x0200 /* transmitter interrupt */
93 #define CSR0_IDON 0x0100 /* initialization done */
94 #define CSR0_INTR 0x0080 /* general interrupt flag */
95 #define CSR0_INEA 0x0040 /* interrupt enable */
96 #define CSR0_RXON 0x0020 /* receiver enabled */
97 #define CSR0_TXON 0x0010 /* transmitter enabled */
98 #define CSR0_TDMD 0x0008 /* force transmission now */
99 #define CSR0_STOP 0x0004 /* stop LANCE */
100 #define CSR0_STRT 0x0002 /* start LANCE */
101 #define CSR0_INIT 0x0001 /* read initialization block */
102
103 #define LANCE_CSR1 1 /* addr bit 0..15 of initialization */
104 #define LANCE_CSR2 2 /* 16..23 block */
105
106 #define LANCE_CSR3 3 /* Bus control */
107 #define CSR3_BCON_HOLD 0 /* Bit 0 = 0 -> BM1,BM0,HOLD */
108 #define CSR3_BCON_BUSRQ 1 /* Bit 0 = 1 -> BUSAK0,BYTE,BUSRQ */
109 #define CSR3_ALE_HIGH 0 /* Bit 1 = 0 -> ALE asserted high */
110 #define CSR3_ALE_LOW 2 /* Bit 1 = 1 -> ALE asserted low */
111 #define CSR3_BSWAP_OFF 0 /* Bit 2 = 0 -> no byte swap */
112 #define CSR3_BSWAP_ON 0 /* Bit 2 = 1 -> byte swap */
113
114 /* LANCE structures */
115
116 typedef struct { /* LANCE initialization block */
117 u16 Mode; /* mode flags */
118 u8 PAdr[6]; /* MAC address */
119 u8 LAdrF[8]; /* Multicast filter */
120 u32 RdrP; /* Receive descriptor */
121 u32 TdrP; /* Transmit descriptor */
122 } LANCE_InitBlock;
123
124 /* Mode flags init block */
125
126 #define LANCE_INIT_PROM 0x8000 /* enable promiscous mode */
127 #define LANCE_INIT_INTL 0x0040 /* internal loopback */
128 #define LANCE_INIT_DRTY 0x0020 /* disable retry */
129 #define LANCE_INIT_COLL 0x0010 /* force collision */
130 #define LANCE_INIT_DTCR 0x0008 /* disable transmit CRC */
131 #define LANCE_INIT_LOOP 0x0004 /* loopback */
132 #define LANCE_INIT_DTX 0x0002 /* disable transmitter */
133 #define LANCE_INIT_DRX 0x0001 /* disable receiver */
134
135 typedef struct { /* LANCE Tx descriptor */
136 u16 LowAddr; /* bit 0..15 of address */
137 u16 Flags; /* bit 16..23 of address + Flags */
138 u16 Len; /* 2s complement of packet length */
139 u16 Status; /* Result of transmission */
140 } LANCE_TxDescr;
141
142 #define TXDSCR_FLAGS_OWN 0x8000 /* LANCE owns descriptor */
143 #define TXDSCR_FLAGS_ERR 0x4000 /* summary error flag */
144 #define TXDSCR_FLAGS_MORE 0x1000 /* more than one retry needed? */
145 #define TXDSCR_FLAGS_ONE 0x0800 /* one retry? */
146 #define TXDSCR_FLAGS_DEF 0x0400 /* transmission deferred? */
147 #define TXDSCR_FLAGS_STP 0x0200 /* first packet in chain? */
148 #define TXDSCR_FLAGS_ENP 0x0100 /* last packet in chain? */
149
150 #define TXDSCR_STATUS_BUFF 0x8000 /* buffer error? */
151 #define TXDSCR_STATUS_UFLO 0x4000 /* silo underflow during transmit? */
152 #define TXDSCR_STATUS_LCOL 0x1000 /* late collision? */
153 #define TXDSCR_STATUS_LCAR 0x0800 /* loss of carrier? */
154 #define TXDSCR_STATUS_RTRY 0x0400 /* retry error? */
155
156 typedef struct { /* LANCE Rx descriptor */
157 u16 LowAddr; /* bit 0..15 of address */
158 u16 Flags; /* bit 16..23 of address + Flags */
159 u16 MaxLen; /* 2s complement of buffer length */
160 u16 Len; /* packet length */
161 } LANCE_RxDescr;
162
163 #define RXDSCR_FLAGS_OWN 0x8000 /* LANCE owns descriptor */
164 #define RXDSCR_FLAGS_ERR 0x4000 /* summary error flag */
165 #define RXDSCR_FLAGS_FRAM 0x2000 /* framing error flag */
166 #define RXDSCR_FLAGS_OFLO 0x1000 /* FIFO overflow? */
167 #define RXDSCR_FLAGS_CRC 0x0800 /* CRC error? */
168 #define RXDSCR_FLAGS_BUFF 0x0400 /* buffer error? */
169 #define RXDSCR_FLAGS_STP 0x0200 /* first packet in chain? */
170 #define RXDCSR_FLAGS_ENP 0x0100 /* last packet in chain? */
171
172 /* RAM layout */
173
174 #define TXCOUNT 4 /* length of TX descriptor queue */
175 #define LTXCOUNT 2 /* log2 of it */
176 #define RXCOUNT 4 /* length of RX descriptor queue */
177 #define LRXCOUNT 2 /* log2 of it */
178
179 #define RAM_INITBASE 0 /* LANCE init block */
180 #define RAM_TXBASE 24 /* Start of TX descriptor queue */
181 #define RAM_RXBASE \
182 (RAM_TXBASE + (TXCOUNT * 8)) /* Start of RX descriptor queue */
183 #define RAM_DATABASE \
184 (RAM_RXBASE + (RXCOUNT * 8)) /* Start of data area for frames */
185 #define RAM_BUFSIZE 1580 /* max. frame size - should never be
186 reached */
187
188 #endif /* _SK_MCA_DRIVER_ */
189
190 extern int skmca_probe(struct SKMCA_NETDEV *);
191
192
193 #endif /* _SK_MCA_INCLUDE_ */
194