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