1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /******************************************************************************
3  *
4  *	(C)Copyright 1998,1999 SysKonnect,
5  *	a business unit of Schneider & Koch & Co. Datensysteme GmbH.
6  *
7  *	The information in this file is provided "AS IS" without warranty.
8  *
9  ******************************************************************************/
10 
11 /*
12  *	AMD Fplus in tag mode data structs
13  *	defs for fplustm.c
14  */
15 
16 #ifndef	_FPLUS_
17 #define _FPLUS_
18 
19 #ifndef	HW_PTR
20 #define	HW_PTR	void __iomem *
21 #endif
22 
23 /*
24  * fplus error statistic structure
25  */
26 struct err_st {
27 	u_long err_valid ;		/* memory status valid */
28 	u_long err_abort ;		/* memory status receive abort */
29 	u_long err_e_indicator ;	/* error indicator */
30 	u_long err_crc ;		/* error detected (CRC or length) */
31 	u_long err_llc_frame ;		/* LLC frame */
32 	u_long err_mac_frame ;		/* MAC frame */
33 	u_long err_smt_frame ;		/* SMT frame */
34 	u_long err_imp_frame ;		/* implementer frame */
35 	u_long err_no_buf ;		/* no buffer available */
36 	u_long err_too_long ;		/* longer than max. buffer */
37 	u_long err_bec_stat ;		/* beacon state entered */
38 	u_long err_clm_stat ;		/* claim state entered */
39 	u_long err_sifg_det ;		/* short interframe gap detect */
40 	u_long err_phinv ;		/* PHY invalid */
41 	u_long err_tkiss ;		/* token issued */
42 	u_long err_tkerr ;		/* token error */
43 } ;
44 
45 /*
46  *	Transmit Descriptor struct
47  */
48 struct s_smt_fp_txd {
49 	__le32 txd_tbctrl ;		/* transmit buffer control */
50 	__le32 txd_txdscr ;		/* transmit frame status word */
51 	__le32 txd_tbadr ;		/* physical tx buffer address */
52 	__le32 txd_ntdadr ;		/* physical pointer to the next TxD */
53 #ifdef	ENA_64BIT_SUP
54 	__le32 txd_tbadr_hi ;		/* physical tx buffer addr (high dword)*/
55 #endif
56 	char far *txd_virt ;		/* virtual pointer to the data frag */
57 					/* virt pointer to the next TxD */
58 	struct s_smt_fp_txd volatile far *txd_next ;
59 	struct s_txd_os txd_os ;	/* OS - specific struct */
60 } ;
61 
62 /*
63  *	Receive Descriptor struct
64  */
65 struct s_smt_fp_rxd {
66 	__le32 rxd_rbctrl ;		/* receive buffer control */
67 	__le32 rxd_rfsw ;		/* receive frame status word */
68 	__le32 rxd_rbadr ;		/* physical rx buffer address */
69 	__le32 rxd_nrdadr ;		/* physical pointer to the next RxD */
70 #ifdef	ENA_64BIT_SUP
71 	__le32 rxd_rbadr_hi ;		/* physical tx buffer addr (high dword)*/
72 #endif
73 	char far *rxd_virt ;		/* virtual pointer to the data frag */
74 					/* virt pointer to the next RxD */
75 	struct s_smt_fp_rxd volatile far *rxd_next ;
76 	struct s_rxd_os rxd_os ;	/* OS - specific struct */
77 } ;
78 
79 /*
80  *	Descriptor Union Definition
81  */
82 union s_fp_descr {
83 	struct	s_smt_fp_txd t ;		/* pointer to the TxD */
84 	struct	s_smt_fp_rxd r ;		/* pointer to the RxD */
85 } ;
86 
87 /*
88  *	TxD Ring Control struct
89  */
90 struct s_smt_tx_queue {
91 	struct s_smt_fp_txd volatile *tx_curr_put ; /* next free TxD */
92 	struct s_smt_fp_txd volatile *tx_prev_put ; /* shadow put pointer */
93 	struct s_smt_fp_txd volatile *tx_curr_get ; /* next TxD to release*/
94 	u_short tx_free ;			/* count of free TxD's */
95 	u_short tx_used ;			/* count of used TxD's */
96 	HW_PTR tx_bmu_ctl ;			/* BMU addr for tx start */
97 	HW_PTR tx_bmu_dsc ;			/* BMU addr for curr dsc. */
98 } ;
99 
100 /*
101  *	RxD Ring Control struct
102  */
103 struct s_smt_rx_queue {
104 	struct s_smt_fp_rxd volatile *rx_curr_put ; /* next RxD to queue into */
105 	struct s_smt_fp_rxd volatile *rx_prev_put ; /* shadow put pointer */
106 	struct s_smt_fp_rxd volatile *rx_curr_get ; /* next RxD to fill */
107 	u_short rx_free ;			/* count of free RxD's */
108 	u_short rx_used ;			/* count of used RxD's */
109 	HW_PTR rx_bmu_ctl ;			/* BMU addr for rx start */
110 	HW_PTR rx_bmu_dsc ;			/* BMU addr for curr dsc. */
111 } ;
112 
113 #define VOID_FRAME_OFF		0x00
114 #define CLAIM_FRAME_OFF		0x08
115 #define BEACON_FRAME_OFF	0x10
116 #define DBEACON_FRAME_OFF	0x18
117 #define RX_FIFO_OFF		0x21		/* to get a prime number for */
118 						/* the RX_FIFO_SPACE */
119 
120 #define RBC_MEM_SIZE		0x8000
121 #define SEND_ASYNC_AS_SYNC	0x1
122 #define	SYNC_TRAFFIC_ON		0x2
123 
124 /* big FIFO memory */
125 #define	RX_FIFO_SPACE		0x4000 - RX_FIFO_OFF
126 #define	TX_FIFO_SPACE		0x4000
127 
128 #define	TX_SMALL_FIFO		0x0900
129 #define	TX_MEDIUM_FIFO		TX_FIFO_SPACE / 2
130 #define	TX_LARGE_FIFO		TX_FIFO_SPACE - TX_SMALL_FIFO
131 
132 #define	RX_SMALL_FIFO		0x0900
133 #define	RX_LARGE_FIFO		RX_FIFO_SPACE - RX_SMALL_FIFO
134 
135 struct s_smt_fifo_conf {
136 	u_short	rbc_ram_start ;		/* FIFO start address */
137 	u_short	rbc_ram_end ;		/* FIFO size */
138 	u_short	rx1_fifo_start ;	/* rx queue start address */
139 	u_short	rx1_fifo_size ;		/* rx queue size */
140 	u_short	rx2_fifo_start ;	/* rx queue start address */
141 	u_short	rx2_fifo_size ;		/* rx queue size */
142 	u_short	tx_s_start ;		/* sync queue start address */
143 	u_short	tx_s_size ;		/* sync queue size */
144 	u_short	tx_a0_start ;		/* async queue A0 start address */
145 	u_short	tx_a0_size ;		/* async queue A0 size */
146 	u_short	fifo_config_mode ;	/* FIFO configuration mode */
147 } ;
148 
149 #define FM_ADDRX	(FM_ADDET|FM_EXGPA0|FM_EXGPA1)
150 
151 struct s_smt_fp {
152 	u_short	mdr2init ;		/* mode register 2 init value */
153 	u_short	mdr3init ;		/* mode register 3 init value */
154 	u_short frselreg_init ;		/* frame selection register init val */
155 	u_short	rx_mode ;		/* address mode broad/multi/promisc */
156 	u_short	nsa_mode ;
157 	u_short rx_prom ;
158 	u_short	exgpa ;
159 
160 	struct err_st err_stats ;	/* error statistics */
161 
162 	/*
163 	 * MAC buffers
164 	 */
165 	struct fddi_mac_sf {		/* special frame build buffer */
166 		u_char			mac_fc ;
167 		struct fddi_addr	mac_dest ;
168 		struct fddi_addr	mac_source ;
169 		u_char			mac_info[0x20] ;
170 	} mac_sfb ;
171 
172 
173 	/*
174 	 * queues
175 	 */
176 #define QUEUE_S			0
177 #define QUEUE_A0		1
178 #define QUEUE_R1		0
179 #define QUEUE_R2		1
180 #define USED_QUEUES		2
181 
182 	/*
183 	 * queue pointers; points to the queue dependent variables
184 	 */
185 	struct s_smt_tx_queue *tx[USED_QUEUES] ;
186 	struct s_smt_rx_queue *rx[USED_QUEUES] ;
187 
188 	/*
189 	 * queue dependent variables
190 	 */
191 	struct s_smt_tx_queue tx_q[USED_QUEUES] ;
192 	struct s_smt_rx_queue rx_q[USED_QUEUES] ;
193 
194 	/*
195 	 * FIFO configuration struct
196 	 */
197 	struct	s_smt_fifo_conf	fifo ;
198 
199 	/* last formac status */
200 	u_short	 s2u ;
201 	u_short	 s2l ;
202 
203 	/* calculated FORMAC+ reg.addr. */
204 	HW_PTR	fm_st1u ;
205 	HW_PTR	fm_st1l ;
206 	HW_PTR	fm_st2u ;
207 	HW_PTR	fm_st2l ;
208 	HW_PTR	fm_st3u ;
209 	HW_PTR	fm_st3l ;
210 
211 
212 	/*
213 	 * multicast table
214 	 */
215 #define FPMAX_MULTICAST 32
216 #define	SMT_MAX_MULTI	4
217 	struct {
218 		struct s_fpmc {
219 			struct fddi_addr	a ;	/* mc address */
220 			u_char			n ;	/* usage counter */
221 			u_char			perm ;	/* flag: permanent */
222 		} table[FPMAX_MULTICAST] ;
223 	} mc ;
224 	struct fddi_addr	group_addr ;
225 	u_long	func_addr ;		/* functional address */
226 	int	smt_slots_used ;	/* count of table entries for the SMT */
227 	int	os_slots_used ;		/* count of table entries */
228 					/* used by the os-specific module */
229 } ;
230 
231 /*
232  * modes for mac_set_rx_mode()
233  */
234 #define RX_ENABLE_ALLMULTI	1	/* enable all multicasts */
235 #define RX_DISABLE_ALLMULTI	2	/* disable "enable all multicasts" */
236 #define RX_ENABLE_PROMISC	3	/* enable promiscuous */
237 #define RX_DISABLE_PROMISC	4	/* disable promiscuous */
238 #define RX_ENABLE_NSA		5	/* enable reception of NSA frames */
239 #define RX_DISABLE_NSA		6	/* disable reception of NSA frames */
240 
241 
242 /*
243  * support for byte reversal in AIX
244  * (descriptors and pointers must be byte reversed in memory
245  *  CPU is big endian; M-Channel is little endian)
246  */
247 #ifdef	AIX
248 #define MDR_REV
249 #define	AIX_REVERSE(x)		((((x)<<24L)&0xff000000L)	+	\
250 				 (((x)<< 8L)&0x00ff0000L)	+	\
251 				 (((x)>> 8L)&0x0000ff00L)	+	\
252 				 (((x)>>24L)&0x000000ffL))
253 #else
254 #ifndef AIX_REVERSE
255 #define	AIX_REVERSE(x)	(x)
256 #endif
257 #endif
258 
259 #ifdef	MDR_REV
260 #define	MDR_REVERSE(x)		((((x)<<24L)&0xff000000L)	+	\
261 				 (((x)<< 8L)&0x00ff0000L)	+	\
262 				 (((x)>> 8L)&0x0000ff00L)	+	\
263 				 (((x)>>24L)&0x000000ffL))
264 #else
265 #ifndef MDR_REVERSE
266 #define	MDR_REVERSE(x)	(x)
267 #endif
268 #endif
269 
270 #endif
271