3 * 10/100/1000 Base-T Ethernet Driver for the ET1301 and ET131x series MACs
5 * Copyright © 2005 Agere Systems Inc.
9 *------------------------------------------------------------------------------
11 * et1310_rx.h - Defines, structs, enums, prototypes, etc. pertaining to data
14 *------------------------------------------------------------------------------
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59 #ifndef __ET1310_RX_H__
60 #define __ET1310_RX_H__
62 #include "et1310_address_map.h"
67 //#define FBR0_BUFFER_SIZE 256
70 //#define FBR1_BUFFER_SIZE 2048
74 #define MAX_DESC_PER_RING_RX 1024
76 /* number of RFDs - default and min */
78 #define RFD_LOW_WATER_MARK 40
79 #define NIC_MIN_NUM_RFD 64
80 #define NIC_DEFAULT_NUM_RFD 1024
82 #define RFD_LOW_WATER_MARK 20
83 #define NIC_MIN_NUM_RFD 64
84 #define NIC_DEFAULT_NUM_RFD 256
87 #define NUM_PACKETS_HANDLED 256
89 #define ALCATEL_BAD_STATUS 0xe47f0000
90 #define ALCATEL_MULTICAST_PKT 0x01000000
91 #define ALCATEL_BROADCAST_PKT 0x02000000
93 /* typedefs for Free Buffer Descriptors */
94 typedef union _FBR_WORD2_t {
97 #ifdef _BIT_FIELDS_HTOL
98 u32 reserved:22; // bits 10-31
99 u32 bi:10; // bits 0-9(Buffer Index)
101 u32 bi:10; // bits 0-9(Buffer Index)
102 u32 reserved:22; // bit 10-31
105 } FBR_WORD2_t, *PFBR_WORD2_t;
107 typedef struct _FBR_DESC_t {
111 } FBR_DESC_t, *PFBR_DESC_t;
113 /* Typedefs for Packet Status Ring Descriptors */
114 typedef union _PKT_STAT_DESC_WORD0_t {
117 #ifdef _BIT_FIELDS_HTOL
118 // top 16 bits are from the Alcatel Status Word as enumerated in
119 // PE-MCXMAC Data Sheet IPD DS54 0210-1 (also IPD-DS80 0205-2)
121 u32 asw_trunc:1; // bit 31(Rx frame truncated)
123 u32 asw_long_evt:1; // bit 31(Rx long event)
124 u32 asw_VLAN_tag:1; // bit 30(VLAN tag detected)
125 u32 asw_unsupported_op:1; // bit 29(unsupported OP code)
126 u32 asw_pause_frame:1; // bit 28(is a pause frame)
127 u32 asw_control_frame:1; // bit 27(is a control frame)
128 u32 asw_dribble_nibble:1; // bit 26(spurious bits after EOP)
129 u32 asw_broadcast:1; // bit 25(has a broadcast address)
130 u32 asw_multicast:1; // bit 24(has a multicast address)
131 u32 asw_OK:1; // bit 23(valid CRC + no code error)
132 u32 asw_too_long:1; // bit 22(frame length > 1518 bytes)
133 u32 asw_len_chk_err:1; // bit 21(frame length field incorrect)
134 u32 asw_CRC_err:1; // bit 20(CRC error)
135 u32 asw_code_err:1; // bit 19(one or more nibbles signalled as errors)
136 u32 asw_false_carrier_event:1; // bit 18(bad carrier since last good packet)
137 u32 asw_RX_DV_event:1; // bit 17(short receive event detected)
138 u32 asw_prev_pkt_dropped:1;// bit 16(e.g. IFG too small on previous)
139 u32 unused:5; // bits 11-15
140 u32 vp:1; // bit 10(VLAN Packet)
141 u32 jp:1; // bit 9(Jumbo Packet)
142 u32 ft:1; // bit 8(Frame Truncated)
143 u32 drop:1; // bit 7(Drop packet)
144 u32 rxmac_error:1; // bit 6(RXMAC Error Indicator)
145 u32 wol:1; // bit 5(WOL Event)
146 u32 tcpp:1; // bit 4(TCP checksum pass)
147 u32 tcpa:1; // bit 3(TCP checksum assist)
148 u32 ipp:1; // bit 2(IP checksum pass)
149 u32 ipa:1; // bit 1(IP checksum assist)
150 u32 hp:1; // bit 0(hash pass)
152 u32 hp:1; // bit 0(hash pass)
153 u32 ipa:1; // bit 1(IP checksum assist)
154 u32 ipp:1; // bit 2(IP checksum pass)
155 u32 tcpa:1; // bit 3(TCP checksum assist)
156 u32 tcpp:1; // bit 4(TCP checksum pass)
157 u32 wol:1; // bit 5(WOL Event)
158 u32 rxmac_error:1; // bit 6(RXMAC Error Indicator)
159 u32 drop:1; // bit 7(Drop packet)
160 u32 ft:1; // bit 8(Frame Truncated)
161 u32 jp:1; // bit 9(Jumbo Packet)
162 u32 vp:1; // bit 10(VLAN Packet)
163 u32 unused:5; // bits 11-15
164 u32 asw_prev_pkt_dropped:1;// bit 16(e.g. IFG too small on previous)
165 u32 asw_RX_DV_event:1; // bit 17(short receive event detected)
166 u32 asw_false_carrier_event:1; // bit 18(bad carrier since last good packet)
167 u32 asw_code_err:1; // bit 19(one or more nibbles signalled as errors)
168 u32 asw_CRC_err:1; // bit 20(CRC error)
169 u32 asw_len_chk_err:1; // bit 21(frame length field incorrect)
170 u32 asw_too_long:1; // bit 22(frame length > 1518 bytes)
171 u32 asw_OK:1; // bit 23(valid CRC + no code error)
172 u32 asw_multicast:1; // bit 24(has a multicast address)
173 u32 asw_broadcast:1; // bit 25(has a broadcast address)
174 u32 asw_dribble_nibble:1; // bit 26(spurious bits after EOP)
175 u32 asw_control_frame:1; // bit 27(is a control frame)
176 u32 asw_pause_frame:1; // bit 28(is a pause frame)
177 u32 asw_unsupported_op:1; // bit 29(unsupported OP code)
178 u32 asw_VLAN_tag:1; // bit 30(VLAN tag detected)
179 u32 asw_long_evt:1; // bit 31(Rx long event)
181 u32 asw_trunc:1; // bit 31(Rx frame truncated)
185 } PKT_STAT_DESC_WORD0_t, *PPKT_STAT_WORD0_t;
187 typedef union _PKT_STAT_DESC_WORD1_t {
190 #ifdef _BIT_FIELDS_HTOL
191 u32 unused:4; // bits 28-31
192 u32 ri:2; // bits 26-27(Ring Index)
193 u32 bi:10; // bits 16-25(Buffer Index)
194 u32 length:16; // bit 0-15(length in bytes)
196 u32 length:16; // bit 0-15(length in bytes)
197 u32 bi:10; // bits 16-25(Buffer Index)
198 u32 ri:2; // bits 26-27(Ring Index)
199 u32 unused:4; // bits 28-31
202 } PKT_STAT_DESC_WORD1_t, *PPKT_STAT_WORD1_t;
204 typedef struct _PKT_STAT_DESC_t {
205 PKT_STAT_DESC_WORD0_t word0;
206 PKT_STAT_DESC_WORD1_t word1;
207 } PKT_STAT_DESC_t, *PPKT_STAT_DESC_t;
209 /* Typedefs for the RX DMA status word */
212 * RXSTAT_WORD0_t structure holds part of the status bits of the Rx DMA engine
213 * that get copied out to memory by the ET-1310. Word 0 is a 32 bit word
214 * whichcontains Free Buffer ring 0 and 1 available offset.
216 typedef union _rxstat_word0_t {
219 #ifdef _BIT_FIELDS_HTOL
220 u32 FBR1unused:5; // bits 27-31
221 u32 FBR1wrap:1; // bit 26
222 u32 FBR1offset:10; // bits 16-25
223 u32 FBR0unused:5; // bits 11-15
224 u32 FBR0wrap:1; // bit 10
225 u32 FBR0offset:10; // bits 0-9
227 u32 FBR0offset:10; // bits 0-9
228 u32 FBR0wrap:1; // bit 10
229 u32 FBR0unused:5; // bits 11-15
230 u32 FBR1offset:10; // bits 16-25
231 u32 FBR1wrap:1; // bit 26
232 u32 FBR1unused:5; // bits 27-31
235 } RXSTAT_WORD0_t, *PRXSTAT_WORD0_t;
238 * RXSTAT_WORD1_t structure holds part of the status bits of the Rx DMA engine
239 * that get copied out to memory by the ET-1310. Word 3 is a 32 bit word
240 * which contains the Packet Status Ring available offset.
242 typedef union _rxstat_word1_t {
245 #ifdef _BIT_FIELDS_HTOL
246 u32 PSRunused:3; // bits 29-31
247 u32 PSRwrap:1; // bit 28
248 u32 PSRoffset:12; // bits 16-27
249 u32 reserved:16; // bits 0-15
251 u32 reserved:16; // bits 0-15
252 u32 PSRoffset:12; // bits 16-27
253 u32 PSRwrap:1; // bit 28
254 u32 PSRunused:3; // bits 29-31
257 } RXSTAT_WORD1_t, *PRXSTAT_WORD1_t;
260 * RX_STATUS_BLOCK_t is sructure representing the status of the Rx DMA engine
261 * it sits in free memory, and is pointed to by 0x101c / 0x1020
263 typedef struct _rx_status_block_t {
264 RXSTAT_WORD0_t Word0;
265 RXSTAT_WORD1_t Word1;
266 } RX_STATUS_BLOCK_t, *PRX_STATUS_BLOCK_t;
269 * Structure for look-up table holding free buffer ring pointers
271 typedef struct _FbrLookupTable {
272 void *Va[MAX_DESC_PER_RING_RX];
273 void *Buffer1[MAX_DESC_PER_RING_RX];
274 void *Buffer2[MAX_DESC_PER_RING_RX];
275 u32 PAHigh[MAX_DESC_PER_RING_RX];
276 u32 PALow[MAX_DESC_PER_RING_RX];
277 } FBRLOOKUPTABLE, *PFBRLOOKUPTABLE;
280 ONE_PACKET_INTERRUPT,
281 FOUR_PACKET_INTERRUPT
282 } eRX_INTERRUPT_STATE_t, *PeRX_INTERRUPT_STATE_t;
285 * Structure to hold the skb's in a list
287 typedef struct rx_skb_list_elem {
288 struct list_head skb_list_elem;
291 } RX_SKB_LIST_ELEM, *PRX_SKB_LIST_ELEM;
294 * RX_RING_t is sructure representing the adaptor's local reference(s) to the
297 typedef struct _rx_ring_t {
300 dma_addr_t pFbr0RingPa;
301 void *Fbr0MemVa[MAX_DESC_PER_RING_RX / FBR_CHUNKS];
302 dma_addr_t Fbr0MemPa[MAX_DESC_PER_RING_RX / FBR_CHUNKS];
305 DMA10W_t local_Fbr0_full;
310 dma_addr_t pFbr1RingPa;
311 void *Fbr1MemVa[MAX_DESC_PER_RING_RX / FBR_CHUNKS];
312 dma_addr_t Fbr1MemPa[MAX_DESC_PER_RING_RX / FBR_CHUNKS];
315 FBRLOOKUPTABLE *Fbr[2];
316 DMA10W_t local_Fbr1_full;
321 dma_addr_t pPSRingPa;
322 uint64_t pPSRingRealPa;
323 uint64_t pPSRingOffset;
324 RXDMA_PSR_FULL_OFFSET_t local_psr_full;
328 dma_addr_t pRxStatusPa;
329 uint64_t RxStatusRealPA;
330 uint64_t RxStatusOffset;
332 struct list_head RecvBufferPool;
335 struct list_head RecvList;
336 struct list_head RecvPendingList;
341 bool UnfinishedReceives;
343 struct list_head RecvPacketPool;
345 /* lookaside lists */
346 struct kmem_cache *RecvLookaside;
347 } RX_RING_t, *PRX_RING_t;
349 /* Forward reference of RFD */
352 /* Forward declaration of the private adapter structure */
353 struct et131x_adapter;
355 /* PROTOTYPES for Initialization */
356 int et131x_rx_dma_memory_alloc(struct et131x_adapter *adapter);
357 void et131x_rx_dma_memory_free(struct et131x_adapter *adapter);
358 int et131x_rfd_resources_alloc(struct et131x_adapter *adapter,
359 struct _MP_RFD *pMpRfd);
360 void et131x_rfd_resources_free(struct et131x_adapter *adapter,
361 struct _MP_RFD *pMpRfd);
362 int et131x_init_recv(struct et131x_adapter *adapter);
364 void ConfigRxDmaRegs(struct et131x_adapter *adapter);
365 void SetRxDmaTimer(struct et131x_adapter *adapter);
366 void et131x_rx_dma_disable(struct et131x_adapter *adapter);
367 void et131x_rx_dma_enable(struct et131x_adapter *adapter);
369 void et131x_reset_recv(struct et131x_adapter *adapter);
371 void et131x_handle_recv_interrupt(struct et131x_adapter *adapter);
373 #endif /* __ET1310_RX_H__ */