1 #ifndef __MV643XX_ETH_H__
2 #define __MV643XX_ETH_H__
4 #include <linux/module.h>
5 #include <linux/kernel.h>
6 #include <linux/spinlock.h>
7 #include <linux/workqueue.h>
10 #include <linux/mv643xx_eth.h>
12 #include <asm/dma-mapping.h>
14 /* Checksum offload for Tx works for most packets, but
15 * fails if previous packet sent did not use hw csum
17 #define MV643XX_CHECKSUM_OFFLOAD_TX
19 #define MV643XX_TX_FAST_REFILL
23 * Number of RX / TX descriptors on RX / TX rings.
24 * Note that allocating RX descriptors is done by allocating the RX
25 * ring AND a preallocated RX buffers (skb's) for each descriptor.
26 * The TX descriptors only allocates the TX descriptors ring,
27 * with no pre allocated TX buffers (skb's are allocated by higher layers.
30 /* Default TX ring size is 1000 descriptors */
31 #define MV643XX_DEFAULT_TX_QUEUE_SIZE 1000
33 /* Default RX ring size is 400 descriptors */
34 #define MV643XX_DEFAULT_RX_QUEUE_SIZE 400
36 #define MV643XX_TX_COAL 100
38 #define MV643XX_RX_COAL 100
41 #ifdef MV643XX_CHECKSUM_OFFLOAD_TX
42 #define MAX_DESCS_PER_SKB (MAX_SKB_FRAGS + 1)
44 #define MAX_DESCS_PER_SKB 1
47 #define ETH_VLAN_HLEN 4
49 #define ETH_HW_IP_ALIGN 2 /* hw aligns IP header */
50 #define ETH_WRAPPER_LEN (ETH_HW_IP_ALIGN + ETH_HLEN + \
51 ETH_VLAN_HLEN + ETH_FCS_LEN)
52 #define ETH_RX_SKB_SIZE (dev->mtu + ETH_WRAPPER_LEN + \
53 dma_get_cache_alignment())
56 * Registers shared between all ports.
58 #define PHY_ADDR_REG 0x0000
59 #define SMI_REG 0x0004
65 #define PORT_CONFIG_REG(p) (0x0400 + ((p) << 10))
66 #define PORT_CONFIG_EXTEND_REG(p) (0x0404 + ((p) << 10))
67 #define MAC_ADDR_LOW(p) (0x0414 + ((p) << 10))
68 #define MAC_ADDR_HIGH(p) (0x0418 + ((p) << 10))
69 #define SDMA_CONFIG_REG(p) (0x041c + ((p) << 10))
70 #define PORT_SERIAL_CONTROL_REG(p) (0x043c + ((p) << 10))
71 #define PORT_STATUS_REG(p) (0x0444 + ((p) << 10))
72 #define TRANSMIT_QUEUE_COMMAND_REG(p) (0x0448 + ((p) << 10))
73 #define MAXIMUM_TRANSMIT_UNIT(p) (0x0458 + ((p) << 10))
74 #define INTERRUPT_CAUSE_REG(p) (0x0460 + ((p) << 10))
75 #define INTERRUPT_CAUSE_EXTEND_REG(p) (0x0464 + ((p) << 10))
76 #define INTERRUPT_MASK_REG(p) (0x0468 + ((p) << 10))
77 #define INTERRUPT_EXTEND_MASK_REG(p) (0x046c + ((p) << 10))
78 #define TX_FIFO_URGENT_THRESHOLD_REG(p) (0x0474 + ((p) << 10))
79 #define RX_CURRENT_QUEUE_DESC_PTR_0(p) (0x060c + ((p) << 10))
80 #define RECEIVE_QUEUE_COMMAND_REG(p) (0x0680 + ((p) << 10))
81 #define TX_CURRENT_QUEUE_DESC_PTR_0(p) (0x06c0 + ((p) << 10))
82 #define MIB_COUNTERS_BASE(p) (0x1000 + ((p) << 7))
83 #define DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE(p) (0x1400 + ((p) << 10))
84 #define DA_FILTER_OTHER_MULTICAST_TABLE_BASE(p) (0x1500 + ((p) << 10))
85 #define DA_FILTER_UNICAST_TABLE_BASE(p) (0x1600 + ((p) << 10))
87 /* These macros describe Ethernet Port configuration reg (Px_cR) bits */
88 #define UNICAST_NORMAL_MODE (0 << 0)
89 #define UNICAST_PROMISCUOUS_MODE (1 << 0)
90 #define DEFAULT_RX_QUEUE(queue) ((queue) << 1)
91 #define DEFAULT_RX_ARP_QUEUE(queue) ((queue) << 4)
92 #define RECEIVE_BC_IF_NOT_IP_OR_ARP (0 << 7)
93 #define REJECT_BC_IF_NOT_IP_OR_ARP (1 << 7)
94 #define RECEIVE_BC_IF_IP (0 << 8)
95 #define REJECT_BC_IF_IP (1 << 8)
96 #define RECEIVE_BC_IF_ARP (0 << 9)
97 #define REJECT_BC_IF_ARP (1 << 9)
98 #define TX_AM_NO_UPDATE_ERROR_SUMMARY (1 << 12)
99 #define CAPTURE_TCP_FRAMES_DIS (0 << 14)
100 #define CAPTURE_TCP_FRAMES_EN (1 << 14)
101 #define CAPTURE_UDP_FRAMES_DIS (0 << 15)
102 #define CAPTURE_UDP_FRAMES_EN (1 << 15)
103 #define DEFAULT_RX_TCP_QUEUE(queue) ((queue) << 16)
104 #define DEFAULT_RX_UDP_QUEUE(queue) ((queue) << 19)
105 #define DEFAULT_RX_BPDU_QUEUE(queue) ((queue) << 22)
107 #define PORT_CONFIG_DEFAULT_VALUE \
108 UNICAST_NORMAL_MODE | \
109 DEFAULT_RX_QUEUE(0) | \
110 DEFAULT_RX_ARP_QUEUE(0) | \
111 RECEIVE_BC_IF_NOT_IP_OR_ARP | \
113 RECEIVE_BC_IF_ARP | \
114 CAPTURE_TCP_FRAMES_DIS | \
115 CAPTURE_UDP_FRAMES_DIS | \
116 DEFAULT_RX_TCP_QUEUE(0) | \
117 DEFAULT_RX_UDP_QUEUE(0) | \
118 DEFAULT_RX_BPDU_QUEUE(0)
120 /* These macros describe Ethernet Port configuration extend reg (Px_cXR) bits*/
121 #define CLASSIFY_EN (1 << 0)
122 #define SPAN_BPDU_PACKETS_AS_NORMAL (0 << 1)
123 #define SPAN_BPDU_PACKETS_TO_RX_QUEUE_7 (1 << 1)
124 #define PARTITION_DISABLE (0 << 2)
125 #define PARTITION_ENABLE (1 << 2)
127 #define PORT_CONFIG_EXTEND_DEFAULT_VALUE \
128 SPAN_BPDU_PACKETS_AS_NORMAL | \
131 /* These macros describe Ethernet Port Sdma configuration reg (SDCR) bits */
132 #define RIFB (1 << 0)
133 #define RX_BURST_SIZE_1_64BIT (0 << 1)
134 #define RX_BURST_SIZE_2_64BIT (1 << 1)
135 #define RX_BURST_SIZE_4_64BIT (2 << 1)
136 #define RX_BURST_SIZE_8_64BIT (3 << 1)
137 #define RX_BURST_SIZE_16_64BIT (4 << 1)
138 #define BLM_RX_NO_SWAP (1 << 4)
139 #define BLM_RX_BYTE_SWAP (0 << 4)
140 #define BLM_TX_NO_SWAP (1 << 5)
141 #define BLM_TX_BYTE_SWAP (0 << 5)
142 #define DESCRIPTORS_BYTE_SWAP (1 << 6)
143 #define DESCRIPTORS_NO_SWAP (0 << 6)
144 #define IPG_INT_RX(value) (((value) & 0x3fff) << 8)
145 #define TX_BURST_SIZE_1_64BIT (0 << 22)
146 #define TX_BURST_SIZE_2_64BIT (1 << 22)
147 #define TX_BURST_SIZE_4_64BIT (2 << 22)
148 #define TX_BURST_SIZE_8_64BIT (3 << 22)
149 #define TX_BURST_SIZE_16_64BIT (4 << 22)
151 #if defined(__BIG_ENDIAN)
152 #define PORT_SDMA_CONFIG_DEFAULT_VALUE \
153 RX_BURST_SIZE_4_64BIT | \
155 TX_BURST_SIZE_4_64BIT
156 #elif defined(__LITTLE_ENDIAN)
157 #define PORT_SDMA_CONFIG_DEFAULT_VALUE \
158 RX_BURST_SIZE_4_64BIT | \
162 TX_BURST_SIZE_4_64BIT
164 #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
167 /* These macros describe Ethernet Port serial control reg (PSCR) bits */
168 #define SERIAL_PORT_DISABLE (0 << 0)
169 #define SERIAL_PORT_ENABLE (1 << 0)
170 #define DO_NOT_FORCE_LINK_PASS (0 << 1)
171 #define FORCE_LINK_PASS (1 << 1)
172 #define ENABLE_AUTO_NEG_FOR_DUPLX (0 << 2)
173 #define DISABLE_AUTO_NEG_FOR_DUPLX (1 << 2)
174 #define ENABLE_AUTO_NEG_FOR_FLOW_CTRL (0 << 3)
175 #define DISABLE_AUTO_NEG_FOR_FLOW_CTRL (1 << 3)
176 #define ADV_NO_FLOW_CTRL (0 << 4)
177 #define ADV_SYMMETRIC_FLOW_CTRL (1 << 4)
178 #define FORCE_FC_MODE_NO_PAUSE_DIS_TX (0 << 5)
179 #define FORCE_FC_MODE_TX_PAUSE_DIS (1 << 5)
180 #define FORCE_BP_MODE_NO_JAM (0 << 7)
181 #define FORCE_BP_MODE_JAM_TX (1 << 7)
182 #define FORCE_BP_MODE_JAM_TX_ON_RX_ERR (2 << 7)
183 #define SERIAL_PORT_CONTROL_RESERVED (1 << 9)
184 #define FORCE_LINK_FAIL (0 << 10)
185 #define DO_NOT_FORCE_LINK_FAIL (1 << 10)
186 #define RETRANSMIT_16_ATTEMPTS (0 << 11)
187 #define RETRANSMIT_FOREVER (1 << 11)
188 #define ENABLE_AUTO_NEG_SPEED_GMII (0 << 13)
189 #define DISABLE_AUTO_NEG_SPEED_GMII (1 << 13)
190 #define DTE_ADV_0 (0 << 14)
191 #define DTE_ADV_1 (1 << 14)
192 #define DISABLE_AUTO_NEG_BYPASS (0 << 15)
193 #define ENABLE_AUTO_NEG_BYPASS (1 << 15)
194 #define AUTO_NEG_NO_CHANGE (0 << 16)
195 #define RESTART_AUTO_NEG (1 << 16)
196 #define MAX_RX_PACKET_1518BYTE (0 << 17)
197 #define MAX_RX_PACKET_1522BYTE (1 << 17)
198 #define MAX_RX_PACKET_1552BYTE (2 << 17)
199 #define MAX_RX_PACKET_9022BYTE (3 << 17)
200 #define MAX_RX_PACKET_9192BYTE (4 << 17)
201 #define MAX_RX_PACKET_9700BYTE (5 << 17)
202 #define MAX_RX_PACKET_MASK (7 << 17)
203 #define CLR_EXT_LOOPBACK (0 << 20)
204 #define SET_EXT_LOOPBACK (1 << 20)
205 #define SET_HALF_DUPLEX_MODE (0 << 21)
206 #define SET_FULL_DUPLEX_MODE (1 << 21)
207 #define DISABLE_FLOW_CTRL_TX_RX_IN_FULL_DUPLEX (0 << 22)
208 #define ENABLE_FLOW_CTRL_TX_RX_IN_FULL_DUPLEX (1 << 22)
209 #define SET_GMII_SPEED_TO_10_100 (0 << 23)
210 #define SET_GMII_SPEED_TO_1000 (1 << 23)
211 #define SET_MII_SPEED_TO_10 (0 << 24)
212 #define SET_MII_SPEED_TO_100 (1 << 24)
214 #define PORT_SERIAL_CONTROL_DEFAULT_VALUE \
215 DO_NOT_FORCE_LINK_PASS | \
216 ENABLE_AUTO_NEG_FOR_DUPLX | \
217 DISABLE_AUTO_NEG_FOR_FLOW_CTRL | \
218 ADV_SYMMETRIC_FLOW_CTRL | \
219 FORCE_FC_MODE_NO_PAUSE_DIS_TX | \
220 FORCE_BP_MODE_NO_JAM | \
221 (1 << 9) /* reserved */ | \
222 DO_NOT_FORCE_LINK_FAIL | \
223 RETRANSMIT_16_ATTEMPTS | \
224 ENABLE_AUTO_NEG_SPEED_GMII | \
226 DISABLE_AUTO_NEG_BYPASS | \
227 AUTO_NEG_NO_CHANGE | \
228 MAX_RX_PACKET_9700BYTE | \
230 SET_FULL_DUPLEX_MODE | \
231 ENABLE_FLOW_CTRL_TX_RX_IN_FULL_DUPLEX
233 /* These macros describe Ethernet Serial Status reg (PSR) bits */
234 #define PORT_STATUS_MODE_10_BIT (1 << 0)
235 #define PORT_STATUS_LINK_UP (1 << 1)
236 #define PORT_STATUS_FULL_DUPLEX (1 << 2)
237 #define PORT_STATUS_FLOW_CONTROL (1 << 3)
238 #define PORT_STATUS_GMII_1000 (1 << 4)
239 #define PORT_STATUS_MII_100 (1 << 5)
240 /* PSR bit 6 is undocumented */
241 #define PORT_STATUS_TX_IN_PROGRESS (1 << 7)
242 #define PORT_STATUS_AUTONEG_BYPASSED (1 << 8)
243 #define PORT_STATUS_PARTITION (1 << 9)
244 #define PORT_STATUS_TX_FIFO_EMPTY (1 << 10)
245 /* PSR bits 11-31 are reserved */
247 #define PORT_DEFAULT_TRANSMIT_QUEUE_SIZE 800
248 #define PORT_DEFAULT_RECEIVE_QUEUE_SIZE 400
252 #define ETH_RX_QUEUES_ENABLED (1 << 0) /* use only Q0 for receive */
253 #define ETH_TX_QUEUES_ENABLED (1 << 0) /* use only Q0 for transmit */
255 #define ETH_INT_CAUSE_RX_DONE (ETH_RX_QUEUES_ENABLED << 2)
256 #define ETH_INT_CAUSE_RX_ERROR (ETH_RX_QUEUES_ENABLED << 9)
257 #define ETH_INT_CAUSE_RX (ETH_INT_CAUSE_RX_DONE | ETH_INT_CAUSE_RX_ERROR)
258 #define ETH_INT_CAUSE_EXT 0x00000002
259 #define ETH_INT_UNMASK_ALL (ETH_INT_CAUSE_RX | ETH_INT_CAUSE_EXT)
261 #define ETH_INT_CAUSE_TX_DONE (ETH_TX_QUEUES_ENABLED << 0)
262 #define ETH_INT_CAUSE_TX_ERROR (ETH_TX_QUEUES_ENABLED << 8)
263 #define ETH_INT_CAUSE_TX (ETH_INT_CAUSE_TX_DONE | ETH_INT_CAUSE_TX_ERROR)
264 #define ETH_INT_CAUSE_PHY 0x00010000
265 #define ETH_INT_CAUSE_STATE 0x00100000
266 #define ETH_INT_UNMASK_ALL_EXT (ETH_INT_CAUSE_TX | ETH_INT_CAUSE_PHY | \
269 #define ETH_INT_MASK_ALL 0x00000000
270 #define ETH_INT_MASK_ALL_EXT 0x00000000
272 #define PHY_WAIT_ITERATIONS 1000 /* 1000 iterations * 10uS = 10mS max */
273 #define PHY_WAIT_MICRO_SECONDS 10
275 /* Buffer offset from buffer pointer */
276 #define RX_BUF_OFFSET 0x2
278 /* Gigabit Ethernet Unit Global Registers */
280 /* MIB Counters register definitions */
281 #define ETH_MIB_GOOD_OCTETS_RECEIVED_LOW 0x0
282 #define ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH 0x4
283 #define ETH_MIB_BAD_OCTETS_RECEIVED 0x8
284 #define ETH_MIB_INTERNAL_MAC_TRANSMIT_ERR 0xc
285 #define ETH_MIB_GOOD_FRAMES_RECEIVED 0x10
286 #define ETH_MIB_BAD_FRAMES_RECEIVED 0x14
287 #define ETH_MIB_BROADCAST_FRAMES_RECEIVED 0x18
288 #define ETH_MIB_MULTICAST_FRAMES_RECEIVED 0x1c
289 #define ETH_MIB_FRAMES_64_OCTETS 0x20
290 #define ETH_MIB_FRAMES_65_TO_127_OCTETS 0x24
291 #define ETH_MIB_FRAMES_128_TO_255_OCTETS 0x28
292 #define ETH_MIB_FRAMES_256_TO_511_OCTETS 0x2c
293 #define ETH_MIB_FRAMES_512_TO_1023_OCTETS 0x30
294 #define ETH_MIB_FRAMES_1024_TO_MAX_OCTETS 0x34
295 #define ETH_MIB_GOOD_OCTETS_SENT_LOW 0x38
296 #define ETH_MIB_GOOD_OCTETS_SENT_HIGH 0x3c
297 #define ETH_MIB_GOOD_FRAMES_SENT 0x40
298 #define ETH_MIB_EXCESSIVE_COLLISION 0x44
299 #define ETH_MIB_MULTICAST_FRAMES_SENT 0x48
300 #define ETH_MIB_BROADCAST_FRAMES_SENT 0x4c
301 #define ETH_MIB_UNREC_MAC_CONTROL_RECEIVED 0x50
302 #define ETH_MIB_FC_SENT 0x54
303 #define ETH_MIB_GOOD_FC_RECEIVED 0x58
304 #define ETH_MIB_BAD_FC_RECEIVED 0x5c
305 #define ETH_MIB_UNDERSIZE_RECEIVED 0x60
306 #define ETH_MIB_FRAGMENTS_RECEIVED 0x64
307 #define ETH_MIB_OVERSIZE_RECEIVED 0x68
308 #define ETH_MIB_JABBER_RECEIVED 0x6c
309 #define ETH_MIB_MAC_RECEIVE_ERROR 0x70
310 #define ETH_MIB_BAD_CRC_EVENT 0x74
311 #define ETH_MIB_COLLISION 0x78
312 #define ETH_MIB_LATE_COLLISION 0x7c
314 /* Port serial status reg (PSR) */
315 #define ETH_INTERFACE_PCM 0x00000001
316 #define ETH_LINK_IS_UP 0x00000002
317 #define ETH_PORT_AT_FULL_DUPLEX 0x00000004
318 #define ETH_RX_FLOW_CTRL_ENABLED 0x00000008
319 #define ETH_GMII_SPEED_1000 0x00000010
320 #define ETH_MII_SPEED_100 0x00000020
321 #define ETH_TX_IN_PROGRESS 0x00000080
322 #define ETH_BYPASS_ACTIVE 0x00000100
323 #define ETH_PORT_AT_PARTITION_STATE 0x00000200
324 #define ETH_PORT_TX_FIFO_EMPTY 0x00000400
327 #define ETH_SMI_BUSY 0x10000000 /* 0 - Write, 1 - Read */
328 #define ETH_SMI_READ_VALID 0x08000000 /* 0 - Write, 1 - Read */
329 #define ETH_SMI_OPCODE_WRITE 0 /* Completion of Read */
330 #define ETH_SMI_OPCODE_READ 0x04000000 /* Operation is in progress */
332 /* Interrupt Cause Register Bit Definitions */
334 /* SDMA command status fields macros */
336 /* Tx & Rx descriptors status */
337 #define ETH_ERROR_SUMMARY 0x00000001
339 /* Tx & Rx descriptors command */
340 #define ETH_BUFFER_OWNED_BY_DMA 0x80000000
342 /* Tx descriptors status */
343 #define ETH_LC_ERROR 0
344 #define ETH_UR_ERROR 0x00000002
345 #define ETH_RL_ERROR 0x00000004
346 #define ETH_LLC_SNAP_FORMAT 0x00000200
348 /* Rx descriptors status */
349 #define ETH_OVERRUN_ERROR 0x00000002
350 #define ETH_MAX_FRAME_LENGTH_ERROR 0x00000004
351 #define ETH_RESOURCE_ERROR 0x00000006
352 #define ETH_VLAN_TAGGED 0x00080000
353 #define ETH_BPDU_FRAME 0x00100000
354 #define ETH_UDP_FRAME_OVER_IP_V_4 0x00200000
355 #define ETH_OTHER_FRAME_TYPE 0x00400000
356 #define ETH_LAYER_2_IS_ETH_V_2 0x00800000
357 #define ETH_FRAME_TYPE_IP_V_4 0x01000000
358 #define ETH_FRAME_HEADER_OK 0x02000000
359 #define ETH_RX_LAST_DESC 0x04000000
360 #define ETH_RX_FIRST_DESC 0x08000000
361 #define ETH_UNKNOWN_DESTINATION_ADDR 0x10000000
362 #define ETH_RX_ENABLE_INTERRUPT 0x20000000
363 #define ETH_LAYER_4_CHECKSUM_OK 0x40000000
365 /* Rx descriptors byte count */
366 #define ETH_FRAME_FRAGMENTED 0x00000004
368 /* Tx descriptors command */
369 #define ETH_LAYER_4_CHECKSUM_FIRST_DESC 0x00000400
370 #define ETH_FRAME_SET_TO_VLAN 0x00008000
371 #define ETH_UDP_FRAME 0x00010000
372 #define ETH_GEN_TCP_UDP_CHECKSUM 0x00020000
373 #define ETH_GEN_IP_V_4_CHECKSUM 0x00040000
374 #define ETH_ZERO_PADDING 0x00080000
375 #define ETH_TX_LAST_DESC 0x00100000
376 #define ETH_TX_FIRST_DESC 0x00200000
377 #define ETH_GEN_CRC 0x00400000
378 #define ETH_TX_ENABLE_INTERRUPT 0x00800000
379 #define ETH_AUTO_MODE 0x40000000
381 #define ETH_TX_IHL_SHIFT 11
385 typedef enum _eth_func_ret_status {
386 ETH_OK, /* Returned as expected. */
387 ETH_ERROR, /* Fundamental error. */
388 ETH_RETRY, /* Could not process request. Try later.*/
389 ETH_END_OF_JOB, /* Ring has nothing to process. */
390 ETH_QUEUE_FULL, /* Ring resource error. */
391 ETH_QUEUE_LAST_RESOURCE /* Ring resources about to exhaust. */
392 } ETH_FUNC_RET_STATUS;
394 typedef enum _eth_target {
402 /* These are for big-endian machines. Little endian needs different
405 #if defined(__BIG_ENDIAN)
407 u16 byte_cnt; /* Descriptor buffer byte count */
408 u16 buf_size; /* Buffer size */
409 u32 cmd_sts; /* Descriptor command status */
410 u32 next_desc_ptr; /* Next descriptor pointer */
411 u32 buf_ptr; /* Descriptor buffer pointer */
415 u16 byte_cnt; /* buffer byte count */
416 u16 l4i_chk; /* CPU provided TCP checksum */
417 u32 cmd_sts; /* Command/status field */
418 u32 next_desc_ptr; /* Pointer to next descriptor */
419 u32 buf_ptr; /* pointer to buffer for this descriptor*/
421 #elif defined(__LITTLE_ENDIAN)
423 u32 cmd_sts; /* Descriptor command status */
424 u16 buf_size; /* Buffer size */
425 u16 byte_cnt; /* Descriptor buffer byte count */
426 u32 buf_ptr; /* Descriptor buffer pointer */
427 u32 next_desc_ptr; /* Next descriptor pointer */
431 u32 cmd_sts; /* Command/status field */
432 u16 l4i_chk; /* CPU provided TCP checksum */
433 u16 byte_cnt; /* buffer byte count */
434 u32 buf_ptr; /* pointer to buffer for this descriptor*/
435 u32 next_desc_ptr; /* Pointer to next descriptor */
438 #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
441 /* Unified struct for Rx and Tx operations. The user is not required to */
442 /* be familier with neither Tx nor Rx descriptors. */
444 unsigned short byte_cnt; /* Descriptor buffer byte count */
445 unsigned short l4i_chk; /* Tx CPU provided TCP Checksum */
446 unsigned int cmd_sts; /* Descriptor command status */
447 dma_addr_t buf_ptr; /* Descriptor buffer pointer */
448 struct sk_buff *return_info; /* User resource return information */
451 /* Ethernet port specific information */
452 struct mv643xx_mib_counters {
453 u64 good_octets_received;
454 u32 bad_octets_received;
455 u32 internal_mac_transmit_err;
456 u32 good_frames_received;
457 u32 bad_frames_received;
458 u32 broadcast_frames_received;
459 u32 multicast_frames_received;
460 u32 frames_64_octets;
461 u32 frames_65_to_127_octets;
462 u32 frames_128_to_255_octets;
463 u32 frames_256_to_511_octets;
464 u32 frames_512_to_1023_octets;
465 u32 frames_1024_to_max_octets;
466 u64 good_octets_sent;
467 u32 good_frames_sent;
468 u32 excessive_collision;
469 u32 multicast_frames_sent;
470 u32 broadcast_frames_sent;
471 u32 unrec_mac_control_received;
473 u32 good_fc_received;
475 u32 undersize_received;
476 u32 fragments_received;
477 u32 oversize_received;
479 u32 mac_receive_error;
485 struct mv643xx_private {
486 int port_num; /* User Ethernet port number */
488 u32 rx_sram_addr; /* Base address of rx sram area */
489 u32 rx_sram_size; /* Size of rx sram area */
490 u32 tx_sram_addr; /* Base address of tx sram area */
491 u32 tx_sram_size; /* Size of tx sram area */
493 int rx_resource_err; /* Rx ring resource error flag */
495 /* Tx/Rx rings managment indexes fields. For driver use */
497 /* Next available and first returning Rx resource */
498 int rx_curr_desc_q, rx_used_desc_q;
500 /* Next available and first returning Tx resource */
501 int tx_curr_desc_q, tx_used_desc_q;
503 #ifdef MV643XX_TX_FAST_REFILL
504 u32 tx_clean_threshold;
507 struct eth_rx_desc *p_rx_desc_area;
508 dma_addr_t rx_desc_dma;
509 int rx_desc_area_size;
510 struct sk_buff **rx_skb;
512 struct eth_tx_desc *p_tx_desc_area;
513 dma_addr_t tx_desc_dma;
514 int tx_desc_area_size;
515 struct sk_buff **tx_skb;
517 struct work_struct tx_timeout_task;
519 struct net_device *dev;
520 struct napi_struct napi;
521 struct net_device_stats stats;
522 struct mv643xx_mib_counters mib_counters;
524 /* Size of Tx Ring per queue */
526 /* Number of tx descriptors in use */
528 /* Size of Rx Ring per queue */
530 /* Number of rx descriptors in use */
534 * Used in case RX Ring is empty, which can be caused when
535 * system does not have resources (skb's)
537 struct timer_list timeout;
541 struct mii_if_info mii;
544 /* Port operation control routines */
545 static void eth_port_init(struct mv643xx_private *mp);
546 static void eth_port_reset(unsigned int eth_port_num);
547 static void eth_port_start(struct net_device *dev);
549 /* PHY and MIB routines */
550 static void ethernet_phy_reset(unsigned int eth_port_num);
552 static void eth_port_write_smi_reg(unsigned int eth_port_num,
553 unsigned int phy_reg, unsigned int value);
555 static void eth_port_read_smi_reg(unsigned int eth_port_num,
556 unsigned int phy_reg, unsigned int *value);
558 static void eth_clear_mib_counters(unsigned int eth_port_num);
560 /* Port data flow control routines */
561 static ETH_FUNC_RET_STATUS eth_port_receive(struct mv643xx_private *mp,
562 struct pkt_info *p_pkt_info);
563 static ETH_FUNC_RET_STATUS eth_rx_return_buff(struct mv643xx_private *mp,
564 struct pkt_info *p_pkt_info);