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>
9 #include <linux/mv643xx.h>
11 #define BIT0 0x00000001
12 #define BIT1 0x00000002
13 #define BIT2 0x00000004
14 #define BIT3 0x00000008
15 #define BIT4 0x00000010
16 #define BIT5 0x00000020
17 #define BIT6 0x00000040
18 #define BIT7 0x00000080
19 #define BIT8 0x00000100
20 #define BIT9 0x00000200
21 #define BIT10 0x00000400
22 #define BIT11 0x00000800
23 #define BIT12 0x00001000
24 #define BIT13 0x00002000
25 #define BIT14 0x00004000
26 #define BIT15 0x00008000
27 #define BIT16 0x00010000
28 #define BIT17 0x00020000
29 #define BIT18 0x00040000
30 #define BIT19 0x00080000
31 #define BIT20 0x00100000
32 #define BIT21 0x00200000
33 #define BIT22 0x00400000
34 #define BIT23 0x00800000
35 #define BIT24 0x01000000
36 #define BIT25 0x02000000
37 #define BIT26 0x04000000
38 #define BIT27 0x08000000
39 #define BIT28 0x10000000
40 #define BIT29 0x20000000
41 #define BIT30 0x40000000
42 #define BIT31 0x80000000
45 * The first part is the high level driver of the gigE ethernet ports.
48 /* Checksum offload for Tx works for most packets, but
49 * fails if previous packet sent did not use hw csum
51 #define MV643XX_CHECKSUM_OFFLOAD_TX
53 #define MV643XX_TX_FAST_REFILL
54 #undef MV643XX_RX_QUEUE_FILL_ON_TASK /* Does not work, yet */
58 * Number of RX / TX descriptors on RX / TX rings.
59 * Note that allocating RX descriptors is done by allocating the RX
60 * ring AND a preallocated RX buffers (skb's) for each descriptor.
61 * The TX descriptors only allocates the TX descriptors ring,
62 * with no pre allocated TX buffers (skb's are allocated by higher layers.
65 /* Default TX ring size is 1000 descriptors */
66 #define MV643XX_DEFAULT_TX_QUEUE_SIZE 1000
68 /* Default RX ring size is 400 descriptors */
69 #define MV643XX_DEFAULT_RX_QUEUE_SIZE 400
71 #define MV643XX_TX_COAL 100
73 #define MV643XX_RX_COAL 100
77 * The second part is the low level driver of the gigE ethernet ports.
81 * Header File for : MV-643xx network interface header
84 * This header file contains macros typedefs and function declaration for
85 * the Marvell Gig Bit Ethernet Controller.
92 /* MAC accepet/reject macros */
93 #define ACCEPT_MAC_ADDR 0
94 #define REJECT_MAC_ADDR 1
96 /* Buffer offset from buffer pointer */
97 #define RX_BUF_OFFSET 0x2
99 /* Gigabit Ethernet Unit Global Registers */
101 /* MIB Counters register definitions */
102 #define ETH_MIB_GOOD_OCTETS_RECEIVED_LOW 0x0
103 #define ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH 0x4
104 #define ETH_MIB_BAD_OCTETS_RECEIVED 0x8
105 #define ETH_MIB_INTERNAL_MAC_TRANSMIT_ERR 0xc
106 #define ETH_MIB_GOOD_FRAMES_RECEIVED 0x10
107 #define ETH_MIB_BAD_FRAMES_RECEIVED 0x14
108 #define ETH_MIB_BROADCAST_FRAMES_RECEIVED 0x18
109 #define ETH_MIB_MULTICAST_FRAMES_RECEIVED 0x1c
110 #define ETH_MIB_FRAMES_64_OCTETS 0x20
111 #define ETH_MIB_FRAMES_65_TO_127_OCTETS 0x24
112 #define ETH_MIB_FRAMES_128_TO_255_OCTETS 0x28
113 #define ETH_MIB_FRAMES_256_TO_511_OCTETS 0x2c
114 #define ETH_MIB_FRAMES_512_TO_1023_OCTETS 0x30
115 #define ETH_MIB_FRAMES_1024_TO_MAX_OCTETS 0x34
116 #define ETH_MIB_GOOD_OCTETS_SENT_LOW 0x38
117 #define ETH_MIB_GOOD_OCTETS_SENT_HIGH 0x3c
118 #define ETH_MIB_GOOD_FRAMES_SENT 0x40
119 #define ETH_MIB_EXCESSIVE_COLLISION 0x44
120 #define ETH_MIB_MULTICAST_FRAMES_SENT 0x48
121 #define ETH_MIB_BROADCAST_FRAMES_SENT 0x4c
122 #define ETH_MIB_UNREC_MAC_CONTROL_RECEIVED 0x50
123 #define ETH_MIB_FC_SENT 0x54
124 #define ETH_MIB_GOOD_FC_RECEIVED 0x58
125 #define ETH_MIB_BAD_FC_RECEIVED 0x5c
126 #define ETH_MIB_UNDERSIZE_RECEIVED 0x60
127 #define ETH_MIB_FRAGMENTS_RECEIVED 0x64
128 #define ETH_MIB_OVERSIZE_RECEIVED 0x68
129 #define ETH_MIB_JABBER_RECEIVED 0x6c
130 #define ETH_MIB_MAC_RECEIVE_ERROR 0x70
131 #define ETH_MIB_BAD_CRC_EVENT 0x74
132 #define ETH_MIB_COLLISION 0x78
133 #define ETH_MIB_LATE_COLLISION 0x7c
135 /* Port serial status reg (PSR) */
136 #define ETH_INTERFACE_GMII_MII 0
137 #define ETH_INTERFACE_PCM BIT0
138 #define ETH_LINK_IS_DOWN 0
139 #define ETH_LINK_IS_UP BIT1
140 #define ETH_PORT_AT_HALF_DUPLEX 0
141 #define ETH_PORT_AT_FULL_DUPLEX BIT2
142 #define ETH_RX_FLOW_CTRL_DISABLED 0
143 #define ETH_RX_FLOW_CTRL_ENBALED BIT3
144 #define ETH_GMII_SPEED_100_10 0
145 #define ETH_GMII_SPEED_1000 BIT4
146 #define ETH_MII_SPEED_10 0
147 #define ETH_MII_SPEED_100 BIT5
149 #define ETH_TX_IN_PROGRESS BIT7
150 #define ETH_BYPASS_NO_ACTIVE 0
151 #define ETH_BYPASS_ACTIVE BIT8
152 #define ETH_PORT_NOT_AT_PARTITION_STATE 0
153 #define ETH_PORT_AT_PARTITION_STATE BIT9
154 #define ETH_PORT_TX_FIFO_NOT_EMPTY 0
155 #define ETH_PORT_TX_FIFO_EMPTY BIT10
157 #define ETH_DEFAULT_RX_BPDU_QUEUE_3 (BIT23 | BIT22)
158 #define ETH_DEFAULT_RX_BPDU_QUEUE_4 BIT24
159 #define ETH_DEFAULT_RX_BPDU_QUEUE_5 (BIT24 | BIT22)
160 #define ETH_DEFAULT_RX_BPDU_QUEUE_6 (BIT24 | BIT23)
161 #define ETH_DEFAULT_RX_BPDU_QUEUE_7 (BIT24 | BIT23 | BIT22)
164 #define ETH_SMI_BUSY BIT28 /* 0 - Write, 1 - Read */
165 #define ETH_SMI_READ_VALID BIT27 /* 0 - Write, 1 - Read */
166 #define ETH_SMI_OPCODE_WRITE 0 /* Completion of Read operation */
167 #define ETH_SMI_OPCODE_READ BIT26 /* Operation is in progress */
169 /* SDMA command status fields macros */
171 /* Tx & Rx descriptors status */
172 #define ETH_ERROR_SUMMARY (BIT0)
174 /* Tx & Rx descriptors command */
175 #define ETH_BUFFER_OWNED_BY_DMA (BIT31)
177 /* Tx descriptors status */
178 #define ETH_LC_ERROR (0 )
179 #define ETH_UR_ERROR (BIT1 )
180 #define ETH_RL_ERROR (BIT2 )
181 #define ETH_LLC_SNAP_FORMAT (BIT9 )
183 /* Rx descriptors status */
184 #define ETH_CRC_ERROR (0 )
185 #define ETH_OVERRUN_ERROR (BIT1 )
186 #define ETH_MAX_FRAME_LENGTH_ERROR (BIT2 )
187 #define ETH_RESOURCE_ERROR ((BIT2 | BIT1))
188 #define ETH_VLAN_TAGGED (BIT19)
189 #define ETH_BPDU_FRAME (BIT20)
190 #define ETH_TCP_FRAME_OVER_IP_V_4 (0 )
191 #define ETH_UDP_FRAME_OVER_IP_V_4 (BIT21)
192 #define ETH_OTHER_FRAME_TYPE (BIT22)
193 #define ETH_LAYER_2_IS_ETH_V_2 (BIT23)
194 #define ETH_FRAME_TYPE_IP_V_4 (BIT24)
195 #define ETH_FRAME_HEADER_OK (BIT25)
196 #define ETH_RX_LAST_DESC (BIT26)
197 #define ETH_RX_FIRST_DESC (BIT27)
198 #define ETH_UNKNOWN_DESTINATION_ADDR (BIT28)
199 #define ETH_RX_ENABLE_INTERRUPT (BIT29)
200 #define ETH_LAYER_4_CHECKSUM_OK (BIT30)
202 /* Rx descriptors byte count */
203 #define ETH_FRAME_FRAGMENTED (BIT2)
205 /* Tx descriptors command */
206 #define ETH_LAYER_4_CHECKSUM_FIRST_DESC (BIT10)
207 #define ETH_FRAME_SET_TO_VLAN (BIT15)
208 #define ETH_TCP_FRAME (0 )
209 #define ETH_UDP_FRAME (BIT16)
210 #define ETH_GEN_TCP_UDP_CHECKSUM (BIT17)
211 #define ETH_GEN_IP_V_4_CHECKSUM (BIT18)
212 #define ETH_ZERO_PADDING (BIT19)
213 #define ETH_TX_LAST_DESC (BIT20)
214 #define ETH_TX_FIRST_DESC (BIT21)
215 #define ETH_GEN_CRC (BIT22)
216 #define ETH_TX_ENABLE_INTERRUPT (BIT23)
217 #define ETH_AUTO_MODE (BIT30)
219 #define ETH_TX_IHL_SHIFT 11
223 typedef enum _eth_func_ret_status {
224 ETH_OK, /* Returned as expected. */
225 ETH_ERROR, /* Fundamental error. */
226 ETH_RETRY, /* Could not process request. Try later.*/
227 ETH_END_OF_JOB, /* Ring has nothing to process. */
228 ETH_QUEUE_FULL, /* Ring resource error. */
229 ETH_QUEUE_LAST_RESOURCE /* Ring resources about to exhaust. */
230 } ETH_FUNC_RET_STATUS;
232 typedef enum _eth_target {
240 /* These are for big-endian machines. Little endian needs different
243 #if defined(__BIG_ENDIAN)
245 u16 byte_cnt; /* Descriptor buffer byte count */
246 u16 buf_size; /* Buffer size */
247 u32 cmd_sts; /* Descriptor command status */
248 u32 next_desc_ptr; /* Next descriptor pointer */
249 u32 buf_ptr; /* Descriptor buffer pointer */
253 u16 byte_cnt; /* buffer byte count */
254 u16 l4i_chk; /* CPU provided TCP checksum */
255 u32 cmd_sts; /* Command/status field */
256 u32 next_desc_ptr; /* Pointer to next descriptor */
257 u32 buf_ptr; /* pointer to buffer for this descriptor*/
260 #elif defined(__LITTLE_ENDIAN)
262 u32 cmd_sts; /* Descriptor command status */
263 u16 buf_size; /* Buffer size */
264 u16 byte_cnt; /* Descriptor buffer byte count */
265 u32 buf_ptr; /* Descriptor buffer pointer */
266 u32 next_desc_ptr; /* Next descriptor pointer */
270 u32 cmd_sts; /* Command/status field */
271 u16 l4i_chk; /* CPU provided TCP checksum */
272 u16 byte_cnt; /* buffer byte count */
273 u32 buf_ptr; /* pointer to buffer for this descriptor*/
274 u32 next_desc_ptr; /* Pointer to next descriptor */
277 #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
280 /* Unified struct for Rx and Tx operations. The user is not required to */
281 /* be familier with neither Tx nor Rx descriptors. */
283 unsigned short byte_cnt; /* Descriptor buffer byte count */
284 unsigned short l4i_chk; /* Tx CPU provided TCP Checksum */
285 unsigned int cmd_sts; /* Descriptor command status */
286 dma_addr_t buf_ptr; /* Descriptor buffer pointer */
287 struct sk_buff *return_info; /* User resource return information */
290 /* Ethernet port specific infomation */
292 struct mv643xx_mib_counters {
293 u64 good_octets_received;
294 u32 bad_octets_received;
295 u32 internal_mac_transmit_err;
296 u32 good_frames_received;
297 u32 bad_frames_received;
298 u32 broadcast_frames_received;
299 u32 multicast_frames_received;
300 u32 frames_64_octets;
301 u32 frames_65_to_127_octets;
302 u32 frames_128_to_255_octets;
303 u32 frames_256_to_511_octets;
304 u32 frames_512_to_1023_octets;
305 u32 frames_1024_to_max_octets;
306 u64 good_octets_sent;
307 u32 good_frames_sent;
308 u32 excessive_collision;
309 u32 multicast_frames_sent;
310 u32 broadcast_frames_sent;
311 u32 unrec_mac_control_received;
313 u32 good_fc_received;
315 u32 undersize_received;
316 u32 fragments_received;
317 u32 oversize_received;
319 u32 mac_receive_error;
325 struct mv643xx_private {
326 int port_num; /* User Ethernet port number */
327 u8 port_mac_addr[6]; /* User defined port MAC address.*/
328 u32 port_config; /* User port configuration value*/
329 u32 port_config_extend; /* User port config extend value*/
330 u32 port_sdma_config; /* User port SDMA config value */
331 u32 port_serial_control; /* User port serial control value */
332 u32 port_tx_queue_command; /* Port active Tx queues summary*/
333 u32 port_rx_queue_command; /* Port active Rx queues summary*/
335 u32 rx_sram_addr; /* Base address of rx sram area */
336 u32 rx_sram_size; /* Size of rx sram area */
337 u32 tx_sram_addr; /* Base address of tx sram area */
338 u32 tx_sram_size; /* Size of tx sram area */
340 int rx_resource_err; /* Rx ring resource error flag */
341 int tx_resource_err; /* Tx ring resource error flag */
343 /* Tx/Rx rings managment indexes fields. For driver use */
345 /* Next available and first returning Rx resource */
346 int rx_curr_desc_q, rx_used_desc_q;
348 /* Next available and first returning Tx resource */
349 int tx_curr_desc_q, tx_used_desc_q;
350 #ifdef MV643XX_CHECKSUM_OFFLOAD_TX
352 u32 tx_first_command;
355 #ifdef MV643XX_TX_FAST_REFILL
356 u32 tx_clean_threshold;
359 struct eth_rx_desc *p_rx_desc_area;
360 dma_addr_t rx_desc_dma;
361 unsigned int rx_desc_area_size;
362 struct sk_buff **rx_skb;
364 struct eth_tx_desc *p_tx_desc_area;
365 dma_addr_t tx_desc_dma;
366 unsigned int tx_desc_area_size;
367 struct sk_buff **tx_skb;
369 struct work_struct tx_timeout_task;
372 * Former struct mv643xx_eth_priv members start here
374 struct net_device_stats stats;
375 struct mv643xx_mib_counters mib_counters;
377 /* Size of Tx Ring per queue */
378 unsigned int tx_ring_size;
379 /* Ammont of SKBs outstanding on Tx queue */
380 unsigned int tx_ring_skbs;
381 /* Size of Rx Ring per queue */
382 unsigned int rx_ring_size;
383 /* Ammount of SKBs allocated to Rx Ring per queue */
384 unsigned int rx_ring_skbs;
387 * rx_task used to fill RX ring out of bottom half context
389 struct work_struct rx_task;
392 * Used in case RX Ring is empty, which can be caused when
393 * system does not have resources (skb's)
395 struct timer_list timeout;
396 long rx_task_busy __attribute__ ((aligned(SMP_CACHE_BYTES)));
397 unsigned rx_timer_flag;
403 /* ethernet.h API list */
405 /* Port operation control routines */
406 static void eth_port_init(struct mv643xx_private *mp);
407 static void eth_port_reset(unsigned int eth_port_num);
408 static void eth_port_start(struct mv643xx_private *mp);
410 /* Port MAC address routines */
411 static void eth_port_uc_addr_set(unsigned int eth_port_num,
412 unsigned char *p_addr);
414 /* PHY and MIB routines */
415 static void ethernet_phy_reset(unsigned int eth_port_num);
417 static void eth_port_write_smi_reg(unsigned int eth_port_num,
418 unsigned int phy_reg, unsigned int value);
420 static void eth_port_read_smi_reg(unsigned int eth_port_num,
421 unsigned int phy_reg, unsigned int *value);
423 static void eth_clear_mib_counters(unsigned int eth_port_num);
425 /* Port data flow control routines */
426 static ETH_FUNC_RET_STATUS eth_port_send(struct mv643xx_private *mp,
427 struct pkt_info *p_pkt_info);
428 static ETH_FUNC_RET_STATUS eth_tx_return_desc(struct mv643xx_private *mp,
429 struct pkt_info *p_pkt_info);
430 static ETH_FUNC_RET_STATUS eth_port_receive(struct mv643xx_private *mp,
431 struct pkt_info *p_pkt_info);
432 static ETH_FUNC_RET_STATUS eth_rx_return_buff(struct mv643xx_private *mp,
433 struct pkt_info *p_pkt_info);
435 #endif /* __MV643XX_ETH_H__ */