1 /******************************************************************************
3 ** FILE NAME : ifxmips_ptm_vdsl.c
9 ** DESCRIPTION : PTM driver common source file (core functions for VR9)
10 ** COPYRIGHT : Copyright (c) 2006
11 ** Infineon Technologies AG
12 ** Am Campeon 1-12, 85579 Neubiberg, Germany
14 ** This program is free software; you can redistribute it and/or modify
15 ** it under the terms of the GNU General Public License as published by
16 ** the Free Software Foundation; either version 2 of the License, or
17 ** (at your option) any later version.
20 ** $Date $Author $Comment
21 ** 07 JUL 2009 Xu Liang Init Version
22 *******************************************************************************/
24 #include <linux/version.h>
25 #include <linux/kernel.h>
26 #include <linux/module.h>
27 #include <linux/types.h>
28 #include <linux/ctype.h>
29 #include <linux/errno.h>
30 #include <linux/proc_fs.h>
31 #include <linux/init.h>
32 #include <linux/ioctl.h>
33 #include <linux/etherdevice.h>
34 #include <linux/interrupt.h>
35 #include <linux/netdevice.h>
37 #include "ifxmips_ptm_vdsl.h"
38 #include <lantiq_soc.h>
40 #define MODULE_PARM_ARRAY(a, b) module_param_array(a, int, NULL, 0)
41 #define MODULE_PARM(a, b) module_param(a, int, 0)
43 static int wanqos_en
= 0;
44 static int queue_gamma_map
[4] = {0xFE, 0x01, 0x00, 0x00};
46 MODULE_PARM(wanqos_en
, "i");
47 MODULE_PARM_DESC(wanqos_en
, "WAN QoS support, 1 - enabled, 0 - disabled.");
49 MODULE_PARM_ARRAY(queue_gamma_map
, "4-4i");
50 MODULE_PARM_DESC(queue_gamma_map
, "TX QoS queues mapping to 4 TX Gamma interfaces.");
52 extern int (*ifx_mei_atm_showtime_enter
)(struct port_cell_info
*, void *);
53 extern int (*ifx_mei_atm_showtime_exit
)(void);
54 extern int ifx_mei_atm_showtime_check(int *is_showtime
, struct port_cell_info
*port_cell
, void **xdata_addr
);
56 static int g_showtime
= 0;
57 static void *g_xdata_addr
= NULL
;
60 #define ENABLE_TMP_DBG 0
62 unsigned long cgu_get_pp32_clock(void)
64 struct clk
*c
= clk_get_ppe();
65 unsigned long rate
= clk_get_rate(c
);
70 static void ptm_setup(struct net_device
*, int);
71 static struct net_device_stats
*ptm_get_stats(struct net_device
*);
72 static int ptm_open(struct net_device
*);
73 static int ptm_stop(struct net_device
*);
74 static unsigned int ptm_poll(int, unsigned int);
75 static int ptm_napi_poll(struct napi_struct
*, int);
76 static int ptm_hard_start_xmit(struct sk_buff
*, struct net_device
*);
77 static int ptm_change_mtu(struct net_device
*, int);
78 static int ptm_ioctl(struct net_device
*, struct ifreq
*, int);
79 static void ptm_tx_timeout(struct net_device
*);
81 static inline struct sk_buff
* alloc_skb_rx(void);
82 static inline struct sk_buff
* alloc_skb_tx(unsigned int);
83 static inline struct sk_buff
*get_skb_pointer(unsigned int);
84 static inline int get_tx_desc(unsigned int, unsigned int *);
87 * Mailbox handler and signal function
89 static irqreturn_t
mailbox_irq_handler(int, void *);
92 * Tasklet to Handle Swap Descriptors
94 static void do_swap_desc_tasklet(unsigned long);
98 * Init & clean-up functions
100 static inline int init_priv_data(void);
101 static inline void clear_priv_data(void);
102 static inline int init_tables(void);
103 static inline void clear_tables(void);
105 static int g_wanqos_en
= 0;
107 static int g_queue_gamma_map
[4];
109 static struct ptm_priv_data g_ptm_priv_data
;
111 static struct net_device_ops g_ptm_netdev_ops
= {
112 .ndo_get_stats
= ptm_get_stats
,
113 .ndo_open
= ptm_open
,
114 .ndo_stop
= ptm_stop
,
115 .ndo_start_xmit
= ptm_hard_start_xmit
,
116 .ndo_validate_addr
= eth_validate_addr
,
117 .ndo_set_mac_address
= eth_mac_addr
,
118 .ndo_change_mtu
= ptm_change_mtu
,
119 .ndo_do_ioctl
= ptm_ioctl
,
120 .ndo_tx_timeout
= ptm_tx_timeout
,
123 static struct net_device
*g_net_dev
[1] = {0};
124 static char *g_net_dev_name
[1] = {"ptm0"};
126 static int g_ptm_prio_queue_map
[8];
128 static DECLARE_TASKLET(g_swap_desc_tasklet
, do_swap_desc_tasklet
, 0);
131 unsigned int ifx_ptm_dbg_enable
= DBG_ENABLE_MASK_ERR
;
134 * ####################################
136 * ####################################
139 static void ptm_setup(struct net_device
*dev
, int ndev
)
141 netif_carrier_off(dev
);
143 dev
->netdev_ops
= &g_ptm_netdev_ops
;
144 netif_napi_add(dev
, &g_ptm_priv_data
.itf
[ndev
].napi
, ptm_napi_poll
, 16);
145 dev
->watchdog_timeo
= ETH_WATCHDOG_TIMEOUT
;
147 dev
->dev_addr
[0] = 0x00;
148 dev
->dev_addr
[1] = 0x20;
149 dev
->dev_addr
[2] = 0xda;
150 dev
->dev_addr
[3] = 0x86;
151 dev
->dev_addr
[4] = 0x23;
152 dev
->dev_addr
[5] = 0x75 + ndev
;
155 static struct net_device_stats
*ptm_get_stats(struct net_device
*dev
)
157 struct net_device_stats
*s
;
159 if ( dev
!= g_net_dev
[0] )
161 s
= &g_ptm_priv_data
.itf
[0].stats
;
166 static int ptm_open(struct net_device
*dev
)
168 ASSERT(dev
== g_net_dev
[0], "incorrect device");
170 napi_enable(&g_ptm_priv_data
.itf
[0].napi
);
172 IFX_REG_W32_MASK(0, 1, MBOX_IGU1_IER
);
174 netif_start_queue(dev
);
179 static int ptm_stop(struct net_device
*dev
)
181 ASSERT(dev
== g_net_dev
[0], "incorrect device");
183 IFX_REG_W32_MASK(1 | (1 << 17), 0, MBOX_IGU1_IER
);
185 napi_disable(&g_ptm_priv_data
.itf
[0].napi
);
187 netif_stop_queue(dev
);
192 static unsigned int ptm_poll(int ndev
, unsigned int work_to_do
)
194 unsigned int work_done
= 0;
195 volatile struct rx_descriptor
*desc
;
196 struct rx_descriptor reg_desc
;
197 struct sk_buff
*skb
, *new_skb
;
199 ASSERT(ndev
>= 0 && ndev
< ARRAY_SIZE(g_net_dev
), "ndev = %d (wrong value)", ndev
);
201 while ( work_done
< work_to_do
) {
202 desc
= &WAN_RX_DESC_BASE
[g_ptm_priv_data
.itf
[0].rx_desc_pos
];
203 if ( desc
->own
/* || !desc->c */ ) // if PP32 hold descriptor or descriptor not completed
205 if ( ++g_ptm_priv_data
.itf
[0].rx_desc_pos
== WAN_RX_DESC_NUM
)
206 g_ptm_priv_data
.itf
[0].rx_desc_pos
= 0;
209 skb
= get_skb_pointer(reg_desc
.dataptr
);
210 ASSERT(skb
!= NULL
, "invalid pointer skb == NULL");
212 new_skb
= alloc_skb_rx();
213 if ( new_skb
!= NULL
) {
214 skb_reserve(skb
, reg_desc
.byteoff
);
215 skb_put(skb
, reg_desc
.datalen
);
217 // parse protocol header
218 skb
->dev
= g_net_dev
[0];
219 skb
->protocol
= eth_type_trans(skb
, skb
->dev
);
221 g_net_dev
[0]->last_rx
= jiffies
;
223 netif_receive_skb(skb
);
225 g_ptm_priv_data
.itf
[0].stats
.rx_packets
++;
226 g_ptm_priv_data
.itf
[0].stats
.rx_bytes
+= reg_desc
.datalen
;
228 reg_desc
.dataptr
= (unsigned int)new_skb
->data
& 0x0FFFFFFF;
229 reg_desc
.byteoff
= RX_HEAD_MAC_ADDR_ALIGNMENT
;
232 reg_desc
.datalen
= RX_MAX_BUFFER_SIZE
- RX_HEAD_MAC_ADDR_ALIGNMENT
;
236 /* write discriptor to memory */
237 *((volatile unsigned int *)desc
+ 1) = *((unsigned int *)®_desc
+ 1);
239 *(volatile unsigned int *)desc
= *(unsigned int *)®_desc
;
247 static int ptm_napi_poll(struct napi_struct
*napi
, int budget
)
250 unsigned int work_done
;
252 work_done
= ptm_poll(ndev
, budget
);
255 if ( !netif_running(napi
->dev
) ) {
261 IFX_REG_W32_MASK(0, 1, MBOX_IGU1_ISRC
);
263 if (work_done
< budget
) {
265 IFX_REG_W32_MASK(0, 1, MBOX_IGU1_IER
);
273 static int ptm_hard_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
277 volatile struct tx_descriptor
*desc
;
278 struct tx_descriptor reg_desc
= {0};
279 struct sk_buff
*skb_to_free
;
280 unsigned int byteoff
;
282 ASSERT(dev
== g_net_dev
[0], "incorrect device");
285 err("not in showtime");
286 goto PTM_HARD_START_XMIT_FAIL
;
289 /* allocate descriptor */
290 desc_base
= get_tx_desc(0, &f_full
);
292 dev
->trans_start
= jiffies
;
293 netif_stop_queue(dev
);
295 IFX_REG_W32_MASK(0, 1 << 17, MBOX_IGU1_ISRC
);
296 IFX_REG_W32_MASK(0, 1 << 17, MBOX_IGU1_IER
);
299 goto PTM_HARD_START_XMIT_FAIL
;
300 desc
= &CPU_TO_WAN_TX_DESC_BASE
[desc_base
];
302 byteoff
= (unsigned int)skb
->data
& (DATA_BUFFER_ALIGNMENT
- 1);
303 if ( skb_headroom(skb
) < sizeof(struct sk_buff
*) + byteoff
|| skb_cloned(skb
) ) {
304 struct sk_buff
*new_skb
;
306 ASSERT(skb_headroom(skb
) >= sizeof(struct sk_buff
*) + byteoff
, "skb_headroom(skb) < sizeof(struct sk_buff *) + byteoff");
307 ASSERT(!skb_cloned(skb
), "skb is cloned");
309 new_skb
= alloc_skb_tx(skb
->len
);
310 if ( new_skb
== NULL
) {
312 goto ALLOC_SKB_TX_FAIL
;
314 skb_put(new_skb
, skb
->len
);
315 memcpy(new_skb
->data
, skb
->data
, skb
->len
);
316 dev_kfree_skb_any(skb
);
318 byteoff
= (unsigned int)skb
->data
& (DATA_BUFFER_ALIGNMENT
- 1);
319 /* write back to physical memory */
320 dma_cache_wback((unsigned long)skb
->data
, skb
->len
);
323 *(struct sk_buff
**)((unsigned int)skb
->data
- byteoff
- sizeof(struct sk_buff
*)) = skb
;
324 /* write back to physical memory */
325 dma_cache_wback((unsigned long)skb
->data
- byteoff
- sizeof(struct sk_buff
*), skb
->len
+ byteoff
+ sizeof(struct sk_buff
*));
327 /* free previous skb */
328 skb_to_free
= get_skb_pointer(desc
->dataptr
);
329 if ( skb_to_free
!= NULL
)
330 dev_kfree_skb_any(skb_to_free
);
332 /* update descriptor */
334 reg_desc
.dataptr
= (unsigned int)skb
->data
& (0x0FFFFFFF ^ (DATA_BUFFER_ALIGNMENT
- 1));
335 reg_desc
.datalen
= skb
->len
< ETH_ZLEN
? ETH_ZLEN
: skb
->len
;
336 reg_desc
.qid
= g_ptm_prio_queue_map
[skb
->priority
> 7 ? 7 : skb
->priority
];
337 reg_desc
.byteoff
= byteoff
;
340 reg_desc
.sop
= reg_desc
.eop
= 1;
343 g_ptm_priv_data
.itf
[0].stats
.tx_packets
++;
344 g_ptm_priv_data
.itf
[0].stats
.tx_bytes
+= reg_desc
.datalen
;
346 /* write discriptor to memory */
347 *((volatile unsigned int *)desc
+ 1) = *((unsigned int *)®_desc
+ 1);
349 *(volatile unsigned int *)desc
= *(unsigned int *)®_desc
;
351 dev
->trans_start
= jiffies
;
356 PTM_HARD_START_XMIT_FAIL
:
357 dev_kfree_skb_any(skb
);
358 g_ptm_priv_data
.itf
[0].stats
.tx_dropped
++;
362 static int ptm_change_mtu(struct net_device
*dev
, int mtu
)
364 /* Allow up to 1508 bytes, for RFC4638 */
365 if (mtu
< 68 || mtu
> ETH_DATA_LEN
+ 8)
371 static int ptm_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
373 ASSERT(dev
== g_net_dev
[0], "incorrect device");
377 case IFX_PTM_MIB_CW_GET
:
378 ((PTM_CW_IF_ENTRY_T
*)ifr
->ifr_data
)->ifRxNoIdleCodewords
= IFX_REG_R32(DREG_AR_CELL0
) + IFX_REG_R32(DREG_AR_CELL1
);
379 ((PTM_CW_IF_ENTRY_T
*)ifr
->ifr_data
)->ifRxIdleCodewords
= IFX_REG_R32(DREG_AR_IDLE_CNT0
) + IFX_REG_R32(DREG_AR_IDLE_CNT1
);
380 ((PTM_CW_IF_ENTRY_T
*)ifr
->ifr_data
)->ifRxCodingViolation
= IFX_REG_R32(DREG_AR_CVN_CNT0
) + IFX_REG_R32(DREG_AR_CVN_CNT1
) + IFX_REG_R32(DREG_AR_CVNP_CNT0
) + IFX_REG_R32(DREG_AR_CVNP_CNT1
);
381 ((PTM_CW_IF_ENTRY_T
*)ifr
->ifr_data
)->ifTxNoIdleCodewords
= IFX_REG_R32(DREG_AT_CELL0
) + IFX_REG_R32(DREG_AT_CELL1
);
382 ((PTM_CW_IF_ENTRY_T
*)ifr
->ifr_data
)->ifTxIdleCodewords
= IFX_REG_R32(DREG_AT_IDLE_CNT0
) + IFX_REG_R32(DREG_AT_IDLE_CNT1
);
384 case IFX_PTM_MIB_FRAME_GET
:
386 PTM_FRAME_MIB_T data
= {0};
389 data
.RxCorrect
= IFX_REG_R32(DREG_AR_HEC_CNT0
) + IFX_REG_R32(DREG_AR_HEC_CNT1
) + IFX_REG_R32(DREG_AR_AIIDLE_CNT0
) + IFX_REG_R32(DREG_AR_AIIDLE_CNT1
);
390 for ( i
= 0; i
< 4; i
++ )
391 data
.RxDropped
+= WAN_RX_MIB_TABLE(i
)->wrx_dropdes_pdu
;
392 for ( i
= 0; i
< 8; i
++ )
393 data
.TxSend
+= WAN_TX_MIB_TABLE(i
)->wtx_total_pdu
;
395 *((PTM_FRAME_MIB_T
*)ifr
->ifr_data
) = data
;
398 case IFX_PTM_CFG_GET
:
399 // use bear channel 0 preemption gamma interface settings
400 ((IFX_PTM_CFG_T
*)ifr
->ifr_data
)->RxEthCrcPresent
= 1;
401 ((IFX_PTM_CFG_T
*)ifr
->ifr_data
)->RxEthCrcCheck
= RX_GAMMA_ITF_CFG(0)->rx_eth_fcs_ver_dis
== 0 ? 1 : 0;
402 ((IFX_PTM_CFG_T
*)ifr
->ifr_data
)->RxTcCrcCheck
= RX_GAMMA_ITF_CFG(0)->rx_tc_crc_ver_dis
== 0 ? 1 : 0;;
403 ((IFX_PTM_CFG_T
*)ifr
->ifr_data
)->RxTcCrcLen
= RX_GAMMA_ITF_CFG(0)->rx_tc_crc_size
== 0 ? 0 : (RX_GAMMA_ITF_CFG(0)->rx_tc_crc_size
* 16);
404 ((IFX_PTM_CFG_T
*)ifr
->ifr_data
)->TxEthCrcGen
= TX_GAMMA_ITF_CFG(0)->tx_eth_fcs_gen_dis
== 0 ? 1 : 0;
405 ((IFX_PTM_CFG_T
*)ifr
->ifr_data
)->TxTcCrcGen
= TX_GAMMA_ITF_CFG(0)->tx_tc_crc_size
== 0 ? 0 : 1;
406 ((IFX_PTM_CFG_T
*)ifr
->ifr_data
)->TxTcCrcLen
= TX_GAMMA_ITF_CFG(0)->tx_tc_crc_size
== 0 ? 0 : (TX_GAMMA_ITF_CFG(0)->tx_tc_crc_size
* 16);
408 case IFX_PTM_CFG_SET
:
412 for ( i
= 0; i
< 4; i
++ ) {
413 RX_GAMMA_ITF_CFG(i
)->rx_eth_fcs_ver_dis
= ((IFX_PTM_CFG_T
*)ifr
->ifr_data
)->RxEthCrcCheck
? 0 : 1;
415 RX_GAMMA_ITF_CFG(0)->rx_tc_crc_ver_dis
= ((IFX_PTM_CFG_T
*)ifr
->ifr_data
)->RxTcCrcCheck
? 0 : 1;
417 switch ( ((IFX_PTM_CFG_T
*)ifr
->ifr_data
)->RxTcCrcLen
) {
418 case 16: RX_GAMMA_ITF_CFG(0)->rx_tc_crc_size
= 1; break;
419 case 32: RX_GAMMA_ITF_CFG(0)->rx_tc_crc_size
= 2; break;
420 default: RX_GAMMA_ITF_CFG(0)->rx_tc_crc_size
= 0;
423 TX_GAMMA_ITF_CFG(0)->tx_eth_fcs_gen_dis
= ((IFX_PTM_CFG_T
*)ifr
->ifr_data
)->TxEthCrcGen
? 0 : 1;
425 if ( ((IFX_PTM_CFG_T
*)ifr
->ifr_data
)->TxTcCrcGen
) {
426 switch ( ((IFX_PTM_CFG_T
*)ifr
->ifr_data
)->TxTcCrcLen
) {
427 case 16: TX_GAMMA_ITF_CFG(0)->tx_tc_crc_size
= 1; break;
428 case 32: TX_GAMMA_ITF_CFG(0)->tx_tc_crc_size
= 2; break;
429 default: TX_GAMMA_ITF_CFG(0)->tx_tc_crc_size
= 0;
433 TX_GAMMA_ITF_CFG(0)->tx_tc_crc_size
= 0;
437 case IFX_PTM_MAP_PKT_PRIO_TO_Q
:
439 struct ppe_prio_q_map cmd
;
441 if ( copy_from_user(&cmd
, ifr
->ifr_data
, sizeof(cmd
)) )
444 if ( cmd
.pkt_prio
< 0 || cmd
.pkt_prio
>= ARRAY_SIZE(g_ptm_prio_queue_map
) )
447 if ( cmd
.qid
< 0 || cmd
.qid
>= g_wanqos_en
)
450 g_ptm_prio_queue_map
[cmd
.pkt_prio
] = cmd
.qid
;
460 static void ptm_tx_timeout(struct net_device
*dev
)
462 ASSERT(dev
== g_net_dev
[0], "incorrect device");
464 /* disable TX irq, release skb when sending new packet */
465 IFX_REG_W32_MASK(1 << 17, 0, MBOX_IGU1_IER
);
467 /* wake up TX queue */
468 netif_wake_queue(dev
);
473 static inline struct sk_buff
* alloc_skb_rx(void)
477 /* allocate memroy including trailer and padding */
478 skb
= dev_alloc_skb(RX_MAX_BUFFER_SIZE
+ DATA_BUFFER_ALIGNMENT
);
480 /* must be burst length alignment and reserve two more bytes for MAC address alignment */
481 if ( ((unsigned int)skb
->data
& (DATA_BUFFER_ALIGNMENT
- 1)) != 0 )
482 skb_reserve(skb
, ~((unsigned int)skb
->data
+ (DATA_BUFFER_ALIGNMENT
- 1)) & (DATA_BUFFER_ALIGNMENT
- 1));
483 /* pub skb in reserved area "skb->data - 4" */
484 *((struct sk_buff
**)skb
->data
- 1) = skb
;
486 /* write back and invalidate cache */
487 dma_cache_wback_inv((unsigned long)skb
->data
- sizeof(skb
), sizeof(skb
));
488 /* invalidate cache */
489 dma_cache_inv((unsigned long)skb
->data
, (unsigned int)skb
->end
- (unsigned int)skb
->data
);
495 static inline struct sk_buff
* alloc_skb_tx(unsigned int size
)
499 /* allocate memory including padding */
500 size
= RX_MAX_BUFFER_SIZE
;
501 size
= (size
+ DATA_BUFFER_ALIGNMENT
- 1) & ~(DATA_BUFFER_ALIGNMENT
- 1);
502 skb
= dev_alloc_skb(size
+ DATA_BUFFER_ALIGNMENT
);
503 /* must be burst length alignment */
505 skb_reserve(skb
, ~((unsigned int)skb
->data
+ (DATA_BUFFER_ALIGNMENT
- 1)) & (DATA_BUFFER_ALIGNMENT
- 1));
509 static inline struct sk_buff
*get_skb_pointer(unsigned int dataptr
)
511 unsigned int skb_dataptr
;
514 // usually, CPE memory is less than 256M bytes
515 // so NULL means invalid pointer
516 if ( dataptr
== 0 ) {
517 dbg("dataptr is 0, it's supposed to be invalid pointer");
521 skb_dataptr
= (dataptr
- 4) | KSEG1
;
522 skb
= *(struct sk_buff
**)skb_dataptr
;
524 ASSERT((unsigned int)skb
>= KSEG0
, "invalid skb - skb = %#08x, dataptr = %#08x", (unsigned int)skb
, dataptr
);
525 ASSERT((((unsigned int)skb
->data
& (0x0FFFFFFF ^ (DATA_BUFFER_ALIGNMENT
- 1))) | KSEG1
) == (dataptr
| KSEG1
), "invalid skb - skb = %#08x, skb->data = %#08x, dataptr = %#08x", (unsigned int)skb
, (unsigned int)skb
->data
, dataptr
);
530 static inline int get_tx_desc(unsigned int itf
, unsigned int *f_full
)
533 struct ptm_itf
*p_itf
= &g_ptm_priv_data
.itf
[0];
535 // assume TX is serial operation
536 // no protection provided
540 if ( CPU_TO_WAN_TX_DESC_BASE
[p_itf
->tx_desc_pos
].own
== 0 ) {
541 desc_base
= p_itf
->tx_desc_pos
;
542 if ( ++(p_itf
->tx_desc_pos
) == CPU_TO_WAN_TX_DESC_NUM
)
543 p_itf
->tx_desc_pos
= 0;
544 if ( CPU_TO_WAN_TX_DESC_BASE
[p_itf
->tx_desc_pos
].own
== 0 )
551 static irqreturn_t
mailbox_irq_handler(int irq
, void *dev_id
)
556 isr
= IFX_REG_R32(MBOX_IGU1_ISR
);
557 IFX_REG_W32(isr
, MBOX_IGU1_ISRC
);
558 isr
&= IFX_REG_R32(MBOX_IGU1_IER
);
561 IFX_REG_W32_MASK(1, 0, MBOX_IGU1_IER
);
562 napi_schedule(&g_ptm_priv_data
.itf
[0].napi
);
563 #if defined(ENABLE_TMP_DBG) && ENABLE_TMP_DBG
565 volatile struct rx_descriptor
*desc
= &WAN_RX_DESC_BASE
[g_ptm_priv_data
.itf
[0].rx_desc_pos
];
567 if ( desc
->own
) { // PP32 hold
568 err("invalid interrupt");
574 IFX_REG_W32_MASK(1 << 16, 0, MBOX_IGU1_IER
);
575 tasklet_hi_schedule(&g_swap_desc_tasklet
);
578 IFX_REG_W32_MASK(1 << 17, 0, MBOX_IGU1_IER
);
579 netif_wake_queue(g_net_dev
[0]);
585 static void do_swap_desc_tasklet(unsigned long arg
)
588 volatile struct tx_descriptor
*desc
;
590 unsigned int byteoff
;
592 while ( budget
-- > 0 ) {
593 if ( WAN_SWAP_DESC_BASE
[g_ptm_priv_data
.itf
[0].tx_swap_desc_pos
].own
) // if PP32 hold descriptor
596 desc
= &WAN_SWAP_DESC_BASE
[g_ptm_priv_data
.itf
[0].tx_swap_desc_pos
];
597 if ( ++g_ptm_priv_data
.itf
[0].tx_swap_desc_pos
== WAN_SWAP_DESC_NUM
)
598 g_ptm_priv_data
.itf
[0].tx_swap_desc_pos
= 0;
600 skb
= get_skb_pointer(desc
->dataptr
);
602 dev_kfree_skb_any(skb
);
604 skb
= alloc_skb_tx(RX_MAX_BUFFER_SIZE
);
606 panic("can't allocate swap buffer for PPE firmware use\n");
607 byteoff
= (unsigned int)skb
->data
& (DATA_BUFFER_ALIGNMENT
- 1);
608 *(struct sk_buff
**)((unsigned int)skb
->data
- byteoff
- sizeof(struct sk_buff
*)) = skb
;
610 desc
->dataptr
= (unsigned int)skb
->data
& 0x0FFFFFFF;
615 IFX_REG_W32_MASK(0, 16, MBOX_IGU1_ISRC
);
616 // no more skb to be replaced
617 if ( WAN_SWAP_DESC_BASE
[g_ptm_priv_data
.itf
[0].tx_swap_desc_pos
].own
) { // if PP32 hold descriptor
618 IFX_REG_W32_MASK(0, 1 << 16, MBOX_IGU1_IER
);
622 tasklet_hi_schedule(&g_swap_desc_tasklet
);
627 static inline int ifx_ptm_version(char *buf
)
630 unsigned int major
, minor
;
632 ifx_ptm_get_fw_ver(&major
, &minor
);
634 len
+= sprintf(buf
+ len
, "PTM %d.%d.%d", IFX_PTM_VER_MAJOR
, IFX_PTM_VER_MID
, IFX_PTM_VER_MINOR
);
635 len
+= sprintf(buf
+ len
, " PTM (E1) firmware version %d.%d\n", major
, minor
);
640 static inline int init_priv_data(void)
644 g_wanqos_en
= wanqos_en
? wanqos_en
: 8;
645 if ( g_wanqos_en
> 8 )
648 for ( i
= 0; i
< ARRAY_SIZE(g_queue_gamma_map
); i
++ )
650 g_queue_gamma_map
[i
] = queue_gamma_map
[i
] & ((1 << g_wanqos_en
) - 1);
651 for ( j
= 0; j
< i
; j
++ )
652 g_queue_gamma_map
[i
] &= ~g_queue_gamma_map
[j
];
655 memset(&g_ptm_priv_data
, 0, sizeof(g_ptm_priv_data
));
658 int max_packet_priority
= ARRAY_SIZE(g_ptm_prio_queue_map
);
660 int q_step
, q_accum
, p_step
;
662 tx_num_q
= __ETH_WAN_TX_QUEUE_NUM
;
663 q_step
= tx_num_q
- 1;
664 p_step
= max_packet_priority
- 1;
665 for ( j
= 0, q_accum
= 0; j
< max_packet_priority
; j
++, q_accum
+= q_step
)
666 g_ptm_prio_queue_map
[j
] = q_step
- (q_accum
+ (p_step
>> 1)) / p_step
;
672 static inline void clear_priv_data(void)
676 static inline int init_tables(void)
678 struct sk_buff
*skb_pool
[WAN_RX_DESC_NUM
] = {0};
679 struct cfg_std_data_len cfg_std_data_len
= {0};
680 struct tx_qos_cfg tx_qos_cfg
= {0};
681 struct psave_cfg psave_cfg
= {0};
682 struct eg_bwctrl_cfg eg_bwctrl_cfg
= {0};
683 struct test_mode test_mode
= {0};
684 struct rx_bc_cfg rx_bc_cfg
= {0};
685 struct tx_bc_cfg tx_bc_cfg
= {0};
686 struct gpio_mode gpio_mode
= {0};
687 struct gpio_wm_cfg gpio_wm_cfg
= {0};
688 struct rx_gamma_itf_cfg rx_gamma_itf_cfg
= {0};
689 struct tx_gamma_itf_cfg tx_gamma_itf_cfg
= {0};
690 struct wtx_qos_q_desc_cfg wtx_qos_q_desc_cfg
= {0};
691 struct rx_descriptor rx_desc
= {0};
692 struct tx_descriptor tx_desc
= {0};
695 for ( i
= 0; i
< WAN_RX_DESC_NUM
; i
++ ) {
696 skb_pool
[i
] = alloc_skb_rx();
697 if ( skb_pool
[i
] == NULL
)
698 goto ALLOC_SKB_RX_FAIL
;
701 cfg_std_data_len
.byte_off
= RX_HEAD_MAC_ADDR_ALIGNMENT
; // this field replaces byte_off in rx descriptor of VDSL ingress
702 cfg_std_data_len
.data_len
= 1600;
703 *CFG_STD_DATA_LEN
= cfg_std_data_len
;
705 tx_qos_cfg
.time_tick
= cgu_get_pp32_clock() / 62500; // 16 * (cgu_get_pp32_clock() / 1000000)
706 tx_qos_cfg
.overhd_bytes
= 0;
707 tx_qos_cfg
.eth1_eg_qnum
= __ETH_WAN_TX_QUEUE_NUM
;
708 tx_qos_cfg
.eth1_burst_chk
= 1;
709 tx_qos_cfg
.eth1_qss
= 0;
710 tx_qos_cfg
.shape_en
= 0; // disable
711 tx_qos_cfg
.wfq_en
= 0; // strict priority
712 *TX_QOS_CFG
= tx_qos_cfg
;
714 psave_cfg
.start_state
= 0;
715 psave_cfg
.sleep_en
= 1; // enable sleep mode
716 *PSAVE_CFG
= psave_cfg
;
718 eg_bwctrl_cfg
.fdesc_wm
= 16;
719 eg_bwctrl_cfg
.class_len
= 128;
720 *EG_BWCTRL_CFG
= eg_bwctrl_cfg
;
722 //*GPIO_ADDR = (unsigned int)IFX_GPIO_P0_OUT;
723 *GPIO_ADDR
= (unsigned int)0x00000000; // disabled by default
725 gpio_mode
.gpio_bit_bc1
= 2;
726 gpio_mode
.gpio_bit_bc0
= 1;
727 gpio_mode
.gpio_bc1_en
= 0;
728 gpio_mode
.gpio_bc0_en
= 0;
729 *GPIO_MODE
= gpio_mode
;
731 gpio_wm_cfg
.stop_wm_bc1
= 2;
732 gpio_wm_cfg
.start_wm_bc1
= 4;
733 gpio_wm_cfg
.stop_wm_bc0
= 2;
734 gpio_wm_cfg
.start_wm_bc0
= 4;
735 *GPIO_WM_CFG
= gpio_wm_cfg
;
737 test_mode
.mib_clear_mode
= 0;
738 test_mode
.test_mode
= 0;
739 *TEST_MODE
= test_mode
;
741 rx_bc_cfg
.local_state
= 0;
742 rx_bc_cfg
.remote_state
= 0;
743 rx_bc_cfg
.to_false_th
= 7;
744 rx_bc_cfg
.to_looking_th
= 3;
745 *RX_BC_CFG(0) = rx_bc_cfg
;
746 *RX_BC_CFG(1) = rx_bc_cfg
;
748 tx_bc_cfg
.fill_wm
= 2;
749 tx_bc_cfg
.uflw_wm
= 2;
750 *TX_BC_CFG(0) = tx_bc_cfg
;
751 *TX_BC_CFG(1) = tx_bc_cfg
;
753 rx_gamma_itf_cfg
.receive_state
= 0;
754 rx_gamma_itf_cfg
.rx_min_len
= 60;
755 rx_gamma_itf_cfg
.rx_pad_en
= 1;
756 rx_gamma_itf_cfg
.rx_eth_fcs_ver_dis
= 0;
757 rx_gamma_itf_cfg
.rx_rm_eth_fcs
= 1;
758 rx_gamma_itf_cfg
.rx_tc_crc_ver_dis
= 0;
759 rx_gamma_itf_cfg
.rx_tc_crc_size
= 1;
760 rx_gamma_itf_cfg
.rx_eth_fcs_result
= 0xC704DD7B;
761 rx_gamma_itf_cfg
.rx_tc_crc_result
= 0x1D0F1D0F;
762 rx_gamma_itf_cfg
.rx_crc_cfg
= 0x2500;
763 rx_gamma_itf_cfg
.rx_eth_fcs_init_value
= 0xFFFFFFFF;
764 rx_gamma_itf_cfg
.rx_tc_crc_init_value
= 0x0000FFFF;
765 rx_gamma_itf_cfg
.rx_max_len_sel
= 0;
766 rx_gamma_itf_cfg
.rx_edit_num2
= 0;
767 rx_gamma_itf_cfg
.rx_edit_pos2
= 0;
768 rx_gamma_itf_cfg
.rx_edit_type2
= 0;
769 rx_gamma_itf_cfg
.rx_edit_en2
= 0;
770 rx_gamma_itf_cfg
.rx_edit_num1
= 0;
771 rx_gamma_itf_cfg
.rx_edit_pos1
= 0;
772 rx_gamma_itf_cfg
.rx_edit_type1
= 0;
773 rx_gamma_itf_cfg
.rx_edit_en1
= 0;
774 rx_gamma_itf_cfg
.rx_inserted_bytes_1l
= 0;
775 rx_gamma_itf_cfg
.rx_inserted_bytes_1h
= 0;
776 rx_gamma_itf_cfg
.rx_inserted_bytes_2l
= 0;
777 rx_gamma_itf_cfg
.rx_inserted_bytes_2h
= 0;
778 rx_gamma_itf_cfg
.rx_len_adj
= -6;
779 for ( i
= 0; i
< 4; i
++ )
780 *RX_GAMMA_ITF_CFG(i
) = rx_gamma_itf_cfg
;
782 tx_gamma_itf_cfg
.tx_len_adj
= 6;
783 tx_gamma_itf_cfg
.tx_crc_off_adj
= 6;
784 tx_gamma_itf_cfg
.tx_min_len
= 0;
785 tx_gamma_itf_cfg
.tx_eth_fcs_gen_dis
= 0;
786 tx_gamma_itf_cfg
.tx_tc_crc_size
= 1;
787 tx_gamma_itf_cfg
.tx_crc_cfg
= 0x2F00;
788 tx_gamma_itf_cfg
.tx_eth_fcs_init_value
= 0xFFFFFFFF;
789 tx_gamma_itf_cfg
.tx_tc_crc_init_value
= 0x0000FFFF;
790 for ( i
= 0; i
< ARRAY_SIZE(g_queue_gamma_map
); i
++ ) {
791 tx_gamma_itf_cfg
.queue_mapping
= g_queue_gamma_map
[i
];
792 *TX_GAMMA_ITF_CFG(i
) = tx_gamma_itf_cfg
;
795 for ( i
= 0; i
< __ETH_WAN_TX_QUEUE_NUM
; i
++ ) {
796 wtx_qos_q_desc_cfg
.length
= WAN_TX_DESC_NUM
;
797 wtx_qos_q_desc_cfg
.addr
= __ETH_WAN_TX_DESC_BASE(i
);
798 *WTX_QOS_Q_DESC_CFG(i
) = wtx_qos_q_desc_cfg
;
801 // default TX queue QoS config is all ZERO
804 IFX_REG_W32(0x90111293, TX_CTRL_K_TABLE(0));
805 IFX_REG_W32(0x14959617, TX_CTRL_K_TABLE(1));
806 IFX_REG_W32(0x18999A1B, TX_CTRL_K_TABLE(2));
807 IFX_REG_W32(0x9C1D1E9F, TX_CTRL_K_TABLE(3));
808 IFX_REG_W32(0xA02122A3, TX_CTRL_K_TABLE(4));
809 IFX_REG_W32(0x24A5A627, TX_CTRL_K_TABLE(5));
810 IFX_REG_W32(0x28A9AA2B, TX_CTRL_K_TABLE(6));
811 IFX_REG_W32(0xAC2D2EAF, TX_CTRL_K_TABLE(7));
812 IFX_REG_W32(0x30B1B233, TX_CTRL_K_TABLE(8));
813 IFX_REG_W32(0xB43536B7, TX_CTRL_K_TABLE(9));
814 IFX_REG_W32(0xB8393ABB, TX_CTRL_K_TABLE(10));
815 IFX_REG_W32(0x3CBDBE3F, TX_CTRL_K_TABLE(11));
816 IFX_REG_W32(0xC04142C3, TX_CTRL_K_TABLE(12));
817 IFX_REG_W32(0x44C5C647, TX_CTRL_K_TABLE(13));
818 IFX_REG_W32(0x48C9CA4B, TX_CTRL_K_TABLE(14));
819 IFX_REG_W32(0xCC4D4ECF, TX_CTRL_K_TABLE(15));
821 // init RX descriptor
826 rx_desc
.byteoff
= RX_HEAD_MAC_ADDR_ALIGNMENT
;
827 rx_desc
.datalen
= RX_MAX_BUFFER_SIZE
- RX_HEAD_MAC_ADDR_ALIGNMENT
;
828 for ( i
= 0; i
< WAN_RX_DESC_NUM
; i
++ ) {
829 rx_desc
.dataptr
= (unsigned int)skb_pool
[i
]->data
& 0x0FFFFFFF;
830 WAN_RX_DESC_BASE
[i
] = rx_desc
;
833 // init TX descriptor
843 for ( i
= 0; i
< CPU_TO_WAN_TX_DESC_NUM
; i
++ )
844 CPU_TO_WAN_TX_DESC_BASE
[i
] = tx_desc
;
845 for ( i
= 0; i
< WAN_TX_DESC_NUM_TOTAL
; i
++ )
846 WAN_TX_DESC_BASE(0)[i
] = tx_desc
;
848 // init Swap descriptor
849 for ( i
= 0; i
< WAN_SWAP_DESC_NUM
; i
++ )
850 WAN_SWAP_DESC_BASE
[i
] = tx_desc
;
852 // init fastpath TX descriptor
854 for ( i
= 0; i
< FASTPATH_TO_WAN_TX_DESC_NUM
; i
++ )
855 FASTPATH_TO_WAN_TX_DESC_BASE
[i
] = tx_desc
;
861 dev_kfree_skb_any(skb_pool
[i
]);
865 static inline void clear_tables(void)
870 for ( i
= 0; i
< WAN_RX_DESC_NUM
; i
++ ) {
871 skb
= get_skb_pointer(WAN_RX_DESC_BASE
[i
].dataptr
);
873 dev_kfree_skb_any(skb
);
876 for ( i
= 0; i
< CPU_TO_WAN_TX_DESC_NUM
; i
++ ) {
877 skb
= get_skb_pointer(CPU_TO_WAN_TX_DESC_BASE
[i
].dataptr
);
879 dev_kfree_skb_any(skb
);
882 for ( j
= 0; j
< 8; j
++ )
883 for ( i
= 0; i
< WAN_TX_DESC_NUM
; i
++ ) {
884 skb
= get_skb_pointer(WAN_TX_DESC_BASE(j
)[i
].dataptr
);
886 dev_kfree_skb_any(skb
);
889 for ( i
= 0; i
< WAN_SWAP_DESC_NUM
; i
++ ) {
890 skb
= get_skb_pointer(WAN_SWAP_DESC_BASE
[i
].dataptr
);
892 dev_kfree_skb_any(skb
);
895 for ( i
= 0; i
< FASTPATH_TO_WAN_TX_DESC_NUM
; i
++ ) {
896 skb
= get_skb_pointer(FASTPATH_TO_WAN_TX_DESC_BASE
[i
].dataptr
);
898 dev_kfree_skb_any(skb
);
902 static int ptm_showtime_enter(struct port_cell_info
*port_cell
, void *xdata_addr
)
906 ASSERT(port_cell
!= NULL
, "port_cell is NULL");
907 ASSERT(xdata_addr
!= NULL
, "xdata_addr is NULL");
909 // TODO: ReTX set xdata_addr
910 g_xdata_addr
= xdata_addr
;
914 for ( i
= 0; i
< ARRAY_SIZE(g_net_dev
); i
++ )
915 netif_carrier_on(g_net_dev
[i
]);
917 IFX_REG_W32(0x0F, UTP_CFG
);
920 // IFX_REG_W32_MASK(1 << 17, 0, FFSM_CFG0);
923 printk("enter showtime\n");
928 static int ptm_showtime_exit(void)
936 // IFX_REG_W32_MASK(0, 1 << 17, FFSM_CFG0);
939 IFX_REG_W32(0x00, UTP_CFG
);
941 for ( i
= 0; i
< ARRAY_SIZE(g_net_dev
); i
++ )
942 netif_carrier_off(g_net_dev
[i
]);
946 // TODO: ReTX clean state
949 printk("leave showtime\n");
956 static int ifx_ptm_init(void)
961 struct port_cell_info port_cell
= {0};
963 ret
= init_priv_data();
965 err("INIT_PRIV_DATA_FAIL");
966 goto INIT_PRIV_DATA_FAIL
;
972 err("INIT_TABLES_FAIL");
973 goto INIT_TABLES_FAIL
;
976 for ( i
= 0; i
< ARRAY_SIZE(g_net_dev
); i
++ ) {
977 g_net_dev
[i
] = alloc_netdev(0, g_net_dev_name
[i
], NET_NAME_UNKNOWN
, ether_setup
);
978 if ( g_net_dev
[i
] == NULL
)
979 goto ALLOC_NETDEV_FAIL
;
980 ptm_setup(g_net_dev
[i
], i
);
983 for ( i
= 0; i
< ARRAY_SIZE(g_net_dev
); i
++ ) {
984 ret
= register_netdev(g_net_dev
[i
]);
986 goto REGISTER_NETDEV_FAIL
;
989 /* register interrupt handler */
990 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4,1,0)
991 ret
= request_irq(PPE_MAILBOX_IGU1_INT
, mailbox_irq_handler
, 0, "ptm_mailbox_isr", &g_ptm_priv_data
);
993 ret
= request_irq(PPE_MAILBOX_IGU1_INT
, mailbox_irq_handler
, IRQF_DISABLED
, "ptm_mailbox_isr", &g_ptm_priv_data
);
996 if ( ret
== -EBUSY
) {
997 err("IRQ may be occupied by other driver, please reconfig to disable it.");
1000 err("request_irq fail");
1002 goto REQUEST_IRQ_PPE_MAILBOX_IGU1_INT_FAIL
;
1004 disable_irq(PPE_MAILBOX_IGU1_INT
);
1006 ret
= ifx_pp32_start(0);
1008 err("ifx_pp32_start fail!");
1009 goto PP32_START_FAIL
;
1011 IFX_REG_W32(1 << 16, MBOX_IGU1_IER
); // enable SWAP interrupt
1012 IFX_REG_W32(~0, MBOX_IGU1_ISRC
);
1014 enable_irq(PPE_MAILBOX_IGU1_INT
);
1016 ifx_mei_atm_showtime_check(&g_showtime
, &port_cell
, &g_xdata_addr
);
1018 ifx_mei_atm_showtime_enter
= ptm_showtime_enter
;
1019 ifx_mei_atm_showtime_exit
= ptm_showtime_exit
;
1021 ifx_ptm_version(ver_str
);
1022 printk(KERN_INFO
"%s", ver_str
);
1024 printk("ifxmips_ptm: PTM init succeed\n");
1029 free_irq(PPE_MAILBOX_IGU1_INT
, &g_ptm_priv_data
);
1030 REQUEST_IRQ_PPE_MAILBOX_IGU1_INT_FAIL
:
1031 i
= ARRAY_SIZE(g_net_dev
);
1032 REGISTER_NETDEV_FAIL
:
1034 unregister_netdev(g_net_dev
[i
]);
1035 i
= ARRAY_SIZE(g_net_dev
);
1038 free_netdev(g_net_dev
[i
]);
1039 g_net_dev
[i
] = NULL
;
1042 INIT_PRIV_DATA_FAIL
:
1044 printk("ifxmips_ptm: PTM init failed\n");
1048 static void __exit
ifx_ptm_exit(void)
1051 ifx_mei_atm_showtime_enter
= NULL
;
1052 ifx_mei_atm_showtime_exit
= NULL
;
1057 free_irq(PPE_MAILBOX_IGU1_INT
, &g_ptm_priv_data
);
1059 for ( i
= 0; i
< ARRAY_SIZE(g_net_dev
); i
++ )
1060 unregister_netdev(g_net_dev
[i
]);
1062 for ( i
= 0; i
< ARRAY_SIZE(g_net_dev
); i
++ ) {
1063 free_netdev(g_net_dev
[i
]);
1064 g_net_dev
[i
] = NULL
;
1069 ifx_ptm_uninit_chip();
1075 static int __init
wanqos_en_setup(char *line
)
1077 wanqos_en
= simple_strtoul(line
, NULL
, 0);
1079 if ( wanqos_en
< 1 || wanqos_en
> 8 )
1085 static int __init
queue_gamma_map_setup(char *line
)
1090 for ( i
= 0, p
= line
; i
< ARRAY_SIZE(queue_gamma_map
) && isxdigit(*p
); i
++ )
1092 queue_gamma_map
[i
] = simple_strtoul(p
, &p
, 0);
1093 if ( *p
== ',' || *p
== ';' || *p
== ':' )
1100 module_init(ifx_ptm_init
);
1101 module_exit(ifx_ptm_exit
);
1103 __setup("wanqos_en=", wanqos_en_setup
);
1104 __setup("queue_gamma_map=", queue_gamma_map_setup
);
1107 MODULE_LICENSE("GPL");