+++ /dev/null
-/******************************************************************************
-**
-** FILE NAME : ifxmips_ptm_vdsl.c
-** PROJECT : UEIP
-** MODULES : PTM
-**
-** DATE : 7 Jul 2009
-** AUTHOR : Xu Liang
-** DESCRIPTION : PTM driver common source file (core functions for VR9)
-** COPYRIGHT : Copyright (c) 2006
-** Infineon Technologies AG
-** Am Campeon 1-12, 85579 Neubiberg, Germany
-**
-** This program is free software; you can redistribute it and/or modify
-** it under the terms of the GNU General Public License as published by
-** the Free Software Foundation; either version 2 of the License, or
-** (at your option) any later version.
-**
-** HISTORY
-** $Date $Author $Comment
-** 07 JUL 2009 Xu Liang Init Version
-*******************************************************************************/
-
-#include <linux/version.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/ctype.h>
-#include <linux/errno.h>
-#include <linux/proc_fs.h>
-#include <linux/init.h>
-#include <linux/ioctl.h>
-#include <linux/etherdevice.h>
-#include <linux/interrupt.h>
-
-#include "ifxmips_ptm_vdsl.h"
-#include <lantiq_soc.h>
-
-#define MODULE_PARM_ARRAY(a, b) module_param_array(a, int, NULL, 0)
-#define MODULE_PARM(a, b) module_param(a, int, 0)
-
-static int wanqos_en = 0;
-static int queue_gamma_map[4] = {0xFE, 0x01, 0x00, 0x00};
-
-MODULE_PARM(wanqos_en, "i");
-MODULE_PARM_DESC(wanqos_en, "WAN QoS support, 1 - enabled, 0 - disabled.");
-
-MODULE_PARM_ARRAY(queue_gamma_map, "4-4i");
-MODULE_PARM_DESC(queue_gamma_map, "TX QoS queues mapping to 4 TX Gamma interfaces.");
-
-extern int (*ifx_mei_atm_showtime_enter)(struct port_cell_info *, void *);
-extern int (*ifx_mei_atm_showtime_exit)(void);
-extern int ifx_mei_atm_showtime_check(int *is_showtime, struct port_cell_info *port_cell, void **xdata_addr);
-
-static int g_showtime = 0;
-static void *g_xdata_addr = NULL;
-
-
-#define ENABLE_TMP_DBG 0
-
-unsigned long cgu_get_pp32_clock(void)
-{
- struct clk *c = clk_get_ppe();
- unsigned long rate = clk_get_rate(c);
- clk_put(c);
- return rate;
-}
-
-static void ptm_setup(struct net_device *, int);
-static struct net_device_stats *ptm_get_stats(struct net_device *);
-static int ptm_open(struct net_device *);
-static int ptm_stop(struct net_device *);
- static unsigned int ptm_poll(int, unsigned int);
- static int ptm_napi_poll(struct napi_struct *, int);
-static int ptm_hard_start_xmit(struct sk_buff *, struct net_device *);
-static int ptm_ioctl(struct net_device *, struct ifreq *, int);
-static void ptm_tx_timeout(struct net_device *);
-
-static inline struct sk_buff* alloc_skb_rx(void);
-static inline struct sk_buff* alloc_skb_tx(unsigned int);
-static inline struct sk_buff *get_skb_pointer(unsigned int);
-static inline int get_tx_desc(unsigned int, unsigned int *);
-
-/*
- * Mailbox handler and signal function
- */
-static irqreturn_t mailbox_irq_handler(int, void *);
-
-/*
- * Tasklet to Handle Swap Descriptors
- */
-static void do_swap_desc_tasklet(unsigned long);
-
-
-/*
- * Init & clean-up functions
- */
-static inline int init_priv_data(void);
-static inline void clear_priv_data(void);
-static inline int init_tables(void);
-static inline void clear_tables(void);
-
-static int g_wanqos_en = 0;
-
-static int g_queue_gamma_map[4];
-
-static struct ptm_priv_data g_ptm_priv_data;
-
-static struct net_device_ops g_ptm_netdev_ops = {
- .ndo_get_stats = ptm_get_stats,
- .ndo_open = ptm_open,
- .ndo_stop = ptm_stop,
- .ndo_start_xmit = ptm_hard_start_xmit,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_set_mac_address = eth_mac_addr,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_do_ioctl = ptm_ioctl,
- .ndo_tx_timeout = ptm_tx_timeout,
-};
-
-static struct net_device *g_net_dev[1] = {0};
-static char *g_net_dev_name[1] = {"ptm0"};
-
-static int g_ptm_prio_queue_map[8];
-
-static DECLARE_TASKLET(g_swap_desc_tasklet, do_swap_desc_tasklet, 0);
-
-
-unsigned int ifx_ptm_dbg_enable = DBG_ENABLE_MASK_ERR;
-
-/*
- * ####################################
- * Local Function
- * ####################################
- */
-
-static void ptm_setup(struct net_device *dev, int ndev)
-{
- dev->netdev_ops = &g_ptm_netdev_ops;
- netif_napi_add(dev, &g_ptm_priv_data.itf[ndev].napi, ptm_napi_poll, 16);
- dev->watchdog_timeo = ETH_WATCHDOG_TIMEOUT;
-
- dev->dev_addr[0] = 0x00;
- dev->dev_addr[1] = 0x20;
- dev->dev_addr[2] = 0xda;
- dev->dev_addr[3] = 0x86;
- dev->dev_addr[4] = 0x23;
- dev->dev_addr[5] = 0x75 + ndev;
-}
-
-static struct net_device_stats *ptm_get_stats(struct net_device *dev)
-{
- struct net_device_stats *s;
-
- if ( dev != g_net_dev[0] )
- return NULL;
-s = &g_ptm_priv_data.itf[0].stats;
-
- return s;
-}
-
-static int ptm_open(struct net_device *dev)
-{
- ASSERT(dev == g_net_dev[0], "incorrect device");
-
- napi_enable(&g_ptm_priv_data.itf[0].napi);
-
- IFX_REG_W32_MASK(0, 1, MBOX_IGU1_IER);
-
- netif_start_queue(dev);
-
- return 0;
-}
-
-static int ptm_stop(struct net_device *dev)
-{
- ASSERT(dev == g_net_dev[0], "incorrect device");
-
- IFX_REG_W32_MASK(1 | (1 << 17), 0, MBOX_IGU1_IER);
-
- napi_disable(&g_ptm_priv_data.itf[0].napi);
-
- netif_stop_queue(dev);
-
- return 0;
-}
-
-static unsigned int ptm_poll(int ndev, unsigned int work_to_do)
-{
- unsigned int work_done = 0;
- volatile struct rx_descriptor *desc;
- struct rx_descriptor reg_desc;
- struct sk_buff *skb, *new_skb;
-
- ASSERT(ndev >= 0 && ndev < ARRAY_SIZE(g_net_dev), "ndev = %d (wrong value)", ndev);
-
- while ( work_done < work_to_do ) {
- desc = &WAN_RX_DESC_BASE[g_ptm_priv_data.itf[0].rx_desc_pos];
- if ( desc->own /* || !desc->c */ ) // if PP32 hold descriptor or descriptor not completed
- break;
- if ( ++g_ptm_priv_data.itf[0].rx_desc_pos == WAN_RX_DESC_NUM )
- g_ptm_priv_data.itf[0].rx_desc_pos = 0;
-
- reg_desc = *desc;
- skb = get_skb_pointer(reg_desc.dataptr);
- ASSERT(skb != NULL, "invalid pointer skb == NULL");
-
- new_skb = alloc_skb_rx();
- if ( new_skb != NULL ) {
- skb_reserve(skb, reg_desc.byteoff);
- skb_put(skb, reg_desc.datalen);
-
- // parse protocol header
- skb->dev = g_net_dev[0];
- skb->protocol = eth_type_trans(skb, skb->dev);
-
- g_net_dev[0]->last_rx = jiffies;
-
- netif_receive_skb(skb);
-
- g_ptm_priv_data.itf[0].stats.rx_packets++;
- g_ptm_priv_data.itf[0].stats.rx_bytes += reg_desc.datalen;
-
- reg_desc.dataptr = (unsigned int)new_skb->data & 0x0FFFFFFF;
- reg_desc.byteoff = RX_HEAD_MAC_ADDR_ALIGNMENT;
- }
-
- reg_desc.datalen = RX_MAX_BUFFER_SIZE - RX_HEAD_MAC_ADDR_ALIGNMENT;
- reg_desc.own = 1;
- reg_desc.c = 0;
-
- /* write discriptor to memory */
- *((volatile unsigned int *)desc + 1) = *((unsigned int *)®_desc + 1);
- wmb();
- *(volatile unsigned int *)desc = *(unsigned int *)®_desc;
-
- work_done++;
- }
-
- return work_done;
-}
-
-static int ptm_napi_poll(struct napi_struct *napi, int budget)
-{
- int ndev = 0;
- unsigned int work_done;
-
- work_done = ptm_poll(ndev, budget);
-
- // interface down
- if ( !netif_running(napi->dev) ) {
- napi_complete(napi);
- return work_done;
- }
-
- // clear interrupt
- IFX_REG_W32_MASK(0, 1, MBOX_IGU1_ISRC);
- // no more traffic
- if ( WAN_RX_DESC_BASE[g_ptm_priv_data.itf[0].rx_desc_pos].own ) { // if PP32 hold descriptor
- napi_complete(napi);
- IFX_REG_W32_MASK(0, 1, MBOX_IGU1_IER);
- return work_done;
- }
-
- // next round
- return work_done;
-}
-
-static int ptm_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- unsigned int f_full;
- int desc_base;
- volatile struct tx_descriptor *desc;
- struct tx_descriptor reg_desc = {0};
- struct sk_buff *skb_to_free;
- unsigned int byteoff;
-
- ASSERT(dev == g_net_dev[0], "incorrect device");
-
- if ( !g_showtime ) {
- err("not in showtime");
- goto PTM_HARD_START_XMIT_FAIL;
- }
-
- /* allocate descriptor */
- desc_base = get_tx_desc(0, &f_full);
- if ( f_full ) {
- dev->trans_start = jiffies;
- netif_stop_queue(dev);
-
- IFX_REG_W32_MASK(0, 1 << 17, MBOX_IGU1_ISRC);
- IFX_REG_W32_MASK(0, 1 << 17, MBOX_IGU1_IER);
- }
- if ( desc_base < 0 )
- goto PTM_HARD_START_XMIT_FAIL;
- desc = &CPU_TO_WAN_TX_DESC_BASE[desc_base];
-
- byteoff = (unsigned int)skb->data & (DATA_BUFFER_ALIGNMENT - 1);
- if ( skb_headroom(skb) < sizeof(struct sk_buff *) + byteoff || skb_cloned(skb) ) {
- struct sk_buff *new_skb;
-
- ASSERT(skb_headroom(skb) >= sizeof(struct sk_buff *) + byteoff, "skb_headroom(skb) < sizeof(struct sk_buff *) + byteoff");
- ASSERT(!skb_cloned(skb), "skb is cloned");
-
- new_skb = alloc_skb_tx(skb->len);
- if ( new_skb == NULL ) {
- dbg("no memory");
- goto ALLOC_SKB_TX_FAIL;
- }
- skb_put(new_skb, skb->len);
- memcpy(new_skb->data, skb->data, skb->len);
- dev_kfree_skb_any(skb);
- skb = new_skb;
- byteoff = (unsigned int)skb->data & (DATA_BUFFER_ALIGNMENT - 1);
- /* write back to physical memory */
- dma_cache_wback((unsigned long)skb->data, skb->len);
- }
-
- *(struct sk_buff **)((unsigned int)skb->data - byteoff - sizeof(struct sk_buff *)) = skb;
- /* write back to physical memory */
- dma_cache_wback((unsigned long)skb->data - byteoff - sizeof(struct sk_buff *), skb->len + byteoff + sizeof(struct sk_buff *));
-
- /* free previous skb */
- skb_to_free = get_skb_pointer(desc->dataptr);
- if ( skb_to_free != NULL )
- dev_kfree_skb_any(skb_to_free);
-
- /* update descriptor */
- reg_desc.small = 0;
- reg_desc.dataptr = (unsigned int)skb->data & (0x0FFFFFFF ^ (DATA_BUFFER_ALIGNMENT - 1));
- reg_desc.datalen = skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len;
- reg_desc.qid = g_ptm_prio_queue_map[skb->priority > 7 ? 7 : skb->priority];
- reg_desc.byteoff = byteoff;
- reg_desc.own = 1;
- reg_desc.c = 1;
- reg_desc.sop = reg_desc.eop = 1;
-
- /* update MIB */
- g_ptm_priv_data.itf[0].stats.tx_packets++;
- g_ptm_priv_data.itf[0].stats.tx_bytes += reg_desc.datalen;
-
- /* write discriptor to memory */
- *((volatile unsigned int *)desc + 1) = *((unsigned int *)®_desc + 1);
- wmb();
- *(volatile unsigned int *)desc = *(unsigned int *)®_desc;
-
- dev->trans_start = jiffies;
-
- return 0;
-
-ALLOC_SKB_TX_FAIL:
-PTM_HARD_START_XMIT_FAIL:
- dev_kfree_skb_any(skb);
- g_ptm_priv_data.itf[0].stats.tx_dropped++;
- return 0;
-}
-
-static int ptm_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
-{
- ASSERT(dev == g_net_dev[0], "incorrect device");
-
- switch ( cmd )
- {
- case IFX_PTM_MIB_CW_GET:
- ((PTM_CW_IF_ENTRY_T *)ifr->ifr_data)->ifRxNoIdleCodewords = IFX_REG_R32(DREG_AR_CELL0) + IFX_REG_R32(DREG_AR_CELL1);
- ((PTM_CW_IF_ENTRY_T *)ifr->ifr_data)->ifRxIdleCodewords = IFX_REG_R32(DREG_AR_IDLE_CNT0) + IFX_REG_R32(DREG_AR_IDLE_CNT1);
- ((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);
- ((PTM_CW_IF_ENTRY_T *)ifr->ifr_data)->ifTxNoIdleCodewords = IFX_REG_R32(DREG_AT_CELL0) + IFX_REG_R32(DREG_AT_CELL1);
- ((PTM_CW_IF_ENTRY_T *)ifr->ifr_data)->ifTxIdleCodewords = IFX_REG_R32(DREG_AT_IDLE_CNT0) + IFX_REG_R32(DREG_AT_IDLE_CNT1);
- break;
- case IFX_PTM_MIB_FRAME_GET:
- {
- PTM_FRAME_MIB_T data = {0};
- int i;
-
- 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);
- for ( i = 0; i < 4; i++ )
- data.RxDropped += WAN_RX_MIB_TABLE(i)->wrx_dropdes_pdu;
- for ( i = 0; i < 8; i++ )
- data.TxSend += WAN_TX_MIB_TABLE(i)->wtx_total_pdu;
-
- *((PTM_FRAME_MIB_T *)ifr->ifr_data) = data;
- }
- break;
- case IFX_PTM_CFG_GET:
- // use bear channel 0 preemption gamma interface settings
- ((IFX_PTM_CFG_T *)ifr->ifr_data)->RxEthCrcPresent = 1;
- ((IFX_PTM_CFG_T *)ifr->ifr_data)->RxEthCrcCheck = RX_GAMMA_ITF_CFG(0)->rx_eth_fcs_ver_dis == 0 ? 1 : 0;
- ((IFX_PTM_CFG_T *)ifr->ifr_data)->RxTcCrcCheck = RX_GAMMA_ITF_CFG(0)->rx_tc_crc_ver_dis == 0 ? 1 : 0;;
- ((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);
- ((IFX_PTM_CFG_T *)ifr->ifr_data)->TxEthCrcGen = TX_GAMMA_ITF_CFG(0)->tx_eth_fcs_gen_dis == 0 ? 1 : 0;
- ((IFX_PTM_CFG_T *)ifr->ifr_data)->TxTcCrcGen = TX_GAMMA_ITF_CFG(0)->tx_tc_crc_size == 0 ? 0 : 1;
- ((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);
- break;
- case IFX_PTM_CFG_SET:
- {
- int i;
-
- for ( i = 0; i < 4; i++ ) {
- RX_GAMMA_ITF_CFG(i)->rx_eth_fcs_ver_dis = ((IFX_PTM_CFG_T *)ifr->ifr_data)->RxEthCrcCheck ? 0 : 1;
-
- RX_GAMMA_ITF_CFG(0)->rx_tc_crc_ver_dis = ((IFX_PTM_CFG_T *)ifr->ifr_data)->RxTcCrcCheck ? 0 : 1;
-
- switch ( ((IFX_PTM_CFG_T *)ifr->ifr_data)->RxTcCrcLen ) {
- case 16: RX_GAMMA_ITF_CFG(0)->rx_tc_crc_size = 1; break;
- case 32: RX_GAMMA_ITF_CFG(0)->rx_tc_crc_size = 2; break;
- default: RX_GAMMA_ITF_CFG(0)->rx_tc_crc_size = 0;
- }
-
- TX_GAMMA_ITF_CFG(0)->tx_eth_fcs_gen_dis = ((IFX_PTM_CFG_T *)ifr->ifr_data)->TxEthCrcGen ? 0 : 1;
-
- if ( ((IFX_PTM_CFG_T *)ifr->ifr_data)->TxTcCrcGen ) {
- switch ( ((IFX_PTM_CFG_T *)ifr->ifr_data)->TxTcCrcLen ) {
- case 16: TX_GAMMA_ITF_CFG(0)->tx_tc_crc_size = 1; break;
- case 32: TX_GAMMA_ITF_CFG(0)->tx_tc_crc_size = 2; break;
- default: TX_GAMMA_ITF_CFG(0)->tx_tc_crc_size = 0;
- }
- }
- else
- TX_GAMMA_ITF_CFG(0)->tx_tc_crc_size = 0;
- }
- }
- break;
- case IFX_PTM_MAP_PKT_PRIO_TO_Q:
- {
- struct ppe_prio_q_map cmd;
-
- if ( copy_from_user(&cmd, ifr->ifr_data, sizeof(cmd)) )
- return -EFAULT;
-
- if ( cmd.pkt_prio < 0 || cmd.pkt_prio >= ARRAY_SIZE(g_ptm_prio_queue_map) )
- return -EINVAL;
-
- if ( cmd.qid < 0 || cmd.qid >= g_wanqos_en )
- return -EINVAL;
-
- g_ptm_prio_queue_map[cmd.pkt_prio] = cmd.qid;
- }
- break;
- default:
- return -EOPNOTSUPP;
- }
-
- return 0;
-}
-
-static void ptm_tx_timeout(struct net_device *dev)
-{
- ASSERT(dev == g_net_dev[0], "incorrect device");
-
- /* disable TX irq, release skb when sending new packet */
- IFX_REG_W32_MASK(1 << 17, 0, MBOX_IGU1_IER);
-
- /* wake up TX queue */
- netif_wake_queue(dev);
-
- return;
-}
-
-static inline struct sk_buff* alloc_skb_rx(void)
-{
- struct sk_buff *skb;
-
- /* allocate memroy including trailer and padding */
- skb = dev_alloc_skb(RX_MAX_BUFFER_SIZE + DATA_BUFFER_ALIGNMENT);
- if ( skb != NULL ) {
- /* must be burst length alignment and reserve two more bytes for MAC address alignment */
- if ( ((unsigned int)skb->data & (DATA_BUFFER_ALIGNMENT - 1)) != 0 )
- skb_reserve(skb, ~((unsigned int)skb->data + (DATA_BUFFER_ALIGNMENT - 1)) & (DATA_BUFFER_ALIGNMENT - 1));
- /* pub skb in reserved area "skb->data - 4" */
- *((struct sk_buff **)skb->data - 1) = skb;
- wmb();
- /* write back and invalidate cache */
- dma_cache_wback_inv((unsigned long)skb->data - sizeof(skb), sizeof(skb));
- /* invalidate cache */
- dma_cache_inv((unsigned long)skb->data, (unsigned int)skb->end - (unsigned int)skb->data);
- }
-
- return skb;
-}
-
-static inline struct sk_buff* alloc_skb_tx(unsigned int size)
-{
- struct sk_buff *skb;
-
- /* allocate memory including padding */
- size = RX_MAX_BUFFER_SIZE;
- size = (size + DATA_BUFFER_ALIGNMENT - 1) & ~(DATA_BUFFER_ALIGNMENT - 1);
- skb = dev_alloc_skb(size + DATA_BUFFER_ALIGNMENT);
- /* must be burst length alignment */
- if ( skb != NULL )
- skb_reserve(skb, ~((unsigned int)skb->data + (DATA_BUFFER_ALIGNMENT - 1)) & (DATA_BUFFER_ALIGNMENT - 1));
- return skb;
-}
-
-static inline struct sk_buff *get_skb_pointer(unsigned int dataptr)
-{
- unsigned int skb_dataptr;
- struct sk_buff *skb;
-
- // usually, CPE memory is less than 256M bytes
- // so NULL means invalid pointer
- if ( dataptr == 0 ) {
- dbg("dataptr is 0, it's supposed to be invalid pointer");
- return NULL;
- }
-
- skb_dataptr = (dataptr - 4) | KSEG1;
- skb = *(struct sk_buff **)skb_dataptr;
-
- ASSERT((unsigned int)skb >= KSEG0, "invalid skb - skb = %#08x, dataptr = %#08x", (unsigned int)skb, dataptr);
- 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);
-
- return skb;
-}
-
-static inline int get_tx_desc(unsigned int itf, unsigned int *f_full)
-{
- int desc_base = -1;
- struct ptm_itf *p_itf = &g_ptm_priv_data.itf[0];
-
- // assume TX is serial operation
- // no protection provided
-
- *f_full = 1;
-
- if ( CPU_TO_WAN_TX_DESC_BASE[p_itf->tx_desc_pos].own == 0 ) {
- desc_base = p_itf->tx_desc_pos;
- if ( ++(p_itf->tx_desc_pos) == CPU_TO_WAN_TX_DESC_NUM )
- p_itf->tx_desc_pos = 0;
- if ( CPU_TO_WAN_TX_DESC_BASE[p_itf->tx_desc_pos].own == 0 )
- *f_full = 0;
- }
-
- return desc_base;
-}
-
-static irqreturn_t mailbox_irq_handler(int irq, void *dev_id)
-{
- unsigned int isr;
- int i;
-
- isr = IFX_REG_R32(MBOX_IGU1_ISR);
- IFX_REG_W32(isr, MBOX_IGU1_ISRC);
- isr &= IFX_REG_R32(MBOX_IGU1_IER);
-
- if (isr & BIT(0)) {
- IFX_REG_W32_MASK(1, 0, MBOX_IGU1_IER);
- napi_schedule(&g_ptm_priv_data.itf[0].napi);
-#if defined(ENABLE_TMP_DBG) && ENABLE_TMP_DBG
- {
- volatile struct rx_descriptor *desc = &WAN_RX_DESC_BASE[g_ptm_priv_data.itf[0].rx_desc_pos];
-
- if ( desc->own ) { // PP32 hold
- err("invalid interrupt");
- }
- }
-#endif
- }
- if (isr & BIT(16)) {
- IFX_REG_W32_MASK(1 << 16, 0, MBOX_IGU1_IER);
- tasklet_hi_schedule(&g_swap_desc_tasklet);
- }
- if (isr & BIT(17)) {
- IFX_REG_W32_MASK(1 << 17, 0, MBOX_IGU1_IER);
- netif_wake_queue(g_net_dev[0]);
- }
-
- return IRQ_HANDLED;
-}
-
-static void do_swap_desc_tasklet(unsigned long arg)
-{
- int budget = 32;
- volatile struct tx_descriptor *desc;
- struct sk_buff *skb;
- unsigned int byteoff;
-
- while ( budget-- > 0 ) {
- if ( WAN_SWAP_DESC_BASE[g_ptm_priv_data.itf[0].tx_swap_desc_pos].own ) // if PP32 hold descriptor
- break;
-
- desc = &WAN_SWAP_DESC_BASE[g_ptm_priv_data.itf[0].tx_swap_desc_pos];
- if ( ++g_ptm_priv_data.itf[0].tx_swap_desc_pos == WAN_SWAP_DESC_NUM )
- g_ptm_priv_data.itf[0].tx_swap_desc_pos = 0;
-
- skb = get_skb_pointer(desc->dataptr);
- if ( skb != NULL )
- dev_kfree_skb_any(skb);
-
- skb = alloc_skb_tx(RX_MAX_BUFFER_SIZE);
- if ( skb == NULL )
- panic("can't allocate swap buffer for PPE firmware use\n");
- byteoff = (unsigned int)skb->data & (DATA_BUFFER_ALIGNMENT - 1);
- *(struct sk_buff **)((unsigned int)skb->data - byteoff - sizeof(struct sk_buff *)) = skb;
-
- desc->dataptr = (unsigned int)skb->data & 0x0FFFFFFF;
- desc->own = 1;
- }
-
- // clear interrupt
- IFX_REG_W32_MASK(0, 16, MBOX_IGU1_ISRC);
- // no more skb to be replaced
- if ( WAN_SWAP_DESC_BASE[g_ptm_priv_data.itf[0].tx_swap_desc_pos].own ) { // if PP32 hold descriptor
- IFX_REG_W32_MASK(0, 1 << 16, MBOX_IGU1_IER);
- return;
- }
-
- tasklet_hi_schedule(&g_swap_desc_tasklet);
- return;
-}
-
-
-static inline int ifx_ptm_version(char *buf)
-{
- int len = 0;
- unsigned int major, minor;
-
- ifx_ptm_get_fw_ver(&major, &minor);
-
- len += sprintf(buf + len, "PTM %d.%d.%d", IFX_PTM_VER_MAJOR, IFX_PTM_VER_MID, IFX_PTM_VER_MINOR);
- len += sprintf(buf + len, " PTM (E1) firmware version %d.%d\n", major, minor);
-
- return len;
-}
-
-static inline int init_priv_data(void)
-{
- int i, j;
-
- g_wanqos_en = wanqos_en ? wanqos_en : 8;
- if ( g_wanqos_en > 8 )
- g_wanqos_en = 8;
-
- for ( i = 0; i < ARRAY_SIZE(g_queue_gamma_map); i++ )
- {
- g_queue_gamma_map[i] = queue_gamma_map[i] & ((1 << g_wanqos_en) - 1);
- for ( j = 0; j < i; j++ )
- g_queue_gamma_map[i] &= ~g_queue_gamma_map[j];
- }
-
- memset(&g_ptm_priv_data, 0, sizeof(g_ptm_priv_data));
-
- {
- int max_packet_priority = ARRAY_SIZE(g_ptm_prio_queue_map);
- int tx_num_q;
- int q_step, q_accum, p_step;
-
- tx_num_q = __ETH_WAN_TX_QUEUE_NUM;
- q_step = tx_num_q - 1;
- p_step = max_packet_priority - 1;
- for ( j = 0, q_accum = 0; j < max_packet_priority; j++, q_accum += q_step )
- g_ptm_prio_queue_map[j] = q_step - (q_accum + (p_step >> 1)) / p_step;
- }
-
- return 0;
-}
-
-static inline void clear_priv_data(void)
-{
-}
-
-static inline int init_tables(void)
-{
- struct sk_buff *skb_pool[WAN_RX_DESC_NUM] = {0};
- struct cfg_std_data_len cfg_std_data_len = {0};
- struct tx_qos_cfg tx_qos_cfg = {0};
- struct psave_cfg psave_cfg = {0};
- struct eg_bwctrl_cfg eg_bwctrl_cfg = {0};
- struct test_mode test_mode = {0};
- struct rx_bc_cfg rx_bc_cfg = {0};
- struct tx_bc_cfg tx_bc_cfg = {0};
- struct gpio_mode gpio_mode = {0};
- struct gpio_wm_cfg gpio_wm_cfg = {0};
- struct rx_gamma_itf_cfg rx_gamma_itf_cfg = {0};
- struct tx_gamma_itf_cfg tx_gamma_itf_cfg = {0};
- struct wtx_qos_q_desc_cfg wtx_qos_q_desc_cfg = {0};
- struct rx_descriptor rx_desc = {0};
- struct tx_descriptor tx_desc = {0};
- int i;
-
- for ( i = 0; i < WAN_RX_DESC_NUM; i++ ) {
- skb_pool[i] = alloc_skb_rx();
- if ( skb_pool[i] == NULL )
- goto ALLOC_SKB_RX_FAIL;
- }
-
- cfg_std_data_len.byte_off = RX_HEAD_MAC_ADDR_ALIGNMENT; // this field replaces byte_off in rx descriptor of VDSL ingress
- cfg_std_data_len.data_len = 1600;
- *CFG_STD_DATA_LEN = cfg_std_data_len;
-
- tx_qos_cfg.time_tick = cgu_get_pp32_clock() / 62500; // 16 * (cgu_get_pp32_clock() / 1000000)
- tx_qos_cfg.overhd_bytes = 0;
- tx_qos_cfg.eth1_eg_qnum = __ETH_WAN_TX_QUEUE_NUM;
- tx_qos_cfg.eth1_burst_chk = 1;
- tx_qos_cfg.eth1_qss = 0;
- tx_qos_cfg.shape_en = 0; // disable
- tx_qos_cfg.wfq_en = 0; // strict priority
- *TX_QOS_CFG = tx_qos_cfg;
-
- psave_cfg.start_state = 0;
- psave_cfg.sleep_en = 1; // enable sleep mode
- *PSAVE_CFG = psave_cfg;
-
- eg_bwctrl_cfg.fdesc_wm = 16;
- eg_bwctrl_cfg.class_len = 128;
- *EG_BWCTRL_CFG = eg_bwctrl_cfg;
-
- //*GPIO_ADDR = (unsigned int)IFX_GPIO_P0_OUT;
- *GPIO_ADDR = (unsigned int)0x00000000; // disabled by default
-
- gpio_mode.gpio_bit_bc1 = 2;
- gpio_mode.gpio_bit_bc0 = 1;
- gpio_mode.gpio_bc1_en = 0;
- gpio_mode.gpio_bc0_en = 0;
- *GPIO_MODE = gpio_mode;
-
- gpio_wm_cfg.stop_wm_bc1 = 2;
- gpio_wm_cfg.start_wm_bc1 = 4;
- gpio_wm_cfg.stop_wm_bc0 = 2;
- gpio_wm_cfg.start_wm_bc0 = 4;
- *GPIO_WM_CFG = gpio_wm_cfg;
-
- test_mode.mib_clear_mode = 0;
- test_mode.test_mode = 0;
- *TEST_MODE = test_mode;
-
- rx_bc_cfg.local_state = 0;
- rx_bc_cfg.remote_state = 0;
- rx_bc_cfg.to_false_th = 7;
- rx_bc_cfg.to_looking_th = 3;
- *RX_BC_CFG(0) = rx_bc_cfg;
- *RX_BC_CFG(1) = rx_bc_cfg;
-
- tx_bc_cfg.fill_wm = 2;
- tx_bc_cfg.uflw_wm = 2;
- *TX_BC_CFG(0) = tx_bc_cfg;
- *TX_BC_CFG(1) = tx_bc_cfg;
-
- rx_gamma_itf_cfg.receive_state = 0;
- rx_gamma_itf_cfg.rx_min_len = 60;
- rx_gamma_itf_cfg.rx_pad_en = 1;
- rx_gamma_itf_cfg.rx_eth_fcs_ver_dis = 0;
- rx_gamma_itf_cfg.rx_rm_eth_fcs = 1;
- rx_gamma_itf_cfg.rx_tc_crc_ver_dis = 0;
- rx_gamma_itf_cfg.rx_tc_crc_size = 1;
- rx_gamma_itf_cfg.rx_eth_fcs_result = 0xC704DD7B;
- rx_gamma_itf_cfg.rx_tc_crc_result = 0x1D0F1D0F;
- rx_gamma_itf_cfg.rx_crc_cfg = 0x2500;
- rx_gamma_itf_cfg.rx_eth_fcs_init_value = 0xFFFFFFFF;
- rx_gamma_itf_cfg.rx_tc_crc_init_value = 0x0000FFFF;
- rx_gamma_itf_cfg.rx_max_len_sel = 0;
- rx_gamma_itf_cfg.rx_edit_num2 = 0;
- rx_gamma_itf_cfg.rx_edit_pos2 = 0;
- rx_gamma_itf_cfg.rx_edit_type2 = 0;
- rx_gamma_itf_cfg.rx_edit_en2 = 0;
- rx_gamma_itf_cfg.rx_edit_num1 = 0;
- rx_gamma_itf_cfg.rx_edit_pos1 = 0;
- rx_gamma_itf_cfg.rx_edit_type1 = 0;
- rx_gamma_itf_cfg.rx_edit_en1 = 0;
- rx_gamma_itf_cfg.rx_inserted_bytes_1l = 0;
- rx_gamma_itf_cfg.rx_inserted_bytes_1h = 0;
- rx_gamma_itf_cfg.rx_inserted_bytes_2l = 0;
- rx_gamma_itf_cfg.rx_inserted_bytes_2h = 0;
- rx_gamma_itf_cfg.rx_len_adj = -6;
- for ( i = 0; i < 4; i++ )
- *RX_GAMMA_ITF_CFG(i) = rx_gamma_itf_cfg;
-
- tx_gamma_itf_cfg.tx_len_adj = 6;
- tx_gamma_itf_cfg.tx_crc_off_adj = 6;
- tx_gamma_itf_cfg.tx_min_len = 0;
- tx_gamma_itf_cfg.tx_eth_fcs_gen_dis = 0;
- tx_gamma_itf_cfg.tx_tc_crc_size = 1;
- tx_gamma_itf_cfg.tx_crc_cfg = 0x2F00;
- tx_gamma_itf_cfg.tx_eth_fcs_init_value = 0xFFFFFFFF;
- tx_gamma_itf_cfg.tx_tc_crc_init_value = 0x0000FFFF;
- for ( i = 0; i < ARRAY_SIZE(g_queue_gamma_map); i++ ) {
- tx_gamma_itf_cfg.queue_mapping = g_queue_gamma_map[i];
- *TX_GAMMA_ITF_CFG(i) = tx_gamma_itf_cfg;
- }
-
- for ( i = 0; i < __ETH_WAN_TX_QUEUE_NUM; i++ ) {
- wtx_qos_q_desc_cfg.length = WAN_TX_DESC_NUM;
- wtx_qos_q_desc_cfg.addr = __ETH_WAN_TX_DESC_BASE(i);
- *WTX_QOS_Q_DESC_CFG(i) = wtx_qos_q_desc_cfg;
- }
-
- // default TX queue QoS config is all ZERO
-
- // TX Ctrl K Table
- IFX_REG_W32(0x90111293, TX_CTRL_K_TABLE(0));
- IFX_REG_W32(0x14959617, TX_CTRL_K_TABLE(1));
- IFX_REG_W32(0x18999A1B, TX_CTRL_K_TABLE(2));
- IFX_REG_W32(0x9C1D1E9F, TX_CTRL_K_TABLE(3));
- IFX_REG_W32(0xA02122A3, TX_CTRL_K_TABLE(4));
- IFX_REG_W32(0x24A5A627, TX_CTRL_K_TABLE(5));
- IFX_REG_W32(0x28A9AA2B, TX_CTRL_K_TABLE(6));
- IFX_REG_W32(0xAC2D2EAF, TX_CTRL_K_TABLE(7));
- IFX_REG_W32(0x30B1B233, TX_CTRL_K_TABLE(8));
- IFX_REG_W32(0xB43536B7, TX_CTRL_K_TABLE(9));
- IFX_REG_W32(0xB8393ABB, TX_CTRL_K_TABLE(10));
- IFX_REG_W32(0x3CBDBE3F, TX_CTRL_K_TABLE(11));
- IFX_REG_W32(0xC04142C3, TX_CTRL_K_TABLE(12));
- IFX_REG_W32(0x44C5C647, TX_CTRL_K_TABLE(13));
- IFX_REG_W32(0x48C9CA4B, TX_CTRL_K_TABLE(14));
- IFX_REG_W32(0xCC4D4ECF, TX_CTRL_K_TABLE(15));
-
- // init RX descriptor
- rx_desc.own = 1;
- rx_desc.c = 0;
- rx_desc.sop = 1;
- rx_desc.eop = 1;
- rx_desc.byteoff = RX_HEAD_MAC_ADDR_ALIGNMENT;
- rx_desc.datalen = RX_MAX_BUFFER_SIZE - RX_HEAD_MAC_ADDR_ALIGNMENT;
- for ( i = 0; i < WAN_RX_DESC_NUM; i++ ) {
- rx_desc.dataptr = (unsigned int)skb_pool[i]->data & 0x0FFFFFFF;
- WAN_RX_DESC_BASE[i] = rx_desc;
- }
-
- // init TX descriptor
- tx_desc.own = 0;
- tx_desc.c = 0;
- tx_desc.sop = 1;
- tx_desc.eop = 1;
- tx_desc.byteoff = 0;
- tx_desc.qid = 0;
- tx_desc.datalen = 0;
- tx_desc.small = 0;
- tx_desc.dataptr = 0;
- for ( i = 0; i < CPU_TO_WAN_TX_DESC_NUM; i++ )
- CPU_TO_WAN_TX_DESC_BASE[i] = tx_desc;
- for ( i = 0; i < WAN_TX_DESC_NUM_TOTAL; i++ )
- WAN_TX_DESC_BASE(0)[i] = tx_desc;
-
- // init Swap descriptor
- for ( i = 0; i < WAN_SWAP_DESC_NUM; i++ )
- WAN_SWAP_DESC_BASE[i] = tx_desc;
-
- // init fastpath TX descriptor
- tx_desc.own = 1;
- for ( i = 0; i < FASTPATH_TO_WAN_TX_DESC_NUM; i++ )
- FASTPATH_TO_WAN_TX_DESC_BASE[i] = tx_desc;
-
- return 0;
-
-ALLOC_SKB_RX_FAIL:
- while ( i-- > 0 )
- dev_kfree_skb_any(skb_pool[i]);
- return -1;
-}
-
-static inline void clear_tables(void)
-{
- struct sk_buff *skb;
- int i, j;
-
- for ( i = 0; i < WAN_RX_DESC_NUM; i++ ) {
- skb = get_skb_pointer(WAN_RX_DESC_BASE[i].dataptr);
- if ( skb != NULL )
- dev_kfree_skb_any(skb);
- }
-
- for ( i = 0; i < CPU_TO_WAN_TX_DESC_NUM; i++ ) {
- skb = get_skb_pointer(CPU_TO_WAN_TX_DESC_BASE[i].dataptr);
- if ( skb != NULL )
- dev_kfree_skb_any(skb);
- }
-
- for ( j = 0; j < 8; j++ )
- for ( i = 0; i < WAN_TX_DESC_NUM; i++ ) {
- skb = get_skb_pointer(WAN_TX_DESC_BASE(j)[i].dataptr);
- if ( skb != NULL )
- dev_kfree_skb_any(skb);
- }
-
- for ( i = 0; i < WAN_SWAP_DESC_NUM; i++ ) {
- skb = get_skb_pointer(WAN_SWAP_DESC_BASE[i].dataptr);
- if ( skb != NULL )
- dev_kfree_skb_any(skb);
- }
-
- for ( i = 0; i < FASTPATH_TO_WAN_TX_DESC_NUM; i++ ) {
- skb = get_skb_pointer(FASTPATH_TO_WAN_TX_DESC_BASE[i].dataptr);
- if ( skb != NULL )
- dev_kfree_skb_any(skb);
- }
-}
-
-static int ptm_showtime_enter(struct port_cell_info *port_cell, void *xdata_addr)
-{
- ASSERT(port_cell != NULL, "port_cell is NULL");
- ASSERT(xdata_addr != NULL, "xdata_addr is NULL");
-
- // TODO: ReTX set xdata_addr
- g_xdata_addr = xdata_addr;
-
- g_showtime = 1;
-
- IFX_REG_W32(0x0F, UTP_CFG);
-
- //#ifdef CONFIG_VR9
- // IFX_REG_W32_MASK(1 << 17, 0, FFSM_CFG0);
- //#endif
-
- printk("enter showtime\n");
-
- return 0;
-}
-
-static int ptm_showtime_exit(void)
-{
- if ( !g_showtime )
- return -1;
-
- //#ifdef CONFIG_VR9
- // IFX_REG_W32_MASK(0, 1 << 17, FFSM_CFG0);
- //#endif
-
- IFX_REG_W32(0x00, UTP_CFG);
-
- g_showtime = 0;
-
- // TODO: ReTX clean state
- g_xdata_addr = NULL;
-
- printk("leave showtime\n");
-
- return 0;
-}
-
-
-
-static int ifx_ptm_init(void)
-{
- int ret;
- int i;
- char ver_str[128];
- struct port_cell_info port_cell = {0};
-
- ret = init_priv_data();
- if ( ret != 0 ) {
- err("INIT_PRIV_DATA_FAIL");
- goto INIT_PRIV_DATA_FAIL;
- }
-
- ifx_ptm_init_chip();
- ret = init_tables();
- if ( ret != 0 ) {
- err("INIT_TABLES_FAIL");
- goto INIT_TABLES_FAIL;
- }
-
- for ( i = 0; i < ARRAY_SIZE(g_net_dev); i++ ) {
- g_net_dev[i] = alloc_netdev(0, g_net_dev_name[i], ether_setup);
- if ( g_net_dev[i] == NULL )
- goto ALLOC_NETDEV_FAIL;
- ptm_setup(g_net_dev[i], i);
- }
-
- for ( i = 0; i < ARRAY_SIZE(g_net_dev); i++ ) {
- ret = register_netdev(g_net_dev[i]);
- if ( ret != 0 )
- goto REGISTER_NETDEV_FAIL;
- }
-
- /* register interrupt handler */
- ret = request_irq(PPE_MAILBOX_IGU1_INT, mailbox_irq_handler, IRQF_DISABLED, "ptm_mailbox_isr", &g_ptm_priv_data);
- if ( ret ) {
- if ( ret == -EBUSY ) {
- err("IRQ may be occupied by other driver, please reconfig to disable it.");
- }
- else {
- err("request_irq fail");
- }
- goto REQUEST_IRQ_PPE_MAILBOX_IGU1_INT_FAIL;
- }
- disable_irq(PPE_MAILBOX_IGU1_INT);
-
- ret = ifx_pp32_start(0);
- if ( ret ) {
- err("ifx_pp32_start fail!");
- goto PP32_START_FAIL;
- }
- IFX_REG_W32(1 << 16, MBOX_IGU1_IER); // enable SWAP interrupt
- IFX_REG_W32(~0, MBOX_IGU1_ISRC);
-
- enable_irq(PPE_MAILBOX_IGU1_INT);
-
- ifx_mei_atm_showtime_check(&g_showtime, &port_cell, &g_xdata_addr);
-
- ifx_mei_atm_showtime_enter = ptm_showtime_enter;
- ifx_mei_atm_showtime_exit = ptm_showtime_exit;
-
- ifx_ptm_version(ver_str);
- printk(KERN_INFO "%s", ver_str);
-
- printk("ifxmips_ptm: PTM init succeed\n");
-
- return 0;
-
-PP32_START_FAIL:
- free_irq(PPE_MAILBOX_IGU1_INT, &g_ptm_priv_data);
-REQUEST_IRQ_PPE_MAILBOX_IGU1_INT_FAIL:
- i = ARRAY_SIZE(g_net_dev);
-REGISTER_NETDEV_FAIL:
- while ( i-- )
- unregister_netdev(g_net_dev[i]);
- i = ARRAY_SIZE(g_net_dev);
-ALLOC_NETDEV_FAIL:
- while ( i-- ) {
- free_netdev(g_net_dev[i]);
- g_net_dev[i] = NULL;
- }
-INIT_TABLES_FAIL:
-INIT_PRIV_DATA_FAIL:
- clear_priv_data();
- printk("ifxmips_ptm: PTM init failed\n");
- return ret;
-}
-
-static void __exit ifx_ptm_exit(void)
-{
- int i;
- ifx_mei_atm_showtime_enter = NULL;
- ifx_mei_atm_showtime_exit = NULL;
-
-
- ifx_pp32_stop(0);
-
- free_irq(PPE_MAILBOX_IGU1_INT, &g_ptm_priv_data);
-
- for ( i = 0; i < ARRAY_SIZE(g_net_dev); i++ )
- unregister_netdev(g_net_dev[i]);
-
- for ( i = 0; i < ARRAY_SIZE(g_net_dev); i++ ) {
- free_netdev(g_net_dev[i]);
- g_net_dev[i] = NULL;
- }
-
- clear_tables();
-
- ifx_ptm_uninit_chip();
-
- clear_priv_data();
-}
-
-#ifndef MODULE
-static int __init wanqos_en_setup(char *line)
-{
- wanqos_en = simple_strtoul(line, NULL, 0);
-
- if ( wanqos_en < 1 || wanqos_en > 8 )
- wanqos_en = 0;
-
- return 0;
-}
-
-static int __init queue_gamma_map_setup(char *line)
-{
- char *p;
- int i;
-
- for ( i = 0, p = line; i < ARRAY_SIZE(queue_gamma_map) && isxdigit(*p); i++ )
- {
- queue_gamma_map[i] = simple_strtoul(p, &p, 0);
- if ( *p == ',' || *p == ';' || *p == ':' )
- p++;
- }
-
- return 0;
-}
-#endif
-module_init(ifx_ptm_init);
-module_exit(ifx_ptm_exit);
-#ifndef MODULE
- __setup("wanqos_en=", wanqos_en_setup);
- __setup("queue_gamma_map=", queue_gamma_map_setup);
-#endif
-
-MODULE_LICENSE("GPL");
projects / openwrt.git / blobdiff