--- /dev/null
+/******************************************************************************
+**
+** FILE NAME : ifxmips_atm_core.c
+** PROJECT : UEIP
+** MODULES : ATM
+**
+** DATE : 7 Jul 2009
+** AUTHOR : Xu Liang
+** DESCRIPTION : ATM driver common source file (core functions)
+** 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
+*******************************************************************************/
+
+
+
+/*
+ * ####################################
+ * Version No.
+ * ####################################
+ */
+
+#define IFX_ATM_VER_MAJOR 1
+#define IFX_ATM_VER_MID 0
+#define IFX_ATM_VER_MINOR 8
+
+
+
+/*
+ * ####################################
+ * Head File
+ * ####################################
+ */
+
+/*
+ * Common Head File
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/version.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/proc_fs.h>
+#include <linux/init.h>
+#include <linux/ioctl.h>
+#include <linux/atmdev.h>
+#include <linux/atm.h>
+#include <linux/clk.h>
+
+/*
+ * Chip Specific Head File
+ */
+#include <lantiq.h>
+#include <lantiq_regs.h>
+#include "ifxmips_atm_core.h"
+
+
+
+/*
+ * ####################################
+ * Kernel Version Adaption
+ * ####################################
+ */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,11)
+ #define MODULE_PARM_ARRAY(a, b) module_param_array(a, int, NULL, 0)
+ #define MODULE_PARM(a, b) module_param(a, int, 0)
+#else
+ #define MODULE_PARM_ARRAY(a, b) MODULE_PARM(a, b)
+#endif
+
+
+
+/*!
+ \addtogroup IFXMIPS_ATM_MODULE_PARAMS
+ */
+/*@{*/
+/*
+ * ####################################
+ * Parameters to Configure PPE
+ * ####################################
+ */
+/*!
+ \brief QSB cell delay variation due to concurrency
+ */
+static int qsb_tau = 1; /* QSB cell delay variation due to concurrency */
+/*!
+ \brief QSB scheduler burst length
+ */
+static int qsb_srvm = 0x0F; /* QSB scheduler burst length */
+/*!
+ \brief QSB time step, all legal values are 1, 2, 4
+ */
+static int qsb_tstep = 4 ; /* QSB time step, all legal values are 1, 2, 4 */
+
+/*!
+ \brief Write descriptor delay
+ */
+static int write_descriptor_delay = 0x20; /* Write descriptor delay */
+
+/*!
+ \brief AAL5 padding byte ('~')
+ */
+static int aal5_fill_pattern = 0x007E; /* AAL5 padding byte ('~') */
+/*!
+ \brief Max frame size for RX
+ */
+static int aal5r_max_packet_size = 0x0700; /* Max frame size for RX */
+/*!
+ \brief Min frame size for RX
+ */
+static int aal5r_min_packet_size = 0x0000; /* Min frame size for RX */
+/*!
+ \brief Max frame size for TX
+ */
+static int aal5s_max_packet_size = 0x0700; /* Max frame size for TX */
+/*!
+ \brief Min frame size for TX
+ */
+static int aal5s_min_packet_size = 0x0000; /* Min frame size for TX */
+/*!
+ \brief Drop error packet in RX path
+ */
+static int aal5r_drop_error_packet = 1; /* Drop error packet in RX path */
+
+/*!
+ \brief Number of descriptors per DMA RX channel
+ */
+static int dma_rx_descriptor_length = 128; /* Number of descriptors per DMA RX channel */
+/*!
+ \brief Number of descriptors per DMA TX channel
+ */
+static int dma_tx_descriptor_length = 64; /* Number of descriptors per DMA TX channel */
+/*!
+ \brief PPE core clock cycles between descriptor write and effectiveness in external RAM
+ */
+static int dma_rx_clp1_descriptor_threshold = 38;
+/*@}*/
+
+MODULE_PARM(qsb_tau, "i");
+MODULE_PARM_DESC(qsb_tau, "Cell delay variation. Value must be > 0");
+MODULE_PARM(qsb_srvm, "i");
+MODULE_PARM_DESC(qsb_srvm, "Maximum burst size");
+MODULE_PARM(qsb_tstep, "i");
+MODULE_PARM_DESC(qsb_tstep, "n*32 cycles per sbs cycles n=1,2,4");
+
+MODULE_PARM(write_descriptor_delay, "i");
+MODULE_PARM_DESC(write_descriptor_delay, "PPE core clock cycles between descriptor write and effectiveness in external RAM");
+
+MODULE_PARM(aal5_fill_pattern, "i");
+MODULE_PARM_DESC(aal5_fill_pattern, "Filling pattern (PAD) for AAL5 frames");
+MODULE_PARM(aal5r_max_packet_size, "i");
+MODULE_PARM_DESC(aal5r_max_packet_size, "Max packet size in byte for downstream AAL5 frames");
+MODULE_PARM(aal5r_min_packet_size, "i");
+MODULE_PARM_DESC(aal5r_min_packet_size, "Min packet size in byte for downstream AAL5 frames");
+MODULE_PARM(aal5s_max_packet_size, "i");
+MODULE_PARM_DESC(aal5s_max_packet_size, "Max packet size in byte for upstream AAL5 frames");
+MODULE_PARM(aal5s_min_packet_size, "i");
+MODULE_PARM_DESC(aal5s_min_packet_size, "Min packet size in byte for upstream AAL5 frames");
+MODULE_PARM(aal5r_drop_error_packet, "i");
+MODULE_PARM_DESC(aal5r_drop_error_packet, "Non-zero value to drop error packet for downstream");
+
+MODULE_PARM(dma_rx_descriptor_length, "i");
+MODULE_PARM_DESC(dma_rx_descriptor_length, "Number of descriptor assigned to DMA RX channel (>16)");
+MODULE_PARM(dma_tx_descriptor_length, "i");
+MODULE_PARM_DESC(dma_tx_descriptor_length, "Number of descriptor assigned to DMA TX channel (>16)");
+MODULE_PARM(dma_rx_clp1_descriptor_threshold, "i");
+MODULE_PARM_DESC(dma_rx_clp1_descriptor_threshold, "Descriptor threshold for cells with cell loss priority 1");
+
+
+
+/*
+ * ####################################
+ * Definition
+ * ####################################
+ */
+
+#define DUMP_SKB_LEN ~0
+
+
+
+/*
+ * ####################################
+ * Declaration
+ * ####################################
+ */
+
+/*
+ * Network Operations
+ */
+static int ppe_ioctl(struct atm_dev *, unsigned int, void *);
+static int ppe_open(struct atm_vcc *);
+static void ppe_close(struct atm_vcc *);
+static int ppe_send(struct atm_vcc *, struct sk_buff *);
+static int ppe_send_oam(struct atm_vcc *, void *, int);
+static int ppe_change_qos(struct atm_vcc *, struct atm_qos *, int);
+
+/*
+ * ADSL LED
+ */
+static INLINE int adsl_led_flash(void);
+
+/*
+ * 64-bit operation used by MIB calculation
+ */
+static INLINE void u64_add_u32(ppe_u64_t, unsigned int, ppe_u64_t *);
+
+/*
+ * buffer manage functions
+ */
+static INLINE struct sk_buff* alloc_skb_rx(void);
+static INLINE struct sk_buff* alloc_skb_tx(unsigned int);
+struct sk_buff* atm_alloc_tx(struct atm_vcc *, unsigned int);
+static INLINE void atm_free_tx_skb_vcc(struct sk_buff *, struct atm_vcc *);
+static INLINE struct sk_buff *get_skb_rx_pointer(unsigned int);
+static INLINE int get_tx_desc(unsigned int);
+
+/*
+ * mailbox handler and signal function
+ */
+static INLINE void mailbox_oam_rx_handler(void);
+static INLINE void mailbox_aal_rx_handler(void);
+#if defined(ENABLE_TASKLET) && ENABLE_TASKLET
+ static void do_ppe_tasklet(unsigned long);
+#endif
+static irqreturn_t mailbox_irq_handler(int, void *);
+static INLINE void mailbox_signal(unsigned int, int);
+
+/*
+ * QSB & HTU setting functions
+ */
+static void set_qsb(struct atm_vcc *, struct atm_qos *, unsigned int);
+static void qsb_global_set(void);
+static INLINE void set_htu_entry(unsigned int, unsigned int, unsigned int, int, int);
+static INLINE void clear_htu_entry(unsigned int);
+static void validate_oam_htu_entry(void);
+static void invalidate_oam_htu_entry(void);
+
+/*
+ * look up for connection ID
+ */
+static INLINE int find_vpi(unsigned int);
+static INLINE int find_vpivci(unsigned int, unsigned int);
+static INLINE int find_vcc(struct atm_vcc *);
+
+/*
+ * Debug Functions
+ */
+#if defined(DEBUG_DUMP_SKB) && DEBUG_DUMP_SKB
+ static void dump_skb(struct sk_buff *, u32, char *, int, int, int);
+#else
+ #define dump_skb(skb, len, title, port, ch, is_tx) do {} while (0)
+#endif
+
+/*
+ * Proc File Functions
+ */
+static INLINE void proc_file_create(void);
+static INLINE void proc_file_delete(void);
+static int proc_read_version(char *, char **, off_t, int, int *, void *);
+static int proc_read_mib(char *, char **, off_t, int, int *, void *);
+static int proc_write_mib(struct file *, const char *, unsigned long, void *);
+#if defined(ENABLE_DBG_PROC) && ENABLE_DBG_PROC
+ static int proc_read_dbg(char *, char **, off_t, int, int *, void *);
+ static int proc_write_dbg(struct file *, const char *, unsigned long, void *);
+#endif
+#if defined(ENABLE_FW_PROC) && ENABLE_FW_PROC
+ static int proc_read_htu(char *, char **, off_t, int, int *, void *);
+ static int proc_read_txq(char *, char **, off_t, int, int *, void *);
+#endif
+
+/*
+ * Proc Help Functions
+ */
+static int stricmp(const char *, const char *);
+#if defined(ENABLE_DBG_PROC) && ENABLE_DBG_PROC
+ static int strincmp(const char *, const char *, int);
+#endif
+static INLINE int ifx_atm_version(char *);
+//static INLINE int print_reset_domain(char *, int);
+//static INLINE int print_reset_handler(char *, int, ifx_rcu_handler_t *);
+
+/*
+ * Init & clean-up functions
+ */
+#ifdef MODULE
+ static INLINE void reset_ppe(void);
+#endif
+static INLINE void check_parameters(void);
+static INLINE int init_priv_data(void);
+static INLINE void clear_priv_data(void);
+static INLINE void init_rx_tables(void);
+static INLINE void init_tx_tables(void);
+
+/*
+ * Exteranl Function
+ */
+#if defined(CONFIG_IFX_OAM) || defined(CONFIG_IFX_OAM_MODULE)
+ extern void ifx_push_oam(unsigned char *);
+#else
+ static inline void ifx_push_oam(unsigned char *dummy) {}
+#endif
+#if defined(CONFIG_IFXMIPS_DSL_CPE_MEI) || defined(CONFIG_IFXMIPS_DSL_CPE_MEI_MODULE)
+ extern int ifx_mei_atm_led_blink(void);
+ extern int ifx_mei_atm_showtime_check(int *is_showtime, struct port_cell_info *port_cell, void **xdata_addr);
+#else
+ static inline int ifx_mei_atm_led_blink(void) { return IFX_SUCCESS; }
+ static inline int ifx_mei_atm_showtime_check(int *is_showtime, struct port_cell_info *port_cell, void **xdata_addr)
+ {
+ if ( is_showtime != NULL )
+ *is_showtime = 0;
+ return IFX_SUCCESS;
+ }
+#endif
+
+/*
+ * External variable
+ */
+extern struct sk_buff* (*ifx_atm_alloc_tx)(struct atm_vcc *, unsigned int);
+#if defined(CONFIG_IFXMIPS_DSL_CPE_MEI) || defined(CONFIG_IFXMIPS_DSL_CPE_MEI_MODULE)
+ extern int (*ifx_mei_atm_showtime_enter)(struct port_cell_info *, void *);
+ extern int (*ifx_mei_atm_showtime_exit)(void);
+#else
+ int (*ifx_mei_atm_showtime_enter)(struct port_cell_info *, void *) = NULL;
+ EXPORT_SYMBOL(ifx_mei_atm_showtime_enter);
+ int (*ifx_mei_atm_showtime_exit)(void) = NULL;
+ EXPORT_SYMBOL(ifx_mei_atm_showtime_exit);
+#endif
+
+
+
+/*
+ * ####################################
+ * Local Variable
+ * ####################################
+ */
+
+static struct atm_priv_data g_atm_priv_data;
+
+static struct atmdev_ops g_ifx_atm_ops = {
+ .open = ppe_open,
+ .close = ppe_close,
+ .ioctl = ppe_ioctl,
+ .send = ppe_send,
+ .send_oam = ppe_send_oam,
+ .change_qos = ppe_change_qos,
+ .owner = THIS_MODULE,
+};
+
+#if defined(ENABLE_TASKLET) && ENABLE_TASKLET
+ DECLARE_TASKLET(g_dma_tasklet, do_ppe_tasklet, 0);
+#endif
+
+static int g_showtime = 0;
+static void *g_xdata_addr = NULL;
+
+unsigned int ifx_atm_dbg_enable = 0;
+
+static struct proc_dir_entry* g_atm_dir = NULL;
+
+
+
+/*
+ * ####################################
+ * Local Function
+ * ####################################
+ */
+
+static int ppe_ioctl(struct atm_dev *dev, unsigned int cmd, void *arg)
+{
+ int ret = 0;
+ atm_cell_ifEntry_t mib_cell;
+ atm_aal5_ifEntry_t mib_aal5;
+ atm_aal5_vcc_x_t mib_vcc;
+ unsigned int value;
+ int conn;
+
+ if ( _IOC_TYPE(cmd) != PPE_ATM_IOC_MAGIC
+ || _IOC_NR(cmd) >= PPE_ATM_IOC_MAXNR )
+ return -ENOTTY;
+
+ if ( _IOC_DIR(cmd) & _IOC_READ )
+ ret = !access_ok(VERIFY_WRITE, arg, _IOC_SIZE(cmd));
+ else if ( _IOC_DIR(cmd) & _IOC_WRITE )
+ ret = !access_ok(VERIFY_READ, arg, _IOC_SIZE(cmd));
+ if ( ret )
+ return -EFAULT;
+
+ switch ( cmd )
+ {
+ case PPE_ATM_MIB_CELL: /* cell level MIB */
+ /* These MIB should be read at ARC side, now put zero only. */
+ mib_cell.ifHCInOctets_h = 0;
+ mib_cell.ifHCInOctets_l = 0;
+ mib_cell.ifHCOutOctets_h = 0;
+ mib_cell.ifHCOutOctets_l = 0;
+ mib_cell.ifInErrors = 0;
+ mib_cell.ifInUnknownProtos = WAN_MIB_TABLE->wrx_drophtu_cell;
+ mib_cell.ifOutErrors = 0;
+
+ ret = sizeof(mib_cell) - copy_to_user(arg, &mib_cell, sizeof(mib_cell));
+ break;
+
+ case PPE_ATM_MIB_AAL5: /* AAL5 MIB */
+ value = WAN_MIB_TABLE->wrx_total_byte;
+ u64_add_u32(g_atm_priv_data.wrx_total_byte, value - g_atm_priv_data.prev_wrx_total_byte, &g_atm_priv_data.wrx_total_byte);
+ g_atm_priv_data.prev_wrx_total_byte = value;
+ mib_aal5.ifHCInOctets_h = g_atm_priv_data.wrx_total_byte.h;
+ mib_aal5.ifHCInOctets_l = g_atm_priv_data.wrx_total_byte.l;
+
+ value = WAN_MIB_TABLE->wtx_total_byte;
+ u64_add_u32(g_atm_priv_data.wtx_total_byte, value - g_atm_priv_data.prev_wtx_total_byte, &g_atm_priv_data.wtx_total_byte);
+ g_atm_priv_data.prev_wtx_total_byte = value;
+ mib_aal5.ifHCOutOctets_h = g_atm_priv_data.wtx_total_byte.h;
+ mib_aal5.ifHCOutOctets_l = g_atm_priv_data.wtx_total_byte.l;
+
+ mib_aal5.ifInUcastPkts = g_atm_priv_data.wrx_pdu;
+ mib_aal5.ifOutUcastPkts = WAN_MIB_TABLE->wtx_total_pdu;
+ mib_aal5.ifInErrors = WAN_MIB_TABLE->wrx_err_pdu;
+ mib_aal5.ifInDiscards = WAN_MIB_TABLE->wrx_dropdes_pdu + g_atm_priv_data.wrx_drop_pdu;
+ mib_aal5.ifOutErros = g_atm_priv_data.wtx_err_pdu;
+ mib_aal5.ifOutDiscards = g_atm_priv_data.wtx_drop_pdu;
+
+ ret = sizeof(mib_aal5) - copy_to_user(arg, &mib_aal5, sizeof(mib_aal5));
+ break;
+
+ case PPE_ATM_MIB_VCC: /* VCC related MIB */
+ copy_from_user(&mib_vcc, arg, sizeof(mib_vcc));
+ conn = find_vpivci(mib_vcc.vpi, mib_vcc.vci);
+ if ( conn >= 0 )
+ {
+ mib_vcc.mib_vcc.aal5VccCrcErrors = g_atm_priv_data.conn[conn].aal5_vcc_crc_err;
+ mib_vcc.mib_vcc.aal5VccOverSizedSDUs = g_atm_priv_data.conn[conn].aal5_vcc_oversize_sdu;
+ mib_vcc.mib_vcc.aal5VccSarTimeOuts = 0; /* no timer support */
+ ret = sizeof(mib_vcc) - copy_to_user(arg, &mib_vcc, sizeof(mib_vcc));
+ }
+ else
+ ret = -EINVAL;
+ break;
+
+ default:
+ ret = -ENOIOCTLCMD;
+ }
+
+ return ret;
+}
+
+static int ppe_open(struct atm_vcc *vcc)
+{
+ int ret;
+ short vpi = vcc->vpi;
+ int vci = vcc->vci;
+ struct port *port = &g_atm_priv_data.port[(int)vcc->dev->dev_data];
+ int conn;
+ int f_enable_irq = 0;
+#if defined(ENABLE_ATM_RETX) && ENABLE_ATM_RETX
+ int sys_flag;
+#endif
+
+ if ( vcc->qos.aal != ATM_AAL5 && vcc->qos.aal != ATM_AAL0 )
+ return -EPROTONOSUPPORT;
+
+ /* check bandwidth */
+ if ( (vcc->qos.txtp.traffic_class == ATM_CBR && vcc->qos.txtp.max_pcr > (port->tx_max_cell_rate - port->tx_current_cell_rate))
+ || (vcc->qos.txtp.traffic_class == ATM_VBR_RT && vcc->qos.txtp.max_pcr > (port->tx_max_cell_rate - port->tx_current_cell_rate))
+ || (vcc->qos.txtp.traffic_class == ATM_VBR_NRT && vcc->qos.txtp.scr > (port->tx_max_cell_rate - port->tx_current_cell_rate))
+ || (vcc->qos.txtp.traffic_class == ATM_UBR_PLUS && vcc->qos.txtp.min_pcr > (port->tx_max_cell_rate - port->tx_current_cell_rate)) )
+ {
+ ret = -EINVAL;
+ goto PPE_OPEN_EXIT;
+ }
+
+ /* check existing vpi,vci */
+ conn = find_vpivci(vpi, vci);
+ if ( conn >= 0 ) {
+ ret = -EADDRINUSE;
+ goto PPE_OPEN_EXIT;
+ }
+
+ /* check whether it need to enable irq */
+ if ( g_atm_priv_data.conn_table == 0 )
+ f_enable_irq = 1;
+
+ /* allocate connection */
+ for ( conn = 0; conn < MAX_PVC_NUMBER; conn++ ) {
+ if ( test_and_set_bit(conn, &g_atm_priv_data.conn_table) == 0 ) {
+ g_atm_priv_data.conn[conn].vcc = vcc;
+ break;
+ }
+ }
+ if ( conn == MAX_PVC_NUMBER )
+ {
+ ret = -EINVAL;
+ goto PPE_OPEN_EXIT;
+ }
+
+ /* reserve bandwidth */
+ switch ( vcc->qos.txtp.traffic_class ) {
+ case ATM_CBR:
+ case ATM_VBR_RT:
+ port->tx_current_cell_rate += vcc->qos.txtp.max_pcr;
+ break;
+ case ATM_VBR_NRT:
+ port->tx_current_cell_rate += vcc->qos.txtp.scr;
+ break;
+ case ATM_UBR_PLUS:
+ port->tx_current_cell_rate += vcc->qos.txtp.min_pcr;
+ break;
+ }
+
+ /* set qsb */
+ set_qsb(vcc, &vcc->qos, conn);
+
+ /* update atm_vcc structure */
+ vcc->itf = (int)vcc->dev->dev_data;
+ vcc->vpi = vpi;
+ vcc->vci = vci;
+ set_bit(ATM_VF_READY, &vcc->flags);
+
+ /* enable irq */
+ if (f_enable_irq ) {
+ ifx_atm_alloc_tx = atm_alloc_tx;
+
+ *MBOX_IGU1_ISRC = (1 << RX_DMA_CH_AAL) | (1 << RX_DMA_CH_OAM);
+ *MBOX_IGU1_IER = (1 << RX_DMA_CH_AAL) | (1 << RX_DMA_CH_OAM);
+
+ enable_irq(PPE_MAILBOX_IGU1_INT);
+ }
+
+ /* set port */
+ WTX_QUEUE_CONFIG(conn)->sbid = (int)vcc->dev->dev_data;
+
+ /* set htu entry */
+ set_htu_entry(vpi, vci, conn, vcc->qos.aal == ATM_AAL5 ? 1 : 0, 0);
+
+#if defined(ENABLE_ATM_RETX) && ENABLE_ATM_RETX
+ // ReTX: occupy second QID
+ local_irq_save(sys_flag);
+ if ( g_retx_htu && vcc->qos.aal == ATM_AAL5 )
+ {
+ int retx_conn = (conn + 8) % 16; // ReTX queue
+
+ if ( retx_conn < MAX_PVC_NUMBER && test_and_set_bit(retx_conn, &g_atm_priv_data.conn_table) == 0 ) {
+ g_atm_priv_data.conn[retx_conn].vcc = vcc;
+ set_htu_entry(vpi, vci, retx_conn, vcc->qos.aal == ATM_AAL5 ? 1 : 0, 1);
+ }
+ }
+ local_irq_restore(sys_flag);
+#endif
+
+ ret = 0;
+
+PPE_OPEN_EXIT:
+ return ret;
+}
+
+static void ppe_close(struct atm_vcc *vcc)
+{
+ int conn;
+ struct port *port;
+ struct connection *connection;
+
+ if ( vcc == NULL )
+ return;
+
+ /* get connection id */
+ conn = find_vcc(vcc);
+ if ( conn < 0 ) {
+ err("can't find vcc");
+ goto PPE_CLOSE_EXIT;
+ }
+ connection = &g_atm_priv_data.conn[conn];
+ port = &g_atm_priv_data.port[connection->port];
+
+ /* clear htu */
+ clear_htu_entry(conn);
+
+ /* release connection */
+ clear_bit(conn, &g_atm_priv_data.conn_table);
+ connection->vcc = NULL;
+ connection->aal5_vcc_crc_err = 0;
+ connection->aal5_vcc_oversize_sdu = 0;
+
+ /* disable irq */
+ if ( g_atm_priv_data.conn_table == 0 ) {
+ disable_irq(PPE_MAILBOX_IGU1_INT);
+ ifx_atm_alloc_tx = NULL;
+ }
+
+ /* release bandwidth */
+ switch ( vcc->qos.txtp.traffic_class )
+ {
+ case ATM_CBR:
+ case ATM_VBR_RT:
+ port->tx_current_cell_rate -= vcc->qos.txtp.max_pcr;
+ break;
+ case ATM_VBR_NRT:
+ port->tx_current_cell_rate -= vcc->qos.txtp.scr;
+ break;
+ case ATM_UBR_PLUS:
+ port->tx_current_cell_rate -= vcc->qos.txtp.min_pcr;
+ break;
+ }
+
+PPE_CLOSE_EXIT:
+ return;
+}
+
+static int ppe_send(struct atm_vcc *vcc, struct sk_buff *skb)
+{
+ int ret;
+ int conn;
+ int desc_base;
+ struct tx_descriptor reg_desc = {0};
+
+ if ( vcc == NULL || skb == NULL )
+ return -EINVAL;
+
+ skb_get(skb);
+ atm_free_tx_skb_vcc(skb, vcc);
+
+ conn = find_vcc(vcc);
+ if ( conn < 0 ) {
+ ret = -EINVAL;
+ goto FIND_VCC_FAIL;
+ }
+
+ if ( !g_showtime ) {
+ err("not in showtime");
+ ret = -EIO;
+ goto PPE_SEND_FAIL;
+ }
+
+ if ( vcc->qos.aal == ATM_AAL5 ) {
+ int byteoff;
+ int datalen;
+ struct tx_inband_header *header;
+
+ datalen = skb->len;
+ byteoff = (unsigned int)skb->data & (DATA_BUFFER_ALIGNMENT - 1);
+
+ if ( skb_headroom(skb) < byteoff + TX_INBAND_HEADER_LENGTH ) {
+ struct sk_buff *new_skb;
+
+ new_skb = alloc_skb_tx(datalen);
+ if ( new_skb == NULL ) {
+ err("ALLOC_SKB_TX_FAIL");
+ ret = -ENOMEM;
+ goto PPE_SEND_FAIL;
+ }
+ skb_put(new_skb, datalen);
+ memcpy(new_skb->data, skb->data, datalen);
+ dev_kfree_skb_any(skb);
+ skb = new_skb;
+ byteoff = (unsigned int)skb->data & (DATA_BUFFER_ALIGNMENT - 1);
+ }
+
+ skb_push(skb, byteoff + TX_INBAND_HEADER_LENGTH);
+
+ header = (struct tx_inband_header *)skb->data;
+
+ /* setup inband trailer */
+ header->uu = 0;
+ header->cpi = 0;
+ header->pad = aal5_fill_pattern;
+ header->res1 = 0;
+
+ /* setup cell header */
+ header->clp = (vcc->atm_options & ATM_ATMOPT_CLP) ? 1 : 0;
+ header->pti = ATM_PTI_US0;
+ header->vci = vcc->vci;
+ header->vpi = vcc->vpi;
+ header->gfc = 0;
+
+ /* setup descriptor */
+ reg_desc.dataptr = (unsigned int)skb->data >> 2;
+ reg_desc.datalen = datalen;
+ reg_desc.byteoff = byteoff;
+ reg_desc.iscell = 0;
+ }
+ else {
+ /* if data pointer is not aligned, allocate new sk_buff */
+ if ( ((unsigned int)skb->data & (DATA_BUFFER_ALIGNMENT - 1)) != 0 ) {
+ struct sk_buff *new_skb;
+
+ err("skb->data not aligned");
+
+ new_skb = alloc_skb_tx(skb->len);
+ if ( new_skb == NULL ) {
+ err("ALLOC_SKB_TX_FAIL");
+ ret = -ENOMEM;
+ goto PPE_SEND_FAIL;
+ }
+ skb_put(new_skb, skb->len);
+ memcpy(new_skb->data, skb->data, skb->len);
+ dev_kfree_skb_any(skb);
+ skb = new_skb;
+ }
+
+ reg_desc.dataptr = (unsigned int)skb->data >> 2;
+ reg_desc.datalen = skb->len;
+ reg_desc.byteoff = 0;
+ reg_desc.iscell = 1;
+ }
+
+ reg_desc.own = 1;
+ reg_desc.c = 1;
+ reg_desc.sop = reg_desc.eop = 1;
+
+ desc_base = get_tx_desc(conn);
+ if ( desc_base < 0 ) {
+ err("ALLOC_TX_CONNECTION_FAIL");
+ ret = -EIO;
+ goto PPE_SEND_FAIL;
+ }
+
+ if ( vcc->stats )
+ atomic_inc(&vcc->stats->tx);
+ if ( vcc->qos.aal == ATM_AAL5 )
+ g_atm_priv_data.wtx_pdu++;
+
+ /* update descriptor send pointer */
+ if ( g_atm_priv_data.conn[conn].tx_skb[desc_base] != NULL )
+ dev_kfree_skb_any(g_atm_priv_data.conn[conn].tx_skb[desc_base]);
+ g_atm_priv_data.conn[conn].tx_skb[desc_base] = skb;
+
+ /* write discriptor to memory and write back cache */
+ g_atm_priv_data.conn[conn].tx_desc[desc_base] = reg_desc;
+ dma_cache_wback((unsigned long)skb->data, skb->len);
+
+ dump_skb(skb, DUMP_SKB_LEN, (char *)__func__, 0, conn, 1);
+
+ mailbox_signal(conn, 1);
+
+ adsl_led_flash();
+
+ return 0;
+
+FIND_VCC_FAIL:
+ err("FIND_VCC_FAIL");
+ g_atm_priv_data.wtx_err_pdu++;
+ dev_kfree_skb_any(skb);
+ return ret;
+
+PPE_SEND_FAIL:
+ if ( vcc->qos.aal == ATM_AAL5 )
+ g_atm_priv_data.wtx_drop_pdu++;
+ if ( vcc->stats )
+ atomic_inc(&vcc->stats->tx_err);
+ dev_kfree_skb_any(skb);
+ return ret;
+}
+
+static int ppe_send_oam(struct atm_vcc *vcc, void *cell, int flags)
+{
+ int conn;
+ struct uni_cell_header *uni_cell_header = (struct uni_cell_header *)cell;
+ int desc_base;
+ struct sk_buff *skb;
+ struct tx_descriptor reg_desc = {0};
+
+ if ( ((uni_cell_header->pti == ATM_PTI_SEGF5 || uni_cell_header->pti == ATM_PTI_E2EF5)
+ && find_vpivci(uni_cell_header->vpi, uni_cell_header->vci) < 0)
+ || ((uni_cell_header->vci == 0x03 || uni_cell_header->vci == 0x04)
+ && find_vpi(uni_cell_header->vpi) < 0) )
+ return -EINVAL;
+
+ if ( !g_showtime ) {
+ err("not in showtime");
+ return -EIO;
+ }
+
+ conn = find_vcc(vcc);
+ if ( conn < 0 ) {
+ err("FIND_VCC_FAIL");
+ return -EINVAL;
+ }
+
+ skb = alloc_skb_tx(CELL_SIZE);
+ if ( skb == NULL ) {
+ err("ALLOC_SKB_TX_FAIL");
+ return -ENOMEM;
+ }
+ memcpy(skb->data, cell, CELL_SIZE);
+
+ reg_desc.dataptr = (unsigned int)skb->data >> 2;
+ reg_desc.datalen = CELL_SIZE;
+ reg_desc.byteoff = 0;
+ reg_desc.iscell = 1;
+
+ reg_desc.own = 1;
+ reg_desc.c = 1;
+ reg_desc.sop = reg_desc.eop = 1;
+
+ desc_base = get_tx_desc(conn);
+ if ( desc_base < 0 ) {
+ dev_kfree_skb_any(skb);
+ err("ALLOC_TX_CONNECTION_FAIL");
+ return -EIO;
+ }
+
+ if ( vcc->stats )
+ atomic_inc(&vcc->stats->tx);
+
+ /* update descriptor send pointer */
+ if ( g_atm_priv_data.conn[conn].tx_skb[desc_base] != NULL )
+ dev_kfree_skb_any(g_atm_priv_data.conn[conn].tx_skb[desc_base]);
+ g_atm_priv_data.conn[conn].tx_skb[desc_base] = skb;
+
+ /* write discriptor to memory and write back cache */
+ g_atm_priv_data.conn[conn].tx_desc[desc_base] = reg_desc;
+ dma_cache_wback((unsigned long)skb->data, CELL_SIZE);
+
+ dump_skb(skb, DUMP_SKB_LEN, (char *)__func__, 0, conn, 1);
+
+ mailbox_signal(conn, 1);
+
+ adsl_led_flash();
+
+ return 0;
+}
+
+static int ppe_change_qos(struct atm_vcc *vcc, struct atm_qos *qos, int flags)
+{
+ int conn;
+
+ if ( vcc == NULL || qos == NULL )
+ return -EINVAL;
+
+ conn = find_vcc(vcc);
+ if ( conn < 0 )
+ return -EINVAL;
+
+ set_qsb(vcc, qos, conn);
+
+ return 0;
+}
+
+static INLINE int adsl_led_flash(void)
+{
+ return ifx_mei_atm_led_blink();
+}
+
+/*
+ * Description:
+ * Add a 32-bit value to 64-bit value, and put result in a 64-bit variable.
+ * Input:
+ * opt1 --- ppe_u64_t, first operand, a 64-bit unsigned integer value
+ * opt2 --- unsigned int, second operand, a 32-bit unsigned integer value
+ * ret --- ppe_u64_t, pointer to a variable to hold result
+ * Output:
+ * none
+ */
+static INLINE void u64_add_u32(ppe_u64_t opt1, unsigned int opt2, ppe_u64_t *ret)
+{
+ ret->l = opt1.l + opt2;
+ if ( ret->l < opt1.l || ret->l < opt2 )
+ ret->h++;
+}
+
+static INLINE struct sk_buff* alloc_skb_rx(void)
+{
+ struct sk_buff *skb;
+
+ skb = dev_alloc_skb(RX_DMA_CH_AAL_BUF_SIZE + DATA_BUFFER_ALIGNMENT);
+ if ( skb != NULL ) {
+ /* must be burst length 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;
+ /* 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 header and padding */
+ size += TX_INBAND_HEADER_LENGTH + MAX_TX_PACKET_ALIGN_BYTES + MAX_TX_PACKET_PADDING_BYTES;
+ size &= ~(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)) + TX_INBAND_HEADER_LENGTH);
+ return skb;
+}
+
+struct sk_buff* atm_alloc_tx(struct atm_vcc *vcc, unsigned int size)
+{
+ int conn;
+ struct sk_buff *skb;
+
+ /* oversize packet */
+ if ( size > aal5s_max_packet_size ) {
+ err("atm_alloc_tx: oversize packet");
+ return NULL;
+ }
+ /* send buffer overflow */
+ if ( atomic_read(&sk_atm(vcc)->sk_wmem_alloc) && !atm_may_send(vcc, size) ) {
+ err("atm_alloc_tx: send buffer overflow");
+ return NULL;
+ }
+ conn = find_vcc(vcc);
+ if ( conn < 0 ) {
+ err("atm_alloc_tx: unknown VCC");
+ return NULL;
+ }
+
+ skb = dev_alloc_skb(size);
+ if ( skb == NULL ) {
+ err("atm_alloc_tx: sk buffer is used up");
+ return NULL;
+ }
+
+ atomic_add(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc);
+
+ return skb;
+}
+
+static INLINE void atm_free_tx_skb_vcc(struct sk_buff *skb, struct atm_vcc *vcc)
+{
+ if ( vcc->pop != NULL )
+ vcc->pop(vcc, skb);
+ else
+ dev_kfree_skb_any(skb);
+}
+
+static INLINE struct sk_buff *get_skb_rx_pointer(unsigned int dataptr)
+{
+ unsigned int skb_dataptr;
+ struct sk_buff *skb;
+
+ skb_dataptr = ((dataptr - 1) << 2) | 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 | KSEG1) == ((dataptr << 2) | 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 conn)
+{
+ int desc_base = -1;
+ struct connection *p_conn = &g_atm_priv_data.conn[conn];
+
+ if ( p_conn->tx_desc[p_conn->tx_desc_pos].own == 0 ) {
+ desc_base = p_conn->tx_desc_pos;
+ if ( ++(p_conn->tx_desc_pos) == dma_tx_descriptor_length )
+ p_conn->tx_desc_pos = 0;
+ }
+
+ return desc_base;
+}
+
+static INLINE void mailbox_oam_rx_handler(void)
+{
+ unsigned int vlddes = WRX_DMA_CHANNEL_CONFIG(RX_DMA_CH_OAM)->vlddes;
+ struct rx_descriptor reg_desc;
+ struct uni_cell_header *header;
+ int conn;
+ struct atm_vcc *vcc;
+ unsigned int i;
+
+ for ( i = 0; i < vlddes; i++ ) {
+ do {
+ reg_desc = g_atm_priv_data.oam_desc[g_atm_priv_data.oam_desc_pos];
+ } while ( reg_desc.own || !reg_desc.c ); // keep test OWN and C bit until data is ready
+
+ header = (struct uni_cell_header *)&g_atm_priv_data.oam_buf[g_atm_priv_data.oam_desc_pos * RX_DMA_CH_OAM_BUF_SIZE];
+
+ if ( header->pti == ATM_PTI_SEGF5 || header->pti == ATM_PTI_E2EF5 )
+ conn = find_vpivci(header->vpi, header->vci);
+ else if ( header->vci == 0x03 || header->vci == 0x04 )
+ conn = find_vpi(header->vpi);
+ else
+ conn = -1;
+
+ if ( conn >= 0 && g_atm_priv_data.conn[conn].vcc != NULL ) {
+ vcc = g_atm_priv_data.conn[conn].vcc;
+
+ if ( vcc->push_oam != NULL )
+ vcc->push_oam(vcc, header);
+ else
+ ifx_push_oam((unsigned char *)header);
+
+ adsl_led_flash();
+ }
+
+ reg_desc.byteoff = 0;
+ reg_desc.datalen = RX_DMA_CH_OAM_BUF_SIZE;
+ reg_desc.own = 1;
+ reg_desc.c = 0;
+
+ g_atm_priv_data.oam_desc[g_atm_priv_data.oam_desc_pos] = reg_desc;
+ if ( ++g_atm_priv_data.oam_desc_pos == RX_DMA_CH_OAM_DESC_LEN )
+ g_atm_priv_data.oam_desc_pos = 0;
+
+ mailbox_signal(RX_DMA_CH_OAM, 0);
+ }
+}
+
+static INLINE void mailbox_aal_rx_handler(void)
+{
+ unsigned int vlddes = WRX_DMA_CHANNEL_CONFIG(RX_DMA_CH_AAL)->vlddes;
+ struct rx_descriptor reg_desc;
+ int conn;
+ struct atm_vcc *vcc;
+ struct sk_buff *skb, *new_skb;
+ struct rx_inband_trailer *trailer;
+ unsigned int i;
+
+ for ( i = 0; i < vlddes; i++ ) {
+ do {
+ reg_desc = g_atm_priv_data.aal_desc[g_atm_priv_data.aal_desc_pos];
+ } while ( reg_desc.own || !reg_desc.c ); // keep test OWN and C bit until data is ready
+
+ conn = reg_desc.id;
+
+ if ( g_atm_priv_data.conn[conn].vcc != NULL ) {
+ vcc = g_atm_priv_data.conn[conn].vcc;
+
+ skb = get_skb_rx_pointer(reg_desc.dataptr);
+
+ if ( reg_desc.err ) {
+ if ( vcc->qos.aal == ATM_AAL5 ) {
+ trailer = (struct rx_inband_trailer *)((unsigned int)skb->data + ((reg_desc.byteoff + reg_desc.datalen + MAX_RX_PACKET_PADDING_BYTES) & ~MAX_RX_PACKET_PADDING_BYTES));
+ if ( trailer->stw_crc )
+ g_atm_priv_data.conn[conn].aal5_vcc_crc_err++;
+ if ( trailer->stw_ovz )
+ g_atm_priv_data.conn[conn].aal5_vcc_oversize_sdu++;
+ g_atm_priv_data.wrx_drop_pdu++;
+ }
+ if ( vcc->stats ) {
+ atomic_inc(&vcc->stats->rx_drop);
+ atomic_inc(&vcc->stats->rx_err);
+ }
+ }
+ else if ( atm_charge(vcc, skb->truesize) ) {
+ new_skb = alloc_skb_rx();
+ if ( new_skb != NULL ) {
+ skb_reserve(skb, reg_desc.byteoff);
+ skb_put(skb, reg_desc.datalen);
+ ATM_SKB(skb)->vcc = vcc;
+
+ dump_skb(skb, DUMP_SKB_LEN, (char *)__func__, 0, conn, 0);
+
+ vcc->push(vcc, skb);
+
+ if ( vcc->qos.aal == ATM_AAL5 )
+ g_atm_priv_data.wrx_pdu++;
+ if ( vcc->stats )
+ atomic_inc(&vcc->stats->rx);
+ adsl_led_flash();
+
+ reg_desc.dataptr = (unsigned int)new_skb->data >> 2;
+ }
+ else {
+ atm_return(vcc, skb->truesize);
+ if ( vcc->qos.aal == ATM_AAL5 )
+ g_atm_priv_data.wrx_drop_pdu++;
+ if ( vcc->stats )
+ atomic_inc(&vcc->stats->rx_drop);
+ }
+ }
+ else {
+ if ( vcc->qos.aal == ATM_AAL5 )
+ g_atm_priv_data.wrx_drop_pdu++;
+ if ( vcc->stats )
+ atomic_inc(&vcc->stats->rx_drop);
+ }
+ }
+ else {
+ g_atm_priv_data.wrx_drop_pdu++;
+ }
+
+ reg_desc.byteoff = 0;
+ reg_desc.datalen = RX_DMA_CH_AAL_BUF_SIZE;
+ reg_desc.own = 1;
+ reg_desc.c = 0;
+
+ g_atm_priv_data.aal_desc[g_atm_priv_data.aal_desc_pos] = reg_desc;
+ if ( ++g_atm_priv_data.aal_desc_pos == dma_rx_descriptor_length )
+ g_atm_priv_data.aal_desc_pos = 0;
+
+ mailbox_signal(RX_DMA_CH_AAL, 0);
+ }
+}
+
+#if defined(ENABLE_TASKLET) && ENABLE_TASKLET
+static void do_ppe_tasklet(unsigned long arg)
+{
+ *MBOX_IGU1_ISRC = *MBOX_IGU1_ISR;
+ mailbox_oam_rx_handler();
+ mailbox_aal_rx_handler();
+ if ( (*MBOX_IGU1_ISR & ((1 << RX_DMA_CH_AAL) | (1 << RX_DMA_CH_OAM))) != 0 )
+ tasklet_schedule(&g_dma_tasklet);
+ else
+ enable_irq(PPE_MAILBOX_IGU1_INT);
+}
+#endif
+
+static irqreturn_t mailbox_irq_handler(int irq, void *dev_id)
+{
+ if ( !*MBOX_IGU1_ISR )
+ return IRQ_HANDLED;
+
+#if defined(ENABLE_TASKLET) && ENABLE_TASKLET
+ disable_irq(PPE_MAILBOX_IGU1_INT);
+ tasklet_schedule(&g_dma_tasklet);
+#else
+ *MBOX_IGU1_ISRC = *MBOX_IGU1_ISR;
+ mailbox_oam_rx_handler();
+ mailbox_aal_rx_handler();
+#endif
+
+ return IRQ_HANDLED;
+}
+
+static INLINE void mailbox_signal(unsigned int queue, int is_tx)
+{
+ if ( is_tx ) {
+ while ( MBOX_IGU3_ISR_ISR(queue + FIRST_QSB_QID + 16) );
+ *MBOX_IGU3_ISRS = MBOX_IGU3_ISRS_SET(queue + FIRST_QSB_QID + 16);
+ }
+ else {
+ while ( MBOX_IGU3_ISR_ISR(queue) );
+ *MBOX_IGU3_ISRS = MBOX_IGU3_ISRS_SET(queue);
+ }
+}
+
+static void set_qsb(struct atm_vcc *vcc, struct atm_qos *qos, unsigned int queue)
+{
+ struct clk *clk = clk_get(0, "fpi");
+ unsigned int qsb_clk = clk_get_rate(clk);
+ unsigned int qsb_qid = queue + FIRST_QSB_QID;
+ union qsb_queue_parameter_table qsb_queue_parameter_table = {{0}};
+ union qsb_queue_vbr_parameter_table qsb_queue_vbr_parameter_table = {{0}};
+ unsigned int tmp;
+
+#if defined(DEBUG_QOS) && DEBUG_QOS
+ if ( (ifx_atm_dbg_enable & DBG_ENABLE_MASK_DUMP_QOS) ) {
+ static char *str_traffic_class[9] = {
+ "ATM_NONE",
+ "ATM_UBR",
+ "ATM_CBR",
+ "ATM_VBR",
+ "ATM_ABR",
+ "ATM_ANYCLASS",
+ "ATM_VBR_RT",
+ "ATM_UBR_PLUS",
+ "ATM_MAX_PCR"
+ };
+ printk(KERN_INFO "QoS Parameters:\n");
+ printk(KERN_INFO "\tAAL : %d\n", qos->aal);
+ printk(KERN_INFO "\tTX Traffic Class: %s\n", str_traffic_class[qos->txtp.traffic_class]);
+ printk(KERN_INFO "\tTX Max PCR : %d\n", qos->txtp.max_pcr);
+ printk(KERN_INFO "\tTX Min PCR : %d\n", qos->txtp.min_pcr);
+ printk(KERN_INFO "\tTX PCR : %d\n", qos->txtp.pcr);
+ printk(KERN_INFO "\tTX Max CDV : %d\n", qos->txtp.max_cdv);
+ printk(KERN_INFO "\tTX Max SDU : %d\n", qos->txtp.max_sdu);
+ printk(KERN_INFO "\tTX SCR : %d\n", qos->txtp.scr);
+ printk(KERN_INFO "\tTX MBS : %d\n", qos->txtp.mbs);
+ printk(KERN_INFO "\tTX CDV : %d\n", qos->txtp.cdv);
+ printk(KERN_INFO "\tRX Traffic Class: %s\n", str_traffic_class[qos->rxtp.traffic_class]);
+ printk(KERN_INFO "\tRX Max PCR : %d\n", qos->rxtp.max_pcr);
+ printk(KERN_INFO "\tRX Min PCR : %d\n", qos->rxtp.min_pcr);
+ printk(KERN_INFO "\tRX PCR : %d\n", qos->rxtp.pcr);
+ printk(KERN_INFO "\tRX Max CDV : %d\n", qos->rxtp.max_cdv);
+ printk(KERN_INFO "\tRX Max SDU : %d\n", qos->rxtp.max_sdu);
+ printk(KERN_INFO "\tRX SCR : %d\n", qos->rxtp.scr);
+ printk(KERN_INFO "\tRX MBS : %d\n", qos->rxtp.mbs);
+ printk(KERN_INFO "\tRX CDV : %d\n", qos->rxtp.cdv);
+ }
+#endif // defined(DEBUG_QOS) && DEBUG_QOS
+
+ /*
+ * Peak Cell Rate (PCR) Limiter
+ */
+ if ( qos->txtp.max_pcr == 0 )
+ qsb_queue_parameter_table.bit.tp = 0; /* disable PCR limiter */
+ else {
+ /* peak cell rate would be slightly lower than requested [maximum_rate / pcr = (qsb_clock / 8) * (time_step / 4) / pcr] */
+ tmp = ((qsb_clk * qsb_tstep) >> 5) / qos->txtp.max_pcr + 1;
+ /* check if overflow takes place */
+ qsb_queue_parameter_table.bit.tp = tmp > QSB_TP_TS_MAX ? QSB_TP_TS_MAX : tmp;
+ }
+
+ // A funny issue. Create two PVCs, one UBR and one UBR with max_pcr.
+ // Send packets to these two PVCs at same time, it trigger strange behavior.
+ // In A1, RAM from 0x80000000 to 0x0x8007FFFF was corrupted with fixed pattern 0x00000000 0x40000000.
+ // In A4, PPE firmware keep emiting unknown cell and do not respond to driver.
+ // To work around, create UBR always with max_pcr.
+ // If user want to create UBR without max_pcr, we give a default one larger than line-rate.
+ if ( qos->txtp.traffic_class == ATM_UBR && qsb_queue_parameter_table.bit.tp == 0 ) {
+ int port = g_atm_priv_data.conn[queue].port;
+ unsigned int max_pcr = g_atm_priv_data.port[port].tx_max_cell_rate + 1000;
+
+ tmp = ((qsb_clk * qsb_tstep) >> 5) / max_pcr + 1;
+ if ( tmp > QSB_TP_TS_MAX )
+ tmp = QSB_TP_TS_MAX;
+ else if ( tmp < 1 )
+ tmp = 1;
+ qsb_queue_parameter_table.bit.tp = tmp;
+ }
+
+ /*
+ * Weighted Fair Queueing Factor (WFQF)
+ */
+ switch ( qos->txtp.traffic_class ) {
+ case ATM_CBR:
+ case ATM_VBR_RT:
+ /* real time queue gets weighted fair queueing bypass */
+ qsb_queue_parameter_table.bit.wfqf = 0;
+ break;
+ case ATM_VBR_NRT:
+ case ATM_UBR_PLUS:
+ /* WFQF calculation here is based on virtual cell rates, to reduce granularity for high rates */
+ /* WFQF is maximum cell rate / garenteed cell rate */
+ /* wfqf = qsb_minimum_cell_rate * QSB_WFQ_NONUBR_MAX / requested_minimum_peak_cell_rate */
+ if ( qos->txtp.min_pcr == 0 )
+ qsb_queue_parameter_table.bit.wfqf = QSB_WFQ_NONUBR_MAX;
+ else
+ {
+ tmp = QSB_GCR_MIN * QSB_WFQ_NONUBR_MAX / qos->txtp.min_pcr;
+ if ( tmp == 0 )
+ qsb_queue_parameter_table.bit.wfqf = 1;
+ else if ( tmp > QSB_WFQ_NONUBR_MAX )
+ qsb_queue_parameter_table.bit.wfqf = QSB_WFQ_NONUBR_MAX;
+ else
+ qsb_queue_parameter_table.bit.wfqf = tmp;
+ }
+ break;
+ default:
+ case ATM_UBR:
+ qsb_queue_parameter_table.bit.wfqf = QSB_WFQ_UBR_BYPASS;
+ }
+
+ /*
+ * Sustained Cell Rate (SCR) Leaky Bucket Shaper VBR.0/VBR.1
+ */
+ if ( qos->txtp.traffic_class == ATM_VBR_RT || qos->txtp.traffic_class == ATM_VBR_NRT ) {
+ if ( qos->txtp.scr == 0 ) {
+ /* disable shaper */
+ qsb_queue_vbr_parameter_table.bit.taus = 0;
+ qsb_queue_vbr_parameter_table.bit.ts = 0;
+ }
+ else {
+ /* Cell Loss Priority (CLP) */
+ if ( (vcc->atm_options & ATM_ATMOPT_CLP) )
+ /* CLP1 */
+ qsb_queue_parameter_table.bit.vbr = 1;
+ else
+ /* CLP0 */
+ qsb_queue_parameter_table.bit.vbr = 0;
+ /* Rate Shaper Parameter (TS) and Burst Tolerance Parameter for SCR (tauS) */
+ tmp = ((qsb_clk * qsb_tstep) >> 5) / qos->txtp.scr + 1;
+ qsb_queue_vbr_parameter_table.bit.ts = tmp > QSB_TP_TS_MAX ? QSB_TP_TS_MAX : tmp;
+ tmp = (qos->txtp.mbs - 1) * (qsb_queue_vbr_parameter_table.bit.ts - qsb_queue_parameter_table.bit.tp) / 64;
+ if ( tmp == 0 )
+ qsb_queue_vbr_parameter_table.bit.taus = 1;
+ else if ( tmp > QSB_TAUS_MAX )
+ qsb_queue_vbr_parameter_table.bit.taus = QSB_TAUS_MAX;
+ else
+ qsb_queue_vbr_parameter_table.bit.taus = tmp;
+ }
+ }
+ else {
+ qsb_queue_vbr_parameter_table.bit.taus = 0;
+ qsb_queue_vbr_parameter_table.bit.ts = 0;
+ }
+
+ /* Queue Parameter Table (QPT) */
+ *QSB_RTM = QSB_RTM_DM_SET(QSB_QPT_SET_MASK);
+ *QSB_RTD = QSB_RTD_TTV_SET(qsb_queue_parameter_table.dword);
+ *QSB_RAMAC = QSB_RAMAC_RW_SET(QSB_RAMAC_RW_WRITE) | QSB_RAMAC_TSEL_SET(QSB_RAMAC_TSEL_QPT) | QSB_RAMAC_LH_SET(QSB_RAMAC_LH_LOW) | QSB_RAMAC_TESEL_SET(qsb_qid);
+#if defined(DEBUG_QOS) && DEBUG_QOS
+ if ( (ifx_atm_dbg_enable & DBG_ENABLE_MASK_DUMP_QOS) )
+ printk("QPT: QSB_RTM (%08X) = 0x%08X, QSB_RTD (%08X) = 0x%08X, QSB_RAMAC (%08X) = 0x%08X\n", (unsigned int)QSB_RTM, *QSB_RTM, (unsigned int)QSB_RTD, *QSB_RTD, (unsigned int)QSB_RAMAC, *QSB_RAMAC);
+#endif
+ /* Queue VBR Paramter Table (QVPT) */
+ *QSB_RTM = QSB_RTM_DM_SET(QSB_QVPT_SET_MASK);
+ *QSB_RTD = QSB_RTD_TTV_SET(qsb_queue_vbr_parameter_table.dword);
+ *QSB_RAMAC = QSB_RAMAC_RW_SET(QSB_RAMAC_RW_WRITE) | QSB_RAMAC_TSEL_SET(QSB_RAMAC_TSEL_VBR) | QSB_RAMAC_LH_SET(QSB_RAMAC_LH_LOW) | QSB_RAMAC_TESEL_SET(qsb_qid);
+#if defined(DEBUG_QOS) && DEBUG_QOS
+ if ( (ifx_atm_dbg_enable & DBG_ENABLE_MASK_DUMP_QOS) )
+ printk("QVPT: QSB_RTM (%08X) = 0x%08X, QSB_RTD (%08X) = 0x%08X, QSB_RAMAC (%08X) = 0x%08X\n", (unsigned int)QSB_RTM, *QSB_RTM, (unsigned int)QSB_RTD, *QSB_RTD, (unsigned int)QSB_RAMAC, *QSB_RAMAC);
+#endif
+
+#if defined(DEBUG_QOS) && DEBUG_QOS
+ if ( (ifx_atm_dbg_enable & DBG_ENABLE_MASK_DUMP_QOS) ) {
+ printk("set_qsb\n");
+ printk(" qsb_clk = %lu\n", (unsigned long)qsb_clk);
+ printk(" qsb_queue_parameter_table.bit.tp = %d\n", (int)qsb_queue_parameter_table.bit.tp);
+ printk(" qsb_queue_parameter_table.bit.wfqf = %d (0x%08X)\n", (int)qsb_queue_parameter_table.bit.wfqf, (int)qsb_queue_parameter_table.bit.wfqf);
+ printk(" qsb_queue_parameter_table.bit.vbr = %d\n", (int)qsb_queue_parameter_table.bit.vbr);
+ printk(" qsb_queue_parameter_table.dword = 0x%08X\n", (int)qsb_queue_parameter_table.dword);
+ printk(" qsb_queue_vbr_parameter_table.bit.ts = %d\n", (int)qsb_queue_vbr_parameter_table.bit.ts);
+ printk(" qsb_queue_vbr_parameter_table.bit.taus = %d\n", (int)qsb_queue_vbr_parameter_table.bit.taus);
+ printk(" qsb_queue_vbr_parameter_table.dword = 0x%08X\n", (int)qsb_queue_vbr_parameter_table.dword);
+ }
+#endif
+}
+
+static void qsb_global_set(void)
+{
+ struct clk *clk = clk_get(0, "fpi");
+ unsigned int qsb_clk = clk_get_rate(clk);
+ int i;
+ unsigned int tmp1, tmp2, tmp3;
+
+ *QSB_ICDV = QSB_ICDV_TAU_SET(qsb_tau);
+ *QSB_SBL = QSB_SBL_SBL_SET(qsb_srvm);
+ *QSB_CFG = QSB_CFG_TSTEPC_SET(qsb_tstep >> 1);
+#if defined(DEBUG_QOS) && DEBUG_QOS
+ if ( (ifx_atm_dbg_enable & DBG_ENABLE_MASK_DUMP_QOS) ) {
+ printk("qsb_clk = %u\n", qsb_clk);
+ printk("QSB_ICDV (%08X) = %d (%d), QSB_SBL (%08X) = %d (%d), QSB_CFG (%08X) = %d (%d)\n", (unsigned int)QSB_ICDV, *QSB_ICDV, QSB_ICDV_TAU_SET(qsb_tau), (unsigned int)QSB_SBL, *QSB_SBL, QSB_SBL_SBL_SET(qsb_srvm), (unsigned int)QSB_CFG, *QSB_CFG, QSB_CFG_TSTEPC_SET(qsb_tstep >> 1));
+ }
+#endif
+
+ /*
+ * set SCT and SPT per port
+ */
+ for ( i = 0; i < ATM_PORT_NUMBER; i++ ) {
+ if ( g_atm_priv_data.port[i].tx_max_cell_rate != 0 ) {
+ tmp1 = ((qsb_clk * qsb_tstep) >> 1) / g_atm_priv_data.port[i].tx_max_cell_rate;
+ tmp2 = tmp1 >> 6; /* integer value of Tsb */
+ tmp3 = (tmp1 & ((1 << 6) - 1)) + 1; /* fractional part of Tsb */
+ /* carry over to integer part (?) */
+ if ( tmp3 == (1 << 6) )
+ {
+ tmp3 = 0;
+ tmp2++;
+ }
+ if ( tmp2 == 0 )
+ tmp2 = tmp3 = 1;
+ /* 1. set mask */
+ /* 2. write value to data transfer register */
+ /* 3. start the tranfer */
+ /* SCT (FracRate) */
+ *QSB_RTM = QSB_RTM_DM_SET(QSB_SET_SCT_MASK);
+ *QSB_RTD = QSB_RTD_TTV_SET(tmp3);
+ *QSB_RAMAC = QSB_RAMAC_RW_SET(QSB_RAMAC_RW_WRITE) | QSB_RAMAC_TSEL_SET(QSB_RAMAC_TSEL_SCT) | QSB_RAMAC_LH_SET(QSB_RAMAC_LH_LOW) | QSB_RAMAC_TESEL_SET(i & 0x01);
+#if defined(DEBUG_QOS) && DEBUG_QOS
+ if ( (ifx_atm_dbg_enable & DBG_ENABLE_MASK_DUMP_QOS) )
+ printk("SCT: QSB_RTM (%08X) = 0x%08X, QSB_RTD (%08X) = 0x%08X, QSB_RAMAC (%08X) = 0x%08X\n", (unsigned int)QSB_RTM, *QSB_RTM, (unsigned int)QSB_RTD, *QSB_RTD, (unsigned int)QSB_RAMAC, *QSB_RAMAC);
+#endif
+ /* SPT (SBV + PN + IntRage) */
+ *QSB_RTM = QSB_RTM_DM_SET(QSB_SET_SPT_MASK);
+ *QSB_RTD = QSB_RTD_TTV_SET(QSB_SPT_SBV_VALID | QSB_SPT_PN_SET(i & 0x01) | QSB_SPT_INTRATE_SET(tmp2));
+ *QSB_RAMAC = QSB_RAMAC_RW_SET(QSB_RAMAC_RW_WRITE) | QSB_RAMAC_TSEL_SET(QSB_RAMAC_TSEL_SPT) | QSB_RAMAC_LH_SET(QSB_RAMAC_LH_LOW) | QSB_RAMAC_TESEL_SET(i & 0x01);
+#if defined(DEBUG_QOS) && DEBUG_QOS
+ if ( (ifx_atm_dbg_enable & DBG_ENABLE_MASK_DUMP_QOS) )
+ printk("SPT: QSB_RTM (%08X) = 0x%08X, QSB_RTD (%08X) = 0x%08X, QSB_RAMAC (%08X) = 0x%08X\n", (unsigned int)QSB_RTM, *QSB_RTM, (unsigned int)QSB_RTD, *QSB_RTD, (unsigned int)QSB_RAMAC, *QSB_RAMAC);
+#endif
+ }
+ }
+}
+
+static INLINE void set_htu_entry(unsigned int vpi, unsigned int vci, unsigned int queue, int aal5, int is_retx)
+{
+ struct htu_entry htu_entry = { res1: 0x00,
+ clp: is_retx ? 0x01 : 0x00,
+ pid: g_atm_priv_data.conn[queue].port & 0x01,
+ vpi: vpi,
+ vci: vci,
+ pti: 0x00,
+ vld: 0x01};
+
+ struct htu_mask htu_mask = { set: 0x01,
+#if !defined(ENABLE_ATM_RETX) || !ENABLE_ATM_RETX
+ clp: 0x01,
+ pid_mask: 0x02,
+#else
+ clp: g_retx_htu ? 0x00 : 0x01,
+ pid_mask: RETX_MODE_CFG->retx_en ? 0x03 : 0x02,
+#endif
+ vpi_mask: 0x00,
+#if !defined(ENABLE_ATM_RETX) || !ENABLE_ATM_RETX
+ vci_mask: 0x0000,
+#else
+ vci_mask: RETX_MODE_CFG->retx_en ? 0xFF00 : 0x0000,
+#endif
+ pti_mask: 0x03, // 0xx, user data
+ clear: 0x00};
+
+ struct htu_result htu_result = {res1: 0x00,
+ cellid: queue,
+ res2: 0x00,
+ type: aal5 ? 0x00 : 0x01,
+ ven: 0x01,
+ res3: 0x00,
+ qid: queue};
+
+ *HTU_RESULT(queue + OAM_HTU_ENTRY_NUMBER) = htu_result;
+ *HTU_MASK(queue + OAM_HTU_ENTRY_NUMBER) = htu_mask;
+ *HTU_ENTRY(queue + OAM_HTU_ENTRY_NUMBER) = htu_entry;
+}
+
+static INLINE void clear_htu_entry(unsigned int queue)
+{
+ HTU_ENTRY(queue + OAM_HTU_ENTRY_NUMBER)->vld = 0;
+}
+
+static void validate_oam_htu_entry(void)
+{
+ HTU_ENTRY(OAM_F4_SEG_HTU_ENTRY)->vld = 1;
+ HTU_ENTRY(OAM_F4_TOT_HTU_ENTRY)->vld = 1;
+ HTU_ENTRY(OAM_F5_HTU_ENTRY)->vld = 1;
+#if defined(ENABLE_ATM_RETX) && ENABLE_ATM_RETX
+ HTU_ENTRY(OAM_ARQ_HTU_ENTRY)->vld = 1;
+#endif
+}
+
+static void invalidate_oam_htu_entry(void)
+{
+ HTU_ENTRY(OAM_F4_SEG_HTU_ENTRY)->vld = 0;
+ HTU_ENTRY(OAM_F4_TOT_HTU_ENTRY)->vld = 0;
+ HTU_ENTRY(OAM_F5_HTU_ENTRY)->vld = 0;
+#if defined(ENABLE_ATM_RETX) && ENABLE_ATM_RETX
+ HTU_ENTRY(OAM_ARQ_HTU_ENTRY)->vld = 0;
+#endif
+}
+
+static INLINE int find_vpi(unsigned int vpi)
+{
+ int i;
+ unsigned int bit;
+
+ for ( i = 0, bit = 1; i < MAX_PVC_NUMBER; i++, bit <<= 1 ) {
+ if ( (g_atm_priv_data.conn_table & bit) != 0
+ && g_atm_priv_data.conn[i].vcc != NULL
+ && vpi == g_atm_priv_data.conn[i].vcc->vpi )
+ return i;
+ }
+
+ return -1;
+}
+
+static INLINE int find_vpivci(unsigned int vpi, unsigned int vci)
+{
+ int i;
+ unsigned int bit;
+
+ for ( i = 0, bit = 1; i < MAX_PVC_NUMBER; i++, bit <<= 1 ) {
+ if ( (g_atm_priv_data.conn_table & bit) != 0
+ && g_atm_priv_data.conn[i].vcc != NULL
+ && vpi == g_atm_priv_data.conn[i].vcc->vpi
+ && vci == g_atm_priv_data.conn[i].vcc->vci )
+ return i;
+ }
+
+ return -1;
+}
+
+static INLINE int find_vcc(struct atm_vcc *vcc)
+{
+ int i;
+ unsigned int bit;
+
+ for ( i = 0, bit = 1; i < MAX_PVC_NUMBER; i++, bit <<= 1 ) {
+ if ( (g_atm_priv_data.conn_table & bit) != 0
+ && g_atm_priv_data.conn[i].vcc == vcc )
+ return i;
+ }
+
+ return -1;
+}
+
+#if defined(DEBUG_DUMP_SKB) && DEBUG_DUMP_SKB
+static void dump_skb(struct sk_buff *skb, u32 len, char *title, int port, int ch, int is_tx)
+{
+ int i;
+
+ if ( !(ifx_atm_dbg_enable & (is_tx ? DBG_ENABLE_MASK_DUMP_SKB_TX : DBG_ENABLE_MASK_DUMP_SKB_RX)) )
+ return;
+
+ if ( skb->len < len )
+ len = skb->len;
+
+ if ( len > RX_DMA_CH_AAL_BUF_SIZE ) {
+ printk("too big data length: skb = %08x, skb->data = %08x, skb->len = %d\n", (u32)skb, (u32)skb->data, skb->len);
+ return;
+ }
+
+ if ( ch >= 0 )
+ printk("%s (port %d, ch %d)\n", title, port, ch);
+ else
+ printk("%s\n", title);
+ printk(" skb->data = %08X, skb->tail = %08X, skb->len = %d\n", (u32)skb->data, (u32)skb->tail, (int)skb->len);
+ for ( i = 1; i <= len; i++ ) {
+ if ( i % 16 == 1 )
+ printk(" %4d:", i - 1);
+ printk(" %02X", (int)(*((char*)skb->data + i - 1) & 0xFF));
+ if ( i % 16 == 0 )
+ printk("\n");
+ }
+ if ( (i - 1) % 16 != 0 )
+ printk("\n");
+}
+#endif
+
+static INLINE void proc_file_create(void)
+{
+#if defined(ENABLE_DBG_PROC) && ENABLE_DBG_PROC
+ struct proc_dir_entry *res;
+#endif
+
+ g_atm_dir = proc_mkdir("driver/ifx_atm", NULL);
+
+ create_proc_read_entry("version",
+ 0,
+ g_atm_dir,
+ proc_read_version,
+ NULL);
+
+ res = create_proc_entry("mib",
+ 0,
+ g_atm_dir);
+ if ( res != NULL ) {
+ res->read_proc = proc_read_mib;
+ res->write_proc = proc_write_mib;
+ }
+
+#if defined(ENABLE_DBG_PROC) && ENABLE_DBG_PROC
+ res = create_proc_entry("dbg",
+ 0,
+ g_atm_dir);
+ if ( res != NULL ) {
+ res->read_proc = proc_read_dbg;
+ res->write_proc = proc_write_dbg;
+ }
+#endif
+
+#if defined(ENABLE_FW_PROC) && ENABLE_FW_PROC
+ create_proc_read_entry("htu",
+ 0,
+ g_atm_dir,
+ proc_read_htu,
+ NULL);
+
+ create_proc_read_entry("txq",
+ 0,
+ g_atm_dir,
+ proc_read_txq,
+ NULL);
+#endif
+}
+
+static INLINE void proc_file_delete(void)
+{
+#if defined(ENABLE_FW_PROC) && ENABLE_FW_PROC
+ remove_proc_entry("txq", g_atm_dir);
+
+ remove_proc_entry("htu", g_atm_dir);
+#endif
+
+#if defined(ENABLE_DBG_PROC) && ENABLE_DBG_PROC
+ remove_proc_entry("dbg", g_atm_dir);
+#endif
+
+ remove_proc_entry("version", g_atm_dir);
+
+ remove_proc_entry("driver/ifx_atm", NULL);
+}
+
+static int proc_read_version(char *buf, char **start, off_t offset, int count, int *eof, void *data)
+{
+ int len = 0;
+
+ len += ifx_atm_version(buf + len);
+
+ if ( offset >= len ) {
+ *start = buf;
+ *eof = 1;
+ return 0;
+ }
+ *start = buf + offset;
+ if ( (len -= offset) > count )
+ return count;
+ *eof = 1;
+ return len;
+}
+
+static int proc_read_mib(char *page, char **start, off_t off, int count, int *eof, void *data)
+{
+ int len = 0;
+
+ len += sprintf(page + off + len, "Firmware\n");
+ len += sprintf(page + off + len, " wrx_drophtu_cell = %u\n", WAN_MIB_TABLE->wrx_drophtu_cell);
+ len += sprintf(page + off + len, " wrx_dropdes_pdu = %u\n", WAN_MIB_TABLE->wrx_dropdes_pdu);
+ len += sprintf(page + off + len, " wrx_correct_pdu = %u\n", WAN_MIB_TABLE->wrx_correct_pdu);
+ len += sprintf(page + off + len, " wrx_err_pdu = %u\n", WAN_MIB_TABLE->wrx_err_pdu);
+ len += sprintf(page + off + len, " wrx_dropdes_cell = %u\n", WAN_MIB_TABLE->wrx_dropdes_cell);
+ len += sprintf(page + off + len, " wrx_correct_cell = %u\n", WAN_MIB_TABLE->wrx_correct_cell);
+ len += sprintf(page + off + len, " wrx_err_cell = %u\n", WAN_MIB_TABLE->wrx_err_cell);
+ len += sprintf(page + off + len, " wrx_total_byte = %u\n", WAN_MIB_TABLE->wrx_total_byte);
+ len += sprintf(page + off + len, " wtx_total_pdu = %u\n", WAN_MIB_TABLE->wtx_total_pdu);
+ len += sprintf(page + off + len, " wtx_total_cell = %u\n", WAN_MIB_TABLE->wtx_total_cell);
+ len += sprintf(page + off + len, " wtx_total_byte = %u\n", WAN_MIB_TABLE->wtx_total_byte);
+ len += sprintf(page + off + len, "Driver\n");
+ len += sprintf(page + off + len, " wrx_pdu = %u\n", g_atm_priv_data.wrx_pdu);
+ len += sprintf(page + off + len, " wrx_drop_pdu = %u\n", g_atm_priv_data.wrx_drop_pdu);
+ len += sprintf(page + off + len, " wtx_pdu = %u\n", g_atm_priv_data.wtx_pdu);
+ len += sprintf(page + off + len, " wtx_err_pdu = %u\n", g_atm_priv_data.wtx_err_pdu);
+ len += sprintf(page + off + len, " wtx_drop_pdu = %u\n", g_atm_priv_data.wtx_drop_pdu);
+
+ *eof = 1;
+
+ return len;
+}
+
+static int proc_write_mib(struct file *file, const char *buf, unsigned long count, void *data)
+{
+ char str[2048];
+ char *p;
+ int len, rlen;
+
+ len = count < sizeof(str) ? count : sizeof(str) - 1;
+ rlen = len - copy_from_user(str, buf, len);
+ while ( rlen && str[rlen - 1] <= ' ' )
+ rlen--;
+ str[rlen] = 0;
+ for ( p = str; *p && *p <= ' '; p++, rlen-- );
+ if ( !*p )
+ return 0;
+
+ if ( stricmp(p, "clear") == 0 || stricmp(p, "clear all") == 0
+ || stricmp(p, "clean") == 0 || stricmp(p, "clean all") == 0 ) {
+ memset(WAN_MIB_TABLE, 0, sizeof(*WAN_MIB_TABLE));
+ g_atm_priv_data.wrx_pdu = 0;
+ g_atm_priv_data.wrx_drop_pdu = 0;
+ g_atm_priv_data.wtx_pdu = 0;
+ g_atm_priv_data.wtx_err_pdu = 0;
+ g_atm_priv_data.wtx_drop_pdu = 0;
+ }
+
+ return count;
+}
+
+#if defined(ENABLE_DBG_PROC) && ENABLE_DBG_PROC
+
+static int proc_read_dbg(char *page, char **start, off_t off, int count, int *eof, void *data)
+{
+ int len = 0;
+
+ len += sprintf(page + off + len, "error print - %s\n", (ifx_atm_dbg_enable & DBG_ENABLE_MASK_ERR) ? "enabled" : "disabled");
+ len += sprintf(page + off + len, "debug print - %s\n", (ifx_atm_dbg_enable & DBG_ENABLE_MASK_DEBUG_PRINT) ? "enabled" : "disabled");
+ len += sprintf(page + off + len, "assert - %s\n", (ifx_atm_dbg_enable & DBG_ENABLE_MASK_ASSERT) ? "enabled" : "disabled");
+ len += sprintf(page + off + len, "dump rx skb - %s\n", (ifx_atm_dbg_enable & DBG_ENABLE_MASK_DUMP_SKB_RX) ? "enabled" : "disabled");
+ len += sprintf(page + off + len, "dump tx skb - %s\n", (ifx_atm_dbg_enable & DBG_ENABLE_MASK_DUMP_SKB_TX) ? "enabled" : "disabled");
+ len += sprintf(page + off + len, "qos - %s\n", (ifx_atm_dbg_enable & DBG_ENABLE_MASK_DUMP_QOS) ? "enabled" : "disabled");
+ len += sprintf(page + off + len, "dump init - %s\n", (ifx_atm_dbg_enable & DBG_ENABLE_MASK_DUMP_INIT) ? "enabled" : "disabled");
+
+ *eof = 1;
+
+ return len;
+}
+
+static int proc_write_dbg(struct file *file, const char *buf, unsigned long count, void *data)
+{
+ static const char *dbg_enable_mask_str[] = {
+ " error print",
+ " err",
+ " debug print",
+ " dbg",
+ " assert",
+ " assert",
+ " dump rx skb",
+ " rx",
+ " dump tx skb",
+ " tx",
+ " dump qos",
+ " qos",
+ " dump init",
+ " init",
+ " all"
+ };
+ static const int dbg_enable_mask_str_len[] = {
+ 12, 4,
+ 12, 4,
+ 7, 7,
+ 12, 3,
+ 12, 3,
+ 9, 4,
+ 10, 5,
+ 4
+ };
+ u32 dbg_enable_mask[] = {
+ DBG_ENABLE_MASK_ERR,
+ DBG_ENABLE_MASK_DEBUG_PRINT,
+ DBG_ENABLE_MASK_ASSERT,
+ DBG_ENABLE_MASK_DUMP_SKB_RX,
+ DBG_ENABLE_MASK_DUMP_SKB_TX,
+ DBG_ENABLE_MASK_DUMP_QOS,
+ DBG_ENABLE_MASK_DUMP_INIT,
+ DBG_ENABLE_MASK_ALL
+ };
+
+ char str[2048];
+ char *p;
+
+ int len, rlen;
+
+ int f_enable = 0;
+ int i;
+
+ len = count < sizeof(str) ? count : sizeof(str) - 1;
+ rlen = len - copy_from_user(str, buf, len);
+ while ( rlen && str[rlen - 1] <= ' ' )
+ rlen--;
+ str[rlen] = 0;
+ for ( p = str; *p && *p <= ' '; p++, rlen-- );
+ if ( !*p )
+ return 0;
+
+ if ( strincmp(p, "enable", 6) == 0 ) {
+ p += 6;
+ f_enable = 1;
+ }
+ else if ( strincmp(p, "disable", 7) == 0 ) {
+ p += 7;
+ f_enable = -1;
+ }
+ else if ( strincmp(p, "help", 4) == 0 || *p == '?' ) {
+ printk("echo <enable/disable> [err/dbg/assert/rx/tx/init/all] > /proc/eth/dbg\n");
+ }
+
+ if ( f_enable ) {
+ if ( *p == 0 ) {
+ if ( f_enable > 0 )
+ ifx_atm_dbg_enable |= DBG_ENABLE_MASK_ALL;
+ else
+ ifx_atm_dbg_enable &= ~DBG_ENABLE_MASK_ALL;
+ }
+ else {
+ do {
+ for ( i = 0; i < NUM_ENTITY(dbg_enable_mask_str); i++ )
+ if ( strincmp(p, dbg_enable_mask_str[i], dbg_enable_mask_str_len[i]) == 0 ) {
+ if ( f_enable > 0 )
+ ifx_atm_dbg_enable |= dbg_enable_mask[i >> 1];
+ else
+ ifx_atm_dbg_enable &= ~dbg_enable_mask[i >> 1];
+ p += dbg_enable_mask_str_len[i];
+ break;
+ }
+ } while ( i < NUM_ENTITY(dbg_enable_mask_str) );
+ }
+ }
+
+ return count;
+}
+
+#endif
+
+#if defined(ENABLE_FW_PROC) && ENABLE_FW_PROC
+
+static INLINE int print_htu(char *buf, int i)
+{
+ int len = 0;
+
+ if ( HTU_ENTRY(i)->vld ) {
+ len += sprintf(buf + len, "%2d. valid\n", i);
+ len += sprintf(buf + len, " entry 0x%08x - pid %01x vpi %02x vci %04x pti %01x\n", *(u32*)HTU_ENTRY(i), HTU_ENTRY(i)->pid, HTU_ENTRY(i)->vpi, HTU_ENTRY(i)->vci, HTU_ENTRY(i)->pti);
+ len += sprintf(buf + len, " mask 0x%08x - pid %01x vpi %02x vci %04x pti %01x\n", *(u32*)HTU_MASK(i), HTU_MASK(i)->pid_mask, HTU_MASK(i)->vpi_mask, HTU_MASK(i)->vci_mask, HTU_MASK(i)->pti_mask);
+ len += sprintf(buf + len, " result 0x%08x - type: %s, qid: %d", *(u32*)HTU_RESULT(i), HTU_RESULT(i)->type ? "cell" : "AAL5", HTU_RESULT(i)->qid);
+ if ( HTU_RESULT(i)->type )
+ len += sprintf(buf + len, ", cell id: %d, verification: %s", HTU_RESULT(i)->cellid, HTU_RESULT(i)->ven ? "on" : "off");
+ len += sprintf(buf + len, "\n");
+ }
+ else
+ len += sprintf(buf + len, "%2d. invalid\n", i);
+
+ return len;
+}
+
+static int proc_read_htu(char *page, char **start, off_t off, int count, int *eof, void *data)
+{
+ int len = 0;
+ int len_max = off + count;
+ char *pstr;
+ char str[1024];
+ int llen;
+
+ int htuts = *CFG_WRX_HTUTS;
+ int i;
+
+ pstr = *start = page;
+
+ llen = sprintf(pstr, "HTU Table (Max %d):\n", htuts);
+ pstr += llen;
+ len += llen;
+
+ for ( i = 0; i < htuts; i++ ) {
+ llen = print_htu(str, i);
+ if ( len <= off && len + llen > off ) {
+ memcpy(pstr, str + off - len, len + llen - off);
+ pstr += len + llen - off;
+ }
+ else if ( len > off ) {
+ memcpy(pstr, str, llen);
+ pstr += llen;
+ }
+ len += llen;
+ if ( len >= len_max )
+ goto PROC_READ_HTU_OVERRUN_END;
+ }
+
+ *eof = 1;
+
+ return len - off;
+
+PROC_READ_HTU_OVERRUN_END:
+
+ return len - llen - off;
+}
+
+static INLINE int print_tx_queue(char *buf, int i)
+{
+ int len = 0;
+
+ if ( (*WTX_DMACH_ON & (1 << i)) ) {
+ len += sprintf(buf + len, "%2d. valid\n", i);
+ len += sprintf(buf + len, " queue 0x%08x - sbid %u, qsb %s\n", *(u32*)WTX_QUEUE_CONFIG(i), (unsigned int)WTX_QUEUE_CONFIG(i)->sbid, WTX_QUEUE_CONFIG(i)->qsben ? "enable" : "disable");
+ len += sprintf(buf + len, " dma 0x%08x - base %08x, len %u, vlddes %u\n", *(u32*)WTX_DMA_CHANNEL_CONFIG(i), WTX_DMA_CHANNEL_CONFIG(i)->desba, WTX_DMA_CHANNEL_CONFIG(i)->deslen, WTX_DMA_CHANNEL_CONFIG(i)->vlddes);
+ }
+ else
+ len += sprintf(buf + len, "%2d. invalid\n", i);
+
+ return len;
+}
+
+static int proc_read_txq(char *page, char **start, off_t off, int count, int *eof, void *data)
+{
+ int len = 0;
+ int len_max = off + count;
+ char *pstr;
+ char str[1024];
+ int llen;
+
+ int i;
+
+ pstr = *start = page;
+
+ llen = sprintf(pstr, "TX Queue Config (Max %d):\n", *CFG_WTX_DCHNUM);
+ pstr += llen;
+ len += llen;
+
+ for ( i = 0; i < 16; i++ ) {
+ llen = print_tx_queue(str, i);
+ if ( len <= off && len + llen > off ) {
+ memcpy(pstr, str + off - len, len + llen - off);
+ pstr += len + llen - off;
+ }
+ else if ( len > off ) {
+ memcpy(pstr, str, llen);
+ pstr += llen;
+ }
+ len += llen;
+ if ( len >= len_max )
+ goto PROC_READ_HTU_OVERRUN_END;
+ }
+
+ *eof = 1;
+
+ return len - off;
+
+PROC_READ_HTU_OVERRUN_END:
+
+ return len - llen - off;
+}
+
+#endif
+
+static int stricmp(const char *p1, const char *p2)
+{
+ int c1, c2;
+
+ while ( *p1 && *p2 )
+ {
+ c1 = *p1 >= 'A' && *p1 <= 'Z' ? *p1 + 'a' - 'A' : *p1;
+ c2 = *p2 >= 'A' && *p2 <= 'Z' ? *p2 + 'a' - 'A' : *p2;
+ if ( (c1 -= c2) )
+ return c1;
+ p1++;
+ p2++;
+ }
+
+ return *p1 - *p2;
+}
+
+#if defined(ENABLE_DBG_PROC) && ENABLE_DBG_PROC
+static int strincmp(const char *p1, const char *p2, int n)
+{
+ int c1 = 0, c2;
+
+ while ( n && *p1 && *p2 )
+ {
+ c1 = *p1 >= 'A' && *p1 <= 'Z' ? *p1 + 'a' - 'A' : *p1;
+ c2 = *p2 >= 'A' && *p2 <= 'Z' ? *p2 + 'a' - 'A' : *p2;
+ if ( (c1 -= c2) )
+ return c1;
+ p1++;
+ p2++;
+ n--;
+ }
+
+ return n ? *p1 - *p2 : c1;
+}
+#endif
+
+static INLINE int ifx_atm_version(char *buf)
+{
+ int len = 0;
+ unsigned int major, minor;
+
+ ifx_atm_get_fw_ver(&major, &minor);
+
+ len += sprintf(buf + len, "Infineon Technologies ATM driver version %d.%d.%d\n", IFX_ATM_VER_MAJOR, IFX_ATM_VER_MID, IFX_ATM_VER_MINOR);
+ len += sprintf(buf + len, "Infineon Technologies ATM (A1) firmware version %d.%d\n", major, minor);
+
+ return len;
+}
+
+#ifdef MODULE
+static INLINE void reset_ppe(void)
+{
+ // TODO:
+}
+#endif
+
+static INLINE void check_parameters(void)
+{
+ /* Please refer to Amazon spec 15.4 for setting these values. */
+ if ( qsb_tau < 1 )
+ qsb_tau = 1;
+ if ( qsb_tstep < 1 )
+ qsb_tstep = 1;
+ else if ( qsb_tstep > 4 )
+ qsb_tstep = 4;
+ else if ( qsb_tstep == 3 )
+ qsb_tstep = 2;
+
+ /* There is a delay between PPE write descriptor and descriptor is */
+ /* really stored in memory. Host also has this delay when writing */
+ /* descriptor. So PPE will use this value to determine if the write */
+ /* operation makes effect. */
+ if ( write_descriptor_delay < 0 )
+ write_descriptor_delay = 0;
+
+ if ( aal5_fill_pattern < 0 )
+ aal5_fill_pattern = 0;
+ else
+ aal5_fill_pattern &= 0xFF;
+
+ /* Because of the limitation of length field in descriptors, the packet */
+ /* size could not be larger than 64K minus overhead size. */
+ if ( aal5r_max_packet_size < 0 )
+ aal5r_max_packet_size = 0;
+ else if ( aal5r_max_packet_size >= 65535 - MAX_RX_FRAME_EXTRA_BYTES )
+ aal5r_max_packet_size = 65535 - MAX_RX_FRAME_EXTRA_BYTES;
+ if ( aal5r_min_packet_size < 0 )
+ aal5r_min_packet_size = 0;
+ else if ( aal5r_min_packet_size > aal5r_max_packet_size )
+ aal5r_min_packet_size = aal5r_max_packet_size;
+ if ( aal5s_max_packet_size < 0 )
+ aal5s_max_packet_size = 0;
+ else if ( aal5s_max_packet_size >= 65535 - MAX_TX_FRAME_EXTRA_BYTES )
+ aal5s_max_packet_size = 65535 - MAX_TX_FRAME_EXTRA_BYTES;
+ if ( aal5s_min_packet_size < 0 )
+ aal5s_min_packet_size = 0;
+ else if ( aal5s_min_packet_size > aal5s_max_packet_size )
+ aal5s_min_packet_size = aal5s_max_packet_size;
+
+ if ( dma_rx_descriptor_length < 2 )
+ dma_rx_descriptor_length = 2;
+ if ( dma_tx_descriptor_length < 2 )
+ dma_tx_descriptor_length = 2;
+ if ( dma_rx_clp1_descriptor_threshold < 0 )
+ dma_rx_clp1_descriptor_threshold = 0;
+ else if ( dma_rx_clp1_descriptor_threshold > dma_rx_descriptor_length )
+ dma_rx_clp1_descriptor_threshold = dma_rx_descriptor_length;
+
+ if ( dma_tx_descriptor_length < 2 )
+ dma_tx_descriptor_length = 2;
+}
+
+static INLINE int init_priv_data(void)
+{
+ void *p;
+ int i;
+ struct rx_descriptor rx_desc = {0};
+ struct sk_buff *skb;
+ volatile struct tx_descriptor *p_tx_desc;
+ struct sk_buff **ppskb;
+
+ // clear atm private data structure
+ memset(&g_atm_priv_data, 0, sizeof(g_atm_priv_data));
+
+ // allocate memory for RX (AAL) descriptors
+ p = kzalloc(dma_rx_descriptor_length * sizeof(struct rx_descriptor) + DESC_ALIGNMENT, GFP_KERNEL);
+ if ( p == NULL )
+ return IFX_ERROR;
+ dma_cache_wback_inv((unsigned long)p, dma_rx_descriptor_length * sizeof(struct rx_descriptor) + DESC_ALIGNMENT);
+ g_atm_priv_data.aal_desc_base = p;
+ p = (void *)((((unsigned int)p + DESC_ALIGNMENT - 1) & ~(DESC_ALIGNMENT - 1)) | KSEG1);
+ g_atm_priv_data.aal_desc = (volatile struct rx_descriptor *)p;
+
+ // allocate memory for RX (OAM) descriptors
+ p = kzalloc(RX_DMA_CH_OAM_DESC_LEN * sizeof(struct rx_descriptor) + DESC_ALIGNMENT, GFP_KERNEL);
+ if ( p == NULL )
+ return IFX_ERROR;
+ dma_cache_wback_inv((unsigned long)p, RX_DMA_CH_OAM_DESC_LEN * sizeof(struct rx_descriptor) + DESC_ALIGNMENT);
+ g_atm_priv_data.oam_desc_base = p;
+ p = (void *)((((unsigned int)p + DESC_ALIGNMENT - 1) & ~(DESC_ALIGNMENT - 1)) | KSEG1);
+ g_atm_priv_data.oam_desc = (volatile struct rx_descriptor *)p;
+
+ // allocate memory for RX (OAM) buffer
+ p = kzalloc(RX_DMA_CH_OAM_DESC_LEN * RX_DMA_CH_OAM_BUF_SIZE + DATA_BUFFER_ALIGNMENT, GFP_KERNEL);
+ if ( p == NULL )
+ return IFX_ERROR;
+ dma_cache_wback_inv((unsigned long)p, RX_DMA_CH_OAM_DESC_LEN * RX_DMA_CH_OAM_BUF_SIZE + DATA_BUFFER_ALIGNMENT);
+ g_atm_priv_data.oam_buf_base = p;
+ p = (void *)(((unsigned int)p + DATA_BUFFER_ALIGNMENT - 1) & ~(DATA_BUFFER_ALIGNMENT - 1));
+ g_atm_priv_data.oam_buf = p;
+
+ // allocate memory for TX descriptors
+ p = kzalloc(MAX_PVC_NUMBER * dma_tx_descriptor_length * sizeof(struct tx_descriptor) + DESC_ALIGNMENT, GFP_KERNEL);
+ if ( p == NULL )
+ return IFX_ERROR;
+ dma_cache_wback_inv((unsigned long)p, MAX_PVC_NUMBER * dma_tx_descriptor_length * sizeof(struct tx_descriptor) + DESC_ALIGNMENT);
+ g_atm_priv_data.tx_desc_base = p;
+
+ // allocate memory for TX skb pointers
+ p = kzalloc(MAX_PVC_NUMBER * dma_tx_descriptor_length * sizeof(struct sk_buff *) + 4, GFP_KERNEL);
+ if ( p == NULL )
+ return IFX_ERROR;
+ dma_cache_wback_inv((unsigned long)p, MAX_PVC_NUMBER * dma_tx_descriptor_length * sizeof(struct sk_buff *) + 4);
+ g_atm_priv_data.tx_skb_base = p;
+
+ // setup RX (AAL) descriptors
+ rx_desc.own = 1;
+ rx_desc.c = 0;
+ rx_desc.sop = 1;
+ rx_desc.eop = 1;
+ rx_desc.byteoff = 0;
+ rx_desc.id = 0;
+ rx_desc.err = 0;
+ rx_desc.datalen = RX_DMA_CH_AAL_BUF_SIZE;
+ for ( i = 0; i < dma_rx_descriptor_length; i++ ) {
+ skb = alloc_skb_rx();
+ if ( skb == NULL )
+ return IFX_ERROR;
+ rx_desc.dataptr = ((unsigned int)skb->data >> 2) & 0x0FFFFFFF;
+ g_atm_priv_data.aal_desc[i] = rx_desc;
+ }
+
+ // setup RX (OAM) descriptors
+ p = (void *)((unsigned int)g_atm_priv_data.oam_buf | KSEG1);
+ rx_desc.own = 1;
+ rx_desc.c = 0;
+ rx_desc.sop = 1;
+ rx_desc.eop = 1;
+ rx_desc.byteoff = 0;
+ rx_desc.id = 0;
+ rx_desc.err = 0;
+ rx_desc.datalen = RX_DMA_CH_OAM_BUF_SIZE;
+ for ( i = 0; i < RX_DMA_CH_OAM_DESC_LEN; i++ ) {
+ rx_desc.dataptr = ((unsigned int)p >> 2) & 0x0FFFFFFF;
+ g_atm_priv_data.oam_desc[i] = rx_desc;
+ p = (void *)((unsigned int)p + RX_DMA_CH_OAM_BUF_SIZE);
+ }
+
+ // setup TX descriptors and skb pointers
+ p_tx_desc = (volatile struct tx_descriptor *)((((unsigned int)g_atm_priv_data.tx_desc_base + DESC_ALIGNMENT - 1) & ~(DESC_ALIGNMENT - 1)) | KSEG1);
+ ppskb = (struct sk_buff **)(((unsigned int)g_atm_priv_data.tx_skb_base + 3) & ~3);
+ for ( i = 0; i < MAX_PVC_NUMBER; i++ ) {
+ g_atm_priv_data.conn[i].tx_desc = &p_tx_desc[i * dma_tx_descriptor_length];
+ g_atm_priv_data.conn[i].tx_skb = &ppskb[i * dma_tx_descriptor_length];
+ }
+
+ for ( i = 0; i < ATM_PORT_NUMBER; i++ )
+ g_atm_priv_data.port[i].tx_max_cell_rate = DEFAULT_TX_LINK_RATE;
+
+ return IFX_SUCCESS;
+}
+
+static INLINE void clear_priv_data(void)
+{
+ int i, j;
+ struct sk_buff *skb;
+
+ for ( i = 0; i < MAX_PVC_NUMBER; i++ ) {
+ if ( g_atm_priv_data.conn[i].tx_skb != NULL ) {
+ for ( j = 0; j < dma_tx_descriptor_length; j++ )
+ if ( g_atm_priv_data.conn[i].tx_skb[j] != NULL )
+ dev_kfree_skb_any(g_atm_priv_data.conn[i].tx_skb[j]);
+ }
+ }
+
+ if ( g_atm_priv_data.tx_skb_base != NULL )
+ kfree(g_atm_priv_data.tx_skb_base);
+
+ if ( g_atm_priv_data.tx_desc_base != NULL )
+ kfree(g_atm_priv_data.tx_desc_base);
+
+ if ( g_atm_priv_data.oam_buf_base != NULL )
+ kfree(g_atm_priv_data.oam_buf_base);
+
+ if ( g_atm_priv_data.oam_desc_base != NULL )
+ kfree(g_atm_priv_data.oam_desc_base);
+
+ if ( g_atm_priv_data.aal_desc_base != NULL ) {
+ for ( i = 0; i < dma_rx_descriptor_length; i++ ) {
+ if ( g_atm_priv_data.aal_desc[i].sop || g_atm_priv_data.aal_desc[i].eop ) { // descriptor initialized
+ skb = get_skb_rx_pointer(g_atm_priv_data.aal_desc[i].dataptr);
+ dev_kfree_skb_any(skb);
+ }
+ }
+ kfree(g_atm_priv_data.aal_desc_base);
+ }
+}
+
+static INLINE void init_rx_tables(void)
+{
+ int i;
+ struct wrx_queue_config wrx_queue_config = {0};
+ struct wrx_dma_channel_config wrx_dma_channel_config = {0};
+ struct htu_entry htu_entry = {0};
+ struct htu_result htu_result = {0};
+ struct htu_mask htu_mask = { set: 0x01,
+ clp: 0x01,
+ pid_mask: 0x00,
+ vpi_mask: 0x00,
+ vci_mask: 0x00,
+ pti_mask: 0x00,
+ clear: 0x00};
+
+ /*
+ * General Registers
+ */
+ *CFG_WRX_HTUTS = MAX_PVC_NUMBER + OAM_HTU_ENTRY_NUMBER;
+ *CFG_WRX_QNUM = MAX_QUEUE_NUMBER;
+ *CFG_WRX_DCHNUM = RX_DMA_CH_TOTAL;
+ *WRX_DMACH_ON = (1 << RX_DMA_CH_TOTAL) - 1;
+ *WRX_HUNT_BITTH = DEFAULT_RX_HUNT_BITTH;
+
+ /*
+ * WRX Queue Configuration Table
+ */
+ wrx_queue_config.uumask = 0;
+ wrx_queue_config.cpimask = 0;
+ wrx_queue_config.uuexp = 0;
+ wrx_queue_config.cpiexp = 0;
+ wrx_queue_config.mfs = aal5r_max_packet_size;
+ wrx_queue_config.oversize = aal5r_max_packet_size;
+ wrx_queue_config.undersize = aal5r_min_packet_size;
+ wrx_queue_config.errdp = aal5r_drop_error_packet;
+ wrx_queue_config.dmach = RX_DMA_CH_AAL;
+ for ( i = 0; i < MAX_QUEUE_NUMBER; i++ )
+ *WRX_QUEUE_CONFIG(i) = wrx_queue_config;
+ WRX_QUEUE_CONFIG(OAM_RX_QUEUE)->dmach = RX_DMA_CH_OAM;
+
+ /*
+ * WRX DMA Channel Configuration Table
+ */
+ wrx_dma_channel_config.chrl = 0;
+ wrx_dma_channel_config.clp1th = dma_rx_clp1_descriptor_threshold;
+ wrx_dma_channel_config.mode = 0;
+ wrx_dma_channel_config.rlcfg = 0;
+
+ wrx_dma_channel_config.deslen = RX_DMA_CH_OAM_DESC_LEN;
+ wrx_dma_channel_config.desba = ((unsigned int)g_atm_priv_data.oam_desc >> 2) & 0x0FFFFFFF;
+ *WRX_DMA_CHANNEL_CONFIG(RX_DMA_CH_OAM) = wrx_dma_channel_config;
+
+ wrx_dma_channel_config.deslen = dma_rx_descriptor_length;
+ wrx_dma_channel_config.desba = ((unsigned int)g_atm_priv_data.aal_desc >> 2) & 0x0FFFFFFF;
+ *WRX_DMA_CHANNEL_CONFIG(RX_DMA_CH_AAL) = wrx_dma_channel_config;
+
+ /*
+ * HTU Tables
+ */
+ for ( i = 0; i < MAX_PVC_NUMBER; i++ )
+ {
+ htu_result.qid = (unsigned int)i;
+
+ *HTU_ENTRY(i + OAM_HTU_ENTRY_NUMBER) = htu_entry;
+ *HTU_MASK(i + OAM_HTU_ENTRY_NUMBER) = htu_mask;
+ *HTU_RESULT(i + OAM_HTU_ENTRY_NUMBER) = htu_result;
+ }
+ /* OAM HTU Entry */
+ htu_entry.vci = 0x03;
+ htu_mask.pid_mask = 0x03;
+ htu_mask.vpi_mask = 0xFF;
+ htu_mask.vci_mask = 0x0000;
+ htu_mask.pti_mask = 0x07;
+ htu_result.cellid = OAM_RX_QUEUE;
+ htu_result.type = 1;
+ htu_result.ven = 1;
+ htu_result.qid = OAM_RX_QUEUE;
+ *HTU_RESULT(OAM_F4_SEG_HTU_ENTRY) = htu_result;
+ *HTU_MASK(OAM_F4_SEG_HTU_ENTRY) = htu_mask;
+ *HTU_ENTRY(OAM_F4_SEG_HTU_ENTRY) = htu_entry;
+ htu_entry.vci = 0x04;
+ htu_result.cellid = OAM_RX_QUEUE;
+ htu_result.type = 1;
+ htu_result.ven = 1;
+ htu_result.qid = OAM_RX_QUEUE;
+ *HTU_RESULT(OAM_F4_TOT_HTU_ENTRY) = htu_result;
+ *HTU_MASK(OAM_F4_TOT_HTU_ENTRY) = htu_mask;
+ *HTU_ENTRY(OAM_F4_TOT_HTU_ENTRY) = htu_entry;
+ htu_entry.vci = 0x00;
+ htu_entry.pti = 0x04;
+ htu_mask.vci_mask = 0xFFFF;
+ htu_mask.pti_mask = 0x01;
+ htu_result.cellid = OAM_RX_QUEUE;
+ htu_result.type = 1;
+ htu_result.ven = 1;
+ htu_result.qid = OAM_RX_QUEUE;
+ *HTU_RESULT(OAM_F5_HTU_ENTRY) = htu_result;
+ *HTU_MASK(OAM_F5_HTU_ENTRY) = htu_mask;
+ *HTU_ENTRY(OAM_F5_HTU_ENTRY) = htu_entry;
+#if defined(ENABLE_ATM_RETX) && ENABLE_ATM_RETX
+ htu_entry.pid = 0x0;
+ htu_entry.vpi = 0x01;
+ htu_entry.vci = 0x0001;
+ htu_entry.pti = 0x00;
+ htu_mask.pid_mask = 0x0;
+ htu_mask.vpi_mask = 0x00;
+ htu_mask.vci_mask = 0x0000;
+ htu_mask.pti_mask = 0x3;
+ htu_result.cellid = OAM_RX_QUEUE;
+ htu_result.type = 1;
+ htu_result.ven = 1;
+ htu_result.qid = OAM_RX_QUEUE;
+ *HTU_RESULT(OAM_ARQ_HTU_ENTRY) = htu_result;
+ *HTU_MASK(OAM_ARQ_HTU_ENTRY) = htu_mask;
+ *HTU_ENTRY(OAM_ARQ_HTU_ENTRY) = htu_entry;
+#endif
+}
+
+static INLINE void init_tx_tables(void)
+{
+ int i;
+ struct wtx_queue_config wtx_queue_config = {0};
+ struct wtx_dma_channel_config wtx_dma_channel_config = {0};
+ struct wtx_port_config wtx_port_config = { res1: 0,
+ qid: 0,
+ qsben: 1};
+
+ /*
+ * General Registers
+ */
+ *CFG_WTX_DCHNUM = MAX_TX_DMA_CHANNEL_NUMBER;
+ *WTX_DMACH_ON = ((1 << MAX_TX_DMA_CHANNEL_NUMBER) - 1) ^ ((1 << FIRST_QSB_QID) - 1);
+ *CFG_WRDES_DELAY = write_descriptor_delay;
+
+ /*
+ * WTX Port Configuration Table
+ */
+ for ( i = 0; i < ATM_PORT_NUMBER; i++ )
+ *WTX_PORT_CONFIG(i) = wtx_port_config;
+
+ /*
+ * WTX Queue Configuration Table
+ */
+ wtx_queue_config.type = 0x0;
+ wtx_queue_config.qsben = 1;
+ wtx_queue_config.sbid = 0;
+ for ( i = 0; i < MAX_TX_DMA_CHANNEL_NUMBER; i++ )
+ *WTX_QUEUE_CONFIG(i) = wtx_queue_config;
+
+ /*
+ * WTX DMA Channel Configuration Table
+ */
+ wtx_dma_channel_config.mode = 0;
+ wtx_dma_channel_config.deslen = 0;
+ wtx_dma_channel_config.desba = 0;
+ for ( i = 0; i < FIRST_QSB_QID; i++ )
+ *WTX_DMA_CHANNEL_CONFIG(i) = wtx_dma_channel_config;
+ /* normal connection */
+ wtx_dma_channel_config.deslen = dma_tx_descriptor_length;
+ for ( ; i < MAX_TX_DMA_CHANNEL_NUMBER ; i++ ) {
+ wtx_dma_channel_config.desba = ((unsigned int)g_atm_priv_data.conn[i - FIRST_QSB_QID].tx_desc >> 2) & 0x0FFFFFFF;
+ *WTX_DMA_CHANNEL_CONFIG(i) = wtx_dma_channel_config;
+ }
+}
+
+
+
+/*
+ * ####################################
+ * Global Function
+ * ####################################
+ */
+
+static int atm_showtime_enter(struct port_cell_info *port_cell, void *xdata_addr)
+{
+ int i, j;
+
+ ASSERT(port_cell != NULL, "port_cell is NULL");
+ ASSERT(xdata_addr != NULL, "xdata_addr is NULL");
+
+ for ( j = 0; j < ATM_PORT_NUMBER && j < port_cell->port_num; j++ )
+ if ( port_cell->tx_link_rate[j] > 0 )
+ break;
+ for ( i = 0; i < ATM_PORT_NUMBER && i < port_cell->port_num; i++ )
+ g_atm_priv_data.port[i].tx_max_cell_rate = port_cell->tx_link_rate[i] > 0 ? port_cell->tx_link_rate[i] : port_cell->tx_link_rate[j];
+
+ qsb_global_set();
+
+ for ( i = 0; i < MAX_PVC_NUMBER; i++ )
+ if ( g_atm_priv_data.conn[i].vcc != NULL )
+ set_qsb(g_atm_priv_data.conn[i].vcc, &g_atm_priv_data.conn[i].vcc->qos, i);
+
+ // TODO: ReTX set xdata_addr
+ g_xdata_addr = xdata_addr;
+
+ g_showtime = 1;
+
+#if defined(CONFIG_VR9)
+ IFX_REG_W32(0x0F, UTP_CFG);
+#endif
+
+ pr_debug("enter showtime, cell rate: 0 - %d, 1 - %d, xdata addr: 0x%08x\n", g_atm_priv_data.port[0].tx_max_cell_rate, g_atm_priv_data.port[1].tx_max_cell_rate, (unsigned int)g_xdata_addr);
+
+ return IFX_SUCCESS;
+}
+
+static int atm_showtime_exit(void)
+{
+#if defined(CONFIG_VR9)
+ IFX_REG_W32(0x00, UTP_CFG);
+#endif
+
+ g_showtime = 0;
+
+ // TODO: ReTX clean state
+ g_xdata_addr = NULL;
+
+ pr_debug("leave showtime\n");
+
+ return IFX_SUCCESS;
+}
+
+
+
+/*
+ * ####################################
+ * Init/Cleanup API
+ * ####################################
+ */
+
+/*
+ * Description:
+ * Initialize global variables, PP32, comunication structures, register IRQ
+ * and register device.
+ * Input:
+ * none
+ * Output:
+ * 0 --- successful
+ * else --- failure, usually it is negative value of error code
+ */
+static int __devinit ifx_atm_init(void)
+{
+ int ret;
+ int port_num;
+ struct port_cell_info port_cell = {0};
+ int i, j;
+ char ver_str[256];
+
+#ifdef MODULE
+ reset_ppe();
+#endif
+
+ check_parameters();
+
+ ret = init_priv_data();
+ if ( ret != IFX_SUCCESS ) {
+ err("INIT_PRIV_DATA_FAIL");
+ goto INIT_PRIV_DATA_FAIL;
+ }
+
+ ifx_atm_init_chip();
+ init_rx_tables();
+ init_tx_tables();
+
+ /* create devices */
+ for ( port_num = 0; port_num < ATM_PORT_NUMBER; port_num++ ) {
+ g_atm_priv_data.port[port_num].dev = atm_dev_register("ifxmips_atm", &g_ifx_atm_ops, -1, NULL);
+ if ( !g_atm_priv_data.port[port_num].dev ) {
+ err("failed to register atm device %d!", port_num);
+ ret = -EIO;
+ goto ATM_DEV_REGISTER_FAIL;
+ }
+ else {
+ g_atm_priv_data.port[port_num].dev->ci_range.vpi_bits = 8;
+ g_atm_priv_data.port[port_num].dev->ci_range.vci_bits = 16;
+ g_atm_priv_data.port[port_num].dev->link_rate = g_atm_priv_data.port[port_num].tx_max_cell_rate;
+ g_atm_priv_data.port[port_num].dev->dev_data = (void*)port_num;
+ }
+ }
+
+ /* register interrupt handler */
+ ret = request_irq(PPE_MAILBOX_IGU1_INT, mailbox_irq_handler, IRQF_DISABLED, "atm_mailbox_isr", &g_atm_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;
+ }
+
+ port_cell.port_num = ATM_PORT_NUMBER;
+ ifx_mei_atm_showtime_check(&g_showtime, &port_cell, &g_xdata_addr);
+ if ( g_showtime ) {
+ for ( i = 0; i < ATM_PORT_NUMBER; i++ )
+ if ( port_cell.tx_link_rate[i] != 0 )
+ break;
+ for ( j = 0; j < ATM_PORT_NUMBER; j++ )
+ g_atm_priv_data.port[j].tx_max_cell_rate = port_cell.tx_link_rate[j] != 0 ? port_cell.tx_link_rate[j] : port_cell.tx_link_rate[i];
+ }
+
+ qsb_global_set();
+ validate_oam_htu_entry();
+
+ /* create proc file */
+ proc_file_create();
+
+ ifx_mei_atm_showtime_enter = atm_showtime_enter;
+ ifx_mei_atm_showtime_exit = atm_showtime_exit;
+
+ ifx_atm_version(ver_str);
+ printk(KERN_INFO "%s", ver_str);
+
+ printk("ifxmips_atm: ATM init succeed\n");
+
+ return IFX_SUCCESS;
+
+PP32_START_FAIL:
+ free_irq(PPE_MAILBOX_IGU1_INT, &g_atm_priv_data);
+REQUEST_IRQ_PPE_MAILBOX_IGU1_INT_FAIL:
+ATM_DEV_REGISTER_FAIL:
+ while ( port_num-- > 0 )
+ atm_dev_deregister(g_atm_priv_data.port[port_num].dev);
+INIT_PRIV_DATA_FAIL:
+ clear_priv_data();
+ printk("ifxmips_atm: ATM init failed\n");
+ return ret;
+}
+
+/*
+ * Description:
+ * Release memory, free IRQ, and deregister device.
+ * Input:
+ * none
+ * Output:
+ * none
+ */
+static void __exit ifx_atm_exit(void)
+{
+ int port_num;
+
+ ifx_mei_atm_showtime_enter = NULL;
+ ifx_mei_atm_showtime_exit = NULL;
+
+ proc_file_delete();
+
+ invalidate_oam_htu_entry();
+
+ ifx_pp32_stop(0);
+
+ free_irq(PPE_MAILBOX_IGU1_INT, &g_atm_priv_data);
+
+ for ( port_num = 0; port_num < ATM_PORT_NUMBER; port_num++ )
+ atm_dev_deregister(g_atm_priv_data.port[port_num].dev);
+
+ ifx_atm_uninit_chip();
+
+ clear_priv_data();
+}
+
+module_init(ifx_atm_init);
+module_exit(ifx_atm_exit);
+MODULE_LICENSE("Dual BSD/GPL");
projects / openwrt.git / blobdiff