diff options
Diffstat (limited to 'package/platform/lantiq/ltq-atm/src/ltq_atm.c')
| -rw-r--r-- | package/platform/lantiq/ltq-atm/src/ltq_atm.c | 1913 |
1 files changed, 0 insertions, 1913 deletions
diff --git a/package/platform/lantiq/ltq-atm/src/ltq_atm.c b/package/platform/lantiq/ltq-atm/src/ltq_atm.c deleted file mode 100644 index 8466510c6b..0000000000 --- a/package/platform/lantiq/ltq-atm/src/ltq_atm.c +++ /dev/null @@ -1,1913 +0,0 @@ -/****************************************************************************** -** -** 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 -*******************************************************************************/ - -#define IFX_ATM_VER_MAJOR 1 -#define IFX_ATM_VER_MID 0 -#define IFX_ATM_VER_MINOR 26 - -#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/platform_device.h> -#include <linux/of_device.h> -#include <linux/atm.h> -#include <linux/clk.h> -#include <linux/interrupt.h> -#ifdef CONFIG_XFRM - #include <net/xfrm.h> -#endif - -#include <lantiq_soc.h> - -#include "ifxmips_atm_core.h" - -#define MODULE_PARM_ARRAY(a, b) module_param_array(a, int, NULL, 0) -#define MODULE_PARM(a, b) module_param(a, int, 0) - -/*! - \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 - * #################################### - */ - -#ifdef CONFIG_AMAZON_SE - #define ENABLE_LESS_CACHE_INV 1 - #define LESS_CACHE_INV_LEN 96 -#endif - -#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 void 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); -static struct sk_buff* skb_duplicate(struct sk_buff *); -static struct sk_buff* skb_break_away_from_protocol(struct sk_buff *); - -/* - * mailbox handler and signal function - */ -static inline void mailbox_oam_rx_handler(void); -static inline void mailbox_aal_rx_handler(void); -static irqreturn_t mailbox_irq_handler(int, void *); -static inline void mailbox_signal(unsigned int, int); -static void do_ppe_tasklet(unsigned long); -DECLARE_TASKLET(g_dma_tasklet, do_ppe_tasklet, 0); - -/* - * 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 *); - -static inline int ifx_atm_version(const struct ltq_atm_ops *ops, char *); - -/* - * Init & clean-up functions - */ -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_showtime_check(int *is_showtime, struct port_cell_info *port_cell, void **xdata_addr); -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_led_blink(void); -#else -static inline int ifx_mei_atm_led_blink(void) { return 0; } -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 0; -} -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 - -static struct sk_buff* (*ifx_atm_alloc_tx)(struct atm_vcc *, unsigned int) = NULL; - -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, -}; - -static int g_showtime = 0; -static void *g_xdata_addr = NULL; - -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 ( vcc->qos.aal != ATM_AAL5 && vcc->qos.aal != ATM_AAL0 ) - return -EPROTONOSUPPORT; - -#if !defined(DISABLE_QOS_WORKAROUND) || !DISABLE_QOS_WORKAROUND - /* 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; - } -#endif - - /* 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 + FIRST_QSB_QID)->sbid = (int)vcc->dev->dev_data; - - /* set htu entry */ - set_htu_entry(vpi, vci, conn, vcc->qos.aal == ATM_AAL5 ? 1 : 0, 0); - - 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 ) { - pr_err("can't find vcc\n"); - 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 */ - connection->vcc = NULL; - connection->aal5_vcc_crc_err = 0; - connection->aal5_vcc_oversize_sdu = 0; - clear_bit(conn, &g_atm_priv_data.conn_table); - - /* 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; - } - - /* wait for incoming packets to be processed by upper layers */ - tasklet_unlock_wait(&g_dma_tasklet); - -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}; - struct sk_buff *new_skb; - - 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 ) { - pr_debug("not in showtime\n"); - ret = -EIO; - goto PPE_SEND_FAIL; - } - - if ( vcc->qos.aal == ATM_AAL5 ) { - int byteoff; - int datalen; - struct tx_inband_header *header; - - byteoff = (unsigned int)skb->data & (DATA_BUFFER_ALIGNMENT - 1); - if ( skb_headroom(skb) < byteoff + TX_INBAND_HEADER_LENGTH ) - new_skb = skb_duplicate(skb); - else - new_skb = skb_break_away_from_protocol(skb); - if ( new_skb == NULL ) { - pr_err("either skb_duplicate or skb_break_away_from_protocol fail\n"); - ret = -ENOMEM; - goto PPE_SEND_FAIL; - } - dev_kfree_skb_any(skb); - skb = new_skb; - - datalen = skb->len; - 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 ) { - pr_err("skb->data not aligned\n"); - new_skb = skb_duplicate(skb); - } else - new_skb = skb_break_away_from_protocol(skb); - if ( new_skb == NULL ) { - pr_err("either skb_duplicate or skb_break_away_from_protocol fail\n"); - ret = -ENOMEM; - goto PPE_SEND_FAIL; - } - 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 ) { - pr_debug("ALLOC_TX_CONNECTION_FAIL\n"); - 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); - - mailbox_signal(conn, 1); - - adsl_led_flash(); - - return 0; - -FIND_VCC_FAIL: - pr_err("FIND_VCC_FAIL\n"); - 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; -} - -/* operation and maintainance */ -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) ) - { - g_atm_priv_data.wtx_err_oam++; - return -EINVAL; - } - - if ( !g_showtime ) { - pr_err("not in showtime\n"); - g_atm_priv_data.wtx_drop_oam++; - return -EIO; - } - - conn = find_vcc(vcc); - if ( conn < 0 ) { - pr_err("FIND_VCC_FAIL\n"); - g_atm_priv_data.wtx_drop_oam++; - return -EINVAL; - } - - skb = alloc_skb_tx(CELL_SIZE); - if ( skb == NULL ) { - pr_err("ALLOC_SKB_TX_FAIL\n"); - g_atm_priv_data.wtx_drop_oam++; - return -ENOMEM; - } - skb_put(skb, CELL_SIZE); - 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); - pr_err("ALLOC_TX_CONNECTION_FAIL\n"); - g_atm_priv_data.wtx_drop_oam++; - 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); - - mailbox_signal(conn, 1); - - g_atm_priv_data.wtx_oam++; - 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 void adsl_led_flash(void) -{ - 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 */ -#if defined(ENABLE_LESS_CACHE_INV) && ENABLE_LESS_CACHE_INV - dma_cache_inv((unsigned long)skb->data, LESS_CACHE_INV_LEN); -#else - dma_cache_inv((unsigned long)skb->data, RX_DMA_CH_AAL_BUF_SIZE); -#endif - } - 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 ) { - pr_err("atm_alloc_tx: oversize packet\n"); - return NULL; - } - /* send buffer overflow */ - if ( sk_wmem_alloc_get(sk_atm(vcc)) && !atm_may_send(vcc, size) ) { - pr_err("atm_alloc_tx: send buffer overflow\n"); - return NULL; - } - conn = find_vcc(vcc); - if ( conn < 0 ) { - pr_err("atm_alloc_tx: unknown VCC\n"); - return NULL; - } - - skb = dev_alloc_skb(size); - if ( skb == NULL ) { - pr_err("atm_alloc_tx: sk buffer is used up\n"); - 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 struct sk_buff* skb_duplicate(struct sk_buff *skb) -{ - struct sk_buff *new_skb; - - new_skb = alloc_skb_tx(skb->len); - if ( new_skb == NULL ) - return NULL; - - skb_put(new_skb, skb->len); - memcpy(new_skb->data, skb->data, skb->len); - - return new_skb; -} - -static struct sk_buff* skb_break_away_from_protocol(struct sk_buff *skb) -{ - struct sk_buff *new_skb; - - if ( skb_shared(skb) ) { - new_skb = skb_clone(skb, GFP_ATOMIC); - if ( new_skb == NULL ) - return NULL; - } else - new_skb = skb_get(skb); - - skb_dst_drop(new_skb); -#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) - nf_conntrack_put(new_skb->nfct); - new_skb->nfct = NULL; - nf_conntrack_put_reasm(new_skb->nfct_reasm); - new_skb->nfct_reasm = NULL; - #ifdef CONFIG_BRIDGE_NETFILTER - nf_bridge_put(new_skb->nf_bridge); - new_skb->nf_bridge = NULL; - #endif -#endif - - return new_skb; -} - -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++ ) { - unsigned int loop_count = 0; - - do { - reg_desc = g_atm_priv_data.oam_desc[g_atm_priv_data.oam_desc_pos]; - if ( ++loop_count == 1000 ) - break; - } while ( reg_desc.own || !reg_desc.c ); // keep test OWN and C bit until data is ready - ASSERT(loop_count == 1, "loop_count = %u, own = %d, c = %d, oam_desc_pos = %u", loop_count, (int)reg_desc.own, (int)reg_desc.c, g_atm_priv_data.oam_desc_pos); - - 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); - - g_atm_priv_data.wrx_oam++; - - adsl_led_flash(); - } else - g_atm_priv_data.wrx_drop_oam++; - - 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; - - dma_cache_inv((unsigned long)header, CELL_SIZE); - 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++ ) { - unsigned int loop_count = 0; - - do { - reg_desc = g_atm_priv_data.aal_desc[g_atm_priv_data.aal_desc_pos]; - if ( ++loop_count == 1000 ) - break; - } while ( reg_desc.own || !reg_desc.c ); // keep test OWN and C bit until data is ready - ASSERT(loop_count == 1, "loop_count = %u, own = %d, c = %d, aal_desc_pos = %u", loop_count, (int)reg_desc.own, (int)reg_desc.c, g_atm_priv_data.aal_desc_pos); - - 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); - } - reg_desc.err = 0; - } else if ( atm_charge(vcc, skb->truesize) ) { - new_skb = alloc_skb_rx(); - if ( new_skb != NULL ) { -#if defined(ENABLE_LESS_CACHE_INV) && ENABLE_LESS_CACHE_INV - if ( reg_desc.byteoff + reg_desc.datalen > LESS_CACHE_INV_LEN ) - dma_cache_inv((unsigned long)skb->data + LESS_CACHE_INV_LEN, reg_desc.byteoff + reg_desc.datalen - LESS_CACHE_INV_LEN); -#endif - - skb_reserve(skb, reg_desc.byteoff); - skb_put(skb, reg_desc.datalen); - ATM_SKB(skb)->vcc = vcc; - - 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); - } -} - -static void do_ppe_tasklet(unsigned long data) -{ - *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); -} - -static irqreturn_t mailbox_irq_handler(int irq, void *dev_id) -{ - if ( !*MBOX_IGU1_ISR ) - return IRQ_HANDLED; - - disable_irq_nosync(PPE_MAILBOX_IGU1_INT); - tasklet_schedule(&g_dma_tasklet); - - return IRQ_HANDLED; -} - -static inline void mailbox_signal(unsigned int queue, int is_tx) -{ - int count = 1000; - - if ( is_tx ) { - while ( MBOX_IGU3_ISR_ISR(queue + FIRST_QSB_QID + 16) && count > 0 ) - count--; - *MBOX_IGU3_ISRS = MBOX_IGU3_ISRS_SET(queue + FIRST_QSB_QID + 16); - } else { - while ( MBOX_IGU3_ISR_ISR(queue) && count > 0 ) - count--; - *MBOX_IGU3_ISRS = MBOX_IGU3_ISRS_SET(queue); - } - - ASSERT(count > 0, "queue = %u, is_tx = %d, MBOX_IGU3_ISR = 0x%08x", queue, is_tx, IFX_REG_R32(MBOX_IGU3_ISR)); -} - -static void set_qsb(struct atm_vcc *vcc, struct atm_qos *qos, unsigned int queue) -{ - struct clk *fpi_clk = clk_get_fpi(); - unsigned int qsb_clk = clk_get_rate(fpi_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; - - - /* - * 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; - } - -#if !defined(DISABLE_QOS_WORKAROUND) || !DISABLE_QOS_WORKAROUND - // 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; - } -#endif - - /* - * 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); - /* 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); - -} - -static void qsb_global_set(void) -{ - struct clk *fpi_clk = clk_get_fpi(); - unsigned int qsb_clk = clk_get_rate(fpi_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); - - /* - * 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); - /* 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); - } - } -} - -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, - clp: 0x01, - pid_mask: 0x02, - vpi_mask: 0x00, - vci_mask: 0x0000, - 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; -} - -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; -} - -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; -} - -static inline int ifx_atm_version(const struct ltq_atm_ops *ops, char *buf) -{ - int len = 0; - unsigned int major, minor; - - ops->fw_ver(&major, &minor); - - len += sprintf(buf + len, "ATM%d.%d.%d", IFX_ATM_VER_MAJOR, IFX_ATM_VER_MID, IFX_ATM_VER_MINOR); - len += sprintf(buf + len, " ATM (A1) firmware version %d.%d\n", major, minor); - - return len; -} - -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 -1; - 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 -1; - 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 -1; - 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 -1; - 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 -1; - 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 -1; - 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 0; -} - -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; -#ifndef CONFIG_AMAZON_SE - *CFG_WRX_QNUM = MAX_QUEUE_NUMBER; -#endif - *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 = 0xFF; - wrx_queue_config.cpimask = 0xFF; - 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; -} - -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.qsben = 1; - wtx_queue_config.sbid = 0; - for ( i = 0; i < MAX_TX_DMA_CHANNEL_NUMBER; i++ ) { - wtx_queue_config.qsb_vcid = 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; - } -} - -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 - - printk("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 0; -} - -static int atm_showtime_exit(void) -{ - if ( !g_showtime ) - return -1; - -#if defined(CONFIG_VR9) - IFX_REG_W32(0x00, UTP_CFG); -#endif - g_showtime = 0; - g_xdata_addr = NULL; - printk("leave showtime\n"); - return 0; -} - -extern struct ltq_atm_ops ar9_ops; -extern struct ltq_atm_ops vr9_ops; -extern struct ltq_atm_ops danube_ops; -extern struct ltq_atm_ops ase_ops; - -static const struct of_device_id ltq_atm_match[] = { -#ifdef CONFIG_DANUBE - { .compatible = "lantiq,ppe-danube", .data = &danube_ops }, -#elif defined CONFIG_AMAZON_SE - { .compatible = "lantiq,ppe-ase", .data = &ase_ops }, -#elif defined CONFIG_AR9 - { .compatible = "lantiq,ppe-arx100", .data = &ar9_ops }, -#elif defined CONFIG_VR9 - { .compatible = "lantiq,ppe-xrx200", .data = &vr9_ops }, -#endif - {}, -}; -MODULE_DEVICE_TABLE(of, ltq_atm_match); - -static int ltq_atm_probe(struct platform_device *pdev) -{ - const struct of_device_id *match; - struct ltq_atm_ops *ops = NULL; - int ret; - int port_num; - struct port_cell_info port_cell = {0}; - int i, j; - char ver_str[256]; - - match = of_match_device(ltq_atm_match, &pdev->dev); - if (!match) { - dev_err(&pdev->dev, "failed to find matching device\n"); - return -ENOENT; - } - ops = (struct ltq_atm_ops *) match->data; - - check_parameters(); - - ret = init_priv_data(); - if ( ret != 0 ) { - pr_err("INIT_PRIV_DATA_FAIL\n"); - goto INIT_PRIV_DATA_FAIL; - } - - ops->init(); - 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", NULL, &g_ifx_atm_ops, -1, NULL); - if ( !g_atm_priv_data.port[port_num].dev ) { - pr_err("failed to register atm device %d!\n", 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 ) { - pr_err("IRQ may be occupied by other driver, please reconfig to disable it.\n"); - } else { - pr_err("request_irq fail irq:%d\n", PPE_MAILBOX_IGU1_INT); - } - goto REQUEST_IRQ_PPE_MAILBOX_IGU1_INT_FAIL; - } - disable_irq(PPE_MAILBOX_IGU1_INT); - - - ret = ops->start(0); - if ( ret ) { - pr_err("ifx_pp32_start fail!\n"); - 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(); - - ifx_mei_atm_showtime_enter = atm_showtime_enter; - ifx_mei_atm_showtime_exit = atm_showtime_exit; - - ifx_atm_version(ops, ver_str); - printk(KERN_INFO "%s", ver_str); - platform_set_drvdata(pdev, ops); - printk("ifxmips_atm: ATM init succeed\n"); - - return 0; - -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; -} - -static int ltq_atm_remove(struct platform_device *pdev) -{ - int port_num; - struct ltq_atm_ops *ops = platform_get_drvdata(pdev); - - ifx_mei_atm_showtime_enter = NULL; - ifx_mei_atm_showtime_exit = NULL; - - invalidate_oam_htu_entry(); - - ops->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); - - ops->shutdown(); - - clear_priv_data(); - - return 0; -} - -static struct platform_driver ltq_atm_driver = { - .probe = ltq_atm_probe, - .remove = ltq_atm_remove, - .driver = { - .name = "atm", - .owner = THIS_MODULE, - .of_match_table = ltq_atm_match, - }, -}; - -module_platform_driver(ltq_atm_driver); - -MODULE_LICENSE("Dual BSD/GPL"); |