diff options
Diffstat (limited to 'drivers/net/wan/sdla_ft1.c')
| -rw-r--r-- | drivers/net/wan/sdla_ft1.c | 344 |
1 files changed, 344 insertions, 0 deletions
diff --git a/drivers/net/wan/sdla_ft1.c b/drivers/net/wan/sdla_ft1.c new file mode 100644 index 000000000000..5e3124856eb0 --- /dev/null +++ b/drivers/net/wan/sdla_ft1.c @@ -0,0 +1,344 @@ +/***************************************************************************** +* sdla_chdlc.c WANPIPE(tm) Multiprotocol WAN Link Driver. Cisco HDLC module. +* +* Authors: Nenad Corbic <ncorbic@sangoma.com> +* Gideon Hack +* +* Copyright: (c) 1995-1999 Sangoma Technologies Inc. +* +* 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. +* ============================================================================ +* Sep 30, 1999 Nenad Corbic Fixed dynamic IP and route setup. +* Sep 23, 1999 Nenad Corbic Added SMP support, fixed tracing +* Sep 13, 1999 Nenad Corbic Split up Port 0 and 1 into separate devices. +* Jun 02, 1999 Gideon Hack Added support for the S514 adapter. +* Oct 30, 1998 Jaspreet Singh Added Support for CHDLC API (HDLC STREAMING). +* Oct 28, 1998 Jaspreet Singh Added Support for Dual Port CHDLC. +* Aug 07, 1998 David Fong Initial version. +*****************************************************************************/ + +#include <linux/module.h> +#include <linux/kernel.h> /* printk(), and other useful stuff */ +#include <linux/stddef.h> /* offsetof(), etc. */ +#include <linux/errno.h> /* return codes */ +#include <linux/string.h> /* inline memset(), etc. */ +#include <linux/slab.h> /* kmalloc(), kfree() */ +#include <linux/wanrouter.h> /* WAN router definitions */ +#include <linux/wanpipe.h> /* WANPIPE common user API definitions */ +#include <linux/if_arp.h> /* ARPHRD_* defines */ + +#include <linux/inetdevice.h> +#include <asm/uaccess.h> + +#include <linux/in.h> /* sockaddr_in */ +#include <linux/inet.h> +#include <linux/if.h> +#include <asm/byteorder.h> /* htons(), etc. */ +#include <linux/sdlapci.h> +#include <asm/io.h> + +#include <linux/sdla_chdlc.h> /* CHDLC firmware API definitions */ + +/****** Defines & Macros ****************************************************/ + +/* reasons for enabling the timer interrupt on the adapter */ +#define TMR_INT_ENABLED_UDP 0x0001 +#define TMR_INT_ENABLED_UPDATE 0x0002 + +#define CHDLC_DFLT_DATA_LEN 1500 /* default MTU */ +#define CHDLC_HDR_LEN 1 + +#define IFF_POINTTOPOINT 0x10 + +#define WANPIPE 0x00 +#define API 0x01 +#define CHDLC_API 0x01 + +#define PORT(x) (x == 0 ? "PRIMARY" : "SECONDARY" ) + + +/******Data Structures*****************************************************/ + +/* This structure is placed in the private data area of the device structure. + * The card structure used to occupy the private area but now the following + * structure will incorporate the card structure along with CHDLC specific data + */ + +typedef struct chdlc_private_area +{ + struct net_device *slave; + sdla_t *card; + int TracingEnabled; /* For enabling Tracing */ + unsigned long curr_trace_addr; /* Used for Tracing */ + unsigned long start_trace_addr; + unsigned long end_trace_addr; + unsigned long base_addr_trace_buffer; + unsigned long end_addr_trace_buffer; + unsigned short number_trace_elements; + unsigned available_buffer_space; + unsigned long router_start_time; + unsigned char route_status; + unsigned char route_removed; + unsigned long tick_counter; /* For 5s timeout counter */ + unsigned long router_up_time; + u32 IP_address; /* IP addressing */ + u32 IP_netmask; + unsigned char mc; /* Mulitcast support on/off */ + unsigned short udp_pkt_lgth; /* udp packet processing */ + char udp_pkt_src; + char udp_pkt_data[MAX_LGTH_UDP_MGNT_PKT]; + unsigned short timer_int_enabled; + char update_comms_stats; /* updating comms stats */ + //FIXME: add driver stats as per frame relay! + +} chdlc_private_area_t; + +/* Route Status options */ +#define NO_ROUTE 0x00 +#define ADD_ROUTE 0x01 +#define ROUTE_ADDED 0x02 +#define REMOVE_ROUTE 0x03 + + +/****** Function Prototypes *************************************************/ +/* WAN link driver entry points. These are called by the WAN router module. */ +static int wpft1_exec (struct sdla *card, void *u_cmd, void *u_data); +static int chdlc_read_version (sdla_t* card, char* str); +static int chdlc_error (sdla_t *card, int err, CHDLC_MAILBOX_STRUCT *mb); + +/****** Public Functions ****************************************************/ + +/*============================================================================ + * Cisco HDLC protocol initialization routine. + * + * This routine is called by the main WANPIPE module during setup. At this + * point adapter is completely initialized and firmware is running. + * o read firmware version (to make sure it's alive) + * o configure adapter + * o initialize protocol-specific fields of the adapter data space. + * + * Return: 0 o.k. + * < 0 failure. + */ +int wpft1_init (sdla_t* card, wandev_conf_t* conf) +{ + unsigned char port_num; + int err; + + union + { + char str[80]; + } u; + volatile CHDLC_MAILBOX_STRUCT* mb; + CHDLC_MAILBOX_STRUCT* mb1; + unsigned long timeout; + + /* Verify configuration ID */ + if (conf->config_id != WANCONFIG_CHDLC) { + printk(KERN_INFO "%s: invalid configuration ID %u!\n", + card->devname, conf->config_id); + return -EINVAL; + } + + /* Use primary port */ + card->u.c.comm_port = 0; + + + /* Initialize protocol-specific fields */ + if(card->hw.type != SDLA_S514){ + card->mbox = (void *) card->hw.dpmbase; + }else{ + card->mbox = (void *) card->hw.dpmbase + PRI_BASE_ADDR_MB_STRUCT; + } + + mb = mb1 = card->mbox; + + if (!card->configured){ + + /* The board will place an 'I' in the return code to indicate that it is + ready to accept commands. We expect this to be completed in less + than 1 second. */ + + timeout = jiffies; + while (mb->return_code != 'I') /* Wait 1s for board to initialize */ + if ((jiffies - timeout) > 1*HZ) break; + + if (mb->return_code != 'I') { + printk(KERN_INFO + "%s: Initialization not completed by adapter\n", + card->devname); + printk(KERN_INFO "Please contact Sangoma representative.\n"); + return -EIO; + } + } + + /* Read firmware version. Note that when adapter initializes, it + * clears the mailbox, so it may appear that the first command was + * executed successfully when in fact it was merely erased. To work + * around this, we execute the first command twice. + */ + + if (chdlc_read_version(card, u.str)) + return -EIO; + + printk(KERN_INFO "%s: Running FT1 Configuration firmware v%s\n", + card->devname, u.str); + + card->isr = NULL; + card->poll = NULL; + card->exec = &wpft1_exec; + card->wandev.update = NULL; + card->wandev.new_if = NULL; + card->wandev.del_if = NULL; + card->wandev.state = WAN_DUALPORT; + card->wandev.udp_port = conf->udp_port; + + card->wandev.new_if_cnt = 0; + + /* This is for the ports link state */ + card->u.c.state = WAN_DISCONNECTED; + + /* reset the number of times the 'update()' proc has been called */ + card->u.c.update_call_count = 0; + + card->wandev.ttl = 0x7F; + card->wandev.interface = 0; + + card->wandev.clocking = 0; + + port_num = card->u.c.comm_port; + + /* Setup Port Bps */ + + card->wandev.bps = 0; + + card->wandev.mtu = MIN_LGTH_CHDLC_DATA_CFG; + + /* Set up the interrupt status area */ + /* Read the CHDLC Configuration and obtain: + * Ptr to shared memory infor struct + * Use this pointer to calculate the value of card->u.c.flags ! + */ + mb1->buffer_length = 0; + mb1->command = READ_CHDLC_CONFIGURATION; + err = sdla_exec(mb1) ? mb1->return_code : CMD_TIMEOUT; + if(err != COMMAND_OK) { + chdlc_error(card, err, mb1); + return -EIO; + } + + if(card->hw.type == SDLA_S514){ + card->u.c.flags = (void *)(card->hw.dpmbase + + (((CHDLC_CONFIGURATION_STRUCT *)mb1->data)-> + ptr_shared_mem_info_struct)); + }else{ + card->u.c.flags = (void *)(card->hw.dpmbase + + (((CHDLC_CONFIGURATION_STRUCT *)mb1->data)-> + ptr_shared_mem_info_struct % SDLA_WINDOWSIZE)); + } + + card->wandev.state = WAN_FT1_READY; + printk(KERN_INFO "%s: FT1 Config Ready !\n",card->devname); + + return 0; +} + +static int wpft1_exec(sdla_t *card, void *u_cmd, void *u_data) +{ + CHDLC_MAILBOX_STRUCT* mbox = card->mbox; + int len; + + if (copy_from_user((void*)&mbox->command, u_cmd, sizeof(ft1_exec_cmd_t))){ + return -EFAULT; + } + + len = mbox->buffer_length; + + if (len) { + if( copy_from_user((void*)&mbox->data, u_data, len)){ + return -EFAULT; + } + } + + /* execute command */ + if (!sdla_exec(mbox)){ + return -EIO; + } + + /* return result */ + if( copy_to_user(u_cmd, (void*)&mbox->command, sizeof(ft1_exec_cmd_t))){ + return -EFAULT; + } + + len = mbox->buffer_length; + + if (len && u_data && copy_to_user(u_data, (void*)&mbox->data, len)){ + return -EFAULT; + } + + return 0; + +} + +/*============================================================================ + * Read firmware code version. + * Put code version as ASCII string in str. + */ +static int chdlc_read_version (sdla_t* card, char* str) +{ + CHDLC_MAILBOX_STRUCT* mb = card->mbox; + int len; + char err; + mb->buffer_length = 0; + mb->command = READ_CHDLC_CODE_VERSION; + err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT; + + if(err != COMMAND_OK) { + chdlc_error(card,err,mb); + } + else if (str) { /* is not null */ + len = mb->buffer_length; + memcpy(str, mb->data, len); + str[len] = '\0'; + } + return (err); +} + +/*============================================================================ + * Firmware error handler. + * This routine is called whenever firmware command returns non-zero + * return code. + * + * Return zero if previous command has to be cancelled. + */ +static int chdlc_error (sdla_t *card, int err, CHDLC_MAILBOX_STRUCT *mb) +{ + unsigned cmd = mb->command; + + switch (err) { + + case CMD_TIMEOUT: + printk(KERN_ERR "%s: command 0x%02X timed out!\n", + card->devname, cmd); + break; + + case S514_BOTH_PORTS_SAME_CLK_MODE: + if(cmd == SET_CHDLC_CONFIGURATION) { + printk(KERN_INFO + "%s: Configure both ports for the same clock source\n", + card->devname); + break; + } + + default: + printk(KERN_INFO "%s: command 0x%02X returned 0x%02X!\n", + card->devname, cmd, err); + } + + return 0; +} + +MODULE_LICENSE("GPL"); |