371 lines
8.1 KiB
C
371 lines
8.1 KiB
C
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/* $Id: mntfunc.c,v 1.19.6.4 2005/01/31 12:22:20 armin Exp $
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*
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* Driver for Eicon DIVA Server ISDN cards.
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* Maint module
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*
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* Copyright 2000-2003 by Armin Schindler (mac@melware.de)
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* Copyright 2000-2003 Cytronics & Melware (info@melware.de)
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*
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* This software may be used and distributed according to the terms
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* of the GNU General Public License, incorporated herein by reference.
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*/
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#include "platform.h"
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#include "di_defs.h"
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#include "divasync.h"
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#include "debug_if.h"
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extern char *DRIVERRELEASE_MNT;
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#define DBG_MINIMUM (DL_LOG + DL_FTL + DL_ERR)
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#define DBG_DEFAULT (DBG_MINIMUM + DL_XLOG + DL_REG)
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extern void DIVA_DIDD_Read(void *, int);
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static dword notify_handle;
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static DESCRIPTOR DAdapter;
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static DESCRIPTOR MAdapter;
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static DESCRIPTOR MaintDescriptor =
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{ IDI_DIMAINT, 0, 0, (IDI_CALL) diva_maint_prtComp };
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extern int diva_os_copy_to_user(void *os_handle, void __user *dst,
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const void *src, int length);
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extern int diva_os_copy_from_user(void *os_handle, void *dst,
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const void __user *src, int length);
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static void no_printf(unsigned char *x, ...)
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{
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/* dummy debug function */
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}
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#include "debuglib.c"
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/*
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* DIDD callback function
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*/
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static void *didd_callback(void *context, DESCRIPTOR *adapter,
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int removal)
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{
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if (adapter->type == IDI_DADAPTER) {
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DBG_ERR(("cb: Change in DAdapter ? Oops ?."));
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} else if (adapter->type == IDI_DIMAINT) {
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if (removal) {
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DbgDeregister();
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memset(&MAdapter, 0, sizeof(MAdapter));
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dprintf = no_printf;
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} else {
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memcpy(&MAdapter, adapter, sizeof(MAdapter));
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dprintf = (DIVA_DI_PRINTF) MAdapter.request;
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DbgRegister("MAINT", DRIVERRELEASE_MNT, DBG_DEFAULT);
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}
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} else if ((adapter->type > 0) && (adapter->type < 16)) {
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if (removal) {
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diva_mnt_remove_xdi_adapter(adapter);
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} else {
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diva_mnt_add_xdi_adapter(adapter);
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}
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}
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return (NULL);
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}
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/*
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* connect to didd
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*/
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static int __init connect_didd(void)
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{
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int x = 0;
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int dadapter = 0;
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IDI_SYNC_REQ req;
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DESCRIPTOR DIDD_Table[MAX_DESCRIPTORS];
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DIVA_DIDD_Read(DIDD_Table, sizeof(DIDD_Table));
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for (x = 0; x < MAX_DESCRIPTORS; x++) {
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if (DIDD_Table[x].type == IDI_DADAPTER) { /* DADAPTER found */
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dadapter = 1;
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memcpy(&DAdapter, &DIDD_Table[x], sizeof(DAdapter));
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req.didd_notify.e.Req = 0;
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req.didd_notify.e.Rc =
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IDI_SYNC_REQ_DIDD_REGISTER_ADAPTER_NOTIFY;
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req.didd_notify.info.callback = (void *)didd_callback;
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req.didd_notify.info.context = NULL;
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DAdapter.request((ENTITY *)&req);
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if (req.didd_notify.e.Rc != 0xff)
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return (0);
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notify_handle = req.didd_notify.info.handle;
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/* Register MAINT (me) */
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req.didd_add_adapter.e.Req = 0;
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req.didd_add_adapter.e.Rc =
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IDI_SYNC_REQ_DIDD_ADD_ADAPTER;
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req.didd_add_adapter.info.descriptor =
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(void *) &MaintDescriptor;
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DAdapter.request((ENTITY *)&req);
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if (req.didd_add_adapter.e.Rc != 0xff)
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return (0);
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} else if ((DIDD_Table[x].type > 0)
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&& (DIDD_Table[x].type < 16)) {
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diva_mnt_add_xdi_adapter(&DIDD_Table[x]);
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}
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}
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return (dadapter);
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}
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/*
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* disconnect from didd
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*/
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static void __exit disconnect_didd(void)
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{
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IDI_SYNC_REQ req;
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req.didd_notify.e.Req = 0;
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req.didd_notify.e.Rc = IDI_SYNC_REQ_DIDD_REMOVE_ADAPTER_NOTIFY;
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req.didd_notify.info.handle = notify_handle;
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DAdapter.request((ENTITY *)&req);
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req.didd_remove_adapter.e.Req = 0;
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req.didd_remove_adapter.e.Rc = IDI_SYNC_REQ_DIDD_REMOVE_ADAPTER;
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req.didd_remove_adapter.info.p_request =
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(IDI_CALL) MaintDescriptor.request;
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DAdapter.request((ENTITY *)&req);
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}
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/*
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* read/write maint
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*/
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int maint_read_write(void __user *buf, int count)
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{
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byte data[128];
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dword cmd, id, mask;
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int ret = 0;
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if (count < (3 * sizeof(dword)))
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return (-EFAULT);
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if (diva_os_copy_from_user(NULL, (void *) &data[0],
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buf, 3 * sizeof(dword))) {
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return (-EFAULT);
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}
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cmd = *(dword *)&data[0]; /* command */
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id = *(dword *)&data[4]; /* driver id */
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mask = *(dword *)&data[8]; /* mask or size */
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switch (cmd) {
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case DITRACE_CMD_GET_DRIVER_INFO:
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if ((ret = diva_get_driver_info(id, data, sizeof(data))) > 0) {
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if ((count < ret) || diva_os_copy_to_user
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(NULL, buf, (void *) &data[0], ret))
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ret = -EFAULT;
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} else {
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ret = -EINVAL;
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}
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break;
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case DITRACE_READ_DRIVER_DBG_MASK:
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if ((ret = diva_get_driver_dbg_mask(id, (byte *) data)) > 0) {
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if ((count < ret) || diva_os_copy_to_user
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(NULL, buf, (void *) &data[0], ret))
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ret = -EFAULT;
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} else {
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ret = -ENODEV;
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}
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break;
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case DITRACE_WRITE_DRIVER_DBG_MASK:
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if ((ret = diva_set_driver_dbg_mask(id, mask)) <= 0) {
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ret = -ENODEV;
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}
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break;
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/*
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Filter commands will ignore the ID due to fact that filtering affects
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the B- channel and Audio Tap trace levels only. Also MAINT driver will
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select the right trace ID by itself
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*/
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case DITRACE_WRITE_SELECTIVE_TRACE_FILTER:
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if (!mask) {
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ret = diva_set_trace_filter(1, "*");
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} else if (mask < sizeof(data)) {
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if (diva_os_copy_from_user(NULL, data, (char __user *)buf + 12, mask)) {
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ret = -EFAULT;
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} else {
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ret = diva_set_trace_filter((int)mask, data);
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}
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} else {
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ret = -EINVAL;
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}
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break;
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case DITRACE_READ_SELECTIVE_TRACE_FILTER:
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if ((ret = diva_get_trace_filter(sizeof(data), data)) > 0) {
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if (diva_os_copy_to_user(NULL, buf, data, ret))
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ret = -EFAULT;
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} else {
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ret = -ENODEV;
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}
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break;
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case DITRACE_READ_TRACE_ENTRY:{
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diva_os_spin_lock_magic_t old_irql;
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word size;
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diva_dbg_entry_head_t *pmsg;
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byte *pbuf;
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if (!(pbuf = diva_os_malloc(0, mask))) {
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return (-ENOMEM);
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}
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for (;;) {
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if (!(pmsg =
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diva_maint_get_message(&size, &old_irql))) {
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break;
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}
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if (size > mask) {
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diva_maint_ack_message(0, &old_irql);
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ret = -EINVAL;
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break;
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}
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ret = size;
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memcpy(pbuf, pmsg, size);
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diva_maint_ack_message(1, &old_irql);
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if ((count < size) ||
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diva_os_copy_to_user(NULL, buf, (void *) pbuf, size))
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ret = -EFAULT;
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break;
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}
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diva_os_free(0, pbuf);
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}
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break;
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case DITRACE_READ_TRACE_ENTRYS:{
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diva_os_spin_lock_magic_t old_irql;
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word size;
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diva_dbg_entry_head_t *pmsg;
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byte *pbuf = NULL;
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int written = 0;
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if (mask < 4096) {
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ret = -EINVAL;
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break;
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}
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if (!(pbuf = diva_os_malloc(0, mask))) {
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return (-ENOMEM);
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}
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for (;;) {
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if (!(pmsg =
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diva_maint_get_message(&size, &old_irql))) {
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break;
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}
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if ((size + 8) > mask) {
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diva_maint_ack_message(0, &old_irql);
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break;
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}
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/*
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Write entry length
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*/
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pbuf[written++] = (byte) size;
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pbuf[written++] = (byte) (size >> 8);
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pbuf[written++] = 0;
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pbuf[written++] = 0;
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/*
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Write message
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*/
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memcpy(&pbuf[written], pmsg, size);
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diva_maint_ack_message(1, &old_irql);
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written += size;
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mask -= (size + 4);
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}
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pbuf[written++] = 0;
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pbuf[written++] = 0;
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pbuf[written++] = 0;
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pbuf[written++] = 0;
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if ((count < written) || diva_os_copy_to_user(NULL, buf, (void *) pbuf, written)) {
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ret = -EFAULT;
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} else {
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ret = written;
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}
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diva_os_free(0, pbuf);
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}
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break;
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default:
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ret = -EINVAL;
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}
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return (ret);
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}
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/*
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* init
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*/
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int __init mntfunc_init(int *buffer_length, void **buffer,
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unsigned long diva_dbg_mem)
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{
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if (*buffer_length < 64) {
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*buffer_length = 64;
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}
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if (*buffer_length > 512) {
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*buffer_length = 512;
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}
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*buffer_length *= 1024;
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if (diva_dbg_mem) {
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*buffer = (void *) diva_dbg_mem;
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} else {
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while ((*buffer_length >= (64 * 1024))
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&&
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(!(*buffer = diva_os_malloc(0, *buffer_length)))) {
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*buffer_length -= 1024;
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}
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if (!*buffer) {
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DBG_ERR(("init: Can not alloc trace buffer"));
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return (0);
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}
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}
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if (diva_maint_init(*buffer, *buffer_length, (diva_dbg_mem == 0))) {
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if (!diva_dbg_mem) {
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diva_os_free(0, *buffer);
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}
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DBG_ERR(("init: maint init failed"));
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return (0);
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}
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if (!connect_didd()) {
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DBG_ERR(("init: failed to connect to DIDD."));
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diva_maint_finit();
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if (!diva_dbg_mem) {
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diva_os_free(0, *buffer);
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}
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return (0);
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}
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return (1);
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}
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/*
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* exit
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*/
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void __exit mntfunc_finit(void)
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{
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void *buffer;
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int i = 100;
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DbgDeregister();
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while (diva_mnt_shutdown_xdi_adapters() && i--) {
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diva_os_sleep(10);
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}
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disconnect_didd();
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if ((buffer = diva_maint_finit())) {
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diva_os_free(0, buffer);
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}
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memset(&MAdapter, 0, sizeof(MAdapter));
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dprintf = no_printf;
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}
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