diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-20 21:04:47 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-20 21:04:47 -0700 |
commit | 3b59bf081622b6446db77ad06c93fe23677bc533 (patch) | |
tree | 3f4bb5a27c90cc86994a1f6d3c53fbf9208003cb /drivers/isdn/hardware/eicon/dadapter.c | |
parent | e45836fafe157df137a837093037f741ad8f4c90 (diff) | |
parent | bbdb32cb5b73597386913d052165423b9d736145 (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking merge from David Miller:
"1) Move ixgbe driver over to purely page based buffering on receive.
From Alexander Duyck.
2) Add receive packet steering support to e1000e, from Bruce Allan.
3) Convert TCP MD5 support over to RCU, from Eric Dumazet.
4) Reduce cpu usage in handling out-of-order TCP packets on modern
systems, also from Eric Dumazet.
5) Support the IP{,V6}_UNICAST_IF socket options, making the wine
folks happy, from Erich Hoover.
6) Support VLAN trunking from guests in hyperv driver, from Haiyang
Zhang.
7) Support byte-queue-limtis in r8169, from Igor Maravic.
8) Outline code intended for IP_RECVTOS in IP_PKTOPTIONS existed but
was never properly implemented, Jiri Benc fixed that.
9) 64-bit statistics support in r8169 and 8139too, from Junchang Wang.
10) Support kernel side dump filtering by ctmark in netfilter
ctnetlink, from Pablo Neira Ayuso.
11) Support byte-queue-limits in gianfar driver, from Paul Gortmaker.
12) Add new peek socket options to assist with socket migration, from
Pavel Emelyanov.
13) Add sch_plug packet scheduler whose queue is controlled by
userland daemons using explicit freeze and release commands. From
Shriram Rajagopalan.
14) Fix FCOE checksum offload handling on transmit, from Yi Zou."
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1846 commits)
Fix pppol2tp getsockname()
Remove printk from rds_sendmsg
ipv6: fix incorrent ipv6 ipsec packet fragment
cpsw: Hook up default ndo_change_mtu.
net: qmi_wwan: fix build error due to cdc-wdm dependecy
netdev: driver: ethernet: Add TI CPSW driver
netdev: driver: ethernet: add cpsw address lookup engine support
phy: add am79c874 PHY support
mlx4_core: fix race on comm channel
bonding: send igmp report for its master
fs_enet: Add MPC5125 FEC support and PHY interface selection
net: bpf_jit: fix BPF_S_LDX_B_MSH compilation
net: update the usage of CHECKSUM_UNNECESSARY
fcoe: use CHECKSUM_UNNECESSARY instead of CHECKSUM_PARTIAL on tx
net: do not do gso for CHECKSUM_UNNECESSARY in netif_needs_gso
ixgbe: Fix issues with SR-IOV loopback when flow control is disabled
net/hyperv: Fix the code handling tx busy
ixgbe: fix namespace issues when FCoE/DCB is not enabled
rtlwifi: Remove unused ETH_ADDR_LEN defines
igbvf: Use ETH_ALEN
...
Fix up fairly trivial conflicts in drivers/isdn/gigaset/interface.c and
drivers/net/usb/{Kconfig,qmi_wwan.c} as per David.
Diffstat (limited to 'drivers/isdn/hardware/eicon/dadapter.c')
-rw-r--r-- | drivers/isdn/hardware/eicon/dadapter.c | 576 |
1 files changed, 287 insertions, 289 deletions
diff --git a/drivers/isdn/hardware/eicon/dadapter.c b/drivers/isdn/hardware/eicon/dadapter.c index 89497890158..51420999418 100644 --- a/drivers/isdn/hardware/eicon/dadapter.c +++ b/drivers/isdn/hardware/eicon/dadapter.c @@ -1,26 +1,25 @@ - /* * - Copyright (c) Eicon Networks, 2002. + Copyright (c) Eicon Networks, 2002. * - This source file is supplied for the use with - Eicon Networks range of DIVA Server Adapters. + This source file is supplied for the use with + Eicon Networks range of DIVA Server Adapters. * - Eicon File Revision : 2.1 + Eicon File Revision : 2.1 * - 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, or (at your option) - any later version. + 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, or (at your option) + any later version. * - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY OF ANY KIND WHATSOEVER INCLUDING ANY - implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - See the GNU General Public License for more details. + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY OF ANY KIND WHATSOEVER INCLUDING ANY + implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + See the GNU General Public License for more details. * - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * */ #include "platform.h" @@ -30,337 +29,336 @@ #include "divasync.h" #include "dadapter.h" /* -------------------------------------------------------------------------- - Adapter array change notification framework + Adapter array change notification framework -------------------------------------------------------------------------- */ typedef struct _didd_adapter_change_notification { - didd_adapter_change_callback_t callback; - void IDI_CALL_ENTITY_T * context; -} didd_adapter_change_notification_t, \ - * IDI_CALL_ENTITY_T pdidd_adapter_change_notification_t; + didd_adapter_change_callback_t callback; + void IDI_CALL_ENTITY_T *context; +} didd_adapter_change_notification_t, \ + * IDI_CALL_ENTITY_T pdidd_adapter_change_notification_t; #define DIVA_DIDD_MAX_NOTIFICATIONS 256 -static didd_adapter_change_notification_t\ - NotificationTable[DIVA_DIDD_MAX_NOTIFICATIONS]; +static didd_adapter_change_notification_t \ +NotificationTable[DIVA_DIDD_MAX_NOTIFICATIONS]; /* -------------------------------------------------------------------------- - Array to held adapter information + Array to held adapter information -------------------------------------------------------------------------- */ static DESCRIPTOR HandleTable[NEW_MAX_DESCRIPTORS]; static dword Adapters = 0; /* Number of adapters */ /* -------------------------------------------------------------------------- - Shadow IDI_DIMAINT - and 'shadow' debug stuff + Shadow IDI_DIMAINT + and 'shadow' debug stuff -------------------------------------------------------------------------- */ -static void no_printf (unsigned char * format, ...) +static void no_printf(unsigned char *format, ...) { #ifdef EBUG va_list ap; - va_start (ap, format); + va_start(ap, format); debug((format, ap)); - va_end (ap); + va_end(ap); #endif } /* ------------------------------------------------------------------------- - Portable debug Library - ------------------------------------------------------------------------- */ + Portable debug Library + ------------------------------------------------------------------------- */ #include "debuglib.c" - + static DESCRIPTOR MAdapter = {IDI_DIMAINT, /* Adapter Type */ - 0x00, /* Channels */ - 0x0000, /* Features */ - (IDI_CALL)no_printf}; + 0x00, /* Channels */ + 0x0000, /* Features */ + (IDI_CALL)no_printf}; /* -------------------------------------------------------------------------- - DAdapter. Only IDI clients with buffer, that is huge enough to - get all descriptors will receive information about DAdapter - { byte type, byte channels, word features, IDI_CALL request } + DAdapter. Only IDI clients with buffer, that is huge enough to + get all descriptors will receive information about DAdapter + { byte type, byte channels, word features, IDI_CALL request } -------------------------------------------------------------------------- */ -static void IDI_CALL_LINK_T diva_dadapter_request (ENTITY IDI_CALL_ENTITY_T *); +static void IDI_CALL_LINK_T diva_dadapter_request(ENTITY IDI_CALL_ENTITY_T *); static DESCRIPTOR DAdapter = {IDI_DADAPTER, /* Adapter Type */ - 0x00, /* Channels */ - 0x0000, /* Features */ - diva_dadapter_request }; + 0x00, /* Channels */ + 0x0000, /* Features */ + diva_dadapter_request }; /* -------------------------------------------------------------------------- - LOCALS + LOCALS -------------------------------------------------------------------------- */ -static dword diva_register_adapter_callback (\ - didd_adapter_change_callback_t callback, - void IDI_CALL_ENTITY_T* context); -static void diva_remove_adapter_callback (dword handle); -static void diva_notify_adapter_change (DESCRIPTOR* d, int removal); +static dword diva_register_adapter_callback(\ + didd_adapter_change_callback_t callback, + void IDI_CALL_ENTITY_T *context); +static void diva_remove_adapter_callback(dword handle); +static void diva_notify_adapter_change(DESCRIPTOR *d, int removal); static diva_os_spin_lock_t didd_spin; /* -------------------------------------------------------------------------- - Should be called as first step, after driver init - -------------------------------------------------------------------------- */ -void diva_didd_load_time_init (void) { - memset (&HandleTable[0], 0x00, sizeof(HandleTable)); - memset (&NotificationTable[0], 0x00, sizeof(NotificationTable)); - diva_os_initialize_spin_lock (&didd_spin, "didd"); + Should be called as first step, after driver init + -------------------------------------------------------------------------- */ +void diva_didd_load_time_init(void) { + memset(&HandleTable[0], 0x00, sizeof(HandleTable)); + memset(&NotificationTable[0], 0x00, sizeof(NotificationTable)); + diva_os_initialize_spin_lock(&didd_spin, "didd"); } /* -------------------------------------------------------------------------- - Should be called as last step, if driver does unload - -------------------------------------------------------------------------- */ -void diva_didd_load_time_finit (void) { - diva_os_destroy_spin_lock (&didd_spin, "didd"); + Should be called as last step, if driver does unload + -------------------------------------------------------------------------- */ +void diva_didd_load_time_finit(void) { + diva_os_destroy_spin_lock(&didd_spin, "didd"); } /* -------------------------------------------------------------------------- - Called in order to register new adapter in adapter array - return adapter handle (> 0) on success - return -1 adapter array overflow - -------------------------------------------------------------------------- */ -static int diva_didd_add_descriptor (DESCRIPTOR* d) { - diva_os_spin_lock_magic_t irql; - int i; - if (d->type == IDI_DIMAINT) { - if (d->request) { - MAdapter.request = d->request; - dprintf = (DIVA_DI_PRINTF)d->request; - diva_notify_adapter_change (&MAdapter, 0); /* Inserted */ - DBG_TRC (("DIMAINT registered, dprintf=%08x", d->request)) - } else { - DBG_TRC (("DIMAINT removed")) - diva_notify_adapter_change (&MAdapter, 1); /* About to remove */ - MAdapter.request = (IDI_CALL)no_printf; - dprintf = no_printf; - } - return (NEW_MAX_DESCRIPTORS); - } - for (i = 0; i < NEW_MAX_DESCRIPTORS; i++) { - diva_os_enter_spin_lock (&didd_spin, &irql, "didd_add"); - if (HandleTable[i].type == 0) { - memcpy (&HandleTable[i], d, sizeof(*d)); - Adapters++; - diva_os_leave_spin_lock (&didd_spin, &irql, "didd_add"); - diva_notify_adapter_change (d, 0); /* we have new adapter */ - DBG_TRC (("Add adapter[%d], request=%08x", (i+1), d->request)) - return (i+1); - } - diva_os_leave_spin_lock (&didd_spin, &irql, "didd_add"); - } - DBG_ERR (("Can't add adapter, out of resources")) - return (-1); + Called in order to register new adapter in adapter array + return adapter handle (> 0) on success + return -1 adapter array overflow + -------------------------------------------------------------------------- */ +static int diva_didd_add_descriptor(DESCRIPTOR *d) { + diva_os_spin_lock_magic_t irql; + int i; + if (d->type == IDI_DIMAINT) { + if (d->request) { + MAdapter.request = d->request; + dprintf = (DIVA_DI_PRINTF)d->request; + diva_notify_adapter_change(&MAdapter, 0); /* Inserted */ + DBG_TRC(("DIMAINT registered, dprintf=%08x", d->request)) + } else { + DBG_TRC(("DIMAINT removed")) + diva_notify_adapter_change(&MAdapter, 1); /* About to remove */ + MAdapter.request = (IDI_CALL)no_printf; + dprintf = no_printf; + } + return (NEW_MAX_DESCRIPTORS); + } + for (i = 0; i < NEW_MAX_DESCRIPTORS; i++) { + diva_os_enter_spin_lock(&didd_spin, &irql, "didd_add"); + if (HandleTable[i].type == 0) { + memcpy(&HandleTable[i], d, sizeof(*d)); + Adapters++; + diva_os_leave_spin_lock(&didd_spin, &irql, "didd_add"); + diva_notify_adapter_change(d, 0); /* we have new adapter */ + DBG_TRC(("Add adapter[%d], request=%08x", (i + 1), d->request)) + return (i + 1); + } + diva_os_leave_spin_lock(&didd_spin, &irql, "didd_add"); + } + DBG_ERR(("Can't add adapter, out of resources")) + return (-1); } /* -------------------------------------------------------------------------- - Called in order to remove one registered adapter from array - return adapter handle (> 0) on success - return 0 on success - -------------------------------------------------------------------------- */ -static int diva_didd_remove_descriptor (IDI_CALL request) { - diva_os_spin_lock_magic_t irql; - int i; - if (request == MAdapter.request) { - DBG_TRC(("DIMAINT removed")) - dprintf = no_printf; - diva_notify_adapter_change (&MAdapter, 1); /* About to remove */ - MAdapter.request = (IDI_CALL)no_printf; - return (0); - } - for (i = 0; (Adapters && (i < NEW_MAX_DESCRIPTORS)); i++) { - if (HandleTable[i].request == request) { - diva_notify_adapter_change (&HandleTable[i], 1); /* About to remove */ - diva_os_enter_spin_lock (&didd_spin, &irql, "didd_rm"); - memset (&HandleTable[i], 0x00, sizeof(HandleTable[0])); - Adapters--; - diva_os_leave_spin_lock (&didd_spin, &irql, "didd_rm"); - DBG_TRC (("Remove adapter[%d], request=%08x", (i+1), request)) - return (0); - } - } - DBG_ERR (("Invalid request=%08x, can't remove adapter", request)) - return (-1); + Called in order to remove one registered adapter from array + return adapter handle (> 0) on success + return 0 on success + -------------------------------------------------------------------------- */ +static int diva_didd_remove_descriptor(IDI_CALL request) { + diva_os_spin_lock_magic_t irql; + int i; + if (request == MAdapter.request) { + DBG_TRC(("DIMAINT removed")) + dprintf = no_printf; + diva_notify_adapter_change(&MAdapter, 1); /* About to remove */ + MAdapter.request = (IDI_CALL)no_printf; + return (0); + } + for (i = 0; (Adapters && (i < NEW_MAX_DESCRIPTORS)); i++) { + if (HandleTable[i].request == request) { + diva_notify_adapter_change(&HandleTable[i], 1); /* About to remove */ + diva_os_enter_spin_lock(&didd_spin, &irql, "didd_rm"); + memset(&HandleTable[i], 0x00, sizeof(HandleTable[0])); + Adapters--; + diva_os_leave_spin_lock(&didd_spin, &irql, "didd_rm"); + DBG_TRC(("Remove adapter[%d], request=%08x", (i + 1), request)) + return (0); + } + } + DBG_ERR(("Invalid request=%08x, can't remove adapter", request)) + return (-1); } /* -------------------------------------------------------------------------- - Read adapter array - return 1 if not enough space to save all available adapters + Read adapter array + return 1 if not enough space to save all available adapters -------------------------------------------------------------------------- */ -static int diva_didd_read_adapter_array (DESCRIPTOR* buffer, int length) { - diva_os_spin_lock_magic_t irql; - int src, dst; - memset (buffer, 0x00, length); - length /= sizeof(DESCRIPTOR); - DBG_TRC (("DIDD_Read, space = %d, Adapters = %d", length, Adapters+2)) - - diva_os_enter_spin_lock (&didd_spin, &irql, "didd_read"); - for (src = 0, dst = 0; - (Adapters && (src < NEW_MAX_DESCRIPTORS) && (dst < length)); - src++) { - if (HandleTable[src].type) { - memcpy (&buffer[dst], &HandleTable[src], sizeof(DESCRIPTOR)); - dst++; - } - } - diva_os_leave_spin_lock (&didd_spin, &irql, "didd_read"); - if (dst < length) { - memcpy (&buffer[dst], &MAdapter, sizeof(DESCRIPTOR)); - dst++; - } else { - DBG_ERR (("Can't write DIMAINT. Array too small")) - } - if (dst < length) { - memcpy (&buffer[dst], &DAdapter, sizeof(DESCRIPTOR)); - dst++; - } else { - DBG_ERR (("Can't write DADAPTER. Array too small")) - } - DBG_TRC (("Read %d adapters", dst)) - return (dst == length); +static int diva_didd_read_adapter_array(DESCRIPTOR *buffer, int length) { + diva_os_spin_lock_magic_t irql; + int src, dst; + memset(buffer, 0x00, length); + length /= sizeof(DESCRIPTOR); + DBG_TRC(("DIDD_Read, space = %d, Adapters = %d", length, Adapters + 2)) + + diva_os_enter_spin_lock(&didd_spin, &irql, "didd_read"); + for (src = 0, dst = 0; + (Adapters && (src < NEW_MAX_DESCRIPTORS) && (dst < length)); + src++) { + if (HandleTable[src].type) { + memcpy(&buffer[dst], &HandleTable[src], sizeof(DESCRIPTOR)); + dst++; + } + } + diva_os_leave_spin_lock(&didd_spin, &irql, "didd_read"); + if (dst < length) { + memcpy(&buffer[dst], &MAdapter, sizeof(DESCRIPTOR)); + dst++; + } else { + DBG_ERR(("Can't write DIMAINT. Array too small")) + } + if (dst < length) { + memcpy(&buffer[dst], &DAdapter, sizeof(DESCRIPTOR)); + dst++; + } else { + DBG_ERR(("Can't write DADAPTER. Array too small")) + } + DBG_TRC(("Read %d adapters", dst)) + return (dst == length); } /* -------------------------------------------------------------------------- - DAdapter request function. - This function does process only synchronous requests, and is used - for reception/registration of new interfaces + DAdapter request function. + This function does process only synchronous requests, and is used + for reception/registration of new interfaces -------------------------------------------------------------------------- */ -static void IDI_CALL_LINK_T diva_dadapter_request (\ - ENTITY IDI_CALL_ENTITY_T *e) { - IDI_SYNC_REQ *syncReq = (IDI_SYNC_REQ *)e ; - if (e->Req) { /* We do not process it, also return error */ - e->Rc = OUT_OF_RESOURCES; - DBG_ERR (("Can't process async request, Req=%02x", e->Req)) - return; - } - /* - So, we process sync request - */ - switch (e->Rc) { - case IDI_SYNC_REQ_DIDD_REGISTER_ADAPTER_NOTIFY: { - diva_didd_adapter_notify_t* pinfo = &syncReq->didd_notify.info; - pinfo->handle = diva_register_adapter_callback (\ - (didd_adapter_change_callback_t)pinfo->callback, - (void IDI_CALL_ENTITY_T *)pinfo->context); - e->Rc = 0xff; - } break; - case IDI_SYNC_REQ_DIDD_REMOVE_ADAPTER_NOTIFY: { - diva_didd_adapter_notify_t* pinfo = &syncReq->didd_notify.info; - diva_remove_adapter_callback (pinfo->handle); - e->Rc = 0xff; - } break; - case IDI_SYNC_REQ_DIDD_ADD_ADAPTER: { - diva_didd_add_adapter_t* pinfo = &syncReq->didd_add_adapter.info; - if (diva_didd_add_descriptor ((DESCRIPTOR*)pinfo->descriptor) < 0) { - e->Rc = OUT_OF_RESOURCES; - } else { - e->Rc = 0xff; - } - } break; - case IDI_SYNC_REQ_DIDD_REMOVE_ADAPTER: { - diva_didd_remove_adapter_t* pinfo = &syncReq->didd_remove_adapter.info; - if (diva_didd_remove_descriptor ((IDI_CALL)pinfo->p_request) < 0) { - e->Rc = OUT_OF_RESOURCES; - } else { - e->Rc = 0xff; - } - } break; - case IDI_SYNC_REQ_DIDD_READ_ADAPTER_ARRAY: { - diva_didd_read_adapter_array_t* pinfo =\ - &syncReq->didd_read_adapter_array.info; - if (diva_didd_read_adapter_array ((DESCRIPTOR*)pinfo->buffer, - (int)pinfo->length)) { - e->Rc = OUT_OF_RESOURCES; - } else { - e->Rc = 0xff; - } - } break; - default: - DBG_ERR (("Can't process sync request, Req=%02x", e->Rc)) - e->Rc = OUT_OF_RESOURCES; - } +static void IDI_CALL_LINK_T diva_dadapter_request( \ + ENTITY IDI_CALL_ENTITY_T *e) { + IDI_SYNC_REQ *syncReq = (IDI_SYNC_REQ *)e; + if (e->Req) { /* We do not process it, also return error */ + e->Rc = OUT_OF_RESOURCES; + DBG_ERR(("Can't process async request, Req=%02x", e->Req)) + return; + } + /* + So, we process sync request + */ + switch (e->Rc) { + case IDI_SYNC_REQ_DIDD_REGISTER_ADAPTER_NOTIFY: { + diva_didd_adapter_notify_t *pinfo = &syncReq->didd_notify.info; + pinfo->handle = diva_register_adapter_callback( \ + (didd_adapter_change_callback_t)pinfo->callback, + (void IDI_CALL_ENTITY_T *)pinfo->context); + e->Rc = 0xff; + } break; + case IDI_SYNC_REQ_DIDD_REMOVE_ADAPTER_NOTIFY: { + diva_didd_adapter_notify_t *pinfo = &syncReq->didd_notify.info; + diva_remove_adapter_callback(pinfo->handle); + e->Rc = 0xff; + } break; + case IDI_SYNC_REQ_DIDD_ADD_ADAPTER: { + diva_didd_add_adapter_t *pinfo = &syncReq->didd_add_adapter.info; + if (diva_didd_add_descriptor((DESCRIPTOR *)pinfo->descriptor) < 0) { + e->Rc = OUT_OF_RESOURCES; + } else { + e->Rc = 0xff; + } + } break; + case IDI_SYNC_REQ_DIDD_REMOVE_ADAPTER: { + diva_didd_remove_adapter_t *pinfo = &syncReq->didd_remove_adapter.info; + if (diva_didd_remove_descriptor((IDI_CALL)pinfo->p_request) < 0) { + e->Rc = OUT_OF_RESOURCES; + } else { + e->Rc = 0xff; + } + } break; + case IDI_SYNC_REQ_DIDD_READ_ADAPTER_ARRAY: { + diva_didd_read_adapter_array_t *pinfo =\ + &syncReq->didd_read_adapter_array.info; + if (diva_didd_read_adapter_array((DESCRIPTOR *)pinfo->buffer, + (int)pinfo->length)) { + e->Rc = OUT_OF_RESOURCES; + } else { + e->Rc = 0xff; + } + } break; + default: + DBG_ERR(("Can't process sync request, Req=%02x", e->Rc)) + e->Rc = OUT_OF_RESOURCES; + } } /* -------------------------------------------------------------------------- - IDI client does register his notification function - -------------------------------------------------------------------------- */ -static dword diva_register_adapter_callback (\ - didd_adapter_change_callback_t callback, - void IDI_CALL_ENTITY_T* context) { - diva_os_spin_lock_magic_t irql; - dword i; - - for (i = 0; i < DIVA_DIDD_MAX_NOTIFICATIONS; i++) { - diva_os_enter_spin_lock (&didd_spin, &irql, "didd_nfy_add"); - if (!NotificationTable[i].callback) { - NotificationTable[i].callback = callback; - NotificationTable[i].context = context; - diva_os_leave_spin_lock (&didd_spin, &irql, "didd_nfy_add"); - DBG_TRC(("Register adapter notification[%d]=%08x", i+1, callback)) - return (i+1); - } - diva_os_leave_spin_lock (&didd_spin, &irql, "didd_nfy_add"); - } - DBG_ERR (("Can't register adapter notification, overflow")) - return (0); + IDI client does register his notification function + -------------------------------------------------------------------------- */ +static dword diva_register_adapter_callback( \ + didd_adapter_change_callback_t callback, + void IDI_CALL_ENTITY_T *context) { + diva_os_spin_lock_magic_t irql; + dword i; + + for (i = 0; i < DIVA_DIDD_MAX_NOTIFICATIONS; i++) { + diva_os_enter_spin_lock(&didd_spin, &irql, "didd_nfy_add"); + if (!NotificationTable[i].callback) { + NotificationTable[i].callback = callback; + NotificationTable[i].context = context; + diva_os_leave_spin_lock(&didd_spin, &irql, "didd_nfy_add"); + DBG_TRC(("Register adapter notification[%d]=%08x", i + 1, callback)) + return (i + 1); + } + diva_os_leave_spin_lock(&didd_spin, &irql, "didd_nfy_add"); + } + DBG_ERR(("Can't register adapter notification, overflow")) + return (0); } /* -------------------------------------------------------------------------- - IDI client does register his notification function - -------------------------------------------------------------------------- */ -static void diva_remove_adapter_callback (dword handle) { - diva_os_spin_lock_magic_t irql; - if (handle && ((--handle) < DIVA_DIDD_MAX_NOTIFICATIONS)) { - diva_os_enter_spin_lock (&didd_spin, &irql, "didd_nfy_rm"); - NotificationTable[handle].callback = NULL; - NotificationTable[handle].context = NULL; - diva_os_leave_spin_lock (&didd_spin, &irql, "didd_nfy_rm"); - DBG_TRC(("Remove adapter notification[%d]", (int)(handle+1))) - return; - } - DBG_ERR(("Can't remove adapter notification, handle=%d", handle)) -} + IDI client does register his notification function + -------------------------------------------------------------------------- */ +static void diva_remove_adapter_callback(dword handle) { + diva_os_spin_lock_magic_t irql; + if (handle && ((--handle) < DIVA_DIDD_MAX_NOTIFICATIONS)) { + diva_os_enter_spin_lock(&didd_spin, &irql, "didd_nfy_rm"); + NotificationTable[handle].callback = NULL; + NotificationTable[handle].context = NULL; + diva_os_leave_spin_lock(&didd_spin, &irql, "didd_nfy_rm"); + DBG_TRC(("Remove adapter notification[%d]", (int)(handle + 1))) + return; + } + DBG_ERR(("Can't remove adapter notification, handle=%d", handle)) + } /* -------------------------------------------------------------------------- - Notify all client about adapter array change - Does suppose following behavior in the client side: - Step 1: Redister Notification - Step 2: Read Adapter Array - -------------------------------------------------------------------------- */ -static void diva_notify_adapter_change (DESCRIPTOR* d, int removal) { - int i, do_notify; - didd_adapter_change_notification_t nfy; - diva_os_spin_lock_magic_t irql; - for (i = 0; i < DIVA_DIDD_MAX_NOTIFICATIONS; i++) { - do_notify = 0; - diva_os_enter_spin_lock (&didd_spin, &irql, "didd_nfy"); - if (NotificationTable[i].callback) { - memcpy (&nfy, &NotificationTable[i], sizeof(nfy)); - do_notify = 1; - } - diva_os_leave_spin_lock (&didd_spin, &irql, "didd_nfy"); - if (do_notify) { - (*(nfy.callback))(nfy.context, d, removal); - } - } + Notify all client about adapter array change + Does suppose following behavior in the client side: + Step 1: Redister Notification + Step 2: Read Adapter Array + -------------------------------------------------------------------------- */ +static void diva_notify_adapter_change(DESCRIPTOR *d, int removal) { + int i, do_notify; + didd_adapter_change_notification_t nfy; + diva_os_spin_lock_magic_t irql; + for (i = 0; i < DIVA_DIDD_MAX_NOTIFICATIONS; i++) { + do_notify = 0; + diva_os_enter_spin_lock(&didd_spin, &irql, "didd_nfy"); + if (NotificationTable[i].callback) { + memcpy(&nfy, &NotificationTable[i], sizeof(nfy)); + do_notify = 1; + } + diva_os_leave_spin_lock(&didd_spin, &irql, "didd_nfy"); + if (do_notify) { + (*(nfy.callback))(nfy.context, d, removal); + } + } } /* -------------------------------------------------------------------------- - For all systems, that are linked by Kernel Mode Linker this is ONLY one - function thet should be exported by this device driver - IDI clients should look for IDI_DADAPTER, and use request function - of this adapter (sync request) in order to receive appropriate services: - - add new adapter - - remove existing adapter - - add adapter array notification - - remove adapter array notification - (read adapter is redundant in this case) - INPUT: + For all systems, that are linked by Kernel Mode Linker this is ONLY one + function thet should be exported by this device driver + IDI clients should look for IDI_DADAPTER, and use request function + of this adapter (sync request) in order to receive appropriate services: + - add new adapter + - remove existing adapter + - add adapter array notification + - remove adapter array notification + (read adapter is redundant in this case) + INPUT: buffer - pointer to buffer that will receive adapter array length - length (in bytes) of space in buffer - OUTPUT: + OUTPUT: Adapter array will be written to memory described by 'buffer' If the last adapter seen in the returned adapter array is IDI_DADAPTER or if last adapter in array does have type '0', then it was enougth space in buffer to accommodate all available adapter descriptors - *NOTE 1 (debug interface): + *NOTE 1 (debug interface): The IDI adapter of type 'IDI_DIMAINT' does register as 'request' famous 'dprintf' function (of type DI_PRINTF, please look include/debuglib.c and include/debuglib.h) for details. So dprintf is not exported from module debug module directly, instead of this IDI_DIMAINT is registered. Module load order will receive in this case: - 1. DIDD (this file) - 2. DIMAINT does load and register 'IDI_DIMAINT', at this step - DIDD should be able to get 'dprintf', save it, and - register with DIDD by means of 'dprintf' function. - 3. any other driver is loaded and is able to access adapter array - and debug interface + 1. DIDD (this file) + 2. DIMAINT does load and register 'IDI_DIMAINT', at this step + DIDD should be able to get 'dprintf', save it, and + register with DIDD by means of 'dprintf' function. + 3. any other driver is loaded and is able to access adapter array + and debug interface This approach does allow to load/unload debug interface on demand, and save memory, it it is necessary. - -------------------------------------------------------------------------- */ -void IDI_CALL_LINK_T DIVA_DIDD_Read (void IDI_CALL_ENTITY_T * buffer, - int length) { - diva_didd_read_adapter_array (buffer, length); + -------------------------------------------------------------------------- */ +void IDI_CALL_LINK_T DIVA_DIDD_Read(void IDI_CALL_ENTITY_T *buffer, + int length) { + diva_didd_read_adapter_array(buffer, length); } - |