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path: root/drivers/isdn/hardware/eicon/um_idi.c
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Diffstat (limited to 'drivers/isdn/hardware/eicon/um_idi.c')
-rw-r--r--drivers/isdn/hardware/eicon/um_idi.c885
1 files changed, 885 insertions, 0 deletions
diff --git a/drivers/isdn/hardware/eicon/um_idi.c b/drivers/isdn/hardware/eicon/um_idi.c
new file mode 100644
index 000000000000..6563db998d06
--- /dev/null
+++ b/drivers/isdn/hardware/eicon/um_idi.c
@@ -0,0 +1,885 @@
+/* $Id: um_idi.c,v 1.14 2004/03/21 17:54:37 armin Exp $ */
+
+#include "platform.h"
+#include "di_defs.h"
+#include "pc.h"
+#include "dqueue.h"
+#include "adapter.h"
+#include "entity.h"
+#include "um_xdi.h"
+#include "um_idi.h"
+#include "debuglib.h"
+#include "divasync.h"
+
+#define DIVAS_MAX_XDI_ADAPTERS 64
+
+/* --------------------------------------------------------------------------
+ IMPORTS
+ -------------------------------------------------------------------------- */
+extern void diva_os_wakeup_read(void *os_context);
+extern void diva_os_wakeup_close(void *os_context);
+/* --------------------------------------------------------------------------
+ LOCALS
+ -------------------------------------------------------------------------- */
+static LIST_HEAD(adapter_q);
+static diva_os_spin_lock_t adapter_lock;
+
+static diva_um_idi_adapter_t *diva_um_idi_find_adapter(dword nr);
+static void cleanup_adapter(diva_um_idi_adapter_t * a);
+static void cleanup_entity(divas_um_idi_entity_t * e);
+static int diva_user_mode_idi_adapter_features(diva_um_idi_adapter_t * a,
+ diva_um_idi_adapter_features_t
+ * features);
+static int process_idi_request(divas_um_idi_entity_t * e,
+ const diva_um_idi_req_hdr_t * req);
+static int process_idi_rc(divas_um_idi_entity_t * e, byte rc);
+static int process_idi_ind(divas_um_idi_entity_t * e, byte ind);
+static int write_return_code(divas_um_idi_entity_t * e, byte rc);
+
+/* --------------------------------------------------------------------------
+ MAIN
+ -------------------------------------------------------------------------- */
+int diva_user_mode_idi_init(void)
+{
+ diva_os_initialize_spin_lock(&adapter_lock, "adapter");
+ return (0);
+}
+
+/* --------------------------------------------------------------------------
+ Copy adapter features to user supplied buffer
+ -------------------------------------------------------------------------- */
+static int
+diva_user_mode_idi_adapter_features(diva_um_idi_adapter_t * a,
+ diva_um_idi_adapter_features_t *
+ features)
+{
+ IDI_SYNC_REQ sync_req;
+
+ if ((a) && (a->d.request)) {
+ features->type = a->d.type;
+ features->features = a->d.features;
+ features->channels = a->d.channels;
+ memset(features->name, 0, sizeof(features->name));
+
+ sync_req.GetName.Req = 0;
+ sync_req.GetName.Rc = IDI_SYNC_REQ_GET_NAME;
+ (*(a->d.request)) ((ENTITY *) & sync_req);
+ strlcpy(features->name, sync_req.GetName.name,
+ sizeof(features->name));
+
+ sync_req.GetSerial.Req = 0;
+ sync_req.GetSerial.Rc = IDI_SYNC_REQ_GET_SERIAL;
+ sync_req.GetSerial.serial = 0;
+ (*(a->d.request)) ((ENTITY *) & sync_req);
+ features->serial_number = sync_req.GetSerial.serial;
+ }
+
+ return ((a) ? 0 : -1);
+}
+
+/* --------------------------------------------------------------------------
+ REMOVE ADAPTER
+ -------------------------------------------------------------------------- */
+void diva_user_mode_idi_remove_adapter(int adapter_nr)
+{
+ struct list_head *tmp;
+ diva_um_idi_adapter_t *a;
+
+ list_for_each(tmp, &adapter_q) {
+ a = list_entry(tmp, diva_um_idi_adapter_t, link);
+ if (a->adapter_nr == adapter_nr) {
+ list_del(tmp);
+ cleanup_adapter(a);
+ DBG_LOG(("DIDD: del adapter(%d)", a->adapter_nr));
+ diva_os_free(0, a);
+ break;
+ }
+ }
+}
+
+/* --------------------------------------------------------------------------
+ CALLED ON DRIVER EXIT (UNLOAD)
+ -------------------------------------------------------------------------- */
+void diva_user_mode_idi_finit(void)
+{
+ struct list_head *tmp, *safe;
+ diva_um_idi_adapter_t *a;
+
+ list_for_each_safe(tmp, safe, &adapter_q) {
+ a = list_entry(tmp, diva_um_idi_adapter_t, link);
+ list_del(tmp);
+ cleanup_adapter(a);
+ DBG_LOG(("DIDD: del adapter(%d)", a->adapter_nr));
+ diva_os_free(0, a);
+ }
+ diva_os_destroy_spin_lock(&adapter_lock, "adapter");
+}
+
+/* -------------------------------------------------------------------------
+ CREATE AND INIT IDI ADAPTER
+ ------------------------------------------------------------------------- */
+int diva_user_mode_idi_create_adapter(const DESCRIPTOR * d, int adapter_nr)
+{
+ diva_os_spin_lock_magic_t old_irql;
+ diva_um_idi_adapter_t *a =
+ (diva_um_idi_adapter_t *) diva_os_malloc(0,
+ sizeof
+ (diva_um_idi_adapter_t));
+
+ if (!a) {
+ return (-1);
+ }
+ memset(a, 0x00, sizeof(*a));
+ INIT_LIST_HEAD(&a->entity_q);
+
+ a->d = *d;
+ a->adapter_nr = adapter_nr;
+
+ DBG_LOG(("DIDD_ADD A(%d), type:%02x, features:%04x, channels:%d",
+ adapter_nr, a->d.type, a->d.features, a->d.channels));
+
+ diva_os_enter_spin_lock(&adapter_lock, &old_irql, "create_adapter");
+ list_add_tail(&a->link, &adapter_q);
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "create_adapter");
+ return (0);
+}
+
+/* ------------------------------------------------------------------------
+ Find adapter by Adapter number
+ ------------------------------------------------------------------------ */
+static diva_um_idi_adapter_t *diva_um_idi_find_adapter(dword nr)
+{
+ diva_um_idi_adapter_t *a = NULL;
+ struct list_head *tmp;
+
+ list_for_each(tmp, &adapter_q) {
+ a = list_entry(tmp, diva_um_idi_adapter_t, link);
+ DBG_TRC(("find_adapter: (%d)-(%d)", nr, a->adapter_nr));
+ if (a->adapter_nr == (int)nr)
+ break;
+ a = NULL;
+ }
+ return(a);
+}
+
+/* ------------------------------------------------------------------------
+ Cleanup this adapter and cleanup/delete all entities assigned
+ to this adapter
+ ------------------------------------------------------------------------ */
+static void cleanup_adapter(diva_um_idi_adapter_t * a)
+{
+ struct list_head *tmp, *safe;
+ divas_um_idi_entity_t *e;
+
+ list_for_each_safe(tmp, safe, &a->entity_q) {
+ e = list_entry(tmp, divas_um_idi_entity_t, link);
+ list_del(tmp);
+ cleanup_entity(e);
+ if (e->os_context) {
+ diva_os_wakeup_read(e->os_context);
+ diva_os_wakeup_close(e->os_context);
+ }
+ }
+ memset(&a->d, 0x00, sizeof(DESCRIPTOR));
+}
+
+/* ------------------------------------------------------------------------
+ Cleanup, but NOT delete this entity
+ ------------------------------------------------------------------------ */
+static void cleanup_entity(divas_um_idi_entity_t * e)
+{
+ e->os_ref = NULL;
+ e->status = 0;
+ e->adapter = NULL;
+ e->e.Id = 0;
+ e->rc_count = 0;
+
+ e->status |= DIVA_UM_IDI_REMOVED;
+ e->status |= DIVA_UM_IDI_REMOVE_PENDING;
+
+ diva_data_q_finit(&e->data);
+ diva_data_q_finit(&e->rc);
+}
+
+
+/* ------------------------------------------------------------------------
+ Create ENTITY, link it to the adapter and remove pointer to entity
+ ------------------------------------------------------------------------ */
+void *divas_um_idi_create_entity(dword adapter_nr, void *file)
+{
+ divas_um_idi_entity_t *e;
+ diva_um_idi_adapter_t *a;
+ diva_os_spin_lock_magic_t old_irql;
+
+ if ((e = (divas_um_idi_entity_t *) diva_os_malloc(0, sizeof(*e)))) {
+ memset(e, 0x00, sizeof(*e));
+ if (!
+ (e->os_context =
+ diva_os_malloc(0, diva_os_get_context_size()))) {
+ DBG_LOG(("E(%08x) no memory for os context", e));
+ diva_os_free(0, e);
+ return NULL;
+ }
+ memset(e->os_context, 0x00, diva_os_get_context_size());
+
+ if ((diva_data_q_init(&e->data, 2048 + 512, 16))) {
+ diva_os_free(0, e->os_context);
+ diva_os_free(0, e);
+ return NULL;
+ }
+ if ((diva_data_q_init(&e->rc, sizeof(diva_um_idi_ind_hdr_t), 2))) {
+ diva_data_q_finit(&e->data);
+ diva_os_free(0, e->os_context);
+ diva_os_free(0, e);
+ return NULL;
+ }
+
+ diva_os_enter_spin_lock(&adapter_lock, &old_irql, "create_entity");
+ /*
+ Look for Adapter requested
+ */
+ if (!(a = diva_um_idi_find_adapter(adapter_nr))) {
+ /*
+ No adapter was found, or this adapter was removed
+ */
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "create_entity");
+
+ DBG_LOG(("A: no adapter(%ld)", adapter_nr));
+
+ cleanup_entity(e);
+ diva_os_free(0, e->os_context);
+ diva_os_free(0, e);
+
+ return NULL;
+ }
+
+ e->os_ref = file; /* link to os handle */
+ e->adapter = a; /* link to adapter */
+
+ list_add_tail(&e->link, &a->entity_q); /* link from adapter */
+
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "create_entity");
+
+ DBG_LOG(("A(%ld), create E(%08x)", adapter_nr, e));
+ }
+
+ return (e);
+}
+
+/* ------------------------------------------------------------------------
+ Unlink entity and free memory
+ ------------------------------------------------------------------------ */
+int divas_um_idi_delete_entity(int adapter_nr, void *entity)
+{
+ divas_um_idi_entity_t *e;
+ diva_um_idi_adapter_t *a;
+ diva_os_spin_lock_magic_t old_irql;
+
+ if (!(e = (divas_um_idi_entity_t *) entity))
+ return (-1);
+
+ diva_os_enter_spin_lock(&adapter_lock, &old_irql, "delete_entity");
+ if ((a = e->adapter)) {
+ list_del(&e->link);
+ }
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "delete_entity");
+
+ diva_um_idi_stop_wdog(entity);
+ cleanup_entity(e);
+ diva_os_free(0, e->os_context);
+ memset(e, 0x00, sizeof(*e));
+ diva_os_free(0, e);
+
+ DBG_LOG(("A(%d) remove E:%08x", adapter_nr, e));
+
+ return (0);
+}
+
+/* --------------------------------------------------------------------------
+ Called by application to read data from IDI
+ -------------------------------------------------------------------------- */
+int diva_um_idi_read(void *entity,
+ void *os_handle,
+ void *dst,
+ int max_length, divas_um_idi_copy_to_user_fn_t cp_fn)
+{
+ divas_um_idi_entity_t *e;
+ diva_um_idi_adapter_t *a;
+ const void *data;
+ int length, ret = 0;
+ diva_um_idi_data_queue_t *q;
+ diva_os_spin_lock_magic_t old_irql;
+
+ diva_os_enter_spin_lock(&adapter_lock, &old_irql, "read");
+
+ e = (divas_um_idi_entity_t *) entity;
+ if (!e || (!(a = e->adapter)) ||
+ (e->status & DIVA_UM_IDI_REMOVE_PENDING) ||
+ (e->status & DIVA_UM_IDI_REMOVED) ||
+ (a->status & DIVA_UM_IDI_ADAPTER_REMOVED)) {
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "read");
+ DBG_ERR(("E(%08x) read failed - adapter removed", e))
+ return (-1);
+ }
+
+ DBG_TRC(("A(%d) E(%08x) read(%d)", a->adapter_nr, e, max_length));
+
+ /*
+ Try to read return code first
+ */
+ data = diva_data_q_get_segment4read(&e->rc);
+ q = &e->rc;
+
+ /*
+ No return codes available, read indications now
+ */
+ if (!data) {
+ if (!(e->status & DIVA_UM_IDI_RC_PENDING)) {
+ DBG_TRC(("A(%d) E(%08x) read data", a->adapter_nr, e));
+ data = diva_data_q_get_segment4read(&e->data);
+ q = &e->data;
+ }
+ } else {
+ e->status &= ~DIVA_UM_IDI_RC_PENDING;
+ DBG_TRC(("A(%d) E(%08x) read rc", a->adapter_nr, e));
+ }
+
+ if (data) {
+ if ((length = diva_data_q_get_segment_length(q)) >
+ max_length) {
+ /*
+ Not enough space to read message
+ */
+ DBG_ERR(("A: A(%d) E(%08x) read small buffer",
+ a->adapter_nr, e, ret));
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql,
+ "read");
+ return (-2);
+ }
+ /*
+ Copy it to user, this function does access ONLY locked an verified
+ memory, also we can access it witch spin lock held
+ */
+
+ if ((ret = (*cp_fn) (os_handle, dst, data, length)) >= 0) {
+ /*
+ Acknowledge only if read was successfull
+ */
+ diva_data_q_ack_segment4read(q);
+ }
+ }
+
+
+ DBG_TRC(("A(%d) E(%08x) read=%d", a->adapter_nr, e, ret));
+
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "read");
+
+ return (ret);
+}
+
+
+int diva_um_idi_write(void *entity,
+ void *os_handle,
+ const void *src,
+ int length, divas_um_idi_copy_from_user_fn_t cp_fn)
+{
+ divas_um_idi_entity_t *e;
+ diva_um_idi_adapter_t *a;
+ diva_um_idi_req_hdr_t *req;
+ void *data;
+ int ret = 0;
+ diva_os_spin_lock_magic_t old_irql;
+
+ diva_os_enter_spin_lock(&adapter_lock, &old_irql, "write");
+
+ e = (divas_um_idi_entity_t *) entity;
+ if (!e || (!(a = e->adapter)) ||
+ (e->status & DIVA_UM_IDI_REMOVE_PENDING) ||
+ (e->status & DIVA_UM_IDI_REMOVED) ||
+ (a->status & DIVA_UM_IDI_ADAPTER_REMOVED)) {
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "write");
+ DBG_ERR(("E(%08x) write failed - adapter removed", e))
+ return (-1);
+ }
+
+ DBG_TRC(("A(%d) E(%08x) write(%d)", a->adapter_nr, e, length));
+
+ if ((length < sizeof(*req)) || (length > sizeof(e->buffer))) {
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "write");
+ return (-2);
+ }
+
+ if (e->status & DIVA_UM_IDI_RC_PENDING) {
+ DBG_ERR(("A: A(%d) E(%08x) rc pending", a->adapter_nr, e));
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "write");
+ return (-1); /* should wait for RC code first */
+ }
+
+ /*
+ Copy function does access only locked verified memory,
+ also it can be called with spin lock held
+ */
+ if ((ret = (*cp_fn) (os_handle, e->buffer, src, length)) < 0) {
+ DBG_TRC(("A: A(%d) E(%08x) write error=%d", a->adapter_nr,
+ e, ret));
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "write");
+ return (ret);
+ }
+
+ req = (diva_um_idi_req_hdr_t *) & e->buffer[0];
+
+ switch (req->type) {
+ case DIVA_UM_IDI_GET_FEATURES:{
+ DBG_LOG(("A(%d) get_features", a->adapter_nr));
+ if (!(data =
+ diva_data_q_get_segment4write(&e->data))) {
+ DBG_ERR(("A(%d) get_features, no free buffer",
+ a->adapter_nr));
+ diva_os_leave_spin_lock(&adapter_lock,
+ &old_irql,
+ "write");
+ return (0);
+ }
+ diva_user_mode_idi_adapter_features(a, &(((diva_um_idi_ind_hdr_t
+ *) data)->hdr.features));
+ ((diva_um_idi_ind_hdr_t *) data)->type =
+ DIVA_UM_IDI_IND_FEATURES;
+ ((diva_um_idi_ind_hdr_t *) data)->data_length = 0;
+ diva_data_q_ack_segment4write(&e->data,
+ sizeof(diva_um_idi_ind_hdr_t));
+
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "write");
+
+ diva_os_wakeup_read(e->os_context);
+ }
+ break;
+
+ case DIVA_UM_IDI_REQ:
+ case DIVA_UM_IDI_REQ_MAN:
+ case DIVA_UM_IDI_REQ_SIG:
+ case DIVA_UM_IDI_REQ_NET:
+ DBG_TRC(("A(%d) REQ(%02d)-(%02d)-(%08x)", a->adapter_nr,
+ req->Req, req->ReqCh,
+ req->type & DIVA_UM_IDI_REQ_TYPE_MASK));
+ switch (process_idi_request(e, req)) {
+ case -1:
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "write");
+ return (-1);
+ case -2:
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "write");
+ diva_os_wakeup_read(e->os_context);
+ break;
+ default:
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "write");
+ break;
+ }
+ break;
+
+ default:
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "write");
+ return (-1);
+ }
+
+ DBG_TRC(("A(%d) E(%08x) write=%d", a->adapter_nr, e, ret));
+
+ return (ret);
+}
+
+/* --------------------------------------------------------------------------
+ CALLBACK FROM XDI
+ -------------------------------------------------------------------------- */
+static void diva_um_idi_xdi_callback(ENTITY * entity)
+{
+ divas_um_idi_entity_t *e = DIVAS_CONTAINING_RECORD(entity,
+ divas_um_idi_entity_t,
+ e);
+ diva_os_spin_lock_magic_t old_irql;
+ int call_wakeup = 0;
+
+ diva_os_enter_spin_lock(&adapter_lock, &old_irql, "xdi_callback");
+
+ if (e->e.complete == 255) {
+ if (!(e->status & DIVA_UM_IDI_REMOVE_PENDING)) {
+ diva_um_idi_stop_wdog(e);
+ }
+ if ((call_wakeup = process_idi_rc(e, e->e.Rc))) {
+ if (e->rc_count) {
+ e->rc_count--;
+ }
+ }
+ e->e.Rc = 0;
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "xdi_callback");
+
+ if (call_wakeup) {
+ diva_os_wakeup_read(e->os_context);
+ diva_os_wakeup_close(e->os_context);
+ }
+ } else {
+ if (e->status & DIVA_UM_IDI_REMOVE_PENDING) {
+ e->e.RNum = 0;
+ e->e.RNR = 2;
+ } else {
+ call_wakeup = process_idi_ind(e, e->e.Ind);
+ }
+ e->e.Ind = 0;
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "xdi_callback");
+ if (call_wakeup) {
+ diva_os_wakeup_read(e->os_context);
+ }
+ }
+}
+
+static int process_idi_request(divas_um_idi_entity_t * e,
+ const diva_um_idi_req_hdr_t * req)
+{
+ int assign = 0;
+ byte Req = (byte) req->Req;
+ dword type = req->type & DIVA_UM_IDI_REQ_TYPE_MASK;
+
+ if (!e->e.Id || !e->e.callback) { /* not assigned */
+ if (Req != ASSIGN) {
+ DBG_ERR(("A: A(%d) E(%08x) not assigned",
+ e->adapter->adapter_nr, e));
+ return (-1); /* NOT ASSIGNED */
+ } else {
+ switch (type) {
+ case DIVA_UM_IDI_REQ_TYPE_MAN:
+ e->e.Id = MAN_ID;
+ DBG_TRC(("A(%d) E(%08x) assign MAN",
+ e->adapter->adapter_nr, e));
+ break;
+
+ case DIVA_UM_IDI_REQ_TYPE_SIG:
+ e->e.Id = DSIG_ID;
+ DBG_TRC(("A(%d) E(%08x) assign SIG",
+ e->adapter->adapter_nr, e));
+ break;
+
+ case DIVA_UM_IDI_REQ_TYPE_NET:
+ e->e.Id = NL_ID;
+ DBG_TRC(("A(%d) E(%08x) assign NET",
+ e->adapter->adapter_nr, e));
+ break;
+
+ default:
+ DBG_ERR(("A: A(%d) E(%08x) unknown type=%08x",
+ e->adapter->adapter_nr, e,
+ type));
+ return (-1);
+ }
+ }
+ e->e.XNum = 1;
+ e->e.RNum = 1;
+ e->e.callback = diva_um_idi_xdi_callback;
+ e->e.X = &e->XData;
+ e->e.R = &e->RData;
+ assign = 1;
+ }
+ e->status |= DIVA_UM_IDI_RC_PENDING;
+ e->e.Req = Req;
+ e->e.ReqCh = (byte) req->ReqCh;
+ e->e.X->PLength = (word) req->data_length;
+ e->e.X->P = (byte *) & req[1]; /* Our buffer is safe */
+
+ DBG_TRC(("A(%d) E(%08x) request(%02x-%02x-%02x (%d))",
+ e->adapter->adapter_nr, e, e->e.Id, e->e.Req,
+ e->e.ReqCh, e->e.X->PLength));
+
+ e->rc_count++;
+
+ if (e->adapter && e->adapter->d.request) {
+ diva_um_idi_start_wdog(e);
+ (*(e->adapter->d.request)) (&e->e);
+ }
+
+ if (assign) {
+ if (e->e.Rc == OUT_OF_RESOURCES) {
+ /*
+ XDI has no entities more, call was not forwarded to the card,
+ no callback will be scheduled
+ */
+ DBG_ERR(("A: A(%d) E(%08x) XDI out of entities",
+ e->adapter->adapter_nr, e));
+
+ e->e.Id = 0;
+ e->e.ReqCh = 0;
+ e->e.RcCh = 0;
+ e->e.Ind = 0;
+ e->e.IndCh = 0;
+ e->e.XNum = 0;
+ e->e.RNum = 0;
+ e->e.callback = NULL;
+ e->e.X = NULL;
+ e->e.R = NULL;
+ write_return_code(e, ASSIGN_RC | OUT_OF_RESOURCES);
+ return (-2);
+ } else {
+ e->status |= DIVA_UM_IDI_ASSIGN_PENDING;
+ }
+ }
+
+ return (0);
+}
+
+static int process_idi_rc(divas_um_idi_entity_t * e, byte rc)
+{
+ DBG_TRC(("A(%d) E(%08x) rc(%02x-%02x-%02x)",
+ e->adapter->adapter_nr, e, e->e.Id, rc, e->e.RcCh));
+
+ if (e->status & DIVA_UM_IDI_ASSIGN_PENDING) {
+ e->status &= ~DIVA_UM_IDI_ASSIGN_PENDING;
+ if (rc != ASSIGN_OK) {
+ DBG_ERR(("A: A(%d) E(%08x) ASSIGN failed",
+ e->adapter->adapter_nr, e));
+ e->e.callback = NULL;
+ e->e.Id = 0;
+ e->e.Req = 0;
+ e->e.ReqCh = 0;
+ e->e.Rc = 0;
+ e->e.RcCh = 0;
+ e->e.Ind = 0;
+ e->e.IndCh = 0;
+ e->e.X = NULL;
+ e->e.R = NULL;
+ e->e.XNum = 0;
+ e->e.RNum = 0;
+ }
+ }
+ if ((e->e.Req == REMOVE) && e->e.Id && (rc == 0xff)) {
+ DBG_ERR(("A: A(%d) E(%08x) discard OK in REMOVE",
+ e->adapter->adapter_nr, e));
+ return (0); /* let us do it in the driver */
+ }
+ if ((e->e.Req == REMOVE) && (!e->e.Id)) { /* REMOVE COMPLETE */
+ e->e.callback = NULL;
+ e->e.Id = 0;
+ e->e.Req = 0;
+ e->e.ReqCh = 0;
+ e->e.Rc = 0;
+ e->e.RcCh = 0;
+ e->e.Ind = 0;
+ e->e.IndCh = 0;
+ e->e.X = NULL;
+ e->e.R = NULL;
+ e->e.XNum = 0;
+ e->e.RNum = 0;
+ e->rc_count = 0;
+ }
+ if ((e->e.Req == REMOVE) && (rc != 0xff)) { /* REMOVE FAILED */
+ DBG_ERR(("A: A(%d) E(%08x) REMOVE FAILED",
+ e->adapter->adapter_nr, e));
+ }
+ write_return_code(e, rc);
+
+ return (1);
+}
+
+static int process_idi_ind(divas_um_idi_entity_t * e, byte ind)
+{
+ int do_wakeup = 0;
+
+ if (e->e.complete != 0x02) {
+ diva_um_idi_ind_hdr_t *pind =
+ (diva_um_idi_ind_hdr_t *)
+ diva_data_q_get_segment4write(&e->data);
+ if (pind) {
+ e->e.RNum = 1;
+ e->e.R->P = (byte *) & pind[1];
+ e->e.R->PLength =
+ (word) (diva_data_q_get_max_length(&e->data) -
+ sizeof(*pind));
+ DBG_TRC(("A(%d) E(%08x) ind_1(%02x-%02x-%02x)-[%d-%d]",
+ e->adapter->adapter_nr, e, e->e.Id, ind,
+ e->e.IndCh, e->e.RLength,
+ e->e.R->PLength));
+
+ } else {
+ DBG_TRC(("A(%d) E(%08x) ind(%02x-%02x-%02x)-RNR",
+ e->adapter->adapter_nr, e, e->e.Id, ind,
+ e->e.IndCh));
+ e->e.RNum = 0;
+ e->e.RNR = 1;
+ do_wakeup = 1;
+ }
+ } else {
+ diva_um_idi_ind_hdr_t *pind =
+ (diva_um_idi_ind_hdr_t *) (e->e.R->P);
+
+ DBG_TRC(("A(%d) E(%08x) ind(%02x-%02x-%02x)-[%d]",
+ e->adapter->adapter_nr, e, e->e.Id, ind,
+ e->e.IndCh, e->e.R->PLength));
+
+ pind--;
+ pind->type = DIVA_UM_IDI_IND;
+ pind->hdr.ind.Ind = ind;
+ pind->hdr.ind.IndCh = e->e.IndCh;
+ pind->data_length = e->e.R->PLength;
+ diva_data_q_ack_segment4write(&e->data,
+ (int) (sizeof(*pind) +
+ e->e.R->PLength));
+ do_wakeup = 1;
+ }
+
+ if ((e->status & DIVA_UM_IDI_RC_PENDING) && !e->rc.count) {
+ do_wakeup = 0;
+ }
+
+ return (do_wakeup);
+}
+
+/* --------------------------------------------------------------------------
+ Write return code to the return code queue of entity
+ -------------------------------------------------------------------------- */
+static int write_return_code(divas_um_idi_entity_t * e, byte rc)
+{
+ diva_um_idi_ind_hdr_t *prc;
+
+ if (!(prc =
+ (diva_um_idi_ind_hdr_t *) diva_data_q_get_segment4write(&e->rc)))
+ {
+ DBG_ERR(("A: A(%d) E(%08x) rc(%02x) lost",
+ e->adapter->adapter_nr, e, rc));
+ e->status &= ~DIVA_UM_IDI_RC_PENDING;
+ return (-1);
+ }
+
+ prc->type = DIVA_UM_IDI_IND_RC;
+ prc->hdr.rc.Rc = rc;
+ prc->hdr.rc.RcCh = e->e.RcCh;
+ prc->data_length = 0;
+ diva_data_q_ack_segment4write(&e->rc, sizeof(*prc));
+
+ return (0);
+}
+
+/* --------------------------------------------------------------------------
+ Return amount of entries that can be bead from this entity or
+ -1 if adapter was removed
+ -------------------------------------------------------------------------- */
+int diva_user_mode_idi_ind_ready(void *entity, void *os_handle)
+{
+ divas_um_idi_entity_t *e;
+ diva_um_idi_adapter_t *a;
+ diva_os_spin_lock_magic_t old_irql;
+ int ret;
+
+ if (!entity)
+ return (-1);
+ diva_os_enter_spin_lock(&adapter_lock, &old_irql, "ind_ready");
+ e = (divas_um_idi_entity_t *) entity;
+ a = e->adapter;
+
+ if ((!a) || (a->status & DIVA_UM_IDI_ADAPTER_REMOVED)) {
+ /*
+ Adapter was unloaded
+ */
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "ind_ready");
+ return (-1); /* adapter was removed */
+ }
+ if (e->status & DIVA_UM_IDI_REMOVED) {
+ /*
+ entity was removed as result of adapter removal
+ user should assign this entity again
+ */
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "ind_ready");
+ return (-1);
+ }
+
+ ret = e->rc.count + e->data.count;
+
+ if ((e->status & DIVA_UM_IDI_RC_PENDING) && !e->rc.count) {
+ ret = 0;
+ }
+
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "ind_ready");
+
+ return (ret);
+}
+
+void *diva_um_id_get_os_context(void *entity)
+{
+ return (((divas_um_idi_entity_t *) entity)->os_context);
+}
+
+int divas_um_idi_entity_assigned(void *entity)
+{
+ divas_um_idi_entity_t *e;
+ diva_um_idi_adapter_t *a;
+ int ret;
+ diva_os_spin_lock_magic_t old_irql;
+
+ diva_os_enter_spin_lock(&adapter_lock, &old_irql, "assigned?");
+
+
+ e = (divas_um_idi_entity_t *) entity;
+ if (!e || (!(a = e->adapter)) ||
+ (e->status & DIVA_UM_IDI_REMOVED) ||
+ (a->status & DIVA_UM_IDI_ADAPTER_REMOVED)) {
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "assigned?");
+ return (0);
+ }
+
+ e->status |= DIVA_UM_IDI_REMOVE_PENDING;
+
+ ret = (e->e.Id || e->rc_count
+ || (e->status & DIVA_UM_IDI_ASSIGN_PENDING));
+
+ DBG_TRC(("Id:%02x, rc_count:%d, status:%08x", e->e.Id, e->rc_count,
+ e->status))
+
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "assigned?");
+
+ return (ret);
+}
+
+int divas_um_idi_entity_start_remove(void *entity)
+{
+ divas_um_idi_entity_t *e;
+ diva_um_idi_adapter_t *a;
+ diva_os_spin_lock_magic_t old_irql;
+
+ diva_os_enter_spin_lock(&adapter_lock, &old_irql, "start_remove");
+
+ e = (divas_um_idi_entity_t *) entity;
+ if (!e || (!(a = e->adapter)) ||
+ (e->status & DIVA_UM_IDI_REMOVED) ||
+ (a->status & DIVA_UM_IDI_ADAPTER_REMOVED)) {
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "start_remove");
+ return (0);
+ }
+
+ if (e->rc_count) {
+ /*
+ Entity BUSY
+ */
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "start_remove");
+ return (1);
+ }
+
+ if (!e->e.Id) {
+ /*
+ Remove request was already pending, and arrived now
+ */
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "start_remove");
+ return (0); /* REMOVE was pending */
+ }
+
+ /*
+ Now send remove request
+ */
+ e->e.Req = REMOVE;
+ e->e.ReqCh = 0;
+
+ e->rc_count++;
+
+ DBG_TRC(("A(%d) E(%08x) request(%02x-%02x-%02x (%d))",
+ e->adapter->adapter_nr, e, e->e.Id, e->e.Req,
+ e->e.ReqCh, e->e.X->PLength));
+
+ if (a->d.request)
+ (*(a->d.request)) (&e->e);
+
+ diva_os_leave_spin_lock(&adapter_lock, &old_irql, "start_remove");
+
+ return (0);
+}