diff options
Diffstat (limited to 'drivers/isdn/hardware/eicon/um_idi.c')
| -rw-r--r-- | drivers/isdn/hardware/eicon/um_idi.c | 885 |
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 00000000..7cab5c32 --- /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 successful + */ + 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); +} |