Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 852 insertions, 0 deletions

diff --git a/drivers/isdn/hardware/eicon/io.c b/drivers/isdn/hardware/eicon/io.c
new file mode 100644
index 000000000..8851ce580
--- /dev/null
+++ b/drivers/isdn/hardware/eicon/io.c
@@ -0,0 +1,852 @@
+
+/*
+ *
+ Copyright (c) Eicon Networks, 2002.
+ *
+ This source file is supplied for the use with
+ Eicon Networks range of DIVA Server Adapters.
+ *
+ 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 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.
+ *
+ */
+#include "platform.h"
+#include "di_defs.h"
+#include "pc.h"
+#include "pr_pc.h"
+#include "divasync.h"
+#define MIPS_SCOM
+#include "pkmaint.h" /* pc_main.h, packed in os-dependent fashion */
+#include "di.h"
+#include "mi_pc.h"
+#include "io.h"
+extern ADAPTER *adapter[MAX_ADAPTER];
+extern PISDN_ADAPTER IoAdapters[MAX_ADAPTER];
+void request(PISDN_ADAPTER, ENTITY *);
+static void pcm_req(PISDN_ADAPTER, ENTITY *);
+/* --------------------------------------------------------------------------
+   local functions
+   -------------------------------------------------------------------------- */
+#define ReqFunc(N)							\
+	static void Request##N(ENTITY *e)				\
+	{ if (IoAdapters[N]) (*IoAdapters[N]->DIRequest)(IoAdapters[N], e); }
+ReqFunc(0)
+ReqFunc(1)
+ReqFunc(2)
+ReqFunc(3)
+ReqFunc(4)
+ReqFunc(5)
+ReqFunc(6)
+ReqFunc(7)
+ReqFunc(8)
+ReqFunc(9)
+ReqFunc(10)
+ReqFunc(11)
+ReqFunc(12)
+ReqFunc(13)
+ReqFunc(14)
+ReqFunc(15)
+IDI_CALL Requests[MAX_ADAPTER] =
+{ &Request0, &Request1, &Request2, &Request3,
+  &Request4, &Request5, &Request6, &Request7,
+  &Request8, &Request9, &Request10, &Request11,
+  &Request12, &Request13, &Request14, &Request15
+};
+/*****************************************************************************/
+/*
+  This array should indicate all new services, that this version of XDI
+  is able to provide to his clients
+*/
+static byte extended_xdi_features[DIVA_XDI_EXTENDED_FEATURES_MAX_SZ + 1] = {
+	(DIVA_XDI_EXTENDED_FEATURES_VALID       |
+	 DIVA_XDI_EXTENDED_FEATURE_SDRAM_BAR    |
+	 DIVA_XDI_EXTENDED_FEATURE_CAPI_PRMS    |
+#if defined(DIVA_IDI_RX_DMA)
+	 DIVA_XDI_EXTENDED_FEATURE_CMA          |
+	 DIVA_XDI_EXTENDED_FEATURE_RX_DMA       |
+	 DIVA_XDI_EXTENDED_FEATURE_MANAGEMENT_DMA |
+#endif
+	 DIVA_XDI_EXTENDED_FEATURE_NO_CANCEL_RC),
+	0
+};
+/*****************************************************************************/
+void
+dump_xlog_buffer(PISDN_ADAPTER IoAdapter, Xdesc *xlogDesc)
+{
+	dword   logLen;
+	word *Xlog   = xlogDesc->buf;
+	word  logCnt = xlogDesc->cnt;
+	word  logOut = xlogDesc->out / sizeof(*Xlog);
+	DBG_FTL(("%s: ************* XLOG recovery (%d) *************",
+		 &IoAdapter->Name[0], (int)logCnt))
+		DBG_FTL(("Microcode: %s", &IoAdapter->ProtocolIdString[0]))
+		for (; logCnt > 0; --logCnt)
+		{
+			if (!GET_WORD(&Xlog[logOut]))
+			{
+				if (--logCnt == 0)
+					break;
+				logOut = 0;
+			}
+			if (GET_WORD(&Xlog[logOut]) <= (logOut * sizeof(*Xlog)))
+			{
+				if (logCnt > 2)
+				{
+					DBG_FTL(("Possibly corrupted XLOG: %d entries left",
+						 (int)logCnt))
+						}
+				break;
+			}
+			logLen = (dword)(GET_WORD(&Xlog[logOut]) - (logOut * sizeof(*Xlog)));
+			DBG_FTL_MXLOG(((char *)&Xlog[logOut + 1], (dword)(logLen - 2)))
+				logOut = (GET_WORD(&Xlog[logOut]) + 1) / sizeof(*Xlog);
+		}
+	DBG_FTL(("%s: ***************** end of XLOG *****************",
+		 &IoAdapter->Name[0]))
+		}
+/*****************************************************************************/
+#if defined(XDI_USE_XLOG)
+static char *(ExceptionCauseTable[]) =
+{
+	"Interrupt",
+	"TLB mod /IBOUND",
+	"TLB load /DBOUND",
+	"TLB store",
+	"Address error load",
+	"Address error store",
+	"Instruction load bus error",
+	"Data load/store bus error",
+	"Syscall",
+	"Breakpoint",
+	"Reverd instruction",
+	"Coprocessor unusable",
+	"Overflow",
+	"TRAP",
+	"VCEI",
+	"Floating Point Exception",
+	"CP2",
+	"Reserved 17",
+	"Reserved 18",
+	"Reserved 19",
+	"Reserved 20",
+	"Reserved 21",
+	"Reserved 22",
+	"WATCH",
+	"Reserved 24",
+	"Reserved 25",
+	"Reserved 26",
+	"Reserved 27",
+	"Reserved 28",
+	"Reserved 29",
+	"Reserved 30",
+	"VCED"
+};
+#endif
+void
+dump_trap_frame(PISDN_ADAPTER IoAdapter, byte __iomem *exceptionFrame)
+{
+	MP_XCPTC __iomem *xcept = (MP_XCPTC __iomem *)exceptionFrame;
+	dword    __iomem *regs;
+	regs  = &xcept->regs[0];
+	DBG_FTL(("%s: ***************** CPU TRAPPED *****************",
+		 &IoAdapter->Name[0]))
+		DBG_FTL(("Microcode: %s", &IoAdapter->ProtocolIdString[0]))
+		DBG_FTL(("Cause: %s",
+			 ExceptionCauseTable[(READ_DWORD(&xcept->cr) & 0x0000007c) >> 2]))
+		DBG_FTL(("sr    0x%08x cr    0x%08x epc   0x%08x vaddr 0x%08x",
+			 READ_DWORD(&xcept->sr), READ_DWORD(&xcept->cr),
+			 READ_DWORD(&xcept->epc), READ_DWORD(&xcept->vaddr)))
+		DBG_FTL(("zero  0x%08x at    0x%08x v0    0x%08x v1    0x%08x",
+			 READ_DWORD(&regs[0]), READ_DWORD(&regs[1]),
+			 READ_DWORD(&regs[2]), READ_DWORD(&regs[3])))
+		DBG_FTL(("a0    0x%08x a1    0x%08x a2    0x%08x a3    0x%08x",
+			 READ_DWORD(&regs[4]), READ_DWORD(&regs[5]),
+			 READ_DWORD(&regs[6]), READ_DWORD(&regs[7])))
+		DBG_FTL(("t0    0x%08x t1    0x%08x t2    0x%08x t3    0x%08x",
+			 READ_DWORD(&regs[8]), READ_DWORD(&regs[9]),
+			 READ_DWORD(&regs[10]), READ_DWORD(&regs[11])))
+		DBG_FTL(("t4    0x%08x t5    0x%08x t6    0x%08x t7    0x%08x",
+			 READ_DWORD(&regs[12]), READ_DWORD(&regs[13]),
+			 READ_DWORD(&regs[14]), READ_DWORD(&regs[15])))
+		DBG_FTL(("s0    0x%08x s1    0x%08x s2    0x%08x s3    0x%08x",
+			 READ_DWORD(&regs[16]), READ_DWORD(&regs[17]),
+			 READ_DWORD(&regs[18]), READ_DWORD(&regs[19])))
+		DBG_FTL(("s4    0x%08x s5    0x%08x s6    0x%08x s7    0x%08x",
+			 READ_DWORD(&regs[20]), READ_DWORD(&regs[21]),
+			 READ_DWORD(&regs[22]), READ_DWORD(&regs[23])))
+		DBG_FTL(("t8    0x%08x t9    0x%08x k0    0x%08x k1    0x%08x",
+			 READ_DWORD(&regs[24]), READ_DWORD(&regs[25]),
+			 READ_DWORD(&regs[26]), READ_DWORD(&regs[27])))
+		DBG_FTL(("gp    0x%08x sp    0x%08x s8    0x%08x ra    0x%08x",
+			 READ_DWORD(&regs[28]), READ_DWORD(&regs[29]),
+			 READ_DWORD(&regs[30]), READ_DWORD(&regs[31])))
+		DBG_FTL(("md    0x%08x|%08x         resvd 0x%08x class 0x%08x",
+			 READ_DWORD(&xcept->mdhi), READ_DWORD(&xcept->mdlo),
+			 READ_DWORD(&xcept->reseverd), READ_DWORD(&xcept->xclass)))
+		}
+/* --------------------------------------------------------------------------
+   Real XDI Request function
+   -------------------------------------------------------------------------- */
+void request(PISDN_ADAPTER IoAdapter, ENTITY *e)
+{
+	byte i;
+	diva_os_spin_lock_magic_t irql;
+/*
+ * if the Req field in the entity structure is 0,
+ * we treat this request as a special function call
+ */
+	if (!e->Req)
+	{
+		IDI_SYNC_REQ *syncReq = (IDI_SYNC_REQ *)e;
+		switch (e->Rc)
+		{
+#if defined(DIVA_IDI_RX_DMA)
+		case IDI_SYNC_REQ_DMA_DESCRIPTOR_OPERATION: {
+			diva_xdi_dma_descriptor_operation_t *pI = \
+				&syncReq->xdi_dma_descriptor_operation.info;
+			if (!IoAdapter->dma_map) {
+				pI->operation         = -1;
+				pI->descriptor_number = -1;
+				return;
+			}
+			diva_os_enter_spin_lock(&IoAdapter->data_spin_lock, &irql, "dma_op");
+			if (pI->operation == IDI_SYNC_REQ_DMA_DESCRIPTOR_ALLOC) {
+				pI->descriptor_number = diva_alloc_dma_map_entry(\
+					(struct _diva_dma_map_entry *)IoAdapter->dma_map);
+				if (pI->descriptor_number >= 0) {
+					dword dma_magic;
+					void *local_addr;
+					diva_get_dma_map_entry(\
+						(struct _diva_dma_map_entry *)IoAdapter->dma_map,
+						pI->descriptor_number,
+						&local_addr, &dma_magic);
+					pI->descriptor_address  = local_addr;
+					pI->descriptor_magic    = dma_magic;
+					pI->operation           = 0;
+				} else {
+					pI->operation           = -1;
+				}
+			} else if ((pI->operation == IDI_SYNC_REQ_DMA_DESCRIPTOR_FREE) &&
+				   (pI->descriptor_number >= 0)) {
+				diva_free_dma_map_entry((struct _diva_dma_map_entry *)IoAdapter->dma_map,
+							pI->descriptor_number);
+				pI->descriptor_number = -1;
+				pI->operation         = 0;
+			} else {
+				pI->descriptor_number = -1;
+				pI->operation         = -1;
+			}
+			diva_os_leave_spin_lock(&IoAdapter->data_spin_lock, &irql, "dma_op");
+		} return;
+#endif
+		case IDI_SYNC_REQ_XDI_GET_LOGICAL_ADAPTER_NUMBER: {
+			diva_xdi_get_logical_adapter_number_s_t *pI = \
+				&syncReq->xdi_logical_adapter_number.info;
+			pI->logical_adapter_number = IoAdapter->ANum;
+			pI->controller = IoAdapter->ControllerNumber;
+			pI->total_controllers = IoAdapter->Properties.Adapters;
+		} return;
+		case IDI_SYNC_REQ_XDI_GET_CAPI_PARAMS: {
+			diva_xdi_get_capi_parameters_t prms, *pI = &syncReq->xdi_capi_prms.info;
+			memset(&prms, 0x00, sizeof(prms));
+			prms.structure_length = min_t(size_t, sizeof(prms), pI->structure_length);
+			memset(pI, 0x00, pI->structure_length);
+			prms.flag_dynamic_l1_down    = (IoAdapter->capi_cfg.cfg_1 & \
+							DIVA_XDI_CAPI_CFG_1_DYNAMIC_L1_ON) ? 1 : 0;
+			prms.group_optimization_enabled = (IoAdapter->capi_cfg.cfg_1 & \
+							   DIVA_XDI_CAPI_CFG_1_GROUP_POPTIMIZATION_ON) ? 1 : 0;
+			memcpy(pI, &prms, prms.structure_length);
+		} return;
+		case IDI_SYNC_REQ_XDI_GET_ADAPTER_SDRAM_BAR:
+			syncReq->xdi_sdram_bar.info.bar = IoAdapter->sdram_bar;
+			return;
+		case IDI_SYNC_REQ_XDI_GET_EXTENDED_FEATURES: {
+			dword i;
+			diva_xdi_get_extended_xdi_features_t *pI =\
+				&syncReq->xdi_extended_features.info;
+			pI->buffer_length_in_bytes &= ~0x80000000;
+			if (pI->buffer_length_in_bytes && pI->features) {
+				memset(pI->features, 0x00, pI->buffer_length_in_bytes);
+			}
+			for (i = 0; ((pI->features) && (i < pI->buffer_length_in_bytes) &&
+				     (i < DIVA_XDI_EXTENDED_FEATURES_MAX_SZ)); i++) {
+				pI->features[i] = extended_xdi_features[i];
+			}
+			if ((pI->buffer_length_in_bytes < DIVA_XDI_EXTENDED_FEATURES_MAX_SZ) ||
+			    (!pI->features)) {
+				pI->buffer_length_in_bytes =\
+					(0x80000000 | DIVA_XDI_EXTENDED_FEATURES_MAX_SZ);
+			}
+		} return;
+		case IDI_SYNC_REQ_XDI_GET_STREAM:
+			if (IoAdapter) {
+				diva_xdi_provide_istream_info(&IoAdapter->a,
+							      &syncReq->xdi_stream_info.info);
+			} else {
+				syncReq->xdi_stream_info.info.provided_service = 0;
+			}
+			return;
+		case IDI_SYNC_REQ_GET_NAME:
+			if (IoAdapter)
+			{
+				strcpy(&syncReq->GetName.name[0], IoAdapter->Name);
+				DBG_TRC(("xdi: Adapter %d / Name '%s'",
+					 IoAdapter->ANum, IoAdapter->Name))
+					return;
+			}
+			syncReq->GetName.name[0] = '\0';
+			break;
+		case IDI_SYNC_REQ_GET_SERIAL:
+			if (IoAdapter)
+			{
+				syncReq->GetSerial.serial = IoAdapter->serialNo;
+				DBG_TRC(("xdi: Adapter %d / SerialNo %ld",
+					 IoAdapter->ANum, IoAdapter->serialNo))
+					return;
+			}
+			syncReq->GetSerial.serial = 0;
+			break;
+		case IDI_SYNC_REQ_GET_CARDTYPE:
+			if (IoAdapter)
+			{
+				syncReq->GetCardType.cardtype = IoAdapter->cardType;
+				DBG_TRC(("xdi: Adapter %d / CardType %ld",
+					 IoAdapter->ANum, IoAdapter->cardType))
+					return;
+			}
+			syncReq->GetCardType.cardtype = 0;
+			break;
+		case IDI_SYNC_REQ_GET_XLOG:
+			if (IoAdapter)
+			{
+				pcm_req(IoAdapter, e);
+				return;
+			}
+			e->Ind = 0;
+			break;
+		case IDI_SYNC_REQ_GET_DBG_XLOG:
+			if (IoAdapter)
+			{
+				pcm_req(IoAdapter, e);
+				return;
+			}
+			e->Ind = 0;
+			break;
+		case IDI_SYNC_REQ_GET_FEATURES:
+			if (IoAdapter)
+			{
+				syncReq->GetFeatures.features =
+					(unsigned short)IoAdapter->features;
+				return;
+			}
+			syncReq->GetFeatures.features = 0;
+			break;
+		case IDI_SYNC_REQ_PORTDRV_HOOK:
+			if (IoAdapter)
+			{
+				DBG_TRC(("Xdi:IDI_SYNC_REQ_PORTDRV_HOOK - ignored"))
+					return;
+			}
+			break;
+		}
+		if (IoAdapter)
+		{
+			return;
+		}
+	}
+	DBG_TRC(("xdi: Id 0x%x / Req 0x%x / Rc 0x%x", e->Id, e->Req, e->Rc))
+		if (!IoAdapter)
+		{
+			DBG_FTL(("xdi: uninitialized Adapter used - ignore request"))
+				return;
+		}
+	diva_os_enter_spin_lock(&IoAdapter->data_spin_lock, &irql, "data_req");
+/*
+ * assign an entity
+ */
+	if (!(e->Id & 0x1f))
+	{
+		if (IoAdapter->e_count >= IoAdapter->e_max)
+		{
+			DBG_FTL(("xdi: all Ids in use (max=%d) --> Req ignored",
+				 IoAdapter->e_max))
+				diva_os_leave_spin_lock(&IoAdapter->data_spin_lock, &irql, "data_req");
+			return;
+		}
+/*
+ * find a new free id
+ */
+		for (i = 1; IoAdapter->e_tbl[i].e; ++i);
+		IoAdapter->e_tbl[i].e = e;
+		IoAdapter->e_count++;
+		e->No = (byte)i;
+		e->More = 0;
+		e->RCurrent = 0xff;
+	}
+	else
+	{
+		i = e->No;
+	}
+/*
+ * if the entity is still busy, ignore the request call
+ */
+	if (e->More & XBUSY)
+	{
+		DBG_FTL(("xdi: Id 0x%x busy --> Req 0x%x ignored", e->Id, e->Req))
+			if (!IoAdapter->trapped && IoAdapter->trapFnc)
+			{
+				IoAdapter->trapFnc(IoAdapter);
+				/*
+				  Firs trap, also notify user if supported
+				*/
+				if (IoAdapter->trapped && IoAdapter->os_trap_nfy_Fnc) {
+					(*(IoAdapter->os_trap_nfy_Fnc))(IoAdapter, IoAdapter->ANum);
+				}
+			}
+		diva_os_leave_spin_lock(&IoAdapter->data_spin_lock, &irql, "data_req");
+		return;
+	}
+/*
+ * initialize transmit status variables
+ */
+	e->More |= XBUSY;
+	e->More &= ~XMOREF;
+	e->XCurrent = 0;
+	e->XOffset = 0;
+/*
+ * queue this entity in the adapter request queue
+ */
+	IoAdapter->e_tbl[i].next = 0;
+	if (IoAdapter->head)
+	{
+		IoAdapter->e_tbl[IoAdapter->tail].next = i;
+		IoAdapter->tail = i;
+	}
+	else
+	{
+		IoAdapter->head = i;
+		IoAdapter->tail = i;
+	}
+/*
+ * queue the DPC to process the request
+ */
+	diva_os_schedule_soft_isr(&IoAdapter->req_soft_isr);
+	diva_os_leave_spin_lock(&IoAdapter->data_spin_lock, &irql, "data_req");
+}
+/* ---------------------------------------------------------------------
+   Main DPC routine
+   --------------------------------------------------------------------- */
+void DIDpcRoutine(struct _diva_os_soft_isr *psoft_isr, void *Context) {
+	PISDN_ADAPTER IoAdapter = (PISDN_ADAPTER)Context;
+	ADAPTER *a = &IoAdapter->a;
+	diva_os_atomic_t *pin_dpc = &IoAdapter->in_dpc;
+	if (diva_os_atomic_increment(pin_dpc) == 1) {
+		do {
+			if (IoAdapter->tst_irq(a))
+			{
+				if (!IoAdapter->Unavailable)
+					IoAdapter->dpc(a);
+				IoAdapter->clr_irq(a);
+			}
+			IoAdapter->out(a);
+		} while (diva_os_atomic_decrement(pin_dpc) > 0);
+		/* ----------------------------------------------------------------
+		   Look for XLOG request (cards with indirect addressing)
+		   ---------------------------------------------------------------- */
+		if (IoAdapter->pcm_pending) {
+			struct pc_maint *pcm;
+			diva_os_spin_lock_magic_t OldIrql;
+			diva_os_enter_spin_lock(&IoAdapter->data_spin_lock,
+						&OldIrql,
+						"data_dpc");
+			pcm = (struct pc_maint *)IoAdapter->pcm_data;
+			switch (IoAdapter->pcm_pending) {
+			case 1: /* ask card for XLOG */
+				a->ram_out(a, &IoAdapter->pcm->rc, 0);
+				a->ram_out(a, &IoAdapter->pcm->req, pcm->req);
+				IoAdapter->pcm_pending = 2;
+				break;
+			case 2: /* Try to get XLOG from the card */
+				if ((int)(a->ram_in(a, &IoAdapter->pcm->rc))) {
+					a->ram_in_buffer(a, IoAdapter->pcm, pcm, sizeof(*pcm));
+					IoAdapter->pcm_pending = 3;
+				}
+				break;
+			case 3: /* let XDI recovery XLOG */
+				break;
+			}
+			diva_os_leave_spin_lock(&IoAdapter->data_spin_lock,
+						&OldIrql,
+						"data_dpc");
+		}
+		/* ---------------------------------------------------------------- */
+	}
+}
+/* --------------------------------------------------------------------------
+   XLOG interface
+   -------------------------------------------------------------------------- */
+static void
+pcm_req(PISDN_ADAPTER IoAdapter, ENTITY *e)
+{
+	diva_os_spin_lock_magic_t OldIrql;
+	int              i, rc;
+	ADAPTER         *a = &IoAdapter->a;
+	struct pc_maint *pcm = (struct pc_maint *)&e->Ind;
+/*
+ * special handling of I/O based card interface
+ * the memory access isn't an atomic operation !
+ */
+	if (IoAdapter->Properties.Card == CARD_MAE)
+	{
+		diva_os_enter_spin_lock(&IoAdapter->data_spin_lock,
+					&OldIrql,
+					"data_pcm_1");
+		IoAdapter->pcm_data = (void *)pcm;
+		IoAdapter->pcm_pending = 1;
+		diva_os_schedule_soft_isr(&IoAdapter->req_soft_isr);
+		diva_os_leave_spin_lock(&IoAdapter->data_spin_lock,
+					&OldIrql,
+					"data_pcm_1");
+		for (rc = 0, i = (IoAdapter->trapped ? 3000 : 250); !rc && (i > 0); --i)
+		{
+			diva_os_sleep(1);
+			if (IoAdapter->pcm_pending == 3) {
+				diva_os_enter_spin_lock(&IoAdapter->data_spin_lock,
+							&OldIrql,
+							"data_pcm_3");
+				IoAdapter->pcm_pending = 0;
+				IoAdapter->pcm_data    = NULL;
+				diva_os_leave_spin_lock(&IoAdapter->data_spin_lock,
+							&OldIrql,
+							"data_pcm_3");
+				return;
+			}
+			diva_os_enter_spin_lock(&IoAdapter->data_spin_lock,
+						&OldIrql,
+						"data_pcm_2");
+			diva_os_schedule_soft_isr(&IoAdapter->req_soft_isr);
+			diva_os_leave_spin_lock(&IoAdapter->data_spin_lock,
+						&OldIrql,
+						"data_pcm_2");
+		}
+		diva_os_enter_spin_lock(&IoAdapter->data_spin_lock,
+					&OldIrql,
+					"data_pcm_4");
+		IoAdapter->pcm_pending = 0;
+		IoAdapter->pcm_data    = NULL;
+		diva_os_leave_spin_lock(&IoAdapter->data_spin_lock,
+					&OldIrql,
+					"data_pcm_4");
+		goto Trapped;
+	}
+/*
+ * memory based shared ram is accessible from different
+ * processors without disturbing concurrent processes.
+ */
+	a->ram_out(a, &IoAdapter->pcm->rc, 0);
+	a->ram_out(a, &IoAdapter->pcm->req, pcm->req);
+	for (i = (IoAdapter->trapped ? 3000 : 250); --i > 0;)
+	{
+		diva_os_sleep(1);
+		rc = (int)(a->ram_in(a, &IoAdapter->pcm->rc));
+		if (rc)
+		{
+			a->ram_in_buffer(a, IoAdapter->pcm, pcm, sizeof(*pcm));
+			return;
+		}
+	}
+Trapped:
+	if (IoAdapter->trapFnc)
+	{
+		int trapped = IoAdapter->trapped;
+		IoAdapter->trapFnc(IoAdapter);
+		/*
+		  Firs trap, also notify user if supported
+		*/
+		if (!trapped && IoAdapter->trapped && IoAdapter->os_trap_nfy_Fnc) {
+			(*(IoAdapter->os_trap_nfy_Fnc))(IoAdapter, IoAdapter->ANum);
+		}
+	}
+}
+/*------------------------------------------------------------------*/
+/* ram access functions for memory mapped cards                     */
+/*------------------------------------------------------------------*/
+byte mem_in(ADAPTER *a, void *addr)
+{
+	byte val;
+	volatile byte __iomem *Base = DIVA_OS_MEM_ATTACH_RAM((PISDN_ADAPTER)a->io);
+	val = READ_BYTE(Base + (unsigned long)addr);
+	DIVA_OS_MEM_DETACH_RAM((PISDN_ADAPTER)a->io, Base);
+	return (val);
+}
+word mem_inw(ADAPTER *a, void *addr)
+{
+	word val;
+	volatile byte __iomem *Base = DIVA_OS_MEM_ATTACH_RAM((PISDN_ADAPTER)a->io);
+	val = READ_WORD((Base + (unsigned long)addr));
+	DIVA_OS_MEM_DETACH_RAM((PISDN_ADAPTER)a->io, Base);
+	return (val);
+}
+void mem_in_dw(ADAPTER *a, void *addr, dword *data, int dwords)
+{
+	volatile byte __iomem *Base = DIVA_OS_MEM_ATTACH_RAM((PISDN_ADAPTER)a->io);
+	while (dwords--) {
+		*data++ = READ_DWORD((Base + (unsigned long)addr));
+		addr += 4;
+	}
+	DIVA_OS_MEM_DETACH_RAM((PISDN_ADAPTER)a->io, Base);
+}
+void mem_in_buffer(ADAPTER *a, void *addr, void *buffer, word length)
+{
+	volatile byte __iomem *Base = DIVA_OS_MEM_ATTACH_RAM((PISDN_ADAPTER)a->io);
+	memcpy_fromio(buffer, (Base + (unsigned long)addr), length);
+	DIVA_OS_MEM_DETACH_RAM((PISDN_ADAPTER)a->io, Base);
+}
+void mem_look_ahead(ADAPTER *a, PBUFFER *RBuffer, ENTITY *e)
+{
+	PISDN_ADAPTER IoAdapter = (PISDN_ADAPTER)a->io;
+	IoAdapter->RBuffer.length = mem_inw(a, &RBuffer->length);
+	mem_in_buffer(a, RBuffer->P, IoAdapter->RBuffer.P,
+		      IoAdapter->RBuffer.length);
+	e->RBuffer = (DBUFFER *)&IoAdapter->RBuffer;
+}
+void mem_out(ADAPTER *a, void *addr, byte data)
+{
+	volatile byte __iomem *Base = DIVA_OS_MEM_ATTACH_RAM((PISDN_ADAPTER)a->io);
+	WRITE_BYTE(Base + (unsigned long)addr, data);
+	DIVA_OS_MEM_DETACH_RAM((PISDN_ADAPTER)a->io, Base);
+}
+void mem_outw(ADAPTER *a, void *addr, word data)
+{
+	volatile byte __iomem *Base = DIVA_OS_MEM_ATTACH_RAM((PISDN_ADAPTER)a->io);
+	WRITE_WORD((Base + (unsigned long)addr), data);
+	DIVA_OS_MEM_DETACH_RAM((PISDN_ADAPTER)a->io, Base);
+}
+void mem_out_dw(ADAPTER *a, void *addr, const dword *data, int dwords)
+{
+	volatile byte __iomem *Base = DIVA_OS_MEM_ATTACH_RAM((PISDN_ADAPTER)a->io);
+	while (dwords--) {
+		WRITE_DWORD((Base + (unsigned long)addr), *data);
+		addr += 4;
+		data++;
+	}
+	DIVA_OS_MEM_DETACH_RAM((PISDN_ADAPTER)a->io, Base);
+}
+void mem_out_buffer(ADAPTER *a, void *addr, void *buffer, word length)
+{
+	volatile byte __iomem *Base = DIVA_OS_MEM_ATTACH_RAM((PISDN_ADAPTER)a->io);
+	memcpy_toio((Base + (unsigned long)addr), buffer, length);
+	DIVA_OS_MEM_DETACH_RAM((PISDN_ADAPTER)a->io, Base);
+}
+void mem_inc(ADAPTER *a, void *addr)
+{
+	volatile byte __iomem *Base = DIVA_OS_MEM_ATTACH_RAM((PISDN_ADAPTER)a->io);
+	byte  x = READ_BYTE(Base + (unsigned long)addr);
+	WRITE_BYTE(Base + (unsigned long)addr, x + 1);
+	DIVA_OS_MEM_DETACH_RAM((PISDN_ADAPTER)a->io, Base);
+}
+/*------------------------------------------------------------------*/
+/* ram access functions for io-mapped cards                         */
+/*------------------------------------------------------------------*/
+byte io_in(ADAPTER *a, void *adr)
+{
+	byte val;
+	byte __iomem *Port = DIVA_OS_MEM_ATTACH_PORT((PISDN_ADAPTER)a->io);
+	outppw(Port + 4, (word)(unsigned long)adr);
+	val = inpp(Port);
+	DIVA_OS_MEM_DETACH_PORT((PISDN_ADAPTER)a->io, Port);
+	return (val);
+}
+word io_inw(ADAPTER *a, void *adr)
+{
+	word val;
+	byte __iomem *Port = DIVA_OS_MEM_ATTACH_PORT((PISDN_ADAPTER)a->io);
+	outppw(Port + 4, (word)(unsigned long)adr);
+	val = inppw(Port);
+	DIVA_OS_MEM_DETACH_PORT((PISDN_ADAPTER)a->io, Port);
+	return (val);
+}
+void io_in_buffer(ADAPTER *a, void *adr, void *buffer, word len)
+{
+	byte __iomem *Port = DIVA_OS_MEM_ATTACH_PORT((PISDN_ADAPTER)a->io);
+	byte *P = (byte *)buffer;
+	if ((long)adr & 1) {
+		outppw(Port + 4, (word)(unsigned long)adr);
+		*P = inpp(Port);
+		P++;
+		adr = ((byte *) adr) + 1;
+		len--;
+		if (!len) {
+			DIVA_OS_MEM_DETACH_PORT((PISDN_ADAPTER)a->io, Port);
+			return;
+		}
+	}
+	outppw(Port + 4, (word)(unsigned long)adr);
+	inppw_buffer(Port, P, len + 1);
+	DIVA_OS_MEM_DETACH_PORT((PISDN_ADAPTER)a->io, Port);
+}
+void io_look_ahead(ADAPTER *a, PBUFFER *RBuffer, ENTITY *e)
+{
+	byte __iomem *Port = DIVA_OS_MEM_ATTACH_PORT((PISDN_ADAPTER)a->io);
+	outppw(Port + 4, (word)(unsigned long)RBuffer);
+	((PISDN_ADAPTER)a->io)->RBuffer.length = inppw(Port);
+	inppw_buffer(Port, ((PISDN_ADAPTER)a->io)->RBuffer.P, ((PISDN_ADAPTER)a->io)->RBuffer.length + 1);
+	e->RBuffer = (DBUFFER *) &(((PISDN_ADAPTER)a->io)->RBuffer);
+	DIVA_OS_MEM_DETACH_PORT((PISDN_ADAPTER)a->io, Port);
+}
+void io_out(ADAPTER *a, void *adr, byte data)
+{
+	byte __iomem *Port = DIVA_OS_MEM_ATTACH_PORT((PISDN_ADAPTER)a->io);
+	outppw(Port + 4, (word)(unsigned long)adr);
+	outpp(Port, data);
+	DIVA_OS_MEM_DETACH_PORT((PISDN_ADAPTER)a->io, Port);
+}
+void io_outw(ADAPTER *a, void *adr, word data)
+{
+	byte __iomem *Port = DIVA_OS_MEM_ATTACH_PORT((PISDN_ADAPTER)a->io);
+	outppw(Port + 4, (word)(unsigned long)adr);
+	outppw(Port, data);
+	DIVA_OS_MEM_DETACH_PORT((PISDN_ADAPTER)a->io, Port);
+}
+void io_out_buffer(ADAPTER *a, void *adr, void *buffer, word len)
+{
+	byte __iomem *Port = DIVA_OS_MEM_ATTACH_PORT((PISDN_ADAPTER)a->io);
+	byte *P = (byte *)buffer;
+	if ((long)adr & 1) {
+		outppw(Port + 4, (word)(unsigned long)adr);
+		outpp(Port, *P);
+		P++;
+		adr = ((byte *) adr) + 1;
+		len--;
+		if (!len) {
+			DIVA_OS_MEM_DETACH_PORT((PISDN_ADAPTER)a->io, Port);
+			return;
+		}
+	}
+	outppw(Port + 4, (word)(unsigned long)adr);
+	outppw_buffer(Port, P, len + 1);
+	DIVA_OS_MEM_DETACH_PORT((PISDN_ADAPTER)a->io, Port);
+}
+void io_inc(ADAPTER *a, void *adr)
+{
+	byte x;
+	byte __iomem *Port = DIVA_OS_MEM_ATTACH_PORT((PISDN_ADAPTER)a->io);
+	outppw(Port + 4, (word)(unsigned long)adr);
+	x = inpp(Port);
+	outppw(Port + 4, (word)(unsigned long)adr);
+	outpp(Port, x + 1);
+	DIVA_OS_MEM_DETACH_PORT((PISDN_ADAPTER)a->io, Port);
+}
+/*------------------------------------------------------------------*/
+/* OS specific functions related to queuing of entities             */
+/*------------------------------------------------------------------*/
+void free_entity(ADAPTER *a, byte e_no)
+{
+	PISDN_ADAPTER IoAdapter;
+	diva_os_spin_lock_magic_t irql;
+	IoAdapter = (PISDN_ADAPTER) a->io;
+	diva_os_enter_spin_lock(&IoAdapter->data_spin_lock, &irql, "data_free");
+	IoAdapter->e_tbl[e_no].e = NULL;
+	IoAdapter->e_count--;
+	diva_os_leave_spin_lock(&IoAdapter->data_spin_lock, &irql, "data_free");
+}
+void assign_queue(ADAPTER *a, byte e_no, word ref)
+{
+	PISDN_ADAPTER IoAdapter;
+	diva_os_spin_lock_magic_t irql;
+	IoAdapter = (PISDN_ADAPTER) a->io;
+	diva_os_enter_spin_lock(&IoAdapter->data_spin_lock, &irql, "data_assign");
+	IoAdapter->e_tbl[e_no].assign_ref = ref;
+	IoAdapter->e_tbl[e_no].next = (byte)IoAdapter->assign;
+	IoAdapter->assign = e_no;
+	diva_os_leave_spin_lock(&IoAdapter->data_spin_lock, &irql, "data_assign");
+}
+byte get_assign(ADAPTER *a, word ref)
+{
+	PISDN_ADAPTER IoAdapter;
+	diva_os_spin_lock_magic_t irql;
+	byte e_no;
+	IoAdapter = (PISDN_ADAPTER) a->io;
+	diva_os_enter_spin_lock(&IoAdapter->data_spin_lock,
+				&irql,
+				"data_assign_get");
+	for (e_no = (byte)IoAdapter->assign;
+	    e_no && IoAdapter->e_tbl[e_no].assign_ref != ref;
+	    e_no = IoAdapter->e_tbl[e_no].next);
+	diva_os_leave_spin_lock(&IoAdapter->data_spin_lock,
+				&irql,
+				"data_assign_get");
+	return e_no;
+}
+void req_queue(ADAPTER *a, byte e_no)
+{
+	PISDN_ADAPTER IoAdapter;
+	diva_os_spin_lock_magic_t irql;
+	IoAdapter = (PISDN_ADAPTER) a->io;
+	diva_os_enter_spin_lock(&IoAdapter->data_spin_lock, &irql, "data_req_q");
+	IoAdapter->e_tbl[e_no].next = 0;
+	if (IoAdapter->head) {
+		IoAdapter->e_tbl[IoAdapter->tail].next = e_no;
+		IoAdapter->tail = e_no;
+	}
+	else {
+		IoAdapter->head = e_no;
+		IoAdapter->tail = e_no;
+	}
+	diva_os_leave_spin_lock(&IoAdapter->data_spin_lock, &irql, "data_req_q");
+}
+byte look_req(ADAPTER *a)
+{
+	PISDN_ADAPTER IoAdapter;
+	IoAdapter = (PISDN_ADAPTER) a->io;
+	return ((byte)IoAdapter->head);
+}
+void next_req(ADAPTER *a)
+{
+	PISDN_ADAPTER IoAdapter;
+	diva_os_spin_lock_magic_t irql;
+	IoAdapter = (PISDN_ADAPTER) a->io;
+	diva_os_enter_spin_lock(&IoAdapter->data_spin_lock, &irql, "data_req_next");
+	IoAdapter->head = IoAdapter->e_tbl[IoAdapter->head].next;
+	if (!IoAdapter->head) IoAdapter->tail = 0;
+	diva_os_leave_spin_lock(&IoAdapter->data_spin_lock, &irql, "data_req_next");
+}
+/*------------------------------------------------------------------*/
+/* memory map functions                                             */
+/*------------------------------------------------------------------*/
+ENTITY *entity_ptr(ADAPTER *a, byte e_no)
+{
+	PISDN_ADAPTER IoAdapter;
+	IoAdapter = (PISDN_ADAPTER)a->io;
+	return (IoAdapter->e_tbl[e_no].e);
+}
+void *PTR_X(ADAPTER *a, ENTITY *e)
+{
+	return ((void *) e->X);
+}
+void *PTR_R(ADAPTER *a, ENTITY *e)
+{
+	return ((void *) e->R);
+}
+void *PTR_P(ADAPTER *a, ENTITY *e, void *P)
+{
+	return P;
+}
+void CALLBACK(ADAPTER *a, ENTITY *e)
+{
+	if (e && e->callback)
+		e->callback(e);
+}