[ARM] tegra: add nvos/nvrm/nvmap drivers

arch/arm/mach-tegra/nv/include/nvrm_pcie.h

+/*
+ * Copyright (c) 2009 NVIDIA Corporation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of the NVIDIA Corporation nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef INCLUDED_nvrm_pcie_H
+#define INCLUDED_nvrm_pcie_H
+
+
+#if defined(__cplusplus)
+extern "C"
+{
+#endif
+
+#include "nvrm_module.h"
+#include "nvrm_init.h"
+
+typedef enum
+{
+
+    // NvRm PCIE access type read
+        NvRmPcieAccessType_Read,
+
+    // NvRm PCIE access type write
+        NvRmPcieAccessType_Write,
+    NvRmPcieAccessType_Num,
+    NvRmPcieAccessType_Force32 = 0x7FFFFFFF
+} NvRmPcieAccessType;
+
+
+/** Reads or writes the config space of the PCI device. 
+ * 
+ * @param hRmDeviceHandle The Rm device handle
+ * @param bus_number Bus number on on which the device is present.
+ * @param type   Specifies the access type
+ * @param offset Start offset to read the configuration data
+ * @param Data   Data in bytes used to read/write from/to device config space,
+ * depending on the access type.
+ * @param DataLen Sepcifies the length of Data Array.
+ *
+ *  Returns NvSuccess or the appropriate error code.
+ */
+
+ NvError NvRmReadWriteConfigSpace( 
+    NvRmDeviceHandle hDeviceHandle,
+    NvU32 bus_number,
+    NvRmPcieAccessType type,
+    NvU32 offset,
+    NvU8 * Data,
+    NvU32 DataLen );
+
+
+/** Registers a MSI handler for the device at an index.
+ *
+ * @param hRmDeviceHandle The Rm device handle
+ * @param function_device_bus function/device/bus tuple.
+ * @param index Msi index. Some devices support more than 1 MSI. For those
+ * devices, index value is from (0 to max-1)
+ * @param sem Semaphore which will be signalled when the MSI interrupt is
+ * triggered.
+ * @param InterruptEnable To enable or disable interrupt.
+ *
+ *  Returns NvSuccess or the appropriate error code.
+ */
+
+
+ NvError NvRmRegisterPcieMSIHandler( 
+    NvRmDeviceHandle hDeviceHandle,
+    NvU32 function_device_bus,
+    NvU32 index,
+    NvOsSemaphoreHandle sem,
+    NvBool InterruptEnable );
+
+ NvError NvRmRegisterPcieLegacyHandler( 
+    NvRmDeviceHandle hDeviceHandle,
+    NvU32 function_device_bus,
+    NvOsSemaphoreHandle sem,
+    NvBool InterruptEnable );
+
+//  PCIE address map supports 64-bit addressing. But, RM driver only supports
+//  32-addressing. In the future, if the device supports 64-bit addressing, one
+//  can change this typedef.
+
+typedef NvU32 NvRmPciPhysAddr;
+
+/**
+ * Attemtps to map the Pcie memory to the 32-bit AXI address region.
+ * Ap20 reserves only 1GB PCIe aperture. Out of that 1GB, some region is reserved for
+ * the register/config/msi access. Only 768MB is left out for the PCIe memory aperture. 
+ * 
+ * @param hRmDeviceHandle   Rm device handle
+ * @param mem               "Base address registers" of a PCI device.
+ * 
+ * Returns the mapped AXI address. If the mapping fails, it returns 0.
+ */
+
+ NvRmPhysAddr NvRmMapPciMemory( 
+    NvRmDeviceHandle hDeviceHandle,
+    NvRmPciPhysAddr mem,
+    NvU32 size );
+
+/** Unmaps the PCI to AXI address mapping
+ *  
+ * @param hRmDeviceHandle Rm device handle
+ * @param mem               AXI addresses mapped by calling NvRmMapPcieMemory
+ * API.
+ */
+
+ void NvRmUnmapPciMemory( 
+    NvRmDeviceHandle hDeviceHandle,
+    NvRmPhysAddr mem,
+    NvU32 size );
+
+/** @} */
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif