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

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

+/*
+ * Copyright (c) 2007-2009 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_ARM_CP_H
+#define INCLUDED_ARM_CP_H
+
+#include "nvassert.h"
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+//==========================================================================
+// Compiler-specific status and coprocessor register abstraction macros.
+//==========================================================================
+
+#if defined(_MSC_VER) && NVOS_IS_WINDOWS_CE // Microsoft compiler on WinCE
+
+    // Define the standard ARM coprocessor register names because the ARM compiler requires
+    // that we use the names and the Microsoft compiler requires that we use the numbers for
+    // its intrinsic functions _MoveToCoprocessor() and _MoveFromCoprocessor().
+    #define p14     14
+    #define p15     15
+    #define c0      0
+    #define c1      1
+    #define c2      2
+    #define c3      3
+    #define c4      4
+    #define c5      5
+    #define c6      6
+    #define c7      7
+    #define c8      8
+    #define c9      9
+    #define c10     10
+    #define c11     11
+    #define c12     12
+    #define c13     13
+    #define c14     14
+    #define c15     15
+
+    /*
+     *  @brief Macro to abstract writing of a ARM coprocessor register via the MCR instruction.
+     *  @param cp is the coprocessor name (e.g., p15)
+     *  @param op1 is a coprocessor-specific operation code (must be a manifest constant).
+     *  @param Rd is a variable that will receive the value read from the coprocessor register.
+     *  @param CRn is the destination coprocessor register (e.g., c7).
+     *  @param CRm is an additional destination coprocessor register (e.g., c2).
+     *  @param op2 is a coprocessor-specific operation code (must be a manifest constant).
+    */
+    #define MCR(cp,op1,Rd,CRn,CRm,op2)  _MoveToCoprocessor((NvU32)(Rd), cp, op1, CRn, CRm, op2)
+
+    /*
+     *  @brief Macro to abstract reading of a ARM coprocessor register via the MRC instruction.
+     *  @param cp is the coprocessor name (e.g., p15)
+     *  @param op1 is a coprocessor-specific operation code (must be a manifest constant).
+     *  @param Rd is a variable that will receive the value read from the coprocessor register.
+     *  @param CRn is the destination coprocessor register (e.g., c7).
+     *  @param CRm is an additional destination coprocessor register (e.g., c2).
+     *  @param op2 is a coprocessor-specific operation code (must be a manifest constant).
+    */
+    #define MRC(cp,op1,Rd,CRn,CRm,op2)  *((NvU32*)(&(Rd))) = _MoveFromCoprocessor(cp, op1, CRn, CRm, op2)
+
+#elif defined(__ARMCC_VERSION)  // ARM compiler
+
+    /*
+     *  @brief Macro to abstract writing of a ARM coprocessor register via the MCR instruction.
+     *  @param cp is the coprocessor name (e.g., p15)
+     *  @param op1 is a coprocessor-specific operation code (must be a manifest constant).
+     *  @param Rd is a variable that will be written to the coprocessor register.
+     *  @param CRn is the destination coprocessor register (e.g., c7)
+     *  @param CRm is an additional destination coprocessor register (e.g., c2).
+     *  @param op2 is a coprocessor-specific operation code (must be a manifest constant).
+    */
+    #define MCR(cp,op1,Rd,CRn,CRm,op2)  __asm { MCR cp, op1, Rd, CRn, CRm, op2 }
+
+    /*
+     *  @brief Macro to abstract reading of a ARM coprocessor register via the MRC instruction.
+     *  @param cp is the coprocessor name (e.g., p15)
+     *  @param op1 is a coprocessor-specific operation code (must be a manifest constant).
+     *  @param Rd is a variable that will receive the value read from the coprocessor register.
+     *  @param CRn is the destination coprocessor register (e.g., c7).
+     *  @param CRm is an additional destination coprocessor register (e.g., c2).
+     *  @param op2 is a coprocessor-specific operation code (must be a manifest constant).
+    */
+    #define MRC(cp,op1,Rd,CRn,CRm,op2)  __asm { MRC cp, op1, Rd, CRn, CRm, op2 }
+
+#elif NVOS_IS_LINUX || __GNUC__ // linux compilers
+
+    #if defined(__arm__)    // ARM GNU compiler
+
+    // Define the standard ARM coprocessor register names because the ARM compiler requires
+    // that we use the names and the GNU compiler requires that we use the numbers.
+    #define p14     14
+    #define p15     15
+    #define c0      0
+    #define c1      1
+    #define c2      2
+    #define c3      3
+    #define c4      4
+    #define c5      5
+    #define c6      6
+    #define c7      7
+    #define c8      8
+    #define c9      9
+    #define c10     10
+    #define c11     11
+    #define c12     12
+    #define c13     13
+    #define c14     14
+    #define c15     15
+
+    /*
+     *  @brief Macro to abstract writing of a ARM coprocessor register via the MCR instruction.
+     *  @param cp is the coprocessor name (e.g., p15)
+     *  @param op1 is a coprocessor-specific operation code (must be a manifest constant).
+     *  @param Rd is a variable that will receive the value read from the coprocessor register.
+     *  @param CRn is the destination coprocessor register (e.g., c7).
+     *  @param CRm is an additional destination coprocessor register (e.g., c2).
+     *  @param op2 is a coprocessor-specific operation code (must be a manifest constant).
+    */
+    #define MCR(cp,op1,Rd,CRn,CRm,op2)  asm(" MCR " #cp",%1,%2,"#CRn","#CRm ",%5" \
+        : : "i" (cp), "i" (op1), "r" (Rd), "i" (CRn), "i" (CRm), "i" (op2))
+
+    /*
+     *  @brief Macro to abstract reading of a ARM coprocessor register via the MRC instruction.
+     *  @param cp is the coprocessor name (e.g., p15)
+     *  @param op1 is a coprocessor-specific operation code (must be a manifest constant).
+     *  @param Rd is a variable that will receive the value read from the coprocessor register.
+     *  @param CRn is the destination coprocessor register (e.g., c7).
+     *  @param CRm is an additional destination coprocessor register (e.g., c2).
+     *  @param op2 is a coprocessor-specific operation code (must be a manifest constant).
+    */
+    #define MRC(cp,op1,Rd,CRn,CRm,op2)  asm( " MRC " #cp",%2,%0," #CRn","#CRm",%5" \
+        : "=r" (Rd) : "i" (cp), "i" (op1), "i" (CRn), "i" (CRm), "i" (op2))
+
+    #else
+    
+    /* x86 processor. No such instructions. Callers should not call these macros
+     * when running on x86. If they do, it will compile but will not work. */
+    #define MCR(cp,op1,Rd,CRn,CRm,op2)  do { Rd = Rd; NV_ASSERT(0); } while (0)
+    #define MRC(cp,op1,Rd,CRn,CRm,op2)  do { Rd = 0; /*NV_ASSERT(0);*/ } while (0)
+
+    #endif
+#else
+
+    // !!!FIXME!!! TEST FOR ALL KNOWN COMPILERS -- FOR NOW JUST DIE AT RUN-TIME
+    // #error "Unknown compiler"
+    #define MCR(cp,op1,Rd,CRn,CRm,op2)  do { Rd = Rd; NV_ASSERT(0); } while (0)
+    #define MRC(cp,op1,Rd,CRn,CRm,op2)  do { Rd = 0; /*NV_ASSERT(0);*/ } while (0)
+
+#endif
+
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif // INCLUDED_ARM_CP_H
+