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Diffstat (limited to 'firmwares/wifishield/wifiHD/src/SOFTWARE_FRAMEWORK/DRIVERS/INTC')
3 files changed, 0 insertions, 553 deletions
diff --git a/firmwares/wifishield/wifiHD/src/SOFTWARE_FRAMEWORK/DRIVERS/INTC/exception.x b/firmwares/wifishield/wifiHD/src/SOFTWARE_FRAMEWORK/DRIVERS/INTC/exception.x deleted file mode 100644 index ec4109d..0000000 --- a/firmwares/wifishield/wifiHD/src/SOFTWARE_FRAMEWORK/DRIVERS/INTC/exception.x +++ /dev/null @@ -1,239 +0,0 @@ -/* This file is part of the ATMEL AVR-UC3-SoftwareFramework-1.7.0 Release */ - -/*This file is prepared for Doxygen automatic documentation generation.*/ -/*! \file ********************************************************************* - * - * \brief Exception and interrupt vectors. - * - * This file maps all events supported by an AVR32. - * - * - Compiler: GNU GCC for AVR32 - * - Supported devices: All AVR32 devices with an INTC module can be used. - * - AppNote: - * - * \author Atmel Corporation: http://www.atmel.com \n - * Support and FAQ: http://support.atmel.no/ - * - ******************************************************************************/ - -/* Copyright (c) 2009 Atmel 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: - * - * 1. Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * 2. 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. - * - * 3. The name of Atmel may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * 4. This software may only be redistributed and used in connection with an Atmel - * AVR product. - * - * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE - * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL 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 - * - */ - -#if !__AVR32_UC__ && !__AVR32_AP__ - #error Implementation of the AVR32 architecture not supported by the INTC driver. -#endif - - -#include <avr32/io.h> - - -//! @{ -//! \verbatim - - - .section .exception, "ax", @progbits - - -// Start of Exception Vector Table. - - // EVBA must be aligned with a power of two strictly greater than the EVBA- - // relative offset of the last vector. - .balign 0x200 - - // Export symbol. - .global _evba - .type _evba, @function -_evba: - - .org 0x000 - // Unrecoverable Exception. -_handle_Unrecoverable_Exception: - rjmp $ - - .org 0x004 - // TLB Multiple Hit. -_handle_TLB_Multiple_Hit: - rjmp $ - - .org 0x008 - // Bus Error Data Fetch. -_handle_Bus_Error_Data_Fetch: - rjmp $ - - .org 0x00C - // Bus Error Instruction Fetch. -_handle_Bus_Error_Instruction_Fetch: - rjmp $ - - .org 0x010 - // NMI. -_handle_NMI: - rjmp $ - - .org 0x014 - // Instruction Address. -_handle_Instruction_Address: - rjmp $ - - .org 0x018 - // ITLB Protection. -_handle_ITLB_Protection: - rjmp $ - - .org 0x01C - // Breakpoint. -_handle_Breakpoint: - rjmp $ - - .org 0x020 - // Illegal Opcode. -_handle_Illegal_Opcode: - rjmp $ - - .org 0x024 - // Unimplemented Instruction. -_handle_Unimplemented_Instruction: - rjmp $ - - .org 0x028 - // Privilege Violation. -_handle_Privilege_Violation: - rjmp $ - - .org 0x02C - // Floating-Point: UNUSED IN AVR32UC and AVR32AP. -_handle_Floating_Point: - rjmp $ - - .org 0x030 - // Coprocessor Absent: UNUSED IN AVR32UC. -_handle_Coprocessor_Absent: - rjmp $ - - .org 0x034 - // Data Address (Read). -_handle_Data_Address_Read: - rjmp $ - - .org 0x038 - // Data Address (Write). -_handle_Data_Address_Write: - rjmp $ - - .org 0x03C - // DTLB Protection (Read). -_handle_DTLB_Protection_Read: - rjmp $ - - .org 0x040 - // DTLB Protection (Write). -_handle_DTLB_Protection_Write: - rjmp $ - - .org 0x044 - // DTLB Modified: UNUSED IN AVR32UC. -_handle_DTLB_Modified: - rjmp $ - - .org 0x050 - // ITLB Miss. -_handle_ITLB_Miss: - rjmp $ - - .org 0x060 - // DTLB Miss (Read). -_handle_DTLB_Miss_Read: - rjmp $ - - .org 0x070 - // DTLB Miss (Write). -_handle_DTLB_Miss_Write: - rjmp $ - - .org 0x100 - // Supervisor Call. -_handle_Supervisor_Call: - rjmp $ - - -// Interrupt support. -// The interrupt controller must provide the offset address relative to EVBA. -// Important note: -// All interrupts call a C function named _get_interrupt_handler. -// This function will read group and interrupt line number to then return in -// R12 a pointer to a user-provided interrupt handler. - - .balign 4 - - .irp priority, 0, 1, 2, 3 -_int\priority: -#if __AVR32_UC__ - // R8-R12, LR, PC and SR are automatically pushed onto the system stack by the - // CPU upon interrupt entry. No other register is saved by hardware. -#elif __AVR32_AP__ - // PC and SR are automatically saved in respectively RAR_INTx and RSR_INTx by - // the CPU upon interrupt entry. No other register is saved by hardware. - pushm r8-r12, lr -#endif - mov r12, \priority // Pass the int_level parameter to the _get_interrupt_handler function. - call _get_interrupt_handler - cp.w r12, 0 // Get the pointer to the interrupt handler returned by the function. -#if __AVR32_UC__ - movne pc, r12 // If this was not a spurious interrupt (R12 != NULL), jump to the handler. -#elif __AVR32_AP__ - breq spint\priority // If this was a spurious interrupt (R12 == NULL), branch. - st.w --sp, r12 // Push the pointer to the interrupt handler onto the system stack since no register may be altered. - popm r8-r12, lr, pc // Restore registers and jump to the handler. -spint\priority: - popm r8-r12, lr -#endif - rete // If this was a spurious interrupt (R12 == NULL), return from event handler. - .endr - - -// Constant data area. - - .balign 4 - - // Values to store in the interrupt priority registers for the various interrupt priority levels. - // The interrupt priority registers contain the interrupt priority level and - // the EVBA-relative interrupt vector offset. - .global ipr_val - .type ipr_val, @object -ipr_val: - .word (AVR32_INTC_INT0 << AVR32_INTC_IPR_INTLEVEL_OFFSET) | (_int0 - _evba),\ - (AVR32_INTC_INT1 << AVR32_INTC_IPR_INTLEVEL_OFFSET) | (_int1 - _evba),\ - (AVR32_INTC_INT2 << AVR32_INTC_IPR_INTLEVEL_OFFSET) | (_int2 - _evba),\ - (AVR32_INTC_INT3 << AVR32_INTC_IPR_INTLEVEL_OFFSET) | (_int3 - _evba) - - -//! \endverbatim -//! @} diff --git a/firmwares/wifishield/wifiHD/src/SOFTWARE_FRAMEWORK/DRIVERS/INTC/intc.c b/firmwares/wifishield/wifiHD/src/SOFTWARE_FRAMEWORK/DRIVERS/INTC/intc.c deleted file mode 100644 index 84d498d..0000000 --- a/firmwares/wifishield/wifiHD/src/SOFTWARE_FRAMEWORK/DRIVERS/INTC/intc.c +++ /dev/null @@ -1,214 +0,0 @@ -/* This source file is part of the ATMEL AVR-UC3-SoftwareFramework-1.7.0 Release */ - -/*This file is prepared for Doxygen automatic documentation generation.*/ -/*! \file ********************************************************************* - * - * \brief INTC driver for AVR32 UC3. - * - * AVR32 Interrupt Controller driver module. - * - * - Compiler: IAR EWAVR32 and GNU GCC for AVR32 - * - Supported devices: All AVR32 devices with an INTC module can be used. - * - AppNote: - * - * \author Atmel Corporation: http://www.atmel.com \n - * Support and FAQ: http://support.atmel.no/ - * - ******************************************************************************/ - -/* Copyright (c) 2009 Atmel 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: - * - * 1. Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * 2. 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. - * - * 3. The name of Atmel may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * 4. This software may only be redistributed and used in connection with an Atmel - * AVR product. - * - * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE - * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL 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 - * - */ - -#include <avr32/io.h> -#include "compiler.h" -#include "preprocessor.h" -#include "intc.h" - -// define _evba from exception.S -extern void _evba; - -//! Values to store in the interrupt priority registers for the various interrupt priority levels. -extern const unsigned int ipr_val[AVR32_INTC_NUM_INT_LEVELS]; - -//! Creates a table of interrupt line handlers per interrupt group in order to optimize RAM space. -//! Each line handler table contains a set of pointers to interrupt handlers. -#if (defined __GNUC__) -#define DECL_INT_LINE_HANDLER_TABLE(GRP, unused) \ -static volatile __int_handler _int_line_handler_table_##GRP[Max(AVR32_INTC_NUM_IRQS_PER_GRP##GRP, 1)]; -#elif (defined __ICCAVR32__) -#define DECL_INT_LINE_HANDLER_TABLE(GRP, unused) \ -static volatile __no_init __int_handler _int_line_handler_table_##GRP[Max(AVR32_INTC_NUM_IRQS_PER_GRP##GRP, 1)]; -#endif -MREPEAT(AVR32_INTC_NUM_INT_GRPS, DECL_INT_LINE_HANDLER_TABLE, ~); -#undef DECL_INT_LINE_HANDLER_TABLE - -//! Table containing for each interrupt group the number of interrupt request -//! lines and a pointer to the table of interrupt line handlers. -static const struct -{ - unsigned int num_irqs; - volatile __int_handler *_int_line_handler_table; -} _int_handler_table[AVR32_INTC_NUM_INT_GRPS] = -{ -#define INSERT_INT_LINE_HANDLER_TABLE(GRP, unused) \ - {AVR32_INTC_NUM_IRQS_PER_GRP##GRP, _int_line_handler_table_##GRP}, - MREPEAT(AVR32_INTC_NUM_INT_GRPS, INSERT_INT_LINE_HANDLER_TABLE, ~) -#undef INSERT_INT_LINE_HANDLER_TABLE -}; - - -/*! \brief Default interrupt handler. - * - * \note Taken and adapted from Newlib. - */ -#if (defined __GNUC__) -__attribute__((__interrupt__)) -#elif (defined __ICCAVR32__) -__interrupt -#endif -static void _unhandled_interrupt(void) -{ - // Catch unregistered interrupts. - while (TRUE); -} - - -/*! \brief Gets the interrupt handler of the current event at the \a int_level - * interrupt priority level (called from exception.S). - * - * \param int_level Interrupt priority level to handle. - * - * \return Interrupt handler to execute. - * - * \note Taken and adapted from Newlib. - */ -__int_handler _get_interrupt_handler(unsigned int int_level) -{ - // ICR3 is mapped first, ICR0 last. - // Code in exception.S puts int_level in R12 which is used by AVR32-GCC to - // pass a single argument to a function. - unsigned int int_grp = AVR32_INTC.icr[AVR32_INTC_INT3 - int_level]; - unsigned int int_req = AVR32_INTC.irr[int_grp]; - - // As an interrupt may disappear while it is being fetched by the CPU - // (spurious interrupt caused by a delayed response from an MCU peripheral to - // an interrupt flag clear or interrupt disable instruction), check if there - // are remaining interrupt lines to process. - // If a spurious interrupt occurs, the status register (SR) contains an - // execution mode and interrupt level masks corresponding to a level 0 - // interrupt, whatever the interrupt priority level causing the spurious - // event. This behavior has been chosen because a spurious interrupt has not - // to be a priority one and because it may not cause any trouble to other - // interrupts. - // However, these spurious interrupts place the hardware in an unstable state - // and could give problems in other/future versions of the CPU, so the - // software has to be written so that they never occur. The only safe way of - // achieving this is to always clear or disable peripheral interrupts with the - // following sequence: - // 1: Mask the interrupt in the CPU by setting GM (or IxM) in SR. - // 2: Perform the bus access to the peripheral register that clears or - // disables the interrupt. - // 3: Wait until the interrupt has actually been cleared or disabled by the - // peripheral. This is usually performed by reading from a register in the - // same peripheral (it DOES NOT have to be the same register that was - // accessed in step 2, but it MUST be in the same peripheral), what takes - // bus system latencies into account, but peripheral internal latencies - // (generally 0 cycle) also have to be considered. - // 4: Unmask the interrupt in the CPU by clearing GM (or IxM) in SR. - // Note that steps 1 and 4 are useless inside interrupt handlers as the - // corresponding interrupt level is automatically masked by IxM (unless IxM is - // explicitly cleared by the software). - // - // Get the right IRQ handler. - // - // If several interrupt lines are active in the group, the interrupt line with - // the highest number is selected. This is to be coherent with the - // prioritization of interrupt groups performed by the hardware interrupt - // controller. - // - // If no handler has been registered for the pending interrupt, - // _unhandled_interrupt will be selected thanks to the initialization of - // _int_line_handler_table_x by INTC_init_interrupts. - // - // exception.S will provide the interrupt handler with a clean interrupt stack - // frame, with nothing more pushed onto the stack. The interrupt handler must - // manage the `rete' instruction, what can be done thanks to pure assembly, - // inline assembly or the `__attribute__((__interrupt__))' C function - // attribute. - return (int_req) ? _int_handler_table[int_grp]._int_line_handler_table[32 - clz(int_req) - 1] : NULL; -} - -//! Init EVBA address. This sequence might also be done in the UTILS/STARTUP/GCC/crt0.S -static __inline__ void INTC_init_evba(void) -{ - Set_system_register(AVR32_EVBA, (int)&_evba ); -} - -void INTC_init_interrupts(void) -{ - unsigned int int_grp, int_req; - - INTC_init_evba(); - - // For all interrupt groups, - for (int_grp = 0; int_grp < AVR32_INTC_NUM_INT_GRPS; int_grp++) - { - // For all interrupt request lines of each group, - for (int_req = 0; int_req < _int_handler_table[int_grp].num_irqs; int_req++) - { - // Assign _unhandled_interrupt as default interrupt handler. - _int_handler_table[int_grp]._int_line_handler_table[int_req] = &_unhandled_interrupt; - } - - // Set the interrupt group priority register to its default value. - // By default, all interrupt groups are linked to the interrupt priority - // level 0 and to the interrupt vector _int0. - AVR32_INTC.ipr[int_grp] = ipr_val[AVR32_INTC_INT0]; - } -} - - -void INTC_register_interrupt(__int_handler handler, unsigned int irq, unsigned int int_level) -{ - // Determine the group of the IRQ. - unsigned int int_grp = irq / AVR32_INTC_MAX_NUM_IRQS_PER_GRP; - - // Store in _int_line_handler_table_x the pointer to the interrupt handler, so - // that _get_interrupt_handler can retrieve it when the interrupt is vectored. - _int_handler_table[int_grp]._int_line_handler_table[irq % AVR32_INTC_MAX_NUM_IRQS_PER_GRP] = handler; - - // Program the corresponding IPRX register to set the interrupt priority level - // and the interrupt vector offset that will be fetched by the core interrupt - // system. - // NOTE: The _intx functions are intermediate assembly functions between the - // core interrupt system and the user interrupt handler. - AVR32_INTC.ipr[int_grp] = ipr_val[int_level & (AVR32_INTC_IPR_INTLEVEL_MASK >> AVR32_INTC_IPR_INTLEVEL_OFFSET)]; -} diff --git a/firmwares/wifishield/wifiHD/src/SOFTWARE_FRAMEWORK/DRIVERS/INTC/intc.h b/firmwares/wifishield/wifiHD/src/SOFTWARE_FRAMEWORK/DRIVERS/INTC/intc.h deleted file mode 100644 index 31a4fc1..0000000 --- a/firmwares/wifishield/wifiHD/src/SOFTWARE_FRAMEWORK/DRIVERS/INTC/intc.h +++ /dev/null @@ -1,100 +0,0 @@ -/* This header file is part of the ATMEL AVR-UC3-SoftwareFramework-1.7.0 Release */ - -/*This file is prepared for Doxygen automatic documentation generation.*/ -/*! \file ********************************************************************* - * - * \brief INTC driver for AVR32 UC3. - * - * AVR32 Interrupt Controller driver module. - * - * - Compiler: IAR EWAVR32 and GNU GCC for AVR32 - * - Supported devices: All AVR32 devices with an INTC module can be used. - * - AppNote: - * - * \author Atmel Corporation: http://www.atmel.com \n - * Support and FAQ: http://support.atmel.no/ - * - ******************************************************************************/ - -/* Copyright (c) 2009 Atmel 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: - * - * 1. Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * 2. 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. - * - * 3. The name of Atmel may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * 4. This software may only be redistributed and used in connection with an Atmel - * AVR product. - * - * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE - * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL 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 _INTC_H_ -#define _INTC_H_ - -#include "compiler.h" - - -//! Maximal number of interrupt request lines per group. -#define AVR32_INTC_MAX_NUM_IRQS_PER_GRP 32 - -//! Number of interrupt priority levels. -#define AVR32_INTC_NUM_INT_LEVELS (1 << AVR32_INTC_IPR_INTLEVEL_SIZE) - - -#ifdef __AVR32_ABI_COMPILER__ // Automatically defined when compiling for AVR32, not when assembling. - -//! Pointer to interrupt handler. -#if (defined __GNUC__) -typedef void (*__int_handler)(void); -#elif (defined __ICCAVR32__) -typedef void (__interrupt *__int_handler)(void); -#endif - - -/*! \brief Initializes the hardware interrupt controller driver. - * - * \note Taken and adapted from Newlib. - */ -extern void INTC_init_interrupts(void); - -/*! \brief Registers an interrupt handler. - * - * \param handler Interrupt handler to register. - * \param irq IRQ of the interrupt handler to register. - * \param int_level Interrupt priority level to assign to the group of this IRQ. - * - * \warning The interrupt handler must manage the `rete' instruction, what can - * be done thanks to pure assembly, inline assembly or the - * `__attribute__((__interrupt__))' C function attribute. - * - * \warning If several interrupt handlers of a same group are registered with - * different priority levels, only the latest priority level set will - * be effective. - * - * \note Taken and adapted from Newlib. - */ -extern void INTC_register_interrupt(__int_handler handler, unsigned int irq, unsigned int int_level); - -#endif // __AVR32_ABI_COMPILER__ - - -#endif // _INTC_H_ |