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Diffstat (limited to 'src/dev/arm/base_gic.hh')
-rw-r--r-- | src/dev/arm/base_gic.hh | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/src/dev/arm/base_gic.hh b/src/dev/arm/base_gic.hh new file mode 100644 index 000000000..d177487ed --- /dev/null +++ b/src/dev/arm/base_gic.hh @@ -0,0 +1,94 @@ +/* + * Copyright (c) 2012 ARM Limited + * All rights reserved + * + * The license below extends only to copyright in the software and shall + * not be construed as granting a license to any other intellectual + * property including but not limited to intellectual property relating + * to a hardware implementation of the functionality of the software + * licensed hereunder. You may use the software subject to the license + * terms below provided that you ensure that this notice is replicated + * unmodified and in its entirety in all distributions of the software, + * modified or unmodified, in source code or in binary form. + * + * 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 copyright holders 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 + * OWNER 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. + * + * Authors: Andreas Sandberg + */ + +/** @file + * Base class for ARM GIC implementations + */ + +#ifndef __DEV_ARM_BASE_GIC_H__ +#define __DEV_ARM_BASE_GIC_H__ + +#include "dev/io_device.hh" + +class Platform; + +class BaseGic : public PioDevice +{ + public: + typedef struct BaseGicParams Params; + + BaseGic(const Params *p); + virtual ~BaseGic(); + + const Params * params() const; + + /** + * Post an interrupt from a device that is connected to the GIC. + * + * Depending on the configuration, the GIC will pass this interrupt + * on through to a CPU. + * + * @param num number of interrupt to send + */ + virtual void sendInt(uint32_t num) = 0; + + /** + * Interface call for private peripheral interrupts. + * + * @param num number of interrupt to send + * @param cpu CPU to forward interrupt to + */ + virtual void sendPPInt(uint32_t num, uint32_t cpu) = 0; + + /** + * Clear an interrupt from a device that is connected to the GIC. + * + * Depending on the configuration, the GIC may de-assert it's CPU + * line. + * + * @param num number of interrupt to send + */ + virtual void clearInt(uint32_t num) = 0; + + protected: + /** Platform this GIC belongs to. */ + Platform *platform; +}; + +#endif |