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/*
* Copyright (c) 2014-2016 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
*/
#ifndef __DEV_ARM_NOMALI_GPU_HH__
#define __DEV_ARM_NOMALI_GPU_HH__
#include <map>
#include "dev/io_device.hh"
#include "libnomali/nomali.h"
class NoMaliGpuParams;
class RealView;
class NoMaliGpu : public PioDevice
{
public:
NoMaliGpu(const NoMaliGpuParams *p);
virtual ~NoMaliGpu();
public: /* Checkpointing */
void serialize(CheckpointOut &cp) const override;
void unserialize(CheckpointIn &cp) override;
public: /* IO device interfaces */
Tick read(PacketPtr pkt) override;
Tick write(PacketPtr pkt) override;
AddrRangeList getAddrRanges() const override;
protected: /* API wrappers/helpers */
/**
* @{
* @name API wrappers
*/
/** Wrapper around nomali_reset(). */
void reset();
/** Wrapper around nomali_reg_read(). */
uint32_t readReg(nomali_addr_t reg);
/** Wrapper around nomali_reg_write(). */
void writeReg(nomali_addr_t reg, uint32_t value);
/** Wrapper around nomali_reg_read_raw(). */
uint32_t readRegRaw(nomali_addr_t reg) const;
/** Wrapper around nomali_reg_write_raw(). */
void writeRegRaw(nomali_addr_t reg, uint32_t value);
/**
* Wrapper around nomali_int_state()
*
* @param intno Interrupt number
* @return True if asserted, false otherwise.
*/
bool intState(nomali_int_t intno);
/** @} */
/**
* Format a NoMali error into an error message and panic.
*
* @param err Error code from the NoMali library.
* @param msg Message to print.
*/
static void gpuPanic(nomali_error_t err, const char *msg) M5_ATTR_NORETURN;
/**
* Panic if the NoMali returned an error, do nothing otherwise.
*
* @param err Error code from the NoMali library.
* @param msg Message to print when panicking.
*/
static void panicOnErr(nomali_error_t err, const char *msg) {
if (err != NOMALI_E_OK)
gpuPanic(err, msg);
}
protected: /* Callbacks */
/**
* @{
* @name Callbacks
*/
/**
* Interrupt callback from the NoMali library
*
* This method is called whenever there is an interrupt state change.
*
* @param intno Interrupt number
* @param set True is the interrupt is being asserted, false otherwise.
*/
virtual void onInterrupt(nomali_int_t intno, bool set);
/** @} */
private: /* Callback helpers */
/** Wrapper around nomali_set_callback() */
void setCallback(const nomali_callback_t &callback);
/**
* Interrupt callback from the NoMali library.
*
* This method calls onInterrupt() on the NoMaliGpu owning this
* device.
*
* @param h NoMali library handle.
* @param usr Pointer to an instance of the NoMaliGpu
* @param intno GPU interrupt type
* @param set Was the interrupt raised (1) or lowered (0)?
*/
static void _interrupt(nomali_handle_t h, void *usr,
nomali_int_t intno, int set);
protected:
/** Device base address */
const Addr pioAddr;
/** Platform, used to discover GIC */
RealView *const platform;
/** Map between NoMali interrupt types and actual GIC
* interrupts */
const std::map<nomali_int_t, uint32_t> interruptMap;
/** Cached information struct from the NoMali library */
nomali_info_t nomaliInfo;
/** Handle of a NoMali library instance */
nomali_handle_t nomali;
};
#endif // __DEV_ARM_NOMALI_GPU_HH__
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